| 摘要 |
PROBLEM TO BE SOLVED: To provide a caulking joint part capable of precisely adjusting the caulking deformation quantity of the boss made of a synthetic resin in a small part and capable of inspecting the quality of the caulking deformation quantity simply and accurately. SOLUTION: In the caulking joint part for inserting the boss made of a synthetic resin provided to a second part (e.g., cover body) in a protruded state into the through-hole opened in a first part (e.g., substrate) to fit the same in the through-hole and heating the head of the boss to melt and deform the same in the periphery of the through-hole to integrally join the first and second parts, a mark 5 for visually observing the melt deformation quantity of the head of the boss is provided to the periphery of the through-hole. Especially, the mark 5 has a first region 5a covered at the molten deformed region of the boss at the time of proper melt deformation of the boss and a second region 5b covered at the molten deformed region of the boss at the time of excessive melt deformation of the boss. COPYRIGHT: (C)2005,JPO&NCIPI |
