Saddle type vehicle

Abstract

The utility model provides a saddle type vehicle, which realizes the improvement of appearance design, countermeasures against flying stones and the like during driving, ensures the mounting rigidity of a bottom cover, inhibits the upsizing of the bottom cover, and is easy to guide driving wind to a connecting body. The saddle type vehicle is provided with a bottom cover bracket (90) and a connecting body connecting a lower frame (33) and a pivot frame (32), the bottom cover (54) is provided with a central bottom cover (60) and right and left side bottom covers (70, 80), the bottom cover bracket (90) is provided with a frame fastening part (92) and a pair of left and right connecting body fastening parts, and a concave shape (90a) of the bottom cover bracket (90) and a concave shape (54a) of the bottom cover (54) form an opening shape (S1) when the vehicle body is viewed from the front. The frame fastening section (92) is provided above the connector fastening section.

Description

Technical Field

[0001] The utility model relates to a saddle-riding type vehicle. Background Art

[0002] In the past, in saddle-riding type vehicles, such a structure is known: in a spine-type frame in which a lower frame and a pivot frame are separated, a bottom cover covering a connecting body connecting the lower frame and the pivot frame is supported on the lower frame (for example, refer to Patent Document 1). In Patent Document 1, an engine as a connecting body is supported on the lower frame and the pivot frame, and a bottom fairing corresponding to the bottom cover is supported on the lower end of the lower frame. The bottom fairing of Patent Document 1 has left and right side parts and a connecting part connecting the left and right side parts on the front side, the connecting part is fixed to the lower end of the lower frame by a bracket, and the side part is fixed to the bottom surface of the engine via a bracket. The upper end of the connecting part of the bottom fairing of Patent Document 1 is located above the bottom surface of the engine when viewed from the front.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent No. 5455509 Utility Model Content

[0006] Technical problems to be solved by the utility model

[0007] However, in a saddle-riding type vehicle, in order to improve the appearance design and to take measures against flying stones during driving, it is desirable to provide an undercover, but at the same time, it is desirable to ensure the mounting rigidity of the undercover, suppress the enlargement of the undercover, and guide the running wind to the connecting body. In particular, when the connecting body is prone to high temperature, it is desirable to guide the running wind to the connecting body sufficiently.

[0008] The utility model is completed in view of the above situation, and its purpose is to improve the appearance design of a saddle-riding type vehicle in which the bottom cover is installed on a backbone frame, take measures against flying stones during driving, ensure the installation rigidity of the bottom cover, suppress the enlargement of the bottom cover, and easily guide the running wind to the connecting body.

[0009] Means for solving technical problems

[0010] The saddle-riding type vehicle is provided with an undercover mounted on a backbone frame, the backbone frame comprising: a main frame extending rearward from a front upright tube; a lower frame extending downward from the front upright tube; and a pivot frame extending downward from the rear end of the main frame, the saddle-riding type vehicle comprising: a connecting body connecting the lower frame and the pivot frame; and an undercover support frame connecting the undercover with a vehicle body, the undercover comprising a central undercover, a right side undercover and a left side undercover, the undercover support frame comprising a frame fastening portion fastened to the lower frame and a pair of left and right connecting body fastening portions fastened to the connecting body, the undercover support frame presenting a concave shape recessed upward when the vehicle body is viewed from the front, the undercover presenting a concave shape recessed downward, the concave shape of the undercover support frame and the concave shape of the undercover form a closed opening shape when the vehicle body is viewed from the front, and the frame fastening portion is provided at a position above the connecting body fastening portion.

[0011] In the above configuration, when the vehicle body is viewed from the front, the bottom surface portion of the connecting body may be located inside the opening shape.

[0012] Furthermore, in the above structure, the connecting body may be a power unit.

[0013] Furthermore, in the above configuration, the power unit may be an internal combustion engine.

[0014] In addition, in the above structure, it is also possible that, when observing the vehicle body from the side, the central undercover is located at a position rearward of the front edge of the side undercover, the front surface of the central portion of the central undercover in the vehicle width direction is inclined upward as it approaches the rear of the vehicle body, the central undercover is formed to become narrower in width as it approaches the bottom of the vehicle body, and the left and right side undercovers are inclined inward in the vehicle width direction as they approach the bottom of the vehicle body.

[0015] Utility Model Effect

[0016] In a saddle-riding type vehicle in which an undercover is mounted on a backbone frame, it is possible to improve the exterior design, take measures against flying stones during driving, ensure the mounting rigidity of the undercover, suppress the undercover from becoming larger, and easily guide the driving wind toward the connection body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side view of the saddle-ride type vehicle according to the embodiment of the present invention.

[0018] Figure 2 It is a perspective view of the vehicle frame according to the embodiment.

[0019] Figure 3 It is a front view of the peripheral part of the power unit according to the embodiment.

[0020] Figure 4It is a left side view of the periphery of the power unit according to the embodiment.

[0021] Figure 5 It is a bottom view of the peripheral part of the power unit according to the embodiment.

[0022] Figure 6 It is an exploded perspective view of the undercover and the undercover stay according to the embodiment.

[0023] Figure 7 It is a top view of the undercover and the undercover stay according to the embodiment.

[0024] Figure 8 It is a perspective view of the undercover and the undercover stay according to the embodiment, as seen from the rear.

[0025] Description of symbols

[0026] 10: Saddle-riding vehicles;

[0027] 11: Frame (spine frame, body);

[0028] 12: Engine (power unit, internal combustion engine, connector, vehicle body);

[0029] 18: front riser;

[0030] 12a: bottom part;

[0031] 31: Main frame;

[0032] 32: pivot frame;

[0033] 33: lower frame;

[0034] 54: bottom cover;

[0035] 54a: concave shape;

[0036] 60: Central bottom cover;

[0037] 61: front surface cover (front surface);

[0038] 70: side bottom cover;

[0039] 72a: front wall portion (front edge);

[0040] 80: side bottom cover;

[0041] 82a: front wall portion (front edge);

[0042] 90: bottom cover support;

[0043] 90a: concave shape;

[0044] 92: frame fastening portion;

[0045] 97: unit fastening portion (connector fastening portion);

[0046] 98: unit fastening portion (connector fastening portion);

[0047] S1: Opening shape. DETAILED DESCRIPTION

[0048] Hereinafter, the embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in the description, the description of directions such as front, back, left, right, and up and down is assumed to be the same as the direction relative to the vehicle body unless otherwise specified. In addition, the number "front" shown in each figure indicates the front of the vehicle body, the number "up" indicates the top of the vehicle body, and the number "left" indicates the left of the vehicle body.

[0049] [Implementation Method]

[0050] Figure 1 It is a side view of the saddle-ride type vehicle 10 according to the embodiment of the present invention.

[0051] The saddle-riding type vehicle 10 is a vehicle including a frame 11 , a power unit 12 supported by the frame 11 , a front fork 14 supporting a front wheel 13 so as to be steerable, a swing arm 16 supporting a rear wheel 15 , and a seat 17 for a passenger.

[0052] The saddle-ride type vehicle 10 is a vehicle in which a passenger sits on a seat 17 in a straddling manner. The seat 17 is provided above a rear portion of a vehicle frame 11.

[0053] The vehicle frame 11 includes a front stem pipe 18 provided at the front end of the vehicle frame 11, a front frame 19 located behind the front stem pipe 18, and a rear frame 20 located behind the front frame 19. The front end of the front frame 19 is connected to the front stem pipe 18.

[0054] The seat 17 is supported by the rear frame 20 .

[0055] The front fork 14 is supported by a front seat tube 18 so as to be steerable to the left and right. The front wheel 13 is supported by an axle 13a provided at the lower end of the front fork 14. A steering handle 21 gripped by a rider is attached to the upper end of the front fork 14.

[0056] The swing arm 16 is supported by a pivot 22 supported by the vehicle frame 11. The pivot 22 is a shaft extending horizontally in the vehicle width direction. The pivot 22 is inserted through the front end of the swing arm 16. The swing arm 16 swings up and down around the pivot 22.

[0057] The rear wheel 15 is supported by an axle 15 a provided at a rear end portion of a swing arm 16 .

[0058] The power unit 12 is disposed between the front wheel 13 and the rear wheel 15 , and is supported by the vehicle frame 11 .

[0059] The power unit 12 is an internal combustion engine and includes a crankcase 23 and a cylinder 24 that accommodates a reciprocating piston. An exhaust port of the cylinder 24 is connected to an exhaust device 25 .

[0060] The output of the power unit 12 is transmitted to the rear wheels 15 via a driving force transmission member that connects the power unit 12 and the rear wheels 15 .

[0061] The saddle-ride type vehicle 10 also includes a front fender 26 that covers the front wheel 13 from above, a rear fender 27 that covers the rear wheel 15 from above, a step 28 for a passenger to put their feet on, and a fuel tank 29 that stores fuel used by the power unit 12 .

[0062] The front fender 26 is attached to the front fork 14. The rear fender 27 and the footrest 28 are provided below the seat 17. The fuel tank 29 is supported by the vehicle frame 11.

[0063] Figure 2 It is a perspective view of the vehicle frame 11 according to the embodiment.

[0064] The front frame 19 of the present embodiment includes: a main frame 31 extending rearward and downward from the front stand pipe 18; a pivot frame 32 extending downward from the rear end of the main frame 31; a down frame 33 extending downward from a position below the front end of the main frame 31 in the front stand pipe 18; and a gusset plate 34 reinforcing the connection between the front stand pipe 18, the main frame 31 and the down frame 33.

[0065] The rear frame 20 includes: a pair of left and right seat frames 41 extending from the rear of the main frame 31 to the rear end of the vehicle body; a pair of left and right rear sub-frames 42 extending from the middle portion in the up-down direction of the left and right pivot frames 32 to the rear end of the seat frames 41; a rear front cross beam 43 connecting the front portions of the left and right seat frames 41 in the left-right direction; a rear rear cross beam 44 connecting the rear end portions of the left and right seat frames 41 in the left-right direction; and a seat engaging portion 45 formed between the rear front cross beam 43 and the rear rear cross beam 44.

[0066] A unit bracket 35 is formed at the lower end of the lower frame 33. The unit bracket 35 is in the shape of a bent plate with its rear side open. The power unit 12 is fixed to the unit bracket 35. Specifically, the front end of the crankcase 23 of the power unit 12 is fixed to the unit bracket 35 by an axial fixing member extending in the vehicle width direction.

[0067] A unit bracket 36 is formed at the lower end of the pivot frame 32 (see Figure 1 ). The power unit 12 is fixed to the unit bracket 36. Specifically, the rear end of the crankcase 23 of the power unit 12 is fixed to the unit bracket 36 by a shaft-shaped fixing member extending in the vehicle width direction.

[0068] Therefore, in the vehicle frame 11, the down frame 33 and the pivot frame 32 are connected via the power unit 12, which is an example of a rigid member. The down frame 33 and the pivot frame 32 are connected via the power unit 12, and the vehicle frame 11 of this embodiment is a backbone frame.

[0069] like Figure 1 As shown, a vehicle body cover 50 is supported on the vehicle frame 11. The vehicle body cover 50 includes: a tank cover 51 covering the fuel tank 29; a pair of left and right center covers 52 provided below the tank cover 51 and covering the vehicle body from the left and right outer sides; a pair of left and right rear covers 53 behind the center covers 52 and covering the lower side of the seat 17 from the left and right outer sides; and a bottom cover 54 arranged to be separated downward from the center cover 52 and covering the front end of the power unit 12 from the front.

[0070] Figure 3 It is a front view of the peripheral portion of the power unit 12 according to the embodiment. Figure 4 It is a left side view of the periphery of the power unit 12 according to the embodiment. Figure 5 It is a bottom view of the peripheral portion of the power unit 12 according to the embodiment.

[0071] The power unit 12 of this embodiment is an engine. Hereinafter, the power unit 12 is referred to as the engine. The crankcase 23 of the engine 12 is a left-side split structure. The crankcase 23 has a left case 23L and a right case 23R (see FIG. 23 ). Figure 5 The left case 23L and the right case 23R are connected in the left-right direction to form the crankcase 23.

[0072] A cylinder section 24 extending forward and upward is provided at the front portion of the crankcase 23. The cylinder section 24 includes a cylinder 24a, a cylinder head 24b, and a cylinder head cover 24c in order from the crankcase 23 side. Regarding the cylinder section 24, the cylinder axis of the cylinder section 24 extends upward slightly tilted forward when the vehicle is viewed from the side. The cylinder section 24 extends upward along the lower frame 33 at the rear of the lower frame 33. The engine 12 of this embodiment is a single-cylinder engine having a single cylinder section 24.

[0073] An exhaust device 25 is connected to the upper front surface of the cylinder portion 24. The exhaust device 25 includes a first exhaust pipe 25a. The first exhaust pipe 25a extends forward from the right portion (one side in the vehicle width direction) of the front surface of the cylinder portion 24. When extending forward from the front surface of the cylinder portion 24, the first exhaust pipe 25a extends to a position in front of the lower frame 33, then bends, and extends downward toward the rear and lower side. At this time, when the vehicle body is viewed from the front, the first exhaust pipe 25a bends in a manner that bulges to the right side at a position on the right side of the lower frame 33 and extends downward. Furthermore, when the vehicle body is viewed from the side, the first exhaust pipe 25a overlaps with the unit bracket 35 of the lower frame 33 and bends backward along the front surface of the crankcase 23. The first exhaust pipe 25a extends backward along the bottom surface 12a of the crankcase 23 below the crankcase 23.

[0074] A catalyst section 25b is connected to the rear end of the first exhaust pipe 25a. The catalyst section 25b is cylindrical and extends in the front-rear direction. The catalytic converter 25b is arranged in the center of the vehicle width direction. A box-shaped front muffler 25c is connected to the rear end of the catalyst section 25b. The front muffler 25c is connected to the second exhaust pipe 25d extending to the rear upper right. The rear end of the second exhaust pipe 25d is connected to the muffler 25e. The muffler 25e is arranged on the right side of the rear wheel 15.

[0075] The exhaust device 25 of the present embodiment is constituted by the first exhaust pipe 25a, the catalyst section 25b, the pre-muffler 25c, the second exhaust pipe 25d, and the muffler 25e.

[0076] A shift pedal 39 is swingably supported around the left pedal 28. The swing operation of the shift pedal 39 is transmitted to a transmission (not shown) in the crankcase 23 via a shift lever 38 extending forward from the shift pedal 39.

[0077] Figure 6 It is an exploded perspective view of the under cover 54 and the under cover stay 90 according to the embodiment. Figure 7 It is a plan view of the under cover 54 and the under cover stay 90 according to the embodiment. Figure 8 It is a perspective view of the under cover 54 and the under cover stay 90 according to the embodiment, as seen from the rear.

[0078] The undercover 54 is attached to the vehicle body such as the vehicle frame 11 and the power unit 12 via an undercover stay 90. The undercover 54 includes a center undercover 60, a side undercover 70 disposed on the right side of the center undercover 60, and a side undercover 80 disposed on the left side of the center undercover 60.

[0079] The center bottom cover 60 includes a front cover portion 61 having a substantially trapezoidal shape in front view, an extension cover portion 62 formed on the right side of the front cover portion 61 , and an extension cover portion 63 formed on the left side of the front cover portion 61 .

[0080] The front cover 61 is a curved plate with a central portion recessed rearward (see Figure 7 The front cover 61 is formed so that, when the vehicle body is viewed from the front, the left-right width becomes narrower as it approaches the bottom. The front cover 61 is inclined upward as it approaches the rear of the vehicle body. The front cover 61 is formed with a transverse hole 61a that passes through in the thickness direction. The transverse hole 61a extends in the left-right direction. A plate-shaped fixing portion 61b that is bent backward is formed at the lower end of the front cover 61 (see Figure 5 The fixing portion 61b has a fixing hole through which a bolt (fastening member) is inserted.

[0081] The left and right extended cover parts 62 and 63 extend to a position above the front cover part 61. The upper ends of the extended cover parts 62 and 63 are bent rearward. Cover fastening parts 62a and 63a that penetrate in the vehicle width direction are formed at the upper ends of the extended cover parts 62 and 63. Fixing holes for bolts to be inserted are formed in the cover fastening parts 62a and 63a.

[0082] The center undercover 60 has a recessed cutout 60a (see FIG. 1 ) formed by the upper edge of the front cover portion 61 and the inner edges of the extension cover portions 62 and 63 in the vehicle width direction. Figure 3 ).

[0083] The right side bottom cover 70 extends in the front-rear direction. Figure 6 As shown, the side undercover 70 is a shallow bottom container-shaped structure that is recessed outward in the vehicle width direction. That is, the side undercover 70 includes a side cover portion 71 having a thickness in the vehicle width direction and a wall-shaped outer peripheral cover portion 72 formed on the outer peripheral portion of the side cover portion 71 and protruding inward in the vehicle width direction.

[0084] The side cover portion 71 is formed so that its vertical width becomes narrower toward the rear. Specifically, the side cover portion 71 includes: a substantially rectangular front portion 71a which is longer in the vertical direction than the right side extension cover portion 62 of the center bottom cover 60; a substantially trapezoidal middle portion 71b which extends from the rear end of the front portion 71a and becomes narrower in the vertical width toward the rear; and a rear portion 71c which extends rearward from the rear end of the middle portion 71b.

[0085] The side cover portion 71 is inclined along the center undercover 60 when the vehicle body is viewed from the front. The side cover portion 71 is curved toward the vehicle width direction inner side as it moves downward when the vehicle body is viewed from the front.

[0086] The peripheral cover portion 72 has: a front wall portion 72a formed along the front edge of the side cover portion 71; an upper wall portion 72b formed along the upper edge of the side cover portion 71; a lower wall portion 72c formed along the lower edge of the side cover portion 71; and a rear wall portion 72d formed along the rear edge of the side cover portion 71.

[0087] The upper portion of the front wall portion 72 a extends upward at a position further outward in the vehicle width direction than the front fork 14 when the vehicle body is viewed from the front.

[0088] like Figure 6 As shown, a claw-shaped clamping portion 73 is formed on the front wall portion 72a on the inner surface of the side undercover 70. The clamping portion 73 extends inward in the vehicle width direction along the front wall portion 72a. A predetermined gap is formed between the clamping portion 73 and the inner surface of the front wall portion 72a. The extension cover portion 62 on the right side of the center undercover 60 is sandwiched between the clamping portion 73 and the front wall portion 72a. The clamping portion 73 abuts against the rear surface of the extension cover portion 62. Thus, the side undercover 70 is connected to the center undercover 60 in such a manner that the front wall portion 72a of the outer cover portion 72 covers the center undercover 60 from the front side (outside).

[0089] A boss portion 74 is formed above the clamp portion 73. The boss portion 74 protrudes inward in the vehicle width direction relative to the inner surface of the front portion 71a of the side cover portion 71. A fastening hole is formed in the boss portion 74. The cover fastening portion 62a on the right side of the center undercover 60 is fastened to the boss portion 74.

[0090] A cover stay portion 75 is formed below the clamp portion 73 and extends inward in the vehicle width direction relative to the inner surface of the front portion 71a of the side cover portion 71. The cover stay portion 75 is a plate-shaped portion having a thickness in the vertical direction. The cover stay portion 75 overlaps with the fixing portion 61b of the center bottom cover 60 in a plan view. A through hole is formed in the cover stay portion 75 and penetrates in the vertical direction. For example, a clamp nut (fastened component) is mounted at a portion where the through hole of the cover stay portion 75 is formed.

[0091] A rib 76 extending in the vertical direction is formed behind the boss portion 74 and the cover stay portion 75. The rib 76 protrudes inward in the vehicle width direction relative to the inner surface of the middle portion 71b of the side cover portion 71. The upper end of the rib 76 is connected to the inner surface of the upper wall portion 72b. In addition, the lower end of the rib 76 is connected to the inner surface of the lower wall portion 72c. An insertion portion 77 protruding from the inner surface of the middle portion 71b in the vehicle width direction is formed in the center portion of the rib 76 in the vertical direction. An insertion hole penetrating in the front-rear direction is formed in the insertion portion 77. The bottom cover stay 90 can be inserted into the insertion portion 77.

[0092] An exhaust pipe avoidance portion 78 having a shape in which a portion is cut outward in the vehicle width direction is formed below the rib portion 76. The exhaust pipe avoidance portion 78 is formed on the lower wall portion 72c.

[0093] A stay fastening portion 79 is formed to protrude cylindrically from the inner surface of the rear portion 71c of the side cover portion 71 behind the rib portion 76. A through hole for inserting a bolt is formed in the stay fastening portion 79. An under cover stay 90 is fastened to the stay fastening portion 79.

[0094] The left side undercover 80 is formed to correspond to the right side undercover 70. In particular, the length of the left side undercover 80 to the rear is shorter than the length of the right side undercover 70 to the rear. Thus, interference with the shift lever 38 is avoided (see FIG. 1 ). Figure 5 ) That is, the left side undercover 80 is formed in a shape that is substantially bilaterally symmetrical with the right side undercover 70 .

[0095] Specifically, the left side undercover 80 extends in the front-rear direction. The side undercover 80 is generally container-shaped with a shallow bottom that is recessed toward the outside in the vehicle width direction. That is, the side undercover 80 includes: a side cover portion 81 having a thickness in the vehicle width direction; and a wall-shaped outer peripheral cover portion 82 formed on the outer peripheral portion of the side cover portion 81 and protruding toward the inside in the vehicle width direction.

[0096] The side cover portion 81 is formed so that its vertical width becomes narrower toward the rear. Specifically, the side cover portion 81 includes: a substantially rectangular front portion 81a which is longer in the vertical direction than the left extension cover portion 63 of the center bottom cover 60; a substantially trapezoidal middle portion 81b which extends from the rear end of the front portion 81a and becomes narrower in the vertical width toward the rear; and a rear portion 81c which extends rearward from the rear end of the middle portion 81b.

[0097] The side cover portion 81 is inclined along the center undercover 60 when the vehicle body is viewed from the front. The side cover portion 81 is curved toward the vehicle width direction inner side as it moves downward when the vehicle body is viewed from the front.

[0098] like Figure 4 As shown, the peripheral cover portion 82 has: a front wall portion 82a, which is formed along the front edge of the side cover portion 81; an upper wall portion 82b, which is formed along the upper edge of the side cover portion 81; a lower wall portion 82c, which is formed along the lower edge of the side cover portion 81; and a rear wall portion 82d, which is formed along the rear edge of the side cover portion 81.

[0099] The upper portion of the front wall portion 82a extends upward at a position further outward in the vehicle width direction than the front fork 14 when the vehicle body is viewed from the front (see Figure 3 ).

[0100] Here, the bottom cover 54 is formed with a concave shape 54a that is recessed downward by the cutout portion 60a of the center bottom cover 60, the inner edge of the front wall portion 72a of the right side bottom cover 70, and the inner edge of the front wall portion 82a of the left side bottom cover 80. (See Figure 3 )

[0101] A claw-shaped clamping portion (not shown) is formed on the inner surface of the side undercover 80 at the front wall portion 82a. The clamping portion extends inward in the vehicle width direction along the front wall portion 82a. A predetermined gap is formed between the clamping portion and the inner surface of the front wall portion 82a. The extended cover portion 63 on the left side of the central undercover 60 is sandwiched between the clamping portion and the front wall portion 82a. The clamping portion abuts against the rear surface of the extended cover portion 63. Thus, the side undercover 80 is connected to the central undercover 60 in such a manner that the front wall portion 82a of the outer peripheral cover portion 82 covers the central undercover 60 from the front side (outside).

