Front cavity cover plate and loudspeaker module

Abstract

The utility model relates to the technical field of loudspeakers, and discloses a front cavity cover plate and a loudspeaker module. The front cavity cover plate comprises a cover plate body, a first buffer part and a second buffer part, a containing hole is formed in the cover plate body, the containing hole is filled with the first buffer part, and the second buffer part is fixedly arranged on one side of the cover plate body. According to the front cavity cover plate, the accommodating hole is formed in the cover plate body, and the accommodating hole is filled with the first buffer piece, so that when a loudspeaker works, the first buffer piece can absorb kinetic energy transmitted to the cover plate body by sound waves, and the second buffer piece is arranged on one side of the cover plate body, so that the sound waves can be effectively absorbed. According to the front cavity cover plate, the second buffer piece can reduce vibration transmission to the outside through the second buffer piece, the first buffer piece and the cover plate body can be buffered, resonance of the cover plate body is further reduced, and the problem that the front cavity cover plate generates resonance is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of loudspeakers, and particularly relates to a front cavity cover plate and a loudspeaker module. BACKGROUND

[0002] With the increasing demand of users for the thinness of mobile devices, the volume of the loudspeaker module in the mobile device is also required to be smaller and smaller. In the related art, reducing the thickness of the shell of the loudspeaker module can reduce the overall weight of the loudspeaker module. However, the too-thin thickness of the shell of the loudspeaker module causes the front cavity cover plate to resonate when the loudspeaker module is working, resulting in the damage of the sound quality of the loudspeaker module.

[0003] Therefore, it is necessary to improve the prior art.

[0004] The above information is given as background information only to assist with an understanding of the present disclosure, and should not be taken as an acknowledgement that any of the above information constitutes prior art with respect to the present disclosure. UTILITY MODEL CONTENT

[0005] Embodiments of the present application provide a front cavity cover plate and a loudspeaker module to solve the problem of resonance of the front cavity cover plate.

[0006] In a first aspect, the embodiments of the present application provide a front cavity cover plate, comprising a cover plate body, a first buffer and a second buffer, a containing hole is formed on the cover plate body, the first buffer is filled in the containing hole, and the second buffer is fixedly arranged on one side of the cover plate body.

[0007] In a possible implementation, the second buffer covers one end of the containing hole, and the second buffer is fixedly connected with the first buffer.

[0008] In a possible implementation, the front cavity cover plate further comprises a first fixing member, the first fixing member is arranged on the side of the cover plate body close to the second buffer, the first fixing member covers one end of the containing hole, and the first fixing member connects the first buffer and the second buffer.

[0009] In a possible implementation, the front cavity cover plate further comprises a second fixing member, the second fixing member is arranged on the side of the cover plate body away from the first fixing member, the second fixing member covers the other end of the containing hole, and the second fixing member is fixedly connected with the side of the first buffer away from the first fixing member.

[0010] In a possible implementation, the front cavity cover plate further comprises a reinforcing rib, and the reinforcing rib is arranged on the side of the cover plate body close to the second buffer.

[0011] In a possible implementation, the reinforcing rib comprises a reinforcing frame, the accommodating hole is located in the reinforcing frame, and the second buffer member abuts against an inner frame surface of the reinforcing frame.

[0012] In a possible implementation, the reinforcing rib further comprises a reinforcing block, one end of the reinforcing block is fixedly connected with the reinforcing frame, and the other end extends to the edge of the cover plate body.

[0013] In a possible implementation, the front cavity cover plate further comprises a second fixing member and a third buffer member, both the second fixing member and the third buffer member are arranged in the reinforcing frame, the second fixing member is fixedly connected with the first buffer member, and the third buffer member connects the second fixing member and the reinforcing frame.

[0014] In a possible implementation, the front cavity cover plate further comprises a fixing column for reinforcing the cover plate body, the fixing column is arranged on one side of the cover plate body close to the second buffer member, and a spherical surface is arranged on a side of the fixing column away from the cover plate body.

[0015] In a second aspect, the embodiments of the present application further provide a loudspeaker module, which comprises the front cavity cover plate according to any one of the above.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The front cavity cover plate provided by the embodiments of the present application has the following beneficial effects: the accommodating hole is arranged on the cover plate body, and the first buffer member is filled in the accommodating hole, so that the first buffer member can absorb kinetic energy of sound waves transmitted to the cover plate body when the loudspeaker is working; the second buffer member is arranged on one side of the cover plate body, so that the second buffer member not only reduces the transmission of vibration to the outside through the second buffer member, but also buffers the first buffer member and the cover plate body, further reduces resonance of the cover plate body, and solves the problem of resonance of the front cavity cover plate. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] In order to more completely understand the present application and its beneficial effects, the following will be described with reference to the drawings. In the following description, the same reference numerals represent the same parts.

