Steering Column Locking Cam with Energy Absorbing Strap
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional locking devices for steering columns require complex manufacturing processes and are limited to specific applications, making them inefficient for varied steering column assemblies and energy absorption in crash scenarios.
Innovation Solution
A locking device with an operating lever, actuating body, locking cam, and energy-absorbing strap that allows for adjustable locking and unlocking, enabling telescope direction adjustment and energy absorption during impacts, featuring a sub-assembly design for simplified components and off-line assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional locking devices are used in steering columns, then the locking function is achieved, but the manufacturing process becomes complex and the application scope is limited
Solution Approach 1:
The locking device is divided into separate modular components: a locking cam assembly with locking teeth, an actuating body, and a locking strap with segment teeth. This segmentation allows each component to be manufactured independently using simpler processes and enables recombination for different steering column applications, reducing overall manufacturing complexity while maintaining the locking function.
Solution Approach 2:
The locking cam assembly is designed as a universal component that can be applied to multiple steering column configurations. The standardized locking teeth and segment teeth interface allow the same locking device to function across different steering column designs, expanding application scope without increasing manufacturing complexity.
2Reliability
If traditional locking devices are used, then the locking function is provided, but the components cannot be reused across varying steering column assemblies
Solution Approach 1:
The locking cam assembly features standardized locking teeth that interface with segment teeth on the locking strap, creating a universal connection mechanism. This design allows the same locking device to be installed on various steering column assemblies with different configurations, enabling component reuse across multiple applications while maintaining reliable locking functionality.
Solution Approach 2:
By segmenting the locking device into standardized modular components, each part can be independently manufactured and then assembled for different steering column programs. The locking cam, actuating body, and locking strap can be configured for various applications without redesigning the entire system, enhancing versatility.
3Ease of manufacture
If a simple locking mechanism is used, then manufacturing is simplified, but the ability to absorb energy during crash scenarios is reduced
Solution Approach 1:
The locking cam assembly is designed to convert the harmful impact forces during a crash into beneficial energy absorption. The eccentric locking surface and engagement between locking teeth and segment teeth create controlled deformation and friction that dissipate crash energy, protecting the steering column while maintaining a relatively simple manufacturing process.
Solution Approach 2:
The locking mechanism incorporates dynamic elements that respond differently under normal operation versus crash conditions. During normal use, the locking teeth engage smoothly to provide stable locking. During a crash, the same components dynamically absorb energy through controlled engagement and deformation, enhancing safety without requiring complex additional structures.
Data Source
AI summary
A locking device for a steering column is provided. The locking device includes an operating lever configured to rotate between a first position and a second position, an actuating body configured to rotate in response to rotation of the operating lever and a locking cam operably connected to the actuating body and rotatable between a locked position and an unlocked position in response to rotation of the actuating body. The locking cam includes an eccentric locking surface having a plurality of locking teeth. A locking segment is positioned adjacent to the locking cam, the locking segment having a plurality of segment teeth formed thereon. A shaft extends along a first axis and the actuating body and locking cam are positioned on the shaft and configured to rotate about the first axis.