JP4165486B2 - Elevator car door device - Google Patents

Description

  The present invention relates to a car door device for an elevator that does not move up and down in a state where a foreign object is sandwiched and is considered in safety.

  The elevator device is mainly provided in an elevator car on which a person rides, a drive device for raising and lowering the elevator car, a landing door device provided on each floor, and an elevator car, and opens and closes in conjunction with the landing door device in a landing state. It consists of a car door device. In addition, the car door device is usually provided with a door driving unit, and the landing door device opens and closes in conjunction with the car door device.

In such an elevator apparatus, conventionally, foreign objects are detected so that the elevator car does not move up and down while foreign objects such as cords and strings extending between the hall and the elevator car are sandwiched between doors (for example, , See Patent Document 1). For example, when cleaning an elevator car with a vacuum cleaner, the power is pulled from the outside of the elevator device and the cleaner is brought into the elevator car. If the elevator car moves up and down accidentally in this state, it is very dangerous. Because of consideration.
CD-ROM of Japanese Utility Model No. 4-41313 (Japanese Utility Model Application No. 6-3976)

  In the elevator apparatus described in Patent Document 1, a foreign object detection antenna that moves together with the door is provided, and when the door is closed, the foreign object detection antenna moves from a landing such as a cord or a string to a foreign object that extends into the elevator car. When a contact is made, a detection signal is transmitted, and the door drive unit is operated by the input of the transmitted detection signal to cause the door to open, thereby informing the passenger of the presence of a foreign object.

  However, in the case of an elevator device in which the car door device is a suspended type, the door is configured such that a guide piece provided at the lower end of the door slides in a guide groove formed in the lower rail and opens and closes. Therefore, a gap is usually formed between the lower end of the door and the lower rail, and foreign matters such as cords and strings enter the gap according to the closing operation of the door, and this state can be resolved. Not easy.

  The foreign object detection antenna described in Patent Document 1 has a function of transmitting a detection signal, and it is necessary to control the operation of the door based on the detection signal transmitted by the foreign object detection antenna. Therefore, there is a problem that the configuration is not simple.

  The present invention has been made in view of such circumstances, and prevents foreign matter such as cords and strings from entering the gap between the lower end of the door and the upper end of the lower rail, An object to be solved is to provide an elevator car door device that can be detected with a simple configuration.

The present invention, in order to solve the above problems, the car door device for an elevator is above hanging equation squirrel door device provided on elevators basket, is formed between the upper end of the door of the lower end and the lower rail A foreign material extrusion piece that protrudes to the extent that it does not contact the upper end of the lower rail is provided in front of the lower end of the front end of the door, and protrudes upward to the extent that it does not contact the lower end of the door. A stopper that can be squeezed is provided near the door stop of the lower rail .

  In the present invention, secondly, the foreign material extruding piece is provided on the front surface of the door, and protrudes upward so as not to contact the lower end of the door. It is characterized by being provided.

According to the car door apparatus for elevators of the present invention, code, foreign matter such as string, rather than from entering the gap between the upper end of the door of the lower end and the lower rail, the foreign matter is extruded. The extruded foreign matter is caught between the door and the door stop, and the door is not completely closed. For this reason, the door closing detection means provided in advance in the door driving unit of the car door device does not operate, and the elevator car cannot be raised or lowered. The insertion of the foreign material is realized with a simple configuration.

Moreover , since the foreign material pushed out by the foreign material extruding piece rides on the stopper, the foreign material is reliably sandwiched between the door and the door stop. The detection of foreign matter is ensured.

  Hereinafter, the elevator car door device of the present invention will be described in more detail with reference to the drawings.

  FIG. 1 <a> <b> <c> are respectively a front view, a main part plan view, and a main part side view of an elevator car door device according to an embodiment of the present invention.

  The car door device 1 provided in the elevator car is a suspension type. At the lower end of the door 1 a provided in the car door device 1, two guide pieces 4 that slide in the guide groove 3 formed in the lower rail 2 are provided on the left and right sides. The opening and closing of the door 1a is guided by sliding. The door driving part 5 for opening and closing the door 1a is provided above the door 1a, and the door driving part 5 is provided with a door closing detecting means 6 for detecting a state in which the door 1a is completely closed. For example, a limit switch or the like can be used as the door closing detection means 6. In this case, when the door 1 a is completely closed and comes into contact with the door stop 7, the door is turned ON and an electric signal is transmitted, which is shown in the figure. Send to no control device. The closed state of the door 1a is detected in the control device by the input of the door closing detection.

  A foreign matter extruding piece 8 is disposed in the front at the lower end of the front end of the door 1a on the door stop 7 side. The foreign matter extruding piece 8 is located further on the door stop 7 side than the guide piece 4 provided on the door stop 7 side, and its lower edge is formed between the lower end of the door 1a and the upper end of the lower rail 2. The gap 9 is projected to the extent that it does not contact the upper end of the lower rail 2. That is, a gap d is formed between the lower edge of the foreign matter extruding piece 8 and the upper end of the lower rail 2. The size of the gap d is made smaller than the diameter of a foreign object such as a cord or string.

