A transmission shifting assistance device, in particular for a motorcycle, is provided. The transmission shifting assistance device, which allows shifting when the clutch is closed, includes a housing, a piston arranged in the housing, and at least one pressure spring provided in the housing. The piston may be moved relative to the housing by compressing at least one pressure spring. Furthermore, transmission shifting assistance device further includes a locking device separate from the at least one pressure spring. The locking device fixes the piston in a neutral position relative to the housing below a predetermined unlocking force exerted on the piston or the housing.

There is provided a shift device for a straddle-type vehicle that is configured to cause a transmission device to perform a shift change in accordance with rotation of a shift shaft. The shift device includes: a shift lever provided with an operation portion that is configured to receive a shift operation; a shift sensor provided on the shift shaft so as to be integrally rotatable with the shift shaft; and a shift rod that couples the shift lever and the shift sensor. The shift sensor is configured to detect the shift operation on the shift lever in accordance with a movement of the shift rod. The operation portion and the shift sensor are positioned at the same side in a manner of sandwiching the shift rod.

A device for a gear shift system for a vehicle, the gear shift system comprising a gear shift member, the device comprises a device member, and a member connector configured to connect to the gear shift member and thereby connect the device to the gear shift system so that, in use, one of the device member and the gear shift member is beneath a rider's foot to provide a first member, and the other of the device member and the gear shift member is above the rider's foot to provide a second member, wherein in use downwards movement of the first member effects a first gear shift and in use upwards movement of the second member effects a second gear shift.

The present invention provides a shift control device of a vehicle mounted to a body of a vehicle and having a gearbox, a shift actuator, a base, a gearshift lever, and a gearshift detector. The gearshift lever is disposed on the base. The gearshift detector is electrically connected to the shift actuator. The gearshift lever has a shift pedal, the shift pedal has a pivot portion, and the shift pedal is connected pivotally to the base by the pivot portion. The gearshift detector has a rotating element, and the rotating element is rotated coaxially with the pivot portion of the shift pedal. In the shift control device of a vehicle of the present invention, a signal wire will not be wrapped with other components, so transmission errors of mechanisms are reduced, and the structure is simple.

A controller drives a shifting actuator to move a first engagement member from an original position of a first engagement portion in one direction along a relative motion path and acquires first position information representing a first position, the first position being a position where the first engagement portion moved in the one direction contacts a second engagement portion. The controller drives the shifting actuator to move the first engagement member from the original position in the other direction along the relative motion path and acquires second position information representing a second position where the first engagement portion moved in the other direction contacts the second engagement portion. The controller calculates a center position of the first engagement portion on the relative motion path from the acquired first position information and the acquired second position information, compares the calculated center position to the original position.

A vehicle control system includes: an operation unit disposed in a vehicle and operable by a driver; an operation detection unit configured to detect an operation on the operation unit, and including a displacement unit that is displaced according to an operation amount of the operation unit, and a detection unit that detects a displacement amount of the displacement unit and that outputs a continuous signal according to the displacement amount; and a control unit that inputs the continuous signal detected by the detection unit and performs a predetermined control corresponding to the continuous signal is provided.

There is provided a shift device for a straddle-type vehicle that is configured to cause a transmission device to perform a shift change in accordance with rotation of a shift shaft. The shift device includes: a shift lever provided with an operation portion that is configured to receive a shift operation; a shift sensor provided on the shift shaft so as to be integrally rotatable with the shift shaft; and a shift rod that couples the shift lever and the shift sensor. The shift sensor is configured to detect the shift operation on the shift lever in accordance with a movement of the shift rod. The operation portion and the shift sensor are positioned at the same side in a manner of sandwiching the shift rod in a vehicle side view.

The invention pertains to a force transmitting device (100) for a transmission (200), particularly of a motorcycle, with a shift assist system, featuring a shift input shaft (30) with a shift lever connection (20) for receiving a shifting motion of a shift lever (300) and a transmission connection (40) for transmitting the shifting motion to a gear shifting gate (110) of the transmission (100), wherein the shift input shaft (30) features an energy accumulator (32) for the intermediate storage of at least part of the shifting force such that the relative motion between the shift lever connection (20) and the transmission connection (40) can be realized by changing the shifting force stored in the energy accumulator (32), and wherein the shift input shaft (30) features a sensor device (60) for detecting the relative motion between the shift lever connection (20) and the transmission connection (40).

A device and method check the position of a gearshift lever for a gearbox of a vehicle. The device is designed to determine first sensor data relating to the length of the selector travel of the selector shaft of the gearbox during at least one upshifting process which is brought about by the driver of the vehicle deflecting the gearshift lever in a first direction. The device is also designed to determine second sensor data relating to the length of the selector travel of the selector shaft of the gearbox during at least one downshifting process brought about by the driver of the vehicle deflecting the gearshift lever in a second direction. The device is designed to check the position of the gearshift lever on the basis of the first sensor data and on the basis of the second sensor data.

There is provided a shift device for a straddle-type vehicle that is configured to cause a transmission device to perform a shift change in accordance with rotation of a shift shaft. The shift device includes: a shift lever provided with an operation portion that is configured to receive a shift operation; a shift sensor provided on the shift shaft so as to be integrally rotatable with the shift shaft; and a shift rod that couples the shift lever and the shift sensor. The shift sensor is configured to detect the shift operation on the shift lever in accordance with a movement of the shift rod. The operation portion and the shift sensor are positioned at the same side in a manner of sandwiching the shift rod.