Plastic Clip With Elastic Fitting Piece For Stable Assembly

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Solution Overview

Problem

Conventional plastic clips with integrally formed clip bosses and detachable main bodies face difficulties in assembly and disassembly, leading to high assembly time, defects, and instability, resulting in low productivity, increased costs, and susceptibility to flowage and noise under external impacts.

Innovation Solution

The plastic clip design features a clip boss with fitting portions and locking projections, a clip main body with an inverted triangular input portion, locking projections, and an elastic fitting piece, which securely connects to the clip boss through a guided assembly process, utilizing elastic fitting pieces and support projecting portions to enhance stability and prevent flowage and noise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If a conventional plastic clip with detachable main body is used, then the clip can be disassembled for repair, but the assembly process is difficult and time-consuming leading to low productivity

Engineering Contradiction:
Improvedisassembly capabilityVSAvoidassembly speed
Core Design Contradiction:
Ease of repairVSProductivity

Solution Approach 1:

The clip main body is pre-formed with an inverted triangular input portion and elastic fitting pieces that are ready to engage with the clip boss. The guide hole and guide portion are pre-configured to automatically align and guide the assembly process, eliminating the need for complex alignment procedures during assembly and significantly improving productivity while maintaining disassembly capability.

Inventive Principle:
Principle #10Preliminary action

2Ease of repair

If a conventional plastic clip with detachable main body is used, then the clip can be disassembled, but assembly defects occur frequently causing low productivity and cost increase

Engineering Contradiction:
Improvedisassembly capabilityVSAvoidassembly quality
Core Design Contradiction:
Ease of repairVSManufacturing precision

Solution Approach 1:

The elastic fitting pieces act as intermediaries between the clip main body and clip boss, providing a forgiving interface that tolerates minor misalignments and variations. The inverted triangular input portion with guide features serves as an intermediary guiding mechanism that ensures proper alignment during assembly, reducing assembly defects while maintaining the ability to disassemble for repairs.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of repair

If a conventional plastic clip structure is used, then the clip main body can be detached, but the assembly state is unstable causing flowage and noise under external impact

Engineering Contradiction:
Improvedisassembly capabilityVSAvoidassembly stability
Core Design Contradiction:
Ease of repairVSStability of the object's composition

Solution Approach 1:

The elastic fitting pieces provide dynamic adaptability in the connection between clip main body and clip boss. They can deform elastically to accommodate external impacts and vibrations, maintaining a stable locked state under normal conditions while allowing controlled disassembly when needed. This dynamic mechanism prevents flowage and noise by ensuring consistent contact and positioning under various loading conditions.

Inventive Principle:
Principle #15Dynamics

4Ease of repair

If a conventional plastic clip is used, then the clip main body is detachable, but breakage occurs during assembly or disassembly reducing durability

Engineering Contradiction:
Improvedisassembly capabilityVSAvoiddurability
Core Design Contradiction:
Ease of repairVSDuration of action of stationary object

Solution Approach 1:

The elastic fitting pieces utilize material parameter changes through elastic deformation to enable safe assembly and disassembly. The material can temporarily deform to allow engagement and disengagement of the clip components without causing permanent damage or breakage. This controlled parameter change in the elastic material ensures durability while maintaining the detachable nature of the clip for repairs.

Inventive Principle:
Principle #35Parameter changes

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 facilitates easy and secure assembly, reduces noise and flowage under external impacts, improves assembly efficiency, and enhances durability and merchantability by ensuring stable attachment and easy disassembly without breakage.

Implementation Method 1

an elastic fitting piece provided in a lower end of the clip-boss input guide portion

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP2676848B1Plastic clip
Publication Date: 2017.08.30 NIFCO KOREA INC
  • EP2676848B1 patent drawingFigure 1~2
  • EP2676848B1 patent drawingFigure 3~4
  • EP2676848B1 patent drawingFigure 5~6a

AI summary

A plastic clip of the present invention includes a clip boss integrally formed in a fixed panel; and a clip main body detachably assembled to the clip boss. The clip boss includes fitting portions provided in two lower side portions of a vertical plate provided with a fitting hole; and locking projections provided in front and back upper ends of the fitting portions. The clip main body includes an inverted triangular input portion provided in a lower end portion; a locking projection provided in an upper end portion of the input portion; a clip-boss input guide hole provided in the center of an upper end; a clip-boss input guide portion provided in the center of an internal upper portion and connected to the clip-boss input guide hole; and an elastic fitting piece provided in a lower end of the clip-boss input guide portion.