Device for securing a tubular member, in particular a motor vehicle steering column

A securing device for securing a tubular member, and in particular a motor vehicle steering column, which can be adjusted continuously by pivoting and/or by axial displacement, said device comprising:

• a fitting (6) fixed onto bodywork of the vehicle and forming an inverted-U-shaped structure in which the tubular member can be displaced;
• an assembly member (14) which is integral with the tubular member and which has two opposite faces (15, 16) in contact with side walls (8, 10) of the fitting;
• and locking means, for locking the tubular member by bringing the side walls (8, 10) of the fitting (6) closer together;
• said locking means comprising:
• a longitudinally-extending tie bolt (20) which traverses, parallel to a pivot axis of the tubular member, the side walls (8, 10) of the fitting (6) in curved slots (30) of the side walls (8, 10), between two outer bearing stops (24, 26) carried by the tie bolt;
• a control lever (40);
• and
• at least one spacer member (52);
• wherein facing surfaces of a widened head (42) of the tie bolt (20) and of a corresponding one of said bearing stops (24) define a space with a substantially V-shaped cross-section;
• and
• wherein said one spacer member (52) is disposed in said space and is displaceable radially by rotation of the control lever (40) about the longitudinal axis of the tie bolt (20).