Patent Publication Number: US-2023143417-A1

Title: Electronic device including speaker module

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application is a bypass continuation application of International Application No. PCT/KR2022/016450, filed on Oct. 26, 2022, which is based on and claims priority to Korean Patent Application No. 10-2021-0151106, filed on Nov. 5, 2021, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties. 
    
    
     BACKGROUND 
     1. Field 
     Embodiments disclosed in the disclosure relate to an electronic device including a speaker module, and a method for forming the same. 
     2. Description of Relate Art 
     In recent years, electronic devices, such as smartphone and tablet personal computers (PCs), desktop PCs, portable multimedia players (PMPs), MP3 players, or wearable devices, provide various contents. 
     As the contents provided by the electronic devices are diversified, the electronic devices need to provide increasingly complex functions. 
     The number of components accommodated in the interior of the electronic device has increased as the functions of the electronic device provide the increasingly complex functionality. Additionally, the electronic devices have become gradually slimmer to satisfy purchase needs of consumers. Accordingly, it is difficult to sufficiently secure sufficient space for electronic components to be accommodated in the electronic device. 
     SUMMARY 
     Provided is an electronic device that may optimize an accommodation space within the electronic device. 
     In accordance with an aspect of the disclosure, an electronic device includes: a housing at least partially surrounding a space between a front surface and a rear surface of the electronic device, and including a side structure having a speaker hole formed therein; a speaker configured to emit a sound signal through the speaker hole; a vibration motor structure provided adjacent the speaker, and including a plurality of side surfaces, wherein a motor ventilation hole is formed through a first side surface of the plurality of side surfaces; an enclosure provided in the housing, and surrounding at least a portion of the speaker and at least a portion of the vibration motor structure; a sound absorbing structure provided in the enclosure; and a protection structure provided in the enclosure, and overlapping at least a portion of the motor ventilation hole. 
     The protection structure may be spaced apart from the first side surface by a gap that is smaller than a size of the sound absorbing structure. 
     The protection structure may be spaced apart from the first side surface by a gap of 0.01 mm to 0.3 mm. 
     The enclosure may include: a first enclosure; and a second enclosure facing the first enclosure. The speaker and the vibration motor structure may be provided between the first enclosure and the second enclosure. 
     The protection structure may be integrally formed with the first enclosure, and the protection structure may protrude from the first enclosure toward the second enclosure. 
     The electronic device may further include a seating structure provided on the first enclosure, and at least partially surrounding the plurality of side surfaces. The protection structure may be spaced apart from the seating structure. 
     The protection structure may be one among a plurality of protection structures that are spaced apart from each other by a gap that is smaller than a size of the sound absorbing structure. 
     The protection structure may have a convexo-concave shape that includes a concave area and a convex area, and a width of the concave area may be less than a shortest dimension of the sound absorbing structure. 
     The enclosure may include: a first enclosure; and a second enclosure facing the first enclosure. The speaker and the vibration motor structure may be provided between the first enclosure and the second enclosure. The protection structure may include: a first portion attached to the first enclosure; and a second portion substantially perpendicular to the first portion, facing the motor ventilation hole, and spaced apart from the motor ventilation hole by a gap that is less than a shortest dimension of the sound absorbing structure. 
     The protection structure may further include a slit overlapping the motor ventilation hole, and a width of the slit may be less than the shortest dimension. 
     The electronic device may further include: a first circuit board electrically connected to a speaker provided in the speaker; and a second circuit board connected to a motor provided in the vibration motor structure and the first circuit board. The second circuit board may pass through the motor ventilation hole, and another motor ventilation hole may be formed through a second side surface of the plurality of side surfaces. 
     The protection structure may be integrally formed with the first circuit board, and may extend toward the motor ventilation hole. 
     The protection structure may be provided on the first circuit board within 0.3 mm of the first side surface of the vibration motor structure. The protection structure may include any one or any combination of a sponge material, a 2-dimensional or 3-dimensional mesh material, a rubber material, a stainless steel material, or a plastic material. 
     The electronic device may further include a plurality of adhesives provided between the enclosure and the vibration motor structure, and spaced apart from each other. An auxiliary motor ventilation hole may be formed through a surface of the vibration motor structure which faces the plurality of adhesives. Pipelines between the plurality of adhesives may connect the auxiliary motor ventilation hole, an outer space of the vibration motor structure, and an inner space of the vibration motor structure. 
     Each of the plurality of adhesives may be narrower than the sound absorbing structure. 
     In accordance with an aspect of the disclosure, an electronic device includes: a speaker that includes a speaker; an enclosure surrounding at least a portion of the speaker; a vibration motor structure provided adjacent the speaker in the enclosure, wherein a motor ventilation hole is formed through the vibration motor structure to connect a first resonance space formed between the vibration motor structure and the enclosure, and a second resonance space formed within the vibration motor structure; a sound absorbing structure provided in the enclosure; and a protection structure provided in the enclosure, and facing the motor ventilation hole. 
     The vibration motor structure may include a plurality of side surfaces, the motor ventilation hole may pass through at least any one of the plurality of side surfaces from an inner side to an outer side thereof, and the protection structure may be spaced apart from a side surface of the vibration motor structure, on which the motor ventilation hole is formed, by a gap that is smaller than a size of the sound absorbing structure being interposed therebetween. 
     The enclosure may include a first enclosure and a second enclosure, which face each other, and the protection structure may protrude from the first enclosure toward the second enclosure. 
     The enclosure may include: a first enclosure and a second enclosure, which face each other. The protection structure may be attached to the first enclosure. The protection structure may include any one or any combination of a sponge material, a 2-dimensional or 3-dimensional mesh material, a rubber material, a stainless steel material, or a plastic material. 
     The electronic device may further include: a first circuit board electrically connected to the speaker; and a second circuit board connected to a motor provided in the vibration motor structure and the first circuit board. The protection structure may be integrally formed with the first circuit board or is provided on the first circuit board. 
     The electronic device may further include a seating structure provided in the enclosure, and at least partially surrounding a side surface of any one or any combination of the vibration motor structure and the speaker. The first resonance space may include: a space between any one or any combination of the first circuit board and the second circuit board, and the enclosure; and a space between the seating structure and the enclosure. 
     In accordance with an aspect of the disclosure, an electronic device includes: a speaker provided within an enclosure and including a speaker; and a vibration motor structure provided within the enclosure that includes a first surface, a second surface, and a third surface which extends between the first surface and the second surface. A motor ventilation hole is formed through the third surface to allow air provided in the enclosure to flow in and out of the vibration motor structure. 
     The electronic device may further include a circuit board provided within the motor ventilation hole and electrically connected to a motor provided in the vibration motor structure. 
     The circuit board may be provided on the first surface and may include a plurality of connection terminals. 
     The electronic device may further include a protection structure which protrudes from the first surface. 
     The protection structure may be spaced apart from the third surface along a direction perpendicular to the third surface by a first distance. 
     The first distance may be greater than 0.01 mm and less than 0.3 mm. 
     In accordance with an aspect of the disclosure, a method of an electronic device that includes a speaker and a vibration motor structure is provided. The method includes: inducing air to flow through a motor ventilation hole of the vibration motor structure by controlling a speaker provided in the speaker to vibrate according to an audio signal; and controlling a motor provided in the vibration motor structure according to an alert signal. 
     Provided is an electronic device which may optimize an accommodation space and reduce manufacturing costs as the vibration motor module may be accommodated in an enclosure, in which a speaker module is accommodated. 
     Provided is an electronic device which may improve a performance of the speaker module as a volume of resonance space is enlarged due to the interior space of the vibration motor module. 
     Provided is an electronic device which includes a protection structure to prevent a defect of a vibration motor module due to a sound absorbing member blocking a ventilation hole. 
     Provided is an electronic device which includes a protection structure to prevent deterioration of low-band performance due to a sound absorbing member blocking a ventilation hole. 
