A ball-type constant velocity joint may include: an outer race part installed on a shaft and having a plurality of first grooves formed axially in the inner surface thereof; a first inner race part including: a first inner race rotatably installed in the outer race part, having a plurality of second grooves formed on the outer surface thereof, and having a plurality of third grooves formed axially on the inner surface thereof; and a plurality of first balls installed between the first grooves and the second grooves; and a second inner race part including: a second inner race rotatably installed in the first inner race, and having a plurality of fourth grooves formed on the outer surface thereof and facing the third grooves; and a plurality of second balls installed between the third grooves and the fourth grooves.

A method is provided for manufacturing an outer ring of a constant velocity joint including an outer ring, an inner rotational member, a torque-transmitting rolling element, and a defining member. The outer ring includes: a first inner peripheral surface to which the defining member is attached; a second inner peripheral surface; and protrusions protruding radially inward of the first inner surface and the second inner peripheral surface so as to restrict axial movement of the inner rotational member and the rolling element. The manufacturing method includes: a plastic working step involving providing a base member; and a bottom removing step involving partially removing a bottom of the base member so as to form a through hole. The plastic working step further involves providing the second inner peripheral surface. The bottom removing step further involves providing the protrusions.

A fixed ball type joint for a vehicle, which reduces the friction between a cage and an outer race and friction between the cage and an inner race by changing shapes of an inner spherical diameter of the outer race and an outer spherical diameter of the inner race. The fixed ball type joint for a vehicle includes an inner race, an outer race installed at the outside of the inner race, a plurality of balls for transmitting rotational power of the inner race to the outer race, and a cage for supporting the balls. A first inner spherical radius of the outer race is set to be smaller than a second inner spherical radius of the outer race. A first outer spherical radius of the inner race is set to be larger than a second outer spherical radius of the inner race.

A fixed ball type joint for a vehicle, which reduces the friction between a cage and an outer race and friction between the cage and an inner race by changing shapes of an inner spherical diameter of the outer race and an outer spherical diameter of the inner race. The fixed ball type joint for a vehicle includes an inner race, an outer race installed at the outside of the inner race, a plurality of balls for transmitting rotational power of the inner race to the outer race, and a cage for supporting the balls. A first inner spherical radius of the outer race is set to be smaller than a second inner spherical radius of the outer race. A first outer spherical radius of the inner race is set to be larger than a second outer spherical radius of the inner race.

A vehicle joint has a drive sleeve, a pinion shaft and a drive nut. The sleeve has a vent hole, a first set of splines and a first set of venting grooves. The pinion shaft has a second set of splines engaged with the first set of splines. A fluid gap radially outboard of the engaged spines extends the length of the engaged splines. A second set of venting grooves is engaged with the first set of venting grooves. The pinion shaft also has a first set of threads. The drive nut has a second set of threads engaged with the first set of threads. The drive nut also has a radial aperture extending through the drive nut. The first vent hole is in fluid connection with the radial aperture through some of the features described above.

A vehicle joint has a drive sleeve, a pinion shaft and a drive nut. The sleeve has a vent hole, a first set of splines and a first set of venting grooves. The pinion shaft has a second set of splines engaged with the first set of splines. A fluid gap radially outboard of the engaged spines extends the length of the engaged splines. A second set of venting grooves is engaged with the first set of venting grooves. The pinion shaft also has a first set of threads. The drive nut has a second set of threads engaged with the first set of threads. The drive nut also has a radial aperture extending through the drive nut. The first vent hole is in fluid connection with the radial aperture through some of the features described above.

A constant velocity ball joint uses a star shaped sleeve with a splined connection to its shaft. The sleeve is longitudinally retained on its shaft using a retaining ring in an outwardly facing groove of the shaft. The star shaped sleeve has a 30° assembly assist chamfer angle on one side, as well as a 45° transition chamfer angle and a 65° ramp chamfer angle facing the opposite direction. These angles control the diameter of the retaining ring as it is compressed inward into the groove during assembly and disassembly. The star shaped sleeve can be used in a dynamic length CV joint, with the splines of a configuration that allows longitudinal sliding of the sleeve on the shaft, so the shell of the dynamic length CV joint still can be of the spherical race type.

A constant velocity ball joint uses a star shaped sleeve with a splined connection to its shaft. The sleeve is longitudinally retained on its shaft using a retaining ring in an outwardly facing groove of the shaft. The star shaped sleeve has a 30° assembly assist chamfer angle on one side, as well as a 45° transition chamfer angle and a 65° ramp chamfer angle facing the opposite direction. These angles control the diameter of the retaining ring as it is compressed inward into the groove during assembly and disassembly. The star shaped sleeve can be used in a dynamic length CV joint, with the splines of a configuration that allows longitudinal sliding of the sleeve on the shaft, so the shell of the dynamic length CV joint still can be of the spherical race type.

A constant velocity universal joint includes a body which encloses the constant velocity joint components and provides a smooth outer surface. A semi-rigid plastic boot has a spherical surface sized to generally match the outer surface of the body. The material of the boot is sufficiently elastic to allow the boot to fit over the body, yet sufficiently resilient to snap the open end closed after the boot is placed over the body to provide a substantial seal preventing entry of debris under the seal. A retaining ring is positioned on the boot near the truncated end, the ring establishing the location of an elastic seal that contacts the outer surface of the body.

A constant velocity joint comprises an outer joint part with a longitudinal axis and first and second outer ball tracks. The outer joint part comprises an attachment side and an aperture side. An inner joint part has a longitudinal axis and first and second inner ball tracks. with a torque transmitting ball 14 in each pair of tracks, and a ball cage 15 with cage windows 18 in which the balls 14 are held. In each angular position of the constant velocity joint 11 an opening angle is enclosed between an outer tangent and an inner tangent at the ball. At least one of the first and second pairs of tracks is designed such that, within a small articulation angle range comprising at least the joint central plane, at at least an articulation angle, an opening angle amounts to zero, and within a greater articulation angle range, an aperture-side opening angle of a first pair of tracks widens in the opposite axial direction relative to the aperture-side opening angle of a second pair of tracks.