Patent Number: 7,913,579

Title: Magnetostrictive load sensor and movable unit comprising same

Abstract: A magnetostrictive load sensor includes a coil with a through hole, a load sensing member disposed in the through hole, first and second magnetic circuit defining members which are joined together so as to cover the coil and which together define a magnetic circuit to pass a magnetic flux that has been generated by current flowing through the coil, and a housing that houses the coil. The load sensing member and the first and second magnetic circuit defining members are arranged together. Each of the first and second magnetic circuit defining members includes a first portion that contributes to defining the magnetic circuit and a second portion that is arranged so as to extend from the first portion and extend out of the magnetic circuit. The housing holds and fixes together the respective second portions of the first and second magnetic circuit defining members.

Inventors: Mizuno; Yutaka (Shizuoka, JP)

Assignee: Yamaha Hatsudoki Kabushiki Kaisha

International Classification: G01L 1/12 (20060101)

Expiration Date: 2019-03-29 0:00:00