Base Fastener Rotating Posts for Heat Sink Assembly
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Solution Overview
Problem
The existing methods for attaching heat dissipating devices to chips or central processing units are time-consuming and complicated, particularly due to the high-temperature melting process required for nut washers, which makes reworking difficult and inefficient.
Innovation Solution
A base fastener with a body featuring a throughhole and protruding posts that are rotatably connected to arc holes, allowing for quick and reliable assembly and disassembly by rotating the posts through the arc holes to secure the nut washer, thereby simplifying the attachment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the high-temperature melting process is used to form stoppers on extending projections, then the nut washer units can be fixed to the heat dissipating device, but the assembly time increases and reworking becomes difficult
Solution Approach 1:
The patent replaces the thermal melting process with a purely mechanical locking mechanism. The L-shaped projections with horizontal and vertical segments engage with corresponding slots in the heat dissipating device through rotational movement, achieving secure fixation without high-temperature melting. This mechanical substitution eliminates the time-consuming thermal process while maintaining reliable fixing.
Solution Approach 2:
The patent introduces a dynamic assembly process where the L-shaped projections rotate from a loading position to a locked position. The projections can be easily inserted horizontally and then rotated 90 degrees to engage the vertical slots, providing both ease of assembly and secure locking. This dynamic mechanism allows for quick assembly and disassembly without permanent modifications.
2Reliability
If the extending projections are flattened with high-temperature melting to form stoppers, then the nut washer units can prevent separation, but the process becomes complicated and time-consuming
Solution Approach 1:
The patent divides the fastening function into separate components: the nut washer unit with L-shaped projections and the heat dissipating device with corresponding slots. The L-shaped projections are pre-formed with distinct horizontal and vertical segments, eliminating the need for post-assembly melting and flattening processes. This segmentation allows for simple assembly without complex thermal processing.
Solution Approach 2:
The L-shaped projections are pre-formed during the molding process of the nut washer units, with the horizontal segments designed to insert into slots and the vertical segments designed to rotate into locking position. This preliminary formation eliminates the need for subsequent high-temperature melting and flattening operations, significantly simplifying the overall process while maintaining reliable anti-separation capability.
3Reliability
If the nut washer units are fixed using the traditional melting process, then secure attachment is achieved, but reworking cannot be performed
Solution Approach 1:
The patent enables recovery and reuse of the nut washer units through reversible mechanical engagement. The L-shaped projections can be easily disengaged from the slots by rotating them back to the loading position, allowing the nut washer units to be removed, recovered, and reused on different heat dissipating devices. This eliminates the permanent bonding effect of high-temperature melting while maintaining secure attachment during use.
Data Source
AI summary
The present invention relates to a base fastener which is disposed corresponding to a pair of arc holes on a base. The base fastener comprises a body. The body has a first side, a second side, and a throughhole. The throughhole penetrates through the first side and the second side. A first post and a second post protrude from the second side beside the throughhole. The first post, the second post, and the pair of arc holes are disposed correspondingly and rotatably connected to each other to be assembled with the base firmly.