JPH0629150Y2 - Tilt / telesco type steering support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a steering support device, and
The present invention relates to a support device for a tilt / telescopic steering wheel.

[Prior Art] In order to obtain an optimal steering position according to the physique and seating posture of the driver, a tilt / telescopic type steering that can adjust the steering vertically and longitudinally has been recently set on the vehicle. Various techniques related to tilt / telescopic steering have been proposed (see, for example, Japanese Utility Model Laid-Open No. 59-117575).

FIG. 3 shows a schematic view of such a tilt / telescopic type steering, in which reference numeral 1 is a steering column, 3
Is a first steering shaft that passes through the steering column 1, the first steering shaft 3 is connected to the second steering shaft 9 through the yokes 5 and 7,
Further, the second steering shaft 9 has a yoke 11,
It is connected to the steering gear box 15 via 13. Then, the force to rotate the steering wheel 17 is transmitted to the steering gear box 15 via the steering shafts 3 and 9.

A bellows-shaped cover 18 is attached below the steering column 1 to cover the connecting portions of the yokes 5 and 7, and the cover 18 has a tube fixed to a support 19 having a U-shaped cross section. Shaped plastic cover 21
Is fitted to cover the second steering shaft 9.

The support 19 is formed of a plate material having a U-shaped cross section for covering the steering column 1, and a floor panel 2 shown in FIG. 4 via a bracket 23 having an L-shaped cross section welded to a lower end portion thereof.
It is bolted to 5. The operation lever 2 of the steering column lock device (not shown) mounted on the steering column 1 is provided on one of the upper side surfaces 19a.
7 has a long hole 29 formed therein. The operation lever 27 is operated in the direction of arrow A to release the steering column lock device, and the steering column 1 is moved to the long hole 29.
When moving in the front-rear direction (directions of arrows B and C) along the direction of the steering wheel 1, the steering wheel 1 is rotated about a shaft 35 described later.
7 is tilted in the same direction. Then, after the steering wheel 17 is appropriately tilted, if the operation lever 27 is operated in the direction of arrow D, the steering wheel 17 is locked at any position.

The second steering shaft 9 has a spline shaft 9a having a groove cut in parallel with the axial direction as shown in FIG.
And a shaft 9b to which the spline shaft 9a is slidably fitted. Then, the steering column lock device is released by the operation lever 27,
When the steering column 1 is moved in the vertical direction (arrow E, F direction), the spline shaft 9a moves in the same direction in the shaft 9b, and the steering wheel 17 moves in the vertical direction according to the physique of the driver as shown in FIG. It can be positioned. As shown in FIG. 3, a guide bracket 33 having a U-shaped cross section is attached to the lower end of the steering column 1 and has long holes 31 on both sides thereof. The fitted shaft 35 serves as a lower support point of the steering column 1.

In addition, in FIG. 3, reference numeral 37 is a bracket 39, 4
A stay that supports the upper side of the support 19 via 1 and one end of the stay 37 is attached to a structural member of an instrument panel (not shown). Also, the fourth
In the figure, reference numeral 43 is a vehicle frame to which the steering gear box 15 is attached.

[Problems to be solved by the device]

The conventional tilt / telesco type steering has the above-described configuration and is supported by the floor panel 25 by the support 19 as described above. The support 19 is mounted on the floor panel 25 by the bracket 23 having a small ground contact area with the floor panel 25. Since the structure is supported, a large load is applied to the mounting portion of the floor panel 25 to which the bracket 23 is attached, and the floor panel 25 may be damaged due to concentration of stress.

Conventionally, as disclosed in Japanese Utility Model Publication No. 59-43166, a steering shaft cover member having a flange portion is fixed to a floor panel to support a steering column,
There is one in which a wide flange portion of the steering shaft cover member is brought into contact with a floor panel to increase a ground contact area with the floor panel to avoid stress concentration.

However, since the side portion of the steering column is supported only partially by the small bracket fixed to the instrument panel, the supporting strength of the steering column is weak and not sufficient.

Therefore, the durability of the steering column was not sufficient.

The present invention has been devised in view of such circumstances, and an object thereof is to provide a support device for a tilt / telescopic type steering having a sufficient durability of a steering column.

[Means for Solving the Problems]

The structure of the present invention for attaining such an object is a tilt in which a steering shaft cover member having a flange portion is fixed to a floor panel to cover the lower side of the steering column, and the steering column is supported by the steering shaft cover member. -In the support device of the telescopic steering, the side part of the steering column is
One end is fixed to the instrument panel and the other end is supported by a support fixed to the steering shaft cover member.

[Action]

According to the present invention, a steering shaft cover member having a flange portion fixed to a floor panel supports the entire steering column, and one end is fixed to the instrument panel and the other end is fixed to the steering shaft cover member. By supporting the side surface of the steering column entirely, the supporting strength of the steering column is increased, and therefore the durability of the steering column is sufficient.

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. Since the configuration excluding the devised portion is similar to the conventional one, the description thereof will be omitted here, and only the devised portion will be described. Further, the same components as those in the above-mentioned conventional example are designated by the same reference numerals, and their structural description will be omitted.

In FIG. 1, reference numeral 45 is a tubular metal cover that is a steering shaft cover member connected to the lower end of the steering column 1 via a cover member 18, and the metal cover 45 is the second steering shaft 9 And is bolted to the floor panel 25 via a flange portion 47 formed at the lower opening edge thereof. In the figure, reference numeral 49 is a bolt for fixing the metal cover member 45 to the floor panel 25, and 51 is a bolt mounting hole formed in the flange portion 47. And
In this embodiment, instead of the conventional support 19 shown in FIG. 3, a slightly shorter support 53 is used, one end of which is fixed to an instrument panel and the other end is attached to the floor panel 25. It was fixed at 45.

The support 53 is formed of a plate material having a U-shaped cross section that covers the side surface of the steering column 1 like the conventional support 19, and one end of the support 53 includes the brackets 39 and 41 and the stay 3.
It is fixed to the instrument panel through 7, and the other end is fixed to the metal cover 45 by bolting. The support 53 supports the side surface of the steering column 1 entirely and the entire steering column 1 is a floor panel. It is supported by a metal cover (steering shaft cover member) 45 having the flange portion 47 attached to 25.

In the figure, 55 is a bolt for fixing the support 53 to the metal cover 45, and 57 and 59 are bolt mounting holes formed in the support 53 and the metal cover 45, respectively.

FIG. 2 is a side view of the tilt / telesco type steering support device of the present invention which supports the steering column 1.

With this configuration, the steering wheel 17 can be appropriately tilted and its height can be freely adjusted by operating the operation lever 27 as in the conventional case.

Further, the steering column 1 has one end fixed to the instrument panel by brackets 39, 41 and the like, and the other end supported by a support 53 fixed by a metal cover 45 having a flange 47, and a side portion thereof. The entire steering column 1 is supported by the metal cover 45 having the flange portion 47 attached to the floor panel 25.

That is, the side surface of the steering column 1 is entirely supported by the support 53, which is provided in a bracing pattern between the instrument panel and the floor panel 25, and the metal cover 45, which is the steering shaft cover member, and the floor panel 25 is wide. Since the steering column 1 is doubly supported by supporting the entire steering column 1 with the metal cover 45 fixed at the ground contact area, the supporting strength of the steering column 1 is increased, and therefore the durability of the steering column 1 is increased. , Will be enough.

Further, since the steering column 1 is supported by the metal cover 45 fixed with a wide ground contact area, stress concentration on the floor panel 25 is eliminated, and the risk of damage to the floor panel 25 is eliminated.

In the above embodiment, the metal cover 45 is attached to the floor panel 25.
Although it is bolted to, it may be attached by welding. Further, instead of the metal cover 45, the cover member may be made of a material having strength.

[Effect of device]

As described above, according to the present invention, the supporting strength of the steering column is increased and the durability of the steering column is increased, which is sufficient.

Further, stress concentration on the floor panel is eliminated, and damage to the floor panel is avoided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a supporting device for a tilt / telescopic steering according to an embodiment of the present invention, FIG. 2 is a side view of a tilt / telescopic steering supported by the supporting device according to the above embodiment, and FIG. FIG. 4 is an exploded perspective view of a conventional tilt / telescopic steering device, FIG. 4 is a side view of the tilt / telescopic steering device supported by the conventional supporting device, and FIG. 5 is an enlarged side view of the second steering shaft. is there. 1 ... Steering column 45 ... Metal cover 47 ... Flange 53 ... Support

Claims (1)

[Scope of utility model registration request] 1. A support device for a tilt / telescopic steering system, wherein a steering shaft cover member having a flange portion is fixed to a floor panel to cover a lower side of a steering column, and the steering column is supported by the steering shaft cover member. A support device for a tilt-telescopic steering, wherein a side portion of the steering column is supported by a support having one end fixed to an instrument panel and the other end fixed to the steering shaft cover member.