Quick release structure

A quick release structure, including:

• a rod member, including an axial member and a toothed member, two opposite ends of the axial member having a driving end and a connecting end, the toothed member being disposed on the connecting end and an outer peripheral surface of the toothed member having a plurality of rows of first teeth disposed thereon and spaced apart from one another along an axial direction of the axial member, each of the plurality of rows of first teeth including a plurality of first toothed portions arranged spacedly around the axial direction and protruding from the outer peripheral surface of the toothed member;
• an arm member, including a sleeving portion and a handle portion, the handle portion being disposed at a side of the sleeving portion and extending in a direction away from the axial direction, the sleeving portion defining a sleeving hole extending axially, an inner peripheral surface of the sleeving hole having a plurality of rows of second teeth disposed thereon and spaced apart from one another along the axial direction, each of the plurality of rows of second teeth including a plurality of second toothed portions arranged spacedly around the axial direction and protruding from the inner peripheral surface of the sleeving hole, the sleeving portion being sleeved with the toothed member and axially slidable between an engaged position and a rotation position relative to the toothed member;
• wherein when the sleeving portion is in the engaged position, the plurality of rows of first teeth and the plurality of rows of second teeth correspond to and are engaged with one another so that the arm member is non-rotatable relative to the rod member, when the sleeving portion is in the rotation position, the plurality of rows of first teeth and the plurality of rows of second teeth are staggered and disengaged with one another and aligned alternately in the axial direction so that the arm member is rotatable relative to the rod member;
• a restriction member, an end of the restriction member being connected with the connecting end, another end of the restriction member being configured to block the arm member from being detached axially from the rod member;
• a pushing means, disposed between the connecting end and the sleeving portion so that the sleeving portion is normally in the engaged position;
• wherein an end of the toothed member adjacent to the axial member includes a flange extending axially outward, one of the plurality of rows of first teeth which is closest to the flange than any other of the plurality of rows of first teeth is distanced from the flange in a preset distance, when the sleeving portion is located in the rotation position, an abutting end portion of the sleeving portion adjacent to the axial member is abutted against the flange, and one of the plurality of rows of second teeth which is closest to the axial member than any other of the plurality of rows of second teeth is located between the flange and the one of the plurality of rows of first teeth which is closest to the flange;
• wherein the pushing means biases the sleeving portion axially away from the flange and the axial member.