CN210016626U

CN210016626U - Sound producing device

Info

Publication number: CN210016626U
Application number: CN201920744651.XU
Authority: CN
Inventors: 顾小江
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-02-04
Anticipated expiration: 2029-05-22

Abstract

The utility model provides a sound generating device, its including the basin frame that has accommodating space with accept magnetic circuit and the vibration system in accommodating space, vibration system is including the vibrating diaphragm that is fixed in the basin frame and the voice coil loudspeaker voice coil that is fixed in vibrating diaphragm one side, the voice coil loudspeaker voice coil extends towards the magnetic circuit direction from the vibrating diaphragm, magnetic circuit is including fixing the lower plate of keeping away from vibrating diaphragm one side at the basin frame, and support fixed magnet steel assembly by the lower plate, magnet steel assembly drive voice coil loudspeaker voice coil vibration, the lower plate includes the first backup pad with the magnet steel assembly laminating and pastes and be connected the second backup pad of fixing in order to bear first backup pad with first backup pad, the second backup pad includes the main part that corresponds with first backup pad, and from the outside edge part that extends in main part edge. Use the technical scheme of the utility model the lower plate that sound generating mechanism adopted can solve among the correlation technique is too much to occupy the inside lower space of basin frame and has influenced the problem of sound production audio quality.

Description

Sound producing device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustics equipment technical field especially relates to a sound generating mechanism.

[ background of the invention ]

Currently, electronic terminals have better audio performance, and the beautiful tone quality effect completely depends on the excellent performance of the sound generating device. With the development of the related art and the requirement of people for portability of electronic terminals, the electronic terminals have smaller and thinner sizes and thicknesses, and accordingly, the adopted sound generating devices are also required to be thinner and thinner. In the correlation technique, sound generating mechanism's basin frame then has decided sound generating mechanism's volume and thickness basically with the lower plate assembly back, and the lower plate that current sound generating mechanism adopted all adopts the mode of pressing the exhibition to press thin the processing, and it is preferred to press thin the degree of depth, and the lower plate thickness that leads to making out is thicker, then must sacrifice the inner space of basin frame on satisfying the requirement basis that thickness is thin, especially with the closely relevant lower space of lower plate to sound generating mechanism's audio quality has finally been influenced.

Therefore, it is necessary to provide a lower plate having a small thickness and facilitating an increase in the lower space for assembling the sound generating device.

[ Utility model ] content

An object of the utility model is to provide a sound generating mechanism to solve among the correlation technique lower plate that sound generating mechanism adopted and too much occupy the inside lower space of basin frame and influenced the problem of the audio quality of sounding.

The technical scheme of the utility model as follows:

the utility model provides a sound generating mechanism, its basin frame including having accommodating space and accommodate magnetic circuit and the vibration system in accommodating space, vibration system is including the vibrating diaphragm that is fixed in the basin frame and the voice coil loudspeaker voice coil that is fixed in vibrating diaphragm one side, the voice coil loudspeaker voice coil extends towards the magnetic circuit direction from the vibrating diaphragm, magnetic circuit is including fixing the lower plate of keeping away from vibrating diaphragm one side at the basin frame, and support fixed magnetic steel assembly by the lower plate, magnetic steel assembly drives the voice coil loudspeaker voice coil vibration, the lower plate includes the first backup pad with the magnetic steel assembly laminating and with first backup pad laminating and with the basin frame be connected the second backup pad of fixing in order to bear first backup pad, the second backup pad includes the main part that corresponds with first backup pad, and the edge part of outside extension from main part edge.

Furthermore, the vibration system further comprises a centering support sheet fixed at one end, far away from the vibrating diaphragm, of the voice coil, one side, far away from the voice coil, of the centering support sheet is fixed with the basin frame, and the edge portion of the centering support sheet corresponds to the centering support sheet and is mutually spaced to form a vibration space of the centering support sheet.

Further, one side of basin frame of keeping away from the voice coil loudspeaker voice coil extends towards the lower plate and forms a plurality of stabilizer blade, and first backup pad is equipped with the location extension foot with a plurality of stabilizer blade one-to-one, and a plurality of stabilizer blade is around establishing at first backup pad periphery and butt location extension foot.

Further, the magnet steel assembly comprises a main magnet fixed on a first supporting plate and auxiliary magnets located on two opposite sides of the main magnet, a magnetic gap is formed between the main magnet and the auxiliary magnets at intervals, one side of the voice coil, far away from the vibrating diaphragm, extends to the magnetic gap, the auxiliary magnets are clamped between the basin frame and the first supporting plate, and the first supporting plate corresponds to the voice coil and is formed with an avoiding groove in a sunken mode.

Furthermore, the voice coil is in a track shape, the voice coil is provided with two opposite long shaft sides and two opposite short shaft sides, the auxiliary magnet is located on the long shaft side, and the centering support piece is located on the short shaft side.

Furthermore, one side of the basin frame, which is abutted against the auxiliary magnet, extends towards the direction away from the voice coil to form a support leg, the auxiliary magnet is arranged between two adjacent support legs positioned on the same side, and the positioning extension leg is positioned on one side of the support leg, which is close to the centering support piece.

Further, the magnetic steel assembly further comprises a magnetic conductive plate attached to one side, far away from the first supporting plate, of the main magnet and an upper clamping plate fixed to one side, far away from the first supporting plate, of the auxiliary magnet, and the upper clamping plate and the basin frame are integrally formed in an injection molding mode.

Furthermore, the centering support piece comprises a flexible circuit board, one end of the flexible circuit board is connected to the voice coil, the other end of the flexible circuit board is connected to the basin frame, and the voice coil is electrically connected with the flexible circuit board.

Furthermore, the centering disk also comprises a sound film clamped between the voice coil and the flexible circuit board.

Furthermore, the sound generating device also comprises supporting blocks which correspond to the centering support pieces respectively and are arranged between the centering support pieces and the second supporting plate, and one side, far away from the voice coil, of each centering support piece is clamped by the basin frame and the corresponding supporting block.

The beneficial effects of the utility model reside in that:

adopt the utility model provides a sound generating mechanism that lower plate assembled then this just uses two plate thickness thinner to carry out the complex lower plate that forms, and the structure of two backup pads is simple relatively, and the lower plate stability that lower plate and complex formed is made in the easy production is good, is favorable to guaranteeing the part volume production stability of lower plate to successfully liberating out the inside lower space of bigger basin frame on the basis that does not increase the whole volume of sound generating mechanism, make sound generating mechanism's audio quality obtain effectively promoting.

[ description of the drawings ]

Fig. 1 is an exploded view of the sound generating device of the present invention;

fig. 2 is an assembly view of the sound generating device of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a sectional view taken along the direction C-C in fig. 2.

[ detailed description ] embodiments

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

As shown in fig. 1, the present invention provides a sound generating device. The sound generating device comprises a basin frame 11 with an accommodating space, a magnetic circuit system 30 and a vibration system 40 which are accommodated in the accommodating space, wherein the vibration system 40 comprises a vibrating diaphragm 41 fixed on the basin frame 11 and a voice coil 42 fixed on one side of the vibrating diaphragm 41, wherein the vibrating diaphragm 41 comprises the dome 44 and the edge portion 440 that connects around the dome 44 laminating, voice coil 42 extends towards magnetic circuit 30 direction from vibrating diaphragm 41, magnetic circuit 30 is including fixing the lower plate 20 of keeping away from vibrating diaphragm 41 one side at basin frame 11, and support fixed magnetic steel component 310 by lower plate 20, magnetic steel component 310 drives the vibration of voice coil 42, lower plate 20 includes the first backup pad 21 of laminating with magnetic steel component 310 and pastes with first backup pad 21 and is connected fixedly in order to bear the second backup pad 22 of first backup pad 21 with basin frame 11, second backup pad 22 includes the main part 221 that corresponds with first backup pad 21, and from the outside edge portion 222 that extends in main part 221 edge.

The utility model provides a sound generating mechanism bonds fixed complex lower plate 20 that forms through first backup pad 21 and second backup pad 22, and the design structure mode that two backup pads bonded makes lower plate 20 no longer need be suppressed thinly, and the structure of two backup pads is simple relatively, and easy production makes lower plate 20 and complex lower plate 20 that forms good stability, is favorable to guaranteeing lower plate 20's part volume production stability, the utility model discloses a lower plate 20 that sound generating mechanism adopted compares in the lower plate that uses on the current market, because adopt the mode production of suppressing thinly to make the lower plate among the correlation technique, and it is limited to suppress the thin degree of depth, just also has leaded to adopt the lower space of basin frame inside among the sound generating mechanism of the lower plate assembly on the current market less, and adopts the utility model provides a sound generating mechanism that lower plate 20 assembled then uses two plate thickness thinness plates to carry out complex lower plate 20 that forms (behind the complex shaping than any that adopts in the prior art What lower clamping plate thickness all will be thin) to successfully liberate the lower space of bigger basin frame 11 inside on the basis that does not increase the whole volume of sound generating mechanism, make sound generating mechanism's audio quality effectively promoted.

In the present embodiment, the vibration system 40 further includes a damper 13 fixed to an end of the voice coil 42 away from the diaphragm 41, a side of the damper 13 away from the voice coil 42 is fixed to the frame 11, and the edge portion 222 of the second support plate 22 corresponds to the damper 13 and is spaced apart from the damper 13 to form the vibration space 100 of the damper 13.

Referring to fig. 1 to 5, one side of the frame 11 away from the voice coil 42 extends toward the lower clamping plate 20 to form a plurality of support legs 111, the first support plate 21 is provided with positioning extension legs 211 corresponding to the plurality of support legs 111 one by one, and the plurality of support legs 111 are wound around the periphery of the first support plate 21 and abut against the positioning extension legs 211. After the first support plate 21 and the second support plate 22 are bonded and compounded, when the lower clamp plate 20 is assembled with the basin frame 11, the lower clamp plate 20 and the basin frame 11 can be quickly positioned and assembled only by positioning the support legs 111 and the extension legs 211 in a one-to-one correspondence manner. Specifically, in the present embodiment, the frame 11 has a rectangular shape having two opposite short-axis sides 112 and two opposite long-axis sides 113, one leg 111 is disposed on each of the long-axis sides 113 at a position close to the short-axis sides 112 (i.e., at positions at both ends of each long-axis side 113), and two positioning extension legs 211 extend from the corresponding legs 111 on both sides of the first support plate 21 corresponding to the short-axis sides 112 along an extending direction parallel to the long-axis sides 113, that is: the side of the frame 11 abutting the secondary magnet 32 extends away from the voice coil 42 to form a leg 111, the secondary magnet 32 is disposed between two adjacent legs 111 on the same side, and the positioning extension leg 211 is located on the side of the leg 111 close to the centering branch 13.

In this embodiment, as shown in fig. 1 and fig. 5, the magnetic steel assembly 310 includes a main magnet 31 fixed on the first support plate 21, and auxiliary magnets 32 located on two opposite sides of the main magnet 31, the main magnet 31 and the auxiliary magnets 32 form a magnetic gap 200 at an interval, one side of the voice coil 42 away from the diaphragm 41 extends to the magnetic gap 200, the vibration system 40 vibrates up and down in the magnetic gap 200 to realize vibration and sound production in the vibration and sound production process, the auxiliary magnets 32 are sandwiched between the basin frame 11 and the first support plate 21, and the first support plate 21 is recessed to form an avoiding groove (not shown) corresponding to the voice coil 42. The two sub-magnets 32 are respectively corresponding to the two long-axis sides 113 and are clamped between the basin frame 11 and the first support plate 21, each sub-magnet 32 is located between the two legs 111 of the corresponding long-axis side 113, the centering disk 13 is located on the short-axis side 112, and the voice coil 442 of the present embodiment is in a racetrack shape. Further, the magnetic steel assembly 310 further includes a magnetic conductive plate 33 attached to the side of the main magnet 31 far away from the first support plate 21, and the overall magnetic conductive capability of the magnetic circuit system 30 can be enhanced by the magnetic conductive plate 33 arranged on the top of the main magnet 31; the magnetic steel assembly 310 further includes an upper clamp plate 12 fixed on a side of the auxiliary magnet 32 away from the first support plate 21, wherein the upper clamp plate 12 and the frame 11 are integrally formed by injection molding.

The lower space of the sound generating device is the space between the sound film 43 and the lower clamping plate 20 (i.e. the vibration space 100), and in the sound generating process, the increased lower space can reduce the influence of air pressure distribution caused by air vibration in the lower space driven by the sound film 43 on the low frequency of the tone quality, and improve the tone quality effect of the bass sound.

In this embodiment, the vibration system 40 includes two flexible circuit boards 430 corresponding to the two sound films 43, and in fact, the sound films 43 and the flexible circuit boards 430 are stacked to form the damper 13, wherein one end of the flexible circuit board 430 is connected to the voice coil 42, the other end is connected to the frame 11, and the damper 13 supports the bottom end of the voice coil 42. In addition, two supporting blocks 14 are respectively arranged corresponding to the two centering branch pieces 13, the two supporting blocks 14 are arranged between the centering branch pieces 13 and the second supporting plate 22, and one side of the centering branch piece 13 far away from the voice coil 42 is clamped by the basin stand 11 and the corresponding supporting block 14. The technical scheme of the utility model in, basin frame 11 adopts plastic material injection moulding more to inlay the completion with punch holder 12 in basin frame 11 at the in-process of moulding plastics. One side of the centering support piece 13 is clamped by the basin frame 11 and the corresponding support block 14 together. The support block 14 is preferably a gas permeable spacer for balancing the sound pressure between the inside and the outside of the sound generating device.

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 generating mechanism, its including the basin frame that has accommodating space with accept in magnetic circuit and vibration system in the accommodating space, vibration system is including being fixed in the vibrating diaphragm of basin frame with be fixed in the voice coil loudspeaker voice coil of vibrating diaphragm one side, the voice coil loudspeaker voice coil certainly the vibrating diaphragm court the magnetic circuit direction extends its characterized in that: magnetic circuit is including fixing keeping away from of basin frame the lower plate of vibrating diaphragm one side and by the lower plate supports fixed magnetic steel assembly, the magnetic steel assembly drive the voice coil loudspeaker voice coil vibration, the lower plate include with the first backup pad of magnetic steel assembly laminating and with first backup pad laminating and with the basin frame is connected fixedly in order to bear the second backup pad of first backup pad, the second backup pad include with the main part that first backup pad corresponds and certainly the marginal part that the main part edge outwards extended.

2. The sound generating apparatus of claim 1, wherein: the vibration system is characterized in that the vibration system further comprises a centering support sheet fixed at one end of the vibration diaphragm, which is far away from the voice coil, one side of the centering support sheet, which is far away from the voice coil, is fixed with the basin frame, and the edge part of the centering support sheet corresponds to the centering support sheet and is formed at intervals.

3. The sound generating apparatus of claim 2, wherein: keep away from of basin frame one side orientation of voice coil loudspeaker voice coil the lower plate extends and forms a plurality of stabilizer blade, first backup pad be equipped with a plurality of the foot is extended in the location of stabilizer blade one-to-one, a plurality of the stabilizer blade is around establishing first backup pad periphery and butt the foot is extended in the location.

4. The sound generating apparatus of claim 3, wherein: magnet steel assembly is including fixing the main magnet of first backup pad and being located the auxiliary magnet of the relative both sides of main magnet, the main magnet with the auxiliary magnet interval forms the magnetic gap, the voice coil loudspeaker voice coil is kept away from one side of vibrating diaphragm extends to the magnetic gap, the auxiliary magnet presss from both sides and locates the basin frame with between the first backup pad, first backup pad corresponds the voice coil loudspeaker voice coil sunken being formed with and dodges the groove.

5. The sound generating apparatus of claim 4, wherein: the voice coil is runway type, the voice coil has two relative major axis sides and two relative minor axis sides, vice magnet is located major axis side, the centering branch piece is located minor axis side.

6. The sound generating apparatus of claim 5, wherein: the basin frame butt one side of vice magnet is towards keeping away from the direction of voice coil loudspeaker voice coil extends and forms the stabilizer blade, vice magnet sets up and is being located two adjacent with one side between the stabilizer blade, the location extends the foot and is located the stabilizer blade is close to one side of centering branch piece.

7. The sound generating apparatus of claim 6, wherein: magnet steel assembly is still including the laminating main magnet keep away from the magnetic conduction board of first backup pad one side and fix vice magnet is kept away from the punch holder of first backup pad one side, the punch holder with basin frame injection moulding is as an organic whole.

8. The sound generating apparatus of claim 2, wherein: the centering support piece comprises a flexible circuit board, one end of the flexible circuit board is connected with the voice coil, the other end of the flexible circuit board is connected with the basin frame, and the voice coil is electrically connected with the flexible circuit board.

9. The sound generating apparatus of claim 8, wherein: the centering support piece further comprises a sound film clamped between the voice coil and the flexible circuit board.

10. The sound generating apparatus of claim 7, wherein: the sound generating device further comprises supporting blocks which correspond to the centering support pieces respectively and are arranged between the centering support pieces and the second supporting plate, and one side, far away from the voice coil, of each centering support piece is clamped by the basin frame and the corresponding supporting block.