Sound production module and terminal equipment

Abstract

The utility model provides a sound production module, which comprises a metal shell and a sound production monomer arranged in the shell, a sound outlet is arranged on the shell, the sound production monomer is provided with a sound production side and a sound back side which are deviated from each other, the sound production side faces the sound outlet, and a waterproof sealing ring extending along the sound outlet is arranged on the shell. The waterproof sealing ring is elastic, at least part of the waterproof sealing ring is arranged between the sound production side and the shell, a first support is arranged between the shell and the back sound side, and the first support presses the back sound side to enable the sound production single body to press against the waterproof sealing ring. The assembly process of the sounding module is simple, the cavity space in the shell can be maximized, and the acoustic performance of the sounding module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic products, in particular to a sound module and a terminal device. Background Art

[0002] As a sound-generating device that converts electrical signals into sound, micro speakers have been used in various occasions in life, such as mobile phones, computers, watches, smart wearables and other fields. As the size of electronic products becomes smaller and smaller, improving the comprehensive performance of the sound module within the existing space of electronic products has become a focus. In the prior art, the sound module adopts an all-metal shell to maximize the volume of the rear sound cavity of the sound module, but most sound modules still need to use a plastic middle shell or a plastic middle shell + injection-molded steel sheet structure to support the sound unit, and further apply glue and seal to separate the front and rear sound cavities. The plastic middle shell structure not only has a high BOM cost and complex process, but also has high requirements on the dimensional tolerance and assembly accuracy of the material due to the size limit of the module. Utility Model Content

[0003] The purpose of this application is to provide a sound module with a full metal shell, which can achieve the separation of the rear sound cavity of the sound module and maximize the volume of the rear sound cavity by eliminating the plastic middle shell supporting the sound unit, while improving the waterproof sealing performance of the sound module.

[0004] A shell, the shell is made of metal and is provided with a sound outlet;

[0005] A sound-emitting unit is disposed in the housing, the sound-emitting unit having a sound-emitting side and a back-sounding side that are separated from each other, and the sound-emitting side faces the sound outlet;

[0006] An elastic waterproof sealing ring is arranged on the housing and extends along the sound outlet, and at least a part of the waterproof sealing ring is arranged between the sound-emitting side and the housing;

[0007] The first bracket is located between the housing and the back-sound side. When the sound-emitting unit is located in the housing, the first bracket presses against the back-sound side so that the sound-emitting unit presses against the waterproof sealing ring.

[0008] In one embodiment, the waterproof sealing ring includes a first portion disposed between the sound-emitting side and the housing.

[0009] In one embodiment, the waterproof sealing ring further comprises a second part disposed outside the housing, and the first part and the second part are an integral structure;

[0010] And / or, a positioning hole is provided on the housing, and the waterproof sealing ring is provided with a positioning portion located in the positioning hole.

[0011] In one embodiment, the waterproof sealing ring is made of silicone;

[0012] And / or, the waterproof sealing ring is integrally injection-molded onto the housing;

[0013] And / or, in the projection from the sound-emitting side to the back-sound side, the inner edge of the waterproof sealing ring located between the sound-emitting side and the housing is located outside the sound outlet.

[0014] In one embodiment, the sound-emitting unit has two opposite first sides and two second sides connecting the two first sides, wherein:

[0015] And / or, a conductive member is provided on the first side;

[0016] And / or, a second elastic bracket is provided between the first side and the housing, one side of the second bracket is fixed to the inner wall of the housing, and the other side of the second bracket abuts against the sound unit;

[0017] And / or, a second elastic bracket is provided between the first edge and the shell, one side of the second bracket is fixed to the inner wall of the shell, the other side of the second bracket is against the sound unit, and the second bracket includes at least one U-shaped structure.

[0018] In one embodiment, a third bracket having elasticity is provided between the second side and the housing, one side of the third bracket is fixed to the inner wall of the housing, and the other side of the third bracket abuts against the sound unit;

[0019] And / or, a third bracket with elasticity is provided between the second side and the shell, one side of the third bracket is fixed to the inner wall of the shell, the other side of the third bracket abuts against the sound unit, and the third bracket includes at least one U-shaped structure;

[0020] And / or, the distance between the second side and the side wall of the shell is ≤0.35 mm.

