JPH07117685A - Steering device for vehicle - Google Patents

Abstract

PURPOSE:To suppress the movement of a column jacket due to the impact load which overwhelms the frictional force of the tightening bolt of a tilt/ telescopic steering device which is adjusted by the frictional force. CONSTITUTION:Lock plates 32 and 34 having the positioning members 31 and 33 and tooth parts 32c and 34c are fitted on a tightening bolt 29, and the positioning member 31 is arranged in the vicinity of a slot hole 27b for telescope, and the positioning member 33 is arranged in the vicinity of a slot hole 4b for tilt, and the positioning members 31 and 33 and the lock plates 32 and 34 are fixed integrally. A reinforcing plate 28 having the tooth parts 28a and 16a opposed to the tooth parts 32c and 34c is fixed on a distance bracket 27 in the vicinity of the slot hole for telescope, and the lock plate 16 is fixed with an upper bracket 4 in the vicinity of the slot hole 27b for tilt, and each shift in the axial and vertical directions of a column jacket 22 is suppressed by the mutual meshing of the opposed tooth parts 16a, 34c, 32c, and 28a in the collision of a vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle steering system having a tilt / telescopic mechanism, and more particularly, the entire steering system can be moved horizontally in order to effectively absorb the impact of an occupant in a vehicle collision. It is configured in.

[0002]

2. Description of the Related Art In order to prevent a secondary collision accident of a driving occupant due to a frontal collision accident of an automobile, when a passenger collides with a steering wheel, a steering column contracts to absorb impact energy, and a steering wheel is provided at the time of a frontal collision. The airbag built into the wheel is inflated, and the occupant collides with it and absorbs the impact energy.

By the way, in the event of a vehicle collision, it is customary for a driving occupant seated in a seat to move substantially horizontally toward the front side of the vehicle body. Then, the steering column is usually
Since the front panel that separates the front part of the vehicle body from the passenger compartment is arranged obliquely upward, it has an angle that intersects diagonally with the chest of the driver. When moving horizontally to the front side, the load is not input only in the axial direction of the steering column, but
Generates a horizontal component force. Therefore, it has been proposed that the contraction of the steering column may cause a twisting phenomenon to affect the desired energy absorption effect.

Therefore, a bellows-shaped or flexible energy absorber is interposed between the steering column and the front panel or dashboard in order to reduce the component force applied to the steering column in the horizontal direction at the time of a secondary collision. The inventions thus provided are provided (see, for example, Japanese Utility Model Publication No. 60-81069 and Japanese Utility Model Publication No. 62-155067).

Recently, however, the steering column is tilted so that the steering wheel can be vertically tilted at a desired angle so as to ensure the optimum driving posture of the occupant, and the steering wheel moves back and forth with respect to the occupant. Often employs an adjustable telescopic structure. In this case, there is a friction type for adjusting the tilt or telescopic (hereinafter abbreviated as telescopic).

In the friction type, a distance bracket fixed to a column jacket by welding or the like is slidably sandwiched by an upper bracket fixed to the vehicle body, and a long hole parallel to the steering column is formed in the distance bracket and the upper bracket is also provided. A vertical slot in the
The upper bracket is arranged so as to be tightly tightened to the distance bracket with a tightening bolt penetrating these elongated holes. One end of the tightening bolt slidably engages with a long hole on one side of the upper bracket through a rotation stop member,
The other end is slidably engaged with a long hole on the other side of the upper bracket through a tightening member, and an operation lever is integrally fixed to a nut that engages with a screw portion of a tightening bolt. .

Therefore, when the operating lever is rotated in the tightening direction, the nut tightens the tightening member around the elongated hole to the upper bracket, and the upper bracket tightens the desired tilt angle and the desired tilt angle set by the frictional force that tightens the distance bracket. It is to hold the telescopic position.

[0008]

However, in the tilt-telescopic structure adopting the friction type, when the impact load of the occupant at the time of the secondary collision is input, a load larger than the frictional force generated by the tightening bolt is applied. In such a case, the tightening bolt may slide in the elongated hole, which may interfere with the energy absorbing structure of the steering column which is set to be contractible in the axial direction, and may adversely affect the intended effect.

Therefore, the present invention provides a vehicle steering system in which the energy absorption structure at the time of a secondary collision accident in the tilt-telescopic steering column adopting the friction type can be operated without any trouble.

[0010]

According to a first aspect of the present invention, in a vehicle steering system, a steering shaft, which is axially movable in a column jacket, is housed in a distance bracket fixed to the column jacket. A telescopic elongated hole parallel to the axis of the column jacket is provided, a tightening bolt penetrating the telescopic elongated hole is penetrated from one side of the upper bracket, and a tightening member and an operating lever are respectively provided on both sides of the upper bracket. In a telescopic steering device in which a distance bracket can be tightened via a lock plate having a displaceable positioning member and a tooth portion, the tooth is engaged with the tooth portion of the lock plate. The other locking plate that formed the The lock plate is fixed in the vicinity of the long hole, and the lock plate is disposed together with the positioning member at a position facing the other lock plate and separated by the positioning member. The vehicle steering device is characterized in that the tooth portions of the column mesh with each other to prevent axial movement of the column jacket.

According to the second aspect of the present invention, the steering shaft is housed in the column jacket, and the tilt bracket is slidably sandwiched between the upper bracket and the tilt bracket. From the one side of the upper bracket through a tightening bolt that penetrates the distance bracket, and,
In a tilt steering device capable of tightening a distance bracket on both sides of an upper bracket via a tightening member and an operating lever, a displaceable positioning member and a lock plate having a tooth portion are fitted into the tightening bolt. At the same time, another lock plate having a tooth portion that engages with the tooth portion of the lock plate is fixed in the vicinity of the tilting elongated hole of the upper bracket, and the lock plate faces the other lock plate. The columnar member is disposed at a position separated by the positioning member together with the positioning member. When the collision occurs, the positioning member is displaced so that the tooth portions of the both lock plates mesh with each other to prevent the column jacket from moving in the vertical direction. A steering device for a vehicle, characterized in that

According to the present invention, the axially movable steering shaft is housed in the column jacket, and the distance bracket fixed to the column jacket is provided with a telescopic elongated hole parallel to the axis of the column jacket.
An upper bracket that slidably holds the distance bracket is provided with a tilt long hole that overlaps with the telescopic long hole, and a tightening bolt that penetrates the distance bracket from the tilt long hole is penetrated from one side of the upper bracket. In addition, in the tilt / telescopic steering device in which the distance bracket can be tightened on both sides of the upper bracket via the tightening member and the operation lever, two positioning members and tooth portions are formed on the tightening bolt. Two lock plates are fitted, one of the positioning members is arranged in the vicinity of the telescopic long hole, the other of the positioning members is arranged in the tilt long hole, and the positioning member and the lock plate are integrally fixed respectively. And the tooth portion facing the tooth portion of the one lock plate The other lock plate formed to the distance bracket near the telescopic long hole, and the other lock plate having a tooth portion facing the tooth portion of the other lock plate to the upper bracket near the tilt long hole. It is characterized in that they are fixed to each other.

[0013]

[Operation] When an occupant's impact load is input to the steering wheel during a vehicle collision, the impact load is input to the column jacket from the steering shaft axially attached to the steering wheel and tightened via the distance bracket fixed to the column jacket. Move the bolts in the axial and vertical directions of the column jacket.

With respect to the axial movement of the column jacket with respect to the movement of the tightening bolt, the positioning member arranged in the vicinity of the telescopic elongated hole is displaced so that the facing tooth portions of the pair of lock plates mesh with each other. (Claims 1 and 3) Further, with respect to the vertical movement of the column jacket, the positioning member arranged in the tilting long hole is displaced so that the facing tooth portions of the pair of lock plates mesh with each other ( Therefore, the column jacket is prevented from moving in the axial direction or the vertical direction due to an impact load that exceeds the frictional force of the tightening bolt.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a mounting bracket 2 is fixed to a vehicle body 1 such as a dashboard in a horizontal position, and an energy absorbing member 3 is interposed in the mounting bracket so that an upper bracket 4 is horizontally movable. The steering column 5 is attached to the upper bracket 4.
The steering column 5 is supported so as to be tiltable and telescopic, and an axially contractible contractor 6 is connected to the steering column 5, and a lower bracket 7 for receiving a reaction force of the contractor 6 is attached to the vehicle body 1 such as the lower surface of the dashboard. And the contracting body 6 is connected to the steering gear box 9 via the intermediate shaft 8.

