JPH0669771B2 - Tire non-slip - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire non-slip member which is used by being wrapped around an automobile tire.

[0002]

2. Description of the Related Art Recently, a non-metal tire slipper having a large number of mesh portions such as a ladder type or a hexagonal type has been attracting attention in place of a metal chain when traveling on a snowy or icy road surface. As a conventional non-metal tire non-slip tool, Shokai Sho-18
There is a technique disclosed in Japanese Patent Laid-Open No. 0610, in which a large number of mesh-like portions are formed through a lug portion (rib portion) by a linear material in which a core material is covered with a coating material such as rubber.

[0003]

In the conventional anti-skid device for a tire, the core material is crossed at the intersection of the lug portions (rib portions), and even if the core material is covered with a coating material, the cloth There is a high possibility that the core materials will come into contact with each other at a portion, and if the contact is repeated, the core material may be broken.

Further, when the core material crosses at the intersecting portion, the coating thickness of the rubber or the like at the crossing portion and the non-crossing portion is different, and the coating thickness at the crossing portion is inevitably thin. The material could be exposed. Therefore, the present invention is
By providing a core material embedded in the lug portion in parallel without crossing at the lug portion and the intersection portion, contact between the core materials is prevented and the core material is prevented from being exposed to improve the durability of the tire. The purpose is to provide a tool.

[0005]

According to the present invention, a cord-shaped or rod-shaped wire which is mounted on a tread portion 2 of a tire 1 and covered around a core material 12 with a coating material 13 made of a non-metallic material having elasticity. A large number of mesh-like parts through the lugs 14, 16, 16A by the strip material
In order to achieve the above-mentioned object, the tire non-slip device 8 formed with 15, 17, 18 adopts the following technical means.

That is, according to the present invention, the anti-skid body 9 corresponding to the tread portion 2 has a central mesh shape in which axial lug portions 14 extending in the tire axial direction are arranged at intervals in the tire circumferential direction. A portion 15 is formed, and at least two core members 12 are embedded in the covering material 13 in parallel and in non-contact with each other in the axial lug portion 14 in parallel with each other, and the axial lug portion is formed.
The spike tool 26 is embedded in the covering material 13 between the core members 12 of the anti-skid body 9 while being extended without crossing at the intersection 16B at the end of 14.

[0007]

Operation The anti-skid device 8 according to the present invention is the tire 1 shown in FIG.
The anti-skid body 9 is made to face the tread portion 2 and is used in a circular shape. The edge action of the axial lug portion 14 of the anti-skid body 9 prevents slipping on snowy roads and the like, and the spike tool 26 provides strong anti-slip.

Since the core material 12 of the axial lug portion 14 is covered with the covering material 13 in parallel and in non-contact with each other and the core material 12 is not crossed, the coating thickness is as shown in FIG. 1 (B). Is sufficient and substantially uniform, the core materials 12 are prevented from contacting each other even if the covering material 13 elastically deforms. Further, the core material 12 is not crossed even at the intersecting portion at the end of the axial lug portion 14, and the embedding strength of the spike tool 26 shown in FIG. 1C is secured between the core materials 12, and the spike tool 26 is secured. To prevent the core material 12 from coming into contact with each other.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. In FIG. 3, 1 is a tire and tread portion 2
The cross-section has a toroidal shape having both shoulder portions 3, both sidewall portions 4 and both bead portions 5, and both bead portions 5 are fitted to the bead seats of the rim 6.

Reference numeral 7 indicates a disk. Figure 1
In (A), 8 is a non-slip member according to the present invention in the form of a strip in a deployed state, which is located on (corresponding to) the tread portion 2 in FIG. 3, the body portion 9, both shoulder portions 3 and both sidewalls. Side edges 1 located on part 4 respectively
It has 0 and 11.

As shown in FIGS. 1B and 1C, the non-slip member 8 is covered with a covering material 13 made of a non-metallic material having elasticity on the core material 12. The core material 12 extends in a net shape. There is. Core material 12
Is made of a synthetic fiber such as polyester, nylon or rayon or a natural fiber in a mesh shape, and the covering material 13 coated on the core material 12 is made of rubber, synthetic resin, or other non-metallic material having elasticity. It may be a mixture of short fibers (glass fiber, etc.). It should be noted that the core material 12 may be a rubber-coated cord, and in any case, it is desirable that the core material 12 has little stretchability (non-stretchability).

The main body 9 is a tire 1 as shown in FIG.
A mesh portion 15 is continuously provided in the circumferential direction (longitudinal direction of the belt) by arranging axial lugs (ribs) 14 parallel to the axial direction of the tire 1 at intervals in the circumferential direction. ing. On both side edge parts 10 and 11, diagonal lugs (ribs) 16 and axial lugs (ribs) 16A, which are connected to the axial lugs (ribs) 14 in an oblique direction, are arranged in rows through intersections 16B. In this example, the hexagonal (turtle-shaped) meshed portion 1 corresponding to the shoulder portion 3 and the sidewall portion 4 by being installed is provided.
7,18 are provided in a row in the circumferential direction (longitudinal direction of the belt).

In the axial lug portion 14, the core material 12 is parallel to each other and in a non-contact state, as shown in FIG.
Is stretched without crossing at the intersection 16B, and the spike tool 26 is embedded in the coating material 13 between the core materials 12 of the anti-skid body 9. Here, regarding the crossing angles A, B, C of the respective mesh portions 15, 17, 18 in the tire axial direction, the angle A of the main body portion 9 is the smallest, and the relationship of A <B <C is established.

Each hexagonal mesh portion 15, 17, 18
Of the main body 9 is maximized to increase the circumferential deformation amount, and the mesh portion 17 on the shoulder portion 3 is next increased to curb the vehicle in which the circumferential deformation amount is suppressed to some extent. Even when the tire 1 is prevented from slipping, it acts as an anti-skid, and the outermost mesh portion 18 is minimized to reduce the amount of deformation in the circumferential direction, which prevents the anti-skid device 8 from coming off. .

The cross-sectional shape of the above-mentioned lug portion is a substantially trapezoidal shape in which the tire surface side is wide and the non-tire surface side is narrow. 19 is a lug for connection, which has a trapezoidal cross section,
As shown in FIG. 1, it has a connecting hole 20 and is connected to each other by a connecting fitting 21 having a hook which can be engaged with and disengaged from the connecting hole 20, and the connecting hole 20 and the connecting fitting 21 constitute a connecting means 22. ing.

Although the connecting means 22 is provided corresponding to both the shoulder portions of the tire, it may be provided corresponding to the tread portion. 23 is a side rope, as shown in FIG.
As shown in (1), the rope ends on the both outer sides of the rim 6 are detachably connected by the connection tool 24 shown in FIG. Then, the side ropes 23 and the mesh portions 18 on both side edge portions 10 and 11 are connected to each other inside and outside in the radial direction by the connecting members 25, so that the slip stopper 8 is mounted on the tire 1.

In addition, as shown in FIG. 1 (C), the spike tool 26 has a collar portion 27, a body portion 28 having a smaller diameter than this, and an insertion portion 29. As shown in FIG. It is provided at the intersection 16B, etc. at the end of 14. Further, reference numeral 30 is a mounting hole, which is penetrated by the connection lug 19 and is adapted to removably mount one end of the connector 25.

The anti-skid device 8 described above is manufactured as follows. In FIG. 4, reference numeral 31 is a preforming table, which has an engaging portion 32 for forming the above-mentioned hexagonal mesh portions 15, 17, 18 and the like. That is, in the present embodiment, the engaging portion 32A corresponding to the axial lug portion 14, the diagonal lug portion 16
In this example, the engaging portion 32B corresponding to, the engaging portion 32C corresponding to the axial lug 16A and the engaging portion 32D corresponding to the connecting lug 19 are provided as a groove structure, and the core material 12 is not vulcanized. Coating material
A string-shaped or rod-shaped net constituent material 33 covering 13 is stretched around the engaging portions 32A to 32D, and a large number of mesh portions 34 corresponding to the mesh portions 15, 17, 18 of the anti-skid 8 are formed. Having a net
35 is created on the forming table 31 in advance.

In this case, as shown in FIG. 5, even if the engaging portion 32 fits two net constituent materials 33 into one groove and stretches them around, each of the two net constituent materials 33 as shown in FIG. Even if it is fitted in the groove and stretched around,
At the cross portion of reference numeral 35 ', two net constituent materials 33 may be fitted in two grooves in two steps and stretched in a crossed state as shown in FIG.

In any case, one or a plurality of net constituent materials 33 are stretched around the engaging portion 32 shown by the groove of the preforming table 31 in the first embodiment, and at the appropriate positions of the parallel portion or the cross portion, For example, the tape 36 shown in FIG. 8, the adhesive 37 shown in FIG. 9, and the fasteners 38 shown in FIG. 10 are coupled to each other so that the mesh portions 34 of the net 35 are not separated from each other.
It is formed on the preforming table 31.

