CN202152067U - Rotary valve of cycle ball hydraulic power steering gear - Google Patents
Rotary valve of cycle ball hydraulic power steering gear Download PDFInfo
- Publication number
- CN202152067U CN202152067U CN2011202591050U CN201120259105U CN202152067U CN 202152067 U CN202152067 U CN 202152067U CN 2011202591050 U CN2011202591050 U CN 2011202591050U CN 201120259105 U CN201120259105 U CN 201120259105U CN 202152067 U CN202152067 U CN 202152067U
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- Prior art keywords
- input shaft
- assembly
- steering gear
- hydraulic power
- rotary valve
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- Expired - Lifetime
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Abstract
The utility model relates to relative parts of automobile steering gears, in particular to a rotary valve of a cycle ball hydraulic power steering gear, which comprises a steering nut assembly, a steering screw assembly, a valve assembly, an upper cap assembly, a torsion rod and an input shaft. The torsion rod is inserted into the input shaft directly and is in interference fit with a hole by the aid of the input shaft. The original structure of connecting a cylindrical pin to the torsion rod and the input shaft indirectly is substituted by the structure of connecting the torsion rod with the input shaft directly by means of shaft-and-hole interference fit, on one hand, faults of blockage, runout and oil leakage of the steering gear assembly are reduced while the fatigue life of the steering gear is prolonged; and on the other hand, difficulty of the technology is reduced, the number of parts is decreased and cost is reduced.
Description
Technical field
The utility model relates to the automobile steering device associated components, a kind of specifically recirculating ball hydraulic power steering gear rotary valve.
Background technology
The recirculating ball hydraulic power steering gear is the product of comparative maturity in the world, is widely used at present on the commercial vehicle/comm..vehicle, and its inner structure not only relates to the high accuracy mechanical transmission, also needs complicated hydraulic technique.Along with the further lifting of car load quality requirements, user vehicle has also proposed new requirement to the handling maneuver performance, especially has higher requirement to return performance and hand-power characteristic.
Existing recirculating ball hydraulic power steering gear rotary valve structure is as shown in Figure 1; Comprise steering nut assembly 1, steering screw assembly 2, valve body assembly 3, go up cap assembly 4, torsion bar 5 and input shaft 6; Recirculating ball hydraulic pressure helps torsion bar 5 and input shaft 6 to realize connecting indirectly through straight pin 7; The defective that produces like this is: need be on input shaft and torsion bar pin hole processing, weakened the intensity of torsion bar and input shaft; Iron filings in the course of processing get into the input shaft oilhole easily, are difficult to remove, and influence valve packe performance and cleanliness level, can cause car load hair fastener fault and seal ring early failure oil leakage fault; Spool periphery to input shaft during the pressing straight pin causes damage, influences the cooperation of spool valve pocket, causes the car load hair fastener, does not return positive fault; In the long-term use process, it is loosening that straight pin is prone to by circumferential alternation twisting force, causes car load to turn to unstable fault.
The utility model content
The utility model technical matters to be solved is; Shortcoming to above prior art exists proposes a kind of recirculating ball hydraulic power steering gear rotary valve, can reduce the hair fastener fault of steering assembly, unstable fault and oil leakage fault; Improve the fatigue life of deflector, cost-cutting.
The technical scheme that the utility model solves above technical matters is:
Recirculating ball hydraulic power steering gear rotary valve comprises steering nut assembly, steering screw assembly, valve body assembly, goes up cap assembly, torsion bar and input shaft; Torsion bar directly is inserted in the input shaft through axle and hole interference fit.
Like this; Through cancelling the structure that original straight pin connects torsion bar and input shaft indirectly; Change torsion bar and input shaft into and directly realize connecting, reduced the hair fastener fault of steering assembly, unstable fault and oil leakage fault on the one hand, improved the fatigue life of deflector through the hole interference fit; Reduce technology difficulty on the other hand, reduced number of spare parts, reduced cost.
The technical scheme that the utility model further limits is:
Aforesaid recirculating ball hydraulic power steering gear rotary valve, the cylindrical of the abutting end of torsion bar and input shaft are provided with straight knurling structure (straight spline cylindrical structure).Can increase the magnitude of interference, solve the exhausting problem in the pressing process simultaneously.
