Abstract:
A continuously-variable transmission-ratio speed variator (20) is described. It has a driving rotor (30), two output driven rotors (26, 28); two groups of oscillating or rolling elements (40a, 40b), means (46a, 46b, 70a, 70b) to induce in the rolling or oscillating elements a periodic, alternate oscillating or rolling motion and a mechanism (64) to maintain the direction of rotation of the two output rotors opposite to one another. Each group of oscillating or rolling elements is respectively interposed between the driving rotor and an output rotor so as to be able to lock at least on that output rotor for a given direction of rotation of the driving rotor; the latter being arranged to rotate contrary (Finv) to said given direction of rotation (fkn) so that the rolling or oscillating elements can impart to the respective driven rotor a thrust in the opposite direction to that of actual rotation of the driving rotor. Said means induce in the rolling or oscillating elements a periodic, alternate oscillating or rolling motion of variable amplitude in the verse of their locking, so as to exert a thrust on, and then transfer rotational motion to, their respective output rotor as a result of said motion, the amplitude of said motion determining the rpm or torque transferred to the respective output rotor and thus the respective transmission ratio,
Abstract:
Die Erfindung richtet sich auf ein stufenloses Getriebe (1;1';1";1 (3) ) zur Übertragung einer relativen Drehbewegung zwischen einem ersten, vorzugsweise angetriebenen Drehteil (4; 4'; 4"; 4 (3) ) und einem Chassis (2) oder Gehäuse (22) auf ein zweites, vorzugsweise abtreibendes Drehteil (8; 8'; 8"), wobei ein Drehteil mit einem ersten Führungs- oder Lagermodul (3; 3'; 3") gekoppelt ist, während das andere Drehteil mit einem zweiten Führungs-oder Lagermodul (5; 5'; 5") gekoppelt ist, derart, dass beide Drehteile um zueinander parallele Drehachsen rotieren können, und wobei die beiden Führungs- oder Lagermodule derart mit einem Chassis oder Gehäuse des Getriebes oder eines angeschlossenen Maschinen- oder Anlagenteils verbunden, insbesondere daran dreh- oder schwenkbar gelagert oder geführt oder befestigt sind, dass der Abstand zwischen den beiden, zueinander parallelen Drehachsen variabel ist.
Abstract:
Die Geschwindigkeit bei einem formschlüssigen Getriebe kann im allgemeinen nur in Stufen verändert werden. Durch gemeinschaftliche radial verstellbare Kupplungselemente (3), die mit An- und Antrieb verbunden sind und die bei jeder Umdrehung des An- und Abtriebs sowohl aktiv treibend als auch passiv freilaufend die Kraftübertragung bewirken, ist eine kontinuierliche Geschwindigkeitsveränderung möglich gemacht. Das Getriebe besteht aus einem Hohlrad (1) und einem kleineren in dem Hohlrad umlaufenden, exzentrisch angeordneten Rotor (2). Die Kupplungselemente sind an dem Hohlrad gelagert, laufen mit diesem um und greifen andererseits an dem Rotor formschlüssig an. Ein gezielter Eingriff der Kupplungselemente in den Rotor wird aber nur durch ein Steuerelement (4) bewirkt, das zur Einstellung des Übersetzungsverhältnisses um den Rotor oder seitlich von diesem weg bewegbar gelagert ist. Das z. B. als U-förmiger Ring ausgebildete Steuerelement weist den Kupplungselementen einen definierten Eingriffsbereich zu, so dass über diesen verstellbaren Eingriffsbereich das gewünschte Übersetzungsverhältnis angesteuert wird.
Abstract:
A simple stepless variable transmission in which rotation of an input shaft (10) is translated into circular motion of an input stage arm (16) which is then converted into periodic rotation of an intermediate linkage (20) around a center of rotation that is displaced from the center of circular motion of the input stage arm (16). The periodic rotation of the intermediate linkage (20) drives an output stage arm (30) into periodic circular motion about a center that is displaced from the center of rotation of the intermediate linkage (20). An overrunning clutch (36) then transmits the useful portion of the periodic circular motion to an output shaft (37). Simultaneously controllably varying the distances between the centers of motion for the input stage arm (16), the intermediate linkage (20) and the output stage arm (30) controllably varies the ratio of the transmission.
Abstract:
La roue a diametre variable comporte une couronne (10) munie d'au moins une aube (21) qui s'ecarte de sa position de repos pour faire varier le diametre exterieur ou interieur de la roue. La roue selon l'invention peut etre equipee de cannelures classiques, et des moyens sont proposes pour eviter et/ou gerer tout conflit de dents. La roue est alors un engrenage a variation continue ou par etages. Elle entre dans la composition de nombreux types de mecanismes de transmission par friction ou par engrenement et permet en particulier de realiser un train epicyclo'idal a diametre variable offrant une plage de rapports de transmission considerable variant jusqu'a l'infini.
Abstract:
Está constituida a partir de una carcasa (1) en la que se establecen opuestamente un eje de entrada (2) y un eje de salida (3), si bien la caja puede funcionar en ambos sentidos, de manera que el eje de entrada (2) está asociado a una doble junta homocinética (4) dotada de un árbol deslizante (5) que transmite el movimiento a un cabezal (6) que queda enfrentado a un disco (7) cuyo eje de giro coincide con el eje de salida (3), cabezal (6) desplazable radialmente sobre la superficie del disco (7), con el concurso de un carro (8), y en cuyo seno se establecen una pluralidad de columnas de presión equiangularmente distribuidas, dotadas de bulones de arrastre emergentes selectivamente por la acción de una serie de ruedas montadas sobre una horquilla, de manera que cuando bascula entra en contacto con una de las columnas de presión y provoca la emergencia del citado bulón de arrastre, provocando el desplazamiento del disco (7).
Abstract:
The patent application discloses a mechanical speed variator configured to transmit rotational motion from a prime mover (1) to a driven member (50). The mechanical speed variator includes a variable speed device, a plurality of actuated two way grippers (100) and a driven member (50). The actuated two way grippers are operable to sequentially grip and release the driven member over a predetermined range of rotation of each actuated gripper to rotate the driven member around a driven member axis of rotation (38). Also disclosed is the functioning of the variable speed device.
Abstract:
Transmission (11), transmission lock assemblies (34), methods of adjusting a gear ratio of a transmission (11), and methods of forming a transmission shift mechanism (30) are provided. A transmission (11) includes a mount assembly (32) including a mount support (36) adapted to couple about a central axle (20) having a central axis (X, X), and an eccentric mount (37) defining an eccentric axis (E, E) and movably coupled with the mount support (36) allowing radial adjustment of the eccentric mount (37) relative to the central axle (20) intermediate a first position and a second position to adjust a gear ratio of the transmission (11); and wherein resultant forces are generated responsive to the eccentric axis (E, E) being spaced from the central axis (X, X), and the mount support (36) and the eccentric mount (37) are configured to minimize effects of the resultant forces upon the eccentric mount (37) in positions intermediate the first position and the second position.
Abstract:
The system is comprised of three sub-systems. The first sub-system has an actuation lever (P) which can rotate about an axis (E1) to displace excentrically the Second Sub-system with respect to the Third by a predetermined angle circonferentially about a toothed wheel (R1), a toothed fluted wheel (R2) or fluted cross or cross with sliding torkes, and gear carrying shafts passing therethrough. The grooved wheel (R2) rotates in a fixed transmission relationship with respect to the rotation of the input shaft. The second sub-system transforms and divides the input power for the primary shaft into powers which are transmitted to various secondary shafts (E3, E4) characterized by oscillating angular speeds and torkes. The third sub-system composes the powers transmitted by the secondary shafts by means of a epicyclic train (T1) into an output power. The resulting output motion is proportional to the eccentricity angle of the first sub-system with respect to the third sub-system. Application to the automotion industry and to any other industry which requires a continuous regulation of the speed and of the torke provided by a power unit.
Abstract:
The invention is a variable mechanical transmission for converting a rotary input into a rotary output. The transmission includes a spindle (12) for mounting, allowing for rotation in response to the rotary input, a hub (16) mounted on the spindle for rotation therewith, and a plurality of elongate arms (18). The arms are each pivotally mounted on the hub (16), with the pivoting axes of the arms being arranged about the spindle axis. Each arm (18) carries at its outer end a clutched pinion (24) which rotates in one direction only. The pinions engage the teeth of a gear (26). The gear is mountable on a frame for rotation about a gear axis paralleling the spindle axis and also for movement on a frame (48) between concentric and extreme eccentric positions, at which the gear axis has a minimal and maximal displacement, respectively, from the hub axis. Also included in the transmission is shifting structure (38, 82) operable to shift the gear from its concentric toward its extreme eccentric position, and rotary output means (30) coupled to the gear for rotation therewith about the gear axis, for producing a rotary output. The shifting structure may be controlled by an operator or shift responsively to a load on the transmission.