JPS62185691A - Safety device for elevator door - Google Patents

Abstract

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

Description

[Detailed description of the invention]

(Purpose of the invention) (Usage field of 1lr size 2) The present invention is installed in a J3 car in an elevator.

[Regarding safety equipment for doors that can be knocked on; U. (Prior Art) Generally, a door safety device for this type of elevator is provided with a safety tissue at the tip of the opening/closing door so as to protrude outward, and when the opening/closing door is closed. , when it collides with the safety tissue, the left tissue is pulled into the opening/closing door by the reaction force, which activates the cover switch and opens the door.
The I door is designed to reopen the door (ree oven). On the other hand, non-contact detection means for elevator door safety devices include, for example, phototubes and ultrasonic sensors. That is, this type of elevator door safety device that has already been proposed is constructed as shown in FIG. At a3 in Fig. 9, a rail 2 is laid on the front side 1 of the east car 1 that goes up and down along the hoistway for goods, and this rail 2 is equipped with a safety tissue 3 for opening and closing. 4 is provided so as to be openable. Furthermore, several stages of light projectors 5 are arranged on a part of the opening/closing door 4, and a light receiver 6 is installed in a part of the car 1 facing the light projector 5. Therefore, in the elevator door safety device described above, when the fully open opening/closing door 4 starts to close, if the beam (light beam) from the projector 5 is cut off by the human body hat, the light receiver 6 detects this. This signal is detected and processed by the signal processing device 7 installed on the upper part of the car 1, and this processed signal is transmitted to the door v8 eye 1 device to open and close the door 4 which is in the closing process. The doors are about to reopen. In particular, the light projector 5 and the light receiver 6 used for the door 4 described above have a detection operation range that spans the entrance width of the car 1, that is, the entire opening area of the door 4. The part 'C-cutting cutting is also detected by the light receiver 6, and is processed by the signal processing device 7 to reopen the opening/closing door which is in the closing process. On the other hand, a reflecting mirror is installed in a part of the car 1 facing the light projector 11is5, and the beam from the light projector 5 is reflected in the direction Q4.
Elevator door safety equipment that reflects light from a mirror and detects the reflected light with a receiver installed near the projector 5.
There is b. <Problems that N Ming attempts to solve) However, the safety devices for the elevator doors mentioned in (a) above are all such as when the opening/closing door 1 starts to close (11), when the passenger is in a hurry or when passing near the entrance/exit, the safety device for the elevator door is When a passenger interrupts the beam, the light receiver 6 and the signal processing device 7 linked thereto immediately reopen the opening/closing door 4 in the door stroke. 1SI, when the reopening door q4 finishes closing, a wasteful reopening operation is performed, and this reopening door operation not only causes inconvenience to the passengers in the car 1, but also significantly reduces the operating efficiency of the elevator. The present invention has been made in view of the above-mentioned circumstances, and the present invention is designed to prevent the opening/closing door from being detected only when a detected object is detected within the distance detection range of the opening/closing door during the door closing operation. The purpose of this invention is to provide a safety device for elevator doors whose purpose is to improve the operation efficiency of UT elevators by allowing the doors to reopen. ) The present invention provides a car equipped with a safety tissue.
A door is provided, and a reflection type photodetector is provided on the opening/closing door to eliminate the door reopening operation at the previous station. (Function) The present invention receives a detection signal only when a detected object enters the detection area of the photodetector at the time of starting door closing.
It is designed to reopen a closed door. (Example) Hereinafter, the present invention will be explained with reference to an illustrated example. J3. The present invention will be described by assigning the same reference numerals to the same constituent members as in the above-described specific example. In FIGS. 1 to 4, reference numeral 1 denotes a car that goes up and down along the exit path of the building, and a rail 2 is laid in front of the car 1. 2 (
Also, a two-panel opening/closing door 4 equipped with a left tissue 3 is provided so as to be openable and closable. Further, a switch actuating cam 5 is illustrated above the opening/closing door 4, and a switch 6 is provided on the car 1 on the movement path of the switch actuating cam 5. On the other hand, a reflective photodetector (photoelectric switch) 7 is provided in the middle of the front end of the opening/closing door 4. There is a reflective type which has a large detection area and is smaller than the population width W of the car 1. That is, the photodetector 7 has a case 7 as shown in FIGS. 3 and 4.
A light emitting element 7b is provided inside a, and the optical path O of this light emitting element 7b is
There is a light projecting lens 7 Cjr R'A U on the top, and a detection object A in the detection area is in the case 7a below this light projecting lens 7c.
The light receiving lens 7d that receives the reflected light O' from f-J
3u, and a 1N detection element 7e is provided between the frame 41 and the die Δ which detects the reflected light O' from the light receiving lens 7d, and the detection signal of the position detection element 7C is H, (It is configured so that it is sent to the processing circuit 7r. Also,
A door command device 8 and a door opening/closing device 9 are connected to the signal processing circuit 7r via a switch 6. Accordingly, reopen the opening/closing door 4 of C1 car 1 IJ? In this case, the photodetector 7 measures according to optical triangulation, and the luminous flux of the light beam 7 b lp + et al.
It is converged by the light projecting lens 7C, and the light within the above detection area is focused.
li! Used for detecting objects. A part of the reflected light 0' from the detected object A passes through the light-receiving lens 7d and is sent to the head detection section 7e through the light switch 1.
Generate to. At this time, when the detected object A is at one point shown in FIG. When the optical slot 1- is located at point 2 of the non-detection area L' shown in the figure, the position detection element 7e
It is formed at point b. In this way, the position detection element 70 detects lpJ in the detection order
Detecting object A within L with the light spot at point a), then
This detection signal is sent to the signal processing circuit 7f, which determines that the object to be detected is in front of the restart door, and restarts the door.
When necessary, 1Δ8[yo,
SWITSUBU 6, t8 and door opening device 91＼
Sending 1. The opening/closing 1 no 1° 1 that is linked to this is the mountain - 1.
It's like the river yco 1° -). On the other hand, the switch operating cam 5 of the -1-Kimono open door 4 is closed 51'? )Culm C sweet f-6 is 0 Since the door opening device 9 does not move 0, the opening/closing f
Ji''4 is resumed+h Child 7e is fIiI
Since there is no I, the opening/closing door 4 will not reopen. Next, in another embodiment of the present invention shown in FIGS. 5 and 6, the east car 1 is provided with two double-opening doors 4, and each photodetector 7 is mounted on each double-opening door 4. It has the same 411 configuration as the specific example described above. In addition, in another embodiment of the present invention shown in FIGS. 7 and 8, the vehicle to be detected is driven to the left by J, and 11! ! 1) The east car 1 is provided with a 1t11 closing door 4 made of two pieces 17i1a door so as to open and open in the upward and downward directions, and a part of the photodetector 7 is installed on this opening and closing door 4. It has the same configuration as the specific example described above. Although the photodetector 7 used in the present invention is attached to the opening/closing door 4 of the east car 1 as described above, it may be installed on each floor, for example, without changing the gist of the present invention. You are free to change the configuration 1 so that a photodetector 7 is attached to the vehicle side door. [Effects of the Invention] As described above, according to the present invention, the opening/closing door 4 in which the east car 1 is provided with 116 renotices 3,
Detection order II is longer than the protrusion pressure H1 of the ffl door 4 and is shorter than the population width of the above-mentioned type car 1!
A reflection type photodetector 7 is installed with L to the right (), blank]]I' Previously, a detection signal was received only when the object to be detected entered the detection area of the photodetector. The above resumes 1 1゛ 4 m the door opens J, it's turning (・, I'll I+
Resume 17i"J while maintaining safety at 11(f)
I can just do it /i < , ]! ! (No use! I
! Since IJf11 is eliminated and IJf11 is eliminated, the operating efficiency of the elevator can be improved.

[Brief explanation of drawings]

FIG. 1 is a front view of an elevator car incorporating the safety device of the elm bake door according to the present invention, FIG. 2 is a cross-sectional view of the same vehicle, and FIG. 3 is a block diagram of the present invention. FIG. 4 is a diagram of a photodetector incorporated in the present invention, FIGS. 5 to 8 are diagrams showing other embodiments of the present invention, and FIG. 9 is an elevator door already proposed. FIG. 2 is a front view of the east car of an elevator incorporating a safety device. 1... Passenger car, 2... Rail, 3... Renotice, 4... Opening/closing door, 5... Switch operation cam, 6...
...Switch, 7...Photodetector, 8...Door opening command device, 9...Door opening head. Application fee j11 Sato - Yudo Figure 9

Claims (1)

[Claims] An opening/closing door equipped with a safety lock is provided on the passenger car, and a reflective photodetector having a detection area longer than the protruding distance of the safety shield and shorter than the width of the entrance of the car is installed on the opening/closing door, and the opening/closing door starts closing. A safety device for an elevator door, characterized in that the opening/closing door is reopened by receiving a detection signal only when a detected object enters the detection area of the photodetector.