Abstract: A constant velocity joint includes a male element (4) having at least two trunions (8) and a shaft (12) with an outside diameter (DAE). A respective wheel (32) is mounted to rotate on each trunion (8). The joint also includes a female element (20) having, for each wheel (32), a pair of paths (22, 24) and defining a path primary circle (PCD). The ratio of the outside diameter (DAE) of the shaft (12) to the path primary circle diameter (PCD) is greater than 0.55.

Abstract: A tripod type constant-velocity universal joint includes an outer ring having three axially-extending track grooves in its inner periphery, a tripod member mounted in the outer ring and having three trunnions extending into the track grooves, and guide blocks supported on the trunnions in the track grooves, respectively. Rolling elements are disposed in raceway grooves on opposite sides of each guide block between the guide block and the outer ring. The rolling elements are retained by retainers and a moving amount restricting mechanism restricts the moving amount of the retainers to half the moving amount of the guide blocks. Each retainer has retaining plate portions retaining the rolling elements on each side of the guide block, and a plate portion coupling together the retaining plate portions. Each restricting mechanism includes a lever pivotably supported on the plate portion and having guide grooves into which protrusions are slidably fitted.

Abstract: The invention concerns an axle (1) comprising a differential (6), two transmission lines (8) from the differential and adapted each to drive a drive wheel (2), members (4) for directional control of the drive wheels (2), each transmission line (8) including an input shaft (10) connected to the differential (6), an output shaft (12) connected to the corresponding drive wheel (2), a pivot (20) with axis oriented transversely to each of the input (10) and output (12) shafts, and a double torque transmitting joint (30) between the input shaft (10) and the output shaft (12). Said double-joint comprises two elementary joints (30A, 30B) axially connected to each other along a double-joint axis and including each an elementary break center. Each shaft (10, 12) defines a fixed position, along its axis (X-X, Y-Y), of the elementary break center of the corresponding joint (30A, 30B). Additionally, one at least of the two elementary joints (30A, 30B) is a joint freely sliding along the double-joint axis.

Abstract: A constant velocity universal joint includes an outer joint member has three track grooves extending axially in an inner circumference portion thereof with a roller guide surface extending axially on each side of the respective track grooves; a tripod member has three trunnions protruding in the radial direction; and a roller mechanism is mounted in each of the trunnions of the tripod member. The roller mechanism is capable of swinging and oscillating freely with respect to the trunnions, and has a roller guided along the roller guide surface in the direction parallel to the axis line of the outer joint member. An outer peripheral surface of the roller, which is made by ground-finishing, is in contact with the roller guide surface, and has a surface roughness of 0.35 Ra or less.

Abstract: A displacement joint includes an outer joint part having circumferentially spaced recesses to form tracks. A tripod is mounted in fixed rotative engagement to a driveshaft and includes a tripod spider which has spherical arms spaced circumferentially in symmetric disposition for engaging the recesses. Roller bearing assemblies are fitted in the outer joint part to support the tripod arms, with each tripod arm guided by two roller bearing assemblies. Each roller bearing assembly has a bearing shell, which receives the tripod arm, rolling members fitted with clearance in a cage and disposed between the track of the outer joint part and a contact surface of the bearing shell. The cage is guided by shoulders of the outer joint part, which laterally bound the track, wherein the cage has opposite collars in parallel relationship to the shoulders for providing an axial stop for the rolling members and the bearing shell.

Abstract: In a no-flange type outer joint member, the amount of abrasion in a large inner diameter portion formed for a track groove is intended to be restrained. In a tripod type constant velocity universal joint including: a no-flange type outer joint member; and a roller assembly including a roller, being attached to a trunnion so as to be capable of oscillating, hardened layers are formed on portions of a large inner diameter portion of the outer joint member, which are in contact with an inclined roller assembly. In this case, a value of F/D is set equal to or less than 0.45, where a distance from a center of the track groove of the outer joint member to the ends of both the hardened layers on the side of the center of the track groove is F, and a diameter of an outer circumference of the roller assembly is D.