[0020] Figure 1 The first structure diagram of the front cavity cover plate provided by the embodiments of the present application is shown.

[0021] Figure 2 The first structure of the front cavity cover plate provided in the embodiment of the present application is shown in the exploded view.

[0022] Figure 3 The second structure of the front cavity cover plate provided in the embodiment of the present application is shown in the schematic view.

[0023] Figure 4 The second structure of the front cavity cover plate provided in the embodiment of the present application is shown in the sectional view.

[0024] In the figure: 1, cover plate body; 11, accommodating hole; 2, first buffer; 3, second buffer; 4, first fixing member; 5, second fixing member; 6, reinforcing rib; 61, reinforcing frame; 62, reinforcing block; 7, third buffer; 8, fixing column. DETAILED DESCRIPTION

[0025] In order to describe the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved of the present application in detail, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described in this paper are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0026] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features.

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application.

[0028] The front cavity cover plate and the loudspeaker module are provided in the embodiments of the present application to solve the problem of resonance of the front cavity cover plate. The following will be described in combination with the drawings.

[0029] Please refer to Figure 1 and Figure 2 A front cavity cover plate, comprising a cover plate body 1, a first buffer 2 and a second buffer 3, the cover plate body 1 is provided with an accommodating hole 11, the first buffer 2 is filled in the accommodating hole 11, and the second buffer 3 is fixedly arranged on one side of the cover plate body 1.

[0030] By opening a receiving hole 11 on the cover plate body 1 and filling the receiving hole 11 with a first buffer 2, the first buffer 2 can absorb the kinetic energy of the sound waves transmitted to the cover plate body 1 when the speaker is working. By setting a second buffer 3 on one side of the cover plate body 1, the second buffer 3 can not only reduce the vibration transmission to the outside through the second buffer 3, but also buffer the first buffer 2 and the cover plate body 1, further reducing the resonance of the cover plate body 1 and solving the problem of resonance of the front cavity cover plate.

[0031] Please see Figure 1 and Figure 2 In this embodiment, both the first buffer 2 and the second buffer 3 are foam, and the compression ratios of both the first buffer 2 and the second buffer 3 are greater than 50% to achieve good vibration absorption of the cover plate body 1. In some embodiments of this application, the first buffer 2 is plastic, the second buffer 3 is foam, the second buffer 3 covers one end of the receiving hole 11, and the second buffer 3 is bonded and fixed to the first buffer 2 so that the second buffer 3 can directly absorb the vibration on the cover plate body 1 and the first buffer 2, thereby reducing the resonance of the cover plate body 1.

[0032] Please see Figure 1 and Figure 2 The front cavity cover plate includes a first fixing member 4 and a second fixing member 5. The first fixing member 4 is disposed on the side of the cover plate body 1 near the second buffer member 3, and covers one end of the receiving hole 11. The first fixing member 4 is fixedly connected to the first buffer member 2 and the second buffer member 3. The second fixing member 5 is disposed on the side of the cover plate body 1 away from the first fixing member 4, and covers the other end of the receiving hole 11. The second fixing member 5 is fixedly connected to the side of the first buffer member 2 away from the first fixing member 4. In this embodiment, both the first fixing member 4 and the second fixing member 5 are thin steel sheets. The arrangement of the first fixing member 4 and the second fixing member 5 can compensate for the structural strength loss caused by the opening on the cover plate body 1 and the filling of the first buffer member 2 in the receiving hole 11, thereby improving the structural strength of the cover plate body 1 and reducing the resonance of the cover plate body 1.

[0033] Please see Figure 1 and Figure 2The front cavity cover plate further comprises a reinforcing rib 6 which is integrally formed on one side of the cover plate body 1 close to the second buffer 3. The reinforcing rib 6 comprises a reinforcing frame 61 and a plurality of reinforcing blocks 62. The reinforcing frame 61 is in the shape of a rectangular frame, and the accommodating hole 11 is located in the reinforcing frame 61. The second buffer 3 abuts against the inner frame surface of the reinforcing frame 61. In this embodiment, the number of reinforcing blocks 62 is four. The four reinforcing blocks 62 are respectively connected to the four corners of the reinforcing frame 61, and the end of the reinforcing block 62 away from the reinforcing block 62 extends towards the corresponding corner of the cover plate body 1. By arranging the reinforcing rib 6, the structural strength of the cover plate body 1 can be further improved, thereby reducing resonance of the cover plate body 1.

