WO2013107071A1

WO2013107071A1 - Acoustic generator

Info

Publication number: WO2013107071A1
Application number: PCT/CN2012/071359
Authority: WO
Inventors: 赵国栋; 金圭东; 姜俊求; 蔡晓东; 朱跃光
Original assignee: 歌尔声学股份有限公司
Priority date: 2012-01-19
Filing date: 2012-02-20
Publication date: 2013-07-25
Also published as: KR20140097487A; CN102572658A; CN102572658B; KR101570760B1

Abstract

Disclosed is an acoustic generator. The acoustic generator comprises a vibrating system which comprises a vibrating diaphragm and a voice coil cylinder. One end of the voice coil cylinder is fixedly combined with the vibrating diaphragm and is used as the leading-out end of a leading wire of the voice coil cylinder; a reinforced part is arranged in the position on the vibrating diaphragm, which corresponds to the leading-out of the leading wire; the leading-out end of the leading wire is positioned underneath the reinforced part; and the reinforced part extends in the along-wire direction of the leading wire. In the design of the present invention, because the reinforced part is arranged above the leading-out position of the leading wire, and the reinforced part extends towards the along-wire direction of the leading wire, the leading wire is prevented from bending with the vibration of the vibrating diaphragm when the leading wire vibrates, thereby making the leading wire vibrate in parallel with the reinforced part, preventing the leading wire from generating the defects of wire bending and breaking, poor electric conductivity, etc. in the working process of the acoustic generator, and ensuring the reliability of the acoustic generator.

Description

Sounder

The present invention relates to the field of electroacoustic conversion technology, and in particular, to a sound generator capable of preventing wire breakage and ensuring stability of electrical connection.

With the rapid development of the consumer electronics market, a large number of miniature electro-acoustic components, such as micro-coiled sounders, have been widely used. With the portable design of the terminal products, the acoustic performance of the product is continuously improved, such as high sensitivity, low distortion design, and the reliability indicators such as avoiding lead disconnection of the product meet higher requirements.

In the traditional design, the lead wire of the voice coil tube generally adopts a smoothing process, and the lead wire is fixed on the surface of the diaphragm by glue. This design increases the straight process and the production process is complicated. In the improvement of the above conventional design, the defects caused by the above-described smoothing process are avoided by using the suspended leads. However, in the above two well-known techniques, in the vibration process of the sounder, the lead and the diaphragm vibrate synchronously, and the vibration of the diaphragm causes the lead to bend, which may easily cause a disconnection problem, thereby causing poor electrical connection of the sounder. Affect the reliability of the sounder.

Therefore, it is necessary to improve the existing sounder to avoid the above drawbacks.

technical problem

The technical problem to be solved by the present invention is to provide a sounder which can avoid the defects that the lead wire is broken during the operation of the sounder, resulting in poor electrical connection.

Technical solution

In order to solve the above technical problem, the technical solution provided by the present invention is: a sound generator including a vibration system, the vibration system including a diaphragm and a voice coil cylinder, one end of the voice coil cylinder being fixedly coupled with the diaphragm and The end serves as an outlet end of the voice coil tube lead, wherein: a position of the diaphragm corresponding to the lead outgoing line is provided with a reinforcing portion; an outgoing end of the lead is located below the reinforcing portion, and the reinforcing portion Extending along the direction of the lead.

As a refinement, the diaphragm comprises a hollow edge portion and a rigid intermediate portion, the intermediate portion forming the reinforcement portion.

As an improvement, the diaphragm is a unitary structure, and a composite layer is disposed in a middle portion of the diaphragm, and the composite layer forms the reinforcing portion.

As an improvement, the lead wire is compliant from the outside of the body of the voice coil cylinder, and the edge of the reinforcing portion extends beyond the outer edge of the voice coil cylinder.

As an improvement, the lead wire is compliant from the inside of the voice coil cylinder, and the edge of the reinforcing portion is located in a projection area of the inner edge of the voice coil cylinder on the diaphragm.

As a modification, the reinforcing portion is annular.

As a refinement, the reinforcement is partially provided.

As an improvement, the reinforcing portions are one or more.

As a modification, the intermediate portion is rectangular.

As a modification, the reinforcing portions are four and are disposed at the four corners of the intermediate portion.

By adopting the above technical solution, the sound generator according to the present invention has a reinforcing portion disposed above the outlet position of the lead wire, and the reinforcing portion extends toward the straight line direction of the lead wire, so that the lead wire avoids the vibration of the diaphragm following the vibration when the lead wire vibrates. The bending is generated, so that the lead wire can follow the parallel vibration of the reinforcing portion, and the defects such as bending breakage and poor electrical conduction caused by the lead wire during the working of the sounder are avoided, and the reliability of the sounder is ensured.

DRAWINGS

1 is an exploded perspective view of a sound generator according to Embodiment 1 of the present invention;

2 is a schematic structural view of an intermediate portion according to Embodiment 1 of the present invention;

Figure 3 is a plan view of a vibration system according to a first embodiment of the present invention;

Figure 4 is a partial enlarged view of the portion A shown in Figure 3;

Figure 5 is a plan view of a vibration system according to a modification of the embodiment of the present invention;

Figure 6 is a plan view of a vibration system according to a second embodiment of the present invention;

Figure 7 is a plan view of a vibration system according to a third embodiment of the present invention;

Figure 8 is a plan view of a vibration system according to a third modification of the embodiment of the present invention;

Figure 9 is a plan view of a vibration system according to a fourth embodiment of the present invention;

Figure 10 is a plan view of a vibration system according to a fourth modification of the fourth embodiment of the present invention;

Figure 11 is a cross-sectional view showing a vibration system according to a fifth embodiment of the present invention;

Figure 12 is a plan view of a vibration system according to a fifth embodiment of the present invention;

Figure 13 is a cross-sectional view showing a vibration system according to a sixth embodiment of the present invention;

Figure 14 is a cross-sectional view showing a sound generator according to a seventh embodiment of the present invention.

Embodiments of the invention

The specific structure of the present invention will be described in detail below with reference to the accompanying drawings.

Embodiment 1:

1 is a schematic exploded view of a sound generator according to a first embodiment of the present invention; FIG. 2 is a schematic structural view of an intermediate portion according to a first embodiment of the present invention; FIG. 3 is a plan view of a vibration system according to a first embodiment of the present invention; A partially enlarged schematic view of a portion A shown in FIG. As shown in FIGS. 1 to 4, the sound generator includes a vibration system, a magnetic circuit system, and an auxiliary system that houses the fixed vibration system and the magnetic circuit system. The vibration system includes a diaphragm and a voice coil cylinder 22 coupled to the lower side of the diaphragm, and the diaphragm is driven by the voice coil cylinder 22 to vibrate during the operation of the sound generator. The magnetic circuit system includes a washer 31, a magnet 32, and a basin frame 33 that are sequentially coupled, and the magnetic circuit system forms a magnetic gap that houses the voice coil cylinder 22. The auxiliary system includes a housing 12 and a cover 11 that is attached to the housing 12. In addition, an electrical connection device 4 electrically connecting the internal circuit of the sounder and the external circuit is also included. In the present embodiment, the electrical connection device 4 is an elastic sheet structure and is fixed to the housing 12.

The diaphragm includes an intermediate portion 23 at a central position and a hollow edge portion 21a at the edge position, wherein the intermediate portion 23 is preferably a material having a certain rigidity to ensure high frequency sound effects of the sounder. The intermediate portion 23 further includes a fixing groove 231 at the center and a connecting portion 232 at the edge. The fixing groove 231 can further increase the rigidity of the intermediate portion while also facilitating the positioning assembly of the intermediate portion. The upper side of the connecting portion 232 is fixedly coupled to the inner edge of the edge portion 21a, and the lower side of the connecting portion 232 is fixedly coupled to the voice coil barrel 22. The lead wire 24 of the voice coil cylinder 22 is taken out from the end where the voice coil cylinder 22 is joined to the connecting portion 232, and the lead wire 24 is slid from the outside of the body of the voice coil cylinder 22. A reinforcing portion 25a formed by the intermediate portion 23 is provided above the outlet position of the lead wire 24, wherein the reinforcing portion 25a is formed by the intermediate portion 23 partially extending in the direction of the straight line of the lead wire 24, and the outer edge size thereof is larger than the outer edge of the voice coil barrel 22. size.