Abstract: A displacement joint includes an outer joint part having circumferentially spaced recesses to form tracks. A tripod is mounted in fixed rotative engagement to a driveshaft and includes a tripod spider which has spherical arms spaced circumferentially in symmetric disposition for engaging the recesses. Roller bearing assemblies are fitted in the outer joint part to support the tripod arms, with each tripod arm guided by two roller bearing assemblies. Each roller bearing assembly has a bearing shell, which receives the tripod arm, rolling members fitted with clearance in a cage and disposed between the track of the outer joint part and a contact surface of the bearing shell. The cage is guided by shoulders of the outer joint part, which laterally bound the track, wherein the cage has opposite collars in parallel relationship to the shoulders for providing an axial stop for the rolling members and the bearing shell.

Abstract: Tripod type constant velocity joint has a hollow cylindrical housing fixed to the end of a first shaft and has axially extending recessed grooves opened at one axial end and located at circumferentially trisectional positions on an inner peripheral surface. A tripod has a boss fixed to the end of a second shaft with end-spherical trunnion journals radially projecting from circumferentially trisectional positions on the boss. Roller assemblies each have an inner roller fitted on the spherical surface of the trunnion journal and an outer roller supported for rotation and axial movement on the inner roller. The outer rollers are received in the recessed grooves and rollable axially of the housing. Each recessed groove has guide surfaces contacting the outer surface of the outer roller. Guide shoulder surfaces guide the outer roller axially of the housing. A relief is locally formed along a forged parting line of the trunnion journal.

Abstract: A ball body is guided in a partially cylindrical hole into which a guide ring is inserted to secure it axially and to guide the pivoting movement. The tripod joint is suitable for the displaceable and pivotable driving connection of two shaft ends, in particular in conjunction with drive trains or side shafts of motor vehicles.

Abstract: A tripod type constant velocity universal joint that can suppress generation of shudder by reducing the 3rd order cyclic axial force and has high rotation durability. In a double-roller tripod type constant velocity universal joint, a track gap ?1 between one of the roller guiding surfaces formed on both sides of a track groove, which is on the no-load applied side, and an outer circumferential surface of an outer roller is set to satisfy ?1>0.03/A. Also, a shoulder gap ?2 between a guide shoulder surface formed at the bottom of the track groove and a side surface of the outer roller is set to satisfy ?2>0.15×A. In both the expressions, a degree of torus A is defined as a ratio of a radius of curvature r of a generatrix of the outer circumferential surface to a radius R of an outer circumference of the outer roller (A=r/R).

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: The present invention discloses a synchronizing revolute joint with an external joint member, an internal joint member and rolling bearings arranged between the external joint member and the internal joint member. Each rolling bearing includes an inner race with a rolling bearing inner surface and an outer race with a rolling bearing outer surface. Between the inner race and the outer race there is arranged a plurality of rollers enabling the outer race to roll on the inner race. One of the inner race and the outer race includes an axial guide that determines the position of the rollers in relation to that race in the axial direction. The inner race and outer race are also axially displaceable against each other.

Abstract: An annular support ring 32 is fitted onto the outer periphery of each trunnion 22. This support ring 32 and the roller 34 are unitized via a plurality of needle rollers 36 to constitute a roller assembly capable of relative rotations therebetween. In longitudinal section, each trunnion 22 has an outer periphery of straight shape, parallel to the axis of the trunnion 22. In cross section, the trunnion 22 has a generally ellipse shape with the major axis orthogonal to the axis of the joint. The inner periphery of each support ring 32 is arcuate and convex in section. This combines with the general elliptic cross sections of the trunnions 22 and the provision of predetermined clearances between the trunnions 22 and the support rings 32, to allow the support rings 32 to move along the axial directions of the trunnions 22 as well as make tilting movements with respect to the trunnions 22.

Abstract: A tripod constant velocity universal joint including an outer joint member having axially extending track grooves formed at three circumferentially equispaced positions in the inner periphery. A tripod member has a trunnion barrel adapted to be fitted to a shaft for torque transmission and trunnion journals radially projecting from three circumferentially equispaced positions in the trunnion barrel, and rollers rotatable around the associated trunnion journal for rotation through a plurality of needle rollers and received in the track grooves. Each roller is guided at its outer peripheral surface by roller guide surfaces formed in opposite lateral walls of the track groove. The torsional strength of the tripod member and the smallest outer diameter portion of the shaft are set to be substantially equal. Also, the surface pressure on the trunnion journals in rolling contact with the needle rollers is allowed up to a predetermined value.

Abstract: A tripot universal joint has a plurality of roller assemblies mounted on trunnions of a drive shaft and run in longitudinal tracks of a housing. Each roller assembly includes a roller and a needle roller bearing for rotatably mounting the roller on a roller carrier. Each needle bearing includes a plurality of needle rollers and a cage. The cage has spaced end rings that are connected by a plurality of cross bars to retain the needle rollers with respect to the roller in the axial direction, and conformations that cooperate with the roller to retain the cage with respect to the roller in the axial direction.

Abstract: A tripod constant velocity universal joint including an outer joint member having three axial track grooves in an inner periphery and roller guide surfaces formed in opposing side walls of each track groove. A tripod member has three radially projecting trunnion journals and rollers that rotate around respective trunnion journals through a plurality of needle rollers and are received in the track grooves of the outer joint member. Each roller is guided on an outer peripheral surface by the roller guide surfaces. Contact between the roller and roller guide surfaces is circular having a contact ratio that is 1.01 or higher. The contact ratio is defined by a widthwise length of the contact ellipse formed by the roller contacting the guide surface relative to the width of said roller.

Abstract: Tripod joints have a joint outer part and a joint inner part which are in driving connection to each other with cylindrical rolling bodies being connected in between and axial displacement and pivotability being ensured. The longitudinal axes of adjacent rolling bodies are arranged at an acute angle to one another. This may result in an improved mechanical behavior of the tripod joint particularly during pivoting. The tripod joints may be suitable for the displaceable and pivotable driving connection of two shaft ends, in particular in conjunction with drive trains or side shafts of motor vehicles.

Abstract: A constant velocity (CV) joint and, more particularly, a retaining ring for a CV joint and a method of assembling a retaining ring on a CV joint. The tripod constant velocity joint may be assembled by placing a retaining ring in alignment with a trunnion head, applying a force to the aligned retaining ring to expand the diameter of said retaining ring so that a fracture area on the retaining ring fractures. After the fracture area fractures, the retaining ring is displaced into a retaining groove on the trunnion. The retaining ring includes an outer surface, an inner surface, a first notch extending from one of the inner and outer surfaces to the other of the inner and outer surfaces, and a fracture area extending from the first notch to the other of the inner and outer surfaces.

Abstract: A constant velocity joint with an outer part having innerly a normal range, an extended range, and a plurality of outer bores circumferentially spaced between a plurality of longitudinally extending tracks, Each track having a bottom spaced between two oppositely disposed sidetracks. An inner part is disposed within said outer joint part, having a plurality of sides circumferentially spaced between a plurality of trunions, each trunion having a top and an inner race. Also, a plurality of rollers each having an inner bore are mounted on said inner race of each trunion, whereby angular and axial displacement occur between the inner joint and the outer joint. Wherein at least one energy absorption surfaces is located in the extended range on the outer part. The energy absorption surface interferes with at least one of the rollers when the joint is operated beyond said normal range.

Abstract: A tripode joint having an outer joint part (11) having three uniformly circumferentially distributed recesses (15) which forms pairs of circumferentially opposed tracks (16) for receiving a roller assembly (13). Each roller assembly (13) is carried on an arm (19) of a tripode star (12). Each arm head has a spherical surface portion. Each roller assembly (13) includes an annular roller carrier (23, 123), bearing needles (24) rotating on the roller carrier (23, 123), and rollers (25) which are rotatably supported on the bearing needles (24). The roller carriers (23, 123) include stop collars which delimit the needle contact face, and which are held with an axial displacement clearance in the direction of the roller axes between axial securing members (26, 27) in such a way that they are secured against being lost relative to the rollers (25).

Abstract: Tripod joints have a joint outer part and a joint inner part which are in driving connection to each other with cylindrical rolling bodies being connected in between and axial displacement and pivotability being ensured. In this case, the rolling bodies extend in rectilinear, guiding running paths of the joint outer part. The rolling bodies are mounted in a manner such that they may be displaced longitudinally via the cages but to a restricted extend radially with respect to the pressure element. The radial extent of the running paths or mating surfaces is greater than the longitudinal extent of the rolling bodies. This enables the rolling bodies to move on a path in the shape of a circular arc. The arrangement provides an improved, mechanical transmission function of the tripod joint and reduced wear as a result. The tripod joint is suitable for the displaceable and pivotable driving connection of two shaft ends, e.g., in conjunction with drive trains or side shafts of motor vehicles.

Abstract: The invention relates to a tripod joint assembly, suited for the driveline of motor vehicles. It includes an outer joint part, rollers and an inner joint part which is connected to a shaft in a rotationally fast way, with an annular gap being formed between the shaft and the outer joint part, as well as a convoluted boot for sealing the annular gap. The outer joint part comprises a wall whose outer contour, in cross-section, deviates from the circular shape and which comprises a radially outwardly directed, circumferentially extending bead. The convoluted boot comprises an adapter ring and a convoluted portion connected to the adapter ring, with the adapter ring, on its radial inside, comprising an annular circumferential recess and, in its cross-section, being suitable for being fitted on to the outer joint part. When the adapter ring is fitted on to the outer joint part, the bead of the outer joint part engages the circumferential recess of the adapter ring in order to provide axial security.

Abstract: A tripod type constant velocity universal joint of a single roller type is provided, which can be used in a vehicle operating at high angles without causing an increase in costs by lowering the level of vibration even at a high operating angle. A tripod type constant velocity universal joint is composed of an outer joint member with three track grooves, extending in its axial direction, on the inner circumferential surface of the outer joint member, a tripod member with three radially projecting leg shafts around the circumference of the tripod member, and rotatable rollers mounted on each leg shaft through a plurality of needle rollers and positioned in the track grooves of the outer joint member, the outer circumferential surfaces of the rollers being guided by roller guide surfaces provided on both sides of the track grooves. In this construction, grooves extending along the track grooves are provided on the roller guide surfaces where the rollers contact.

Abstract: This spider assembly comprises a spider which comprises a hub intended to be connected to a shaft and from which there project several arms (3). Each arm comprises a cylindrical runway surface (12), a roller (5) mounted to rotate and slide on each arm via a ring of needles (4), and a split elastic ring (8) for retaining the ring of needles and the roller on the arm. The ring is axially fixed by snap-fitting onto the arm, the width of the split in the ring after mounting being zero or very much smaller than the diameter of the needles. The ring comprises, on its interior face (16), both a needle-retaining surface (20) that is flared towards the free end of the arm and delimits the space in which the needles run, and a roller-retaining surface (22) that is flared towards the free end of the arm. The flared roller-retaining surface is more or less in the continuation of the flared needle-retaining surface (20).

Abstract: A constant velocity fixed ball joint in the form of a counter-track joint comprising an outer joint part with outer tracks, an inner joint part with inner tracks, torque-transmitting balls accommodated in pairs of tracks, and a ball cage with cage windows in which the balls are held in a common plane. First outer tracks and first inner tracks form first pairs of tracks which diverge from one another running in a first axial direction towards the connection end of the inner joint part and hold first balls. Second outer tracks and second inner tracks form second pairs of tracks which diverge from one another running in a second axial direction towards the connection end of the outer joint part and hold second balls. First pairs of tracks are positioned radially opposite other first pairs of tracks, and second pairs of tracks are positioned radially opposite other second pairs of tracks.

Abstract: A tripod type constant-velocity universal joint is provided in which a tripod member is prevented from coming out of an outer ring. A guide block is supported on each trunnion of the tripod member mounted in the outer ring. Rolling elements are mounted between raceway grooves formed in both side faces of the guide blocks and raceway grooves formed in both sides of track grooves of the outer ring so that rolling elements will make a pure rolling movement over the entire moving range of the guide block. A lever is mounted to a plate portion of each retainer for retaining the rolling elements. Pins are inserted in a pair of guide grooves formed in the lever. One of the pins is secured to the outer ring and the other pin is secured to the guide block. A stopper ring is mounted to the open end of the outer ring, so that the stopper ring will prevent the rolling elements from coming out of the raceway grooves, thereby preventing the tripod member from coming out of the outer ring.

Abstract: A needle roller retainer for insertion into an outer ball of a tripot style joint includes a cylindrical portion having an inner end and an outer end, a rib portion extending from the inner end of the cylindrical portion, and a flange portion extending from the outer end of the cylindrical portion. The outer ball includes a groove for receiving the rib portion.

Abstract: A tripod type constant velocity universal joint which includes an outer member having three axially extending track grooves formed in an inner circumferential surface thereof, each of the track grooves having roller guide surfaces on a pair of opposing side walls thereof, a tripod member having three radially projecting trunnions, and rollers rotatably carried on the trunnions, respectively, through a series of cylindrical rolling elements, the rollers being accommodated in the track grooves, respectively, so that the rollers are movable axially of the outer member with each said roller rolling along one of the opposing roller guide surfaces. The cylindrical rolling elements roll directly on an outer circumferential surface of the trunnion. Each said roller has an annular radial projection at each axial end thereof.

Abstract: In order to simply the structure and reduce the size of a tripod type constant-velocity universal joint in which the moving amount of the retainers is restricted to half the moving amount of the guide blocks, raceway grooves 3, 8 are formed in both sides of a guide block 6 supported on each trunnion 5 of a tripod member 4 and in the sides of each track groove 2 of the outer ring, a plurality of rolling elements 9 mounted between the raceway grooves 3 and 8 are retained by retainers 10, and the retainers 10 on both sides of each guide block 6 are coupled together by a coupling plate 13. A pair of inclined grooves 21a, 21b, 22a, 22b that are inclined in opposite directions to each other are provided on the inner surface 11 of the outer wall of each track groove 2 of the outer ring and on the outer surface 12 of each guide block 6, and balls 23 received in the cross portions of the pair of inclined grooves 21a, 21b, 22a, 22b are supported by each coupling plate 13 so as to be movable as the retainers 10 move.

Abstract: To provide a constant velocity universal joint having a high resistance to cracking, a high dimensional stability and an excellent rolling fatigue life, the constant velocity universal joint includes an outer coupling member (5), an inner coupling member such as a tripod member (2), and a drive transmitting member such as rollers (7) operatively interposed between the outer and inner coupling members (5 and 2). At least one of the outer coupling member (5), the tripod member (2) and the rollers (7) has a carbonitrided layer and, at the same time, an austenite grain size is greater than the grade of No. 10.

Abstract: An annular support ring 32 is fitted onto the outer periphery of each trunnion 22. This support ring 32 and the roller 34 are unitized via a plurality of needle rollers 36 to constitute a roller assembly capable of relative rotations therebetween. In longitudinal section, each trunnion 22 has an outer periphery of straight shape, parallel to the axis of the trunnion 22. In cross section, the trunnion 22 has a generally ellipse shape with the major axis orthogonal to the axis of the joint. The inner periphery of each support ring 32 is arcuate and convex in section. This combines with the general elliptic cross sections of the trunnions 22 and the provision of predetermined clearances between the trunnions 22 and the support rings 32, to allow the support rings 32 to move along the axial directions of the trunnions 22 as well as make tilting movements with respect to the trunnions 22.

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: A telescopic tripot universal joint comprises an outer drive member having three longitudinal drive channels which include two opposing concave side surfaces having a parabolic profile, an inner drive member having three radial trunnions having a radially outward facing semi-spherical surface for tiltably mounting a drive ball assembly which has a bearing train disposed radially between an inner ball tiltably engaged to the trunnion and an outer ball having a tread face which directly opposes the concave side surfaces of the drive channels. The parabolic side surface has a radially outward portion having a smaller radius of curvature than a radial inward portion of the parabolic side surface. Moreover, the radius of the inward portion is equal to or greater than the maximum radius of the outer ball thereby assuring the tread face of the outer ball does not bind against the inward portion of the parabolic side surface on the unloaded side.

Abstract: A plunging, constant-velocity, tripode universal joint comprising a first rotary member (30) having three trunnions (31), a roller (34) having a cylindrical bore mounted on a spherical surface (32) on each trunnion so that the cylindrical bore engages the spherical surface and so that each roller can rotate, tilt and slide relative to its supporting trunnion, a second rotary member (40) having three grooves parallel to its rotary axis, each roller being engaged with one of the grooves, the engagement between each roller and track surfaces in its associated groove being at three points such that the orientation of the roller with respect to the second member is determined solely by said engagement and wherein when the joint is transmitting torque each roller (34) is only in contact with the track surface(s) (42, 43) through which the torque is being transmitted.

Abstract: A tripot joint (10) includes a tripot housing (12) having three guide channels (24) receiving three corresponding trunnions (20) of a tripot spider (16). A ball assembly (28) is mounted on each of the trunnions (20) and received in the guide channels (24). The ball assembly includes an inner ball (30), and outer ball (40), and a complement of roller elements (52). The inner balls (30) are slidable axially on the roller elements (52) relative to the outer balls (40). Each ball assembly (28) includes at least one yieldable retainer (58) mounted on the outer ball (40) and projecting into the axial sliding path of the inner ball (30) in at least partial overlapping relation to the inner ball (30). The yieldable retainers secure the inner and outer balls (30, 40) against axial separation prior to joining the ball assemblies (28) with the trunnions (20) and guide channels (24).

Abstract: A tripod type constant velocity joint comprising a hollow cylindrical housing fixed to the end of a first rotary shaft and formed at the inner peripheral surface thereof with axially extending recessed grooves opened at one axial end and located at circumferentially trisectional positions on the inner peripheral surface, a tripod consisting of a boss fixed to the end of a second rotary shaft, and end-spherical trunnion journals radially projecting from circumferentially trisectional positions on the boss, a roller assemblies each consisting of an inner roller swingably fitted at the inner peripheral surface thereof on the spherical outer peripheral surface of the trunnion journal, and an outer roller supported for rotation and axial movement on the outer peripheral surface of the inner roller through needle rollers, wherein the outer rollers are received in the recessed grooves in the housing and are rollable axially of the housing, each recessed groove consists of guide surfaces contacting the outer peripher

Abstract: A constant velocity universal joint is disclosed which includes an outer joint member with three axial track grooves and a tripod member with three radially projecting trunnion journals, each of the trunnion journals carrying a roller assembly received in each of the track grooves, a projection being formed at an end of each trunnion for interference with the roller assembly.

Abstract: A constant velocity joint of tripod type which is both highly strong and durable, and which can maintain a low axial force and low shudder when transmitting torque at a joint angle. The constant velocity joint of tripod type comprises a roller assembly including an outer roller, an inner roller and a needle bearing located therebetween. The outer roller is provided with needle bearing retaining rings and needle bearing stop rings, at each of its upper and lower ends, respectively. The inner roller moves relative to the outer roller in the axial direction. The outer face of the inner roller and the inner face of the outer roller have generally spherical shapes of dimensions similar to each other to freely engage, respectively. The outer face of the trunnion is provided with a partially cylindrical portion with inclined relative to a trunnion centerline.

Abstract: A telescopic tripot universal joint comprises an outer drive member having three longitudinal drive channels which include two opposing concave side surfaces, an inner drive member having three radial trunnions having a radially outward facing semi-spherical surface for tiltably mounting a drive ball assembly which has a bearing train disposed radially between an inner ball tiltably engaged to the trunnion and an outer ball having a tread face which directly opposes the concave side surfaces of the drive channels. The ball assembly being free to wobble about a Z-axis wherein the assembly pivots about an X-axis disposed laterally to the outer drive member and pivots about a Y-axis disposed longitudinally to the outer drive member. The channel carries a guide rail which extends longitudinally lengthwise to the channel and projects radially inward in order to contact the outer ball when the ball assembly pivots about the X-axis, i.e., tilts relative to the axis of the outer drive member.

Abstract: A variety of cutout surfaces are formed on trunnions by cutting out parts of a spherical surface of each of the trunnions, to which no torque is applied. The cutout surfaces comprise a pair of opposite flat surface sections, bores, recesses or wide flat surfaces, and curved surface sections, for example.

Abstract: A constant velocity transmission joint having a male element (10) having a plurality of arms (14); a female element (20) defining a pair of facing tracks (22, 23) for each arm (14), which tracks are situated on opposite sides of the arm; and, mounted on each arm, a mechanical transmission member (30) that is movable in the longitudinal direction of the pair of tracks (22, 23), being held axially by the tracks, and establishing a connection with the arm that is swiveling and axially movable along the axis (Y—Y) of the arm. The transmission member includes a circularly symmetrical outer roller placed between the corresponding tracks to roll on one or other of them. For each arm, the outside profile in meridian half-section of the outer roller (32) comprises two arcs (32A, 32B) having curvature of the same sign and cooperating with two arcs (22A, 22B) of the substantially complementary profile of the associated tracks (22, 23) so as to form two spaced-apart contact zones (37A, 3TB).

Abstract: A tripode joint having an outer joint part (11) having three uniformly circumferentially distributed recesses (15) which form pairs of circumferentially opposed tracks (16) for receiving a roller assembly (13). Each roller assembly (13) is carried on an arm (19) of a tripode star (12). Each arm head has a spherical surface portion. Each roller assembly (13) includes an annular roller carrier (23), bearing needles (24) rotating on the roller carrier (23), and rollers (25) which are rotatably supported on the bearing needles (24). The roller carriers (23) include stop collars which delimit the needle contact face, and which are held with an axial displacement clearance in the direction of the roller axes between axial securing members (26, 27) in such a way that they are secured against being lost relative to the rollers (25).

Abstract: A constant velocity joint including an outer joint member formed with three track grooves having roller guide surfaces arranged in circumferentially opposed relation to each other; a tripod member having three radially projecting leg shafts; a plurality of rollers inserted in the track grooves; and a ring fitted directly on each of the leg shafts to support the rollers for rotation, the rollers being movable along the roller guide surfaces axially of the outer joint member, wherein each roller includes a set of annular roller portions and a plurality of balls interposed between outer raceway surfaces formed in rows in an inner periphery of the annular roller portions and two rows of inner raceway surfaces formed in an outer periphery of the ring, and wherein the inner peripheral surface of the ring is cylindrical and the outer peripheral surface of the leg shaft is spherical.

Abstract: A tripod type constant-velocity joint includes raceway grooves formed in side faces of each track groove formed in an inner periphery of an outer ring, and in side faces of each guide block supported by each of three trunnions of a tripod member. A plurality of rolling elements mounted between the raceway grooves are retained by retainers. The retainers have a structure such that a plurality of pockets are formed in plate members, and a plurality of claws extending in opposite directions are provided on a periphery of each pocket, so that the retainers can be formed by performing pressing operations.

Abstract: It is intended that the induced thrust and slide resistance of a constant velocity joint should be further reduced. To this end, there is provided a constant velocity joint comprising an outer joint member having three track grooves each having circumferentially opposed roller guide surfaces, a tripod member having three radially projecting leg shafts, a roller inserted in each track groove, and a ring fitted on each leg shaft to rotatably support the roller, the roller being movable along the roller guide surfaces axially of the outer joint member. The roller includes a set of annular roller segments, with a plurality of balls interposed between outer raceway surfaces formed on the inner periphery of the annular roller segments and a single inner raceway surface formed on the outer periphery of the ring.

Abstract: A tripot joint (10) includes a tripot housing (12) having three guide channels (24) receiving three corresponding trunnions (20) of a tripot spider (16). A ball assembly (28) is mounted on each of the trunnions (20) and received in the guide channels (24). The ball assembly includes an inner ball (30), and outer ball (40), and a complement of roller elements (52). The inner balls (30) are slidable axially on the roller elements (52) relative to the outer balls (40). Each ball assembly (28) includes at least one yieldable retainer (58) mounted on the outer ball (40) and projecting into the axial sliding path of the inner ball (30) in at least partial overlapping relation to the inner ball (30). The yieldable retainers secure the inner and outer balls (30, 40) against axial separation prior to joining the ball assemblies (28) with the trunnions (20) and guide channels (24).

Abstract: The tripod member has three trunnions which are projected radially. Each of the trunnions carries a roller, and this roller is accommodated in one of the track grooves in the outer joint member. The outer peripheries of the rollers and the roller guideways make angular contact with each other. Support rings are fitted onto the outer peripheries of the trunnions. These support rings and the rollers are assembled (unitized) via a plurality of needle rollers to constitute roller assemblies capable of relative rotations. In longitudinal sections, the outer peripheries of the trunnions have straight shapes parallel to the axes of the trunnions. In cross sections, the outer peripheries are elliptic in shape, with their respective major axes perpendicular to the axis of the joint. The inner peripheries of the support rings have arcuate convex sections.

Abstract: An annular support ring 32 is fitted onto the outer periphery of each trunnion 22. This support ring 32 and the roller 34 are unitized via a plurality of needle rollers 36 to constitute a roller assembly capable of relative rotations therebetween. In longitudinal section, each trunnion 22 has an outer periphery of straight shape, parallel to the axis of the trunnion 22. In cross section, the trunnion 22 has a generally ellipse shape with the major axis orthogonal to the axis of the joint. The inner periphery of each support ring 32 is arcuate and convex in section. This combines with the general elliptic cross sections of the trunnions 22 and the provision of predetermined clearances between the trunnions 22 and the support rings 32, to allow the support rings 32 to move along the axial directions of the trunnions 22 as well as make tilting movements with respect to the trunnions 22.

Abstract: A rolling bearing ring of a constant velocity joint employs steel of a component composition containing at least, as alloying elements, at least 0.5 mass % and 0.7 mass % at most of carbon, at least 0.5 mass % and 1.0 mass % at most of silicon, and at least 0.5 mass % and 1.0 mass % at most of manganese with the remainder including iron and inevitable impurities. The rolling bearing ring has a structure with the raceway surface subjected to induction hardening. A rolling bearing ring of a constant velocity joint and a support component for rolling and swinging motion are obtained, improved in the lifetime with respect to the rolling and swinging motion involving sliding at the raceway surface subjected to induction hardening, and suppressed in cost to a level equal to that of a conventional product.

Abstract: An anti-shudder constant velocity universal joint of the tripod type is provided having an outer joint member including three circumferentially distributed, axially extending longitudinal tracks formed therein, and an inner joint member having three circumferentially distributed radial journals arranged to engage the longitudinal tracks when the joint is assembled. The end of each journal is mated with and supports rotation of a roller bearing assembly, while rotating and pivoting within the roller bearing assembly upon articulation of the joint. This reduces the frictional forces on the roller bearings created by maintaining the roller bearings in a relatively proper/parallel orientation within the tracks by allowing the journal ends to freely rotate and pivot therein. A spherical-to-spherical contact surface is provided between the journal ends and an inner ring of the respective roller bearing assemblies to lower Hertzian stresses by distributing forces over a larger region of contact.