Denso Corporation

Nippondenso Co., Ltd.

Nippon Soken, Inc.

Nippon Idou Tsushin Corporation

Teruo Oda

Inao Toyoda

Yasuyuki Okuda

Tetsuo Fujii

Hiroaki Tanaka

Hirofumi Higuchi

Akitoshi Yamanaka

Tetsuo Yoshioka

Takeshi Tsukamoto

Takuya Kataoka

Kiyonari Kojima

Takaaki Kawai

Seiichirou Otake

Kenzi Nakamura

Tatsuya Takagi

Kenji Fukumura

Haruhiko Miyagawa

Yumiko Kimura

Hiroshi Kobayashi

Yoshito Itoh

Yasuo Shibata

An electric current sensor includes a core having a coupling portion formed by bending a part of a plate member, and one end portion and the other end portion of the plate member are disposed to oppose to each other through a constant magnetic gap on a side opposite from the coupling portion. The core has: a first tapered portion in which a width of the plate member continuously decreases from one end of the coupling portion adjacent to the one end portion to a distal end of the one end portion; and a second tapered portion in which the width of the plate member continuously decreases from an other end of the coupling portion adjacent to the other end portion to a distal end of the other end portion.

Electric current sensor having magnetic core

A concentration sensor device includes a sensor unit, a substrate, and a sedimentation limit unit. The sensor unit detects a concentration of a specific component contained in liquid. The substrate has a face to which the sensor unit is arranged. The sedimentation limit unit is integrally arranged with the sensor unit or arranged at an upstream side of the sensor unit in a flowing direction of the liquid. The sedimentation limit unit is configured to prevent sedimentation of a foreign object on the sensor unit. The sedimentation limit unit includes a piezoelectric element to vibrate when electricity is supplied so as to promote the foreign object to be separated from the sensor unit. The substrate has a recess recessed in a thickness direction of the substrate.

Concentration sensor device and concentration detecting method

An ultrasonic sensor includes a transmitting device, receiving devices arranged in an array, and a circuit device. One receiving device is configured as a reference receiving device. The circuit device includes a reference signal generator and first and second synchronous detectors. The reference signal generator generates a reference signal by using a received signal of the reference receiving device. The first synchronous detector performs synchronous detection of a received signal of one of the receiving devices based on the reference signal to detect a distance to an object. The second synchronous detector performs synchronous detection of received signals of the receiving devices except the reference receiving device based on the reference signal to detect a direction of the object.

Ultrasonic sensor with piezoelectric elements and vibration isolator

A semiconductor device includes: a semiconductor substrate; a flow sensor having a first heater for detecting a flow rate of fluid; and a humidity sensor for detecting a humidity of the fluid. The flow sensor and the humidity sensor are disposed on the semiconductor substrate. The flow sensor is disposed around the humidity sensor. The humidity sensor is disposed on an upstream side of the first heater. Since the device includes the humidity sensor, moisture in the fluid is compensated so that detection accuracy of the flow rate is improved.

Semiconductor device for detecting flow rate of fluid

A window fog detecting apparatus has an optical type fog detecting sensor for optically detecting fog occurring at a window glass, a humidity sensor for detecting a relative humidity of air at an interior side of the window glass, and a sensor output correcting unit. When a fog occurrence at the window glass is determined based on the output values of the optical type fog detecting sensor, the sensor output correcting unit corrects the relative humidity detected by the humidity sensor based on output values of the optical type fog detecting sensor.

Window fog detecting apparatus

A sensor includes a metallic housing having a hollow portion, a metallic terminal pin, a part of which is inserted into the hollow portion of the housing, a sensing element connected to the terminal pin, and a resin casing. The terminal pin and the resin casing provide a connector for connecting an outer circuit outside the sensor. A part of the resin casing is disposed in the hollow portion. The terminal pin and the housing are molded with the resin casing by insert molding so that the resin casing, the terminal pin, and the housing are integrated together.

Sensor having metallic housing and resin connector, and method of manufacturing the same

A pressure detection device includes a sensing part that outputs an electrical signal responsive to an applied pressure, a pressure receiving diaphragm that receives a pressure from a subject device, a cylindrical stem having a first end connected to the sensing part and a second end connected to the pressure receiving diaphragm, and a pressure transmission member located within the cylindrical member to transmit the pressure received by the pressure receiving diaphragm to the sensing part. In the pressure detection device, a side wall portion of the cylindrical stem has a spring portion which is provided to generate an elastic force in an axial direction of the cylindrical member. Accordingly, fluctuations in a spring characteristic acting on a pressure transmission mechanism of the pressure detection device can be effectively restricted by the spring portion.

