JP2008063018A - Door device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door device of an elevator having door panels opening/closing the entrance of the elevator, and capable of quietly and smoothly operating the door panels without generating noise. <P>SOLUTION: This door device is provided with the door panels 4a and 4b vertically movably suspended by balancing with weights 12a and 12b in terms of weight, and opening/closing the entrance 2 of a car 1 by vertical movement thereof, and a linear motor 15 vertically moving the door panels 4a and 4b. The two door panels 4a and 4b close the entrance 2 by being arranged by shifting the positions thereof forward and backward and in the vertical direction, and open the entrance 2 by the upward movement at distinct speeds of the two door panels 4a and 4b by being respectively driven by the linear motor 15. The linear motor 15 driving the door panels 4a and 4b is composed of a primary coil for a linear motor and a secondary magnetic conductor for a linear motor arranged to face to each other by being separated from each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a door device that opens and closes an entrance / exit of an elevator.

  A door device is provided at each of the elevator car and the elevator entrance. Generally, such a door device is composed of one or a plurality of door panels. A plurality of rollers are rotatably mounted on the upper portion of the door panel, and a hanger rail is installed horizontally above the entrance and exits, and the door panel is suspended vertically on the hanger rail via the roller. The doorway is opened and closed by moving along the hanger rail when driven by the driving device.

JP-A-3-264486 discloses that the door panel of such a door device is driven by a driving device using a linear motor.
Japanese Patent Laid-Open No. 3-264486

  However, as described above, a hanger rail is installed horizontally above the entrance, and a door panel is suspended on the hanger rail via a roller, and the door panel is moved along the hanger rail while rotating the roller. In the configuration that opens and closes the door panel, the door panel is heavy, so that a relatively large noise is generated when the roller moves along the hanger rail, impairing silence, and the contact between the roller and the hanger rail is dusty. Such foreign matter may adhere and accumulate, and the smoothness when the door panel moves may be impaired.

  The present invention has been made paying attention to such points, and an object thereof is to provide an elevator door device capable of operating a door panel quietly and smoothly without noise. .

  The invention of claim 1 is a door device that opens and closes an entrance / exit of an elevator, wherein the door panel is suspended in a vertically movable manner in balance with a weight, and the door panel opens and closes the entrance / exit by the up / down motion. And a linear motor driven up and down.

  The invention according to claim 2 is that there are a plurality of door panels, and the door panels of the elevators are closed by shifting the positions of the door panels in the front and rear and up and down directions, and each of the door panels is driven by a linear motor. The doorway is opened by moving upward at different speeds.

  The invention according to claim 3 is characterized in that the linear motor for driving the door panel is composed of a linear motor primary coil and a linear motor secondary magnetic conductor provided so as to be opposed to each other. It is said.

  According to this invention, the door panel that opens and closes the entrance / exit of the elevator can be operated quietly and smoothly without noise, and the quietness and smoothness of the door device can be enhanced.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows an external view of a car 1. The car 1 has an entrance 2 on the front surface, and a door device 3 is provided for the entrance 2. The door device 3 includes a pair of door panels 4a and 4b, and has a top-opening structure in which the door panels 4a and 4b move up and down to open and close the doorway 2.

  The door device 3 will be further described. Column members 6 extending in parallel in the vertical direction are attached to both side portions of the entrance 2 of the car 1. The upper portions of the column members 6 protrude upward from the upper end surface of the car 1.

  A pair of door panels 4 a and 4 b for opening and closing the entrance 2 of the car 1 are disposed between the column members 6. One door panel 4a is a high-speed door panel, and the other door panel 4b is a low-speed door panel. The high-speed door panel 4a and the low-speed door panel 4b are displaced in the front-rear direction and overlap each other according to the movement. Arranged as possible.

  A pair of pulleys 10a and 10b are rotatably attached to the upper end portion of each column member 6 corresponding to each door panel 4a and 4b. Each pulley 10a, 10b is wound with a chain 11a, 11b as a linear body, one end of the chain 11a wound around one pulley 10a is connected to a high-speed door panel 4a, and the other One end of the chain 11b wound around the pulley 10b is connected to a low-speed door panel 4b. Weights 12a and 12b are attached to the ends of the other ends of the chains 11a and 11b, respectively. The weights 12a and 12b and the door panels 4a and 4b are respectively balanced in weight, and the balance is maintained. The door panels 4a and 4b are suspended below the pulleys 10a and 10b.

  In normal times, the high-speed door panel 4a is arranged up and down and back and forth so that the low-speed door panel 4b is located almost in the lower half of the entrance 2 of the car 1, and the low-speed door panel 4b is located almost in the upper half. The doorway 2 is closed by the door panels 4a and 4b.

  A linear motor 15 is provided between the both sides of the door panels 4a and 4b and the inner side of each column member 6 as a drive device for driving the door panels 4a and 4b. As shown in FIG. 2, the linear motor 15 includes linear motor secondary magnetic conductors 16a and 16b made of permanent magnets corresponding to the door panels 4a and 4b, and the door panels 4a and 4b. It is comprised by the primary side coils 17a and 17b for linear motors provided in the side part of 4b.

The secondary side magnetic conductor 16a corresponding to the door panel 4a extends from the lowermost part of the column member 6 to the uppermost part, and the secondary side magnetic conductor 16b corresponding to the door panel 4b extends from the substantially middle part of the columnar member 6 to the uppermost part. The primary side coils 17a and 17b of the door panels 4a and 4b are arranged so as to face each other in close proximity to the corresponding secondary side magnetic conductors 16a and 16b. Proximity sensors 18a and 18b for detecting the positions of the door panels 4a and 4b are provided at required portions of the pillar members 6.
And the controller 20 which controls this linear motor 15 is installed in the upper part of the passenger car 1 as shown in FIG.

  In addition, it is preferable to provide a swing prevention means for preventing the swinging movement of the weights 12a and 12b and the door panels 4a and 4b suspended from the pulleys 10a and 10b via the chains 11a and 11b.

  Next, the operation will be described.

  3 shows a state when the door device 3 is opened and closed. FIG. 3A shows a state when the door is closed, and FIG. 3B shows a state when the door is opened. When the car 1 moves up and down, the doorway 2 is closed by door panels 4a and 4b as shown in FIG.

  In this state, when the car 1 reaches the destination floor and stops, the controller 20 is activated by a door opening command from a control panel (not shown), and the position information of the door panels 4a and 4b by the proximity sensors 18a and 18b is obtained. Based on this, the linear motor 15 is controlled by the controller 20, and the door panels 4a and 4b are driven to rise at a predetermined speed. That is, the magnetic poles of the primary side coils 17a, 17b of the linear motor 15 are controlled so as to change one after another, and a magnetic force is generated between the secondary side magnetic conductors 16a, 16b, and the door panels 4a, 4b are shown in FIG. Control is performed so as to move upward from the state of (A) and stop at a predetermined height position as shown in FIG. At this time, the high-speed door panel 4a is controlled to move at a speed approximately twice that of the low-speed door panel 4b. Due to this speed difference, the door panels 4a and 4b overlap each other and stop at substantially the same position at the same timing. To do. As the door panels 4a and 4b are lifted in this way, the entrance 2 of the car 1 is opened, and passengers can get on and off.

  When the passenger gets on and off, a door closing command is sent from the control panel to the controller 20, and based on this, the linear motor 15 is controlled via the controller 20 so that the door panels 4a and 4b operate in the direction opposite to that when the door is opened. Is done. That is, the door panels 4a and 4b are controlled to move downward. Also at this time, the high-speed door panel 4a moves at a speed almost twice that of the low-speed door panel 4b. Therefore, the high-speed door panel 4a is positioned at the lower half of the entrance 2 and the low-speed door panel 4b is The position of the upper half of the entrance / exit 2 is stopped at the same timing, and the entrance / exit 2 is covered and closed by the door panels 4a and 4b.

  The door panels 4a and 4b that operate in this manner are suspended so as to balance the weights 12a and 12b via the chains 11a and 11b wound around the pulleys 10a and 10b, and are moved up and down by the linear motor 15 in this balanced state. To be driven.

  Conventionally, since a heavy door panel moves along the hanger rail via a roller, the contact sound resonates as a loud noise around it, and foreign matter such as dust adheres to the contact portion between the roller and the hanger rail. However, in this embodiment, since the heavy door panels 4a and 4b are driven in a state where they are balanced in weight with the weights 12a and 12b, they are smooth and light. Therefore, it can be driven quietly and does not move along the hanger rail, so that smoothness is not impaired by the adhesion of foreign matters such as dust.

  In the above-described embodiment, the doorway of the car is opened and closed using a pair of door panels. However, the structure is opened and closed using one door panel, or the structure is opened and closed using two or more door panels. It may be the case. However, in either case, the door panel is supported so as to balance the weight and is driven by a linear motor.

  Moreover, in the said embodiment, although it was set as the door apparatus which opens and closes the entrance / exit of a passenger car, it is applicable similarly also in the door apparatus which opens / closes the entrance / exit of the elevator platform of each floor of a building.

The perspective view which shows the elevator car provided with the door apparatus which concerns on one Embodiment of this invention. Explanatory drawing which shows the structure of the linear motor which drives the door apparatus. The front view which shows the opening / closing operation state of the door apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Car 2 ... Entrance / exit 3 ... Door apparatus 4a. 4b ... Door panel 6 ... Column member 10a. 10b ... pulley 11a. 11b ... chain 12a. 12b ... Weight 15 ... Linear motor 16a. 16b ... Secondary side magnetic conductor for linear motor 17a. 17b ... Primary coil for linear motor 18a. 18b ... proximity sensor 20 ... controller

Claims (3)

A door device that opens and closes an elevator doorway,
A door panel that balances with the weight in weight and is suspended so as to be movable up and down, and opens and closes the doorway by the vertical movement;
A linear motor for driving the door panel up and down;
An elevator door device comprising:   There are multiple door panels. The multiple door panels are arranged with their positions shifted back and forth and up and down to close the elevator door, and the multiple door panels move upward at different speeds driven by linear motors. The door device for an elevator according to claim 1, wherein the doorway is opened.   The linear motor for driving the door panel is composed of a primary coil for linear motor and a secondary magnetic conductor for linear motor which are provided so as to face each other while being separated from each other. The elevator door device described in 1.

Images