Multi-element fuse array

• US 6,878,004 B2
• Filed: 03/04/2002
• Issued: 04/12/2005
• Est. Priority Date: 03/04/2002
• Status: Active Grant

• Current Assignee: Littelfuse Incorporated
• Original Assignee: Littelfuse Incorporated
• Inventors: Oh, Seibang
• Primary Examiner(s): Zarroli, Michael C.
• Application Number:
  US10/090,896
• Publication Number:
  US 20030166352A1
• Time in Patent Office: 1,135 Days
• Field of Search: 439/76.2, 439/250, 439/849, 439/949
• US Class Current: 439/250
• CPC Class Codes: H01H 2085/208 specially adapted for vehicles
• CPC Class Codes: H01H 2085/266 with replacement of a fuse which is part of a printed circuit
• CPC Class Codes: H01H 85/2035 for miniature fuses with parallel side contacts

Abstract

The present invention provides a fuse block having a plurality of fuse connections. The fuse connections include an array of embedded terminals that contact the initially provided fuse elements. When one of the fuse elements opens, an operator remakes the open connection by inserting an external replacement fuse. The fuse connections therefore eliminate the need to initially provide separate external fuses. In an embodiment, the terminals include fork shaped projections that receive one of the terminals of the replacement fuse, which also eliminates the need for additional female inserts commonly found in automobile fuse blocks. The fuse block is simple, wherein a plurality of same may be provided in an automobile to cut down on long lengths of wire running from load devices to a traditional, single centrally located fuse block.

Claims

1. A fuse block comprising:

a body;

a plurality of terminals fixed to and exposed on at least one side of the body, the terminals each including a replacement fuse connection portion;

a fuse element visible without having to remove one of the replacement fuses if the replacement fuse is connected to the connection portions of two of the terminals fixed to the body, the fuse element contacting the terminals at a location separate from each of the replacement fuse connection portions;

at least three pairs of the terminals arranged in the body; and

a single terminal bus in electrical communication with one of the terminals of each of the pairs.

2. The fuse block of claim 1, wherein the body includes a plastic piece.

3. The fuse block of claim 1, wherein the fuse element includes a resistance wire, a punched element or spiral winding.

4. The fuse block of claim 1, wherein the fuse element is surface mounted.

5. The fuse block of claim 4, wherein the surface mounted fuse element includes multiple strands.

6. The fuse block of claim 4, wherein the surface mounted fuse element includes means for electrically connecting the fuse element to the terminals.

7. The fuse block of claim 1, wherein the terminal pairs are arranged in a row.

8. The fuse block of claim 1, which includes a plurality of fuse elements that each connect the terminals of one of the pairs.

9. The fuse block of claim 8, wherein at least two of the plurality of fuse elements have different ratings.

10. The fuse block of claim 1, wherein the terminals of the terminal bus are formed integrally with one another.

11. The fuse block of claim 1, wherein the terminals of the terminal bus are formed on a strip.

12. The fuse block of claim 1, wherein the terminals supplied by the bus are electrically connected to a power supply line.

13. A fuse block comprising:

a plurality of rows of pairs of terminals, the terminals each including a replacement fuse connection portion, the terminals of at least two pairs of each row being electrically connected by a fuse element, each fuse element visible to a person viewing the rows of terminals without having to remove a replacement fuse located adjacent to the fuse element.

14. The fuse block of claim 13, wherein at least two terminals from at least one of the rows are commonly bussed.

15. The fuse block of claim 13, wherein a common bus supplies one of the terminals of each of the pairs of at least one of the rows.

16. The fuse block of claim 15, wherein the common bus includes an integrally formed strip of terminals.

17. The fuse block of claim 13, wherein at least two adjacent pairs of terminals within the same row of terminal pairs have different fuse amperage ratings.

18. The fuse block of claim 13, wherein at least two adjacent pairs of terminals in different rows of terminal pairs have different fuse amperage ratings.

19. A fuse block comprising:

a body; and

first, second and third sets of terminals positioned in the body, wherein one of the terminals from the second set is electrically connected to one of the terminals of the first and third sets by at least two fuse elements, the terminal from the second set configured and arranged to connect to a portion of each of at least two replacement fuses.

20. The fuse block of claim 19, wherein the first, second and third sets of terminals are arranged in separate rows.

21. The fuse block of claim 20, wherein the first and third rows are outer rows and are staggered.

22. The fuse block of claim 19, which includes a plurality of fuse elements that individually contact at least two terminals from the first, second and third sets of terminals.

23. The fuse block of claim 19, wherein at least two terminals from one of the first, second and third sets of terminals are electrically connected.

24. The fuse block of claim 19, wherein at least two terminals from one of the first, second and third sets of terminals are provided on a strip.

25. The fuse block of claim 19, wherein each of the terminals in one of the sets of terminals is electrically connected to a power supply line.

26. The fuse block of claim 19, wherein the second set of terminals is positioned between the other two sets, and wherein the terminals of the second set are electrically connected to a power supply line.