  In such an elevator car door device 1, as shown in FIG. 2, when a foreign object 10 such as a cord or string straddles the lower rail 2, the foreign object extruding piece 8 is moved along with the closing operation of the door 1 a. The foreign material 10 is pushed out in the closing direction of the door 1a. The foreign material 10 does not enter the gap 9 formed between the lower end of the door 1a and the upper end of the lower rail 2, and is pushed out by the foreign material extruding piece 8 in the closing direction of the door 1a. Therefore, the foreign substance 10 is prevented from entering the gap 9 formed between the lower end of the door 1a and the upper end of the lower rail 2, which is likely to occur in the upper suspension type car door device 1.

  A long hole 8a extending in the vertical direction is formed in a substantially central portion of the foreign matter extruding piece 8, and the foreign matter extruding piece 8 is attached to the lower end portion of the front end of the door 1a with screws 11 at two places on the upper and lower sides. Therefore, the foreign object 10 is not displaced in the opening / closing direction of the door 1a due to contact with the foreign object 10, and the foreign object extruding piece 8 can stably extrude the foreign object 10. In addition, the mounting height of the foreign material extruding piece 8 can be changed by the long hole 8a, and a constant extruding accuracy is always ensured even if the gap 9 formed by the mounting error of the car door device 1 differs depending on the elevator device. can do. Furthermore, the foreign object extruding piece 8 can be retrofitted to the door 1a of the existing car door device 1 by attaching the foreign object extruding piece 8 to the front surface of the door 1a with the screw 11.

  When the door 1a is further closed, the foreign material 10 such as a cord or string is sandwiched between the door 1a and the door stop 7 as shown in FIG. In this state, further closing operation of the door 1a is prevented and the door 1a is not completely closed. For this reason, the door closing detection means 6 shown in FIG. 1 does not operate, and the closed state of the door 1a is not detected. Therefore, a control device not shown in the figure controls the elevator car not to move up and down because there is no input of door closing detection.

Thus, in the car door apparatus 1, the foreign object pushing piece 8 which pushes out the foreign material 10 is provided in front of the lower end of the front end 7 side of the door 1a, and the existing door closing detection provided in the door driving unit 5 of the door 1a. The door closing detection by means 6 is used. For this reason, the foreign material 10 can be easily sandwiched between the door 1a and the door stop 7 without entering under the gap 9 formed between the lower end of the door 1a and the upper end of the lower rail 2. In addition, the detection of the foreign object 10 can be detected with a simple configuration.

  Further, as shown in FIGS. 1 and 3, the car door device 1 is provided with a stopper 12 that protrudes upward near the door stop 7 of the lower rail 2 so as not to contact the lower end of the door 1a. . When the door 1a is closed, the stopper 12 protrudes upward by a height that can be sunk into the lower end of the door 1a. That is, as shown by an arrow X in FIG. 3, a sufficiently small gap D is formed between the upper end of the stopper 12 and the lower end of the door 1a. Since the aforementioned foreign material extruding piece 8 is provided in front of the door 1a, the stopper 12 does not contact the foreign material extruding piece 8 as well. Such a stopper 12 can be made of rubber or the like, for example, and can be fitted into the guide groove 3 of the lower rail 2 and fixed. In this case, similarly to the foreign material extruding piece 8, the stopper 12 can be retrofitted to the lower rail 2, and can also be applied to the existing car door device 1. Further, the stopper 12 can be disposed in the vicinity of the door stop 7 integrally with the lower rail 2.

  With the arrangement of the stopper 12 described above, the foreign material 10 pushed out by the foreign material extruding piece 8 rides on the stopper 12 near the door stop 7 as shown by arrows Y and Z in FIG. For this reason, the foreign object 10 is reliably sandwiched between the door 1a and the door stop 7, and the detection of the foreign object 10 is ensured.

  Of course, the present invention is not limited to the above embodiment. It goes without saying that various aspects are possible with respect to details such as the configuration and structure of the door drive section and the door closing detection means.

<a> <b> <c> are respectively a front view, a main part plan view, and a main part side view showing an embodiment of an elevator car door device according to the present invention. It is the front view which showed the state when a door closes, and its X, Y, Z arrow line view. It is the front view which showed the state in which the door pinched the foreign material, and its X, Y, Z arrow line view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car door apparatus 1a Door 2 Lower rail 3 Guide groove 4 Guide piece 5 Door drive part 6 Door closing detection means 7 Door stop 8 Foreign substance extrusion piece 8a Elongate hole 9 Crevice 10 Foreign object 11 Screw 12 Stopper

Claims (1)

In an elevator car door device in which the car door device provided on the elevator car is a suspension type, the gap formed between the lower end of the door and the upper end of the lower rail protrudes so as not to contact the upper end of the lower rail. A foreign object push piece is provided in front of the lower end of the front end of the door, and a stopper that protrudes upward to the extent that it does not touch the lower end of the door and can be pushed under the door is located near the lower rail door stop. An elevator car door device characterized by being provided .

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