JPH10151922A - Tire antislipping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid lowering of grip force by preventing a twist phenomenon of a cross chain caused at touching with ground in a tire antislipping device which has the cross chain. SOLUTION: In a tire antislipping device A formed into nearly ladder type by a cross chain a1 and inside and side both fastening strings a2, a3, a holding member 3 for coming into surface contact with tire shoulders c2 of inside and outside of a tire is integrally mounted and both end parts of the cross chain 3 is held by holding force of the holding member 3 to prevent its twist.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-slip device for a tire, and more particularly to a non-slip device for a tire having a cross chain which crosses a tread surface on a tire outer periphery in a tire width direction.

[0002]

2. Description of the Related Art Conventionally, a non-slip device for a tire which is used by being wound and mounted on the outer periphery of a tire includes a cross member which crosses a tread surface of the outer periphery of the tire in a tire width direction as shown in FIG. Some include a chain 101.

[0003] The anti-slip device 100 for a tire described above is
It is called a ladder type metal chain, and the cross chains 101 are arranged at appropriate intervals in the tire outer peripheral direction, and a tightening string 102 such as a chain or a wire is installed between the inner ends of the cross chains 101 in the tire. At the same time, a similar tightening string 103 is provided between the tire outer ends of the cross chain 101 to constitute a substantially ladder type anti-slip device 100.

[0004] The above-described anti-skid device 100 for a tire includes:
After winding around the tire circumference, tighten the tightening cord 1 inside the tire.
02 is tightened to connect both ends, and furthermore, both ends of the tightening cord 103 on the outside of the tire are connected and mounted. A fastening device 104 such as a rubber band or an attachment is hung at regular intervals on the outer fastening string 103 described above,
By pulling out the outer tightening cord 103 toward the center of the tire, each cross chain 101 is attached to the tread surface on the outer periphery of the tire by crimping (FIG. 9).

[0005]

However, the conventional anti-skid device 100 configured as described above has a state in which the cross chain 101 is twisted by a load when the cross chain 101 is grounded during running. Becomes
The torsion of the cross chain 101 causes a reduction in grip characteristics during running and an increase in vibration and noise.

On the other hand, some conventional non-slip devices for tires cover the ground portion of the cross chain 201 with a rubber material 202 as in the non-slip device for tires of Japanese Patent Application No. 8-94040 (FIG. 8). In addition, there is a blade 203 that is configured to exhibit a spike effect by exposing a part of the cross chain 201 on the surface and front and rear surfaces of the blade 203.

However, when the same twist as described above occurs in the cross chain 201 of the above-described anti-skid device for a tire, the exposed portion 20 protruding from the surface of the blade 203 is formed.
The projecting direction of 5 is shifted with respect to the road surface. As a result, the grip effect when traveling on a frozen road surface is reduced.

An object of the present invention is to provide a non-slip device for a tire having a cross chain, as described above, to prevent a reduction in grip force by preventing the cross chain from being twisted due to a ground contact force during running. Is to do.

[0009]

In order to achieve the above-mentioned object, a non-slip device for a tire according to the present invention comprises a cross chain which crosses a tread surface on an outer periphery of a tire in a tire width direction. At the required intervals along the tire outer circumferential direction, a non-stretchable inner tightening cord is laid across the tire inner ends of these cross chains, and outer tightening is performed between the tire outer ends of the tire cross chains. In a non-slip device for a tire constructed by laying a string, a holding member that comes into surface contact with the inside and outside side portions of the tire is integrally provided near both ends of the cross chain.

According to the anti-skid device for a tire described above,
In a state where the same device is wound around the tire and mounted,
Each cross chain connected by both the inner and outer tightening strings is mounted so as to cross the tread surface on the outer periphery of the tire, and is brought into a state of being pressed against the tread surface on the outer periphery of the tire by a tightening force of a tightening device or the like. In addition, the holding members provided near both ends of each cross chain have their back surfaces in surface contact with the inner and outer side surface portions, that is, the range from the shoulder side surface to the wall portion.

During running, the cross chain is subjected to a twisting load due to the contact force with the road surface, but the holding members provided at both ends of the cross chain are brought into surface contact with the tire shoulders and fixed. As a result, a holding force opposing to twisting and rattling is generated, and the holding force can prevent the cross chain from being twisted and rattling occurring at both ends of the cross chain. In addition, the above-mentioned tightening string means a member such as a rope, a chain, and a wire that is long in a string shape and has a sufficient tensile strength.

