WO2015032085A1

WO2015032085A1 - Acoustic metal diaphragm

Info

Publication number: WO2015032085A1
Application number: PCT/CN2013/083122
Authority: WO
Inventors: 温增丰
Original assignee: 东莞泉声电子有限公司
Priority date: 2013-09-09
Filing date: 2013-09-09
Publication date: 2015-03-12

Abstract

An acoustic metal diaphragm comprises a diaphragm base material (10) and a metal coating layer (20). The metal coating layer (20) covers the surface of the diaphragm base material (10), and the metal coating layer (20) is made of pure beryllium or beryllium alloy material; thereby the metal coating layer (20) is formed by evaporating the pure beryllium or beryllium alloy material on the surface of the diaphragm base material (10). Thus, both the rigidity of the diaphragm base material (10) is increased and the softness of the diaphragm base material (10) is maintained by using the metal coating layer (20). Moreover, the bandwidth is wide and the problem with respect to the high frequency is well resolved, and thereby the sound quality is better. The acoustic metal diaphragm is widely applied to various acoustic devices such as earphones, earplugs, loudspeakers, microphones, and so on.

Description

Acoustic metal diaphragm

Technical field

The invention relates to the field of diaphragm technology, in particular to an acoustic metal diaphragm.

Background technique

The diaphragm is an important component between various acoustic devices such as earplugs, earphones, and microphones. The existing diaphragm usually uses a material to form a single layer of diaphragm. When the acoustic device emits sound, it usually has high frequency and Low frequency, in order to solve the high frequency problem of acoustic equipment, the traditional solution is to print on the diaphragm to enhance the rigidity of the diaphragm. However, in this way, the softness and rigidity of the diaphragm cannot be better. The balance of the ground, so that the frequency response of the acoustic device is not wide enough, the sound quality is not good enough.

Summary of the invention

In view of this, the present invention is directed to the absence of the prior art, and its main object is to provide an acoustic metal diaphragm, which can effectively solve the problem that the existing diaphragm can not maintain the softness of the diaphragm by the printing method, and the sound quality of the acoustic device is not enough. Good question.

In order to achieve the above object, the present invention adopts the following technical solutions:

An acoustic metal diaphragm comprising a diaphragm substrate and a metal plating layer covering the surface of the diaphragm substrate, the metal plating layer being pure tantalum or niobium alloy material.

As a preferred embodiment, the diaphragm substrate is a film.

As a preferred solution, a copper ring is further included, and an outer edge of the diaphragm substrate and an outer edge of the metal plating layer are connected to an inner edge of the copper ring.

As a preferred solution, the copper ring has a square cross section.

The present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solutions:

By depositing a metal plating layer on the surface of the diaphragm substrate by using a pure tantalum or niobium alloy material, the metal plating layer increases the rigidity of the diaphragm substrate and maintains the softness of the diaphragm substrate. The frequency bandwidth can solve the high frequency problem well, which is beneficial to the sound quality, and is widely used in various acoustic devices such as earphones, earplugs, speakers, and microphones.

DRAWINGS

Figure 1 is a plan view of a preferred embodiment of the present invention;

Figure 2 is a cross-sectional view of a preferred embodiment of the present invention.

Description of the figure:

10. Diaphragm substrate 20, metal plating

30, copper ring

detailed description

Referring to Figures 1 and 2, there is shown a specific structure of a preferred embodiment of the present invention comprising a diaphragm substrate 10 and a metal coating 20.

The diaphragm substrate 10 is a film. The metal plating layer 20 is coated on the surface of the diaphragm substrate 10, and the metal plating layer 20 is made of pure tantalum or niobium alloy. In this embodiment, the surface of the diaphragm substrate 10 is covered by metal evaporation. The metal plating layer 20 as described above can increase the rigidity of the diaphragm substrate 10 and maintain the softness of the diaphragm substrate 10.

In addition, in this embodiment, a copper ring 30 is further included, the copper ring 30 has a square cross section, and the outer edge of the diaphragm substrate 10 and the outer edge of the metal plating layer 20 are both opposite to the inner edge of the copper ring 30. connection.

The design of the present invention focuses on forming a metal plating layer on the surface of the diaphragm substrate by using a pure tantalum or niobium alloy material. Thus, the metal plating layer increases the rigidity of the diaphragm substrate and maintains the diaphragm. The softness of the substrate and the frequency bandwidth can solve the high frequency problem well, which is beneficial to the sound quality, and is widely used in various acoustic devices such as earphones, earplugs, speakers, and microphones.

The above is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still It is within the scope of the technical solution of the present invention.

Claims

An acoustic metal diaphragm, comprising: a diaphragm substrate and a metal plating layer, the metal plating layer covering the surface of the diaphragm substrate, the metal plating layer being pure tantalum or niobium alloy material.

The acoustic metal diaphragm according to claim 1, wherein the diaphragm substrate is a film.

3. The acoustic metal diaphragm of claim 1 further comprising a copper ring, the outer edge of the diaphragm substrate and the outer edge of the metal coating being coupled to the inner edge of the copper ring.

4. Acoustic metal diaphragm according to claim 3, characterized in that the copper ring has a square cross section.