Telescopic Rod Guide Roller Chain Stabilization
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Solution Overview
Problem
Existing telescopic rods with pressure-resistant chains lack adequate stabilization, leading to kinking and reduced extension length, particularly in applications requiring additional safety.
Innovation Solution
A telescopic rod design featuring guide rollers on a linear chain with support and guide elements on both sides of the telescopic elements, ensuring the chain is supported over its entire extension length, reducing bending forces and increasing stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the chain is guided only in one area with support rollers, then the structure is simpler, but the chain lacks adequate stabilization over the entire length and may kink
Solution Approach 1:
The guide structure is divided into multiple segments: support rollers in the lower area and guide bodies in the upper area, with each segment providing guidance at specific locations along the chain's path. This segmentation allows adequate stabilization without requiring continuous complex guidance throughout the entire chain length.
Solution Approach 2:
The patent transitions from one-sided guidance to two-sided guidance by providing support rollers and guide bodies on opposite sides of the chain. This dimensional change enhances stabilization by constraining the chain from both left and right sides, preventing kinking and improving reliability.
2Length of moving object
If the telescopic rod is extended to increase working height, then the extension length increases, but the chain experiences higher bending forces and reduced stability
Solution Approach 1:
The guide bodies are positioned in advance at the upper area of the telescopic rod to provide early guidance and support to the chain before it reaches the maximum extension position. This preliminary action prevents the chain from bending under its own weight and reduces the bending forces that would otherwise occur during full extension.
Solution Approach 2:
The guide bodies act as intermediary elements between the chain and the telescopic rod structure. These guide bodies mediate the interaction by providing continuous support and guidance to the chain throughout the extension process, reducing the direct bending forces transmitted to the chain when the rod is fully extended.
3Stability of the object's composition
If support and guide elements are provided on both sides of the telescopic elements, then the chain is significantly stabilized and bending forces are reduced, but the device complexity increases
Solution Approach 1:
The patent merges the functions of support and guidance into unified elements: the guide bodies simultaneously provide both support and guidance functions, and the support rollers are integrated with the telescopic rod structure. This merging reduces the number of separate components needed while achieving the desired stability.
Solution Approach 2:
The guide bodies and support rollers are designed to perform multiple functions: they guide the chain, support the chain, prevent kinking, and reduce bending forces. This multi-functionality allows a single element to address multiple stability concerns, reducing the overall complexity compared to having separate dedicated components for each function.
Data Source
AI summary
The invention relates to a telescopic rod [1] comprising at least two telescopic elements [2, 3, 4], which are arranged one inside the other in a rest position and can be moved into an extended position by means of a push chain [5] arranged inside the telescopic elements [3 or 4], wherein guide rollers [articulated rollers 6] are provided on the push chain [5]. Here, support and/or guide elements [e.g., the webs 7, 7', 8, 8', 9, 9'] are provided opposite each other on the inner wall of each telescopic element [2, 3, 4], which guide the guide rollers [6] of the push chain [5] from two sides over the entire extension length of the telescopic rod [1].