Self-fastened heat sinks

• US 4,235,285 A
• Filed: 10/29/1979
• Issued: 11/25/1980
• Est. Priority Date: 10/29/1979
• Status: Expired due to Term

• Current Assignee: Lasalle Business Credit, Inc. (Bank of America Corp.)
• Original Assignee: Aavid Thermal Products Incorporated (Ansys Incorporated)
• Inventors: Johnson, Philip A., McCarthy, Alfred F.
• Primary Examiner(s): Richter, Sheldon
• Application Number:
  US06/089,022
• Time in Patent Office: 393 Days
• Field of Search: 165/80 B, 165/185, 165/80 D, 165/80 C, 165/80 E, 165/80 R, 165/81, 165/82, 165/168, 165/169, 361/383, 174/16 HS, 357/81, 357/79
• 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 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 are sprung and locked as the result of simple manipulations.

Claims

1. Self-fastened heat-sink apparatus comprising first and second broad-area metal heat-transfer elements each having a 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side shaped to abut closely with one of two oppositely-disposed spaced surfaces of a body from which heat is to be withdrawn and dissipated, each of said elements having first and second connection means each integral therewith and projecting therefom substantially in opposite directions from laterally-opposite edges thereof, said elements and connection means being of sheet metal, the first connection means and the second connection means of both of said elements each being separable and disposed respectively as cooperating halves of a clasp which locks and orients said elements toward one another for abutting and holding engagements of the broad-area sides thereof with the spaced surfaces of a body therebetween, said first and second connection means each including two separate parallel clasp parts partly rolled outwardly and inwardly, respectively, from two different elongated projections from edges of said first and second heat-transfer elements, said clasp parts being open to receive and catch with one another in pawl-like fashion when said elements are moved toward one another to produce said abutting engagements, said connection means exhibiting resilience and resiliently urging said elements toward one another for said abutting and holding engagements, whereby said elements are separable to accommodate insertion of a body therebetween and may then be clasped and locked together by way of said clasp parts 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, for abutting engagements with top and bottom surfaces of a body having substantially a thin rectangular parallelepiped configuration, and wherein the first and second connection means for and integral with one of said heat-transfer elements are elongated and bent away from the oppositely-disposed connection means for the other of said elements to form open passageways along opposite sides of a body held between said elements.