A three-stage telescopic electric power steering column

By designing a three-section telescopic electrically adjustable steering column, and using a motor-driven helical gear and lead screw nut structure, long-distance adjustment and collapsible energy absorption are achieved, solving the problems of excessive size and insufficient installation space of traditional columns, and improving the overall vehicle compatibility and safety.

CN117657280BActive Publication Date: 2026-06-09BOSCH HUAYU STEERING SYSTEMS (YANTAI) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BOSCH HUAYU STEERING SYSTEMS (YANTAI) CO LTD
Filing Date
2022-08-26
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional two-stage electrically adjustable steering columns are too bulky to accommodate large travel, making them unsuitable for the vehicle's pre-reserved installation space, and they lack an effective energy-absorbing structure.

Method used

Design a three-section telescopic electrically adjustable steering column, which uses a motor to drive the three sections of the column to retract and extend simultaneously. Combined with a helical gear and lead screw nut structure, it can achieve long-distance axial adjustment and absorb impact force through an energy-absorbing band during impact.

Benefits of technology

It achieves the shortest possible total length of the tubing, a compact structure, good compatibility, meets the installation requirements of the entire vehicle, and has a collapsible energy absorption function to protect the driver's safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of steering column, in particular to a three-section telescopic electric adjusting steering column, which comprises an outer tube, an intermediate tube, an inner tube, a motor, a helical gear, a screw rod sleeve, a screw rod, a screw rod nut, a rivet and an energy absorption belt. Compared with the prior art, the three-section telescopic electric adjusting steering column is designed, one motor is used to realize the simultaneous contraction and elongation of the three-section column tube, the axial arrangement space of the column is saved, the column structure is compact, the matching of the steering column and the whole vehicle is better, the energy absorption structure is added, the structure is simple, the production cost is low, the collapse energy absorption of the whole vehicle demand is realized, and the stress requirement of the driver in the whole vehicle collision is met.
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