Shaft connector and torque limiter

摘要

A first member 170 of a second tube member 111 of a tube member includes an annular diametrical protrusion 181 that protrudes outward in the diametrical direction in one side of a hydraulic passage 126 in the axial direction. A second member 171 of the second tube member 111 includes an inner peripheral surface 242 located outside the hydraulic passage 126 in the diametrical direction in one side of the hydraulic passage 126 in the axial direction and a first diametrical protrusion 201 that is located nearer to the one side in the axial direction than the inner peripheral surface 242 and protrudes inward in the diametrical direction. The diametrical protrusion 181 is butted against the first diametrical protrusion 201 to weld and form the butted parts together.