| 摘要 |
A movable "L" type desk comprising a main desk with a main desk board on top; an extension desk with an extension desk board on top; the extension desk connects to one of the main leg of the main desk with a connection mechanism rotatably, a rolling wheel is on the bottom of the extension leg; a connection mechanism consists of a main leg of a main desk with a top and bottom leg, a round shaft is on top of the bottom leg, a hollow connecting tube is installed vertically near the open end of an extension beam, at least one rub-resistant ring is inside the connecting tube, the round shaft passes through the rub-resistant ring, the top of the round shaft passes through the rub-resistant ring and connects to a top ring. The main desk and the extension desk are connected in single point rotatably; the extension desk connects to the main desk without the angle and direction limitation
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