CN102711021A - Miniature sounding device - Google Patents

Miniature sounding device Download PDF

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Publication number
CN102711021A
CN102711021A CN2012100029320A CN201210002932A CN102711021A CN 102711021 A CN102711021 A CN 102711021A CN 2012100029320 A CN2012100029320 A CN 2012100029320A CN 201210002932 A CN201210002932 A CN 201210002932A CN 102711021 A CN102711021 A CN 102711021A
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CN
China
Prior art keywords
voice coil
fixed
magnetic
mini
sound
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2012100029320A
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Chinese (zh)
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CN102711021B (en
Inventor
宋威
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Microtech Changzhou Co Ltd
AAC Optoelectronic Changzhou Co Ltd
AAC Technologies Holdings Inc
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Optoelectronic Changzhou Co Ltd
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Publication date
Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Optoelectronic Changzhou Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Priority to CN201210002932.0A priority Critical patent/CN102711021B/en
Publication of CN102711021A publication Critical patent/CN102711021A/en
Application granted granted Critical
Publication of CN102711021B publication Critical patent/CN102711021B/en
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Abstract

The invention provides a miniature sounding device. The device comprises a frame and a vibration system and a magnetic circuit system, which are fixed on the frame, wherein the vibration system comprises a diaphragm fixed on the frame and a voice coil stuck to the diaphragm; the magnetic circuit system comprises a magnetic bowl and magnetic steel; the magnetic bowl comprises a bottom wall and a first side wall; a magnetic gap is formed between the first side wall and the magnetic steel; the voice coil is arranged in the magnetic gap; the vibration system also comprises a hollow support part fixed on the voice coil; the support part comprises a sunk part and a first fixing part and a second fixing part, which respectively buckle and extend on the two sides of the sunk part; the first fixing part is fixed at the end, far from the diaphragm, of the voice coil; and the second fixing part is fixed on the magnetic bowl. Compared with the related technologies, the miniature sounding device has high power, good vibration balance effect and higher stability during operation.

Description

Mini-sound device
[technical field]
The present invention relates to a kind of mini-sound device, relate in particular to a kind of mini-sound device that is used in the portable communications product.
[background technology]
Be miniaturization, the multifunction development that adapts to various stereo sets and information communication device; Employed mini-sound device is in requisition for being tending towards miniaturization more in this kind equipment; And compact more with cooperating of said other elements of mini-sound device periphery, particularly along with the lightening growth requirement of mobile phone, wherein employed mini-sound device; Not only require miniaturization, more require high pitch materialization and stereo etc.And be used in the vibrational system of mini-sound device and tonequality that the magnetic circuit system direct relation mini-sound device quality.The vibrational system of correlation technique mini-sound device comprises vibrating diaphragm, the voice coil loudspeaker voice coil on said vibrating diaphragm of being sticked, and magnetic circuit system comprises the magnetic bowl, places the magnet steel in the said magnetic bowl.
Yet; Voice coil loudspeaker voice coil described in its vibrational system of the mini-sound device of correlation technique only can lean on a said vibrating diaphragm fixed support; When said vibrational system vibration work, be easy to generate unbalance vibration, then need reduce power and reduce the balance of vibrational system; Therefore limit the power of vibrational system, and then limited the acoustical behavior of the mini-sound device that uses said vibrational system.
[summary of the invention]
It is big that the technical problem that the present invention need solve provides a kind of power, the mini-sound device that vibration balancing is effective.
According to above-mentioned technical problem, designed a kind of mini-sound device, its objective is such realization: a kind of mini-sound device, it comprises the basin frame, is fixed on vibrational system and magnetic circuit system on the said basin frame.Said vibrational system comprises vibrating diaphragm that is fixed on the said basin frame and the voice coil loudspeaker voice coil that is sticked on said vibrating diaphragm; Said magnetic circuit system comprises magnetic bowl and the magnet steel that places in the said magnetic bowl; Said magnetic bowl comprises diapire and the first side wall that is extended by said diapire bending; Said the first side wall and said magnet steel form magnetic gap, and said voice coil loudspeaker voice coil places in the said magnetic gap.Wherein, Said vibrational system also comprises the support portion that is hollow form that is fixed on the said voice coil loudspeaker voice coil; Said support portion comprises depressed part and is bent first fixed part and second fixed part of extension by said depressed part both sides respectively; Said first fixed part is fixed on the end away from said vibrating diaphragm of said voice coil loudspeaker voice coil, and said second fixed part is fixed on the said magnetic bowl.
Preferably; Said magnetic bowl also comprise by said the first side wall away from an end of said diapire to second sidewall that extends away from the direction of said diapire and by said second sidewall to the retaining magnetic wall that extends near the direction bending of said voice coil loudspeaker voice coil, said retaining magnetic wall and said voice coil loudspeaker voice coil are separated by a distance.
Preferably, said magnetic bowl also is provided with the holddown groove between the said the first side wall and second sidewall, and said second fixed part is fixed in the said holddown groove.
Preferably, said vibrating diaphragm comprises ball top and the ring portion that supports said ball top, and said voice coil loudspeaker voice coil is sticked on said ball top.
Preferably, said voice coil loudspeaker voice coil comprises speech coil framework and the voice coil line of winding on said speech coil framework, and said speech coil framework is sticked on said ball top, and said first fixed part is fixed on the said speech coil framework and is positioned at the end of said voice coil line away from said vibrating diaphragm.
Preferably, said magnetic circuit system also comprises the pole piece that is sticked on said magnet steel.
Preferably, said depressed part is to the direction depression away from said vibrating diaphragm.
Compare with correlation technique, power is big during its work of mini-sound device of the present invention, and vibration balancing is effective, and stability is higher.
[description of drawings]
Fig. 1 is a mini-sound device three-dimensional structure diagram of the present invention.
Fig. 2 is mini-sound device vibrational system of the present invention and magnetic circuit system three-dimensional structure diagram.
Fig. 3 is that Fig. 2 is along A-A line cutaway view.
Fig. 4 is the magnetic bowl cutaway view of Fig. 2 along the A-A line.
[embodiment]
Below in conjunction with accompanying drawing and execution mode the present invention is described further.
Shown in Fig. 1-4, a kind of mini-sound device 10, it comprises basin frame 1, is fixed on vibrational system 2 and magnetic circuit system 3 on the basin frame 1.Vibrational system 2 comprises vibrating diaphragm 21 that is fixed on the basin frame 1 and the voice coil loudspeaker voice coil 22 that is sticked on vibrating diaphragm 21; Magnetic circuit system 3 comprises magnetic bowl 31 and the magnet steel 32 that places in the magnetic bowl 31; Magnetic bowl 31 comprises diapire 311 and the first side wall 312 that is extended by diapire 311 bendings; The first side wall 312 forms magnetic gap 33 with magnet steel 32, and voice coil loudspeaker voice coil 22 places in the magnetic gap 33.Wherein, Vibrational system 2 also comprises the support portion that is hollow form 23 that is fixed on the voice coil loudspeaker voice coil 22; Support portion 23 comprises depressed part 231 and is bent first fixed part 232 and second fixed part 233 of extension by depressed part 231 both sides respectively; First fixed part 232 is fixed on the end away from vibrating diaphragm 21 of voice coil loudspeaker voice coil 22, and second fixed part 233 is fixed on the magnetic bowl 31.Vibrating diaphragm 21 has formed the dual-support structure that voice coil loudspeaker voice coil 22 is carried out fixed support with support portion 23; This dual-support structure has avoided mini-sound device 10 of the present invention its vibrational system 2 when work that unbalance vibration takes place largely; Thereby improved the stability of minitype acoustic generator 10; And can the power of mini-sound device 10 be done more greatly and also not stationary vibration can not take place, make the acoustical behavior of mini-sound device 10 of the present invention more excellent.In this execution mode, depressed part 231 is to away from the direction of vibrating diaphragm 21 depression, depressed part 231 the elastic force that can increase support portion 23 is set so that it can better support voice coil loudspeaker voice coil 22.Certainly, the direction of depressed part 231 its depressions is not limited to this, also can cave in to the direction near said vibrating diaphragm 21, but its principle is all the same.
Mini-sound device 10 its magnetic bowls 31 of the present invention also comprise by the first side wall 312 away from an end of diapire 311 to second sidewall 313 that extends away from the direction of diapire 311 and by second sidewall 313 to the retaining magnetic wall 314 that extends near the direction bending of voice coil loudspeaker voice coil 22, retaining magnetic wall 314 is separated by a distance with voice coil loudspeaker voice coil 22.More excellent, as shown in Figure 4, holddown groove 34, the second fixed parts 233 that magnetic bowl 31 also is provided with between the first side wall 312 and second sidewall 311 are fixed in the holddown groove 34.The magnetic line of force that can stop in the magnetic gap 33 that is provided with of retaining magnetic wall 314 is revealed, thereby has increased the actuating force of magnetic circuit system 3 relatively.And can do the magnetic gap 33 of 312 of the first side walls of magnet steel 32 and magnetic bowl 31 wideer; In the time of can preventing support portion 23 vibration like this and the first side wall 312 bump and produce noise; Simultaneously because of the setting of retaining magnetic wall 314, reveal magnetic and weaken magnetic circuit system 3 actuating forces even magnetic gap 33 is provided with wideer also can the generation.In addition, the magnetic circuit system 3 of mini-sound device 10 of the present invention also comprises the pole piece 35 that is sticked on magnet steel 32, and pole piece 35 is magnetic conduction better, increases the actuating force of magnetic circuit system 3, and then makes mini-sound device 10 acoustical behavioies of the present invention more excellent.
In this execution mode, more excellent, vibrating diaphragm 21 comprises the ring portion 212 at ball top 211 and fulcrum ball top 211, and voice coil loudspeaker voice coil 22 is sticked on ball top 211.Concrete, voice coil loudspeaker voice coil 22 comprises speech coil framework 221 and the voice coil line 222 of winding on speech coil framework 221, and speech coil framework 221 is sticked on ball top 211, and first fixed part 232 is fixed on the speech coil framework 221 and is positioned at the end of voice coil line 222 away from vibrating diaphragm 21.Mini-sound device of the present invention 10 its support portions 23 also can be a flexible centring disk, and can the centring disk setting be had electric conductivity, receive external circuit thereby also can voice coil line 222 be drawn through centring disk, and this all is feasible.
Compare with correlation technique; Mini-sound device of the present invention is provided with the support portion, and the support portion is down-set in the magnetic gap and with vibrating diaphragm and has formed the dual-support structure to voice coil loudspeaker voice coil, good balance effect when making the mini-sound device vibration; Stability is higher; And can the power of mini-sound device of the present invention be done greatlyyer, it is uneven also can not produce vibration, makes that the acoustical behavior of mini-sound device of the present invention is more excellent.
Above-described only is execution mode of the present invention, should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the invention design, can also make improvement, but these all belongs to protection scope of the present invention.

Claims (7)

1. mini-sound device; It comprises the basin frame, is fixed on vibrational system and magnetic circuit system on the said basin frame, and said vibrational system comprises vibrating diaphragm that is fixed on the said basin frame and the voice coil loudspeaker voice coil that is sticked on said vibrating diaphragm; Said magnetic circuit system comprises magnetic bowl and the magnet steel that places in the said magnetic bowl; Said magnetic bowl comprises diapire and the first side wall that is extended by said diapire bending, and said the first side wall and said magnet steel form magnetic gap, and said voice coil loudspeaker voice coil places in the said magnetic gap; It is characterized in that: said vibrational system also comprises the support portion that is hollow form that is fixed on the said voice coil loudspeaker voice coil; Said support portion comprises depressed part and bends first fixed part and second fixed part of extension respectively by said depressed part both sides, and said first fixed part is fixed on the end away from said vibrating diaphragm of said voice coil loudspeaker voice coil, and said second fixed part is fixed on the said magnetic bowl.
2. mini-sound device according to claim 1; It is characterized in that: said magnetic bowl also comprise by said the first side wall away from an end of said diapire to second sidewall that extends away from the direction of said diapire and by said second sidewall to the retaining magnetic wall that extends near the direction bending of said voice coil loudspeaker voice coil, said retaining magnetic wall and said voice coil loudspeaker voice coil are separated by a distance.
3. mini-sound device according to claim 2 is characterized in that: said magnetic bowl also is provided with the holddown groove between the said the first side wall and second sidewall, and said second fixed part is fixed in the said holddown groove.
4. mini-sound device according to claim 3 is characterized in that: said vibrating diaphragm comprises ball top and the ring portion that supports said ball top, and said voice coil loudspeaker voice coil is sticked on said ball top.
5. mini-sound device according to claim 4; It is characterized in that: said voice coil loudspeaker voice coil comprises speech coil framework and the voice coil line of winding on said speech coil framework; Said speech coil framework is sticked on said ball top, and said first fixed part is fixed on the said speech coil framework and is positioned at the end of said voice coil line away from said vibrating diaphragm.
6. mini-sound device according to claim 5 is characterized in that: said magnetic circuit system also comprises the pole piece that is sticked on said magnet steel.
7. mini-sound device according to claim 6 is characterized in that: said depressed part is to the direction depression away from said vibrating diaphragm.
CN201210002932.0A 2012-01-06 2012-01-06 Mini-sound device Active CN102711021B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210002932.0A CN102711021B (en) 2012-01-06 2012-01-06 Mini-sound device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210002932.0A CN102711021B (en) 2012-01-06 2012-01-06 Mini-sound device

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CN102711021A true CN102711021A (en) 2012-10-03
CN102711021B CN102711021B (en) 2017-04-05

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105681983A (en) * 2016-01-12 2016-06-15 瑞声光电科技(常州)有限公司 Loudspeaker
CN106101952A (en) * 2016-07-18 2016-11-09 瑞声科技(新加坡)有限公司 Mini-sound device and manufacture method thereof
CN107682795A (en) * 2017-11-16 2018-02-09 维沃移动通信有限公司 A kind of loudspeaker and electronic equipment
CN109195077A (en) * 2018-08-04 2019-01-11 瑞声科技(新加坡)有限公司 Loudspeaker
CN109218933A (en) * 2018-08-04 2019-01-15 瑞声科技(新加坡)有限公司 Mini-sound device
CN110401903A (en) * 2019-06-26 2019-11-01 瑞声光电科技(常州)有限公司 Microphone device
CN110446145A (en) * 2019-06-26 2019-11-12 瑞声科技(新加坡)有限公司 Microphone device
CN110536224A (en) * 2019-07-12 2019-12-03 国光电器股份有限公司 The assemble method of magnetic circuit structure for loudspeaker
CN110996226A (en) * 2019-11-21 2020-04-10 瑞声科技(新加坡)有限公司 Sound production device
CN111372177A (en) * 2019-11-21 2020-07-03 瑞声科技(新加坡)有限公司 Loudspeaker
WO2020140589A1 (en) * 2018-12-31 2020-07-09 瑞声声学科技(深圳)有限公司 Micro sounding device
CN111464923A (en) * 2019-12-30 2020-07-28 瑞声科技(新加坡)有限公司 Sound producing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2471049Y (en) * 2001-02-14 2002-01-09 方书哲 Improved structure of ball-top loudspeaker
US6526151B1 (en) * 2000-06-29 2003-02-25 Meiloon Industrial Co., Ltd. High stability loudspeaker
US20050231240A1 (en) * 2004-04-15 2005-10-20 Analog Devices, Inc. Reference signal generators
CN202050537U (en) * 2011-04-19 2011-11-23 瑞声声学科技(常州)有限公司 Sounder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6526151B1 (en) * 2000-06-29 2003-02-25 Meiloon Industrial Co., Ltd. High stability loudspeaker
CN2471049Y (en) * 2001-02-14 2002-01-09 方书哲 Improved structure of ball-top loudspeaker
US20050231240A1 (en) * 2004-04-15 2005-10-20 Analog Devices, Inc. Reference signal generators
CN202050537U (en) * 2011-04-19 2011-11-23 瑞声声学科技(常州)有限公司 Sounder

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105681983A (en) * 2016-01-12 2016-06-15 瑞声光电科技(常州)有限公司 Loudspeaker
CN106101952A (en) * 2016-07-18 2016-11-09 瑞声科技(新加坡)有限公司 Mini-sound device and manufacture method thereof
CN106101952B (en) * 2016-07-18 2019-07-05 瑞声科技(新加坡)有限公司 Mini-sound device and its manufacturing method
CN107682795A (en) * 2017-11-16 2018-02-09 维沃移动通信有限公司 A kind of loudspeaker and electronic equipment
CN109195077A (en) * 2018-08-04 2019-01-11 瑞声科技(新加坡)有限公司 Loudspeaker
CN109218933A (en) * 2018-08-04 2019-01-15 瑞声科技(新加坡)有限公司 Mini-sound device
CN109218933B (en) * 2018-08-04 2021-06-15 瑞声科技(新加坡)有限公司 Miniature sounding device
WO2020140589A1 (en) * 2018-12-31 2020-07-09 瑞声声学科技(深圳)有限公司 Micro sounding device
CN110401903A (en) * 2019-06-26 2019-11-01 瑞声光电科技(常州)有限公司 Microphone device
CN110446145A (en) * 2019-06-26 2019-11-12 瑞声科技(新加坡)有限公司 Microphone device
CN110536224A (en) * 2019-07-12 2019-12-03 国光电器股份有限公司 The assemble method of magnetic circuit structure for loudspeaker
CN110996226A (en) * 2019-11-21 2020-04-10 瑞声科技(新加坡)有限公司 Sound production device
CN111372177A (en) * 2019-11-21 2020-07-03 瑞声科技(新加坡)有限公司 Loudspeaker
CN111464923A (en) * 2019-12-30 2020-07-28 瑞声科技(新加坡)有限公司 Sound producing device

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