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US 6,742,581 B2Granted
Heat sink and fin module
AssigneeFujikura Ltd.
InventorsMasataka Mochizuki, Koichi Mashiko
Life of this patent
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Abstract
A heat sink comprises a base portion, and a multiplicity of thin plate fins erected on the base portion in parallel with each other. The fins are folded in two at their lower ends to form two-ply portions and are fixed by having the two-ply portions inserted into grooves formed in the base portion.
Claims11
A heat sink comprising:
- a base portion having grooves formed therein;
- and
- a plurality of thin plate fins erected on the base portion in parallel with each other, at least two fins of said plurality of thin plate fins having two-ply portions formed by folding lower end portions of the at least two fins in two,
- wherein said two-ply portions are inserted in the grooves formed in the base portion,
- wherein said at least two fins have:
- bent members formed at upper end portions of the at least two fins and folded generally at a right angle to abut against an adjoining fin,
- protrusions formed at leading end portions of said bent members, and
- recesses formed at root end portions of said bent members so that the recesses are jointed to said protrusions of the adjoining fin by fitting said protrusions therein,
- wherein an opening is formed between two bent members that are formed at end portions of the at least two fins, and
- wherein a space between the at least two fins is opened on an upper end side.
7 more elements
A heat sink comprising:
- a base portion having grooves formed therein;
- and
- a plurality of thin plated fins erected on the base portion in parallel with each other, said plurality of thin plated fins further comprising:
- bent members formed at lower end portions of the fins individually and folded generally at a right angle to abut against adjacent fins,
- recesses so formed at root end portions of said bent members, and
- protrusions formed at leading end portions of said bent members and inserted into the recesses of the adjacent fin to fasten to the adjacent fin integrally, forming at least one substantially continuous and flat surface,
- whereby the fins arrayed in parallel with each other are jointed individually at their lower end portions by said protrusions and said recesses.
4 more elements
A fin module comprising:
- a plurality of thin plate fins arrayed in parallel with each other, said plurality of thin plate fins further comprising:
- bent members folded generally at a right angle of the fins to abut against adjacent fins, said bent members being formed at upper end portions and at lower end portions of the fins individually,
- recesses so formed at root end portions of said bent members, and
- protrusions formed at leading end portions of said bent members and inserted into the recesses of the adjacent fin to fasten to the adjacent fin integrally, forming at least one substantially continuous and flat surface,
- whereby the fins arrayed in parallel with each other are jointed individually at their upper end portions and at their lower end portions by said protrusions and said recesses.
2 more elements
Dependencies are inferred from the claim text.