| 摘要 |
PROBLEM TO BE SOLVED: To cope with rattling resulting from a required difference preset, long time use, during the fitting time. SOLUTION: This rattling prevention mechanism comprises a block-shaped lifting hook piece 30 guided by the right and left vertical guide part 21 formed in the box part 13 of a grout guard 11 and having a receiving face 34 for receiving the hook-shaped tip part 3a of a hook piece 3, a first spring 45 for energizing the lifting hook piece to the opening window 9 side of a receiving plate 7, and a second spring 48 for always energizing the lifting hook piece 30 to the vertical bottom wall 14 side of the grout guard 11 so as to slightly move apart from the inner wall surface 7a of the receiving plate 7. When the hook piece is completely hooked with the lifting hook piece 30 with the first and second springs elastically deformed when a door is closed, a contact engaging tooth 42 provided in the lifting hook piece 30 is engaged with continuous engaging teeth 23 provided in the vertical guide part 21 of the grout guard 11.
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