CN202953036U - Integrated gear-rack type electric steering device - Google Patents
Integrated gear-rack type electric steering device Download PDFInfo
- Publication number
- CN202953036U CN202953036U CN 201220643391 CN201220643391U CN202953036U CN 202953036 U CN202953036 U CN 202953036U CN 201220643391 CN201220643391 CN 201220643391 CN 201220643391 U CN201220643391 U CN 201220643391U CN 202953036 U CN202953036 U CN 202953036U
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- steering device
- rod assembly
- mechanical steering
- motor
- screw
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Abstract
The utility model provides an integrated gear-rack type electric steering device. The integrated gear-rack type electric steering device comprises a mechanical steering device, a motor-decelerator device, a first pull rod assembly and a second pull rod assembly, wherein a sensor capable of measuring a steering moment and a steering angle is mounted in the mechanical steering device; the motor-decelerator device comprises a brushless motor and a decelerator; the brushless motor comprises a coil and magnetic steel; the decelerator comprises a ball screw and a nut; the coil is fixedly connected with a shell; the magnetic steel is fixedly connected with the nut; and one end of the ball screw is connected with the mechanical steering device, and the other end of the ball screw is connected with the second pull rod assembly. The integrated gear-rack type electric steering device is capable of changing the moment into linear force and amplifying transmission force, can play a role of decelerating, can provide large output force and solves the problem that assistant steering force output by the electric mechanical steering device used in the existing large vehicle is relatively small can be solved.
Description
Technical field
The utility model relates to a kind of automobile steering device, is a kind of overall gear rack-and-pinion electric direction varying device.
Background technology
The structure of electric direction varying device at present commonly used is axle booster type electric steering column, the deflector of pinion and-rack miniature gears assisted electric, and this diverter structure is simple, but power output is little, multiplex in microminiature automobile and intermediate-size car; The reductor of above-mentioned electric direction varying device adopts DC machine by worm and gear, Motor torque to be amplified and changes directions of torque transfer, in the Oversize vehicle field, along with torque transfer increases, developed the electric direction varying device of multiple tooth bar power-assisted, but the various electrodynamic mechanical type deflectors of using on Oversize vehicle at present all can't be exported enough large power steering, are difficult to meet the actual demand of full size vehicle to power steering.
The utility model content
The purpose of this utility model is to provide a kind of overall gear rack-and-pinion electric direction varying device, it can be changed into moment of torsion straight line force and play deceleration effort, amplify the power of transmitting, thereby larger power output is arranged, can solve the less problem of electric direction varying device output power steering of using on current full size vehicle.
The utility model for achieving the above object, be achieved through the following technical solutions: comprise the mechanical steering device, motor-reducer arrangement, the first rod assembly and the second rod assembly, mechanical steering device and motor-reducer arrangement are arranged in housing, the first rod assembly is connected with the mechanical steering device, the mechanical steering device is connected with motor-reducer arrangement, motor-reducer arrangement is connected with the second rod assembly, in the mechanical steering device, installation can be measured the sensor of steering torque and steering angle, described motor-reducer arrangement is comprised of brushless motor and retarder, brushless motor comprises coil, magnet steel and position transduser, retarder comprises ball-screw and nut, inner tube is set in housing, inner tube is fixedly connected with housing, the inner tube periphery wall is installed coil, magnet steel is fixedly connected with nut by overcoat, position transduser is connected with magnet steel, ball-screw one end is connected with the mechanical steering device, the ball-screw other end is connected with the second rod assembly.Described mechanical steering device has input shaft, torsion bar, miniature gears, tooth bar and rack support device, miniature gears and tooth bar are meshed, tooth bar one end is connected with the ball-screw of mechanical steering device, the tooth bar other end is connected with the first rod assembly, tooth bar and leading screw can be one, it can be also split, the torsion bar upper end is connected with input shaft, the torsion bar lower end is connected with miniature gears, input shaft can drive the axial-rotation of miniature gears along miniature gears by torsion bar, and miniature gears can move by the length direction along tooth bar with carry-over bar.The rack support device has back-up block, and back-up block one end contacts with the heteropleural of tooth bar band tooth one side, and the back-up block other end is connected with an end of spring, and the spring other end arranges the adjustment plug screw, adjusts plug screw and is connected with housing by screw thread.Described overcoat is the different stepped sleeve pipe of two ends diameter, fixed installation magnet steel in the overcoat larger diameter end, and the overcoat smaller diameter end is fixedly connected with nut, and the overcoat smaller diameter end outside is connected with housing by double-range ball bearing.The overcoat larger diameter end is inboard to be connected with housing by the supplemental support ball-bearing casing.Sensor one end is connected with input shaft, and the other end is connected with the miniature gears upper end.
The electric direction varying device of this tooth bar power-assisted described in the utility model is different from the electric direction varying device of the existing tooth bar power-assisted in market, it is a kind of new gear rack-and-pinion electric direction varying device, be applicable to full size vehicle, brushless motor coordinates with screw-nut structure, moment of torsion can be changed into to straight line force and play deceleration effort and amplify the power of transmitting, thereby larger power output is arranged, be mainly used in medium-and-large-sized vehicle, the utility model is controlled by electric powered steering, the handling maneuver stability of deflector is largely increased, steering safety and reliability are ensured preferably, sensor described in the utility model can detect torque signal simultaneously again can the detection angles signal, after brushless motor obtains the torque signal and angle signal that sensor detects, by speed reduction gearing, make the utility model realize power steering, can reach and turn to light purpose, can make again wheel there is preferably initiatively return function simultaneously.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model; Fig. 2 is the sectional structure schematic diagram along the A-A line of Fig. 1; Fig. 3 is the structural representation of middle motor-reducer arrangement of Fig. 1.
Reference numeral: 1 mechanical steering device 2 motors-reducer arrangement 3 first rod assembly 4 input shaft 5 torsion bar 6 clutch shaft bearing 7 upper cover 8 sensor 9 miniature gears 10 second bearing 11 tooth bar 12 back-up block 13 needle bearing 14 housing 15 ball-screw 16 supplemental support ball-bearing casing 17 coil 18 magnet steel 19 overcoat 20 oil sealing 21 steel ball 22 nut 23 double-range ball bearing 24 side cover 25 spring 26 inner tubes 27 are adjusted plug screw 33 second rod assemblies.
The specific embodiment
A kind of overall gear rack-and-pinion electric direction varying device of the present utility model, comprise mechanical steering device 1, motor-reducer arrangement 2, the first rod assembly 3 and the second rod assembly 33, mechanical steering device 1 and motor-reducer arrangement 2 are arranged in housing 14, the first rod assembly 3 is connected with mechanical steering device 1, mechanical steering device 1 is connected with motor-reducer arrangement 2, motor-reducer arrangement 2 is connected with the second rod assembly 33, the interior installation of mechanical steering device 1 can be measured the sensor 8 of steering torque and steering angle, described motor-reducer arrangement 2 is comprised of brushless motor and retarder, brushless motor comprises coil 17, magnet steel 18 and position transduser, retarder comprises ball-screw 15 and nut 22, the interior inner tube 26 that arranges of housing 14, inner tube 26 is fixedly connected with housing 14, inner tube 26 periphery walls are installed coil 17, magnet steel 18 is fixedly connected with nut 22 by overcoat 19, position transduser is connected with magnet steel 18, ball-screw 15 1 ends are connected with mechanical steering device 1, ball-screw 15 other ends are connected with the second rod assembly 33.The electric direction varying device of this tooth bar power-assisted described in the utility model is different from the electric direction varying device of the existing tooth bar power-assisted in market, it is a kind of new gear rack-and-pinion electric direction varying device, be applicable to big-and-middle-sized vehicle, brushless motor and ball-screw nut respective outer side edges, moment of torsion can be changed into to straight line force and play deceleration effort and amplify the power of transmitting, thereby larger power output is arranged, be applied in medium-and-large-sized vehicle more.Control by electric powered steering, improve road-holding property, steering safety is reliable, brushless motor and ball-screw connection structure concision and compact, cheap for manufacturing cost.Sensor 8 can detect torque signal simultaneously again can the detection angles signal, brushless motor makes the utility model can realize turning to light, as can to realize again wheel active return function by speed reduction gearing after obtaining the torque signal and angle signal that sensor 8 detects.
