| 摘要 |
<p>The exercising frame (1) includes one or two hinged levers (3) which are operated by arm or leg movement. A tension spring (5) which is attached to the fixed frame support and the hinged lever provides the additional force that must be overcome when using the exercising frame. The spring anchor point (7) on the hinged lever is carried by a screw spindle (8) which runs parallel with the lever. An electric motor (10) is either coupled to the screw spindle directly or by a flexible drive shaft (14). The person using the frame can then adjust the spring force without stopping the exercise by a remote control motor switch.</p> |
