Adjustable rod features
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Solution Overview
Problem
Existing adjustable support rods lack sufficient locking force to prevent slippage between the inner and outer rods, and their end cap systems are often complex and difficult to construct.
Innovation Solution
The implementation of a lock mechanism featuring a wedge shaft, rod insert, and wedge, along with adjustable end cap assemblies that apply compressive force to enhance the locking force, utilizing an adjustment gap to ensure a tight friction fit between the rods and prevent unintentional shifting, and simplified end cap systems with dual-mount configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a lock mechanism is added to prevent slippage between rods, then the locking force is improved, but the device complexity increases
Solution Approach 1:
The lock mechanism is divided into separate functional components: an adjustable rod with external threading, a distinct lock mechanism with internal threading and a wedge member, and separate end cap assemblies. This segmentation allows each component to be optimized independently while working together to provide sufficient locking force through the threading engagement and wedge action.
Solution Approach 2:
The lock mechanism features nested components where the rod insert is received within the outer rod, and the wedge member is positioned within the lock mechanism housing. The end cap assemblies also nest over the rod ends, creating a compact integrated structure that provides robust locking without excessive external complexity.
2Force
If complicated end cap systems are used to secure rods, then the securing force is improved, but the ease of manufacture decreases
Solution Approach 1:
The end cap assemblies are designed as universal components that can be used on both ends of the adjustable rod system. Each end cap integrates multiple functions: it provides structural support, secures the rod end, and works with the lock mechanism to maintain positioning. This multi-functionality reduces the number of different parts needed and simplifies manufacturing while providing adequate securing force.
Solution Approach 2:
The end cap assemblies are designed to work in conjunction with the adjustable rod and lock mechanism without requiring additional complex fastening systems. The end caps utilize the existing threading and locking structures to secure themselves to the rod ends, eliminating the need for separate complicated mounting hardware and simplifying the overall construction process.
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 robust locking mechanism that prevents slippage between the rods and simplifies the construction of adjustable end cap systems, ensuring secure and stable positioning of the rods without requiring excessive manual force.
Implementation Method 1
a wedge member (26) positioned in the outer rod (14)... preventing slippage between the two rods
Implementation Method 2
a compression member (38) that applies compressive force to the rods
Data Source
AI summary
There is provided a lock mechanism for an adjustable rod. The lock mechanism provides a manually locking state and an automatic locking state. The automatic locking state provides a more secure locking engagement than the manual locking state. There is also provided improved end cap systems that minimize the number of components.