| 摘要 |
AN EXERCISING MACHINE INCLUDES A BASE FRAME (20), AN UPRIGHT POST (21), LEFT AND RIGHT STEPPING LEVERS (30), LEFT AND RIGHT HYDRAULIC CYLINDERS (23),AND A RETARDING UNIT (40). THE RETARDING UNIT (40) INCLUDES A CLAMPING MEMBER (401) WHICH IS MOUNTED ON THE UPRIGHT POST (21) AND WHICH HAS TWO OPPOSITE LUGS (41) DISPOSED BETWEEN THE LEFT AND RIGHT STEPPING LEVERS (30),A SHAFT (431) EXTENDING THROUGH THE UPRIGHT POST (21) AND THE TWO OPPOSITE LUGS (41), A RETARDING LEVER (42) WHICH IS MOUNTED PIVOTALLY ON THE SHAFT (431) BETWEEN THE TWO OPPOSITE LUGS (41) FOR ROTATING ABOUT THE SHAFT (431) AND WHICH HAS LEFT AND RIGHT ARMS (421) THAT EXTEND OPPOSITELY AND RESPECTIVELY FROM THE SHAFT (431) TO ABUT RESPECTIVELY AGAINST BOTTOM SIDES OF THE LEFT AND RIGHT STEPPING LEVERS (30), AND TWO OPPOSITE RESISTANCE MEMBERS (44) DISPOSED RESPECTIVELY BETWEEN ONE OF TWO OPPOSITE SIDES OF THE RETARDING LEVER (42) AND ONE OF THE OPPOSITE LUGS (41) AND BETWEEN THE OTHER ONE OF TWO OPPOSITE SIDES OF THE RETARDING LEVER (42) AND THE OTHER ONE OF THE OPPOSITE LUGS (41).FIG. 3
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