CN2190063Y - Rolling valve integral automobile steering system without rolling bearing - Google Patents
Rolling valve integral automobile steering system without rolling bearing Download PDFInfo
- Publication number
- CN2190063Y CN2190063Y CN 94202303 CN94202303U CN2190063Y CN 2190063 Y CN2190063 Y CN 2190063Y CN 94202303 CN94202303 CN 94202303 CN 94202303 U CN94202303 U CN 94202303U CN 2190063 Y CN2190063 Y CN 2190063Y
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- steering
- screw
- oil groove
- steering screw
- aperture
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Abstract
The utility model provides a rotary valve integral automobile power steering device without a rolling bearing, which relates to a rotary valve integral automobile power steering device with a novel structure and adopts a sliding bearing to replace a rolling bearing which is used in a traditional structure, so the utility model has the advantages of simplified structure and enhanced performance. The cutting edge of a valve sleeve is modified to adjust the hand power characteristic curve of a steering control valve to meet operating requirements optimally. Hydraulic oil flows in a steering screw shaft to reduce the possibility of outward leakage. The utility model can be made by adopting national traditional processes and national popularized material. Thus the utility model has the advantages of reasonable design, simple and compact structure, good performance as well as good seriation and is suitable for various variants and various wheeled vehicles with shaft load of steering shafts under 8T. The utility model can be conveniently connected with a steering power cylinder in parallel to be used for double front bridge steering of front shaft load which is larger than 8T.
Description
The utility model belongs to the integral automobile power steering in the permanent current formula automobile power steering device.Be applicable to that the steering shaft axle load contains 8T at 8T() below various wheeled car.Power cylinder in parallel also turns to applicable to two propons of preceding axle load greater than 8T.
For improving the production level of domestic power steering, 1986, No. 2 Automobile Factory introduced the deflector of automobile steering valve integral power from U.S. TRW Ltd. (US) One Space Park, Redondo Beach CA 90278 U.S.A., the domestic invention that the utility model of automobile steering valve integral power deflector has also been arranged.But, from the design of external introduction, its technology, material requirements, all inconsistent too big with national conditions, cause localization process very slow, the part that some are crucial as the powder metallurgy valve pocket etc., also needs to foreign procurement so far.Notification number is that the patent specification of CN87216513U discloses the deflector of a kind of automobile steering valve integral power, and its structure is still comparatively complicated, and is difficult for realizing multiple modification, and the hydraulic pressure invalid is the disc of diameter 36mm.
Above-mentioned two kinds of automobile rotary valve integral power steering gears, and the external automobile power steering of other manufacturer production, none is not: adopt antifriction-bearing box 1.; 2. by the cutting edge on the spool is revised, adjust the hand-power characteristic curve of power steering.And adopt antifriction-bearing box and the cutting edge on the spool is revised, all can cause complex structure, processing difficulties.
The purpose of this utility model is: design a kind of simple in structure, handling ease, volume is less, weight is lighter, the integral automobile power steering that the hand-power characteristic is better.
The purpose of this utility model realizes by following measure:
The utility model is made up of steering screw assembly (1), rack piston (10), tooth fan arm axle assembly (11), steering gear housing (17), protecgulum (18), side cover (20), lower cover (21).Steering screw assembly (1) has steering screw (2), spool (4), torsion bar (5), seal ring (6), bearing (9) and recirculating ball etc.; Tooth fan arm axle assembly (11) has tooth fan arm axle (12), trimming screw (13), bearing (16) etc.; It is characterized in that:
Steering screw (2) has a central through hole; Have six roads to become 60 ° of oil groove P(k that uniform two is obstructed on the head of steering screw (2)), oil groove T(m); Three uniform aperture A(g of one circle are arranged respectively on the optical axis circumference at steering screw (2) two ends) and aperture B(h), apart from steering screw (2) afterbody three aperture A(g far away) with oil groove P(k), oil groove T(m), on the axis projection of steering screw (2), become 30 ° dislocation; Screw rod sleeve pipe (3) fits snugly on the steering screw (2), and is resisted against on the shaft shoulder of steering screw (2) end, has formed the steering control valve valve pocket; On the external diameter of screw rod sleeve pipe (3), two each three uniform aperture P(n of circle are arranged), aperture T(o), these six apertures on the axis projection of screw rod sleeve pipe (3), become 60 ° uniform, and face oil groove P(k on the steering screw (2) respectively), oil groove T(m); The head pine of steering screw (2) is enclosed within on the spool (4), spool (4) is enclosed on one section shaft extension of steering screw (2) lining six obstructed tooth rectangular splines of two, straight pin (7) passes the waist shaped hole (j) of steering screw (2), and with spool (4) on pin-and-hole (s) flush fit; One end of the afterbody of steering screw (2) and torsion bar (5) fixes with straight pin (8), and the other end of spool (4) and torsion bar (5) then uses another straight pin (8) fixing.