In this case, the tape 36 may be a rubber tape only, but may be a tape made of nylon, polyester or the like on which a thin unvulcanized rubber sheet is attached. A part of the covering material 13 may be coated with an adhesive to form a tool. They may be pressed together with each other and adhered to each other. The point is to prevent the mesh portions 34 of the net 35 stretched around the preforming table 31 from separating from each other.
Anything can be used as long as it is molded at 31.

Further, the engaging portion 32 of the preforming table 31 has a groove shape in the embodiments of FIGS. 4 to 7, but FIG. 11 and FIG.
In order to form each mesh part 15,17,18 as shown in,
The engagement portion 32 may be configured by screwing or driving the projection 36 on the preforming table 31. When the engaging portion 32 shown by the protrusion 36 is used, the net constituent material 33 is stretched around to form the mesh portion 34 as shown in FIG. 11, and the parallel portion or the cross portion is illustrated in FIGS. 8 to 10. Combine in the same way.

Further, the engaging portion 32 may be a combination of a groove and a protrusion as shown in FIG.
In any case, the net constituent material on the preforming table 31
The mesh portion 34 is stretched around 33 and corresponds to the shape of the anti-skid device 34.
A net 35 is formed, and the net 35 is formed on the molding table 31.
After further removing, as shown in FIG. 14, the net 35 is loaded and set in the forming groove 38 of the heating press die 37 corresponding to the shape of the anti-skid 8 as shown in FIG. The upper mold 39 is clamped, and heating and vulcanization are performed to integrally form each lug portion having a trapezoidal cross section as shown in FIG.
20, 30 and the like will be formed by the pins 39A formed on the upper mold 39.

After press molding, it is removed from the press mold as usual. In the above embodiments, the number of net constituent materials 33 and the cross-sectional shape are arbitrary,
Therefore, the cross section may be a trapezoid, an ellipse, or a quadrangle other than the circular shape in the drawing. Further, the shape of the groove 38 of the press die 37 is determined by the cross-sectional shape of each lug portion of the anti-skid 8, and the shape of the engaging portion 32 of the preforming table 31 is also the shape of the slide to be manufactured. It is set according to the mesh shape of the stopper 8, and therefore the shape, arrangement, etc. of the mesh portion 34 may be other than those shown in the drawing.

[0025]

According to the present invention, since the core material of the axial lug is uniformly covered with the coating material, the core material is surely prevented from being broken or broken due to the exposure of the core material or the contact of the core materials. it can.
Further, the external force acting on the spike tool can be suppressed by the core material.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (A) is a developed plan view,
(B) is XX of FIG. 1 (A), (C) is Y- of FIG.
It is a Y sectional view.

FIG. 2 is a side view of a tire mounted state.

FIG. 3 is a sectional view taken along line S-S in FIG.

FIG. 4 is a plan view of a preforming table.

5 is a sectional view taken along line ZZ of FIG.

6 is a sectional view taken along line ZZ of FIG. 4, showing another first example.

FIG. 7 is a cross-sectional view of a portion 35 'of FIG.

FIG. 8 is a sectional view taken along line ZZ in FIG. 4, showing another second example.

9 is a sectional view taken along line ZZ of FIG. 4, showing another second example.

10 is a sectional view taken along line ZZ of FIG. 4, showing another second example.

11 is a plan view showing another example of FIG. 4. FIG.

12 is a sectional view taken along line ZZ of FIG.

FIG. 13 is a sectional view taken along line ZZ in FIG. 11, showing another example.

FIG. 14 is a plan view of a vulcanizing press.

FIG. 15 is a cross-sectional view before vulcanization.

FIG. 16 is a cross-sectional view during vulcanization.

[Explanation of symbols]

 1 tire 2 tread part 8 anti-slip device 9 anti-slip device body part 12 core material 13 covering material 14 lug part 15 mesh part 16 lug part 26 spike tool

Claims (1)

[Claims] 1. A cord-shaped or rod-shaped wire which is mounted on a tread portion (2) of a tire (1) and is covered with a covering material (13) made of a non-metallic material having elasticity around a core material (12). Rug part by strip material
(14), (16), (16A) through a number of meshes (15), (17),
In the tire anti-skid 8 in which (18) is formed, the tread part (2) and the corresponding anti-skid device main part (9) have an axial lug portion (14) extending in the tire axial direction and a tire circumferential direction. Are arranged at intervals in the direction to form a central mesh portion (15), and the axial lug portion (14) has at least two core members (1
2) are embedded parallel to each other in a non-contact state in the covering material (13) and stretched without crossing at the intersection (16B) at the end of the axial lug portion (14) to prevent slippage. Spike tool on the covering material (13) between the core materials (12) of the tool body (9).
(26) is embedded, a non-skid device for a tire.