CN204305346U - A kind of magnetic circuit device and moving-coil type acoustic generator part thereof - Google Patents
A kind of magnetic circuit device and moving-coil type acoustic generator part thereof Download PDFInfo
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- CN204305346U CN204305346U CN201420814901.XU CN201420814901U CN204305346U CN 204305346 U CN204305346 U CN 204305346U CN 201420814901 U CN201420814901 U CN 201420814901U CN 204305346 U CN204305346 U CN 204305346U
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- circuit device
- magnetic circuit
- yoke
- magnet
- inner magnet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model relates to the technical field of microphone device, disclose a kind of magnetic circuit device, comprise yoke, inner magnet and washer, inner magnet is located at yoke inner bottom surface, the direction of magnetization of this inner magnet is axially arrange, washer is located on inner magnet, outer magnet is provided with in the outside of yoke, the magnetic direction of this outer magnet is radial setting, also disclose a kind of moving-coil type acoustic generator part, comprise magnetic circuit device and vibrational system, magnetic circuit device is aforesaid magnetic circuit device, vibrational system comprises a support, one is connected to the vibrating diaphragm on support, one is connected to the voice coil loudspeaker voice coil under vibrating diaphragm and is located at the protecgulum of pedestal upper end, this support is connected with magnetic circuit device, the magnetic circuit device of the utility model simplifies the structure and manufacturing procedure, save material and cost, greatly strengthen magnetic flux density, its moving-coil type acoustic generator part substantially increases sounding effect.
Description
Technical field
The utility model relates to the technical field of microphone device, espespecially a kind of magnetic circuit device and moving-coil type acoustic generator part thereof.
Background technology
Moving-coil type acoustic generator part is widely used in mobile phone, portable computer, the products such as subwoofer speaker, and its operation principle is that under adopting steady magnetic field, tone currents promotes vibrating membrane sounding by moving-coil; Along with the burst in intelligent consumption series products market is in recent years grown up, the technology innovation of this series products is maked rapid progress, also have higher requirement to the technical parameter of the moving-coil type acoustic generator part of its vitals, volume requirement is more and more thinner, and tonequality requires more and more higher.
The single magnetic structure of the many employings of drive system of traditional movable coil phonating device part, but single magnetic circuit (interior magnetic or outer magnetic) drive system is because of its single magnetic structure, drive efficiency is limited, be difficult to meet the requirement of high sound press high tone quality, or for improving drive efficiency adopt interior magnetic to add drive system that outer magnetic magnetic direction is all the composite magnetic circuit structure of axial charging, and conventional interior magnetic adds the composite magnetic circuit configured drive system of outer magnetic, because its magnet is all axial magnetic field, magnet and magnetic conductive part increase, processing technology relative complex, material cost and processing cost is caused to rise, have impact on the application of product.
Summary of the invention
The purpose of this utility model is overcome weak point of the prior art and provide a kind of magnetic circuit device and moving-coil type acoustic generator part thereof, its magnetic circuit device simplifies the structure and manufacturing procedure, save material and cost, greatly strengthen magnetic flux density, adopt aforesaid moving-coil type acoustic generator part, effectively improve sounding effect.
For achieving the above object, the utility model adopts following technical scheme:
A kind of magnetic circuit device, comprise yoke, inner magnet and washer, described inner magnet is located at yoke inner bottom surface, the direction of magnetization of this inner magnet is axially arrange, described washer is located on inner magnet, is provided with outer magnet in the outside of yoke, and the magnetic direction of this outer magnet is radial setting.
The yoke edge of described magnetic circuit device has upwards vertically extended to form some sidewalls, and the height of each sidewall is consistent, and the outer magnet of magnetic circuit device is vertically arranged on each corresponding wall outer surface on yoke.
The inner magnet of described magnetic circuit device is located at the center of yoke inner bottom surface, and laterally installs, and each side and the yoke corresponding edge of this inner magnet are formed with gap, and respectively the distance in this gap is consistent.
The washer of described magnetic circuit device is fixedly connected on the upper surface of inner magnet, and the shape of this washer is consistent with the shape of inner magnet.
A kind of moving-coil type acoustic generator part, comprise magnetic circuit device and vibrational system, described magnetic circuit device is above-mentioned magnetic circuit device, described vibrational system comprises a support, vibrating diaphragm, be connected on support and is connected to the voice coil loudspeaker voice coil under vibrating diaphragm and is located at the protecgulum of pedestal upper end, and this support is connected with magnetic circuit device.
Be formed with gap between the sidewall of described magnetic circuit device and inner magnet, the voice coil loudspeaker voice coil of described vibrational system is hung in this gap between two parties, covers and be provided with some through holes before vibrational system.
