CN218416649U

CN218416649U - Miniature loudspeaker

Info

Publication number: CN218416649U
Application number: CN202220257237.8U
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 vice membrane on the inside wall of basin frame, be equipped with the skeleton straight flange on the skeleton, vice epimembranal vice membrane straight flange that is L shape that is equipped with, the medial surface that vice membrane 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 vice membrane and skeleton straight flange to increase bonding force, and then promote the fixed strength of vice membrane and skeleton straight flange, improve the skeleton and easily appear the fracture with vice membrane, 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, 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 an auxiliary membrane, the framework is positioned between the vibrating diaphragm and the voice coil, the auxiliary membrane 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 auxiliary membrane in the prior art is as follows: the end face of the straight side of the framework, which is far away from the framework, is bonded with the upper end face of the auxiliary membrane, however, the area of the end face of the straight side of the framework is small, so that the bonding area with the auxiliary membrane is insufficient, the bonding force is weak, and the phenomena that the auxiliary membrane is cracked and separated from the bottom of the straight side of the framework easily after long-term use, noise is generated, and even the service life of the micro-speaker is influenced are easily caused.

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 micro speaker, increase the bonding area of skeleton straight flange and vice membrane.

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 vice membrane on the inside wall of basin frame, be equipped with the skeleton straight flange on the skeleton, be equipped with the vice membrane straight flange that is L shape on the vice membrane, the medial surface that vice membrane straight flange corresponds L shape bonds with the lateral surface of skeleton straight flange mutually.

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 auxiliary membrane.

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 an auxiliary membrane straight flange on auxiliary membrane, the medial surface of auxiliary membrane straight flange bonds with the lateral surface of skeleton straight flange, can increase the bonding area of skeleton straight flange and auxiliary membrane, and then promotes the fixed strength of auxiliary membrane and skeleton straight flange, improves phenomenons such as the fracture that skeleton and auxiliary membrane very easily appear, separation.

Drawings

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

FIG. 2 is a schematic structural view of the present invention showing the bonding of the straight side of the frame and the straight side of the auxiliary membrane;

fig. 3 is a schematic structural view 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 view of the structure of the present invention in which the outer frame fixing part is bonded to the auxiliary film;

FIG. 7 is a perspective view of the frame of the present invention with an outer frame 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 secondary membrane; 41. straight edges of the secondary membrane;

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 contents, 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 vice membrane 4 on the inside wall of basin frame 1, be equipped with skeleton straight flange 31 on the skeleton 3, be equipped with the vice membrane straight flange 41 that is the L shape on vice membrane 4, the medial surface that vice membrane 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 auxiliary film straight edge 41 on the auxiliary film 4 are mutually pasted 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 auxiliary film 4, the technical scheme has the advantages that the bonding area of the straight edge side faces of the framework 3 and the auxiliary film 4 is increased; by adopting the technical scheme, the bonding area of the framework straight edge 31 and the auxiliary membrane 4 can be increased, so that the fixing strength of the auxiliary membrane 4 and the framework straight edge 31 is improved, and the phenomena of cracking, separation and the like which are easy to occur between the framework 3 and the auxiliary membrane 4 are improved.

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 secondary membrane 4.

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

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

As is apparent from the above description, the bobbin external fixing portion 32 can be bonded to the top surface of the sub-film 4 without a gap, and the bonding strength can be improved.

Further, referring to fig. 6, 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. 6, the outer magnet 5 is not in contact with the voice coil 2 and the bobbin straight side 31, and the outer washer 6 is not in contact with the voice coil 2 and the bobbin straight side 31.

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

Further, referring to fig. 5, a gap is formed between the voice coil 2 and the framework straight edge 31, a magnetic cover 7 is arranged in the basin 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. 5, firstly, a straight side of the magnetic shield is designed in the gap, and the magnetic induction line of the central magnetic steel close to 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. 5, 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 the straight edge 71 of the magnetic cover during vibration, and noise of the loudspeaker 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 is damaged and 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 secondary films 4, a frame 1, a voice coil 2, a frame 3, a 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 frame 3, the two secondary films 4 are respectively disposed on two sides of the frame 3 and are bonded with the frame 3, the diaphragm 8 is sleeved outside the frame 3, the dome 9 covers a top surface of the diaphragm 8, the magnetic circuit assembly 10 is disposed at a bottom of the frame 3 and provides a vibrating magnetic force for the voice coil 2, and the frame 1 is used to fix the magnetic circuit assembly 10, the two secondary films 4, the voice coil 2, the frame 3, the diaphragm 8 and the dome 9 to form a micro speaker;

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

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

referring to fig. 5, 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 the patent scope of the present invention is not limited thereby, and 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 vice membrane 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 vice membrane straight flange that is L shape on the vice membrane, the medial surface that vice membrane straight flange corresponds L shape bonds mutually with the lateral surface of skeleton straight flange.

2. 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 secondary membrane.

3. The micro-speaker of claim 2, wherein the straight sides of the frame are perpendicular to the external frame fixation portions.

4. The micro-speaker according to claim 1, wherein a gap is formed between the voice coil and the straight side of the frame, an external magnet and an external washer are arranged in the frame in a stacked manner, and both the external magnet and the external washer are located in the gap.

5. The micro-speaker of claim 4, 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.

6. The micro-speaker of claim 1, wherein a gap is formed between the voice coil and the straight side of the frame, and a magnetic cover is disposed in the frame, the magnetic cover having a straight side of the magnetic cover, the straight side of the magnetic cover being located in the gap.

7. The micro-speaker of claim 6, wherein none of the straight sides of the magnetic shield contacts the straight sides of the voice coil and the bobbin.