| 摘要 |
PROBLEM TO BE SOLVED: To solve problems in conventional art that it does not necessarily secure sealability in a short period or over a long period depending on a variation in molding accuracy and compressive force of a closing condition of a base body and a cover body constituting a casing, and that it naturally requires high manufacturing cost due to the use of a complicated operation mechanism for eliminating a pressure difference between inside/outside the air, since an elastic body as a raw material for packing is compressed for attaining sealability by the packing. SOLUTION: An inside sealing packing is characterized by applying multiple series of wave front shapes to a cross section of the packing composed of a belt-like elastic body arranged on a contact surface between the base body and the cover body. COPYRIGHT: (C)2010,JPO&INPIT
|
