Abstract: A motor drive device that closes a mounting hole for mounting a fan unit by way of a fan fixing member is provided with a structure that can effectively improve operability for maintenance. A bar serving as a regulating member of a motor drive device has a first projecting piece that is formed so as to curve downwards after extending in the horizontal direction from a top part thereof, and a second projecting piece that projects downwards from a bottom part thereof, and by the first projecting piece being placed in an upper insertion part and the second projecting piece being placed in a lower insertion part, a fan unit is fixed in a mounting hole of a flange.

Abstract: A motor drive unit which improves the cooling ability. The motor drive unit comprises electronic components and a housing which surrounds the electronic components. The housing has a back plate to which the electronic components are fixed, a front plate which faces the back plate, and a first side plate and second side plate which face each other and extend from the back plate to the front plate. The first side plate has openings which pass through the first side plate and slants with respect to the back plate so as to approach the second side plate or separate from the second side plate the further from the back plate toward the front plate.

Abstract: A motor drive device, which supplies electric power from a power element to a motor, and dissipates heat of the power element by way of a heat sink, includes a temperature detector that detects the actual temperature of the heat sink and an electric current detector that detects electric current from the power element to the motor. An actual temperature variation calculation unit calculates an actual temperature variation of the heat sink relative to time from the actual temperature, and an estimated temperature variation calculation unit calculates an estimated temperature variation of the heat sink relative to time from the estimated temperature. A temperature abnormality determination unit determines a temperature abnormality of the heat sink according to whether or not the actual temperature variation is departing from a permitted range based on the estimated temperature variation.

Abstract: A power storage system includes a power generator that generates power by harvesting energy, a storage battery that is charged with a generated power of the power generator and that supplies power to a device, a voltage detector that detects a detected voltage of the storage battery, a primary battery for a backup power supply, a first switch disposed between the primary battery and the storage battery, and a switcher that compares the detected voltage with a predetermined threshold voltage and controls the first switch according to a comparison of the detected voltage and the predetermined threshold voltage. The switcher turns on the first switch to charge the storage battery with the backup power supply from the primary battery when the detected voltage decreases to the predetermined threshold voltage or less.

Abstract: A heatsink includes: a heatsink main body; a flange portion formed on the heatsink main body; and a filter plate detachably attached to an end portion on an inlet side of the heatsink main body. In the state where the filter plate is attached to the end portion on the inlet side of the heatsink main body, an outer shape of the filter plate is larger than an outer shape of the end portion on the inlet side of the heatsink main body. An insertion hole formed in the flange portion allows insertion of the filter plate to be inserted. A flange is formed on the filter plate and at an end portion on a side opposite to a forefront end of the filter plate in an insertion direction.

Abstract: Disclosed herein is an electroformed cutting blade having a cutting edge containing super abrasive grains. The cutting edge further contains filler particles formed of silicon-based organic material.

Abstract: An object of the present invention is to provide a fan unit, a motor drive device and a method of manufacturing the fan unit in which an assembly operation is facilitated by use of a small number of components, and in which thus it is possible to reduce the cost thereof. A fan unit includes: a fan which includes a motor and a casing; a base portion to which the fan is fixed by fixing of the casing; and a connector portion which can be connected to an external terminal for supplying power to the motor and which includes a conductive contact and a housing that is formed integrally with the base portion.

Abstract: A motor drive device detects the malfunction of a flow path in a heat sink based on the temperature of the device. The motor drive device includes: a temperature detection part which detects the temperature of the motor drive device; a temperature change calculating part which calculates the degree of change of the temperature with respect to time when the rotation number of a fan is controlled to a lower rotation number than a regular rotation number; an malfunction determination part which determines whether or not the degree of the change is different from a predetermined standard; and an malfunction signal generation part which generates a signal indicating that malfunction occurs in fluid flow when it is determined that the degree of the change is different from the standard.

Abstract: An alloy flake production apparatus (1) includes a crystallinity control device (2) for controlling an alloy crystal structure of fed alloy flakes to a desired state, a cooling device (3) for cooling the alloy flakes discharged from the crystallinity control device (2), and a chamber for keeping these devices under reduced pressure or under an inert gas atmosphere. The crystallinity control device (2) has a rotary heating drum (21) in a cylindrical shape for heating the fed alloy flakes, and a switching device (23) for switching between storage and discharge of the alloy flakes fed to an inner wall side of the heating drum (21), so that long-time heat treatment is uniformly applied to the alloy flakes immediately after being made by ingot crushing. The heating drum (21) preferably has a scooping blade plate (22) for scooping up alloy flakes fed to the inner wall side with its rotation.

Abstract: A motor includes a motor housing, a motor body, and a damping member. The motor body includes a drive shaft. The motor body is housed in the motor housing. The damping member is disposed on an outer surface of the motor housing. The damping member includes a damping layer and a constraining layer. The damping layer is made of an organic polymeric material, and bonded to the outer surface of the motor housing. The constraining layer is made of at least one of a resin mixed with an inorganic compound and an elastomer mixed with an inorganic compound. The constraining layer is disposed on the damping layer.

