JPH0594054U - Vehicle steering system - Google Patents

Abstract

(57) [Abstract] [Purpose] A vehicle with a single-shaped structure and a special washer with a rotation stop function that allows the 1-way capsule and the bracket to move smoothly relative to each other and to improve reliability. A steering device is provided. A steering shaft (1) having a steering wheel (3), a steering column (2) into which the shaft is inserted and a bracket (4), and a one-way capsule (12) attached to the bracket via an easily rupturable connecting portion (16). A mounting long hole 17 provided in the way capsule, a special screw 20 which is inserted into the mounting long hole to fix and fix the 1-way capsule to the vehicle body plate 8, and a special wall portion 31 having a vertical wall portion 31 so that a general-purpose tool is not applied to the screw head 20a. Washer 3
0. The special washer is provided with a claw piece portion 32 which is inserted into the attachment long hole to prevent the special washer itself from rotating.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in a holding structure for attaching and holding a steering device in a vehicle to a vehicle body.

[0002]

[Prior Art]

 FIG. 5 shows a part of a steering device of a vehicle, for example, a passenger car.

In FIG. 1, reference numeral 1 denotes a steering column 2 having a steering shaft 1 protruding only at an upper end thereof inserted therein, and a steering wheel 3 is provided at an end of the shaft 1 protruding from the column 2.

The steering column 2 has a built-in mechanism for absorbing an impact applied to the shaft 1 from the engine room side and a mechanism for absorbing an impact applied when the body is hit on the steering wheel 3. ..

A bracket 4 for attaching and fixing to a mounted portion of a vehicle body is integrally attached and fixed to a middle portion of the steering column 2. The mounting and holding structure of the bracket 4 with respect to the mounted portion will be described later.

Further, the bracket 4 is provided with a lever (hereinafter, referred to as a tilt lever) 5 for a driver to adjust an optimum vertical position of the steering wheel 3 relative to the driver.

A steering joint 6 is provided at the tip of the column 2 and is further connected to the front wheels via a cover assembly 7 and a gear linkage mechanism (not shown). As shown in FIG. 6, the steering column 2 is attached and fixed to a vehicle body plate 8 which is an attached portion of the vehicle body via a bracket 4.

That is, the column plate portion 4a is integrated with a part of the column 2 by means such as welding, and is engaged with the tilt bracket 4b. The bracket 4b is provided with an adjusting tilt bolt 9 that fixes or frees the column 2 by rotating the tilt lever 5 described above, a screw 10 and a nut 11.

With these, the column plate portion 4a and the tilt bracket 4b can be tightened and fixed or loosened, and the position of the column 2 can be adjusted in a loosened state so that the steering wheel 3 position suitable for the driver can be obtained. Is becoming

The tilt bracket 4 b has a portion integrated with the bracket 4, and both ends of the bracket 4 (only one is shown) are attached and fixed to the vehicle body plate 8 via the 1-way capsules 12, respectively. It

As shown in FIGS. 6 to 8, the 1-way capsule 12 is a flat rectangular plate, and rectangular grooves 13 and 13 are provided along both side end faces thereof. On the other hand, the bracket 4 is provided with a rectangular cutout hole 14 from the end edge thereof, and the groove portions 13, 13 of the one-way capsule 12 are slidably fitted to the opposite side portions.

Further, the four corners of the one-way capsule 12 and the same portion of the bracket 4 are provided with holes 15 ... Which communicate with each other, and the resin poured into all of these solidifies to connect them to each other. To form a connecting portion 16.

The 1-way capsule 12 is provided with a long attachment hole 17 along the fitting direction with respect to the bracket 4. The special washer 18 is placed so as to cover the elongated hole 17, and the special screw 20 is attached to the attaching hole 18b provided in the washer 18 and the attaching hole 19 provided in the attaching elongated hole 17 and the vehicle body plate 8. Is inserted.

A nut 21 is screwed onto the end of the special screw 20 projecting from the vehicle body plate 8, and the bracket 4 is attached and held to the vehicle body plate 8 via the 1-way capsule 12.

When a strong impact is applied to the bracket 4 from the vehicle body plate 8 or the steering wheel 3 via the steering column 2, the resin of the connecting portion 16 connecting the 1-way capsule 12 and the bracket 4 is broken. Then, the bracket 4 and the 1-way capsule 12 make a relative movement within the range of the mounting long hole 17, and the shock is absorbed.

