Class / Patent application number | Description | Number of patent applications / Date published |
464111000 | Tripod coupling | 59 |
20080287201 | Constant Velocity Joint of Tripod Type - A constant velocity joint for a drive system having a first rotating shaft and a second rotating shaft coupled with the constant velocity joint, wherein the constant velocity joint comprises: a hollow housing having an opening at one end, and a closing at its opposite end fixed to an end of the first rotating shaft, an inner face of the housing including a plurality of guide grooves extending in an axial direction of the housing and spaced equally apart in a circumferential direction of the housing, each groove having a pair of side faces opposing to each other; and a tripod disposed at an end of the second rotating shaft, having a plurality of trunnions each positioned in a corresponding one of the guide grooves and being spaced equally apart in a circumferential direction of and at an angle normal to the second rotating shaft; and, an inner roller mounted to an outer end portion of each of the trunnions, an outer roller mounted on an outer face of each inner roller with needle rollers engaged between the inner and outer rollers, and allowing the outer face of each outer roller to roll and move in the corresponding one of the guide grooves and for transmitting a load between the first and second rotating shafts to drive the driving system. Each trunnion includes an at least partially spherical surface in a circumferential area subjecting to the load, and a cylindrical protrusion disposed at the at least partially spherical surface and protruded to a distance from the at least partially spherical surface in a direction normal to the axis of the respective trunnion, the cylindrical protrusion having an at least partially spherical surface at its distal end for surface-to-surface contact with an at least partially spherical inner face of the respective inner roller while defining a gap around the cylindrical protrusion and between the at least partially spherical surface of the respective trunnion and the at least partially spherical inner face of the respective inner roller. | 11-20-2008 |
20080287202 | Constant Velocity Joint of Tripod Type - A constant velocity joint for a drive system with a first rotating shaft and a second rotating shaft, comprises: a hollow housing having an open end and a closed end and fixed to the first rotating shaft, an inner face of the housing including a plurality of guide grooves extending in an axial direction and spaced equally apart in a circumferential direction of the housing; and a tripod disposed at an end of the second rotating shaft, having a plurality of trunnions each positioned in a corresponding one of the guide grooves and being spaced equally apart in a circumferential direction of and at an angle normal to the second rotating shaft; and, an inner roller mounted to an outer end portion of each of the trunnions, an outer roller mounted on an outer face of each inner roller with needle rollers engaged between the inner and outer rollers, and allowing the outer face of each outer roller to roll and move in the corresponding one of the guide grooves and for transmitting a load between the first and second rotating shafts to drive the driving system. Each trunnion includes an a spherical surface in a circumferential area subjecting to the load, and a cylindrical protrusion disposed at the spherical surface and protruded to a distance from the at least partially spherical surface in a direction normal to the axis of the respective trunnion, the cylindrical protrusion having an spherical surface at its distal end for surface-to-surface contact with a spherical inner face of the respective inner roller while defining a gap around the cylindrical protrusion and between the spherical surface of the respective trunnion and the spherical inner face of the respective inner roller. The inner face of each inner roller may include a pair of guide grooves, preferably with an elliptical cross section, for receiving the spherical ends of the cylindrical protrusions. | 11-20-2008 |
20080311998 | Constant Velocity Joint and Method of Manufacturing the Same - A constant velocity joint, wherein all of those rolling elements excluding a plurality of rolling elements are divided into a plurality of rolling element groups and arranged along the inner diameter part of a roller member. The excluded plurality of rolling elements are dispersed in first to third cam grooves at intervals in the circumferential direction. When the rolling elements are pressed in the radial outer direction by the first to third pressing faces of a cam rotating in the arrow A direction, they are simultaneously press-fitted into first to third clearances between the rolling elements from the side of the inner diameter part of the roller member. | 12-18-2008 |
20090069100 | Joint Assembly, A Wheel Bearing Apparatus, And The Assemblies Included In An Axle Module - A joint assembly has a pair of constant velocity universal joints and a connecting drive shaft. A cover unit protects the constant velocity universal joints and prevents hanging down of the joints under their own weight. The unit cover is arranged to cover the outer circumferential surfaces of the pair of constant velocity universal joints and boots. The unit cover is formed from elastomer material by injection molding. The cover unit inner circumferential surface has a configuration corresponding to the outline configurations of the pair of constant velocity universal joints and the boots. | 03-12-2009 |
