Foldable Hinge Swing Arm Segmentation for Easier Machining

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Solution Overview

Problem

Current rotating mechanisms in foldable electronic devices have a large number of components, leading to low machining efficiency and high costs due to their complex structure.

Innovation Solution

A rotating mechanism with detachable synchronization swing arms that can be machined using molds, reducing the need for complex CNC machining by allowing separate machining of individual components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If an integrated swing arm structure is used, then the rotating mechanism has fewer components, but the machining difficulty increases and machining efficiency decreases

Engineering Contradiction:
Improvestructure complexityVSAvoidmachining efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The swing arm is divided into a first swing arm and a second swing arm that are detachably connected. This segmentation allows each part to be machined separately using simple mold machining, avoiding the need for complex CNC machining of an integrated structure, thereby improving machining efficiency while maintaining structural functionality.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If an integrated swing arm structure is used, then the rotating mechanism has fewer components, but the machining cost increases

Engineering Contradiction:
Improvestructure complexityVSAvoidmachining cost
Core Design Contradiction:
Device complexityVSEase of manufacture

Solution Approach 1:

By segmenting the swing arm into detachable first and second swing arms, each component can be manufactured using simple and inexpensive mold machining processes rather than costly complex CNC machining, thereby reducing overall manufacturing costs while maintaining structural integrity.

Inventive Principle:
Principle #1Segmentation

3Productivity

If the first swing arm and second swing arm are detachably connected, then machining efficiency improves, but the device has more components

Engineering Contradiction:
Improvemachining efficiencyVSAvoidnumber of components
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The swing arm is segmented into two detachably connected parts, which increases the number of components but enables simple mold machining for each part, significantly improving machining efficiency. The segmentation allows parallel manufacturing and simplifies the machining process for each individual component.

Inventive Principle:
Principle #1Segmentation

4Manufacturing precision

If detachable swing arms are used, then machining precision improves, but the assembly complexity increases

Engineering Contradiction:
Improvemachining precisionVSAvoidassembly complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

Segmenting the swing arm into detachable first and second swing arms allows each part to be machined with high precision using simple mold processes. The detachable connection design incorporates positioning structures that ensure accurate reassembly, maintaining manufacturing precision while enabling simpler machining processes.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20260093291A1Rotating Mechanism and Foldable Electronic Device
Publication Date: 2026.04.02 HONOR DEVICE CO LTD
  • US20260093291A1 patent drawing
  • US20260093291A1 patent drawing
  • US20260093291A1 patent drawing

AI summary

This disclosure provides a rotating mechanism and a foldable electronic device. The rotating mechanism includes a bearing base, a first synchronization swing arm, and a second synchronization swing arm. The first synchronization swing arm includes a first swing arm and a second swing arm, and the first swing arm is detachably connected to the second swing arm; the first swing arm includes a first swing body, a first connecting body, and a first screw that are sequentially connected in a width direction of the rotating mechanism; the first screw is rotatably connected to the bearing base; the second swing arm includes a second swing body, a second connecting body, and a second screw that are sequentially connected in the width direction of the rotating mechanism; and the second screw is rotatably connected to the bearing base.