JP2000257336A - Power door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economical power door, by which a passerby is not pinched by surely detecting a contact between the passerby and a front end within a wide range and which is safety and is installed easily. SOLUTION: In the power door automatically opening and closing a movable door 10 by a touch button detecting the access of a passerby, a pressure sensitive switch 20 detecting contacts with persons is mounted to approximately the whole at the opening side end of the door 10, and a control section controls the rotation of a motor so as to open the door when the contact with the person of the front end section of the door 10 is detected by the pressure sensitive switch 20. The pressure sensitive switch 20 is formed by holding a pair of electric conductive members 21, 22 between the front end section of the door and a holding member 23 composed of an elastic body, and the switch is closed by the contact with the person of the projecting section 23. An output from the pressure sensitive switch 20 is transmitted to the control section by a wireless manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door for automatically opening and closing a door by detecting the proximity of a person passing through the door, and more particularly to an improved automatic door for further improving its safety.

[0002]

2. Description of the Related Art Conventionally, at an entrance where a large number of people enter and exit, for example, a department store, a store, a bank, etc., an automatic door which detects the proximity of a person passing through the door and automatically opens and closes the door is attached. ing. Generally, such an automatic door is provided with a translucent door plate that can be opened and closed by a moving mechanism such as an electric motor or a pinion rack mechanism at an entrance, and detects a person approaching the door to control the opening and closing operation. It is controlled by control means. In addition, the proximity of the person passing through the door,
For example, a mat switch arranged on the floor of the entrance, a proximity switch provided above the entrance and detecting the proximity of a person using sound waves or heat rays, a proximity switch using a change in capacitance due to the proximity of a person. The switch is automatically detected by a proximity switch using light reflection or a photoelectric switch.

On the other hand, at an entrance where a relatively small number of people enter and exit, instead of the above proximity switch, a so-called push button or touch button, which is pressed or touched by a person trying to pass through the door, is used. A part of the door is provided, and when a person presses the push button or the touch button, the proximity of a person passing through the door is detected to control the opening and closing of the door.

Conventionally, as shown in FIG. 5, for example, a light emitting portion 2 of an auxiliary photoelectric switch is provided adjacent to the automatic door 1 and a light receiving portion 3 opposed to the auxiliary photoelectric switch through an entrance. Thus, a person staying between the doors for a long time is detected, and the closing operation is extended for a predetermined time to achieve safety. In FIG. 5, the light detected by the auxiliary photoelectric switch is indicated by a broken line.
In the following description, the term “proximity switch” is used in a concept that includes the above-described push button and touch button in addition to the automatic proximity switch.

[0005]

In an automatic door having a proximity switch according to the related art as described above, which automatically opens and closes, a person passing through the door often opens and closes the front end of the door which automatically opens and closes. It happens that it is pinched by the part. In particular, under the recent aging of recent years, the elderly and other slow-moving people will close the door before passing through the door, so clothes and parts of the body will be interposed. In some cases, it may cause injury or injuries.

Further, in the prior art shown in FIG. 5, the area where the safety is ensured is limited by the provision of the auxiliary photoelectric switch (specifically, only on a straight line shown by a broken line in the figure). This is not always sufficient when the area becomes an area, for example, when a part of clothes is sandwiched. The auxiliary photoelectric switch of the prior art is mounted with the light projecting portion 2 as a stud and the light receiving portion 3 constituting the other is mounted on an opposing column. In other words, since it is necessary to install them at a distance from each other,
Wiring work becomes difficult. Specifically, as shown by a dashed line in the figure, the light projecting unit 2 and the light receiving unit 3 of the auxiliary photoelectric switch are
It was necessary to route to the auxiliary photoelectric amplifier 4.

In view of the above-mentioned problems in the prior art, the present invention provides an improved automatic door which further improves safety and prevents a passing person from being caught in the open end. The purpose is to provide.

[0008]

According to the present invention, in order to attain the above object, first, a door is opened and closed by a moving mechanism in accordance with a detection signal from a proximity switch for detecting the proximity of a person passing through the door. Automatic door provided with a control device for automatically performing the above, furthermore, a detection means for detecting contact of a person passing through the door is provided at almost all of the open side end of the door, and a person passing therethrough by the detection means is provided. An automatic door is proposed in which the control device opens the door when it detects that the door has come into contact with the open end of the door.

According to the present invention, in the automatic door, the detecting means includes a wireless transmitter, and the wireless transmitter contacts the open end of the door detected by the detecting means. Is transmitted to the control device wirelessly.

