CN202754021U - Piston guide sleeve for vehicle steering gear - Google Patents
Piston guide sleeve for vehicle steering gear Download PDFInfo
- Publication number
- CN202754021U CN202754021U CN 201220434231 CN201220434231U CN202754021U CN 202754021 U CN202754021 U CN 202754021U CN 201220434231 CN201220434231 CN 201220434231 CN 201220434231 U CN201220434231 U CN 201220434231U CN 202754021 U CN202754021 U CN 202754021U
- Authority
- CN
- China
- Prior art keywords
- piston
- piston guide
- orienting sleeve
- guide sleeve
- sleeve body
- 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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- Power Steering Mechanism (AREA)
- Actuator (AREA)
Abstract
The utility model provides a piston guide sleeve for a vehicle steering gear, belongs to the technical field of machinery and solves the problems that existing piston guide sleeves for vehicle steering gears are poor in sealing effect and prone to leak oil. The piston guide sleeve for the vehicle steering gear comprises a guide sleeve body, a piston rod penetrates through the guide sleeve body, the outer side wall of the guide sleeve body is in close contact with the inner wall of a hydraulic cylinder body, a ring-shaped seal groove is mounted on the outer side wall of the guide sleeve body, and a sealing element is arranged on the ring-shaped seal groove. The piston guide sleeve for the vehicle steering gear has the advantages of being simple in structure, good in sealing effect and the like.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of automobile steering device, relates in particular to a kind of piston guide cover of automobile steering device.
Background technology
Steering swivel system is one of important composition system of automobile.Steering box is as the part of steering swivel system, to the irreplaceable effect that turned in the automobile normal running.The pinion and-rack hydraulic power-assist steering system is widely used a kind of, is provided with the piston guide cover in its hydraulic cylinder part, and piston rod passes the piston guide cover, is fixed with piston on the piston rod, thereby piston is fixed in the hydraulic cylinder.Piston is divided into different pressure spans with hydraulic actuating cylinder, can alternately pressurize or hold-off pressure in these pressure spans.The external leakage of hydraulic actuating cylinder generally has 3 kinds of situations: the one, along the leakage of oil between sealing in piston rod and the orienting sleeve; The 2nd, along the leakage of oil between cylinder barrel and orienting sleeve outer gland sealing; The 3rd, the leakage of oil that the orienting sleeve of casting has the defectives such as blow hole, sand holes and Suo Song to cause.
In order to address the above problem, people have passed through long-term exploration, have proposed various settling modes.A kind of piston guiding sleeve structure of automobile steering box [application number: 201020234106.5 is disclosed such as Chinese patent; Notification number: CN201610167U], it comprises piston bush orienting sleeve body, piston guide cover body and seal ring contact position are dentalation.This structure can increase the snap-in force of the seal ring between piston guide cover and the piston rod, increases sealing effectiveness, has reduced preferably the Leakage between piston rod and the piston guide cover.
Yet, above-mentioned piston guiding sleeve structure of automobile steering box has only solved the sealing problem between piston guide cover and the pilot bar, and it is still unresolved for the sealing problem between piston guide cover and the cylinder body of hydraulic oil cylinder, therefore in the course of the work, still Leakage can occur between cylinder body of hydraulic oil cylinder and the piston guide cover, thereby cause the waste of resource.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist for prior art, has proposed a kind of simple in structure, piston guide cover of solving piston guide cover and the automobile steering device of hydraulic cylinder cylinder body seal problem.
The purpose of this utility model can realize by following technical proposal: a kind of piston guide cover of automobile steering device, comprise the orienting sleeve body, the orienting sleeve body is equipped with piston rod, the lateral wall of orienting sleeve body and hydraulic cylinder inboard wall of cylinder block close contact, it is characterized in that, the lateral wall of described orienting sleeve body has an annular seal groove, and described annular seal groove is provided with sealing member.
The piston guide cover is fixed in the cylinder body of hydraulic ram, the lateral wall of piston guide cover and the inboard wall of cylinder block close contact of hydraulic ram, and the piston rod that is fixed with piston then passes the body of piston guide cover.By offering annular seal groove and place sealing member at annular seal groove at the orienting sleeve lateral wall, so that form sealing between orienting sleeve lateral wall and the hydraulic cylinder inboard wall of cylinder block, thereby effectively improved the Leakage between orienting sleeve and the hydraulic cylinder cylinder body.
