JPH04967Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rubber tire anti-slip device used in place of metal chains.

Rubber tire anti-slip devices can be roughly divided into two types: net type A and ladder type B, as shown in FIG. Net type A is superior in that it has good braking performance in vertical, horizontal, and diagonal directions, and there is not much lateral vibration.
Since it is connected all around, it has the disadvantage that it is difficult to install (it is done by jacking it up).

On the other hand, ladder type B has good braking performance in the circumferential direction of the tire, but its braking performance in the lateral direction is not good, causing skidding or the ladder body flipping over while driving, and also has the disadvantage of large vibrations. be. However, since the locking rope can be separated, the tire can be easily attached by hand from behind the tire with the locking rope separated, without having to jack it up.

In view of the current situation, the present invention aims to provide a product on the market that has the advantages of both net type A and ladder type B, and its features include a bifurcated leg lug and a bifurcated neck lug. The former has a relatively larger leg length than the latter, so that the intersection of the leg lug and neck lug is slightly shifted from the center line of the tire tread width toward the neck lug. At the same time, an auxiliary lug is provided on the part of the leg lug that is the tire tread width end so as to protrude outside the leg, and the part that is the tire tread side has a large number of long elliptical shapes that are parallel to the tire width direction. In addition to providing a protrusion, the relationship between the leg lug and neck lug of each anti-slip device is adjusted by connecting the anti-slip device with the above structure to two locking ropes arranged parallel to each other across the width of the tire via a metal fitting. This is due to the fact that it was installed in a reverse position.

An example of implementing the present invention will be described below based on the drawings.

Figure 2 shows the single anti-slip tool 1 used in this invention.
(hereinafter referred to as the unit) is a plan view, and FIG. 3 is a front view of the same, and is made of a rubber material with a constant thickness (approximately 7 mm). As seen in the above drawing, the unit 1 includes two leg lugs 1a, 1b and two neck lugs 1c, 1.
d, and the edge of each lug is slightly curved inward from near the corner of the width of the tire tread.

On the other hand, the leg lugs 1a, 1b and the neck lugs 1c, 1d are formed such that the former is large and the latter is small, so that the intersection P of the leg lugs 1a, 1b and the neck lugs 1c, 1d is equal to the tire tread width l. The auxiliary lugs 2a and 2b are arranged near the tire tread width ends of the respective leg lugs 1a and 1b so as to protrude outward from the leg lugs 1a and 1b. ,
In addition, there are many protrusions K on the entire surface of the tire tread side.
is provided.

On the other hand, 3 is a protrusion provided on a curved surface of each lug from the tire tread width end to the locking portions 1'a, 1'b, 1'c, and 1'd at each lug end; A keyhole is provided in each of the locking portions 1'a, 1'b, 1'c, and 1'd, and is secured to the locking rope described below via a locking metal fitting. . Here is the protrusion K
is formed into a small elongated ellipsoid parallel to the width direction of the tire, while the protrusion 3 is formed into a relatively large elongated ellipsoid perpendicular to the above.

Note that 5a, 5b, and 5c are notches provided at arbitrary locations on each leg lug and neck lug so that spike metal fittings can be attached as appropriate.

FIG. 4 is a plan view of the above-mentioned unit 1 fastened using a fastener 8 between the fastening ropes 6 and 7 parallel to each other across the width of the tire. 1 is arranged such that the relationship between the leg lugs 1a, 1b and the neck lugs 1c, 1d are alternately reversed.

In this embodiment, one locking rope (7 in the illustrated example) is cut at an intermediate position in order to facilitate attachment to the tire, and a connecting fitting 9 (male type) is attached to the opposite cut end. 10 (female type) is installed. In this figure, the locking rope 6 is positioned on the inside of the tire during installation, whereas the locking rope 7 is positioned on the outside of the tire, that is, the locking rope 7 is positioned on the outside of the tire. With the connecting fittings 9 and 10 of the locking rope 7 removed, place the locking rope 6 on the ground contact surface of the tire, and position the locking rope 6 on the inside of the tire and the locking rope 7 on the outside of the tire.
After that, the connecting fittings 9 and 10 are locked together, and then the locking fittings 11a, 11b, 11'a, and 11'b at both ends of each of the locking ropes 6 and 7 are engaged and fixed. . The method of fastening these fastening metal fittings is the same as the conventional ones. In addition, 12 is a spike metal fitting.

