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.

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 power unit having a crankcase and peripheral devices wherein a driving source for a gear shifting device is disposed so as to be displaced below the crankcase. An engine includes a gear speed change mechanism having a plurality of gear pairs for changing the speed of a rotational force of a crankshaft. A gear shifting device includes at least a plate-shaped shift arm rocking about a shift spindle to perform a gear pair changing operation on the gear speed change mechanism. A crankcase houses the gear speed change mechanism and the gear shifting device with an oil pan attached to a lower portion of the crankcase. A communicating hole communicating with the oil pan is formed in a bottom portion of the crankcase with the bottom portion being located below the shift arm, and a rocking range of the shift arm partly overlaps the communicating hole.

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.

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.

The transmission includes a rotation shaft, a shift gear, and a gear switching part. The shift gear is rotatably supported by the rotation shaft. The gear switching part is relatively unrotatably supported by the rotation shaft in a movable manner in an axial direction. The gear switching part is configured to be moved in the axial direction by a shift fork, to switch connection and disconnection between the rotation shaft and the shift gear. The gear switching part and the shift fork have a bearing therebetween. The bearing is brought into contact with the gear switching part and the shift fork, thereby reducing friction between the gear switching part and the shift fork, resulting in improvement of durability of the sliding surfaces of the gear switching part and the shift fork.

The transmission includes a rotation shaft, a shift gear, and a gear switching part. The shift gear is rotatably supported by the rotation shaft. The gear switching part is relatively unrotatably supported by the rotation shaft in a movable manner in an axial direction. The gear switching part is configured to be moved in the axial direction by a shift fork, to switch connection and disconnection between the rotation shaft and the shift gear. The gear switching part and the shift fork have a bearing therebetween. The bearing is brought into contact with the gear switching part and the shift fork, thereby reducing friction between the gear switching part and the shift fork, resulting in improvement of durability of the sliding surfaces of the gear switching part and the shift fork.

There is provided a vehicle shift control device. A shift mechanism is configured to shift and transmit rotation of a crankshaft extending in a width direction of a vehicle to a driving wheel. A shift pedal is configured to receive a shifting operation for the shift mechanism. A shift detection mechanism is configured to detect a shift instructed via the shift pedal. A shift actuator is configured to perform a shift operation of the shift mechanism, in response to a detection content of the shift detection mechanism. The shift detection mechanism includes a detection unit configured to rotate in response to the shifting operation of the shift pedal and a sensor configured to detect rotation of the detection unit. A rotary shaft of the detection unit and a rotary shaft of the sensor are arranged at different positions, as seen from a side.

There is provided a vehicle shift control device. A shift mechanism is configured to shift and transmit rotation of a crankshaft extending in a width direction of a vehicle to a driving wheel. A shift pedal is configured to receive a shifting operation for the shift mechanism. A shift detection mechanism is configured to detect a shift instructed via the shift pedal. A shift actuator is configured to perform a shift operation of the shift mechanism, in response to a detection content of the shift detection mechanism. The shift detection mechanism includes a detection unit configured to rotate in response to the shifting operation of the shift pedal and a sensor configured to detect rotation of the detection unit. A rotary shaft of the detection unit and a rotary shaft of the sensor are arranged at different positions, as seen from a side.

There is provided a motorcycle. A crankshaft extends in a width direction of the motorcycle. A counter shaft is arranged in parallel with the crankshaft. A clutch mechanism is arranged at one end of the counter shaft and is configured to transmit and disconnect rotation of the crankshaft to and from the counter shaft. A clutch actuator is configured to perform a disconnection/connection operation of the clutch mechanism. A shift mechanism is arranged below the counter shaft and is configured to shift and transmit the rotation of the crankshaft to a driving wheel. A shift actuator is configured to perform a shift operation of the shift mechanism. The shift actuator is arranged opposite to the shift mechanism in a front and rear direction of the motorcycle with the clutch actuator being interposed therebetween.