| 摘要 |
A caster with a structural improvement includes a wheel holder, a spindle seat, a spindle and two wheels. A through hole of the spindle seat is covered on a spindle housing of the wheel holder with a ring groove of the spindle seat engaged by an annular flange of the spindle housing, further the spindle is inserted into the spindle housing with at least one ring groove of the spindle engaged by at least one circumferential ridge of the spindle housing, and finally axle housings of the wheels are inserted by a wheel axle of the wheel holder with a ring groove of the wheel axle engaged by a circumferential ridge of the axle housings, whereby the wheels can swivel and move. Moreover, the spindle seat can be assembled with wheel holders and wheels of various sizes, thereby reducing the costs of new molds for spindle seats of different sizes.
|