FIG. 5 shows another example, and in the above embodiment, only the outer locking rope 7 was cut for convenience in hanging the tire, but in this example, the middle rope including the locking rope 7 is cut. It is cut at the position,
When installing it, place the left and right parts of the divided locking ropes 6 and 7 between the tire's ground contact surface,
First, connect the separated parts on the inside and outside of the tire, and then hang the tire in the same way as in the previous example.

The present invention is constructed as described above, and the fact that the leg lugs 1a, 1b obliquely intersecting the tire tread surface and the neck lugs 1c, 1d perpendicularly intersecting the tire tread surface are alternately arranged is similar to that of the conventional net type and ladder type. The characteristics of the tire are that it has great braking performance in the same direction, diagonal direction, and lateral direction, and there is no lateral vibration. Furthermore, since one intermediate portion of the locking rope can be cut off regardless of the unit 1, tire hanging can be carried out as easily as with the ladder type.

On the other hand, the fact that the intersections P of the leg lugs 1a, 1b and the neck lugs 1c, 1d are alternately slightly shifted in opposite directions from the center line of the tire tread width means that the discontinuities in the same direction are smaller. Therefore, the vibration becomes smaller.

On the other hand, since the leg lugs 1a, 1b and neck lugs 1c, 1d have a larger open leg area than the net type, the effect of blocking snow is extremely large, and skidding can be more effectively prevented. Become. In addition, the bending phenomenon that occurs in the ladder shape due to the spread legs is automatically prevented, and it is advantageous that a bending portion that fits with the tire circumferential side is provided in advance at the corner portion of the tire tread. This makes it extremely easy to hang (mount and tighten) the tires.

In addition, auxiliary lugs 2a, 2b are attached to the leg lugs 1a, 1b.
In addition to providing a large number of protrusions K on the entire surface of the tire tread side, the braking performance is further improved. The notches 5a, 5b, and 5c provided at 1d are extremely effective in facilitating attachment of the spike fitting 12 and effectively preventing the spike from slipping or coming off.

[Brief explanation of the drawing]

Figures 1A and B show conventional products, Figure 2 is a plan view of the anti-slip device used in the present invention, and Figure 3
The figure is a sectional view of the same, FIG. 4 is an overall plan view of the product of the present invention, and FIG. 5 is another example. 1... Anti-slip tool alone, 1a, 1b... Leg lugs, 1c, 1d... Neck lugs, 2a, 2b... Auxiliary lugs, 4... Key holes, 6, 7... Locking ropes, 8
……Fasteners.

Claims (1)

[Claims for Utility Model Registration] (1) It has an X-shape consisting of a bifurcated leg lug and a bifurcated neck lug, and the former has a leg lug and neck lug that are made by making the leg length relatively larger than that of the latter. In addition to forming a single piece of rubber with the intersection part slightly shifted toward the neck lug from the center line of the tire tread width,
An auxiliary lug is provided in the part of the leg lug that extends outside the leg at the tire tread width end, and a large number of elongated elliptical protrusions parallel to the tire width direction are provided in the part that becomes the tire tread side. In addition to tightening the anti-slip device, the anti-slip device can be inserted between two locking ropes arranged parallel to each other across the width of the tire, so that the relationship between the leg lugs and neck lugs of each anti-slip device can be reversed. A rubber tire anti-slip fitting characterized by being installed in such a way that (2) The rubber tire anti-slip device according to claim 1, which is characterized in that the corner portion of the tire tread is slightly curved toward the inside of the tire.