Tool Changer, Coupling Unit, And Module Unit

Abstract: Provided is a tool changer, a coupling unit, and a module unit, which can suppress, better than the prior art, damage to a fixing section due to an external load when the module unit is fixed to a module mounting portion of a coupling unit main body, and can also make the module unit smaller. When a first module unit 50a is attached to a coupling unit main body 13, a second fitting portion 62 having a concave cross-sectional shape holds a first fitting portion 57 of a module mounting portion 56a, the first fitting portion 57 having a convex cross-sectional shape, from both sides in the thickness direction orthogonal to the circumferential direction of the coupling unit main body 13, and the second fitting portion 62 fits into the first fitting portion 57.

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