CN209806086U - Sound production device module and terminal equipment - Google Patents

Abstract

The utility model relates to a sound generating mechanism module and terminal equipment. The sound generating device module comprises a shell, a loudspeaker assembly, a microphone assembly and a diaphragm, wherein the loudspeaker assembly, the microphone assembly and the diaphragm are arranged in the shell; a sound inlet channel and a sound outlet channel which can be communicated with the outside of the shell are respectively arranged in the shell; the loudspeaker assembly is communicated with the sound outlet channel; the diaphragm is arranged at the tail end of the sound inlet channel in the shell, the two sides of the diaphragm are correspondingly provided with a first concave part and a second concave part which are oval or waist-round, the first concave part is right opposite to the tail end of the sound inlet channel, the second concave part is right opposite to the sound inlet hole of the microphone assembly, and the positions of the first concave part and the second concave part of the diaphragm are configured to be capable of being stressed to generate vibration so as to transmit sound. The utility model discloses a technological effect lies in, the utility model provides a sound generating mechanism module plays the guard action to the microphone subassembly through the diaphragm to the diaphragm can vibrate the transaudient, makes the better performance pickup performance of microphone subassembly.

Description

Sound production device module and terminal equipment

Technical Field

The utility model belongs to the technical field of the sound and electricity transduction, more specifically, the utility model relates to a sound generating mechanism module and terminal equipment.

Background

With the progress of technology, the trend of consumer electronics to be light, thin, small and small is becoming the current trend. All electronic products contacting with the outside need to consider the problem of environmental adaptability in design and development. The dust-proof and water-proof of electronic products are more and more paid attention by people.

A microphone assembly included in an electronic product having a sound transmitting function generally includes a package structure and a MEMS chip disposed in the package structure. The packaging structure is provided with a through hole so that the MEMS chip can collect sound information of the external environment. However, the micro-electromechanical device of this structure has a through hole, and water and dust easily enter the package structure in use. Usually, the purpose of water and dust prevention is achieved by arranging a filter screen in the collecting hole. In order to adapt to the trend of lightness and thinness of terminal equipment, the MIC and SPK integrated module can effectively save the assembly space in the terminal equipment, but along with the miniaturization of the MEMS sensing device, the size of the collecting hole is smaller and smaller, so that the waterproof and dustproof design of the collecting hole is more and more difficult.

Therefore, there is a need for an improved sound generator module.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a new technical scheme of sound generating mechanism module.

According to one aspect of the present invention, a sound generating device module is provided, which includes a housing, and a speaker assembly, a microphone assembly and a diaphragm disposed in the housing; a sound inlet channel and a sound outlet channel which can be communicated with the outside of the shell are respectively arranged in the shell; the speaker assembly is in communication with the sound outlet channel; the diaphragm is arranged at the tail end of the sound inlet channel in the shell, an oval or waist-round first concave part and a second concave part are correspondingly arranged on two sides of the diaphragm, the first concave part is opposite to the tail end of the sound inlet channel, the second concave part is opposite to the sound inlet hole of the microphone assembly, and the positions of the first concave part and the second concave part of the diaphragm are configured to be capable of being stressed to generate vibration so as to transmit sound.

Optionally, the diaphragm is formed by laminating more than three layers of films, and the films close to the surface of the diaphragm are provided with oval or oval through holes to form the first concave part and the second concave part.

Optionally, the first and second recesses are the same in shape, and are symmetrically distributed on both surfaces of the diaphragm.

Optionally, a frame for fixing the microphone assembly is arranged in the housing, a third recess is arranged on the frame, an outlet of the sound inlet channel is located in the third recess, and the diaphragm is arranged in the third recess.

Optionally, the diaphragm is in sealed connection with the third recess.

Optionally, the microphone assembly further comprises a circuit board disposed in the housing, the microphone assembly is fixed on the circuit board and electrically connected to the circuit board, and the circuit board is disposed between the diaphragm and the microphone assembly; the circuit board is provided with a through hole opposite to the sound inlet hole of the microphone assembly, and the second sunken part is positioned on the other side of the through hole.

Optionally, the circuit board is disposed on a surface of the frame and presses the membrane into the third recess.

Optionally, the diaphragm is sealingly connected to the circuit board.

Optionally, the sound inlet channel is formed in the frame, a pickup port is arranged on the shell, and the head end of the sound inlet channel is communicated with the pickup port in a butt joint mode.

Optionally, be provided with on the outer wall of casing with the pickup mouth of sound inlet channel intercommunication and with the sound outlet of sound outlet channel intercommunication, the pickup mouth with the sound outlet is located same one side of casing.

According to the utility model discloses a further aspect, the utility model discloses still provide a terminal equipment, including foretell sound generating mechanism module.

The utility model discloses a technological effect lies in, the utility model provides a sound generating mechanism module plays the guard action to the microphone subassembly through the diaphragm to the diaphragm can vibrate the transaudient, makes the better performance pickup performance of microphone subassembly.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is an exploded view of a portion of some embodiments of the present invention.

Fig. 2 is a schematic sectional view of a partial structure according to some embodiments of the present invention.

Fig. 3 is a schematic diagram of a diaphragm according to some embodiments of the present invention.

Fig. 4 is an exploded view of another partial structure according to some embodiments of the present invention.

In the figure: the microphone comprises a shell body 1, a pickup port 11, an upper shell 12, a lower shell 13, a middle shell 14, a sound outlet channel 15, a sound outlet hole 16, a microphone component 2, a sound inlet hole 21, a diaphragm 3, a first concave part 31, a second concave part 32, a vibration part 33, a frame 4, a sound inlet channel 41, a third concave part 42, a tail end 43, a head end 44, a circuit board 5 and a through hole 51.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The utility model provides a pair of sound generating mechanism module, in some embodiments, refer to fig. 1 to 3, including casing 1 and the speaker subassembly (not shown), microphone subassembly 2, the diaphragm 3 of setting in casing 1.

The housing 1 is provided therein with a sound inlet passage 41 and a sound outlet passage 15 which can communicate with the outside of the housing 1. The sound intake passage 41 enables sound outside the housing 1 to enter the housing 1 from outside the housing 1 along the sound intake passage 41.

The speaker assembly communicates with a sound outlet channel 15, the sound outlet channel 15 enabling sound emitted by the speaker assembly inside the housing 1 to be emitted from the inside of the housing 1 to the outside of the housing 1 along the sound outlet channel 15. The loudspeaker assembly comprises a vibration system and a magnetic circuit system, and the vibration system and the magnetic circuit system can generate vibration under the cooperation effect to generate sound.

The diaphragm 3 is arranged at the end 43 of the sound inlet channel 41 located inside the housing 1, i.e. the diaphragm 3 covers the end 43 of the sound inlet channel 41. The two surfaces of the diaphragm 3 are correspondingly provided with a first concave portion 31 and a second concave portion 32 which are oval or waist-round, that is, the horizontal cross sections of the first concave portion 31 and the second concave portion 32 are both oval or waist-round.

The first recess 31 is opposed to the distal end 43 of the sound intake passage 41. The diaphragm 3 can prevent water from passing through to a certain extent, and when water moves towards the inside of the shell 1 along the sound inlet channel 41, the water can be blocked by the diaphragm 3, so that the water is difficult to continue to move towards the inside of the shell 1 through the tail end 43 of the sound inlet channel 41, and the normal work of other components in the shell is protected.

The second recess 32 is opposed to the sound inlet hole 21 of the microphone set 2. The diaphragm 3 can vibrate at the positions of the first recess 31 and the second recess 32 according to the sound entering the sound inlet channel 41, that is, the portion between the bottom surface of the first recess 31 and the bottom surface of the second recess 32 forms the vibration portion 33 of the diaphragm 3, and the sound outside the housing 1 can be transmitted to the sound inlet hole 21 of the microphone assembly 2 by the vibration of the vibration portion 33, so that the microphone assembly 2 can normally operate.

