JPH0449635B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic door device used at the entrances and exits of various vehicles and buildings, and particularly to a switch mechanism for automatically opening the door.

(Prior art and its problems) In conventional automatic door devices, a mat switch or an infrared sensor provided on the fixed side detects when a person approaches the door, and the opening/closing driving means is activated in conjunction with this detection operation. The door was activated. With such conventional devices, the door will open when a person enters the detection area of the matsuto switch or infrared sensor, regardless of whether or not the person has the intention to open the door. In situations where the area around the door is crowded with people, inconveniences occur such as the door opening and closing frequently even though no one is passing by. Therefore, it has been difficult to use it, for example, as an automatic door system for a passageway for commuting vehicles or an automatic door system for a store with a checkout counter right next to the entrance.

In order to eliminate this inconvenience, an opening switch that can be operated directly or indirectly by a person is provided on the door side, such as a touch switch or a switch that is linked to the handle. Automatic door devices that operate the door opening operation have also been put into practical use, but in this type of automatic door device, the switch on the door side that moves to open and close and the control circuit on the stationary side that has the opening and closing drive means are electrically connected. In order to make the connection, an electrical path must be provided between the door side and the fixed side using a curled cord or the like that does not interfere with the opening and closing movement of the door, and an electrical circuit is also required inside the door, which increases costs. Not only that, but it also becomes difficult to maintain and inspect the electric circuit system. Furthermore, the presence of electrical paths that are constantly in motion as the door opens and closes is likely to cause failures and shorten the useful life of the device.

(Means and effects for solving the problems) The present invention proposes an automatic door device that can solve the conventional problems as described above. On the door body,
Manual operating tools such as handles, light reflecting surfaces detected by a retroreflective photoelectric switch installed on the fixed side,
and in conjunction with the operation of the manual operating tool, the photoelectric switch is turned on by blocking the light incoming and reflecting path of the light reflecting surface or by moving the light reflecting surface itself.
A detection state switching means for changing the OFF state is provided, and the opening/closing drive means is configured to operate the door opening due to a change in the ON/OFF state of the retroreflective photoelectric switch when the manual operating tool is operated. It is in.

In such a device of the present invention, the detection state switching means is activated by operating the manual operation tool on the door body side, and the light input/reflection path to the light reflection surface is blocked or the light reflection surface itself is changed. The photoelectric switch on the stationary side is turned on and off by wireless remote control. As the photoelectric switch changes between ON and OFF states, the opening/closing drive means operates to open the door, and the door body automatically opens.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIG. 1, reference numeral 1 denotes a sliding door type door body for opening and closing an entrance/exit 2, and is suspended from an upper guide rail 3 via wheels 4 so as to be capable of horizontal opening/closing movement. Reference numeral 5 denotes an opening/closing drive means for driving the door body 1 to open and close, and various types are known, such as a fluid pressure operated type and an electric type.
Reference numeral 6 denotes a close door limit switch that detects that the door body 1 is in a position where the doorway 2 is completely closed, and 7 is an open door limit switch that detects that the door body 1 is in a position where the doorway 2 is completely opened. 8 is a movable handle provided on the door body 1; 9 is a retroreflective photoelectric switch disposed inside the door stop 10; and 11 is a light reflecting surface disposed inside the door body 1.

As shown in FIGS. 2 and 3, the handle 8 is
One end is rotatably pivotally attached to a support shaft 12, and is interlocked and connected to a vertically swinging arm 13 disposed inside the door body 1 via the support shaft 12. Reference numeral 14 denotes an elevating rod provided inside the door body 1, which is supported by an elevating guide 15 so that it can only be raised and lowered;
The lower part of the upper head 14a fits into the bifurcated distal end portion 13a of the vertically swinging arm 13, and a light shielding plate 16 is attached to the lower end. 17 is door body 1
It is a fixed plate fixed to the inside of the light beam shielding plate, one end 17a of which serves as a receiving seat for a compression coil spring 18 that is loosely fitted to the lifting rod 14 above the light shielding plate 16, and the other end 17b extends vertically downward and serves as a pasting portion for a light reflecting sheet or the like forming the light reflecting surface 11. 19 is door body 1
The cushion material 19, the sash material 20 that supports the cushion material 19, and the front end frame material 21 of the door body 1 have a cushion material attached to the front edge of the cushion material 19, and a cushion material 20 that supports the cushion material 19, and a front end frame material 21 of the door body 1. Through holes 19a, 20a, and 21a are provided concentrically. The light beam blocking plate 16 includes a vertical light blocking portion 16a that enters between the light reflecting surface 11 and the through hole 21a immediately in front of it when raised. The light beam blocking portion 16a has a non-reflective surface on the side facing the through hole 21a, or a side facing the through hole 21a.
The slanted surface is used so that the light rays entering the light reflecting surface 11 from the side are not reflected toward the through hole 21a side, but are reflected in a different direction.

