Circuit assembly and electrical junction box

Patent metadata

Field	Value
Publication number	US-9731666-B2
Application number	US-201515126441-A
Country	US
Kind code	B2
Filing date	Apr 1, 2015
Priority date	Apr 3, 2014
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

An electrical junction box to be attached to a vehicle includes a heat dissipation member having a base plate portion that has a plate shape having a first surface and a second surface, a plurality of fins that protrude from the second surface, and a pedestal that is provided protruding from the second surface and that has a smaller protruding height from the second surface than the fins as well as a bracket having a pedestal attachment portion that is attached to the pedestal and a vehicle body attachment portion that is continuous with that attachment portion, extends in a direction away from the heat dissipation member, and is attachable to a vehicle body of the vehicle.

First claim

The invention claimed is:

1. An electrical junction box to be attached to a vehicle, the electrical junction box comprising:
a heat dissipation member having a base plate portion that has a plate shape having a first surface and a second surface, a plurality of fins that protrude from the second surface, and a pedestal that is provided protruding from the second surface and that has a smaller protruding height from the second surface than the fins; and
a bracket having a pedestal attachment portion that is attached to the pedestal and a vehicle body attachment portion that is continuous with the pedestal attachment portion, the vehicle body attachment portion extends in a direction away from the heat dissipation member, and wherein the vehicle body attachment portion is attachable to a vehicle body of the vehicle.

2. The electrical junction box according to claim 1 ,
wherein the bracket has a bottom wall, and the bottom wall is provided with a reinforcement member protruding in a direction that intersects the bottom wall.

3. The electrical junction box according to claim 1 ,
wherein the bracket has a bottom wall and a side wall extending upright from a side edge of the bottom wall, and
the side wall is configured to come into contact with the pedestal from a direction that intersects a direction in which the pedestal protrudes from the second surface.

4. The electrical junction box according to claim 1 ,
wherein the bracket has a bottom wall, the bottom wall having a rib that protrudes from the bottom wall and extends in the direction away from the heat dissipation member, and
the rib is accommodated in an accommodating recess provided in the pedestal.

5. The electrical junction box according to claim 1 ,
wherein one of the pedestal and the pedestal attachment portion has an engagement portion that is formed protruding toward the other of the pedestal and the pedestal attachment portion, and
an engagement receiving portion engaging the engagement portion is formed in the other of the pedestal and the pedestal attachment portion.

6. The electrical junction box according to claim 1 , further including a case, the case is attached to the first surface of the base plate portion.

7. The electrical junction box according to claim 2 ,
wherein the bracket has a bottom wall and a side wall extending upright from a side edge of the bottom wall, and
the side wall is configured to come into contact with the pedestal from a direction that intersects a direction in which the pedestal protrudes from the second surface.

8. The electrical junction box according to claim 2 ,
wherein the bracket has a bottom wall, the bottom wall having a rib that protrudes from the bottom wall and extends in the direction away from the heat dissipation member, and
the rib is accommodated in an accommodating recess provided in the pedestal.

9. The electrical junction box according to claim 3 ,
wherein the bracket has a bottom wall, the bottom wall having a rib that protrudes from the bottom wall and extends in the direction away from the heat dissipation member, and
the rib is accommodated in an accommodating recess provided in the pedestal.

10. The electrical junction box according to claim 2 ,
wherein one of the pedestal and the pedestal attachment portion has an engagement portion that is formed protruding toward the other of the pedestal and the pedestal attachment portion, and
an engagement receiving portion engaging the engagement portion is formed in the other of the pedestal and the pedestal attachment portion.

11. The electrical junction box according to claim 3 ,
wherein one of the pedestal and the pedestal attachment portion has an engagement portion that is formed protruding toward the other of the pedestal and the pedestal attachment portion, and
an engagement receiving portion engaging the engagement portion is formed in the other of the pedestal and the pedestal attachment portion.

12. The electrical junction box according to claim 4 ,
wherein one of the pedestal and the pedestal attachment portion has an engagement portion that is formed protruding toward the other of the pedestal and the pedestal attachment portion, and
an engagement receiving portion engaging the engagement portion is formed in the other of the pedestal and the pedestal attachment portion.

13. The electrical junction box according to claim 2 , further including a case, the case is attached to the first surface of the base plate portion.

14. The electrical junction box according to claim 3 , further including a case, the case is attached to the first surface of the base plate portion.

15. The electrical junction box according to claim 4 , further including a case, the case is attached to the first surface of the base plate portion.

16. The electrical junction box according to claim 5 , further including a case, the case is attached to the first surface of the base plate portion.

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries

Inventors

• OOI Tomohiro
• Yamane Shigeki
• Kobayashi Takehito
• Kita Yukinori
• Sasaki Yoshikazu

Classifications

• H05K2201/066

  Heatsink mounted on the surface of the printed circuit board [PCB] · CPC title

• H02G3/08

  Distribution boxes; Connection or junction boxes · CPC title

• H05K7/20418

  the radiating structures being additional and fastened onto the housing · CPC title

• B60R16/0238 Primary

  Electrical distribution centers · CPC title

• H05K7/20854

  Heat transfer by conduction from internal heat source to heat radiating structure (H05K7/20863 takes precedence) · CPC title