CN1978265B - Steering angle transmission ratio adjustable steering system - Google Patents
Steering angle transmission ratio adjustable steering system Download PDFInfo
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- CN1978265B CN1978265B CN2005100222915A CN200510022291A CN1978265B CN 1978265 B CN1978265 B CN 1978265B CN 2005100222915 A CN2005100222915 A CN 2005100222915A CN 200510022291 A CN200510022291 A CN 200510022291A CN 1978265 B CN1978265 B CN 1978265B
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- clutch plate
- roller
- disc spacing
- spacing pressing
- driving disc
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Abstract
This invention discloses a turning system with adjustable drive ratio of the turning angle including a turning pipe column driving the steering wheel to rotate and a turning device controlling angles of wheels, in which, an angle drive ratio adjustment unit is set between the turning pipe column and the redirector, the system also includes a control device used in controlling the angle drive ratio greater than 1 at low speed and less than 1 at high speed, which realizes the requirement of sensitive turning at low speed and stability at high speed, and controls the angle drive ratio of the turning system stepless-adjustable according to real time speed signals and rev signals of the engine.
Description
[technical field]
The present invention relates to a kind of automobile steering system, specifically a kind ofly can adjust the steering swivel system angular gear ratio, with the steering swivel system of realizing vehicle the best is controlled.
[background technology]
Steering swivel system is an important component part in the car chassis system, and its effect is to control wheel according to the rotation of bearing circle to rotate with certain angular gear ratio, thereby control vehicle turns to.Safety when so steering swivel system relates to vehicle handling and stability and driving.
Most existing steering swivel system angular gear ratio is non-adjustable, and promptly after the steering swivel system design was finished, the deflection angle transmitting ratio had also just immobilized.Along with modern automobile continuous advancement in technology and development, the requirement of stability when such steering swivel system turns to sensitivity and high speed in the time of can't having satisfied modern vehicle to low speed, when for example low speed is parked, hope is rotated with less bearing circle and is obtained bigger wheel steering angle, wishes that promptly the angular gear ratio of steering swivel system is less; And when running at high speed, wish that then angular gear ratio is too not little, cause the automobile offset track a lot of to avoid slight bearing circle to rotate.
A kind of deflector of variable ratio has also appearred now, its principle is to realize that by process the tooth that becomes modulus on tooth bar different steering angles has different deflection angle transmitting ratios, but this tooth bar processing technology is difficulty relatively, in addition, the deflector that becomes the modulus tooth bar is housed, just realized vehicle under different wheel corner situation, have different deflection angle transmitting ratios (as wheel steering angle hour---promptly approaching during with vehicle straight-line travelling situation, the deflection angle transmitting ratio is bigger, guarantee the stability of straight-line travelling, when wheel steering angle is big, the deflection angle transmitting ratio is less, so the requirement of riding stability when this deflector turns to sensitivity and high speed when fundamentally not solving vehicle low speed.
[summary of the invention]
Main purpose of the present invention is exactly in order to solve prior art problems, provide a kind of deflection angle transmitting ratio adjustable steering swivel system, when low speed, reduce the angular gear ratio of steering swivel system, the requirement of Vehicular turn sensitivity when hastening to realize hanging down, during high speed, increase the deflection angle transmitting ratio, when realizing high speed to the requirement of vehicle stability.
Of the present invention time a purpose just provides the adjustable steering swivel system of a kind of deflection angle transmitting ratio, according to the angular gear ratio of the speed of a motor vehicle and motor speed control steering swivel system, makes the deflection angle transmitting ratio stepless adjustable.
For achieving the above object, the invention discloses the adjustable steering swivel system of a kind of deflection angle transmitting ratio, comprise and be used for transmission direction dish steering column that rotates and the deflector that is used to control wheel steering angle, between steering column and deflector, be provided with the angular gear ratio regulating mechanism, also comprise control setup, described control setup is used for the operating angle variable-gearing mechanism, and transmitting ratio is greater than 1 when low speed, and transmitting ratio is less than 1 when high speed.Angular gear ratio is less than 1 when low speed thereby make steering swivel system, and angular gear ratio is greater than 1 when high speed.The angular gear ratio of steering system is meant the corner of steering handwheel and the ratio of the corner of homonymy steering swivel herein, is the relation of input specific output.The transmitting ratio of angular gear ratio regulating mechanism is meant the ratio of the angle that angle that output shaft turns over and input shaft turn over, and is the relation of output than input.
Described angular gear ratio regulating mechanism comprises driving disc spacing pressing, no-load voltage ratio driving device and clutch plate, the input end of described driving disc spacing pressing is connected with the lower shaft of steering column, and mouth is connected with the input end of clutch plate by the no-load voltage ratio driving device, the mouth of described clutch plate is connected with the input end of deflector, the different transmitting ratio of described control setup control no-load voltage ratio driving device output.
Preferred version is: described driving disc spacing pressing and clutch plate face mutually and along same central axis setting, the axle center that its relative side all has with central axis is the circular groove in the center of circle, and the cross sectional shape of described circular groove is a circular shape; Described no-load voltage ratio driving device comprises roller, and described roller is arranged between the circular groove of driving disc spacing pressing and clutch plate and is positioned at central axis the same side.
The circular groove surface of described driving disc spacing pressing and clutch plate, roller surface are rough surface; Or circular groove surface, the roller surface of driving disc spacing pressing and clutch plate are provided with identical groove.
Wherein preferred version is: described driving disc spacing pressing and clutch plate equal and opposite in direction, described roller are two or three, are arranged on equably with respect to central axis between the circular groove of driving disc spacing pressing and clutch plate.
Described no-load voltage ratio driving device also comprises rotating shaft, described roller can around self rotational be installed in the rotating shaft, described control setup is used for control rotating shaft and rotates and makes roller have different leaning angles in the circular groove of driving disc spacing pressing and clutch plate.
Described control setup comprises motor, and the mouth of described motor is coupled to rotating shaft.
Another improvement of the present invention is that described control setup also comprises signal processing unit, and described signal processing unit response vehicle speed signal and engine rotational speed signal output control signals to motor after treatment.
The invention has the beneficial effects as follows: 1) this programme is by being provided with the angular gear ratio regulating mechanism between steering column and deflector, can have different transmitting ratios according to different speed of a motor vehicle operating angle variable-gearing mechanisms, when low speed, the transmitting ratio of angular gear ratio regulating mechanism is greater than 1, rotate with less bearing circle and to obtain bigger wheel steering angle, thus the requirement of Vehicular turn sensitivity when realizing low speed.During high speed, the angular gear ratio of angular gear ratio regulating mechanism is less than 1, rotate with bigger bearing circle and obtain less wheel steering angle, thereby when realizing high speed to the requirement of vehicle stability.2) signal processing unit is according to real-time vehicle speed signal and engine rotational speed signal, control motor rotating certain angle, thereby the angle of inclination of control roller in the circular groove of driving disc spacing pressing and clutch plate, can change the distance of the contact point of roller on two circular grooves of principal and subordinate, thereby change angular gear ratio to driving and driven disk center axis.Because of the leaning angle of roller can change continuously, so angular gear ratio is stepless adjustable.
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the structural representation of the angular gear ratio regulating mechanism of an embodiment of the present invention;
Fig. 2 is the scheme of installation of roller among Fig. 1;
Fig. 3 is that the transmitting ratio of angular gear ratio regulating mechanism of Fig. 1 is greater than 1 position view;
Fig. 4 is the position view that the transmitting ratio of the angular gear ratio regulating mechanism of Fig. 1 equals 1;
Fig. 5 is that the transmitting ratio of angular gear ratio regulating mechanism of Fig. 1 is less than 1 position view.
