Loudspeaker module and electronic equipment

Abstract

The utility model belongs to the technical field of electro-acoustic conversion, and particularly relates to a loudspeaker module and electronic equipment, the loudspeaker module comprises a housing, a breathable isolation wall and a sound production monomer, the housing is internally provided with an accommodating cavity, a first side wall and a second side wall, and the first side wall and the second side wall are oppositely arranged; the ventilation isolation wall is located in the containing cavity and comprises a ventilation part and a connecting part connected to one end of the ventilation part, the connecting part is connected to the first side wall of the shell, the ventilation part abuts against the second side wall, the ventilation isolation wall divides the containing cavity into a first cavity and a second cavity, and the first cavity is used for being filled with sound absorption particles; the sounding single body is accommodated in the second cavity. According to the structure, the sound absorption particles and the sound production single body can be separated by arranging the breathable separation wall, so that the air flow in the accommodating cavity is smooth, and meanwhile, the filling space of the sound absorption particles can be increased, so that the sound quality effect of the loudspeaker module is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electroacoustic conversion, and specifically relates to a loudspeaker module and electronic equipment. Background Art

[0002] With the rapid development of electronic equipment, higher requirements are placed on the performance of sound-generating devices, requiring larger back cavities and better performance. However, contradictory to each other, electronic products are also required to be as light and thin as possible, so the expansion of the sound cavity space of the speaker is limited, and even needs to be compressed. Therefore, filling the acoustic back cavity of the sound-generating device with sound-absorbing particles is currently the most commonly used expansion method. There are two main methods for filling sound-absorbing particles: partial filling and full filling. The full filling solution cannot limit the flow of sound-absorbing particles, and then there is the problem of sound-absorbing particles blocking the sound-generating device; partial filling mostly uses hot-melt mesh packaging or plug-in board packaging, but when used in ultra-thin spaces, the main problems are as follows:

[0003] 1) Due to the limited height space, the hot melt mesh solution further occupies the height space, resulting in a reduction in the expansion volume;

[0004] 2) Due to limited height and space, the plug-in board solution has the problem of insufficient air permeability and cannot meet application requirements.

[0005] Therefore, in view of the above shortcomings, the present utility model is proposed. Utility Model Content

[0006] The purpose of the present invention is to provide a speaker module and an electronic device to at least partially solve the above technical problems.

[0007] The utility model provides a speaker module, comprising:

[0008] A shell, wherein the shell has a receiving cavity and a first side wall and a second side wall that are oppositely arranged;

[0009] a breathable isolation wall, located in the receiving cavity, and comprising a breathable portion and a connecting portion connected to one end of the breathable portion, wherein the connecting portion is connected to the first side wall of the shell, and the breathable portion abuts against the second side wall, and the breathable isolation wall divides the receiving cavity into a first cavity and a second cavity, wherein the first cavity is used to fill sound-absorbing particles;

[0010] A sound-generating unit is housed in the second cavity.

[0011] The speaker module provided by the utility model may also have the following additional technical features:

[0012] In a specific embodiment of the present utility model, the air-permeable isolation wall is made of a metal mesh or an air-permeable isolation piece;

[0013] And / or, the breathable isolation wall is formed as an integral bent molded part or an integral injection molded part.

[0014] In a specific implementation manner of the utility model, the cross-section of the ventilating portion is U-shaped, and the connecting portion is a skirt formed at the U-shaped opening end of the ventilating portion.

[0015] In a specific embodiment of the utility model, a step structure is formed on one side of the air permeable portion away from the connecting portion and adjacent to the second cavity, and the step structure includes a first edge abutting against the second side wall and a second edge spaced apart from the second side wall.

[0016] In a specific implementation manner of the present invention, the skirt is connected to the first side wall by adhesive bonding; or, the skirt is connected to the first side wall by integral injection molding.

[0017] In a specific implementation manner of the utility model, the air-permeable isolation wall is arranged in a straight line shape, an L shape, an S shape or a wavy line shape.

[0018] In a specific embodiment of the utility model, the shell is further provided with a filling hole and a sealing sheet for sealing the filling hole, the filling hole is communicated with the first cavity and is used for filling sound-absorbing particles.

[0019] In a specific embodiment of the utility model, the shell includes an upper shell having an open cavity and a lower shell covering the open end of the upper shell to form a receiving cavity, the first side wall is located on the upper shell, and the second side wall is located on the lower shell.

[0020] In a specific embodiment of the present invention, the upper shell is also provided with a through hole, the sound-emitting surface of the sound-emitting unit is arranged corresponding to the through hole, the first side wall of the upper shell is formed with a first limiting portion surrounding the through hole, the lower shell is concave to form a second limiting portion corresponding to the first limiting portion, and the two opposite side surfaces of the sound-emitting unit are respectively arranged in the first limiting portion and the second limiting portion.

[0021] A second aspect of the present invention further provides an electronic device, further comprising the speaker module described in any one of the above items.

[0022] The speaker module provided by the utility model is provided with a sound-generating unit in the receiving cavity of the shell, so that the speaker module has a sound-generating function; and sound-absorbing particles are provided in the back cavity formed by the sound-generating unit and the shell, so that the sound quality of the speaker module can be guaranteed or even improved when the expansion of the back cavity space is limited or even compressed. At the same time, a breathable isolation wall is provided to separate the sound-generating unit and the sound-absorbing particles, thereby ensuring the flowability of the gas in the back cavity. In addition, based on the connection method of the breathable isolation wall and the shell, not only the occupation of the height space of the back cavity is reduced, but also the breathable area is guaranteed, and the patency of the gas in the back cavity is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A cross-sectional view of a speaker module in an embodiment of the utility model;

[0025] Figure 2 This is a structural exploded view of the speaker module in the embodiment of the utility model;

[0026] Figure 3 It is a top view of the structure of the speaker module in the embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 100-speaker module;

[0029] 10-shell, 11-upper shell, 12-lower shell, 13-through hole, 14-filling hole, 15-first limiting part, 16-second limiting part;

[0030] 20-sound unit;

[0031] 30-breathable isolation wall, 31-breathable portion, 32-connecting portion, 33-step structure. DETAILED DESCRIPTION

[0032] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0033] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0034] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0035] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0036] like Figure 1-3 As shown, the utility model provides a speaker module 100, which is used in electronic devices. Specifically, the electronic device can be a mobile phone, a tablet computer, or other device with an audio playback function.

[0037] In this embodiment, the speaker module 100 includes a shell 10, a breathable isolation wall 30 and a sound-emitting unit 20, wherein the shell 10 has a receiving cavity and a first side wall and a second side wall arranged opposite to each other; the breathable isolation wall 30 is located in the receiving cavity and includes a breathable portion 31 and a connecting portion 32 connected to one end of the breathable portion 31, the connecting portion 32 is connected to the first side wall of the shell 10, and the breathable portion 31 abuts against the second side wall. The breathable isolation wall 30 divides the receiving cavity into a first cavity and a second cavity, and the first cavity is used to fill sound-absorbing particles; the sound-emitting unit 20 is accommodated in the second cavity.

[0038] The housing 10 is a mounting and protection structure for the sound unit 20, and can be specifically configured as a shell, an outer cover, a box or other structure with a receiving cavity, which is not limited here. The housing 10 is formed with a first side wall and a second side wall that are oppositely arranged, and the first side wall and the second side wall are partial sides that enclose the receiving cavity.

[0039] The air-permeable isolation wall 30 includes an air-permeable portion 31 and a connecting portion 32 provided at one end of the air-permeable portion 31, and the connecting portion 32 of the air-permeable isolation wall 30 is connected to the first side wall, and the air-permeable portion 31 is abutted against the second side wall, so that a wall structure is formed in the receiving cavity, and the receiving cavity can be divided into a first cavity and a second cavity, and the gas between the first cavity and the second cavity can be exchanged with each other. The first cavity is filled with sound-absorbing particles.

[0040] The sound-generating unit 20 is a device with a sound-generating function, which generally includes an outer frame and a vibration system and a magnetic circuit system contained in the outer frame, wherein the magnetic circuit system includes a magnetic yoke and a central magnet and a side magnet arranged on the side of the magnetic yoke facing the outer frame, wherein the side magnet is arranged around the central magnet, and the magnetic circuit system is connected to one side of the outer frame through the magnetic yoke or the side magnet, so that the magnetic gap formed between the side magnet and the central magnet is arranged facing the vibration system. The vibration system includes a diaphragm and a voice coil connected to the side of the diaphragm, wherein the side of the diaphragm connected to the voice coil is connected to the other side of the outer frame relative to the magnetic circuit system, so that the other end of the voice coil is inserted into the magnetic gap formed by the magnetic circuit system, so that when used, the energized voice coil can be driven by the magnetic circuit system to vibrate in the magnetic gap to drive the diaphragm to vibrate and generate sound.

