Elastomeric Cap Concealing Fastener for Foam Padding
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Solution Overview
Problem
Existing systems for concealing fasteners used to secure foam padding and other objects to substrates are susceptible to tampering, fail to seamlessly integrate with the assembly, lack access after installation, and are not adaptable to various surfaces or fastener types.
Innovation Solution
An elastomeric cap that securely conceals fasteners by using the fastener itself to clamp onto the cap, allowing for easy access while being flexible enough to conform to curved surfaces and resistant to weather and chemical degradation, without the need for special hardware or adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fasteners are used to secure EVA foam pads to substrates, then the fastening function is achieved, but the fasteners are exposed and susceptible to tampering
Solution Approach 1:
The cap is designed with differentiated local properties: the outer surface matches the foam pad material for seamless blending, while the inner surface provides mechanical engagement features (apertures, clamping surfaces) for secure fastener retention. This local quality differentiation allows the cap to simultaneously achieve concealment and secure fastening.
Solution Approach 2:
The cap is designed to receive and enclose the fastener head within its internal cavity, creating a nested structure where the fastener is housed inside the cap which in turn is attached to the foam pad. This nesting conceals the fastener while maintaining the fastening function.
2Object-affected harmful factors
If caps are designed to conceal fasteners, then tampering is limited, but access to fasteners for maintenance becomes difficult
Solution Approach 1:
The cap incorporates a removable or openable portion that can be dynamically changed between closed (concealing) and open (access) states. This dynamic feature allows the cap to provide concealment during normal use while enabling easy access for installation, maintenance, or adjustment.
Solution Approach 2:
The cap is divided into functional segments: a main body for concealment and a removable/openable portion for access. This segmentation allows different parts of the cap to serve different functions - the main body provides seamless blending and concealment, while the removable portion enables tool access to the fastener head.
3Reliability
If rigid caps are used to conceal fasteners, then the fastening function is achieved, but the caps cannot conform to curved or non-planar surfaces
Solution Approach 1:
The cap is constructed from flexible or elastomeric material that can elastically deform to conform to curved or non-planar surfaces of the foam pad. This flexibility allows the cap to adapt to various substrate geometries while maintaining its structural integrity and fastening function.
4Strength
If adhesives are used to attach EVA foam to substrates, then bonding is achieved, but the adhesives do not bond well to EVA foam
Solution Approach 1:
The invention replaces the chemical bonding mechanism (adhesive) with a mechanical bonding mechanism. The cap uses mechanical features such as apertures, clamping surfaces, and friction engagement to attach to the foam pad, eliminating the need for adhesives that fail to bond to EVA foam.
5Reliability
If existing cap systems are designed for single fastener type, then specific fastening requirements are met, but versatility across different applications is limited
Solution Approach 1:
The cap is designed with universal features that allow it to accommodate different fastener types and configurations. The internal cavity and aperture design can adapt to various fastener head sizes and shapes, and the mechanical attachment mechanism works with different foam pad and substrate combinations, making the cap applicable across multiple applications.
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 elastomeric cap effectively limits undesired interaction with fasteners, provides necessary access, and securely fastens to substrates, including curved surfaces, without adhesion, enhancing security and usability across different contexts.
Implementation Method 1
an elastomeric body having upper and lower walls, an internal cavity disposed between the upper and lower walls
Data Source
AI summary
An elastomeric cap for concealing a fastener used to secure an object (e.g., an elastomeric object such as foam padding or the like) to a substrate (e.g., frame, wall, etc.). A head of a fastener may be inserted through an aperture in one wall of the cap and into an internal cavity of the cap. A shank of the fastener may be at least partially inserted into or through an aperture of the object (e.g., and the substrate). A tool (e.g., screwdriver, torque wrench, etc) may be inserted through an opposing aperture in an opposing second wall of the cap and used to manipulate the fastener head and thus the shank to secure the object to the substrate via clamping of the object between the fastener head and opposing second wall of the cap on one hand and the substrate on the other hand.