Abstract: A one-way clutch therein which comprises an inner diameter side member fixed to an end of a rotary shaft, an outer diameter side member disposed around the inner diameter side member, a one-way clutch disposed between a middle part in the axial direction on the outer peripheral surface of the inner diameter side member and a middle part in the axial direction on the inner peripheral surface of the outer diameter side member, and a pair of support bearings disposed between the outer peripheral surface of the inner diameter side member and the inner peripheral surface of the outer diameter side member at a position to pinch this one-way clutch from the both sides thereof in the axial direction for allowing a relative rotation between the inner diameter side member and the outer diameter side member while supporting a radial load applied on this outer diameter side member.

Abstract: A belt transmission apparatus is capable of changing a set tension of an automatic belt tensioner 30 between a first optimal value suitable for engine starting and a second optimal value suitable for driving an accessory after an engine 1 has been started. The belt transmission apparatus includes a rotating electric machine pulley 8 of a rotating electric machine for transmitting starting power to the engine 1; an engine pulley 2 for transmitting the starting power to the engine 1 and also transmitting a rotation power of the engine 1 to accessories; auxiliary pulleys 3, 4, 5 being driven to rotate by the power from the engine pulley 2 thereby to drive the accessories, respectively; a belt 10 wrapped around the rotating electric machine pulley 8, the engine pulley 2 and the auxiliary pulleys 3, 4, 5 in succession; and a belt tension adjuster 9, 30 for urging the belt 10 so as to set a tension of the belt 10 in a plurality of stages.

Abstract: A variable resistor is constructed to reliably seal the space between a rotor and a substrate without insert-molding the substrate into a case, and to be produced at a very low cost. This variable resistor includes a hollow square-prism shaped case which is open at the top and the bottom, a substrate which is fitted into the lower opening of the case, and on the top surface of which a collector electrode and an arcuate resistor are provided, a rotor rotatably fitted into the upper opening of the case, a slider mounted on the bottom surface of the rotor and making sliding contact with the collector electrode and the resistor, an annular packing member disposed between the rotor and the substrate for sealing the space therebetween, terminals mounted on the substrate and electrically connected to the resistor and the collector electrode, and a metallic cover.

Abstract: In a process of assembling a rotating machine, a sun gear 26 which is fixed to an end portion of a rotor shaft 3, and which meshes with a planet gear 31 is configured integrally with a one-way clutch 18 which is disposed inside a carrier 34, and which transmits a rotating force from a pulley 17 to the rotor shaft 3 via the sun gear 26.

Abstract: A one-way clutch therein which comprises an inner diameter side member fixed to an end of a rotary shaft, an outer diameter side member in a cylindrical form disposed around the inner diameter side member to be concentric with the inner diameter side member, a one-way clutch disposed between a middle part in the axial direction on the outer peripheral surface of the inner diameter side member and a middle part in the axial direction on the inner peripheral surface of the outer diameter side member for transmitting rotation between the outer diameter side member and the inner diameter side member only when the outer diameter side member has a tendency to relatively rotate in a predetermined direction with respect to the inner diameter side member, and a pair of support bearings disposed between the outer peripheral surface of the inner diameter side member and the inner peripheral surface of the outer diameter side member at a position to pinch this one-way clutch from the both sides thereof in the axial direc

Abstract: A variable resistor is constructed to reliably seal the space between a rotor and a substrate without insert-molding the substrate into a case, and to be produced at a very low cost. This variable resistor includes a hollow square-prism shaped case which is open at the top and the bottom, a substrate which is fitted into the lower opening of the case, and on the top surface of which a collector electrode and an arcuate resistor are provided, a rotor rotatably fitted into the upper opening of the case, a slider mounted on the bottom surface of the rotor and making sliding contact with the collector electrode and the resistor, an annular packing member disposed between the rotor and the substrate for sealing the space therebetween, terminals mounted on the substrate and electrically connected to the resistor and the collector electrode, and a metallic cover.

Abstract: A method of making a rotor of an inductor type alternating current generator formed by connecting opposedly and alternately disposed first and second claws 3a, 3b of first and second inductors excited by an excitation coil 8 in different polarities through a nonmagnetic ring 3c. Contacting portions 22, 23 of the first and second claws and the nonmagnetic ring are connected by a welding means from inner sides of the claws and in a direction inclined to an axial direction by a predetermined angle.

Abstract: A power generation apparatus for an electric hybrid automobile. Two a.c. generators 21, 22 which have different rotation speeds at the initiation of power generation and which provide high efficiency at or near the different rotation speeds are driven by an internal combustion engine 1 via a belt 23. An a.c. power is supplied to a rectifier 4, and the power is used as a power source for an induction motor 7 and a battery 5.

Abstract: An AC generator for use in motor vehicles which is high in power generation and cooling efficiency. The magnetic circuit is so constructed that its number of slots per each pole and each phase is 0.5 and that its winding system is of concentrated winding. With such a construction, the total length of its stator coils can be reduced compared with that of the conventional machine. In addition, its output and efficiency are improved by the reduced temperature rise and a reduction in its structure and cost can be achieved by the reduced consumption of copper.

Abstract: A vehicular AC generator comprising a stator supported by a front bracket and a rear bracket; a rotor fixed to a rotating shaft supported by the front bracket and the rear bracket through bearings, provided with magnetic pole cores wherein a plurality of pairs of magnetic poles are formed in the circumferential direction, retaining an excitation coil; a pair of fans provided at a front end and a rear end of the magnetic pole cores; a plurality of inlet openings provided at end faces of the front bracket and the rear bracket; a plurality of outlet openings provided at peripheral portions of the front bracket and the rear bracket; and fans for cooling inside of the vehicular AC generator by circulating air therein by rotation of the rotor; wherein the fans each is fixed with a side plate at ends of blades thereof and at least in a front side fan of the both fans, a difference between an inner radius of the side plate and an inner radius of the inlet opening of the corresponding front bracket is larger than a wi

Abstract: A rotor for an AC generator includes first and second iron cores which function as magnetic poles for the rotor and which are fixed to a shaft. A plurality of magnetic teeth project from the circumference of each iron core at a position where the iron cores contact each other to form troughs between the magnetic teeth. Each trough between the magnetic teeth is V-shaped, so that the weight of the rotor is reduced. Furthermore, each iron core has a ring recess portion at an outer end surface of the iron core and around the axis thereof.

Abstract: A vehicular AC generator comprises a stator connected to a front bracket and a rear bracket, a rotor fixedly mounted on a rotational shaft rotatably supported by both the brackets, and a front fan and a rear fan each serving for cooling the generator. A plurality of air intake holes are formed around the inner circumstance of each bracket, while a plurality of air outlet holes are formed around the outer circumstance of the same. As the rotor is rotated, cooling air is introduced into the generator through the air intake holes and then exhausted to the outside through the air outlet holes while cooling the interior of the generator. The number of blades on each fan is set to a certain odd numeral, and moreover, the number of blades on the front fan is different from that of the rear fan. The number of blades on each fan may be set to an odd numeral which is not a multiple of numeral of three.

Abstract: Crystalline palladium tetrakis (triphenylphosphine) which exhibits a specific powder X-ray pattern and is excellent in storage stability is obtained by allowing palladium chloride to react with triphenylphosphine in aprotic polar solvents, treating the reaction mixture with an aqueous hydrazine solution, collecting the resulting crystals by filtration, washing with alcohols and further washing with hydrocarbon solvents.

