CN213462267U

CN213462267U - Sound production device

Info

Publication number: CN213462267U
Application number: CN202022219125.7U
Authority: CN
Inventors: 宋威; 令狐荣林; 肖波; 孔晨亮; 章统
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-15
Anticipated expiration: 2030-09-30
Also published as: WO2022067986A1

Abstract

The utility model provides a sounding device, which comprises a vibration system for vibration sounding and a magnetic circuit system for driving the vibration system to vibrate and sound and having a magnetic gap, wherein the vibration system comprises a vibrating diaphragm, a voice coil inserted in the magnetic gap and driving the vibrating diaphragm to vibrate and sound and a framework connecting the voice coil and the vibrating diaphragm, and the framework comprises a framework body and a framework connecting arm bent and extended by the framework body; the framework connecting arm comprises a protruding portion formed by protruding the end, far away from the vibrating diaphragm, of the framework body, a first extending portion and a second extending portion, wherein the protruding portion is formed by protruding the end, far away from the vibrating diaphragm, of the framework body, the first extending portion is bent and extended along the outer side, near the vibrating diaphragm, of the end, far away from the vibrating diaphragm, of the protruding portion, the second extending portion is bent and extended along the end, far away from the protruding portion of the first extending portion, of the end, the second extending portion is abutted to the side, close to the vibrating. Compared with the prior art, the utility model discloses a sounding device reliability is better.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

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

[ background of the invention ]

The sound generating device is also called a loudspeaker or a loudspeaker, and is applied to a sound box to convert an audio signal into sound for playing.

The sound production device of the related art comprises a vibration system for vibration sound production and a magnetic circuit system for driving the vibration system to vibrate and produce sound and having a magnetic gap, wherein the vibration system comprises a vibrating diaphragm, a voice coil inserted in the magnetic gap and driving the vibrating diaphragm to vibrate and produce sound and a framework connected with the voice coil and the vibrating diaphragm.

However, in the sound device in the related art, the bonding area between the voice coil and the bobbin is small, so that the voice coil and the bobbin are easily separated under high-power vibration sound generation of the sound device, and the reliability is poor.

Therefore, there is a need to provide a new sound generation device to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a better vocal device of reliability.

In order to achieve the above object, the present invention provides a sound generating device, comprising a vibration system for generating sound by vibration and a magnetic circuit system having a magnetic gap for driving the vibration system to generate sound by vibration, wherein the vibration system comprises a vibrating diaphragm, a voice coil inserted into the magnetic gap and driving the vibrating diaphragm to generate sound by vibration, and a frame connecting the voice coil and the vibrating diaphragm,

the framework comprises a framework body attached to one side, close to the voice coil, of the vibrating diaphragm, and a framework connecting arm which is bent and extends towards the magnetic gap from one end, far away from the vibrating diaphragm, of the framework body and is connected to the voice coil;

the framework connecting arm comprises a protruding portion, a first extending portion and a second extending portion, wherein the protruding portion is formed by protruding the magnetic circuit system and is close to one end of the vibrating diaphragm, the one end of the vibrating diaphragm is far away from the protruding portion, the one end of the framework body is along the outer side of the voice coil, the first extending portion is bent and extended, the first extending portion is far away from one end of the protruding portion, the second extending portion is abutted and fixed to one side, close to the vibrating diaphragm, of the voice coil, and the protruding portion and the first extending portion are abutted and fixed to one side, close to the framework, of the voice coil.

Preferably, the skeleton body is annular, the skeleton linking arm include a plurality ofly and equal mutual symmetry set up in the inboard of skeleton body.

Preferably, the voice coil is the runway type structure of taking the fillet, the skeleton linking arm includes four and each the skeleton linking arm connect in the fillet department of voice coil loudspeaker voice coil.

Preferably, the second extension portion of each skeleton connecting arm comprises two and is symmetrically arranged relative to the first extension portion.

Preferably, an orthographic projection of the second extension part to the voice coil along the vibration direction of the diaphragm completely falls within the range of the voice coil.

Preferably, the skeletal body includes a plurality of through-holes therethrough.

Preferably, the diaphragm includes an annular vibrating portion, an outward folded ring bent and extended from an outer peripheral edge of the vibrating portion, and an inward folded ring bent and extended from an inner peripheral edge of the vibrating portion, one side of the inward folded ring away from the vibrating portion is fixed to the magnetic circuit system, and the bobbin body is fixed to one side of the vibrating portion close to the voice coil.

Preferably, the sounder further comprises a basin frame for supporting and fixing the magnetic circuit system and the vibration system, and one side of the outward folding ring, which is far away from the vibration part, is fixed on the basin frame.

Preferably, the magnetic circuit system comprises a magnetic yoke fixed on the basin frame, a main magnetic steel unit fixed on the magnetic yoke, an auxiliary magnetic steel unit arranged on the periphery of the main magnetic steel unit at intervals and surrounding a magnetic gap together with the main magnetic steel unit, and a magnetic bowl covered on the main magnetic steel unit, wherein the periphery of the magnetic bowl is abutted and fixed on the auxiliary magnetic steel unit, and one side of the vibration part is far away from the inward-folding ring and fixed on the magnetic bowl.

Preferably, the sounding device further comprises an auxiliary diaphragm assembly fixed to the framework body and the side, close to the magnetic circuit system, of the basin frame.

Compared with the prior art, in the sound production device of the present invention, the bobbin connecting arm includes a protruding portion formed by protruding the end of the bobbin body away from the diaphragm toward the side close to the magnetic circuit system, a first extending portion bent and extended along the outer side of the voice coil from the end of the bobbin body away from the protruding portion toward the side close to the diaphragm, and a second extending portion bent and extended from the end of the voice coil away from the protruding portion from the first extending portion, the second extending portion is fixed in a butting manner on the side of the voice coil close to the diaphragm, and the protruding portion and the first extending portion are fixed in a butting manner on the side of the voice coil close to the bobbin at the same time; the bulge is added, the gluing area of the voice coil and the framework is increased, the binding force of the voice coil and the framework is improved, the bonding strength of the framework and the voice coil is enhanced, the problem of separation of the voice coil framework under high-power vibration and sounding of a sounding device can be improved, and the reliability is better.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of the sound device of the present invention;

fig. 2 is an exploded view of a part of the three-dimensional structure of the sound device of the present invention;

FIG. 3 is a cross-sectional view of the sound device of the present invention;

fig. 4 is a schematic view of an assembly structure of the voice coil and the frame of the sound device according to the present invention;

fig. 5 is a schematic view of the three-dimensional structure of the skeleton of the sound generating device of the present invention.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a sound generating device 100, which comprises a frame 1, a vibration system 2 supported and fixed on the frame 1, and a magnetic circuit system 3 driving the vibration system 2 to vibrate and generate sound and having a magnetic gap 30. The vibration system 2 may be fixed to the magnetic circuit system 3, and is not limited to the frame 1.

The vibration system 2 is used for vibrating and sounding, and comprises a diaphragm 21, a voice coil 22 inserted in the magnetic gap 30 and having a track-shaped structure with a round corner for driving the diaphragm 21 to vibrate and sound, a framework 23 and an auxiliary diaphragm assembly 24.

The diaphragm 21 includes a ring-shaped vibration portion 211, an outward folded ring 212 bent and extended from the outer periphery of the vibration portion 211, and an inward folded ring 213 bent and extended from the inner periphery of the vibration portion 211, the inward folded ring 213 is away from one side of the vibration portion 211 and fixed to the magnetic circuit system 3, and the outward folded ring 212 is away from one side of the vibration portion 211 and fixed to the frame 1.

One end of the framework 23 is connected with the ball diaphragm 21, and the other end of the framework 23 is connected with the voice coil 22.

Specifically, the bobbin 23 is including laminating in the vibrating diaphragm 21 is close to the bobbin body 231 of voice coil 22 one side, by the bobbin body 231 is kept away from the one end of vibrating diaphragm 21 to the magnetic gap 30 is buckled and is extended and connect in the bobbin connecting arm 232 of voice coil 22, the bobbin body 231 is fixed in the vibration portion 211 is close to one side of voice coil 22.

The bobbin connecting arm 232 includes a protruding portion 2321 formed by protruding from one end of the bobbin body 231 away from the diaphragm 21 to be close to the magnetic circuit system 3, a first extending portion 2322 extending from one end of the protruding portion 2321 away from the bobbin body 231 to be bent and extended along the outer side of the voice coil 22 to be close to the diaphragm 21, and a second extending portion 2323 extending from one end of the first extending portion 2322 away from the protruding portion 2321, wherein the second extending portion 2323 is fixed in an abutting manner on one side of the voice coil 22 close to the diaphragm 21, and the protruding portion 2321 and the first extending portion 2322 are fixed in an abutting manner on one side of the voice coil 22 close to the bobbin 23; the bobbin body 231 includes a plurality of through holes 2310 penetrating therethrough to balance air pressure.

