CN205017196U - A damping device for linear vibration motor - Google Patents
A damping device for linear vibration motor Download PDFInfo
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- CN205017196U CN205017196U CN201520571529.9U CN201520571529U CN205017196U CN 205017196 U CN205017196 U CN 205017196U CN 201520571529 U CN201520571529 U CN 201520571529U CN 205017196 U CN205017196 U CN 205017196U
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Abstract
The utility model discloses a damping device for linear vibration motor. Its involving vibrations part, magnetic field subtotal machine housing part, the shape of cross section of oscillating component is type shape, oscillating component and magnetic field part install the inside at quick -witted housing part, the oscillating component install the outside in magnetic field part, the oscillating component on be equipped with the shock attenuation and glue, magnetic field part and quick -witted housing part between be equipped with magnetic fluid. The beneficial effects of the utility model are that: through utilizing the shock attenuation to glue and magnetic fluid, have good cushioning effect, cooperate the design of inclined plane chamfer simultaneously, make it can effectually avoid and absorb contact noise and the collision that contacts and arouse between oscillating component, the magnetic field subtotal machine housing part, the effectual shock attenuation effect that has improved, the while can promote the life of linear vibration motor.
Description
Technical field
The utility model relates to linear vibration electric motor correlative technology field, refers in particular to the damping device for linear vibration electric motor.
Background technology
Linear vibration electric motor because of its distinctive brushless structure, long service life, start and dwell time short, vibration sense is obvious, and the features such as profile is unrestricted are more and more subject to the producers such as mobile phone, panel computer, intelligent watch and favor.But inevitably produce contact noise and collision during motor internal vibration, therefore how to reduce contact noise and collision, raising its stability becomes the Important Problems that linear vibration electric motor producer must solve.
Existing linear vibration electric motor comprise motor oscillating part, magnetic field part and housing three part form, its damping modes, only just absorbed by the motor oscillating part of linear vibration electric motor, the gap between magnetic field part and housing three, then often because motor oscillating part, contact between magnetic field part and housing and the contact noise that causes and collision, greatly reduce the damping effect of linear vibration electric motor, also shorten the useful life of this linear vibration electric motor simultaneously.
Utility model content
The utility model there is above-mentioned deficiency to overcome in prior art, provides a kind of good damping effect and the damping device for linear vibration electric motor of long service life.
To achieve these goals, the utility model is by the following technical solutions:
For the damping device of linear vibration electric motor, involving vibrations part, magnetic field part and housing part, the shape of cross section of described oscillating component is convex shape, described oscillating component and magnetic field part are arranged on the inside of housing part, described oscillating component is arranged on the outside of magnetic field part, described oscillating component is provided with damping rubber, is provided with magnetic fluid between described magnetic field part and housing part.This damping is by utilizing damping rubber and magnetic fluid, effectively avoid and absorb the Contact of oscillating component, magnetic field part and housing part and the contact noise caused and collision, effectively raise damping effect, the useful life of linear vibration electric motor can be promoted simultaneously.
As preferably, described housing part comprises upper casing element, lower casing element and conducting element, described upper casing element is connected with lower casing element and forms a seal cavity, and described conducting element is placed in the inside of lower casing element and is connected with magnetic field part.The housing part of sealing can effectively prevent because flowing to the damage causing this linear vibration electric motor and other parts outside magnetic fluid.
As preferably, described magnetic field part comprises fixed cover element, magnet steel element, yoke element and coil part, described coil part is arranged on the center of lower casing element, described conducting element is placed in the outside of coil part and is connected with coil part, described coil part is hollow, one end of described magnet steel element is placed in the inside center place of coil part, the other end of described magnet steel element is arranged on the inside center place of fixed cover element, described yoke element is arranged on one end of magnet steel element and is placed in the inside center place of coil part, described fixed cover element covers the top of coil part and is connected with the outside of coil part, described magnetic fluid is placed between yoke element and lower casing element.Magnet steel element does not contact with coil part with yoke element, the unsettled inside center place at coil part, the action of magnetic rod element and yoke element is driven by the effect of coil part, and magnet steel element can drive fixed cover member motion, thus make oscillating component produce vibration, and the design of magnetic fluid, can effectively prevent magnetic field part and lower casing element from colliding.
As preferably, described oscillating component comprises mass element and flexible member, described flexible member to be arranged on lower casing element and to be placed in the outside of coil part, described mass element is placed in the top of flexible member and is arranged on the outside of fixed cover element, described fixed cover element is placed in the top of flexible member, and described damping rubber is placed on the surface of mass element.The design of damping rubber can effectively prevent mass element and flexible member and upper casing element from colliding.
As preferably, the surface that described damping rubber is distributed in mass element forms layer protecting film after solidification.Damping rubber has the features such as high freedom from vibration, high stability, good weatherability, and can form certain thickness diaphragm at mass element surface after solidification, this diaphragm can play good cushioning effect.
As preferably, the cross section of described mass element is convex shape, described mass element comprises roundlet shell of column and great circle shell of column, one end face of described roundlet shell of column and resilient element contacts, the other end of described roundlet shell of column and an end face junction of great circle shell of column are provided with rounding, and the end face that described great circle shell of column is connected with roundlet shell of column is provided with the chamfer away from flexible member direction.
As preferably, described chamfer is that the end face of great circle shell of column becomes large to the distance of flexible member gradually from the side near the side of roundlet shell of column to great circle shell of column.Due to the structural relation of flexible member, the flexible member part corresponding to side near great circle shell of column is static part, so collide in the space that the structure of design chamfer can avoid flexible member and mass element to be formed between flexible member and mass element like this.
As preferably, described magnetic fluid comprises Magnaglo and liquid, and described Magnaglo is one or more of tri-iron tetroxide, ferrocobalt and cobalt, and described liquid is one or more in oil, water and toluene.In magnetic fluid, Magnaglo makes it be dispersed into stable glue in a liquid, can play good cushioning effect.
As preferably, in described liquid, also comprise interfacial agent.In magnetic fluid, Magnaglo makes it be dispersed into stable glue in a liquid, due to the effect in gravity and magnetic field in order to make Magnaglo not precipitate, noncondensing, so add interfacial agent.
As preferably, the particle diameter of described Magnaglo is 0.01 ~ 0.02 μm.The Magnaglo of 0.01 ~ 0.02 μm of particle diameter is microgranule powder, by effects such as the distinctive Brownian movement of ultramicron, external magnetic field, gravity, centrifugal force, the Magnaglo in magnetic fluid can be made to remain on certain concentration, thus play good cushioning effect.
The beneficial effects of the utility model are: by utilizing damping rubber and magnetic fluid, there is good cushioning effect, coordinate the design of chamfer simultaneously, can effectively avoid and absorb the Contact of oscillating component, magnetic field part and housing part and the contact noise caused and collision, effectively raise damping effect, the useful life of linear vibration electric motor can be promoted simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1. oscillating component, 2. magnetic field part, 3. housing part, 4. upper casing element, 5. lower casing element, 6. conducting element, 7. fixed cover element, 8. magnet steel element, 9. yoke element, 10. coil part, 11. mass elements, 12. flexible members, 13. damping rubbers, 14. magnetic fluids, 15. chamfers.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
In embodiment as described in Figure 1, for the damping device of linear vibration electric motor, involving vibrations part 1, magnetic field part 2 and housing part 3, the shape of cross section of oscillating component 1 is inverted convex shape, oscillating component 1 and magnetic field part 2 are arranged on the inside of housing part 3, oscillating component 1 is arranged on the outside of magnetic field part 2, and oscillating component 1 is provided with damping rubber 13, is provided with magnetic fluid 14 between magnetic field part 2 and housing part 3.
Housing part 3 comprises upper casing element 4, lower casing element 5 and conducting element 6, and upper casing element 4 is connected with lower casing element 5 and forms a seal cavity, and conducting element 6 is placed in the inside of lower casing element 5 and is connected with magnetic field part 2.
Magnetic field part 2 comprises fixed cover element 7, magnet steel element 8, yoke element 9 and coil part 10, coil part 10 is arranged on the center of lower casing element 5, conducting element 6 is placed in the outside of coil part 10 and is connected with coil part 10, coil part 10 is hollow, one end of magnet steel element 8 is placed in the inside center place of coil part 10, the other end of magnet steel element 8 is arranged on the inside center place of fixed cover element 7, yoke element 9 is arranged on one end of magnet steel element 8 and is placed in the inside center place of coil part 10, fixed cover element 7 covers the top of coil part 10 and is connected with the outside of coil part 10, magnetic fluid 14 is placed between yoke element 9 and lower casing element 5.Wherein: magnetic fluid 14 comprises Magnaglo and liquid, Magnaglo is one or more of tri-iron tetroxide, ferrocobalt and cobalt, and the particle diameter of Magnaglo is 0.01 ~ 0.02 μm; Liquid is one or more in oil, water and toluene, also comprises interfacial agent in liquid.
