JPS62191388A - Safety device for elevator door - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides an elevator door safety device comprising a pair of left and right doors whose opening/closing directions intersect and abut against each other at the center;
In particular, it relates to an elevator door safety device using a photoelectric device.

[Conventional technology]

Figures 3 and 4 are, for example,
This figure shows the conventional elevator door safety device shown in the publication. In the figure, (1) l (i') is the car door, (2) is the car door (1), ) guide rail, (8) is the hanger roller of the car door (1), (1'), (4) is the sill of the passenger car door (1), (1'), (5)
), (6) is a photoelectric device consisting of a light projector and a light receiver, and (7) is its optical axis.

The conventional elevator door safety device is constructed as described above, and the optical axis (7) of the photoelectric device (5) l (6) runs parallel to the opening/closing direction of the car door (1), (1'). Passengers or luggage passing between the left and right doors (1) and (1') are detected. [Problems to be solved by the invention] In the conventional elevator door safety device as described above, the photoelectric device <5) Since the direction of the optical axis (7) in (6) matches the opening/closing direction of the car doors (1) and (1'), the opening/closing directions of the left and right doors intersect and meet in the center. In the case of a passenger car door or a landing door, there is a problem that the receiver cannot receive the light from the projector, making it unusable.

The present invention was made to solve this problem, and an object of the present invention is to provide an elevator door safety device that can operate normally even when the opening and closing directions of the left and right doors intersect.

[Means for solving problems]

The elevator door safety device according to the present invention has a light emitter and a light receiver installed on each of the left and right doors at an angle t with respect to the opening/closing direction of each door, so that the light from the floodlight can be constantly received by the receiver while the door is being opened and closed. It's a friend.

[Function] In this invention, the projector and receiver are installed at an angle with respect to the opening/closing direction of each door, and the light from the projector can always be received by the receiver while all the doors are open/closed. Even in the case of a door having a structure in which the opening and closing directions of the two doors intersect and meet at the center, it is possible to operate the door normally.

〔Example〕

1 and 2 show an embodiment of the present invention, and in the figures, the same reference numerals as in FIGS. 3 and 4 indicate the same or corresponding parts. <11. (1') is a pair of car doors whose opening/closing directions intersect and abut against each other at the center; (8) I
(a') is a photoelectric device (phrase) on the car door (1), (1').

(6) Photoelectric equipment with mounting brackets for complete installation! (51,
(6) t - Door (1) so that its optical axis (γ) always coincides during opening and closing of the door.

It is installed at an angle to the opening/closing direction of (1').

The passenger doors (1) and (1') are driven synchronously by a drive mechanism (not shown). In the elevator door safety device constructed as described above, the door opening shown in Fig. Photoelectric devices (5) I
The optical axes (7) of (6) coincide.

From this state, when the car doors (1), (1') are closed synchronously and at the same distance and speed by a drive mechanism (not shown), the optical axis (γ) of the photoelectric device t (61, (6) , will move in parallel from the initial position in proportion to the moving distance of the car door (IL('')), and will always match until the door is closed as shown in Figure 2. The same applies when doing so.

Therefore, regardless of the opening/closing position of the car door (IL (1')), the optical axis (7) of the photoelectric device (51, (6)
) match, and therefore the photoelectric device (51, (6)k) can be operated normally.

In addition, in the above-mentioned embodiment, the reference to the passenger car doors (1) and (1') can be similarly applied to the case of the landing door door. In this case, the photoelectric devices (51, (61) may be attached to both the door of the landing and the door of the car, or may be attached to only one of the doors.

〔Effect of the invention〕

As explained above, this invention installs the projector and the receiver at an angle to the opening/closing direction of each door,
Since the light from the projector can be received by the receiver at all times while the door is opening and closing, normal operation can be achieved even when the opening and closing directions of the left and right doors intersect and they meet in the center. Since normal operation can be obtained in the entire opening/closing range, an elevator door safety device with a high degree of safety can be obtained.

[Brief explanation of drawings]

FIG. 1 is a plan view of an elevator door safety device according to an embodiment of the present invention when fully opened, FIG. 2 is a similar plan view of the same when fully closed, and FIG. 3 is an entrance/exit showing a conventional elevator door safety device. The front view and FIG. 4 are its plan views. (IL (1') Fist...Car door (51, (6)--Photoelectric device (7)...Optical axis (8), (8')-Φ/Mounting brackets in each figure. The same reference numerals indicate the same or equivalent parts.

Claims (2)

[Claims] (1) A pair of left and right doors whose opening/closing directions intersect and abut against each other at the center, a drive mechanism that drives the pair of doors in synchronization, a floodlight attached to one door, and a door to the other door. The light emitter and the light receiver are each installed at an angle to the opening and closing direction of each door, so that the light from the emitter can be constantly received by the receiver while the door is opened and closed. Elevator door safety device. (2) A pair of doors to which the emitter and receiver are attached are:
The elevator door safety device according to claim 1, wherein the elevator door safety device is at least one of a car door and a landing door.