JPH0572507U - Tire non-slip device - Google Patents

Abstract

(57) [Summary] [Purpose] The whole is composed of a large number of anti-slip pieces to improve the wearability, and the anti-slip pieces are combined to suit any tire size. [Structure] An engaging arm 11 and an engaging element 12 are provided on the front and rear sides of the anti-slip piece 1 having a U-shaped cross section, an insertion arm 21 and an insertion sheath 25 are provided on the front and rear sides, and a locking arm 15 is provided on the lower side of the front side. Provide each. The anti-slip pieces 1 are joined by the engagement of the engagement arm 11 and the engagement element 12 and the insertion of the insertion arm 21 and the insertion sheath 25, and are temporarily fixed by the tightening ring 2 hung on the locking arm 15. After that, the final joint portion is joined by a fitting or the like. The insertion arm 21 and the insertion sheath 25 are attracted by the magnets 22 and 26 provided to each other, and the ratchet teeth 23 and the ratchet element 27 restrict the floating during traveling.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a non-slip device for mounting on a tire when a vehicle such as an automobile runs on a snowy road or in a muddy road.

[0002]

[Prior Art]

 Conventionally, a so-called tire chain has been generally used as this type of anti-skid device.

However, as is well known, a tire chain is very troublesome to put on and take off, and it is easy to cut due to wear, and the crossing property is not always good. Above all, there is only one tire size for one tire chain. There was an inconvenience that it could not be adapted and lacked versatility.

On the other hand, various types of anti-skid devices replacing the conventional tire chains have been proposed in the past, and among them, known techniques considered to be related to the anti-skid device of the present invention are listed as follows. Become.

A large number of ladder-shaped anti-slip pieces made of an elastic body are preliminarily connected to each other in a strip shape via wires, and detachable members for endless connection are provided at both ends of the wires (for example, the actual open shovel). 63-96905). A tread of a tire is covered with a large number of plate-like anti-slip pieces that can be engaged with each other, and these are fixed by a plurality of arms extending radially from the axle of the tire (for example, JP-A-2-164607). .. A large number of anti-slip pieces having a U-shaped cross-section that hold the front and back sidewalls and tread of the tire and are fixed to an annular mounting member by arranging in an arch shape that covers the tire (for example, Japanese Utility Model Laid-Open No. 56-2567). Bulletin). A number of anti-slip pieces with a U-shaped cross section that hold the front and back sidewalls and treads of a tire are connected in advance in a strip shape so that they can be connected, and detachable members are provided at both ends for connecting endlessly. (For example, JP-A-61-157409, JP-A-61-115706, and JP-A-62-1403). It consists of a set of anti-slip pieces with a U-shaped cross-section that holds the front and back sidewalls of the tire and the tread. They are mounted, and after they are mounted, they are pulled toward the center of the tire with a tightening ring (for example, Japanese Patent Laid-Open No. 61-196808). It consists of a set of anti-slip pieces with a U-shaped cross section that holds the front and back sidewalls of the tire and the tread, and these anti-slip pieces are connected to the endless by pins so that they can be connected (for example, a 56-53606, 57-171904, 57-171904). It consists of a set of anti-slip pieces with a U-shaped cross section that holds the front and back sidewalls of the tire and the tread, and these anti-slip pieces are connected to the endless by a detachable connecting band (for example, Japanese Patent Publication No. 52- 33361).

[0006]

[Problems to be solved by the device]

 However, the above-mentioned conventional techniques have the following problems, respectively, and are not necessarily practical.

First, the anti-skid device described above is essentially similar to a conventional metal tire chain replaced with an elastic material, and like the tire chain, the entire device is twisted in a stored state before installation. There is a problem in wearability due to entanglement, and because the anti-slip pieces are not connected except via a wire, there was a risk that the distance between the anti-slip pieces would become indeterminate or slip during running. .. Further, in this device, since the anti-slip pieces are previously connected in a strip shape, there is still a problem that they can be adapted to only one tire size.

Next, regarding the above-mentioned anti-skid device, since this device only fixes the anti-slip piece on the front surface side of the tire, the rear surface side of the tire of the anti-slip piece floats up due to centrifugal force during traveling. There was a fear. Also in this device, since the anti-slip pieces are already connected in a band shape, the problem that they can be applied to only one tire size still remains.

Next, regarding the above-mentioned non-slip device, since this device preliminarily fixes an anti-slip piece to an annular mounting member in an arch shape, it can be folded or folded like other anti-slip devices. It was impossible to bend, and its size made it difficult to store when not attached. Further, in this device as well, since the anti-slip pieces are previously connected in a wheel shape, the problem that they can be applied to only one tire size still remains.

Next, regarding the above-mentioned non-slip device, since the anti-slip pieces are connected in a belt shape in advance in this device, there remains a problem that it can be applied to only one tire size. It was

On the other hand, in the above-mentioned anti-slip device, since the anti-slip pieces are not connected in this device, it is possible to adapt to a plurality of tire sizes by adjusting the interval and the number of the anti-slip pieces. Is possible. However, on the other hand, the anti-slip pieces are completely independent except that they are pulled toward the center of the tire by a common tightening ring, so the anti-slip pieces can be evenly arranged when mounted on the tire. In fact, it was impossible to swear, and the wheel balance was seriously disturbed, and the balance of the tire's ground contact could collapse and impair maneuverability.

Further, in the above-mentioned anti-slip device, since the anti-slip pieces are not connected in advance in this device, the length of the anti-slip device can be adjusted by increasing or decreasing the number of anti-slip pieces. However, the compatible tire size is limited to a multiple of the total length of the anti-slip pieces, and the compatible tire size is limited in the end. Further, in this invention, since the non-slip pieces are attached / detached by the pins, the attachment / detachment is substantially difficult. For example, the attachment / detachment by the pins on the back side of the tire is not possible unless the tire is removed from the vehicle. It was close to possible.

Further, in the case of the above-mentioned anti-slip device, in this device as well as the above-mentioned device, the anti-slip pieces are not connected in advance. Therefore, the length of the anti-slip device can be increased or decreased by increasing or decreasing the number of the anti-slip pieces. However, the applicable tire size is limited to a multiple of the total length of the non-slip pieces, and the applicable tire size is limited. Further, in the present invention, since the anti-slip pieces are attached / detached to / from each other by the connecting strips which are separate from the anti-slip pieces, the number of parts is unnecessarily increased, which may cause confusion at the installation site.

This invention is intended to provide a non-slip device that solves the problems of the prior art as described above, and in particular, it has a good fit and is a free-size slip suitable for all tire sizes. It was created with the intention of realizing a stopping device.

[0015]

[Means for Solving the Problems]

 The non-slip device of the present invention comprises a set of a non-slip piece 1 having a U-shaped cross section that holds the tread and the front and back sidewalls of the tire T by means of the front hanging wall 10, the back hanging wall 20, and the ceiling portion 30. In addition, each anti-slip piece 1 is provided with an engaging arm 11 and an engaging element 12 that are compatible with the front side hanging wall 10 by distributing them forward and backward, and a locking arm 15 whose locking surface faces the ceiling side. On the other hand, an insertion arm 21 and an insertion sheath 25 which are compatible with the back side hanging wall 20 are provided separately in the front and rear, and magnets 22 and 26 are attached to the insertion arm 21 and the insertion sheath 25, respectively. In this case, the relationship between the respective parts becomes the first coupling means of the anti-slip pieces by the engagement of the engaging arm 11 and the engaging element 12 of the adjacent anti-slip pieces 1 and the insertion of the insertion arm 21 and the insertion sheath 25. In addition, the non-slip piece 1 is provided with a tightening ring 2 that is stretched over the respective locking arms 15 of these anti-slip pieces 1 endlessly attached to the tire T and pulls them toward the center of the tire. The second coupling means between them is used.

Further, the anti-slip device of the present invention comprises a set of the anti-slip pieces 1. In this case, all the anti-slip pieces are not configured to have the same total length, and the anti-slip pieces 1a having different total lengths are required therein. It may be mixed according to.

Further, in order to strengthen the first coupling means, the upper part of the insertion arm 21 of the back side hanging wall 20 of the anti-slip piece 1 is constituted by ratchet teeth 23, and the insertion sheath 25 side is provided with this ratchet tooth 23. The ratchet element 27 corresponding to the ratchet teeth 23 may be provided, and the positions of the ratchet teeth 27 may be set so as to be related to each other when the anti-slip pieces 1 are lifted from the mounting surface with the tire by a certain amount or more.

In the present invention, it is difficult to join the pair of anti-slip pieces 1c and 1d, which are the final joining portions, during the assembly of the anti-slip pieces 1. In this case, the front side hanging wall is provided by the connecting metal fitting 60, which does not adopt a coupling means by inserting the insertion arm and the insertion sheath, and has both ends as the engaging portions 65 and 68, and the length between both engaging portions can be expanded and contracted. It is realistic to connect only the sides. In this case, the tightening ring 2 is used for temporary joining until the final joining portion is joined, and may be removed after the final joining portion is joined.

[0019]

[Action]

 Therefore, according to this invention, the anti-slip piece 1 embraces the front and back sidewalls of the tire T and the tread by the front side hanging wall 10, the back side hanging wall 20, and the ceiling portion 30, so that the ceiling portion 30 is the tread of the anti-slip piece. Becomes

The anti-slip pieces 1 engage the engaging arm 11 with the adjacent engaging element 12 so that the front side hanging walls 10 are joined together, and at the same time, the insertion arm 21 is inserted into the insertion sheath 25. As a result, the back-side hanging walls 20 are overlapped with each other, and thereby the slip-preventing pieces are sequentially connected to each other, and further, the tightening ring 2 is hung on each locking arm 15 of these non-slip pieces that are endlessly connected. By passing it over, it has the effect of pulling and fixing the anti-slip pieces toward the center of the tire.

In this case, the connecting portion is only on the front side hanging wall side of the anti-slip piece, but since the back side hanging wall is overlapped with the insertion arm inserted in the insertion sheath, for example, when slipping when braking the vehicle, etc. Even if force is applied to the stopper, the connected anti-slip pieces will not be twisted. On the other hand, since the back side hanging wall 20 side is not joined but is kept in a superposed state, it is easy to join even though it is located inside the tire which is difficult to reach. In this case, the insertion arm 21 and the insertion sheath 25 Since the magnets 22 and 26 are provided in the respective parts, even if they are inserted by groping, the magnets attract each other to be guided to an appropriate position with one touch.

Further, by providing the insertion arm 21 with the ratchet teeth 23, when the back side of the anti-slip piece 1 is likely to be lifted by centrifugal force due to the rotation of the tire, the ratchet teeth 27 of the ratchet teeth 23 are provided. The engagement of the anti-slip pieces pulls the anti-slip pieces together to prevent them.

Finally, in the above anti-skid device, the non-slip pieces 1a having different total lengths are mixed in the assembly of the anti-slip pieces 1 as needed, so that the length of the inner circumference of the anti-slip device is reduced. Since it can be set to a fine value that is not limited to a multiple of the total length of the retaining piece, it produces a free-size action that adapts to any tire size.

[0024]

【Example】

 FIG. 1 is a view showing an anti-slip piece 1 which constitutes an anti-slip device of the present invention (for convenience of illustration, the observation angle is divided into (A) and (B) here). The anti-slip piece 1 is formed by the front side hanging wall 10, the back side hanging wall 20, and the ceiling portion 30 into a U-shaped cross section for holding the front and back side walls of the tire T and the tread. In this embodiment, the duralumin is used. Although it is made of synthetic resin, it goes without saying that it may be made of synthetic resin as well as other metals.

FIG. 1 (A) is a view showing a front side hanging wall 10. The front side hanging wall 10 is integrally provided with an engaging arm 11 whose front end is bent inward in a hook shape and which is provided at the rear side. Is provided with an engaging element 12 adapted to this. In this case, the joining angle between the anti-slip pieces 1 differs depending on the size of the tire, and accordingly, a gap may be generated between the engaging end faces of the engaging arm and the engaging element, and these may wear. Therefore, in this embodiment, the engagement end 12 of the engagement element 12 always follows the engagement end surface of the engagement arm 11 by pivotally fixing the engagement element 12 to the front side hanging wall 10 by the shaft 13. (See Figure 2 for follow-up conditions). Reference numeral 14 in the drawing is an escape window for the engagement arm 11. Reference numeral 15 in the drawing denotes a locking arm with which the tightening ring 2 is locked, and is provided below the front hanging wall 10 with the locking surface facing the ceiling side. Although the tightening ring 2 employs a spring in this embodiment, it goes without saying that other means such as an elastic wire may be used.

FIG. 1 (B) is a view showing the back side hanging wall 20. The back side hanging wall 20 has an insertion arm 21 at the front side (the front and rear sides of the anti-slip pieces are arranged reversely for the sake of illustration). An insertion sheath 25, which is integrally provided and adapted to this, is provided at the rear. The insertion arm 21 is configured with ratchet teeth 23 on the upper side, and a magnet 22 is provided on the front side. The insertion sheath 25 is formed between the surface of the back side hanging wall 20 and the eaves plate 24 joined thereto, and the magnet 26 corresponding to the magnet 22 on the side of the insertion arm 21 is provided at the back. .. Reference numeral 27 in the drawing denotes a ratchet element corresponding to the ratchet tooth 23, and is provided at a position where it is engaged with the ratchet tooth 23 when the joined anti-slip pieces 1 are lifted above a certain limit from the mounting surface with the tire. Be done. In this embodiment, the ratchet 27 is in the shape of a pin, but the structure is not limited to this, and it goes without saying that a cut-out part of the upper part of the eaves plate 24 may be hung downward. is there.

Next, although the ceiling portion 30 has a function of preventing slippage, in this embodiment, two tread plates 31, 31 are formed by providing a window in the center, and each tread plate is provided from the back side. The spike 33 is screwed through a spring washer (not shown) to expose the tip end from the surface. Therefore, in this embodiment, when the spike 33 is worn, it can be easily replaced. The above tread plates 31 and 31 are given a slight elevation angle in conformity with the outer circumference of the tire. For example, when the tire size changes drastically for ordinary cars and light cars, the ends contact the ground and become worn. May occur. Therefore, in this case, one tread plate should be used, or non-slip pieces for ordinary cars and light cars with different elevation angles should be provided to deal with them.

In mounting the anti-slip piece 1 on the tire T, first, the anti-slip pieces are connected from the upper part of the tire to the left and right, and when the both reach the ground contact surface, the tightening ring 2 is attached to each of the anti-slip pieces. The suspension arm 12 of one piece is suspended and the whole is temporarily fixed, and then the vehicle is slightly moved back and forth to expose the remaining connection portion and the last anti-slip piece is connected (see FIGS. 5 and 6). In this case, when connecting the last anti-slip pieces 1c and 1d, it is necessary to pull the anti-slip pieces together against the elasticity of the tire T to engage them, but such work is difficult in reality. Therefore, only for these, the connecting means by engaging the engaging arm and the engaging element, and inserting the inserting arm and the inserting sheath is not adopted, and both ends are configured as the engaging parts 65 and 68. Only the front side and the hanging wall side are connected by a connecting fitting 60 whose length can be freely expanded and contracted.

9 and 10 are views showing the details of the connecting fitting 60. In this embodiment, the connecting metal fitting 60 is provided with a fulcrum of a lever 64 having one of the engaging portions 65 fixed to the other engaging portion 68, and the lever 64 is fixed to the other engaging portion 68 in a prone state. It is expandable and contractible as much as possible. In the figure, reference numeral 61 is a screw rod provided at one end of the engaging portion 65, and a fulcrum of the lever 64 is provided on a slide member 63 movable on the screw rod 61 by screwing a nut 62. Therefore, the connecting fitting 60 is expanded and contracted not only by the ups and downs of the lever 64 but also by the screw engagement of the nut 62. Reference numeral 66 in the drawing denotes an engaging arm for fixing the lever 64 to the engaging portion 68 in a prone state, and is provided at the end of the lever 64 so as to be freely movable. After the engagement arm 66 is engaged with the screw rod 61, the play of the engagement arm 66 is restricted by the urging force of the coil spring 67. Reference numeral 73 in the drawing denotes an engaging portion with the engaging fitting 65 provided on the anti-slip piece 1d side. Further, reference numeral 72 in the drawing denotes an engaging portion with an engaging fitting 65 provided on the anti-slip piece 1c side, and in this embodiment, an engaging element pivotally fixed to the anti-slip piece 1c by a shaft 71. 70 as an engagement window.

In the above-mentioned anti-slip piece 1, if anti-slip pieces 1a having different lengths are mixed as needed as shown in FIG. 2, an effect of adapting to any tire size is produced.

Further, as shown in FIG. 7, if a backing plate 40 of a required thickness is detachably provided on the back side of the front side hanging wall 10 of the anti-slip piece 1 with a screw 41 or the like, a backing plate having a different thickness can be selected. By doing so, it is possible to freely set the width of the inside of the anti-slip piece, and the effect of adapting to any tire size not only in diameter but also in width is produced.

FIG. 8 is a view showing an example in which the antiskid device of the present invention is applied to a double tire WT. This non-slip device is a non-slip device in which two members 50, 50 having a U-shaped cross-section for holding the front and back sidewalls of a tire and a tread are joined by a front side hanging wall 10, a back side hanging wall 20, and a ceiling portion 30 in the thickness direction. It consists of a set of pieces 1b. Each of the anti-slip pieces 1b is provided with an engaging arm 11 and an engaging element 12 which are compatible with the front side hanging wall 10 facing the outside by distributing them forward and backward, and a locking arm whose locking surface faces the ceiling portion side. 15 is provided on the surface, and on the other hand, the insertion arm 21 and the insertion sheath that are compatible with the back side hanging wall 20 facing the joint 51 of the U-shaped member of each anti-slip piece 1b and the back side hanging wall 20 facing the outside. 25 are distributed to the front and back. In this anti-skid device, the above is different from the above-mentioned ordinary anti-skid device, and since the rest of the configuration and action are common, the above description is applied in regard to these.

[0033]

[Effect of the device]

 The present invention having the above configuration has the following unique effects. The whole consists of a set of individual anti-slip pieces, and the anti-slip pieces are connected by the user as necessary. Therefore, by preparing one anti-slip piece of different total length, it can be applied to tires of all sizes. A free-size anti-slip device is realized. Therefore, it is not necessary to prepare a separate anti-skid device for each vehicle type, and neither the producer nor the seller needs to produce or prepare other kinds of products, which improves the production efficiency and inventory efficiency. The non-slip pieces are connected to each other by engaging means that can be completely connected on the front side that is exposed to the vehicle surface and is easy to work on. Since the insertion and superposition means using the magnet guided to the is adopted, the wearability is extremely good and anyone can quickly attach the anti-skid device to the tire. In the above case, when inserting and stacking on the back side, the ratchet teeth regulate the separation of the anti-slip pieces due to centrifugal force and keep the connection state strong, so even if the anti-slip piece is made thin, The strength of is not impaired and the manufacturing cost can be reduced. In the above case, the back side, which is hidden inside the tire and difficult to work, can be fully connected by groping, thus opening up the possibility of attaching the anti-skid device to the double tire, which was difficult to attach in the past. The whole is composed of a set of individual anti-slip pieces, and the anti-slip pieces are connected by a user as needed, so that they can be easily stored when not attached. For the same reason, even if a part of the anti-skid device is damaged, the anti-slip device of that part only needs to be replaced, and the economical anti-skid device is realized due to the fact that the spikes can be replaced. .. When a flexible fitting is used for the final joining part, it can be joined with one touch.In this case, the anti-slip pieces connected endlessly are pulled in the shrinking direction by the fitting, so the tightening ring must be removed. However, a sufficient bond strength can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a non-slip piece. (A) shows the state observed from the front side hanging wall side, and (B) shows the state observed from the back side hanging wall side.

FIG. 2 is a front view showing a state in which the anti-slip pieces are connected to each other.

FIG. 3 is a side view with a part of the anti-slip piece cut away.

FIG. 4 is a partially cutaway rear view showing a state in which the anti-slip pieces are connected to each other.

FIG. 5 is a front view of the entire tire showing a state in which the anti-slip pieces are connected to each other.

FIG. 6 is a rear view of the entire tire showing a state in which the anti-slip pieces are connected to each other.

FIG. 7 is a side view of a different embodiment of the anti-slip piece.

FIG. 8 is a side view of another embodiment of the non-slip piece.

FIG. 9 is a perspective view of a coupling fitting and a non-slip piece.

FIG. 10 is a partially cutaway bottom view of the coupling fitting and the slip stopper.

[Explanation of symbols]

 T Tire 1 Anti-slip piece 1a Anti-slip piece 1c (different length) Non-slip piece 1d (final connection part) Anti-slip piece 2 Tightening ring 2 Front hanging wall 11 Engaging arm 12 Engagement element 15 Locking arm 20 Back side hanging wall 21 Insert arm 22 Magnet 23 Ratchet tooth 25 Insert sheath 26 Magnet 27 Ratchet child 30 Ceiling 33 Spike 60 Coupling metal fitting

Claims (9)

[Scope of utility model registration request] 1. A skid having a U-shaped cross section in which the front side hanging wall (10) holds the front side wall of the tire, the back side hanging wall (20) holds the back side wall, and the ceiling portion (30) holds the tread. It is composed of a set of stopper pieces (1), and the front side hanging wall (10) of each anti-slip piece (1) is provided with compatible engaging arms (11) and engaging elements (12) in a front-rear manner. The locking arm (15) with the stop face facing the ceiling is provided on the surface, and the hanging wall (20) on the back side is used.
The insertable arm (21) and the insertable sheath (25) which are compatible with each other are provided in front of and behind the insertable arm (21).
The magnets (22, 26) are attached to the insertion sheath (25) and the engaging arm (11) of the anti-slip pieces (1) adjacent to each other.
To the engaging element (12), the insertion arm (21) and the insertion sheath (2)
5) is used as a first coupling means for the anti-slip pieces, and the anti-slip pieces (1) endlessly attached to the tire are hooked on the respective locking arms (15) of the tires. An anti-skid device for a tire, characterized in that a tightening ring (2) that pulls in the direction of the center is used as a second coupling means for the anti-slip pieces (1). 2. The tire anti-skid device according to claim 1, wherein anti-slip pieces (1a) having different total lengths are prepared so that they can be selected from a group of anti-slip pieces (1). 3. A back hanging wall (20) of the non-slip piece (1).
The upper part of the insertion arm (21) of the above is configured with ratchet teeth (23), and the ratchet element (27) corresponding to the ratchet teeth (23) is provided on the insertion sheath (25) side so that the positions of both are joined. The anti-skid device for a tire according to claim 1 or 2, wherein the anti-slip pieces (1) are engaged with each other when the anti-slip pieces (1) are lifted from a mounting surface with the tire by a predetermined amount or more. 4. The front side hanging wall (10) of the non-slip piece (1)
The anti-skid device for a tire according to any one of claims 1 to 3, wherein said engaging element (12) is pivotally attached to said front hanging wall (10) so as to be swingable. 5. The tire slip stopper according to claim 1, wherein a spike (33) is threadedly inserted from the rear surface of the ceiling portion (30) of the slip stopper piece (1) toward the front surface. apparatus. 6. The front side hanging wall (10) of the non-slip piece (1)
The tire according to any one of claims 1 to 5, wherein a backing plate (40) is detachably provided on the back side of the tire, and the width of the inside of the non-slip piece (1) is variable depending on the presence or absence of the backing plate (40). Anti-slip device. 7. In the assembly of the anti-slip pieces (1), only the pair of anti-slip pieces (1c, 1d), which are the final joints, are engaged with the engaging arms and the engaging elements of the front side hanging wall and the back side hanging wall. The front side hanging down by the connecting metal fitting (60), which does not adopt the connecting means by inserting the insertion arm and the insertion sheath, and has both ends as the engaging portions (65, 68), and the length between both engaging portions can be expanded and contracted. The tire anti-skid device according to any one of claims 1 to 6, wherein only the wall side is connected. 8. A fulcrum of a lever (64) having one of the engaging portions (65) fixed thereto is provided on the other engaging portion (68), and the lever (64) is attached to the other engaging portion (68). The anti-skid device for a tire according to claim 7, wherein the anti-skid device is used as a means for expanding and contracting the connecting metal fitting (60) by fixing it in a prone state. 9. A member having a U-shaped cross section in which the front side hanging wall (10) holds the front side sidewall of the tire, the back side hanging wall (20) holds the same back side wall, and the ceiling portion (30) holds the tread. An engaging arm composed of a set of anti-slip pieces (1b) in which two (50, 50) are joined in the thickness direction, and which are compatible with the front side hanging wall (10) facing the outside of each anti-slip piece (1b). (11) and engaging element (1
2) are provided by arranging them forward and backward, and a locking arm (15) having a locking surface directed toward the ceiling is provided on the surface, while a member (50, Insertion arm (21) compatible with the back hanging wall (20) facing the joint (51) and the back hanging wall (20) facing the outside.
And, the insertion sheath (25) is divided into front and rear, and
Magnets (22, 26) are attached to the insertion arm (21) and the insertion sheath (25), respectively, to engage the engagement arm (11) and the engagement element (12) of the anti-slip pieces (1) adjacent to each other. , The insertion arm (21) and the insertion sheath (25) are used as a first coupling means for the anti-slip pieces, and the locking arms (of the anti-slip pieces (1) mounted endlessly on the tire ( A non-slip device for a tire, characterized in that it has a tightening ring (2) which is stretched around 15) and pulled in the direction of the center of the tire to form a second coupling means for the non-slip pieces (1).