Fastening mechanism

摘要

Fastening members such as tapping screws and rivers having a shaft are used to fasten objects such as circuit elements, a circuit board and a casing to a target object such as a heat sink of a circuit unit. The target object may have a uniform cross-sectional shape along a specified direction, having a groove formed over the entire length along this direction. The fastening members are passed through the objects to be fastened and inserted into this groove to be affixed to the target object so as to fasten the objects to be fastened onto the target object.