Nippon Seiki Co., Ltd.

Honda Motor Co., Ltd.

Yuki Suyama

Akihiko Yamashita

Masataka Tanahashi

Yuki Kikui

Tatsuya Kose

Takahiro Satou

Provided is a position detecting device with which it is possible to suppress a concentration of stress. A position detecting device is provided with a lever member which rotates about a central axis of rotation O, a magnet unit, which is one example of a detected portion, that rotates about the central axis of rotation O as the lever member rotates and a magnetic detecting element, which is one example of a rotation detecting unit, that detects the rotation of the magnet unit. The lever member is provided with a thick plate portion, positioned in a location close to the central axis of rotation O, and a thin plate portion which is positioned farther from the central axis of rotation O than the thick plate portion, and which is formed thinner than the thick plate portion.

Position detection device

The present invention provides a magnet unit and a position detection device that are excellent in thermal shock resistance without the risk of being damaged due to a temperature change and that are capable of detecting a position with high accuracy. A magnet unit comprises: a magnet that moves in a linear or rotating manner relative to a magnetic detection element (magnetic detection section) for detecting a change in a magnetic field; and a magnet holding member that moves in a linear or rotating manner while being fixed to an object L to be detected and that holds the magnet attached thereto. The magnet holding member has a fixed part that is fixed to the object L to be detected and a magnet housing part to which the magnet is attached. The magnet housing part has openings where opposite end surface portions of the magnet are exposed.

Magnet unit and position detection device

Growing community of inventors

Niigata, Japan

Yuki Suyama