Deformable Posts for Secure IHS Chassis Foot Attachment
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Solution Overview
Problem
Conventional information handling system (IHS) chassis feet often peel or shear off due to inadequate adhesion, especially when made from compliant materials like silicone, leading to increased manufacturing costs and time, as they do not effectively bond with the rigid chassis and work surface, causing sliding issues.
Innovation Solution
A chassis foot apparatus featuring a base member with deformable posts that engage the IHS chassis, providing a stronger coupling through a two-shot molding process using materials like Polycarbonate/Acrylonitrile Butadiene Styrene (PC/ABS) for the base and Thermoplastic Polyurethane (TPU) for the resilient member, ensuring a chemical bond and improved stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive bonding is used to attach the foot to the IHS chassis, then the foot can be secured to the chassis, but the bonding process becomes complex and costly due to the need for controlling application pressure, time, temperature, and guaranteeing a contaminant-free environment
Solution Approach 1:
The patent extracts the adhesive bonding step entirely from the manufacturing process by designing a mechanical attachment system using posts with external threads that engage with internally threaded receptacles in the chassis, eliminating the need for complex adhesive bonding processes while achieving reliable attachment
Solution Approach 2:
The patent replaces the chemical adhesive bonding system with a mechanical fastening system using threaded posts and receptacles, substituting chemical bonding mechanisms with mechanical engagement to achieve secure attachment without the complexity of controlling adhesive application parameters
2Adaptability or versatility
If silicone material is used for the foot, then the foot provides compliance and flexibility, but the foot does not bond well to adhesive and may peel or shear off
Solution Approach 1:
The patent segments the foot assembly into distinct functional components: a compliant silicone foot portion for friction and shock absorption, and a rigid base member with threaded posts for mechanical attachment, allowing each component to optimize its specific function without compromise
Solution Approach 2:
The patent uses composite construction combining silicone rubber for the foot portion to provide compliance and friction, with a separate rigid base member material (such as plastic or metal) for structural support and mechanical attachment, leveraging the advantages of each material type
3Object-affected harmful factors
If the foot is made from compliant flexible material sandwiched between rigid chassis and work surface, then the foot provides friction and shock protection, but the foot may roll, shear, and peel away when the chassis is slid across the work surface
Solution Approach 1:
The patent applies preliminary action by pre-threading the posts with threads before insertion, and designing the receptacles with internal threads that engage the posts, creating a pre-configured mechanical attachment system that prevents rolling and shearing before they can occur during operation
Solution Approach 2:
The patent incorporates dynamics by allowing the resilient foot portion to compress and deform under load while the threaded mechanical connection maintains its engagement, enabling the foot to dynamically respond to shock and vibration while remaining securely attached to the chassis
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 deformable posts create a secure attachment to the IHS chassis, enhancing friction and preventing sliding, thus providing a more reliable and cost-effective solution compared to traditional adhesive methods.
Implementation Method 1
a resilient member coupled to the base member
Implementation Method 2
the at least one post is deformable into engagement with a chassis to couple the base member and the resilient member to the chassis
Data Source
AI summary
A chassis foot apparatus includes a base member. A resilient member is coupled to the base member. At least one post extends from the base member. The at least one post is deformable into engagement with a chassis to couple the base member and the resilient member to the chassis.