JPH0448963Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a double ladder type tire anti-slip device used for double tires of trucks and the like.

<Prior Art> As a conventional ladder-type tire slip prevention device of this type, there is one shown in FIG. This anti-slip device C is made of a metal chain, that is, two parallel inner and outer side chains c ₁ , c ₂ in which a required number of metal side links 21 are connected, and both side chains c ₁ , c It is composed of a plurality of cross chains C ₃ that span between _two cross chains and are connected with a required number of metal cross links 22, and is formed approximately in the shape of a ladder as a whole. It is formed into a band shape that fits the tire, and can be connected at both ends when attached to the tire.

When the above-mentioned anti-slip device C is wound around a double tire and the ends are connected and attached, both side chains c ₁ and c ₂ are fixed in position on both sides of the double tire in an annular shape, and each cross chain c ₃ is fixed in position while being exposed to the tread surfaces of the inner and outer tire parts, and this cross chain _c3 comes into direct contact with the road surface.

However, in this anti-slip tool C, when the car is running, the links 21 and 22 in the cross chain _c3 and both side chains _c1 and _c2 violently collide with each other due to rotational vibration of the tires.
In addition, the cross chain _c3 collided violently with the road surface, and the collision of these links 21 and 22 caused extremely large noise and vibration.

Furthermore, since the chain is made of metal, there is a problem in that it scrapes and damages the road surface during running, thereby causing a large amount of dust pollution.

<Technical Issues> The technical issues to be solved by the present invention are to be able to accurately and securely attach tires to the tires without misalignment, to reduce noise and vibration during driving, and to reduce dust. To provide a double ladder type anti-slip device that does not cause pollution.

<Means for achieving the object> The technical means taken by the present invention to achieve the above object is to use a plurality of rubber or synthetic resin-based materials formed to a length that spans both tires of a double tire. The anti-slip members are installed and fixed in a ladder shape at appropriate intervals between the parallel inner and outer tightening ropes, and a recess extending in the width direction is provided on the center surface side of each anti-slip member, and a recess is provided on the center back side of the anti-slip member. The present invention is characterized in that a convex portion is provided in the width direction to provide an attachment portion for the central tightening rope parallel to the inner and outer tightening ropes.

<Function> According to the above-mentioned technical means of the present invention, each anti-slip member is positioned in a ladder shape spanning the widthwise tread surface of both the inner and outer tires and spaced at appropriate intervals in the circumferential direction. After wrapping around both the inner and outer tires, the inner, outer and center tightening ropes are individually connected and tightened toward the center of the tire to attach the anti-slip device to the double tire. During this installation, ensure that each anti-skid member is stretched symmetrically between the tread surfaces of both the inner and outer tires (left-right symmetry) while checking the indentation provided on the center surface of each anti-slip member to ensure accuracy. I can do it. That is, the center alignment of the anti-slip member with respect to the widthwise tread surface of the double tire can be performed while checking the recesses of each anti-slip member. Each anti-slip member is firmly attached with its back surface in close contact with the tread surface of both the inner and outer tires by tightening the inner and outer center tightening ropes toward the center of the tire.

During driving, each non-slip member made mainly of rubber or synthetic resin deforms elastically in response to a collision with the road surface, absorbing the impact force and significantly reducing collision noise and vibration. The road surface will not be scraped due to severe deformation.

<Effects of the invention> Since the double ladder-type tire slip prevention device of the present invention is constructed as described above, the ladder-like anti-skid device extends over the width direction tread surfaces of both the inner and outer tires and is spaced at appropriate intervals in the circumferential direction. Each anti-skid member attached to the tire is connected to the inner and outer tightening ropes, and the central tightening rope is attached to the attachment part provided on the convex part in the center and is installed across each anti-skid member. By tightening, it is possible to securely install the anti-slip member with its back surface in close contact with the tread surface of both the inner and outer tires.Moreover, when it is installed, each anti-slip member can be installed between the tread surfaces of both the inner and outer tires, symmetrically ) can be performed while checking the recess provided in the center surface of each anti-slip member.

Therefore, according to the ladder type tire anti-slip device of the present invention, when the anti-slip device is installed on a double tire, the anti-slip device can be placed in the correct position on the double tire without causing any misalignment to one of the inner and outer tires. It can be installed accurately and securely, and each non-slip member mainly made of rubber or synthetic resin deforms elastically in the event of a collision with the road surface while driving, absorbing the impact force and reducing collision noise and noise. At the same time, it significantly reduces vibration, and at the same time, does not scrape the road surface due to elastic deformation, making it possible to suppress the occurrence of dust pollution.

