Patent ID: 9415557
Filing Date: 2016-08-16
CPC Classification: B30B,F16H

Claim Text:
1. An electric cylinder system comprising; an electric cylinder; and a control section that controls the electric cylinder, wherein the electric cylinder includes: an outer cylinder; a rod configured to be capable of extending, and retracting in an axis direction from an opening on one end side of the outer cylinder; a bearing provided on an inside of the outer cylinder; a rotating shaft rotatably supported by the bearing and driven to rotate with driving force of a motor; a screw mechanism that converts a rotary motion of the rotating shaft into linear motion of the rod and transmits the linear motion; and a load detecting section that detects a load in an axis direction applied to the rod in a position where the load is transmitted from the rod through the screw mechanism, the control section controls the electric cylinder on the basis of a signal from an encoder of the motor and a signal from the load detecting section, the outer cylinder includes, on the one end side, a fixing section for fixing the electric cylinder to an attachment place, and the load detecting section is a strain gauge provided in a position on an outer circumference of the outer cylinder and between a position where the bearing is provided and the fixing section.