In the piston guide cover of above-mentioned automobile steering device, described sealing member is the O RunddichtringO.
In the piston guide cover of above-mentioned automobile steering device, described O RunddichtringO adopts elastomeric material to make.
In the piston guide of above-mentioned automobile steering device cover, described orienting sleeve body and and piston between be provided with seal ring.Seal ring between orienting sleeve body and the piston can prevent that fluid from leaking between orienting sleeve and piston.
Compared with prior art, the piston guide cover of this automobile steering device utilizes the annular seal groove of orienting sleeve lateral wall to place seal ring, so that form sealing between orienting sleeve lateral wall and the hydraulic cylinder cylinder body, thereby solved preferably the Leakage between orienting sleeve and the hydraulic cylinder cylinder body, saved resource; Simultaneously, the seal ring between orienting sleeve and the piston rod also can solve the Leakage between orienting sleeve and the piston rod preferably, so that the sealing effectiveness of the piston guide of this automobile steering device cover is better, practical value is higher.
Description of drawings
Fig. 1 is the cutaway view of the piston guide cover of this automobile steering device.
Among the figure, 1, the orienting sleeve body; 2, O RunddichtringO.
The specific embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
Embodiment one
As shown in Figure 1, a kind of piston guide cover of automobile steering device comprises orienting sleeve body 1, and when mounted, orienting sleeve body 1 is fixed in the hydraulic cylinder, the inwall close contact of orienting sleeve body 1 lateral wall and hydraulic cylinder cylinder body.Then be equipped with piston rod in the orienting sleeve body 1, be fixed with piston on the piston rod, and piston rod passes orienting sleeve body 1.
Offer annular seal groove on orienting sleeve body 1 lateral wall, annular seal groove is provided with sealing member, seals by sealing member between orienting sleeve body 1 lateral wall and the hydraulic cylinder inboard wall of cylinder block.In the present embodiment, the O RunddichtringO 2 of sealing member for adopting elastomeric material to make.Also be provided with seal ring between orienting sleeve and the piston rod.
Annular seal groove is placed O RunddichtringO 2 so that formation sealing between orienting sleeve and the hydraulic cylinder cylinder body has prevented that effectively fluid from leaking between orienting sleeve and hydraulic cylinder cylinder body thereby the piston guide cover of this automobile steering device is by arranging on orienting sleeve body 1 lateral wall.In addition, in order to solve the Leakage between orienting sleeve and the piston rod, be provided with equally seal ring between orienting sleeve body 1 and the piston rod, therefore, so that the sealing effectiveness of this orienting sleeve is better, effectively saved resource.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (4)
1. the piston guide cover of an automobile steering device, comprise orienting sleeve body (1), orienting sleeve body (1) is equipped with piston rod, the lateral wall of orienting sleeve body (1) and hydraulic cylinder inboard wall of cylinder block close contact, it is characterized in that, the lateral wall of described orienting sleeve body (1) has an annular seal groove, and described annular seal groove is provided with sealing member.
2. the piston guide cover of automobile steering device according to claim 1 is characterized in that, described sealing member is O RunddichtringO (2).
3. the piston guide cover of automobile steering device according to claim 2 is characterized in that, described O RunddichtringO (2) adopts elastomeric material to make.
4. according to claim 1 and 2 or the piston guide cover of 3 described automobile steering devices, it is characterized in that, described orienting sleeve body (1) and and piston between be provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220434231 CN202754021U (en) | 2012-08-29 | 2012-08-29 | Piston guide sleeve for vehicle steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220434231 CN202754021U (en) | 2012-08-29 | 2012-08-29 | Piston guide sleeve for vehicle steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202754021U true CN202754021U (en) | 2013-02-27 |
Family
ID=47733216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220434231 Expired - Fee Related CN202754021U (en) | 2012-08-29 | 2012-08-29 | Piston guide sleeve for vehicle steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202754021U (en) |
-
2012
- 2012-08-29 CN CN 201220434231 patent/CN202754021U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 317600 Jiefangtang Farm, Yucheng Street, Yuhuan County, Taizhou City, Zhejiang Province Patentee after: ZHEJIANG HUIFENG AUTO PARTS Co.,Ltd. Address before: 317600 Jiefangtang Farm, Yucheng Street, Yuhuan County, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG HUIFENG AUTOPARTS MFG Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20210829 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |