Abstract: A piston drive device includes: a motor; an eccentric body provided at an eccentric position with respect to a rotation axis of the motor and revolving about the rotation axis in conjunction with rotation of the motor; a piston holder swinging about the rotation axis in conjunction with revolving of the eccentric body; and pistons held by the piston holder in such a manner as to be positioned radially about an eccentric axis of the eccentric body, wherein the pistons are arranged in a same plane perpendicular to the eccentric axis.

Abstract: A rotor of an inner rotor type motor includes: a circular plate portion rotatably supported about an axis; an eccentric portion provided in the circular plate portion and eccentric with respect to the axis; a peripheral wall portion extending from an outer edge of the circular plate portion; and a permanent magnet held on the peripheral wall portion, wherein a circular plate portion includes a hole portion located radially outward from the eccentric portion, and the peripheral wall portion includes a protruding portion protruding radially inward and being located in a side opposite to the hole portion with respect to the eccentric portion.

Abstract: A blower device includes: a fan; a motor rotating the fan; a cover covering a stator and a coil of the motor; a terminal electrically connected to the coil and protruding from the cover; a printed circuit board electrically connected to the terminal; a housing including a receiving hole receiving the terminal and supporting the stator; and an elastic body sandwiched between the cover and the housing and formed into an annular shape, wherein the elastic body includes a first seal portion surrounding the terminal within the receiving hole, the cover includes a protruding portion, a protruding height of the protruding portion from the cover is lower than that of the terminal from the cover, and the protruding portion supports the first seal portion.

Abstract: A blower device includes: a fan; a motor rotating the fan; a case supporting the motor; and a heat generating component housed in the case, wherein the case includes: a main body member defining a flow path portion that guides blown air, generated by rotation of the fan, to the heat generating component; and a closing member closing an opening formed on the flow path portion, the main body member includes a fixing portion provided on the flow path portion and fixing the closing member, and the fixing portion is located inside an inner peripheral edge of the opening.

Abstract: A drive device includes: a board including an opening; and a motor including: a rotational shaft; a housing supporting the rotational shaft for rotation, fixed to the board so as to surround the opening, and having a cylindrical shape; a bearing supporting the rotational shaft for rotation and press-fitted onto an inner peripheral surface of the housing; and a thrust cover supporting an end of the rotational shaft and fixed onto the inner peripheral surface of the housing by an adhesive.

Abstract: A blower device includes: a fan; a motor rotating the fan, and including: a stator; a coil; a housing supporting the stator; and a cover covering the stator and the coil; a case housing a printed circuit board electrically connected to the coil; a first elastic body; and a second elastic body.

Abstract: An electric device includes: a motor; a connector; an intermediate terminal electrically connecting the motor and the connector; and a holding plate holding the motor, the connector, and the intermediate terminal, wherein the motor is held on one side of the holding plate, the connector and the intermediate terminal are held on another side of the holding plate, the motor includes a coil terminal, the coil terminal is electrically connected to a coil of the motor and penetrates the holding plate from the one side to the another side, the connector includes a connector terminal, and the intermediate terminal is welded and electrically connected to the coil terminal and the connector terminal.

Abstract: An electric pump includes: a motor; an impeller rotated by the motor; a motor housing portion that houses the motor; an impeller housing portion that houses the impeller and is positioned at one side with respect to the motor housing portion in a rotation axis of the motor; an introduction pipe portion that introduces a fluid into the impeller housing portion and is positioned at the one side with respect to the motor housing portion; a discharge pipe portion that discharges the fluid from the impeller housing portion; a printed circuit board electrically connected to a coil of the motor and positioned at the one side with respect to the motor housing portion; and an electronic part mounted on the printed circuit board, wherein the printed circuit board includes a cutout portion and faces the impeller housing portion.

Abstract: A motor device includes: a motor body including a rotor, multi-phase coils for rotating the rotor, and an oil-retaining bearing supporting the rotor for rotation; and a drive control unit detecting a position of the rotor based on counter electromotive force of any of the multi-phase coils, and controlling energization of the multi-phase coils according to the position of the rotor, wherein the drive control unit feedback-controls energization of the multi-phase coils such that rotational speed of the rotor does not fall below a threshold value at which detection of rotational position of the rotor based on the counter electromotive force is impossible.

Abstract: A magnetic reduction device includes: a base portion; a rotor rotatably supported relative to the base portion, and supporting first permanent magnets having different polarities alternatively arranged in a circumferential direction; a magnet support portion supporting second permanent magnets having different polarities alternatively arranged in the circumferential direction, the second permanent magnets being arranged concentrically with the first permanent magnets; and a soft magnetic body support portion supporting soft magnetic bodies arranged between the first permanent magnets and the second permanent magnets along the circumferential direction, and being in non-contact with the rotor and the magnet support portion.

