CN202765086U - Electric power steering system - Google Patents
Electric power steering system Download PDFInfo
- Publication number
- CN202765086U CN202765086U CN 201220454492 CN201220454492U CN202765086U CN 202765086 U CN202765086 U CN 202765086U CN 201220454492 CN201220454492 CN 201220454492 CN 201220454492 U CN201220454492 U CN 201220454492U CN 202765086 U CN202765086 U CN 202765086U
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- Prior art keywords
- planet row
- steering system
- wheel
- clutch
- electric boosting
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Abstract
The utility model relates to an electric power steering system, and firstly provides a novel double planet wheel transmission mechanism. Two sun wheels are adopted, wherein one sun wheel is connected with an input shaft, and the other sun wheel is connected with an output shaft. A first inner tooth ring can be controlled to rotate, and a second inner tooth ring is fixed. Then, a high-low speed steering auxiliary mechanism is arranged on the double planet wheel transmission mechanism. The auxiliary mechanism conducts restriction or releases restriction to the rotation of a first planet wheel through a clutch according to the speed of a car. The electric power steering system can automatically shift working conditions according to instructions of a driver and the driving cycles of the car, and enable the car to achieve the sheering features that low-speed sheering is light and flexible, and medium-speed and high-speed sheering is simple and stable. Moreover, the electric power steering system is simple in systematic structure and convenient to operate.
Description
Technical field
The utility model relates to the Vehicle Engineering technical field, especially a kind of car electric boosting steering system.
Background technology
At present, the steering swivel system that uses on the vehicle, major part is Electro-Hydraulic Power Steering System, small part is electric boosting steering system.The electric-controlled hydraulic steering swivel system, hydraulic pipeline structure is complicated, volume is large, cost is high, should not arrange, and has the hydraulic oil leakage problem, becomes potential safety hazard.And electric boosting steering system only provides power-assisted, and cornering properties but changes with the speed of a motor vehicle, steering wheel angle, and driving performance is not high.
Application number is the steering swivel system that 200810026772.7 Chinese patent file " active steering transmission device of active steering system of vehicle " has disclosed several machineries and electronic combination, to solve the unsafe problem of simple electric power steering.But several schemes that provide in the above-mentioned patent document are no matter be that high-speed cruising or low cruise all are that straight speed turns to, and driving performance is not high.
The utility model content
The purpose of this utility model provides a kind of electric boosting steering system, can't be in the problem of low speed and fast state adjusting cornering properties in order to solve existing electric boosting steering system.
For achieving the above object, scheme of the present utility model is: a kind of electric boosting steering system, comprise the input shaft (20) that is in transmission connection with steering handwheel, the output shaft (21) that is in transmission connection with mechanical steering gear (16), be dual planetary gear transmission device (6) between input shaft (20) and the output shaft (21), the dual planetary gear transmission device is connected with controlled, electronic worm-and-wheel gear, described dual planetary gear transmission device comprises the first planet row and the second planet row, first sun wheel (61) of the first planet row connects described input shaft (20), the first planet row and the second planet row share a pinion carrier (64), and second sun wheel (66) of the second planet row connects output shaft (21); Described worm-and-wheel gear is connected on the gabarit of the first internally toothed annulus (61) of the first planet row; Second internally toothed annulus (65) of the second planet row is fixing; Described electric boosting steering system comprises that also a high low speed turns to auxiliary mechanism, this high low speed turns to auxiliary mechanism to comprise a power-transfer clutch that is used for the rotation of the first row star-wheel (62) of locking the first planet row when low speed commutates, removes locking when commutating at a high speed, and one be used for to receive vehicle speed signal, control the electronic control unit of described power-transfer clutch, the described power-transfer clutch of this electronic control unit control linkage.
Described power-transfer clutch is magnetic clutch, consisted of by a magnet coil (4) and a lock piece (5), locking is removed in the rotation of the first row star-wheel (62) of lock piece (5) locking first planet row when the magnetic clutch adhesive when not adhesive of magnetic clutch.
Described magnetic clutch is friction-type electromagnetic clutch, and described lock piece (5) is the friction sucker.
Described magnetic clutch is plug bush type unidirectional electrical magnetic clutch, and described lock piece (5) is axle sleeve.
Described electronic control unit (13) is also sampled and is mounted on torque sensor (1) and rotary angle transmitter (2) on the input shaft, output control linkage electrical motor (9), and electrical motor (9) drives described worm-and-wheel gear (7,8).
The utility model at first provides a kind of novel dual planetary gear transmission device, adopts two sun wheels to connect respectively input shaft and output shaft, and the first internally toothed annulus can controlled rotation, and the second internally toothed annulus is fixed; Then at above-mentioned dual planetary gear transmission device a high low speed is set and turns to auxiliary mechanism, this auxiliary mechanism is according to speed of a motor vehicle height, the rotation of the first row star-wheel is limited or lift restrictions by power-transfer clutch, the utility model can be according to the driving cycle of driver command and car, the automatic switchover mode of operation, make vehicle realize low speed rotation to light and flexible, high speed turns to the cornering properties of simple and stable.And system architecture is simple, and operation is very easy.
