JP2009113932A - Entrance/exit device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an entrance/exit device of an elevator capable of more surely detecting starting of traveling of a car in a state of a thin string-shaped foreign matter nipped between elevator doors. <P>SOLUTION: Openings 5a and 12a are provided in upper frames 5 and 12. The openings 5a and 12a are provided in a portion opposed to a door stop side end part of the elevator door of a full door close state. In the upper frames 5 and 12, a detection switch 21 for detecting the string-shaped foreign matter pinched between the elevator doors is provided. The detection switch 21 has a contact bar 22 arranged to face the openings 5a and 12a. The detection switch 21 is operated by displacement of the contact bar 22 by the foreign matter entering the upper frames 5 and 12 from the openings 5a and 12a. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator entrance / exit device including an entrance / exit frame having an upper frame provided at an upper portion of an entrance / exit.

  In a conventional elevator safety device, a sensor that detects a unique vibration sound generated by rubbing and moving an object sandwiched between doors is used to detect that a slender and soft string-like object is sandwiched between doors. (For example, refer to Patent Document 1).

JP 2006-312510 A

  In the conventional elevator safety apparatus as described above, there is a possibility that sound necessary for detection may not be generated when an object that is thin and has little surface friction is sandwiched between elevator doors. Also, depending on the position where the object is sandwiched, there is a possibility that no sound is detected by the sensor even when the car starts to move.

  The present invention has been made to solve the above-described problem, and can more reliably detect that a car has started running while a thin string-like foreign object is sandwiched between elevator doors. The purpose is to obtain an elevator doorway device.

  An elevator doorway apparatus according to the present invention is provided in an upper door frame having an upper frame having an upper frame provided with an opening at a portion facing an end-of-door side end portion of an elevator door in a fully closed state, and facing the opening. A detection switch that is operated when a foreign object enters the upper frame from the opening is provided.

  According to the elevator doorway apparatus of the present invention, when a car is moved while a thin string-like foreign object is sandwiched between elevator doors, the foreign object moves along the door-end side end of the elevator door and is drawn into the opening. Since the switch is operated, it is possible to more reliably detect that the car has started running while a thin string-like foreign object is held between the elevator doors.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a front view showing an elevator hall entrance / exit device according to Embodiment 1 of the present invention. In the figure, the hall entrance 1 is opened and closed by a pair of hall doors 2 which are elevator doors. A landing three-way frame 3 as an entrance / exit frame is provided on the left and right sides and the upper part of the landing entrance 1. The landing three-way frame 3 includes a pair of landing doorway vertical frames 4 a and 4 b provided on the left and right sides of the landing doorway 1, and a horizontal landing doorway upper frame 5 provided above the landing doorway 1. Yes.

  A landing-side opening (notch) 5 a is provided at the center of the landing entrance upper frame 5. The landing-side opening 5a is provided at a portion facing the door-end side end portion of the landing door 2 in the fully closed state. A landing button device 6 is installed on the landing wall.

  FIG. 2 is a front view showing the elevator car doorway apparatus according to the first embodiment. In the figure, the car 7 is provided with a car entrance 8. The car entrance 8 is opened and closed by a pair of car doors 9 that are elevator doors. Further, a car entrance / exit frame 10 is provided on the left and right sides and the upper part of the car entrance 8. The car entrance / exit frame 10 includes a pair of car entrance / exit vertical frames 11 a and 11 b provided on the left and right sides of the car entrance 8, and a horizontal car entrance upper frame 12 provided at an upper portion of the car entrance 8. Yes.

  A car side opening (notch) 12 a is provided at the center of the car entrance upper frame 12. The car-side opening 12a is provided in a portion facing the door-end side end portion of the car door 9 in the fully closed state. A car operation panel 13 is installed on the wall of the car room.

  FIG. 3 is a perspective view showing the inside of the landing entrance upper frame 5 and the car entrance upper frame 12 of FIGS. 1 and 2. In the upper frames 5 and 12, a detection switch 21 for detecting a string-like foreign material sandwiched between the landing door 2 and the car door 9 is provided. The detection switch 21 has a contact bar (operation unit) 22 disposed so as to face the openings 5a and 12a. Further, the detection switch 21 is operated by the contact rod 22 being displaced by foreign matter entering the upper frames 5 and 12 from the openings 5a and 12a.

  The detection switch 21 is connected to the elevator control device 30 via the electric wire 23. When a foreign object is detected by the detection switch 21, the elevator control device 30 makes the car 7 emergency stop and notifies the monitoring panel (not shown) of the occurrence of an abnormality.

  The upper frames 5 and 12 are provided with a cover 24 so as to close the openings 5a and 12a. The cover 24 allows foreign matter to enter the upper frames 5 and 12 when pressed by the foreign matter. An example of such a cover 24 is a plastic plate that is cut so as to be broken when a foreign object hits it. Moreover, what attached the steel plate of the same shape as opening 5a, 12a from the upper frames 5 and 12 with the adhesive tape etc. may be used.

  In the upper frames 5 and 12, a cutter 25 is provided facing the openings 5a and 12a as cutting means for cutting foreign matter that has entered the upper frames 5 and 12 from the openings 5a and 12a. The contact bar 22 and the cutter 25 are arranged so that the foreign matter that has entered the upper frames 5 and 12 from the openings 5a and 12a hits the contact bar 22 first. Further, the blade of the cutter 25 is inclined with respect to a horizontal surface.

