Seiko Epson Corporation

Epson Toyocom Corporation

Hisao Motoyama

Jun Watanabe

Kenta Sato

Kentaro Yoda

Mikimoto Jin

Masanobu Fujisaki

A sensor unit includes a sensor module and a case having a storage space for storing the sensor module. In addition, the sensor module also includes an inertial sensor and a package for storing the inertial sensor. In addition, the package also includes a bottom surface and a side surface connected to the bottom surface. In addition, the case includes a bottom portion on which a protrusion is disposed, in which the protrusion protrudes into the storage space and includes a mounting surface for the bottom surface of the sensor module to be mounted, and an abutment portion having an abutment surface that abuts the side surface of the sensor module. Further, in plan view of the bottom portion, a separation distance between the abutment surface and the protrusion is longer than a separation distance between the abutment surface and the inertial sensor.

Sensor unit, electronic apparatus and vehicle

A liquid level meter includes: an exterior portion having an internal space which a liquid to be measured flows in; and a pressure sensitive portion provided inside the exterior portion and having a pressure sensitive surface; wherein the exterior has holes that it is arranged on each of a vertically lower side and a vertically upper side relative to the pressure sensitive surface, and the holes connect an inside and outside of the internal space.

Liquid pressure meter, liquid level meter, and warning system

A diaphragm for a pressure sensor includes: a central section serving as a diaphragm body, the central section including: an external surface deformed upon receipt of an external pressure; and an internal surface transmitting a force to a pressure sensitive element inside a housing of the pressure sensor; a peripheral section that is an exterior of the central section and welded to an outer circumference of a pressure input orifice that is provided to the housing; and a step wall provided between the central section and the peripheral section. The central section and the peripheral section are integrally and concentrically provided. The diaphragm seals the pressure input orifice.

Diaphragm for pressure sensor and pressure sensor

A pressure sensor includes: a housing; a pressure receiver which seals an opening of the housing and transmits pressure from outside the housing to the inside of the housing; and a pressure sensing element having a pressure sensing portion and a pair of base portions which are respectively coupled to both ends of the pressure sensing portion. In the pressure sensor, a force detecting direction is set to be a detection axis, a line connecting the pair of base portions and a displacement direction of the pressure receiver are arranged in parallel, one of the base portions is coupled to a central region, which is displaced by the pressure, of the pressure receiver, and the other of the base portions is coupled to a marginal region, which is at a fixing side, of the pressure receiver through a connecting member.

Pressure sensor

A pressure sensor includes: a housing; a pressure input orifice opened at a pipe sleeve of the housing; a diaphragm sealing the pressure input orifice, the diaphragm having a first surface serving as a pressure receiving surface; a pressure sensitive unit using a direction of detecting a force as a detecting axis. A first end of the pressure sensitive unit is connected to a central area of a second surface of the diaphragm. A second end of the pressure sensitive unit is connected to the housing. The detecting axis is approximately orthogonal to the pressure receiving surface. A circumference of a portion where the central area and the first end of the pressure sensitive unit are in contact with each other is located inside a circumference of the central area. A thickness of the central area is larger than a thickness of an area surrounding the central area.

A pressure sensor includes: a housing; an attachment portion coupled to the housing and having a pressure input orifice; a diaphragm sealing the pressure input orifice of the attachment portion and having a first surface that is a pressure receiving surface; and a pressure sensitive unit having a detecting axis in a direction in which a force is detected. In the sensor, an end of the pressure sensitive unit is connected to a central area of a second surface of the diaphragm, another end of the pressure sensitive unit is connected to the housing, and the detecting axis is approximately orthogonal to the pressure receiving surface.

A pressure sensor includes: a housing having openings at both ends thereof; a pair of pressure-receiving devices configured to seal the openings respectively and transmit a pressure from the outside to the interior of the housing; a force transmission device configured to connect the pair of pressure-receiving devices and transmit a force that one of the pressure-receiving devices receives to the other pressure-receiving device; and a pressure-sensitive element having a pressure-sensitive portion and a pair of base portions to be connected to both ends of the pressure-sensitive portion, wherein a line connecting the pair of base portions and a detection axis, which is a direction of detection of the force, and the direction of displacement of the force transmission device are arranged in parallel; the one of the base portions is a first fixed portion, a pair of connecting devices extending from the other base portion so as to interpose the pressure-sensitive portion are connected respectively to a pair of second fixed portions arranged at positions in symmetry with respect to the first fixed portion, the first fixed portion is fixedly supported by the force transmission device, and the second fixed portions are supported and fixed to portions where a line connecting the first fixed portion and the pair of second fixed portions intersect the housing.

A pressure sensor includes: a housing; an attachment having a pressure input orifice communicating with an interior of the housing; a first diaphragm that seals an opening of the pressure input orifice of the attachment, an external surface of the first diaphragm being a pressure receiving surface; a force transmitting member having an end which is coupled approximately perpendicular to a main surface of the first diaphragm, the main surface being opposite from the pressure receiving surface; a swing arm which is joined to the force transmitting member and is held to a retainer at a pivoting point as a fulcrum; and a pressure sensing element having a first end coupled to the retainer and a second end coupled to the swing arm, so that a displacement direction of the force transmitting member is the same direction as a line joining the first end and the second end. In this pressure sensor, the force transmitting member, the swing arm, the pressure sensing element, and the retainer are housed inside the housing, and the retainer is fixed to an inner wall of the housing.

Pressure sensor and method for manufacturing the same

A pressure sensor includes a housing, a pressure input orifice opened on a pipe sleeve formed on the housing, a diaphragm that seals the pressure input orifice and has one face as a pressure receiving face, a force transmitting unit connected to a central area of the other face of the diaphragm in the housing, and a pressure sensitive element whose detection direction of a force is a detection axis. A displacement direction and the detection axis of the force transmitting unit are roughly orthogonal to the pressure receiving face. One end and the other end of the pressure sensitive element are respectively fixed to the housing and the force transmitting unit with an adhesive therebetween, and the adhesive is an inorganic adhesive.

Growing community of inventors

Minamisoma, Japan

Hisao Motoyama