The beneficial effects of the utility model are: its magnetic circuit device designs in the outer magnet of yoke lateral surface, decrease the setting of outer magnetic conductance magnetic washer, simplify the structure and manufacturing procedure, save material and cost, the radial direction of outer magnet magnetic direction arranges and arranges with the axis of internal magnet magnetic direction, greatly strengthen magnetic flux density, adopt the moving-coil type acoustic generator part of aforementioned magnetic circuit device, effectively improve sounding effect.
Accompanying drawing explanation
Fig. 1 is the magnetic circuit direction schematic diagram of the magnetic circuit device of the utility model.
Fig. 2 is the plan structure schematic diagram of the magnetic circuit device of the utility model.
Fig. 3 is the structural representation of the moving-coil type acoustic generator part of the utility model.
Fig. 4 is the magnetic circuit direction schematic diagram of existing single magnetic circuit device.
Fig. 5 is the magnetic circuit direction schematic diagram of existing double magnetic circuit device.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail:
As Figure 1-3, the utility model, about a kind of magnetic circuit device, comprises yoke 11, inner magnet 12 and washer 13.
As Figure 2-3, inner magnet 12 is located at yoke 11 inner bottom surface, the direction of magnetization of this inner magnet 12 is axially arrange, washer 13 is located on inner magnet 12, outer magnet 14 is provided with in the outside of yoke 11, the magnetic direction of this outer magnet 14 is radial setting, when mounted, general by inner magnet 12 horizontally set, outer magnet 14 is longitudinally arranged, adopts magnetizing equipment to carry out magnetization treatment to inner magnet 12 and outer magnet 14, inner magnet 12 and outer magnet 14 magnetic direction are controlled, make the magnetic direction of inner magnet 12 for axial, the magnetic direction of outer magnet 14 is radial.
As Figure 2-3, wherein, yoke 11 edge of magnetic circuit device 10 has upwards vertically extended to form some sidewalls 111, and the height of each sidewall 111 is consistent, and the outer magnet 14 of magnetic circuit device 10 is vertically arranged on each corresponding sidewall 111 outer surface on yoke 11.
As Figure 2-3, wherein, the inner magnet 12 of magnetic circuit device 10 is located at the center of yoke 11 inner bottom surface, and laterally installs, and each side and yoke 11 corresponding edge of this inner magnet 12 are formed with gap, and respectively the distance in this gap is consistent.
As Figure 2-3, wherein, the washer 13 of magnetic circuit device 10 is fixedly connected on the upper surface of inner magnet 12, and the shape of this washer 13 is consistent with the shape of inner magnet 12.
As Figure 1-3, a kind of moving-coil type acoustic generator part, comprise magnetic circuit device 10 and vibrational system 20, magnetic circuit device 10 is above-mentioned magnetic circuit device 10, vibrational system 20 comprises a support 21, and connects vibrating diaphragm 22, on the stent 21 and be connected to the voice coil loudspeaker voice coil 23 under vibrating diaphragm 22 and be located at the protecgulum 24 of support 21 upper end, and this support 21 is connected with magnetic circuit device 10.
Further, gap is formed between the sidewall of magnetic circuit device 10 and inner magnet 12, the voice coil loudspeaker voice coil 23 of vibrational system 20 is hung in this gap between two parties, and the protecgulum 24 of vibrational system 20 is provided with some through holes, and respectively this through hole ensures the normal sounding of this moving-coil type acoustic generator part.
A kind of magnetic circuit device that the utility model discloses and moving-coil type acoustic generator part 10 thereof, interact with the inner magnet 12 of axial magnetized with the outer magnet 14 of diametrical magnetization, by yoke 11 and washer 13 as magnetic conduction medium, both magnetic field superposition, magnetic field intensity is enhanced, improve the magnetic flux density of magnetic circuit device 10, thus improve the sounding effect of product.
It should be noted that, the utility model subtracts outer magnet 14 volume and quantity by adding, carry out the magnetic flux density of magnetic circuit device 10, particularly in the operation strengthening magnet strength, because of without the need to arranging washer 13, only need carry out simple superposition on outer magnet 14, just can strengthen the Overlay in magnetic field, promote the magnetic flux density of magnetic circuit device 10, simple to operate, the quantity of outer magnet 14 can be arranged according to actual requirement, does not give from limit at this.
The above is only to preferred embodiment of the present utility model; not scope of the present utility model is limited; therefore under the prerequisite not departing from the utility model design spirit; the equivalence change that the common engineers and technicians in this area do structure described in the utility model, feature and principle or decoration, all should fall in protection range that the utility model applies for a patent.
Claims (6)
1. a magnetic circuit device, comprise yoke, inner magnet and washer, it is characterized in that: described inner magnet is located at yoke inner bottom surface, the direction of magnetization of this inner magnet is axially arrange, described washer is located on inner magnet, be provided with outer magnet in the outside of yoke, the magnetic direction of this outer magnet is radial setting.