Description of drawings
Fig. 1 is electric boosting steering system constructional drawing of the present utility model.
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of electric boosting steering system, comprise the input shaft 20 that is in transmission connection with steering handwheel, the output shaft 21 that is in transmission connection with mechanical steering gear 16, be dual planetary gear transmission device 6 between input shaft 20 and the output shaft 21, the dual planetary gear transmission device is connected with controlled, electronic worm-and-wheel gear, the dual planetary gear transmission device comprises the first planet row and the second planet row, the first sun wheel 61 of the first planet row connects input shaft 20, the second sun wheel 66 that the first planet row and the second planet row share pinion carrier 64, the second planet rows connects output shaft 21; Worm-and-wheel gear is connected on the gabarit of the first internally toothed annulus 61 of the first planet row; The second internally toothed annulus 65 of the second planet row is fixing.Electric boosting steering system comprises that also a high low speed turns to auxiliary mechanism, this high low speed turns to auxiliary mechanism to comprise a power-transfer clutch that is used for the rotation of the first row star-wheel 62 of locking the first planet row when low speed commutates, removes locking when commutating at a high speed, and one be used for to receive vehicle speed signal, the electronic control unit 13 of control clutch, electronic control unit control linkage power-transfer clutch.
In the present embodiment, power-transfer clutch adopts magnetic clutch, can be installed on the pinion carrier.Magnetic clutch is made of a magnet coil 4 and a lock piece 5, and locking is removed in the rotation of lock piece 5 locking the first row star-wheel 62 when the magnetic clutch adhesive when not adhesive of magnetic clutch.Magnetic clutch can adopt friction clutch and plug bush type free-wheel clutch, and lock piece 5 is sucker or axle sleeve, also can adopt the power-transfer clutch of other type.Electronic control unit 13 collection vehicle tach signals 12, output control linkage magnetic clutch.The electronic control unit sampling is mounted on torque sensor 1 and the rotary angle transmitter 2 on the input shaft, output control linkage electrical motor 9, and electrical motor 9 drives worm-and-wheel gear.Among Fig. 1,7 is worm screw, and 8 is coupler.
As other embodiment, the power-transfer clutch that also can adopt non-electromagnetic force to drive drives such as electric pushrod, and liquid (gas) is pressed the power-transfer clutch that drives.
Electronic control unit control electrical motor and high low speed turn to auxiliary mechanism, receive vehicle speed signal, sensor passes electronic control unit desired signal, electrical motor provides power-assisted or helps corner by worm-and-wheel gear, dual planetary gear transmission device synthetic power or motion from steering handwheel and electrical motor.
Magnetic clutch is accepted the magnetic clutch control signal 3 from electronic control unit 13, control lock piece 5 locked satellite gears 62, electrical motor 8 is accepted the control signal 11 of electronic control unit 13, produce motion, by coupler 8 and worm screw 7, pass to the dual planetary gear transmission device, realize power-assisted or help corner.The vehicle speed signal 12 that electronic control unit 13 is accepted from car speed sensor, the dtc signal 14 of torque sensor 1, the feedback signal 10 of rotary angle transmitter 2 angular signals 15 and electrical motor produces control signal 11, control motor current size; Produce control signal 3, the action of control magnetic clutch.
System work process of the present utility model is as follows:
When vehicle low speed, when turning to, electronic control unit 13 control magnetic clutch work, promote lock piece 5, locked dual planetary gear transmission device 6 the first row star-wheels 62, at this moment dual planetary gear transmission device 6 is take pinion carrier 64 as input (input comprises the rotation from the power of steering handwheel 17 and electrical motor 9), take the second sun wheel 66 as output.Electrical motor 9 produces power-assisted under the control of electronic control unit 13, synthesize input on the pinion carrier 64 with steering handwheel 17 moments at locked dual planetary gear transmission device 6 the first row star-wheels 62, the second internally toothed annulus 65 is fixing, the second sun wheel output 66, its transmitting ratio is 1/1+i, wherein i is the first internally toothed annulus 61 and the first sun wheel 63 ratios of number of teeth, so the steering swivel system transmitting ratio is reduced to the only 1/1+i of mechanical steering system transmitting ratio, the cornering properties of light and flexible when having realized low speed.The vehicle high speed, when turning to, electronic control unit 13 control magnetic clutchs are not worked it, lock piece 5 is decontroled the first row star-wheel 62, electrical motor 9 produces under the control of electronic control unit 13 and helps corner, input at the corner that the first row star-wheel 62 synthesizes pinion carrier 64 with steering handwheel 17 corners, 66 outputs are slowed down through the second sun wheel, pass to tire by mechanical steering gear 16, change the steering swivel system transmitting ratio, so that the ratio of the yaw velocity of vehicle barycenter and steering wheel angle is definite value, thereby so that the cornering properties of vehicle when travelling under the high speed of a motor vehicle in different is constant, driving variable gets more simple, easily handle.
