Half-cavity loudspeaker module

Abstract

The utility model discloses a half-cavity loudspeaker module, which comprises a shell, a loudspeaker monomer and a sealing element, the shell comprises a body and a continuous and closed retaining wall, the body is connected with the retaining wall, the body is provided with an installation position, the installation position is located in a hollow area of the retaining wall, and the sealing element is arranged in the hollow area of the retaining wall. A glue injection groove is formed in the end face of the end, away from the body, of the retaining wall. The loudspeaker single body is mounted at the mounting position; the sealing element is formed on the retaining wall in an injection molding mode, a part of the sealing element is embedded in the glue injection groove, and the sealing element is continuous and closed along the retaining wall. The half-cavity loudspeaker module is high in production yield, good in structural stability, low in manufacturing cost and good in bass effect.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a semi-cavity loudspeaker module. Background Art

[0002] With the continuous upgrading of electronic products, electronic products are becoming thinner and lighter. The speaker modules carried by electronic products generally include a front shell, a rear shell and a speaker unit. The front shell and the rear shell are fixedly connected to form an outer shell. The speaker unit is arranged in the outer shell and divides the internal space of the outer shell into a front cavity and a rear cavity. In order to cater to the development trend of thinner and lighter electronic products, the rear shells of some speaker modules are cancelled to become half-cavity speaker modules. In the electronic product, the half-cavity speaker module and other components in the electronic product are enclosed to form a closed rear cavity.

[0003] Traditionally, foam is used to seal between half-cavity speaker modules and components of complete electronic products. The sealing foam is usually a die-cut part. There are tolerances in the attachment of the foam, making it difficult to attach it correctly and to achieve automated attachment. At the same time, part of the foam in the half-cavity speaker module may become skewed during transportation, causing defects in the assembled speaker. When defects occur, the entire machine needs to be disassembled for repair, which undoubtedly increases costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a half-cavity loudspeaker module with high production yield.

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

[0006] A shell, the shell comprising a main body and a continuous and closed retaining wall, the main body is connected to the retaining wall, a mounting position is provided on the main body, the mounting position is located in the hollow area of ​​the retaining wall, and a glue injection groove is provided on the end surface of the retaining wall away from the main body;

[0007] A speaker unit, wherein the speaker unit is installed at the installation position;

[0008] A sealing member is injection molded on the retaining wall, a partial area of ​​the sealing member is embedded in the injection groove, and the sealing member is continuous and closed along the retaining wall.

[0009] Furthermore, the sealing member comprises an embedded portion and a combined portion which are connected to each other, the embedded portion is embedded in the glue injection groove, and the combined portion is in contact with an end surface of the retaining wall away from one end of the main body.

[0010] Furthermore, the sealing member further comprises a protruding portion, wherein the protruding portion is connected to a side of the combining portion away from the embedded portion.

[0011] Furthermore, the cross section of the sealing member is cross-shaped.

[0012] Furthermore, the number of the protrusions is plural.

[0013] Furthermore, the shell has a sound outlet channel, the sound outlet channel connects the installation position with the outside, and the sound outlet channel runs through the retaining wall.

[0014] The beneficial effects of the utility model are:

[0015] Directly forming the seal on the retaining wall by injection molding not only improves the production accuracy and yield rate of the half-cavity speaker module, but also simplifies the subsequent assembly process, which is conducive to improving production efficiency and reducing the manufacturing cost of the half-cavity speaker module.

[0016] The presence of the glue injection groove on the retaining wall can improve the bonding strength between the soft seal and the retaining wall, ensuring that the seal will not fall off or fall over during the transportation of the half-cavity speaker, thereby ensuring the sealing effect of the half-cavity speaker module.

