Locking ring assembly and steering column

Abstract

The invention discloses a locking ring assembly used to be installed on a steering mandrel. The locking ring assembly comprises an allowance ring and a locking ring sleeve. The locking ring sleeve hasa sleeve hole used for the steering mandrel to pass through. One end of the locking ring sleeve is provided with an allowance ring installing end, and the other end of the locking ring sleeve is provided with a lockpin cooperation end. The allowance ring is in the allowance ring installing end in interference fit, and is coaxially arranged with the sleeve hole. The lockpin cooperation end is provided with at least a lockpin insertion hole communicated with the sleeve hole. The invention also discloses a steering column. Through making the allowance ring installing end and the lockpin cooperation end be separated by a distance, a cooperation region between the allowance ring and the locking ring sleeve and the cooperation region of the locking ring sleeve and the lockpin would not be overlapped, so that integrated thickness after the allowance ring and the locking ring sleeve are assembled together is reduced, gap requirement of an inner sleeve and the steering mandrel is satisfied. The steering mandrel can enter the inner sleeve when the steering mandrel is crumpled while realizing locking of the steering mandrel.

Description

technical field [0001] The invention relates to the technical field of automobile steering column, in particular to a lock ring assembly installed on a steering spindle and a steering column with the lock ring assembly. Background technique [0002] Such as Figure 1-3 As shown, the lock ring 3' is fitted on the steering mandrel 1' through the tolerance ring 2', and a groove 31' is provided on the outer surface of the lock ring 3'. After parking, the driver can insert the lock pin 4' into the groove 31' to lock the steering mandrel 1' so that it cannot rotate, thereby preventing theft. [0003] However, the cooperation of the locking ring and the tolerance ring in the above scheme has the following defects: [0004] Since the matching areas of the tolerance ring and the lock ring, and the lock ring and the lock pin overlap along the radial direction of the lock ring, the thickness of the tolerance ring and the lock ring in the radial direction is relatively thick (the thick...

AI Technical Summary

Problems solved by technology

In some models, the gap between the steering mandrel and the inner sleeve is small (the gap is less than 4mm), which makes it impossible to use the lock ring and tolerance ring of the above scheme.

[0005] If the lock ring and the tolerance ring of the above scheme are matched on the steering mandrel, when the steering mandrel collapses, the gap between the steering mandrel and the inner sleeve is smaller than the thickness of the tolerance ring and the lock ring, resulting in The time-retracting lock ring cannot enter the inner sleeve, preventing the crushing function of the steering spindle

[0006] If the thickness of the tolerance ring and the lock ring is directly reduced, the strength or hardness of the lock ring will be insufficient, and the locking function of the steering mandrel cannot be realized

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