Apparatus for coupling elevator doors

Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support – Including barrier mounted at landing

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49120, B66B 1312

Patent

active

058969527

ABSTRACT:
A door coupling apparatus for establishing and releasing an operative connection between an elevator car door and an elevator shaft door includes a drive unit (D, P) mounted on the car door for moving a roller double lever (1) into engagement with an entraining element (21) on the shaft door. A thrust/rotation drive unit (D) has a rotary drive (9) coupled to a lever axle (3) of the roller double lever (1) by an entraining disc (8), a coupling pin (7) and a coupling ring (6) to axially displace the roller double lever, and a guide pin (11) extending from the lever axle to engage a curved guide slot (10) to rotate the roller double lever. A passive drive unit (P) has an actuating cam (32) with a guide slot (36) formed therein for engaging an actuating roller (37) attached to the coupling pin (7) to produce the rotation and extension of the roller double lever (1). The rotatable and, in particular, retractable roller double lever (1) and the arrangement thereof above the door leaves (16.1, 16.2) provides for a very small threshold gap (35).

REFERENCES:
patent: 2077659 (1937-04-01), Bancroft
patent: 2432293 (1947-12-01), Giovanni
patent: 2996152 (1961-08-01), Olexson et al.
patent: 5105916 (1992-04-01), Steacy et al.
patent: 5485896 (1996-01-01), Kowalczyk et al.
patent: 5651428 (1997-07-01), Ahigian et al.

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