In the anti-slip device for a tire according to the present invention, it is preferable that a rubber member is applied to both ends of the cross chain to form a holding member. In this case, the holding member that obtains the holding force is elastically deformed corresponding to the shape of the tire side surface,
Surface contact is made in close contact with the whole surface.

[0013] Further, the antiskid device for a tire according to the present invention comprises:
The metal chain in the ground range in the middle portion of the cross chain may be covered with a rubber material in a predetermined shape to form a blade, and a part of the cross chain may be exposed on the surface of the blade.

According to this anti-slip device for a tire, the ground portion of the cross chain is covered with the rubber material to form a blade. A part of the cross chain is exposed on the surface of the blade, and the exposed part functions as a spike, improving grip characteristics on a frozen road surface. Also, the cross-chain of the tire anti-skid device and the blade integrated with the cross-chain are prevented from being twisted during traveling by the holding member, so that the exposed portion of the cross chain functioning as a spike is correctly aligned with the road surface. The grounding is made in the state of facing, and the spike function is improved.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The anti-skid device A for a tire shown in FIGS. 1 to 6 includes two side chains a2 and a3 located inside and outside a tire made of a metal chain, and a required number of cross chains a1 connecting the side chains a2 and a3. Thus, a substantially ladder-type non-slip device main body a is formed, and the blade 1 is formed by coating a rubber material 1a on an intermediate portion of each cross chain which is a grounding range of the main body a.

The anti-slip device body a has an inner side chain a2 made of a metal chain and an outer side chain a3 arranged in parallel at a predetermined interval in the tire width direction. A required number of cross chains a1 are laid between a3 and the two side chains a2, a
3 are arranged at regular intervals in the length direction to form a substantially ladder shape in plan view. The above cross chain a1
Attach fasteners a10 to both ends, and
10, the inner and outer side chains a to be tightening strings
2 and a3, both side chains a
It is attached and supported between 2 and a3.

As shown in FIG. 3 and FIG. 6, the blade 1 is formed by covering the cross chain a1 with a thick rubber material 1a in a range corresponding to the tire contact surface. The blade 1 is for reducing vibration and noise generated when the cross chain a1 is grounded, and the cross chain a1 constituting the ground range of the non-slip device body a.
The rubber material 1a is filled into a region having a length substantially equal to the width of the tire tread surface, and is covered in a substantially cylindrical shape. Further, the coating with the rubber material 1a is formed such that both ends of the substantially cylindrical shape are rounded in a hemispherical shape, thereby preventing both ends of the rubber material 1a from being damaged by contact during running.

The blade 1 has a bendable cross chain a1 as a core material, and a rubber material 1
Since a is integrally coated, rigidity can be ensured and also has an appropriate flexibility. Therefore, in the mounted state, the tire C naturally adheres so as to cross the tread surface c1 of the tire C in the width direction of the tire, and is mounted in a state of being adjusted to the tire.

The blade 1 has a rubber material 1a which is part of each chain element a 'constituting the cross chain a1.
The blade 1 is exposed so as to slightly protrude from the surface thereof, and the exposed portion 1 b functions as a spike protruding from the surface of the blade 1. The exposed portions 1b are formed in a zigzag manner in three directions, that is, a ground contact surface and front and rear surfaces on the surface of the blade 1, and are not provided on the back surface of the blade 1, that is, on the outer peripheral surface side of the tire. That is, coating is performed in a state where the insertion position of the cross chain a1 in the cross section of the rubber material 1a is shifted to the surface side from the axis of the substantially cylindrical rubber material 1a (FIG. 5). Incidentally, the blade may be one in which the exposed portion is projected in four directions on both the front and back surfaces and the front and rear surfaces, like the blade 1 'shown in FIG.

At both ends of the blade 1, holding members 3 made of a rubber material are integrally formed in the same manner as the blade 1. As shown in FIGS. 4 and 6, the holding member 3 receives the fastening force of the fastening device f in a state where the anti-skid device A for a tire is mounted on the tire C, and is brought into a crimped state on the shoulder portion c2 of the tire C. The surface contact generates a holding force for preventing the cross tine a1 and the blade 1 from being twisted.

The holding member 3 is formed by covering the space between the fastening members a10 provided at both ends of the cross chain a1 and the chain element a1 'to which the to-be-attached members a10 are connected so as to be thick. It is configured as a block body protruding toward the back side of the fitting a10, that is, toward the shoulder portion c2 of the tire C.

The holding member 3 has a width slightly larger than that of the cross chain a1 and is formed by rounding both ends of the holding member 3 into a semicircular arc, and a contact surface 3a is formed on the back surface of the member 3 in a planar manner. It is. The holding member 3 is configured such that the contact surface 3a is in close contact with the side surface of the shoulder portion c2 of the tire C when the antiskid device A for a tire is mounted on the outer periphery of the tire C.

Between the two holding members 3 and both ends of the blade 1, the cross chain a 1 is exposed without covering the rubber material, thereby forming a bendable bent portion 2. . The bent portion 2 is a tire C shoulder portion c
2 is provided at a position corresponding to the corner portion.

As described above, when the cross chain a1 is covered with a rubber material to form the blade 1 and the two holding members 3, the rigidity of the cross chain a1 itself increases, and the tire C
It is difficult to bend along the corner of the shoulder portion c. However, by providing the bent portion 2 as described above, the cross chain a1 bends along the cross-sectional shape of the outer peripheral portion of the tire C, whereby the blade 1 is moved with respect to the tire C tread surface c1 and Both holding members 3 come into close contact with the side surfaces of the tire C shoulder portion c2 without difficulty.

As described above, the cross chain a1 formed by coating the blade 1 and both holding members 3 is formed by hooking the hooks of the fastening members a10 provided at both ends to the side chains a2 and a3, and caulking. Side chain a2, a
It is erected between three.

As shown in FIGS. 4 and 5, the anti-slip device A for a tire constructed as described above is wound around the outer periphery of the tire C and mounted, and the connection provided at both ends of both side chains a2 and a3. After the metal fittings 2a and 2b are connected, a metal fitting f1 hooked along the side chain a3 outside the tire C.
The tire anti-slip device A wound around the outer periphery of the tire C is tightened and mounted on the outer peripheral surface of the tire C by sequentially attaching and mounting a tightening device f made of a rubber band or the like.

In the above mounted state, each cross chain a1 is supported so as to cross the tire C tread surface c1 in the tire width direction, and the grounding range where the blade 1 is provided is adjusted by the tightening force of the tightening device f to the tire C tread. It is in a state of being pressed against the surface c1 (FIG. 6). Further, the cross chain a1 is largely bent from the bent portion 2, so that the holding members 3 provided at both ends are in a state of being pressed against the tire C shoulder portion c2 from both the inside and outside.

The above pressing force exerts a sufficient holding force by bringing the contact surface 3a of the holding member 3 having a required width and length into close contact with the shoulder portion of the tire C elastically and completely. The force stabilizes both ends of the fastening fitting a10 and the cross chain a1 while slightly floating from the surface of the tire C shoulder portion c2.

That is, as described above, the cross chain a1 whose both ends are held by the holding members 3 is twisted or rolled by holding the both ends by the holding members 3 so that the grounding area provided with the blades 1 is twisted or rolled. Maintain a stable state so that you do not have to. As a result, even when an impact force is applied to the cross chain a1 due to contact with the road surface during traveling, the cross chain a1 is prevented from being twisted by the holding force of the two holding members 3 and exposed as a spike portion. The portion 1b can always be directed in the direction directly facing the road surface, and a good gripping force can be exhibited.

Further, since the holding members 3 are interposed at both ends of the cross chain a1 as described above, the cross chains a1 are stabilized while slightly floating from the tire shoulders c2. Therefore, while traveling, the rattling and vibration generated at both ends of the cross chain a1 are prevented, and the cross chain a1 is prevented.
It is also possible to prevent the shoulder C2 and the sidewall C3 of the tire C from being damaged due to contact with both ends and the fastening fitting a10.

The anti-slip device A for a tire according to the above embodiment.
In the above, the blade 1 is formed by covering the intermediate portion of the cross chain a1 with the rubber material 1a. However, the anti-skid device for a tire of the present invention provides the two holding members 3 without providing the blade at the intermediate portion of the cross chain a1. May be exposed as it is (not shown). Even in this case, the torsion of the cross chain a1 can be effectively prevented as in the case of the above embodiment.

Further, the holding member 3 of the above embodiment is formed in a block shape using a rubber material. However, the material and shape of the holding member are not limited to those of the above embodiment, but may be applied to the shoulder portion of the tire. Any form may be used as long as it can make surface contact in a stable state, and the material may be made of synthetic resin or the like other than rubber.

[0033]

As described above, the anti-slip device for a tire according to the present invention includes a cross chain that crosses the tread surface on the outer periphery of the tire in the width direction of the tire. And a holding member that comes into surface contact with the outer tire shoulder portion is integrally provided, so that the torsional load of the cross chain caused by the grounding force during traveling is provided at both ends of the cross chain. When the member is brought into surface contact with and fixed to the tire shoulder portion, the member is securely received, and the phenomenon that the cross chain is twisted or rattle occurs at both ends can be effectively prevented. As a result, it is possible to avoid a phenomenon in which the grip force is reduced due to the twisting of the cross chain, to constantly exhibit good grip characteristics during running, and to reduce the tires due to rattling and vibration generated at both ends of the cross chain. Can be prevented from being damaged.

According to a second aspect of the present invention, the holding member is formed by applying rubber materials to both ends of the cross chain, so that the holding member is in the mounted state. The member is elastically deformed in accordance with the shape of the shoulder portion of the tire, and comes into surface contact with the surface of the shoulder portion in a state of being in full contact with the surface of the shoulder portion, thereby preventing torsion, rattling, and vibration of the cross chain. The holding force can be further improved.

According to a third aspect of the present invention, a blade is formed by covering the ground area of the cross chain with a rubber material in a predetermined shape, and a part of the cross chain is formed on the ground surface of the blade. In the exposed one, it can absorb vibration and noise generated when the cross chain is grounded by the blade, and part of the cross chain exposed on the surface of the blade cuts into the frozen road surface and functions as a spike, Good grip can be exerted even on frozen road surfaces. In addition, since the torsion of the cross chain is prevented by the holding member as described above, a part (spike portion) of the cross chain exposed to the blade can be always held in a direction directly facing the road surface. Grip characteristics can be exhibited more stably.

[Brief description of the drawings]

FIG. 1 is a front view showing a tire antiskid device embodying the present invention.

FIG. 2 is a partially enlarged view of the tire anti-slip device.

FIG. 3 is a perspective view showing the blade portion of the tire anti-slip device with a part cut away.

FIG. 4 is a front view showing a state in which the tire antiskid device is mounted on a tire.

FIG. 5 is a front view showing a blade portion of a non-slip device mounted on a tire with a part cut away.

FIG. 6 is a sectional view taken along line VI-VI in FIG. 5;

FIG. 7 is a longitudinal sectional view showing a mounted state of a tire anti-slip device in which an exposed portion of a metal chain is also provided on a tire tread surface side.

FIG. 8 is a front view showing one end of a conventional tire anti-slip device provided with a blade in a cross chain.

FIG. 9 is a front view showing a state in which a conventional metal chain tire antiskid device is mounted on a tire.

FIG. 10 is a front view showing a conventional metal chain tire anti-slip device.

[Explanation of symbols]

 A: Anti-slip device for tire a: Anti-slip device body a ': Chain element a1: Cross chain a2, a3: Side chain a10: Fastening fitting 1: Blade 1a: rubber material 1b: exposed portion 3: holding member

Claims (3)

[Claims] 1. A cross chain crossing a tread surface of a tire outer periphery in a tire width direction, and the cross chains are arranged at required intervals along the tire outer peripheral direction, and tire inner end portions of these cross chains are provided. A non-stretchable inner tightening string is laid across the tire cross-chain, and a tire anti-slip device configured by laying an outer tightening string across the tire outer end of the tire cross chain, in the vicinity of both ends of the cross chain, A non-slip device for a tire, wherein a holding member that comes into surface contact with side portions on the inside and outside of the tire is integrally provided. 2. The non-slip device for a tire according to claim 1, wherein a rubber member is applied to both ends of the cross chain to form a holding member. 3. A blade formed by covering a metal chain in a ground range in a middle portion of the cross chain with a rubber material in a predetermined shape to form a blade, and exposing a part of the cross chain on a surface of the blade. 3. The anti-skid device for a tire according to 2.