[0017] The thickness of the baffle wall can be made relatively thin (such as 0.5mm), and to ensure the sealing of the foam, the baffle wall thickness of the traditional half-cavity speaker module usually needs to be 0.8mm. Therefore, the rear cavity volume of the half-cavity speaker module can be made larger, so that the half-cavity speaker module can obtain better bass effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a half-cavity speaker module according to Embodiment 1 of the present utility model;

[0019] Figure 2 It is a cross-sectional view of a half-cavity speaker module according to Embodiment 1 of the present utility model;

[0020] Figure 3 for Figure 2 Enlarged view of detail A.

[0021] Description of labels:

[0022] 1. Shell; 11. Main body; 12. Retaining wall; 121. Glue injection groove; 13. Sound outlet channel;

[0023] 2. Speaker unit;

[0024] 3. Sealing part; 31. Embedded part; 32. Joint part; 33. Protruding part. DETAILED DESCRIPTION

[0025] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0026] Please refer to Figures 1 to 3 , a half-cavity speaker module, comprising:

[0027] The housing 1 comprises a main body 11 and a continuous and closed retaining wall 12, wherein the main body 11 is connected to the retaining wall 12, a mounting position is provided on the main body 11, and the mounting position is located in the hollow area of ​​the retaining wall 12, and a glue injection groove 121 is provided on the end surface of the retaining wall 12 away from the main body 11;

[0028] A speaker unit 2, wherein the speaker unit 2 is installed at the installation position;

[0029] The sealing member 3 is injection molded on the retaining wall 12 , a partial area of ​​the sealing member 3 is embedded in the injection groove 121 , and the sealing member 3 is continuous and closed along the retaining wall 12 .

[0030] From the above description, it can be seen that the beneficial effect of the utility model is that the seal 3 is directly formed on the retaining wall 12 by injection molding, which not only improves the production accuracy and yield rate of the half-cavity speaker module, but also simplifies the subsequent assembly process, which is conducive to improving production efficiency and reducing the manufacturing cost of the half-cavity speaker module. The presence of the glue injection groove 121 on the retaining wall 12 can improve the bonding strength between the soft seal 3 and the retaining wall 12, ensuring that the seal 3 will not fall off or fall over during the transportation of the half-cavity speaker, thereby ensuring the sealing effect of the half-cavity speaker module. The wall thickness of the retaining wall 12 can be made relatively thin (such as 0.5mm), and in order to ensure the sealing of the foam, the wall thickness of the retaining wall 12 of the traditional half-cavity speaker module usually needs to be 0.8mm. Therefore, the back cavity volume of the present half-cavity speaker module can be made larger, so that the half-cavity speaker module can obtain a better bass effect.

[0031] Furthermore, the sealing member 3 includes an embedded portion 31 and a connecting portion 32 which are connected to each other. The embedded portion 31 is embedded in the glue injection groove 121 , and the connecting portion 32 contacts the end surface of the retaining wall 12 away from the main body 11 .

[0032] It can be seen from the above description that the seal 3 and the retaining wall 12 have a sufficiently large contact area, so that the seal 3 and the retaining wall 12 have a high bonding strength. At the same time, the seal 3 and the components in the electronic product can form a better seal.

[0033] Furthermore, the sealing member 3 further includes a protruding portion 33 , and the protruding portion 33 is connected to a side of the coupling portion 32 away from the embedding portion 31 .

[0034] It can be seen from the above description that the presence of the protrusion 33 can form a better seal between the semi-cavity speaker module and the components in the electronic product.

[0035] Furthermore, the cross section of the sealing member 3 is cross-shaped.

[0036] It can be seen from the above description that the sealing member 3 has a simple structure and is easy to process and shape.

[0037] Furthermore, there are multiple protrusions 33.

[0038] It can be seen from the above description that the number of the protrusions 33 can be set according to actual needs.

[0039] Furthermore, the shell 1 has a sound outlet channel 13 , the sound outlet channel 13 connects the installation position with the outside, and the sound outlet channel 13 runs through the retaining wall 12 .

[0040] It can be seen from the above description that the existence of the retaining wall 12 will not affect the sound of the half-cavity speaker module.

[0041] Embodiment 1

[0042] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: a semi-cavity speaker module, which is installed in an electronic product and is in sealing contact with a component of the electronic product as a whole. The component of the electronic product as a whole can be a structural part such as a middle frame of the electronic product.

