CN210609673U

CN210609673U - Electroacoustic transducer

Info

Publication number: CN210609673U
Application number: CN201921806889.7U
Authority: CN
Inventors: 张韬; 李军; 辛国龙
Original assignee: KING TONE INNOVATION
Current assignee: KING TONE INNOVATION
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-05-22
Anticipated expiration: 2029-10-25

Abstract

The embodiment of the utility model discloses electroacoustic transducer, through setting up electrically conductive connecting piece, electrically conductive connecting piece includes this somatic part and connecting portion, and this somatic part is connected with the voice coil loudspeaker voice coil electricity, and connecting portion are used for being connected with outside signal of telecommunication generator. The main body part and the connecting part are formed into a whole, so that the welding steps of the electroacoustic transducer during installation and use can be reduced, and the production efficiency is improved.

Description

Electroacoustic transducer

Technical Field

The utility model relates to an electroacoustic conversion technology field, concretely relates to electroacoustic converter.

Background

The electroacoustic transducer is connected with the outside by using an electric conductor when in use, so as to receive an external electric signal and convert the electric signal into sound energy. As shown in fig. 1, a part of the electroacoustic transducer 7 in the prior art includes a circuit inside the single body, when such an electroacoustic transducer 7 is installed and used, a pad 6 that is conducted with the circuit inside the single body needs to be disposed on a basin stand or at another position, then two ends of a conductor 8 such as a wire, an FPC, etc. are respectively welded and conducted with the pad 6 on the external electrical signal generator 5 and the pad 6 on the electroacoustic transducer 7 single body, respectively, which is tedious in operation, low in efficiency and high in cost, and the increased welding points increase the probability of circuit damage, and increase the failure rate of the electroacoustic transducer.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present invention provide an electroacoustic transducer, which can reduce the operation steps when the electroacoustic transducer is connected to the outside.

An embodiment of the utility model provides an electroacoustic transducer, include:

a basin stand;

the magnetic circuit system is connected with the basin frame;

the vibration system comprises a vibration diaphragm and a voice coil, the edge of the vibration diaphragm is fixedly connected with the basin frame, and the voice coil is controlled to drive the vibration diaphragm to vibrate; and

and a conductive connector including a body portion configured to be electrically connected to the voice coil and a connection portion connected to the body portion and extending in a direction away from the body portion, the body portion being formed in one body.

Preferably, the conductive connector is an FPC.

Preferably, the electroacoustic converter further comprises:

a bracket configured to connect the frame and the voice coil, the bracket being at least partially made of an elastic material.

Preferably, the body portion is at least partially disposed on the support.

Preferably, the body portion has the same shape as the holder.

Preferably, the body portion is further configured to mechanically connect the frame and the voice coil.

Preferably, the body portion comprises an outer ring and an inner ring connected to each other, the inner ring being configured to mechanically connect with the voice coil, the outer ring being configured to mechanically connect with the frame.

Preferably, the inner ring has a hole formed therein.

Preferably, the magnetic circuit mechanism comprises a magnetic bowl, a central magnet arranged in the center of the magnetic bowl and a side magnet arranged on the edge of the magnetic bowl, and the voice coil is inserted into a magnetic gap formed by the central magnet and the side magnet.

The utility model discloses electroacoustic transducer, through setting up electrically conductive connecting piece, electrically conductive connecting piece includes this somatic part and connecting portion, and this somatic part is connected with the voice coil loudspeaker voice coil electricity, and connecting portion are used for being connected with outside signal of telecommunication generator. The main body part and the connecting part are formed into a whole, so that the welding steps of the electroacoustic transducer during installation and use can be reduced, and the production efficiency is improved.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a prior art electro-acoustic transducer electrically connected to an external electrical signal generator;

fig. 2 is an exploded perspective view of an electroacoustic transducer according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of an electroacoustic transducer according to an embodiment of the present invention;

description of reference numerals:

1-a basin stand; 2-a magnetic circuit system; 21-a magnetic bowl; 22-a central magnet; 23-edge magnets; 24-pole core; 3-a vibration system; 31-a diaphragm; 32-a voice coil; 4-a conductive connection; 41-a body portion; 42-a connecting portion; 5-an electrical signal generator; 6-a pad; 7-an electroacoustic transducer; 8-electrical conductor.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout this specification, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Spatially relative terms, such as "inner," "outer," "below," "lower," "above," "upper," and the like, are used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The electroacoustic transducer is a device for converting acoustic energy into electric energy or converting electric energy into acoustic energy, and it uses electromagnetic induction, electrostatic induction or piezoelectric effect to complete the electroacoustic conversion. The electroacoustic transducer may be a speaker, a receiver, an earphone, etc., and may be disposed within a housing of the device and electrically connected to the electrical signal generator.

The shape of the electroacoustic transducer may be a cylinder, a cube, a sphere or other shapes, which may be selected according to the specific setting conditions of the electroacoustic transducer. In the present embodiment, the electroacoustic transducer is exemplified as a rectangular parallelepiped.

Fig. 2-3 are schematic diagrams of electroacoustic converters according to embodiments of the present invention. As shown in fig. 2 to 3, the electroacoustic transducer of the present embodiment includes a frame 1, a magnetic circuit system 2, a vibration system 3 and a conductive connecting member 4, wherein the vibration system 3 includes a diaphragm 31 and a voice coil 32, an edge of the diaphragm 31 is fixedly connected to the frame 1, and the voice coil 32 drives the diaphragm 31 to vibrate and generate sound according to an electrical signal generated by an external electrical signal generating device and transmitted through the conductive connecting member 4. The conductive connector 4 includes a body portion 41 and a connecting portion 42, the body portion 41 and the connecting portion 42 are integrally formed, the body portion 41 is used for electrically connecting with the voice coil 32, and the connecting portion 42 is connected with the body portion 41 and extends in a direction away from the body portion 41 for connecting with an external electrical signal generating device.

In the electroacoustic transducer, the voice coil 32 is usually a multi-turn coil formed by winding an enameled wire or other conductor on a skeleton, the magnetic circuit system 2 generates a magnetic field, the voice coil 32 is arranged in the magnetic field, when the voice coil 32 is electrified, the voice coil receives force in the magnetic field, and the force is in direct proportion to the current, the length of the lead and the magnetic flux density. When alternating current is conducted to the voice coil 32, according to the left-hand rule, the force-bearing direction of the voice coil 32 changes along with the change of the current direction, and the voice coil 32 makes reciprocating motion to drive the diaphragm 31 to vibrate to push air, so that sound waves are generated.

The diaphragm 31 is configured to vibrate with the movement of the voice coil 32, pushing air to generate sound waves. The diaphragm 31 is disposed opposite to the voice coil 32, and the voice coil 32 is perpendicular to the diaphragm 31. The diaphragm 31 is usually made of a thin sheet material with low density and good rigidity, such as a paper tray, a plastic diaphragm, a glass fiber diaphragm, and the like. The shape of the diaphragm 31 may be circular, rectangular, annular or other shapes, and is generally selected according to the application equipment of the electroacoustic transducer and the shape of the frame 1.

The frame 1 is a support structure in the electroacoustic transducer for supporting the vibration system 3. The frame 1 can be set to be an approximate cylindrical structure, the edge of the vibrating diaphragm 31 is fixedly connected with one end face of the frame 1, and the voice coil 32 and the magnetic circuit system 2 can be set in the cylindrical structure, so that the size of the electroacoustic transducer is reduced, and a certain protection effect can be achieved.

The magnetic circuit system 2 is used for generating a magnetic field, and the magnetic circuit system 2 can be connected with the basin stand 1. The magnetic circuit system 2 comprises a magnetic bowl 21, a central magnet 22 arranged in the center of the magnetic bowl 21 and a side magnet 23 arranged at the edge of the magnetic bowl 21. When the central magnet 22 is a rectangular parallelepiped, the side magnets 23 may be bar magnets, two side magnets 23 may be symmetrically disposed on the outer sides of two opposite sides of the central magnet 22, or the side magnets 23 may be disposed on the outer sides of four sides of the central magnet 22. A certain gap is formed between the side magnet 23 and the center magnet 22, and the voice coil 32 is disposed in the magnetic gap formed between the side magnet 23 and the center magnet 22. Above the central magnet 22 (above in fig. 3), a pole piece 24 may also be provided, the pole piece 24 being made of a magnetically conductive material (e.g., carbon steel) and functioning to conduct magnetism. Above the side magnet 23, a pole piece 24 may be provided.

The conductive connection member 4 is constituted by a circuit formed by a flexible insulating substrate and a conductive medium provided on the substrate, which is made by integral molding. The conductive connecting piece can comprise a single layer of conductive medium and a substrate, or can be a multilayer structure formed by alternately forming multiple layers of conductive medium and substrate, and the surface of the conductive medium can be covered with an insulating protective layer to protect the conductive medium.

The conductive connecting member 4 may be divided into the body portion 41 and the connecting portion 42 according to the connection relationship between the parts of the conductive connecting member 4 and the outside, that is, the body portion 41 and the connecting portion 42 are two regions of the conductive connecting member 4 integrally formed. The body 41 is electrically connected to the voice coil 32, and the connection portion 42 is connected to an external electrical signal generator. The conductive connection 4 is used to transmit an external electrical signal to a lead of the voice coil 32. The conductive connecting member 4 may be FPC or other conductive material, for example, lead wire, enamel wire, flexible conductive polymer, etc. Preferably, the conductive connector 4 is an FPC.

A Flexible Printed Circuit (FPC) is a Flexible Printed Circuit board that is made of a material such as polyimide or polyester film as a base material and a conductive material such as copper deposited on the base material by electrodeposition, plating, or other methods, and has high reliability and excellent characteristics. The high-density light-weight LED lamp has the characteristics of high wiring density, light weight, thin thickness and good bending property.

The body 41 of the FPC may be configured to have a shape corresponding to the shape of the frame 1, and when the frame 1 is a rectangular parallelepiped, the body 41 may be configured to have a rectangular shape. The connecting portion 42 may extend from one or more sides of the rectangle away from the body portion 41, as shown in fig. 2. Since the FPC has good flexibility and high geometric stability, the body portion 41 can also function as a support, so that the voice coil 32 can move up and down (up and down in fig. 3) without large horizontal deviation and without affecting the normal operation of the voice coil 32, the voice coil 32 is always kept in the magnetic gap formed by the magnetic circuit system 2, and the voice coil 32 is prevented from colliding with the frame 1 or the magnetic circuit system 2 during the movement.

Alternatively, the body portion 41 includes an outer ring and an inner ring connected to each other, the outer ring being connected to the frame 1, and the inner ring being connected to the voice coil 32. The outer and inner rings may be closed or partially open rectangles, and a hole is formed in the middle of the inner ring to allow the voice coil 32 to smoothly move in the magnetic gap. The outer ring and the inner ring have a connecting portion 42 therebetween, and the connecting portion 42 may be corrugated, irregularly bent or other shapes, and may be designed by those skilled in the art as needed.

Of course, the holder may be additionally provided in the electroacoustic transducer for supporting and positioning the voice coil 32. The holder is made of an elastic material, such as silicone, Polyimide (PI), Polyetheretherketone (PEEK), Polyetherimide (PEI), etc. The shape of the holder may be set in a conventional manner by a person skilled in the art, and the body portion 41 of the conductive connector 4 may be set in the same or similar shape as the holder and correspondingly set on the holder.

In this embodiment, the mechanical connection modes of the diaphragm 31 and the frame 1, the conductive connecting member 4 and the voice coil 32, and other similar mechanical connection parts 42 may be various, and may be bonded by an adhesive layer, or may be clamped or welded, or any other connection mode capable of achieving the purpose may be applied to this embodiment, which is not limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An electro-acoustic transducer, comprising:

a basin stand;

the magnetic circuit system is connected with the basin frame;

2. The electroacoustic converter of claim 1 wherein said conductive connector is an FPC.

3. The electro-acoustic transducer of claim 1, further comprising:

4. The electroacoustic converter of claim 3 wherein said body portion is at least partially disposed on said frame.

5. The electroacoustic converter of claim 4 wherein the body portion has a shape identical to a shape of the bracket.

6. The electroacoustic converter of claim 1 wherein the body portion is further configured to mechanically couple the frame and the voice coil.

7. The electroacoustic converter of claim 6 wherein the body portion comprises an outer race and an inner race coupled to each other, the inner race configured to mechanically couple to the voice coil, the outer race configured to mechanically couple to the frame.

8. The electroacoustic converter of claim 7 wherein said inner ring has an aperture formed therein.

9. The electroacoustic converter of claim 1 wherein said magnetic circuit system comprises a magnetic bowl, a center magnet disposed at a center of said magnetic bowl, and a side magnet disposed at an edge of said magnetic bowl, said voice coil being inserted in a magnetic gap formed by said center magnet and said side magnet.