JPS62157813A - Spike for vehicle tire - Google Patents

Abstract

PURPOSE:To prevent the damage of a road surface by movably fitting the tail part of a shank into a case type flange, and retracting said shank into said flange by compressing a spring, etc. when a pressure above a certain value is applied to the head part of said shank. CONSTITUTION:A flange 1 is formed into a hollow thin-walled cylindrical case shape, while round holes 21, 31 are provided on both of its top and bottom faces 2, 3 respectively. A shank 4 which is fitted into the flange 1 through the holes 21, 31, is formed into a cylindrical shape from the head part 5 having a tip 51 to the tail part 6 on the opposite side, and the end edge 61 of the tail part 6 is projected out in an annular form toward the outer periphery. And, a semispherical hole 7 is provided from the center of the tail part 6 toward the inner part of the shank 4, while right and left springs 8 are provided in said hole 7 to press the shank 4 from the flange 1 toward the head part 5. Thereby, when a pressure C above a certain value is applied to the head part 5, the shank 4, together with the tip 51, can be retracted into the flange 1 to a defined length.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention improves snow tires attached to automobile tires to ensure safe driving and braking on icy and snowy roads, and to prevent wear and tear on the paved road surface. The aim is to prevent the occurrence of so-called car dust pollution as much as possible, and to maintain the promotion of industrial activities and make life more comfortable during the northern winter season and before and after it.

``Prior Art'' Various improvements to spikes have been announced up to now, but the method of retracting them into the rubber layer when they hit a hard paved road surface, but not retracting on icy and snowy roads, has not been studied in any way, from manufacturing to mounting, pulling out, and replacing them. Although it seems certain that this is the case, I couldn't find anything that seemed to be relatively simple and inexpensive.

``Problems to be solved by the invention'' It can be said that it is extremely difficult to improve spikes by relying solely on their material, shape, additions, etc. In other words, in terms of materials, as the temperature difference between the surrounding rubber layer becomes sudden and large, it becomes difficult to respond quickly, and in terms of shape and additions, it is necessary to change the structure of the tire, such as mounting holes, and when the tire is pulled out and replaced, additions may be removed. It seems that there is a tendency for troubles to occur, such as the tendency to remain in the holes.

``Means for Solving the Problems'' The present invention separates the conventionally integrated spike into two parts, the shank and the flange, and enables the shank to move for a predetermined length within seven lunges. A spring is installed between the shank and the flange so that when the shank hits a hard paved road surface, it retracts into the flange by a predetermined length, and when it does not, it is pushed out from the flange by a predetermined length to form an approximately conventional shape.・The idea is to install a strut horn mechanism that restricts movement to a predetermined length by arranging rubber or the like.

``Function'' On general roads where there is a mixture of compacted snow or frozen surfaces and exposed paved roads, the shank is likely to be moved in and out of the flange quickly and frequently over a specified length, so the resistance friction from the rubber layer surrounding the shank also increases. Become a dog and win. To avoid this, the shank is tapered so that it can easily be retracted into the flange and pushed out of the flange.

Special considerations have been made to the shape, attachment, composition, etc. of springs, rubber, etc., so as to increase their acting force and durability.

``Example'' ■The present invention first involves making a so-called flange body (hereinafter simply referred to as flange) into a kind of box shape, into which a tail portion of a so-called shank body (hereinafter simply referred to as shank) is movably fitted and secured. , a spring or other elastic body (hereinafter referred to simply as rubber) is placed between the box-shaped inner surface of the flange and the shank, and a pressure above a predetermined level is applied to the head of the shank in the direction of the flange. When the spring or rubber is compressed and deformed, the shank can be retracted into the 7 langes to a predetermined length,
If this is not the case, the shank can be pushed out of the 7 langes to a predetermined length by splashing or the resilient, resilient, expanding, and elongating action of the rubber. This is a spike for an automobile tire that has a stopper or other suitable shape structure between the two to prevent the spike from slipping out.

The above-mentioned time when a pressure exceeding a predetermined level is applied means that the spike of the present invention is attached to an automobile tire as in the past and placed on concrete or other hard paved road surface (hereinafter simply referred to as road surface). This includes cases where the vehicle is driven and braked on this road surface.

Note that the predetermined length is approximately 2 mm, but this change is not impeded.An example of the above will be explained below with reference to the drawings.

■As in the conventional example, the spikes of the present invention include two types, which have a so-called macaroni-shaped appearance and a bottle-shaped one, but since these types are not particularly relevant to the gist of the present invention, the appearance will be described as a pin-shaped example for convenience. Illustrated with chisel. It is assumed that the size is not much different from that of the conventional example, but for convenience of drawing and explanation, the balance of each part shown in the figure is not necessarily balanced.

The flange 1 shown in Figures 1, 2, and 3 has a hollow thin cylindrical box shape, and has circular holes 2 and 3 in the upper and lower surfaces 2 and 3, respectively, which are parallel to each other in Figures 2 and 3. and hole 3I, and hole 2. The diameter of the hole 3 is smaller than the diameter of the hole 3. Hole 3. The shank 4, which is fitted and engaged with the flange 1 through the tip 51, has a substantially cylindrical appearance from the head 5 having the tip 51 to the tail 6 on the opposite side, and the end edge 6 of the tail 6.
is protruded from the outer periphery in an annular shape. Tail 6 to head 5
The surface of the shank 4 in the required section can be made into a tapered cheek-like shape as shown in the figure.

The outer diameter of the annularly protruding edge 61 is smaller than the diameter of the hole 21. The outer periphery of the shank 4 immediately below the edge 61 can be brought into close contact with the inner periphery of the hole 3I, so that the shank 40 can be inserted into the flange 1 as shown in the third figure.
The head 5 is fitted and secured in a downward direction, and the lower surface 3 around the hole 3I is
A part of the upper side acts as a kind of stopper against the lower side of the edge 61 to prevent the shank 4 from escaping out of the seven langes 1 below.

A hemispherical hole 7 is recessed from approximately the center of the tail portion 6 toward the inner depth of the shank 4 (see Fig. 5), and the left and right lower surfaces 2 of the hole 2 are aligned with the cylindrical inner circumference of the flange 1. Left and right sides (tentative name)
1.・1. Place a spring as shown below between the left and right corners (tentative name) formed between the hole and the bottom of the hole.

That is, the left and right springs 8, 8, whose tips open diagonally upward in the shape of both airfoils, are arranged in a contracted state as desired, and the repulsive elasticity generated by the restraint received from the left and right corners causes the springs 8 to 7.
The shank 4 is compressed in the direction of the head 5 from the holder 1, and a part of the lower surface 3 is prevented from escaping due to the stopper action exerted on the edge 61 as described above, as shown in FIG. It looks like a single piece of spikes that are assembled together. This state shown in the second figure will be referred to as the normal state of the spike according to the present invention.

The present invention fixes the flange 1 of the spike in a normal state, and when a predetermined pressure or more is applied to the head 5 as shown by the arrow C in FIG. 2, the shank 4 is retracted into the flange 1 to a predetermined length. It is configured so that it can be used, but it requires a second
Assuming that there is a rubber layer (including the tread) of the tire from above up to the position of B...B broken line water in the diagram, that position and chip 5. If the distance between X and the tip (dashed line water) is a predetermined length,
The left and right springs 8 shown in the third figure may be further compressed to separate the tail portion 6 upward from the lower surface 3 by a length of X, and such a design is not limited to the example shown in the figure, but various other designs are possible.

In FIGS. 1 and 3, the left and right springs 8, 8 are connected by a hemispherical central portion 9 that is concave when viewed from above.

The hemisphere of the lower surface of the central portion 9 is smaller than the hemisphere of the hole 7.

The hole 7 can have a cylindrical shape that includes part or all of the hemisphere at its bottom, and the center part 9 can also have a plate shape that includes part or all of the hemisphere at its bottom. The corresponding holes 7 are recessed deeper into the shank 4 than shown in the illustration.
It is possible to make it that much longer and more powerful.

The bottom of the hole 7 can be made flat, and the central part 9 can be made into a flat plate smaller than the bottom. Although the springs 8 are shown in a left-right and front-front arrangement, they can also be in the shape of a cross on the left and right front and back when viewed from above, or in the shape of three blades intersecting at equal angles. Furthermore, spring 8・
8 shows most of it as an almost flat plate,
The springs 8, 8 can have a curved plate shape with a plurality of bends, wrinkles, and pleats, and can also have a part or all of a spiral shape.

The hole 2I in the upper surface 2 of the flange l, into which the shank 4 springs 8, 8, etc. have been fitted and engaged as shown in the third figure, can be closed by any method.

The shape of the left and right springs 8 and 8 in the normal state shown in Figure 3 is D.
If we assume that it is taken out as it is as shown in D in Figure 6, and remove the restraints received from the left and right corners, which were previously applied to both the left and right ends of the springs 8, 8,
The springs 8 and 8 open left and right to a relaxed state as shown in E (hereinafter simply referred to as "before relaxation"), but if a pinching force is applied from the left and right as shown by arrow F, they close toward the center and become tensioned as shown in G. The spring 8 is in a contracted state, and in this contracted state, the left and right ends are narrowed.
8 can be easily accommodated in the 7 flange 1 from the hole 21.

