KR19990034901A - Steering device of a car - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering apparatus of an automobile, wherein in a steering apparatus of an automobile, the steering shaft 20 of the steering apparatus includes a first steering shaft 22 inserted into a steering column 4 and a hollow portion at one end thereof. 30 is integrally formed with a second steering shaft 28, and a spline 26 is formed on an outer circumferential surface of one end of the first steering shaft 22, and the hollow portion of the second steering shaft 28 30) a spline 32 corresponding to the spline 26 of the first steering shaft 22 is formed on one side of the inner circumferential surface, and the oil 70 is filled inside the hollow part 30 to absorb vibrations and shocks. And a gas spring 50 configured to mitigate vibration and impact forces on the steering shaft 20, wherein one end of the gas spring 50 is formed on the second steering shaft 28. Outer circumference It is fixed to the side, and the other end is rotatably provided on the outer circumferential surface of the steering column (4) to absorb the vibration and shock of the vehicle caused by the irregular road surface condition during the driving of the vehicle to improve safety during steering and driving, collision of the vehicle It is useful to protect the driver by absorbing the impact force generated in the city.

Description

Steering device of a car

The present invention relates to a steering apparatus of a vehicle, and more particularly, by providing oil in one side of a steering shaft of a steering apparatus provided in a vehicle to absorb vibrations and shocks of the vehicle caused by irregular road conditions during driving of the vehicle. The present invention relates to a steering apparatus of a vehicle for improving safety during steering and driving, and for absorbing impact force generated during a collision of a vehicle to protect the driver.

As is well known, the steering apparatus provided in the vehicle is a device for the driver to arbitrarily change the driving direction of the vehicle. The steering mechanism of the steering apparatus will be described below with reference to the accompanying drawings.

1 is a view illustrating a general vehicle steering apparatus.

As shown, a steering column 4 fixed to a vehicle body (not shown), and one end of the steering column 4 inserted into the steering column 4 are connected to the steering wheel 2 of the driver's seat to rotate the steering wheel 2. The steering shaft 6 which is rotated accordingly, the inter tube shaft 8 which is universally jointed with the other end of the steering shaft 6, and the universal joint which is universally joined with the other end of the intertube shaft 8 It consists of an intermediate shaft (Intermidiate Shaft) 10, the steering gear 12 that is geared (Gearing) and operates with the intum shaft (10).

The steering gear 12 is installed in the transverse direction of the vehicle, and serves to change the direction of the wheels 16 through, for example, a tie rod 14 or the like.

The steering column 4 and the intertube shaft 8 consist of hollow steel tubes.

However, the steering apparatus of the conventional vehicle made as described above causes the vehicle body to be shaken by the irregular road surface during the driving of the vehicle, and also causes the vehicle body to be shaken by the irregular road surface during the rotation of the vehicle. The vibrations and shocks are transmitted to the steering wheel of the driver's seat through the steering mechanism of the vehicle due to the shaking of the body body, which makes the driver feel tired easily, and furthermore, the steering force is lost due to the shaking of the steering wheel, causing accidents. There was a problem that can be made.

In addition, the impact force generated during the frontal collision of the vehicle is transmitted to the driver's seat through the steering device of the vehicle as it is, there is a problem that the driver is fatally injured by the steering wheel.

The present invention has been made to solve the problems of the prior art as described above, so that the vibration and impact force transmitted to the driver's seat in the cabin due to the shaking of the body body when the vehicle is traveling on the road of irregular road surface is absorbed in the steering shaft. The driver can provide comfort to the driver, and the vibration and impact force of the vehicle generated by irregular road conditions are absorbed to improve steering and driving safety, and the impact force generated during the collision of the vehicle is absorbed. The object of the present invention is to provide a steering device for a vehicle so as to safely protect it.

The technical configuration of the present invention for achieving the above object is a steering device of a vehicle, the steering shaft of the steering device is a first steering shaft inserted into the steering column and a second steering shaft formed integrally with a hollow at one end Spline is formed on the outer circumferential surface of one end of the first steering shaft, a spline corresponding to the spline of the first steering shaft is formed on one side of the inner circumferential surface of the hollow part of the second steering shaft, and oil is formed inside the hollow part. And a steering shaft that is charged to absorb vibrations and shocks.

In addition, the steering shaft is provided with a gas spring to mitigate vibration and impact force, one end of the gas spring is fixed to one outer peripheral surface of the second steering shaft, the other end is rotatably provided on the outer peripheral surface of the steering column It features.

1 is a view showing a steering apparatus of a general vehicle

Figure 2 is an exploded perspective view showing a steering shaft of the vehicle according to the invention

Figure 3 is a partial cross-sectional view showing a coupling state of the steering shaft according to the invention

Figure 4 is a state diagram showing the shock absorbing structure of the steering device when the vehicle collision in accordance with the present invention

Explanation of symbols on the main parts of the drawings

2: steering wheel 4: steering column

6: steering shaft 8: intertube shaft

10: intum shaft 12: steering gear

20: steering shaft 22: first steering shaft

26,32 spline 28: second steering shaft

30: hollow part 34: injection hole

36: oil cap 38: stopper

38a: step groove 40: felt ring

50: gas spring 52: guide part

60: guide groove 70: oil

80: bolts

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view showing a steering shaft of a vehicle according to the present invention, Figure 3 is a partial cross-sectional view showing a coupling state of the steering shaft according to the present invention, Figure 4 is a vehicle collision according to the present invention It is a state diagram which shows the shock absorption structure of a steering apparatus.

As shown, in the steering apparatus of an automobile, the steering shaft 20 of the steering apparatus includes a first steering shaft 22 inserted into the steering column 4 and a hollow portion formed at one end thereof with a hollow portion ( 30 is divided into a second steering shaft 28 integrally formed.

A spline 26 is formed on an outer circumferential surface of one end of the first steering shaft 22.

A spline 32 is formed at one side of the inner circumferential surface of the hollow part 30 of the second steering shaft 28 corresponding to the spline 26 of the first steering shaft 22.

The spline 32 formed inside the hollow part 30 of the second steering shaft 28 is formed to be longer than the spline 26 formed on the first steering shaft 22.

In addition, the opening side of the hollow portion 30 is provided with a disk-shaped stopper 38 through which the center portion is penetrated and fastened and fastened by bolts 80, and a stepped groove 38a is provided on the inner circumferential surface of the stopper 38. It is formed, the stepped groove 38a is provided with a felt ring 40 press-fitted to maintain the airtight or watertight.

The oil 70 is filled in the hollow part 30 of the second steering shaft 28, and the oil 70 is formed to communicate with the inside of one side of the outer circumferential surface of the hollow part 30. Filled into the hollow portion 30 through the), one end of the injection hole 34 is provided with an oil cap 36 made detachable by screwing.

Inside the hollow portion 30 of the second steering shaft 28 to which the first steering shaft 22 is coupled to the splines 26 and 32, oil 70 is filled through the injection hole 34, and the hollow portion The hollow part is prevented from leaking the oil 70 by the felt ring 40 of the stopper 38 fixed by the bolt 80 at the opening side of the hollow part 30 to prevent vibration and shock caused by the shaking of the vehicle. Absorbed by the oil 70 filled in (30).

In addition, a gas spring 50 having one end fixed to the outer circumferential surface of the hollow part 30 of the second steering shaft 28 is provided, and the other end of the gas spring 50 rotates on the outer circumferential surface of the steering column 4. It is possible.

The other end of the gas spring 50 is protruded downward and both sides of the guide portion 52 is formed, the outer peripheral surface of the steering column 4 corresponding to the guide portion 52 of the gas spring 50 is Guide portion 52 is not separated, the guide groove 60 to be guided is formed.

In the steering apparatus of the vehicle according to the present invention configured as described above, the operator first presses the stopper 38 into the first steering shaft 22 and then provides the first steering shaft 22 with the second steering shaft ( The splines 26 and 32 are coupled to the hollow portion 30 of the 28.

In addition, the stopper 38 provided in the first steering shaft 22 is fixed to the opening side of the hollow part 30 with the bolt 80, and the injection hole 34 formed on the outer circumferential surface of the hollow part 30. The oil 70 is injected to fill the oil 70 inside the hollow part 30. Thereafter, the oil cap 36 may be mounted on the injection hole 34 of the hollow part 30.

Thus, when the driver operates the steering wheel 2 of the vehicle, the first steering shaft 22 connected to the steering wheel 2 rotates in the same direction as the steering wheel 2, and the first steering shaft The hollow portion 30 which is coupled to the first steering shaft 22 by the splines 26 and 32 by the rotation of the 22 and integrally formed on the second steering shaft 28 is also the same as the first steering shaft 22. Direction, the rotational force is transmitted to the intertube shaft 8, the intum shaft 10, and the steering gear 12 of the steering apparatus so that the wheel 16 rotates.

In addition, when the steering shaft 20 rotates, the gas spring 50 having one end fixed to the second steering shaft 28 also rotates in the same direction as the second steering shaft 28, and the gas spring 50 The other end of the steering shaft 20 is inserted into the guide groove 60 formed on the outer circumferential surface of the steering column 4 at both sides thereof and is moved along the outer circumferential surface of the steering column 4. When the gas spring 50 is also rotated in the same direction as the steering shaft 20.

In addition, the vibration and impact of the body body caused by the shaking of the vehicle when the vehicle travels on an irregular road surface may be caused by the tie rod 14, the steering gear 12, the intum shaft 10, and the interlock from the wheel 16. When it is transmitted to the second steering shaft 28 through the tube shaft 8, vibration and shock are absorbed by the oil 70 filled in the hollow part 30 of the second steering shaft 28 and the interior of the vehicle interior. Will be prevented from being transferred to the steering wheel 2.

In addition, during a frontal collision of the vehicle, the impact force generated by the collision is transmitted through the steering device, and the impact force is primarily absorbed by the oil 70 filled in the hollow portion 30 of the second steering shaft 28. When the hollow part 30 of the second steering shaft 28 is pushed toward the first steering shaft 22 side, the gas spring 50 provided in the hollow part 30 and the steering column 4 is compressed. As it absorbs the impact force.

As described above, the steering apparatus of the vehicle of the present invention is provided by dividing a steering shaft into a first steering shaft and a second steering shaft, and filling oil in a coupling portion of the first and second steering shafts. It is useful to absorb the vibration and shock of the vehicle caused by the irregular road condition while driving the vehicle to improve the safety during steering and driving, and to protect the driver by absorbing the impact force generated during the collision of the vehicle.

Claims (2)

In the steering device of a car, The steering shaft 20 of the steering apparatus is divided into a first steering shaft 22 inserted into the steering column 4 and a second steering shaft 28 in which a hollow part 30 is integrally formed at one end thereof, A spline 26 is formed on an outer circumferential surface of one end of the first steering shaft 22, and a spline 26 of the first steering shaft 22 is formed on one side of the inner circumferential surface of the hollow portion 30 of the second steering shaft 28. The corresponding spline (32) is formed, the inside of the hollow portion 30 is filled with oil (70), the steering device of the vehicle, characterized in that to form a steering shaft (20) to absorb vibration and shock. The method of claim 1, The steering shaft 20 is provided with a gas spring 50 to mitigate vibration and impact force, one end of the gas spring 50 is fixed to one side of the outer peripheral surface of the second steering shaft 28, the other end of the steering Steering device for a vehicle, characterized in that rotatably provided on the outer peripheral surface of the column (4).