JPS6366084A - Doorway safety device for elevator - 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 [Object of the Invention] (Field of application in the GI industry) The present invention relates to an elevator entrance/exit safety device.

(Prior Art) Generally, an elevator is j1! As a door for descent;
! Ijo-A'Q A side-opening door with one door for exiting and one for the car room is often used, and passengers press the call button installed at the entrance on the landing side of each floor. Call for a car, board the car when the boarding area and car door open, press the push button for the destination floor installed on the entrance/exit side of the car, close the door, and move the car up and down to the destination floor. The door opens and you can get off to the landing side.

By the way, in such an elevator.

As a large number of unspecified passengers unconsciously or unconsciously call for cars, open and close doors, and get on and off the train, it is important to ensure safety when going eastbound.

The door is equipped with various safety devices.

There are 9 safety devices for this type of door closing operation.
Normally, mechanical safeties, electromagnetic safeties, ultrasonic sensors, photoelectric switches, etc. are used, but the truth is that there are not enough AI systems for safety when opening doors. Therefore, especially in elevators, the doors must be chained with chains t'2 according to the fire prevention regulations i-'1).
; ij not installed the rig! Since there are many cases where auto 1.7 or :f:1. Unlike the bus door, it is sometimes impossible to tell when the door will open.

Also, when waiting for a car on the landing side of each floor, it is difficult to tell when the car has arrived unless you keep your eyes on the car position indicator. The door may open suddenly due to a call from.

In such a case, for example, if an infant or the like is playing on the landing side and leaning against the door on the landing side, or if the car is under contract and a passenger is pressed against the door on the car side, the door may open. During operation, there is a risk that hands and fingers may be drawn between the frame forming the doorway and the door, resulting in injury, and sufficient safety measures must be taken in such cases.

Therefore, as shown in FIG. 6, this type of safety device has conventionally been designed so that, for example, a hand H is caught in a gap a between a vertical frame 3 and a door 4 forming an entrance 2 on the side of a car compartment 1. At the time, the deflection of the door 4 can be detected, or by attaching a tape switch to the vertical frame 3, a switching operation can be performed when the tape switch is pressed with a finger H, or a part of the vertical frame 3 can be freely moved. Vertical frame 3 when pressed with hand H
Various methods have been proposed in which the movement is activated by a switch installed on the back side.

(Problem to be Solved by the Invention) However, the above-mentioned conventional safety devices directly detect that the hand H is caught between the door 4 and the frame 3, and do not cause serious injury. Although it can be prevented,
There is still the problem that fingers and the like are pinched, and in some cases, there is a risk of causing minor injuries.

The present invention has been made under the above circumstances, and its purpose is to solve the essential problem of conventional safety devices, that is, to detect the pinching of fingers, etc., instead of detecting the pinched object. To provide an elevator entrance/exit safety device with higher safety, which can detect foreign objects such as fingers before fingers or the like are caught.

[Configuration of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention maintains a certain gap with respect to the vertical frame forming the entrance/exit of the car room or the landing area. A photoelectric sensor in which a recess is provided in the longitudinal direction of the side facing the vertical frame door at an entrance/exit of an elevator in which a side-opening door is installed so that the door can be freely opened and closed, and light is emitted and received along the longitudinal direction within the recess. The structure includes a foreign object detection means consisting of:

(Function) That is, by having the above configuration, the present invention has the following features:
Since foreign object detection means consisting of a photoelectric sensor that emits and receives light is provided in a recess provided in the longitudinal direction on the side facing the door of the vertical frame forming the entrance/exit of the elevator,
When a finger or finger approaches the vertical frame facing the door and is inserted into the recess, the photoelectric sensor can detect a foreign object at the same time, so the foreign object detection signal from this photoelectric sensor is linked to the door opening/closing mechanism. If the opening and closing of the door is controlled to stop immediately, it is possible to stop the opening and closing of the door at IN, which can prevent hands and fingers from getting caught between the door and the vertical frame, thereby preventing minor injuries. This can be prevented and dangers can be avoided.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings shown in FIGS. 1 to 5. In addition.

In the illustrated embodiment of the present invention, the same reference numerals are used to describe the parts that have the same structure as the conventional elevator entrance shown in FIG.

As shown in FIGS. 1 and 2, the vertical frame 3 forming the entrance 2 of the car room 1 has a vertical frame 3 on the surface facing the door 4, with the upper end and the lower end leaving about 100 m in the longitudinal direction. A recess 31 is provided, and a light emitter 5a and a light receiver 5b constituting the photoelectric sensor 5 are housed in the upper and lower ends of the recess 31, facing each other.

The optical axis is irradiated along the internal longitudinal direction of the recess 31.

By the way, the size of the recess 31 is the minimum size that allows the fingertip to be inserted without touching the door 4 side, and is approximately 15 square meters to 20 meters square. The output signal is input to the door control circuit via a cable, and if a signal is input during the door opening operation, the door drive is changed such as temporarily stopping the door opening operation or reversing the door closing operation. forming a system.

Further, in the car room 1, the left and right sides of the vertical frame 3 forming the entrance/exit 2 are fixed to an interior panel 6, and the upper part thereof is fixed to a curtain plate 8 having a built-in indicator 7. It is configured by being fixed to the ceiling 9.

On the other hand, the pair of left and right car side doors 4 that open and close the entrance 2 of the car 1 in a sideways manner are equipped with decorative joints 11 to which cushion rubber 10 is fixed on the opening and closing ends, and a door hanger is attached to the upper part. A hanger roller 13 rotatably supported by a hanger roller 12 is suspended from a door rail 14 fixed to the side of the car compartment 1, and a door shoe 16 is attached to the lower part of the hanger roller 13 in a groove of a sill 15 fixed to the floor of the car compartment 1. It is inserted and guided in the opening direction.

That is, the door safety device described above, as shown in FIGS.
When the tool approaches the gap a between the vertical frame 3 and the door 4 and is inserted into the recess 31, the optical axis is blocked and the light from the emitter 5a no longer reaches the receiver 5b, thereby restricting the door opening operation. This prevents the fingers H from being caught in the gap a between the vertical frame 3 and the door 4. In this way, when the finger H approaches the vertical frame 3, the recess 31
When inserted into the door, it is detected by the photoelectric sensor 5, and the door opening control is changed based on the detection signal, and the door is stopped before it is caught between the door 4 and the vertical frame 3, thereby making it possible to avoid the -C danger. I have to.

In addition, as shown in FIG. 5, even if the door 4 is opened when the passenger M is standing near the vertical frame 3 of the doorway 2 when the car 1 is full, the optical axis is not aligned with the vertical frame 3. Since it passes through the recess 31, the passenger's body, arms, etc. are blocked by the side surfaces of the vertical frame 3 and do not enter into the recess 31, so the optical axis is not obstructed.

There is no problem in opening the door. Furthermore, when the door begins to open and a passenger gets on or off near the entrance, the same thing happens, and if there is no problem with the door opening operation, some part of the passenger's body may
1 enters the recess 31 only when it approaches the gap a between the vertical frame 3 and the door 4. In this case, the optical axis is blocked and the object is detected reliably before it gets caught in the gap a. It becomes possible to do so. As a result, objects of a size that cannot be caught in the gap between the vertical frame 3 and the door 4 are not detected even if they come near, and objects of a certain size or smaller that could be caught approach. It is designed to be able to operate selectively only at certain times.

Note that the present invention is not limited to the above-mentioned embodiments, and can be used not only for the door on the car side but also on the first landing side.

In addition, only a part of the vertical frame forming the entrance/exit is made into a recess in the longitudinal direction, but this is done for the sake of ease of manufacturing.

Full length of the frame: 1; Even if a crossing recess is provided and the photoelectric sensor is installed on the curtain plate portion and the floor surface, the same functions and effects as those of the present invention can be exerted.

Furthermore, regarding the types of photoelectric sensors mentioned above, in the specific example, we have explained using a transmissive type that has one emitter and one receiver, but it is possible to integrate the emitter and receiver and have a reflecting plate on the opposing surface! (A two-position reflective photoelectric sensor may also be used.

Furthermore, the function of the recess formed in the frame is to identify objects large enough to be caught in the gap between the door and the door, thereby preventing malfunctions during normal boarding and egress. In addition, an optical axis is installed outside the frame near the gap with the door, and a plate-shaped or rod-shaped object is installed as a separate part to guard the optical axis and fixed to the frame, floor, curtain board, etc. Alternatively, it is possible to use a condensing lens or the like to set the optical axis just in front of the gap between the aperture frame and the door to detect the approach of an obstacle and give a warning before opening the door.

Other 1 It goes without saying that the present invention can be modified in various ways without departing from the gist of the present invention.

[Effects of the Invention] As is clear from the above description, according to the present invention, light is projected and received in a recess provided in the longitudinal direction of the side facing the vertical frame door forming the entrance/exit of the elevator. Since foreign object detection means consisting of a photoelectric sensor is provided, the foreign object can be detected by the photoelectric sensor at the same time when a finger or the like approaches the vertical frame facing the door and is inserted into the recess.
If the foreign object detection signal from this photoelectric sensor is linked to the door opening/closing mechanism and controlled to immediately stop the opening/closing of the door, the door can be opened/closed before a hand or finger gets caught between the door and the vertical frame. It is possible to provide an elevator entrance/exit safety device which has the excellent effect of preventing even minor injuries and avoiding danger.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of an entrance/exit provided with an elevator entrance/exit safety device according to the present invention, Fig. 2 is a longitudinal sectional view of the entrance/exit, and 3L! 1 is an external perspective view of the main parts, FIG. 4 is an explanatory diagram showing the operating state, FIG. 5 is an explanatory diagram of the safety device in a fully occupied state, and FIG. 6 is an operating state at the elevator entrance of the conventional structure. It is an explanatory diagram. 1... Car room, 2... Doorway, 3...
・Vertical frame, 31... recess, 4... door,
5...Photoelectric sensor. L...Optical axis, H...Finger. Applicant's representative Patent attorney Takehiko Suzue Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] In the entrance/exit of an elevator where a horizontally swinging door is installed so that it can be freely opened and closed by maintaining a certain gap with respect to the vertical frame forming the entrance/exit of a car room or a landing area, in the longitudinal direction of the side facing the door of the vertical frame. 1. An elevator entrance/exit safety device, characterized in that a recess is provided, and a foreign object detection means comprising a photoelectric sensor that emits and receives light along the longitudinal direction of the recess is provided.