Opening/closing apparatus and image recording apparatus

摘要

An opening/closing apparatus includes: an apparatus body; a pivot body pivotable between a close position covering an upper portion of the apparatus body and an open position releasing the upper portion of the apparatus body; a rack member provided on the pivot body and having a rack gear extending in a radial direction from a pivot base end portion to a pivot front-end portion of the pivot body; and an arm body having one end portion connected to the apparatus body and the other end portion connected to the rack member and slidably movable relative to the rack member. The arm body includes: a housing; a rotary damper supported by the housing and having a damping gear receiving damping force from viscous fluid; and a gear section supported by the housing and transmitting the damping force of the damping gear to the rack gear.

主权项

1. An opening/closing apparatus comprising:
an apparatus body; a pivot body provided with a pivot base end portion including a pivot center around which the pivot body pivots relative to the apparatus body, and a pivot front-end portion of which pivot motion amount is greatest in a case that the pivot body pivots relative to the apparatus body, the pivot body being pivotable relative to the apparatus body between a close position at which an upper portion of the apparatus body is covered by the pivot body and an open position at which the upper portion of the apparatus body is released; a rack member provided on the pivot body and having a rack gear extending in a radial direction from the pivot base end portion to the pivot front-end portion; and an arm body having one end portion connected to the apparatus body and the other end portion connected to the rack member and configured to slide relative to the rack member, wherein the arm body includes: a housing; a rotary damper supported by the housing and having a damping gear configured to receive damping force from viscous fluid; and a gear section supported by the housing and configured to transmit the damping force of the damping gear to the rack gear, wherein the gear section includes a transmission switching section configured to release transmission of the damping force from the damping gear to the rack gear under a condition that the pivot body pivots from the close position toward the open position, and to transmit the damping force from the damping gear to the rack gear under a condition that the pivot body pivots from the open position toward the close position.