JPH0652027B2 - Automatic door opener - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door opening / closing device.

[0002]

2. Description of the Related Art Conventionally, as an automatic door opening / closing device for opening and closing a door by detecting a human body or the like by a light projector and a light receiver, there is one disclosed in Japanese Patent Publication No. 40-2116. As shown in FIG. 4, this device is provided with two light receivers 30 in a ceiling portion located on the upper side of the front surface of the door 20, and allows the projection light such as a projector or a light to be projected on the floor on the side of the front surface of the door 20. The light is reflected by the light ray reflecting portion 5 provided on the surface and is received by the opposite light receiver 30, and the door is opened and closed by blocking the projected light or the light receiving axis a of the light receiver 30 by a human body or the like. there were.

[0003]

However, in the automatic door having the above-mentioned structure, since the light ray reflecting portion 5 is provided on the side of the front surface of the door, the projection light passes through both lower sides of the front surface of the door.
Therefore, if a person or an object is located on the side of the front surface of the door, the person or the object may be detected and the door may be opened or closed unnecessarily. For example, in addition to people trying to pass through the door when the passenger seat as the automatic door of the through passage of the Shinkansen is close to the door, also to detect the limb of a person sitting on the passenger seat become. Further, in a coffee shop, a retail store, or the like, when a passenger seat or a product space is provided on the side of the front surface of the automatic door, a human body entering the passenger seat or the product space is also detected. to solve this problem,
If you do not place passenger seats or product space on the side of the front of the door, you will not be able to effectively use the space on the side of the automatic door, especially if the space where the automatic door is installed is limited. Will occur. Accordingly, the present invention is not to detect a like human body simply close the sides of the front of the door, by detecting only the human body or the like close to the front of the door reliably, effective use of lateral space of the front surface of the door It is a technical object to provide an automatic door opening / closing device that can be installed.

[0004]

Means for Solving the Problems] hand stage for solving the above technical problem, to receive the light projector and the projection light emits ceiling or the transom to a linear projected light mounted door upper
The light receiver detects the human body, and based on this detection signal
Te, the automatic door opening and closing device for opening and closing the door, in the lower door front reflective surface for reflecting the projection light of the projector central
Of is provided on the floor side, Ri is Na equals the incident angle and reflection angle with respect to the reflective surface, and wherein the lower sides of the door front
The projector and the light receiver are provided so that the projection light from the projector does not pass through .

[0005]

According to the action-mentioned means, since a reflective surface for reflecting the projection light of the projector on the floor side of the center of the front surface of the door, the sensing region formed by the reflecting surface and the emitter and receiver are door front
Of Ri Do an inverted triangle as will lower is focused on the floor side of the center of the front surface of the door, conversely, the door front face of the lower sides and upward in the
The center is the non-detection area. At this time, since the human body or the like is often detected by the detection region existing in the lower portion of the front surface of the door than the front of <br/> top of the door, a passenger seat and product space such as on both sides of the front surface of the door even installation was, both sides toward the front of the door will be away is enough detection area becomes lower, since there is no possible to detect the human body or the like intrusive the audience and product space such, the effective space of the door side It can be used.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of an automatic door opening / closing device according to the present invention, in which a ceiling light B existing above a door A of a building or the like is irradiated with projection light which is a linear light obliquely downward. Floodlight 1
and a, is obtained by installing a light receiver 1b for receiving the reflected light reflected on the floor surface C in the vicinity of the front center of the irradiated projection light the door A from the projector 1a. And this floodlight 1
The photoelectric reflection switch composed of a and the light receiver 1b is electrically connected to the converter 3 so that a detection signal emitted from the photoelectric reflection switch is received by the converter 3. A command is issued from the converter 3 to a door engine controller 4 that drives the door A to open and close. In this case, the optical axis P1 from the light projector 1a to the light receiver 1b through the floor surface C has the same incident angle and reflection angle with respect to the floor surface C, and therefore the detection area is on the line of a symmetrical inverted triangle . Has become. The non-detection area is
It is on the lower both sides in front of the door A and in the upper center. With such a configuration, when a human body or the like enters the front of the door A and interrupts the optical axis P1, the light projector 1a and the light receiver 1b.
The photoelectric reflection switch composed of and detects the presence of a human body or the like , sends a detection signal to the converter 3, and receives the signal, and the converter 3 receives the detection signal.
Sends an open command to the door engine controller 4 to open the door A. In addition to such a basic operation, according to the first embodiment, for example, in the case where the wagon 6 provided with products is installed adjacent to the front side of the door A as shown in FIG. , The front and lower sides of the front of the door A are non-detection areas.
Since the Tsu, without detecting a human body or the like approaching the wagon 6, will be able to detect only human body or the like close to the front of the door A, so that the effective use of the space on the side of the door A can be achieved.

[0007] Figure 2 shows a second embodiment of an automatic door closer according to the present invention, the ceiling B existing in the upper front of the arranged door A in the through passage of the rail vehicle Shinkansen, etc., the Projector 1a and receiver 1b having the same configuration as in the first embodiment.
And are installed. In the second embodiment as well, the light receiver 1b is passed from the light projector 1a through the floor surface C.
The angle of incidence and the angle of reflection of the optical axis P1 with respect to the floor surface C are equal to each other, and the detection area is on the line of a symmetrical left and right triangle. Therefore, even in the case of the configuration of the second embodiment, the same basic operation as in the first embodiment is performed, and as shown in the figure, the passenger seats 7 are arranged adjacent to both sides in front of the door A. Even when installed, the door A of the passenger sitting in the passenger seat 7
It is possible to detect only the human body or the like approaching the front of the door A without detecting the throwing of the hands or feet to the both sides of the lower part in the front.

FIG. 3 shows a third embodiment of the automatic door opening / closing apparatus according to the present invention, in which a door A of a door A is installed against a ceiling B of a building A in front of and above the door A. The light projector 1a and the light receiver 1b are installed at the upper positions outside both front sides to form an optical axis P1 having a large incident angle and a large reflection angle with respect to the floor surface C, and at the same time, on both inner sides in front of the door A. The light projector 2a and the light receiver 2b are installed at the upper position to form an optical axis P2 having a small incident angle and an equal reflection angle with respect to the floor surface C. Then, a photoelectric reflection switch composed of the light projector 1a and the light receiver 1b and / or the light projector 2a.
The detection signal emitted from the photoelectric reflection switch 2 including the light receiving device 2b and the light receiving device 2b is received by the converter 3, and the door engine controller 4 causes the door A
Is designed to be driven fully open. With such a configuration, when a human body or the like enters in front of the door A and blocks only the optical axis P1, the photoelectric reflection switch including the projector 1a and the light receiver 1b detects the presence of the human body or the like. And sends a detection signal to the converter 3, and the converter 3 that receives the signal determines that a human body or the like has entered from the front lateral direction of the door A, and sends a full open command to the door engine controller 4.
Fully open door A. On the other hand, when a human body or the like enters in front of the door A and blocks the two optical axes P1 and P2 at the same time, both photoelectric reflection switches including the light projector 1a and the light receiver 1b and the light projector 2a and the light receiver 2b are turned on. Both of them send detection signals to the converter 3, and the converter 3 receiving these signals at the same time determines that a human body or the like has entered from near the front center of the door A and sends a half-open command to the door engine controller 4. Then, open the door A halfway. And, in this third embodiment as well, the door A
Since there is no detection area on both lower sides in front of
Only the human body or the like approaching the front of the vehicle can be detected.

[0009]

According to the present invention, since a reflective surface for reflecting the projection light of the projector on the floor side of the center of the front door, the front door
Even if passenger seats and product spaces are installed on both lower sides of the person, it is possible to reliably detect only human bodies approaching the front of the door without detecting human bodies entering the seats and product space. It is possible to effectively utilize the space on the side.

[Brief description of drawings]

FIG. 1 is a schematic front view showing a first embodiment of an automatic door opening / closing device according to the present invention.

FIG. 2 is a schematic front view showing a second embodiment of the automatic door opening / closing device according to the present invention.

FIG. 3 is a schematic front view showing a third embodiment of the automatic door opening / closing device according to the present invention.

FIG. 4 is a schematic front view showing a conventional example.

[Explanation of symbols]

 1a Emitter 1b Receiver 2a Emitter 2b Receiver A Door B Ceiling C Floor

Claims (1)

[Claims] 1. A ceiling or invisible mount on the top of the door
A human body or the like is detected by a light projector that emits linear projection light and a light receiver that receives the projection light, and based on this detection signal
Te, the automatic door opening and closing device for opening and closing the door, in the lower door front reflective surface for reflecting the projection light of the projector central
Of is provided on the floor side, Ri is Na equals the incident angle and reflection angle with respect to the reflective surface, and wherein the lower sides of the door front
An automatic door opening / closing device, characterized in that the projector and the light receiver are provided so that the projection light from the projector does not pass through .