Advics Co., Ltd.

Satoshi Sanada

Matsuhisa Tsuruta

Takao Tsunooka

In a fluid control apparatus having coil-supporting protruding portions on one end surface of a case, where each coil-supporting protruding portion is deformed by pressing a coil portion with a pressing jig to the coil-supporting protruding portion, in a state where the other end surface of the case is supported by a supporting jig, the fluid control apparatus includes jig-supporting protruding portions on the other end surface of the case, such that the supporting jig abuts with the jig-supporting protruding portions only. When an area that abuts with the supporting jig is narrow, it is easy to increase accuracy in flatness even in a case of resin molding. Furthermore, when accuracy in flatness of the jig-supporting protruding portions is enhanced, a necessity for adjusting the supporting jig so as to match waviness of the case as in the conventional case is eliminated, whereby the supporting jig can be easily produced.

Fluid control apparatus

In an electronic control unit, a chassis is provided with a plate portion, and a circuit board is secured to a board-side attaching surface of the plate portion with a predetermined space secured relative to the plate portion. The chassis is further provided with a side wall protruding from the circumferential portion of the other surface of the plate portion and is mounted on a surface of a housing incorporating a device therein, with an end surface of the side wall being seated on the surface of the housing. A bus bar is fixed at a fixing portion thereof to the board-side attaching surface between the plate portion and the circuit board and is connected to a terminal of the device which is taken out from the housing. The bus bar is provided at plural free ends thereof with branch portions at which lead portions extend to be joined at end portions thereof to the circuit board. Elastic portions for reducing stresses which are developed at juncture portions of the lead portions to the circuit board as the temperature changes are formed between the base portion and the branch portions alongside the board-side attaching surface.

Electronic control unit

A solenoid cover includes a solenoid valve housing chamber housing solenoids of solenoid valves that project outwards from a hydraulic unit and a lower space therebelow. Two labyrinth portions with a fluid passage formed by a plurality of partition plates and communication holes are provided so as to be symmetrical with each other in a left-right direction below the lower space. An air vent communicates with the outside and which serves as a water drain is provided below each labyrinth portion. When a pressure in the solenoid valve housing chamber becomes negative due to a temperature decrease, water flows through the air vent at a high flow rate. Then, the water entering through the upper communication hole flows down along the partition plate toward the lower communication hole, which easily enables the water to be drained to the outside.

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Chiryu, Japan

Satoshi Sanada