JPH11123912A - Antiskid apparatus for tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the rope-shaped member such as a tightening rope arranged inside or outside a tire from being brought into contact with the rim flange or the like of the tire wheel, so that the damage thereof can be prevented. SOLUTION: In a belt-shaped net body 3 for covering the outer circumference of a tire 2, a plurality sheets of nonmetallic net constituting pieces 6 having a circumferential length shorter than that of the tire 2 are juxtaposed, and inner connecting parts 12 to which inner rope-shaped member 4 is endlessly connected to the net body 3 on the inside of the tire 2 is widthwise formed on the one end of the respective net constituting pieces 6, and outer connecting parts 13 to which outer rope-shaped members 5 for endlessly connecting the net body 3 on the outside of the tire 2 are widthwise formed on the other end of the respective net constituting pieces 6, and the number of the inner connecting parts 12 is made to be larger than that of the outer connecting parts 13. Further, the inner connecting parts 12 are formed between the tire circumferential both ends of the net constituting pieces 6 and the halfway part in the tire circumferential direction, and the connecting part 12 in the halfway part is provided in a position widthwise nearer to the center than that of the connecting parts 12 at both ends of the net constituting pieces 6 in the circumferential direction of the tire.

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 which is mounted on a tire of an automobile or the like to prevent slipping on an icy or snowy road surface. More particularly, the present invention relates to a tire having a plurality of net components arranged circumferentially. The present invention relates to a split-type tire anti-slip device for covering a tire.

[0002]

2. Description of the Related Art As a non-metallic tire anti-slip device, for example, there is one disclosed in Japanese Utility Model Laid-Open No. 63-32906. This is a divided type in which a core material is coated with rubber or synthetic resin to form a net having an appropriate length smaller than the tire outer peripheral length, and an appropriate number of the nets are connected and fixed in a ring shape. And one end in the width direction of each net body (a part arranged inside the tire) is 3 in the tire circumferential direction.
An inner connecting portion is formed to connect the fastening ropes at four or four locations, and the other end in the width direction of each net body (portion disposed outside the tire) is connected to the same number as the inner connecting portions at left-right symmetric positions. An outer connection portion is formed to hang the band.

[0003] Then, a non-slip device is wound around the tire, and both ends of a tightening rope are engaged with the inside of the tire to form an endless shape. On the outside of the tire, a connecting band or the like is hooked on an outer connecting portion to tighten the tire. A non-slip device is attached to the outer periphery of the device.

[0004]

When a non-slip device is mounted on a tire, the tightening rope and the connecting band are pulled outward by the inner and outer connecting portions in the radial direction of the tire, and between the connecting portions adjacent in the tire circumferential direction. It is straight, and is arranged so as to draw a polygonal shape surrounding the periphery of the rim flange of the tire wheel. Therefore, the fastening rope and the connecting band are closest to the rim flange at the linear portion between the connecting portions than at the position of the connecting portions.

[0005] Therefore, when the non-slip device is mounted eccentrically with respect to the tire, the rope or the like may come into contact with the rim flange, thereby causing friction between the rope or the like and the rim flange. And the like, and causes inconveniences such as abrasion and damage to the rim flange. Depending on the type of vehicle, the gap between the rim flange inside the tire and the suspension in the tire house may be small. In this case, the tightening rope may come into contact with the suspension etc. by approaching the rim flange. The possibility of damage to the rope and damage to the rim flange, etc., as described above, is more likely to occur on the inside of the tire than on the outside of the tire, since the tightening rope may be damaged by contact with this suspension. Was high.

By the way, tightening ropes and connecting bands are
Since the connecting portion adjacent in the tire circumferential direction is linear and approaches the rim flange, it is possible to solve the problem of approaching the rim flange by increasing the number of connecting portions such as ropes. However, in general, in a split type anti-slip device, since the same number of inner and outer connecting portions are formed at both left and right symmetrical positions at both ends in the width direction of the net body, the number of inner and outer connecting portions is reduced by applying the above means. Excessive increase will increase the weight of the entire non-slip device, and on the outside of the tire, it will be necessary to hang the connecting bands one by one on the outer connecting portion, so it will take time to mount the tire In practice, the above-mentioned means has been difficult to employ.

