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US 2003/0111283 A1Published application
Frame assembly for scooter-type vehicle
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsTakeo Hakamata, Shunichi Itajiki
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AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsTakeo Hakamata, Shunichi Itajiki
Estimating the term…
A frame assembly for a scooter-type vehicle having at least one front wheel, at least one rear wheel and a vehicle body. The frame assembly includes a head tube, which supports a front wheel suspension assembly of the vehicle. An upper frame extends from the head tube to a rearward end of the vehicle body. A swingarm is pivotally supported by the upper frame and supports a rear wheel of the vehicle. The frame assembly may include a lower frame removeably coupled to the upper frame and defining a space therebetween. The lower frame preferably supports at least one component of the scooter-type vehicle in the space, such as a fuel tank, for example. In one arrangement, the upper frame includes a forward portion and a rearward portion. The rearward portion includes at least one elongated, channel-shaped frame member having a forward section and a rearward section. Preferably, the forward section has an open side facing in a lateral direction and the rearward section has an open side facing in a vertical direction.
A scooter-type vehicle comprising at least one front wheel, at least one rear wheel, a vehicle body and a frame assembly, the frame assembly comprising a head tube, an upper frame extending from the head tube to a rearward portion of the vehicle body, and a lower frame, the vehicle additionally comprising a swingarm pivotally supported by the upper frame, the swingarm supporting the at least one rear wheel and a power unit configured to drive the at least one rear wheel, wherein the lower frame includes a forward end portion, a rearward end portion and an intermediate portion extending between the forward and rearward end portions, the forward end portion and the rearward end portion of the lower frame being removeably coupled to the upper frame, the lower frame being shaped such that the intermediate portion of the lower frame is spaced below the upper frame, the lower frame supporting at least one component of the vehicle between the lower frame and the upper frame.
A scooter-type vehicle comprising at least one front wheel, at least one rear wheel, a vehicle body and a frame assembly, the vehicle body having a seat assembly and a footrest portion, the frame assembly comprising a head tube, an upper frame constructed of an aluminum alloy material and extending from the head tube to a rearward portion of the vehicle body, and a lower frame spaced below the upper frame, a forward end and a rearward end of the lower frame being removeably coupled to the upper frame, the vehicle additionally comprising a swingarm pivotally supported by the upper frame, the swingarm supporting the at least one rear wheel and a power unit configured to drive the at least one rear wheel, wherein the upper frame comprises a forward portion extending generally between the head tube and the footrest portion and a rearward portion extending generally rearward from the footrest portion, the forward portion of the upper frame comprising a pair of laterally spaced down tubes, each of the down tubes having a continuous outer wall defining an enclosed cross-sectional area.
A scooter-type vehicle comprising at least one front wheel, at least one rear wheel, a vehicle body and a frame assembly, the vehicle body having a seat assembly and a footrest portion, the frame assembly comprising a head tube, a longitudinally extending frame member constructed of an aluminum alloy material and extending from the head tube to a rearward portion of the vehicle body, wherein the frame member comprises a forward portion extending generally between the head tube and the footrest portion and a rearward portion extending rearward from generally the footrest portion, the forward portion of the frame member comprising a pair of laterally spaced down tubes, each of the down tubes having a continuous outer wall defining an enclosed cross-sectional area, and the rearward portion of the frame member comprises a front section and a rear section, the front section comprising at least one channel-shaped member having an open side facing a generally lateral direction, the rear section comprising at least one channel-shaped member having an open side facing a generally vertical direction.
Dependencies are inferred from the claim text.