Abstract: The present invention provides an audio system in an electronic musical instrument which can determine the characteristics of a reproduced sound automatically or simply for matching with the environment.

Abstract: A motor used in a power window system includes a motor section, a warm-gear included output section and a one-way clutch. The one-way clutch is disposed between a motor's shaft and a worm's shaft. The one-way clutch includes a drive member having at least a pair of guide surfaces, driven member coupled with the drive member, a stationary housing, and a rotary member disposed between the driven member and the stationary member and between the pair of guide surfaces. The motor and the one-way clutch has a common member fixed to both the motor and the one-way clutch.

Abstract: A clutch includes an outer ring, a driving-side rotator, a driven-side rotator and rolling elements. Each rolling element is located between an inner circumferential surface of the ring and a corresponding control surface of the driven-side rotator and has a diameter shorter than a distance between a circumferential center portion of the control surface and the inner circumferential surface of the ring but longer than a distance between each of opposing circumferential end portions of the control surface and the inner circumferential surface of the ring. The center portion is located radially outward of a straight line that connects the end portions. Each intermediate portion positioned between the center portion and the end portion is arcuately bulged beyond a straight line that connects the center portion and the end portion.

Abstract: In a motor having a motor body and a speed reduction devise composed of gear housing, a worm wheel, worm shaft with a worm, and first and second bearings rotatably supporting the worm shaft on opposite sides of the worm, the first bearing on a side of the motor body inclines a given angle to a bending side of the worm shaft, when the worm shaft is bent by an overload transmitted thereto via the worm wheel.

Abstract: In a clutch, when a driving-side rotator is rotated, the driving-side rotator engages a driven-side rotator in a rotational direction and transmits a rotational force of the driving-side rotator to the driven-side rotator. When the driven-side rotator is rotated by an external force, a rolling element is clamped between the driven-side rotator and an inner circumferential surface of a housing. At the same time the driven-side rotator is allowed to rotate while generating a desired frictional force between the rolling element and the inner circumferential surface of the housing, so that the rotation of the driven-side rotator is not transmitted to the driving-side rotator.

Abstract: A motor is provided wherein a spindle of a motor body and a worm shaft of a speed reducer are easily coupled. When a yoke housing and a gear housing are to be assembled, first engaging bulges and on the side of the yoke housing and second engaging bulges and on the gear housing are engaged to position a spindle and a worm shaft on a common axis. If the relative rotational positions of a two-plane width bulge of the spindle and a two-plane width hole of a clutch coupled to the worm shaft fail to be located at predetermined positions, the two-plane width bulge is fitted in the two-plane width hole by driving the spindle rotationally while urging the yoke housing and the gear housing in the assembled direction.

Abstract: A motor includes a motor section, a one-way clutch and an output section. The motor section includes an armature and armature shaft, and the output section includes a worm mechanism having a worm shaft disposed coaxially with the armature shaft. The one-way clutch is disposed between the armature shaft and the warm shaft. The one-way clutch includes a couple of teeth members in engagement with each other, a plurality of rollers for controlling the teeth members, and a spring holding the rollers. The spring urges the worm shaft to separate from the armature shaft.

Abstract: A position detecting device of a moving body can detect the position of a window glass of a power window device with high precision, and can set an initial position of the window glass without making any complicated adjustment. Further, this device can be realized with a simple structure and at low cost. Furthermore, the position detecting device and the vehicle door can reliably maintain an original assembly function in a normal assembly state into the moving body. The position detecting device 30 has a pushing button 202. Rotation of a ring gear 46 can be compulsorily prevented by pushing the pushing button 202 even in an operating state of a motor. Thus, if the motor is driven by pushing the pushing button 202, the position detecting device can be reliably assembled into a vehicle body in the normal assembly state irrespective of a rotating position of a motor rotating shaft (e.g.

Abstract: There is provided a mobile member position detection apparatus in which not only high-accuracy detection of a window glass or the like of a power window apparatus but also setting of an initial position being free from cumbersome adjustment can be realized with a simple structure at low cost. In a position detection apparatus, a ring gear is rotated together with a motor output shaft, and a predetermined rotational position is detected by a mobile contact and a fixed contact. In this case, since a projecting portion of a gear base is brought into contact with a contact surface of a base plate to hold the gear base, a difference between loss torque of the gear base and loss torque of the ring gear increases, and a planetary gear is not unnecessarily revolved. Thereafter, when the output shaft is rotated, holding of the carrier by a wave washer is released, and rotation of the output shaft is not transmitted to the ring gear.

Abstract: A device for detecting a position of a moving body is provided in which a position of a moving body such as a window glass of a power window device can be detected with high accuracy, initial positions can be set without complicated adjustment, such can be realized with a simple structure and at a low cost, and assemblability can be greatly improved. In the device for detecting a position of a moving body, fixed contacts press-contact a flange portion of a ring gear from a side opposite a side at which a cover plate is disposed. Accordingly, the fixed contacts can be installed after the ring gear. In a state in which the ring gear is provisionally installed, press-contact force of the fixed contacts is not applied to the ring gear. As a result, the ring gear does not rise and positional deviation does not occur, and therefore, the assemblability can be greatly improved.

Abstract: There is provided a mobile member position detection apparatus in which not only high-accuracy detection of a position of a window glass or the like of a power window apparatus but also setting of an initial position being free from cumbersome adjustment can be realized with a simple structure at low cost. In this position detection apparatus, a transmission plate and a cam plate are rotated together with the rotating shaft of a window regulator, and a limit switch is rendered conductive to detect a predetermined rotational position. Thereafter, when the rotating shaft is rotated, the intermeshing state between a tooth portion and a tooth portion obtained by a wave washer is released, and rotation of the rotating shaft is not transmitted to the cam plate. Therefore, when the rotating shaft (drive motor) is sufficiently rotated during an incorporating operation, an initial state wherein a projecting portion is brought into contact with a stopper to render the limit switch conductive is automatically set.

Abstract: A position detecting device includes a ring gear that is disposed on an outer side of an output shaft of a motor and rotates with the rotation of the output shaft, fixed contact terminals fixed to a cover plate, and a rotary contact terminal provided on a ring gear. As the ring gear rotates, the fixed contact terminals and the rotary contact terminal are brought into contact with each other, thereby detecting a rotational position of the output shaft. The position detecting device further includes a clutch mechanism for preventing the rotation of the ring gear by more than a predetermined degree while permitting the rotation of the output shaft of the motor in the state of contact. Hence, even if the output shaft of the motor is rotated sufficiently, this state of contact is maintained.

Abstract: In a position detector, a ring gear rotates with a motor output shaft and a specified rotation position is detected by a move contact and fixed contacts. When the output shaft rotates thereafter, holding a carrier by a wave washer is released and the transmission of rotation of the output shaft to the ring gear is dropped. Therefore, by rotating the output shaft sufficiently at the time of assembling, an initial state, in which a protrusion section abuts a protrusion and the move contact contacts the fixed contact, is set automatically.

Abstract: In a position detector, a spring washer is beforehand attached integrally onto a carrier. Thus, when a planetary gear train unit composed of a sun gear, a ring gear and planetary gears is temporarily assembled, the center portions of the spring washer and a carrier are aligned each other accurately. Therefore, the axis of the spring washer cannot be misaligned from that of the carrier, the assembling performance is largely improved, and an accurate clutch holding force can be obtained. Alternatively, the spring washer may be attached integrally onto a cover plate.

Abstract: A motor has an armature that includes a motor core and a commutator. An insulator for insulating the motor core is composed of winding insulating portions and a shaft insulating portion integral with the winding insulating portions. A connecting portion is formed at the end of the shaft insulating portion. The connecting portion is inserted into an insertion groove of the commutator for integral connection. Specifically, the insulator is fixed to the armature shaft by the application of windings, and the commutator is connected and fixed to the insulator. Accordingly, a larger fixing force can be obtained compared to conventional structures, and the use of an adhesive and highly accurate machining become unnecessary, thereby decreasing costs.

Abstract: A bearing structure for a motor includes an adjustable bearing for providing radial support to a rotor housed within a casing. The adjustable bearing is positionable along a radial direction relative to the casing, and forms a space with inner wall of the casing. The casing has an open injection port for communicating with the space. The space is filled with a resineous filling material that is injected through the injection port, for securing the adjustable bearing within the casing.

Abstract: A loudspeaker apparatus for an electronic keyboard musical instrument has a shelf board constituting a casing of the musical instrument. The shelf board has a sound emission opening and a first port. A loudspeaker is mounted on an upper side of the shelf board in alignment with a fringe of the sound emission opening. A first speaker box is mounted on the upper side of the shelf board so as to enclose the loudspeaker and the first port. A second speaker box is mounted on a lower side of the shelf board in fluid communication with the first speaker box via the first port. The second speaker box has a second port.

Abstract: A loudspeaker apparatus for an electronic keyboard musical instrument has a shelf board constituting a casing of the musical instrument. The shelf board has a sound emission opening. A loudspeaker is mounted on the shelf board in alignment with a fringe of the sound emission opening. A speaker box is mounted on the shelf board so as to enclose the loudspeaker.

Abstract: A closure device for opening and closing an opening by moving a closure member substantially vertically has a motor for driving the closure member. The motor is secured to a lower portion of the closure member and within substantially the same plane as the plane of movement of the closure member. Accordingly, it is possible to prevent an eccentric load from being applied to the closure member.

Abstract: A power supplying system for supplying power to a self-driving closure device in which a driving source for driving the closure device for opening and closing an opening moves together with the closure device includes a lead wire having one end connected to a power source and the other end connected to the driving source. The side of the lead wire connected to the power source is supported at a midpoint between the positions of the upper and lower limits of movement of the driving source, while the side of the lead wire connected to the driving source is supported in such a manner as to move together with the driving source. The lead wire is thus made to swing in conjunction with the movement of the driving source so as to supply power to the moving driving source. A guide shaft is provided along the direction of movement of the driving source, and a helical portion formed in the lead wire is extended or shrunk along the guide shaft so as to supply power to the moving driving source.