Abstract: Disclosed is a terminal connection structure of a resolver stator coil in which a part of the end portion of the stator coil is left as a free end portion which is free with respect to the terminals, whereby external impact is absorbed, and rupture of the stator coil is prevented, thereby achieving an improvement in reliability. An end portion (3) of a stator coil (1) is wound around terminals (4) to form a winding connection portion (5), and a part of the end portion (3) is left as a free end portion (30) which is not integrally connected to the terminals (4) by soldering or fusing, whereby a spring function is obtained.

Abstract: To improve winding speed and productivity of a rotating machine by providing curved edges on corner portions of tongues of an insulation cap body. In an insulation cap structure for the rotating machine, corner portions of tongues of an insulation cap body disposed in a stator core or a rotor core is formed so as to have curved edges, and a locus of a needle at the time of winding is close to a circle rather than a rectangle of prior art, whereby winding speed can be increased.

Abstract: Disclosed is a linear actuator in which a screw shaft portion is integrally formed on the distal end side of the rotation shaft of the motor, and in which the coupling and one of the support bases are eliminated, thereby achieving a reduction in the number of parts and an improvement in positioning accuracy. The linear actuator includes a screw shaft portion formed on the distal end side of the rotation shaft of a motor and a nut portion threadedly engaged with the screw shaft portion, in which the screw shaft portion and the rotation shaft are formed as an integral unit using the same material and in a seamless state.

Abstract: A sensor system for controlling a motor in a motor drive control system having a drive control circuit (4) that controls the driving of a motor (2) in accordance with an operation command, includes a main angle detecting unit (10) having a resolver (1) that detects the rotation angle of the motor (2) and a sub angle detecting unit (11) that estimates the rotation angle of the motor (2) on the basis of the counter electromotive power of the motor (2). The main angle detecting unit (10) detects the rotation angle of the motor (2) in a normal state, and the sub angle detecting unit (11) detects the rotation angle of the motor (2) when the main angle detecting unit (10) is in failure.

Abstract: A rotary contactless connector and a non-rotary contactless connector enable data transmission in a contactless mode by optical elements by combining a rotary transformer or a stationary transformer and a means for coupling the optical elements, and providing a power system with or without a buffer feature by a storage means to receive supplied electric power. The rotary contactless connector has a rotary transformer (1), a light emitting element (8) or a light receiving element provided in the rotor (3), and a stationary light emitting element or light receiving element (11). Data is transmitted between the light emitting element (8) and the light receiving element (11) while supplying electric power to the rotor (3) through the intermediary of the rotary transformer (1).

Abstract: To ensure mounting between a stator body and a motor or the like by causing a connector portion integrally formed to an insulating member to be positioned away from the stator body through an inclined surface and a gap. In a stator structure for a rotation detector according to the present invention, the inclined surface is formed on the connector portion placed at a part of one of a pair of insulating members of the stator body, and this inclined surface and the gap cause the connector portion to be located away from the stator body, whereby the stator body can be certainly mounted in a motor or the like.

Abstract: Disclosed are a winding method and structure for stator coils in which each stator coil is wound in series around a plurality of ones of coil bobbins fitted onto each stator tooth, whereby the number of coil end portions coming out from the stator coils is reduced, thereby achieving an improvement in terms of operational efficiency and reliability. In the winding method and structure for the stator coils, each stator coil is wound continuously and in series around a plurality of ones of the coil bobbins to form a series winding stator coil body, with a pair of coil ending portions coming from the ends of the series winding stator coil body.

Abstract: A resolver stator includes a stator coil which is fixed to magnetic poles of the resolver stator by a resin softer than an epoxy, whereby disconnection in the stator coil is avoided when the resolver stator is used in an environment in which temperature varies in a wide range. Wire ends of the stator coil are each wound around a terminal and fixed thereto such that one part of the wound wire end is left free from the terminal, whereby disconnection of wires is avoided.

Abstract: A projected board portion that is a part of a printed board is positioned externally to an outer diameter position of an annular stator, and can be connected to any of a connector and a lead wire even after resin scaling is performed. In a stator structure having a printed board according to the present invention, a projected board portion of a printed board provided to an insulating cover of an annular stator extends outward beyond an outer diameter position of the annular stator, and a connector or a lead wire can be freely selected and connected to the projected board portion.

Abstract: In a calculation processing device of a resolver signal, a processing speed of the resolver signal is increased, and a noise-proof characteristic thereof and also reliability thereof are improved, while total system cost is reduced. The resolver signal calculation processing device is arranged such that a resolver signal output from a resolver is digitally converted by a resolver interface into a digital rotary angle signal; the digitally-converted rotary angle signal is processed by a central calculation processing unit; and the resolver interface is provided within the resolver signal calculation processing device.

Abstract: Disclosed are a winding method and structure for stator coils in which each stator coil is wound in series around a plurality of ones of coil bobbins fitted onto each stator tooth, whereby the number of coil end portions coming out from the stator coils is reduced, thereby achieving an improvement in terms of operational efficiency and reliability. In the winding method and structure for the stator coils, each stator coil is wound continuously and in series around a plurality of ones of the coil bobbins to form a series winding stator coil body, with a pair of coil ending portions coming from the ends of the series winding stator coil body.

Abstract: A rotary contactless connector and a non-rotary contactless connector enable data transmission in a contactless mode by optical elements by combining a rotary transformer or a stationary transformer and a means for coupling the optical elements, and providing a power system with or without a buffer feature by a storage means to receive supplied electric power. The rotary contactless connector has a rotary transformer (1), a light emitting element (8) or a light receiving element provided in the rotor (3), and a stationary light emitting element or light receiving element (11). Data is transmitted between the light emitting element (8) and the light receiving element (11) while supplying electric power to the rotor (3) through the intermediary of the rotary transformer (1).

Abstract: To detect a difference between rotation angles of respective shafts by using non-contact type resolvers with high precision. In a steering rotation detector according to the present invention, a rotation angle of a first shaft of a steering wheel is detected by a first rotation detecting unit of a resolver, a rotation angle of a second shaft of front wheels side is detected by a second rotation detecting unit of a resolver, whereby a power steering with high precision is obtained.

Abstract: To ensure mounting between a stator body and a motor or the like by causing a connector portion integrally formed to an insulating member to be positioned away from the stator body through an inclined surface and a gap. In a stator structure for a rotation detector according to the present invention, the inclined surface is formed on the connector portion placed at a part of one of a pair of insulating members of the stator body, and this inclined surface and the gap cause the connector portion to be located away from the stator body, whereby the stator body can be certainly mounted in a motor or the like.

Abstract: To improve winding speed and productivity of a rotating machine by providing curved edges on corner portions of tongues of an insulation cap body. In an insulation cap structure for the rotating machine, corner portions of tongues of an insulation cap body disposed in a stator core or a rotor core is formed so as to have curved edges, and a locus of a needle at the time of winding is close to a circle rather than a rectangle of prior art, whereby winding speed can be increased.

Abstract: A projected board portion that is a part of a printed board is positioned externally to an outer diameter position of an annular stator, and can be connected to any of a connector and a lead wire even after resin sealing is performed. In a stator structure having a printed board according to the present invention, a projected board portion (10A) of a printed board (10) provided to an insulating cover (4) of an annular stator (1) is positioned externally to an outer diameter position (1A) of the annular stator (1), and a connector (30) or a lead wire (5) can be freely selected and connected to the projected board portion (10A).

Abstract: The present invention provides an automatic resolution changing method and circuit for use in a high-precision digital conversion of two-phase sinusoidal wave signals. The angular velocity (d&phgr;/dt) of the rotor obtained from the difference between these two-phase sinusoidal wave signals is integrated by a counter. Subsequently, digital conversion of the rotation angle (&thgr;) of the rotor with respect to the stator is performed, and a result of the digital conversion is outputted. At this time, in the case where the angular velocity (d&phgr;/dt) is equal to or higher than a first percentage of the follow-up speed at the current resolution of the counter, the resolution of the counter is reduced. Further, in the case where the angular velocity (d&phgr;/dt) is equal to or lower than a second percentage of the follow-up speed at the current resolution of the counter, the resolution of the counter is increased.

Abstract: A sensor system for controlling a motor in a motor drive control system having a drive control circuit (4) that controls the driving of a motor (2) in accordance with an operation command, includes a main angle detecting unit (10) having a resolver (1) that detects the rotation angle of the motor (2) and a sub angle detecting unit (11) that estimates the rotation angle of the motor (2) on the basis of the counter electromotive power of the motor (2). The main angle detecting unit (10) detects the rotation angle of the motor (2) in a normal state, and the sub angle detecting unit (11) detects the rotation angle of the motor (2) when the main angle detecting unit (10) is in failure.

Abstract: Disclosed is a terminal connection structure of a resolver stator coil in which a part of the end portion of the stator coil is left as a free end portion which is free with respect to the terminals, whereby external impact is absorbed, and rupture of the stator coil is prevented, thereby achieving an improvement in reliability. An end portion (30) of a stator coil (1) is wound around terminals (4) to form a winding connection portion (5), and a part of the end portion (3) is left as a free end portion (30) which is not integrally connected to the terminals (4) by soldering or fusing, whereby a spring function is obtained.

Abstract: A resolver stator includes a stator coil which is fixed to magnetic poles of the resolver stator by a resin softer than an epoxy, whereby disconnection in the stator coil is avoided when the resolver stator is used in an environment in which temperature varies in a wide range. Wire ends of the stator coil are each wound around a terminal and fixed thereto such that one part of the wound wire end is left free from the terminal, whereby disconnection of wires is avoided.