That is, it is sufficient to repeatedly insert and engage the shank 4 into the seven flange 1 and then the springs 8 and 8 in the order shown in Figs. 4, 5, and 6.

The above is referred to as the spring-only type of the present invention.

(2) An example of using special rubber in the present invention will be explained with reference to FIGS. 7 to 10. However, explanations will not necessarily be given regarding applications that can be imagined based on the matters described with respect to FIGS. 1 to 6. For this reason, the same name and similar number symbols will be used for common or similar items. What is special rubber?
It should be made of a material that can withstand sudden changes such as cold and hot expansion and contraction for a particularly long period of time, and any type of elastic body, whether natural or chemical, is acceptable.Hereinafter, it will be simply referred to as rubber.

The bottomed hole 71 in the shank 4 shown in Figures 7, 8, and 9 has a cylindrical shape and is recessed to a required depth Y. The pressure plate 10 disposed at the center above the hole 7 has a disk shape, and its upper surface 1
01 left and right springs 8.・An almost flat central part 9I is attached that connects 8I.

The pressure plate 10 has a diameter of a hole 7. The diameter of hole 7. Although the pressure plate 10 is shown fitted into the hole 71, the diameter of the hole 71 is smaller than the diameter of the hole 71.
It is assumed that there are some states in which it is not fitted into 1.

A substantially cylindrical rubber 11 is arranged on the lower surface lO2 of the pressure plate 100. The shape of the rubber 11 can be such that when it is placed inside the shank 4 in its normal state, part or all of it can approximately match the shape of the hole 71 as shown in the 10th figure.
Before loosening, take it out and measure its vertical length with hole 7. It is assumed that the length can be made longer than the depth Y by two minutes of the required length.

However, its thickness can be made smaller than the width of the hole 7I in any case.

The space between the upper side of the rubber 11 and the lower surface 10□ of the pressure plate 10 can be attached using an adhesive or the like, or it is also possible to protrude a bottle-shaped object approximately in the center of the lower surface 10□ and stick the rubber 11 into it to hold it ( (not shown).

The pressure plate IO can be made of the same material as the left and right springs 8I and 81, and can also be made integrally.

The above is referred to as the rubber combination type of the present invention.

1. Effects of the Invention As described above, the present invention has the following effects.

1. When the spike of the present invention is mounted on a tire and runs on a hard paved road surface such as concrete, the shank 4 along with the tip 5I is pushed into the flange 1 by the pressure shown by arrow C applied to the head 5 from the road surface. It is possible to reduce friction and wear on the road surface caused by so-called spikes to almost nothing. However, on compacted snow surfaces or so-called ice burns, it is possible to keep the spikes protruding from the tread surface to the required length until the head reaches the paved road surface below, which is highly expected to ensure safe driving and reliable braking.

2. According to the present invention, so-called vehicle dust pollution can be significantly reduced, contributing to the health and comfortable lives of people around the roadway.

6. According to the present invention, it is possible to reduce the large amount of pavement repair costs that are repeated every year, and also contribute to the improvement of municipal management.

[Brief explanation of drawings]

FIG. 1 is a front view of a spring-specific type of spike for automobile tires according to the present invention, FIG. 2 is a side view of the spike shown in FIG. 4, 5 and 6 are exploded explanatory views of FIG. 3, and FIG. 7 is a front view of the rubber-combined type of spike for automobile tires according to the present invention. , Figure 8 shows the one in Figure 7.
9 and 10 are explanatory views of a part of FIG. 8 in an exploded manner. 1...7 lunge 11...side 2...top 3
...Bottom surface 21.3. ...hole 4...shank
5...Head 5,...Tip 6...Tail
6. ...Edge 7.7.・・・Hole 8・81...
Spring 9, 9I...Central part 10...Pressure plate 1
0□...Top surface ]02...Bottom surface 11...Rubber

Claims (1)

[Claims] 1. The flange is a kind of box shape, into which the tail of the shank is movably fitted and engaged, and an elastic body made of a spring or rubber or the like is arranged between the box-shaped inner surface of the flange and the shank. When a pressure above a predetermined level is applied to the head of the shank in the direction of the flange, the spring or elastic body is compressed and deformed so that the shank can be retracted into the flange to a predetermined length. The shank can be pushed out of the flange to a predetermined length by the resilient, restoring, expanding, and elongating action of the elastic body. A spike for an automobile tire, characterized by having a stopper or other suitable shape structure in between.