FIRST COUPLING PART AND TOOL COUPLING

摘要

A first coupling part (1) interacts with a second coupling part (2) of a tool coupling. The first coupling part (1) includes a first main body (10) and a cone-shaped pin (11). The cone-shaped pin (11) is extended to an end surface (12) along a central axis (x) from the first main body. The cone-shaped pin can be inserted into a cone-shaped sheet (21). The cone-shaped pin includes a cavity (13). The cavity is extended from the end surface and includes a plurality of first bumps (15). The first bumps (15) are arranged at regular intervals from each other in a circumference direction against the central axis (x) to form a plurality of first recess (16). Each of the first bumps has a first contact surface (18) and interacts with a plurality of separated second contact surfaces (48) corresponding to a puling member (40) of the second coupling. The first contact surfaces make an acute angle with the central axis.