JPH11348518A - Antiskid device for tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve durability by preventing a local abrasion generated in the metal chain of a connecting ring with hexagonal pattern in an antiskid device for a tire having a hexagonal pattern with the rubber coated metal chain. SOLUTION: This device constitutes an antislipping device main body with a hexagonal pattern composed of metal chains. Each cross chain forming each straight line part of the hexagonal pattern is coated with a rubber material to form a blade 1. In the hexagonal pattern, each connecting ring part 4 is formed by collecting the cross chains substantially in a Y-shape and the ends of the cross chains a1 connected to each connecting ring 4 are integrally coated with the rubber material. The abrasion of the metal parts of each connecting ring part 4 is delayed duet to the rubber material coating and the durability of the antiskid device is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire anti-slip device in which a predetermined portion of a metal chain is covered with rubber.

[0002]

2. Description of the Related Art Conventionally, among non-slip devices for tires which are used by being wound around an outer periphery of a tire, there is a device in which a main body of the anti-slip device is constituted by a metal chain. The above-mentioned conventional metal chains include a tortoiseshell chain in which the chain connection pattern is a tortoiseshell shape, a ladder type having a substantially ladder shape, and the like, and have an advantage that they can be manufactured relatively inexpensively.

[0003] However, in the above-mentioned metal chain, the metal chain is directly in contact with the road surface and, at the same time, the chains come into intense contact with each other, so that the noise generated during traveling increases. In addition, the hard chain intermittently contacts the dry or frozen road surface, causing severe vibration.Furthermore, the chain in the ground range wears relatively quickly, and there is a problem in durability against running on a dry road surface. there were.

Accordingly, the applicant of the present application has filed Japanese Patent Application No. Hei 8-278.
As in the tire anti-slip device of No. 174, the ground portion of the metal chain is covered with a rubber material to form a blade, and by exposing a part of the metal chain to a part of the blade, good durability is achieved. We have developed a device that has a good balance between the noise and vibration reduction effect of the rubber blade and the spike effect of the exposed part of the metal chain.

[0005]

As described above, in a non-slip device for a tire in which a blade is formed by coating a metal material with a rubber material on an installation portion of the metal chain, the metal chain forming the device main body is formed into a turtle-shaped pattern. There are those that have been configured. As shown in FIG. 9, a non-slip device 10 for a turtle-shaped tire.
Numeral 0 forms the above-mentioned tortoiseshell pattern by connecting the substantially rhombic pattern portions 101 with each other by a connecting portion 102 along the tire outer peripheral surface.

[0006] In the above-mentioned tortoiseshell pattern, portions where three metal chains are connected in a substantially Y-shape are connected by a connecting ring 103. Further, a rubber material 104a is coated in a predetermined shape on the installation portion of each metal chain forming the turtle-shaped pattern as described above to form a blade 104, and a part 105 of the metal chain is exposed on the surface of the blade 104. To function as spikes.

[0007] The connecting ring 103 is located at the center of the tire contact surface and is the portion that contacts the strongest during running. Therefore, when a running test for confirming durability is performed, it is found that each of the metal chains connected in a substantially Y-shape by the connecting ring 103, particularly the connecting ring 103 provided at the end of the connecting portion 102 on the rotation front end side. It was found that the edges were severely worn and would cut earlier than other parts. If the metal chain connected to the connection ring 103 is cut at an early stage as described above, even if the wear resistance of the metal chain can be improved by rubber coating and the durability can be increased, the durability can be sufficiently improved. There was a problem that it could not be demonstrated.

It is an object of the present invention to provide a non-slip device for a turtle-shaped tire having a rubber coating as described above, which has a function of preventing local wear of a metal chain at a connecting ring portion in a turtle-shaped pattern. In this way, its durability is improved.

[0009]

According to the present invention, at least a ground contact portion of a non-slip device body wound around a tire is formed in a turtle-shaped pattern by a metal chain. A tire anti-slip device in which each cross chain constituting each straight portion of the turtle pattern is coated with a rubber material in a predetermined shape to form a blade, and in the turtle pattern formed by the metal chain, Three cross chains are approximately Y
The connecting ring portions that are gathered in a letter shape and are connected by the connecting ring, and the connecting ends of the cross chains connected to these connecting rings are integrally covered with a rubber material.

According to the above-described means, at least the ground contact portion of the anti-slip device body wound and mounted on the outer periphery of the tire is formed in a turtle-shaped pattern by the metal chain. Further, the turtle-shaped pattern of the anti-skid device body is formed by sequentially connecting and connecting the ends of the respective cross chains constituting the respective linear portions of the turtle-shaped pattern. Each of the cross chains is covered with a rubber material in a predetermined shape and configured as a blade. The metal chain is exposed from the blade, and the metal chain is grounded to obtain a grip force.

In the anti-slip body, a connecting ring is provided at each connecting portion where the three cross chains are gathered in a substantially Y-shape in the same turtle-shape pattern, and the above-mentioned three crosses are connected via the connecting ring. The ends of the chain are connected. In addition, the end of each of the connecting rings and the cross chains connected to the connecting rings is integrally covered with a rubber material. Accordingly, the connecting portion is grounded through the rubber material covering the connecting portion during traveling, thereby preventing the connecting ring and each cross chain end from being directly worn.

According to a second aspect of the present invention, there is provided a non-slip device for a tire.
A spike pin is embedded in a rubber material layer of a connecting portion of each cross chain connected via the connecting ring. In this case, when the connecting portion of each cross chain connected in a substantially Y-shape by the connecting ring is grounded, the spike pins embedded in the rubber material covering the connecting portion bite into the frozen road surface to increase the gripping force.

According to a third aspect of the present invention, there is provided a non-slip device for a tire.
The spike pin is buried in a state of being housed inside the connection ring. In this case, since the spike pin is provided inside the connection ring and is fixed by the rubber material covering the connection ring, the spike pin is firmly fixed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The antiskid device A for a tire shown in FIGS. 1 to 7 has inner and outer tightening cords a2 and a3 arranged in parallel and connects a number of cross chains a1 and a1 ′ made of a metal chain into a predetermined shape. The non-slip device main body a having a tortoise-shaped pattern is constructed by being installed between the two tightening cords a2 and a3. The main body a of the anti-slip device is configured such that the blades 1 are formed by coating rubber materials 1a on the cross chains a1 and a1 'constituting the ground portion of the tortoiseshell pattern. Each of the above blades 1
From the rubber material 1a, the metal chain is exposed, a good gripping force is exerted by the metal chain, the durability is improved by the rubber material 1a, and the generation of noise is reduced (FIG. 1).

The anti-slipping device body a has an inner tightening string a2 and an outer tightening string a3 arranged in parallel at a predetermined interval, and the inner and outer tightening strings a2, a2
3, the cross chains a1 and a1 ′ constituting each straight line portion of the above-mentioned tortoiseshell pattern are erected in a combined state as a chain unit P1 to be described later to form a tortoiseshell pattern.

The inner and outer tightening cords a2 and a3 are formed in a string shape by coating a rubber material around a core material made of a high-tensile fiber such as aramid fiber or nylon fiber. In addition, detachable connection fittings 2a and 2b are fixed to both ends of the inner tightening cord a2.
a and 2b are connected to each other to connect both ends of the inner tightening cord a2 to connect the same string a2 in an annular shape, and to tighten the inside of the anti-slip device main body a in a state of being wound around the outer periphery of the tire C. It is composed.

On the other hand, the outer tightening cord a3 is divided at a substantially central portion, and a hook 2c fixed to an end of the divided portion at the central portion is formed at the other end of the divided portion. 2
The center portion of the outer side tightening cord a3 is detachably connected by being hooked on the portion d. Further, a locking ring e similar to the above-described locking ring is formed at one end of the outer tightening string a3, and the outer tightening string a3 is formed.
A hook 2g is attached to the other end of the hook to be hooked on the hook ring e and detachably connected thereto. The outer tightening string a
In FIG. 3, a latch 3 of a rubber band d for fastening the anti-slipping device body a to the outer peripheral surface of the tire C is fixed at regular intervals along the length direction of the cord a3.

