KR20030037418A - Shock absorbing device of steering column for vehicle - Google Patents

Abstract

PURPOSE: A shock absorber of a steering column for a vehicle is provided to manufacture and mount the shock absorber conveniently, and to cut down expenses by modifying the installation structure of a mounting bracket and a bending plate. CONSTITUTION: A shock absorbing device for a steering column is composed of an outer tube(110) contracted axially in receiving impact; an inner tube(120) inserted to the outer tube; a mounting bracket(150) interlocking with the outer tube and facing to a vehicle body largely by an expansion plate(151); a capsule(160) separated from the mounting bracket and fixed in the vehicle body; a slit formed at the side of the expansion plate; and a bending plate(170) fixed in the capsule, placed near the end by bending the other end, and fitted to the slit by rounding the intermediate portion. The shock absorbing device is installed and manufactured easily, and cost is reduced by modifying the installation structure of the mounting bracket and the bending plate.

Description

Shock Absorber of Vehicle Steering Column {SHOCK ABSORBING DEVICE OF STEERING COLUMN FOR VEHICLE}

The present invention relates to a shock absorbing device of a steering column for a vehicle, and more particularly, to a shock absorbing device of a steering column for a vehicle, which is easy to manufacture and install by reducing the mutual installation structure of the mounting bracket and the bending plate of the steering column and reducing the production cost. It is about.

In general, the steering column is divided into upper and lower sides so as to be able to contract when the vehicle collides, and thus the energy of the impact is gradually absorbed by the impact of the collision between the driver and the steering wheel installed in the driver's seat, thereby preventing safety accidents. Absorption function is provided.

That is, the steering column is formed to be separated into upper and lower sides, and they are installed by inserting them into each other, and in order to maintain the inserted state, the cross section of the coupling part is deformed, or a separate member is used in between to normally be assembled. While supporting, when the external shock is transmitted, the length is reduced in the axial direction to cushion the function.

1 and 2 show such a conventional steering column.

As shown therein, the steering column 10 has a hollow outer tube 20 disposed on the steering wheel side of the vehicle and has a smaller diameter so that a part can be inserted into the lower end side of the outer tube 20. It is provided with a hollow inner tube 30 formed on the gearbox side.

In addition, the steering shaft 40 may transmit the rotational force between the steering wheel (not shown) disposed in front of the driver's seat and the gearbox connected to the wheel of the vehicle, and may contract in the axial direction. ) Is provided.

In addition, a lower bracket 50 is installed outside the inner tube 30 so as to fix the steering column 10 to the vehicle body, and the lower bracket 50 is fixed to the vehicle body in close contact with the lower surface. The mounting bracket 60, which is provided similarly to the lower bracket 50, is installed outside the 20.

On the other hand, as shown in Figure 2, the mounting bracket 60 is rounded so that the middle side of the outer tube 20 can be wrapped around the extension plate 61 on both sides extending to the wide so as to face the body The expansion plate 61 is provided with a slot 63 opening to the inner tube 30 side.

In addition, the capsule 70 is inserted into the slot 63 to be detachable from the mounting bracket 60, the capsule 70 is passed through the center side of the vehicle body by a capsule screw 71 fixed to the vehicle body Fixed to the mounting bracket 60 by a molding pin (not shown) penetrating the outer circumferential side, and the mounting bracket 60 absorbs the shock while the steering column 10 absorbs the shock by the friction force of the capsule when an external shock occurs. Is separated from.

On the other hand, between the capsule 70 and the mounting bracket 60, which are separated during external shock transmission, a bending plate of approximately "C" shape bent to gradually absorb the secondary shock transmitted to the steering column 10 is formed. 80 is provided.

The bending plate 80 has one end tightly fixed to the capsule 70 by a capsule screw 71 for fixing the capsule 70 to the vehicle body, and the other end extending therefrom is riveted to the bottom surface of the expansion plate 61. 81), the middle end is provided in a shape extending from the one end and the other end to the inner tube 30 side, but is provided to facilitate the unfolding when the impact occurs.

At the left and right ends of the expansion plate 61, guide plates 62 are formed to be bent to form a “U” to gradually unfold the bending plate 80.

That is, the guide plate 62 has a "c" shape when the molding pin of the capsule 70 is broken due to the collision of the vehicle and the outer tube 20 and the mounting bracket 60 connected thereto move toward the inner tube 30. The formed bending plate 80 is guided to gradually unfold.

However, the conventional shock absorbing device of the steering column is a closed structure for guiding this for smooth operation of the bending plate, which is not only expensive to bend the mounting bracket into a “U” shape, but also has a complicated shape of the bending plate. It is made of a structure that is riveting to the mounting bracket, the production and installation is inconvenient and there was a problem that the production cost is high.

The present invention is to solve such a conventional problem, the object is to improve the mutual mounting structure of the mounting bracket and the bending plate, to provide a shock absorbing device of the steering column is easy to manufacture and install, reducing the production cost will be.

1 is a side view showing a conventional steering column.

