CN106028234B

CN106028234B - Vibrating diaphragm and loudspeaker monomer

Info

Publication number: CN106028234B
Application number: CN201610379451.XA
Authority: CN
Inventors: 刘岩涛; 程汉龙
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2016-05-31
Filing date: 2016-05-31
Publication date: 2021-08-31
Anticipated expiration: 2036-05-31
Also published as: CN106028234A

Abstract

The invention relates to a diaphragm and a loudspeaker unit, which comprise metal wires arranged on the diaphragm, wherein the metal wires are distributed in the peripheral direction of the diaphragm, and each metal wire extends to a part of a vibration part from a connecting part of the diaphragm. The vibrating diaphragm can be attached to the shell of the single loudspeaker body through the connecting part, and the metal wire extends to the vibrating part from the position of the connecting part, so that the heat inside the single loudspeaker body can be transferred to the shell matched with the connecting part of the vibrating diaphragm through the metal wire on the vibrating diaphragm, the heat inside the single loudspeaker body can be transferred to the outside of the single loudspeaker body, good heat dissipation of the single loudspeaker body is realized, and the performance of the single loudspeaker body is ensured. Set up the wire on the vibrating diaphragm, can also strengthen the toughness and the intensity of vibrating diaphragm, effectively prevented losing of vibrating diaphragm, improved the life of vibrating diaphragm.

Description

Vibrating diaphragm and loudspeaker monomer

Technical Field

The invention relates to the field of sound production devices, in particular to a vibrating diaphragm and a loudspeaker unit using the vibrating diaphragm.

Background

A loudspeaker is an important acoustic component in electronic equipment, which is a transducer device that converts an electrical signal into an acoustic signal. The loudspeaker unit comprises a shell assembly, a magnetic circuit assembly, a vibration assembly and the like, wherein the magnetic circuit assembly, the vibration assembly and the like are arranged in the shell assembly. When the vibration component works, the vibration component vibrates under the action of the magnetic circuit component, so that sound is generated.

However, in the conventional loudspeaker, the voice coil in the vibration assembly generates heat in the process of electrifying and vibrating, and if the heat is not dissipated, the reliability and the performance of the loudspeaker are seriously affected, and the service life of the loudspeaker is reduced. However, the voice coil is only mechanically connected to the diaphragm, which makes it impossible for the voice coil to dissipate heat through the diaphragm.

Disclosure of Invention

An object of the present invention is to provide a diaphragm.

According to an aspect of the present invention, there is provided a diaphragm including a vibrating portion at a middle portion, a connecting portion at an edge, and a corrugated portion between the vibrating portion and the connecting portion; the vibrating diaphragm further comprises metal wires arranged on the vibrating diaphragm, the metal wires are distributed in the peripheral direction of the vibrating diaphragm, and each metal wire extends to a part of the vibrating portion from the connecting portion of the vibrating diaphragm.

Optionally, the metal wire extends from the connecting portion of the diaphragm to at least a position on the vibrating portion for connecting the voice coil.

Optionally, the metal wire is disposed on the upper surface and/or the lower surface of the diaphragm.

Optionally, the metal wire is disposed inside the diaphragm.

According to another aspect of the present invention, there is also provided a speaker unit, which includes the diaphragm.

Optionally, the pot comprises a shell and a pot frame arranged at the lower end of the shell, wherein a central magnet, a side magnet, a central washer and a side washer are arranged on the pot frame, the central washer and the side washer are respectively arranged at the upper ends of the central magnet and the side magnet, and a magnetic gap is formed between the central magnet and the side magnet; the vibrating diaphragm is fixed at the upper end of the shell through the connecting parts of the vibrating diaphragm, the lower end of the vibrating diaphragm is connected with a voice coil, and the lower end of the voice coil extends into the magnetic gap.

Optionally, the vibration isolator further comprises a metal cover, and the edge of the metal cover covers the upper end of the vibration diaphragm connecting part.

Optionally, an insulating portion is disposed between the metal cover and the diaphragm.

Optionally, a dome structure is further disposed on the vibrating portion of the diaphragm.

The vibrating diaphragm can be attached to the shell of the single loudspeaker body through the connecting part, and the metal wire extends to the vibrating part from the position of the connecting part, so that the heat inside the single loudspeaker body can be transferred to the shell matched with the connecting part of the vibrating diaphragm through the metal wire on the vibrating diaphragm, the heat inside the single loudspeaker body can be transferred to the outside of the single loudspeaker body, good heat dissipation of the single loudspeaker body is realized, and the performance of the single loudspeaker body is ensured. Set up the wire on the vibrating diaphragm, can also strengthen the toughness and the intensity of vibrating diaphragm, effectively prevented losing of vibrating diaphragm, improved the life of vibrating diaphragm. Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a diaphragm according to the present invention.

Fig. 2 is a cross-sectional view of the speaker cell of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1, the present invention provides a diaphragm 8 including a vibrating portion 83 at a middle portion, a connecting portion 81 at an edge, and a corrugated portion 82 between the vibrating portion 83 and the connecting portion 81. The connecting portion 81, the loop portion 82, and the vibrating portion 83 are integrally molded. When the speaker unit is assembled, the diaphragm 8 is attached to the housing of the speaker unit through the connecting portion 81 thereof, so that the diaphragm 8 is integrally supported above the cavity of the housing; the diaphragm 8 emits corresponding sound by the vibration of its vibrating portion 83; the vibration performance of the vibration part 83 can be effectively improved by the corrugated part 82 located between the vibration part 83 and the connection part 81, and the structure of the diaphragm and the manufacturing process thereof are well known to those skilled in the art and will not be described in detail herein.

The diaphragm of the present invention further includes metal wires 84 densely distributed on the diaphragm 8, and these metal wires 84 are distributed in the peripheral direction of the diaphragm 8, and preferably uniformly distributed in the peripheral direction of the diaphragm 8. Each wire 84 extends from the position of the connection portion 81 of the diaphragm 8 up to a part of the vibrating portion 83. Preferably, the wire 84 extends from the connection portion 81 of the diaphragm 8 to at least a position on the vibration portion 83 for connecting a voice coil. The wires 84 are preferably made of a material having good thermal conductivity and high elongation, which are well known to those skilled in the art and will not be described herein.

In a specific embodiment of the present invention, the metal wire 84 may be disposed on the upper surface and/or the lower surface of the diaphragm 8, or may be disposed inside the diaphragm 8, for example, when the layers of the diaphragm 8 are combined, the metal wire 84 may be disposed on one of the intermediate layers, and finally the layers are combined together.

As described above, the diaphragm 8 can be attached to the housing of the speaker unit through the connecting portion 81 thereof, and the metal wire extends from the position of the connecting portion 81 to the vibrating portion 83, so that the heat inside the speaker unit can be transferred to the housing having a matching relationship with the diaphragm connecting portion 81 through the metal wire 84 on the diaphragm 8, and thus the heat inside the speaker unit can be transferred to the outside of the speaker unit, thereby achieving good heat dissipation of the speaker unit and ensuring the performance of the speaker unit. Simultaneously, set up the wire on vibrating diaphragm 8, can also strengthen the toughness and the intensity of vibrating diaphragm, effectively prevented losing of vibrating diaphragm, improved the life of vibrating diaphragm.

Referring to fig. 2 and 3, the present invention also provides a speaker unit including a housing assembly, a magnetic circuit assembly, a vibration assembly, and the like. The shell assembly comprises a shell 2 and a basin frame 1 arranged at the lower end of the shell 2, wherein the shell 2 is provided with a hollow cavity for accommodating all devices of the loudspeaker monomer. The magnetic circuit component is positioned in the cavity of the shell 2 and comprises a central magnet 3 and a side magnet 5 which are arranged on the basin frame 1, and a central washer 4 and a side washer 6 which are respectively arranged at the upper ends of the central magnet 3 and the side magnet 5. The side magnets 5 are disposed outside the center magnet 3, and a magnetic gap is formed between the center magnet 3 and the side magnets 5.

The vibration component comprises the vibrating diaphragm 8, the vibrating diaphragm 8 can be attached to the upper end of the shell 2 through the connecting portion 81 of the vibrating diaphragm 8, the lower end of the vibrating diaphragm 8 is connected with the voice coil 7, the upper end of the voice coil 7 is connected to the position of the vibrating portion 83 of the vibrating diaphragm 8, and the other end of the voice coil extends into the magnetic gap.

After the voice coil 7 is powered on, the voice coil 7 vibrates at different frequencies under the action of the magnetic circuit component, so that the vibration part 83 connected with the voice coil 7 is driven to vibrate, and the sound of the loudspeaker single body is realized. In order to improve the vibration performance of the diaphragm 8, a dome structure 9 may be provided on the diaphragm 8, which is common knowledge of those skilled in the art and will not be described in detail herein.

Since the voice coil 7 is the main source of heat inside the speaker unit, the wire 84 on the diaphragm 8 extends from the position of the connection portion 81 to at least the position on the vibration portion 83 for connecting the voice coil 7. The present invention preferably further comprises a metal cover 10, wherein the edge of the metal cover 10 covers the upper end of the connecting portion 81 of the diaphragm 8. This allows the heat generated by voice coil 7 to be directly transferred to metal cover 10 located outside through wire 84.

In order to prevent the short circuit of the wire 84, an insulating portion is preferably provided between the metal cover 10 and the diaphragm 8, especially when the wire 84 is provided on the outer surface of the diaphragm 8. The voice coil 7 itself takes the form of an enameled wire, so that the wire 84 is not made conductive even if the wire is in direct contact with the voice coil 7.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A diaphragm (8), characterized in that: comprises a vibrating part (83) positioned in the middle, a connecting part (81) positioned at the edge and a ring folding part (82) positioned between the vibrating part (83) and the connecting part (81); the vibrating diaphragm is characterized by further comprising metal wires (84) arranged on the vibrating diaphragm (8), wherein the metal wires (84) are distributed in the peripheral direction of the vibrating diaphragm (8), and each metal wire (84) extends from the connecting portion (81) of the vibrating diaphragm (8) to a part of the vibrating portion (83).

2. A diaphragm (8) as claimed in claim 1, wherein: the wire (84) extends from the connection portion (81) of the diaphragm (8) at least to a position on the vibration portion (83) for connecting a voice coil.

3. A diaphragm (8) as claimed in claim 1, wherein: the metal wire (84) is arranged on the upper surface and/or the lower surface of the diaphragm (8).

4. A diaphragm (8) as claimed in claim 1, wherein: the wire (84) is arranged inside the diaphragm (8).

5. A speaker cell, comprising: comprising a diaphragm (8) according to any one of claims 1 to 4.

6. The speaker cell of claim 5, wherein: the pot comprises a shell (2) and a pot frame (1) arranged at the lower end of the shell (2), wherein a central magnet (3), a side magnet (5), a central washer (4) and a side washer (6) are arranged on the pot frame (1) and are respectively arranged at the upper ends of the central magnet (3) and the side magnet (5), and a magnetic gap is formed between the central magnet (3) and the side magnet (5); the vibrating diaphragm (8) is fixed at the upper end of the shell (2) through a connecting part (81), a voice coil (7) is connected to the lower end of the vibrating diaphragm (8), and the lower end of the voice coil (7) extends into the magnetic gap.

7. The speaker cell of claim 6, wherein: the vibrating diaphragm is characterized by further comprising a metal cover body (10), wherein the edge of the metal cover body (10) covers the upper end of the connecting portion (81) of the vibrating diaphragm (8).

8. The speaker cell of claim 7, wherein: an insulating part is arranged between the metal cover body (10) and the vibrating diaphragm (8).

9. The speaker cell of claim 6, wherein: and a ball top structure (9) is also arranged on the vibration part (83) of the vibrating diaphragm (8).