The axle journal at tooth fan arm axle (12) fan tooth two ends uses pipe shape plain bearing (16) to be bearing on steering gear housing (17) and the side cover (20) respectively.
A protecgulum plug screw (19) is arranged on the protecgulum (18), be used for restriction and adjust the endplay of steering screw assembly (1), between steering screw assembly (1) and protecgulum (18), the protecgulum plug screw (19) plane sliding bearing (9) is arranged respectively in protecgulum (18).
Steering screw (2) finishing bathtray P(k), oil groove T(m) the cell wall on both sides on, the breach (i) of two symmetries is arranged.
Concrete structure of the present utility model is:
Steering screw assembly (1) is made up of steering screw (2), screw rod sleeve pipe (3), spool (4), torsion bar (5), seal ring (6), straight pin (7), two straight pins (8), two plane sliding bearing parts such as (9).Screw rod sleeve pipe (3) closely gland at the head of steering screw (2) and be resisted against on the shaft shoulder of steering screw (2) end.The head of steering screw (2) then pine is enclosed within on the spool (4).Straight pin (7) passes the waist shaped hole (j) of steering screw (2), and with spool (4) on pin-and-hole (s) flush fit, in order to the relative rotational angle of steering screw (11) of restriction spool (4).The afterbody of steering screw (2) and an end of torsion bar are fixing with a straight pin (8), and spool (4) then and the other end of torsion bar (5) is fixed with another straight pin (8).The axial motion gap of two plane sliding bearings (9) made from the polytetrafluoroethylene 3-layer composite material then uses protecgulum plug screw (19) to regulate.One of them plane sliding bearing (9), pine are enclosed within on the spool (4), are fastened on the protecgulum (18), relatively rotate with steering screw (2) end face.Another plane sliding bearing (9) tightly is enclosed within on the axle journal on the steering screw (2), relatively rotates with protecgulum plug screw (19).
Tooth fan arm axle assembly (11) is by tooth fan arm axle (12), trimming screw (13), two plane sliding bearings (14), fixedly plug screw (15), two pipe shape plain bearings (16) are formed.Two plane sliding bearings (14) made from the polyformaldehyde 3-layer composite material, one is placed on tooth and fans in the hole of arm axle (12) end, other end pine is enclosed within on the screw rod of trimming screw (13), their axial motion gap, regulate by fixing plug screw (15), and relatively rotate with two planar end surfaces of the big end of trimming screw (13).Two pipe shape plain bearings (16) made from the polyformaldehyde 3-layer composite material, in the hole that press fit over steering gear housing (17), another press fit in the hole of side cover (20), the axle journal at tooth fan arm axle (12) fan tooth two ends, then freely-supported is on these two pipe shape plain bearings (16), and relatively rotates with it.
Adopted above-mentioned plain bearing, one side energy simplified structure, two aspects can reduce the friction force of internal system, and can improve in-use performance and reliability, and this is proved by a large amount of tests.
Steering screw (2) is the axial workpiece that there is through hole at a center.End at it has six roads to become 60 ° of keyways uniform, that two is obstructed.Wherein, become three road keyways of 120 ° of layouts to be referred to as oil groove P(k), (" P " representative directly communicates with power steerig pump, down together); Other three road keyways are referred to as oil groove T(m), (" T " representative directly communicates with steering oil reservoir, down together).Processing above-mentioned three road oil groove P(k with end mil cutter) and three road oil groove T(m) afterwards,, on the cell wall on the both sides of per pass oil groove, processing the breach (i) of two symmetries again with a little bigger slightly end mil cutter of diameter, notch geometry is best with crescent.Be that the intensity make steering screw (11) does not too weaken oil groove P(k) and oil groove T(m) breach (i) of last two symmetries, be in staggered distribution one by one on two circumference of steering screw (2).On the circumference of steering screw (2) plug helix two ends optical axis, three uniform aperture A(g are also arranged respectively) (" A " representative communicates with ante-chamber of the present utility model, together following) and aperture B(h), (" B " representative communicates with back cavity of the present utility model, down together).Apart from steering screw afterbody three aperture A(g far away) on the axis projection of steering screw (11), become 30 ° dislocation with above-mentioned six road oil grooves.
