Door operating mechanism and unit
AssigneeNifco Inc.
InventorMichihiro Fukuo
Life of this patent
Estimating the term…
Abstract
A door operating mechanism is provided for rotatably switching a door relative to a base between a closed position and an open position. A sector gear is disposed in a support arm projected from the door. A rotary gear is disposed substantially in the center of the arc of the sector gear. A first gear of the base has internal teeth disposed to engage the sector gear. A second gear of the base is resiliently and displaceably disposed to engage the rotary gear. The door is rotatably disposed along a track corresponding to the first gear via engagements between the first gear and the sector gear, and engagements between the second gear and the rotary gear. A load received by the door in the closed position towards the bottom of the base is absorbed by resilient displacement of the second gear.
Claims7
A door operating mechanism, comprising:
- a door having a support arm projecting from the door, said support arm having a sector gear, and a rotary gear disposed substantially in a center of the sector gear,
- a base for rotatably supporting the door to open between a closed position and an open position, said base including a first gear having internal teeth disposed to engage said sector gear,
- a gear cover attached to the base and having an opening therein, and
- a movable part including a body via a shaft situated in the opening to be slidable relative to the gear cover, a second gear fixed to the body, and a resilient section attached to the body to resiliently and displaceably hold the body relative to the gear cover, said second gear engaging said rotary gear so that when a load is applied to the door in the closed position towards a bottom of the base, the load applied to the rotary gear and second gear is absorbed by resilient displacement of said body holding the second gear.
Dependencies are inferred from the claim text.