[0102] like Figure 4 As shown in FIG. 1 , a boss portion 84 is formed above the clamping portion. The boss portion 84 protrudes inward in the vehicle width direction relative to the inner surface of the front portion 81a of the side cover portion 81. A fastening hole is formed in the boss portion 84. The cover fastening portion 63a on the left side of the center undercover 60 is fastened to the boss portion 84.

[0103] A cover stay portion 85 is formed below the clamping portion and extends inward in the vehicle width direction relative to the inner surface of the front portion 81a of the side cover portion 81. The cover stay portion 85 is a plate-shaped portion having a thickness in the vertical direction. The cover stay portion 85 overlaps with the fixing portion 61b of the center undercover 60 in a plan view. A through hole is formed in the cover stay portion 85 and penetrates in the vertical direction. The cover stay portion 85 is clamped by the fixing portion 61b of the center undercover 60 and the cover stay portion 75 of the right side undercover 70.

[0104] A rib 86 extending in the vertical direction is formed behind the boss portion 84 and the cover stay portion 85. The rib 86 protrudes inward in the vehicle width direction relative to the inner surface of the middle portion 81b of the side cover portion 81. The upper end of the rib 86 is connected to the inner surface of the upper wall portion 82b. In addition, the lower end of the rib 86 is connected to the inner surface of the lower wall portion 82c. An insertion portion 87 protruding from the inner surface of the middle portion 81b in the vehicle width direction is formed in the center portion of the rib 86 in the vertical direction. An insertion hole penetrating in the front-rear direction is formed in the insertion portion 87. The bottom cover stay 90 can be inserted into the insertion portion 87.

[0105] A stay fastening portion 89 is formed to protrude cylindrically from the inner surface of the rear portion 81c of the side cover portion 81 behind the rib portion 86. A through hole for inserting a bolt is formed in the stay fastening portion 89. An undercover stay 90 is fastened to the stay fastening portion 89.

[0106] The undercover 54 is mounted on the vehicle body via an undercover stay 90. The undercover stay 90 is an integral metal component. The undercover stay 90 has a rod portion 91 that is substantially C-shaped when viewed from above. Specifically, the rod portion 91 has: a front end portion 91a extending in the left-right direction (vehicle width direction); front end inclined portions 91b and 91c that are inclined rearward as they approach the left-right outer sides from the left and right sides of the front end portion 91a; extension portions 91d and 91e that extend rearward from the left and right outer ends of the front end inclined portions 91b and 91c; and bent portions 91f and 91g that bend inward in the vehicle width direction from the rear ends of the extended portions 91d and 91e. The right bent portion 91f is separated from the left bent portion 91g.

[0107] When the vehicle body is viewed from the side, the front end portion 91a is located at the top compared to other parts of the rod portion 91. The front end inclined portions 91b and 91c are inclined downward as they approach the rear. The extension portions 91d and 91e are inclined upward at a gentle inclination as they approach the rear. The curved portions 91f and 91g are gently inclined downward as they approach the inner side in the vehicle width direction.

[0108] When the vehicle body is viewed from the front, the undercover stay 90 is formed into a concave shape 90a that is concave upward by the front end portion 91a, the front end inclined portion 91b on the left side, and the front end inclined portion 91c on the right side (see FIG. Figure 3 ).

[0109] A flat plate-shaped frame fastening portion 92 protruding forward is formed at the front end portion 91a. The frame fastening portion 92 has a thickness in the up-down direction. A fixing hole through which a bolt is inserted from below is formed in the frame fastening portion 92.

[0110] Insertion rods 93 and 94 extending linearly forward are supported at the lower front ends of the extensions 91d and 91e. The insertion rods 93 and 94 extend along the extensions 91d and 91e. The right insertion rod 93 is inserted into the insertion portion 77 of the right side bottom cover 70. The left insertion rod 94 is inserted into the insertion portion 87 of the left side bottom cover 80. The insertion rods 93 and 94 penetrate the insertion portions 77 and 87 and protrude forward.

[0111] A cover fastening portion 95 is provided at the rear end of the right extending portion 91d. The cover fastening portion 95 is provided at the outer side of the extending portion 91d in the vehicle width direction. The cover fastening portion 95 has a fastening hole for fastening with a bolt from the outer side in the vehicle width direction.

[0112] A cover fastening portion 96 is provided at the rear of the left extension portion 91e. The cover fastening portion 96 is provided at the outer side of the extension portion 91e in the vehicle width direction. The cover fastening portion 96 has a fastening hole for fastening with a bolt from the outer side in the vehicle width direction.

[0113] The left cover fastening portion 95 is formed in front of the right cover fastening portion 96 .

[0114] Flat-plate-shaped unit fastening parts (connection body fastening parts) 97 and 98 having thickness in the up-down direction are formed at the inner ends of the left and right bent parts 91f and 91g. Bolts can be inserted into the unit fastening parts 97 and 98 from below.

[0115] Next, an example of how the under cover 54 is mounted on the vehicle body will be described.

[0116] The undercover 54 is assembled in advance. In the present embodiment, first, the left side undercover 80 is mounted on the center undercover 60. That is, the left edge of the center undercover 60 is sandwiched between the front wall portion 82a of the side undercover 80 and the clamping portion 83, and the side undercover 80 is positioned relative to the center undercover 60. Then, bolts are inserted from the inner side in the vehicle width direction to the cover fastening portion 63a on the left side of the center undercover 60 and fastened to the boss portion 84 of the side undercover 80. At this time, the cover stay portion 85 of the side undercover 80 overlaps with the upper portion of the fixing portion 61b.

