Abstract: A rotation angle detecting device includes a rotating magnet and a sensor configured to detect a rotation angle based on the change in direction of a magnetic flux line generated from the magnet. The magnet includes a first magnetic body and a second magnetic body, which are symmetric about a plane along an axis of rotation. Each of the magnetic bodies has an N pole and an S pole magnetized in the direction of the axis of rotation X. The magnetic poles of rotating surfaces of the magnetic bodies that face the sensor are different. As a result, the length of the magnetic flux line that passes through the sensor is reduced, thereby suppressing a reduction in magnetic field strength and suppressing errors in the angle of the magnetic flux line resulting from an external disturbance magnetic field.

Abstract: A valve device that includes a valve body; a valve shaft configured to rotate the valve body; a coil spring being electrically conductive and configured to be twisted with rotation of the valve body and the valve shaft; a first conductive member being electrically conductive and facing an inner circumferential surface or an outer circumferential surface of the coil spring in a radial direction of the coil spring; and a first detector configured to detect at least one of a rotation angle of the valve body or a rotation angle of the valve shaft based on an electrostatic capacitance between the coil spring and the first conductive member, the electrostatic capacitance changing according to a state of the coil spring that changes with the rotation of the valve body and the valve shaft.

Abstract: A valve device that includes a valve body; a valve shaft configured to rotate the valve body; a coil spring being electrically conductive and configured to be twisted with rotation of the valve body and the valve shaft; a first conductive member being electrically conductive and facing an inner circumferential surface or an outer circumferential surface of the coil spring in a radial direction of the coil spring; and a first detector configured to detect at least one of a rotation angle of the valve body or a rotation angle of the valve shaft based on an electrostatic capacitance between the coil spring and the first conductive member, the electrostatic capacitance changing according to a state of the coil spring that changes with the rotation of the valve body and the valve shaft.

Abstract: A valve device that includes a valve body; a valve shaft configured to rotate the valve body; a coil spring being electrically conductive and configured to be twisted with rotation of the valve body and the valve shaft; a first conductive member being electrically conductive and facing an inner circumferential surface or an outer circumferential surface of the coil spring in a radial direction of the coil spring; and a first detector configured to detect at least one of a rotation angle of the valve body or a rotation angle of the valve shaft based on an electrostatic capacitance between the coil spring and the first conductive member, the electrostatic capacitance changing according to a state of the coil spring that changes with the rotation of the valve body and the valve shaft.

Abstract: A rotation angle detection device may include a magnetic detection member that is configured to detect a rotation angle of a rotation member, a holding member holding the magnetic detection member, and a plurality of wiring members for magnetic detection that are attached to the holding member and are connected to the magnetic detection member. The magnetic detection member has a flat plate-shaped body portion, and a plurality of lead terminals. The holding member holds the body portion of the magnetic detection member in a manner that the body portion can longitudinally slide relative to the holding member. The wiring members for magnetic detection respectively have lead terminal connecting portions. The lead terminals of the magnetic detection member are laid on the lead terminal connecting portions of the wiring members for magnetic detection and bonded thereto.

Abstract: A rotation angle detecting sensor has a sensor IC, a plurality of lead terminals, a support member, and a support structure. The sensor IC detects a rotation angle of a rotary member. The plurality of lead terminals extends in the Y-direction from the sensor IC. The support structure supports the sensor IC so as to be movable in the Y-direction with respect to the support member.

Abstract: A rotation angle detection device may include a magnetic detection member that is configured to detect a rotation angle of a rotation member, a holding member holding the magnetic detection member, and a plurality of wiring members for magnetic detection that are attached to the holding member and are connected to the magnetic detection member. The magnetic detection member has a flat plate-shaped body portion, and a plurality of lead terminals. The holding member holds the body portion of the magnetic detection member in a manner that the body portion can longitudinally slide relative to the holding member. The wiring members for magnetic detection respectively have lead terminal connecting portions. The lead terminals of the magnetic detection member are laid on the lead terminal connecting portions of the wiring members for magnetic detection and bonded thereto.

Abstract: A rotational angle detection device may include a sensor wiring member and a motor wiring member. Each of the sensor wiring member and the motor wiring member includes a terminal body section and a connector section that are formed separately from each other and are electrically connected to each other via a connection structure.

Abstract: A rotation angle detector for detecting the magnetic change caused by rotation of a rotatable member, has a resin molding, a pair of magnetic property detection members, and a plurality of sensor terminals. Each of the magnetic property detection members has a sensor portion for detecting the magnetic change caused by the rotatable member and a plurality of connecting leads. The sensor terminals are individually connected to each connecting lead. The magnetic property detection members are located within in the resin molding. The sensor portions of the magnetic property detection members are fixedly coupled to each other by an adhesive.

