Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – Within distinct housing spaced from panel circuit arrangement
Reexamination Certificate
2000-03-07
2001-08-07
Sircus, Brian (Department: 2839)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
Within distinct housing spaced from panel circuit arrangement
Reexamination Certificate
active
06270361
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a connection structure for bus bars to be housed in an electric connection box.
The electric connection box to be used for branching and connecting a wire harness or the like for an automobile with a variety of electrical equipments branches and connects the electric wires rationally and economically by concentrating a branching and connecting point at one point. A variety of types have been developed for different kinds and applications of automobiles as the wire harness grows dense.
One of the aforementioned electric connection boxes is manufactured, as shown in
FIG. 8
, by punching a hoop material
6
into individual bus bars
7
A to
7
C by a press mold, by cutting and raising tab terminals
7
a
and
7
b
vertically from the pattern portion of each of the bus bars
7
A to
7
C, by stacking insulating plates
8
A to
8
C individually between the bus bars
7
A to
7
C, and by housing the stack in an upper case
9
A and a lower case
9
B of an electric connection box
9
. Here, numeral
10
designates relay terminals, and numerals
11
and
12
designate relays and fuses.
Since the aforementioned individual bus bars
7
A to
7
C have pattern portions of different shapes, however, they have to be individually punched out by dedicated press molds so that their fabrication costs rise. If the electric connection boxes of the same kind of automobile belong to different grades, the pattern portions of the bus bars have different shapes to raise another problem of lack of flexibility.
SUMMARY OF THE INVENTION
The present invention has been conceived to solve the aforementioned problems of the prior art and has an object to provide a bus bar connection structure which can lower the fabrication cost and which is excellent in the flexibility.
In order to solve the aforementioned problems, according to the present invention, there is provided a connection structure for bus bars to be housed in an electric connection box, characterized: in that there are arranged on one side of an insulating plate longitudinal bus bars which are extended straight in a longitudinal direction at a predetermined pitch where as there are arranged on the other face of the insulating plate transverse bus bars which are extended straight in a transverse direction at a predetermined pitch; in that the insulating plate is provided with through holes at the intersecting portions of the bus bars on the two faces; in that at least one of the bus bars on the two faces is provided at suitable positions of the intersecting portions with recesses to be fitted in the through holes; and in that the recesses are brought into contact with and welded to the bus bars on the confronting face so that the bus bars on the two faces are electrically connected.
According to the present invention, the bus bars on the two faces can be electrically connected by arranging the longitudinal bus bars on one face of the insulating plate and the transverse bus bars on the other face of the insulating plate, by fitting the recesses of at least one of the bus bars of the suitable positions of the intersecting portions of the bus bars on the two faces in the through holes of the insulating plate, and by bringing the recesses into contact with the face, as confronted thereby, and welding them to the confronted face.
If the construction is made such that the individual bus bars on the two faces are provided at their end portions with connector tab terminals which are raised upward, as in Aspect 2, it is unnecessary to weld the tab terminals separately.
If the construction is made such that the individual bus bars on the two faces are cut at suitable portions, as in Aspect 3, another circuit can be formed by making an electric disconnection with the same bus bars.
The construction can be made, as in Aspect 4, such that the bus bars for the lower layer are provided with lower layer compression blades which are extended through slits formed in said insulating plate to over the face of the insulating plate for the upper layer, such that there are arranged on the face of the insulating plate for the upper layer the bus bars which are provided at their two ends with upper layer compression blades confronting the lower layer compression blades and connector tab terminals, and such that jumper electric wires are compressed on the upper layer compression blades and the lower layer compression blades to connect the bus bars on the two faces electrically.
The construction can be made, as in Aspect 5, such that the bus bars for the lower layer are provided with lower layer compression blades which are extended through slits formed in said insulating plate to over the face of the insulating plate for the upper layer, such that there are arranged on the face of the insulating plate for the upper layer connector tab terminals which are provided with compression blades at their lower ends, and such that jumper electric wires are compressed on the compression blades and the lower layer compression blades so that the bus bars for the lower layer and the connector tab terminals for the upper layer are electrically connected.
REFERENCES:
patent: 2019625 (1935-11-01), O'Brien
patent: 4208080 (1980-06-01), Teagno
patent: 5310353 (1994-05-01), Parrish et al.
patent: 5322445 (1994-06-01), Ozaki et al.
patent: 5801335 (1998-09-01), Brussalis et al.
patent: 6162990 (2000-12-01), Sakamoto
patent: 60-35911 (1985-02-01), None
Kasai Koji
Oka Yoshito
Onizuka Takahiro
Yamane Shigeki
Harness System Technologies Research Ltd.
Le Thanh-Tam
Oliff & Berridg,e PLC
Sircus Brian
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