Abstract: A cage of each of ball bearings arranged on respective outer peripheries of eccentric portions of a motor shaft has an annular base portion interposed between an inner ring and an outer ring and a plurality of partition wall portions for forming pockets together with the base portion. In a first ball bearing, part of the base portion protrudes axially outward from the inner raceway and forms an oil receiving portion that receives lubricating oil from the second rolling bearing side, at a portion around the rotation axis and axially outward of the first rolling bearing.

Abstract: An in-wheel motor drive unit (21) includes a motor portion A, a speed reduction portion B, and a wheel hub C. The speed reduction portion B includes outer pins (27) engaging with circumferences of curve plates (26a) and (26b) to generate rotation movements of the curved plates, and an outer pin holding portion (45) fixedly fitted in an inner diameter surface of a casing (22) holding the speed reduction portion B, to hold the outer pins (27) parallel to a rotation axis of a motor side rotation member (25). The outer pin holding portion (45) includes a cylindrical portion (46), a pair of ring portions (47) and (48) extending from axial both ends of the cylindrical portion (46) to radially inner side, and a pair of outer pin holding holes (47a) and (48a) provided at opposed positions of the pair of ring portions (47) and (48), and extending parallel to the rotation axis of the motor side rotation member (25) to hold the axial ends of the outer pin (27).

Abstract: A plane centric gear unit has a circumferentially floating ring gear 1. Both ends of the ring gear 1 are respectively fixed with cloth boards 3 equipped with hollow shaft sleeves 4; the reaction forces of the ring gear 1 and external gear 2 are equal and in opposite directions, and act on inner ring bearings 7 of the hollow shaft sleeves 4 on the same straight line; the outer ring bearings 8 of the hollow shaft sleeves 4 are unloaded, therefore the sum of the bearing reaction forces is reduced, the total transmission efficiency and power reaches above 97% and tens of thousands KW grade, the noises are lower, the gear surface contact pressure is about 1/10 of the external mesh pair, the gear surface contact life is increased by 1000 times than the external mesh pair, and the total weight is reduced by 2˜3 times.

Abstract: A reduction gear transmission capable of realizing a large reduction ratio while preventing both an increase in its diameter and a decrease in the diameter of its through hole, including: a motor gear; an intermediate shaft; a first and second gear; an input shaft; and an external and internal gear. The first and second gears are fixed to the intermediate shaft. The first gear meshes with the motor gear. The input shaft causes an eccentric rotation member to rotate eccentrically with the rotation of the input gear, which meshes with the second gear. The external gear engages the eccentric rotation member, revolving orbitally around an axis line of the input shaft. The internal gear meshes with the external gear, each having a different number of teeth. The motor gear and first gear mesh at a position offset from a straight line formed by connecting an axis line of the intermediate shaft and of the input shaft.

Abstract: There is provided a speed reducer incorporating portion structure for a plurality of industrial machines in which an eccentric oscillating type speed reducer having an internal gear and an external gear that rotates in an oscillating manner while internally meshing with the internal gear is incorporated. The speed reducer may be incorporated in the plurality of industrial machines, respectively, so that the position of a meshing portion when the external gear is assembled to the internal gear has a specific phase relationship common to the plurality of industrial machines with respect to a specific part of an industrial machine in which the speed reducer is incorporated.

Abstract: A Continuous Ambulatory Haemofiltration device consisting of an outer casing, multifunction pump, haemofilter, reversed osmosis filter, power source, drainage bag, blood lines and fluid lines. Haemofiltrate from the haemolfilter is moved to a reversed osmosis filter. Ultrafiltrate fluid from the reversed osmosis filter flows to an out-flow tube of the haemofilter venous line through a specific fluid line. The exit of the reversed osmosis filter is connected to a drainage bag. A multifunction pump moves blood from a permanent jugular catheter to the haemofilter, and fluids between the haemofilter, reversed osmosis filter, venous line and drainage bag. An electrode is placed at the in-flow tube of the haemofilter to measure incoming blood osmolality. An electrode is connected to a microprocessor that is further connected to a computer-controlled valve at an out-flow line of the reversed osmosis filter. A microprocessor is connected with a memory card.

Abstract: A joint driving apparatus for a robot comprises an oscillating internally meshing reduction mechanism, a center shaft member, a ring portion, and an oil seal disposed between the ring portion and the center shaft member. The oscillating internally meshing reduction mechanism is fixed to a first member and rotates the second member relatively with respect to the first member. An output member is arranged at the side of an external gear in an axial direction so as to output a relative rotation of an internal gear with the external gear. The center shaft member is fixed to the output member, and has a shaft portion extending up to the side opposite to the external gear in the axial direction of the output member. The ring portion is integrally formed with the first member and faces to the shaft portion of the center shaft member. The oil seal is disposed between the ring portion and the shaft portion.

Abstract: A reduction-transmission mechanism includes: an input member formed of an external gear that makes circular motion with an eccentric amount; a rotation force applying member formed of an internal gear that is in mesh with the input member; and output members that receive and output rotation force applied to the input member by the rotation force applying member, and that are passed through the respective pin insertion holes. Each of the output members is provided with a needle roller bearing at a portion that is able to contact an inner periphery, which defines a corresponding one of the through-holes, and the input member has third oil supply passages that extend from the center hole to the pin insertion holes, and lubricating oil is supplied to the needle roller bearings through the third oil supply passages by centrifugal force generated in accordance with rotation of the motor shaft.

Abstract: A speed reducer includes a ring gear having internal gear teeth, a revolving gear meshing with the ring gear, an eccentric cam relatively rotatably provided in a center of the revolving gear, a first rotating shaft in the eccentric cam, the first rotating shaft driving the revolving gear by rotating the eccentric cam, a through pin inserted into a through hole in the revolving gear, a second rotating shaft connected to the through pin and outputting rotation obtained by the rotation of the revolving gear, and an elastic section between the through hole and the through pin, the elastic section having a greater area of contact with the through pin than with the through hole.

Abstract: An in-wheel motor drive unit (21) comprises a casing (22), a motor part (A), a deceleration part (B), a wheel hub (31), and a wheel hub bearing (33) rotatably supporting the wheel hub (31) with respect to the casing (22). The wheel hub bearing (33) includes first and second outer track surfaces (33a) and (33b) provided on the inner diameter surface of the casing (22), a first inner track surface (33c) provided on the outer diameter surface of a wheel-side rotation member (30) and opposed to the first outer track surface (33a), a second inner track surface (33d) provided on the outer diameter surface of the wheel hub (31) and opposed to the second outer track surface (33b), and a plurality of rolling elements (33e) arranged between the outer track surfaces (33a) and (33b) and the inner track surfaces (33c) and (33d).

Abstract: A transmission mechanism with intermittent output movement includes an output shaft rotatably mounted to first and second cams and a sun gear mounted to the output shaft. A first rocker includes a first planet gear meshed with the sun gear and first and second rollers rotatably mounted on opposite sides of the first planet gear and respectively in contact with the first and second cams. A second rocker includes a second planet gear meshed with the sun gear. An end of a first connecting rod is mounted to the first rocker. An end of a second connecting rod is mounted to the second rocker. Two ends of a link are rotatably mounted to the other ends of the first and second connecting rods. A planet gear carrier is mounted to an input shaft coaxial to the input shaft and includes an end rotatably mounted to the first rocker.

Abstract: Adjustment fitting, in particular for a motor vehicle seat, having a first fitting part and having a second fitting part that is rotationally adjustable relative to the first fitting part about an axis of rotation, wherein the first fitting part has associated with it an outer wheel with internal teeth, in which wheel is inserted, in the manner of a wobble mechanism, an inner wheel with external teeth hat is associated with the second fitting part, and wherein the inner wheel forms a receiving space that is eccentric to the axis of rotation, and having an eccentric cam rotatably inserted in the eccentric receiving space, having a drive shaft for driving the eccentric cam. A central seal is placed in an axial gap between the two fitting parts.

Abstract: A vehicle has a motor-gear unit, a trailing wheel of the vehicle being connected the output shaft of the gear and an input shaft of the gear being connected to a motor. The gear has an outer wheel, an inner wheel and a traction means extending between the outer wheel and the inner wheel. A revolving transmitter is also provided which lifts the traction means off the outer periphery of the inner wheel and pushes it against the inner periphery of the outer wheel.

Abstract: A transmission utilizing a translating gear and links to provide a high speed ratio in a small, efficient package. A gear set has an input and an output, with a speed ratio between the input and the output. The gear set has one gear that rotates and that provides a circular path for another gear. The rotational gear is attached to the input or the output. The other gear is engaged with the rotational gear and translations on a circular path. The second gear is connected with linkages to the other of the input or the output which resembles a crankshaft FIG. 1 shows the fully assembled transmission.

Abstract: The present invention is structured by using one or both of an active wheel and a passive wheel being composed of an eccentric transmission wheel and being combined with a synchronous transmission belt for forming an eccentric wheel transmission wheel series, so that in the reciprocal treadle performed by the human's feet, when the feet input forces at different angles from the treadle shafts of the treadles to an active wheel shaft combined on the active wheel through cranks, the active wheel forms different transmission speed ratios relative to the passive wheel according to the treadle angle.

Abstract: Through holes are formed in a revolving gear which revolves while being engaged with a ring gear, and penetration pins which are configured to extract rotation of the revolving gear are inserted in the through holes. The ring gear and the revolving gear are divided into halves in the thickness direction. Two sheets of ring gears are biased to rotate in reverse directions.

Abstract: Through holes are formed in a revolving gear which revolves while being engaged with a ring gear, and penetration pins on which ring members of a circular ring shape are mounted outside are inserted in the through holes. Further, the ring member is mounted to the penetration pin through an elastic member.

Abstract: Through holes are formed in a revolving gear which revolves while being engaged with a ring gear, and penetration pins are inserted in the through holes. An elastic member having a circular ring shape, which is formed so that an inner diameter thereof can move with respect to an outer diameter thereof, is mounted to either an inner circumferential surface of the through hole or an outer circumferential surface of the penetration pin. Thus, the through hole and the penetration pin do not interfere with each other, and thus, it is possible to set a small clearance between the through hole and the penetration pin to such a degree, while preventing a speed reducer from being in a locked state due to interference. As a result, it is possible to suppress a backlash between the through hole and the penetration pin.

Abstract: Through holes are formed in a revolving gear which revolves while being engaged with a ring gear, and penetration pins for extracting rotation of the revolving gear are inserted in the through holes. The inner circumference of each through hole has a shape which becomes narrow toward its one end. A sliding member having a shape which becomes thin toward its one end is engaged with each penetration pin. The sliding member is biased in a tapered direction thereof by a biasing member to be in contact with the inner circumference of the through hole.

Abstract: A joint driving apparatus for a robot comprises an oscillating internally meshing reduction mechanism, a center shaft member, a ring portion, and an oil seal disposed between the ring portion and the center shaft member. The oscillating internally meshing reduction mechanism is fixed to a first member and rotates the second member relatively with respect to the first member. An output member is arranged at the side of an external gear in an axial direction so as to output a relative rotation of an internal gear with the external gear. The center shaft member is fixed to the output member, and has a shaft portion extending up to the side opposite to the external gear in the axial direction of the output member. The ring portion is integrally formed with the first member and faces to the shaft portion of the center shaft member. The oil seal is disposed between the ring portion and the shaft portion.

Abstract: An adjustment device for a vehicle component, in particular for the back rest of a vehicle seat, is proposed having a first fitting and a second fitting, wherein the relative position of the two fittings to one another can be changed by means of eccentric means, wherein a rotation of the eccentric means by means of a drive element is provided, wherein the adjustment device has a central element which is connected in a rotationally fixed fashion to the first fitting, wherein the drive element is provided mounted in an overlapping region by means of the central element.

Abstract: A speed changing apparatus for changing an input speed to an output either greatly slower or faster, the apparatus has a coaxial pair of ring gears that includes a large ring gear having a pitch diameter A and a small ring gear having a pitch diameter D. A coaxial pair of spur gears includes a large spur gear having a pitch diameter B and a small spur gear having a pitch diameter C. The large spur gear meshes with the large ring gear and the small spur gear meshes with the small ring. A carrier member is connected to one of the input and output shafts of the apparatus. Two gears of one of the two coaxial pairs being fixed together to operate epicyclically on the carrier. One gear of the other of the two coaxial pairs being fixed to the frame of the apparatus and the other gear being connected to the other of the input and output shafts. In the apparatus, the four gears satisfy the dimensional relationship of A=K+i, B=K, C=K?j and D=K+i?j.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a cycloidal gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: A planetary gear mechanism of the invention includes a housing, an input shaft that has an eccentric portion whose center lies on an eccentric axis, and is rotatable about the axis of input and output shafts relative to the housing, an oscillating face plate that eccentrically oscillates relative to the input shaft via the eccentric portion, and rotates about the eccentric axis, and an output shaft that is provided with a second internally toothed gear that internally contacts and meshes with a second externally toothed gear formed on the oscillating face plate, and is rotatable about the axis of the input and output shafts relative to the housing. The housing is formed with a first internally toothed gear that internally contacts and meshes with a first externally toothed gear formed on the oscillating face plate.