[specific embodiment]
Specific embodiment one, as shown in Figure 1 is the stepless angular gear ratio regulating mechanism of a kind of mechanical rollers formula scheme drawing, and driving disc spacing pressing 1 is connected on the lower shaft Zhou Duan of steering column by input shaft, and clutch plate 2 is connected on the deflector input shaft by output shaft.Input shaft and driving disc spacing pressing 1 are installed driving disc spacing pressing 1 and clutch plate 2 equal and opposite in directions with clutch plate 2 and output shaft along same central axis 16.For making driving disc spacing pressing 1 and clutch plate 2 coaxial and guarantee that the stability of rotating, the axle of clutch plate 2 are inserted into the axle core of driving disc spacing pressing 1 and free to rotate, or the axle sleeve of clutch plate 2 is outer also free to rotate at the axle of driving disc spacing pressing 1.Respectively have circular groove 101,201 on the relative side of driving disc spacing pressing 1 and clutch plate 2, the cross sectional shape of circular groove 101,201 is a circular shape.The no-load voltage ratio driving device comprises 3,4 and two rotating shafts of two rollers (promptly going up axle 5 and lower shaft 12), each roller is all installed between the circular groove 101,201 of driving disc spacing pressing 1 and clutch plate 2, central axis 16 intersects but each roller is all got along well, and promptly roller can not stride across central axis 16 again to circular groove 201 from circular groove 101.Two rollers are installed symmetrically with respect to central axis 16, the surperficial closed contact of the surface of roller and circular groove.Certainly roller can also be three or four, evenly is installed between the circular groove 101,201 of driving disc spacing pressing 1 and clutch plate 2.The quantity of increase roller can increase the driving force between the master and slave Moving plate, but number of rollers is too many, can increase design-calculated complexity and cost again, so roller is that two or three are better.As shown in Figure 2, roller 3 is installed on the axle 5 by needle bearing 6 and back-up ring 7, and roller 3 can be rotated around himself axis 3a.Last axle input gear 8 is installed on the axle 5 by spline, and when 8 rotations of last input gear, axle 5 rotations in the drive drive the axis generation different inclination angle of roller 3 along last axle 5 simultaneously.Roller 4 is installed in the same way on lower shaft 12, and is rotatable around self axis 4a.The circular groove surface of driving disc spacing pressing 1 and clutch plate 2, roller 3,4 surfaces are rough surface, roller 3,4 by friction force with the Motion Transmission of driving disc spacing pressing 1 to clutch plate 2; Also comprise shell and holddown spring 13, described holddown spring 13 1 ends are against on the shell, the other end is against the outside of clutch plate 2, holddown spring 13 moves with whole angular gear ratio regulating mechanism, rely on the elastic force of holddown spring 13, with driving disc spacing pressing 1, roller 3 and 4, clutch plate 2 force together tightly, to guarantee the needed friction force of driving torque.Roller can also be in other way be delivered to clutch plate with motion from driving disc spacing pressing, processes identical groove at roller and principal and subordinate's Moving plate contact surface, by the transmitting movement that is meshing with each other of groove.
When steering wheel rotation, steering column drives input shaft and driving disc spacing pressing 1 rotates around central axis 16, by the anchor ring on the driving disc spacing pressing 1 101, rely on friction force between the two to drive roller 3 and 4 axis 3a and 4a rotations, thereby drive clutch plate 2 and output shaft rotate around central axis around himself.Clutch plate 2 and output shaft drive deflector again and rotate, and realize handling maneuver.Change the angle of inclination of roller 3 and 4, can change the distance of the contact point of roller 3 and 4 on two circular grooves of principal and subordinate, thereby change the transmitting ratio of angular gear ratio regulating mechanism to central axis 16.As shown in Figure 3, for transmitting ratio greater than 1 operating mode, the contact point of roller 3,4 in circular groove 101 is away from central axis 16, contact point in circular groove 201 is near central axis 16, driving disc spacing pressing can make clutch plate obtain bigger corner with less corner, so the transmitting ratio of this state greater than 1, has influence on whole steering swivel system, can reduce the angular gear ratio of steering swivel system.Be illustrated in figure 4 as the operating mode that transmitting ratio equals 1, the distance of the contact point decentering axis 16 of roller 3,4 in circular groove 101,102 equates.Be illustrated in figure 5 as transmitting ratio less than 1 operating mode, the contact point of roller 3,4 in circular groove 101 is near central axis 16, and the contact point in circular groove 201 is away from central axis 16.
