JP2535423Y2 - Stopper structure of automobile steering system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement in a stopper structure for restricting a steering angle of a wheel at the time of turning in a steering device of an automobile.

"Prior art" This kind of stopper structure generally used is the third type.
As shown in FIGS. A and B, a stopper bolt 2 is fixed to a knuckle arm 1 connecting a front wheel of the vehicle via a knuckle spindle 1a via a nut 3 and the like, while a stopper bracket 5 is attached to a suspension link 4 on the vehicle body side. By turning the head 2a of the stopper bolt 2 into contact with the stopper bracket 5 at the time of steering, the rotation angle of the steering knuckle is limited, and thereby the steering angle of the front wheels can be restricted. (Public Technical Report 83-
No. 2790). In the drawing, reference numeral 6 denotes a steering tie rod.

And, conventionally, when the head 2a of the stopper bolt 2 is brought into direct contact with the stopper bracket 5,
Since unpleasant metal sounds are generated due to rubbing between metals, the head of the stopper bolt 2 is
2a is fitted with a cap 7 made of a similar synthetic resin to prevent generation of unpleasant metal noise.

[Problem to be Solved by the Invention] However, in such a conventional stopper structure, fitting the synthetic resin cap body 7 to the head 2a of the stopper bolt 2 requires that the head 2a of the stopper bolt 2 be the stopper. Since it does not come into direct contact with the bracket 5, it is theoretically thought that it is possible to prevent the generation of unpleasant metal noise. However, in actual operation, the synthetic resin cap body 7 and the stopper bracket If they rub against each other under strong pressure, the synthetic resin cap body 7 would be abraded or damaged early, and a hole would easily be formed in that portion.

For this reason, simply putting the synthetic resin cap 7 on the head 2a of the stopper bolt 2 cannot effectively prevent the generation of unpleasant metal noise, and sufficiently achieve the intended purpose. Could not.

[Means for Solving the Problems] The present invention has been developed to effectively solve the above-mentioned conventional problems, and a synthetic resin cap body is provided at a predetermined portion of a steering knuckle at a head portion. Fixing the fitted stopper bolt, at the time of steering, by contacting the head of the stopper bolt with the stopper bracket on the vehicle body side, assuming the stopper structure of the automobile steering device that regulates the steering angle of the wheel, The synthetic resin cap body has a hexagonal tubular shape similar to the hexagonal head of the stopper bolt and covers a top surface and side surfaces of the head, while a metal protective cover fitted on the synthetic resin cap body. The metal protective cover has a hexagonal cylindrical shape that covers the top surface and side surfaces of the cap similar to the synthetic resin cap, and defines the hexagonal cylindrical shape of the protective cover. A plurality of notches that bend inward are formed on the flat side, and the leading edge of each notch is cut into the corresponding flat side of the synthetic resin cap body.

In the present invention, a metal protective cover is further fitted to the outside of the synthetic resin cap body, so that, for example, the head of the stopper bolt and the stopper bracket may be subjected to strong pressure. Even if they are rubbed with each other, the cap body made of synthetic resin will not be worn out or damaged and the hole will not be opened at all, as in the past, so that it is possible to effectively prevent the generation of unpleasant metal noise. It becomes possible.

In addition, when forming the notch on the metal protective cover, since the notch is formed on the flat side surface that defines the hexagonal cylinder shape, the notch can be easily bent inward, so that the productivity is excellent. At the same time, since the notch nails bite into the corresponding flat side surfaces of the synthetic resin cap, the two can be easily assembled simply by fitting the metal protective cover to the outside of the synthetic resin cap. Therefore,
Not only the assembling workability becomes extremely good, but also the fitting state becomes very strong, and there is no fear of accidentally falling off.

Furthermore, the fact that the head of the stopper bolt, the cap body made of synthetic resin, and the metal protective cover have a similar hexagonal shape, when adjusting the head position of the stopper bolt to adjust the steering angle, Even without removing the protective cover and cap body one by one, in the state of being fitted,
Since the head of the stopper bolt can be rotated in a predetermined direction using a wrench, etc., the steering angle adjustment work becomes very easy, and the entire head of the stopper bolt can be made as small as possible. Become.

"Embodiment" Hereinafter, the present invention will be described in detail with reference to an embodiment. The stopper structure according to the embodiment is basically similar to the conventional structure shown in FIG. A stopper bolt 2 having a synthetic resin cap body 7 fitted on a head 2a is attached to a nut 3 at a predetermined position of a knuckle arm 1 connecting the parts.
At the time of steering, the stopper bolt 2
The head 2a of the vehicle body is brought into contact with the stopper bracket 5 of the suspension link 4 on the vehicle body side, thereby limiting the rotation angle of the steering knuckle and restricting the steering angle of the front wheels. The point is that a metal protective cover 10 described below is fitted to the outside of the synthetic resin cap body 7.

In this embodiment, the cap body 7 made of synthetic resin is used.
Is formed in a hexagonal cylinder shape similar to the hexagonal head 2a of the stopper bolt 2 to cover the top surface and side surfaces of the head 2a.

