CN208411865U - A kind of link-type four-wheel steering mechanism - Google Patents
A kind of link-type four-wheel steering mechanism Download PDFInfo
- Publication number
- CN208411865U CN208411865U CN201820816339.2U CN201820816339U CN208411865U CN 208411865 U CN208411865 U CN 208411865U CN 201820816339 U CN201820816339 U CN 201820816339U CN 208411865 U CN208411865 U CN 208411865U
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- Prior art keywords
- pull rod
- link
- steering section
- steering
- hinged
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Abstract
The utility model provides a kind of link-type four-wheel steering mechanism, belongs to Automotive Steering Technology field.The technical issues of drag link mechanism needs that it solves existing steering mechanism are additionally supported at middle part, are unfavorable for chassis arrangement.This link-type four-wheel steering mechanism includes front axle and rear axle, the end of front axle is equipped with front steering section, phase the same end of rear axle is hinged with rear steering section, there is active pull rod on front steering section, one end of active pull rod and intermediate bar is hinged, the other end of intermediate bar is hinged with passive pull rod, the end of passive pull rod is fixedly connected with the driving gear being pivotally mounted in rear axle, it is fixed with driven gear on rear steering section, rear steering section can be driven to rotate and being meshed with driven gear when the rotation of sliding tooth wheel.In addition this link-type four-wheel steering mechanism in vehicle body design support member and need not keep overall structure more compact.
Description
Technical field
The utility model belongs to Automotive Steering Technology field, is related to a kind of link-type four-wheel steering mechanism.
Background technique
As automobile is constantly popularized, the control technology and overall performance of automobile are gradually being promoted.The wherein steering of automobile
Technology occupies great status in chassis control part, it directly determines the maneuverability and ride comfort of automobile.Four-wheel steering technology
It can be described as a spotlight of steering technique, people deepen continuously about the research on four-wheel steering control technology direction.Mesh
Preceding four-wheel steering technology is widely used on some heavy vehicles and racing car, also few uses on general car.Four-wheel
The birth of steering technique is considered as that can compare favourably with traction control system TCS, anti-lock braking system(ABS) ABS with epoch-making
Automotive engineering revolution of meaning can greatly promote maneuverability, stability, safety and the comfort of vehicle, change
The future of oversize vehicle, and be expected to become in following several years oversize vehicle it is most popular choose to install one of part.
Authorization Notice No. is that the Chinese patent of CN202225905U discloses a kind of novel four-wheel steering electric tour bus,
The steering wheel assembly of steering mechanism on a wherein tie point for forerunner's axis and the Synchronous pull rod and rear-guard axis wherein one are connect
It is respectively equipped with knuckle arm on point, three sections of steering linkage connections are equipped between two knuckle arm, which is in " Z "
Font arrangement, one section of in-between steering linkage is fixed on the bracket on chassis by pivot pin, and this section of steering linkage can be somebody's turn to do
It is rotated centered on pivot pin.
Above-mentioned steering mechanism's structure is simple, can be realized preferable turning efficiency, but still comes with some shortcomings: drag link mechanism
It needs additionally to be supported at middle part, is unfavorable for chassis arrangement.
Summary of the invention
The utility model aiming at the above problems existing in the prior art, provides a kind of link-type four-wheel steering mechanism, this
Utility model the technical problem to be solved is that: how to improve support arrangement structural compactness and ensure turning efficiency.
The purpose of this utility model can be realized by the following technical scheme:
A kind of link-type four-wheel steering mechanism, including front axle and rear axle, the end of the front axle are equipped with forward
Xiang Jie, phase the same end and the rear steering section of the rear axle are hinged, and have active pull rod, the active on the front steering section
One end of pull rod and intermediate bar is hinged, which is characterized in that the other end of the intermediate bar is hinged with passive pull rod, the quilt
The end of dynamic pull rod is fixedly connected with the driving gear being pivotally mounted in rear axle, is fixed with driven tooth on the rear steering section
Wheel can drive rear steering section to rotate when the rotation of sliding tooth wheel and being meshed with driven gear.
Then the knuckle that front axle is installed in automotive steering is deflected certain angle by steering wheel steering-effecting
Realize the steering operation of front-wheel, the rotation of front steering section will drive active pull rod while deflect, so that intermediate bar be pulled to move, passes through
The inverse angular deflection of rear-wheel is realized in intermediate bar and the interaction of rear steering section, is reduced the turning radius of automobile in this way, is improved motor-driven
Property.It is hinged by the other end and passive pull rod that intermediate bar is arranged, and make passive pull rod and may be rotatably mounted at the drive of rear axle
Moving gear is fixedly connected with, and intermediate bar will drive passive pull rod and rotate in same direction with front-wheel, then passes through fixed on rear steering section and driving
The driven gear of gear engagement, in this way the two relative rotation direction are opposite, and rotation section backwards rotation, improves mobility after realization,
And gear and driven gear design will be driven to be designed at the region of rear axle in this way, it is not necessary in addition in vehicle body design support member and
Keep overall structure more compact.
In a kind of above-mentioned link-type four-wheel steering mechanism, the front axle includes front steering track-rod, the front steering
The end of pull rod is hinged with the front steering section, and the rear axle includes crossbeam and trapezoidal pull rod, the rear steering section and institute
It states crossbeam to be hinged, the end of the trapezoidal pull rod is connected with the rear steering section.By the way that front steering track-rod is arranged in front axle,
Crossbeam and trapezoidal pull rod are set in rear axle, such front steering track-rod can coordinate synchronous turn of the wheel at both ends with trapezoidal pull rod
To can be realized the effect of four-wheel steering, ensure good mobility, crossbeam can provide preferable support for driving gear, protect
Hinder structural stability.
In a kind of above-mentioned link-type four-wheel steering mechanism, the rear steering section is mutually cut with scissors by pin shaft with the crossbeam
It connects, thrust ball bearing is equipped between the rear steering section and crossbeam.Be hinged by setting rear steering section by pin shaft and crossbeam and
Thrust ball bearing is set between rear steering section and crossbeam, greatly reduces the friction system between rear steering section and crossbeam in this way
Number avoids the driving force of driving gear insufficient and the extending structure service life.
In a kind of above-mentioned link-type four-wheel steering mechanism, bushing is equipped between the pin shaft and rear steering section.Into one
Bushing is arranged in step between pin shaft and rear steering section, reduces frictional dissipation of the rear steering section in rotation between pin shaft in this way,
It has saved cost and has made to turn to more smooth.
In a kind of above-mentioned link-type four-wheel steering mechanism, the top surface of the crossbeam is rotatably mounted to be had and is vertically arranged
Support shaft, the driving geared sleeve are set to the periphery of support shaft and are mutually clamped with support shaft, and the upper end of the support shaft is radially passed through
It wears the end of the passive pull rod and is mutually clamped with passive pull rod.The height and position of driving gear will be matched with driven gear,
By the way that vertical support shaft, the in this way arrangement convenient for driving gear are arranged in cross rail top, the upper end of support shaft is set radially
Through passive pull rod end and be mutually clamped with passive pull rod, and make support shaft simultaneously with driving gear be mutually clamped, dismounting maintenance
It is more convenient.Preferably, rolling bearing is arranged between support shaft outer peripheral surface and crossbeam, the rotation of sliding tooth wheel is substantially reduced
Frictional resistance.
In a kind of above-mentioned link-type four-wheel steering mechanism, the driven gear be located at the pin shaft and driving gear it
Between, the driven gear is fan-shaped.It is fan-shaped by the way that driven gear to be set between pin shaft and driving gear to and designed driven gear,
The space hold of driven gear can be reduced in this way, shorten driven gear to the distance of pin shaft, pass through moment loading in this way, when driven
Gear, which rotates lesser distance, can be achieved the big displacement rotation of rear steering section, improve steering sensitivity.
In a kind of above-mentioned link-type four-wheel steering mechanism, the lenth ratio of the passive pull rod and active pull rod is 7
~50.Through the lenth ratio of the passive pull rod of setting and active pull rod in 7~50 ranges, such active pull rod quilt when turning to
The deflection angle of dynamic pull rod can be maintained in lesser range, be conducive to the space layout of automobile chassis.
Compared with prior art, as follows the advantages of the utility model:
1, this link-type four-wheel steering mechanism is hinged by the other end of setting intermediate bar and passive pull rod, and makes passively to draw
Bar is fixedly connected with the driving gear that may be rotatably mounted at rear axle, and intermediate bar will drive passive pull rod and rotate in same direction with front-wheel, then
By fixing the driven gear engaged with driving gear on rear steering section, the two relative rotation direction in this way is opposite, after realization
Rotation section backwards rotation improves mobility, and gear and driven gear design will be driven to be designed at the region of rear axle in this way, no
In addition in vehicle body design support member and overall structure must be kept more compact.
2, this link-type four-wheel steering mechanism is by being arranged the lenth ratio of passive pull rod and active pull rod in 7~50 ranges
Interior, such active pull rod deflection angle of passive pull rod when turning to can be maintained in lesser range, be conducive to automobile bottom
The space layout of disk.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of front axle.
Fig. 2 is the partial structural diagram of another angle of front axle.
Fig. 3 is the schematic diagram of the section structure of rear axle.
Fig. 4 is the partial structural diagram of another angle of rear axle.
In figure, 1, front axle；11, front steering track-rod；
2, rear axle；21, crossbeam；22, trapezoidal pull rod；23, support shaft；
3, front steering section；31, active pull rod；
4, rear steering section；5, intermediate bar；6, passive pull rod；7, gear is driven；8, driven gear；
9, pin shaft；91, thrust ball bearing；92, bushing.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figs 1-4, this link-type four-wheel steering mechanism includes front axle 1 and rear axle 2, the end peace of front axle 1
Equipped with front steering section 3, phase the same end and the rear steering section 4 of rear axle 2 are hinged, and have active pull rod 31 on front steering section 3, main
Dynamic pull rod 31 and one end of intermediate bar 5 are hinged, and the other end of intermediate bar 5 is hinged with passive pull rod 6, the end of passive pull rod 6
Portion is fixedly connected with the driving gear 7 being pivotally mounted in rear axle 2, and driven gear 8 is fixed on rear steering section 4, works as driving
Gear 7 can drive rear steering section 4 to rotate and being meshed with driven gear 8 when rotating.1 institute of front axle in automotive steering
The knuckle of installation is deflected certain angle by steering wheel steering-effecting and then realizes the steering operation of front-wheel, and 3 turns of front steering section
It is dynamic to will drive active pull rod 31 while deflecting, so that intermediate bar 5 be pulled to move, interacted by intermediate bar 5 and rear steering section 4
It realizes the inverse angular deflection of rear-wheel, reduces the turning radius of automobile in this way, improve mobility.Pass through the another of setting intermediate bar 5
End and passive pull rod 6 are hinged, and are fixedly connected with passive pull rod 6 with the driving gear 7 that may be rotatably mounted at rear axle 2, intermediate bar 5
It will drive passive pull rod 6 to rotate in same direction with front-wheel, then by fixing the driven tooth engaged with driving gear 7 on rear steering section 4
Wheel 8, in this way the two relative rotation direction are opposite, and rotation section backwards rotation, improves mobility after realization, and will drive gear in this way
7 and driven gear 8 conceive and be designed at the region of rear axle 2, it is not necessary in addition in vehicle body design support member and make overall structure more
Step up to gather.For further, front axle 1 includes front steering track-rod 11, and end and 3 phase of front steering section of front steering track-rod 11 are cut with scissors
Connect, rear axle 2 includes crossbeam 21 and trapezoidal pull rod 22, and rear steering section 4 is hinged with crossbeam 21, the end of trapezoidal pull rod 22 and this
Rear steering section 4 is connected.By the way that front steering track-rod 11 is arranged in front axle 1, crossbeam 21 and trapezoidal pull rod are set in rear axle 2
22, such front steering track-rod 11 and trapezoidal pull rod 22 can coordinate that the wheel at both ends is synchronous to be turned to, and can be realized four-wheel steering
Effect, ensures good mobility, and crossbeam 21 can provide preferable support for driving gear 7, ensure structural stability.It is passive to draw
The lenth ratio of bar 6 and active pull rod 31 is 7~50.By be arranged the lenth ratio of passive pull rod 6 and active pull rod 31 7~
In 50 ranges, such active pull rod 31 deflection angle of passive pull rod 6 when turning to can be maintained in lesser range, favorably
In the space layout of automobile chassis.
As shown in Figure 3, Figure 4, rear steering section 4 is hinged by pin shaft 9 with crossbeam 21, the rear steering section 4 and crossbeam 21 it
Between be equipped with thrust ball bearing 91.It is hinged by setting rear steering section 4 by pin shaft 9 and crossbeam 21 and in rear steering section 4 and cross
Thrust ball bearing 91 is set between beam 21, greatly reduces the coefficient of friction between rear steering section 4 and crossbeam 21 in this way, avoids driving
The driving force of moving gear 7 is insufficient and the extending structure service life.Preferably, being equipped with bushing 92 between pin shaft 9 and rear steering section 4.Into
Bushing 92 is arranged in one step between pin shaft 9 and rear steering section 4, reduces the rubbing between pin shaft 9 in rotation of rear steering section 4 in this way
It wears consumption, saved cost and makes to turn to more smooth.