Abstract: While there are various methods for acquiring biological information based on pulse waveforms, none of the methods have been implemented in a biological information reading device that can be constantly operated stably. Provided is a biological information reading device which has achieved high accuracy by removing disturbance components from a pulse signal acquired by means of a multi-axis pressure sensor or a plurality of single-axis pressure sensors, and which can be attached to an examinee at all times for continuous observation taking advantage of the small and light-weight feature of the pressure sensors.

Abstract: An electric pump includes: an impeller; a rotor connected to the impeller; a housing accommodating the rotor; divided iron cores surrounding the housing from an outside of the housing; divided coil bobbins respectively attached to the divided iron cores; divided coils respectively wound around the divided coil bobbins; and a bus bar unit including bus bars, wherein the housing includes a bottom wall portion directly or indirectly holding a shaft portion in a standing manner, the shaft portion supports the rotor for rotation, the bottom wall portion overlaps at least a part of the divided coils in an orthogonal direction orthogonal to an axial direction of the rotor, and the bus bar unit is conductively connected to the divided coils and is held by the bottom wall portion.

Abstract: An electric pump includes: a motor; an impeller rotated by the motor; a motor housing portion that houses the motor; an impeller housing portion that houses the impeller and is positioned at one side with respect to the motor housing portion in a rotation axis of the motor; an introduction pipe portion that introduces a fluid into the impeller housing portion and is positioned at the one side with respect to the motor housing portion; a discharge pipe portion that discharges the fluid from the impeller housing portion; and a printed circuit board electrically connected to a coil of the motor and positioned at the one side with respect to the motor housing portion.

Abstract: An electric pump includes: a motor; an impeller rotated by the motor; a motor housing portion that houses the motor; an impeller housing portion that houses the impeller and is positioned at one side with respect to the motor housing portion in a rotation axis of the motor; an introduction pipe portion that introduces a fluid into the impeller housing portion and is positioned at the one side with respect to the motor housing portion; a discharge pipe portion that discharges the fluid from the impeller housing portion; a printed circuit board electrically connected to a coil of the motor and positioned at the one side with respect to the motor housing portion; and an electronic part mounted on the printed circuit board, wherein the printed circuit board faces the impeller housing portion and is positioned at the one side with respect to the impeller.

Abstract: A blower device includes: a fan; a motor rotating the fan; a case supporting the motor; and a heat generating component housed in the case, wherein the case includes: a main body member defining a flow path portion that guides blown air, generated by rotation of the fan, to the heat generating component; and a closing member closing an opening formed on the flow path portion, the main body member includes a fixing portion provided on the flow path portion and fixing the closing member, and the fixing portion is located inside an inner peripheral edge of the opening.

Abstract: A blower device includes: a fan; a motor rotating the fan; a cover covering a stator and a coil of the motor; a printed circuit board electrically connected to the coil; a case housing the printed circuit board and facing the fan; and an elastic body arranged between the case and the cover and formed into an annular shape, wherein the cover is formed with a vent hole arranged radially outward from the elastic body.

Abstract: A motor includes: a rotor; a coil; a terminal electrically connected to the coil; a stator including an annular portion, a tooth portion extending radially outward from the annular portion, and a magnetic pole portion formed at an end of the tooth portion and facing the rotor; and an insulator including an annular covering portion covering at least a part of the annular portion, and a tooth covering portion extending radially outward from the annular covering portion and covering at least a part of the tooth portion, the coil being wound around the tooth covering portion, wherein the annular portion is provided with an engaged portion, the annular covering portion is provided with a holding portion holding the terminal, and the holding portion is provided with an engaging portion engaged with the engaged portion.

Abstract: A blower device includes: a fan; a motor rotating the fan, and including: a stator; a coil; a housing supporting the stator; and a cover covering the stator and the coil; a case housing a printed circuit board electrically connected to the coil; a first elastic body; and a second elastic body.

Abstract: A blower device includes: a motor; a fan rotated by the motor; a printed circuit board electrically connected to the motor; an electronic part electrically connected to the printed circuit board; a first case, the motor and the fan being positioned in one side with respect to the first case, the printed circuit board and the electronic part being positioned in another side with respect to the first case; a holder holding the electronic part such that the electronic part is spaced apart from the printed circuit board and is in thermal contact with the first case; and a second case fixed in the other side with respect to the first case and covering the printed circuit board, the electronic part, and the holder.

Abstract: A blower device includes: a fan; a motor rotating the fan; a cover covering a stator and a coil of the motor; a terminal electrically connected to the coil and protruding from the cover; a printed circuit board electrically connected to the terminal; a housing including a receiving hole receiving the terminal and supporting the stator; and an elastic body sandwiched between the cover and the housing and formed into an annular shape, wherein the elastic body includes a first seal portion surrounding the terminal within the receiving hole, the cover includes a protruding portion, a protruding height of the protruding portion from the cover is lower than that of the terminal from the cover, and the protruding portion supports the first seal portion.