Mechanical steering device 1 described in the utility model can adopt various structures, wherein preferred structure is: described mechanical steering device 1 has input shaft 4, torsion bar 5, miniature gears 9, tooth bar 11 and rack support device, miniature gears 9 and tooth bar 11 are meshed, tooth bar 11 1 ends are connected with the ball-screw 15 of mechanical steering device 1, tooth bar 11 other ends are connected with the first rod assembly 3, tooth bar 11 and leading screw 15 can be one, it can be also split, torsion bar 5 upper ends are connected with input shaft 4, torsion bar 5 lower ends are connected with miniature gears 9, input shaft 4 can drive the axial-rotation of miniature gears 9 along miniature gears 9 by torsion bar 5, miniature gears 9 can move by the length direction along tooth bar 11 with carry-over bar 11.With low cost, durability advantages of higher that this structure has.Certain mechanical steering device 1 described in the utility model also can adopt other various structures, and such as adopting the ball-and-worm steering system that is connected with input shaft etc., but these infrastructure costs are higher, and aspect durability with preferred structure gap to some extent.
Rack support device described in the utility model is for providing radial support power to tooth bar 11, guarantee that tooth bar 11 keeps engagement with miniature gears 9 constantly, for realizing this purpose, can realize by various structures, preferred structure is: the rack support device has back-up block 12, and back-up block 12 1 ends contact with the heteropleural of tooth bar 11 with tooth one side, and back-up block 12 other ends are connected with an end of spring 25, spring 25 other ends arrange adjusts plug screw 27, adjusts plug screw 27 and is connected with housing 14 by screw thread.This structure has advantages of that bearing force is stable, lasting and can be adjusted as required, certain rack support device described in the utility model also can adopt other multiple supporting constructions such as elastic filler, but the bearing force that these structures provide is stable not, and persistence is relatively poor, and can't be adjusted.
The utility model can firmly be connected with nut 22 in order to ensure magnet steel 18, can make magnet steel 18 be fixedly connected with nut 22 by overcoat 19.Simultaneously, the utility model for the volume that reduces motor-reducer arrangement 2, make the whole concision and compact of motor-reducer arrangement 2, described overcoat 19 can be made as to the different stepped sleeve pipe of two ends diameter, fixed installation magnet steel 18 in overcoat 19 larger diameter end, overcoat 19 smaller diameter end are fixedly connected with coupling nut 22, and the overcoat 19 smaller diameter end outsides are connected with housing 14 by double-range ball bearing 23.Wherein double-range ball bearing 23 also can be used double-row roller bearing.In addition, stability when the utility model rotates in order to strengthen overcoat 19, can make the inboard supplemental support ball-bearing casing 16 that passes through of overcoat 19 larger diameter end be connected with housing 14.
Claims (6)
1. an overall gear rack-and-pinion electric direction varying device, comprise mechanical steering device (1), motor-reducer arrangement (2), the first rod assembly (3) and the second rod assembly (33), it is characterized in that: mechanical steering device (1) and motor-reducer arrangement (2) are arranged in housing (14), the first rod assembly (3) is connected with mechanical steering device (1), mechanical steering device (1) is connected with motor-reducer arrangement (2), motor-reducer arrangement (2) is connected with the second rod assembly (33), the interior installation of mechanical steering device (1) can be measured the sensor (8) of steering torque and steering angle, described motor-reducer arrangement (2) is comprised of brushless motor and retarder, brushless motor comprises coil (17), magnet steel (18) and position transduser, retarder comprises ball-screw (15) and nut (22), inner tube (26) is set in housing (14), inner tube (26) is fixedly connected with housing (14), inner tube (26) periphery wall is installed coil (17), magnet steel (18) is fixedly connected with nut (22) by overcoat (19), position transduser is connected with magnet steel (18), ball-screw (15) one ends are connected with mechanical steering device (1), ball-screw (15) other end is connected with the second rod assembly (33).
2. a kind of overall gear rack-and-pinion electric direction varying device according to claim 1, it is characterized in that: described mechanical steering device (1) has input shaft (4), torsion bar (5), miniature gears (9), tooth bar (11) and rack support device, miniature gears (9) and tooth bar (11) are meshed, tooth bar (11) one ends are connected with the ball-screw (15) of mechanical steering device (1), tooth bar (11) other end is connected with the first rod assembly (3), tooth bar (11) and leading screw (15) can be one, it can be also split, torsion bar (5) upper end is connected with input shaft (4), torsion bar (5) lower end is connected with miniature gears (9), input shaft (4) can pass through torsion bar (5) and drive the axial-rotation of miniature gears (9) along miniature gears (9), miniature gears (9) can move by the length direction along tooth bar (11) with carry-over bar (11).
3. a kind of overall gear rack-and-pinion electric direction varying device according to claim 2, it is characterized in that: the rack support device has back-up block (12), back-up block (12) one ends contact with the heteropleural of tooth bar (11) with tooth one side, back-up block (12) other end is connected with an end of spring (25), spring (25) other end arranges adjusts plug screw (27), adjusts plug screw (27) and is connected with housing (14) by screw thread.
4. a kind of overall gear rack-and-pinion electric direction varying device according to claim 1, it is characterized in that: described overcoat (19) is the different stepped sleeve pipe of two ends diameter, fixed installation magnet steel (18) in overcoat (19) larger diameter end, overcoat (19) smaller diameter end is fixedly connected with nut (22), and overcoat (19) the smaller diameter end outside is connected with housing (14) by double-range ball bearing (23).
5. a kind of overall gear rack-and-pinion electric direction varying device according to claim 4 is characterized in that: overcoat (19) larger diameter end is inboard to be connected with housing (14) by supplemental support ball-bearing casing (16).
6. a kind of overall gear rack-and-pinion electric direction varying device according to claim 2, it is characterized in that: sensor (8) one ends are connected with input shaft (4), and the other end is connected with miniature gears (9) upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220643391 CN202953036U (en) | 2012-11-29 | 2012-11-29 | Integrated gear-rack type electric steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220643391 CN202953036U (en) | 2012-11-29 | 2012-11-29 | Integrated gear-rack type electric steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202953036U true CN202953036U (en) | 2013-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220643391 Expired - Fee Related CN202953036U (en) | 2012-11-29 | 2012-11-29 | Integrated gear-rack type electric steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202953036U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870667A (en) * | 2017-02-28 | 2017-06-20 | 安徽江淮汽车集团股份有限公司 | A kind of gap adjusting method and electric direction varying device |
| CN109080697A (en) * | 2017-06-14 | 2018-12-25 | 通用汽车环球科技运作有限责任公司 | For monitoring rack rails and the excessively mobile system and method for pinion gear transfer |
| CN110920746A (en) * | 2019-11-07 | 2020-03-27 | 开沃新能源汽车集团有限公司 | Electromagnetic linear nonlinear steer-by-wire device |
| CN110979448A (en) * | 2019-11-07 | 2020-04-10 | 开沃新能源汽车集团有限公司 | Linear nonlinear steer-by-wire |
-
2012
- 2012-11-29 CN CN 201220643391 patent/CN202953036U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870667A (en) * | 2017-02-28 | 2017-06-20 | 安徽江淮汽车集团股份有限公司 | A kind of gap adjusting method and electric direction varying device |
| CN109080697A (en) * | 2017-06-14 | 2018-12-25 | 通用汽车环球科技运作有限责任公司 | For monitoring rack rails and the excessively mobile system and method for pinion gear transfer |
| CN110920746A (en) * | 2019-11-07 | 2020-03-27 | 开沃新能源汽车集团有限公司 | Electromagnetic linear nonlinear steer-by-wire device |
| CN110979448A (en) * | 2019-11-07 | 2020-04-10 | 开沃新能源汽车集团有限公司 | Linear nonlinear steer-by-wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20211129 |