CN105828257A

CN105828257A - Loudspeaker

Info

Publication number: CN105828257A
Application number: CN201610333141.4A
Authority: CN
Inventors: 宋倩倩; 李志�
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2016-05-18
Filing date: 2016-05-18
Publication date: 2016-08-03

Abstract

The invention provides a loudspeaker. The loudspeaker comprises a shell, an electric connecting piece fixed on the shell and a vibration system accommodated in the shell, wherein the vibration system comprises an annular-structure damper and a voice coil framework suspended in the shell through the centering disk; voice coil framework welding pads are symmetrically arranged on the voice coil framework, and sputtering pieces corresponding to the positions of the voice coil framework welding pads are arranged on the damper; the sputtering pieces are respectively communicated with the voice coil framework welding pads and the electric connecting piece. By utilizing the loudspeaker, an ultra-thin design of the loudspeaker can be achieved, and stability and reliability of products are ensured.

Description

Loudspeaker

Technical Field

The invention relates to the technical field of acoustics, in particular to a loudspeaker.

Background

A speaker plays an indispensable role in a sound reproduction system as a common electroacoustic transducer device for converting electric energy into acoustic energy. The loudspeaker is the weakest component in the sound reproduction system, and is the most important component for the sound reproduction effect. The loudspeaker has various types, and audio electric energy enables a cone or a diaphragm to vibrate and generate resonance with surrounding air to make sound through electromagnetic, piezoelectric or electrostatic effects. Therefore, people can hear wonderful sound just with the appearance of the loudspeaker.

At present, in the free design process of speaker, receive the restriction in vibration space, the mode that uses centering branch piece threading generally reduces the whole height of product, and the direct wire welding on with centering branch piece or bullet ripples of voice coil line leads to the rosin joint easily in this mode, and the product defective rate is higher, acoustic performance is unstable.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a speaker, so as to solve the problems of the prior speaker that the welding of the voice coil wire is not firm, the product yield is low, and the development of the product toward a light and thin direction is not facilitated.

The invention provides a loudspeaker, which comprises a shell, an electric connector fixed on the shell and a vibration system contained in the shell; the vibration system comprises a centering support plate with an annular structure and a voice coil framework suspended in the shell through the centering support plate; the voice coil framework is symmetrically provided with voice coil framework bonding pads, and the centering support piece is provided with sputtering parts corresponding to the positions of the voice coil framework bonding pads; the sputtering piece is respectively communicated with the voice coil framework bonding pad and the electric connecting piece.

In addition, it is preferable that the sputtering member is a metal conductive member symmetrically sputtered on the centering branch piece.

In addition, it is preferable that a voice coil wire is wound around the voice coil bobbin, and the voice coil wire is electrically connected to the voice coil bobbin bonding pad.

In addition, the sputtering piece is preferably conducted with the voice coil framework bonding pad and the electric connecting piece through conductive adhesive respectively.

In addition, the vibration system preferably further comprises a folding ring fixed with the shell, and a composite basin and a dust cover positioned on the inner side of the folding ring; wherein, the outer edge of the composite basin is fixed with the folding ring, and the inner edge is fixed with the dust cover; the curved surface side of the edge is arranged close to the voice coil framework.

In addition, the electric connector is preferably fixed on the shell in an injection molding mode, an electric connector bonding pad is arranged on the electric connector, and the sputtering piece is conducted with the electric connector bonding pad.

In addition, the magnetic circuit system is preferably further provided, which is accommodated in the housing; the magnetic circuit system comprises a magnetic conducting yoke fixedly connected with the shell, a magnet accommodated in the center of the magnetic conducting yoke, and a washer fixed on one side of the magnet far away from the magnetic conducting yoke.

In addition, the magnetic yoke preferably comprises a bottom and a side wall which is perpendicular to the bottom, and a magnetic gap is formed between the magnet and the washer and the side wall; the voice coil framework is suspended in the magnetic gap.

In addition, preferably, a protrusion is arranged at the bottom of the magnetic yoke corresponding to the position fixed by the magnet; the axes of the bulge, the magnetic circuit system and the vibration system are positioned on the same straight line.

