Unisia Jecs Corporation

Hitachi, Ltd.

Atsugi Unisia Corp.

Yukinori Otsuka

Hideaki Takahashi

Yuuji Ohishi

Chiharu Nakazawa

Masahiko Hara

Yukio Sudo

Haruo Kamiya

Hiromasa Kojima

Tatsuya Takamori

Kouji Numakura

Akimichi Shimazu

In a liquid pressure control unit, a positive terminal of a power supply block is connected to a positive terminal of a motor block through a penetrating hole of a pump block. The power supply block is connected with the pump block, which serves as a power supply passage, via opposed male and female negative connectors. The female connector is connected to the male connector in the same direction as a direction in which the power supply block is connected to the pump block.

Liquid pressure control unit

An electromagnetically actuated valve including a housing having a fluid path and a valve retaining bore located in course of the fluid path, a tubular valve casing mounted to the valve retaining bore, a valve body electromagnetically operative to axially move within the tubular valve casing and allow and prevent a flow of fluid passing through the fluid path of the housing, and a filter disposed at an axial end of the tubular valve casing. The filter includes a fluid passage communicated with the fluid path of the housing.

Electromagnetically actuated valve

An electromagnetic valve unit includes a yoke of magnetic metal. The yoke includes upper and lower walls that are integrally connected by side walls. A slit is provided by the upper wall of the yoke. The slit extends along a longitudinal axis of the yoke between axially opposed ends of the yoke. A plurality of electromagnetic valves are abreast installed in the yoke in such a manner that the yoke constitutes outside magnetic paths of solenoid coils of the valves. Each of the solenoid coils has terminal members that project outward from the yoke through the slit.

Electromagnetic valve unit

A solenoid valve includes a moving part, a plunger of magnetic material having one end facing an end face of the moving part, and a protrusion formed at the one end of the plunger and abutting on the end face of the moving part. During energization, a magnetic path is formed from a valve body to the moving part to produce an attraction force between the valve body and the moving part across a clearance. Magnetic flux running along the magnetic path becomes saturated at the protrusion.

Solenoid valve

The invention relates to a hydraulic modulator having a hydraulic modulator block including a reservoir and a damper; and an electronic control block detachably attached to the surface of the hydraulic modulator block. The reservoir and the damper are overlapped with each other such that a surface of the hydraulic modulator block becomes entirely substantially flat. With this, the hydraulic modulator becomes simple in construction. The invention further relates to a hydraulic modulator having a solenoid valve; an electronic control circuit board; and an electric wiring pattern prepared by pressing a metal plate having a first major surface formed with a first tin layer and a nickel layer and a second major surface formed with a second tin layer, into a three-dimensional shape such that the electric wiring pattern is formed with (1) a first terminal having a surface that is formed with the first or second tin layer electrically connected with the solenoid valve, (2) a connector terminal having first and second surfaces respectively formed with the first and second tin layers, and (3) a second terminal having a surface that is formed with the nickel layer electrically connected with the electronic control circuit board. Thus, each terminal has a secure electrical connection with another member.

Automotive hydraulic modulator

An automotive brake system comprises a sump fluidly disposed in a housing, constructing a brake unit, and in the middle of a suction circuit of a pressure apply device including at least a pressure apply pump. During vehicle dynamics control or during vehicle stability control, the pressure apply rapidly sucks the brake fluid stored in the sump and quickly performs a pressure apply action, irrespective of the distance between the brake unit and a brake-fluid source. This ensures a smooth brake-fluid supply to the suction circuit of a return pump returning the brake fluid from the wheel-brake cylinder to the brake circuit upstream of a fluid-pressure control valve unit.

Automotive brake system

A multiple electromagnetic valve comprises a yoke and a port structure held by the yoke. The structure has therein a chamber from which two passages extend to the outside. Two electromagnets are mounted on the yoke, and two armatures for use with the electromagnets are pivotally supported by the yoke. The armatures are pivoted in a first direction when the electromagnets are energized. Springs are employed for biasing the armatures to pivot in a second direction which is opposite to the first direction. Two valve bodies are respectively held by the armatures and arranged to close terminal ends of the passages when the armatures are pivoted in the first direction.

Growing community of inventors

Kanagawa, Japan

Yukinori Otsuka