JPH0356083Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a tightening device for a tire anti-slip device.

(Prior art and its problems) Conventionally, when attaching a net-type anti-slip device to a tire, the anti-slip device is first wound around the outer circumferential surface of the tire and both ends are connected, and then the anti-slip device is After tightening the inner edge of the net with a tightening rope or the like, a ring-shaped rubber band or the like is attached along the outer edge, thereby pulling the anti-slip device toward the center of the tire and bringing it into close contact with the tire.

However, there is a limit to the tightening force of the rubber band mentioned above, and excessive centrifugal force is generated when driving at unreasonable high speeds.If this centrifugal force exceeds the tightening force of the rubber band, the rubber band and the anti-slip device will It started to spread,
The adhesion to the tire begins to decrease.

In the above-mentioned state, the anti-slip device may shift relative to the tire, or the load may be concentrated on a specific portion, leading to the risk of problems such as falling off or partial breakage.

(Technical Problem) The technical problem of the present invention is to provide a tire anti-slip device with a function of preventing it from spreading when a large centrifugal force is generated in the net body of the anti-slip device.

(Means for Solving Technical Problems) The means taken by the present invention to solve the above-mentioned technical problems is that the net is hooked along the outer edge of the net body of the anti-slip device for tires attached to the outer circumferential surface of the tire. A rubber band is hung through the hook, and the braider string is formed into a ring shape of a predetermined diameter, and the hanging metal fittings are fixed at equal intervals in the circumferential direction, and the hanging metal fittings are hung on the said hanging hook. This is what happens.

(Function) According to the above means, when the blader string is attached by being spread out along the outer edge of the anti-slip device which is attached by winding it around the outer circumferential surface of the tire, the elasticity of both the rubber band and the blader string is applied. The anti-slip device is then pulled in toward the center of the tire, bringing the net body into close contact with the tire.

When the centrifugal force generated on the net body of the anti-slip device exceeds the tightening force of the braider string while the vehicle is running, the anti-slip device expands and the adhesion of the net body of the anti-slip device to the tire begins to decrease. When the fiber portion of the braider string reaches its limit, the braider string stops spreading, and the net itself will not spread further even if centrifugal force increases.

(Effects) Since the present invention is as described above, the spread of the net body due to centrifugal force is kept in its initial state, and the adhesion force of the anti-slip device to the tire is always kept to the minimum necessary by using the rubber band and braider string. can be kept above. Therefore, it is possible to prevent a portion of the anti-slip device from breaking or falling off due to insufficient adhesion of the anti-slip device.

Furthermore, since the structure of the tightening device can be made extremely simple, manufacturing is simple and weight reduction is also possible.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on the drawings. As shown in FIG. Hooks 7 on both inner and outer edges of D′
A tightening rope 6 is attached to the inner side, and several ring-shaped rubber bands F are hooked to the outer side, and the net body D' is wrapped around the tire C as shown in Fig. 2. After connecting both ends of the net body D' and connecting both ends of the inner tightening rope 6 to tighten the inside, hang the two rubber bands F on the hooks 7 on the outside of the net body D'. Then, the latching fitting 3 of the blader string A is latched to the latching hook 7 to attach it to the tire C.

Braider string A is rubber string 1 as shown in Figure 4.
The bundle is formed into a link-like string body A' consisting of a string such as a round rubber string or a shock cord covered with a woven fabric 2 made by folding strong fibers stretchably in the longitudinal direction. The latch fittings 3 are caulked and fixed at equal intervals in the circumferential direction, and when the bundle of rubber strings 1 in the main body A' expands and contracts while producing elasticity, and the woven fabric 2 stretches to its limit, It has the property of not being able to grow to any longer length.

The braider string described above may be constructed by covering a bundle of stretchable woven fabric strings 2' with a rubber tube 1' as shown in FIG.

When attaching the anti-slip device D to the tire C, as described above, the net body D' is wound around the outer circumferential surface of the tire C, and its both ends are connected depending on the form of the net body D', for example, the connecting band 4, 4 into the connecting parts 5, 5 to connect both ends, and then connect both ends of the inner tightening rope 6 to tighten the inside of the net main body D', and then tighten the outer edge with the rubber band F and braided cord A. Use to tighten.

The braid string A is used together with several rubber bands, for example, two ring-shaped rubber bands F, and these rubber bands F are attached to each hook attached to the outer edge of the net body D' in the anti-slip device D in the above state. The anti-slip device D is sequentially hooked along the stopper hook 7, thereby accurately setting the anti-slip device D on the tire and preliminarily tightening the anti-slip device D.

Thereafter, each of the latching fittings 3 of the braid string A is sequentially latched to the corresponding latching hook 7 attached to the outer edge of the net main body D'. As a result, the string main body A' is expanded into a substantially pentagonal shape as shown in the figure, and this elasticity, together with the elasticity of the two rubber bands F mentioned above, pulls the outer edge of the anti-slip device D toward the center of the tire C. Press firmly against C.

During running, when the centrifugal force generated in the anti-slip device D exceeds the tightening force between the blade string main body A' and the two rubber bands F, the blade string main body A' temporarily expands as shown in Fig. 6. The adhesion of the anti-slip device A to the tire C begins to decrease.

However, when the woven fabric 2 in the main body A' is stretched to its limit, the blade string main body A' stops expanding, and on the other hand, a tensile force (contraction force) is applied to the rubber string 1, tightening the anti-slip device D. The adhesion force does not decrease even if the centrifugal force increases thereafter, and is maintained above the required value.

Therefore, the diameter of the blade string body A' is set so that the diameter of the blade string body A' is set to
The setting is such that each latch fitting 3 can just be latched onto the latching hook 7 when A' is stretched close to its limit.

The type, thickness, expansion/contraction ratio, and number of hooks of the braider string in the tightening device of the present invention are determined depending on the usage conditions and purpose, and are not limited to the above-mentioned conditions.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the braider string used in the tightening device of the present invention, Fig. 2 is a front view showing the attached state of the braider string, Fig. 3 is a sectional view taken along the - line in Fig. 2, and Fig. 4 1 is a sectional view taken along the - line in FIG. 1, FIG. 5 is a sectional view of a braider string made of a woven fabric string covered with a rubber tube, FIG. FIG. 7 is a partially cutaway front view of the anti-slip device. In the figure, A...Blade string, A'...Blade string body, C...Tire, D...Slip stopper, D'...
...Net body, F...Rubber band, 3...Latching metal fitting, 7...Latching hook.

Claims (1)

[Scope of utility model registration request] A rubber band is hung along the outer edge of the net body of the anti-slip device for tires attached to the outer circumferential surface of the tire, and the braider string is formed into a ring shape with a predetermined diameter to make the hook ring circular. A tightening device for a tire slip stopper that is fixed at equal intervals in a circumferential direction and that locks the locking metal fittings on the locking hook.