CN201386846Y - Valve sealing structure of power steering gear - Google Patents
Valve sealing structure of power steering gear Download PDFInfo
- Publication number
- CN201386846Y CN201386846Y CN200920118171U CN200920118171U CN201386846Y CN 201386846 Y CN201386846 Y CN 201386846Y CN 200920118171 U CN200920118171 U CN 200920118171U CN 200920118171 U CN200920118171 U CN 200920118171U CN 201386846 Y CN201386846 Y CN 201386846Y
- Authority
- CN
- China
- Prior art keywords
- steering gear
- power steering
- sealing
- valve
- sealing structure
- 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 discloses a valve sealing structure of a power steering gear, which comprises a valve sleeve and a front cover. A plurality of sealing ring slots are arranged on the inner circumference of the front cover, and sealing parts inside the sealing ring slots are combined sealing rings. After utilizing the technical scheme, the valve sleeve and the front cover utilize an external sealing form, thereby effectively resolving the problem of inner leakage of a valve.
Description
Technical field
The utility model relates to automobile power steering.
Background technique
Recirculating ball steering gear mainly is made up of protecgulum, spool, valve pocket, steering screw, steering nut, housing, sector shaft.The two-stage transmission is generally arranged in the recirculating ball steering gear, and the first order is the bolt and nut transmission, and the second level is rack tooth fan transmission.The sealability of power steering gear valve body directly influences the performance of product, and the sealing of teflon circle is adopted in the available dynamic commutator mostly, though wear-resisting like this, leakage rate is bigger.If use seal with O ring separately, though good airproof performance, frictional force is big.
The model utility content
Technical problem to be solved in the utility model provides a kind of power steering gear valve seal structure that effectively prevents internal leakage.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: power steering gear valve seal structure, comprise valve pocket, protecgulum, and have multiple-sealed annular groove on the described protecgulum inner circumference, the Sealing in the described closure gasket groove is a combined seal ring.
Described combined seal ring is the teflon circle of inner ring and the O shape circle of outer ring, and the total compression stress of O shape circle is concentrated by the teflon circle and acted on the slip surface, has reduced the frictional force between the movement parts when improving sealability greatly.
The utility model adopts above-mentioned external sealed form owing to adopted technique scheme between valve pocket, the protecgulum, efficiently solve valve body internal leakage problem.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of the utility model power steering gear valve seal structure.
Fig. 2 is the partial enlarged drawing at A place among Fig. 1.
Embodiment
Illustrated in figures 1 and 2 is the utility model power steering gear valve seal structure, comprises valve pocket 1, protecgulum 2, has multiple-sealed annular groove on described protecgulum 2 inner circumferences, and the Sealing in the described closure gasket groove is a combined seal ring.Described combined seal ring is the teflon circle 3 of inner ring and the O shape circle 4 of outer ring.
Claims (2)
1. power steering gear valve seal structure comprises valve pocket (1), protecgulum (2), has multiple-sealed annular groove on described protecgulum (2) inner circumference, it is characterized in that: the Sealing in the described closure gasket groove is a combined seal ring.
2. according to the described power steering gear valve seal of claim 1 structure, it is characterized in that: described combined seal ring is the teflon circle (3) of inner ring and the O shape circle (4) of outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920118171U CN201386846Y (en) | 2009-04-21 | 2009-04-21 | Valve sealing structure of power steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920118171U CN201386846Y (en) | 2009-04-21 | 2009-04-21 | Valve sealing structure of power steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386846Y true CN201386846Y (en) | 2010-01-20 |
Family
ID=41579380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920118171U Expired - Fee Related CN201386846Y (en) | 2009-04-21 | 2009-04-21 | Valve sealing structure of power steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386846Y (en) |
-
2009
- 2009-04-21 CN CN200920118171U patent/CN201386846Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20130421 |