JPH024802Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an anti-slip device that is attached to the tires of a vehicle during snowfall, etc.

(Prior Art) Metal tire chains are commonly used as anti-slip devices attached to vehicle tires when driving on snowy, frozen or muddy roads.
This stay chain is not only inconvenient in handling and storage, but also causes problems in terms of vibration, noise, and road damage during driving.

For this reason, recently, an anti-slip device has been proposed in which a plurality of anti-slip pieces made of synthetic resin or rubber are arranged in a ladder shape at appropriate intervals on parallel ropes or the like.

However, although this type of conventional anti-slip device has little vibration, noise, and road surface damage and is excellent in terms of storage stability, it still has the following problems that need to be improved.

That is, in the conventional anti-slip device, the anti-slip piece has a U-shaped cross section or uses a flat plate, and in any case, the ground contact portion has a uniform width as shown in Fig. 8A. Because it is just a plate-like structure, the friction with the road surface during braking causes this contact area to twist as shown in Figure B, and the tread pattern formed on the surface of the contact area becomes useful. Not only will the reinforcing wire, which is integrally molded inside the anti-slip piece, be subjected to excessive force, causing the wire to break and the anti-slip piece itself to be severed.

(Purpose) In view of these points, the present invention prevents the anti-slip piece from twisting during running, and ensures that the anti-slip unevenness formed on the surface of the ground contact area acts reliably. The purpose of this device is to provide an anti-slip device for tires that can prevent tire damage without imposing an unreasonable burden on the tires. In a tire slip prevention device comprising a plurality of anti-slip pieces made of elastic elastic material arranged in a ladder shape, the ground contact portion of the anti-slip pieces includes:
This is due to the fact that it has a constricted part facing the circumferential direction of the tire.

(Example) Hereinafter, the present invention will be described in detail based on the illustrated example.

Figures 1 to 7 show an anti-slip device according to an embodiment of the present invention. First, Figure 1 shows a state in which it is attached to a tire T, and Fig. 7 shows a part of the anti-slip piece in cross section. In the side view, reference numerals 1 and 1 in the figure are two ropes serving as a pair of cables, and each of the pair of parallel ropes 1 has nine hooks 2 at predetermined intervals. Nine anti-slip pieces 3, 3, . . . are attached by engaging these hooks 2 to form a tire anti-slip device S.

The anti-slip piece 3 is an integrally molded product made of a flexible elastic material such as rubber, and is bent into a substantially L-shape when viewed from the side. Locking holes 6, 6 are provided at both ends of the short side 4 and long side 5 of this anti-slip piece 3.
is formed, and a ring 7 surrounding the locking holes 6, 6 and a wire 8 as a strength member connecting these rings 7, 7 are integrally molded inside the anti-slip piece. Holds spike 9. By inserting the rubber of the anti-slip piece main body into the semicircular portions of the locking holes 6, 6, the anti-slip piece 3 itself is made difficult to come off from the hook 2.

The short side portion 4 of the anti-slip piece 3 is to be locked to the shoulder portion of the tire T, and has a short side portion 4 on the contact surface side of the bent portion.
Two grooves 10, 10 extending in the width direction, that is, in the rotational direction of the tire T are formed.

The long side portion 5 of the anti-slip piece 3 covers the tread surface of the tire T in the width direction, and its end portion is attached to the rope 1.
When the tire is forcibly bent by the traction force of
1, and spikes 9 are embedded in the ground plane at a predetermined distance left and right from this constriction 11. This spike 9 is formed into an inverted cup shape from a wear-resistant metal material, and is held on the long side 5 by inserting the lower part into the wire 8, and the outer surface is attached to the long side 5. It is arranged so that it is flush with the ground surface and the opening edge faces the road surface. Also,
A groove 12 is provided around the spike 9 along the longitudinal direction of the long side portion 5.

Furthermore, on both sides of the long side 5 of the anti-slip piece 3,
A plurality of semicircular vertical grooves 13 are provided in the thickness direction, and two grooves 14, 14 similar to the grooves of the short side 4 described above are formed on the end side of the long side 5. has been done.

The anti-slip piece 3 is detachably attached by engaging the hook 2 of the rope 1 with the ring 7 of the locking hole 6.

Incidentally, reference numeral 15 in the figure represents an engaging member attached to both ends of each rope 1.

The anti-slip device S constructed in this manner is able to hold the tire T in the manner shown in FIGS. 5 and 6.
will be installed on the That is, first, one end of the outermost anti-slip piece 3a is removed from the hook 2, and the anti-slip device S is placed on the road so that the tire T is located in the space created by this between both ropes 1 and 1'. Draw. Next, the anti-slip piece 3a is engaged with the hook 2, and the anti-slip device extending rearward in FIG. match. In this state, each anti-slip piece 3 has its short side 4 firmly secured to the inner shoulder of the tire T. Finally, both ends of the outer rope 1' are engaged in the same way, but at this time, each anti-slip piece 3 has its long side 5 pulled by the rope 1' so that the tire T By bending it so as to come into contact with the outer shoulder, it can be tightly attached to the outer circumferential surface of the tire T without any gaps (see FIGS. 1 and 6). The grooves 10 and 14 allow each anti-slip piece 3 to be bent easily at both ends, and is securely fitted to the outer peripheral surface of the tire T. It should be noted that the device can also be mounted in other ways than those described above, for example by moving the tire onto the anti-slip strip, similar to conventional devices of this type.

When a vehicle equipped with this anti-slip device S is braked, the anti-slip piece 3 receives a large twisting force due to friction with the road surface, but the anti-slip piece 3 itself is made of a flexible elastic member. Moreover, since the constricted part 11 is formed at the center of the long side part 5 in contact with the ground, the above twisting force is reduced as shown in FIG.
As shown in (B), the bending displacement of the anti-slip piece 3 in the horizontal direction with the constriction 11 as the bending point is absorbed, and therefore the anti-slip piece 3 is prevented from twisting or twisting. Rather, the various grooves 10, 12, 14, etc. provided on the ground surface provide reliable grip.

To explain this grip in detail, first,
During driving, the anti-slip piece 3 interposed between the tire T and the road surface deforms in the direction in which the groove 12 around the spike 9 opens due to the pressure, so that the tips of the spikes 9 are properly moved away from the contact surface of the anti-slip piece 3. It has a protruding shape and bites the road surface to create an anti-slip effect (fourth
(see figure). Therefore, there is no risk of damage to the road surface due to excessive protrusion of the spikes 9. Furthermore, the two grooves 10 and 14 formed at both ends of the anti-slip piece 3 resist the road surface and prevent the tire T from skidding.

Furthermore, in the case of this anti-slip device, the anti-slip piece 3
Since a plurality of vertical grooves 13 are formed on the side edge of the anti-slip piece 3, this together with the constricted part 11 prevents the entire side edge of the anti-slip piece 3 from colliding with the road surface at the same time, dispersing the impact and reducing vibration. This can contribute to improving riding comfort.

In this embodiment, each anti-slip piece 3 is detachably attached to a hook 2 fixed to a rope, but the present invention is not limited to this.
It goes without saying that it may be fixed to the hook 2, but by adopting the structure of this embodiment, it becomes possible to replace only the damaged anti-slip piece, which improves the economic efficiency of the entire device. It can contribute to

In the embodiments described above, rubber is used as the flexible elastic material, but it goes without saying that this invention is not limited to this, and soft plastics may also be used.

(Effects of the invention) As explained above, the present invention provides an anti-slip device in which a plurality of anti-slip pieces made of flexible elastic material are arranged in a ladder shape at appropriate intervals on parallel ropes, etc. The ground contact area of the anti-slip piece has a constricted part facing in the circumferential direction of the tire, so even if a large force is applied to the anti-slip piece when braking the vehicle, this Since the acting force can be absorbed by the horizontal bending displacement of the constricted portion, the anti-slip piece does not twist or twist, and the anti-slip effect is fully demonstrated and damage is less likely to occur. .

[Brief explanation of the drawing]

The drawings show an anti-slip device according to an embodiment of the present invention. Fig. 1 is an overall perspective view of the device installed on a tire, and Fig. 2 shows a part of the anti-slip piece that constitutes the main part. 3 is a cross-sectional side view of FIG. 2, FIG. 4 is a cross-sectional view of FIG. 7A and 7B are explanatory diagrams showing the bent state of the anti-slip piece, and FIG. 8 is an explanatory diagram for pointing out the problems of the conventional anti-slip device. In the figure, 1 is a rope, 3 is a non-slip piece, 4 is a short side, 5 is a long side, 8 is a wire, 9 is a spike,
10, 12, and 14 are grooves, 11 is a constriction, 13 is a vertical groove, T is a tire, and S is a non-slip device.

Claims (1)

[Scope of utility model registration request] In a tire skid device in which a plurality of non-slip pieces made of a flexible elastic material are arranged in a ladder shape between two parallel cable bodies, a ground contact portion of the non-slip pieces is provided with: An anti-slip device for a tire, characterized by having a constricted portion facing in the circumferential direction of the tire.