JPH06106928A - Tightening tool for tire antislip device - Google Patents

Abstract

PURPOSE:To provide a tightening tool wherein an influence of durable life of constitutional parts given to a work mechanism is decreased to surely actuate it over a long period and also release of action can be facilitated. CONSTITUTION:In a tightening tool 10, a foldback part 23 in one end of a double loop-shaped band 20, constituted of a flexible belt 21 and a rubber cord 22, is linked around a cleat 36 rotatably supported by a supporter 37 capable of rising/falling to a buckle 30, and a foldback part 24 in the other end is stopped to a block 35. The belt 21 of an outside loop of the band 20 can be turned around in a direction A by tension of the diametric expanding direction A, and the belt 21 of an inside loop is brought into press contact with a lock part 36a of the cleat 36 by tension of the direction A and impeded from turning around in the direction A. Consequently, looseness of the belt 21 of the inside loop is absorbed by the rubber cord 22, to properly maintain tightening force. When the inside belt 21 is turned around in the direction A, an unlocking lever 38 is turned to hold the cleat 36 in a protruding/retracting position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener which is attached to a widthwise end portion of a non-slip body of a tire anti-slip device on the outer side of a tire.

[0002]

2. Description of the Related Art As a fastening tool for a tire anti-slip device of this type, a mechanism disclosed in, for example, Japanese Patent Laid-Open No. 63-227410 has been proposed. An example of this tightening tool is that the middle part of the flexible rope is inserted into and retracted from the through hole of the body that pivotally supports the cam cleat, and one end of this rope is connected to the body. The rubber band is formed in a loop shape by connecting both ends of the rope to both ends of the rope, and the cam cleat of the body is formed by a spring biased in one direction of the length of the rope. Is clamped between the inner wall of the through hole and the cam cleat is rotated in the direction opposite to the direction of the biasing force of the spring, whereby the clamped state of the rope is released.

[0003]

The fastener of the above-mentioned tire anti-skid device is such that when the vehicle is traveling, the rope is pulled by the pulling force of the rubber band so that the rope can move only in one direction, and in the opposite direction. Is prevented by the urging force of the spring acting on the cam cleat, the rope has a function of always maintaining a predetermined tension to reliably hold the tire anti-skid device on the outer circumference of the tire.

However, since the cam cleat of this tightening tool utilizes the biasing force of the spring, the operation of the cam cleat is affected by the durability life of the spring, and the operation is uncertain after long-term use. There is a problem that there is no. The present invention solves the above problems and provides a fastener for a tire anti-slip device that ensures reliable operation for a long period of time, with the operating mechanism being hardly affected by the durable life of parts. The purpose is to provide.

[0005]

In order to achieve the above object, the present invention provides a fastening tool which is attached to a tire by being fastened to a widthwise end portion of a non-slip body of a tire anti-slip device which is arranged outside the tire. 2. A band member formed by endlessly binding a flexible stretchable band portion to a flexible non-stretchable band portion is double-folded, and the stretchable band portion is included in an outer loop. Heavy loop-shaped band, and 2
A buckle for locking the folded-back portions at both ends of the heavy loop-shaped band, wherein the buckle has a folded-back portion around at least one end of the double loop-shaped band and is undulated by the tension of the non-extending band portion. A supported cleat, and a band passage in which a non-extending band portion is formed around the cleat in the fall position with a space capable of orbiting,
The cleat is a rhomboid hexahedron, and in the standing position, at least the non-extending band portion of the inner loop is wound around the ridge angle portion and the band passage, and the non-extending band portion is pressed against the cleat so that the inner circumference of the cleat is not increased. In addition to having a lock mechanism that blocks the surroundings, a lock release lever that is attached to the front side of the cleat and that rotates the cleat from the standing position to the fall position is provided.

