Caster system equipped with hand-operated brakes
AssigneeKabushiki Kaisha Hinomoto Jomae
InventorTamaki Eguchi
Life of this patent
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Abstract
Hand-operated brakes caster system is easy to use, compact, lightweight, low-cost. A fork supports a rotating wheel via an axle. A bag mounted base supports the swinging fork. A hollow swing shaft mounts on a base bearing. A force transmitting wire is pulled by a rotation knob in a controller away from the wheel. Opening direction force is applied by a spring to the wire in the opening direction. Therefore, if the knob is rotated by an angle not smaller than a predetermined value, reverse rotational moment is applied, locking the rotation knob. Force transmitted to a lever via the wire is magnified by the action of the lever, and the resulting force pushes a brake pin located inside the fork swing shaft. The brake pin abuts the tire resulting in frictional resistance preventing rotation of the wheel.
Claims6
A caster system equipped with hand-operated brakes comprised of a wheel with a tire, a fork for supporting the wheel capable of rotating with an axle, a base fixed to a body of a bag supported by said caster system, said base for supporting the fork capable of turning with a swing shaft of about a hollow cylinder swing shaft, a brake pin for stopping rotation of the wheel, a brake driver for pushing the brake pin to a tread of the tire, a connection wire for transmitting force to the brake driver which is maintained in an off-brake position by a spring lever, and a controller for locking the wheel with the single operation of pulling the connection wire, wherein said controller comprises a rotation knob, a double crank with two crank arms fixed to the rotation knob and two links with one end of said links connected to the double crank and the other end of said links connected to the connection wire, said two links are rotationally mounted to rotate in a direction opposite the rotation direction of the rotation knob, said two links lock the rotation knob by reversing rotation when the rotation knob is turned beyond a predetermined angle, said brake pin is made to push the tire, and said brake driver transmits the braking force of the connection wire to the brake pin magnified by the spring lever.
A caster system equipped with hand-operated brakes comprised of a wheel with a tire, a fork for supporting the wheel capable of rotating with an axle, a base fixed to a body of a bag supported by said caster system, said base for supporting the fork capable of turning a hollow cylinder swing shaft, a brake pin for stopping rotation of the wheel, a brake driver for pushing the brake pin to a tread of the tire, a connection wire for transmitting force to the brake driver which is maintained in an off-brake position by a spring lever, and a controller for locking the wheel with the single operation of pulling the connection wire, wherein said controller comprises a handle, two cranks connected to the handle and two links with one end connected to the two cranks and the other end connected to the connection wire, said two links are rotationally mounted to rotate in a direction opposite the rotation direction of the handle, said two links lock the handle by reversing rotation of the links when the handle is turned beyond a predetermined angle.
Dependencies are inferred from the claim text.