On the one hand, the diaphragm 3 may cover the sound inlet hole 21 of the microphone assembly 2, so that sound can be more efficiently transmitted to the microphone assembly 2 by vibration of the diaphragm 3. On the other hand, it is also possible to prevent water from entering the inside of the microphone assembly 2 along the sound inlet hole 21 of the microphone assembly 2 to cause damage to the microphone assembly 2.

The first and second recesses 31 and 32 are configured to provide a sufficient vibration space for the vibration portion 33, so as to prevent the vibration portion 33 from contacting the sound inlet channel or/and the microphone assembly 2 when vibrating, and to prevent the size of the vibration portion 33 from being limited by the size of the end 43 of the sound inlet channel 41 or/and the sound inlet hole 21 of the microphone assembly 2. The design of the first concave part and the second concave part can increase the vibration area as much as possible, improve the area utilization rate of the diaphragm 3 and reduce the distortion in the sound transmission process. On the other hand, the vibrating portion 33 of the present invention is oval or oval, and compared with a circular vibrating portion having the same diameter as the minor axis of the oval or oval, the present invention can obtain a larger vibrating area, and avoid the occurrence of distortion when the circular vibrating portion transmits vibration; especially, when the diaphragm is in a shape of a long and short axis such as a rectangle, the utilization rate of the diaphragm can be effectively increased, and the distortion of sound transmission can be reduced.

In some embodiments, referring to fig. 3, the first recess 31 and the second recess 32 are provided at an intermediate position of the membrane 3. After the first concave part 31 or/and the second concave part 32 on the diaphragm 3 are/is connected to the tail end of the sound inlet channel, the stress of the whole structure is balanced, and the size of the vibration part 33 can be as large as possible under the condition that the whole structure is stable.

In some embodiments, the membrane 3 may be formed by laminating three or more membrane layers, each membrane layer near the surface of the membrane 3 has an oval or oval-shaped through hole, and at least the membrane layer in the middle layer does not have an oval or oval-shaped through hole, so as to form the first recess 31 and the second recess 32. Further, only the middle layer of the membrane layer does not have oval or oval through holes, so that the vibrating portion 33 is thin and light enough and is more sensitive to sound. Furthermore, the film layers of different layers can be made of different materials to meet different functional requirements, such as waterproof, sealing, strength, tensile strength and the like. Furthermore, the film layer of the middle layer can be made of materials which can elastically vibrate and can prevent water, such as silica gel, rubber and the like.

In some embodiments, the horizontal projection of the outlet 43 of the sound intake channel 41 is located within the outline of the horizontal projection of the first recess 31. The size of the vibration part 33 is larger than that of the outlet 43 of the sound inlet passage 41 to secure the vibration transmission effect of sound and reduce distortion.

Optionally, the first concave portion 31 and the second concave portion 32 have the same shape and size, and the first concave portion 31 and the second concave portion 32 are symmetrically distributed on the front surface and the back surface of the diaphragm 3. The first depressed part and the second depressed part of symmetric distribution can be better provide the vibration effect, satisfy the performance requirement that reduces the distortion.

In some embodiments, referring to fig. 1 and 2, a frame 4 is disposed within the housing 1. The frame 4 serves to fix the microphone assembly 2 within the housing 1. When the frame 4 and the housing 1 are designed separately, the frame 4 can be used as a mounting bracket of the microphone assembly 2 during assembly, so as to provide support and positioning for mounting the microphone assembly 2, and facilitate accurate mounting of the microphone assembly 2 in the housing 1. The frame 4 is provided with a third recess 42. The distal end 43 of the sound intake passage 41 is located in the third recess 42. The third concave part 42 provides a mounting position for the diaphragm 3 during assembly, and positioning and mounting are convenient. Further, the size and depth of the third recess 42 are matched to the diaphragm 3, so that the diaphragm 3 can be stably and accurately fitted in the third recess 42 to cover the end 43 of the sound-intake passage 41.

