Abstract: Provided is a monitoring system including a diagnostic device (2), a monitoring terminal (3), and a measurement device (4) with communication function connected via a communication network (1), thereby allowing a measurement condition and a diagnosis condition to be easily changed through the monitoring terminal, and allowing appropriate measurement and diagnosis even when a usage condition of a monitor subject is changed. The diagnostic device (2) includes: a diagnosis module (17) for performing malfunction diagnosis for a monitor subject (5) based on measurement data in accordance with a diagnosis condition; and a diagnosis condition changing module (19) which allows the diagnosis condition to be changed from the monitoring terminal (3). The monitoring terminal (3) generates and transmits the measurement condition instruction information (F1) to the measurement device (4), and transmits a diagnosis condition (F2) to the diagnostic device (2).

Abstract: A wheel bearing includes a sealing device 5 positioned between inner and outer members 1 and 2. This sealing device 5 includes an elastic member 14, which eventually forms an encoder grid and is provided on a first annular sealing plate 11. A second annular sealing plate 12 is provided with sealing lips 16a to 16c. An engagement 18 between a cylindrical wall 11a of the first annular sealing plate 11 and the inner member 1 is provided with an elastic member 20 made of a material dissimilar to that for the elastic material 14. This elastic member 20 may be a rubber coated layer, resin paint layer, a thin film of adhesive material or a ring-shaped rubber member. Thereby, any possible ingress of water across an engagement surface of the annular sealing plate is prevented, accompanied by increase of the lifetime of the bearing, with no problem associated with separation and displacement of the annular sealing plates. The magnetic flux density can also be easily secured.

Abstract: A wheel bearing includes a sealing device 5 positioned between inner and outer members 1 and 2. This sealing device 5 includes an elastic member 14, which eventually forms an encoder grid and is provided on a first annular sealing plate 11. A second annular sealing plate 12 is provided with sealing lips 16a to 16c. An engagement 18 between a cylindrical wall 11a of the first annular sealing plate 11 and the inner member 1 is provided with an elastic member 20 made of a material dissimilar to that for the elastic material 14. This elastic member 20 may be a rubber coated layer, resin paint layer, a thin film of adhesive material or a ring-shaped rubber member. Thereby, any possible ingress of water across an engagement surface of the annular sealing plate is prevented, accompanied by increase of the lifetime of the bearing, with no problem associated with separation and displacement of the annular sealing plates. The magnetic flux density can also be easily secured.

Abstract: The instant invention pertains to a hub clutch assembly mounted between an axle and a hub of a four-wheel drive vehicle for changeover between two-wheel drive and four-wheel drive using fluid pressure. An inner ring is moved, by supplying or sucking air to or from one of the chambers airtightly sealed by a diaphragm, into or out of engagement with an outer ring for changeover between two-wheel drive and four-wheel drive modes. The diaphragm has a hardness of 50-70 Hw to prevent a reduction in the thrust of fluid pressure for changeover. The diaphragm also has a convex configuration extending towards the outer ring.

Abstract: A hub clutch assembly has a cover and a gasket which can be easily mounted to an end of the cover. In a hub clutch assembly in which an end of a wheel hub is closed by a cover tightened with a gasket sandwiched therebetween, the cover is formed with positioning grooves along its inner edge. Along its inner edge, the gasket is formed with positioning claws to be engaged in the grooves and claws to be press-fitted into the cover to prevent the gasket from coming off the cover. The gasket can thus be mounted to the cover simply by inserting the claws into the cover.

Abstract: A hub clutch assembly is designed so that fluid pressure is used only while the driving mode is being changed over between a four-wheel drive position and a two-wheel drive position, while eliminating the necessity of holding a coupling member in position once the driving mode has been changed over. A driven member and a driving member are coupled together and uncoupled from each other by a slider which is moved under a negative or positive air pressure. A spring is used to maintain the slider in the two-wheel drive position, while a magnet is used to maintain the slider in the four-wheel drive position.

Abstract: A hub clutch assembly mounted between an axle and a hub of a four-wheel drive vehicle and having a 2WD/4WD position indicator that is simple in structure. A slide ring is axially slidably mounted on the axle. The slide ring is biased by a spring to a position in which an external gear formed on the slide ring engages an internal gear of an outer ring to maintain 4WD position. A magnet fixed to a cover attracts the slide ring to a 2WD position and keeps it in the 2WD position. The drive mode is changed between the 2WD mode and the 4WD mode by supplying pressure fluid only for a limited time period set by timers. A pressure gauge is provided in a passage for pressure fluid to indicate whether the current drive mode is the 2WD mode or the 4WD mode.

Abstract: A hub clutch assembly is designed so that fluid pressure is used only while the driving mode is being changed over between a four-wheel position and a two-wheel drive positions, while eliminating the necessity of holding a coupling member in position once the driving mode has been changed over. A driven member and a driving member are coupled together and uncoupled from each other by a slider which is moved under a negative or positive air pressure. A spring is used to maintain the slider in the drive position, while a magnet is used to maintain the slider in the four-wheel drive position.

Abstract: A rotation transmission device which has a driving member, a driven member, engaging elements mounted between them, and a device for mechanically changing over the transmission and cut-off of turning effort and which restricts the operation of the changeover device as necessary. Between the outer ring as a driven member and the inner member as a driving member, a retainer holding the sprags spaced from one another is mounted. In the inner member are housed a solenoid and a coupling member engaging the outer ring. The solenoid is actuated by contact of a brush against a slip ring, so that the coupling member couples the outer ring with the inner member, thus causing the sprags to be inoperative.

Abstract: A rotation transmitting device has an input shaft coupled to the transmission of the engine of a four-wheel drive vehicle and an output shaft coupled to the rear wheel differential. The input and output shafts are mounted rotatably and concentrically relative to each other. An outer ring is rotatably mounted around the input shaft and a cage is rotatably mounted between the opposed surfaces of the input shaft and the outer rink and formed with a plurality of pockets. Engaging elements are mounted in the pockets and adapted to engage the opposed surfaces when the cage and the input shaft rotate relative to each other. Resilient members are mounted in the pockets to keep the engaging elements out of engagement with the opposed surfaces. The cage and the output shaft are coupled to the input shaft with a gap left therebetween in the direction of rotation so as to be rotatable to,ether. The input and output shafts are kept in a neutral position of the above gap by a retaining member.

Abstract: A torque transmission device has an outer ring and an input shaft rotatably mounted in the outer ring. The outer ring and the input shaft are formed with engaging surfaces so as to be opposite to each other. A cage is rotatably mounted between the engaging surfaces and provided with pockets. The engaging elements are mounted in the pockets and adapted to engage the engaging surfaces when the input shaft and the cage rotate either in a normal or reverse direction relative to each other. Elastic members are mounted in the pockets to hold the engaging elements in a position where they are not engaged. A control shaft is mounted coaxially and rotatably with respect to the input shaft. The cage and the input shaft are coupled together through the control shaft so that a turning torque can be transmitted therebtween. A gap is provided in the direction of rotation at a coupling portion between the input shaft and the control shaft.

Abstract: A rotation transmitting device having an outer ring formed with a bore, a holder fixedly mounted in the bore and rolling elements mounted in the holder so as to be rollable as the outer ring rotates. A pair of input shafts are provided coaxially with an axis of rotation of the outer ring so as to sandwich the rolling elements from both sides thereof. Output shafts are rotatably mounted in the bore at both sides of the input shafts. Cages are rotatably mounted between the output shafts and the outer ring and formed with pockets. Engaging elements are mounted in the pockets and adapted to be engageable between opposite surfaces of the outer ring and the output shafts with relative rotation between the cages and the output shafts in either direction. Elastic members are mounted in the pockets to keep the engaging elements in a position where they are not engaged.

Abstract: A driving force transmission device for a vehicle has a homokinetic joint having an outer ring and a clutch device having an outer ring coupled to the outer ring of the homokinetic joint. An input shaft is rotatably inserted in the outer rings. A cage is rotatably mounted between opposed surfaces of the outer rings and the input shaft. The cage has pockets. Engaging elements are mounted in the pockets. They are adapted to engage the opposed surfaces when the input shaft and the cage rotate relative to each other either clockwise or counterclockwise. Elastic members are mounted in the pockets to keep the engaging elements in a not-engaged position. The cage and the input shaft are coupled together with a gap extending in the direction of rotation formed therebetween so as to be rotatable together. A differential member are mounted on the cage or the input shaft to produce a difference in rotation therebetween.

Abstract: A rotation transmitting device having an outer ring formed with a bore, a holder fixedly mounted in the bore and rolling elements mounted in the holder so as to be rollable as the outer ring rotates. A pair of input shafts are provided coaxially with an axis of rotation of the outer ring so as to sandwich the rolling elements from both sides thereof. Output shafts are rotatably mounted in the bore at both sides of the input shafts. Cages are rotatably mounted between the output shafts and the outer ring and formed with pockets. Engaging elements are mounted in the pockets and adapted to be engageable between opposite surfaces of the outer ring and the output shafts with relative rotation between the cages and the output shafts in either direction. Elastic members are mounted in the pockets to keep the engaging elements in a position where they are not engaged.

Abstract: A clutch having an outer ring, an inner shaft mounted in the outer member, a cage interposed between the outer ring and the inner shaft and cam members movably mounted in pockets formed in the cage. A torque-setting elastic member is provided between the cage and one of the outer ring and the inner shaft so that while the torque on the elastic member is smaller than a preset value, they will rotate in unison with some clearance left therebetween in the direction of rotation. When the torque on the elastic member gets larger than the preset value, the elastic member deforms to allow the cage to turn relative to the member engaged therewith. Now, the cam elements are pushed by the cage into engagement with both cam surfaces formed on the inner periphery of the outer member and the other periphery of the inner member, thus bringing the two members into engagement. This input shaft is rotatably mounted in the outer ring by means of two bearings so as to extend through the outer ring.

Abstract: A clutch having an outer ring, an inner shaft mounted in the outer member, a cage interposed between the outer ring and the inner shaft and cam members movably mounted in pockets formed in the cage. A torque-setting elastic member is provided between the cage and one of the outer ring and the inner shaft so that while the torque on the elastic member is smaller than a preset value, they will rotate in unison with some clearance left therebetween in the direction of rotation. When the torque on the elastic member gets larger than the preset value, the elastic member deforms to allow the cage to turn relative to the member engaged therewith. Now, the cam elements are pushed by the cage into engagement with both cam surfaces formed on the inner periphery of the outer member and the other periphery of the inner member, thus bringing the two members into engagement. This input shaft is rotatably mounted in the outer ring by means of two bearings so as to extend through the outer ring.

Abstract: A clutch having an outer member, an inner member mounted in the outer member, a cage interposed between the outer and inner members and cam elements movably mounted in pockets formed in the cage. Torque-setting elastic members are provided between the cage and one of the inner and outer members so that while the torque on the elastic member is smaller than a preset value, they will rotate in unison with some clearance left therebetween in the direction of rotation. When the torque on the elastic member gets larger than the preset value, the elastic member deforms to allow the cage to turn relative to the member engaged therewith. Now, the cam elements are pushed by the cage into engagement with both cam surfaces formed on the inner periphery of the outer member and the outer periphery of the inner member, thus brining the two members into engagement.

Abstract: An improved clutch for use with an electric power steering assembly is disclosed. The improved clutch has an outer member, and a cage mounted between the outer and inner members and formed with a plurality of pockets. The improved clutch further comprises a pair of rolling elements mounted in each pocket, and a spring mounted between the rolling elements so as to bias the rolling elements away from each other into wedge-like spaces in the pocket. In the event that an associated driving system fails, the improved clutch of this invention is disconnected from the steering wheel since the outer member coupled to the driving system becomes unlocked from the inner member which is coupled to the steering wheel.