PROBLEM TO BE SOLVED: To surely and properly perform the motion of a parking lock even at the occurrence of trouble such as a failure of a power source, in a parking lock mechanism of a shift-by-wire type.SOLUTION: A parking lock mechanism has: a parking gear (24) which is arranged on a rotating shaft (54A) for transmitting drive forces to drive wheels (W) of a vehicle (50); an engagement member (26) which can bring about an engagement state (P) engaged with the parking gear (24), and a non-engagement state (notP) separating from the parking gear (24); an energization member (27) which energizes the engagement member (26) to a side being the engagement state (P); an actuator part (40) which advances and retreats for operating the engagement member (26); and a control part (51) which controls the actuator part (40) by electricity-carrying control. The control part (51) brings the engagement member (26) into the non-engagement state (notP) by carrying electricity to the actuator part (40).SELECTED DRAWING: Figure 2
【課題】シフトバイワイヤ式のパーキングロック機構において、電源の失陥などの障害発生時においてもパーキングロックの動作を確実かつ適切に行えるようにする。【解決手段】車両(50)の駆動輪(W)に駆動力を伝達する回転軸(54A)上に設けたパーキングギア(24)と、パーキングギア(24)に対して噛合う噛合状態(P)とパーキングギア(24)から離間する非噛合状態(notP)とをとり得る噛合部材(26)と、噛合部材(26)を噛合状態(P)となる側に付勢する付勢部材(27)と、噛合部材(26)を操作するために進退移動するアクチュエータ部(40)と、アクチュエータ部(40)を通電制御により制御する制御部(51)と、を有し、制御部(51)は、アクチュエータ部(40)に通電することにより、噛合部材(26)を非噛合状態(notP)とする。【選択図】図2
PARKING LOCK MECHANISM
パーキングロック機構
2016-05-23
Patent
Electronic Resource
Japanese