Further, according to the present invention, in the automatic door described above, an elastic member having a part partially protruding outward is attached to an open end of the door, and And a pressure-sensitive switch formed between the inside of the elastic member and the open end of the door.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, FIG. 2 shows a front view (FIG. 2A) and a side view (FIG. 2) of a configuration of an automatic door 10 according to an embodiment of the present invention.
(B)) and a top view (FIG. 2 (C)). The automatic door 10 is formed of a plate made of a light-transmitting member such as glass. It will be apparent to those skilled in the art that the automatic door 10 may be formed of, for example, a wood plate that does not necessarily have a light-transmitting property.

In this figure, as a proximity switch for detecting the proximity of a person passing through the door, a proximity switch for detecting the proximity of a passing person by himself / herself pressing the touch button 11 is employed here. Examples are shown. However, as described above, the present invention is not limited to the proximity switch of the type that presses the touch button by itself, but also includes a mat switch disposed on the floor of the entrance, and a switch provided above the entrance. Proximity switches that detect the proximity of people using sound waves or heat rays, proximity switches that use changes in capacitance due to the proximity of people, and proximity switches that use light reflection or photoelectric switches. It is also possible to configure by a device that detects the above.

The automatic door 10 is slidably mounted on a rail provided on the floor F, and can be moved in a direction indicated by an arrow in the figure by, for example, a pinion rack mechanism (not shown). Installed. According to the present invention, a detection sensor (a pressure-sensitive switch 20) for detecting contact of a passing person with the door 10 is provided almost entirely on the open side end (the left end in the figure) of the automatic door 10. ) Is attached.

Next, FIG. 3 of the accompanying drawings shows a specific structure of the pressure-sensitive switch 20, which is a detection sensor for detecting contact of the passing person with the door 10 by the above-mentioned person. As is clear from this figure, the pressure-sensitive switch 20 includes a pair of opposing conductive members 21 and 22, and these conductive members 21 and 22 are disposed on both sides thereof.
5 is held at a predetermined distance. The conductive members 21 and 22 are formed by, for example, forming a thin film of a good conductive metal on the surface of a flexible resin material by vapor deposition or the like.

The pressure-sensitive switch 20 is attached to the open side end of the door 10 by a holding member 23 having an elastic member such as rubber formed in a substantially U-shaped cross section. I have. Further, as is apparent from the drawing, the holding member 23 has a protruding portion 2 further protruding from its end face.
7, thereby forming a so-called switch mechanism. As will be described later, a transmitter 30 for wirelessly transmitting the open / closed state of the pressure-sensitive switch by reference numeral 30 is provided on a part of the door 10, for example, on the back of the door 10. Attached to.

The operation of the automatic door 10 provided with the pressure-sensitive switch 20, which is the detection sensor described in detail above, will be described with reference to FIG. FIG. 1A shows an automatic door 1.
0 shows a state in which a part of the human body is not in contact with the leading end portion, and as is apparent from the figure, in this state, the pressure-sensitive switch is open between the conductive members 21 and 22. ing. On the other hand, FIG. 1B shows a state in which a part B of the human body is in contact with the tip. In this state, as is clear from the figure, a part of the holding member 23 made of the elastic member, particularly the protruding part 27 thereof is pressed by the contact with the part B of the human body. It bends and comes into contact with the other conductive member 22. That is, the pressure-sensitive switch is in a closed state.

Next, an example of the control unit 40 for controlling the opening and closing of the automatic door 10 described above is shown in FIG. As shown in the figure, the transmitter 30 provided in a part of the door 10 transmits a radio signal indicating the state when the pressure-sensitive switch 20 serving as the detection sensor is closed.

On the other hand, the control unit 40 includes an antenna 41 for receiving the radio signal and a receiver 42, a clock generator 44 for generating a predetermined clock signal, and further includes a control circuit 43. I have. The control circuit 43 includes a clock signal from the clock generator 44, an output signal from the receiver 42, a detection signal from the touch button 11, and a sliding door (not shown) as described above. An output signal from a position detector 50, which is constituted by a microswitch provided on a part of a rail for guiding as much as possible and detects that the automatic door 10 is completely closed, is input.

A control output from the control circuit 43 constituting the control unit 40 is input to a motor control circuit 60, and the motor control circuit 60 controls the power output from a power source (for example, an AC power source) 70. Is converted into a predetermined motor current and supplied to the motor 80, whereby the rotation stop operation is controlled. Note that the rotation of the rotation shaft of the motor 80 is converted into the opening and closing operation of the automatic door 10 by a moving mechanism such as a pinion rack mechanism, so that the automatic opening and closing of the automatic door 10 is performed as in the related art. It is.

