To avoid that a pressing force for energizing a clutch mechanism to a non-connection side becomes smaller than its resistance over the whole period during the changeover of the clutch mechanism to the non-connection state from a connection state, in a seat drive unit for adjusting positions of a plurality of seat movable parts by using a single motor, and to suppress a possibility that a malfunction causing a failure of an operation of the clutch mechanism during the changeover of the clutch mechanism may occur when switching the clutch mechanism to the non-connection state from the connection state.SOLUTION: A clutch pin comprises a protrusion 51 Lb, and an operation member 46 La comprises an inclined face 46 Ld constituting a cam mechanism between the protrusion 51 Lb and itself. The inclined face 46 Ld is formed so that a route from a movement start position (skirt 46 Lc) at the movement of the protrusion 51 Lb of the clutch pin accompanied by the changeover of the clutch mechanism to a non-connection state from a connection state by releasing an operation of an operation knob up to a movement completion position (apex 46 Lb) becomes linear.SELECTED DRAWING: Figure 19
【課題】単一のモータにより複数のシート可動部の位置を調整するシート駆動装置において、クラッチ機構を接続状態から非接続状態への切換中の全期間に渡って、クラッチ機構を非接続側へ付勢する押圧力がその抗力よりも小さくならないようにする。それにより、クラッチ機構を接続状態から非接続状態へ切り換えるとき、その途中でクラッチ機構が作動しなくなる不具合が生じる可能性を抑制する。【解決手段】クラッチピンは突部51Lbを備え、操作部材46Laは突部51Lbとの間でカム機構を成す傾斜面46Ldを備える。傾斜面46Ldは、操作ノブの操作を解除してクラッチ機構を接続状態から非接続状態へ切り換えるのに伴うクラッチピンの突部51Lbの移動時における移動開始位置(裾46Lc)から移動完了位置(頂上46Lb)までの経路が直線となるように形成されている。【選択図】図19
SEAT DRIVE UNIT
シート駆動装置
06.12.2018
Patent
Elektronische Ressource
Japanisch
IPC: | B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet |