Straddled vehicle

Abstract

This invention provides a straddle-type vehicle capable of suppressing the narrowing of the storage space of a storage box located below the seat. The straddle-type vehicle 1 of this invention includes a body frame 2, leg guards 19, a seat 6, a storage box 9, footrests 20, a tilting section 21, a fuel tank 25, and a suction canister 29. The body frame 2 includes a head tube 11. The leg guards 19 are disposed behind the head tube 11. The storage box 9 is disposed below the seat 6. The footrests 20 are disposed between the leg guards 19 and the seat 6. The tilting section 21 includes a footrest. The tilting section 21 is disposed between the leg guards 19 and the footrests 20, and tilts forward and upward relative to the footrests 20. The fuel tank 25 is disposed below the footrests 20. The suction canister 29 is disposed below the tilting section 21 and connected to the fuel tank 25.

Description

[Technical Field]

[0001] This invention relates to a straddle-type vehicle. [Previous Technology]

[0002] Previously, a straddle-type vehicle equipped with an adsorption canister for storing evaporated fuel from a fuel tank was known (see Patent Document 1). In the straddle-type vehicle of Patent Document 1, a storage box is provided below the seat, and the adsorption canister is disposed below the storage box. [Prior Art Documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent No. 5774129 [Summary of the Invention]

[0004] [Problem to be solved by the invention] When the adsorption can is placed below the storage box, it is necessary to ensure space below the storage box for placing the adsorption can, which may narrow the storage space of the storage box.

[0005] The objective of this invention is to provide a straddle-type vehicle capable of suppressing the narrowing of the storage space of a storage compartment located below the seat. [Technical Means for Solving the Problem]

[0006] One embodiment of the straddle-type vehicle of the present invention includes a body frame, leg guards, a seat, a storage compartment, foot pedals, a tilting section, a fuel tank, and a suction canister. The body frame includes a head tube. The leg guards are disposed behind the head tube. The storage compartment is disposed below the seat. The foot pedals are disposed between the leg guards and the seat. The tilting section includes a footrest. The tilting section is disposed between the leg guards and the foot pedals and tilts forward and upward relative to the foot pedals. The fuel tank is disposed below the foot pedals. The suction canister is disposed below the tilting section and connected to the fuel tank.

[0007] In this type of straddle-type vehicle, the suction can is provided below the inclined section between the shin guards and the footrests. Therefore, compared with the case where the suction can is provided below the storage box, the storage space of the storage box located below the seat can be prevented from becoming narrower. Furthermore, the space below the inclined section including the footrest can be effectively utilized, and the rider can place his feet not only on the footrests but also on the footrest of the inclined section.

[0008] The vehicle frame may also include a subframe disposed below the inclined portion and supporting the footrest. The adsorption can also be fixed to the subframe. In this case, the footrest can be supported by the subframe, and the adsorption can be fixed to the subframe.

[0009] The adsorption tank can also be arranged at an angle along the footrest surface. In this case, the space below the inclined part can be utilized efficiently.

[0010] At least a portion of the adsorption tank may also be positioned above the foot pedal. In this case, water immersion in the adsorption tank can be prevented.

[0011] The straddle-type vehicle may further include: a fuel line located in front of the leg guards and connected to the fuel tank; and a charging tube connected to both the fuel line and the adsorption canister. A portion of the charging tube may also be located below the sloping section. In this case, the space below the sloping section can be effectively utilized as space for the charging tube.

[0012] The straddle-type vehicle may further include: an auxiliary storage tank disposed to the side of the head tube; and a fuel line connecting the auxiliary storage tank to the fuel tank. The adsorption canister may also overlap with the auxiliary storage tank when viewed from above the vehicle. In this case, the space below the auxiliary storage tank can be effectively utilized as space for arranging the adsorption canister. [Effects of the Invention]

[0013] According to the present invention, a straddle-type vehicle is provided that can suppress the narrowing of the storage space of the storage box disposed below the seat.

Implementation Method

[0015] Hereinafter, the straddle-type vehicle of the embodiment will be described with reference to the drawings. Figure 1 is a side view of the straddle-type vehicle 1 of the embodiment. Figure 2 is a partial side view of the straddle-type vehicle 1 of the embodiment. The straddle-type vehicle 1 of this embodiment is a scooter. As shown in Figure 1, the straddle-type vehicle 1 includes a frame 2, a body shell 3, a steering device 4, a front wheel 5, a seat 6, a power unit 7, a rear wheel 8, and a storage box 9. Furthermore, in the following description, the front-rear-left-right directions of the straddle-type vehicle 1 refer to the front-rear-left-right directions as viewed from the perspective of the rider sitting on the seat 6.

[0016] As shown in Figures 1 and 2, the vehicle body frame 2 includes a head tube 11, a lower frame 12, a lower frame 13, and a rear frame 14. The head tube 11 is positioned at the center of the vehicle in the vehicle width direction. The head tube 11 is inclined forward and downward when viewed from the side of the vehicle. The lower frame 12 extends downward from the head tube 11. The lower frame 13 is connected to the lower part of the lower frame 12.

[0017] The lower frame 13 includes a lower left frame 13a and a lower right frame (not shown). The lower left frame 13a extends to the left and rear from the lower frame 12. The lower right frame extends to the right and rear from the lower frame 12. The lower right frame has a shape that is symmetrical to the lower left frame 13a.

[0018] The rear frame 14 extends rearward and upward from the lower frame 13. The rear frame 14 includes a left rear frame 14a and a right rear frame (not shown). The left rear frame 14a extends rearward and upward from the rear end of the lower left frame 13a. The right rear frame extends rearward and upward from the rear end of the lower right frame. The right rear frame has a shape that is symmetrical to the left rear frame 14a.

[0019] The vehicle body shell 3 includes a front shell 16, a bottom shell 17, a rear shell 18, a leg guard 19, a foot pedal 20, and a tilting section 21. The front shell 16 is positioned in front of the head tube 11 and the lower frame 12.

[0020] The bottom housing 17 is disposed between the front housing 16 and the rear housing 18. The bottom housing 17 is disposed in such a way that it covers the area around the lower frame 13. The bottom housing 17 overlaps with the lower frame 13 when viewed from above in the vehicle.

[0021] The rear housing 18 is disposed below the seat 6. The rear housing 18 is disposed in such a way that it covers the area around the rear frame 14.

[0022] The leg guard 19 is positioned behind the front housing 16. The leg guard 19 is positioned behind the head tube 11 and the lower frame 12. The leg guard 19 covers the area behind the head tube 11 and the lower frame 12. The leg guard 19 is positioned in front of the seat 6.

[0023] The shin guard 19 includes a left shin guard 19a, a right shin guard (not shown), and a central rear portion 19b. The left shin guard 19a is positioned to the left of the central rear portion 19b. The left shin guard 19a extends forward and downward. The right shin guard is positioned to the right of the central rear portion 19b. The right shin guard extends forward and downward. The central rear portion 19b is positioned at the center of the vehicle in the vehicle width direction. The central rear portion 19b extends in the vehicle width direction. The central rear portion 19b is positioned between the left shin guard 19a and the right shin guard, and protrudes rearward. The lower rear end of the central rear portion 19b is connected to the foot pedal 20.

[0024] The footrest 20 is provided for the rider to place their feet. The footrest 20 is disposed on the bottom housing 17. The footrest 20 overlaps with the lower frame 13 in a top view of the vehicle. The footrest 20 is disposed above the lower frame 13. The footrest 20 is disposed between the shin guard 19 and the seat 6. The footrest 20 is disposed between the shin guard 19 and the rear housing 18. The footrest 20 is disposed in a position lower and forward than the seat 6. The footrest 20 extends in the front-rear direction. The footrest 20 extends rearward from the lower end of the shin guard 19. The footrest 20 has a generally flat shape.

[0025] The inclined portion 21 is disposed between the shin guard 19 and the foot pedal 20. The inclined portion 21 is connected to the shin guard 19. In this embodiment, the inclined portion 21 and the shin guard 19 are integral. The inclined portion 21 may also be integral with the foot pedal 20. The inclined portion 21 is disposed in front of the foot pedal 20. The inclined portion 21 is inclined forward and upward relative to the foot pedal 20. The inclined portion 21 extends forward and upward from the front end of the foot pedal 20. The inclined portion 21 is disposed to the side of the central rear portion 19b. The inclined portion 21 overlaps with the lower frame 12 in a side view of the vehicle. The inclined portion 21 is disposed further forward than the lower frame 13. The inclined portion 21 is disposed further forward than the bottom outer shell 17.

[0026] The tilting portion 21 includes a left tilting portion 21a and a right tilting portion (not shown). The left tilting portion 21a is disposed behind the left shin guard 19a. The left tilting portion 21a is disposed to the left side of the central rear portion 19b. The left tilting portion 21a extends rearward and downward from the lower end of the left shin guard 19a. The left tilting portion 21a extends forward and upward from the front end of the foot pedal 20.

[0027] The left tilting portion 21a includes a left footrest 21b (an example of a footrest). The left footrest 21b is formed by the upper surface of the left tilting portion 21a. The left footrest 21b is provided for the rider to place their feet. The left footrest 21b is tilted forward and upward relative to the pedal 20. The left footrest 21b is formed by a flat surface that tilts forward and upward. The left footrest 21b is arranged to be connected to the pedal 20 in the front-rear direction.

[0028] The right-sloping portion is located behind the right leg guard. The right-sloping portion is located to the right of the central rear portion 19b. The right-sloping portion has a shape that is symmetrical to the left-sloping portion 21a. Therefore, the right-sloping portion includes a right footrest surface that has a shape that is symmetrical to the left footrest surface 21b.

[0029] The steering mechanism 4 is supported on the vehicle frame 2 in a way that allows it to rotate left and right. The steering mechanism 4 includes a front fork 4a and a handlebar member 4b. The front fork 4a supports the front wheel 5 in a manner that allows it to rotate. The handlebar member 4b is connected to the upper end of the front fork 4a.

[0030] The seat 6 is positioned behind the leg guard 19. The seat 6 is positioned above the rear frame 14.

[0031] The power unit 7 is located below the seat 6. The power unit 7 has a unit swing-type structure. The power unit 7 supports the rear wheel 8 in a manner that enables it to rotate.

[0032] The storage box 9 is positioned below the base 6. The storage box 9 is covered by the rear outer shell 18. The opening of the storage box 9 faces upward and is covered by the base 6.

[0033] As shown in Figure 2, the straddle-type vehicle 1 includes a fuel tank 25, a fuel inlet 26, an auxiliary tank 27, a fuel pipe 28, an adsorption tank 29, and a filling pipe 30.

[0034] The fuel tank 25 is located below the foot pedal 20. The fuel tank 25 is located between the lower left frame 13a and the lower right frame. The fuel tank 25 is fixed to the vehicle body frame 2. The fuel tank 25 is located behind the lower end of the lower frame 12. The fuel tank 25 is located further rearward than the inclined portion 21.

[0035] Fuel inlet 26 is located on the leg guard plate 19. Fuel inlet 26 is located on the left side of the head tube 11 and the lower frame 12. Fuel inlet 26 is connected to the auxiliary tank 27. Fuel inlet 26 is connected to the fuel tank 25 via a secondary pipe (not shown).

[0036] The auxiliary tank 27 is positioned below the fuel inlet 26. The auxiliary tank 27 is positioned to the left of the head tube 11. In a side view of the vehicle, the auxiliary tank 27 overlaps with the head tube 11 and the lower frame 12. In a top view of the vehicle, the auxiliary tank 27 overlaps with the inclined section 21. In this embodiment, the auxiliary tank 27 overlaps with the left inclined section 21a in a top view of the vehicle. The auxiliary tank 27 is positioned in front of the leg guard 19. The auxiliary tank 27 is positioned higher than the inclined section 21. The auxiliary tank 27 is positioned further inside the vehicle width direction than the inclined section 21.

[0037] Fuel pipe 28 connects auxiliary tank 27 to fuel tank 25. Fuel pipe 28 is positioned to the left of lower frame 12. Fuel pipe 28 overlaps with lower frame 12 in a side view of the vehicle. Fuel pipe 28 is positioned in front of the central rear portion 19b of leg guard plate 19.

[0038] Figure 3 is a partial front view of the straddle-type vehicle 1 with the front shell 16 and bottom shell 17 removed. Figure 4 is a partial bottom view of the straddle-type vehicle 1 with the front shell 16 and bottom shell 17 removed.

[0039] As shown in Figures 2 to 4, the adsorption tank 29 is positioned below the left inclined portion 21a of the inclined portion 21. The entire adsorption tank 29 overlaps with the left inclined portion 21a of the inclined portion 21 when viewed from above by the vehicle. The adsorption tank 29 overlaps with the auxiliary box 27 when viewed from above by the vehicle. The adsorption tank 29 is positioned further forward and above the lower frame 13. The adsorption tank 29 is positioned further forward than the lower frame 12. The adsorption tank 29 does not overlap with the lower frame 12 when viewed from the side by the vehicle. The adsorption tank 29 is positioned further forward than the fuel pipe 28. The adsorption tank 29 does not overlap with the fuel pipe 28 when viewed from the side by the vehicle.

[0040] The adsorption tank 29 is connected to the fuel tank 25. The adsorption tank 29 is connected to the fuel tank 25 via the auxiliary tank 27 and the fuel pipe 28. The adsorption tank 29 is positioned further forward and above the fuel tank 25. The adsorption tank 29 is positioned further outward in the vehicle width direction than the fuel tank 25.

[0041] The adsorption canister 29 has a cylindrical shape. The adsorption canister 29 extends forward and upward in a side view of the vehicle. The rear end of the adsorption canister 29 is positioned lower than the front end of the adsorption canister 29. At least a portion of the adsorption canister 29 is positioned higher than the foot pedal 20. The front end of the adsorption canister 29 is positioned higher than the foot pedal 20. The rear end of the adsorption canister 29 is positioned lower than the foot pedal 20. The adsorption canister 29 is positioned higher than the rotation axis of the front wheel 5. The adsorption canister 29 is inclined along the left footrest surface 21b. The central axis of the adsorption canister 29 extends in a direction along the left footrest surface 21b in a side view of the vehicle.

[0042] The filling tube 30 has a tube shape. The filling tube 30 extends in the vertical direction. The filling tube 30 connects the adsorption tank 29 and the auxiliary tank 27. The filling tube 30 is connected to the fuel pipe 28 via the auxiliary tank 27. The filling tube 30 may also be configured to connect the adsorption tank 29 and the fuel pipe 28. The filling tube 30 is positioned further to the left than the head tube 11. In this embodiment, the filling tube 30 is positioned further to the left than the head tube 11.

[0043] The filling tube 30 is positioned further forward than the lower frame 12. A portion of the filling tube 30 is positioned below the left inclined portion 21a of the inclined portion 21. A portion of the filling tube 30 overlaps with the left inclined portion 21a of the inclined portion 21 when viewed from above by the vehicle. A portion of the filling tube 30 extends along the left inclined portion 21a when viewed from above by the vehicle. A purification tube 31 is connected to the adsorption tank 29. The purification tube 31 has a tube shape. The purification tube 31 extends in the front-rear direction. The purification tube 31 extends rearward from the adsorption tank 29 along the lower frame 13. A portion of the purification tube 31 overlaps with the left inclined portion 21a of the inclined portion 21 when viewed from above by the vehicle.

[0044] The vehicle frame 2 includes a subframe 33. The subframe 33 is positioned above the lower frame 13. The subframe 33 is positioned in front of the lower frame 12 and the leg guard 19. The subframe 33 is positioned below the inclined portion 21. The subframe 33 overlaps with the left inclined portion 21a and the right inclined portion in a top-down view of the vehicle. A portion of the subframe 33 is inclined along the left inclined portion 21a in a side-view view of the vehicle. A portion of the subframe 33 is inclined along the right inclined portion in a side-view view of the vehicle. The subframe 33 supports the left footrest 21b and the right footrest.

[0045] The sub-frame 33 is fixed to the lower frame 12 via the bracket 34 shown in Figure 3. The sub-frame 33 is fixed to the lower frame 13. The sub-frame 33 is fixed to the lower left frame 13a via the bracket 35 shown in Figure 2. The sub-frame 33 is fixed to the lower right frame via a bracket not shown.

[0046] As shown in Figure 5, the adsorption tank 29 is fixed to the sub-frame 33. The adsorption tank 29 includes a fixing part 29a. The fixing part 29a protrudes upward from the outer peripheral surface of the adsorption tank 29. The fixing part 29a includes a through hole in the left-right direction. The fixing part 29a of the adsorption tank 29 is fastened to the sub-frame 33 by bolts.

[0047] In the straddle-type vehicle 1 of the present embodiment described above, an adsorption canister 29 is disposed below the inclined portion 21 located between the leg guard 19 and the footrest 20. Therefore, compared to the case where the adsorption canister 29 is disposed below the storage box 9, the narrowing of the storage space of the storage box 9 disposed below the seat 6 can be prevented. Furthermore, the space below the inclined portion 21, including the left footrest 21b, can be effectively utilized, and not only can the rider place his feet on the footrest 20, but also on the left footrest 21b of the left inclined portion 21a.

[0048] The above describes one embodiment of the present invention, but the present invention is not limited to the above embodiment and various modifications can be made without departing from the spirit of the invention.

[0049] The straddle-type vehicle 1 is not limited to a scooter, but may also be other types of vehicles such as a chassis type. The shape of the adsorption tank 29 may also be changed. The adsorption tank 29 may also be configured to be located below the right-hand inclined portion of the inclined portion 21. [Simplified Explanation of the Diagram]

[0014] Figure 1 is a left-side view of the straddle-type vehicle according to the embodiment. Figure 2 is a partial left-side view of the straddle-type vehicle with a portion of the vehicle body shell removed. Figure 3 is a partial front view of the straddle-type vehicle with a portion of the vehicle body shell removed. Figure 4 is a partial bottom view of the straddle-type vehicle with a portion of the vehicle body shell removed. Figure 5 is a partial enlarged view of Figure 2.

Claims

1. A straddle-type vehicle comprising: a body frame including a head tube; shin guards disposed behind the head tube; a seat disposed behind the shin guards; a storage compartment disposed below the seat; footrests disposed between the shin guards and the seat; a tilting portion including a footrest disposed between the footrests and the shin guards, tilting forward and upward relative to the footrests; a fuel tank disposed below the footrests; and a suction canister disposed below the tilting portion and connected to the fuel tank; wherein the body frame includes a subframe disposed below the tilting portion and supporting the footrest, and the suction canister is fixed to the subframe.

2. The straddle-type vehicle as claimed in claim 1, wherein the adsorption tank is disposed at an angle along the footrest surface.

3. The straddle-type vehicle as claimed in claim 1, wherein at least a portion of the aforementioned adsorption tank is positioned above the aforementioned foot pedal.

4. The straddle-type vehicle as claimed in claim 1 further comprises: a fuel pipe disposed in front of the aforementioned leg guards and connected to the aforementioned fuel tank; and a filling pipe connected to the aforementioned fuel pipe and the aforementioned adsorption tank; a portion of the aforementioned filling pipe is disposed below the aforementioned inclined portion.

5. The straddle-type vehicle as claimed in claim 1, further comprising: an auxiliary box disposed to the side of the head tube; and a fuel pipe connecting the auxiliary box to the fuel tank; wherein the adsorption tank overlaps with the auxiliary box in a top view of the vehicle.

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