20090137325 | CONSTANT VELOCITY UNIVERSAL JOINT - A constant velocity universal joint is provided, having a hollow outer joint member, an inner joint member, an outer roller including a cylindrical surface, an inner roller including a concave sphere, and plural leg shafts each including a convex sphere formed in a tip portion and engaging with the concave sphere, where the cylindrical surface of the outer roller satisfies the following: | 05-28-2009 |
20090143149 | Constant Velocity Joint of Tripod Type - A constant velocity joint for a drive system with a first rotating shaft and a second rotating shaft, comprises: a hollow housing having a plurality of guide grooves therein, the guide grooves extending in an axial direction of the housing and spaced equally apart in a circumferential direction of the housing; a tripod having a plurality of trunnions, each trunnion positioned in a corresponding one of the guide grooves of the hollow housing; and, a roller assembly including an inner roller, the inner roller having a spherical inner face for receiving a corresponding one of the trunnions therein, and an outer roller mounted on an outer face of each inner roller, the roller assembly for transmitting a load between the first and second rotating shafts to drive the driving system. Each trunnion includes two opposing spherical contact surfaces disposed in the directions subject to the load, and two opposing side surfaces disposed between the two opposing spherical contact surfaces and in the directions perpendicular to the spherical surfaces and not subjecting to the load. A cross sectional shape of the trunnion, the cross section taken in a direction perpendicular to the longitudinal axis of the trunnion, has a thickness at one or both lateral sides of the trunnion the same as or slightly less than a maximum non-interfering thickness of the trunnion, the maximum non-interfering thickness measured with the inner roller inclined by a predetermined degree relative to the longitudinal axis of the trunnion to assemble the trunnion into the inner roller. Preferably, a groove of circular or oval shape is formed on each of the two opposing spherical contact surfaces, the groove for retaining grease therein to lubricate contact surfaces between the inner roller and the trunnion. | 06-04-2009 |
20090197687 | CONSTANT VELOCITY UNIVERSAL JOINT - A constant velocity universal joint is provided, having a hollow outer joint member, an inner joint member, an outer roller including a cylindrical surface, an inner roller including a concave sphere, and plural leg shafts each including a convex sphere formed in a tip portion and engaging with the concave sphere, where the cylindrical surface of the outer roller satisfies the following: | 08-06-2009 |
20090312108 | CONSTANT VELOCITY JOINT OF TRIPOD TYPE - A constant velocity joint for a drive system with a first rotating shaft and a second rotating shaft, comprises: a hollow housing having a plurality of guide grooves therein, the guide grooves extending in an axial direction of the housing and spaced equally apart in a circumferential direction of the housing; a tripod having a plurality of trunnions, each trunnion positioned in a corresponding one of the guide grooves of the hollow housing; and a roller assembly disposed on each trunnion, the roller assembly including an outer roller for rollably receiving in the corresponding guide groove; wherein the outer roller includes a convex outer surface, the convex outer surface having a first radius (Rry) seen from a cross section taken in an orthogonal direction relative to a central axis of the outer roller, the convex outer surface having a second radius (Rrx) seen from a cross section taken along the central axis of the outer roller, a center of the second radius (Rrx) displaced outwardly from a center of the first radius (Rry), and the second radius (Rrx) being shorter than the first radius (Rry). Each of the guide grooves of the housing includes a concave surface for mating with the convex outer surface of the outer roller, and the guide groove further includes a plurality of recess areas respectively recessed from the concave surface of the groove, and thereby defining widened spaces between the guide groove of the housing and its corresponding upper and lower portions of the convex outer roller. | 12-17-2009 |
20100022314 | HOMOKINETIC JOINT - The disclosure relates to a homokinetic joint that comprises a male member with several arms, a female member for receiving the male member, a roller mounted and freely rotating on each arm, a spring provided between the male member and the female member and for urging the male member away from the female member, and a cup provided between the spring and the male member. The cup includes a skirt comprising an outer surface designed to contact at least one of the rollers when the joint is in the separated state. | 01-28-2010 |
20100022315 | SLIDING-TYPE TRIPOD-SHAPED CONSTANT-VELOCITY UNIVERSAL JOINT - A sliding-type tripod-shaped constant-velocity universal joint that can reduce induced thrust force by preventing the tangent-point back-surface side of rollers from contacting with roller grooves in the case where the rollers and the roller grooves make an angular contact at two locations. An outer peripheral surface of the rollers makes an angular contact with respect to the roller grooves at two locations, and an inner peripheral surface of the rollers is formed as a convex-shaped curve that is directed to the inner side in an axially cross section of the rollers. And, the rollers are made swingable with respect to tripod-shaft portions. | 01-28-2010 |
20100022316 | UNIVERSAL JOINT - A pod type universal joint is disclosed in which a roller assembly ( | 01-28-2010 |
20100029393 | TRIPOD CONSTANT-VELOCITY JOINT - A needle bearing functioning as a rolling element comprises a uniform-diameter body part and bottom surfaces shaped in flat surfaces. A tapered reduced-diameter part and a chamfered part are interposed between the body part and the bottom surface. A gentle reduction in diameter is first made by the tapered reduced-diameter part, and then a relatively sharp reduction in diameter is made by the chamfered part. Consequently, in the needle bearings adjacent to each other, their tapered reduced-diameter parts are separated from each other. | 02-04-2010 |
20100093452 | Constant Velocity Joint - A constant velocity joint may include a roller including a roller body and a bearing receiving portion formed on one lateral side of the roller body, wherein the roller is guided and moved on a track of the constant velocity joint, and a bearing mounted in the bearing receiving portion and a portion of which protrudes outside the one lateral side of the roller in rotation axis direction of the roller, wherein the bearing is guided and moved in the bearing receiving portion of the roller. | 04-15-2010 |
20100160051 | SLIDING-TYPE TRIPOD CONSTANT VELOCITY JOINT - An intermediate member is rockably provided around an outer periphery of a corresponding one of tripod shaft portions. Shaft-like rolling elements are retained by corresponding retainers so that the shaft-like rolling elements are able to circulate around the corresponding intermediate members and are able to roll between side surfaces of a corresponding one of raceway grooves of an outer ring and a torque transmitting surface of a corresponding one of the intermediate members. Then, raceway recesses are formed on the side surfaces of each raceway groove so as to extend in a direction of a rotation axis of the outer ring. The shaft-like rolling elements are fitted in the corresponding raceway recesses and are able to roll along bottom surfaces of the respective raceway recesses. Thus, the retainers are arranged outside the raceway recesses. | 06-24-2010 |
20100210367 | Universal Joint - A tripot universal joint includes a first rotatable shaft member having a first longitudinal axis and three longitudinal guide channels disposed parallel to the first longitudinal axis, each having two opposing concave side surfaces and a back surface. The joint also includes a rotatable second shaft member having a second longitudinal axis and comprising a spider having three radially extending trunnions equally, each of the trunnions having a convex outer surface disposed within an associated longitudinal guide channel. The joint further includes three rotatable rollers, each rotatably disposed on a convex outer surface of a respective trunnion, each roller having a convex outer surface that is configured for disposition within the concave side surfaces of the longitudinal guide channel with which it is associated for moveable engagement within the channel and an inner surface that is rotatably disposed on the convex surface of the trunnion. | 08-19-2010 |
20100216556 | Constant Velocity Joint Having Over-Articulation Protection - A tripot universal joint includes a first rotatable shaft member having a longitudinal axis and three longitudinal guide channels, each having two opposing concave side surfaces and a back surface. The joint also includes a rotatable second shaft member having a longitudinal axis and comprising a spider having three radially extending trunnions equally, each of the trunnions having a convex outer surface disposed within an associated longitudinal guide channel. The joint further includes three rotatable ball assemblies, each disposed on a convex outer surface of a trunnion, each ball assembly having an outer ball with a convex outer surface that is disposed within the concave side surfaces of the longitudinal guide channel with which it is associated for moveable engagement within the channel and an inner ball with an inner surface that is rotatably disposed on the convex surface of the trunnion with a detachably reattachable coupling. | 08-26-2010 |
20100248847 | SLIDING-TYPE TRIPOD-SHAPED CONSTANT-VELOCITY UNIVERSAL JOINT - A sliding-type tripod-shaped constant-velocity universal joint capable of being downsized while reducing induced thrust force. The constant-velocity universal joint includes: an outer race; a tripod including a boss portion and three tripod-shaft portions being inserted into roller grooves; and rollers. And, a shaft-axis-wise width of the tripod-shaft portions is formed smaller as it goes from the root side to the leading-end side in a torque transmission region of the tripod-shaft portions. Further, a torque-transmission-wise width of the tripod-shaft portions is formed greater as it goes from the root side to the leading-end side in the torque transmission region when defining a direction that intersects with the shaft axis and the tripod-shaft portions orthogonally as a torque transmission direction. | 09-30-2010 |
20100273561 | TRIPOD-SHAPED CONSTANT-VELOCITY UNIVERSAL JOINT - A tripod-shaped constant-velocity universal joint which makes downsizing feasible while reducing induced thrust force. A shaft-axis-wise width “bx” of the tripod-shaft portions of a tripod-shaped constant-velocity universal joint (i.e., a width of the tripod-shaft portions in a case where they are viewed from the torque transmission direction) is formed smaller as it goes from the root side to the leading-end side in the torque transmission region. | 10-28-2010 |
20110021277 | Articulation Stop - A joint apparatus includes an outer joint portion having an opening end, an outer joint axis, and an outer joint inside surface defining, at least in part, an internal vault. The joint apparatus also includes an inner joint portion including a spider interposed within the outer joint portion and a shaft extending through the opening end. The spider includes a trunnion. The trunnion is at least partially interposed within the vault. The shaft defines a shaft axis. The inner joint portion includes an angular range of motion limiting device that selectively restricts the articulation of the shaft relative to the outer joint to prevent the shaft from contacting the outer joint. | 01-27-2011 |
20110092298 | SLIDING TYPE TRIPOD CONSTANT VELOCITY JOINT - A sliding type tripod constant velocity joint includes a pair of intermediate members arranged so as to sandwich a tripod shaft part from both sides of side surfaces of a raceway groove of an outer ring and provided so as to be oscillated relative to the tripod shaft part. The sliding type tripod constant velocity joint further includes a plurality of rolling elements provided between side surfaces of the raceway groove and power transmission surfaces of the intermediate members opposing the side surfaces of the raceway grooves and a cage that supports the rolling elements such that the rolling elements circulate on outer peripheries of the intermediate members. | 04-21-2011 |
20110130211 | TRIPOD-TYPE CONSTANT-VELOCITY UNIVERSAL JOINT AND METHOD OF MANUFACTURING THE SAME - Provided are a tripod-type constant-velocity universal joint which is capable of reducing weight of a journal raw profile to thereby reduce the number of manufacturing steps and in which forging of journals is facilitated, and a method of manufacturing the same. A leading end corner portion ( | 06-02-2011 |
20110159969 | TRIPOD TYPE CONSTANT VELOCITY JOINT - A tripod type constant velocity joint comprises a housing having three track grooves defined at trisected positions of the housing and extending in an axial direction, and a spider having three trunnions projectedly formed at trisected positions of the spider to be respectively inserted into the track, each trunnion having at least two polygonal surfaces at each of two opposing sides subjecting to a load. Inner rollers each has an inner surface of a concavely curved contour for receiving a corresponding trunnion therein, and an outer is mounted to each inner roller with a plurality of needle rollers engaged therebetween. | 06-30-2011 |
20110224004 | FORGING METHOD, CLOSED FORGING MOLD AND TRIPOD UNIFORM MOTION UNIVERSAL JOINT - Provided are a forging method and a full-enclosed forging die which contribute to alleviation of an enclosing force applied to dies and in which a relatively small enclosing apparatus can be used even with respect to larger-sized products. Further, provided is a tripod type constant velocity universal joint using a tripod member molded with such a full-enclosed forging die. Using a full-enclosed forging die including openable/closable dies ( | 09-15-2011 |
20110224005 | FORGING METHOD, MOLDING DEVICE FOR FORGINGS, AND TRIPOD UNIFORM MOTION UNIVERSAL JOINT - Provided are a forging method, a forged-product molding apparatus, and a tripod type constant velocity universal joint which contribute to reduction of shear drop and avoidance of an increase in processing load generated through contact of a leading end surface of a shaft portion and dies even when an excessively-heavy raw material is mixed so that a life of the die can be prolonged. After molding a product-to-be-preliminarily-molded to form a preliminarily molded product ( | 09-15-2011 |
20120021842 | TRIPOD TYPE CONSTANT-VELOCITY UNIVERSAL JOINT AND METHOD FOR PRODUCING THE SAME - Provided is a manufacturing method for a tripod type constant velocity universal joint including: an outer joint member having an inner peripheral surface provided with: three track grooves extending in an axial direction; and roller-guide surfaces extending in the axial direction on both sides of each of the three track grooves; a tripod member including three journals each projected into a radial direction; and a roller unit supported rotatably around each of the three journals of the tripod member and inserted rollably in each of the three track grooves of the outer joint member, the manufacturing method including, when forging a raw-shaped material corresponding to each of the three journals into a journal shape with use of a molding surface of a die, under a state in which a relief portion is provided on a raw-shaped-material-leading-end-side of the die, molding an outer peripheral surface of the raw-shaped material into a projected round shape with use of a tapered surface formed on the molding surface with which the outer peripheral surface of the raw-shaped material is held in contact and a recessed round surface formed between the molding surface and the tapered surface. | 01-26-2012 |