[0006]

When the non-extending band portion of the inner loop of the double loop band is rotated around the cleat in the radial direction of expansion, the fastener of the present invention rotates the lock release lever to move the cleat to the fall position. Orbit with it held at. When the fastener of the present invention is attached to the anti-slip body of the tire anti-slip device mounted on the tire, the inner loop of the double loop band is hung on the hook fixed in the width direction of the anti-slip body. The inner loop is pulled in the direction of diameter expansion so that the diameter is sufficient to adjust the loop diameter by orbiting the non-extendable band around the cleat, and then the non-extensible band of the inner loop is first slip-resistant. Sequentially hook onto the hooks that are fastened to the widthwise end of the outer loop, pull the outer loop non-stretch band portion in the direction of reducing the inner loop diameter, and then similarly stretch the outer loop non-stretch band portion and stretch band portion. Hang it up.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a tire antiskid device mounted on a tire using the fastener of the present invention. The tire anti-slip device 40 of the figure comprises a so-called net type non-metal anti-slip body 41 and its accessories, and the anti-slip body 41 is made of rubber on a core material such as a tire cord.
A mesh portion 42 which is covered with a synthetic resin or the like and is formed into a mesh structure which is continuous in the longitudinal direction (tire circumferential direction), and joint portions 43 and 4 which are formed linearly in the width direction of both longitudinal ends of the mesh portion 42.
4 and. Bending portions 45 extending outward in the width direction at regular intervals in the longitudinal direction are formed at the widthwise ends of the non-slip body 41, and metal hooks 46 are fastened to each of the bending portions 45 by caulking. I am doing it. Non-slip body 4
A hook is similarly fixed to the bent portion of the widthwise end portion of the tire 1 which is not shown in the drawing, and a non-extendable side rope having loop portions at both ends is crimped. The loop part at one end of the side rope is a non-slip body 41
Is attached to the bent portion of the joint portion of the side via a connecting tool (not shown), and the connecting tool is attached to the loop portion at the other end of the side rope.

The bent portions of the joint portions 43 and 44 arranged on the outer side of the tire of the anti-slip body 41 are joined together by the latches 39 provided on the buckle 30 of the fastener 10 of the present invention. The double loop-shaped band 20 of the fastener 10 is hooked on the hook 46 of each bent portion other than the joint portions 43 and 44. FIG. 2 is an overall view of the fastener 10.

The double looped band 20 of the fastener 10 is
At both ends in the length direction of the non-stretchable band portion 21 having flexibility,
A band member obtained by binding endless band members 22 having flexibility is double-folded so that the non-extension band parts 21 are located on both ends, and the non-extension band part of the folded band member is folded. Only the part 21 constitutes an inner loop, and the extension band part 22 is formed in a double loop shape by abutting the folded-back parts 23 and 24 at both ends so as to be included in a part of the outer loop. As the material of the non-stretch band portion 21, it is preferable to use, for example, a braid that is formed by knitting a yarn of polyester fiber into a belt shape, and the material of the stretch band portion 22 is to use a rubber strap.

As shown in FIG. 3, the buckle 30 for locking the folded-back portions 23 and 24 at both ends of the double loop band 20 is an elongated rectangular parallelepiped box body, which is molded from a synthetic resin such as nylon. A bottom lid (not shown) is connected to the main body 30a with screws. 3 (a) and 3 (b) are back views showing the buckle 30 excluding the bottom cover, and a diamond-shaped hexahedral cleat 36 is provided in a chamber 31a formed on one end side in the longitudinal direction of the buckle 30. The shaft 37 is rotatably supported about a shaft 37 fixed to the central portion. A projecting edge portion 36a is provided at one end of the acute angle of the cleat 36 (FIG. 3 (d)).

A restraint portion 32 for restricting the position of the cleat 36 is provided on the front surface of the chamber 31a of the buckle 30 with a gap between the restraint portion 32 and the wall surface of the chamber 31a, and an inclined surface 32a formed on the rear surface of the restraint portion 32. At a position where the front surface 36c of the cleat 36 comes into close contact with the cleat 36 (falling position), a space (a band passage described later) 33 is formed between the cleat 36 and the wall surface of the chamber 31a. It is possible to take the standing position by rotating it clockwise from the close lying position. On the other end side of the buckle 30 in the longitudinal direction, a block 35 having a clearance around its periphery is provided.

