Sumitomo Electric Industries, Limited

Sumitomo Wiring Systems, Limited

Autonetworks Technologies, Limited

Toshiyuki Tsuchida

Shigeki Yamane

Junya Aichi

Hirotoshi Maeda

Takuya Ota

Yoshihiro Tozawa

Manabu Hashikura

Shinsuke Okumi

Xiaoguang Zheng

An inductor includes: a magnetic core; a conduction path penetrating the magnetic core; a pedestal portion including a core holding portion that holds the magnetic core, and support portions that support, when placed on a circuit board, electronic components at a height at which the electronic components can be accommodated on the circuit board side with respect to the core holding portion; and a shield portion that is provided on the circuit board side with respect to the magnetic core, and that shields a magnetic field generated by flow of electricity in the conduction path.

Inductor, inductor with circuit board, and electrical junction box

A circuit assembly that includes an inductor including a core; a fixation member to which the inductor is fixed; a base that is attached to the core, wherein: the fixation member is made of a first material having a coefficient of thermal expansion larger than a coefficient of thermal expansion of the core, and the base is made of a second material having a coefficient of thermal expansion larger than the coefficient of thermal expansion of the core and smaller than the coefficient of thermal expansion of the fixation member; and an adhesive layer that is disposed between the base and the fixation member, and that bonds the base and the fixation member together.

Circuit assembly

A circuit assembly where the circuit board includes a first surface and a second surface that is opposite to the first surface and on which a plurality of bus bars are routed, the inductor includes a main body and a terminal that is led out from the main body and has a shape that is bent toward the circuit board, and a leading end of the terminal is connected through a screwing member to a bus bar of the plurality of bus bars exposed from an opening provided on the circuit board, the screwing member is held in an insulating holder housed in a housing recess provided in the heat dissipation plate, and the heat dissipation plate is overlaid so as to transfer heat on the circuit board on the second surface of the circuit board.

An electrical junction box includes: a circuit board to which an electronic component is connected; and a frame positioned with respect to the circuit board. The frame integrally includes a sub frame that surrounds at least part of a periphery of the electronic component. The sub frame is provided with a holding portion that holds the electronic component in the holding portion.

Electrical junction box

A circuit assembly includes: a substrate with an electrically conducting path; plate-shaped busbars that have connection portions connected to the electrically conducting path of the substrate, and are arranged in an orientation in which plate surfaces thereof intersects with a surface of the substrate; a heat discharge member that is laid on a side of the substrate opposite to the busbars, and is configured to discharge heat of the substrate; and a resin frame that extends along the busbars, and holds the busbars while being in intimate contact with the busbars, wherein the frame includes mounting portions mounted on at least either the substrate or the heat discharge member.

Circuit assembly and electrical junction box

A circuit assembly includes: a circuit board; an inductor that is disposed on the circuit board, and that includes a coil including a winding portion made by winding a winding wire, and a core member; and a heat dissipation plate that is disposed on the opposite side of the surface of the circuit board on which the inductor is disposed, wherein a through hole is provided in a region of the circuit board that corresponds to the inductor, and a receiving protrusion that penetrates the through hole and protrudes to a surface side of the circuit board on which the inductor is disposed, and that is in heat transfer contact with the coil and the core member is provided in a region that corresponds to the through hole in the heat dissipation plate.

A circuit assembly includes a circuit board on which a coil is mounted, a heat sink, and a heat spreading plate that is separate from this heat sink. A first insulating adhesive layer is interposed between the circuit board and the heat spreading plate, and the heat spreading plate and the heat sink are fixed by a first fixing hole for a heat sink and a bolt. Accordingly, warping of the circuit board is suppressed.

An electrical junction box that includes a circuit board on which a coil element is installed; a partition wall that surrounds the coil element and separates an installation region on the circuit board on which the coil element is installed from a region around the installation region; a frame that is formed in one piece with the partition wall and surrounds the circuit board; a heat dissipation plate on which the circuit board and the frame are placed; and a cover that covers the circuit board from the frame side, wherein the coil element is fixed to the partition wall using a synthetic resin material, and wherein the frame and the heat dissipation plate are positioned relative to each other through a recess-projection engagement, and the cover is fixed to the heat dissipation plate using screws.

An electrical junction box includes a casing configured to be mounted in a vehicle, a start relay (a start electrical component) A housed in the casing and to which a current is supplied at least at a start of the vehicle, an operational electrical component (an operational relay, a connector, and a fuse connector) housed in the casing and to which a current is supplied at least during an operation of the vehicle, and a surrounding heat shield wall (a heat shield wall) disposed between the start relay and at least one of the operational relay, the connector, and the fuse connector that are the operational electrical components. The start relay includes a relay case (an electrical component case) and a terminal portion. The terminal portion is housed in the relay case and has a fixed contact and a movable contact.

Growing community of inventors

Yokkaichi, Japan

Toshiyuki Tsuchida