TWO-POSITION ACTUATOR AND GRIPPER DEVICE WITH THE ACTUATOR

摘要

Actuator (8, 8') comprising an electric motor (10) with a rotary output shaft (34) and an output member (14) that can be switched between two angular positions which is fixed to the output shaft. The actuator comprises a rocker mechanism (16) comprising a spring (46) and a non-rectilinear mobile arm (48), the spring being fixed on the one hand to the mobile arm and on the other hand to a fixed spring anchor (36) on a support (12) that is fixed relative to the electric motor, the mobile arm (48) being coupled by means of a pivot (42) to the support (38) of the output member in a pivoting manner, a virtual line (L) formed between the centres of said pivot of the rocker mechanism and said fixed spring anchor corresponding to a resultant of the traction force on the mobile arm, the non-rectilinear shape of the mobile arm (48) being configured so as to allow the mobile arm partially to surround the output shaft (34) of the electric motor in one of said two positions.