JP2001191769A - Antiskid device for tire and clamping device for use in the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the installation work of an antiskid device for a tire by simplifying the clamping work of its net body. SOLUTION: This clamping device for use in the antiskid device 1 for the tire comprises a device body 44 with a tool engaging portion 47, a first hook body 45 having a base end swingably coupled to one end of the device body 44 and having a hook 45C engaged with a net body 6 of the antiskid device 1 for the tire, and a second hook body 46 having a base end swingably coupled to the other end of the device body 44 and having a hook 46C engaged with the net body 6 of the antiskid device 1 for the tire. The first and second hook bodies 45 and 46 are switchable between a deployed state where they extend outwardly of the device body 44 as it is revolved and a folded state where they adjoin one corresponding face of the body 44. The middle of the device body 44 is provided with a third hook body 52 having a hook 52A for locking an outer clamping rope 5 arranged along a widthwise outer edge of the net body 3 of the antiskid device 1 for 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 slip on an icy and snowy road surface and a tightening device used for the anti-slip device.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. Hei 8-20210 discloses a tire anti-slip device (vehicle anti-slip device) and a tightening device (tightening device). In this conventional technique, a base end of a pair of first and second hook bodies (hooks) is swingably connected to a diagonal section of an apparatus body (rigid plate) having a tool engagement body (fitting portion). The net body (slip stopper) is mounted on a tire by switching the first and second hook bodies between an extended state and a folded state, and a stopper (lock projection) having the hook folded state at a diagonal portion. It was intended to be held at.

[0003]

In the above-mentioned prior art, when the vehicle is mounted on a tire and traveling, the centrifugal force due to the rotation of the tire during traveling and the snow and snow cannot be obtained simply by holding the folded state of the hook with the lock projection. There is a possibility that the first and second hook bodies may be extended due to the collision of the lump and the like, and the first and second hook bodies may be in an extended state. In this case, there is no function as a slip stopper, and conversely, the vehicle body is damaged by the slip stopper. There was a possibility that it would be. For this reason, in the above-described conventional technique, a hole is formed in a diagonal portion of the apparatus main body so that a lock hook for locking the rotation of the hook can be inserted and removed together with a lock projection, and the lock attached to the outer tightening cable (tightening band). The extension of the first and second hooks due to the turning of the apparatus main body (rigid plate) is prevented by making the hook freely insertable into and removable from the hole.

However, the work of engaging and disengaging the hook of the lock hook from the hole formed in the rigid plate is very troublesome because the lock hook is attached to the tightening band and the positioning with the hole is difficult. Met. Also,
If the engaging force between the lock hook and the hole is weakened, or the engaging force is reduced due to wear during use, etc., the lock hook is detached from the hole due to centrifugal force due to tire rotation or collision of ice snow and the like, and the unlocking direction. Rotation (turning)
Was not able to stop.

Therefore, according to the present invention, a first hook body and a second hook body provided in an apparatus main body are engaged with a net main body to form the first hook body and the second hook body.
The net body is tightened by changing the two-hook body from the extended state to the folded state, and the first to first hooks are engaged with the third hook body provided on the apparatus main body in the tightened state. It is an object of the present invention to provide a tightening device in which the three hooks cooperate to reliably prevent the device body from turning, and a tire anti-slip device provided with the tightening device.

[0006]

According to the present invention, there is provided a fastening device comprising a tool body having a tool engaging portion, and a base end having a base end with respect to one end of the tool body. Hook body 45 having a hook 45C engaged with the net body 6 of the tire anti-slip device 1 so as to swing freely and a base end portion swingable with respect to the other end of the device main body 44. And a second hook body 46 having a hook 46C engaged with the net body 6 of the tire anti-slip device 1.
Reference numerals 5 and 46 denote the main body 4 as the apparatus main body 44 turns.
4 is switched between an extended state extending outward and a folded state close to one surface of the main body 44, and the net main body 3 in the tire anti-skid device 1 is provided in the middle of the main body 44. A third hook body 52 having a hook 52A for hooking the outer tightening cord 5 provided along the outer edge in the width direction is provided (claim 1).

The tightening device 43 having such a configuration
When the tool is fitted to the tool engaging portion 47 of the device main body 44 in a state where the hooks 45C and 46C of the first and second hook bodies 45 and 46 are engaged with the net main body 3, the device main body 44 is turned. The first and second hook bodies 45 and 46 are brought close to one surface of the apparatus main body 44 to be folded and tighten the net body 3 covered with the tire 2. Thereafter, by engaging the outer tightening cable 5 with the hook 52A of the third hook body 52 provided in the device main body 44, the mounting of the tire antiskid device 1 on the tire 2 is completed.

In this mounting operation, the third hook body 52
Since the outer tightening cable 5 is engaged with the hook 52A, the mounting operation can be performed easily and quickly as compared with the conventional example in which the lock hook is inserted into and removed from the hole. After the anti-slip device 1 is mounted on the tire 2, the first and second hook bodies 45 provided on the device main body 44,
46 is engaged with the net body 3 of the anti-slip device 1 facing in the circumferential direction and tightens the net body 3 in the circumferential direction, while the outer tightening cable 5 is connected to the third hook body 52 of the device main body 44. The third hook 52 is engaged with the hook 52A, and the third hook 52 is in the tire centripetal direction.
The two-hook members 45 and 46 and the third hook member 52 in the tire centripetal direction reliably prevent the device body 44 from turning in the unlocking direction.

In the above-mentioned first aspect, the base end of the third hook body 52 is connected to the apparatus main body 44 so that the hook 52A swings in the tire circumferential direction and in and out of the tire with respect to the apparatus main body 44. Is recommended (claim 2). By adopting such a configuration, the engagement of the outer tightening cable 5 with the hook 52A of the third hook body 52 becomes easier and quicker, and after the cable 5 is engaged with the hook 52A, Disengagement due to swinging of the three hook bodies 52 in the tire circumferential direction and in and out of the tire is reliably prevented.

The first and second hook members 4 according to claim 1.
Reference numerals 5 and 46 are pivotally connected at their base ends to diagonal portions of the apparatus main body 44, and the first and second hook bodies 45 and 46 are formed such that one length is longer than the other length in the extended state. Is recommended (claim 3). By employing such a configuration, even a non-strength person such as a woman or an elderly person can easily engage and disengage the net main body 6 by gripping one of the extended first and second hook bodies 45 and 46. Therefore, the mounting work can be performed quickly and lightly. In this case, if both the first and second hook bodies 45 and 46 are formed to be long, the tightening force when switching to the folded state and tightening becomes insufficient, which causes the net body 6 to float and idle, so that only one of them is used. Is longer than the other.

The first and second hook members (45, 46) according to claim 1 or 3, each base end of which is swingably connected to a diagonal portion of an apparatus body (44). When the 45 and 46 are folded into one surface of the apparatus main body 44, it is recommended that the stoppers 50 and 51 for maintaining this state are formed to protrude at diagonal portions of the apparatus main body 44 (claim 4). ). By adopting such a configuration, the first and second hook bodies 4 formed by the stoppers 50 and 51 are provided.
The holding force of the folded state (folded state) of 5, 46 acts, and the rotation (turning) of the device main body 44 in the unlocking direction is reliably prevented, and therefore, the tire 2 is mounted with the non-slip device 1 to travel. Even if there is a centrifugal force or a collision of ice and snow, the slip-prevention device 1 does not run idle and not only reliably maintains the non-slip function, but also the anti-slip device 1 and the fastening device 43 used therefor are durable. Improve the quality.

In the first or second aspect, the hook 52A of the third hook body 52 can prevent the outer tightening cable 5 from coming off (disengagement) even in a configuration along the tire centripetal line. Hook 52 of three hook body 52
It is recommended that A is bent so as to have an angle with respect to the tire centripetal line when the outer tightening line 5 is hooked on the hook 52A (claim 4). As described above, when the hook 52A of the third hook body 52 is bent so as to have an angle with respect to the tire centripetal line, a force in the unlocking direction due to the tension of the outer tightening cable 5 acts on the device main body 44. This makes it difficult to reliably prevent the outer tightening cable 5 from coming off, and for this purpose, the angle is desirably about 10 ° to 30 °.

In the above-mentioned claim 1, one of the hooks 45C, 46C of the first and second hook bodies 45, 46 is caulked to the outer side of the net body 3 in the tire anti-skid device 1, and the other is hooked. It is recommended that the outer part of the net main body 3 be detachable.
First and second hook bodies 45 and 46 provided in the apparatus main body 44
Both hooks 45C and 46C can be freely engaged and disengaged from the net body 3, but as described above, the first
One of the two hooks 45 and 46 is caulked to the net body 3 and the other hook is engaged with or disengaged from the net body 3, so that the net body 3 is provided with the tightening device 43. Therefore, there is no risk of loss and management of storage, storage, and the like is facilitated.

In the above-mentioned claim 1 or 6,
Hooks 45C, 46C of first and second hook bodies 45, 46
One of the first and second hook bodies 45 is fixed to the outer side of the net main body 3 in the tire anti-skid device 1 by caulking, and the other is detachable to the outer side of the net main body 3. It is recommended that one of the first hooks 45, which is swaged to the outer portion of the net body 3 in the extended state, be longer than the other second hook 46 (claim 7). As a result, as described above, even a non-strength person can quickly and lightly perform the mounting operation.

Further, the present invention provides a tire anti-slip device provided with a belt-shaped and non-metallic net body 3 wound around the outer periphery of the tire 2 in order to achieve the above-mentioned object.
The following technical measures have been taken: That is, the fastening device 43 according to any one of claims 1 to 7, wherein the tire antiskid device according to the present invention tightens the outer edge in the width direction of the net main body 3 in the tire center direction or the tire circumferential direction.
Are attached to the widthwise outer edge of the net main body 3 (claim 8).

Further, the tire anti-slip device according to the present invention comprises a belt-shaped net body 3 in which a plurality of non-metallic net components 6 are juxtaposed in the tire circumferential direction, and a widthwise inner side of the net body 3. The inner tightening cable 4 attached along the edge, a plurality of outer connecting members 15 attached to the outer edge in the width direction of the net main body 3 at circumferential intervals, and each of the outer connecting members 15 An outer tightening cable 5 which is detachably hooked and tightens a widthwise outer edge of the net main body 3 toward the center of the tire; and an interval between the net components 6 adjacent to a halfway portion of the net main body 3 in the longitudinal direction. An opening (8) formed by widening the opening is formed, and the opening is formed on both sides of the opening (8) on the outer side in the width direction and on the side of the opening (8) in the longitudinal direction. Of the tightening device 43 The two hook bodies 45 and 46 are locked, and the outer tightening line 5 is locked to the hook 52A of the third hook body 52 in the device 43 (claim). 9).

Further, in the above-mentioned claim 9, the opening 8
The outer connecting tool 15 located on both sides of the hook 15A has a hook 15A on which the outer tightening cable 5 is hooked, and has a pair of legs 15B bifurcated from the hook 15A. It is recommended that the pair of legs 15B be caulked to the net main body 3 at circumferential intervals. With this configuration, the force for tightening the opening 8 is reliably transmitted to the outer tightening cable 5, and the outer tightening cable 5 is hooked to the outer connecting member 15. Also, since the wobble of the hook 15A is small, it can be made quick and light.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, FIG. 2 and FIG. 4, the tire slip prevention device 1 of the present embodiment includes a tire 2
, A band-shaped net main body 3 covering the outer periphery of the net main body 3, an inner tightening rope 4 formed of a non-extended rope connected to one end in the width direction of the net main body 3 (inside of the tire 2), and the other end in the width direction of the net main body 3 And an outer tightening cable 5 that is hung on the side (outside of the tire 2) and pulls the other end side toward the center of the tire.

The net body 3 has six net components (net components) 6 in its longitudinal direction (tire circumferential direction).
Are arranged side by side, and both ends in the longitudinal direction of the net of each net constituting piece 6 are connected to each other via the inner tightening cable 4 at one end in the width direction, and the other ends in the width direction. On the end side, they are connected to each other by a connection fitting 7.
In addition, the space between the net component pieces 6 at the central portion in the longitudinal direction of the net main body 3 is slightly widened, and in this portion,
The net constituting piece 6 is connected to the inner tightening cable 4 only at one end in the width direction without using the connecting fitting 7. The space at the center in the longitudinal direction constitutes a later-described grounding opening 8.

As shown in FIG. 3, each net constituting piece 6
Core material stretched over a predetermined net pattern (Fig. 20 (2)
No. 6C) is coated with a nonmetallic elastic material such as synthetic rubber or natural rubber. A central portion in the width direction of the net component piece 6 is a tread corresponding region (ground contact region) 9 that contacts the ground in correspondence with the tire tread, and both sides of the tread corresponding region 9 in the width direction are the tire 2.
And a shoulder portion corresponding region 10 corresponding to the shoulder portion, and both sides in the width direction of the shoulder corresponding region 10 are connected to the inner tightening cable 4 and the outer tightening cable 5 corresponding to the sidewall portion of the tire. The outer and inner connecting portions 12 and 13 are hooked with the connecting metal 7 and the inner and outer connecting members 15 and 16 (caulking prevention). ), It is formed slightly thick as shown in FIG.

The tread corresponding area 9 is a part which performs a main anti-slip function of the tire anti-slip device 1, and a plurality of spike pins 9a are embedded in this part. Both ends in the longitudinal direction of the net component piece 6 are formed in a narrow band shape extending straight in the width direction.
On the other end in the width direction of 4 (outside of the tire 2), the connection fitting 7 for connecting the respective net constituent pieces 6 to each other is provided. 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 has an inclined portion extending while being inclined outward and in the front-rear direction in the width direction. 6b, and the front and rear ends of the inclined portion 6b are connected to both ends of the band portion 14.

The other end in the width direction of the band portion 14 (outside the tire).
Is provided with a hook (outer connecting tool) 15 for hooking the outer tightening cable 5, and the outer connecting portion 13 is constituted by one end of the band-shaped portion 14 and the hook 15. ing. At one end in the width direction of the band portion 14 (inside the tire), there is provided an inner connecting member 16 made of a hook metal for connecting the inner tightening cable 4.
The inner connecting portion 12 is constituted by 6 and the other end of the band portion 14. Further, in the center of the net component piece 6 in the longitudinal direction of the net, the inclined portion 6b
A pair of front and rear latching pieces 17 are provided that protrude outward in the width direction while being inclined in the opposite direction.
The tips of 7 intersect each other to form a substantially V-shape, and the hook 15 and the inner connecting member 16 are also caulked at this intersection.

Therefore, the hooking piece 17 and the inner and outer connecting parts 15 and 16 attached thereto also constitute the inner connecting part 12 and the outer connecting part 13. An inner connecting portion 12 and an outer connecting portion 13 are formed at three locations, both ends in the longitudinal direction and a central portion. As shown in FIGS. 1 and 2, the inner connecting member 16 is fixed to the inner tightening cable 4 by caulking with respect to each of the two net constituting pieces 6 near the longitudinal end of the net. 1
6 are caulked and fixed to the band portion 14 and the hooking piece 17, and these four net constituting pieces 6 are fixed so as not to move in the longitudinal direction of the rope of the inner tightening cable 4.

On the other hand, with respect to the two net constituting pieces 6 sandwiching the opening 8 at the center in the longitudinal direction of the net, the connecting member 16 of one inner connecting portion 12a located on the opposite side to the opening 8 is connected to the inner tightening cable 4 The inner connecting member 16 is fixed to the band-like portion 14 by caulking, but the connecting member 16 of the two inner connecting portions 12b on the opening 8 side moves in the longitudinal direction with respect to the inner tightening cable 4. It is connected so that it can be. Accordingly, the two net forming pieces 6 sandwiching the opening 8 allow the two inner connecting portions 12b, 12b to slide in the longitudinal direction along the inner tightening cable 4. As described above, when the inner connecting portion 12b on the opening 8 side can be moved in the longitudinal direction of the rope with respect to the inner tightening cable 4, when the tire 2 is attached to the tire 2,
The opening 8 for grounding can be expanded by bending the net constituting piece 6 along the fastening rope 4 via these inner connecting portions 12b, which is useful for mounting the non-slip device 1 described later.

In the unfolded state of the net constituting piece 6 shown in FIG. 3, the inner and outer connecting portions 12, 1 at the center in the longitudinal direction of the net.
The third hooking pieces 17 are arranged closer to the center in the width direction (closer to the ground area) than the end positions of the band-shaped portions 14 of the inner and outer connecting portions 12 and 13 at both ends in the longitudinal direction of the net. Therefore, 3
Inner tightening cable 4 connected to the inner and outer connecting members 15 and 16
In addition, the outer tightening cable 5 is configured to bend inward in the width direction by a small angle α, β when the net constituting piece 6 is deployed. As shown in FIGS. 1 and 2, the band-like portions 1 of the two net constituent pieces 6, 6 located on both sides of the opening 8.
4 has an end corresponding to the outside of the tire.
A hook hole (hook portion) 18 for hooking the hooks 45C and 46C of the first and second hook bodies 45 and 46 of the tightening device 43 described later is formed separately from the hook hole 45.

On the other hand, the two ends 2 of the net body 3 in the longitudinal direction are
The net forming pieces 6 and 6 are not provided with the hooks 15 constituting the outer connecting portions 13 at the outer ends in the longitudinal direction of the nets, and the connecting hooks 41 of the buckle device 27 described later are provided in this portion. An engagement hole 19 to be engaged is formed.
The inner tightening rope (cord-like body) 4 is made of a non-stretchable rope that does not substantially extend even under tension, and a male member 72 of a connection buckle 71 described later is connected to one end of the rope. The female member 73 of the connection buckle 71 is connected to the other end of the inner tightening cable 4.

In this embodiment, the outer tightening cable 5 having a stopper mechanism is employed. As shown in FIG. 5 and FIG. 6, the outer tightening cable 5 includes a rope member 26 formed by connecting the inner loop portion 23 and the outer loop portion 24 in a double inner / outer loop via a folded portion 25. The buckle device 27 includes a buckle device 27 in which the folded portion 25 of the rope member 26 is movably inserted in the length direction thereof, and a stopper mechanism 28 provided in the buckle device 27.

The rope member 26 is composed of a single non-stretchable rope 29 that does not substantially extend even if a part of the outer diameter loop portion 24 receives a tension from the inner diameter loop portion 23 through the folded portion 25. The remaining part of the outer diameter loop portion 24 is constituted by one elastic rope 30 made of an elastic material such as rubber. The "rope" in the non-extended rope 29 (including the case of the inner tightening rope 4) and the elastic rope 30 is used in the sense of a string-like long body. It is not used in particular to limit. Accordingly, the "rope" in this case includes not only a round cross-section but also a belt or band having a flat cross section.

As shown in FIG. 6, the buckle device 27
A casing 33 having insertion portions 32 of the folded portion 25 on both sides in the width direction, a pair of left and right wrapping pieces 34 pivotally mounted inside the casing 33, and swinging parts below the respective wrapping pieces 34. It comprises a pair of left and right stopper pieces 35 freely pivotally connected, and a switch member 36 for moving the stopper pieces 35 in the rope releasing direction. Of these, the insertion portions 3
The folded portion 25 inserted in the second piece 2 is wound around the stopper portion 35, and a tooth portion 37 is formed on the upper surface of the stopper piece 35 to be in contact with the folded portion 25 wound around the wound piece 34. A spring member 38 for urging the teeth 37 toward the lower surface side of the folded portion 25 is provided on the pivotally attached portion of the stopper piece 35.

The movement of the rope member 26 in the diameter increasing direction (the direction of arrow A in FIG. 6) of the inner loop portion 23 is regulated by the winding piece 34, the stopper piece 35, and the spring member 38. The stopper mechanism 28 is configured to allow the loop portion 24 to move in the radially expanding direction (the direction of arrow B in FIG. 6). That is, the winding piece 3
4 is pulled in the direction of the arrow A in FIG. 6, the teeth 37 of the stopper piece 35 are more and more bite into the folded portion 25. It cannot be moved in any direction.

On the other hand, when the folded portion 25 wound around the winding piece 34 is pulled in the direction of arrow B in FIG. 6, the winding piece 34 swings downward and the tooth portion 37 of the stopper piece 35
Is released from the folded portion 25, so that the folded portion 25
Can be forcibly moved in the arrow B direction.
The switch member 36 is provided at the center of the casing 33 so as to be slidable up and down. The lower end of the switch member 36 is in contact with a release portion 40 protruding from the inside of each of the stopper pieces 35. For this reason, the switch member 36
Is moved downward, the release portion 40 moves downward, the tooth portion 37 of the stopper piece 35 is released from the folded portion 25, and the restriction of the rope movement by the stopper piece 35 can be released.

On the upper surface of the casing 33, a bifurcated connecting hook 41, which is detachably hooked on the engaging hole 19 on the side of the net body 3, is provided swingably.
As shown in FIG. 4, the tire anti-slip device 1 of the present embodiment
Is provided with a tightening device 43 for tightening the widthwise outer edge of the net body 3 in the tire circumferential direction. In the present embodiment, the tightening device 43 is connected to the net component pieces 6, 6 located on both sides of the opening 8. 6 are used to tighten the widthwise outer ends of each other to restrict expansion of the opening 8.

As shown in FIGS. 4 (2) and FIGS. 7 to 12 (1) and (2), the tightening device 43 is
And a pair of (first and second) hook bodies 45 and 46 and a third
And a hook body 52. The device body 44 is formed as a rectangular plate-like piece having a certain thickness from a hard plastic metal or a composite material thereof.
A tool engaging portion 47 is provided at the center of the plate surface,
A pivot base 4 for swingably holding the first and second hook bodies 45 and 46 is provided on both left and right sides of the tool engaging portion 47.
8 are provided.

The tool engaging portion 47 is a portion for engaging an appropriate turning operation tool (see reference numeral 100 in FIG. 20) when turning the apparatus main body 44 about this forming position. For example, if the turning operation tool 100 having the handle 100B is the engaged portion 100A having a square rod-shaped tip, the tool engaging portion 47 is also formed as a corresponding (fittable) square hole. As shown in FIG. 7, the tool engaging portion 47 in the present embodiment is
4 comprises a through hole penetrating in the front and back directions. The through hole includes a square hole 47A having the same cross section as the tip of the operating tool, and a small hole 47B having a smaller diameter than the square hole 47A. Is formed in the stepped hole.

As described above, in this embodiment, since the tool engaging portion 47 is formed of the through hole penetrating the apparatus main body 12 in the front-to-back direction, ice and snow accumulate in the engaging portion 47 and the operation tool cannot be inserted. Can be prevented beforehand. Further, the through hole has a small hole portion 4 having a smaller diameter than the square hole portion 47A.
7B, the tip of the operating tool inserted from the front side of the device main body 44 hits the step portion (around the small hole) of the through hole and protrudes from the back side of the main body 44. In addition, the tire of the tip of the operation tool 100 is not damaged.

The device main body 44 is used in such a manner that the surface 44A on the insertion side of the tool engaging portion 47 faces outward and the other surface 44B contacts the tire. Therefore, hereinafter, for convenience of explanation, the surface 44A on the insertion side of the tool engagement portion 47 is referred to as “front”, and the other surface 44B is referred to as “back”. As shown in FIGS. 7 to 12, in the first embodiment, the pivot base 48 includes a through hole 48 </ b> A penetrating in a thickness direction at a diagonal portion of the device main body 44 and the through hole 4 </ b> A.
It is formed by a circular portion 48B protruding from the front surface 44A of the 8A.

Then, on the front surface 44A of the apparatus main body 44,
A J-shaped step portion 49 is formed around the opening of the pivot base portion 48 in a front view. The step portion 49 is provided at the pivot base 4.
8 (through hole 48A), a first step portion 49A extending in the horizontal direction tangentially circumscribing one point of the opening edge portion of the opening portion 8A, and an arc-shaped guide step portion 49B rising at one end thereof. When switching the 1.2 hook bodies 45 and 46 from the extended state to the folded state around the through hole 48A,
Retaining portion (hook) 45 of first and second hook bodies 45, 46
When A and 46A come into contact with the first step portion 49A while being guided by the guide step portion 49B, the retaining portions 45A and 46A are prevented from coming off.
The folded state is maintained via A.

The first and second hook bodies 45 and 46 are formed by bending a metal wire or formed of high-strength plastic, and have pivot shafts 45B and 46 at their bases.
The retaining portions 45A, 46A formed through B are inserted into the through holes 48A of the pivot base 48 from the back surface 44B side of the apparatus main body 44 and are swingably engaged therewith. And FIGS.
As shown by, hook portions 45C and 46C are provided at the distal ends of the first and second hook bodies 45 and 46, respectively. Also, as described above, the device body 4 is attached to the roots of the hook bodies 45 and 46.
With the pivot base 48 of 4 being formed as a through hole 48A, hook-shaped retaining portions (base ends) 45A, 46A are provided via the pivots 45B, 46B. .

As shown in FIGS. 1 and 2 and FIGS. 10 and 11, the hook portions 45C and 46C are formed with engagement holes 1 formed in the connecting pieces 6A of the opposing net component pieces 6 in the opening 8.
8 and the hook portion (hook) 4
As shown in FIGS. 10 and 11, one of 5C and 46C is bent into a square shape and is rotatably fixed by caulking, and the other hook portion is engaged with a corresponding locking hole 18A so as to be freely disengageable. Therefore, the tip is bent outward to facilitate insertion and removal (see FIG. 11). In this way, by locking one of the hook portions 45C and 46C to the net body 3 so as to be freely rotatable (swinging), the fastening device 43 itself is not lost, and handling and storage are also possible. It will be easier.

Now, the first and second hook bodies 45 and 46 are shown in FIG.
As shown by 0 and 11, one hook 45C is crimped to the locking hole 18 and is in an extended state extending to the left and right sides of the apparatus main body 44, and the other hook 46C is connected to the locking hole 18A. When the apparatus main body 44 is rotated by 180 ° around the tool engagement portion 47 from the state of being inserted into and engaged with the hooks 45 and 46 as shown by the arrow symbol 44C formed on the front surface 44A, the hook bodies 45 and 46 become as shown in FIG. And FIGS.
As shown by, it will be possible to switch to the mutually parallel folding state at a close position across the tool engagement portion 47,
The net body is tightened and mounted on the three tires 2 in such a manner that the opening 8 of the net body is reduced.

Further, the device body 44 is turned 18
If it is turned by 0 °, the first and second hook bodies 45, 46
Is switched from the folded state shown in FIG. 4 (2) to the extended state (FIG. 9). Here, the device body 4
The back surface 44B of the fourth member 4 needs a certain amount of force to get over the first and second hook bodies 45 and 46 when the first and second hook bodies 45 and 46 are changed from the extended state to the folded state, but when the first and second hook bodies 45 and 46 are changed from the folded state to the extended state. The stoppers 50 and 51 are provided at the diagonal portions of the apparatus main body 44, respectively.

As shown in FIG. 8, the stoppers 50, 51 are raised (T) from the sides of the apparatus main body 44 to prevent the folded first and second hook bodies 45, 46 from coming off. The rigidity is increased, and the guide surfaces 50A and 51A at the time of folding are formed as inclined surfaces to facilitate overcoming, and when the guide surfaces 50A and 51A are folded close to the back surface 44B, the engaging surfaces 50B and 51A are formed. By engaging with 51B, the folded state is maintained to prevent accidental reversal of the device main body 44. Further, the protruding ends 50C, 51C of the stoppers 50, 51 are formed on the surface portions to suppress the contact pressure with the tire 2. , To prevent the tire 2 from being damaged.

Further, the first and second hook bodies 45 and 46 are bent in a "-" shape as shown in FIG. 8 and the like. As described above, when the hooks 45 and 46 are folded (when the net body is tightened), the imaginary line T connecting the centers of the pivots 45B and 46B of the hooks 45 and 46 is moved to the respective positions. The hook portions 45C and 46C have a positional relationship such that they are folded beyond the virtual line T. Therefore, even when opposing tensile forces P act on the hook portions 45C and 46C of both hook bodies 45 and 46 via the connected portion 6A of the non-slip body 6, these tensile forces P are equal to the first. The two hooks 45, 46 do not act to return to the extended state, but rather act to increase the degree of folding of the hooks 45, 46. Hooks 45C, 46C of bodies 45, 46
On the other hand, even when opposing tensile forces P are applied via the connected portion 6A of the non-slip body 3, these tensile forces P act to further separate the hook bodies 45 and 46 from the apparatus main body 44. However, the inversion of the device main body 44 can be prevented, and the tightened state of the net body 3 is reliably maintained even when the tire 2 is running.

The half-bent portions 45D and 46D of the first and second bodies 45 and 46 are reliably maintained in the folded state by the stoppers 50 and 51 (see FIG. 8). Further, the device body 44
In addition, a third hook body 52 having a hook shape is provided at the left and right central portions of the apparatus main body 44 and at a position deviated upward or downward. The third hook 52 is a hook 15 attached to the outside of the non-slip body 3 in the width direction.
In the same manner as described above, when the tire is mounted on the tire, it is wound around by the outer tightening cable 5, so that the tightening device 43 can be prevented from jumping up during running.

The third hook body 52 may be fixed to the apparatus main body 44 by an implanted (partial insert) structure. However, as shown in FIGS. The base portion 52A is swingable in the tire circumferential direction and also swingable in and out of the tire.
2B is inserted and supported by a mounting hole 52C formed in the apparatus main body 44. The circumferential swing range X shown in FIG.
0 ° to 100 °.
D is formed as two substantially triangular sides, and the base 52B is pivotally attached to the mounting hole 52C, and
From the main body 44.
Are turned, the first and second hook bodies 45, 46 and the third
The hook body 52 does not interfere.

On the other hand, the inward / outward swing range Y is 10 ° to 30 °.
When the hook 52A of the third hook body 52 swings in the circumferential and inward / outward directions, the outer tightening cable 5 hooked on the hook 52A is the same as the hook hook 15. In the mounted state (see FIG. 4 (2)), the tension of the outer tightening cable 5 prevents the device main body 44 from being excessively inclined, and prevents the outer tightening cable 5 from being tilted.
Is securely prevented from coming off, and the apparatus main body 44 is first to first.
The three hooks 45, 46, 52 maintain the well-fitted state (see FIG. 4 (2)) by the engagement of the three hooks 45, 46. Here, loosening of the net main body 3 during running (rotation) of the tire 2 and centrifugal force The blisters and the like are surely prevented, and the slip prevention function of the net body 3 is sufficiently exhibited, and the durability of the net body 3 is also improved.

The hook 52A of the third hook body 52 is shown in FIG.
As shown in (2), it is bent (Z) so that it has 10 to 35 degrees with respect to the centripetal line (tire radiation) in the mounted state.
Then, as shown in FIG. 4 (2), when the fastening device 43 is attached (when the net body is tightened up), the outer tightening cable 5 from the hook 52A even if the device body 44 is slightly inclined.
Therefore, the end surface (the back surface 44B side) of the mounting hole 52C is formed in an elliptical shape. Further, as shown in FIG. 12B, an elastic rope 30 such as rubber and a non-extensible rope (tape) 29 are hooked on the hook 52A. , 3
8 to 12 so that they do not overlap when 0 is paralleled
mm, the tip of the hook 52A is about 8 to 14 mm and the tip is bent inward to prevent the two 29, 30 from coming off.

This makes it difficult for the hooks 29 and 30 to be hooked on the hook 52A.
Is bent Z with respect to the centripetal line, thereby preventing the locking difficulty. Further, as shown in FIGS. 9A and 9B, the first and second hook members 4
The base projection 53 and the recess 54 are formed so that the first and second hook bodies 45 and 46 are not easily detached when the first and second hooks 5 and 46 are folded in close proximity. In the figure, the pedestal projection 53 and the recess 54 are formed on one of the stoppers 51, but may be formed on both the stoppers 50 and 51.

A rivet head 52E is formed at the tip of the base 52B of the third hook body 52 to prevent the rivet from being removed from the mounting hole 52C (see FIG. 12 (2)). On the other hand, as shown in FIG.
Is provided with a connection buckle 71 which can easily connect both ends of the cord-like body with one touch. In this embodiment, the connection buckle 71 is used to connect both ends of the inner tightening cable 4. As shown in FIGS. 14 and 15, the connection buckle 71 is connected to a male member 72 connected to one end of the inner tightening cable 4 and is connected to the other end of the tightening cable 4 so that the male member 72 can be detachably attached. And a female member 73 that can be inserted therethrough.

The male member 72 includes a substantially rectangular mounting member 74 and an insertion pin 75 protruding from the distal end surface of the mounting member 74. This insertion pin 75
Is formed in the shape of a stepped rod from a distal end portion 76 formed in a columnar shape and a root portion 77 formed in a square cross section. The distal end portion 76 has an engaging peripheral groove 78. On the other hand, the female member 73 includes an attachment body 80 having an insertion hole 79 through which the insertion pin 75 is inserted, and an operating member 81 pivotally pivoted in the attachment body 80. The opening side of the insertion hole 79 is formed in a square cross section where the root portion 77 of the insertion pin 75 just fits.
The back side of 9 is enlarged downward to provide a storage space for the operation member 81.

The operating member 81 has a retaining portion 82 at its upper end for engaging with the insertion pin 75 inserted into the insertion hole 79 to prevent the pin 75 from coming off. A release portion 83 to be detached is provided at a lower end portion. That is, the operation member 81 is
2 is located inside the mounting body 80 and the release portion 83 is inserted through the mounting body 80 so as to be exposed to the outside of the mounting body 80. Is pivotally attached to the mounting body 80 of the female member 73 so as to be able to swing up and down in a state inclined with respect to. A spring member 85 that urges the retaining portion 82 of the operating member 81 toward the insertion pin 75 is wound around the fulcrum pin 84.

Further, in the present embodiment, the insertion pins 75 of the male member 72 and the insertion holes 79 of the female member 73 are arranged such that their center lines substantially coincide with the extension lines of the inner tightening cable 4. 80 respectively. A U-shaped hole 86 is formed in each of the attachment bodies 74 and 80 of the male member 72 and the female member 73, through which each end of the inner tightening cable 4 is inserted.
The male member 72 and the female member 73 are connected to one end and the other end of the inner tightening cable 4 by fastening the insertion end of the inner tightening cable 4 inserted into the U-shaped hole 86 with a fastener 87. Further, each of the attachment bodies 74 and 80 is fixed to the band-like portion 14 of the net constituting piece 6 via the inner connecting member 16.

According to the connection buckle 71 of the present embodiment,
From the disengaged state shown in FIG.
Is inserted into the insertion hole 79 of the female member 73, the retaining portion 82 of the operation member 81 once swings downward to fit into the engagement peripheral groove 78 of the insertion pin 75, and the insertion pin 75 is prevented from falling out of the insertion hole 79 and both members 72, 7
3 are instantaneously connected. Therefore, only by forcibly inserting the male member 72 into the female member 73, it is possible to perform one-touch connection between both ends of the inner tightening cable 4 and between the belt-shaped portions 14 of the net main body 3.

Further, since the base portion 77 of the insertion pin 75 is fitted into the opening side of the insertion hole 79, the male member 72 is connected to the female member 73 in a state where the relative rotation thereof is regulated. Twisting of the inner tightening cable 4 after connection is effectively prevented. Further, since the center lines of the insertion pin 75 of the male member 72 and the insertion hole 79 of the female member 73 substantially coincide with the extension line of the inner tightening cable 4, the male member 72 and the female No moment in the separating direction is generated at the connection portion of the member 73, and the connection buckle 71 is prevented from being accidentally detached by excessive tension generated on the inner tightening cable 4.

To release the male member 72 from the female member 73, the release portion 83 of the operating member 81 may be pushed up to forcibly separate the two. In the connection buckle 71, for example, as shown in FIGS. 16B and 16C, the cross-sectional shape on the opening side of the root portion 77 of the insertion pin 75 and the insertion hole 79 may be a shape other than a square. . That is, when the root 77 of the insertion pin 75 is square as shown in FIG. 16 (a), the relative rotation between the male member 72 and the female member 73 can be restricted, but both are twisted by 90 degrees from the beginning. May be connected.

Therefore, the root 77 of the insertion pin 75 is made rectangular as shown in FIG. 16B, or a positioning projection 77A is provided on the outer periphery of the root 77 as shown in FIG. 16C. Is recommended. In this case, the insertion pin 75
Can be inserted only at a predetermined relative angle with respect to the insertion hole 79, so that the male member 72 can be effectively prevented from being twisted and connected to the female member 73.
In addition, the cross-sectional polygon referred to in this specification means a cross-sectional shape having a function of preventing rotation of the insertion hole 79, and a cross-sectional shape of the root portion 77 having the positioning projection 77A as shown in FIG. Also, the cross-sectional shape of the root portion 77 having a positioning concave portion (not shown) instead of the projection 77A is included.

Further, the mechanism for preventing the insertion pin 75 from falling off may be configured such that the upper end of the operation member 81 is hooked on a projection formed on the outer peripheral surface of the pin 75. Next, a method for mounting the tire slip prevention device 1 on the tire 2 will be described. First, the tire anti-slip device 1 is passed through the back side of the tire 2 so that the opening 8 at the center of the net body 3 corresponds to the ground contact portion of the tire 2, and the anti-slip device extends over the ground in the vehicle front-rear direction. 1 and the female member 73 at the other end is connected to the male member 72 at one end while lifting both ends of the inner tightening cable 4.

At this time, the net constituting piece 6 adjacent to the opening 8 is connected to the inner tightening cable 4 via the two inner connecting portions 12b on the opening 8 side so as to be movable in the longitudinal direction. , These net component pieces 6 are bent to form openings 8.
, The inner tightening cable 4 can be easily connected in a loop while avoiding the tire contact portion, and the tire 2
Anti-slip device 1 in an appropriate position without eccentricity
Can be attached. After the inner tightening cable 4 is connected by the connection buckle 71 as described above, the other end in the width direction of the net main body 3 is pulled out to the outside of the tire 2 so that the main body 3 extends along the outer periphery of the tire 2 and Tightening rope 5
The connecting hook 41 of the buckle device 27 is
Are respectively hooked on the engaging holes 19.

Thereafter, the outer ends of the net components 6 and 6 located on both sides of the opening 8 are connected and tightened by the tightening device 43 in the manner described above with reference to FIGS. As described above, the non-stretching rope 29 extending from both sides of the casing 33 of the outer tightening cord 5
And the elastic rope 30 is connected to each hook 1 of the net body 3.
5 and the third hook body 52
Is hooked on the hook 52A to complete the mounting on the tire 2. Before the non-stretch rope 29 and the elastic rope 30 are hooked, the tightening device 43 can tighten the opening 8.

In this case, as shown in FIG. 13, on the inner side of the tire after the tire anti-skid device 1 is mounted, the inner tightening cable 4 is bent at the three inner connecting portions 12 of the respective net constituting pieces 6 in a circular shape. And draws the inner edge in the width direction of each net component piece 6 in the tire center direction. On the other hand, on the outer side of the tire after the tire anti-skid device 1 is mounted, as shown in FIG. 4, a middle portion of the outer tightening cable 5 is hooked on each hook 15 and the third hook body 52, Since the net constituting pieces 6 and 6 on both sides of the opening 8 are tightened by folding the first and second hook bodies 45 and 46 by turning the apparatus main body 44 in the tightening device 43, each of the net components 6 and 6 is formed by the elastic force of the elastic rope 30. The outer edges of the net component pieces 6 are pulled in the tire center direction, and the net component pieces 6 located on both sides of the opening 8 are constantly pulled in a direction in which they are attracted to each other.

As shown in FIG. 4, by hooking the outer tightening cable 5 on the third hook 52 of the tightening device 43 in the middle of the opening 8, the tightening device 43 is moved by the outer tightening cable 5 in the tire center direction. As a result, it is possible to prevent the tightening device 43 from being easily detached from the net main body, and to prevent the interval at which the outer tightening cable 5 is hooked from becoming irregular even if the opening 8 is widened. The present invention
The present invention is not limited to the above embodiment, and various changes can be made within the meaning of the appended claims.

For example, in the above embodiment, the net main body 3
Exemplifies a divided type constituted by six net constituting pieces 6, but the connection buckle 71 and the tightening device 43 of the present invention are also applicable to the tire antiskid device 1 having a net body integrally formed in a belt shape. Can be adopted. The connection buckle 71 can be used not only for connecting the inner tightening cable 4 but also for connecting both ends of the outer tightening cable provided along the widthwise outer side of the net main body 3.
Is not only to tighten the outer edge in the width direction of the net body 3 in the tire circumferential direction as described above.
No. 93, it can also be used to tighten the net body 3 in the tire center direction.

Further, as the net constituting piece 6, one having a plurality of ladder-like portions inside, or a combination of the net-like portion and the ladder-like portion other than the above-mentioned net pattern is employed. can do. Further, the net component 6 is not limited to a core material coated with an elastic material such as rubber, but may include rayon, polyamide fiber, polyester fiber, polyolefin fiber, polyurethane fiber, cotton, wool, and the like in the elastic material. Various types of organic and inorganic short fibers such as glass fiber, carbon fiber, rock wool, and asbestos may be mixed, or may be formed of a resin material.

The numbers of the inner connecting portions 12 and the outer connecting portions 13 are not limited to those described above, and may be changed. 6
May be connected in the longitudinal direction. Another useful embodiment of the present invention will be described with reference to FIGS. Since the basic configuration is common to the above-described configuration, the common reference numerals are used for the common parts of the configuration and operation. In FIG. 17 (1), both ends of the inner tightening cable 4 are formed in eyeglass connection portions 4A and 4B, and one of them is provided with a connection fitting 4c, as shown by an arrow 4D shown in FIG. 17 (3). By hooking the connection fitting 4C on the connection part 4B, the connection part 4B has the same function as the male / female connection tool 71.

The outer tightening cable 5 is composed of several rubber rings 5A, in the figure, three rubber rings 5A.
The hook 100C of the operation tool 100 indicated by reference numeral 2 is used to engage with the hook portion of the outer connector 15, and the net main body 6 covering the tread of the tire 2 is tightened and mounted thereon. Bands 14 facing each other at the opening 8 for grounding
Is bent in a substantially "<" shape so that it can be easily pulled in by the tightening device 44. The meshes 6B of the net on both sides are formed more densely than the meshes of the other portions. The outer connector 15 shown in FIG. 21 is fixed by swaging.

That is, in FIG. 21, the outer connecting members 15 located on both sides of the opening 8 are formed by bending a single metal bar such as an iron material and have a hook 15A for hooking the rubber ring 5A. And a pair of legs 15B bifurcated from the hooks 15A, and the ends of the legs 15B are caulked 15C over two meshes 6B to form a net body. 6 are mounted at intervals in the circumferential direction. Here, the tightening force of the tightening device 44 is transmitted to the net main body 6 via the rubber ring 5A or the like. However, since the outer connecting members 15 on both sides of the opening 8 have the bifurcated legs 15B, the mesh Even if the 6B is dense, the rubber ring 5A can be evenly tightened, and the hook of the rubber ring 5A can be hooked to one hook instead of the individual hooks 15A to ensure quick and light hooking work.

The basic structure and operation of the tightening device 43 are the same as those described above, but as described in comparison with FIG. 19, one of the first and second hook bodies 45 and 46, in the figure, The length of the body 45 is smaller than the length of the second hook body 46 by a code L.
For example, the length is increased by about 1.5 cm. That is, in this extended state, the first and second hook bodies 45 and 46 whose base ends are swingably mounted at the diagonal portions of the apparatus main body 44 are crimped to the net main body 6 in this example. The length of the body 45 is formed longer than the other hook bodies 46, and the operation of locking the second hook 46 to the net main body 6 can be performed quickly and lightly regardless of age and gender.

The length of the second hook body 46 can be increased, but only the length of one of the second hook bodies 46 is increased and the other is shortened. When both the first and second hook bodies 45 and 46 are lengthened, the first and second hook bodies 45 and 46 are operated by the operation tool 100 or the like.
When 46 is in the folded state (when tightened), if both are long, the tightening force may be insufficient, so only one hook body is formed longer than the other. Further, with respect to the net main body 6, the ground area 9 is formed to be thicker than the side wall corresponding area 11 and the like due to the securing of the slip prevention effect, the embedding of the spike pins 9A, and the like. body)
Has too high rigidity in the circumferential direction and in the width direction, resulting in poor flexibility (fitness to a tire), and may particularly deteriorate the attaching / detaching operation in a cold region.

Therefore, as shown in FIG. 20, a groove 6D extending in the width direction is formed at the mesh branch portion to reduce the rigidity in the circumferential direction, to improve the fit with the tire, and to reduce the mounting work. As a result, the net body 6 can be prevented from coming off due to eccentricity or floating due to centrifugal force during traveling, and the edge of the groove 6D can enhance the anti-slip effect. It is needless to say that the configuration shown in FIGS. 17 to 22 can be applied to the anti-slip device shown in FIGS. 1 to 16. A rope formed by weaving a multifilament yarn or the like is used. The rope is impregnated with a polyester resin solution, and then dried to improve the rigidity or hardness of the rope and to improve the crimping strength of the inner connecting member 16. .

[0070]

As described above, according to the present invention,
Since the work of fastening the net body to the tire can be easily performed, the work of mounting the tire anti-slip device becomes easy.
Also, the first to third hooks of the tightening device do not come off, the slip prevention function during tire running is reliable, and the vehicle body is not damaged.

[Brief description of the drawings]

FIG. 1 is a plan view showing a left half of a tire antiskid device of the present invention in an unfolded state.

FIG. 2 is a plan view showing a right half of the tire anti-skid device of the present invention in an unfolded state.

FIG. 3 is a plan view of a developed state of a net component.

FIG. 4 is an overall side view of an outer side of a tire on which a tire anti-slip device is mounted, and FIG. 4 is an enlarged view of a main part.

FIG. 5 is an overall structural view of an outer tightening cable.

FIG. 6 is an enlarged cross-sectional view of a buckle device for an outer tightening line.

FIG. 7 is a front view of the fastening device in a folded state.

FIG. 8 is a rear view of the fastening device in a folded state.

9A is a rear view of the fastening device in an open state, and FIG. 9B is an enlarged view of a main part.

FIG. 10 is an explanatory front view of the operation procedure of the fastening device.

FIG. 11 is an explanatory bottom view of the operation procedure of the fastening device.

FIGS. 12A and 12B show a third hook body, wherein FIG. 12A is a front view and FIG. 12B is a side view.

FIG. 13 is an overall side view of the inside of the tire on which the tire anti-skid device is mounted and an enlarged view of a main part.

FIG. 14 is an enlarged side sectional view of a connection buckle before connection.

FIG. 15 is an enlarged side sectional view of a connection buckle after connection.

FIG. 16 is a cross-sectional view of an insertion pin for illustrating a variation of a cross-sectional shape of a root portion.

17 shows another useful embodiment of the non-slip device according to the present invention, wherein (1) is a developed view of a net main body, (2) is a perspective view showing a rubber ring as an outer tightening cable, and (3). FIG. 4 is an explanatory view at the time of connection (connection) of the inner tightening cable.

18 is a front view of a tire to which the net main body of FIG. 17 is attached.

FIG. 19 is a front view of an extended state in which the tightening device used in FIGS. 1 and 17 is compared.

FIG. 20 is an enlarged view showing a part of the net main body of FIG. 17;
(1) is a plan view, and (2) is an enlarged sectional view taken along line BB.

FIG. 21 is a perspective view showing the outer coupling tool of FIG. 17;

FIG. 22 is a perspective view showing an example of a tool for tightening the net main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tire non-slip device 2 Tire 3 Net main body 4 Inner tightening cable (cord-like body) 5 Outer tightening cable 15 Hook hook (outer connecting tool) 18 Hook hole (hook portion) 43 Fastening device 44 Device body 45 First hook body 46 second hook body 47 tool engagement part 52 third hook body

Claims (10)

[Claims] An apparatus main body (44) having a tool engaging portion (47), a base end of which is swingably connected to one end of the apparatus main body (44), and a tire anti-slip device (1). ) Hook (45) engaging with the net body (6).
C), a first hook body (45) and a net body (6) in the tire anti-skid device (1), the base end of which is swingably connected to the other end of the device body (44). Hook body (4C) having a hook (46C) engaging with
6), and the first and second hook bodies (45) and (4)
6) is configured to switch between an extended state in which the apparatus body (44) extends outwardly as the apparatus body (44) is turned and a folded state in which the apparatus body (44) is close to one surface of the body (44). In the middle of the device body (44),
A third hook body (5) having a hook (52A) for hooking an outer tie (5) provided along the widthwise outer edge of the net body (3) in the tire slip prevention device (1).
2) A tightening device for use in a tire anti-slip device, the device comprising: 2. A base end of the third hook body (52) has a base end so that the hook (52A) swings in the tire circumferential direction and in and out of the tire with respect to the device body (44). 2. The method of claim 1, wherein
A fastening device for use in preventing tire slip according to the above. 3. The first and second hook members (45) and (46) are pivotally connected at their base ends to diagonal portions of the apparatus body (44). The fastening device according to claim 1, wherein one of the lengths (46) is longer than the other length in the extended state. 4. The first and second hook bodies (45) and (46) are pivotally connected at their base ends to diagonal portions of the apparatus body (44). When (46) is folded into one surface of the apparatus main body (44), stoppers (50) and (51) for maintaining this state are formed so as to protrude at diagonal portions of the apparatus main body (44). A tightening device for use in the tire anti-skid device according to claim 1. 5. The hook (52) of the third hook body (52).
A) according to claim 1 or 2, characterized in that A) is bent at an angle with respect to the tire centripetal line when the hook (52A) is hooked with the outer clamping line (5). Tightening device used for tire slip prevention device. 6. One of the hooks (45C) and (46C) of the first and second hook bodies (45) and (46) is caulked to an outer portion of the net body (3) in the tire antiskid device (1). The tightening device for use in a tire anti-skid device according to claim 1, wherein the other is detachable from an outer portion of the net body (3). 7. One of the hooks (45C) and (46C) of the first and second hook bodies (45) and (46) is caulked to the outer side of the net body (3) in the tire antiskid device (1). The other is detachable from the outside of the net body (3), and the first and second hook bodies (45)
(46) is characterized in that one first hook body (45) crimped to the outside of the net body (3) in the extended state is longer than the other second hook body (46). A tightening device for use in a tire anti-skid device according to claim 1 or 6. 8. A tire anti-skid device comprising a band-shaped and non-metallic net body (3) wound around the outer periphery of a tire (2), wherein the outer edge of the net body (3) in the width direction is a tire. To tighten in the center direction or tire circumferential direction,
Clamping device (43) according to any of the preceding claims.
Is mounted on the widthwise outer edge of the net body (3). 9. A belt-shaped net body (3) in which a plurality of non-metal net components (6) are juxtaposed in the tire circumferential direction.
And an inner tightening cable (4) attached along the widthwise inner edge of the net body (3), and attached to the widthwise outer edge of the net body (3) at a circumferential interval. And a plurality of external connectors (15).
5) Removably hooked to the net body (3)
An outer tightening cable (5) for tightening the outer edge in the width direction of the tire toward the center of the tire. An opening (8) is formed, and both sides of the two net components (6) located on both sides of the opening (8) in the width direction and on the side of the longitudinal opening (8).
The first in the fastening device (43) according to any one of
The two hooks (45) and (46) are locked, and the hook (5) of the third hook (52) in the device (43) is locked.
2A) A tire anti-skid device, wherein the outer tightening cable (5) is locked. 10. The outer coupling (15) located on both sides of the opening (8) has a hook (15A) on which the outer tightening cable (5) is hooked, and is bifurcated from the hook (15A). The pair of leg portions (15B) is configured to have a pair of branched leg portions (15B), and the leg portions (15B) of the pair are caulked to the net body (3) at circumferential intervals. Item 10. A tire anti-slip device according to item 9.