WO2021134421A1

WO2021134421A1 - Voice coil and loudspeaker

Info

Publication number: WO2021134421A1
Application number: PCT/CN2019/130374
Authority: WO
Inventors: 蔡雪雷; 赵彬; 陈敏敏
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-08

Abstract

The present application provides a voice coil and a loudspeaker. A voice coil input end is provided on the inner side surface of a multi-coil structure of the voice coil, and a voice coil output end is provided on the outer side surface of the multi-coil structure corresponding to the voice coil input end, so as to form the voice coil of which the voice coil input end and the voice coil output end are separately located at the side parts of the multi-coil structure, and thus, compared with a traditional voice coil of which the voice coil input end is located at the top of the voice coil, the pure tone quality of the voice coil during use can be obviously improved. An upper voice diaphragm, a lower voice diaphragm, a pole core, a basket, a PCB board, and magnetic steel are arranged, the lower voice diaphragm abuts against one end of the PCB board, the other end of the PCB board is connected to the voice coil, one end, distant from the PCB board, of the voice coil abuts against the upper voice diaphragm, the pole core is located at the middle part of the voice coil and abuts against the magnetic steel, and the magnetic steel is connected to the basket, and thus, the problem that the voice coil input end collides with a magnetic bowl in the vibration process of the voice coil is solved, and the pure tone quality of the loudspeaker is improved.

Description

Voice coil and speaker

Technical field

This application relates to the technical field of acoustic design, in particular to a voice coil and a loudspeaker.

Background technique

In the prior art loudspeaker, the incoming line of the voice coil traverses the end face of the voice coil, so that the height of the incoming line of the voice coil is significantly higher than the height of other parts of the voice coil. On the one hand, the voice coil and the sound film are flat after being connected. On the other hand, the protruding incoming wire collides with the upper surface of the magnetic bowl during the vibration of the voice coil, which seriously affects the pure sound quality of the speaker.

technical problem

Therefore, it is necessary to provide a voice coil and speaker with a new structure to solve the above-mentioned problems.

Technical solutions

The purpose of this application is to provide a voice coil and a speaker in which the voice coil inlet and the voice coil outlet are located on the side of the voice coil, so as to improve the pure sound quality of the speaker.

One aspect of the present application provides a voice coil, including a voice coil winding, a voice coil input end, and a voice coil output end. The voice coil winding is arranged to form a multi-turn structure, and the voice coil input end is located in the multi-turn structure. On the inner side of the coil structure, the voice coil output end is located on the outer side of the multi-turn structure.

Optionally, the voice coil input end and the voice coil output end are located between the top surface and the bottom surface of the multi-turn structure.

Optionally, the voice coil input end and the voice coil output end are close to the bottom surface of the voice coil.

Optionally, the voice coil input end and the voice coil output end are arranged symmetrically.

Another aspect of the present application provides a voice coil, including a voice coil winding, a voice coil input end and a voice coil output end, the voice coil winding is arranged to form a multi-turn structure, and the voice coil input end is located at the The outer side of the multi-turn structure, and the voice coil output end is located on the inner side of the multi-turn structure.

In yet another aspect of the present application, a loudspeaker is provided, which includes the voice coil described in any one of the above, and further includes an upper sound film and a lower sound film, a pole core, a basin frame, a PCB board, and a magnetic steel. The upper sound film is installed On the frame, the lower sound film abuts against one end of the PCB board, the other end of the PCB board is connected to the voice coil, and the end of the voice coil away from the PCB board is connected to the The upper sound film abuts, the pole core is located in the middle of the voice coil and resists the magnetic steel, and the magnetic steel is connected to the basin frame.

Optionally, the PCB board is provided with connection electrodes corresponding to the voice coil input terminal and the voice coil output terminal, and the voice coil input terminal and the voice coil output terminal are respectively connected to the connection electrode .

Optionally, an escape position is provided on the pole core and the magnetic steel, and the escape position corresponds to the shape of the connecting electrode, the voice coil input end, and the voice coil output end.

Optionally, the lower sound membrane has a concave structure, and the lower sound membrane is arranged at both ends of the bottom surface of the voice coil.

Optionally, the magnet includes a main magnet and a side magnet, the main magnet is located at the lower part of the pole core, and the side magnet is located on both sides of the main magnet.

Optionally, the loudspeaker further includes a splint, and the splint resists the magnetic steel and is connected to the basin frame.

