CN103312081A - Flat vibration motor - Google Patents
Flat vibration motor Download PDFInfo
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- CN103312081A CN103312081A CN2012100632727A CN201210063272A CN103312081A CN 103312081 A CN103312081 A CN 103312081A CN 2012100632727 A CN2012100632727 A CN 2012100632727A CN 201210063272 A CN201210063272 A CN 201210063272A CN 103312081 A CN103312081 A CN 103312081A
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Abstract
The invention discloses a flat vibration motor. The flat vibration motor comprises an upper casing, a lower casing and an eccentric rotor which is arranged in a cavity which is formed by the upper casing and the lower casing. A coil is arranged on the eccentric rotor. Pairs of upper magnet and lower magnet are symmetrically arranged on the inner wall of the upper casing and the inner wall of the lower casing. The magnetic lines of each pair of upper magnet and lower magnet in the cavity form a closed magnetic circuit. The eccentric rotor is located in a magnetic field formed by the upper magnets and the lower magnets. The flat vibration motor provided by the invention has the advantages that the magnets are arranged in the upper casing and the lower casing, thus magnetic leakage in the motor is reduced; the magnetic lines between the upper magnets and the lower magnets are intense; a large magnetic flux is acquired; the coil can acquire a great driving force; the current required by the motor is small, and the energy consumption is low; the service life of the motor is long; the starting of the eccentric rotor is fast; signal feeding back of the motor is sensitive; by arranging a joint structure, the assembly of the motor is easy; and improvement can be directly carried out on the existing motor, which is convenient for improvement and the application of a customer.
Description
Technical field
The present invention relates to a kind of improvement technology of flat vibration motor.
Background technology
Existing mobile phone all adopts powered battery, and in order to increase the service time of mobile phone, the energy consumption that reduces each electronic unit in the mobile phone is extremely important.Be existing most of mobile phone flat vibration motor structural representation as shown in Figure 1, this flat motor upper casing 1, lower casing 2 and be installed on eccentric rotor 3 in the upper casing, the formed cavity of lower casing, this eccentric rotor is provided with coil 31, is provided with along the uniform magnet 4 of eccentric rotor direction of rotation at the lower casing inwall.During energising, the magnetic field that the electric current in the coil produces and the magnetic field interaction of magnet make rotor continue rotation.But active force is limited between the flat vibration motor coil of this version and magnet, needs higher electric current during motor starting, the power consumption of motor is bigger, and high electric current is also bigger to motor infringement, influences motor useful life, also make motor slack-off to the feedback of signal, use and feel not good enough.
Summary of the invention
In view of this, but the technical problem to be solved in the present invention provides that a kind of low-voltage starts, the low flat vibration motor of power consumption.
In order to solve the problems of the technologies described above, the present invention adopts following scheme to realize:
A kind of flat vibration motor, comprise upper casing, lower casing and be installed on upper casing, the interior eccentric rotor of the formed cavity of lower casing, this eccentric rotor is provided with coil, all be symmetrically arranged with many to upper magnet and lower magnet at upper casing inwall, lower casing inwall, the every pair of upper magnet and the lower magnet magnetic line of force in cavity forms closed magnetic circuit, and eccentric rotor is arranged in the magnetic field that upper magnet, lower magnet form.
As the optimization to such scheme, in upper casing, be provided with the location division that identification upper casing direction is convenient to correctly install magnet.Described location division is through hole, and this through hole is arranged at upper casing bottom, and pin default on this through hole and the upper casing magnet assembling station anchor clamps is corresponding, realizes the consistency of direction when upper casing and magnet are assembled.
Or described location division is the groove that is arranged at upper casing bottom periphery, and this groove is assembled preset on the station anchor clamps protruding corresponding with upper casing magnet, the consistency of direction when realizing the assembling of upper casing and magnet.
Wherein, be provided with between described upper casing and the lower casing and be convenient to upper casing and lower casing coupling docking structure in relative rotation is installed, is prevented when upper casing from assembling with lower casing.
As the further optimization to such scheme, described docking structure is for being arranged at the screens on upper casing and the lower casing respectively, this screens comprises and is arranged at the last screens on the upper casing and is arranged at following screens on the lower casing that the location of realizing upper casing and the circumferential angle of lower casing is docked in last screens with following screens.Described upward screens is the short slot that is arranged at the upper casing periphery, and described screens down is to be arranged at the corresponding extension edge that inserts in the short slot with short slot of lower casing periphery.And described upward screens is one or more pairs of with following screens.
As the further optimization to such scheme, fix or riveted and fixed for the welding of adopting laser welding between described lower casing and the upper casing.
Relative prior art, the present invention has following advantage:
1. by magnet all is set in upper casing, lower casing, make the magnetic line of force crypto set more between magnet, the lower magnet, obtain bigger true flux, thereby coil can obtain bigger motive force;
2. motor makes the electric current that needs littler, and energy consumption is lower;
3. motor is also longer useful life;
4. eccentric rotor starts soon, and motor is sensitiveer to the feedback of signal;
5. by the setting of docking structure, be easier to the assembling of motor;
6. can directly improve convenient the improvement and client's application at existing motor.
Description of drawings
Fig. 1 is existing flat vibration motor cross-sectional structure schematic diagram.
Fig. 2 is embodiment of the invention cross-sectional structure schematic diagram.
Fig. 3 is present embodiment upper casing internal structure schematic diagram.
Fig. 4 installs structural representation behind the magnet for the present embodiment upper casing.
Fig. 5 installs structural representation behind the magnet for the present embodiment lower casing.
Illustrate:
1---upper casing 2---lower casing 3---eccentric rotor
4---upward screens of magnet 6---screens 61---
62---the last magnet of following screens 31---coil 11---
21---lower magnet 5---location division.
Embodiment
Describe in further detail for the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and the present invention of embodiment:
In detail shown in accompanying drawing 2～5.The flat vibration motor that present embodiment discloses comprises upper casing 1, lower casing 2 equally and is installed on upper casing 1, the interior eccentric rotor 3 of lower casing 2 formed cavitys, this eccentric rotor 3 is provided with two coils 31 and weight stack, two coils 31 and weight stack are positioned at eccentric rotor 3 same semi arches, eccentric rotor 3 is when rotating, because center of gravity is not at pivot, thereby the generation vibration.One of difference of this programme and existing flat vibration motor maximum is many to upper magnet 11 and lower magnet 21 for all being symmetrically arranged with at upper casing 1 inwall, lower casing 2 inwalls, every pair of upper magnet 11 forms closed magnetic field with upper casing 1 and lower casing 2 with lower magnet 21 in cavity, eccentric rotor 3 is arranged in closed magnetic field.
In this programme, owing to all be provided with magnet in upper casing 1 and lower casing 2, density of line of magnetic force is big, obtains bigger true flux, makes lower electric current lower coil also can obtain bigger power.Existing relatively flat vibration motor, the required current/voltage of the flat vibration motor of present embodiment design is littler, has both reduced power consumption, has improved motor useful life, also makes motor sensitiveer to the feedback of signal.
In the installation of upper magnet 11 and upper casing 1, owing to need to guarantee to go up the corresponding magnetic line of force that forms sealing with lower magnet N, S polarity in the lower casing 2 of magnet 11, for there is circumferential drift angle in magnet 11 relative upper casings 1 on preventing when last magnet 11 is assembled, in upper casing 1, be provided with the location division 5 that identification upper casing 1 direction is convenient to correctly install magnet 11 in the present embodiment.This location division 5 is through hole, and this through hole is arranged at upper casing 1 bottom, and default pin is corresponding on this through hole and the upper casing 1 magnet assembling station anchor clamps.During assembling, can guarantee the consistency of each upper casing 1 installation direction on anchor clamps according to the positioning instant of pin and through hole, also guaranteed the consistency of last magnet 11 each pole orientation for upper casing 1 when magnet 11 is gone up in assembling thus, lower magnet 21 positions adhere to specification in magnet 11 positions and the lower casing 2 thereby finally make in the upper casing 1, can not produce circumferential angular deviation, when having saved 2 assemblings of upper casing 1 and lower casing by checking that waveform adjusts the operation of upper casing 1 and lower casing 2 deviation angles, save manpower, improved packaging efficiency and accuracy.
In addition, location division 5 of the present invention also can be for being arranged at the groove of upper casing 1 bottom periphery, this groove is assembled preset on the station anchor clamps protruding corresponding with upper casing 1 magnet, the consistency of direction has reached the identical effect of above-mentioned employing through hole mode location structure equally when realizing upper casing 2 with the magnet assembling.
