Loudspeaker module and electronic equipment

Abstract

The utility model discloses a loudspeaker module and an electronic device, the loudspeaker module comprises a housing, an expansion hole and a cover plate, the housing comprises a base body and an enclosing wall, the base body and the enclosing wall are connected to form a first area used for forming a rear cavity, the base body is provided with a volume block, and the volume block is located at the outer side of the enclosing wall and is connected with the enclosing wall; the expansion hole comprises a communicating hole formed in the enclosing wall and a volume hole formed in the volume block, the communicating hole communicates with the first area and the volume hole, the volume block is provided with a window communicating with the volume hole, and the caliber of the communicating position of the window and the volume hole is larger than or equal to the caliber of other areas of the volume hole; the cover plate is arranged at the window and seals the window. According to the loudspeaker module, on the basis that the overall size of the loudspeaker module is not changed, the size of the rear cavity of the loudspeaker module is increased, and the acoustic performance of the loudspeaker module is improved. Moreover, in the injection molding process of the shell, the volume hole can be directly molded, so that the volume of the volume hole in the volume block can be set to be larger.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a loudspeaker module and electronic equipment. Background Art

[0002] As electronic devices are constantly updated, the performance requirements of electronic devices are getting higher and higher, and the size of electronic devices is getting smaller and smaller. The speaker module is also shifting from the original large size to the small size.

[0003] When the volume of the back cavity is not enough, traditional speaker modules often choose to design injection-molded steel sheets to increase the volume of the cavity, but sometimes even the steel sheet design cannot meet the expected back cavity volume requirements. In the prior art, the shell of some speaker modules has a volume block, which can be a structure for supporting and installing other devices, a structure for increasing the installation area, a structure for connecting other devices, or a structure that plays other roles. Since the volume block is solid, the increase in the volume of the back cavity can be solved by seeking a solution from the volume block. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a loudspeaker module with a large rear cavity volume and an electronic device with the loudspeaker module.

[0005] In order to solve the above technical problems, the first technical solution adopted by the utility model is: a speaker module, comprising:

[0006] A shell, the shell comprising a base and a surrounding wall, the base and the surrounding wall are connected to form a first area for forming a rear cavity, the base has a volume block, the volume block is located outside the surrounding wall and connected to the surrounding wall;

[0007] Expansion holes, the expansion holes comprising a connecting hole provided in the enclosure and a volume hole provided on the volume block, the connecting hole connecting the first area with the volume hole, a window connecting the volume hole is provided on the volume block, and the caliber of the place where the window connects with the volume hole is greater than or equal to the caliber of other areas of the volume hole;

[0008] A cover plate is arranged at the window and closes the window.

[0009] In one embodiment, the cover plate is adhesively connected or ultrasonically welded to the volume block.

[0010] In one embodiment, the housing is an injection-molded body; or, the housing is an insert-molded structure having a steel sheet.

[0011] In one embodiment, the first region includes a connecting section corresponding to and connected to the connecting hole, and a width of the connecting section along the X-axis direction is greater than a length of the connecting hole along the X-axis direction.

[0012] In one embodiment, the length of the communication hole along the X-axis direction is smaller than the width of the volume hole along the X-axis direction.

[0013] In one embodiment, the number of the expansion holes is one or more.

[0014] In one embodiment, a mounting hole is provided on the volume block.

[0015] In one embodiment, an end surface of the wall away from the base is a mounting surface.

[0016] In one embodiment, a step portion is formed at the place where the window communicates with the volume hole, and at least a partial area of ​​the cover plate is accommodated in the step portion.

[0017] In order to solve the above technical problems, the second technical solution adopted by the present invention is: an electronic device includes the above speaker module.

[0018] The beneficial effect of the utility model is that the volume block of the shell of the speaker module has a volume hole connected to the back cavity of the speaker module, which increases the volume of the back cavity of the speaker module without changing the overall volume of the speaker module, thereby improving the acoustic performance of the speaker module. Moreover, during the process of injection molding of the shell, the volume hole can be directly molded, so that the volume of the volume hole in the volume block can be set larger, so that the volume block can be more fully utilized, thereby increasing the back cavity volume of the speaker module to a greater extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 This is a schematic structural diagram of a speaker module according to Embodiment 1 of the present utility model;

[0021] Figure 2 A cross-sectional view of the speaker module of the first embodiment of the present invention Figure 1 ;

[0022] Figure 3 A cross-sectional view of the speaker module of the first embodiment of the present invention Figure 2 .

[0023] Description of Figure Numbers:

[0024] 1. Speaker unit;

[0025] 2. housing; 21. base; 22. wall; 221. mounting surface; 23. first area; 231. connecting section; 24. volume block; 241. mounting hole; 242. step portion;

[0026] 3. Expansion hole; 31. Connecting hole; 32. Volume hole;

[0027] 4. Cover plate;

[0028] 5. Steel sheet. DETAILED DESCRIPTION

[0029] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0030] 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.

[0031] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, 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.

[0033] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Embodiment 1

[0036] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: an electronic device having a sound-generating function, including but not limited to a mobile phone, a computer, a smart watch, a game controller, a walkie-talkie, etc.

[0037] The speaker module comprises a housing 2 and a speaker unit 1 fixedly mounted on the housing 2, wherein the housing 2 comprises a base 21 and a surrounding wall 22, wherein the base 21 is connected with the surrounding wall 22 to form a first area 23 for forming a rear cavity, and the base 21 has a volume block 24, wherein the volume block 24 is located outside the surrounding wall 22 and connected to the surrounding wall 22;

[0038] It also includes an expansion hole 3 and a cover plate 4, the expansion hole 3 includes a connecting hole 31 arranged in the wall 22 and a volume hole 32 arranged on the volume block 24, the connecting hole 31 connects the first area 23 and the volume hole 32, the volume block 24 is provided with a window connected to the volume hole 32, the caliber of the window connecting with the volume hole 32 is greater than or equal to the caliber of other areas of the volume hole 32, the cover plate 4 is arranged at the window and closes the window, and optionally, the cover plate 4 is adhesively connected or ultrasonically welded to the volume block 24.

[0039] Optionally, the base 21 has a window, the speaker unit 1 is arranged corresponding to the window, the speaker unit 1 is sealed and connected to the edge of the window, and the sound-emitting surface of the speaker unit 1 is exposed through the window.

[0040] The housing 2 is an injection-molded body; or, the housing 2 is an insert-molded structure having a steel sheet 5. Since the caliber of the portion where the window is connected to the volume hole 32 is greater than or equal to the caliber of other regions of the volume hole 32, the volume hole 32 can be directly formed by the fixed structure of the injection mold.

[0041] In a specific product, sometimes the width of the position where the first area 23 connects to the connecting hole 31 is not enough, so that when the injection mold adopts a slider structure or a core pulling structure to form the expansion hole 3, the depth of the expansion hole 3 cannot be processed deep enough, resulting in the volume block 24 not being fully utilized, so that the volume of the back cavity of the speaker module cannot be maximized. Therefore, in this embodiment, the expansion hole 3 is divided into two parts, one part is the connecting hole 31, and the other part is the volume hole 32 connected to the window. In this way, the slider structure or the core pulling structure of the injection mold only needs to form the connecting hole 31, and the volume block 24 or a part of the first area 23 can be formed by the fixed structure of the injection mold, so that the volume block 24 can be more fully utilized. It is easy to understand that when a part of the first area 23 is formed by the fixed structure of the injection mold, the slider structure or the core pulling structure of the injection mold forms the connecting hole 31 from the volume hole 32. Specifically in the product, the first area 23 includes a connecting section 231 corresponding to and connected to the connecting hole 31, and the width of the connecting section 231 along the X-axis direction is greater than the length of the connecting hole 31 along the X-axis direction. In this way, the slider structure or core pulling structure of the injection mold can form the connecting hole 31 from the connecting section 231; or, the length of the connecting hole 31 along the X-axis direction is less than the width of the volume hole 32 along the X-axis direction. In this way, the slider structure or core pulling structure of the injection mold can form the connecting hole 31 from the volume hole 32.

[0042] The number of the expansion holes 3 is one or more, that is, the number of the expansion holes 3 can be set according to actual needs.

[0043] The volume block 24 can be a structure for supporting and installing other devices, or a structure for increasing the area of ​​the mounting surface 221, or a structure for connecting other devices. For example, in this embodiment, the volume block 24 is provided with a mounting hole 241, and the housing 2 can be connected to other structural parts in the electronic device by means of fasteners passing through the mounting hole 241.

[0044] The end surface of the wall 22 away from the base 21 is a mounting surface 221. Optionally, the speaker module is a half-cavity speaker module. In the electronic device, the mounting surface 221 contacts and seals with the middle frame or other structural parts of the electronic device. In detail, the mounting surface 221 forms a continuous and uninterrupted ring frame area with the middle frame or other structural parts of the electronic device.

[0045] To facilitate the positioning and installation of the cover plate 4 and reduce the risk of the cover plate 4 being lifted up by foreign objects, optionally, a step portion 242 is formed at the connection between the window and the volume hole 32 , and at least a partial area of ​​the cover plate 4 is accommodated in the step portion 242 .

[0046] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention 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 present invention.

Claims

1. A speaker module, characterized in that: include A shell, the shell comprising a base and a surrounding wall, the base and the surrounding wall are connected to form a first area for forming a rear cavity, the base has a volume block, the volume block is located outside the surrounding wall and connected to the surrounding wall; Expansion holes, the expansion holes comprising a connecting hole provided in the enclosure and a volume hole provided on the volume block, the connecting hole connecting the first area with the volume hole, a window connecting the volume hole is provided on the volume block, and the caliber of the place where the window connects with the volume hole is greater than or equal to the caliber of other areas of the volume hole; A cover plate is arranged at the window and closes the window.

2. The speaker module according to claim 1, characterized in that: The cover plate is connected to the volume block by adhesive bonding or ultrasonic welding.

3. The speaker module according to claim 1, characterized in that: The shell is an injection-molded body; or, the shell is an insert-molded structure having a steel sheet.

4. The speaker module according to claim 3, characterized in that: The first region includes a communication section corresponding to and communicating with the communication hole, and a width of the communication section along the X-axis direction is greater than a length of the communication hole along the X-axis direction.

5. The speaker module according to claim 3, characterized in that: A length of the communication hole along the X-axis direction is smaller than a width of the volume hole along the X-axis direction.

6. The speaker module according to claim 1, characterized in that: The number of the expansion holes is one or more.

7. The speaker module according to claim 1, characterized in that: The volume block is provided with a mounting hole.

8. The speaker module according to claim 1, characterized in that: The end surface of the enclosure away from the base is a mounting surface.

9. The speaker module according to claim 1, characterized in that: A step portion is formed at the place where the window is connected to the volume hole, and at least a part of the cover plate is accommodated in the step portion.

10. An electronic device, characterized in that: A speaker module comprising any one of claims 1-9.

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