As shown in figure 4, the top surface of crossbeam 21 is rotatably mounted the support shaft 23 being vertically arranged, driving gear 7 is sheathed on
The periphery of support shaft 23 and with 23 phase of support shaft be clamped, the upper end of the support shaft 23 extend radially through the end of passive pull rod 6 and
It is clamped with passive 6 phase of pull rod.The height and position of driving gear 7 will be matched with driven gear 8, by being arranged at the top of crossbeam 21
The upper end of vertical support shaft 23, the in this way arrangement convenient for driving gear 7, setting support shaft 23 extends radially through passive pull rod 6
End and with passive 6 phase of pull rod be clamped, and make support shaft 23 simultaneously with driving 7 phase of gear clamping, dismounting maintenance it is more convenient.
Preferably, rolling bearing is arranged between 23 outer peripheral surface of support shaft and crossbeam 21, the friction that driving gear 7 rotates is substantially reduced
Resistance.
As shown in Fig. 2, driven gear 8 is located between pin shaft 9 and driving gear 7, the driven gear 8 is fan-shaped.Passing through will
Driven gear 8 is set between pin shaft 9 and driving gear 7 and designs that driven gear 8 is fan-shaped, can reduce driven gear 8 in this way
Space hold shortens the distance that driven gear 8 arrives pin shaft 9, in this way by moment loading, when driven gear 8 rotate it is lesser away from
Big displacement rotation from achievable rear steering section 4, improves steering sensitivity.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (7)
1. a kind of link-type four-wheel steering mechanism, including front axle (1) and rear axle (2), the end installation of the front axle (1)
Have front steering section (3), phase the same end and the rear steering section (4) of the rear axle (2) are hinged, and have on the front steering section (3)
Have active pull rod (31), the active pull rod (31) and one end of intermediate bar (5) are hinged, which is characterized in that the intermediate bar
(5) the other end is hinged with passive pull rod (6), the end of the passive pull rod (6) and is pivotally mounted on rear axle (2)
Driving gear (7) be fixedly connected with, be fixed with driven gear (8) on the rear steering section (4), when drive gear (7) rotation when energy
Rear steering section (4) are driven to rotate and being meshed with driven gear (8).
2. link-type four-wheel steering mechanism according to claim 1, which is characterized in that the front axle (1) includes forward
To pull rod (11), the end of the front steering track-rod (11) is hinged with the front steering section (3), and the rear axle (2) includes
Crossbeam (21) and trapezoidal pull rod (22), the rear steering section (4) are hinged with the crossbeam (21), the trapezoidal pull rod (22)
End is connected with the rear steering section (4).
3. link-type four-wheel steering mechanism according to claim 2, which is characterized in that the rear steering section (4) passes through pin
Axis (9) is hinged with the crossbeam (21), is equipped with thrust ball bearing (91) between the rear steering section (4) and crossbeam (21).
4. link-type four-wheel steering mechanism according to claim 3, which is characterized in that the pin shaft (9) and rear steering section
(4) bushing (92) are equipped between.
5. according to link-type four-wheel steering mechanism described in Claims 2 or 3 or 4, which is characterized in that the top of the crossbeam (21)
Face is rotatably mounted a support shaft (23) being vertically arranged, driving gear (7) be sheathed on the periphery of support shaft (23) and with
Support shaft (23) is mutually clamped, and the upper end of the support shaft (23) extends radially through the end of the passive pull rod (6) and draws with passive
Bar (6) is mutually clamped.
6. link-type four-wheel steering mechanism according to claim 3 or 4, which is characterized in that the driven gear (8) is located at
Between the pin shaft (9) and driving gear (7), the driven gear (8) is fan-shaped.
7. link-type four-wheel steering mechanism according to claim 1 or 2 or 3 or 4, which is characterized in that the passive pull rod
It (6) is 7~50 with the lenth ratio of active pull rod (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820816339.2U CN208411865U (en) | 2018-05-29 | 2018-05-29 | A kind of link-type four-wheel steering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820816339.2U CN208411865U (en) | 2018-05-29 | 2018-05-29 | A kind of link-type four-wheel steering mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208411865U true CN208411865U (en) | 2019-01-22 |
Family
ID=65113342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820816339.2U Active CN208411865U (en) | 2018-05-29 | 2018-05-29 | A kind of link-type four-wheel steering mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208411865U (en) |
-
2018
- 2018-05-29 CN CN201820816339.2U patent/CN208411865U/en active Active
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