JPH0376246B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an anti-slip tire wheel that is attached to and detached from the side surface of a tire wheel of an automobile or the like.

<Conventional technology> To prevent tires from slipping when driving on snowy or frozen roads, tire chains,
Spiked tires are currently used, but there are many problems with both of them, and there is no effective alternative, so the current situation is that spiked tires have no choice but to be used.

<Problems to be Solved by the Invention> For example, when using a tire chain, normal tires may be used, but each time they are attached or detached, the vehicle body must be jacked up alternately, and it is not possible to attach them smoothly, and the tires may be worn while driving. It also generates abnormal noise and vibration, and is not very effective in preventing skidding. In addition, when using spiked tires, it is necessary to prepare the spiked tires separately in addition to the standard ones, and to attach and detach them, it is necessary to jack up the car body, loosen and tighten the hub nuts, and it is not possible to easily attach and detach them as necessary. I can't. In particular, spiked tires
The damage to road surfaces and the environmental pollution caused by the dust has developed into a social problem, and improvements are strongly required.

<Means for Solving the Problems> The present invention has been provided to solve the above-mentioned conventional problems, and is composed of a hollow ring that can be attached to and detached from the side surface of a tire wheel using bolts or the like. A body, a plurality of spokes that are guided by the hollow ring body so as to be movable in the radial direction and have protruding plates at their tips, and the plurality of spokes are connected in series and the spokes are pulled in the direction of the rotation center of the hollow ring. A circular-shaped spring that exerts force,
A rubber cover that is fixed to the outer periphery of the hollow ring body and surrounds the tips of the spokes; a tube that is housed in the hollow of the hollow body and comes into contact with the rear end of the spoke; and a tube that supplies and discharges air pressure to and from the tube. It is equipped with an air valve.

<Function> According to the present invention, protruding plates at the tips of a plurality of spokes provided on a hollow ring body attached to the side surface of a tire wheel with bolts are pressed by an ammunition member, so that the protruding plates are pressed against a snowy road or frozen road surface. It makes contact with the ground and provides a non-slip effect.

<Examples> Examples of the present invention will be described below based on the drawings. In FIGS. 1 and 2, reference numeral 10 indicates an automobile tire mounted on a wheel 17. In FIG. The anti-slip wheel according to the present invention is removably attached to the wheel 17 of the tire 10.
The structure includes a hollow ring body 16 made up of an inner case 1 and an outer case 2, a plurality of spokes 4 guided into spoke grooves 9 so as to be movable in the radial direction (radial direction) in the hollow ring body 16, and It consists of a protruding plate 18 provided at the tips of the spokes 4, and an elastic member for pressing the spokes 4 in the outer radial direction is provided in the hollow portion of the hollow ring body 16. This elastic member may be a spring (not shown), but as shown in the figure, a rubber tube 3
is installed internally, and an air valve 8 is installed inside this rubber tube 3.
A suitable structure is to fill the spokes with appropriate air pressure through the spokes, bring the rear ends of the spokes 4 into contact with the rubber tubes 3, and press them elastically with the air pressure of the rubber tubes 3.
In addition, 5 is a rubber cover surrounding the tips of the spokes 4, 6 is a circle-shaped spring that connects a plurality of spokes 4 in series, 11 is an oil groove that supplies oil to the sliding part of the spokes 4, and 12 and 13 are Inner case 1
The connecting bolt between the outer case 2 and the outer case 2 is shown.

The hollow ring body 16 configured as described above is attached concentrically to the outer surface of the wheel 17 of the tire 10.
The sub-ring 14 may be fixed directly to the wheel 17 with the bolt 7, or as shown in the figure, the sub-ring 14 is fixed to the wheel 17 in advance with the bolt 15, and the hollow ring body 16 is attached to the sub-ring 14 with the bolt 7. It is twisted and fixed.

Next, the operation of the present invention with the above configuration will be explained. First, the air pressure of the rubber tube 3 is adjusted depending on the road surface condition similar to that of the tire 10. For example, when the ice is hard or there is a lot of snow, the air pressure is increased when it is desired to force the protrusion plate 18 to bite into the ice more strongly. As a result, the spokes 4 are pushed out in the outer radial direction with a strong force. However, since the amount of protrusion is stopped by the inner circles of the inner case 1 and the outer case 2, only the thickness of the protrusion plate 18 protrudes from the diameter of the ground contact surface of the tire 10.

When the tire 10 is crushed due to the weight of the car or the unevenness of the road surface, the spokes 4 move backward according to the amount of deformation of the tire 10, as shown in FIG.
The rubber tube 3 is deformed by pressing, but the air pressure increases accordingly, and the contact pressure with the road surface increases even more. At this time, there are at least two protruding plates 18 that touch the ground to prevent rotation and lateral slipping of the tire 10.

Further, the spokes 4 are always pushed out in the outer radial direction by the rotational centrifugal force of the tire 10, but if there is a certain amount of pressure inside the rubber tube 3, each spoke will be arranged on the same circumference.

When the anti-slip device is no longer needed after passing through an icy or snowy road, the hollow ring body 16 can be easily removed from the wheel 17, but if the air pressure inside the rubber tube 3 is discharged using the air valve 8, the spring 6 can be removed. Since the spokes 4 are pulled toward the center of rotation, the vehicle can run even when the hollow ring body 16 is attached to the wheel 17. At this time, the protrusion plate 18 does not come into contact with the road surface,
Even if they do come into contact, the contact pressure will not be strong enough to scrape the road surface like spiked tires.

<Effects of the Invention> As described above, according to the present invention, the ground contact pressure of the protrusion plate that bites into the frozen road surface or snowy road is adjusted by the air pressure of the tube housed in the hollow ring body that is detachable from the tire wheel. This allows adjustment using commercially available tire pressure pumps, gas stations, etc., and eliminates the need for hydraulic circuits and hydraulic control devices compared to conventional hydraulic cylinders, reducing weight and cost. is reduced.

Furthermore, even if the air pressure in the tube is discharged, the spokes are pulled toward the center of rotation of the hollow ring by the circular spring, so the protruding plates do not protrude and damage the road surface due to centrifugal force while driving.

Furthermore, the rubber cover surrounding the tips of the spokes prevents foreign matter from entering the sliding portion of the spokes, ensuring smooth sliding of the spokes.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view of the present invention mounted on a tire wheel, FIG. 2 is a front view, and FIG. 3 is a sectional view of the present invention in an operating state. 3... Rubber tube, 4... Spoke, 7... Bolt, 8... Air valve, 10... Tire, 16... Hollow ring body, 17... Wheel, 18... Projection plate.

Claims (1)

[Claims] 1. A hollow ring body that can be attached to and detached from the side surface of a tire wheel using bolts, etc., a plurality of spokes that are guided by this hollow ring body so as to be movable in radial directions and have protruding plates at their tips, and a circle-shaped spring that connects a series of spokes to draw and bias the spokes toward the center of rotation of the hollow ring; a rubber cover fixed to the outer periphery of the hollow ring body and surrounding the tips of the spokes; and a rubber cover that surrounds the tips of the spokes; 1. A non-slip wheel for a tire such as an automobile, characterized in that the wheel is provided with a tube which is housed in a hollow space and which the rear ends of the spokes abut, and an air valve which supplies and exhausts air pressure to and from the tube.