JP2003193745A - Automatic door - Google Patents

Abstract

(57) [Summary] PROBLEM TO BE SOLVED: To secure safety at the time of opening and closing an automatic door at low cost while securing a good appearance. An opening / closing door for opening and closing an entrance, a drive motor for moving the opening / closing door at a predetermined speed, a start sensor for detecting an approaching object, and a start sensor
And a controller for controlling the drive motor based on the detection signal from the controller to move the opening / closing door 13 to constitute the automatic door 11. A detection sensor 21 is provided for detecting the entry of an object into the movement area A when the opening / closing door 13 is moved to open the entrance. Open / close door 1 to open the entrance
When moving the object 3, when it is determined that an object has entered the movement area A based on the detection signal from the detection sensor 21, the drive motor is controlled by the controller, and the opening / closing door 13 is set to a speed lower than a predetermined speed. Be moved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door which is installed at a doorway of a building and automatically opens and closes a door by detecting a passerby or the like.

[0002]

2. Description of the Related Art Generally, an automatic door is provided at a doorway of a building, and the door is automatically opened / closed by detecting an approaching passerby. Here, the structure of automatic doors that have been installed a lot in recent years will be described by taking the structure shown in FIG. 4 as an example.

In the figure, reference numeral 1 is a double-opening type automatic door. This automatic door 1 has a drive unit 2 installed at an upper part of an entrance / exit of a building, and an opening / closing door 3 which is opened and closed by the drive unit 2.
Fix plates 4 are provided on both sides of the open / close doors 3, and the open / close doors 3 move along the fix plates 4. Further, on the front and back of the automatic door 1, a start sensor 5 for detecting an approaching person or object is provided on the upper side thereof, and when the start sensor 5 detects the person or object, the drive unit 2 is provided. A drive motor (not shown) is driven by a controller provided inside,
The opening / closing door 3 moves along the fix plate 4 so that the doorway is opened.

[0004]

By the way, when a passerby or an object approaches and the opening / closing door 3 moves along the fixing plate 4 to open the entrance / exit, a person is present in the moving area of the opening / closing door 3. , Open / close door 3 that moves when there is an object
May collide with people and things. Therefore, the opening and closing door 3
Opening and closing door 3 by installing a protective fence that surrounds the movement area when opening
However, installing such a protective fence not only increases the cost significantly but also makes it unattractive.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an automatic door which secures a good appearance while ensuring safety when opening and closing the opening / closing door at low cost. .

[0006]

In order to achieve the above object, an automatic door according to a first aspect of the present invention is an opening / closing door for opening / closing an entrance / exit, and moving the opening / closing door at a predetermined speed to open / close the entrance / exit. An automatic door having a drive unit, a start sensor for detecting an approaching object, and a controller for controlling the drive unit to move the opening / closing door based on a detection signal from the start sensor, The controller has a detection sensor for detecting entry of an object into a moving area of the opening / closing door when the opening / closing door is moved to be opened, and the controller is provided within the moving area based on a detection signal from the detection sensor. When it is determined that an object has entered, the drive unit is controlled to move the opening / closing door at a speed lower than the predetermined speed.

As described above, when an object such as a person or an object enters the moving area of the opening / closing door when the opening / closing door is moved to open the entrance / exit, the object is detected by the detection sensor, and the controller opens / closes the opening / closing door. Since the moving speed of is slowed down, a person who has entered the moving area of the opening / closing door can leave the moving area without hitting the opening / closing door, and a person who brings an object into the moving area can Objects can be moved away from the moving area without hitting the door. Also, at this time, since the opening / closing door moves at a low speed without stopping, the entrance / exit is surely opened, so that a passerby attempting to pass through the opening / closing door may collide with the opening / closing door. It is possible to prevent any trouble.

According to a second aspect of the present invention, in the automatic door according to the first aspect, the detection sensor is an optical sensor that detects the presence or absence of an object by detecting the reflected light of the light emitted to the moving area. It is characterized by that. In other words, as the detection sensor, an optical sensor with excellent detection ability to detect the presence or absence of an object based on the reflected light is used, so that the entry of the object into the moving area of the open / close door can be reliably detected, and further safety Improvement is achieved.

The automatic door according to claim 3 is the automatic door according to claim 1 or 2, wherein the opening / closing door is
The door is slidable along the doorway, and the door is opened and closed by sliding the opening / closing door. In this way, the opening / closing door is slid at a low speed due to the entry of an object into the moving area of the opening / closing door, so that a problem caused by a person or object colliding with the sliding opening / closing door is eliminated, and the sliding door type automatic The safety of the door is improved.

An automatic door according to a fourth aspect is the automatic door according to the first or second aspect, wherein the opening / closing door is
It is characterized in that it can be swung about a vertical axis at a side portion of the doorway, and the doorway is opened and closed by rocking the opening / closing door. That is, since the opening / closing door is swung at a low speed due to the entry of an object into the moving area of the opening / closing door, the problem caused by a person or object colliding with the swinging and moving opening / closing door is eliminated, and the swing door type automatic The safety of the door is improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An automatic door according to an embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 11 is an automatic door of this embodiment. The automatic door 11 has a drive unit 12 installed at an upper part of an entrance / exit of a building and an opening / closing door 13 which is opened and closed laterally along the entrance / exit by the driving unit 12. Fixing plates 14 are provided on both sides of the fixing plate 14, and the opening / closing door 13 moves along these fixing plates 14.

A start sensor 15 for detecting an approaching person or object is provided on the front and back of the automatic door 11, and when a person or an object is detected by the start sensor 15, the drive unit is driven. The drive motor 23 is driven by the controller 22 described later provided in the 12
The opening / closing door 13 moves along the fix plate 14 so that the doorway is opened.

Further, in the moving area A of the opening / closing doors 13 when the opening / closing doors 13 are opened, detection sensors 21 such as, for example, optical sensors are provided above the moving areas A, respectively. Door 13
The presence / absence of an object in the moving area A is detected.

Next, the function of the automatic door 11 having the above structure will be described with reference to the functional block diagram shown in FIG. In the figure, reference numeral 22 is a controller installed in the drive unit 12. The controller 22 is connected to the start sensors 15 provided on the upper and lower sides of the automatic door 11, respectively.
The detection signal is transmitted from.

A detection sensor 21 for detecting the presence / absence of an object in the moving area A of the opening / closing door 13 is connected to the controller 22, and a detection signal is transmitted from the detection sensor 21. There is. Controller 2
2, a power unit (driving unit) 24 that supplies driving power to the driving motor (driving unit) 23 is connected, and the driving power supplied from the power unit 24 to the driving motor 23 is controlled by a control signal from the controller 22. It is supposed to be done.

According to the automatic door 11 as described above, when an object such as a passerby approaches and enters the activation area B (see FIG. 2) which can be detected by the activation sensor 15, the activation sensor 15 detects the object. It detects and transmits the detection signal to the controller 22.

When the detection signal is transmitted from the activation sensor 15, the controller 22 outputs a control signal to the power unit 24 to open the opening / closing door 13 so that the power power is supplied from the power unit 24 to the drive motor 23. As a result, the drive motor 23 is driven, the opening / closing door 13 moves at a predetermined speed set in advance, the entrance / exit is opened, and passage at this entrance / exit becomes possible.

Here, as described above, when an object such as a person or an object enters the moving area A of the opening / closing door 13 when the opening / closing door 13 is moved and the entrance is opened, the detection sensor 21 detects the object. The detection signal is transmitted to the controller 22. As described above, when the detection signal is transmitted from the detection sensor 21, the controller 22 determines that an object such as a person or an object has entered the movement area A, and transmits the control signal to the power unit 24 in the slow mode. .
Then, when the control signal is output from the controller 22 to the power unit 24 in the slow mode, the drive power from the power unit 24 to the drive motor 23 is reduced, and the moving speed of the opening / closing door 13 becomes lower than the predetermined speed described above. Be moved.

That is, since the opening / closing door 13 is moved at a low speed, a person who has entered the moving area A of the opening / closing door 13 can move away from the moving area A without hitting the opening / closing door 13 or move. A person who brings an object close to the area A can move the object away from the moving area A without hitting the opening / closing door 13. At this time, the opening / closing door 1
No. 3 moves at low speed without stopping, that is, slowly,
The doorway is also surely opened, and a passerby trying to pass through the doorway in anticipation of the opening / closing door 13 will not collide with the doorway 13.

As described above, according to the automatic door 11 described above, when the opening / closing door 13 is moved to open the entrance / exit, the moving area A of the opening / closing door 13 is filled with an object such as a person or an object. When the vehicle enters, the object is detected by the detection sensor 21, and the controller 22 opens and closes the door 13.
Since the moving speed of A is reduced, a person who has entered the moving area A of the opening / closing door 13 can leave the moving area A without hitting the opening / closing door 13, and the moving area A
A person who brings an object inside can move the object away from the moving area A without hitting the opening / closing door 13.