Pressure detection device

Pressure detecting apparatus includes: a housing; a pipe extending from one end of the housing and having an elongated shape; and a pressure sensitive element for detecting pressure and outputting a signal corresponding to the pressure. The pipe includes a top end capable of receiving the pressure. The pressure sensitive element is disposed on the top end of the pipe. The housing includes a connector for retrieving the signal from the pressure sensitive element. The pipe further includes a wiring member disposed inside the pipe so that the wiring member connects between the pressure sensitive element and connector electrically.

Pressure detecting apparatus

Two sides of a single metal plate are bent to form the structure of a spring terminal having two spring portions. In the spring terminal having such a structure, the two spring portions are different from each other in a natural frequency. For this reason, when external vibrations are applied to a pressure sensor, even if one of the two spring portions of the spring terminal resonates with the external vibrations, the other spring portion can keep the electric connection between a circuit in a substrate and a terminal.

Pressure sensor

One end of a rod-like pressure-conveying member is disposed in a sensing unit, and the other end extends into and through an insertion hole of an engine. A combustion pressure, to which the other end of the rod-like member is exposed, is conveyed to the sensing unit through the pressure-conveying member for the detection of the combustion pressure. The pressure-conveying member resonates at a knocking frequency fof the engine and the knocking frequency fis detected based on the resonance of the pressure-conveying member.

Pressure-detecting device and method of manufacturing the same

A pressure sensor has a sensing unit and a pressure transmitting rod housed in a case, and a pressure receiving diaphragm. The case has a sensing unit housing portion and a pipe portion that extends from the sensing unit housing portion in a form of a pipe. The pipe portion includes an inner pipe and an outer pipe. The inner pipe is arranged inside the outer pipe and fixed to the outer pipe. The pipe portion has the first end located adjacent to the sensing unit and the second end away from the sensing unit. The inner pipe is projected from the outer pipe at the second end of the pipe portion. The pressure receiving diaphragm is welded to the inner pipe at the second end of the pipe portion such that it covers an opening of the inner pipe. The pressure transmitting rod is arranged inside the case such that its first end and second end are located on the sensing unit side and the pressure receiving diaphragm side, respectively. Pressure received by the pressure sensing diaphragm is transmitted to the sensing unit via the pressure transmitting rod.

A pressure detecting device includes a semiconductor substrate () for outputting an electrical signal corresponding to an applied pressure received from a pressure transmitting member () having electrically conductive properties disposed on the front surface of the semiconductor substrate (). The substrate () and the pressure transmitting member () are accommodated in a housing (). A lead member () electrically independent of the housing () is accommodated in the housing () at the back surface side of the semiconductor substrate (), and the lead member () and an electrode () of the substrate () are electrically connected to each other through conductive adhesive material (). The housing () preferably includes a first portion (), a second portion () having smaller thermal conductivity than the first portion, and an electrically conductive partition portion ().

Pressure detecting device

A pressure detector such as a combustion pressure sensor includes a pressure-sensitive element disposed in a cylindrical housing. Electrical signals responsive to pressure applied to the pressure-responsive element are generated in the element and led to output terminals through conductor patterns formed on the surface of a connecting member disposed between the pressure-responsive element and the output terminals. The conductor patterns may be formed in grooves formed on the surface of the connecting member. In place of the connecting member, a disc-shaped thin conductive member made of an anisotropiccally conductive material may be used.

Pressure detector having elongate housing containing pressure-sensitive element therein

A cellular telephone which is compact, slim in shape and convenient for the one touch signal transmission is disclosed. On the right hand side of the front surface of a case, numeral keys of 0 through 9 are provided in a row while, on the left hand side, function keys are provided in a row. That is, keys are aligned in the double row layout. On the rear surface of the case a slide switch which allows to set the one touch transmission mode is provided. At the center between the two rows of the keys, a groove, which runs longitudinally over the case, is provided for the ease of grip. A speaker and a microphone are provided in the groove portion. Further, small protrusions are formed on the front surface of the case to enable built-touch operation of the numeral keys.

Growing community of inventors

Gamagori, Japan

Teruo Oda