The special screw 20 has a head 20a that can be attached and detached only by a special tool for exclusive use, and is used here to prevent theft due to removal of a key cylinder (not shown).

The special washer 18 is integrally provided with a vertical wall portion 18a that covers the periphery of the screw head 20a so that the head 20a of the special screw 20 is not covered with a general-purpose tool such as a player.

The washer 18 is formed in a substantially triangular shape when seen in a plan view, and the vertical wall portion 18 a of the portion corresponding to the bottom side contacts the bent portion 4 c of the bracket 4. By forming such an abutting portion, even if a general tool such as pliers is applied to the standing wall portion 18a of the special washer 18 to forcibly rotate the washer 18, the rotation is prevented.

[0019]

[Problems to be solved by the device]

 With such a steering device holding structure, thorough measures are taken against impact mitigation measures and theft prevention measures, but in particular, there remains a problem with the rotation preventive structure of the special washer 18.

That is, there are many types of passenger cars to be manufactured, and the structural dimensions of the steering device differ to some extent depending on the model. Therefore, the shape and size of the bracket 4 naturally differ.

Since the upright wall portion 18a, which is the rotation preventing portion of the washer 18, is brought into contact with the bracket 4, the washer 18 must also have a shape and dimension adapted to it. Therefore, the washer 18 also has to be diversified, and the production management becomes troublesome.

Further, when a strong impact is applied and the one-way capsule 12 and the bracket 4 move relative to each other, the special washer standing wall portion 18a and the bracket bending portion 4c are relatively slidably in contact with each other. Become. At this time, since the standing wall portion 18a has a certain length, the sliding contact area with respect to the bent portion 4c is large, which may hinder smooth movement.

The present invention has been made in view of the above circumstances, and its purpose is to provide a special washer that has a detent function and has a single-shaped structure regardless of the type of vehicle, and It is an object of the present invention to provide a vehicle steering system in which the bracket and the one-way capsule are smoothly moved relative to each other when a strong impact is applied, the impact is reliably absorbed, and the reliability is improved.

[0024]

[Means for Solving the Problems]

 To achieve the above object, the present invention inserts a steering shaft equipped with a steering wheel into a steering column, and a bracket is integrally attached and fixed to an outer peripheral wall of the steering column so that the bracket can be easily broken. A 1-way capsule that absorbs impact through the connecting part is provided, and a special screw for attaching and fixing the 1-way capsule to the mounting part of the vehicle body is inserted into the mounting long hole of the 1-way capsule. A steering device for a vehicle characterized in that a special washer is interposed between the way capsule and the special washer, and a claw piece that is inserted into the attachment long hole to prevent the special washer from rotating is provided. Is.

[0025]

[Action]

 The claw piece provided on the special washer is engaged with the mounting long hole of the 1-way capsule to prevent the washer from rotating, thus eliminating the engagement of the washer with the bracket.

That is, the special washer is not affected by the shape and structure of the bracket, and the relative movement between the one-way capsule and the bracket is smooth during shock absorption.

[0027]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. As the basic structure of the steering device, the structure described above with reference to FIG. 5 can be applied as it is, and therefore a new description is omitted here.

As shown in FIG. 3, the holding structure for the steering device is the same as that shown in FIG. 6 except for a special washer 30 which will be described later. The description is omitted. As shown in FIG. 4, the special washer 30 is configured.

This has a circular shape in a plan view, and a standing wall portion 31 is integrally provided along the periphery thereof. The diameter of the standing wall portion 31 is formed to be slightly larger than the head portion 20a of the special screw 20.

A pair of claw pieces 32, 32 are provided on the bottom surface in a state of being separated and opposed to each other. That is, a substantially H-shaped cut is provided in the bottom surface portion, and both side ends are used as bent portions, and double-sided cut and raised processing is performed on the bottom surface side. As a result, the rectangular through-hole portion 33 is opened, and the cut-and-raised pieces formed at both ends become the claw piece portions 32, 32.

The lateral width of the through hole portion 33 (which is also the lateral width dimension of the claw piece portion 32) is smaller than the lateral width dimension of the attachment slot 17 of the 1-way capsule 12 into which the special screw 20 can be inserted. Set smaller.