Preferably, the diaphragm 3 and the third recess 42 form a sealed connection, so that the diaphragm 3 can seal the end of the sound inlet channel 41 and the area of the first recess 31, and effectively prevent liquid from penetrating into the microphone module through the gap between the diaphragm 3 and the third recess 42. Sealing connection's mode can be sealed through the rubber coating, also can be that diaphragm 3 adopts soft materials to make, realizes sealedly through the pressfitting, the utility model discloses the mode to sealing connection does not restrict, and the suitable sealing connection mode can be selected as required to the technical staff in the field.

In some embodiments, referring to fig. 1 and 2, a circuit board 5 disposed within the housing 1 is also included. The circuit board 5 may be a flexible circuit board or a hard circuit board, which is not limited by the present invention. The microphone assembly 2 is fixed on the circuit board 5 and electrically connected to the circuit board 5, so that the microphone assembly 2 can transmit an electrical signal converted from sound to the system side through the circuit board 5. Further, the microphone assembly 2 is hermetically fixed on the circuit board 5.

Typically, the length of the circuit board 5 is much greater than the length of the microphone assembly 2. Circuit board 5 sets up between diaphragm 3 and microphone subassembly 2, is convenient for utilize the frame 4 surface support microphone subassembly 2 in the third depressed part 42 outside when the assembly, and the extra volume that increases when reducing frame 4 support circuit board 5 makes the utility model discloses compact structure. The circuit board 5 is provided with a through hole 51 opposite to the sound inlet hole 21 of the microphone assembly 2, and the second recess 32 is located at the other side of the through hole 51, so that the second recess 32 is opposite to and communicated with the sound inlet hole 21 of the microphone assembly 2 through the through hole 51.

In some embodiments, referring to fig. 2, the circuit board 5 is disposed on the surface of the frame 4 and the membrane 3 is pressed in the third recess 42, so as to improve the fixing stability of the membrane 3 and prevent the membrane 3 from being disposed such that the circuit board 5 is deformed due to the uneven mounting position during the assembling process.

In some embodiments, the horizontal projection of the through hole 51 of the circuit board 5 and the sound inlet hole 21 of the microphone assembly 2 is located within the outline of the horizontal projection of the second recess 32. The size of the vibration part 33 is larger than the size of the through hole 51 of the circuit board 5 and the sound inlet hole 21 of the microphone assembly 2 to ensure the vibration transmission effect of sound and reduce distortion.

In some embodiments, the edge of the outer side of the second concave portion 32 on the membrane 3 is connected to the circuit board 5 in a sealing manner, which may be a glue sealing manner, or a press sealing manner made of a soft material, and the present invention is not limited thereto.

In some embodiments, referring to fig. 2, the sound intake passage 41 is molded in the frame 4, so that the sound intake passage 41 is made by integral molding and can secure good sealing performance. The housing 1 is provided with a sound pickup port 11, and a head end 44 of the sound inlet passage 41 communicates with the sound pickup port 11. Further, the head end 44 can be connected with the sound-collecting port 11 in a sealing manner, so as to minimize energy loss during the process that the external sound is transmitted into the housing 1 through the sound-inlet channel 41. In some other embodiments, the frame 4 and the housing 1 may be formed by an integral molding process, which is not limited by the present invention.

In some embodiments, as shown in fig. 1, 2 and 4, the housing 1 includes an upper shell 12, a lower shell 13, and a middle shell 14 between the upper shell 12 and the lower shell 13. The upper shell 12 and the lower shell 13 which are buckled with each other can encapsulate the loudspeaker assembly, the microphone assembly 2 and the diaphragm 3 in the shell. The middle shell can provide support strength for the shell; further, it is also possible to provide a separation function or the like for the speaker module and the microphone module 2, and prevent mutual interference between sound incoming and sound outgoing. Further, the sound outlet channel 15 may be disposed in the middle shell 14, and the middle shell 14 and the lower shell 13 enclose to form the sound outlet channel 15; in the middle shell 14, the sound outlet channel 15 may be formed in one step, and the sealing performance of the sound outlet channel 15 may be improved by disposing the sound outlet channel 15 in the middle shell 14, compared with forming the sound outlet channel by assembling the shell. The sound outlet channel 15 is communicated with the outside through a sound outlet hole 16 arranged on the outer wall of the shell 1, so that the sound outlet function is realized.

