The invention concerns a toothbrush whereof the neck (1) is provided with a centring spindle having a snap-on tab (2) at its end secured in a hole (4) of the handle (3).
The cam surface has a centering depression and the follower member is carried by an arm member extending laterally from a centering shaft (15) mounted for rotational movement relative to the cam ring.
The device comprises a UV source (1), a supply means (3) for an inert gas, and a holding means (5) for holding the information carrier in a centered position with respect to a centering axis (5).
This centering device (38) has two centering members (63; 64) that are rotatively mounted each on a centering pin (65) of the corresponding outer fork (31; 32).
The turntable (4) comprises a centring recess (10) and the disk clamper (7) comprises a centring pin fitting into the centring recess.
The centering pin (18) is provided with an external lateral surface (29) that has an undulating development along the centering axis (X).