Saddle type vehicle

Abstract

Provided is a saddle-ride type vehicle which eliminates necessity for an additional exterior component.　This saddle-ride type vehicle comprises: an engine (11); a vehicle-body frame portion (18) which is hollow and passes above the engine (11); and a fuel tank (41) which is of a saddle type and is mounted over and across the vehicle-body frame portion (18). The engine (11) includes a cylinder (86) which extends from a crankcase (31), and fins (88) provided in an outer peripheral portion of the cylinder (86). The width (W1) of the cylinder (86) excluding the fins (88) is narrower than the width (W2) of the vehicle-body frame portion (18) above the cylinder (86).

Description

[Technical field]

[0001] The present invention relates to a saddle-ride type vehicle. [Background technology]

[0002] Conventionally, there has been known a saddle-type vehicle equipped with a hollow body frame portion that passes above the engine (for example, Patent Document 1). This body frame portion is generally called a monocoque frame, and the frame constitutes the exterior of the vehicle body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2000-95170 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a conventional saddle-ride type vehicle, even if the body frame portion constitutes the exterior of the body, additional exterior parts such as a body cover may be required. Also, in a saddle-ride type vehicle, the location of the fuel tank becomes an issue. The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide a saddle-ride type vehicle that does not require any additional exterior parts. [Means for solving the problem]

[0005] The saddle-type vehicle includes an engine, a hollow body frame portion that passes above the engine, and a saddle-type fuel tank that is attached across the body frame portion, The engine is a horizontal engine in which the axis of the cylinder portion extends substantially horizontally in the front-rear direction of the vehicle when viewed from the side of the vehicle, the exhaust pipe of the engine extends rearward from an exhaust port provided on the lower surface of the cylinder portion, and a connecting tube connecting the air cleaner and the throttle device extends forward above the engine along the upper surface of the crankcase and the upper surface of the cylinder portion, the vehicle body frame portion has a portion in which the frame width narrows toward the head pipe and widens toward the rear, a through hole is provided near the head pipe, a support member for supporting the fuel tank is attached to the through hole, the support member includes a support shaft and a pair of plate-like members, one of the plate-like members is welded to the support shaft, the support shaft is passed through the through hole, and the other plate-like member is welded to the support shaft, the support shaft protrudes outside the body frame portion, and rubber is fitted onto the support shaft, The vehicle body frame portion has an upwardly convex shape as seen in a vehicle width direction cross section constituting an upper surface portion, An air layer is formed between the upper surface portion and the A first lower member constituting a lower surface portion is provided, the first lower member being With an air gap provided between the upper surface portion and the a fuel tank having an upwardly convex shape when viewed in a cross section in the vehicle width direction, the engine being positioned below the first lower member, the engine having a cylinder extending from a crankcase and a fin provided on an outer periphery of the cylinder, the width of the cylinder not including the fin being narrower than the width of the first lower member above the cylinder, the fuel tank having a bottom plate formed in a convex shape so as to cover the convex shape of the body frame portion, and a pair of extension portions which cover both side portions of the body frame portion when mounted on the body frame portion, The inner end surfaces of the pair of extensions are in close contact with the outer end surfaces of the rubber. It is characterized by: Effect of the Invention

[0006] This specification contains the entire contents of Japanese patent application No. 2021-058050, filed on March 30, 2021. The present invention includes a saddle-shaped fuel tank that straddles the vehicle body frame, so that the fuel tank enhances the vehicle's design and eliminates the need for additional exterior components. In addition, because the width of the cylinder excluding the fins is narrower than the width of the body frame portion above the cylinder, engine heat is not easily transferred to the fuel tank. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a left side view of a motorcycle according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a left side view of the body frame. [Diagram 3] FIG. 3 is a plan view of the body frame as viewed from above. [Figure 4] FIG. 4 is a perspective view of the body frame as viewed from the lower left side. [Diagram 5] FIG. 5 is an enlarged side view of the main tube. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. [Figure 7] FIG. 7 is a side view of the front portion of the main tube. [Figure 8] FIG. 8 is a bottom view of the front part of the main tube. [Figure 9] FIG. 9 is a perspective view of the support member. [Figure 10] FIG. 10 is a side view of the front portion of the main tube. [Figure 11] FIG. 11 is a perspective view of the front of the main tube. [Figure 12] FIG. 12 is a bottom view of the front part of the main tube. [Figure 13] FIG. 13 is a perspective view of the front of the main tube. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the description, directions such as front, rear, left, right, up and down are the same as directions relative to the vehicle body unless otherwise specified. In addition, the symbol FR in each drawing indicates the front of the vehicle body, the symbol UP indicates the upper side of the vehicle body, and the symbol LH indicates the left side of the vehicle body.

[0009] FIG. 1 is a left side view of a motorcycle 1 according to an embodiment of the present invention. The motorcycle 1 is a vehicle that includes a body frame 10, an engine 11 supported by the body frame 10, a front fork 12 that supports the front wheel 2 so as to be steerable, a swing arm 13 that supports the rear wheel 3, and a seat 14 for a passenger. The motorcycle 1 is a saddle-ride type vehicle in which a rider sits astride a seat 14. The seat 14 is provided above the rear part of the body frame 10.

[0010] FIG. 2 is a left side view of the body frame 10. FIG. 1 and 2, the body frame 10 includes a head pipe 15 provided at the front end of the body frame 10, a main frame 16 extending rearward from the head pipe 15 to the rear portion of the motorcycle 1, and a pivot frame 17 extending downward from the rear portion of the main frame 16.

[0011] The main frame 16 includes a hollow main tube 18 extending rearward from the head pipe 15, and a seat frame portion 19 extending rearward from the rear end of the main tube 18. The seat frame portion 19 has a vertical length greater than that of the main tube 18 and bulges downward relative to the main tube 18 . The pivot frame 17 extends downward from the lower end of the seat frame portion 19. The seat 14 is supported by the seat frame portion 19. The seat 14 covers the upper surface of the seat frame portion 19 from above.

[0012] The front fork 12 is supported so as to be steerable left and right via a steering shaft (not shown) inserted through a head pipe 15. The front wheel 2 is supported by an axle 2a provided at a lower end of the front fork 12. A steering handle 21 is attached to the upper end of the front fork 12.

[0013] The swing arm 13 is supported by a pivot shaft 22 that is supported by the pivot frame 17. The pivot shaft 22 is a shaft that extends horizontally in the vehicle width direction (left-right direction). The pivot shaft 22 is inserted into the front end of the swing arm 13. The swing arm 13 swings up and down about the pivot shaft 22. The rear wheel 3 is supported by an axle 3 a provided at the rear end of the swing arm 13 . A pair of left and right reactions 23 are suspended between the rear portion of the swing arm 13 and the rear portion of the seat frame portion 19.

[0014] The engine 11 is disposed below the main frame 16, rearward of the front wheel 2 and forward of the pivot frame 17. The engine 11 is an internal combustion engine including a crankcase 31 that houses a crankshaft 30 extending in the vehicle width direction, and a cylinder section 32 that extends forward from the front surface of the crankcase 31. The cylinder section 32 includes a cylinder 86 that extends forward from the crankcase 31, and a cylinder head 87 that is connected to the cylinder 86. The outer periphery of the cylinder 86 is provided with a plurality of fins 88 that extend in the circumferential direction. The engine 11 is a horizontal engine in which an axis 32a of a cylinder portion 32 extends substantially horizontally in the front-rear direction of the vehicle when viewed from the side of the vehicle. A piston (not shown) connected to crankshaft 30 reciprocates back and forth within cylinder 86 along axis 32a.

