JP2901751B2 - Mounting band for tire anti-slip device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire anti-skid device, and more particularly to a mounting band suitably used for a heavy-duty vehicle anti-slip device.

[Conventional technology]

Conventionally, as this type of mounting band, for example,
The thing shown in FIG. 7 described in Japanese Patent Application Laid-Open No. 64-28011 is known.

In this mounting band, an annular connecting portion 1 and an arm portion 2 extending radially from the connecting portion 1 are integrally formed of an elastic material such as rubber, and a tip end of the arm portion 2 is provided with a tire slip prevention device (not shown). The main body has a structure in which a hook hole 3 is formed to be hooked to a mounting bracket locked to the main body.

[Problems to be solved by the invention]

When the connecting portion 1 and the arm portion 2 of the mounting band are integrally formed only of an elastic material such as rubber, the fastening force to the body of the tire anti-skid device is weak, and the durability is limited. Therefore, the above-mentioned publication proposes that a reinforcing material may be embedded around the hook hole 3 and along the circumferential direction of the connecting portion 1.

However, a reinforcing material buried along the periphery of the hook hole 3 and the circumferential direction of the connecting portion 1 can provide a certain degree of effect in a non-slip device for a tire for a lightly-loaded vehicle such as a passenger car,
In a non-slip device for tires for heavy-duty vehicles such as trucks, buses, and light trucks, a stronger vibration and load are applied than in a non-slip device for tires for light-duty vehicles, so that the arm 2 of the mounting band is The fatigue limit is reached and the durability life is shortened. For this reason, it is necessary to increase the cross-sectional area of the arm 2, and in this case, the extension of the arm 2 becomes too small, and a large force is required at the time of attaching and detaching.

The present invention has been made to solve the above problems.

[Means for solving the problem]

In order to achieve the above object, according to the present invention, a ring portion in which an outer surface of an annular non-extensible reinforcing material is covered with a rubber-like elastic material, and extends radially outward at a circumferential interval from the ring portion. An arm band made of a rubber-like elastic material connected to a hook hooking portion having a hook hole at a tip thereof which is hooked to a band hook of the tire anti-slip body, the mounting band for a tire anti-slip device, Each of the arms has an elongation of 40% or less when the hook hole of the hook hooking portion is hooked on the band hook of the tire anti-slip body, and a tensile stress generated on each arm of 20 kg. / c
m ² or less, and not extend around at least around the hook hole of the hook hook and at least around the hook hole in the longitudinal direction of the neck where the hook hook connects to the arm. A non-extensible reinforcing material attached to the non-extensible reinforcing material of the ring portion is embedded in the base portion where the arm portion branches off from the ring portion, while the elastic reinforcing material is embedded.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a front side of a tire, showing a state in which a tire antiskid device 10 using a mounting band 20 of the present invention is mounted on a tire 30.

The tire antiskid device 10 of the figure is of a ladder type, and the antiskid body 11 covered on the tire 30 is formed in a mountain shape by a material in which both sides of a reinforcing material such as a tire cord are covered with rubber, synthetic resin or the like. The tread hooks 12 are embedded at both ends in the longitudinal direction. The non-slip body 11 is arranged in parallel so as to cover the tread surface 31 of the tire 30 at appropriate intervals, and the tread hook 12 arranged on the front side of the tire 30 sandwiches the stopper 13. The outer side rope 14 is fixed by swaging,
At an intermediate position between the tread hooks 12 adjacent to the outer side ropes 14, a band hook 15 is attached by caulking.

Although not shown, an inner side rope is similarly fixed to the tread hook arranged on the rear side surface of the tire 30 by caulking the stopper. These outer side ropes 14 and inner side ropes are
It is made of non-extensible synthetic fibers such as polyester and polyamide, and a connecting member 16 is attached to both ends of each side rope.

The mounting band 20 has an annular ring portion 21 having an appropriate diameter.
An arm 23 extending radially outward at a predetermined circumferential interval from the ring 21; a hook engaging portion 24 connected to the tip of the arm 23; and an intermediate portion between the arms 23 in an annular shape. And an auxiliary ring portion 27 that is connected to the main body. The main structure of the auxiliary ring portion 27 is shown in FIGS. 2 and 3.

The ring portion 21 has a non-extensible reinforcing material 22 such as a tire cord, a cable wire, or another metal wire material joined in a ring shape, and the outer surface thereof is covered with a rubber-like elastic material such as rubber or synthetic resin. When a tire cord is used, it is preferable to use 4 to 7 wires having a breaking strength (per wire) of 30 kg, and to use one wire having a diameter of 4 mm when using a cable wire.

The arm portion 23 is formed of a rubber-like elastic material such as rubber or synthetic resin, and its cross-sectional area and length are added to the arm portion 23 when the tire antiskid device 10 is mounted on the tire 30. The following conditions are set based on the applied tensile force.

That is, depending on the physical properties of the rubber-like elastic material which is a material of the arm portion 23, elongation of 40% or less, preferably 30% or less, the tensile stress is 20 kg / cm ² or less, preferably 10 kg / cm ²
Select the shape and dimensions as follows.

The hook hooking portion 24 is formed of a rubber-like elastic material of the same material as that of the arm portion 23, but is formed around the hooking hole 25 provided at the center thereof and between the hook hooking portion 24 and the arm portion 23. A non-extensible reinforcing material 26 is embedded in the length direction of the connecting portion (neck portion) 23a. As shown in FIG. 4, the non-extensible reinforcing member 26 is wound into a loop having both ends extending radially outward, for example, using a tire cord.
The extension 26a is arranged around the hook hole 25, and the extending both ends 26b are arranged in the length direction of the neck 23a. Here, the extended both ends 26b of the non-extensible reinforcing member 26 are unnecessary when used under a low tensile force and elongation.

FIG. 5 shows another example of the non-extensible reinforcing member 26, in which a metal ring is arranged around the hook hole 25 as a loop portion 26a, and a tire cord assembled to the metal ring is extended at both ends.
26b is arranged in the longitudinal direction of the neck 23a.

The auxiliary ring portion 27 is formed of the same rubber-like elastic material as the arm portion 23. The auxiliary ring portion 27 is a preferable member for suppressing the vibration of the arm portions 23 and the excessive expansion of the interval between the arm portions 23, but may be omitted depending on the use conditions.

The procedure for mounting the tire anti-slip device 10 having the above components on the tire 30 will be described.First, the anti-slip body 11 is put on the tread surface 31 of the tire 30 along the circumferential direction, and then the tire 30 The inner side ropes disposed on the back side of the tire 30 and the outer side ropes 14 disposed on the front side of the tire 30 are sequentially connected in a ring shape by connecting members 16 at both ends. Next, the hook hole 25 of the hook hooking portion 24 of the mounting band 20 is hooked on the band hook 15 of the outer side rope 14 and the band hook 15a of the connecting member 16 arranged on the front side of the tire 30. Thereby, the anti-slip body 11 is attached to the tire 30 in a state where the tensile force due to the rubber elasticity of the arm portion 23 of the mounting band 20 is given through the outer side rope 14 and is tightened on the tread surface 31. Become.

The mounting band 20 of the tire antiskid device 10 mounted on the tire 30 in this manner has a non-extensible reinforcing material 26 embedded around the hook hole 25 of the hook hooking portion 24 and in the length direction of the neck portion 23a. As a result, the extension of both the hook hooking portion 24 and the neck portion 23a is suppressed, and in addition to this, the mounting band
The upper limit of the elongation and the tensile stress of the arm portion 23 at the time of mounting 20 is restricted, so that the arm portion 23 can be used for a long period of time even under use conditions under which a strong vibration or load is applied.

In this embodiment, as shown in FIG. 6, the non-extensible reinforcing member 22 of the ring portion 21 also has flexibility at the base portion 23b where the arm portion 23 branches off from the ring portion 21 of the mounting band 20. A non-extensible reinforcing material (for example, a tire cord in which three or four tire cords are bundled) 28 is buried in the length direction of the root 23b. With this configuration, the arm 23
Since the elongation at the root of the arm 23 is suppressed, the early fatigue of the arm 23 is significantly reduced.

〔The invention's effect〕

As described above, according to the present invention, the upper limit of the elongation and the tensile stress generated in the arm portion when the hook hook portion of the attachment band is hooked on the band hook of the non-slip body is regulated, and the hook hook A non-extensible reinforcing material is embedded around at least the hook hole around the hook hole with the stop and the neck connected to the arm, and along the length direction of the root where the arm branches off from the ring. Since the non-extensible reinforcing material attached to the non-extensible reinforcing material of the ring part is embedded, the fatigue limit of the arm part increases and the durability life becomes longer,
A mounting band suitable for a non-slip device used for a heavy-duty vehicle tire to which a strong vibration or load is applied such as a truck, a bus, and a light truck can be obtained.

Further, according to the present invention, since it is not necessary to increase the shape and dimensions of the arm portion of the mounting band, mounting and dismounting can be performed with a small force, and workability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a use state of the attachment band of the present invention, FIG. 2 is an enlarged front view showing a main part of the attachment band, FIG. 3 is a side view of FIG. FIG. 5 and FIG.
FIG. 6 is a front view showing an example of disposition of the non-extensible reinforcing material at the hook hooking portion of the mounting band. FIG. 6 is a front view showing an example of disposing the non-extensible reinforcing material at the base of the arm of the mounting band.
The figure is a front view showing a conventional mounting band. In the figure, 10 is a tire anti-slip device, 11 is a non-slip body, 1
5, 15a are band hooks, 20 is a mounting band, 21 is a ring portion, 22 is a non-extensible reinforcing material of the ring portion, 23 is an arm portion, 23
a is a neck portion, 23b is a root portion, 24 is a hook hook portion, 25 is a hook hole, 26 is a non-extensible reinforcing material of a hook hook portion, and 28 is a non-extensible reinforcing material of a root portion of an arm portion. .

Claims (1)

(57) [Claims] An annular non-extensible reinforcing member is provided with a ring-shaped outer surface covered with a rubber-like elastic material, and a radially outwardly extending circumferentially spaced from the ring portion. A mounting band for a tire anti-slip device, comprising: a hook portion having a hook hole to be hooked on the band hook; and an arm portion made of a rubber-like elastic material connected to the hook portion.
The arm portion has an elongation of 40% or less when the hook hole of the hook hook portion is hooked on the band hook of the tire anti-slip body, and a tensile stress generated on each arm is 20 kg / cm. ^It has a shape and dimensions of ² or less, and is inextensible at least around the hook hole of the hook hook portion and at least around the hook hole in the length direction of the neck portion where the hook hook portion is connected to the arm portion. A tire anti-skid characterized by burying a reinforcing material and burying a non-extensible reinforcing material attached to a non-extensible reinforcing material of a ring portion in a length direction of a base portion where an arm portion branches off from a ring portion. Mounting band for equipment.