Further, in the conventional split-type non-slip device, when the respective net members are deployed, the connecting portions at one end in the width direction of the net member are respectively arranged in parallel with the longitudinal direction of the non-slip device. Therefore, even when each net body is covered along the curved surface of the outer periphery of the tire, the connecting portions are substantially aligned side by side without being along the arc of the rim flange, and are more intermediate than both ends of the net body in the tire circumferential direction. The position of the part was arranged near the rim of the tire.

For this reason, even if the number of hooks of the rope or the like is simply increased, the rope or the like cannot be sufficiently separated along the arc of the rim flange. However, there is a possibility that the rope or the like may come into contact with the rim flange. The present invention has been made in view of various problems and circumstances relating to the above-described split-type tire anti-slip device, and a cord-like member such as a fastening rope on the tire inner side or the tire outer side has a rim flange of a tire wheel. The purpose of the present invention is to prevent contact with the like and prevent such damage.

[0009]

The present invention employs the following technical means to achieve the above object. First of the present invention
The technical means comprises a belt-shaped net body covering the outer periphery of the tire, a plurality of non-metallic net constituent pieces having a circumferential length shorter than the circumferential length of the tire are arranged side by side in the tire circumferential direction. And, at one end in the width direction of each net component, an inner connecting portion is formed in which an inner cable-like member that connects the net body endlessly at the inner portion of the tire is connected, and the other end in the width direction of each net component is formed. In a tire anti-slip device having an outer connecting portion to which an outer cable-like member that connects the net body endlessly at the outer portion of the tire is connected, the number of inner connecting portions in each net component piece is equal to the outer connecting portion. It is characterized by being formed more than the number of parts.

[0010] According to this, when the tire anti-slip device is mounted on the tire, the number of the inner connecting portions is increased inside the tire so that the inner cable-like member is disposed substantially along the rim flange of the tire wheel. Thus, on the outside of the tire, the number of outer connecting portions is smaller than that of the inner connecting portions, so that the time required for connecting the outer cable members is reduced. That is, while preventing the inner cord-shaped member from approaching the rim flange and preventing the inner cord-shaped member from approaching the rim flange on the inner side of the tire where the inner cord-shaped member is relatively easily damaged, the outer cord-shaped member and the like are more damaged than the inside of the tire. On the outside of the tire, where the possibility of the occurrence of the slip is low, the number of connections of the outer cord-like members is reduced to improve the mountability, and further, the weight increase of the anti-slip device is suppressed.

According to a second technical means of the present invention, in addition to the above-mentioned first technical means, the inner connecting portion is formed at both ends in the tire circumferential direction of the net constituting piece and a halfway portion in the tire circumferential direction. In the deployed state of the net component, the inner connecting portion of the halfway portion is provided closer to the center in the width direction than the inner connecting portion of the both end portions. According to this, when the net constituent piece is covered along the outer periphery of the tire, the inner cable-like members connected to the respective inner connecting portions are arranged in a state more along the arc of the rim flange of the tire wheel. As a result, it is possible to reliably prevent the inner cord-shaped member from contacting the rim flange.

[0012] A third technical means of the present invention is to provide a belt-shaped net body for covering the outer periphery of a tire by forming a non-metallic net component having a circumferential length shorter than the circumferential length of the tire in the tire circumferential direction. A plurality of side-by-side tires, each having a widthwise end portion of each net component piece, and a connecting portion to which a rope-like member that connects the net body endlessly at the side of the tire is formed. In the fixture, the connecting portion is formed at both ends in the tire circumferential direction of the net component piece, and at an intermediate portion in the tire circumferential direction, and in a deployed state of the net component piece, the connecting portion of the halfway portion has the two end portions. Are provided closer to the center in the width direction than the connecting portions.

[0013] According to this, when the net component piece is covered along the outer periphery of the tire, the cord-like member connected to the connecting portion inside or outside the tire is further extended along the arc of the rim flange of the tire wheel. As a result, the cord-shaped member is reliably prevented from contacting the rim flange. According to a fourth technical means of the present invention, in addition to the third technical means, the connecting portion is an inner connecting portion arranged inside a tire. According to this, it is possible to more reliably prevent damage to the cord-like member inside the tire that is arranged in the tire house and may come into contact with the suspension or the like.