[0021] In one embodiment, the first bracket includes a first supporting portion connected to the acoustically-rear side, a second supporting portion connected to the housing, and a connecting portion connecting the first supporting portion and the second supporting portion.

[0022] In one embodiment, the angles between the connecting portion and the first supporting portion and the second supporting portion are obtuse angles;

[0023] And / or, two second supporting parts are provided, respectively located on both sides of the first supporting part;

[0024] And / or, two second supporting parts are provided, which are respectively located on both sides of the first supporting part, and the second supporting part has a flange that is bent and extended to be connected to the side surface of the shell;

[0025] And / or, the first bracket is made of metal, and the first bracket is connected to the shell by welding.

[0026] In one embodiment, the housing comprises a metal upper shell and a metal lower shell, the metal upper shell is provided with the sound outlet hole, and a rear sound cavity is formed between the sound-emitting unit, the metal upper shell and the metal lower shell;

[0027] And / or, a rear sound cavity is formed between the sound-emitting unit and the shell, the rear sound cavity is filled with sound-absorbing particles, and the shell is provided with a filling hole and a breathable damping member covering the filling hole.

[0028] On the other hand, the present invention further provides a terminal device, which includes the sound module described in any one of the above items.

[0029] Compared with the related art, the sound module of the utility model has the following beneficial effects:

[0030] The sound module of the utility model is provided with a waterproof sealing ring between the sound-emitting side of the sound-emitting unit and the metal shell of the sound module. The waterproof sealing ring extends along the sound outlet, and a first bracket is provided to press the sound-emitting unit against the waterproof sealing ring, thereby eliminating the plastic middle shell and the glue coating space required for fixing the middle shell, saving module space and improving the waterproof performance of the sound module. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0032] Figure 1 This is a schematic diagram of the exploded structure of the sound module in one embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the planar structure of the sound module in one embodiment of the utility model;

[0034] Figure 3 For along Figure 2 Schematic diagram of the cross section along the AA line;

[0035] Figure 4 This is a schematic diagram of the planar structure of a sound module in another embodiment of the utility model;

[0036] Figure 5 For along Figure 4 Schematic diagram of the cross section along the CC line;

[0037] Figure 6 For along Figure 4 Schematic diagram of the cross section of the DD line.

[0038] Description of Figure Numbers:

[0039] Label name Label name 100 Sound module 143 Second support part 11 Upper shell 144 Flanging 111 Voice outlet 15 Second bracket 12 Lower shell 16 The third bracket 121 Filling hole 20 Sound unit 122 Damping parts 21 Sounding side 13 Waterproof sealing ring 22 Back side 14 First bracket 30 Conductive parts 141 First support part 40 Back cavity 142 Connection DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] A micro speaker usually includes a frame, a vibration system and a magnetic circuit system connected to the frame. The vibration system includes a diaphragm and a voice coil connected to the diaphragm. When the voice coil is energized, the magnetic circuit system interacts with the voice coil to realize the reciprocating vibration of the voice coil, which further drives the diaphragm to vibrate and produce sound. The micro speaker has a diaphragm on one side as the sound-emitting side. The sound module includes a shell and a sound-emitting unit arranged in the shell. The shell is provided with a sound outlet for the sound of the sound-emitting unit to be transmitted. In the prior art, the sound module uses an all-metal shell to maximize the volume of the rear sound cavity of the sound module, but most sound modules still need to use a plastic middle shell or a plastic middle shell + injection-molded steel sheet structure to support the sound-emitting unit, and further apply glue and seal to separate the front sound cavity and the rear sound cavity. The plastic middle shell structure not only has a high BOM cost and a complex process, but also has high requirements on the dimensional tolerance and assembly accuracy of the material due to the size limit of the module.

[0046] like Figures 1 to 6 As shown, the utility model provides a sound module 100, which includes a shell, a sound unit 20, a waterproof sealing ring 13 and a first bracket 14. The shell is made of metal, and a sound outlet 111 is provided on the shell. The sound unit 20 is arranged in the shell, and the sound unit 20 has a sound side 21 and a back-sound side 22 that are separated from each other. The sound side 21 faces the sound outlet 111. The waterproof sealing ring 13 is arranged in the shell and extends along the sound outlet 111. The waterproof sealing ring 13 is elastic and at least part of the waterproof sealing ring 13 is arranged between the sound side 21 and the shell. The first bracket 14 is located between the shell and the back-sound side 22. The first bracket 14 presses against the back-sound side 22 so that the sound unit 20 is pressed against the waterproof sealing ring 13.

[0047] In the present invention, the outer shell of the sound module 100 is made of metal material, which improves the outer shell strength and the heat dissipation efficiency of the sound module 100, and the outer shell of the metal material can be made thinner, which reduces the space occupied by the electronic product or maximizes the volume of the sound module 100 in a limited space. Furthermore, by arranging a waterproof sealing ring 13 between the sound side 21 of the sound unit 20 and the metal outer shell of the sound module 100, the waterproof sealing ring 13 extends along the sound outlet 111, and a first bracket 14 is arranged to press the sound unit 20 against the waterproof sealing ring 13, the use of a plastic middle shell to fix the sound unit 20 and the glue coating process required for the middle shell in the prior art are eliminated, the assembly process of the sound module 100 is simplified, and the space of the sound module 100 is maximized, thereby improving the acoustic performance of the sound module 100.

[0048] like Figure 2 and Figure 3 As shown, the waterproof sealing ring 13 includes a first portion disposed between the sound-generating side 21 and the housing. Figures 4 to 6 As shown, the waterproof sealing ring 13 includes a first portion disposed between the sound-emitting side 21 and the housing and a second portion disposed outside the housing. When the waterproof sealing ring 13 includes the second portion disposed outside the housing, the sound module 100 can be further pressed against the housing of the terminal device, thereby improving the waterproof performance between the sound module 100 and the terminal device.

[0049] In a specific embodiment, when the waterproof sealing ring 13 includes a first portion disposed between the sound-emitting side 21 and the housing and a second portion disposed outside the housing, the first portion and the second portion are an integrated structure. This can increase the bonding strength between the waterproof sealing ring 13 and the housing, improve the waterproof performance of the sound module 100, and improve the reliability of its structure.

[0050] Optionally, the waterproof sealing ring 13 is made of silicone material, and the waterproof sealing ring 13 can be bonded, injection molded or clamped to the housing.

[0051] In order to further enhance the bonding strength between the housing and the waterproof sealing ring 13 , a positioning hole is provided on the housing, and the waterproof sealing ring 13 is provided with a positioning portion located in the positioning hole. It can be understood that the positioning holes extend along the circumference of the sound outlet 111 and are evenly arranged.

[0052] In one embodiment, in the projection from the sound-emitting side 21 to the back-sounding side 22 of the sound-emitting unit 20, the inner edge of the waterproof sealing ring 13 between the sound-emitting side 21 and the housing is located outside the sound outlet 111. In this way, the sound outlet 111 will not be blocked by the waterproof sealing ring 13, so that the sound of the sound-emitting side 21 can be transmitted smoothly.

[0053] In one embodiment, the sound unit 20 has two opposite first sides and two second sides connecting the two first sides, and a conductive member 30 is provided on the first side for introducing external current into the voice coil of the sound unit 20. Optionally, a second elastic bracket 15 is provided between the first side and the housing, one side of the second bracket 15 is fixed to the inner wall of the housing, and the other side of the second bracket 15 is against the sound unit 20. The second bracket 15 can be a structure similar to a U-shape, a Z-shape, etc. When the sound module 100 realizes the electrical connection between the sound unit 20 and the external circuit through the conductive member 30, a pad connecting the conductive member 30 and the voice coil of the sound unit 20 is usually provided on the frame of the sound unit 20. The sound module 100 of the present application is provided with a conductive member 30 on the first side, and a corresponding setting space for the conductive member 30 is reserved between the first side and the housing, that is, there is a certain interval between the sound unit 20 and the housing, and the second bracket 15 can further prevent the sound unit 20 from shifting in the direction of the second side, thereby improving the reliability of the assembly of the sound unit 20.

[0054] The second bracket 15 can be made of metal, and the second bracket 15 is bonded or welded to the housing. Metal materials such as steel or high-strength aluminum have high strength and strong thermal conductivity, can provide strong support and facilitate heat transfer between the sound unit 20 and the housing, and improve the heat dissipation performance of the sound module 100.

[0055] The sound module 100 of the utility model eliminates the structure of the plastic middle shell supporting the sound unit 20 by setting a waterproof sealing ring 13 on the outer shell, so that the distance between the second side of the sound unit 20 and the side wall of the outer shell is less than or equal to 0.35mm, and can be further reduced to 0.05mm, thereby realizing a truly miniature sound module 100 design and occupying less space in the terminal device.

[0056] In other embodiments, a third bracket 16 may be further provided between the second side and the outer shell. The third bracket 16 is elastic, one side of the third bracket 16 is fixed to the inner wall of the outer shell, and the other side is against the sound unit 20. In this way, when the second side and the outer shell are separated by a certain distance, the third bracket 16 can be used to improve the assembly reliability of the sound unit 20 in the extension direction of the first side. The third bracket 16 can be a structure similar to a U-shape, a Z-shape, etc. The third bracket 16 can be made of metal, and the third bracket 16 is bonded or welded to the outer shell. Metal materials such as steel or high-strength aluminum have high strength and strong thermal conductivity, can provide strong support and facilitate heat transfer between the sound unit 20 and the outer shell, thereby improving the heat dissipation performance of the sound module 100.

[0057] As an example, a second bracket 15 with elasticity is provided between the first side and the housing, one side of the second bracket 15 is fixed to the inner wall of the housing, and the other side of the second bracket 15 abuts against the sound-emitting unit 20. Meanwhile, a third bracket 16 with elasticity can be provided between the second side and the housing, one side of the third bracket 16 is fixed to the inner wall of the housing, and the other side abuts against the sound-emitting unit 20. In this embodiment, the second bracket 15 can be a structure similar to a U-shape, a Z-shape, etc. The third bracket 16 can be a structure similar to a U-shape, a Z-shape, etc.

[0058] In one embodiment, the first bracket 14 includes a first support portion 141 connected to the back-sound side 22, a second support portion 143 connected to the housing, and a connection portion 142 connecting the first support portion 141 and the second support portion 143. Specifically, the first support portion 141 is provided in the central area of ​​the back-sound side 22, and the connection portion 142 and the second support portion 143 include two portions extending from both sides of the first support portion 141 toward the housing, so that the back-sound side 22 can be evenly stressed, so that the sound-emitting unit 20 can be further evenly pressed against the waterproof sealing ring 13, and the reliability of the seal between the two can be ensured. Optionally, the angle between the connection portion 142 and the first support portion 141 and the second support portion 143 is an obtuse angle.

[0059] like Figure 1 and Figure 3 As shown, the second support portion 143 has a flange 144 that is bent and extended to connect to the side surface of the housing. This arrangement can further improve the assembly reliability of the first bracket 14.

[0060] In the above embodiment, the first bracket 14 can be made of metal, and the first bracket 14 is bonded or welded to the housing. Metal materials such as steel or high-strength aluminum have high strength and strong thermal conductivity, can provide strong support and facilitate heat transfer between the sound unit 20 and the housing, and improve the heat dissipation performance of the sound module 100.

[0061] In one embodiment, the housing includes a metal upper shell 11 and a metal lower shell 12, the metal upper shell 11 is provided with a sound outlet 111, a rear sound cavity is formed between the sound unit 20, the metal upper shell 11, and the metal lower shell 12, a waterproof sealing ring 13 is provided on the upper shell 11, and a first bracket 14 is provided between the lower shell 12 and the sound unit 20. The sound module 100 of the utility model maximizes the volume of the rear sound cavity 40 by eliminating the use of a plastic middle shell, thereby improving the low-frequency performance of the sound module 100.

