JPS61127590A - Controller 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] [Field of Industrial Application] This invention prevents passengers from falling into the hoistway when only the car door opens due to failure of the locking device for the car door with the landing door. The present invention relates to a control device for an elevator door.

[Conventional technology]

Regarding elevator door management devices, for example,
This is disclosed in Japanese Patent Publication No. 35818 and Japanese Patent Publication No. 59-9475.

Of these, the former will be described as an example. In the case of this known document, when the car abnormally stops while traveling, the abnormality detection device detects the abnormality, and in this state, the car door is manually closed by the passenger inside the car. This activates the door open detection device and energizes the door closing device.

For this reason, if a passenger opens the car door and exits the car when the car stops abnormally, the car door will be prevented from automatically closing even if the cause of the abnormal stop has been resolved naturally. The car door automatically closes to prevent the car from going up and down.

FIG. 2(a) is a cross-sectional view showing a state in which the car door and the landing door are normally engaged. In this FIG. 2 (L), 1 is a landing, which has landing doors 2a and 2b, and a car 5 has car doors 3a and 3b.

The landing door 2a and the car door 3a are engaged by the engaging devices 4a and 4b, and there is no danger to the passengers 6 in the car 5 as long as they do not open the car door 3a.

[Problem that the invention seeks to solve]

However, when the car stops abnormally, as shown in Fig. 2(b)
As shown in , the engagement devices 4a and 4b are removed, and
If the passenger 6 in the car pries open the car door 3a or jams it, the passenger 6 lands normally with the vane detached, and as shown in the figure, only the car door 3a opens, and after a certain period of time, the car door 3a closes. , When there is a call from another floor, the car runs randomly.

In this case, when the car door 3a opens, the passenger 6 in the car 5
If the car gets into the gap between the car doors 3a, 3b and the landing doors 2a, 2b and the car doors close, there is a risk of personal injury.

This invention was made in order to solve this problem, and it is possible to stop the automatic closing of the car door when only the car door is opened, thereby preventing an accident resulting in two or more passengers falling into the hoistway due to rough running of the elevator. It is an object of the present invention to obtain a control device for an elevator door that can prevent such problems.

[Means for solving problems]

The elevator door control device according to the present invention is provided with a means for prohibiting automatic closing of the car door if it is detected that the car door is open for some reason when all the landing doors are closed. .

[For production]

In this invention, if it is detected that the landing door is closed when the car door is opened, if the car door opens in that state, the condition is not met and the door closing device is not activated even if a door closing command is issued. Deactivates the car door and prohibits the car door from closing and the elevator from starting.

〔Example〕

Embodiments of the elevator door control device of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit diagram of one embodiment. In FIG. 1, 11 is a power supply line to which a (+) voltage is applied. This voltage line 11 is connected to a first input terminal of an AND circuit 12 via hall door closing switches 10a to lOx and a resistor 19.

The landing door close switches 1 (la to 10x are turned on when the landing door of each floor is closed, and turned off when the landing door is open.The first input terminal of the AND circuit 12 is connected to the resistor 20. It is grounded through.

In addition, the power line 11 is connected to the car door close switch 11 and the resistor 2.
1 and the second of AND times #12 through inverter 14.
Connected to the input end. The input end of this inverter 14 is grounded via a resistor 22. The car door close switch 11 is turned on when the car door is closed, and turned off when the car door is opened.

The output terminal of the AND circuit 12 is connected to a flip terminal via a resistor 23.
It is connected to the set input terminal of a flop circuit $16 (hereinafter referred to as FF), and is also grounded via a capacitor 24. A reset input terminal of this FF 16 is connected to the power supply line 11 via a push button 17 (reset switch).

The output terminal of the FF 16 is connected to the second input terminal of the AND circuit 13 through the inverter 15. This AND circuit 1
A door closing command is inputted from the door closing command circuit 18 to the first input terminal of No. 3. The output end of the AND circuit 13 is connected to the door closing device 26, and is also configured to prohibit starting of the elevator.

Next, the operation of the elevator door control device of the present invention configured as described above will be explained. mosquito .

Let's start with the case where the door and landing door are normal.

In this case, by closing all the landing doors on all floors, all the landing door closing switches 10a to 10x are turned on, and the positive terminal is connected to the first input terminal of the AND circuit 12 through the landing door closing switches 10a to 10χ and the resistor 19. voltage, i.e. r
HJ level is input.

Further, the car door close switch 11 is turned on, and the inverter 14 is connected through the car door close switch 11 and the resistor 21.
The rHJ level is input to the AND circuit 12, and the rLJ level is applied to the second input terminal of the AND circuit 12.

As a result, the output of the AND circuit 12 becomes the rLJ level, the FF 16 is not set, the output of the inverter 15 becomes the rHJ level, and the second input terminal of the AND circuit 13 also becomes the rLJ level.
It becomes HJ level.

At this time, if a door close command at the rHJ level is issued from the door close command circuit 18, the output of AND circuit #113 becomes the rHJ level and is output to the door closing device 26. Therefore, the door closing device 26 is activated to maintain the closed state of the car door.

Next, when the car stops at a predetermined floor, the landing door and car door of that predetermined floor are opened. When any of the landing doors opens, any of the landing door close switches 10a to 10χ is opened, and the car door also opens, so the car door close switch 11 is opened.
is turned off, the output of the AND circuit 12 becomes rLJ level, and the subsequent operation is the same as described above.

In this case, the FF
16 is prevented from being set by a delay circuit including a capacitor 24 and a resistor 23.

Next, a case where only the car door opens will be explained.

In this case, all the landing doors on each floor are closed, and all the landing door closing switches 10a to 10x are turned on. Therefore, the first input terminal of the AND circuit 12 is 3, "H".
level is applied.

At this time, since the car door is open, the car door close switch 11 is turned off, and the output of IN, < - 14 is rHJ.
level. As a result, AND times Is12 (D
The output becomes "H" level, F F 1.6 is set, the output becomes rHJ level, is inverted by inverter 15, and the second input terminal of AND circuit 13 becomes rLJ.
level.

Therefore, at this time, even if the door closing command for the car door is output from the door closing command circuit 18, the output of the AND circuit 113 remains at the rHJ level, the door closing device 26 does not operate, and the car door closes. You won't be disappointed. Additionally, starting the elevator is prohibited. This eliminates the risk of passengers falling into the hoistway due to the car door opening and then closing with the landing door closed, as in the prior art.

〔Effect of the invention〕

As explained above, this invention prevents the car door from closing when it detects that the landing door is closed and opens the car door, so it closes after the landing door closes and the car door opens. The car does not run, and therefore there is no danger of passengers getting into the door compartment of the landing and falling out onto the hoistway, thereby further improving safety.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram of an embodiment of the elevator door control device of the present invention, and Fig. 2(a) shows a state in which the landing door and car door of a general elevator are normally engaged by an engagement device. FIG. 2(b) is a cross-sectional view showing a state in which only the car door is open even if the engaging device is disengaged. 10a-10b... Hall door close switch, 11... Car door close switch, 12, 13... AND circuit, 14°15... Inverter, 16... Flip-flop circuit, 18. Door close command Circuit, 26 - Door closing device. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent: Masuo Oiwa (2 others) Figure 1/1) tt to/lk: t4jishilηshikuirif/
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Figure (Unit Cb) Procedural amendment (voluntary)

Claims (1)

[Claims] The first circuit detects that only the car door is open when all the landing doors on each floor are closed. When this first circuit detects that only the car door is open, a door close command is issued. An elevator door control device comprising a second circuit that operates to prevent the car door from closing even if the car door is closed even if the car door is closed, and also prohibits the elevator from starting.