Loudspeaker module and sound production equipment

Abstract

The utility model discloses a loudspeaker module. The loudspeaker module comprises a housing, a loudspeaker monomer and an assembly block. A concave assembly cavity is formed in the shell, and a step structure is arranged on the inner circumference of the assembly cavity; the loudspeaker single body is arranged on the step structure; a glue injection groove for accommodating glue is formed between the inner side surface of the assembly cavity and the loudspeaker single body; the assembly block is welded to one side of the assembly cavity, the top end of the assembly block is bent and extends towards the side close to the assembly cavity, and a glue containing groove communicated with the glue injection groove is formed between the assembly block and the step structure; the glue injection groove and the glue containing groove are filled with structural glue. According to the loudspeaker module, after the structural adhesive is injected into the adhesive injection groove, the structural adhesive flows into the adhesive accommodating groove formed between the assembly block and the step structure, after the structural adhesive is dried, the structural adhesive in the adhesive accommodating groove forms a hard limiting structure, and during a drop test, due to the existence of the hard limiting structure, the loudspeaker single body can be firmly fixed on the shell, so that the service life of the loudspeaker single body is prolonged. And the anti-falling capability of the loudspeaker module is enhanced.

Description

Technical Field

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

[0002] In traditional speaker modules, the bonding between the speaker unit and the shell mainly relies on the affinity between the glue and the shell to keep the speaker intact on the shell. As speaker module tests are becoming more and more stringent, some are still required to pass high-specification drop tests after high-temperature tests, high-temperature and high-humidity tests, temperature cycles, etc. This undoubtedly makes it difficult for the original glue bonding structure to meet customer requirements.

[0003] The traditional method is to increase the drop margin, usually by setting up double glue grooves to increase the glue area so that the drop margin can be increased to meet customer requirements. This method requires more rear cavity space of the shell, which will cause the loss of bass effect. At the same time, due to the setting of double glue grooves, the amount of glue to be applied will increase significantly, which will undoubtedly increase the glue cost and reduce the efficiency of gluing. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a loudspeaker module and a sound-generating device having the loudspeaker module, wherein the fixing strength of the loudspeaker unit and the shell is relatively high and the loudspeaker module has good anti-drop capability.

[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 housing, wherein a recessed assembly cavity is provided in the housing, and a step structure is provided on the inner periphery of the assembly cavity;

[0007] A speaker unit, the speaker unit is placed on the step structure; a glue injection groove for receiving glue is formed between the inner side of the assembly cavity and the speaker unit;

[0008] An assembly block is welded to one side of the assembly cavity, the top of the assembly block is bent and extended toward the side close to the assembly cavity, and a glue containing groove connected to the glue injection groove is formed between the assembly block and the step structure; structural glue is poured into the glue injection groove and the glue containing groove.

[0009] Furthermore, there are multiple assembly blocks.

[0010] Furthermore, the assembly blocks are respectively provided on two opposite sides of the assembly cavity.

[0011] Furthermore, the housing is provided with a positioning groove which cooperates with the assembly block.

[0012] Furthermore, the height of the glue containing groove gradually decreases from one end connected to the glue injection groove to the other end.

[0013] Furthermore, the speaker unit and the step structure are connected by a sealant.

[0014] Furthermore, the sealant is made of rubber or silicone.

[0015] Furthermore, an annular boss is provided in the shell, and the inner side of the annular boss forms the assembly cavity.

[0016] Furthermore, the opening edge of the assembly cavity is provided with a chamfer structure.

[0017] In order to solve the above technical problems, the second technical solution adopted by the present invention is: a sound-generating device, including the above-mentioned speaker module.