Around the cleat 36 of the buckle 30, the folded portion 23 at one end of the double loop band 20 is rotatably wound around the cleat 36 of the buckle 30 through the opening on one side in the longitudinal direction of the buckle 30 to the block 35 of the buckle. The locking ring formed on the folded portion 24 at the other end of the double loop band 20 is unrotatably locked through the opening on the other side in the longitudinal direction of the buckle 30.

On the surface of the front wall 30b of the buckle 30,
As shown in FIG. 3C, a lock release lever 38 fixed to a shaft 37 of the cleat 36 is attached. The illustrated lock release lever 38 has the same shape as the cleat 36, but other arbitrary shapes may be used. The groove 3 formed on one side of the buckle 30 in the width direction
1b has a hook 39 having a pair of hooks 39a.
Is attached.

In the fastener 10 having the above structure, when the non-extendable band portion 21 of the outer loop of the folded portion 23 of the double loop band 20 is pulled in the band expanding direction A, this force causes the front surface 36c of the cleat 36 to move. Slope 32a of stop 32
The non-extending band portion 21 of the outer loop can circulate (surround) the band passage 33 around the cleat 36 in the radial direction A (see FIG. 3 (a)). )). When the non-stretch band portion 21 of the inner loop is pulled in the radial direction A, this force causes the cleat 36 to move.
Rotates to the upright position, and the projecting edge portion 36a of the cleat 36 presses the non-extending band portion 21 of the inner loop against the wall surface of the band passage 33, so that the cleat 36 orbits (inwardly) around the cleat 36. Not possible (Fig. 3
(B)). In this embodiment, the projection 36a of the cleat 36 is formed.
Although the non-extending band portion 21 of the outer loop is also supplementarily locked by the ridge portion 36b at the symmetrical portion, the lock mechanism by the ridge portion 36b may be omitted.

When the tire anti-slip device 40 is attached to the tire 50 using the above-described fastener 10, the non-extending band portion 21 of the inner loop of the folded portion 23 at one end of the double loop band 20 is cleated in advance. A tightening tool 10 that is adjusted to have an inner loop diameter larger than an outer loop diameter by being wrapped around 36 is prepared. In this case, in order to pull the non-extensible band portion 21a of the inner loop in the radial direction, the lock release lever 38 attached to the buckle 30 is rotated in the arrow direction B shown in FIG. 3C to lock the cleat 36. Hold in release position.

Antiskid body 4 of tire antiskid device 40
1 on the outer periphery of the tire 50, and the hook 46 of the non-slip body 41 arranged on the outer side of the tire 50 is fitted with 2 of the fastener 10.
Non-extending band portion 2 of the inner loop of the heavy loop-shaped band 20
1 and pulls the non-stretching band portion 21 of the outer loop in the direction of decreasing the inner loop diameter, and the tire slip prevention device 4
Temporarily hook 0 on the tire 50. Next, when the tire 50 is rotated about 1/4, the fastener 10 is removed,
Anti-slip body 4 arranged adjacent to the outside of the tire 50
The fastener 10 is provided in the locking hole of the bent portion of the joint portion 43, 44 of the first embodiment.
The hook portions 39a of the hook 39 of the buckle 30 are hooked to join the joint portions 43 and 44.

Here, once again, the inner loop diameter of the double loop-shaped band 20 of the tightening tool 10 is adjusted to be larger than the outer loop diameter, and the anti-slip body 41 hooks 46 annularly arranged outside the tire 50. After the non-stretching band portion 21 of the inner loop of the double-loop-shaped band 20 of the fastener 10 is hooked on the non-stretching band portion 21 of the outer loop, the non-stretching band portion 21 of the outer loop is pulled in the direction of reducing the inner loop diameter to unstretch the outer loop. The band part 21 and the extension band part 22 are hooked.

As a result, the cleat 36 of the buckle 30 of the tightening tool 10 is in the lying position in close contact with the stopper 32,
The non-stretch band portion 21 of the double loop band 20 applies a predetermined tightening force to the anti-slip body 4 mounted on the tire 50.
Given to 1. When the non-extending band portion 21 of the inner loop of the double loop-shaped band 20 of the fastener 10 attached to the tire anti-skid device 40 receives a force in the radial expansion direction A while the vehicle is traveling, the cleat. 36 is the standing position,
Since the projecting edge portion 36 a and the ridge portion b act as a lock portion that presses the non-extending band portion 21 against the wall surface of the band passage 33, the non-extending band portion 21 cannot go around the cleat 36. Therefore, the inner loop maintains the tightening force applied to the anti-slip body 41 without expanding its diameter.

When the diameter of the inner loop of the double loop band 20 of the fastener 10 attached to the tire anti-slip device 40 is excessive and loose, the non-extensible band portion 21 of the outer loop is Since the force in the radial expansion direction A due to the tensile force of the extension band portion 22 acts on the cleat 36, the non-extension band portion 21 surrounds the cleat 36 and the diameter of the outer loop increases. , The diameter of the inner loop is relatively reduced. As a result, the non-stretchable band portion 21 of the inner loop applies a predetermined tightening force to the anti-slip body 41.

Therefore, even when a situation occurs in which the tightening force of the tightening tool 10 applied to the anti-slip body 41 is loosened while the vehicle is traveling, the outside of the double loop-shaped band 20. Since the extension band portion 22 of the loop absorbs the looseness and adjusts the tightening force of the non-extension band portion 21 to have an appropriate strength, it is not necessary to perform additional tightening, and the tightening tool for the tire antiskid device 40 is not required. After installing 10, there is no need to inspect the quality of the tightened state, the presence or absence of loosening, and the like.

Since the cleat 36 of the tightening tool 10 is rotatably supported about the shaft 37 as a fulcrum, when the cleat 36 is rotated by the tension of the double-loop-shaped band 20 to each of the lying and standing positions. A responsive operation is guaranteed. Further, even when the vehicle travels at a high speed, the non-stretch band portion 21 of the double loop band 20 of the fastener 10 can provide a necessary tightening force, so that the anti-slip body 41 of the tire anti-skid device 40 can be provided. Further, the centrifugal force generated by the high speed rotation of the tire 50 is completely suppressed from spreading outward in the radial direction of the tire 50, and the performance of the tire antiskid device 40 is not impaired.

When the fastener 10 attached to the tire anti-slip device 40 is removed, the non-extensible band portion 21 of the outer loop of the double loop band 20 hooked on the hook 46 of the anti-slip body 41 is extended. After the band portion 22 and the band portion 22 are hung from the hook 46 against the restoring force of the extension band portion 22, the lock release lever 38 is turned to rotate the cleat 3.
6 is held in the lying position, the lock mechanism for the non-extending band portion 21 is released, and the non-extending band portion 21 of the inner loop is released.
The inner circumference of the cleat 36 to expand the diameter of the cleat 36 so that the non-stretchable band portion 21 of the inner loop can be easily hooked to the hook 4.
You can hang it from 6.

When the fastener 10 is attached to the antiskid body 41 of the tire antiskid device 40 mounted on the tire 50, the extension band portion 22 of the outer loop of the double loop band 20 has a long length, The workability is improved as the extension rate when hooked on the hook 46 of the anti-slip body 41 arranged in an annular shape on the outer side of the outer loop is increased. The diameter of the inner loop cannot be made sufficiently large at the time of attachment, and there is a possibility that it cannot be hooked on the hook 46 of the anti-slip body 41. Further, if the extension rate of the extension band portion 22 of the outer loop is too low, the non-extension band portion 21 of the inner loop may have insufficient tightening force for always maintaining a predetermined tension. On the contrary, if the extension rate of the extension band portion 22 of the outer loop is too high, the workability of attaching and detaching is deteriorated.

Therefore, in the fastener 10 of the present invention, the extension rate of the extension band portion 22 of the outer loop when mounted is 15 to 60%, preferably 25 to 50%, and the extension band portion with respect to the circumference of the outer loop. The ratio of the length of 22 is 50 to
It is good to set it to 85%, preferably 60 to 75%.
The buckle 30 of the tightening tool 10 of the above-described embodiment is a hook 39.
As described above, the hook 39
May be attached to the bent portion on the outer side of the tire of either one of the joint portions 43 and 44 of the non-slip body 41.
When the buckle 30 in which the latch 39 is omitted is used as described above, the joint portions 43 and 44 are joined by the latch on the tire front side of the anti-slip body 41 mounted on the tire 50, and then the buckle of the fastener 10 is joined. The double loop-shaped band 20 is hooked in the state in which 30 is arranged at an arbitrary position between the hooks 46 of the anti-slip body 41.

The fastener 10 of the present invention has the folded portion 2 at one end of the double loop band 20 as in the above embodiment.
Not only when the cleat 36 is hung around the cleat 36 of the buckle 30, but also the cleat is axially supported at both longitudinal ends of the buckle 30, and the double loop band 2 is attached to the pair of cleat.
The folded-back portions 23 and 24 at both ends of 0 may be configured so as to be able to go around.

[0026]

As described above, according to the fastener of the present invention, the band member including the flexible non-extending band portion and the stretching band portion is folded so that the stretching band portion is included in the outer loop. To form a double loop-shaped band, and at least one end of the double loop-shaped band is folded back,
The cleat's lock, which is hung around the cleat that is supported so that it can be laid down in the buckle and is in the standing position due to the tension of the non-stretching band of the double loop band, causes the non-stretching band to pass through the buckle band passage. Since a lock mechanism that presses against the wall surface of the tire is provided, the non-stretch band portion of the outer loop of the double loop-shaped band will move around the cleat only in the radial direction when the fastener is attached to the tire anti-skid device. It circulates and is prevented from circling in the opposite direction, the extension band absorbs the looseness of the double loop band, and the non-extension band gives a predetermined tightening force to the anti-skid body of the tire anti-skid device. As a result, the function of preventing the tire from spreading outward in the radial direction is reliably performed.

Further, since the fastener of the present invention is provided with the lock release lever for rotating the cleat in the standing position and holding it in the fall position, the lock mechanism for the non-extensible band portion of the double loop band can be easily provided. In addition, it can be reliably released, and the operation of removing the fastener attached to the anti-slip body can be performed simply and quickly. In addition, according to the present invention, unlike the parts that constitute the fastening tool, which may be damaged or have a limited service life, they are composed of only durable parts that do not have moving parts themselves. The extremely simple locking and unlocking mechanism saves the trouble of maintenance and inspection and parts replacement.
It is possible to obtain a fastener that exhibits a highly reliable function over a long period of time.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which the fastener of the present invention is attached to a tire slip prevention device.

FIG. 2 is a front view showing an embodiment of the fastening tool of the present invention.

3 is a rear view of the cleat of FIG. 2 in a folded position (a) and a standing position (b) of the cleat, a front view showing an operating state of a lock release lever (c), and a perspective view of the cleat (d). .

[Explanation of symbols]

 10 Fastening Tool 20 Double Loop Band 21 Non-Extensible Band Part 22 Extendable Band Part 23, 24 Folding Part 30 Buckle 32 Stop Part 33 Band Passage 36 Cleat 36a Lock Part 38 Lock Release Lever 40 Tire Slip Device 41 Non-slip Main Body 50 tires

Claims (1)

[Claims] 1. A tightening tool which is attached to a tire by being hung on a widthwise end of a non-slip body of a tire anti-skid device, the end being provided outside the tire. A double loop-shaped band formed by folding the band member formed by endlessly binding the stretched band portion having the double looped loop member and including the stretched band portion in the outer loop; A buckle for locking the folded-back portion, wherein the buckle has a cleat in which a folded-back portion of at least one end of a double loop-shaped band is wound, and which is rotatably supported by tension of a non-extending band portion; And a band passage in which a non-extending band portion is formed around the cleat in a position with a space capable of orbiting, and the cleat is a rhomboid hexahedron and has at least an inner side groove in the standing position. There is a lock mechanism that presses the non-extending band part between the ridge angle part around which the non-extending band part is wound and the band passage to block the inner circumference around the cleat, and on the front side of the cleat. A fastener for a tire anti-skid device, comprising a lock release lever attached to rotate a cleat from a standing position to a fall position.