CN202557601U - Integral type automobile power steering device for light vehicle - Google Patents
Integral type automobile power steering device for light vehicle Download PDFInfo
- Publication number
- CN202557601U CN202557601U CN2012202228451U CN201220222845U CN202557601U CN 202557601 U CN202557601 U CN 202557601U CN 2012202228451 U CN2012202228451 U CN 2012202228451U CN 201220222845 U CN201220222845 U CN 201220222845U CN 202557601 U CN202557601 U CN 202557601U
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- steering
- steering device
- spool
- automobile power
- assembly
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Abstract
The utility model relates to an integral type automobile power steering device for a light vehicle. The integral type automobile power steering device for the light vehicle comprises a shell body assembly, a side cover assembly, a swinging arm shaft assembly, a steering nut and a control rotary valve assembly. A shell body of the steering device is designed to be in an integral type. The control rotary valve assembly is directly assembled in the shell body assembly. Sealing pieces arranged between the control rotary valve assembly and the shell body of the steering device, sealing pieces among separating rotary valve oil holes are assembled on an outer shell of a control rotary valve, and sealing grooves are arranged on a shell body of the control rotary valve assembly section. A structure of a rectangle sealing ring and an O-shaped sealing ring is adopted by the sealing pieces, wherein the rectangle sealing ring and the O-shaped sealing ring are made of polytetrafluoroethylene materials. A valve core is supported by a needle bearing and a ball bearing. The valve core and a steering screw rod are meshed with a groove through a boss for position-limit and transmission, and the sealing of the valve core is formed by the adoption of an oil seal and a J-shaped dustproof seal. The steering device is compact in structure, the whole volume is reduced, and the arrangement space of the steering device in the whole automobile can be effectively saved. By means of the optimization of the internal structure of the steering device, the joint face where the external leakage occurs is reduced, the steering can be more light and convenient, the steering touch feel and the return performance are good, and the service life of the steering device is prolonged.
Description
Technical field
The utility model belongs to the hydraulic transmission technology field of wheel steering system, the integral automobile power steering that particularly a kind of Light-duty Vehicle is used.
Background technology
The control rotary valve part of existing automobile power steering with two kinds of mounting structures are arranged: split type and integral type.Split-type structural is seen Fig. 2: the housing of deflector section is connected through bolt with the shell of control rotary valve section, adopts seal with O ring between the two, and in actual use quality problems that have external leakage had both caused to waste energy and contaminated environment more.One-piece construction: the housing of deflector section is in aggregates with the enclosure designs of control rotary valve section, has stopped the hidden danger of quality that external leakage appears in this place.In the automobile power steering that Light-duty Vehicle is used, see Fig. 1; Partition seal between the control rotary valve oilhole is arranged on the valve pocket, because case material all adopts spheroidal graphite iron, wears no resistance; By the seal ring on the valve pocket repeatedly after the spin friction; Will the housing endoporus be ground obvious groove in a short time, cause internal leakage, cause hard steering.
The utility model content
The purpose of the utility model is to overcome the deficiency that above prior art exists, the integral automobile power steering that provides a kind of Light-duty Vehicle to use, and it has compact conformation, overall volume is dwindled; Can save the arrangement space of deflector on car load by actv., make whole power steering weight saving, through the optimization of deflector inner structure; Reduced the faying face that external leakage occurs; Make to turn to lightlyer, turn to feel and return property good, prolong the service life of deflector.
The purpose of the utility model can realize through following measure: be made up of steering gear housing assembly, steering box side cover assembly and rocker shaft assembly, steering nut and control valve packe; The housing of the control valve packe section of steering gear housing and the case design of steering nut section are integral formula; The control valve packe directly is assemblied in the housing assembly; Between the steering screw outer peripheral face in the control valve packe and the control valve packe section inner hole wall of steering gear housing; The sealing member that is used for separating between the control rotary valve oilhole is assemblied in the steering screw outer peripheral face of controlling valve packe, and seal groove is opened on the control valve packe section inner hole wall of steering gear housing; Sealing member can adopt the rectangular seal ring of polytetrafluoroethylmaterial material to add the structure of O-ring seals; Spool is supported by a needle bearing and a ball-bearing casing, and needle bearing is sleeved on the spool, places between spool and steering screw, and ball-bearing casing is sleeved on the spool, places in the bearing cap shim; Spool and steering screw are through boss and engagement is spacing and transmission; The sealing of spool adopts oil sealing to add J-shaped dust seal composition.
The integral automobile power steering that the Light-duty Vehicle of the utility model is used; The housing of control valve packe section becomes integral type with the case design of deflector section, and the control valve packe directly is assemblied in the housing assembly, has reduced by the leak source that leaks; Make more compact structure, alleviated the total weight of deflector; The structure that adopts the rectangular seal ring of polytetrafluoroethylmaterial material to add O-ring seals is separated three groups of oilholes of control rotary valve, and the sealing structure has that self-styled is strong, self compensation property is strong; Spool is supported by needle bearing and ball-bearing casing, effectively reduces the influence of the right alignment of dress mating part to properties of product, has reduced the requirement on machining accuracy of part; The sealing of spool end adopts oil sealing to add J-shaped dust seal composition, has strengthened dustproof effect effectively.
Description of drawings
Fig. 1 is the control rotary valve structural front view of existing integral automobile power steering
Fig. 2 is the control rotary valve structural front view of existing detachable automobile power steering
Fig. 3 is that the Light-duty Vehicle of the utility model embodiment one is with integral automobile power steering front view
Fig. 4 is the control rotary valve front view of the Light-duty Vehicle of the utility model embodiment one with the integral automobile power steering
Fig. 5 is the control rotary valve right elevation of the Light-duty Vehicle of the utility model embodiment one with the integral automobile power steering.
The specific embodiment
To combine accompanying drawing that the utility model is elaborated below.
Extremely shown in Figure 5 like Fig. 3; The real Light-duty Vehicle of the utility model is used the integral automobile power steering; Be made up of with control valve packe 4 with rocker shaft assembly 3, steering nut 2 housing assembly 1, side cover assembly 5, control valve packe 4 comprises steering screw 4a, torsion bar 4b, needle bearing 4c, valve pocket 4d, spool pin 4e, torsion bar pin 4f, split ball-bearing casing 4g, spool pin 4h, back-up ring 4i, ball-bearing casing 4j, gland 4k, J-shaped dust seal 4l, oil sealing 4m, spool 4n, anti-release member 4o, gland ring 4p, rectangular seal ring 4q, O-ring seals 4r.Torsion bar 4b is socketed in the spool 4n with the spacing connection of spool pin 4e; Spool 4n goes up suit valve pocket 4d with the spacing connection of spool pin 4h; Spool 4n front end sleeve is loaded onto needle bearing 4c; It is circumferentially spacing with torsion bar pin 4f and steering screw 4a to be set in interior this termination portion of torsion bar 4b of steering screw 4a after torsion bar 4b, spool 4n, valve pocket 4d, their combinations of needle bearing 4c; Steering screw 4a torsion bar 4b, spool 4n, valve pocket 4d, needle bearing 4c assembling back fit on split ball-bearing casing 4g on steering screw 4a more directly is assemblied in the housing 1 again, behind the spool 4n successively end load onto back-up ring 4i, ball-bearing casing 4j, J-shaped dust seal 4l, oil sealing 4m, gland 4k, anti-release member 4o.
From figure, can find out; The circumferential rotation of valve pocket 4d and steering screw 4a is carried out spacing and transmission through groove 4n1 on the spool 4n and the boss 4a1 on the steering screw 4a; Steering screw 4a and steering nut 4b adopt worm transmission structure that rotatablely moving of steering screw 4a become the straight-line motion of steering nut 4b, the fan tooth engaged transmission of tooth bar on the steering nut 4b and rocker shaft assembly 3.When rotating steering handwheel; Because the effect of resistance wheel; Originally steering nut 4b is motionless, and then steering screw 4a is also motionless, relatively rotates occurring between valve pocket 4d and the 4 steering screw 4a like this; Variation has taken place in the valve port gap on the valve pocket 4d, thereby makes the oil that flows to corresponding epitrochoidal chamber produce and the corresponding oil pressure of cornering resistance.This oil pressure acts on steering nut 4b and go up to promote it and overcome cornering resistance and produce displacement, rotates the function that realizes wheel steering thereby drive the rocker shaft assembly.The structure that adopts the rectangular seal ring 4q of polytetrafluoroethylmaterial material to add O-ring seals 4r is separated three groups of oilholes of 4 steering screw 4a, and it is assemblied on the housing 1, cooperates with steering screw 4a cylindrical.Spool 4n is supported by 6 needle bearings and 11 ball-bearing casings.The sealing of spool 4n end adopts oil sealing 4q to add J-shaped dust seal 4r composition.
The control valve packe directly is assemblied in the housing assembly, has reduced by the leak source that leaks, and makes more compact structure, has alleviated the total weight of deflector.
Spool is circumferentially fixing through straight pin and valve pocket; The circumferential rotation of valve pocket and steering screw is carried out spacing and transmission through groove on the spool and the boss on the steering screw; Steering screw and steering nut adopt worm transmission structure that rotatablely moving of steering screw become the straight-line motion of steering nut, the fan tooth engaged transmission of tooth bar on the steering nut and rocker shaft.When rotating steering handwheel; Because the effect of resistance wheel; Originally steering nut is motionless, and then steering screw is also motionless, relatively rotates occurring between valve pocket and the steering screw like this; Variation has taken place in the valve port gap on the valve pocket, thereby makes the oil that flows to corresponding epitrochoidal chamber produce and the corresponding oil pressure of cornering resistance.This oil pressure acts on the steering nut and to promote it and overcome cornering resistance and produce displacement, rotates the function that realizes wheel steering thereby drive rocker shaft.
The rectangular seal ring of employing polytetrafluoroethylmaterial material adds the structure of O-ring seals and separates three groups of oilholes controlling rotary valve; The sealing structure has advantages such as self-styled is strong, self compensation property is strong, and it is assemblied on the housing, cooperates with the steering screw cylindrical; Steering screw cylindrical hardness high (58-63HRC); Be difficult to by the wearing and tearing of rectangular seal ring, the abrasion loss of rectangular seal ring self also very little (because of the steering screw roughness of excircle reaches Ra0.4), actv. guarantees desirable sealing effectiveness.But if seal ring is contained on the steering screw and shell, because housing is a spheroidal graphite iron, hardness is lower, and roughness is difficult to improve, and is easy to occur the problem of serious wear in a short time, causes sealing effectiveness poor, causes hard steering.
Spool is supported by needle bearing and ball-bearing casing; Wherein ball-bearing casing has the function that friction force is little, circumferential deflection compensates; The right alignment that effectively reduces the dress mating part has reduced the requirement on machining accuracy of part to the influence of properties of product (right alignment overproof cause the assembly performance hair fastener, return principal-employment).
The sealing of spool end adopts oil sealing to add J-shaped dust seal composition; Because vehicle uses the industrial and mineral many places in sand and dust, sewage; Oil sealing is under the abominable situation for a long time, depends merely on the erosion that the dustproof lip of oil sealed can not effectively prevent sand and dust, cause oil sealing to lose sealing property too early; Cause external leakage, the J-shaped dust seal can effectively strengthen dustproof effect.
Claims (5)
1. integral automobile power steering that Light-duty Vehicle is used; Constitute by steering gear housing assembly, steering box side cover assembly and rocker shaft assembly, steering nut and control valve packe; It is characterized in that: the housing of the control valve packe section of steering gear housing and the case design of steering nut section are integral formula; The control valve packe directly is assemblied in the housing assembly; Between the steering screw outer peripheral face in the control valve packe and the control valve packe section inner hole wall of steering gear housing; The sealing member that is used for separating between the control rotary valve oilhole is assemblied in the steering screw outer peripheral face of controlling valve packe, and seal groove is opened on the control valve packe section inner hole wall of steering gear housing.
2. the integral automobile power steering that Light-duty Vehicle according to claim 1 is used is characterized in that: described sealing member adopts the rectangular seal ring of polytetrafluoroethylmaterial material to add the structure of O-ring seals.
3. the integral automobile power steering that Light-duty Vehicle according to claim 1 and 2 is used; It is characterized in that: spool is supported by a needle bearing and a ball-bearing casing, and needle bearing is sleeved on the spool, places between spool and steering screw; Ball-bearing casing is sleeved on the spool, places in the bearing cap shim.
4. the integral automobile power steering that Light-duty Vehicle according to claim 3 is used is characterized in that: spool and steering screw are through boss and engagement is spacing and transmission.
5. the integral automobile power steering that Light-duty Vehicle according to claim 4 is used is characterized in that: the sealing of spool adopts oil sealing to add J-shaped dust seal composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202228451U CN202557601U (en) | 2012-05-16 | 2012-05-16 | Integral type automobile power steering device for light vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202228451U CN202557601U (en) | 2012-05-16 | 2012-05-16 | Integral type automobile power steering device for light vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202557601U true CN202557601U (en) | 2012-11-28 |
Family
ID=47207290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202228451U Expired - Fee Related CN202557601U (en) | 2012-05-16 | 2012-05-16 | Integral type automobile power steering device for light vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202557601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799774A (en) * | 2016-05-11 | 2016-07-27 | 新乡艾迪威汽车科技有限公司 | Rack supporting sleeve structure of automobile steering device |
| CN111674462A (en) * | 2020-06-23 | 2020-09-18 | 陕西法士特齿轮有限责任公司 | Steering gear hydraulic structure assembly |
-
2012
- 2012-05-16 CN CN2012202228451U patent/CN202557601U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799774A (en) * | 2016-05-11 | 2016-07-27 | 新乡艾迪威汽车科技有限公司 | Rack supporting sleeve structure of automobile steering device |
| CN111674462A (en) * | 2020-06-23 | 2020-09-18 | 陕西法士特齿轮有限责任公司 | Steering gear hydraulic structure assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160713 Address after: 321100 Zhejiang city of Lanxi Province River Street Economic Development Zone, Yan Sha Road No. 6 Patentee after: Zhejiang star Hydraulic Technology Co., Ltd. Address before: 321102 Zhejiang city of Jinhua province Lanxi City Economic Development Zone No. 6 Yan Sha Lu (new company) Patentee before: Zhejiang Xinyue Auto Parts Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20190516 |