JPS5941893Y2 - Tilt handle fixing device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fixing device for a tilt steering wheel, and in particular, includes a fixing bracket provided on a part of a vehicle body, a movable bracket provided on a column tube that pivotally supports a tiltable steering shaft, a releasable fixing means that has a shaft passing through both the brackets and fixes the brackets so that they cannot move relative to each other, so that the steering shaft can be fixed at a desired angle of inclination. This invention relates to an improvement in a fixing device, and its purpose is to provide a mechanism groove that provides a sense of moderation to the operator when the steering shaft is tilted, which can be easily configured and inexpensively provided.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example in which the present invention is applied to a vehicle in which the steering shaft 10 is relatively upright, such as a cab-over type truck or bus. 12 so as to be tiltable.

Also, this steering shaft 10 has a column tube 1
3, and a steering wheel 14 is fixed to the upper end thereof.

The column tube 13 is attached to the toe board 15 at its lower end, and also has a tilt handle fixing device 20 according to the present invention.
It is supported so that its tilting position can be adjusted.

Note that a column cover 16 is attached to the outer periphery of the upper end of the column tube 13.

As shown in FIG. 2, the tilt handle fixing device 20 includes a fixed bracket 21, a movable bracket 22,
A fixing means 30 is provided having a shaft 31 passing through both brackets 21,22.

As shown in FIG. 1, the fixing bracket 21 is fixed to the lower end of the instrument panel 17 at its tip.

A pair of left and right arm portions 21R and 21L are integrally formed at the rear of the fixed bracket 21, and the right arm portion 21R has a coupling 1 as shown in FIG.
Three engagement holes 21r to 21r, which are continuous and partially overlap each other, are bored along a tilting locus L (tilting direction) centering on the left arm 21L (this is shown in FIG. 4). As shown in FIG.
is drilled.

The movable bracket 22 consists of a base material 22A formed into a U-shape and fixed to the column tube 13, and a tube 22B that bridges both arm portions 22R and 22L of the base material 22A. A hole 221 having a diameter smaller than the inner diameter of the tube 22B is bored.

The tube 22B is fixed to the base material 22A by having its left end surface contact the right side surface of the left arm portion 22L, and its right end fitting into a hole 22r formed in the right arm portion 22R#. ing.

The fixing means 30 is a releasable means for fixing both brackets 1-21, 22 so that they cannot move relative to each other, and is
A stepped shaft 31 having a head 31a inserted into the hole 2211 tube 22B and the retaining hole 21r, a knob 32 screwed onto the right end threaded portion 31b of this shaft 31, and a knob 32 inserted into the outer periphery of the small diameter portion 31c of the shaft 31. A shaft 31 is provided with a plate 33 that is pressed against the right side surface of the right arm portion 21R of the fixing bracket 21 at the left end surface of the knob 32.
As shown in FIG. 4, the head 31a of the left arm 21L of the fixing bracket 21 is partially cut out.
The rotation of the shaft 31 is prevented by engagement with the fixed stopper plate 34.

The left portion of the knob 32 is formed in a hollow shape, and a screw 35 is attached to this hollow portion from the outside. When the screw 35 engages with a pin 36 inserted into the small diameter portion 31c of the shaft 31 and fixed, the knob 32 is closed. 32 is prevented from being removed.

Therefore, in this embodiment, the collar 40 is fitted into the tube 22B of the movable bracket 22 located on the outer periphery of the small diameter portion of the shaft 31 so as to be movable in the axial direction, and the left end is connected to the left arm portion 22L of the movable bracket 22. The plate 3 is biased to the right by a coil spring 41 locked on the right side.
It is in contact with the left side of 3.

As shown in FIG. 3, the collar 40 is connected to the engagement hole 21r.
It is formed of spring steel having an outer diameter that is approximately the same as the diameter of ~21r, and four axial slits 140a to 40a are provided on the left side of the spring steel as shown in FIGS. 3 and 5. and is configured such that the outer diameter of the left portion can be reduced.

In this embodiment configured in this manner, when the knob 32 is screwed into the shaft 31 as shown in FIG. Both brackets 21,
22's arms 21R, 21L, 22R, and 22L are held together, and the collar 40 is pushed to the left against the action of the spring 41.

Therefore, a frictional engagement force is generated between each of the arm portions 21R, 522R, 21L, and 22L, and the portion of the collar 40 without the slit 40a fits into one of the engagement holes 21r (center engagement hole 21r). Relative movement of both brackets 21 and 22 is restricted.

Thereby, the steering shaft 10 and the column tube 13 are held at a predetermined inclination angle, and the steering wheel 14 is positioned and held at a predetermined position.

By the way, when the knob 32 is screwed back, the collar 40 is pushed by the spring 41 and moves to the right.

Thus, when the screw 35 comes into contact with the pin 36, the collar 4
The portion where the 0 slit 40a is located is located within the engagement hole 21r.

In this case, each arm part 21R, 22R and 21L, 2
There is no frictional engagement force between 2L, and the collar 40 is in the engagement hole 21r.
The steering shaft 10 is fitted within the steering shaft 10.
and column tube 13 are held.

As a result, when the steering wheel 14 is moved in a desired direction, the collar 40 reduces its outer diameter and moves into the adjacent engagement hole 21r, and the steering shaft 10 and column tube 13 are centered around the coupling 11. and tilt it to the desired angle.

At this time, the collar 40 reduces its outer diameter and moves into the adjacent engaging hole 21r, and its self-returning force causes the retaining hole 21r to move into the adjacent engaging hole 21r.
Since it engages with r, it gives the operator a sense of moderation.

After tilting the steering shaft 10 and column tube 13 by a desired angle Q in this way, by screwing the knob 32, the plate 33 is pushed to the left and becomes as shown in FIG. 2 again. As described above, the steering shaft 10 and column tube 13 are held at a desired inclination angle, and the steering wheel 14 is positioned and held at a desired position.

In addition, when implementing the present invention, it is also possible to employ the collar 140 shown in FIG. 6 as the collar.

The collar 140 is provided with an axial slit 140a throughout, and when this collar 140 is used,
By slightly screwing back the knob 32, it is possible to tilt the steering shaft 10 and column tube 13 to a desired angle of inclination ζ.

Further, in carrying out the present invention, as shown in FIG. If it is made of resin, it is possible to absorb impact energy during a vehicle collision.

Furthermore, when implementing the present invention, as shown in FIGS. 8 and 9, the right arm portion 121R of the fixed bracket 121 is
A plate 123 made of a wear-resistant material may be fixed to the plate 123, and engagement holes 123a to 123a that correspond to the engagement holes 21r to 21r may be provided in the plate 123.

In this case, the arc-shaped elongated hole 12 is provided in the right arm portion 121R.
It is necessary to provide 1a.

Furthermore, in the fourth embodiment described above, an example was explained in which the present invention was applied to a tilt handle fixing device 20 equipped with a screw-type fixing means 30. Various fixing devices for the handle (for example, the fixing device for the tilt handle disclosed in U.S. Pat. be.

In summary, in the present invention, in the above-mentioned tilt knife fixing devices, an elastic collar having an axial slit and whose outer diameter can be reduced is inserted into the outer periphery of the shaft, and - a blade fixing bracket; A plurality of retaining holes for accommodating collars are arranged in succession in the direction of tilting of the steering shaft, and when the steering shaft is tilted, the collars reduce their outer diameter and move into adjacent engaging holes. Its distinctive feature lies in the fact that it is able to achieve the purpose stated in the title.

[Brief explanation of the drawing]

Fig. 1 is a side view showing one embodiment of the present invention, and Fig. 2 is a side view showing an embodiment of the present invention.
An enlarged cross-sectional view taken along the line ■-■ in the figure, Figure 3 is the 2nd
Figure 4 is a side view taken along the line ■-■ in the figure, Figure 4 is a side view seen from the arrow ■ direction in Figure 2, Figure 5 is a perspective view of the collar,
FIG. 6 is a perspective view showing a modified example of the collar, and FIG. 7 is a side view of essential parts showing another embodiment of the present invention. 8 and 9 are views showing a modification of the present invention, in which FIG. 8 is a partial sectional view, and FIG. 9 is a diagram showing IX-D of FIG.
It is a side view seen along the C line. Explanation of symbols, 10...Steering shaft,
13...Column tube, 14...Steering wheel, 20...Tilt handle fixing device, 21...Fixing bracket, 21r
~21r...Engagement hole, 22...Movable bracket, 30...Fixing means, 31...
・Shaft, 40...Color.

Claims (1)

[Scope of utility model registration request] A fixed bracket provided on a part of the vehicle body, a movable bracket provided on a column tube that pivotally supports a tiltable steering shaft, and a shaft passing through both brackets to fix both brackets so that they cannot move relative to each other. A fixing device for a tilt handle is provided with a releasable fixing means to fix the steering shaft at a desired angle of inclination. An elastic collar whose outer diameter can be reduced is inserted into the fixed bracket, and an engagement hole for accommodating the collar is formed in the fixing bracket in the direction of tilting of the steering shaft. A fixing device for a tilt handle, wherein when the shaft is tilted, the outer diameter of the collar is reduced and the collar moves into the adjacent engagement hole.