CN105667579A - Differential steering system for hub motor driving electric automobile and electric automobile - Google Patents
Differential steering system for hub motor driving electric automobile and electric automobile Download PDFInfo
- Publication number
- CN105667579A CN105667579A CN201610120717.9A CN201610120717A CN105667579A CN 105667579 A CN105667579 A CN 105667579A CN 201610120717 A CN201610120717 A CN 201610120717A CN 105667579 A CN105667579 A CN 105667579A
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- China
- Prior art keywords
- wheel
- steering
- electric automobile
- wheel hub
- hub motor
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- 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
- 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
- B62D5/0421—Electric motor acting on or near steering gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
- B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
- B62D11/04—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of separate power sources
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention discloses a differential steering system for a hub motor driving electric automobile. A frame of the system is respectively connected with steering knuckles on hub motors in four wheels through lower swinging arms; rotors of the hub motors are fixedly connected with hubs of the wheels; drum brakes are mounted in the hub motors; independent suspensions are respectively arranged in front of and behind the frame; two ends of both upper swinging arms and the lower swinging arms are connected with the steering knuckles of the wheels on the two sides of the frame; a steering rack is arranged in front of the frame; the two ends of the steering rack are connected with the steering knuckles of the wheels on the two sides in front of the frame through steering tie rods; and one side of the steering rack is provided with a return spring of a returnable mechanism. The invention further discloses an electric automobile. According to the invention, the rotation speeds of the wheels can be adjusted to realize that each wheel is kept in a pure rolling state with the ground during running; therefore, friction forces between the wheels and the ground are reduced and the service life of each part of the automobile is prolonged.
Description
Technical field
The invention belongs to electric vehicle engineering field, be specifically related to differential steering system and the electric automobile thereof of a kind of In-wheel motor driving electric automobile.
Background technology
The power of current orthodox car needs to drive wheel through a sets of transmission mechanism, and this sets of transmission mechanism structure is complicated, is easily generated the problems such as vibration, noise, transmission power loss.
Four-wheel In-wheel motor driving electric automobile is driven four wheels respectively by four wheel hub motors, and it eliminates the drive system of orthodox car, and the structure making electric automobile is more succinct, the useful space increases; The structure of conventional steering substantially has: mechanical type, fluid pressure type, electrodynamic type etc. Differential steering major part is the deflection adopting four steer motor to control four wheels. But there is problems of working as steering once break down, it is impossible to when making wheel deflect, the direction of vehicle just loses controllability; The increase of motor number also makes the complexity of control increase, thus reducing the reliability and stability of steering. But owing to four vehicle wheel rotational speeds of In-wheel motor driving are identical, therefore when electric automobile needs to turn to, the rotating speed that there is piece wheel is too fast or excessively slow, this can cause motor turning difficulty, occur that relative translation gliding done by some wheel with ground, thus increasing the frictional force of wheel and ground, accelerating the abrasion of wheel, even other parts of automobile being caused damage.
Summary of the invention
In view of this, present invention is primarily targeted at the differential steering system that a kind of In-wheel motor driving electric automobile is provided and electric automobile thereof.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The embodiment of the present invention provides the differential steering system of a kind of In-wheel motor driving electric automobile, this system includes vehicle frame, wheel, steering mechanism, centering mechanism, wheel hub motor, independent suspension, amortisseur, described independent suspension includes top link, lower swing arm, described centering mechanism includes return spring, steering rack, described steering mechanism includes track rod, knuckle, described vehicle frame is connected with the knuckle on four wheel inner wheel hub motors respectively by lower swing arm, the rotor of described wheel hub motor is fixing with the wheel hub of wheel to be connected, the internally installed of described wheel hub motor has drum brake,The front and back of described vehicle frame are respectively arranged with independent suspension, described top link and lower swing arm two ends and are connected with the knuckle of the wheel of described vehicle frame both sides; Described vehicle frame front arranges steering rack, and the two ends of described steering rack are connected with the knuckle of the wheel of both sides, described vehicle frame front by track rod; The side of described steering rack arranges the return spring of centering mechanism.
