Abstract: A rotary reciprocating drive actuator includes an assembled magnetic member has a rectangular shape surrounding the movable member in a plane orthogonal to the axis direction, the core extends in the X direction along one edge of the rectangular shape, and the pair of core parts respectively extend in the Y direction along a pair of opposing edges of the rectangular shape that are different from the one edge, the assembled magnetic member including the pair of magnetic poles, the pair of core parts around which the pair of coils are respectively wound, and the core at which the rotation angle position holding part is disposed, and winding axes of the pair of coils extend along the Y direction.

Abstract: A movable magnet is configured by alternately magnetizing an even number of magnetic poles at an outer periphery of a shaft part; a number of core magnetic poles as magnetic poles of a core body and a number of magnetic poles of the movable magnet are equal to each other; the core magnetic poles are disposed to face the movable magnet with an air gap therebetween on an outer peripheral side of the movable magnet in a direction orthogonal to the shaft part; a drive unit is provided with a magnet position holding part provided to face the movable magnet and magnetically attracts the movable magnet to a reference position; the core body is formed to surround an even number of the core magnetic poles; and a coil body is disposed at the core body adjacent to each of the even number of the core magnetic poles.

Abstract: A wind speed prediction device includes processing circuitry configured to acquire a scattering signal that is each of a plurality of beams after being emitted to space and scattered in the space; variably set a range bin width as distance resolution of each of the acquired scattering signals in accordance with an elevation angle of each of the beams emitted to the space, and calculate at least one Doppler frequency of at least one range bin corresponding to a two-dimensional plane including an observation region from the each of the scattering signals; estimate at least one wind speed distribution in the two-dimensional plane from the plurality of Doppler frequencies calculated; and predict a wind speed in the observation region from the at least one wind speed distribution in the two-dimensional plane using a two-dimensional Navier-Stokes equation.

Abstract: A measuring device for measuring an inspection target on the basis of vibration generated when the inspection target has been irradiated with laser light includes a condensing position deriving portion configured to derive an amount of adjustment of a distance between condensing lenses of a laser condensing unit configured to condense the laser light on the basis of a distance between a laser device configured to radiate the laser light and an irradiation location of the laser light and a communicating portion configured to transmit control information including information representing the amount of adjustment to the laser condensing unit.

Abstract: A balancer apparatus equipped with an oil pump includes a pump housing including a pump containing chamber provided therein, a pump forming member contained in the pump containing chamber and configured to discharge oil introduced from an intake portion from a discharge portion to an oil passage of the internal combustion engine when a rotational force is transmitted thereto, a control oil chamber provided between the pump containing chamber and the pump forming member in a radial direction with respect to a rotational axis of the pump forming member and configured to change a hydraulic pressure of the oil to be discharged from the pump forming member with the aid of the oil introduced therein after being discharged from the discharge portion, passing through an oil passage of the internal combustion engine, and being subjected to a pressure adjustment, and a balancer housing including a bearing retainer portion configured to transmit the rotational force from the internal combustion engine to the pump formin

Abstract: A balancer apparatus equipped with an oil pump includes a pump housing including a pump containing chamber provided therein, a pump forming member contained in the pump containing chamber and configured to discharge oil introduced from an intake portion from a discharge portion to an oil passage of the internal combustion engine when a rotational force is transmitted thereto, a control oil chamber provided between the pump containing chamber and the pump forming member in a radial direction with respect to a rotational axis of the pump forming member and configured to change a hydraulic pressure of the oil to be discharged from the pump forming member with the aid of the oil introduced therein after being discharged from the discharge portion, passing through an oil passage of the internal combustion engine, and being subjected to a pressure adjustment, and a balancer housing including a bearing retainer portion configured to transmit the rotational force from the internal combustion engine to the pump formin

Abstract: A gear configured to rotate as a unit with a shaft, the gear includes: a plurality of annular grooves formed on both side surfaces of the gear in a direction of a rotation axis of the shaft, at least partially overlapped when viewed from the direction of the rotation axis, and at least partially overlapped in a radial direction with respect to the rotation axis.

