JPS6194825A - Low-cost auxiliary driving device for car - Google Patents

Abstract

PURPOSE:To eliminate impossibility of a car to run on a snow road, by a method wherein an auxiliary driving member is removably attached to the under surface of a car body on the non-driving side, and a rotary part is earthed to a road surface to bring the car into an auxiliary running state. CONSTITUTION:When front wheels are slipped on a snow road, a battery voltage is first fed to an electric motor 16 for elevation through control of a starting switch. A rotary driving part 11 is lowered through expansion of a paragraph mechanism 15, and a belt 20 of the rotary driving part 11 is earthed to a road surface 23. The feed of a current to the electric motor 16 is stopped through control of the starting switch, and a battery voltage is fed to an electric motor 18 for running to rotate and drive a driving roller 19. This causes a car to effect auxiliary running to release the car from a front wheel slip state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a simple auxiliary drive device for an automobile.

[Prior art]

There are two known drive systems for automobiles: the usual general drive system in which either the front wheels or the rear wheels are driven by the engine, and the four-wheel drive system in which both the front wheels and the rear wheels are driven by the engine. ing. By the way, in cars using the former drive system, due to the way the car is driven, when driving on rough roads such as snowy roads, there is a risk that the wheels on the drive side may slip and become unable to drive. The latter type of four-wheel drive vehicle is advantageous because even if one of the front wheels or rear wheels slips, the vehicle can continue to travel using the other wheel, so there is less risk of the vehicle being unable to travel as described above. However, four-wheel drive vehicles have a more complex structure and are more expensive than the front drive systems, so it is difficult to drive on snowy roads using a simple method. It is required to be able to eliminate the inability to drive.

In order to meet these requirements, an auxiliary drive device as shown in Japanese Utility Model Application No. 58-112636 has been proposed. In this case, a roller is pressed against the wheel on the non-drive side, and the roller is rotated by a motor to drive the wheel on the non-drive side.

However, with the device described in the above-mentioned conventional publication, no consideration is given to attaching or detaching it to the vehicle body, and the structure and the fact that it is always attached to the vehicle body increase the weight of the vehicle body and reduce fuel efficiency. However, it was also disadvantageous in terms of space.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of these problems, the present invention aims to provide a simple auxiliary drive device for an automobile that can eliminate the inability to drive on snowy roads and the like, and can be easily attached and detached.

[Structure of the invention]

Therefore, the present invention provides a support part on the lower surface of the vehicle body near the non-drive wheel, and provides an auxiliary drive on this support part, which consists of a main body part that moves up and down, and a rotation drive part whose rotation part is driven by a motor. The parts are removably attached and the rotating part is grounded on the road surface to allow the vehicle to travel auxiliary.

" 〔Example〕 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 3 show a simple auxiliary drive device for an automobile according to an embodiment of the present invention, and this is an example applied to a front engine/front drive type automobile. In the automobile 1, an engine 3 is mounted on the front of the vehicle body 2, and the engine 3 is connected to front wheels 5 via a transmission and a differential gear 4. In this way, the automobile 1 has its front wheels 5 driven by the engine 3. It has become so.

Auxiliary drive devices 6 are provided on both sides of the rear of the automobile 1.
is provided. In this auxiliary drive device 6, a support portion 7a for attaching an auxiliary drive member 9 is formed in the side sill 7 of the vehicle body 2 near the rear wheel 8, which is a non-drive side wheel. It is composed of a main body part 10 and a rotation drive part 11, and the main body part 10 has a mounting part 12.
The mounting part 12 is removably fastened to the support part 7a of the side sill 7 with a bolt 14a and a nut 14b. The elevating section 13 is composed of a rectangular bank mechanism 15 and an electric motor 16 that moves the bank mechanism up and down in the vertical direction.

Further, in the rotary drive unit 11, a housing 17 thereof is connected to the lower end of the bank mechanism 15, an electric motor 18 is attached to the housing 17, and a pair of front and rear drive rollers 19 are installed in the housing 17 to rotate. A belt 20 is stretched between the driving rollers 19, which are freely supported. Also, a gear 2 is attached to the shaft 19a of one of the drive rollers 19.
1 is provided, and the gear 21 meshes with a gear 22 provided on the shaft of the drive motor 18, thus forming a rotating section 24 that is driven by the electric motor 18 and rotates while being in contact with the road surface 23. There is.

Although not shown in the automobile 1, the electric motors 15, 1 are connected to the trunk of the automobile 1 via a lead wire 25.
A driving buffer for supplying electric power to the electric motors 15 and 18 is mounted, and a start switch for controlling the electric power supply to the electric motors 15 and 18 is provided on the instrument panel in the vehicle interior.

Next, the effects will be explained.

When installing this device on the vehicle body 2, the mounting part 1 of the main body part 10
2 into the support part 7a of the vehicle side sill 7, and connect the two using the bolt 14a and the bolt 14b.
- When removing the bracing device from the car body, 2) 14a
, just loosen the nut 14b and disconnect the two.

If the front wheel 5 slips on a snowy road, etc., first operate the start switch to supply battery voltage to the electric motor 16 for lifting, extend the bank mechanism 15 and lower the rotary drive unit 11, and drive the rotary drive. When the belt 20 of the section 11 comes into contact with the road surface 23, the power supply to the electric motor 16 is stopped by operating the start switch, and the driving roller 19 is rotated by supplying the puffer voltage to the traveling electric motor 18. , As a result, the automobile 1 performs auxiliary driving and the front wheel slip state is reduced to Mtia. car 1
When the front wheel leaves the slip state, the power supply to the electric motor 18 is stopped by operating the start switch, and
It is sufficient to supply power to the electric motor 16 in the opposite direction to that described above to rotate the electric motor 16 in the reverse direction, and then the bank mechanism 1
5 is contracted and the rotational drive unit 11 is raised, so that the normal running state using the front wheels 5 is returned.

In addition, when replacing the rear wheel 8, power is supplied to the elevating electric motor 16 by operating the start switch, and the bank mechanism 1.5 is extended even after the bell 20 of the rotary drive unit 11 touches the road surface 23. If so, the f&wheel 8 can be lifted off the road surface 23, and in this way, the present device can also be used as a normal jack.

In the device of this embodiment as described above, when the front wheels slip on a snowy road or the like and the vehicle becomes unable to drive, the rotary drive unit makes the vehicle auxiliary travel, so that the disabled state can be immediately resolved.

In addition, in this device, the rotating part is composed of a pair of rollers and a belt, so the ground contact area of the rotating part can be large, and as a result, the car can run reliably even if the road surface is somewhat uneven. The inoperable condition can be resolved.

In addition, in this device, the device is used only to release the front wheels from slipping, so the device does not need to be very large. It doesn't require that much capacity.

Additionally, with this device, it is very easy to attach and detach the device as mentioned above, and as a result, it can be removed when it is not needed and installed when it is needed, which reduces fuel consumption and space. It is very advantageous.

In the above embodiment, the rotary portion is provided with two drive ports and rollers, but the number of drive rollers may be one. Further, the bank mechanism of the elevating section may be not a rectangular bank mechanism but a dogleg-shaped one.

Furthermore, the elevating section may be constructed of a cylinder mechanism instead of the bank mechanism and electric motor. Further, the present invention is applicable not only to a front engine/front drive system but also to other types, such as a front engine/rear drive system.

〔Effect of the invention〕

As described above, according to the simple auxiliary drive device for an automobile according to the present invention, a support portion is provided on the lower surface of the vehicle body near the non-drive wheel, and a main body portion that moves up and down and a rotation portion driven by a motor are attached to this support portion. An auxiliary drive member consisting of a rotary drive unit that drives the vehicle is removably attached, and the rotary unit is grounded on the road surface to allow the vehicle to travel auxiliary, thereby reliably eliminating the inability to drive on snowy roads, etc. Moreover, it is easy to attach and detach, which is advantageous in terms of fuel efficiency and space.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an automobile equipped with a simple auxiliary drive device according to an embodiment of the present invention, FIG. 2 is a side view of the device, and FIG.
The figure is a sectional view of the above device. 1...Car, 3...Engine, 5...Front wheel, 6
... Auxiliary drive device, No. 7 Idsil (vehicle body), 7
a... Support part, 8... Rear wheel, 9... Auxiliary drive member, 10... Main body part, 11... Rotation drive part, 12...
・Mounting part, 13... Lifting part, 18... Electric motor,
24...Rotating part. Patent applicant Mazda Motor Corporation Figure 1

Claims (1)

[Claims] (1) In an automobile in which either the front wheels or the rear wheels are driven by an engine, a support part for an auxiliary drive member is provided on the vehicle body near the non-drive wheel, and the auxiliary drive member is connected to the main body part and the rotary drive part. The main body section includes an attachment section that is detachably attached to the vehicle body side support section, and an elevating section that vertically raises and lowers the rotary drive section, and the rotary drive section includes an electric motor; 1. A simple auxiliary drive device for an automobile, comprising: a rotating part that is driven by a motor and rotates while being in contact with a road surface.