Control setup comprises signal processing unit and motor, signal processing unit can be realized by vehicle-mounted computer, stepless adjustable for realizing angular gear ratio, vehicle-mounted computer is according to the hand of rotation and the anglec of rotation of vehicle speed signal and engine rotational speed signal control motor 11, rotatablely moving of motor 11 is coupled to the input gear 8 of axle, and input gear 8 drives the input gear 10 of lower shaft again.The drive of 11 pairs of input gears 8 of motor, can be driving gear 15 direct and input gear 8 engagements of motor 11, also can pass through gear transmission, for example the driving gear 15 of motor transmits on the ring gear 14 that is engaged with, ring gear 14 is installed on the same axle with miniature gears 9, both rotating speeds are identical, transmit motion to axle input gear 8 and lower shaft input gear 10 by miniature gears 9 again, transmitting ratio between ring gear 14 and motor driving gear 15 and last axle input gear 8 and the miniature gears 9 is greater than 1, increase with the reduction of speed of realizing motor and to turn round, last axle input gear 8 is identical with lower shaft input gear 10 numbers of teeth, to guarantee that axle 5 and lower shaft 12 have identical corner, Motion Transmission is to last axle input gear 8 and lower shaft input gear 10, two gears drive axle 5 respectively and lower shaft 12 rotates around its axis, thereby make roller 3 and 4 produce the inclination angle, change input shaft and the interaxle transmitting ratio of output, thereby change the angular gear ratio of steering swivel system.As when the speed of a motor vehicle is low, the corner of vehicle-mounted computer control motor 11 and turning to makes roller 3 and 4 reach state among Fig. 3, has reduced the angular gear ratio of steering swivel system, and it is more flexible that vehicle is turned to when low speed.When the speed of a motor vehicle was higher, the corner of vehicle-mounted computer control motor 11 and turning to made roller 3 and 4 reach state among Fig. 5, has increased the angular gear ratio of steering swivel system, makes vehicle more stable when running at high speed.
In the foregoing description, axle 5 is coupled in the rotation of motor 11 and lower shaft 12 can also come transmission by belt.
Specific embodiment two, angular gear ratio regulating mechanism comprise driving disc spacing pressing and clutch plate, and driving disc spacing pressing is connected on the lower shaft Zhou Duan of steering column by input shaft, and clutch plate is connected on the deflector input shaft by output shaft.Driving disc spacing pressing is the dish of diameter unanimity, clutch plate comprise diameter greater than, be equal to or less than three kinds of drive plates of driving disc spacing pressing diameter, the principle of utilization change speed gear box, the clutch plate of three kinds of diameters of control setup control one of them with driving disc spacing pressing by gear mesh or belt drive, thereby realize adjustable transmitting ratio.
Control setup among the embodiment two can also be a kind of simple control, three button switchs can be set on the automobile guidance panel, be respectively transmitting ratio greater than 1, equal 1 and, the big angular gear ratio of steering swivel system when the less angular gear ratio of the steering swivel system when being directed to low speed respectively, normal angular gear ratio and high speed less than 1.During in pressing three switches one, this switch produces a level signal and gives control setup, and control setup is that the operating angle variable-gearing mechanism provides corresponding transmitting ratio.The angular gear ratio regulating mechanism transmitting ratio of this kind mode is not stepless adjustable.
Claims (6)
1. adjustable steering swivel system of deflection angle transmitting ratio, comprise and be used for transmission direction dish steering column that rotates and the deflector that is used to control wheel steering angle, between steering column and deflector, be provided with angular gear ratio regulating mechanism and control setup, described angular gear ratio regulating mechanism comprises driving disc spacing pressing, no-load voltage ratio driving device and clutch plate, the input end of described driving disc spacing pressing is connected with the lower shaft of steering column, and mouth is connected with the input end of clutch plate by the no-load voltage ratio driving device, the mouth of described clutch plate is connected with the input end of deflector, described driving disc spacing pressing and clutch plate mutually in the face of and along same central axis setting, the axle center that its relative side all has with central axis is the circular groove in the center of circle, and the cross sectional shape of described circular groove is a circular shape; Described no-load voltage ratio driving device comprises roller, described roller is arranged between the circular groove of driving disc spacing pressing and clutch plate, described control setup be used for the operating angle variable-gearing mechanism when low speed transmitting ratio greater than 1, transmitting ratio is less than 1 when high speed, it is characterized in that: described no-load voltage ratio driving device also comprises axle, lower shaft, a lower shaft input gear and an input gear of going up that is installed in axle by spline, the described axle of going up, be separately installed with roller on the lower shaft, described roller can be around self rotational, described control setup comprises motor, described motor rotates and is coupled to the described axle input gear of going up, the described axle input gear of going up drives described lower shaft input gear, rotates by described upward axle of driven by motor and lower shaft to make described roller have different leaning angles between the circular groove of driving disc spacing pressing and clutch plate.
