Renesas Electronics Corporation

Minebea Motor Manufacturing Corporation

Minebea Company, Limited

Takeshi Yoshizawa

Masato Hirai

Takeshi Kuwano

Hidenori Mizukami

Yoshio Sato

Katsufumi Ohkouchi

To improve the efficiency of pressure detection, a driver applies a positive-phase signal to a capacitance element from an opposite side to a coupling point in a control device. Another driver applies a reverse-phase signal to another capacitance element from an opposite side to the coupling point. A control unit detects pressures applied to the capacitance elements based on a potential fluctuation at the coupling point.

Pressure sensor device, control device, and pressure sensor unit

An overvoltage protection circuit includes a PMOS transistor Qthat is disposed between an input circuit, from which an input voltage VIN is supplied, and a systemand functions as a switch. A comparatorcompares the input voltage VIN with a predetermined reference voltage to determine the occurrence of an overvoltage. Further, the comparatoroutputs a High level as an operation signal when no overvoltage is detected. A soft switching control circuitstarts up by using the High level output from the comparatoras an enable signal, and gradually turns on the PMOS transistor Q. A sudden change of the load exerted on the circuit on the input side is suppressed by the soft start function.

Input overvoltage protection circuit with soft-start function

A closed-type motor has an elastic grommet with a through-hole into which a lead wire is inserted. The grommet covers an opening portion of a case. An elastic tube is connected to the grommet, and a cover covers the grommet. The grommet includes a pedestal portion abutted to the case; a tubular projection with the through-hole; and an annular groove surrounding a basal portion of the tubular projection. The tubular projection has an internal sectional area being equal to or larger than the one of the lead wire. The tube has an internal sectional area being equal to or larger than the one of the lead wire and has an inner diameter being equal to or less than an outer diameter of the tubular projection. The cover is provided with a central hole having a diameter being equal to or larger than an outer diameter of the tube.

Closed-type motor

A method of selectively utilizing a set of linear actuator motors for an application includes providing a plurality of linear actuator motors numbered from 1 to N including a box shaped housing with respective lengths between a first end-plate and a second end-plate and respective hollow shafts. Each hollow shaft includes an extended portion out of either the first end-plate or the second end-plate and configured to receive a nut including a tube part integrally connected with a flat-end part. The nut is configured to be able to mate in a common manner to any of the plurality of linear actuator motors. The method further includes testing any of the plurality of linear actuator motors including the nut for the application, wherein the nut is detached from one linear actuator motor to reattach with another linear actuator motor.

Growing community of inventors

Tokyo, Japan

Takeshi Yoshizawa