JPH04173411A - Antiskid device for tire - Google Patents

Abstract

PURPOSE:To reduce the friction with a hook, vibration, stresses, or the like to be caused in the outer side-rope at the fitting part of a band hook by fitting a spacer softer than the band hook in a prescribed position of the outer side- rope, and by fitting the band hook on the outer circumferential surface of the spacer. CONSTITUTION:A tire antiskid body 10 is put on in parallel with the tread surface 2 of a tire 1. And an outer side-rope 15 is lockedly fitted to the tread hooks 11 provided on the outside surface of the tire 1 in the tire antiskid body 10. And, in the intermediate position between mutually adjacent tread hooks 11 of the outer side-rope 15, a band hook 18 for clamping an expandable band 20 is fitted. In this case, the outer side-rope 15 is inserted into pipe-shaped spacers 17 consisting of metallic material or the like which are softer than the band hook 18, and the spacers are pressedly fitted in the fitting positions of the band hooks 18. And each band hook 18 is fitted on the outer circumferential surface of the spacer 17 with a relatively weak tightening force.

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.

[Conventional technology]

Conventionally, among anti-slip devices for automobile tires, ladder type devices include a plurality of tire anti-slip bodies made of a rubber-like elastic material formed into a flat band shape or a mountain shape and arranged in parallel at appropriate intervals. The tread hooks embedded in both longitudinal ends of these tire anti-slip bodies,
A structure is known in which the inner side rope and the outer side rope are fixed by caulking, and band hooks for hanging an elastic band are attached between adjacent tread hooks of the outer side rope by caulking. There is.

[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 stronger than anti-slip devices used in tires for passenger cars (light-duty vehicles). It will take a load.

For this reason, when the above tire slip prevention device is used on tires for heavy-duty vehicles, the attachment part of the band hook crimped to the outer side rope may be affected by stress due to severe expansion or repeated loads, resulting in premature wear and tear. Accidents such as damage and cutting occurred, which led to a decrease in durability and a shortened service life.

This invention was made for the purpose of solving the above problems.

[Means to solve the problem]

In order to achieve the above object, the present invention provides inner side ropes that are connected to both longitudinal ends of tire non-slip bodies arranged in parallel at appropriate intervals via tread hooks embedded in the tire non-slip bodies. and a tire slip prevention device in which an outer side rope is fastened, and between adjacent tread hooks of the outer side rope, a clamp hook for hanging an elastic band is attached, and the band hook attachment position of the outer side rope is A spacer that is softer than the band hook is attached to the spacer, and a band hook is attached to the outer peripheral surface of the spacer.

[Effect]

In the tire slip prevention device of the present invention, the load at the band hook attachment portion of the outer side rope acts on the outer site rope via the spacer that is softer than the band hook, so that the load is generated on the outer site rope at the band hook attachment portion. Friction with the hook, vibration, stress, etc. are reduced compared to when the load is directly applied.

〔Example〕

Embodiments of the present invention will be described below with reference to 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 bodies 10 are placed over the tread surface 2 of the tire 1 in parallel at intervals of 1 to 2 pieces per ground contact length of the tire 1.

The number of tire anti-slip bodies 10 is, for example, 100.
For an 0R20 size tire, 14 to 15 pieces is appropriate.

As shown in FIG. 3 (side view) and FIG. 4 (developed plan view), the tire anti-slip main body 10 has a mountain-shaped structure 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 tread hooks 11, which are connected to a reinforcing material and embedded in a rubber-like elastic material, are attached to both longitudinal ends, and spike pins 12 are embedded in the surface side (tread surface side). .

As shown in FIG. 1, an outer side rope 1 is attached to the tread hook 11 embedded in one longitudinal end of the tire anti-slip body 10 and disposed on the front side of the tire 1.
5 It is secured by caulking, and the outer side rope 15
At an intermediate position between adjacent tread hooks 11,
Attachment is performed by caulking a band hook 18 for hanging an elastic band via a spacer 17, which will be described later.

Tire anti-slip body 1 located on the back side of tire l
As shown in FIG. 2, an inner side rope 16 is fixed to a tread hook 11 embedded in the other longitudinal end of the inner side rope 16 by caulking.

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

The attachment intervals of the tread hooks 11 caulked to the inner side rope 16 are set to a predetermined length depending on the size of the tire 1.
The tread hook 11 of No. 5 is connected to the inner side rope 16.
It is caulked with an installation interval longer than the hook interval.

With this setting, when installing the tire slip prevention device on the tire 1, the outer side rope 15
Due to the extra length, the tire slip prevention body 10 is shifted toward the inner side rope (2) Since there is also an extra length of the inner side rope 16, it is necessary to tie the connector of the inner side rope 16. Further, the subsequent work of tying the connectors of the outer side ropes 15 can be performed easily as well.

