JP3557350B2 - Elevator safety equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an elevator safety device for preventing a passenger's hand or the like from being caught between a side portion of an entrance and a door when the door is opened.
[0002]
[Prior art]
FIG. 5 is a front view of a conventional elevator car door and its surroundings as viewed from the car interior. Here, an example of a typical two-door two-door opening type, which is one of typical door types, is shown. . In the figure, 1 is a car floor, 2a and 2b are cab walls provided on the car floor 1, 3a and 3b are skirting boards provided at lower ends of the cab walls 2a and 2b, and 4 is a cab This is a ceiling provided on the walls 2a and 2b.
[0003]
5a and 5b are a pair of entrance columns fixed to the car room walls 2a and 2b, 6 is an upper plate provided between upper end portions of the entrance columns 5a and 5b, and 7 is entrance columns 5a, 5b and an upper plate 6. , 8a and 8b are car doors for opening and closing the doorway 7, 9 is attached to the upper plate 6, and a position indicator for displaying the position of the car, and 10 is attached to the car room wall 2a. Operation panel.
[0004]
Next, FIG. 6 is an enlarged front view showing a main part of FIG. 5, and FIG. 7 is a sectional view taken along line VII-VII of FIG. In the figure, reference numeral 11 denotes a tape switch which is attached to the back side of the entrance / exit columns 5a, 5b (the surface facing the doors 8a, 8b of the car) and senses the pressure. As shown in FIG. A hollow covering 12 attached to the entrance / exit columns 5a and 5b, a pair of conductors 13 and 14 provided in the covering 12 and facing each other, and an elastic insulating portion interposed between the conductors 13 and 14. 15 and 16.
[0005]
In such an elevator, when a passenger's hand or the like is drawn between the entrance columns 5a, 5b and the car doors 8a, 8b when the door is opened, the conductor 13 is pressed via the coating 12, and the conductor 13 and the conductor 13 are pressed. 14 comes into contact. As a result, a signal is output to a control panel (not shown) of the elevator, and the car doors 8a and 8b are inverted.
[0006]
Next, FIG. 9 is a front view showing another example of a conventional elevator cab. Here, an example of a two-door, two-door, single-door type, which is one of typical door types, is shown. In this example, the doorway 7 is opened by moving both the low-speed side door 17a and the high-speed side door 17b to the door pocket on the back side of the car room wall 2a. Accordingly, the pull-in prevention tape switch 11 similar to that of FIG. 8 is arranged only on the back side of the entrance pillar 5a.
[0007]
[Problems to be solved by the invention]
In the conventional elevator configured as described above, although the pull-in when the door is opened can be detected by the tape switch 11, the pull-in cannot be prevented beforehand by the tape switch 11 alone. Further, since the size of the gap between the entrance / exit columns 5a, 5b and the car doors 8a, 8b (or the gap between the entrance / exit column 5a on the door pocket side and the low-speed side door 17a) is small, the thickness of the tape switch 11 is small. Is, for example, 1 mm or less, and the reliability of the tape switch 11 cannot be sufficiently secured.
[0008]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an elevator safety device capable of preventing a draw-in when a door is opened and improving safety can be provided. The purpose is to get.
[0009]
[Means for Solving the Problems]
The safety device for an elevator according to the present invention is provided on an entrance post on the side of the entrance to the car, and when the door is opened, the door protrudes instantaneously from the entrance post in the door closing direction to warn the user that the door is open by tactile sensation. The movable body is provided.
[0010]
The elevator safety device according to the present invention includes a flexible cover provided on the doorway post , which is pressed by the movable body when the door is opened, deformed, and protrudes in the door closing direction .
[0011]
An elevator safety device according to a third aspect of the present invention is an elevator safety device, comprising: an electromagnet which is excited in response to a door-open signal; an operating plate which is attracted by the electromagnet to move the movable body instantaneously; And restoring means for restoring the image.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an attached state of an elevator safety device according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. In the figure, reference numeral 21 denotes a safety device provided on each of the entrance columns 5a and 5b (in the case of a single door type, an entrance column 5a on the side of a door pocket) to prevent the door from being retracted when the door is opened. Is installed.
[0013]
FIG. 3 is a configuration diagram showing the safety device 21 of FIG. 1, and FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. In the figure, reference numeral 22 denotes a cover for covering the step 5c provided on the entrance pillars 5a and 5b. The cover 22 is made of a flexible material such as rubber, for example. Reference numeral 23 denotes a case fixed to the entrance columns 5a and 5b via the mounting seat 24, and reference numeral 25 denotes an electromagnet fixed in the case 23. The electromagnet 25 has an iron core 26 and a coil 27. .
[0014]
Reference numeral 28 denotes a reciprocatingly provided inside the case 23, and an operation plate that is attracted by the electromagnet 25 is fixed to the operation plate 28 so as to face the electromagnet 25. The magnet plate 30 is provided between the case 23 and the operation plate 28, and is a plurality of return rubbers as restoring means for restoring the operation plate 28 to the standby position when the electromagnet 25 is not excited.
[0015]
Reference numeral 31 denotes a plurality of operation shafts whose base ends are fixed to the operation plate 28, and reference numeral 32 denotes a backing plate as a movable body fixed to the front end of the operation shaft 31 and in contact with the inner surface of the cover 22.
