JPH07309101A - Auxiliary device and method for preventing slip of vehicle - Google Patents

Abstract

PURPOSE:To prevent the slip of a vehicle in a pollution-free manner without an environmental pollution such as dust pollution by spraying ice particles, a mixture of ice particles and water, or water to generate ice particles between the tires and the road surface. CONSTITUTION:Water 42 is sprayed in an atomized manner forward of tires 2 close to tire houses 9 from a nozzle 44 in a container 41 to store the water 42 provided with a freezing preventing device 46 through a switching valve 43 to be opened by the spray starting signal of a slip detecting device 5. The water 42 discharged from the nozzle 44 is sprayed on a contact part 10 of the tires 2 with thc road surface 7 as ice particles or the mixture 6 of the water 42 and ice particles which are solidified through the temperature drop due to the atmospheric air or due to the rapid expansion. The sprayed ice particles or the mixture of water and the ice particles are cooled on the road surface 7 to fieeze the water, or the ice particles are melted to generate the surface roughness on the road surface 7. This surface roughness increases the friction force on the contact surface of the tires. Thus, the slip can be prevented in a pollution-free manner without the dust pollution and the environmental pollution.

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 auxiliary device and method for preventing a slip between a vehicle tire and a road surface when the road surface is frozen.

[0002]

2. Description of the Related Art Conventionally, spike tires have been used to prevent slipping on slippery roads such as frozen roads, but spike tires have been prohibited to prevent dust pollution. Currently, the development of studless tires has progressed and has become the mainstream, but studless tires polish the ice and snow road surface at the time of braking etc., and an ultra-low μ road called "Mirror Burn" appears, and rear-end collisions and stop lines at intersections etc. This has caused a new problem that many accidents such as collisions due to overtime occur.

Therefore, by spraying sand during slip,
Although a method of preventing slippage has been devised, this method may cause sand to be deposited on the road because it is sprayed every time it slips when starting or braking. Therefore, it is expected that the accumulated sand will cause dust pollution in the spring. Japanese Patent Application Laid-Open No. 4-38204 describes a method of instantaneously spraying a necessary minimum amount of an anti-skid agent when a vehicle operates a brake that easily slips, but it is not a fundamental measure against dust pollution.

Even when the snow-melting agent is sprayed, it may be dissolved in water after the snow is melted to pollute the water, leading to environmental pollution.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to prevent dust-pollution, environmental pollution, and pollution-free vehicle slippage.

[0006]

In order to achieve the above-mentioned object, the present invention is an auxiliary device for preventing a vehicle from slipping during braking or driving of a vehicle, in which an ice particle or a mixture of water and ice particles is used. , Or an auxiliary device for preventing slippage of a vehicle provided with a device for spraying water for generating ice particles between a tire and a road surface, or an auxiliary device for preventing the vehicle from slipping during braking or driving of the vehicle. At, a device for detecting the slip between the tire and the road surface, ice particles,
Alternatively, a vehicle slip prevention auxiliary device equipped with a mixture of water and ice particles, or a device for spraying water to generate ice particles between the tire and the road surface, or the tire and road surface during braking or driving of the vehicle By increasing or increasing the contact frictional force between the tire and the road surface by spraying or generating ice particles between and, a vehicle slip prevention method to prevent vehicle slip, or during braking or driving of the vehicle, Detects the slip between the tire and the road surface and increases the contact friction force between the tire and the road surface by scattering or generating ice particles between the tire and the road surface to prevent the vehicle from slipping. This is a technical means called a vehicle slip prevention method.

[0007]

According to the first and third aspects of the present invention, ice particles are scattered or generated on the ground contact portion between the tire and the road surface, and the ice particles adhere to the road surface to form irregularities on the road surface. These irregularities increase the contact frictional force between the tire and the road surface, and can prevent tire slip.

According to the inventions of claims 2 and 4,
In addition, the device that detects the slip between the tire and the road surface automatically detects the slip and automatically sprays ice particles, or a mixture of water and ice particles, or water for forming ice particles. Can prevent slippage.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the system configuration of the first embodiment of the present invention. The first embodiment comprises a vehicle 1, a particle spraying device 4 for spraying ice particles, a mixture of ice particles and water or water, and a slip detecting device 5. In addition, the particle spraying device 4
Is composed of a container 41, water 42, a switching valve 43, a nozzle 44, a pipe 45, and an antifreezing device 46.

The container 41 is for storing water 42, and has an inlet and a plug (not shown) for replenishing water. Further, in order to prevent the water from freezing, the anti-freezing device 46 can keep warm. The water 42 need not be pure water, but may be tap water or the like. The switching valve 43 is operated by a spraying start signal from the slip detection device 5 to open, and the water 42 can be made to flow from the container 41 to a required minimum and closed.

The nozzle 44 has a shape capable of spraying the water 42 in a mist state so that the water 42 is cooled in the atmosphere and is easily made into ice particles after the water 42 is discharged into the atmosphere. Nozzle 44
The front of the tire near the tire house 9 is preferably attached to the tire, and ice particles or water on the tire 2 or the road surface 7 or on the tire surface in order to make it easier for the tire to be taken into the tire contact surface due to movement of the vehicle or rotation of the tire. Mixture of ice and ice 6
The nozzle 44 is fixed so that the spray can be sprayed.

