CN1187205C - Linear magnetorheologic liquid damper for vehicle - Google Patents
Linear magnetorheologic liquid damper for vehicle Download PDFInfo
- Publication number
- CN1187205C CN1187205C CNB011135352A CN01113535A CN1187205C CN 1187205 C CN1187205 C CN 1187205C CN B011135352 A CNB011135352 A CN B011135352A CN 01113535 A CN01113535 A CN 01113535A CN 1187205 C CN1187205 C CN 1187205C
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- CN
- China
- Prior art keywords
- magnetic
- guiding loop
- piston
- coil
- magnetic guiding
- 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 - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a damping device for vehicles and a magnetic rheologic fluid application technique. The device comprises a hydraulic cylinder body in a hydraulic damper and a piston, wherein an excitation ring component composed of a magnetic conductive ring and non-magentic conductive rings on both sides is arranged on a piston rod, magnetic rheological fluid is put in a gap between the excitation ring component and the inner wall surface of the cylinder body, a groove winding a coil is arranged in the middle of the magnetic conductive ring, an insulation adhesive layer is coated on the outer surface of the coil, a small hole for a cable wire to penetrate is arranged at the surface of the groove of the magnetic conductive ring, and the small hole is communicated with a center hole of the piston rod. When currents pass through the coil, the magnetic rheological fluid is quickly solidified for the action of a magnetic field, and the damper has controllable damping force. The different rheological properties of the magnetic rheological fluid can be obtained immediately by changing exciting currents in a control circuit, the present invention is favorable to realize self-adaptive control, and an optimal damping effect can be achieved.
Description
The present invention relates to the shock absorption device of vehicle, also relate to the magnetic flow liquid The Application of Technology.
The cushioning ability of vehicle is one of important technology index that characterizes vehicle performance.Therefore, all be provided with the bumper of cushioning effect on the various vehicles.In the prior art, the fluid pressure type damping is a kind of structure the most commonly used.This structure mainly is to make the back and forth movement of positive and negative two different directions by the retardance piston in hydraulic cylinder, reaches the purpose of damping with supporting spring.Be provided with in the both sides of this piston head and flow for liquid and by the passage of the cover plate control of band spring.In compression stroke, the damping liquid that spring bumper cover is head-on brought backs down, and the cross section that liquid is passed through becomes big, and dumping force reduces.Simultaneously, on piston head, also be provided with an aperture, when the pressure of piston head both sides does not wait, then liquid can slowly flow to opposite side from the high side of pressure, to keep balance, in reduction process, because spring leaf cuts out cover plate, damping liquid only can flow to opposite side by the aperture on the piston head.This structure makes traditional damper can distinguish the positive and negative stroke of piston, so that more suitable dumping force to be provided; But the damping force characteristics of this damper can not be made corresponding variation according to the difference of soruce of vibration characteristic (as amplitude, vibration phase).
The objective of the invention is to,, provide a kind of linear magnetorheologic liquid damper that can be applicable to that vehicle uses, utilize the performance of magnetic flow liquid, improve the self adaptation cushioning ability of vehicle at the deficiencies in the prior art.
Purpose of the present invention is realized by following mode.
The vehicle linear magnetorheologic liquid damper that is used for of the present invention, comprise the hydraulic cylinder and the piston that use in the existing fluid pressure type damper, this piston is made of head and piston rod, piston crown is provided with and is used for mobile for liquid aperture and elastic component, be loaded with magnetic flow liquid in the cylinder body, it is characterized in that, on described piston rod, be provided with excitatory ring assemblies, this assembly is made up of at the non-magnetic guiding loop of described magnetic guiding loop both sides a magnetic guiding loop and tipping, in the periphery of magnetic guiding loop and non-magnetic guiding loop and the gap between the inboard wall of cylinder block face, be equipped with magnetic flow liquid, the magnetic guiding loop middle part is provided with groove, the coil of connecting with external control circuit installs around in this groove, scribble the insulation glue-line on the outside face of this coil, on the magnetic guiding loop groove surfaces, be provided with aperture, the centre hole of this hole and piston rod is connected, and the cable of connecting coil passes this hole and guides in the exterior control circuit.
The vehicle linear magnetorheologic liquid damper that is used for of the present invention, when passing through electric current in the coil, between magnetic guiding loop inside, magnetic conduction anchor ring, magnetic flow liquid and inboard wall of cylinder block, form magnetic loop, class is solidified because magnetic field acts on to make the magnetic flow liquid that is between magnetic conduction anchor ring and the cylinder body, thereby makes damper have the dumping force of the foreign field of being subjected to control.When the magnitude of current of control circuit changed, the size of magnetic field force also changed thereupon, made the state of cure difference of magnetic flow liquid, and then the motion to piston rod produces different dumping forces, makes it have damping effect.Because the rheological property of magnetic flow liquid is subjected to the control of magnetic field size, as long as change the exciting current in the control circuit, will obtain the different rheological property of magnetic flow liquid at once, make the damper that constitutes thus can realize adaptive control, and can reach best damping effect.
The linear magnetorheologic liquid damper that is used for vehicle of the present invention can be conveniently used in various automobiles or the various motor bike, and it is simple in structure, compact, and is easy to process.
Be further described below by embodiment and accompanying drawing thereof.
Fig. 1 is a kind of example structure scheme drawing of the present invention.
Among the figure, 1 is cylinder body.2 is piston head, and 3 is spring leaf, as prior art, and this piston head and cylinder body free-running fit, and be provided with aperture and the passage that prevents the sealing arrangement that leaks and be used for balanced hydraulic.4 is piston rod, and the copper ring 9 and the magnetic guiding loop 6 of non-magnetic conduction all are sleeved on the piston rod, and are located by the boss on the piston rod.The bore area of the copper ring 5 of non-magnetic conduction is provided with screw thread, screw thread fit on it and the piston rod screws this screw thread, can make closed contact between 5,6,9 threes, on the contact surface of two copper rings 5,9 and magnetic guiding loop 6, also scribble adhesives, then make the three closely be linked to be an integral body.Fluted on the periphery of magnetic guiding loop 6, conductive coil 7 installs around herein, scribbles insulation glue-line 8 at the outside face of this coil.Be provided with aperture 12 on the magnetic guiding loop groove surface, two leads 10 of drawing from coil are through the control circuit 11 of centre hole outside cylinder body of this hole and piston rod.
In the present embodiment, when passing through electric current in control circuit conducting, the coil, then in magnetic guiding loop 6, form magnetic loop between magnetic flow liquid and the inboard wall of cylinder block, make the magnetic flow liquid class curing rapidly under the effect of magnetic field that is between magnetic conduction anchor ring and the cylinder body, the flowing power in the magnetic flow liquid is weakened, form chain thing or column, resistance to shear strengthens, its result makes the corresponding increase of the suffered dumping force of piston motion, and electric current is big more in the coil 7, and then its dumping force is big more.In the piston motion process, the piston head role is identical with role in conventional damper, that is: do in the compression stroke process at piston, the spring leaf 3 that is pressed on the passage is backed down, the magnetic flow liquid on piston head right side flows to the left side from this passage, piston head provides than slight drag piston motion; Do in the drawing process at piston, spring leaf is closed, magnetic flow liquid only from the piston head aperture pass through, piston head provides big resistance to piston motion.Because above-mentioned two kinds of damper mechanisms have an effect simultaneously, this damper can be the additional a kind of controlled dumping force by the magnetic rheology effect generation of bumper on stoste is pressed the basis of dumping force.
Claims (1)
1. linear magnetorheologic liquid damper that is used for vehicle, comprise the hydraulic cylinder and the piston that use in the existing fluid pressure type damper, this piston is made of head and piston rod, piston crown is provided with and is used for mobile for liquid aperture and elastic component, be loaded with magnetic flow liquid in the cylinder body, it is characterized in that, on described piston rod, be provided with excitatory ring assemblies, this assembly is made up of at the non-magnetic guiding loop of described magnetic guiding loop both sides a magnetic guiding loop and tipping, in the periphery of magnetic guiding loop and non-magnetic guiding loop and the gap between the inboard wall of cylinder block face, be equipped with magnetic flow liquid, be provided with groove at the magnetic guiding loop middle part, the coil of connecting with external control circuit installs around in this groove, scribble the insulation glue-line on the outside face of this coil, on the magnetic guiding loop groove surfaces, be provided with aperture, the centre hole of this hole and piston rod is connected, and the cable of connecting coil passes this hole and guides in the exterior control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011135352A CN1187205C (en) | 2001-04-13 | 2001-04-13 | Linear magnetorheologic liquid damper for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011135352A CN1187205C (en) | 2001-04-13 | 2001-04-13 | Linear magnetorheologic liquid damper for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1381361A CN1381361A (en) | 2002-11-27 |
| CN1187205C true CN1187205C (en) | 2005-02-02 |
Family
ID=4660254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011135352A Expired - Fee Related CN1187205C (en) | 2001-04-13 | 2001-04-13 | Linear magnetorheologic liquid damper for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1187205C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371623C (en) * | 2004-05-28 | 2008-02-27 | 重庆大学 | Magnetorheological suspensions damping device for automobile suspension system |
| CA2637511C (en) * | 2006-02-09 | 2012-05-22 | Central Research Institute Of Electric Power Industry | Fluid damper |
| KR101184283B1 (en) * | 2010-11-30 | 2012-09-21 | 현대자동차주식회사 | A damping-control device filled with the Magnetorheological fluid and an engine mount equipped with thereof |
| KR101298267B1 (en) * | 2011-08-01 | 2013-08-22 | 현대자동차주식회사 | Orifice-plate for an engine-mount filled with the Magnetorheological fluid |
| CN107657906A (en) * | 2017-11-16 | 2018-02-02 | 岭南师范学院 | A kind of blind person based on magnetic fluid reads smart electronicses book and its display methods |
| CN111152616B (en) * | 2020-01-08 | 2022-09-27 | 合肥工业大学 | Magnetorheological damping suspension and measurement and control method thereof |
-
2001
- 2001-04-13 CN CNB011135352A patent/CN1187205C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1381361A (en) | 2002-11-27 |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |