| 摘要 |
The present invention relates to a caster in which a shaft and a wheel are concurrently braked by a convenient operation of a braking pedal, and which is capable of being operated in a convenient manner. The caster is configured such that a push-type braking pedal (12) is installed at a fixing shaft (13) such that the pedal (12) is always exposed outwardly from a carriage (11) to enable a user to operate the pedal (12) at any time, and a rotating shaft (14) and a wheel (15) may be concurrently and conveniently braked or released from braking by means of the braking pedal (12). Said braking means consists of: a rotating shaft braking unit operated by means of the braking pedal (12) to brake the rotating shaft (14) or release the rotating shaft (14) from braking; and a wheel braking unit which brakes the wheel (15) or releases the wheel (15) from braking. The rotating shaft braking unit and the wheel braking unit are operated concurrently by means of the push-type braking pedal (12) to enable the rotating shaft (14) and the wheel (15) to be concurrently and conveniently braked or released from braking. The rotating shaft braking unit and the wheel braking unit are configured to be elastically supported and buffered by respective springs thereof to protect a spline. The braking pedal (12) can be coupled to or separated from the spline only through a 30° rotation thereof about a coupling shaft, thereby performing braking and releasing of braking in a quick and convenient manner. |
