Patent ID: 11884356
Assignee: nan
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A bicycle quick release device, comprising:
an inner shaft, one end of which comprises a first threaded portion and the other end of which comprises a second threaded portion;
a lever comprising a first screw hole, the first screw hole being threaded to the first threaded portion, the lever being movable between a release position and an urge position under an externally applied force;
an outer sleeve, the outer sleeve axially comprising a sleeve hole for the inner shaft to pass through, an outer circumferential face of the outer sleeve comprising a sleeve body, an abutting portion disposed on one end of the sleeve body and an expansion portion disposed on the other end of the sleeve body, the expansion portion comprising a plurality of axially extending sectioned grooves, an outer diameter of the abutting portion being less than an outer diameter of the sleeve body;
an urging unit, disposed between the lever and the abutting portion of the outer sleeve, the urging unit comprising an urging block and an abutting ring, the urging block being elastic and comprising an opening for the inner shaft to pass through, one end of the urging block abutting against the lever, the abutting ring comprising a through hole for the inner shaft to pass through, one end of the abutting ring abutting against the urging block, the other end of the abutting ring comprising a recessed abutting groove for abutting against the abutting portion of the outer sleeve such that at least a portion of the abutting portion is disposed within the abutting ring and abutting against the abutting groove, an end face of the abutting ring opposite the urging block and connected to the abutting groove radially extending beyond the sleeve body and comprising plurality of teeth; and
a tapered expansion unit, the tapered expansion unit comprising a second screw hole for engaging with the second threaded portion of the inner shaft, an outer circumferential face of the tapered expansion unit comprising a conical face;
wherein when the lever is in the urge position, the tapered expansion unit is pulled to move towards an interior of the expansion portion, such that the conical face applies an outward urging force to increase an outer diameter of the expansion portion; and
when the lever is in the release position, the tapered expansion unit is moved away from the interior of the expansion portion, such that the conical face stops applying the outward urging force to the expansion portion.