Electric connection box and wire harness

Patent metadata

Field	Value
Publication number	US-9953794-B2
Application number	US-201615153151-A
Country	US
Kind code	B2
Filing date	May 12, 2016
Priority date	May 29, 2015
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

An electric connection box includes a circuit protection component, a housing, and a metal heat conductive member. The circuit protection component is provided with a metal circuit protection member. The circuit protection member includes a power supply side connector that is electrically connected to power supply side electric wires connected to a power supply side, load side connectors that are electrically connected to load side electric wires connected to a load side, and fuse elements interposed between the power supply side connector and the load side connectors. The housing is formed of an insulating material, and includes a protection component holding unit that holds the circuit protection component. The heat conductive member includes a contacting portion that contacts the power supply side connector in a state where the protection component holding unit holds the circuit protection component, and a heat conducting portion connected to the contacting portion.

First claim

What is claimed is:

1. An electric connection box comprising:
a circuit protection component that is provided with a metal circuit protection member, the circuit protection member including a power supply side connector that is connected to power supply side electric wires connected to a power supply side, load side connectors, and fuse elements that are interposed between the power supply side connector and the load side connectors;
a housing that is formed of an insulating material, and includes a protection component holding unit that holds the circuit protection component; and
a metal heat conductive member that includes a contacting portion contacting the power supply side connector in a state where the protection component holding unit holds the circuit protection component, and a heat conducting portion connected to the contacting portion, wherein
each of the contacting portion and the heat conducting portion is a flat plate portion of the metal heat conductive member.

2. The electric connection box according to claim 1 , wherein
the protection component holding unit is a protection component holding body that is housed and held in the housing and being independent from the housing.

3. The electric connection box according to claim 1 , wherein
the protection component holding unit includes the heat conductive member in a state where the heat conductive member is communicated with outside of the protection component holding unit.

4. The electric connection box according to claim 2 , wherein
the protection component holding unit includes the heat conductive member in a state where the heat conductive member is communicated with outside of the protection component holding unit.

5. The electric connection box according to claim 1 , wherein
the housing is interposed between the load side connectors and the load, and holds an electric component that is electrically connected to the load side connectors and the load.

6. The electric connection box according to claim 2 , wherein
the housing is interposed between the load side connectors and the load, and holds an electric component that is electrically connected to the load side connectors and the load.

7. The electric connection box according to claim 3 , wherein
the housing is interposed between the load side connectors and the load, and holds an electric component that is electrically connected to the load side connectors and the load.

8. The electric connection box according to claim 1 , wherein
the circuit protection member includes the load side connector and the fuse element for each load that is to be connected to the electric connection box.

9. The electric connection box according to claim 2 , wherein
the circuit protection member includes the load side connector and the fuse element for each load that is to be connected to the electric connection box.

10. The electric connection box according to claim 3 , wherein
the circuit protection member includes the load side connector and the fuse element for each load that is to be connected to the electric connection box.

11. The electric connection box according to claim 5 , wherein
the circuit protection member includes the load side connector and the fuse element for each load that is to be connected to the electric connection box.

12. A wire harness comprising:
power supply side electric wires that are connected to a power supply side;
load side electric wires that are connected to a load side;
a circuit protection component that is provided with a metal circuit protection member, the circuit protection member including a power supply side connector that is electrically connected to the power supply side electric wires, load side connectors that are electrically connected to the load side electric wires, and fuse elements that are interposed between the power supply side connector and the load side connectors;
a housing that is formed of an insulating material and, includes a protection component holding unit that holds the circuit protection component; and
a metal heat conductive member that includes a contacting portion contacting the power supply side connector in a state where the protection component holding unit holds the circuit protection component, and a heat conducting portion connected to the contacting portion, wherein
each of the contacting portion and the heat conducting portion is a flat plate portion of the metal heat conductive member.

13. The wire harness according to claim 12 , wherein
the power supply side connector is sandwiched between the contacting portion and the terminal.

14. The electric connection box according to claim 1 , wherein
each of the contacting portion and the power supply side connector is a flat plate portion that includes a through hole.

15. The electric connection box according to claim 1 , wherein
the circuit protection component further includes a housing member that encloses the fuse elements and exposes the power supply connector and the load side connectors, and the heat conducting portion is outside of the housing.

16. The electric connection box according to claim 1 , wherein
the protection component holding unit is a protection component holding body, the heat conducting portion is mounted to the protection component holding body, and the circuit protection component is outside of the protection component holding body.

17. The electric connection box according to claim 1 , wherein
the protection component holding unit is a protection component holding body that includes a internal space, an aperture in communication with the internal space, and a supporting portion outside of the internal space, the internal space receives the metal heat conductive member therein, and the supporting portion receives the contacting portion thereon.

18. The electric connection box according to claim 1 , wherein
the circuit protection component further includes a housing member that encloses the fuse elements and exposes the power supply connector and the load side connectors, and the housing includes a housing engaging portion, and
the protection component holding unit is a protection component holding body, the protection component holding body includes a internal space, an aperture in communication with the internal space, a supporting portion outside of the internal space, and a body engaging portion, the internal space receives the metal heat conductive member therein, and the supporting portion receives the contacting portion thereon, and the body engaging portion engages the housing engaging portion such that the housing member is secured to the protection component holding body.

Assignees

• Yazaki Corp

Inventors

• Ikeda Tatsuhiko
• Kakimi Takaaki

Classifications

• H01H85/0241

  Structural association of a fuse and another component or apparatus (switches with built-in fuses H01H9/10, spark-gap arresters H01H85/44, transformers and inductances H01F27/402, capacitors H01G2/14, lamps H01K1/66, semiconductors H10W20/493 or H10W42/80) · CPC title

• H01H2085/208

  specially adapted for vehicles · CPC title

• H01H85/20 Primary

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