[0117] When the left side undercover 80 is mounted on the center undercover 60, the right side undercover 70 is mounted on the center undercover 60. That is, the right edge of the center undercover 60 is sandwiched between the front wall portion 72a of the side undercover 70 and the clamping portion 73, and the side undercover 70 is positioned relative to the center undercover 60. Then, the bolt is inserted from the inside in the vehicle width direction into the cover fastening portion 62a on the right side of the center undercover 60 and fastened to the boss portion 74 of the side undercover 70. At this time, the cover stay portion 75 of the side undercover 70 overlaps with the upper portion of the cover stay portion 85 of the left side undercover 80.

[0118] In this state, a bolt is inserted from below into the fixing portion 61b of the center undercover 60. The bolt is fastened to the fastened component of the upper undercover bracket portion 75. Thus, the fixing portion 61b, the undercover bracket portion 85, and the undercover bracket portion 75 are fastened together. Therefore, in the undercover 54, the center undercover 60, the side undercover 70, and the side undercover 80 are assembled into one body. That is, the undercover 54 is in a group state.

[0119] On the other hand, the under-coil stay 90 is pre-attached to the vehicle body. The under-coil stay 90 is arranged along the bottom surface portion 12a of the power unit 12. The under-coil stay 90 is arranged between the bottom surface portion 12a of the engine 12 and the first exhaust pipe 25a in the up-down direction.

[0120] Furthermore, the frame fastening portion 92 and the unit fastening portions 97 and 98 of the under-cover stay 90 are fastened to the down frame 33 and the engine 12 .

[0121] That is, the frame fastening portion 92 of the under cover stay 90 is fastened to the lower end portion of the down frame 33. Specifically, the frame fastening portion 92 is fastened to the lower surface of the unit bracket 35 at the lower end portion of the down frame 33 by bolts inserted from below.

[0122] The right unit fastening portion 97 of the under cover stay 90 is fastened to the bottom surface portion 12a of the power unit 12. Specifically, the right unit fastening portion 97 is fastened to the bottom surface portion 12a of the right case 23R of the crankcase 23 by bolts inserted from below.

[0123] The left unit fastening portion 98 of the under cover stay 90 is fastened to the bottom surface portion 12a of the power unit 12. Specifically, the left unit fastening portion 98 is fastened to the bottom surface portion 12a of the left case 23L of the crankcase 23 by bolts inserted from below.

[0124] When the under-cover stay 90 is mounted on the vehicle body, the under-cover 54 is moved from the front to the rear of the first exhaust pipe 25a, and the under-cover 54 is assembled to the under-cover stay 90. That is, the under-cover 54 is assembled in such a manner that the insertion rods 93 and 94 of the under-cover stay 90 are inserted into the insertion portions 77 and 87 of the under-cover 54. By inserting the insertion rods 93 and 94 into the insertion portions 77 and 87, the under-cover 54 is temporarily fixed to the under-cover stay 90. Furthermore, bolts are respectively inserted into the stay fastening portions 79 and 89 of the rear end portion of the under-cover 54 from the outside in the vehicle width direction, and are respectively fastened to the cover fastening portions 95 and 96 of the under-cover stay 90.

[0125] Thereby, the under cover 54 is attached to the vehicle body.

[0126] Here, the concave shape 54a of the under cover 54 and the concave shape 90a of the under cover stay 90 form a substantially hexagonal closed opening shape S1 when the vehicle body is viewed from the front (see Figure 3 The bottom surface portion 12a of the engine 12 is located inside the opening shape S1.

[0127] In addition, when the vehicle body is viewed from the side, the center undercover 60 overlaps with the side undercovers 70 and 80 and is shielded by the side undercovers 70 and 80 (see FIG. Figure 4 ). That is, the center undercover 60 is located at a rearward position relative to the front wall portions 72a and 82a of the side undercovers 70 and 80. In the center undercover 60, the front surface cover portion 61 is inclined upward as it approaches the rear of the vehicle body.

[0128] In addition, the bottom cover 54 has a front-to-rear length that does not reach the pedal 28. Therefore, the bottom cover 54 of the present embodiment is compact, and the degree of freedom of layout near the pedal 28 can be improved. In particular, in the bottom cover 54 of the present embodiment, the side bottom cover 80 on the left side is formed shorter than the side bottom cover 70 on the right side, and the side bottom cover 80 on the left side does not interfere with the shift lever 38. Therefore, the bottom cover 54 of the present embodiment can easily further improve the degree of freedom of layout around the pedal 28.

[0129] Next, the operation of this embodiment will be described.

[0130] When the saddle-riding type vehicle 10 is traveling, the traveling wind flows from the front. Therefore, the traveling wind flowing to the left and right of the front wheel 13 and the front fork 14 reaches the bottom cover 54. In the bottom cover 54, the central bottom cover 60 is located at a position rearward of the front wall parts 72a and 82a of the side bottom covers 70 and 80, and the central part of the central bottom cover 60 in the vehicle width direction, that is, the front surface cover part 61 is recessed rearward when viewed from above, and is inclined upward as it approaches the rear of the vehicle body when viewed from the side. Therefore, the traveling wind reaching the central bottom cover 60 is easily flowed over the top of the cutout part 60a in a state where the side bottom covers 70 and 80 suppress the wind from spreading outward in the vehicle width direction.

[0131] At this time, the running wind that has passed through the cutout portion 60a easily passes through the inside of the opening shape S1 formed by the concave shape 54a of the bottom cover 54 and the concave shape 90a of the bottom cover stay 90. When the vehicle body is viewed from the front, the bottom surface portion 12a is located inside the opening shape S1, so the running wind easily flows backward along the bottom surface portion 12a of the power unit 12. Therefore, the running wind easily flows quickly on the bottom surface portion 12a of the engine 12, and the engine 12 is easily cooled by a large amount of the running wind.