[0062] In order to further increase the virtual volume of the rear sound cavity 40 and improve the low-frequency performance of the sound module 100, the rear sound cavity is filled with sound-absorbing particles, and the outer shell is provided with a filling hole 121 and a breathable damping member 122 covering the filling hole 121.

[0063] The utility model also provides a terminal device, which includes the above-mentioned sound module 100. The specific structure of the sound module 100 refers to the above-mentioned embodiment. Since the terminal device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by all the technical solutions of all the above-mentioned embodiments, which will not be repeated here one by one.

[0064] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A sound module, characterized in that: The sound module includes A shell, the shell is made of metal and is provided with a sound outlet; A sound-emitting unit is disposed in the housing, the sound-emitting unit having a sound-emitting side and a back-sounding side that are separated from each other, and the sound-emitting side faces the sound outlet; An elastic waterproof sealing ring is arranged on the housing and extends along the sound outlet, and at least a part of the waterproof sealing ring is arranged between the sound-emitting side and the housing; The first bracket is located between the housing and the back-sound side, and the first bracket is pressed against the back-sound side so that the sound-emitting unit is pressed against the waterproof sealing ring.

2. The sound module according to claim 1, characterized in that: The waterproof sealing ring includes a first portion disposed between the sound-generating side and the housing.

3. The sound module according to claim 2, characterized in that: The waterproof sealing ring further comprises a second part arranged outside the housing, wherein the first part and the second part are an integral structure; And / or, a positioning hole is provided on the housing, and the waterproof sealing ring is provided with a positioning portion located in the positioning hole.

4. The sound module according to claim 1, characterized in that: The waterproof sealing ring is made of silicone; and / or the waterproof sealing ring is integrally injection-molded onto the housing; And / or, in the projection from the sound-emitting side to the back-sound side, the inner edge of the waterproof sealing ring located between the sound-emitting side and the housing is located outside the sound outlet.

5. The sound module according to claim 1, characterized in that: The sound-emitting unit has two opposite first sides and two second sides connecting the two first sides, wherein: A conductive member is provided on the first side; And / or, a second elastic bracket is provided between the first edge and the shell, one side of the second bracket is fixed to the inner wall of the shell, and the other side of the second bracket abuts against the sound unit; and / or, a second elastic bracket is provided between the first edge and the shell, one side of the second bracket is fixed to the inner wall of the shell, and the other side of the second bracket abuts against the sound unit, and the second bracket includes at least one U-shaped structure.

6. The sound module according to claim 5, characterized in that: A third bracket with elasticity is provided between the second side and the housing, one side of the third bracket is fixed to the inner wall of the housing, and the other side of the third bracket abuts against the sound unit; And / or, a third bracket with elasticity is provided between the second side and the shell, one side of the third bracket is fixed to the inner wall of the shell, the other side of the third bracket abuts against the sound unit, and the third bracket includes at least one U-shaped structure; And / or, the distance between the second side and the side wall of the shell is ≤0.35 mm.

7. The sound module according to any one of claims 1 to 6, characterized in that: The first bracket includes a first supporting portion connected to the acoustically-rear side, a second supporting portion connected to the housing, and a connecting portion connecting the first supporting portion and the second supporting portion.

8. The sound module according to claim 7, characterized in that: The angles between the connecting portion and the first supporting portion and the second supporting portion are obtuse angles; And / or, two second supporting parts are provided, respectively located on both sides of the first supporting part; And / or, two second supporting parts are provided, which are respectively located on both sides of the first supporting part, and the second supporting part has a flange that is bent and extended to be connected to the side surface of the shell; And / or, the first bracket is made of metal, and the first bracket is connected to the shell by welding.

9. The sound module according to claim 1, characterized in that: The housing comprises a metal upper shell and a metal lower shell, the metal upper shell is provided with the sound outlet, and a rear sound cavity is formed between the sound-emitting unit, the metal upper shell and the metal lower shell; And / or, a rear sound cavity is formed between the sound-emitting unit and the shell, the rear sound cavity is filled with sound-absorbing particles, and the shell is provided with a filling hole and a breathable damping member covering the filling hole.

10. A terminal device, characterized in that: Comprising a sound module as described in any one of claims 1 to 9.

Images