ROTATING MECHANISM, INDUSTRIAL ROBOT AND METHOD FOR RETURNING ROTATING BODY TO ORIGINAL POSITION

摘要

A rotating mechanism which returning a rotating body to an original position. The first detecting mechanism for detecting that the rotating body is in the original position is provided with a first section-to-be-detected affixed to the rotating body and the first detecting section affixed to a supporting body. A second detecting mechanism is provided with a swing member attached to the supporting body, an engaging member that lets the swing member swing, a second section-to-be-detected affixed to the swing member, and a second detecting section affixed to the supporting body. The first detecting section detects the first section-to-be-detected at one or two positions, and the second detecting section switches between ON and OFF at one position. The rotating body is first rotated to the position at which the second detecting section switches between ON and OFF, in order to return the rotating body to its original position.

主权项

1: A rotating mechanism comprising:
a supporting body; a rotating body rotatable 360 degrees or more and 720 degrees or less with respect to said supporting body; a motor which rotates said rotating body; a first detecting mechanism and a second detecting mechanism which detect that said rotating body is in an original position; and a motor controlling means which controls said motor; wherein said first detecting mechanism detects a first section-to-be-detected, and comprises:
the first section-to-be-detected, which is affixed or formed to either said supporting body or said rotating body; anda first detecting section, which is affixed to the other of either said supporting body or said rotating body; wherein said second detecting mechanism detects a second section-to-be-detected, and comprises:
a swing member, which is swingably attached to said supporting body;an engaging member, which is affixed or formed to said rotating body and engages with said swing member to let said swing member swing;the second section-to-be-detected, which is affixed or formed to either said swing member or said supporting body; anda second detecting section which is affixed to the other of either said swing member or said supporting body; wherein said first section-to-be-detected and said first detecting section are arranged such that said first section-to-be-detected is detected by said first detecting section at one or two positions within a rotating range of said rotating body; wherein said swing member is attached to said supporting body such that said second detecting section switches between ON and OFF at one position in the rotating range of said rotating body; and wherein said motor controlling means is configured to control said motor so that, when returning said rotating body to the original position, said rotating body is rotated to the position at which said second detecting section switches between ON and OFF.