[0132] In addition, in the present embodiment, the bottom cover 54 is fixed to the bottom cover stay 90 by the middle portion 71b, 81b formed with the insertion portion 77, 87 and the rear portion 71c, 81c formed with the stay fastening portion 79, 89. Therefore, the portion forward of the insertion portion 77, 87 is easily kept rigid only by the cover components such as the front portion 71a, 81a of the central bottom cover 60 and the side bottom cover 70, 80. As a result, the portion forward of the bottom cover 54 is easily deformed appropriately than the insertion portion 77, 87. Therefore, in the bottom cover 54, it is easy to avoid the force of the running wind, flying stones, etc. blowing from the front by deformation.

[0133] As described above, according to the saddle-riding type vehicle 10 of the present embodiment to which the present invention is applied, an undercover 54 is mounted on the vehicle frame 11, and the vehicle frame 11 includes: a main frame 31 extending rearward from the front stand pipe 18; a lower frame 33 extending downward from the front stand pipe 18; and a pivot frame 32 extending downward from the rear end of the main frame 31, wherein the saddle-riding type vehicle 10 includes: a connecting body 12, which connects the lower frame 33 and the pivot frame 32; and an undercover stay 90, which connects the undercover 54 to the vehicle body, and the undercover 54 includes a central undercover 60, a right undercover 61, and a right undercover 62. The side undercover 70 and the left side undercover 80, the undercover support 90 has a frame fastening portion 92 fastened to the lower frame 33 and a pair of left and right unit fastening portions 97, 98 fastened to the connecting body 12. When observing the vehicle body from the front, the undercover support 90 is in a concave shape 90a that is recessed upward, and the undercover 54 is in a concave shape 54a that is recessed downward. The concave shape 90a of the undercover support 90 and the concave shape 54a of the undercover 54 form a closed opening shape S1 when observing the vehicle body from the front, and the frame fastening portion 92 is arranged at a position higher than the unit fastening portions 97, 98.

[0134] According to this structure, since the bottom cover 54 is provided, it is possible to implement a countermeasure against flying stones and the like when the saddle-riding type vehicle 10 is traveling. In addition, the opening shape S1 formed by the bottom cover 54 and the bottom cover bracket 90 can improve the appearance design of the saddle-riding type vehicle 10 provided with the bottom cover 54. Moreover, the bottom cover 54 is fixed to the lower frame 33 and the connecting body 12 via the bottom cover bracket 90, so that the installation rigidity of the bottom cover 54 can be ensured compared with the case where the bottom cover 54 is only fixed to the lower frame 33. In addition, compared with the case where the bottom cover 54 is installed in a manner that straddles the lower frame 33 and the pivot frame 32, the enlargement of the bottom cover 54 can be suppressed. Furthermore, the opening shape S1 formed by the bottom cover bracket 90 and the bottom cover 54 can easily guide the traveling wind toward the connecting body 12. Therefore, according to the above structure, in a saddle-riding type vehicle 10 in which the bottom cover 54 is installed on the frame 11 which is a backbone frame, it is possible to achieve an improvement in the appearance design and a countermeasure against flying stones during driving, and ensure the installation rigidity of the bottom cover 54, while suppressing the enlargement of the bottom cover 54 and making it easy to guide the running wind toward the connecting body 12.

[0135] In the present embodiment, when the vehicle body is viewed from the front, the bottom surface portion 12a of the connecting body 12 is located inside the opening shape S1.

[0136] According to this configuration, the traveling wind can be sent to the bottom surface portion 12 a of the connection body 12 via the opening shape S1 , and the traveling wind can flow along the bottom surface portion 12 a , thereby efficiently cooling the connection body 12 .

[0137] In addition, in the present embodiment, the connection body 12 is a power unit 12 .

[0138] According to this configuration, the traveling wind can be easily guided toward the power unit 12 via the undercover 54, and the power unit 12 that easily generates heat can be effectively cooled.

[0139] In addition, in the present embodiment, the power unit 12 is an engine 12 .

[0140] According to this structure, the first exhaust pipe 25a can be passed through the closed opening shape S1 portion, which can contribute to improving the layout feasibility of the engine 12.

[0141] In addition, in the present embodiment, when the vehicle body is observed from the side, the center undercover 60 is located rearward of the front wall portions 72a, 82a constituting the front edges of the side undercovers 70, 80, and the front surface cover portion 61 of the center portion in the vehicle width direction of the center undercover 60 is inclined upward as it approaches the rear of the vehicle body. The center undercover 60 is formed so that its width becomes narrower as it approaches the bottom of the vehicle body, and the left and right side undercovers 70, 80 are inclined inward in the vehicle width direction as they approach the bottom of the vehicle body.

[0142] According to this structure, the traveling wind can be easily guided to the opening shape S1 formed by the under cover 54 and the under cover stay 90 , so that the connection body 12 can be cooled more effectively.

[0143] [Other embodiments]

[0144] The above-described embodiment merely shows one mode of the present invention, and any deformation and application are possible without departing from the gist of the present invention.

[0145] In the above embodiment, as the saddle-riding type vehicle 10, a saddle-riding type vehicle 10 having an engine 12 as an internal combustion engine is exemplified, but it is not limited to this. For example, as the saddle-riding type vehicle 10, it may also be a vehicle without the engine 12, that is, an electric vehicle. Therefore, in the above embodiment, the engine 12 is exemplified as a power unit for driving the vehicle body, but as a power unit, it may also be a power unit having an electric motor for driving. In addition, a power unit is exemplified as an example of a connecting body, but for example, in an electric saddle-riding type vehicle using an in-wheel motor, etc., as a connecting body, it may also be a battery housing for accommodating a battery. That is, it may also be that the battery housing is fixed to the lower end of the lower frame 33 and the lower end of the pivot frame 32, and the lower end of the lower frame 33 and the lower end of the pivot frame 32 are connected via the battery housing. At this time, the running wind can be guided to the battery as a heat generating component in the battery housing through the bottom cover 54, so that the battery can be cooled.

[0146] In the above embodiment, as the saddle-riding vehicle 10, an automatic two-wheeled vehicle having a front wheel 13 and a rear wheel 15 is described as an example, but the present invention is not limited to this. The present invention can be applied to a three-wheeled saddle-riding vehicle having two front wheels or rear wheels or a saddle-riding vehicle having more than four wheels.

[0147] [Structure supported by the above-mentioned embodiment]

[0148] The above-mentioned embodiment supports the following structure.

[0149] (Structure 1) A saddle-riding type vehicle, an undercover is mounted on a backbone frame, the backbone frame comprising: a main frame extending rearward from a front upright tube; a lower frame extending downward from the front upright tube; and a pivot frame extending downward from the rear end of the main frame, characterized in that the saddle-riding type vehicle comprises: a connecting body, which connects the lower frame and the pivot frame; and an undercover support frame, which connects the undercover to a vehicle body, the undercover comprising a central undercover, a right side undercover and a left side undercover, the undercover support frame comprising a frame fastening portion fastened to the lower frame and a pair of left and right connecting body fastening portions fastened to the connecting body, when the vehicle body is viewed from the front, the undercover support frame is in a concave shape that is recessed upward, and the undercover is in a concave shape that is recessed downward, the concave shape of the undercover support frame and the concave shape of the undercover form a closed opening shape when the vehicle body is viewed from the front, and the frame fastening portion is arranged at a position above the connecting body fastening portion.

[0150] According to this structure, since the bottom cover is provided, it is possible to implement countermeasures against flying stones and the like during driving. In addition, the appearance design of the saddle-riding type vehicle provided with the bottom cover can be improved by the opening shape formed by the bottom cover and the bottom cover support. Moreover, since the bottom cover is fixed to the lower frame and the connecting body via the bottom cover support, the installation rigidity of the bottom cover can be ensured compared with the case where the bottom cover is only fixed to the lower frame. In addition, compared with the case where the bottom cover is installed in a manner that straddles the lower frame and the pivot frame, the enlargement of the bottom cover can be suppressed. Moreover, the opening shape formed by the bottom cover support and the bottom cover can easily guide the running wind toward the connecting body. Therefore, according to the above structure, in a saddle-riding type vehicle in which the bottom cover is installed on a backbone frame, it is possible to improve the appearance design and implement countermeasures against flying stones and the like during driving, ensure the installation rigidity of the bottom cover, suppress the enlargement of the bottom cover, and easily guide the running wind toward the connecting body.

[0151] (Structure 2) In the saddle-ride type vehicle of Structure 1, it is characterized in that, when the vehicle body is viewed from the front, the bottom surface portion of the connecting body is located inside the opening shape.

[0152] According to this configuration, the traveling wind can be sent to the bottom surface portion of the connection body through the opening shape, and the traveling wind can flow along the bottom surface portion, thereby efficiently cooling the connection body.

[0153] (Structure 3) In the saddle-ride type vehicle of Structure 1 or 2, it is characterized in that the connecting body is a power unit.

[0154] According to this configuration, the traveling wind can be easily guided toward the power unit through the undercover, and the power unit that easily generates heat can be effectively cooled.

[0155] (Structure 4) In the saddle-ride type vehicle of Structure 3, it is characterized in that the power unit is an internal combustion engine.

[0156] According to this structure, the exhaust pipe can be passed through the closed opening-shaped portion, which can contribute to improving the layout feasibility of the internal combustion engine.

[0157] (Configuration 5) In a saddle-riding type vehicle of any one of Configurations 1 to 4, it is characterized in that, when the vehicle body is viewed from the side, the central undercover is located rearward of the front edge of the side undercover, the front surface of the central portion in the vehicle width direction of the central undercover is inclined upward as it approaches the rear of the vehicle body, the central undercover is formed so that its width becomes narrower as it approaches the bottom of the vehicle body, and the left and right side undercovers are inclined inward in the vehicle width direction as they approach the bottom of the vehicle body.

[0158] According to this configuration, the traveling wind can be easily guided to the closed opening shape formed by the under cover and the under cover stay, so that the connection body can be cooled more effectively.

Claims

1. A saddle-riding vehicle, wherein an undercover (54) is mounted on a backbone frame, wherein the backbone frame comprises: a main frame (31) extending rearward from a front stand pipe (18); a lower frame (33) extending downward from the front stand pipe (18); and a pivot frame (32) extending downward from a rear end of the main frame (31). It is characterized in that The saddle-riding type vehicle comprises: A connector connecting the lower frame (33) and the pivot frame (32); and an undercover support (90) connecting the undercover (54) to the vehicle body, The bottom cover (54) includes a central bottom cover (60), a right side bottom cover (70) and a left side bottom cover (80). The bottom cover support frame (90) comprises a frame fastening portion (92) fastened to the lower frame (33) and a pair of left and right connecting body fastening portions fastened to the connecting body. When the vehicle body is viewed from the front, the bottom cover support (90) is in a concave shape (90a) that is concave upward, and the bottom cover (54) is in a concave shape (54a) that is concave downward, and the concave shape (90a) of the bottom cover support (90) and the concave shape (54a) of the bottom cover (54) form a closed opening shape (S1) when the vehicle body is viewed from the front. The frame fastening portion (92) is arranged above the connecting body fastening portion.

2. The saddle-riding type vehicle according to claim 1, characterized in that: When the vehicle body is viewed from the front, the bottom surface portion (12a) of the connecting body is located inside the opening shape (S1).

3. The saddle-riding type vehicle according to claim 2, characterized in that: The connecting body is a power unit.

4. The saddle-riding type vehicle according to claim 3, characterized in that: The power unit is an internal combustion engine.

5. The saddle-riding type vehicle according to any one of claims 1 to 4, characterized in that: When the vehicle body is viewed from the side, the central undercover (60) is located at a rearward position relative to the front edges (72a, 82a) of the side undercovers (70, 80). The front surface of the central portion of the central undercover (60) in the vehicle width direction is inclined upward as it approaches the rear of the vehicle body. The central bottom cover (60) is formed to become narrower in width as it approaches the lower part of the vehicle body. The left and right side undercovers (70, 80) are inclined inward in the vehicle width direction as they approach the lower side of the vehicle body.

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