The beneficial effect of the utility model is: the indirect bind mode that the torsion bar of the direct coupling type rotary valve of recirculating ball hydraulic power steering gear of the utility model and input shaft have been cancelled straight pin; Be improved to through the direct bind mode of hole interference fit; Reduce the hair fastener fault of steering assembly, unstable fault and oil leakage fault on the one hand, improved the fatigue life of deflector; Reduce technology difficulty on the other hand, reduced number of spare parts, reduced cost.
Description of drawings
Fig. 1 is existing recirculating ball hydraulic power steering gear rotary valve structural representation.
Fig. 2 is the structural representation of the utility model.
Fig. 3 is the structural representation of the utility model torsion bar.
The specific embodiment
Embodiment 1
Present embodiment proposes a kind of recirculating ball hydraulic power steering gear rotary valve, and structure is as shown in Figure 1, comprises steering nut assembly 1, steering screw assembly 2, valve body assembly 3, goes up cap assembly 4, torsion bar 5 and input shaft 6.In the steering screw assembly 2, input shaft 6 can be realized level and smooth relatively rotating with screw rod, through straight pin steering screw and torsion bar 5 is connected firmly, and torsion bar 5 directly is inserted in the input shaft 6 through axle and hole interference fit.Torsion bar 5 is provided with straight knurling structure 8 (straight spline cylindrical structure) with the cylindrical of the abutting end of input shaft 6; As shown in Figure 2; The cylindrical of torsion bar 5 is processed with the straight knurling structure, and torsion bar straight knurling end is not processed vertical pin-and-hole, and the place, the hole that cooperates with torsion bar 5 of input shaft 6 does not process vertical pin-and-hole; Can increase the magnitude of interference, solve the exhausting problem in the pressing process simultaneously.Input shaft 6 can relatively rotate with steering screw ± and 7 °, the rigidity through torsion bar 5 realizes turning to hand-power.
The utility model has been cancelled the structure that original straight pin connects torsion bar and input shaft indirectly; Be improved to through the direct bind mode of hole interference fit; Reduce the hair fastener fault of steering assembly, unstable fault and oil leakage fault on the one hand, improved the fatigue life of deflector; Reduce technology difficulty on the other hand, reduced number of spare parts, reduced cost.
Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (2)
1. recirculating ball hydraulic power steering gear rotary valve comprises steering nut assembly (1), steering screw assembly (2), valve body assembly (3), goes up cap assembly (4), torsion bar (5) and input shaft (6); It is characterized in that: said torsion bar (5) directly is inserted in the input shaft (6) through axle and hole interference fit.
2. recirculating ball hydraulic power steering gear rotary valve as claimed in claim 1 is characterized in that: said torsion bar (5) is provided with the straight knurling structure with the cylindrical of the abutting end of input shaft (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202591050U CN202152067U (en) | 2011-07-21 | 2011-07-21 | Rotary valve of cycle ball hydraulic power steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202591050U CN202152067U (en) | 2011-07-21 | 2011-07-21 | Rotary valve of cycle ball hydraulic power steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152067U true CN202152067U (en) | 2012-02-29 |
Family
ID=45692573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202591050U Expired - Lifetime CN202152067U (en) | 2011-07-21 | 2011-07-21 | Rotary valve of cycle ball hydraulic power steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202152067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879445A (en) * | 2014-03-14 | 2014-06-25 | 杭州世宝汽车方向机有限公司 | Steering control valve for heavy recirculating ball steering gear |
-
2011
- 2011-07-21 CN CN2011202591050U patent/CN202152067U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879445A (en) * | 2014-03-14 | 2014-06-25 | 杭州世宝汽车方向机有限公司 | Steering control valve for heavy recirculating ball steering gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 211001 No. 71, Qinhuai Road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Donghua intelligent Steering System Co., Ltd. Address before: 211106 No. 71, Qinhuai Road, Jiangning District, Jiangsu, Nanjing Patentee before: Nanjing Donghua Automotive Steering Co. ,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120229 |