Fuse holder

• US 6,726,506 B2
• Filed: 02/19/2002
• Issued: 04/27/2004
• Est. Priority Date: 02/22/2001
• Status: Expired due to Fees

• Current Assignee: JST Manufacturing Company Limited
• Original Assignee: JST Manufacturing Company Limited
• Inventors: Van Dessel, Sonny, Fukumori, Shuichi
• Primary Examiner(s): Ta, Tho D.
• Assistant Examiner(s): TSUKERMAN, LARISA Z
• Application Number:
  US10/080,151
• Publication Number:
  US 20020115348A1
• Time in Patent Office: 798 Days
• Field of Search: 439/621, 439/82, 439/83, 439/717, 439/856, 439/857, 439/594, 439/337, 361/767
• US Class Current: 439/620.26
• CPC Class Codes: H01H 2085/2085 Holders for mounting a fuse on a printed circuit
• CPC Class Codes: H01H 2085/209 Modular assembly of fuses or holders, e.g. side by side; combination of a plurality of identical fuse units
• CPC Class Codes: H01H 85/2035 for miniature fuses with parallel side contacts

Abstract

A fuse holder includes: a holder housing, in which a chamber for holding blade terminals and at least a part of the body of a fuse is formed with wide walls at the front and the rear and narrow walls on the right and the left; two coupling parts, which are provided on the holder housing to disconnectably fit the holder housing onto holder housings of two other adjacent fuse holders; and two contacts, each of which has an intermediate part fixed to the holder housing, a connecting part, at one end, extending into the chamber to fit with a blade terminal of the fuse, and a leg, at the other end, extending out of the holder housing to be soldered or press-fitted onto a printed circuit board.

Claims

1. A fuse holder, into which a blade type fuse, having a body and blade terminals protruding from the body, is fittable, said fuse holder comprising:

a holder housing having wide front and rear walls at the front and the rear and narrow right and left walls on the right and the left, wherein inner wall surfaces of these walls bound a chamber, which will hold the blade terminals and at least a part of the body of the blade type fuse inserted from a top side of the fuse holder,

first and second coupling parts that are provided on the holder housing and that are adapted to disconnectably fit the holder housing onto two other holder housings of two other adjacent fuse holders, wherein the first coupling part comprises two plates, which are provided on a first one of the walls and have free protruding ends opposed to each other, and in a plan view, one of the plates has an inverted L shape, and the other one of the plates has an inverted reversed L shape, and the second coupling part comprises ribs, which are provided on second and third ones of the walls, extend in a height direction, and are configured, located and adapted to be held between free protruding ends of an adjacent first coupling part and an adjacent first wall, on which the adjacent first coupling part is provided, of one of the other adjacent fuse holders, and

two contacts, each of which has an intermediate part fixed to the holder housing, a connecting part, at one end of the contact, extending into the chamber to fit with one of the blade terminals, and a leg, at another end of the contact, extending out of the holder housing and adapted to be soldered or press-fitted onto a printed circuit board.

2. The fuse holder as recited in claim 1, wherein the first one of the walls on which the two plates of the first coupling part are provided is the front wall, and the second and third ones of the walls on which the ribs of the second coupling part are provided are the right and left walls.

3. The fuse holder as recited in claim 1, wherein the connecting part of at least one of the contacts is formed into a fork shape, which can be flexibly expanded toward the front wall and the rear wall of the holder housing, and clearances are set between the connecting part and the front wall and the rear wall so as to allow limited deformation while limiting excessive deformation of the connecting part.

4. The fuse holder as recited in claim 1, wherein the intermediate parts of the contacts are press-fitted into a space among the walls of the holder housing.

5. The fuse holder as recited in claim 1, wherein the intermediate parts of the contacts are enveloped-cast in the holder housing.

6. The fuse holder as recited in claim 1, wherein the intermediate part of at least one of the contacts is enveloped-cast in an insert and this insert is fitted into a space among the walls of the holder housing.

7. The fuse holder as recited in claim 6, wherein the insert is formed of a material having a heat resistance superior to that of the holder housing.

8. The fuse holder as recited in claim 1, wherein the leg of at least one of the contacts is forked into two branches.

9. The fuse holder as recited in claim 1, wherein a protrusion is formed in the leg of at least one of the contacts.

10. The fuse holder as recited in claim 1, wherein the holder housing has the same color as that of the body of the fuse.

11. A fuse holder, into which a blade type fuse, having a body and blade terminals protruding from the body, is fittable, said fuse holder comprising:

a holder housing having wide front and rear walls at the front and the rear and narrow right and left walls on the right and the left, wherein inner wall surfaces of these walls bound a chamber, which will hold the blade terminals and at least a part of the body of the blade type fuse inserted from a top side of the fuse holder,

first and second coupling parts that are provided on the holder housing and that are adapted to disconnectably fit the holder housing onto two other holder housings of two other adjacent fuse holders, and

two contacts, each of which has an intermediate part fixed to the holder housing, a connecting part, at one end of the contact, extending into the chamber to fit with one of the blade terminals, and a leg, at another end of the contact, extending out of the holder housing and adapted to be soldered or press-fitted onto a printed circuit board,

wherein the intermediate parts of the two contacts are respectively enveloped-cast in respective inserts, which are coupled to each other, and which are respectively fitted into spaces among the walls of the holder housing.

12. The fuse holder as recited in claim 11, wherein the inserts are formed of a material having a heat resistance superior to that of the holder housing.

13. The fuse holder as recited in claim 11, wherein the connecting part of at least one of the contacts is formed into a fork shape, which can be flexibly expanded toward the front wall and the rear wall of the holder housing, and clearances are set between the connecting part and the front wall and the rear wall so as to allow limited deformation while limiting excessive deformation of the connecting part.

14. The fuse holder as recited in claim 11, wherein the leg of at least one of the contacts is forked into two branches.

15. The fuse holder as recited in claim 11, wherein a protrusion is formed in the leg of at least one of the contacts.

16. The fuse holder as recited in claim 11, wherein the holder housing has the same color as that of the body of the fuse.

17. A fuse holder, into which a blade type fuse, having a body and blade terminals protruding from the body, is fittable, said fuse holder comprising:

a holder housing having wide front and rear walls at the front and the rear and narrow right and left walls on the right and the left, wherein inner wall surfaces of these walls bound a chamber, which will hold the blade terminals and at least a part of the body of the blade type fuse inserted from a top side of the fuse holder,

first and second coupling parts that are provided on the holder housing and that are adapted to disconnectably fit the holder housing onto two other holder housings of two other adjacent fuse holders, and

two contacts, each of which has an intermediate part fixed to the holder housing, a connecting part, at one end of the contact, extending into the chamber to fit with one of the blade terminals, and a leg, at another end of the contact, extending out of the holder housing and adapted to be soldered or press-fitted onto a printed circuit board,

wherein the holder housing further has a bottom opposite the top side, and the bottom is provided with two bosses protruding at positions that are asymmetric relative to each other with respect to a line that runs, when seen from the bottom, between the front and rear walls approximately in parallel with the front and rear walls.

18. The fuse holder as recited in claim 17, wherein the connecting part of at least one of the contacts is formed into a fork shape, which can be flexibly expanded toward the front wall and the rear wall of the holder housing, and clearances are set between the connecting part and the front wall and the rear wall so as to allow limited deformation while limiting excessive deformation of the connecting part.

19. The fuse holder as recited in claim 17, wherein the intermediate part of at least one of the contacts is enveloped-cast in an insert and this insert is fitted into a space among the walls of the holder housing.

20. The fuse holder as recited in claim 17, wherein the insert is formed of a material having a heat resistance superior to that of the holder housing.