Combined Heat Sink

• US 20190204025A1
• Filed: 10/01/2018
• Published: 07/04/2019
• Est. Priority Date: 12/29/2017
• Status: Active Grant

• Current Assignee: Cooler Master Co. Ltd.
• Original Assignee: Cooler Master Co. Ltd.
• Inventors: Tsai, Chang-han
• Granted Patent: US 10,641,557 B2
• Time in Patent Office: Days
• CPC Class Codes: F28D 2021/0029 Heat sinks
• CPC Class Codes: F28F 2215/00 Fins
• CPC Class Codes: F28F 2275/08 by clamping or clipping
• CPC Class Codes: F28F 2280/02 Removable elements
• CPC Class Codes: F28F 3/06 the means being attachable to the element
• CPC Class Codes: F28F 3/08 Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
• CPC Class Codes: H01L 23/3672 Foil-like cooling fins or heat sinks being part of lead-frames H01L23/49568

Abstract

A combined heat sink has multiple dissipation fins serially mounted together. Each one of the dissipation fins has a body and two flanges. The body has at least one through hole formed through the body. The two flanges are respectively formed on one of two surfaces of the body, and have at least one connecting arm. Multiple protrusions protrude on the at least one connecting arm, and a width of the at least one through hole is smaller than a total width of the at least one connecting arm and the multiple protrusions. When the multiple dissipation fins are mounted together, the protrusions of the at least one connecting arm of each dissipation fin pass through the at least one through hole of an adjacent one of the dissipation fins, and abut an area near the at least one through hole to avoid separations of the dissipation fins.

Claims

1. A combined heat sink comprising multiple dissipation fins serially mounted together, and each one of the multiple dissipation fins having:

a body having

two surfaces; and

at least one through hole formed through the body; and

two flanges respectively formed on one of the two surfaces of the body and having

at least one connecting arm connected to one of the two flanges of the dissipation fin and having

multiple protrusions protruding on the at least one connecting arm separately, and a width of the at least one through hole being smaller than a total width of the at least one connecting arm and the multiple protrusions;

wherein when the multiple dissipation fins are mounted together, the multiple protrusions of the at least one connecting arm of each one of the dissipation fins pass through the at least one through hole of an adjacent one of the dissipation fins, and abut an area near the at least one through hole to avoid separations of the multiple dissipation fins.

2. The combined heat sink as claimed in claim 1, wherein the body and the two flanges are formed as one piece.

3. The combined heat sink as claimed in claim 1, wherein the two flanges of each dissipation fin are formed by a punching process.

4. The combined heat sink as claimed in claim 2, wherein the two flanges of each dissipation fin are formed by a punching process.

5. The combined heat sink as claimed in claim 4, wherein the two flanges of each dissipation fin are formed on different sides of the same surface of the body.

6. The combined heat sink as claimed in claim 4, wherein each one of the two flanges of each dissipation fin is formed on a respective one of the two surfaces of the body.

7. The combined heat sink as claimed in claim 5, wherein each one of the multiple protrusions is a barb or a mounting boss.

8. The combined heat sink as claimed in claim 6, wherein each one of the multiple protrusions is a barb or a mounting boss.

9. The combined heat sink as claimed in claim 7, wherein the at least one connecting arm and the multiple protrusions are made of a material with plasticity.

10. The combined heat sink as claimed in claim 8, wherein the at least one connecting arm and the multiple protrusions are made of a material with plasticity.