Abstract: Angle sensor device has magnetic force detectors detecting alternation of magnetic force caused by rotation of a throttle gear. The magnetic force detectors are buried in a molded body of the angle sensor device constructed of foamed resin. The magnetic force detectors each has a sensing unit detecting alteration of magnetic force and a computing unit computing based on signals from the sensing unit and outputting signals depending on the alteration of magnetic force and is formed in L-shape. Two of the magnetic force detectors are placed opposite each other such that one of the sensing units is disposed on the other sensing unit. The molded body has a cavity surrounded by the magnetic force detectors.

Abstract: A rotation angle detection device may include a rotational member, at least one magneto-electric transducer having a magnetism detection portion capable of detecting a change in magnetism caused by rotation of the rotational member and generating a detection signal representative of the change in magnetism, and an operation voltage output portion capable of performing an operation based on the detection signal and generating an output signal. The rotation angle detection device may further include a fixed member having an receiving recess that receives the at least one magneto-electric transducer therein, and an elastic member attached to the receiving recess in which the at least one magneto-electric transducer is received.

Abstract: A rotational angle detection device may include a sensor wiring member and a motor wiring member. Each of the sensor wiring member and the motor wiring member includes a terminal body section and a connector section that are formed separately from each other and are electrically connected to each other via a connection structure.

Abstract: A rotational angle sensor has a molded body made of a resin and having a substantial cylinder shape with a center axis, and a conversion IC buried in the molded body and having a magnetic sensing portion, a computing portion and leads connecting the magnetic sensing portion with the computing portion. The magnetic sensing portion is disposed nearly perpendicular to the center axis of the molded body. The leads are bent such that the computing portion is disposed parallel to the center axis of the molded body and that a connection between one of the lead and the computing portion is positioned closer to the center axis of the molded body than a radially outer end of the lead.

Abstract: A rotation angle detection device may include a rotational member, at least one magneto-electric transducer having a magnetism detection portion capable of detecting a change in magnetism caused by rotation of the rotational member and generating a detection signal representative of the change in magnetism, and an operation voltage output portion capable of performing an operation based on the detection signal and generating an output signal. The rotation angle detection device may further include a fixed member having an receiving recess that receives the at least one magneto-electric transducer therein, and an elastic member attached to the receiving recess in which the at least one magneto-electric transducer is received.

Abstract: Angle sensor device has magnetic force detectors detecting alternation of magnetic force caused by rotation of a throttle gear. The magnetic force detectors are buried in a molded body of the angle sensor device constructed of foamed resin. The magnetic force detectors each has a sensing unit detecting alteration of magnetic force and a computing unit computing based on signals from the sensing unit and outputting signals depending on the alteration of magnetic force and is formed in L-shape. Two of the magnetic force detectors are placed opposite each other such that one of the sensing units is disposed on the other sensing unit. The molded body has a cavity surrounded by the magnetic force detectors.

Abstract: The present invention is directed to a rotary position sensor which includes a housing, connector terminals mounted in the housing, whose connecting portions are exposed inside of the housing, a base plate mounted in the housing, on which a detection circuit is formed, and a rotor rotated relative to the base plate. Terminal portions of the detection circuit are exposed on a surface of the base plate. The terminal portions of the detection circuit are placed to face the connecting portions of the connector terminals. And, a conductive resilient member is disposed between the terminal portions of the detection circuit and the connecting portions of the connector terminals, so that the conductive resilient member allows electrical connection only between the terminal portions of the detection circuit and the connecting portions of the connector terminals.

Abstract: A sensor core used in a non-contact type rotational angle sensor is constructed of an outer core made of a magnetic material, an inner core made of a magnetic material in a disc shape disposed coaxially with and inside the outer core, a first air gap produced between an inner peripheral surface of the outer core and an outer peripheral plane of the inner core, a second air gap produced extending in a radial direction of the outer core to the first air gap, and a plate-like magnet magnetized in its thickness direction and mounted in a mounting gap of the inner core. The inner peripheral surface of the outer core is provided with stepped portions so that the first air gap stepwise increases in dimension with approach toward the second air gap.

Abstract: The invention is directed to an ignition coil for use in an internal combustion engine. The ignition coil includes a core and a bobbin in which at least a part of the core is received. Primary and secondary windings are wound around the bobbin. A secondary terminal is mounted on the bobbin, and a high-tension terminal is mounted on a housing. The secondary terminal is formed in a Y-letter shape with its body portion and a pair of leg portions. The high-tension terminal is formed with a recess, in which the leg portions of the secondary terminal are received. Each of the leg portions has a projection which is biased to contact with the inner surface of the recess.