摘要:
A command device for a bicycle gear change, comprising: a rotating drum (2) provided with a rotation axis (x) and being predisposed to rotate in opposite directions in order to wind at least a portion of a change-activating cable (3) on a lateral surface of the rotating drum (2); means for rotating, predisposed on command to rotate the rotating drum (2) in opposite directions according to predetermined angular steps; means for retaining predisposed to hold the rotating drum (2) in a position in absence of commands made to the means for rotating. The rotation axis (x) of the rotating drum (2) is perpendicular with respect to an advancement direction of the bicycle, that is, parallel to the rotation axis of the front wheel of the bicycle.
摘要:
An electrical control device for a motor-driven derailleur for bicycles. The control device has a supporting body adapted for attachment to the handlebars of the bicycle. A brake lever is mounted on the supporting body so that it can oscillate. A pair of switches, for controlling gear change, are carried by the supporting body. The switches are preferably mounted on a supporting plate that is located on the supporting body. Preferably, the switches are pre-assembled on the support plate before the plate is positioned on the supporting body.
摘要:
A shift and brake control device is configured to combine an electrical shift operating device and a cable operated brake operating device. The control device basically has a brake lever bracket with a pivotally mounted brake lever moveably coupled to the brake lever bracket to move between a rest position and a braking position along a brake operating plane, and at least one an electrical shift control switch. The electrical shift control switch is either fixedly mounted to the brake lever or the brake lever bracket. When two electrical shift control switches are used, the electrical shift control switches are mounted to both the brake lever and the brake lever bracket. In some embodiments, the electrical shift control switch has a rotating operating member, while other embodiments have a sliding operating member.
摘要:
A shift and brake control device is configured to combine an electrical shift operating device and a cable operated brake operating device. The control device basically has a brake lever bracket with a pivotally mounted brake lever moveably coupled to the brake lever bracket to move between a rest position and a braking position along a brake operating plane, and at least one an electrical shift control switch. The electrical shift control switch is either fixedly mounted to the brake lever or the brake lever bracket. When two electrical shift control switches are used, the electrical shift control switches are mounted to both the brake lever and the brake lever bracket. In some embodiments, the electrical shift control switch has a rotating operating member, while other embodiments have a sliding operating member.
摘要:
A shift control apparatus for a bicycle transmission comprises a signal detector that detects signals corresponding to motion of the bicycle, a threshold setting unit that sets a shift threshold value, and a time interval calculating unit that calculates time intervals after signals are detected. A control unit provides a signal to change a gear in the bicycle transmission only after a time interval between successive first and second signals passes the shift threshold value and the second signal is detected by the signal detector.
摘要:
A combined gear change and brake control unit in a support body which can be fastened to a bicycle handlebar. The brake control lever and gear change control unit are carried by a support body. The gear change unit has a rotatable shaft attached to a pulley with an end portion of a derailler control cable wound thereon. The shaft is subject to a return torque that turns the shaft to release the cable. The unit has a gear change lever that controls the rotation of the shaft in a direction that winds the cable onto the pulley and a cable release button. The gear change control unit includes a ratchet mechanism that leaves the shaft free to turn by a predetermined amount in the release direction of the cable.
摘要:
The present invention relates to a gutter selection actuator as well as a method for gutter selection in a transmission. The gutter selection actuator has precisely one double-action gutter piston (2) and one valve device (20) and can be controlled by a common control pressure. A selector finger (4) of a selector shaft (3) can be engaged and disengaged with the gutter piston (2). The position and the movement of the gutter piston (2) is determined in this connection exclusively by the valve device (20).
摘要:
A one-way transmission with a resetting function for use in ratchet mechanisms. The resetting spring for the actuating lever is arranged to also takes over the prestressing of the one-way transmission element. The integration of the following switch components is also possible; the shift lever and the one-way transmission element; the shift lever, the one-way transmission element and the resetting spring; the positioning device and the positioning pawls; of the positioning device and actuating button; the actuating button and the resetting element; and the positioning device, the actuating button and the resetting element.
摘要:
A bicycle shifter operating device for operating a shifting mechanism via a transmission element includes a control body for mounting to a bicycle in close proximity to a handlebar for controlling a pulling and releasing of the transmission element. A first lever is mounted to the control body for movement which causes the control body to effect pulling of the transmission element, and a second lever is mounted to the control body for movement which causes the control body to effect releasing of the transmission element. One lever may be pivotally coupled to the control body, and the other lever may be coupled for linear movement relative to the control body. The lever structured for linear movement may be coupled to a transmission mechanism for operating the control body in such a way that very little linear movement is needed to operate the control body. The transmission mechanism may include a plurality of ratchet teeth disposed in a common plane, where the path of movement of the linear operating body is parallel to the plane of the ratchet teeth. With such a structure, the finger contacting part associated with the linearly moving lever may be placed in front of the handlebar (by curving the body of the lever, if necessary) so that the finger contacting part moves toward the handlebar in operation without striking the handlebar. As a result, both levers may be operated by the cyclist's thumb without movement of any other fingers or the palm from the handlebar.
摘要:
A gear-change switch, particularly a stepping switch for controlling gears on bicycles or similar vehicles, has a fixed housing and an actuating element rotatably mounted for rotation in the clockwise and counterclockwise directions to tension or release a traction cable for controlling the bicycle gears. The actuation element comprises a thumb-operated gear-change switch or a twist-grip gear-change switch. The advantage of the switching device lies in the considerable simplification of the design and in the production of the components in plastic material.