CN202144849U - MR vibration damper - Google Patents
MR vibration damper Download PDFInfo
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- CN202144849U CN202144849U CN201120226035U CN201120226035U CN202144849U CN 202144849 U CN202144849 U CN 202144849U CN 201120226035 U CN201120226035 U CN 201120226035U CN 201120226035 U CN201120226035 U CN 201120226035U CN 202144849 U CN202144849 U CN 202144849U
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- piston
- vibration damper
- field coil
- power supply
- cylinder body
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Abstract
The utility model discloses an MR (Magneto Rheological) vibration damper, which comprises a cylinder body, a piston, excitation coils and a power supply, wherein the excitation coils are arranged in the piston and connected with the power supply; axial through holes are formed in the piston; and MR liquid is filled in the cylinder body. Compared with the common hydraulic vibration damper, the MR vibration damper provided by the utility model has the advantages that the common oil liquid in an oil cylinder is replaced with MR liquid, the excitation coils are arranged in the piston, the damping coefficient of the vibration damper is adjusted by changing the rheological properties of the MR liquid via an externally-applied magnetic field, the intensity of the magnetic field is adjusted via voltage, the controllability is good, and the requirements of the different damping systems of a car under the different road conditions are satisfied.
Description
Technical field
The utility model relates to a kind of vibration damper, particularly a kind of magnetorheological vibration damper that is used for automotive suspension.
Background technique
At present, mostly the vibration damper that is adopted on the automotive suspension is can not change the vibration damper damping constant according to traffic information by passive type, and passenger comfort when driving can not get maximumly satisfying on the car.Traditional hydraulic damper realizes cushioning effect through the damping that fluid flows through one-way valve, but hydraulic damper is still passive energy dissipation, has satisfied not the needs of automobile industry development gradually.Have much human to propose various active vibration damper schemes, but all there is complex structure in these schemes, the problem that involves great expense for this reason.
Along with the discovery of magnetic flow liquid, be that fine particle by non-colloid disperses to be dissolved in changing and the suspension of its rheological behaviour of may command with externally-applied magnetic field of forming in the insulation carrier fluid for the research of active vibration damper provides new direction, magnetic flow liquid.Magnetic flow liquid is adding rheological properties generation rapid change under the action of a magnetic field; Can be by the liquid condition viscosity increase at short notice of good fluidity; And present the state of similar solid, and this variation is continuous, reversible, promptly in case after removing magnetic field; Becoming again can flowing liquid, shows good controllability.
Therefore, need a kind of vibration damper that utilizes the magnetic flow liquid characteristic to regulate the vibration damper damping, utilize changes of magnetic field to change the rheological properties of magnetic flow liquid, realize good damping effect.
Summary of the invention
In view of this, the utility model provides a kind of magnetorheological vibration damper, utilizes changes of magnetic field to change the rheological properties of magnetic flow liquid, realizes good damping effect.
The magnetorheological vibration damper of the utility model; Comprise cylinder body, piston, field coil and power supply, said field coil is arranged in the piston and through lead and is connected with power supply, and piston is provided with axial hole; Axial hole axially is uniformly distributed with along piston axis, is full of magnetic flow liquid in the said cylinder body.
As preferably, said field coil circumferentially is provided with around piston axis;
As preferably, to justify along circumferentially annular groove being set in the said axial hole, said field coil is arranged in the annular groove;
As preferably, also comprise piston rod, said piston rod is a hollow-core construction, the lead of field coil passes with power supply in the piston rod and is connected.
As preferably, the cross section of axial hole is circular, square or regular hexagon.
The beneficial effect of the utility model: compare with common hydraulic damper; With conventional oil fluid exchange in the oil cylinder is magnetic flow liquid; Field coil is set in piston, both can realizes that the damping constant of vibration damper was adjustable through the mode that externally-applied magnetic field changes magnetic current and liquid flow variation characteristic, and since magnetic field through voltage adjustment intensity; Have excellent controllability, satisfy the demand of the different damping system of automobile under different road conditions.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the schematic representation of the another kind of structure of the utility model.
Embodiment
Fig. 1 is the structural representation of the utility model, and is as shown in the figure: the magnetorheological vibration damper of present embodiment comprises cylinder body 1, piston 2, field coil 5 and power supply, is full of magnetic flow liquid in the said cylinder body 1; Piston 2 is slidingly matched with cylinder body 1, and piston is divided into upper cylinder half and following cylinder with cylinder body, and piston 2 is provided with axial hole 4; Axial hole can circumferentially be uniformly distributed with along piston axis for a plurality of, and the cross section of through hole generally adopts circle; But shapes such as square, regular hexagon can realize the purpose of the utility model equally; Axial hole is communicated with upper cylinder half and following cylinder, and said field coil 5 is arranged in the piston 2 and through lead and is connected with power supply, forms electromagnetic field; The magnetic line of force of electromagnetic field vertically passes from axial hole; Electromagnetic field can be regulated the magnetic intensity of electromagnetic field according to size of current, thereby the rheological behaviour of control magnetic flow liquid in the axial hole changes the damping constant of vibration damper.
In the present embodiment, said field coil 5 circumferentially is provided with around piston 2 axis, can magnetic field range be covered whole piston, and is easy to process.
Certainly, as shown in Figure 2, the utility model can also realize that promptly circle is along circumferentially being provided with annular groove in axial hole 4 through another kind of structure, and said field coil 5 is arranged in the annular groove; This effect structure is better, but structure is more complicated.
