WO2022067926A1

WO2022067926A1 - Loudspeaker and electronic terminal

Info

Publication number: WO2022067926A1
Application number: PCT/CN2020/124211
Authority: WO
Inventors: 宋威; 张帆; 陶伟伟; 金鑫
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: 2020-09-29
Filing date: 2020-10-28
Publication date: 2022-04-07
Also published as: CN213126469U

Abstract

The present application provides a loudspeaker and an electronic terminal. The loudspeaker comprises a basket having an accommodation space, a vibration system fixed onto the basket, a magnetic circuit system used for driving the vibration system, and a flexible circuit board electrically connected to the vibration system. The flexible circuit board comprises a body portion, a conduction portion connected to the body portion and located between a short side of a voice coil and the basket, a first pad and a second pad which are fixedly disposed on the conduction portion, an outgoing wire welded to the first pad and connected to one end of the voice coil facing the magnetic circuit system, and an incoming wire welded to the second pad and connected to one end of the voice coil away from the magnetic circuit system. The outgoing wire comprises a first welding portion used for welding to the first pad and a first connecting portion used for connecting the first welding portion to the voice coil. The incoming wire comprises a second welding portion used for welding to the second pad and a second connecting portion used for connecting the second welding portion to the voice coil. An included angle is formed between the first welding portion and the long side direction of the voice coil, and/or an included angle is formed between the second welding portion and the long side direction of the voice coil.

Description

Speakers and Electronic Terminals

technical field

The present application relates to the field of electro-acoustics, and in particular, to a speaker and an electronic terminal.

Background technique

In today's mobile Internet era, the number of intelligent mobile terminal devices is constantly increasing, and the requirements for mobile terminals are getting higher and higher, one of which is the requirement for high-quality sound quality functions.

technical problem

In the related art, the wires used to connect the voice coil and the flexible circuit board are usually soldered to the pads on the flexible circuit board in a manner parallel to the long side of the voice coil. The solderable section is short and can easily come off, causing damage to the speaker.

Therefore, it is necessary to provide a new type of speaker and electronic terminal to solve the above problems.

technical solutions

The purpose of the present application is to provide a loudspeaker and an electronic terminal, the outgoing wires and/or incoming wires of the loudspeaker are welded more firmly and are not easily disengaged.

The technical solution of the present application is as follows: a loudspeaker, comprising a basin frame having a receiving space, a vibration system fixed on the basin frame, a magnetic circuit system for driving the vibration system, and a power circuit system for electrically connecting with the vibration system connected flexible circuit boards;

The vibration system includes a voice coil accommodated in the accommodating space and spaced apart from the magnetic circuit system; the flexible circuit board includes a body part fixed on the basin frame, connected to the body part and located at the A conducting portion between the short side of the voice coil and the basin frame, a first pad fixed on the conducting portion, and a first pad fixed on the conducting portion and connected to the first pad spaced second pads, an outlet wire welded on the first pad and connected to the end of the voice coil facing the magnetic circuit system, and an outlet wire welded on the second pad and connected to the voice coil an incoming line connected to one end away from the magnetic circuit system;

The outgoing wire includes a first welding part for welding with the first pad and a first connecting part for connecting the first welding part and the voice coil, and the incoming wire includes a first welding part for connecting with the second a second welding part welded to the pad and a second connecting part connecting the second welding part and the voice coil;

The first welding portion is arranged at an angle with the long-side direction of the voice coil, and/or the second welding portion is arranged at an included angle with the long-side direction of the voice coil.

As an embodiment of the present application, the conducting portion is in the shape of a rectangular plate, and the long side direction of the conducting portion is parallel to the short side direction of the voice coil.

As an embodiment of the present application, the first pad is rectangular, and the longitudinal direction of the first pad is parallel to the longitudinal direction of the conducting portion; the second pad is rectangular, and the The longitudinal direction of the second pad is parallel to the longitudinal direction of the conduction portion.

As an embodiment of the present application, the basin frame includes an annular side wall that encloses and forms the receiving space, and the vibration system further includes an upper diaphragm fixed to an end of the basin frame away from the vibration system, and a fixed On the lower diaphragm at the end of the basin frame away from the upper diaphragm, the body portion is sandwiched between the basin frame and the lower diaphragm.

