Abstract: A rear derailleur with an articulated quadrilateral linkage movable body along respective parallel articulation axes perpendicular to a reference plane (REF), a base body on a bicycle frame along a drop-out axis (F), a chain guide being rotatable around a first rotation axis (R), an upper pulley rotatable around a second rotation axis (RS). The first rotation axis (R) and the second rotation axis (RS) are parallel and spaced by a distance of eccentricity (E). An angle of inclination (Q) of the articulated quadrilateral is defined by the angle that the drop-out axis (F) and the reference plane (REF) form on a plane passing through the drop-out axis (F) and perpendicular to the reference plane (REF). The angle of inclination (Q) being between 5° and 40°, including extreme values, and the distance of eccentricity (E) being between 18 mm and 50 mm, including extreme values.

Abstract: A bearing cup for a bicycle bottom bracket assembly is disclosed. The bearing cup comprises an annular body having a radially outer substantially cylindrical surface portion configured to be coupled with the frame of the bicycle and a radially inner substantially cylindrical surface portion defining a housing seat for a bearing. A plurality of ribs extend radially inwards from said radially inner substantially cylindrical surface portion. The plurality of ribs are configured to be coupled with interference with said bearing. In another embodiment, a bicycle bottom bracket assembly is disclosed that includes the aforementioned bearing cup and a bearing configured to be housed inside the bearing cup.

Abstract: A bicycle derailleur comprising a chain guide, an electric motor that displaces the chain guide and an electrically controllable device configured to, selectively, block the rotation of the electric motor and let the electric motor free to rotate. A method for actuating a bicycle derailleur comprising a chain guide and an electric motor that displaces the chain guide, comprises the steps of: receiving a gearshifting request signal; making the electric motor free to rotate; driving the electric motor to displace the chain guide until the chain guide is in an intended position while the electric motor is made free to rotate; and, blocking the rotation of the electric motor.

Abstract: The invention relates to a bicycle gearshift comprising a locking device acting between a connection member and a first body. The locking device comprises a pin slidable along a sliding axis in a through cavity formed on said first body and comprising an actuation end portion to be actuated in order to command shifting from a first operative configuration to a second operative configuration, and an opposite locking end portion that, when said locking device is in said second operative configuration, is in abutment against said connection member thus preventing a relative rotation between said first body and said connection member. When said locking device is in said second operative configuration said actuation end portion is arranged at one side of said connection member and said locking end portion is arranged at the other side of said connection member.

Abstract: A bicycle electric rear derailleur that has a support body configured to be mounted on a bicycle frame at an assembly of wheels coaxial with a hub of a rear wheel of the bicycle, a movable body, having a chain guide and linkage between the movable body and the support body. The linkage between the movable body and the support body comprises an inner connecting rod and an outer connecting rod. The ends of the rods are articulated to the support body and to the movable body to form an articulated parallelogram. A battery power supply unit is supported by one of the inner connecting rod and the outer connecting rod.

Abstract: A bearing cup for a bicycle bottom bracket assembly is disclosed. The bearing cup comprises an annular body having a radially outer substantially cylindrical surface portion configured to be coupled with the frame of the bicycle and a radially inner substantially cylindrical surface portion defining a housing seat for a bearing. A plurality of ribs extend radially inwards from said radially inner substantially cylindrical surface portion. The plurality of ribs are configured to be coupled with interference with said bearing. In another embodiment, a bicycle bottom bracket assembly is disclosed that includes the aforementioned bearing cup and a bearing configured to be housed inside the bearing cup.

Abstract: A bicycle gearshift comprising first and second moveable bodies, a rocker arm rotatably connected to the second body on a rotation axis, an elastic element that rotates the rocker arm about the rotation axis, and a unidirectional damping device operatively arranged between the rocker arm and the second body. The unidirectional damping device comprises a first ring nut arranged coaxially to the rotation axis and rotatable with the rocker arm and a second coaxially arranged positioned axially adjacent to the first ring nut. The first and second ring nuts have matching saw-toothings. An actuator for the unidirectional damping device acts on one of said ring nuts to axially push that ring nut towards the other ring nut so as to mutually engage the saw-toothings when the rocker arm is moved about the rotation axis in a second direction of rotation.

Abstract: A rear derailleur with an articulated quadrilateral linkage movable body along respective parallel articulation axes perpendicular to a reference plane (REF), a base body on a bicycle frame along a drop-out axis (F), a chain guide being rotatable around a first rotation axis (R), an upper pulley rotatable around a second rotation axis (RS). The first rotation axis (R) and the second rotation axis (RS) are parallel and spaced by a distance of eccentricity (E). An angle of inclination (Q) of the articulated quadrilateral is defined by the angle that the drop-out axis (F) and the reference plane (REF) form on a plane passing through the drop-out axis (F) and perpendicular to the reference plane (REF). The angle of inclination (Q) being between 5° and 40°, including extreme values, and the distance of eccentricity (E) being between 18 mm and 50 mm, including extreme values.

Abstract: A bicycle electric rear derailleur that has a support body configured to be mounted on a bicycle frame at an assembly of wheels coaxial with a hub of a rear wheel of the bicycle, a movable body, having a chain guide and linkage between the movable body and the support body. The linkage between the movable body and the support body comprises an inner connecting rod and an outer connecting rod. The ends of the rods are articulated to the support body and to the movable body to form an articulated parallelogram. A battery power supply unit is supported by one of the inner connecting rod and the outer connecting rod.

Abstract: A bicycle gearshift comprising first and second moveable bodies, a rocker arm rotatably connected to the second body on a rotation axis, an elastic element that rotates the rocker arm about the rotation axis, and a unidirectional damping device operatively arranged between the rocker arm and the second body. The unidirectional damping device comprises a first ring nut arranged coaxially to the rotation axis and rotatable with the rocker arm and a second coaxially arranged positioned axially adjacent to the first ring nut. The first and second ring nuts have matching saw-toothings. An actuator for the unidirectional damping device acts on one of said ring nuts to axially push that ring nut towards the other ring nut so as to mutually engage the saw-toothings when the rocker arm is moved about the rotation axis in a second direction of rotation.

Abstract: The invention relates to a bicycle gearshift comprising a locking device acting between a connection member and a first body. The locking device comprises a pin slidable along a sliding axis in a through cavity formed on said first body and comprising an actuation end portion to be actuated in order to command shifting from a first operative configuration to a second operative configuration, and an opposite locking end portion that, when said locking device is in said second operative configuration, is in abutment against said connection member thus preventing a relative rotation between said first body and said connection member. When said locking device is in said second operative configuration said actuation end portion is arranged at one side of said connection member and said locking end portion is arranged at the other side of said connection member.

Abstract: A bicycle derailleur comprising a chain guide, an electric motor that displaces the chain guide and an electrically controllable device configured to, selectively, block the rotation of the electric motor and let the electric motor free to rotate. A method for actuating a bicycle derailleur comprising a chain guide and an electric motor that displaces the chain guide, comprises the steps of: receiving a gearshifting request signal; making the electric motor free to rotate; driving the electric motor to displace the chain guide until the chain guide is in an intended position while the electric motor is made free to rotate; and, blocking the rotation of the electric motor.

Abstract: The present invention refers to a control device and to a control system of a bicycle electronic system as well as to a bicycle electronic system using the same, in particular a bicycle electronic gearshift. In particular, the control device of a bicycle electronic system comprises a containment casing, containing inside it at least one switch, and at least one manual actuation member faced at the containment casing and acting on a respective switch of the at least one switch for imparting at least one manual command to the bicycle electronic system. The containment casing is provided with a housing seat suitable for receiving at least one input multiplier able to be connected to the at least one switch to receive the manual command when the at least one manual actuation member activates the respective switch.

Abstract: A bicycle sprocket assembly having a first sprocket of larger diameter and a last sprocket of smaller diameter. The last sprocket has a plurality of throats, arranged between two consecutive teeth, with respective bottom surfaces substantially tangent to a first circumferential diameter. The sprocket assembly includes a plurality of spacers arranged between the first and last sprockets with at least one spacer arranged between the last sprocket and a second-last sprocket. The last spacer comprises a radially outer surface having a second diameter greater than the first diameter and including a plurality of recessed areas, each recessed area is positioned at a respective throat of the plurality of throats. The recessed areas comprise respective base surfaces substantially tangent to a second circumference having a third diameter smaller than or equal to the first diameter.

Abstract: A bicycle sprocket assembly having a first sprocket of larger diameter and a last sprocket of smaller diameter. The last sprocket has a plurality of throats, arranged between two consecutive teeth, with respective bottom surfaces substantially tangent to a first circumferential diameter. The sprocket assembly includes a plurality of spacers arranged between the first and last sprockets with at least one spacer arranged between the last sprocket and a second-last sprocket. The last spacer comprises a radially outer surface having a second diameter greater than the first diameter and including a plurality of recessed areas, each recessed area is positioned at a respective throat of the plurality of throats. The recessed areas comprise respective base surfaces substantially tangent to a second circumference having a third diameter smaller than or equal to the first diameter.

Abstract: The present invention refers to a control device and to a control system of a bicycle electronic system as well as to a bicycle electronic system using the same, in particular a bicycle electronic gearshift. In particular, the control device of a bicycle electronic system comprises a containment casing, containing inside it at least one switch, and at least one manual actuation member faced at the containment casing and acting on a respective switch of the at least one switch for imparting at least one manual command to the bicycle electronic system. The containment casing is provided with a housing seat suitable for receiving at least one input multiplier able to be connected to the at least one switch to receive the manual command when the at least one manual actuation member activates the respective switch.