Screw rod sleeve pipe (3) fits snugly on the steering screw (2), has formed the valve pocket of steering control valve.On the face of cylinder of screw rod sleeve pipe (3), two each three uniform aperture of circle are arranged, these six apertures then become 60 ° of layouts on axis projection, and face six road oil grooves on the steering screw (2).With oil groove P(k) aperture that faces, be referred to as aperture P(n) and oil groove T(m) aperture that faces, be referred to as aperture T(o).
That end shaft extension that spool (4) is enclosed in steering screw (2) lining is six obstructed tooth rectangular splines of two, and the spling hob of available standards processes on spline shaft milling machine.The other end then is the closely-pitched serration.The closely-pitched serration links by other part and steering handwheel.Be the very little running-fit in gap between the external diameter of six tooth rectangular splines and steering screw (2) the endoporus aperture, the tooth thickness of six tooth rectangular splines, wide less than the keyway on the steering screw (2).The wedge angle on key tooth both sides is referred to as cutting edge (r), and the wedge angle on the wide both sides of keyway is referred to as cutting edge (l).The gap that key tooth and keyway both sides are reserved, i.e. area between cutting edge (r) and the cutting edge (l) then is referred to as the opening of steering control valve, sees it is to communicate with power steerig pump, still is to communicate with steering oil reservoir, then is referred to as opening P(t respectively) and opening T(u).The shape of opening is that a slit adds a crescent, and when midway location, the area of all in theory openings should equate that six opening P(t are arranged respectively) and six opening T(u).
What the utility model adopted is ball circuit screw nut rack tooth fan formula, the steering handwheel (not shown) drives steering screw assembly (1) left-right rotation, driving rack piston (10) again moves back and forth in steering gear housing (17), at last, make the swing of tooth fan arm axle (12), realize motor turning.
When steering wheel rotation, torsion is delivered to torsion bar (5) by spool (4) and is delivered to steering screw (2) again, because torsion bar (5) is subjected to the twisting force distortion that twists, make the relative steering screw (2) of spool (4) that an angular transposition be arranged, torsional deflection Angular Displacement more is just big more, this will make three opening P(t of fwd on the rotation direction) and three opening T(u) area progressively diminish, until disappearance.At first being that the slit area progressively reduces, is that the area of lune progressively reduces then.In the process that aperture area progressively reduces, the operation pressure of system is ascending progressively to be set up, and the relation curve of system works pressure and torsion promptly is referred to as the hand-power characteristic curve.Change the size of crescent breach, just can adjust the hand-power characteristic curve, make it can bestly satisfy the requirement of using.
When chaufeur does not carry out steering operation, from the next hydraulic oil of power steerig pump (not shown), P mouth (a) from protecgulum (18) enters, by the aperture P(n on the screw rod sleeve pipe (3)) oil groove P(k on the steering screw (2)) the opening P(t of a steering control valve) the opening T(u of spline (p) steering control valve on the spool (4)) oil groove T(m on the steering screw (2)) aperture T(o on the screw rod sleeve pipe (3)) T mouth (b) on the protecgulum (18), get back to the steering oil reservoir (not shown).At this moment, epitrochoidal chamber A chamber (e) and B chamber (f) are respectively by the aperture A(g on the steering screw) and spool on aperture B(q), the aperture B(h on the steering screw) and spool on spline (p) communicate.
When chaufeur turning clockwise steering handwheel, spool (4) will order about steering screw (2) by torsion bar (5) and rotate, elasticity of torsion sex change because of torsion bar (5), make the relative steering screw (2) of spool (4) that an angular transposition be arranged, this has just closed steering control valve right openings P(t), with steering control valve right openings T(u), from the next hydraulic oil of power steerig pump, go up aperture P(n through the screw rod sleeve pipe (3) of the P mouth (a) on the protecgulum (18)) oil groove P(k on the steering screw (2)) steering control valve left side opening P(t) aperture A(g on spline (p) steering screw (2) on the spool (4)) arrive the A chamber, promote rack piston and be moved to the left; And the hydraulic oil that is squeezed in the B chamber, then the aperture B(h by steering screw (2)) aperture B(q on the spool (4)) spline (p) steering control valve left side opening T(u on the spool (4)) oil groove T(m on the steering screw (2)) aperture T(o on the screw rod sleeve pipe (3)) T mouth (b) revolution of a protecgulum (18) is to oil tank.
