CN210016630U

CN210016630U - Sound monomer

Info

Publication number: CN210016630U
Application number: CN201920786033.1U
Authority: CN
Inventors: 胡洪建; 宋小军
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-02-04
Anticipated expiration: 2029-05-28

Abstract

The utility model provides a sound production monomer, wherein, sound production monomer is including the basin frame that has accommodating space, accept in the magnetic circuit and the vibration system of basin frame, magnetic circuit is including the magnetic frame that has the lower plate and paste first magnet portion and the second magnet portion of locating on the lower plate, second magnet portion sets up in the both sides of first magnet portion and forms the magnetic gap with first magnet portion, vibration system is including setting firmly vibrating diaphragm on the basin frame and inserting the voice coil loudspeaker voice coil that the magnetic gap and drive vibrating diaphragm vibrate, sound production monomer still includes the flexible circuit board who is connected with the voice coil loudspeaker voice coil, the flexible circuit board sets up between basin frame and magnetic frame, the lower plate extends along the flexible circuit board direction and forms straight flange and turning flange. The utility model discloses technical scheme has not only avoided the too big problem of sound production monomer amplitude effectively, can also adjust the free leakage quantity size of sound production to improve the free wholeness ability of sound production.

Description

Sound monomer

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion technical field, in particular to sound production monomer.

[ 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. At present, the functions of a mobile phone are very diverse, one of them is a high-quality music function, and a sound generating unit in the mobile phone is one of the necessary conditions for realizing the high-quality music function.

The sounding monomer of the related art comprises a magnetic circuit system, a vibration system and a basin frame for accommodating the magnetic circuit system and the vibration system. The voice coil moves after being electrified and drives the vibrating diaphragm to vibrate, and air in the rear cavity (space below or behind the vibrating diaphragm) can be compressed or expanded to make a sound. The leakage at the corners of the sounding units is large, and the amplitude of the product is large.

Therefore, there is a need to provide a new sounding unit to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a can adjust the free leakage quantity size of sound production, avoid the too big novel sound production monomer of product amplitude.

The technical scheme of the utility model as follows:

the utility model provides a sound production monomer, including the basin frame that has accommodating space, accept in the magnetic circuit and the vibration system of basin frame, magnetic circuit locates including the magnetic frame that has the lower plate and subsides first magnet portion and second magnet portion on the lower plate, second magnet portion set up in the both sides of first magnet portion and with first magnet portion forms the magnetic gap, vibration system including set firmly in vibrating diaphragm on the basin frame with insert magnetic gap and drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration, sound production monomer still include with the flexible circuit board that the voice coil loudspeaker voice coil is connected, flexible circuit board set up in the basin frame with between the magnetic frame, its characterized in that, the lower plate is followed flexible circuit board direction extends and forms straight flange and turning flange.

Preferably, the lower clamping plate, the corner flanging and the straight edge flanging are integrally formed.

Preferably, the magnetic frame comprises four corner flanges and two straight flange flanges, and the straight flange flanges and the second magnetic body part are arranged at intervals in pairs.

Preferably, the straight-side flange height is higher than the corner flange height.

Preferably, the corner flange is configured as a curved surface or a flat surface.

Preferably, the first magnetic part comprises a main magnetic steel and a main pole core attached to one side of the main magnetic steel, which is far away from the magnetic frame, the second magnetic part comprises an auxiliary magnetic steel and an auxiliary pole core stacked on one side of the auxiliary magnetic steel, which is far away from the magnetic frame, and the magnetic gap is formed between the main magnetic steel and the auxiliary magnetic steel.

Preferably, the auxiliary pole core is of a frame-shaped structure and is embedded in the basin frame.

Preferably, the basin frame include the installation department and with the supporting part that the installation department is connected, the installation department is the frame structure, the mounting groove has been seted up to the installation department inboard, the depole core inlays to be located in the mounting groove, the supporting part is kept away from one side of installation department with the magnetic frame butt.