As shown in FIG. 2, the mounting bracket 2 is formed of a rectangular U-shaped cross-section having a predetermined length, and a pair of front and rear slide elongated holes 2b are provided on the left and right side wall portions 2a, 2a, respectively. Has been formed. Slide long hole 2b
Has a rear end portion (cabin side) formed thin, and a C-shaped plate 11 is fixed to the end portion by welding or the like. A pair of through holes 2c, 2c for fixing a part of the energy absorbing member 3 are formed on the upper surface of the mounting bracket 2. 2d and 2e are through holes for fixing the mounting bracket 2 to the vehicle body.

As shown in FIG. 2, the energy absorbing member 3 has a pair of cuts 3 formed by separating a single metal plate in the longitudinal direction.
a and 3a are formed in parallel with each other, and the ends thereof are bent in an arc shape downward to form through holes 3b at the positions, and through holes 3c are formed at the rear corners.
By drilling. The energy absorbing member 3 is connected to the mounting bracket 2 with the rivet 12 by aligning the through hole 3c with the through hole 2c, and by matching the through hole 3b with the through hole 4d of the upper bracket 4, a similar rivet not shown. The energy absorbing member 3 is the upper bracket 4
Connected with.

As shown in FIG. 2, the upper bracket 4 is composed of a U-shaped section having left and right side walls 4a, 4a having a low front portion and a high rear portion. A pair of front and rear nuts 13 are fixed to the side wall portion 4a. This nut 13
Is a slide long hole 2b of the mounting bracket 2
Corresponding to the above, the plate 11 is applied so as to sandwich it, and is supported by the mounting bracket 2 by the screw 15 so as to be slidable in the front direction of the vehicle body.

Further, a tilting long hole 4b is formed on the rear side of the side wall portion 4a of the mounting bracket 4, a through hole 4c is formed on the front side thereof, and is parallel to the upper surface of the mounting bracket 2. A through hole 4d is formed in the upper surface portion that becomes. Further, an engaging hole 4e into which the end of the flip-up spring 39 is inserted is formed in the side wall 4a. A lock plate 16 is fixed to the front side of the side wall 4a in the vicinity of the tilting long hole 4b. The lock plate 16 has teeth 16a formed on the side of the tilting long hole 4b. As shown in FIG. 3, a protrusion 16b formed near both ends by embossing has a through hole 4f formed in the side wall 4a. , 4f are inserted and locked.

As shown in FIG. 1, the steering column 5 serves as a steering shaft for rotating the steering wheel 17 and transmitting the rotational torque to the gear box 9 by welding the shaft 18 and the shaft 18 axially attached to the steering wheel 17. The coaxially connected spline tube 19, the spline shaft 20 inserted into the spline tube 19 so as to be movable in the axial direction, the elastic joint 50 integrally connected to the spline shaft 20, the contracting body 6 connected to the elastic joint 50, and It comprises a shaft 21 having a universal joint 51 integrally connected to the contracting body 6, and a column jacket 22 into which the shaft 17, the spline tube 19, and the spline shaft 20 are coaxially inserted. Bearings 22a and 22b are mounted on the upper and lower ends of the column jacket 22, respectively. An intermediate shaft 8 having a bellows 8 a is connected to the universal joint 51, and the intermediate shaft 8 is connected to a steering gear box 9.

Next, as a structure for enabling the telescopic adjustment, as shown in FIG.
Hinge bracket 2 with an inverted U-shaped cross section on the upper surface of the outer periphery
3, the hinge bracket 23 is interposed between the side wall portions 4a of the upper bracket 4. The hinge bracket 23 has a telescopic elongated hole 23a parallel to the column jacket 22 formed in a pair of left and right side wall portions 23b, and a hinge bolt 24 is inserted into the telescopic elongated hole 23a.

The hinge bolt 24, as shown in FIG.
Through hole 4c formed in side wall 4a of upper bracket 4
Is movably passed through in the longitudinal direction, and is fastened with a nut 24a with a washer or the like interposed outside the side wall portion 4a having the other through hole 4c. The hinge bolt 2
A pair of stoppers 25 and a ring 26 are inserted in 4 and the rectangular projections 25a formed on the stoppers 25 are fitted into the telescopic elongated holes 23a and 23a, respectively. Therefore,
The front portion of the steering column 5 is supported by the upper bracket 4 so as to be movable in the front-rear direction.

On the other hand, in order to support the rear portion of the steering column 5 so as to be movable in the front-rear direction with respect to the upper bracket 4 and vertically movable, the upper surface of the distance bracket 27 is provided on the lower surface of the outer peripheral portion of the column jacket 22. Are fixed by welding or the like, and the distance bracket 27 is sandwiched between the side wall portions 4a of the upper bracket 4. As shown in FIG. 2, the distance bracket 27 has a U-shaped cross section having a predetermined length, and the left and right side walls 27a and 27a have column jackets 22 respectively.
Telescopic elongated holes 27b, 27b are formed in parallel with the axis line.

A reinforcing plate 28 as a lock plate is connected between the left and right side wall portions 27a, 27a by welding or the like in parallel with the axis of the column jacket 22. A tooth portion 28a is formed on the upper surface of the reinforcing plate 28 in parallel with the side wall portion 27a and close to one side wall portion 27a. The tooth portion 28a may be formed by embossing one sheet metal. The distance bracket 27 is supported by the upper bracket 4 via a tightening bolt 29.

As shown in FIG. 2, the tightening bolt 29 has a threaded portion 29a at one end and a rotation stopper ring 29 near the other end.
b is a bolt of a predetermined length integrally formed, and a serration 29c is engraved on the outer peripheral surface of the rotation stop ring 29b.
Serration 30d engaging with this serration 29c
The anti-rotation member 30 as a fastening member having a through hole 30b formed on the inner peripheral surface thereof is fitted into the anti-rotation ring 29b.

The anti-rotation member 30 is a resin member that engages with the tilting long hole 4b of the upper bracket 4 so as to be vertically movable, and slides on the tilting long hole 4b as shown in FIGS. Square protrusion 30a and tightening bolt 29 that contact
Has a through hole 30b penetrating therethrough, a serration 30d is formed on the inner peripheral surface of the through hole 30b, and the protrusion 30a has a pair of spring portions 30c elastically contacting the tilt elongated hole 4b.

Therefore, the tightening bolt 29 has the screw portion 29a.
One end having a groove is inserted from a tilting long hole 4b provided in one side wall portion 4a of the upper bracket 4, and a telescopic long hole 27 of the distance bracket 27 is inserted.
b and 27b are penetrated, and the long slot 4b for tilt provided in the other side wall part 4a of the upper bracket 4 is penetrated.
The rotation stop ring 29 at the other end of the tightening bolt 29 is fitted with the rotation stop member 30 by serration, and the protrusion 30a of the rotation stop member 30 is fitted into the tilting long hole 4b, as shown in FIG. The push nut 35 is pushed into the tightening bolt 29 and brought into pressure contact with the rotation preventing member 30.

Here, in the vicinity of the other end of the tightening bolt 29,
As shown in FIGS. 2 and 7 to 8, the positioning member 31 and the lock plate 32 are fitted and inserted in the distance bracket 27. The positioning member 31 is a thick resin plate interposed in the narrow portion 28b of the tooth portion 28a of the reinforcing plate 28, and the through hole 3 through which the tightening bolt 29 passes.
1a, a pair of left and right protrusions 31b, and a spring portion 31d formed of an elongated hole 31c. Lock plate 32
Is a through hole 32a through which the tightening bolt 29 penetrates, a through hole 32b into which the protrusion 31b of the positioning member 31 is fitted, and a tooth portion 32c that faces the tooth portion 28a of the reinforcing plate 28 and can mesh with the tooth portion 32c. Have. The spring portion 31d is the reinforcing plate 2
Sliding in the narrow portion 28b of No. 8 and in normal time,
The teeth 32c of the lock plate 32 are separated from each other so as not to mesh with the teeth 28a of the reinforcing plate 28, and the lock plate 32 is positioned.

Further, at one end of the tightening bolt 29, as shown in FIG.
Also, as shown in FIG. 4, the positioning member 33 and the lock plate 34 are provided on the other side wall 4 a side of the upper bracket 4.
Is inserted. The positioning member 33 is a resin member,
Through hole 33a through which tightening bolt 29 is passed, and the through hole 3a
A pair of spring portions 33b formed by notching and bending a part of 3a
And a pair of protrusions 33c protruding from the plate surface by embossing.

The lock plate 34 is a metal plate and has a through hole 34a through which the tightening bolt 29 penetrates, a through hole 34b into which the protrusion 33c of the positioning member 33 is fitted, and a tooth portion 16a of the lock plate 16. And a tooth portion 34c capable of meshing with each other.

Then, the positioning member 33 is replaced with the one shown in FIG.
As shown in (B), the spring portion 33b is provided in the tilting long hole 4b.
Is fitted so as to come into contact with the inner wall of the tilting long hole 4b, and the lock plate 34 is attached to the positioning member 33.
c and the through hole 34b to integrally connect the tilting long hole 4
It is arranged in sliding contact with the side wall portion 4a around b so as to be vertically movable.
The spring portion 33b is normally provided with the lock plate 3
The tooth portion 34c of No. 4 is separated from the tooth portion 16a of the lock plate 16 so as not to mesh with each other, and the lock plate 34 is positioned.

Further, a washer 36 is fitted into the threaded portion 29a of the tightening bolt 29, and a nut 37 is screwed into it, and the polygonal hole 38a of the operating lever 38 is fitted into the nut 37 and fixed by welding. To do. It should be noted that the tightening bolt 29 has a flip-up spring 39 in the distance bracket 27.
One end 39a of the spring is abutted, and the other ends 39b and 39b of the flip-up spring 39 are inserted into the engagement holes 4e and 4e formed in the side wall 4a of the upper bracket 4. Therefore, the tightening bolt 29 is always urged by the force of the flip-up spring 39 so as to move above the tilting long hole 4b.

Although the positioning members 31 and 33 are positioned by the spring portions 31d and 33b, they may be positioned as shown in FIG. That is, a pair of spaced legs 33d are provided on the side surface of the positioning member 33 in a protruding manner, and the positioning member 33 is sheared by the base portion 33e to cause the legs 3d to move.
A space 33f into which 3d enters is formed. The base portion 33e is sheared when an excessive load is applied in the direction of the arrow, and thus the leg 33d is formed so as to be buried in the space portion 33f. The positioning member 31 has a through hole 33g for inserting the tightening bolt 29 therein.

The contracting body 6 is, as shown in FIG.
A metal plate having a predetermined width and thickness is bent into a substantially Z shape, and has a pair of through holes 6a for connecting with the elastic joint 50 and a deformed cross section of the shaft. And a connection end portion 6d having a hole 6c. As shown in FIG. 1, the lower bracket 7 includes an annular body 7a that holds the bearing 21b of the shaft 21 and a stay 7 connected to the annular body 7a.
b. The contracting body 6 may be a bellows shaft as shown in FIG. Shafts 41 and 42 are connected to both ends of a bellows 40, which is a hollow body having a bellows-like structure that can expand and contract in the axial direction.

The operation of the above-described embodiment will be described. When adjusting the tilt, the operation lever 38 is rotated downward to rotate the nut 37 and move it away from the upper bracket 4, so that the side walls 4a, 4a of the upper bracket 4 are moved. Since the force for tightening the side wall portion 27a of the distance bracket 27 is released, the occupant sets the optimum angle for himself by moving the steering wheel 17 upward or downward, and again turns the operation lever 38 in the opposite direction. When the nut 37 is rotated in reverse by operating the nut 37,
6, the upper bracket 4 through the lock plate 34
The side wall portion 4a of the side wall portion 2a of the distance bracket 27 is
By tightening 7a, a frictional force is generated to fix the set angle.

Then, in the telescoping adjustment, the operating lever 38 is pivoted downward to release the tightening of the side wall portion 4a, and the steering wheel 17 is moved forward and backward as described above, and the spline shaft 20 is inserted. 19 and a shaft 18 connected to the steering wheel 17 are integrated with the column jacket 2
You can move back and forth with 2. At this time, the hinge bracket 23 moves along the hinge bolt 24 penetrating the telescopic long hole 23a, and the distance bracket 27 engages with the telescopic long hole 27b.
Move along 9. Therefore, by rotating the operation lever 38 in the opposite direction at a desired position to tighten the side wall portion 4a of the upper bracket 4 to the side wall portion 27a of the distance bracket 27, a frictional force is generated to set the position of the steering wheel 17. Fix it.

At the time of adjusting the tilt and the telescopic lens,
The spring portion 31d of the positioning member 31 has a lock plate 32.
Tooth portion 32c of the reinforcing plate 28 is separated from the tooth portion 28a of the reinforcing plate 28, and the spring portion 33b of the positioning member 33 prevents the tooth portion 34c of the lock plate 34 from meshing with the tooth portion 16a of the lock plate 16. Since they are separated from each other, there is no obstacle to the axial movement and vertical movement of the column jacket 22.

In an emergency (secondary collision) when the occupant collides with the steering wheel 17 due to a vehicle collision accident.
The occupant moves forward from the seat and collides with the steering wheel 17. Since the steering wheel 17 is inclined with respect to the occupant, this impact load is applied to the column jacket 22 via the shaft 18 and the bearing 22a in the axial downward direction and the upward direction about the hinge bolt 24. Cause rotation. Therefore, the distance bracket 27 is pressed toward the tightening bolt 29.

Therefore, the frictional force due to the tightening force of the tightening bolt 29 is defeated by this impact load, the tightening bolt 29 moves from one side to the other side in the tilt long hole 4b, and the distance bracket 27 telescopically moves. The long hole 27b for use is moved. Therefore, the positioning member 33 in the tilting long hole 4b.
The spring portion 33b of the lock plate 34 bends, and the tooth portion 34 of the lock plate 34
c engages with the tooth portion 16a of the lock plate 16, the spring portion 31d of the positioning member 31 bends, and the tooth portion 32c of the lock plate 32 becomes the tooth portion 28 of the reinforcing plate 28.
mesh with a. Thus, the column jacket 22 and the upper bracket 4 maintain a fixed relationship.

Further, the impact load applied further causes the upper bracket 4 to move horizontally toward the front side of the vehicle body. Therefore, the upper bracket 4 moves in parallel to the mounting bracket 2 and the side wall portion 4a of the upper bracket 4 moves. The screw screwed into the protruding nut 13 moves away from the plate 11 together with the slide plate 14 and moves in the slide long hole 2b. During this movement, the upper bracket 4 cuts the energy absorbing member 3 into the cut lines 3
Since it tears along a, it absorbs impact energy by its cutting and plastic deformation. Further, the contraction body 6 is bent and deformed by the forward movement of the upper bracket 4, and the displacement stroke of the movement of the steering column is absorbed by the plastic deformation.

When the steering gear box 9 moves backward due to the backward movement of the vehicle body front structure, the bellows 8a of the intermediate shaft bends to absorb the displacement stroke. Further, in the above-described embodiment, the positioning member 31, the lock plate 32 and the lock plate 28 facing the positioning member 31, the positioning member 33, the lock plate 34 and the lock plate 16 facing the positioning member 33.
Are arranged on only one side of the distance bracket 27 and the upper bracket 4, respectively, but may be arranged on both sides of each.

[0042]

As described above, according to the present invention, when an impact load is input, a pair of lock plates arranged in the vicinity of the telescopic elongated hole for facing the axial movement of the column jacket face the tooth portions. Mesh with each other, and the facing tooth portions of a pair of lock plates arranged in the vicinity of the elongated hole for tilting mesh with each other with respect to the vertical movement of the column jacket. Since the column jacket is prevented from moving due to an overwhelming impact load, the problem of adopting a tilt / telescopic steering device that is adjusted by frictional force can be solved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of essential parts of the present invention.

FIG. 3 is a partially exploded perspective view (A) and a sectional front view (B) of a tilt structure portion.

FIG. 4 is an exploded perspective view of a tilt and telescopic tightening structure portion.

5A and 5B are a side view (A) of one side and a side view (B) of the other side of the tilt and telescopic tightening structure portion.

FIG. 6 is a sectional front view of a tilt and telescopic structure portion.

FIG. 7 is an exploded perspective view of a part of FIG.

FIG. 8 is a side view of a portion of FIG.

FIG. 9 is a perspective view (A) and a side view (B) showing another example of the positioning member.

FIG. 10 is a perspective view of the contracting body (A) and a sectional view of the bellows shaft (B).

[Explanation of symbols]

 4b ... Long hole for tilt 16, 32, 34 ... Lock plate 16a, 28a, 32c, 34c ... Tooth portion 22 ... Column jacket 27 ... Distance bracket 27b ... Telescopic long hole 28 ... Reinforcement plate (lock plate) 29 ... Tightening Bolt 30 ... Tightening member 31, 33 ... Positioning member 31d, 33b ... Spring portion 38 ... Operation lever

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[Procedure amendment]

[Submission date] September 22, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (3)

[Claims] 1. A steering shaft, which is movable in the axial direction, is housed in a column jacket, a distance bracket fixed to the column jacket is provided with a telescopic elongated hole parallel to the axis of the column jacket, and the telescopic elongated hole is penetrated. In the telescopic steering device in which the tightening bolt that penetrates from one side of the upper bracket and the distance bracket can be tightened on both sides of the upper bracket via the tightening member and the operation lever, the displacement to the tightening bolt is performed. A lock plate having a possible positioning member and a tooth portion is fitted and inserted, and another lock plate having a tooth portion that engages with the tooth portion of the lock plate is fixed near the telescopic long hole of the distance bracket, In addition, face the lock plate to another lock plate It is arranged with the positioning member at a position separated by the positioning member, and at the time of a collision, the positioning member is displaced so that the tooth portions of the both lock plates are meshed with each other to prevent axial movement of the column jacket. A steering device for a vehicle, characterized in that 2. A tilting elongated hole is provided in an upper bracket that accommodates a steering shaft in a column jacket and slidably holds a distance bracket fixed to the column jacket, and the distance bracket is inserted from the tilting elongated hole. In a tilt steering device in which a tightening bolt that penetrates is penetrated from one side of the upper bracket, and a distance bracket can be tightened on both sides of the upper bracket via a tightening member and an operation lever, respectively, in the tightening bolt, A displaceable positioning member and a lock plate having a tooth portion are fitted and fixed, and another lock plate having a tooth portion that engages with the tooth portion of the lock plate is fixed near the tilting elongated hole of the upper bracket. And the lock plate is replaced with the other lock plate. Is arranged with the positioning member at a position spaced apart by the positioning member facing each other, and the positioning member is displaced at the time of collision so that the tooth portions of the both lock plates are meshed with each other, whereby the column jacket is moved in the vertical direction. A steering device for a vehicle, characterized in that 3. A steering shaft that is movable in the axial direction is housed in a column jacket, a distance bracket fixed to the column jacket is provided with a telescopic elongated hole parallel to the axis of the column jacket, and the distance bracket can be slid. A tilt long hole that overlaps with the telescopic long hole is provided in the upper bracket to be sandwiched between, and a tightening bolt penetrating the distance bracket from the tilt long hole is penetrated from one side of the upper bracket, and In a tilt / telescopic steering device capable of tightening a distance bracket through a tightening member and an operating lever on both sides, two locking members having two positioning members and teeth are fitted and inserted into the tightening bolt, One of the positioning members is the telescopic length It is arranged near the hole, the other of the positioning members is arranged in the tilting long hole, and the positioning member and the lock plate are integrally fixed respectively,
Further, another lock plate having a tooth portion facing the tooth portion of the one lock plate is formed on the distance bracket near the telescopic long hole, and a tooth portion facing the tooth portion of the other lock plate is formed. A steering device for a vehicle, wherein the other formed lock plates are fixed to the upper brackets in the vicinity of the tilting long holes, respectively.