JPS60963Y2 - spike tires - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a spiked tire, and more particularly to a spiked tire in which spikes can be freely and instantaneously inserted and removed.

When it snows or the roads are frozen, wrap tire chains or
/- Safe driving ability cannot be achieved unless you replace the multi tires with spiked tires.Once you change to spiked tires, it is extremely troublesome to remove and replace them, and there is no guarantee that you will encounter snowfall at any time. It is normal to always wear spiked tires.

For this reason, when driving on roads that have been completely plowed, where spiked tires are not needed, or on regular roads that are not covered with snow or ice, not only do they make noise and the steering wheel is heavy when driving, but also the roads and roads. Because the upper markings are scraped off with sharp spikes, the road is seriously damaged and road repair costs are enormous.

Moreover, when using spiked tires, fuel consumption deteriorates, which is not desirable from an energy saving perspective.Furthermore, it is difficult to replace spiked tires smoothly, so slip accidents and traffic jams occur frequently during sudden snowfall, and snowfall season As the road approaches, drivers have a hard time deciding when to change tires.

However, if the spikes can be freely protruded from the tire at the moment of need, driving safely in the snow with spiked tires, and the spikes can be retracted when the spikes are not needed, these problems can be solved. Solve everything.

This invention was made in view of the above points, and the purpose is to provide a spiked tire that allows spikes to protrude instantly by removing air from the outer circumferential chamber divided within the tire. In this method, a flat tube is arranged along the inner circumferential surface of the tire, and a number of constrictions are formed at appropriate intervals so that a part of the outer circumferential surface of the flat tube is fixed to the inner circumferential surface. A spike rivet is arranged in the constriction part and faces toward the ground contact surface of the tire, and a hole for inserting the spike rivet is formed in the ground contact surface of the tire in order to allow the spiked tire to enter and exit the ground contact surface in correspondence with the spike rivet. death,
The rear end of the spike stud is formed into a large diameter umbrella portion, and
An elastic member is provided within the constricted portion so as to be elastically mounted between the umbrella portion and the inner circumferential surface of the tire, and an air inlet communicating with the outside of the tire extends from the flat tube.

Preferred embodiments of this invention will be described in detail below with reference to the accompanying drawings.

In the cross-sectional view of the tubeless tire 10 shown in FIG. 1, the bottom surface of the tire 10 includes a carcass (not shown) with little elongation in the circumferential direction and the width direction, as usual.

A hole 18 for a spike rivet and a spike rivet 20 are provided which communicate from the ground contact surface 16 of the tire 10 to the inside of the tire 10 while avoiding the carcass.

The umbrella part 24 of the end of the spike stud 20 inside the tire 10 is arranged so that the umbrella part 24 of the spike stud 20 presses the flat tube 22 inwardly along the inner surface of the tire 10 and forms an outer peripheral chamber. The bottom surface 14 of the constricted portion 12 provided as
is fixed to.

The constricted portion 12 is formed so that a part of the outer circumferential surface of the flat tube is integrated with the inner circumferential surface, and is elastic so that it is elastically fitted between the umbrella portion 24 of the spike stud 20 and the inner circumferential surface of the tire. A member 26 is provided within the waist.

An air injection pipe (not shown) for injecting air into the air chamber 32 of the flat tube 2:2 is provided, and this pipe is communicated with the outside of the tire 10 to form an air injection port. It is arranged close to the air inlet 28 of the inner circumferential chamber 30 partitioned by the flat tube 22 .

Incidentally, even if the cap portion 24 of the spike rivet is not fixed to the constricted portion 12, since the elastic member 26 is provided inside the constricted portion 12, a similar effect should be avoided.

Next, a method of using the spiked tire according to the present invention will be described.

First, as usual, fill the inner circumferential chamber 30 with sufficient air necessary for driving the vehicle from the air inlet 28, and also fill the flat tube 22 with air so that the air pressure is the same as that of the inner circumferential chamber 30. is the contact surface 16 of the tire 10
Make sure it doesn't stick out.

This air pressure can prevent the flat tube 22 from shifting or moving in the left-right direction, providing double cushioning and tire puncture prevention effects.

When it becomes necessary to use spiked tires during sudden snowfall, the air inlet of the flat tube 22 (not shown)
When the air is removed from the tire, the air chamber 32 and the elastic member 26 are crushed due to the high air pressure in the inner circumferential chamber 30, and the spike studs 20 protrude from the ground contact surface 16 of the tire, producing the effect of a spiked tire.

When the spike stud is no longer needed, air is immediately injected into the flat tube 22 to expand the air chamber 32 and the spike stud 20 is stored within the tire 10.

Further, the spike stud 20 can also be housed within the tire 10 by sending air from the inner circumferential chamber 30 into the flat tube 22 using a short hose.

Note that the elastic member may be a spring instead of a urethane sponge, and the elastic member effectively prevents the spike rivet from swinging or popping out due to centrifugal force.

Further, the above embodiments are not limited to tubeless tires, but may also be tires having a tube inside the tire.

In this way, according to the present invention, the flat tube with spikes is simply contracted in order to make the spikes protrude from the tire, and a normal tire can be instantly changed to a spiked tire, and a spiked tire can be changed to a normal tire. It is also easy to change.

By adjusting the degree of contraction of the flat tube with spikes, you can select the optimal spike condition depending on the road conditions, such as the first snowfall, midwinter, and thaw season, and reduce the loss of spikes. It can also be decreased.

It can also improve fuel efficiency, noise, and drivability.

Furthermore, the spike studs can be reliably projected, and since the tire has a double structure, the cushioning properties are good and punctures can be prevented.

Furthermore, by arranging a flat tube inside a normal tire, it can be improved, and manufacturing is easy and costs can be reduced.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, in which FIG. 1 is a cross-sectional view of a spiked tire, and FIG. 2 is a partially enlarged sectional view of essential parts of the spiked tire. 10... Tire, 12... Flank part, 1
4... Bottom surface, 16... Ground plane, 18.
...Hole, 20...Spike stud, 22.
...Flat tube, 24 ... Umbrella section, 26
......Elastic member, 28...Air inlet,
30... Inner peripheral chamber, 32... Air chamber.

Claims (1)

[Scope of utility model registration request] A flat tube is arranged along the inner circumferential surface of the tire, and a number of constrictions are formed at appropriate intervals so that a part of the outer circumferential surface of the flat tube is fixed to the inner circumferential surface. , disposing a spike stud facing toward the ground contact surface of the tire, and forming a hole for inserting the spike stud in the ground contact surface of the tire so as to allow the tip of the spike stud to enter and exit the contact surface of the tire, corresponding to the spike stud; The rear end of the spike stud is formed into a large-diameter umbrella part, and an elastic member is provided in the constricted part so as to be elastically mounted between the umbrella part and the inner circumferential surface of the tire. A spike tire characterized by an extended air inlet that leads to the air.