| 摘要 |
PROBLEM TO BE SOLVED: To vertically adjust the position of a shelf board material and directly attach/detach the shelf board material at a predetermined position. SOLUTION: Both of an internally fitting member 3 for adjusting the height of the shelf board material and an externally fitting member 4 externally fitted to the internally fitting member 3 are axially divided into two. The inner surface of the internally fitting member 3 is provided with hook projections 7, and a support 5 is axially provided with a plurality of hook holes 6 to engage the hook projection 7 with the hook hole 6 to locate them. The divided parts of the internally fitting member 3 are provided with tapered dovetail portions 9, and the externally fitting member 4 externally fitted to the internally fitting member 3 is provided with tapered dovetail grooves 10 each fitting to the dovetail portion 9. Accordingly the dovetail portion 9 is fitted to the dovetail groove 10 to fasten and joint the internally fitting member 3 by fastening effect of the taper and also secure the internally fitting member 3 at the support 5. COPYRIGHT: (C)2004,JPO
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