Heat Sink Frame With Segmented Opening And Bent Wall
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Solution Overview
Problem
Conventional swage members used in heat sinks lack sufficient mounting area size, resulting in inadequate cooling performance due to the deformation of the shape retaining surface during swaging, which restricts the effective mounting of additional components or devices.
Innovation Solution
A heat sink design featuring a frame member with a specific opening configuration and a plate member, where the plate member is press-fit into the openings of the frame member, allowing for a gap between the plate and the frame, and the wall of the frame is bent to securely engage with the plate, providing a stable mounting area while maintaining thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional swage member is used to secure the plate member, then the plate member can be fixed to the frame member, but the shape retaining surface is deformed during swaging, resulting in insufficient mounting area
Solution Approach 1:
The opening is divided into two distinct parts: a first opening part for receiving the first plate part, and a second opening part larger than the first for receiving the second plate part. This segmentation allows the plate member to have different sizes at different locations, providing sufficient mounting area while maintaining secure fixing through the bent wall structure.
Solution Approach 2:
The wall is bent from its original position to engage with the plate member, transitioning from a flat structural element to a three-dimensional securing mechanism. This dimensional change allows the wall to provide both structural support and secure fixation without compromising the mounting area on the plate member's surface.
2Area of stationary object
If the plate member is made larger to provide sufficient mounting area, then mounting performance improves, but the cooling performance becomes insufficient due to inadequate thermal contact
Solution Approach 1:
The plate member is designed with non-uniform dimensions: the first plate part has a smaller size while the second plate part has a larger size. This local quality variation allows the second plate part to provide sufficient mounting area, while the overall plate member maintains appropriate thermal contact with the heat generating component, thus balancing mounting area requirements with cooling performance.
3Area of stationary object
If the opening is made larger to accommodate a larger plate member, then mounting area increases, but the structural integrity and securing capability of the frame member deteriorates
Solution Approach 1:
The opening is segmented into a first opening part and a second opening part, with the second being larger than the first. This segmentation allows the frame member to maintain structural integrity in the first opening part while providing sufficient space in the second opening part for the plate member, thus balancing structural strength with mounting area requirements.
Solution Approach 2:
The wall is designed to be bent during assembly to engage with the plate member. This dynamic adjustment allows the wall to adapt to the plate member's position and provide secure fixation, maintaining securing capability even with a larger opening that accommodates the second plate part.
Data Source
AI summary
A heat sink includes a frame having an opening, the opening extending in a thickness direction of the frame, the opening having a first opening part and a second opening part, the second opening part being larger than the first opening part in a plan view perpendicular to the thickness direction, a wall standing on the frame at an edge of the opening, a groove formed in the frame beside the wall, and a plate member including a first plate disposed in the first opening part and a second plate disposed in the second opening part and larger than the first plate in the plan view, wherein the second opening part is larger than the second plate in the plan view to leave a gap therebetween, and the wall is bent toward the opening to be in contact with an edge along a perimeter of the second plate.