The beneficial effects of the utility model reside in that: the magnetic frame comprises a lower clamping plate and the lower clamping plate extends along the direction of the flexible circuit board to form a straight edge flanging and a corner flanging, and in the sounding process, the straight edge flanging and the corner flanging can effectively avoid the problem that the amplitude of a sounding monomer is too large, and can also adjust the leakage amount of the sounding monomer, so that the overall performance of the sounding monomer is improved.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of an embodiment of the sound generating unit of the present invention;

FIG. 2 is a cross-sectional view A-A of the sound generating unit of FIG. 1;

FIG. 3 is an exploded view of the sound generating unit of FIG. 1;

fig. 4 is a schematic structural diagram of another view angle of the sounding unit in fig. 1.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

One embodiment provides a sound emitting cell 10. The sounding unit 10 is configured as shown in fig. 1 to 4, and the sounding unit 10 includes a frame 100 having a housing space, a magnetic circuit 200 housed in the frame 100, and a vibration system 300.

The magnetic circuit system 200 includes a magnetic frame 210 having a lower plate 213, and a first magnet portion 220 and a second magnet portion 230 attached to the lower plate 213, wherein the second magnet portion 230 is disposed on two sides of the first magnet portion 220 and forms a magnetic gap with the first magnet portion 220. While at least one of the first magnet portion 220 and the second magnet portion 230 is a permanent magnet, it can be understood that, only when the first magnet portion 220 is a permanent magnet, the second magnet portion 230 and the lower clamp plate 213 may be integrally disposed, and at this time, the lower clamp plate 213 is a magnetic bowl-shaped structure having a side wall; when only the second magnet portion 230 is a permanent magnet, the first magnet portion 220 and the lower clamp plate 213 may be integrally disposed, and the lower clamp plate 213 has a T-shaped structure, and when the first magnet portion 220 and the second magnet portion 230 are both permanent magnets, the lower clamp plate 213 has a flat plate-shaped structure, as shown in this embodiment. The first magnet portion 220 includes a main magnet 221 and a main pole core 222 attached to one side of the main magnet 221 away from the magnetic frame 210, the second magnet portion 230 includes two sub-magnets 231 and a sub-pole core 232 stacked on one side of the sub-magnet 231 away from the magnetic frame 210, the two sub-magnets 231 are respectively located on two opposite sides of the main magnet 221, and a magnetic gap is formed between the main magnet 221 and the sub-magnet 231. The auxiliary pole core 232 is a frame-shaped structure and is embedded in the basin stand 100.

The vibration system 300 includes a diaphragm 310 fixed on the frame 100, a voice coil 320 inserted into the magnetic gap and driving the diaphragm 310 to vibrate, and the sound generating unit 10 further includes a flexible circuit board 400 connected to the voice coil 320. When the voice coil 320 is energized by the flexible circuit board 400 to conduct current, the voice coil 320 in the magnetic gap moves due to the action of the magnetic field, and the movement changes along with the change of the current, so as to drive the diaphragm 310 to move up and down to generate sound. Meanwhile, the air flow generated during the vibration of the diaphragm 310 flows out of the outside through the gap between the frame 100 and the magnetic frame 210, thereby forming a leakage amount, which is beneficial to balance the sound pressure.

The voice coil 320 is preferably of a frame structure, the main magnet 221 is preferably of a rectangular parallelepiped structure, and the voice coil 320 is disposed outside the main magnet 221 and within the magnetic gap. The main magnetic steel 221 and the auxiliary magnetic steel 231 are made of permanent magnetic material, and the main pole core 222, the auxiliary pole core 232 and the magnetic frame 210 are made of magnetic conductive material such as carbon steel.

