Ignition Lock Steering Column Assembly Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle ignition lock systems lack a compact and efficient mechanism to securely lock the steering column and integrate with the ignition switch, often requiring external solenoids and complex detent mechanisms, which can complicate manufacturing and increase costs.
Innovation Solution
A lock device with a movable carrier pin and post system, coupled with a solenoid assembly integrated into the housing, allows for axial sliding and rotational movement to control the lockbolt's engagement with the steering member, using detents and springs to define operational positions and prevent key removal when the transmission is not in 'PARK', eliminating the need for external solenoid housings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external solenoids and complex detent mechanisms are used to lock the steering column, then the locking reliability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the steering column lock mechanism and ignition switch into a single integrated assembly. The lockbolt, carrier, carrier pin, and driver are merged into one cohesive unit where the ignition key operation directly controls the locking mechanism through integrated detents and springs, eliminating the need for separate external solenoids and complex detent mechanisms while maintaining reliable locking functionality.
2Extent of automation
If external solenoid housings are used, then the solenoid function is achieved, but the construction complexity and cost increase
Solution Approach 1:
The patent extracts and eliminates the external solenoid housing from the design. Instead of using a separate solenoid assembly, the invention employs direct mechanical linkage through the driver, carrier pin, and lockbolt mechanism that is activated by the ignition key operation itself, achieving the required automated locking function without the complexity of external solenoid housings.
3Volume of moving object
If a compact lock mechanism is used, then the space efficiency is improved, but the locking reliability may be compromised
Solution Approach 1:
The patent employs a nested arrangement where the lockbolt is received within the steering column housing, the carrier surrounds the lockbolt, and the driver operates within the key cylinder assembly. This nested configuration achieves compact space utilization while maintaining reliable locking through the interlocking engagement of the lockbolt with the steering column and the carrier pin with the driver detents.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a compact, efficient, and cost-effective ignition lock steering column system that securely locks the steering column, integrates with the ignition switch, and simplifies construction by eliminating the need for external solenoid housings, while ensuring key security and operational reliability.
Implementation Method 1
A carrier pin is supported by the carrier and is movable from an extended position to a retracted position against a biasing member
Implementation Method 2
The driver is formed with detents engageable with a resilient member to positively define three separate operational positions of the lock device
Data Source
AI summary
An ignition lock steering column lock includes a locking unit of the type having a lockbolt, a lockbolt carrier, and a spring-biased carrier pin engageable by a post slidably provided on a rotatable driver. The carrier pin is positioned on a steering column side of the driver. The operational positions of the lock are provided by detents formed on the driver.