JPH0531015Y2 - - 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, in the tilt type steering column, as shown in FIG. 5, for example, 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 pushed further forward in this 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 detachably attached to the vehicle body side mounting part due to an impact load acting on the steering column, a regulation bracket for preventing rotation of the tilt clamp with respect to the steering column is fixed to the steering column, and a regulation bracket for preventing rotation of the tilt clamp relative to the steering column is fixed to the steering column. It is characterized in that both ends are engaged with opposing engagement recesses formed inside the tilt clamp.

[Function] In the tilt type steering column support device of this invention, when a primary load is applied to the steering column during a car collision, the steering column is connected to the vehicle body side mounting part by the engagement of the regulation bracket and the tilt clamp. Because it is integrated, backward movement is suppressed.

Next, when an impact load is applied to the steering column via the driver, a clockwise rotational moment about the tilt bolt acts on the tilt clamp. Since they are integrated, rotation of the tilt clamp is reliably prevented.

Therefore, an unbalanced and unreasonable load will not be applied between the clamp mounting part of the tilt clamp and the vehicle body side mounting part, and the clamp mounting part of the tilt clamp will smoothly move away from the vehicle body side mounting part against impact loads. This ensures excellent safety.

[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 4.

In the figure, 1 indicates a steering column that slidably supports a steering shaft 35 equipped with an energy absorption device between the upper shaft 37 and the lower shaft 39. 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.

Approximately at the center of the lower surface of the top part tube 5,
A U-shaped distance bracket 15 having holes 13, 13 is fixed thereto.

The distance bracket 15 is supported by a tilt clamp 17 having a U-shaped cross section, and the clamp attachment portions 11 protruding on the left and right sides of the tilt clamp 17 are
The first and second plates 9 and 19 are secured to a vehicle body side mounting portion 23 (see FIG. 2) by means of a U-shaped washer 21 by means of a bolt 25.

Further, on both side surfaces of the tilt clamp 17, elongated holes 27, 27 for adjustment are provided at positions corresponding to the holes 13, 13 of the distance bracket 15.

And the long holes 27, 27 of the tilt clamp 17
and holes 13, 13 of distance bracket 15.
A tilt bolt 31 is passed through the tilt bolt 31, and a nut 33 provided integrally with the tilt lever 29 is screwed into the male threaded portion 31a of the tilt bolt 31.

Furthermore, a steering shaft 35 is slidably inserted into the steering column 1. Steering shaft 35 is Atsupahshaft 37
The upper shaft 37 is serration-fitted to the lower shaft 39 via a steel ball 41 fitted into a circumferential groove 37a formed at its lower end. In addition, the lower end of the lower shaft 39 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).

On the other hand, a regulation bracket 49 is interposed between the tilt clamp 17 and the steering column 1.

That is, the regulation bracket 49 has a U-shaped cross section and is fixed to the upper surface of the steering column 1. Furthermore, on the inside of the clamp body 17a of the tilt clamp 17, opposing engaging recesses 51, 51 are formed which are open at the top, and both ends of the regulation bracket 49 are inserted into the engaging recesses 51, 51. engaged.

The regulation bracket 49 does not protrude to the outside and has a structure that can be made compact.

Therefore, the steering column 1 can move up and down without interfering with the tilt clamp 17.

In the tilt type steering column support device configured in this way, by loosening the tilt bolt 31 by operating the tilt lever 29, the steering wheel 47 can be adjusted up and down within the range of the long holes 27, 27 provided in the tilt clamp 17. (arrow c in Figure 2) becomes possible.

Next, when a primary load (arrow D in FIG. 2) is applied to the steering column 1, such as during a car collision, both ends of the regulating bracket 49 are pushed into the engagement recess 5.
1 and 51, it becomes integrated with the vehicle body attachment part 23, and the backward movement of the steering column 1 is suppressed.

Next, when an impact load (arrow H in FIG. 4) is applied when the driver contacts the steering wheel 47 following the primary load, a clockwise rotation moment is applied to the tilt clamp 17 using the tilt bolt 31 as a fulcrum. However, at this time, the steering column 1 and the tilt clamp 17 are connected to the regulation bracket 4.
9 and the engagement recesses 51, 51 are integrated into one body, further rotation of the tilt clamp 17 is reliably prevented.

Therefore, no unreasonable load is applied to the clamp attachment part 19 of the tilt clamp 17, and the clamp attachment part 19 is smoothly detached from the vehicle body side attachment part 23, so that excellent safety can be ensured.

[Effects of the invention] As explained above, according to the tilt type steering column support device of this invention, the following effects can be obtained.

(a) When a primary load is applied to the steering column, the backward movement of the steering column can be minimized.

(b) When an impact load is applied to the steering column via the driver, the rotation of the tilt clamp is reliably prevented by the engagement between the regulating bracket and the engagement recess; The mounting part can be easily and smoothly removed from the vehicle body side mounting part, and not only can excellent safety be ensured, but also the energy absorption device of the steering column can function normally.

(c) Since the regulation bracket does not protrude outward, it can be made more compact.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the tilt type steering column support device of this invention, Fig. 2 is a side view showing the installed state in Fig. 1,
FIG. 3 is a sectional view of the main part in FIG. 1, FIG. 4 is a side view illustrating the operation in FIG. 2, and FIG. 5 is a side view showing a conventional tilt type steering column support device. 1... Steering column, 15... Distance bracket, 17... Tilt clamp, 17
a... Clamp body, 19... Clamp mounting part,
23...Vehicle body side mounting portion, 49...Regulation bracket, 51, 51...Engagement recess.

Claims (1)

[Scope of utility model registration request] A distance bracket is fixed to a steering column equipped with an energy absorption device, this distance bracket is supported vertically movably relative to a tilt clamp, and the clamp mounting portion of the tilt clamp is connected to the impact load acting on the steering column. In the supporting device detachably attached to the vehicle body side mounting portion, a regulating bracket for preventing rotation of the tilt clamp with respect to the steering column is fixed to the steering column, and both ends of the regulating bracket are placed inside the tilt clamp. A support device for a tilt type steering column, characterized in that the support device is engaged with formed opposing engagement recesses.