JP2012166871A - Elevator door opening and closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator door opening and closing device capable of opening and closing optionally and quickly an elevator door manually irrespective of a motor operation.SOLUTION: A door panel 12 is provided openably and closably onto an elevator car 11, the other end of a door link 28 with one end pivoted turnably on a car 11 side is connected to the door panel 12, and the door panel 12 is opened and closed by turning around a pivotal support part 30 as a fulcrum. A lengthwise intermediate part of the door link 28 is connected to an end part of a rod 25 via a connecting device 29. One end of the rod 25 is connected in a position coming off from the rotation center of a pulley 22 rotationally-driven by a driving motor, and the rod 25 is advanced and retracted by the rotation of the pulley 22, to turn the door link 28 around a pivotal point 30 as a fulcrum. The connecting device 29 includes an electromagnetic mechanism, and releases coupling between the end part of the rod 25 and the door link 28, by interruption of energization.

Description

  Embodiments of the present invention relate to an elevator door opening and closing device for opening and closing a door panel that can be opened and closed on an open surface of an elevator car.

  On the open surface of the elevator car, a door panel constituting the elevator door is provided so as to be openable and closable. This door panel is opened and closed by a door opening and closing device having a drive motor. This door opening / closing device converts the rotational movement of a pulley that is rotationally driven by a drive motor into a forward / backward movement of a rod, and the forward / backward movement of the rod causes a door link that is pivotally supported at one end to the pivot part. Is used as a fulcrum, and the door panel connected to the other end of the door link is opened and closed.

  As described above, the door panel provided in the elevator car is opened and closed by the rotational force of the drive motor, so that a reliable opening and closing operation can be normally performed. However, when a disaster such as a fire occurs, a special opening / closing operation is required, such as an urgent need for the opening / closing operation itself. For this reason, it is desirable not only to depend on the operating force of the drive motor, but also to respond quickly to special operation requests.

  Regarding the opening and closing of the elevator door in the event of a fire, there is a proposal that enables an opening and closing operation suitable for a fire (for example, see Patent Document 1).

JP-A-8-2861

  However, in the above conventional example, the control circuit controls the opening and closing of the elevator door suitable for a fire, and in addition to the normal opening and closing control, a special circuit configuration for fire must be added. Is complicated.

  The problem to be solved by the present invention is to provide an elevator door opening / closing device which can be opened and closed quickly and arbitrarily manually.

  An elevator door opening and closing device according to an embodiment of the present invention includes a door panel that can be opened and closed on an opening surface of an elevator car, and one end pivotally supported to the car side, the other end being the door panel. And a door link that opens and closes the door panel by pivoting about the one end, and one end is connected to a position off the rotation center of a pulley that is rotated by a drive motor, and the other end is the door link. A rod which is connected to a middle portion in the longitudinal direction via a connecting device and rotates the door link with one end thereof as a fulcrum by rotation of the pulley, and the length of the other end of the rod and the length of the door link. The coupling device with the direction intermediate portion has an electromagnetic mechanism that integrally couples the coupling portions by energization and releases the coupling by de-energization.

  According to the elevator door opening and closing device having the above configuration, the motor drive system for opening and closing the door panel can be mechanically separated, so that the elevator door can be opened and closed quickly and arbitrarily by human power, which is suitable for disasters such as fires. Operation can be realized.

It is an elevator door opening / closing apparatus principal part block diagram which concerns on one embodiment of this invention. It is a figure which shows the structure of the connection apparatus in one embodiment of this invention. It is a figure which shows the structure of the conventional connection device.

  Hereinafter, an elevator door opening and closing apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows the overall configuration of this embodiment, and shows a center open type door opening / closing device provided in an elevator car. This door opening and closing device has two door panels 12 provided on an open surface of an elevator car 11 (not shown in detail) so as to be opened and closed. These door panels 12 are suspended and supported by a door rail 13 provided along the width direction on the upper surface of the open surface of the car 11 so as to be movable via a hanger roller 14. Since this elevator door is of the center open system as described above, the two door panels 12 in the closed state shown in the figure are opened and closed in the horizontal direction shown in the drawing in conjunction with each other by an interlocking mechanism (not shown). These two door panels 12 are driven to open and close in the left-right direction in the figure as described above by a door machine unit 16 formed at the top of the car 11.

