CN104627234A - Automobile active steering coupling device capable of achieving variable transmission ratio and steering system - Google Patents
Automobile active steering coupling device capable of achieving variable transmission ratio and steering system Download PDFInfo
- Publication number
- CN104627234A CN104627234A CN201510072115.6A CN201510072115A CN104627234A CN 104627234 A CN104627234 A CN 104627234A CN 201510072115 A CN201510072115 A CN 201510072115A CN 104627234 A CN104627234 A CN 104627234A
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- CN
- China
- Prior art keywords
- gear
- steering
- planetary gear
- gear ring
- coupling device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/04—Steering gears mechanical of worm type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
Abstract
The invention discloses an automobile active steering coupling device capable of achieving the variable transmission ratio and a steering system. The automobile active steering coupling device comprises a mechanical transmission device and a power drive device. The mechanical transmission device comprises a planetary gear train I and a planetary gear train II, wherein the planetary gear train I and the planetary gear train II are arranged in parallel, a gear ring I in the planetary gear train I and a planet carrier II in the planetary gear train II are connected together, a manual input portion is input to the planetary gear train I through a sun gear I, a displacement assisting motor input portion is delivered to a planet carrier I through a worm wheel and a worm and is input to the planetary gear train I, and the planet carrier I and the sun gear I conduct input at the same time, and output is conducted through the gear ring I. The planet carrier II is fixedly arranged, the planet carrier II inputs movement into the planetary gear train II, and finally outward output is conducted through a sun gear II. The automobile active steering coupling device is small in overall structure, the installation space is saved, and arrangement is convenient; the variable-transmission-ratio steering is achieved, the number of gear shifting changes is large, the transmission efficiency is high, the steering stability is high, the failure rate is low, reliability is high, and the control process is more flexible.
Description
Technical field
The invention belongs to automobile steering system field, be specifically related to a kind of the automobile active steering coupling device and the steering swivel system that realize variable ratio.
Background technology
Along with developing rapidly of automotive technology, the reliability of vehicle, safety and traveling comfort become vehicle enterprise development must faced by problem.The overall performance of performance on vehicle of wheel steering system has important impact, therefore more and more receives the concern of people.The electric hydaulic power steering system that Automotive Steering Technology successively experienced by traditional mechanical type steering swivel system, hydraulic power-assist steering system, Electrically controlled hydraulic steering system are applied till now is unified electric boosting steering system.But said system all can not or more difficultly be implemented active correction according to running conditions of vehicle to the requirement of road-holding property and controlled, can not compensate the maloperation that turns to of chaufeur, thus fail to make its maximum effect of performance of the steering swivel system the closest with road-holding property.The study hotspot of our times forefront then concentrates on handling and that safety is more excellent steering technique of new generation---active front steering system.
" active steering " refers to: except the steering operation of chaufeur, and automobile self also has turning function, namely by the adjustment initiatively to wheel turning angle, improves the stability of vehicle, active safety and handling comfort.Active front steering system mainly contains two profiles formula at present: mechanical type superposition turns to and steering-by-wire.
Summary of the invention
In view of this, the object of the present invention is to provide that a kind of size is less, safety is high and be convenient to the variable transmission ratio steering device for automobile active steering arranged and automobile steering system.
For achieving the above object, the invention provides following technical scheme: a kind of automobile active steering coupling device realizing variable ratio, comprise mechanical drive and Power Drive Unit, described mechanical drive comprises the planet circular system I and planet circular system II that are set up in parallel, and described Power Drive Unit comprises and helps displacement motor, intermeshing worm gear and worm screw; Described planet circular system I forms primarily of input shaft, sun wheel I, pinion carrier I, satellite gear I and gear ring I, described worm gear empty set is on input shaft, described input shaft one end is connected with sun wheel I, described pinion carrier I one end is connected on worm gear, the other end is connected with satellite gear I, and described satellite gear I engages with sun wheel I and gear ring I respectively; Described planet circular system II forms primarily of output shaft, sun wheel II, pinion carrier II, satellite gear II and gear ring II, described sun wheel II is connected with output shaft, described pinion carrier II is arranged on gear ring I, described satellite gear II is arranged in pinion carrier II, described gear ring II is fixed on vehicle body, and described satellite gear II engages with sun wheel II and gear ring II respectively.
Further, also comprise end cap, described end cap correspondence is fixed on the end face of gear ring I and gear ring II
Further, described planet circular system I is single planetary gear structure; Described planet circular system II is double planetary gear structure.
The present invention also provides a kind of automobile steering system, comprise the steering handwheel, torsion bar, turbine and worm decelerator, universal-joint, steering operation mechanism rack and the rack and pinion steering gear that connect setting from top to bottom successively, also comprise the automobile active steering coupling device that can realize variable ratio, described steering operation mechanism rack is arranged on input shaft, described input shaft is connected with steering handwheel by universal-joint, and described output shaft is connected with rack and pinion steering gear by universal-joint.
Beneficial effect of the present invention is: this steering hardware integral structure is less, has saved installing space greatly, is convenient to arrange; By arranging the power coupling of mechanical drive and Power Drive Unit, achieving variable ratio and turning to; Adopt mechanical type superposition to turn to, steering stability is good, failure rate is low, reliability are high, and manipulation process is more flexible; Adopt the form that single planetary gear structure combines with double planetary gear structure, integral structure driving efficiency is high, the change of gear number is many, good manufacturability, manufacturing expense are low, gear shift is steady, maneuvering performance is good.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is the structural representation of the automobile active steering coupling device that can realize variable ratio;
Fig. 2 is the structure diagram of Fig. 1;
Fig. 3 is the structural representation of automobile steering system.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in the figure, the automobile active steering coupling device of the realized variable ratio in the present embodiment, comprise mechanical drive and Power Drive Unit, described mechanical drive comprises the planet circular system I and planet circular system II that are set up in parallel, and described Power Drive Unit comprises and helps displacement motor, intermeshing worm gear 2 and worm screw 3; Described planet circular system I forms primarily of input shaft 1, sun wheel I 11, pinion carrier I 4, satellite gear I 5 and gear ring I 6; Described worm gear 2 empty set is on input shaft 1, and described input shaft 1 one end is connected with sun wheel I 11, and described pinion carrier I 4 one end is connected on worm gear 2, and the other end is connected with satellite gear I 5, and described satellite gear I 5 engages with sun wheel I 11 and gear ring I 6 respectively; Described planet circular system II forms primarily of output shaft 9, sun wheel II 12, pinion carrier II 13, satellite gear II 8 and gear ring II 7, described sun wheel II 12 is connected with output shaft 9, described pinion carrier II 13 is arranged on gear ring I 6, described satellite gear II 8 is arranged in pinion carrier II 13, described gear ring II 7 is fixed on vehicle body, and described satellite gear II 8 engages with sun wheel II 12 and gear ring II 7 respectively.
In the present embodiment, gear ring I 6 in planet circular system I links together with the pinion carrier II 13 in planet circular system II, displacement motor is helped to drive worm screw 3 to rotate, and then worm screw 3 drives worm gear 2 to rotate, pinion carrier I 4 is connected with worm gear 2, and the worm gear 2 of rotation drives satellite gear I 5 to rotate by pinion carrier I 4; On the other hand, the steering effort of manually input drives sun wheel I 11 to rotate, and sun wheel I 11 engages with satellite gear I 5, and satellite gear I 5 engages with gear ring I 6 again, and gear ring I 6 obtains from the steering effort manually inputting and help displacement motor.Gear ring I 6 and pinion carrier II 13 are connected, and the steering effort on gear ring I 6 is passed to pinion carrier II 13; Planet circular system II in the present embodiment is double planetary gear structure, engage each other between two satellite gears II 8, a satellite gear II 8 engages with gear ring II 7 simultaneously, another satellite gear II 8 engages with sun wheel II 12, gear ring II 7 is fixed on vehicle body, transmission of power to sun wheel II 12, finally exports from output shaft 9 by satellite gear II 8.
Also comprise end cap 10 in the present embodiment, described end cap 10 correspondence is fixed on the end face of gear ring I 6 and gear ring II 7; Can be used for sealing, prevent from entering foreign material between pitch wheel.
As the further improvement of such scheme, described planet circular system I is single planetary gear structure; Described planet circular system II is double planetary gear structure; Concrete, in planet circular system II, engage each other between two satellite gears II 8, a satellite gear II 8 also engages with gear ring II 7, and another satellite gear II 8 engages with sun wheel II 12; The advantages such as integral structure has simply closely, driving efficiency is high, the change of gear number is many, good manufacturability, manufacturing expense are low, gear shift is steady, maneuvering performance is good.
The present invention also provides a kind of automobile steering system, comprise the steering handwheel 14, torsion bar 15, turbine and worm decelerator 16, universal-joint 17, steering operation mechanism rack 18 and the rack and pinion steering gear 19 that connect setting from top to bottom successively, also comprise the automobile active steering coupling device that can realize variable ratio, described steering operation mechanism rack 18 is arranged on input shaft 1, described input shaft 1 is connected with steering handwheel 14 by universal-joint 17, and described output shaft 9 is connected with rack and pinion steering gear 19 by universal-joint.
Concrete, the automobile active steering coupling device that can realize variable ratio is installed between car steering wheel 14 and rack and pinion steering gear 19, and the variable ratio that can realize automobile turns to.Its steering procedure is:
Manual input (steering handwheel 14 inputs) part inputs to first order planet circular system (planet circular system I) by input shaft 1 to the sun wheel I 11 be attached thereto; Displacement motor importation is helped to be passed to pinion carrier I 4 through worm gear 2, worm screw 3 and to be input to first order planet circular system; In first order planet circular system, pinion carrier I 4 and sun wheel I 11 input simultaneously, and are exported by gear ring I 6.Gear ring I 6 and pinion carrier II 13 are connected, motion on gear ring I 6 is inputed in second stage planet circular system (planet circular system II) by pinion carrier II 13, gear ring II 7 is fixed on vehicle body, pinion carrier II 13 is externally exported by sun wheel II 12, and then is realized turning to by rack and pinion steering gear 19.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (4)
1. one kind can realize the automobile active steering coupling device of variable ratio, it is characterized in that: comprise mechanical drive and Power Drive Unit, described mechanical drive comprises the planet circular system I and planet circular system II that are set up in parallel, and described Power Drive Unit comprises and helps displacement motor, intermeshing worm gear and worm screw; Described planet circular system I forms primarily of input shaft, sun wheel I, pinion carrier I, satellite gear I and gear ring I, described worm gear empty set is on input shaft, described input shaft one end is connected with sun wheel I, described pinion carrier I one end is connected on worm gear, the other end is connected with satellite gear I, and described satellite gear I engages with sun wheel I and gear ring I respectively; Described planet circular system II forms primarily of output shaft, sun wheel II, pinion carrier II, satellite gear II and gear ring II, described sun wheel II is connected with output shaft, described pinion carrier II is arranged on gear ring I, described satellite gear II is arranged in pinion carrier II, described gear ring II is fixed on vehicle body, and described satellite gear II engages with sun wheel II and gear ring II respectively.
2. the automobile active steering coupling device realizing variable ratio according to claim 1, is characterized in that: also comprise end cap, and described end cap correspondence is fixed on the end face of gear ring I and gear ring II.
3. the automobile active steering coupling device realizing variable ratio according to claim 1, is characterized in that: described planet circular system I is single planetary gear structure; Described planet circular system II is double planetary gear structure.
