JPH0420650Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a tire skid that is attached to the outer circumference of a tire and used to prevent slipping when a vehicle runs on frozen or snowy roads. Regarding ingredients.

(Prior Art) Conventionally, as shown in Fig. 2, a tire skid device used by attaching annularly to the outer circumferential surface of an automobile tire is made of a non-metallic material such as rubber or synthetic resin and has a mesh or lattice shape. It is known that it is formed into a shape.

This tire skid device 1 has a reinforcing core material 2 made of natural fibers, synthetic fibers, metal cords, etc. arranged in a mesh or lattice shape to form a net, which is then wrapped with a non-metallic material such as rubber. It was covered.

(Problems to be solved by the invention) By the way, when a conventional tire skid device is attached to a car tire and the vehicle is driven on a snowy road surface,
The friction between the skid and the road surface causes the skid and the skid to become wet, and water accumulates between the road and the skid, resulting in a problem in that the anti-slip effect is not sufficiently achieved. Also, water accumulates between the tire and the anti-skid device,
There is a drawback that slippage occurs between the two, and the performance of the tire anti-slip device is not exhibited.

The present invention was devised in view of the above-mentioned actual situation, and its purpose is to provide a slippery surface with good drainage on the contact surface of the anti-skid device and without the accumulation of water between the tire and the anti-skid device. To provide a tire anti-skid device that can sufficiently exhibit stopping performance.

(Means for solving the problems) In order to solve the above problems, the present invention takes the following technical measures.

That is, the present invention provides a tire skid device 11 in which a net in which a core material 12 made of natural fibers or synthetic fibers is arranged in a mesh or lattice shape is covered with a non-metallic material such as rubber. At least on the side surfaces 14 and 15 of the side 13A of the grounding portion of the opposing side surface between the sides 13 forming the space S such as a mesh or lattice of the anti-slip device 11,
It is characterized by providing a plurality of grooves 16 extending from the tire contact surface side to the ground contact surface.

(Function) According to the present invention, each side 13 of the tire skid device 11
Water flows out between the tire and the anti-skid device 11 and on the surface of the anti-skid device through the cut grooves 16 provided on the side surfaces 14 and 15 of the side 13A of the ground-contacting portion of the opposite side surface between the tire and the non-slip device. does not stay. Therefore, the anti-slip performance is more than fully demonstrated.

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

The tire anti-skid device 11 illustrated in FIG. 1 is molded by a conventional manufacturing method, and a net in which a core material 12 made of natural fibers, synthetic fibers, metal cords, etc. It is covered with a non-metallic material. At least the side surface of the grounding portion of the opposing side surface between the sides 13 forming the mesh space S of the anti-slip device 11, and the side surface of the side 13A that is oblique to the longitudinal direction of the anti-slip device 11. 1
4 and 15, a plurality of grooves 16 are provided in parallel from the tire contact surface side to the ground contact surface. The number of cut grooves 16 is determined by taking into consideration the length and strength of each side 13, and the width and depth of the cut grooves 16 can also be determined as appropriate depending on the strength, the position of the core material 12, etc. Designed.

Further, the cut grooves 16 do not need to be provided at both ends in the width direction of the stopper 11, which serves as the ring hook hook portion 17, which has two sides 13B forming an outer frame in each mesh space S. That is, the ring hook locking part 17 is mostly located in the sidewall part of the tire and does not come into contact with the road surface, so it has no effect on the anti-slip effect.

Furthermore, although it is sufficient to have one cut groove 16 in each mesh space S, it is preferable that the cut groove 16 be provided on both sides in the width direction in the large mesh space S arranged at the center of the anti-slip tool 11.

According to the embodiment of the present invention, it is possible to improve drainage of the contact surface of the anti-slip device 11, prevent water from accumulating between the tire and the anti-slip device 11, and fully exhibit anti-slip performance. Furthermore, tire skid device 11
Since the cut grooves 16 are formed on the side surfaces of the spaces forming the mesh or lattice, etc., an air venting effect occurs during molding and vulcanization of the anti-slip tool 11, thereby eliminating minor defects or repairable defects caused by air pockets. It is possible to prevent defects such as weight loss and insufficient weight, and improve quality.

