JPH06239117A - Fastening device of non-slip device for tire and its installing method - Google Patents

Abstract

PURPOSE:To operate the tensile force along the axial direction of plural hook metal fittings installed to the width direction ends of a nonskid device for tire, along the full length of a fastening cord body rapidly and evenly, to the fastening cord body used to contract to the center of the tire. CONSTITUTION:This fastening device 1 is composed by providing two cord locking mechanisms 20 which can hold both ends of fastening cord bodies 200 respectively in a device main body 2, and expansion members 50 such as a rubber cord to hook to the hooking metal fittings at adequate positions are connected at both ends of the fastening cord bodies 200 output from the fastening device 1. By the tensile force of the expansion members 50, both ends of the fastening cord bodies 200 are to be drawn out together from the fastening device 1 at the same time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening device used for mounting a tire anti-skid device such as a tire chain on a tire and a method for mounting the device.

[0002]

2. Description of the Related Art There are various types of anti-skid devices for tires in which the main body has a ladder shape or a net shape, and there are various materials such as metal, resin and rubber. To attach these anti-skid devices to a tire, wrap the main body part around the tread surface of the tire, and hang the tightening cord body between the hook metal fittings that are attached at multiple intervals at the widthwise ends. By holding this in a polygonal or circular shape along the side surface of the tire and applying a tensile force in the axial direction to this tightening cord body, each hook fitting can be narrowed toward the center of rotation of the tire. To do.

In order to apply a tensile force to the tightening cord body, a stretchable material such as a rubber cord or a spring wire may be used as a part or the whole of the tightening cord body to utilize the tension of itself. Recently, a tightening device for generating a tensile force is often connected to a tightening cord body separately. This conventional tightening device is provided with, for example, a case and a pulling tool that can be pulled out from the case against the spring force. One end of the tightening cord body is connected to the case to pull the pulling tool. The other end of the tightening cord is connected to and used. If this tightening device is used, a non-stretchable one such as a wire rope can be used as the tightening cord body.

[0004]

In the conventional tightening device, the extension of the expansion and contraction stroke of the spring for pulling and pulling the pulling tool is limited in structure, so that the pulling force acting on the tightening cord body is strengthened. There was a limit to this. Further, in this tightening device, it is usual to fix the position by hooking the case on the hook fitting of the anti-skid device for the tire, and the pulling force is applied unilaterally only on the pulling tool side. Was becoming. Therefore, due to the slip resistance of the tightening cord with respect to the hook metal fitting, it takes a considerable amount of time for the tensile force to reach the entire length (until the wearing condition of the anti-skid device on the tire is naturally corrected by running vibration etc.). In some cases, it is not possible to apply a uniform tensile force over the entire length of the tightening cord body.

The present invention has been made in view of the above circumstances, and is a tightening device for a tire anti-skid device, which is capable of quickly and uniformly applying a tensile force to the tightening string over its entire length. Another object of the present invention is to provide a mounting method that facilitates mounting in this tightening device.

[0006]

In order to achieve the above object, the present invention takes the following technical means. That is, the tightening device of the tire anti-skid device according to the present invention according to claim 1 is a non-stretchable tightening cord body hooked and held along the widthwise end of the tire winding anti-skid device, An apparatus main body in which at least two cord passages are formed, through which both ends of the elastic cord body can be inserted from the inlet to the outlet, and the elastic cord body provided in the apparatus main body moves in the forward direction. Is provided with a cord locking mechanism that allows it but blocks it in the opposite direction, and an axially expandable / contractible elastic member connected to both ends of the tightening cord body. It is characterized in that it is formed so as to form a loop over both ends of the tightening cord body.

As the string locking mechanism, a tongue which is located at a side portion of the string passage and has a swing center disposed closer to the drawing port than the toe is swingably held. A stop claw, a spring for urging the stop claw toward the string passage side, and a lock release mechanism for forcibly swinging the stop claw in a direction against the spring when necessary. It can be provided.

