CN2451445Y - return valve - Google Patents
return valve Download PDFInfo
- Publication number
- CN2451445Y CN2451445Y CN 00262821 CN00262821U CN2451445Y CN 2451445 Y CN2451445 Y CN 2451445Y CN 00262821 CN00262821 CN 00262821 CN 00262821 U CN00262821 U CN 00262821U CN 2451445 Y CN2451445 Y CN 2451445Y
- Authority
- CN
- China
- Prior art keywords
- valve
- hole
- communicated
- adaptor union
- piston
- 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
Links
- 238000000034 method Methods 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 4
- 238000013016 damping Methods 0.000 abstract description 2
- 239000010720 hydraulic oil Substances 0.000 abstract 2
- 239000003921 oil Substances 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Power Steering Mechanism (AREA)
Abstract
A return valve for controlling the steering wheel of vehicle to return to its original position during steering. The return valve consists of a valve A and a valve B which have the same structure. The oil outlets of the hydraulic oil cylinder and the hydraulic oil cylinder are communicated with two oil cylinders of the corresponding power steering gear, the hydraulic damping is small, and the aligning performance is good. The problem of poor aligning ability that especially hydraulic power steering vehicle exists is solved, not only alleviateed driver's fatigue strength, the way sense of steering wheel when still can providing different steering angles simultaneously has improved the manipulation performance of vehicle.
Description
The utility model relates to a kind of control vehicle bearing circle aligning device of return voluntarily in turning to driving process.
At present, the bearing circle aligning torque is to lean on the aligning torque of pivoted wheels on vehicle to pass to bearing circle by steering gear.But the vehicle aligning torque that has is big, and the vehicle aligning torque that has is little, and especially the hydraulic power steerig system is low to the transmission efficiency of bearing circle transmission aligning torque, and car load test return performance is lower than the return performance of standard machinery formula steering system.Still the Steering control class technical products that does not have at present independent control vehicle steering reversal.
The purpose of this utility model is for a kind of control vehicle bearing circle aligning device of return voluntarily in turning to driving process is provided, and it has solved the especially problem of hydraulic power steerig vehicle return performance difference.
The purpose of this utility model is achieved in that Returning valve is made up of structure identical A valve and B valve, and the oil outlet of A valve and B valve is communicated with cooresponding power steering two oil cylinders.Steering system is when freely returning positive status, the turnover oil duct of power steering rotary valve communicates, no high pressure oil enters in the Returning valve, the oil outlet of A valve and B valve is connected, be that power steering two oil cylinders are communicated with, and logical oily cross section can be much larger than the logical oily cross section of power steering rotary valve, and hydraulic damping is little, and return performance is good.Below in conjunction with drawings and Examples the utility model is further specified.
Among the figure: (1) A valve adaptor union, (2) A valve piston, (3) housing, (4) A valve spring, (5) B valve spring, (6) B valve piston, (7) B valve adaptor union.On the A valve adaptor union (1) fuel feed hole a is arranged, on the B valve adaptor union (7) fuel feed hole f is arranged, A valve oil outlet b is arranged on the housing (3), B valve oil outlet c, A, B valve return opening d and A, B valve clear opening e.A valve oil outlet b and B valve oil outlet c are communicated with power steering two oil cylinders respectively.The steering system of power actuated vehicle is in returning positive process, no high pressure oil enters in the Returning valve, a hole, f hole and e hole oil pressure balance, A valve piston (2) is pressed to A valve adaptor union (1) one side under the effect of A valve spring (4), B valve piston (6) is pressed to B valve adaptor union (7) one sides under the effect of B valve spring (5), b, e, c, d hole communicate at this moment, intercept with a, f hole.The vehicle aligning torque acts on the power steering oil cylinder piston, makes it overcome back active draft and moves.Fluid is drained resistance and is directly proportional with b, e, logical oily cross section, c hole, and logical oily cross section increases, and the vehicle return performance significantly improves.
Steering system is in steering procedure, and when a hole entered high pressure oil, the f hole was in low-pressure state.Oil pressure overcomes the pressure of A valve spring (4), and with A valve piston (2) end position that moves right, a hole communicates with the b hole, and the corresponding oil cylinder of A valve enters high pressure oil, and the corresponding oil cylinder of B valve is to c, e, the oil extraction of d hole, and deflector enters the power steering state; When the f hole entered high pressure oil, a hole was in low-pressure state, also can enter the reverse power steering state.
Claims (4)
1. the control vehicle bearing circle Returning valve of return voluntarily in turning to driving process, it is characterized in that: Returning valve is made up of the identical A of structure, B two valves, and every group of valve is made up of housing, pull back spring, piston, adaptor union.
2. Returning valve according to claim 1 is characterized in that: every group of Returning valve assembles pull back spring, piston, adaptor union successively in housing.
3. Returning valve according to claim 1, it is characterized in that: on the A valve adaptor union fuel feed hole a is arranged, on the B valve adaptor union fuel feed hole f is arranged, A valve oil outlet b is arranged on the housing, B valve oil outlet c, A, B valve return opening d and A, B valve clear opening e, A valve oil outlet b and B valve oil outlet c are communicated with power steering two oil cylinders respectively.
4. Returning valve according to claim 1 is characterized in that: the A valve piston is when A valve adaptor union one side pole extreme position, and b hole and e hole are communicated with, and the A valve piston is when the opposite side end position, and a hole and b hole are communicated with; The B valve piston is when B valve adaptor union one side pole extreme position, and c hole and e hole are communicated with, and the B valve piston is when the opposite side end position, and c hole and f hole are communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00262821 CN2451445Y (en) | 2000-11-18 | 2000-11-18 | return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00262821 CN2451445Y (en) | 2000-11-18 | 2000-11-18 | return valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2451445Y true CN2451445Y (en) | 2001-10-03 |
Family
ID=33617964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00262821 Expired - Fee Related CN2451445Y (en) | 2000-11-18 | 2000-11-18 | return valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2451445Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404344C (en) * | 2006-06-13 | 2008-07-23 | 孙晓妮 | Centrifugal valve for automobile steering |
| CN104443017A (en) * | 2014-11-06 | 2015-03-25 | 奇瑞汽车股份有限公司 | Hydraulic steering device of automobile |
-
2000
- 2000-11-18 CN CN 00262821 patent/CN2451445Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404344C (en) * | 2006-06-13 | 2008-07-23 | 孙晓妮 | Centrifugal valve for automobile steering |
| CN104443017A (en) * | 2014-11-06 | 2015-03-25 | 奇瑞汽车股份有限公司 | Hydraulic steering device of automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |