摘要:
A hub assembly (1) with a freewheel mechanism for a wheel of a bicycle or the like, comprises a central shaft (2) defining a longitudinal axis (L), a hub body (13) with a substantially cylindrical inner cavity (14) and means (15) for connection to a bicycle wheel, wherein the body (13) is pivotally mounted to the shaft (2) near one of its longitudinal ends (3, 4) and a substantially tubular freehub body (22) is pivotally mounted to the shaft (2) near the other of its longitudinal ends (3, 4). A pair of freewheel bearings (39, 40) are provided in coaxially adjacent positions, with one-way rollers (41). The assembly comprises a cylindrical sleeve (42) which is coupled in cantilever fashion to one end (49) of the freehub body (22) and is adapted to be fitted into the inner cavity (14) of the body (13) coaxial to the shaft (2), both freewheel bearings (39, 40) being locked in said inner cavity (14) of the hub body (13) in an axially staggered position relative to the freehub body (22), with the one-way rollers (41) directly interacting with the sleeve (42). A method for quick assembly and a method for quick maintenance of the hub assembly (1).
摘要:
A hub assembly (1) with a freewheel mechanism for a wheel of a bicycle or the like, comprises a central shaft (2) defining a longitudinal axis (L), a hub body (13) with a substantially cylindrical inner cavity (14) and means (15) for connection to a bicycle wheel, wherein the body (13) is pivotally mounted to the shaft (2) near one of its longitudinal ends (3, 4) and a substantially tubular freehub body (22) is pivotally mounted to the shaft (2) near the other of its longitudinal ends (3, 4). A pair of freewheel bearings (39, 40) are provided in coaxially adjacent positions, with one-way rollers (41). The assembly comprises a cylindrical sleeve (42) which is coupled in cantilever fashion to one end (49) of the freehub body (22) and is adapted to be fitted into the inner cavity (14) of the body (13) coaxial to the shaft (2), both freewheel bearings (39, 40) being locked in said inner cavity (14) of the hub body (13) in an axially staggered position relative to the freehub body (22), with the one-way rollers (41) directly interacting with the sleeve (42). A method for quick assembly and a method for quick maintenance of the hub assembly (1).
摘要:
Provided is a transmission of an e-bike motor, the transmission including a plurality of planetary gears meshed with a sun gear transmitting a power of a rotation shaft of a motor, a ring gear including a gear member meshed with an inner circumferential surface of the planetary gears and a clutch member formed at the other end of the gear member to shift a direction of power in response to backward and forward rotations, where the gear member and the clutch member are individual parts, and a connection unit connecting the gear member and the clutch member lest the gear member and the clutch member idle relative to an axial direction, wherein the plurality of planetary gears and the gear member of ring gear are provided in helical gears.
摘要:
La présente invention concerne un dispositif de roue libre, notamment pour bicyclette, du type comportant un corps intérieur (4) solidaire du moyeu de roue et d'un corps extérieur (9) solidaire des pignons de transmission par chaîne (3), les deux corps étant coaxiaux et libres en rotation relative et réunis par un moyen tel qu'un roulement à bille d'une part, caractérisé en ce qu'il comporte un corps intermédiaire (5) cylindrique présentant des lumières (10) dans lesquelles sont logés des éléments de blocage (7) mobiles dans leur plan radial, le corps intermédiaire (5) étant disposé entre le corps intérieur et le corps extérieur et comportant des moyens (6) pour autoriser la rotation par rapport au corps extérieur (9) selon un sens seulement, le corps extérieur (5) présentant à sa surface intérieure une pluralité de cannelures (10) de forme et de section complémentaires à celles des éléments de blocage (7), et en ce que le corps intérieur (4) comporte des moyens pour repousser radialement les éléments de blocage (7) vers le cannelures (10) lorsque la rotation du corps intermédiaire par rapport au corps extérieur est bloquée.
摘要:
The present invention provides a roller type one-way clutch (30) comprising an outer race (1) in which pockets (4) provided at their inner surfaces with cam surfaces (12) are formed, an inner race (2) spaced apart from the outer race (1) in a radial inner diameter side and disposed coaxially with the outer race (1) for a relative rotational movement and having an annular outer peripheral track surface (11), a plurality of rollers (3) disposed within the pockets (4) to be engaged with the cam surfaces (12) and adapted to transmit torque between the outer race (1) and the inner race (2), a holder (6) having a cylindrical portion (10) and windows (18) provided in the cylindrical portion (10) to hold the plurality of rollers (3), and springs (5) disposed within the pockets (4) between the outer race (1) and the inner race (2) and adapted to bias the rollers (3) to be engaged with the cam surfaces (12), and wherein the holder (6) is rotatable relative to the outer race (1) and biasing forces of the springs (5) are transmitted to the holder (6) via the
摘要:
A device for storing and delivering elastic energy (1), which comprises: - elastic means (3) adapted to store and deliver elastic energy, - a ring (5) adapted to be connected kinematically to a machine to which the elastic energy stored in the elastic means (3) is to be delivered, or from which energy to be stored in the form of the elastic energy in the elastic means (3) is to be drawn; - a first motion transmission shaft (7) which is connected kinematically to the elastic means (3), wherein the rotation of the first shaft (7) in a first direction of rotation (A) loads the elastic means (3), - a mechanical exchange device (9, 19) configured to render the first shaft (7) integral with the ring (5) in the first direction of rotation (A) and to render the first shaft (7) free with respect to the ring (5) in a second direction of rotation (O), which is opposite with respect to the first direction of rotation (A), allowing the free rotation of the ring (5) in the second direction of rotation (O), - a second motion transmission shaft (11), the mechanical exchange device (9, 19) being configured to render the second shaft (11) integral with the ring (5) in the second direction of rotation (O), - an assembly (13) for transferring the motion from the first shaft (7) to the second shaft (11), - a freewheel mechanism (15) configured to transmit the motion from the first shaft (7) to the transfer assembly (13) only in the second direction of rotation (O) of the first shaft (7), - a mechanism for locking the elastic means (3), which can be activated in order to lock the elastic means (3) in their loaded or partially loaded configuration, wherein the deactivation of the locking mechanism releases the elastic energy stored in the elastic means (3), producing the rotation of the first shaft (7) in the second direction of rotation (O).