二重ねじ機構を用いたロック式ツーウェイクラッチ

―二重ねじ機構の提案―

抄録

In load-sensitive transmissions, two-way clutches are used to interrupt the transmission of force from the output shaft side to the low reduction ratio reducer. This paper proposes a two-way clutch with a co-axial double-screw mechanism, which enables to use in linear motion mechanisms and to reduce friction. The co-axial double-screw mechanism consists of the first and second screw, which are co-axially installed. To lock and unlock the screws, backdrivable sliding screws whose lead angle difference is 5 deg are used. In the experiments, we developed a prototype model of the double-screw mechanism, and verified locked and unlocked motion of the proposed mechanism using the weight of the slide screw itself.