CN202759586U - Sounder - Google Patents

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Publication number
CN202759586U
CN202759586U CN 201220345174 CN201220345174U CN202759586U CN 202759586 U CN202759586 U CN 202759586U CN 201220345174 CN201220345174 CN 201220345174 CN 201220345174 U CN201220345174 U CN 201220345174U CN 202759586 U CN202759586 U CN 202759586U
Authority
CN
China
Prior art keywords
cover
acoustical generator
vibrating diaphragm
magnet steel
loam cake
Prior art date
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.)
Active
Application number
CN 201220345174
Other languages
Chinese (zh)
Inventor
韦锁和
潘松
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 Pte Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Optoelectronic Changzhou Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Optoelectronic Changzhou Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Priority to CN 201220345174 priority Critical patent/CN202759586U/en
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Publication of CN202759586U publication Critical patent/CN202759586U/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47738743&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN202759586(U) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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Abstract

The utility model provides a sounder including an upper cover, a lower cover, a frame disposed between the upper cover and the lower cover and provided with an accommodation space, and a single sounder accommodated by the accommodation space. The single sounder is provided with a magnetic path system and a vibration system. The magnetic path system is provided with a main steel magnet disposed on the lower cover and auxiliary steel magnets surrounding the outer side of the main steel magnet and forming a magnetic gap with the main steel magnet. The vibration system is provided with a vibrating diaphragm and a sound coil used for driving the vibrating diaphragm to vibrate and suspended in the magnetic gap. A rear cavity is formed between the vibrating diaphragm and the lower cover. The lower cover is provided with a sunken part. The magnetic gap is communicated with the rear cavity though the sunken part. The sounder provided by the utility model can improve the performance of a product.

Description

Acoustical generator
[technical field]
The utility model relates to a kind of acoustical generator, specifically refers to a kind of ultrathin acoustical generator.
[background technology]
Be miniaturization, the multifunction development that adapts to various stereo sets and information communication device, employed acoustical generator is in requisition for more being tending towards miniaturization in this kind equipment, and compacter with cooperating of described other elements of acoustical generator periphery, particularly along with the lightening growth requirement of mobile phone, employed acoustical generator wherein, not only require miniaturization, more require high pitch materialization and stereo etc.
The acoustical generator relevant with the utility model is provided with loam cake, lower cover, the basin frame that is provided with receiving space between loam cake and lower cover and be placed in acoustical generator monomer in the receiving space, described acoustical generator comprises magnetic circuit system and vibrational system, described magnetic circuit system comprises main magnet steel, around the secondary magnet steel in the main magnet steel outside and be positioned at main magnet steel and secondary magnet steel on pole piece, described vibrational system comprises vibrating diaphragm and drives the voice coil loudspeaker voice coil of vibration, when voice coil loudspeaker voice coil drives the vibrating diaphragm vibration, have thermal current in the acoustical generator monomer, therefore, to leak be set on the pole piece, but certain space is arranged before this kind structural requirement lower cover and the basin frame, can increase the height of product, another method is that outer steel is disconnected, use a plurality of magnet steel, with four corners as sender, but this kind Standard complexity, and because the vacancy of corner on real, compare with the magnet steel of the whole circle in the outside, magnetic property can reduce.
Therefore, be necessary to provide a kind of novel acoustical generator to solve the problems referred to above.
[utility model content]
The purpose of this utility model is to provide a kind of acoustical generator that can improve the performance of product.
The technical solution of the utility model is as follows: a kind of acoustical generator, it comprises loam cake, lower cover, the basin frame that is provided with receiving space between loam cake and lower cover and be placed in acoustical generator monomer in the receiving space, described acoustical generator monomer is provided with magnetic circuit system and vibrational system, described magnetic circuit system is provided with and places down the main magnet steel that covers and form the secondary magnet steel of magnetic gap around the described main magnet steel outside and with main magnet steel, described vibrational system is provided with vibrating diaphragm and drives the vibrating diaphragm vibration and be suspended in voice coil loudspeaker voice coil in the magnetic gap, form back cavity between described vibrating diaphragm and the lower cover, be covered with depressed part under described, described magnetic gap is communicated with described back cavity by described depressed part.
Preferably, described depressed part has four, and lays respectively on four angles of lower cover.
Preferably, described secondary magnet steel is circulus.
Preferably, be provided with ante-chamber between described vibrating diaphragm and the loam cake, described basin sets up the louver that is communicated with ante-chamber, and the bearing of trend of described louver is perpendicular to the direction of vibration of vibrating diaphragm.
Preferably, the outward flange of described loam cake is provided with the fixed part that extends to the vibrating diaphragm direction, and described fixed part is embedded in the described basin frame.
The beneficial effects of the utility model are: being provided with of described lower cover is communicated with the depressed part of magnetic gap and back cavity, so that the air in the magnetic gap communicates with back cavity, airflow smooth dispels the heat also than comparatively fast, thus the performance of raising product, and can reduce the height of product.
[description of drawings]
Fig. 1 is the stereogram of the utility model acoustical generator;
Fig. 2 is that Fig. 1 is along the cutaway view of A-A line;
Fig. 3 is the three-dimensional exploded view of the utility model acoustical generator.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1 to Figure 3, be acoustical generator 100 of the present utility model, it comprises loam cake 31, lower cover 32, the basin frame 40 that is provided with receiving space between loam cake 31 and lower cover 32 and is placed in acoustical generator monomer in the receiving space, and wherein lower cover 32 is magnetic conductive board.
The acoustical generator monomer comprises magnetic circuit system and vibrational system, magnetic circuit system is provided with the main magnet steel 221 that is fixed on the lower cover 32, forms the secondary magnet steel 222 of magnetic gap 20, the consequent pole core 212 that is attached at the main pole core 211 of main magnet steel 221 upper surfaces and is attached at secondary magnet steel 222 upper surfaces around described main magnet steel 221 outsides and with main magnet steel 221, wherein, secondary magnet steel 222 and consequent pole core 212 are circulus, are conducive to increase the magnetic property of product; The voice coil loudspeaker voice coil 12 that vibrational system is provided with vibrating diaphragm 11 and drives vibrating diaphragm 11 vibration soundings, described voice coil loudspeaker voice coil 12 is suspended in the magnetic gap 20.After voice coil loudspeaker voice coil 12 energisings, voice coil loudspeaker voice coil 12 can vibrate under the effect in magnetic circuit system magnetic field, and meanwhile, voice coil loudspeaker voice coil 12 drives vibrating diaphragm 11 and together vibrates.
In acoustical generator 100 of the present utility model, form ante-chamber 70 between vibrating diaphragm 11 and the loam cake 31, form back cavity 60 between vibrating diaphragm 11 and the lower cover 32, lower cover 32 is provided with depressed part 320, depressed part 320 is communicated with magnetic gap 20 with back cavity 60, thus, the air-flow in the magnetic gap 20 can flow into back cavity 60 by depressed part 320, so that airflow smooth, heat radiation is also than comparatively fast, in addition, the outer surface of the lower cover 32 of this structure can be used as the sealing surface of acoustical generator 100, the height space that is conducive to save product.
In above-mentioned utility model acoustical generator 100, basin frame 40 is provided with the louver 420 that is communicated with ante-chamber 70, the bearing of trend of louver 420 is perpendicular to the direction of vibration of vibrating diaphragm 11, thus so that acoustical generator 100 side sounding so just can reserve more space to mobile phone screen.For easy to assembly, described basin frame 40 also comprises train wheel bridge 41, lower plate 43 and the framework 42 between train wheel bridge 41 and lower plate 43, and in other embodiments, train wheel bridge 41, lower plate 43 and framework 42 also can be integrative-structures.In the utility model acoustical generator, the outward flange of loam cake 31 is provided with the fixed part 310 that extends to vibrating diaphragm 11 directions, and described fixed part 310 is embedded in the train wheel bridge 41 of basin frame 40, can strengthen like this fixing of loam cake and basin frame; In addition, between lower plate 43 and the lower cover 32 small slit is arranged, in assembling process, can fill glue between the slit, lower plate 43 and lower cover 32 are fixed together.
Above-described only is execution mode of the present utility model; 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 utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.

Claims (6)

1. acoustical generator, it comprises loam cake, lower cover, the basin frame that is provided with receiving space between loam cake and lower cover and be placed in acoustical generator monomer in the receiving space, described acoustical generator monomer is provided with magnetic circuit system and vibrational system, described magnetic circuit system is provided with and places down the main magnet steel that covers and form the secondary magnet steel of magnetic gap around the described main magnet steel outside and with main magnet steel, described vibrational system is provided with vibrating diaphragm and drives the vibrating diaphragm vibration and be suspended in voice coil loudspeaker voice coil in the magnetic gap, form back cavity between described vibrating diaphragm and the lower cover, it is characterized in that: be covered with depressed part under described, described magnetic gap is communicated with described back cavity by described depressed part.
2. acoustical generator according to claim 1, it is characterized in that: described depressed part has four, and lays respectively on four angles of lower cover.
3. acoustical generator according to claim 2, it is characterized in that: described lower cover is magnetic conductive board.
4. acoustical generator according to claim 3, it is characterized in that: described secondary magnet steel is circulus.
5. acoustical generator according to claim 1, it is characterized in that: be provided with ante-chamber between described vibrating diaphragm and the loam cake, described basin sets up the louver that is communicated with ante-chamber, and the bearing of trend of described louver is perpendicular to the direction of vibration of vibrating diaphragm.
6. acoustical generator according to claim 1 is characterized in that: the outward flange of described loam cake is provided with the fixed part that extends to the vibrating diaphragm direction, and described fixed part is embedded in the described basin frame.
CN 201220345174 2012-07-16 2012-07-16 Sounder Active CN202759586U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220345174 CN202759586U (en) 2012-07-16 2012-07-16 Sounder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220345174 CN202759586U (en) 2012-07-16 2012-07-16 Sounder

Publications (1)

Publication Number Publication Date
CN202759586U true CN202759586U (en) 2013-02-27

Family

ID=47738743

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220345174 Active CN202759586U (en) 2012-07-16 2012-07-16 Sounder

Country Status (1)

Country Link
CN (1) CN202759586U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109195083A (en) * 2017-10-09 2019-01-11 约瑟·路易斯·特里 loudspeaker assembly
WO2019161704A1 (en) * 2018-02-26 2019-08-29 歌尔股份有限公司 Acoustic generator
CN111343549A (en) * 2020-03-05 2020-06-26 瑞声科技(新加坡)有限公司 Loudspeaker box

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109195083A (en) * 2017-10-09 2019-01-11 约瑟·路易斯·特里 loudspeaker assembly
WO2019161704A1 (en) * 2018-02-26 2019-08-29 歌尔股份有限公司 Acoustic generator
CN111343549A (en) * 2020-03-05 2020-06-26 瑞声科技(新加坡)有限公司 Loudspeaker box
CN111343549B (en) * 2020-03-05 2021-02-19 瑞声科技(新加坡)有限公司 Loudspeaker box

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20170523

Address after: Singapore Ang Mo Kio 65 Street No. 10 techpoint Building 1 floor, No. 8

Co-patentee after: AAC Optoelectronic (Changzhou) Co., Ltd.

Patentee after: AAC Technologies (Singapore) Co., Ltd.

Address before: Wujin Nanxiashu town Jiangsu city Changzhou province 213167

Co-patentee before: AAC Acoustic Technologies (Shenzhen) Co., Ltd.

Patentee before: AAC Optoelectronic (Changzhou) Co., Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20181025

Address after: No. 8, 2 floor, 85 Cavendish Science Park Avenue, Singapore

Patentee after: AAC Technologies (Singapore) Co., Ltd.

Address before: Singapore Ang Mo Kio 65 Street No. 10 techpoint Building 1 floor, No. 8

Co-patentee before: AAC Optoelectronic (Changzhou) Co., Ltd.

Patentee before: AAC Technologies (Singapore) Co., Ltd.

TR01 Transfer of patent right