| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Planetary traction drive transmission | US09627675 | 2000-07-28 | US06406399B1 | 2002-06-18 | Xiaolan Ai |
| A planetary traction drive transmission has a sun roller provided with two inner raceways which are presented outwardly and taper downwardly away from each other. It also has two outer rings located within a housing, with the rings surrounding the sun roller and having tapered raceways presented inwardly toward the tapered raceways of the sun roller. In addition the transmission has planet rollers which are organized in two rows, there being a separate row within each ring. The rollers have tapered side faces along which they contact the raceways of the sun roller and the rings. They are also organized in pairs, with a roller of each row forming a pair. The rollers of a pair contact each other at beveled end faces on the rollers, and thus each roller of the pair serves to back and axially position the other roller of the pair. At all lines of contact between the rollers and the raceways and between the rollers themselves pure rolling contact, characterized by the absence of spinning, exists. In one embodiment the raceways of the sun roller are locked together and relative rotation occurs between the outer rings. In another embodiment the outer rings are locked together and relative rotation occurs between the raceways of the sun roller. Each embodiment provides high speed and torque ratios in a very compact package. | ||||||
| 182 | Backlash-free gear | US09475284 | 1999-12-30 | US06344009B1 | 2002-02-05 | Walter Wirz |
| The gear consists of a housing (12) to which a drive motor (10) is flanged. Its shaft (1) carries a sun wheel (2) on which multiple planets (3) roll off. The planets (3) are positioned on a planetary carrier (6) which is rigidly connected to the output shaft (9). The shaft (9) is supported in the housing (12) coaxial to the shaft (1). Mounted to the housing (12) is a flange (17) of a cup-shaped annular wheel (8). Its lower rim (16) has a running surface (7) inside, on which the planets (3) roll off. The diameter of the running surface (7) is smaller than the sum of the diameter of the sun wheel (2) and twice the diameter of the planets (3), so that the rim (16) is elastically deformed. The planets (3) are supported rigidly in the circumferential direction and flexibly in the radial direction on the planetary carrier (6). Through this implementation, a backlash-free, rotationally very rigid gear is obtained with which high torques can be transferred in smooth operation. | ||||||
| 183 | Traction drive speed reducer, conveyance apparatus using traction drive speed reducer, and arrangement of two-axis output encoder in conveyance apparatus | US09901859 | 2001-07-10 | US20020002869A1 | 2002-01-10 | Hiroki Mori; Tetsuya Watanabe; Chohei Okuno; Takahiro Maekawa |
| A traction drive speed reducer which comprises circumscribed axes 20A and 20B, a plurality of intermediate axes 30A and 30B arranged contacting around the outer periphery of the circumscribed axes, and inscribed cylinders 40A and 40B inscribing the outer periphery of the intermediate axes, and in which a supporting member 10 to rotatably support the intermediate axes is fixed, a drive motor is connected to at least one of the plurality of intermediate axes, and an output is taken from the circumscribed axis having the larger diameter than the outer diameter of the intermediate axis. | ||||||
| 184 | Traction drive type driving apparatus | US09667540 | 2000-09-22 | US06296591B1 | 2001-10-02 | Hong You Wang |
| A traction drive type driving apparatus is provided, by which any particular pressing mechanism is unnecessary, by which a big deformation can be obtained easily, in which decreasing degree of the pressing load is extremely small against small amount of abrasion, in which the test for confirming the pressing load at a desired amount can be done easily, and which has a readily constructible hollow structure. The traction drive type driving apparatus comprises an externally contacting shaft (2) located at the center, a plurality of intermediate shafts (1) equidistantly disposed around and externally contacting with the externally contacting shaft (2), and an internally contacting cylinder (3) internally contacting with the intermediate shafts (1), at least one of the intermediate shafts offset from the center is an input shaft, and the externally contacting shaft (2) is a ring-like hollow cylinder and is held by the intermediate shafts (1) to form a floating ring without disposing any particular bearing. | ||||||
| 185 | Traction drive type driving apparatus | US421296 | 1999-10-20 | US6162145A | 2000-12-19 | Hong You Wang |
| A traction drive type driving apparatus is provided, by which any particular pressing mechanism is unnecessary, by which a big deformation can be obtained easily, in which decreasing degree of the pressing load is extremely small against small amount of abrasion, in which the test for confirming the pressing load at a desired amount can be done easily, and which has a readily constructible hollow structure. The traction drive type driving apparatus comprises an externally contacting shaft (2) located at the center, a plurality of intermediate shafts (1) equidistantly disposed around and externally contacting with the externally contacting shaft (2), and an internally contacting cylinder (3) internally contacting with the intermediate shafts (1), at least one of the intermediate shafts offset from the center is an input shaft, and the externally contacting shaft (2) is a ring-like hollow cylinder and is held by the intermediate shafts (1) to form a floating ring without disposing any particular bearing. | ||||||
| 186 | Traction drive transmission | US250061 | 1999-02-12 | US6095940A | 2000-08-01 | Xiaolan Ai; Thomas J. Rybkoski |
| A planetary traction drive transmission has an inner shaft provided with two inner raceways which are presented outwardly and taper downwardly away from each other and an outer ring having two outer raceways which are presented inwardly, surround the inner raceways, and likewise taper downwardly away from each other. In addition, the transmission has tapered rollers arranged in two rows between the opposing inner and outer races. The rollers of each row are on apex and in line contact with the inner and outer raceways between which they are located. Moreover, they are arranged in pairs, with the rollers of each pair being generally aligned and backing each other. Indeed, at their large ends the rollers have conical end faces, and the rollers in each pair contact each other along those conical end faces, there being line contact here as well. In addition, the transmission has a roller carrier provided with axles which extend into the rollers, so that the rollers revolve about and are maintained in position by the axles. Pure rolling contact characterized by the absence of spinning exists between the rollers and the raceways and also between the large end faces of corresponding rollers in the two rows. | ||||||
| 187 | Traction drive | US510595 | 1995-08-03 | US5688201A | 1997-11-18 | Rao-Sheng Zhou |
| A traction drive of planetary configuration includes a cone, a pair of cups surrounding the cone, transfer rings located between the cone and the cups, and a cage that positions the transfer rings. The cone is unitary and has a pair of raceways which are presented outwardly and taper downwardly toward each other. The two cups have tapered raceways which are presented inwardly toward the cone raceway. The transfer rings on their peripheral surfaces are tapered and slightly crowned. The cage includes end disks which lie beyond the ends of the transfer rings and studs which connect the end disks and further serve as journals for the transfer rings, thus maintaining the rings at equal circumferential intervals. The two cups are held together, and springs, either at the rollers or along the cups, urge the tapered raceways of the cone and cups and the tapered peripheral surfaces of the transfer rings snugly together. The spring force is supplemented with an axial force derived from the torque transferred by the drive. Power may be applied at the cone or at the cups or at the cage, and may be delivered at either of the remaining two components. | ||||||
| 188 | Centrifugal planetary friction transmission | US38954 | 1993-03-29 | US5489244A | 1996-02-06 | Yue Zheng |
| A centrifugal planetary friction transmission comprising an input shaft, an output shaft, at least one planetary friction pulley set which is formed by three coaxially linked cylindrical external friction pulleys, and three internal pulleys. The friction forces acting on the planetary friction pulley set are mostly cancelled out by each other. According to the invention, the external friction pulleys only contact with the internal friction pulleys, and the normal pressure for producing the friction force for transmitting the torque is created by the centrifugal force of the external friction pulley set only and the transmission is a positive characteristic planetary transmission. | ||||||
| 189 | Rotary driving system and robot operating thereon | US695995 | 1991-05-06 | US5203748A | 1993-04-20 | Yasuhiro Sawada; Yusaku Azuma; Takeo Tanita; Yasuo Karube; Teiji Ohsaka |
| A planetary roller speed reducer includes a sun roller mounted rotatably on a pedestal and a plurality of planetary rollers having a central portion with a narrowed diameter and mounted rotatably on the pedestal. The sun roller circumscribes large-diameter portions of the planetary rollers which work as a first reduction part, and an outer ring working as an output shaft circumscribes a small-diameter portion working as a second reduction part. A rotary driving system comprises a support fixed to the pedestal and disposed within the outer ring on an extension of the sun roller, and a turning angle detector fixed to the outer ring detects a turning angle between the support and the outer ring. | ||||||
| 190 | Two-speed planetary friction accessory drive | US680452 | 1991-04-04 | US5122099A | 1992-06-16 | Stephen Boedo; Romas B. Spokas |
| A planetary friction roller drive (30, 66, 84, 26) adapted particularly for use in driving automotive accessories such as an alternator wherein provision is made for delivering engine torque to the ring roller element (26) of the planetary friction drive and for connecting drivably the sun roller element (30) of the friction drive to a driven accessory such as an alternator and wherein a torque flow path characterized by two speed ratios is effected by a compound planetary carrier assembly (50) as a preload at the friction drive contact locations between the planetary rollers (66, 84) and the ring roller element (30) and between the planetary rollers (66, 84) and the sun roller element (30) of the planetary assembly is established by a preload spring (134) actng in a tangential direction, the reaction torque for the planetary friction drive being established by a selectively engageable brake (136) acting on the sun roller element (30) thus effecting a ratio transition from unity. | ||||||
| 191 | Low friction traction drive assembly | US710242 | 1991-06-03 | US5085091A | 1992-02-04 | Juergen P. Stampa; Ronald T. Honda; James D. Hendry |
| Friction in a traction drive assembly having counter-rotating races interconnected by drive balls captured by a stationary retainer is substantially reduced, and the life of the assembly is substantially extended, by interposing rolling interface elements between the drive balls and the retainer. The interface elements may take the form of balls, pins or wheels, and separate lubricating means for them may be provided. | ||||||
| 192 | High ratio planetary type traction roller transmission | US488990 | 1990-03-05 | US5025671A | 1991-06-25 | Charles E. Kraus |
| In a traction roller transmission which has disposed in a housing two planetary type transmission structures each having traction rollers disposed between spaced concentric sun rollers and traction rings and supported by support members of which one which is associated with one of the transmission structures carries the sun of the other transmission structure and the other is connected to the transmission output shaft while the input shaft carries the sun of the one transmission structure (the planetary rollers are supported in an inclined position), and the traction rings are axially curved and forced toward one another so as to engage therebetween the planetary rollers which are supported at predetermined angles selected such that their engagement forces with the sun rollers and traction rings correspond to the torque to which they are subjected during operation. | ||||||
| 193 | Traction drive spindle device | US358093 | 1989-05-30 | US4960405A | 1990-10-02 | Eiichi Katayama; Kouichi Ueda; Hiroaki Takebayashi; Kazuo Rokkaku |
| A traction drive spindle device includes an input shaft connectable to a drive main shaft for rotation therewith. A hollow holder shaft is connected to an output end of the input shaft in coaxial relation thereto, the hollow holder shaft having a plurality of planetary rollers mounted thereon intermediate opposite ends of the holder shaft. A high-speed spindle is rotatably received in a bore of the hollow holder shaft, the high-speed spindle having an inner end portion which is received in the bore and serves as a sun shaft disposed in rolling contact with the planetary rollers. A housing is mounted on the outer periphery of the holder shaft through a first ball-and-roller bearing so as to be rotatable relative to the holder shaft, the housing having a fixed ring fixed to an inner periphery thereof. The planetary rollers are disposed in rolling contact with the fixed ring. A second ball-and-roller bearing is interposed between the holder shaft and the high-speed spindle. Only the balls and both the balls and the rollers of the second ball-and-roller bearing are made of ceramics. | ||||||
| 194 | Traction roller transmission | US115822 | 1987-11-02 | US4782723A | 1988-11-08 | Charles E. Kraus |
| In a planetary type traction roller transmission which comprises a sun, a traction ring and planetary traction rollers disposed in the space between, and in engagement with, the traction ring and the central sun all with somewhat conical traction surfaces so arranged that the tangential axial lines of the traction surfaces intersect in a point on the transmission axis there are provided engaging means for forcing the appropriate traction surfaces into firm engagement with one another but also means for limiting the engagement forces applied to the traction surfaces to a predetermined safe limit which is not exceeded no matter how strong the applied forces are. | ||||||
| 195 | Planetary transmission based on friction | US794580 | 1985-11-04 | US4691595A | 1987-09-08 | Ilmari Kinanen; Sulo Ranne |
| A friction planetary transmission has a sun roller planetary roller and an elastically deformable outer periphery. The planetary rollers are attached to shafts which have a limited amount of radial movement. The outer periphery deforms to exert a frictional contact pressure on the planetary rollers such that a torque can be transmitted. The torque is adjustable by a circular disk which fits inside the outer periphery to regulate the amount of deformation. The circular disk can be moved axially to adjust the torque. | ||||||
| 196 | Friction drive transmission | US412760 | 1982-08-30 | US4487090A | 1984-12-11 | Walter J. Burnham |
| A frictional drive transmission is provided with a plurality of drive rollers disposed within an annular path created between a shaft and a cylindrical inner surface of a case. The drive rollers are pivotally linked to pinions attached to a second shaft. A plurality of pinch rollers are urged between the drive rollers and the cylindrical inner surface of the case, forcing the drive rollers into frictional contact with the pinch rollers and the central shaft. Rotation of the shaft attached to the pinions, causes rotation of the pinch rollers and drive rollers, and therefore rotation of the central shaft. | ||||||
| 197 | Planetary gearing system | US381970 | 1982-05-25 | US4468985A | 1984-09-04 | Sven W. Nilsson |
| A planetary gearing system comprising a planet carrier and planet gear wheels and planet friction wheels supported on planet wheel shafts on said planet carrier, said planet gear wheels cooperating with a gear ring encircling them and a sun gear wheel, said planet friction wheel cooperating with a friction ring circumscribing them and with a sun friction wheel, a housing enclosing the planet gearing system, said friction ring or ring gear being radially movable relative to said housing and means for mounting said gear ring and/or friction ring 20 in said housing by means providing an adjustable friction force so that they rotate in the housing when subjected to a torque exceeding a torque determined by said friction force. | ||||||
| 198 | Traction roller transmission with predetermined transmission ratio | US329336 | 1981-12-10 | US4454788A | 1984-06-19 | Charles E. Kraus |
| In a traction roller transmission which has a sun roller centrally disposed within a traction ring with motion transmitting traction rollers arranged in an annular space between the sun roller and traction ring, one of the traction ring and sun roller structures includes wave spring rings so disposed between compressing means as to cause engagement of the spring rings with the traction rollers and engagement with the sun roller and traction ring structures for transmission of motion between the sun roller and traction ring structures. | ||||||
| 199 | Fixed ratio traction roller transmission with tapered loading means | US354371 | 1982-03-03 | US4440043A | 1984-04-03 | Charles E. Kraus |
| In a traction roller transmission in which traction rollers are rotatably supported in the annular space between concentric sun roller and traction ring structures, at least one of said sun roller and traction ring structures has a tapered support surface with a tightly wound coil spring having a tapered surface supported on said tapered support surface and an opposite cylindrical surface in engagement with said traction rollers and means are associated with said transmission for forcing the coil spring onto said tapered surface so as to cause firm engagement of the traction rollers with the sun roller and traction ring structures. | ||||||
| 200 | Frictional planetary transmission | US722697 | 1976-09-13 | US4126060A | 1978-11-21 | Arthur E. Rineer |
| A speed reducer (or increaser) has a group of planetary members with a major diameter bearing on a central annular member in rolling contact. The minor diameters of these members bear preferably on the inside surfaces of axially-spaced ring sections in rolling engagement on flared surfaces provided on either the ring sections of the planetary members, or both. The rolling engagement is under pressure generated preferably by urging one ring member axially in a direction to grip the planetary members between the ring sections and the central annular member as a result of change of the rolling position on the flared surfaces. An intermediate member is associated with the axis of the planetary members to provide peripheral spacing of the planetary members, and control of their position. | ||||||
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