JPH11200707A - Safety device of transferable door and safety and starting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate a non-contact proximity switch as a normal operating switch by disposing separately a signal receiving part and a signal transmitting part respectively on the fixing part of a transferable door, a building and the like. SOLUTION: When a preset prescribed period ends in a state where doors 4, 5 are fully open, they starts to close, a signal receiving part 32a set at the door edge is operated by the movement of the door 4, transmitting output of a signal transmitting part 30n is radiated to a safety sensing area 130n, and the reflection signal is received by the signal receiving part 32a. A control means 20 checks whether the receiving output is a prescribed level or higher, in the case where it is the prescribed level or lower, it is successively moved to the safety sensing areas 130n, 130(n-1), 130(n-2),... by the movement of the door 4. When a person/an obstruction enters the safety sensing area during closing operation of the doors 4, 5 in door moving spaces 130a-130n, the reflection signal is detected by the signal receiving part 32a or 32b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an automatic door provided at an entrance or exit of a building or the like, an opening / closing door of an elevator, or a movable door used for an automatic door of a vehicle such as a train / automobile. In this case, the safety device and the safety and activation of the movable door to control the opening and closing of this door, and to ensure the safety of persons or objects from being caught by the door from opening to closing of the door. It relates to improvement of the device.

[0002]

2. Description of the Related Art In an automatic door provided at an entrance of a building or the like as described above, a non-contact proximity switch is conventionally provided on an immovable portion side of a building above the entrance, and this proximity switch allows a person to enter the entrance. Detecting approach, opening the door,
A touch switch is provided on a part of the door in advance, and opening of the door is started when a person comes into contact with the touch switch. Further, in these start switches, a predetermined time from when the door is opened to when a person passes through the entrance is set in advance, and the door is automatically closed after the set time. To prevent the door from closing when the person stops at the door entrance or exit, the person is generally detected by the presence or absence of a person on the fixed side of the building at the entrance or exit. The auxiliary light switch is provided separately from the start switch.
For example, as shown in FIG. 1A, columns 101 and 102 as immovable portions on both sides of the entrance and exit are provided in this auxiliary light switch.
A light-emitting element 103 and a light-receiving element 104 are provided so as to face each other, and a transmitted light switch for detecting a person 105 by blocking a light path between them, or one of the two as shown in FIG. A light-emitting element 106 and a light-receiving element 107 are arranged side by side on a pillar 101, and a reflected light switch that detects a person 105 by receiving reflected light is used. Among these auxiliary light switches, the transmitted light switch has a relatively long detection distance but has a narrow detection area and tends to be spot-like. On the other hand, the reflected light switch has a problem that the detection area can be set relatively wide but the detection distance cannot be set. In addition, a safety device in which the above-mentioned transmitted light switch and reflected light switch are combined and provided on the stationary portion side of an automatic door is also proposed in Japanese Patent Application No. 4-239076 filed by the present applicant.

[0003]

However, in the above-described light beam type activation device, the space to be sensed tends to be limited due to the straightness of light, and a problem has been found that a blind spot space is easily generated. This will be described with reference to FIG.
Automatic doors 4, 5 provided at the entrance and exit as shown in FIG.
Non-contact proximity switch 11 at the center of the building and on the building side
FIG. 2 (B) shows the state of attachment, and the sensing areas 120a, 120b are not affected by the movement of the doors 4, 5.
b is set, the area 1 including the center door moving space
22a became a so-called dead zone, and no person / obstacle was detected in this area 122a. When this dead zone is viewed in a cross section in the entrance / exit direction, it becomes as shown in FIG. 2C, and the inner boundary 111 of the non-contact proximity switches 110a and 110b.
Even if a and 111b are as close to the doors 4 and 5 as possible, it is necessary to separate them from the door surface by a minimum of about 50 mm, and the width of the dead zone 122b is about 150 to 300 mm as a whole. Therefore, the above-mentioned auxiliary light switch is mounted on the immovable part side of the building so that when a child or the like stops in the dead zones 122a and 122b, the door is closed and a person is not pinched. No human could be detected in the moving space of No. 5 and No. 5. Further, in the reflection type non-contact proximity switch, when the relative distance between the proximity switch and a person / obstacle changes, the output of the sensor rapidly changes greatly. Generally, only the change in the sensor output is captured and the sensing signal is output. Although the circuit configuration for performing the moving body switch operation is easy, there is a problem that a person who is standing still in front of the sensor cannot be sensed by the moving body switch operation alone. On the other hand, if you try to perform a static switch operation that also detects a stationary person or object, the output fluctuation range of the sensor, temperature drift, sensor distance sensitivity, etc. will fluctuate greatly, and stable static switch operation will be realized very much. It was difficult. Furthermore, since the door is constantly moving due to the opening and closing operation, disconnection of the cable and the like is apt to occur, and mounting the sensor or device on the movable door side will cause troubles and troubles. When a device is installed in a building, a device that consumes as little power as possible is desired, and a method has been generally adopted in which power is also supplied from the immovable part side of the building to the movable door side in a non-contact manner. In addition, the opening / closing door of an elevator or the like has a short moving distance of the door, and it is necessary to detect a person / an obstacle in a very narrow space. / A sensor for detecting an obstacle is not practical, and a contact sensor is interlocked with a door to detect that the door has caught a person and to reverse the closing operation of the door. Furthermore, train /
At the time of automatic doors and windows for vehicles such as automobiles, the mounting space for safety sensors tends to be limited to a very narrow range. Therefore, at the present time, non-contact type safety devices for preventing pinching have not been put to practical use. Therefore, the present invention has been made under the circumstances described above, and the object of the present invention is to
A door side for moving a signal transmission unit and a signal reception unit of a transmission type and / or reflection type non-contact proximity switch such as an optical proximity switch, an ultrasonic proximity switch, an infrared proximity switch, a millimeter wave radar sensor, and a building; Separated from the stationary part side, etc., eliminates the blind spot space of the sensor and reliably detects the person who enters and exits or stands still even in the moving space of the movable door, and is movable It is an object of the present invention to provide a movable door safety device and a safety and activation device capable of constantly supplying a necessary and sufficient electric power to a device attached to a door.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a safety device for a movable door, and an object of the present invention is to detect a person / obstacle on an opening / closing door side which is a movable portion of the movable door. A signal receiving unit or a signal transmitting unit of a non-contact proximity switch for controlling opening / closing of a door / prevention of collision is provided, and a signal transmitting unit or a signal of the non-contact proximity switch is provided on an immovable portion corresponding to the movable door. This is achieved by providing a receiving unit separately and detecting a blind spot and a person / obstacle without a pinch in the moving space of the door by the non-contact proximity switch. The present invention also relates to a safety and activation device for a movable door, and the object of the present invention is to detect a person / obstacle on an opening / closing door side, which is a movable portion of the movable door, to control the opening / closing of the door. A signal receiving unit or a signal transmitting unit of a first non-contact proximity switch for preventing collision is provided, and a signal transmission corresponding to the first non-contact proximity switch is provided on an immovable portion corresponding to the movable door side. The first non-contact proximity switch performs detection of a blind spot and a person / obstacle without a pinch in the moving space of the door, and an entrance direction and / or exit of the door. By disposing second non-contact proximity switches each having a spatial directivity characteristic in each direction so that detection of approach of a person / obstacle can be performed even when the door is closed. Is also achieved.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. First, the structure of an automatic door for a building is constructed as shown in FIG. , Base) 1 with doors 4, 5 suspended via slide rollers 2, 3, respectively, and further, pulleys 6, 7 are suspended at both ends in the blind 1, and a belt 8 is stretched. The lower part of the belt 8 is engaged with, for example, the door 4 and the upper part of the belt 8 is engaged with the door 5, and the pulley 6 is driven to rotate by a motor unit 9 including a motor and a reduction mechanism. The doors 4 and 5 are opened and closed, and their control is controlled by a control means 20 provided above the door 5 in the example of FIG. The opening and closing control of the doors 4 and 5 is performed by calculating the sensor output. The arrangement of the non-contact proximity switch will be described in more detail with reference to FIGS. 3 and 4. As shown in FIG. Parts 30a, 30b,
, 30n are arranged as shown in FIG. 4 (A), and the safety sensing area of each signal transmission unit can be easily set as 130a to 130n as shown in FIGS. 4 (B) and 4 (C). is there. And the safety sensing areas 130a to 130n
Are received by the signal receiving units 32a and 32b provided above the doors 4 and 5, and the presence / absence of a person / obstacle is determined by the control unit 20.
In the example of FIG. 3, transmission type non-contact proximity switches (sensors) 24a to 24k are arranged below doors 4 and 5 on the side where the doors are aligned in order to reduce the influence of the reflected signal from the floor or the like. The outputs 24a 'to 24k' are subjected to arithmetic processing by the control means 20. Switches 24a-24
k and reflective non-contact proximity switches 30a to 30n to 3
As the sensors 2a and 32b, any sensor having a spatial directivity characteristic can be used. For example, an optical beam switch including a light emitting / receiving element, an ultrasonic proximity switch including an ultrasonic transmitting / receiving unit, and an infrared light emitting / receiving element Infrared sensing type proximity switch composed of a millimeter wave radar sensor and a millimeter wave radar transmission / reception sensor can be used. By the way, in order to supply power and transmit / receive signals to / from the doors 4 and 5 which move linearly, as shown in FIG.
12b, and a cable guide 10 for guiding and holding the power supply cables 12a and 12b by a flexible support member 10. The support member 10 is formed of an arc-shaped band member curved in the width direction. The one end of the support member 10 is fixed to the movable doors 4 and 5, and the other end is fixed to the building which is an immovable part. Electric power and power are supplied via the cable guide 10 which moves while forming a parallel portion parallel to the fixed portion and a U-turn-shaped curved portion having a substantially constant curvature in which the arc-shaped convex direction in the width direction is outside or inside. Signals are transmitted and received. That is, in the present invention, the movable electric parts (doors 4 and 5) reciprocating along the belt 8 and the supply of power and the transmission and reception of signals from the building-side immovable parts 16 to the movable electric parts 4 and 5 are performed. A power supply cable 12a, 12b is used, and a cable guide 10 for a linear moving mechanism that guides and holds the power supply cable 12a, 12b with a flexible support member 10 is used. The support member 1 is made of a belt-shaped member formed in a curved arc shape.
0 is fixed to the movable electric part 4 or 5 and the other end is fixed to the immovable part 16, so that the fixed part 17a and the immovable part 16 of the movable electric part 4 or 5 as shown in FIG.
And a U-turn curved portion B having a substantially constant curvature in which the arc-shaped convex direction in the width direction is outside or inside. Features. Furthermore, the curvature radius R1 (FIG. 5 (B)) of the arc-shaped portion in the width direction of the support member 10 is set substantially equal to the curvature radius R2 (FIG. 5 (C)) of the curved portion B of the support member 10. Features.