2. steering swivel system as claimed in claim 1 is characterized in that: the circular groove surface of described driving disc spacing pressing and clutch plate, roller surface are rough surface.
3. steering swivel system as claimed in claim 2 is characterized in that: also comprise shell and holddown spring, described holddown spring one end is against on the shell, and the other end is against the outside of clutch plate.
4. steering swivel system as claimed in claim 1 is characterized in that: circular groove surface, the roller surface of described driving disc spacing pressing and clutch plate are provided with identical groove.
5. steering swivel system as claimed in claim 1 is characterized in that: described driving disc spacing pressing and clutch plate equal and opposite in direction, described roller are two or three, are arranged on equably with respect to central axis between the circular groove of driving disc spacing pressing and clutch plate.
6. steering swivel system as claimed in claim 1 is characterized in that: described control setup also comprises signal processing unit, and described signal processing unit response vehicle speed signal and engine rotational speed signal output control signals to motor after treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100222915A CN1978265B (en) | 2005-12-08 | 2005-12-08 | Steering angle transmission ratio adjustable steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100222915A CN1978265B (en) | 2005-12-08 | 2005-12-08 | Steering angle transmission ratio adjustable steering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1978265A CN1978265A (en) | 2007-06-13 |
| CN1978265B true CN1978265B (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100222915A Active CN1978265B (en) | 2005-12-08 | 2005-12-08 | Steering angle transmission ratio adjustable steering system |
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| Country | Link |
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| CN (1) | CN1978265B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874300B (en) * | 2012-09-30 | 2015-02-25 | 吉林大学 | Active steering transmission device of an active steering system of automotive front wheel |
| CN107235070B (en) * | 2016-03-28 | 2020-09-01 | 长城汽车股份有限公司 | Steering transmission ratio control method and control device, steering system and vehicle |
| CN110155155A (en) * | 2019-04-25 | 2019-08-23 | 徐工集团工程机械有限公司 | A kind of wire-controlled steering system and fire fighting truck |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3412622A (en) * | 1966-02-24 | 1968-11-26 | English Electric Co Ltd | Variable-ratio frictional drives |
| GB1179840A (en) * | 1968-10-31 | 1970-02-04 | Ferranti Ltd | Improvements relating to speed changing mechanisms |
| US5489004A (en) * | 1994-03-18 | 1996-02-06 | Honda Giken Kogyo Kabushiki Kaisha | Variable ratio steering system |
| CN1485235A (en) * | 2002-07-30 | 2004-03-31 | �����Զ�����ʽ���� | Vehicle steering apparatus |
| CN1629027A (en) * | 2003-12-17 | 2005-06-22 | 现代自动车株式会社 | Variable steering gear ratio apparatus and method using the same |
-
2005
- 2005-12-08 CN CN2005100222915A patent/CN1978265B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3412622A (en) * | 1966-02-24 | 1968-11-26 | English Electric Co Ltd | Variable-ratio frictional drives |
| GB1179840A (en) * | 1968-10-31 | 1970-02-04 | Ferranti Ltd | Improvements relating to speed changing mechanisms |
| US5489004A (en) * | 1994-03-18 | 1996-02-06 | Honda Giken Kogyo Kabushiki Kaisha | Variable ratio steering system |
| CN1485235A (en) * | 2002-07-30 | 2004-03-31 | �����Զ�����ʽ���� | Vehicle steering apparatus |
| CN1629027A (en) * | 2003-12-17 | 2005-06-22 | 现代自动车株式会社 | Variable steering gear ratio apparatus and method using the same |
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| Publication number | Publication date |
|---|---|
| CN1978265A (en) | 2007-06-13 |
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