| 摘要 |
PURPOSE: A roller sled is provided to effectively perform braking and steering by compacting structure, to reduce the production cost, and to make carrying along easy. CONSTITUTION: A roller sled comprises bodies(10,12) which a user gets on, main and auxiliary wheels(20,25,26) installed on the bodies, a brake wheel(35) installed behind the bodies, an operating bar(40) rotatably combined to the bodies, a connecting member(45) for connecting the operating bar with the brake wheel, and a brake installed on the operating bar. Footsteps(5) are prepared at both sides of the upper body to help a user gets on the roller sled. A spring is installed between the lower body and the upper body to absorb vibration. A vertical shaft(30) is combined to the rear portions of the bodies. Since the vertical shaft is installed to rotate horizontally, the brake wheel rotates horizontally. The main wheel is braked by lifting up the brake wheel, and the roller sled is steered smoothly. Braking is performed smoothly by adjusting the tension of the connecting member.
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