Patent Publication Number: US-2023156387-A1

Title: Microphone speaker with dual independent sound chambers

Description:
TECHNICAL FIELD 
     This disclosure relates to a microphone speaker, and more particularly relates to a microphone speaker with dual independent sound chambers. 
     BACKGROUND 
     A microphone speaker is an audio device with both sound collection and playback functions. In practical applications, for a microphone speaker with dual speakers, the two speakers are generally arranged symmetrically on both sides of the housing, and the rear ends of the two speakers are placed in the same chamber inside the housing. When the two speakers sound at the same time, the opposing airflows generated at the rear ends of the two speakers will collide and affect each other, thereby canceling some sound details, resulting in poor sound effects of the microphone speaker, making it difficult to meet user needs. 
     SUMMARY 
     In view of the shortcomings of the related art, the technical problem to be solved by the disclosure is to provide a microphone speaker with dual independent sound chambers, which can avoid the adverse effects of the opposite airflows inside the housing and thus improve the sound effect. 
     In order to solve the above technical problem, the present disclosure adopts the following technical solutions. 
     There is provided a microphone speaker with dual independent sound chambers, including a housing and a microphone assembly arranged on the housing. A barrier is formed in the housing, and the housing is divided into two independent chambers by the barrier. Two speakers are respectively embedded in two sides of the housing, and the rear ends of the two speakers are respectively disposed in the two independent chambers. Two air holes are defined in the side of the housing, and are respectively communicated with the two independent chambers, and the air flows generated when the speakers are sounding enter and exit the independent chambers through the respective air holes. 
     In some embodiments, the housing includes a first joining housing and a second joining housing, which are opposed to each other and the two are joined and fixedly connected. 
     In some embodiments, the barrier includes a first partition and a second partition. The first partition is disposed in the first joining housing and the two are integrally formed, and the second partition is disposed in the second joining housing and the two are integrally formed. The edge of the first partition and the edge of the second partition abut against each other, and the connection between the first partition and the second partition is sealed and fitted. 
     In some embodiments, a diaphragm holder is fixed on the side of the housing, and a passive diaphragm is fixed on the diaphragm holder, and the passive diaphragm covers the outside of the two air holes. 
     In some embodiments, the side of the housing is provided with a recess, and the two air holes are both defined in the recess. The diaphragm holder is fixed at the edge of the recess, and the connection between the diaphragm holder and the recess is sealed and fitted, and the passive diaphragm covers the recess. 
     In some embodiments, the passive diaphragm and the two speakers are distributed in a triangular shape. 
     In the microphone speaker with dual independent sound chambers disclosed by this disclosure, the housing is divided into two independent chambers by the barrier, and then the two speakers are respectively inserted into the two independent chambers, and further the side of the housing is provided with two air holes for conducting airflow. When the speakers are working and sounding, the vibration generated will cause airflows to be generated in the independent chambers. The airflows enter and exit through the respective air holes so as to effectively avoid the cancellation of sound details due to the collision of the two rear end airflows, thus providing better sound effect of the microphone speaker with higher fidelity. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a three-dimensional view of a combined microphone speaker according to this disclosure. 
         FIG.  2    is a first schematic diagram in which the speaker body and the microphone assembly are in a split state. 
         FIG.  3    is a second schematic diagram in which the speaker body and microphone assembly are in a split state. 
         FIG.  4    is a first exploded view of the microphone assembly. 
         FIG.  5    is a second exploded view of the microphone assembly. 
         FIG.  6    is the internal structural diagram illustrating the connection between the speaker body and the microphone assembly. 
         FIG.  7    is an exploded view of the speaker body. 
         FIG.  8    is a first perspective view of the housing. 
         FIG.  9    is a second perspective view of the housing. 
         FIG.  10    is an exploded view of the housing. 
         FIG.  11    is a schematic diagram illustrating the structures of the housing and the passive diaphragm. 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure will now be described in greater detail in connection with the accompanying drawings and specific embodiments. 
     Embodiment 1 
     This embodiment provides a microphone speaker with dual independent sound chambers as illustrated in  FIGS.  2  and  8  to  11   , including a housing  13  and a microphone assembly  2  arranged on the housing  13 . A barrier  30  is formed in the housing  13 , and the housing  13  is divided into two independent chambers  31  by the barrier  30 . Two speakers  11  are respectively embedded in two sides of the housing  13 , and the rear ends of the two speakers  11  are respectively disposed in the two independent chambers  31 . Two air holes  136  are defined in the side of the housing  13 , and are respectively communicated with the two independent chambers  31 , and the air flows generated when the speakers  11  are sounding enter and exit the independent chambers  31  through the respective air holes  136 . 
     In the above structure, the housing  13  is divided into two independent chambers  31  by the barrier  30 , and then the two speakers  11  are respectively inserted into the two independent chambers  31 , and further the side of the housing  13  is provided with two air holes  136  for conducting airflow. When the speakers  11  are working and sounding, the vibration generated will cause airflows to be generated in the independent chambers  31 . The airflows enter and exit through the respective air holes  136  so as to effectively avoid the cancellation of sound details due to the collision of the two rear end airflows, thus providing better sound effect of the microphone speaker with higher fidelity. 
     Regarding the specific structure of the housing  13 , in this embodiment, the housing  13  includes a first joining housing  134  and a second joining housing  135 , and the first joining housing  134  and the second joining housing  135  are opposite to each other and are fixedly connected. 
     As a illustrative implementation, the barrier  30  includes a first partition  300  and a second partition  301 . The first partition  300  is disposed in the first joining housing  134  and the two are integrally formed, and the second partition  301  is disposed in the second joining housing  135  and the two are integrally formed. The edge of the first partition  300  and the edge of the second partition  301  abut against each other, and the connection between the first partition  300  and the second partition  301  is sealed and fitted. 
     In this embodiment, the partition of the cavity is achieved by setting two partitions, but this is only a illustrative embodiment of the present disclosure. In practical applications, the partition can also be replaced with a piece of soft material that can block airflow, such as a silicone sheet, etc., and these structures can achieve the function of blocking airflow. Therefore, no matter which form is replaced, as long as it has the function of partitioning the cavity, it shall fall in the scope of protection of the present disclosure. 
     In order to further improve the sound effect, in this embodiment, a diaphragm holder  14  is fixed on the side of the housing  13 , and a passive diaphragm  140  is fixed on the diaphragm holder  14 , and the passive diaphragm  140  covers the outside of the two air holes  136 . 
     Since the passive diaphragm  140  covers the two air holes  136 , when air flows in and out of the air holes  136 , it will directly act on the passive diaphragm  140 . Under the follow-up action of the passive diaphragm  140 , it helps improve the bass effect of the microphone speaker. 
     In order to facilitate the installation of the diaphragm holder  14  while avoiding the passive diaphragm  140  from contacting the housing  13 , in this embodiment, the side of the housing  13  is provided with a recess  137  and two air holes  136  are both defined in the recess  137 . The diaphragm holder  14  is fixed at the edge of the recess  137 , and the connection between the diaphragm holder  14  and the recess  137  is sealed and fitted, and the passive diaphragm  140  covers the recess  137 . 
     As a illustrative implementation, the passive diaphragm  140  and the two speakers  11  are distributed in a triangular shape. 
     Embodiment 2 
     This embodiment proposes a combined microphone speaker. As illustrated in  FIG.  1    to  FIG.  7   , it includes a speaker body  1  and a microphone assembly  2 , in which: 
     the speaker body  1  includes a circuit board  10 , a speaker  11 , and a first connector  12 , where the speaker  11  and the first connector  12  are each electrically connected to the circuit board  10 ; 
     the microphone assembly  2  includes a microphone head  20  and a second connector  21  electrically connected to the microphone head  20 ; 
     the microphone assembly  2  is detachably fitted with the speaker body  1 , and when the microphone assembly  2  is installed in the speaker body  1 , the second connector  21  is electrically connected to the first connector  12 . 
     In the above microphone speaker, the speaker body  1  and the microphone assembly  2  are designed as a detachable combined structure. When the user needs to use the microphone speaker as a whole, the microphone assembly  2  needs to be installed on the speaker body  1 . Furthermore, through the fitting of the second connector  21  and the first connector  12 , the microphone head  20  and the circuit board  10  can maintain electrical contact. When the user only needs to use the speaker function, the microphone assembly  2  can be removed, and the first connector  12  or the built-in Bluetooth module of the circuit board  10  can be used to receive audio signals, thereby independently achieving the sound playback function. Compared with the related art, the present disclosure can flexibly disassemble and assemble the speaker body and microphone assembly depending on user needs, so as to meet various requirements such as independent use and combined use of the speaker body and microphone assembly. In addition, when the speaker body or microphone assembly is damaged, the repair can be completed by only replacing the speaker body or microphone assembly, which not only facilitates maintenance, but also avoids wasting resources due to the overall scrap of the microphone speaker, which better satisfies the user needs and market demands. 
     In this embodiment, the microphone assembly  2  includes a microphone support  22 , which disposed on the microphone support  22 , and the second connector  21  is fixed to the bottom of the microphone support  22 . The speaker body  1  includes a housing  13 , and the microphone support  22  is detachably fitted with the housing  13 . 
     Further, a insert post  220  is formed at the bottom of the microphone support  22 , a sleeve  130  is formed on the top of the housing  13 , and the insert post  220  is inserted into the sleeve  130  and the two are closely fitted. 