Abstract: Balancer device has upper and lower housings 3 and 4 having therein an accommodation section 10, a pair of drive and driven side shafts 5 and 6 which are rotatably supported by four plain bearings 11 to 14 provided in the accommodation section and to which a rotation force is transmitted from a crankshaft, and arc band-shaped thrust receiving portions 32a and 33a which thrust flange portions of drive and driven gears 8 and 9 provided at the drive and driven side shafts respectively can contact from a thrust direction. First and second oil storing grooves 34 and 35, groove passages 36 and 37 and vertical groove passages 38a to 39b are formed at the thrust receiving portions on a gravity direction lower side with respect to a meshing portion of the both gears. With this configuration, it is possible to suppress occurrence of abrasion of the thrust receiving portion.

Abstract: There is provided a balancer device for an internal combustion engine that suppresses lubricating oil from failing onto a reduction gear and a pump drive gear provided to drive and rotate an oil pump and thereby suppresses an increase in resistance against rotation between the reduction gear and the pump drive gear. The balancer device for the internal combustion engine includes a lower side housing on which a balancer drive gear, a first balancer shaft including a first balance weight, a first gear, a second gear, a second balancer shaft including a second balance weight, and the reduction gear are mounted.

Abstract: Balancer shaft 5 and 6 rotatably set through bearings 11˜14 and an oil pump 2 driven by power from the balancer shaft 5 and 6 are provided in a balancer housing. Oil discharged from an outlet portion 42 of the oil pump 2 is supplied to a main oil gallery 10 through an outlet passage 48. A bearing filter 55 that filters a part of the oil is provided in the outlet passage 48 that extends from the outlet portion 42. A communication passage 50 that branches off from the outlet passage 48 and communicates with the bearings 11˜14 supplies a part of the oil having been filtered by the bearing filter 55 to the bearings 11˜14. By filtering the oil that is going to be supplied to the bearing portion, decrease in durability of the bearing portion can be suppressed.

Abstract: Balancer device has upper and lower housings 3 and 4 having therein an accommodation section 10, a pair of drive and driven side shafts 5 and 6 which are rotatably supported by four plain bearings 11 to 14 provided in the accommodation section and to which a rotation force is transmitted from a crankshaft, and arc band-shaped thrust receiving portions 32a and 33a which thrust flange portions of drive and driven gears 8 and 9 provided at the drive and driven side shafts respectively can contact from a thrust direction. First and second oil storing grooves 34 and 35, groove passages 36 and 37 and vertical groove passages 38a to 39b are formed at the thrust receiving portions on a gravity direction lower side with respect to a meshing portion of the both gears. With this configuration, it is possible to suppress occurrence of abrasion of the thrust receiving portion.

Abstract: There is provided a balancer device for an internal combustion engine that suppresses lubricating oil from failing onto a reduction gear and a pump drive gear provided to drive and rotate an oil pump and thereby suppresses an increase in resistance against rotation between the reduction gear and the pump drive gear. The balancer device for the internal combustion engine includes a lower side housing on which a balancer drive gear, a first balancer shaft including a first balance weight, a first gear, a second gear, a second balancer shaft including a second balance weight, and the reduction gear are mounted.

Abstract: An object of the present invention is to provide a balancer apparatus for an internal combustion engine that can improve design flexibility in the internal combustion engine. The balancer apparatus includes left and right balancer shafts 21L and 21R each including a balancer weight 21a and a rear-side shaft portion 19b and a front-side shaft portion 19a provided on both sides of the weight portion 21a in a rotational axis direction, a rear-side housing 22R including a bearing holding portion 22Rd surrounding an outer periphery of the rear-side shaft portion 19b and rotatably supporting the rear-side shaft portion 19b, and a front-side housing 22F including a bearing holding portion 22Fd rotatably supporting the front-side shaft portion 19a.

Abstract: Balancer shaft 5 and 6 rotatably set through bearings 11˜14 and an oil pump 2 driven by power from the balancer shaft 5 and 6 are provided in a balancer housing. Oil discharged from an outlet portion 42 of the oil pump 2 is supplied to a main oil gallery 10 through an outlet passage 48. A bearing filter 55 that filters a part of the oil is provided in the outlet passage 48 that extends from the outlet portion 42. A communication passage 50 that branches off from the outlet passage 48 and communicates with the bearings 11˜14 supplies a part of the oil having been filtered by the bearing filter 55 to the bearings 11˜14. By filtering the oil that is going to be supplied to the bearing portion, decrease in durability of the bearing portion can be suppressed.

Abstract: An object of the present invention is to provide a balancer apparatus for an internal combustion engine that can improve design flexibility in the internal combustion engine. The balancer apparatus includes left and right balancer shafts 21L and 21R each including a balancer weight 21a and a rear-side shaft portion 19b and a front-side shaft portion 19a provided on both sides of the weight portion 21a in a rotational axis direction, a rear-side housing 22R including a bearing holding portion 22Rd surrounding an outer periphery of the rear-side shaft portion 19b and rotatably supporting the rear-side shaft portion 19b, and a front-side housing 22F including a bearing holding portion 22Fd rotatably supporting the front-side shaft portion 19a.

Abstract: A balancer device for an internal combustion engine includes upper and lower housings made of aluminum alloy. The upper housing includes a leg part fixed to the engine. The lower housing is coupled to the upper housing by tightening bolts. A pair of balancer shafts are rotatably supported by the upper and lower housings. A positioning pin is disposed at a distal end portion of the leg part for positioning the upper housing with respect to the engine by positional correspondence to a positioning hole of the engine when the tightening bolts are tightened. The leg part is inclined outwardly with respect to a body of the upper housing such that a distal end of the positioning pin is located outside of a proximal end of the leg part with respect to the body of the upper housing when the tightening bolts are loosened.

Abstract: A balancer device of an internal combustion engine, has a drive gear engaged with an input gear to which a rotation force is transmitted from a crankshaft; a balancer drive shaft to which the rotation force is transmitted from the drive gear and which has a balancer weight; a balancer drive gear rotating integrally with the balancer drive shaft; a balancer driven gear engaged with the balancer drive gear; and a balancer driven shaft rotating integrally with the balancer driven gear and having a balancer weight. At least one of the drive gear, the balancer drive gear and the balancer driven gear is provided, on both axial direction side surfaces thereof, with ring-shaped grooves whose diameters are different from each other. The ring-shaped grooves are formed up to a depth from the surface of the gear at which both the ring-shaped grooves overlap each other in the axial direction.

Abstract: A balancer device for an internal combustion engine includes upper and lower housings made of aluminum alloy. The upper housing includes a leg part fixed to the engine. The lower housing is coupled to the upper housing by tightening bolts. A pair of balancer shafts are rotatably supported by the upper and lower housings. A positioning pin is disposed at a distal end portion of the leg part for positioning the upper housing with respect to the engine by positional correspondence to a positioning hole of the engine when the tightening bolts are tightened. The leg part is inclined outwardly with respect to a body of the upper housing such that a distal end of the positioning pin is located outside of a proximal end of the leg part with respect to the body of the upper housing when the tightening bolts are loosened.

Abstract: A balancer device of an internal combustion engine, has a drive gear engaged with an input gear to which a rotation force is transmitted from a crankshaft; a balancer drive shaft to which the rotation force is transmitted from the drive gear and which has a balancer weight; a balancer drive gear rotating integrally with the balancer drive shaft; a balancer driven gear engaged with the balancer drive gear; and a balancer driven shaft rotating integrally with the balancer driven gear and having a balancer weight. At least one of the drive gear, the balancer drive gear and the balancer driven gear is provided, on both axial direction side surfaces thereof, with ring-shaped grooves whose diameters are different from each other. The ring-shaped grooves are formed up to a depth from the surface of the gear at which both the ring-shaped grooves overlap each other in the axial direction.

Abstract: There is disclosed a method for producing an N-alkyl-.alpha.-dialkylaminoacetohydroxamic acid compound represented by formula (2), which comprises reacting an .alpha.-dialkylaminoacetic acid ester compound represented by formula (1) with an N-alkylhydroxylamine, wherein the reaction is carried out in water and an ether-series organic solvent, ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which are the same or different, each represents an alkyl group. According to the method, it is possible to obtain the objective compound in a high yield with a short reaction time, with restrained formation of a by-product.