TWO-STEP TELESCOPIC HOME DOOR DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a two-step telescopic home door device capable of executing a two-step telescopic operation of a movable part with a driving mechanism having a simple structure safely and surely.SOLUTION: A door part 30 is two-step telescopic, and a second step door 32 is accommodated in a first step door 31 by sliding. A driving mechanism 40 is configured by including: a first step door driving part 41 including a ball screw mechanism 44 which rotates by an electric motor 42, and a slider 45 which is fixed at the first step door 31 and which is screwed with a ball screw of the ball screw mechanism 44; and a second step door driving part 50 including a rack and pinion mechanism 53 in which a pinion gear 52 mounted on the first step door 31 is engaged with a rack gear 51, a timing belt mechanism 57 which includes a driving side sheave 54 coaxial with the pinion gear 52, and a connection fixing member 58 which is fixed at the second step door 32 and a timing belt 56 of the timing belt mechanism 57 and which connects both of them.