[0015] A transmission (not shown) that reduces the speed of rotation of the crankshaft 30 and outputs it is housed in the rear of the crankcase 31. The output shaft of this transmission and the rear wheel 3 are connected by a drive chain 33. An exhaust pipe 35 of the engine 11 extends rearward from an exhaust port provided on the lower surface of the cylinder portion 32. A muffler 36 is connected to the rear end of the exhaust pipe 35.

[0016] An intake device 37 that supplies intake air to the engine 11 includes an air cleaner 38, a throttle device 39 connected to the cylinder portion 32, and a connecting tube 40 that connects the air cleaner 38 and the throttle device 39. A battery 42 that supplies power to each part of the motorcycle 1 is supported by the air cleaner 38.

[0017] A step 43 on which a passenger places his / her feet is supported by the pivot frame 17 via a step holder 44 . The headlight 46 is disposed in front of the head pipe 15. The front fender 47 is attached to the front fork 12. A rear fender 48 that covers the rear wheel 3 from above is attached to the seat frame portion 19.

[0018] Fig. 3 is a plan view of the body frame 10 as viewed from above. Fig. 4 is a perspective view of the body frame 10 as viewed from the lower left side. 2 to 4, main frame 16 is formed into a hollow case shape by joining a plurality of plate members (division bodies) by welding. In detail, the main frame 16 includes a left side member 51 that constitutes the left side surface of the main frame 16, and a right side member 52 that constitutes the right side surface of the main frame 16. The left side member 51 and the right side member 52 are plate members that extend in the vertical and front-rear directions and are arranged with their plate thickness oriented in the vehicle width direction when viewed as a whole. The left side member 51 and the right side member 52 are plate members that are longer in the front-rear direction than in the vertical direction and form the main tube 18 and the seat frame portion 19. The left side member 51 and the right side member 52 are provided substantially symmetrically.

[0019] Further, the main frame 16 includes a lower member 53 that constitutes the lower surface of the main frame 16, and a rear member 54 that constitutes the rear surface of the main frame 16. The lower member 53 is a plate material that is arranged with its thickness direction oriented in the vertical direction. In detail, the lower member 53 comprises a first lower member 55 that forms the underside portion of the main tube 18 of the main frame 16, and a second lower member 56 that forms the underside portion of the seat frame portion 19 of the main frame 16.

[0020] The main tube 18 of the main frame 16 is formed into a tube shape extending in the front-to-rear direction by joining the upper part of the left side member 51 and the upper part of the right side member 52 to each other and connecting the lower part of the left side member 51 and the lower part of the right side member 52 in the vehicle width direction by a first lower member 55. The opening at the front end of the main tube 18 is closed by the rear surface of the head pipe 15.

[0021] The seat frame portion 19 of the main frame 16 is formed into a hollow case shape by connecting the lower edge of the rear of the left side member 51 and the lower edge of the rear of the right side member 52 in the vehicle width direction by a second lower member 56, and by connecting the rear end portion of the left side member 51 and the rear end portion of the right side member 52 in the vehicle width direction by a rear member 54. In a side view of the vehicle, the rear lower edge of the left member 51, the rear lower edge of the right member 52, and the second lower member 56 are inclined upward toward the rear.

[0022] An upper surface opening 57 that opens upward is provided in most of the upper surface of the seat frame portion 19. In a plan view, the upper surface opening 57 extends longer in the vehicle front-rear direction than in the vehicle width direction. The upper surface opening 57 is provided by cutting out an upper portion of the left side member 51 and an upper portion of the right side member 52. A rear internal space 58 is defined inside the seat frame portion 19 and is surrounded by the left side member 51, the right side member 52, the second lower member 56, and the rear side member 54. The rear internal space 58 is exposed upward from an upper surface opening 57. The left side member 51 and the right side member 52 are side walls that divide the rear internal space 58 in the vehicle width direction. The second lower member 56 is a lower wall that covers the rear internal space 58 from below and behind.

[0023] The rear member 54 is a plate member that integrally includes a rear wall portion 54a that constitutes the rear surface of the seat frame portion 19 and an upper wall portion 54b that constitutes the upper surface of the rear end portion of the seat frame portion 19. The rear wall portion 54a connects, in the vehicle width direction, the rear edge portion of the left side member 51 and the rear edge portion of the right side member 52. The upper wall portion 54b connects, in the vehicle width direction, the upper edge of the rear end portion of the left side member 51 and the upper edge of the rear end portion of the right side member 52. The upper surface opening 57 is located in front of the upper wall portion 54b.

[0024] An engine hanger portion 60 is provided at the front end of the seat frame portion 19, extending downward from the rear end of the main tube 18. The engine hanger portions 60 are provided below the front end portion of the left member 51 and below the front end portion of the right member 52, respectively. An upper portion of the crankcase 31 (FIG. 1) is fastened to the engine hanger portion 60 by engine fixing bolts 65a (FIG. 1) extending in the vehicle width direction.

[0025] The first lower member 55 is integrally provided with a lower wall portion 61 that constitutes the lower surface of the main tube 18, and a front wall portion 62 that extends downward from the rear end of the lower wall portion 61. The front wall portion 62 is a wall portion facing the front side of the vehicle, and connects the front edges of the left and right engine hanger portions 60 to each other in the vehicle width direction. The front wall 62 is provided with an outside air intake 63 that penetrates the front wall 62 in the front-rear direction of the vehicle. The outside air intake 63 is an opening that is provided by cutting the front wall 62 upward from the lower edge of the front wall 62. The outside air intake 63 opens toward the front of the vehicle.

[0026] On the underside of the seat frame portion 19, a portion between the front wall portion 62 and the second lower member 56 in the vehicle front-rear direction is an open portion 64 that opens downward. The open portion 64 exposes the rear internal space 58 downward.

[0027] The pivot frame 17 is located in front of the second lower member 56. The pivot frame 17 includes a pair of left and right side wall portions 17a, 17b, and a wall portion 17c that connects rear edges of the side wall portions 17a, 17b in the vehicle width direction. The pivot frame 17 has an upper edge 17d of the left side wall portion 17a joined to the lower edge of the left side member 51 of the seat frame portion 19, and an upper edge of the right side wall portion 17b joined to the lower edge of the right side member 52 of the seat frame portion 19. The wall portion 17c is inclined upward toward the rear in a side view of the vehicle. A second lower member 56 constituting the lower surface of the seat frame portion 19 extends upward and upward toward the rear, continuous with the upper end of the wall portion 17c. In a plan view, the wall portion 17c covers the rear portion of the opening 64 from below.

[0028] 1 to 4, the air cleaner 38 and the battery 42 are housed in a rear internal space 58 within the seat frame portion 19 and are located below an upper opening 57. The battery 42 is supported on the upper surface of the front part of the air cleaner 38 . The seat 14 is provided so as to be vertically rotatable (openable and closable) about a hinge portion (not shown) at the front end portion of the seat 14 .

[0029] The connecting tube 40 extends forward from the front surface of the air cleaner 38, extends forward from the rear internal space 58 through an outside air intake port 63 of the body frame 10, and is connected to the throttle device 39. The connecting tube 40 extends forward above the engine 11 along the upper surface of the crankcase 31 and the upper surface of the cylinder portion 32, and is connected to the throttle device 39. Outside air (intake air) taken into the air cleaner 38 is purified by a filter inside the air cleaner 38 and flows through a connecting tube 40 to a throttle device 39.

[0030] A fuel supply device 67 that supplies fuel to the intake port of the cylinder portion 32 is provided in front of the throttle device 39 .

[0031] An ABS (Anti-lock Brake System) modulator 25 is disposed within the main tube 18 . The ABS modulator 25 is a braking force adjustment device that prevents the front wheels 2 and the rear wheels 3 from locking by controlling the hydraulic pressure of the brake devices (not shown) of the front wheels 2 and the rear wheels 3. The ABS modulator 25 is a component that includes a pump that is driven by a motor to adjust the hydraulic pressure, a hydraulic circuit section connected to this pump, a valve that switches this hydraulic circuit section, and an electronic control section that controls the motor.

[0032] In this embodiment, as shown in FIG. 1, a saddle-shaped fuel tank 41 is attached across a main tube (body frame portion) 18 that constitutes the exterior of the vehicle body. According to this, the arrangement of the saddle-shaped fuel tank 41 enhances the design of the vehicle, so that additional exterior parts such as a body cover are not required.

[0033] A fuel tank 41 is disposed on the upper side of the main tube 18. The fuel tank 41 is a hollow container that straddles the upper side of the main tube 18 and is disposed between the head pipe 15 and the seat 14. A battery 42 and an air cleaner 38 are disposed behind the fuel tank 41. A fuel pump (not shown) disposed in the fuel tank 41 is connected to a fuel supply device 67 by a fuel hose.

[0034] FIG. 5 is an enlarged side view of the main tube 18, and FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. The main tube 18 is a hollow monocoque frame that constitutes the exterior of the vehicle body. 5, components such as the ABS modulator 25 and the battery 42 are disposed inside the main tube 18. The main tube 18 is capable of housing these components and also accommodates a fuel tank 41.

[0035] In this embodiment, motorcycle 1 includes engine 11, main tube 18 that passes above engine 11, and saddle-shaped fuel tank 41 that is attached across the upper side of main tube 18, as shown in FIG. The engine 11 includes a cylinder 86 extending forward from the crankcase 31. The cylinder 86 includes a plurality of fins 88 on its outer periphery. A width W1 of the cylinder 86 not including the fins 88 is narrower than a width W2 of the main tube 18 above the cylinder 86. Width W2 corresponds to the width of the first lower member 55 that constitutes the lower surface of the main tube 18.

[0036] In the present embodiment, the width W1 of the cylinder 86 not including the fins 88 is narrower than the width W2 of the main tube 18 above the cylinder 86. This makes it difficult for heat from the engine 11 to be transmitted to the fuel tank 41. The air layer inside the main tube 18 provides insulation against heat from the engine 11, thereby reducing the amount of evaporation in the fuel tank 41.

[0037] Further, the bottom plate 141 of the fuel tank 41 is formed into a convex shape 142 so as to cover the convex shape 118 of the main tube 18 . The fuel tank 41 is integrally provided with a pair of extensions 143, 144 that are located on both sides of the main tube 18 when the fuel tank 41 is mounted on the main tube 18. The fuel tank 41 is saddle-shaped and is installed straddling the main tube 18. 4, the bottom surface of the main tube 18 is formed of a first lower member 55. The first lower member 55 has an upwardly convex shape.

[0038] Since the first lower member 55 has an upwardly convex shape, the heat of the engine 11 remains in the first lower member 55 and is therefore less likely to be transmitted to the fuel tank 41. 5, parts such as the ABS modulator 25 and the battery 42 are disposed inside the main tube 18. In this way, heat from the engine 11 is insulated by the parts, and is less likely to be transmitted to the fuel tank 41.

[0039] The procedure for attaching the fuel tank 41 will be described with reference to FIGS. 7, a through hole 80 is formed in the main tube 18 near the head pipe 15. A support member 81 is attached to the through hole 80, as shown in FIG. 9, the support member 81 includes a support shaft 82 and plate-like members 83 and 93. The procedure for attaching the support member 81 is to weld one plate-like member 83 to the support shaft 82, pass the support shaft 82 through the through-hole 80, and weld the other plate-like member 93 to the support shaft 82, as shown in FIG. As shown in FIG. 8, the pair of plate-like members 83, 93 each have extending portions 84, 94 at the front that extend inward in the vehicle width direction.

[0040] The support shaft 82 protrudes to the outside of the main tube 18 as shown in FIGS. 8 and 10, and a rubber 85 is fitted onto the support shaft 82 as shown in FIG. As shown in FIG. 12, fuel tank 41 is fitted from rear to front (in the direction of arrow A) so that the inner end faces of extensions 143 and 144 of fuel tank 41 come into close contact with the outer end face of rubber 85 . Finally, as shown in FIG. 13, the bracket 146 at the rear of the fuel tank 41 is fixed to the main tube 18 with bolts (not shown).

[0041] 3, the frame width W of the main tube 18 narrows as it approaches the head pipe 15. A support member 81 that supports the fuel tank 41 is attached to a point P where the frame width W narrows. The support member 81 includes plate-like members 83, 93 attached to the outer side of the body frame portion 18 in the vehicle width direction, and the plate-like members 83, 93 include extending portions 84, 94 at the front thereof that extend inward in the vehicle width direction. According to this, even if main tube 18 has a shape that narrows in the width direction toward the head pipe 15 as shown in FIG. 12, the existence of extensions 84, 94 reduces the inclination in the width direction, making it easy to attach fuel tank 41.

[0042] In the present embodiment, the frame width W3 has a wide portion Q, and the engine 11 is located below the wide portion Q. This makes it difficult for heat from the engine 11 to be transmitted to the fuel tank 41.

[0043] Note that a saddle-shaped storage box for storing luggage and the like may be placed on the upper side of the main tube 18 instead of the fuel tank 41. The saddle-shaped storage box improves the design of the vehicle and eliminates the need for additional exterior parts such as a body cover. In either case, the saddle-shaped storage box can be easily mounted by drilling a through-hole 80 in advance near the head pipe 15 of the main tube 18 as shown in Fig. 7, and then simply attaching and welding a support member 81 shown in Fig. 9 to the through-hole 80.

[0044] The above-described embodiment shows one mode in which the present invention is applied, and the present invention is not limited to the above-described embodiment. In the above embodiment, a motorcycle 1 has been used as an example, but the present invention is not limited to this, and the present invention is applicable to three-wheeled saddle-ride vehicles having two front or rear wheels, and saddle-ride vehicles having four or more wheels.

[0045] [Configuration supported by the above embodiment] The above embodiment supports the following configurations.

[0046] (Configuration 1) A vehicle equipped with an engine, a hollow body frame portion that passes above the engine, and a saddle-shaped fuel tank that is attached across the body frame portion, The engine includes a cylinder extending from a crankcase and a fin provided on an outer periphery of the cylinder, A saddle-type vehicle, wherein a width of the cylinder excluding the fin is narrower than a width of the vehicle body frame portion above the cylinder. With this configuration, the width of the cylinder is narrower than the width of the body frame above the cylinder, so engine heat is less likely to be transmitted to the saddle-shaped fuel tank. Also, the air layer inside the hollow frame blocks heat, so engine heat is less likely to be transmitted to the fuel tank, and the amount of evaporation in the fuel tank is reduced.

[0047] (Configuration 2) The saddle-type vehicle according to configuration 1, wherein the vehicle body frame portion is a monocoque frame that constitutes the exterior of the vehicle body.

[0048] (Configuration 3) The saddle-type vehicle according to configuration 1 or 2, characterized in that the frame width of the body frame portion narrows as it approaches a head pipe, and a support member for supporting the fuel tank is attached to the narrowed portion. According to this configuration, since the body frame portion has a portion where the frame width is narrowed, heat from the engine is less likely to be transmitted to the saddle-shaped fuel tank.

[0049] (Configuration 4) A saddle-type vehicle as described in Configuration 3, characterized in that the support member comprises a plate-shaped member attached to the outer side of the body frame portion in the vehicle width direction, and the plate-shaped member comprises an extension portion at the front that extends inward in the vehicle width direction. With this configuration, even if the body frame portion narrows toward the head pipe, the plate-shaped member has a portion at the front that extends inward in the vehicle width direction, so that the inclination in the width direction can be reduced and a saddle-shaped fuel tank can be easily attached.

