CN102359538B - Vehicle collision magnetorheological shock absorber - Google Patents
Vehicle collision magnetorheological shock absorber Download PDFInfo
- Publication number
- CN102359538B CN102359538B CN 201110322217 CN201110322217A CN102359538B CN 102359538 B CN102359538 B CN 102359538B CN 201110322217 CN201110322217 CN 201110322217 CN 201110322217 A CN201110322217 A CN 201110322217A CN 102359538 B CN102359538 B CN 102359538B
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- percussion piston
- damp tube
- clutch release
- slave cylinder
- release slave
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- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a vehicle collision magnetorheological shock absorber. The vehicle collision magnetorheological shock absorber comprises a working cylinder, a percussion piston, a percussion piston rod and at least one damping tube, wherein one end of the percussion piston rod is fixed with one end of the percussion piston; the other end of the percussion piston rod is extended out of the working cylinder through a sliding bearing at one end of the working cylinder; one end of the damping tube is fixed to the bottom of the working cylinder and is communicated with the working cylinder; a sliding piston is arranged at an opening at one end, at the communication position of the damping tube and the working cylinder, of the damping tube; a sealing baffle is arranged at the tail end of the damping tube; a circular hole is formed in the center of the sealing baffle; a sealing diaphragm is fixed in the circular hole; silicone oil is filled between the sliding piston of the damping tube and the sealing diaphragm; a permanent magnet is arranged on the outer circumference of the damping tube; one end of the percussion piston is fixed with the percussion piston rod; the sliding bearing and a sealing ring are arranged on the outer circumference of the damping tube; and magnetorheological fluid is filled in the space of the other end of the percussion piston rod and the bottom of the working cylinder.
Description
Technical field
The invention belongs to a kind of vibration damper, be specifically related to a kind of car crash magneto-rheological vibration damper.
Background technique
Increase along with the owning amount of China's automobile, the automobile probability that bumps also increases greatly, vehicle and occupant are caused damage when bumping in order to reduce automobile, people have researched and developed various car crash vibration dampers, as Chinese patent application number be: " the car crash piston vibration damper " of ZL93245003.2, and Chinese patent application number is: " a kind of car crash protection vibration damper " of ZL200420087894.9; Because " car crash piston vibration damper " provides constant damping force, and " a kind of car crash protection vibration damper " provides elastic damping, so, use these car crash vibration dampers can play a role for automobile reduces vehicle and occupant when bumping infringement, but modern collision theory is thought: in the process that automobile bumps, the damping force that requires the car crash vibration damper to produce will have a process that increases gradually from small to large, that is: when car crash contact beginning, require the car crash vibration damper that a less damping force is provided, and the damping force that requires the car crash vibration damper to produce along with the sustainable development of car crash will increase gradually, just can make collision be down to minimum to causing damage of vehicle and occupant, when therefore, the performance of existing car crash vibration damper is difficult to satisfy automobile and bumps to the requirement of vibration damper and effectiveness in vibration suppression is undesirable.
Summary of the invention
At the relatively poor deficiency of existing car crash vibration damper effectiveness in vibration suppression, the present invention proposes brand-new car crash vibration damper, that is: a kind of car crash magneto-rheological vibration damper.
Technological scheme of the present invention is as follows:
A kind of car crash magneto-rheological vibration damper, it comprises clutch release slave cylinder, percussion piston, percussion piston bar and damp tube, percussion piston places the end in the clutch release slave cylinder, the diameter of percussion piston is less than the internal diameter of clutch release slave cylinder, one end of percussion piston and an end of percussion piston bar are fixed, the other end of percussion piston bar stretches out in clutch release slave cylinder by the sliding bearing of clutch release slave cylinder one end, sliding bearing and seal ring are installed on the excircle of the other end of percussion piston, in the space of the other end of percussion piston and clutch release slave cylinder bottom, have been full of magnetic flow liquid; The bottom of clutch release slave cylinder has been fixed a damp tube at least, and an end that is fixed on the damp tube of clutch release slave cylinder bottom is communicated with clutch release slave cylinder, the oral area that is communicated with damp tube one end at place at damp tube with clutch release slave cylinder is equipped with sliding piston, end at damp tube fixedly has sealed baffle, center at sealed baffle has circular hole, seal membrane is fixedly arranged in circular hole, between the sliding piston of damp tube and seal membrane, be full of silicone oil, excircle at damp tube is equipped with permanent magnet, and damp tube is the tubular shape that is made of non-magnet_conductible material; The external diameter of sliding piston is less than the internal diameter of damp tube, at the excircle of sliding piston seal ring is installed, and the diameter of circular hole is less than the diameter of sliding piston on the damp tube end seal plate washer.
Function of the present invention is achieved in that some little bumps is taking place, when the Impact energy deficiency so that seal membrane when splitting cruelly, the collision magneto-rheological vibration damper does not act on, when beginning bigger bump takes place, after the percussion piston bar is clashed into, the percussion piston bar makes the magnetic flow liquid of percussion piston in clutch release slave cylinder bottom motion and the compression work cylinder, magnetic flow liquid in the clutch release slave cylinder makes the pressure in the clutch release slave cylinder increase after the compression that is subjected to percussion piston, because magnetic flow liquid under the condition in zero magnetic field is the liquid of good fluidity, because liquid is can not be compressed, be communicated with clutch release slave cylinder owing to damp tube simultaneously, so, be subjected to the magnetic flow liquid of percussion piston compression with the sliding piston of pressure by the damp tube oral area, the sliding piston of damp tube and the silicone oil between the seal membrane are delivered on the interior seal membrane of damp tube end seal plate washer circular hole, when holding, seal membrane is unable to bear after the pressure that passes over of bump takes place to split cruelly, magnetic flow liquid in the clutch release slave cylinder will promote the sliding piston of damp tube oral area, sliding piston promotes the silicone oil in the damp tube, silicone oil is flowed out from the circular hole on the damp tube end seal plate washer, magnetic flow liquid in the clutch release slave cylinder begins to enter in the damp tube simultaneously, at this moment, the damping force that is subjected to of percussion piston is less; Subsequently, under the continuation effect of Impact energy, percussion piston is advanced the magnetic flow liquid in the cylinder that continues to push the work forward and the sliding piston that is in the damp tube oral area to the end of damp tube, silicone oil in the damp tube will continue the circular hole outflow from the damp tube end seal plate washer, magnetic flow liquid in the clutch release slave cylinder will continue to enter in the damp tube, owing on the excircle of damp tube permanent magnet is installed, therefore, the magnetic flow liquid that enters in the damp tube uprises by " curing " because of its viscosity under the effect of high magnetic fields, magnetic flow liquid after " curing " will be subjected to bigger damping force when flowing in damp tube, thereby the damping force that percussion piston is subjected to begins to increase; Be pressed into being on the increase of magnetic flow liquid in the damp tube and the magnetic flow liquid of " curing " is constantly increased along with being knocked piston, will make the damping force that percussion piston is subjected to also constantly increase; When the magnetic flow liquid in the clutch release slave cylinder was pushed to the sliding piston in the damp tube at circular hole place on the damp tube end seal plate washer, percussion piston was stop motion, the damping force maximum that percussion piston is subjected to.Hence one can see that: the present invention comes magnetic flow liquid in the compression work cylinder with the Impact energy that automobile produced in when collision by percussion piston, make it constantly enter into the damp tube that permanent magnet is installed on the excircle, make be on the increase (that is being: be on the increase by the magnetic flow liquid of " curing ") that enters into the interior magnetic flow liquid of damp tube, the damping force that magnetic flow liquid flows in damp tube is constantly increased, thereby make percussion piston produce the purpose that a damping force that constantly increases reaches vibration damping.
In order to be applicable to that different automobiles are to the needs of car crash magneto-rheological vibration damper, the present invention also can be by adjusting damp tube quantity, caliber, length, damp tube excircle on the size of magnetic intensity, seal membrane of permanent magnet and thickness etc., come the damping property of car crash magneto-rheological vibration damper of the present invention is changed.Compare with existing car crash vibration damper, because car crash magneto-rheological vibration damper of the present invention can provide a damping force from small to large in the process that automobile bumps, thereby effectiveness in vibration suppression is more desirable.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the A-A sectional view among Fig. 1.
Fig. 3 is the schematic representation of local B among Fig. 1.
Fig. 4 is that the present invention is fixed on the practical application schematic representation on the bumper.
Fig. 5 is the schematic representation of the present invention when the work beginning.
Fig. 6 is the present invention's schematic representation in the course of the work.
Fig. 7 is the schematic representation of end-of-job of the present invention.
Embodiment
Describe structure of the present invention in detail below in conjunction with accompanying drawing:
Referring to Fig. 1, Fig. 2 and Fig. 3, this is a kind of concrete structure of the present invention, a kind of car crash magneto-rheological vibration damper, and it comprises clutch release slave cylinder 5, percussion piston 15, percussion piston bar 1 and damp tube 8; Percussion piston 15 places the end in the clutch release slave cylinder 5, the diameter of percussion piston 15 is less than the internal diameter of clutch release slave cylinder 5, one end of percussion piston 15 and an end of percussion piston bar 1 are fixed, the other end of percussion piston bar 1 stretches out in clutch release slave cylinder 5 by the sliding bearing 2 of clutch release slave cylinder 5 one ends, sliding bearing 3 and seal ring 4 are installed on the excircle of the other end of percussion piston 15, in the space of the other end of percussion piston 15 and clutch release slave cylinder 5 bottoms, have been full of magnetic flow liquid 14; A damp tube 8 has been fixed in the bottom of clutch release slave cylinder 5, and an end that is fixed on the damp tube 8 of clutch release slave cylinder 5 bottoms is communicated with clutch release slave cylinder 5, the oral area that is communicated with damp tube 8 one ends at place at damp tube 8 with clutch release slave cylinder 5 is equipped with sliding piston 13, end at damp tube 8 fixedly has sealed baffle 10, have circular hole 16 at the center of sealed baffle 10, seal membrane 11 is fixedly arranged in circular hole 16, between the sliding piston 13 of damp tube 8 and seal membrane 11, be full of silicone oil 12, excircle at damp tube 8 is equipped with permanent magnet 9, and, damp tube 8 is the tubular shapes that are made of non-magnet_conductible material, the external diameter of sliding piston 13 is less than the internal diameter of damp tube 8, excircle at sliding piston 13 is equipped with seal ring 6 and seal ring 7, and the diameter of the circular hole 16 of damp tube 8 end seal plate washers 10 is less than the diameter of sliding piston 13.
By reference to the accompanying drawings car crash magneto-rheological vibration damper of the present invention is further described now: referring to Fig. 4, the clutch release slave cylinder of two car crash magneto-rheological vibration dampers 24 and 25 is separately fixed on the longeron 22 and longeron 23 of automobile chassis, and two car crash magneto-rheological vibration dampers 24 and 25 percussion piston bar are fixed on the bumper 20; Referring to Fig. 4 and Fig. 1, when automobile bumps, the percussion piston bar 1 that bumper 20 collides magneto-rheological vibration damper 24 and 25 with propelling vehicle makes the magnetic flow liquid 14 of percussion piston 15 in the motion of clutch release slave cylinder 5 bottoms and the compression work cylinder 5, magnetic flow liquid 14 in the clutch release slave cylinder 5 makes the pressure in the clutch release slave cylinder 5 increase after the compression that is subjected to percussion piston 15, because magnetic flow liquid 14 under the condition in zero magnetic field is the liquid of good fluidity, because liquid is can not be compressed, be communicated with clutch release slave cylinder 5 owing to damp tube 8 simultaneously, so, be subjected to the magnetic flow liquid 14 of percussion piston 15 compressions with the sliding piston 13 of pressure by damp tube 8 oral areas, the sliding piston 13 of damp tube 8 and the silicone oil 12 between the seal membrane 11 are delivered on the seal membrane 11 in damp tube 8 end seal plate washers 10 circular holes 16, when seal membrane 11 bears pressure that bump incessantly passes over and after taking place to split cruelly, magnetic flow liquid 14 in the clutch release slave cylinder 5 will promote the sliding piston 13 of damp tube 8 oral areas, the silicone oil 12 that sliding piston 13 promotes in the damp tube 8, silicone oil 12 is flowed out from the circular hole 16 of damp tube 8 end seal plate washers 10, magnetic flow liquid 14 in the clutch release slave cylinder 5 begins to enter in the damp tube 8 and quilt " curing " (referring to magnetic flow liquid 14A of Fig. 5) simultaneously, at this moment, the damping force that is subjected to of percussion piston 15 is less; Subsequently, under the continuation effect of Impact energy, percussion piston 15 is advanced the magnetic flow liquids 14 in the cylinder 5 that continues to push the work forward and the sliding piston 13 that is in damp tube 8 oral areas to the end of damp tube 8, silicone oil 12 in the damp tube 8 will continue to flow out from the circular hole 16 of damp tube 8 end seal plate washers 10, magnetic flow liquid 14 in the clutch release slave cylinder 5 will continue to enter in the damp tube 8, owing on the excircle of damp tube 8 permanent magnet 9 is installed, therefore, the magnetic flow liquid 14 that enters in the damp tube 8 uprises by " curing " (referring to magnetic flow liquid 14A of Fig. 6) because of its viscosity under the effect of high magnetic fields, magnetic flow liquid 14A after " curing " will be subjected to bigger damping force when flowing in damp tube 8, thereby the damping force that percussion piston 15 is subjected to begins to increase; Be pressed into being on the increase of magnetic flow liquid 14 in the damp tube 8 and the magnetic flow liquid 14A of " curing " is constantly increased along with being knocked piston 15, will make the damping force that percussion piston 15 is subjected to also constantly increase; When the magnetic flow liquid 14 in the clutch release slave cylinder 5 was pushed to circular hole 16 places of damp tube 8 end seal plate washers 10 with the sliding piston 13 in the damp tube 8, percussion piston 15 was stop motion, the damping force maximum (referring to Fig. 6) that percussion piston 15 is subjected to.
Claims (2)
1. car crash magneto-rheological vibration damper, it comprises clutch release slave cylinder, percussion piston, percussion piston bar and damp tube, it is characterized in that: described percussion piston places the end in the clutch release slave cylinder, the diameter of percussion piston is less than the internal diameter of clutch release slave cylinder, one end of percussion piston and an end of percussion piston bar are fixed, the other end of percussion piston bar stretches out in clutch release slave cylinder by the sliding bearing of clutch release slave cylinder one end, sliding bearing and seal ring are installed on the excircle of the other end of percussion piston, in the space of the other end of percussion piston and clutch release slave cylinder bottom, have been full of magnetic flow liquid; The bottom of described clutch release slave cylinder has been fixed a damp tube at least, and an end that is fixed on the damp tube of clutch release slave cylinder bottom is communicated with clutch release slave cylinder, the oral area that is communicated with damp tube one end at place at damp tube with clutch release slave cylinder is equipped with sliding piston, end at damp tube fixedly has sealed baffle, center at sealed baffle has circular hole, seal membrane is fixedly arranged in circular hole, between the sliding piston of damp tube and seal membrane, be full of silicone oil, at the excircle of damp tube permanent magnet is installed.
2. a kind of car crash magneto-rheological vibration damper as claimed in claim 1, it is characterized in that: described damp tube is the tubular shape that is made of non-magnet_conductible material; The external diameter of described sliding piston is less than the internal diameter of damp tube, at the excircle of sliding piston seal ring is installed, and the diameter of circular hole is less than the diameter of sliding piston on the damp tube end seal plate washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110322217 CN102359538B (en) | 2011-10-21 | 2011-10-21 | Vehicle collision magnetorheological shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110322217 CN102359538B (en) | 2011-10-21 | 2011-10-21 | Vehicle collision magnetorheological shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102359538A CN102359538A (en) | 2012-02-22 |
| CN102359538B true CN102359538B (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110322217 Expired - Fee Related CN102359538B (en) | 2011-10-21 | 2011-10-21 | Vehicle collision magnetorheological shock absorber |
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| Country | Link |
|---|---|
| CN (1) | CN102359538B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6516926B2 (en) * | 2001-03-16 | 2003-02-11 | Delphi Technologies, Inc. | Piston rod surface finish requirement for MR dampening devices |
| CN2721964Y (en) * | 2004-09-09 | 2005-08-31 | 重庆大学 | Magnetic flowing deforming damper with integrated relative speed sensing function |
| JP2008215406A (en) * | 2007-02-28 | 2008-09-18 | Hitachi Ltd | Magnetic fluid damper |
| CN202251635U (en) * | 2011-10-21 | 2012-05-30 | 谢宁 | Magnetorheological vibration damper for automobile collision |
-
2011
- 2011-10-21 CN CN 201110322217 patent/CN102359538B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6516926B2 (en) * | 2001-03-16 | 2003-02-11 | Delphi Technologies, Inc. | Piston rod surface finish requirement for MR dampening devices |
| CN2721964Y (en) * | 2004-09-09 | 2005-08-31 | 重庆大学 | Magnetic flowing deforming damper with integrated relative speed sensing function |
| JP2008215406A (en) * | 2007-02-28 | 2008-09-18 | Hitachi Ltd | Magnetic fluid damper |
| CN202251635U (en) * | 2011-10-21 | 2012-05-30 | 谢宁 | Magnetorheological vibration damper for automobile collision |
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| Publication number | Publication date |
|---|---|
| CN102359538A (en) | 2012-02-22 |
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| PB01 | Publication | ||
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| ASS | Succession or assignment of patent right |
Owner name: LIU ANCHENG Free format text: FORMER OWNER: XIE NING Effective date: 20130521 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Ancheng Inventor before: Tan Heping Inventor before: Xie Ning Inventor before: Liu Qiang Inventor before: Tan Xiaojing |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: TAN HEPING XIE NING LIU QIANG TAN XIAOJING TO: LIU ANCHENG Free format text: CORRECT: ADDRESS; FROM: 400700 BEIPEI, CHONGQING TO: 408422 NANCHUAN, CHONGQING |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20130521 Address after: In 408422 the first school in Nanchuan District of Chongqing Applicant after: Liu Ancheng Address before: 400700 Chongqing city Beibei District Three Longfeng Village No. 36-18-2 Applicant before: Xie Ning |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20131021 |