Patent Publication Number: US-2023152606-A1

Title: Eyeglasses

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a continuation of U.S. patent application Ser. No. 17/138,909, filed on Dec. 31, 2020, which is a continuation of International Application No. PCT/CN2019/102407 filed on Aug. 24, 2019, which claims priority of Chinese Patent Application No. 201810975515.1 filed on Aug. 24, 2018, Chinese Patent Application No. 201910009904.3 filed on Jan. 5, 2019, and Chinese Patent Application No. 201920031804.6 filed on Jan. 5, 2019, the contents of each of which are hereby incorporated by reference in its entirety. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to the field of eyeglasses, and more specifically relates to eyeglasses having a speaker. 
     BACKGROUND 
     With the development of speaker technology, electronic products (e.g., earphones, MP3, etc.) have been widely used. Speakers may have different product forms. For example, a speaker may be integrated on eyeglasses (e.g., sunglasses, swimming eyeglasses, etc.) or fixed inside an ear or near the ear of a user through a special structure (e.g., an ear hook). As the functions of the products become more diverse, there may be more and more internal modules and wiring of the speaker, and the wiring may be more and more complicated. The complicated wiring may greatly occupy an internal space of the product, and an unreasonable wiring distribution may cause wires to affect each other, which may cause an abnormal sound and affect the sound quality of the speaker. Therefore, it may be necessary to provide a more efficient wiring technology, so as to simplify a wiring approach of the speaker and improve the sound quality of the speaker. 
     SUMMARY 
     An embodiment of the present specification may provide eyeglasses. The eyeglasses may include an eyeglass rim; an eyeglass temple, the eyeglass temple comprising a control circuit or a battery; a rotating shaft, the rotating shaft being configured to connect the eyeglass rim and the eyeglass temple, so that the eyeglass rim and the eyeglass temple are relatively rotated around the rotating shaft, and the rotating shaft is disposed with a rotating shaft wiring channel along an axial direction; a connection wire, the connection wire passing through the rotating shaft wiring channel and extending to the eyeglass rim and the eyeglass temple, respectively; and a speaker, the speaker comprising an earphone core, the speaker being connected to the eyeglass temple, the control circuit or battery in the eyeglass temple driving the earphone core to vibrate through the connection wire, wherein the earphone core vibrates to generate a driving force to drive a housing panel of the speaker to vibrate, and a straight line of the driving force is not parallel to a normal line of the housing panel. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present disclosure is further described in terms of exemplary embodiments. These exemplary embodiments are described in detail with reference to the drawings. These embodiments are non-limiting exemplary embodiments, in which like reference numerals represent similar structures, and wherein: 
         FIG.  1    is a block diagram illustrating a structure of a speaker according to some embodiments of the present disclosure; 
         FIG.  2    is a schematic diagram illustrating a structure of a flexible circuit board according to some embodiments of the present disclosure; 
         FIG.  3    is an exploded diagram illustrating a partial structure of a speaker according to some embodiments of the present disclosure; 
         FIG.  4    is a partial sectional view illustrating a structure of a speaker according to some embodiments of the present disclosure; 
         FIG.  5    is a partial sectional diagram illustrating a speaker according to some embodiments of the present disclosure; 
         FIG.  6    is a partial enlarged diagram illustrating part F of a speaker in  FIG.  5    according to some embodiments of the present disclosure; 
         FIG.  7    is an exploded view illustrating a speaker according to some embodiments of the present disclosure; 
         FIG.  8    is a schematic diagram illustrating a structure of a nose pad cover in a speaker according to some embodiments of the present disclosure; 
         FIG.  9    is a partial sectional view illustrating an eyeglass rim and a spectacle lens in a speaker according to some embodiments of the present disclosure; 
         FIG.  10    is an enlarged view illustrating part A of a speaker in  FIG.  9    according to some embodiments of the present disclosure; 
         FIG.  11    is a partial structural diagram illustrating a connection wire in a speaker according to some embodiments of the present disclosure; 
         FIG.  12    is a partial structural schematic diagram illustrating part B of a speaker in  FIG.  7    according to some embodiments of the present disclosure; 
         FIG.  13    is an enlarged sectional view illustrating a partial structure of eyeglasses in a speaker according to some embodiments of the present disclosure; 
         FIG.  14    is a schematic structural diagram illustrating a rotating shaft component and a connection wire in a speaker according to some embodiments of the present disclosure; 
         FIG.  15    is a schematic structural diagram illustrating a first rotating shaft in a speaker according to some embodiments of the present disclosure; 
         FIG.  16    is a partial exploded view illustrating a speaker according to some embodiments of the present disclosure; 
         FIG.  17    is a schematic structural diagram illustrating an eyeglass rim and a spectacle lens in a speaker according to some embodiments of the present disclosure; 
         FIG.  18    is a schematic diagram illustrating a partial structure of an eyeglass temple in a speaker according to some embodiments of the present disclosure; 
         FIG.  19    is a structural diagram and an application scenario of a bone conduction speaker according to some embodiments of the present disclosure; 
         FIG.  20    is a schematic diagram illustrating a direction of an included angle according to some embodiments of the present disclosure; 
         FIG.  21    is a structural diagram of a bone conduction speaker acting on human skin and bones according to the present disclosure; 
         FIG.  22    is a diagram illustrating an angle-relative displacement relationship of a bone conduction speaker according to some embodiments of the present disclosure; 
         FIG.  23    is a schematic diagram illustrating frequency response curves of a bone conduction speaker in a low-frequency part correspond to different angles  8  according to some embodiments in the present disclosure; and. 
         FIG.  24    is a schematic diagram of transmitting a sound through air conduction according to some embodiments of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     In the following detailed description, numerous specific details are set forth by way of examples in order to provide a thorough understanding of the relevant disclosure. Obviously, drawings described below are only some examples or embodiments of the present disclosure. Those skilled in the art, without further creative efforts, may apply the present disclosure to other similar scenarios according to these drawings. It should be understood that the purposes of these illustrated embodiments are only provided to those skilled in the art to practice the application, and not intended to limit the scope of the present disclosure. Unless obviously obtained from the context or the context illustrates otherwise, the same numeral in the drawings refers to the same structure or operation. 
     As used in the disclosure and the appended claims, the singular forms “a,” “an,” and “the” may include plural referents unless the content clearly dictates otherwise. In general, the terms “comprise” and “include” merely prompt to include steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive listing. The methods or devices may also include other steps or elements. The term “based on” is “based at least in part on.” The term “one embodiment” means “at least one embodiment;” the term “another embodiment” means “at least one other embodiment.” Related definitions of other terms will be given in the description below. In the following, without loss of generality, the “eyeglasses” or “sunglasses” may be used when illustrating related technologies of conduction in the present disclosure. The illustration is only a form of conductive application. For those skilled in the art, “eyeglasses” or “sunglasses” may also be replaced with other similar words, such as “eye protection device,” “eye wearable device,” or the like. In fact, various implementations in the present disclosure may be easily applied to other hearing devices belonging to non-speaker component. For example, for those skilled in the art, after understanding the basic principles of eyeglasses, it may be possible to make various modifications and changes in the form and details of the specific methods and operations of implementing eyeglasses without departing from the principles. In particular, an environmental sound collection and processing function may be added to the eyeglasses to enable the eyeglasses to implement the function of a hearing aid. For example, a microphone may collect environmental sounds of a user/wearer, process the sounds using a certain algorithm and transmit the processed sound (or generated electrical signal) to a speaker. That is, the eyeglasses may be modified to include the function of collecting the environmental sounds, and after a certain signal processing, the sound may be transmitted to the user/wearer via the speaker, thereby implementing the function of the hearing aid. As an example, the algorithm mentioned herein may include noise cancellation, automatic gain control, acoustic feedback suppression, wide dynamic range compression, active environment recognition, active noise reduction, directional processing, tinnitus processing, multi-channel wide dynamic range compression, active howling suppression, volume control, or the like, or any combination thereof. 
       FIG.  1    is a block diagram illustrating a structure of a speaker according to some embodiments of the present disclosure. 
     A speaker  100  may include at least an earphone core  102 , an auxiliary function module  104 , and a flexible circuit board  106 . 
     In some embodiments, the earphone core  102  may receive electrical audio signal(s) and convert the audio signal(s) into the sound signal(s). The flexible circuit board  106  may facilitate electrical connection(s) between different modules/components. For example, the flexible circuit board  106  may facilitate an electrical connection between the earphone core  102  and an external control circuit and an electrical connection between the earphone core  102  and the auxiliary function module  104 . 
     In some embodiments, the earphone core  102  may include at least a magnetic circuit component, a vibration component, and a bracket that accommodates the magnetic circuit component and the vibration component. The magnetic circuit component may be used to provide a magnetic field. The vibration component may be used to convert an electrical signal input to the vibration component into a mechanical vibration signal so as to generate a sound. In some embodiments, the vibration component may include at least a coil and an inner lead. In some embodiments, the earphone core  102  may also include an external wire. The external wire may be capable of transmitting an audio current to the coil in the vibration component. One end of the external wire may be connected to the inner lead of the earphone core, and the other end may be connected to the flexible circuit board of the speaker. In some embodiments, the bracket may have a wiring groove. The external wire and/or the inner lead may be partially disposed of the wiring groove described in detail in other parts of the present disclosure. 
     In some embodiments, the auxiliary function module  104  may be used to receive auxiliary signal(s) and perform auxiliary function(s). The auxiliary function module  104  may be a module different from the earphone core and may be used for receiving the auxiliary signal(s) and performing the auxiliary function(s). In the present disclosure, the conversion of the audio signal into the sound signal may be considered as a main function of the speaker  100 , and other functions different from the main function may be considered as the auxiliary function(s) of the speaker  100 . For example, the auxiliary function(s) of the speaker  100  may include receiving a user sound and/or an ambient sound through a microphone, controlling a broadcasting process of the sound signal through a key, or the like, and a corresponding auxiliary function module may include a microphone, a key switch, etc., which may be set according to actual needs. The auxiliary signal(s) may be electric signal(s) related to the auxiliary function(s), optical signal(s) related to the auxiliary function(s), acoustic signal(s) related to the auxiliary function(s), vibration signal(s) related to the auxiliary function(s), or the like, or any combination thereof. 
     The speaker  100  may further include a core housing  108  for accommodating the earphone core  102 , the auxiliary function module  104 , and the flexible circuit board  106 . When the speaker  100  is a bone conduction earphone, an inner wall of the core housing  108  may be directly or indirectly connected to the vibration component in the earphone core. When the user wears the bone conduction earphone, an outer wall of the core housing  108  may be in contact with the user and transmit the mechanical vibration of the vibration component to an auditory nerve through a bone, so that the human body may hear the sound. In some embodiments, the speaker may include the earphone core  102 , the auxiliary function module  104 , the flexible circuit board  106 , and the core housing  108 . 
     In some embodiments, the flexible circuit board  106  may be a flexible printed circuit board (FPC) accommodated in the inner space of the core housing  108 . The flexible circuit board  106  may have high flexibility and be adapted to the inner space of the core housing  108 . Specifically, in some embodiments, the flexible circuit board  106  may include a first board and a second board. The flexible circuit board  106  may be bent at the first board and the second board so as to adapt to a position of the flexible circuit board in the core housing  108 , or the like. More details may refer to descriptions in other parts of the present disclosure. 
     In some embodiments, the speaker  100  may transmit the sound through a bone conduction approach. An outer surface of the core housing  108  may have a contact surface. The contact surface may be an outer surface of the speaker  100  in contact with the human body when the user wears the speaker  100 . The speaker  100  may compress the contact surface against a preset area (e.g., a front end of a tragus, a position of a skull, or a back surface of an auricle), thereby effectively transmitting the vibration signal(s) to the auditory nerve of the user through the bone and improving the sound quality of the speaker  100 . In some embodiments, the contact surface may be abutted on the back surface of the auricle. The mechanical vibration signal(s) may be transmitted from the earphone core to the core housing and transmitted to the back of the auricle through the contact surface of the core housing. The vibration signal(s) may then be transmitted to the auditory nerve by the bone near the back of the auricle. In this case, the bone near the back of the auricle may be closer to the auditory nerve, which may have a better conduction effect and improve the efficiency of transmitting the sound to the auditory nerve by the speaker  100 . 
     In some embodiments, the speaker  100  may further include a fixing mechanism  110 . The fixing mechanism  110  may be externally connected to the core housing  108  and used to support and maintain the position of the core housing  108 . In some embodiments, a battery assembly and a control circuit may be disposed in the fixing mechanism  110 . The battery assembly may provide electric energy to any electronic component in the speaker  100 . The control circuit may control any function component in the speaker  100 . The function component may include, but be not limited to, the earphone core, the auxiliary function module, or the like. The control circuit may be connected to the battery and other functional components through the flexible circuit board or the wire. 
     In some embodiments, the fixing mechanism  110  may be an eyeglass rim, a hat, a headgear, other headwear accessories, or the like, or any combination thereof. For example, the fixing mechanism  110  may be an eyeglass rim. A cavity may be formed inside the eyeglass rim. The cavity may accommodate the battery assembly, the flexible circuit board, and the control circuit. In this case, the earphone core  102  may be located at the end of the eyeglass temple, which may be located near the ear and provide the sound signal(s) when the user wears the eyeglasses. 
       FIG.  2    is a schematic diagram illustrating a structure of a flexible circuit board located inside a core housing according to some embodiments of the present disclosure. 