[0018] The beneficial effect of the utility model is that after the structural glue is injected into the glue injection groove of the speaker module, the structural glue will flow into the glue storage groove formed between the assembly block and the step structure. When the structural glue is dry, the structural glue in the glue storage groove will form a hard limit structure. During the drop test, due to the existence of the hard limit structure, the speaker unit can be firmly fixed on the shell, thereby enhancing the anti-drop ability of the speaker module. The glue storage groove has little effect on the glue injection amount and glue injection efficiency, and will not occupy more rear cavity space in the shell to cause loss of bass effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a speaker module according to Embodiment 1 of the present utility model;

[0020] Figure 2 This is a partial structural exploded view of the speaker module of the first embodiment of the utility model;

[0021] Figure 3 A cross-sectional view of a speaker module according to Embodiment 1 of the present utility model;

[0022] Figure 4 for Figure 3 A magnified detail of part A.

[0023] Description of labels:

[0024] 1. Shell; 11. Annular boss; 111. Assembly cavity; 112. Chamfer structure; 12. Step structure; 13. Glue injection groove; 14. Glue storage groove; 15. Positioning groove;

[0025] 2. Speaker unit;

[0026] 3. Assembly block;

[0027] 4. Structural adhesive;

[0028] 5. Sealant. DETAILED DESCRIPTION

[0029] 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.

[0030] Please refer to Figures 1 to 4 , a speaker module, comprising:

[0031] A housing 1, wherein a recessed assembly cavity 111 is provided in the housing 1, and a step structure 12 is provided on the inner periphery of the assembly cavity 111;

[0032] A speaker unit 2, the speaker unit 2 is placed on the step structure 12; a glue injection groove 13 for receiving glue is formed between the inner side of the assembly cavity 111 and the speaker unit 2;

[0033] The assembly block 3 is welded to one side of the assembly cavity 111, and the top of the assembly block 3 is bent and extended toward the side close to the assembly cavity 111, and a glue containing groove 14 connected to the glue injection groove 13 is formed between the assembly block 3 and the step structure 12; the structural glue 4 is poured into the glue injection groove 13 and the glue containing groove 14.

[0034] From the above description, it can be seen that the beneficial effect of the utility model is that after the structural glue 4 is injected into the glue injection groove 13 of the speaker module, the structural glue 4 will flow into the glue storage groove 14 formed between the assembly block 3 and the step structure 12. When the structural glue 4 is dry, the structural glue 4 in the glue storage groove 14 will form a hard limit structure. During the drop test, due to the existence of the hard limit structure, the speaker unit 2 can be firmly fixed on the shell 1, thereby enhancing the anti-drop ability of the speaker module. The glue storage groove 14 has little effect on the glue injection amount and glue injection efficiency, and will not occupy more rear cavity space in the shell 1 to cause loss of bass effect.

[0035] Furthermore, there are multiple assembly blocks 3.

[0036] It can be seen from the above description that a plurality of assembly blocks 3 can be used to form a plurality of adhesive containing grooves 14 , which is beneficial to further enhance the bonding and fixing strength between the speaker unit 2 and the housing 1 .

[0037] Furthermore, the assembly blocks 3 are respectively disposed on two opposite sides of the assembly cavity 111 .

[0038] It can be seen from the above description that the hard limiting structure formed by the structural adhesive 4 in the adhesive containing groove 14 after drying will limit the two sides of the speaker unit 2 to prevent the speaker unit 2 from being separated from the housing 1 on one side.

[0039] Furthermore, the housing 1 is provided with a positioning groove 15 that cooperates with the assembly block 3 .

[0040] It can be seen from the above description that the positioning groove 15 is conducive to more accurate assembly of the assembly block 3 and the housing 1 .

[0041] Furthermore, the height of the glue containing groove 14 gradually decreases from one end connected to the glue injection groove 13 to the other end.

[0042] It can be seen from the above description that the shape of the adhesive groove 14 is conducive to making it easier for the external structural adhesive 4 to fill the adhesive groove 14 , thereby reducing the occurrence of bubbles in the adhesive groove 14 that make it difficult for the structural adhesive 4 to enter.

[0043] Furthermore, the speaker unit 2 and the step structure 12 are connected via a sealant 5 .

[0044] It can be seen from the above description that the sealant 5 can seal the assembly gap between the speaker unit 2 and the step structure 12 to prevent air leakage in the front cavity and affect the sound performance.

[0045] Furthermore, the sealant 5 is made of rubber or silicone.

[0046] It can be seen from the above description that the material of the sealant 5 can be selected according to actual use requirements or production conditions.

[0047] Furthermore, an annular boss 11 is provided in the housing 1 , and the inner side of the annular boss 11 forms the assembly cavity 111 .

[0048] It can be seen from the above description that, compared with the assembly cavity 111 formed by a recess, the assembly cavity 111 formed by the annular boss 11 can increase the rear cavity of the housing 1 and enhance the bass effect.

[0049] Furthermore, a chamfered structure 112 is provided at the opening edge of the assembly cavity 111 .

[0050] From the above description, it can be seen that the chamfered structure 112 can facilitate the placement of the speaker unit 2 into the assembly cavity 111, and can also increase the bonding area of ​​the structural adhesive 4 in the adhesive injection groove 13, thereby enhancing the bonding strength between the speaker unit 2 and the housing 1.

[0051] A sound-generating device comprises the above-mentioned speaker module.

[0052] It can be seen from the above description that the sound-emitting device has good anti-fall capability.

[0053] Please refer to Figures 1 to 4The first embodiment of the utility model is: a sound-generating device, including a speaker module. The speaker module includes a shell 1, a speaker unit 2 and an assembly block 3; a recessed assembly cavity 111 is provided in the shell 1, and a step structure 12 is provided on the inner periphery of the assembly cavity 111; the speaker unit 2 is placed on the step structure 12; a glue injection groove 13 for receiving glue is formed between the inner side surface of the assembly cavity 111 and the speaker unit 2; the assembly block 3 is welded to one side of the assembly cavity 111, and the top of the assembly block 3 is bent and extended toward the side close to the assembly cavity 111, and a glue containing groove 14 connected to the glue injection groove 13 is formed between the assembly block 3 and the step structure 12; the glue injection groove 13 and the glue containing groove 14 are filled with structural glue 4.

[0054] Specifically, the housing 1 includes a front housing (not shown in the figure) and a rear housing that cooperate with each other. The rear housing includes a bottom plate and a peripheral wall formed by bending and extending the edge of the bottom plate upward. The front housing is fixedly connected to the rear housing and closes the top opening of the rear housing. In this embodiment, an annular boss 11 is provided in the housing 1. The annular boss 11 is located on the inner side of the bottom plate of the rear housing. The inner side of the annular boss 11 forms an assembly cavity 111. The step structure 12 is formed by the protrusion of the bottom area of ​​the inner side of the annular boss 11. The speaker unit 2, the step structure 12 and the bottom plate together form the front cavity of the speaker module. The peripheral wall of the rear housing is provided with a sound outlet connected to the front cavity. The speaker unit 2 is rectangular, and the annular boss 11 is set to a rectangular frame shape corresponding to the speaker unit 2. The length of the assembly cavity 111 is greater than the length of the speaker unit 2, and the width of the assembly cavity 111 is greater than the width of the speaker unit 2. A rectangular frame-shaped glue injection groove 13 is formed between the inner side of the assembly cavity 111 and the speaker unit 2. Part of the inner side surface of the assembly cavity 111 is recessed to form a pit, and the pit is connected to the top surface and the inner side surface of the annular boss 11. The bottom surface of the pit is flush with the top surface of the step structure 12. The assembly block 3 is in an inverted L shape, and the assembly block 3 is laser welded in the pit. The structural adhesive 4 includes but is not limited to UV adhesive. In other embodiments, it is also feasible that the assembly cavity 111 is formed by a recess of a part of the bottom plate of the rear shell of the shell 1. It is easy to understand that the adhesive groove 14 can increase the bonding area of ​​the structural adhesive 4, and when the structural adhesive 4 is dry, the structural adhesive 4 in the adhesive groove 14 will form a hard limiting structure. During the drop test, due to the presence of the hard limiting structure, the speaker unit 2 can be firmly fixed on the shell 1, thereby enhancing the anti-drop ability of the speaker module.

[0055] There are multiple assembly blocks 3. Assembly blocks 3 are respectively provided on opposite sides of the assembly cavity 111. Specifically, the assembly cavity 111 is rectangular, the sound outlet is connected to a longer side of the assembly cavity 111, and assembly blocks 3 are respectively provided on two shorter side walls of the annular boss 11 to form a glue containing groove 14.

[0056] The housing 1 is provided with a positioning groove 15 that matches the assembly block 3. Specifically, the bottom end of the assembly block 3 is rectangular, and the positioning groove 15 matches the shape of the bottom end of the assembly block 3. The bottom surface of the assembly block 3 and the bottom surface of the positioning groove 15 are connected and fixed by ultrasonic welding technology.

[0057] The height of the glue containing groove 14 gradually decreases from one end connected to the glue injection groove 13 to the other end. Specifically, the cross section of the glue containing groove 14 is trapezoidal, and the cross section is perpendicular to the inner side surface of the assembly cavity 111 and the bottom surface of the bottom plate of the housing 1.

[0058] The speaker unit 2 is connected to the step structure 12 by a sealant 5. Optionally, the sealant 5 is made of rubber or silicone. The sealant 5 is used to seal the assembly gap between the speaker unit 2 and the step structure 12 to prevent air leakage in the front cavity and affect the sound performance.

[0059] Preferably, in order to facilitate the placement of the loudspeaker unit 2 into the assembly cavity 111 and increase the bonding area of ​​the structural adhesive 4 in the adhesive injection groove 13 , a chamfered structure 112 is provided at the opening edge of the assembly cavity 111 .

[0060] In summary, after the structural glue is injected into the glue injection groove of the speaker module provided by the utility model, the structural glue will flow into the glue storage groove formed between the assembly block and the step structure. When the structural glue is dry, the structural glue in the glue storage groove will form a hard limit structure. During the drop test, due to the existence of the hard limit structure, the speaker unit can be firmly fixed on the shell, thereby enhancing the anti-drop ability of the speaker module. The glue storage groove has little effect on the glue injection amount and glue injection efficiency, and will not occupy more rear cavity space in the shell to cause loss of bass effect.

[0061] 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 speaker module, characterized in that: include: A housing, wherein a recessed assembly cavity is provided in the housing, and a step structure is provided on the inner periphery of the assembly cavity; A speaker unit, the speaker unit is placed on the step structure; a glue injection groove for receiving glue is formed between the inner side of the assembly cavity and the speaker unit; An assembly block is welded to one side of the assembly cavity, the top of the assembly block is bent and extended toward the side close to the assembly cavity, and a glue containing groove connected to the glue injection groove is formed between the assembly block and the step structure; structural glue is poured into the glue injection groove and the glue containing groove.

2. The speaker module according to claim 1, characterized in that: The number of the assembly blocks is multiple.

3. The speaker module according to claim 2, characterized in that: The assembly blocks are respectively arranged on opposite sides of the assembly cavity.

4. The speaker module according to claim 1, characterized in that: The housing is provided with a positioning groove matched with the assembly block.

5. The speaker module according to claim 1, characterized in that: The height of the glue containing groove gradually decreases from one end connected to the glue injection groove to the other end.

6. The speaker module according to claim 1, characterized in that: The speaker unit and the step structure are connected via a sealant.

7. The speaker module according to claim 6, characterized in that: The sealant is made of rubber or silicone.

8. The speaker module according to claim 1, characterized in that: An annular boss is arranged in the shell, and the inner side of the annular boss forms the assembly cavity.

9. The speaker module according to claim 1, characterized in that: The opening edge of the assembly cavity is provided with a chamfer structure.

10. A sound-generating device, characterized in that: A speaker module comprising any one of claims 1 to 9.

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