Fuse unit and method of manufacturing fuse unit

• US 20010011939A1
• Filed: 02/09/2001
• Published: 08/09/2001
• Est. Priority Date: 02/09/2000
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Matsumura, Norio, Hama, Yasuyuki, Inaba, Shigemitsu
• Granted Patent: US 6,509,824 B2
• Time in Patent Office: Days
• US Class Current: 337/265
• CPC Class Codes: H01H 2085/025 Structural association with a binding post of a storage battery
• CPC Class Codes: H01H 2085/0555 Input terminal connected to a plurality of output terminals, e.g. multielectrode
• CPC Class Codes: H01H 85/044 General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified H01H85/046 - H01H85/048 take precedence
• CPC Class Codes: Y10T 29/49107 Fuse making

Abstract

An electrically conductive fuse element including fusible portions has a hinge portion provided at a middle portion thereof. A resin body is divided into resin body parts so that the resin body parts are provided around the fuse element in such a way as to be separated by the hinge portion. One of the resin body parts is bent from the hinge portion. The fuse element has abutting faces, against which the resin body parts are abutted in a bent state, and engaging means for the resin body parts. A connector housing is provided on the resin body part. Further, a terminal is provided at one of plate portions of the fuse element. Power supply connecting portions and terminal connecting portions are provided in the other plate portion connected to the plate portion through the hinge portion.

Claims

1. A fuse unit comprising:

an electrically conductive fuse element including at least one fusible portion;

a hinge portion provided at said electrically conductive fuse element so that said electrically conductive fuse element is separated into a first fuse element and a second fuse element by said hinge portion and is bendable from said hinge portion;

a first resin body provided at said first fuse element; and

a second resin body provided at said second fuse element.

2. The fuse unit according to

claim 1

, wherein said first and second resin bodies are respectively provided with abutting faces abutted together when said electrically conductive element is bent from said hinge portion.

3. The fuse unit according to

claim 1

further comprising an engaging mechanism for engaging said first and second resin bodies each other when said electrically conductive element is bent from said hinge portion.

4. The fuse unit according to

claim 1

wherein at least one first terminal is provided at said electrically conductive fuse element through said corresponding fusible portion, at least one connector housing for accommodating said at least one first terminal is provided in at least one of said first and second resin body.

5. The fuse unit according to

claim 4

, wherein a plurality of said terminals are provided in parallel with one another at said first fuse element, a power supply connecting portion is provided at said second fuse element.

6. The fuse unit according to

claim 5

, wherein at least one terminal connecting portion is provided at said second fuse element.

7. The fuse unit according to

claim 5

, wherein said second fuse element is formed of a first fuse plate connected to said hinge portion and a second fuse plate connected to said first fuse plate through one of said fusible portion, one of said at least one terminal connecting portion for a second terminal is provided at said first fuse plate, said power supply connecting portion is provided at said second fuse plate.

8. The fuse unit according to

claim 7

, wherein said second fuse element is narrower than said first fuse element, a third terminal is placed in a side space at a side of said second fuse element and connected to said power supply connecting portion.

9. The fuse unit according to

claim 7

, wherein said first fuse plate is narrower than said first fuse element, said second fuse plate to which said third terminal is connected is placed in a side space at a side of said first fuse plate.

10. The fuse unit according to

claim 6

, wherein said electrically conductive fuse element is divided in a direction perpendicular to a direction, in which said hinge portion extends, into a first division portion including a part of said first fuse element and a second division portion including the other part of said first fuse element, said first division portion is connected to said second division portion through one of said fusible portions, said first and second division portion are respectively provided with said first terminals and a second terminal.

11. The fuse element according to

claim 10

, wherein said third terminals are positioned between said first fuse element and a battery.

12. The fuse element according to

claim 10

, wherein said first terminal is for connecting an alternator, said second terminal is for connecting a starter motor, a current branched from said first terminal is supplied to an electric connection box through said fusible portion and said first terminal.

13. A method of manufacturing a fuse unit comprising the steps of:

providing an electrically conductive fuse element including at least one fusible portion;

forming a hinge portion at said electrically conductive fuse element for dividing said electrically conductive fuse element into a first fuse element and a second fuse element; and

integrally forming an insulating resin material with said first and second fuse elements in a state in which said electrically conductive fuse element is flattened out.

14. The method of manufacturing the fuse unit according to

claim 13

, wherein said insulating resin material is formed with opposite sides of said first and second fuse elements.

15. The method of manufacturing the fuse unit according to

claim 14

, wherein a space, to which said at least one fusible portion is exposed, is formed at said insulating resin material.

16. The method of manufacturing the fuse unit according to

claim 15

, wherein a connector housing for accommodating a terminal connected to one of said at least one fusible portion is formed at said insulating resin material.

17. The method of manufacturing the fuse unit according to

claim 15

, wherein a exposed portion of said second fuse element corresponding to a terminal contact portion is formed at said insulating resin material.