The retroreflective photoelectric switch 9 disposed inside the doorstop 10 emits light from the doorstop 10.
0 passes through the through holes 19a, 20a, 21a on the door body 1 side and reaches the light reflecting surface 11, and the light reflected by the light reflecting surface 11 returns along the incident path. It is positioned so that it enters the light receiving section of the photoelectric switch 9.
The optical path between the photoelectric switch 9 and the light reflecting surface 11 is configured to have a height that crosses the pedestrian path at the entrance/exit 2 (for example, about 60 cm above the floor).

The handle 8 receives a spring 18 and a biasing force through the lifting rod 14 and the vertically swinging arm 13, so that the handle 8 is maintained in an initial state in which it is upright as shown by the solid line in FIG. And in this state,
The light blocking portion 16a of the light blocking plate 16 is located at a position lowered from between the light reflecting surface 11 and the through hole 21a immediately before it, and therefore the retroreflective photoelectric switch 9
The light rays from the through hole 10a on the door stop 10 side pass through the through holes 19a, 20a, 21 on the door body 1 side.
The light beam passes through the interior of the photoelectric switch 9 and reaches the light reflecting surface 11, and the light beam reflected by the light reflecting surface 11 returns along the light incident path and enters the light receiving section of the photoelectric switch 9, and the photoelectric switch 9 is turned on. There is.

The closing door limit switch 6, the opening door limit switch 7, the retroreflective photoelectric switch 9, etc. are used as a control signal source for the control means for sequence control or program control of the opening/closing drive means 5, and are described in the flowchart of FIG. Door opening control and door closing control are performed as shown.

That is, as described above, when the handle 8 is in the initial state of being upright, the photoelectric switch 9 is in the ON state. When a person who intends to open the door rotates the handle 8 against the biasing force of the spring 18 as shown by the imaginary line in FIG. so that
The light beam blocking portion 16a is connected to the light reflecting surface 11 and the through hole 21.
a, and switch the photoelectric switch 9 to the OFF state. The switching of the photoelectric switch 9 to the OFF state serves as a door opening command signal, and the opening/closing driving means 5 operates to open the door, thereby opening the door body 1.
As is natural for this type of control, once the photoelectric switch 9 is turned off and the opening/closing drive means 5 operates to open the door, the handle 8 is returned to its initial state and the photoelectric switch 9 is turned on. A holding function is provided to hold the door-opening command signal so that the door-opening operation is not interrupted even if the condition is restored.

When the opening door body 1 reaches the opening limit position and the opening limit switch 7 is turned on, the door opening operation of the opening/closing drive means 5 is stopped. The door body 1 continues to be stopped at the opening limit position until a certain period of time (about several seconds) set on the timer has elapsed. A person who operates the handle 8 can pass through the doorway 2 which is opened during this time.

Since the handle 8 has already returned to its original initial state and the light shielding plate 16 has descended together with the lifting rod 14,
When there is no one on the opening/closing path of the door body 1 to interrupt the optical path between the photoelectric switch 9 and the light reflecting surface 11, the photoelectric switch 9 returns to the ON state. Therefore, when the set time has elapsed after the door body 1 stopped at the door opening limit position, the opening/closing driving means 5 is operated to close the door, provided that the photoelectric switch 9 is in the ON state. The timing operation for the set time is updated every time the photoelectric switch 9 is switched to the OFF state by someone passing through the doorway 2 and interrupting the optical path of the photoelectric switch 9. Therefore, doorway 2
The door will not close while someone is passing through.
Of course, even if the door body 1 starts to close, the photoelectric switch 9 will be activated as described above due to someone passing through the doorway 2, etc.
When the switch is switched to the OFF state, the opening/closing driving means 5 is switched from the door closing operating state to the door opening operating state, and the door body 1 immediately opens.

When the door body 1 reaches the closing limit position with the photoelectric switch 9 remaining in the ON state and the closing limit switch 6 is turned ON, the door closing operation of the opening/closing drive means 5 is stopped and a series of automatic door opening/closing operations is completed.

Note that a locking mechanism that automatically locks the door body 1 in the closed door position may also be used. This locking mechanism can be automatically unlocked prior to the door opening operation by the opening/closing drive means 5. However, when the movable handle 8 is used as in the above embodiment, the locking mechanism can be automatically unlocked. It is also possible to release the lock by rotating the device.

Although the movable handle 8 is used as a manual operation tool, the present invention is not limited to this. For example, it is also possible to use a manual operating tool in the form of a large push button that moves inward to the door body when pressed with the finger. Furthermore, when using a handle, any handle such as a lever type or a knob type can be used. Furthermore, when a handle is used that has a movable part that can be operated with fingers in a part of the handle, the movable part can be used as a manual operating tool.

In the above embodiment, a detection state switching means using the light beam blocking plate 16 that blocks the light beam entering and reflecting path to the light reflecting surface 11 in conjunction with the operation of the manual operating tool was shown. It is also possible to move the surface 11 itself. For example, in the case of the above embodiment, the lifting rod 14
A light reflecting surface 11 is formed at a position facing the through hole 21a on a member that moves up and down in conjunction with the lifting rod 1.
4 is raised by the handle 8, the light reflecting surface 11 escapes upward from the position immediately in front of the through hole 21a, and the photoelectric switch 9 is switched to the OFF state.
In addition, as shown in FIG. 5, a light reflecting surface 11 is formed at the tip of a vertically swinging arm 13 that interlocks with the handle 8 via a support shaft 12, so that the movement of the arm 13 when the handle 8 is operated is Accordingly, the light reflecting surface 11 can be configured to escape upward from the position immediately in front of the through hole 21a, and the photoelectric switch 9 is switched to the OFF state.

In either case, when the light reflecting surface is fixed in position and the light blocking plate is moved, or when the light reflecting surface is moved directly, the movement of the light blocking plate or the light reflecting surface is vertical, horizontal, horizontal, or linear movement. Or it may be any movement such as arc movement, angle change, etc.
Further, the interlocking structure with the manual operating tool can be arbitrarily configured depending on the movement form.

In the embodiment described above, the retroreflective photoelectric switch 9 and the light reflecting surface 11 are arranged at a position where the light path between them crosses the path of people walking when the door is open, and the light reflecting surface 11 is , the photoelectric switch 9 is turned off when the manual operating tool is operated, and the photoelectric switch 9 is turned off.
In this state, the opening/closing driving means 5 is configured so that the door does not close. Therefore, the photoelectric switch 9 is used not only as a signal source for transmitting a door opening command signal when a manual operating tool is operated, but also as a signal source for detecting the passage of a person and closing the door. This is preferable because it can also be used as a signal source to limit the door closing operation, but if another detection means is used in conjunction with the detection means that detects the progress of a person and serves as a signal source to limit the door closing operation, the retroreflective photoelectric switch 9 and the light beam may be used together. The reflective surface 11 can be placed at any position.

(Effects of the Invention) According to the automatic door device of the present invention that can be implemented as described above, the door is not opened unless the manual operating tool provided on the door body is operated, so that a person standing near the door cannot open the door. This eliminates the inconvenience of the door opening automatically or simply when a person passes in front of the door. Therefore, the automatic door device of the present invention can be effectively utilized in areas where this type of automatic door device cannot be used, such as entrances and exits of passageways for commuter vehicles and entrances and exits of stores at checkout counters.

Moreover, there is no need for any electrical parts such as switches on the door side that moves to open and close, and therefore there is no need to provide a special electrical path between the door and the solid side that is not affected by the opening and closing movement of the door, and the electrical system All can be provided on the fixed side. Therefore, it can be implemented at a very low cost, and the maintenance and inspection of the electrical system is easy, and it can be used as an automatic door device with a long service life and less risk of electrical system failure.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of the whole, Fig. 2 is an enlarged longitudinal sectional front view of the main part, Fig. 3 is a cross-sectional plan view of the same, Fig. 4 is a flowchart explaining the control procedure, and Fig. 5 shows a modified example. FIG. DESCRIPTION OF SYMBOLS 1... Door body, 2... Doorway, 3... Guide rail, 4... Wheel, 5... Opening/closing drive means, 6
...Close door limit switch, 7...Open door limit switch, 9
...Regression reflective photoelectric switch, 11... Light reflecting plate, 13... Vertical swing arm, 14... Lifting rod, 16... Light blocking plate, 17... Fixed plate, 18
...Compression coil spring, 19a, 20a, 2
1a...Through hole.

Claims (1)

[Scope of Claims] 1. A door body opened and closed by an opening/closing drive means includes a manual operating tool such as a handle, a light reflecting surface detected by a retroreflective photoelectric switch provided on the fixed side, and the manual operating device. In conjunction with the operation of the tool, the light input reflection path of the light reflection surface is blocked, or the light reflection surface itself is moved to turn on the photoelectric switch.
A detection state switching means for changing the OFF state is provided, and the opening/closing drive means is configured to operate the door opening by a change in the ON or OFF state of the retroreflective photoelectric switch when the manual operating tool is operated. door device. 2. The retroreflective photoelectric switch and the light reflecting surface are arranged at a position where the optical path between them crosses a pedestrian path when the door is open, and when the retroreflective photoelectric switch is in the OFF state, the 2. The automatic door device according to item 1, wherein the opening/closing drive means is configured so as not to operate to close the door.