JPH0820201A - Vehicle slip prevention method and auxiliary slip prevention device - Google Patents

Abstract

PURPOSE:To realize a vehicle slip prevention method which increases contact friction force between a tire and a road surface in order to prevent slip of a vehicle. CONSTITUTION:A vehicle slip prevention method in which ice particles or water or a mixture of ice particles and water 3 are sprayed on a frozen road surface to make ice particles adhere on the road surface or generate them so that projections and depressions 5 are formed on the frozen road surface in order to increase contact friction force between a tire of a vehicle and the road surface is adopted as a means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle slip prevention method and a slip prevention auxiliary device.

[0002]

2. Description of the Related Art Conventionally, spiked tires have been used to prevent slipping on very slippery roads such as frozen roads.
It has been used, but spiked tires have been banned to prevent dust pollution. Therefore, at present, studless tires are being used instead of spike tires, but studless tires polish the ice and snow road surface at the time of braking, and the so-called "mirror burn" road surface with an ultra-low friction coefficient (hereinafter, (Expressed as ultra-low μ road) appears,
It has come to be cited as a cause of accidents such as rear-end collisions at intersections and collisions due to over stop lines.

Therefore, there is disclosed a method of preventing slip by spraying sand at the time of slip. These disclosures deal with a method of spraying sand when the vehicle starts or slips when braking, but there is a problem that sand accumulates on the road. In particular, during the snowmelt period, dust pollution is expected to occur due to the sand deposited and accumulated. Japanese Patent Application Laid-Open No. 4-38204 discloses that the vehicle is easily slipped during braking,
This is a publication that discloses a method of applying a minimum necessary amount by applying an anti-slip agent only at a predetermined time when starting.

Japanese Unexamined Patent Publication (Kokai) No. 63-2706 discloses a method for preventing slippage on an ice / snow road by applying a liquid adhesive to the tire surface and adhering a granular or strip-shaped non-slip material. Is. However, at present, none of these disclosures is a fundamental countermeasure against dust pollution.

[0005]

SUMMARY OF THE INVENTION In view of the above situation, the present invention embodies a slip preventing method for increasing the contact frictional force between a tire and a road surface in order to prevent a vehicle slip, and the method. An object is to provide a slip prevention auxiliary device.

[0006]

In view of the above, the present invention relates to claim 1, that is, by spraying ice particles or water, or a mixture of ice particles and water, on the frozen road surface to attach the ice particles to the road surface, Or, by generating and forming unevenness on the frozen road surface,
A vehicle slip prevention method characterized by increasing a contact frictional force between a vehicle tire and a road surface to prevent slippage is adopted as a means.

According to claim 2, that is, by spraying ice particles or water or a mixture of ice particles and water on the frozen road surface, the ice particles are attached to or generated on the road surface, and the ice particles are applied to the frozen road surface. As a means, a slip prevention auxiliary device characterized by being capable of forming irregularities is adopted. According to a third aspect of the present invention, the method for preventing slippage of a vehicle according to the first aspect is employed as means for preventing slippage by mounting the slip prevention auxiliary device on the vehicle.

Further, according to claim 4, that is, the slip prevention method is adopted as a means for preventing slip by installing a slip prevention auxiliary device at a required position on a road surface. Is.

[0009]

From this, that is, by adopting the first aspect, when ice particles or water or a mixture of ice particles and water released into the atmosphere is sprayed, irregularities are formed on the road surface. The vehicle will run on an uneven road surface formed by ice particles,
Irregularities formed by ice particles are incorporated into the tire and the ground contact surface of the road surface. Then, the unevenness increases the contact frictional force between the tire and the ground contact surface of the road surface. Therefore, it has an effect of preventing tire slip.

[0010]

【Example】

(First Embodiment) A first embodiment of the present invention will be described below with reference to the examples shown in the drawings. FIG. 1 shows an embodiment of the present invention. In the figure, 1 is a vehicle, 2 is a particle spraying device for spraying ice particles or water, or a mixture of ice particles and water on a road surface, and the vehicle 1 is equipped with the particle spraying device 2.

The particle spraying device 2 includes a tank 21 and water 2.
2, a valve 23, a spray port 24, a pipe 25, and an antifreezing device 26. The tank 2
1 is for storing water, and is provided with an inlet 27 and a plug 28 for replenishing water. Further, the water 22 in the tank 21 can be kept warm by a freeze prevention device 26 for preventing the water 22 from freezing.

The water 22 stored in the tank 21
Is not limited to special water such as pure water, and may be ordinary water. The valve 23 is provided with a valve starting switch (not shown) inside the driver's seat of the vehicle 1, and can open and close the valve in conjunction with the operation of the valve starting switch. The water 22 can be sprinkled from the tank 21 at the same time as starting.

The spraying port 24 has a function of spraying the water 22 in the form of mist so that the water 22 is sprayed into the atmosphere and then cooled in the atmosphere to facilitate the formation of ice particles. The pipe 25 includes the tank 21 and the valve 2.
3, and a pipe for connecting the spray port 24,
The water 22 passes through the pipe 25 and flows through the spray port 24.
Sent to

The antifreezing device 26 is provided with at least heating means and heat retaining means (for example, a heater wire and a heat insulating material, not shown), and the tank 21, the valve 23, the spray port 24, and the Heat the pipe 25 to keep it warm,
It prevents malfunction due to freezing. The water 22 ′ released into the atmosphere from the spray port 24 is rapidly cooled by the atmospheric temperature or the rapid expansion action and solidifies to form ice particles or water, or ice particles and water. Is sprayed on the road surface as a mixture 3 of.

The ice particles or water sprayed on the road surface or the mixture 3 of ice particles and water forms irregularities on the road surface 4. The vehicle travels on an uneven road surface formed by ice particles, and the unevenness formed by ice particles is taken into the contact surface between the tire and the road surface. Then, the unevenness increases the contact frictional force between the tire and the ground contact surface of the road surface. Therefore, tire slip can be prevented.

In the present invention, since ice particles are sprayed (generated), there is no need to worry about dust pollution and environmental pollution. Then, by going to a place where slippage is likely to occur and spraying (generating) ice particles as much as necessary, it is possible to prevent slippage of all vehicle types and all vehicles, and improve traveling safety on frozen roads. Furthermore, if the present invention is applied to a pedestrian crossing, it is possible to prevent pedestrians from slipping.

Further, in the above-described embodiment, since the ice particles are scattered (generated) on the road surface to prevent the slip, the ice particles 2 in the tank 21 instead of the water 22 can be prevented.
2 ″ may be stored and the ice particles may be sprayed directly from the spray port 24 ′. Further, FIG. 2 shows another example of the first embodiment, but with the ice making device 6 mounted. , Cool the water,
You may make ice in the tank 21 ', crush it with an ice crusher, etc., and spray ice particles 22 ".

In addition, in FIG. 3, an ice grain storage tank 7 may be mounted on the other example of the first embodiment so as to store the ice grains 22 ". In addition to opening and closing the valve, water may be sent out by a pump, etc. (Second Embodiment) In the first embodiment, ice particles or water, or particles for spraying ice particles or a mixture of water and ice particles on a vehicle. Although the example in which the spraying device 2 is mounted is shown, the particle spraying device 2 may be installed in a place where slippage is likely to occur, for example, a road near a stop line such as an intersection or a slope, or near the road. As an example, an example of the particle spraying device installed at the intersection will be described.

FIG. 4 shows a particle spraying device 2'according to the present invention. In the figure, 201 is a water supply device, 202 is a water source,
Reference numeral 203 is a spray port, 204 is piping, 205 is an antifreezing device, and 206 is a start / stop switch. The water supply device 201 has a pump 208 for pumping water from a water source and spraying water 207 pumped from the spray port.
There is. In order to prevent the water from freezing in the pipe 204 or the pump, the pipe 204 and the water supply device 201 are kept warm by the antifreezing device 205 to prevent inactivation due to freezing.

As the water source 202, a water pipe or an existing water sprinkling facility or a water tank may be used. In the example shown in FIG. 4, the pipe is drawn from the water source 202 and the water is pumped up by the pump. However, a tank may be installed in the water supply device 201 to store the water. The spraying port 203 has a shape capable of spraying water droplets on a mist (for example, a spraying shape) in order to easily form ice particles after spraying.
Has become.

The antifreezing device 205 can be heated by a heat insulating cover 209, a heater wire 210 and the like, which is a heat insulating and heat insulating means, and prevents the device 2'from being inoperable due to freezing. Start / stop switch 206
Is a means for starting / stopping the particle spraying device 2. The starting / stopping means is means for detecting freezing of the road surface (for example, the temperature is measured by a temperature sensor, and 0 ° C. or lower is frozen). Method or the method of checking the freezing of the road surface with a video camera, etc.)
The stop switch 206 is activated. When not frozen,
The start / stop switch 206 is stopped.

The installation state of the particle spraying device 2 "is shown as an example in FIG. 5. As long as the ice particles can be sprayed or generated on the road surface, it may be installed on the road or in the vicinity of the road. As for the place, if ice particles can be sprayed or generated on the road surface, it may be installed on or near the road, and may be installed on a pedestrian bridge, a sign, etc. At least one particle spraying device 2 is installed. It should be done, but it should be set according to the traffic volume and road conditions.

[0023]

With the above operation, it is possible to provide a slip prevention method for increasing the contact frictional force between a tire and a road surface, and a slip prevention auxiliary device embodying the method.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing another example of the first embodiment.

FIG. 3 is a partial cross-sectional view showing another example of the first embodiment.

FIG. 4 is a sectional view showing a second embodiment of the present invention.

FIG. 5 is a diagram of an installation example of the second embodiment viewed from above.

[Explanation of symbols]

 1 Vehicle 2 Particle Dispersing Device 21 Tank 22 Water 23 Valve 24 Dispersing Port 25 Piping 26 Freezing Prevention Device 27 Inlet 28 Plug 3 Ice Grain, or Water, or a Mixture of Ice and Water 4 Road Surface 5 Irregularity of Ice Grain 6 Ice maker 7 Ice grain storage tank 8 Crossing 9 Ice grain, or water, or a mixture of ice and water mixture 201 Water supply device 202 Water source 203 Spray port 204 Piping 205 Freeze protection device 206 Start / stop switch 207 Water 208 Pump 209 Heat insulation cover 210 Heater wire 211 Power supply for heater

Claims (4)

[Claims] 1. By spraying ice particles or water, or a mixture of ice particles and water, on the frozen road surface, the ice particles are attached to or generated on the road surface to form irregularities on the frozen road surface, A method for preventing slippage of a vehicle, which comprises increasing a contact frictional force between a vehicle tire and a road surface to prevent slippage. 2. A method of spraying ice particles or water, or a mixture of ice particles and water onto an icy road surface to adhere or generate the ice particles to the road surface to form irregularities on the icy road surface. An anti-slip auxiliary device characterized by being able to 3. The method for preventing slippage of a vehicle according to claim 1, wherein slippage is prevented by mounting a slip prevention auxiliary device on the vehicle. 4. The method for preventing slippage of a vehicle according to claim 1, wherein slippage is prevented by installing a slip prevention auxiliary device at a required position on the road surface.