CN212785806U

CN212785806U - Vibrating plate for sound conduction

Info

Publication number: CN212785806U
Application number: CN202022248878.0U
Authority: CN
Inventors: 饶帮国
Original assignee: Xiamen Yinuode Composite Material Co ltd
Current assignee: Xiamen Yinuode Composite Material Co ltd
Priority date: 2020-10-11
Filing date: 2020-10-11
Publication date: 2021-03-23
Anticipated expiration: 2030-10-11

Abstract

The application relates to a vibration board for sound conduction relates to the technical field of vibration board, and it includes intermediate level, first carbon fiber sheet layer and second carbon fiber sheet layer, and first carbon fiber sheet layer and second carbon fiber sheet layer laminate with the both sides face in intermediate level respectively. This application has the effect of ensureing vibration board life.

Description

Vibrating plate for sound conduction

Technical Field

The present application relates to the technical field of vibrating plates, and in particular, to a vibrating plate for sound conduction.

Background

In acoustic and speaker equipment, a vibration plate is required, which has light weight, high rigidity, and good resonance characteristics, and is an important component for ensuring sound quality.

Currently, most of diaphragms used in speakers are made of a PI foam, a PMI foam, a polyester foam, or other common foam as an intermediate layer, and metal material layers are bonded to both surfaces of the intermediate layer by adhesive layers.

In view of the above-mentioned related art, the present inventors have found that, in a vibration plate, the vibration conduction effect of sound is mainly made by a metal material layer, and the metal material layer has a problem of oxidation after long-term use, thereby affecting the service life of the vibration plate, and thus improvement is required.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem of the service life of the vibration plate, the present application provides a vibration plate for sound conduction.

The technical scheme that a vibration plate for sound conduction that this application provided adopts as follows:

the utility model provides a vibration board for sound conduction, includes intermediate level, first carbon fiber sheet layer and second carbon fiber sheet layer laminate with the both sides face in intermediate level respectively.

Through adopting above-mentioned technical scheme, utilize the intermediate level can bond first carbon fiber sheet layer and second carbon fiber sheet layer as an organic whole, first carbon fiber sheet layer and second carbon fiber sheet layer have corrosion-resistant effect to ensure the life of vibration board, simultaneously, the intensity of first carbon fiber sheet layer and second carbon fiber sheet layer is 6 times of conventional steel material, and weight is 1/6 of conventional steel material, further ensures the result of use of vibration board.

Preferably, the first carbon fiber sheet layer and the second carbon fiber sheet layer comprise carbon fiber sheets, and the carbon fiber sheets are formed by sintering a plurality of carbon fiber bundles parallel to each other.

By adopting the technical scheme, the carbon fiber plate sintered and formed by the carbon fiber bundles has higher hardness and lower thickness compared with the existing woven carbon fiber material.

Preferably, the carbon fiber plates in the first carbon fiber plate layer and the second carbon fiber plate layer are at least provided with two carbon fiber plates, and the carbon fiber plates are arranged in a superposition manner.

Through adopting above-mentioned technical scheme, because the carbon fiber board has a plurality of carbon fiber bundle sintering shaping, consequently, the carbon fiber board itself is more fragile along carbon fiber bundle width direction buckles, can overcome this defect through first carbon fiber sheet layer and the second carbon fiber sheet layer that forms by the combination of multi-disc carbon fiber board.

Preferably, the carbon fiber bundles of the carbon fiber plates overlapped with each other are arranged in a staggered manner, and an included angle between the carbon fiber bundles of the carbon fiber plates is larger than 0 degree and smaller than 180 degrees.

Through adopting above-mentioned technical scheme, through each carbon fiber plate that the combination formed first carbon fiber sheet layer and second carbon fiber sheet layer crisscross, can further improve the bulk strength of first carbon fiber sheet layer and second carbon fiber sheet layer.

Preferably, the intermediate layer is provided as a polymethacrylimide foam sheet.

Through adopting above-mentioned technical scheme, polymethacrylimide cystosepiment has light, excels in, advantage that heat resistance is good, uses as the intermediate level, can effectively ensure the joint strength between first carbon fiber sheet layer and the second carbon fiber sheet layer.

Preferably, the thickness of the polymethacrylimide foam plate is 0.13 mm.

Preferably, the first carbon fiber sheet layer and the second carbon fiber sheet layer have a thickness of 0.05 to 0.07 mm.

In summary, the present application includes at least one of the following beneficial technical effects:

the corrosion resistance is strong, and the service life of the vibrating plate is effectively ensured;

the sound conduction is good, the strength is 6 times of that of the conventional steel metal material, and the using effect of the vibrating plate is effectively ensured;

the thickness is small, and the device can be used for subminiature sound and loudspeaker equipment.

Drawings

Fig. 1 is a schematic sectional view of a vibration plate of an embodiment of the present application;

FIG. 2 is a front view of a first carbon fiber ply or a second carbon fiber ply of an embodiment of the present application;

fig. 3 is a schematic cross-sectional view of a carbon fiber sheet according to an embodiment of the present application.

Reference numerals: 1. a first carbon fiber ply; 2. an intermediate layer; 3. a second carbon fiber ply; 4. a carbon fiber sheet; 41. carbon fiber bundles.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a vibration plate for sound conduction. Referring to fig. 1, the vibrating plate comprises a first carbon fiber plate layer 1, an intermediate layer 2 and a second carbon fiber plate layer 3 which are sequentially stacked, wherein the intermediate layer 2 is made of a polymethacrylimide foam plate, and the first carbon fiber plate layer 1 and the second carbon fiber plate layer 3 are arranged in the same way; wherein the thickness of the polymethacrylimide foam plate is 0.13mm, and the thickness of the first carbon fiber plate layer 1 and the second carbon fiber plate layer 3 is 0.05-0.07 mm.

Referring to fig. 2 and 3, each of the first carbon fiber plate layer 1 and the second carbon fiber plate layer 3 includes a plurality of carbon fiber plates 4 sequentially overlapped, each carbon fiber plate 4 is formed by sintering a plurality of carbon fiber bundles 41 parallel to each other, and each carbon fiber bundle 41 is formed by extruding and sintering a plurality of carbon fiber filaments or carbon fiber particles; wherein, above the carbon fiber plate 4 can adopt the graphite alkene carbon fiber preimpregnation cloth that the model of xiamen one nuodal combined material limited company sells to the outsourcing is 010, 020, 030 or 050, in this technical scheme, specifically disclose first carbon fiber plate layer 1 and second carbon fiber plate layer 3 when adopting carbon fiber plate 4 to be provided with two in succession.

Referring to fig. 2 and 3, each carbon fiber plate 4 included in the first carbon fiber plate layer 1 (or the second carbon fiber plate layer 3) is staggered according to the extending direction of the carbon fiber bundles 41, and the included angle between the carbon fiber bundles 41 of any two adjacent carbon fiber plates 4 is greater than 0 degree and less than 180 degrees; specifically, each carbon fiber plate 4 included in the first carbon fiber plate layer 1 (or the second carbon fiber plate layer 3) is sequentially divided into the first carbon fiber plate 4 and the second carbon fiber plate 4 along the arrangement direction thereof, and at this time, an included angle between a vertical projection line of each carbon fiber bundle 41 on the first carbon fiber plate 4 and a vertical projection line of each carbon fiber bundle 41 on the second carbon fiber plate 4 is greater than 0 degree and smaller than 180 degrees.

The first carbon fiber plate 4 and the second carbon fiber plate 4 are connected into a whole in a sintering or pressing mode, and the first carbon fiber plate 4 and the second carbon fiber plate 4 are internally provided with a certain resin material, so that the first carbon fiber plate and the second carbon fiber plate can be bonded into a whole in a pressing mode during primary sintering molding.

The implementation principle of the vibrating plate for sound conduction in the embodiment of the application is as follows:

the overall strength of the first carbon fiber plate layer 1 and the second carbon fiber plate layer 3 can be ensured through the two carbon fiber plates 4 which are arranged in a mutually staggered mode, so that the overall thickness of the first carbon fiber plate 4 and the second carbon fiber plate layer 3 formed by overlapping the carbon fiber plates 4 can be smaller than the existing woven carbon fiber plate 4, and the strength can be larger than the existing woven carbon fiber plate 4.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A vibrating plate for sound conduction, characterized by: the carbon fiber composite board comprises an intermediate layer (2), a first carbon fiber board layer (1) and a second carbon fiber board layer (3), wherein the first carbon fiber board layer (1) and the second carbon fiber board layer (3) are respectively attached to two side faces of the intermediate layer (2).

2. A vibration plate for sound conduction according to claim 1, wherein: the first carbon fiber plate layer (1) and the second carbon fiber plate layer (3) comprise carbon fiber plates (4), and the carbon fiber plates (4) are formed by sintering a plurality of carbon fiber bundles (41) which are parallel to each other.

3. A vibration plate for sound conduction according to claim 2, wherein: the carbon fiber plates (4) in the first carbon fiber plate layer (1) and the second carbon fiber plate layer (3) are at least provided with two carbon fiber plates, and the carbon fiber plates (4) are overlapped.

4. A vibration plate for sound conduction according to claim 3, wherein: the carbon fiber bundles (41) of the carbon fiber plates (4) which are mutually overlapped are arranged in a mutually staggered mode, and the included angle between the carbon fiber bundles (41) of the carbon fiber plates (4) is larger than 0 degree and smaller than 180 degrees.

5. A vibration plate for sound conduction according to claim 1, wherein: the middle layer (2) is a polymethacrylimide foam plate.

6. A vibrating plate for sound conduction as claimed in claim 5, wherein: the thickness of the polymethacrylimide foam plate is 0.13 mm.

7. A vibration plate for sound conduction according to claim 1, wherein: the thickness of the first carbon fiber plate layer (1) and the second carbon fiber plate layer (3) is 0.05-0.07 mm.