Abstract: The described actuation device comprises a casing, intended for the attachment to the handlebar of the bicycle, a cable-winding bobbin, angularly mobile in the casing about a main axis of the device, a first driving mechanism, acting on the bobbin to rotate it in a first angular direction, a second driving mechanism, acting on the bobbin to rotate it in a second angular direction opposite the first, as well as indexer assembly for removably holding the bobbin in predetermined angular positions. In accordance with the invention, the indexer assembly comprise first countering member, to counter the rotation of the bobbin in the first direction, and second countering member, distinct from the first countering member, to counter the rotation of the bobbin in the second direction. Asymmetric operation is thus obtained which allows active actuation to be set both for upward gearshifting and for downward gearshifting.

Abstract: A right crank arm assembly for a bicycle has a right crank arm and at least one toothed crown that is coupled to the right crank arm. At least one damping element is arranged between the right crank arm and the toothed crown to be in abutment against respective faces of the right crank arm and the toothed crown.

Abstract: A device (42, 50, 70, 75, 80, 85) for manually inputting commands for an electronically servo-assisted bicycle gearshift (8) comprises a lever (54, 86) configured to actuate a first switch (60) when it is rotated by a first predetermined angle, and to actuate the first switch (60) and a second switch (61) when it is rotated by a second predetermined angle after the rotation by the first predetermined angle. A command input requesting gearshifting in a first direction is considered to be valid when only the first switch (60) is actuated, and a command input requesting gearshifting in a second direction is considered to be valid only when both of the switches (60, 61) are actuated.

Abstract: A control device for a bicycle with curved handlebars is described, comprising a support body fixable to the handlebars of the bicycle and a brake lever pivoted to the support body, a resisting arm of which integrally moves with an end of a brake cable, the support body having a grippable distal-upper projection, the brake lever having a first actuation area in a first riding condition gripping the support body, and a second actuation area in a second riding condition gripping the projection.

Abstract: A device (42, 50, 70, 75, 80, 85) for manually inputting commands for an electronically servo-assisted bicycle gearshift (8) comprises a lever (54, 86) configured to actuate a first switch (60) when it is rotated by a first predetermined angle, and to actuate the first switch (60) and a second switch (61) when it is rotated by a second predetermined angle after the rotation by the first predetermined angle. A command input requesting gearshifting in a first direction is considered to be valid when only the first switch (60) is actuated, and a command input requesting gearshifting in a second direction is considered to be valid only when both of the switches (60, 61) are actuated.

Abstract: A right crank arm assembly for a bicycle has a right crank arm and at least one toothed crown that is coupled to the right crank arm. At least one damping element is arranged between the right crank arm and the toothed crown to be in abutment against respective faces of the right crank arm and the toothed crown.

Abstract: A method for carrying out gearshifting of a bicycle derailleur through an actuation device is described that utilizes a mobile mechanical member to control the derailler. Every gearshifting operation corresponds to a movement of predetermined amount of the mobile member. The method is carried out by the steps of an active initial movement of the mobile member for a first amount equal to only a portion of the amount of the movement corresponding to gearshifting; and an automatic final movement of the mobile member for a second amount equal to the remaining portion of the amount of the movement corresponding to gearshifting. Devices capable of implementing such a method are also described.

Abstract: The described actuation device comprises a housing, intended for attachment to the handlebars or to the frame of a bicycle, a cable-winding bobbin, angularly mobile in the housing about a main axis (X) of the device, and support means of the bobbin in the housing. Such support means comprise a first support unit at an outer guide collar of the cable-winding bobbin, situated in an intermediate position of the bobbin in the direction of the main axis (X) of the device. An excellent distribution of the stresses between the bobbin and the housing is thus ensured, substantially reducing the risks of excessive deformation and breaking.