[0015] The fifth technical means of the present invention is the above-mentioned first and second aspects.
In addition to the second or fourth technical means, a grounding opening that avoids a ground contact portion of the tire when the net main body is mounted on the tire is provided between the net constituent pieces in the tire circumferential middle part of the net main body. The inner connection portion of the net component piece formed and adjacent to the grounding opening is connected to at least the one closest to the grounding opening so as to allow movement in the tire circumferential direction with respect to the cord-like member. At least one inner connecting portion other than the inner connecting portion is fixed to the cord-like member.

According to this, by moving the inner connecting portion on the opening side in the tire circumferential direction with respect to the fastening rope, the net constituting piece adjacent to the opening can be bent to expand the opening. Thus, the rope-shaped member can be easily fastened while avoiding the contact portion of the tire, and the slip stopper can be properly positioned with respect to the tire. In addition, since at least one of the inner connecting portions of the net component is fixed to the cord-like member, the anti-slip device is adapted to the tire by running after the anti-slip device is attached, and the bent net component is Can be returned to the original state (the state before the opening is expanded).

[0016]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a first embodiment of the present invention. As shown in FIG. 2, a tire anti-slip device 1 is a belt-shaped net body 3 that covers the outer periphery of a tire 2.
And one end side in the width direction of the net body 3 (inside of the tire 2)
Non-extensible fastening rope (inner cord-like member) 4
And a tightening band (outer cable-like member) 5 that is hooked to the other end in the width direction of the net main body 3 (outside of the tire 2) and pulls the other end toward the tire center.

The net body 3 is of a split type in which six net forming pieces 6 are arranged side by side in the longitudinal direction (tire circumferential direction). Both ends are connected to each other via a connection fitting 7 and the fastening rope 4 at both end positions in the width direction to be integrated. Further, the space between the net components 6 at the central portion in the longitudinal direction of the net main body 3 is slightly widened. In this portion, the net components 6 are connected by the fastening ropes 4 without using the connection fittings 7. The space at the center in the longitudinal direction forms a grounding opening 8 described later.

As shown in FIG. 1, each net constituting piece 6
It is formed by coating a core material (not shown) stretched in a predetermined net pattern with a nonmetallic elastic material such as synthetic rubber or natural rubber. A central portion of the net component 6 in the width direction is a tread corresponding region (ground contact region) 9 corresponding to the tire tread and in contact with the ground, and both sides in the width direction of the tread corresponding region 9 correspond to shoulder portions of the tire 2. An inner connecting portion 12 and an outer connecting portion 13 for connecting the fastening rope 4 and the tightening band 5 corresponding to the sidewall portion of the tire on both sides in the width direction of the shoulder corresponding region 10 are formed. The side wall corresponding region 11 is formed. The tread corresponding region 9 is a portion that performs a main anti-slip function as the anti-slip device 1, and a plurality of spike pins 9a are embedded in the portion.

Both ends in the longitudinal direction of the net constituting piece 6 are formed in a narrow band shape extending in the width direction.
On one side in the width direction (outside of the tire), the connecting metal fitting 7 for connecting the respective net constituting pieces 6 to each other is provided. Further, both ends of the band-shaped portion 14 are located at the outermost ends in the width direction of the non-metal portion of the net constituting piece 6. And
At the net intersection 6a located at the position from the tread corresponding region 9 to the shoulder corresponding region 10 at the center of the net component piece 6 in the tire circumferential direction, an inclined portion 6b extending while being inclined outward and in the front-rear direction in the width direction is provided. The front and rear ends of the inclined portion 6b are connected to both ends of the band portion 14.

One end of the band portion 14 in the width direction (outside the tire)
Is provided with a hook 15 for hanging the tightening band 5. One end of the band-shaped portion 14 and the hook 15 constitute the outer connecting portion 13. That is, the outer connecting portions 13 are formed at two locations on both ends in the longitudinal direction of the net on one net component piece 6.

The other end in the width direction of the band portion 14 (inside the tire).
Is provided with a connecting member 16 for connecting the fastening rope 4, and the inner connecting portion 12 is constituted by the connecting member 16 and the other end of the band portion 14. The inclined portion 6 is provided at the center of the net component piece 6 in the longitudinal direction of the net.
b, a pair of front and rear engaging pieces 17 are provided that project outward in the width direction while being inclined in the direction opposite to the inclined portion from the middle of b.
The front ends of the front and rear pairs of hooking pieces 17 cross each other to form a substantially V-shape, and a connecting tool 16 is also provided at this crossing portion.

Therefore, the hook 17 and the connecting member 1
6 also constitutes the inner connecting portion 12, and the inner connecting portion 12 is formed at three places, one end portion in the longitudinal direction of the net and the center portion, for one piece of the net component 6. As shown in FIG. 2, each of the two net constituent pieces 6 near the end in the longitudinal direction of the net fixes the connecting tool 16 of the inner connecting portion 12 to the fastening rope 4 by caulking. The net portion 6 is fixed to the band portion 14 and the hooking piece 17 by caulking so as not to move in the longitudinal direction of the rope.

The two net component pieces 6 sandwiching the opening 8 at the center in the longitudinal direction of the net fix the connecting tool 16 of one inner connecting portion 12a on the side opposite to the opening to the fastening rope 4 by caulking. The connecting member 16 is fixed to the band-like portion 14 by caulking, and the two inner connecting portions 12 b on the opening side are connected to the fastening rope 4.
Are connected so as to be able to move in the longitudinal direction.
As shown in FIG. 5A, the inner connecting portion 12b is configured to be movable with respect to the fastening rope 4 by connecting a connecting ring portion 16a formed at one end of the connecting tool 16 to the fastening rope 4 in the longitudinal direction ( (Direction of arrow b) A configuration in which the connecting ring 16b at the other end of the connecting tool 16 is loosely fitted so as to be swingable as shown by arrow a in the hole 14a formed in the band-like portion 14 so as to be freely movable. Has adopted. Also, with regard to the inner connecting portion 12b at the center in the tire circumferential direction, the connecting ring portion 16a at one end side is loosely fitted to the fastening rope 4 so as to be movable in the longitudinal direction (the direction of arrow b), and the connecting ring portion 16b at the other end side is hung. As shown by the arrow a, it is configured to be loosely fitted to the intersection of the stop pieces 17 so as to swing freely.

Therefore, at the connecting portion between the fastening rope 4 and the connecting member 16, the inner connecting portions 12b, 12b can slide along the fastening rope 4 in the longitudinal direction (the direction of arrow b), and the belt-like portion 14 is formed. In addition, in the connecting portion between the hooking piece 17 and the connecting tool 16, the inner connecting portion 12b can move in the longitudinal direction with respect to the fastening rope 4 by the swing of the arrow a.

When the inner connecting portion 12b on the opening side can be moved in the longitudinal direction of the rope with respect to the fastening rope, the net constituting piece 6 is bent along the fastening rope 4 via these inner connecting portions 12b. By doing so, the grounding opening 8 can be expanded, which is useful when attaching a non-slip device to be described later. In addition, the inner connecting portion 1 on the movable side
As shown in FIG. 5 (b), the fastening rope 4
The connecting ring 16a at one end of the connecting member 16 is loosely fitted in the longitudinal direction so as to be movable in the longitudinal direction, and the connecting member 16
5C, one end of the connecting member 16 is fixed to the fastening rope 4 by caulking, and the other end of the connecting member 16 is connected to a hole 14a formed in the band-shaped portion 14, as shown in FIG. It is also possible to replace the ring portion 16b with a configuration in which the ring portion 16b is inserted so as to be swingable in the direction of arrow a. Although not shown, the same configuration can be applied to the central inner connecting portion 12b.

Also, one inner connecting portion 12 close to the opening 8 is connected to the fastening rope movably in the longitudinal direction as in each of the above constructions, and the other two inner connecting portions on the side opposite to the opening are connected to the fastening rope. It is also possible to adopt a configuration in which the movable member 4 cannot be moved while being fixed by swaging. In the unfolded state of the net component piece 6 shown in FIG. 1, the hook pieces 17 of the inner connecting portion 12 at the center in the longitudinal direction of the net are wider than the end positions of the band-like portions 14 of the inner connecting portion 12 at both ends in the longitudinal direction of the net. They are arranged closer to the center (closer to the ground area), and the connecting members 16
Also, the connecting portion of the inner connecting portion 12 at the center is larger than that of the inner connecting portion 12 at both ends by α as shown in FIG.
Only on the inner side in the width direction.

