Sealing gasket for microphone

Abstract

The utility model relates to the technical field of foam products, in particular to a sealing gasket for a microphone, which comprises a foam gasket and a gauze stacked with the foam gasket, a frustum extends out of one surface, facing the gauze, of the foam gasket, and the periphery of the gauze extends outwards to form a circular ring part; in the assembling state, the top face of the frustum is attached to the gauze through a first adhesive, and the circular ring part is attached to the peripheral side face of the frustum through the first adhesive. The frustum is arranged on the foam gasket, the circular ring part is arranged on the periphery of the gauze, and the circular ring part is attached to the peripheral side face of the frustum through the first adhesive, so that the bonding friction force generated between the circular ring part and the frustum is non-axial, and the bonding strength between the foam gasket and the gauze is enhanced; and the previous attaching mode that only axial friction force exists between the foam gasket and the gauze is replaced, so that the service life of the sealing gasket is prolonged, and the problem that the service life is short in the past is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of foam products, in particular to a sealing gasket for a microphone. Background Art

[0002] Existing mobile devices are generally equipped with microphones for picking up sound. In order to ensure that an effective sealing structure and dustproof structure can be formed between the microphone and the housing of the mobile device, a sealing gasket is arranged between the microphone and the housing. The sealing gasket includes a foam layer and a mesh layer. The foam layer and the mesh layer are bonded by adhesive, and the other side of the mesh layer is provided with adhesive. During assembly, the adhesive of the mesh layer is attached to the housing, and the microphone is installed in contact with the foam layer. After the microphone is fixed, a downward pressure is applied in the direction of the foam, so that an effective seal is formed between the microphone and the housing.

[0003] In existing microphone sealing gaskets, the contact surface between the foam layer and the mesh layer is a horizontal plane, so the adhesive provides an axial friction force. In actual use, when the mesh accumulates dust and needs to be cleaned, a hard needle is inserted into the through hole of the mesh to dredge it, or a brush is used to clean the mesh layer. Whether it is brushing or needle dredging, an axial pressure will be applied to the mesh layer. When the pressure is greater than the friction force provided by the adhesive, since the directions of the two forces are both axial, it will cause the mesh layer and the foam layer to peel off, thereby causing the sealing gasket to lose its sealing performance and have a short service life. Utility Model Content

[0004] The utility model aims to provide a sealing gasket for a microphone in view of the deficiencies in the prior art, wherein the sealing gasket can solve the problem of short service life.

[0005] The purpose of the utility model is achieved through the following technical solutions: the application provides a sealing gasket for a microphone, including a foam gasket and a mesh stacked with the foam gasket, the foam gasket extends a cone on one side facing the mesh, and the outer periphery of the mesh extends a circular ring portion outward; in the assembled state, the top surface of the cone is attached to the mesh by a first adhesive, and the circular ring portion is attached to the outer peripheral side of the cone by the first adhesive.

[0006] Wherein, the first adhesive is double-sided tape.

[0007] Among them, the model of the first adhesive is 3M-9629B double-sided adhesive.

[0008] Wherein, the thickness of the first adhesive is 0.07 mm.

[0009] The vertical distance between the top surface of the cone and the bottom surface of the foam gasket is 0.3 mm.

[0010] Among them, the model of the mesh is Saati-B260HY.

[0011] Among them, the thickness of the mesh is 0.06mm.

[0012] Wherein, a release film is also provided on the top surface of the mesh, and a circle of second adhesive attached to the mesh is provided between the release film and the mesh.

[0013] Among them, the model of the second adhesive is 3M-9629B double-sided tape.

[0014] Wherein, the thickness of the second adhesive layer is 0.07 mm.

[0015] The utility model provides a sealing gasket for a microphone with the following beneficial effects: a cone is arranged on a foam gasket and an annular portion is arranged on the periphery of the mesh, and the annular portion and the outer peripheral side surface of the cone are bonded together by a first adhesive, so that the bonding friction force generated between the annular portion and the cone is non-axial, thereby enhancing the bonding strength between the foam gasket and the mesh, replacing the previous bonding method in which only friction along the axial direction exists between the foam gasket and the mesh, thereby extending the service life of the sealing gasket and solving the problem of short service life in the past. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0017] Figure 1 Schematic diagram of the structure of the sealing gasket for the microphone in this embodiment.

[0018] Figure 2 Schematic diagram of the sealing gasket for the microphone in this embodiment.

[0019] Figure 3 Schematic diagram of the structure of the foam gasket in this embodiment.

