CN203094172U - Steer-by-wire device capable of independent steering and driving electric automobile and suspension system thereof - Google Patents
Steer-by-wire device capable of independent steering and driving electric automobile and suspension system thereof Download PDFInfo
- Publication number
- CN203094172U CN203094172U CN2012207188592U CN201220718859U CN203094172U CN 203094172 U CN203094172 U CN 203094172U CN 2012207188592 U CN2012207188592 U CN 2012207188592U CN 201220718859 U CN201220718859 U CN 201220718859U CN 203094172 U CN203094172 U CN 203094172U
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- steering
- suspension system
- wire device
- steer
- retarder
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- 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
- B62D5/0418—Electric motor acting on road wheel carriers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
- B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
- B62D7/15—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
- B62D7/1509—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels with different steering modes, e.g. crab-steering, or steering specially adapted for reversing of the vehicle
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Vehicle Body Suspensions (AREA)
- Power Steering Mechanism (AREA)
Abstract
The utility model provides a steer-by-wire device capable of independent steering and driving an electric automobile and a suspension system thereof. The steer-by-wire device comprises a steering motor, a cardan joint and a speed reducer which are connected in sequence, wherein the speed reducer is a worm gear reducer with a mechanical self-locking function, a steering main pin is arranged at one end of an output shaft of the speed reducer, and an absolute type encoder is mounted at the other end of the output shaft of the speed reducer. The utility model further provides a suspension system matched with the steer-by-wire device. The steer-by-wire device is simple and compact in structure, position keeping in the driving process of the automobile can be achieved through a mechanical locking method, and complexity of a steering system is lowered. The suspension system matched with the steer-by-wire device can be used for independently controlling steering of wheels to achieve steering of front wheels and rear wheels, pivot steering and horizontal movement in any direction, and the suspension system is suitable for being used in narrow spaces where flexible steering is needed.
Description
Technical field
The utility model relates to the electronlmobil field, relates in particular to the steering hardware and the suspension system thereof of electronlmobil.
Background technology
Along with the continuous development of new-energy automobile industry, the four-wheel independent steering is subjected to increasing attention with the driving electronlmobil.Such electronlmobil adopts 4 wheel hub motor individual drive, utilize electronic differential, adopt 4 motors independently to control turning to of four wheels simultaneously, the driving system of no orthodox car and tie rod linkage, the driving efficiency height can be realized comparatively ideal control and the Vehicle Stability Control of turning to, in addition, 4 wheels can both carry out wide-angle and turn to, and can realize the pivot stud and the cross running of vehicle, have greatly improved the alerting ability that automobile moves.Such concept car has appearred in Japan at present, and is domestic to the also existing research of such electronlmobil.
Announced a kind of individual drive as Chinese patent literature CN200910017734, turn to, the wheel assembly with integration that hangs and brake, wherein, steering hardware is by steer motor, universal slip joint, drive bevel gear, driven wheel of differential and absolute type encoder are formed, be connected by universal slip joint between steer motor and the drive bevel gear, the rear portion of steer motor is connected with magnet stopper, driven wheel of differential and drive bevel gear engagement, driven wheel of differential is fixedly mounted on overcoat one end of constant-velocity universal joint in the draft hitch, and absolute type encoder is installed in the outer of constant-velocity universal joint and puts; Draft hitch is made up of Top Crossbeam, constant-velocity universal joint, steering swivel, bulb, following swing arm and bumper, the steering swivel upper end is rigidly connected with the interior cover of constant-velocity universal joint, the constant-velocity universal joint overcoat links to each other with top link by bearing, its lower end is connected with following swing arm by bulb, and bumper one end is connected with following swing arm.This device has been realized individual drive and has been turned to, but the position of wheel keeps realizing by magnet stopper in the vehicle ' process, this design makes the parts of steering swivel system more, and it is very complicated that whole steering swivel system becomes, and has also increased the cost of care and maintenance simultaneously.
The utility model content
The utility model provides a kind of system architecture simple at the problem that prior art exists, and is convenient to the steering hardware and the suspension system of the electronlmobil with individual drive, independent steering function of maintaining.
For achieving the above object, the present invention is by the following technical solutions:
A kind of independent steering and the steering-by-wire device that drives electronlmobil, comprise bonded assembly steer motor, universal-joint and retarder successively, described steer motor is fixedly mounted on the car body, described steer motor is connected with described retarder by described universal-joint, described retarder is the worm type of reduction gearing with mechanical self-latching function, output shaft one end of described retarder is provided with steering yoke bolt, and the other end is equipped with absolute type encoder.
Described universal-joint is the telescoping universal-joint.
A kind of suspension system that cooperates above-mentioned steering-by-wire device, comprise draft hitch, the steering-by-wire device, hub drive device and brake equipment, Top Crossbeam and lower cross arm that described draft hitch comprises vehicle frame and laterally is connected its top and bottom respectively, the lower end of steering swivel is passed through down, and bulb is connected with lower cross arm, between lower cross arm and vehicle frame, be provided with bumper, it is characterized in that: the described steering yoke bolt of the mouth of described retarder is connected with the ball cage that is fixed in described steering swivel upper end by spline, described steering yoke bolt is fixed on the bearing base of Top Crossbeam end by a pair of tapered roller bearing, and by roller bearing end cap tapered roller bearing is carried out axial restraint.
Described hub drive device comprises wheel and wheel hub motor, and the outer rotor of wheel hub motor and the wheel rim of wheel are fixed together, and the stator axis of wheel hub motor and the steering swivel in the draft hitch are rigidly connected.
Described brake equipment comprises brake caliper and brake disc, and brake caliper is fixed on the steering swivel, and brake disc is fixing with the outer rotor of wheel hub motor.
Described brake caliper adopts hydraulic-driven.
Described Top Crossbeam has two cross bars, and described cross bar and vehicle frame constitute triangular structure on horizontal surface, and described retarder is installed in the junction of described two cross bars.
Described bumper is a spring damper, and an end of described spring damper is connected on the vehicle frame, and the other end is connected the end of lower cross arm.
The beneficial effects of the utility model are:
1, independent steering described in the utility model and the steering-by-wire device that drives electronlmobil, comprise steer motor, universal-joint and retarder, described retarder is the turbine bar retarder with mechanical self-latching function, output shaft one end at retarder is provided with steering yoke bolt, and the other end is equipped with absolute type encoder.Adopt worm type of reduction gearing in this technical scheme with auto-lock function, this worm type of reduction gearing can either play the effect of acceleration, can make automobile keep certain direction in the process of moving again, effectively avoided the available technology adopting magnet stopper to cause the steering swivel system parts more, the technical matters of system complex, the structure of steering swivel system has been simplified in this design again when guaranteeing to turn to function, make described steering-by-wire apparatus structure simply compact, make whole steering swivel system become simple and practical, and adopt the mechanical caging mode to realize the position in the vehicle ' process is kept, reduce the complexity of steering swivel system, and help maintenance.
2, the utility model provides a kind of suspension system, comprise draft hitch, the steering-by-wire device, hub unit and brake equipment, described steering-by-wire device is independent steering described in the utility model and the steering-by-wire device that drives electronlmobil, the described steering yoke bolt of described steering-by-wire device is connected with the ball cage that is fixed in described steering swivel upper end by spline, described steering yoke bolt is fixed on the bearing base of Top Crossbeam end by a pair of tapered roller bearing, and tapered roller bearing is carried out axial restraint by roller bearing end cap, by said structure described steering-by-wire device is connected with described draft hitch, constitute suspension system, it is firm to make whole suspension system connect, simple in structure, control is convenient.Adopt the independent suspension system of steering-by-wire device described in the utility model, can independently control wheel steering, realize the motion of translation of front-and rear-wheel steer, pivot stud and any direction, be applicable to the place that the space is narrow and small and need turn to flexibly.
3, suspension system described in the utility model, two cross bars of upper cantilever and vehicle frame constitute triangular structure, and retarder is installed in the junction of two cross bars, promptly leg-of-mutton drift angle place, steer motor is fixed on the vehicle frame, and the whole steering swivel system that so just is is more firm.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the front view of steering swivel;
Fig. 3 is the birds-eye view of steering swivel;
Fig. 4 is the front view of Top Crossbeam;
Fig. 5 is the birds-eye view of Top Crossbeam;
Fig. 6 is a wheel steering scheme drawing of the present utility model;
Among the figure: 11-wheel hub motor, 12-wheel, 21-steer motor, 22-universal slip joint, the 23-retarder, 24-coder, 25-steering yoke bolt, the 30-roller bearing end cap, 31-vehicle frame, 32-Top Crossbeam, the 33-bumper, 34-ball cage, 35-lower cross arm, the 36-steering swivel, bulb under the 37-, 38-bolt, the 39-tapered roller bearing, 41-brake disc, 42-brake caliper.
The specific embodiment
Embodiment 1:
Referring to Fig. 1, the utility model provides a kind of steering-by-wire device, comprises bonded assembly steer motor 21, universal-joint 22 and retarder 23 successively, and described steer motor 21 is fixedly mounted on the car body.Described steer motor 21 is connected with described retarder 23 by universal-joint 22, the worm type of reduction gearing of described retarder 23 for having the mechanical self-latching function, output shaft one end of described retarder 23 is provided with steering yoke bolt 25, this steering yoke bolt is arranged at the ball cage 34 interior (referring to Fig. 2 Fig. 3) of steering swivel 36 upper ends by spline, the other end of retarder 23 is equipped with absolute type encoder 24, described absolute type encoder 24 is used for the deflection angle of wheel is fed back to operator's compartment, realizes artificial or computer controlled.Described worm type of reduction gearing can play the effect of deceleration on the one hand, can make wheel keep certain direction in the process of moving on the other hand again, so just can save the magnet stopper in the existing steering swivel system, has simplified the structure of steering swivel system.Therefore, steering-by-wire apparatus structure described in the utility model is simply compact, and adopts the mechanical caging mode to realize the position in the vehicle ' process is kept, and reduces the complexity of steering swivel system.
The universal-joint 22 that present embodiment adopts is the telescoping universal-joint, jolts owing to automobile can produce in the process of travelling unavoidably, and adopts the telescoping universal-joint just can make automobile still keep original deflection angle under the situation of jolting.
Embodiment 2:
The utility model also provides a kind of suspension system of using the foregoing description 1 to constitute, comprises draft hitch, steering-by-wire device, hub drive device and brake equipment.
Described steering-by-wire device comprises bonded assembly steer motor 21, universal-joint 22 and retarder 23 successively, and described steer motor 21 is fixedly mounted on the car body.Described steer motor 21 is connected with described retarder 23 by universal-joint 22, the worm type of reduction gearing of described retarder 23 for having the mechanical self-latching function, one end of described retarder 23 is equipped with absolute type encoder 24, the output shaft other end of described retarder 23 is provided with steering yoke bolt 25, described steering yoke bolt 25 is connected with the ball cage 34 that is fixed in described steering swivel 36 upper ends by spline, described steering yoke bolt 25 is fixed on the bearing base of Top Crossbeam 32 ends by a pair of tapered roller bearing 39, and carries out axial restraint by roller bearing end cap 30.
Described hub drive device comprises wheel 12 and wheel hub motor 11, and the outer rotor of wheel hub motor 11 is fixing with the wheel rim of wheel 12, and the stator axis and the steering swivel in the draft hitch 36 of wheel hub motor 11 are rigidly connected.This set makes all an independent driving motor on each wheel, described motor is fixed on the steering swivel, has increased the alerting ability that drives.
Described brake equipment comprises brake caliper 42 and brake disc 41, and brake caliper 42 is fixed on the steering swivel 36, and brake disc is fixing with the outer rotor of wheel hub motor 11.Brake caliper 42 adopts hydraulic-driven, also can use air pressure to drive.
Described suspension system in the present embodiment that use embodiment 1 described steering-by-wire device constitutes, can independently control wheel steering, realize the motion of translation of front-and rear-wheel steer, pivot stud and any direction, as shown in Figure 6, be particularly useful for the place that the space is narrow and small and need turn to flexibly.
Embodiment 3:
On the basis of embodiment 2, described Top Crossbeam 32 can also further be set to have the structure of two cross bars, and referring to Fig. 5, described cross bar and vehicle frame constitute triangular structure on horizontal surface, and described retarder 23 is installed in the drift angle place of described triangular structure.This set makes full use of leg-of-mutton stability, makes the effect of making of Top Crossbeam more firm, has guaranteed the safety of whole suspension system.
In the present embodiment, described bumper 33 is a spring damper, and an end of described spring damper is connected on the vehicle frame 31, and the other end is connected the end of lower cross arm 35.Spring damper is the most common and the wider a kind of bumper of range of use, but the utility model is not limited in this a kind of bumper, as using air bag bumper etc., here just play the effect of a damping, make automobile that a comparatively comfortable environment be arranged, bumper is not had specific requirement.