In such scheme, described steering mechanism also includes the steer motor with decelerator, the output shaft of described steer motor is provided with and turns to little gear, described in turn to little wheel and rack to be meshed, the outer end of described tooth bar is connected with the knuckle in outside by ball stud.
In such scheme, described centering mechanism is the linkage with return spring, described return spring is arranged to provide vehicle angular signal for Electric Motor Wheel differential control and control the displacement transducer of Vehicular turn differential.
In such scheme, described steering mechanism is arranged at the front portion of electric automobile and aligns with the driving axle of described wheel.
The embodiment of the present invention also provides for a kind of electric automobile, including car body and differential steering system described above.
Compared with prior art, beneficial effects of the present invention:
(1) keeping pure rolling state between each wheel and ground when the present invention can adjust vehicle wheel rotational speed with satisfied traveling, thus reducing the frictional force of wheel and ground, extending the service life of each parts of automobile.
(2) present invention is based on the differential steering system of wheel hub motor electric automobile, wheel hub motor is adopted to carry out four-wheel drive, the rotating speed of its four wheels and torque are capable of independent control, in steering procedure, steering mechanism makes differential steering campaign meet steering trapezium geometrical relationship, and that improves vehicle turns to reliability.
(3) present invention can independently control to turn to, and makes electric automobile be capable of the multi-mode steering of differential steering, electric powered steering, is greatly improved the operating flexibility of vehicle.
Accompanying drawing explanation
Fig. 1 is the isometric view of embodiment of the present invention structural representation;
Fig. 2 is the front view of embodiment of the present invention structural representation;
Fig. 3 is the side view of embodiment of the present invention structural representation.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The embodiment of the present invention provides the differential steering system of a kind of In-wheel motor driving electric automobile, as shown in Figures 1 to 3, this system includes vehicle frame 1, wheel 2, steering mechanism, centering mechanism, wheel hub motor 3, independent suspension, amortisseur 11, described independent suspension includes top link 10, lower swing arm 12, it is characterized in that, described centering mechanism includes return spring 4, steering rack 7, described steering mechanism includes track rod 8, knuckle 9, described in this system, vehicle frame 1 is connected with the knuckle 9 on four wheel 2 inner wheel hub motors 3 respectively by lower swing arm 12, the rotor of described wheel hub motor 3 is fixing with the wheel hub of wheel 2 to be connected, described the internally installed of wheel hub motor 3 has drum brake, the front and back of described vehicle frame 1 are respectively arranged with independent suspension, described top link 10 and lower swing arm 12 two ends and are connected with the knuckle 9 of the wheel 2 of described vehicle frame 1 both sides, described vehicle frame 1 front arranges steering rack 7, and the two ends of described steering rack 7 are connected with the knuckle 9 of the wheel 2 of both sides, described vehicle frame 1 front by track rod 8, the side of described steering rack 7 arranges the return spring 4 of centering mechanism.
Described steering mechanism also includes the steer motor 6 with decelerator, the output shaft of described steer motor 6 is provided with and turns to little gear, described in turn to little wheel and rack to be meshed, the outer end of described tooth bar is connected with the knuckle 9 in outside by ball stud.
Described centering mechanism is the linkage with return spring 4, described return spring 4 is arranged to provide vehicle angular signal for Electric Motor Wheel differential control and control the displacement transducer 5 of Vehicular turn differential.
Described steering mechanism is arranged at the front portion of electric automobile and aligns with the driving axle of described wheel 2.
The work process of the present invention:
The driving power of this In-wheel motor driving electric automobile is produced by wheel hub motor 3, and this wheel hub motor is connected to vehicle frame 1 by knuckle 9, top link 10, lower swing arm 12 and amortisseur 11.
If electric automobile forward rectilinear travels, then applying power to two wheels 2 being positioned at vehicle right side and left side, four wheel hub motors 3 are all accurately with identical rotation speed operation.
If electric automobile is diverted to side, then left and right sides wheel hub motor 3 is with different rotation speed operation, produces rotating speed official post vehicle and completes go to action, and the speed of right wheel hub motor 3 and left wheel hub motor 3 is different according to the expectation knuckle radius of vehicle traveling.