With such a design in which the reinforcing portion 25a is provided on the rigid intermediate portion 22, the lead wire 24 prevents the lead wire 24 from following the vibration of the diaphragm to cause bending when vibrating, so that the lead wire 24 can vibrate in parallel with the reinforcing portion 25a, thereby avoiding the lead wire 24 Defects such as bending breaks and poor electrical conduction caused by the sounder working process ensure the reliability of the sounder;

In the present embodiment, the intermediate portion 22 has a rectangular structure, and the reinforcing portion 25a is provided at the four corner portions of the rectangular intermediate portion 22. In the present embodiment, the lead wires 24 are bonded to the two reinforcing portions 25a at both ends of one short axis of the intermediate portion 22. With this design, it is possible to follow the line according to the specific straight line requirement of the sound generator on the short-axis side.

Figure 5 is a plan view of a vibration system according to a modification of the embodiment of the present invention. As shown in FIG. 5, in order to meet different alignment requirements, in the present modification, the lead wires 24 are coupled to the two reinforcing portions 25a corresponding to both ends of a long axis of the rectangular intermediate portion 22. With this improved design, the lead wire avoids the lead to follow the vibration of the diaphragm when the vibration is vibrated, so that the lead can follow the parallel vibration of the reinforcing portion, thereby avoiding the bending breakage, poor electrical conduction, etc. caused by the lead during the operation of the sound generator. defect. In addition, with this design, the design requirements of the outlet end of the voice coil cylinder on the long axis side can be satisfied. At the same time, it is also possible to meet the sleek design requirements of the lead wires 24 in the long axis direction of the voice coil cylinder 22.

Embodiment 2:

Fig. 6 is a plan view showing a vibration system according to a second embodiment of the present invention. As shown in FIG. 6, the main difference between this embodiment and the first embodiment is that the position and number of the reinforcing portions 25b are different. In the present embodiment, two reinforcing portions 25b are provided at diagonal positions of the rectangular intermediate portion 23, and the lead wires 24 are respectively lined from the two reinforcing portions 25b. The technical effect of the first embodiment can also be achieved by the implementation process, and the sounder can be designed in the diagonal direction in this embodiment. In this embodiment, another pair of corners may be selected for the straight line design.

Embodiment 3:

Fig. 7 is a plan view showing a vibration system according to a third embodiment of the present invention. As shown in Fig. 7, the main difference between this embodiment and the above embodiment is that the number of reinforcing portions 25c is different from that of the position. In the present embodiment, the reinforcing portion 25c is one and is disposed on one axial side of the rectangular intermediate portion 23c, and is preferably disposed at the center of one axial side of the intermediate portion 23c in the present embodiment to ensure balance. This embodiment can also achieve the technical effects of the above embodiments, and can meet more production design requirements.

Figure 8 is a plan view of a vibration system according to a third modification of the embodiment of the present invention. As shown in FIG. 8, the main difference between the present modification and the above technical solution is that the reinforcing portion 25c is annular. The present modification can also achieve the above technical effects; and the position of the lead 24 is not limited.

Embodiment 4:

Fig. 9 is a plan view showing a vibration system according to a fourth embodiment of the present invention. As shown in FIG. 9, the main difference between this embodiment and the above embodiment is that in the present embodiment, the intermediate portion 24 is circular, the reinforcing portion 25d is two, and is partially disposed at the intermediate portion 24. In the embodiment, when the lead wire vibrates, the lead wire is prevented from following the vibration of the diaphragm to cause bending, so that the lead wire can follow the reinforcing portion to vibrate in parallel, thereby avoiding bending breakage, poor electrical conduction, etc. caused by the lead wire during the operation of the sound generator. defect. In addition, with this design, the design requirements of the outlet end of the voice coil cylinder on the long axis side can be satisfied. At the same time, it is also possible to meet the sleek design requirements of the lead wires 24 in the long axis direction of the voice coil cylinder 22. At the same time, this embodiment can satisfy the implementation of the circular sounder product structure for the creation of the present invention.

Figure 10 is a plan view of a vibration system according to a fourth modification of the fourth embodiment of the present invention. As shown in Fig. 10, in the present modification, the reinforcing portion 25d is annular. The present improvement can also achieve the technical effects created by the present invention.