In this embodiment, the bobbin connecting arm 232 is fixed to the voice coil 22 by gluing. The skeleton 23 increased with the skeleton linking arm 232 that voice coil 22 is connected, further, increased bellying 2321, increased the veneer area of voice coil 22 and skeleton 23 promptly, promoted voice coil 22 and skeleton 23 cohesion, strengthened skeleton 23 and voice coil 22's adhesive strength can improve the problem that voice coil 22 and skeleton 23 separated under the high-power vibration sound production of vocal ware 100, and the reliability is better.

Specifically, the skeleton body 231 is annular, and the skeleton connecting arm 232 includes a plurality of and equal phase symmetry set up in the inboard of skeleton body 231. Preferably, the bobbin connecting arms 232 include four and each bobbin connecting arm 232 is connected to a rounded corner of the voice coil 22; the second extension 2323 of each of the frame connecting arms 232 comprises two and is symmetrically disposed about the first extension 2322.

The second extension 2323 is along the vibration direction of vibrating diaphragm 21 to the orthographic projection of voice coil 22 falls into completely the voice coil 22 within range, guaranteeing promptly that voice coil 22 and skeleton 23 beat under the regional condition of gluing, reduce skeleton linking arm 232's material and volume, cost reduction, space utilization is better.

The auxiliary diaphragm assembly 24 is fixed to both the skeleton body 231 and the basin stand 1 near the magnetic circuit system 3.

The magnetic circuit system 3 comprises a magnetic yoke 31 fixed on the basin stand 1, a main magnetic steel unit 32 fixed on the magnetic yoke 31, an auxiliary magnetic steel unit 33 arranged on the peripheral side of the main magnetic steel unit 32 at intervals and enclosing a magnetic gap 30 together with the main magnetic steel unit 32, and a magnetic bowl 34 covered on the main magnetic steel unit 32, wherein the peripheral side of the magnetic bowl 34 is abutted and fixed on the auxiliary magnetic steel unit 33, and one side of the inward-folded ring 213 far away from the vibration part 211 is fixed on the magnetic bowl 34. The bobbin connecting arm 232 extends to the magnetic gap 30 through the gap between the magnetic bowl 34 and the auxiliary magnetic steel unit 33 in sequence and is connected with the voice coil 22.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A sound production device comprises a vibration system for vibration sound production and a magnetic circuit system which drives the vibration system to vibrate and produce sound and is provided with a magnetic gap, wherein the vibration system comprises a vibrating diaphragm, a voice coil which is inserted in the magnetic gap and drives the vibrating diaphragm to vibrate and produce sound and a framework which connects the voice coil and the vibrating diaphragm,

2. The sounding device according to claim 1, wherein the skeleton body is annular, and the skeleton connecting arm comprises a plurality of arms symmetrically arranged at the inner side of the skeleton body.

3. The sounding device according to claim 2, wherein the voice coil is a racetrack structure with rounded corners, and the bobbin connecting arms comprise four and each bobbin connecting arm is connected to a rounded corner of the voice coil.

4. The sounder device according to claim 2, wherein the second extension of each of the skeletal connecting arms comprises two and is disposed symmetrically about the first extension.

5. The sounding device according to claim 4, wherein the orthographic projection of the second extension portion to the voice coil along the vibration direction of the diaphragm falls completely within the range of the voice coil.

6. The sounder device according to claim 1, wherein the skeletal body comprises a plurality of through-holes therethrough.

7. The sounding device according to claim 1, wherein the diaphragm includes a ring-shaped vibrating portion, an outward folded ring extending from an outer periphery of the vibrating portion, and an inward folded ring extending from an inner periphery of the vibrating portion, a side of the inward folded ring away from the vibrating portion is fixed to the magnetic circuit system, and the bobbin body is fixed to a side of the vibrating portion close to the voice coil.

8. The sounder device according to claim 7, further comprising a frame for supporting and securing the magnetic circuit system and the vibration system, wherein a side of the outwardly folded ring remote from the vibrating portion is secured to the frame.

9. The sound production device according to claim 8, wherein the magnetic circuit system comprises a magnetic yoke fixed to the basin frame, a main magnetic steel unit fixed to the magnetic yoke, an auxiliary magnetic steel unit arranged on the periphery of the main magnetic steel unit at intervals and enclosing a magnetic gap with the main magnetic steel unit, and a magnetic bowl covered on the main magnetic steel unit, wherein the periphery of the magnetic bowl is abutted against and fixed to the auxiliary magnetic steel unit, and one side of the inward-folded ring away from the vibrating portion is fixed to the magnetic bowl.

10. The sounder device according to claim 8, further comprising an auxiliary diaphragm assembly fixed to both the skeletal body and the basin frame on a side thereof adjacent to the magnetic circuit system.