JPH068583B2 - Door scissors detector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door-scissors detection and detection device, and particularly to a door-scissors detection device suitable for a door that automatically opens and closes.

[Conventional technology]

A conventional device is a system in which a door rubber is hollow as described in JP-A-61-18558 and a light sensor is shielded by utilizing a change in air pressure in the rubber, or an elevator door is used. There was a system that used a safety shoe.

[Problems to be solved by the invention]

The above-mentioned prior art does not consider the simplification of the detection device. In both cases, the pressure detection mechanism is used as an intermediary to shield the optical sensor, resulting in poor detection sensitivity and a complicated structure. There was a problem that the cost became high.

An object of the present invention is to provide a door-scissor detection device capable of accurately detecting a door-scissor with a simple structure.

[Means for solving problems]

The above-mentioned object is to provide a light emitter on one side of a combination of at least one end of a door that can be opened and closed and a facing part facing the end, and provide a light receiving sensor on the other side, and set the optical axis of the light emitter to It is provided facing the light receiving sensor and inclined with respect to the vertical,
This is achieved by providing the light receiving sensor to receive the light of the light emitter when the door is closed.

[Action]

Since the optical axis of the optical sensor consisting of the light emitter and the receiving optical sensor is inclined, the optical axes do not match when the door is not closed, so it is possible to accurately detect the door scissors with a simple structure. it can.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 shows a double-opening side sliding door for a vehicle in this case. Door contact rubbers 3 and 4 are attached to the abutting portions of the side sliding doors 1 and 2, respectively. In the vicinity of the contact portion, the light receiving sensor 7 and the light emitter (hereinafter referred to as the light emitting sensor) 8 of the optical sensor are inclined with respect to the contact portion.
Is incorporated. 13 is a door lock switch, which is a side sliding door 1
Detects the closing of the, and operates just before it is completely closed.

FIG. 2 shows the details of the optical sensor section. Bracket 6 having an inclination angle θ on the internal bones 5a and 5b of the side sliding doors 1 and 2
a and 6b are attached, and the light receiving sensor 7 and the light emitting sensor 8 are attached to the brackets 6a and 6b. The brackets 6a and 6b are attached at positions where the light receiving sensor 7 and the light emitting sensor 8 face each other with the door tip rubbers 3 and 4 provided at the ends of the internal bones 5a and 5b abutting. The door-end rubbers 3 and 4 are provided with light-passing holes 9 and 10, respectively, which are light paths of the optical sensor. 1
Numeral 1 is a waterproof glass, which is installed in a downward slope to prevent entry.

FIG. 3 shows the details of the optical sensor section when an object is sandwiched between the side sliding doors 1 and 2. When the foreign matter 12 is sandwiched between the door tip rubbers 3 and 4, the door is closed. A gap is formed between the rubber tips 3 and 4, and the light passing holes 9 and 10 are displaced, so that the light from the light emitting sensor 8 does not enter the light passing hole 9 and is blocked by the door tip rubber 3.

FIG. 4 shows an example of the door-scissors detection circuit using the optical sensor attached as described above. The optical sensor in this case
It is turned off in the light-transmitting state and turned on in the light-shielding state.

First, when the side sliding doors 1 and 2 are open, the optical sensor 7,
8 is in a light-shielded state and is in an ON state, but at this time,
The door lock switch 13 is in the OFF state, so that
The contact 16 is also in the OFF state, and the on-delay timer 1
Even if 9 is not activated and the contact 20 is not turned on at a predetermined time, the relay 14 is not excited and the automatic reopening / closing device 15 is not activated. When the side sliding doors 1 and 2 start to close and the door stop switch 13 is turned on, the contact 16 is also turned on, the on-delay timer 19 is excited and starts operating, and the door stop light 17 is turned on and the vehicle side light 18 is turned on. Turn off the light. The return time of the on-delay timer is set to be slightly longer than the time until the side doors 1 and 2 are completely closed after the door closing switch 13 is turned on. As a result, the contact 20 is turned on after the side sliding doors 1 and 2 are completely closed, but it is turned off because the optical sensors 7 and 8 are in the light-transmitting state, and the relay 14 is not excited.

However, when the small foreign matter 12 is sandwiched between the side sliding doors 1 and 2 and the side sliding doors 1 and 2 are not completely closed, the optical sensors 7 and 8 are kept in the light-shielded state and always kept turned on. Since the closing switch 13 is turned on, the contact 16 is also turned on and the on-delay timer 19 is excited to start operating. After a predetermined time elapses, the contact 20 is turned on. As a result, the relay 14 is excited, the automatic reopening / closing device 15 is activated, and the door engine 21
And the side sliding doors 1 and 2 are opened and closed again.

Reference numeral 22 is a means switch for operating the door engine 21, and reference numeral 23 is a conductor switch for operating the door engine 21.

As described above, according to the present embodiment, it is possible to detect that a foreign object is sandwiched between the side sliding doors 1 and 2 with a pair of optical sensors 7 and 8 and yet to detect a foreign object with a small accuracy of 2 to 3 mm. Since it is also possible to detect, the mechanism is simple and the door scissors can be accurately detected.

〔The invention's effect〕

According to the present invention, there is an effect that door scissors can be detected with a simple structure and high accuracy.

[Brief description of drawings]

FIG. 1 is a front view of a side sliding door to which a door scissors detection device according to an embodiment of the present invention is attached, and FIG. 2 is a detailed view of a portion A when the side sliding door of FIG. 1 is completely closed. FIG. 3 is a detailed view of part A when the side sliding door of FIG. 1 is not completely closed, and FIG.
It is a figure which shows an example of the circuit diagram of the door scissors detection apparatus of the figure. 1, 2 ... Side sliding door, 7 ... Light receiving sensor, 8 ... Light emitting sensor, 9, 10 ... Light passing hole

Claims (1)

[Claims] 1. A light emitting device is provided on one of a combination of at least one end of a door that can be opened and closed and a facing part facing the end, and a light receiving sensor is provided on the other side, and an optical axis of the light emitting device is provided. It is provided to face the light receiving sensor and is inclined with respect to the vertical,
When the door is closed, the light receiving sensor is provided so as to be able to receive the light of the light emitter, and the door-scissors detecting device.