Beneficial effect

The beneficial effect of the present application is that by arranging the input end of the voice coil on the inner side of the voice coil multi-turn structure, and setting the voice coil output end on the outer side of the multi-turn structure corresponding to the voice coil input end, a kind of voice is formed. The coil input and the voice coil output are respectively located on the side of the multi-turn structure. Compared with the traditional voice coil with the voice coil input on the top of the voice coil, it can significantly improve the pure tone quality during the use of the voice coil; The upper sound film, the lower sound film, the pole core, the frame, the PCB board and the magnetic steel, the lower sound film is in contact with the PCB board, the other end of the PCB board is connected to the voice coil, and the end of the voice coil away from the PCB board is connected to the upper sound film Abutting, the pole core is located in the middle of the voice coil to resist the magnetic steel, and the magnetic steel is connected to the frame to form a speaker with a voice coil with a sound film input end and a sound film output end located on the side of the voice coil, thereby eliminating the voice coil The problem of collision between the voice coil input end and the magnetic bowl during the vibration process improves the pure sound quality of the speaker.

Description of the drawings

FIG. 1 is a schematic diagram of an implementation manner of the voice coil of this application;

Fig. 2 is a schematic diagram of the voice coil in Fig. 1 from another perspective;

FIG. 3 is a schematic diagram of another implementation manner of the voice coil of this application;

FIG. 4 is a schematic diagram of an implementation manner of a speaker of this application;

Figure 5 is an exploded view of the speaker in Figure 4.

Embodiments of the present invention

The application will be further described below in conjunction with the drawings and implementations.

1 and 2, the voice coil 100 includes a voice coil winding 110, a voice coil input terminal 120, and a voice coil output terminal 130. The voice coil winding is arranged to form a multi-turn structure 140, and the voice coil input terminal 120 is located in the multi-turn structure On the inner side of 140, the voice coil output terminal 130 is located on the outer side of the multi-turn structure 140 corresponding to the voice coil input terminal 120, forming a type of voice coil input terminal 120 and voice coil output terminal 130 respectively located on the side of the multi-turn structure The voice coil, compared with the traditional voice coil with the input end of the voice coil at the bottom of the voice coil, the embodiment of the present application eliminates the collision between the voice coil input end and the porcelain cone during the vibration process of the voice coil, which affects the pure sound quality of the speaker The problem.

3, the voice coil 100 includes a voice coil winding 110, a voice coil input terminal 120, and a voice coil output terminal 130. The voice coil winding is arranged to form a multi-turn structure 140, and the voice coil input terminal 120 is located outside the multi-turn structure 140. On the side, the voice coil output terminal 130 is located on the inner side surface corresponding to the multi-turn structure 140 corresponding to the voice coil input terminal 120.

In one embodiment, the voice coil input terminal 120 and the voice coil output terminal 130 are located between the top surface 141 and the bottom surface 142 of the multi-turn structure 140, which saves the height of the voice coil and facilitates the voice coil input terminal 120 and the voice coil output terminal. 130 connection operation with other components.

In one embodiment, the voice coil input terminal 120 and the voice coil output terminal 130 are close to the bottom surface of the voice coil 100, so that the voice coil input terminal 120 and the voice coil output terminal 130 are electrically connected to the PCB board located at the bottom of the voice coil 100, while saving Voice coil space. Due to the proximity to the bottom of the voice coil, the connection distance between the voice coil input terminal 120 and the voice coil output terminal 130 and the PCB board is shorter, which makes the connection operation more convenient, the connection difficulty is lower, and the reliability of the connection structure is higher.

In one embodiment, the voice coil input terminal 120 and the voice coil output terminal 130 are symmetrically arranged, making the connection structure of the voice coil more intuitive, and the voice coil winding distribution on the voice coil is more even, so that the voice coil vibration is more uniform, and thus To a certain extent, it helps to ensure the stability and reliability of the voice coil 100.

4 and 5, the speaker includes any one of the voice coils 100 described above, and also includes an upper sound film 210 and a lower sound film 220, a pole core 300, a basin 400, a PCB board 500 and a magnet 600. The upper sound film 210 is installed on the frame 400, the lower sound film 220 is in contact with one end of the PCB board 500, the other end of the PCB board 500 is connected to the voice coil 100, and the end of the voice coil 100 away from the PCB board is in contact with the upper sound film 210. Then, the pole core 300 is located in the middle of the voice coil 100 and resists the magnet 600, and the magnet 600 is connected to the frame 400. The pole core 300 and the magnetic steel 600 constitute a magnetic circuit system. The upper sound film 210, the lower sound film 220, the voice coil 100, and the PCB board 500 constitute a vibration system. Under the interaction of the magnetic circuit system and the vibration system, a sound system is formed. The coil input terminal 120 and the voice coil output terminal 130 are located in the speakers on the side of the voice coil 100, thereby eliminating the problem of the voice coil input terminal 120 colliding with the magnetic bowl, thereby improving the pure sound quality of the speaker.

In one embodiment, the PCB board 500 is provided with connection electrodes 510 corresponding to the voice coil input terminal 120 and the voice coil output terminal 130. The voice coil input terminal 120 and the voice coil output terminal 130 are electrically connected to the connection electrode 510, respectively. 500 is used to connect current to the voice coil 100. Under the joint action of the PCB board 500, the pole core 300, and the magnetic steel 600, the voice coil 100 is driven to move in the vertical space, thereby driving the upper sound diaphragm 210 and the lower sound diaphragm 220 to vibrate and produce sound.

In one embodiment, the pole core 300 and the magnetic steel 600 are provided with avoidance positions (310, 630), and the avoidance positions (310, 630) correspond to the shapes of the connecting electrode 510, the voice coil input terminal 120, and the voice coil output terminal 130, so that the connection The electrode 510, the voice coil input terminal 120, and the voice coil output terminal 130 can pass through the pole core 300 and the magnet 600 to ensure the reliability of the connection between the electrode 510, the voice coil input terminal 120, and the voice coil output terminal 130.

In one embodiment, the lower sound membrane 220 is a concave structure, and the lower sound membrane 220 is arranged at both ends of the bottom surface of the voice coil 100 and connected with the basin frame 400 to form a double sound membrane structure of the upper sound membrane 210 and the lower sound membrane 220 , It is beneficial to improve the overall performance of the speaker. At the same time, the lower sound film 220 and the PCB board 500 are both held against the bottom of the basin frame 400. Part of the structure of the PCB board 500 is located in the arched space of the lower sound film 220, so that the lower sound film 220, The connection structure between the PCB board 500 and the basin 400 is compact and reasonable, which improves the utilization rate of the internal space of the speaker to a certain extent.

In one embodiment, the magnet 600 includes a main magnet 610 and a side magnet 620, the main magnet 610 is located at the lower part of the pole core 300, and the side magnet 620 is located on both sides of the main magnet 610, providing a stable and reliable speaker The magnetic field guarantees the sound quality of the speaker.

In one embodiment, the loudspeaker further includes a splint 700. The splint 700 resists the magnetic steel 600 and is connected to the basin frame. The magnetic steel 600, the pole core 300, the lower sound film 220 and the PCB board 500 are reliably connected to the basin frame. 400, to ensure the reliability of the overall structure of the speaker.

The above are only the implementation manners of this application. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of this application, but these all belong to this application. The scope of protection.

Claims

A voice coil, characterized by comprising a voice coil winding, a voice coil input end and a voice coil output end, the voice coil winding is arranged to form a multi-turn structure, and the voice coil input end is located in the multi-turn structure The voice coil output end is located on the outer side of the multi-turn structure.
The voice coil according to claim 1, wherein the voice coil input end and the voice coil output end are located between the top surface and the bottom surface of the multi-coil structure.
The voice coil according to claim 2, wherein the voice coil input end and the voice coil output end are close to the bottom surface of the voice coil.
The voice coil according to claim 1, wherein the voice coil input end and the voice coil output end are arranged symmetrically.
A voice coil, characterized by comprising a voice coil winding, a voice coil input end and a voice coil output end, the voice coil winding is arranged to form a multi-turn structure, and the voice coil input end is located in the multi-turn structure The voice coil output end is located on the inner side of the multi-turn structure.
A loudspeaker, characterized in that it comprises the voice coil according to any one of claims 1 to 4, and further comprises an upper sound film and a lower sound film, a pole core, a frame, a PCB board and a magnetic steel, and the upper sound film Installed on the basin frame, the lower sound film abuts on one end of the PCB board, the other end of the PCB board is connected to the voice coil, and the end of the voice coil away from the PCB board is connected to the In the above sound film abutting, the pole core is located in the middle of the voice coil and resists the magnetic steel, and the magnetic steel is connected to the basin frame.
The speaker according to claim 6, wherein the PCB board is provided with connection electrodes corresponding to the voice coil input terminal and the voice coil output terminal, and the voice coil input terminal and the voice coil The output ends are respectively connected with the connecting electrodes.
The loudspeaker according to claim 7, wherein the pole core and the magnetic steel are provided with an escape position, and the escape position is connected to the connecting electrode, the voice coil input end, and the voice coil output. The shape of the end corresponds.
The loudspeaker according to claim 6, wherein the lower sound film is a concave structure, and the lower sound film is arranged at both ends of the bottom surface of the voice coil.
The speaker according to claim 6, wherein the magnetic steel includes a main magnetic steel and a side magnetic steel, the main magnetic steel is located at the lower part of the pole core, and the side magnetic steel is located on the main magnetic steel. On both sides.
The loudspeaker according to any one of claims 6 to 10, further comprising a splint, the splint resists the magnetic steel and is connected to the basin frame.