Smartphone Middle Frame Welding Structure for Faster Production

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Solution Overview

Problem

The existing process of producing stainless steel middle frames for smartphones using CNC machines is time-consuming due to the complexity of creating an integrally formed frame.

Innovation Solution

A middle frame design comprising a middle plate, middle elements, welding platforms, and an outer frame, where the middle elements are fixedly connected to the middle plate, and the welding platforms are connected to the outer frame, allowing for simpler production and enhanced strength, with optional features like embedded connections and heat insulation gaps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If an integrally formed middle frame is produced using CNC machine, then the middle frame has high strength and good texture, but the production time is relatively long

Engineering Contradiction:
Improvemiddle frame strengthVSAvoidproduction time
Core Design Contradiction:
StrengthVSLoss of time

Solution Approach 1:

The middle frame is divided into multiple separate components (middle plate, outer frame, middle elements, welding platforms) that are manufactured independently and then assembled through welding. This segmentation allows each component to be produced separately, significantly reducing the overall production time while maintaining structural integrity through proper welding connections.

Inventive Principle:
Principle #1Segmentation

2Productivity

If the middle frame is divided into multiple components for production, then the production time is reduced, but the structural complexity increases

Engineering Contradiction:
Improveproduction efficiencyVSAvoidstructural complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

Multiple components (middle plate, outer frame, middle elements, welding platforms) are merged through welding connections to form an integrated middle frame structure. The welding platforms serve as connection interfaces that facilitate the merging of components, ensuring structural integrity while allowing for simplified individual component manufacturing.

Inventive Principle:
Principle #5Merging (Combining)

3Strength

If the outer frame and middle plate are fully connected, then the structural strength is improved, but the heat insulation performance deteriorates

Engineering Contradiction:
Improvestructural strengthVSAvoidheat conduction
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The welding platforms serve as intermediary elements between the outer frame and middle plate. These platforms provide controlled connection points that maintain structural strength while limiting direct thermal contact between the middle plate and outer frame, thereby reducing heat conduction while preserving mechanical integrity.

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

This design simplifies the production process, reduces time consumption, and provides improved strength and heat insulation, while maintaining good support and buffer performance.

Implementation Method 1

the at least one welding platform on the outer frame is in welded connection with the at least one middle element on the middle plate

Methodology Applied
Scientific EffectWelding: Welding

Implementation Method 2

Although the middle plate conducts heat to the outer frame through the second end of the at least one welding platform and the second end of the at least one middle element

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 3

the gap between the outer frame and the middle plate can achieve a heat insulation effect

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS11336761B2Middle frame and terminal device
Publication Date: 2022.05.17 HUAWEI TECH CO LTD
  • US11336761B2 patent drawing
  • US11336761B2 patent drawing
  • US11336761B2 patent drawing

AI summary

Embodiments of this application describe a middle frame and a terminal device, where the middle frame includes a middle plate, at least one middle element, at least one welding platform, and an outer frame. The at least one middle element is fixedly connected to an edge of the middle plate, and the at least one welding platform is fixedly connected to an inner side of the outer frame. Further, the at least one welding platform on the outer frame is in welded connection with the at least one middle element on the middle plate.