WHEEL FOR GATE DOOR

PROBLEM TO BE SOLVED: To provide a wheel for a gate door, which is not deformed even if the gate door is not moved for a long time. SOLUTION: The wheel for the gate door comprises a rubber wheel section 10 and a stainless wheel section 20, and the rubber wheel section 10 and the stainless wheel section 20 have a substantially same diameter and are joined together using the same center axes. The stainless wheel section 20 can bear the weight of an electric moving column, preventing the rubber wheel section 10 from being deformed under the weight of the electric moving column without moving the gate door for a long time. Accordingly, there is no fear of non-smooth opening/closing of the gate door nor of noises caused by the vibration of the gate door. The rubber wheel section 10 is formed of rubber to have a high degree of friction, hardly causing the guide rail and the wheels to slip when they get wet in rain, so as to reliably open/close the gate door. COPYRIGHT: (C)2010,JPO&INPIT