Claims (5)
1. electric boosting steering system, comprise the input shaft (20) that is in transmission connection with steering handwheel, the output shaft (21) that is in transmission connection with mechanical steering gear (16), be dual planetary gear transmission device (6) between input shaft (20) and the output shaft (21), the dual planetary gear transmission device is connected with controlled, electronic worm-and-wheel gear, it is characterized in that, described dual planetary gear transmission device comprises the first planet row and the second planet row, first sun wheel (61) of the first planet row connects described input shaft (20), the first planet row and the second planet row share a pinion carrier (64), and second sun wheel (66) of the second planet row connects output shaft (21); Described worm-and-wheel gear is connected on the gabarit of the first internally toothed annulus (61) of the first planet row; Second internally toothed annulus (65) of the second planet row is fixing; Described electric boosting steering system comprises that also a high low speed turns to auxiliary mechanism, this high low speed turns to auxiliary mechanism to comprise a power-transfer clutch that is used for the rotation of the first row star-wheel (62) of locking the first planet row when low speed commutates, removes locking when commutating at a high speed, and one be used for to receive vehicle speed signal, control the electronic control unit of described power-transfer clutch, the described power-transfer clutch of this electronic control unit control linkage.
2. a kind of electric boosting steering system according to claim 1, it is characterized in that, described power-transfer clutch is magnetic clutch, consisted of by a magnet coil (4) and a lock piece (5), locking is removed in the rotation of the first row star-wheel (62) of lock piece (5) locking first planet row when the magnetic clutch adhesive when not adhesive of magnetic clutch.
3. a kind of electric boosting steering system according to claim 2 is characterized in that, described magnetic clutch is friction-type electromagnetic clutch, and described lock piece (5) is the friction sucker.
4. a kind of electric boosting steering system according to claim 2 is characterized in that, described magnetic clutch is plug bush type unidirectional electrical magnetic clutch, and described lock piece (5) is axle sleeve.
5. a kind of electric boosting steering system according to claim 2, it is characterized in that, described electronic control unit (13) is also sampled and is mounted on torque sensor (1) and rotary angle transmitter (2) on the input shaft, output control linkage electrical motor (9), electrical motor (9) drives described worm-and-wheel gear (7,8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454492 CN202765086U (en) | 2012-09-07 | 2012-09-07 | Electric power steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454492 CN202765086U (en) | 2012-09-07 | 2012-09-07 | Electric power steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202765086U true CN202765086U (en) | 2013-03-06 |
Family
ID=47771680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220454492 Withdrawn - After Issue CN202765086U (en) | 2012-09-07 | 2012-09-07 | Electric power steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202765086U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862599A (en) * | 2012-09-07 | 2013-01-09 | 河南科技大学 | Electric power-assisted steering system |
| CN107187494A (en) * | 2017-05-15 | 2017-09-22 | 长安大学 | A kind of bi-motor multi-model coupling electric boosting steering system |
| CN108025761A (en) * | 2015-09-07 | 2018-05-11 | 大众汽车有限公司 | Commercial car steering |
| CN108639146A (en) * | 2018-05-30 | 2018-10-12 | 南京航空航天大学 | A kind of intelligence assist steering system and its control method |
| CN117446006A (en) * | 2023-12-14 | 2024-01-26 | 山东先河汽车零部件有限公司 | Electric power steering gear of tubular automobile |
-
2012
- 2012-09-07 CN CN 201220454492 patent/CN202765086U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862599A (en) * | 2012-09-07 | 2013-01-09 | 河南科技大学 | Electric power-assisted steering system |
| CN102862599B (en) * | 2012-09-07 | 2015-04-15 | 河南科技大学 | Electric power-assisted steering system |
| CN108025761A (en) * | 2015-09-07 | 2018-05-11 | 大众汽车有限公司 | Commercial car steering |
| CN107187494A (en) * | 2017-05-15 | 2017-09-22 | 长安大学 | A kind of bi-motor multi-model coupling electric boosting steering system |
| CN108639146A (en) * | 2018-05-30 | 2018-10-12 | 南京航空航天大学 | A kind of intelligence assist steering system and its control method |
| CN108639146B (en) * | 2018-05-30 | 2023-06-09 | 南京航空航天大学 | Intelligent auxiliary steering system and control method thereof |
| CN117446006A (en) * | 2023-12-14 | 2024-01-26 | 山东先河汽车零部件有限公司 | Electric power steering gear of tubular automobile |
| CN117446006B (en) * | 2023-12-14 | 2024-05-03 | 山东先河汽车零部件有限公司 | Electric power steering gear of tubular automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130306 Effective date of abandoning: 20150415 |
|
| RGAV | Abandon patent right to avoid regrant |