CN210093501U

CN210093501U - Loudspeaker

Info

Publication number: CN210093501U
Application number: CN201921033386.0U
Authority: CN
Inventors: 肖波; 令狐荣林; 刘晓东
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-06-29
Filing date: 2019-07-02
Publication date: 2020-02-18
Anticipated expiration: 2029-07-02
Also published as: WO2021000066A1

Abstract

The utility model provides a loudspeaker, include the basin frame and be fixed in respectively the vibration system of basin frame and have the magnetic circuit in magnetic gap. The vibration system comprises a vibrating diaphragm fixed on the basin frame and a voice coil inserted in the magnetic gap to drive the vibrating diaphragm to vibrate and sound. The magnetic circuit system comprises a magnetic yoke fixed on the basin frame, main magnetic steel fixed on the magnetic yoke, auxiliary magnetic steel and a pole core, wherein the auxiliary magnetic steel is respectively positioned on two opposite sides of the main magnetic steel and forms a magnetic gap with the main magnetic steel at intervals, and the pole core is arranged on the main magnetic steel in a stacked mode. The magnetic circuit system further comprises a clamping plate and two auxiliary magnetic steels, the clamping plate is arranged on the auxiliary magnetic steels in a stacked mode, the two auxiliary magnetic steels are arranged on the clamping plate in a stacked mode, the voice coil comprises two short sides arranged at intervals oppositely and two long sides respectively connected with the two short sides and arranged at intervals oppositely, and the long sides are of bent structures. The utility model provides a speaker improves effective magnetic gap length, improves the magnetic circuit force coefficient, has strengthened the acoustic performance and the reliability of vocal ware.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric field especially relates to a loudspeaker.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. Speakers for playing sound are widely used in smart mobile devices such as mobile phones. The vibration system and the magnetic circuit system applied to the loudspeaker are directly related to the sound quality of the loudspeaker.

The vibration system of the loudspeaker in the related art comprises a vibration diaphragm which is fixed on a basin frame and used for vibration and sound production, and a voice coil of the vibration diaphragm, wherein the magnetic circuit system comprises a magnetic yoke fixed on the basin frame, main magnetic steel fixed on the magnetic yoke, two auxiliary magnetic steels which are respectively arranged on two opposite sides of the main magnetic steel and form a magnetic gap with the main magnetic steel at intervals, clamping plates arranged on the auxiliary magnetic steels in a stacked manner, and auxiliary magnetic steels arranged on the clamping plates.

However, in the speaker of the related art, the voice coil, the pole piece and the main magnet are in a square ring structure, the clamping plate isolates the auxiliary magnet from the voice coil, and the design of the magnetic circuit system and the voice coil fails to fully exert the performance thereof, which limits the acoustic performance of the speaker.

Therefore, there is a need to provide a new speaker to solve the above technical problems.

[ Utility model ] content

At present, the voice coil in the related art is in a square frame annular structure, the auxiliary magnetic steel and the voice coil are isolated by a clamping plate, and the performance of a magnetic circuit system and the voice coil cannot be fully exerted by the design of the voice coil, so that the acoustic performance of the loudspeaker is limited.

The utility model provides a loudspeaker, include the basin frame and be fixed in respectively the vibration system of basin frame and have the magnetic circuit in magnetic gap, vibration system is including being fixed in the vibrating diaphragm of basin frame, insert and locate the magnetic gap is with the drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production, the voice coil loudspeaker voice coil includes two minor faces that relative interval set up and connects respectively two long limits that the relative interval of two minor faces set up, long limit is bending structure.

Preferably, the two long sides are convex towards the direction away from each other.

Preferably, the two long sides are concave towards the opposite direction.

Preferably, two long sides are provided with a bending structure with multiple bending sections.

Preferably, the two long edges provided with the multi-section bent parts are integrally concave towards the opposite directions of the two long edges.

Preferably, the voice coil is centrosymmetric.

Preferably, the magnetic circuit system comprises a magnetic yoke fixed on the basin frame, main magnetic steel fixed on the magnetic yoke, auxiliary magnetic steel and a pole core, wherein the auxiliary magnetic steel is respectively positioned on two opposite sides of the main magnetic steel and forms a magnetic gap with the main magnetic steel at intervals, the pole core is stacked on the main magnetic steel, the voice coil is inserted into the magnetic gap, and the structures of the main magnetic steel and the pole core are matched with the structure of the voice coil.

Preferably, the magnetic circuit system further comprises a clamping plate stacked on the auxiliary magnetic steel and two auxiliary magnetic steels stacked on the clamping plate.

Preferably, vice magnet steel, fold and locate splint and fold on the vice magnet steel are located supplementary magnet steel on the splint with the long limit of voice coil loudspeaker voice coil links to each other, vice magnet steel, splint and supplementary magnet steel with the structure that the voice coil loudspeaker voice coil links to each other with long limit structure suits.

Preferably, the surface of one side of the auxiliary magnetic steel is fixedly connected with the long edge of the voice coil, and the lower surface of the auxiliary magnetic steel is fixedly connected with the clamping plate.

Compared with the prior art, the utility model discloses a change the structure of voice coil loudspeaker voice coil adopts the long limit to be bending structure's voice coil loudspeaker voice coil, adds to fold and locates vice magnet steel's splint are located with folding the supplementary magnet steel of splint, supplementary magnet steel side surface with the long limit fixed connection of voice coil loudspeaker voice coil, supplementary magnet steel a lower surface with splint fixed connection, supplementary magnet steel with form the magnetic gap between the main magnet steel, effectively improve effective magnetic gap length, improve the magnetic circuit coefficient of force to effectively improve magnetic circuit's magnetic field intensity, promoted magnetic circuit's magnetic drive power and symmetry, thereby strengthened acoustic generator's acoustic performance and reliability.

[ 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 a first embodiment of a speaker according to the present invention;

FIG. 2 is an exploded view of the first embodiment shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line III-III of the embodiment of FIG. 1;

FIG. 4 is a cross-sectional view of the embodiment of FIG. 1 taken along line IV-IV;

fig. 5 is an exploded view of a second embodiment of the speaker according to the present invention;

fig. 6 is an exploded structural view of a third embodiment of the speaker provided by 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.

Example one

Referring to fig. 1-4, fig. 1 is a schematic perspective view of a first embodiment of a speaker according to the present invention, fig. 2 is an exploded view of the first embodiment shown in fig. 1, fig. 3 is a sectional view along line III-III of the first embodiment shown in fig. 1, and fig. 4 is a sectional view along line IV-IV of the first embodiment shown in fig. 1. The loudspeaker 100 comprises a frame (not shown), a vibration system 10 and a magnetic circuit system 30 accommodated in the frame.

The vibration system 10 includes a diaphragm 11 and a voice coil 11 for driving the diaphragm to vibrate and generate sound. The vibrating diaphragm vibrates and produces sound under the driving of the voice coil 11, and converts an electric signal into a sound signal. The voice coil is centrosymmetric.

The magnetic circuit system 30 includes a magnetic yoke 31 fixed to the frame, a main magnetic steel 32 fixed to the magnetic yoke 31, auxiliary magnetic steels 33 respectively located on two opposite sides of the main magnetic steel 32 and spaced from the main magnetic steel 32 to form a magnetic gap 35, a pole core 34 stacked on one side of the main magnetic steel 32 close to the diaphragm, a clamping plate 36 stacked on the auxiliary magnetic steel 33, and two auxiliary magnetic steels 37 stacked on the clamping plate 36. The number of the auxiliary magnetic steels 33 is two, and the two auxiliary magnetic steels 33 are symmetrically arranged on two sides of the main magnetic steel 32 and are spaced from the main magnetic steel 32 to form a magnetic gap 35.

The voice coil 11 includes two short sides 113 parallel to each other and two long sides 111 connected to the two short sides 113 respectively and enclosing to form a closed structure, and the long side 111 is at least a bending structure. In this embodiment, the long sides 111 are a curved structure, and the two long sides are convex outward in a direction away from each other. The structure of the main magnet 32 and the pole piece 34 is adapted to the structure of the voice coil 11. The auxiliary magnetic steel 33, the clamping plate 36 arranged on the auxiliary magnetic steel 33 in an overlapped mode and the auxiliary magnetic steel 37 arranged on the clamping plate 36 in an overlapped mode are connected with the long edge 111 of the voice coil, and the structures, connected with the voice coil 11, of the auxiliary magnetic steel 33, the clamping plate 36 and the auxiliary magnetic steel 37 are matched with the long edge 111 in a structure, and are of an outward protruding structure.

Specifically, the clamping plate 36 includes two first segments 361 respectively stacked on the secondary magnetic steel 33 and two second segments 363 connecting the two first segments 361, and the two second segments 363 are oppositely disposed at an interval and form a closed structure together with the two first segments 361. The first segment 361 includes a first body 3611 stacked on the auxiliary magnetic steel 33, a recess 3615 formed by the first body 3611 being close to one side of the auxiliary magnetic steel 33, and an extending portion 3613 formed by bending and extending the first body 3611 to be close to the second segment 363. The receding groove 3615 is fixedly attached to the auxiliary magnetic steel 33.

The first body 3611 is a flat surface, and the auxiliary magnetic steels 37 are respectively fixed on the surfaces of the two first bodies 3611 in an overlapping manner. The extension 3613 causes the second segment 363 to be farther from the voice coil than the first segment 361.

In this embodiment, the two auxiliary magnetic steels 37 respectively contact the two extending portions 3613, and more preferably, one side surface of the auxiliary magnetic steel 37 is fixedly connected to the long side 111 of the voice coil 11, and a lower surface of the auxiliary magnetic steel 37 is fixedly connected to the extending portion 3613. Meanwhile, as the auxiliary magnetic steel 37 is of a convex structure, a magnetic gap 35 is formed between the auxiliary magnetic steel 37 and the main magnetic steel 32, the effective magnetic gap length is effectively increased, and the magnetic circuit force coefficient is increased, so that the magnetic field strength of the magnetic circuit system 30 is effectively increased, the magnetic driving force and the symmetry of the magnetic circuit system 30 are improved, and the acoustic performance and the reliability of the acoustic generator 100 are enhanced.

Example two

Referring to fig. 5, fig. 5 is an exploded view of a second speaker embodiment 200 according to the present invention. The second embodiment is basically the same as the first embodiment, and the definition symbols are basically the same, and only the differences are listed below. In this embodiment, the long sides 111 are a curved structure, and the two long sides are concave towards the opposite directions. The auxiliary magnetic steel 33, the clamping plate 36 stacked on the auxiliary magnetic steel 33 and the auxiliary magnetic steel 37 stacked on the clamping plate 36 are connected with the long edge 111 of the voice coil, and the structures of the auxiliary magnetic steel, the clamping plate and the auxiliary magnetic steel connected with the voice coil are concave bending structures.

Referring to fig. 6, fig. 6 is an exploded view of a third embodiment 300 of a speaker according to the present invention. The second embodiment is basically the same as the first embodiment, and the definition symbols are basically the same, and only the differences are listed below. In this embodiment, two long limit is for being equipped with the curved structure that the multistage was buckled, and two long limits that are equipped with the multistage and buckle are wholly to be towards the two orientation indent in opposite directions. The auxiliary magnetic steel 33, the clamping plate 36 stacked on the auxiliary magnetic steel 33 and the auxiliary magnetic steel 37 stacked on the clamping plate 36 are connected with the long edge 111 of the voice coil, and the structures of the auxiliary magnetic steel, the clamping plate and the auxiliary magnetic steel connected with the voice coil are a plurality of continuous bending structures.

Compared with the prior art, the utility model discloses a change the structure of voice coil loudspeaker voice coil adopts the long limit to be the voice coil loudspeaker voice coil of an at least bending structure, adds to fold and locates vice magnet steel's splint are located with folding the supplementary magnet steel of splint, supplementary magnet steel a side surface with the long limit fixed connection of voice coil loudspeaker voice coil, supplementary magnet steel a lower surface with splint fixed connection, supplementary magnet steel 37 with form magnetic gap 35 between the main magnet steel 32, effectively improve effective magnetic gap length, improve the magnetic force coefficient to effectively improve magnetic circuit 30's magnetic field intensity, promoted magnetic circuit 30's magnetic actuating force and symmetry, thereby strengthened vocal ware 100's acoustic performance and reliability.

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. The utility model provides a loudspeaker, includes the basin frame and is fixed in respectively the vibration system of basin frame and the magnetic circuit that has the magnetic gap, vibration system is including being fixed in the vibrating diaphragm of basin frame, insert and locate the magnetic gap is in order to drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production, a serial communication port, the voice coil loudspeaker voice coil includes two minor faces that relative interval set up and connects respectively two long limits that the relative interval of two minor faces set up, long limit is bending structure.

2. A loudspeaker according to claim 1, wherein the two long sides are convex in a direction away from each other.

3. The loudspeaker of claim 1, wherein the two long sides are concave toward each other.

4. The loudspeaker of claim 1, wherein two of said long sides are of a curved configuration provided with a plurality of bends.

5. The loudspeaker of claim 4, wherein the two long sides with the multi-segment bends are concave towards the opposite direction.

6. The loudspeaker of claim 1, wherein said voice coil is centrosymmetric.

7. The loudspeaker of claim 1, wherein the magnetic circuit system comprises a magnetic yoke fixed to the frame, a main magnetic steel fixed to the magnetic yoke, auxiliary magnetic steels respectively located on opposite sides of the main magnetic steel and spaced from the main magnetic steel to form the magnetic gap, and a pole core stacked on the main magnetic steel, the voice coil is inserted into the magnetic gap, and the main magnetic steel and the pole core have structures corresponding to the structures of the voice coil.

8. The loudspeaker of claim 7, wherein the magnetic circuit further comprises a clamping plate stacked on the secondary magnetic steel and two secondary magnetic steels stacked on the clamping plate.

9. The loudspeaker of claim 7, wherein the auxiliary magnetic steel, the clamping plate stacked on the auxiliary magnetic steel and the auxiliary magnetic steel stacked on the clamping plate are connected with the long edge of the voice coil, and the structures of the auxiliary magnetic steel, the clamping plate and the auxiliary magnetic steel connected with the voice coil are adapted to the long edge structure.

10. The loudspeaker of claim 8, wherein one side surface of the auxiliary magnetic steel is fixedly connected with the long side of the voice coil, and a lower surface of the auxiliary magnetic steel is fixedly connected with the clamping plate.