The antifreezing device 46 is composed of a heater wire and a heat insulating cover, keeps the temperature of the container 41, the switching valve 43, the nozzle 44, and the pipe 45, and prevents malfunction due to freezing.
The slip detecting device 5 detects a slip of the tire during braking operation while the vehicle is traveling or when the vehicle starts moving on a slope or the like by the operation signal of the anti-lock brake system or the traction control system, the signal of the wheel speed sensor, etc. Slip is prevented by activating the switching valve 43 in the above and outputting a signal for opening the switching valve 43 during the slip to spray or generate ice particles or a mixture 6 of water and ice particles on the road surface. It is composed.

Water 42 discharged from the nozzle 44 into the atmosphere
Is reduced by the temperature of the water 42 to solidify due to the atmospheric temperature or the rapid expansion, so that the ice particles or the mixture of water and ice particles 6
As a result, it is sprayed toward the tire and the ground contact portion 10 of the road surface 7. The sprayed ice particles or a mixture 6 of water and ice particles are cooled on the road surface 7 to freeze the water, or the ice particles are melted to adhere to the road surface and form irregularities on the road surface 7 with the ice particles.
As the vehicle body advances or the tire rotates, the irregularities on the road surface 7 are captured between the tire contact surfaces, and the irregularities act to increase the contact frictional force generated at the tire contact surfaces. Prevent slip.

What is particularly noteworthy in the present invention is that since ice particles are scattered or generated, it is possible to eliminate the concern that dust pollution or environmental pollution will occur. Since the raw material of the ice particles is water, it has the advantage of being inexpensive and easily available. Since ice particles adhere to the road surface, the road surface is maintained in a rough state, and slippage of a vehicle not equipped with this device can be prevented.

As another embodiment, the particle spraying device 4 may have a structure capable of storing ice particles and directly spray the ice particles. Further, an ice making device may be added to the constituent elements of the particle spraying device 4 to spray water while forming ice particles. Ice particles need only be taken into the contact area between the tire and the road surface.Therefore, the ice particles should be sprayed from the rear surface of the tire toward the ground contact area or the road surface behind the tire so as to be effective even when the vehicle moves backward. You may.

It is also possible to scatter ice particles on the tire surface and make the ice particles adhere to the tire surface so that they are easily taken into the ground contact surface as the tire rotates. It is preferable that at least one nozzle is provided for each tire, but one nozzle may be provided on the left and right in front of the front row of tires, or the nozzles may be sprayed from the front or rear of the drive wheels.

For spraying water, in addition to opening and closing the switching valve, water may be sent out by a pump or the like. Further, by using a manual switch, the driver can be activated at the discretion of the driver, which is effective for braking and escape during an emergency. Further, by starting with a manual switch, a complicated control circuit may be omitted.

[0018]

According to the first and third aspects of the present invention, there is no dust pollution and environmental pollution, and it is possible to prevent slip without pollution. According to the second and fourth aspects of the present invention, the slip between the tire and the road surface can be further detected, so that ice particles, a mixture of water and ice particles, or water for generating ice particles is automatically generated. It is sprayed and can surely prevent slip.

[Brief description of drawings]

FIG. 1 is a system configuration example of a first embodiment of the present invention.

[Explanation of symbols]

 1 Vehicle 2 Tire 3 Wheel 4 Particle Dispersion Device 41 Container 42 Water 43 Switching Valve 44 Nozzle 45 Piping 46 Freezing Prevention Device 5 Slip Detection Device 6 Mixture of Water and Ice Grains or Ice Grain 7 Road Surface 8 Signal Line 9 Tire House 10 Tire and Road surface FR FR Signal line to particle spraying device for right front tire (not shown) RR Signal line to particle spraying device for right rear tire (not shown) RL Signal to particle spraying device for left rear tire (not shown) line

Claims (4)

[Claims] 1. An auxiliary device for preventing a vehicle from slipping during braking or driving of a vehicle, wherein ice particles, a mixture of water and ice particles, or water for producing ice particles is supplied to a tire and a road surface. A device for preventing slippage of a vehicle, which is provided with a device for spraying between the two. 2. An auxiliary device for preventing a vehicle from slipping during braking or driving of a vehicle, a device for detecting a slip between a tire and a road surface, an ice particle, or a mixture of water and an ice particle, Alternatively, a vehicle slip prevention auxiliary device comprising a device for spraying water for generating ice particles between a tire and a road surface. 3. A vehicle slip characterized by increasing the contact frictional force between the tire and the road surface by scattering or generating ice particles between the tire and the road surface during braking or driving of the vehicle. Prevention method. 4. The contact between the tire and the road surface is detected by detecting slip between the tire and the road surface when the vehicle is being braked or driven, and by spraying or generating ice particles between the tire and the road surface. A method for preventing slippage of a vehicle, characterized by increasing frictional force.