Electric automobile can also complete go to action by steer motor 6, and steer motor receives steering order and will make action and make steering rack 7 move to turn side, drives track rod 8 push/pull knuckle 9 to make wheel 2 deflect, thus realizing turning to. And the differential of left and right wheel hub motor is adjusted according to the numerical value of displacement transducer 6.
After electric automobile completes to turn to, return spring 4 relies on self damping to make steering rack 7 move to center, thus driving track rod 8, knuckle 9 to make wheel 2 times just.
The embodiment of the present invention also provides for a kind of electric automobile, including car body and described differential steering system.
The above, be only presently preferred embodiments of the present invention, is not intended to limit protection scope of the present invention.
Claims (5)
1. the differential steering system of an In-wheel motor driving electric automobile, this system includes vehicle frame (1), wheel (2), steering mechanism, centering mechanism, wheel hub motor (3), independent suspension, amortisseur (11), described independent suspension includes top link (10), lower swing arm (12), it is characterized in that, described centering mechanism includes return spring (4), steering rack (7), described steering mechanism includes track rod (8), knuckle (9), described vehicle frame (1) is connected with the knuckle (9) on four wheels (2) inner wheel hub motor (3) respectively by lower swing arm (12), the rotor of described wheel hub motor (3) is fixing with the wheel hub of wheel (2) to be connected, the internally installed of described wheel hub motor (3) has drum brake, the front and back of described vehicle frame (1) are respectively arranged with independent suspension, described top link (10) and lower swing arm (12) two ends and are connected with the knuckle (9) of the wheel (2) of described vehicle frame (1) both sides, described vehicle frame (1) front arranges steering rack (7), and the two ends of described steering rack (7) are connected with the knuckle (9) of the wheel (2) of described vehicle frame (1) both sides, front by track rod (8), the side of described steering rack (7) arranges the return spring (4) of centering mechanism.
2. the differential steering system of wheel hub motor electric automobile according to claim 1, it is characterized in that: described steering mechanism also includes the steer motor (6) with decelerator, the output shaft of described steer motor (6) is provided with and turns to little gear, described turning to little wheel and rack to be meshed, the outer end of described tooth bar is connected with the knuckle (9) in outside by ball stud.
3. the differential steering system of wheel hub motor electric automobile according to claim 1 and 2, it is characterized in that: described centering mechanism is the linkage with return spring (4), described return spring (4) is arranged to provide vehicle angular signal for Electric Motor Wheel differential control and control the displacement transducer (5) of Vehicular turn differential.
4. the differential steering system of wheel hub motor electric automobile according to claim 3, it is characterised in that: described steering mechanism is arranged at the front portion of electric automobile and aligns with the driving axle of described wheel (2).
5. an electric automobile, it is characterised in that: include car body and the differential steering system as described in claim 1-4 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610120717.9A CN105667579A (en) | 2016-03-03 | 2016-03-03 | Differential steering system for hub motor driving electric automobile and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610120717.9A CN105667579A (en) | 2016-03-03 | 2016-03-03 | Differential steering system for hub motor driving electric automobile and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105667579A true CN105667579A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610120717.9A Pending CN105667579A (en) | 2016-03-03 | 2016-03-03 | Differential steering system for hub motor driving electric automobile and electric automobile |
