TH89377A - Straddle vehicles - Google Patents

Abstract

DC60 This invention reveals a type of straddling vehicle in which clutch engagement and transmission shift control are automatic, the vehicle can be driven when the actuator is inactive, and does not require a complex and large power unit. The motorcycle (10) consists of a power unit (28). The crankcase (35) of the power unit (28) contains: a multi-gear transmission, a clutch for shifting that engages or disengages during gear changes, and a shift shaft that engages or disengages from the clutch during gear changes of the transmission. A portion of the shift shaft extends from the crankcase (35). The protruding portion of The gear shift shaft (70a) and the power shaft (81) of the actuator (75) are connected via a coupling device (61) located outside the crankcase (35). The coupling device (61) is detachable and can be connected to the protruding part of the gear shift shaft (70a) or the power shaft (81) of the actuator (75). This invention is intended to enable the driving of a carriage-mounted vehicle in which the opening and closing of the clutch and the operation and shifting of the transmission are automatic when the actuator is not operating, without structural complexity and scaling up of the power unit. Motorcycle 10 is assembled with power unit 28. The crankcase 35 of power unit 28 contains a multi-gear transmission, a gear shift clutch that is either connected or detachable at the gear shifting operation. The shift shaft, which is connected or separated from the clutch and provides for the shifting of the transmission gears, extends from the crankcase. Section 70a of the shift shaft and the output shaft 81 of the actuator 75 are connected together on the outside of the crankcase 35 with coupling device 61. Coupling device 61 is a removable connection to section 70a of the shift shaft or the output shaft 81 of the actuator 75.

Claims (19)

1. A straddling vehicle comprising a power unit with a multi-gear transmission, a clutch engaged or detached at the transmission's shifting operation, a shift shaft engaged or detached from the clutch and providing for transmission shifting by rotation, and a housing enclosing the transmission and clutch and also covering the shift shaft in such a way that a portion of the shift shaft protrudes outwards to create an overhang, an actuator comprising the output shaft, and a coupling device connecting the overhangs of the shift and output shafts on the outside of the housing, with the coupling device being removable to at least one of the overhangs of the shift and output shafts. 2. The straddle vehicle under Reputation 1 is of the type in which the power unit is mounted to the main vehicle body, the actuator is secured to the main vehicle body or the power unit, and the coupling device can be removed from the overhang of the shift axle or output axle with the actuator secured. 3. The straddling vehicle under Claim 1 is subsequently fitted with fastening devices for securing the coupling device and the extension of the changeover axle or output axle. 4. The straddling vehicle consists of a power unit with a multi-gear transmission, a clutch that is engaged or disengaged at the transmission's shifting operation, a shift shaft that is engaged or disengaged by the clutch and provides for transmission gear changes by rotation, and a housing that encloses the transmission and clutch and also covers the shift shaft in such a way that a portion of the shift shaft protrudes outwards to create an overhang, an actuator comprising the output shaft, and a coupling device that connects the protruding portions of the shift and output shafts on the outside of the housing, where the coupling device consists of several removable coupling parts. 5. The straddle vehicle under Claim 4 is of the type in which the power unit is mounted to the main vehicle chassis, the exciter is secured to the main vehicle chassis or the power unit, and the coupling device can be detached together with the exciter in the secured position. 6. The straddling vehicle as per claim 4 is subsequently fitted with fastening devices for securing the connecting parts together. 7. The straddle vehicle under Reputation 4 is of the type in which the coupling device consists of a rotating lever connected to the output shaft, a rotating arm connected to the extension of the transfer shaft, and a rod connected to the rotating lever and rotating arm, where the rod is composed of several removable rod sections that form the coupling device. 8. The straddling vehicle under Claim 1 or 4 is one in which the drive consists of a primary drive unit and a transmission mechanism located between the primary drive unit and the output shaft to transmit thrust from the primary drive unit to the output shaft and not to transmit thrust from the output shaft to the primary drive unit. 9. The straddling vehicle under Claim 1 or 4 is one in which the excitation mechanism consists of a motor, a worm gear driven by the motor, and a worm wheel actuated by the worm gear to rotate the output shaft. 10. The straddling vehicle under claim 9 is of a type in which the motor is positioned perpendicular to the width of the vehicle. 11. The straddling vehicle under Representation 1 or 4 is of the type in which the coupling device consists of a rotating lever attached to the output shaft, a rotating arm attached to the extension of the transfer shaft, and a rod attached to the rotating lever and rotating arm and extending vertically. 12. The straddling vehicle under claim 1 or 4 is one in which the driver is separated from the power unit. 13. The straddling vehicle under Representation 12 is subsequently constructed with a main frame that slopes toward the rearward lower, a seat rail that slopes toward the rearward upper of the main frame, and a rear mount that slopes toward the rearward upper of the main frame behind the seat rail, where at least the drivetrain portion is placed in the area constructed by the main frame, seat rail, and rear mount in the side view. 14. The straddling vehicle as provided for in Requisition 1 or 4 shall be fitted with a removable cover over the outer covering of at least a portion of the attachment device across the width of the vehicle. 15. The straddling vehicle under Claim 1 or 4 is of the type in which the power unit consists of a drive shaft, and the straddling vehicle consists of a rear wheel, a transmission component connecting the drive shaft and the rear wheel, and a cover separating the connection device and the transmission component. 16. A straddling vehicle as per claim 1 or 4, subsequently fitted with a main frame that slopes backward and below, where 17. The straddling vehicle under Reputation 1 or 4 is such that the coupling device consists of a first coupling connected to the output shaft of the drive shaft and a second coupling connected to the overhang of the transition shaft, where the first coupling is positioned on the inside of the second coupling in the width direction of the vehicle. 18. The straddling vehicle under Representation 1 or 4 is of the type in which the coupling device consists of a rotating beam connected to the output shaft, a rotating arm positioned on the outside of the rotating beam in the width direction and connected to the overhang of the transition shaft, and a rod connected to the rotating beam and rotating arm in a manner inclined in the width direction and tilted in the width direction. 19. The straddling vehicle under Claim 1 or 4 is of the type in which the power unit consists of an engine and a centrifugal clutch located between the engine and the clutch.