By utilizing the loudspeaker, the metal conductive piece is sputtered on the centering support piece, and the sputtering piece formed by sputtering realizes the conduction between the voice coil framework bonding pad and the electric connecting piece bonding pad, so that the loudspeaker is high in product reliability and stable in acoustic performance, and is beneficial to the development of the loudspeaker towards the ultrathin direction.

To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.

Drawings

Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 is an exploded view of a speaker according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a speaker according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a centering chip according to an embodiment of the invention.

Wherein the reference numerals include: the voice coil loudspeaker comprises a composite basin 1, a voice coil framework 2, a voice coil framework bonding pad 21, a centering support 3, a sputtering part 31, a shell 4, an electric connector 41, a washer 5, a magnet 6, a magnetic yoke 7, a folding ring 9 and a dust cover 10.

The same reference numbers in all figures indicate similar or corresponding features or functions.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

To describe the speaker structure of the present invention in detail, specific embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 and 2 show an exploded structure and a sectional structure of a speaker according to the present invention, respectively.

As shown in fig. 1 and 2 together, the speaker of the embodiment of the present invention includes a case 4 of a circular structure, an electrical connector 41 fixed to the case 4 for connecting external circuits inside and outside the speaker, and a vibration system housed inside the case 4; wherein, vibration system includes that the centering disk 3 of loop configuration, hang voice coil skeleton 2 of establishing in shell 4 through centering disk 3, and the symmetry is provided with voice coil skeleton pad 21 on voice coil skeleton 2, is provided with the sputtering piece 31 that corresponds with voice coil skeleton pad 21 position on centering disk 3, and the both ends of sputtering piece 31 respectively switch on with voice coil skeleton pad 21 and electric connector 41 to realize switching on of speaker inside and outside circuit.

Specifically, fig. 3 shows the structure of a centering chip according to an embodiment of the present invention.

As shown in fig. 1 to 3, the damper 3 according to the embodiment of the present invention is an annular structure, and includes a corrugated portion, an inner edge fixedly connected to the voice coil bobbin 2, and an outer edge fixedly connected to the housing 4; wherein, two sputtering pieces 31 are symmetrically distributed on the corrugated part, the sputtering pieces 31 are metal conductive pieces sputtered on the centering branch piece 3, and the conduction between the voice coil framework bonding pad 21 and the electric connecting piece 41 is realized through the sputtering pieces 31. The electric connecting piece 41 is fixed on the shell 4 in an injection molding mode, an electric connecting piece bonding pad is arranged on the electric connecting piece 41, and the sputtering piece 31 is conducted with the electric connecting piece bonding pad; the voice coil bobbin 2 has a tubular structure, and a voice coil wire is wound around the voice coil bobbin 2 and is electrically connected to a voice coil bobbin bonding pad 21 provided on the voice coil bobbin 2.

In one embodiment of the present invention, sputtering member 31 is electrically connected to voice coil bobbin pad 21 and electrical connection member 41 through conductive paste, respectively. The conductive adhesive can achieve the effects of electric conduction and adhesive simultaneously, is an adhesive with electric conductivity after being cured or dried, is simple in process and easy to operate, can replace the existing welding conduction mode, and effectively improves the production efficiency and reliability degree of products.

In another embodiment of the present invention, shown together with fig. 1 to 3, the vibration system further comprises a corrugated rim 9 fixedly connected to the housing 4, and a composite basin 1 and a dust cover 10 located inside the corrugated rim 9; the composite basin 1 is of a conical structure, the outer edge of the composite basin 1 is fixedly connected with the inner edge of the folded ring 9, and the inner edge of the composite basin 1 is fixedly connected with the dust cover 10; the curved surface side of the edge 9 is arranged near the voice coil framework 2, or the edge 9 is bent to the side near the centering branch piece 3.

Further, the speaker includes a magnetic circuit system housed in the housing 4; the magnetic circuit system comprises a magnetic yoke 7 which is fixedly connected with the shell 4 and is in a U-shaped structure, a magnet 6 accommodated in the center of the magnetic yoke 7, and a washer 5 fixed on one side of the magnet 6 far away from the magnetic yoke 7. The magnetic yoke 7 comprises a bottom and a side wall perpendicular to the bottom, a magnetic gap is formed between the magnet 6 and the washer 5 and the side wall, and the voice coil framework 2 is suspended in the magnetic gap under the action of the centering support piece 3. The voice coil framework 2 is vibrated up and down by Lorentz force by introducing a variable current signal to the voice coil wire, and simultaneously drives the composite basin 1, the folding ring 9 and the dust cover 10 to vibrate and sound.

In the loudspeaker, the bottom of the magnetic yoke 7 can be provided with a bulge corresponding to the position where the magnet 6 is fixed, the center positions of the magnet 6 and the washer 5 are provided with through holes, and the vibration space of the vibration system is increased through the bulge, so that the overall stability of a magnetic circuit system and the acoustic performance of the loudspeaker can be improved; wherein, the axes of the bulge, the magnetic circuit system and the vibration system are all positioned on the same straight line.

In addition, in order to further improve the acoustic performance of the loudspeaker, a short-circuit ring may also be provided in the magnetic circuit system. Specifically, an avoiding structure corresponding to the short circuit ring is arranged on the washer 5, the short circuit ring is fixed in the avoiding structure, and the influence of the induced current of the voice coil on the magnetic field in the loudspeaker is counteracted through the short circuit ring.

According to the loudspeaker provided by the embodiment of the invention, the bonding pad is arranged on the voice coil framework, the sputtered metal material (sputtering piece) is arranged on the centering support piece, and the conduction of the loudspeaker voice coil and an external circuit is realized through the conduction of the sputtering piece, the bonding pad of the voice coil framework and the bonding pad of the electric connecting piece.

A loudspeaker according to the invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the loudspeaker of the present invention described above without departing from the spirit of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.

Claims

1. A loudspeaker comprising a housing, an electrical connector secured to the housing and a vibration system housed within the housing; the vibration system comprises a centering disk with an annular structure and a voice coil framework suspended in the shell through the centering disk; it is characterized in that the preparation method is characterized in that,

voice coil framework bonding pads are symmetrically arranged on the voice coil framework, and sputtering parts corresponding to the voice coil framework bonding pads are arranged on the centering support piece;

the sputtering piece is respectively conducted with the voice coil framework bonding pad and the electric connecting piece.

2. The loudspeaker of claim 1,

the sputtering component is a metal conductive component which is symmetrically sputtered on the centering support piece.

3. The loudspeaker of claim 1,

and a voice coil wire is wound on the voice coil framework and is communicated with the bonding pad of the voice coil framework.

4. The loudspeaker of claim 1,

the sputtering piece is respectively conducted with the voice coil framework bonding pad and the electric connecting piece through conductive adhesive.

5. The loudspeaker of claim 1,

the vibration system also comprises a folding ring fixed with the shell, and a composite basin and a dust cover which are positioned on the inner side of the folding ring; wherein,

the outer edge of the composite basin is fixed with the folding ring, and the inner edge of the composite basin is fixed with the dust cover;

the curved surface side of the edge is close to the voice coil framework.

6. The loudspeaker of claim 1,

the electric connecting piece is fixed on the shell in an injection molding mode, an electric connecting piece bonding pad is arranged on the electric connecting piece, and the sputtering piece is conducted with the electric connecting piece bonding pad.

7. The loudspeaker of claim 1, further comprising a magnetic circuit system housed within the enclosure; wherein,

the magnetic circuit system comprises a magnetic yoke fixedly connected with the shell, a magnet accommodated in the center of the magnetic yoke, and a washer fixed on one side of the magnet, which is far away from the magnetic yoke.

8. The loudspeaker of claim 7,

the magnetic yoke comprises a bottom and a side wall which is perpendicular to the bottom, and a magnetic gap is formed between the magnet, the washer and the side wall;

the voice coil framework is suspended in the magnetic gap.

9. The loudspeaker of claim 8,

a protrusion is arranged at the bottom of the magnetic guide yoke corresponding to the position where the magnet is fixed;

the axes of the bulge, the magnetic circuit system and the vibration system are positioned on the same straight line.