[0034] Please refer to Figure 3 and Figure 4 In some embodiments of the present application, the front cavity cover plate further comprises a third buffer 7 and a fixing column 8. The third buffer 7 is fixedly connected to one side of the cover plate body 1 close to the second buffer 3. The third buffer 7 is in the shape of a rectangular frame. The inner frame surface of the third buffer 7 is fixedly connected to the peripheral side of the second fixing member 5. The outer frame surface of the third buffer 7 is fixedly connected to the inner frame surface of the reinforcing frame 61. The side of the third buffer 7 away from the cover plate body 1 is fixedly connected to the second buffer 3. In this embodiment, the third buffer 7 is foam. The compression rate of the third buffer 7 is greater than 50%. By arranging the third buffer 7, the cover plate body 1 can be buffered, and the buffering capacity of the second buffer 3 to the cover plate body 1 can be improved.

[0035] Please refer to Figure 3 and Figure 4 The fixing column 8 is arranged on one side of the cover plate body 1 close to the second buffer 3. The side of the fixing column 8 away from the cover plate body 1 is provided with a spherical surface. The arrangement of the fixing column 8 is beneficial to increase the structural strength of the cover plate body 1. The arrangement of the spherical surface is beneficial to reduce damage to external equipment caused by the fixing column 8.

[0036] The present application further provides a loudspeaker module comprising the front cavity cover plate as described above. The loudspeaker module has at least some or all of the beneficial effects of the front cavity cover plate. Here, the description is not repeated.

[0037] In the above embodiments, the description of each embodiment has its own focus. The parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0038] Finally, it should be noted that the above embodiments have been described in the specification and drawings of the application, but this does not limit the patent protection scope of the application. Any equivalent structure or equivalent process replacement or modification based on the essential concept of the application, using the content described in the specification and drawings of the application, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the application.

Claims

1. A front baffle plate, characterized by, The front cavity cover plate comprises a cover plate body, a first buffer and a second buffer, the cover plate body is provided with a receiving hole, the first buffer is filled in the receiving hole, and the second buffer is fixedly arranged on one side of the cover plate body.

2. The front cavity cover plate of claim 1, wherein, The second buffer covers one end of the receiving hole, and the second buffer is fixedly connected with the first buffer.

3. The front cavity cover plate of claim 1, wherein, The front cavity cover plate further comprises a first fixing member, the first fixing member is arranged on one side of the cover plate body close to the second buffer, the first fixing member covers one end of the receiving hole, and the first fixing member is connected with the first buffer and the second buffer.

4. The front cavity cover plate of claim 3, wherein, The front cavity cover plate further comprises a second fixing member, the second fixing member is arranged on one side of the cover plate body away from the first fixing member, the second fixing member covers the other end of the receiving hole, and the second fixing member is fixedly connected with one side of the first buffer away from the first fixing member.

5. The front cavity cover plate of claim 1, wherein, The front cavity cover plate further comprises a reinforcing rib, the reinforcing rib is arranged on one side of the cover plate body close to the second buffer.

6. The front cavity cover plate of claim 5, wherein, The reinforcing rib comprises a reinforcing frame, the receiving hole is located in the reinforcing frame, and the second buffer abuts against an inner frame surface of the reinforcing frame.

7. The front cavity cover plate of claim 6, wherein, The reinforcing rib further comprises a reinforcing block, one end of the reinforcing block is fixedly connected with the reinforcing frame, and the other end extends to the edge of the cover plate body.

8. The front cavity cover plate of claim 6, wherein, The front cavity cover plate further comprises a second fixing member and a third buffer, the second fixing member and the third buffer are arranged in the reinforcing frame, the second fixing member is fixedly connected with the first buffer, and the third buffer is connected with the second fixing member and the reinforcing frame.

9. The front cavity cover plate of claim 6, wherein, The front cavity cover plate further comprises a fixing column for reinforcing the cover plate body, the fixing column is arranged on one side of the cover plate body close to the second buffer, and a spherical surface is arranged on one side of the fixing column away from the cover plate body.

10. A speaker module, characterized by The loudspeaker module comprises the front cavity cover plate according to any one of claims 1-9.

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