Abstract: A charging system of electric vehicles comprises: a delivery box 100 having a plurality of article storage boxes 104 each locked or unlocked by electrically operated locking devices 1042, 1043, the article storage boxes 104 being used to receive delivered or mailed articles in apartment buildings; delivery box controller 101 for controlling locking and unlocking of the locking devices 1042, 1043; a power supply circuit 202 for electrically charging the electric vehicles 300; and a control circuit 201 for controlling the power supply circuit 202, wherein the delivery box controller 101 regulates electrically charging services of the electric vehicles through the power supply circuit 202 and electrification controller 201 in addition to controlling operation of the locking devices 1042, 1043 for the delivery box 100.

Abstract: A pump case of an electric pump is constructed by coupling a first pressed member formed with a cylindrical part for holding a first rolling ball bearing rotatably supporting a rotary shaft, and a second pressed member formed with a recess for receiving an inner rotor provided at a tip end of the rotary shaft to each other. Because the first pressed member and the second pressed member are formed by deep-drawing work, it is possible to achieve simplification of the structure and reduction of the cost, as compared with the pump case which has been produced from an aluminum die casting or the like, as in the related art.

Abstract: The invention relates to an internal gear pump including: a rotor member including an outer rotor provided with inner teeth to which a torque supplied from a driving device is transmittable; an inner rotor provided with outer teeth engageable with the inner teeth of the outer rotor so to be driven by a rotation of the outer rotor, wherein a rotation axis of the inner rotor is eccentric with respect to a center of the rotor member; a pair of housings provided on opposite sides of the rotor member and the inner rotor to support the rotor member and the inner rotor; and at least one rolling bearing provided between at least one of the housings and the rotor member.

Abstract: The present invention provides a circuit board in which the through hole is highly hermetically sealed, a manufacturing method thereof, and an electronic component including the same. A circuit board (1) including an insulating substrate (10), and a through hole (11) that is formed in the thickness direction of the insulating substrate (10) for connecting a first main surface (10a) of the insulating substrate (10) to a second main surface (10b) of the insulating substrate (10) includes a conductive film (12) that is formed on the inner wall of the through hole (11) and around the openings of the through hole (11) on the first and second main surfaces (10a, 10b), and a filler (14) that is filled in the through hole (11). The filler (14) is filled in a non-foamed state.

Abstract: In a method of operating an electric motor which drives an auxiliary oil pump for supplying a hydraulic pressure of an ATF to a transmission, only at an idle stop of an engine via a rotation shaft pivotally supported by ball bearings, the electric motor is rotated at a very low speed or in an intermittent manner when an automobile is traveling and the auxiliary oil pump is not used. According to the configuration, the electric motor is slightly rotated during when the automobile is traveling, whereby impressions are prevented from being formed on the ball bearings.

Abstract: A pump case of an electric pump is constructed by coupling a first pressed member formed with a cylindrical part for holding a first rolling ball bearing rotatably supporting a rotary shaft, and a second pressed member formed with a recess for receiving an inner rotor provided at a tip end of the rotary shaft to each other. Because the first pressed member and the second pressed member are formed by deep-drawing work, it is possible to achieve simplification of the structure and reduction of the cost, as compared with the pump case which has been produced from an aluminum die casting or the like, as in the related art.

Abstract: The invention relates to an internal gear pump including: a rotor member including an outer rotor provided with inner teeth to which a torque supplied from a driving device is transmittable; an inner rotor provided with outer teeth engageable with the inner teeth of the outer rotor so to be driven by a rotation of the outer rotor, wherein a rotation axis of the inner rotor is eccentric with respect to a center of the rotor member; a pair of housings provided on opposite sides of the rotor member and the inner rotor to support the rotor member and the inner rotor; and at least one rolling bearing provided between at least one of the housings and the rotor member.

Abstract: In an electric pump unit in which a single shaft (main shaft) functions both as a rotation shaft of a pump section and that of a motor section, a rotor of a motor has a structure in which a magnet is embedded in a rotor core (IPM structure). According to the configuration, in the electric pump unit of the invention, it is not required to dispose a protective ring in the periphery of the rotor core. In addition, rotation of the main shaft can be supported by the inner-diameter face of the stator core. Accordingly, the electric pump unit of the invention can be configured as an electric pump unit which is lighter, more compact, and more economical as compared with a conventional product.

Abstract: In a method of operating an electric motor which drives an auxiliary oil pump for supplying a hydraulic pressure of an ATF to a transmission, only at an idle stop of an engine via a rotation shaft pivotally supported by ball bearings, the electric motor is rotated at a very low speed or in an intermittent manner when an automobile is traveling and the auxiliary oil pump is not used. According to the configuration, the electric motor is slightly rotated during when the automobile is traveling, whereby impressions are prevented from being formed on the ball bearings.

Abstract: A novel electric internal gear pump integrated with motor is provided which has a relatively compact structure adapted for stable support of a main shaft. The pump includes: a rotor portion 4 having an outer rotor 25 and an inner rotor 26; an electric motor portion 3 for driving the inner rotor 26 into rotation; and a main shaft 5 including a drive shaft of the electric motor portion and a rotary shaft of the inner rotor 26, the drive shaft and rotary shaft formed coaxially and integrally. The main shaft 5 is supported only by a first bearing 10 and a second bearing 16 on axially opposite sides thereof. The rotor portion 4 is interposed between the bearings 10, 16.

Abstract: For extension of service lives of rollers and discs of a toroidal continuously variable transmission, input discs, output discs and rollers are formed of a heat-resisting bearing steel. At least a roller has its peripheral surface subjected to a shot peening for achieving a compressive residual stress of 0.6 to 1.2 GPa and a hardness of HRC 63 to 66 at the outermost surface.

Abstract: For extension of service lives of rollers and discs of a toroidal continuously variable transmission, input discs, output discs and rollers are formed of a heat-resisting bearing steel. At least a roller has its peripheral surface subjected to a shot peening for achieving a compressive residual stress of 0.6 to 1.2 GPa and a hardness of HRC 63 to 66 at the outermost surface.

Abstract: The invention is a method for the accurate control of the conversion film thickness produced on aluminiferous metal materials by fluorine-containing acidic conversion treatment baths; and a simple method for determining the EFC value (Effective Fluorine Concentration). The EFC value is determined by potentiometric titration of a fluorine-containing acidic conversion treatment bath having pH<4 without prior pH adjustment using a fluorine ion electrode as indicator electrode. The titrant is an aqueous solution containing the Al ion, La ion, Y ion, Zr ion, Ga ion, Ce ion, or Be ion, an inflection point in the potential curve is used as an indication of the activity of the conversion treatment bath.

Abstract: A radial roller bearing consisting of rings and rollers, either the rolling contact surface of each roller or the raceway surfaces of the rings or both are crowned, the amount of crowning which is defined as .DELTA.t/l i.e., the depth of crowning .DELTA.t to the effective roller length of l, is set to 0.0007 to 0.002, the ring has a rib at its one end, the end surface of each roller which makes contact with the rib is spherically convex, while the contacted surface of the rib is spherically concave.