CN112312247A - Sound production device - Google Patents
Sound production device Download PDFInfo
- Publication number
- CN112312247A CN112312247A CN202011381267.1A CN202011381267A CN112312247A CN 112312247 A CN112312247 A CN 112312247A CN 202011381267 A CN202011381267 A CN 202011381267A CN 112312247 A CN112312247 A CN 112312247A
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- fixed
- vibrating diaphragm
- welding
- basin frame
- extending
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000005452 bending Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 37
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention provides a sounding device. The sound production device comprises a basin frame, a vibration system fixed on the basin frame respectively, a magnetic circuit system with a magnetic gap and a front cover, the vibration system comprises a vibrating diaphragm and a voice coil inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound, the basin frame comprises an upper surface facing the front cover, a lower surface arranged opposite to the upper surface, an inner surface and an outer surface, wherein the upper surface is connected with the upper surface and the lower surface, the inner surface is closer to the voice coil relative to the outer surface, the front cover comprises a cover body and a flanging formed by bending and extending the outer periphery of the cover body to the lower surface, the vibrating diaphragm and the basin frame are integrally formed, the vibrating diaphragm is provided with a coating part which is clamped between the upper surface and the cover body, is formed by bending and extending the outer periphery of the cover body to the lower. The sounding device provided by the invention can achieve a higher waterproof grade.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a sounding device.
[ background of the invention ]
In order to adapt to the miniaturization and multi-function development of various acoustic equipment and information communication equipment, the sound production device used in the equipment is required to be correspondingly more miniaturized, so that the matching between the sound production device and other peripheral elements is more compact. Particularly, with the demand for the development of the lightness and thinness of the mobile phone, the quality of the sound-generating device used therein is more and more demanding.
In the related art, the sound production device comprises a basin frame, a vibration system fixed on the basin frame, a magnetic circuit system with a magnetic gap and a front cover, wherein the vibration system comprises a vibrating diaphragm arranged between the basin frame and the front cover in a clamping manner and a voice coil inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound, the front cover is fixedly arranged on one side of the vibrating diaphragm, which is far away from the basin frame (namely the vibrating diaphragm is arranged between the basin frame and the front cover) and forms a sound cavity in a surrounding manner with the vibrating diaphragm, and the front cover is provided with a sound outlet communicated with the sound cavity. However, the sound production device cannot achieve a higher waterproof level due to the limited bonding area between the diaphragm and the tub support and the front cover.
Therefore, there is a need to provide a new sound generation device to solve the above problems.
[ summary of the invention ]
The invention aims to provide a sounding device which can achieve a higher waterproof grade.
The invention provides a sounding device, which comprises a basin frame, a vibration system respectively fixed on the basin frame, a magnetic circuit system with a magnetic gap and a front cover, wherein the vibration system comprises a vibrating diaphragm and a voice coil inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and sound, the basin frame comprises an upper surface facing the front cover, a lower surface arranged opposite to the upper surface, and an inner surface and an outer surface connecting the upper surface and the lower surface, the inner surface is closer to the voice coil relative to the outer surface, the front cover comprises a cover body and a flanging formed by bending and extending from the outer periphery of the cover body to the lower surface, the vibrating diaphragm and the basin frame are integrally formed, the vibrating diaphragm is provided with an edge part clamped between the upper surface and the cover body and glued with the cover body, and a coating part formed by bending and extending from the outer periphery of the edge part to the lower surface and fixed on the outer surface, the flanging is glued and fixed on the coating part.
Preferably, the flanging and the cladding part are both of annular structures.
Preferably, the basin frame and the front cover are both made of metal materials, the front cover further comprises a welding portion formed by extending from one end, far away from the cover body, of the flanging, a window is formed in the coating portion, the window exposes the outer surface to form a welding area, and the welding portion is welded and fixed to the welding area.
Preferably, the welding portion is provided in plurality, and the plurality of welding portions are provided at intervals.
Preferably, the number of the welding parts is four, and the four welding parts are respectively positioned at the chamfer angles of the basin stand.
Preferably, the weld is welded to the weld zone by laser.
Preferably, the diaphragm further has a reinforcing portion extending from the edge portion toward the lower surface and fixed to the inner surface, and the reinforcing portion is disposed opposite to the welding portion at an interval.
Preferably, the sound production device further comprises an elastic support member arranged at an interval with the diaphragm, a skeleton is fixedly arranged on one side of the diaphragm facing the magnetic circuit system, the skeleton comprises a main body part fixed on the diaphragm and a first extension part and a second extension part which are respectively formed by extending from the main body part to the direction away from the diaphragm, the first extension part and the second extension part are arranged at an interval, wherein one end of the elastic support member is fixed on the basin stand, and the other end of the elastic support member is fixed on the first extension part; the voice coil is fixed to the second extension portion.
Preferably, elastic support element includes flexible circuit board and supplementary vibrating diaphragm, flexible circuit board including be fixed in the fixing portion of basin frame, be fixed in the fixed part of first extension and connection the fixing portion with the elastic arm of fixed part, supplementary vibrating diaphragm including set firmly in the fixing portion is kept away from the first part of basin frame one side, is fixed in the fixed part is kept away from the second part of first extension one side and connection the first part with the ring that rolls over of second part, roll over the ring and deviate from the direction arch of flexible circuit board.
Preferably, the magnetic circuit system comprises a lower clamp plate, a main magnet fixed on the lower clamp plate, an auxiliary magnet arranged at an interval with the main magnet to form the magnetic gap, a pole core covering the main magnet, and an upper clamp plate covering the auxiliary magnet.
Compared with the prior art, the sound production device provided by the invention has the advantages that the front cover comprises the cover body and the flanging which is formed by bending and extending from the outer periphery of the cover body to the lower surface direction, the vibrating diaphragm is integrally formed with the basin frame, the vibrating diaphragm is provided with the edge part which is clamped between the upper surface and the cover body and is glued with the cover body, the coating part which is formed by bending and extending from the outer periphery of the edge part to the lower surface direction and is fixed on the outer surface, and the flanging is glued and fixed on the coating part, so that the gluing area between the front cover and the vibrating diaphragm can be increased, the gluing strength between the front cover and the vibrating diaphragm can be improved, and higher waterproof.
[ description of the drawings ]
FIG. 1 is an exploded view of a sound device provided by the present invention;
FIG. 2 is a schematic structural view of a diaphragm body of the sound production device shown in FIG. 1;
FIG. 3 is a schematic view of the membrane body of FIG. 2 at another angle;
FIG. 4 is a schematic structural view of the skeleton of the sound device shown in FIG. 1;
FIG. 5 is a schematic view of a flexible circuit board of the sound production device shown in FIG. 1;
FIG. 6 is an assembled perspective view of the sound device of FIG. 1;
FIG. 7 is a cross-sectional view of the sound device of FIG. 6 taken along line A-A;
FIG. 8 is a cross-sectional view of the sound device of FIG. 6 taken along line B-B;
FIG. 9 is a cross-sectional view of the sound device of FIG. 6 taken along line C-C;
FIG. 10 is an enlarged view of portion a of the sound device of FIG. 6;
fig. 11 is a schematic structural view of the sound production device shown in fig. 1 after the diaphragm body and the basin frame are assembled.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 11, the sound production device includes a frame 1, a vibration system 3 respectively fixed to the frame 1, a magnetic circuit system 5 having a magnetic gap 5A, and a front cover 6, wherein the magnetic circuit system 5 is used for driving the vibration system 3 to vibrate and produce sound.
The frame 1 comprises an upper surface 11 facing the front cover 6, a lower surface 13 arranged opposite to the upper surface 11, and an inner surface 15 and an outer surface 17 connecting the upper surface 11 and the lower surface 13.
The vibration system 3 comprises a diaphragm 31 and a voice coil 33 inserted into the magnetic gap 5A to drive the diaphragm 31 to vibrate and sound, and the diaphragm 31 is clamped between the front cover 6 and the basin stand 1. Wherein, the inner surface 15 is closer to the voice coil 33 than the outer surface 17, the voice coil 33 is electrically connected to an external circuit, after the voice coil 33 is powered on, the voice coil 33 vibrates under the action of the magnetic field of the magnetic circuit system 5, and at the same time, the voice coil 33 drives the diaphragm 31 to vibrate and generate sound.
The vibrating diaphragm 31 and the front cover 6 enclose to form an acoustic cavity 10, and the front cover 6 is provided with a sound outlet 6A communicated with the acoustic cavity 10. Wherein, the sound generated by the vibration of the diaphragm 31 is transmitted through the sound cavity 10 and the sound outlet 6A.
The front cover 6 includes a cover body 61 and a flange 63 formed by bending and extending from the outer periphery of the cover body 61 toward the lower surface 13. Wherein the sound outlet 6A is located on the cover body 61.
The diaphragm 31 is integrally formed with the frame 1, so that the diaphragm 31 and the frame 1 can have higher concentricity.
The diaphragm 31 has an edge portion 31A sandwiched between the upper surface 11 and the cover body 61 and glued to the cover body 61, and a covering portion 31B bent and extended from an outer peripheral edge of the edge portion 31A toward the lower surface 13 and fixed to the outer surface 17, and the flange 63 is glued to the covering portion 31B.
In this embodiment, the flange 63 and the covering portion 31B are both annular structures.
In this embodiment, the frame 1 and the front cover 6 are both made of a metal material, the front cover 6 further includes a welding portion 65 formed by extending from one end of the flange 63 away from the cover body 61, the covering portion 31B is provided with a window 31C, the window 31C exposes the outer surface 17 to form a welding region 171, and the welding portion 65 is welded and fixed to the welding region 171.
In the present embodiment, the welding portion 65 and the welding portion 171 are fixed by laser welding.
The welding portion 65 is provided in plural (i.e., the welding portion 171 is also provided in plural), and the welding portions 65 are provided at intervals. As shown in fig. 6, four welding portions 65 are provided and are respectively located at the chamfers of the frame 1. Through will the welding part 65 is located the chamfer of basin frame 1 can avoid the welding to occupy the area that vibration system promoted gas to the acoustic performance that can avoid the sounder receives the influence.
It is understood that, in the embodiment, the number and the position of the welding portions 65 are not limited to this, and it is only necessary to ensure that the welding portions 65 can be welded and fixed with the frame 1 and have sufficient connection strength after being welded and fixed, for example, the welding portions 65 can also be located on the major axis side or/and the minor axis side of the frame 1.
In this embodiment, the diaphragm 31 further has a reinforcing portion 31D formed to extend from the edge portion 31A toward the lower surface 17 and fixed to the inner surface 15, and the reinforcing portion 31D is disposed opposite to and spaced apart from the welding portion 65.
In this embodiment, the sounding device further includes an elastic supporting member 7 spaced apart from the diaphragm 31, a skeleton 34 is fixedly disposed on a side of the diaphragm 31 facing the magnetic circuit system 5, the skeleton 34 includes a main body portion 341 fixed to the diaphragm 31 and a first extending portion 343 and a second extending portion 345 respectively extending from the main body portion 341 in a direction away from the diaphragm 31, and the first extending portion 343 and the second extending portion 345 are spaced apart from each other. Wherein, one end of the elastic supporting member 7 is fixed to the frame 1, and the other end thereof is fixed to the first extending portion 343; the voice coil 33 is fixed to the second extension 345. When the voice coil 33 vibrates, the framework 34 drives the diaphragm 31 and the elastic support 7 to vibrate together.
As shown in fig. 4, the main body portion 341 is a ring structure, the first extending portion 343 is formed by extending from an outer circumferential edge of the main body portion 341, and the second extending portion 345 is formed by extending from an inner circumferential edge of the main body portion 341. The main body portion 341 with a ring structure is beneficial to reduce the overall weight of the skeleton 34 to reduce the vibration mass of the sound generating device, thereby being beneficial to improve the sensitivity of the sound generating device.
In this embodiment, a plurality of slits 347 are formed in the second extension portion 345, and the plurality of slits 347 divide the second extension portion 345 into a plurality of isolated islands 345A. That is, the voice coil 33 is fixed to the plurality of isolation islands 345A of the second extension part 345. After the voice coil 33 is fixed to the second extension part 345 by arranging the plurality of gaps 347, an air flow channel is formed between the voice coil 33 and the second extension part 345, and the air flow channel can balance air pressure in the sounding device when the sounding device vibrates, so that the acoustic performance of the sounding device is improved.
As shown in fig. 1, the diaphragm 31 includes a film body 35 having a cut-out hole 351 and a dome 37 disposed in the cut-out hole 351, and the film body 35 and the dome 37 are respectively fixed to the main body portion 341 by gluing. The edge portion 31A, the covering portion 31B, and the reinforcing portion 31D are all partial structures of the film body 35.
The elastic support member 7 includes a flexible circuit board 71 and an auxiliary diaphragm 73.
The flexible circuit board 71 includes a holding portion 711 fixed to the frame 1, a fixing portion 713 fixed to the first extending portion 343, and an elastic arm 715 connecting the holding portion 711 and the fixing portion 713.
In this embodiment, one of the flexible circuit boards 71 further includes a pad portion 717 extending from the fixing portion 713 in a bending direction of the diaphragm, and the pad portion 717 is provided with a lead electrically connected to the voice coil 33. On one hand, the flexible circuit board 71 plays a role of supporting and fixing the vibration system 3, and on the other hand, the holding portion 711 and the pad portion 717 of the flexible circuit board 71 are both provided with a pad (not shown), and the elastic arm 715 and the fixing portion 713 are provided with a conductive path for electrically connecting the holding portion 711 and the pad portion 717, wherein the pad on the pad portion 717 and the lead wire connection of the voice coil 33 play a role of electrically connecting the voice coil 33, the pad on the holding portion 711 is connected with an external circuit, so that the voice coil 33 is electrically connected with the external circuit through the flexible circuit board 71, and when the sound generating device works, an electrical signal of the external circuit is transmitted to the voice coil 33 through the flexible circuit board 71.
It is understood that, in other embodiments, the flexible circuit board 71 may not include a pad portion, and accordingly, a pad electrically connected to the lead of the voice coil 33 is provided on the fixing portion.
The auxiliary diaphragm 73 includes a first portion 731 fixed to the side of the holding portion 711 away from the frame 1, a second portion 733 fixed to the side of the fixing portion 713 away from the first extending portion 343, and a folded ring 735 connecting the first portion 731 and the second portion 733, wherein the folded ring 735 is protruded in a direction away from the flexible circuit board 71. The auxiliary diaphragm 73 is arranged to improve the acoustic performance of the sound production device.
The magnetic circuit system 5 comprises a lower clamp plate 51 fixed on the basin stand 1, a main magnet 53 fixed on the lower clamp plate 51, an auxiliary magnet 55 arranged at an interval with the main magnet 53 to form the magnetic gap 5A, a pole core 57 covering the main magnet 53, and an upper clamp plate 59 covering the auxiliary magnet 55.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a sounder, includes the basin frame, is fixed in respectively the vibration system of basin frame and magnetic circuit and the protecgulum that have the magnetic gap, vibration system includes the vibrating diaphragm and inserts the magnetic gap is with the drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production, the basin frame includes the orientation the upper surface of protecgulum, with the lower surface and the connection that the upper surface set up relatively the upper surface with the internal surface and the surface of lower surface, the internal surface for the surface is closer to more the voice coil loudspeaker voice coil, its characterized in that: the front cover comprises a cover body and a flanging, wherein the flanging is formed by bending and extending the outer peripheral edge of the cover body towards the lower surface, the vibrating diaphragm and the basin frame are integrally formed, the vibrating diaphragm is provided with an edge part which is clamped between the upper surface and the cover body and glued with the cover body, and an outer peripheral edge part of the edge part is bent and extended towards the lower surface to form and fix the coating part of the outer surface, and the flanging is glued and fixed on the coating part.
2. The sound production device of claim 1, wherein: the flanging and the coating part are both of annular structures.
3. The sound production device of claim 1 or 2, wherein: the basin frame and the front cover are made of metal materials, the front cover further comprises a welding portion formed by extending from one end, far away from the cover body, of the flanging, a window is formed in the coating portion, the window enables the outer surface to be exposed to form a welding area, and the welding portion is welded and fixed to the welding area.
4. The sound production device of claim 3, wherein: the welding part is equipped with a plurality ofly, and is a plurality of the welding part interval sets up.
5. The sound production device of claim 3, wherein: the number of the welding parts is four, and the four welding parts are respectively positioned at the chamfer angles of the basin frame.
6. The sound production device of claim 3, wherein: the welding portion is laser welded to the welding zone.
7. The sound production device of claim 3, wherein: the diaphragm is further provided with a reinforcing part which is formed by extending from the edge part to the lower surface direction and is fixed on the inner surface, and the reinforcing part is opposite to the welding part and is arranged at intervals.
8. The sound production device of claim 1, wherein: the sounding device further comprises an elastic supporting piece arranged at an interval with the vibrating diaphragm, a framework is fixedly arranged on one side of the vibrating diaphragm, which faces the magnetic circuit system, the framework comprises a main body part fixed on the vibrating diaphragm, and a first extending part and a second extending part which are respectively formed by extending from the main body part to the direction away from the vibrating diaphragm, the first extending part and the second extending part are arranged at an interval, wherein one end of the elastic supporting piece is fixed on the basin frame, and the other end of the elastic supporting piece is fixed on the first extending part; the voice coil is fixed to the second extension portion.
9. The sound production device of claim 8, wherein: elastic support element includes flexible circuit board and supplementary vibrating diaphragm, flexible circuit board including being fixed in the fixing portion of basin frame, being fixed in the fixed part of first extension and connection the fixing portion with the elastic arm of fixed part, supplementary vibrating diaphragm including set firmly in the fixing portion is kept away from the first part of basin frame one side, is fixed in the fixed part is kept away from the second part of first extension one side and connection the first part with the ring that rolls over of second part, roll over the ring and deviate from the direction of flexible circuit board is protruding.
10. The sound production device of claim 1, wherein: the magnetic circuit system comprises a lower clamping plate, a main magnet fixedly arranged on the lower clamping plate, an auxiliary magnet arranged at an interval with the main magnet to form the magnetic gap, a pole core covered on the main magnet and an upper clamping plate covered on the auxiliary magnet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011381267.1A CN112312247A (en) | 2020-11-30 | 2020-11-30 | Sound production device |
| PCT/CN2020/140070 WO2022110458A1 (en) | 2020-11-30 | 2020-12-28 | Sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011381267.1A CN112312247A (en) | 2020-11-30 | 2020-11-30 | Sound production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112312247A true CN112312247A (en) | 2021-02-02 |
Family
ID=74487374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011381267.1A Pending CN112312247A (en) | 2020-11-30 | 2020-11-30 | Sound production device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112312247A (en) |
| WO (1) | WO2022110458A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024000676A1 (en) * | 2022-06-29 | 2024-01-04 | 瑞声光电科技(常州)有限公司 | Speaker box |
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| CN109348370A (en) * | 2018-09-30 | 2019-02-15 | 瑞声科技(新加坡)有限公司 | Microphone device |
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| CN211959522U (en) * | 2019-12-25 | 2020-11-17 | 瑞声科技(新加坡)有限公司 | Sound production device |
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| US20090046888A1 (en) * | 2007-08-14 | 2009-02-19 | Chi En Huang | Speaker |
| CN108449675A (en) * | 2018-04-23 | 2018-08-24 | 深圳市沃特沃德股份有限公司 | Intelligent sound box |
| CN210351606U (en) * | 2019-09-30 | 2020-04-17 | 连云港乐虎电子科技有限公司 | Novel positioning support loudspeaker voice coil structure |
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2020
- 2020-11-30 CN CN202011381267.1A patent/CN112312247A/en active Pending
- 2020-12-28 WO PCT/CN2020/140070 patent/WO2022110458A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783993A (en) * | 2009-11-30 | 2010-07-21 | 瑞声声学科技(深圳)有限公司 | Speaker and manufacturing method thereof |
| CN103067829A (en) * | 2012-12-25 | 2013-04-24 | 苏州恒听电子有限公司 | Vibrating diaphragm applied to medium-high frequency sound production unit and preparation method thereof |
| CN207968902U (en) * | 2018-01-04 | 2018-10-12 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN208549021U (en) * | 2018-08-01 | 2019-02-26 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN109348370A (en) * | 2018-09-30 | 2019-02-15 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN211959522U (en) * | 2019-12-25 | 2020-11-17 | 瑞声科技(新加坡)有限公司 | Sound production device |
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| WO2024000676A1 (en) * | 2022-06-29 | 2024-01-04 | 瑞声光电科技(常州)有限公司 | Speaker box |
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| Publication number | Publication date |
|---|---|
| WO2022110458A1 (en) | 2022-06-02 |
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Application publication date: 20210202 |
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| RJ01 | Rejection of invention patent application after publication |