Abstract: A vehicle's AC generator is provided with a rotor magnetic pole core assembly fixedly mounted on a rotary shaft and excited through an exciting coil, stator-coil-mounted stator cores surrounding the magnetic pole core assembly, first and second brackets supporting the stator cores and rotatably supporting the rotary shaft through bearings, a pair of fans provided on both ends of the rotor magnetic pole core assembly, to allow cooling air to flow in the space defined by the first and second brackets, a rectifier, and a voltage regulator. In addition, a cooling solution circulating structure, made of a material high in thermal conductivity, is provided on the side of one of the first and second brackets. The cooling solution circulating structure, which has an upper frame and a lower frame, has a flow path inside to which a cooling solution is supplied from outside.

Abstract: An alternating current generator with a pulley (17) for transmitting driving force from an engine to a rotor and/or to an auxiliary machine, having an external axial fan (18), rotating unitedly with the pulley (17), for drawing external air into the inside of the AC generator through air intake holes provided on both covers of the AC generator housing. The pulley (17) has air-intake vents (17a) axially extending through the pulley to permit relatively cold air to pass therethrough. At each such vent (17a), a guide member (17b) between the blades of the external axial fan (18) and the air intake holes directs the relatively cold air drawn in by the axial fan, to cool the interior components of the AC generator. The guide members (17b) further serve to shut out the outside air that has been heated from having passed near the outer surface of the housing.

Abstract: A vehicle AC generator control device, comprises: an AC generator with a field coil; a rectifier for rectifying an AC output of the AC generator; a battery connected to an output terminal of the rectifier; a voltage regulator with a switching element series-connected to the field coil, the voltage regulator detecting a terminal voltage of the rectifier or battery to operate the switching element to control a field current of the field coil to adjust an output voltage of the AC generator to a predetermined value; a field coil exciting power source for providing an output voltage which is higher than the output voltage of the AC generator; and a field current limiter for limiting a maximum conduction rate of the switching element according to a speed of rotation of the AC generator.

Abstract: A vehicular AC generator comprising a magnetic pole core secured to a shaft and excited by an excitation coil, the magnetic pole core having opposite end faces, a stationary core surrounding the magnetic pole core and having mounted thereon a stationary coil, and a front and a rear bracket supporting the stationary core and rotatably supporting the shaft through bearings. The front and rear brackets having ventilation openings defined therein, and a fan mounted to each of the opposite end faces of the magnetic pole core is provided for generating flows of cooling air through the ventilation openings in the front and rear brackets, An inlet opening side end portion of a blade of the fan that overlaps the inlet opening has a radially length dimension which is equal to or less than 50% of radial legnth dimension of the inlet opening side end portion.

Abstract: A vehicular a.c. generator comprising a housing having a cooling surface, a rotor rotatably supported within the housing, a stator with a coil end supported by the housing to have a clearance therebetween, and a thermally conductive filling material filled in the clearance for conducting heat from the stator coil end to the housing. The housing is provided with a filler passage communicating the clearance to the exterior of the housing for introducing therethrough the filling material into the clearance. Therefore, the filling material is injected through the filler passage into the clearance after the stator is assembled into the housing.

Abstract: An armature core 55 and field cores 53 of a vehicle starter/generator are directly mounted on the engine cylinder block, 57, and are cooled by the fluid circulating an coolant passageways 58-62 in the block. Heat pipes 76, 77 arranged on the armature core and/or the field cores may be inserted in the coolant passageways in the cylinder block, and a clutch 69 may be disposed between revolving-field poles 52 mounted on the engine crankshaft 50 and a transmission drive shaft 63.

Abstract: A control device for a vehicle a.c. generator comprises a rectifier connected to an armature coil of the a.c. generator, and having a main rectification output terminal for outputting the rectified output to a battery, and an auxiliary rectification terminal connected to one end of the field coil of the generator; a voltage regulator which turns on and off the field current by means of a switching element connected to the other end of the field coil to adjust the output voltage from the generator at a predetermined level; an overvoltage limiting unit including a switching element which conducts when the output voltage from the generator exceeds a predetermined overvoltage value; and a switching unit which is energized by the conduction of the switching element in the overvoltage limiting unit to ground the auxiliary rectification terminal of the rectifier.