Adaptable Belt Buckle Mechanism for Dual Widths

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Solution Overview

Problem

Existing belt buckles are not conveniently adaptable to different belt widths, requiring complex mechanisms and actuators that complicate the adjustment process.

Innovation Solution

A belt buckle design featuring a bridge with two parts that can be actuated between stable positions to accommodate different belt widths, utilizing a mechanism with a main moving part, positioning pins, and a trigger guard that allows easy selection of width configurations without an independent actuator, facilitating belt passage through a rigid loop.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a belt buckle is designed to accommodate different belt widths, then adaptability is improved, but device complexity increases due to the need for adjustment mechanisms and actuators

Engineering Contradiction:
Improveadaptability to different belt widthsVSAvoidcomplexity of adjustment mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines the adjustment mechanism and the actuator into a single integrated component. The actuator itself performs the adjustment function by moving between positions that correspond to different belt width configurations, eliminating the need for separate adjustment mechanisms and reducing overall device complexity while maintaining adaptability

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The actuator is designed to serve multiple functions: it acts as both the actuating element and the adjustment mechanism. By moving between different positions, it simultaneously controls the configuration for different belt widths, making a single component perform what would traditionally require multiple separate elements

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If an independent actuator is added to enable width adjustment, then adaptability is improved, but ease of operation deteriorates due to additional components

Engineering Contradiction:
Improvewidth adjustment capabilityVSAvoidconvenience of width selection
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

By merging the actuator with the adjustment mechanism, the patent reduces the number of components the user must interact with. The user operates a single integrated actuator that directly controls the width configuration, simplifying the user interface and improving ease of operation compared to systems requiring separate adjustment mechanisms

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If a mechanism with multiple components is used for width adjustment, then adaptability is improved, but manufacturing complexity increases

Engineering Contradiction:
Improveconfiguration change capabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent reduces manufacturing complexity by combining multiple components into a single actuator element. This integration reduces the number of parts that need to be manufactured, assembled, and quality-checked, while still providing the capability for configuration changes between different belt widths

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The actuator is designed with distinct positional states that correspond to different belt width configurations. This segmentation of the actuator's movement into discrete positions allows for simplified manufacturing of each position while maintaining the overall adaptability of the system

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3949790B1Belt buckle that can be adapted to at least two widths of belt tape and belt comprising such a buckle
Publication Date: 2023.02.15 HERMES SELLIER (SOCIETE PAR ACTIONS SIMPLIFIEE)
  • EP3949790B1 patent drawingFigure 1~3
  • EP3949790B1 patent drawingFigure 4~6
  • EP3949790B1 patent drawingFigure 7~11

AI summary

The invention relates to a belt buckle (2), adaptable to at least two different widths (e1, e2) of belt tape (3), comprising a housing (4) and at least one bridge (5) formed of two parts (8, 9) which extend on either side of the housing, the belt buckle further comprising a mechanism housed at least in part in a cavity (23) of the housing and movable between at least a first stable position and a second stable position, said mechanism being configured to be moved by the actuation of at least one of the parts of the bridge relative to the other between a first configuration, corresponding to a first width (e1) of belt tape, and a second configuration, corresponding to a second width (e2) of belt tape.