CN201220687Y - Hydraulic power-assisted steering booster apparatus - Google Patents
Hydraulic power-assisted steering booster apparatus Download PDFInfo
- Publication number
- CN201220687Y CN201220687Y CNU2008200354913U CN200820035491U CN201220687Y CN 201220687 Y CN201220687 Y CN 201220687Y CN U2008200354913 U CNU2008200354913 U CN U2008200354913U CN 200820035491 U CN200820035491 U CN 200820035491U CN 201220687 Y CN201220687 Y CN 201220687Y
- Authority
- CN
- China
- Prior art keywords
- check valve
- hydraulic power
- groove
- valve body
- assisted steering
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 25
- 239000010720 hydraulic oil Substances 0.000 abstract 1
- 238000010009 beating Methods 0.000 description 4
- 230000001141 propulsive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Power Steering Mechanism (AREA)
Abstract
The utility model discloses a hydraulic power-assisted steering device, which is characterized in that a groove 2 is formed at a high-pressure hydraulic fluid port end 1; a one-way valve 3 of a guiding device, which can prevent hydraulic oil from flowing reversely, is arranged in the groove 2; and the one-way valve 3 is pressed into the groove 2 and comprises a valve body 4, a valve core 5, a spring 6 and an outer one-way valve body 7 which are connected in sequence. The hydraulic power-assisted steering device with the special structure can ensure that the high-pressure hydraulic fluid enters the high-pressure hydraulic fluid port of the steering engine from the end of the pump, thereby avoiding the reversed flow and lessening the impact of the valve by the left and right movement of the steering engine, so that the oscillating quantity of the steering wheel is reduced and the controllability is strengthened.
Description
Technical field
The utility model relates to a kind of hydraulic power-assisted steering machine.
Background technology
The hydraulic power-assisted steering machine is the mechanism that is applied in the will that is used to realize chaufeur in the automotive field now, at present the fluid-link steering machine is the most a kind of in car and little, light-duty truck, but the steering box of hydraulic booster is because the restriction of the valve system of self promptly realizes the circulation of fluid by the open and close of valve body, and the characteristics that the adverse efficiency of fluid-link steering machine self is very big to steering box influence and the equivalence of fluid self characteristics pressure transmits are when the car that the adopts hydraulic booster system phenomenon that bearing circle can not occur swinging back and forth during at smooth road traveling; When if car travels on the road surface of jolting, because beating of tire will cause the sway of steering box, in order better to realize controlling to car, increase the controllability of chaufeur to car, the amplitude of the amount of swinging back and forth of bearing circle and swing is little when just requiring car to travel, give can controlling party to sensation; For the hydraulic power-assisted steering machine, in the beating of tire, cause moving of steering box in addition, can make fluid reverse flow in the steering swivel system, the high pressure chest that can make fluid flow to steering pump like this phenomenon that flows backwards occur.The reason that produce to flow backwards is that the tooth bar that drives steering box of beating by tire moves the suitable input of such steering box, steering box drives steering column and rotates, the rotation that tubing string and bearing circle are connected the one tubing string finally is presented as the swing of bearing circle, and this " refluence " phenomenon finally causes the swing of bearing circle.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of hydraulic power-assisted steering machine at problems of the prior art, its objective is and reduce of the influence of ground-surface smooth degree bearing circle, improve the controllability of bearing circle, improve traveling comfort and the safety performance driven.
For solving the problems of the technologies described above, the technical solution of the utility model is that this a kind of hydraulic power-assisted steering machine is characterized in that high pressure hydraulic fluid port end is provided with groove, is provided with the guide piece that can prevent the fluid counter-flow in the groove.
Described guide piece is a check valve, and check valve is pressed in the groove.
A kind of hydraulic power-assisted steering machine with above-mentioned special construction has the following advantages: increase check valve and can guarantee that high pressure oil can not produce the refluence phenomenon when the pump end enters the high pressure hydraulic fluid port of steering box in the high pressure hydraulic fluid port of the steering box of the steering swivel system of hydraulic booster, weakened of the impact of the sway of steering box to valve, thereby the oscillating quantity that is embodied on the bearing circle reduces, and increases the controllability of bearing circle.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the structural representation of a kind of hydraulic power-assisted steering machine of the utility model.
Fig. 2 is the partial enlarged drawing of a kind of hydraulic power-assisted steering machine of the utility model.
Shown in Fig. 1 and Fig. 2: 1, high pressure hydraulic fluid port end; 2, groove; 3, check valve; 4, internal check valve valve body; 5, spool; 6, spring; 7, outer check valve valve body.
The specific embodiment
Shown in Figure 1 is a kind of structural representation of hydraulic power-assisted steering machine, it is characterized in that high pressure hydraulic fluid port end 1 is provided with groove 2, be provided with the guide piece that can prevent the fluid counter-flow in the groove 2, described guide piece is a check valve 3, check valve 3 is pressed in the groove 2, described check valve 3 is by internal check valve valve body 4, spool 5, spring 6 and outer check valve valve body 7 are connected in sequence, the spring of the formation check valve of check valve is pressed on the bearing of outer one-way valve housing, spool is fitted on the spring, spool upper end be the internal check valve valve body, the upper end of outer valve body with withhold on the interior valve body; The instrument that check valve press-fits by special use is installed in the high-pressure mouth place, when installation direction need guarantee that fluid enters convertible valve check valve open simultaneously high-pressure mouth install the check valve size will with the size match of check valve.
Check valve 3 compresses high pressure hydraulic fluid port end 1 place that is installed in steering box, has guaranteed in the smooth and easy valve body that enters steering box of fluid; Check valve 3 can stop fluid to flow backwards fully when the fluid counter-flow, when high-voltage fluid enters into the motion that promotes oil cylinder in the steering box oil cylinder by high pressure fuel pipe when turning to, check valve 3 does not play a role, when travelling on the road surface of jolting, cause the swing of steering swivel and beating of suspension for application force of tire by the road surface, the sway that cause steering box can for so contrary propulsive effort of steering box is because the phenomenon that swings back and forth appears in the chain reaction meeting on bearing circle; Mainly be also to drive the swing of the present bearing circle of steering column rotation final body like this owing to rotary valve rotation hydraulic fluid port connection fluid when reverse power drives can flow; When the high-pressure mouth of steering box has check valve 3, when contrary propulsive effort promotion steering rack moves, because the elevated pressure mouth of check valve 3 is in closed condition, fluid can not circulate and cause pressure increase meeting to have a reaction thrust to offset propulsive effort to the piston of steering box making the miles of relative movement of tooth bar reduce like this, being reflected on the bearing circle is exactly that back and forth amplitude of fluctuation reduces, and has realized increasing the effect that check valve reduces the amplitude of bearing circle swing.
Claims (3)
1. a hydraulic power-assisted steering machine is characterized in that high pressure hydraulic fluid port end (1) is provided with groove (2), and groove is provided with the guide piece that can prevent the fluid counter-flow in (2).
2. a kind of hydraulic power-assisted steering machine according to claim 1 is characterized in that described guide piece is check valve (3), and check valve (3) is pressed in the groove (2).
3. a kind of hydraulic power-assisted steering machine according to claim 2, it is characterized in that described check valve (3) is connected in sequence by internal check valve valve body (4), spool (5), spring (6) and outer check valve valve body (7), spring (6) is pressed on the bearing of outer check valve valve body (7), spool (5) is fitted on the spring (6), spool (5) upper end is internal check valve valve body (4), and withhold on the internal check valve valve body (4) upper end of outer check valve valve body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200354913U CN201220687Y (en) | 2008-05-07 | 2008-05-07 | Hydraulic power-assisted steering booster apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200354913U CN201220687Y (en) | 2008-05-07 | 2008-05-07 | Hydraulic power-assisted steering booster apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201220687Y true CN201220687Y (en) | 2009-04-15 |
Family
ID=40574201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200354913U Expired - Fee Related CN201220687Y (en) | 2008-05-07 | 2008-05-07 | Hydraulic power-assisted steering booster apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201220687Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372026A (en) * | 2011-08-30 | 2012-03-14 | 奇瑞汽车股份有限公司 | Novel check valve for hydraulic assistant steering engine |
-
2008
- 2008-05-07 CN CNU2008200354913U patent/CN201220687Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372026A (en) * | 2011-08-30 | 2012-03-14 | 奇瑞汽车股份有限公司 | Novel check valve for hydraulic assistant steering engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090415 Termination date: 20140507 |