[0041] The sound unit 20 is arranged in the receiving cavity, and specifically in the second cavity, so that the remaining parts of the first cavity and the second cavity will form the back cavity of the sound unit 20, and due to the separation of the breathable isolation wall 30, the sound unit 20 can be isolated from the sound-absorbing material. The sound-absorbing particles can increase the virtual back cavity of the speaker module 100, thereby improving the low-frequency sound effect of the speaker module 100.

[0042] The speaker module 100 provided in the present embodiment has a sound-emitting function by disposing a sound-emitting unit 20 in the receiving cavity of the shell 10; a breathable isolation wall 30 is disposed in the receiving cavity and is connected only to the first side wall to divide the receiving cavity into a first cavity and a second cavity, and the sound-absorbing particles are disposed in the first cavity and the sound-emitting unit 20 is disposed in the second cavity. In this way, not only can the sound-absorbing particles be used to expand the back cavity of the speaker module 100, thereby ensuring or even improving the sound quality of the speaker module 100, but the sound-absorbing particles and the sound-emitting unit 20 can also be separated, thereby ensuring the patency of the gas in the back cavity of the speaker module 100. In addition, since the breathable isolation wall 30 is connected to the first side wall only by the connecting portion 32, the occupation of the height space of the back cavity can be reduced, thereby significantly increasing the filling space of the sound-absorbing particles.

[0043] In one embodiment, the cross section of the air permeable portion 31 is U-shaped, and the connecting portion 32 is a skirt formed at the U-shaped opening end of the air permeable portion 31. Such a configuration allows the air permeable isolation wall 30 to be fixed and supported in the housing 10 only by connecting it to the housing 10 through the connecting portion 32, thereby playing the role of isolation and ventilation.

[0044] In one embodiment, the air-permeable isolation wall 30 is made of a metal mesh or an air-permeable isolation piece. The metal mesh and the air-permeable isolation piece not only have good air permeability, but also have good plasticity, so that the air-permeable isolation wall 30 can be molded according to its shape characteristics, thereby ensuring the air permeability and structural stability of the air-permeable isolation wall 30.

[0045] In one embodiment, the air-permeable isolation wall 30 is formed as an integral bending molded part or an integral injection molded part. By forming the air-permeable part 31 and the connecting part 32 of the air-permeable isolation wall 30 as an integral structure, the processing of the air-permeable isolation wall 30 can be facilitated, thereby reducing its processing cost.

[0046] In one embodiment, a step structure 33 is formed on one side of the air permeable portion 31 away from the connecting portion 32 and adjacent to the second cavity, and the step structure 33 includes a first side that stops at the second side wall and a second side that is spaced apart from the second side wall. That is, a step structure 33 is formed on one side of the air permeable isolation wall 30 close to the sound absorbing particles, and the first side of the step structure 33 stops at the second side wall, and a gap is formed between the second side wall and the second side wall, so that the sound absorbing particles can be filled into the gap between the second side and the second side wall, that is, the contact area between the air permeable isolation wall 30 and the sound absorbing particles is increased, thereby improving the smoothness of the air flow. At the same time, the step 33 can further improve the structural stability of the air permeable portion 31.

[0047] In one embodiment, the air-permeable isolation wall 30 is arranged in a straight line, L-shaped, S-shaped or wavy line along the length direction, so as to improve the adaptability of the air-permeable isolation wall 30 to the speaker module 100 and enable it to be applied to speaker modules 100 of different shapes.

[0048] In one embodiment, the housing 10 is further provided with a filling hole 14 and a sealing sheet for sealing the filling hole 14. The filling hole 14 is communicated with the first cavity and is used for filling the sound-absorbing particles. The filling hole 14 is used to fill the sound-absorbing particles into the encapsulated housing 10, thereby achieving the effect of full filling of the sound-absorbing particles. The sealing sheet is used to seal the filling hole 14 after the filling is completed. Specifically, the number of the filling holes 14 can be set to one or two, so that the uniformity of the sound-absorbing particles in the second cavity can be further improved.

[0049] In one embodiment, the housing 10 includes an upper housing 11 having an open cavity and a lower housing 12 covering the open end of the upper housing 11 to form a receiving cavity, the first side wall is located on the upper housing 11, and the second side wall is located on the lower housing 12. Such a configuration can facilitate the assembly of components such as the air permeable isolation wall 30 and the sound unit 20, making the assembly process of the speaker module 100 simpler.

[0050] In one embodiment, the upper shell 11 is further provided with a through hole 13, and the sound-emitting surface of the sound-emitting unit 20 is arranged corresponding to the through hole 13. By arranging the through hole 13 corresponding to the sound-emitting surface of the sound-emitting unit 20 on the upper shell 11, the sound emitted by the sound-emitting unit 20 can be directly transmitted outward through the through hole 13, forming a sound-emitting structure for positive sound emission, thereby achieving a height reduction of the speaker module 100.

[0051] In one embodiment, the first side wall of the upper shell 11 is formed with a first limiting portion 15 surrounding the through hole 13, and the lower shell 12 is recessed to form a second limiting portion 16 corresponding to the first limiting portion 15, and the two opposite side surfaces of the sound unit 20 are respectively arranged in the first limiting portion 15 and the second limiting portion 16.

[0052] The utility model also provides an electronic device, which includes the above-mentioned speaker module 100. The specific structure of the speaker module 100 refers to the above-mentioned embodiment. Since the electronic device has the speaker module 100 described in all the above-mentioned embodiments, it also has at least the beneficial effects of the above-mentioned speaker module 100, which will not be repeated here one by one.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A speaker module, characterized in that: include: A shell, wherein the shell has a receiving cavity and a first side wall and a second side wall which are arranged opposite to each other; a breathable isolation wall, located in the receiving cavity, and comprising a breathable portion and a connecting portion connected to one end of the breathable portion, wherein the connecting portion is connected to the first side wall of the shell, and the breathable portion abuts against the second side wall, and the breathable isolation wall divides the receiving cavity into a first cavity and a second cavity, wherein the first cavity is used to fill sound-absorbing particles; A sound-generating unit is housed in the second cavity.

2. The speaker module according to claim 1, characterized in that: The air-permeable isolation wall is made of a metal mesh or an air-permeable isolation piece; And / or, the breathable isolation wall is formed as an integral bent molded part or an integral injection molded part.

3. The speaker module according to claim 1, characterized in that: The cross section of the ventilation portion is U-shaped, and the connecting portion is a skirt formed at the U-shaped opening end of the ventilation portion.

4. The speaker module according to claim 3, characterized in that: A step structure is formed at one end of the air permeable portion away from the connecting portion and adjacent to the second cavity. The step structure includes a first edge abutting against the second side wall and a second edge spaced apart from the second side wall.

5. The speaker module according to claim 3, characterized in that: The skirt is connected to the first side wall by adhesive bonding; or, the skirt is connected to the first side wall by integral injection molding.

6. The speaker module according to claim 1, characterized in that: The air-permeable isolation wall is arranged in a straight line shape, an L shape, an S shape or a wavy line shape.

7. The speaker module according to claim 1, characterized in that: The shell is also provided with a filling hole and a sealing sheet for sealing the filling hole, the filling hole is communicated with the first cavity and is used for filling sound-absorbing particles.

8. The speaker module according to claim 1, characterized in that: The shell comprises an upper shell with an open cavity and a lower shell covering the open end of the upper shell to form a receiving cavity, the first side wall is located on the upper shell, and the second side wall is located on the lower shell.

9. The speaker module according to claim 8, characterized in that: The upper shell is also provided with a through hole, and the sound-emitting surface of the sound-emitting unit is arranged corresponding to the through hole. The first side wall of the upper shell is formed with a first limiting portion surrounding the through hole, and the lower shell is concave to form a second limiting portion corresponding to the first limiting portion, and the two opposite side surfaces of the sound-emitting unit are respectively arranged in the first limiting portion and the second limiting portion.

10. An electronic device, characterized in that: It also includes the speaker module described in any one of claims 1-9.

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