The invention relates to a retaining device (10) for a boot on a gliding board (20), the retaining device (10) comprising: - a frame (100) configured to cooperate with the gliding board (20) so as to be able to slide longitudinally relative to the gliding board (20), the frame (100) having a lower face (103), extending mainly in a plane, called the main plane (XY ), - a holding mechanism (110) of a fastening element belonging to the boot, - an adjusting member (1200). The adjustment member (1200) comprises a cooperation portion (122) mounted in rotation around an axis of rotation (z122) inclined at an angle (α) of between 30 ° and 90 ° with respect to said main plane ( XY), the cooperation portion (122) comprising a spiral portion configured to cooperate with the rack (32) so as to cause the longitudinal sliding of the frame (100) relative to the gliding board (20). Figure for the abstract: Fig. 3
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