JP5757589B2 - Smoke detector inspection port of elevator - Google Patents

Description

  Embodiments of the present invention relate to an elevator smoke detector inspection port.

  A smoke detector is installed in the elevator hoistway in preparation for a fire. The smoke detector is housed behind the opening of the smoke detector inspection port for convenience of inspection.

  If smoke due to fire is detected by the smoke detector while the elevator is running, the car goes straight to the nearest floor to stop evacuation, and a control operation is performed to evacuate passengers (for example, Patent Document 1). ).

  By the way, the smoke detector inspection port is provided with a door or a lid, and the inspection port is normally closed by these. When inspecting firefighting equipment, the inspection door is opened and the smoke detector is taken out for inspection.

  In the inspection of the smoke detector, it is the basic part of the inspection work to confirm that the elevator has stopped operating in advance, but in the conventional smoke detector inspection port, the elevator is running. Even when the inspection opening was opened, the elevator did not stop. For this reason, it was expected that an unexpected accident would occur if the inspection box opening was opened in the situation where the elevator was not stopped.

  Therefore, recently, in order to enhance safety, when the smoke detector inspection door is opened, the elevator is stopped when the smoke detector is inspected. It is required by law to provide a switch on the door so that the power is turned off and an emergency stop occurs.

JP-A-2-231382

  However, while the elevator is running, a smoke detector inspection door may be opened by a third party other than the inspection personnel. In this case, the power of the elevator is cut off and the passenger may be trapped in the car in order to stop suddenly.

  The present invention has been made in view of the problems of the prior art, and even when the smoke detection inspection door is accidentally opened while the elevator is running, the elevator does not stop suddenly, The purpose of the present invention is to provide an elevator smoke detector inspection port that can reduce the risk of being trapped in a car.

In order to achieve the above object, the present invention relates to an elevator smoke sensor inspection port for inspecting a smoke detector for detecting smoke due to a fire rising up an elevator hoistway, and an opening of the smoke sensor inspection port. The inspection door that opens and closes the door is a double door comprising an outer door that is attached to the outer door frame so as to be openable and closable, and an inner door that is attached to the inner door frame disposed inside the outer door frame. The door is configured, the inner door is provided with a first switch that detects opening and closing, the outer door is also provided with a second switch that detects opening and closing, and the outer door is opened during elevator travel, When the inner door is closed, the elevator is landed on the nearest floor without stopping.

1 is a perspective view showing an elevator hall to which an elevator smoke detector inspection port according to the present invention is applied. It is a front view of the smoke detector inspection port of the elevator by one Embodiment of this invention. It is a front view which shows the state which the smoke detector inspection port of the elevator of FIG. 2 opened. It is a flowchart which shows the operation | movement of an elevator when the smoke detector inspection port of the elevator by one Embodiment of this invention is opened.

  Hereinafter, an embodiment of an elevator smoke detector inspection port according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a hall on the top floor of an elevator provided with a smoke detector inspection port according to the present embodiment. FIG. 1 shows a state where the car 11 has arrived at the landing and the hold door 12 is open. An operation panel 13 is provided at the landing. Reference numeral 14 indicates an operation button, and reference numeral 15 indicates cab lighting.

  In FIG. 1, reference numeral 20 indicates a smoke detector inspection port. The smoke detector is installed at the top of the hoistway so that smoke rising up the hoistway can be detected with certainty.Therefore, a hole leading to the hoistway is made in the wall of the landing on the top floor. A smoke detector inspection port 20 is installed. The smoke detector is accommodated in the depth of the opening of the smoke detector inspection port 20, and the smoke detector can be taken out and inspected by opening the smoke detector inspection port at the time of inspection. it can.

  Here, FIG. 2 is a view showing the front surface of the smoke detector inspection port 20, and FIG. 3 is a view showing a state in which the smoke detector inspection port 20 is opened.

  In this embodiment, the door that opens and closes the smoke detector inspection port 20 has a double door structure. Reference numeral 22 indicates an outer door on the outside, and 21 indicates an outer door frame. The outer door 22 is attached to the outer door frame 21 through a hinge or the like so as to be freely opened and closed. An inner door 23 is further provided inside the outer door 22, and the inner door 23 is attached to an inner door frame 24 housed inside the outer door frame 21 through a hinge or the like so as to be freely opened and closed.

  As shown in FIG. 3, when the inner door 23 is opened, the interior is a space that communicates with the hoistway, and the smoke detector 30 is installed.

  The inner door frame 24 is provided with an inner door switch 26 that detects that the inner door 23 has been opened. When the inner door 23 is closed, the lever 27 is tilted and the switch is turned on, and when the inner door 23 is opened, the lever 27 is raised and the switch is turned off.

  Similarly, the outer door frame 21 is provided with an outer door switch 28 that detects that the outer door 22 has been opened. When the outer door 22 is closed, the lever 29 is tilted and the switch is turned on. When the outer door 22 is opened, the lever 29 is raised and the switch is turned off.

  The on / off signals of the inner door switch 26 and the outer door switch 28 are transmitted to the elevator control device, and the elevator control device is operated by the smoke detector inspection port 20 during traveling of the elevator according to the flowchart shown in FIG. The elevator is controlled when it is opened.

  The elevator smoke detector inspection port according to the present embodiment is configured as described above. Next, its operation and effects will be described.

  In the flowchart of FIG. 4, first, it is assumed that the outer door 22 is opened at the smoke detector inspection port 20 during the traveling of the elevator (step S10). When the outer door 22 is opened, the lever of the outer door switch 28 is raised and the switch is turned off (step S11).

  When an off signal is transmitted from the outer door switch 28 to the control device (yes in step S12), the process proceeds to step S13, and it is confirmed whether or not the inner door switch 26 is turned off.

  The situation where the inner door 23 remains closed and the inner door switch 26 remains on at this time has caused the third person to open the outer door 22 without knowing the smoke detector inspection port. In some cases, it is assumed that the inspection door is accidentally opened even though the person in charge of the inspection is traveling the elevator.

  Therefore, when the inner door switch 26 is on (step S13: yes), the traveling car 11 is landed on the nearest floor (step S14), and the car door and the hold door are opened (step S14). S15), evacuating the passenger from the car 11;

  Thereafter, after the car room illumination 15 is turned off (step S16), the car door and the hold door 12 are closed (step S17). When the hold door 12 is closed, the operation button 14 becomes invalid.

    On the other hand, in the situation where the inner door switch 26 is turned off in step S13 (no in step S13), there is a danger that the inner door 23 is also opened after the outer door 22 while the elevator is running. Therefore, the safety circuit is interrupted and the elevator is stopped (step S18).

  By the way, if the outer door 22 of the smoke detector inspection port 20 is accidentally opened, if the user notices it and immediately closes the outer door 22 (no in step S12), it will return to normal operation first. It has become.

  As described above, even if the smoke detector inspection port 20 is accidentally opened while the elevator is running, the elevator is not stopped and the passenger is trapped because the door is doubled. It is possible to reduce the risk of being lost.

  The operation during the traveling of the elevator has been described above. During regular inspection, the elevator is stopped in advance, and then the outer door and the inner door of the smoke detector inspection port 20 are opened.

  The elevator smoke detector inspection port of the elevator according to the present invention has been described with reference to the preferred embodiments. However, these embodiments are given as examples and are not intended to limit the scope of the invention. Of course, the novel apparatus, method and system described in the specification can be implemented in various forms, and various omissions, substitutions and changes can be made without departing from the spirit of the present invention. is there. The claims and their equivalents are intended to cover the embodiments or improvements thereof within the spirit of the invention.

DESCRIPTION OF SYMBOLS 11 ... Car, 12 ... Hold door, 13 ... Control panel, 14 ... Car room illumination, 15 ... Operation button, 20 ... Smoke detector inspection port, 21 ... Outer door, 22 ... Outer door frame, 23 ... Inner door, 24 ... Inner door frame, 26 ... Inner door switch, 28 ... Outer door switch, 30 ... Smoke detector

Claims (3)

At the elevator smoke detector inspection port to check the smoke detector that detects smoke from fire rising up the elevator hoistway,
An inspection port door that opens and closes the opening of the smoke detector inspection port is attached to an outer door that can be freely opened and closed to an outer door frame, and an inner door frame that is disposed inside the outer door frame. and the inner door, configured to double doors consisting of, in said door is provided a first switch for detecting the opening and closing, provided a second switch for detecting the open and close to the outer door, the elevator cars An elevator smoke detector inspection box characterized in that when the outer door is opened and the inner door is closed, the elevator is landed on the nearest floor without stopping. Said second switch, immediately after detecting that the outer door is opened, when the outer door is closed, according to claim 1, characterized in that return to normal operation of the elevator Elevator smoke detector box. It detects that the second switch is opened of said outer door, then further when the first switch detects that opened the said door, elevator shut safety circuit stops The elevator smoke detector box according to claim 1.

Images