JPH05262108A - Fastening device for tire antislipping tool - Google Patents

Abstract

PURPOSE:To secure sufficient fastening force, clarify tightening finish point, prevent breakage, and facilitate fastening release. CONSTITUTION:In a fastening device 1 for a tire antislipping tool, which a fastening cable 3 via engaging hooks to a plurality of positions of respective end edge parts in the width direction of the antislipping tool main body, one end 3A of the fastening cable 3 outside of a tire is fitted to a fastening tool main body 4 and the other end 3B is wound around a gear 5 turnably fitted inside the fastening tool main body 4. and locked to a cable receiving part 6 provided inside the fastening tool main body 4 by a locking claw 7 energized by a coil spring 8. Additional tightening can be performed by turning the gear 5 by means of an operation handle and further a release mechanism 9 for releasing energizing force of the coil spring 8 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening device for tightening a tightening cord of a tire slipper which is used by being wound around an outer peripheral surface of an automobile tire.

[0002]

2. Description of the Related Art When a vehicle travels on snowy roads, icy roads, etc., a tire anti-slip consisting of a non-metallic anti-slip body such as metal chain or rubber is generally used. In both cases, the widthwise ends are hooked on the inner and outer sides of the tire with a tightening cord such as a wire rope or a rubber ring, and the tire is tightened and attached.

Conventionally, as an example of this kind of tire anti-skid device,
As shown in FIG. 4, each end portion 31A of the anti-skid body 31 having a required width that can be fitted to the outer peripheral surface and both inner and outer side surfaces of the tire T by an elastic body such as rubber is attached to the engaging hook 32. Is connected to the tightening cord 33 via one end, and one end of the tightening cord 33 is attached to the tightening device main body 35 that is connected to both ends of the connecting band portion 34 of the anti-skid tool body 31 so as to connect them, and the other end There is a lock function in the tightening tool main body 35 that is wound around a locking member (not shown), and the rope end 33A is hooked on the engaging hook 32 or the like (actual application 2
-129075).

The locking member with a lock function can be locked to the tightening tool body by a lock member which can be engaged and disengaged. The tightening of the tightening cord 33 is performed by the operation handle 36.
Is performed by rotating the locking member.

[0005]

By the way, in the above-mentioned prior art, the tightening of the tightening cord 33 is performed by the operation handle 36 as described above, but the tightening end point is unclear, and the tightening cord 33 or the device is damaged. There is a problem that it is difficult to operate the lock member, especially to release the lock, and it is difficult to obtain a sufficient tightening force from the beginning.

The present invention has been made in view of the above-mentioned actual circumstances, and the purpose thereof is to obtain a sufficient tightening force from the initial stage, and the end point of tightening is clear and there is a risk of damage. Another object of the present invention is to provide a tightening device for a tire slipper that does not come loose and is easy to release tightening and does not come off or loosen due to vibration during traveling.

[0007]

In order to achieve the above object, the present invention takes the following technical means. That is, the present invention is a tightening device for a tire anti-skid, wherein the tightening cord is engaged with a plurality of widthwise end edge portions of the anti-skid main body via engaging hooks. One end of the tightening cord is attached to the tightening device main body, and the other end is wound around a gear rotatably attached to the tightening device main body, and can be engaged with and disengaged from a cord receiving portion provided on the tightening device body. It is characterized in that it is locked by various locking claws.

Further, the present invention is characterized in that the gear can be rotated by an operation handle. Further, the present invention is characterized in that the locking claw is provided with a release mechanism for constantly pressing the rope receiving portion by the biasing means and canceling the biasing force of the biasing means.

[0009]

According to the present invention, after the main body of the anti-skid device is wrapped around the outer circumference of the tire, both ends of the tightening cord on the tire inner side are connected to each other, and the tightening cord on the outer side of the tire is tightened in the tightening device body and the tightening device body. , And the other end of the tightening cord is pressed against the cord receiving portion by the locking claws to be locked, and the other end of the tightening cord is pulled against the pressing force of the biasing means to make the tension. Then, while further pulling the other end of the tightening cord, the gear is rotated in the tightening direction by the operation handle, whereby the tightening of the tightening cord is performed.

