Spring-Loaded PCB Bracket for Shock-Absorbing Chassis Mounting
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Solution Overview
Problem
Conventional methods for securing printed circuit boards (PCBs) to computer system chassis are inefficient, particularly in compact systems where tools are difficult to use and smaller screws/nuts are hard to handle, leading to increased external forces that can damage PCB components and solder joints.
Innovation Solution
A bracket with integrated mechanical energy absorbing components, such as leaf springs or helical springs, that provide a pressure fit coupling and absorb external forces, ensuring the PCB is securely attached without tools and reducing jiggling due to manufacturing tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional rigid brackets are used to secure PCBs to chassis, then the PCB is firmly attached, but the system is vulnerable to damage from external forces like shock and vibration
Solution Approach 1:
The bracket incorporates energy absorbing elements (such as elastomeric materials or spring mechanisms) that are pre-positioned to cushion and absorb external forces like shock and vibration before they can damage the PCB or its components. This beforehand cushioning protects the rigid electrical components from harmful mechanical stresses.
2Strength
If conventional tool-based securing methods are used, then the PCB can be firmly attached, but the manufacturing process is inefficient and time-consuming
Solution Approach 1:
The bracket is designed with self-securing features such as friction-fit mechanisms, snap-in configurations, or spring-loaded elements that automatically engage with the chassis and PCB without requiring external tools. This self-service attachment method enables rapid assembly while maintaining firm mechanical and electrical connections.
3Device complexity
If rigid brackets with fixed dimensions are used, then the structure is simple, but manufacturing tolerances cause misalignment and assembly errors
Solution Approach 1:
The bracket incorporates dynamic elements such as spring-loaded arms, elastomeric connectors, or adjustable positioning features that can flex and adapt to accommodate variations in manufacturing tolerances. These dynamic components maintain proper alignment and secure connections despite dimensional variations in the PCB or chassis.
4Strength
If tool-based securing methods are used, then the attachment is secure, but the assembly process requires additional equipment and training
Solution Approach 1:
The bracket employs self-securing mechanisms such as friction-fit interfaces, snap-in features, or spring-loaded clamps that automatically engage and lock into place without requiring screws, clips, or other external fastening tools. This design enables operators to quickly assemble the PCB to the chassis through simple insertion motions, eliminating the need for specialized tools or extensive training.
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 mechanical energy absorbing bracket allows for quick and tool-free attachment of PCBs to the chassis, reducing external forces experienced by components and improving the reliability and manufacturability of storage systems by preventing damage from shock or vibration.
Implementation Method 1
one or more mechanical energy absorbing components to absorb mechanical energy
Data Source
AI summary
An apparatus includes a body having one or more protrusions from a surface of the body, wherein each of the protrusions has a corresponding coupling positioned at a corresponding end of each of the protrusions. The apparatus further includes one or more mechanical energy storage components, wherein each of the one or more mechanical energy storage components provide a force that is greater than an external force exerted on the apparatus.