Further, at this time, since the opening / closing door 13 moves at a low speed without stopping, the entrance / exit is surely opened, and a passerby trying to pass through the entrance / exit is expected to open and close. It is possible to surely prevent a problem such as a collision with the door 13.

That is, as compared with the case where the protective fence is installed so as to surround the moving area A of the opening / closing door 13, while ensuring a good appearance, the safety at the time of opening / closing the opening / closing door 13 is secured at low cost. Therefore, smooth traffic can be enabled. Moreover, since the detection sensor 21 is an optical sensor having an excellent detection capability for detecting the presence or absence of an object based on the reflected light, it is possible to reliably detect the entry of the object into the moving area A of the opening / closing door 13. Therefore, the safety can be further improved.

In the above example, the pair of open / close doors 13
The double-opening type in which the door is moved to open and close the entrance has been described as an example, but it is also applicable to the single-opening type in which one opening / closing door 13 is moved to open and close the entrance. Of course, instead of the sliding door type in which the door 13 is slid along the fix plate 14, the opening / closing door 13 can be adapted to a swinging door type in which the vertical axis on the side of the doorway is pivoted. .

[0024]

As described above, according to the automatic door of the present invention, the following effects can be obtained. Claim 1
According to the described automatic door, when an object such as a person or an object enters the moving area of the opening / closing door when the opening / closing door moves to open the doorway, the object is detected by the detection sensor and opened / closed by the controller. Since the moving speed of the door is slowed down, a person who has entered the moving area of the opening / closing door can leave the moving area without hitting the opening / closing door, and a person who brings an object close to the moving area, The object can be moved away from the moving area without hitting the door. Also, at this time, since the opening / closing door moves at a low speed without stopping, the entrance / exit is surely opened, so that a passerby attempting to pass through the opening / closing door may collide with the opening / closing door. It is possible to surely prevent such trouble. In other words, compared to the case where a protective fence is installed so as to enclose the moving area of the opening / closing door, the safety when opening / closing the opening / closing door can be secured at a low cost while ensuring a good appearance, and smooth passage is possible. Can be

According to the automatic door of the present invention, as the detection sensor, an optical sensor having an excellent detection capability for detecting the presence or absence of the object based on the reflected light is used. It is possible to reliably detect the entry of the vehicle and further improve the safety.

According to the automatic door of the present invention, since the opening / closing door is slid at a low speed due to the entry of an object into the moving area of the opening / closing door, a person or an object may collide with the sliding opening / closing door. It is possible to provide a highly safe sliding door type automatic door in which the problems caused by the above are eliminated.

According to the automatic door of the present invention, since the opening / closing door is swung at a low speed due to the entry of an object into the moving area of the opening / closing door, a person or an object is swung to move the opening / closing door. It is possible to provide a highly safe hinged door type automatic door in which problems caused by collisions are eliminated.

[Brief description of drawings]

FIG. 1 is a schematic front view of an automatic door for explaining a schematic configuration of an automatic door according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the automatic door for explaining the schematic configuration of the automatic door according to the embodiment of the present invention.

FIG. 3 is a functional block diagram illustrating functions of the automatic door according to the embodiment of the present invention.

FIG. 4 is a perspective view of an automatic door for explaining the configuration and structure of a general automatic door.

[Explanation of symbols]

11 automatic doors 13 open / close door 15 Start sensor 21 Detection sensor 22 Controller 23 Drive motor (drive unit) 24 Power unit (drive unit) A movement area

Claims (4)

[Claims] 1. An opening / closing door for opening / closing an entrance / exit, a drive unit for moving the opening / closing door at a predetermined speed to open / close the entrance / exit, an activation sensor for detecting an approaching object, and a detection signal from the activation sensor. An automatic door having a controller for controlling the drive unit to move the opening / closing door based on the above, wherein an object to a moving area of the opening / closing door when the opening / closing door moves to open the doorway When the controller determines that an object has entered the moving area based on a detection signal from the detection sensor, the controller sets the opening / closing door to a speed lower than the predetermined speed. An automatic door, characterized in that the drive unit is controlled so as to be moved. 2. The automatic door according to claim 1, wherein the detection sensor is an optical sensor that detects the presence or absence of an object by detecting the reflected light of the light emitted to the moving area. 3. The opening / closing door is slidable laterally along the doorway, and the doorway is opened / closed by sliding the opening / closing door. Automatic door as described. 4. The opening / closing door is swingable about a vertical axis on a side portion of the entrance / exit, and the entrance / exit is opened / closed by swinging the opening / closing door. The automatic door according to claim 1 or 2.