In such a configuration, the power supply cables 12a and 12b used in the present invention are attached to the building-side fixed portions 16 and 1 by the doors 4 and 5 reciprocating along the belt 8, respectively.
6 ′ for supplying power and transmitting and receiving signals between the doors 4, 5 and the building-side fixed parts 16, 16 ′. Is held. The support member 10 includes a ferrous metal material or whisker, a stainless steel material, an amorphous iron alloy, copper, a non-ferrous metal material or a whisker or an alloy thereof, glass-containing ceramics and / or ceramic fibers or whiskers, paper, animal / plant fibers, rubber , Synthetic rubber, synthetic resin, engineering plastic, FRP, CFR
P and / or a combination of these materials can be used. Particularly preferably, a belt-shaped steel material is used, and the cross section is formed in a curved arc shape as shown in FIG. 5 (B). ), The support member 1
0 has such a property that when it is bent in the middle of the longitudinal direction, the radius of curvature R2 of the bent portion is substantially constant.
Therefore, as shown in FIG. 4, if one end of the support member 10 is fixed to the door 4 or 5 and the other end is fixed to the building-side immovable portions 16 and 16 ′, Parallel portions A, A 'parallel to the fixed portions 17a, 16a of the fixed portions 16, 16', respectively, and a U-shaped curve having a substantially constant radius of curvature so as to connect the parallel portions A, A '. A part B is formed. Moreover, the support member 10 does not bend due to its own weight in the middle. Therefore, the power supply cables 12a, 12b
, The power supply cables 12a and 12b also reciprocate left and right along the support member 10 and are bent at a constant radius of curvature R2 even at the curved portion B, so that there is no possibility of disconnection or the like. That is, in the embodiment, the support member 10 is formed of a strip-shaped thin plate spring steel material, one end of which is fastened and fixed to the fixing base 17 of the door 4 or 5 by a screw or the like, and the other end thereof is the immovable portion 16 on the building side. It is fixed to. As shown in FIG. 5B, the cross section of the support member 10 is formed in an arc shape (radius R1) curved in the width direction or a parabolic arc shape. Since the cross section in the width direction has an arc-shaped portion, the support member 1
When 0 is curved in the middle of the longitudinal direction, the radius of curvature of the curved portion is substantially constant. FIG. 5 (A)
As shown in the figure, the support member 10 has parallel portions A and A ′ which are parallel to the fixing portion 17a of the door 4 or 5 and the fixing portion 16a of the immovable portion 16 on the building side in the attached state. A curved portion B having a semicircular shape and a substantially constant radius of curvature R2 is formed so as to connect the parallel portions A and A 'on one side. The curved portion B is formed such that the cross section thereof has an arc shape (radius R1) and its convex direction is outward or inward. Note that the rigidity of the support member 10 is preferably high enough not to reduce the driving force of the motor 9, and its width is preferably wide enough to cover the power supply cables 12a and 12b. As a result, the power supply cables 12a and 12b can be guided and held without any influence on the drive system. Moreover, the support member 1
0 indicates that the power supply cables 12a, 12b can be efficiently moved even in the case of high-speed movement without being bent by their own weight in the middle.
Can be held as a guide. Further, the curvature radius R1 of the arc-shaped portion in the width direction of the support member 10 is set substantially equal to the curvature radius R2 of the curved portion B of the support member 10. That is, the radius R1 of the circular arc section in the width direction of the support member 10 and the radius of curvature R2 of the curved portion B in the mounted state are slightly affected by factors such as the width dimension, plate thickness, and material. However, it is generally recognized that the two are almost the same. Next, FIG. 6B shows the power supply cables 12a to 12a to the support member 10 in this embodiment.
12C shows a cross section when 12c is taken along. In this embodiment, a multi-core flat cable is used as the power supply cable 12, and the power supply cable 12a and the signal transmission / reception cable 12 are used.
b, 12c, and the flat cables 12a to 12c are laminated with the support member 10, and further,
The longitudinal direction of the support members 10 is slidably bundled by a sleeve material 14 made of a net-like synthetic resin so as to surround the flat cables 12a to 12c and the support members 10. This is a flat cable 12
This is so that a to 12c can smoothly reciprocate along the support member 10 without separating from the support member 10. In this embodiment, the flat cables 12a to 12c have been described as examples, but the same applies to the case of round cables 13a to 13d. In this manner, the support member 10 is not lifted or entangled, so that the cable is functionally less damaged and the accident such as disconnection or poor contact is drastically reduced, and the support member 10 has a compact and simple structure. It can be said to be the optimal cable guide for automatic doors that require a high degree of durability and reliability due to the intense opening and closing operations. In addition, as the support member 10, for example, a band-shaped spring steel material used for a commercially available steel tape measure or the like can be diverted as it is, so that it is possible to largely reduce the cost as a whole.

In such a configuration, the operation will be described with reference to FIGS. 3 and 4. The signal transmission units 30a to 30n of the reflection type non-contact proximity switch are, for example, always turned on or lighted in a time division manner. When the doors 4 and 5 are closed, the signal transmitting units 30a to 30-3
0n is blocked, so that the signal receiving units 32a to 32
b remains off. In this state, when it is detected by a start switch (not shown) that a person approaches the doors 4 and 5, the motor unit 9 is started, and the opening operation of the doors 4 and 5 is started. Then, when a predetermined period (door opening period) that has been set in a fully opened state ends, the doors 4 and 5 start closing. Then, the movement of the door 4 activates the signal receiving unit 32a installed at the door end, and the transmission output of the signal transmission unit 30n is changed to the safety sensing area 1.
30n, the reflected signal is received by the signal receiving section 32a, and the control means 20 checks whether or not the received output is above a predetermined level. 13 safety sensing areas
0n, 130 (n-1), 130 (n-2)..., And the transmission signal is cut off or discarded by the movement of the door 4 sequentially from the signal transmission unit installed outside.
Further, the signal receiving unit 32b operates by the movement of the door 5, and the safety sensing area sequentially moves to 130a, 130b,..., And a transmission signal is sequentially generated by the movement of the door 5 from the signal transmitting unit arranged outside. Blocked or discarded.
Thus, when a person / obstacle enters the safety sensing area 130a-130n during the closing operation of the doors 4, 5 in the door moving spaces 130a-130n shown in FIG. 4, the reflected signal is detected by the signal receiving unit 32a or 32b. Then, a door opening signal is output to the motor unit 9 by the control means 20. Also, if the person / obstacle is in the safety sensing area 130
a to 130n, or the signal receivers 32a, 32a,
Since the moving object 2b moves again and detects a stationary person / obstacle, the signal receiving units 32a and 32b need only perform the above-described moving object detection switch operation, and do not need the static body switch operation. The circuit configurations of 32a and 32b can be significantly simplified. Of course, the signal receiving units 32a and 32b may be operated as a static switch.

Incidentally, the safety sensing areas 130a to 130a-1
To set 30n over a wide range, the signal transmission units 30a-30
It is conceivable to increase the signal energy of light, ultrasonic waves or the like radiated from n or to increase the signal amplification of the sensors of the signal receiving units 32a and 32b. It is desirable that the transmission signal energy and the reception signal amplification be such that the signal reception units 32a and 32b do not malfunction. For a space 150 to 500 mm from the floor, for example, as shown in FIG. The signal transmission units 24a to 24k are disposed on one of the doors or the immovable part side of the building, and the signal reception units 24a 'to 24k' are disposed on the other door or the one-sided moving door side. If the received signal of the switch is monitored by the control means 20, a malfunction based on a reflected signal from the floor can be prevented, and a more reliable safety device can be realized. Although the example of FIG. 3 shows an example in which a plurality of transmissive non-contact proximity switches are attached to the doors 4 and 5, it is obvious to those skilled in the art that one set of transmissive non-contact proximity switches can function sufficiently. It is. Since the cable guide 10 can transmit necessary and sufficient power energy to the doors 4 and 5, each non-contact proximity switch can be always operated. However, for energy saving, the distributor 22 and the control means 20 are used.
And the transmitting / emitting portion 24a of the proximity switch in sequence
It is preferable that the ON / OFF operation be performed in a time-division manner while synchronizing the reception / light reception units 24a 'to 24k' with the reception / light reception units 24a 'to 24k'. In the embodiment shown in FIG. 3, if only the switching control signal of each sensor is transmitted from the control means to the distributor 22, all of the remaining signal processing can be processed on the door 5 side, and the signal transmission unit reciprocates between the doors 4-5. Can be omitted. Furthermore, in the above description, the moving direction of the door is the left-right moving door, but the present invention can be similarly applied to a door that opens and closes in the circumferential direction. Further, it is apparent that the present invention can be applied to a case where a signal transmitting unit is provided on the moving door side and a signal receiving unit is provided on the immobile unit side.

