JPH0262404B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The disclosed technology belongs to the technical field of pin structures for spiked tires for snowy roads and frozen roads that are bonded to vehicles such as automobiles.

<Summary of the gist> The present invention is a pin embedded in the tread of a spiked tire of a vehicle such as an automobile when driving on a road surface covered with water or snow in winter. This invention relates to a pin structure of a spike tire which is buried and whose flat tip is exposed on the outer peripheral surface of the tire to lower the freezing point of the ice and snow surface on the road. Both vertical surfaces are formed parallel to the tire, and both vertical surfaces are formed perpendicular to the side surface of the tire. This invention relates to a pin structure of a spiked tire, in which both facing surfaces of the tire can be selectively protruded by deformation of the tire when the vehicle starts, brakes, etc.

<Prior art> Generally, in snowy regions, there is snow on the roads during the winter, and melted snow and water freeze at night, making it difficult for vehicles equipped with so-called normal tires to slip and drive. Because it is extremely dangerous, chains are attached,
This has been dealt with by installing so-called spiked tires.

Particularly in snowy regions where it is necessary to constantly deal with snow falling on the road surface, the advantages include good vehicle running stability, safety as there are no unattached parts compared to chain attachment, and the hassle of attachment and detachment. Spiked tires are often used.

As is well known, the function of spiked tires has traditionally been to expose the tips of pins driven into the tire to the outer periphery of the tire, thereby reducing the freezing point of ice and snow when the tips of the pins are pressurized against the snow surface, etc. The system uses the descent to melt ice and snow, which bites into the road surface and prevents slips.

<Problems to be Solved by the Invention> However, with the pin structure of the conventional spiked tires mentioned above, the amount of penetration into the snow surface is smaller than when a chain is installed, so the braking distance during brake operation is longer. It had the disadvantage of becoming.

There was also the risk that an unexpected accident could occur due to the slip being in a locked state.

In addition, although it causes less vibration to the vehicle during running than a chain installed in the traveling direction of the vehicle and in the left and right directions, it cannot effectively deal with vibrations in the left and right directions of the vehicle, making driving difficult. There was also the problem that it was difficult to do.

Furthermore, if the pins embedded in the tire become loose due to the use of spiked tires over time, the pins will rotate within the tire, causing even more looseness and eventually falling off the tire. There were also some problems.

In addition, since the tip of the cemented carbide alloy (chip) protrudes and is exposed to the outer circumference of the tire, it may be damaged by bumps on the road surface while driving on general roads, which increases the rolling resistance of the tire. In addition to this, fuel efficiency decreases, and the braking distance increases dramatically when the brakes are applied suddenly while driving at high speed on a dry road, contrary to driving on an icy and snowy road, and it becomes impossible to maintain the vehicle's posture, resulting in the most dangerous situation. It has been proven that

Therefore, the noise generated was also severe.

The purpose of this invention is to solve the technical problem of the pin structure of spiked tires based on the above-mentioned prior art, and while taking advantage of the advantages of less vibration to the vehicle and good running stability, The use of excellent spiked tires not only reduces the distance traveled, but also suppresses noise while driving, prevents damage to the road surface, and prevents tires from falling off, thereby benefiting automobile applications in the transportation industry. It is intended to provide a pin structure.

<Means and operations for solving the problems> In order to solve the above-mentioned problems, the structure of the present invention, which is based on the above-mentioned claims, is to solve the above-mentioned problems. In this case, the base side of the pin embedded in the tread of the spiked tire of the vehicle is supported inside the tire, and when the tip of the pin presses against the snow surface, the ice and snow melt due to the freezing point drop and dig into the snow surface, causing damage to the left and right sides of the vehicle. Both vertical surfaces formed parallel to the side surfaces of the tire prevent slips in the direction of the tire, while slips in the longitudinal direction of the vehicle when braking or starting are prevented.
When the tire deforms along the circumferential direction of the tread at the time of slipping, a compatible surface formed perpendicular to the side surface of the tire that selectively protrudes due to the elasticity of the rubber prevents this. Even if the tire tread rattles due to use over time, the central part is formed with a substantially rectangular cross section and the outwardly protruding base part is formed in an oval shape, which prevents the tire from rotating and coming off. Technical measures have been taken to prevent the pin from falling off the tire, and to ensure that the tire and pin wear harmoniously to the same extent.

<Embodiment - Configuration> Next, an embodiment of the present invention will be described below based on the drawings.

As shown in FIGS. 1, 2, and 3, a large number of pins 3 made of ultra-high alloy or the like are embedded in the tread 2 of the tire 1, which constitutes the gist of the present invention.

The center part of the pin 3 is formed to have a substantially rectangular cross section and has a rotation prevention function when buried in the tire 1. The pin 3 is formed to protrude outward and has an oval-shaped base part 4 that is formed in a tread in the tire 1. It is supported by 2.

Thus, the oval-shaped base 4 projecting outward from the pin 3 has a rotation preventing function against the tread 2 and is designed to prevent damage to the tread 2.

Further, a flat surface 5 is formed at the tip of the pin 3,
A portion entirely exposed to the outer surface of the tire 1,
Both vertical surfaces 6, 6 are formed parallel to the side surface of the tire 1 and the tire 1 is perpendicular to the side surface of the tire 1.
Both elevations 7 formed on the front and rear sides when in contact with the ground,
7, both vertical surfaces 6, 6 prevent the vehicle from slipping on the left and right sides, and a protrusion 8 formed by both vertical surfaces 7, 7 and each vertical surface 7 and the flat surface 5.
is designed to resist the slippage of the tires 1 when braking or starting, thereby shortening the braking distance of the vehicle.

Note that a groove 9 is cut into the tire 1, and the bottom surface 10 of the base portion 4 of the pin 3 is formed in a curved shape.

<Embodiment - Effect> In the above configuration, when a vehicle equipped with a tire 1 having a large number of pins 3 runs on a snowy or frozen road, the flat surface 5 at the tip of the pin 3 presses against the ice and snow surface. The ice and snow are melted by the freezing point lowering action, and as a result, the tip of the pin 3 digs into the ice and snow surface, giving a spike effect to the road surface.

Therefore, in a curve where the rear wheels of the vehicle slip left and right while driving, both vertical surfaces 6, 6 formed along the sides of the tire 1 at the tip of the pin 3
This prevents slips by resisting the left and right vibrations of the vehicle.

In addition, when the brake is operated while driving, the tread 2 of the tire 1 may deform along the circumferential direction and freely escape into the groove 9, as shown in Fig. 4, which may affect the elasticity of the rubber. Therefore, since the pin 3 tilts within the tread 2, the vertical surface 7 that is perpendicular to the side surface of the tire 1 and formed on the front side (left side in FIG. 4) when the tire 1 is in contact with the ground, and its corner edge The protrusion 8 grips the ice and snow surface, minimizing vehicle slippage and shortening braking distance.

Therefore, when the vehicle slips off on an icy road, as shown in FIG. 5, the pin 3, which tilts in the same way as described above, causes the vertical surface 7 and the corner edge protrusion 8 on the opposite side (the right side in FIG. 5) to move onto the frozen surface. This prevents slipping when starting.

Next, for example, driving on a road without snowfall,
When driving on roads that have melted snow and ice in early spring,
As shown in FIG. 6, the flat surface 5 at the tip of the pin 3 is exposed parallel to the outer peripheral surface of the tire 1, and the bottom surface 10 of the base 4 of the pin 3 is formed into a curved shape and extends toward the center of the tire. By making it easier to escape,
Wear and tear on the road surface is kept to a minimum, thereby reducing running resistance and making it possible to drive with reduced fuel consumption.

Furthermore, since the base portion 4 of the pin 3 is formed to protrude outward within the tread 2, the pin 3
It is possible to reliably prevent the pin from falling out of the tire 1, and even if the pin 3 becomes loose due to use over time, the pin 3 can rotate within the tire 1 because the center part of the pin 3 is formed with a substantially rectangular cross section. Therefore, the positions of the vertical surface 6 and the vertical surface 7 do not change, and the spike action in the left-right direction and front-rear direction is not hindered.

Further, since the base portion 4 is formed into an oval shape, it does not damage the tread 2 even though it has a rotation prevention function.

<Other Embodiments> It goes without saying that the embodiments of the present invention are not limited to the above-described embodiments, and various embodiments can be adopted, such as, for example, the tips of the pins may be curved.

<Effects of the Invention> As described above, basically, according to the present invention, while taking advantage of the advantage of spiked tires, which are extremely superior in running stability compared to tires equipped with chains, it is possible to prevent slips on the left and right sides of the vehicle and slips when operating the brakes. This has the excellent effect of reliably reducing the amount and further improving safety.

In addition, since the exposed tip is provided with both vertical surfaces parallel to the side surface of the tire and both vertical surfaces formed perpendicular to the tire side surface, for example, when driving around a corner, Both vertical surfaces prevent the rear wheel from slipping in the left and right direction.
In order to prevent slippage in the longitudinal direction that occurs when applying the brakes or when starting the vehicle, we take advantage of the fact that the tire tread deforms in the circumferential direction. An excellent effect is achieved in that reliable penetration into the snow surface is achieved as in the case of wearing the snow cover.

Furthermore, since the central part is formed to have a substantially rectangular cross section and the outwardly projecting base part is formed in an oval shape, even if the pin wobbles within the tire tread, the pin will not rotate and both The direction of the vertical surface and the compatible surface changes without adversely affecting the spike action, the base does not damage the tread, no noise is generated, and fuel efficiency is improved.

In addition, the structure is simple and lightweight, and the manufacturing cost is less than half that of conventional pins.

[Brief explanation of drawings]

Fig. 1 is an overall front view of one embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a plan view, and Figs. 4, 5, and 6 are respectively shown when braking on an icy road, when starting on an icy road, and on a normal road surface. FIG. 3 is a cross-sectional view showing the state when the vehicle is running. 1...tire, 2...tread, 3...pin,
6, 6... Vertical surface, 7, 7... Elevated surface, 4... Base.

Claims (1)

[Scope of Claims] 1. In a spike tire pin structure in which the pin is embedded in the tread of the tire and has a tip exposed in a planar shape on the outer circumferential surface of the tire, the pin is formed at the exposed tip in parallel to the side surface of the tire. The tire has two vertical surfaces and two vertical surfaces formed perpendicularly to the side surface of the tire.The central part is formed to have a substantially rectangular cross section, and the outwardly protruding base part is formed in an oval shape. A pin structure for a spiked tire, characterized in that a pin structure for a spiked tire is characterized in that by being deformed along the tire surface, both surfaces can be selectively projected onto the outer circumferential surface of the tire due to the elasticity of the rubber, so that the pin structure is made to wear together with the tire. 2. The pin structure for a spiked tire according to claim 1, wherein the tip end surface of the pin is a flat surface. 3. The pin structure for a spiked tire according to claim 1 or 2, wherein the bottom surface of the base portion is formed in a curved shape.