As an embodiment of the present application, the upper diaphragm includes an upper folded ring portion, a first fixing portion extending from the outer periphery of the upper folded ring portion and fixed on the basin frame, a first fixing portion extending from the upper folded ring portion and fixed on the basin frame A second fixing part extending from the inner periphery of the part, a bracket covering the second fixing part and abutting on the voice coil, and a ball top abutting on the bracket, the bracket is open There is a limiting groove for restricting the movement of the conducting portion, and the conducting portion is fixed in the limiting groove.

As an embodiment of the present application, the outer peripheral edge of the first fixing portion is bent and extended toward the voice coil to form a part parallel to the annular side wall and abutting on a part of the annular side wall away from the voice coil. Receptacle on the side.

As an embodiment of the present application, the bracket includes a bottom wall that is annular and covers the second fixing portion, and a bottom wall extending from the outer periphery of the bottom wall toward the direction of the voice coil for supporting the skeleton of the body part and the support ring extending from the inner periphery of the bottom wall toward the voice coil and abutting on the periphery of the voice coil; the spherical top cover is provided on the bottom wall , the frame and the annular sidewall are spaced apart and arranged in parallel, and the conducting portion is located between the frame and the voice coil.

As an embodiment of the present application, the lower diaphragm includes a lower folded ring portion located between the frame and the annular side wall, extending from the outer periphery of the lower folded ring portion and abutting on the The outer fixing portion on the body portion and the inner fixing portion extending from the inner peripheral edge of the lower folded ring portion and abutting on the body portion.

As an embodiment of the present application, the magnetic circuit system includes a magnetic yoke, a main magnetic steel fixed at the center of the magnetic yoke, fixed on the magnetic yoke and surrounding the main magnetic steel and connected with the main magnetic steel. The magnetic steel is spaced apart to form a secondary magnetic steel, a main pole core attached above the main magnetic steel, and a secondary pole core surrounding the main pole core and attached to the secondary magnetic steel. The ring is suspended in the magnetic gap, and the secondary pole core is fixed on the basin frame.

Another technical solution of the present application is as follows: an electronic terminal, comprising a terminal body and the speaker as described in any of the above embodiments, the speaker being arranged on the terminal body.

beneficial effect

The beneficial effect of the present application is that the conducting part is located between the short side of the voice coil and the basin frame, and the outgoing wire includes a first welding part for welding with the first pad and a connecting part for connecting the first welding part and the voice coil. The first connecting part, the incoming wire includes a second welding part for welding with the second pad and a second connecting part for connecting the second welding part and the voice coil; since the first welding part forms an angle with the long side direction of the voice coil and/or the second welding part is arranged at an angle with the long side direction of the voice coil, and further, the length of the part where the first welding part and the first pad are welded will be longer, and the second welding part and the second welding pad will have a longer length. The length of the welded part will be longer, so that the first welding part and/or the second welding part can be more stably fixed on the conducting part, and not easy to come off, thus ensuring the service life of the speaker in this embodiment.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a speaker according to an embodiment of the application;

Fig. 2 is the exploded schematic diagram of the loudspeaker in Fig. 1;

Fig. 3 is the sectional view along A-A of Fig. 1;

Fig. 4 is the partial structure schematic diagram in Fig. 1;

5 is a schematic diagram of an overall structure of an electronic terminal according to an embodiment of the application;

1. Loudspeaker; 2. Terminal body; 100, Basin frame; 101, Receiving space; 110, Ring side wall; 200, Vibration system; 210, Upper diaphragm; 211, Upper ring part; 212, First fixing part; 213, second fixing part; 214, receiving part; 215, bracket; 2141, limit groove; 216, bottom wall; 217, skeleton; 218, support ring; 219, ball top; 220, voice coil; 230, lower vibration Membrane; 231, lower ring part; 232, outer fixing part; 233, inner fixing part; 300, magnetic circuit system; 310, yoke; 320, main magnet; 330, auxiliary magnet; 340, main pole core; 350, secondary pole core; 360, magnetic gap; 400, flexible circuit board; 410, body part; 420, conduction part; 430, first pad; 440, second pad; 450, outlet; 451, first Welding part; 452, first connecting part; 460, incoming wire; 461, second welding part; 462, second connecting part.

Embodiments of the present invention

To further illustrate the various embodiments, the present application provides accompanying drawings. These drawings are part of the disclosure content of the present application, and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant description of the specification to explain the operation principles of the embodiments. With reference to these contents, one of ordinary skill in the art will understand other possible implementations and advantages of the present application. Components in the figures are not drawn to scale, and similar component symbols are often used to represent similar components.

The present application will be further described below with reference to the accompanying drawings and embodiments.

Referring to FIGS. 1 to 4 , an embodiment of the present application provides a loudspeaker 1 . The loudspeaker 1 in this embodiment includes a basin frame 100 having a receiving space 101 , a vibration system 200 fixed on the basin frame 100 for The magnetic circuit system 300 for driving the vibration system 200 and the flexible circuit board 400 for electrical connection with the vibration system 200 are provided.

Please refer to FIG. 2 and FIG. 3 , in one embodiment, the basin frame 100 includes an annular side wall 110 , which encloses the annular side wall 110 to form a receiving space 101 , and the vibration system 200 comprises a The upper diaphragm 210, the voice coil 220 for driving the upper diaphragm 210 to vibrate, and the lower diaphragm 230 fixed on the end of the basin frame 100 away from the upper diaphragm 210, the voice coil 220 is accommodated in the accommodation space 101 and is connected to the magnetic circuit system. 300 interval settings.

Referring to FIGS. 2 and 4 , in one embodiment, the flexible circuit board 400 includes a body portion 410 sandwiched between the basin frame 100 and the lower diaphragm 230 , the body portion 410 is connected to the short side of the voice coil 220 and the The conducting portion 420 between the pots 100 , the first pad 430 fixed on the conducting portion 420 , the second pad 440 being fixed on the conducting portion 420 and spaced from the first pad 430 , The outgoing wire 450 welded on the first pad 430 and connected to the end of the voice coil 220 facing the magnetic circuit system 300 and the incoming wire 460 welded on the second pad 440 and connected to the end of the voice coil 220 facing away from the magnetic circuit system 300 . Specifically, the conducting portion 420 is disposed between the voice coil 220 and the annular side wall 110 , thereby making the structure more reasonable and facilitating the connection between the outgoing wire 450 and the incoming wire 460 and the voice coil 220 .

Referring to FIG. 2 and FIG. 4 , in one embodiment, the outgoing wire 450 includes a first welding portion 451 for welding with the first pad 430 and a first connecting portion 452 connecting the first welding portion 451 and the voice coil 220 . The wire 460 includes a second welding portion 461 for welding with the second pad 440 and a second connecting portion 462 for connecting the second welding portion 461 and the voice coil 220; angle, and/or the second welding portion 461 is disposed at an included angle with the longitudinal direction of the voice coil 220, and further, the length of the portion where the first welding portion 451 and the first pad 430 are welded will be longer, and the second welding portion The length of the part where 461 is welded with the second pad 440 will be longer, so that the first welding part 451 and/or the second welding part 461 can be more stably fixed on the conducting part 420 and not easy to come off, ensuring the The service life of the speaker 1 in the embodiment.

In one embodiment, the conducting portion 420 is in the shape of a rectangular plate, and the long side direction of the conducting portion 420 is parallel to the short side direction of the voice coil 220 .

In one embodiment, the first pad 430 is rectangular, and the long side of the first pad 430 is parallel to the long side of the conducting portion 420 ; the second pad 440 is rectangular, and the long side of the second pad 440 The direction is parallel to the longitudinal direction of the conduction portion 420 . It should be noted that, the first pad 430 and the second pad 440 may also be shaped like a rectangle, and the specific shapes of the first pad 430 and the second pad 440 are not limited.

Referring to FIG. 2 , in one embodiment, the upper diaphragm 210 includes an upper folded ring portion 211 , a first fixing portion 212 extending from the outer periphery of the upper folded ring portion 211 and fixed on the basin frame 100 , and a self-upper folded ring A second fixing part 213 extending from the inner periphery of the part 211, a bracket 215 covering the second fixing part 213 and abutting on the voice coil 220, and a ball top 219 abutting on the bracket 215, the bracket 215 is opened There is a limiting slot 2141 for restricting the movement of the conducting portion 420 , and the conducting portion 420 is fixed in the limiting slot 2141 . Through the limiting groove 2141 , the fixing of the conducting portion 420 can be made more stable, so that the conducting portion 420 is not easily shaken, so that the outgoing wires 450 and the incoming wires 460 are not easily separated from the conducting portion 420 .

Referring to FIG. 2 , in one embodiment, the outer periphery of the first fixing portion 212 is bent and extended toward the voice coil 220 to be parallel to the annular side wall 110 and abut on the side of the annular side wall 110 away from the voice coil 220 The accommodating portion 214 of the upper diaphragm 210 is stably fixed on the annular side wall 110 through the accommodating portion 214 .

Referring to FIG. 2 and FIG. 3 , in one embodiment, the bracket 215 includes a bottom wall 216 that is annular and covers the second fixing portion 213 . The frame 217 for supporting the body portion 410 and the support ring 218 extending from the inner periphery of the bottom wall 216 toward the voice coil 220 and abutting on the periphery of the voice coil 220 are provided. The spherical top 219 is covered on the bottom wall 216, The frame 217 is spaced apart from and parallel to the annular side wall 110 , and the conducting portion 420 is located between the frame 217 and the voice coil 220 . The main body 410 and the lower diaphragm 230 can be stably fixed by the frame 217 supporting the main body 410 and the lower diaphragm 230 .

Referring to FIG. 2 , in one embodiment, the lower diaphragm 230 includes a lower folded ring portion 231 located between the frame 217 and the annular side wall 110 , extending from the outer periphery of the lower folded ring portion 231 and abutting against the body portion The outer fixing portion 232 on the 410 and the inner fixing portion 233 extending from the inner peripheral edge of the lower folded ring portion 231 and abutting on the body portion 410 are formed.

Preferably, there are two lower diaphragms 230 , which are located on both sides of the voice coil 220 in the longitudinal direction, respectively, and the two lower diaphragms 230 are symmetrically arranged with respect to the voice coil 220 .

Referring to FIGS. 2 and 3 , in one embodiment, the magnetic circuit system 300 includes a magnetic yoke 310 , a main magnetic steel 320 fixed at the center of the magnetic yoke 310 , a main magnetic steel 320 fixed on the magnetic yoke 310 and surrounding the main magnetic steel 320 and The secondary magnet 330 is spaced apart from the primary magnet 320 to form a magnetic gap 360 , the primary core 340 attached above the primary magnet 320 , and the secondary core 350 surrounding the primary core 340 and attached to the secondary magnet 330 , the voice coil 220 is suspended in the magnetic gap 360 , and the secondary pole core 350 is fixed on the basin frame 100 . Specifically, the main pole core 340 and the secondary pole core 350 are respectively located between the voice coil 220 and the lower diaphragm 230 .

Referring to FIG. 5 , another embodiment of the present application provides an electronic terminal. The electronic terminal includes a terminal body 2 and the speaker 1 in any of the above embodiments. The speaker 1 is arranged on the terminal body 2 . In the speaker 1 , the conducting part 420 is located between the short side of the voice coil 220 and the basin frame 100 , and the outgoing wire 450 includes a first welding part 451 for welding with the first pad 430 and connecting the first welding part 451 and the first connecting part 452 of the voice coil 220, the incoming wire 460 includes a second welding part 461 for welding with the second pad 440 and a second connecting part 462 connecting the second welding part 461 and the voice coil 220; The welding portion 451 is arranged at an included angle with the long side direction of the voice coil 220, and/or the second welding portion 461 is arranged at an included angle with the long side direction of the voice coil 220, and further, the first welding portion 451 and the first pad 430 are arranged at an included angle. The length of the welded part will be longer, and the length of the part welded between the second welding part 461 and the second pad 440 will be longer, so that the first welding part 451 and/or the second welding part 461 can be more stably fixed on the The conducting portion 420 is not easily removed, which ensures the service life of the speaker 1 in this embodiment.

The above are only the embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present application, but these belong to the present application. scope of protection.

