CN204312796U - A kind of pressure relief valve of automobile power steering - Google Patents
A kind of pressure relief valve of automobile power steering Download PDFInfo
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- CN204312796U CN204312796U CN201420789724.4U CN201420789724U CN204312796U CN 204312796 U CN204312796 U CN 204312796U CN 201420789724 U CN201420789724 U CN 201420789724U CN 204312796 U CN204312796 U CN 204312796U
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- steel ball
- guide pin
- pin bushing
- power steering
- spring
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Abstract
The utility model provides a kind of pressure relief valve of automobile power steering, it is characterized in that: the described spring the other end is fixed on and supports on guide pin bushing, described valve body is divided into spring chamber and steel ball chamber by described support guide pin bushing, described steel ball is provided with between described support guide pin bushing and described oil inlet hole, described support guide pin bushing one end is provided with the spring fixing groove of fixing described spring, the described support guide pin bushing the other end is provided with the steel ball fixed groove of fixing described steel ball, and described support guide pin bushing sidewall is provided with spring terminal little O type cushion rubber and steel ball end little O type cushion rubber.The utility model device adopts and supports the structural imperfection that guide pin bushing solves existing pressure relief valve, the pressure stability value of automobile power steering is improved, cracking pressure and pressure unloading difference reduce further, spring terminal little O type cushion rubber and steel ball end little O type cushion rubber is used to reduce interior leak rate, more efficiently solve the pressure release problem of pressure relief valve, the reliability of automobile power steering is improved further.
Description
Technical field
The utility model relates to automobile power steering technical field, especially a kind of pressure relief valve of automobile power steering.
Background technique
Pressure relief valve controls automobile power steering pressure, prevents power steering gear oil temperature from rising sharply, cause oil pump scaling loss.Its function is setting power steering gear system safety pressure value, and when system pressure maintains safety pressure interval, not off-load, with keeping system output torque, when " pressure " exceeds specified value, namely enters the state of off-load, the direct oil sump tank of pressure oil.
China Patent No. is ZL201120364392.1(New-type safety valve), a kind of pressure relief valve is disclosed, its steel ball supporting and location shim form when producing, spring force transmits and stablely with it adopts elasticity guide pin bushing to realize, in valve, oil inlet hole φ 4.2 can not meet with the relation of oil leak hole φ 3 and opens, unload Pressure characteristics requirement, because structural feature causes process consistency poor, and extreme influence pressure relief valve precision, the difference of its cracking pressure and pressure unloading controls at 2.5MPa, so need a kind of pressure stability badly, open with to unload pressure difference little, the pressure relief valve that interior leak rate is low.
Model utility content
The purpose of this utility model is the problems referred to above existed for existing technology, provide a kind of pressure relief valve of automobile power steering, the utility model device solves the structural imperfection of existing pressure relief valve, makes automobile power steering pressure stability value control at ± 0.25MPa; Cracking pressure and pressure unloading difference are less than 0.8 MPa; Interior leak rate is less than 50mL/min.
For this reason, the technical solution that the utility model is taked is:
A kind of pressure relief valve of automobile power steering, comprise valve seat, valve body, spring, steel ball, large O type cushion rubber, pressure adjusting pad, described seat bottom portion is provided with power steering gear fixed hole, described valve seat wall is provided with valve base sealing groove, described large O type cushion rubber is fixed in described valve base sealing groove, described valve body is fixed on described valve seat, the end of described valve body is provided with oil leak hole, the top of described valve end is provided with oil inlet hole, described valve body and described valve seat joint are provided with pressure adjusting pad, described spring one end is fixed on described pressure adjusting pad, the described spring the other end is fixed on and supports on guide pin bushing, described valve body is divided into spring chamber and steel ball chamber by described support guide pin bushing, described steel ball is provided with between described support guide pin bushing and described oil inlet hole, described support guide pin bushing one end is provided with the spring fixing groove of fixing described spring, the described support guide pin bushing the other end is provided with the steel ball fixed groove of fixing described steel ball, described support guide pin bushing sidewall is provided with spring terminal little O type cushion rubber and steel ball end little O type cushion rubber.
As preferred further, described valve seat is provided with guide pillar.
As preferred further, described body wall is provided with exhaust port.
As preferred further, described exhaust port is less than described support guide pin bushing to described pressure adjusting pad minimum range to the distance of described pressure adjusting pad.
As preferred further, described support guide pin bushing is H type.
As preferred further, described spring terminal little O type cushion rubber is between described spring fixing groove and described steel ball fixed groove 604.
As preferred further, described steel ball end little O type cushion rubber is positioned on described steel ball fixed groove sidewall.
As preferred further, the area of contour of described spring fixing groove is greater than the area of described steel ball fixed groove.
As preferred further, the centre of sphere of described steel ball and the center of described oil inlet hole are on the same line.
