JPS637537Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a driving force transmission device that is used in emergencies such as when an automobile becomes unable to drive on soft ground such as muddy and sandy ground.

Conventionally, in front-wheel drive or rear-wheel drive vehicles, when the drive wheels start spinning on soft ground such as muddy sand, it becomes difficult to escape from the soft ground on your own, and the vehicle must be towed by another vehicle. Or, they were pulled out of soft ground by a winch.

The present invention was developed in consideration of these points, and is an easy-to-handle vehicle emergency vehicle that transmits driving force between the driving wheels and the driven wheels to enable self-evacuation on soft ground such as muddy and sandy ground. The object of the present invention is to provide a driving force transmission device for use when the vehicle is in use.

In order to achieve the above object, the present invention includes a driving drum that can be detachably attached to a driving wheel, a driven drum that can be detachably attached to a driven wheel, one end of which is wrapped around the driven drum, and a driven drum that can be detachably attached to a driven wheel. It is characterized by consisting of a transmission wire whose other end can be connected to the drum.

Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. First, in Fig. 1 showing an embodiment when the present invention is applied to a front-wheel drive vehicle, an engine 2 is provided at the front of a vehicle body 1 of the vehicle. , the driving force of the engine 2 is provided by a transmission 3 attached to the engine 2.
is transmitted to. The transmission 3 includes a speed change mechanism, a reduction mechanism, and a differential mechanism, and the output of the transmission 3 is transmitted to the left and right drive shafts 6 and 7 via a pair of left and right universal joints 4 and 5, and further to the left and right drive shafts 6 and 7. The power is transmitted from the drive shaft 6 to the left front wheel 9 via the universal joint 8, and from the right drive shaft 7 to the right front wheel 10 via the universal joint 11. Therefore, the left and right front wheels 9,
10 serves as a driving wheel, and left and right rear wheels 12 and 13 serve as driven wheels to drive the vehicle.

When such a vehicle is running on muddy and sandy ground and the left and right front wheels 9, 10 spin and become difficult to drive on its own, the driving force of the front wheels 9, 10 is transmitted to the left and right rear wheels 12, 13. However, in order to temporarily enable self-driving as a four-wheel drive vehicle, a driving force transmission device 14 according to the present invention is provided.

This driving force transmission device 14 includes drive drums 15 and 16 that can be detachably attached to left and right front wheels 9 and 10 as drive wheels, respectively, and drive drums 15 and 16 that can be detachably attached to left and right rear wheels 12 and 13 as driven wheels, respectively. driven drums 17, 18, and corresponding driving and driven drums 15, 17; 16, 18 on both left and right sides.
transmission wires 19 and 20 connecting the two.

In FIG. 2, the drive drum 15 is basically formed in a cylindrical shape, and one end 21 thereof is flared outward. Further, an annular protrusion 23 protruding radially outward is provided near the other end 22 of the drive drum 15, and the transmission wire 1 is disposed between the annular protrusion 23 and the one end 21.
Nine winding units 24 are provided. The end of the transmission wire 19 is connected to the drive drum 15 .

Referring also to FIG. 3, the other end 22 of the drive drum 15 is provided with four recesses 26 for removably attaching it to the wheel 25 of the left front wheel 9.
These recesses 26 are provided corresponding to the cap nuts 31 that are screwed onto four bolts 30 for connecting the wheel 25 and the disc 28 of the disc brake device 27 and the axle 29, and each cap nut 31 is inserted into the recesses 26. The inner diameter is as large as possible. Drive drum 15
is very easily attached to the front wheel 9 by fitting each recess 26 into each cap nut 31. It is also extremely easy to remove the drive drum 15 from the wheel 9.

A guide member 32 for the transmission wire 19 is rotatably attached to the drive drum 15 . The guide member 32 is supported within the drive drum 15 so as to have the same axis and be rotatable relative to the drum 15. The cylindrical base portion 33 and the guide portion 34 that protrudes outward from one end portion 21 of the drive drum 15, is further bent, and extends along the outer side of the drive drum 15 are integrally formed, and the play of the guide portion 34 is reduced. A guide hole 35 is bored at the end corresponding to the winding portion 24 .

A pair of annular protrusions 36 and 37 are provided on the inner surface of the drive drum 15 at positions spaced apart from each other in the axial direction. 40 and 41 are brought into contact with each other. Further, the base 33 of the guide member 32 has an outer periphery close to one end 21 of the drive drum 15 and the other end 2.
A contact surface 42 facing the second side is provided, and this contact surface 4
An inner ring 44 forming a bearing 38 with balls 43 interposed between the outer ring 40 and the outer ring 40 is brought into contact with the inner ring 2 . Further, an inner ring 46 is fitted into the base 33 with a cylindrical spacer 45 interposed between the inner ring 44 and the inner ring 44.
A bearing 39 is constructed with a ball 47 interposed between the bearing 6 and the outer ring 41. The drive drum 1 of the base 33
A male threaded portion 48 is formed on the end of the bearing 5 near the other end 22, and a nut 50 is screwed into the male threaded portion 48 with a washer 49 interposed between the inner ring 46 of the bearing 39 and the inner ring 46 of the bearing 39. Ru. As a result, each bearing 38, 3
9 is held, and the base 33, that is, the guide member 32 is rotatably supported.

