| 摘要 |
Provided is a caster system equipped with hand-operated brakes. The caster system is easy to use while being compact, lightweight, and low-cost. Wheel 2 comprises a tire 1 and a rim 16. A fork 3 supports the rotating wheel 2 via an axle 15. A base 4 mounted on a bag supports the swinging fork 3. A hollow swing shaft 14 is mounted on a bearing 12 in the base 4. A wire 7 for transmitting force is pulled by means of a rotation knob 13 in a controller located away from the wheel 2. Force is applied by a spring to the wire 7 in the opening direction. Therefore, if the rotation knob is rotated by an angle not smaller than a predetermined value, rotational moment is applied in the reverse direction, resulting in the rotation knob 13 being locked. Force is transmitted to a lever 18 via the wire 7. The force of the wire 7 is magnified by the action of the lever 18, and the resulting force pushes a brake pin 5 that is located inside the swing shaft 14 in the fork 3. The brake pin 5 abuts the tire 1 with the result that frictional resistance prevents rotation of the wheel 2. |