The beneficial effect of technique scheme is:
(1) valve seat of the utility model device is provided with guide pillar, makes the elasticity stable of spring, makes the pressure stability value of spring be less than ± 0.5MPa;
(2) valve body of the utility model device is provided with exhaust port, exhaust port is less than support guide pin bushing to pressure adjusting pad minimum range to the distance of pressure adjusting pad, when spring chamber is compressed rapidly, the gas pressure of spring chamber increases suddenly, if air is not discharged in spring chamber, is converted into elastic force by during compressed-air actuated pressure compression, improves safety pressure value, thus make oil temperature exceed automobile power steering tolerance value, cause automobile power steering to damage;
(3) the utility model device is provided with support guide pin bushing, support guide pin bushing is made to substitute elasticity guide pin bushing of the prior art and steel ball stabilizing spacer, supporting guide pin bushing makes automobile power steering pressure stability value control at ± 0.25MPa, cracking pressure and pressure unloading difference are less than 0.8 MPa, and interior leak rate is less than 50mL/min;
(4) the utility model device adopts and supports the structural imperfection that guide pin bushing solves existing pressure relief valve, the pressure stability value of automobile power steering is improved, cracking pressure and pressure unloading difference reduce further, spring terminal little O type cushion rubber and steel ball end little O type cushion rubber is used to reduce interior leak rate, more efficiently solve the pressure release problem of pressure relief valve, the reliability of automobile power steering is improved further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pressure relief valve of automobile power steering of the present utility model.
In figure: 1, valve seat; 2, valve body; 3, spring; 4, steel ball; 5, large O type cushion rubber; 6, guide pin bushing is supported; 7, pressure adjusting pad; 101, power steering gear fixed hole; 102, valve base sealing groove; 103, guide pillar; 201, spring chamber; 202, steel ball chamber; 203, exhaust port; 204, oil leak hole; 205, oil inlet hole; 601, spring fixing groove; 602, spring terminal little O type cushion rubber; 603, steel ball end little O type cushion rubber; 604, steel ball fixed groove.
Embodiment
For making feature of the present utility model and advantage clearly, be described below in conjunction with specific embodiment.
As shown in Figure 1, a kind of pressure relief valve of automobile power steering, comprise valve seat 1, valve body 2, spring 3, steel ball 4, large O type cushion rubber 5, pressure adjusting pad 7, power steering gear fixed hole 101 is provided with bottom described valve seat 1, described valve seat 1 sidewall is provided with valve base sealing groove 102, described large O type cushion rubber 5 is fixed in described valve base sealing groove 102, described valve body 2 is fixed on described valve seat 1, the end of described valve body 2 is provided with oil leak hole 204, the top of described valve body 2 end is provided with oil inlet hole 205, described valve body 2 is provided with pressure adjusting pad 7 with described valve seat 1 joint, described spring 3 one end is fixed on described pressure adjusting pad 7, described spring 3 the other end is fixed on and supports on guide pin bushing 6, described valve body 2 is divided into spring chamber 201 and steel ball chamber 202 by described support guide pin bushing 6, described steel ball 4 is provided with between described support guide pin bushing 6 and described oil inlet hole 205, described support guide pin bushing 6 one end is provided with the spring fixing groove 601 of fixing described spring 3, described support guide pin bushing 6 the other end is provided with the steel ball fixed groove 604 of fixing described steel ball 4, described support guide pin bushing 6 sidewall is provided with spring terminal little O type cushion rubber 602 and steel ball end little O type cushion rubber 603.
In the present embodiment, described valve seat 1 is provided with guide pillar 103, if during spring 3 forced compression, do not have guide pillar 103, the elastic force of spring 3 is decomposed by outside power, and the elastic force of spring 3 occurs unstable, but when there is guide pillar 103, the elasticity stable of spring 3, makes the pressure stability value of spring 3 be less than ± 0.5MPa.
In the present embodiment, described valve body 2 sidewall is provided with exhaust port 203, when spring chamber 201 is compressed rapidly, the gas pressure of spring chamber 201 increases suddenly, if air is not discharged in spring chamber 201, is converted into elastic force by during compressed-air actuated pressure compression, improves safety pressure value, thus make oil temperature exceed automobile power steering tolerance value, cause automobile power steering to damage.
In the present embodiment, described exhaust port 203 is less than described support guide pin bushing 6 to described pressure adjusting pad 7 minimum range to the distance of described pressure adjusting pad 7, when spring 3 reaches minimum length, support guide pin bushing 6 also to move along valve body 2, the annular wall supporting the spring fixing groove 601 of guide pin bushing 6 can not block exhaust port 203, make be discharged by pressurized air, safety pressure value can not be affected.
In the present embodiment, described support guide pin bushing 6 is H type, described spring terminal little O type cushion rubber 602 is between described spring fixing groove 601 and described steel ball fixed groove 604, described steel ball end little O type cushion rubber 603 is positioned on described steel ball fixed groove 604 sidewall, the area of contour of described spring fixing groove 601 is greater than the area of described steel ball fixed groove 604, make spring 3 can stablize flexible along guide pillar 103 and spring fixing groove 601, elasticity stable, makes automobile power steering pressure stability value be ± 0.25MPa; Cracking pressure and pressure unloading difference are less than 0.8 MPa; Interior leak rate is less than 50mL/min, and the elastic force response degree of spring 3 is high.
