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US 10,593,495 B2Granted
Fuse element, fuse device, protective device, short-circuit device, switching device
AssigneeDexerials Corporation
InventorsYoshihiro Yoneda, Yuji Furuuchi, Kazuyuki Sakakibara
Life of this patent
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Abstract
A fuse element comprises a low melting point metal layer, a first high melting point metal layer having a higher melting point than a melting point of the low melting point metal layer, and a restricting portion including a high melting point material having a higher melting point than a melting point of the low melting point metal layer and configured to restrict flow of the low melting point metal or deformation of a layered body constituted by the first high melting point metal layer and the low melting point metal layer.
Claims35
A fuse element comprising:
- a low melting point metal layer;
- a first high melting point metal layer layered on the low melting point metal layer and having a higher melting point than a melting point of the low melting point metal layer;
- and
- a restricting portion including a high melting point material having a higher melting point than the melting point of the low melting point metal layer and configured to restrict flowing of a low melting point metal or deformation of a layered body constituted by the first high melting point metal layer and the low melting point metal layer,
- wherein in the restricting portion, side surfaces of one or more holes provided in the low melting point metal layer are at least partially covered by a second high melting point metal layer continuous with the first high melting point metal layer.
2 more elements
A fuse element comprising:
- a low melting point metal layer;
- a first high melting point metal layer layered on the low melting point metal layer and having a higher melting point than a melting point of the low melting point metal layer;
- and
- a restricting portion including a high melting point material having a higher melting point than the melting point of the low melting point metal layer and configured to restrict flowing of a low melting point metal or deformation of a layered body constituted by the first high melting point metal layer and the low melting point metal layer,
- wherein in the restricting portion, first high melting point particles having a higher melting point than the melting point of the low melting point metal layer are distributed in the low melting point metal layer.
2 more elements
A fuse element comprising:
- a low melting point metal layer;
- a first high melting point metal layer layered on the low melting point metal layer and having a higher melting point than a melting point of the low melting point metal layer;
- and
- a restricting portion including a high melting point material having a higher melting point than the melting point of the low melting point metal layer and configured to restrict flowing of a low melting point metal or deformation of a layered body constituted by the first high melting point metal layer and the low melting point metal layer,
- wherein in the restricting portion, second high melting point particles having a higher melting point than the melting point of the low melting point metal layer are pressed into the low melting point metal layer.
2 more elements
A fuse element comprising:
- a low melting point metal layer;
- a first high melting point metal layer layered on the low melting point metal layer and having a higher melting point than a melting point of the low melting point metal layer;
- and
- a restricting portion including a high melting point material having a higher melting point than the melting point of the low melting point metal layer and configured to restrict flowing of a low melting point metal or deformation of a layered body constituted by the first high melting point metal layer and the low melting point metal layer,
- wherein in the restricting portion, second high melting point particles having a higher melting point than the melting point of the low melting point metal layer are pressed into the layered body constituted by the first high melting point metal layer and the low melting point metal layer.
2 more elements
A fuse device comprising:
- an electrically insulating substrate;
- a first electrode and a second electrode formed on the electrically insulating substrate;
- and
- a fuse element including a low melting point metal layer and a first high melting point metal layer having a higher melting point than a melting point of the low melting point metal layer and connected across the first electrode and the second electrode, the low melting point metal layer and the first high melting point metal layer being layered,
- wherein the fuse element includes a restricting portion including a high melting point material having a higher melting point than the melting point of the low melting point metal layer, and configured to restrict flowing of a low melting point metal or deformation of a layered body constituted by the first high melting point metal layer and the low melting point metal layer, and
- in the restricting portion, side surfaces of one or more holes provided in the low melting point metal layer are at least partially covered by a second high melting point metal layer continuous with the first high melting point metal layer.
3 more elements
A protective device comprising:
- an electrically insulating substrate;
- a first electrode and a second electrode formed on the electrically insulating substrate;
- a heat source formed on the electrically insulating substrate or within the electrically insulating substrate;
- a heat source connection electrode electrically connected to the heat source;
- and
- a fuse element including a low melting point metal layer and a first high melting point metal layer having a higher melting point than a melting point of the low melting point metal layer and connected across the first electrode and the second electrode and the heat source connection electrode, the low melting point metal layer and the first high melting point metal layer being layered,
- wherein the fuse element includes a restricting portion including a high melting point material having a higher melting point than the melting point of the low melting point metal layer and configured to restrict flowing of a low melting point metal or deformation of a layered body constituted by the first high melting point metal layer and the low melting point metal layer, and
- in the restricting portion, side surfaces of one or more holes provided in the low melting point metal layer are at least partially covered by a second high melting point metal layer continuous with the first high melting point metal layer.
5 more elements
A short-circuit device comprising:
- a first electrode;
- a second electrode provided adjacent to the first electrode;
- a fusible electrical conductor supported by the first electrode and configured to agglomerates across the first electrode and the second electrode and short-circuit the first electrode and the second electrode by melting;
- and
- a heat source configured to heat the fusible electrical conductor,
- wherein the fusible electrical conductor includes a low melting point metal layer and a first high melting point metal layer having a higher melting point than a melting point of the low melting point metal layer, the low melting point metal layer and the first high melting point metal layer being layered, and a restricting portion including a high melting point material having a higher melting point than the melting point of the low melting point metal layer and configured to restrict flowing of a low melting point metal or deformation of a layered body constituted by the first high melting point metal layer and the low melting point metal layer, and
- in the restricting portion, side surfaces of one or more holes provided in the low melting point metal layer are at least partially covered by a second high melting point metal layer continuous with the first high melting point metal layer.
4 more elements
A switching device comprising:
- an electrically insulating substrate;
- a first heat source and a second heat source formed on the electrically insulating substrate or within the electrically insulating substrate;
- a first electrode and a second electrode provided adjacent to each other on the electrically insulating substrate;
- a third electrode provided on the electrically insulating substrate and electrically connected to the first heat source;
- a first fusible electrical conductor connected across the first electrode and the third electrode;
- a fourth electrode provided on the electrically insulating substrate and electrically connected to the second heat source;
- a fifth electrode provided adjacent to the fourth electrode on the electrically insulating substrate;
- and
- a second fusible electrical conductor connected from the second electrode to the fifth electrode across the fourth electrode,
- wherein the first fusible electrical conductor and the second fusible electrical conductor include a low melting point metal layer and a first high melting point metal layer having a higher melting point than a melting point of the low melting point metal layer, the low melting point metal layer and the first high melting point metal layer being layered, and a restricting portion including a high melting point material having a higher melting point than the melting point of the low melting point metal layer and configured to restrict flowing of a low melting point metal or deformation of a layered body constituted by the first high melting point metal layer and the low melting point metal layer,
- the second fusible electrical conductor is melted by electric heating of the second heat source and breaks a path between the second electrode and the fifth electrode, and
- the first fusible electrical conductor is melted by electric heating of the first heat source and causes a short-circuit between the first electrode and the second electrode.
9 more elements
A fuse element comprising:
- a surface irregularity portion;
- a low melting point metal layer;
- and
- a first high melting point metal layer layered on both front and rear surfaces of the low melting point metal layer and having a higher melting point than a melting point of the low melting point metal layer,
- wherein the surface irregularity portion is an embossed part provided in a layered body constituted by the low melting point metal layer and the first high melting point metal layer.
2 more elements
A fuse element comprising:
- a surface irregularity portion;
- a low melting point metal layer;
- and
- a first high melting point metal layer layered on both front and rear surfaces of the low melting point metal layer and having a higher melting point than a melting point of the low melting point metal layer,
- wherein the surface irregularity portion is one or more groove portions provided in a layered body constituted by the low melting point metal layer and the first high melting point metal layer, and
- wall surfaces of the groove portions are at least partially covered by a second high melting point metal layer continuous with the first high melting point metal layer.
3 more elements
A fuse element comprising:
- a low melting point metal layer;
- and
- a first high melting point metal layer layered on both front and rear surfaces of the low melting point metal layer and having a higher melting point than a melting point of the low melting point metal layer,
- wherein one or more penetrating slits are provided in a layered body constituted by the low melting point metal layer and the first high melting point metal layer, and wall surfaces of the one or more penetrating slits are at least partially covered by a second high melting point metal layer continuous with the first high melting point metal layer.
1 more element
Dependencies are inferred from the claim text.