Next, the control unit 4 whose configuration has been described above will be described.
The operation of opening and closing the automatic door 10 according to 0 will be described below. In a normal operation, the control circuit 43 detects the proximity of a passing person when the passing person touches the touch button 11 of the automatic door 10, and thereby the automatic door 10
The motor 80 is controlled so as to open. When it is detected that a predetermined time has elapsed by counting the clock signal from the clock generator 44, the door 1
The motor 80 is controlled so that 0 is closed. The control circuit 43 determines from the output signal from the position detector 50 that the door 10 has been completely closed,
The operation of the motor 80 is stopped. In normal operation,
The above operation is repeated.

If the tip of the automatic door 10 comes into contact with a passing person for some reason during the closing operation, the pressure-sensitive switch 20 is closed as already described with reference to FIG. Thus, the transmitter 30 transmits a wireless signal, and the control unit 40 receives the wireless signal by the receiver 42. Then, the control circuit 43 reverses the rotation direction of the motor 8 even during the closing operation, and controls the automatic door 10 to open.

Thereafter, when the state of contact with the passing person at the tip is released, the pressure-sensitive switch 20 returns to the open state again, and the transmitter 30 stops transmitting the radio signal. Thereby, for example, after detecting that the predetermined time has elapsed again, the control unit 40 controls the motor 80 so that the door 10 is closed.
Control. At this time, the output signal from the position detector 50 for detecting that the automatic door 10 is completely closed so that the door 10 does not open even if the front end of the automatic door 10 abuts on the opposing column or wall surface. , That is, a function of invalidating the signal from the receiver 42 that receives the wireless signal by the output signal from the position detector 50 is provided in the control unit 40. Alternatively, the automatic door 10 may be attached so that the pressure-sensitive switch 20 does not operate even when the automatic door 10 is completely closed.

As described above, the signal from the pressure-sensitive switch 20 for detecting the contact between the open end of the automatic door 10 and a person is transmitted to the transmitter 30 regardless of the conventional connection using a wire or the like.
Or by using the receiver 40 and wirelessly, the moving door can be easily attached without performing complicated wiring work as in the related art. Further, the pressure-sensitive switch 20 for detecting contact with a person can be provided so as to cover almost the entire open end of the automatic door 10 because of its structure. It is possible to detect contact with a person more entirely and more reliably.
Therefore, higher security can be obtained.

In the above-described embodiment, the transmission of the signal from the pressure-sensitive switch 20 has been described as a wireless signal, but it is also possible to use, for example, a sound wave or an infrared ray. Therefore, the term “wireless signal” is used in a broad concept including these sound waves, infrared rays, etc., including the claims.

Further, the pressure-sensitive switch 20 described in detail above
Can be manufactured relatively inexpensively from its structure, and the attachment of the automatic door 10 to the open end of the automatic door 10 can be performed, for example, by bonding the elastic member such as the rubber together with an adhesive, etc. The attachment member can be easily attached by the holding member 23 formed in the shape of "". Therefore, it is economically advantageous.

[0026]

As is apparent from the above detailed description, according to the automatic door of the present invention, it is possible to reliably detect a wide range of contact between the open end and the passing person. Therefore, it is possible to provide an excellent automatic door with a further improved safety without passing persons being pinched. Further, the automatic door according to the present invention is easy to install, and is economically advantageous.

[Brief description of the drawings]

FIG. 1 is a partially enlarged cross-sectional view illustrating a pressure-sensitive switch, which is a feature of an automatic door according to the present invention, in a different state for explaining the operation thereof.

FIG. 2 is a front view showing the entire structure of the automatic door according to the present invention;
It is a side view and a top view.

FIG. 3 is a partially enlarged sectional perspective view showing a structure of a pressure-sensitive switch which is a feature of the automatic door according to the present invention.

FIG. 4 is a circuit block diagram illustrating an example of a control unit of the automatic door.

FIG. 5 is a front view, a side view, and a top view showing an example of a conventional automatic door.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Automatic door 11 Touch button 20 Pressure-sensitive switch 21, 22 Conductive member 23 Elastic holding member 24, 25 Insulating member 27 Projection part 30 Transmitter 40 Control part

Claims (3)

[Claims] 1. An automatic door provided with a control device for automatically opening and closing the door by a moving mechanism in response to a detection signal from a proximity switch for detecting the proximity of a person passing through the door. Detecting means for detecting contact of a person passing through the door is provided on almost all of the side ends. When the detecting means detects that a passing person contacts the open side end of the door, the control device An automatic door, wherein the automatic door is configured to be opened. 2. The automatic door according to claim 1, wherein said detecting means includes a wireless transmitter, and said wireless transmitter detects a contact with an open end of said door detected by said detecting means. An automatic door, wherein the automatic transmission is transmitted to the control device by radio. 3. The automatic door according to claim 1, wherein an elastic member having a part projecting outward is attached to an open end of the door, and the detecting means is provided. The automatic door comprises a pressure-sensitive switch formed between the inside of the elastic member and the open end of the door.