Rotary Shaft Link Assembly Shielding for Oil Leakage Reduction

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Solution Overview

Problem

Conventional rotary shaft structures in electronic devices suffer from poor operational smoothness and increased powder and oil leakage due to exposed connection sections, which lead to contamination during opening and closing rotations.

Innovation Solution

A rotary shaft link assembly structure featuring connection members with hollow sections that shield part of the synchronous rotational assembly, utilizing a pivot shaft assembly and toothed ring assembly with elastic deformation sections to ensure smooth rotation and reduce friction-related issues, while spacer shaft rods and arched channels facilitate smooth operation and protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the connection sections of the rotary shaft assembly are directly exposed to the outer side, then the structure is simple and easy to manufacture, but the powder and oil leakage directly contaminates the environment

Engineering Contradiction:

Improvestructural simplicityVSAvoidenvironmental contamination

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The connection members are nested within the hollow sections of the connection members of the rotary shaft assembly, creating a protective enclosure that shields the connection sections from the external environment while maintaining structural integrity and reducing powder and oil leakage contamination

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The hollow sections of the connection members act as protective shells that enclose the connection sections of the rotary shaft assembly, providing a barrier against environmental contamination from powder and oil leakage while allowing the mechanism to operate smoothly

Inventive Principle:

Principle #30Flexible shells and thin films

2Strength

If two sets of rotary shafts are disposed on two sides of the pivoted sections, then the supporting structure strength is improved, but the coordination between rotary shafts is not ideal and rotational freeness is limited

Engineering Contradiction:

Improvesupporting structure strengthVSAvoidrotational smoothness

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The rotary shaft assembly is segmented into multiple connection members arranged side-by-side, with each connection member having hollow sections that allow the synchronous rotational assembly to pass through, enabling better coordination and rotational freedom while maintaining structural strength through the distributed arrangement

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connection members are arranged in a side-by-side configuration rather than traditional vertical stacking, allowing the synchronous rotational assembly to pass through the hollow sections and rotate more freely, improving coordination between the rotary shafts while maintaining supporting structure strength

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Object-affected harmful factors

If the connection members shield part of the synchronous rotational assembly, then the protection effect is improved and powder and oil leakage is reduced, but the device complexity increases

Engineering Contradiction:

Improvepowder and oil leakageVSAvoidassembly structure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The connection members serve multiple functions: they provide structural support, enable rotation through their hollow sections, and shield the connection sections of the rotary shaft assembly from environmental contamination. This multi-functionality reduces the need for additional protective components, thereby limiting the increase in device complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The protective function is merged into the connection members themselves by designing them with hollow sections that enclose the connection sections of the rotary shaft assembly. This integration eliminates the need for separate protective shields or covers, reducing overall structural complexity while providing effective protection against powder and oil leakage

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11573610B2Rotary shaft link assembly structure

Publication Date: 2023.02.07 FIRST DOME

AI summary

A rotary shaft link assembly structure is connected between a first support and a second support of two articles. The rotary shaft link assembly structure has a rotary shaft assembly and at least one synchronous rotational assembly. The rotary shaft assembly has multiple connection members side-by-side disposed between the first and second supports. Each connection member is correspondingly formed with at least one hollow section. The synchronous rotational assembly passes through the hollow sections of the connection members to respectively connect with the first and second supports, whereby the connection members are transversely serially connected to drivingly bend and connect along with the synchronous rotational assembly. The connection members respectively shield a part of the synchronous rotational assembly to provide a protection effect and reduce the dropped powder and oil leakage caused by the friction.