The turtle-shaped pattern portion of the non-slip device main body a is a cross chain a composed of a metal chain of a predetermined length.
1, a1 'are combined to form a required number of chain units P1 (FIG. 2-b), and these chain units P1 are sequentially connected in the longitudinal direction of both the inner and outer tightening cords a2, a3 in FIG. A turtle-shaped pattern as shown is constructed.

More specifically, the chain unit P1 includes a cross chain a as shown in FIG.
1, a1 'is connected to connect to a predetermined pattern,
The blade 1 is formed by covering each of the cross chains a1 with a rubber material 1a. In the chain pattern shown in FIG. 2A, the ends of the two cross chains a1 are connected to each other via a connection ring 4 so as to be substantially V-shaped in a plan view, and thus the V-shape is formed. Two sets of two connected cross chains a1 are prepared, and the cross chains a1 'are connected between the connecting rings 4 of each set.

As described above, in order to construct the chain unit P1 as shown in FIG. 2B, it is necessary to correspond to the ground portions of the cross chains a1 and a1 'connected as shown in FIG. The blade 1 is constituted by covering a portion with a rubber material 1a in a thick shape. That is, the blade 1 is configured by a part of the cross chain a1 and the rubber material 1a coated on the surface thereof. The blade 1 is provided with a rubber material 1a at least in a portion corresponding to a range of a tire contact surface (tire tread surface) in each of the cross chains a1 and a1 'constituting a contact region of the anti-slip device body a.
To form a substantially cylindrical shape. Therefore, in the case of each cross chain a1 whose end is connected to the inner tightening string a2 or the outer tightening string a3, the rubber material 1a is not covered near the connecting side end which is in a range where it does not touch the ground during traveling. (FIG. 1, FIG. 2-b).

The blade 1 is exposed so as to slightly protrude from the surface of a rubber material 1a formed by covering a part of each of the cross chains a1 and a1 'with a substantially circular cross section.
The exposed portion 1 b is configured to function as a spike projecting from the surface of the blade 1. The exposed portion 1b is projected in a staggered manner on the ground surface and both front and rear sides of the blade 1,
The blade 1 is not provided on the tire outer peripheral surface side. 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 cylindrical rubber material 1a (FIG. 6).

In the turtle-shaped pattern of the anti-slip device body a configured as described above, the three cross chains a1 and a1 'are gathered in a substantially Y-shape and are connected to each other by the connecting portions e, That is, two connecting portions e formed in the chain unit P1 are covered with the rubber material 1a '.

The connecting portion e includes three cross chains a
1 and a1 ', and three cross chains a1 and a1' connected to the connection ring 4, respectively.
Is integrally and thickly covered with a rubber material 1a '. As described above, the outer shape of the connecting portion e formed by coating with the rubber material 1a 'is such that the connecting ring 4 is formed into a cylindrical shape having a diameter slightly larger than the diameter of the connecting ring 4, and the outer peripheral surface of the cylindrical portion e1 Each cross chain a1, a1 '
Is formed in a shape in which a projecting portion e2 having a substantially elliptical cross section and covering the connecting end portion is projected in three directions. The protruding ends of the protruding portions e2 are respectively joined to the rubber materials 1a at the ends of the blades 1 provided on the cross chains a1 and a1 'to integrate the rubber materials 1a' and 1a (FIG. 2). b). That is, the rubber material 1a of each blade 1 provided on each of the cross chains a1 and a1 'constituting the chain unit P1 and the rubber material 1a' of the connecting portion e are simultaneously and integrally formed.

On the inner upper surface of the connecting ring 4 of the connecting portion e, a spike pin 5 formed in a substantially stud shape is provided, and a base 5b of the spike pin 5 is formed of a cylindrical portion e1 formed of a rubber material 1a '. The spike pin 5 buried inside and the same
Is configured so that the tip 5a of the first column protrudes from the center of the upper surface of the cylindrical portion e1 (FIGS. 1 and 3). The tip 5a of the spike pin 5 is formed in a pipe shape so as to function as a so-called macaroni pin.

