Steering Column Quick Release Bolt for Controlled Collapse
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Solution Overview
Problem
Existing steering column systems for vehicles lack efficient mechanisms for adjusting and collapsing during impact situations, relying on capsules that may not consistently release the steering column from the vehicle, potentially leading to inadequate protection for drivers in crashes.
Innovation Solution
A steering column assembly with a locking bracket and quick release bolts that allow adjustable movement of the steering column, including telescoping and raking adjustments, and a locking member that can be moved between locking and unlocking positions, along with an energy-absorbing device to dissipate impact forces, and sensors to control the release mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If capsule-based release mechanisms are used to allow steering column collapse during impact, then the steering column can be released from the vehicle, but the release mechanism shows variability and may not consistently release the steering column
Solution Approach 1:
The patent replaces the capsule-based mechanical release mechanism with an electronic control system. Sensors detect impact conditions and trigger an electronic latch release mechanism, eliminating the variability inherent in capsule-based systems. The electronic control provides consistent, predictable release behavior through programmed response to sensor inputs.
Solution Approach 2:
The steering column assembly incorporates sensors that automatically detect impact conditions and trigger the release mechanism without requiring manual intervention. The system self-activates upon detecting crash parameters, ensuring consistent release behavior based on objective sensor data rather than variable capsule performance.
2Object-affected harmful factors
If the steering column is fixed rigidly to the vehicle, then structural stability is maintained, but the steering column cannot collapse to protect the driver during impact
Solution Approach 1:
The patent implements a dynamic fixation system where the steering column transitions from a locked, stable state during normal operation to an unlocked, collapsible state during impact. The electronic latch mechanism maintains structural stability through electrical engagement while allowing controlled collapse when triggered, adapting the connection state based on operational conditions.
Solution Approach 2:
The steering column assembly is segmented into separable components with independent functionality. The locking bracket and quick release bolts create distinct engagement zones that can be selectively activated or deactivated. This segmentation allows the column to maintain stability when locked while enabling controlled collapse when the latch releases, providing both structural integrity and impact protection.
3Ease of operation
If quick release bolts are used to selectively fix the locking bracket, then controlled release is enabled, but the bolts must be divisible into portions to allow collapsing movement
Solution Approach 1:
The quick release bolt is designed as a segmented component with a main body and a separable portion. This segmentation allows the bolt to function as a complete fastening element during normal operation, then divide into portions to enable collapsing movement when released. The divided structure provides controlled release functionality while maintaining ease of operation through the electronic trigger mechanism.
Data Source
AI summary
The invention provides a steering column assembly for a vehicle. The steering column assembly includes a steering column operable to adjustably support a steering wheel in the vehicle. The steering column assembly also includes a locking bracket adjacent to the steering column and moveable along a path for collapsing movement. The steering column assembly also includes a locking member supported in two-way movement by the locking bracket between a first position and a second position spaced from one another. In the first position, the locking member locks the locking bracket and the steering column member together. When the locking member is in the second position, the steering column member is moveable relative to the locking bracket. The steering column assembly also includes at least one quick release bolt engaged with the locking bracket to selectively fix the locking bracket with respect to the vehicle. The at least one quick release bolt is selectively divisible into at least two portions independently of the collapsing movement of the locking bracket along the path.