The device body may be provided with hook portions for connecting both longitudinal end portions when the body portion of the tire anti-skid device is connected in a ring shape. In addition, claim 4
The tightening device of the anti-skid device for a tire according to the present invention described in (1), a non-stretchable tightening cord body hooked and held along the widthwise end of the tire winding anti-skid device, and this tightening cord body. An apparatus main body having at least two cord passages through which both end portions can be inserted from the inlet port to the outlet port, and an elastic member capable of expanding and contracting in the axial direction connected to both end portions of the tightening cord body, respectively. The operation piece provided on the main body of the apparatus so as to be reciprocally movable in the tire radial direction, and the posture can be freely changed to a lock posture that prevents movement of the tightening cord body inserted in the cord passage and a lock release posture that allows movement. The operation piece is provided with a hook portion that is detachably hooked to an end portion in the width direction of the tire winding anti-skid device. For the nail tool, the operation piece is The tightening cord body in the cord passage moves in the forward direction while being interlocked with the operation piece so that the posture is changed from the unlocked posture to the locked posture as the tire moves relative to the main body outwardly of the tire diameter. Accordingly, the posture is changed from the locked posture to the unlocked posture.

On the other hand, in the method of mounting the tightening device according to the present invention, the device main body is held at an appropriate position in the width direction end portion of the anti-slip device connected in the form of a ring, and the tightening cord is arranged along the width direction end portion. After the body is hooked and held, at least one hooking portion formed by bending is formed on the elastic member, and the hooking portion is slid so that the tensions generated on the elastic member on both sides of the hooking portion are substantially equal. An elastic member that is engaged at a predetermined position in the widthwise end portion of the stopper device and is stretched on both sides of the hook portion while the tensile force generated in the tightening cord body on both sides of the device body is insufficient. An operation of further increasing the number of hooking portions and making the tension generated in the elastic member on both sides of the increase hooking portions uniform while engaging the increased hooking portions with predetermined positions in the widthwise end portion of the anti-skid device. Is characterized by repeating There.

[0010]

According to the tightening device of the present invention as set forth in claims 1 to 3, the tightening device, which is looped on both sides of the main body of the device, is wound around the tire. After straddling along the widthwise end, extend and retract the stretchable member that is pulled out through both ends of the tightening cord body at both outlet sides of the device body to the appropriate position at the widthwise end of the anti-skid device. Try to hook it up. As a result, an urging force is applied to the elastic member in the direction of contraction along the axial direction, so that both ends of the tightening cord body are pulled by the elastic member so that the cord passages of the apparatus main body are moved in the forward direction (pulling opening From the direction toward the discharge port), that is, a tensile force that pulls both sides of the tightening cord body around the device body as a center. Therefore, the pulling force acting over the entire length of the tightening cord body becomes uniform, and the pulling force acts quickly. The tightening cord body drawn in the string passage in the normal direction is prevented from moving in the direction opposite to the normal direction by the string locking mechanism, so that the tension force once acting is not loosened.

Further, since the elastic member is formed so as to form a loop over both ends of the tightening cord body, the amount of expansion and contraction, that is, the tensile force acting on the tightening cord body can be increased according to the length thereof. When the elastic member is hooked at a plurality of positions on the widthwise end of the anti-skid device, the elastic member also exerts a force for narrowing the widthwise end of the anti-skid device to the tire radial center side. And if the tightening cord is not loose,
As described above, both ends of the tightening cord body are pulled together by the elastic member.

By adopting a structure having a locking claw as a string locking mechanism or providing a hook portion on the main body of the apparatus,
The structure can be simplified and the mounting work can be facilitated. Also,
In the tightening device for a tire anti-skid device according to the present invention as set forth in claim 4, the hook portion of the operation piece is hooked at an appropriate position on the widthwise end of the anti-skid device wound around the tire to tighten the tightening cord body. After straddling the widthwise end of the anti-skid device, the widthwise ends of the anti-skid device are stretched with the elastic members that are pulled out through both ends of the tightening cord on both outlet sides of the device body. When it is hooked at an appropriate position of the part, the both ends of the tightening cord body are pulled by the urging force in the shrinking direction that acts on the elastic member, and a pulling force that pulls both sides of the tightening cord body around the device main body is created. In addition to acting, a force is drawn to the device body in the direction of the tire diameter center.

Then, the pulling force causes the operating piece to move relatively to the outside of the tire diameter with respect to the main body of the apparatus, and the engaging claw tool is forcibly changed from the unlocked attitude to the locked attitude, and the tightening cord body is moved. Will be prevented. If the tightening cord body is loosened due to the slippage of the anti-skid device being displaced with respect to the tire due to running and the tension force does not act on the tightening cord body, the force acting on the device body in the direction of the tire diameter center also disappears, On the other hand, the tensile force acting on the elastic member acts so that both ends of the tightening cord body are attracted to each other as described above. The claw tool is changed to the unlocked position, both ends of the tightening cord are pulled,
The tightening cord is narrowed in the tire radial center direction until a tensile force is applied.

According to the fifth aspect of the mounting method of the present invention, the anti-skid device is wound around the tire, the device main body and the tightening cord body are hooked and held by the tire, and then the elastic member is bent. While forming the hook portion by the above, the both ends of the tightening cord body are pulled out from the apparatus main body by hooking this hook portion on the hook metal fitting at a predetermined position in the anti-skid device. The hook metal fittings are positioned so that the tensions generated in the elastic members are substantially equal on both sides of the hooking portion. As a result, the tensile force acting on both ends of the tightening cord body is also made uniform. This operation may be repeated until the tension of the tightening cord reaches a predetermined value.

Such an operation is carried out by, for example, hooking an intermediate portion in the longitudinal direction of a telescopic member having a loop shape through the apparatus main body to a hook metal fitting farthest from the apparatus main body, and then, this hooking position and the apparatus main body. The middle of the stretched state between and (the part passing near the center of rotation of the tire)
Can be carried out in such a procedure as to be hooked on the hook metal fitting farthest therefrom, which is extremely simple.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. As is clear from the overall view shown in FIG. 1, the tightening device 1 according to the present invention includes a non-stretchable tightening cord body 200 included in a tire anti-skid device and an elastic member 50 that is expandable and contractible in the axial direction. The tightening device 1 holds the tightening cord body 200 at appropriate positions near both ends to form a loop, and the elastic members 5 are attached to both ends of the tightening cord body 200.
0s are connected to each other and are also used as a loop. The tightening cord body 200 is formed of a fiber material such as cotton or hemp, a metal wire (wire), a resin wire or the like, and the elastic member 50 is a rubber cord or the like.

As shown in FIGS. 2 to 4, the tightening device 1 includes:
It is composed of the device body 2 and two string locking mechanisms 20 provided inside the device body 2. The device main body 2 has a structure that can be disassembled into a case body 3 and a lid body 4 that covers the front surface of the case body 3. Inside the case body 3, two parallel holding shafts projecting toward the lid body 4 are provided. 8 are provided. The lid body 4 is positioned with respect to the case body 3 in a fitting relationship with the projecting end portion of the holding shaft 8, and is closed and fixed by a bolt 9. An inlet 5 and an outlet 6 are formed on both side surfaces of the case body 3, and a portion from the inlet 5 to the outlet 6 by making a U-turn along the outer peripheral portion of the holding shaft 8, A string passage is provided for inserting the tightening string body 200. Further, a hook portion 7 is swingably attached to an appropriate position on the outer peripheral portion of the case body 3. As shown in the usage state of the tightening device 1 in FIG. 7 and FIG. 8, the hook portion 7 serves to connect both ends in the longitudinal direction when the main body portion 101 of the tire antiskid device 100 is connected in a ring shape. Used. The device main body 2 is preferably formed of a resin material in order to reduce the weight.

