The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2002
Filed:
Dec. 10, 1999
Denso Corporation, Kariya, JP;
Abstract
A hydraulic control apparatus integrated with motor circuit unit, in which waterproof for preventing liquid such as water from entering an electronic substrate or the like accommodated in a circuit unit housing can be efficiently performed. A hydraulic control apparatus is provided with a hydraulic unit for adjusting brake fluid pressure, and a motor driving circuit unit for actuating a motor for adjusting the brake fluid pressure and integrally assembled with the hydraulic unit. An ECU for controlling the brake fluid pressure is separately provided from the motor driving circuit unit. The motor driving circuit unit is provided with a circuit unit housing constructed by a case portion made of resin and a cover made of resin. The circuit unit housing is divided into an electronic substrate portion for accommodating an electronic substrate, and an operation portion for accommodating a solenoid and a pressure sensor by partition walls provided at the case portion and the cover. The cover is bonded with the case portion by vibrating welding so that the cover is integrated with the cover. As a result, it can prevent water from entering into the circuit unit housing. Particularly, the electronic substrate portion is completely waterproofed by the partition walls and the cover.