| 摘要 |
<p>The invention concerns a shell having on its external surface, also called sole, a circular opening comprising a rim with a toothing for receiving said device for fixing the shell to the surf board. Said device consists of a first circular part (1) fixed on the surf board defining at its lower portion housings (15) with the surf board surface and retaining at its periphery a second circular part (2) fixed in rotation with said first part leaving it free to move in the direction perpendicular to the surf board over a predetermined distance. The second part has at its lower surface a toothing (21) corresponding to said shell toothing. The device further comprises a third circular part (3) arranged beneath the first part in said housings, that is between the surf board and said first part, maintained fixed by the latter in the perpendicular direction but in free rotation over a predetermined angle. The third part has at its periphery projecting segments (31) in the form of a ramp in the direction perpendicular to the surf board, said projecting segments being urged by their ramps into contact with corresponding ramps (25) arranged on the second part internal periphery (23) such that a rotation by a predetermined angle of the third part (3) presses the second part against the shell thereby maintaining it in a predetermined position relative to the surf board.</p> |
