Patent ID: 7987553

Claim:
A caster with a brake structure comprising: a frame body; an operating element being inserted through the frame body; a pivot plate being pivoted to the frame body, a first end of the pivot plate supporting against the operating element, and a second end of the pivot plate including at least one engaging edge, when the operating element is pressed downwards, the first end of the pivot plate will be pushed to move downwards, so that the pivot plate will pivot to make the second end of the pivot plate move upwards; a lifting block being elastically disposed on the frame body and located at a lower side the pivot plate, the first end of the pivot plate pressing against an upper side of the lifting block, upon rotating, the pivot plate will push the lifting block to move downwards; a slide block being slidably disposed on the frame body, between the lifting block and the slide block being disposed a push means for pushing the slide block to move horizontally while the lifting block descends; an anti-slip block being elastically disposed on the frame body and located in a moving direction of the slide block, while moving, the slide block will push the anti-slip block to move; and at least one wheel being rotatably disposed on the frame body and provided in an inner side thereof with at least one positioning recess opposite the engaging edge of the pivot plate, and a press surface opposite the anti-slip block, so that when pivot plate pivots, the engaging edge of the pivot plate will be allowed to be inserted into the positioning recess to stop the wheel, when moving, the anti-slip block will press against the press surface of the wheel to stop the wheel; wherein the frame body includes a bottom frame, the bottom frame includes two rails, the slide block includes two protrusions on a bottom thereof, the two protrusions are disposed in the two rails of the bottom frame in such a manner that the slide block is slidably disposed on the frame body.