The spike pin has a long distal end 5a like a spike pin 5 'shown in FIG. 4, a base 5b is arranged on the lower surface side of the connecting ring 4, and the distal end 5a is connected. The cylindrical portion e1 is passed through the inside of the ring 4
You may comprise so that it may protrude in the center part of an upper surface. Further, as shown in FIG. 8, the spike pin 5 buried in the connecting portion extends together with the center of the cylindrical portion e1 so as to integrally connect the outer periphery of the cylindrical portion e1 and the protruding portion e2. It may be embedded in the formed extension part e3. That is, the setting of the outer shape of the connecting portion, the installation position and the number of the spike pins may be arbitrarily changed.

In each of the chain units P1 configured as described above, the front end of each cross chain a1 extending toward the inner and outer tightening cords a2 and a3 is attached to the inner and outer tightening cords a2 and a3 via the fastening member 6. It is fixed by caulking (FIGS. 1 and 5). Incidentally, each chain unit P1 fixed by caulking between the inner and outer tightening cords a2 and a3 is the same unit P
The first connection point chain a1 'is mounted in a direction along the outer circumference of the tire C, that is, in parallel with both the inner and outer fastening cords a2 and a3.

Then, as described above, the chain unit P1 is sequentially attached to the inner and outer tightening cords a2 and a3 along the length direction to form a tortoiseshell pattern as shown in FIG. Further, the front ends of the cross chains a1 to be joined to the adjacent chain units P1 are connected to each other by using one fastening fitting 6 for both the inner and outer fastening cords a2.
a3 (FIGS. 1 and 7). That is, by connecting the leading ends of the cross chains a1 of the adjacent chain units P1 via the fasteners 6,
Four cross chains a1 are connected in a substantially diamond shape.

By the way, each of the cross chains a1, a
The rubber material 1a of the blade 1 provided on the 1 ′ is covered with the surface of each of the cross chains a1 and a1 ′ in a state where the rubber material 1a is not adhered or adhered by a weak adhesive force that is easily released. I have. As described above, by joining the surface of each of the cross chains a1, a1 'and the rubber member 1a in a non-adhered state or in a state of being easily separated, each of the cross chains a1, a1' and the rubber member 1a are joined. Between the members and the cross chains a1 and a1 'are freely displaced with the bending of the cross chains a1 and a1', and the rubber material 1a is also easily deformed independently of the cross chains a1 and a1 '. As a result, Thus, the blade 1 itself flexes flexibly. Since the blade 1 has excellent flexibility, the blade 1 is naturally adhered along the outer peripheral surface of the tire in the mounted state, and is mounted in a state of being adjusted to the tire.

On the other hand, the connecting portion e of each chain unit P1
In contrast to the above case, the connecting ring 4 and the cross chains a1, a connected to the connecting ring 4
The connection end of 1 ', each metal member of the spike pin 5, and the rubber material 1a' covering them are firmly bonded. This is because the rubber material 1a 'is connected to the connecting ring 4 or the cross chains a1 and a1' by violent contact force received during running.
This is to prevent the film from being peeled off and damaged.

The anti-slip device A for a tire constructed as described above is wound around the outer circumference of the tire C as shown in FIGS. 5 and 7, and is provided with connection fittings 2a provided at both ends of an inner tightening cord a2. , 2b, the hooks 2c and 2g of the outer tightening string a3 are hooked and connected to the hooking rings 2d and 2e, respectively. Next, the rubber band d is hung and attached to each of the hooks 3 provided on the outer tightening cord a3, so that the tire antiskid device A wound around the outer periphery of the tire C is attached.
Is mounted on the outer peripheral surface of the tire C by tightening.

In the anti-slip device A for a tire described above, the cross-sectional shape of the blade 1 is circular. However, the shape of the blade is not limited to the above-described shape. Alternatively, it may have a polygonal cross section. Each of the blades 1 is configured by exposing a part of the cross chains a1 and a1 ′ in a staggered manner on the surface thereof.
The rubber material 1a may be entirely covered with the rubber material 1a.
In this case, although the spike effect of the blade is weakened, it is possible to reduce noise generated when the vehicle is running on a dry road surface where the asphalt road surface is exposed, and it is possible to avoid generation of dust due to the spike. Further, the inner and outer tightening cords of the apparatus main body are not limited to a high-tensile core material covered with a rubber material as in the above-described tightening cords a2 and a3, but may be other materials, such as a chain or the like. Rope, wire, etc. may be used.

