JP3013138B2 - Vehicle rear door opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear door opening / closing device for a vehicle, and more particularly to a technique for securing safety when a vehicle having a double-door type rear door is stopped on a road to perform cargo handling work.

[0002]

2. Description of the Related Art Conventionally, in a rear door opening / closing device of this kind, for example, a truck with a bumper body provided with a double door type rear door, when the truck is stopped on the road to carry out cargo handling work. Is carried out with the rear door open and the rear part opened.

[0003]

However, in such a rear door opening / closing device for a vehicle, a skilled worker performs the work with care, so that a problem rarely occurs. In the case of, when the rear door is easily opened in a double door, there is a problem that a bicycle or a pedestrian running on the side of the vehicle may collide with the door and cause an accident.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a rear door opening / closing device for a vehicle which secures safety when the vehicle is stopped on a road and cargo handling work is performed. With the goal.

[0005]

Means for Solving the Problems] Therefore, the present invention is seen
Open / closed state detection means for detecting the open / closed state of the sound-opening rear door , and provided on the left and right side surfaces of the vehicle, with respect to the vehicle lateral direction.
Object sensing means for sensing an object passing within substantially the same distance as the width of the rear door, and in the open state of the rear door detected by the open / closed state detection means, the object sensing means in the vehicle lateral direction. And the width of the rear door
After sensing objects passing through the substantially same distance, constituting the rear door opening and closing apparatus for a vehicle includes a warning means for issuing a warning, the
It is characterized by having done .

The object sensing means comprises an ultrasonic sensor. The ultrasonic sensor is attached to a front portion on the left and right side surfaces of the vehicle, and emits ultrasonic waves in the vertical direction to form a pair in the vehicle lateral direction.
Then, it may be configured to detect an object passing within a distance substantially equal to the width dimension of the rear door .

[0007]

With this configuration, when the vehicle is stopped on the road and cargo handling is performed, when the worker opens the double door, the open / closed state detection means detects the open state of the rear door, and the open / close state of the rear door is detected. The object sensing means provided on the left and right side portions operates. In this state, the vehicle lateral direction
When an object, for example, a bicycle or a pedestrian passes within the same distance as the width of the rear door , the object detecting means detects the passing object. Then, based on the detection of the object, the warning unit issues a warning by, for example, a buzzer or the like.

As described above, when the double door is opened, the pedestrian or the like passing through the side of the vehicle is warned and informed that the double door is opened, By notifying the worker that he / she is at the part, the danger that a bicycle or a pedestrian running on the side of the vehicle will collide with the opened door and cause an accident is avoided. This
Here, the object sensing means is provided at the rear door with respect to the lateral direction of the vehicle.
In order to detect objects passing within the same distance as the width dimension,
Objects that pass through the side of the vehicle only within the rear door opening / closing range
Only is sensed. Because of this, the possibility of contact with the rear door
This prevents objects that are completely free from being perceived. Also,
The object sensing means comprises an ultrasonic sensor, which is attached to a front portion of the left and right side surfaces of the vehicle , radiates ultrasonic waves in a vertical direction, and measures a width of a rear door in a lateral direction of the vehicle.
If it is configured to detect objects passing within the same distance as the law, the cost can be reduced compared to expensive laser sensors with limited directivity, and the distance from the sensing position to the double-door type rear door Can be taken sufficiently,
Safety can be improved. Further, since the ultrasonic waves are emitted in the vertical direction, the accuracy of sensing an object passing through the side portion of the vehicle can be improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, a rear door opening / closing device according to the present invention will be described with reference to FIGS. That is, the one shown in FIG. 1 shows a medium / small truck 1 with a bumper body. The loading portion of the truck 1 is covered with a roof wall 2 on a ceiling portion and side walls 3 on both side portions. Rear doors 4a are provided with hinged rear doors 5a and 5b which can be freely opened and closed by hinges. When the vehicle is stopped on a road and cargo handling work is performed, the doors 5a and 5b are opened and closed. It is performed in a state where it is open to the public.

On the upper part of the rear wall 4, an open / close switch 6 is provided as an open / close state detecting means for detecting the open / close state of the rear doors 5a, 5b.
b Output ON when open, OFF when closed. Also, in the front part of the side surface of the left and right rear wall 4 of the truck 1,
An ultrasonic sensor 7 is provided as an object detecting means for detecting an object passing through the side of the truck, for example, a bicycle or a pedestrian, and outputs an ON signal when the passing object is detected.

As shown in FIG. 2, a power supply 9 is connected to the ultrasonic sensor 7 when the opening / closing switch 6 is turned on, and the ultrasonic sensor 7 is operated to generate a warning device 8 as a warning means in response to a passing object detection signal. Warning is issued. The warning device 8 may be composed of, for example, a warning buzzer or an artificial voice warning device, and is attached to, for example, a front surface of a cargo bed roof portion.

