Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support – Includes motor or motor driven linkage for shifting barrier
Patent
1998-04-17
1999-11-23
Noland, Kenneth W.
Elevator, industrial lift truck, or stationary lift for vehicle
With barrier for regulating access to load support
Includes motor or motor driven linkage for shifting barrier
187330, B66B 1312
Patent
active
059883200
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an arrangement in the opening and closing of elevator doors as defined in the preamble of claim 1 and to a door coupler as defined in the preamble of claim 5.
In elevators provided with automatic doors, the coupling between the car door and the landing door is generally implemented using a door coupler which is mounted on the car door and engages counterparts mounted on the landing door by means of its gripping elements. The door coupler and the counterparts are so fitted relative to each other that, when the elevator car is moving past the landing door, the counterparts on the landing door are passed between the gripping elements of the door coupler. When the car is at a landing and the car doors are moved, the door coupler is in engagement with the counterparts. In this way, the landing door moves together with the car door when the latter is moved by a power means connected to the car door. Often the gripping elements are metal vanes projecting from the door coupler towards the landing door and forming a kind of a vertical slot which is open towards the landing door. The counterparts used often consist of rollers mounted on the landing door and projecting from the door towards the elevator shaft, the axle of the rollers being mounted in a position perpendicular to the plane of the door.
When an elevator car stops at a landing, usually the elevator car and the landing devices are not exactly aligned with each other, but either the location or position, or both, of the elevator car differs at least somewhat from the ideal location or position with respect to the equipment at the landing. For this reason, there are problems with the coupling between the car door and landing door, because inadequate alignment between the door coupler and the counterparts may lead to a host of various problems. If the door coupler is not properly aligned with the rollers on the landing door, this may result in noise, reliability problems, interruption of door operation, obstruction of emergency opening of the door, incomplete opening or closing movement of the door, etc.
In order to overcome the aforesaid problems relating to the opening and closing of elevator doors and the coupling between the car door and landing door, an arrangement in the opening and closing of automatic elevator doors and a door coupler are presented as an invention. The arrangement of the invention is characterized by what is presented in the characterization part of claim 1. The door coupler of the invention is characterized by what is presented in the other claims.
The advantages provided by the invention include the following: door and complete closing of the doors even if the doors are not aligned with each other. noise, interruption of door operation, the doors getting stuck, etc. are avoided. closed, this does not stop the closing movement of the other door which may not yet have been closed. hindering each other even if one of them should reach the extremity its opening or closing movement before the other one has reached its extreme position. door coupler vanes for the rollers on the landing door, so the car door and the landing door need not be very accurately aligned with each other.
In the following, the invention is described by the aid of a few examples of its preferred embodiments by referring to the attached drawings, in which
FIG. 1 presents a car door and a landing door applying the invention, together with the supporting beam, seen from the direction of the end of the beam,
FIG. 2 presents a car door applying the invention, together with its supporting beam, as seen from the direction of the landing,
FIG. 3 presents a door coupler as provided by the invention,
FIG. 4 presents the supporting beam system of another car door applying the invention as seen from the direction of the landing,
FIGS. 5-7 present another door coupler as provided by the invention, depicted at different stages of the closing movement of the door.
FIGS. 1 and 2 present the overhead supporting beam of a car door applying the inven
REFERENCES:
patent: 1876438 (1932-09-01), Werner
Kone Corporation
Noland Kenneth W.
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