JPS6153990B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an unlocking device for an elevator landing side door.

Generally, elevator landing side doors are designed so that they cannot be opened from the outside on floors where no car is parked inside to prevent accidents such as falling into the elevator hoistway.

However, because it is necessary to rescue passengers who are trapped in the car due to an elevator malfunction and to perform other elevator inspection and maintenance work, conventional elevators are equipped with landing side doors A ₁ and A on each floor, as shown in Figure 1. ₂ , A ₃ ...... Among A _o-1 and A _o , hook holes B ₁ and B _o for unlocking devices are provided only for the landing side doors A ₁ and A _o on the lowest and top floors. Well, that hook hole
The landing side doors A ₁ and A _o can be opened from the outside by inserting special hooks (not shown) into B ₁ and B _o .

With this, for example, when rescuing a passenger, the electromagnetic brake of the hoisting machine of the elevator is loosened, the elevator is manually operated, the car (not shown) is moved to the top floor or the bottom floor, and then the car is moved to the top or bottom floor. After confirming that the car is near the landing on the top or bottom floor, insert a special hook into the hook hole B ₁ or B _o of the unlocking device to unlock the landing side door A ₁ or A _o. They were rescued by opening it. In addition, during maintenance and inspection work, with the car stopped on the floor one floor below the top floor, the landing side door _Ao on the top floor is opened using the special hook as above, and the worker can access the car from there. Climb on top of the car and inspect and maintain the various equipment on the top of the car, move the car while inspecting and maintain the various equipment in the hoistway, and stop the car on a floor other than the bottom floor to inspect and maintain the equipment on the bottom floor landing side. Door _A1 was opened using a special hook, and workers entered the pit at the bottom of the elevator hoistway to inspect and maintain various equipment below the car and inside the pit.

Here, as mentioned above, in the conventional elevator in which only the landing side doors A ₁ and A _o of the bottom floor and the top floor were equipped with unlocking devices, there were almost no mistakes such as accidental falls by inspectors. In other words, the landing side door that can be opened with a hook has two doors on the bottom floor and the top floor indicated by A ₁ and A _o .
It was easy to tell whether you were on the top floor or the bottom floor of the building because there were only one person in the building, and it was also possible to fall from the top floor into the elevator hoistway if you mistakenly thought you were on the bottom floor, which could be fatal. From what I know, the landing side door A _o on the top floor is the landing side door A ₁ on the bottom floor.
There was hardly any misunderstanding. However, it cannot be said that such misunderstandings never occur, and it was a safety problem.

Moreover, recently, as shown in Figure 2, each landing side door A on every floor has been designed so that even non-specialist building managers and firefighters can rescue passengers who are trapped in cars due to power outages. ₁ , A ₂ , A ₃ …A _o-1 ,
A _o All have hook holes for unlocking devices B ₁ , B ₂ , B ₃ …………B _o
-1 , B _o are installed and can be opened from the outside by inserting a special hook into them and operating them.In the case of such elevators, power outages and When the floor indicator lights C ₁ , C ₂ , C ₃ ……C _o-1 and _Co are not lit, it is difficult to judge which floor you are on, and you rush to rescue without checking. There was a risk that people would open the door with only this in mind, which would inevitably lead to a fall accident.

This invention was made in view of the above circumstances, and its purpose is to determine which floor of the building you are on when you unlock the landing side door by inserting a special hook into the hook hole. To provide an extremely effective safety measure that can be recognized without fail and can prevent an accident of falling into an elevator hoistway due to misunderstanding.

An embodiment of the present invention will be described below with reference to the drawings. First, as described in Fig. 1, there are hook holes B ₁ , B _o for the unlocking device only in the landing side doors A ₁ , A _o on the top and bottom floors.
In the _case of _{elevators equipped with} When tightening and fixing with nuts 2, together with them, there is a floor display D _o for indicating the top floor consisting of a triangular plate-shaped upward arrow piece 3 and a bottom floor display consisting of an inverted triangular plate-shaped downward arrow piece 4. Install floor display D ₁ . Note that the arrow pieces 3 and 4 of each floor display D ₁ and D _o are thin pieces having fitting pieces 3 a and 4 a in the center, and when fitted to the outer periphery of the hook holes B ₁ and B _o ,
By inserting B ₁ and B _o into panel 1 and tightening them with nuts 2, they are fixed to the hook holes B ₁ and B _o , and at the same time, the spaces between the outer end flanges of the hook holes B ₁ and B _o and panel 1 are fixed. It can be mounted by clamping it to the

Therefore, floor markings D ₁ , D _o are placed around the hook holes B ₁ , B _o.
If these are installed, workers can insert special hooks into the hook holes B ₁ and B _o to open the landing side doors A ₁ and A _o on the bottom or top floor when inspecting and maintaining the elevator or rescuing passengers. When inserting the lock to unlock it, use the hook hole B ₁
Or, the floor indicator D ₁ of the downward arrow piece 4 for indicating the lowest floor or the floor indicator D o of the upward arrow piece ₃ for indicating the top floor provided around the hook insertion opening of B _o must be visible. The worker then opens the landing side door _A1 or _Ao after fully recognizing whether he or she is on the bottom floor or the top floor of the building. Accidents such as those caused by misunderstanding _Ao and opening the elevator thinking they were on the bottom floor and falling into the elevator shaft will be eliminated.

