Multiple element fuse

Patent metadata

Field	Value
Publication number	US-10325745-B2
Application number	US-201715713892-A
Country	US
Kind code	B2
Filing date	Sep 25, 2017
Priority date	Sep 25, 2017
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

Approaches herein provide a multiple element fuse including a first fuse element having a first pair of terminals joined by a first fusible link, and a second fuse element including a second pair of terminals joined by a second fusible link. The first pair of terminals may be directly physically coupled with the second pair of terminals. In some embodiments, the first pair of terminals and the second pair of terminals are stacked relative to one another and joined by one or more linking elements, thus causing the first fusible link and the second fusible link to extend parallel to one another. In some embodiments, a first plurality of terminal pairs are integrally linked adjacent one another along a same plane, and then subsequently coupled to a second plurality of terminal pairs.

First claim

The invention claimed is:

1. A multiple element fuse comprising:
a first fuse element including a first pair of terminals joined by a first fusible link;
a second fuse element including a second pair of terminals joined by a second fusible link, wherein the first pair of terminals is directly physically coupled with the second pair of terminals; and
a linking element extending between interior edges of each terminal of the first and second pairs of terminals, wherein the linking element is directly coupled to just the first and second pairs of terminals, and wherein no linking element directly couples the first fusible link and the second fusible link.

2. The multiple element fuse according to claim 1 , wherein the first pair of terminals and the second pair of terminals each comprises:
a terminal body including an inner surface and an outer surface, wherein the inner surface of the first pair of terminals and the inner surface of the second pair of terminals are parallel and in direct physical contact with one another; and
an opening formed through the terminal body.

3. The multiple element fuse according to claim 2 , the terminal body further including an edge connecting the inner surface and the outer surface, wherein the linking element is integrally formed with the edge.

4. The multiple element fuse according to claim 1 , wherein the first fusible link and the second fusible link extend parallel to one another.

5. The multiple element fuse according to claim 1 , wherein the first fusible link includes a first set of shoulder regions connected to the first pair of terminals, and wherein the second fusible link includes a second set of shoulder regions connected to the second pair of terminals.

6. The multiple element fuse according to claim 5 , wherein the first and second sets of shoulder regions have a curved shape.

7. The multiple element fuse according to claim 1 , wherein the first pair of terminals and the first fusible link extend parallel to one another along different planes.

8. The multiple element fuse according to claim 1 , wherein the second pair of terminals and the second fusible link extend parallel to one another along different planes.

9. The multiple element fuse according to claim 1 , further comprising a third pair of terminals joined by a third fusible link, wherein the third pair of terminals is directly physically coupled with at least one of: the first pair of terminals and the second pair of terminals.

10. A method of forming a multiple element fuse, comprising:
providing a first fuse element including a first pair of terminals joined by a first fusible link;
providing a second fuse element including a second pair of terminals joined by a second fusible link;
connecting the first pair of terminals to the second pair of terminals using a linking element, wherein the linking element is directly coupled to just the first and second pairs of terminals, and wherein no linking element directly couples the first fusible link and the second fusible link; and
coupling the first pair of terminals directly to the second pair of terminals such that the first pair of terminals and the second pair of terminals are oriented parallel to one another along different planes.

11. The method according to claim 10 , further comprising stacking the second fuse element atop the first fuse element.

12. The method according to claim 10 , further comprising:
providing the first fuse element adjacent to the second fuse element, wherein the first and second fuse element each include inner surfaces extending along a same plane, and wherein the first and second fuse element are connected by the linking element; and
directly coupling the inner surface of the first fuse element to the inner surface of the second fuse element.

13. The method according to claim 10 , further comprising bending the linking element to cause the inner surface of the first fuse element to abut the inner surface of the second fuse element.

14. The method according to claim 10 , further comprising:
providing the first fusible link with a first set of shoulder regions connected to the first pair of terminals and the second fusible link with a second set of shoulder regions connected to the second pair of terminals; and
bending the first and second set of shoulder regions such that the first pair of terminals and the first fusible link extend parallel to one another along different planes and the second pair of terminals and the second fusible link extend parallel to another along different planes.

15. The method according to claim 10 , further comprising providing a third pair of terminals joined by a third fusible link, wherein the third pair of terminals is directly physically coupled with at least one of: the first pair of terminals and the second pair of terminals.

16. A multiple element fuse comprising:
a first fuse element including a first pair of terminals joined by a first fusible link;
a second fuse element including a second pair of terminals joined by a second fusible link, wherein the first pair of terminals and second pair of terminals each include an inner surface and an outer surface, and wherein the inner surface of the first pair of terminals and the inner surface of the second pair of terminals are parallel and in direct physical contact with one another; and
a linking element integrally formed with the first pair of terminals and the second pair of terminals, wherein the linking element is directly coupled to just the first and second pairs of terminals, and wherein no linking element directly couples the first fusible link and the second fusible link.

17. The multiple fuse element of claim 16 , further comprising:
a first plurality of pairs of terminals including the first pair of terminals, wherein the first plurality of pairs of terminals are integrally coupled together and extend along a same plane; and
a second plurality of pairs of terminals including the second pair of terminals, wherein the second plurality of pairs of terminals are integrally coupled together and extend along another same plane, and wherein the first plurality of pairs of terminals and the second plurality of pairs of terminals are parallel and stacked relative to one another.

Assignees

• Littelfuse Inc

Inventors

• Lasini Derek
• Schlaak Michael
• Miller Matthew
• Yurkanin Matthew

Classifications

• H01H85/12

  Two or more separate fusible members in parallel · CPC title

• H01H85/153

  Knife-blade-end contacts · CPC title

• H01H85/56

  the intermediate or auxiliary part having side contacts for plugging into the base, e.g. bridge-carrier type · CPC title

• H01H85/36

  Means for applying mechanical tension to fusible member · CPC title

• H01H85/143 Primary

  Electrical contacts; Fastening fusible members to such contacts · CPC title