Electrical connectors – With selectable circuit – e.g. – plug board – Including three or more contacts adapted to be selectively...
Reexamination Certificate
2000-11-02
2001-12-04
Sircus, Brian (Department: 2833)
Electrical connectors
With selectable circuit, e.g., plug board
Including three or more contacts adapted to be selectively...
C439S949000
Reexamination Certificate
active
06325635
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a circuit connection structure for an electric connection box and a circuit forming method.
2. Description of the Related Art
Electric connection boxes for the multipoint connection of various kinds of the electric equipment such as wire harnesses for automobiles are used for reasonable and economical multipoint connection of wirings with the multipoint connection points provided at one point. Various types have been developed according to the trend toward the higher density of wire harnesses, depending on the kind of the automobile or the application.
Bus bars to be stored in the electric connection box are provided by punching out plural kinds of bus bars from a hoop material with a press mold, cutting up tub terminals each from the pattern part of each bus bar, providing an insulation plate between the bus bars, and storing the same in the electric connection box.
However, since the above-mentioned bus bars have different shapes in the pattern part so that they need to be punched out with a press mold dedicated to each of them, problems such as a high production cost and the lack of flexibility due to difference in the bus bar pattern part shape for the electric connection boxes for the same kind of automobiles but of different grades arise.
Japanese Patent Application No. 11-180649, corresponding to U.S. Pat. Ser. No. 09/520,186, describes a connection structure for bus bars, capable of electrically connecting the bus bars on both surfaces by disposing a vertical direction bus bar on one surface of an insulation plate and disposing a lateral direction bus bar on the other surface of the insulation plate, fitting with a through hole of the insulation plate a dent part of at least one of the bus bars at an appropriate position of the intersection part of the bus bars on both surfaces, and welding the dent part in the state contacting with the bus bar on the surface facing thereto.
According to the related art, since the bus bars can be provided by disposing the common straight vertical direction bus bar and lateral direction bus bar in a combination, and welding the dent part at the intersection part for connecting the upper layer and lower layer bus bars, unlike the conventional configuration, the bus bars need not be provided by punching out with dedicated press molds for different pattern shapes so that the production cost can be reduced. Moreover, since any bus bar pattern shape can be dealt with only by changing the position of the dent part, effects such as drastic cutback of the number of the circuit design steps as well as capability of dealing with design change derived from a slight circuit modification quickly so as to improve the flexibility can be achieved.
SUMMARY OF THE INVENTION
This invention relates to improvement on circuit connection structure and circuit forming method according to the proposal by the inventor, and an object thereof is to provide a circuit connection structure for an electric connection box and a circuit forming method with a better flexibility, capable of further reducing the production cost.
In order to solve the problems, a first aspect of the invention is a connection structure for a circuit stored in an electric connection box, wherein the circuit is provided by fixing a plurality of bus bars elongating straightly in the same direction with an interval, on an insulation plate, fixing a plurality of tub terminals elongating in the direction perpendicular to the bus bar elongation direction with an interval at the side part with respect to the bus bars on the insulation plate, and bonding the tub terminals and the bus bars with wires with an insulation coat.
Moreover, a second aspect of the invention is a method for forming a circuit stored in an electric connection box, wherein the circuit is provided by fixing a plurality of bus bars elongating straightly in the same direction with an interval, on an insulation plate, fixing a plurality of tub terminals elongating in the direction perpendicular to the bus bar elongation direction with an interval at the side part with respect to the bus bars on the insulation plate, and bonding the tub terminals and the bus bars with wires with an insulation coat.
According to the invention, a circuit is provided by fixing a plurality of straight bus bars on an insulation plate as well as fixing a plurality of tub terminals at the side part with respect to the bus bars, and bonding the tub terminals and the bus bars with wires with an insulation coat.
REFERENCES:
patent: 5057026 (1991-10-01), Sawai et al.
patent: 5718598 (1998-02-01), Saka et al.
patent: 5729436 (1998-03-01), Yoshigi et al.
patent: 5877944 (1999-03-01), Onizuka
patent: 5888088 (1999-03-01), Kobayashi et al.
patent: 5902138 (1999-05-01), Murakami
patent: 6168470 (2001-01-01), Ikeda et al.
patent: 11-180649 (1999-07-01), None
Autonetworks Technologies Ltd.
Nguyen Son V.
Oliff & Berridg,e PLC
Sircus Brian
LandOfFree
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