     In some embodiments, the flexible circuit board may be disposed with a number of pads. Different signal wires (e.g., audio signal wires, auxiliary signal wires) may be electrically connected to different pads through different flexible leads to avoid numerous and complicated internal wires issues, which may occur when both audio signal wires and auxiliary signal wires need to be connected to the earphone core or the auxiliary function module.  FIG.  3    is an exploded diagram illustrating a partial structure of a speaker according to some embodiments of the present disclosure. As shown in  FIGS.  2  and  3   , a flexible circuit board  44  may at least include a number of first pads  45  and a number of second pads (not shown in the figures). In some embodiments, the flexible circuit board  44  in  FIG.  2    may correspond to the flexible circuit board  106  in  FIG.  1   . At least one of the first pads  45  may be electrically connected to auxiliary function module(s). The at least one of the first pads  45  may be electrically connected to at least one of the second pads through a first flexible lead  47  on the flexible circuit board  44 . The at least one of the second pads may be electrically connected to an earphone core (not shown in the figures) through external wire(s) (not shown in the figures). At least another one of the first pads  45  may be electrically connected to auxiliary signal wire(s). The at least another one of first pads  45  and the auxiliary function module(s) may be electrically connected through a second flexible lead  49  on the flexible circuit board  44 . In the embodiment, the at least one of the first pads  45  may be electrically connected to the auxiliary function module(s). The at least one of the second pads may be electrically connected to the earphone core through the external wire(s). The one of the at least one of the first pads  45  may be electrically connected to one of the at least one of the second pads through the first flexible lead  47 , so that the external audio signal wire(s) and the auxiliary signal wire(s) may be electrically connected to the earphone core and the auxiliary function modules at the same time through the flexible circuit board, which may simplify a layout of the wiring. 
     In some embodiments, the audio signal wire(s) may be wire(s) electrically connected to the earphone core and transmitting audio signal(s) to the earphone core. The auxiliary signal wire(s) may be wire(s) electrically connected to the auxiliary function modules and performing signal transmission with the auxiliary function modules. 
     In some embodiments, referring to  FIG.  2   , specifically, the flexible circuit board  44  may be disposed with the number of pads  45  and two pads (not shown in the figure). The two pads and the number of pads  45  may be located on the same side of the flexible circuit board  44  and spaced apart. The two pads may be connected to two corresponding pads  45  of the number of pads  45  through the flexible lead(s)  47  on the flexible circuit board  44 . Further, a core housing  41  may also accommodate two external wires. One end of each of the external wires may be welded to the corresponding pad, and the other end may be connected to the earphone core, so that the earphone core may be connected to the pads through the external wires. The auxiliary function modules may be mounted on the flexible circuit board  44  and connected to other pads of the number of pads  45  through the flexible lead(s)  49  on the flexible circuit board  44 . 
     In some embodiments, wires may be disposed in the fixing mechanism  110  of the speaker  100 . The wires may at least include the audio signal wire(s) and the auxiliary signal wire(s). In some embodiments, there may be multiple wires in the fixing mechanism  110 . Such wires may include at least two audio signal wires and at least two auxiliary signal wires. For example, the fixing mechanism  110  may be an eyeglass rim. The eyeglass rim may be connected to the core housing  41 , and the wires may be wires disposed in the eyeglass rim. One end of each of multiple wires in the eyeglass rims may be welded to the flexible circuit board  44  arranged in the core housing  10 , or a control circuit board, and the other end of the wire may enter the core housing  41  and be welded to the pad  45  on the flexible circuit board  44 . 
     As used herein, one end of each of the two audio signal wires of the multiple wires in the eyeglass rims, which may be located in the core housing  41 , may be welded to the two pads  45  by two flexible leads  47 , and the other end may be directly or indirectly connected to the control circuit board. The two pads  45  may be further connected to the earphone core through the welding of the flexible lead(s)  49  and the two pad  46  and the welding of the two external wires and the pads, thereby transmitting the audio signal(s) to the earphone core. 
     One end of each of at least two auxiliary signal wires in the core housing  41  may be welded to the pad  45  by the flexible lead(s)  49 , and the other end may be directly or indirectly connected to the control circuit board so as to pass the auxiliary signal(s) received and transformed by the auxiliary function module(s) to the control circuit (not shown in the figure). 
     In the approach described above, the flexible circuit board  44  may be disposed in the core housing  41 , and the corresponding pads may be further disposed on the flexible circuit board  44 . Therefore, the wires (not shown in the figure) may enter the core housing  41  and be welded to the corresponding pads, and further connected to the corresponding auxiliary function module(s) through the flexible leads  47  and the flexible leads  49  on the pads, thereby avoiding a number of wires directly connected to the auxiliary function module(s) to make the wiring in the core housing  41  complicated. Therefore, the arrangement of the wirings may be optimized, and the space occupied by the core housing  41  may be saved. In addition, when a number of the rim wires are directly connected to the auxiliary function module(s), a middle portion of the rim wires may be suspended in the core housing  41  to easily cause vibration, thereby resulting in abnormal sounds to affect the sound quality of the earphone core. According to the approach, the wires in the eyeglass rim may be welded to the flexible circuit board  44  and further connected to the corresponding auxiliary function module(s), which may reduce a situation that the wires are suspended from effecting the quality of the earphone core, thereby improving the sound quality of the earphone core to a certain extent. 
     In some embodiments, the flexible circuit board (also referred to as the flexible circuit board  44 ) may be further divided. The flexible circuit board may be divided into at least two regions. One auxiliary function module may be disposed on one of the at least two regions, so that at least two auxiliary function modules may be disposed on the flexible circuit board. Wiring between the audio signal wire(s) and the auxiliary signal wire(s) and the at least two auxiliary function modules may be implemented through the flexible circuit board. In some embodiments, the flexible circuit board may include at least a main circuit board and a first branch circuit board. The first branch circuit board may be connected to the main circuit board and extend away from the main circuit board along one end of the main circuit board. The auxiliary function module(s) may include at least a first auxiliary function module and a second auxiliary function module. The first auxiliary function module may be disposed on the main circuit board, and the second auxiliary function module may be disposed on the first branch circuit board. The number of first pads may be disposed on the main circuit board, and the second pads may be disposed on the first branch circuit board. In some embodiments, the first auxiliary function module may be a key switch. The key switch may be disposed on the main circuit board, and the first pads may be disposed corresponding to the key switch. The second auxiliary function module may be a microphone. The microphone may be disposed on the first branch circuit board, and the second pads corresponding to the microphone may be disposed on the first branch circuit board. The first pads corresponding to the key switch on the main circuit board may be connected to the second pads corresponding to the microphone on the first branch circuit board through the second flexible lead(s). The key switch may be electrically connected to the microphone, so that the key switch may control or operate the microphone. 
     In some embodiments, the flexible circuit board may further include a second branch circuit board. The second branch circuit board may be connected to the main circuit board. The second branch circuit board may extend away from the main circuit board along the other end of the main circuit board and be spaced from the first branch circuit board. The auxiliary function module(s) may further include a third auxiliary function module. The third auxiliary function module may be disposed on the second branch circuit board. The number of first pads may be disposed on the main circuit board. At least one of the second pads may be disposed on the first branch circuit board, and the other second pads may be disposed on the second branch circuit. In some embodiments, the third auxiliary function module may be a second microphone. The second branch circuit board may extend perpendicular to the main circuit board. The second microphone may be mounted on the end of the second branch circuit board away from the main circuit board. The number of pads may be disposed at the end of the main circuit board away from the second branch circuit board. 
     Specifically, as shown in  FIG.  2    and  FIG.  3   , the second auxiliary function module may be the first microphone  432   a . The third auxiliary function module may be the second microphone  432   b . As used herein, the first microphone  432   a  and the second microphone  432   b  may both be MEMS (micro-electromechanical system) microphone  432 , which may have a small working current, relatively stable performance, and high voice quality. The two microphones  432  may be disposed at different positions of the flexible circuit board  44  according to actual needs. 
     As used herein, the flexible circuit board  44  may include a main circuit board  441  (or referred to the main circuit board), and a branch circuit board  442  (or referred to the first branch circuit board) and a branch circuit board  443  (or referred to the second branch circuit board) connected to the main circuit board  441 . The branch circuit board  442  may extend in the same direction as the main circuit board  441 . The first microphone  432   a  may be mounted on one end of the branch circuit board  442  away from the main circuit board  441 . The branch circuit board  443  may extend perpendicular to the main circuit board  441 . The second microphone  432   b  may be mounted on one end of the branch circuit board  443  away from the main circuit board  441 . A number of pads  45  may be disposed on the end of the main circuit board  441  away from the branch circuit board  442  and the branch circuit board  443 . 
     In one embodiment, the core housing  41  may include a peripheral side wall  411  and a bottom end wall  412  connected to one end surface of the peripheral side wall  411 , so as to form an accommodation space with an open end. As used herein, an earphone core may be disposed in the accommodation space through the open end. The first microphone  432   a  may be fixed on the bottom end wall  412 . The second microphone  432   b  may be fixed on the peripheral side wall  411 . 
     In the embodiment, the branch circuit board  442  and/or the branch circuit board  443  may be appropriately bent to suit a position of a sound inlet corresponding to the microphone  432  on the core housing  41 . Specifically, the flexible circuit board  44  may be disposed in the core housing  41  in a manner that the main circuit board  441  is parallel to the bottom end wall  412 . Therefore, the first microphone  432   a  may correspond to the bottom end wall  412  without bending the main circuit board  441 . Since the second microphone  432   b  may be fixed on the peripheral side wall  411  of the core housing  41 , it may be necessary to bend the second main circuit board  441 . Specifically, the branch circuit board  443  may be bent at one end away from the main circuit board  441  so that a board surface of the branch circuit board  443  may be perpendicular to a board surface of the main circuit board  441  and the branch circuit board  442 . Further, the second microphone  432   b  may be fixed at the peripheral side wall  411  of the core housing  41  in a direction facing away from the main circuit board  441  and the branch circuit board  442 . 
     In one embodiment, the first pads  45 , the second pads, the first microphone  432   a , and the second microphone  432   b  may be disposed on the same side of the flexible circuit board  44 . The second pads may be disposed adjacent to the second microphone  432   b.    
     As used herein, the second pads may be specifically disposed at one end of the branch circuit board  443  away from the main circuit board  441  and have the same direction as the second microphone  432   b  and disposed at intervals. Therefore, the second pads may be perpendicular to the direction of the first pads  45  as the branch circuit board  443  is bent. It should be noted that the branch circuit board  443  may not be perpendicular to the board surface of the main circuit board  441  after being bent, which may be determined according to the arrangement between the side wall  411  and the bottom end wall  412 . 
     Further, another side of the flexible circuit board  44  may be disposed with a rigid support plate  4   a  and a microphone rigid support plate  4   b  for supporting the first pads  45 . The microphone rigid support plate  4   b  may include a rigid support plate  4   b   1  for supporting the first microphone  432   a  and a rigid support plate  4   b   2  for supporting the second pads and the second microphone  432   b  together. 
     As used herein, the rigid support plate  4   a , the rigid support plate  4   b   1 , and the rigid support plate  4   b   2  may be mainly used to support the corresponding pads and the microphone  432 , and thus may need to have certain strengths. The materials of the three may be the same or different. The specific material may be polyimide (PI), or other materials that may provide the strengths, such as polycarbonate, polyvinyl chloride, etc. In addition, the thicknesses of the three rigid support plates may be set according to the strengths of the rigid support plates, and actual strengths required by the first pads  45 , the second pads, the first microphone  432   a , and the second microphone  432   b , and be not specifically limited herein. 
     As used herein, the rigid support plate  4   a , the rigid support plate  4   b   1 , and the rigid support plate  4   b   2  may be three different regions of an entire rigid support plate, or three independent bodies spaced apart from each other, and be not specifically limited herein. 
     In one embodiment, the first microphone  432   a  and the second microphone  432   b  may correspond to two microphone components  4   c , respectively (not shown in the figure). In one embodiment, the structures of the two microphone components may be the same. A sound inlet  413  may be disposed on the core housing  41 . Further, the loud speaking device may be further disposed with an annular blocking wall  414  integrally formed on the inner surface of the core housing  41  at the core housing  41 , and disposed at the periphery of the sound inlet  413 , thereby defining an accommodation space (not shown in the figure) connected to the sound inlet  413 . 
     In one embodiment, the flexible circuit board  44  may be disposed between a rigid support plate (e.g., the rigid support plate  4   a , the rigid support plate  4   b   1 , and the rigid support plate  4   b   2 ) and the microphone  432 . A sound input  444  may be disposed at a position corresponding to a sound input  4   b   3  of the microphone rigid support plate  4   b.    
     Further, the flexible circuit board  44  may further extend away from the microphone  432 , so as to be connected to other functional components or wires to implement corresponding functions. Correspondingly, the microphone rigid support plate  4   b  may also extend out a distance with the flexible circuit board in a direction away from the microphone  432 . 
     Correspondingly, the annular blocking wall  414  may be disposed with a gap matching the shape of the flexible circuit board to allow the flexible circuit board to extend out of the accommodation space  415 . In addition, the gap may be further filled with a sealant to further improve the sealing. 
       FIG.  4    is a partial sectional view illustrating a structure of a speaker according to some embodiments of the present disclosure. In some embodiments, as shown in  FIG.  4   , the flexible circuit board  44  may include a main circuit board  445  and a branch circuit board  446 . The branch circuit board  446  may extend along an extending direction perpendicular to the main circuit board  445 . As used herein, the number of first pads  45  may be disposed at the end of the main circuit board  445  away from the branch circuit board  446 . A key switch may be mounted on the main circuit board  445 . The second pads  46  may be disposed at the end of the branch circuit boards  446  away from the main circuit board  445 . The first auxiliary function module may be a key switch  431 . The second auxiliary function module may be a microphone  432 . 
     In the embodiment, a board surface of the flexible circuit board  44  and the bottom end wall  412  may be disposed in parallel and at intervals, so that the key switch may be disposed towards the bottom end wall  412  of the core housing  41 . 
     As described above, an earphone core (or the earphone core  102 ) may include a magnetic circuit component, a vibration component, an external wire, and a bracket. As used herein, the vibration component may include a coil and an inner lead. The external wire may transmit an audio current to the coil in the vibration component. One end of the external wire may be connected to the inner lead of the earphone core, and the other end may be connected to the flexible circuit board of a speaker. The bracket may have a wiring groove. At least a portion of the external wire and/or the inner lead may be disposed in the wiring groove. In some embodiments, the inner lead and the outer wire may be welded to each other. A welding position may be located in the wiring groove. 
       FIG.  5    is a partial sectional diagram illustrating a speaker according to some embodiments of the present disclosure.  FIG.  6    is a partial enlarged diagram illustrating part F of a speaker in  FIG.  5    according to some embodiments of the present disclosure. Specifically, referring to  FIG.  5    and  FIG.  6   , an earphone core may include a bracket  421 , a coil  422 , and an external wire  48 . The bracket  421  may be used to support and protect the entire structure of the earphone core. In the embodiment, the bracket  421  may be disposed with a wiring groove  4211  used to accommodate a circuit of the earphone core. 
     The coil  422  may be disposed on the bracket  421  and have at least one inner lead  423 . One end of the inner lead(s)  423  may be connected to a main circuit in the coil  422  to lead out the main circuit and transmit an audio current to the coil  422  through the inner lead  423 . 
     One end of the external wire  48  may be connected to the inner lead(s)  423 . Further, the other end of the external wire  48  may be connected to a control circuit (not shown in the figure) to transmit the audio current through the control circuit to the coil  422  through the inner lead  423 . 
     Specifically, during an assembly stage, the external wire  48  and the inner lead(s)  423  may need to be connected together by means of welding, or the like. Due to structural and other factors, after the welding is completed, a length of the wire may not be exactly the same as a length of a channel, and there may be an excess length part of the wire. And if the excess length part of the wire is not disposed reasonably, it may vibrate with the vibration of the coil  422 , thereby making an abnormal sound and affecting the sound quality of the earphone core. 
     Further, at least one of the external wire  48  and the inner lead  423  may be wound and disposed in the wiring groove  4211 . In an application scenario, the welding position between the inner lead  423  and the external wire  48  may be disposed in the wiring groove  4211 , so that a portion of the external wire  48  and the inner lead  423  located near the welding position may be wound in the wiring groove  4211 . In addition, in order to maintain stability, the wiring groove  4211  may be further filled with a sealant to further fix the wiring in the wiring groove  4211 . 
     In the manner described above, the wiring groove  4211  may be disposed on the bracket  421 , so that at least one of the external wire  48  and the inner lead  423  may be wound into the wiring groove  4211  to accommodate the excess length part of the wire, thereby reducing the vibration generated inside the channel, and reducing the influence of the abnormal sound caused by the vibration on the sound quality of the earphone core. 
     In one embodiment, the bracket  421  may include an annular main body  4212 , a support flange  4213 , and an outer blocking wall  4214 . As used herein, the annular main body  4212 , the support flange  4213 , and the outer blocking wall  4214  may be integrally formed. 
     As used herein, the annular main body  4212  may be disposed inside the entire bracket  421  and used to support the coil  422 . Specifically, a cross-section of the annular main body  4212  in a direction perpendicular to the radial direction of a ring of the annular main body  4212  may be consistent with the coil  422 . The coil  422  may be disposed at an end of the annular main body  4212  facing the core housing. The inner side wall and the outer side wall of the annular main body  4212  may be flush with the inner side wall and the outer side wall of the coil  422 , respectively, so that the inner side wall of the coil  422  and the inner side wall of the annular main body  4212  may be coplanar, and the outer side wall of the coil  422  and the outer side wall of the annular main body  4212  may be coplanar. 
     Further, the support flange  4213  may protrude on the outer side wall of the annular main body  4212  and extend along the outside of the annular main body  4212 . Specifically, the support flange  4213  may extend outward in a direction perpendicular to the outer side wall of the annular main body  4212 . As used herein, the support flange  4213  may be disposed at a position between two ends of the annular main body  4212 . In the embodiment, the support flange  4213  may protrude around the outer side wall of the annular main body  4212  to form an annular support flange  4213 . In other embodiments, the support flange  4213  may also be formed by protruding at a portion of the outer side wall of the annular main body  4212  according to needs. 
     The outer blocking wall  4214  may be connected to the support flange  4213  and spaced apart from the annular main body  4212  along the side of the annular main body  4212 . As used herein, the outer blocking wall  4214  may be sleeved on the periphery of the annular main body  4212  and/or the coil  422  at intervals. Specifically, the outer blocking wall  4214  may be partially sleeved around the periphery of the annular main body  4212  and the coil  422  according to actual needs, or partially sleeved around the periphery of the annular main body  4212 . It should be noted that, in the embodiment, a portion of the outer blocking wall  4214  close to the wiring groove  4211  may be sleeved on a portion of the periphery of the annular main body  4212 . Specifically, the outer blocking wall  4214  may be disposed on a side of the support flange  4213  away from the core housing. As used herein, the outer side wall of the annular main body  4212 , the side wall of the support flange  4213  away from the core housing, and the inner side wall of the outer blocking wall  4214  may together define the wiring groove  4211 . 
     In one embodiment, a wiring channel  424  may be disposed on the annular main body  4212  and the support flange  4213 . The inner lead(s)  423  may extend inside the wiring groove  4211  via the wiring channel  424 . 
     As used herein, the wiring channel  424  may include a sub-wiring channel  4241  on the annular main body  4212  and a sub-wiring channel  4242  on the support flange  4213 . The sub-wiring channel  4241  may be disposed through the inner side wall and the outer side wall of the annular main body  4212 . A wiring port  42411  communicating with one end of the sub-wiring channel  4241  may be disposed on a side of the annular main body  4212  near the coil  422 . A wiring port  42412  communicating with the other end of the sub-wiring channel  4241  may be disposed on a side of the core housing near the support flange  4213  facing the core housing. The sub-wiring channel  4242  may penetrate the support flange  4213  in a direction towards the outside of the core housing. The wiring port  42421  communicating with the end of the sub-wiring channel  4242  may be disposed on a side of the support flange  4213  facing the core housing. The wiring port  42422  communicating with the other end of the sub-wiring channel  4242  may be disposed on a side away from the core housing. As used herein, the wiring port  42412  and the wiring port  42421  may communicate through a space between the support flange  4213  and the annular main body  4212 . 
     Further, the inner lead(s)  423  may enter the wiring port  42411 , extend along the sub-wiring channel  4241 , exit from the wiring port  42412  to enter a region between the annular main body  4212  and the support flange  4213 , further enter the sub-wiring channel  4242  from the wiring port  42421 , and extend into the wiring groove  4211  after passing through the wiring port  42422 . 
     In one embodiment, the top of the outer blocking wall  4214  may be disposed with a slot  42141 . The external wire  48  may extend inside the wiring groove  4211  through the slot  42141 . 
     As used herein, one end of the external wire  48  may be disposed on the flexible circuit board  44 . The flexible circuit board  44  may be specifically disposed on an inner side of the earphone core facing the core housing. 
     In the embodiment, the support flange  4213  may be further extended to a side of the outer blocking wall  4214  away from the annular main body  4212  to form an outer edge. Further, the outer edge may surround and abut on the inner side wall of the core housing. Specifically, the outer edge of the support flange  4213  may be disposed with a slot  42131 , so that the external wire  48  on the inner side of the earphone core facing the core housing may be extended to the outer side of the support flange  4213  facing the core housing through the slot  42131 , and then to the slot  42141 , and enter the wiring groove  4211  through the slot  42141 . 
     Further, the inner side wall of the core housing may be disposed with a guide groove  416 . One end of the guide groove  41  may be located on one side of the flexible circuit board  44  and the other end may communicate with the slot  42131  and extend in a direction towards the outside of the core housing, so that the external wire  48  extends from the flexible circuit board to a second wiring groove  3331  by passing through the guide slot  416 . 
     In one embodiment, the bracket  421  may further include two side blocking walls  4215  spaced along the circumferential direction of the annular main body  4212  and connected to the annular main body  4212 , the supporting flange  4213 , and the outer blocking wall  4214 , thereby defining the wiring groove  4211  between the two side blocking walls  4215 . 
     Specifically, the two side blocking walls  4215  may be oppositely disposed on the support flange  4213  and protrude towards the outer side of the core housing along the support flange  4213 . As used herein, a side of the two side blocking walls  4215  facing the annular main body  4212  may be connected to the outer side wall of the annular main body  4212 . A side away from the annular main body  4212  may terminate at the outer side wall of the outer blocking wall  4214 . The wiring port  42422  and the slot  42141  may be defined between the two side blocking walls  4215 . Therefore, the inner lead(s)  423  exiting from the wiring port  42422  and the outer wire  48  entering through the slot  42141  may extend into the wiring groove  4211  defined by the two side blocking walls  4215 . 
       FIG.  7    is a schematic diagram illustrating a structure of a speaker according to some embodiments of the present disclosure. 
     In some embodiments, the speaker may be eyeglasses. In some embodiments, a fixing mechanism may be an eyeglass frame. The fixing mechanism may have at least one rotating shaft. The rotating shaft(s) may be used to connect an eyeglass rim and an eyeglass temple. The eyeglass rim and the eyeglass temple may rotate around the rotating shaft. The rotating shaft may have a rotating shaft wiring channel disposed along an axis. A connection wire may be disposed in the fixing mechanism. The connection wire may be an electrical connection wire. The connection wire may pass through the rotating shaft wiring channel. Two ends of the connection wire may extend into the eyeglass rim and the eyeglass temple, respectively. In some embodiments, the eyeglass temple at two sides may accommodate a control circuit and a battery component, respectively. The connection wire in the eyeglass rim may be electrically connect to the control circuit and the battery component. The connection wire may include an audio signal wire and an auxiliary signal wire. The connection wire may be electrically connected to a flexible circuit board (i.e., the flexible circuit board  106 ) in a core housing (i.e., the core housing  108 ), and electrically connected to an earphone core (i.e., the earphone core  102 ) and auxiliary function module(s) (i.e., an auxiliary function module  104 ) through the flexible circuit board. 
     In some embodiments, the eyeglasses of the present disclosure may be eyeglasses worn in people&#39;s daily life and at work to correct vision and protect eyes, or certain circuit structures and electronic components may be added into the eyeglasses in order to further implement specific functions through the circuit structures and electronic components. Specifically, the eyeglasses in the present disclosure may be smart eyeglasses, virtual reality eyeglasses, holographic eyeglasses, augmented reality eyeglasses, or eyeglasses with other functional structures (e.g., eyeglasses with a bone conduction earphone or an air conduction earphone). 
     In some embodiments, as shown in  FIG.  7   , the eyeglass frame may include an eyeglass rim  11 , a nose pad  12 , a spectacle lens  13 , and an eyeglass temple  15 . 
     As used herein, the eyeglass rim  11  may be used to carry at least a portion of the spectacle lens  13 . The nose pad  12  may be used to support the eyeglasses on the bridge of the nose of a user when the user wears the eyeglasses. 
     The nose pad  12  may be disposed in the middle of the eyeglass rim  11  and integrally formed with the eyeglass rim  11 . In the prior art, the eyeglass rim  11  and the nose pad  12  may be usually formed, respectively. The middle portion of the eyeglass rim  11  may be disposed with a structure connected to the nose pad  12 . After molding, the nose pad  12  may be installed on the connection structure of the eyeglass rim  11 . In the embodiment, the eyeglass rim  11  and the nose pad  12  may be integrally formed directly. Specifically, a corresponding mold may be used to implement the integral molding, for example, injection molding, or the like. In the embodiment, the eyeglass rim  11  and the nose pad  12  may not need to be further installed after the molding, thereby simplifying a manufacturing process of eyeglasses. 
     In addition, the spectacle lens  13  may also be integrally designed, and be fixed by the eyeglass rim  11  and the nose pad  12  in a clamping manner. 
     Further, the eyeglass rim  11  and the nose pad  12  may be respectively disposed with a structure for clamping the spectacle lens  13 . When the eyeglasses are assembled, the integrally designed spectacle lens  13  may be directly clamped to the integrally formed eyeglass rim  11  and nose pad  12  through the corresponding clamping structures. 
     In the embodiment, the eyeglass rim  11  and the nose pad  12  may be integrally formed, and the spectacle lens  13  may also be integrally designed. Therefore, the entire structure of the eyeglasses may be simple, and the manufacturing process of the eyeglasses may be simplified. 
     Referring to  FIG.  7   ,  FIG.  7    is an exploded view illustrating the eyeglasses according to an embodiment of the present disclosure. In the embodiment, the spectacle lens  13  may include a top-side edge  131  and two outer edges  132  connected to both ends of the top-side edge  131  and disposed away from the nose pad  12 . Each of the outer edges  132  may be respectively disposed with a first buckle  1321 . The eyeglass rim  11  may be disposed with a first mounting groove  111  for receiving the top-side edge  131  and at least a portion of the outer edges  132 , and a first buckle groove  112  for receiving the first buckle  1321  and communicating with the first mounting groove  111 . 
     As used herein, when the eyeglasses are in a wearing state, the top-side edge  131  may be located on the upper side of the spectacle lens  13 , the outer edge may be located on both sides of the spectacle lens  13  near ears of the user, and the top-side edge  131  and the two outer edges  132  may be connected to each other. The first mounting groove  111  may be disposed on a side of the eyeglass rim  11  facing the spectacle lens  13 . A size of the first mounting groove  111  may match the top-side edge  131  and the two outer edges  132  of the corresponding spectacle lens  13 , so that the spectacle lens  13  may be mounted on the eyeglass rim  11  by mounting the top-side edge  131  and at least the portion of the outer edge  132  in the first mounting groove  111 . 
