JPH0436963Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is an anti-slip device for tires that is attached to the tires of a car when driving on snowy roads.

[Prior Art] Metal tire chains are commonly used as anti-slip devices attached to car tires when driving on snowy or icy roads, but tire chains are inconvenient to handle and store. However, vibrations, noise, and road damage occur when driving.

For this reason, recently, an anti-slip device has been known from Japanese Utility Model Publication No. 57-9124, in which a plurality of anti-slip pieces made of synthetic resin or plastic rubber are arranged in a ladder shape on a pair of parallel ropes. .

[Problem to be solved by the invention] An anti-slip device equipped with anti-slip pieces produces relatively lower levels of vibration and noise than a tire chain, but
However, conventional anti-slip pieces cannot reduce vibration and noise to an uncomfortable level.

This is due to the fact that the cross section of the conventional anti-slip piece is rectangular. In other words, since the cross section of the non-slip piece is rectangular, when the non-slip piece touches the ground during driving, and then the tire rides on the non-slip piece, the tire instantly rises to a height approximately equal to the thickness of the non-slip piece. This is because unpleasant vibrations and noise are generated.

For this reason, it is possible to reduce the thickness of the anti-slip piece to lower the height at which the tire rides on the ground, but in this case, the frictional force with the snowy road decreases and the anti-slip effect decreases. It's something to put away.

The present invention has been made based on the above-mentioned problems, and an object of the present invention is to provide an anti-slip device for a tire that can reduce vibration and noise during running without reducing the anti-slip effect.

[Means for Solving the Problems] The present invention connects anti-slip pieces made of an elastic material such as rubber or synthetic resin to the tire using cables and connecting fittings at appropriate intervals, and also adds spikes to the anti-slip pieces. A pin is provided, the spike pin is formed into a cylindrical shape, the base thereof is buried in the anti-slip piece, a large diameter mounting seat is formed in the base, and a through hole is formed in the circumferential surface of the spike pin. The end of the connecting cable that penetrates this through hole is wound around and connected to the outer circumferential groove of a ring provided separately at the end of the anti-slip piece, and the engagement is inserted into the ring. A narrow constriction is formed in the center of the non-slip piece, and the tread of the non-slip piece is made thinner at the ground contact start end and the ground contact end in the longitudinal direction of the cable body. It is provided with an inclined section.

[Function] When the anti-slip piece is attached to a tire, the anti-slip piece first touches the ground, and then the tire rides gently on the anti-slip piece along the slope.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 5.

One end of a plurality of connecting fittings 2, 2A is fixed to each of two parallel ropes 1, 1A at a predetermined interval, and each end of the anti-slip piece 3 is connected to these connecting fittings 2, 2A. By doing so, the anti-slip pieces 3 are arranged in a ladder shape to constitute a tire anti-slip device S.

Although the drawing shows a case in which the number of anti-slip pieces 3 is nine, it is also possible to have eight to twelve anti-slip pieces 3.

The anti-slip piece 3 is an integrally molded product made of a flexible elastic material such as rubber or synthetic resin, and is bent and molded into a substantially L-shape when viewed from the front.
At the ends of the long side portion 5, locking holes 6 and 7 are formed to connect to the connecting fittings 2 and 2A, respectively. Rings 8 and 9 surrounding the locking holes 6 and 7 are provided inside the anti-slip piece 3, and a wire 10 as a strength member is integrally molded between these rings 8 and 9. Spike pin 1 whose tip appears on the tread 3A of the anti-slip piece 3
1 and 11A. These spike pins 11, 11A are formed in a cylindrical shape, and have a large diameter mounting seat 11B formed at the base thereof.
A through hole 11C is provided on the circumferential surface of the cylindrical portion.

Further, the tread 3A of the anti-slip piece 3 is gradually thinned near both ends of the ropes 1, 1A in the longitudinal direction near the grounding start end A and near the grounding end B to form one side and the other side sloped portions 3B, 3C, respectively. . In other words, the sloped portions 3 and 3C are formed so that the central part of the anti-slip side 3 is thick, while the slopes 3 and 3C are thinner near both longitudinal ends of the ropes 1 and 1A, so that the cross-section of the anti-slip piece 3 is made approximately large. Shall be radial.

Further, the short side portion 4 of the anti-slip piece 3 is locked to the shoulder portion of the tire T.

The long side portion 5 of the anti-slip piece 3 in which the groove 12 is formed
covers the surface of the tread 3A of the tire T in the width direction, and its end portion is forcibly bent by the traction force of the ropes 1 and 1A, so that it comes into contact with the shoulder portion on the other side of the tire T.

The anti-slip piece 3 has a plurality of constrictions 13, and a narrow constriction 13A is formed in the center of the anti-slip piece 3, and the spike pins 11, 11A are embedded in the vicinity of this constriction 13A. ing.

The connecting fittings 2 are formed by bending a pair of left and right U-shapes at a distance from each other in the center of the rod, and attaching them to the cable fixing portion 2.
B is provided, and the ends of the bars are arranged side by side and integrally formed, and the cable body fixing part 2 is arranged so as to be able to engage with the locking holes 6 and 7 of the anti-slip piece 3.
A U-shaped engagement part 2C is provided by bending in the same direction as B, and the cable body fixing part 2B is caulked to the ropes 1, 1A, and the connecting fitting 2 is attached to the ropes 1, 1A as appropriate. They are fixed at intervals.

Next, the operation will be explained based on the above configuration.

The anti-slip device S is attached to the tire T in the manner shown in FIG. That is, first, one end of the outermost or appropriate anti-slip piece 3 is removed, and the anti-slip device S is pulled onto the road so that the tire T is located in the space created by this between the two ropes 1 and 1A. Next, the anti-slip piece 3 in the appropriate position is engaged, and the ropes 1, 1 are placed inside the tire T so as to cover the outer peripheral surface of the anti-slip device S extending backward from the rear of the tire T.
Engage both ends of A. In this state, each anti-slip piece 3 has its short side 4 firmly secured to the inner shoulder of the tire T. Then, both ends of the outer rope 1 are engaged in the same way, and at this time, each anti-slip piece 3 has its long side 5 pulled by the rope 1 so that the anti-slip piece 3 is attached to the outside of the tire T. By bending so as to come into contact with the shoulder of the tire T, it can be attached to the outer peripheral surface of the tire T without any gaps. Furthermore, the grooves 12 allow each anti-slip piece 3 to be bent easily at both ends, so that it can be securely attached to the outer peripheral surface of the tire T.

When the anti-slip device S is mounted on the tire T in this way and the tire T is driven on a snowy road, etc., as shown in FIG. At the beginning, the center of the tread 3A touches the ground next to the sloped part 3B on one side, and then the sloped part 3C on the other side contacts the ground, allowing the tire T to drive and rotate without slipping. Therefore, the rising height of the tire T at the starting point A of ground contact can be lowered, and one side inclined portion 3B can be successively lowered.
Since the tire T rides along the , the amplitude of the vibration can be made gentler. After this, the other side inclined part 3C
Accordingly, after the distance between the tire T and the road surface becomes smaller, the tire T contacts the ground from the contact end B.

As described above, by forming the sloped portions 3B and 3C on one side and the other side on the tread 3A near the ends of the anti-slip piece 3 in the longitudinal direction of the ropes 1 and 1A, the anti-slip piece 3 is able to contact the ground. When the tire T rides on the anti-slip piece 3, the impact caused by the height of the ride is reduced, and the amplitude of vibration can be made gentler.

Furthermore, according to the one side slope part 3B, the tire T
rises slowly, so there is no significant vibration.
Therefore, even if the wall thickness at the center of the tread 3A is increased, no large vibration occurs, and as a result, even if the thickness of the anti-slip piece 3, which is proportional to the anti-slip force, is increased, vibration and noise can be reduced. Conversely, in the case of vibration and noise of the same level as before, the anti-slip force can be significantly improved.

Furthermore, by providing the one side and the other side sloped portions 3B and 3C on both sides of the anti-slip piece 3, vibration and noise can be reduced not only when the anti-slip piece 3 touches the ground but also when it leaves the road surface.

Furthermore, since the narrow constricted portion 13A is formed in the center of the anti-slip piece 3, when a bending force is applied to one end of the anti-slip piece 3 during braking, etc., the narrow constricted portion 13A is slightly narrowed. When the anti-slip piece 3 is bent, only one end of the anti-slip piece 3 rotates, preventing the anti-slip piece 3 from twisting, reversing, etc., and the contact surface of the anti-slip piece 3 can be kept in contact with the road surface at all times. The pins 11 and 11A touch the road surface, allowing stable driving.

Moreover, in a tire slip prevention device in which anti-slip pieces 3 are arranged in a ladder-like manner between ropes 1 serving as cable members, each of the anti-slip pieces 3 is provided with a plurality of spike pins 11, 11A, and these spikes By connecting the pins 11, 11A with the wire 10, which is a connecting cable, the compressive force and torsional force applied to the spike pins 11, 11A can be dispersed, and the spike pins 11, 11A can be prevented from coming off. Compressive strength of the anti-slip piece 3 itself,
The tensile strength and torsional strength are also improved, making it possible to provide a robust anti-slip device for tires.

Furthermore, by connecting the ends of the wires 10, which are the connecting cables, to the rings 8, 9 of the locking holes 6, 7, the anti-slip pieces 3, the spike pins 11, 11
The force applied to A is the wire 10, rings 8, 9,
It can be transmitted and dispersed to the connecting fitting 2 and the rope 1, and compressive stress, torsional stress, etc. can be improved. Furthermore, by providing a wide mounting seat 11B at the base of the cylindrical pin main body of the spike pins 11, 11A, the flexible elastic material such as rubber, which is a member of the anti-slip piece 3, and the spike pins 11, 11A can be easily connected to each other. The fixed area becomes large. Furthermore, the mounting seat 11B creates a locking surface with the flexible elastic material, which can resist a force that tends to move further toward the outer surface, such as centrifugal force.

FIG. 6 shows a second embodiment of the present invention, and the same parts as in the first embodiment are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

Starting point A of the anti-slip piece 3 attached to the tire T
An inclined portion 3D is formed on the entire surface of the tread 3A so that the side thereof is thin and the grounding end B side is thick.

Therefore, during running, the tire T rides on the anti-slip piece 3 at the same time that the starting edge A touches the ground. The step at this time becomes a height of a thin wall on the side of the ground contact start point A, and as a result, the amplitude can be reduced.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made, for example, by appropriately changing the means for connecting the rope and the anti-slip piece.

[Effects of the invention] The present invention connects anti-slip pieces made of an elastic material such as rubber or synthetic resin to the tire using cables and connecting fittings at appropriate intervals, and also provides spike pins on the anti-slip pieces. The spike pin is formed into a cylindrical shape, its base is embedded in the anti-slip piece, a large-diameter mounting seat is formed in the base, and a through hole is formed in the circumferential surface of the spike pin, and the through hole is formed in the circumferential surface of the spike pin. The end of the connecting cable that penetrates the hole is connected to the end of the anti-slip piece by wrapping it around the outer circumferential groove of a ring provided separately, and the engaging part that is inserted into the ring is connected to the connecting cable. an inclined part provided on the metal fitting, which forms a narrow constriction in the center of the anti-slip piece, and thins the ground contact start end side and the ground contact end side of the tread of the anti-slip piece, and slopes in the longitudinal direction of the cable body; By providing this, it is possible to reduce the degree of vibration of the tire at the starting end of the anti-slip piece's contact with the ground, and it is possible to reduce vibrations and noise caused by attaching the anti-slip device to the tire.

Moreover, the spike pins 11, 11A can be firmly attached by the connecting rope body 10, and the strength of the anti-slip piece 3 can also be improved, allowing stable driving with the spike pins 11, 11A always in contact with the road surface. An anti-slip device for tires can be provided.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of the present invention, in which FIG. 1 is a sectional view, FIG. 2 is a partially cutaway front view, FIG. 3 is a partially cutaway plan view, and FIG. Figure 4 is a perspective view of the anti-slip device installed on the tire, and Figure 5 is a perspective view of the anti-slip device installed on the tire.
FIG. 6 is a sectional view showing a second embodiment of the present invention. 1,1A...rope (cord body), 2,2A...
Connecting fitting, 2C... engaging portion, 3... anti-slip piece,
3A...Tread, 3B, 3C, 3D...Slanted portion, 8, 9...Ring, 10...Connecting cable body,
11, 11A...spike pin, 11B...attachment seat, 11C...through hole, 13A...constriction, A...ground contact starting end, B...ground contact end, T...tire, S...skid prevention device.

Claims (1)

[Scope of utility model registration request] A non-slip piece made of an elastic material such as rubber or synthetic resin is connected to the tire at appropriate intervals using a cable and a connecting fitting, and a spike pin is provided on the non-slip piece, and the spike pin is formed into a cylindrical shape. , the base of which is embedded in the anti-slip piece, a large-diameter mounting seat is formed in the base, a through hole is formed in the circumferential surface of the spike pin, and a connecting cable is inserted through the through hole. The end of the body is connected to the end of the non-slip piece by wrapping it around the outer circumferential groove of a ring provided separately, and the connecting fitting is provided with an engaging part to be inserted into the ring, and the end of the non-slip piece A narrow constriction is formed in the center, and the tread of the anti-slip piece is thinned at the ground contact start end side and the ground contact end side, and is provided with an inclined part that slopes in the longitudinal direction of the cable body. Anti-slip device for tires.