DEVICE FOR SECURING TUBULAR MEMBER ESPECIALLY STEERING VOLUMN FOR AUTOMOBILE

摘要

PURPOSE: To ensure stable securing retention and easy release by interposing a spacer member on a ball between the head of a connecting bolt forming a spacer whose opposed surface is a nearly V-shaped section and the corresponding bearing stopper, thereby constituting the captioned securing device. CONSTITUTION: A steering column is locked to a car body via an inverted U-shaped structural fixture 6, and sidewalls 8 and 10 of the fixture 6 come into contact with an assembly member 14 integral with a cover tube 1 and are held by a bolt 20. In this case, an annular rim 36 installed in an opening edge part of a casing 38 constituting the end of a control lever is engaged with a peripheral shoulder part 34 of a washer 24 fitted in one end side of the bolt 20. Then, spacer balls 52 in a V-shaped sectional space are interposed between the washer 24 in the casing 38 and a conical head 42 with a truncated conical surface 45 at an end of the bolt 20. These spacer balls 52 are transferred to the radial inward along a curved track by rotation of a control lever 40, and thus the steering column is secured by the wedge effect.