CN202827723U - Unloading valve of power steering gear - Google Patents
Unloading valve of power steering gear Download PDFInfo
- Publication number
- CN202827723U CN202827723U CN 201220485880 CN201220485880U CN202827723U CN 202827723 U CN202827723 U CN 202827723U CN 201220485880 CN201220485880 CN 201220485880 CN 201220485880 U CN201220485880 U CN 201220485880U CN 202827723 U CN202827723 U CN 202827723U
- Authority
- CN
- China
- Prior art keywords
- steering
- ball pin
- hole
- seatball
- nut
- 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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Abstract
The utility model relates to an unloading valve of a power steering gear and belongs to the technical field of vehicle power steering gears. The unloading valve of the power steering gear comprises a steering gear shell, a steering valve body, a steering nut, a threaded sleeve A, a threaded sleeve B, a seatball A and a seatball B. One end of a through hole of the steering nut is provided with a sliding rod A through the threaded sleeve A and the other end of the through hole of the steering nut is provided with a sliding rod B through the threaded sleeve B. The seatball A is arranged in a through hole of the sliding rod A. The seatball B is arranged in a through hole of the sliding rod B. A spring is arranged in the through hole of the steering nut between the seatball A and the seatball B through a supporting tube. According to the unloading valve of the power steering gear, a through type structure is adopted, processing technology is simple and practical, installable performance and manufacturability of parts are good, an external installation space of the steering gear is not affected, and influence on the parts of a steering system from high oil pressure when direction of an existing vehicle is turned to a limiting position is solved, stability of performance of the steering power gear and a steering oil pump is guaranteed, temperature of oil fluid is reduced, and service life of the steering system is prolonged.
Description
Technical field
The utility model relates to a kind of power steering unloader valve, belongs to the automobile power steering technical field.
Background technology
Power steering is the operating control that utilizes the power of automotive engine to carry out easily, fast turn to.The energy of automotive engine is converted to hydraulic energy by power steerig pump, by power steering hydraulic energy is converted to mechanical energy again, then acts on the tire by a cover mechanical linkage driving device, realizes the turning function of automobile.Along with improving constantly of power steering unit volume output torque, its development will be tending towards high-pressure trend.When reaching the limit of the position, motor turning (can not continue again to have turned to); this moment, the power steering oil pressure reached MTP; power steerig pump is in peak load state, hydraulic efficiency pressure system and keeps for a long time high pressure, as oil pressure not being lowered, can cause the steering oil temperature rise; may burn power steerig pump; even cause steering swivel system to lose efficacy, therefore, install unloader valve additional in deflector; lay down the oil pressure of steering swivel system, most important to protecting the deflector parts and prolonging its life-span.It can guarantee well when power steering touches the motor turning inhibiting device, reduce the oil pressure of steering hydraulic system, avoid the steering hardware of automobile to bear excessive hydraulic coupling, reduce simultaneously the temperature rise of fluid, the service life of Effective Raise power steerig pump and power steering.
Summary of the invention
The purpose of this utility model is: a kind of performance requriements that can guarantee well the steering swivel system parts is provided, improve steering swivel system service life, and simple in structure, can automatically adjust the good power steering unloader valve of relief angle, feasible process, assembling and maintainability.
The utility model is to realize by the following technical solutions above-mentioned purpose:
A kind of power steering unloader valve, it by steering gear housing, turn to valve body, steering nut, screw collar A, screw collar B, ball pin A and ball pin B to consist of, one end of steering gear housing is provided with and turns to valve body, be provided with steering nut in the steering gear housing, it is characterized in that: two ends are equipped with slide bar A and slide bar B by screw collar A and screw collar B respectively in the through hole of steering nut; Being separately installed with ball pin A and ball pin B in the through hole of slide bar A and slide bar B, by support tube spring being installed in the through hole of the steering nut between ball pin A and the ball pin B, captives joint with ball pin B with ball pin A respectively in the two ends of spring; Be separately installed with 0 type rubber seal A and 0 type rubber seal B on the slide bar A of described screw collar A and screw collar B termination and the slide bar B.
The utility model advantage compared with prior art is:
This power steering unloader valve is installed on the deflector inner body steering nut, adopts through structure, and processing technology is simple, feasible; The assembling capacity of parts and manufacturability are good; Do not affect the outside installing space of deflector, solved existing automobile when direction forwards end position to, high oil pressure is on the impact of steering swivel system parts.Guarantee the stable performance of power steering and power steerig pump, reduced the temperature of fluid, improved the service life of steering swivel system.
Description of drawings
Accompanying drawing is structural representation of the present utility model.
Among the figure: 1, steering gear housing; 2, ball pin A; 3, slide bar A; 4, screw collar A; 5,0 type rubber seal A; 6, spring; 7, support tube; 8, steering nut; 9, ball pin B; 10, slide bar B; 11,0 type rubber seal B; 12, screw collar B; 13, valve body; 14, deflector epicoele; 15, deflector cavity of resorption.
The specific embodiment
This power steering unloader valve by steering gear housing 1, turn to valve body 13, steering nut 8, screw collar A4, screw collar B12, ball pin A2 and ball pin B9 to consist of, one end of steering gear housing 1 is provided with and turns to valve body 13, be provided with steering nut 8 in the steering gear housing 1, consist of thus two relatively independent and airtight deflector epicoeles 14 and deflector cavity of resorption 15 in the steering gear housing 1.
Two ends are equipped with slide bar A3 and slide bar B10 by screw collar A4 and screw collar B12 respectively in the through hole of steering nut 8; Screw collar A4 and screw collar B12 are threaded with steering nut 8 respectively, slide bar A3 and slide bar B10 respectively with screw collar A4 and screw collar B12 interference fit.Be separately installed with 0 type rubber seal A5 and 0 type rubber seal B11 on the slide bar A3 of screw collar A4 and screw collar B12 termination and the slide bar B10.
Being separately installed with ball pin A2 and ball pin B9 in the through hole of slide bar A3 and slide bar B10, by support tube 7 spring 6 being installed in the through hole of the steering nut 8 between ball pin A2 and the ball pin B9, captives joint with ball pin B9 with ball pin A2 respectively in the two ends of spring 6.
During work, when beating bearing circle to a direction, the deflector epicoele 14 of power steering is high pressure oil, deflector cavity of resorption 15 is low pressure oil, steering nut 8 moves from right to left, the ball pin B9 of deflector epicoele 14 ends is backed down by high pressure oil, and contact surface and slide bar B10 break away from, and deflector cavity of resorption 15 end ball pin A2 and slide bar A3 contact surface form sealing.After motor tire redirect to end position, the ball pin A2 and the steering gear housing 1 that are contained on the steering nut 8 are collided, ball pin A2 and slide bar A3 contact surface are backed down, deflector epicoele 14 is connected with the oil circuit of deflector cavity of resorption 15, the high-pressure oil flow of deflector this moment epicoele 14 is to deflector cavity of resorption 15, the oil pressure of deflector epicoele 14 quickly falls to certain value, has so just reached the purpose that reduces oil pressure when bearing circle goes to end position by this unloader valve.
When beating bearing circle to reversing sense, the deflector epicoele 14 of power steering is low pressure oil, and deflector cavity of resorption 15 is high pressure oils, and steering nut 8 moves from left to right, deflector cavity of resorption 15
End ball pin A2 is backed down by high pressure oil, ball pin A2 contact surface and slide bar A3 break away from, deflector epicoele 14 end ball pin B9 and slide bar B10 contact surface form sealing, after motor tire redirect to end position, the ball pin B9 and the valve body 13 that are contained on the steering nut 8 are collided, ball pin B9 and slide bar B10 contact surface are backed down, oil circuit between deflector epicoele 14 and the deflector cavity of resorption 15 is connected, the high-pressure oil flow of this moment is to deflector epicoele 14, oil pressure to device cavity of resorption 15 quickly falls to certain value, has so just reached the purpose that reduces oil pressure when bearing circle goes to end position by this unloader valve.
Claims (2)
1. power steering unloader valve, it by steering gear housing (1), turn to valve body (13), steering nut (8), screw collar A(4), screw collar B(12), ball pin A(2) and ball pin B(9) consist of, one end of steering gear housing (1) is provided with and turns to valve body (13), be provided with steering nut (8) in the steering gear housing (1), it is characterized in that: two ends are respectively by screw collar A(4 in the through hole of steering nut (8)) and screw collar B(12) slide bar A(3 is installed) and slide bar B(10); Slide bar A(3) and slide bar B(10) through hole in be separately installed with ball pin A(2) and ball pin B(9), ball pin A(2) and ball pin B(9) between the through hole of steering nut (8) in by support tube (7) spring (6) is installed, the two ends of spring (6) respectively with ball pin A(2) with ball pin B(9) captive joint.
2. power steering unloader valve according to claim 1 is characterized in that: described screw collar A(4) and screw collar B(12) the slide bar A(3 of termination) and slide bar B(10) on be separately installed with 0 type rubber seal A(5) and 0 type rubber seal B(11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220485880 CN202827723U (en) | 2012-09-23 | 2012-09-23 | Unloading valve of power steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220485880 CN202827723U (en) | 2012-09-23 | 2012-09-23 | Unloading valve of power steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202827723U true CN202827723U (en) | 2013-03-27 |
Family
ID=47939492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220485880 Expired - Fee Related CN202827723U (en) | 2012-09-23 | 2012-09-23 | Unloading valve of power steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202827723U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340206A (en) * | 2018-11-05 | 2019-02-15 | 豫北转向系统（新乡）有限公司 | A kind of novel steering device stroke unloading mechanism |
| CN114275078A (en) * | 2021-12-26 | 2022-04-05 | 上海埃维泓屹科技有限公司 | Simple and rapid assembling and adjusting method for steering unloading valve |
-
2012
- 2012-09-23 CN CN 201220485880 patent/CN202827723U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340206A (en) * | 2018-11-05 | 2019-02-15 | 豫北转向系统（新乡）有限公司 | A kind of novel steering device stroke unloading mechanism |
| CN114275078A (en) * | 2021-12-26 | 2022-04-05 | 上海埃维泓屹科技有限公司 | Simple and rapid assembling and adjusting method for steering unloading valve |
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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: 20130327 Termination date: 20150923 |
|
| EXPY | Termination of patent right or utility model |