KR100241712B1 - Steering Wheel Shock Absorber - Google Patents

Abstract

The present invention relates to a shock absorber of the steering wheel, the ring portion and the boss portion that the driver's body is mainly hit by the collision or collision accident during driving of the vehicle to absorb the shock while the appropriate deformation can effectively reduce the driver's injury It is an object of the present invention to provide a shock absorber of the steering wheel.

The present invention for achieving the above object is provided with a boss portion coupled with a steering shaft and a circular ring portion and spokes connecting the ring portion and the boss portion, wherein the ring portion is formed of a pipe and a first ring portion, It is provided with a second ring part made of aluminum die casting on the pipe while being integrally connected to the first ring part, and a third ring part made of aluminum die casting on the solid rod while being integrally connected to the second ring part, and the boss part is subjected to an impact. Friction buffering means (7, 8, 9) for generating a ground friction force to cushion the shock is provided.

Accordingly, when the body of the driver hits the steering wheel, the shock is absorbed by the appropriate deformation of the ring part and the friction of the boss part to reduce the injury of the driver.

Description

Steering Wheel Shock Absorber

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering wheel of a vehicle. In particular, when the driver's head or chest collides with the steering wheel due to a collision or collision while driving the vehicle, the steering wheel is properly deformed to absorb the shock and thereby injure the driver's injury. It relates to a shock absorber of the steering wheel which can be alleviated.

In general, a steering device of a vehicle is a device for steering in order to arbitrarily change the direction of movement of a vehicle. An operation consisting of a steering wheel, a steering shaft, a column, and the like for a driver to directly steer and transfer the operating force to a steering gear and a link. The gear and the gear unit for reducing the rotation of the steering shaft to increase the operating force and at the same time changing the direction of movement of the operating mechanism to the link mechanism, and to transmit the operation of the gear mechanism to the front wheels and to correctly support the relation positions of the left and right wheels. It consists of a link mechanism consisting of a pitman arm, a drag link, a knuckle arm and a tie rod.

In addition, the steering shaft is provided with a shock absorber to reduce the injury of the driver by appropriately absorbing the shock when the upper body of the driver hits the steering wheel in the event of a collision of the car, such a shock absorber is made of steel The inner shaft has a double shaft structure in which the inner shaft is fitted into the outer shaft, and the inner shaft is again integrally coupled to the second inner shaft by welding or the like, and the tip portion of the first inner shaft coupled to the second inner shaft has a reduced diameter. As a corrugated pipe is formed, anticorrosive agent is injected between the corrugated pipe and the outer shaft to prevent malfunction due to rust. When a collision accident occurs while driving the car, the upper body of the driver hits the steering wheel. The corrugated pipe is folded due to the shock to absorb the shock to reduce the injury of the driver.

1 shows the conventional steering wheel as described above, that is, the boss part 12 and the circular ring part 13 and the ring part 13 and the boss part (12) to which the steering wheel 11 is coupled to the steering shaft. 12 is made of spokes 14, and the ring portion 13 is formed of a pipe or a solid shaft while the spokes 14 are made of a solid shaft.

However, since the steering wheel is operated by a driver by hand, the steering wheel must maintain proper rigidity, and the ring part is made of a pipe or a solid shaft, and the spoke is formed of a solid shaft. As the spokes are made of solid shafts or pipes, the weight of the steering wheel becomes heavier, which increases the driver's fatigue.

In addition, if the driver's body hits the steering wheel directly due to a collision or collision while driving, the shock absorber due to proper deformation does not occur in the conventional ring part or spoke, causing serious injury to the driver.

Accordingly, the present invention has been made to solve the above-mentioned drawbacks, and the ring and boss portion that the driver's body is mainly hit by the collision or collision accident during driving of the vehicle absorbs the shock while causing an appropriate deformation to effectively injure the driver's injury. Its purpose is to provide a shock absorber that can be alleviated.

1 is a front view of a steering wheel according to the prior art,

2 is a front view of a steering wheel according to the present invention.

3 is a cross-sectional view taken along the line D-D of FIG.

4 is a cross-sectional view of the steering wheel boss portion according to the present invention.

* Explanation of symbols for main parts of the drawings

1: steering wheel 2: boss

3: ring part 4: spoke

5: steering shaft 6: pivot

7: first tube 8: second tube

9: ball

The present invention for achieving the above object is provided with a boss ring and a circular ring portion coupled to the steering shaft and spokes connecting the ring portion and the boss portion, wherein the ring portion is formed of a pipe and a first ring portion, It is provided with a second ring part made of aluminum die casting on the pipe while being integrally connected to the first ring part, and a third ring part made of aluminum die casting on the solid rod while being integrally connected to the second ring part, and the boss part is subjected to an impact. It is characterized in that the friction buffer means for generating a ground friction force to cushion the impact.

According to a preferred embodiment of the present invention, the friction damping means is a first tube inclined inwardly mounted on the lower end of the extension flange, and a second tube inclined in the outward direction on the opposite surface of the fastening portion facing the tube And, the front end portion of the first tube is inserted into the second tube has a structure having a ball interposed therebetween.

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

2 is a front view of a steering wheel according to the present invention, FIG. 3 is a sectional view taken along the line DD of FIG. 2, and FIG. 4 is a cross-sectional view of the steering wheel boss part according to the present invention, that is, the steering wheel 1 is coupled to a steering shaft. It consists of a boss portion (2) and a circular ring portion (3) and spokes (4) connecting the ring portion (3) and the boss portion (2), and the lower portion of the ring portion of the ring portion (3) is made of aluminum die casting. It consists of the 1st shaft part 3a and the solid shaft 3b inserted in this 1st shaft part 3a in order to complement rigidity.

Here, as shown in detail in FIG. 2, the ring part includes a first ring part 3a (A part) formed of a pipe, and a second ring part 3b made of aluminum die casting on the pipe while being integrally connected to the first ring part; B part) and a third ring part (3c; C part) made of aluminum die casting on a solid rod as shown in detail in FIG. 3 while being integrally connected with the second ring part.

And the boss portion (2) is formed as extending in the horizontal direction from the upper end of the fastening portion (2a) to which the steering shaft (5) is fitted and fastened, as shown in detail in FIG. It consists of an extension flange (2b) that is rotatably fastened by a medium.

In addition, between the extension flange and the fastening portion of the boss portion is provided with a friction buffer means for alleviating the impact by generating a friction force when the extension flange is rotated around the pivot bar, that is, 2 at the lower end of the extension flange Two first tubes 7 are inclined toward the steering shaft, and two second tubes 8 are inclined in the outward direction on the opposite surface of the fastening portion facing the tube 7, and the first tube The distal end portion is inserted into the second tube while the ball 9 is interposed therebetween.

The steering wheel according to the present invention configured as described above, when the driver's body hits the steering wheel due to a collision or collision during the high-speed driving of the car, the ring part is properly deformed and absorbs the shock primarily, and the boss part As the extension flange rotates around the pivot, the shock is secondarily absorbed by the friction force generated between the first tube and the second tube, thereby effectively reducing the driver's injury.

In addition, while maintaining the rigidity enough to be operated by the driver by hand, the overall weight is light, thereby reducing the driver's fatigue.

As described above, according to the shock absorber of the steering wheel according to the present invention, if the driver's body directly hits the steering wheel during a collision or collision accident while driving the vehicle, the shock is affected by the appropriate deformation of the ring part and the friction force generated by the boss part. Not only can it effectively reduce the injuries of the driver by absorbing it, but it is also light in weight, which reduces the driver's fatigue and maintains sufficient rigidity.

Claims (3)

A steering wheel comprising a boss portion coupled with a steering shaft and a circular ring portion and spokes connecting the ring portion and the boss portion, wherein the ring portion includes a first ring portion formed of a pipe, and the pipe is connected to the first ring portion and is made of aluminum. And a second ring part made of die casting, and a third ring part made of aluminum die casting on a solid rod, which is integrally connected with the second ring part, and a friction buffer that cushions the shock by generating friction force when the boss part is applied to the boss part. Steering wheel shock absorber, characterized in that the means is installed. The steering wheel according to claim 1, wherein the boss comprises a fastening part to which a steering shaft is fitted and fastened, and an extension flange formed to extend in a horizontal direction from an upper end of the fastening part so as to be pivotable via a pivot. Shock absorber. 3. The method of claim 2, wherein the friction damping means is a first tube inclined inwardly mounted on the lower end of the extension flange, a second tube inclined in a direction outwardly on the opposite surface of the fastening portion facing the tube, and The front end portion of the first tube is inserted into the second tube and the steering wheel buffer, characterized in that it has a ball interposed between them.