[0020] Figure numerals: foam gasket 1, cone 11, first adhesive 2, mesh 3, annular portion 31, second adhesive 4, release film 5. DETAILED DESCRIPTION

[0021] The utility model is further described in conjunction with the following embodiments.

[0022] A specific implementation of a sealing gasket for a microphone of the utility model is as follows Figures 1 to 3As shown, it includes a foam gasket 1 and a mesh 3 stacked with the foam gasket 1, a frustum 11 is extended from one side of the foam gasket 1 toward the mesh 3, and a circular ring 31 is extended outward from the periphery of the mesh 3. Optionally, the angle between the generatrix of the frustum 11 and the horizontal plane is preferably 45 degrees, and the circular ring 31 can be integrally formed with the mesh 3, and the mesh is stamped by a mold, and the circular ring 31 is bent relative to the mesh 3. In the assembled state, the top surface of the frustum 11 is attached to the mesh 3 by the first adhesive 2, and the circular ring 31 is attached to the outer peripheral side of the frustum 11 by the first adhesive 2.

[0023] In this embodiment, the first adhesive 2 is a double-sided adhesive. Optionally, the model of the first adhesive 2 is 3M-9629B double-sided adhesive, and the thickness of the first adhesive is 0.07 mm. 3M-9629B double-sided adhesive has excellent bonding effect, can prevent falling off, and has excellent waterproof performance, good processability, good temperature resistance, short-term temperature resistance of 204-230°C, generally long-term temperature resistance of 120-145°C, and the thickness is generally 0.05-0.13 mm.

[0024] In this embodiment, the vertical distance between the top surface of the cone 11 and the bottom surface of the foam gasket 1 is 0.3 mm, and the model of the mesh 3 is Saati-B260HY. Optionally, the thickness of the mesh 3 is 0.06 mm. The mesh 3 has good physical properties, high strength, low elongation, and good elasticity. When stretching the mesh, you can quickly reach the tension you need, making up for the shortcomings of ordinary silk screens; the mesh is uniform and has good bonding with adhesives.

[0025] In this embodiment, a release film 5 is also provided on the top surface of the mesh 3, and a circle of second adhesive 4 attached to the mesh 3 is provided between the release film 5 and the mesh 3. Optionally, the model of the second adhesive 4 is 3M-9629B double-sided tape. Specifically, the thickness of the second adhesive layer is 0.07 mm.

[0026] A sealing gasket for a microphone in the present embodiment is provided with a cone 11 on a foam gasket 1 and an annular portion 31 on the periphery of a mesh 3. The annular portion 31 and the outer peripheral side surface of the cone 11 are bonded together by a first adhesive 2, so that the bonding friction force generated between the annular portion 31 and the cone 11 is non-axial, thereby enhancing the bonding strength between the foam gasket 1 and the mesh 3, replacing the previous bonding method in which only friction force exists along the axial direction between the foam gasket 1 and the mesh 3, thereby extending the service life of the sealing gasket and solving the problem of short service life in the past.

[0027] 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 the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A sealing gasket for a microphone, characterized in that: It comprises a foam gasket and a mesh gauze stacked with the foam gasket, wherein the foam gasket extends a frustum toward one side of the mesh gauze, and the outer periphery of the mesh gauze extends a circular ring portion outward; In the assembled state, the top surface of the frustum is attached to the mesh by means of a first adhesive, and the annular portion is attached to the outer peripheral side surface of the frustum by means of the first adhesive.

2. The sealing gasket for microphone according to claim 1, characterized in that: The first adhesive is a double-sided tape.

3. The sealing gasket for microphone according to claim 2, characterized in that: The model of the first adhesive is 3M-9629B double-sided adhesive.

4. The sealing gasket for microphone according to claim 3, characterized in that: The thickness of the first adhesive is 0.07 mm.

5. The sealing gasket for a microphone according to claim 1, characterized in that: The vertical distance between the top surface of the frustum and the bottom surface of the foam gasket is 0.3 mm.

6. The sealing gasket for a microphone according to claim 1, characterized in that: The model of the mesh is Saati-B260HY.

7. The sealing gasket for a microphone according to claim 6, characterized in that: The thickness of the mesh is 0.06 mm.

8. The sealing gasket for a microphone according to claim 1, characterized in that: A release film is also provided on the top surface of the mesh, and a circle of second adhesive attached to the mesh is provided between the release film and the mesh.

9. The sealing gasket for a microphone according to claim 8, characterized in that: The model of the second adhesive is 3M-9629B double-sided adhesive.

10. The sealing gasket for a microphone according to claim 8, characterized in that: The thickness of the second adhesive is 0.07 mm.

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