Claims

A loudspeaker is characterized in that it comprises a basin frame with a receiving space, a vibration system fixed on the basin frame, a magnetic circuit system for driving the vibration system, and a flexible device for electrically connecting with the vibration system circuit board;

The vibration system includes a voice coil accommodated in the accommodating space and spaced apart from the magnetic circuit system; the flexible circuit board includes a body part fixed on the basin frame, connected to the body part and located at the A conducting portion between the short side of the voice coil and the basin frame, a first pad fixed on the conducting portion, and a first pad fixed on the conducting portion and connected to the first pad spaced second pads, an outlet wire welded on the first pad and connected to the end of the voice coil facing the magnetic circuit system, and an outlet wire welded on the second pad and connected to the voice coil an incoming line connected to one end away from the magnetic circuit system;

The outgoing wire includes a first welding part for welding with the first pad and a first connecting part for connecting the first welding part and the voice coil, and the incoming wire includes a first welding part for connecting with the second a second welding part welded to the pad and a second connecting part connecting the second welding part and the voice coil;

The first welding portion is arranged at an angle with the long-side direction of the voice coil, and/or the second welding portion is arranged at an included angle with the long-side direction of the voice coil.
The loudspeaker according to claim 1, wherein the conducting portion is in the shape of a rectangular plate, and the long side direction of the conducting portion is parallel to the short side direction of the voice coil.
The loudspeaker according to claim 2, wherein: the first pad is rectangular, the longitudinal direction of the first pad is parallel to the longitudinal direction of the conducting portion; the second pad In the shape of a rectangle, the longitudinal direction of the second pad is parallel to the longitudinal direction of the conducting portion.
The loudspeaker according to claim 1, wherein the basin frame includes an annular side wall that encloses and forms the receiving space, and the vibration system further comprises a The upper vibrating membrane and the lower vibrating membrane fixed on the end of the basin frame away from the upper vibrating membrane, the body portion is sandwiched between the basin frame and the lower vibrating membrane.
The loudspeaker according to claim 4, wherein the upper diaphragm comprises an upper folded ring portion, a first fixing portion extending from the outer periphery of the upper folded ring portion and fixed on the basin frame, a self- a second fixing part extending from the inner peripheral edge of the upper folded ring part, a bracket covered on the second fixing part and abutting on the voice coil, and a ball top abutting on the bracket, The bracket is provided with a limiting groove for restricting the movement of the conducting portion, and the conducting portion is fixed in the limiting groove.
The loudspeaker according to claim 5, wherein the outer periphery of the first fixing portion is bent and extended toward the voice coil to be parallel to the annular side wall and abut against the annular side wall away from the A receiving portion on one side of the voice coil.
The loudspeaker according to claim 5, wherein the bracket comprises a bottom wall which is annular and covers the second fixing portion, and extends from the outer periphery of the bottom wall toward the voice coil. The skeleton formed for supporting the body portion and the support ring extending from the inner periphery of the bottom wall toward the voice coil and abutting on the periphery of the voice coil are formed, and the spherical top cover is provided on the On the bottom wall, the frame and the annular side wall are spaced apart and parallel to each other, and the conducting portion is located between the frame and the voice coil.
The loudspeaker according to claim 7, wherein the lower diaphragm comprises a lower folded ring portion located between the frame and the annular side wall, extending from the outer periphery of the lower folded ring portion and formed An outer fixing portion abutting on the body portion and an inner fixing portion extending from the inner peripheral edge of the lower folded ring portion and abutting on the body portion.
The loudspeaker according to any one of claims 1-8, wherein the magnetic circuit system comprises a magnetic yoke, a main magnetic steel fixed in the center of the magnetic yoke, fixed on the magnetic yoke and A secondary magnet that surrounds the main magnet and is spaced apart from the main magnet to form a magnetic gap, a main pole core attached above the main magnet, and a main pole core that surrounds the main pole and is attached to the main pole The secondary pole core of the secondary magnetic steel, the voice coil is suspended in the magnetic gap, and the secondary pole core is fixed on the basin frame.
An electronic terminal, characterized in that it comprises a terminal body and the speaker according to any one of the preceding claims 1-9, wherein the speaker is arranged on the terminal body.