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US 12,354,822 B2Granted
Fuse element
AssigneesAutonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
InventorsMisato Ueki, Yutaka Takata
Life of this patent
Estimating the term…
Abstract
It is aimed to provide a fuse element capable of interrupting an electrical circuit while suppressing the formation of carbide when an abnormal current is generated. A fuse element 10 is provided with an insulating base material 3 and a conductor layer 1 provided on a surface of the base material 3. The conductor layer 1 is physically ruptured at a temperature lower than a temperature, at which the conductor layer 1 is fused and cut, when the conductor layer 1 is energized and generates heat.
Claims7
A fuse element, comprising:
- an insulating base material;
- a conductor layer provided on a surface of the base material;
- and
- a foam layer for covering a surface of the conductor layer, the foam layer containing a foaming agent that is heated by a heating of the conductor layer such that the conductor layer may be physically ruptured by being foamed when the foaming agent is heated,
- the conductor layer being physically ruptured when the conductor layer is energized by an abnormal current, the physical rupture of the conductor layer interrupting circuit operation and occurring at a temperature lower than a temperature at which the conductor layer would be fused and cut without the foam layer.
2 more elements
Dependencies are inferred from the claim text.