JPS624669A - Supporting structure for steering column - Google Patents

Abstract

PURPOSE:To facilitate assembly work by reducing the number of parts by supporting a steering column at one part through a pair of brackets. CONSTITUTION:A part in the upper part of a steering column 2a is supported through a chassis side bracket 3 and a column side bracket 4. The chassis bracket 3 is constituted of a curved surface part which has a semicircular section and is welded onto a hanger part 12 installed onto a chassis side 11 and a flange part 14 formed at the both edges of the curved surface part. Also the column-side bracket is constituted of the curved surface part having a semiconductor section and a flange part 24 opposed to the flange part 14.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a support structure for a steering column of a vehicle.

(Conventional technology) In order to absorb the load in the event of a collision, conventionally, a pair of brackets that are fixed to the vehicle body side and the steering column side, respectively, and which sandwich the steering column, are placed at two locations above and below, which are spaced apart in the axial direction of the steering column. The flange portions of the respective brackets at the upper and lower portions are removably connected to each other via bolts in the axial direction of the steering column.

(Problem to be Solved by the Invention) Therefore, in the conventional steering column support structure, brackets are provided at two locations, upper and lower, separated in the axial direction of the steering column, which requires a large number of parts and requires assembly work. It becomes complicated, and there are also problems such as space constraints for the brackets placed below so as not to interfere with the brackets of various pedals, especially for electric power steering devices with an electromagnetic booster built into the steering column. The diameter of the steering column was large, making it extremely inconvenient to install the lower bracket.

The present invention has been devised in view of the above circumstances, and one object of the present invention is to reduce the number of parts, simplify the assembly work, and provide support for the steering column that is advantageous in terms of space layout. It is there to provide structure.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a pair of brackets (3) that are fixed to the vehicle body side (11) and the steering column (2) side, respectively, and sandwich the steering column (2). ,(4
) on both sides of the flanges (14), (24), (1
4) (24) are arranged facing each other, and the 7 rungs (1
4) and (24) at least three locations spaced apart in the axial direction of the steering column (2), respectively.
4B) and (53).

(Function) Since the steering column (2) is supported in one place via a pair of brackets (3) and (4), the number of parts can be reduced and one assembly can be easily performed.

It is also advantageous in terms of space layout.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

Figure 1 is a side view of the steering column support structure; Figure 2 is a side view of the steering column support structure;
The figure is a side view of the vehicle body side bracket, Figure 3 is a view in the direction of the ■ arrow in Figure 2, Figure 4 is a side view of the column side bracket, Figure 5 is a view in the direction of the V arrow in Figure 4, and Figure 6 is a view in the direction of the V arrow in Figure 4. A cross-sectional view of the flange portion is shown.

(1) is a steering wheel, (2) is a steering column, and the upper part of the steering column (2) is supported via a vehicle body side bracket (3) and a column side bracket (0).

The vehicle body side bracket (3) includes a hanger part (12) attached to the vehicle body side (11), and a curved part (13) welded to the hanger part (12) and having a semicircular cross section and a required length. and 7 rungs (14) formed on both sides of the curved surface (13).
) and (14), the front end of the seven rungs (14) is formed with a central part (15) that is open to the front, and the rear end is formed with a bolt insertion hole (1B). , (18) in the figure indicates a stiffener.

The column side bracket (4) is attached to the steering column (
2) A curved surface portion (23) attached to the side and having a semicircular cross section and a required length;
The rung part (14), the flange part facing the (14) (
24) and (24).

A spacer (25) is provided at the front end of the seven rungs (24).
are welded together, and a bolt insertion hole (2B) is formed through the spacer (25) and the flange portion (24).

The rear end of the flange portion (20 has a central portion (
27).

Furthermore, a curling plate (31) is provided on the flange portion (24) by welding one end to the front portion of the central portion (27).

The curling plate (31) is made of rolled steel in the embodiment, and one end is welded (31d) to the front part of the center part (27).
The lower part (
31a), a curved part (3l b) formed at the front end of the lower part (31a), and an upper part (31c) extending rearward from the curved part (31b), and the lower surface of the rear end of the upper part (31c). A spacer (33) is welded to the upper part (31c) and a bolt insertion hole (30) is formed through the spacer (33).

As shown in Fig. 6, the front end of the flange portion (14) of the vehicle body side bracket (3) and the column side bracket (4)
At the rear ends of the flange parts (24), U-shaped plates (41) and (42) each having a low-friction surface treatment, such as Teflon coating, are attached to the rear ends of the flange parts (14) and (24).
), and then connect the 7 rungs (14) and (24).
At the front end of the plate (41), insert the bolt (4B) from above through the bolt insertion holes (44), (44), the center part (15), and the bolt insertion hole (28) through the washer (45). The rear ends of the flanges (14) and (24) are fitted with bolt insertion holes (113), (34) and bolts of the plate (42) from above. Common hole (51).

(51), insert the bolt (53) into the center part (27), and tighten and fix the bolt (55) through the washer (54).

Next, the movements of brackets (14) and (24) during a collision will be explained.

At the time of a collision, the column side bracket (24) moves forward together with the steering column (2) as shown by arrow A in Figure 6, and the brackets (14) and (24)
5).

The bolts (4B) and (53) are separated from the fastening portion via (27), and the collision load is absorbed by the deformation of the curling plate (31).

In this case, the plates (41) and (4
2) respectively, Pol) (4El), (53
) Both flanges (
10° (24) is a bolt (4B), (53) detached in a direction perpendicular to the longitudinal direction, and an error in tightening force, etc., and a clamp proportional to the diameter of the steering column (2). Regardless of the magnitude of the force, the curling plate (31) always receives the collision load, and the set collision load can be maintained with high precision.

In addition, in the example, the collision load is calculated by curling brake)
Although the case of receiving the collision load has been described in (31), the method of receiving the collision load is arbitrary. For example, the collision load may be received by bolt fastening force as in the conventional method.

Therefore, according to this embodiment, a pair of brackets) (3) are provided.

Since the steering column (2) is supported at one place at the upper part via (4), the number of parts can be reduced and the assembly work can be performed easily.

In addition, since the steering column (2) is supported in one place at the top of the steering column (2), the steering column (2) can be supported without interfering with the brackets of various pedals, which is advantageous in terms of space layout. It is suitable for use in an electric power steering device with a large column diameter.

(Effect of the invention) According to the present invention, as is clear from the above description.

This reduces the number of parts in the steering column support structure, simplifies assembly work, and is also advantageous in terms of space layout.

[Brief explanation of drawings]

Figure 1 is a side view of the steering column support structure; Figure 2 is a side view of the steering column support structure;
The figure is a side view of the vehicle body side bracket, and Figure 3 is the same as in Figure 2.
4 is a side view of the column-side bracket, FIG. 5 is a view taken along the V arrow in FIG. 4, and FIG. 6 is a sectional view of the flange portion. In the drawings, (1) is a steering wheel, (2) is a steering column, (3) is a vehicle body side bracket, (4) is a column side bracket, and (14) and (24) are flange parts.

Claims (1)

[Claims] Flange portions are arranged to face each other on both sides of a pair of brackets that are fixed to the vehicle body side and the steering column side and sandwich the steering column, and at least two portions of each of the flange portions are spaced apart in the axial direction of the steering column, A steering column support structure characterized by being connected to each other via bolts.