     In the above structure, it is preferable to adopt a plug-in method to achieve fixed fitting. The plug-in insert post  220  and the sleeve  130  can be detachably connected by a tight fit or an interference fit. Of course, it is not limited to this in the actual application process. As an extended application, this embodiment can also be replaced with: the insert post  220  and the sleeve  130  are detachably connected by screw fitting or magnetic attraction fitting. When using magnetic attraction, the upper and lower magnets must be magnetically shielded except for the magnetic attraction surface to avoid adverse effects on the microphone and speakers. 
     In order to support the microphone head  20  while avoiding noise, in this embodiment, the microphone head assembly  2  includes an elastic bracket  23 , and the microphone head  20  is fixed to the elastic bracket  23 , and the elastic bracket  23  is fixed to the microphone support  22 . 
     In order to support and secure the elastic bracket  23 , in this embodiment, a plurality of lugs  230  are formed at the edge of the elastic bracket  23 , and the lugs  230  are provided with clamping holes  231 . A plurality of hooks  221  are formed on the microphone support  22 , and the hooks  221  are aligned with the lugs  230  one by one. The hooks  221  are clamped in the respective clamping holes  231  so that the elastic bracket  23  and the microphone support  22  are clamped and fitted. 
     The above clamping method is not only convenient for disassembly and assembly, but also has a simple structure and does not rely on screw fixation, which helps to save the number of parts. 
     As a illustrative implementation, the present embodiment further includes a net cover  3 , and a threaded portion  133  is formed at the bottom of the sleeve  130 . The net cover  3  is arranged on the outside of the microphone head assembly  2  and the sleeve  130 . The opening of the net cover  3  is screwed and fixed with the threaded portion  133 . 
     Under the action of the net cover  3 , it not only protects the microphone head assembly  2 , but also covers the microphone head assembly  2  and the sleeve  130  as a whole, making the overall combined structure of the microphone speaker more reliable. 
     In order to better fix the second connector  21 , in this embodiment, the insert post  220  is hollow, and two oppositely arranged vertical grooves  222  are formed on the inner side of the insert post  220 . A wiring board  210  is fixed at the end of the second connector  21 , and both side edges of the wiring board  210  are respectively clamped in the two vertical grooves  222 . The tops of the two vertical grooves  222  are fixed to a pressure plate  223 , which clamps the wiring board  210  in the two vertical grooves  222 . 
     In fact, during the plugging process, the second connector  21  will receive a certain pushing force. Under the clamping action of the pressure plate  223 , the second connector  21  can be more stably installed on the inner side of the insert post  220  thus avoiding loosening caused by external forces. 
     In order to better fix the first connector  12 , in this embodiment, a cavity  131  is formed under the sleeve  130 , and two oppositely arranged clamping sockets  132  are arranged in the cavity  131 . The first connector  12  is sandwiched between the two clamping sockets  132 , and the first connector  12  is fixed to the housing  13  by the two clamping sockets  132 . 
     Further, the speaker body  1  includes two speakers  11 , which are symmetrically fixed to the housing  13 . A diaphragm holder  14  is embedded in the housing  13 , and a passive diaphragm  140  is fixed to the diaphragm holder  14 , where the passive diaphragm  140  and the two speakers  11  are distributed in a triangular shape. The passive diaphragm  140  can significantly improve the sound effect of the speaker body. 
     Regarding other illustrative structures of the present disclosure, in this embodiment, a mesh cover  15  is fixed to the outside of the housing  13 , and the mesh cover  15  covers the outside of the speakers  11  and the passive diaphragm  140 ; 
     The circuit board  10  includes a Bluetooth module for receiving Bluetooth signals; 
     A handle  16  is formed at the bottom of the housing  13 , and a battery  160  for supplying power to the circuit board  10  is provided in the handle  16 , and a handle sleeve  161  is sleeved on the outer side of the handle  16 , and the handle sleeve  161  is screwed and fixed with the handle  16 ; 
     A panel  17  is fixed to the outside of the housing  13 , a plurality of keycaps  170  are provided on the panel  17 , the circuit board  10  is arranged opposite to the panel  17 , and the circuit board  10  is provided with a plurality of keys  100  for inputting control instructions, the keys  100  are aligned with the keycap  170  in one-to-one correspondence; 
     The first connector  12  is an audio socket, the second connector  21  is an audio plug, and the second connector  21  passes through the insert post  220  and extends downward. As an alternative implementation of the present disclosure, the first connector  12  and the second connector  21  may also be other types of connectors, such as contact type connectors. 
     The foregoing merely portrays some illustrative embodiments according to the present disclosure, which are not used to limit the present disclosure. Any modification, equivalent replacement or improvement made without departing from the technical scope of the disclosure shall all be included in the scope of protection of this disclosure.