CN209897261U

CN209897261U - Sound monomer

Info

Publication number: CN209897261U
Application number: CN201920544148.XU
Authority: CN
Inventors: 胡洪建; 宋小军
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-01-03
Anticipated expiration: 2029-04-19

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 includes the lower plate and pastes 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 the vibrating diaphragm vibration, sound production monomer still includes the flexible circuit board who is connected with the voice coil loudspeaker voice coil, flexible circuit board sets up between basin frame and lower plate, it is equipped with elastic support piece to press from both sides between flexible circuit board and the lower plate. The utility model discloses technical scheme has not only avoided the yielding problem of free lower plate atress of sound production to take place effectively, can also conveniently adjust the free leakage quantity size of sound production to the free wholeness ability of sound production has been improved.

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. In the voice coil loudspeaker voice coil motion process, can vibrate the lower plate direction, because after the vibration that the lower plate among the traditional sound production monomer received reached certain amplitude, the easy atress was too big to lead to warping, the not good adjustment of the leakage quantity of sound production monomer self moreover.

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 an it is yielding, can adjust the novel sound production monomer of leakage quantity size to have avoided the free lower plate atress of sound production.

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 includes the lower plate and pastes and locate 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 lower plate, flexible circuit board with press from both sides between the lower plate and be equipped with elastic support piece.

In one embodiment, the number of the elastic support and the second magnet portion is two, and the elastic support and the second magnet portion are alternately arranged outside the first magnet portion.

In one embodiment, the elastic support and the second magnet part are arranged two by two at intervals.

In one embodiment, the resilient support comprises foam.

In one embodiment, the sounding unit further comprises an adhesive layer, and the elastic supporting member is adhered between the flexible circuit board and the lower clamping plate through the adhesive layer.

In one embodiment, the adhesive layer comprises double sided tape.

In one embodiment, the elastic supporting part is in an elongated shape, the elastic supporting part is arranged close to the edge position of the lower clamping plate, and the length direction of the elastic supporting part extends along the edge position direction of the lower clamping plate.

In one embodiment, the first magnet portion 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 lower clamping plate, and the second magnet portion 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 lower clamping plate, wherein the magnetic gap is formed between the main magnetic steel and the auxiliary magnetic steel.

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

In one of them embodiment, 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, vice utmost point core inlays to be located in the mounting groove, the supporting part is kept away from one side of installation department with the lower plate butt.

The beneficial effects of the utility model reside in that: through being provided with elastic support piece between flexible circuit board and lower plate, at the in-process of atress, elastic support piece plays the effect of support and buffering to the lower plate, makes the lower plate be difficult to warp, and the accessible sets up the elastic support piece of unidimensional not simultaneously and changes the free size of leaking of sound production. Therefore, the problem that the lower clamping plate of the sounding monomer is easy to deform under stress is effectively solved, the leakage amount of the sounding monomer can be conveniently adjusted, and 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 sounding unit of 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. Fig. 1 to 3 show the structure of the sound generating unit 10, in which the sound generating 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 lower plate 210, and a first magnet portion 220 and a second magnet portion 230 attached to the lower plate 210, 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. Here, the lower plate 210 is not limited to a flat plate-like structure, and may be referred to as a lower plate 210 as long as it has a bottom plate on which a magnet portion is placed. 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 210 may be integrally disposed, and at this time, the lower clamp plate 210 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 plate 210 may be integrally disposed, and at this time, the lower plate 210 has a T-shaped structure, and when both the first magnet portion 220 and the second magnet portion 230 are permanent magnets, the lower plate 210 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 lower plate 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 lower plate 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 voice coil 320 is preferably of a frame structure, in this embodiment, the frame structure has a non-rectangular cross section, the main magnet 221 is preferably of a rectangular parallelepiped structure, and the voice coil 320 is sleeved outside the main magnet 221 and located in 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 lower clamp plate 210 are made of magnetic conductive material such as carbon steel.

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, thereby generating sound. Meanwhile, the air flow generated in the process of vibrating the diaphragm 310 flows out of the outside through the gap between the frame 100 and the lower clamp plate 210, so that leakage is formed, and the balance of sound pressure is facilitated.

The flexible circuit board 400 is disposed between the basin stand 100 and the lower plate 210, and the elastic supporting member 500 is interposed between the flexible circuit board 400 and the lower plate 210. Because the elastic supporting member 500 has elasticity, in the process of the lower clamping plate 210 vibrating and bearing force, the elastic supporting member 500 not only plays a role in supporting the lower clamping plate 210, but also plays a role in buffering, so that the lower clamping plate 210 is not easy to deform after bearing force; in addition, the elastic supporting member 500 also has a certain blocking effect on the airflow flowing outwards inside the sounding unit 10, so that the size of the gap between the basin stand 100 and the lower clamp plate 210 can be changed by arranging the elastic supporting members 500 with different sizes, and the purpose of changing the leakage amount of the sounding unit 10 is achieved. Therefore, the problem that the lower clamping plate 210 of the sounding single body 10 is easy to deform under stress is effectively avoided, the leakage amount of the sounding single body 10 can be conveniently adjusted, and the overall performance of the sounding single body 10 is improved.

The specific structure of the elastic support 500 is not particularly limited. Preferably, the elastic supporting member 500 comprises foam, and since the foam has the advantages of light weight, convenient use, excellent compression deformation resistance, sound insulation and the like, in the using process, the elastic supporting member not only plays a good role in buffering the stress of the lower clamping plate 210, but also is beneficial to adjusting the leakage amount of the sounding unit 10. Of course, other structures having buffering and sound insulation functions may be used in addition to the foam as the elastic support member 500.

Referring to fig. 3, in the present embodiment, the number of the elastic supporting members 500 and the number of the second magnet portions 230 are two, and the elastic supporting members 500 and the second magnet portions 230 are alternately disposed outside the first magnet portions 220. Therefore, the elastic support member 500 can be arranged at the spatial position between different second magnet parts 230 reasonably, and the periphery of the lower clamp plate 210 can be supported by the elastic support member 500 and the second magnet parts 230 simultaneously, so that the stress is balanced, the lower clamp plate 210 cannot deform easily, and the using effect of the elastic support member 500 is ensured.

Further, referring to fig. 3, the elastic supporting member 500 and the second magnet portion 230 are disposed at an interval in pairs, so that a certain gap is reserved between the elastic supporting member 500 and the second magnet portion 230, and thus, the airflow in the vibration process can smoothly flow out of the gap, thereby ensuring the sound production effect of the sound production unit 10.

Referring to fig. 3, in the present embodiment, the sounding unit 10 further includes an adhesive layer 600, and the elastic supporting member 500 is adhered between the flexible circuit board 400 and the lower plate 210 through the adhesive layer 600. Specifically, when the elastic support member 500 is actually assembled, the elastic support member 500 may be conveniently fixed between the flexible circuit board 400 and the lower plate 210 using the adhesive layer 600. Meanwhile, when the elastic supporting member 500 needs to be repaired or replaced later, the elastic supporting member 500 can be detached only by removing the adhesive layer 600. By the arrangement, the elastic supporting piece 500 is convenient to mount, the whole manufacturing cost of the sounding unit 10 is reduced, and the economic benefit is improved.

The specific structure of the adhesive layer 600 is not limited, for example, the adhesive layer 600 may be a double-sided tape, and the adhesive layer 600 may also be other structures having a bonding function.

Referring to fig. 3, in the present embodiment, the elastic supporting member 500 has an elongated shape, which is beneficial to increase the contact area with the frame 100 and the lower plate 210, respectively, so as to further reduce the frequency of the vibration on the lower plate 210. The elastic supporting member 500 is disposed near the edge of the lower plate 210, and the length direction of the elastic supporting member 500 extends along the edge of the lower plate 210, so that the elastic supporting member 500 can support the lower plate 210 more stably, and the buffering effect is better.

Referring to fig. 3, in the present embodiment, the frame 100 includes a mounting portion 110 and a supporting portion 120 connected to the mounting portion 110, the mounting portion 110 is a frame-shaped structure, a mounting groove 111 is formed in an inner side of the mounting portion 110, the auxiliary pole core 232 is embedded in the mounting groove 111, and a side of the supporting portion 120 away from the mounting portion 110 abuts against the lower clamp plate 210. The installation and fixation of the auxiliary pole core 232 on the basin stand 100 are facilitated through the installation groove 111.

Referring to fig. 2 and fig. 3, in the present embodiment, the vibration system 300 further includes a dome 330, and the dome 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.

Referring to fig. 2, in the present 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 basin 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 utility model discloses still provide a speaker (not shown), this speaker includes casing (not shown) and accepts in the sound production monomer of casing, and the free concrete structure of sound production refers to above-mentioned embodiment, because this speaker has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer repeated here one by one.

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 includes the lower plate and pastes and locate 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 lower plate, its characterized in that, flexible circuit board with press from both sides between the lower plate and be equipped with elastic support piece.

2. The sounding unit according to claim 1, wherein the number of the elastic supporting members and the number of the second magnet portions are two, and the elastic supporting members and the second magnet portions are alternately disposed outside the first magnet portions.

3. The sound generating unit according to claim 2, wherein the elastic supporting member and the second magnetic member are disposed at a distance from each other.

4. The sound generating unit of claim 1, wherein the resilient support comprises foam.

5. The sound generating unit according to claim 1, further comprising an adhesive layer, wherein the elastic supporting member is adhered between the flexible circuit board and the lower plate through the adhesive layer.

6. The sound generating unit of claim 5, wherein the adhesive layer comprises double sided tape.

7. The sounding unit according to any one of claims 1 to 6, wherein the elastic support member is elongated, the elastic support member is disposed near an edge position of the lower plate, and a length direction of the elastic support member extends in a direction of the edge position of the lower plate.

8. 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 lower plate, 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 lower plate, and the main magnetic steel and the auxiliary magnetic steel form the magnetic gap therebetween.

9. The sound-generating unit according to claim 8, wherein the secondary pole piece is of a frame-shaped structure and is embedded in the frame.

10. The sounding monomer of claim 9, 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 against the lower clamping plate.