To provide a reclining device configured so that a wedge-shaped cam contacts a cylindrical boss in accordance with a direction of external force applied to the reclining device, with respect to the external force, which can stabilize sliding.SOLUTION: A reclining device 100 according to the present invention comprises: an external tooth gear 10; an internal tooth gear 20; a rotary shaft 30 that is concentrically and rotatably fitted and inserted through a cylindrical boss 22 of the internal tooth gear 20 and has an extended pressing part extended to the vicinity of the cylindrical boss 22; a pair of wedge-shaped cams 50; and an elastic body 60 that energizes the pair of wedge-shaped cams 50 in direction in which the cams separate from each other. The wedge-shaped cam 50 is provided with a distant-side end part at an elastic body 60-based energizing direction side up to a position on the energizing direction side of a perpendicular line at a center of the cylindrical boss 22 with respect to an eccentric direction of the internal tooth gear 20 and the external tooth gear 10, and has a cam contact point that contacts an outer peripheral surface of the cylindrical boss 22, at the position.SELECTED DRAWING: Figure 3
【課題】リクライニング装置に加わる外力に対して、加わる外力の方向に応じてくさび状カムが円筒ボスと接することによって、摺動を安定化させることができるリクライニング装置を提供する。【解決手段】本発明のリクライニング装置100は外歯歯車10と、内歯歯車20と、内歯歯車20の円筒ボス22に同軸かつ回転自在に嵌挿され、円筒ボス22近傍に延設された押圧延設部を有する回転シャフト30と、一対のくさび状カム50と、一対のくさび状カム50をそれぞれ離間する方向に付勢する弾性体60と、を備えてなり、くさび状カム50は、弾性体60による付勢方向側の遠位側端部が内歯歯車20と外歯歯車10の偏心方向に対する円筒ボス22の中心における垂線よりも付勢方向側の位置にまで設けられており、かつその位置において円筒ボス22の外周面と接するカム接点を有することを特徴とする。【選択図】図3
RECLINING DEVICE
リクライニング装置
2023-01-18
Patent
Electronic Resource
Japanese