CN208665300U - A kind of novel active front steering system - Google Patents
A kind of novel active front steering system Download PDFInfo
- Publication number
- CN208665300U CN208665300U CN201820622690.8U CN201820622690U CN208665300U CN 208665300 U CN208665300 U CN 208665300U CN 201820622690 U CN201820622690 U CN 201820622690U CN 208665300 U CN208665300 U CN 208665300U
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- gear
- steering
- rack
- active front
- lead screw
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Abstract
The utility model discloses a kind of screw gear formula active front steering systems, a set of additional rotation angle device is provided on the basis of existing electric boosting steering system, driving gear and driven gear form deceleration mechanism, it is supported on respectively by bearing on the outer housing of deceleration mechanism, and driven gear can only cannot be moved axially relative to racks turn, the threaded one end of lead screw and driven gear cooperation, other end does not have screw thread, there is through-hole inside rack gear, lead screw is passed through from rack gear, motor is fixed on rack and pinion steering gear rack gear, motor output shaft is matched by external splines with driving gear internal splined hole.Cooperated by elements such as angle electrical machinery, gear type deceleration mechanism and nut-lead screws, completes active steering.
Description
Technical field
The present utility model belongs to Automotive Steering Technology field, is related to a kind of active front steering system.
Background technique
Currently, only active front wheel steering structure is the dual planetary gear that ZF company and German Bayerische Motorne Werke Aktiengeellschaft develop jointly
Formula active front wheel steering structure, as shown in Figure 1.The system is by hydraulic power-assisted steering part and two, double-planet variable ratio mechanism
It is grouped as.Wherein double-planet variable ratio mechanism includes: double freedom planetary gear set, worm and gear and helps angle electrical machinery, machine
Structure schematic diagram is as shown in Figure 2.Steering wheel is connected with input shaft 4, and angle electrical machinery 3 is helped to drive worm screw 1, so that worm gear 2 is driven, it is interior
Gear ring 11 constitutes the control of another freedom degree.Steering wheel and motor work are mutually indepedent, are independent of each other.
The principle of the active front steering system be by a mechanical driving device by motor power control and driver
It is combined with each other to the control of steering wheel, realizes the superposition of two control.If angle electrical machinery is helped not drive, driver can lead to
The go to action that steering wheel rotation realizes vehicle is crossed, is equal to 1 by transmission ratio by input shaft 6 to output shaft 10 and is exported, therefore,
When motor driver breaks down, which still ensures that the safety issue of vehicle.If driver not to steering wheel into
When row manipulation, angle electrical machinery can also be helped to realize active steering manipulation by control.If steering wheel and motor rotate simultaneously,
Realize the compound manipulation turned to, corner is overlapped, and realizes the double control of variable ratio and additional rotation angle.
Although BMW active front wheel steering can be realized variable ratio, it is built upon the base of hydraulic power-assisted steering technology
On plinth.For hydraulic power-assist steering system, that there are pipeline structures is complicated for it, needs to adjust hydraulic oil by servo mechanism
The deficiencies of input and output and hydraulic fluid leak and drawback.And existing electric boosting steering system can not achieve and actively turn
Change steering gear ratio to control and according to driving cycle, therefore devises a kind of novel active front steering system herein.
Summary of the invention
In order to overcome in existing BMW active front wheel steering technology because hydraulic power-assisted steering pipeline structure is complicated, hydraulic oil is let out
Reveal and servo mechanism is needed to adjust the drawbacks such as hydraulic oil input and output, the present utility model is in existing electric power steering system
A set of additional rotation angle device is provided on the basis of system, is matched by elements such as angle electrical machinery, gear type deceleration mechanism and nut-lead screws
It closes, completes active steering.
The technical scheme adopted by the invention is that: a kind of screw gear formula active front steering system, including it is electric boosted
Transfer, active front wheel steering device, two parts transfer are cooperated by rack and pinion steering gear, servo steering device
Including steering wheel, transmission shaft, assist motor, universal driving device, active front wheel steering device includes helping angle electrical machinery, driving tooth
Wheel, bearing, lead screw, driven gear, driving gear and driven gear form deceleration mechanism, the threaded one end of lead screw and driven tooth
Wheel cooperation, other end do not have screw thread, there is through-hole inside rack gear, and lead screw is passed through from rack gear, is fixed on rack and pinion steering
Motor on device rack gear can positive and negative rotation.
Above-mentioned screw gear formula active front steering system, the output shaft of motor pass through external splines and driving gear
Internal splined hole matches.
Above-mentioned screw gear formula active front steering system, the deceleration mechanism is by driving gear and driven gear structure
At driving gear and driven gear are supported on deceleration mechanism outer housing by bearing, and driven gear can only be relative to rack gear
It rotates and cannot move axially.
Above-mentioned screw gear formula active front steering system has screw thread in the driven tooth wheel bore, with lead screw internal screw thread
Cooperation.
Above-mentioned screw gear formula active front steering system, there is through-hole inside the steering gear rack, and lead screw is from through-hole
In pass through.
Above-mentioned screw gear formula active front steering system, the both ends of the lead screw pass through bulb respectively and turn to horizontal drawing
Bar is connected, and is supported in the inner hole of rack gear by a pair of bearings.
Above-mentioned screw gear formula active front steering system, the internal screw thread of the driven gear and the external screw thread shape of lead screw
At cooperation.
The invention has the advantages that the utility model active front steering system is in existing electric boosting steering system machine
Increase a set of additional rotation angle device in tool structure basis, it is multiple effectively to avoid fluid pressure line in BMW active front steering system
Miscellaneous, hydraulic oil is revealed and servo mechanism is needed to adjust the drawbacks such as hydraulic oil input and output, while effectively eliminating existing electronic
Servo steering system the steering can not be achieved control and according to driving cycle change steering gear ratio defect.It will be comprising helping corner electric
Rack and pinion steering gear is arranged in the additional rotation angle device of the elements such as motivation, gear type deceleration mechanism and nut-lead screw
Between rack gear and track rod, it is convenient to realize active steering, while especially structure is simple, still be able to achieve change transmission
Than the double control with additional rotation angle, while the utility model is easy to be reequiped on real vehicle.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is utility model diagram；
Fig. 2 is the structural schematic diagram of active front wheel steering device part in Fig. 1；
1. steering wheel in figure, 2. steering shafts, 3. assist motors, 4. universal driving devices, 5. rack and pinion steering gears
Gear, the rack gear of 6. rack and pinion steering gears, 7. help angle electrical machinery, 8. deceleration mechanism driving gears, 9. deceleration mechanism driven tooths
Wheel, 10. lead screws, 11. wheels, 12. bearings, 13. track rods.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
First part:
Screw gear formula active front steering system includes electric power steering apparatus and active front wheel steering device, electronic
Servo steering device includes steering wheel, assist motor, universal driving device, and active front wheel steering device includes helping angle electrical machinery 7,
Driving gear 8, bearing 12, lead screw 10, driven gear 9, rack gear 6.Wherein driving gear 8 and driven gear 9 form speed reducer
There is screw thread in one end that structure, lead screw 10 and driven gear 9 cooperate, and other end does not have screw thread, there is through-hole inside rack gear 6, lead screw
10 pass through from rack gear 6, and the motor 7 being fixed on rack and pinion steering gear rack gear 6 can realize steering system with positive and negative rotation
Variable ratio and additional rotation angle.
The output shaft of motor 7 is matched by external splines with the internal splined hole of driving gear 8.In driving gear 8 and hole
Threaded driven gear 9 constitutes deceleration mechanism, and be supported on the outer housing of deceleration mechanism by bearing 12 (does not have respectively in figure
Draw), and driven gear 9 can only cannot be moved axially relative to racks turn.There is through-hole in the inside of steering gear rack 6,
Lead screw 10 extends there through, and the both ends of lead screw 10 pass through bulb respectively and are connected with track rod, and are supported on by a pair of bearings
In the inner hole of rack gear 6.Meanwhile the external screw thread of the internal screw thread of driven gear 9 and lead screw 10 forms and cooperates.
Second part:
When needing strict implement driver to act on the corner on front-wheel, steering wheel rotation and motor 7 does not work.By
It is each attached on rack gear 6 in the outer housing of motor and deceleration mechanism, and driving gear 8 and driven gear 9 pass through bearing
It is supported on the outer housing of deceleration mechanism, the relative positional relationship between lead screw 10 and rack gear 6 immobilizes at this time, so lead screw
10 can move with the transverse movement of rack gear 6, and then the track rod by being attached thereto drives front-wheel to realize steering.
When needing to realize that variable ratio or active front wheel steering are intervened, motor 7 is powered while steering wheel rotation, drives
Dynamic deceleration mechanism --- driving gear 8 and driven gear 9, driven gear 9 are cooperated by internal screw thread and lead screw 10 by motor 7
It is converted into the axial movement of lead screw 10, the relative positional relationship between lead screw 10 and rack gear 6 is changed at this time, in turn
It attached an axial movement in the transverse movement of rack gear 6, have the function that change front wheel angle, realize variable ratio and vehicle
Active steering function.The difference is that needing to be determined in advance the difference and rack shaft of transmission ratio when realizing variable ratio
To the relationship between movement.
When needing to realize that variable ratio and active steering are intervened simultaneously, control system by after two kinds of relationships superpositions to motor
It is driven.To which variable ratio and active steering intervention be achieved in a like fashion, structure is simple, only need to be from software
Double control can be completed in upper adjustment.
Claims (7)
1. a kind of novel active front steering system, including electric power steering apparatus, active front wheel steering device, feature exist
In: electric power steering apparatus is connected with active front wheel steering device by rack and pinion steering gear, which turns
It is made of to device rack gear (6) and gear (5), steering wheel (1), steering shaft (2), assist motor (3), universal driving device (4) group
At electric power steering apparatus be connected with the gear (5) of rack and pinion steering gear, active front wheel steering device passes through gear
The rack gear (6) of rack-type steering gear and gear (5) cooperate, driving gear (8) and driven gear (9) in active front wheel steering device
Deceleration mechanism is formed, there is screw thread in one end that lead screw (10) and driven gear (9) cooperate, and other end does not have screw thread, lead screw
(10) it is passed through from rack gear (6), is fixed on rack and pinion steering gear rack gear (6) and helps angle electrical machinery (7) can positive and negative rotation.
2. novel active front steering system according to claim 1, which is characterized in that help the output of angle electrical machinery (7)
Axis is matched by external splines with the internal splined hole of driving gear (8).
3. novel active front steering system according to claim 1 or 2, which is characterized in that the driving gear (8) with
Driven gear (9) constitutes deceleration mechanism, is supported on the outer housing of deceleration mechanism by bearing (12) respectively, and driven gear
(9) it can only cannot be moved axially relative to racks turn.
4. novel active front steering system according to claim 3, which is characterized in that in driven gear (9) hole
There is screw thread.
5. novel active front steering system according to claim 4, which is characterized in that the steering gear rack (6)
There is through-hole in inside.
6. novel active front steering system according to claim 5, which is characterized in that the lead screw (10) is therefrom worn
It crosses, the both ends of lead screw (10) pass through bulb respectively and are connected with track rod, and are supported on the interior of rack gear (6) by a pair of bearings
Kong Zhong.
7. novel active front steering system according to claim 6, which is characterized in that the driven gear (9) it is interior
Screw thread and the external screw thread of lead screw (10), which are formed, to be cooperated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820622690.8U CN208665300U (en) | 2018-04-27 | 2018-04-27 | A kind of novel active front steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820622690.8U CN208665300U (en) | 2018-04-27 | 2018-04-27 | A kind of novel active front steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208665300U true CN208665300U (en) | 2019-03-29 |
Family
ID=65821817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820622690.8U Expired - Fee Related CN208665300U (en) | 2018-04-27 | 2018-04-27 | A kind of novel active front steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208665300U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466598A (en) * | 2019-08-28 | 2019-11-19 | 安徽德孚转向***股份有限公司 | Electric boosting steering system assist motor deceleration mechanism |
| CN112816444A (en) * | 2021-01-28 | 2021-05-18 | 孙卉 | Plastic product fixed-point detection device |
| CN113044108A (en) * | 2021-03-22 | 2021-06-29 | 刘跃 | Auxiliary stabilizing device of direct current motor electric steering control system |
-
2018
- 2018-04-27 CN CN201820622690.8U patent/CN208665300U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466598A (en) * | 2019-08-28 | 2019-11-19 | 安徽德孚转向***股份有限公司 | Electric boosting steering system assist motor deceleration mechanism |
| CN112816444A (en) * | 2021-01-28 | 2021-05-18 | 孙卉 | Plastic product fixed-point detection device |
| CN112816444B (en) * | 2021-01-28 | 2021-08-17 | 佛山市恒信功成塑料有限公司 | Plastic product fixed-point detection device |
| CN113044108A (en) * | 2021-03-22 | 2021-06-29 | 刘跃 | Auxiliary stabilizing device of direct current motor electric steering control system |
| CN113044108B (en) * | 2021-03-22 | 2022-07-12 | 广州市瑞宝电器有限公司 | Auxiliary stabilizing device of direct current motor electric steering control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210525 Address after: 810b, building B, building 4, Nanjing Baixia high tech Industrial Park, No.6 Yongzhi Road, Qinhuai District, Nanjing City, Jiangsu Province, 210000 Patentee after: Nanjing kulinmei Electromechanical Technology Co.,Ltd. Address before: Longpan road Xuanwu District of Nanjing city in Jiangsu province 210037 No. 159 auto and Traffic Engineering Institute of Nanjing Forestry University Patentee before: NANJING FORESTRY University |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190329 |
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| CF01 | Termination of patent right due to non-payment of annual fee |