     The disclosure may provide additional effects. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspects, features, and advantages of certain embodiments of the present disclosure will be more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which: 
         FIG.  1    illustrates a perspective view illustrating a front surface of an electronic device according to various embodiments; 
         FIG.  2    illustrates a perspective view illustrating a rear surface of an electronic device according to various embodiments; 
         FIG.  3    illustrates an exploded perspective view illustrating an electronic device according to various embodiments; 
         FIG.  4    is a perspective view illustrating an enclosure that accommodates a speaker module and a vibration motor module of an electronic device according to various embodiments; 
         FIG.  5    is an exploded perspective view illustrating an enclosure that includes a speaker module and a vibration motor module of an electronic device according to various embodiments; 
         FIGS.  6 A,  6 B,  6 C and  6 D  are views illustrating a speaker module included in an electronic device according to various embodiments; 
         FIG.  7 A,  7 B and  7 C  are views illustrating a vibration motor module included in an electronic device according to various embodiments; 
         FIG.  8    is a plan view illustrating a speaker module and a vibration motor module seated in a first enclosure of an electronic device according to various embodiments; 
         FIG.  9 A  is a cross-sectional view illustrating a coupling relationship of a first enclosure and a second enclosure, taken along line A-A′ of  FIG.  8   , and  FIG.  9 B  is a cross-sectional view illustrating a coupling relationship of a first enclosure and a second enclosure, taken along line B-B′ of  FIG.  8   ; 
         FIGS.  10 A,  10 B,  10 C,  10 D and  10 E  are views illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments; 
         FIGS.  11 A,  11 B and  11 C  are views illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments; 
         FIG.  12    is a view illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments; 
         FIGS.  13 A and  13 B  are views illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments; 
         FIG.  14    is a view illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments; 
         FIG.  15    is a view illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments; 
         FIGS.  16 A,  16 B,  16 C and  16 D  are views illustrating a protection structure applied to a first motor ventilation hole of an electronic device according to various embodiments; 
         FIGS.  17 A and  17 B  are views illustrating a protection structure applied to a first motor ventilation hole of an electronic device according to various embodiments; 
         FIG.  18    is a view illustrating a protection structure applied to a first motor ventilation hole of an electronic device according to various embodiments; 
         FIGS.  19 A and  19 B  are views illustrating a vibration motor module, in which an auxiliary motor ventilation hole is formed on one surface thereof, in an electronic device according to various embodiments; and 
         FIG.  20    is a graph depicting a speaker module performance measuring result according to presence of at least one protection structure of an electronic device according to various embodiments. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, embodiments will be described with reference to the accompanying drawings. Like reference numerals refer to like elements and a repeated description related thereto will be omitted. As used herein, the terms “1st” or “first” and “2nd” or “second” may use corresponding components regardless of importance or order and are used to distinguish a component from another component without limiting the components. Expressions such as “at least one of” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list. For example, the expression, “at least one of a, b, and c,” should be understood as including only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c. Those of ordinary skill in the art will recognize that modification, equivalent, and/or alternative on the various embodiments described herein may be variously made without departing from the scope and spirit of the disclosure. 
       FIG.  1    is a front perspective view of an electronic device according to an embodiment, and  FIG.  2    is a rear perspective view of an electronic device according to an embodiment 
     Referring to  FIGS.  1  and  2   , an electronic device  101  may include a housing  110  including a first surface (or a front surface)  110 A, a second surface (or a rear surface)  110 B, and a side surface  110 C that encloses a space between the first surface  110 A and the second surface  110 B. 
     In another embodiment, the housing  110  may refer to a structure that forms some of the first surface  110 A, the second surface  110 B, and the side surface  110 C. 
     In one embodiment, the first surface  110 A may be formed by a front surface plate  102  (e.g., a glass plate including various coating layers, or a polymer plate) at least a portion of which is substantially transparent. The second surface  110 B may be formed by a substantially opaque rear surface plate  111 . The rear surface plate  111  may be formed by, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the above materials. The side surface  110 C may be formed by a side surface bezel structure (or a “frame structure”)  118  that is coupled to the front surface plate  102  and the rear surface plate  111 , and may contain metal and/or polymer. 
     In another embodiment, the rear surface plate  111  and the side surface bezel structure  118  may be integrally formed and may contain the same material (e.g., a metal material such as aluminum). 
     As illustrated, the front surface plate  102  may include two first regions  110 D bent from a region of the first surface  110 A in a direction of the rear surface plate  111  to seamlessly extend. The first regions  110 D may be located at ends of long edges of the front surface plate  102 , respectively. 
     As illustrated, the rear surface plate  111  may include two second regions  110 E bent from a region of the second surface  110 B in a direction of the front surface plate  102  to seamlessly extend. The second regions  110 E may be located at ends of long edges of the rear surface plate  111 , respectively. 
     In another embodiment, the front surface plate  102  (or the rear surface plate  111 ) may include only one of the first regions  110 D (or of the second regions  110 E). In addition, in another embodiment, the front surface plate  102  (or the rear surface plate  111 ) may not include some of the first regions  110 D (or of the second regions  110 E). 
     In one embodiment, when viewed from the side surface of the electronic device  101 , the side surface bezel structure  118  may have a first thickness (or width) in a side surface direction (e.g., a short side) in which the first regions  110 D or the second regions  110 E as described above are not included, and may have a second thickness smaller than the first thickness in a side surface direction (e.g., a long side) in which the first regions  110 D or the second regions  110 E are included. 
     In one embodiment, the electronic device  101  may include at least one of a display  106 , an audio module (e.g., speaker module  520  in  FIG.  5   ), a sensor module, camera modules  105 ,  112 , and  113 , a key input device  117 , a light emitting device, and a connector hole  108 . In another embodiment, the electronic device  101  may omit at least one (e.g., the key input device  117  or the light emitting device) of the components or additionally include other components. 
     In one embodiment, the display  106  may be exposed through a substantial portion of the front surface plate  102 . For example, at least a portion of the display  106  may be exposed through the front surface plate  102  including the first surface  110 A and the first regions  110 D of the side surface  110 C. 
     In one embodiment, an edge of the display  106  may be formed to have a shape that is substantially the same as a shape of an adjacent outer periphery of the front surface plate  102 . In another embodiment, a distance between an outer periphery of the display  106  and the outer periphery of the front surface plate  102  may be substantially constant to expand an area to which the display  106  is exposed. 
     In one embodiment, a surface (or the front surface plate  102 ) of the housing  110  may include a screen display region defined as the display  106  is visually exposed. For example, the screen display region may include the first surface  110 A and the first regions  110 D of the side surface. 
     In another embodiment, the screen display region  110 A and  110 D may include a sensing region for acquiring biometric information of a user. In this connection, “the screen display region  110 A and  110 D includes the sensing region” may be understood to mean that at least a portion of the sensing region may overlap the screen display region  110 A and  110 D. For example, the sensing region may mean a region that may display visual information by the display  106  like other regions of the screen display region  110 A and  110 D, and additionally acquire the biometric information (e.g., a fingerprint) of the user. 
     In one embodiment, the screen display region  110 A and  110 D of the display  106  may include a region in which the first camera module  105  (e.g., a punch hole camera) may be visually exposed. For example, at least a portion of an edge of the region in which the first camera module  105  is exposed may be surrounded by the screen display region  110 A and  110 D. In one embodiment, the first camera module  105  may include a plurality of camera modules (e.g., the camera module  580  in  FIG.  5   ). 
     In another embodiment, the display  106  may be coupled to or disposed adjacent to a touch sensing circuit, a pressure sensor capable of measuring an intensity (a pressure) of a touch, and/or a digitizer that detects a magnetic field-type stylus pen. 
     In one embodiment, the audio module may include the microphone holes  103  and  104  and the speaker hole  107 . 
     In one embodiment, the microphone holes  103  and  104  may include the microphone hole  103  defined in a region of the side surface  110 C and the microphone hole  104  defined in a region of the second surface  110 B. In the microphone holes  103  and  104 , a microphone for acquiring an external sound may be disposed. The microphone may include a plurality of microphones to sense a direction of the sound. In one embodiment, the microphone hole  104  defined in the region of the second surface  110 B may be disposed adjacent to the camera modules  105 ,  112 , and  113 . For example, the microphone hole  104  may acquire the sound when the camera modules  105 ,  112 , and  113  are executed, or acquire the sound when another function is executed. 
     In one embodiment, the speaker hole  107  may include the external speaker hole  107  and a receiver hole. The external speaker hole  107  may be defined in a portion of the side surface  110 C of the electronic device  101 . In another embodiment, the external speaker hole  107  may be implemented as one hole with the microphone hole  103 . The receiver hole may be defined in another portion of the side surface  110 C. For example, the receiver hole may be defined in another portion (e.g., a portion on a +Y-axis side) of the side surface  110 C facing away from the portion (e.g., a portion on a −Y-axis side) of the side surface  110 C in which the external speaker hole  107  is defined. 
     In one embodiment, the electronic device  101  may include a speaker in communication with the speaker hole  107 . In another embodiment, the speaker may include a piezo speaker in which the speaker hole  107  is omitted. 
     In one embodiment, the sensor module may generate an electrical signal or a data value corresponding to an internal operating state or an external environmental state of the electronic device  101 . For example, the sensor module may include at least one of a proximity sensor, a HRM sensor, a fingerprint sensor, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, and an illuminance sensor. 
     In one embodiment, the camera modules  105 ,  112 , and  113  may include the first camera module  105  (e.g., the punch hole camera) exposed from the first surface  110 A of the electronic device  101 , and the second camera module  112  and/or the flash  113  exposed through the second surface  110 B. 
     In one embodiment, the first camera module  105  may be exposed through a portion of the screen display region  110 A and  110 D of the display  106 . For example, the first camera module  105  may be exposed from a region of the screen display region  110 A and  110 D through an opening defined in a portion of the display  106 . 
     In one embodiment, the second camera module  112  may include a plurality of camera modules (e.g., a dual camera, a triple camera, or a quad camera). However, the second camera module  112  may not be necessarily limited to including the plurality of camera modules, and may include one camera module. 
     Each of the first camera module  105  and the second camera module  112  may include one or a plurality of lenses, an image sensor, and/or an image signal processor. The flash  113  may include, for example, a light emitting diode or a xenon lamp. In another embodiment, two or more lenses (an infrared camera, and wide-angle and telephoto lenses) and image sensors may be disposed on one surface of the electronic device  101 . 
     In one embodiment, the key input device  117  may be disposed on the side surface  110 C (e.g., in the first regions  110 D and/or the second regions  110 E) of the housing  110 . In another embodiment, the electronic device  101  may not include a portion or an entirety of the key input device  117 , and the key input device  117  that is not included may be implemented in another form, like a soft key, on the display  106 . In another embodiment, the key input device may include a sensor module that forms the sensing region included in the screen display region  110 A and  110 D. 
     In one embodiment, the connector hole  108  may be configured to receive a connector. The connector hole  108  may be disposed on the side surface  110 C of the housing  110 . For example, the connector hole  108  may be disposed on the side surface  110 C to be adjacent to at least a portion of the audio module (e.g., the microphone hole  103  and the speaker hole  107 ). In another embodiment, the electronic device  101  may include the first connector hole  108  capable of accommodating a connector (e.g., a universal serial bus (USB) connector) for transmitting/receiving power and/or data with an external device and/or a second connector hole capable of accommodating a connector (e.g., an earphone jack) for transmitting/receiving an audio signal with the external device. 
     In one embodiment, the electronic device  101  may include the light emitting device. For example, the light emitting device may be disposed on the first surface  110 A of the housing  110 . The light emitting device may provide state information of the electronic device  101  in a form of light. In another embodiment, the light emitting device may provide a light source that is in association with an operation of the first camera module  105 . For example, the light emitting device may include a light emitting diode (LED), an IR LED, and/or a xenon lamp. 
     In an embodiment, at least a portion of the side surface bezel structure  118  may function as an antenna electrically connected to the communication module. According to an embodiment, the side surface bezel structure  118  may include a conductive part  202  formed of a metal material and a division part  201  formed of an insulating nonmetal material (e.g., a polymer). According to an embodiment, at least a portion of the conductive part  202  may be a radiator, for example, an antenna that is electrically connected to the communication module and is configured to radiate a radio frequency (RF) signal output from the communication module. 
       FIG.  3    is an exploded perspective view of an electronic device according to an embodiment. 
     Referring to  FIG.  3   , the electronic device  101  may include a front surface plate  120  (e.g., the front surface plate  102  in  FIG.  1   ), a display  130  (e.g., the display  106  in  FIG.  1   ), a bracket  140 , a battery  170 , a printed circuit board (PCB)  150 , a radio frequency printed circuit board (RFPCB)  100 , a support member  160  (e.g., a rear casing), and a rear surface plate  180  (e.g., the rear surface plate  111  in  FIG.  2   ). 
     In another embodiment, the electronic device  101  may omit at least one (e.g., the support member  160 ) of the components or additionally include other components. At least one of the components of the electronic device  101  may be the same as or similar to at least one of the components of the electronic device  101  in  FIGS.  1  and  2   . Hereinafter, redundant descriptions will be omitted. 
     In one embodiment, at least some of the front surface plate  120 , the rear surface plate  180 , and the bracket  140  (e.g., a frame structure  141 ) may form a housing (e.g., the housing  110  in  FIGS.  1  and  2   ). 
     In one embodiment, the bracket  140  may include the frame structure  141  that forms a surface of the electronic device  101  (e.g., a portion of the side surface  110 C in  FIG.  1   ) and a plate structure  142  that extends inward from the frame structure  141 . 
     The plate structure  142  may be located inside the electronic device  101 , connected to the frame structure  141 , or integrally formed with the frame structure  141 . The plate structure  142  may be made of, for example, a metallic material and/or a non-metallic (e.g., polymer) material. The display  130  may be coupled to one surface of the plate structure  142  and the PCB  150  may be coupled to the other surface of the plate structure  142 . A processor, a memory, and/or an interface may be mounted on the PCB  150 . The processor may include, for example, one or more of a central processing unit, an application processor, a graphics processing device, an image signal processor, a sensor hub processor, and a communication processor. 
     The memory may include, for example, a volatile memory or a non-volatile memory. 
     The interface may include, for example, a high definition multimedia interface (HDMI), a USB interface, a Secure Digital (SD) card interface, and/or an audio interface. The interface may, for example, electrically or physically connect the electronic device  101  to the external device, and may include a USB connector, an SD card connector, a MultiMediaCard (MMC) connector, or an audio connector. 
     In one embodiment, the battery  170  may be configured to supply power to at least one of the components of the electronic device  101 . For example, the battery  170  may include a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell. In one embodiment, at least a portion of the battery  170  may be disposed substantially coplanar with the PCB  150 . In one embodiment, the battery  170  may be integrally disposed inside the electronic device  101  or may be disposed detachably from the electronic device  101 . 
     In one embodiment, the first camera module  105  may be disposed on the plate structure  142  of the bracket  140  such that the lens thereof is exposed from a region of the front surface plate  120  (e.g., the first surface  110 A in  FIG.  1   ) of the electronic device  101 . 
     In one embodiment, the first camera module  105  may be disposed such that an optical axis of the lens thereof is at least partially aligned with a hole or recess  137  defined in the display  130 . For example, the region from which the lens is exposed may be formed on the front surface plate  120 . For example, the first camera module  105  may include the punch hole camera having at least a portion disposed inside the hole or recess  137  defined in a rear surface of the display  130 . 
     In one embodiment, the second camera module  112  may be disposed on the PCB  150  such that the lens thereof is exposed from a camera region  184  of the rear surface plate  180  (e.g., the second surface  110 B in  FIG.  2   ) of the electronic device  101 . 
     In one embodiment, the camera region  184  may be formed on a surface (e.g., the second surface  110 B in  FIG.  2   ) of the rear surface plate  180 . In one embodiment, the camera region  184  may be formed to be at least partially transparent such that external light is incident to the lens of the second camera module  112 . In one embodiment, at least a portion of the camera region  184  may protrude from the surface of the rear surface plate  180  with a predetermined height. However, the disclosure may not be necessarily limited thereto, and the camera region  184  may be substantially coplanar with the surface of the rear surface plate  180 . 
     According to an embodiment, the electronic device  101  may include an integral assembly  300  including a speaker module (or speaker) and a vibration motor module disposed in an inner space thereof. A sound signal emitted from the speaker module may be emitted to an outside of the electronic device through a path for delivery of a sound, which is provided in an interior of the electronic device  101 . The vibration motor module may generate vibrations in an operation process of the electronic device  101 . 
     The integral assembly  300  may be disposed in a space between the support member  160 , and the front surface plate  120  or the rear surface plate  180 . 
     The electronic device  101  according to various embodiments may include an electronic device, such as a bar type, a foldable type, a rollable type, a sliding type, a wearable type, a tablet PC, and/or a notebook PC. The electronic device  101  according to various embodiments of the disclosure is not limited to the above-described example, and may include other various electronic devices. 
       FIG.  4    is a perspective view illustrating an enclosure that accommodates a speaker module and a vibration motor module of an electronic device according to various embodiments.  FIG.  5    is an exploded perspective view illustrating an enclosure that includes a speaker module and a vibration motor module of an electronic device according to various embodiments. 
     Referring to  FIGS.  4  and  5   , an electronic device  400  according to various embodiments may include a speaker module  520 , a vibration motor module  510 , and an enclosure  401 . 
     The speaker module  520  and the vibration motor module  510  may be formed in one assembly. The speaker module  520  and the vibration motor module  510  may be electrically connected to each other through a first circuit board  560 . For example, the first circuit board  560  may be a flexible printed circuit board (FPCB). 
     According to an embodiment, the speaker module  520  and the vibration motor module  510  may be accommodated in an interior of the enclosure  401 . The enclosure  401  may include a first enclosure  410  and a second enclosure  420 . Any one of the first enclosure  410  and the second enclosure  420  may face the front plate (e.g., the front surface plate  120  of  FIG.  3   ). The remaining one of the first enclosure  410  and the second enclosure  420  may face the rear plate (e.g., the rear surface plate  180  of  FIG.  3   ). For example, the first enclosure  410  may be disposed in a direction (e.g., the Z axis direction) that faces the front plate, and the second enclosure  420  may be disposed in a direction (e.g., the −Z axis direction) that faces the rear plate. 
     At least any one of the first enclosure  410  and the second enclosure  420  may be formed of a material, such as a material for injection-molding, stainless steel, or rubber. 
     According to an embodiment, a space for accommodating the speaker module  520  and the vibration motor module  510  may be formed in the first enclosure  410 . The first enclosure  410  may include a seating structure  411  to prevent deviation of the speaker module  520  and the vibration motor module  510 . The seating structure  411  may be formed to surround at least a partial area of a side surface of at least any one of the speaker module  520  and the vibration motor module  510 . The second enclosure  420  may be coupled to the first enclosure  410 , in which the speaker module  520  and the vibration motor module  510  are accommodated. Because the first enclosure  410  and the second enclosure  420  are coupled to each other, a resonance space surrounded by the first enclosure  410  and the second enclosure  420  may be formed. 