The detailed structure of the attachment part of the band hook 18 of the outer side rope 15 is as shown in FIGS. 5 and 6, and the axial length (width) exceeding the diameter of the band hook 18 made of round steel material and the outer side A pipe-shaped spacer 17 made of a soft metal material and having an inner diameter that allows the rope 15 to be inserted is inserted into the outer side rope 15 and crimped and crimped at the attachment position of the band hook 18, and on the outer peripheral surface of this spacer 17, The band hook 18 is attached by caulking with a relatively weak tightening force. The metal material used as the spacer 17 is most preferably an aluminum pipe, but brass or copper pipes may also be used.

In addition, in the tire slip prevention device of this embodiment, each tread hook 11 of the outer side rope 15 and the inner side rope 16 is connected to each site rope 15, 16.
It is attached by sandwiching the stopper 19 which is crimped and crimped. The material of this stopper 19 is preferably a soft metal pipe like the spacer 17, but a hard metal material such as a hard steel plate is formed into a cylindrical shape and attached to each side rope 15, 16. You can close it.

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 10 is placed over the tread surface 2 of the tire 1 along the circumferential direction. Next, the inner side rope 16 placed on the back side of the tire 1 is connected in a ring shape by tying 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 1 are tied together to form a ring shape, and then an elastic band 2 made of a rubber-like elastic material prepared separately is attached.
0 on the band hook 18, and then attach the elastic band 2.
The tensile force due to the spring elasticity of 0 is applied to the outer side rope 15.
and tighten.

As a result, the tire anti-slip body 10 is attached in close contact with the tread surface 2 of the tire 1.

Note that the stretchable band 20 is not limited to the illustrated ring shape, but may also be one in which arm portions extend radially from the ring portion.

The anti-slip device installed on the tire 1 in this way can prevent the outer side rope 15 and the band hook 18 from being damaged even if the attachment portion between the outer side rope 15 and the band hook 18 receives a large load or vibration while the vehicle is running. Since a soft spacer 17 that is wider than the diameter of the band hook 18 is interposed between the band hook 18 and the band hook 18, friction, vibration, stress, etc. from the band hook 18 applied to the outer side rope 15 are directly absorbed. This is comparatively reduced when the load is applied via the band hook 18 itself.

Furthermore, even if the attachment portion of the tread hook 11 between the outer side rope 15 and the inner side rope 16 receives a large load, each tread hook 11 is attached with the stopper 19 in between, so that the tread hook 11 may shift laterally. This is prevented by the stopper 19.

According to the results of a comparative test of the tire slip prevention device of the present invention and a conventional tire slip prevention device, the following results were obtained.

When a 10-ton truck was driven with a 100% load on a snow-free road (at a speed of 40 to 60 km/h), tires equipped with conventional anti-slip devices showed that the outer side of the truck had fallen after traveling 74 km. It was confirmed that in tires in which the band hook attachment portion of the rope was cut or the tire slip prevention device of the present invention was installed, no damage occurred to the outer side rope even after traveling for 600 km.

In the above example, a case was explained in which a band hook made of round steel material was used. However, when a band hook made of flat steel material is used, a synthetic resin film is wound around the outer rope instead of a soft metal material as the spacer material. may also be used.

〔Effect of the invention〕

As explained above, according to the present invention, even if a strong load or vibration is applied to the attachment part between the outer side lobe and the band hook of the tire anti-slip device attached to the tire, the outer side rope can be quickly removed. Since there is no possibility of damage or cutting, the durable life can be significantly extended, and a tire slip prevention device suitable for application to tires for heavy-duty vehicles can be obtained.

[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. 4 is an exploded front view of FIG. 3, FIG. 5 is an enlarged front view of the attachment part of the outer side rope and band hook, and FIG. 6 is a side view of FIG. 5. be. In the figure, 10 is the tire anti-slip body, 11 is the tread hook, 15 is the outer side rope, 16 is the inner side lobe, 17 is the spacer, 18 is the band hook, 2o
is a stretchable band.

Claims (1)

[Claims] An inner side rope and an outer side rope are fixed to both longitudinal ends of the tire non-slip bodies arranged in parallel at appropriate intervals via tread hooks embedded in the tire non-slip bodies, respectively, and the outer side In a tire slip prevention device in which a band hook for hanging an elastic band is attached between adjacent tread hooks of a rope, a spacer softer than the band hook is interposed between the outer side rope and the band hook. A tire slip prevention device characterized in that it is provided with a tire slip prevention device.