This will be specifically described.
Is formed of a thin and tough metal plate such as a stainless steel plate or a spring steel plate having excellent wear resistance and rust prevention properties, and as shown in FIGS. 7
A hexagonal cylinder-shaped main body 11 covering the top surface and the side surface of the cap 7 in a similar manner to that of the cap 7, and at least two inwardly bent flat opposing side surfaces defining the hexagonal cylinder shape of the main body 11 are formed. A plurality of notches 12 are integrally formed, and the leading edge of each notch 12 is forcibly cut into the corresponding flat side surface of the synthetic resin cap body 7 from the outside.

Therefore, when the metal protective cover 10 is fitted, the main body 11 can be firmly fitted to the cap body 7 only by tightly covering the main body part 11 with the synthetic resin cap body 7. Becomes

Therefore, also in the stopper structure of the present embodiment, the head 2a of the stopper bolt 2 is brought into contact with the stopper bracket 5 of the suspension link 4 at the time of steering, thereby limiting the rotation angle of the steering knuckle, and It goes without saying that the steering angle can be regulated.

However, in such an operating state, the metal protective cover 10 is further fitted over the outside of the synthetic resin cap body 7 fitted on the head 2a of the stopper bolt 2. So, even if the head 2a of the stopper bolt 2 and the stopper bracket 5 rub under strong pressure,
Synthetic resin cap 7 with the metal protective cover 10
With this protection, there is no possibility that the cap body 7 is worn or damaged at an early stage and a hole is opened, so that the generation of unpleasant metal noise can be effectively prevented.

In this embodiment, fitting the metal protective cover 10 to the synthetic resin cap body 7 means that the metal protective cover 10 comes into contact with the stopper bracket 5 this time. In this case, the thickness of the metal protective cover 10 is made as thin as possible, and the resin cap 7 exerts a noise-reducing effect as a cushioning material because it is tightly fitted to the synthetic resin cap 7. You never have to worry about unpleasant metal sounds.

Further, the metal protective cover 10 is forcibly engaged with the plurality of notch claws 12 formed on the side surface of the metal protective cover 10 on the flat side surface of the synthetic resin cap body 7 so as to be fitted on the resin cap body 7. As a result, not only the assembling workability is extremely good, but also the state of being fitted to the cap body 7 is very strong, and there is no fear of accidentally falling off.

"Effects of the Invention" As described above, the stopper structure of the present invention is characterized in that a metal protective cover is further superimposed on the synthetic resin cap body fitted on the head of the stopper bolt and fitted. Even if the head of the stopper bolt and the stopper bracket rub against each other under strong pressure, the synthetic resin cap body will be worn and damaged early, and a hole will be opened, as in the past. Because there is no such thing
It has become possible for the first time to effectively prevent the generation of unpleasant metallic sounds.

In addition, in the present invention, when forming the notch on the metal protective cover, since the notch is formed on the flat side surface defining the hexagonal cylinder shape, the notch can be easily bent inward. Since it can be performed, it is excellent in productivity, and because the notch nail is cut into the corresponding flat side surface of the synthetic resin cap body, just fitting the metal protective cover on the outside of the synthetic resin cap body, Both will be easily assembled. Therefore, not only the workability in assembling becomes extremely good, but also the fitting state becomes very strong, and there is no fear of accidentally falling off.

Furthermore, in the present invention, the head of the stopper bolt, the synthetic resin cap body, and the metal protective cover have a similar hexagonal shape.
When changing the position of the head of the stopper bolt, it is possible to rotate the head of the stopper bolt in a predetermined direction using a wrench or the like without removing the protective cover or the cap body one by one, while keeping the fitted state. It will be possible,
There is an advantage that the steering angle adjustment work becomes very easy and the entire head of the stopper bolt can be made as small as possible.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a main part of a stopper structure according to an embodiment of the present invention, FIG. 2 is a sectional view showing an assembled state of the main part, and FIG. 3A is a conventional stopper mechanism in a steering device. FIG. 2B is a perspective view showing a part from one side, and FIG. 1 ... knuckle arm, 2 ... stopper bolt, 2a ...
... Same head, 3 ... Nut for fixing stopper bolt, 4
... Suspension link, 5 ... Stopper bracket, 6 ... Steering die rod, 7 ... Cap made of synthetic resin, 10 ... Protective cover made of metal, 11 ... Main body part, 12 ... Notch claw.

Continued on the front page (72) Inventor Atsushi Oshiro 51-Iwaicho, Hodogaya-ku, Yokohama-shi, Kanagawa Prefecture Inside Kato-Hatsujo Co., Ltd. (56) References , U) Jikken 46-34484 (JP, Y2) Jikken 53-50191 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] A stopper bolt having a synthetic resin cap fitted to a head is fixed to a predetermined portion of a steering knuckle, and the head of the stopper bolt abuts a stopper bracket on a vehicle body side during turning. In the stopper structure of the automobile steering device that regulates the steering angle of the wheel, the synthetic resin cap body is shaped like a hexagonal cylinder that covers the top surface and side surfaces of the head similar to the hexagonal head of the stopper bolt. A metal protective cover fitted on the synthetic resin cap body, and the metal protective cover has a hexagonal cylindrical shape similar to the synthetic resin cap body and covering the top surface and side surfaces of the cap body. A plurality of notch claws bent inward are formed on a flat side surface defining a hexagonal cylinder shape of the protective cover, and the leading edge of each notch claw is formed by a pair of a synthetic resin cap body. A stopper structure for a steering apparatus for an automobile, characterized in that the stopper structure is adapted to bite into a corresponding flat side surface.