Steering column clamping device
First Claim
1. A cam locking assembly comprising:
- a tie bolt;
a lever unit positioned about and rotatable about the tie bolt; and
a cam unit positioned about the tie bolt adjacent the lever unit, the cam unit comprising;
first and second cam plates, each cam plate comprising a first surface having at least one roller retaining recess, the first and second cam plates positioned with the first surfaces facing one another with the retaining recesses aligned and one of the cam plates engaged by and moveable with the lever unit; and
a roller positioned between the opposed retainer recesses.
11 Assignments
0 Petitions
Accused Products
Abstract
A cam locking assembly for an adjustable steering column. The assembly includes a tie bolt that is secured relative to the steering column. A lever member is positioned for rotation about the tie bolt. A caming unit is positioned about the tie bolt adjacent the lever member. The caming unit has a roller assembly positioned between a pair of opposed cam plates. One of the cam plates is associated with the lever member and rotates therewith and the other plate is fixed relative to such rotation. Each cam plate has a plurality of ramped recesses on its internal surface such that rotation of the one plate causes the rollers to ride up the ramps such that the plates are pushed apart. The pushed apart ramps cause clamping upon the steering column to lock its position.
67 Citations
24 Claims
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1. A cam locking assembly comprising:
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a tie bolt; a lever unit positioned about and rotatable about the tie bolt; and a cam unit positioned about the tie bolt adjacent the lever unit, the cam unit comprising; first and second cam plates, each cam plate comprising a first surface having at least one roller retaining recess, the first and second cam plates positioned with the first surfaces facing one another with the retaining recesses aligned and one of the cam plates engaged by and moveable with the lever unit; and a roller positioned between the opposed retainer recesses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An adjustable steering column assembly comprising:
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a steering column; a support bracket; and cam locking assembly comprising; a tie bolt extending through the steering column and support bracket; a lever unit positioned about and rotatable about the tie bolt; and a cam unit positioned about the tie bolt adjacent the lever unit, the cam unit comprising; first and second cam plates, each cam plate comprising a first surface having at least one roller retaining recess, the first and second cam plates positioned with the first surfaces facing one another with the retaining recesses aligned and one of the cam plates engaged by and moveable with the lever unit; and a roller positioned between the opposed retainer recesses. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification