KR19980061275A - Dampening structure of the steering wheel - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering wheel of a vehicle, and in particular, when the driver's head or chest hits the steering wheel due to a collision or collision while driving, the spokes of the steering wheel are appropriately deformed to absorb shocks. It's about structure.

According to the present invention, a hub 12 coupled to a steering shaft, a plurality of spokes 14 extending to the outside of the hub 12 and formed into a bar shape and coupled to an end of the spoke 4 are formed in a circular shape. In the steering wheel composed of the rims 13, the spokes 14 are inserted into the outer column 15 having the cavity 17 formed in the longitudinal direction at the distal end thereof, and the cavity 17 of the outer column 15. A through hole is formed at the front end in the transverse direction, and a compression spring 19 is installed inside the through hole, and both ends of the compression spring 19 are provided with an inner column 16 and an outer column 15. By constructing a spring 18 that is received in the cavity 17 of the c) and placed by the inner column 16, the spokes absorb the impact when the driver hits the steering wheel 11, thereby reducing the driver's injury. It is possible to provide a buffer structure of the steering wheel.

Description

Dampening structure of the steering wheel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering wheel of an automobile, and more particularly, to a shock absorbing structure of a steering wheel that absorbs an impact by appropriate deformation of a spoke when a driver's head or chest hits the steering wheel due to a collision or collision accident while driving. will be.

In general, a steering device of a vehicle is a device for steering in order to arbitrarily change the driving direction of the vehicle, and the driver consists of steering handles, steering shafts, columns, etc. in order to transmit the steering force to steering gears and links. The gear and the gear unit to reduce the rotation of the steering shaft to increase the operating force and to change the direction of movement of the operation mechanism to the link mechanism, and to transfer 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 impact when the upper body of the driver hits the steering wheel in the 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 in which the first inner shaft is 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.

Meanwhile, FIG. 1 shows the conventional steering wheel as described above, that is, the hub 12 and the circular rim 13 and the rim 13 and the hub 12 to which the steering wheel 11 is coupled to the steering shaft. It is made of spokes (14) connecting the rim 13, the rim 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 the driver, the steering wheel needs to maintain proper rigidity, so that the rim is made of a pipe or a solid shaft, and the spoke is formed of a solid shaft. If the driver's body hits the steering wheel directly due to a collision or collision while driving the vehicle, the shock absorber is not deformed at all due to proper deformation in the conventional limbs or spokes. Causes injury.

Accordingly, the present invention has been made to solve the above-described drawbacks, the lower part of the rim and the spoke that the driver's body is mainly hit by the collision or collision accident during driving of the car absorbs the shock while causing the appropriate deformation and injury of the driver The purpose is to provide a buffer structure of the steering wheel formed to effectively reduce the.

1 is a plan view showing a general steering wheel.

Figure 2 is a longitudinal sectional view showing the spokes constituting the steering wheel of the present invention.

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

* Description of the symbols for the main parts of the drawings *

12 Hub 13: Rim

14: spoke 15: outer column

16: inner column 17: cavity

18,19: compression spring 20: ball

In order to achieve the above object, the present invention is a steering wheel consisting of a hub coupled to the steering shaft, a plurality of spokes extending to the outside of the hub in the form of a bar, and a rim formed in combination with the spokes, The spoke is inserted into the outer column having a cavity in the longitudinal direction at the distal end, and inserted into the cavity of the outer column. A through hole is formed at the distal end in the transverse direction, and a compression spring is installed inside the through hole, and balls are installed at both ends of the compression spring. It is provided with a buffer structure of the steering wheel, characterized in that consisting of the inner column and the spring is accommodated in the cavity of the outer column is interposed by the inner column.

Hereinafter, the configuration of the buffer structure of the steering wheel according to the present invention with reference to the accompanying drawings in detail as follows.

Figure 2 is a longitudinal cross-sectional view of the spoke constituting the steering wheel of the present invention, Figure 3 is a cross-sectional view taken along the line A-A of FIG. As shown, the spokes constituting the steering wheel of the present invention are not integrally formed as in the prior art, but are divided into the outer column 15 and the inner column 16.

The outer column 15 is coupled to the rim 11 side, the cavity 17 is formed in the longitudinal direction at the front end of the outer column 15. The cavity 17 is provided with an inner column 16 via the compression spring 18.

The inner column 16 is coupled to the hub 12 side, the opening is formed in the transverse direction at the front end of the inner column 16. In addition, a spring 19 is installed in the through hole, and balls 20 are installed at both sides of the spring 19. Thus, when the inner column 16 is installed in the cavity 17 of the outer column 15, the spring 19 installed in the inner column 16 pushes the ball 20 outward and the inner column 16 Maintain a connection between the outer column and the outer column 15.

Thus, the operation of the shock absorbing structure of the steering wheel of the present invention configured as follows.

When a collision or a collision occurs while driving a vehicle, the driver collides with the chest or the head by the inertia force on the steering wheel 11. At this time, when the collision direction of the chest or the head portion coincides with the radial direction of the steering wheel, the outer column 15 is pushed toward the inner column 16 side. The compression spring 18 interposed in the inner column 16 and the outer column 15 is contracted while absorbing the impact.

Accordingly, the present invention is coupled to the hub 12, the plurality of spokes 14 formed in the bar shape extending to the outside of the hub 12, and coupled to the end of the spoke 14 in a circular shape In the steering wheel composed of a rim 13 formed, the spokes 14 have an outer column 15 having a cavity 17 formed in a longitudinal direction at a distal end thereof, and a cavity 17 of the outer column 15. The inner column 16 is inserted and the front end is formed in the transverse direction and the compression spring 19 is installed inside the through hole and the ball 20 is installed at both ends of the compression spring 19, and the outer column By constructing a spring 18 that is received in the cavity 17 of 15 and placed by the inner column 16, the spoke absorbs an impact when the driver hits the steering wheel 11, thereby preventing injury to the driver. It is possible to provide a shock absorbing structure of the steering wheel that can be reduced.

Although specific embodiments of the present invention have been described in detail above, the present invention is not limited thereto, and various changes and modifications may be made by those skilled in the art based on the technical spirit of the present invention.

Claims (1)

In the steering wheel composed of a hub coupled to the steering shaft, a plurality of spokes extending to the outside of the hub in the form of a bar, and a rim formed in a circular shape coupled to the end of the spoke, The spoke is inserted into the cavity of the outer column, the outer column is formed in the longitudinal column in the longitudinal direction, the through hole is formed in the transverse direction in the front end and the compression spring is installed in the inside of the hole and the ball at both ends of the compression spring Shock absorbing structure of the steering wheel, characterized in that the inner column is installed and the spring is accommodated in the cavity of the outer column is interposed by the inner column.