Oscillating component 1 comprises mass element 11 and flexible member 12, flexible member 12 to be arranged on lower casing element 5 and to be placed in the outside of coil part 10, mass element 11 is placed in the top of flexible member 12 and is arranged on the outside of fixed cover element 7, fixed cover element 7 is placed in the top of flexible member 12, and damping rubber 13 is placed on the surface of mass element 11.The surface that damping rubber 13 is distributed in mass element 11 forms layer protecting film after solidification.Wherein: the cross section of mass element 11 is convex shape, mass element 11 comprises roundlet shell of column and great circle shell of column, one end face of roundlet shell of column contacts with flexible member 12, the other end of roundlet shell of column and an end face junction of great circle shell of column are provided with rounding, and the end face that great circle shell of column is connected with roundlet shell of column is provided with the chamfer 15 away from flexible member 12 direction.Chamfer 15 is that the end face of great circle shell of column gradually becomes large near the side of roundlet shell of column to the side of great circle shell of column to the distance of flexible member.
The chamfer 15 of mass element 11 is optimized, namely the end face of great circle shell of column gradually becomes large near the side of roundlet shell of column to the side of great circle shell of column to the distance of flexible member 12, due to the structural relation of flexible member, flexible member 12 part corresponding to side near great circle shell of column is static part, thus collides in the space avoiding flexible member 12 and mass element 11 to be formed between flexible member 12 and mass element 11.Damping rubber 13 is arranged on mass element 11 surface, and it is mainly distributed in, and great circle shell of column is not provided with on the end face of roundlet shell of column, on whole lateral surfaces of roundlet shell of column and on chamfer 15, damping rubber 13 shape is unrestricted; Magnetic fluid 14 is arranged between yoke element 9 and lower casing element 5.Wherein: damping rubber 13 has the features such as high freedom from vibration, high stability, good weatherability, and can form certain thickness diaphragm after solidification on mass element 11 surface, diaphragm can play good cushioning effect, in magnetic fluid 14, Magnaglo makes it be dispersed into stable glue in a liquid, because the effect in gravity and magnetic field does not precipitate to make Magnaglo, noncondensing, add interfacial agent, such as by tri-iron tetroxide, active matter is formed after the scintilla of ferrocobalt makes it disperse in You Heshui, in toluene, add recently the situation that cobalt makes it disperse also have, here Magnaglo refers to the microgranule powder of 0.01 ~ 0.02 μm, by the distinctive Brownian movement of ultramicron, external magnetic field, gravity, the effect such as centrifugal force also can make the Magnaglo in magnetic fluid 14 remain on certain concentration.Utilized by damping rubber 13, cooperation between magnetic fluid 14 and chamfer 15 three, effectively avoid and absorb the Contact of oscillating component 1, magnetic field part 2 and housing part 3 and the contact noise caused and collision, effectively raise damping effect, the useful life of linear vibration electric motor can be promoted simultaneously.
Claims (10)
1. for the damping device of linear vibration electric motor, it is characterized in that, involving vibrations part (1), magnetic field part (2) and housing part (3), the shape of cross section of described oscillating component (1) is convex shape, described oscillating component (1) and magnetic field part (2) are arranged on the inside of housing part (3), described oscillating component (1) is arranged on the outside of magnetic field part (2), described oscillating component (1) is provided with damping rubber (13), magnetic fluid (14) is provided with between described magnetic field part (2) and housing part (3).
2. the damping device for linear vibration electric motor according to claim 1, it is characterized in that, described housing part (3) comprises upper casing element (4), lower casing element (5) and conducting element (6), described upper casing element (4) is connected with lower casing element (5) and forms a seal cavity, and described conducting element (6) is placed in the inside of lower casing element (5) and is connected with magnetic field part (2).
3. the damping device for linear vibration electric motor according to claim 2, it is characterized in that, described magnetic field part (2) comprises fixed cover element (7), magnet steel element (8), yoke element (9) and coil part (10), described coil part (10) is arranged on the center of lower casing element (5), described conducting element (6) is placed in the outside of coil part (10) and is connected with coil part (10), described coil part (10) is hollow, one end of described magnet steel element (8) is placed in the inside center place of coil part (10), the other end of described magnet steel element (8) is arranged on the inside center place of fixed cover element (7), described yoke element (9) is arranged on one end of magnet steel element (8) and is placed in the inside center place of coil part (10), described fixed cover element (7) covers the top of coil part (10) and is connected with the outside of coil part (10), described magnetic fluid (14) is placed between yoke element (9) and lower casing element (5).
4. the damping device for linear vibration electric motor according to claim 3, it is characterized in that, described oscillating component (1) comprises mass element (11) and flexible member (12), described flexible member (12) is arranged on lower casing element (5) and goes up and the outside being placed in coil part (10), described mass element (11) is placed in the top of flexible member (12) and is arranged on the outside of fixed cover element (7), described fixed cover element (7) is placed in the top of flexible member (12), described damping rubber (13) is placed on the surface of mass element (11).
5. the damping device for linear vibration electric motor according to claim 4, is characterized in that, the surface that described damping rubber (13) is distributed in mass element (11) forms layer protecting film after solidification.
6. the damping device for linear vibration electric motor according to claim 4, it is characterized in that, the cross section of described mass element (11) is convex shape, described mass element (11) comprises roundlet shell of column and great circle shell of column, one end face of described roundlet shell of column contacts with flexible member (12), the other end of described roundlet shell of column and an end face junction of great circle shell of column are provided with rounding, and the end face that described great circle shell of column is connected with roundlet shell of column is provided with the chamfer (15) away from flexible member (12) direction.
7. the damping device for linear vibration electric motor according to claim 6, it is characterized in that, the end face that described chamfer (15) is great circle shell of column becomes large to the distance of flexible member gradually from the side near the side of roundlet shell of column to great circle shell of column.
8. the damping device for linear vibration electric motor according to claim 1 or 3, it is characterized in that, described magnetic fluid (14) comprises Magnaglo and liquid, described Magnaglo is one or more of tri-iron tetroxide, ferrocobalt and cobalt, and described liquid is one or more in oil, water and toluene.
9. the damping device for linear vibration electric motor according to claim 8, is characterized in that, also comprises interfacial agent in described liquid.
10. the damping device for linear vibration electric motor according to claim 8, is characterized in that, the particle diameter of described Magnaglo is 0.01 ~ 0.02 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571529.9U CN205017196U (en) | 2015-07-31 | 2015-07-31 | A damping device for linear vibration motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571529.9U CN205017196U (en) | 2015-07-31 | 2015-07-31 | A damping device for linear vibration motor |
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| Publication Number | Publication Date |
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| CN205017196U true CN205017196U (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520571529.9U Active CN205017196U (en) | 2015-07-31 | 2015-07-31 | A damping device for linear vibration motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626302A (en) * | 2018-05-17 | 2018-10-09 | 北京数科技有限公司 | A kind of ray machine damping device |
| CN110719007A (en) * | 2018-07-11 | 2020-01-21 | Mplus株式会社 | Linear vibration motor |
| CN111641323A (en) * | 2020-06-30 | 2020-09-08 | 歌尔股份有限公司 | Vibration device and electronic apparatus |
| CN113394939A (en) * | 2021-07-14 | 2021-09-14 | 浙江省东阳市东磁诚基电子有限公司 | Linear vibration motor |
-
2015
- 2015-07-31 CN CN201520571529.9U patent/CN205017196U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626302A (en) * | 2018-05-17 | 2018-10-09 | 北京数科技有限公司 | A kind of ray machine damping device |
| CN110719007A (en) * | 2018-07-11 | 2020-01-21 | Mplus株式会社 | Linear vibration motor |
| CN110719007B (en) * | 2018-07-11 | 2021-06-29 | Mplus株式会社 | Linear vibration motor |
| CN111641323A (en) * | 2020-06-30 | 2020-09-08 | 歌尔股份有限公司 | Vibration device and electronic apparatus |
| CN113394939A (en) * | 2021-07-14 | 2021-09-14 | 浙江省东阳市东磁诚基电子有限公司 | Linear vibration motor |
| CN113394939B (en) * | 2021-07-14 | 2023-02-28 | 浙江省东阳市东磁诚基电子有限公司 | Linear vibration motor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 322118 Hengdian Industrial Zone, Jinhua, Zhejiang, China (head of bridge), Dongyang Patentee after: Zhejiang city of Dongyang Province east Cheng Electronic Co., Ltd. Address before: 322118 Hengdian Industrial Zone, Jinhua, Zhejiang, China () Patentee before: Zhejiang Dongyang Chengji Electric Motor Co., Ltd. |
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| CP03 | Change of name, title or address |