FIG. 7 corresponding to FIG. 4 shows another embodiment of the present invention, in which the same numbered devices perform the same functions, and the transmission type proximity device of FIG. The switches are all replaced with reflection type non-contact proximity switches. The signal transmission units 30a 'to 30n' of the reflection type non-contact proximity switch are buried in the floor, and their reflection signal reception units 32c and 32d are respectively provided. Doors 4 and 5 are provided. In the safety device having such a configuration, the signal transmission units 30a to 30n and 30
0N-OFF control is performed in a time-division manner so that signal transmission periods of a ′ to 30n ′ do not overlap each other.
During the operation period of 0a to 30n, the signal receiving units 32a and 32b
Check the output to see if there are any people / obstacles,
During the operation period of the signal transmitting units 30a 'to 30n', the output of the signal receiving units 32c and 32d is checked to check for the presence of a person / obstacle. Even if time stops, people who are definitely passing
It is possible to provide a safety device for a linear movable door that is safe and secure without an obstacle being sandwiched. In addition, among the above-mentioned transmission type non-contact proximity switches, the optical proximity switch and the infrared proximity switch can be downsized, and the thickness of the door is 10 m.
m can be mounted on a very thin automatic door, and can be operated even when the door gap approaches within 2 to 3 mm. Further, the transmission type non-contact proximity switch can generally perform a detection operation until the door is completely closed. By the way, a reflection type non-contact proximity switch in which an optical or infrared type proximity switch, an ultrasonic proximity switch, a millimeter wave radar sensor, or the like using an LED, a laser light emitting element or the like is combined as a signal transmitting unit 42 and a reflected signal receiving unit 44 thereof. When a sensor (or sensor) is configured, mounted on a movable door, and operated, the following problems have conventionally occurred as shown in FIG. That is, as shown in FIG. 8 (A), the reflection type proximity switch processes a received wave that is reflected and returned from the transmission signal, and the signal level of the received wave is 1 / the level of the transmission type proximity switch. 4 to 1/10. Therefore, in order to stably detect a person / obstacle, it is desired to transmit a stronger signal from the signal transmitter 42. However, if the transmitted signal is strengthened, as shown in FIG. A reflection type non-contact proximity switch is attached to an automatic door (1-2 m / s) that moves relatively quickly, receiving a reflected wave from the side, and a sensor is activated during the movement of the door to cause a person / obstruction. There were no examples of detecting objects. Therefore, the inventor of the present application mounted a reflection type non-contact proximity switch on the mating side of the movable door, and in the case where the gap between the doors was narrow as shown in FIG. The range is a distance range to the front of the other door, and in the case of a wide door gap as shown in FIG. 8 (D), if the transmission level of the signal transmission unit 42 is increased in a range where the other door is not detected, the moving speed is increased. Although it has been disclosed in Japanese Patent Application No. 9-7539 that the reflection-type non-contact proximity switch can be used in an automatic door, the change processing of the transmission signal strength based on the door gap distance as described above is not performed in the present invention. You may or may not need to.

FIGS. 9 and 10 corresponding to FIGS. 3 and 4 show another embodiment of the present invention, in which the devices having the same reference numerals perform the same functions, respectively. The signal transmission units 30a1 to 30n1 are installed at the side of the first stationary unit, for example, slightly inclined to the entrance side of the building in FIG. 10B, and the reflected signals are transmitted to the doors 4 and 5 constituting the first proximity switch. Provided signal receiving units 32a, 32
b. Also, the reflected signals from the starting area 120i1 (i = a to n) in the entrance direction are received by the signal receiving units 34a1 to 34n1 provided in the blind 1 constituting the second proximity switch. . Furthermore, the signal transmission units 30a2 to 30n2 are installed on the side of the first immovable part with a slight inclination to the exit side of the building, for example, as shown in FIG. 10B, and the reflected signal is a door constituting the first proximity switch. Signal receiving unit 3 provided in 4, 5
2a and 32b. Also, the reflected signals from the starting area 120i2 (i = a to n) in the exit direction are received by the signal receiving units 34a2 to 34n2 provided in the first switch constituting the second proximity switch. . Also, the signal receiving units 34a1 to 34a1 to 3a3
The output of 4n1 and 34a2-34n2 is the cable 12c
Is input to the control means 20 via the.

The operation of this configuration will be described with reference to FIGS. 9 and 10. The signal transmission units 30a1 to 30n1 and 30a2 to 30n2 of the non-contact proximity switch will be described.
For example, when the doors 4 and 5 are closed, the doors 4 and 5 are turned on,
Since the input signals to the signal receiving units 32a and 32b are cut off, the signal receiving units 32a and 32b remain off. In such a state, a person puts on the doors 4 and 5, for example, FIG.
When approaching from the right direction of 0 (B), the starting area 12
When a person enters 0i1, the output of the signal receiving unit 34i1 of the second non-contact proximity switch is activated, the control unit 20 activates the motor unit 9, and the opening operation of the doors 4, 5 is started. Thereafter, when a predetermined period (door opening period) preset in a state where the doors are fully opened ends, the doors 4 and 5 start closing. Then, the movement of the door 4 causes the signal receiving unit 32a installed at the door tip to operate in the same manner as described above, and the transmission outputs of the signal transmission units 30aj to 30nj (j = 1, 2) to the safety sensing areas 130i1 and 130i2. The signal is radiated and the reflected signal is received by the signal receiving section 32a, and the control means 20 checks whether or not the received output is at or above a predetermined level. The sensing area is 130nj, 130
(N-1) j, 130 (n-2) j ... (j = 1, 2), and the reflected signals from the signal transmission unit installed outside are sequentially discarded by the movement of the door 4. To go.
Also, the movement of the door 5 activates the signal receiving unit 32b, and the safety sensing areas are sequentially set to 130aj, 130bj,.
= 1, 2), and the reflected signals from the signal transmission unit arranged outside are sequentially discarded by the movement of the door 5. Thus, the door moving space 130 shown in FIG.
During the closing operation of the doors 4 and 5 at aj to 130nj (j = 1, 2), a person / obstacle is detected by the safety sensing area 130a.
When the signal enters from j to 130nj (j = 1, 2), the reflected signal is detected by the signal receiving unit 32a or 32b, and the door opening signal is output to the motor unit 9 by the control unit 20. Also, if the person / obstacle is in the safety sensing area 130
aj to 130nj (j = 1, 2), or even when the signal receivers 32a and 32b installed on the doors 4 and 5 move again, even when they are still, Since an obstacle is detected, the signal receiving units 32a, 32
In the signal receiving unit 32b, it is sufficient that only the above-described motion detection switch operation can be performed, and no static body switch operation is required.
The circuit configurations of a and 32b can be significantly simplified. Of course, the signal receiving units 32a and 32b may be operated as a static switch.