[0043] The semi-cavity speaker module includes a shell 1, a speaker unit 2 and a seal 3. The shell 1 includes a body 11 and a continuous and closed retaining wall 12. The body 11 is connected to the retaining wall 12. A mounting position is provided on the body 11. The mounting position is located in the hollow area of ​​the retaining wall 12. A glue injection groove 121 is provided on the end surface of the retaining wall 12 away from the body 11. Preferably, the glue injection groove 121 is continuous and closed. The speaker unit 2 is installed at the mounting position. The seal 3 is injection molded on the retaining wall 12. A partial area of ​​the seal 3 is embedded in the glue injection groove 121. The seal 3 is continuous and closed along the retaining wall 12. The seal 3 is continuous and closed along the retaining wall 12, which means that the speaker unit 2 corresponds to the hollow area of ​​the seal 3. That is, in the electronic product, the speaker unit 2, the shell 1, the seal 3 and the components of the electronic product together form a sealed rear cavity.

[0044] Preferably, the main body 11 and the retaining wall 12 are an integral structure formed by integral processing. In the present embodiment, the main body 11 and the retaining wall 12 are an integral structure formed by integral injection molding. In other embodiments, the main body 11 and the retaining wall 12 may also be an integral structure formed by insert injection molding, or the retaining wall 12 and the main body 11 may be adhesively connected or screwed.

[0045] The seal 3 includes a connected embedding portion 31 and a bonding portion 32, the embedding portion 31 is embedded in the glue injection groove 121, and the bonding portion 32 is in contact with the end surface of the retaining wall 12 away from the main body 11. The seal 3 and the retaining wall 12 can form a T-shaped bonding surface, which effectively improves the bonding strength between the seal 3 and the retaining wall 12.

[0046] To further improve the sealing effect, the seal 3 preferably further includes at least one protrusion 33, the protrusion 33 is continuous and closed along the retaining wall 12, and the protrusion 33 connects the side of the joint 32 away from the embedded portion 31. In this embodiment, the number of the protrusion 33 is one, and the cross-section of the seal 3 is cross-shaped. In other embodiments, the number of the protrusion 33 is multiple.

[0047] The housing 1 has a sound outlet channel 13 , which connects the installation position with the outside world, and the sound outlet channel 13 passes through the retaining wall 12 .

[0048] In summary, the semi-cavity speaker module provided by the utility model has high production yield, high production efficiency, low manufacturing cost, good structural stability, good sealing effect, large rear cavity volume, and better bass effect.

[0049] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A half-cavity speaker module, characterized in that: include A shell, the shell comprising a main body and a continuous and closed retaining wall, the main body is connected to the retaining wall, a mounting position is provided on the main body, the mounting position is located in the hollow area of ​​the retaining wall, and a glue injection groove is provided on the end surface of the retaining wall away from the main body; A speaker unit, wherein the speaker unit is installed at the installation position; A sealing member is injection molded on the retaining wall, a partial area of ​​the sealing member is embedded in the injection groove, and the sealing member is continuous and closed along the retaining wall.

2. The semi-cavity speaker module according to claim 1, characterized in that: The sealing member comprises an embedded portion and a combined portion which are connected to each other. The embedded portion is embedded in the glue injection groove, and the combined portion is in contact with an end surface of the retaining wall away from one end of the body.

3. The semi-cavity speaker module according to claim 2, characterized in that: The sealing member further includes a protruding portion connected to a side of the combining portion away from the embedding portion.

4. The semi-cavity speaker module according to claim 3, characterized in that: The cross section of the sealing member is cross-shaped.

5. The semi-cavity speaker module according to claim 3, characterized in that: The number of the protrusions is plural.

6. The semi-cavity speaker module according to claim 1, characterized in that: The shell has a sound outlet channel, the sound outlet channel connects the installation position with the outside, and the sound outlet channel runs through the retaining wall.

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