JPH0612112U - Spike tire - Google Patents

Abstract

(57) [Summary] [Purpose] When snow or freezing, the spikes are projected to prevent the wheels from slipping, and when there is no snow or ice, the spikes are stored to prevent the road from being scraped. [Structure] A large number of air cylinders having spikes (27) attached to their tips arranged radially around an axle are attached to tires, and the air cylinders are taken in and out according to a command from the inside of the vehicle to serve the purpose.

Description

[Detailed Description of the Invention] (a) Industrial Application Field This new model relates to the improvement of spike tires.

 (B) Conventional technology Conventional spike tires have spikes embedded in the periphery of the tires, which serve as a non-slip on snow and ice, but on roads such as asphalt where there is no snow or ice, these spikes Roads are shaved and dust pollution occurs.

(C) Problems to be solved by the new plan This new plan prevents spikes from protruding by putting spikes on snow and ice, and on roads without snow or ice to prevent spikes from being cut. To do.

(D) Means for Solving the Problems This new plan will be described with reference to the drawings. FIG. 1 is a conceptual diagram of the new plan, and FIG. 2 is an enlarged cross-sectional view taken along line AA of FIG. The spike protruding state diagram, FIG. 4, shows the spike retracted state diagram of the AA sectional enlarged view.

 There are 3 switches installed in the car. When you press the spike protruding switch, the air cylinder 1 operates and the cylinder protrudes. A roller 18 is attached to the tip of the air cylinder 1, and when the tire makes one revolution, the cylinder 4 is pushed down. The ventilation hole 7 attached to the cylinder 4 moves toward the axle and comes to the position of the inflow port 21 to allow ventilation. At the same time, the oil 17 at the bottom of the cylinder 4 is compressed, and the hydraulic pressure pushes up the cylinder 5, so that the ventilation hole 8 at the bottom of the cylinder 5 comes to the exact same position as the inflow port 21 for ventilation.

Next, when the switch for the pump is pushed in the vehicle, the air cylinder 3 for the pump operates and projects, and the roller 19 at the tip of the air cylinder 3 causes the cylinder 6 of the pump to move toward the axle every time the tire makes one revolution. The air that has entered the pump from the air inlet 23 is compressed, the air valve 14 is pushed open, and the air is passed through the vent 7, the inlet 21, the vent 8, the inlet 24, and the inlet pipe 25. It flows into each cylinder 26 and causes each spike to project. When the pump cylinder 3 is separated from the roller 19 due to the rotation of the tire, the pump cylinder 6 is pushed upward by the spring 13. At that time, since the valve 14 is closed, the air in the cylinder 26 does not flow backward. New air flows in from the air inflow port 23, and by the next rotation of the tire, air again flows into the cylinder 26, and the air pressure in the cylinder 26 gradually increases. However, when the pressure exceeds a certain constant pressure, the pneumatic safety valve 15 operates and excess air is discharged from the overpressure air discharge port 12. The air pressure is adjusted by the air pressure adjusting screw 16 so that the air in the cylinder is kept at a constant pressure. When the pressure in the cylinder reaches a certain level, switch off the pump. Next, when the road is not frozen or covered with snow, when the spike storage switch is turned on, the air cylinder 2 operates and projects. A roller 20 is attached to the tip of the air cylinder 2, and the cylinder 5 is pushed down when the tire makes one revolution.

The cylinder 5 is provided with a ventilation hole 9 so that when the cylinder 5 moves in the direction of the axle, it can come to the position of the inflow port 22 to ventilate. Further, the exhaust hole 10 comes to the position of the vent hole 21. When the air cylinder 5 is pushed down, the oil at the bottom of the cylinder is compressed, and the oil pressure raises the cylinder 4. At that time, the ventilation hole 7 of the cylinder 4 comes to the exact same position as the inflow port 22, and the air compressed by the pump pushes each spike 27 toward the axle through the ventilation hole 9 and the inflow port 28. The air in the cylinder 26 is discharged to the outside from the exhaust port 11 through the inflow port 24 and the exhaust hole 10.

Each time the tire rotates, air is pumped from the pump to the inlet 28, and the air safety valve operates when a certain pressure is reached. At this time, if the pump switch is turned off, the spike 27 is retracted toward the axle with a certain constant pressure. If the air pressure that presses the spike 27 is stronger than the centrifugal force that acts due to the rotation of the tire, the spike 27 will be retracted and the tip of the spike will be inside the tire outer circumference of the car, so there will be no direct contact with the road. .

(E) Action By switching three switches installed in the vehicle, spikes can be projected and stored freely, and tires can be adapted to the road conditions. This model uses an air cylinder installed at the mudguard cover of the tire to switch between the air pump and the vent hole.However, due to the direct connection between the pipe installed inside the axle and the spike tire, the air pressure inside the pipe or The hydraulic pressure may be adjusted to allow spikes to retract and retract.

(F) Example The spike tires of the present invention are closely attached to the outer side, the inner side, or both sides of the automobile tire.

(G) Effect of the new model As explained above, this new model allows the spikes to be easily taken in and out by switching the switch inside the vehicle, and when the road is snowy or frozen, the spikes are projected to prevent the vehicle from slipping. When the road is not covered with snow or frozen, the spikes are stored so that the road is not scraped and dust pollution does not occur.

[Brief description of drawings]

Fig. 1 is a conceptual diagram of this new model. Fig. 2 is a sectional view showing a spike projecting state of an AA sectional enlarged view of Fig. 1. Fig. 3 is a BB sectional enlarged view of Fig. 2. FIG. 4 is a sectional view showing a spike protruding state diagram of FIG. 4 is a sectional view showing a spike storing state diagram of an AA enlarged sectional view.

Claims (1)

[Scope of utility model registration request] A spike is a spike tire that can be easily projected and stowed from the inside of the vehicle by air pressure or hydraulic pressure and can be attached by contacting with a normal tire, or a tire integrated with a normal tire.