     According to an embodiment, a sound emission hole  430  connected to the speaker hole (e.g., the speaker hole  107  of  FIGS.  1  and  2   ) may be formed on at least one surface of the first enclosure  410 . The sound emission hole  430  may guide the sound signal such that the sound signal generated by the speaker module  520  is emitted to an outside. The sound signal generated by the speaker module  520  may be delivered through air included in the resonance space, and the delivered sound signal may be output to an outside through the sound emission hole  430  and the speaker hole. 
     According to an embodiment, a space for accommodating a sound absorbing member  540  may be formed in at least any one of the first enclosure  410  and the second enclosure  420 . The sound absorbing member  540  may be formed of an air suction material  541  in a form of grains. For example, the grains may be larger than 0.01 mm to 0.3 mm. For example, the sound absorbing member  540  may be formed by mixing an air adsorbing material of at least one of a diatomite-based element, pearlite, or a silicon dioxide-based element, or a zeolite-based element, and a binder. The sound absorbing member  540  may alleviate compression of air in the resonance space due to vibrations of the vibration plate disposed in the speaker module  520 . The sound absorbing member  540  may absorb air in an interior of the enclosure  401  or discharge the air into an interior of the enclosure  401 . According to an embodiment, when a pressure in the interior of the enclosure  401  is increased by the vibrations of the vibration plate disposed in the speaker module  520 , the sound absorbing member  540  may absorb the air into the interior of the enclosure  401 . When the pressure in the interior of the enclosure  401  is decreased by the vibrations of the vibration plate disposed in the speaker module  520 , the air in the interior of the enclosure  401  may be discharged. Due to the sound absorbing member  540 , limitations in a magnitude of the vibration plate in the enclosure  401  may be alleviated. Because the same effect as enlargement of a volume (that is, a resonance space) in the enclosure  401  may be obtained by the sound absorbing member  540 , a low-band reproduction ability of the speaker module  520  may be enhanced. 
       FIGS.  6 A,  6 B,  6 C and  6 D  are views illustrating the speaker module included in the electronic device according to various embodiments. 
     Referring to  FIGS.  6 A,  6 B,  6 C and  6 D , the speaker module  520  included in the electronic device according to various embodiments may include speaker components and at least one speaker ventilation hole  620 . 
     The speaker components may include at least one magnet disposed in an inner space of a speaker housing  630 , a coil member, and a vibration plate  610 . 
     The vibration plate  610  may be formed to cover one surface (e.g., a surface that faces the +Z axis) of the speaker housing  630 . The vibration plate  610  may include a first vibration plate  611  having a plate shape, and a second vibration plate  612  that surrounds the first vibration plate  611 . At least a portion of the second vibration plate  612  may have a curved surface. For example, the first vibration plate  611  and the second vibration plate  612  may have different thicknesses as illustrated in  FIG.  6 A , or may be formed by joining different materials as illustrated in  FIG.  6 C . 
     The vibration plate  610  may vibrate according to movement of at least one coil member disposed in the inner space of the speaker housing  630 . The coil member may be disposed at a location, at which it is influenced by a magnetic force of the at least one magnet disposed in the inner space of the speaker housing  630 . 
     The speaker ventilation hole  620  may be used as a path for air flow between an inside and an outside of the speaker module  520 . The air outside the speaker module  520  may be introduced into the interior of the speaker module  520  through the speaker ventilation hole  620 , and the air in the interior of the speaker module  520  may be discharged to the outside of the speaker module  520  through the speaker ventilation hole  620 . A change of the pressure, which is generated when the vibration plate  610  is moved upwards and downwards may be alleviated by the speaker ventilation hole  620 . 
     The speaker ventilation hole  620  may be disposed on an opposite surface (a surface that faces the −Z axis) of the speaker housing  630  as illustrated in  FIG.  6 B , or may be disposed on a side surface of the speaker housing  630  as illustrated in  FIG.  6 D . 
     According to an embodiment, the speaker module  520  may include a speaker impact absorbing member  640  disposed on the opposite surface of the speaker housing  630 . The speaker impact absorbing member  640  may be disposed between the second enclosure (e.g., the second enclosure  420  of  FIG.  5   ) and the opposite surface of the speaker module  520 . The speaker impact absorbing member  640  may prevent interference between the speaker module  520 , which is moved due to the vibrations of the vibration plate  610 , and the second enclosure. The speaker impact absorbing member  640  may be formed of an elastic material that may absorb an impact. The speaker impact absorbing member  640  may have a polygonal shape as illustrated in  FIGS.  6 B and  6 D . The speaker impact absorbing member  640  is not limited to the shapes illustrated in  FIGS.  6 B and  6 D , and may be implemented in various shapes, which may be interposed between the speaker module  520  and the second enclosure. 
       FIGS.  7 A,  7 B and  7 C  are views illustrating the vibration motor module included in the electronic device according to various embodiments. 
     Referring to  FIGS.  7 A,  7 B and  7 C , the vibration motor module  510  included in the electronic device according to various embodiments may generate vibrations or a haptic effect by converting an electric signal to mechanical vibrations. The vibration motor module  510  may include a motor housing  500 , and vibration motor components disposed in the interior of the motor housing  500 . The vibration motor components, for example, may include a motor magnet and a motor coil. The vibration motor module  510  may generate vibrations by using a force that is applied when a current flows according to the Fleming&#39;s left-handed law through an electromagnetic field between the motor coil and the motor magnet. Because the motor housing  500  is formed to surround the vibration motor components, the motor housing  500  may define an inner space that surrounds peripheries of the vibration motor components. 
     The motor housing  500  of the vibration motor module  510  according to an embodiment, as illustrated in  FIG.  7 A , may have a polyhedral shape. For example, the motor housing  500  may have a substantially hexahedral shape. The motor housing  500  may include a first surface  501 , a second surface  502 , a first side surface  511 , a second side surface  512 , a third side surface  513 , and a fourth side surface  514 . For example, the first side surface  511  may be disposed to face the third side surface  513  in a first direction (e.g., the +X axis direction or the +Y axis direction of  FIG.  1   ). The second side surface  512  may be disposed to face the fourth side surface  514  in a second direction that is perpendicular to the first direction. The first surface  501  may be disposed to face the first enclosure (e.g., the first enclosure  410  of  FIGS.  4  and  5   ), and the second surface  502  may be disposed to face the second enclosure (e.g., the second enclosure  420  of  FIGS.  4  and  5   ). At least any one of the first side surface  511 , the second side surface  512 , the third side surface  513 , and the fourth side surface  514  may extend from any one of the first surface  501  and the second surface  502  and may be integrally formed with the any one of the first surface  501  and the second surface  502 . For example, the first side surface  511 , the second side surface  512 , the third side surface  513 , and the fourth side surface  514  may extend from the second surface  502  to the first surface  501  in a direction that is substantially perpendicular to the first surface  501  and be formed. The first side surface  511 , the second side surface  512 , the third side surface  513 , and the fourth side surface  514  may be coupled to the first surface  501  through structural coupling (e.g., press-fitting), by using a mechanism such as a bolt or a nut, or by using a structure such as an adhesive or a tape. At least one motor ventilation hole  700  may be formed on a side surface of at least one of the first side surface  511 , the second side surface  512 , the third side surface  513 , and the fourth side surface  514 . The motor ventilation hole  700  may be formed to pass through at least any one of the first side surface  511 , the second side surface  512 , the third side surface  513 , and the fourth side surface  514  from an inner surface to an outer surface thereof. 
     The motor housing  500  of the vibration motor module  510  according to another embodiment, as illustrated in  FIGS.  7 B and  7 C , may have a cylindrical shape. The motor housing  500  may include the first surface  501 , the second surface  502 , and a side surface  515 . The side surface  515  may extend from the second surface  502  and may be integrally formed with the second surface  502 . The side surface  515  may be coupled to the first surface  501  through structural coupling (e.g., press-fitting), by using a mechanism such as a bolt or a nut, or by using a structure such as an adhesive or a tape. At least one motor ventilation hole  700  may be formed on the first surface  501 . The motor ventilation hole  700  may be formed to pass through the first surface  501  from an inner side to an outer side thereof. In addition, the motor ventilation hole  700  illustrated in  FIGS.  7 B and  7 C  also may be formed on the side surface  515  as well as on the first surface  501 . 
     According to various embodiments, the motor ventilation hole  700  may have a circular shape, an elliptical shape, or a polygonal shape. The motor ventilation hole  700  may connected an inner space of the vibration motor module  510  and an outer space of the vibration motor module  510 . Because the air in the outer space of the vibration motor module  510  may be introduced into the inner space of the vibration motor module  510  through the motor ventilation hole  700 , a difference of the pressures in the outer space of the vibration motor module  510  and the inner space of the vibration motor module  510  may be eliminated. Accordingly, because the change in the pressure in the interior of the vibration motor module  510  may be alleviated, degradation of a performance of the vibration motor module  510  may be prevented. 
     According to various embodiments, a second circuit board  570  for transmitting a driving signal to the vibration motor module  510  may be accommodated in at least any one of the motor ventilation hole  700 . The motor ventilation hole  700 , as illustrated in  FIG.  7 A , may include a first motor ventilation hole  710  and a second motor ventilation hole  720 . The second circuit board  570  may be inserted into the first motor ventilation hole  710 . The second circuit board  570  may not be inserted into the second motor ventilation hole  720 . The first motor ventilation hole  710  and the second motor ventilation hole  720  may be formed on different side surfaces or the same side surface of the motor housing  500 . For example, the first motor ventilation hole  710  may be formed on the second side surface  512  of the motor housing  500 , and the second motor ventilation hole  720  may be formed on the fourth side surface  514  that faces the second side surface  512 . As another example, the first motor ventilation hole  710  and the second motor ventilation hole  720  may be formed on the same side surface in a multi-stepped structure that is connected upwards and downwards. 
     According to various embodiments, the second circuit board  570  may include a plurality of signal terminals  571  and  572 . For example, the second circuit board  570  may include the first signal terminal  571 , to which a positive polarity driving signal is supplied, and the second signal terminal  572 , to which a negative polarity driving signal is supplied. The first signal terminal  571  and the second signal terminal  572  may be electrically connected to the first circuit board (e.g., the first circuit board  560  of  FIGS.  4  and  5   ). 
     According to various embodiments, the second circuit board  570  may be disposed to pass via the first motor ventilation hole  710 . A partial area of the second circuit board  570  may be inserted into the interior of the motor housing  500 . The remaining area of the second circuit board  570  may be disposed outside the motor housing  500 . In this regard, a length of the first motor ventilation hole  710  may be larger than a width of the second circuit board  570  accommodated in the first motor ventilation hole  710 , and a width of the first motor ventilation hole  710  may be larger than a thickness of the second circuit board  570 . 
     According to various embodiments, the vibration motor module  510  may include a motor impact absorbing member  740  disposed on the opposite surface (e.g., the −Z axis direction) of the motor housing  500 . The motor impact absorbing member  740  may be disposed between the second enclosure (e.g., the second enclosure  420  of  FIG.  5   ) and the opposite surface of the vibration motor module  510 . The motor impact absorbing member  740  may prevent interference between the vibration motor module  510 , which is moved due to the vibrations of the vibration motor module  510 , and the second enclosure. The motor impact absorbing member  740  may be formed of an elastic material that may absorb an impact. The motor impact absorbing member  740 , as illustrated in  FIGS.  7 A and  7 B , may have a polygonal shape, a circular shape, or an elliptical shape according to a shape of the opposite surface of the motor housing  500 . The motor impact absorbing member  740  is not limited to the shapes illustrated in  FIGS.  7 A and  7 B , and may be implemented in various shapes, which may be interposed between the vibration motor module  510  and the second enclosure. 
       FIG.  8    is a plan view illustrating a speaker module and a vibration motor module seated in a first enclosure of an electronic device according to various embodiments.  FIG.  9 A  is a cross-sectional view illustrating a coupling relationship between the first enclosure and the second enclosure, taken along line A-A′ of  FIG.  8   .  FIG.  9 B  is a cross-sectional view illustrating a coupling relationship between the first enclosure and the second enclosure, taken along line B-B′ of  FIG.  8   . In  FIGS.  8  to  9 B , configurations that are the same as or similar to those of  FIGS.  4  to  7    are provided with the same reference numerals, and a description thereof will not be repeated. 
     Referring to  FIGS.  8 ,  9 A and  9 B , the vibration motor module  510  disposed in the enclosure  401  of the electronic device according to an embodiment may include the at least one motor ventilation hole  700 . An outer space  902  of the vibration motor module  510  disposed in the interior of the enclosure  401  and an inner space  901  of the vibration motor module  510  may be connected to each other through the at least one motor ventilation hole  700 . The sound signal generated by the speaker module  520  may be output to an outside through the sound emission hole  430  connected to the outer space (or the first resonance space)  902 . For example, the outer space  902  may include a space between at least one of the first circuit board  560  and the second circuit board  570  disposed in the enclosure  401 , and the enclosure  401 . The outer space  902  may include a space between the seating structure (e.g., the seating structure  411  of  FIG.  5   ) and the enclosure  401 . Furthermore, the sound signal generated by the speaker module  520  may be introduced from the outer space  902  of the vibration motor module  510  into the inner space  901  of the vibration motor module  510 , through the at least one motor ventilation hole  700 . The sound signal introduced into the inner space (or the second resonance space)  901  of the vibration motor module  510  may be delivered through the air contained in the inner space  901 , and the delivered sound signal may be output to the outside through the motor ventilation hole  700 , the sound emission hole  430 , and the speaker hole (e.g., the speaker hole  107  of  FIGS.  1  and  2   ). 
     In this way, the inner space  901  of the vibration motor module  510  connected to the outer space  902  of the vibration motor module  510  through the at least one motor ventilation hole  700  may be used as the resonance space. Accordingly, because the plurality of resonance spaces  901  and  902  are formed in the enclosure  401  of the limited volume, the total volume of the resonance space may be substantially enlarged. Thus, the performance of the speaker module may be improved. 
     According to various embodiments, a protection structure  921  may be disposed around the at least one motor ventilation hole  700 . The protection structure  921  may overlap the at least one motor ventilation hole  700 . The protection structure  921  may be spaced apart from the side surface  514 , on which the motor ventilation hole  700  is formed, while a gap that is smaller than a size of the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ) or the air suction material (e.g., the air suction material  541  of  FIG.  5   ) or may contact the side surface  514 , on which the motor ventilation hole  700 . As an example, when the protection structure  921  is formed of a material with no ventilation property, it may be disposed to be spaced apart from the side surface  514 , on which the motor ventilation hole  700  is formed. As another example, when the protection structure  921  is formed of a material with a ventilation property, the protection structure  921  may be disposed to contact or be spaced apart from the side surface  514 , on which the motor ventilation hole  700  is formed. The protection structure  921  may block the sound absorbing member and the air suction material from passing through the motor ventilation hole  700 . Accordingly, a defect caused as the motor ventilation hole  700  is blocked by the sound absorbing member may be prevented, and the sound absorbing member may be prevented from being introduced into the second resonance space, that is the inner space  901  of the motor housing  500 , through the motor ventilation hole  700 . 
     According to various embodiments, an adhesive member  910  may be disposed between the first enclosure  410  and the first surface  501  of the motor housing  500 . The adhesive member  910  may be an adhesive tape, poron, or a bonding adhesive. 
       FIGS.  10 A,  10 B,  10 C,  10 D and  10 E  are views illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments.  FIG.  10 B  is a cross-sectional view illustrating a coupling relationship between the first enclosure and the second enclosure, taken along line C-C′ of  FIG.  10 A .  FIG.  10 C  is a cross-sectional view illustrating a coupling relationship between the first enclosure and the second enclosure, taken along line D-D′ of  FIG.  10 A .  FIG.  10 E  is a cross-sectional view illustrating a coupling relationship between the first enclosure and the second enclosure, taken along line E-E′ of  FIG.  10 D . In  FIGS.  10 A,  10 B,  10 C,  10 D and  10 E , configurations that are the same as or similar to those of  FIGS.  4  to  9 B  are provided with the same reference numerals, and a repeated description will not be provided. 
     Referring to  FIGS.  10 A,  10 B,  10 C,  10 D and  10 E , a protection structure  1021  may be integrally formed with at least any one of the first enclosure  410  and the second enclosure  420 . The protection structure  1021  may be integrally formed with any one of the first enclosure  410  and the second enclosure  420 , and may protrude toward the remaining one of the first enclosure  410  and the second enclosure  420 . For example, the protection structure  1021  may be integrally formed with the first enclosure  410 , and may protrude toward the second enclosure  420 . 
     The protection structure  1021  may be formed to face the second motor ventilation hole  720  around the second motor ventilation hole  720 . The protection structure  1021  may be disposed to fully overlap the second motor ventilation hole  720 . The protection structure  1021  may be disposed to be spaced apart from the side surface of the motor housing  500  including the second motor ventilation hole  720 . The protection structure  1021  may be a part of the seating structure  411 , and may be formed as one structure with the seating structure  411  or may be formed to be separated and spaced apart from the seating structure  411 . 
     The seating structure  411  may be formed to overlap at least a portion of the side surface of the motor housing  500 , except for the second motor ventilation hole  720 . The seating structure  411  and the protection structure  1021  may be formed parallel to the side surface  514  of the motor housing  500  while being spaced apart from the side surface  514  of the motor housing  500 . The protection structure  1021  may have a height that is the same as or different from that of the seating structure  411 . A gap “g” between the protection structure  1021  and the side surface  514  of the motor housing  500  may be the same as or different from a gap “g” between the seating structure  411  and the side surface  514  of the motor housing  500 . As an example, the protection structure  1021  may be disposed to be closer to or farther from the side surface of the motor housing  500  than the seating structure  411 . 
     The protection structure  1021  may be disposed to be spaced apart from the side surface  514  of the motor housing  500  having the motor ventilation hole  700 , while the gap “g” that is smaller than the size of the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ) is interposed therebetween. For example, the protection structure  1021  may be spaced apart from the side surface  514  of the motor housing  500  having the second motor ventilation hole  720 , and the gap “g” of 0.01 mm to 0.3 mm may be interposed therebetween. Because the sound absorbing member cannot pass through the gap “g” between the side surface  514  of the motor housing  500  and the protection structure  1021 , the sound absorbing member cannot pass through the second motor ventilation hole  720 . Even when the sound absorbing member is broken, the broken sound absorbing member cannot pass through the second motor ventilation hole  720 . Accordingly, a defect caused as the second motor ventilation hole  720  is blocked by the sound absorbing member may be prevented, and the sound absorbing member may be prevented from being introduced into the second resonance space that is the inner space  901  of the motor housing  500  through the second motor ventilation hole  720 . 
     According to various embodiments, as illustrated in  FIGS.  10 D and  10 E , a fixing member  1030  may be disposed between at least any one of the protection structure  1021  and the seating structure  411 , and the motor housing  500 . For example, the fixing member  1030  may be disposed between the one surface of the protection structure  1021  and the side surface  514  of the motor housing  500 . The fixing member  1030  may be formed of a bonding adhesive, the sound absorbing member, sponge, or a tape. Due to the fixing member  1030 , the air may be introduced and discharged in one surface direction through opposite sides of the fixing member  1030  to be ventilated. 
       FIGS.  11 A,  11 B and  11 C  are views illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments. In  FIGS.  11 A,  11 B  and to  11 C, configurations that are the same as or similar to those of  FIGS.  4  to  9 B  are provided with the same reference numerals, and a repeated description will not be provided. 
     Referring to  FIGS.  11 A,  11 B and  11 C , at least one protection structure  1121  disposed on the first enclosure  410  may be formed to overlap a portion of the at least one ventilation hole  720 . The protection structure  1121  may be formed of the same material as that of the seating structure  411  that provides a seating space of the vibration motor module  510 . The seating structure  411  and the protection structure  1121  may be integrally formed with the first enclosure  410 . The protection structure  1121  may be disposed to be spaced apart from the side surface  514  of the motor housing  500 , in which the second motor ventilation hole  720  is formed, while a specific gap being interposed therebetween. The specific gap “g” may be smaller than the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ) or the air suction material (e.g., the air suction material  541  of  FIG.  5   ). 
     For example, one protection structure  1121 , as illustrated in  FIG.  11 A , may be disposed between the seating structures  411 . The protection structure  1121  may be disposed to be spaced apart from the seating structure  411  by a first spacing distance d 1  that is smaller than a size of the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ) or the air suction material (e.g., the air suction material  541  of  FIG.  5   ). For example, the protection structure  1121  may be spaced apart from the seating structure  411  while a spacing space  1130  having the first spacing distance d 1  of 0.01 mm to 0.3 mm being interposed therebetween. 
     For example, a plurality of protection structure  1121 , as illustrated in  FIG.  11 B , may be disposed between the seating structures  411 . The protection structure  1121  may be spaced apart from the seating structure  411  by the first spacing distance. The plurality of protection structures  1121  may be disposed to be spaced apart from each other by a second spacing distance d 2 . The second spacing distance d 2  may be the same as the first spacing distance d 1  or different from the first spacing distance d 1 . The first spacing distance d 1  and the second spacing distance d 2  may be smaller than the size of the sound absorbing member. For example, the plurality of protection structures  1121  may be disposed to be spaced apart from each other by the second spacing distance d 2  of 0.01 mm to 0.3 mm. 
     As another example, the protection structure  1121 , as illustrated in  FIG.  11 C , may have a convexo-concave shape. The protection structure  1121  may include concave areas  1122  and convex areas  1123 . The second motor ventilation hole  720  may not overlap the concave areas  1122 , and may overlap the remaining areas of the protection structure  1121 , except for the concave areas  1122 . The second motor ventilation hole  720  may be disposed to face the remaining areas of the protection structure  1121 , except for the concave areas  1122 . A width of the concave area  1122  corresponding to a space between the convex areas  1123 , and a length of the concave area  1122  may be smaller than a size of the sound absorbing member. For example, the width of the concave area  1122 , and the length of the concave area  1122  may be 0.01 mm to 0.3 mm. 
     In the electronic device having the protection structure  1121  illustrated in  FIGS.  11 A,  11 B and  11 C , the sound absorbing member cannot pass between the side surface  514  of the motor housing  500  and the protection structure  1121 . Furthermore, the sound absorbing member cannot pass between the protection structure  1121  and the seating structure  411 , and also cannot pass between the protection structures  1121 . Due to the protection structure  1121 , the sound absorbing member cannot pass through the second motor ventilation hole  720 . Even when the sound absorbing member is broken, the broken sound absorbing member cannot pass through the second motor ventilation hole  720 . Accordingly, a defect caused as the second motor ventilation hole  720  is blocked by the sound absorbing member may be prevented, and the sound absorbing member may be prevented from being introduced into the inner space of the motor housing  500  through the second motor ventilation hole  720 . 
       FIG.  12    is a view illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments. In  FIG.  12   , configurations that are the same as or similar to those of  FIGS.  4  to  9 B  are provided with the same reference numerals, and a description thereof will not be repeated. 
     Referring to  FIG.  12   , at least one protection structure  1221  may be formed to partially overlap the at least one second motor ventilation hole  720 . The protection structure  1121  may be formed of the same material as that of the second enclosure  420  that faces the second surface  502  of the motor housing  500 . The protection structure  1221  may be integrally formed with the second enclosure  420 . As another example, the protection structure  1121  may be integrally formed with an assembly disposed between the second enclosure  420  and the motor housing  500 . The protection structure  1221  may extend perpendicularly to the second enclosure  420  or the assembly toward the first enclosure  410  from the second enclosure  420  or the assembly. The seating structure  411  may be formed of the same material as that of the first enclosure  410 . The seating structure  411  may be integrally formed with the first enclosure  410 . The seating structure  411  may extend perpendicularly to the second enclosure  420  toward the second enclosure  420  from the first enclosure  410 . 
     The protection structure  1221  may be disposed to be spaced apart from the side surface  514  of the motor housing  500 , in which the second motor ventilation hole  720  is formed, while the specific gap “g” is interposed therebetween. The protection structure  1221  may be disposed to be spaced apart from the side surface  514  of the motor housing  500 , in which the second motor ventilation hole  720  is formed, while the specific gap “g” that is smaller than the size of the sound absorbing member being interposed therebetween. For example, the protection structure  1221  may be spaced apart from the side surface  514  of the motor housing  500 , in which the second motor ventilation hole  720  is formed, while the specific gap “g” of 0.01 mm to 0.3 mm being interposed therebetween. 
     The protection structure  1221  may be disposed to contact or be spaced apart from the seating structure  411  by a spacing distance that is smaller than the size of the sound absorbing member. For example, the protection structure  1221  may be spaced apart from the seating structure  411  by a spacing distance of 0.01 mm to 0.3 mm. 
     Due to the protection structure  1221 , the sound absorbing member cannot pass between the side surface  514  of the motor housing  500  and the protection structure  1221 . Furthermore, the sound absorbing member cannot pass between the protection structure  1221  and the seating structure  411 . Due to the protection structure  1221 , the sound absorbing member cannot pass through the second motor ventilation hole  720 . Even when the sound absorbing member is broken, the broken sound absorbing member cannot pass through the second motor ventilation hole  720 . Accordingly, a defect caused as the second motor ventilation hole  720  is blocked by the sound absorbing member may be prevented, and the sound absorbing member may be prevented from being introduced into the interior of the motor housing  500  through the second motor ventilation hole  720 . 
       FIGS.  13 A,  13 B,  14  and  15    are views illustrating a protection structure applied to a second motor ventilation hole of an electronic device according to various embodiments.  FIG.  13 B  is a view taken along line F-F′ of  FIG.  13   . In  FIGS.  13 A,  13 B,  14  and  15   , configurations that are the same as or similar to those of  FIGS.  4  to  9 B  are provided with the same reference numerals, and a description thereof will not be repeated. 
     Referring to  FIGS.  13 A,  13 B,  14  and  15   , the protection structures  1321 ,  1421 , and  1521  may be implemented as a separate structure from the first enclosure  410 . The protection structures  1321 ,  1421 , and  1521  may be formed to face the second motor ventilation hole  720  around the second motor ventilation hole  720 . The protection structures  1321 ,  1421 , and  1521  may be disposed to be spaced apart from the side surface  514  of the motor housing  500  having the second motor ventilation hole  720 . 
     The seating structure  411  may be formed to overlap at least a portion of the side surface  514  of the motor housing  500 , except for the second motor ventilation hole  720 . The seating structure  411  may be formed to extend from at least any one of the first enclosure  410  and the second enclosure  420  substantially perpendicularly. The seating structure  411  may be formed parallel to the side surface  514  of the motor housing  500  while being spaced apart from the side surface  514  of the motor housing  500 . 
