Disclosed is a module that includes: a base (31) a first drive member (28a) and a second drive member (28b). The second drive member (28b) is also movably mounted relative to the first drive member (28a) along a degree of freedom other than rotation about the second shaft (29b), between a first and a second configuration. A motion transmission system (35) transmits the drive motion produced by the drive motor (34) to the second drive member (28b) to rotate the second drive member (28b) about the second shaft (29b) between the first and second configurations.
