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US 6,443,737 B2Granted
Circuit board, electrical connection box having the circuit board and method of making the circuit board
AssigneeSumitomo Wiring Systems, Ltd.
InventorKoji Kasai
Life of this patent
Estimating the term…
Abstract
A circuit board has an insulation board and strip bus bars arranged on the opposite faces of the board. On one face, the bus bars extend in parallel in a first direction. On the second face, the bus bars extend in parallel in a second direction crossing the bars extending in said first direction, so that there is an array of crossing points of the bus bars. The insulation board has holes at which the mutually crossing bus bars are bent towards each other and joined to establish electrical connection. In this way, a predetermined wiring pattern is obtained, which can be varied easily.
Claims18
A circuit board, having:
- an insulation board having first and second opposite main faces;
- a plurality of first strip bus bars of substantially a same length, at least one first strip bus bar having a first preformed bent portion, arranged on said first main face and extending in parallel in a first direction;
- and
- a plurality of second strip bus bars of substantially a same length, at least one second strip bus bar having a second preformed bent portion, arranged on said second main face and extending in parallel in a second direction crossing said first direction, whereby as seen in plan view on one of said main faces there is an array of crossing points of said bus bars;
- wherein a pitch spacing between one of the plurality of first strip bus bars and the plurality of second strip bus bars is variable whereas the pitch spacing between the other of the plurality of first strip bus bars land the plurality of second strip bus bars is uniform, and said insulation board has at least one hole through it at at least one of said crossing points, and at least one of said at least one hole the first and second preformed bent portions of said at least one first strip bus bar and said at least one second strip bus bar are bent each towards the other and are mutually joined to establish electrical connection between them, whereby a predetermined wiring pattern is obtained.
2 more elements
A method of making a circuit board, comprising the steps of:
- (i) providing an insulation board having first and second opposite main faces and at least one holes through it at locations at which electrical connection is to be made through the board by joining a first strip bus bar to a second bus bar;
- (ii) locating a plurality of first strip bus bars of substantially a same length on said first main face, the first strip bus bars extending in parallel in a first direction, at least one first strip bus bar having a first preformed bent portion;
- (iii) locating a plurality of second strip bus bars of substantially a same length on said second main face, the second strip bus bars extending in parallel in a second direction crossing said first direction, at least one second strip bus bar having a second preformed bent portion, whereby as seen in plan view on one of said main faces there is an array of crossing points of said first and second strip bus bars, at least one of said crossing points coinciding with one of the at least one hole;
- (iv) providing both of a mutually crossing pair of said first and second strip bus bars, at a position of at least one of the at least one hole, with the first and second preformed bent portions bent towards the other strip bus bar, respectively, of said pair;
- and
- (v) joining each said mutually crossing pair of first and second strip bus bars at at least one of the at least one hole to establish electrical connection between them, wherein a pitch spacing between one of the plurality of first strip bus bars and the plurality of second strip bus bars is variable whereas the pitch spacing between the other of the plurality of first strip bus bars and the plurality of second strip bus bars is uniform.
3 more elements
Dependencies are inferred from the claim text.