Telescopic Cylinder Joint Locking Structure Against Rotational Loosening

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Solution Overview

Problem

Existing telescopic cylinders face issues with joint loosening due to strong rotational forces, difficulty in maintaining structural integrity, and challenges in modifying internal structures to enhance strength, leading to potential detachment and safety concerns during somatosensory device operations.

Innovation Solution

A joint structure for telescopic cylinders comprising a telescopic unit, extension unit, and fixing units with interlocking mechanisms, including internal and external threads, clamping structures, and buffer members to stabilize and reinforce the connections, preventing loosening and detachment under external forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If common fastening rings are used to fasten the Y-shaped joint, then the joint can be initially secured, but the joint loosens and falls off under strong rotational forces during somatosensory motions

Engineering Contradiction:

Improvejoint fastening reliabilityVSAvoidresistance to rotational force

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent applies preliminary action by pre-installing a locking structure (locking collar or locking nut) on the telescopic rod before the joint is subjected to rotational forces. This locking structure is positioned in advance to engage with the Y-shaped joint, creating a pre-loaded fastening state that prevents loosening before it can occur during operation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements beforehand cushioning by incorporating a buffer mechanism (such as a buffer spring or damping element) between the joint and the fastening structure. This buffer absorbs and dissipates the impact of strong rotational forces before they can cause the joint to loosen, providing protective cushioning in advance of the actual loosening event.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Strength

If the telescopic cylinder structure is strengthened by adding fastening structures, then structural integrity improves, but the internal space becomes constrained and modification becomes difficult

Engineering Contradiction:

Improvestructural integrityVSAvoidinternal structure modification ease

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The patent applies segmentation by dividing the telescopic cylinder into modular sections with standardized interfaces. The fastening structures are designed as separate, interchangeable modules that can be attached or removed without affecting the overall structural integrity. This modular approach allows maintenance personnel to modify or replace specific components independently while maintaining the strength of the complete assembly.

Inventive Principle:

Principle #1Segmentation

3Reliability

If the telescopic rod and spiral sleeve connection is reinforced, then loosening under external force is prevented, but the device complexity increases

Engineering Contradiction:

Improveconnection stabilityVSAvoidfastening structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple functions into a single integrated fastening structure. The locking mechanism is combined with the telescopic rod's existing threading system, and the buffer mechanism is integrated into the same assembly. This consolidation provides both anti-loosening and shock-absorbing functions through a unified structure, reducing the number of separate components and simplifying the overall device complexity.

Inventive Principle:

Principle #5Merging (Combining)

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 proposed joint structure effectively stabilizes the telescopic cylinder joints, enhances structural strength, and ensures safety by preventing loosening and detachment, even under strong rotational forces, thus ensuring the integrity and longevity of the somatosensory device.

Implementation Method 1

the first fixing body is simultaneously arranged in the first fixing structure and the second fixing structure and interferes with the first main body and the second main body so as to prevent the first combined structure and the second combined structure from spiral movement

Methodology Applied

Scientific EffectMechanical interference: Mechanical Force

Implementation Method 2

clamping structures, and buffer members to stabilize and reinforce the connections, preventing loosening and detachment under external forces

Methodology Applied

Scientific EffectClamping force: Mechanical Force

Data Source

PatentUS12361840B2Joint structure of telescopic cylinder

Publication Date: 2025.07.15 BROGENT TECH

AI summary

A joint structure of a telescopic cylinder includes a telescopic unit, an extension unit and a first fixing unit. The telescopic unit includes a first main body, a first combined structure and at least one first fixing structure. The extension unit includes a second main body, a second combined structure and at least one second fixing structure. The first combined structure is screwed to the second combined structure. The first fixing unit includes at least one first fixing body, and the first fixing body is simultaneously arranged in the first fixing structure and the second fixing structure and interferes with the first main body and the second main body so as to prevent the first combined structure and the second combined structure from spiral movement.