Abstract: A rotation detecting apparatus including a drive gear rotatably supported by a case and capable of rotating cooperatively with an object to be detected, driven gears and rotatably supported by the case and brought in mesh with the drive gear, magnets provided at rotational center portions of the driven gears and having plane portions formed with N poles and S poles, a circuit board arranged at the case and capable of being connected to outside, magnetic reluctance elements attached to the circuit board and opposed to the plane portions of the magnets and an electronic circuit part for convertion output signals of the magnetic reluctance element into rotational angle signals, wherein the magnets of the driven gears are formed with the N poles and the S poles by magnetizing the magnets after having been subjected to insert molding by a resin.

Abstract: A rotation detecting apparatus including a drive gear rotatably supported by a case having a cover and capable of rotating cooperatively with an object to be detected, driven gears and brought in mesh with the drive gear and capable of rotating cooperatively therewith, magnets and provided at rotational center portions of the driven gears and having plane portions formed with N poles and S poles, a circuit board arranged at the case and capable of connecting to outside, magnetic reluctance elements attached to the circuit board and being opposed to the plane portions of the magnets and an electronic circuit part for converting an output signal of the magnetic reluctance element into a rotational angle signal, wherein the driven gears and are interposed by the case and the cover and a constant distance is maintained between the plane portion and the magnetic reluctance element.

Abstract: A rotation detecting apparatus including a drive gear rotatably supported by a case having a cover and capable of rotating cooperatively with an object to be detected, driven gears and brought in mesh with the drive gear and capable of rotating cooperatively therewith, magnets and provided at rotational center portions of the driven gears and having plane portions formed with N poles and S poles, a circuit board arranged at the case and capable of connecting to outside, magnetic reluctance elements attached to the circuit board and being opposed to the plane portions of the magnets and an electronic circuit part for converting an output signal of the magnetic reluctance element into a rotational angle signal, wherein the driven gears and are interposed by the case and the cover and a constant distance is maintained between the plane portion and the magnetic reluctance element.

Abstract: A rotation detecting apparatus 1 including a drive gear rotatably supported by a case and capable of rotating cooperatively with an object to be detected, driven gears and rotatably supported by the case and brought in mesh with the drive gear, magnets provided at rotational center portions of the driven gears and having plane portions formed with N poles and S poles, a circuit board arranged at the case and capable of being connected to outside, magnetic reluctance elements attached to the circuit board and opposed to the plane portions of the magnets and an electronic circuit part for converting output signals of the magnetic reluctance element into rotational angle signals, wherein the magnets of the driven gears are formed with the N poles and the S poles by magnetizing the magnets after having been subjected to insert molding by a resin.

Abstract: A lumbar support apparatus installed in a seat back of a vehicular seat has a panel which is movable in front-and-aft direction. A U-shaped spring member is connected at its bent middle portion to the panel and pivotably supported at its opposite ends to a bracket fixed to a seat back frame. A control mechanism for moving the panel in the front-and-aft direction is disposed between the spring member and a pipe frame of the seat back frame. The control mechanism is fixedly in contact with the pipe frame through a stopper member so as to transmit the force from the spring member to the seat back frame in the front-and-aft direction.

Abstract: There is disclosed an actuator with a clutch mechanism in which a shaft device for operating an external mechanism is formed with threads thereon so as to be engaged with or disengaged from threads at inner surfaces of a plurality of collet type chuck members. The collet type chuck members are fitted into a member having outer teeth thereon, a line of magnetic force of an electromagnetic solenoid selectively acts upon pull-wedge members outside the collet type chuck members, whereby the collet type chuck members are engaged with or disengaged from the threads of the shaft device, and in the engaged condition, the member having outer teeth thereon is driven to rotate by a driving device, whereby the shaft device inside the member having outer teeth thereon is caused to be moved back and forth in a linear movement.

Abstract: A compact stepping motor for an electronic clock which features high stability in the direction of the motor rotation and small electric power consumption is provided with a rotor and a stator that surrounds the rotor and includes portions having a recess formed therein and two pairs of projecting magnetic pole pieces positioned asymmetrically relative to the end of their respective recesses.