Abstract: The manufacturing process of a reduction gear box in which a rotation direction converting part and a reduction part are joined together is simplified by unitizing both the rotation direction converting part and the reduction part and by manufacturing the reduction gear box by assembling the rotation direction converting unit and the reduction unit. The rotation direction converting unit is provided with a first pedestal having a first flat face, an input shaft supported rotatably in the first pedestal, an intermediate shaft substantially orthogonal to the input shaft, a first gear that rotates integrally with the input shaft, and a second gear that engages with the first gear and rotates integrally with the intermediate shaft.

Abstract: A speed change gear includes: a housing that has internal gears having different inside diameters; and a plurality of change gear units that are respectively in mesh with the plurality of internal gears and that change the speed of rotation from an input shaft to an output shaft. Each of the change gear units includes a rotating member that has one of a pin protruding in a direction along an input/output axis and an insertion hole; an eccentric member that centers on an eccentric axis that is eccentric with respect to the input/output axis; and an oscillating member that oscillatingly rotates as the eccentric member rotates about the input/output axis.

Abstract: A gear reduction assembly may include an input shaft, a first spur gear, and a second spur gear. The first and second spur gears may be coupled to one another. At least one of the first spur gear and the second spur gear may be associated with the input shaft such that the input shaft drives at least one of the first and second spur gears. The gear reduction assembly may further include a first internal gear engaged with the first spur gear, a second internal gear engaged with the second spur gear, and a hub associated with the first internal gear The first and second internal gears have a first number of teeth and a second number of teeth, respectively, and the first number of teeth differs from the second number of teeth by from one to five teeth. The gear reduction assembly may be included in a winch.

Abstract: A fitting (10) for a vehicle seat, in particular for a motor vehicle seat, includes a first fitting part (11) on which a ring gear (17) is formed, a second fitting part (12) on which a gear (16) is formed, the gear meshing with the ring gear (17). The two fitting parts (11, 12) are in a transmission connection with each other. A rotatably supported rotating eccentric (27) drives a relative rolling motion of the gear (16) and of the ring gear (17) and is driven by a carrier forming a driver (21). A bearing (28) for the eccentric (27) is arranged on the edge (12b) of a receptacle (12a) of one of the two fitting parts (11, 12), wherein the edge (12b) of the receptacle (12a) is partially extended along the circumference of the edge by means of individual axial projections (12c).

Abstract: A stepper motor suitable for use in a medical imaging environment has (a) a cylindrical central gear having an external surface with circumferentially distributed and radially directed teeth, (b) a shaft for mounting the central gear such that it is constrained to move in rotational motion about its centerline, (c) a cylindrical hoop gear having a bore with an internal surface having circumferentially distributed and radially directed teeth, (d) level arm crank mechanisms for mounting the hoop gear such that it is constrained to move in translational-circular motion about the central gear's centerline, wherein this central gear is further configured to fit within the hoop gear's bore in such a manner that a plurality of the central gear and hoop gear teeth intermesh and cooperate so that the planetary movement of the hoop gear causes the central gear to rotate, and (e) piston mechanisms for applying a fluid pressure driven force to specified points on the hoop gear so as to cause its movement.

Abstract: An automatic stepless transmission includes a driving shaft, a driving disk rotatable by the driving shaft, and a clutch assembly rotatable by the driving disk. Two parallel guiding slots are provided on the driving shaft. An eccentric plate with a notch is sleeved onto the driving shaft. A compressible resilient regulation mechanism is disposed between the notch and the driving shaft. The driving disk is installed on the eccentric plate via a bearing. The eccentric plate offsets in relation to the axis of the driving shaft, and at the same time the eccentric plate drives the driving disk offset. The automatic stepless transmission can compress or release the resilient regulation mechanism according to loads. The eccentricity between the eccentric plate and the driving shaft can therefore be adjusted, and the eccentric plate can drive the driving disk to move. Thus, the eccentricity of the driving disk can be regulated without manual work. The transmission has a simple structure and can be operated easily.

Abstract: A gear transmission comprises an internal gear, an external gear, a first gear, a crankshaft, a two-stage gear and a second gear. The first gear is affixed to an end of the crankshaft, which eccentrically rotates one of the internal gear and the external gear. The two-stage gear comprises a center gear and an outer-toothed ring gear. The center gear meshes with the first gear. The outer-toothed ring gear surrounds the first gear. The second gear meshes with the outer-toothed ring gear and transmits torque from a motor to the two-stage gear. The two-stage gear is configured such that the center gear and the outer-toothed ring gear are each at least partially disposed in a common plane that crosses the rotational axis of the gear transmission.

Abstract: A sun gear is supported by an eccentric portion of a rotor via a bearing and rotatable eccentrically to the rotor axis. A ring gear includes inner teeth via which the ring gear is meshed with outer teeth of the sun gear. An output shaft is located adjacent to the sun gear in the axial direction. A fitted portion of the output shaft is loosely fitted to a fitting portion of the sun gear to transfer rotation of the sun gear to the output shaft. The bearing has a center position located in a fitting overlap region between the fitting portion of the sun gear and the fitted portion of the output shaft in the axial direction and/or located in a gear overlap region between the outer teeth of the sun gear and the inner teeth of the ring gear which are meshed with the outer gear.

Abstract: The present invention provides a center crank eccentrically oscillating speed reducer enabled to increase the available cross-sectional area of a hollow hole, while the generation of large noises is suppressed, as compared with the conventional center crank eccentrically oscillating speed reducer. An eccentrically oscillating speed reducer (100) includes a case (110) configured to have internal teeth (111), a hollow crankshaft 120 configured to have an external gear 123, external gears 131 and (131) have external teeth 131a and 132a a carrier 140, and a transmission gear (160) configured to mesh with an input gear (150) and the external gear (123) and to transmit power transmitted from the input gear (150) to the external gear (123).

Abstract: A technique of a heavy object turning apparatus that is compact, is enabled to reduce the distance between the center of gravity of a heavy object and a pivot positioned on an axis, and is configured so that a turning arm and a drive unit has a length in the direction of an axis passing through the pivot around which the heavy object is turned. A control unit fixes a support base onto a stand. An orthogonal axis reduction gear serves as an anterior reduction gear and has a configuration in which an output shaft is on an axis of a planetary gear type reduction gear serving as the posterior reduction gear. An input shaft is perpendicular to the axis. The orthogonal reduction gear is constituted by a hypoid reduction gear or a worm-geared reduction gear. A motor is disposed on the bottom surface of the orthogonal reduction gear.

Abstract: An eccentric differential drive having two output elements (3, 4) that can rotate relative to each other, in which a tumble gear (1) which can be driven by a drive element (2) and which has two external tooth sets (z1, z2) with different pitch diameters, the first output element (3) being associated with the first external tooth set (z1) and having a first internal tooth set (z3) corresponding to the first external tooth set (z1), and the second output element (4) being associated with the second external tooth set (z2) and having a second internal tooth set (z4) corresponding to the second external tooth set (z2), and in which the outputs of the first and second output elements (3, 4) are arranged opposite from the drive element (2) and are rotatably mounted on a common second longitudinal axis (A2), which second axis is arranged eccentrically to the first longitudinal axis (A1) of the tumble gear (1), and in which the rotational speed of the outputs (3, 4) varies depending on the applied rotational torque.

Abstract: A compact rotation output device is realized by disposing an output shaft of a reduction gear transmission coaxially with an axis line of a rotating disk while simultaneously ensuring a space in a rear face of the rotating disk through which a columnar bar or wiring etc. can pass. A reduction gear transmission is provided with an input shaft having an eccentric rotation member, an external gear that has a through hole at its center and revolves orbitally while engaging with the eccentric rotation member, and an internal gear that surrounds the external gear while meshing with the external gear and allows the orbital revolution of the external gear. The number of teeth of the external gear differs from the number of teeth of the internal gear. The rotating disk is fixed to one of the external gear and the internal gear of the reduction gear transmission.

Abstract: The present invention relates to a mechanically controlled continuously variable automatic transmission, comprises a housing and a torque converting mechanism mounted in the housing, the torque converting mechanism comprising an input part, a rotatable or rotary carrier, at least one eccentric assembly which is rotatablely mounted on the carrier, and an output part, wherein the input part and the carrier can rotate independently with respect to each other, and have respective rotation axes which are collinear. Each of the at least of one eccentric assembly comprises an eccentric mass which is driven to rotate around its rotation axis by the input part, the output part is provided with only one one-way clutch directly connected therewith.

Abstract: The present invention provides an eccentric oscillating type speed reducer that can more effectively be cooled with an extremely simple structure. An eccentric oscillating type speed reducer 1 includes a camshaft 11 having crank portions 11a and 11b, a plurality of externally toothed gear members 12 that respectively have holes, each of which accommodates an associated one of the crank portions, and that are eccentrically moved by rotation of the camshaft, an internally toothed gear member 13 having an inner peripheral surface in which internal teeth to be meshed with external teeth formed on external peripheral surfaces of the externally toothed gear members are formed so as to set the number of the internal teeth to be slightly larger than that of external teeth, and support members 14 respectively positioned at both ends of the externally toothed gear members so as to rotatably support both ends of the camshaft.

Abstract: An eccentrically oscillating speed reducer 100 includes a case 110 having inner teeth 110a, a plurality of crankshafts having outer teeth, outer teeth gears 131 and 132 having outer teeth 131a and 132a brought in mesh with the inner teeth 110a of the case 110 and eccentrically moved by the crankshafts, a carrier 140 rotatably supporting the crankshafts and rotated to move relative to the case 110 by the crankshafts, and a cylindrical gear 180 brought in mesh with the outer teeth of the crankshafts for transmitting a power inputted to one crankshaft 121 of the plurality of crankshafts to remaining crankshafts, and the cylindrical gear 180 is rotatably supported by sliding friction.

Abstract: A harmonic gear device (10) in which a spindle (28) and a gear rim (48) are rotatable relative to each other on a common centre axis (32), and in which a gearwheel (42), which is engaged with the gear rim (411), is rotatably connected to the spindle (28) around a first eccentric axis (36), and in which a balancing gearwheel (58), which is engaged with the gear rim (48) or a balancing gear rim, is rotatable around a second eccentric axis (40).

Abstract: An oscillating inner gearing planetary gear system is provided which does not need to occupy a large space even in a state where a driving source is joined. In particular, the axial length thereof can be shortened, and a large diameter hollow shaft therethrough can be formed. The oscillating inner gearing planetary gear system (100) is configured in such a manner that rotation of an input shaft (104) is reduced by internal oscillating bodies (116A,116B) oscillatingly rotating relative to an external gear (118), and the reduced output is delivered by the external gear (118) also serving as an output shaft. A middle shaft (108) is located parallel to the external gear (118) at a position more radially outward than the internal oscillating bodies (116A,116B). An orthogonal gearset (106) connects the middle shaft (108) and the input shaft (104) at a right angle.

Abstract: A gear transmission comprises an internal gear member, a carrier, an external gear and a first shaft. An internal gear is formed on an inner circumference of the internal gear member. The carrier is positioned coaxially with an axis of the internal gear and is rotatably supported on the internal gear member. The external gear meshes with the internal gear and is supported on the carrier in an eccentrically rotatable manner.

Abstract: An eccentric speed reducer is provided with which it is possible to achieve improved output torque without increasing the outer radial dimension of the casing. A tapered side is formed on at least part of a peripheral side surface of struts 18, with the tapered side extending in a tapered manner in the longitudinal direction of the struts 18 in a direction that is oblique to a direction parallel to a center line P passing through a casing 14 so as to connect inner circumferential centers of the casing 14 and in which the struts 18 narrow toward an end carrier 17. A tapered side gradient that is the angle of a direction in which the tapered side extends relative to the direction parallel to the center line P is formed to be at least 3 degrees and at most 6 degrees.

Abstract: A gear device has an outer cylinder fixed to a first mating member and a crankshaft inside the outer cylinder. An external gear is mounted to an eccentric portion of the crankshaft and meshes with internal teeth of the outer cylinder. A carrier is fixed to a second mating member. Rocking rotation of the external gear rotates the carrier coaxially to the outer cylinder. A cylindrical body is inserted in an axial through-hole of the carrier. The carrier has a first portion on one end of the cylindrical body and a second portion on an axially intermediate portion of the cylindrical body. The other end of the cylindrical body extends toward a corresponding mating member while protruding axially beyond the second portion. An outer diameter of remaining portions of the cylindrical body do not exceed an outermost diameter of the portion on which the first and second portions are fit.

Abstract: An in-wheel motor drive device (21) includes a motor part A, a reducer part B, a wheel hub C, and a reducer part lubricating mechanism to supply a lubricant oil to the reducer part. The reducer part lubricating mechanism includes a lubricant oil path (25c), a lubricant oil supply port (25d), a lubricant oil discharge port (22b), a circulation oil path (45) passing through a casing (22) to connect the lubricant oil discharge port (22b) to the lubricant oil path (25c), and to return the lubricant oil discharged from the lubricant oil discharge port (22b) to the lubricant oil path (25c), a cooling water path (22e) provided in the casing (22) so as to be in contact with the circulation oil path (45) to cool down the lubricant oil passing through the circulation oil path (45), and a partition member (49) arranged in a contact position between the circulation oil path (45) and the cooling water path (22e), to separate them.

Abstract: There is provided an eccentric speed reducer that achieves improved output torque without increasing the outer radial dimension of a casing. The strut includes, at the basal portion of a peripheral side surface where the strut is continuous with the base carrier, first curved portions and second curved portions that are in a form of a curved surface having a different radius of curvature. The first curved portions are provided at the supporting hole-facing sides of the strut that are disposed facing the rotation supporting holes. The second curved portions are provided between an outer side located in the strut at an outer position in the radial direction of the casing and on the side facing the inner circumference of the casing, and supporting hole-facing sides. The second curved portions have a larger radius of curvature than the first curved portions.

Abstract: An electric motor and a speed reduction device for reducing a rotational speed of the motor are contained in a housing composed of a front housing and a rear housing. The motor is positioned in the housing at its rear side, and the speed reduction device at its front side. The speed reduction device is composed of a sun gear rotatably supported on an eccentric portion formed on a rotor shaft, a ring gear having inner teeth engaging with outer teeth of the sun gear, and an output shaft loosely coupled to the sun gear for outputting the rotational torque at a reduced speed. The ring gear made of a magnetic material is positioned in contact with an axial end of a stator core of the motor to provide an additional magnetic flux path and thereby to increase an output torque of the motor.

Abstract: In the case of a transmission device (5) for a vehicle seat (1), in particular a motor vehicle seat, with at least one hub (7, 27, 27?, 27?) and a shaft (10) which interact in a form-fitting manner in order to transmit a torque, wherein the shaft (10) has a profile with m teeth (12) and the hub (7, 27, 27?, 27?) has a profile with a central opening with n receptacles (15, 15?), and wherein each receptacle (15, 15?) is designed for interaction with a tooth (12), the hub (7, 27, 27?, 27?) has n=2m receptacles (15, 15?) or n=2m?1 receptacles (15, 15?).

Abstract: There is provided an eccentrically oscillating speed reducer capable of reducing a number of parts more than that of a background art. An eccentrically oscillating speed reducer 100 includes a case 110 having inner teeth 110a, a plurality of crankshafts having outer teeth, outer teeth gears 131 and 132 having outer teeth 131a and 132a brought in mesh with the inner teeth 110a of the case 110 and eccentrically moved by the crankshafts, a carrier 140 rotatably supporting the crankshafts and rotated to move relative to the case 110 by the crankshafts, and a cylindrical gear 180 brought in mesh with the outer teeth of the crankshafts for transmitting a power inputted to one crankshaft 121 of the plurality of crankshafts to remaining crankshafts, and the cylindrical gear 180 is rotatably supported by sliding friction.

Abstract: A transmission system made of gears and bearings. The system improves the efficiency of force transfer between rotational motion and rectilinear motion. To accomplish this, the gears and bearings are assembled to allow maximum torque output during force input and reproduced cyclically. Bearings of the transmission system allow a crank to rotate to a position to increase the torque applied on gears to output shaft.