Therefore, the fastening rope 4 connected to the three connecting members 16 bends inward in the width direction at the position of the center connecting member 16 even when the net constituting piece 6 is deployed. I have. At one end of the fastening rope 4, there is provided a loop portion 4a formed in a loop shape by folding back, and at the other end portion, a hook 4 engaging with the loop portion 4a is provided.
b is provided.

The tightening band 5 has a single band body 18.
And a buckle member 19 for forming the band body 18 in a ring shape.
The band body 18 is formed with a non-stretchable rope 18a at the center in the longitudinal direction, and both ends of the rope 18a are formed with elastically stretchable members 18b made of rubber or the like. . And the rope portion 18 of the band body 18
a is formed in a ring shape with a buckle member 19 interposed therebetween, and both ends of the band body 18 are made to protrude from the buckle member 19, and the diameter of the ring-shaped portion 5 a is reduced by pulling the both ends of the band body 18 away from each other. The buckle member 19 is configured so as to be small and locked in the direction of increasing the diameter. The buckle member 19 is provided with a pair of engagement hooks 20 that can be engaged with the net body 3.

The two net components 6 sandwiching the opening 8
, A hooking member 21 is provided separately from the hooking hook 15 at an end of the belt-shaped portion 14 corresponding to the outside of the tire. Further, the two net constituting pieces 6 at both ends of the net main body are not provided with the hooks 15 constituting the outer connecting portion at the outer end in the longitudinal direction of the net, and the buckle member 19 is engaged with this portion. Engagement hole 2 with which hook 20 is engaged
2 are formed.

Hereinafter, a case where the above-mentioned tire anti-slip device is mounted on a tire will be described. First, the anti-slip device 1 is laid on the ground in the front-rear direction such that the grounding opening 8 in the center of the net body 3 corresponds to the grounding portion of the tire 2, and the fastening rope 4 is formed on the inner side (back side) of the tire 2. The hook 4b is engaged with the loop 4a while lifting both ends. At this time, the net constituting piece 6 adjacent to the grounding opening 8 connects the two inner connecting portions 12b on the opening side to the fastening rope 4 so as to be movable in the longitudinal direction. By flexing the opening 6 to expand the opening 8, the connecting rope 4 can be easily connected in a ring shape while avoiding the tire contact portion, and is prevented from slipping at an appropriate position without being eccentric with respect to the tire 2. The tool 1 can be mounted.

After connecting the fastening rope 4 on the back side, the engaging hook 20 of the buckle member 19 of the tightening band 5 is connected.
Is hooked on the engaging hole 22 of the net forming piece 6 (one of the engaging hooks 20 may be hooked in advance), and the outer connecting portion 13 is hooked in a state where the loop portion 5a of the tightening band 5 is slightly loosened. Hook on hook 15. Then, after the loop portion 5a is hooked on all the hooks 15, the both ends of the band 18 are pulled to narrow and tighten the loop portion 5a, thereby bringing the net body 3 into close contact with the outer periphery of the tire.

After that, while the both ends of the remaining band member 18 are successively hooked on the hooks 15, the distal ends of the elastic members 18 b intersect and the hooks 21 of the net constituting piece 6 adjacent to the opening 8 are engaged. Hook to complete installation. As shown in FIG. 3, inside the tire after the tire anti-skid device 1 is attached,
The fastening ropes 4 are pulled by the three inner connecting portions 12 of each of the net component pieces 6 and are arranged in a polygonal shape. On the other hand, on the outer side of the tire shown in FIG. 4, each of the net constituent pieces 6 is pulled by the two outer connecting portions 13 and arranged in a polygonal shape having a smaller number of corners than the inner side of the tire.

That is, on the inner side of the tire where the fastening rope 4 is likely to be worn due to contact with the rim flange 23a of the tire wheel 23 or the suspension in the tire house, the number of the inner connecting portions 12 is increased to increase the rim flange. 2
By arranging the fastening rope 4 in a polygonal shape along 3a,
The fastening rope 4 is prevented from approaching the rim flange 23a, and on the outside of the tire where the possibility that the tightening band 5 is liable to wear or the like is lower than that on the inner side of the tire, the number of hooks of the tightening band is reduced and mounting work is performed. Can be easily performed.

In the inner connecting portion 12 of each of the net component pieces 6, the inner connecting portion 12 in the middle is arranged closer to the center in the width direction than the inner connecting portions 12 at both ends in the longitudinal direction of the net. When mounted, the fastening rope 5 is arranged so as to be more along the arc of the rim flange 23a, thereby reliably preventing the rim flange 23a from coming into contact with the fastening rope 4.

In each of the net component pieces 6, the inner connecting portion 12 at the center in the longitudinal direction of the net and the inner connecting portion 1 at both ends are formed.
2 in the width direction with respect to the length and elongation of the net component piece 6 in the longitudinal direction of the net, ease of adaptation to the tire outer periphery (rigidity of the net component piece), etc. The curvature of the arc connecting the inner connecting portions 12 is a rim flange 23a.
Is set appropriately so as to be as close as possible to the curvature.

When the tire anti-slip device 1 is mounted, the grounding opening 8 is pushed and widened.
By getting used to, it gradually returns to the original interval. FIG. 6 shows a second embodiment of the present invention,
This is different from the first embodiment in that the number of the outer connecting portions 13 formed on the net constituting piece 6 is set to three as in the inner connecting portion 12, and other configurations are the same as those in the first embodiment. Therefore, the same reference numerals are given and the description is omitted.

The net forming piece 6 of the present embodiment starts from the middle of the inclined portion 6b on one side in the width direction (outside of the tire).
b, a pair of front and rear locking pieces 24 which are inclined in the opposite direction to the direction
The tips of the hook pieces 24 intersect to form a substantially V-shape, and the hooks 15 are provided at the intersections. In addition, the position of the hooking piece 24 is the outer connecting portion 1 at both ends in the longitudinal direction of the net.
3 is arranged closer to the center in the width direction than the end of the band-shaped portion 14.
It is arranged closer to the center in the width direction by β than the hook 15 provided on the band portion 14.

In this embodiment, since the number of the outer connecting portions 13 is increased as compared with the first embodiment, the tightening band 5 is prevented from approaching the rim flange 23a even outside the tire, and the tightening band 5 and the rim The wear of the flange 23a can be prevented. Further, since the outer connecting portion 13 at the center portion in the longitudinal direction of the net is displaced toward the center in the width direction by β from the outer connecting portions 13 at both end portions, the tightening band 5 is attached to the rim of the tire wheel 23. Flange 23
a, the polygonal shape is drawn along, and the contact with the rim flange 23a is reliably prevented.

In this embodiment, since the number of hooks of the tightening band 5 is increased as compared with the first embodiment, the weight of the whole anti-slip device 1 is increased, and the mounting property is slightly inferior. I have. FIG. 7 shows a third embodiment of the present invention, which is a modification of the arrangement of the inner connecting portion 12 of the net component 6 in the first embodiment. In this state, the hooking piece 17 of the inner connecting portion 12 at the center in the longitudinal direction of the net protrudes outward in the width direction longer than that of the first embodiment. The directional positions are the same (the distance from the ground area is the same). Therefore, the fastening ropes connected to the respective inner connecting portions 12 are arranged linearly in the deployed state of the net component. Further, the inner connecting portions 12 are provided at three places as in the first embodiment, whereas the outer connecting portions 13 are formed at two places.

Therefore, when the non-slip device 1 is mounted on the tire, the number of the fastening ropes 4 is increased on the inner side of the tire to prevent the fastening ropes 4 from approaching the rim flange of the tire wheel 23. On the outside of the tire, the number of hooks of the tightening band 5 is reduced as compared with the inside of the tire to improve the ease of mounting. In the present embodiment, since the distance from each of the inner connecting portions 12 to the grounding portion is the same in the unfolded state of the net component piece 6, the fastening rope 4 is made to follow the rim flange when mounted on the tire. This is slightly inferior to the first embodiment in the point.

