Buckle Bar Fastening via Plastic Deformation

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Solution Overview

Problem

The production process for buckle components is complex and inefficient, requiring sophisticated methods to securely fasten bars to frames within the buckle structure.

Innovation Solution

The bar is fastened to the frame through plastic deformation of the bar, fastening devices, or the frame using known mechanical or manual tools, such as cold forming, allowing for a cost-effective and simple attachment method.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional fastening methods are used to attach the bar to the frame, then the attachment is secure and reliable, but the production process becomes complex and inefficient

Engineering Contradiction:
Improveattachment securityVSAvoidproduction efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent changes the physical state and mechanical properties of the bar or frame material through plastic deformation. By applying cold forming or other deformation methods, the material undergoes permanent shape change that creates a secure mechanical interlock between the bar and frame, eliminating the need for complex traditional fastening methods while maintaining attachment reliability.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces traditional mechanical fastening systems (such as screws, clips, or separate fasteners) with a direct plastic deformation mechanism. The bar or frame itself is deformed to create the fastening function, substituting a multi-component mechanical fastening system with a simpler monolithic deformation-based attachment method that improves production efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If complex fastening methods are used to secure the bar, then the attachment reliability is high, but the manufacturing cost increases

Engineering Contradiction:
Improveattachment securityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the bar and frame into a more integrated structure through plastic deformation. The deformation process creates a unified attachment where the bar and frame become mechanically interlocked as a single functional unit, eliminating the need for separate fastening components and reducing manufacturing complexity and cost.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The bar or frame material itself serves the dual function of structural support and fastening mechanism. Through plastic deformation, the material creates its own attachment feature without requiring external fastening components, making the structure self-sufficient and reducing manufacturing costs.

Inventive Principle:
Principle #25Self-service

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 approach results in a cost-efficient and straightforward method for attaching the bar to the frame, ensuring a permanent fastening that allows the belt to be guided around the bar, while maintaining structural stability and versatility in material choice, including metals and composite materials.

Implementation Method 1

the bar is fastened to the frame by plastic deformation of the bar and/or of at least one of the fastening devices and/or of the frame

Methodology Applied
Scientific EffectPlastic deformation: Plasticity

Implementation Method 2

this is a simple cold forming method

Methodology Applied
Scientific EffectCold forming: Cold-forming

Data Source

PatentUS9770072B2Buckle component
Publication Date: 2017.09.26 ABA HORTNAGL
  • US9770072B2 patent drawing
  • US9770072B2 patent drawing
  • US9770072B2 patent drawing

AI summary

Buckle component (1) having a belt receiving opening (2) and a frame (3) enclosing the belt receiving opening (2), and a bar (4) about which the belt (5) is guidable, wherein the bar (4) is fastened to the frame (3), in a manner crossing, in particular completely crossing, the belt receiving opening (2), by at least one fastening device (6, 7) of the buckle component (1). The bar (4) is fastened to the frame by plastic deformation of the bar (4) and/or of at least one of the fastening devices (6, 7) and/or of the frame (3).