JPH05319044A - Fastening device of tire non-slip device - Google Patents

Abstract

PURPOSE:To provide a fastening device which can operate securely for a long period without receiving an influence owing to the endurable life of the component parts. CONSTITUTION:This fastening device 10 has a band 20 made by forming a flexible belt 21 and a rubber cord 22 in a double loop form, and a buckle 30 to lock turning parts 23 and 24 at both ends of the bands 20. And the turning parts 23 and 24 of the band 20 are engaged rotatable in the pins 35 and 36 which are held slidable in the slits 33 and 34 of the buckle 30, and a locking mechanism to superpose the belts 21 of both the outer and the inner loops, and pressure-contacting them to the stoppers 37 and 38 of the buckle 30 is provided. When this fastening device 10 is installed to a tire non-slip device, the belt 21 of the outer loop of the band 20 can rotate around the pins 35 and 36 in the expansion direction A of the band 20, but the rotation in the reverse direction is prevented, and thereby, the rubber cord 22 absorbs the looseness of the inner loop, and the fastening force of the belt 21 is maintained.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art As a fastening tool for this type of tire anti-skid device, for example, a mechanism having a mechanism disclosed in 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 into a loop by connecting both ends of the rope to the end of the rope, and the cam cleat of the body is a rope that is 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 walking, 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 fastener 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 when used for a long time. There is a problem that there is no. The present invention solves the above problems and provides a fastener for a tire anti-skid device, which 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 attached to a widthwise end portion of the antiskid body of a tire antiskid device which is arranged on the outer side of the tire. 2. A band member formed by endlessly binding a flexible extension band portion to a flexible non-extension band portion is doubly folded, and the extension band portion is included in the outer loop. Heavy loop-shaped band, and 2
A buckle for locking the folded-back portions of both ends of the heavy loop-shaped band, wherein the buckle slidably supports the pin around which the folded-back portion of at least one end of the double loop-shaped band is wound. And a stopper to which the non-stretch band portions of both the inner and outer loops are overlapped and pressed against each other via a pin that slides in the long hole by the tension of the non-stretch band portion of the inner loop of the double loop band. However, the non-stretch band portion of the outer loop forms a locking mechanism that circulates around the pin only in the radial direction and prevents the gyration in the opposite direction.

[0006]

When the fastener of the present invention is not attached to the tire anti-skid device, the pin in the oblong hole of the buckle is slid in the anti-radiation direction of the double loop band, or both inside and outside of the folded portion. If the non-stretching band portions of the loops are not pressed against the stopper in a superposed state, the non-stretching band portions of the inner and outer loops can be wound around the pin in any direction.

When the fastener of the present invention is attached to the anti-slip body of the tire anti-skid device mounted on the tire, the outer loop and the inner loop of the double loop-shaped band have substantially the same diameter. After adjusting the loop diameter of either the inner or outer loop, first hook the non-stretch band of the inner loop onto the hooks that are fastened to the widthwise ends of the main body, then the non-stretch band of the outer loop. And the extension band are similarly hooked.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a tire anti-skid device mounted on a tire using the fastener of the present invention. The tire anti-slip device 40 of the same figure comprises a so-called net type non-metallic anti-slip body 41 and its accessory parts. The anti-slip body 41 covers a core material such as a tire cord with rubber, synthetic resin or the like. And a mesh portion 42 formed into a mesh structure continuous in the longitudinal direction (tire circumferential direction), and the mesh portion 42.
Joint part 4 formed linearly in the width direction at both longitudinal ends
3, 44 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 the respective bending portions 45 by caulking. Then, one joint part 44
A hook 47 is attached to the bent portion 45 of the. Similarly, a hook is similarly fastened to a bent portion of the width direction end of the non-slip body 41 on the inner side of the tire, and a non-extendable side rope having loop portions on both sides is caulked. The loop portion at one end is attached to the bent portion of the joint portion via a connector (not shown).