In addition, the ball cage 34 in the present embodiment and the axis in-line of following bulb 37, when steer motor receives turn sign, drive the worm and gear rotation in the retarder, thereby making universal-joint is the axle center with the central axis of ball cage and following bulb, the drive wheel pivots, thereby makes wheel steering.Because the pivot center of deflector has certain distance apart from the medial surface of wheel, this distance can make wheel rotate required angle around described axle center.
The above only is a most preferred embodiment of the present utility model, and in order to restriction the utility model, all within spirit of the present utility model and principle, any modification of being done, improvement etc. all should not be included within the protection domain of the present utility model.
Claims (8)
1. independent steering and the steering-by-wire device that drives electronlmobil, comprise bonded assembly steer motor (21), universal-joint (22) and retarder (23) successively, described steer motor (21) is fixedly mounted on the car body, described steer motor (21) is connected with described retarder (23) by described universal-joint (22), it is characterized in that: the worm type of reduction gearing of described retarder (23) for having the mechanical self-latching function, output shaft one end of described retarder is provided with steering yoke bolt (25), and the other end is equipped with absolute type encoder (24).
2. independent steering according to claim 1 and the steering-by-wire device that drives electronlmobil, it is characterized in that: described universal-joint (22) is the telescoping universal-joint.
3. suspension system of using the described steering-by-wire device of claim 1, comprise draft hitch, the steering-by-wire device, hub drive device and brake equipment, Top Crossbeam (32) and lower cross arm (35) that described draft hitch comprises vehicle frame (31) and laterally is connected its top and bottom respectively, the lower end of steering swivel (36) is passed through down, and bulb (37) is connected with lower cross arm (35), between lower cross arm (35) and vehicle frame, be provided with bumper (33), it is characterized in that: the described steering yoke bolt (25) of the mouth of described retarder (23) is connected with the ball cage (34) that is fixed in described steering swivel (36) upper end by spline, described steering yoke bolt (25) is fixed on the terminal bearing base of Top Crossbeam (32) by a pair of tapered roller bearing (39), and by roller bearing end cap (30) tapered roller bearing (39) is carried out axial restraint.
4. according to the described suspension system of claim 3, it is characterized in that: hub drive device comprises wheel (12) and wheel hub motor (11), the wheel rim of the outer rotor of wheel hub motor (11) and wheel (12) is fixed together, and the stator axis of wheel hub motor (11) and the steering swivel in the draft hitch (36) are rigidly connected.
5. according to the described suspension system of claim 4, it is characterized in that: described brake equipment comprises brake caliper (42) and brake disc (41), brake caliper (42) is fixed on the steering swivel (36), and brake disc (41) is fixing with the outer rotor of wheel hub motor (11).
6. according to the described suspension system of claim 5, it is characterized in that: described brake caliper (42) adopts hydraulic-driven.
7. according to claim 3 or 4 or 5 described suspension systems, it is characterized in that: described Top Crossbeam (32) has two cross bars, described cross bar and vehicle frame (31) constitute triangular structure on horizontal surface, described retarder (23) is installed in the junction of described two cross bars.
8. according to the described suspension system of claim 3, it is characterized in that: described bumper (33) is a spring damper, and an end of described spring damper is connected on the vehicle frame (31), and the other end is connected the end of lower cross arm (35).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207188592U CN203094172U (en) | 2012-12-24 | 2012-12-24 | Steer-by-wire device capable of independent steering and driving electric automobile and suspension system thereof |
| PCT/CN2013/090366 WO2014101756A1 (en) | 2012-12-24 | 2013-12-24 | Steer-by-wire apparatus independently steering and driving electric automobile, and suspension system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207188592U CN203094172U (en) | 2012-12-24 | 2012-12-24 | Steer-by-wire device capable of independent steering and driving electric automobile and suspension system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN203094172U true CN203094172U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207188592U Expired - Lifetime CN203094172U (en) | 2012-12-24 | 2012-12-24 | Steer-by-wire device capable of independent steering and driving electric automobile and suspension system thereof |
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| CN (1) | CN203094172U (en) |
| WO (1) | WO2014101756A1 (en) |
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2013
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