  The door machine unit 16 has a drive motor (not shown), and the first small pulley 17 directly connected to the rotation shaft of the drive motor is connected to the first large pulley 19 by an endless connecting body 18. . The second small pulley 20 directly connected to the rotation shaft of the first large pulley 19 is connected to the second large pulley 22 by the endless connecting body 21. Therefore, the second large pulley 22 is decelerated and driven to rotate as the drive motor rotates.

  One end of a rod 25 is connected to the second large pulley 22, that is, a pulley driven to rotate by a drive motor, at a position deviated from the center of rotation via a connector 26. Further, the other end of the rod 25 is connected to a middle portion in the length direction of a door link 28 described later via a connecting device 29. The door link 28 is pivotally supported by a structural member of the door machine unit 16 whose one end (the upper end in the figure) is on the car 11 side, and the other end pivots in an arc shape with the pivot 30 as a fulcrum. It is configured to be operable. The other end of the door link 28 is connected to one door panel 12 via a connecting portion 31, and the door link 28 opens and closes the two door panels 12 in the left-right direction in the figure by the above-described rotation operation. Let

  Since the two door panels 12 are the center open type as described above, the other door panel 12 is driven symmetrically by driving one (left side in the figure) door panel 12 by an interlocking mechanism (not shown). It is configured. One door panel 12 is provided with an interlocking member 32 commonly called a razor because of its shape. The interlocking member 32 is engaged with a holder side (not shown) of each floor, and opens and closes the holder in conjunction with the opening / closing operation of the door panel 12 on the car 11 side. Further, a door safety 33 is provided at the joint side portion of the door panel 12. The door safety 33 detects a passenger or the like when the passenger side is sandwiched between the joint sides of the door panel 12 that has been closed, operates the door safety switch 34, and reverses the door in the opening direction.

  In the above configuration, the opening and closing of the elevator door during normal operation is driven by a drive motor (not shown). That is, the drive motor rotates, and the rotation is transmitted from the first small pulley 20 to the second large pulley 22 while being sequentially decelerated through the first large pulley 19 and the second small pulley 20. The rotation of the pulley 22 is converted into a forward / backward movement of a rod 25 having one end connected to the pulley 22. Since the other end of the rod 25 is connected to the intermediate portion in the longitudinal direction of the door link 29 by the connecting device 29, the forward / backward movement of the rod 25 is converted into a rotation operation around the fulcrum 30 of the door link 29, The door panel 12 connected to the front end of the door link 29 is translated in the horizontal direction in the figure to open and close the center open type elevator door.

  As described above, in a normal state, the pulley 22 is rotated by the drive motor provided in the door machine unit 16, and the door panel 12 can be reliably opened and closed at a constant speed via the rod 22 and the door link 28.

  However, when an elevator is evacuated when a disaster such as a fire occurs, it is necessary to open and close the elevator door in as short a time as possible during rescue on each floor. Also, depending on the situation of the hall, for example, when the door has been opened because the fire is already around, but it is dangerous, the door in the middle of the opening operation must be closed immediately, or vice versa, A special opening / closing operation may be required, for example, when the door during the closing operation is suddenly reversed in the opening direction.

  Even in such a case, since the door panel 12 is connected to the drive motor via the door link 28, the rod 25, and the pulleys 22, 20, 19, and 17, the opening and closing speed of the door panel 12 is always constant. The rapid opening / closing operation could not be performed. In particular, an abrupt reversal operation from open to closed or from closed to open has been substantially difficult.

  Therefore, in this embodiment, the connecting device 29 provided at the connecting portion between the other end of the rod 25 and the intermediate portion in the longitudinal direction of the door link 28 has a structure that can arbitrarily release the connecting state. As shown in FIG. 3, the connecting device 29 so far has integrally fastened and fixed the other end of the rod 25 with a nut or the like, so that this connecting portion is always in a coupled state. Therefore, in this embodiment, the electromagnetic mechanism is used to integrally couple by energization during normal times, and this coupling is released by de-energization when a disaster occurs.

  The configuration of the coupling device 29 having this electromagnetic mechanism will be described with reference to FIG. In FIG. 2, the end of the rod 25 is inserted into a cylindrical guide 36 so as to be able to advance and retract. The side surface of the cylindrical guide 36 is integrally attached to the bracket 37. In addition, an electromagnetic mechanism including an iron core 39 around which an electromagnetic coil 38 is wound is provided in the guide 36. In this electromagnetic mechanism, the switch 25 is turned on and energized from the power source 41 to the electromagnetic coil 38, and the rod 25 is attracted and held in the guide 36 and integrally coupled. On the other hand, the switch 40 is turned off to cut off the energization from the power source 41, thereby releasing the coupling with the rod 25 and allowing it to freely advance and retreat.

