JPH0443420Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a support device for a tilt-type steering column.

[Prior Art] Conventionally, in the case of a support device for attaching a steering column equipped with an energy absorption device to a mounting portion on the vehicle body side, the steering column is connected to the steering column through a tilt clamp, as described in, for example, Japanese Utility Model Publication No. 7981/1981. In addition to mounting and supporting the column, the clamp attachment portion of the tilt clamp is attached to the vehicle body side attachment portion with bolts and nuts via a U-shaped washer.

If an impact load of more than a predetermined value is applied to the steering wheel via the driver during a car collision, etc., the clamp mounting part of the tilt clamp will separate from the mounting part on the vehicle body side, ensuring safety. It's summery.

In addition, among tilt type steering column support devices including the above-mentioned tilt clamp, a tilt type steering column is known that can ensure an optimal steering wheel posture according to the height of the driver.

That is, as shown in FIG. 4, for example, in the tilt type steering column, long holes 103, 103 (the opposite side is not shown) are provided on both sides of the tilt clamp 101, and the steering column 105 is provided with a distance bracket. The distance bracket 107 is connected to the tilt clamp 10 by a tilt bolt 111 that fixedly supports the distance bracket 107 and rotatably fixes the tilt lever 109.
1.

A hole 113 is provided in the distance bracket 107 at a position corresponding to the long hole 103 of the tilt clamp 101.

Therefore, by loosening the tilt bolt 111, the elongated hole 10 provided in the tilt clamp 101 can be opened.
3, the steering column 105
can be adjusted up and down (arrow A in the figure).

[Problems to be solved by the invention] However, in the above-mentioned conventional tilt type steering column 105, the tilt bolt 111
Since the support structure is fixed to the tilt clamp 101 by the tightening force of , the following problems occurred.

In other words, when an impact load is applied to the steering wheel via the driver, such as during a collision,
The steering column 101 is located at the front (arrow B in the figure)
As a result, the tilt clamp 101 receives a rotational moment about the tilt bolt 111 and rotates clockwise relative to the steering column 105.

If the steering column 105 is further pushed forward in such a state, the clamp attachment part 115 of the tilt clamp 101 will deform with respect to the vehicle body side attachment part 117, and will move forward in a biased (twisted) state. Because it will be pushed by
There was a problem in that it did not come off smoothly from the vehicle body side attachment part 117, and an excessive impact load was transmitted to the driver, which was not desirable from a safety standpoint.

Therefore, the purpose of this invention is to create a tilt-type steering wheel that can ensure safety by allowing the clamp mounting part of the tilt clamp to smoothly detach from the vehicle body side mounting part when an impact load is applied to the steering column. The purpose is to provide column support equipment.

[Means for Solving the Problems] In order to achieve the above object, the tilt type steering column support device of this invention fixes a distance bracket to a steering column equipped with an energy absorption device, and A bracket is supported so as to be movable up and down relative to the tilt clamp, and the clamp mounting portion of the tilt clamp is
In the support device that is detachably attached to the vehicle body side mounting portion when an impact load is applied to the steering column, an end of the tilt clamp is attached to both side edges of the distance bracket when an impact load is applied to the steering column. The present invention is characterized in that a stopper member is provided that comes into contact with the edge and restricts rotation of the tilt clamp.

[Function] In the tilt-type steering column support device of this invention, when an impact load is applied to the steering column via the driver, such as during a car collision, a clockwise rotation moment about the tilt bolt is generated. acts on the tilt clamp, but at this time, the stopper member provided on the distance bracket comes into contact with the tilt clamp, thereby reliably preventing rotation of the tilt clamp.

Therefore, no biased load is applied between the clamp attachment part of the tilt clamp and the vehicle body side attachment part, and the clamp attachment part of the tilt clamp can be smoothly removed from the vehicle body side attachment part, resulting in excellent safety. is ensured.

[Embodiment] Hereinafter, an embodiment of the tilt type steering column support device of this invention will be described in detail with reference to FIGS. 1 to 3.

In the figure, 1 indicates a steering column that slidably supports a steering shaft 37 equipped with an energy absorption device between the upper shaft 39 and the lower shaft 41. tube 5
It is constructed by connecting these. The lower tube 3 is rotatably supported by a lower bracket 11 fixed to the vehicle body via a tilt hinge 7 and a connecting member 9.

At approximately the center of the upper tube 5, there is a hole 1.
A U-shaped distance bracket 15 having numbers 3 and 13 is fixed.

The distance bracket 15 is supported by a tilt clamp 17 having a U-shaped cross section, and a clamp mounting portion 1 protrudes from the left and right sides of the tilt clamp 17.
9 and 19 are bolted 25 to a vehicle body mounting portion 23 (see FIG. 3) via a U-shaped washer 21.

Further, stopper members 27, 27 are integrally formed on one end side of the distance bracket 15 (on the left side in FIG. 1), and protrude to both sides.
The stopper members 27, 27 face close to the front edge of the tilt clamp 17.

That is, the stopper members 27, 27 provided on the distance bracket 15, which is fixed integrally with the steering column 1, are activated when an impact load in the direction of arrow C in FIG. 3 is applied to the steering column 1 via the driver. , the tilt clamp 1
This tilt clamp 17 is in contact with the edge side of 7.
It has the function of regulating the rotation of.

On the other hand, on both sides of the tilt clamp 17, elongated holes 29, 29 for adjustment are provided at positions corresponding to the holes 13, 13 of the distance bracket 15.

And the long holes 29, 29 of the tilt clamp 17
and holes 13, 13 of distance bracket 15.
A tilt bolt 33 is passed through the tilt bolt 33, and a nut 35 provided integrally with the tilt lever 31 is screwed into the male threaded portion 33a of the tilt bolt 33.

Furthermore, a steering shaft 37 is slidably inserted through the steering column 1. Steering shaft 37 is Atsupahshaft 39
and a lower shaft 41, and the upper shaft 39 is serration-fitted to the lower shaft 41 via a steel ball 40 fitted into a circumferential groove 39a formed at its lower end. In addition, the lower end of the lower shaft 41 is
It is connected to a joint portion 45 via a universal joint 43, and this joint portion 45 is connected to a steering gear (not shown).

Furthermore, a steering wheel 47 (see FIG. 3) is attached to the upper end of the upper shaft 39.

In the tilt type steering column support device configured in this way, by loosening the tilt bolt 33 by operating the tilt lever 31, the steering wheel 47 can be adjusted up and down within the range of the long holes 29, 29 provided in the tilt clamp 17. becomes possible.

Next, when an impact load in the direction of arrow C is applied to the steering column 1 during a car collision, etc., a clockwise rotation moment is generated in the tilt clamp 17 using the tilt bolt 33 as a fulcrum; Since the stopper members 27, 27 provided on the distance bracket 15 come into contact with the edge of the tilt clamp 17, further rotation of the tilt clamp 17 is reliably prevented. Therefore, no unreasonable load is applied to the clamp attachment portion 19 of the tilt clamp 17, and the clamp attachment portion 19 is attached to the vehicle body side attachment portion 23.
Excellent safety can be ensured as the vehicle can be smoothly disengaged from the vehicle.

[Effects of the invention] As explained above, according to the support device for a tilt type steering column of this invention, when an impact load is applied to the steering column, the stopper member provided on the distance bracket can stop the tilt clamp. Since the rotation of the tilt clamp is reliably prevented, the clamp attachment part of the tilt clamp can be easily and smoothly removed from the vehicle body side attachment part, which not only ensures excellent safety, but also prevents the steering column's energy absorption device. can be operated normally.

Further, since it is sufficient to simply provide stopper members on both side edges of the distance bracket, there is no need to change the structure of the conventional steering column.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the tilt steering column support device of this invention, Fig. 2 is a sectional view of the main parts in Fig. 1, Fig. 3 is a side view, and Fig. 4 FIG. 2 is a side view showing a conventional tilt-type steering column support device. 1... Steering column, 15... Distance bracket, 17... Tilt clamp, 19
...Clamp mounting part, 23...Vehicle body side mounting part, 2
7...Stopper member.

Claims (1)

[Scope of utility model registration request] A distance bracket is fixed to a steering column equipped with an energy absorption device, and this distance bracket is supported so as to be movable up and down with respect to a tilt clamp, and an impact load is applied to the clamp mounting portion of the tilt clamp on the steering column. When an impact load is applied to the steering column, both side edges of the distance bracket come into contact with the edge side of the tilt clamp, and the support device is detachably attached to the vehicle body side mounting portion. A support device for a tilt type steering column, characterized in that a stopper member is provided for regulating rotation of a clamp.