22-02-2018 дата публикации
Номер: US20180050717A1
Принадлежит:
A braking device including: a loading plate; a pair of front wheels and a pair of rear wheels; a handle provided with clamping units; buffer units installed at the loading plate; and a braking unit that includes: a plurality of engaging grooves formed along a rim of a circular recesses; a brake bar disposed between the rear wheels; an actuating link supported by the brake bar and connected to a hinge portion; a connecting link connected to the actuating link by an interlocking bar; a connecting spring connected to the brake bar and the interlocking bar, a push switch fixed at an upper side of the connecting link, and a foot brake pedal fixed at an upper side of the push switch and has a top surface exposed at the top of the loading plate. 1. A braking device of a portable cart , comprising:{'b': '2', 'a loading plate , which is formed to load goods thereon;'}{'b': 3', '10', '2, 'a pair of front wheels and a pair of rear wheels , which are mounted at a lower side of the loading plate to be rotatable;'}{'b': 7', '2', '200, 'a handle , which is supported at an upper side of the loading plate , is foldable in a forward direction, and is provided with clamping units so as to maintain a state of being raised upwardly;'}{'b': 8', '2', '2, 'buffer units , which are installed at both front corners of the loading plate and perform buffering and steering functions when the loading board collides with an obstacle; and'}{'b': 100', '10, 'a braking unit , which brakes and controls the rear wheels ,'}wherein{'b': 100', '12', '11', '10', '20', '10', '10', '12', '11', '30', '20', '32', '2', '20', '40', '30', '42', '30', '50', '20', '42', '20', '42', '60', '40', '2', '2', '70', '60', '2, 'the braking unit includes: a plurality of engaging grooves , which are formed along a rim of a circular recesses formed on an inner side of each of the rear wheels that face each other; a brake bar , which is disposed between the rear wheels and controls the rotation of the rear wheels by being ...
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