Embodiment 5:

Figure 11 is a cross-sectional view showing a vibration system according to a fifth embodiment of the present invention, and Figure 12 is a plan view showing a vibration system according to a fifth embodiment of the present invention. As shown in Figs. 11 and 12, the main difference between this embodiment and the above embodiment is that the structure of the vibration system is different. In the present embodiment, the edge portion 21b is a base material formed of an integral structure, and a composite layer 26 is provided in the middle of the edge portion 21b, the composite layer 26 reinforces the edge portion 21b, and a reinforcing portion 25e is formed in the reinforcing portion of the edge portion 21b. . In the present embodiment, the edge portion 21b is an edge convex structure, and the lead wire 24 is taken out from the lower side of the edge portion 21b. With this design, the technical effects created by the present invention can also be achieved, and the composite layer can select a plurality of materials to meet more design requirements. In the present embodiment, the reinforcing portion 25e is preferably a ring structure, and may be partially disposed by changing the structure of the composite layer 26.

Example 6:

Figure 13 is a cross-sectional view showing a vibration system according to a sixth embodiment of the present invention. As shown in Fig. 13, the main difference between this embodiment and the above embodiment is that the structure of the vibration system is different. In the present embodiment, the edge portion 21c is an edge recessed structure, and the composite layer 26 is disposed at the center of the edge portion 21c and forms a reinforcing portion 25f from which the lead wire 24 is routed. With the design of the embodiment, the technical effect created by the present invention can also be achieved, and the vibration system structure reduces the product height and satisfies more product design requirements.

Example 7:

Figure 14 is a cross-sectional view showing a sound generator according to a seventh embodiment of the present invention. As shown in FIG. 14, the main difference between this embodiment and the above embodiment is that the leads are different in the direction of the line. In the present embodiment, the lead wire 24 is lined up from the inside of the voice coil cylinder 22, the reinforcing portion 25g is formed by the rigid intermediate portion 23 and the edge portion 21a, and the lead wire 24 is connected to the outside of the sound generator by the hollow on the magnet 32, wherein the reinforcing portion The edge of 25g is located at the inner edge of the voice coil cylinder 22 at the edge portion 21 Within the projection area on a. With the design of this embodiment, the technical effects created by the present invention can also be achieved. In addition, in the present embodiment, the composite layer structure can also be used for reinforcement without affecting the implementation of the present invention.

The above is only a specific embodiment of the invention. The number and position of the reinforcing portions and the structure of the diaphragm in the present embodiment do not affect the implementation of the present invention. The above embodiments are not intended to limit the present invention, but the prior art is common. Equivalent modifications or variations made by persons in light of the present disclosure are intended to be included within the scope of the appended claims.

Claims

A sound generator includes a vibration system including a diaphragm and a voice coil cylinder, one end of the voice coil cylinder is fixedly coupled to the diaphragm and the end serves as an outlet end of the voice coil barrel lead, and is characterized The reinforcing film is provided at a position corresponding to the lead wire on the diaphragm; the wire end of the lead is located below the reinforcing portion, and the reinforcing portion extends along a direction of the lead.
A sound generator according to claim 1, wherein said diaphragm comprises a hollow edge portion and a rigid intermediate portion, said intermediate portion forming said reinforcing portion.
A sound generator according to claim 1, wherein said diaphragm is of a unitary structure, and a composite layer is provided in a central portion of said diaphragm, said composite layer forming said reinforcing portion.
A sound generator according to any one of claims 1 to 3, wherein said lead wire is compliant from the outside of the body of the voice coil cylinder, and an edge of said reinforcing portion exceeds an outer edge of said voice coil cylinder.
A sound generator according to any one of claims 1 to 3, wherein the edge of the reinforcing portion is located in a projection area of the inner edge of the voice coil cylinder on the diaphragm.
A sound generator according to any one of claims 1 to 3, wherein the reinforcing portion is annular.
A sound generator according to any one of claims 1 to 3, wherein the reinforcing portion is partially provided.
The sound generator according to claim 7, wherein the reinforcing portion is one or more.
A sound generator according to claim 2, wherein said intermediate portion is rectangular.
The sound generator according to claim 9, wherein the reinforcing portions are four and are disposed at four corners of the intermediate portion.