Rotary Shaft Link Assembly With Uniform Support and Guide Faces

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Solution Overview

Problem

Conventional rotary shaft structures in electronic devices suffer from poor operational smoothness and limited rotational freedom due to complex connections without a locating mechanism, leading to loosening and unstable rotation.

Innovation Solution

A uniform distribution support structure for rotary shaft link assemblies, featuring side-by-side connection members with hollow sections and spacer shaft rods, utilizing flexible support members with guide faces to stabilize and maintain fixed intervals during rotation, and a synchronous rotational assembly with toothed rings for synchronized pivoting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If multiple rotary shafts are disposed on two sides of pivoted sections to improve supporting strength, then the strength of supporting structure is improved, but the coordination between rotary shafts is poor and rotational freeness is limited

Engineering Contradiction:
Improvesupporting strengthVSAvoidrotational freeness
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The invention divides the rotary shaft assembly into multiple independent connection members (first connection member, second connection member, third connection member) that can rotate independently around separate pivot pins. Each connection member acts as an independent rotational unit, eliminating the coordination problems between shafts while maintaining supporting strength through the distributed arrangement of multiple connection members.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If complicated structures are used to connect components in conventional rotary shaft structures, then connection is achieved, but the pivotally connected sections loosen and swing and cannot rotate smoothly

Engineering Contradiction:
Improveconnection capabilityVSAvoidrotation stability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The invention introduces a buffer member as an intermediary component between the connection members. The buffer member absorbs external forces and impacts, preventing direct transmission of forces that would cause loosening and swinging. This intermediary element maintains stable rotation by decoupling the connection between pivot pins and connection members, allowing smooth rotation while maintaining secure connection.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 ensures stable and smooth pivotal rotation of electronic device components by maintaining fixed intervals and absorbing external forces, preventing loosening and improving operational smoothness.

Implementation Method 1

When the support member is forcedly bent, the connection members are driven to pivotally rotate and displace

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11280369B2Uniform distribution support structure of rotary shaft link assembly
Publication Date: 2022.03.22 FIRST DOME
  • US11280369B2 patent drawing
  • US11280369B2 patent drawing
  • US11280369B2 patent drawing

AI summary

A uniform distribution support structure of rotary shaft link assembly includes a rotary shaft assembly and a support assembly. The rotary shaft assembly has multiple connection members. Each connection member is formed with a hollow section and a perforation. A guide face is disposed in each hollow section. A spacer shaft rod is disposed between each two adjacent connection members. Each spacer shaft rod is formed with a through hole. A guide arched face is disposed in each through hole. The support assembly has a support member and a lateral support member passing through the through holes and the hollow sections. Multiple opposite guide arched faces are disposed on the support member. Multiple opposite guide faces are disposed on the lateral support member. The guide faces and the guide arched faces respectively abut against the opposite guide faces and the opposite guide arched faces.