  Here, an elevator may be used for evacuation when a disaster such as a fire occurs. In such a case, for example, when an evacuation guide such as a firefighter gets on the car 11 and reaches the floor to be evacuated, the door is opened and the person to be evacuated is accommodated in the car 11. At this time, the opening / closing operation of the elevator door is preferably as fast as possible. However, since normal door opening is an operation at a constant speed by the drive motor as described above, in order to speed up the door opening operation, the switch 40 shown in FIG. Turn off the power. By this operation, the other end of the rod 25 that is attracted and held by the iron core 39 of the electromagnetic mechanism in the cylindrical guide 36 can advance and retreat in the guide 36. For this reason, the bracket 37 connected to the other end of the rod 25 is freed from the connection with the drive motor side, and the door link 28 and the door panel 12 connected to the bracket 37 can be quickly and arbitrarily set manually. Can be opened and closed.

  In this way, by releasing the door link 28 and the door panel 12 connected to the drive motor side via the bracket 37 from the drive motor side, according to the situation by manual operation instead of opening and closing at a constant speed by the drive motor. The door panel 12 can be opened and closed at a high speed. In particular, it is possible to quickly and arbitrarily handle a door that is in the middle of an opening operation that is suddenly reversed in the closing direction, or vice versa. be able to.

  Here, since the guide 36 into which the rod 25 is inserted is formed in a cylindrical shape, the other end portion of the rod 25 is cylindrical even when the energization to the electromagnetic coil 38 is cut off and the coupling with the rod 25 is released. Therefore, the electromagnetic coupling again becomes easy. That is, in order to keep the rod 25 within the range where the electromagnetic force of the electromagnetic coil 38 is effective, when the switch 40 is turned on and the electromagnetic coil 38 is energized, the rod 25 is immediately attracted to the iron core 39 of the electromagnetic mechanism, and is connected. It becomes. It should be noted that stoppers may be provided at both ends of the guide 36 so that the rod 25 does not come off the guide 36 within the range of full opening to full closing of the door by manual operation.

  The switch 40 may be provided inside or outside the car 11 or outside the car 11, and may be incorporated into a predetermined control sequence. In any case, the elevator door can be opened and closed arbitrarily and quickly by turning off the switch 40. Further, the switch 40 may be configured to be operable by using a key managed by a specified person.

  As described above, in this embodiment, the door can be manually opened and closed by the switch or the sequence control. If manual operation becomes possible, quick reversal operation becomes possible, so that the time required for opening and closing the door can be shortened. In addition, the door can be easily opened and closed when it becomes confined due to a failure of the electrical control system.

  In addition, although the center open type door was demonstrated in the said embodiment, it is applicable by the same structure also to a side open type door.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 11 ... Car 12 ... Door panel 22 ... Pulley 25 ... Rod 28 ... Door link 29 ... Connecting device 30 ... Pivoting part 36 ... Cylindrical guide 38 ... -Electromagnetic coil of electromagnetic mechanism 39 ... Iron core of electromagnetic mechanism 40 ... Switch

Claims (4)

A door panel that can be opened and closed on the open side of the elevator car;
One end is pivotally supported on the car side, the other end is connected to the door panel, and a door link that opens and closes the door panel by turning about the one end, and
One end is connected to a position deviated from the rotation center of the pulley that is rotationally driven by the drive motor, and the other end is connected to a middle portion in the longitudinal direction of the door link via a connecting device. And a rod that rotates around one end of the
The connecting device between the other end of the rod and the intermediate portion in the longitudinal direction of the door link has an electromagnetic mechanism that integrally connects the connecting portions by energization and releases the coupling by de-energizing. Elevator door opening and closing device.   The elevator door opening and closing device according to claim 1, wherein the coupling device includes a cylindrical guide into which the other end of the rod is inserted, and the electromagnetic mechanism includes an electromagnetic coil and an iron core.   The elevator door opening and closing device according to claim 1, wherein the power supply to the electromagnetic mechanism can be turned off by a switch provided in either or both of the car and the car.   The elevator door opening / closing device according to claim 3, wherein the switch is configured to be operable by using a key managed by a person specified in advance.

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