Fuse holder heat sink bracket

• US 5,214,565 A
• Filed: 01/31/1992
• Issued: 05/25/1993
• Est. Priority Date: 01/31/1992
• Status: Expired due to Term

• Current Assignee: Fujitsu Network Transmission Systems, Inc.
• Original Assignee: Fujitsu Network Transmission Systems, Inc.
• Inventors: Flores, Michael A.
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): WHANG, YOUNG
• Application Number:
  US07/828,696
• Time in Patent Office: 480 Days
• Field of Search: 361/380, 361/383, 361/386, 361/388, 361/390, 361/391, 361/392, 361/393, 361/394, 361/395, 361/399, 361/427, 361/430, 361/431, 361/347, 361/349, 361/357, 361/360, 165/80.3, 165/185, 337/216, 337/227, 337/228, 337/106, 174/163, 357/81
• US Class Current: 361/702
• CPC Class Codes: H01H 2085/2085 Holders for mounting a fuse on a printed circuit
• CPC Class Codes: H01H 85/47 Means for cooling
• CPC Class Codes: H05K 7/20 Modifications to facilitate cooling, ventilating, or heating

Abstract

A bracket for fuse holders includes heat sink fins for cooling the fuse holders. The bracket has a main body conforming to the shape of the fuse holders and mounting members or feet which can be attached, using self-clinching nuts, to a printed circuit board on which the fuse holders are mounted. The heat sink is formed of fins attached to the main body. When space is limited, the fins preferably have a rectangular U-shape to provide increased cooling area. The main body provides structural rigidity to prevent the fuse holders from being dislodged due to torquing of the fuse holder caps.

Claims

1. A bracket for fuse holders attached to a printed circuit board, comprising:

a main body having a U-shape, conforming to the fuse holders, with a base and two sides, and having first and second ends, roughly parallel to each other and roughly perpendicular to said base at the first ends;

mounting means, including feet, disposed roughly parallel to said base, one of the feet integrally formed at the second end of each side, for mounting said bracket on the printed circuit board; and

heat sink means, including fins integrally formed on said main body, for cooling said main body.

2. The bracket as recited in claim 1, wherein said bracket is formed from a single piece of sheet metal, each of said fins meeting the base of said main body at the corner extending between the sides of said main body.

3. The bracket as recited in claim 2, wherein said fins are U-shaped, each having a base and two sides, one of the sides of each fin meeting the base of said main body at the corner formed therebetween.

4. A fuse holder assembly, comprising:

fuse holders, each having a removable cap at one end, with a composite cross-sectional shape in a plane parallel to the end of each fuse holder; and

a bracket, including--

a main body having a U-shape conforming to the composite cross=sectional shape of the fuse holders, with a base and two sides, and having first and second ends, roughly parallel to each other and roughly perpendicular to the base at the first ends;

feet disposed roughly parallel to the base, one of the feet integrally formed at the second end of each side; and

fins integrally formed on the main body for cooling the main body.

5. The fuse holder as recited in claim 4,

wherein said fuse holders each have a rectangular external cross-section, whereby the composite cross-sectional shape of said fuse holders is rectangular, and

wherein each of the sides of the main body of said bracket is substantially perpendicular to the base thereof.

6. The fuse holder as recited in claim 5, wherein each fin has two sides with one side attached to the base of the main body and extending between the sides of the main body of said bracket.

7. A fuse protected device, comprising:

a cabinet having a panel with fuse access holes;

a printed circuit board, mounted in said cabinet, having an edge adjacent the fuse access holes in the panel of said cabinet;

fuse holders, attached to said printed circuit board, having a removable cap aligned with one of the fuse access holes of said cabinet, said fuse holders having a composite cross-sectional shape in a plane parallel to the panel with the fuse access holes in said cabinet; and

a bracket, including--

a main body having a U-shape conforming to the composite cross-sectional shape of the fuse holders, with a base and two sides, and having first and second ends, roughly parallel to each other and roughly perpendicular to the base at the first ends;

feet disposed roughly parallel to the base, one of the feet integrally formed at the second end of each side; and

fins integrally formed on the main body for cooling the main body.

8. The fuse protected device as recited in claim 7, wherein each fin has two sides with one side attached to the base of the main body and extending between the sides of the main body of said bracket.

9. The fuse protected device as recited in claim 7, wherein the sides of the heat sink of said bracket are disposed substantially parallel to air flow in said cabinet at the edge of said printed circuit board adjacent the fuse access holes.