Pivoting Flap Buckle Component for Secure Belt Clamping

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Solution Overview

Problem

Existing buckle components with a slidably mounted clamping bar allow belts to loosen unintentionally when tension is released, requiring a separate component to prevent slipping, which can be lost.

Innovation Solution

A pivotably mounted flap with a clamping surface is integrated into the buckle component, securing the belt between the clamping surface and the clamping bar, and optionally locked in place, ensuring firm clamping even when tension is released.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a slidably mounted clamping bar is used to allow rapid belt adjustment, then the ease of operation is improved, but the reliability deteriorates because the belt loosens unintentionally when tension is released

Engineering Contradiction:
Improvebelt adjustment speedVSAvoidbelt clamping stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The invention combines the rapid adjustment function of the slidable clamping bar with the security function of a pivotably mounted flap into a single integrated buckle component. The flap is attached to the base body and works together with the clamping bar to provide both quick adjustment and reliable belt retention without requiring separate components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The flap is positioned in advance to cover and secure the belt after adjustment. When the clamping bar is moved to adjust the belt, the flap is already in place to subsequently secure the belt position, preventing unintentional loosening before it can occur.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If a separate component is added to prevent belt slipping, then the reliability is improved, but the device complexity increases and the component can be lost

Engineering Contradiction:
Improvebelt retentionVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The security flap is integrated directly into the buckle component structure, eliminating the need for separate security components. The flap is pivotably mounted on the base body and works in conjunction with the clamping bar, reducing the total number of parts while maintaining reliable belt retention.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The flap serves multiple functions: it secures the belt after adjustment, prevents unintentional loosening, and works together with the clamping bar mechanism. This multi-functionality reduces the need for additional specialized components.

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

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 integrated flap securely clamps the belt, preventing unintentional adjustment and slipping, eliminating the need for a separate component and reducing the risk of loss.

Implementation Method 1

a flap (8) which is pivotably mounted on the base body (3) by means of a pivot joint (9)

Methodology Applied
Scientific EffectRotation:

Implementation Method 2

the flap (8) has a clamping surface (10) for clamping the belt (6) between the clamping surface (10) of the flap (8) and the clamping bar (4)

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4042897B1Buckle component
Publication Date: 2025.10.15 ABA HORTNAGL
  • EP4042897B1 patent drawingFigure 1~2
  • EP4042897B1 patent drawingFigure 3~5
  • EP4042897B1 patent drawingFigure 6~7

AI summary

Buckle component (1, 2) with a base body (3) and a clamping bar (4), wherein the base body (3) has a belt receiving opening (5) and the clamping bar (4) is slidably mounted on the base body (3) in the belt receiving opening (5) for clamping a belt (6) guided around the clamping bar (4) between the clamping bar (4) and an edge (7) of the base body (3) that defines the belt receiving opening (5), wherein the buckle component (1, 2) additionally has a flap (8) which is pivotably mounted on the base body (3) by means of a pivot joint (9), wherein the flap (8) has a clamping surface (10) for clamping the belt (6) between the clamping surface (10) of the flap (8) and the clamping bar (4) in a clamping position of the flap (8).