Elevator door control device

Patent metadata

Field	Value
Publication number	US-9758351-B2
Application number	US-201314766921-A
Country	US
Kind code	B2
Filing date	Mar 12, 2013
Priority date	Mar 12, 2013
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

An elevator door control device includes: a car door panel and a hall door panel that open/close, respectively; a motor that drives the car door panel to open/close; jointing means for mechanically jointing the car door panel and the hall door panel to each other so that the panels open/close in an integrated manner; a closer device that provides a self-closing force in a door close direction to the hall door panel, and controller controlling the motor. The controller includes a torque detection unit that detects a torque of the motor in at least one of door closing and door opening of the panels when the panels are jointed to each other, and a diagnosis unit determines whether or not the hall door panel can self-close via the self-closing force when the panels are not jointed to each other, based on the torque detected by the torque detection unit.

First claim

The invention claimed is:

1. An elevator door control device comprising:
a car door panel configured to open/close an entrance of a car;
a hall door panel configured to open/close an entrance of a hall;
a motor configured to drive the car door panel to open/close;
a jointing device configured to mechanically joint the car door panel and the hall door panel to each other so that the panels open/close in an integrated manner;
a closer configured to provide a self-closing force in a door close direction to the hall door panel; and
a controller configured to control the motor,
wherein the controller includes:
a torque detector configured to detect a torque of the motor in each of door opening and door closing of the panels when the panels are jointed to each other; and
a diagnosis unit configured to determine whether or not the hall door panel is self-closable via the self-closing force when the panels are not jointed to each other, based on the torque detected by the torque detector,
wherein the diagnosis unit adds up the torque in the door opening and the torque in the door closing, the torques being detected by the torque detector, to calculate a running loss for the panels, and based on the calculated running loss, determines whether or not the hall door panel is self-closable via the self-closing force when the panels are not jointed to each other.

2. The elevator door control device according to claim 1 ,
wherein the controller makes the panels open and close so as to make magnitudes of an acceleration and a deceleration of the panels be equal to or below a predetermined value in a self-diagnostic mode for making diagnosis of whether or not the hall door panel is self-closable; and
wherein the torque detector detects the torque of the motor in each of the door opening and door closing of the panels in the self-diagnostic mode.

3. The elevator door control device according to claim 1 ,
wherein the torque detector detects the torque of the motor in each of door closing and door opening of the panels for each of a plurality of floors; and
wherein the diagnosis unit calculates a running loss for the hall door panel based on the torques detected by the torque detector for the plurality of floors, and based on the calculated running loss, determines whether or not the hall door panel is self-closable via the self-closing force when the panels are not jointed to each other.

4. The elevator door control device according to claim 1 ,
wherein the controller further includes a storage unit that stores a history of a torque detected by the torque detector; and
wherein the diagnosis unit determines whether or not the hall door panel is self-closable via the self-closing force when the panels are not jointed to each other, based on the history of the torque stored in the storage unit.

5. The elevator door control device according to claim 1 ,
wherein the torque detector detects the torque of the motor in each of door closing and door opening of the panels for each of a plurality of floors, and
wherein the diagnosis unit determines whether or not the hall door panel is self-closable via the self-closing force when the panels are not jointed to each other, for each of a plurality of diagnosis regions obtained by dividing a range from a full-open position to a full-close position of the panels, based on the torques detected by the torque detector for the plurality of floors.

6. The elevator door control device according to claim 1 , further comprising means for, if the diagnosis unit determines that the hall door panel is not self-closable, signaling and/or displaying the effect.

Assignees

• Koketsu Masahiko
• Mitsubishi Electric Corp

Inventors

• Koketsu Masahiko

Classifications

• B66B13/146

  method or algorithm for controlling doors · CPC title

• B66B13/143 Primary

  electrical · CPC title

• B66B13/12

  Arrangements for effecting simultaneous opening or closing of cage and landing doors · CPC title