WO2021114153A1

WO2021114153A1 - Loudspeaker vibration member

Info

Publication number: WO2021114153A1
Application number: PCT/CN2019/124704
Authority: WO
Inventors: 梁平; 陈爱辛; 赵彬
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2021-06-17

Abstract

The present utility model provides a loudspeaker vibration member, comprising a diaphragm and a structural member. The diaphragm comprises a vibration part, a surround part surrounding and connected to the vibration part, and a positioning part surrounding and connected to the surround part. The surround part is disposed between the vibration part and the positioning part, and the positioning part and the structural member are connected to each other and are integrally formed, such that the diaphragm and the structural member are directly formed without any influence from other media, thus ensuring the concentricity of the vibration member and avoiding the influence of the existing glued glue layer on the concentricity, thereby improving the stability and consistency of product performance.

Description

Vibrating part of loudspeaker

Technical field

The utility model relates to the technical field of loudspeakers, in particular to a loudspeaker vibrating part.

Background technique

Nowadays, the audio amplifier function of mobile phones is becoming more and more powerful, and the performance requirements of mobile phone speakers are getting higher and higher. The speaker drives the diaphragm medium to vibrate through the voice coil to promote air fluctuations to produce sound. The mobile phone speaker is small in size. In order to ensure the sound quality of the sound effect, the precision of the vibrating part is extremely high. In the prior art, the vibrating part is made by gluing the diaphragm with the basin frame, the front cover, or the steel ring structure according to the different products. The diaphragm can be air-blasted or molded to make the raw material of the diaphragm become the required structure. Semi-finished or finished products, however, after the diaphragm is formed and then glued and assembled with the basin frame, front cover or steel ring structure to form a diaphragm structure, problems such as poor concentricity of the vibration parts, glue overflow, and other poor bonding conditions will occur. , Resulting in poor product consistency, unstable product performance, and low yield.

Therefore, it is necessary to provide a loudspeaker vibrating member whose concentricity is easy to control during product molding.

technical problem

The purpose of the utility model is to provide a loudspeaker vibrating part, which aims to solve how to provide a vibrating part whose concentricity is easy to control during the forming process.

The solution to the problem

Technical solutions

The technical solution of the present invention is as follows: a loudspeaker vibrating member, including a vibrating membrane and a structural member, the vibrating membrane including a vibrating part, a folding ring part surrounding and connected to the vibrating part, and a surrounding folding ring part And a positioning part connected to it, the folding ring part is arranged between the vibrating part and the positioning part, and the positioning part is connected with the structural member and is integrally formed.

In the above technical solution, the positioning portion and the structural member are integrally formed by a combination of one or more of gas explosion molding, compression molding or injection molding.

In any of the above technical solutions, the positioning portion includes a first positioning portion located on the same plane as the vibrating portion and connected to the folding ring portion, and a second positioning portion extending from the first positioning portion in the direction of the structural member The top of the structural member is connected with the first positioning portion, and the outer side of the structural member is connected with the second positioning portion.

In any of the above technical solutions, the second positioning portion is perpendicular to the first positioning portion.

In any of the above technical solutions, the diaphragm is quadrilateral, and the second positioning portion includes a first side wall arranged relatively parallel and a second side wall connected to the first side wall and arranged relatively perpendicularly. The side wall and the second side wall are connected end to end.

In any of the above technical solutions, the structural member includes a first support portion connected to the first positioning portion and a second support portion connected to the second positioning portion, and the second support portion is located in the structure Pieces outside.

In any of the above technical solutions, the outer contour of the structural member is quadrilateral, and the second supporting portion includes a third side wall parallel to the first side wall and a fourth side wall parallel to the second side wall, The third side wall and the fourth side wall are connected at the end.

In any of the above technical solutions, the material of the diaphragm is a combination of one or more of silicone rubber, TPU, and TPE.

The beneficial effects of the invention

Beneficial effect

The beneficial effect of the utility model is that the structure of the vibrating part and the positioning part of the diaphragm are directly integrally formed by gas explosion molding, compression molding or injection molding, so that the diaphragm and the structure are not affected by other media. It is directly formed under the pressure to ensure the concentricity of the vibrating parts, avoid the influence of the existing glued layer on the concentricity, and improve the stability and consistency of product performance.

Brief description of the drawings

Description of the drawings

Figure 1 is a schematic diagram of the vibrating part of the utility model;

Figure 2 is a cross-sectional view at A-A in Figure 2;

Fig. 3 is a partial enlarged schematic diagram of B in Fig. 3;

Figure 4 is a schematic diagram of the vibrating part of the utility model;

The best embodiment for implementing the invention

The best mode of the present invention

The present utility model will be further explained below in conjunction with the drawings and embodiments.

Referring to FIG. 1, the present invention provides a sounder vibrating member 100, the vibrating member 100 includes: a diaphragm 10 and a structural member 20.

Specifically, the diaphragm 10 is used to receive the vibration of a vibration source (not shown in the figure) and convert it into the vibration of its own diaphragm medium plane 11, and then push the air to fluctuate to generate sound. The vibration source in a mobile phone sounder is usually It is a voice coil. The voice coil changes its current in a magnetic field to excite its own vibration, and transmits its own vibration to the diaphragm 10 through contact. The technical principle is a disclosed technology, and the present utility model will not be specifically developed.

Specifically, the material of the diaphragm 10 includes a single layer or composite material such as silica gel, rubber, TPU, TPE, etc., and the raw material of the diaphragm 10 can be directly transformed into a desired semi-finished or finished product with a structure through a gas explosion or a molded structure.

In this embodiment, referring to FIGS. 1-4, the diaphragm 10 and the structural member 20 are integrally formed to ensure the accuracy of the connection between the diaphragm 10 and the structural member 20. The center of mass of the vibrating element 100 can be unified with the center of mass of the diaphragm medium plane 11, and the vibration can be transmitted in a more balanced manner.

More preferably, the diaphragm 10 and the structural member 20 are integrally formed by a combination of one or more of gas explosion molding, compression molding or injection molding.

Specifically, gas explosion molding is also called explosive molding. It is a high-energy rate forming method that uses explosive materials to release huge chemical energy at the moment of explosion to process blanks. Gas explosion molding can be used for silica gel, rubber, TPU, TPE, etc. The diaphragm 10 made of material can also be molded, and the structure 20 with metal as the main material can also be molded. Therefore, the diaphragm 10 and the structure 20 can be integrally molded at the same time in the process, so that the diaphragm 10 and the structure 20 A continuous integrated structure is formed without adding other media, which not only realizes the combination of the two, but also ensures the concentricity of the vibrating member 100, and also avoids problems such as glue overflow and other poor bonding conditions.

Specifically, the compression molding process uses the characteristics of each stage in the resin curing reaction to achieve product molding, that is, the molding compound is plasticized, flows and fills the cavity, and the resin is cured. When the molding compound is filled with the cavity, not only the resin flows , The reinforcing material also flows along with it, so the molding pressure of the compression molding process is higher than other process methods, which belongs to high-pressure molding. In this embodiment, the structural member 20 can be either a metal member or a composite resin material with higher strength. Through compression molding, it can be divided and filled in an abrasive tool at the same time to complete the integral molding of the diaphragm 10 and the structural member 20. .

Specifically, injection molding is also called injection molding, which is a molding method of injection and molding. The advantages of injection molding method are fast production speed, high efficiency, operation can be automated, variety of colors, shapes can be from simple to complex, size can be from large to small, and the product size is accurate, the product is easy to update, and can be made into complex shapes. Parts, injection molding is suitable for mass production and molding processing fields such as products with complex shapes. In this embodiment, the structural member 20 may be a metal member, or a thermosetting plastic and rubber with higher strength, and the integral molding of the diaphragm 10 and the structural member 20 can be completed at the same time through injection molding.

Specifically, the diaphragm of this embodiment includes a vibrating portion 12, a folding ring portion 13 surrounding and connected to the vibrating portion 12, and a positioning portion 14 surrounding and connected to the folding ring portion. The part 13 is arranged between the vibrating part 12 and the positioning part 14, and the positioning part 14 is connected to the structural member 20 and is integrally formed. The positioning portion 14 of the diaphragm 10 and the structural member 20 are integrally formed by a combination of one or more of gas explosion molding, compression molding or injection molding.

Specifically, the vibrating portion 12 of the diaphragm 10 is a continuous diaphragm medium plane 11. Referring to FIG. 1, the plane of the central area of the diaphragm 10 is the diaphragm medium plane 11, and the bottom of the vibrating portion 12 is connected to the external vibration source In contact, the vibration is a mechanical wave. The wave is transmitted to the diaphragm medium plane 11 through the materials in contact. The diaphragm medium plane 11 vibrates up and down along the normal direction to push the surrounding air medium to wave, thereby producing sound. The central area of the vibrating part 12 is usually provided with other structures such as a dome, a reinforcing material layer of the diaphragm 10, etc. to enhance the sound characteristics of the vibrating part 12. In this embodiment, the vibrating part 12 is considered to have excellent concentricity in an ideal state. Diaphragm medium plane 11, no other strengthening parts are added.

Specifically, the folding ring portion 13 is disposed between the vibrating portion 12 and the positioning portion 14. The folding ring portion 13 is connected with the vibrating portion 12 and the positioning portion 14 to improve the sound effect adjustment. In this embodiment, the folding ring portion 13 adopts conventional settings in the field, and maintains a high product consistency with the vibrating part 12 and the positioning part 14.

Specifically, the structural member 20 may be a limiting member such as a basin frame, a steel ring, and a front cover in the sounder, and the specific structure of the limiting member varies according to different products. The steel ring is uniformly used as an example in the present utility model, but this should not be regarded as a restriction on the protection orientation of the present utility model.

Specifically, the positioning portion 14 includes a first positioning portion 141 and a second positioning portion 142, and the first positioning portion 141 and the vibrating portion 12 are located on the same plane to ensure product consistency. In addition, the first positioning portion 141 is connected to the folding ring portion 13. The second positioning portion 142 extends from the first positioning portion 141 in the direction of the structural member 20, the top of the structural member 20 is connected to the first positioning portion 141, and the outer side of the structural member 20 is connected to the second positioning member 20. The parts 142 are connected, so that the vibrating element 100 eliminates the effect of the glue layer on the concentricity of the vibrating element 100 and the relative deviation of the diaphragm 10 and the structural member 20 due to the fluidity of the glue layer.

Specifically, the second positioning portion 142 is perpendicular to the first positioning portion 141. While the second positioning portion 142 serves as a support, it is integrally formed with the structural member 20 in a direction perpendicular to the first positioning portion 141 to ensure The vibrating element 20 has good concentricity in a direction parallel to the diaphragm 10.

Further, the diaphragm 10 is a quadrilateral, and the quadrilateral is compatible with the outer contour shape of the structural member 20 to ensure that the diaphragm 10 is fully stretched in any direction of the plane when the diaphragm 10 is integrally formed on the structural member 20. The second positioning portion 142 includes a first side wall 1421 and a second side wall 1422. The first side wall 1421 is two side walls that are relatively parallel, and the second side wall 1422 is also two sides that are relatively parallel. wall. The first side wall 1421 and the second side wall 1422 are connected end to end and are relatively vertical, so that the structural member 20 and the diaphragm 10 can be aligned by mutually perpendicular or parallel side walls during the integral molding process to improve the diaphragm 10 The accuracy of the combination with the structural member 20 during the integral molding process.

Specifically, the structural member 20 includes a first supporting portion 21 connected to the first positioning portion 141 and a second supporting portion 22 connected to the second positioning portion 142. The first positioning portion 141 It is connected to the first support portion 21 by integral molding, the second support portion 142 and the second positioning portion 142 are connected by integral molding, the first support portion 21 and the second support portion 22 are perpendicular to each other, and The first supporting portion 21 is on the same plane as the vibrating portion 12 of the diaphragm 10, so that when the structural member 20 and the diaphragm 10 are integrally formed, the second supporting portion 22 is located outside the structural member 20 and located inside the positioning portion 14. The second positioning portion 142 is attached to each other, so that the first support portion 21 and the second support portion 22 can accurately position the diaphragm 10, and the two are directly in structural contact, and are formed through an integral molding process to avoid gluing The influence of the layer on the accuracy ensures the consistency of the vibrating parts.

Specifically, the outer contour of the structural member 20 is a quadrilateral, and the shape of the quadrilateral is adapted to the shape of the diaphragm 10, so that the outer contour of the positioning portion 14 corresponds to the outer contour of the structural member 20, so that the two are seamless. The integral molding keeps the consistency of the product while ensuring the beauty of the product. The second supporting portion 22 includes a third side wall 221 parallel to the first side wall 1421 and a fourth side wall 222 parallel to the second side wall, the third side wall 221 and the fourth side wall 222 Connected end to end, so that the inner side of the positioning portion 14 of the diaphragm 10 corresponds to the outer side of the structural member 20, so that the first side wall 1421 and the third side wall 221 that are opposite in parallel are attached to each other, and the second side wall is connected to the 1422 second side wall. The four side walls 222 are attached to achieve precise positioning of the diaphragm 10 and the structural member 20 in the integral molding process. The structural accuracy of the positioning portion 14 and the structural member 20 ensures the concentricity of the vibrating portion 14 relative to the vibrating member 100, thereby ensuring The consistency of the product improves the acoustic performance of the speaker.

Therefore, the present invention integrates the structure of the vibrating part and the positioning part of the diaphragm directly through gas explosion molding, compression molding or injection molding, so that the diaphragm and the structure are not affected by other media. Direct molding ensures the concentricity of the vibrating part, avoids the influence of the existing glued layer on the concentricity, and improves the stability and consistency of product performance.

The above are only the embodiments of the present utility model. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present utility model, but these all belong to The scope of protection of the utility model.

Claims

A loudspeaker vibrating member, comprising a vibrating membrane and a structural member, characterized in that the vibrating membrane includes a vibrating part, a folding ring part surrounding and connected to the vibrating part, and a folding ring part surrounding and connected to the vibrating part The positioning part, the folding ring part is arranged between the vibrating part and the positioning part, and the positioning part is connected with the structural member and is integrally formed.
The speaker vibrating component according to claim 1, wherein the positioning part and the structural component are integrally formed by a combination of one or more of gas explosion molding, compression molding or injection molding.
The speaker vibrating component according to claim 1, wherein the positioning portion includes a first positioning portion that is located on the same plane as the vibrating portion and connected to the folding ring portion, and is directed from the first positioning portion. For the second positioning portion extending in the direction of the structural member, the top of the structural member is connected with the first positioning portion, and the outer side of the structural member is connected with the second positioning portion.
The speaker vibrating member according to claim 3, wherein the second positioning portion is perpendicular to the first positioning portion.
The speaker vibrator according to claim 3, wherein the diaphragm is quadrilateral, and the second positioning portion includes a first side wall arranged in parallel and a first side wall connected to the first side wall and arranged relatively perpendicularly. The second side wall, the first side wall and the second side wall are connected end to end.
The speaker vibrator according to claim 5, wherein the structural member includes a first support part connected with the first positioning part and a second support connected with the second positioning part Part, the second support part is located outside the structural member.
The loudspeaker vibrating element according to claim 6, wherein the outer contour of the structural element is quadrilateral, and the second supporting portion includes a third side wall parallel to the first side wall and a second side wall parallel to the second side wall. A fourth side wall with parallel side walls, and the third side wall and the fourth side wall are connected at the end.
The loudspeaker vibrating component according to claim 1, wherein the material of the diaphragm is a combination of one or more of silicon rubber, TPU, and TPE.