Abstract: There is disclosed a windshield wiper device for wiping the window glass of an automotive vehicle. The windshield wiper includes: an arm head, a retainer, an arm spring, and a wiper blade. The arm head is adapted to be fixed to the wiper shaft of the vehicle so as to oscillate about an axis of oscillation. The retainer is pivotally connected to the arm head for movement about a pivot axis extending perpendicularly to the axis of oscillation. The arm spring is interposed between the arm head and the retainer member to urge the retainer member toward the window glass upon the fixation of the arm head to the wiper shaft. The arm piece is disposed perpendicularly to the pivot axis and is rotatably connected to the retainer member for movement about the longitudinal axis of the arm piece. The wiper blade is connected to the arm piece so as to be pressed against the window glass by the arm spring upon the fixation of the arm head to the wiper shaft.

Abstract: An alternating current generator includes a frame, a rotation shaft, a slip ring attached to the rotation shaft, a brush in contact with the slip ring, and a brush holder secured to the frame. The brush holder includes a brush-guiding portion and a cover portion. The brush-guiding portion of the brush holder has a hollow slidably receiving the brush for movement in a radial direction with respect to the rotation shaft. The cover portion of the brush holder encloses that portion of the rotation shaft whee the slip ring is attached so that the slip ring is protected from outside dust and splash. This cover portion is integrally formed with the brush-guiding portion in such a manner that neither a clearance nor a mating surface is produced between the cover portion and the brush-guiding portion.

Abstract: Disclosed is an electric motor system for automobiles having an electric motor and a control circuit for the motor, wherein the control circuit is attached to a part of a metallic housing of the motor system by means of a bonding agent and is embedded in resin material so as to maintain a favorable heat removal from the control circuit by virtue of a high heat conductivity and a heat radiation capability of the housing. Preferably, the housing accommodates a speed reduction unit which is connected to the output shaft of the motor and reduces its rotation speed. Favorable heat removal from the control circuit improves the reliability and the performance of the control circuit, and since the control circuit can be directly wired to the motor the number and the cross section of the electric wires which extend between various parts of the motor system can be reduced.

Abstract: A winding pattern for a motor rotor comprising an armature mounted on a rotary shaft and provided with a plurality of longitudinal slots defined a plurality of core teeth; a commutator mounted on the rotary shaft at a longitudinally spaced relationship to the armature and provided with circumferentially divided segments; and one or more sets of coils wound around the core teeth through the core slots. The very first starting lead of the set of coils comprises a first span which extends from a first commutator segment into a first core slot, a second span which extends out of the first core slot and is wrapped around the rotary shaft at a part opposite to the commutator with respect to the armature, a third span which is passed through a second core slot from the second span towards the commutator, a fourth span which extends out of the second core slot and is wrapped around a part of the rotary shaft intermediate between the armature and the commutator over a certain angle.

Abstract: The present invention discloses a starter for starting an internal combustion engine which comprises:(a) a starter motor having a starter shaft;(b) a pinion gear splined to the starter shaft so as to be slidable along the starter shaft for connection and disconnection of the starter motor to the engine;(c) a shifting motor having a shifting shaft;(d) a sliding means helical splined to the shifting shaft for a reciprocal movement along the shifting shaft according to a rotational movement of the shifting shaft; and(e) a shift arm for transmitting the reciprocal movement of the sliding means to the pinion gear so as to move the latter for connection and disconnection of the starter motor and the engine.

Abstract: A rectifier in an alternating current generator for automotive vehicles is disclosed, which comprises a pair of conductive radiators for positive and negative sides, each having embedded therein diode chips arranged in a juxtaposed fashion, an insulated substrate facing the radiators and equipped with a terminal board to be connected with each of lead wires from corresponding diode chips, and cooling fins provided on each of the raidators, and a cooling fan provided on a rotor core for cooling the rectifier, the rectifier being positioned in air course in which air for cooling the radiators is introduced into the inside of the generator from the outside of a case bracket of the generator through air intake ports by the action of cooling fan such that radiators are placed in the radial direction in parallel relation to each other in the air course so that the insulating substrate is placed downstream in the air course.

Abstract: A direct current motor includes a substantially cylindrical rotor core and a lead wire wound around the rotor core to form a rotor coil. The rotor core has a plurality of shallower and deeper slots circumferentially and alternately disposed in the peripheral face of the rotor core at angular intervals about the center axis of the rotor core so that each of the shallower and deeper slots extends axially from the front face to the rear face of the rotor core. Each of the shallower slots includes first outer and inner radially aligned sections, each receiving a portion of the lead wire. Each of the deeper slots includes: second outer and inner radially spaced sections, each receiving a portion of the lead wire; and a neck section interposed between the second outer and inner sections.

Abstract: A method of metering an air-gap in an electric rotating machine comprising a rotor core provided integrally on a rotary shaft and a stator core arranged coaxially with the rotor core around the outer periphery thereof is disclosed, which method comprises measuring the width of the stator core in the radial direction prior to assembling the stator core and the rotor core, also measuring the position of an outer periphery of the stator core from the axis of the rotor core after the assembling, calculating the position of an inner periphery of the stator core from the axis of the rotor core based on the difference between the result of measurement of the width of the stator core in the radial direction measured prior to the assembling and the result of measurement of the position of the outer periphery of the stator core from the axis of the rotor core after the assembling, and further calculating the difference between the position of the inner periphery of the stator core and the position of the outer peripher

Abstract: Disclosed is a pressure actuator such as a vacuum actuator comprising a valve unit including a plurality of solenoid valves and a diaphragm unit including a diaphragm defining a pressure chamber, air pressure within the pressure chamber being adjusted by selective activation of the solenoid valves which communicate the pressure chamber with pressure sources of different pressure levels, in which a casing of the actuator defines an accommodating chamber for accommodating the solenoid valve unit and a wall surface of the chamber is provided with ribs for guiding and positioning the solenoid valve unit inside the chamber. The ribs may be adapted to make a sliding contact with a side surface of the yokes of the solenoid valves and a smooth surface a printed circuit board which is attached to the solenoid valve unit. Alternatively or additionally, the ribs may be adapted to be fitted into a gap between a pair of adjacent yokes of the solenoid valves.

Abstract: Disclosed is an air filter unit for a pressure actuator such as a vacuum actuator for a speed control of an automobile comprising a solenoid valve unit including a plurality of solenoid valves and a diaphragm unit including a diaphragm defining a pressure chamber, air pressure within the pressure chamber being adjusted by selective activation of the solenoid valves which communicate the pressure chamber with pressure sources of different pressure levels. A filter element holder defining a pair of receptacles for receiving filter elements therein is attached to the solenoid valve unit so as to intercept air flow from an external air source into the vacuum chamber by way of the solenoid valves. The filter element for a vent valve which is frequently used is finer in structure than that for a safety valve which is less frequently used and is required to be capable of rapid introduction of air into the vacuum chamber.

Abstract: The present invention relates to a commutator which is always exposed to gasoline in a motor to drive, for example, a fuel pump of an automobile or the like and the method of efficiently producing the commutator. A good conductive sheet, the wear of which is not promoted by oxidized gasoline, is fixed to the surface of each commutator segment made of copper or copper alloy at least at the part to contact a brush.

Abstract: A motor-immersed fuel pump for a fuel supplying system of vehicles such as an automobile wherein the motor for driving the pump is completely immersed in the flow of fuel for cooling, thereby attaining an extended service life. At least that part of the brush lead which is exposed to fuel of such a motor-immersed fuel pump is composed of a material which is non-reactive with the fuel.

Abstract: The present invention relates to a commutator which is always exposed to gasoline in a motor to drive, for example, a fuel pump of an automobile or the like and the method of efficiently producing the commutator. A good conductive sheet, the wear of which is not promoted by oxidized gasoline, is fixed to the surface of each commutator segment made of copper or copper alloy at least at the part to contact a brush.