Opening-closing mechanism and opening-closing device using same
First Claim
1. An opening-closing mechanism for rotating a door member between a closed position for closing an opening portion of a box-shape base member and an open position for opening the opening portion, comprising:
- a first fixed internal gear portion to be disposed on the box-shape base member, a second fixed gear portion to be disposed on the box-shape base member and located inside the first fixed internal gear portion, and a pair of arm portions to be fixed to the door member, each of said arm portions having a circular arc shape gear portion engaging the first fixed internal gear portion, and a rotary gear disposed at a center of the circular arc shape gear portion and engaging the second fixed gear portion, said pair of the arm portions being supported to be vertically movable through the engagements between the first fixed internal gear portion and the circular arc gear portion and between the second fixed gear portion and the rotary gear to allow the door member to be moved through the pair of the arm portions along a path corresponding to the first fixed internal gear portion.
1 Assignment
0 Petitions
Accused Products
Abstract
In an opening-closing mechanism of a door member for shifting the door member from a closed position for closing an opening portion of a base member to an open position and vice versa, the door member includes a pair of arm portions. Each arm portion includes a circular arc shape gear and a rotary gear disposed in a center of the circular arc of the gear. The base member includes a first fixed gear portion with internal teeth engaging the circular arc shape gear portion, and a second fixed gear portion disposed inside the first fixed gear engaging the rotary gear. The arm portion is held to move vertically through engagements between the first fixed gear portion and the circular arc shape gear portion and between the rotary gear and the second fixed gear portion, so that the door member is shifted along a path corresponding to the first fixed gear portion.
119 Citations
10 Claims
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1. An opening-closing mechanism for rotating a door member between a closed position for closing an opening portion of a box-shape base member and an open position for opening the opening portion, comprising:
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a first fixed internal gear portion to be disposed on the box-shape base member, a second fixed gear portion to be disposed on the box-shape base member and located inside the first fixed internal gear portion, and a pair of arm portions to be fixed to the door member, each of said arm portions having a circular arc shape gear portion engaging the first fixed internal gear portion, and a rotary gear disposed at a center of the circular arc shape gear portion and engaging the second fixed gear portion, said pair of the arm portions being supported to be vertically movable through the engagements between the first fixed internal gear portion and the circular arc gear portion and between the second fixed gear portion and the rotary gear to allow the door member to be moved through the pair of the arm portions along a path corresponding to the first fixed internal gear portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A box with an opening-closing mechanism, comprising:
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a box-shaped base member having an opening portion and sidewalls, and a door member rotatably attached to the box-shaped base member to move between a closed position for closing the opening portion and an open position for opening the opening portion, at least one first fixed internal gear portion disposed on one of the sidewalls of the box-shape base member, at least one second fixed gear portion disposed on the sidewall inside the first fixed internal gear portion, and a pair of arm portions fixed to the door member, at least one of said arm portions having a circular arc shape gear portion engaging the first fixed internal gear portion, and a rotary gear disposed at a center of the circular arc shape gear portion and engaging the second fixed gear portion, said at least one of the arm portions being supported to be vertically movable through the engagements between the first fixed internal gear portion and the circular arc gear portion and between the second fixed gear portion and the rotary gear to allow the door member to be moved through the pair of the arm portions along a path corresponding to the first fixed internal gear portion. - View Dependent Claims (9, 10)
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Specification