JPH0450296Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a ceiling rescue door device for rescuing passengers who are trapped inside a car due to an elevator malfunction. This invention relates to an improvement in a start-up prevention switch that closes in conjunction to prevent the start of an elevator.

[Conventional technology]

Generally, a rescue exit is formed in the ceiling of an elevator car to rescue passengers who are trapped inside the car when the elevator stops due to a malfunction, and this rescue exit is normally blocked by a rescue exit door. ing. To briefly explain this using Fig. 4, reference numeral 1 in the figure indicates the elevator car room, 2 indicates a ceiling plate constituting the ceiling of the elevator car room, and 3 indicates a lighting unit integrally provided on the upper part of the ceiling plate 2. In the case, a rescue exit 4 is formed on the ceiling side of the car room (the upper end of the lighting case 3 in this example), and a rescue exit door 5 whose one side edge is pivoted with a hinge 5a etc. opens and closes. It is set freely. Note that 5b is a handle portion of the rescue exit door 5.

In addition, in the above-mentioned elevator car room 1, the rescue exit 4 part on the ceiling side is equipped with a startup prevention switch that prevents the elevator from starting when the rescue exit door 5 is opened, as shown in FIGS. 5 and 6. As shown in FIG. When the operating end 6a is pressed by the free end portion of the rescue exit door 5 opposite to the pivot portion, the contact is closed and the elevator can be started, as is clear from the start prevention circuit shown in FIG. It is configured so that.

Note that 7 in the figure is a screw for fixing the rescue exit door 5 to the car room ceiling side 3 when the rescue exit door 5 is closed.

In the above-described configuration, by opening the rescue exit door 5 in order to rescue a passenger trapped in the car room 1, the micro switch 6 is opened, and the elevator is turned off during the rescue operation. This prevents problems from occurring once the computer is started up and started working.

[Problem that the invention attempts to solve]

However, according to the conventional configuration described above, since the micro switch 6 is used as the activation prevention switch, if the contacts opened and closed by the operating end 6a projecting upward are fused together, the rescue exit door 5 is opened. However, even if the start-up prevention circuit remains closed, there is a risk that the elevator may start up and move.

Further, as described above, according to the micro switch 6 in which the operating end 6a projects upward, a passenger or the like may accidentally step on or touch the operating end 6a of the switch 6 when exiting from the rescue exit 4. There are also problems such as storage of the switch 6, which may lead to damage or malfunction of the switch 6. In order to solve this problem, it is necessary to protect the switch with a strong protective cover so that passengers do not touch the switch operating end 6a and cause malfunction, or to prepare a switch with a strong structure. However, even if such a structure is adopted, it lacks reliability and causes problems such as the structure being complicated and expensive.

Furthermore, as a solution to such damage or malfunction of the switch 6, for example,
As shown in Publication No. 167967, etc., a structure is known in which a micro switch 6 is provided on the door side and its operating end 6a protrudes so as to come into contact with the ceiling side. Even if this is adopted, problems such as the fusion of the switch contacts as described above cannot be avoided, and it is desired that some kind of countermeasure be taken to eliminate these problems.

The present invention has been developed in view of the above-mentioned circumstances, and has a structure that allows a start-up prevention switch that prevents the elevator from starting when the rescue exit door is opened to be opened reliably, regardless of whether the contacts are fused or the like. The purpose of the present invention is to obtain an inexpensive ceiling rescue door device for an elevator car that is simple, has excellent operational reliability, and is excellent in terms of safety.

[Means for solving problems]

According to the ceiling rescue exit door device for an elevator car according to the present invention, when the rescue exit door whose one side edge is pivotally supported to open and close the rescue exit on the ceiling side of the elevator car opens and closes, the rescue exit door is opened. The activation prevention switch for preventing the activation of the emergency exit door is constructed of a shorting contact provided opposite the other edge of the rescue exit door and the ceiling of the car room, and a fixed contact shorted by the shorting contact.

[Effect]

According to the present invention, since the short-circuit contact and the fixed contact are separately provided on the rescue exit door side and the car compartment ceiling side, even if the short-circuit contact and the fixed contact are fused when the door is closed, Just by opening the rescue exit door, it can be mechanically peeled off and separated, which ensures that the start-up prevention circuit is opened, eliminating the risk of the elevator starting up during the rescue process, making it safer. Superior in terms of sex.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

Figures 1 to 3 show an embodiment of the elevator car ceiling rescue exit door device according to the present invention, and these figures are the same as or equivalent to the above-mentioned Figures 4 to 7. The same numbers are given to the parts, and the explanation thereof will be omitted.

Now, according to the present invention, one side edge of the rescue port 4 is connected to the side edge of the rescue port 4 via a hinge or the like so as to open and close the rescue port 4 formed on the ceiling side of the car room (the upper end of the lighting case 3 in this embodiment). The rescue exit door 5 is provided with a start prevention switch 10 that is opened when the rescue exit door 5 is opened and prevents the elevator from starting. It consists of a short-circuit contact 11 provided through a material 12, and fixed contacts 13 and 14 provided through an insulating material 15 on the ceiling side of the car compartment (on the side of the lighting case 3) opposite to this short-circuit contact 11. It has some characteristics. In addition, 16 in the figure is a protective case 16 for protecting the activation prevention switch 10 from passengers or rescue workers during rescue operations and preventing damage to the switch 10.
A is the fixed contact 13, 14 inside this protective case 16.
This is an opening for opening the space in which the short circuit contact 11 is disposed at the upper end of the lighting case 3 and inserting the short circuit contact 11 therein.

Further, according to this embodiment, when the door is opened, the fixed contact 1
3 and 14 is provided, which is provided with a rotatable protective cover 20 that closes the opening 16a on the upper end side of the lighting case 3. That is, as is clear from FIGS. 1 and 2, when the door is closed, the protective cover 20 is locked to the tip of the door 5 to be in the open state, and the protective cover 20 is
When the opening 16a is opened, the opening 16a is rotated by the biasing force of the spring hinge 21 to automatically close the opening 16a. In addition, 22 in the figure is a spacer attached to the side part of the lighting case 3.

According to such a configuration, the short circuit contact 1
1 and fixed contacts 13 and 14 are separately arranged on the rescue exit door 5 and lighting case 3 sides, so even if the short circuit contact 11 and fixed contacts 13 and 14 are fused together when the door is closed, Even if the rescue exit door 5 is opened, it can be mechanically peeled off and separated, and the startup prevention circuit can be reliably opened. There is no risk of causing any problems, and it is excellent in terms of safety.

In addition, in the configuration in which the short-circuit contact 11 is divided from the fixed contacts 13 and 14 and fixed to the rescue exit door 5 side as described above, unless the rescue exit door 5 is completely closed and fixed with the screw 7, It also has the advantage of being advantageous from a safety point of view, since a closed circuit condition cannot be obtained and the elevator does not move.

Further, as described above, the switch 10 is constructed by attaching the protective cover 20 so as to be rotatable by a simple spring hinge 21 and configuring the protective cover 20 to automatically close when the door is opened. This is a great advantage because it can eliminate problems such as when a passenger or the like swings at the contacts, especially the fixed contacts 13, 14, etc., causing the elevator to start. Of course, when the door is closed, it is preferable to open the protective cover 20 again by hand.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part may be modified and changed as appropriate. For example, in the embodiment described above, the short-circuit contact 1 constituting the activation prevention switch 10 is
1 on the other side edge of the rescue exit door 5, and fixed contacts 13, 1
Although a case has been described in which the contacts 11, 13, and 14 are provided facing each other on the side of the lighting case 3, which is the ceiling side of the car room, the present invention is not limited to this, and it is also possible to provide the contacts 11, 13, and 14 in reverse. It should be obvious.

Further, in the above-mentioned embodiment, the case where the rescue exit 4 is formed on the upper end side of the lighting case 3 has been described, but this is formed on the car room ceiling board 2 to pivotally support the rescue exit door 5. It will be easily understood that a start prevention switch 10 may be provided between the ceiling plate 2 and the ceiling plate 2.

[Effect of idea]

As explained above, according to the ceiling rescue exit door device for an elevator car according to the present invention, the rescue exit door that is pivotally supported to open and close the rescue exit on the ceiling side of the elevator car opens and closes during the opening operation. The start prevention switch that prevents the elevator from starting is configured with a short-circuit contact provided opposite the other edge of the rescue exit door and the ceiling of the car room, and a fixed contact that is short-circuited by this, making it simple and inexpensive. Despite the configuration,
Since the short-circuit contact and the fixed contact are placed separately on the rescue exit door and the ceiling side, the rescue exit door will open even if the short-circuit contact and the fixed contact are fused when the door is closed. This ensures that the startup prevention circuit becomes open, eliminating the risk of the elevator starting, which is superior from a safety standpoint, and furthermore prevents passengers from touching it during rescue. It has various excellent practical effects, such as being able to eliminate problems such as malfunctions and damage to switches due to such problems.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view of essential parts showing an embodiment of an elevator car ceiling rescue exit door device according to the present invention;
Figure 2 is an enlarged sectional view of the main parts showing the operating state when the door is opened, Figure 3 is a circuit diagram showing the activation prevention circuit, and Figure 4 is the elevator car and the rescue exit door installed on the ceiling side. FIGS. 5 to 7 are an enlarged perspective view of a main part of a conventional example and a diagram of its activation prevention circuit. 1...Elevator car room, 2...Ceiling board, 3...
...Lighting case, 4... Rescue exit, 5... Rescue exit door,
10...Start prevention switch, 11...Short circuit contact,
13, 14... fixed contact, 16a... opening, 2
0...Protective cover, 21...Spring hinge.

Claims (1)

[Scope of utility model registration request] A rescue exit door formed on the ceiling side of the car room, one edge of which is pivoted to the side edge of the rescue exit so as to open and close the rescue exit, and a rescue exit door that is opened when the rescue exit door is opened to start the elevator. and a start-up prevention switch for preventing the start-up, and the start-up prevention switch includes a short-circuit contact provided opposite to the other side edge of the rescue exit door and the ceiling side of the car room, and a fixed contact that is short-circuited by the short-circuit contact. A ceiling rescue exit door device for an elevator car, characterized by: