CN204386861U - Power steering pump packing structure - Google Patents
Power steering pump packing structure Download PDFInfo
- Publication number
- CN204386861U CN204386861U CN201420770801.1U CN201420770801U CN204386861U CN 204386861 U CN204386861 U CN 204386861U CN 201420770801 U CN201420770801 U CN 201420770801U CN 204386861 U CN204386861 U CN 204386861U
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- China
- Prior art keywords
- guide sleeve
- cylinder
- cylinder barrel
- sealing
- bar
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Abstract
A kind of power steering pump packing structure, belongs to the mechanical seal field of auto parts machinery.The utility model, by changing the sealing configuration of existing steering actuation cylinder, adopts the power steering pump packing structure that two-layer sealing combines.The utility model is provided with guide sleeve in cylinder barrel end, and guide sleeve is enclosed within cylinder bar, and the chuck of guide sleeve outer ring is corresponding with the draw-in groove of cylinder barrel inner ring, and places snap ring between chuck and draw-in groove; The part that guide sleeve stretches out cylinder barrel is provided with nut by screw thread, and is provided with and is covered with dust; By the sealing of OP circle between guide sleeve and cylinder barrel; Guide sleeve and cylinder bar front portion are sealed envelope by bar, and middle part is sealed by wear ring, and combination seal is enclosed by wear ring and ON in rear portion.The utility model structure is simple, easy to use, owing to being revised as two-layer sealing by between piston rod (cylinder bar) and guide sleeve, thus make also can ensure easy motion at low speeds, exist without creeping phenomenon, two-layer sealing can significantly improve the sealability of power assistance pump for steering at different road conditions and environment.
Description
Technical field
The utility model belongs to the mechanical seal field of auto parts machinery.
Background technique
Conventional automobile power steering pump seal generally adopts once sealing, be exactly come by a large sealing gasket between guide sleeve and cylinder bar, there is following shortcoming in this kind of structure: Sealing very easily damages, and sealability is poor, and have a strong impact on the endurance quality of power assistance pump for steering.
Summary of the invention
The utility model, by changing the sealing configuration of existing power assistance pump for steering, adopts the power steering pump packing structure that two-layer sealing combines.
The utility model is provided with guide sleeve in cylinder barrel end, and guide sleeve is enclosed within cylinder bar, and the chuck of guide sleeve outer ring is corresponding with the draw-in groove of cylinder barrel inner ring, and places snap ring between chuck and draw-in groove; The part that guide sleeve stretches out cylinder barrel is provided with nut by screw thread, and is provided with and is covered with dust; By the sealing of OP circle between guide sleeve and cylinder barrel; Guide sleeve and cylinder bar front portion are sealed envelope by bar, and middle part is sealed by wear ring, and combination seal is enclosed by wear ring and ON in rear portion.
The utility model structure is simple, easy to use, owing to being revised as two-layer sealing by between piston rod (cylinder bar) and guide sleeve, thus make also can ensure easy motion at low speeds, exist without creeping phenomenon, two-layer sealing can significantly improve the sealability of power assistance pump for steering at different road conditions and environment.
Accompanying drawing explanation
Fig. 1 is the utility model structure sectional view.
Embodiment
The utility model is provided with guide sleeve 2 in cylinder barrel 1 end, guide sleeve 2 is enclosed within cylinder bar 10, and the chuck of guide sleeve 2 outer ring is corresponding with the draw-in groove of cylinder barrel 1 inner ring, and between chuck and draw-in groove, place snap ring 6, upper half part of snap ring 6 is stuck in chuck, and lower half portion is stuck on draw-in groove; The part that guide sleeve 2 stretches out cylinder barrel 1 is provided with nut 5 by screw thread, and is provided with and is covered with dust 4; Enclose 7 by OP between guide sleeve 2 and cylinder barrel 1 to seal; Guide sleeve 2 and cylinder bar 10 front portion are sealed 3 by bar and are sealed, and middle part is sealed by wear ring 2, and rear portion is enclosed combination 9 by wear ring and ON and sealed.
By adopting double-layer seal at guide sleeve and piston rod (cylinder bar) sealing means, (bar seals the utility model, OP encloses, wear ring and the combination of ON circle), ON has less startup and kinetic friction force entirely, so also can easy motion be ensured under the low speed, without features such as creeping phenomenons, being covered with dust is a kind of polyurethane material lip packing, there is excellent wear resistance, impact loading and pressure peak insensitive and be applicable to and the feature such as severe operating mode, two kinds of seal combination can significantly improve the sealability of steering actuation cylinder at different road conditions and environment, the structure of guide sleeve end employing screw threads for fastening can solve between guide sleeve and cylinder barrel and there is shifting amount in addition, thus cause the problem of sealing part abrasion, substantially increase the endurance quality of power assistance pump for steering.
Claims (1)
1. a power steering pump packing structure, it is characterized in that: in cylinder barrel (1) end, guide sleeve (2) is installed, guide sleeve (2) is enclosed within cylinder bar (10), the chuck of guide sleeve (2) outer ring is corresponding with the draw-in groove of cylinder barrel (1) inner ring, and between chuck and draw-in groove, place snap ring (6); The part that guide sleeve (2) stretches out cylinder barrel (1) is provided with nut (5) by screw thread, and is provided be covered with dust (4); Enclose (7) by OP between guide sleeve (2) and cylinder barrel (1) to seal; Guide sleeve (2) seals (3) with cylinder bar (10) front portion by bar and seals, and middle part is by wear ring (2) sealing, and rear portion is by wear ring and ON circle combination (9) sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420770801.1U CN204386861U (en) | 2014-12-10 | 2014-12-10 | Power steering pump packing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420770801.1U CN204386861U (en) | 2014-12-10 | 2014-12-10 | Power steering pump packing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204386861U true CN204386861U (en) | 2015-06-10 |
Family
ID=53359587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420770801.1U Active CN204386861U (en) | 2014-12-10 | 2014-12-10 | Power steering pump packing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204386861U (en) |
-
2014
- 2014-12-10 CN CN201420770801.1U patent/CN204386861U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |