Abstract: A switch circuit is configured of a first semiconductor element and a second semiconductor element connected in series, and receives a DC voltage of 100 V or more. The drive circuit causes the first semiconductor element or the second semiconductor element to perform a switching operation. The isolated power supply circuit converts a predetermined power supply voltage into an isolated first power supply voltage, and outputs the first power supply voltage to the drive circuit. The isolation signal converter converts a first signal of 6 MHz or more into an isolated first drive signal, and outputs the first drive signal to the drive circuit. The single substrate mounts the isolated power supply circuit and the isolation signal converter. Both the first semiconductor element and the second semiconductor element are wide bandgap semiconductor elements.

Abstract: A plunging type constant velocity universal joint includes outer and inner joint members that transmit torque therebetween through intermediation of a ball while allowing angular displacement. The outer joint member is configured to receive an internal component comprising the ball and the inner joint member so that the internal component is slidable in an axial direction. The universal joint also includes a stopper mechanism that has an annular groove, and is configured to restrict axial displacement of the internal component by allowing the ball to interfere with a circlip fitted to the annular groove. The annular groove has a conical surface, which is inclined with respect to an axial direction so that the conical surface and an axial tangent line at a contact point between the ball and the circlip form a wedge angle opened from an opening end portion of the outer joint member toward a far side.

Abstract: A plunging type constant velocity universal joint includes outer and inner joint members that transmit torque therebetween through intermediation of a ball while allowing angular displacement. The outer joint member is configured to receive an internal component comprising the ball and the inner joint member so that the internal component is slidable in an axial direction. The universal joint also includes a stopper mechanism that has an annular groove, and is configured to restrict axial displacement of the internal component by allowing the ball to interfere with a circlip fitted to the annular groove. The annular groove has a conical surface, which is inclined with respect to an axial direction so that the conical surface and an axial tangent line at a contact point between the ball and the circlip form a wedge angle opened from an opening end portion of the outer joint member toward a far side.

Abstract: The present invention provides a compact constant velocity universal joint having high strength, and superior operability and durability. In the constant velocity universal joint of the present invention, an offset angle øT formed by a center of curvature OT0 of a guiding groove 2b of an outer component 2, an intersecting point Q between a joint plane P and a PCD, and a center of curvature OT1 of a guiding groove 3b of an inner component 3 is set to 11.0°?øT?15.0°.

Abstract: A data communication system includes a server, data link started side apparatus, data link starting side apparatus, and originating server. The server provides a service through a network. The data link started side apparatus performs line control between itself and the line connection destination, and performs LAN control between itself and the server through the network, thereby relaying packets between the line connection destination and the server. The data link starting side apparatus is connected to the data link started side apparatus, disconnects the line between itself and the data link started side apparatus on the basis of an MITF dial-up dormant protocol when there is no communication between itself and the server for a predetermined period of time, and shifts to a dormant state.

Abstract: A constant velocity joint 1 disposed on the outboard side of a drive axle for transmitting drive power to a wheel, comprising an outer joint member 2 having a plurality of track grooves 3 on the spherical inner peripheral surface 2a, an inner joint member 4 having a plurality of track grooves 5 on the spherical outer peripheral surface 4a, torque transmitting balls 6 disposed in a plurality of ball tracks formed by the opposed track grooves 3 and 5 of both joint members 2 and 4, and a cage 8 interposed between both joint members 2 and 4 and receiving and holding the torque transmitting balls 6 in pockets 7, wherein the outboard-side end of the cage 8 is formed with an opening 8x for removably inserting the inner joint member 4 and the inboard-side end is formed with an opening 8y whose diameter is smaller than that of the outboard-side opening 8x.

Abstract: A constant velocity universal joint has an outer joint member having eight curved track grooves axially extending along an inner circumferential surface, an inner joint member having eight curved track grooves axially extending along an outer circumferential surface, eight balls respectively arranged in eight ball tracks provided as pairs of the track grooves of the outer and inner joint members. The center of each track groove of the outer joint member is axially displaced a predetermined distance from the spherical center of the inner circumferential surface. The center of each track groove of the inner joint member is axially displaced the same distance from the spherical center of the outer circumferential surface in the direction opposite to that of the outer joint member. A PCD gap in the ball track is in the range of 5 ?m to 50 ?m.

Abstract: A constant velocity joint 1 disposed on the outboard side of a drive axle for transmitting drive power to a wheel, comprising an outer joint member 2 having a plurality of track grooves 3 on the spherical inner peripheral surface 2a, an inner joint member 4 having a plurality of track grooves 5 on the spherical outer peripheral surface 4a, torque transmitting balls 6 disposed in a plurality of ball tracks formed by the opposed track grooves 3 and 5 of both joint members 2 and 4, and a cage 8 interposed between both joint members 2 and 4 and receiving and holding the torque transmitting balls 6 in pockets 7, wherein the outboard-side end of the cage 8 is formed with an opening 8x for removably inserting the inner joint member 4 and the inboard-side end is formed with an opening 8y whose diameter is smaller than that of the outboard-side opening 8x.

Abstract: A novel constant velocity universal joint with eight ball is provided for realizing the improved durability of the joint under high-loaded conditions and the suppressed variations of lifetimes of the joints. The universal joint has an outer joint member having eight curved track grooves axially extending along an inner circumferential surface with a spherical shape, an inner joint member having eight curved track grooves axially extending along an outer circumferential surface with a spherical shape, eight balls respectively arranged in eight ball tracks provided as pairs of the track grooves of the outer joint member and the track grooves of the inner joint member, and a cage having pockets for respectively holding the balls. The center of each track groove of the outer joint member is axially displaced a predetermined distance from the spherical center of the inner circumferential surface.

Abstract: A reliable brake rotor and wheel bearing assembly are proposed which make unnecessary adjustment of runout of brake rotor at the customer's factory. For runout of each of the mounting surface and back of the brake rotor itself, and runout of the side of the wheel mounting flange of the inner member to which is mounted the brake rotor, the maximum difference between the peaks of crests and troughs in each period of surface runout is restricted within a standard value, and the brake rotor is mounted to the wheel mounting flange, thereby eliminating the necessity of mounting of the brake rotor and adjustment of runout after mounting at the customer's factory to provide a reliable automotive wheel bearing assembly.

Abstract: A wheel bearing assembly has a disk rotor for a brake integrally formed with a wheel-mounting flange of an inner member. Raceways opposite double-row raceways of the outer member are arranged on separate ring members pressed onto a tubular portion of the inner member. Thus, it is unnecessary to mount a brake rotor to the wheel bearing assembly, to reduce the number of parts, and to use different materials for the inner member and the inner ring members. For example, an FC-family cast iron, which is superior in seizure resistance, can be used for the inner member, and a tough bearing steel can be used for the ring member to achieve both excellent brake function and bearing function.

Abstract: A reliable brake rotor and wheel bearing assembly are proposed which make unnecessary adjustment of runout of brake rotor at the customer's factory. For runout of each of the mounting surface and back of the brake rotor itself, and runout of the side of the wheel mounting flange of the inner member to which is mounted the brake rotor, the maximum difference between the peaks of crests and troughs in each period of surface runout is restricted within a standard value, and the brake rotor is mounted to the wheel mounting flange, thereby eliminating the necessity of mounting of the brake rotor and adjustment of runout after mounting at the customer's factory to provide a reliable automotive wheel bearing assembly.

Abstract: A reliable brake rotor and wheel bearing assembly are proposed which make unnecessary adjustment of runout of brake rotor at the customer's factory. For runout of each of the mounting surface and back of the brake rotor itself, and runout of the side of the wheel mounting flange of the inner member to which is mounted the brake rotor, the maximum difference between the peaks of crests and troughs in each period of surface runout is restricted within a standard value, and the brake rotor is mounted to the wheel mounting flange, thereby eliminating the necessity of mounting of the brake rotor and adjustment of runout after mounting at the customer's factory to provide a reliable automotive wheel bearing assembly.

Abstract: A novel constant velocity universal joint with eight ball is provided for realizing the improved durability of the joint under high-loaded conditions and the suppressed variations of lifetimes of the joints. The universal joint has an outer joint member having eight curved track grooves axially extending along an inner circumferential surface with a spherical shape, an inner joint member having eight curved track grooves axially extending along an outer circumferential surface with a spherical shape, eight balls respectively arranged in eight ball tracks provided as pairs of the track grooves of the outer joint member and the track grooves of the inner joint member, and a cage having pockets for respectively holding the balls. The center of each track groove of the outer joint member is axially displaced a predetermined distance from the spherical center of the inner circumferential surface.

Abstract: A wheel bearing assembly is provided which needs no mounting of a brake rotor and which is small in the number of parts. By integrally forming a disk rotor for a brake on a wheel-mounting flange of an inner member, and providing raceways opposite double-row raceways of the outer member on separate inner ring members pressed onto a tubular portion of the inner member, it is possible to make it unnecessary to mount a brake rotor to the wheel bearing assembly, reduce the number of parts, and use different materials for the inner member and the inner ring members i.e. an FC-family cast iron, which is superior in seizure resistance, for the inner member, and a tough bearing steel for the inner ring member to achieve both excellent brake function and bearing function.