Thus, the intended purpose can be achieved.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows a double-type ladder-type tire slip prevention device A in which the present invention is implemented. At the same time, a plurality of anti-slip members a formed in the shape of a belt with an appropriate width are installed and fixed in a ladder shape at appropriate intervals, and a plurality of anti-slip members a formed in the shape of a band with an appropriate width are installed and fixed in the middle of both the inner and outer tightening ropes 1 and 3. A parallel central tightening rope 2 is attached and fixed at the center of each anti-slip member a and is stretched over the entire length of the anti-slip member A.

Hooks 6 and 6' are attached and fixed between the adjacent anti-slip members a and a on the inner tightening rope 1 and the outer tightening rope 3, and the inner tightening hook 6 of the inner tightening rope 1 is provided with an inner tightening hook. A rubber band 7 for attachment is attached.

As shown in FIGS. 2 and 3, the anti-slip member a is made of rubber (natural or synthetic) or synthetic resin with appropriate elasticity (e.g. polyvinyl chloride, polyurethane, etc.) and is used to secure both the inner and outer tires of the double tire B. The anti-slip member main body 5 is constructed by integrally forming a band-like shape that extends over the tread surface of b ₁ and b ₂ and along both side surfaces of the double tire B, and the non-slip member main body 5 has both inner and outer ends. A rectangular or annular latching fitting 8 is installed inside the main body 5, and a high tensile strength belt-shaped core material 9 is installed over the entire length of the main body 5 while being latched to the latching fitting 8.

An appropriate recess 5a is provided in the central part of the non-slip member main body 5 on the ground side in the width direction, and a protrusion 5b of an appropriate shape is provided on the back side, and the central tightening rope 2 is hung on this area. A mounting bracket 4 is fixedly provided as a mounting portion for fixing.

A plurality of spikes 10 are attached to the contact surface side of the anti-slip members a, a' in an appropriate zigzag shape, so that the spikes 10 are spread over a wide range on the contact surface using as few as possible. It is set up.

A tire contact prevention part 101 is integrally provided on the inside of both ends of both anti-slip members a, a', and a hook metal fitting 11 having a substantially J-shaped side surface is inserted from the inside of this contact prevention part 101 to the outside as appropriate. At the same time, the curved side end of this hook fitting 11 is attached to the inner and outer tightening ropes 1,
3 are installed and fixed respectively.

The tightening ropes 1, 2, and 3 are formed around core materials 1a, 2a, and 3a having high tensile strength, such as those formed into strings by appropriately braiding or bundling synthetic fibers such as nylon fibers, or wires. A plurality of approximately C-shaped caulking fittings 12 are caulked and fixed with one end of each bent in a bent state to hold a connecting fitting 13, which will be described later. A loop 102 is formed, and the other end side exposes the core materials 1a, 2a, and 3a over an appropriate length to form tightening adjustment portions 1b, 2b, and 3b, and connects the connector 13 with friction resistance. It is installed in a state where there is little friction.

As shown in FIG. 5, the connecting fitting 13 has a hooking portion 13b protruding from one end of a substantially rectangular main ring 13a to be attached and fixed to the mounting loop 102, and is moved toward the hooking portion 13b side of the main ring 13a. A ring 13c is provided with a fixed ring 13d vertically fitted to the other end, and is used to hold each tightening rope 1, 2, 3 when attaching the anti-slip device A to the tire B. After being hooked to the loop 102 via the hook portion 13b, each tightening adjustment portion 1b, 2
It can be tightened and fixed by pulling b and 3b.

Connecting fittings 1 to each tightening adjustment part 1b, 2b, 3b
3. The engagement mounting of the adjustment part 1 is performed as shown in FIG.
b, 2b, 3b downward (fifth
(in the figure), and then pass through the fixed ring 13d from the upper end of the moving ring 13c,
The hooking portion 13b is hooked onto the hooking loop 102 of each tightening rope 1, 2, 3, and each tightening adjustment portion 1b, 2b, 3b is adjusted so that it passes downward through the main ring 13a. When pulled against the latching loop 102, the movable ring 13c is drawn toward the fixed ring 13d, and the adjustment parts 1b, 2b, and 3b are tightened and fixed while being held between the movable ring 13c and the fixed ring 13d. It is becoming more and more common.

The tire slip prevention device A configured as described above is
As shown in Figures 8 to 8, when mounting on the double tire B, the anti-slip device A is wound around the tire B so that each anti-slip member a corresponds to the inner tire b ₁ and the outer tire b ₂ , respectively. , each tightening adjustment part 1 on one end side
After the connecting fittings 13 attached to the connectors 1b, 2b, and 3b are hooked to the hooking loops 102 on the other end, the tips of the tightening adjustment portions 1b, 2b, and 3b are pulled and fixed.

Tightening ropes 1, 2, 3 by this connecting fitting 13
The hooking loop 102 side and the tightening adjustment parts 1b, 2
Connections with the b and 3b sides are performed in the order of central tightening rope 2, inner tightening rope 1, and outer tightening rope 3, and after connecting inner tightening rope 1, before connecting outer tightening rope 3. As shown in FIG. 8, both ends of the inner tightening rubber band 7 are hooked to the locking hooks 6 at appropriate positions, so that the inside of the anti-slip tool A is tightened.

Then, the outer tightening rope 3 is connected, and finally, an appropriate number of outer tightening rubber bands 14 are hooked to each outer hook 6' as shown in FIG. Tighten to complete installation on tire B.

In this state, the anti-slip device A is such that each anti-slip member a is pulled toward the center of the tire B and the inner tire
b ₁ and outer tire b ₂ are in close contact with the tread surface of the main body and along both the inner and outer sides.

During running, each anti-slip member a grips the snowy road surface in a state perpendicular to the direction in which the tire B rotates and travels.

In addition, each anti-slip member main body 5 is made of rubber or a synthetic resin having appropriate elasticity, and each tightening rope 1, 2, 3 is formed integrally, so that the tire B is Noise, vibration, and damage to the road surface caused by collision with the road surface due to rotation are minimal, and since each anti-slip member a has a high-tensile core material 9 installed along its entire length, Each anti-slip member a has excellent durability and can withstand long-term use.

In the double ladder type tire anti-slip device A in the above-mentioned embodiment, the attachment part of the central tightening rope 2 provided at the center of the anti-slip member a was constituted by the mounting bracket 4, but as shown in FIG. A mounting hole 4' of an appropriate diameter is drilled in the width direction at the center of the contact surface side of the stop member main body 5, and the central tightening rope 2 is attached to each of the non-slip members a'' using this mounting hole 4' as a mounting part. It may be installed by being inserted across.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view showing a double ladder-type tire skid device according to the present invention, and Fig. 2 is an enlarged front view of the anti-slip device at the position between each anti-slip member (however, only the rope is a cross section). Figure 3 is an enlarged front cross-sectional view of the anti-slip member shown in Figure 2, Figure 4 is an enlarged front cross-sectional view of the anti-skid member having a mounting hole as a mounting part, and Figure 5 is an enlarged front cross-sectional view of the non-slip member shown in Figure 2. An enlarged perspective view showing the state in which the tightening adjustment part of the attached rope is engaged and connected to the connecting fitting, FIG. 6 is a front view showing the state in which the anti-slip device is attached to the double tire, and FIG. 7 is the double tire in the attached state. FIG. 8 is a side view showing the inside of the double tire in the installed state, and FIG. 9 is a partially cutaway plan view showing the conventional double ladder type tire anti-slip device. In the figure, A...double ladder type tire anti-slip device, a, a''... anti-slip member, 1... inner tightening rope, 2... central tightening rope, 3... outer tightening rope, 4... Mounting bracket (mounting part), 4'... Mounting hole (mounting part), 5a... Recess, 5b... Convex part.

Claims (1)

[Scope of utility model registration request] A plurality of anti-slip members made of a material mainly made of rubber or synthetic resin and long enough to span both tires of a double tire are attached and fixed in a ladder shape at appropriate intervals between the parallel inner and outer tightening ropes. At the same time, a recess extending in the width direction is provided on the central surface side of each anti-slip member, and a convex portion extending in the width direction is provided on the central back side thereof, in which an attachment portion for the central tightening rope is provided parallel to the inner and outer tightening ropes. A double ladder type anti-slip device for tires, characterized by its structure.