TH80818A - Fuel tanks for straddle vehicles - Google Patents

Abstract

DC60 Straddle carrier vehicle includes a main frame extending diagonally downwards and aft from the head tube, right and left secondary frames extending diagonally downwards and aft from the main frame, and seat rails extending diagonally upwards and aft from the secondary frame. A cross member extends between the seat rails. The rear seat unit is supported by a cross member and the top of the rear arm and is tilted forward. The bottom of the fuel tank extends downwards into a space established between the rear seat unit and the rear wheel. Straddle carrier vehicle includes a main frame extending diagonally downwards and aft from the head tube, a right and left secondary frame extending diagonally downwards and aft from the main frame, and seat rails extending diagonally upwards and aft from the secondary frame. A cross member extends between the seat rails. The rear seat unit is supported by a center member and the top of the rear arm and is tilted forward. The bottom of the fuel tank extends downwards into a space established between the rear seat unit and the rear wheel. The seat is set up between the rear seat unit and the rear wheels.

Claims (8)

1. A straddle-type vehicle comprising: a vehicle body including a vehicle frame having a head tube, a front frame connected to the head tube and extending diagonally downward to the rear, and a rear frame connected to the front frame and extending diagonally upward to the rear, and an engine supported by the vehicle frame, a seat supported by the rear frame, a fuel tank located under the seat, a rear arm supported by the vehicle for swinging about the pivot axis and extending rearward; rear wheels supported by the rear arms for rotation, and a single rear seat unit having its upper end supported by the rear frame, and its lower end supported by the upper portion of the rear arm positioned higher than its center in the vertical direction, a single rear seat unit inclined forward so that its upper end is positioned ahead of its lower end, with the bottom of the fuel tank extending into the gap formed by the rear seat unit, and a rear wheel with the upper end of the rear seat unit positioned forward. The bottom end of the fuel tank 2. A straddle-type vehicle comprising a vehicle body including a vehicle frame having a header tube, a front frame connected to the header tube and extending diagonally downward and rearward, and a rear frame connected to the front frame and extending diagonally upward and rearward, and an engine supported by the vehicle frame; a seat supported by the rear frame; a fuel tank located under the seat; a rear arm supported by the vehicle body for swinging about the pivot axis and extending rearward; a rear wheel supported by the rear arm for rotation; a single rear seat unit having its upper end supported by the rear frame and its lower end supported by the upper end of the rear arm positioned higher than its center in a vertical direction; a single rear seat unit inclined forward so that its upper end is positioned forward of the lower end of the support, with the bottom of the fuel tank extending into the gap formed by the rear seat unit and the rear wheel; and the air filter which is located under the front end of the seat or under or in front of the front end of the seat and in front of the rear seat unit. 3. The straddling vehicle according to claim 2, wherein the air filter is box-shaped such that its length in the vertical direction is greater than the length of any side of it in the front-to-back direction and its length in the transverse direction, and the air filter extends generally in size with the rear seat unit. 4. A straddle-type vehicle comprising a vehicle body including a vehicle frame having a header tube, a front frame connected to the header tube and extending diagonally downward and rearward, and a rear frame connected to the front frame and extending diagonally upward and rearward, and an engine supported by the vehicle frame; a seat supported by the rear frame; a fuel tank located under the seat; a rear arm supported by the vehicle for swinging about the pivot axis and extending rearward; a rear wheel supported by the rear arm for rotation; a single rear seat unit having its upper end supported by the rear frame and its lower end supported by the upper end of the rear arm positioned higher than its center in a vertical direction; a single rear seat unit inclined forward so that its upper end is positioned forward of the lower end of the support, with the bottom of the fuel tank extending into the space provided by the rear seat unit and the rear wheel; and a battery located under the seat, ahead of the fuel tank and above the rear seat. 5. A straddle-ride vehicle comprising a vehicle body including a vehicle frame having a header tube, a front frame connected to the header tube and extending diagonally downward and rearward, and a rear frame connected to the front frame and extending diagonally upward and rearward, and an engine supported by the vehicle frame; a seat supported by the rear frame; a fuel tank located under the seat; a rear arm supported by the vehicle for swinging about the pivot axis and extending rearward; a rear wheel supported by the rear arm for rotation; a single rear seat unit having its upper end supported by the rear frame and its lower end supported by the upper end of the rear arm positioned higher than its center in a vertical direction; a single rear seat unit inclined forward so that its upper end is positioned forward of the lower end of the support, with the bottom of the fuel tank extending into the space provided by the rear seat unit and the rear wheel; and wherein the front of the fuel tank has a front surface inclined rearward as it extends downward; And the bottom part of the fuel tank has a back surface that slopes forward as it extends downwards. 6. A straddle-ride vehicle comprising a vehicle body including a vehicle frame having a header tube, a front frame connected to the header tube and extending diagonally downward and rearward, and a rear frame connected to the front frame and extending diagonally upward and rearward, and an engine supported by the vehicle frame; a seat supported by the rear frame; a fuel tank located under the seat; a rear arm supported by the vehicle for swinging about the pivot axis and extending rearward; a rear wheel supported by the rear arm for rotation; a single rear seat unit having an upper end supported by the rear frame and a lower end supported by the upper end of the rear arm positioned higher than its center in a vertical direction; a single rear seat unit inclined forward so that the upper end of the support is positioned forward of the lower end of the support, with the bottom of the fuel tank extending into the gap formed by the rear seat unit and the rear wheel; And the front seat cover is positioned under and in front of the seat and has a recess that opens at the top in a raised side view that creates a space that opens at the top in front of the seat. 7. A straddling vehicle as per any of claims 1-5 and 6, wherein the lower end of the fuel tank is positioned lower than the upper end of the rear seat unit. 8. A straddling vehicle according to any of the claims 1-5 and 6, which also includes a fuel pump mounted inside the fuel tank.