Electrical connection box and connection terminal component

Patent metadata

Field	Value
Publication number	US-10141660-B2
Application number	US-201615549511-A
Country	US
Kind code	B2
Filing date	Feb 3, 2016
Priority date	Feb 24, 2015
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

An electrical connection box includes: a circuit portion having bus bars including bus bar terminal portions; a case housing a circuit portion with electronic components mounted thereon; a through-hole is formed in each of the bus bar terminal portions; electrical wire terminal portions are connected to electrical wires, a through-hole is formed in each electrical wire terminal portions; stud bolts having a shaft portion and a head portion; and nuts are fastened to the stud bolts. The shaft portion is inserted into the through-holes of both the bus bar terminal portions and the electrical wire terminal portions, the bus bar terminal portions and the electrical wire terminal portions are overlaid on seat surfaces of the stud bolts, and a groove portion is formed over the entire circumference of each of the stud bolts where the seat surface and the outer circumferential surface of the shaft portion intersect.

First claim

The invention claimed is:

1. An electrical connection box comprising:
a circuit portion that has a bus bar as a conduction path, an electronic component being mounted on the circuit portion;
a case in which the circuit portion is housed;
a bus bar terminal portion that is provided on the bus bar, a through-hole being formed in the bus bar terminal portion; an electrical wire terminal portion that is connected to an electrical wire, a through-hole being formed in the electrical wire terminal portion;
a bolt that has a shaft portion and a head portion having a seat surface concentric to the shaft portion; and
a nut that is fastened to the bolt so as to press the wire terminal portion against the bus bar terminal portion,
wherein the shaft portion of the bolt is inserted into the through-hole of the bus bar terminal portion and the through-hole of the electrical wire terminal portion, the bus bar terminal portion and the electrical wire terminal portion are overlaid on the seat surface of the bolt, and a groove portion is circumferential to the shaft portion of the bolt, the seat surface being concentric to the groove portion, and
the groove portion is recessed in a direction along an axial direction of the shaft portion and at a position where the seat surface and an outer circumferential surface of the shaft portion intersect so as to provide a planar surface engagement between the bus bar terminal portion and the wire terminal portion and facilitate an electrical connection.

2. An electrical connection box comprising:
a circuit portion that has a bus bar as a conduction path, an electronic component being mounted on the circuit portion;
a case in which the circuit portion is housed;
a bus bar terminal portion that is provided on the bus bar, a through-hole being formed in the bus bar terminal portion;
an electrical wire terminal portion that is connected to an electrical wire, a through-hole being formed in the electrical wire terminal portion;
a bolt that has a shaft portion and a head portion having a seat surface concentric to the shaft portion; and
a nut that is fastened to the bolt so as to press the wire terminal portion against the bus bar terminal portion,
wherein the shaft portion of the bolt is inserted into the through-hole of the bus bar terminal portion and the through-hole of the electrical wire terminal portion, the bus bar terminal portion and the electrical wire terminal portion are overlaid on the seat surface of the bolt, and a groove portion is circumferential to the shaft portion of the bolt and at a position where the seat surface and an outer circumferential surface of the shaft portion intersect, the seat surface being concentric to the groove portion, and,
out of the through-holes of the bus bar terminal portion and the electrical wire terminal portion, a hole edge of the through-hole on a side in contact with the seat surface is arranged at a position overlapped with the groove portion as to provide a planar surface engagement between the bus bar terminal portion and the wire terminal portion and facilitate an electrical connection.

3. A connection terminal component comprising:
a bus bar terminal portion that is provided on a bus bar that serves as a conduction path, a through-hole being formed in the bus bar terminal portion;
an electrical wire terminal portion that is connected to an electrical wire, a through-hole being formed in the electrical wire terminal portion;
a bolt that has a shaft portion and a head portion having a seat surface concentric to the shaft portion; and
a nut that is fastened to the bolt so as to press the wire terminal portion against the bus bar terminal portion,
wherein the shaft portion of the bolt is inserted into the through-hole of the bus bar terminal portion and the through-hole of the electrical wire terminal portion, the bus bar terminal portion and the electrical wire terminal portion are overlaid on the seat surface of the bolt, and a groove portion is circumferential to the shaft portion of the bolt, the seating surface being concentric to the groove portion, and
the groove portion is recessed in a direction along an axial direction of the shaft portion and at a position where the seat surface and an outer circumferential surface of the shaft portion intersect so as to provide a planar surface engagement between the bus bar terminal portion and the wire terminal portion and facilitate an electrical connection.

4. A connection terminal component comprising:
a bus bar terminal portion that is provided on a bus bar that serves as a conduction path, a through-hole being formed in the bus bar terminal portion;
an electrical wire terminal portion that is connected to an electrical wire, a through-hole being formed in the electrical wire terminal portion;
a bolt that has a shaft portion and a head portion having a seat surface concentric to the shaft portion; and
a nut that is fastened to the bolt so as to press the wire terminal portion against the bus bar terminal portion,
wherein the shaft portion of the bolt is inserted into the through-hole of the bus bar terminal portion and the through-hole of the electrical wire terminal portion, the bus bar terminal portion and the electrical wire terminal portion are overlaid on the seat surface of the bolt, and a groove portion is circumferential to the shaft portion of the bolt and at a position where the seat surface and an outer circumferential surface of the shaft portion intersect, the seat surface being concentric to the groove portion, and
out of the through-holes of the bus bar terminal portion and the electrical wire terminal portion, a hole edge of the through-hole on a side in contact with the seat surface is arranged at a position overlapped with the groove portion so as to provide a planar surface engagement between the bus bar terminal portion and the wire terminal portion and facilitate an electrical connection.

Assignees

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

Inventors

• Haraguchi Akira

Classifications

• B60R16/0238

  Electrical distribution centers · CPC title

• H01R11/12

  End pieces terminating in an eye, hook, or fork · CPC title

• H01R2201/26

  for vehicles · CPC title

• H01R25/165

  Connecting locations formed by surface mounted apparatus · CPC title

• H02G5/00

  Installations of bus-bars · CPC title