As shown in FIGS. 2 to 5, when the non-slip tool 11 is molded, non-metallic material such as rubber protrudes from the mating surfaces of the upper mold 18 and lower mold 19, and this protruding piece 20 It remains without being sufficiently separated from the tool 11, resulting in an unsightly appearance and a quality problem. Completely removing this protruding piece 20 requires a special jig and a considerable amount of effort. The lower mold 19 has a non-slip cavity 21.
A protruding cavity 22 of rubber or the like is formed around the cavity 21, but this is because the distance L between the cavity 21 and the cavity 22 is long and the protruding thickness t is large. Therefore, the space 22 where the rubber etc. of the lower mold 19 protrudes
As shown in FIG. 7, the shape is such that an inclined surface 23 is formed on the side wall surface of the cavity 21, and
By reducing the distance L and the protrusion thickness t, the boundary between the stopper 11 and the protruding piece 20 becomes thinner, and the protruding piece 20 can be reliably separated.

Therefore, the protruding piece 20 can be completely separated to provide a well-finished non-slip tool 11 without any extra effort.
can be formed reliably, and quality can be improved.

As shown in FIG. 8, hook engagement holes 25 for engaging the connecting members are provided at both widthwise ends of the connecting portions 24 at both longitudinal ends of the tire antiskid device 11. As shown in FIG. By the way, this hook engagement hole 25 is designed so that when the skid stopper 11 is attached to a tire and the car is driven, the skid stopper 11 is removed from the tire due to contact with the road surface and centrifugal force caused by high-speed driving. It may break due to the stress caused when it floats up.

Therefore, as illustrated in FIG. 8, a reinforcing member 26 is inserted into the both end connecting portions 24 and passes through the outside of the hook engaging hole 25 in the width direction, and connects the both end engaging holes 25.
(eg, steel wire, glass fiber, or similar material) prevents the hook engagement hole 25 from breaking. Similarly,
As shown in FIG. 9, breaking of the hook engaging hole 25 can also be prevented by embedding a ring-shaped reinforcing material 27 in the outer periphery of each hook engaging hole 25. In this way, the strength of the both end connecting portions 24 and the hook engaging hole 25 portion of the tire anti-slip device 11 can be ensured, and the durability of the anti-slip device 11 can be improved.

(Effect of the invention) As described above, the tire skid device according to the invention has at least the side surfaces 14 and 15 of the ground contact portion of the space S such as the mesh between each side 13 forming a mesh or lattice.
There is a cut groove 16 extending from the tire contact surface side to the ground contact surface.
Since multiple rows are provided, water drainage on the contact surface of the anti-slip device 11 is improved, water does not accumulate between the anti-slip device 11 and the tire, and the anti-slip effect can be fully demonstrated, making vehicle running safer. In addition, it is possible to improve quality by eliminating air pockets during molding and vulcanization.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main parts showing an embodiment of the present invention;
Figure 2 is a perspective view showing the protruding piece remaining, Figure 3
The figure is a cross-sectional view taken along the line A-A in Figure 2, Figure 4 is a cross-sectional view of essential parts showing an example of a mold for forming a slip stopper, Figure 5 is an enlarged view of part B in Figure 4, and Figure 6 is a slider. FIG. 7 is a cross-sectional view of the essential parts of an improved example of the mold for molding a stopper, FIG. 7 is a cross-sectional view corresponding to FIG. FIG. 10 is a partially omitted plan view showing a conventional example. 11...Tire anti-slip device, 12...Core material, 13,
13A...side, 14, 15...side surface, 16...cut groove, S...space such as mesh.

Claims (1)

[Scope of utility model registration request] In a tire skid device 11 formed by covering a net in which a core material 12 made of natural fibers or synthetic fibers is arranged in a mesh or lattice shape with a non-metallic material such as rubber, the mesh of the skid device 11 is Alternatively, a plurality of cut grooves 16 extending from the tire contact surface side to the contact surface are provided on the side surfaces 14 and 15 of at least the ground contact portion of the side 13A on the opposing side surface between the sides 13 forming the space S such as a lattice. Characteristic anti-skid device for tires.