     Further, the first buckle  1321  may be formed by further extending at least a portion of the outer edge  131  of the spectacle lens  13  toward two sides away from the nose pad  12 . The first buckle groove  112  may be formed by recessing a position of the first mounting groove  111  corresponding to the first buckling  1321  in a direction away from the spectacle lens  13 . As used herein, the shape and size of the first buckle groove  112  may match the first buckle  1321 , so that the spectacle lens  13  may be further installed on the eyeglass rim  11  by clamping the first buckle  1321  into the first buckle groove  112 . 
     It should be noted that at least a portion of the outer edge  132  may be located on the side of the first buckle  1321  away from the top-side edge  131 , so that the first buckle  1321  and a portion of the spectacle lens  13  near the two sides of the edge of the spectacle lens  13  may be accommodated inside the first mounting groove  111 . Therefore, the spectacle lens  13  may be more firmly fixed on the eyeglass rim  11 . 
     In one embodiment, the spectacle lens  13  may further include an inner edge  133  abutting on the nose pad  12 . The nose pad  12  may be disposed with a second mounting groove  121  for receiving the inner edge  133 . 
     It should be noted that the spectacle lens  13  may include a left spectacle lens and a right spectacle lens. The inner edge  133  of the spectacle lens  13  may be disposed at a connection between the left spectacle lens and the right spectacle lens and a vicinity of the connection. Accordingly, the second mounting groove  121  and the first mounting groove  111  may be oppositely disposed so that the opposite sides of the spectacle lens  13  may be respectively received and fixed in an accommodation space formed by the eyeglass rim  11  and the nose pad  12 . 
     In one embodiment, two sides of the inner edge  133  may be respectively disposed with a second buckle  1331 . The nose pad  12  may be further disposed with a second buckle groove  122  connected to the second mounting groove  121  and used to receive the second buckle  1331 . 
     As used herein, the inner edge  133  may include two portions connected to each other, which may be respectively disposed on a side of the left eyeglass lens facing the right eyeglass lens and a side of the right eyeglass lens facing the left eyeglass lens. The nose pad  12  may also be divided into two portions, which may be respectively supported on the left and right nose bridges of the user when worn by the user. Accordingly, in the embodiment, the count of the second buckle groove  122  and the second buckle  1331  may also be two. The shape and size of the second buckle  1331  may match the corresponding second buckle groove  122  to install the second buckle  1331  in the corresponding second buckle groove  122 . 
     In addition, the spectacle lens  13  may be disposed with the inner edge  133  near both sides of the second buckle  1331 , which may allow the vicinity of both sides of the second buckle  1331  to be installed in the second mounting groove  121 . Therefore, the spectacle lens  13  may be more firmly fixed on the nose pad  12 . 
     By the approach, the spectacle lens  13  may be respectively mounted on the eyeglass rim  11  and the nose pad  12  through the top-side edge  131 , the outer edge  132 , the inner edge  133 , the first buckle  1321 , and the second buckle  1331 . 
     In an application scenario, the spectacle lens  13  may be further disposed with vent holes  134 . Specifically, the count of the vent holes may be two, and respectively disposed on the left and right sides of the spectacle lenses  13  near the top-side edge  131 . The arrangement of the vent holes  134  may facilitate air circulation of the inner and outer sides of the spectacle lens  13  when the user wears the eyeglasses, thereby reducing a phenomenon of fogging of the spectacle lens  13  caused by local overheating due to reasons such as user movement, etc. 
     Specifically, referring to  FIG.  7    and  FIG.  8    together,  FIG.  7    is an exploded view illustrating a speaker according to some embodiments of the present disclosure, and  FIG.  8    is a schematic diagram illustrating a structure of a nose pad cover of eyeglasses according to some embodiments of the present disclosure. In one embodiment, the nose pad  12  may include a connection portion  123  connected to the eyeglass rim  11  on the side of the first mounting groove  111  near the user or away from the user in the wearing state, and two support portions  124  connected to the connection portion  123  in an inverted Y-shaped manner on a side of the connection portion  123  away from the eyeglass rim  11 . The support portions  124  may be used to support the eyeglasses on the nose of the user when wearing. 
     In an application scenario, the connecting portion  123  may be integrally connected to the eyeglass rim  11 . When the user wears the eyeglasses, the connecting portion  123  may be disposed on a side of the first mounting groove  111  close to the user. 
     A side of each of the support portions  124  protruding toward the nose bridge of the user may be disposed with I-shaped hook(s)  1241 . The eyeglasses may further include nose pad cover(s)  14  detachably sleeved on the hook(s)  1241 . 
     As used herein, the nose pad cover  14  may be made of soft rubber. Specifically, the count of the I-shaped hook(s)  1241  may be two, corresponding to the left and right nose bridges of the user, respectively. The nose pad cover  14  may include two cover bodies  141  and a connecting portion  142  connecting to the two cover bodies  141 . As used herein, the connecting portion  142  may be connected with the nose bridge of the user. The cover bodies  141  may be correspondingly disposed with I-shaped accommodation groove(s)  1411  matching the hook(s)  1241 . Sides of the cover bodies  141  facing the nose bridge of the user may further be disposed with an anti-slippery portion  1412  including a number of grooves. In the embodiment, the nose pad cover  14  may be detachably disposed, thereby facilitating cleaning and replacement of the nose pad cover  14 . 
     Further, in an embodiment, sides of the two support portions  124  back from the hook(s)  1241  may be protruded with strip shaped ribs  1242 . The strip shaped ribs  1242  may cooperate with the two support portions  124  to form the second mounting groove  121  and the second buckle groove  122 . 
     As used herein, the strip shaped ribs  1242  may be protruded along edges of the two support portions  124  away from the spectacle lens  13 , thereby forming the second mounting groove  121  for receiving the inner edge  133  of the spectacle lens  13 . At a position corresponding to the second buckle  1331  of the spectacle lens  13 , the strip shaped ribs  1242  may be further recessed to form the second buckle groove  122 . 
     Referring to  FIG.  7    together, in one embodiment, the eyeglass rim may further include the eyeglass temple  15 , function component(s)  16 , and a connection wire  17 . As used herein, the eyeglass temple  15  may include a first eyeglass temple  151  and a second eyeglass temple  152 . The function component(s)  16  may include a first function component  161  and a second function component  162 . 
     Specifically, the first eyeglass temple  151  and the second eyeglass temple  152  may be respectively connected to the eyeglass rim  11 . The first function component  161  and the second function component  162  may be respectively disposed on the first eyeglass temple  151  and the second eyeglass temple  152 . At least one cavity may be disposed on the two eyeglass temples  15  to accommodate the corresponding function components  16 . 
     The connection wire  17  may be disposed inside the first mounting groove  111  and between the bottom of the first mounting groove  111  and the top-side edge  131  of the spectacle lens  13 , and further extend to the first eyeglass temple  151  and the second eyeglass temple  152  to be electrically connected to the first function component  161  and the second function component  162 . 
     In the embodiment, the function component(s)  16  respectively disposed in the two eyeglass temples  15  may need to be electrically connected through the connection wire  17  so that the eyeglasses may implement a specific function. Specifically, in an application scenario, the first function component  161  may be a battery component, and the second function component  162  may be a control circuit component. The control circuit component may be connected to the battery component through the connection wire  17 , so that the battery component may provide power to the control circuit component. Therefore, the control circuit component may implement the specific function. 
     In order to meet requirements of beauty and lightness of the eyeglasses, the connection wire  17  may be disposed in the first mounting groove  111  along the top-side edge  131  of the spectacle lens  13  and accommodated inside a space formed by the first mounting groove  111  and the top-side edge  131  of the spectacle lens  13 , so that the connection wire  17  may be neither exposed on the outer surface of the eyeglasses nor occupy extra space. In an application scenario, the connection wire  17  may further extend along the outer edge  132  of the spectacle lens  13  inside the first mounting groove  111 . 
     Specifically, the eyeglass rim  11 , the first eyeglass temple  151 , and the second eyeglass temple  152  may respectively be disposed with a wiring channel communicated with each other, so that the connection wire  17  may enter the first eyeglass temple  151  and the second eyeglass temple  152  from the first mounting groove  111  of the eyeglass rim  11  through the corresponding wiring channels, thereby connecting the first function component  161  and the second function component  162 . 
     In the embodiment, the connection wire  17  may have an electrical connection function. In other embodiments, the connection wire  17  may also have a mechanical connection function. 
     In the embodiment, the first function component  161  and the second function component  162  may be respectively disposed on the first eyeglass temple  151  and the second eyeglass temple  152 . The connection wire  17  electrically connecting the first function component  161  and the second function component  162  may be disposed inside the first mounting groove  111  on the eyeglass rim  11  to receive the top-side edge  131  of the spectacle lens  13 , so that the connection wire  17  may be disposed between the bottom of the first mounting groove  111  and the top-side edge  131  of the spectacle lens, and further extend to the first eyeglass temple  151  and the second eyeglass temple  152 . Therefore, the connection wire  17  may not be exposed, and extra space may not need for the arrangement of the connection wire  17 , so that the beauty and lightness of the eyeglasses may be maintained. 
     Referring to  FIG.  9   ,  FIG.  10   , and  FIG.  11    together,  FIG.  9    is a partial sectional view illustrating an eyeglass rim and a spectacle lens according to an embodiment of the present disclosure,  FIG.  10    is an enlarged view illustrating part A in  FIG.  9   , and  FIG.  11    is a partial structural diagram illustrating a connection wire according to an embodiment of the present disclosure. In the embodiment, the connection wire  17  may include a wire body  171  and a wire protection cover  172  wrapped around the periphery of the wire body  171 . A sectional shape of the wire protection cover  172  may match a sectional shape of the first mounting groove  111 , so that the wire protection cover  172  may be held in the first mounting groove  111  in a surface contact manner. 
     As used herein, the wire protection cover  172  may be made of soft rubber, so that the connection wire  17  may be bent to match the shape of the first mounting groove  111 . It may be easy to understand that the wire body  171  may be thin. If the wire body  171  is directly installed in the first mounting groove  111 , a contact area with the bottom of the first mounting groove  111  may be small, and it is difficult to be firmly fixed therein. In the embodiment, the wire protection cover  172  may be further wrapped around the periphery of the wire body  171 , which, on the one hand, may play a role of protecting the wire body  171 , and, on the other hand, increase the contact area between the connection wire  17  and the first mounting groove  111  by adjusting the surface area of the wire protection cover  172  to reliably fix the wire body  171  inside the first mounting groove  111 . 
     Further, the sectional shape of the first mounting groove  111  may be a shape to allow the wire protection cover  172  to be held in the first mounting groove  111  with a large area of surface contact. For example, the shape may be U-shaped, rectangular, or wavy, and be not specifically limited herein. Correspondingly, the shape of a side of the wire protection cover  172  facing the bottom of the first mounting groove  111  may correspond to the shape, so that the wire protection cover  172  may be directly or indirectly fitted to the bottom of the first mounting groove  111 . 
     In an application scenario, further referring to  FIG.  7   , an adhesive layer  18  may be disposed between the wire protection cover  172  and the eyeglass rim  11 , so that the wire protection cover  172  may be fixed in the first mounting groove  111  through the adhesive layer  18 . 
     As used herein, the adhesive layer  18  may be disposed on the bottom of the first mounting groove  111 , or further extended to both sides and disposed on a side wall near the bottom of the first mounting groove  111 , thereby making the adhesive layer  18  to wrap around the wire protection cover  172  to more firmly fix the connection wire  17  inside the first mounting groove  111 . 
     Specifically, in the application scenario, a section of the first mounting groove  111  may be rectangular. The bottom of the first mounting groove  111  and a side of the wire protection cover  172  facing the bottom of the first mounting groove  111  may be both flat, and the adhesive layer  18  may be a double-sided adhesive layer disposed therebetween. 
     Further, in one embodiment, a side of the wire protection cover  172  facing the top-side edge  131  of the eyeglass lens  13  may be disposed with a convex portion  1721  corresponding to the wire body  171 . The top-side edge  131  of the spectacle lens  13  may be disposed with a clearance slot  1311  for receiving the convex portion  1721 . 
     Specifically, the section of the wire body  171  may be circular. The wire protection cover  172  may be flush with the wire body  171  on the side of the wire body  171  facing the bottom of the first mounting groove  111 . The side of the wire body  171  facing away from the bottom of the first mounting groove  111  may still present the shape of the wire body  171 , thereby forming the corresponding convex portion  1721 . 
     Further, the top-side edge  131  of the spectacle lens  13  may need to be further disposed inside the first mounting groove  111 . In the embodiment, the top-side edge  131  may be further disposed with the clearance slot  1311  for receiving the convex portion  1721 , so that the connection wire  17  installed inside the first mounting groove  111  may be at least partially accommodated in the clearance slot  1311  corresponding to the top-side edge  131 . 
     Further, the convex portion  1721  may be located in a middle region of the wire protection cover  172  along a width direction of the wire protection cover  172  to form abutting portions  1722  on two sides of the convex portion  1721 . The two abutting portions  1722  may abut on the top-side edges  131  on two sides of the clearance slot  1311 , respectively. As used herein, the width direction of the wire protection cover  172  may refer to a direction perpendicular to a direction of the wire protection cover  172  along the first mounting groove  111 , specifically a direction indicated by W in  FIG.  10   . 
     It may be easy to understand that the depth of the first mounting groove  111  may be limited. If the top-side edge  131  of the spectacle lens  13  is flush with the convex portion  1721  of the connection wire  17 , or a side of the wire protection cover  172  and the wire body  171  facing away from the bottom of the first mounting groove  111  is flush with the wire body  171 , an insertion depth of the top-side edge  131  of the spectacle lens  13  in the first mounting groove  111  may be reduced, which may disadvantage the stable installation of the spectacle lens  13  in the eyeglass rim  11 . In the embodiment, the top-side edge  131  of the spectacle lens  13  may avoid a portion of the connection wire  17  through the clearance slot  1311 , so that the top-side edge  131  may further extend towards the bottom of the first mounting groove  111  relative to the clearance slot  1311  and abut on the abutting portions  1722  on the two sides of the protruding portion  1721 . Therefore, the space occupied by the connection wire  17  in the first mounting groove  111  may be reduced to a certain extent, so that the spectacle lens  13  may be installed deeper inside the first mounting groove  111 , thereby improving the stability of the spectacle lens  13  in the eyeglass rim  11 . 
