CN209870368U - Wheel slipping escaping device for rear-drive automobile - Google Patents

Abstract

The utility model discloses a rear-drive automobile wheel slipping escaping device, which comprises an unilateral pulling force driving device and a control device, wherein the unilateral pulling force driving device comprises a base, two longitudinal guide grooves are symmetrically arranged in the base, the longitudinal guide grooves are respectively movably connected with an L-shaped slider, the front part of the L-shaped slider is provided with a pulling rod in a penetrating way, and the pulling rod is sleeved with a spring; one end of the spring is abutted against the upper end of the front part of the L-shaped sliding block, and the other end of the spring is fixedly connected with the upper end of the tension rod through an upper spring seat; the lower part of the tension rod is sleeved with the hand brake tension balance lever; a rack is arranged on the rear side of the L-shaped sliding block, the rack is meshed with a gear set, and the gear set is in transmission connection with a driving motor; the panel is arranged on the outer side of the base, the driving motor is arranged on the panel, and the driving motor is electrically connected with the control device. The utility model discloses can solve among the prior art problem that car antiskid structure is complicated, the cost is higher, the structure is reliable, the controllability is strong, application scope is wide.

Description

Wheel slipping escaping device for rear-drive automobile

Technical Field

The utility model relates to a car auxiliary assembly, concretely relates to rear-guard auto wheel device of getting rid of poverty that skids.

Background

In the running process of an automobile, the rotating speeds of coaxial wheels are possibly different due to the reasons of steering, tire pressure change, inconsistent tire wear, uneven road surface and the like, and a differential is arranged on a driving shaft in order to ensure that the wheels and the road surface perform pure rolling operation. A common vehicle is generally provided with a symmetrical bevel gear differential, the differential has the characteristic of torque average distribution, when the vehicle runs on muddy, ice and snow, non-paved and other road surfaces, one-side wheels may slip, the wheel torque becomes smaller during slipping, due to the torque average distribution of the differential, the torque obtained by a non-slipping driving wheel is equal to the torque of the slipping driving wheel, the resultant force of the two is not enough to overcome the running resistance, and the vehicle cannot smoothly move forward.

In the prior art, in order to solve the above problems, the basic approach is to transmit most or even all of the torque to the driving wheel with good adhesion force to generate enough driving force, so that the automobile can be started or run smoothly. The following solutions are currently available: one is to install a differential lock, and the other is to adopt a limited slip differential or to control a service brake by using a chassis electric control system.

The above schemes are relatively complex in structure and high in cost, and are generally applied to cars with high configuration, and for low-configuration vehicles without the equipment, once the low-configuration vehicles slip due to the driving wheels, the low-configuration vehicles are pulled by a traction vehicle or pushed by manpower, so that the influence on normal driving is very large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the above-mentioned among the prior art not enough, provide one kind and can solve among the prior art rear-guard auto wheel of the complicated, the higher problem of cost of car antiskid structure and skid the device of getting rid of poverty.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the single-side tension driving device comprises a base, two longitudinal guide grooves are symmetrically formed in the base, the longitudinal guide grooves are respectively and movably connected with an L-shaped sliding block, a tension rod penetrates through the front portion of the L-shaped sliding block, and a spring is sleeved on the tension rod; one end of the spring is abutted against the upper end of the front part of the L-shaped sliding block, and the other end of the spring is fixedly connected with the upper end of the tension rod through an upper spring seat; the lower part of the tension rod is sleeved with the hand brake tension balance lever; a rack is arranged on the rear side of the L-shaped sliding block, the rack is meshed with a gear set, and the gear set is in transmission connection with a driving motor; the panel is arranged on the outer side of the base, the driving motor is arranged on the panel, and the driving motor is electrically connected with the control device.

Among the above-mentioned technical scheme, preferably, the tension bar upper end is provided with screw thread portion, installs stop nut on the screw thread portion, and stop nut and upper portion spring holder butt.

Among the above-mentioned technical scheme, preferred, the lower extreme and the lower spring holder fixed connection of spring, lower spring holder and the anterior upper end butt of L shape slider.

Among the above-mentioned technical scheme, preferred, the gear train includes with rack toothing's driven gear, driven gear and drive gear meshing connection, drive gear and driving motor's drive shaft fixed connection.

Among the above-mentioned technical scheme, preferred, tension bar and the balanced lever connecting portion cover of manual brake pulling force are equipped with limit stop.

In the above technical solution, preferably, the control device includes a control unit electrically connected to the driving motor, and the control unit is electrically connected to the switch unit and the driven gear position sensor, respectively.

In the above technical solution, preferably, the spring is a coil spring.

In the above technical solution, preferably, the driving motor is a 12V dc motor.

In the above technical solution, preferably, the driven gear position sensor is an electromagnetic induction type sensor.

In the above technical solution, preferably, the driven gear position sensor is disposed in the base at a position adjacent to the driven gear.

The utility model provides an above-mentioned rear-guard auto wheel skids device of getting rid of poverty's main beneficial effect lies in:

the utility model discloses a set up unilateral pulling force drive arrangement and controlling means, when the wheel is unilateral skidded, drive driving motor through controlling means and rotate, drive L shape slider along the motion of vertical guide way through the gear train, change the compression state of spring to drive the motion of tension bar. When the tail end of the tension rod is connected with the parking brake, the parking brake on the side is driven to move through the tension rod, so that the parking brake in the driving wheel on the side works, and the driving wheel is limited to slip.

By providing the spring, since the elastic force of the spring is gradually increased as the compression amount is increased, the force applied to the parking brake in the drive wheel is also gradually increased, thereby preventing the drive wheel from being locked.

The utility model discloses increase this controlling means on original parking brake's basis, do not have the influence to original parking braking system, simple structure, the reliability is high, and it is easy to realize, both can regard as the host computer factory to adorn the car, also can be used to the repacking at the car, has good economic benefits and social, has higher practicality and popularization nature.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view taken along plane D-D of fig. 1.

Fig. 3 is a schematic diagram of the control device of the present invention.

Wherein, 1, a base; 2. a limit nut; 3. a right upper spring seat; 4. a right spring; 5. a driven gear; 6. a driven gear position sensor; 7. a right lower spring seat; 8. a right L-shaped slider; 9. a right tension bar; 10. a base right guide groove; 11. bolt holes; 12. a hand brake tension balancing lever; 13. a right limit stop; 14. a left limit stop; 15. a base left guide slot; 16. a left tension bar; 17. a left L-shaped slider; 18. a left lower spring seat; 19. a left spring; 20. a driven gear shaft; 21. a flat bond; 22. a drive shaft; 23. a drive gear; 24. a panel; 25. a bolt and a nut; 26. a drive motor; 27. a motor fixing screw; 28. a control unit; 29. an ignition switch; 30. a neutral switch; 31. a left driving wheel speed sensor; 32. a right driving wheel speed sensor; 33. a vehicle speed sensor; 34. a switch unit.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1, it is a schematic structural diagram of a wheel slipping and escaping device of a rear-drive automobile.

The utility model discloses a back-drive auto wheel device of getting rid of poverty that skids includes unilateral pulling force drive arrangement and controlling means, unilateral pulling force drive arrangement includes base 1, and two vertical guide ways have been seted up to the symmetry in the base 1, as shown in fig. 1, including base right side guide way 10 and base left side guide way 15, vertical guide way respectively with L shape slider swing joint, make L shape slider can make the axis motion along vertical guide way. The front part of the L-shaped sliding block is provided with a tension rod in a penetrating way, and a spring is sleeved on the tension rod; the spring is a helical spring.

Wherein, the right guide groove 10 of the base is movably connected with the front part of the right L-shaped sliding block 8, a right tension rod 9 is arranged on the right L-shaped sliding block 8 in a penetrating way, and the upper part of the right L-shaped sliding block 8 is connected with the right spring 4; the left guide groove 15 of the base is movably connected with the front part of a left L-shaped sliding block 17, a left tension rod 16 penetrates through the left L-shaped sliding block 17, and the upper part of the left L-shaped sliding block 17 is connected with a left spring 19.

One end of the spring is abutted against the upper end of the front part of the L-shaped sliding block, and the other end of the spring is fixedly connected with the upper end of the tension rod through an upper spring seat; the upper end of the tension rod is provided with a threaded part, a limiting nut 2 is installed on the threaded part, and the limiting nut is abutted to the upper spring seat. The lower end of the spring is fixedly connected with a lower spring seat, and the lower spring seat is abutted against the upper end of the front part of the L-shaped sliding block.

Specifically, the lower end of the right spring 4 is abutted against the upper end of the front part of the right L-shaped sliding block 8 through a right lower spring seat 7, and the other end of the right spring is fixedly connected with a right upper spring seat 3; the lower end of the left spring 19 abuts against the front upper end of the left L-shaped slider 17 via the left lower spring seat 18.

A rack is arranged on the rear side of the L-shaped sliding block, the rack is meshed with a gear set, and the gear set is in transmission connection with a driving motor 26; the outer side of the base 1 is provided with a panel 24, as shown in fig. 2, a driving motor 26 is arranged on the panel 24 through a motor fixing screw 27, and the driving motor 26 is electrically connected with the control device.

Specifically, the gear set comprises a driven gear 5 in meshed connection with the rack, and the driven gear 5 is in meshed connection with a driving gear 23 to achieve the functions of speed reduction and torque increase; a driving shaft 22 of a driving motor 26 is fixedly connected with a driving gear 23 through a flat key 21; the driven gear 5 is clearance-fitted with a driven gear shaft 20 at the center thereof. A driven gear position sensor 6 is arranged in the base 1 and adjacent to the driven gear 5 to acquire the number of turns of the driven gear 5 and transmit a signal to the control unit 28, and the control unit 28 controls the driving motor 26 to drive the L-shaped sliding block to reset according to the signal.

During operation, the driving motor 26 rotates to transmit force to the driving gear 23 through the driving shaft 22 and the flat key 21, and then the force is transmitted to the rack after being decelerated and increased in torque through the driven gear 5, so that the right L-shaped sliding block 8 and the left L-shaped sliding block 17 are driven to move along the guide grooves.

The lower part of the tension rod is sleeved with a hand brake tension balance lever 12, and a limit stop is sleeved at the connecting part of the tension rod and the hand brake tension balance lever 12. The lower end of the tension rod is connected with the left and right guys of the original hand brake. A round hole is processed above the middle part of the hand brake tension balancing lever 12 and is used for connecting the balancing lever with an original vehicle operating handle; the outer sides of the two ends are provided with circular channels, and the tension rod passes through the holes and is in clearance fit.

Specifically, the lower part of the right tension rod 9 is sleeved with a right limit stop 13, and the left tension rod 16 is sleeved with a left limit stop 14. As shown in figure 1, C is connected with the original hand brake operating system, A is a left hand brake cable, and B is a right hand brake cable.

As shown in fig. 3, the control device includes a control unit 28 electrically connected to the drive motor 23, and the control unit 28 is electrically connected to a switch unit 34, the driven gear position sensor 6, and an idle switch 30, an ignition switch 29, a wheel speed sensor, and a vehicle speed sensor 33, which are already present on the original vehicle, respectively. The driving motor 23 is a 12V dc motor, and the driven gear position sensor 6 is an electromagnetic induction sensor.

Specifically, the wheel speed sensors include a left driving wheel speed sensor 31 and a right driving wheel speed sensor 32. The control unit is a singlechip.

The following is the description of the working principle of the present invention:

determination of one-side drive wheel slip: as shown in fig. 3, when the switch unit 34 is closed and the control unit 28 is in the working state, the control unit 28 first collects signals of the ignition switch 29 and the neutral switch 30.

If the ignition switch signal is ON and the neutral switch is OFF, the vehicle can be judged to be in the running state; the control unit 28 collects the signal of the vehicle speed sensor 33, if the vehicle speed is 0, it can be determined that the driving wheel is in a slipping state, and then the rotation speed signals of the left driving wheel speed sensor 31 and the right driving wheel speed sensor 32 are compared, wherein the wheel which rotates fast is the slipping wheel.

Intervention of slipping wheels, taking right wheel slip as an example: after the control unit 28 determines that the slipping wheel is the right wheel, the control unit controls the driving motor 26 to work and records the initial signal of the driven gear position sensor 6; the driving motor 26 drives the driving gear 23 to rotate clockwise and the driven gear 5 to rotate counterclockwise through the driving shaft 22 and the flat key 21, i.e. n in fig. 1_LAnd (4) direction.

The right L-shaped slide block 8 is driven to move upwards by a gear rack, namely F in figure 1_LThe direction, left L shape slider downstream does not pass power for the idle stroke this moment, passes power to right side lower part spring holder 7 and right side spring 4, and right side spring 4 is compressed, and elasticity increases gradually to pass right side lower part spring holder 7 and right tension pole 9 with elasticity, right tension pole 9 upward movement drives parking brake right side cable B upward movement, and the parking brake in the right side drive wheel works to the skidding of restriction right side drive wheel.

Since the elastic force of the right spring 4 is gradually increased as the compression amount is increased, the force applied to the parking brake in the right driving wheel is also gradually increased, which prevents the driving wheel from being locked.

In the process of intervening in the driving wheel parking brake, the control unit 28 simultaneously collects signals of a vehicle speed sensor 33, a left driving wheel speed sensor 31 and a right driving wheel speed sensor 32, and when the vehicle speed is calculated to be not 0 and the rotating speed difference of the two driving wheels is less than 30%, the vehicle can be judged to be out of the way. Since it is generally considered that the wheel speed difference at the time of normal turning is allowed to be not more than 30%.

When the vehicle is out of the trouble, the control unit 28 reversely supplies power to the driving motor 26, the driving motor 26 reversely rotates, the right L-shaped sliding block 8 moves downwards, the tension of the right tension rod 9 is gradually released, and the braking force of the right parking brake is also gradually released.

At the same time, the control unit 28 collects the signal of the driven gear position sensor 6, the signal is compared with the recorded initial signal to judge whether the gear returns to the initial position, once the gear returns to the initial position, the power supply to the driving motor 26 is stopped, and the whole working process is finished.

The intervention process of the left driving wheel slipping is the same and will not be described.

And (3) a conventional parking braking process: the switching unit 34 is switched off in the control device, the device of the present invention is in an inoperative state.

When needing conventional parking, the driver operates former car action bars, reaches the C department of manual brake tension balance lever 12 with the pulling force, and manual brake tension balance lever 12 moves to C department arrow direction in the picture, drives limit stop and pull rod and moves to C department arrow direction together, and the cable produces the pulling force to parking brake simultaneous working about making, this process is the same with former car parking working process.

The tension rod is in clearance fit with the channel, the spring seat and the spring on the sliding block, so that the motion of the tension rod along the arrow direction at the position C is not influenced.

The foregoing description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.

Claims (10)

1. The rear-drive automobile wheel slipping escaping device is characterized by comprising a unilateral pulling force driving device and a control device, wherein the unilateral pulling force driving device comprises a base, two longitudinal guide grooves are symmetrically formed in the base, the longitudinal guide grooves are respectively and movably connected with an L-shaped sliding block, a pulling rod penetrates through the front part of the L-shaped sliding block, and a spring is sleeved on the pulling rod; one end of the spring is abutted against the upper end of the front part of the L-shaped sliding block, and the other end of the spring is fixedly connected with the upper end of the tension rod through an upper spring seat; the lower part of the tension rod is sleeved with the hand brake tension balance lever;

a rack is arranged on the rear side of the L-shaped sliding block, the rack is meshed with a gear set, and the gear set is in transmission connection with a driving motor; the base outside is provided with the panel, driving motor sets up on the panel, and driving motor is connected with controlling means electricity.

2. The rear-drive automobile wheel slipping escaping device as claimed in claim 1, wherein the upper end of the tension rod is provided with a threaded portion, a limit nut is mounted on the threaded portion, and the limit nut abuts against the upper spring seat.

3. The rear-drive automobile wheel slipping escaping device as claimed in claim 2, wherein the lower end of the spring is fixedly connected with a lower spring seat, and the lower spring seat is abutted against the upper end of the front part of the L-shaped sliding block.

4. The rear-drive vehicle wheel slipping escaping device as claimed in claim 1, wherein the gear set comprises a driven gear meshed with the rack, the driven gear is meshed with a driving gear, and the driving gear is fixedly connected with a driving shaft of the driving motor.

5. The rear-drive automobile wheel slipping escaping device as claimed in claim 1, wherein a limit stop is sleeved on a connecting part of the tension rod and the hand brake tension balance lever.

6. The rear-drive vehicle wheel slipping escaping device according to claim 3, wherein the control device comprises a control unit electrically connected with the driving motor, and the control unit is electrically connected with the switch unit and the driven gear position sensor respectively.

7. The rear drive vehicle wheel slip escape apparatus of claim 6 wherein the driven gear position sensor is disposed within the base adjacent the driven gear position.

8. The rear drive vehicle wheel slip escape device of claim 1 wherein the spring is a coil spring.

9. The rear-drive vehicle wheel slip escape device according to claim 6, wherein the drive motor is a 12V DC motor.

10. The rear drive vehicle wheel slip escape device of claim 6, wherein the driven gear position sensor is an electromagnetic induction type sensor.