The string locking mechanism 20 unidirectionally urges the locking claw 21 which is swingably fitted around the holding shaft 8 and the swing of the locking claw 21. It includes a spring 26 and an unlocking mechanism 30 that swings the locking claw 21 in a direction against the spring 26 when necessary. The locking claw 21 is shown in FIG.
And as shown in FIG. 6, the through hole 2 fitted into the holding shaft 8.
2 has a semi-cylindrical portion 21a formed at the center and a protruding portion 21b formed toward the opposite side through the through hole 22, and this protruding portion 21b.
The claw 23 is formed on one surface side in the width direction.

The engaging claw 21 has a through hole 22.
A rib 24 in the width direction is provided so as to project about half the circumference of the opening and extend to the portion where the claw 23 is formed. As shown in FIGS. 2 and 4, when the locking claw 21 is fitted to the holding shaft 8, the spring 26 is housed inside the rib 24, and one end of the spring 26 corresponds to the claw 23 of the rib 24. The slit 10 that is applied to a portion and the other end of the slit 26 is formed on the side surface of the case body 3 after the spring force is generated in the spring 26 (see FIG. 3).
It is designed to fit in. Therefore, the locking claw 21
Is attached to the semi-cylindrical portion 21a of the locking claw 21 from the pull-in port 5 of the apparatus main body 2 toward the discharge port 6 toward the discharge port 6 by the spring 26. The portion immediately before is strongly urged so that the claw 23 can be strongly bitten.

The engaging claw 21 has a rib 24 to a claw 2.
A tongue piece 31 is provided so as to project in a direction opposite to the direction of 3. On the other hand, as shown in FIG. 2, one end portion of the device main body 2 is projected outwardly of the case body 3 and held between the locking claws 21 so as to be reciprocally slidable in the tire radial direction. An operation piece 35 is provided. The tongue piece 31 of each locking claw 21 is engaged with the end portion of the operation piece 35 inside the case body 3, and the operation piece 3
The locking claw 21 is interlocked so as to reciprocate with respect to the apparatus main body 2 in the tire radial direction.

These structures have the above-described unlocking mechanism 30.
When the operation piece 35 is pushed in, both locking claws 21 are forcibly swung in a direction against the spring force of the spring 26, and the claw 23 is separated from the tightening cord body 200. As a result, the tightening cord body 200 in the cord passage is in the unlocked posture in which it is allowed to move. Further, normally, the locking claw 21 is swung by the spring force of the spring 26 and the claw 23 is pressed against the tightening cord body 200 to allow the movement of the tightening cord body 200 in the string passage, and the posture is locked. It is considered to be a posture.

Using the tightening device 1 thus constructed,
A situation in which the tire anti-skid device 100 is attached to the tire 300 will be described. As shown in FIG. 7, from the upper side of the tread surface of the tire 300, the main body portion 10 of the antiskid device 100
1, and one of the connecting holes 103 provided at both ends in the longitudinal direction is hooked with one of the hook portions 7 of the tightening device 1. Then, the tightening cord body 200 is hooked on an appropriate number of hook fittings 102 provided at a plurality of intervals on the widthwise end of the main body portion 101 at predetermined intervals. Next, the both ends of the main body 101 are made to be along the tread surface of the tire 300 by slightly backing the automobile, and the other of the hook portions 7 of the tightening device 1 is attached to the rest of the connecting holes 103. Hook to connect both ends. Further, the tightening cord body 200 is hooked on all the remaining hook metal fittings 102.

Next, as shown in FIG. 8, an appropriate number of positions of the elastic member 50 are hooked on the hook fittings 102 of the anti-skid device 100. The procedure at this time is as follows. That is, as shown in FIG. 9 (a), the elastic member 50 having a loop shape via the tightening device 1 (device main body 2) has an intermediate portion in the longitudinal direction, and the hooking portion 50 is formed by bending.
The hook portion 50a is hooked on the hook metal fitting 102 farthest from the tightening device 1 while forming a.
The hook portion 50a is formed in the middle portion in the longitudinal direction of the elastic member 50, and the hook portion 50a is attached to the tightening device 1.
The farthest position from, that is, by hooking on the hook metal fitting 102 on the opposite side on the circumference,
A substantially equal tension is generated in the elastic member 50 that is stretched on both sides of a.

Next, as shown in FIG. 9 (b), the elastic member 50 is further bent at the intermediate portion of the two portions which are stretched between the hooking portion 50a and the tightening device 1. While increasing the hooking portions 50b and 50c, the increasing hooking portions 50b and 50c are hooked on the hook metal fittings 102 at mutually opposite positions. Also in this case, as in the above case, the additional hook portions 50b and 50c are formed in the intermediate portions of the respective stretched portions, and the hook metal fittings 102 are positioned so that the hook positions are opposite to each other. The tension of the elastic member 50 is substantially equal on both sides of the hanging portion 50b and both sides of 50c.

As a result, the elastic member 50 has a square shape as a whole, and an appropriate contraction action is generated in the axial direction, so that both ends of the tightening cord body 200 are moved by the same amount from the tightening device 1. It will be pulled out.
As shown in FIG. 2, in the tightening device 1, the tightening string body 200 in the string passage is in its normal direction (from the draw-in port 5 to the discharge port 6).
In the direction in which the locking claw 21 is moved,
The claw 23 (see FIG. 5) is allowed to swing in the direction in which it is separated from the tightening cord body 200. Therefore, the tightening cord body 20
With respect to 0, both ends via the tightening device 1 are pulled toward the center of the tightening device 1 by the pulling action of both ends of the elastic member 50, whereby a pulling force is quickly and uniformly generated over the entire length. This tensile force can be double or more than the conventional one depending on the length or thickness of the elastic member 50.

However, the tightening cord 2 is moved in the direction opposite to the normal direction.
When 00 is about to move, the locking claw 21 swings in the opposite direction to the above and is caught in the tightening cord body 200 so as to prevent the movement. Therefore, the tension force that once acts on the tightening cord body 200 is not loosened, whereby the tire anti-skid device 100 is firmly attached. Non-slip device 1
When the main body 101 of No. 00 is biased toward the inside of the tire 300, the mounting condition may be loosened by running at high speed, but in this case, the urging force of the expansion / contraction member 50 in the contraction direction may be generated. As a result, the tightening cord body 200 is pulled more strongly, the tensile force acting on the tightening cord body 200 is also increased, the position of the antiskid device 100 is corrected, and the wearing state is stabilized.

The tire anti-skid device 100 is installed in the tire 300.
In order to remove the locking claw 21 from the elastic member, the operation piece 35 of the tightening device 1 can be pushed in to forcefully disengage the locking claw 21 from the tightening string body 200. By removing 50 from each hook fitting 102, the tensile force acting on the tightening cord body 200 can be released.

In the embodiment described above, the hook portion 7
Although the device main body 2 is provided with the hook portion 7, the operation piece 35
Can be integrally formed. Also in the tightening device 1 having such a configuration, the mounting procedure is performed in substantially the same manner as in the above embodiment. That is, the hook portion 7 of the operation piece 35 is attached to the tire 30.
Hook it at a proper position on the widthwise end of the anti-slip device 100 wound around 0, and hang the tightening cord body 200 on the hook metal fitting 102 at the end of the anti-slip device 100 in the width direction. The stretchable member 50, which is pulled out through the both ends of the tightening cord body 200 on the mouth 6 side, is stretched and hooked on the hook metal fitting 102 at an appropriate position of the anti-skid device 100.

Then, both ends of the tightening cord body 200 are pulled by the urging force acting on the elastic member 50 in the contracting direction, and both sides of the tightening cord body 200 are pulled around the apparatus main body 2 as a center. Is applied, a force is drawn to the device body 2 in the tire radial center direction. On the other hand, in the operation piece 35, the hook portion 7 has the non-slip device 100.
Since the operation piece 35 is hooked on the end portion in the width direction of the device, the operation piece 35 tries to move relatively to the outside of the tire diameter with respect to the device body 2.

Therefore, the operation piece 3 is attached to the apparatus main body 2.
5 is moved relatively to the outside of the tire diameter, so that the locking claw 21
Is forcibly changed from the unlocked posture to the locked posture, and the loosening of the tightening cord body 200 is prevented.
In addition, when both ends of the tightening cord body 200 are to be pulled in order to apply a tensile force to the tightening cord body 200, it is possible to prevent the device body 2 from moving in the tire radial center direction by supporting it with a hand or the like. It is possible to prevent the locking claw 21 from changing its posture to the locked posture, and to a certain extent, it is possible to smoothly narrow down the anti-skid device in the tire radial center direction. The device main body 2 is pulled toward the center of the tire diameter by the pulling force of 50, and the posture of the locking claw 21 is forcibly changed to the locked posture.

The anti-skid device 100 is moved to the tire 3 by traveling.
If the tightening cord body 200 is loosened due to displacement with respect to 00, and the tensile force does not act on the tightening cord body 200, the force acting on the device body 2 in the direction of the tire diameter center also disappears, while the expansion and contraction occurs. Since the tensile force acting on the member 50 causes the both ends of the tightening cord body 200 to be drawn to each other as described above, the tightening cord body 200 in the string passage moves in the forward direction and is engaged. The detent tool 21 is changed to the unlocked posture, both ends of the tightening cord body 200 are pulled in, and the tightening cord body 200 is narrowed down in the tire radial center direction until a tensile force acts.

As described above, the hook portion 7 is attached to the operation piece 35.
When the elastic member 50 is formed, the elastic member 50 is formed in a loop shape extending over both ends of the tightening cord body 200 in the above embodiment, but the elastic member 50 can be separately connected to both ends of the tightening cord body 200. Further, the spring 26 is not particularly necessary because the locking claw 21 is forcibly brought into the locked posture by the tensile force of the elastic member 50.

[0033]

Since the tightening device according to the present invention has the above-mentioned structure and includes the two string locking mechanisms, the two members of the tightening string are pulled by the elastic members. The force can be applied, and the tensile force can be increased accordingly. Further, since the tightening cord bodies on both sides of the tightening device are pulled around the tightening device in this manner, the tensile force acting on the tightening string body is distributed quickly and uniformly over the entire length thereof. become. As a result, a reliable mounting state of the anti-skid device for a tire can be obtained.

According to the first to third aspects,
Since the elastic member has a long overall length so as to form a loop over both ends of the elastic cord body, the amount of expansion and contraction can be increased and the tensile force acting on the elastic cord body can be increased. When a structure including a locking claw tool is adopted as the string locking mechanism, the reliability of operation and the simplification of the structure can be achieved.

When the hook is provided on the device body, it can be used both for fixing the position of the device body with respect to the anti-skid device and for connecting both longitudinal end portions when the anti-skid device is formed into a ring shape, thereby facilitating the mounting work. Is planned. In the mounting method according to the present invention as set forth in claim 5, after the device body of the tightening device and the tightening cord body are hooked and held by the anti-skid device wound around the tire, the elastic member is hooked by bending. The hooking part is formed at a predetermined position in the widthwise end of the anti-skid device while the tension of the elastic member is being made uniform while forming the part. Not only the force can be generated, but also the forming position of the hooking portion that governs the equalization of the tension in the elastic member is, for example, the longitudinal intermediate portion in the loop state, the intermediate portion in the stretching portion. As a result, it is possible to find such a tightening device by eye registration.

[Brief description of drawings]

FIG. 1 is an overall view showing a tightening device according to the present invention.

FIG. 2 is an enlarged front cross-sectional view showing a tightening device.

FIG. 3 is a view taken along the line AA of FIG.

FIG. 4 is an enlarged sectional view taken along line BB of FIG.

FIG. 5 is an enlarged front view of the locking claw tool.

6 is a view taken along the line CC of FIG.

FIG. 7 is a perspective view showing a procedure for mounting the tire anti-skid device.

FIG. 8 is a perspective view showing how the tightening device is attached.

FIG. 9 is a diagram illustrating a procedure of a mounting method according to the present invention.

[Explanation of Codes] 1 Tightening device 2 Device body 5 Inlet port 6 Outlet port 7 Hook part 20 String locking mechanism 21 Locking claw tool 26 Spring 30 Unlocking mechanism 50 Stretchable member 50a Hooking part 50b Increase hooking part 50c Increase hook part 100 Anti-skid device for tire 101 Main body part 200 Tightening cord body 300 Tire

Claims (5)

[Claims] 1. A non-stretchable tightening cord body (200) hooked and held along an end portion in the width direction of a tire winding non-slip device (100), and both ends of the tightening cord body (200). An apparatus main body (2) having at least two cord passages which can be respectively inserted from the inlet (5) to the outlet (6), and a tightening cord body (2) provided in the device main body (2) in the cord passage ( 200) allows the cord 200 to move in the forward direction, but prevents the cord 200 from moving in the reverse direction, and an extendable / contractible extension / contraction in the axial direction connected to both ends of the tightening cord body (200). A member (50), the elastic member (50) being formed so as to form a loop over both ends of the tightening string body (200). apparatus. 2. The cord locking mechanism (20) is provided on a side portion of a cord passage so that a tip of the toe is directed toward an outlet (6) and a swing center is closer to the inlet (5) than the tip of the toe. A locking claw (21) arranged and held so as to be swingable, a spring (26) for urging the locking claw (21) so that the toe of the claw is directed toward the string passage side, and is locked when necessary. The tightening mechanism for a tire anti-skid device according to claim 1, further comprising a lock release mechanism (30) for forcibly swinging the claw tool (21) in a direction against the spring (26). apparatus. 3. A hook portion (7) for connecting both longitudinal ends of the device body (2) when the body portion (101) of the tire anti-skid device (100) is annularly connected. The tightening device for a tire anti-skid device according to claim 1 or 2, further comprising: 4. A non-stretchable tightening cord body (200) hooked and held along an end portion in the width direction of a tire winding non-slip device (100), and both ends of the tightening cord body (200). An apparatus main body (2) having at least two cord passages each of which can be inserted from the inlet (5) to the outlet (6), and the axial direction connected to both ends of the tightening cord body (200). A telescopic member (50) capable of expanding and contracting, an operation piece (35) provided in the device body (2) so as to be reciprocally movable in the tire radial direction, and the tightening cord body (200) inserted into the cord passage. And a locking claw tool (21) provided on the apparatus main body (2) so as to be freely changeable between a lock position for preventing movement of the device and a lock release position for allowing movement. Anti-skid device for winding the tire (10
0) is provided with a hook portion (7) which is detachably hooked at the end portion in the width direction, and in the locking claw tool (21), the operation piece (35) is a tire with respect to the device body (2). It is interlocked with the operation piece (35) so as to change its posture from the unlocked posture to the locked posture as it moves outward in the radial direction, and the tightening cord body (2) in the cord passage (2).
00) is configured to change its posture from the locked posture to the unlocked posture as it moves in the forward direction, and a tightening device for a tire anti-slip device. 5. A method of mounting a tire anti-skid device according to any one of claims 1 to 4 in a tightening device, wherein the device body (100) is connected in a ring shape at an appropriate position in the width direction of the anti-skid device (100). 2) is held and after the tightening cord body (200) is hooked and held along the widthwise end portion, at least one hooking portion (50a) is formed on the elastic member (50) by bending. While engaging the hook portion (50a), the hook portion (50a) is engaged at a predetermined position in the widthwise end portion of the anti-skid device (100) so that the tensions generated in the elastic members (50) on both sides of the hook portion (50a) become substantially equal. The elastic members (50) that are stretched on both sides of the hooking portion (50a) while the tensioning force generated in the tightening cord body (200) on both sides of the device body (2) is insufficient. ) To the hook (50
b, 50c), while increasing the tension generated in the elastic member (50) on both sides of the increased hook portions (50b, 50c), the increased hook portions (50b, 5c).
0c) is repeatedly engaged with a predetermined position in the widthwise end of the anti-skid device (100).