     The protection structures  1321 ,  1421 , and  1521  may have a height that is the same as or different from that of the seating structure  411 . The gaps “g” of the protection structures  1321 ,  1421 , and  1521  and the seating structure  411  from the side surface  514  of the motor housing  500  having the second motor ventilation hole  720  may be the same or different. 
     The protection structures  1321 ,  1421 , and  1521  may be formed of a sponge material, a 2-dimensional or 3-dimensional mesh material, a rubber material, a stainless steel material, a plastic material, or a material, in which at least two thereof are mixed. The protection structures  1321 ,  1421 , and  1521  may be formed through a dispensing scheme, for example, by using bonding or expandable sponge. 
     The protection structures  1321 ,  1421 , and  1521  may be formed in various forms. As an example, the protection structure  1321  illustrated in  FIGS.  13 A and  13 B  may have a polyhedral shape (e.g., a hexagonal shape). One surface of the protection structure  1321  may be attached to the first enclosure  410  through an adhesive member  1310 . The side surface of the protection structure  1321 , which is substantially perpendicular to one surface thereof, which is attached to the adhesive member  1310 , may be disposed to be spaced apart from the side surface  514  of the motor housing  500  having the second motor ventilation hole  720  by the specific gap “g”. The specific gap “g” may be smaller than the air absorbing material (e.g., the air suction material  541  of  FIG.  5   ) that constitutes the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ). Accordingly, a defect caused as the first motor ventilation hole (e.g., the ventilation hole  700  of  FIG.  7   ) as well as the second motor ventilation hole  720  is blocked due to the air absorbing material included in the sound absorbing member may be prevented. Furthermore, the air adsorbing material included in the sound absorbing member may be prevented from being introduced into the motor housing  500 . 
     As another example, the protection structure  1421  illustrated in  FIG.  14    may include a first protection area  1401  that is attached to the first enclosure  410 , and a second protection area  1402  that is spaced apart from the side surface  514  of the motor housing  500  having the second motor ventilation hole  720 . The first protection area  1401  and the second protection area  1402  may be formed to be substantially perpendicular to each other. The second protection area  1402  of the protection structure  1421  may be disposed to be spaced apart from the side surface of the motor housing  500  having the second motor ventilation hole  720  while the specific gap “g” is interposed therebetween. The specific gap “g” may be smaller than the air absorbing material (e.g., the air suction material  541  of  FIG.  5   ) that constitutes the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ). Accordingly, a defect of blocking the first motor ventilation hole (e.g., the ventilation hole  700  of  FIG.  7   ) as well as the second motor ventilation hole  720  due to the air absorbing material included in the sound absorbing member may be prevented. Furthermore, the air adsorbing material included in the sound absorbing member may be prevented from being introduced into the motor housing  500 . 
     As another example, the protection structure  1521  illustrated in  FIG.  15    may include a first protection area  1501  that is attached to the first enclosure  410 , and a second protection area  1502  that is spaced apart from the side surface  514  of the motor housing  500  having the second motor ventilation hole  720 . The second protection area  1502  may be attached to the side surface  514  of the motor housing  500  or be spaced apart from the side surface  514  of the motor housing  500 . The protection structure  1521  may include at least one slit  1510 . The at least one slit  1510  may overlap the at least one second motor ventilation hole  720 , and may be connected to the second motor ventilation hole  720 . Through the at least one slit  1510  and the at least one second motor ventilation hole  720 , air may flow between an inside and an outside of the vibration motor module (e.g., the vibration motor module  510  of  FIG.  5   ). The interior air of the vibration motor module may be discharged to the outside of the vibration motor module through the at least one slit  1510  and the at least one second motor ventilation hole  720 . The exterior air may be introduced into the vibration motor module through the at least one slit  1510  and the at least one second motor ventilation hole  720 . The at least one slit  1510  may be formed at at least a portion of the second protection area  1502  of the protection structure  1521 , or may be formed at at least a portion of the first protection area  1501  and a portion of the second protection area  1502  of the protection structure  1521 . A width of the at least one slit  1510  may be smaller than a size of the sound absorbing member. The at least one slit  1510  may be disposed to cross the second motor ventilation hole  720 . At least a partial area of the at least one slit  1510  may overlap a partial area of the second motor ventilation hole  720 . A size of an area CA, in which the at least one slit  1510  and the at least one second motor ventilation hole  720  cross (or overlap) each other, may be smaller than a size of the sound absorbing member. Accordingly, a defect caused as the second motor ventilation hole  720  is blocked by the sound absorbing member may be prevented, and the sound absorbing member may be prevented from being introduced into the inner space of the motor housing  500  through the second motor ventilation hole  720  and the slit  1510 . 
       FIGS.  16 A,  16 B,  16 C and  16 D  are views illustrating a protection structure applied to a first motor ventilation hole of an electronic device according to various embodiments.  FIG.  16 D  is a cross-sectional view illustrating a coupling relationship between the first enclosure and the second enclosure, taken along line G-G′ of  FIG.  16 C . In  FIGS.  16 A,  16 B,  16 C and  16 D , configurations that are the same as or similar to those of  FIGS.  4  to  9 B  are provided with the same reference numerals, and a description thereof will be replaced by the description made in  FIGS.  4  to  9 B . 
     Referring to  FIGS.  16 A,  16 B,  16 C and  16 D , the electronic device according to various embodiments may include the second circuit board  570  connected to the vibration motor module, and the first circuit board  560 , to which the speaker module and the second circuit board  570  are electrically connected. 
     A protection structure  1621  may be disposed on the first circuit board  560  and the second circuit board  570 . The protection structure  1621  may be formed in the first motor ventilation hole  710  to face a residual space of the first motor ventilation hole  710 , which is left after the second circuit board  570  is accommodated. The protection structure  1621  may be formed of a sponge material, a 2-dimensional or 3-dimensional mesh material, a rubber material, a stainless steel material, a plastic material, or a material, in which at least two thereof are mixed. The protection structure  1621  may be formed through a dispensing scheme, for example, by using bonding or expandable sponge. 
     The gap “g” between the protection structure  1621  and the side surface  514  of the motor housing  500  having the first motor ventilation hole  710  may be smaller than the size of the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ). Accordingly, a defect caused as the first motor ventilation hole  710  is blocked by the sound absorbing member may be prevented, and the sound absorbing member may be prevented from being introduced into the inner space of the motor housing  500  through the first motor ventilation hole  710 . 
     As an example, the protection structure  1621 , as illustrated in  FIGS.  16 A and  16 B , may overlap a partial area of the first circuit board  560  disposed on the second circuit board  570 , and may not overlap the remaining areas of the first circuit board  560  disposed on the second circuit board  570 . The protection structure  1621  may be formed to cover the partial area of the first circuit board  560  disposed on the second circuit board  570 , and may be formed not to cover the remaining areas of the first circuit board  560  disposed on the second circuit board  570 . 
     As another example, the protection structure  1621 , as illustrated in  FIGS.  16 C and  16 D , may overlap the entire area of the first circuit board  560  disposed on the second circuit board  570 . The protection structure  1621  may fill a space between a side surface of the motor housing  500  and a side surface of the first enclosure  410 , which face each other. The protection structure  1621  may contact the side surface of the motor housing  500  having the first motor ventilation hole  710 . Because the protection structure  1621  is formed of a material having a ventilation property, the air may flow through the protection structure  1621  and the first motor ventilation hole  710 . 
       FIGS.  17 A  is a view illustrating a protection structure applied to a first motor ventilation hole of an electronic device according to various embodiments.  FIG.  17 B  is a cross-sectional view illustrating a coupling relationship between the first enclosure and the second enclosure, taken along line H-H′ of  FIG.  17 A . In  FIGS.  17 A and  17 B , configurations that are the same as or similar to those of  FIGS.  4  to  9 B  are provided with the same reference numerals, and a description thereof will not be repeated. 
     Referring to  FIGS.  17 A and  17 B , the protection structure  1721  may be formed as a partial area of the first circuit board  560 , which is adjacent to the first motor ventilation hole  710 , extends to face the first motor ventilation hole  710 . The protection structure  1721  may be formed of the same material and stack structure as those of the first circuit board  560 . The protection structure  1721  may be integrally formed with the first circuit board  560  to be disposed on the second circuit board  570 . 
     The gap “g” between the protection structure  1721  and the side surface  514  of the motor housing  500  having the first motor ventilation hole  710  may be smaller than the size of the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ). A defect caused as the first motor ventilation hole  710  is blocked by the sound absorbing member may be prevented, and the sound absorbing member may be prevented from being introduced into the inner space  901  of the motor housing  500  through the first motor ventilation hole  710 . Accordingly, the air may flow between the inner space  901  disposed between the first enclosure  410  and the second enclosure  420 , and the outer space  902 . 
       FIG.  18    is a view illustrating a protection structure applied to a first motor ventilation hole of an electronic device according to various embodiments. In  FIG.  18   , configurations that are the same as or similar to those of  FIGS.  4  to  9 B  are provided with the same reference numerals, and a description thereof will not be repeated. 
     Referring to  FIG.  18   , a protection structure  1821  may include a first protection structure  1801  and a second protection structure  1802 . 