When chaufeur turns left steering handwheel, steering control valve left side opening P(t) and left side opening T(u) close, from the next hydraulic oil of power steerig pump, through the aperture P(n on P mouth (a) the screw rod sleeve pipe (3) of protecgulum (18)) oil groove P(k on the steering screw (2)) a steering control valve right openings P(t) aperture B(q on spline (p) spool (4) on the spool (4)) aperture B(h on the steering screw (2)) arrive B chamber (f), promote rack piston (10) and move right; And the hydraulic oil that lining, A chamber (e) is squeezed, then by the aperture A(g on the steering screw (2)) spline (p) steering control valve right openings T(u on the spool (4)) oil groove T(m on the steering screw (2)) aperture T(o on the screw rod sleeve pipe (3)) T mouth (b) revolution of a protecgulum (18) is to oil tank.
Above-mentioned working process illustrates, passes in and out the hydraulic oil in A chamber, all will pass through the through hole at steering screw (2) center.
Individual tapped bore A mouth (c) is arranged on steering gear housing (17), individual tapped bore B mouth (d) is arranged on lower cover (21), communicate with A of the present utility model chamber (e), B chamber (f) respectively, can be used for power cylinder in parallel, be applicable to the wheeled car that doube bridge turns to.
The above-mentioned novel structure of the utility model, the material very easily that can adopt domestic traditional handicraft and get is produced, deflector, steering control valve, power cylinder are more effectively combined, become a kind of more later-model integral automobile power steering, realize that motor turning is light, sensitive, the automobile straight-line travelling is stable, the easier self-aligning of steered wheel.
Description of drawings:
Fig. 1 is a main pseudosection of the present utility model;
Fig. 2 is that the C-C of Fig. 1 is to cutaway view;
Fig. 3 is the cutaway view of steering screw assembly;
Fig. 4 is tooth fan arm axle assembly figure;
Fig. 5 is the steering screw detail drawing;
Fig. 6 is a screw rod sleeve pipe detail drawing;
Fig. 7 is the spool detail drawing;
Fig. 8 is chaufeur principle of work scheme drawing of the present utility model when not carrying out steering operation;
Principle of work scheme drawing of the present utility model when Fig. 9 is chaufeur turning clockwise steering handwheel;
Figure 10 is chaufeur principle of work scheme drawing of the present utility model when turning left steering handwheel.
Among the figure, (1) steering screw assembly, (2) steering screw, (3) screw rod sleeve pipe, (4) spool, (5) torsion bar, (6) seal ring, (7) straight pin, (8) straight pin, (9) plane sliding bearing, (10) rack piston, (11) tooth fan arm axle assembly, (12) tooth fan arm axle, (13) trimming screw, (14) plane sliding bearing, (15) fixing plug screw, (16) solid tubulose plain bearing, (17) steering gear housing, (18) protecgulum, (19) protecgulum plug screw, (20) side cover, (21) lower cover, (a) P mouth, (b) T mouth, (c) A mouth, (d) B mouth, (e) A chamber, (f) B chamber, (g) aperture A, (h) aperture B, (i) crescent breach, (j) waist shaped hole, (k) oil groove P, (l) cutting edge, (m) oil groove T, (n) aperture P, (o) aperture T, (p) spline, (q) aperture B, (r) cutting edge, (s) pin-and-hole, (t) opening P, (u) opening T.