The flexible circuit board 400 is disposed between the tub 100 and the magnetic frame 210. The magnetic frame 210 includes a lower clamp plate 213, the lower clamp plate 213 extends toward the flexible circuit board 400 to form a straight flange 211 and a corner flange 212, and the straight flange 211 abuts against the flexible circuit board 400 to support the flexible circuit board 400. The lower clamping plate 213, the corner flange 212 and the straight flange 211 are integrally formed, so that the stability of the sounding unit can be improved. The magnetic frame 210 comprises four corner flanges 212 and two straight flanges 211, the straight flanges 211 and the second magnet part 230 are arranged at intervals, the corner flanges 212 can be set to be curved surfaces, and the curved surfaces have the advantage that the shapes, sizes and other structures of the corner flanges can be flexibly set; in other embodiments, the corner cuffs may be arranged to be planar. In addition, the straight flange 211 and the corner flange 212 also have a certain blocking effect on the air flow flowing outwards inside the sounding single body 10, the straight flange 211 is higher than the corner flange 212, and the size of the gap between the basin frame 100 and the lower clamp plate 213 can be changed by arranging the corner flanges 212 with different heights, so that the purpose of adjusting the leakage amount of the sounding single body 10 is achieved. Therefore, the problem that the amplitude of the sounding monomer is too large can be effectively solved, the leakage quantity of the sounding monomer 10 can be conveniently adjusted, and the overall performance of the sounding monomer 10 is improved.

In this embodiment, the frame 100 includes an installation portion 110 and a supporting portion 120 connected to the installation portion 110 and located on a side of the installation portion 110 close to the lower plate, the installation portion 110 is in a frame-shaped structure, an installation groove 111 is formed on an inner side of the installation portion 110, the auxiliary pole core 232 is embedded in the installation groove 111, and a side of the supporting portion 120 away from the installation portion 110 abuts against the magnetic frame 210. The installation and fixation of the auxiliary pole core 232 on the basin stand 100 are facilitated through the installation groove 111.

In this embodiment, the vibration system 300 further includes a ball top 330, and the ball top 330 is attached to a side of the diaphragm 310 away from the voice coil 320. The dome 330 improves the acoustic performance of the diaphragm 310 and improves the reliability of the sounding unit 10.

In this embodiment, the vibration system 300 further includes a sound film 340, the sound film 340 is attached to the flexible circuit board 400 and located between the voice coil 320 and the frame 100, and the sound film 340 protrudes away from the flexible circuit board 400 to avoid the flexible circuit board 400. The diaphragm 310 and the voice diaphragm 340 are respectively and fixedly connected to the top end and the bottom end of the voice coil 320, so as to vibrate along with the voice coil 320, thereby achieving the purpose of sound production.

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 sound production monomer, including the basin frame that has accommodating space, accept in the magnetic circuit and the vibration system of basin frame, magnetic circuit locates including the magnetic frame that has the lower plate and subsides first magnet portion and second magnet portion on the lower plate, second magnet portion set up in the both sides of first magnet portion and with first magnet portion forms the magnetic gap, vibration system including set firmly in vibrating diaphragm on the basin frame with insert magnetic gap and drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration, sound production monomer still include with the flexible circuit board that the voice coil loudspeaker voice coil is connected, flexible circuit board set up in the basin frame with between the magnetic frame, its characterized in that, the lower plate to flexible circuit board direction extends and forms straight flange and turning flange.

2. The sound generating unit as claimed in claim 1, wherein the lower plate, the corner flange and the straight flange are integrally formed.

3. The sound generating unit according to claim 1, wherein the magnetic frame includes four corner flanges and two straight flanges, and the straight flanges are spaced apart from the second magnetic portion.

4. The sound generating unit as claimed in claim 1, wherein the height of the straight edge flange is higher than the height of the corner flange.

5. The sound generating unit as claimed in claim 1, wherein the corner bead is configured as a curved surface.

6. The sounding unit according to claim 1, wherein the first magnetic portion comprises a main magnetic steel and a main pole core attached to a side of the main magnetic steel away from the magnetic frame, the second magnetic portion comprises an auxiliary magnetic steel and an auxiliary pole core stacked on a side of the auxiliary magnetic steel away from the magnetic frame, and the main magnetic steel and the auxiliary magnetic steel form the magnetic gap therebetween.

7. The sounding monomer according to claim 6, wherein the secondary pole piece is of a frame-shaped structure and is embedded in the basin stand.

8. The sounding monomer of claim 7, wherein the basin stand includes an installation portion and a supporting portion connected to the installation portion, the installation portion is in a frame-shaped structure, an installation groove is formed in the inner side of the installation portion, the auxiliary pole core is embedded in the installation groove, and the supporting portion is far away from one side of the installation portion and abutted to the magnetic frame.