CN211267079U

CN211267079U - Miniature loudspeaker

Info

Publication number: CN211267079U
Application number: CN202020248450.3U
Authority: CN
Inventors: 冯诗琳
Original assignee: Shenzhen Heng Sheng Tong Technology Co ltd
Current assignee: Shenzhen Heng Sheng Tong Technology Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-08-14
Anticipated expiration: 2030-03-02

Abstract

The utility model provides a micro loudspeaker, which relates to the technical field of loudspeakers and comprises a chassis, a magnetic circuit system is arranged right above the chassis, the magnetic circuit system is fixedly connected with the right above the chassis, a basin frame is arranged right above the chassis, the basin frame is fixed through a gap between the magnetic circuit system, a clamping block is fixedly connected above the basin frame, a containing cavity is arranged in the middle of the basin frame, a voice coil is arranged right above the basin frame, and the voice coil is positioned in the containing cavity, when the voice coil vibrates, because a centering support and a voice coil lead wire synchronously vibrate, the pulling condition between the voice coil lead wire and the basin frame can be avoided, the length of the voice coil lead wire is greatly shortened, thereby the weight of the voice coil lead wire is lightened, the influence of the voice coil lead wire on the vibration of the voice coil is further reduced, the vibration system of the loudspeaker can be more balanced when vibrating, the problem of voice coil polarization can be improved, and the collision of the centering support and, reducing the occurrence of noise.

Description

Miniature loudspeaker

Technical Field

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

Background

The micro speaker is a device capable of converting electric energy into sound energy, and is widely applied to microelectronic devices such as smart phones, IPADs, notebook computers and the like, wherein the microelectronic devices tend to be miniaturized and light and thin at present, and the requirement of large loudness is required to be met under certain conditions.

With the rapid development of microelectronic devices, the size requirement of micro speakers arranged inside the microelectronic devices is increasing day by day, and the micro speakers have to follow the great trend of miniaturization and light and thin of microelectronic devices; the loudspeaker of conventional structure can not meet the requirements of light, thin and small equipment complete machine, and the micro loudspeaker generally comprises a magnetic circuit system, a vibration system and a support system, wherein the vibration system comprises a spherical sound film, a voice coil and a centering support sheet, the centering support sheet is used for connecting the sound film and the voice coil into a whole, the voice coil is ensured to be vertical without deflection, the polarization of the sound film is effectively prevented, and the noise generated by collision between the centering support sheet and the sound film under the large-amplitude vibration is prevented.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a micro loudspeaker.

In order to achieve the above purpose, the utility model adopts the following technical scheme: be equipped with magnetic circuit directly over the chassis, and magnetic circuit and chassis directly over fixed connection, be equipped with the basin frame directly over the chassis, and the basin frame passes through the gap between the magnetic circuit and fixes, basin frame top fixedly connected with fixture block, seted up in the middle of the basin frame and held the chamber, be equipped with the voice coil loudspeaker voice coil directly over the basin frame, and the voice coil loudspeaker voice coil is located and holds the intracavity.

Preferably, the magnetic circuit system comprises central magnetic steel and side magnetic steel, the central magnetic steel is fixed in the middle of the chassis, and the side magnetic steel is respectively fixed on four sides of the chassis.

Preferably, a centering support sheet is arranged above the basin frame and is abutted against the upper side of the basin frame, clamping grooves are formed in two sides of the centering support sheet, and the clamping grooves are in sleeve joint with the clamping blocks.

Preferably, a voice coil is arranged below the centering support piece, and the voice coil is fixedly connected with the lower portion of the centering support piece.

Preferably, a sound film is arranged right above the centering support piece and is abutted against the centering support piece, and a mesh cloth is arranged on the surface of the sound film and is adhered to the surface of the sound film.

Preferably, the surface of the mesh cloth is provided with sound transmission holes.

Advantageous effects

1. The utility model discloses in, adopt vibration system, it is crooked not to realize the voice coil loudspeaker voice coil, prevent the sound membrane polarization, the voice coil loudspeaker voice coil is the rectangle and encircles around central magnet steel, the four corners of voice coil loudspeaker voice coil has the circular arc excessive, sound membrane and centring disk are connected on a side end face of voice coil loudspeaker voice coil, in the vibration of voice coil loudspeaker voice coil, because centring disk and voice coil lead wire are in synchronous vibration, can avoid producing the condition of dragging between voice coil loudspeaker voice coil lead wire and the basin frame, very big length of subtracting the short voice coil loudspeaker voice coil lead wire, thereby alleviate the weight of voice coil loudspeaker voice coil lead wire, and then reduced the influence of voice coil loudspeaker voice coil lead wire when vibrating to the voice coil loudspeaker voice coil, make the vibration system of speaker can be more balanced when vibrating, can improve the problem of voice coil loudspeaker voice coil polarization, prevented simultaneously that centring disk and sound.

Drawings

Fig. 1 is a schematic perspective view of a micro speaker according to the present invention;

fig. 2 is a top view of a micro-speaker according to the present invention;

fig. 3 is a top view of a damper of a micro-speaker according to the present invention.

Illustration of the drawings:

1. screen cloth; 2. a sound membrane; 3. a centering support; 4. a voice coil; 5. a basin stand; 6. an accommodating chamber; 7. a clamping block; 8. edge magnetic steel; 9. central magnetic steel; 10. a magnetic circuit system; 11. a chassis; 12. a sound transmission hole; 31. a clamping groove.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-3, a micro-speaker, comprising a chassis 11, a magnetic circuit system 10 is arranged over the chassis 11, the magnetic circuit system 10 is fixedly connected with the chassis 11, a frame 5 is arranged over the chassis 11, the frame 5 is fixed by a gap between the magnetic circuit systems 10, a fixture block 7 is fixedly connected with the upper side of the frame 5, a containing cavity 6 is arranged in the middle of the frame 5, a voice coil 4 is arranged over the frame 5, the voice coil 4 is located in the containing cavity 6, the voice coil 4 is rectangular and surrounds a central magnetic steel 9, four corners of the voice coil 4 are in arc transition, a voice diaphragm 2 and a centering support 3 are connected with one side end face of the voice coil 4, when the voice coil 4 vibrates, the centering support 3 and the voice coil 4 lead vibrate synchronously, so that the situation of pulling between the voice coil 4 lead and the frame 5 can be avoided, and the length of the voice coil 4 lead can be greatly shortened, thereby reducing the weight of the lead wire of the voice coil 4, further reducing the influence of the lead wire of the voice coil 4 on the vibration of the voice coil 4, leading the vibration system of the loudspeaker to be more balanced when vibrating, improving the problem of the polarization of the voice coil 4, simultaneously preventing the centering support 3 from colliding with the sound film 2 under the large-amplitude vibration, reducing the occurrence of noise, wherein the magnetic circuit system 10 comprises a central magnetic steel 9 and a side magnetic steel 8, the central magnetic steel 9 is fixed in the middle of the chassis 11, the side magnetic steels 8 are respectively fixed on the four sides of the chassis 11, the centering support 3 is arranged above the basin frame 5, the centering support 3 is propped against the upper side of the basin frame 5, the clamping grooves 31 are arranged on the two sides of the centering support 3, the clamping grooves 31 are sleeved with the clamping blocks 7, the sound film 2 is arranged below the centering support 3, the sound film 2 is fixedly connected with the lower side of the centering support 3, the sound film is arranged right above the centering support, and the sound, the surface of the sound film is provided with a mesh cloth, and the mesh cloth is adhered to the surface of the sound film.

The utility model discloses a theory of operation: when the voice coil 4 vibrates up and down, the centering support 3 also vibrates along with the voice coil, and the lead of the voice coil 4 is connected with the conductive layer of the centering support 3 and is electrically connected with the electric connection terminal arranged on the basin frame 5 through the conductive layer, so that the voice coil 4 is electrically connected with an external power supply; simultaneously in the vibration of voice coil 4, because centering

disk

3 and 4 lead wires of voice coil loudspeaker voice coil are in synchronous vibration, can avoid producing the condition of dragging between 4 lead wires of voice coil loudspeaker voice coil and basin frame 5, set up screen cloth 1 in 2 tops of sound membrane, produce the difference in height through the root of sound membrane 2 and centering disk 3 to the root of centering disk 3 produces the noise with the collision of sound membrane 2 when preventing vibration system upwards to vibrate.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A micro-speaker comprising a chassis (11), characterized in that: be equipped with magnetic circuit (10) directly over chassis (11), and be fixed connection directly over magnetic circuit (10) and chassis (11), be equipped with basin frame (5) directly over chassis (11), and basin frame (5) are fixed through the gap between magnetic circuit (10), basin frame (5) top fixedly connected with fixture block (7), seted up in the middle of basin frame (5) and held chamber (6), be equipped with voice coil loudspeaker voice coil (4) directly over basin frame (5), and voice coil loudspeaker voice coil (4) are located and hold chamber (6).

2. A micro-speaker as claimed in claim 1, wherein: the magnetic circuit system (10) comprises central magnetic steel (9) and edge magnetic steel (8), the central magnetic steel (9) is fixed in the middle of the chassis (11), and the edge magnetic steel (8) is respectively fixed on four sides of the chassis (11).

3. A micro-speaker as claimed in claim 1, wherein: the basin stand is characterized in that a centering support piece (3) is arranged above the basin stand (5), the centering support piece (3) is abutted against the upper side of the basin stand (5), clamping grooves (31) are formed in two sides of the centering support piece (3), and the clamping grooves (31) are sleeved with clamping blocks (7).

4. A micro-speaker as claimed in claim 3, wherein: the voice coil is arranged below the centering support piece (3), and the voice coil (4) is fixedly connected with the lower portion of the centering support piece (3).

5. The micro-speaker as claimed in claim 4, wherein: be equipped with sound membrane (2) directly over centering disk (3), and sound membrane (2) offset with centering disk (3), sound membrane (2) surface is equipped with screen cloth (1), and screen cloth (1) and sound membrane (2) surface adhesion.

6. The micro-speaker as claimed in claim 5, wherein: the surface of the mesh cloth (1) is provided with sound transmission holes (12).