[0032]

As described above, according to the present invention, in a torso-shaped pattern of a non-slip device body constituted by a metal chain, each connecting ring portion for assembling and connecting three cross chains into a substantially Y-shape. The end of each cross chain connected to each connecting ring is integrally covered with a rubber material. Therefore, the wear resistance of each cross chain at the ground contact portion can be improved by the blades provided on each cross chain, and the connection ring portion that is easily worn partially, and the end portion of each cross chain connected to the connection ring The (connecting portion) can be prevented from being directly grounded to the ground by covering with a rubber material, and the wear resistance can be improved similarly to the blade portion. As a result, as described above, only the connecting ring portion is not cut off early, so that the service life of the anti-skid device itself is greatly improved, and the anti-slip device itself can sufficiently withstand long-term use.

The antiskid device for a tire according to claim 2 is
Since the spike pin is buried in the rubber material layer of the connecting portion of each cross chain connected via the connecting ring, when the connecting ring portion of the antiskid device body is grounded on a frozen road surface or the like, The spike pins cut into the frozen road surface to increase grip. In addition, since the hard spike pins protrude from the connecting portion, wear of the covering rubber at the connecting portion can be reduced by the spike pins. The cross chain ends are exposed, and the metal parts have the effect of delaying the service life until they are worn and cut.

The antiskid device for a tire according to claim 3 is
Since the spike pin is embedded and embedded inside the connection ring portion, the spike pin is fixed by the rubber material covered while being firmly held by the connection ring. The pin fixing force is greatly improved, and the grip force by the spike pin can be more effectively increased.

[Brief description of the drawings]

FIG. 1 is a plan view showing a tire anti-skid device embodying the present invention in a partially unfolded state.

FIG. 2A is a perspective view showing a metal chain of the chain unit, and FIG. 2B is a perspective view showing a chain unit provided with blades.

FIG. 3 is a longitudinal sectional view of the connecting portion.

FIG. 4 is a vertical cross-sectional view showing a connecting portion to which a spike pin having a long distal end portion is attached.

FIG. 5 is a front view showing a mounted state of the tire anti-slip device.

FIG. 6 is a front view showing a connection portion of the anti-skid device for a tire mounted on the tire, with a portion cut away.

FIG. 7 is a perspective view showing a mounted state of the antiskid device for the tire.

FIG. 8 is a plan view showing a chain unit in which three spike pins are provided in a connecting portion.

FIG. 9 is a plan view showing a development view of a conventional tire anti-slip device.

[Explanation of symbols]

 A: Anti-slip device for tire a: Anti-slip device body C: Tire P1: Chain unit a1, a1 ': Cross chain a2, a3: Fastening string e: Connection Part 1: blade 1a: rubber material (blade portion) 1a ': rubber material (connection portion) 4: connection ring 5, 5': spike

Claims (3)

[Claims] At least a ground contact portion of a main body of a non-slip device wound around a tire is formed in a turtle-shape pattern by a metal chain, and rubber is provided on each cross chain forming each straight portion of the turtle-shape pattern. What is claimed is: 1. A non-slip device for a tire comprising a material coated in a predetermined shape to form a blade, wherein three cross chains are gathered into a substantially Y-shape and connected by a connecting ring in a turtle-shaped pattern formed by the metal chain. A non-slip device for a tire, wherein the connecting ring portions and the connecting ends of the cross chains connected to the connecting rings are integrally covered with a rubber material. 2. The anti-skid device for a tire according to claim 1, wherein a spike pin is embedded in a rubber material layer of a connecting portion of each cross chain connected via the connecting ring. 3. The anti-skid device for a tire according to claim 2, wherein the spike pin is embedded in a state of being housed inside a connecting ring.