JPH09240221A - Snowy/icy road surface skid preventing stud - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a skid on a snowy/icy road surface and to prevent generation of dust on the toad surface which is not snowy/icy. SOLUTION: A snowy/icy road surface skid preventing stud is constructed of a stud 2, in which an extensible liquid container filled with a solution possessing a freezing temperature as low as water is arranged in the rear end, and a stud container 3, in which the stud 2 is stored in an internal pore 3a and an opening whose tip can be projected to the outside is formed in the position corresponding to the tip of the stud 2 in the internal port 3a. An opening is arranged in a tread body so as to bury the stud, and when the solution is transformed from liquid to solid in freezing and increased in volume, the tip of the stud 2 is protruded from the opening of the stud container 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stud provided on a tire for a vehicle, a shoe for a snowy road or the like in order to prevent gliding on a snowy or frozen road surface.

[0002]

2. Description of the Related Art Vehicles that run on snowy or frozen roads in cold regions are equipped with snow tires or spike tires before 1990, and spikeless tires thereafter to prevent slipping. Spike tires are banned because when running on a road surface that is not covered with snow or freezing, metal studs protruding from the tire surface will damage the road surface finely and generate dust, instead, it will also be flexible even at freezing points. Spikeless tires that use special rubber that does not lose its shape and have a modified groove shape are widely used. When a person walks on snowy or frozen roads, wear snow shoes with a deep groove formed on the outer surface of the sole, or put a non-slip cover on the outer surface of the bottom of ordinary shoes. There is.

[0003]

However, the spikeless tire for preventing the gliding on the snowy and snowy road surface does not have the effect of preventing the sliding on the spiked tire. In particular, on a frozen road surface, the hard and smooth frozen road surface cannot be caught, and the vehicle glides. On frozen roads, it is necessary to overcome and bite into hard frozen roads and catch frozen roads like spike tires before the prohibition. With conventional spike tires,
The studs are always protruding from the ground contact surface of the tire.
However, when repeatedly driving alternately on snow-covered or frozen road surfaces and on uncovered road surfaces, or on days with and without snow at the time of the season, it is possible to save tires and tires by changing tires. I was driving on a road surface with spiked tires. Similarly, in the case of a person walking, on a snowy or frozen road surface, the user always walks while paying attention to slipping and falling.

The present invention has been made to solve the above problems, and prevents gliding on a snowy or frozen road surface, and does not generate dust even on a snowy or frozen road surface. It is intended to provide an anti-skid stud.

[0005]

In order to achieve the above object, the ice and snow road surface skid prevention stud according to the present invention is constructed as follows. That is, a stud having a stretchable liquid container filled with a solution having a freezing temperature equivalent to that of water at the rear end, and a stud built into the inner cavity, where the tip of the stud is located, The tip of the stud container is formed with an opening capable of projecting to the outside, and is embedded by providing an opening in the grounding body, and the solution changes from a liquid state to a solid state at the time of freezing to cause volume expansion, The tip of the stud is projected from the opening of the stud container.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the ice and snow road surface skid prevention stud according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a structural sectional view showing a state in which the icy / snowy road surface sliding stud according to the present invention is embedded in a grounding body, and FIG. 2 is a structural sectional view showing a state during traveling on an ice / snowy road surface. In the figure, reference numeral 1 is a stud for preventing gliding on ice and snowy road surfaces, and the stud 1 for preventing sliding on ice and snowy road surfaces is composed of a stud 2, a stud container 3 and a liquid container 4. The stud 2 is an elongated substantially conical steel member with a sharp tip cut off. The stud 2
The liquid container 4 is provided at the rear end 2b. The liquid container 4 has a substantially hemispherical stretchable film member 4a.
However, the periphery of the circular end portion is joined to the periphery of the rear end portion 2b of the stud 2 in a liquid-tight state, and is constituted by the film member 4a and the rear end portion 2b of the stud 2. The stud container 3 is a substantially frustoconical container having an internal cavity 3a in which the stud 2 having the liquid container 4 is axially movable, and the tip 2a of the stud 2 on the upper side of the truncated cone is formed. An opening 3b is provided at the position where the tip 2a can project to the outside by a predetermined length.

In the stud 1 for preventing ice and snow road surface slippage thus constructed, the liquid container 4 is filled with the solution 5 having a freezing temperature equivalent to that of water, and the rear end portion 4b of the liquid container 4 is the stud container. It is fixed to the inner lumen 3a of the No. 3 unit. The solution 5 reversibly changes from a liquid state to a solid state or vice versa due to a temperature change having a freezing temperature as a boundary. When the temperature is higher than the freezing temperature, it is in a liquid state, and as shown in FIG.
The tip end 2a of the stud 2 is pulled into the opening 3b of the stud container 3 and is kept pulled by the contracting force of the film member 4a. When the solution 5 becomes below the freezing temperature, it solidifies and the volume expands, and as shown in FIG.
The tip 2a of the stud 2 is pushed out from the opening 3b of the stud container 3 and protrudes for a predetermined length, and the protruding state is fixed. The plurality of ice-and-snow road surface skid prevention studs 1 configured and functioning as described above are provided at appropriate intervals on the grounding body 6 of the tire of the vehicle or the shoe for snowy roads, and the opening 3b of the stud container 3 is grounded. It is embedded so as to open to the outside of the body 6 and be located within the ground surface 6a.

The stud 1 for preventing snow and ice road surface sliding is provided with the grounding body 6.
When traveling or walking on snowy or frozen roads with tires or snow road shoes buried in,
At a temperature lower than the freezing temperature of the ice and snow road surface, the solution 5 is cooled and solidified, and the volume is expanded. As a result, as shown in FIG. 2, the tip 2a of the stud 2 is extruded from the opening 3b of the stud container 3 and protrudes for a predetermined length, and the protruding state is fixed. That is, a protrusion is generated on the ground surface 6a,
It becomes the state of the conventional spike tire. Therefore, the tip 2a of the stud 2 can bite into a snowy or frozen road surface to catch the road surface, and can run or walk without gliding.

Next, when the ice-snow road surface changes to a road surface without ice-snow, the solution 5 loses the ice-snow that cools to below the freezing temperature, and the temperature rises due to the running frictional heat of the tires or the body temperature in the case of shoes, resulting in solidification. Liquefy from a shape. Solution 5 is
Volume decreases by changing from solid state to liquid state,
The liquid container 4 whose rear end 4b is fixed to the inner cavity 3a of the stud container 3 contracts. The contraction force of the liquid container 4 and the stud 2
The stud 2 is drawn into the inner cavity 3a of the stud container 3 when a load of a car or a human body is applied to the tip 2a of the stud 2. The tip 2a of the stud 2 is a grounding surface 6a of the grounding body 6.
The liquid container 4 retracts within the contracted state and is always attracted to the contracted liquid container 4, and the ground surface 6a has no protrusion. That is, the tire becomes a spikeless tire or a normal tire. Therefore, the road surface will not be finely damaged and dust will not be generated.

[0010]

EFFECTS OF THE INVENTION The ice and snow road surface skid prevention stud according to the present invention having the above-described structure can obtain the following effects. That is, with a stud having a stretchable liquid container filled with a solution having a freezing temperature equivalent to that of water at the rear end, and the stud is incorporated in the inner cavity,
A stud container in which the tip of the stud is formed with an opening through which the tip of the stud can project to the outside is formed at a position where the tip of the stud of the inner cavity is located. Tires or shoes with icy snow road anti-skid studs embedded in the ground contact surface will have projections on snowy or frozen road surfaces to prevent gliding and It does not damage the road surface and does not generate dust.

Further, since the stretchable membrane member of the liquid container is fixed to the inner cavity of the stud container, the stud will have the inner cavity of the stud container when the road surface changes from ice and snow to a road without ice and snow. While being retracted and retracted, it is always attracted and the state without protrusions is maintained.

Therefore, when the vehicle alternately and repeatedly runs on snow-covered or frozen road surfaces and on roads not covered with snow, or on the day when there is snowfall and the day when there is no snow at the time of the season, the studs are used on snow-covered or frozen road surfaces. Does not project and slide, and the stud does not project on a road surface that is not covered with snow or icy, does not damage the road surface, does not generate dust, and allows continuous running without tire replacement. Similarly, in the case of walking by a person, it is possible to walk with peace of mind on a snowy or frozen road surface without slipping, and to walk normally on a snowy or frozen road surface.

[Brief description of drawings]

FIG. 1 is a structural cross-sectional view showing a state in which a stud for preventing snow and ice road surface sliding according to the present invention is embedded in a grounding body.

FIG. 2 is a structural cross-sectional view showing a condition of the stud for preventing gliding on ice and snowy roads according to the present invention during traveling on the ice and snowy roads.

[Explanation of symbols]

 1 Stud for preventing snow and ice road surface sliding 2 Stud 2a Tip 3 Stud container 3a Lumen 3b Opening 4 Liquid container 4a Membrane member 4b Rear end 5 Solution 6 Grounding body

Claims (2)

[Claims] 1. A solution (5) having a freezing temperature equivalent to that of water (5)
The elastic liquid container (4) filled with the liquid is attached to the rear end (2
b) and the stud (2) provided in b), and the stud (2) is built in the lumen (3a), and the stud (2) of the lumen (3a) is located at a position where the tip (2a) of the stud is located. Tip (2
a) is composed of a stud container (3) having an opening (3b) capable of projecting to the outside, and the solution (5) changes from a liquid state to a solid state upon freezing and volumetrically expands, A stud for preventing gliding on ice and snow roads, characterized in that the tip (2a) of the stud (2) projects from the opening (3b) of the stud container (3). 2. A rear end portion (4b) of the stretchable membrane member (4a) of the liquid container (4) is the stud container (3).
The solution (5) is configured by being fixed in the inner cavity (3a) of
Is changed from a solid state to a liquid state at the time of thawing and its volume is reduced, whereby the tip end (2a) of the stud (2) retracts into the inner cavity (3a) of the stud container (3). The stud for preventing ice and snowy road surface slippage according to claim 1.