Female Weatherstrip Clip With Visible Locking and Spring-Back Assembly

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Solution Overview

Problem

Existing weatherstrip assembly methods in the automotive sector lack visibility during mounting, leading to reduced sealing effectiveness and quality due to non-fixed strips, and existing solutions do not provide easy and full assembly without causing deformation to the weatherstrip.

Innovation Solution

A female clip designed for easy assembly by mounting on a connector within the weatherstrip and passing to a pin on the vehicle body, featuring a thermoplastic material construction with specific prong structures for secure locking and spring-back mechanisms to ensure full fixing without deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional male clip-female part assembly method is used, then the weatherstrip can be assembled to the vehicle body, but the operator cannot see whether the mounting has been carried out correctly and non-fixed strips cause loss of sealing effect

Engineering Contradiction:
Improvesealing effectivenessVSAvoidmounting visibility
Core Design Contradiction:
ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The female clip is designed with a visible color that contrasts with the weatherstrip and vehicle body, allowing the operator to see when the clip is properly mounted and the weatherstrip is securely fixed. This visual indicator resolves the contradiction by making the mounting status detectable while maintaining sealing effectiveness.

Inventive Principle:
Principle #32Color changes

2Ease of operation

If existing clip designs are used, then the weatherstrip can be fixed to the vehicle, but the assembly process is not easy and may cause deformation such as scratches or tears on the weatherstrip

Engineering Contradiction:
Improveassembly easeVSAvoidweatherstrip integrity
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The female clip is designed with flexible prongs that can elastically deform during assembly to engage with the connector, then spring back to lock securely. This flexibility allows easy assembly without requiring excessive force that could damage the weatherstrip, resolving the contradiction between assembly ease and weatherstrip integrity.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The female clip acts as an intermediary component between the weatherstrip connector and the vehicle body pin. It provides a controlled engagement mechanism that distributes assembly forces evenly, preventing direct contact that could cause scratches or tears while maintaining secure fixation.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Strength

If the female clip uses rigid structure for secure locking, then the fixing strength is improved, but the assembly process becomes more difficult and may cause deformation

Engineering Contradiction:
Improvefixing strengthVSAvoidassembly difficulty
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The female clip incorporates dynamic elements with prongs that can elastically deform during assembly. The prongs bend to allow insertion, then spring back to create a secure locking force. This dynamic behavior provides strong fixation while maintaining ease of assembly, resolving the contradiction between strength and operational ease.

Inventive Principle:
Principle #15Dynamics

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 female clip ensures complete fixing of weatherstrips, enhancing sealing against water, air, and dust while allowing for easy assembly and replacement, maintaining the integrity and appearance of the vehicle surfaces.

Implementation Method 1

comprises a spring element (310) having a longitudinal axis extending between an open end and a closed end

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3790752B1A female clip for the assembly of weatherstrips
Publication Date: 2023.07.19 STANDARD PROFIL OTOMOTIV SANAYI & TICARET AS
  • EP3790752B1 patent drawingFigure 1a~1b
  • EP3790752B1 patent drawingFigure 2a~2b
  • EP3790752B1 patent drawingFigure 3a~3b

AI summary

The invention relates to a female clip (30) for the assembly of weatherstrips used in automotive sector to prevent the entry of water, air, sound, dust into vehicles. The female clip (30) enables the weatherstrip fully fixed to the vehicle, by mounting on a connector (20) preinjected in a rubber-based injection compound (10) of the weatherstrip and then passing to a pin (50) spot welded to a vehicle body (40).