JPH04173412A - Antiskid device for tire - Google Patents

Abstract

PURPOSE:To prevent the lateral dislocation of hooks, and to achieve the miniaturization and weight reduction of the entire device by pressedly fitting a stopper of a specific shape in the position where a tire antiskid body of a side rope is lockedly fitted, and by lockedly fitting the hooks of the tire antiskid body with the stopper between. CONSTITUTION:The tire antiskid body 10 that has been put on the tread surface 2 of a tire 1 is lockedly fitted via hooks 11, for instance, on the outside surface of the tire 1, and is tightened by an outer side-rope 15. In this case, a stopper 17 of a hard metal is previously pressedly fitted to the side rope 15 in the position where hooks 11 are lockedly fitted. And to the side rope 15 on both sides of the stopper 17, the hooks 11 of the tire antiskid body 10 are lockedly fitted. At that time, the side rope 15 is inserted into the open part 17a (not shown) of the stopper 17 and is pressedly fitted, and a slit 18 is formed in the stopper along its overall length in the lengthwise direction. Thus, even if a large load is exerted to the lockedly fitted parts of the side rope 15 and the hooks 11, the stopper 17 prevents the lateral dislocation of the hooks 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tire slip prevention device suitable for use in tires for heavy-duty vehicles, particularly light trucks.

[Conventional technology]

Conventionally, a ladder type device known as an anti-slip device for automobile tires has a plurality of tire anti-slip bodies formed into, for example, a flat band shape or a mountain shape, arranged in parallel at appropriate intervals. It has a structure in which hooks embedded in both longitudinal ends of the tire anti-slip main body are caulked and fixed to side ropes each having a connecting tool at both ends.

Fig. 12 shows the structure of the hook 3 of the conventional anti-slip main body of a tire, which is caulked to the side lobe 5. Two parts 4a and 4b are formed, and the caulked parts 4a and 4b are caulked to the side rope 5.

[Invention or problem to be solved]

In general, anti-slip devices used in tires for heavy-duty vehicles such as light trucks, trucks, and buses are subject to greater loads than anti-slip devices for passenger car tires, so the shape of the parts and Larger dimensions are used, making it difficult to make the entire device smaller and lighter.

In particular, in an anti-slip device for tires for heavy-duty vehicles, it is necessary to apply a huge crimping force to the crimped parts 4a and 4b of the hook 3, which are the fixing parts between the tire anti-slip body and the side rope. If this crimping force is not sufficient, the hook 3 may shift laterally while the vehicle with the anti-slip body mounted on the tire is running, which not only causes a drop in the performance required as a tire anti-slip device, but also causes the hook 3 to shift sideways. Abrasion of the attachment portion to the side rope 5, and eventually an accident of cutting the side rope 5, will occur, reducing durability.

In addition, in conventional tire anti-slip devices, the crimped parts 4a and 4b of the hook 3 of the tire anti-slip body are crimped to the side rope 5 with great force, so when replacing a worn tire anti-skid body with a new one, However, there are disadvantages in that a special tool is required to remove the caulked portions 4a and 4b of the hook 3, and the time required is long, and replacing the tire anti-slip body requires troublesome effort.

The present invention solves the above-mentioned problems and provides a tire that is compact and lightweight, has excellent durability, and allows easy replacement of the tire anti-slip body, and is particularly suitable for light truck tires. The purpose is to provide an anti-slip device.

[Means to solve the problem]

In order to achieve the above object, the present invention connects both longitudinal ends of tire non-slip bodies arranged in parallel at appropriate intervals to inner side ropes and In a tire slip prevention device that is attached to an outer side rope,
The inner side rope and outer site rope are made of non-stretchable synthetic fibers, and each of these side ropes has a circular body made of a hard metal plate at the position where the tire anti-slip body is fixed in the longitudinal direction. A stopper, which is a pair of ring-shaped bodies that have a notch along the entire length or are made of hard metal wire and has a notch in a part of each ring, is crimped by caulking, and the tire anti-slip body is attached with this stopper in between. The hook is secured by caulking.

[Effect]

In the tire anti-slip device of the present invention, the hard metal stopper held between the inner side rope and the outer side rope has the function of preventing the hook of the tire anti-slip main body from shifting laterally.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a front view of the front side of the tire showing an example of the tire slip prevention device of the present invention mounted on the tire, and FIG. 2 is a front view of the back side of the tire showing the mounted state.

The tire anti-slip main body 10 has a resistance of 1 per ground contact length of the tire 1.
~2 pieces are placed on the tread surface 2 of the tire 1 in parallel at intervals. The appropriate number of tire slip prevention devices 10 is, for example, 13 to 14 for a 750R16 size tire.