Guide hole 35 at the free end of the guide portion 34
is set to be located approximately at the center of the winding section 24. Also, the width l and height h of the guide hole 35
are set so that the transmission wire 19 is evenly wound around the winding portion 24 and is not caught in the guide hole 35.

Such a guide member 32 is connected to the driving drum 15.
rotates to wind up the transmission wire 19, the fourth
It rotates as shown in the figure and guides the transmission wire 19 to the drive drum 15. Moreover, since the guide member 32 is rotatable, the guide member 32 does not become a resistance to the pulling force of the transmission wire 19, and smooth winding is possible. Since it is in the center, transmission wire 1
9 will not come off from the winding section 24 or will not wind up irregularly. Furthermore, such a guide member 32
By using this, it becomes easy to wind the transmission wire 19 around the drive drum 15 manually. That is, by manually rotating the guide member 32 with the transmission wire 19 inserted into the guide hole 35, the transmission wire 19 is wound around the winding portion 24, which facilitates maintenance.

Such a structure of the drive drum 15 is similar to that of the remaining drums, that is, the drive drum 1 mounted on the right front wheel 10.
6 and the driven drums 17, 18 mounted on the left and right rear wheels 12, 13 are all the same.

Next, to explain the operation of this embodiment, in an emergency when the left and right front wheels 9 and 10 begin to spin while the car is running on soft ground such as muddy and sandy land and it becomes impossible to drive on its own, the left and right front wheels 9 and 10 , 10, and driven drums 17, 18 with one end of transmission wires 19, 20 wrapped in advance are mounted on the left and right rear wheels 17, 18, respectively. , 20 are connected to drive drums 15 and 16, respectively. Next, by driving the engine 2, the drive drums 15, 16 rotate according to the idle rotation of the front wheels 9, 10, and the transmission wires 19, 20 are wound around the drive drums 15, 16. Accordingly, the driven drums 17 and 18 attached to the rear wheels 12 and 13 rotate, and the rear wheels 1
2 and 13 are each driven to rotate. As a result,
This car temporarily becomes a four-wheel drive vehicle, with one rear wheel
The driving force of 2 and 13 makes it possible to escape from the muddy and sandy area by one's own power.

As described above, according to the present invention, there is provided a driving drum that can be detachably attached to a driving wheel, a driven drum that can be detachably attached to a driven wheel, and one end of which is wrapped around the driven drum and which is attached to the driving drum. Since it is equipped with a transmission wire that can connect the other end, in an emergency when the drive wheel is spinning on soft ground such as muddy and sandy ground, the drive drum can be attached to the drive wheel, and the driven drum can be attached to the driven wheel.
By connecting the other end of the transmission wire, one end of which is wrapped around the driven drum, to the drive drum, the driving force of the idling drive wheel can be reliably transmitted to the driven wheel via the transmission wire, and therefore the drive wheel is Even if the vehicle spins idly, it is possible to run under its own power without being towed by other vehicles, winches, etc., which is extremely convenient. Moreover, the connection between the two drums can be easily achieved by simply connecting the transmission wire, one end of which is wound around the driven drum, to the drive drum, so an endless type winding transmission mechanism is used as the connection means. The attachment and detachment operations are much easier than those previously used, and work can proceed quickly and accurately even in the above-mentioned emergency. Furthermore, even if the amount of wire wound between the two drums is finite and there is a limit to the distance that can be traveled on one's own power, the actual travel distance required to escape from soft ground in the emergency is generally extremely short. Therefore, there is no problem in practical use.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a simplified plan view when the device of the present invention is used in a front-wheel drive vehicle, and Fig. 2 is a longitudinal cross-sectional view showing the state in which a rotating drum is installed. , FIG. 3 is a sectional view taken along the - line in FIG. 2, and FIG. 4 is a left side view of FIG. 2. 9, 10...Left and right front wheels as driving wheels, 1
2, 13...Left and right rear wheels as driven wheels, 14
...Driving force transmission device, 15, 16... Drive drum, 17, 18... Driven drum, 19, 20...
transmission wire.

Claims (1)

[Scope of utility model registration request] A driving drum that can be detachably attached to a driving wheel, a driven drum that can be detachably attached to a driven wheel, and a transmission wire that has one end wrapped around the driven drum and whose other end can be connected to the driving drum. A driving force transmission device for automobiles in emergencies.