TH28849B - Power units for motorcycles and motorcycles - Google Patents

Abstract

DC60 To obtain a power unit for a motorcycle with improved hub strength to stably support the footrests, the power unit 20 includes a box 23 for the centrifugal clutch cover 34 and support parts 86 that are placed under the box to support the left and right footrests 85a, 85b that extend to the sides of the box. The box has an underside 83 and a large number of hub sections 92a to 92d that extend down are made on the underside section located beneath the centrifugal clutch. The support parts are firmly fastened to the lower end surfaces 95, 97 of the hub section [selected drawing] Figure 4 in order to obtain a power unit for the motorcycle with a hub section with improved strength to firmly support the footrests. The power unit 20 includes the box 23 for the centrifugal clutch cover 34 and support parts 86 which are placed under the box to support the left and right footrests 85a, 85b extending to the sides of the box. The box has an underside 83 and a large number of hub sections 92a to 92d extending downwards are made on the underside section located under the centrifugal clutch. The support parts are firmly fastened to the lower end surfaces 95, 97 of the hub section [selected drawing] Figure 4.

Claims (9)

1. Motorbike power unit that consists of: Centrifugal clutch cover; And a support piece placed under the box to support the left and right footrests that extend to the sides of the box Where the box has underneath A large amount of the hub part is made up of the underneath under the centrifugal clutch. And the support piece is firmly fixed to the lower end surface of the hub 2. Motorbike power unit according to claim 1, where the support part consists of a matching bar connecting the left and right footrests. And the stand tray is arranged in the center of the axis of the matching rod and is firmly fixed to the bottom end surface of the hub section. 3. Motorbike power unit according to claim 1, where the box contains the first box section for the centrifugal clutch cover and the second box section to match the first box section The hubs were made respectively on the first and second box sections. And the supporting parts protruding the first and second box sections 4. A motorcycle power unit that consists of: an engine with a crankshaft and a centrifugal clutch housing placed behind the crankshaft; A continuously variable transmission driven by a belt provided by the engine box and with the main flywheel driven by the crankshaft. The second flywheel is aligned on the same axis as the centrifugal clutch. And belt for transmission of torque from the main flywheel to the second flywheel; And the under-box support parts to support the left and right footrests that extend to the sides of the engine and the belt-type continuously variable transmission. Where the box has underneath A large number of downhanging hub sections is made on the underbody section under the centrifugal clutch. And the support piece is firmly fixed to the lower end surface of the hub 5.Motorcycle power unit according to claim 4, where the second flywheel is larger in diameter than the main flywheel. And the centrifugal clutch is generally the same diameter as the second flywheel. 6. Motorcycle power unit according to claim 4, where the supporting parts consist of a pair of guides that connect between the left and right footrests. And the set tray was arranged in the center of the axis of the matching rod. And firmly attached to the bottom end of the hub And matching rods that extend horizontally under the flywheel at Two of the belt-type continuously variable transmissions. 7. Motorbike consisting of: frame; The power unit is suspended from the frame and which has a housing for the centrifugal clutch cover; and A support piece that is placed under the power unit's box to support the left and right foot rests that extend to the sides of the box. Where the box has underneath A large number of downhanging hub sections is made on the underbody section under the centrifugal clutch. And the support piece is firmly fixed to the lower end surface of the hub 8. Motorcycle according to claim 7, where the power unit consists of an engine with a box-matched cylinder. And the belt-driven continuous variable powertrain was provided by the engine, the belt-driven continuous variable transmission had the main flywheel driven by the engine, the second flywheel was arranged. They are arranged in the same axial direction as the centrifugal clutch. And belt for transmission of torque from the main flywheel to the second flywheel. The second flywheel has a larger diameter than the main flywheel. And the centrifugal clutch is generally the same diameter as the second flywheel. 9. Motorcycle according to claim 8, where the support parts consist of matching bars that connect between left and right footrests. And the stand tray that was arranged in the center of the axis of the matching rod And firmly attached to the end surface below the hub compartment And the matching rod extends horizontally under the second flywheel of the belt-type continuously variable transmission.