20120034982 | CV JOINT WITH IMPROVED ASSEMBLY PROPERTIES - The invention shows a constant velocity pivot joint with an outer joint part ( | 02-09-2012 |
20120040764 | CV JOINT WITH IMPROVED ASSEMBLY PROPERTIES - The invention shows a constant velocity pivot joint with an outer joint part ( | 02-16-2012 |
20120071249 | TRIPOD CONSTANT VELOCITY JOINT, AND METHOD AND DEVICE FOR ASSEMBLING SAME - Provided are a tripod constant velocity joint, and a method and a device for assembling the joint. The opening of a through-hole formed in an inner member of the tripod constant velocity joint has formed therein a tapered, reduced diameter section having a diameter tapered from the opening toward the inside. A first annular groove is formed in the side wall of a driving power transmission shaft, and a clip serving as an engaging member is engaged with the first annular groove. A second annular groove is formed in the inner wall of the through-hole in the inner member. In inserting the driving power transmission shaft through the through-hole in the inner member, the tapered, reduced diameter section guides the shaft in such a manner that the clip is contracted toward the bottom surface of the first annular groove. The clip expands and contracts due to the elasticity thereof when the positions of the first annular groove and the second annular groove coincide with each other. | 03-22-2012 |
20120142438 | Constant Velocity Joint of Tripod Type - A constant velocity joint comprises: a hollow housing having a plurality of axially-extending guide grooves; a tripod having a plurality of trunnions positioned in the guide grooves of the hollow housing; and a roller assembly including an inner roller having a spherical inner face and an outer roller mounted on an outer face of each inner roller, the roller assembly for transmitting a load between the first and second rotating shafts. A cross sectional shape of the trunnion, taken in a direction perpendicular to the longitudinal axis of the trunnion, has a thickness at one or both lateral sides of the trunnion the same as or slightly less than a maximum non-interfering thickness of the trunnion, the maximum non-interfering thickness measured with the inner roller inclined by a predetermined degree relative to the longitudinal axis of the trunnion to assemble the trunnion into the inner roller. | 06-07-2012 |
20120149478 | Constant Velocity Joint of Tripod Type - A constant velocity joint comprises: a hollow housing having a plurality of guide grooves; a tripod having a plurality of trunnions positioned in the guide grooves; and a roller assembly disposed on each trunnion. The outer roller includes a convex outer surface, the convex outer surface having a first radius (Rry) seen from a cross section taken in an orthogonal direction of the outer roller, the convex outer surface having a second radius (Rrx) seen from a cross section taken along the central axis of the outer roller, in which the center of the second radius (Rrx) is displaced outwardly from the center of the first radius (Rry), and the second radius (Rrx) is shorter than the first radius (Rry). | 06-14-2012 |
20120157215 | HIGH JOINT ANGLE TRIPOD CONSTANT VELOCITY JOINT - Provided is a high joint angle tripod type constant velocity joint, which can increase a maximum joint angle amount and can make an outer roller have a relatively small width by forming a protrusion on a circumferential outer surface at a top end of an inner roller, thereby maximizing a vertical movement range of the inner roller while preventing the outer roller from being released, and which can reduce the manufacturing cost by reducing the number of components. | 06-21-2012 |
20120157216 | SLIDING TYPE TRIPOD CONSTANT VELOCITY JOINT - A sliding-type tripod constant velocity joint that includes needle units, each of which is able to prevent rolling elements from falling off in a state where the rolling elements are introduced in a cage, is provided. Each cage ( | 06-21-2012 |
20120202606 | TRIPOD CONSTANT VELOCITY JOINT - A constant velocity joint for a drive system comprises: a tripod housing coupled to the first rotating shaft and having a plurality of guide grooves therein, each guide groove extending in an axial direction of the tripod housing; a spider coupled to the second rotating shaft and having a plurality of trunnions, each trunnion positioned in a corresponding guide groove of the tripod housing; and a spherical roller disposed between the trunnion and the guide groove of the tripod housing, and a plurality of needle rollers disposed between the trunnion and spherical roller. Each spherical roller is in angular contact with the guide groove of the tripod housing with two contact points displaced relative to a pitch circle diameter line of the tripod housing. The ratio of the length (CL) between two contact points of tripod housing groove to the length (SL) between two edges of spherical roller is between 0.5 and 0.85, and the ratio of the radius (TGR | 08-09-2012 |
20120252589 | CONSTANT VELOCITY JOINT - A constant velocity joint includes a cylindrical outer cup which has three guide grooves on an inner wall surface thereof, and an inner member which is housed inside of the aforementioned outer cup and has three trunnions. The aforementioned guide grooves are formed to have a large width and to be close to the center of the aforementioned outer cup, and the aforementioned trunnions are formed to have a large width corresponding to the aforementioned guide grooves. Further, annular rollers are mounted on the periphery of the trunnions, and the periphery surfaces of the aforementioned rollers contact rolling surfaces of the aforementioned guide grooves. | 10-04-2012 |
20120258807 | SLIDING TYPE TRIPOD CONSTANT VELOCITY JOINT - A sliding type tripod constant velocity joint includes an outer ring of a tubular form having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and a pair of intermediate members which are arranged so as to sandwich a corresponding one of the tripod shaft parts from both sides of side surfaces of the raceway grooves and which are provided so as to be oscillated relative to the corresponding one of the tripod shaft parts. | 10-11-2012 |
20120264526 | SLIDING TYPE TRIPOD CONSTANT VELOCITY JOINT - A sliding type tripod constant velocity joint includes an outer ring of a tubular form having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and an intermediate member which is provided on an outer periphery of a corresponding one of the tripod shaft parts so as to be oscillated relative to the corresponding one of the tripod shaft parts and which has power transmission surfaces on both side surfaces and opposing the side surfaces of a corresponding one of the raceway grooves. | 10-18-2012 |
20120270666 | SLIDING TYPE TRIPOD CONSTANT VELOCITY JOINT - A sliding type tripod constant velocity joint includes an outer ring having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and an intermediate member which is provided on an outer periphery of a corresponding one of the tripod shaft parts so as to be oscillated relative to the corresponding one of the tripod shaft parts and which has power transmission surfaces on outer surfaces and opposing the side surfaces of a corresponding one of the raceway grooves. | 10-25-2012 |
20120302360 | SLIDING-TYPE TRIPOD CONSTANT VELOCITY JOINT - In a sliding-type tripod constant velocity joint establishing angular contact between each raceway groove of an outer ring and each roller, the section shape in a radial direction of each raceway groove is formed to an arc shape made by a first curvature radius centered at a first position. Longitudinal section shapes of first and second contact regions on the roller are formed to respective convex curves made respectively by second and third curvature radii which are respectively centered at a second position differing from the first position and a third position differing from the first position and the second position and which are smaller than the first curvature radius. A longitudinal section shape between the first contact region and the second contact region of the roller has a gap relative to the raceway groove. | 11-29-2012 |
20120329564 | TRIPOD CONSTANT VELOCITY UNIVERSAL JOINT - A tripod constant velocity universal joint is configured with only three parts including an outer ring ( | 12-27-2012 |
20130116055 | CONSTANT-VELOCITY TRIPOD JOINT - A constant-velocity tripod joint having an outer joint part having a central cavity and three recesses extending out therefrom. Two axially parallel slideways are disposed in mutual parallel opposition around the inner periphery. An inner joint part within the cavity of the outer joint part, and three trunnions having a spherical outer contour configured so as to be uniformly distributed around the inner periphery and to each extend radially into one of the recesses of the outer joint part. Each of three tripod rollers have an inner roller ring, an outer roller ring, and a plurality of cylindrical rolling bodies disposed annularly between the roller rings the respective inner roller rings being disposed, in each case by the inner wall thereof, in sliding contact with the outer contour of the associated trunnion; and the respective outer roller rings being disposed, in sliding contact with the slideways of the associated recess. | 05-09-2013 |
20130296063 | SLIDING TYPE TRIPOD CONSTANT VELOCITY JOINT - A sliding type tripod constant velocity joint includes a cage that supports the rolling elements such that the rolling elements circulate on an outer periphery of the intermediate member. The cage includes the first, second, third and fourth circulating paths having opening parts over an entire length in an outer peripheral side of the cage and widths of the opening parts of the third and fourth circulating paths are narrower than widths of the opening parts of the first and second circulating paths. | 11-07-2013 |
20140135133 | CONSTANT VELOCITY JOINT - A constant velocity joint includes a constant velocity joint housing with guide grooves on the inner side of the housing, a spider disposed in the constant velocity joint housing, combined with a shaft, and having a spider journal, and spherical rollers disposed in the guide grooves of the constant velocity joint housing. Needle bearings are disposed between the spherical rollers and the spider journals, in which a plurality of needle bearing insert holes is formed in the spherical rollers, and disposed in the needle bearing insert holes. | 05-15-2014 |
20140141893 | CONSTANT VELOCITY JOINT - The constant velocity joint consists of the input shaft ( | 05-22-2014 |
20140187337 | TRIPOD JOINT - The present invention discloses a tripod joint including: a housing having one or more radially positioned track grooves; a spider having one or more radially positioned trunnions protruding from the outer circumferential surface of the spider, the one or more radially positioned trunnions disposed within the one or more radially positioned track grooves of the housing, wherein the spider is configured to move in the axial direction of the housing one or more rollers disposed on the one or more radially positioned trunnions, the one or more rollers in contact with the inner circumferential surface of the one or more track grooves of the housing; and a lubricating mechanism configured to supply oil to the trunnions and the rollers. | 07-03-2014 |
20140206460 | COUPLING DEVICE, AND HOME AUTOMATION EQUIPMENT INCLUDING SUCH A DEVICE - The invention relates to a coupling device ( | 07-24-2014 |
20140221107 | DOUBLE-ROLLER-TYPE TRIPOD CONSTANT-VELOCITY JOINT - One end face of an outer roller is provided with an annular rib that protrudes radially inward and that retains an inner roller and rolling elements. The other end face-side portion of the outer roller is provided with an inner component retaining portion that retains the inner roller and the rolling elements. In a roller unit in which the inner roller and the rolling elements are retained in the outer roller by the rib and the inner component retaining portion, an inner peripheral face of the inner roller through which a tripod shaft portion is passed is provided with a tripod shaft portion insertion restricting portion that allows the tripod shaft portion to be passed through the inner roller only from an end face side of the roller unit, on which the rib of the outer roller is not provided. | 08-07-2014 |
20140287841 | TRIPOD TYPE CONSTANT VELOCITY UNIVERSAL JOINT AND METHOD FOR PRODUCING SAME - A tripod type constant velocity universal joint includes an outer joint member including three track grooves having roller-guide surfaces arranged to face each other in a circumferential direction, a tripod member including three leg shafts projecting in a radial direction, and roller units each including a roller and an inner ring for supporting the roller in a freely rotatable manner. The inner ring is externally fitted to corresponding one of the three leg shafts. The roller is movable along the roller-guide surfaces of corresponding one of the three track grooves. Each of the three leg shafts includes a region formed into a substantially circular-arc shape in horizontal cross-section that is orthogonal to an axial line of the each of the three leg shafts. | 09-25-2014 |
20140309043 | TRIPOD JOINT HAVING LOW VIBRATION INDUCING FORCES - The invention relates to a tripod joint ( | 10-16-2014 |
20150024855 | TRIPOD CONSTANT VELOCITY JOINT AND METHOD OF PRODUCING THE SAME - A roller includes: an outer peripheral rolling contact surface which is shaped by a simultaneous process in a state where end faces of a plurality of rollers are in contact with each other; and a protrusion which is axially protruded further than an axial end of the outer peripheral rolling contact surface. The protrusion has a protruded end face which, when the outer peripheral rolling contact surface is ground, is in contact with the end face of one of the rollers which are adjacent to each other, and forms an axial gap between ends of the outer peripheral rolling contact surfaces of the rollers which are adjacent to each other, in a state where the protruded end face is in contact with the end face. The protrusion further has a gap with respect to a tool when the outer peripheral rolling contact surface is processed. | 01-22-2015 |
20150038244 | FORGING METHOD, MOLDING DEVICE FOR FORGINGS, AND TRIPOD UNIFORM MOTION UNIVERSAL JOINT - After molding a product-to-be-preliminarily-molded to form a preliminarily molded product as a material, the preliminarily molded product is put into a full-enclosed forging die so that a product is molded with the full-enclosed forging die. On a preliminary leading-end surface to be formed as a leading end surface of a shaft portion of the product formed of the preliminarily molded product, there is formed a shear-drop suppressing portion for suppressing thickness reduction on a boss-portion side of an outer peripheral portion of the leading end surface of the shaft portion of the product. At a time of putting the preliminarily molded product into the full-enclosed forging die so as to mold the product, a relief portion is formed between the leading end surface of the shaft portion to be formed and a cavity of the full-enclosed forging die. | 02-05-2015 |
20150105164 | MOUNTING STRUCTURE OF DRIVE-SHAFT - A mounting structure of a drive-shaft includes: a shaft; a housing; a spring guide slidably disposed inside the housing having one end facing the shaft; and a spring with one end supported by a spring guide and the other end supported by the housing, in which a transmission has a companion flange with a cup-shaped coupling portion at an end, so when the housing enters the coupling portion, an elastic force of the spring biases the housing into the coupling portion. Since a fixing bolt is not used, it is possible to quickly assemble and disassemble the drive-shaft in maintenance. | 04-16-2015 |
20150119152 | ROLLING BOOT WITH TRANSITION REGION - A rolling boot comprises a first fastening region for fastening the boot to a joint casing, a second fastening region for fastening the boot to a shaft, and a fold region between the first and the second fastening region with a first fold near to the first fastening region and a second fold near to the second fastening region. The boot further comprises, between the first fastening region and the first fold, a first transition region comprising a first flange neighbouring the first fastening region with a bottom. A ratio between a first minimal diameter D | 04-30-2015 |
20160032984 | TRIPOD CONSTANT VELOCITY JOINT - A tripod constant velocity joint includes, an outer race, a tripod, an inside member, a plurality of rolling elements, and a holding member. The inside member includes a fitted part having a non-cylindrical outer peripheral surface, the holding member includes a fitting part that has a non-cylindrical inner peripheral surface and is fitted to the fitted part, and the holding member is unable to rotate relative to the inside member as the fitted part and the fitting part are fitted to each other. | 02-04-2016 |
20160084319 | CONSTANT-VELOCITY JOINT - In a constant-velocity joint, an inner member thereof includes holders that serve to retain respective roller assemblies. When each of the holders is hypothetically divided into three equal parts made up of a proximal end portion, an intermediate portion, and a distal end portion from a side of an annular member, an inner wall surface of an inner roller of the roller assembly contacts only a side wall surface of the proximal end portion. The inner roller preferably has an inside diameter, which is minimum at a contact point that contacts the side wall surface of the proximal end portion. More specifically, the inside diameter of the inner roller gradually expands in diameter from the contact point to a side that faces toward the annular member, and further, gradually expands in diameter from the contact point to a side that faces toward the distal end portion. | 03-24-2016 |
20160102714 | TRIPOD TYPE CONSTANT-VELOCITY JOINT - A tripod type constant-velocity joint is provided through which a driving shaft is coupled to a driven shaft. The joint includes two outer rings connected to the driving shaft and the driven shaft, respectively, and a tripod member through which the outer rings are coupled together. Each of the outer rings has an inner periphery formed with three axially extending track grooves arranged at angular intervals of 120 degrees. The tripod member has two axial ends each formed with three protrusions axially slidably received in the respective track grooves of the corresponding one of the outer rings, whereby torque around an axis is transmitted between the respective outer rings and the tripod member. The joint can thus cope with a larger angle and/or offset between the axis of the driving shaft and the axis of the driven shaft. | 04-14-2016 |
20160123403 | TRIPOT CONSTANT VELOCITY JOINT - A tripot constant velocity joint includes a housing defining a guide channel. A spider member is received within the housing and includes a trunnion having a functional outer surface with a convex profile defined by a first principal radius of curvature and a second principal radius of curvature different from the first principal radius of curvature. A first inner surface of a first ball member engages the functional outer surface of the trunnion. A first outer surface of the first ball member is provided with a non-symmetric piecewise continuous profile that engages the first sidewall. | 05-05-2016 |
20160138658 | INNER JOINT PART AND ROLLER ELEMENT OF A TRIPOD CONSTANT VELOCITY JOINT - An inner joint part of a tripod constant velocity joint comprises a hub having an axis of rotation. Three projections extend radially outwardly. There is an adjoining transition region and a bearing region. A spherical circumferential surface of each projection forms a first surface line extending in a first plane. A resulting inner sphere contacts opposite points of the first surface line extending at least in first angle ranges adjacent to a respective point outside the inner sphere. A second surface line in a second plane touches the inner sphere at touch points only at the height of the largest diameter of the projection and extends at least in second angle ranges adjacent to the respective touch point within the inner sphere. A roller element has a convex inner circumferential surface, an extension line forming a radius having a maximum magnitude in a central region, less in an adjacent region. | 05-19-2016 |
20160195141 | PARALLEL LINK MECHANISM, CONSTANT VELOCITY UNIVERSAL JOINT, AND LINK ACTUATOR | 07-07-2016 |
20160201731 | SLIDING CONSTANT-VELOCITY JOINT | 07-14-2016 |