Taking the embodiment shown in fig. 4 as an example, the frame 4 is fastened to the inner surface of the bottom of the lower case 13, and the head 44 of the sound inlet channel 41 is abutted to the sound pickup port 11. The middle case 14 is placed on the bottom inner surface of the lower case 13, in which three sides of the sound emission path 15 are directly formed, the sound emission path 15 extending from the upper left to the lower right, and the sound emission path 15 is butted at the sound emission hole 16. As shown in fig. 4, the side of the sound outlet passage 15 close to the paper surface is open, the open portion is fitted on the side wall of the lower case 13, and the sound outlet passage 15 is formed by enclosing the side wall of one lower case 13 and the surfaces of three middle cases. The speaker assembly is disposed at an upper left position of the center housing 14, and a sound emitting portion of the speaker assembly may be abutted against an upper left region of the sound emitting passage 15 to emit sound through the sound emitting passage 15 and the sound emitting hole 16.

In some embodiments, referring to fig. 1, the sound inlet 21 and the sound outlet 16 are located on the same side of the housing 1, so as to meet the design requirements of the terminal device.

According to the utility model discloses a further aspect, the utility model discloses still provide a terminal equipment, including foretell sound generating mechanism module. Further, the terminal device may include a mobile phone, an intercom, a tablet computer, and the like.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (11)

1. A sound generating device module is characterized by comprising a shell, a loudspeaker assembly, a microphone assembly and a diaphragm, wherein the loudspeaker assembly, the microphone assembly and the diaphragm are arranged in the shell; a sound inlet channel and a sound outlet channel which can be communicated with the outside of the shell are respectively arranged in the shell; the speaker assembly is in communication with the sound outlet channel; the diaphragm is arranged at the tail end of the sound inlet channel in the shell, an oval or waist-round first concave part and a second concave part are correspondingly arranged on two sides of the diaphragm, the first concave part is opposite to the tail end of the sound inlet channel, the second concave part is opposite to the sound inlet hole of the microphone assembly, and the positions of the first concave part and the second concave part of the diaphragm are configured to be capable of being stressed to generate vibration so as to transmit sound.

2. The sound generating device module according to claim 1, wherein the diaphragm is formed by laminating three or more layers, and the layers adjacent to the surface of the diaphragm are provided with oval or oval through holes to form the first and second concave portions.

3. The sound generator module of claim 1, wherein the first and second depressions are identical in shape and are symmetrically disposed on both surfaces of the diaphragm.

4. The acoustic device module of claim 1, wherein a frame is disposed in the housing for holding a microphone assembly, the frame has a third recess, the outlet of the sound inlet channel is located in the third recess, and the diaphragm is disposed in the third recess.

5. The sound generator module of claim 4, wherein the diaphragm is sealingly connected to the third recess.

6. The sound generator module of claim 4 further comprising a circuit board disposed within the housing, the microphone assembly being secured to and electrically connected to the circuit board, the circuit board being disposed between the diaphragm and the microphone assembly; the circuit board is provided with a through hole opposite to the sound inlet hole of the microphone assembly, and the second sunken part is positioned on the other side of the through hole.

7. The sound generator module of claim 6, wherein the circuit board is disposed on a surface of the frame and press-fits the diaphragm within the third recess.

8. The sound generator module of claim 6, wherein the diaphragm is sealingly coupled to the circuit board.

9. The acoustic apparatus module of claim 4, wherein the sound inlet channel is formed in the frame, the housing is provided with a sound pickup port, and a head end of the sound inlet channel is in butt joint communication with the sound pickup port.

10. The acoustic apparatus module of claim 1, wherein a sound pickup port communicating with the sound inlet channel and a sound outlet communicating with the sound outlet channel are disposed on an outer wall of the housing, and the sound pickup port and the sound outlet are located on the same side of the housing.

11. A terminal device comprising the sound-generating device module of any one of claims 1-10.