Incidentally, the mounting position of the ultrasonic sensor 7 is as follows.
As shown in FIG. 3, it is preferable that the ultrasonic wave is attached in such a manner that it can detect a bicycle or a pedestrian passing through the side of the vehicle and emits ultrasonic waves in the vertical direction in order to increase the detection accuracy. Further, the sensing distance H of the ultrasonic sensor 7 may be substantially the same as the width of the rear door 5a. Thus, the ultrasonic sensor
7 is substantially equal to the width of the rear door 5a.
For example, the same distance as the width of the rear door in the lateral direction of the vehicle
Only objects passing through the inside, in other words, the rear door opening and closing range
Only objects that pass by the side of the vehicle are detected.
For this reason, objects that are unlikely to come into contact with the rear door
It is prevented from being sensed. Next, the operation of the present invention will be described based on the flowchart shown in FIG.

First, step 1 (hereinafter referred to as S1).
Then, the open / closed state of the rear doors 5a and 5b is determined by the door open / close S
Judge by ON / OFF of W. And door open / close SW
Is ON, the ultrasonic sensor 7 is turned on in S2.
The state becomes N and the operation of the ultrasonic sensor 7 is started. still,
In the closed state of the door whose door opening / closing SW is OFF, the ultrasonic sensor 7 is turned OFF in S6.

In step S3, the vehicle side portion is moved to an object, for example, by the sensing signal from the ultrasonic sensor 7 turned on.
It is determined whether a pedestrian or a bicycle has passed. When the ultrasonic sensor 7 detects a passing object and outputs a sensing signal, a warning is issued by the warning device 8 in S4.
If the passing object is not detected by the ultrasonic sensor 7, S
At 5, the warning is turned off.

As described above, the double doors 5a, 5
The warning device 8 warns the pedestrian that the b is open, and warns the cargo handling worker that the pedestrian is on the side of the vehicle, so that the opened rear door 5a,
It is possible to avoid the danger that a bicycle or a pedestrian running on the side of the vehicle will collide with 5b and cause an accident. In addition, since the ultrasonic sensor 7 is attached to the front portions of both sides of the vehicle and emits ultrasonic waves in the vertical direction, the cost can be reduced as compared with an expensive laser sensor or the like having a reduced directivity. Since the distance from the sensing position to the double doors 5a, 5b can be sufficiently secured, safety can be improved.

[0016]

As described above, according to the present invention,
An opening and closing state detecting means for detecting the open or closed state of the casement type rear door is provided on the left and right side portions of the vehicle, versus the vehicle transverse direction
The object detecting means for detecting an object passing within the same distance as the width of the rear door, and the vehicle detecting means for detecting the vehicle in the open state of the rear door detected by the open / closed state detecting means. Approximately the width of the rear door in the horizontal direction
Warning means for issuing a warning when an object passing through the distance is sensed , so that when opening the double door, the worker or pedestrian is warned, and the side door of the vehicle is placed on the rear door. The danger of collisions between running bicycles and pedestrians is avoided. Also, the object sensing means,
Objects that pass through the side of the vehicle only within the rear door opening / closing range
There is no possibility of contact with the rear door.
Is prevented from being sensed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a truck provided with a rear door opening / closing device for a vehicle according to the present invention.

FIG. 2 is a system diagram showing a vehicle rear door opening / closing device according to the present invention.

FIG. 3 is a diagram showing a state of emission of ultrasonic waves by an ultrasonic sensor.

FIG. 4 is a flowchart showing the operation of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Truck 2 Roof wall 3 Side wall 4 Rear wall 5a, 5b Rear door 6 Open / close SW 7 Ultrasonic sensor 8 Warning device

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60J 5/10 B60J 5/00

Claims (2)

(57) [Claims] 1. A opening and closing state detecting means for detecting the open or closed state of the casement type rear door is provided on the left and right side portions of the vehicle, the relative vehicle transverse direction
Object sensing means for sensing an object passing within substantially the same distance as the width of the rear door; and, in the open state of the rear door detected by the open / closed state detection means, the object sensing means in the vehicle lateral direction.
And a warning means for issuing a warning when an object passing within the same distance as the width of the rear door is detected. 2. The object sensing means comprises an ultrasonic sensor, which is attached to a front portion on the left and right side surfaces of the vehicle , emits ultrasonic waves in a vertical direction, and emits ultrasonic waves in front of the vehicle in a lateral direction.
2. The rear door opening and closing device according to claim 1, wherein an object that passes within a distance substantially equal to the width of the rear door is detected.