JPS62103258A - Tiltable steering wheel device for vehicle - Google Patents

Abstract

PURPOSE:To aim at simplifying the structure of a tiltable steering mechanism, by laying a column change rod in parallel with and along one side of a steering shaft such that it is possible to prevent the steering shaft and the column change gear from being displaced relative to each other during tilt manipulation. CONSTITUTION:A steering shaft 1 is composed of upper and lower shafts 2, 3 which are coupled with each other through the intermediary of a universal joint 4. An upper shaft 2 is rotatably supported in an upper steering column 7 which is tiltable about the center of the universal joint 4 or the rotary axis 8 passing through the tilt center. A column change rod 10 for carrying out the gear shift operation of an automatic speed change gear is arranged in parallel with and along one side of the above-mentioned shaft 1. The rod 10 is also divided into upper and lower sections which are coupled with each other by means of a universal joint 14 having its center positioned on the horizontal line A passing through the tilt center. Further, an energy absorbing means S for relieving thrust-up force is provided to the lower rod 13.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tilt steering wheel device for a vehicle. The present invention relates to a tilt handle device for a vehicle that can be attached to the vehicle.

(Prior Art) In the conventional tilt handle device of the type described above, the steering shaft and the column change rod are arranged on the same vertical plane, as disclosed in Japanese Utility Model Application Publication No. 58-75175, for example. were placed parallel to each other.

(Problem to be Solved by the Invention) When the steering shaft and the column change rod are arranged parallel to each other in the vertical plane, when the tilt handle device is tilted, the steering shaft and the column change rod are Since it is necessary to move four pairs of rods between the rods, there are problems such as the need to provide an engaging member that engages the column change rod with the steering shaft so as to be movable in the axial direction with respect to the steering shaft. was there.

Another problem is that the column change rod protrudes into the vehicle interior due to the impact during a vehicle collision.

An object of the present invention is to provide a tilt handle for a vehicle that prevents relative displacement from occurring between the steering shaft and the column change rod when the tilt handle device is tilted, and that can reduce the impact of a vehicle collision on the column change rod. The goal is to provide equipment.

(Means for Solving the Problems) The vehicle tilt handle device of the present invention is provided with a tilt handle of a vehicle that is attached to a steering gear shaft and a column change rod so that the steering gear shaft and the column change rod can be tilted using their respective universal joints as fulcrums. In the device, the steering shaft is rotatably supported within a steering shaft jacket tube that can be tilted integrally with the shaft, and the column change rod is attached to the steering shaft at a side of the steering shaft. The column extends substantially parallel to the steering shaft, and its distal end is supported by a bracket fixed to the steering shaft jacket tube so as to be displaceable in the axial direction and in the direction of rotation about the shaft. The lower rod under the universal joint of the change rod has
It is characterized by being provided with energy absorbing means for alleviating thrust force.

(Function) The tilt steering wheel device for a vehicle according to the present invention is configured as described above, and the column change rod is arranged parallel to the side of the steering shaft. This ensures that no relative displacement occurs between the change rods. Furthermore,
The lower rod under the universal joint of the column change rod is provided with an energy absorbing means for alleviating thrust force, and when a vehicle collides, the collision energy is absorbed by the absorbing means, and the column change rod It is designed not to protrude into the room.

(Embodiments) Hereinafter, a tilt handle device for a vehicle according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1, 2, and 3 are a plan view, a side view, and a perspective view, respectively, of a tilt handle device for a vehicle according to an embodiment of the present invention. In addition, in FIG. 1, a coil spring as a biasing means for the column change rod is omitted.

In these figures, reference numeral 1 indicates a steering shaft, and this steering shaft 1 includes an upper shaft 2 that supports a steering handle H, a lower shaft 3 that is connected to a steering gear (not shown),
These upper shaft 2 and lower shaft 3 are connected by a universal joint 4 at a universal joint portion. The lower shaft 3 is rotatably supported by a lower steering column 6 fixed to the vehicle body at its upper end by a support bracket 5 having a substantially U-shaped cross section. On the other hand, the upper shaft 2 is rotatably supported by an upper steering column 7 that can be tilted vertically with respect to the lower steering column 6. This upper steering column 7 is connected to a horizontal straight line A that passes through the center of the universal joint 4, that is, the tilt center, and extends at right angles to the upper shaft 2.
It is rotatably supported by a rotating shaft 8 disposed above.

Although not shown in detail, the rotating shaft 8 is provided with a screw-type locking mechanism, and when this locking mechanism is released, it can be tilted, and when the locking mechanism is activated,
The tilt angle state is maintained. To operate this locking mechanism, use the steering tilt lever 9.
is provided.

A column change rod 10 is provided on the right side of the steering shaft 1 in parallel with the steering shaft 1 to perform a speed change operation of an automatic transmission (not shown). The column change rod 10 includes an upper rod 12 connected to a column change lever 11, and a lower rod 13 connected to a select valve (not shown) of a hydraulic control circuit of an automatic transmission. These upper rods 1
2 and the lower rod 13 are connected to the universal joint 1 at the universal joint portion whose center is located on the horizontal straight line A.
Connected by 4. Therefore, the upper shaft 2 of the steering shaft 1 and the upper rod 12 of the column change rod 10 are always located in the same plane rotating around the horizontal straight line A as the center of rotation during tilting, and thus there is a relative relationship between them during tilting. There is no force that causes motion.

At the lower right end of the support bracket 5, a flange 15 extending outward from the side is formed integrally with the bracket 5. This flange 15 has a column change rod 10
The lower rod 13 is inserted into the insertion hole 16, and the lower rod 13 is supported by the flange 15 so that it can rotate but not move in the axial direction. There is.

The upper rod 12 includes a base 17 and a tubular movable member 19 connected by a spline 18 so as to be movable only in the axial direction relative to the base 17. The change lever 11 is fixed to this tubular movable member 19. The shaft 24 of the movable member 19 is supported by a bracket 23 fixed to the upper column 7 so as to be movable in the axial direction and in the direction of rotation about the shaft.

A guide plate 20 for column change of automatic transmission is fixed to the upper column 7, and this guide plate 20 has a cam surface for positioning the column change rod 10 at an angular position corresponding to each shift position. It has 21. A pin 22 is fixed to the movable member 19, which contacts and engages a suitable portion of the cam surface 21 to position the column change rod 10 at an angular position corresponding to a predetermined shift position.

The column change rod 10 is biased toward an appropriate angular position by spring means. Hereinafter, this spring means will be explained using FIG. 3. Two coil springs 25 and 26 that act in opposite directions are provided so as to provide a resistance to the rotational direction of the column change rod 10. That is, the coil spring 25 has one end fixed to the upper rod 12, The other end of the coil spring 26 is fixed to the mounting R20a of the guide plate 20, and one end of the coil spring 26 is fixed to the lower rod 13.
The other end is fixed to the flange 15. Therefore, the coil springs 25 and 26 cause the column change rod 10 to
is centered by applying a drag force to the direction of rotation, thereby preventing swinging of the change lever 11.
The shift feel link of the change lever 11 is improved.

Next, the energy absorbing means provided on the lower rod 13 below the universal joint 14 of the column change rod 10 will be explained with reference to FIG. 4.5.6. In addition, FIG. 5.6 shows the VV cross section and the ■-■ cross section of FIG. 4, respectively. Also, the fourth
In the figure, the coil springs 25, 26 of FIG. 3 are omitted.

The lower rod 13 consists of a rod 27 and a tube 28 , and an insertion portion 29 of the rod 27 is inserted into an inserted portion 30 of the tube 28 . As shown in FIG. 6, the insertion portion 29 is shaped like a cylinder with both sides cut, and the inserted portion 30 is shaped to fit into this insertion portion 29. 29 and the inserted portion 30 are fitted, so that the opening 7 door 27 and the tube 28 rotate integrally.

As shown in FIG. 5, a part of the insertion part 29 has two thin gs (S29a) that are thinner than the other parts, and between this part 29a and the inserted part 30, A resin 31 is injected through a hole 30a formed in the inserted portion 30, and the inserted portion 29 and the inserted portion 30 are fixed so as not to move in the axial direction.

The resin 31 formed in the hole 30a serves as a shear pin 31a, which fixes the insertion part 29 and the inserted part 30 to each other in the axial direction, and also secures the lower rod 13 in the event of a vehicle collision.
When a thrusting force is applied to the tube 28 in the direction of arrow B, this nya pin 31a is cut from the other part 31b of the resin 31, and only the inserted part 30 moves in the direction of arrow B, and the collision energy is absorbed. It has become so. Note that the inserted portion 30 can move in the direction of arrow B by a stroke β with respect to the insertion portion 29.

In addition to such energy absorbing means, a stopper 32 is formed on the rod 27 of the lower rod 13 as another energy absorbing means. As described above, when a vehicle collides, the shear pin 31a is cut and the inserted part 30 moves in the direction of arrow B. However, if the collision energy still remains after the inserted part 30 has moved by a stroke l, Rod 27 moves in the direction of arrow B. At this time, the stopper 32 hits the flange 15,
Collision energy is absorbed.

(Effects of the Invention) As explained above, the tilt handle of the vehicle of the present invention
In the JW, when the tilt handle device is tilted, there is no force that causes relative displacement between the steering shaft and the column change rod, and furthermore, the column change rod can reduce the impact caused by a vehicle collision. .

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1, FIG. 2, and FIG. The figure is an explanatory diagram showing the configuration of the energy absorbing means, and Figures 5.6 and 5.6 are cross-sectional views taken along line v-■ and ■- in Figure 4, respectively.
■It is a sectional view. 1... Steering shaft, 2...
Upper shaft, 3...Lower shaft, 4...
... Universal joint, 5 ... Support bracket, 6 ... Lower steering column,
7... Upper steering column, 10...
...Column change rod, 12...Upper rod, 13...Lower rod, 14...
・Universal joint, 15...flange, 16...insertion hole, 25.26...coil spring, 27...rod, 28... Tube, 29...insertion section, 29a...details,
30... Inserted part, 30a... Hole, 3
1...Resin, 31a...Sharpin, 3
1b...Other parts, 32...Stopper, A...Horizontal straight line.

Claims (1)

[Scope of Claims] A vehicle tilt handle device in which a steering shaft and a column change rod are installed side by side so that they can be tilted using their respective universal joints as fulcrums, wherein the steering shaft is a steering wheel that can be tilted integrally with the shaft. The column change rod is rotatably supported within the shaft jacket tube, and the column change rod extends to the side of the steering shaft in a state substantially parallel to the steering shaft, and the tip thereof is connected to the steering shaft. It is supported by a bracket fixed to the shaft jacket tube so that it can be displaced in the axial direction and in the direction of rotation around the shaft, and the lower rod below the universal joint of the column change rod has a rod that reduces thrust force. A tilt steering wheel device for a vehicle, characterized in that it is provided with energy absorbing means for.