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| CN (1) | CN105667579A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970866A (en) * | 2016-07-06 | 2016-09-28 | 詹晨 | Urban complex road self-walking platform |
| CN107627904A (en) * | 2017-09-21 | 2018-01-26 | 山东芯力量汽车科技有限公司 | A kind of differential adjusting means |
| CN108438045A (en) * | 2018-03-08 | 2018-08-24 | 南京威尔瑞智能科技有限公司 | A kind of non-tie rod linkage transfer of Flying by wire |
| CN110053466A (en) * | 2019-04-26 | 2019-07-26 | 杭州申昊科技股份有限公司 | One kind two drives spider gear structure of driving unit |
| CN110181999A (en) * | 2019-05-30 | 2019-08-30 | 北京汽车股份有限公司 | Steeraxle and vehicle |
| CN112026913A (en) * | 2020-09-18 | 2020-12-04 | 齐鲁工业大学 | Semi-trailer with rear wheels capable of realizing electronic differential and reversing method |
| CN112238716A (en) * | 2020-10-16 | 2021-01-19 | 湖北文理学院 | Steerable rail device and road-rail dual-purpose vehicle |
| US20210016764A1 (en) * | 2018-03-12 | 2021-01-21 | Athéna Technolo-G Inc. | Steering assembly for a vehicle, vehicle comprising the same and method for controlling motion of a vehicle using a steering assembly |
| CN113844217A (en) * | 2021-07-14 | 2021-12-28 | 江苏添仂智能科技有限公司 | Dual-purpose transport means of rail way based on autopilot |
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| US5415427A (en) * | 1991-03-14 | 1995-05-16 | Dr. Ing. H.C.F. Porsche Ag | Wheel suspension system |
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| CN203094172U (en) * | 2012-12-24 | 2013-07-31 | 中国科学院深圳先进技术研究院 | Steer-by-wire device capable of independent steering and driving electric automobile and suspension system thereof |
| CN105015618A (en) * | 2015-08-17 | 2015-11-04 | 长春孔辉汽车科技股份有限公司 | Active return-to-middle control system of electric wheel suspension |
| CN205469256U (en) * | 2016-03-03 | 2016-08-17 | 西安工业大学 | In -wheel motor driving electric automobile's differential steering system and electric automobile thereof |
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2016
- 2016-03-03 CN CN201610120717.9A patent/CN105667579A/en active Pending
Patent Citations (6)
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| US5415427A (en) * | 1991-03-14 | 1995-05-16 | Dr. Ing. H.C.F. Porsche Ag | Wheel suspension system |
| CN1579859A (en) * | 2004-05-15 | 2005-02-16 | 刘二锋 | Automobile steering control system combination mode and apparatus thereof |
| CN101638052A (en) * | 2009-08-21 | 2010-02-03 | 山东大学 | Wheel assembly with integration of independent driving, steering, suspending and braking |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970866A (en) * | 2016-07-06 | 2016-09-28 | 詹晨 | Urban complex road self-walking platform |
| CN105970866B (en) * | 2016-07-06 | 2017-09-29 | 温州东联市政工程有限公司 | A kind of complicated road automatically walk platform in city |
| CN107627904A (en) * | 2017-09-21 | 2018-01-26 | 山东芯力量汽车科技有限公司 | A kind of differential adjusting means |
| CN107627904B (en) * | 2017-09-21 | 2021-01-26 | 山东芯力量汽车科技有限公司 | Differential adjusting device |
| CN108438045A (en) * | 2018-03-08 | 2018-08-24 | 南京威尔瑞智能科技有限公司 | A kind of non-tie rod linkage transfer of Flying by wire |
| US20210016764A1 (en) * | 2018-03-12 | 2021-01-21 | Athéna Technolo-G Inc. | Steering assembly for a vehicle, vehicle comprising the same and method for controlling motion of a vehicle using a steering assembly |
| CN110053466A (en) * | 2019-04-26 | 2019-07-26 | 杭州申昊科技股份有限公司 | One kind two drives spider gear structure of driving unit |
| CN110181999A (en) * | 2019-05-30 | 2019-08-30 | 北京汽车股份有限公司 | Steeraxle and vehicle |
| CN112026913A (en) * | 2020-09-18 | 2020-12-04 | 齐鲁工业大学 | Semi-trailer with rear wheels capable of realizing electronic differential and reversing method |
| CN112238716A (en) * | 2020-10-16 | 2021-01-19 | 湖北文理学院 | Steerable rail device and road-rail dual-purpose vehicle |
| CN113844217A (en) * | 2021-07-14 | 2021-12-28 | 江苏添仂智能科技有限公司 | Dual-purpose transport means of rail way based on autopilot |
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| PB01 | Publication | ||
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Application publication date: 20160615 |