JP2013071584A - Canister arrangement structure of saddle riding type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a canister arrangement structure of a saddle riding type vehicle, which can keep an occupant's foot grounding properties proper, even when a canister is provided in a vehicle rear with a seat arranged.SOLUTION: The canister 55 for storing evaporated fuel from a fuel tank 10 is arranged below the seat 16 and between seat rails 5L and 5R. In the seat 16, a hook 166 and front-side fixing parts 165L and 165R as fixing parts for being fixed to the seat rails 5L and 5R are provided in a plurality of locations away from one another in the longitudinal direction of the vehicle. The canister 55 is arranged between the fixing parts away from each other in the longitudinal direction of the vehicle in a side view.

Description

  The present invention relates to a canister arrangement structure for a saddle-ride type vehicle.

  As a conventional technology of this type, there is known a structure in which a canister is provided on the outer side in the vehicle width direction of a seat rail of a body frame of a motorcycle that supports a seat for occupant seating (see Patent Document 1).

JP-A-8-14259

  When the canister is provided outside the seat rail in the vehicle width direction as in the conventional structure described above, the width of the rear part of the vehicle on which the seat is provided becomes large, which makes it difficult to maintain good occupant footing. There is.

  The present invention has been made in view of the actual situation, and provides a canister arrangement structure for a saddle-ride type vehicle that can maintain the occupant's footing satisfactorily even when the canister is provided at the rear portion of the vehicle where the seat is provided. With the goal.

  As a means for solving the above problems, the invention according to claim 1 of the present invention is arranged above the pair of left and right seat rails (5L, 5R) extending in the vehicle front-rear direction and the seat rails (5L, 5R). A canister arrangement structure for a straddle-type vehicle including a seat (16), wherein evaporation from a fuel tank (10) is performed below the seat (16) and between the seat rails (5L, 5R). A canister (55) for storing fuel is arranged, and the seat (16) is fixed to the seat rails (5L, 5R) at a plurality of locations separated in the vehicle front-rear direction (165L, 165R, 166), and the canister (55) is disposed between the fixed portions (165L, 165R, 166) separated from each other in the vehicle front-rear direction in a side view. To provide an arrangement structure.

  According to a second aspect of the present invention, in the canister arrangement structure for the saddle riding type vehicle according to the first aspect, the seat (16) extends from the rear of the fuel tank (10) to the rear end of the vehicle to The canister (55) is arranged below a substantially central portion in the vehicle front-rear direction of the seat (16).

  According to a third aspect of the present invention, there is provided a canister arrangement structure for a saddle-ride type vehicle according to the second aspect, wherein the seat (16) is a pair of left and right seats that contact the seat rails (5L, 5R) on a bottom plate thereof. It has a support part (168L, 168R), and the sheet support part (168L, 168R) is arranged at a position overlapping the canister (55) in a side view.

  According to a fourth aspect of the present invention, in the canister arrangement structure for the saddle riding type vehicle according to any one of the first to third aspects, a fender (80) is attached to the seat rail (5L, 5R), The fender (80) is located below the sheet (16), and the canister (55) is housed in a recess (81) provided in the fender (80).

  According to a fifth aspect of the present invention, in the canister arrangement structure for a saddle-ride type vehicle according to any one of the first to fourth aspects, the seat rails (5L, 5R) are rearward from the head pipe (3). After extending, it is connected to the upper side of the bent part of the main frame (4) that is bent and extends downward, and the pivot frame (7L, 7R) that extends downward is connected to the lower part of the main frame (4). Are connected to each other, and the pivot frame (7L, 7R) and the seat rail (5L, 5R) in the vehicle front-rear direction substantially central portion are connected by a rear frame (8L, 8R), and the canister (55) A drain pipe (69) for discharging unnecessary matter in the canister (55) is connected, and the drain pipe (69) is routed forward along the rear frame (8L, 8R). And butterflies.

According to the first aspect of the present invention, since the canister is disposed between the seat rails, the width of the rear portion of the vehicle on which the seat is provided is not increased by the arrangement of the canister. It can be maintained well. Further, since the canister is surrounded by the seat and the seat rail and is disposed between the seat fixing portions in the vehicle front-rear direction, it is possible to make the structure difficult to tamper with the canister.
According to the second aspect of the present invention, the canister is disposed at a substantially intermediate position in the vehicle front-rear direction of the seating position of the driver and the passenger and under the seat that is not easily bent by the load of the passenger. , Canister protection can be maintained well.
According to the third aspect of the present invention, the seat support portions are positioned on the left and right sides of the canister that are difficult to bend due to the load of the occupant, so that the protection of the canister can be maintained better.
According to the fourth aspect of the present invention, the recess between the fender and the canister are accommodated, so that a sufficient clearance between the seat and the canister can be secured, and the thickness of the seat can be secured. Can be maintained.
According to the fifth aspect of the present invention, the drain pipe can be easily held on the rear frame by running the drain pipe along the rear frame.

1 is a left side view of a motorcycle including a structure according to an embodiment of the present invention. Fig. 2 is a left side view of the rear part of the motorcycle. Fig. 3 is a top view of the rear part of the motorcycle of the motorcycle. Fig. 2 is a longitudinal sectional view of the seat of the same motorcycle. Fig. 2 is a longitudinal sectional view of a rear part of the motorcycle of the motorcycle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings used in the following description, the arrow FR indicates the front of the vehicle, the arrow UP indicates the upper side of the vehicle, and the arrow LH indicates the left side of the vehicle.

  A body frame 2 of the motorcycle 1 shown in FIG. 1 includes a head pipe 3 constituting a front end, a main frame 4 that extends backward from the head pipe 3 and then bends downward, and a bend of the main frame 4. A pair of left and right seat rails 5L and 5R extending rearward from the upper side of the part, a down frame 6 extending downward from the front part of the main frame 4, and a pair of left and right extending downward from the lower part of the main frame 4 Pivot frames 7L and 7R, and a pair of left and right rear frames 8L and 8R that connect the pivot frames 7L and 7R and a substantially central portion of the seat rails 5L and 5R in the vehicle front-rear direction.

  A region surrounded by the seat rails 5L and 5R, the main frame 4, and the rear frames 8L and 8R has a triangular shape in a side view. Of the members described above, members that do not appear in the figure (for example, the seat rail 5R) are indicated in parentheses in the figure for convenience of explanation. In the following description, members that do not appear in the drawings are handled in the same manner.

  A front fork 9 that supports the front wheel WF is rotatably attached to the head pipe 3, and a fuel tank 10 is attached to the main frame 4. A pair of left and right pivot plates 11L and 11R are attached to the pivot frames 7L and 7R, and a swing arm 15 is supported on the pivot plates 11L and 11R so as to be swingable up and down. A seat 16 is disposed above the seat rails 5L and 5R. The seat 16 extends from the rear of the fuel tank 10 to the rear end of the vehicle, and can be seated by a driver and a passenger, and has a long shape in the vehicle front-rear direction. In the figure, 16F represents the driver's seating area, and 16R represents the passenger's seating area.

  The front fork 9 is formed by connecting a pair of left and right forks 18L and 18R with a top bridge 19 and a bottom bridge 20 disposed below the top bridge 19, and a bar handle 21 is attached to the top bridge 19. Yes. A headlight 24 is supported in front of the top bridge 19 and the bottom bridge 20.

  An engine hanger 17 is fixed to the lower portion of the down frame 6, and a power unit 14 including the engine 12 and the transmission 13 is supported by the engine hanger 17 and the pivot plates 11L and 11R. The engine 12 includes a crankcase 25 that houses a crankshaft, a cylinder portion 26 provided at the front portion of the crankcase 25, and a cylinder head 27 provided at the cylinder portion 26, and is positioned below the main frame 4. ing.

  A piston is slidably accommodated in the cylinder portion 26, and the cylinder portion 26 is attached to the crankcase 25 so that the cylinder axis C1 is directed obliquely upward in the front direction. Here, the front part of the crankcase 25 is fixed to the engine hanger 17, and the rear part of the crankcase 25 is fixed to the pivot plates 11L and 11R.

  The swing arm 15 is composed of a pair of left and right arm members 34L, 34R, and supports a rear wheel WR rotatably at a rear end portion. The lower ends of the left and right rear cushion units 36L and 36R are attached to the rear ends of the arm members 34L and 34R, and the upper ends of the rear cushion units 36L and 36R are front and rear of the seat rails 5L and 5R. It is attached to the center of each direction.

  As shown in FIGS. 2 and 3, a pair of left and right rear step members 30 </ b> L and 30 </ b> R for a passenger to put his / her foot on are provided below the seat 16. The rear steps 30L and 30R include step body portions 31L and 31R on which passengers put their feet, and front side fixings that extend upward from the front portions of the step body portions 31L and 31R and are fixed to the front portions of the rear frames 8L and 8R. There are portions 32L, 32R and rear side fixing portions 33L, 33R that extend upward from the rear portions of the step body portions 31L, 31R and are fixed to the seat rails 5L, 5R.

  The rear side fixing portions 33L and 33R of the rear step members 30L and 30R are fixed to the seat rails 5L and 5R behind the fixing positions of the rear rail units 36L and 36R in the seat rails 5L and 5R. Further, at the position where the seat rails 5L and 5R are fixed to the upper ends of the rear cushion units 36L and 36R, in addition to the upper ends of the rear cushion units 36L and 36R, the grab rail 34 is fixed together. The grab rail 34 has an L shape in a side view and a U shape in a top view.

  As shown in FIG. 1, an intake device 40 and an exhaust device 41 are connected to the cylinder head 27 of the engine 12. The intake device 40 is connected to the rear surface of the cylinder head 27 via an intake pipe 42. The throttle body 43 is an apparatus, and an air cleaner 45 connected to the throttle body 43 via a connecting tube 44.

  The exhaust device 41 includes an exhaust pipe 46 connected to the front surface of the cylinder head 27 and a muffler 47 attached to the rear end of the exhaust pipe 46.

  As shown in FIG. 2, the air cleaner 45 is configured by housing an element (not shown) in an air cleaner case 48 (see FIG. 2), which is a housing formed of a resin material, and includes a seat rail 5L. , 5R, the main frame 4 and the rear frames 8L, 8R are disposed in a triangular region as viewed from the side. The air cleaner 45 is attached to the rear portion of the main frame 4, the front portions of the seat rails 5 </ b> L, 5 </ b> R, etc. via brackets (not shown). The air cleaner 45 is covered with a pair of left and right center covers 38L and 38R on both the left and right sides (see FIG. 1).

  As shown in FIGS. 2 and 3, a rear fender 80 extends between the seat rails 5L and 5R so as to extend along the seat rails 5L and 5R, and the rear portion is curved downward to cover the rear wheel WR from above. The rear fender 80 has a front end disposed behind the air cleaner 45 and extends rearward, and is positioned below the seat 16. Here, a recess 81 is provided in the upper part of the rear fender 80, and the canister 55 is accommodated in the recess 81. The canister 55 communicates with the fuel tank 10, adsorbs the evaporated fuel derived from the fuel tank 10 with an adsorbent, and supplies the fuel adsorbed on the adsorbent to the throttle body 43 constituting the intake system. In FIG. 2, a cross section of the sheet 16 is shown for convenience of explanation.

  The canister 55 has a cylindrical shape, and is disposed below the seat 16 and between the left and right seat rails 5L and 5R in a state where the longitudinal direction thereof, that is, the axis C2 thereof is along the vehicle width direction. The canister 55 is located in the vicinity of the connection portion between the seat rails 5L and 5R and the rear frames 8L and 8R. As shown in FIG. 3, the canister 55 includes a cylindrical portion 56 containing an adsorbent, a left end guard portion 57 that covers the left end portion of the cylindrical portion 56, and a right end guard portion 58 that covers the right end portion of the cylindrical portion 56. And.

  As shown in FIG. 5, the recess 81 is integrally formed with a pair of front and rear ribs 82, 82 extending upward, and the canister 55 is a cylindrical case attached to the outer periphery of the cylindrical portion 56. The ribs 82 and 82 are inserted into the pair of fixing portions 84 and 84 included in the 83 to be fixedly supported. The fixing portions 84, 84 protrude outward in the radial direction of the case 83, are formed so as to face each other with the center of the case 83 interposed therebetween, and have holes through which the ribs 82, 82 are inserted.

  The canister 55 is located below the substantially central portion of the seat 16 in the vehicle front-rear direction, more specifically, referring also to FIGS. 1 and 2, with respect to the vehicle seat front-rear seating region 16F and the passenger seating region 16R. Located below the border. Here, as shown in FIGS. 2 and 4, the seat 16 includes a bottom plate 161 made of a U-shaped resin material in a longitudinal section, and a cushion portion 162 fixed to the bottom plate 161 so as to cover the bottom plate 161 from the outside. It is equipped with. The bottom plate 161 includes a bottom plate body 163 that extends in the vehicle front-rear direction along the rear fender 80, and a side wall 164 that extends downward from the outer peripheral edge of the bottom plate body 163.

  As shown in FIG. 4, a pair of left and right front fixing portions 165L and 165R that protrude downward are integrally formed on the left and right sides of the front side of the side wall 164, and the rear end of the bottom plate main body 163 extends L backward. A character-shaped hook 166 is integrally formed. Further, when viewed from the side, a pair of left and right front seat support portions 167L and 167R projecting downward are integrally formed in front of the front side fixing portions 165L and 165R and at the front portion of the bottom plate main body 163, and the bottom plate main body 163 A pair of left and right rear seat support portions 168L and 168R projecting downward are integrally formed at a substantially central portion in the vehicle longitudinal direction. Further, cushions 169..., Which are elastic members, are fixed to the lower surfaces of the respective seat support portions. The cushion 169 has a rectangular parallelepiped shape and has a plurality of holes penetrating in the vehicle width direction.

  As shown in FIG. 2, the seat 16 locks the rear hook 166 to the engaging portion 86 fixed to the upper portion of the cross frame 85 that connects the rear portions of the seat rails 5L and 5R to the left and right. The front front fixing portions 165L and 165R are fastened to fastening holes 90 of a pair of left and right fixing plates 87L and 87R fixed to the seat rails 5L and 5R and the rear frames 8L and 8R so as to straddle them. Is done. In this state, the seat support portions (167L, 167R, 168L, 168R) are in contact with the upper surfaces of the seat rails 5L, 5R via the cushion 169.

  Here, the canister 55 is located between the front side fixing portions 165L and 165R and the hook 166 separated in the vehicle front-rear direction in a side view, and the cushion 169 is indicated by a two-dot chain line in FIG. A contact state with the seat rails 5L and 5R is shown. As shown in the figure, the rear seat support portions 168L and 168R are in a position overlapping the canister 55 in a side view.

  The piping of the canister 55 will be described with reference to FIGS. 2 and 3. A purge pipe 64 and a charge pipe 65 are connected to the right end guard portion 58 of the canister 55, and the canister 55 is throttled by the purge pipe 64. It is connected to the body 43 and connected to the fuel tank 10 by a charge pipe 65. The left end guard 57 of the canister 55 is connected to a drain pipe 69 for discharging unnecessary substances in the canister 55 and a fresh air introduction pipe 68 that allows the canister 55 to communicate with the atmosphere.

  The purge pipe 64 is drawn forward along the seat rail 5 </ b> R from the canister 55 and connected to the throttle body 43. A check valve (check valve) 120 is provided in the middle of the purge pipe 64 so that the evaporated fuel does not flow back from the throttle body 43 to the canister 55. The check valve 120 is fixed by a claw (not shown) provided on the upper surface of the air cleaner 45. On the other hand, the charge pipe 65 is drawn forward from the canister 55, passes under the bottom plate 161 of the seat 16, and is inserted into the fuel tank 10. The charge pipe 65 is connected to a gas-liquid separator 67 disposed above in the fuel tank 10. The gas-liquid separator 67 includes, for example, a seal member and is configured so that liquid fuel is not supplied to the charge pipe 65.

  As shown in FIG. 2, the fresh air introduction pipe 68 is drawn forward and downward along the left rear frame 8L from the canister 55, and is inserted into the rear frame 8L in the vicinity of the center in the front-rear direction of the rear frame 8L. . The drain pipe 69 is drawn from the canister 55 forward and downward along the left rear frame 8L.

  As described above, the motorcycle 1 includes the canister 55 that stores the evaporated fuel from the fuel tank 10 below the seat 16 and between the seat rails 5L and 5R. The front side fixing portions 165L and 165R, which are fixing portions fixed to the seat rails 5L and 5R, and hooks 166 are provided at a plurality of locations separated in the front-rear direction, and the canister 55 is separated in the vehicle front-rear direction in a side view. The front-side fixing portions 165L and 165R, which are fixing portions, and a hook 166 are arranged.

  In such a structure, since the canister 55 is disposed between the seat rails 5L and 5R, the width of the rear portion of the vehicle on which the seat 16 is provided is not increased by the arrangement of the canister 55. Can be maintained. Further, since the canister 55 is disposed between the seat 16, the seat rails 5L and 5R, and the fixing portion of the seat 16 in the vehicle front-rear direction, the canister 55 can be made difficult to be tampered with.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit thereof.

1 Motorcycle (saddle-ride type vehicle)
2 Body frame 4 Main frame 5L, 5R Seat rail 7L, 7R Pivot frame 8L, 8R Rear frame 10 Fuel tank 16 Seat 55 Canister 80 Rear fender (fender)
81 Concave portion 165L, 165R Front side fixing portion 166 Hook 168L, 168R Rear side seat support portion (seat support portion)

Claims (5)

A canister arrangement structure for a straddle-type vehicle comprising a pair of left and right seat rails (5L, 5R) extending in the vehicle front-rear direction and a seat (16) arranged above the seat rails (5L, 5R). ,
A canister (55) for storing evaporated fuel from a fuel tank (10) is disposed below the seat (16) and between the seat rails (5L, 5R),
The seat (16) has fixing portions (165L, 165R, 166) fixed to the seat rails (5L, 5R) at a plurality of locations separated in the vehicle longitudinal direction.
The canister (55) is disposed between the fixed portions (165L, 165R, 166) separated from each other in the vehicle front-rear direction in a side view, and the canister arrangement structure for a straddle-type vehicle. The seat (16) extends from the rear of the fuel tank (10) to the rear end of the vehicle, and is a seat on which a driver and a passenger can sit.
The canister arrangement structure for a saddle-ride type vehicle according to claim 1, wherein the canister (55) is arranged below a substantially central portion of the seat (16) in the vehicle front-rear direction. The seat (16) has a pair of left and right seat support portions (168L, 168R) in contact with the seat rails (5L, 5R) on the bottom plate,
The canister arrangement structure for a saddle-ride type vehicle according to claim 2, wherein the seat support (168L, 168R) is arranged at a position overlapping the canister (55) in a side view. A fender (80) is attached to the seat rail (5L, 5R), the fender (80) is located below the seat (16),
The canister arrangement structure for a saddle riding type vehicle according to any one of claims 1 to 3, wherein the canister (55) is accommodated in a recess (81) provided in the fender (80). The seat rails (5L, 5R) are connected to the upper side of the bent portion of the main frame (4) which extends backward from the head pipe (3) and then extends downward.
A pivot frame (7L, 7R) extending downward is connected to the lower part of the main frame (4),
The pivot frame (7L, 7R) and the substantially central portion of the seat rail (5L, 5R) in the vehicle front-rear direction are connected by a rear frame (8L, 8R),
Connected to the canister (55) is a drain pipe (69) for discharging unnecessary substances in the canister (55).
The canister arrangement of the saddle riding type vehicle according to any one of claims 1 to 4, wherein the drain pipe (69) is routed forward along the rear frame (8L, 8R). Construction.

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