Abstract: A heat sink includes: a heat sink body made of a metal material which includes a plurality of heat radiating fins having a flat plate shape, the heat radiating fins being arranged parallel to each other on one surface side of a base having a flat plate shape at intervals in a direction along a surface of the base; and a bridge member made of a metal material which has a plurality of grooves parallel to each other, the grooves being formed at a pitch equal to an arrangement pitch of the heat radiating fins of the heat sink body, and the grooves accommodating distal ends of the respective heat radiating fins in a press-fitted state.

Abstract: A power storage system includes: a first storage battery that is configured to be supplied with power generated by a power generation element performing environmental power generation and to supply power to an external load apparatus; a second storage battery that is configured to have a capacity larger than a capacity of the first storage battery, and to supply power to the external load apparatus; a first switch unit that performs switching between an electrical connection state and disconnection state between the first storage battery and the second storage battery; and a first changeover unit that compares a voltage of the first storage battery with a first threshold voltage which is equal to or higher than a voltage causing the external load apparatus to be operated, and controls the first switch unit according to a comparison result.

Abstract: A motor drive device, which supplies electric power from a power element to a motor, and dissipates heat of the power element by way of a heat sink, includes a temperature detector that detects the actual temperature of the heat sink and an electric current detector that detects electric current from the power element to the motor. An actual temperature variation calculation unit calculates an actual temperature variation of the heat sink relative to time from the actual temperature, and an estimated temperature variation calculation unit calculates an estimated temperature variation of the heat sink relative to time from the estimated temperature. A temperature abnormality determination unit determines a temperature abnormality of the heat sink according to whether or not the actual temperature variation is departing from a permitted range based on the estimated temperature variation.

Abstract: A power storage system includes a power generation element that performs environmental power generation, a first storage battery that receives power generated by the power generation element and supplies the power to a load device, a second storage battery that has a capacitance smaller than that of the first storage battery and is connected in series with the first storage battery, a first switcher that is connected in parallel to the second storage battery, short-circuits both terminals of the second storage battery in a closed state, and releases a short-circuited state of the second storage battery in an open state, and a switching unit that controls the opened and closed states of the first switcher.

Abstract: A power storage system of the invention, includes: a power generator; a first storage battery; a second storage battery having smaller capacitance than that of the first storage battery; a first switcher that connects or disconnects the first storage battery to or from a power supply line and a load device; a second switcher that connects or disconnects the second storage battery to or from the power supply line and the load device; a first switching unit that compares a voltage supplied to the load device with first and second predetermined threshold voltages and controls the first switcher according to a result of the comparison; and a second switching unit that compares the voltage supplied to the load device with third and fourth predetermined threshold voltages and controls the second switcher according to a result of the comparison.

Abstract: To provide an industrially useful ?-olefin•((meth)acrylic acid)-based olefin copolymer having both a high molecular weight and a high comonomer content, a catalyst component capable of realizing a production of two different kinds of ?-olefin•((meth)acrylic acid)-based olefin copolymers, and a production process using the catalyst. An ?-olefin•((meth)acrylic acid)-based olefin copolymer is produced by using a metal complex complexed with a ligand represented by the following formula (Y is phosphorus or arsenic) for a catalyst composition.

Abstract: A tactile sensation providing apparatus for providing a tactile sensation based on an operator's input to an object, without wasting an existing application resource constituting a user interface, and a control method for the tactile sensation providing apparatus are provided. A tactile sensation providing apparatus 1 includes a touch sensor 40, a tactile sensation providing unit 50 configured to vibrate a touch face of the touch sensor 40, a display unit 30, and a control unit 10 configured to set a tactile sensation to be provided by the tactile sensation providing unit 50 for an object displayed on the display unit 30 based on information about the tactile sensation supplied from application software and, when detecting an input to the object, to control the tactile sensation providing unit 50 such that the tactile sensation set for the object is provided to a pressing object pressing the touch face.

Abstract: In a motor drive device of the present invention, a motor control unit is disposed on a first surface of an attaching unit, and a heat sink is disposed on a second surface opposite to the first surface. A first duct connects the second surface and the heat sink with each other. A second duct is disposed on the first surface, and a fan motor is disposed in the second duct. A space inside the first duct in communication with only a second opening of the attaching unit, and a space inside the second duct is in communication with both a first opening and the second opening of the attaching unit.

Abstract: A motor drive device that closes a mounting hole for mounting a fan unit by way of a fan fixing member is provided with a structure that can effectively improve operability for maintenance. A bar serving as a regulating member of a motor drive device has a first projecting piece that is formed so as to curve downwards after extending in the horizontal direction from a top part thereof, and a second projecting piece that projects downwards from a bottom part thereof, and by the first projecting piece being placed in an upper insertion part and the second projecting piece being placed in a lower insertion part, a fan unit is fixed in a mounting hole of a flange.

Abstract: A fan cover (10), on which a fan motor (11) is mounted, includes: a fan cover flat portion in which an opening portion (12) is formed; a protruding portion (13) extending from the fan cover flat portion around the opening portion; and a supporting portion (14), which is arranged on the protruding portion, for supporting the fan motor, wherein a distance between the fan cover flat portion and the supporting portion of the protruding portion is smaller than the thickness of the fan motor.