JPH02162106A - Tire chain device - Google Patents

Abstract

PURPOSE:To automate the installing work by connecting circular arc form of segments with U-shape section responding to the outline of the tire with joints responding to the circumferential length of the tire, and making the ends of neighboring segments at the joints geared to each other, in the above- captioned device for automobile. CONSTITUTION:A tire chain device is developed and arranged on the ground, and the tire 2 is rotated and moved in the direction of the arrow to gear to the U-shape section of gearing part of a segment 1. As a result, the inner surface of the side wall of the U-shape section of segment 1 is geared with the side surface of the tire, and each segment 1 is bent at the position of each joint 1a following the tire rotation. Consequently, the inner sides of the ends 1h of the neighboring segments approach each other, the tip of a pawl 1b is geared to the connecting pin 1f of the neighboring segment 1, and the segments are fixed in the form along the outer formation of the tire. In such a way, the segments can be installed and fixed to the outer periphery of the tire automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application] This invention relates to a device used to prevent tires of automobiles from slipping.

[Prior art]

Among anti-slip devices that are generally used to prevent tires from slipping on automobiles and the like, chain-type anti-slip devices are installed by winding the chain around the outer circumference of the tire and connecting both ends of the chain.

In addition, as a method of attaching from the side of the tire, there is an integrated anti-slip device with anti-slip claws arranged radially around the outer periphery of a disc, and the anti-slip device is installed by being pushed in from the side of the tire.

[Problem that the invention seeks to solve]

The first chain method is difficult to attach as it is because the ground contact part of the tire gets in the way, so the following method is used to attach it.

(1) Lay the chain on the ground in advance, move the car body to an appropriate position on the chain, and attach it.

(2) Push up the car body with jacks to raise the tires off the ground and install them.

These methods have the disadvantage that they are complicated and take a long time to install.

The second type of tire, which is installed from the side, does not require jacking up, but when installing it, the hub cover must be removed and installed using a special jig, which is a little complicated to install, and it has to be placed over the tire. Larger due to its integrated structure,
It is inconvenient to carry.

It also had the disadvantage of being expensive.

[Means for solving problems]

In order to solve the above-mentioned drawbacks, the present invention automatically attaches the anti-slip device by laying a tire anti-slip device on the ground in advance and stepping on it while moving, without moving the vehicle body or increasing the jackness of the vehicle body. The purpose is to provide a relatively inexpensive tire slip prevention device that enables
Specific means will be explained using examples.

〔Example〕

FIG. 1 is an example of the present invention, and is a side view showing the entire tire slip prevention device.

1 is a segment, which has an arcuate frame structure that follows the outer shape of the tire, and each segment is connected at the outer circumferential side by a joint 1a, and can swing about the connected portion as a fulcrum.

FIG. 2 is an enlarged side view of one of the segments, showing a claw tb for joining adjacent segments on the inner circumferential side, a spring lc for holding the joint, a fixing pin Id for fixing the spring lc, It consists of a fulcrum le of the claw 1b and a connecting pin 1f that engages with the claw 1b.

Figure 3 is a sectional view taken along line A-A of the segment shown in Figure 2. Under normal conditions, the segment is narrower than the cross section of the tire, and when pushed in from the outer periphery of the tire, it opens outward and fits into the tire. Possesses elasticity to grip.

FIG. 4 shows the process of installing the tire 2, in which a tire anti-slip device is placed on the ground in advance, and as the tire 2 is rotated in the direction of the arrow, the hook segments are fitted to the tire 2 in sequence. The inner circumferential sides of adjacent segments are close to each other, and the claw 1
The tip of b hits the connecting pin if of the adjacent segment and opens, and when it approaches further, the connecting pin if engages and connects with the claw 1b.

In this way, when the tire 2 rotates once, the mounting is automatically completed.

In addition, each segment needs to have enough rigidity that it will not be deformed and become impossible to connect when the claw 1b and the connecting bottle 1 are engaged with each other.

〔Effect of the invention〕

The anti-slip device can be automatically attached to the tires simply by laying the tire anti-slip device on the ground in advance and moving the vehicle body without moving the vehicle body or jacking up the vehicle body.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the entirety of the present invention. FIG. 2 is an enlarged side view of one of the segments. FIG. 3 shows a cross-sectional view of the segment shown in FIG. 2 along line A-A. FIG. 4 is a diagram illustrating the installation process. Code number table 1...Segment 2...Tire 1a...Joint 1b...Claws lc...Spring 1d...Fixed bottle 1e...Fulcrum 1r...combined bin

Claims (2)

[Claims] (1) The cross section is U-shaped, the inside has a curvature that follows the outer shape of the tire, and the outer periphery has an anti-slip function, and when fitted to the tire, it has elasticity that has the power to grip both sides of the tire. In the case where the provided arc-shaped segments are connected in a row on the outer circumferential side of the arc end portion to form a single body, and each segment is swingable around the connection portion, and both ends are joined to form a circular shape, The structure is equipped with a connecting mechanism that automatically activates and connects adjacent segments when their inner circumferential sides approach each other, and when attached to a tire, it is laid out in a straight line on the ground, and the tire is stepped on from the end while the vehicle body is moved. By moving the segments, the segments fit into the tire in sequence, and the coupling mechanism operates to automatically couple the inner peripheral sides of adjacent segments to enable installation. Device. (2) In the tire slip prevention device according to claim 1, the intermediate segment is not provided with a coupling mechanism,
A tire anti-slip device with a connecting mechanism only on both end segments.