By the way, the safety sensing area 130aj ~
To set 130nj (j = 1, 2) in a wide range, signal energies such as light and ultrasonic waves radiated from the signal transmitting units 30aj to 30nj (j = 1, 2) are increased, or the signal receiving unit 32a is set. , 32b, it is conceivable to set the signal amplification degree of the sensor large, but it is desirable that the transmission signal energy and the reception signal amplification degree are such that the signal receiving units 32a and 32b do not malfunction due to sensing a reflected signal from the floor or the like. For a space 150 to 500 mm from the floor, for example, as shown in FIG. 9, the signal transmission units 24a to 24k of the transmission type non-contact proximity switch 24 are disposed on one door or the building immovable unit side to receive a signal. If the units 24a 'to 24k' are arranged on the other party door or the one-sided moving door side and the reception signal of each transmissive non-contact proximity switch is monitored by the control means 20, a malfunction based on the reflection signal from the floor is obtained. Can be prevented, and a more reliable safety device can be realized. Although the example of FIG. 9 shows an example in which a plurality of transmissive non-contact proximity switches are attached to the doors 4 and 5, it is obvious to those skilled in the art that one set of transmissive non-contact proximity switches can function sufficiently. It is. Further, since necessary and sufficient power energy can be transmitted to the doors 4 and 5 by the cable guide 10, each non-contact proximity switch can be always operated. However, for energy saving, the distributor 22 and the control means 20 are connected to each other. In synchronization with the transmitting / emitting units 24a to 24k of the proximity switch and the receiving /
It is preferable to perform the ON-OFF operation in a time sharing manner while synchronizing the light receiving units 24a 'to 24k'. Further, in the embodiment of FIG. 9, if only the switching control signal of each sensor is transmitted from the control means to the distributor 22, all the remaining signal processing can be processed on the door 5 side, and the signal transmission unit reciprocates between the doors 4-5. Can be omitted. Furthermore, in the above description, the moving direction of the door is the left-right moving door, but the present invention can be similarly applied to a door that opens and closes in the circumferential direction. Further, in the arrangement structure of the signal transmission units and the signal reception units as shown in FIG. 10, the radiation signals of the signal transmission units 30i1 and 30i2 (i = a to n) are transmitted by the signal reception units 34i1 and 34i2 (i = a to n). Since the signal is received and also received by the signal receiving units 32a and 32b, there is no need to provide a signal transmitting unit dedicated to the signal receiving units 32a and 32b. In addition, since the signal receiving units 32a and 32b check the safety area 131i (i = a to n) in the space near the moving doors 4 and 5, the signal receiving units 34i1 and 34i2 (i = a) for the start switch. The angle adjustments of (a) to (n) become very simple, and the signal receiving units 32a, 32 can be used for a person who is standing still at the entrance and exit of the automatic door.
It is possible to simply and reliably detect a person / obstacle simply by operating the moving body switch b.

FIGS. 11 to 13 show an application of the safety device of the present invention to a moving door of an elevator. An elevator car 200 is provided with inner doors 204 and 205, and a building 202 side is provided with outer doors 206 and 207. Is provided.
A more detailed structure is, for example, as shown in FIG.
The car 20 on the immovable part side with respect to the inner doors 204 and 205
The pulleys 6 and 7 are mounted on the upper part of the belt 0 and the lower part of the belt 8 is engaged with the door 204 via the roller 2 and the upper part is engaged with the door 205 via the roller 3. At the same time, the doors 204 and 205 are opened and closed by rotating and driving the pulley 6 by a motor unit 9 including a motor and a speed reduction mechanism. In the example of FIG. The operation command and the sensor output are arithmetically processed by the control means 20 provided in the CPU. FIG. 12 (A), (B)
The state of arrangement of the non-contact proximity switch will be described in more detail. The signal transmission unit of a reflection type non-contact proximity switch (sensor) as a first proximity switch is provided above the entrance of the car 200 corresponding to the immovable part side with respect to the door. 30a, 30b,
, 30n are disposed slightly inclined toward the outer doors 206, 207, and the safety sensing areas 130i (i =
a to n) are set as shown in FIG. The reflected signal from the safety sensing area 130i is
4 and 205, signal receiving units 32a and 32 provided above
b, the output of which is received by the cable guides 10, 1
The information is input to the control means 20 via 0 ', and the presence / absence of a person / obstacle is determined. In the example of FIG. 12, the door 204 is used to reduce the influence of a reflected signal from the floor or the like.
The signal transmission units 24a to 24k of the transmission type non-contact proximity switch (sensor) are disposed on the side of the lower door 205 where the door is aligned.
The reception outputs 24 a ′ to 24 k ′ are transmitted to the cable guide 10.
'To the control means 20 to determine the presence / absence of a person / obstacle. Transmission type non-contact proximity switch 2
4a to 24k and reflection type non-contact proximity switch 30a to 3
As 0n to 32a and 32b, all sensors / switches having spatial directivity can be used as described above, but when embedded and used in a movable door, mounting is possible even if the storage space is relatively small. An easy infrared sensing proximity switch or the like is preferred.

FIG. 13 is an electrical block diagram in the case where the control means 20 is constituted by a microcomputer or the like.
A rotary encoder, a linear encoder, and the like are connected to the motor unit 9 to form a door gap measuring unit 11 for measuring a door gap distance between the doors 204 and 205, and an output thereof is input to the control unit 20 to output the current position of the door. Is calculated, and the switch means SW1 is controlled via a control signal GSW1 to control the signal transmission operation of the first proximity switch.
Are turned on and off, and the on / off of the power supply to the signal transmission units 30a to 30n is controlled. or,
The reflected signal is received by the signal receiving unit 32a or 32b, and is input to the control unit 20 via the multiplexer SW2 and the AD conversion unit. Further, in order to control the signal transmission operation of the second proximity switch, the switch means SW3 is controlled to be turned on / off via a control signal GSW3, so that the power supply to the signal transmission units 24a to 24k is controlled to be turned on and off, and the transmission thereof is controlled. The signal is received by the signal receiving unit 24a.
'To 24k' and received by multiplexers SW4 and A
The data is input to the control means 20 via the D conversion means. In such a configuration, the operation will be described with reference to FIGS. 14 and 15. First, when the elevator is called to a predetermined floor by an elevator call switch (not shown) or the like, the control unit 20 closes the doors 204 and 205. The car 200 is moved to the calling floor (step S2). Then, when the car approaches the calling floor, it waits until the car stops completely (step S4). Next, when the complete stop of the car 200 is confirmed, the opening operation of the doors 204 and 205 is started (step S6). And door 2
When the doors 04 and 205 are fully opened (step S8), the doors are kept fully open for a predetermined time (for example, one minute) (step S10), and then the door closing operation is started (step S12) and the door safety check is also started. (Step S14). In this door safety check operation, first, the distance between the doors 204 and 205 is measured by the door gap measuring means 11, and the signal transmission unit 30 responds to the sequentially changing distance between the doors.
The transmission on / off operations of a to 30n are controlled.
More specifically, an experiment was conducted so that a reflected signal from a moving door was not erroneously received by a person at a passage position of an inner door or an outer door in advance based on an installation position of each signal transmission unit and an attachment angle of the signal reception units 32a and 32b. Thus, a power supply on / off pattern of the signal transmission unit corresponding to the door gap as shown in FIG. 14 is created. When the inter-door distance information is input from the measuring means 11, the power on / off pattern corresponding to the current inter-door distance is immediately read from the table of FIG.
Set to. Subsequently, the output of the signal receiving unit 32a attached to the door 204 is input to the control unit 20 by switching the multiplexer SW2, and the output of the signal receiving unit 32b attached to the door 205 is also input. Then, the control means 2
If it is 0, it is determined whether or not the output of the signal receiving unit 32a or 32b is equal to or higher than a predetermined level, and it is determined whether there is a person / an obstacle. Since the signal receiving units 32a and 32b receive the reflected signals, it is usually determined that a person / obstacle exists when a reflected signal of a predetermined level or more is received. In this case, (step S16) The door safety check is turned off (step S18), and the process returns to step S6. When the above-mentioned check of the reflection type non-contact proximity switch is completed,
The switch means SW1 are all reset to the off state, and the switch means SW3 are all set to the on state, so that the signal receiving units 24a 'to 24k' of the transmissive non-contact proximity switch
Is output to the control means 20 by sequentially switching the multiplexer SW4, and it is determined in the same manner as described above whether or not there is a person / obstruction that interrupts these transmissive non-contact proximity switches.
In the case where the transmission signal is used, when the normal reception transmission signal falls below a predetermined level, it is determined that a person / obstacle exists.
Jump to routine 6. Next, when the above-mentioned check of the transmission type non-contact proximity switch is completed, all the switch means SW3 are reset to an off state, the distance between doors is input from the door gap measurement means, and the above-mentioned reflection type non-contact proximity switch is again input. Is repeated until the door is fully closed (step S20). When the door is fully closed, the door safety check ends (step S22). In other words, there is no problem if the safety and activation device is always operated in automatic doors of buildings or the like, but in vehicles such as elevators, automobiles, trains, etc. Since it is very dangerous to control the opening and closing of the car, it is necessary to confirm that the car and the vehicle are stopped and to operate a safety device for preventing the pinching. Thus, by turning on only the signal transmitting unit inside the moving door according to the moving distance, the signal receiving units 32a and 32b reliably detect a person / obstacle without generating a reflected signal from the moving door. be able to. In the transmission type non-contact proximity switch, the pinch prevention check can be performed only on the mounted door (in FIG. 12A, only the inner door). However, in the present invention, both the inner door and the outer door are prevented from being pinched. Can be checked. Also, if the transmission frequency and wavelength of the signal transmission unit are changed between the transmission type non-contact proximity switch and the reflection type non-contact proximity switch to select a wavelength or frequency that does not interfere with each other, the transmission type non-contact proximity switch is set during the door closing operation. The contact proximity switch can always be operated, and the method of controlling the on / off operation of the signal transmission unit according to the moving distance of the moving door can be similarly applied to an automatic door for a building. Further, as described above, in the apparatus for controlling the operation / pause state of the signal transmitting unit or the signal receiving unit by inputting the distance information to the other door or the immovable unit side by the door gap measuring unit, the non-contact proximity switch is configured. A control pattern as shown in FIG. 14 is prepared only for a signal transmitting unit corresponding to a space without a door (safety sensing area) even if both the signal transmitting unit and the signal receiving unit are arranged on the immobile unit side. , It is easy to distinguish and detect moving doors or doors and people / obstacles without completely confusing them. Further, as the above-mentioned door gap measuring means, the output level of the transmitting section of the transmission type non-contact proximity switch is fixed in advance, the reception level is measured and stored for each predetermined distance, and then the transmission type non-contact proximity switch is measured. A door gap measuring means based on the reception level of a non-contact proximity switch of an optical type, an ultrasonic type, an infrared type, a millimeter wave type, or the like, in which distance information is calculated indirectly from the reception level of the switch can also be used. .

FIG. 16 shows the safety device of the present invention applied to a movable door of a vehicle.
The window glass 310 can be moved up and down in the moving space 304 by an electric motor (not shown) or the like, and a groove is formed at the upper end of the window glass 310 so that a small signal transmitting unit 312i (i = a to m) is formed. ) Are embedded, and signal receiving units 320i (i = am) are disposed at opposing positions in the glass storage unit above the door 302. The control unit 20 and the signal transmitting unit 312i are connected to the cable guide 10 , And the output of each signal receiving unit 320i is input to the control unit 20 via a multiplexer or the like. The operation will be described in such a configuration. In the case of a window glass of a vehicle, the control unit 20 is stopped when the window glass is stopped or when the window glass is opened.
Is dormant. Then, when a window glass closing switch (not shown) in the vehicle is pressed or a closing command is output, the control means 20 starts a safety check, and at a predetermined interval (for example, every one second), the signal transmission unit 312i ( i = a ~
m) and supplies the transmitted signal to the signal receiving unit 320.
i (i = am) to check whether each received signal is blocked by a person / obstacle. Then, when an abnormality is detected in the transmission reception signal, an inversion command (window glass opening command) is output to the electric motor or the like. If no abnormality is detected in the transmission reception signal, the above operation is repeated until the window glass is completely closed. Thus, it is possible to provide a safe vehicular door that is not pinched even when an infant or the like accidentally operates the window glass closing switch.

[0016]

As described above, according to the movable door safety device and the safety and activation device of the present invention, a signal receiving unit and a signal transmitting unit are provided for a moving door and a fixed portion such as a building or a mounting frame, respectively. The non-contact proximity switch can always be operated as a moving body switch, and the angle adjustment and threshold adjustment of the device can be easily performed. Cost can be reduced. In the case of an elevator door, two types of doors, an inner door and an outer door, are simultaneously opened and closed. However, according to the safety device of the present invention, a safety device is installed only on the immovable part side of the vertically moving car and the inner door. Only by doing so, it is possible to realize prevention of pinching and collision of the inner door and the outer door. Further, when the present invention is applied to a movable window glass of a vehicle or the like, a pinching phenomenon of an infant due to an erroneous operation of a switch or the like, which was impossible in the past, can be easily prevented, which is very effective. Furthermore, power energy and sensor signals can be supplied / transmitted to a door which reciprocates linearly or a door or window glass which reciprocates in a circumferential direction by a cable guide having excellent durability. Switching processing and measurement processing of a plurality of non-contact proximity switches can be executed in a short time, and stable detection processing of a person / obstacle can be realized even for a door moving at high speed.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a conventional safety device.

FIG. 2 is a diagram illustrating the operation principle (generation of a dead zone).

FIG. 3 is a diagram showing a configuration example of a safety device of the present invention.

FIG. 4 is a diagram illustrating the reason why a dead zone does not occur in the present invention.

FIG. 5 is a diagram illustrating the operation principle of the cable guide used in the present invention.

FIG. 6 is a view showing a moving state and a cross section of the cable guide of FIG. 5;

FIG. 7 is a diagram showing another embodiment of the present invention.

FIG. 8 is a diagram illustrating a problem of the reflection type non-contact proximity switch.

FIG. 9 is a diagram showing a configuration example of a safety and activation device according to the present invention.

FIG. 10 is a diagram illustrating a sensing area of the device of FIG. 9;

FIG. 11 is a diagram showing an example in which the present invention is applied to an elevator door.

FIG. 12 is a diagram illustrating a sensor arrangement position and a sensing area.

FIG. 13 is a block diagram showing an electrical configuration of the elevator safety device.

FIG. 14 is an example of a control pattern for turning a sensor on and off according to a distance between doors.

FIG. 15 is an example of a flowchart of operation control of the elevator.

FIG. 16 is a diagram showing an example in which the present invention is applied to a vehicle window glass.

[Explanation of symbols]

4, 5, 204, 205 Movable door (door) 10, 10 'Cable guide 12a, 12b, 12c Cable 20 Control means 30a to 30n, 312a to 312m Signal transmission unit 32a, 32b, 320a to 320m Signal reception unit 24a- 24a ', 24k-24k' Transmission proximity switch (sensor) 34a to 34n Signal receiving unit 200 Elevator 206, 207 Outer door 300 Vehicle 310 Window glass

[Procedure amendment]

[Submission date] March 29, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

SUMMARY OF THE INVENTION The present invention relates to a safety device for a movable door, and the object of the present invention is to provide a safety device for a movable door.
Detects a person / obstacle on the movable door side,
Non-contact proximity switch for opening / closing control / collision prevention
Switch signal receivers or signal transmitters 32a, 32b.
In front of the fixed part of the building corresponding to the movable door.
Signal transmission unit or signal reception of reflective non-contact proximity switch
Sections 30a to 30n are separately provided, and each of the signal transmission sections or
Is the moving space on the mating side of the doors of the signal receiving units 30a to 30n.
The safety sensing areas 130a to 130n correspond to the movable doors.
This is achieved by making the robot move sequentially by motion and detecting a person / obstacle without blind spots and pinching. The present invention also relates to a safety and activation device for a movable door, and an object of the present invention is to detect a person / obstacle on a movable door side, which is a movable portion of the movable door, and control the opening and closing of the door. / Signal receiving unit or signal transmitting unit 32a, 32b corresponding to first reflection type non-contact proximity switch for preventing collision
It was placed, and the building immovable portion corresponding to the movable door side, provided separately the first reflective signal transmitting section or signal reception unit 30a~30n contactless proximity switch, each
Alignment of doors of signal transmission unit or signal reception unit 30a-30n
In front of the safety sensing areas 130a to 130n in the side moving space
The movable door is sequentially moved by moving the movable door to perform safety detection of persons / obstacles without blind spots and pinching, and has a spatial directivity characteristic with respect to an entrance direction and / or an exit direction of the door. This can also be achieved by providing two reflective non-contact proximity switches 34a to 34n so that a start detection by approaching a person / obstacle to the door can be performed.

Claims (29)

[Claims] 1. An opening / closing door side, which is a movable portion of a movable door,
A signal receiving unit or a signal transmitting unit of a non-contact proximity switch for detecting a person / obstacle and controlling opening / closing of the door / prevention of collision is provided. A signal transmission unit or a signal reception unit of the proximity switch is provided separately, and the non-contact proximity switch is used to detect a blind spot and a person / obstacle without pinch in the moving space of the door. Door safety device. 2. The movable door according to claim 1, wherein the non-contact proximity switch is a transmission type non-contact proximity switch having a directivity in a predetermined spatial direction and / or a reflection type non-contact proximity switch having a spatial directivity. Safety equipment. 3. The safety device for a movable door according to claim 1, wherein a plurality of signal transmission units or signal reception units of the non-contact proximity switch are provided on the stationary unit side. 4. The movable door side is provided with a single or a plurality of common signal receiving units or signal transmitting units responding to the signal transmitting units or the signal receiving units of the plurality of non-contact proximity switches on the stationary unit side. The safety device for a movable door according to any one of claims 1 to 3, wherein: 5. The signal transmission unit or the signal reception unit of the transmission type or reflection type non-contact proximity switch can also operate as the signal transmission unit or the signal reception unit of the reflection type or transmission type non-contact proximity switch. 5. The safety device for a movable door according to claim 4. 6. A door gap measuring means for measuring distance information between an opening / closing door which is the movable part and a counterpart door or an immovable part side, and the non-contact proximity based on the distance information outputted from the door gap measuring means. 2. A control means for controlling an operation / inactive state of a signal transmission unit or a signal reception unit of the switch.
The safety device for a movable door according to any one of claims 1 to 5. 7. The movable door safety device according to claim 6, wherein the door gap distance information is measured by an output of a transmission type non-contact proximity switch. 8. A power supply cable for supplying power and / or transmitting / receiving a signal to and from the door, and a cable guide for guiding and holding the power supply cable by a flexible support member, are arranged side by side. The support member is formed of an arc-shaped band member curved in the width direction, and one end of the support member is fixed to the opening / closing door that is the movable portion, and the other end portion is fixed to the immovable portion side. A cable guide that moves while forming a parallel portion parallel to the fixed portion on the immovable portion side and a U-turn curved portion having an arc-shaped convex direction in the width direction outside or inside, and having a substantially constant curvature. The safety device for a movable door according to any one of claims 1 to 7, wherein power and / or signals are transmitted and received via the device. 9. The safety device for a movable door according to claim 8, wherein a radius of curvature of the arc-shaped portion in the width direction of the support member is set substantially equal to a radius of curvature of the U-turn-shaped curved portion of the support member. 10. The non-contact proximity switch according to claim 1, wherein the non-contact proximity switch is an optical proximity switch and / or an ultrasonic proximity switch and / or an infrared proximity switch and / or a millimeter wave radar sensor. Mobile door safety device. 11. The automatic door according to claim 1, wherein the movable door is an automatic door provided at an entrance / exit of a building or the like, an opening / closing door of an elevator, or an automatic door of a vehicle such as a train / automobile. Mobile door safety device. 12. The safety device for a movable door according to claim 11, wherein the non-contact proximity switch is operated in response to an operation state of the stationary part side in the opening / closing door of the elevator. 13. The movable door safety device according to claim 1, wherein the moving direction of the door is a linear moving type or a circumferential moving type. 14. A signal receiving unit corresponding to a first non-contact proximity switch for detecting a person / obstacle and controlling opening / closing of the door / collision prevention on an opening / closing door side which is a movable portion of the movable door. Or, a signal transmitting unit is provided, and a signal transmitting unit or a signal receiving unit of the first non-contact proximity switch is separately provided on an immovable portion side corresponding to the movable door side, and the first non-contact proximity switch is provided in the moving space of the door. The first non-contact proximity switch detects a blind spot and a person / obstacle without pinching, and a second non-contact proximity switch having spatial directivity in the entrance direction and / or the exit direction of the door is arranged. A movable door safety and activation device, wherein detection of approach of a person / obstacle can be performed even when the door is closed. 15. The non-contact proximity switch according to claim 14, wherein the first non-contact proximity switch is a transmissive non-contact proximity switch having directivity in a predetermined spatial direction and / or a reflective non-contact proximity switch having spatial directivity. Mobile door safety and activation device. 16. The movable door safety according to claim 14, wherein a plurality of signal transmission units or signal reception units of the first non-contact proximity switch are provided on the stationary unit side. A starting device. 17. The movable door is provided with a single or a plurality of common signal receiving units or signal transmitting units responding to the signal transmitting units or the signal receiving units of the plurality of non-contact proximity switches on the stationary unit side. 17. Any one of claims 14 to 16, wherein
A safety and activation device for a movable door according to the item. 18. The signal transmission unit or the signal reception unit of the first transmission type or reflection type non-contact proximity switch can be operated as the signal transmission unit or the signal reception unit of the reflection type or transmission type non-contact proximity switch. Item 18. The safety and activation device for a movable door according to any one of Items 15 to 17. 19. A door gap measuring means for measuring distance information between an opening / closing door as the movable part and a counterpart door or an immovable part side, and the non-contact proximity based on the distance information output from the door gap measuring means. 19. The safety and activation device for a movable door according to claim 14, further comprising control means for controlling an operation / inactive state of a signal transmission unit or a signal reception unit of the switch. 20. The door gap distance information is measured by an output of a transmission type non-contact proximity switch.
A safety and activation device for a movable door according to claim 1. 21. A power supply cable for supplying power and / or transmitting / receiving a signal to / from the door, and a cable guide for guiding and holding the power supply cable with a flexible support member, are arranged side by side. The support member is formed of an arc-shaped band member curved in the width direction, and one end of the support member is fixed to the opening / closing door that is the movable portion, and the other end portion is fixed to the immovable portion side. A cable guide that moves while forming a parallel portion parallel to the fixed portion on the immovable portion side and a U-turn curved portion having an arc-shaped convex direction in the width direction outside or inside, and having a substantially constant curvature. 21. The safety and activation device for a movable door according to any one of claims 14 to 20, wherein power and / or signals are transmitted and received via the device. 22. The movable door according to claim 21, wherein the radius of curvature of the arc-shaped portion in the width direction of the support member is set to be substantially equal to the radius of curvature of the U-shaped curved portion of the support member. apparatus. 23. The method according to claim 14, wherein the non-contact proximity switch is an optical proximity switch and / or an ultrasonic proximity switch and / or an infrared proximity switch and / or a millimeter wave radar sensor. Mobile door safety and activation device. 24. The automatic door according to claim 14, wherein the movable door is an automatic door provided at an entrance of a building or the like, an opening / closing door of an elevator, or an automatic door of a vehicle such as a train / automobile. Mobile door safety and activation device. 25. The safety and activation device for a movable door according to claim 24, wherein the non-contact proximity switch is operated in response to an operation state of the stationary part side in the elevator door. 26. The second non-contact proximity switch is disposed on a door side and / or a non-moving part side that is a movable part.
26. The safety and activation device for a movable door according to any one of claims 25 to 25. 27. The movable door safety device and the safety and track device according to any one of claims 14 to 26, wherein the moving direction of the door is a linear movement type or a circumferential movement type. 28. A signal of a non-contact proximity switch for detecting a person / obstacle and controlling opening / closing of the door / prevention of collision on an immovable portion corresponding to the opening / closing door which is a movable portion of the movable door. A door gap measuring means for measuring distance information between the opening / closing door, which is the movable part, and the other door or the immovable part side, based on the distance information output from the door gap measuring means. And control means for controlling an operation / pause state of a signal transmitting unit or a signal receiving unit of the non-contact proximity switch, wherein the non-contact proximity switch is used to detect a person / obstacle without blind spots or pinching in the moving space of the door. A safety device for a movable door, wherein detection is performed. 29. A first non-contact proximity switch for detecting a person / obstacle and controlling the opening / closing of the door / preventing a collision on an immovable portion corresponding to the movable door of the movable door. A door gap measuring means for providing a signal receiving section and a signal transmitting section corresponding to the distance, measuring distance information between the opening / closing door as the movable section and the counterpart door or immovable section side, and a distance outputted from the door gap measuring section. Control means for controlling an operation / pause state of a signal transmission unit or a signal reception unit of the first non-contact proximity switch based on the information, wherein the first non-contact proximity switch controls the door in a moving space of the door. A second non-contact proximity switch having a spatial directional characteristic in each of an entrance direction and / or an exit direction of the door is provided while detecting a person / obstacle without blind spots and pinching, and the door is closed. Even if it is A safety and activation device for a movable door, wherein detection of approach of a person / obstacle can be performed.