Simultaneously, because the last magnet 11 of upper casing 1 and the magnetic line of force of the lower magnet 21 every pair of magnet identical polars in the lower casing 2 are all towards coil 31 directions, and when assembling, must make every pair of magnet upper-lower position necessary corresponding, be difficult to reach designing requirement when having upper casing 1 and lower casing 2 docking structures now if continue to use.Therefore, the flat vibration motor that discloses of present embodiment also designed a kind ofly be easy to more to assemble, docking structure that structure is more solid and reliable.In detail for another example shown in the accompanying drawing 2,4,5.
Docking structure in this programme is for being arranged at the screens 6 on upper casing 1 and the lower casing 2 respectively, this screens 6 comprises and is arranged at the last screens 61 on the upper casing 1 and is arranged at following screens 62 on the lower casing 2, last screens 61 is three with following screens 62, along circumferential even distribution.Particularly, screens 61 is for being arranged at the short slot of upper casing 1 periphery on this, and this time screens 62 is for being arranged at the corresponding extension edge that inserts in the short slot with short slot of lower casing 2 peripheries.
During assembling, the last screens 61 of upper casing 1 is docked with the following screens 62 in the lower casing 2, can guarantee that upper casing 1 is accurate with the position of lower casing 2 circumferential angles, guaranteed the corresponding of last magnet and lower magnet position.After the butt joint assembling of upper casing 1 and lower casing 2 is finished, adopt laser welding to weld fixing or riveted and fixed again.
And the upper casing 1 under this version need not to form step as skiving upper casing 1 wall in the prior art with lower casing 2 mounting structures could realize the two location, makes upper casing 1 wall keep enough thickness, has guaranteed the bulk strength of motor case.
More than be wherein specific implementation of the present invention, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be noted that; for the person of ordinary skill of the art; without departing from the inventive concept of the premise; can also make some distortion and improvement; as other concrete forms of docking structure, the concrete quantity of magnet etc., these apparent replacement forms all belong to protection scope of the present invention.
Claims (9)
1. flat vibration motor, comprise upper casing (1), lower casing (2) and be installed on upper casing, the interior eccentric rotor (3) of the formed cavity of lower casing, this eccentric rotor is provided with coil (31), it is characterized in that, all be symmetrically arranged with many to upper magnet (11) and lower magnet (21) at upper casing inwall, lower casing inwall, the every pair of upper magnet and the lower magnet magnetic line of force in cavity forms closed magnetic circuit, and eccentric rotor is arranged in the magnetic field that upper magnet, lower magnet form.
2. flat vibration motor according to claim 1 is characterized in that, is provided with the location division (5) that identification upper casing direction is convenient to correctly install magnet in upper casing.
3. flat vibration motor according to claim 2, it is characterized in that described location division is through hole, this through hole is arranged at the upper casing bottom, pin default on this through hole and the upper casing magnet assembling station anchor clamps is corresponding, realizes the consistency of direction when upper casing is assembled with magnet.
4. flat vibration motor according to claim 2, it is characterized in that, described location division is the groove that is arranged at upper casing bottom periphery, and this groove is assembled preset on the station anchor clamps protruding corresponding with upper casing magnet, the consistency of direction when realizing the assembling of upper casing and magnet.
5. according to each described flat vibration motor in the claim 1～4, it is characterized in that, be provided with between described upper casing and the lower casing and be convenient to upper casing and lower casing coupling docking structure in relative rotation is installed, is prevented when upper casing from assembling with lower casing.
6. flat vibration motor according to claim 5, it is characterized in that, described docking structure is for being arranged at the screens (6) on upper casing and the lower casing respectively, this screens comprises and is arranged at the last screens 61 on the upper casing and is arranged at following screens (62) on the lower casing that the location of realizing upper casing and the circumferential angle of lower casing is docked in last screens with following screens.
7. flat vibration motor according to claim 6 is characterized in that, described upward screens is the short slot that is arranged at the upper casing periphery, and described screens down is to be arranged at the corresponding extension edge that inserts in the short slot with short slot of lower casing periphery.
8. flat vibration motor according to claim 7 is characterized in that, described upward screens is one or more pairs of with following screens.
