The invention relates to a locking member (10) of a toothed wheel (20), the locking member (10) being integrally formed and comprising: - a frame (101), - a first lever (102) comprising a first locking tooth (102d) of the toothed wheel (20), - a first elastic return portion (103) connecting the first lever (102) to the frame (101), characterized in that: the locking member (10) comprises at least: - a second lever (102) comprising a second locking tooth (102d) of the toothed wheel (20), - a second elastic return portion (103) connecting the second lever (102) to the frame (101), and in that the first lever (102) and said at least one second lever (102) are arranged to sequentially block the rotation of the toothed wheel (20).
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