Abstract: The present technology relates to a phase locked loop and a control method therefor, which are capable of achieving low power consumption and good phase noise while suppressing the growth of circuit area.

Abstract: An image pickup module including: an image pickup unit having a plurality of stacked semiconductor devices, the plurality of stacked semiconductor devices including an image pickup sensor; and a frame including a hollow portion in which the image pickup unit is inserted, wherein the image pickup unit includes a first side surface orthogonal to a principal surface of the image pickup sensor, and a second side surface opposed to the first side surface, and two edges of four edges defining the first side surface of the image pickup unit are in contact with an inner surface of the frame, the two edges being orthogonal to the principal surface of the image pickup device, and the second side surface is not in contact with the inner surface of the frame.

Abstract: A manufacturing method of an optical unit for endoscope includes: a process of crimping a bonding sheet including a curable resin film to a release substrate having a release surface which is an optical flat surface; a mirror-finishing process of performing a partial curing treatment on a predetermined region of the bonding sheet to process the predetermined region into an optical flat surface; a process of fabricating a laminated wafer by laminating a first element wafer including a first optical element and a second element wafer including a second optical element, with the bonding sheet being arranged between the first element wafer and the second element wafer; a curing process of performing a curing treatment on an uncured region of the bonding sheet; and a process of cutting the laminated wafer and segmenting the laminated wafer into optical units.

Abstract: A multi-layer piezoelectric element includes: a stacked body in which piezoelectric layers and internal electrode layers are laminated; a conductor layer disposed on a side face of the stacked body; a conductive joining material layer disposed on a surface of the conductor layer; and an external electrode joined to the conductor layer via the conductive joining material layer, the conductive joining material layer comprising solder and a conductive adhesive, the solder constituting an end of the conductive joining material layer which end confronts an end of the external electrode to be connected to an external circuit. There is provided a multi-layer piezoelectric element which suppresses separation of an end on an input/output side of the external electrode and is driven stably for a long period of time, an injection device and a fuel injection system which are provided with the multi-layer piezoelectric element.

Abstract: The present technology relates to a phase locked loop and a control method therefor, which are capable of achieving low power consumption and good phase noise while suppressing the growth of circuit area.

Abstract: This electric motor includes: a brushless motor (20); and a control device (50) that is coupled integrally to an end of a motor case (11) in an axial direction. The control device (50) includes: a bus bar unit main body (53) that has a base unit (54) with a plurality of bus bars wired thereinside and has a connector unit (58) provided integrally on the base unit (54) and led out to an outside of a housing (10); a motor drive unit (66) that drives the brushless motor (20); and a motor control unit (71) that controls the motor drive unit (66). The motor drive unit (66) is attached to a first main surface (51) of the base unit (54) while the motor control unit (71) is attached to a second main surface (52) of the base unit (54).

Abstract: A gear shaft of an output gear in a speed reducer of an in-wheel motor driving device is supported at a first end thereof and a second end thereof with respect to a housing. The gear shaft of the output gear is formed with a spline hole. The spline hole provides a spline-connection with an output shaft of a wheel hub.

Abstract: A multi-layer piezoelectric element includes: a stacked body in which piezoelectric layers and internal electrode layers are laminated; a conductor layer disposed on a side face of the stacked body; a conductive joining material layer disposed on a surface of the conductor layer; and an external electrode joined to the conductor layer via the conductive joining material layer, the conductive joining material layer comprising solder and a conductive adhesive, the solder constituting an end of the conductive joining material layer which end confronts an end of the external electrode to be connected to an external circuit. There is provided a multi-layer piezoelectric element which suppresses separation of an end on an input/output side of the external electrode and is driven stably for a long period of time, an injection device and a fuel injection system which are provided with the multi-layer piezoelectric element.

Abstract: A multi-layer piezoelectric element includes: a stacked body comprising an active section, and inactive sections disposed at opposite ends in a stacking direction of the active section; an electrically-conductive bonding material disposed on a side surface of the stacked body from the active section to the inactive sections; and an external electrode plate attached, through the electrically-conductive bonding material, to the side surface of the stacked body, a spacing between a side surface of at least one of the inactive sections and the external electrode plate being wider than a spacing between a side surface of the active section and the external electrode plate, and the electrically-conductive bonding material situated between the side surface of at least one of the inactive sections and the external electrode plate being larger in thickness than the electrically-conductive bonding material situated between the side surface of the active section and the external electrode plate.

Abstract: Provided with one or more first transistors of a first conductivity type each including a gate, a source, and a drain, the gate being connected to an input terminal, the source being configured to be connected to a first voltage source, the drain being connected to an output node, one or more second transistors of a second conductivity type each including a gate, a source, and a drain, the gate being connected to the input terminal, the source being configured to be connected to a second voltage source, the drain being connected to the output node, a first resistor that is inserted and connected between the input terminal and the output node, a first output terminal that is connected to the input terminal, and a second output terminal that is directly or indirectly connected to the output node.

Abstract: A plurality of circumferential fins 22g are formed on an outer peripheral surface of a motor casing 22a, and a plurality of fins 22f are formed on an outer surface of a motor rear cover 22d. Lubricant circulates in a motor-casing oil passage 55 provided in the motor casing 22a, a motor-rear-cover oil passage 56 provided in the motor rear cover 22d, and a speed reduction portion B. This lubricant is cooled when flowing in the motor-casing oil passage 55 and the motor-rear-cover oil passage 56. Thus, an in-wheel motor drive device 21 is efficiently cooled.

Abstract: A wheel driving device includes a speed reducer for transmitting rotation of an electric motor to a hub ring supporting a vehicle wheel after reducing its speed. The speed reducer is a cycloid speed reducer including an external gear, and an internal gear meshing with the external gear and rotationally fixed to the speed reducer casing through a rotational fixing arrangement which is also capable of elastically supporting the internal gear. The rotational fixing arrangement absorbs, by elastic deformation, vibration of the internal gear due to torque transmitted from the external gear to the internal gear, thereby preventing the vibration of the internal gear from being transmitted to the speed reducer casing.

Abstract: An in-wheel motor driving device in which a motor section A and a wheel hub bearing section C are connected coaxially in series via a speed reducer section B, whereby an axial dimension of the in-wheel motor driving device is reduced to provide a large inside space of a vehicle as well as an increase in freedom of routing a power supply wires. A terminal box for the power supply wires which supply power to the motor section A is disposed on the outer circumferential side surface of the housing which holds the motor section A. The power supply wires are routed out of the terminal box to an inboard side and are anchored by a power supply wire holder which extends perpendicularly to an axial centerline of the housing.

Abstract: A ceramic heater is constructed by embedding a heat-generator in a base body made of ceramics. The heat-generator has a recess in a surface thereof, the ceramics being inside the recess. Even if a great thermal stress is developed due to a difference in thermal expansion between the heat-generator and the base body, by the recess inside which the ceramics that forms the base body exists, occurrence of a gap between the heat-generator and the base body, as well as appearance of cracks in the base body, can be prevented even in the direction of the length of the heat-generator in which the thermal stress is applied heavily.

Abstract: An in-wheel motor drive assembly includes a motor case defining a motor chamber and a reduction mechanism chamber provided on one side of and isolated from the motor chamber by a partition wall. An electric motor is mounted in the motor chamber. A planetary gear reduction mechanism is mounted in the reduction mechanism chamber, and reduces the rotation of the electric motor and outputs the reduced rotation to a hub ring. The reduction mechanism is lubricated by lubricating oil stored in the reduction mechanism chamber. A tapered oil guide surface is formed at the center of the inner surface of the partition wall facing the reduction mechanism chamber. The oil guide surface guides lubricating oil splashed up by the rotating reduction mechanism and flowing down along the inner surface of the partition wall, onto the rotor shaft of the electric motor, thereby lubricating bearings mounted on the rotor shaft.

Abstract: This electric motor includes: a brushless motor (20); and a control device (50) that is coupled integrally to an end of a motor case (11) in an axial direction. The control device (50) includes: a bus bar unit main body (53) that has a base unit (54) with a plurality of bus bars wired thereinside and has a connector unit (58) provided integrally on the base unit (54) and led out to an outside of a housing (10); a motor drive unit (66) that drives the brushless motor (20); and a motor control unit (71) that controls the motor drive unit (66). The motor drive unit (66) is attached to a first main surface (51) of the base unit (54) while the motor control unit (71) is attached to a second main surface (52) of the base unit (54).

Abstract: An in wheel motor driving device which has a deceased axial dimension and includes aluminum alloy housings having a minimum wall thickness for reduced weight while retaining good assemblability. An in-wheel motor driving device includes: a motor section which has an output shaft; a wheel hub bearing section C; and a speed reducer section which connects the output shaft of the motor section and the wheel hub bearing section coaxially with each other. A housing outer circumferential portion of the motor section and a housing outer circumferential portion of the speed reducer section are integral with each other, being provided by one, outer circumferential member. An outboard-side end member is fixed to an outboard-side end of the outer circumferential member by means of bolts, and the wheel hub bearing section has its fixing ring fixed to the outboard-side end member.

Abstract: An object of the invention is to always maintain an outer pin holder and a housing in a speed reducer section at their predetermined positions, to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, etc., and to eliminate rattling noise caused by the housing and the outer pin holder. A casing immobilizing member which is fixed to an inner surface of a speed reducer section casing and a housing immobilizing member which is fixed to an outer surface of a speed reducer section housing are provided between the speed reducer section casing and the speed reducer section housing. The casing immobilizing member and the housing immobilizing member are bonded with each other via a rubber member.

Abstract: A gear shaft of an output gear in a speed reducer B of an in-wheel motor driving device is supported at its two ends with respect to a housing. The double-end supported gear shaft of the output gear is formed with a spline hole. The spline hole provides spline-connection with an output shaft of the wheel hub C. This structure makes the gear shaft less likely to come out of alignment even if the output gear comes under a bending moment. Therefore, even if an external force such as a lateral force from a tire causes the output shaft of the wheel hub C to develop a shaft deflection, the deformation/displacement is absorbed by a gap between splines which connect the output shaft of the wheel hub C and the output gear with each other.

Abstract: This air-cooled type in-wheel motor drive assembly 21 includes a lubrication oil circuit for lubricating a speed reduction unit B by allowing lubrication oil discharged from a lubrication oil pump 51 to flow through interconnected oil passages 54, 55, 56 provided to a casing 22, motor-rotary-shaft oil passage 57, speed-reduction-unit input-shaft oil passage 58 and interior of the speed reduction unit B, and for cooling a motor unit A and the speed reduction unit B with the lubrication oil cooled with the aid of outer fins 22f while flowing through the oil passages 54, 55, 56 provided to the casing.