When the tightening force of the tightening cord exceeds a certain value, the gear slips with respect to the tightening cord, no more tightening force acts, and the tightening end point can be clearly understood.
Note that the tightening cord is always strongly pressed and locked to the rope receiving portion by the locking claw, and the biasing direction of the biasing means is the tensioning direction of the cord. There is no.

When removing the tire slip stopper from the tire,
By operating the urging force releasing mechanism of the urging means, the tightening cord pressing force by the locking claw is released, and the tightening cord is in the unlocked state, that is, the free state. It can be easily removed by disconnecting it.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of a tightening device 1 according to the present invention, and the tire slipper to which this is mounted is the same as that shown in FIG. 4 described in the conventional example, so only the tightening device will be described. ..

The tightening device 1 includes a tightening cord 3, which is engaged with the anti-skid body at its widthwise outer end through an engaging hook and a connecting fitting 2, a tightening tool body 4, and a tightening device body 4. It comprises a gear 5 movably mounted, a locking claw 7 for pressing and locking the tightening cable 3 on the cable receiving portion 6, a claw urging means 8 and a urging force releasing mechanism 9. The connecting fitting 2 is formed by bending a single wire into a bilaterally symmetrical shape, and has a hook-shaped mounting portion 2B and an engaging portion 2C which are separated from the central portion 2A in a bifurcated manner.
2A is engaged with the tightening tool body 4, the mounting portion 2B is inserted into the tire outer side end of one of the connecting strips of the longitudinal end portion of the anti-skid body and fixed by caulking, and the engaging portion 2C is non-slip. It is adapted to be engageably and disengageably engaged with the other connecting belt portion of the tool body. The mounting portion 2B may be detachably engaged with the connecting belt portion.

The tightening cord 3 is made of a non-stretchable material (for example,
It has a flat belt shape consisting of nylon, polyester, polyamide, steel, etc. with low elongation (composed of single or a combination of steel, etc.) and has low elongation and high strength during tightening. It is configured to prevent the anti-skid body from swelling due to a centrifugal force, and at least the outer peripheral portion of the anti-skid body to resist contact friction with metal.

The tightening tool body 4 is made of metal or nylon,
Front and rear plate-shaped frames 4A, 4 made of polycarbonate and other resins called engineering plastics
B is connected and integrated by a plurality of tacks 11 and 12 through the rope guide 4C having an arc portion, the rope locking cylinder 10 and the rope receiving portion 6, and the central portion of the connecting metal fitting 2 is attached to the upper end of the rear frame 4B. An engaging portion 13 into which 2A is fitted and engaged is provided.

The frame constituting the tightening tool body 4
4A, 4B, the rope guide 4C, the rope receiving portion 6 and the rope locking cylinder 10
Between the shafts 5A and 5A are provided with mounting holes 14 and 15 for the gear 5, and both shafts 5A of the gear 5 are rotatably mounted. The locking claw 7 is rotatably attached to the lower side of the receiving part 6 by a shaft 16, and a line guide 17 is provided on the line entrance side of the claw 7 to provide the line receiving part.
The other end 3B of the tightening cord 3 is inserted between the cord 6 and the cord guide 17.

Further, in the front frame 4A of the main body 4,
A rectangular opening 18 that is horizontally long and is located below the mounting hole 14.
Is provided in a penetrating manner, and a rectangular concave portion 19 is formed on the inner surface (rear side) on the lower side of the opening 18. The rear frame 4B of the main body 4 is provided with through holes 20 corresponding to the openings 18 of the front frame 4A.

The gear 5 has a toothed portion 5B on the outer periphery which is serrated so that the other end 3B of the tightening cord 3 is wound around the outer periphery thereof, and the tightening cord 3 is tightened by the tooth portion 5B. Be done. Further, the shaft portion 5A of the gear 5 is provided with an operation handle engaging hole 21 having a substantially rectangular cross section so as to penetrate, and the gear 5 can be forcibly rotated by an operation handle (not shown). The locking claw 7 has the biasing means 8 formed of a coil spring in the inner chamber via a spring receiving cylinder 22 so that the claw portion 7A faces and is pressed against the rope receiving portion 6. One end 8A of the coil spring is locked by the locking pawl 7 and the other end 8B of the coil spring is locked by the biasing force release lever in order to apply the upward biasing force of the biasing means 8. It is locked at 23.

The urging force releasing mechanism 9 is provided in the lower portion of the tightening tool main body 4, and one end 23A thereof is rotatably attached to the front and rear frames 4A and 4B coaxially with the locking claw 7 by the shaft 16. The biasing force release lever 23, a lever lock member 24 having a locking hook 24A, and a coil spring 25 for locking. The lever 23 has a substantially groove-shaped cross-section and is formed so as to close the lower opening between the front and rear frames 4A and 4B of the tightening tool body 4, and a locking square hole 26 for locking is provided at the front end of the front frame 4A side. A locking hook 24A of the lever lock member 24 is fitted in the hole 26, and supports the biasing means 8. Further, a locking claw pushing piece 27 is provided at the mounting end 23B of the lever 23 to the frame 4A, 4B, and a pushing operation provided at a lower portion of the locking claw 7 is provided by the pushing piece 27. Department
By pushing 28, the claw 7A is forcibly separated from the tightening cord 3.

The lever lock member 24 is the frame
Lock release operation part 24B that slidably fits into the opening 18 of 4A
And a sliding guide shaft portion 24C slidably fitted in the through hole 20 of the rear frame 4B and the locking hook 24A, and the coil spring 25 is externally fitted to the sliding guide shaft portion 24C. The locking hook 24A is always biased in a direction to be fitted into the recess 19 of the front frame 4A. In addition, the front frame 4A of the locking hook 24A
The side surface 29 on the side is inclined downward so that the biasing force release lever 23 allows the lever lock member 24 to be withdrawn from the recess 19 against the biasing force of the coil spring 25.

In the above embodiment, one end 3A of the tightening cord 3
Is fixed by wrapping it around the rope locking cylinder 10 and the other end of the tightening rope 3.
3B is an urging force release lever as shown by the two-dot chain line in FIG.
After releasing the lock of 23 to make the locking claw 7 not urged, insert it into the tightening tool main body 4 from between the rope receiving portion 6 and the rope guide 17 and wind it around the outer periphery of the tooth portion 5B of the gear 5. Hang it, pull it out from the main body 4 from between the upper rope guide 4C and the rope receiving portion 6, and attach the locking metal fitting to the tip of the other end 3B via a coil spring or the like. Alternatively, after allowing the hook 23 to be hooked on the locking hook of the tightening cord 3, the lever 23 is pushed into the tightening tool body 4, and the locking hook 24A of the lever lock member 24 is fitted and locked in the locking square hole 26. Then, the lever is locked, and the tightening claw 7 is locked and fixed by the biasing means 8.

Next, when the tire slipper is attached to the tire and the tightening cord 3 is tensioned, the tire slippery is put on the outer circumference of the tire as in the conventional case, and the tightening cord on the inner side of the tire and the main body of the slipper are connected. Then, the engaging hook on the outer side of the tire is hooked on the tightening cord 3, and the engaging portion 2C of the connecting fitting 2 attached to the tightening device body 4 is hooked on the end of the connecting band of the anti-skid body. Then, when the other end 3B of the tightening cord 3 is pulled by hand in the direction indicated by the arrow A in the figure, the loosened tightening cord 3 is tensioned. At this time, the other end 3B of the tightening cord 3 is pressed and locked by the locking claw 7 to the cable receiving portion 6 and is not loosened. Therefore, an operation handle (not shown) is inserted into and engaged with the handle engaging hole 21 of the gear 5 to secure the tightening cord.
While pulling the other end 3B of 3 in the direction of tension indicated by arrow A in FIG. 3, the gear 5 is rotated in the tightening direction indicated by arrow B in FIG. edge
3B is moved in the direction of the arrow by the gear 5, and the tightening force of the tightening cord 3 increases.

When the tightening force of the tightening cord 3 reaches a predetermined value, the gear 5 slips with respect to the tightening cord 3 and the tightening force above the predetermined value does not act. Therefore, when the gear 5 starts slipping, the tightening end point can be clearly confirmed. Since the tightening cord 3 is pressed and locked by the locking claw 7 to the rope receiving portion 6 even when the vehicle is running, it is extremely safe since it does not come loose or come off.

When the tension by the tightening device 1 is released to remove the anti-skid device from the tire, the unlocking operation portion 24B of the lever lock member 24 is moved in the direction indicated by the arrow C in FIG. Locking hook by pushing against
24A comes out of the locking square hole 26 for locking, and the lever 23
Is pushed downward from the tightening tool body 4 by the elastic force of the biasing means 8, and the biasing force of the locking claw 7 by the biasing means 8 is released similarly.

Next, by holding the urging force release lever 23 by hand and further rotating it in the direction indicated by the arrow D in FIG. 1, the locking claw pushing piece 27 of the lever 23 moves the locking claw 7 of the locking claw 7. The locking claw 7 is brought into contact with the push operation portion 28, and the claw portion 7A of the locking claw 7 is received by the rope receiving portion
Rotate in the direction away from the
Since 3 becomes loose, remove the hook for locking the anti-skid body from the tightening cord 3, and also remove the engaging part 2C of the connecting metal fitting 2 from the anti-skid body to easily remove the tire anti-slip device. You can

According to the above-described embodiment of the present invention, the releasing of the urging force of the locking claw 7 and the release of the tension of the tightening cord 3 can be performed extremely easily and surely, and the workability of attaching and detaching the tire slipper can be improved. Can be significantly improved. The present invention is not limited to the above embodiments, and can be modified in design as appropriate.

[0027]

As described above, according to the present invention, the tightening of the tire anti-skid device is such that the tightening cords are engaged with a plurality of widthwise end edges of the anti-skid device body through engaging hooks. In the device, the tightening cord on the outer side of the tire is provided on the tightening tool body while having one end attached to the tightening tool body and the other end wound around a gear rotatably attached to the tightening tool body. It is characterized in that it is locked to the rope receiving part by a disengageable locking claw, so that a sufficient tightening force can be obtained from the beginning and the tightening end point can be clearly confirmed. In addition, there is no risk of damage due to over-tightening, and the tightening cords will not loosen or come off due to vibrations during running, which is extremely safe and the tightening can be released easily.

Further, the present invention is characterized in that the gear can be rotated by the operation handle, so that the tightening of the tightening cord is easy and reliable. Furthermore, the present invention is characterized in that the locking claw is provided with a release mechanism that constantly presses the rope receiving portion by the biasing means and releases the biasing force of the biasing means. It is extremely easy to release the tightening cord lock with the pawl.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a perspective view showing a mounted state of a conventional example.

[Explanation of symbols]

 1 tightening device 3 tightening rope 3A one end 3B other end 4 tightening tool body 5 gear 6 rope receiving portion 7 locking claw 8 biasing means 9 biasing force release mechanism

Claims (3)

[Claims] 1. A tightening device for a tire anti-skid device, wherein a tightening cord is engaged with a plurality of positions of each end edge portion in the width direction of a non-skid device via engaging hooks. One end of the tightening cord is attached to the tightening tool body, and the other end is wound around a gear rotatably mounted to the tightening tool body,
A tightening device for a tire slipper, wherein the tightening device is provided on the tightening tool body and is locked by a locking claw that can be engaged and disengaged. 2. The tightening device for a tire slipper according to claim 1, wherein the gear is adapted to be rotated by an operation handle. 3. The tire according to claim 1, wherein the locking claw is provided with a release mechanism that constantly presses the rope receiving portion by the biasing means and releases the biasing force of the biasing means. Tightening device for anti-skid.