     The first protection structure  1801  may be formed as a partial area of the first circuit board  560 , which is adjacent to the first motor ventilation hole  710 , extends to face the first motor ventilation hole (e.g., the first motor ventilation hole  710  of  FIG.  7 A ). The first protection structure  1801  may be formed of the same material and stack structure as those of the first circuit board  560 . The first protection structure  1801  may be integrally formed with the first circuit board  560  to be disposed on the second circuit board  570 . 
     The second protection structure  1802  may be disposed on the first protection structure  1801 . The second protection structure  1802  may be formed to face a residual space of the first motor ventilation hole, which does not face the second circuit board  570  and the first protection structure  1801  to be left. The second protection structure  1802  may be formed of a material that is the same as or different from that of the first protection structure  1801 . For example, the second protection structure  1802  may be formed of a sponge material, a 2-dimensional or 3-dimensional mesh material, a rubber material, a stainless steel material, a plastic material, or a material, in which at least two thereof are mixed. The second protection structure  1802  may be formed through a dispensing scheme, for example, by using bonding or expandable sponge. 
     The spacing distance between the protection structure  1821  and the side surface of the motor housing having the first motor ventilation hole  710  may be smaller than the size of the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ). Accordingly, a defect caused as the first motor ventilation hole is blocked by the sound absorbing member may be prevented, and the sound absorbing member may be prevented from being introduced into the inner space of the motor housing through the first motor ventilation hole. 
       FIG.  19 A  is a view illustrating a vibration motor module, in which an auxiliary motor ventilation hole is formed on one surface thereof, in an electronic device according to various embodiments.  FIG.  19 B  is a cross-sectional view illustrating a coupling relationship between the first enclosure and the second enclosure, taken along line I-I′ of  FIG.  19 A . In  FIGS.  19 A and  19 B , configurations that are the same as or similar to those of  FIGS.  4  to  9 B  are provided with the same reference numerals, and a description thereof will be replaced by the description made in  FIGS.  4  to  9 B . 
     Referring to  FIGS.  19 A and  19 B , at least one auxiliary motor ventilation hole  1900  may be formed on the first surface  501  of the motor housing  500  seated in the first enclosure  410 . An adhesive member  1950  may be disposed between the first enclosure  410  and the first surface  501  of the motor housing  500 . The adhesive member  1950  may be an adhesive tape, poron, or a bonding adhesive. 
     A plurality of adhesive members  1950  may be provided, and the adjacent adhesive members  1950  may be disposed to be spaced apart from each other. The spacing spaces between the adhesive members  1950  may be used as a pipeline that connect the auxiliary motor ventilation hole  1900 , the first resonance space that is the outer space (e.g., the outer space  902  of  FIG.  9 A ) of the motor housing  500  and the second resonance space that is the inner space (e.g., the inner space  901  of  FIG.  9 A ) of the motor housing  500 . 
     A thickness of the adhesive member  1950  corresponding to the gap between the first enclosure  410  and the first surface  501  of the vibration motor module  510  may be smaller than the size of the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ). Accordingly, a defect caused as the auxiliary motor ventilation hole  1900  is blocked by the sound absorbing member may be prevented, and the sound absorbing member may be prevented from being introduced into the inner space of the motor housing  500  through the auxiliary motor ventilation hole  1900 . 
       FIG.  20    is a graph depicting speaker module performance according to presence of at least one protection structure of an electronic device according to various embodiments. 
     Referring to  FIG.  20   , line  2001  depicts a sound pressure level (SPL) according to a frequency of an embodiment including the protection structure (e.g., the protection structure  1121  of  FIGS.  11 A,  11 B and  11 C , the protection structure  1221  of  FIG.  12   , the protection structure  1321  of  FIGS.  13 A and  13 B , the protection structure  1421  of  FIG.  14   , the protection structure  1521  of  FIG.  15   , the protection structure  1621  of  FIGS.  16 A,  16 B,  16 C  and  16 D, the protection structure  1721  of  FIGS.  17 A and  17 B , and the protection structure  1821  of  FIG.  18   ). Line  2002  depicts a sound pressure level according to a frequency of a comparative example, in which the protection structure is not provided. A performance of the speaker module (e.g., the speaker module  520  of  FIG.  5   ) may be changed according to presence of the protection structure at a corresponding frequency band (e.g., 100 Hz to 15000 Hz). In the comparative example, in which the protection structure is not provided, because the sound absorbing member (e.g., the sound absorbing member  540  of  FIG.  5   ) may be introduced through the motor ventilation hole  700 , the motor ventilation hole  700  may be blocked. In this case, the outer space (e.g., the first resonance space  902 ) of the vibration motor module (e.g., the vibration motor module  510  of  FIG.  5   ) may be blocked from the inner space (e.g., the second resonance space  901 ) of the vibration motor module, thereby blocking the communicable connection. Accordingly, in the comparative example, because the inner space of the vibration motor module is not included in the entire volume of the resonance space, a performance of the speaker module may be relatively low. According to embodiments, in which the protection structure is provided, because the sound absorbing member is prevented from being introduced into the inner space of the vibration motor module through the motor ventilation hole, by the protection structure, a defect caused as the motor ventilation hole is blocked may be prevented. Through the motor ventilation hole, the first resonance space (that is the outer space of the vibration motor module) and the second resonance space (that is the inner space of the vibration motor module) may be connected to each other. Accordingly, in embodiments, because the entire volume of the resonance space includes both the second resonance space and the first resonance space, a performance of the speaker module may be enhanced. In this way, it may be seen that, in embodiments, in which the inner space of the vibration motor module also is used as the resonance space, the sound pressure of the low frequency band is enhanced as compared with the comparative example as the entire volume of the resonance space increases. It may be seen that a low frequency reproduction ability is enhanced in the embodiment, in which the resonance space is increased, as compared with the comparative example. 
     According to various embodiments of the disclosure, although the enclosure  401 , in which the speaker module (e.g., the speaker module  520  of  FIG.  5   ) and the vibration motor module (e.g., the vibration motor module  510  of  FIG.  5   ) are disposed in the interior thereof, has been mainly described, a component module having the inner space together with the speaker module may be additionally disposed in the enclosure. Because the component module is formed to include a configuration (e.g., the motor ventilation hole (e.g., the motor ventilation hole  700  of  FIGS.  7 A,  7 B and  7 C ) that is the same as or similar to that of the vibration motor module, the performance of the speaker module and the performance of the component module may be secured. 
     According to various embodiments of the disclosure, although the protection structure (e.g., the protection structure  1121  of  FIGS.  11 A,  11 B and  11 C , the protection structure  1221 , the protection structure  1321  of  FIGS.  13 A and  13 B , the protection structure  1421  of  FIG.  14   , the protection structure  1521  of  FIG.  15   , the protection structure  1621  of  FIGS.  16 A,  16 B,  16 C and  16 D , the protection structure  1721  of  FIGS.  17 A and  17 B , the protection structure  1821  of  FIG.  18   ) disposed to face the motor ventilation hole of the vibration motor module has been mainly described, a separate protection structure which is disposed to face the speaker ventilation hole of the speaker module may be additionally provided. The separate protection structure may be configured in a way that is the same as or similar to the protection structure that faces the motor ventilation hole. 
     In the disclosure, if an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively”, as “coupled with,” “coupled to,” “connected with,” or “connected to” another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element. 
     In the disclosure, the expression “configured to” may be interchangeably used with, for example, “suitable for”, “capable of”, “modified to”, “made to”, “able to”, or “designed to” according to a situation in a hardware or software way. In some situations, the expression “a device configured to” may mean that the device is “capable of” operating together with another device or other components. For example, a “processor configured to (or set to) perform A, B, and C” may mean a dedicated processor (e.g., an embedded processor) for performing a corresponding operation or a generic-purpose processor (e.g., a central processing unit (CPU) or an application processor) which may perform corresponding operations by executing one or more programs which are stored in a memory device. 
     The term “module” used in the disclosure may indicate a unit configured in a hardware, software, or firmware way, and for example, may be used interchangeably with the terms such as logic, a logic block, a component, or a circuit. The “module” may be an integral component, or a minimum unit or a part which performs one or more functions. The “module” may be implemented mechanically or electronically, and for example, may include an application-specific integrated circuit (ASIC) chip, field-programmable gate arrays (FPGSs), or a programmable logic device that is known or to be developed in the future, which performs some operations. 
     At least some of the devices (e.g., modules or functions) or methods (e.g., operations) according to various embodiments of the disclosure may be implemented by an instruction stored in a computer-readable storage medium (e.g., the memory), for example, in the form of a program module. When the instruction is executed by a processor, the processor may perform a function corresponding to the instruction. The computer-readable recording medium may be non-transitory, and may include a hard disk, a floppy disk, a magnetic medium (e.g., a magnetic tape), an optical recording medium (e.g., a CD-ROM or a DVD), an magneto-optical medium (e.g., a floptical disk), and an embedded memory. The instruction may include a code made by a compiler or a code that may be executed by an interpreter. 
     According to various embodiments, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added. 
     While aspects of embodiments have been particularly shown and described, it will be understood that various changes in form and details may be made therein without departing from the spirit and scope of the following claims.