| 摘要 |
This invention relates to an elevating structure for a motor driven treadmill and in particular to one including a base provided with a front wheel support and a rear wheel support, a frame mounted on the box channel of the front wheel support and provided with an upper plate and a lower plate, a motor installed between the upper plate and the lower plate of the frame and having a splined axle, a driving gear mounted on the upper plate of the frame and engaged with a medium gear which is in turn engaged with the splined axle of the motor, a gear train engaged with the splined axle of the motor and with a variable resistor, and a cover adapted to enclose the upper plate of the frame, whereby the amount of exertion required to maintain pace of an user with the treadmill may be adjusted by inclining the running surface.
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