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Method for a low-cost centering wire bend for oversized clips on small heatsinks

IP.com Disclosure Number: IPCOM000029125D
Publication Date: 2004-Jun-16
Document File: 2 page(s) / 136K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for a low-cost centering wire bend for oversized clips on small heatsinks. Benefits include improved functionality, improved performance, and improved cost effectiveness.

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Method for a low-cost centering wire bend for oversized clips on small heatsinks

Disclosed is a method for a low-cost centering wire bend for oversized clips on small heatsinks. Benefits include improved functionality, improved performance, and improved cost effectiveness.

Background

      Frequently, due to design constraints and reuse requirements in high volume manufacturing environments, a heatsink ends up with a smaller width (W) than the length of the wire clip (WC). When this occurs, the heatsink can end up not centered or retained on the part it is cooling.

      Any structural discontinuities in the torsion rod region, such as bends, lead to unwanted deflection profiles and reduction in the hold down force. The wire is designed to be at peak stress throughout the width of the heatsink.

 

      Conventionally, a proprietary heatsink clip is used that does a poor job of centering the heatsink and a poor job of keeping it centered.

Description

              The disclosed method is a double catch elbow wire clip for use with small heatsinks. The clip centers the heatsink and restrain it during shock and vibration (see Figure 1).

      With the disclosed method, structural discontinuities (bends) are possible and does not reduce the hold-down force in the leg region. The double elbow supplies the alignment and retention to keep the heatsink in place without sacrificing hold-down force.

Advantages

              The disclosed method provides advantages, incl...