[0050] (Configuration 5) A saddle-type vehicle according to any one of configurations 1 to 4, wherein the bottom surface of the body frame portion has an upwardly convex shape. With this configuration, engine heat remains on the bottom surface of the body frame, and is therefore less likely to be transferred to the saddle-shaped fuel tank.

[0051] (Configuration 6) A saddle-type vehicle according to any one of configurations 1 to 5, characterized in that a component is disposed inside the body frame portion. With this configuration, engine heat is insulated by components within the body frame, making it more difficult for heat to be transmitted to the saddle-shaped fuel tank. [Explanation of symbols]

[0052] 11 Engine 14 sheets 15 Head pipe 18 Main tube (body frame part) 25 ABS modulator (parts) 32 Cylinder section (cylinder head) 38 Air Cleaner 41 Fuel Tank 55 First lower member 81 Support member 83 Plate-shaped members 84 Extending part 86 Cylinder 88 Finn W1 Cylinder width W2 Width of main tube above cylinder

Claims

1. The vehicle comprises an engine (11), a hollow body frame portion (18) that passes above the engine (11), and a saddle-shaped fuel tank (41) that is mounted across the body frame portion (18), The engine (11) is a horizontal engine in which an axis (32a) of a cylinder portion (32) extends substantially horizontally in the fore-and-aft direction of the vehicle in a side view of the vehicle, an exhaust pipe (35) of the engine (11) extends rearward from an exhaust port provided on the lower surface of the cylinder portion (32), a connecting tube (40) connecting an air cleaner (38) and a throttle device (39) extends forward above the engine (11) along an upper surface of the crankcase (31) and an upper surface of the cylinder portion (32), The vehicle body frame portion (18) has a frame width that narrows toward the head pipe (15) and a portion where the frame width is wider toward the rear, A through hole (80) is formed near the head pipe (15), a support member (81) for supporting the fuel tank (41) is attached to the through hole (80), the support member (81) includes a support shaft (82) and a pair of plate-like members (83, 93), one of the plate-like members (83) is welded to the support shaft (82), the support shaft (82) is passed through the through hole (80), the other plate-like member (93) is welded to the support shaft (82), the support shaft (82) protrudes outside the body frame portion (18), and rubber (85) is fitted into the support shaft (82), The vehicle body frame portion (18) includes a convex shape (118) that is convex upward when viewed in a vehicle width direction cross section constituting an upper surface portion, and a first lower member (55) that forms a lower surface portion by forming an air layer between the upper surface portion and the first lower member (55), the first lower member (55) has an upward convex shape when viewed in a vehicle width direction cross section with an air layer provided between the first lower member (55) and the upper surface portion, and the engine (11) is positioned below the first lower member (55), The engine (11) includes a cylinder (86) extending from a crankcase (31) and a fin (88) provided on an outer periphery of the cylinder (86). The width (W1) of the cylinder (86) excluding the fins (88) is narrower than the width (W2) of the first lower member (55) above the cylinder (86); The fuel tank (41) has a bottom plate (141) formed in a convex shape (142) so as to cover the convex shape (118) of the body frame portion (18), and is provided with a pair of extension portions (143, 144) that cover both side portions of the body frame portion (18) when mounted on the body frame portion (18), and inner end surfaces of the pair of extension portions (143, 144) are in close contact with the outer end surface of the rubber (85).

2. 2. The saddle-type vehicle according to claim 1, wherein the vehicle body frame portion (18) is a monocoque frame that constitutes the exterior of the vehicle body.

3. 2. The saddle-type vehicle according to claim 1, characterized in that the support member (81) comprises a plate-shaped member (83) attached to the outer side of the body frame portion (18) in the vehicle width direction, and the plate-shaped member (83) comprises an extension portion (84) at a front portion thereof extending inward in the vehicle width direction.

4. 4. The saddle-type vehicle according to claim 1, wherein a component (25) is disposed inside the body frame portion (18).

Images