2. magnetic circuit device according to claim 1, it is characterized in that: the yoke edge of described magnetic circuit device has upwards vertically extended to form some sidewalls, the height of each sidewall is consistent, and the outer magnet of magnetic circuit device is vertically arranged on each corresponding wall outer surface on yoke.
3. magnetic circuit device according to claim 1, is characterized in that: the inner magnet of described magnetic circuit device is located at the center of yoke inner bottom surface, and each side and the yoke corresponding edge of this inner magnet are formed with gap, and respectively the distance in this gap is consistent.
4. magnetic circuit device according to claim 1, is characterized in that: the washer of described magnetic circuit device is fixedly connected on the upper surface of inner magnet, and the shape of this washer is consistent with the shape of inner magnet.
5. a moving-coil type acoustic generator part, comprise magnetic circuit device and vibrational system, it is characterized in that: described magnetic circuit device is the magnetic circuit device described in any one of the claims 1-4, described vibrational system comprises a support, vibrating diaphragm, be connected on support and is connected to the voice coil loudspeaker voice coil under vibrating diaphragm and is located at the protecgulum of pedestal upper end, and this support is connected with magnetic circuit device.
6. moving-coil type acoustic generator part according to claim 5, is characterized in that: be formed with gap between the sidewall of described magnetic circuit device and inner magnet, and the voice coil loudspeaker voice coil of described vibrational system is hung in this gap between two parties, covers and be provided with some through holes before vibrational system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814901.XU CN204305346U (en) | 2014-12-22 | 2014-12-22 | A kind of magnetic circuit device and moving-coil type acoustic generator part thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814901.XU CN204305346U (en) | 2014-12-22 | 2014-12-22 | A kind of magnetic circuit device and moving-coil type acoustic generator part thereof |
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| Publication Number | Publication Date |
|---|---|
| CN204305346U true CN204305346U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420814901.XU Active CN204305346U (en) | 2014-12-22 | 2014-12-22 | A kind of magnetic circuit device and moving-coil type acoustic generator part thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006334A (en) * | 2015-06-23 | 2015-10-28 | 歌尔声学股份有限公司 | Technology for magnetizing multiple magnetic circuits |
| WO2019193365A1 (en) * | 2018-04-06 | 2019-10-10 | Nvf Tech Ltd | Distributed mode loudspeaker electromagnetic actuator with axially and radially magnetized circuit |
| US10848874B2 (en) | 2018-02-20 | 2020-11-24 | Google Llc | Panel audio loudspeaker electromagnetic actuator |
-
2014
- 2014-12-22 CN CN201420814901.XU patent/CN204305346U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006334A (en) * | 2015-06-23 | 2015-10-28 | 歌尔声学股份有限公司 | Technology for magnetizing multiple magnetic circuits |
| CN105006334B (en) * | 2015-06-23 | 2017-08-18 | 歌尔股份有限公司 | Multipath magnetic circuit magnetizes technique |
| US10225660B2 (en) | 2015-06-23 | 2019-03-05 | Goertek Inc. | Process for magnetizing multiple magnetic circuits |
| US10848874B2 (en) | 2018-02-20 | 2020-11-24 | Google Llc | Panel audio loudspeaker electromagnetic actuator |
| CN112075091A (en) * | 2018-02-20 | 2020-12-11 | 谷歌有限责任公司 | Electromagnetic actuator for panel audio speaker |
| TWI798358B (en) * | 2018-02-20 | 2023-04-11 | 美商谷歌有限責任公司 | Panel audio loudspeaker electromagnetic actuator |
| WO2019193365A1 (en) * | 2018-04-06 | 2019-10-10 | Nvf Tech Ltd | Distributed mode loudspeaker electromagnetic actuator with axially and radially magnetized circuit |
| CN111937409A (en) * | 2018-04-06 | 2020-11-13 | 谷歌有限责任公司 | Distributed mode loudspeaker electromagnetic actuator with axial and radial magnetization circuits |
| US10841704B2 (en) | 2018-04-06 | 2020-11-17 | Google Llc | Distributed mode loudspeaker electromagnetic actuator with axially and radially magnetized circuit |
| TWI727295B (en) * | 2018-04-06 | 2021-05-11 | 美商谷歌有限責任公司 | Distributed mode loudspeaker electromagnetic actuator with axially and radially magnetized circuit |
| CN113873403A (en) * | 2018-04-06 | 2021-12-31 | 谷歌有限责任公司 | Distributed mode loudspeaker electromagnetic actuator with axial and radial magnetization circuits |
| CN111937409B (en) * | 2018-04-06 | 2022-06-03 | 谷歌有限责任公司 | Distributed mode loudspeaker electromagnetic actuator with axial and radial magnetization circuits |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |