CN218416654U

CN218416654U - Miniature loudspeaker

Info

Publication number: CN218416654U
Application number: CN202220275831.XU
Authority: CN
Inventors: 林嘉平; 董庆宾
Original assignee: Shenzhen Weishi Acoustics Co Ltd
Current assignee: Shenzhen Weishi Acoustics Co Ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2023-01-31
Anticipated expiration: 2032-02-08

Abstract

The utility model belongs to the technical field of the speaker, specifically disclose a miniature speaker, be in including basin frame and range upon range of setting voice coil loudspeaker voice coil and skeleton in the basin frame, be equipped with centering branch piece on the inside wall of basin frame, be equipped with the skeleton straight flange on the skeleton, be equipped with the centering branch piece straight flange that is L shape on the centering branch piece, the medial surface that centering branch piece straight flange corresponds L shape bonds with the lateral surface of skeleton straight flange mutually. Adopt the utility model discloses, can increase the bonding area of centering disk and skeleton straight flange to increase bonding force, and then promote the fixed strength of centering disk and skeleton straight flange, improve skeleton and centering disk and easily appear fracture, phenomenons such as separation.

Description

Miniature loudspeaker

Technical Field

The utility model relates to a speaker technical field especially relates to a miniature speaker.

Background

The micro-speaker is used as a device capable of converting electric energy into sound energy, and is widely applied to micro-electronic equipment such as smart phones, camcorders, cameras, notebook computers and the like, and generally comprises a magnetic circuit component, a vibration system and a supporting system, wherein the vibration system comprises a vibrating diaphragm, a framework, a voice coil and a centering support piece, the framework is positioned between the vibrating diaphragm and the voice coil, the centering support piece is used for connecting the framework and the voice coil into a whole, the voice coil is ensured to be vertical without deflection, and the polarization of the vibrating diaphragm is effectively prevented.

The bonding structure of the framework and the centering support sheet in the prior art is as follows: the end face, far away from the framework, of the straight side of the framework is bonded with the upper end face of the centering support piece, however, the area of the end face of the straight side of the framework is small, so that the bonding area of the straight side of the framework and the centering support piece is insufficient, the bonding force is weak, and the centering support piece and the bottom of the straight side of the framework are prone to cracking and separating after long-term use, so that noise is generated, even the service life of the micro-speaker is affected and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem of providing a miniature loudspeaker, increase skeleton straight flange and the bonding area of centring disk.

In order to solve the technical problem, the utility model discloses a technical scheme be:

the utility model provides a micro loudspeaker, is in including basin frame and range upon range of setting voice coil loudspeaker voice coil and skeleton in the basin frame, be equipped with the centering piece on the inside wall of basin frame, be equipped with the skeleton straight flange on the skeleton, be equipped with the centering piece straight flange that is L shape on the centering piece, the medial surface that the centering piece straight flange corresponds L shape bonds with the lateral surface of skeleton straight flange mutually.

Furthermore, two ends of the straight edge of the centering branch piece are both circular arcs.

Furthermore, one end of the straight edge of the framework, which is far away from the framework, is provided with a framework outer fixing part, and the framework outer fixing part is adhered to the centering support sheet.

Furthermore, the straight edge of the framework is vertical to the external fixed part of the framework.

Furthermore, a gap is formed between the voice coil and the straight edge of the framework, an outer magnet and an outer washer are arranged in the basin frame in a stacked mode, and the outer magnet and the outer washer are located in the gap.

Furthermore, the outer magnet steel is not in contact with the straight edge of the framework and the voice coil, and the outer washer is not in contact with the straight edge of the framework and the voice coil.

Furthermore, a gap is formed between the voice coil and the straight edge of the framework, a magnetic cover is arranged in the basin frame, the magnetic cover is provided with a straight edge of the magnetic cover, and the straight edge of the magnetic cover is located in the gap.

Furthermore, the straight sides of the magnetic cover are not contacted with the straight sides of the voice coil and the framework.

The beneficial effects of the utility model reside in that:

adopt the technical scheme provided by the utility model, through add a centering disk straight flange on the centering disk, the medial surface of centering disk straight flange bonds with the lateral surface of skeleton straight flange, can increase the bonding area of skeleton straight flange and centering disk, and then promotes the fixed strength of centering disk and skeleton straight flange, improves phenomenons such as the fracture, the separation that skeleton and centering disk are very easily appeared.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic view of the structure of the present invention in which a straight edge of a frame is bonded to a straight edge of a centering disk;

fig. 3 is a schematic structural diagram of the speaker of the present invention;

FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view taken at A in FIG. 4;

FIG. 6 is a schematic structural view of the outer frame fixing portion of the present invention bonded to the centering pad;

FIG. 7 is a perspective view of the frame of the present invention with the frame outer fixing portion;

description of reference numerals:

1. a basin stand;

2. a voice coil;

3. a framework; 31. straight sides of the framework; 32. a frame outer fixing portion;

4. a centering disk; 41. centering the straight edge of the support piece;

5. external magnetic steel;

6. a washer;

7. a magnetic shield; 71. the magnetic shield is straight.

8. Vibrating diaphragm;

9. a ball top;

10. and a magnetic circuit assembly.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 5, a micro-speaker, is in including basin frame 1 and range upon range of setting voice coil loudspeaker voice coil 2 and skeleton 3 in the basin frame 1, be equipped with centering disk 4 on the inside wall of basin frame 1, be equipped with skeleton straight flange 31 on the skeleton 3, be equipped with centering disk straight flange 41 that is the L shape on the centering disk 4, the medial surface that centering disk straight flange 41 corresponds the L shape bonds with the lateral surface of skeleton straight flange 31 mutually.

The use principle is as follows:

the outer side face of the framework straight edge 31 on the framework 3 and the inner side face of the centering branch piece straight edge 41 on the centering branch piece 4 are mutually attached and bonded and fixed in the vertical direction, compared with the structure that the end face of the framework straight edge 31 is bonded with the centering branch piece 4, the technical scheme has the advantages that the bonding area of the straight edge side faces of the framework 3 and the centering branch piece 4 is increased; by adopting the technical scheme, the bonding area between the framework straight edge 31 and the centering support sheet 4 can be increased, so that the fixing strength between the centering support sheet 4 and the framework straight edge 31 is improved, and the phenomena of cracking, separation and the like which easily occur between the framework 3 and the centering support sheet 4 are improved.

Further, referring to fig. 1, both ends of the straight edge 41 of the centering branch piece are circular arcs.

As can be seen from the above description, the two ends of the straight edge 41 of the centering branch piece are circular arcs, so that the framework 3 can be more firmly bonded with the centering branch piece 4.

Further, referring to fig. 6 and 7, the end of the straight frame edge 31 away from the frame 3 has a frame outer fixing portion 32, and the frame outer fixing portion 32 is adhered to the centering branch piece 4.

As is apparent from the above description, the bonding area of the bobbin 3 and the damper 4 can be further increased.

Further, referring to fig. 6 and 7, the frame straight edge 31 is perpendicular to the frame outer fixing portion 32.

As is apparent from the above description, the bobbin external fixing portion 32 can be bonded to the damper 4 without a gap, and the bonding strength can be improved.

Further, referring to fig. 5, a gap is formed between the voice coil 2 and the straight frame edge 31, an external magnet 5 and an external washer 6 are stacked in the basin stand 1, and both the external magnet 5 and the external washer 6 are located in the gap.

From the above description, it can be known that the external magnet 5 and the external washer 6 are designed in the gap, the external magnet 5 can increase the volume of the whole magnet steel of the micro-speaker, and meanwhile, the external washer 6 leads the magnetic induction lines of the external magnet 5 to the magnetic gap to form a complete magnetic loop, so as to avoid the reduction of performance sensitivity.

Further, referring to fig. 5, none of the outer magnets 5 is in contact with the voice coil 2 and the bobbin straight edge 31, and none of the outer washers 6 is in contact with the voice coil 2 and the bobbin straight edge 31.

As can be seen from the above description, with the technical solution, firstly, the voice coil 2 can be prevented from rubbing against the external magnet 5 and the external washer 6 during the vibration process, and the loudspeaker is prevented from generating noise; secondly, because the outer magnet 5 and the outer washer 6 are hard, if the voice coil 2 rubs against the outer magnet 5 and the outer washer 6, the voice coil is damaged and disconnected from the power connection end.

Further, referring to fig. 6, a gap is formed between the voice coil 2 and the framework straight edge 31, a magnetic cover 7 is arranged in the frame 1, the magnetic cover 7 is provided with a magnetic cover straight edge 71, and the magnetic cover straight edge 71 is located in the gap.

As can be seen from the above description, referring to fig. 6, firstly, a straight side of the magnetic shield is designed in the gap, and the magnetic induction line of the central magnetic steel near the magnetic shield side is guided into the magnetic gap through the straight side of the magnetic shield to form a complete magnetic loop, thereby avoiding the reduction of performance sensitivity; secondly, the magnetic cover straight edge 71 can be additionally arranged through the arrangement of the gap, so that the magnetic field intensity is improved, and further the amplitude of the voice coil 2 is improved.

Further, referring to fig. 6, none of the straight sides 71 of the magnetic cover contacts the straight sides 31 of the voice coil 2 and the bobbin.

As can be seen from the above description, firstly, the voice coil 2 can be prevented from rubbing against the straight edge 71 of the magnetic cover during vibration, and noise of the speaker can be prevented; secondly, because the straight edge 71 of the magnetic cover is hard, if the voice coil 2 rubs against the straight edge 71 of the magnetic cover, the voice coil will be damaged and the voice coil will be disconnected from the electric terminals.

Application scenarios

The miniature loudspeaker is a device capable of converting electric energy into sound energy, and can be widely applied to microelectronic equipment such as smart phones, camcorders, cameras, notebook computers and the like.

The embodiment of the utility model discloses a do:

referring to fig. 1, a micro speaker includes a magnetic circuit assembly 10, two centering pads 4, a frame 1, a voice coil 2, a framework 3, a vibrating diaphragm 8 and a dome 9, where the magnetic circuit assembly 10 may be a magnetic cover 7 or a magnetic circuit assembly 10 composed of magnetic steel and washers, the magnetic circuit assembly 10 provides a vibrating magnetic force for the voice coil 2, the voice coil 2 is movably disposed in the framework 3, the two centering pads 4 are respectively clamped on two sides of the framework 3, the vibrating diaphragm 8 is sleeved outside the framework 3, the dome 9 covers a top surface of the vibrating diaphragm 8, the magnetic circuit assembly 10 is disposed at a bottom of the framework 3 to provide a vibrating magnetic force for the voice coil 2, and the frame 1 is used to fix the magnetic circuit assembly 10, the two centering pads 4, the voice coil 2, the framework 3, the vibrating diaphragm 8 and the dome 9 to form a micro speaker;

referring to fig. 1 to 5, a skeleton straight edge 31 is arranged on the skeleton 3, referring to fig. 6 and 7, one end of the skeleton straight edge 31, which is far away from the skeleton 3, is provided with a skeleton outer fixing portion 32, the skeleton straight edge 31 is perpendicular to the skeleton outer fixing portion 32, and substantially, the skeleton straight edge 31 can also be regarded as a straight plate structure which is arranged vertically downward, the skeleton outer fixing portion 32 is regarded as a straight plate structure which is arranged horizontally, the skeleton outer fixing portion 32 is bonded to the top surface of the centering sheet 4 in a seamless manner, an L-shaped centering sheet straight edge 41 is arranged on the centering sheet 4, the centering sheet straight edge 41 can be regarded as a straight plate structure which is arranged vertically upward, both ends of the centering sheet straight edge 41 are circular arcs, both ends of the skeleton straight edge 31 are also provided with circular arcs which are matched with the centering sheet straight edge 41, referring to fig. 2 and 4, an inner side surface of the centering sheet straight edge 41, which corresponds to the L shape, is bonded to an outer side surface of the skeleton straight edge 31;

referring to fig. 5, because the voice coil 2 is arranged in the bobbin 3 and is not bonded to the centering support 4, the volume of the voice coil 2 can be properly reduced, a certain gap is left between the voice coil 2 and the bobbin straight edge 31, the outer magnet 5 and the outer washer 6 which are arranged in a stacked manner can be additionally arranged in the basin frame 1 through the gap, the outer magnet 5 and the outer washer 6 are both positioned in the gap, the outer magnet 5 is not in contact with the voice coil 2 and the bobbin straight edge 31, the outer washer 6 is not in contact with the voice coil 2 and the bobbin straight edge 31, and the magnetic circuit assembly 10 can be improved to provide vibrating magnetic force for the voice coil 2 by additionally arranging the outer magnet 5 and the outer washer 6, so that the voice coil 2 can obtain larger amplitude;

referring to fig. 6, the outer magnet 5 and the outer washer 6 may be replaced with a magnetic cover 7, the magnetic cover 7 is provided with a magnetic cover straight edge 71, the magnetic cover straight edge 71 extends into the gap, the magnetic cover straight edge 71 is not in contact with the voice coil 2 and the skeleton straight edge 31, and the magnetic cover 7 is enlarged to improve the magnetic force of the magnetic circuit assembly 10 providing vibration for the voice coil 2, so that the voice coil 2 can obtain larger amplitude.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a micro loudspeaker, is in including basin frame and range upon range of setting voice coil loudspeaker voice coil and skeleton in the basin frame, be equipped with the centering piece on the inside wall of basin frame, be equipped with the skeleton straight flange on the skeleton, its characterized in that, be equipped with the centering piece straight flange that is L shape on the centering piece, the medial surface that the centering piece straight flange corresponds L shape bonds with the lateral surface of skeleton straight flange mutually.

2. The micro-speaker as claimed in claim 1, wherein both ends of the straight side of the centering branch piece are circular arcs.

3. The micro-speaker of claim 1, wherein the end of the straight side of the frame away from the frame has an outer frame fixing portion, and the outer frame fixing portion is adhered to the centering disk.

4. The micro-speaker of claim 3, wherein the straight sides of the frame are perpendicular to the external frame fixing portions.

5. The micro-speaker of claim 1, wherein a gap is formed between the voice coil and the straight side of the framework, an external magnet and an external washer are arranged in the frame in a laminated manner, and the external magnet and the external washer are both positioned in the gap.

6. The micro-speaker of claim 5, wherein none of the outer magnets is in contact with a straight edge of the voice coil and a straight edge of the bobbin, and none of the outer washers is in contact with a straight edge of the voice coil and a straight edge of the bobbin.

7. The micro-speaker of claim 1, wherein a gap is provided between the voice coil and the straight side of the bobbin, and a magnetic shield is provided in the bobbin, the magnetic shield having a magnetic shield straight side, the magnetic shield straight side being located in the gap.

8. The micro-speaker of claim 7, wherein none of the straight sides of the magnetic shield contacts the straight sides of the voice coil and the bobbin.