High current fuse block

Patent metadata

Field	Value
Publication number	US-11037750-B2
Application number	US-201816130374-A
Country	US
Kind code	B2
Filing date	Sep 13, 2018
Priority date	Sep 13, 2018
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A power distribution box assembly can include a power distribution box housing, a fuse block, and a plurality of eyelet terminals. The fuse block can include a stamped busbar assembly, a plurality of studs, and a housing. The stamped busbar assembly can include a main power supply portion, a plurality of fuse elements, and a plurality of terminal connecting portions coupled to the plurality of fuse elements. Each of the plurality of terminal connecting portions can: (i) extend from its respective fuse element in a terminal direction that is orthogonal to both directions that the main power supply portion and the fuse elements extend.

First claim

What is claimed is:

1. A fuse block, comprising:
a stamped busbar assembly comprising:
a main power supply portion extending in a longitudinal direction from a first end to a second end, the main power supply portion having a rectangular shaped body with a first side edge and a second side edge opposite the first side edge, the first and second side edges extending from the first end to the second end,
a plurality of fuse elements extending from the second side edge of the main power supply portion in a fuse direction orthogonal to the longitudinal direction, and
a plurality of terminal connecting portions coupled to the plurality of fuse elements, each of the plurality of terminal connecting portions: (i) extending from its respective fuse element in a terminal direction that is orthogonal to both the longitudinal direction and the fuse direction, and (ii) defining a stud aperture;

a plurality of studs corresponding to the plurality of terminal connecting portions, respectively, each of the plurality of studs being arranged within a corresponding stud aperture; and
a housing at least partially covering the stamped busbar assembly, the housing comprising an insulative material and formed by over-molding the stamped busbar assembly and the plurality of studs, the housing including an access aperture corresponding to each of the plurality of studs and configured to receive an eyelet terminal for coupling to a respective stud and terminal connecting portion,
wherein the main power supply portion defines a power input aperture configured to receive a power distribution box stud,
wherein the housing comprises a first portion over-molding at least one first stud of the plurality of studs and a second portion over-molding at least one second stud of the plurality of studs, the first portion and the second portion being arranged in a linear shape in an initial configuration and the first portion and the second portion being arranged to form an L-shape in a final configuration, and
wherein the housing further comprises an index feature associated with at least one particular access aperture and associated particular terminal connecting portion, wherein the index feature inhibits coupling of the eyelet terminal with the particular terminal connecting portion when the eyelet terminal lacks a corresponding index mating feature.

2. The fuse block of claim 1 , wherein the power input aperture is defined in a power input flange that extends in the fuse direction.

3. The fuse block of claim 1 , further comprising a plurality of transparent fuse covers corresponding to the plurality of fuse elements.

4. The fuse block of claim 1 , wherein the housing further comprises one or more insulating walls, each insulating wall of the one or more insulating walls being arranged between adjacent terminal connecting portions.

5. The fuse block of claim 1 , wherein the housing further comprises a first dovetail feature on an exterior surface of the housing, wherein the first dovetail feature is configured to mate with a corresponding second dovetail feature on a power distribution box to which the housing is coupled.

6. The fuse block of claim 5 , wherein the first and second dovetail features are configured to inhibit movement of the housing along two axes.

7. The fuse block of claim 1 , wherein the stamped busbar assembly is formed by (i) providing a single piece of busbar material arranged in a single plane, (ii) stamping the single piece of busbar material to form the stud apertures, the power input aperture, and the plurality of fuse elements, and (iii) bending the single piece of busbar material to arrange the plurality of terminal connecting portions to extend in the terminal direction.

8. The fuse block of claim 7 , wherein the fuse block is formed by (i) overmolding the stamped busbar assembly to form the first and second portions of the housing, (ii) installing a plurality of transparent fuse covers corresponding to the plurality of fuse elements to cover the fuse elements, and (iii) bending the main power supply portion such that the first portion and the second portion are arranged to form the L-shape in the final configuration.

9. The fuse block of claim 8 , wherein the first and second portions of the housing having corresponding locking features, and wherein, in the final configuration, the first portion of the housing is fixedly secured to the second portion of the housing via the locking features.

10. A fuse block, comprising:
a stamped busbar assembly comprising:
a main power supply portion extending in a longitudinal direction from a first end to a second end, the main power supply portion having a rectangular shaped body with a first side edge and a second side edge opposite the first side edge, the first and second side edges extending from the first end to the second end,
a plurality of fuse elements extending from the second side edge of the main power supply portion in a fuse direction orthogonal to the longitudinal direction, and
a plurality of terminal connecting portions coupled to the plurality of fuse elements, each of the plurality of terminal connecting portions: (i) extending from its respective fuse element in a terminal direction that is orthogonal to both the longitudinal direction and the fuse direction, and (ii) defining a stud aperture;

a plurality of studs corresponding to the plurality of terminal connecting portions, respectively, each of the plurality of studs being arranged within a corresponding stud aperture; and
a housing at least partially covering the stamped busbar assembly, the housing comprising an insulative material and formed by over-molding the stamped busbar assembly and the plurality of studs, the housing including an access aperture corresponding to each of the plurality of studs and configured to receive an eyelet terminal for coupling to a respective stud and terminal connecting portion,
wherein the main power supply portion defines a power input aperture configured to receive a power distribution box stud,
wherein the housing comprises a first portion over-molding at least one first stud of the plurality of studs and a second portion over-molding at least one second stud of the plurality of studs, the first portion and the second portion being arranged to form an L-shape in a final configuration, and
wherein the housing further comprises an index feature associated with at least one particular access aperture and associated particular terminal connecting portion, wherein the index feature inhibits coupling of the eyelet terminal with the particular terminal connecting portion when the eyelet terminal lacks a corresponding index mating feature.

11. The fuse block of claim 10 , wherein the power input aperture is defined in a power input flange that extends in the fuse direction.

12. The fuse block of claim 10 , further comprising a plurality of transparent fuse covers corresponding to the plurality of fuse elements.

13. The fuse block of claim 10 , wherein the housing further comprises one or more insulating walls, each insulating wall of the one or more insulating walls being arranged between adjacent terminal connecting portions.

14. The fuse block of claim 10 , wherein the housing further comprises a first dovetail feature on an exterior surface of the housing, wherein the first dovetail feature is configured to mate with a corresponding second dovetail feature on a power distribution box to which the housing is coupled.

15. The fuse block of claim 14 , wherein the first and second dovetail features are configured to inhibit movement of the housing along two axes.

Assignees

• Yazaki North America Inc

Inventors

• Gaitan Max Noel
• Ng Jen Vun
• Liu Jeffrey Lixin

Classifications

• B60R16/0238 Primary

  Electrical distribution centers · CPC title

• H01H2085/208

  specially adapted for vehicles · CPC title

• H01H85/1755 Primary

  composite casing · CPC title

• H01H85/044

  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 title

• H01H85/20

  Bases for supporting the fuse; Separate parts thereof · CPC title