| 摘要 |
There is provided a caster device including a caster, a crank shaft, a rotating member, a pushing member and a connecting rod. The crank shaft is coaxially coupled to a reciprocatingly rotatable cam element of the caster. The rotating member is rotatably coupled to a movable object. The rotating member has a plurality of pins spaced apart from one another in a circumferential direction. The pushing member is vertically movably coupled to the movable object. The pushing member rotates the rotating member by contact with the pin. The connecting rod and the crank shaft convert a rotation of the rotating member to a reciprocating rotation of the cam element. The caster is set to one of a plurality of operating modes according to the reciprocating rotation of the cam element.
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