CN213938312U

CN213938312U - Sound production device

Info

Publication number: CN213938312U
Application number: CN202021309583.3U
Authority: CN
Inventors: 严绪东; 邵涛; 顾小江
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-08-10
Anticipated expiration: 2030-07-06
Also published as: WO2022006968A1

Abstract

The sound production device comprises a basin frame with an accommodating space, and a vibration system and a magnetic circuit system which are accommodated and fixed in the accommodating space, wherein the magnetic circuit system is provided with a magnetic gap; the vibration system also comprises a conductive terminal which is integrated with the auxiliary vibration film, one end of the conductive terminal is electrically connected with the voice coil, and the other end of the conductive terminal extends out of the basin frame and is electrically connected with an external circuit. The sound production device can simplify the assembly process and reduce the cost.

Description

Sound production device

Technical Field

The utility model relates to an electroacoustic conversion field especially relates to an apply to vocal device of electron audio amplifier product.

Background

The sound generating device is also called a loudspeaker or a loudspeaker, is applied to a sound box and is used for converting an audio signal into sound to be played. The sound production device comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system with a magnetic gap, wherein the magnetic circuit system is used for driving the vibration system to vibrate and produce sound. The vibration system comprises the voice coil, and in the assembly process of the sound production device in the prior art, the voice coil is required to be electrically connected with an external circuit through a separately arranged conductive structure, so that the operation is inconvenient.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a sounding device, which can simplify the assembly process and reduce the cost.

The purpose of the utility model is realized by adopting the following technical scheme:

the sound production device comprises a basin frame with an accommodating space, and a vibration system and a magnetic circuit system which are accommodated and fixed in the accommodating space, wherein the magnetic circuit system is provided with a magnetic gap, the basin frame comprises a bottom wall and an annular side wall bent and extended from the edge of the bottom wall, the vibration system comprises a vibrating diaphragm fixed on one side, far away from the bottom wall, of the annular side wall, a voice coil suspended in the magnetic gap and driving the vibrating diaphragm to vibrate and produce sound, a framework connected between the voice coil and the vibrating diaphragm and supporting the voice coil, and an auxiliary vibrating diaphragm, two opposite sides of the auxiliary vibrating diaphragm are respectively fixed with the framework and the annular side wall, the magnetic circuit system comprises a magnet part fixed on the bottom wall and a magnetic bowl covered on one side, close to the vibrating diaphragm, of the magnet part, and the vibrating diaphragm is wound on the periphery of the magnetic bowl and connected with the magnetic bowl; the vibration system further comprises a conductive terminal which is integrally formed with the auxiliary vibrating diaphragm, one end of the conductive terminal is electrically connected with the voice coil, and the other end of the conductive terminal extends to the outside of the basin frame and is electrically connected with an external circuit.

Specifically, the bottom wall is provided with a bottom hole, the basin stand further comprises a cover plate which covers the bottom wall and covers the bottom hole, and the magnet part is clamped between the cover plate and the magnetic bowl.

Specifically, the skeleton include with the fixed main part of vibrating diaphragm and certainly the main part court the voice coil loudspeaker voice coil buckles the connecting arm body that extends, the magnetism bowl include with the cover plate just right roof and certainly roof edge court the curb plate that the diapire direction was buckled and is extended, the curb plate with magnet portion interval sets up and forms the magnetic gap, the voice coil loudspeaker voice coil suspension in the magnetic gap, the curb plate correspondence has been seted up and has dodged the mouth of dodging of linking arm, the connecting arm body warp dodge the mouth extend to the magnetic gap and with the voice coil loudspeaker voice coil rigid coupling.

Specifically, the skeleton is still including being fixed in the voice coil loudspeaker voice coil is kept away from the preforming of magnetism bowl one side, the preforming includes outer loop and the inner ring that mutual interval set up and is connected the outer loop with a plurality of bars of inner ring, the bar with the connecting arm body is just right, the inner ring with the voice coil loudspeaker voice coil is fixed, the outer loop with the main part is kept away from one side of vibrating diaphragm is just right and fixed, the connecting arm body court magnetic circuit direction of magnetic circuit extends and is formed with the connection piece, the voice coil loudspeaker voice coil presss from both sides and establishes and is fixed in the connection piece with between the inner ring.

Specifically, the vibrating diaphragm includes outer vibrating diaphragm and the interior vibrating diaphragm that mutual interval set up, outer vibrating diaphragm with interior vibrating diaphragm all is cyclic annular duplex winding and locates the roof periphery, interior vibrating diaphragm is located the magnetism bowl with between the outer vibrating diaphragm, the main part is connected interior vibrating diaphragm with between the outer vibrating diaphragm, roof edge court interior vibrating diaphragm direction extends and is formed with the supporting legs, interior vibrating diaphragm is kept away from one side of main part with the supporting legs is fixed.

Specifically, the supporting legs with the connecting arm body just to and the interval sets up, the supporting legs is located the interior vibrating diaphragm is close to one side of magnetic circuit, the sound production device is still including covering and locating the gasket of interior vibrating diaphragm, the interior vibrating diaphragm is close to one side clamp of roof is located the gasket with between the supporting legs.

Specifically, the magnet part includes along the vibration direction of vibrating diaphragm folds two at least magnet steels of establishing and presss from both sides and locates adjacent two utmost point core between the magnet steel.

Specifically, the voice coil extends towards the direction away from the vibrating diaphragm to form a voice coil lead, one end, away from the magnetic circuit system, of the voice coil lead is electrically connected with the conductive terminal, and the voice coil lead is clamped between the connecting arm body and the strip-shaped body.

Specifically, the connection arm body is provided with an avoiding groove, a bonding pad is arranged in the avoiding groove, and the conductive terminal and the voice coil lead respectively extend into the avoiding groove and are welded and fixed with the bonding pad.

Specifically, the conductive terminal and the auxiliary diaphragm are formed into a whole through hot press molding.

Specifically, the conductive terminal is a braided conductive wire.

Specifically, the annular side wall is provided with a through hole in a penetrating mode, and one end, far away from the voice coil, of the conductive terminal extends out of the basin frame through the through hole.

Compared with the prior art, the beneficial effects of the utility model reside in that:

because conductive terminal and supplementary vibrating diaphragm be integrated into one piece, in the in-process of equipment sound production device, only need direct mount supplementary vibrating diaphragm, then with voice coil loudspeaker voice coil and conductive terminal lug connection, can realize the electricity of conductive terminal and voice coil loudspeaker voice coil and be connected, need not to set up electrically conductive spare alone to simplify the assembly process, reduce cost.

Drawings

Fig. 1 is a schematic perspective view of a sound generating device according to an embodiment of the present invention;

FIG. 2 is an exploded view of the sound device of FIG. 1;

FIG. 3 is an enlarged cross-sectional view of the sound device of FIG. 1 taken along line A-A;

FIG. 4 is a partially assembled schematic view of the sound device of FIG. 1;

FIG. 5 is an enlarged cross-sectional view of the sound device of FIG. 4 taken along line B-B;

fig. 6 is a schematic perspective view of a skeleton of a sound production device according to an embodiment of the present invention;

FIG. 7 is a partially assembled schematic view of the sound device of FIG. 1;

fig. 8 is an enlarged partial view of the sound device of fig. 7 at C.

In the figure: 1. a basin stand; 11. a bottom wall; 111. a bottom hole; 12. an annular sidewall; 121. a through hole; 13. A cover sheet;

2. a vibration system; 21. vibrating diaphragm; 211. an outer diaphragm; 212. an inner diaphragm; 22. a voice coil; 221. a voice coil lead; 23. a framework; 231. a main body portion; 232. a connecting arm body; 2321. connecting sheets; 233. tabletting; 2331. an outer ring; 2332. an inner ring; 2333. a strip-shaped body; 234. a pad; 24. an auxiliary diaphragm; 241. a conductive terminal;

3. a magnetic circuit system; 31. a magnetic gap; 32. a magnet portion; 321. magnetic steel; 322. a pole piece; 33. a magnetic bowl; 331. a top plate; 3311. supporting legs; 332. a side plate; 3321. avoiding the mouth; 34. and (7) a gasket.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1 to 6, the sounder comprises a basin stand 1 having a receiving space, and a vibration system 2 and a magnetic circuit system 3 received and fixed in the receiving space, wherein the magnetic circuit system 3 has a magnetic gap 31 (see fig. 5). The frame 1 comprises a bottom wall 11 and an annular side wall 12 extending from the edge of the bottom wall 11 in a bending way. The bottom wall 11 is provided with a bottom hole 111, and the basin stand 1 further comprises a cover plate 13 which is covered on the bottom wall 11 and covers the bottom hole 111.

Referring to fig. 1 to 6, the vibration system 2 includes a diaphragm 21 fixed to a side of the annular side wall 12 away from the bottom wall 11, a voice coil 22 suspended in the magnetic gap 31 and driving the diaphragm 21 to vibrate and generate sound, a bobbin 23 connected between the voice coil 22 and the diaphragm 21 and supporting the voice coil 22, and an auxiliary diaphragm 24. The bobbin 23 includes a main body 231 fixed to the diaphragm 21 and a connection arm 232 extending from the main body 231 toward the voice coil 22. The bobbin 23 further includes a pressing piece 233 fixed to a side of the voice coil 22 remote from the magnetic bowl 33. The pressing plate 233 comprises an outer ring 2331 and an inner ring 2332 which are arranged at intervals, and a plurality of strips 2333 for connecting the outer ring 2331 and the inner ring 2332, wherein the strips 2333 are opposite to the connecting arm 232, the inner ring 2332 is fixed with the voice coil 22, and the outer ring 2331 is opposite to and fixed with one side of the main body 231 far away from the diaphragm 21. Connection piece 2321 is formed to extend toward the magnetic path of the magnetic path system in connection arm 232, and voice coil 22 is sandwiched and fixed between connection piece 2321 and inner ring 2332.

Opposite sides of the auxiliary diaphragm 24 are fixed to the frame 23 and the annular sidewall 12, respectively, and the magnetic circuit system 3 includes a magnet portion 32 fixed to the bottom wall 11 and a magnetic bowl 33 covering the magnet portion 32 on a side close to the diaphragm 21. The magnet portion 32 includes at least two magnetic steels 321 stacked along the vibration direction of the diaphragm 21 and a pole core 322 sandwiched between two adjacent magnetic steels 321. The magnet part 32 is sandwiched between the cover 13 and the magnetic bowl 33. The magnetic bowl 33 includes a top plate 331 facing the cover plate 13 and a side plate 332 extending from the edge of the top plate 331 toward the bottom wall 11, the side plate 332 and the magnet portion 32 are disposed at an interval to form a magnetic gap 31, and the voice coil 22 is suspended in the magnetic gap 31. The side plate 332 is correspondingly provided with an avoiding opening 3321 avoiding the connecting arm, and the connecting arm 232 extends to the magnetic gap 31 through the avoiding opening 3321 and is fixedly connected with the voice coil 22.

The vibrating diaphragm 21 is wound around the periphery of the magnetic bowl 33 and connected with the magnetic bowl 33. The vibrating diaphragm 21 includes an outer vibrating diaphragm 211 and an inner vibrating diaphragm 212 that are disposed at an interval, the outer vibrating diaphragm 211 and the inner vibrating diaphragm 212 are both annular and surround the periphery of the top plate 331, and the inner vibrating diaphragm 212 is located between the top plate 331 and the outer vibrating diaphragm 211. The main body 231 is connected between the inner diaphragm 212 and the outer diaphragm 211, the top plate 331 has a supporting leg 3311 extending toward the inner diaphragm 212, and the side of the inner diaphragm 212 away from the main body 231 is fixed to the supporting leg 3311. The supporting legs 3311 are opposite to the connecting arm 232 and are spaced apart from each other, and the supporting legs 3311 are located on one side of the inner diaphragm 212 close to the magnetic circuit system 3. The sounding device further includes a spacer 34 covering the inner diaphragm 212, and one side of the inner diaphragm 212 close to the top plate 331 is sandwiched between the spacer 34 and the supporting legs 3311.

The vibration system 2 further includes a conductive terminal 241 integrally formed with the auxiliary diaphragm 24, and the conductive terminal 241 is integrally formed with the auxiliary diaphragm 24 by hot press molding. The conductive terminals 241 are braided conductive wires. One end of the conductive terminal 241 is electrically connected to the voice coil 22, and the other end extends to the outside of the frame 1 and is electrically connected to an external circuit. The annular sidewall 12 has a through hole 121, and one end of the conductive terminal 241 away from the voice coil 22 extends out of the basin frame 1 through the through hole 121. A voice coil lead 221 extends from the voice coil 22 in a direction away from the diaphragm 21, one end of the voice coil lead 221 away from the magnetic circuit system 3 is electrically connected to the conductive terminal 241, and the voice coil lead 221 is sandwiched between the connecting arm 232 and the strip 2333. Referring to fig. 6 to 8, the connecting arm 232 is provided with an avoiding groove, a pad 234 is disposed in the avoiding groove, and the conductive terminal 241 and the voice coil lead 221 extend into the avoiding groove and are welded and fixed to the pad 234.

Since the conductive terminal 241 and the auxiliary diaphragm 24 are integrally formed, in the process of assembling the sound generating device, the conductive terminal 241 and the voice coil 22 can be electrically connected by only directly installing the auxiliary diaphragm 24 and then directly connecting the tail end of the voice coil 22 with the inner end of the conductive terminal 241. The terminal of the voice coil 22 does not need to be provided with a terminal, so that a process of connecting the conductive terminal 241 to the terminal is eliminated, thereby simplifying an assembly process and reducing cost.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. Sounder, including the basin frame that has accommodating space and accommodate and be fixed in vibration system and magnetic circuit in the accommodating space, magnetic circuit has magnetic gap, its characterized in that: the vibration system comprises a vibrating diaphragm fixed on one side of the annular side wall, a voice coil suspended in the magnetic gap and driving the vibrating diaphragm to vibrate and produce sound, a framework connected between the voice coil and the vibrating diaphragm and supporting the voice coil, and an auxiliary vibrating diaphragm, wherein two opposite sides of the auxiliary vibrating diaphragm are respectively fixed with the framework and the annular side wall, the magnetic circuit system comprises a magnet part fixed on the bottom wall and a magnetic bowl covered on one side of the magnet part close to the vibrating diaphragm, and the vibrating diaphragm is wound on the periphery of the magnetic bowl and connected with the magnetic bowl; the vibration system further comprises a conductive terminal which is integrally formed with the auxiliary vibrating diaphragm, one end of the conductive terminal is electrically connected with the voice coil, and the other end of the conductive terminal extends to the outside of the basin frame and is electrically connected with an external circuit.

2. The sound production device of claim 1, wherein: the bottom wall is provided with a bottom hole, the basin stand further comprises a cover plate which is covered on the bottom wall and covers the bottom hole, and the magnet part is clamped between the cover plate and the magnetic bowl.

3. The sound production device of claim 2, wherein: the skeleton include with the fixed main part of vibrating diaphragm and certainly the main part court the connection arm body that the voice coil loudspeaker voice coil buckled and extends, the magnetism bowl include with the cover plate just right roof and certainly the roof edge court the curb plate that the diapire direction was buckled and is extended, the curb plate with magnet portion interval sets up and forms the magnetic gap, the voice coil loudspeaker voice coil suspension in the magnetic gap, the curb plate correspondence has been seted up and has been dodged the mouth of dodging of linking arm, the connection arm body warp dodge the mouth extend to the magnetic gap and with the voice coil loudspeaker voice coil rigid coupling.

4. The sound production device of claim 3, wherein: the framework further comprises a pressing sheet fixed on one side of the magnetic bowl away from the voice coil, the pressing sheet comprises an outer ring, an inner ring and a plurality of strip-shaped bodies, the outer ring and the inner ring are arranged at intervals, the outer ring is connected with the plurality of strip-shaped bodies of the inner ring, the strip-shaped bodies are right opposite to the connecting arm bodies, the inner ring is fixed with the voice coil, the outer ring is far away from the main body part, one side of the vibrating diaphragm is right opposite to and fixed with the main body part, the connecting arm bodies face the magnetic circuit direction of the magnetic circuit system extends to form a connecting sheet, and the voice coil is clamped and fixed between the connecting sheet and the inner ring.

5. The sound production device of claim 3, wherein: the vibrating diaphragm includes outer vibrating diaphragm and interior vibrating diaphragm that the mutual interval set up, outer vibrating diaphragm with interior vibrating diaphragm all is cyclic annular duplex winding and locates the roof periphery, interior vibrating diaphragm is located the roof with between the outer vibrating diaphragm, the main part is connected interior vibrating diaphragm with between the outer vibrating diaphragm, roof edge court interior vibrating diaphragm direction extends and is formed with the supporting legs, interior vibrating diaphragm is kept away from one side of main part with the supporting legs is fixed.

6. The sound production device of claim 5, wherein: the supporting legs and the connecting arm body are arranged just opposite to each other at intervals, the supporting legs are located on one side, close to the magnetic circuit system, of the inner vibrating diaphragm, the sounding device further comprises a gasket covering the inner vibrating diaphragm, and one side, close to the top plate, of the inner vibrating diaphragm is clamped between the gasket and the supporting legs.

7. The sound production device of claim 4, wherein: the magnet part comprises at least two magnetic steels stacked along the vibration direction of the vibrating diaphragm and a pole core clamped between the two adjacent magnetic steels.

8. The sound production device of claim 4, wherein: the voice coil is towards keeping away from the vibrating diaphragm direction extends and is provided with a voice coil lead, one end of the voice coil lead, which is far away from the magnetic circuit system, is electrically connected with the conductive terminal, and the voice coil lead is clamped between the connecting arm body and the strip-shaped body.

9. The sound production device of claim 8, wherein: the voice coil is characterized in that an avoiding groove is formed in the connecting arm body, a bonding pad is arranged in the avoiding groove, and the conductive terminal and the voice coil lead respectively extend into the avoiding groove and are welded and fixed with the bonding pad.

10. The sound production device of claim 1, wherein: the conductive terminal and the auxiliary vibrating diaphragm are formed into a whole through hot-press molding.

11. The sound production device of claim 1, wherein: the conductive terminals are woven conductive wires.

12. The sound production device of claim 1, wherein: the annular side wall penetrates through the through hole, and one end, far away from the voice coil, of the conductive terminal extends out of the basin frame through the through hole.