| 摘要 |
A buffer structure of a treadmill includes a load board, two side rods and two tooth racks. The two side rods includes a pair of hand wheels and a pair of gear wheels which are respectively located central sections of the two side rods and connected by a link rod, and a pair of fixing rods disposed under the link rod. The two tooth racks includes toothed portions at upper ends thereof to mesh with the gear wheels, fixing posts at inner sides thereof for insertion of the hollow cylinders, fixing bolts screwed to the fixing posts, and two slots at two sides of the fixing bolts. The two slide bolts are inserted through two through holes of the two side rods and the two slots and connected with nuts and washers. A gap is formed between the tooth racks and the side rods for slide.
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