4. an automobile steering system, comprise the steering handwheel, torsion bar, turbine and worm decelerator, universal-joint, steering operation mechanism rack and the rack and pinion steering gear that connect setting from top to bottom successively, it is characterized in that: the automobile active steering coupling device also comprising the realized variable ratio as described in any one of claim 1-3, described steering operation mechanism rack is arranged on input shaft, described input shaft is connected with steering handwheel by universal-joint, and described output shaft is connected with rack and pinion steering gear by universal-joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072115.6A CN104627234A (en) | 2015-02-11 | 2015-02-11 | Automobile active steering coupling device capable of achieving variable transmission ratio and steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072115.6A CN104627234A (en) | 2015-02-11 | 2015-02-11 | Automobile active steering coupling device capable of achieving variable transmission ratio and steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104627234A true CN104627234A (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510072115.6A Pending CN104627234A (en) | 2015-02-11 | 2015-02-11 | Automobile active steering coupling device capable of achieving variable transmission ratio and steering system |
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| CN (1) | CN104627234A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684245A (en) * | 2020-12-31 | 2022-07-01 | 比亚迪股份有限公司 | Steering system, control method of steering system, and vehicle |
| CN114872784A (en) * | 2022-06-21 | 2022-08-09 | 太原理工大学 | Differential speed variable transmission ratio device and method and automobile steering system applying same |
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| US6179083B1 (en) * | 1997-11-14 | 2001-01-30 | Toyota Jidosha Kabushiki Kaisha | Steering apparatus for vehicle |
| CN101016057A (en) * | 2006-12-12 | 2007-08-15 | 北京航空航天大学 | Variable-gear-ratio satellite gear type diverter |
| CN101244725A (en) * | 2008-03-13 | 2008-08-20 | 华南理工大学 | Active steering transmission device of active steering system of vehicle |
| CN101293532A (en) * | 2007-04-26 | 2008-10-29 | 日产自动车株式会社 | Variable gear ratio steering apparatus |
| CN202011420U (en) * | 2011-04-22 | 2011-10-19 | 南京航空航天大学 | Electric power-assisted steering system with real-time variable transmission ratio |
| CN202431846U (en) * | 2011-11-25 | 2012-09-12 | 比亚迪股份有限公司 | Variable-transmission-ratio transmission device and automotive steering system with same |
| CN104214279A (en) * | 2013-05-30 | 2014-12-17 | 株式会社万都 | Reducer including planetary gear and steering apparatus for vehicle including the same |
-
2015
- 2015-02-11 CN CN201510072115.6A patent/CN104627234A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6179083B1 (en) * | 1997-11-14 | 2001-01-30 | Toyota Jidosha Kabushiki Kaisha | Steering apparatus for vehicle |
| CN101016057A (en) * | 2006-12-12 | 2007-08-15 | 北京航空航天大学 | Variable-gear-ratio satellite gear type diverter |
| CN101293532A (en) * | 2007-04-26 | 2008-10-29 | 日产自动车株式会社 | Variable gear ratio steering apparatus |
| CN101244725A (en) * | 2008-03-13 | 2008-08-20 | 华南理工大学 | Active steering transmission device of active steering system of vehicle |
| CN202011420U (en) * | 2011-04-22 | 2011-10-19 | 南京航空航天大学 | Electric power-assisted steering system with real-time variable transmission ratio |
| CN202431846U (en) * | 2011-11-25 | 2012-09-12 | 比亚迪股份有限公司 | Variable-transmission-ratio transmission device and automotive steering system with same |
| CN104214279A (en) * | 2013-05-30 | 2014-12-17 | 株式会社万都 | Reducer including planetary gear and steering apparatus for vehicle including the same |
Non-Patent Citations (1)
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| 徐炜: "汽车主动前轮转向系统研究", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684245A (en) * | 2020-12-31 | 2022-07-01 | 比亚迪股份有限公司 | Steering system, control method of steering system, and vehicle |
| CN114684245B (en) * | 2020-12-31 | 2023-12-12 | 比亚迪股份有限公司 | Steering system, control method of steering system, and vehicle |
| CN114872784A (en) * | 2022-06-21 | 2022-08-09 | 太原理工大学 | Differential speed variable transmission ratio device and method and automobile steering system applying same |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150520 |