  Here, FIG. 4 is an explanatory view showing a state where the car 7 is raised while the string-like foreign matter is sandwiched between the landing doors 2 of FIG. 1 and between the car doors 9 of FIG. As the string-like foreign material, for example, when the car 7 is lifted while the pet neck string 26 is sandwiched between the landing door 2 and the car door 9, as shown in FIG. The middle portion of the neck strap 26 comes into contact with the cover 24 of the landing side opening 5a and enters the landing entrance upper frame 5 from the landing side opening 5a. Thereafter, the contact rod 22 is operated by the neck string 26, and the neck string 26 is cut by the cutter 25.

  On the other hand, FIG. 5 is an explanatory view showing a state where the car 7 is lowered while the string-like foreign matter is sandwiched between the landing doors 2 of FIG. 1 and between the car doors 9 of FIG. When the car 7 is lowered while the neck string 26 is sandwiched between the landing door 2 and the car door 9, the neck string 26 moves upward along the gap between the car doors 9 in the car 7 as shown in FIG. 5. The intermediate portion of the neck string 26 is brought into contact with the cover 24 of the car-side opening 12a and enters the car entrance upper frame 12 from the car-side opening 12a. Thereafter, the contact rod 22 is operated by the neck string 26, and the neck string 26 is cut by the cutter 25.

  FIG. 6 is a flowchart showing the operation of the elevator control device 30 of FIG. The elevator control device 30 monitors whether at least one of the car 7 and the detection switch 21 provided at the plurality of landings has been operated (step S1). When the detection switch 21 is actuated, the brake is actuated and the car 7 is brought to an emergency stop (step S2). Then, the occurrence of abnormality is reported to the monitoring panel (step S3).

  When an abnormality is reported on the monitoring panel, the maintenance staff checks the safety and checks the equipment, and if there is a malfunction or breakage of the equipment, the part is repaired. Then, after confirming that there is no trouble in driving, normal driving is resumed.

  In such an elevator hall entrance / exit device, when the car 7 is moved while the fine string-like foreign matter is sandwiched between the hall door 2 and the car door 9, the foreign matter is moved along the door-end side ends of the doors 2 and 9. Since it moves and is pulled into the openings 5a and 12a and the detection switch 21 is operated, it is more reliably detected that the car 7 has started running while the thin string-like foreign matter is sandwiched between the doors 2 and 9. can do.

Moreover, since the cover 24 is provided in the openings 5a and 12a, it is possible to prevent the design from being deteriorated and to prevent malfunction due to mischief.
Furthermore, since the cutter 25 is disposed inside the openings 5a and 12a, the string-like foreign matter can be cut to prevent the device from being damaged.

Note that the cutting means is not limited to the cutter 25, and various modifications can be made in order to cut the string-like foreign material more reliably.
Further, the detection switch 21 and the cutter 25 are not necessarily provided on both the landing entrance upper frame 5 and the car entrance upper frame 12. Moreover, it does not necessarily need to provide in the upper frame 5 of the hall entrance / exit of all the floors.
Furthermore, in the above example, the detection switch 21 that is mechanically operated by a foreign substance is shown. However, the detection switch 21 is not limited to this, and may be a non-contact switch using, for example, an optical sensor.
Furthermore, in the above example, the center opening type door structure is shown, but the present invention can also be applied to a single opening type door structure. In this case, the opening is provided at the end portion on the opposite side of the upper frame.

1 is a front view showing an elevator hall entrance / exit device according to Embodiment 1 of the present invention; 1 is a front view showing an elevator car entrance / exit device according to Embodiment 1. FIG. It is a perspective view which shows the inner side of the hall entrance upper frame and the car entrance upper frame of FIG.1 and FIG.2. It is explanatory drawing which shows the state which the cage | basket | car went up between the landing doors of FIG. 1 and between the cage doors of FIG. It is explanatory drawing which shows the state which the cage | basket descend | falls with the string-like foreign material being pinched | interposed between the landing doors of FIG. 1, and between the cage doors of FIG. It is a flowchart which shows operation | movement of the elevator control apparatus of FIG.

Explanation of symbols

  2 landing door, 3 landing 3-way frame (entrance / entrance frame), 5 landing entrance / exit upper frame, 5a landing side opening, 7 car, 9 car door, 10 car entrance / exit frame, 12 car entrance / exit frame, 12a car side opening, 21 detection switch , 24 cover, 25 cutter (cutting means), 26 neck string (foreign matter).

Claims (3)

An entrance / exit frame having an upper frame provided with an opening at a portion facing the door-contacting side end portion of the elevator door in a fully closed state, and provided in the upper frame facing the opening, and from the opening to the upper frame An elevator entrance / exit device comprising a detection switch that is operated when foreign matter enters the door. The elevator according to claim 1, further comprising a cover that is provided on the upper frame so as to close the opening and allows the foreign object to enter the upper frame when pressed by the foreign object. Gateway device. 3. The elevator according to claim 1, further comprising a cutting unit that is provided in the upper frame so as to face the opening and cuts foreign matter that has entered the upper frame from the opening. Doorway equipment.

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