The non-slip body 41 covering the outer periphery of the tire 50 has the fastening tool 10 of the present invention fastened to the hook 46 at the end in the width direction arranged outside the tire. The fastener 10 includes a double loop-shaped band 20 and a buckle 30 to which the double loop-shaped band 20 is locked. 2 to 4 show an embodiment of the fastener 10.

The double looped band 20 of the fastener 10 is
As shown in FIG. 2, a band member obtained by endlessly binding flexible stretch band portions 22 to both ends in the length direction of the flexible non-stretch band portion 21 is used as the non-stretch band portion 2.
1 so as to be located at both ends, and only the non-extending band portion 21 of the folded band member constitutes an inner loop, and the extending band portion 22 is included in a part of the outer loop. The folded portions 23 and 24 are joined together to form a double loop. As the material of the non-stretch band portion 21, for example, a braid formed by knitting a polyester fiber thread into a belt shape is used.
It is preferable to use a rubber cord as the material.

As shown in FIG. 3, the buckle 30 for locking the folded-back portions 23 and 24 at both ends of the double loop-shaped band 20 has one side surface along the longitudinal direction and both end corner portions adjacent thereto. A side surface is open, and the other side surface along the longitudinal direction is a closed hollow rectangular parallelepiped box body, which is composed of a main body 30a and a lid 30b which are made of synthetic resin such as nylon, and is not shown. It is connected by screws.

On the upper surface and the lower surface of the buckle 30, two long holes 3 having the same shape and having a long axis on the same line in the longitudinal direction are formed.
3, 34 are arranged on both end sides in the longitudinal direction and provided at the same position on the upper and lower surfaces. Pins 35 and 36 are supported so as to be slidable in the long axis direction of the long holes 33 and 34. The folded-back portions 23 and 24 at both ends of the double loop-shaped band 20 are rotatably wound around the pins 35 and 36 as shown in FIG.

Further, between the upper and lower surfaces of both ends of the buckle 30 in the longitudinal direction, the length between the apex on the outer side in the longitudinal direction of the elongated holes 33 and 34 and the end surfaces on both sides has a diameter that is convex toward the open surface side. Stoppers 37 and 38 formed on the cylindrical surface are provided.
In the fastener 10 having the above-described structure, the pins 35 and 36 supporting the folded portions 23 and 24 of the double loop band 20 are elongated holes by the force of pulling the non-extensible band portion 21 of the inner loop in the band expanding direction A. When it is slid to the outer ends of the longitudinal direction 33, 34, the non-extending band portion 21 of the outer loop of the folding portions 23, 24 is superposed on the non-extending band portion 21 of the inner loop, and the pins 35, 36 are formed. It is pressed against the stoppers 37, 38 via the. In this state, even if a force in the radial expansion direction A acts on the non-stretch band portion 21 of the inner loop,
Since the lock mechanism that holds the non-extendable band portion 21 of the outer loop between the stoppers 37 and 38 via the pins 35 and 36 acts, it wraps around the pins 35 and 36 (inner circumference).
Can not do it. On the other hand, when a force in the radial direction A acts on the non-extendable band portion 21 of the outer loop in this state, the lock mechanism does not act, so that the pins 35 and 36 can be orbited (outward).

The fastener 10 is attached to the tire slip prevention device 4
Before attaching to 0, the long hole 3 of the buckle 30
The pins 35, 36 that slide 3, 34 are located on the inner side in the major axis direction (the direction opposite to the radial expansion direction A of the double loop band 20), or at the folded portions 23, 24 of the double loop band 20. Each of the inner and outer non-stretch band portions 21
Stopper 3 with pins 35 and 36 in the state of overlapping
If the non-stretchable band portions 21 on the inner and outer sides are not pressed against 7, 38, the non-stretchable band portions 21 on the inner and outer sides can be wound around the pins 35, 36 in any direction.

When the tire anti-slip device 40 is attached to the tire 50 using the above-described fastener 10, the outer loop and the inner loop of at least one of the folded portions 23 and 24 at both ends of the double loop band 20 are previously prepared. The non-stretchable band portion 21 on either side of and is wound around at least one of the pins 35 and 36 to prepare the tightening tool 10 adjusted so that the loop diameters are substantially the same.

Next, the non-slip body 41 of the tire non-slip device 40 is put on the outer periphery of the tire 50, both ends of the side ropes of the non-slip body 41 arranged inside the tire 50 are bound, and then the outside of the tire 50. The latching member 47 of one joint portion 44 of the anti-slip body 41 arranged at is coupled to the other joint portion 43. In this way, the hooks 4 of the anti-slip body 41 arranged in an annular shape on the outside of the tire 50.
The non-extending band portion 21 of the inner loop of the double loop band 20 of the fastening tool 10 is hooked on the hook portion 6 and the hook portion of the hooking device 47, and subsequently, the non-extending band portion 21 of the outer loop. The extension band portion 22 is hooked. As a result, the pins 35 and 36 of the buckle 30 of the tightening tool 10 slide to the outer ends of the elongated holes 33 and 34 in the long axis direction, and the predetermined tightening force by the non-extendable band portion 21 of the double loop band 20 is applied. , The non-slip body 41 mounted on the tire 50.

The tire anti-skid device 40 is used while the vehicle is running.
Double loop-shaped band 20 of the fastener 10 attached to the
When the non-stretching band portion 21 of the inner loop of the outer loop receives a force in the radial direction A, the non-stretching band portion 21 of the outer loop
Is pressed against the non-extending band portion 21 of the inner loop while being sandwiched between the stoppers 37 and 38 via the pins 35 and 36.
You can't orbit around 5,36. For this reason,
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 a force in the radial direction A due to the tensile force of the extension band portion 22 is received, the pressure contact force by the non-extension band portion 21 of the inner loop, the pins 35 and 36, and the stopper 3 are provided.
Pins 35, 3 overcome the clamping force between 7 and 38.
6, the diameter of the outer loop is enlarged and the diameter of the inner loop is relatively reduced, and the non-stretch 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 running, 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 be an appropriate strength, it is not necessary to perform additional tightening, and the tire anti-skid device 40 is tightened. After installing 10, there is no need to inspect the quality of the tightened state, the presence or absence of loosening, and the like.

Further, even if the vehicle runs at high speed, the fastener 1
Since the necessary tightening force is obtained by the non-stretching band portion 21 of the double loop-shaped band 20 of 0, the tire slip prevention device 4
The anti-skid body 41 of 0 completely suppresses the radial outward expansion of the tire 50 due to the centrifugal force generated by the high speed rotation of the tire 50, and does not impair the performance of the tire anti-skid device 40. ..

When the fastener 10 attached to the tire anti-slip device 40 is removed, the non-extending 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. The band portion 22 and the non-extension band portion 21 of the inner loop are hung from the hook 46 against the restoring force of the extension band portion 22, and then the non-extension band portion 21 of the inner loop is pin 3
The non-stretchable band portion 21 of the inner loop can be easily hung from the hook 46 by wrapping around at least one of 5, 5 and expanding the diameter.

5 and 6 show a fastener 10 of the present invention.
It is another example of. Buckle 3 of this embodiment
In 0, the long axes of the long holes 33 and 34 are arranged in parallel with the width direction of the buckle 30, and the stoppers 37 and 38 are the buckles 3.
It is formed on the open side surface along the longitudinal direction of 0. The configuration other than the above is the same as that of the embodiment of FIGS.
Since the structure of the double loop-shaped band 20 and the lock mechanism thereof are not changed, the same parts are denoted by the same reference numerals and detailed description thereof will be omitted.

7 and 8 show a fastener 10 of the present invention.
It is yet another embodiment of the. In this example,
An elongated hole 33 for supporting a pin 35 and a stopper 37 are provided on one end side of the buckle 30 in the longitudinal direction, and a block 3 is provided on the other end side with a gap having a part of the side surface opened.
9 is provided in the corner.

The double loop-shaped band 20 has a folded-back portion 23 at one end which is rotatably locked by a pin 35 of the buckle 30, and a folded-back portion 24 at the other end which is formed by crimping a lock fitting 25 to form a locking ring. , This locking ring is the block 3 of the buckle 30
It is hung on 9 so that it cannot go around. Since the configuration other than the above is the same as that of the embodiment shown in FIGS. 3 and 4, the same reference numerals are allotted to the same portions, and detailed description thereof will be omitted.

Double loop band 2 in this embodiment
The lock mechanism for 0 is the same as that of the above-mentioned embodiment except that it operates only on one side of the buckle 30, and the description thereof will be omitted.

[0026]

As described above, in 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 fold at least one end of the double loop-shaped band around a pin that is slidable in the long hole of the buckle so that it can be wrapped around a stopper provided on the buckle. A lock mechanism is provided to press the non-stretching band portions of the inner and outer loops of the double loop band through a pin that slides in the hole. Therefore, when a fastening tool is attached to the tire anti-slip device, the double loop The non-stretch band portion of the outer loop of the elastic band circulates around the pin only in the radial expansion direction, and the circulation in the opposite direction is blocked, and the elastic band portion absorbs the looseness of the double loop band. And a function of inextensible band portion to prevent spread of the radially outer side giving fastening pressure to slip body of the tire antiskid apparatus can be reliably fulfilled.

Furthermore, according to the present invention, there is a possibility that the parts constituting the fastening tool may be damaged, and those having a limited service life are different, and only the parts having no moving parts and having excellent durability are used. By adopting a very simple lock mechanism configured, it is possible to save the trouble of maintenance and inspection and parts replacement, and obtain a fastener that exhibits a highly reliable function for 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 front view a and a side view b showing the buckle of the fastener shown in FIG.

FIG. 4 is a front view showing a locked state of the buckle and the double loop-shaped band of FIG. 3 with the lid of the buckle removed.

FIG. 5 is a front view a and a side view b of a buckle according to another embodiment of the fastener of the present invention.

FIG. 6 is a front view showing a locked state of the buckle and the double loop-shaped band of FIG. 5 with the lid of the buckle removed.

FIG. 7 is a front view a and a side view of a buckle according to still another embodiment of the fastening tool of the present invention.

FIG. 8 is a front view showing a locked state of the buckle and the double loop-shaped band of FIG. 7 with the lid of the buckle removed.

[Explanation of Codes] 10 Tightening Tool 20 Double Loop Band 21 Non-Expanding Band Part 22 Extending Band Part 23, 24 Folding Part 30 Buckle 33, 34 Elongated Hole 35, 36 Pin 37, 38 Stopper 40 Tire Anti-Slip Device 41 Non-slip body 50 tires

Claims (1)

[Claims] 1. A tightening tool which is attached to a tire by being fastened to a widthwise end of a non-slip body of a tire anti-skid device, the end being provided outside the tire. A band member formed by endlessly binding an extension band portion having a double loop-shaped band formed by including the extension band portion in an outer loop, and a double loop-shaped band of both ends of the double loop-shaped band. A buckle for locking the folded-back portion, wherein the buckle has a pin around which the folded-back portion of at least one end of the double loop-shaped band is wound around;
The non-extendable band portions of both inner and outer loops are overlapped with each other through the elongated hole that slidably supports the pin and the pin that slides the elongated hole by the tension of the non-extensible band portion of the inner loop of the double loop band. Has a stopper to be pressed against,
The non-stretch band portion of the outer loop is capable of orbiting around the pin in the radial expansion direction, and a tightening mechanism for the tire anti-skid device characterized by constituting a locking mechanism for preventing the orbit in the opposite direction. Attachment.