| 摘要 |
PROBLEM TO BE SOLVED: To provide a leg length adjustor which can firmly fix both upper and lower supports. SOLUTION: This leg length adjuster for a desk has a pipe shape upper support 20 slidably inserted into a pipe shape lower support 20 through the open upper end part of the pipe shape lower support 10. An inner metal fitting 40 placed in between the upper lower supports 10, 20 has a bolt stopper fitting 50 placed corresponding to the fixed bolt part and a support fitting 60 placed in the back side of the fitting 50. When the bolt 70 is inserted into an outer metal fitting 30 and fastened through the bolt stopper fitting 50, the bolt stopper fitting 50 and the outer metal fitting 30 cramps the upper and lower supports 10, 20 from both inside and outside and simultaneously the support fitting 60 is pushed by the tip end part of the shank part of the bolt 70 into and pressed against the inside face of the upper support 20. Thus the upper support 20 is fixed to the lower support 10.
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