Mechanical Fastening Apparatus for Impact-Resistant Logo Attachment
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Solution Overview
Problem
Existing methods for attaching logos, names, or emblems to products like purses, wallets, and hats using metal plates are unreliable due to adhesive failures and vulnerability to separation from forceful impacts.
Innovation Solution
A fastening apparatus comprising a first part with projections and holes, a washer part with corresponding holes and openings, and a second part with projections that penetrate the washer part's openings, causing deformation and exerting a force to secure the second part in place, preventing removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive is used to attach metal plate to product surface, then attachment process is simple, but adhesion reliability is poor
Solution Approach 1:
The patent replaces the chemical bonding mechanism (adhesive) with a mechanical interlocking system. The washer part with projections and holes creates a mechanical connection through the product material, substituting the unreliable adhesive bond with a robust mechanical structure that resists pull and impact forces.
Solution Approach 2:
The patent changes the attachment mechanism from surface-level chemical adhesion to depth-based mechanical interlocking. By creating holes and projections that extend through the material, the attachment parameter shifts from surface area contact to volumetric engagement, significantly improving reliability.
2Reliability
If male or female components are used for attachment, then permanent attachment is achieved, but vulnerability to separation by impact remains
Solution Approach 1:
The attachment system is segmented into multiple functional components: the first part with projections, the washer part with holes and openings, and the second part with penetrating projections. This segmentation allows each component to perform a specific function (alignment, structural support, anchoring) that collectively provides superior impact resistance.
Solution Approach 2:
The patent employs a composite structure combining multiple materials (metal components, washer material, product material) with different mechanical properties. The washer part acts as a composite element that distributes impact forces across multiple interfaces, enhancing overall strength and resistance to separation.
3Ease of manufacture
If force is applied to join components, then attachment is achieved, but vulnerability to subsequent separation by pull increases
Solution Approach 1:
The washer part is pre-formed with specific hole patterns and geometric features before assembly. The projections and openings are prepared in advance to receive and constrain the joining elements, ensuring that the final assembly has inherent resistance to pull forces without requiring additional strengthening steps.
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 apparatus provides a secure and permanent attachment of metal plates with logos or designs to various materials, ensuring durability against impacts and ensuring the logo or emblem remains affixed.
Implementation Method 1
penetration by each second projection of the corresponding opening of the washer part causes a deformation of a portion of a second material of the washer part proximate to the corresponding opening
Implementation Method 2
the deformed second material exerts a force on the second projection and prevents removal of the second projection from the corresponding opening
Data Source
AI summary
A fastening apparatus includes a first part comprising a plurality of first projections and a plurality of first holes. A washer part comprises a plurality of second holes corresponding to the plurality of first projections and a plurality of openings corresponding to the plurality of first holes. The washer part and the first part are positioned on a first side of a first material of a product. A second part having a plurality of second projections is positioned on a second side of the first material. Each of the plurality of second projections penetrates a respective opening of the washer part, wherein penetration by each second projection of the corresponding opening causes a deformation of a portion of a second material of the washer part proximate to the corresponding opening.