Telescopic Rod Rotary Joint With Separated Pivot and Locking Points
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Solution Overview
Problem
Conventional rotary joints for telescopic rods face issues with high-load bearing due to the pivot points and locking mechanisms being located at the same position, leading to loosening under heavy loads and limited angle adjustment precision.
Innovation Solution
A rotary joint design featuring a base and support base with pivot plates and a screwing member that allows for independent rotation and angle adjustment of the support pipe, with the pivot point distinct from the clamping and fixing position, enabling higher load-bearing capacity and precise angle adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pivot point and locking mechanism are located at the same position in a conventional rotary joint, then the structure is simple, but the locking mechanism cannot bear high loads and may loosen under heavy weights
Solution Approach 1:
The rotary joint is divided into separate functional components: a pivot plate assembly for rotation and a locking assembly with a screwing member for load-bearing fixation. This segmentation allows each component to optimize its function independently, resolving the contradiction between structural simplicity and load-bearing capacity.
Solution Approach 2:
The locking function is extracted from the pivot point location and implemented through a separate screwing member that penetrates through the pivot plates. This extraction allows the pivot point to remain simple while the locking mechanism provides high load-bearing capacity through the distributed clamping force of the screwing member.
2Strength
If a sawtooth-shaped anti-sliding structure is used to prevent loosening under heavy loads, then load-bearing capacity is improved, but angle adjustment precision deteriorates due to minimum angle adjustment limitations and tooth breakage
Solution Approach 1:
A guide groove is introduced as an intermediary element between the pivot plates, working in conjunction with the screwing member. The guide groove provides continuous guidance during rotation while the screwing member provides locking force, eliminating the need for discrete sawtooth structures and enabling precise angle adjustment without tooth breakage.
3Strength
If the pivot point is separated from the clamping and fixing position of the screwing member, then load-bearing capacity is improved, but device complexity increases
Solution Approach 1:
The pivot plate assembly and locking assembly are merged into an integrated structure where the guide groove and screwing member work together. This merging achieves high load-bearing capacity through the separated pivot and locking points while maintaining relatively simple overall structure through the unified design of the pivot plates.
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 design allows for secure attachment and adjustment of heavier devices without falling, providing a higher load-bearing capacity and enabling precise angle adjustments, while also allowing for independent maintenance and cost reduction.
Implementation Method 1
The screwing member penetrates through the through hole and the guide groove to clamp and fix the first pivot plate and the second pivot plate, so that the first pivot plate and the second pivot plate cannot rotate relatively.
Implementation Method 2
The screwing member penetrates through the through hole and the guide groove to clamp and fix the first pivot plate and the second pivot plate
Data Source
AI summary
The present invention provides a rotary joint of a telescopic rod for connecting a bottom pipe and a support pipe, which comprises a base, a support base and a screwing member. The base comprises a first clamp for clamping the bottom pipe and a first pivot plate, and the first pivot plate comprises a guide groove. The support base comprises a second clamp for clamping the support pipe and a second pivot plate, wherein the second pivot plate comprises a through hole, the first pivot plate and the second pivot plate are pivoted together at a pivot point, and when the first pivot plate and the second pivot plate rotate relatively, the through hole is kept to align to the guide groove. The screwing member penetrates through the through hole and the guide groove to clamp and fix the first pivot plate and the second pivot plate.