JP2000072002A - Steering column holding structure - Google Patents

Abstract

(57) [PROBLEMS] To prevent a sudden forward movement of a steering column due to an inertial force at the time of a collision without largely modifying a conventional general steering holding structure, and to prevent a sudden forward movement of the steering column. Was used as a lock and lock release stopper member. A curling plate (12) for extending and absorbing forward movement energy of the column shaft (1) is fixedly provided on a side surface of a column bracket (4), and a lock bolt (6) is provided on the curling plate (12).
And a lever 7 attached to the lock bolt 6 is provided with a locking stopper claw 15 and an unlocking stopper claw 16 which come into contact with the curling plate 12 when locking and unlocking.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering column holding structure in which a steering column can be adjusted in the front-rear and up-down directions.

[0002]

2. Description of the Related Art As shown in FIG. 6, a conventional general holding structure for a steering column has a holding member 2 having an elongated hole 3 in a vertical direction fixed to a column shaft 1, and both side surfaces of the holding member 2 in the front-rear direction. Column bracket 4 with long holes 5
As shown in FIG.
The holding member 2 is tightened and loosened to the column bracket 4 by the lock bolt 6 by the lever 7 shown in FIG.

[0003]

It is necessary from the safety point of view to prevent a sudden forward movement of a steering column at the time of a collision of a vehicle and to enlarge a space between a steering wheel and a driver. It is difficult to achieve the purpose with a general steering holding structure. Further, as shown in FIG. 7, a stopper structure at a predetermined rotation position of a lever 7 for locking and unlocking the steering column 1 is a ring-shaped stopper member 8 having a stopper piece 9 protruding therefrom.
Is provided on the column bracket 4 so as to be prevented from rotating, and the lever 7 is provided with a locking stopper claw 10 and an unlocking stopper claw 11 that abut on the stopper piece 9. Needed.

An object of the present invention is to prevent a sudden forward movement of a steering column due to an inertial force at the time of a collision without largely modifying a conventional steering holding structure, and to prevent a sudden forward movement of the steering column. Are used together as lock and lock release stopper members.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a column bracket which is mounted so as to be able to move back and forth and up and down through a lock bolt and holds a column shaft; And a lever for locking and unlocking the column shaft by tightening and loosening the column shaft to the column bracket, and a steering column holding structure capable of adjusting the column shaft in front and rear and up and down directions. A curling plate that extends and absorbs the forward movement energy of the column shaft is fixedly inserted through the lock bolt, and a locking stopper claw that contacts the curling plate when the lever is locked and unlocked, and a lock releasing claw. A stopper claw is provided and the curling plate is It is characterized in that in combination as a locking and unlocking the stopper member of the serial lever.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a column shaft, and a holding member 2 having an elongated hole 3 in a vertical direction.
Has been fixed. Reference numeral 4 denotes a column bracket, which has a long hole 5 in the front-rear direction, sandwiches both side surfaces of the holding member 2,
The holding member 2 is tightened and loosened to the column bracket 4 by the lock bolt 6 with the lever 7 through the lock bolt 6 through the elongated holes 5 and 3 to lock and unlock.

According to the present invention, a curling plate 12 for extending and absorbing the forward moving energy of the column shaft 1 on the side surface of the column bracket 4 is provided.
Is fixed through the lock bolt 6 and the lever 7
The locking stopper claw 15 and the unlocking stopper claw 16 which come into contact with the curling plate 12 at the time of locking and unlocking are provided.

As shown in FIGS. 2 and 3, the curling plate 12 is formed with a locking stopper piece 13 with which the locking stopper claw 15 comes in contact. The lower surface of the curling plate 12 is used as a lock release stopper surface 14.

Since the present invention has the above structure, when a forward impact load is applied to the column shaft 1 due to a collision or the like, the lock bolt 6 extends the curling plate 12 forward, and the metal ductility of the curling plate 12 is increased. Thus, the forward movement energy of the column shaft 1 is absorbed to prevent the abrupt forward movement of the steering column, and the space between the steering wheel and the driver is enlarged.

In order to release the lock of the column shaft 1 by the lever 7, when the lever 7 is rotated in the direction of the release arrow in FIG. 1, the unlocking stopper pawl 16 locks the lower surface of the curling plate 12 as shown in FIG. The lock bolt 6 contacts the release stopper surface 14 and the column bracket 4
Loosen the holding member 2 by the column shaft 1
, Front and rear and vertical movement adjustment.

The lock release of the column shaft 1 by the lever 7 is performed by rotating the lever 7 in the direction of the lock arrow in FIG. 1 as shown in FIG. Stopper piece 1
3, the lock bolt 6 is locked by tightening the holding member 2 by the column bracket 4.

As described above, according to the present invention, the advancing movement of the steering column caused by the curling plate 12 is prevented, and the curling plate 12 is used as a lock and unlock stopper member for the lever 7.
In this case, the conventional stopper member 8 as a separate part is eliminated to reduce the number of parts.

[0013]

As described above, according to the present invention, the abrupt forward movement of the steering column due to a collision or the like is absorbed by the metal ductility of the curling plate to absorb the forward movement energy without modifying the basic structure of the conventional general steering holding structure. The use of this curling plate as a lever locking and unlocking stopper member eliminates the need for a dedicated stopper member as a separate part, and has the advantage of reducing the number of parts.

[Brief description of the drawings]

FIG. 1 is a perspective view of the structure of the present invention.

FIG. 2 is a side view of a curling plate.

FIG. 3 is a plan view of a curling plate.

FIG. 4 is a side view when the lock is released.

FIG. 5 is a side view when locked.

FIG. 6 is a perspective view of a conventional structure.

FIG. 7 is a perspective view showing a conventional lever stopper structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Column shaft 2 Holding member 3 Long hole in the up-down direction 4 Column bracket 5 Long hole in the front-rear direction 6 Lock bolt 7 Lever 12 Scaring plate 13 Lock stopper piece 14 Lock release stopper surface 15 Lock stopper claw 16 Lock release Stopper claw

Claims (1)

[Claims] 1. A column bracket which is mounted movably in the front-rear and up-down directions through a lock bolt to hold a column shaft, and wherein the column shaft attached to the lock bolt is tightened and loosened by the column bracket to lock and release. A steering column holding structure that includes a lever for unlocking and that can adjust the column shaft in front and rear and up and down directions, wherein a curling plate that extends and absorbs forward movement energy of the column shaft is provided on a side surface of the column bracket. A lock bolt is penetrated and fixed, and a locking stopper claw and an unlocking stopper claw that come into contact with the curling plate when locking and unlocking the lever are provided, and the curling plate is locked and unlocked with the lever. Used as a stopper member A steering holding structure characterized by: