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1. (WO2010122664) ROTARY MESHING ENGAGEMENT DEVICE

Pub. No.:    WO/2010/122664    International Application No.:    PCT/JP2009/058170
Publication Date: Fri Oct 29 01:59:59 CEST 2010 International Filing Date: Sat Apr 25 01:59:59 CEST 2009
IPC: F16D 48/06
B60K 6/445
B60W 10/02
B60W 20/00
F16D 11/00
Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA
トヨタ自動車株式会社
ISHII, Daisuke
石井 大祐
OKUWAKI, Shigeru
奥脇 茂
Inventors: ISHII, Daisuke
石井 大祐
OKUWAKI, Shigeru
奥脇 茂
Title: ROTARY MESHING ENGAGEMENT DEVICE
Abstract:
A rotary meshing engagement device is adapted such that the amount of stroke of an engaging element is satisfactory detected without an increase in cost and size. A lock mechanism (400) comprises a sleeve (SL)(second engaging element) fixed in the circumferential direction and adapted to be movable in the direction of an axis, a hub (401) (first engaging element) rotatable in the circumferential direction perpendicular to the direction of the axis, and an actuator (407) capable of imparting drive force to the sleeve (SL) for driving the sleeve in the direction of the axis. A dog tooth (403A) is formed on the inner peripheral surface of the sleeve (SL), and a dog tooth (402A) is formed on the hub (401). The dog teeth have engagement surfaces arranged at a predetermined angle ϑ1 relative to the axis so that the hub (401) rotates relative to the sleeve (SL) in a process in which the sleeve (SL) moves in the direction of the axis. An ECU (100) estimates the amount (Y) of stroke of the sleeve (SL) based on the amount of rotation of the hub (401) and the predetermined angle ϑ1.