JPH0773967B2 - Tightening device for anti-skid device for tire - Google Patents

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 when a tire anti-skid device such as a tire chain is attached to a tire.

[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.

By the way, the present inventors have previously developed a tightening device 400 shown in FIGS. 11 and 12 in order to apply a strong tensile force to the above-mentioned tightening string body. Patent application (Japanese Patent Application No. 3-316834)
issue). This prior application tightening device 400 includes a device body 401,
A clamp piece 402 is provided so as to be swingable outward from the inside of the apparatus main body 401 around a circular boss 403.
It consists of and. In the center of the circular boss 403, as shown in FIG.
A rectangular opening 406 that can be engaged with the flat tip portion 81 of the lever tool 80 shown in FIG. The clamp piece 402 has a suitable position on one end side of the tightening cord body 200 that is folded back, and the other end of the tightening cord body 200 is connected to the apparatus body 401. 404 is
405 is a lock pin for holding the state in which the clamp piece 402 is inserted in the device main body 401.
When the main body of the anti-skid device for a tire is wound around a tire, it is a hook portion used for connecting both ends thereof.

This prior application tightening device 400 comprises a device body 40.
While keeping the clamp piece 402 out of the position 1, the tightening string body 200 is hooked on the hook metal fitting 102 of the tire anti-skid device to adjust the length of the clamp piece 402, and then the lever tool 80 is attached to the circular boss 403. Are engaged, and the lever tool 80 is rocked so that the clamp piece 402 enters the apparatus main body 401. As a result, the tension cord body 200 is prevented from being displaced with respect to the clamp piece 402, and a tensile force is applied in the axial direction thereof. Then, while maintaining the state in which the lever tool 80 is rocked, the lock pin 404 is rocked to fix the clamp piece 402, and then the lever tool 80 is removed.

[0005]

When the main body of the anti-skid device for a tire is wound around the tread surface of the tire when the positioning in the width direction is biased inward, or before the clamp piece 402 is swung. If the adjustment of the length of the tightening cord body 200 is insufficient, even if the lever tool 80 is oscillated about once, it is impossible to apply a sufficient tensile force to the tightening cord body 200. was there. In this case, the lever tool 80 is oscillated in the direction opposite to the above to bring the clamp piece 402 out of the apparatus body 401 once, and the length of the tightening cord body 200 with respect to the clamp piece 402 is adjusted again. , The clamp piece 40 again
The operation of swinging the lever tool 80 in the direction in which the device 2 enters the apparatus main body 401 had to be repeated as necessary. As described above, in the tightening device 400 of the prior application, in order to adjust the pulling force of the tightening string body 200, it is necessary to perform the operation by reversing the swing direction of the lever tool 80 every time. There was a slight difficulty in that the operation became troublesome.

The present invention has been made in view of the above circumstances, and in applying a strong tensile force to the tightening cord body, the tightening device of the anti-skid device for a tire can be easily performed. The purpose is to provide.

[0007]

In order to achieve the above object, the present invention takes the following technical means. That is, according to the present invention, a device main body in which an inner plate and an outer plate are held in parallel with each other at a predetermined distance, and an inner and outer plates of the device body are provided with a reverse rotation prevention mechanism that can be released when necessary. For a tire comprising a reel barrel rotatably held by
In twistlock of anti-slipping Me apparatus, cylinder outer of the reel drum
Integral with the reel cylinder in parallel with the peripheral surface with a predetermined gap
With a string hook shaft that is specially installed,
The middle part of the tightening cord that has become an endless loop is
It is hung in a folded shape on the string hook shaft, and this tightening string body
One folded part is wound around the outer peripheral surface of the reel body.
And the other folded-back portion on the radial outside of this one folded-back portion
Is characterized by being wound in a polymer form .

The present invention also provides an anti-skid device for a tire.
In the tightening device of the
The hook part that is hooked to the main body of the
The reel barrel extends outward from the center of the reel barrel.
An engaging portion with which the lever lever tool is engaged is formed,
Tighten the reel barrel to the lever tool engaged with the engaging part
When the operating force to rotate is applied,
The direction of the moment around the hook is opposite to the
Of the tightening cord on the side where the tensile force that causes
The diameter of the folded part is the diameter of the other folded part wound around the body
It is characterized in that it is wound on the outside in a polymerized manner.

Further, in the present invention, the inner plate and the outer plate are mutually
And the device body, which is held in parallel at a predetermined interval.
Between the inner and outer plates of the device body can be released when necessary
Reel barrel held rotatably through a simple reverse rotation prevention mechanism
And both ends of the anti-skid device for tires
The other end of the tightening cord has a tag connected to the main body of the device.
In the tightening device of the anti-skid device for an ear ,
The reel cylinder is parallel to the outer peripheral surface of the reel unit with a predetermined gap.
Is equipped with a string locking shaft, and the string locking shaft is tightened.
The part near the one end of the tightening cord is folded back and folded back
It is hung so that it can be freely adjusted, and both sides of this tightening cord are folded back.
Of the parts, the folded part on the one end side is outside the body of the reel barrel
It is wound around the peripheral surface, and the other fold is
The twisted part is wound in a polymer form, and one end of the tightening cord body is
The part is pulled out of the device body
It is set to.

Further, according to the present invention, in the tightening device of the anti- skid device for a tire , one end portion of the tightening cord body has an axial direction thereof.
An elastic member that can expand and contract along the direction
Is connected to the hook device of the tire anti-skid device via
It is characterized by that. The reverse rotation prevention mechanism is
Lock piece held close to or away from the roll barrel
And, this lock piece is constantly pressed and urged toward the reel barrel.
The spring and the widthwise end of the reel barrel to the lock piece
And mesh in only one direction of rotation, and idle in the opposite direction.
And ratchet teeth formed as
Release the bias of the lock piece from the outside of the main unit.
Can be formed with an operating part for
It Here, the lock piece is tangential to the outer circumference of the reel barrel.
The position can be freely changed and the device can be connected to the device body.

[0011]

According to the present invention, by rotating the reel cylinder in the main body of the apparatus in one direction, the winding length of the tightening cord body wound on the outer peripheral surface thereof can be gradually lengthened. . That is, in order to increase the tensile force acting on the tightening cord body, it is sufficient to gradually increase the degree of rotation of the reel cylinder in one direction. Then, once the reel cylinder is rotated in this way, the state is automatically held by the reverse rotation preventing mechanism so as not to return to the original state. Therefore, in the prior application tightening device, it is possible to save the trouble of repeatedly swinging the lever tool so that the clamp piece moves in and out of the main body of the device, and the trouble of operating and swinging the lock pin.

In the case where the tightening cord body having both ends is used, one end portion of the tightening cord body is hooked in a folded manner with respect to the cord locking shaft of the reel barrel, and the other end portion is connected to the apparatus main body. To do so. On the other hand, when an endless loop-shaped string is used as the tightening cord body, it suffices to hang it at a suitable position in the middle thereof in a folded manner on the string locking shaft of the reel barrel. When the endless loop-shaped tightening cord body is used, the tightening cord body can be pulled up on both sides of the reel body around the center of the reel body. The effect is obtained.

When the ratchet mechanism is adopted as the reverse rotation preventing mechanism, it is convenient for simplification of the structure, reliability of operation, and cost reduction. In the case where the elastic cord is provided with the elastic member, the elastic member expands and a tensile force acts as the winding length of the elastic cord increases, so that the elastic member continuously applies the elastic cord. It is pulled in the tightening direction. Therefore, when the body portion of the anti-slip device wound around the tread surface of the tire shifts in its widthwise position from the tire inner side to the outer side, the slackening of the body portion can be prevented by shortening the elastic member. Absorb.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show the present invention (particularly according to claims 3 to 6)
There is shown a first clamping device 1 according to the invention), the clamping device 1 is composed includes an apparatus body 2, and a reel drum 10 which is rotatably held within the main body 2. The tightening string body 200 included in the tire antiskid device 100 is
It is attached so as to form a loop through the tightening device 1.

As shown in FIGS. 2 to 4, the apparatus main body 2 includes
An inner plate 3 and an outer plate 4 are formed on a side portion of the base 5 so as to project in parallel with each other at a predetermined interval, and a reel holding space 6 is provided between these two plates. A reel holding hole 9 is formed in the center of the plate surfaces of the inner plate 3 and the outer plate 4 so as to penetrate therethrough. The device main body 2 is preferably formed of a resin material in order to reduce the weight. Fastening device 1
During use, the inner plate 3 faces the outer side surface of the tire 300 and the outer plate 4 faces outward. The base 5
The hook portion 7 is integrally provided on the hook by insert molding. The hook portion 7 is used for the tire anti-skid device 1
It is used to connect both ends in the longitudinal direction when the main body portion 101 of No. 00 is connected in a ring shape (see FIG. 7). A horizontal shaft 8 for connecting one end 202 of the tightening cord body 200 is bridged between the inner plate 3 and the outer plate 4 at a portion of the base portion 5 opposite to the reel holding space 6. ing.

As shown in FIGS. 2, 3 and 5, the reel cylinder 1
Reference numeral 0 denotes a body portion 11 having a shape in which a part of a cylindrical peripheral surface is recessed along the center of the circle, flange portions 12 provided at both ends in the width direction of the body portion 11, and a body portion 11 Both flanges 12 while maintaining a predetermined space between the outer peripheral surface and the recessed portion.
And a circular boss 14 projecting from the center of both widthwise end portions of the body portion 11 and fitted into the reel holding holes 9 of the apparatus main body 2. . A lever tool 80 is provided at the center of the circular boss 14.
A rectangular opening 15 for engaging the flat tip portion 81 (see FIG. 10) is formed therethrough. The reel barrel 10 is also preferably made of a resin material in order to reduce the weight.

A string hook is provided on the outer peripheral surface of the body portion 11 of the reel body 10.
Both sides of the tightening cord body 200 hung in a folded manner on the stop shaft 13.
So that the folded-back portions 210 and 211 are wound in a superposed manner
Has become. On the flange portion 12 of the reel body 10,
Ratchet teeth 21 with the tips directed only in one direction are formed on about half the circumference of the projecting end. On the other hand, the device main body 2 (see FIG. 4) is formed with a long hole 23 penetrating the front and back of the base portion 5, and at a position close to the long hole 23 of the inner plate 3 and the outer plate 4. , Hook-shaped notch 2
2 is formed. A lock piece 24, which is formed by bending a round bar into a rectangular frame shape, is loosely fitted over the long hole 23 and the cutout portion 22, and thus,
The hook piece 24 is tangential to the outer peripheral surface of the body portion 11 of the reel body 10.
It is connected to the main body 2 of the apparatus so that the position thereof can be changed .

The lock piece 24 is a base portion 5 of the apparatus body 2.
Due to the leaf spring 25 screwed to the reel body 10, the portion fitted in the notch 22 is always in the reel barrel 10 (ratchet teeth 21).
It is pressed and urged toward. This leaf spring 25
The tip portion is bent in an arc shape and directed toward the outside of the device body 2.
The operation portion 25a is formed to protrude, and this operation
By operating the part 25a from outside the device main body 2,
The urging of the hook piece 24 can be released.

These structures constitute a reverse rotation preventing mechanism 20 for the reel barrel 10 with respect to the apparatus main body 2. When the reel barrel 10 is rotated in the clockwise direction of FIG. The reel cylinder 10 idles only by swinging while tracing the outer edge of the reel cylinder 10. However, when the reel cylinder 10 is rotated counterclockwise, the lock piece 24 is caught by the ratchet teeth 21 and the reel cylinder 10 rotates. Is blocked.

On the cord hooking shaft 13 of the reel barrel 10, a proper position on the one end portion 201 side of the tightening cord body 200 is folded back.
And with are hung freely folded position adjustment, the
The one end portion 201 is drawn out of the temperature zone 2 of the apparatus.
The other end 202 of the tightening cord body 200 is connected to the horizontal axis 8 of the apparatus body 2. As shown in FIG. 1, as the tightening cord body 200, the elastic member 203 that expands and contracts along the axial direction at the intermediate portion of the non-stretchable cord main body portion 205 and the end portion 201 on the side hooked to the reel barrel 10. , 204 were used. The string main body 205 is made of nylon,
The elastic member 2 is formed of a fiber material such as polyester or polyethylene, a metal wire (wire), a resin wire, or the like.
03 and 204 are made of rubber or spring material.

A plurality of elastic members 204 connected to the middle portion of the cord main body 205 may be connected, but in that case, the total length of the elastic members 204 should be 100 mm or more before being stretched. Well, the amount of force required to stretch to twice its length from the state before stretching is 10 to 60 kg each.
What can be done in the range of is preferable. The tightening cord body 20
0 may be integrally formed in whole or in part by the elastic member as described above.

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. 6, on the tread surface of the tire 300, from the upper side thereof, 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. Then, the elastic member 203 on the end side is temporarily hooked on the hook metal fitting 102 at an appropriate position. Next, the vehicle is slightly backed up so that both ends of the main body 101 can be brought along the tread surface of the tire 300, the tightening cord body 200 is once removed, and the inside of the tire 300 of the anti-skid device 100 is tightened. After attaching the band, the body part 10
1 is pulled out to the outside, and connecting holes 103, 1 at both ends are formed.
The hook portion 7 is hooked on 03 to connect both ends thereof. At this time, the elastic member 204 in the middle portion is brought to a position substantially contrasting with the tension device 1. Further, in the tightening cord body 200, the loop-shaped portion is hooked on all the hook metal fittings 102 via the tightening device 1, and the portion folded back from the tightening device 1 to the end side elastic member 203 side can be manually operated. Pull out strongly. Then, as shown in FIG. 7, the lever tool 80 is engaged with the tightening device 1, and the lever tool 80 is swung in the direction in which the reel cylinder 10 rotates in the clockwise direction in FIG. 2 (see arrow B). As a result, the tightening cord body 200
It is possible to apply a strong tensile force along the axial direction to the.

Body portion 10 of tire antiskid device 100
1 was biased toward the inside of the tire 300, or when the tightening cord body 200 was insufficiently pulled out, the main body portion 101 was pulled out or the tightening cord body 200 was pulled out. Further, the lever tool 80 is further swung in the same direction as above (see arrow B) as necessary. As a result, the winding length of the tightening cord body 200 wound around the reel cylinder 10 becomes long, and a desired tensile force can be obtained. Remove the lever tool 80 from the tightening device 1,
Hook fitting 1 for optimally positioning the end side elastic member 203
If you call back 02, the work is completed.

The anti-skid device 100 for a tire is attached to the tire 300.
In order to remove the lock piece 24 from above, the lever tool 80 is engaged with the tightening device 1 and the lock piece 24 (see FIG. 2) of the tightening device 1 is lengthened while once applying a force in the same direction as described above (see arrow B). Hole 2
Retreat along 3. As a result, the lock piece 24 is disengaged from the ratchet teeth 21, so that the lever tool 80 is swung to the opposite side (or the lever tool 80).
And the reel body 10 is reversed (using the restoring force against the tensile force generated in the tightening cord body 200),
The tensile force acting on 00 is released.

8 and 9 show the present invention (in particular claim 1).
2 shows a second tightening device 50 according to inventions 2, 5, and 6). This tightening device 50 is a tightening cord body 500.
An endless loop-shaped one can be used as the first tightening device 1 because the structure is the most different from the first tightening device 1 in the base 55 of the device main body 51 (the first tightening device 1).
In the part where the horizontal axis 8 (see FIG. 2) was provided in
A through hole 60 for passing through the tightening cord body 500 is formed. That is, the middle portion of the tightening cord body 500 is folded around the cord retaining shaft 53 of the reel barrel 52, and the folded portions 501 and 502 are overlapped to form a reel barrel.
Wrapped around the outer peripheral surface of the body portion 11 of 10 and these folded portions 5
One side 501 of 01 and 502 draws a loop through the through hole 60, and then is returned to the string hook shaft 53 with or without the elastic member 204 or the like in the middle. The other structure is substantially the same as that of the first tightening device 1, and thus the description thereof will be omitted by giving the same reference numerals.

In this tightening device 50, when the reel barrel 52 is rotated in the clockwise direction in the figure, the tightening cord body 500 is pulled around the tightening device 50 on both sides thereof. Therefore, even when the tightening cord body 500 slips poorly with respect to the hook metal fitting 102 of the tire anti-skid device 100, the hook metal fitting 102 to the main body portion 10 are provided.
1 position deviation (abnormal pulling to the tightening device 50),
While preventing the hook metal fitting 102 from being caught in the tightening device 50, it is easy to apply a uniform tensile force to the tightening cord body 500 over its entire length.

When the tire anti-skid device is attached to the tire without jacking up, the main body part of the tire anti-skid device is not sufficiently pulled out to the outside of the tire, and the main body part is advanced as the automobile runs. May slip from the inside of the tire to the outside, the tightening cord body may become loose, the anti-skid device may be biased during traveling, and may be lifted by centrifugal force and contact the tire house. However, the first
According to the tightening devices 1 and 50 of the second embodiment, the elastic cords 204 continuously pull the tightening string bodies 200 and 500 in the tightening direction.
Even if the main body portion 101 of 00 moves from the inner side to the outer side of the tire 300, the elastic member 204 shortens accordingly and absorbs the looseness of the main body portion 101, so that the main body portion 101 is biased during traveling or lifted up. There is no contact with the house.

[0028]

According to the present invention of claim 1, the reel cylinder 1 is
0 parallel to the outer surface of the body 11
Equipped with a string hook shaft 53 integrally provided on the reel body 10.
The endless loop that is included in the anti-skid device for tires
In the middle of the tightening cord body 500, the cord locking shaft 53 is folded back.
One of the folded portions of the tightening cord body 500 is hung.
The minute 502 is wound around the outer peripheral surface of the body 11 of the reel body 10.
And the other folded-back portion on the outer side of the one folded-back portion 502.
Since the portion 501 is wound in a polymer form, the following
It is possible to exert a beneficial effect.

That is, the outer peripheral surface of the body portion 11 of the reel body 10
The folded back parts 501 and 502 wound around the
Since a tensile force is applied, each folding
The shank portions 501 and 502 are pressed against the outer peripheral surface of the body portion 11.
Growls Then, the folded portions 501 and 502 are polymerized.
Since it is wound in a shape, one folded portion 502 is
It is pinched by the other folded-back portion 501 and the body portion 11.
Therefore, with respect to the loop-shaped tightening cord body 500,
The relative position in the circumferential direction of the tightening device 50 is set to the tightening string body 500 itself.
It can be regulated by the pulling force of the
Holds the tightening device 50 at an optimum position without providing materials or the like
be able to. Further, the tightening cord body 500 is attached to the cord locking shaft 53.
It hangs in the shape of a fold, and the both fold back parts 501,502
Is wound around the outer peripheral surface of the body 11 of the reel body 10 in a superposed manner.
Because it is a thing, the endless loop tightening string body 500
You can take as much amount as you can,
Aiming to reduce the size of the tightening device 50 while ensuring the amount of strain
You can

In the present invention according to claim 2, the reel cylinder 10
The lever tool 80 engaged with the engaging portion 15 formed on the
The operating force to rotate the reel cylinder 10 in the tightening direction was applied.
Sometimes the moment around the hook 7 due to the operating force
The tensile force that produces a moment opposite to the
The folded-back portion 501 of the tightening cord body 500 on the acting side is
On the outside of the diameter of the other folded-back portion 502 wound around the portion 11.
Since it is wound in a polymer form, it has the following advantageous effects.
You can

That is, the reel cylinder 10 is rotated in the tightening direction.
When an operating force is applied to the lever tool 80 in order to
The tension of the tightening cord body 500 and the reel body 10 and the apparatus main body 51
Due to the frictional resistance with
Moment to rotate 51 around the hook 7
Occurs, but the reel barrel 10 is rotated and
The winding amount of each folded back portion 501, 502 is one
One turnback portion 501 is outside the diameter of the other turnback portion 502.
Since it is wound in a superposed manner on one side, one folded portion 5
The winding amount of 01 is larger, and the folded part on the other side
A large tensile force acts on 501, and one of the folded portions
The tensile force acting on the minute 501 is in the opposite direction to the operating force.
Therefore, the lever tool 8
The tilt of the device main body 51 is prevented when the operating force is applied to 0.
Can be stopped, and the hook portion 7 can be
It is possible to prevent entanglement and make tightening work easier and faster.
Can be planned.

In the present invention according to claim 3, the reel cylinder 10
Parallel to the outer peripheral surface of the body 11 of the
With a string hook shaft 13 provided integrally with the reel body 10,
A portion of the tightening cord body 200 close to the one end 201 of the cord hooking shaft 13.
The minutes are folded and the folding position can be adjusted freely.
And the folded-back portions 210, 2 of the tightening cord body 200.
The folded-back portion 211 on the one end 201 side of the
It is wound around the outer surface of the body 11 of the body 10
The other folded-back portion 210 is wound on the outer side of the 211 in a superposed manner.
It has been turned, and one end 201 of the tightening cord body 200 is a device book.
Since it is pulled out of the body 2, the following advantageous effects
Can be played.

That is, the tension work of the tightening cord body 200 is performed.
Upon that, firstly, it was drawn out of the apparatus main body 2 frettage
Pull out one end 201 of the tightening cord body 200 by hand.
The tension cord body 2 can easily and quickly apply a certain amount of tension force.
00, and the tightening cord body 20
0 is set to be long to accommodate large and small tire diameters
Also, pull out one end 201 to quickly adjust the tire diameter.
It is possible to apply a certain amount of tensile force corresponding to
Furthermore, when a tensile force is applied, one end 20
Even if the pull-out force of 1 is weakened, the tension of the tightening cord body 200 itself
Due to the force, the other folded-back portion 210 causes the reel body 10 to have a body portion.
11 The folded-back portion 21 is pressed toward the outer peripheral surface.
0 and the outer peripheral surface of the body portion 11, the folded portion on the one end portion 201 side
The minute 211 comes to be pinched, and the tightening cord body 200 is loosened.
Can be blocked by its own pulling force. It
In addition, after applying a certain amount of tensile force in this way,
Rotate the reel barrel 10 to apply a strong pulling force
Both folded portions 210 and 211 are formed on the outer peripheral surface of the body portion 11.
Since it is rolled up in a polymerized form, it has a strong pulling force with a small winding amount.
Can be operated.

In the present invention according to claim 4, the tightening cord body 20.
One end 201 of 0 is expandable / contractible along its axial direction.
For a tire through an elastic member 203 which is formed integrally or separately
Connected to the hook device 102 of the anti-skid device 100
Therefore, the following advantageous effects can be achieved. Sanawa
Then, with the elastic member 203 extended, the hook device 10
When it is hung on 2, it is wound around the outer peripheral surface of the body 11 of the reel body 10.
Both of the folded-back portions 211 and 211 of the tightened string body 200
A tensile force acts on each folded portion 2 by the tensile force.
10, 211 are pressed against the outer peripheral surface of the body 11.
It Then, the folded-back portions 210 and 211 are wound in a superposed manner.
Since it is turned, one folded portion 211 is
So that the folded-back portion 210 and the body portion 11 are clamped.
Therefore, the looseness of the tightening cord body 200 is prevented.
It can be regulated by its own pulling force, and the tightening cord body 2
00 is hooked on the cord hook shaft 13 so that the folding position can be adjusted.
However, the reel barrel 10
Even if the tightening cord body 200 is not provided with a fixing means, the tightening cord body 200
Looseness can be prevented by its own pulling force.

According to the present invention of claim 5, the spring 25
The operation section 25a formed on the device is operated from outside the apparatus main body 2.
By doing so, the bias to the lock piece 24 can be released.
If the reel barrel 10 is slightly rotated in this released state,
The engagement between the ratchet teeth 21 and the lock piece 24 is released by and
Can operate the lock piece directly and forcibly
This prevents the engagement with the ratchet teeth from being released.
It can be stopped and smooth work can be performed.

According to the present invention of claim 6, the lock piece is
When 24 is disengaged from ratchet teeth 21,
1 Position can be freely changed in the tangential direction of the outer peripheral surface and ratchet
Smooth engagement with the teeth 21 can be achieved.

[Brief description of drawings]

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

2 is an enlarged front sectional view of the tightening device of FIG. 1. FIG.

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

FIG. 4 is a front view showing an apparatus main body.

FIG. 5 is an enlarged front view showing a reel cylinder.

FIG. 6 is a perspective view showing a mounting state of a tire antiskid device.

FIG. 7 is a perspective view showing an operation state of the tightening device.

FIG. 8 is an overall view showing a second tightening device according to the present invention.

9 is an enlarged front sectional view of the tightening device of FIG.

FIG. 10 is a side view showing a lever tool.

FIG. 11 is an overall view showing a tightening device according to a prior application.

12 is a front cross-sectional view showing the tightening device of FIG. 11 in an enlarged manner.

[Explanation of Codes] 1 First tightening device 2 Device body 3 Inner plate 4 Outer plate 7 Hook part 10 Reel body 11 Body part 13 String locking shaft 20 Reverse rotation prevention mechanism 21 Ratchet tooth 24 Lock piece 25 Leaf spring 25a Operation part 50 Second tightening device 51 Device main body 52 Reel body 53 String locking shaft 100 Tire slipper device 101 Main body part 200 Tightening string body (having both ends) 203, 204 Elastic members 210, 211 of tightening string body Folded-back portion 300 Tire 500 Tightening cord body (endless loop shape) 501,502 Folded-back portion of the tensioning cord body

Claims (6)

[Claims] 1. A device body (51) comprising an inner plate (3) and an outer plate (4) held in parallel with each other at a predetermined interval.
And between the inner and outer plates (3, 4) of the device body (51),
And a reel drum rotatably held via a release operation is possible reverse rotation prevention mechanism (20) (10) when necessary
A tightening device for a tire anti-skid device, comprising: a portion between the reel body (10) and the outer peripheral surface of the body portion (11).
Installed on the reel barrel (10) in parallel at regular intervals.
A non-slip device for a tire, which is equipped with a hook (53) for hanging a cord.
The endless loop tightening cord body (500)
The middle part is hooked on the string hook shaft (53) in a folded shape.
And the folded portion (5) of the tightening cord body (500) on one side.
02) is wound around the outer surface of the body (11) of the reel body (10).
It is turned and the other is placed on the outer side of the one turnback part (502).
A tightening device for a tire anti-skid device, characterized in that one of the folded-back portions (501) is wound in a polymer form . 2. A device body (51) is provided with a tire slip stopper.
Hooked on the body part (101) of the device (100)
The hook (7) is connected to the reel barrel (10).
Is a reel extending radially outward from the center of the reel barrel (10).
An engaging portion (15) is formed with which the bar tool (80) is engaged.
And the lever tool engaged with the engaging portion (15)
Operation to rotate the reel barrel (10) in the tightening direction on (80)
Hook part (7) by the operating force when exerting a force
Moment that is opposite to the direction of the surrounding moment
Tightening cord body (500) on the side on which the pulling force that causes
The folded-back part (501) is wound around the body part (11)
Wrapped around the outside of the other folded-back portion (502) in a superposed manner.
The tightening device for a tire anti-skid device according to claim 1, wherein: 3. The inner plate (3) and the outer plate (4) are
A device body (2) which is held in parallel at a predetermined interval
Between the inner and outer plates (3, 4) of the device body (2).
Through a reverse rotation prevention mechanism (20) that can be released when necessary
And a reel barrel (10) rotatably held by
Tightening cord having both ends provided for an anti-slip device for an ear
The other end (202) of the body (200) is the device body (2).
In the tightening device of the anti-skid device for tires, connected to the outer peripheral surface of the body (11) of the reel body (10).
Installed on the reel barrel (10) in parallel at regular intervals.
The cord retaining shaft (13) is provided, and the cord retaining shaft (13) is provided.
The part near the one end (201) of the tightening cord body (200) is folded.
It is hung in a folded shape and the folding position can be adjusted freely.
The folded back portions (210, 210) of the tightening cord body (200).
211), the folded-back portion (21) on the one end (201) side
1) is wound around the outer surface of the body (11) of the reel body (10)
The other part of the folded part (211) is radially outward of the folded part (211).
The twisted portion (210) is wound in a superposed manner, and
One end (201) of the string (200) is the device body
(2) A tightening device for a tire anti-skid device, which is pulled out to the outside . 4. One end (201) of the tightening cord body (200).
Is a unitary body or a separate body that can expand and contract along its axial direction.
Non-slip device for tire through elastic member (203)
Be connected to the hook tool (102) of (100)
The tightening device for a tire anti-skid device according to claim 3, wherein . 5. The reverse rotation preventing mechanism (20) comprises a reel barrel (1).
Lock piece held close to or away from 0)
(24) and this lock piece (24) are
0), and a spring (25) for urging it toward the reel and the reel.
At the widthwise end of the body (10), with respect to the lock piece (24)
It meshes only in one direction of rotation and idles in the opposite direction.
And a ratchet tooth (21) formed as described above,
The spring (25) is provided with a lock piece from the outside of the device body (2).
An operation section (25 for releasing the urging to (24)
5. The method according to claim 1, wherein a) is formed.
A tightening device for a tire anti-skid device according to any one of 1. 6. A reel barrel (10) having a lock piece (24).
Position of tangential direction of outer circumference of body (11)
Claim characterized in that it is connected to the body (2, 51)
Item 6. A tightening device for a tire anti-skid device according to item 5.