     In an application scenario, the eyeglass rim  11  may be thin, and at least a portion of the convex portion  1721  may be exposed outside the first mounting groove  111  to reduce the space of the eyeglass rim occupied by the connection wire  17 , thereby reducing the depth of the first mounting groove  111  and improving the stability of the eyeglass rim  11 . 
     As used herein, further referring to  FIG.  2    and  FIG.  12   ,  FIG.  12    is a partial structural diagram illustrating part B in  FIG.  7    according to some embodiments of the present disclosure. In one embodiment, the first buckle  1321  may include a first sub-edge  13211 , a second sub-edge  13212 , and a third sub-edge  13213 . 
     As used herein, the first sub-edge  13211  may be disposed adjacent to the top-side edge  131 . The second sub-edge  13212  may be disposed away from the top-side edge  131  and opposite to the first sub-edge  13211 . The third sub-edge  13213  may be connected to the first sub-edge  13211  and the second sub-edge  13212  on a side of the first sub-edge  13211  and the second sub-edge  13212  away from the spectacle lens  13 . 
     In the embodiment, the wire protection cover  172  may further extend to the first buckle groove  112  along the first sub-edge  13211 . 
     In the way, the wire protection cover  172  may be held in the first mounting groove  111  and extend to the first buckle groove  112  to be hidden in the eyeglass rim  11 . Therefore, when a user disassembles the spectacle lens  13  during use, the wire protection cover  172  may not be exposed after the spectacle lens  13  is disassembled to maintain the beauty of the eyeglasses. 
     Further, when extending towards the first buckle groove  112 , the wire protection cover  172  may end at a connection between the first sub-edge  13211  and the third sub-edge  13213 . Certainly, the wire protection cover  172  may also not end and continue to extend along the wire body  171 , as long as the wire protection cover  172  is not exposed when the spectacle lens  13  is disassembled. 
     Referring to  FIG.  13    together,  FIG.  13    is an enlarged sectional view illustrating a partial structure of eyeglasses according to an embodiment of the present disclosure. In the embodiment, the eyeglasses may further include rotating shaft(s)  19 . 
     As used herein, the count of the rotating shaft(s)  19  may be two, and be respectively used to connect the eyeglass rim  11  and the two eyeglass temples  15  so that the eyeglass rim  11  and the eyeglass temples  15  may rotate relative to the rotating shaft  19 . As used herein, the rotating shaft  19  may be disposed with a rotating shaft wiring channel  191  in an axial direction. The connection wire  17  may be disposed inside the shaft wiring channel  191  and extend to the eyeglass rim  11  and the eyeglass temples  15 , respectively. 
     Specifically, in the embodiment, after the connection wire  17  passes through the rotating shaft wiring channel  191 , one end of the connection wire  17  may extend directly to one of the eyeglass temples  15 , and the other end of the connection wire  17  may enter the eyeglass rim  11  and further extend to another one of the eyeglass temples  15  along the first mounting groove  111 , thereby electrically connecting the two function components  16  located inside the two eyeglass temples  15 , respectively. 
     In the embodiment, the connection wire  17  near the rotating shaft wiring channel may not include the wire protection cover  172 . The rotating shaft wiring channel  191  may pass through the rotating shaft  19 . 
     It may be easy to understand that relative positions of structures near the rotating shaft  19  may change when the eyeglass rim  11  and the eyeglass temple  15  are folded. At this time, if the connection wire  17  located at the connection between the eyeglass rim  11  and the eyeglass temple  15  is directly disposed around the periphery of the rotating shaft  19 , the connection wire  17  herein may be compressed or pulled, even deformed or broken with the folding of eyeglass rim  11  or eyeglass temples  15 , which may affect the stability of the connection wire  17  and shorten the service life of the connection wire  17 . 
     In the embodiment, the rotating shaft  19  may be disposed with the shaft wiring channel  191  along the axial direction. The connection wire  17  located at the connection between the eyeglass rim  11  and the eyeglass temple  15  may pass through the shaft wiring channel  191 . Therefore, when the eyeglass rim  11  and the eyeglass temple  15  are folded, the connection wire  17  located inside the rotating shaft wiring channel  191  may only generate a certain amount of rotation with the rotation of the rotating shaft  19  to reduce the folding, compressing or pulling of the connection wire  17 , thereby protecting the connection wire  17  to a certain extent, improving the stability of the connection wire  17 , and extending the service life of the connection wire  17 . 
     As used herein, in the embodiment, an inner diameter of the rotation shaft wiring channel  191  may be larger than an outer diameter of the connection wire  17 . For example, the inner diameter of the shaft wiring channel  191  may be twice the outer diameter of the connection wire  17 . Accordingly, a binding effect of the inner side wall of the axis wiring channel  191  on the connection wire  17  may be reduced, thereby reducing the rotation of the connection wire  17  when the eyeglass rim  11  and the eyeglass temple  15  are folded. 
     Referring to  FIG.  13    and  FIG.  14    together,  FIG.  14    is a schematic structural diagram illustrating a rotating shaft and a connection wire of eyeglasses according to an embodiment of the present disclosure. In the embodiment, the rotating shaft  19  may include a first rotating shaft  192 . Two ends of the first rotating shaft  192  may be respectively connected to the eyeglass rim  11  and the eyeglass temple  15 . The rotating shaft wiring channel  191  may be disposed along an axial direction of the first rotating shaft  192 . The shaft wiring channel  191  may communicate with the outside through a wiring port  1921  disposed on at least one end surface of the first rotating shaft  192 . The connection wire  17  may extend to the eyeglass rim  11  or the eyeglass temples  15  through the wiring port  1921 . 
     It should be noted that, in the embodiment, the first rotating shaft  192  may be rotatably connected to one of the eyeglass rim  11  and the eyeglass temples  15 , and fixedly connected to another, so that the eyeglass rim  11  and the eyeglass temples  15  may be rotatably connected around the first rotating shaft  192 . 
     Specifically, in the embodiment, the rotating shaft wiring channel  191  may be disposed inside the first rotating shaft  192 , and further communicate with the outside through the wiring port  1921 . 
     Specifically, the rotating shaft wiring channel  191  may penetrate at least one end surface of the first rotating shaft  192  to form the wiring port  1921  of the rotating shaft wiring channel  191 . Therefore, the connection wire  17  may extend from the shaft wiring channel  191  through the at least one end surface of the first rotating shaft  192 , and then extend to the eyeglass rim  11  or the eyeglass temples  15 . It may be easy to understand that the periphery of the end surface of the first rotating shaft  192  may have a relatively large movement space. The connection wire  17  extending from the end surface of the first rotating shaft  192  may be accommodated inside the movement space. And if the first rotating shaft  192  at the end face is rotatably connected to the corresponding eyeglass rim  11  or eyeglass temple  15 , when the eyeglass rim  11  and the eyeglass temple  15  fold and rotate, the movement space may be appropriately buffered a twist of the connection wire  17  near the wiring port  1921  on the end surface with the rotation of the first rotating shaft  192 , thereby further reducing the twisting degree of the connection wire  17  and improving the stability of connection wire  17 . 
     Referring to  FIG.  15   ,  FIG.  15    is a schematic structural diagram illustrating a first rotating shaft of eyeglasses according to an embodiment of the present disclosure. In the embodiment, the wiring port  1921  may include a first wiring port  19211  and a second wiring port  19212  respectively disposed on two ends of the first rotating shaft  192 . The rotating shaft wiring channel  191  may communicate with the outside through the two wiring ports  1921 , so that the connection wire  17  may pass through the two ends of the first rotating shaft  192  and extend to the eyeglass rim  11  and the eyeglass temple  15  through the first wiring port  19211  and the second wiring port  19212 , respectively. 
     In other words, in the application scenario, the connection wire  17  at the connection between the eyeglass rim  11  and the eyeglass temple  15  may be disposed inside the rotating shaft wiring channel  191  in the first rotating shaft  192 , and extend from the rotating shaft wiring channel  191  through the two ends of the first rotating shaft  192 , respectively. At this time, since large movement spaces exist on the periphery of two end surfaces of the first rotating shaft  192 , the connection wire  17  extending from the two end surfaces of the first rotating shaft  192  may only move or twist slightly without compressing or deforming when the relative rotation occurs between the eyeglass rim  11  and the eyeglass temple  15 . 
     Referring to  FIG.  14   , in the embodiment, the wiring port  1921  may include a first wiring port  19213  and a second wiring port  19214 . As used herein, the first wiring port  19213  may be disposed on an end surface of the first rotating shaft  192 , and the second wiring port  19214  may be disposed on a side wall of the first rotating shaft  192 . Therefore, one end of the shaft wiring channel  191  may penetrate the end surface of the first rotating shaft  192  in the axial direction through the first wiring port  19213 , and the other end may penetrate the side wall of the first rotating shaft  192  through the second wiring port  19214 , and then communicate with the outside. The connection wire  17  may extend to the eyeglass rim  11  and the eyeglass temple  15  through the first wiring port  19213  and the second wiring port  19214 , respectively. 
     Similarly, a large movement space may be disposed near the end face of the first rotating shaft  192  of the first wiring port  19213 . When a relative movement occurs between the eyeglass rim  11  and the eyeglass temple  15 , the connection wire  17  near the first wiring port  19213  may only undergo a relative shift, or a small twist. 
     In an application scenario, the first rotating shaft  192  may be fixedly connected to one of the eyeglass rim  11  and the eyeglass temple  15  disposed near the second wiring port  19214 , and rotatably connected to another of the eyeglass rim  11  and the eyeglass temple  15  disposed near the first wiring port  19213 . That is, the first rotating shaft  192  may be rotatably connected to one of the eyeglass rim  11  or the eyeglass temple  15  at the wiring port  1921  disposed on the end surface. The first rotating shaft  192  may be fixedly connected to another of the eyeglass rim  11  or the eyeglass temple  15  at the wiring port  1921  disposed on the side wall. 
     In an application scenario, the first rotating shaft  192  may be closed to the eyeglass rim  11  at the first wiring port  19213 , and rotatably connected to the eyeglass rim  11 . The first rotating shaft  192  may be closed to the eyeglass temple  15  at the second wiring port  19214 , and fixedly connected to the eyeglass temple  15 . 
     It should be noted that, in this application scenario, the first rotating shaft  192  is rotatably connected to the eyeglass rim  11 , and the relative rotation between the eyeglass rim  11  and the eyeglass temple  15  may cause the relative movement of the connection wire  17  at the first wiring  19213 . However, since the first wiring port  19213  is disposed on the end surface of the first rotating shaft  192 , similar to the embodiment described above, the end surface of the first rotating shaft  192  may have a large movement space. When the eyeglass rim  11  and the eyeglass temple  15  are folded and rotated, and the connection wire  17  near the wiring port  1921  on the end surface is twisted to a certain extent with the rotation of the first rotating shaft  192 , the movement space may be appropriately buffered, and the twist may be turned into a shift or a small twist, without compressing or pulling the connection wire, thereby improving the stability of the connection wire and extending the service life of the connection wire. 
     In addition, the first rotating shaft  192  may be fixedly connected to the eyeglass temple  15  at the second wiring port  19214 . It may be easy to understand that the eyeglass temple  11  and the first rotating shaft  192  may be synchronized when the relative rotation occurs between the eyeglass rim  11  and the eyeglass temple  15 . Hence, the connection wire  17  in the shaft wiring channel  191  may extend through the second wiring port  19214  into the connection wire  17  of the eyeglass temple  11  without twisting, compressing, or pulling. Therefore, at this time, the second wiring port  19214  may be disposed on the end surface of the first rotating shaft  192  or on the side wall of the first rotating shaft  192 . The relative rotation between eyeglass rim  11  and eyeglass temple  15  may not cause the twisting, compressing, pulling, etc., of the connection wire  17  herein. 
     In other embodiments, if the first rotating shaft  192  and the eyeglass temple  15  are rotatably connected at the second wiring port  19214 , the relative rotation between thereof may allow the connection wire  17  to move, which may be constrained by the side wall of the first rotating shaft at the second wiring port  19214 , so that the connection wire  17  may be compressed between the side wall of the first rotating shaft and the eyeglass temple  15 . 
     If the first rotating shaft  192  is near the eyeglass temple  15  at the first wiring port  19213  and rotatably connected to the eyeglass temple  15 , the first rotating shaft  192  may be near the eyeglass rim  11  at the second wiring port  19214  and fixedly connected to the eyeglass rim  11 . For the same reason, when the eyeglass rim  11  and the eyeglass temple  15  are folded, the connection wire  17  inside the rotating shaft wiring channel  191  and near the first wiring port  19213  and the second wiring port  19214  may be still only slightly twisted or moved. 
     Referring to  FIG.  14   , in one embodiment, the rotating shaft  19  may further include a second shaft  193  coaxial with and spaced from the first rotating shaft  192 . 
     In the embodiment, the second rotating shaft  193  may be disposed on a side of the first rotating shaft  192  near the first wiring port  19213 . Certainly, in other embodiments, the second rotating shaft  193  may also be disposed on a side of the first rotating shaft  192  closed to the second wiring port  19214 . 
     Referring to  FIG.  16   ,  FIG.  16    is a partial exploded view illustrating eyeglasses according to an embodiment of the present disclosure. In the embodiment, the eyeglass rim  11  may include first lug(s)  113 . Specifically, the count of the first lug(s)  113  may be two, and be respectively disposed at two ends of the eyeglass rim  11  connecting to the two eyeglass temples  15  and protrude towards the corresponding eyeglass temples  15 . 
     The eyeglass temple  15  may include a second lug  1501  and a third lug  1502  disposed at intervals. As used herein, the second lug  1501  and the third lug  1502  may face ends of the eyeglass rim  11  connected to the eyeglass temple  15  at which the lugs are located. In addition, when the user wears the eyeglasses, the second lug  1501  and the third lug  1502  may be connected to a side away from the head of the user, thereby making the eyeglasses more overall and more beautiful in appearance. In an application scenario, the second lug  1501  and the third lug  1502  disposed at intervals may be formed by disposing a groove in the middle of an end of the eyeglass temple  15  facing the eyeglass rim  11 . 
     Further, ends of the first rotating shaft  192  and the second rotating shaft  193  closed to each other may be connected to the first lug  113 . Ends of the first rotating shaft  192  and the second rotating shaft  193  away from each other may be connected to the second lug  1501  and the third lug  1502 , respectively, so as to maintain the first lug  113  between the second lug  1501  and the third lug  1502 . 
     As used herein, referring to  FIG.  14    continuously, in one embodiment, the first wiring port  19213  may be disposed on an end surface of the first rotating shaft  192  near the second rotating shaft  193 . The second wiring port  19214  may be disposed on a side wall of the first rotating shaft near the second lug  1501 . The first rotating shaft may be rotatably connected to the first lug  113  and fixedly connected to the second lug  1501 . 
     Specifically, in the embodiment, one end of the connection wire  17  inside the rotating shaft wiring channel  191  may extend from the first wiring port  19213  and pass through an interval between the first rotating shaft  192  and the second rotating shaft  193 . Further, in an application scenario, the first lug  113  may be disposed with a wiring channel connected to the first wiring port  19213 , so that the connection wire  17  may further enter the eyeglass rim  11  from the first lug  113 . 
     In addition, the other end of the connection wire  17  inside the rotating shaft wiring channel  191  may extend from the second wiring port  19214 . Further, in an application scenario, the third lug  1502  may be disposed with a wiring channel communicating with the second wiring port  19214 , so that the connection wire  17  may further enter the eyeglass temple  15  through the wiring channel of the third lug  1502 . 
     As used herein, the second wiring port  19214  may be a through-hole disposed on a side wall of the first rotating shaft  192 , and communicated with the rotating shaft wiring channel  191  without penetrating an end of the first rotating shaft  192 . In the embodiment, the second wiring port  19214  may be further penetrated along the side wall of the first rotating shaft  192  to an end of the first rotating shaft  192  away from the first wiring port  19213 . It may be easy to understand that, in the embodiment, the second wiring port  19214  may have a larger space. Therefore, when the connection wire  17  is moved for some reason, the restriction on the connection wire  17  may be further reduced, and the damage to the side wall of the first rotating shaft  192  may be further reduced. 
     Referring to  FIG.  16   ,  FIG.  17   , and  FIG.  18    together,  FIG.  17    is a schematic structural diagram illustrating an eyeglass rim and a spectacle lens of eyeglasses according to an embodiment of the present disclosure, and  FIG.  18    is a partial structural schematic diagram illustrating an eyeglass temple of eyeglasses according to an embodiment of the present disclosures. In the embodiment, the first lug  113  and the second lug  1501  may be coaxially disposed with a first accommodating hole  1131  and a second accommodating hole  15011 , respectively. Sizes of the first accommodating hole  1131  and the second accommodating hole  15011  may be set to allow the first rotating shaft  192  to be inserted into the first accommodating hole  1131  from the outside of the eyeglass temple  15  through the second accommodating hole  15011 , such that the first rotating shaft  192  may be in an interference fit with the second accommodating hole  15011  and in a clearance fit with the first accommodating hole  1131 . 
     Specifically, the second accommodating hole  15011  may be a through-hole penetrating the second lug  1501 . The first accommodating hole  1131  may correspond to the second accommodating hole  15011  and penetrate at least a portion of the first lug  113 . As used herein, an inner diameter of the first accommodating hole  1131  may be larger than the second accommodating hole  15011 . An outer diameter of the first rotating shaft  192  may be between the first accommodating hole  1131  and the second accommodating hole  15011 . Therefore, the first rotating shaft  192  may be fixedly connected to the eyeglass temple  15  and rotatably connected to the eyeglass rim  11  so that the eyeglass rim  11  and the eyeglass temple  15  may be rotated around the first rotating shaft  192  to be folded or unfolded. 
     Further, in an embodiment, the first lug  113  and the third lug  1502  may be coaxially disposed with a third accommodating hole  1132  and a fourth accommodating hole  15021 , respectively. Sizes of the third accommodating hole  1132  and the fourth accommodating hole  15021  may be set to allow the second rotating shaft  193  to be inserted into the third accommodating hole  1132  from the outside of the eyeglass temple  15  via the fourth accommodating hole  15021 , such that the second rotating shaft  193  may be in an interference fit with the third accommodating hole  1132  and in a clearance fit with the fourth accommodating hole  15021 , or the second rotating shaft  193  may be in a clearance fit with the third accommodating hole  1132  and in an interference fit with the fourth accommodating hole  15021 . 
     In the embodiment, the third accommodating hole  1132  and the fourth accommodating hole  15021  may be coaxial with both the first accommodating hole  1131  and the second accommodating hole  15011 . As used herein, the third accommodating hole  1132  may penetrate at least a portion of the first lug  113 . In one application scenario, the first accommodating hole  1131  and the third accommodating hole  1132  may be coaxially penetrated. Specifically, as described in the above embodiment, the first lug  113  of the eyeglass rim  11  may be disposed with a wiring channel connected to the first wiring port  19213 . The first accommodating hole  1131  and the third accommodating hole  1132  may be respectively disposed on both sides of the wiring channel located inside the first lug  113  and both pass through the wiring channel. The fourth accommodating hole  15021  may penetrate the third lug  1502 . As used herein, the outer diameter of the second rotating shaft  193  may be between the inner diameter of the third accommodating hole  1132  and the inner diameter of the fourth accommodating hole  15021 . The inner diameter of the third accommodating hole  1132  may be larger than the fourth accommodating hole  15021 . Alternatively, the inner diameter of the fourth accommodating hole  15021  may be larger than the third accommodating hole  1132 . Therefore, the second rotating shaft  193  may be fixedly connected to the eyeglass temple  15  and rotatably connected to the eyeglass rim  11 , or the second rotating shaft  193  may be fixedly connected to the eyeglass rim  11  and rotatably connected to the eyeglass temple  15 , so that the eyeglass rim  11  and the eyeglass temple  15  may be rotated around the first rotating shaft  192  to be folded or unfolded. 
     In one embodiment, the second rotating shaft  193  may be a solid shaft, and the diameter may be less than that of the first rotating shaft  192 . In the wearing state, the second shaft  193  may be located on the upper side of eyeglass temple  15 , and the first rotating shaft may be located on the lower side of eyeglass temple  15 . 
     It should be noted that, since the rotating shaft wiring channel  191  may be disposed inside the first rotating shaft  192 , the outer diameter of the first rotating shaft  192  may be larger, which may adversely satisfy aesthetic needs of the user. Therefore, in the embodiment, the second rotating shaft  193  having a smaller outer diameter may be further disposed. Hence, when the user wears the eyeglasses, the second rotating shaft  193  may be disposed on an upper portion that is easily found, and the first rotating shaft  192  may be disposed on a lower portion that is not easily observed. Since the outer diameter of the second rotating shaft  193  is smaller, the overall aesthetic effect of the eyeglasses may be improved to a certain extent. 
     Certainly, in other embodiments, the first rotating shaft  192  and the second rotating shaft  193  may also be other cases. For example, the second rotating shaft  193  may also be a hollow shaft, and the diameter of the second rotating shaft  193  may be larger than the diameter of the first rotating shaft  192 . Alternatively, in the wearing state, the second rotating shaft  193  may be disposed on a lower side of the eyeglass temple  15 , and the first rotating shaft  192  may be disposed on an upper side of the eyeglass temple  15 , or the like, and be not limited herein. 
     In addition, referring to  FIG.  14   , a connection between an end surface  1922  of the first rotating shaft  192  for disposing the first wiring port  19213  and an inner wall surface  1923  of the first rotating shaft  192  for defining the rotating shaft wiring channel  191  may be arc-shaped. It may be easy to understand that, when the rotation between the eyeglass rim  11  and the eyeglass temple  15  through the rotating shaft  19  occurs, since the first rotating shaft  192  and the eyeglass rim  11  are rotatably connected, the connection wire  17  at the first wiring port  19213  may be moved. In the embodiment, the connection between the end surface  1922  of the first rotating shaft  192  and the inner wall surface  1923  may be arc-shaped. Therefore, when the connection wire  17  at the first wiring port  19213  moves and contacts with the first rotating shaft  192 , the connection wire  17  may be avoided to be cut if the connection is too sharp, thereby further protecting the connection wire  17 . 
     In an application scenario, a connection between the end surface of the first rotating shaft  192  for disposing the second wiring port  19214  and the inner wall surface  1923  of the first rotating shaft  192  for defining the rotating shaft wiring channel  191  may also be arc-shaped. Similarly, in this way, the connection wire  17  may be further protected. 
     It should be noted that the above description of the rotating shaft and wiring in the eyeglasses may be only specific examples, and should be not considered as the only feasible implementation. Obviously, for those skilled in the art, after understanding the basic principle of the rotating shaft and wiring in the eyeglasses, it may be possible to make various modifications and changes in the form and details of the specific manner and operation of implementing the rotating shaft and wiring in the eyeglasses without departing from these principles, but these modifications and changes are still within the scope described above. For example, the branch circuit board may also include a third pad and a third flexible circuit board. All such variations may be within the protection scope of the present disclosure. 
     In some embodiments, as shown in  FIG.  1   , a speaker includes an earphone core  102  and a core housing  108 . In an application scenario, the speaker of the eyeglasses may include, but is not limited to, a bone conduction speaker, an air conduction speaker. The following may further illustrate a fitting position on human body based on the bone conduction speaker. It should be known that without departing from the principles, the following illustrations may also be applied to the air conduction speaker. 
     In some embodiments, the position of the speaker relative to the eyeglass temple  15  may not be fixed. Specifically, the core housing  108  may be rotated to change the position of each speaker relative to the connected eyeglass temple  15 , thus the speaker may fit on different parts of the user&#39;s body, and the user may adjust it based on his or her preferences. Due to the vibrations transmitted by different bones are different, users may feel different sound qualities, and it is also convenient for users with different sizes of head. For example, in  FIG.  7   , the speaker may be fixed on the ear by the eyeglass temple  15 , and the speaker may be located behind the ear. In some embodiments, the connecting end of the eyeglass temple  15  and the speaker may be set according to a position that the user is accustomed to. For example, the speaker and the eyeglass temple  15  may be connected by hinged connection, if the user is used to placing the speaker behind the ear, the speaker may be set behind the ear by adjusting a hinge component. It should be noted that, the connection between the eyeglass temple  15  and the speaker  21  is not limited to the connection described above. For example, the eyeglass temple  15  and the speaker may also be connected by clamping. In some embodiments, the speaker may be fitted to any parts of the user&#39;s head, such as the top of the head, the forehead, cheeks, sideburns, auricles, the back of auricles, or the like. For example, a bracket spanning the top of the head may be arranged between the eyeglass temples  15  to reduce the supporting force of the nose bridge on the eyeglasses, and the speaker may be arranged on the bracket. In some embodiments, the way the bone conductive earphone fitted to the head may be surface fitted or point fitted. The contact surface may be arranged with a gradient structure, and the gradient structure refers to an area where the height of the contact surface changes. The gradient structure may include a convex/concave structure, a step-like structure, etc., on the outside of the contact surface (the side that is fitted to the user), or on the inside of the contact surface (the side facing away from the user). 
     It should be noted that the above illustration of the fitting position of the speaker is only a specific example and should not be regarded as the only feasible implementation solution. Obviously, for those skilled in the art, after understanding the basic principles of fitting, it is possible to make various modifications and changes in forms and details to the specific methods and steps of fitting without departing from the principles, but the modifications and changes are still within the scope illustrated above. For example, the position of clamping may be adjusted based on the fitting part of the speaker and the head. Such deformations are all within the protection scope of the present disclosure. 
       FIG.  19    is a structural diagram and an application scenario of a bone conduction speaker according to some embodiments of the present disclosure. Referring to  FIG.  1    and  FIG.  19   , the structural diagram in  FIG.  19    illustrating a speaker including the earphone core  102  and the core housing  108  in  FIG.  1   . The following only takes the bone conduction speaker as an example to illustrate the application scenario and structure of the speaker. In some embodiments, as shown in  FIG.  19   , the bone conduction speaker may include a driving component  1901 , a transmission component  1902 , a panel  1903  (the panel  1903  may also be referred to as a housing panel, which is a panel on the core housing facing human), a housing  1904 , or the like. Referring to  FIG.  1   , the panel  1903  and the housing  1904  are consistent with the core housing (shown in  FIG.  1   ). The driving component  1901  and the transmission component  1902  are consistent with the earphone core  102  (shown in  FIG.  2   ). In some embodiments, the housing  1904  may include a housing back panel and housing side panels. The housing back panel is connected with the panel  1903  through the housing side panels. The driving component  1901  may transmit vibration signal(s) to the panel  1903  and/or the housing  1904  through the transmission component  1902 , so as to transmit a sound to human body by contacting human skin through the panel  1903  or the housing  1904 . In some embodiments, the panel  1903  and/or the housing  1904  may be in contact with human skin at the tragus, so as to transmit a sound to human body. In some embodiments, the panel  1903  and/or the housing  1904  may be in contact with human skin on the back of the auricle. 
     In some embodiments, a straight line B (or a vibrating direction of a driving device) of a driving force generated by the driving component  1901  and a normal line A of the panel  1903  may form an angle θ. In other words, the straight line B is not parallel to the normal line A. 
     The panel has an area that contacts or abuts the user&#39;s body, such as human skin. It should be understood that when the panel is covered with other materials (such as silicone and other soft materials) to enhance the user&#39;s wearing comfortability, the panel and the user&#39;s body are not in direct contact, but abut against each other. In some embodiments, when the bone conduction speaker is worn on the user&#39;s body, the whole area of the panel contacts or abuts the user&#39;s body. In some embodiments, when the bone conduction speaker is worn on the user&#39;s body, a part of the panel contacts or abuts the user&#39;s body. In some embodiments, the area of the panel contacting or abutting the user&#39;s body may account for more than 50% of the entire area of the panel. More preferably, it may account for more than 60% of the entire area of the panel. In general, the area of the panel contacting or abutting the user&#39;s body may be flat or curved. 
     In some embodiments, when the area of the panel contacting or abutting the user&#39;s body is a flat surface, its normal line meets the general definition, that is, a dashed line perpendicular to the flat surface. In some embodiments, when the area contacting or abutting the user&#39;s body of the panel is a curved surface, its normal line is the average normal line of the area, wherein, the average normal line is defined as follows: 
     
       
         
           
             
               
                 
                   = 
                   
                     
                       
                         ∯ 
                         S 
                       
                       
                         
                           r 
                           ^ 
                         
                         ⁢ 
                             
                         ds 
                       
                     
                     
                       
                         ❘ 
                         &#34;\[LeftBracketingBar]&#34; 
                       
                       
                         
                           ∯ 
                           S 
                         
                         
                           
                             r 
                             ^ 
                           
                           ⁢ 
                               
                           ds 
                         
                       
                       
                         ❘ 
                         &#34;\[RightBracketingBar]&#34; 
                       
                     
                   
                 
               
               
                 
                   ( 
                   1 
                   ) 
                 
               
             
           
         
       
     
     where, {circumflex over (r)} 0  is the average normal line; {circumflex over (r)} is the normal line of any point on the curved surface; ds is a surface unit. 
     Further, the curved surface is a quasi-flat surface that is close to the flat surface. That is, the curved surface is a surface that an angle between a normal line of any point of at least 50% of the area on the curved surface and the average normal line is less than a set threshold. In some embodiments, the set threshold may be less than 10°. In some embodiments, the set threshold may be less than 5°. 
     In some embodiments, the straight line B of the driving force and the normal line A′ of the area of the panel  1903  for contacting or abutting the user&#39;s body may form the angle θ. A value range of the angle θ may be 0&lt;θ&lt;180°. Further, the value range may be 0&lt;θ&lt;180° and not equal to 90°. In some embodiments, it is assumed that the straight line B has a positive direction pointing to the outside of the bone conduction speaker, and the normal line A of the panel  1903  (or the normal line A′ of a contact surface of the panel  1903  and the human skin) also has a positive direction pointing to the outside of the bone conduction speaker. Thus, the angle θ formed by the normal line A or A′ and the straight line B in the positive direction is an acute angle, that is, 0&lt;θ&lt;90°. More descriptions about the normal line A and A′ may be found in  FIG.  21    and the descriptions thereof. 
       FIG.  20    is a schematic diagram illustrating a direction of an included angle according to some embodiments of the present disclosure. As shown in  FIG.  20   , in some embodiments, a driving force generated by a driving device has a component in a first quadrant and/or a third quadrant of an XOY plane coordinate system. As used herein, the XOY plane coordinate system is a reference coordinate system whose origin O is located on a contact surface between the panel and/or the housing and the human body after the bone conduction speaker is worn on the human body. The X axis is parallel to the coronal axis of the human body, the Y axis is parallel to the sagittal axis of the human body, and the positive direction of the X axis faces the outside of the human body, the positive direction of the Y axis faces the front of the human body. Quadrants should be understood as four regions divided by the horizontal axis (such as X axis) and the vertical axis (such as Y axis) in a rectangular coordinate system. Each region is a quadrant. The quadrant is centered at the origin, and the X axis and Y axis are the dividing lines. The upper right region (the region enclosed by the positive half axis of the X axis and the positive half axis of the Y axis) is the first quadrant, the upper left region (the region enclosed by the negative half axis of the X axis and the positive half axis of the Y axis) is the second quadrant, the lower left region (the region enclosed by the positive half axis of the X axis and the negative half axis of the Y axis) is the third quadrant, and the lower right region (the region enclosed by the positive half axis of the X axis and the negative half axis of the Y axis) is the fourth quadrant. The points on the X axis and the Y axis do not belong to any quadrant. It should be understood that the driving force in the embodiment may be directly located in the first quadrant and/or the third quadrant of the XOY plane coordinate system, or the driving force may point to other directions, but the projection or component in the first quadrant and/or the third quadrant is not equal to 0 in the XOY plane coordinate system, and the projection or component in a direction of a Z axis may be equal to 0 or not equal to 0. As used herein, the Z axis is perpendicular to the XOY plane and passes through the origin O. In some embodiments, the angle θ between the straight line of the driving force and the normal line of the area contacting or abutting the user&#39;s body of the panel may be any acute angle, for example, the range of the angle θ is 5°α80°. More preferably, the range is 15° ˜70°. More preferably, the range is 25°˜60°. More preferably, the range is 25° ˜50°. More preferably, the range is 28°˜50°. More preferably, the range is 30° ˜39°. More preferably, the range is 31°˜38°. More preferably, the range is 32° ˜37°. More preferably, the range is 33°˜36°. More preferably, the range is 33° ˜35.8°. More preferably, the range is 33.5°˜35°. Specifically, the angle θ may be 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34°, 34.2°, 35°, 35.8°, 36°, 37°, 38°, etc., wherein the error is controlled within 0.2°. It should be noted that the illustrations of the driving force direction described above should not be interpreted as a limitation of the driving force in the present disclosure. In other embodiments, the driving force may also have component in the second and fourth quadrants of the XOY plane coordinate system, even the driving force may be located on the Y axis, or the like. 
       FIG.  21    is a structural diagram of a bone conduction speaker acting on human skin and bones according to the present disclosure. 
     In some embodiments, the straight line of the driving force is collinear or parallel to the straight line of the vibration of the driving device. For example, in a driving device based on the moving-coil principle, the direction of the driving force may be the same as or opposite to the vibrating direction of the coil and/or the magnetic circuit component. The panel may have a flat surface or curved surface, or there are a plurality of protrusions or grooves on the panel. In some embodiments, when the bone conduction speaker is worn on the user&#39;s body, the normal line of the area contacting or abutting the user&#39;s body of the panel is not parallel to the straight line of the driving force. In general, the area contacting or abutting the user&#39;s body of the panel is flat relatively. Specifically, it may have a flat surface, or a quasi-flat plane with little curvature. When the area contacting or abutting the user&#39;s body of the panel has a flat surface, the normal line of any point on it may be the normal line of the area. At this time, the normal line A of the panel  1903  may be parallel or coincident to the normal line A′ of the contact surface between the panel  1903  and human skin. When the panel used to contact the user&#39;s body is non-planar, the normal line of the area may be the average normal line. More detailed definition of the average normal line may be found in  FIG.  19    and the descriptions thereof. In some other embodiments, when the panel used to contact the user&#39;s body is non-planar, the normal line of the area may also be determined as follows: selecting a certain point in an area when the panel is in contact with human skin, determining a tangent plane of the panel at the selected point, determining a straight line that passes through the point and is perpendicular to the tangent plane, and designating the straight line as the normal line of the panel. When the panel used to contact the user&#39;s body is non-planar, different points correspond to different tangent planes of the panel, and the determined normal line may also be different. At this time, the normal line A′ is not parallel to the normal line A of the panel. According to a specific embodiment of the present disclosure, the straight line of the driving force (or the straight line of the vibration of the driving device) and the normal line of the area may form an angle θ, where 0&lt;θ&lt;180°. In some embodiments, when the straight line of the driving force has a positive direction pointing to the outside of the bone conduction speaker from the panel (or the contact surface between the panel and/or the housing and human skin), and the normal line of the designated panel (or the contact surface between the panel and/or the housing and human skin) has a positive direction pointing to the outside of the bone conduction speaker, the angle formed by the two straight lines in the positive direction is an acute angle. 
     As shown in  FIG.  21   , the bone conduction speaker may include a driving device (also referred to as a transducer in other embodiments), a transmission component  1803 , a panel  1801 , and a housing  1802 . In some embodiments, a coil  1804  and a magnetic circuit component  1807  are both ring-shaped. In some embodiments, the driving device adopts a moving-coil driving mode, and includes the coil  1804  and the magnetic circuit component  1807 . 
     In some embodiments, the coil  1804  and the magnetic circuit component  1807  have axes parallel to each other. The axis of the coil  1804  or the magnetic circuit component  1807  is perpendicular to the radial plane of the coil  1804  and/or the magnetic circuit component  1807 . In some embodiments, the coil  1804  and the magnetic circuit component  1807  have the same central axis. The central axis of the coil  1804  is perpendicular to the radial plane of the coil  1804  and passes through the geometric center of the coil  1804 . The central axis of the magnetic circuit component  1807  is perpendicular to the radial plane of the magnetic circuit component  1807  and passes through the geometric center of the magnetic circuit component  1807 . The axis of the coil  1804  or the magnetic circuit component  1807  and the normal line of the panel  1801  may form the angle θ described above. 
     Merely by way of example, the relationship between the driving force F and the deformation S of the skin will be illustrated below combined with  FIG.  21   . When the straight line of the driving force generated by the driving device is parallel to the normal line of the panel  1801  (i.e., the angle θ is zero), the relationship between the driving force and the total deformation of the skin is: 
         F   ⊥   =S   ⊥   ×E×A/h   (2)
 
     where, F ⊥  denotes the driving force, S ⊥  denotes the total deformation of the skin in the direction perpendicular to the skin, E denotes the elastic modulus of the skin, A denotes the contact area between the panel and the skin, h denotes a total thickness of the skin (i.e., the distance between the panel and the bone). 
     When the straight line of the driving force generated by the driving device is parallel to the normal line of the area contacting or abutting the user&#39;s body of the panel (i.e., the angle θ is 90°), the relationship between the driving force in the vertical direction and the total deformation of the skin may be shown in Equation (3): 
         F   //   =S   //   ×G×A/h   (3)
 
     where, F //  denotes the driving force, S //  denotes the total deformation of the skin in the direction parallel to the skin, G denotes the shear modulus of the skin, A denotes the contact area between the panel and the skin, h denotes total thickness of the skin (i.e., the distance between the panel and the bone). 
     The relationship between the shear modulus G and the elastic modulus E is: 
         G=E/ 2(1+γ)  (4)
 
     where, γ denotes the Poisson&#39;s ratio of the skin 0&lt;γ&lt;0.5. Thus the shear modulus G is less than the elastic modulus E, and under the same driving force, the corresponding total deformation of the skin S // &gt;S ⊥ . Generally, the Poisson&#39;s ratio of the skin is close to 0.4. 
     When the straight line of the driving force generated by the driving device is not parallel to the normal line of the area contacting or abutting the user&#39;s body of the panel, the driving force in the horizontal direction and the driving force in the vertical direction are expressed as the Equation (5) and Equation (6), respectively: 
         F   ⊥   =F ×cos(θ)  (5)
 
