JPS5946570A - Preventor for vehicle running off road surface - Google Patents

Abstract

PURPOSE:To prevent the vehicle running-off the road securely by a method wherein a transmitter/receiver is arranged widthwise on the outside of a body facing downward to measure the height of a road surface outside the body and an alarm sounds when the value exceeds the specified value. CONSTITUTION:An ultrasonic wave transmitter/receiver 5 is mounted on the undersurface of a holder of a fender mirror 3 on the left of a body, namely opposite the driver's seat with the transmitting/receiving surface down the road surface. When the road surface G outside a wheel 6 is flat, a control circuit 10 does not output drive signal to an alarm 11 but when there is a ditch 12 or when a vehicle runs near the shoulder of a mountainous road or the like with the wheel 6 approaching the shoulder, a measured value signal obtained with the control circuit 10 exceeds a reference value signal and actuates an alarm 11 to warn an operator of the danger of the vehicle's running off the road.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wheel fall prevention device for a vehicle that can prevent a wheel from falling into a side ditch or running off the shoulder of the road.

Although conventional vehicles are equipped with fender mirrors, etc., they are not equipped with a device that can directly observe the road surface conditions directly under the vehicle body, making it an excellent vehicle when driving closely on narrow roads or mountain roads. It required a lot of sense, and for the average driver, it was dangerous, such as dropping a wheel into a ditch or veering off the shoulder of the road and falling into a ravine.

The present invention has been made based on the above-mentioned circumstances, and it is an object of the present invention to provide a thread ring prevention device for a vehicle that can reliably prevent wheel thinning accidents without requiring excellent in-vehicle sensation.

For this purpose, the present invention provides a distance measuring device having a transmitter/receiver of physical waves such as ultrasonic waves and microwaves, and an alarm means that is activated when the measured value of the distance measuring device is equal to or higher than a predetermined value. The above transmitter/receiver is located on the outer side of the vehicle body in the 1J direction, facing downward, and the height position on the outer side of the vehicle body is measured near the wheel passing position on the road surface. The present invention is characterized in that a warning is issued when there is a head difference to inform the driver of the danger of the thread ring.

In addition, regarding the point that j5 of the present invention uses physical waves such as ultrasonic waves and microwaves as a medium for distance measurement, it is disclosed in Japanese Patent Application Laid-Open No. 54
A related prior art can be found in Publication No. -45040.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings.

In FIG. 1, an ultrasonic transmitter/receiver 5 is installed on the lower surface of a small rudder 4 of a fender mirror 3 installed on the left side of a vehicle body 1 on the side opposite to the driver's seat 2. It is installed facing the road surface (J, facing the road surface G slightly outward from the passing position of the wheels 6 in the middle direction of the vehicle body 1) and emits ultrasonic waves as a measurement medium, and the reflected waves are emitted. It is made to look like a monkey at the reception.

The transmitter/receiver 5 is a part of a distance measuring device 7 having the configuration shown in FIG. Connected. The transmission circuit 8 and the reception circuit 9 are each connected to a control circuit 10, and an alarm 11 forming a part of the alarm means is connected to the control circuit 1.
connected to 0.

This controller 1 to roll circuit 10 is used to control the distance measurement function as well as the driving function of the alarm 11.
A predetermined operation is performed based on the time difference between the Hiro signal and the signal from the receiving circuit 9, and a distance measurement value No. 13 is issued.
The predetermined reference value 43 is compared with the measured value signal, and if the measured value 43 exceeds the reference value 8, a drive signal g is issued to the alarm 11.

In such a configuration, ]1 in control circuit 0
A value of 1 is set corresponding to the distance from the lower surface of the holder 4 of the fender mirror 3 to the road surface Q.

Note that the above reference value is set to a somewhat thick value H in consideration of some unevenness of the road surface. By doing this, rt! as shown in FIG. 3(a). If the road surface G approaching the outside of the wheel 6 is flat, the roll circuit 10 to the controller 1 does not issue a drive signal to the alarm 11.
If there is a gutter 12 as shown in the figure, the control circuit 1
Since the measured value signal obtained at 0 exceeds the base tp value times signal,
The alarm 11 is activated and warns the driver of the danger of a ditch accident. Figure 3 CC) shows the case of driving near the shoulder of a mountain road, but in this case as well, when the wheels 6 approach the shoulder of the road,
The transmitter/receiver 5 measures the distance in the direction of the valley.
The measured value in the control circuit 10 becomes very large and activates the alarm 11 in the same way as in the case described above.

In this embodiment, the transmitter/receiver 5 may be placed anywhere as long as it is on the outside in the width direction of the vehicle body 1, but in order to omit a special mounting member, it may be placed anywhere on the outside of the vehicle body 1 in the width direction. Place it in holder 4. In this case, either a mounting recess is formed in the lower surface of the holder 4 and the transmitter/receiver 5 is housed there, or a window hole is formed through which the transmitter/receiver surface faces.
It is preferable to house the transmitter/receiver fa5 inside, and by doing so, it is possible to improve the aesthetic appearance and protect the function of the transmitter/receiver.

Furthermore, the distance measuring device 7 is not limited to one that uses ultrasonic waves as its measurement medium, but may also use, for example, microwaves or laser beams.

Furthermore, in this embodiment, the transmitter/receiver 5 is placed at 1111a on the opposite side of the driver's seat 2, but as long as it is placed at least one place on the same side, any number of other layers may be placed. It may be placed on the seat 2 side.

As explained above, the present invention includes a distance measuring device having a transmitter/receiver of physical waves such as ultrasonic waves, and an alarm means that is activated when the measured value of the distance measuring device 5 is equal to or higher than a predetermined value. Since the above transmitter/receiver is located on the outside in the width direction of the vehicle body and directed downward, an alarm will be issued if there is a large drop in the road surface on the outside of the vehicle near the wheel passing position. When driving in passing on a mountain road, it is possible to reliably notify the driver that the wheels are approaching a side ditch or road shoulder. Therefore, even when there is no excellent feeling inside the vehicle, it is possible to prevent wheel groove accidents in advance and reliably.

[Brief explanation of drawings]

Fig. 1 is a rear view of a vehicle showing an embodiment of the present invention, Fig. 2 is a block diagram showing distance measurement @ positioning and alarm means, and Fig. 3 (
a) or 0) is an action explanatory diagram. DESCRIPTION OF SYMBOLS 1...Vehicle body, 3...Fender mirror, 4...Holder, 5...Transmitter/receiver, 6...Wheel, 7...Distance measuring device, 8...Transmission circuit, 9... ...Reception circuit, 10...
・Control circuit, 11...Alarm, 12...Gutter, G...Road surface. 6- Fig. 1 Fig. 2 (-2 Fig. 31

Claims (1)

[Claims] A distance measuring device having a transmitter/receiver for physical waves such as ultrasonic waves, and an alarm means that is activated when the measured value of the distance measuring device is equal to or higher than a predetermined value are provided. The M device is located on the outer side of the vehicle body in the middle direction and is directed downward, and is configured to issue an alarm when the road surface height is low near the wheel passing position on the outer side of the vehicle body. A device for preventing falling wheels for vehicles.