Self-fastened heat sinks

• US 4,203,488 A
• Filed: 03/01/1978
• Issued: 05/20/1980
• Est. Priority Date: 03/01/1978
• Status: Expired due to Term

• Current Assignee: Aavid Thermal Products Incorporated (Ansys Incorporated)
• Original Assignee: Aavid Thermal Products Incorporated (Ansys Incorporated)
• Inventors: McCarthy, Alfred F., Johnson, Philip A.
• Primary Examiner(s): Richter, Sheldon
• Application Number:
  US05/882,364
• Time in Patent Office: 811 Days
• Field of Search: 165/80, 165/185, 165/77, 165/DIG. 7, 165/DIG. 3, 165/80 R, 165/80 B, 174/16 HS, 357/79, 357/81, 361/383, 361/386, 361/388
• US Class Current: 165/80.3
• CPC Class Codes: H01L 23/4093 Snap-on arrangements, e.g. clips
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

Dissipation of heat from miniature solid-state devices and the like is achieved by a resilient heat-sink structure which opens to receive a substantially flat tab or other heat-transfer body freely between two relatively-movable oppositely-disposed broad-area portions of the structure and which then closes and yieldingly holds the two portions about the body as shaped end connectors and sprung and locked as the result of simple manipulations.

Claims

1. Self-fastened heat-sink apparatus comprising first and second broad-area heat-transfer elements of bendable and resilient sheet metal each having a substantially flat broad-area side shaped to abut closely with one of two oppositely-disposed spaced surfaces of a body from which heat is to be withdrawn and dissipated, each of said elements having first and second connection means each integral therewith and projecting therefrom substantially in opposite directions from laterally-opposite edges thereof, the first connection means making an unbroken integral loop-shaped connection between nearby edges of said elements and orienting said elements toward one another for abutting engagements of the broad-area sides thereof with the spaced surfaces of a body therebetween while being resiliently bendable to allow said elements to be spread apart angularly in jaw-like fashion to admit a body therebetween and to be moved toward one another for said abutting engagements, said loop-shaped connection being elongated and forming an open passageway alongside a body held between said elements which exposes it to the ambient environment along both its sides through substantially all of its length, at least one of said elements having a plurality of spaced heat-dissipating projections integral therewith along edges between said laterally-opposite edges, and the second connection means being disposed at the edges laterally opposite said one of said nearby edges and including two separate clasp parts each integral with an edge of a different one of said elements and shaped and disposed to detent and catch with one another when said elements are moved toward one another to produce the said abutting engagements, whereby said elements are movable apart to accommodate insertion of a body therebetween and may then be clasped and locked together while maintaining resilient abutting engagements with surfaces of the body therebetween.

2. Self-fastened heat-sink apparatus as set forth in claim 1 wherein said broad-area sides of said heat-transfer elements are substantially flat and of substantially the same width, for abutting engagements with top and bottom surfaces of a body having a thin rectangular parallelepiped configuration, and said loop-shaped connection therebetween is of said same width, and wherein said two clasp parts comprise parallel ends of said second connection means partly rolled outwardly and inwardly, respectively, and open to receive and catch with one another.