JP2000219019A - Antislipper for automobile tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the mountability of an antislipper on a tire. SOLUTION: An antislipper body is annularly set to cap a tire tread, with its tire inner wheel side locked by a connecting member and its outer wheel side locked to one end of a tightening arm of a tightening plate. Then, an elastic band is hooked to a hook 25 at its midspan on the tire outer wheel side and two tightening plates 20 are rotationally moved to cause first and second tightening arms to be pulled to the center for tightening on the tire outer wheel side. If one of the tightening arm located midway is demountable, the antislipper body can be set under a tire without using a jack or moving an automobile.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-slip device for an automobile tire, and more particularly, to a non-slip device excellent in mounting property on a tire.

[0002]

2. Description of the Related Art When traveling on snowy roads or icy roads, anti-slip devices are mounted on tires to prevent slip accidents and to ensure the safety of traveling.

Usually, this type of non-slip device includes a ladder-type non-slip body having a plurality of non-slip bands provided between a pair of side members at a predetermined interval in a ladder shape (for example, a real anti-skid device). 59-180904, Japanese Utility Model Application Laid-Open No. 59-1652.
No. 06, Japanese Utility Model Application Laid-Open No. 61-161006, etc.), and a plurality of synthetic resin (or rubber) net bodies having a repetitive net pattern are arranged in the longitudinal direction and adjacent both sides in the width direction. -Type non-slip body whose parts are sequentially connected by a connecting member (JP-A-60-22507)
Gazette, Japanese Unexamined Patent Publication No. Sho 61-30522, Japanese Utility Model Laid-Open No. 1-6
No. 0904, Japanese Utility Model Laid-Open No. 2-66304, Japanese Utility Model Laid-Open No. 2-77110, Japanese Utility Model Laid-Open No. 3-94307,
Etc.) are known.

In such a non-slip device, a non-slip body is put on a tire tread, and opposite ends on both sides are connected to each other by a detachable connecting member such as a hook to form an annular shape. The elastic band is sequentially hooked and tightened on a plurality of metal fittings attached with a gap, but if the elastic band is set to a low tensile force, the adhesion between the anti-slip device and the outer periphery of the tire can not be secured, While the anti-slip device may be lifted by the centrifugal force, if the tensile force is set to be strong, there is a problem that the tightening operation by the elastic band becomes difficult in the case of a woman or an elderly person.

Therefore, a plurality of flexible projections are protruded from the non-slip body on the tire outer ring side, a fastening plate is connected between the flexible projections, and the flexible projection is drawn by rotating the fastening plate. There has been proposed a system in which a non-slip body is brought into close contact with a tire tread (see JP-A-3-16813).

[0006]

However, in the tightening method disclosed in the above-mentioned conventional publication, there is a limit to the distance that can be drawn by rotating the tightening plate, and it is necessary to provide a large number of tightening plates in order to secure a sufficient tightening force. There is
Since the number of fastening plates to be operated is large, the mounting operation is very complicated, and there is a problem that it is difficult for women and elderly people to handle.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a non-slip device for an automobile which can be mounted on a tire by a simple operation.

[0008]

SUMMARY OF THE INVENTION Accordingly, a non-slip device for an automobile tire according to the present invention covers a non-slip body on a tire tread, and connects opposite ends of the anti-slip body to a ring by a detachable connecting member. In a non-slip device for an automobile tire in which an annular anti-slip body is tightened on a tire outer wheel side, the tire inner wheel side of the anti-slip body is set to a length when mounted on a tire tread, On the tire outer ring side of the stopper, an elastic band is formed along the outer ring side and connected to the main body portion of the anti-slip body at predetermined intervals, and the anti-slip body has a main body part on the tire outer ring side. At least one hook capable of hooking a portion between the connecting portions of the elastic band is attached, and an opposite end is formed in the middle of the main body portion on the outer ring side of the anti-slip tire. One end of each of first and second tightening arms is rotatably supported at one end, and the other end of each of the two tightening arms is rotatably supported at both sides of the tightening plate. Is turned around the center thereof so that the opposite end is drawn toward the tightening plate. One end of the second clamping arm is rotatably supported, and the other end of the first or second clamping arm is rotatably supported on one side of the clamping plate and the other side of the clamping plate. , The other end of the second or first tightening arm is rotatably supported, and one end of the second or first tightening arm is detachable from the other outer end of the anti-slip body on the tire outer wheel side. Is provided so that it can be locked Plate, characterized in that the two outer ends of the tire outer side of the skid structure has no such gravitate toward the clamping plate by being rotated about its center.

One of the features of the present invention is that the non-slip body is put on the tire tread and both outermost ends thereof are annularly connected by a connecting member and a tightening arm of a tightening plate. After that, the elastic band on the tire outer ring side of the non-slip body is tightened by rotating the tightening plate.

Normally, there is a limit to the distance that one end of the first and second tightening arms can be pulled when the tightening plate is rotated, and the intermediate portion of the elastic band is moved to the hook position in the main body of the non-slip body. If it is fixed at all times, a large tensile force of the elastic band acts on the tightening plate, and it is difficult to connect the anti-slip body over the tire in a ring shape. 3-1
As shown in Japanese Patent No. 6813, it is necessary to provide a large number of combinations of a tightening plate and a tightening arm. On the other hand, in the present invention, since the intermediate portion of the elastic band can be disengaged from the non-slip body, before the elastic band is hooked on the hook, the length of the elastic band, and therefore the anti-slip body on the tire outer ring side. One end of the clamping arm is attached to the outer end of one of the non-slip bodies when the anti-slip body is placed on the tire without sufficient tension in the tightening plate because the elastic plate has a sufficient length. When locking to one end, one end of the clamping arm can be locked very lightly.

In addition, when the elastic band is hooked on the hook, a sufficient space can be secured between one ends of the first and second tightening arms before the tightening plate is rotated. The elastic band can have a margin, and the elastic band can be very easily hooked on the hook.

Further, after the elastic band is hooked on the hook, the first and second tightening plates are rotated to perform the first and second operations.
One end of the second tightening arm can be sufficiently pulled toward the center, and the outer ring side of the tire can be tightened with a sufficient tightening force in combination with the pulling force of the elastic band. As a result, the mountability to the tire can be significantly improved without incurring the complicated operation.

When the anti-slip body according to the present invention is mounted on a tire, the tire is lifted off the ground using a jack, a non-slip device is inserted below the tire, and the tire is mounted over the outer periphery of the tire. After lowering or spreading the non-slip device on the ground, it is necessary to move the automobile so that the tire rides on the non-slip device and put the non-slip device over the tire.

On the other hand, in the present invention, the fastening plate and the first and second fastening arms are interposed in the middle of the anti-slip body on the tire outer ring side. Therefore, if one of the tightening arms is made detachable, the main body of the non-slip body is turned from the inside of the tire so as to sandwich the ground contact portion of the tire tread, and one of the tightening arms of the tightening plate on the tire outer ring side is moved to the end of the non-slip body. Locking the part allows the non-slip body to be attached to the tire without using a jack or moving the car.

That is, in the anti-slip device for an automobile tire according to the present invention, the anti-slip body is put on the tire tread, and the opposite ends thereof are annularly connected by a detachable connecting member. In a non-slip device for an automobile tire in which a tire outer wheel side is tightened, the tire inner wheel side of the anti-slip body is set to a length when mounted on a tire tread, while the tire outer wheel side of the anti-slip body is set. An elastic band is formed along the outer ring side and connected to the main body portion of the anti-slip body at predetermined intervals, and
At least one portion of the main body portion of the anti-slip body on the tire outer ring side is capable of hooking a portion between connection portions of the elastic band.
Two hooks are attached, and opposing ends are formed in the middle of the main body part on the outer ring side of the anti-skid body, and a gap in the width direction between the opposing ends that can sandwich the ground contact portion of the tire tread is provided in the width direction. One end of a first or second clamping arm is rotatably supported on one of the opposed ends, and the other end of the first or second clamping arm is connected to one side of a clamping plate. The other end of the second or first tightening arm is rotatably supported on the other side of the tightening plate, and the other end of the second or first tightening arm is rotatably supported on the other side of the tightening plate. Is provided so that it can be detachably engaged with the other of the opposed ends, and the opposed end is drawn toward the fastening plate by rotating the fastening plate about its center. Like none, slipping above One end of a first or second tightening arm is rotatably supported at one outer end of the body on the tire outer wheel side, and the other end of the first or second tightening arm is connected to one side of a tightening plate. The other end of the second or first tightening arm is rotatably supported on the other side of the tightening plate, and the other end of the second or first tightening arm is rotatably supported on the other side of the tightening plate. Is provided so as to be detachably engageable with the other outer end of the anti-slip body on the tire outer wheel side, and the tire of the anti-slipping structure is formed by rotating the tightening plate around its center. The two outer ends on the outer ring side are drawn toward the fastening plate.

The material of the non-slip body is not particularly limited.
It is preferable to produce the thin and light weight using rubber or a soft synthetic resin material such as soft urethane. The elastic band may have appropriate elasticity, and may be made of a synthetic resin material such as rubber or soft urethane. Further, the materials of the tightening plate and the first and second tightening arms are not particularly limited, and can be made of a metal material or a synthetic resin material.

The form of the non-slip body may be a ladder type or a net type. For example, in the case of a net type, it is preferable to manufacture the shape as shown in the following embodiment. Also,
In the case of a ladder type, it is preferable to provide a hook on the tire outer wheel side of the ladder. This non-slip body may be manufactured integrally as a whole, or may be configured by connecting a plurality of non-slip components.

That is, the main body portion of the non-slip body comprises at least two non-slip components arranged in a longitudinal direction,
The inner wheel side of the at least two non-slip structures is connected to each other by a connecting member so as to have a length when mounted on the tire tread, while at least one of the at least two anti-slip structures is on the outer wheel side of the tire. , At least two flexible protrusions are formed at a predetermined interval from each other, and the at least two flexible protrusions are connected by an elastic band. At least one support projection is formed between the flexible projections, and a hook capable of hooking an elastic band is attached to the support projection, and at least two of the two non-slip configurations that are continuous in the longitudinal direction are provided. The other ends of the first and second tightening arms supported by the tightening plate are rotatably supported at opposite ends of the body on the tire outer ring side, respectively.
Alternatively, it is preferable that one is rotatably supported and the other is detachably locked.

Specifically, it is preferable that the anti-slip body is constituted by four anti-slip components forming a net shape in a repetitive pattern. That is, the main body portion of the non-slip body is composed of four anti-slip components in a net shape, each of which has a flexible projection at each end on the tire outer ring side and a support projection in the middle. Without the shape having a piece, the opposite ends of the four anti-slip components on the tire inner ring side are connected to each other by a connecting member, while the four anti-slip components are arranged two by two in the longitudinal direction, The flexible protrusions on the tire outer ring side are connected to each other by a connecting member, and the opposed flexible protrusions on the tire outer ring side between the combination of the two anti-slip components are supported by a fastening plate. One end of each of the first and second tightening arms can be rotatably supported, or one can be rotatably supported and the other can be detachably locked.

The relative position of the tightening plate and the tightening arm relative to each other is stable when the non-slip body is pulled toward the outer wheel of the tire, and the reverse rotation of the tightening plate due to an impact during traveling is unlikely to occur. Is desirable. Therefore, it is preferable to provide the locking plate with a locking projection which abuts on the first or second tightening arm to prevent the tightening plate from rotating in the reverse direction. The lock projection may be in contact with either one of the first and second tightening arms, or may be in contact with both.

Further, it is desirable that the surrounding air temperature is low on a frozen road or a snowy road, and that the anti-slip device can be mounted on the tire in a short time by simply rotating the tightening plate.
Therefore, a pair of operation holes are formed in the tightening plate at positions symmetrical with respect to the center of rotation, and a pair of projections of an operating jig are fitted into the pair of operation holes so that the tightening plate can be rotated. Good to do.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to specific examples shown in the drawings. 1 to 7 show a preferred embodiment of the present invention. In the figure, a non-slip body 10
Consists of four net-shaped anti-slip components 11... Each anti-slip component 11 is made of a soft synthetic resin material, for example, soft urethane, and is formed into a thin, lightweight, repetitive pattern net shape. I have.

The four anti-slip structures 11 are arranged in the longitudinal direction, and two of the anti-slip structures 11 are mutually connected by metal rings (connecting members) 12. Between the two sets of non-slip components 11, 11, adjacent ends on the tire inner ring side are connected with a connecting member 13 made of soft urethane and metal rings 12, 12.
And are spaced apart so as to sandwich the ground contact portion of the tire tread.

A connecting member 13 made of soft urethane is connected to an end of the outermost one anti-slip structure 11 of the anti-slip body 10 on the tire inner ring side by a metal ring 12. A metal hook 14 having a J-shape is attached to the tire, and a hook hole 14 is formed at the end on the tire inner wheel side of the anti-slip structure 11 on the opposite side.
Of the anti-slip body 10 can be connected in a ring shape.

Also, each of the four non-slip components 11...
Are attached to appropriate locations on the surface of the device to improve anti-slip properties.

Further, four anti-slip components 11 are provided.
The flexible projections 16 and 17 extend to the entire width in the width direction and are integrally formed at both ends, and the support projections 18 and 18 are integrally formed as part of the net shape at both ends in the center width direction. The elastic bands 19, 19 made of soft urethane are provided between the flexible projection 16 and the support projection 18 and between the support projection 18 and the flexible projection 17 on the inner side of the tire of each anti-slip structure 11.
Are connected by metal rings 12..., And the inner wheel side of the anti-slip body 10 is set to the length when the tire is mounted. In FIG. 2, for convenience, the inner wheel side of the tire is shown with the same length as the outer wheel side of the tire.

On the other hand, two sets of the non-slip structures 11... Are connected two by two at the adjacent ends on the tire outer ring side by metal rings 12. One end of a second tightening arm 22 is rotatably connected to one flexible projection 16 between the combined body of the bodies 11 and 11 by a metal ring 12, and the other end of the second tightening arm 22 is The other side of the tightening plate 20 is rotatably supported by a connecting pin 23 at one side of the substantially rectangular tightening plate 20, and the other end of the first tightening arm 21 is connected to the other side of the tightening plate 20 by the connecting pin 23. It is rotatably supported, and one end of the first tightening arm 21 has a J
A metal hook 26 having a V-shape is attached, and a hook hole 27 is formed on the tire outer ring side of the opposing flexible projection 17, and a J-shaped tip of the hook 26 is hooked on the hook hole 27, and two sets of slides are formed. The combination of the stop components 11, 11 can be interconnected. The combination of the two sets of non-slip components 11 may be always connected.

On the tire outer ring side of each anti-slip structure 11, a long elastic band 24 made of soft urethane is provided between the flexible protruding pieces 16 and the flexible protruding pieces 17 to form the metal rings 12, 12.
On the other hand, a hook 25 capable of hooking the elastic band 24 is fixed to the support projection 18.

Further, an integral second tightening arm 22 is rotatably supported by the metal ring 12 at the end of the outermost one anti-slip structure 11 of the anti-slip body 10 on the tire outer wheel side. The other end of the second tightening arm 22 is rotatably supported on one side of the tightening plate 20 by a connecting pin 23, and the other end of the first tightening arm 21 is mounted on the other side of the tightening plate 20. The first pin 21 is rotatably supported by a connecting pin 23, and a J-shaped metal hook 26 is attached to one end of the first tightening arm 21.
A hook hole 27 is formed at an end of the opposite anti-slip structure 11 on the tire outer ring side, and a tip J-shaped portion of the hook 26 is hooked into this hole to connect the tire outer ring side of the anti-slip body 10 in a ring shape. I can do it.

A lock projection 28 is formed at the end of the tightening plate 20 to protrude.
Numeral 8 is such that when the first and second flexible protrusions 16 and 17 are pulled, the first tightening arm 21 abuts against the first tightening arm 21 during reverse rotation of the tightening plate 20 to prevent reverse rotation of the tightening plate 20. Has become.

Further, a pair of operation holes 29, 29 are formed in the tightening plate 20 at positions symmetrical with respect to the center of rotation, and a pair of projections 31 of the operation jig 30 shown in FIG.
31 into the operation holes 29, 29 and tighten the tightening plate 2
0 can be rotated.

When the anti-slip device is mounted on the tire, the hook 26 of the intermediate first tightening arm 21 is connected to the hook hole 2.
7, the combination of the two sets of anti-slip components 11, 11 is opened to the left and right, and turned so as to sandwich the ground contact portion of the tire tread from the inside of the tire 40, and the hook 26 of the first tightening arm 21 is provided on the tire outer ring side. Is hooked on the hook hole 27 of the flexible protruding piece 17, the anti-slip body 10 is attached to the tire 4 without using a jack or moving the automobile.
Can be set below 0.

After that, the non-slip body 10 is put on the tread of the tire 40. Since the four non-slip components 11... Can be put on the tire tread lightly.

Next, a hand is put on the inner wheel side of the tire 40,
After hooking the tip J-shaped portion of the hook 14 of the non-slip structure 11 on the other end into the hook hole 15 of the non-slip structure 11 on one end of the non-slip body 10, the same slip also occurs on the outer ring side of the tire 40. Non-slip structure 11 at one end of stopper 10
Of the anti-slip structure 11 on the other end side into the hook hole 27 of
Of the hook 26 of the tightening arm 21 is hooked, and the non-slip body 10 is connected in a ring shape.

When the non-slip body 10 is thus mounted on the outer periphery of the tire 40, the long elastic bands 24 of each anti-slip component 11 on the outer ring side of the tire 40 are provided.
Are hooked on the hooks 25 of the support projections 18. However, since the first and second tightening arms 21 and 22 are not drawn toward the tightening plate 20, the elastic band 24 is lightly hooked. 25 can be hooked.

When all the elastic bands 24 are hooked on the hooks 25, the operating jig 30 is held by hand and the
1 and 31 are connected to a pair of operation holes 29 and 2 of the tightening plate 20.
When the operation jig 30 is twisted in the direction of the arrow A in FIG. 3A, the tightening plate 20 rotates about the center of rotation, and the first and second tightening arms 21 and 22 are inserted therein. The connecting pins on the end side are connecting pins 23 of the tightening plate 20,
While rotating around 23, it is drawn toward the support projection 18 as shown by the arrow B in FIG.

When the tightening plate 20 is in the state shown in FIG. 3B, the first and second tightening arms 21 and 22 are completely drawn, and the two sets of anti-slip structures 11 and 11 are accordingly moved. The combination is also attracted to each other.

Similarly, when the same operation is performed for the outermost clamping arm 20 to which the non-slip body 10 is connected, the outer tire side of the non-slip body 10 has the elasticity of the elastic band 24 and the elasticity of the clamping arms 21 and 22. The tightening is surely performed by the reduction of the interval due to the pulling, and the non-slip body 10 does not rise during traveling.

When the anti-slip device is removed, the reverse operation may be performed. However, when the tightening plate 20 rotates in the reverse direction, the first tightening arm 21 moves over the lock projection 28.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a mounted state of a non-slip device according to the present invention on a tire according to a preferred embodiment.

FIG. 2 is a diagram showing an overall configuration of the embodiment.

FIG. 3 (a) before tightening and after tightening in the above embodiment.
It is a figure which shows the relationship of the fastening plate and the fastening arm of (b).

FIG. 4 is a perspective view showing an operation jig of the anti-slip device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Non-slip body 11 Non-slip structure 12 Metal ring (connecting tool) 13 Connecting tool 14 Hook (connecting member) 15 Hook hole 16 First flexible projection 17 Second flexible projection 18 Support projection 19 Elastic band 20 Tightening plate 21 First tightening arm 22 Second tightening arm 23 Connecting pin 24 Elastic band 25 Hook 26 Hook 27 Hook hole 28 Lock projection 29 Operation hole 30 Operation jig 31 Projection 40 Tire

 ──────────────────────────────────────────────────続 き Continued on the front page (71) Applicant 597147016 Toru Sato 1-36-36 Higashi Tsujii, Himeji City, Hyogo Prefecture Inventor Koji Sugai 2-24 Yakuracho, Shima-ku, Himeji City, Hyogo Prefecture

Claims (7)

[Claims] The present invention relates to an automobile tire in which a non-slip body is put on a tire tread, and opposite ends of the anti-slip body are annularly connected by a detachable connecting member, and then a tire outer ring side of the annular anti-slip body is tightened. In the anti-skid device, the inner wheel side of the anti-slip body is set to a length when mounted on a tire tread, while the outer ring side of the anti-slip body has an elastic band along the outer wheel side and at a predetermined interval. At least one hook is attached to the main body portion of the non-slip body on the tire outer ring side, and at least one hook capable of hooking a portion between the connection portions of the elastic band is attached to the main body portion of the non-slip body. An opposite end is formed in the middle of the main body portion of the anti-slip tire outer ring side, and one end of each of first and second tightening arms is rotatably supported at the opposite end. The other ends of the two tightening arms are rotatably supported on both sides of the tightening plate, and the opposite ends are directed toward the tightening plate by rotating the tightening plate about its center. A first outer end of the anti-slip body on the tire outer ring side has a first end.
Or, one end of the second tightening arm is rotatably supported,
The other end of the first or second tightening arm is rotatably supported on one side of the tightening plate, and the other end of the second or first tightening arm is mounted on the other side of the tightening plate. The second or first tightening arm is rotatably supported, and one end of the second or first tightening arm is provided so as to be detachably engageable with the other outer end of the non-slip body on the tire outer wheel side, and the tightening plate is The two non-slip end portions of the anti-slip structure on the outer wheel side of the tire are drawn toward the fastening plate by being rotated about the center thereof. apparatus. 2. An automobile tire in which a non-slip body is put on a tire tread, and opposite ends of the anti-slip body are annularly connected by a detachable connecting member, and then the outer ring side of the annular anti-slip body is tightened. In the anti-skid device, the inner wheel side of the anti-slip body is set to a length when mounted on a tire tread, while the outer ring side of the anti-slip body has an elastic band along the outer wheel side and at a predetermined interval. At least one hook is attached to the main body portion of the non-slip body on the tire outer ring side, and at least one hook capable of hooking a portion between the connection portions of the elastic band is attached to the main body portion of the non-slip body. An opposing end is formed in the middle of the main body portion on the outer ring side of the non-slip tire, and a gap between the opposing ends that can sandwich the ground contact portion of the tire tread has a width direction. One end of a first or second clamping arm is rotatably supported at one of the opposed ends, and the other end of the first or second clamping arm is connected to one end of a clamping plate. The other end of the second or first tightening arm is rotatably supported on the other side of the tightening plate, and the other end of the second or first tightening arm is rotatably supported on the other side of the tightening plate. One end is provided so as to be detachably engageable with the other of the opposing ends, and the opposing end is drawn toward the tightening plate by rotating the tightening plate about its center. A first outer end of the non-slip body on the tire outer wheel side has a first end.
Or, one end of the second tightening arm is rotatably supported,
The other end of the first or second tightening arm is rotatably supported on one side of the tightening plate, and the other end of the second or first tightening arm is mounted on the other side of the tightening plate. The second or first tightening arm is rotatably supported, and one end of the second or first tightening arm is provided so as to be detachably engageable with the other outer end of the non-slip body on the tire outer wheel side, and the tightening plate is The two non-slip end portions of the anti-slip structure on the outer wheel side of the tire are drawn toward the fastening plate by being rotated about the center thereof. apparatus. 3. A main body portion of the non-slip body is composed of at least two non-slip components arranged in a longitudinal direction, and the inner side of the at least two non-slip components has a long length when mounted on a tire tread. While at least two of the at least two of the at least two anti-slip structures are spaced apart from each other by a predetermined distance on the tire outer wheel side of the at least one anti-slip structure. The at least two flexible projections are connected by an elastic band, and at least one support projection is provided between the flexible projections on the tire outer ring side of the at least one anti-slip structure. A hook capable of hooking the elastic band is attached to the supporting projection, and two of the at least two non-slip structures that are continuous in the longitudinal direction. One end of each of the first and second tightening arms supported by the tightening plate is rotatably supported at opposite ends of the adult tire outer ring side, or one is rotatably supported and the other is rotatably supported. 3. The anti-slip device for an automobile tire according to claim 1, wherein the anti-slip device is provided so as to be detachably engageable. 4. A main body portion of the anti-slip body is formed of four anti-slip components in a net shape, and each of the four anti-slip components has flexible projections at both ends on the tire outer ring side. ,
The four anti-slip structures have a shape having a support projection in the middle, and the four anti-slip structures are longitudinally opposed to each other on the tire inner ring side by connecting members. The two flexible protrusions on the tire outer ring side are connected to each other by a connecting member so that the flexible protrusions on the tire outer ring side are connected to each other by a connecting member. One end of each of the first and second tightening arms supported by the tightening plate is rotatably supported, or one of the first and second tightening arms is rotatably supported, and the other is provided so as to be detachably locked. The anti-skid device for an automobile tire according to claim 3, which is provided. 5. The four non-slip components have a shape in which flexible projections at both ends extend over the entire width in the width direction, and opposing flexible projections of a combination of the two sets of non-slip components. 5. The anti-skid device for an automobile tire according to claim 4, wherein a sufficient interval is provided between the pieces so as to sandwich a ground contact portion of the tire tread. 6. The locking plate according to claim 1, wherein said tightening plate is provided with a lock projection which abuts on said first or second tightening arm to prevent reverse rotation of said tightening plate. Anti-slip device for automobile tires. 7. A pair of operation holes are formed in the tightening plate at positions symmetrical with respect to a center of rotation.
6. The anti-slip device for an automobile tire according to claim 1, wherein a pair of projections of an operation jig are fitted into the pair of operation holes to enable the tightening plate to rotate.