         F   //   =F ×sin(θ)  (6)
 
     where, the relationship between the driving force F and the deformation S of the skin may be shown in the following equation: 
     
       
         
           
             
               
                 
                   S 
                   = 
                   
                     
                       
                         
                           S 
                           ⊥ 
                           2 
                         
                         + 
                         
                           S 
                           // 
                           2 
                         
                       
                       2 
                     
                     = 
                     
                       
                         h 
                         A 
                       
                       × 
                       F 
                       × 
                       
                         
                           
                             
                               ( 
                               
                                 
                                   cos 
                                   ⁡ 
                                   ( 
                                   θ 
                                   ) 
                                 
                                 / 
                                 E 
                               
                               ) 
                             
                             2 
                           
                           + 
                           
                             
                               ( 
                               
                                 
                                   sin 
                                   ⁡ 
                                   ( 
                                   θ 
                                   ) 
                                 
                                 / 
                                 G 
                               
                               ) 
                             
                             2 
                           
                         
                         2 
                       
                     
                   
                 
               
               
                 
                   ( 
                   7 
                   ) 
                 
               
             
           
         
       
     
     When the Poisson&#39;s ratio is 0.4, the descriptions regarding the relationship between the angle θ and the total deformation of the skin may be found elsewhere of the present disclosure. 
       FIG.  22    is a diagram illustrating an angle-relative displacement relationship of a bone conduction speaker according to some embodiments of the present disclosure. As shown in  FIG.  22   , the relationship between the angle θ and the total deformation of the skin is that the greater the angle θ, and the greater the relative displacement, the greater the total deformation S of the skin. The greater the angle θ, and the less the relative displacement, the less the deformation S ⊥  of the skin in the vertical direction of the skin. When the angle θ is close to 90°, the deformation S ⊥  of the skin in the vertical direction of the skin gradually tends to 0. 
     The volume of the bone conduction speaker in the low frequency part is positively correlated with the total deformation of the skin S. The larger the S, the larger the volume of the bone conduction speaker in low frequency. The volume of the bone conduction speaker in the high frequency part is positively correlated with the deformation S ⊥  of the skin in the vertical direction of the skin. The larger the S ⊥ , the larger the volume of the bone conduction speaker in low frequency. 
     When the Poisson&#39;s ratio of the skin is 0.4, the detailed illustration of the relationship between the angle θ and total deformation of the skin S, the deformation S ⊥  of the skin in the vertical direction of the skin may be found in  FIG.  22   . As shown in  FIG.  22   , the relationship between the angle θ and the total deformation of the skin S is that the larger the angle θ and the larger the total deformation of the skin S, the larger the volume of the corresponding bone conduction speaker in the low frequency part. As shown in  FIG.  22   , the relationship between the angle θ and the deformation S ⊥  of the skin in the vertical direction of the skin is that the larger the angle θ and the smaller the deformation S ⊥  of the skin in the vertical direction of the skin, the smaller the volume of the corresponding bone conduction speaker in the high frequency part. 
     It may be seen from Equation (7) and curves in the  FIG.  22    that with the increase of the angle θ, the speed at which the total deformation of the skin S increases is different from the speed at which the deformation S ⊥  of the skin in the vertical direction of the skin decreases. The speed at which the total deformation of the skin S increases becomes faster at first, and then becomes slower, and the speed at which the deformation S ⊥  of the skin in the vertical direction of the skin decreases becomes faster and faster. In order to balance the volume of the bone conduction speaker in the low frequency part and the high frequency part, the angle θ should be at an appropriate value, for example, within a range of θ is 5°˜80°, 15°˜70°, 25°˜50°, 25°˜35°, 25°˜30°, or the like. 
       FIG.  23    is a schematic diagram illustrating frequency response curves of a bone conduction speaker in a low-frequency part correspond to different angles  8  according to some embodiments in the present disclosure. As shown in  FIG.  23   , the panel is in contact with the skin and transmits vibration to the skin. During this process, the skin may also affect the vibration of the bone conduction speaker, so as to affect the frequency response curve of the bone conduction speaker. From the above analysis, it is found that the larger the included angle, the larger the total deformation of the skin under the same driving force, and for the bone conduction speaker, it is equivalent to that the elasticity of the skin relative to the panel decreases. It may be further understood that when a certain angle θ is formed between the straight line of the driving force generated by the driving device and the normal line of the area contacting or abutting the user&#39;s body of the panel. Especially when the angle θ increases, the resonance peak in the low frequency area of the frequency response curve may be adjusted to a lower frequency area, thus making the low frequency to dive deeper and increasing signals in the low frequencies. Compared with other techniques to improve the low frequency components of the sound (e.g., adding a vibration transmission plate to the bone conduction speaker), setting the included angle may suppress the increase of the vibration effectively while increasing the energy of the low frequency, so as to reduce the sense of vibration, which improves the sensitivity of the low frequency of the bone conduction speaker significantly, and improves the sound quality and human experience. It should be noted that, in some embodiments, the increase of the low frequency and the reduction of the vibration may be expressed as when the angle θ increases in the range of (0,90°), the energy in the range of the low frequency of the vibration or the sound signal(s) increases, and the sense of vibration also increases, but the degree of energy increase in the low frequency range is greater than the degree of vibration sensation increase. Thus, in relative effect, the vibration sensation is reduced relatively. It may be seen in  FIG.  23   , when the included angle is relatively large, the resonance peak in the low frequency area may appear in a lower frequency range, which extends the flat part of the frequency curvature, so as to improve the sound quality of the speaker. 
     It should be noted that the illustration of the bone conduction speaker described above is only a specific example, and should not be regarded as the only feasible implementation. Obviously, for those skilled in the art, after the basic principles of the bone conduction speaker, it may be possible to make various modifications and changes in forms and details of the specific methods and steps for implementing the bone conduction speaker without departing from the principles, but the modifications and changes are still within the scope illustrated above. For example, the minimum angle θ between the straight line of the driving force generated by the driving device and the normal line of the area contacting or abutting the user&#39;s body of the panel may be any acute angle. The acute angle herein is not limited to 5°˜80° described above. The angle θ may be less than 5°, such as 1°, 2°, 3°, 4°, etc. In other embodiments, the angle θ may be larger than 80° and less than 90°, such as 81°, 82°, 85°, etc. In some embodiments, the specific value of the angle θ may not be an integer (e.g., 81.3°, 81.38°). Such deformations are all within the protection scope of the present disclosure. 
     In some embodiments, the speaker described above may also transmit the sound to the user through air conduction. When the air condition is used to transmit the sound, the speaker may include one or more sound sources. The sound source may be located at a specific position of the user&#39;s head, for example, the top of the head, a forehead, a cheek, a temple, an auricle, the back of an auricle, etc., without blocking or covering an ear canal.  FIG.  24    is a schematic diagram illustrating transmitting a sound through air conduction according to some embodiments of the present disclosure. 
     As shown in  FIG.  24   , a sound source  2810  and a sound source  2820  may generate sound waves with opposite phases (“+” and “−” in the figure may indicate the opposite phases). For brevity, the sound sources mentioned herein may refer to sound outlets of the speaker that may output sounds. For example, the sound source  2810  and the sound source  2820  may be two sound outlets respectively located at specific positions of the speaker (e.g., the core housing  108 , or the eyeglass temple  15 ). 
     In some embodiments, the sound source  2810  and the sound source  2820  may be generated by the same vibration device  2801 . The vibration device  2801  may include a diaphragm (not shown in the figure). When the diaphragm is driven to vibrate by an electric signal, the front side of the diaphragm may drive air to vibrate. The sound source  2810  may form at the sound output through a sound guiding channel  2812 . The back of the diaphragm may drive air to vibrate, and the sound source  2820  may be formed at the sound output hole through a sound guiding channel  2822 . The sound guiding channel may refer to a sound transmission route from the diaphragm to the corresponding outlet. In some embodiments, the sound guiding channel may be a route surrounded by a specific structure (e.g., the core housing  108  in  FIG.  1   , or the eyeglass temple  15  in  FIG.  7   ) on the speaker. It should to be known that in some alternative embodiments, the sound source  2810  and the sound source  2820  may also be generated by different vibrating diaphragms of different vibration devices, respectively. 
     Among the sounds generated by the sound source  2810  and the sound source  2820 , one portion may be transmitted to the ear of the user to form the sound heard by the user. Another portion may be transmitted to the environment to form a leaked sound. Considering that the sound source  2810  and the sound source  2820  are relatively close to the ears of the user, for convenience of description, the sound transmitted to the ears of the user may be referred to as a near-field sound. The leaked sound transmitted to the environment may be referred to as a far-field sound. In some embodiments, the near-field/far-field sounds of different frequencies generated by the speaker may be related to a distance between the sound source  2810  and the sound source  2820 . Generally speaking, the near-field sound generated by the speaker may increase as the distance between the two sound sources increases, while the generated far-field sound (the leaked sound) may increase with increasing the frequency. 
     For the sounds of different frequencies, the distance between the sound source  2810  and the sound source  2820  may be designed, respectively, so that a low-frequency near-field sound (e.g., a sound with a frequency of less than 800 Hz) generated by the speaker may be as large as possible and a high-frequency far-field sound (e.g., a sound with a frequency greater than 2000 Hz) may be as small as possible. In order to implement the above purpose, the speaker may include two or more sets of dual sound sources. Each set of the dual sound sources may include two sound sources similar to the sound source  2810  and the sound source  2820 , and generate sounds with specific frequencies, respectively. Specifically, a first set of the dual sound sources may be used to generate low frequency sounds. A second set of the dual sound sources may be used to generate high frequency sounds. In order to obtain more low-frequency near-field sounds, the distance between two sound sources in the first set of the dual sound sources may be set to a larger value. Since the low-frequency signal has a longer wavelength, the larger distance between the two sound sources may not cause a large phase difference in the far-field, and not form excessive leaked sound in the far-field. In order to make the high-frequency far-field sound smaller, the distance between the two sound sources in the second set of the dual sound sources may be set to a smaller value. Since the high-frequency signal has a shorter wavelength, the smaller distance between the two sound sources may avoid the generation of the large phase difference in the far-field, and thus the generation of the excessive leaked sounds may be avoided. The distance between the second set of the dual sound sources may be less than the distance between the first set of the dual sound sources. 
     It should be noted that the above description of the sound conduction manner for changing the air conduction may be only a specific example, and should not be considered as the only feasible implementation. Obviously, for those skilled in the art, after understanding the basic principles of the air conduction, it may be possible to target air conduction speaker of different shapes and structures without departing from these principles, but these changes may still be within the scope of the above description. For example, the sound guiding channel  2822  may be disposed in the eyeglasses according to other descriptions. All such variations are within the protection scope of the present disclosure. 
     The beneficial effects of the embodiments of the present disclosure may include but be not limited to the following. (1) Through the rotating shaft, the eyeglass rim and eyeglass temple may be connected, thereby protecting the connection wire in the eyeglasses, and extending the life of the connection wire. (2) The flexible circuit board may simplify the wiring manner in the speaker. (3) The user may adjust the fitting position of the speaker according to his or her own preferences and habits, which meets the requirement of the user. (4) The sound quality of the speaker may be improved by adjusting the angle θ between the normal line A of the panel or the normal line A′ of the panel contacting human skin and the straight line B of the driving force generated by the driving device. It should be noted that different embodiments may have different beneficial effects. In different embodiments, the possible beneficial effects may be any one or a combination of the above, and may be any other beneficial effects that may be obtained. 
     Having thus described the basic concepts, it may be rather apparent to those skilled in the art after reading this detailed disclosure that the foregoing detailed disclosure is intended to be presented by way of example only and is not limiting. Various alterations, improvements, and modifications may occur and are intended to those skilled in the art, though not expressly stated herein. These alterations, improvements, and modifications are intended to be suggested by this disclosure, and are within the spirit and scope of the exemplary embodiments of this disclosure.