Abstract: A control device for a bicycle with curved handlebars is described, comprising a support body fixable to the handlebars of the bicycle and a brake lever pivoted to the support body, a resisting arm of which integrally moves with an end of a brake cable, the support body having a grippable distal-upper projection, the brake lever having a first actuation area in a first riding condition gripping the support body, and a second actuation area in a second riding condition gripping the projection.

Abstract: The described actuation device comprises a casing, intended for the attachment to the handlebar of the bicycle, a cable-winding bobbin, angularly mobile in the casing about a main axis of the device, a first driving mechanism, acting on the bobbin to rotate it in a first angular direction, a second driving mechanism, acting on the bobbin to rotate it in a second angular direction opposite the first, as well as indexer assembly for removably holding the bobbin in predetermined angular positions. In accordance with the invention, the indexer assembly comprise first countering member, to counter the rotation of the bobbin in the first direction, and second countering member, distinct from the first countering member, to counter the rotation of the bobbin in the second direction. Asymmetric operation is thus obtained which allows active actuation to be set both for upward gearshifting and for downward gearshifting.

Abstract: The described actuation device comprises a casing, intended for the attachment to the handlebar of the bicycle, a cable-winding bobbin, angularly mobile in the casing about a main axis of the device, a first driving mechanism, acting on the bobbin to rotate it in a first angular direction, a second driving mechanism, acting on the bobbin to rotate it in a second angular direction opposite the first, as well as indexer assembly for removably holding the bobbin in predetermined angular positions. In accordance with the invention, the indexer assembly comprise first countering means, to counter the rotation of the bobbin in the first direction, and second countering means, distinct from the first countering means, to counter the rotation of the bobbin in the second direction. Asymmetric operation is thus obtained which allows active actuation to be set both for upward gearshifting and for downward gearshifting.

Abstract: The invention refers to a control device for driving a derailleur, comprising: —at least a manual actuation member to issue a command to shift the derailleur in a first direction and a command to shift the derailleur in a second direction opposed to the first one, —a cable head holder for securely coupling with a first end of an inextensible cable having a second end securely coupled with the derailleur, —a first mechanism which in response to said command to shift the derailleur in the first direction and to said command to shift the derailleur in the second direction is moved among a set of stable positions, in a first direction and in a second direction, respectively, and —a second mechanism that converts the movement of the first mechanism in a movement of the cable head holder.

Abstract: A method for carrying out gearshifting of a bicycle derailleur through an actuation device is described that utilizes a mobile mechanical member to control the derailleur. Every gearshifting operation corresponds to a movement of predetermined amount of the mobile member. The method is carried out by the steps of an active initial movement of the mobile member for a first amount equal to only a portion of the amount of the movement corresponding to gearshifting; and an automatic final movement of the mobile member for a second amount equal to the remaining portion of the amount of the movement corresponding to gearshifting. Devices capable of implementing such a method are also described.

Abstract: The described actuation device comprises a housing, intended for attachment to the handlebars or to the frame of a bicycle, a cable-winding bobbin, angularly mobile in the housing about a main axis (X) of the device, and support means of the bobbin in the housing. Such support means comprise a first support unit at an outer guide collar of the cable-winding bobbin, situated in an intermediate position of the bobbin in the direction of the main axis (X) of the device. An excellent distribution of the stresses between the bobbin and the housing is thus ensured, substantially reducing the risks of excessive deformation and breaking.

Abstract: The described actuation device comprises a casing, intended for the attachment to the handlebar of the bicycle, a cable-winding bobbin, angularly mobile in the casing about a main axis of the device, a first driving mechanism, acting on the bobbin to rotate it in a first angular direction, a second driving mechanism, acting on the bobbin to rotate it in a second angular direction opposite the first, as well as indexer assembly for removably holding the bobbin in predetermined angular positions. In accordance with the invention, the indexer assembly comprise first countering means, to counter the rotation of the bobbin in the first direction, and second countering means, distinct from the first countering means, to counter the rotation of the bobbin in the second direction. Asymmetric operation is thus obtained which allows active actuation to be set both for upward gearshifting and for downward gearshifting.