| 摘要 |
PURPOSE:To obtain a hinge joint free from looseness of fitting condition by forming a rough face on the surface of a switch body made of glass to which packings are attached. CONSTITUTION:Stained prints 8A, 8B, formed so as to encircle fitting holes 4A, 4B, are obtained through printing reticulate hard rubber or synthetic resin paint on the face of a glass followed by its staining. When a back door A is fitted in a hinge B, stained prints 8A, 8B cut into the surface of packings 5A, 5B and cause strong frictional force between the packings 5A, 5B and the back door A. Accordingly, even if there are secular changes of the packings 5A, 5B, or strong force works on the back door A at its opening or closing, fitting condition of the back door A does not get loose. |