In the present embodiment, also comprise piston rod 3, piston rod 3 and piston 2 be secure fit vertically, and piston rod 3 is hollow-core construction, and the lead of field coil 5 passes in the piston rod 3 to pass with power supply from piston rod 3 tail ends and is connected, and makes structure compact and reasonable more.
In a word, the above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (5)
1. magnetorheological vibration damper; Comprise cylinder body (1) and piston (2), cylinder body (1) and piston (2) are slidingly matched, and it is characterized in that: also comprise field coil (5) and power supply; Said field coil (5) is arranged in the piston (2) and through lead and is connected with power supply; Piston (2) is provided with axial hole (4), and to being uniformly distributed with, said cylinder body is full of magnetic flow liquid in (1) to axial hole (4) along piston (2) axis shaft.
2. magnetorheological vibration damper according to claim 1 is characterized in that: said field coil (5) circumferentially is provided with around piston (2) axis.
3. magnetorheological vibration damper according to claim 1 is characterized in that: circle is along circumferentially being provided with annular groove in the said axial hole (4), and said field coil (5) is arranged in the annular groove.
4. according to claim 2 or 3 described magnetorheological vibration dampers, it is characterized in that: also comprise piston rod (3), said piston rod (3) is a hollow-core construction, and the lead of field coil (5) passes with power supply in the piston rod (3) and is connected.
5. magnetorheological vibration damper according to claim 1 is characterized in that: the cross section of said axial hole (4) is circle, square or regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120226035U CN202144849U (en) | 2011-06-30 | 2011-06-30 | MR vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120226035U CN202144849U (en) | 2011-06-30 | 2011-06-30 | MR vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202144849U true CN202144849U (en) | 2012-02-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120226035U Expired - Fee Related CN202144849U (en) | 2011-06-30 | 2011-06-30 | MR vibration damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202144849U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061287A (en) * | 2013-01-15 | 2013-04-24 | 上海工程技术大学 | Magnetorheological fluid speed bump |
| CN103062278A (en) * | 2013-01-29 | 2013-04-24 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Permanent magnet stay cable magneto-rheological fluid damper with adjustable damping coefficient |
| CN103195858A (en) * | 2013-04-15 | 2013-07-10 | 沈阳航空航天大学 | Magnetorheological buffering unit structure based on impact load and control method thereof |
| CN104404896A (en) * | 2014-12-02 | 2015-03-11 | 四川大学 | Intelligent magneto-rheological deceleration strip |
| CN105065555A (en) * | 2015-07-20 | 2015-11-18 | 常州大学 | Single-rod multistage diffraction active double-control variable damping magneto-rheological damper |
| CN105156567A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod multi-stage diffraction passive dual-control variable-damping magneto-rheological damper |
| CN105156573A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Single-rod multistage diffraction passive double-control variable-damping magnetorheological damper |
| CN105179573A (en) * | 2015-07-19 | 2015-12-23 | 常州大学 | Single-rod multistage-diffraction magneto-rheological damper |
| CN106051026A (en) * | 2016-07-26 | 2016-10-26 | 江西科技学院 | Automobile magneto-rheological damper |
| CN112324744A (en) * | 2020-11-17 | 2021-02-05 | 崔蝶 | Buffer hydraulic oil cylinder |
-
2011
- 2011-06-30 CN CN201120226035U patent/CN202144849U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061287A (en) * | 2013-01-15 | 2013-04-24 | 上海工程技术大学 | Magnetorheological fluid speed bump |
| CN103061287B (en) * | 2013-01-15 | 2015-07-08 | 上海工程技术大学 | Magnetorheological fluid speed bump |
| CN103062278A (en) * | 2013-01-29 | 2013-04-24 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Permanent magnet stay cable magneto-rheological fluid damper with adjustable damping coefficient |
| CN103062278B (en) * | 2013-01-29 | 2015-01-14 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Permanent magnet stay cable magneto-rheological fluid damper with adjustable damping coefficient |
| CN103195858A (en) * | 2013-04-15 | 2013-07-10 | 沈阳航空航天大学 | Magnetorheological buffering unit structure based on impact load and control method thereof |
| CN104404896A (en) * | 2014-12-02 | 2015-03-11 | 四川大学 | Intelligent magneto-rheological deceleration strip |
| CN104404896B (en) * | 2014-12-02 | 2016-03-16 | 四川大学 | Intelligent magneto-rheological deceleration strip |
| CN105179573A (en) * | 2015-07-19 | 2015-12-23 | 常州大学 | Single-rod multistage-diffraction magneto-rheological damper |
| CN105156573A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Single-rod multistage diffraction passive double-control variable-damping magnetorheological damper |
| CN105156567A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod multi-stage diffraction passive dual-control variable-damping magneto-rheological damper |
| CN105065555A (en) * | 2015-07-20 | 2015-11-18 | 常州大学 | Single-rod multistage diffraction active double-control variable damping magneto-rheological damper |
| CN106051026A (en) * | 2016-07-26 | 2016-10-26 | 江西科技学院 | Automobile magneto-rheological damper |
| CN106051026B (en) * | 2016-07-26 | 2018-05-25 | 江西科技学院 | A kind of automobile using MR damper |
| CN112324744A (en) * | 2020-11-17 | 2021-02-05 | 崔蝶 | Buffer hydraulic oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120215 Termination date: 20140630 |
|
| EXPY | Termination of patent right or utility model |