9. flat vibration motor according to claim 8 is characterized in that, fixes or riveted and fixed for the welding of adopting laser welding between described lower casing and the upper casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100632727A CN103312081A (en) | 2012-03-12 | 2012-03-12 | Flat vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100632727A CN103312081A (en) | 2012-03-12 | 2012-03-12 | Flat vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103312081A true CN103312081A (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100632727A Pending CN103312081A (en) | 2012-03-12 | 2012-03-12 | Flat vibration motor |
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| CN (1) | CN103312081A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262264A (en) * | 2015-11-09 | 2016-01-20 | 昆山联滔电子有限公司 | Flat vibration motor |
| CN111834120A (en) * | 2020-08-07 | 2020-10-27 | 谭章平 | Production device for pressing, curing and linking neodymium iron boron magnet containing heavy rare earth |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4710667A (en) * | 1984-06-12 | 1987-12-01 | Maghemite Inc. | Brushless D.C. dynamoelectric machine with decreased magnitude of pulsations of air gap flux |
| KR20010069659A (en) * | 2001-04-25 | 2001-07-25 | 김주연 | Vibration motor |
| CN1992475A (en) * | 2005-12-27 | 2007-07-04 | 三星电机株式会社 | Vibration motor |
| KR20090060391A (en) * | 2008-11-06 | 2009-06-12 | 엘지이노텍 주식회사 | Flat type vibration motor |
| CN101933216A (en) * | 2008-04-30 | 2010-12-29 | 日本电产科宝株式会社 | Motor |
| CN102290924A (en) * | 2010-06-16 | 2011-12-21 | Lg伊诺特有限公司 | A manufacturing method of a vibration motor and the vibration motor manufactured with the method |
| KR101101437B1 (en) * | 2010-06-25 | 2012-01-02 | 삼성전기주식회사 | Vibration motor of flat type |
| KR101122448B1 (en) * | 2010-08-17 | 2012-02-29 | 삼성전기주식회사 | Vibration motor of flat type |
| CN202160056U (en) * | 2011-08-15 | 2012-03-07 | 浙江省东阳市诚基电机有限公司 | Double magnetic steel flat vibration motor |
| CN202663234U (en) * | 2012-03-12 | 2013-01-09 | 惠州市华阳多媒体电子有限公司 | Flat vibration motor |
-
2012
- 2012-03-12 CN CN2012100632727A patent/CN103312081A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4710667A (en) * | 1984-06-12 | 1987-12-01 | Maghemite Inc. | Brushless D.C. dynamoelectric machine with decreased magnitude of pulsations of air gap flux |
| KR20010069659A (en) * | 2001-04-25 | 2001-07-25 | 김주연 | Vibration motor |
| CN1992475A (en) * | 2005-12-27 | 2007-07-04 | 三星电机株式会社 | Vibration motor |
| CN101933216A (en) * | 2008-04-30 | 2010-12-29 | 日本电产科宝株式会社 | Motor |
| KR20090060391A (en) * | 2008-11-06 | 2009-06-12 | 엘지이노텍 주식회사 | Flat type vibration motor |
| CN102290924A (en) * | 2010-06-16 | 2011-12-21 | Lg伊诺特有限公司 | A manufacturing method of a vibration motor and the vibration motor manufactured with the method |
| KR101101437B1 (en) * | 2010-06-25 | 2012-01-02 | 삼성전기주식회사 | Vibration motor of flat type |
| KR101122448B1 (en) * | 2010-08-17 | 2012-02-29 | 삼성전기주식회사 | Vibration motor of flat type |
| CN202160056U (en) * | 2011-08-15 | 2012-03-07 | 浙江省东阳市诚基电机有限公司 | Double magnetic steel flat vibration motor |
| CN202663234U (en) * | 2012-03-12 | 2013-01-09 | 惠州市华阳多媒体电子有限公司 | Flat vibration motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262264A (en) * | 2015-11-09 | 2016-01-20 | 昆山联滔电子有限公司 | Flat vibration motor |
| CN111834120A (en) * | 2020-08-07 | 2020-10-27 | 谭章平 | Production device for pressing, curing and linking neodymium iron boron magnet containing heavy rare earth |
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Application publication date: 20130918 |