Next, as shown in Figure 2, the landing side doors on all floors
A ₁ , A ₂ , A ₃ ...... A _o-1 , A _o have hook holes B ₁ , B ₂ , B ₃ ...... B _o-1 , B _o for the unlocking device, respectively. In the case of an elevator, the panels 1 of the landing side doors A ₁ , A ₂ , A ₃ ……A _o-1 , A _o on each floor
When inserting the hook holes B ₁ , B ₂ , B ₃ ...B _o-1 , B _o in the same manner as above and tightening them with nuts 2,
As shown in Figure 5 a and b (the hook hole B ₃ on the third floor of the building)
(Illustrated only at the mounting part of the figure and other parts omitted) A floor indicator E for indicating each floor, consisting of a letter strip 6 on which a floor number 5 is written, is attached together with the hook hole. In addition,
This letter piece 6 also has a fitting hole 6a and is similarly attached and fixed.

Therefore, the landing side doors A ₁ , A ₂ , A ₃ on each floor...
Each hook hole of A _o-1 , A _o B ₁ , B ₂ , B ₃ ...B _o-1 ,
By installing a floor indicator E consisting of a letter strip 6 with a floor number 5 corresponding to each floor around B _o , workers can use the hook hole to open the landing side door on any floor of the building. When you insert the special hook to open the lock, you will definitely see the floor number 5 on the letter strip 6 of floor display E, so you can definitely recognize the floor number you are on from the floor number 5 and go to the landing side. The door can now be opened, which eliminates the possibility of people accidentally falling into the elevator shaft from an upper floor.

The unlocking device of the present invention is not limited to the above-mentioned embodiments; for example, the hook hole is round, but it may have any other suitable shape, and the hook hole may be installed in a position on the landing side. In addition to the door panel, it can also be placed on the doorway frame. In addition, although arrow pieces 3 and 4 or letter pieces 6 are used to indicate floors, the floor number 5 may be written on the arrow pieces 3 and 4 themselves, or the top and bottom floors can be marked by coloring. Any suitable material may be used as long as it is possible to identify a floor or an intermediate floor.Furthermore, the mounting and fixing means around the hook hole of the floor display may be changed as appropriate, and arrow pieces or letter pieces may not be used. arrow directly on the outer end surface of the hook hole,
It may be constructed by adding floor indications such as symbols and numbers, and other changes may be made as appropriate without departing from the gist of the present invention.

Since this invention has been made as described above, when the special hook is inserted into the hook hole to unlock and open the landing side door from the outside, the hook can be easily opened by inserting the special hook into the hook hole and unlocking it from the outside by having a floor marking on the outer end surface of the hook hole or around it. Since you can always recognize which floor of the building you are on when plugging in, you may mistakenly think you are on the lower floor even though you are on the upper floor and inadvertently open the landing side door. This is extremely effective in terms of safety measures, as it can prevent accidents such as falling into the elevator hoistway.

[Brief explanation of the drawing]

Figure 1 is a front view of the side door of each floor landing of an elevator with hook holes for unlocking devices on the top and bottom floors, and Figure 2 shows hook holes for unlocking devices on all floors. Figures 3a and 3b are front views and partial cross-sectional views of the hook holes and floor markings of the top floor landing side door showing an embodiment of the present invention. , FIGS. 4a and 4b are a front view and a partial sectional view of the installation state of the hook hole of the bottom floor landing side door and the floor sign in the same embodiment, and FIGS. 5a and b are other embodiments of the present invention. FIG. 6 is a front view and a partial sectional view showing an example of how the hook hole of the landing side door of the intermediate floor and the floor display are attached. A ₁ , A ₂ , A ₃ …A _o-1 , A _o … Landing side door, B ₁ , B ₂ , B ₃ … B _o-1 , B _o … Hook hole, 1
... Panel, 2 ... Nut, D ₁ , D _o , E ... Floor display, 3, 4 ... Arrow piece, 3a, 4a ... Fitting hole, 5 ... Floor number, 6 ... Character Piece 6a... Fitting hole.

Claims (1)

[Claims] 1. On floors where the elevator car does not stop inside, in an elevator landing side door unlocking device that is configured so that the door cannot be opened from outside without using a hook, the outer end surface of the hook hole. An unlocking device for an elevator landing side door, characterized in that a floor display is provided around the door.