| 摘要 |
A caster braking and locking structure comprises a caster holder having disposed at its bottom a rough; one end of the trough connecting through a shaft mouth inserted with a shaft being provided upwardly a recess; a slot formed in the shaft mouth in relation to the recess; a positioning ring provided with gaps being disposed on the shaft at where in relation to the slot; a slider holder subject to push by a flexible member being disposed in the trough; one end of the slider holder being extended into a long slot in the caster holder by means of a positioning pin; a retaining block subject to the push by another flexible member disposed in the recess being placed in the same end of the slider holder, a chute being vertically formed over another end of the trough containing a longitudinally disposed slider; the lower end of the slider being connected to the end of the slider holder to define a slope; a pivoting recess being provided to mount a press button pivoted with a circular pivot in the upper portion of the biased side of the caster holder that connecting chute; a retaining surface being provided to the circular pivot in relation to the upper end of the slider to push the slider to move downward and hold in position, thus for the slop at the lower end of the slider to hold against the slope at the end of the slider holder; in turn both of the slider holder and the retaining block moving laterally to execute braking and locking to the casters.
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