In the present embodiment, on the same line, when making the work of steel ball 4, stability is better for the centre of sphere of described steel ball 4 and the center of described oil inlet hole 205.
During use, pressure relief valve is connected with automobile power steering by power steering gear fixed hole 101, valve body 2 is implanted in automobile power steering oil circuit, when pressure in oil circuit is greater than safety pressure value, steel ball 4 moves to spring chamber 201, high pressure oil in oil circuit enters oil leak hole 204 by oil inlet hole 205 and carries out off-load, and high pressure oil is through automobile power steering bypass oil sump tank; When pressure in oil circuit is less than safety pressure value, steel ball 4 and oil inlet hole 205 form sealing strip, maintain automobile power steering working pressure.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in protection domain of the present utility model.
Claims (9)
1. the pressure relief valve of an automobile power steering, comprise valve seat, valve body, spring, steel ball, large O type cushion rubber, pressure adjusting pad, described seat bottom portion is provided with power steering gear fixed hole, described valve seat wall is provided with valve base sealing groove, described large O type cushion rubber is fixed in described valve base sealing groove, described valve body is fixed on described valve seat, the end of described valve body is provided with oil leak hole, the top of described valve end is provided with oil inlet hole, described valve body and described valve seat joint are provided with pressure adjusting pad, described spring one end is fixed on described pressure adjusting pad, it is characterized in that: the described spring the other end is fixed on and supports on guide pin bushing, described valve body is divided into spring chamber and steel ball chamber by described support guide pin bushing, described steel ball is provided with between described support guide pin bushing and described oil inlet hole, described support guide pin bushing one end is provided with the spring fixing groove of fixing described spring, the described support guide pin bushing the other end is provided with the steel ball fixed groove of fixing described steel ball, described support guide pin bushing sidewall is provided with spring terminal little O type cushion rubber and steel ball end little O type cushion rubber.
2. the pressure relief valve of automobile power steering according to claim 1, is characterized in that: described valve seat is provided with guide pillar.
3. the pressure relief valve of automobile power steering according to claim 1, is characterized in that: described body wall is provided with exhaust port.
4. the pressure relief valve of automobile power steering according to claim 3, is characterized in that: described exhaust port is less than described support guide pin bushing to described pressure adjusting pad minimum range to the distance of described pressure adjusting pad.
5. the pressure relief valve of automobile power steering according to claim 1, is characterized in that: described support guide pin bushing is H type.
6. the pressure relief valve of automobile power steering according to claim 1, is characterized in that: described spring terminal little O type cushion rubber is between described spring fixing groove and described steel ball fixed groove 604.
7. the pressure relief valve of automobile power steering according to claim 1, is characterized in that: described steel ball end little O type cushion rubber is positioned on described steel ball fixed groove sidewall.
8. the pressure relief valve of automobile power steering according to claim 1, is characterized in that: the area of contour of described spring fixing groove is greater than the area of described steel ball fixed groove.
9. the pressure relief valve of automobile power steering according to claim 1, is characterized in that: the centre of sphere of described steel ball and the center of described oil inlet hole are on the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420789724.4U CN204312796U (en) | 2014-12-15 | 2014-12-15 | A kind of pressure relief valve of automobile power steering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420789724.4U CN204312796U (en) | 2014-12-15 | 2014-12-15 | A kind of pressure relief valve of automobile power steering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312796U true CN204312796U (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420789724.4U Active CN204312796U (en) | 2014-12-15 | 2014-12-15 | A kind of pressure relief valve of automobile power steering |
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| Country | Link |
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| CN (1) | CN204312796U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927741A (en) * | 2016-07-06 | 2016-09-07 | 成都航天烽火精密机电有限公司 | Pressure reducing valve for high-pressure gas |
| CN112212016A (en) * | 2019-07-12 | 2021-01-12 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
-
2014
- 2014-12-15 CN CN201420789724.4U patent/CN204312796U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927741A (en) * | 2016-07-06 | 2016-09-07 | 成都航天烽火精密机电有限公司 | Pressure reducing valve for high-pressure gas |
| CN112212016A (en) * | 2019-07-12 | 2021-01-12 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Pressure safety valve of automotive power steering gear Effective date of registration: 20180402 Granted publication date: 20150506 Pledgee: Ya'an Rural Commercial Bank branch Yucheng Limited by Share Ltd Pledgor: Sichuan Hang Qing Machinery Manufacturing Co., Ltd. Registration number: 2018510000036 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210414 Granted publication date: 20150506 Pledgee: Ya'an rural commercial bank Limited by Share Ltd. Yucheng sub branch Pledgor: SICHUAN HANGQING MACHINERY MANUFACTURING Co.,Ltd. Registration number: 2018510000036 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |