CN201878324U - Moving-iron type low frequency acoustical generator - Google Patents
Moving-iron type low frequency acoustical generator Download PDFInfo
- Publication number
- CN201878324U CN201878324U CN2010206270054U CN201020627005U CN201878324U CN 201878324 U CN201878324 U CN 201878324U CN 2010206270054 U CN2010206270054 U CN 2010206270054U CN 201020627005 U CN201020627005 U CN 201020627005U CN 201878324 U CN201878324 U CN 201878324U
- Authority
- CN
- China
- Prior art keywords
- circuit system
- magnetic circuit
- sheet
- voice coil
- magnetic
- 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.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000001746 injection moulding Methods 0.000 claims abstract description 4
- 230000005389 magnetism Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 230000001605 fetal effect Effects 0.000 abstract 2
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model discloses a moving-iron type low frequency acoustical generator comprising a frame, a support chip, a gasket, a mass sheet, a magnetic cup, a sound film, a front cover, magnetic steel, a clamping plate, a printed board, a voice coil and a rear cover. The low frequency acoustical generator is characterized in that the magnetic cup, the magnetic steel and the clamping plate form a constant magnetic circuit system; the constant magnetic circuit system and the support chip form a vibratory magnetic circuit system; the support chip with the structural form of an insert is integrally formed with the frame by injection molding; the gasket is arranged between the mass sheet and the support chip; the edge of the sound film is fixed on the frame and the center of the sound film is connected with the vibratory magnetic circuit system; the front cover is arranged outside the sound film; the magnetic cup and the clamping plate form a magnetic gap; the printed board is fixed on the frame; and one end of the voice coil is fixed on the rear cover and the other end of the voice coil is inserted in the magnetic gap of the constant magnetic circuit system. The moving-iron type low frequency acoustical generator provided by the utility model is small in size, and can be mainly applied to products that generate sound with lower frequency and are not allowed to have greater size, such as portable fetal pulse listening devices which can play the fetal pulse detected by the listening device.
Description
Technical field
The utility model relates to the small and exquisite low-frequency audible signal device of a kind of volume, particularly a kind of moving-iron type low-frequency audible signal device.
Background technology
Present traditional electrodynamic type woofer, its constant magnetic circuit is fixed, by driving the vibrating diaphragm sounding at the voice coil loudspeaker voice coil of axis direction vibration, if send the sound of lower frequency, it is bigger that its vibrating diaphragm just need be done, usually all more than 150mm, can not be used in need pocket, on the product that carries easily.
The utility model content
The purpose of this utility model is that a kind of volume of providing for the deficiency that solves above-mentioned technology is little and can send the moving-iron type low-frequency audible signal device of lower frequency sounds.
In order to achieve the above object, a kind of moving-iron type low-frequency audible signal device of the utility model design, it comprises basin frame, a sheet, pad, quality sheet, magnetic cup, sound film, protecgulum, magnet steel, clamping plate, printed board, voice coil loudspeaker voice coil and bonnet, its feature magnetic cup, magnet steel and clamping plate constitute constant magnetic circuit system, and a constant magnetic circuit system and a sheet constitute the vibration magnetic circuit system; Prop up sheet and adopt insert structure form and the moulding of basin frame integrated through injection molding, described sheet is that elasticity is propped up sheet, for constant magnetic circuit system provides the elasticity support, this sheet provides centering and supporting role to the vibration magnetic circuit system, the radially application of constrained vibration magnetic circuit system on the one hand allows the axis direction vibration of vibration magnetic circuit system in regulation on the other hand.Pad is located between a quality sheet and the sheet, and a quality sheet and a sheet are separated, and prevents that a sheet and quality sheet from producing movement interference.The edge of sound film is fixed on the basin frame, and its center links to each other with the vibration magnetic circuit system, and acoustic irradiation is come out.Protecgulum is located at outside the sound film, and the effect of protection is provided for the sound film.Magnetic cup and clamping plate provide magnetism guiding access for magnet steel, and form magnetic gap together, and printed board is fixed on the basin frame, are electrically connected for voice coil loudspeaker voice coil and external circuit provide.Voice coil loudspeaker voice coil one end is fixed on the bonnet, and the other end is inserted in the magnetic gap of constant magnetic circuit system.When having electric current to pass through in the voice coil loudspeaker voice coil, the vibration magnetic circuit system vibrates thereby produce by electromagnetic induction.Bonnet both provided protection for the vibration magnetic circuit system, was used for fixing voice coil loudspeaker voice coil again.Present embodiment has designed 20 millimeters of diameters, and high 6 millimeters basin frame is for vibrational system provides support.Described magnet steel can be the magnet steel of NdFeB material, for constant magnetic circuit system provides magnetic energy.
The utility model is connected with one sheet constant magnetic circuit system with the basin frame, constituted the magnetic circuit that can vibrate.
For at this, the design of quality sheet, the eigentone that can be used for regulating magnetic circuit system can change the natural frequency of system according to the different requirements of product like this by the quality of quality of regulation sheet.
The moving-iron type low-frequency audible signal device that the utility model obtains, the constant magnetic circuit system that the application support can vibrate is supported on the fixing voice coil loudspeaker voice coil, produce electromagnetic induction power by the stationary magnetic field in alternating magnetic field in the coil and the constant magnetic circuit system, promote the vibration of vibration magnetic circuit system, vibrate thereby drive the sound film that links to each other with the vibration magnetic circuit system, send sound wave.
The moving-iron type low-frequency audible signal device that the utility model provides, volume is small and exquisite, mainly can be applicable to some and need send the lower sound of frequency ratio, and don't allow in the bigger volume product, such as portable tire sound audiphone.And the moving-iron type low-frequency audible signal device that the utility model provides, it has adopted voice coil loudspeaker voice coil to fix and the pattern of magnetic circuit vibration, and it is very low that its system's eigentone can be done, and therefore can significantly reduce the volume of product, below 30mm.The utility model can be applicable in the portable tire sound audiphone, and the tire sound that audiphone is detected plays back.
Description of drawings
Fig. 1 is the utility model embodiment sectional structure schematic diagram.
Wherein: basin frame 1, a sheet 2, pad 3, quality sheet 4, magnetic cup 5, sound film 6, protecgulum 7, magnet steel 8, clamping plate 9, printed board 10, voice coil loudspeaker voice coil 11, bonnet 12.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1
As shown in Figure 1, the described moving-iron type low-frequency audible signal device of present embodiment, it comprises basin frame 1, a sheet 2, pad 3, quality sheet 4, magnetic cup 5, sound film 6, protecgulum 7, magnet steel 8, clamping plate 9, printed board 10, voice coil loudspeaker voice coil 11 and bonnet 12, magnetic cup 5, magnet steel 8 and clamping plate 9 constitute constant magnetic circuit, a constant magnetic circuit and a sheet 2 constitute the vibration magnetic circuit system, and present embodiment is bonded together magnetic cup 5, magnet steel 8 and clamping plate 9 and constitutes constant magnetic circuit system; Prop up sheet 2 and adopt insert structure form and the 1 integrated through injection molding moulding of basin frame, described sheet 2 is that elasticity is propped up sheet, and pad 3 is located between a quality sheet 4 and the sheet 2, a quality sheet 4 and a sheet 2 are separated, the edge of sound film 6 is fixed on the basin frame 1, and its center links to each other with the vibration magnetic circuit system, and acoustic irradiation is come out.Protecgulum 7 is located at outside the sound film 6, and the effect of protection is provided for the sound film.The material of the adoptable neodymium iron boron of magnet steel of present embodiment is for constant magnetic circuit provides magnetic energy.Magnetic cup 5 and clamping plate 9 provide magnetism guiding access for magnet steel 8, and form magnetic gap together, and printed board 10 is fixed on the basin frame 1, are electrically connected for voice coil loudspeaker voice coil and external circuit provide.Voice coil loudspeaker voice coil 11 1 ends are fixed on the bonnet 12, and the other end is inserted in the magnetic gap of constant magnetic circuit.When having electric current to pass through in the voice coil loudspeaker voice coil, the vibration magnetic circuit system vibrates thereby produce by electromagnetic induction.Bonnet 12 both provided protection for the vibration magnetic circuit system, was used for fixing voice coil loudspeaker voice coil 11 again.20 millimeters of the basin frame diameters of present embodiment design are high 6 millimeters.
Present embodiment is with magnetic cup 5, and pad 3 and quality sheet 4 usefulness adhesives stick together; With magnet steel 8, clamping plate 9 bond together with adhesive and magnetic cup 5 under the location of magnetic rule; Printed board 10 and bonnet 12 are bonded together; Voice coil loudspeaker voice coil 11 is bonded on the bonnet 12; Bonnet 12 and basin frame 1 are bonded together; Sound film 6 edges and basin frame 1 are bonded together, and the centre of sound film 6 and magnetic cup 5 bond together; Protecgulum 7 and basin frame 1 is bonding; The voice coil line of voice coil loudspeaker voice coil 11 is welded in the printed board 10.
Claims (3)
1. moving-iron type low-frequency audible signal device, it comprises basin frame (1), prop up sheet (2), pad (3), quality sheet (4), magnetic cup (5), sound film (6), protecgulum (7), magnet steel (8), clamping plate (9), printed board (10), voice coil loudspeaker voice coil (11) and bonnet (12), it is characterized in that: magnetic cup (5), magnet steel (8) and clamping plate (9) constitute constant magnetic circuit system, a constant magnetic circuit system and a sheet (2) constitute the vibration magnetic circuit system, prop up sheet (2) and adopt insert structure form and basin frame (1) integrated through injection molding moulding, described sheet (2) is that elasticity is propped up sheet, pad (3) is located between a quality sheet (4) and the sheet (2), the edge of sound film (6) is fixed on the basin frame (1), its center links to each other with the vibration magnetic circuit system, protecgulum (7) is located at outside the sound film (6), magnetic cup (5) and clamping plate (9) provide magnetism guiding access for magnet steel (8), and form magnetic gap together, printed board (10) is fixed on the basin frame (1), voice coil loudspeaker voice coil (11) one ends are fixed on the bonnet (12), and the other end is inserted in the magnetic gap of constant magnetic circuit system.
2. moving-iron type low-frequency audible signal device according to claim 1 is characterized in that described magnet steel (8) is the magnet steel of NdFeB material.
3. moving-iron type low-frequency audible signal device according to claim 1 and 2 is characterized in that 20 millimeters of its diameters of described basin frame (1), and is high 6 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206270054U CN201878324U (en) | 2010-11-26 | 2010-11-26 | Moving-iron type low frequency acoustical generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206270054U CN201878324U (en) | 2010-11-26 | 2010-11-26 | Moving-iron type low frequency acoustical generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201878324U true CN201878324U (en) | 2011-06-22 |
Family
ID=44166231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206270054U Expired - Lifetime CN201878324U (en) | 2010-11-26 | 2010-11-26 | Moving-iron type low frequency acoustical generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201878324U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102026072A (en) * | 2010-11-26 | 2011-04-20 | 宁波凯普电子有限公司 | Moving iron type low frequency acoustic generator |
| WO2013044549A1 (en) * | 2011-09-30 | 2013-04-04 | 苏州恒听电子有限公司 | Sound transmitting tube device for micro speaker device |
| CN103079132A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Telephone receiver used for low-frequency compensation |
| WO2013123777A1 (en) * | 2012-02-22 | 2013-08-29 | 歌尔声学股份有限公司 | Sounder module and assembly method thereof |
| WO2016004580A1 (en) * | 2014-07-08 | 2016-01-14 | 声电电子科技(惠州)有限公司 | Low frequency vibrator |
| CN105992108A (en) * | 2015-02-03 | 2016-10-05 | 孙振华 | Self-filtering electromagnetism sealing bass energy converter |
| WO2019196105A1 (en) * | 2018-04-11 | 2019-10-17 | 深圳倍声声学技术有限公司 | Moving-iron structure |
| CN110868678A (en) * | 2019-11-12 | 2020-03-06 | 珠海惠威科技有限公司 | Curved Ribbon Speaker |
| CN116170724A (en) * | 2021-11-24 | 2023-05-26 | 华为技术有限公司 | Moving iron exciter and audio equipment |
-
2010
- 2010-11-26 CN CN2010206270054U patent/CN201878324U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102026072A (en) * | 2010-11-26 | 2011-04-20 | 宁波凯普电子有限公司 | Moving iron type low frequency acoustic generator |
| WO2013044549A1 (en) * | 2011-09-30 | 2013-04-04 | 苏州恒听电子有限公司 | Sound transmitting tube device for micro speaker device |
| WO2013123777A1 (en) * | 2012-02-22 | 2013-08-29 | 歌尔声学股份有限公司 | Sounder module and assembly method thereof |
| CN103079132A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Telephone receiver used for low-frequency compensation |
| CN103079132B (en) * | 2012-12-25 | 2015-09-02 | 苏州恒听电子有限公司 | A kind of receiver for low-frequency compensation |
| WO2016004580A1 (en) * | 2014-07-08 | 2016-01-14 | 声电电子科技(惠州)有限公司 | Low frequency vibrator |
| CN105992108A (en) * | 2015-02-03 | 2016-10-05 | 孙振华 | Self-filtering electromagnetism sealing bass energy converter |
| WO2019196105A1 (en) * | 2018-04-11 | 2019-10-17 | 深圳倍声声学技术有限公司 | Moving-iron structure |
| CN110868678A (en) * | 2019-11-12 | 2020-03-06 | 珠海惠威科技有限公司 | Curved Ribbon Speaker |
| CN116170724A (en) * | 2021-11-24 | 2023-05-26 | 华为技术有限公司 | Moving iron exciter and audio equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |