| 摘要 |
A base structure of a retainer comprising a pair of wall members 2 formed of a columnar body, which is vertically long, has a groove 4 formed in its longitudinal direction and has locking sections 5 formed in plural portions for locking a sliding member 3 at plural portions in the groove, and the sliding member 3 which is slidable in the groove of the wall member 2 and removably fitted to the locking section 5 through movable locking pieces 7.
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