As shown in FIGS. 1 and 2, the special washer 30 is interposed between the special screw 20 and the one-way capsule 12, and the standing wall portion 31 covers the periphery of the screw head 20 a.

The claw pieces 32, 32 of the special washer 30 are inserted into the mounting elongated hole 17. To explain further, the claw pieces 32, 32 are inserted along the lateral width direction which is a direction orthogonal to the longitudinal direction of the mounting elongated hole 17.

From this, although the special washer 30 can be moved along the longitudinal direction of the mounting elongated hole 17, the claw pieces 32, 32 can be mounted on the side surface of the elongated hole 17 to move along the circumferential direction. It will be regulated by abutting against.

Such a special washer 30 covers the head portion 20a of the special screw 20 and prevents the rotation of the screw 20 using a general-purpose tool such as pliers.

Further, even if the special washer 30 is completely disengaged from the bracket 4 and the shape structure of the bracket 4 is different due to the difference in vehicle type, there is no effect. As long as the one-way capsule 12 is not changed, it is sufficient to prepare the one having the single shape and size as shown in the figure, and this production management becomes extremely easy.

When the bracket 4 is moved due to the impact on the steering wheel 3, the resin of the connecting portion 16 connecting the 1-way capsule 12 and the bracket 4 is sheared and broken, and the 1-way capsule 12 and the bracket 4 are opposed to each other. It does not change, and it also absorbs the shock. Moreover, at this time, since the special washer 30 is not engaged with the bracket 4, relative movement can be performed extremely smoothly.

Even if a general-purpose tool such as pliers is bitten on the standing wall portion 31 of the special washer 30 and is forced to rotate by force, the claw pieces 32, 32 are attached to the mounting long hole 1. Since they are inserted in 7, the rotation of them is restricted. Therefore, it provides reliable anti-theft protection.

[0039]

[Effect of the device]

 As described above, according to the present invention, since the special washer is provided with the claw piece and is engaged with the mounting long hole of the one-way capsule, the special washer has a single-shaped structure regardless of the vehicle type. It suffices if the equipment is provided, and this production management can be facilitated. In addition, the special washer is no longer engaged with the bracket, and the relative movement of the 1-way capsule and the bracket is smoothly performed to absorb the impact, thereby improving the reliability.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a vehicle steering system showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part of the embodiment.

FIG. 3 is a plan view of a main part of the embodiment.

FIG. 4 is a perspective view of the bottom side of the special washer of the embodiment.

FIG. 5 is a partially omitted perspective view of a general steering device.

FIG. 6 is a plan view of a main part of a conventional steering device for a vehicle.

FIG. 7 is a plan view of a main part of the conventional example.

FIG. 8 is an exploded perspective view of a main part of the conventional example.

[Explanation of symbols]

3 ... Steering wheel, 1 ... Steering shaft, 2 ... Steering column, 4 ... Bracket, 16 ...
Connection part, 12 ... 1-way capsule, 17 ... Mounting long hole,
8 ... Attached part of vehicle body (body plate), 20 ... Special screw, 20a ... (of special screw)
Head portion, 30 ... Special washer, 31 ... Stand wall portion (of special washer), 32 ... Claw piece portion.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Makoto Kashimoto No. 1 Nakashiniri, Hashime-cho, Okazaki City, Aichi Prefecture Mitsubishi Motors Engineering Co., Ltd. Okazaki Plant

Claims (1)

[Scope of utility model registration request] 1. A steering shaft integrally provided with a steering wheel, a steering column into which the steering shaft is inserted, and a bracket integrally mounted and fixed to an outer peripheral wall of the steering column.
A one-way capsule that is attached to this bracket through a connection portion that can be easily broken, and that absorbs the shock by relatively moving with the bracket due to the break of the connection portion when a large shock is applied from the steering column. 1
A mounting long hole provided in the way capsule, a special screw that is inserted into the mounting long hole and can be attached / detached only by a special tool for mounting and fixing the 1-way capsule to a mounted portion of the vehicle body, and this special screw and 1
A special washer that is inserted between the way capsule and a special screw that has a vertical wall that covers the periphery of the head so that the head of the special screw is not covered by a general-purpose tool such as pliers. A steering device for a vehicle, comprising: a claw piece that serves as a detent for the special washer itself.