# US 10,874,017 B2 · Board unit

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- Number: US 10,874,017 B2
- Document ID: US10874017B2
- Status: Granted
- Kind: B2
- Application number: 16/306,961
- Filed: 2017-06-06
- Published: 2019-06-20
- Granted: 2020-12-22
- Earliest claimed: 2016-06-08
- Assignees: Autonetworks Technologies, Ltd.; Sumitomo Wiring Systems, Ltd.; Sumitomo Electric Industries, Ltd.
- Applicants: AutoNetworks Technologies, Ltd.; Sumitomo Wiring Systems, Ltd.; Sumitomo Electric Industries, Ltd.
- Inventors: Yuuichi Hattori
- Web page: https://patentgrep.com/patent/US10874017B2

## CPC

- H05K 1/0263: {High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board (H05K1/0293 takes precedence)}
- H01R 12/718: {Contact members provided on the PCB without an insulating housing (contacts for abutting H01R12/714)}
- H02G 3/14: Fastening of cover or lid to box
- H02G 3/16: structurally associated with support for line-connecting terminals within the box
- H05K 7/06: on insulating boards {, e.g. wiring harnesses (for printed circuits H05K1/18, H05K3/30)}
- H05K 2201/10272: Busbars, i.e. thick metal bars mounted on the printed circuit board [PCB] as high-current conductors
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES

## Abstract

A board unit including: a circuit assembly including a circuit board and a bus bar disposed on one side of the circuit board; a frame-like case that forms a housing space for housing the circuit board, and the bus bar includes: a main body to which the circuit board is joined; a plurality of facing portions that protrude from opposite sides of the main body, and that face a surface of the frame-like case, the facing portions and the frame-like case include a locking structure for interlocking the facing portions and the frame-like case with each other to hold the circuit assembly at the predetermined position in the frame-like case.

## Claims

### Claim 1

A board unit comprising:
a circuit assembly including a circuit board and a bus bar disposed underneath of the circuit board; and
a frame-like case that forms a housing space for housing the circuit board,
wherein the bus bar includes:
a main portion to which the circuit board is joined, and
a plurality of facing portions that protrude from opposite sides of the main portion so as to be orthogonal to the main portion, and that face a surface of the frame-like case, and
the facing portions and the frame-like case include a locking structure for interlocking the facing portions and the frame-like case with each other to hold the circuit assembly at a fixed and a predetermined position in the frame-like case so as to prevent the bus bar from being lifted away from the case.

### Claim 2 (depends on 1)

The board unit according to claim 1,
wherein the locking structure includes:
through holes formed in the facing portions; and
locking protruding pieces that protrude from the frame-like case to the facing portion side and that interlock with the through holes.

### Claim 3 (depends on 1)

The board unit according to claim 1, wherein the locking structure includes a pair of locking protruding pieces spaced apart from each other and wherein each of the pair of locking protruding pieces extending from a surface of the frame-like case the pair of locking protruding pieces spaced apart from each other so as to receive an outer circumferential side surface of the facing portion.

### Claim 4 (depends on 1)

The board unit according to claim 1, wherein the facing portions each include an upright portion that stands upright on the main portion and faces an inner surface of the frame-like case, and the locking structure is provided on the upright portion and the inner surface of the frame-like case.

### Claim 5 (depends on 2)

The board unit according to claim 2, wherein the facing portions each include an upright portion that stands upright on the main portion and faces an inner surface of the frame-like case, and the locking structure is provided on the upright portion and the inner surface of the frame-like case.