Abstract: An electric liquid pump has a motor, a liquid pump including an inner rotor having an external tooth and integrated with an axial end of a shaft of the motor and an outer rotor having an internal tooth meshing with the external tooth and forming a gap, a motor case having a box shape and including therein first and second accommodation chambers and a partition wall, and a body including a centering body portion, a general body portion, and a bearing portion formed to penetrate the centering body portion and the general body portion. The motor case and the body are made of resins. A connection body portion extends in a radial direction of the shaft. A connection case portion extends in the radial direction. The connection body portion and the connection case portion are provided with attachment portions having a through-hole-shape at positions facing each other.

Abstract: An electric liquid pump has a motor, a liquid pump including an inner rotor having an external tooth and integrated with an axial end of a shaft of the motor and an outer rotor having an internal tooth meshing with the external tooth and forming a gap into which a liquid is suctioned and from which the liquid is discharged, a motor case having a box shape and including therein a first accommodation chamber, a second accommodation chamber, and a partition wall allowing the first and second accommodation chambers to communicate with each other, and a body including a centering body portion, a general body portion, and a bearing portion formed to penetrate the centering body portion and the general body portion. The inner rotor or the outer rotor is made of a thermosetting resin.

Abstract: An electric liquid pump has a motor, a liquid pump including an inner rotor having an external tooth and integrated with an axial end of a shaft of the motor and an outer rotor having an internal tooth meshing with the external tooth and forming a gap, a motor case having a box shape and including therein first and second accommodation chambers and a partition wall allowing the first and second accommodation chambers to communicate with each other, and a body including a centering body portion, a general body portion, and a bearing portion formed to penetrate the centering body portion and the general body portion. The shaft is integrally formed with a sleeve of the shaft and a general shaft portion. The sleeve and the general shaft portion are made of the same material. The magnet portion is made of a bonded magnet and is integrated with the sleeve.

Abstract: An electric liquid pump has a motor, a liquid pump including an inner rotor having an external tooth and integrated with an axial end of a shaft of the motor and an outer rotor having an internal tooth meshing with the external tooth and forming a gap, a motor case having a box shape and including therein first and second accommodation chambers and a partition wall, and a body including a centering body portion, a general body portion, and a bearing portion formed to penetrate the centering body portion and the general body portion. The motor case and the body are made of resins. A connection body portion extends in a radial direction of the shaft. A connection case portion extends in the radial direction. The connection body portion and the connection case portion are provided with attachment portions having a through-hole-shape at positions facing each other.

Abstract: An electric liquid pump has a motor, a liquid pump including an inner rotor having an external tooth and integrated with an axial end of a shaft of the motor and an outer rotor having an internal tooth meshing with the external tooth and forming a gap into which a liquid is suctioned and from which the liquid is discharged, a motor case having a box shape and including therein a first accommodation chamber, a second accommodation chamber, and a partition wall allowing the first and second accommodation chambers to communicate with each other, and a body including a centering body portion, a general body portion, and a bearing portion formed to penetrate the centering body portion and the general body portion. The entire body is made of a thermosetting resin.

Abstract: An electric liquid pump has a motor, a liquid pump including an inner rotor having an external tooth and integrated with an axial end of a shaft of the motor and an outer rotor having an internal tooth meshing with the external tooth and forming a gap into which a liquid is suctioned and from which the liquid is discharged, a motor case having a box shape and including therein a first accommodation chamber, a second accommodation chamber, and a partition wall allowing the first and second accommodation chambers to communicate with each other, and a body including a centering body portion, a general body portion, and a bearing portion formed to penetrate the centering body portion and the general body portion. Each of the inner rotor, the outer rotor, and the body is made of a thermosetting resin, and the magnet portion is a bonded magnet.

Abstract: A capacitive element 100 includes a P-type semiconductor substrate 110, a capacitor structure 150 formed above the P-type semiconductor substrate 110, and a shielding layer 130 formed between the P-type semiconductor substrate 110 and the capacitor structure 150 and electrically connected to the P-type semiconductor substrate 110. Preferably, a pair of electrodes 150a and 150b in the capacitor structure 150 are at a first potential V1 and a second potential V2 respectively, and the P-type semiconductor substrate 110 and the shielding layer 130 are at a third potential V3.

Abstract: An oil pump includes: a shaft member; an inner rotor configured to rotate integrally with the shaft member; an outer rotor forming a rotor chamber into which oil is sucked from a suction passage and from which the oil is discharged toward a discharge passage, between the inner rotor and the outer rotor; a body member having a recess-shaped housing chamber in which each rotor is housed so as to be rotatable about an axis; and a cover member attached so as to close the housing chamber. The rotor chamber has first and second suction ports through each of which the oil to be sucked from the suction passage passes. The oil pump includes a straightening member branching the suction passage from a main path to the first suction port side and the second suction port side.

Abstract: An oil pump includes: a shaft member; an inner rotor configured to rotate integrally with the shaft member; an outer rotor forming a rotor chamber into which oil is sucked from a suction passage and from which the oil is discharged toward a discharge passage, between the inner rotor and the outer rotor; a body member having a recess-shaped housing chamber in which each rotor is housed so as to be rotatable about an axis; and a cover member attached so as to close the housing chamber. The rotor chamber has first and second suction ports through each of which the oil to be sucked from the suction passage passes. The oil pump includes a straightening member branching the suction passage from a main path to the first suction port side and the second suction port side.

Abstract: A gear pump includes: an inner rotor having external teeth; an outer rotor having a tubular inner housing portion in which the inner rotor is rotatably housed in an eccentric state, and internal teeth meshing with the external teeth; a first core having a tubular rotor housing portion in which the inner and outer rotors are housed, and a flange portion projecting radially outward from a tube wall of the rotor housing portion; a board-shaped second core having a contact portion in contact with the flange portion in an axial direction, and closing an opening of the rotor housing portion; and a housing opposing the second core and made of a resin. A gap is formed between opposing surfaces of the second core and the housing in a state where the flange portion is in contact with the contact portion and the housing opposes the second core.

Abstract: In a duct device that includes a duct body 9 having: an air flow path 90 defined thereinside; and a first divisional body 1 and a second divisional body 5 combined in a combining direction in which the first and second divisional bodies 1 and 5 approach each other, at time of positioning when a first duct portion 2 and a second duct portion 6 oppose each other, and an engagement portion 33 and an engagement projection 7 do not engage with each other, an outer wall portion 65 covers, from an outer side, a tip portion 21 that is a front end of the first duct portion 2, and the engagement portion 33 contacts with the engagement projection 7 in the combining direction, and covers a second engagement surface 72 that is a rear end of the engagement projection 7, with an engagement wrap portion 35, from the outer side.

Abstract: A semiconductor device includes a semiconductor substrate, a trench provided in the semiconductor substrate, a trench gate formed in the trench, a vertical transistor having the trench gate, an active region having the vertical transistor, a field region surrounding the active region and having a protection diode, and a field insulating film formed on a surface of the semiconductor substrate, the protection diode being formed on the field insulating film. The trench gate includes a first polysilicon layer and has an embedded part embedded in the trench and an extension part connected to the embedded part and extending onto the surface of the semiconductor substrate, the protection diode includes a second polysilicon layer thicker than the first polysilicon layer, and an overlapping part having the second polysilicon layer is formed on the extension part.

Abstract: A gear pump includes: an inner rotor having external teeth; an outer rotor having a tubular inner housing portion in which the inner rotor is rotatably housed in an eccentric state, and internal teeth meshing with the external teeth; a first core having a tubular rotor housing portion in which the inner and outer rotors are housed, and a flange portion projecting radially outward from a tube wall of the rotor housing portion; a board-shaped second core having a contact portion in contact with the flange portion in an axial direction, and closing an opening of the rotor housing portion; and a housing opposing the second core and made of a resin. A gap is formed between opposing surfaces of the second core and the housing in a state where the flange portion is in contact with the contact portion and the housing opposes the second core.

Abstract: A semiconductor device having a first surface formed at a first height and a second surface formed at a second height on a semiconductor substrate includes: a base region formed in the semiconductor substrate; a trench formed from the first surface and the second surface into the semiconductor substrate; a gate insulating film covering an inner side of the trench; a gate electrode embedded to a third height; an insulating film formed on the gate electrode; a first region which has the first surface and in which a base contact region is formed; and a second region which has the second surface and in which a source region is formed, the first region and the second region being alternately arranged in the trench extension direction to prevent a reduction in channel formation density.

Abstract: Provided is a semiconductor device, including: a drain region of a first conductivity type and a source region of the first conductivity type in a semiconductor substrate; a base region of a second conductivity type between the drain region and the source region; a base contact region of the second conductivity type in the base region; a gate electrode on the base region through a gate insulating film; a bidirectional diode overlapping with the gate electrode in a first direction perpendicular to the semiconductor substrate, and having one end electrically connected to the gate electrode and the other end electrically connected to the source region; a source metal layer electrically connected to the source region, the base contact region, and the other end of the bidirectional diode; and a gate metal layer electrically connected to the gate electrode, and overlapping with the source metal layer in the first direction.

Abstract: A semiconductor device includes a semiconductor substrate, a trench provided in the semiconductor substrate, a trench gate formed in the trench, a vertical transistor having the trench gate, an active region having the vertical transistor, a field region surrounding the active region and having a protection diode, and a field insulating film formed on a surface of the semiconductor substrate, the protection diode being formed on the field insulating film. The trench gate includes a first polysilicon layer and has an embedded part embedded in the trench and an extension part connected to the embedded part and extending onto the surface of the semiconductor substrate, the protection diode includes a second polysilicon layer thicker than the first polysilicon layer, and an overlapping part having the second polysilicon layer is formed on the extension part.

Abstract: In a duct device that includes a duct body 9 having: an air flow path 90 defined thereinside; and a first divisional body 1 and a second divisional body 5 combined in a combining direction in which the first and second divisional bodies 1 and 5 approach each other, at time of positioning when a first duct portion 2 and a second duct portion 6 oppose each other, and an engagement portion 33 and an engagement projection 7 do not engage with each other, an outer wall portion 65 covers, from an outer side, a tip portion 21 that is a front end of the first duct portion 2, and the engagement portion 33 contacts with the engagement projection 7 in the combining direction, and covers a second engagement surface 72 that is a rear end of the engagement projection 7, with an engagement wrap portion 35, from the outer side.

Abstract: A semiconductor device in which a trench in a cell outer peripheral region configured to pull out a gate electrode and a trench in a cell region having a vertical transistor are formed with the same width to enable a reduction in chip area, and a manufacturing method thereof in which a gate contact hole is formed directly on a trench in a cell outer peripheral region on a self-alignment basis, and a gate wiring electrode is connected thereto are provided.

Abstract: Provided is a semiconductor device, including: a drain region of a first conductivity type and a source region of the first conductivity type in a semiconductor substrate; a base region of a second conductivity type between the drain region and the source region; a base contact region of the second conductivity type in the base region; a gate electrode on the base region through a gate insulating film; a bidirectional diode overlapping with the gate electrode in a first direction perpendicular to the semiconductor substrate, and having one end electrically connected to the gate electrode and the other end electrically connected to the source region; a source metal layer electrically connected to the source region, the base contact region, and the other end of the bidirectional diode; and a gate metal layer electrically connected to the gate electrode, and overlapping with the source metal layer in the first direction.

Abstract: To obtain a semiconductor device in which a reduction in channel formation density in a trench extending direction is suppressed, provided is a semiconductor device including a first region and a second region alternately arranged in the trench extending direction. The first region includes a first front surface semiconductor electrode layer of a first conductivity type having a portion along an outer side surface of the trench from the front surface of the semiconductor device to the first height to which a gate electrode is embedded into the trench. The second region includes a base contact region having a depth from the front surface of the semiconductor device to the second height higher than the first height and a second front surface semiconductor electrode layer of the first conductivity type from the first height to the second height.