FIG. 8 shows a modification of each of the above embodiments. FIG. 8A shows a modification of the first embodiment. The hook piece 17 is formed in a band shape extending parallel to the width direction from the intersection 6a instead of the substantially V-shaped one, FIG.
(B) is a modification of the second embodiment, in which the hook pieces 17, 24 of the inner and outer connecting portions 12, 13 at the center of the net component piece 6 in the longitudinal direction of the net are replaced with substantially V-shaped ones. Intersection 6
a formed in a band extending in the width direction from FIG.
(C) is a modified example of the third embodiment, in which the hooking piece 17 of the inner connecting portion 12 at the center of the net component piece 6 in the longitudinal direction of the net is replaced with a substantially V-shaped one and has a width from the intersection 6a. It is formed in a strip shape extending in parallel to the direction.

FIG. 9 shows a fourth embodiment of the present invention. This is so that when the anti-slip device 1 is mounted on the tire 2, the two net constituting pieces 6 adjacent to the grounding opening 8 are bent to expand the opening 8, and this is returned to the original state. Is provided with a return assisting means 25 for prompting the user. The return assisting means 25 is constituted by a tension coil spring 26 externally fitted to the fastening rope 4 corresponding to between the two net forming pieces 6 adjacent to the grounding opening 8, and one end of the tension coil spring 26 is The other end of the tension coil spring 26 is connected to the connecting member 16 on the opening side of the other net forming piece 6. Therefore, the ends on the opening side of the respective net components adjacent to the opening 8 are pulled together by the tension coil spring 26.

As shown in FIGS. 5A and 5B, the connecting member 16 is connected to the fastening rope 4 by the connecting member 1.
The connecting ring portion 16a of FIG. Therefore, when attaching the non-slip device 1, the connecting device 1 of the net constituting piece 6 is expanded so as to widen the opening 8.
When the tire 6 is moved outward in the longitudinal direction of the net along the fastening rope 4, a force inward in the longitudinal direction of the net is accumulated in the tension coil spring 26, and the tire 2 has a non-skid In addition to the fact that 1 is familiar, the width of the opening 8 tends to return to the original state naturally, and the opening width can be surely returned to a predetermined value by the urging force of the spring 26.

As a result, when the tire 2 is mounted,
The grounding opening 8 is expanded to facilitate attachment of the fastening rope 4 to both ends and fastening of the tightening band 5, so that the tire can be easily mounted at an appropriate position on the tire 2. Is reliably returned to the original narrow state so that the ride comfort is not deteriorated. Note that the return assisting means 25 may adopt a configuration in which a rubber band or the like is laid between the net components adjacent to the opening 8 in place of the tension coil spring 26 so as to pull each other.

FIG. 10 shows a fifth embodiment.
This is a modification of the configuration of the return assisting means described in the fourth embodiment. The return assisting means of the present embodiment includes a connecting member 16 (which is caulked to a fastening rope) on the side opposite to the opening of the net component piece 6 adjacent to the grounding opening 8 and a connecting member 16 at a central portion in the longitudinal direction of the net. Between the compression coil spring 27 externally fitted to the fastening rope 4 and the connecting tool 16 at the center and the connecting tool 16 at the opening (through the fastening rope). And a compression coil spring 27 externally fitted to the fastening rope 4.

Therefore, when the anti-slip device is attached, when the connecting member 16 on the opening side and the connecting member 16 at the center are respectively moved outward in the longitudinal direction of the net so as to widen the opening 8, the compression coil spring 27 The force that pushes the connecting members 16 and 16 inward in the longitudinal direction of the net is accumulated, and after the non-slip device is attached, the accumulated spring force assists the opening 8 to be narrowed to the original state. The same effects are obtained as in the fourth embodiment.

FIG. 11 shows, as a modification of the return assisting means, a combination of the fourth embodiment and the fifth embodiment, whereby the tension coil spring 26 and the compression coil spring 27 are combined. Thus, the grounding opening 8 can be more reliably returned. The present invention can be appropriately changed in design without being limited to the above embodiments. For example, in each of the above embodiments, the net main body of the anti-slip device is constituted by six net constituent pieces. It is not limited and can be changed.

Further, in addition to the net pattern as described above, the net component piece can be changed to one having a plurality of ladder-shaped portions inside, or a combination of a net-shaped portion and a ladder-shaped portion. It is. In addition, the net component piece is not limited to a core material coated with an elastic material such as rubber,
Various types of organic and inorganic short fibers such as rayon, polyamide fiber, polyester fiber, polyolefin fiber, polyurethane fiber, cotton, wool, glass fiber, carbon fiber, rock wool, and asbestos are mixed into elastic material. Alternatively, one molded from a resin material may be used.

The number of the inner connecting portion and the outer connecting portion is not limited to the above, and can be changed. The inner cord-shaped member is not limited to one long one, and may correspond to each net constituting piece. The short ones may be connected in the longitudinal direction. A rubber band generally used may be used in place of the above-mentioned tightening band for the outer cable-like member.

[0050]

As described above in detail, according to the present invention, it is possible to prevent a cord-like member for tightening a non-slip device from contacting a rim flange or the like of a tire wheel at a tire side portion.
It is possible to prevent these damages.

[Brief description of the drawings]

FIG. 1 is a plan view of a developed state of a net component according to a first embodiment of the present invention.

FIG. 2 is an overall plan view of the anti-slip device in an unfolded state.

FIG. 3 is a side view of the inside of a tire when a non-slip device is attached.

FIG. 4 is a side view of the tire outside.

FIG. 5 is a perspective view showing a connection state of an inner connection portion of the net component.

FIG. 6 is a plan view of a developed state of a net component according to a second embodiment of the present invention.

FIG. 7 is a plan view of a developed state of a net component piece according to a second embodiment of the present invention.

FIG. 8 is a plan view of a developed state showing a modified example of the net component pieces of the first to third embodiments.

FIG. 9 is a developed plan view of a net main body according to a fourth embodiment of the present invention.

FIG. 10 is a developed plan view of a net main body according to a fifth embodiment of the present invention.

FIG. 11 is a developed plan view of a net main body according to a modified example of the fourth and fifth embodiments.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tire anti-slip device 2 Tire 3 Net main body 4 Fastening rope (inner cable-like member) 5 Tightening band (outer cable-like member) 6 Net constituent piece 8 Grounding opening 11 Inner connecting part 12 Outer connecting part

Claims (5)

[Claims] 1. A belt-shaped net main body covering the outer periphery of a tire is formed by arranging a plurality of non-metallic net constituent pieces having a circumferential length shorter than the circumferential length of the tire in parallel in the tire circumferential direction. An inner connecting portion is formed at one end in the width direction of each of the net components, to which an inner cable-like member that connects the net main body endlessly at the inner portion of the tire is connected, and at the other end in the width direction of each of the net components. ,
In the tire anti-slip device, which forms an outer connection portion to which an outer cable-like member that connects the net body endlessly at the outer portion of the tire is connected, the number of inner connection portions in each net component piece is equal to the number of outer connection portions. A tire anti-slip device characterized by being formed in a number larger than the number. 2. The inner connecting portion is formed at both ends of the net component in the tire circumferential direction and at an intermediate portion in the tire circumferential direction. When the net component is deployed, the inner connecting portion of the halfway portion is formed. The tire anti-skid device according to claim 1, wherein the anti-slip device according to claim 1, wherein the anti-skid device is provided closer to the center in the width direction than the inner connection portion of the both ends. 3. A belt-shaped net main body covering the outer periphery of a tire is constituted by arranging a plurality of non-metallic net constituent pieces having a circumferential length shorter than the circumferential length of the tire in parallel in the tire circumferential direction. In a tire anti-slip device, a connecting portion is formed at a width direction end portion of each net component piece, at which a cable-like member that connects the net body endlessly at a side portion of the tire is connected. It is formed at both ends in the tire circumferential direction in the component piece, and at the middle part in the tire circumferential direction, and in a deployed state of the net component piece, the connecting part of the halfway part is closer to the center in the width direction than the connecting part of the two end parts. A tire anti-slip device, wherein the anti-slip device is provided on a vehicle. 4. The tire anti-skid device according to claim 3, wherein the connecting portion is an inner connecting portion disposed inside the tire. 5. A grounding opening for avoiding a ground contact portion of a tire when the net main body is mounted on a tire is formed between the net constituent pieces at an intermediate portion in the tire circumferential direction of the net main body. Among the inner connecting portions of the net component pieces adjacent to each other, at least the one closest to the grounding opening is connected so as to allow movement in the tire circumferential direction with respect to the cord-like member, and at least other than the inner connecting portion The tire anti-skid device according to claim 1, 2 or 4, wherein one inner connecting portion is fixed to the cord-like member.