JPS62225409A - Spike tyre - Google Patents

Abstract

PURPOSE:To contrive to prevent dust pollution by providing a hollow part in a crown part and providing a supporting belt on which spike pins are mounted, in the hollow part and arranging the constitution so that the spike pins may be pushed out or pulled in through pin guide parts in a tread part by adjusting a tyre pressure. CONSTITUTION:The length of pins 9 is set so that the tips of the spike pins 9, 9... may be in the position a little retreated from a tread earth contact surface 3a, in the condition where the air pressure in a tyre 1 is kept in the specified pressure and the pins are supported by a supporting member 10. Accordingly, when running the ordinary road face, the spike pins 9 keep the buried condition and function as an ordinary tyre. And when the air pressure is increased above the specified pressure, the supporting member 10 made of rubber is squeezed by the expansion deformation of the inside periphery wall 6a of the hollow part 6 resulting from the expansion of the tyre. Consequently the spike pins 9 project from the tread earth contact surface 3a to constitute a spike tyre. By this constitution, the damage on a road face can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention allows spike pins to be made to appear and disappear by adjusting the air pressure inside the tire! This invention relates to spike ties V for vehicles.

"Prior Art", "Problems to be Solved by the Invention, 1. When a vehicle travels on a snowy road or frozen passage, it is necessary to equip the tie V with anti-slip means for safe driving.

Chains are the most commonly used anti-slip means, but when installing or removing them, the vehicle must be stopped in a safe place, which is often difficult depending on road conditions. Moreover, the operation of the device 19 is extremely troublesome. Therefore, recently, spiked tires in which spike pins are installed in advance have become widely used. However, when driving on snowy or icy roads, these conventional spiked tires lose their driving force and
It exerts braking force, but on the other hand, the spike tires can be used on roads with no snow or roads with little snow, etc.
If a person drives on an unnecessary path, the spike pins will not only scrape off the road surface and cause dust pollution, which will cause serious social problems. This has become a problem.

However, in order to prevent the above problems caused by spiked tires, there is no fundamental solution other than replacing the tires when driving on roads where there is no snow and spike ties are unnecessary. It is almost impossible to replace the tires each time with one suitable for the road conditions.

Therefore, there were problems, especially during the transition period of early spring and early winter.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to make spike pins appear and disappear by adjusting the air pressure inside the tire, change the ground contact pattern of the tire, and adjust the tire to suit the road conditions. To provide a spike tie 1/1 that can increase or decrease the anti-slip effect of a tire, thereby improving the safety and convenience of a driver and preventing the generation of dust pollution.

[Means for Solving the Problem] The present invention has been made to achieve the above object, and the means (a) includes a tire having a width approximately equal to the width of the tread portion inside the crown portion constituting the tire. A plurality of spike pin guide holes are formed in predetermined portions of the tread portion, each reaching from the tread contact surface to the +if hollow portion, and each of these spike pins is A support belt having a plurality of spike pins having a predetermined length erected between positions corresponding to the guide holes is inserted into the cavity with the tip of each spike pin inserted into each of the spike pin guide holes. when the tire is fitted into the tire, and when the tire's air pressure is below a predetermined pressure, each of the spike pins maintains a positional relationship slightly set back from the tread contact surface, and when the tire's air pressure is a predetermined value higher than the predetermined pressure. In order to maintain a positional relationship in which each spike pin slightly protrudes from the tread contact surface, an elastic material vJ support member for supporting the support belt is provided in the hollow portion.

[Effect 1 Since the present invention comprises the above means, it operates as follows.

In other words, when the tire pressure is below the predetermined pressure, J3
In this case, the tip of the spike pin is located in the spike pin guide hole, and the tip of the spike pin maintains a position slightly set back from the tread contact surface, so there is currently no snow on the road, making spiked tires unnecessary. When traveling on a road, by setting the air pressure of the tires to a predetermined pressure (standard air pressure) and driving while maintaining this predetermined pressure, it is possible to travel without damaging the road surface. Next, when driving on snowy or icy roads, the air pressure of the tires that are maintained at a predetermined pressure is further increased to a predetermined value to reduce the tire pressure.
Due to the deformation of the cavity and the expansion of the support belt due to the expansion of the spike pin, the spike pin protrudes slightly from the tread contact surface along the spike pin guide hole, and in order to maintain this state,
By driving with the air pressure set to (Tie) 7, a sufficient anti-soaking effect can be obtained and safe driving is possible.

Note that the air pressure of the tie ψ can be easily adjusted at a general gas station. In addition, even in places where there are no gas stations, etc., reducing the air pressure to a specified pressure can be easily done by preparing a gauge and measuring it with the a31=.Also, when increasing the air pressure, However, it only requires a small amount of addition, so if you prepare a small air tank, you can easily do it anywhere.

"Example" The present invention will be described below based on an example shown in the drawings.

1 to 5, 1 is a vehicle tire, 2 is a crown portion of the tire 1, and 3 is a tread portion C constituting the outer circumferential portion of the crown portion 2. In FIGS. 4 is a carcass, 5 is a belt, and between this belt 5 and carcass 4 is a tread part 3.
A cavity 6 having a width approximately equal to the width of the cavity 6 and a predetermined height.
is formed with a roof all around the 71 to Thailand. 7.7・
. . . has one end opening at a predetermined portion of the tread portion 3 to the red ground plane 3a, and has a narrow end extending into the hollow portion 6.
A large number of spike pin guide holes are provided in a shape of 14 with N spaces between them. 8 is a support belt, and this support belt 1-8
1 in the cavity 6 using an elastic material such as synthetic rubber. ! It is formed to have a diameter and width that can be installed, and a large number of spike pins 9, 9, . That is, each spike pin 9,9... is connected to each spike pin guide hole 7 in the outer circumference of the support belt 8.
．． 7... are erected at the corresponding locations,
Its diameter is set to a thickness that allows it to fit loosely into the spike pin guide hole 7, and its length is set so that each spike pin 9.9
... into each spike pin guide hole 7.7.
. . , the support belt 8 is inserted into the cavity 6.
In a state in which the support belt 8 is sandwiched between the inner circumferential wall 6a of the cavity 6 and support members 10, 10, etc., which will be described later, and the air pressure in the tire 1 is maintained at a predetermined pressure. , the tips of each spike pin 9.9... are positioned slightly behind the tread contact surface 3a! J'I
It is formed to a length that allows it to slide.

10.10... is a support member provided in a manner that projects into the cavity 6 in order to always hold the support belt 8 between the inner circumferential wall 6a of the cavity 6 and also support the tread part 3. , these support members 10, 10... are made of an elastic material such as synthetic rubber having a predetermined compressive strength, and are formed into a substantially mountain-shaped cross section and surround each spike pin guide hole 7, 7... It is provided protrudingly on the outer peripheral wall 6b of the cavity 6, and when the air pressure of the tire 1 is maintained at a predetermined pressure, it maintains a substantially normal cross-sectional shape of a substantially chevron-shaped cross section, and is removed as the air pressure increases. As the inner circumferential wall 6a of the cavity 6 gradually expands and deforms as the tire expands, it deforms so as to be crushed by the support belt 8, which also expands and deforms.

Due to the deformation of the support belt 8 and the support members 10.10..., each spike pin 9.9... moves in the protruding direction along each spike pin guide hole 7.7... In a state where the air pressure exceeds a predetermined pressure by a predetermined value, their tips are located at a position slightly protruding from the tread contact surface 3a.

In addition, in order to move the spike pins 9,9... in such a state to a position 4 where their tips are retreating from the tread contact surface 3a, the air inside the tire 1 is exhausted and the air pressure is reduced to a predetermined pressure. As a result, the inner peripheral wall 5a of the cavity 6 and the support belt 8 shrink due to the contraction of the tie puller 7, and the support members 10, 10... return to their normal state due to expansion, so that each of the spike pins 9, 9... It is configured such that the tip of the I/red is moved to a position slightly retreating from the ground plane 3a.

In addition, in the above-mentioned embodiment, 7J-scrap 4 and belt 5
Although the configuration in which the cavity 6 is formed in between has been described, the position where the cavity 6 is formed is not limited to the example and may be at another position. In short, the cavity 6 is affected by air pressure.
Any position is sufficient as long as the inner peripheral wall 6a is easily expanded and contracted. Further, the material, shape, position, etc. of the support member are not limited to the examples.

Since the present invention has the above configuration, if the air pressure of the tie 71 is maintained at a predetermined pressure, each spike pin 9.9...
The tips of the spike pins 9.9 are located at a position slightly retreating from the tread contact surface 3a, and when the air pressure is increased by a predetermined value above the predetermined pressure, the tips of the spike pins 9. state. Therefore, in the former case, only the tread 3 is grounded, and in the latter case, the spike pins 9 are also grounded. Therefore, when driving on a surface where normal driving is possible, such as a snow-free road, if the air pressure is maintained at a specified pressure, the spike pins 9.9 will not touch the ground and cause 10 scratches on the road. There is no risk. On the other hand, when driving on roads where the tires need to be equipped with anti-slip means, such as on frozen roads, if the air pressure is increased by a predetermined value, the tips of each spike pin 9, 9... will protrude slightly from the tread contact surface 3a and the road surface come into contact with. Therefore, sufficient driving force and braking force are ensured on frozen roads and the like, making safe driving possible.

"Effects of the Invention" As detailed above, according to the spiked tire according to the present invention, the spike pins can be made to appear and come out and the tire's ground contact pattern can be changed by simply adjusting the tire's air pressure. It is easy to increase or decrease the anti-slip effect of a tire according to the situation, so you can drive safely on snowy roads with a single tire without changing tires, and on snow-free roads, the anti-slip effect of the tire can be easily increased or decreased. It is possible to run without adding anything (1m), and therefore, it is possible to solve the dust pollution problem caused by conventional spiked tires, and the effects it has are remarkable and great.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of the main part of the tread section, Fig. 2 is a perspective view of the main part of the support bell 1 with spike pins installed, and Fig. 3 is a front view of the main part of the tread section. is a schematic cross-sectional view of the main parts of the tire when the tire air pressure is at a predetermined pressure, FIGS. 4 and 5 are enlarged detailed views of section A in FIG. 3, and FIG. 4 is an enlarged detailed view when the air pressure is at a predetermined pressure. , FIG. 5 is an enlarged LiT detail diagram when the air pressure is increased by a predetermined value from the predetermined pressure. In the figure, 1 is the tire, 2 is the crown part, 3 is the tread part, 3
a is 1-red ground plane, 4 is carcass, 5 is belt, 6
6a is a hollow part, 6a is an inner circumferential wall, 6b is an outer circumferential wall, 7 is a spike pin guide hole, 8 is a support belt, 9 is a spike pin, 10
is a support member. Patent applicant Showa Aircraft Industry Co., Ltd. Agent Tadashi Kamoshita 8 Figure 1 Figure 2 Figure 31i! J

Claims (1)

[Claims] A cavity having a width substantially equal to the width of the tread portion is formed inside the crown portion constituting the tire, extending around the entire circumference of the tire, and reaching the cavity portion from the tread contact surface at each predetermined portion of the tread portion. A support belt with a large number of spike pin guide holes drilled therein and a plurality of spike pins each having a predetermined length erected in a positional relationship corresponding to each of these spike pin guide holes is attached to the tip of each spike pin. are respectively fitted into the respective spike pin guide holes into the hollow portion, and when the air pressure of the tire is below a predetermined pressure, each of the spike pins maintains a positional relationship slightly retracted from the tread contact surface. In order to maintain the positional relationship in which each spike pin slightly protrudes from the tread contact surface when the air pressure of the tire is increased by a predetermined value from the predetermined pressure, an elastic material is provided to support the support belt in the hollow portion. A spike tire characterized by being provided with a support member.