| 摘要 |
PROBLEM TO BE SOLVED: To provide a fitting structure for casings 110 and 120 that can prevent air leakage due to molding strain. SOLUTION: When the casing 110 and the casing 120 are fitted together, a tip 122 of a fitting projection 121 is pressed against a bottom 114 of a fitting groove 113. The tip 122 of the fitting projection 121 is normally squeezed to offer fitting and reliable sealing, so that even in a portion where molding strain normally results in a gap and air leakage, the squeeze absorbs the molding strain and does not form a gap to ensure sealing by contact between the tip 122 of the fitting projection 121 and the bottom 114 of the fitting groove 113. This can prevent air leakage due to the molding strain of the casings.
|
