OPENING AND CLOSING APPARATUS AND IMAGE FORMING APPARATUS

摘要

There is provided an opening and closing apparatus, including: a main body; an openable body pivoting between a closed position and an open position; a connecting part connecting an end of the main body and an end of the openable body; a rack provided in one of the main body and the openable body; and an arm, wherein a part, of a pitch line of the rack, which makes contact with a pitch circle of the pinion in a state that the openable body is positioned in the vicinity of the closed position is an inclined line which is inclined to approach the other of the main body and the openable body having no rack, as the inclined line is farther away from the connecting part with the openable body being in the closed position.

主权项

1. An opening and closing apparatus, comprising:
a main body; an openable body configured to pivot between a closed position in which the openable body covers an upper part of the main body and an open position in which the upper part of the main body is open; a connecting part connecting an end of the main body and an end of the openable body such that the openable body pivots about a pivot axis; a rack provided in one of the main body and the openable body and extending in a direction orthogonal to the pivot axis; and an arm having a first end provided with a pinion engaging with the rack, a second end connected to the other one of the main body and the openable body such that the arm pivots about the second end, and a braking unit configured to apply braking force to the pinion, wherein a part, of a pitch line of the rack, which makes contact with a pitch circle of the pinion in a state that the openable body is positioned in a vicinity of the closed position is an inclined line which is inclined to approach the other one of the main body and the openable body having no rack, as the inclined line is farther away from the connecting part with the openable body being in the closed position.