Aisin Aw Co., Ltd.

Jiro Maeda

Shigeo Tsuzuki

Naoki Ohkoshi

Yoshitaka Murase

Kazuo Takemoto

Hirotoshi Eishima

A vehicle range changeover mechanism is driven in response to operation of a shift lever. The range changeover mechanism has an output sector gear that is unrotatably connected to a range control shaft, and a position detecting sensor, a portion of which that is interlocked with and connected to the range control shaft. Looseness between the output sector gear and the position detecting sensor portion is eliminated by provision of a leaf or spring plate, thereby assuring rotation of the position detecting sensor portion corresponding one to one with the rotational motion of the range control shaft.

Shift range changeover mechanism

A judging section judges whether or not ranges detected, respectively, by a first range detection section consisting of a first detection section and a position detecting sensor, and a second range detection section consisting of a second detection section; a Cdetecting sensor and a B1 detecting sensor are in mutual agreement, and when the detected ranges are not in mutual agreement, a failure judging section judges a failure of the first range detection section.

Vehicle range shift mechanism

A range switching apparatus is provided with a pair of discs defining, an engagement groove therebetween, a pin, and an arm portion which are used for switching to a desired drive range; a motor for driving the discs, the engagement groove, the pin, and the arm portion used for switching the drive range; a speed reducing gear mechanism for reducing a drive force of the motor and transmitting the drive force to the discs, the engagement groove, the pin, and the arm portion, used for switching the drive range; and an electromagnetic clutch for engaging and disengaging a power transmission state between the motor and the speed reducing gear mechanism. An adsorbed disc of the electromagnetic clutch is connected to a power input shaft of the speed reducing gear mechanism.

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Anjo, Japan

Jiro Maeda