| 摘要 |
A caster braking device which comprises the following elements. A wheel has a protruding rim with an axial hole in a center of the protruding rim. A supporting seat has a round mask one side of which is connected to a vertical tube. An axial rod has one end installed with a stopper. A positioning rod has an upper end. A sliding seat has a U-like shape; two guide posts being transversally formed between two legs of the sliding seat so that a guide groove being formed between the two guide posts. The two guide posts are placed in the recess of the positioning rod. A pin passes through the pinhole of the positioning rod and the guide groove of the sliding seat so as to combine the positioning rod and the sliding seat.
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