Abstract: A wiper control device is provided with a wiper motor rotatable in the forward and reverse directions and a motor control circuit comprising a first and a second relay connected with the wiper motor, a first drive circuit connected to the first relay and a first position detecting circuit in series, a second drive circuit connected to the second relay and a second position detecting circuit in series, a first turning time delaying circuit connected with the second drive circuit in series, and a second turning time delaying circuit connected with the first drive circuit in series.

Abstract: An automatic constant-speed cruising control apparatus for a vehicle comprises a vehicle speed sensor for sensing a present vehicle speed; a command switch group; a controller including a memory for storing an desired cruising speed, a calculator for generating an actuator drive signal in response to the difference between the desired cruising speed and the present vehicle speed, a cancel controller, a resume controller, a transition controller, integration means for integrating duration time of the actuator drive signal during constant acceleration control by the resume controller, and decision means for detecting the present vehicle speed to approach the desired cruising speed; and an actuator for driving a throttle valve according to the actuator drive signal. The transition controller drives drastically in the closing direction of the throttle valve for the time calculated depending on the integral time obtained by the integration means when the present vehicle speed approaches the desired cruising speed.

Abstract: A wiper control device includes a wiper switch having a variable resistor which is switched to the respective resistance value corresponding to the respective operation mode of the wiper apparatus. An interface circuit is provided with a reference resistor and a capacitor. A microcomputer is provided with a reference charging port for changing the capacitor through the reference resistor, a detective charging port for changing the same capacitor through the variable resistor switched into various resistance values corresponding to the respective operation modes and a reading port for reading as to whether the capacitor is changed up to a predetermined potential level. The microcomputer determines the selected operation mode on the basis of a relative value calculated from the time required for charging the capacitor through the reference resistor by the reference charging port and the time required for charging the capacitor through the variable resistor of the wiper switch by the detective charging port.

Abstract: A sunroof control circuit for controlling a sunroof lid in a sliding and a tilting mode, which comprises an electric motor, a first and a second motor driving circuit for driving the electric motor in the forward and reverse direction, a position detecting switch provided with a contactor, and an arc-shaped first and a second contact plate disposed on a circle with the same radius, a switch means for generating signals to actuate the sunroof lid in respective directions, a first, a second and a third prohibition circuit for prohibiting or permitting signals to be supplied to the respective motor driving circuits in accordance with the position of the sunroof lid detected through the position detecting switch, and a motor-lock detecting circuit for detecting the motor to be locked and stopping current supply to the motor according to the detection of the motor locking.

Abstract: A geared electric motor 1 used for power window apparatuses, for example, which is provided with an mature 7 having an armature shaft 7a, an output shaft 8 connected with the armature shaft 7a through a worm gear pair (7a7 and 17) and two friction plates 9 and 10 to be in contact with both end faces of the armature shaft 7a. The armature shaft 7a of this motor 1 is prevented from rotation by frictional resistance generating between the friction plates 9, 10 and the armature shaft 7a even if the output shaft 8 is applied with rotatory force.

Abstract: An automatic vehicle speed controlling apparatus for a vehicle includes a vehicle speed sensor for sensing the actual speed of the vehicle and providing actual speed data proportional to the actual speed of the vehicle, a command switch operable for generating a cruise command signal and an actuator for driving a throttle valve with the vehicle. The control unit is responsive to the actual speed data and the cruise command signal and includes storage memory for storing a desired speed datum in response to the cruise command signal. The control unit selectively generates a speed increasing signal and a speed decreasing signal in response to a difference between the actual speed data and the desired speed datum stored in the memory and supplying the speed increasing signal and the speed decreasing signal to the actuator.

Abstract: An electric motor is provided with especially brushes of which rear ends are cut diagonally to form acute angles at the corner edges on the backward side of the rotating direction of the armature. The brushes are maintained securely in brush holders without vibration by first and second side walls of the brush holders according to component force of pressing force applied on the slant rear ends of the brushes by pressing members, therefore the objectionable noise caused by the "stick-slip" is prevented very effectively without introducing complicated structure in the motor.

Abstract: An electric motor, which is housed with a pulse signal generator for generating a pulse signal according to rotation of an output shaft and the pulse signal generator is composed of a plate provided with a conductor plate having a plurality of conductive parts disposed annularly with predetermined spaces and a contactor to be a contacted slidingly with the conductive parts of the conductor plate.

Abstract: An electric motor is provided with a breather, which is made of elastic material such as rubber and provided with three triangular tongues protruding in the longitudinal direction of a tubular shaped breather body around about an aperture opening in the outside air. According to this invention, formation of waterdrops and membranous water is hindered in the aperture of the breather, and water penetration into the electric motor is prevented effectively.

Abstract: The window glass of the power window apparatus is controlled so as to be returned in the opening direction as much as a predetermined distance of, for example, 2 mm or so when the closing operation of the window switch is discontinued while the window glass is moving toward the full-closed position in a turning area predetermined within the movable range of the window glass excepting the full-closed position of the window glass.

Abstract: Coupling structure between a door lock and a door lock-actuator includes a pair of projecting arms disposed to an output shaft of the door lock-actuator and protruding radially, and two swing arms provided to a lock lever of the door lock and contacting with the respective projecting arms of the output shaft of the door lock-actuator. According to the coupling structure, the door lock-actuator can be coupled with the door lock without adjusting the positions of the output shaft and the lock lever with each other in advance and the work efficiency is improved for the installation.

Abstract: A self-holding circuit is provided with an input terminal (2), an output terminal (3), a self returnable push switch (SW2), a first transistor TR1), a first time constant circuit (R3 and C1) having a predetermined charging time constant (T1), a second transistor (TR2), a relay (RL), first and second diodes (D1, D2), a second time constant circuit (R8, R9 and C2) having a predetermined discharging constant (T2), and a third transistor (TR3). The circuit may be switched on by a first pushing operation of the push switch and switched off by a second pushing operation of the same push switch.

Abstract: An electric motor is provided with an armature, an output shaft rotatable according to the rotation of the amature through a worm gear pair, and a rotation detectiong mechanism which comprises a rotary magnet rotatable together with the output shaft through an intervenient member and a reed switch for detecting rotation of the output shaft according to alterarion of the magnetic force caused by the rotation of the rotary magnet, and the intervenient member is fixed to the output shaft so as to form a predetermined play between the output shaft and the rotary magnet and transmit the rotation of the output shaft to the rotary magnet through the play.

Abstract: A vehicle speed control method and apparatus are provided which can ensure a smooth driving feeling even if an automotive vehicle has entered into an ascending sloped road during a constant speed control. The speed increasing control is stopped when the vehicle speed data obtained from the vehicle speed sensor is not greater than the memory vehicle speed, a deviation between the vehicle speed data and the memory vehicle speed is greater than a predetermined level and the acceleration at that time is greater than a predetermined level.

Abstract: A small-sized electric motor includes a yoke formed by bending a rectangular metallic plate into an oval shaped tube having a pair of flat parts and a pair of arcuate parts and joining opposite ends of the metallic plate. An end cap is secured on one end of the yoke and a gear casing is secured to the yoke by a tab formed on another end of the yoke. The joining faces of the metallic plate are located away from the center line of an arcuate part of the yoke and jagged faces are formed on the joining faces. The jagged faces are composed only of curved parts and straight parts having inclinations to the axis of the yoke. The end cap is secured by crimping a bendable tab formed on one end of the yoke by burring. A tab for securing the yoke to a gear box is formed by bending a tongue provided on the metallic plate together with notches on both sides of the tongue.

Abstract: A power window apparatus is controlled by comparing present rotational frequency of a motor with a reference value selected depending on a present position of a window glass among plural reference values predetermined at every position of the window glass, supplying an electric current to the motor in the closing direction of a window when the present rotational frequency of the motor is larger than selected reference value, supplying the electric current to the motor in the opening direction of the window when the present rotational frequency is not larger than the selected reference value and the window glass does not arrive in a full-closed position, and cutting the current supply to the motor when the present rotational frequency is not larger than the selected reference value and the window glass arrives in the full-closed position.

Abstract: A door lock actuator device comprises a casing having a common mount for securing the casing to either one of right-handed door and left-handed door of an automotive vehicle. A cover element closes a side opening of the casing, and a motor is accommodated within the casing. A motion conversion means has input shaft connected to the motor, and serves to convert a rotary output motion of the motor into a rocking motion. The output shaft of the device has opposite end regions extending through, and protruding outwardly from the casing and the cover element, respectively, and a swing arm is connected to either one of the end regions of the output shaft. Standardized components are used to realize actuator device for right-handed doors and left-handed doors, to lower the manufacturing cost of the device and simplify the parts stock control.

Abstract: An electromagnetic relay with a resistor is manufactured through the process comprising the steps of assembling an actuating part of the relay having a coil, contacts, terminals, an armature, a core and the like, setting the resistor on a base having slots to receive the terminals, and mounting the actuating part of the relay on the base by inserting the terminals into the slots of the base. The resistor is connected to coil terminals connected with the coil by fitting lead wires of the resistor into slits formed in the respective coil terminals so as to open in the inserting direction of the terminals at the same time of mounting the actuating part of the relay.

Abstract: A drive positioning apparatus which comprises at least one motor for driving a seat or a steering wheel shaft, a preset memory for memorizing operating data of the motor, a memory drive circuit for actuating the motor automatically according to the memorized data, a manual switch for actuating the motor manually, an ignition switch provided with a KEY contact, an IGN contact and an ACC contact for supplying electric power to electrical equipment which is so structured as to change to its OFF-state interlockingly by an ON-operation of a ST contact used for actuating an engine starter motor, and a control mechanism for prohibiting the automatic actuation of the motor in a case where predetermined time elapses after the ACC contact changes to the OFF-state from its ON-state while the motor is being actuated automatically.

Abstract: An actuator (1) of a diaphragm type which comprises an actuator case (2,3), a diaphragm (5) housed in the actuator case, a diaphragm plate (4) attached to the diaphragm for moving together with the diaphragm according to introduction of negative or atmospheric pressure into a negative pressure chamber (7) formed between the diaphragm and the actuator case (2) so as to actuate a device connected to the diaphragm plate. The diaphragm is formed with one or both of an annular rib (5e) having a thick-walled section and an annular expansive portion (5d) having a curved section. Therefore, the diaphragm is hard to be disengaged from the diaphragm plate even if an immoderate force is applied on the diaphragm.