Claims (5)
1, a kind of rotary valve integral automobile power steering that does not have antifriction-bearing box, form by steering screw assembly (1), rack piston (10), tooth fan arm axle assembly (11), steering gear housing (17), protecgulum (18), side cover (20), lower cover (21), steering screw assembly (1) has steering screw (2), spool (4), torsion bar (5), seal ring (6), bearing (9), recirculating ball etc., tooth fan arm axle assembly (11) has tooth fan arm axle (12), trimming screw (13), bearing (16) etc., it is characterized in that:
1) steering screw (2) has a central through hole; There are six roads to become 60 ° of oil groove P (k), oil groove T (m) that uniform two is obstructed on the head of steering screw (2); Three uniform aperture A (g) of one circle and aperture B (h) are arranged respectively on the optical axis circumference at steering screw (2) two ends, apart from steering screw (2) afterbody three aperture A (g) and oil groove P (k), oil groove T (m) far away, on the axis projection of steering screw (2), become 30 ° dislocation; Screw rod sleeve pipe (3) fits snugly on the steering screw (2), and is resisted against on the shaft shoulder of steering screw (2) end, has formed the steering control valve valve pocket; On the external diameter of screw rod sleeve pipe (3), two each three uniform aperture P (n), aperture T (o) of circle are arranged, these six apertures on the axis projection of screw rod sleeve pipe (3), become 60 ° uniform, and face oil groove P (k), oil groove T (m) on the steering screw (2) respectively; The head elastic cover of steering screw (2) has six obstructed tooth rectangular splines of two on one section shaft extension that spool (4) is gone up, spool (4) is enclosed in steering screw (2) lining, straight pin (7) passes the waist shaped hole (j) of steering screw (2), and with spool (4) on pin-and-hole (s) flush fit; One end of the afterbody of steering screw (2) and torsion bar (5) fixes with straight pin (8), and the other end of spool (4) and torsion bar (5) then uses another straight pin (8) fixing;
2) axle journal at tooth fan arm axle (12) fan tooth two ends uses pipe shape plain bearing (16) to be bearing on steering gear housing (17) and the side cover (20) respectively;
3) on the protecgulum (18) a protecgulum plug screw (19) is arranged, be used for restriction and adjust the endplay of steering screw assembly (1), between steering screw assembly (1) and protecgulum (18), the protecgulum plug screw (19) plane sliding bearing (9) is arranged respectively in protecgulum (18);
4) have on the steering screw (2) on the both sides cell wall of oil groove P (k), oil groove T (m), the breach (i) of two symmetries is arranged.
2, deflector according to claim 1, it is characterized in that: the trimming screw (13) of tooth fan arm axle (12) has a big end, two end faces of big end are the plane, in the stomidium of tooth fan arm axle (12) plug screw (15) is arranged, be used for restriction and adjust the endplay of the big end of set screw (13) in tooth fan arm axle (12) stomidium, two planar end surfaces of the big end of set screw (13) are fanned between the arm axle (12) with plug screw (15) tooth a plane sliding bearing (14) respectively are housed.
3, deflector according to claim 1 is characterized in that: the material of pipe shape plain bearing (16) and plane sliding bearing (14) is the polyformaldehyde 3-layer composite material, and the material of plane sliding bearing (9) is the polytetrafluoroethylene 3-layer composite material.
4, deflector according to claim 1 is characterized in that: the oil groove P(k on the steering screw (2)), oil groove T(m) the breach (i) of two symmetries on the cell wall of both sides is the crescent breach.
5, deflector according to claim 1 is characterized in that: a screw A mouth (c) is arranged on the steering gear housing (17), a tapped bore B mouth (d) is arranged on the lower cover (21), can be used for power cylinder in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94202303 CN2190063Y (en) | 1994-01-22 | 1994-01-22 | Rolling valve integral automobile steering system without rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94202303 CN2190063Y (en) | 1994-01-22 | 1994-01-22 | Rolling valve integral automobile steering system without rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2190063Y true CN2190063Y (en) | 1995-02-22 |
Family
ID=33822110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94202303 Expired - Fee Related CN2190063Y (en) | 1994-01-22 | 1994-01-22 | Rolling valve integral automobile steering system without rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2190063Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404345C (en) * | 2006-08-16 | 2008-07-23 | 纪国庆 | Half-integral type automobile dynamic redirector |
| CN107140011A (en) * | 2016-10-09 | 2017-09-08 | 中国北方车辆研究所 | The sector shaft assembly and its device of a kind of driven steering device |
-
1994
- 1994-01-22 CN CN 94202303 patent/CN2190063Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404345C (en) * | 2006-08-16 | 2008-07-23 | 纪国庆 | Half-integral type automobile dynamic redirector |
| CN107140011A (en) * | 2016-10-09 | 2017-09-08 | 中国北方车辆研究所 | The sector shaft assembly and its device of a kind of driven steering device |
| CN107140011B (en) * | 2016-10-09 | 2019-04-26 | 中国北方车辆研究所 | A kind of the sector shaft assembly and its device of electric power steering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE ADDRESS; FROM: NO. 28-6, NANQIAOBEIHEYAN, DANYANG CITY, JIANGSU PROVINCE, 212300 TO: JIASHU YARD, ZHONGQINGQICHEYANJIU INSTITUTE, NO. 101, SHIQIAOPUZHAOTIAN VILLAGE, CHONGQING CITY, SICHUAN PROVINCE, 630039 |
|
| CP03 | Change of name, title or address |
Address after: 630039, Chongqing, Sichuan province Shiqiaopu Tian Village 101 Chongqing Automobile Research Institute Family Hospital Patentee after: Ji Guoqing Address before: 212300 Danyang city in Jiangsu Province South beiheyan No. 28-6 Patentee before: Ji Guoqing |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |