CLAMPING DEVICE OF AN ELECTRIC POWER SUPPLY UNIT OF BICYCLE EQUIPMENT

Electrically powered bicycle equipment (1), comprising an electric power supply unit (2), a component (10) having a seat (9) for removable attachment thereof, and at least one clamping device (11) of the electric power supply unit (2) to the component (10). The clamping device (11) is pivotally supported by one of the component (10) and the electric power supply unit (2) about a first geometric axis (12) stationary with respect thereto, and about a second geometric axis (13), which is parallel to, pivotal about, and not translatable with respect to, the first geometric axis (12). The other one of the component (10) and the electric power supply unit (2) has a retainer member (31) and the clamping device (11) has a retainable member (30) that is urged against the retainer member (31). The first axis (12) is interposed between the second axis (13) and the retainable and retainer members (30, 31), and the second axis (13) is closer to said one of the component (10) and the electric power supply unit (2) with respect to the first axis (12). The rotation of the clamping device (11) in a first direction (A) about the first axis (12) and in a second direction (B) opposed to the first direction (A) about the second axis (13) allows the retainable member (30) to be brought beyond the retainer member (31) during clamping and unclamping.