As shown in FIG. 3 (side view) and FIG. 4 (developed plan view), the tire anti-slip main body 10 described above has a mountain shape in which both longitudinal ends are bent in the same direction,
It is integrally molded by covering both sides of a reinforcing material (not shown) such as a tire cord with a rubber-like elastic material such as rubber or synthetic resin.
A pair of U-shaped hooks 11 made of a round steel material combined with a reinforcing material and embedded in a rubber-like elastic material are attached to both ends in the longitudinal direction, and a spike pin 1 is attached to the front side (ground surface side).
2 are buried.

The anti-skid main body 10 placed on the tread surface 2 of the tire 1 is fixed on the front side surface of the tire 1 through a hook 1 and tightened by an outer side dope 15, as shown in FIG. As shown in FIG. 2, the tire l is fixed on the backside side surface by an inner side rope 16 fixed via a hook 11.

The above-mentioned outer site rope 15 and inner side rope 16 are made of cords or braids made of non-extensible synthetic fibers, such as polyester, polyamide (66 nylon), polyvinyl, polyethylene, etc.
Connectors (not shown) are attached to both ends of each side rope 15,16.

As shown in a partially enlarged view in FIG. 5, each side rope 15, 16 is crimped with a hard metal stopper 17 in advance at the position where the hook 11 of the tire anti-slip body 10 is fixed. The hooks 11 of the tire anti-slip body 10 are fixed to the side ropes 15 and 16 on both sides of the stopper 17 by caulking them.

As shown in FIG. 6, the stopper 17 is made of a hard steel plate having an appropriate thickness or a metal having equivalent hardness (for example, SK steel, chromoly steel, stainless steel) from the opposite distance between the hooks 11. Slightly short length and side rope 1
5.16, cut into a width slightly shorter than the circumference, and bent into a semi-cylindrical shape around the longitudinal direction to form an opening 17a between the side edges along the longitudinal direction. do. The opening width of this opening portion 17a is the width of the side rope 1
It is approximately the same as the diameter of 5.16.

Cylobes 15.
16 is inserted and then crimped by applying a predetermined caulking force to form a cylindrical body with notches 18 formed over the entire length in the longitudinal direction, as shown in FIG.

In addition, the outer side rope 15 has hook fixing positions of the adjacent tire anti-slip bodies 10 at intermediate positions between them.
Hook 1 for hanging and fixing the mounting band 20 described later
9 is caulked (see Figure 1).

When installing a tire anti-slip device made up of the above-mentioned components onto a tire, follow the steps below.

First, the tire anti-slip body lO is placed over the tread surface 2 of the tire 1 along the circumferential direction. Next, the inner side lobes 16 disposed on the back side of the tire 1 are connected in a ring shape by tying together the connectors at both ends. Next, the connectors at both ends of the outer side rope 15 placed on the front side of the tire l are tied together to form a ring shape, and then hooked to a separately prepared mounting band 20 made of a rubber-like elastic material. 19 is hooked and stopped, and a tensile force due to the elasticity of the attachment band 20 is applied to the outer site rope 15.

As a result, the tire anti-slip main body 10 is attached to the tread surface 2 of the tire l in a tightened state.

The outer side ropes 15 and inner side lobes 16, which are placed on the front and back sides of the tire l on which the tire anti-slip device is attached, are connected to the ten hooks 11 of the tire anti-skid body, with the sides of the hard metal stopper 17 in between. The stopper 17 is crimped and crimped to either the inner peripheral surface having a larger area than the hook 11 or the outer peripheral surface of each side rope 15,16.

Therefore, even if a strong tensile force is applied to each side rope 15, 16, the stopper 17 will not be pulled out.

Therefore, even if the fixed portions of the side ropes 15, 16 and the hooks 11 of the tire anti-skid body 10 receive a large load while the vehicle with this tire anti-slip device mounted on the tire 1 is running, Stopper 17 is hook 1
This will serve the function of preventing lateral displacement of 1.

In this way, since the hook 11 can be prevented from shifting laterally by the stopper 17, each side rope 15.1
When fixing the hook 11 to the hook 6, there is no need to apply a strong crimping force as in the conventional case.

Next, the results of tests conducted to confirm the effects of this invention will be explained.

Eight-braided robe made of polyester fiber with a diameter of 7 mm (applied to anti-slip devices for passenger car tires)
When the hook 3 in Fig. 12 is swaged and a longitudinal tension is applied to the rope while keeping the hook 3 fixed, when the rope is pulled out (corresponding to the horizontal displacement of the hook 3), the tension is was approximately 180 kg.