2 is a bottom perspective view showing a conventional steering column.

3 is a side view showing a steering column according to the present invention.

Figure 4 is a bottom perspective view showing a steering column according to the present invention.

<Explanation of symbols for main parts of drawing>

100: steering column 110: outer tube

120: inner tube 130: steering shaft

140: Lower bracket 150: Mounting bracket

151: extension 160: capsule

161: capsule screw 170: bending plate

180: Slot

The shock absorbing device of the steering column for a vehicle of the present invention for achieving the above object, the outer tube is inserted and installed on the outside of the inner tube so as to be able to contract in the axial direction during external shock transmission, so that the outer tube can be interlocked with In the shock absorbing device of the steering column for a vehicle having a mounting bracket which is installed on the outer side and an expansion plate is provided on both sides so as to face the vehicle body wide, and a capsule fixed to the vehicle body so as to be detachable from the mounting bracket, The slits are formed long incision on one side of the expansion plate, and one end is fixed to the capsule and the other end is bent and positioned adjacent to one end, and the middle end is largely rounded compared to the slit, and the bending plate is provided to extend over one side of the slit. It is characterized by.

Hereinafter, with reference to the accompanying drawings will be described the configuration and effect of the shock absorbing device of the steering column for a vehicle according to the present invention.

3 and 4 are views showing a steering column for a vehicle according to the present invention.

As shown therein, the steering column 100 is provided with an outer tube 110 and an inner tube 120 which is partially inserted into the lower end side of the outer tube 110, and the steering column 100 is provided. The inside of the steering shaft 130 is installed to be capable of contraction in the axial direction while transmitting a rotational force.

In addition, a lower bracket 140 is installed on the outside of the inner tube 120 and the surfaces extending to both sides are fixed to the vehicle body, and a mounting similar to the lower bracket 140 is provided on the outside of the outer tube 110. The bracket 150 is provided.

The mounting bracket 150 is rounded so that its middle side can surround the outer tube 110, and both sides extending therefrom are provided with an extension plate 151 so as to face the vehicle body widely. A slot 152 that is open toward the inner tube 120 is provided.

On the other hand, the capsule 160 is inserted into the slot 152, the capsule 160 is fixed to the vehicle body by a capsule screw 161 is fixed to the vehicle body through the center side, and penetrates the outer peripheral side It is fixed to the mounting bracket 150 by a molding pin (not shown), and is separated from the mounting bracket 150 that is moved to the inner tube 120 side when the external shock is transmitted.

In addition, the left and right ends of the mounting bracket 150 further extend the expansion plate 151 to bend to form a "b" shape to form a slit 180 in the middle portion thereof.

In addition, between the capsule 160 and the mounting bracket 150, which are separated during a collision of the vehicle, a bending plate having an approximately "L" shape bent to gradually absorb the secondary shock transmitted to the steering column 100 ( 170) is provided.

The bending plate 170 has one end tightly fixed to the lower surface of the capsule 160 by the capsule screw 161 which fixes the capsule 160 to the vehicle body, and extends the end thereof extending toward the inner tube 120. By passing through the ribs 180 formed in the mounting bracket 150 to be passed back to the outer tube 110 toward the capsule 160 to reach the capsule 160, it is provided in a "L" shape.

That is, the bending plate 170, one end is tightly fixed to the lower surface of the capsule 160, the other end is bent and positioned so as to be adjacent to one end and the middle end is larger than the slit 180 so as to be spread over one side of the outside It is fitted.

In addition, the shock absorbing device of the vehicle steering column of the present invention configured as described above, when the impact of the vehicle is transmitted to the outer tube 110, the mounting bracket 150 is connected to the outer tube 110 and the capsule 160 Breaking the molding pin installed in between and moves to the inner tube 120 side.

At the same time, the other end side of the bending plate 170 inserted into the slit 180 formed in the mounting bracket 150 and the expansion plate 151 moved toward the inner tube 120 and overlapped with the "L" shape and protruded toward the inner tube by a predetermined length. By gradually sliding while overlapping the overlaps, the impact energy is gradually absorbed.

As described in detail above, the shock absorbing device of the steering column of the present invention, the guide structure of the mounting bracket is simplified and the bending plate does not need fixing means such as riveting, the production and installation is easy and the advantage of reducing the production cost There is this.

Claims (1)

An outer tube that is inserted into and installed on the outside of the inner tube to be able to contract in the axial direction during shock transmission from the outside, and is installed on the outer side so as to be interlocked with the outer tube, and both sides of which are provided with expansion plates so as to face the body wide In the shock absorbing device of the steering column for a vehicle having a mounting bracket and a capsule fixed to the vehicle body so as to be detachable from the mounting bracket, The slits are formed long cut in one side of the expansion plate, and one end is fixed to the capsule and the other end is bent and positioned to be adjacent to one end, the middle end is large rounded compared to the slit is provided with a bending plate to extend over one side of the slit Impact absorbing device of the steering column for a vehicle, characterized in that.