[0016]
Next, the operation will be described. When a door opening display signal (a pulse signal for about 1 to 2 seconds before the door is opened) is output from the control panel immediately before the door is opened, a DC current flows through the coil 27 and the electromagnet 25 is excited. As a result, the magnet plate 29 and the operating plate 28 are attracted to the electromagnet 25 while compressing the return rubber 30, and the operating shaft 31 and the contact plate 32 are moved leftward in FIGS. At this time, since the cover 22 is made of a flexible material, the cover 22 is deformed so as to be pressed by the backing plate 32 and project to the entrance 7. However, since the cover 22 is deformed (expands or contracts) while being fixed to the entrance / exit columns 5a, 5b, there is no step or gap between the cover 22 and the entrance / exit columns 5a, 5b.
[0017]
In this manner, the cover 22 protrudes toward the entrance 7 immediately before the door opening operation, so that when the passenger's hand or the like is in contact with the cover 22, the passenger is warned with a tactile sensation. Therefore, retraction at the time of opening the door is prevented.
[0018]
Further, after a predetermined time has elapsed after the electromagnet 25 has been excited and the current supplied to the coil 27 is interrupted, the magnet plate 29 and the operating plate 28 are separated from the electromagnet 25 by the restoring force of the return rubber 30, The operation shaft 31 and the backing plate 32 are restored to the standby position. As a result, the shape of the cover 22 is also restored, and the surface of the cover 22 is flush with the surfaces of the entrance columns 5a and 5b.
[0019]
In such a safety device 21, since the passenger can be notified of the opening of the door by a tactile sensation immediately before the door opening operation, retraction at the time of opening the door can be prevented beforehand, and safety can be improved. . Further, since the surface is covered with the flexible cover 22, even if a passenger's hand or the like is about to be pulled in, it can be easily pulled out.
[0020]
In addition, the installation position and the number of the safety devices 21 are not particularly limited. For example, in the case of a single-opening elevator, the safety devices 21 may be provided only on the door pocket side.
In the above example, only the safety device 21 is provided. However, the safety device 21 can be used together with the tape switch 11 shown as a conventional example.
Further, in the above example, the safety device 21 is provided at the entrance 7 on the car side, but it is also possible to provide it at the entrance on the landing side.
[0021]
【The invention's effect】
As described above, the safety device for an elevator according to the first aspect of the invention moves the movable body to the entrance side when the door is opened, thereby providing a movable body for giving a tactile warning that the door is opened to the side of the entrance to the car. Since it is provided in the portion, the retraction when the door is opened can be prevented beforehand, and safety can be improved.
[0022]
In the elevator safety device according to the second aspect of the present invention, since the flexible cover which is pressed by the movable body when the door is opened and is deformed and protrudes toward the entrance is provided on the side of the entrance, the movement of the movable body causes the cover to move. It is possible to prevent a step or a gap from being generated around the vehicle, and even if the passenger's hand or the like is about to be retracted, the passenger can easily pull out the passenger.
[0023]
An elevator safety device according to a third aspect of the present invention provides an elevator safety device, which includes an electromagnet that is excited in response to a door-open signal, an operating plate that is attracted by the electromagnet and moves a movable body, and restores the operating plate to a standby position when the electromagnet is not excited. And a restoring means for causing the movable body to more reliably operate with a simple configuration.
[Brief description of the drawings]
FIG. 1 is a front view showing an attached state of an elevator safety device according to an example of an embodiment of the present invention.
FIG. 2 is a sectional view taken along line II-II of FIG.
FIG. 3 is a configuration diagram illustrating the safety device of FIG. 1;
FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;
FIG. 5 is a front view of a conventional elevator car door and its surroundings viewed from the inside of the car.
FIG. 6 is an enlarged front view showing a main part of FIG. 5;
FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;
FIG. 8 is a sectional view of the tape switch of FIG. 6;
FIG. 9 is a front view showing another example of a conventional elevator cab.
[Explanation of symbols]
7 Doorway, 8a, 8b Basket door, 21 Safety device, 22 Cover, 25 Electromagnet, 28 Working plate, 30 Return rubber (restoring means), 32 Patch plate (Movable body).

Claims (3)

It is provided on an entrance pillar on the side of the entrance to the car, and has a movable body for giving a tactile warning that the door is opened by instantaneously protruding from the entrance pillar in the door closing direction when the door is opened. Elevator safety features. 2. The safety device for an elevator according to claim 1, further comprising a flexible cover provided on the doorway post , which is deformed by being pushed by the movable body when the door is opened and protrudes in the door closing direction . An electromagnet that is excited in response to the door opening signal, an operating plate that is attracted by the electromagnet and moves the movable body, and a restoring unit that restores the operating plate to a standby position when the electromagnet is not excited. The elevator safety device according to claim 1 or 2, wherein

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