In addition, when the above-mentioned rope with a diameter of 10 mm was crimped with the hook 3 enlarged for a 10 mm lobe and a tensile test similar to that described above was performed, the tensile force when the lobe was pulled out was approximately 23 mm.
It was 0 kg.

A stopper 17 made of hard steel is caulked to an eight-braided rope made of polyester fiber with a diameter of 10 mm (applied to anti-slip devices for truck tires), and the stopper 17 is held in a fixed state and the rope is lengthened. When a tensile force is applied in the horizontal direction, when the lob pulls out (stopper 17
The tensile force (corresponding to the lateral shear) was approximately 370 kg.

From the above test results, it can be seen that the stopper 17 is caulked to the lobe with a lateral slip resistance force that is approximately 100 kg or more higher than that of the hook 3.

8 and 9 show other embodiments of the stopper 17.

The stopper 17 of this embodiment is made by bending a hard metal wire having an appropriate diameter and length into a U-shape at right angles in the same direction at both ends of the straight portion, as shown in FIG.
An opening part 17a is formed between the opposite sides of the character part, and the opening width of the opening part 17a is defined as the side lobe 1.
It is approximately the same as the diameter of 5.16.

The side rope 15 is attached to the opening 17a of this stopper 17.
．． 16, and apply a predetermined force to the U-shaped portions at both ends to swage. As shown in Figure 9, the U-shaped portions deform into a pair of rings, and the space between the tip of each ring and the straight portion The side ropes 15 and 16 are crimped with a notch 18 formed therein.

FIG. 10 and FIG. 11 show still other embodiments of the stopper 17.

The stopper 17 of this embodiment is obtained by bending the ends of the U-shaped portions of the stopper 17 shown in FIG. 8 so as to face each other to form portions parallel to the straight portions.

〔Effect of the invention〕

As explained above, according to the present invention, when a vehicle equipped with a tire anti-slip device is running, a strong load is applied to the fixed portion between the sight rope of the tire anti-slip device and the hook of the tire anti-slip main body. Even if the hook is hit, the hook will only shift laterally, so the shape and shape of the parts at this fastening part will
There is no need to increase the size, and the fact that the side rope material is a relatively lightweight synthetic fiber makes it possible to make the entire device smaller and lighter, which is especially desirable when applied to light truck tires. Tire anti-slip device is available.

Further, according to the present invention, the work of attaching the stopper to each side rope can be done very easily and in a short time, thereby simplifying the manufacturing process of the tire slip prevention device and improving the work efficiency.

Further, according to the present invention, the crimping force of the hook of the tire non-slip body against the side rope can be made weaker than before, so when replacing a worn tire non-slip main body with a new one, the hook can be removed and reinserted. The labor required for installation is reduced, and workability when replacing parts is improved.

Furthermore, according to this invention, even if the vehicle travels over a long distance,
To obtain a tire slip prevention device with excellent durability without causing accidents such as abrasion or cutting at a hook fixing portion of a side rope.

[Brief explanation of drawings]

Fig. 1 is a front view of the front side of the tire showing the tire anti-slip device of the present invention installed on the tire, Fig. 2 is a front view of the back side of the tire shown in Fig. 1, and Fig. 3 is a half of the tire anti-slip main body. FIG. 4 is an expanded front view of FIG. 3, FIG. b) is the fifth
FIGS. 6 and 7 are respectively perspective views showing the stopper and the state in which the stopper is crimped onto the side rope. FIGS. 8 and 9 are respectively other examples of the stopper and this stopper. FIGS. 10 and 11 are perspective views showing still another example of the stopper and a state in which the stopper is crimped to the side rope, and FIG. 12 is a perspective view of the conventional side rope. It is a front view showing the fixed part between the rope and the hook of the tire non-slip main body. In the figure, 10 is the tire non-slip main body, 11 is the hook, and I5
1 is an outer side rope, 16 is an inner site rope, 17 is a stopper, and 18 is a notch.

Claims (1)

[Claims] A tire slipper in which both longitudinal ends of tire anti-slip bodies arranged in parallel at appropriate intervals are fixed to an inner side rope and an outer side rope through hooks embedded in the tire anti-slip bodies, respectively. In the stopping device, the inner side rope and the outer side rope are made of non-stretchable synthetic fibers, and each side rope has a cylindrical body made of a hard metal plate material at a position where the tire slip prevention body is fixed. A stopper, which is a pair of ring-shaped bodies made of a hard metal wire and has a notch along its entire length in the longitudinal direction, is crimped by caulking, and the tire slips with this stopper in between. A tire slip prevention device characterized in that the hook of the stop body is fixed by caulking.