Releasably locking device for a bicycle component, in particular for a wheel, and clamping element for the same

A releasably locking device for securing a bicycle component to a bicycle frame having aligned holes comprising:

• a traction rod configured to pass through said aligned holes of the component and of the bicycle frame, the traction rod having a first end equipped with an abutment widening at one of said aligned holes and a second end having a through hole;
• and
• a clamping element comprising:
• a housing having an abutment surface at the other one of said aligned holes, and two aligned through openings in a side wall thereof;
• a rotation cam extending between the through openings of the housing and the through hole of the second end of the traction rod, and comprising two end portions that can be commanded into synchronous rotation;
• and
• a lever-operated manual actuation system that commands into synchronous rotation the end portions of the cam and that drives the cam between a clamping operating position wherein the traction rod forces the abutment widening and the abutment surface towards each other, and a release position wherein the traction rod forces the abutment widening and the abutment surface apart;
• wherein said lever-operated manual actuation system comprises a pair of separately formed levers, a first end of each lever and a respective end portion of the rotation cam being coupled for integrally rotating;
• and
• wherein a second end of each lever comprises one of corresponding first and second mating portions comprising at least one of alignment means for aligning the first and second levers and coupling means for coupling the first and second levers to each other.