Saddle-riding type vehicle

Abstract

To provide a saddle-riding type vehicle capable of easily supplying air over an entire radiator.SOLUTION: An saddle-riding type vehicle 1 is provided with a head pipe, a front fork 7, a front wheel, a left shroud 31L, a right shroud 31R, a radiator 11, and a radiator grille 20. The radiator 11 is placed behind the front fork 7 and placed between the left shroud 31L and a right shroud 31R. The radiator grille 20 is placed behind the front fork 7, and between the left shroud 31L and a right shroud 31R, and is placed in front of the radiator 11. The radiator grille 20 is provided with a plurality of louvers 40. The plurality of louvers 40 is placed side by side in a width direction Y. A louver 40 nearest to a vehicle central surface C among all of the louvers 40 is called as a first louver 41. The first louver 41 projects ahead further than the louvers 40 other than the first louver 41.SELECTED DRAWING: Figure 4

Description

[Technical field]

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

[0002] Patent Document 1 discloses a saddle-type vehicle. The saddle-type vehicle includes a radiator, a radiator shroud, and a radiator grill. The radiator shroud is disposed to the right and left of the radiator. The radiator grill is attached to the front of the radiator. The radiator grill supplies air to the radiator. The air passes through the radiator grill and then passes through the radiator.

[0003] The radiator grille is made up of a plurality of louvers. The plurality of louvers are aligned in the width direction of the saddle riding type vehicle. Each louver extends in the front-rear direction in a plan view of the saddle riding type vehicle. Each louver extends in the up-down direction in a front view of the saddle riding type vehicle.

[0004] A plane that passes through the center of the saddle-type vehicle and is perpendicular to the width direction is called the "vehicle center plane." Of all the louvers, the one closest to the vehicle center plane is called the "first louver" for convenience. The forward protrusion amount of the first louver is smaller than the forward protrusion amounts of the louvers other than the first louver. In other words, the front end of the first louver is located rearward of the front ends of the louvers other than the first louver. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 9-254853 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the conventional example having such a configuration has the following problems: The amount of air supplied to the radiator is non-uniform across the front surface of the radiator. In other words, the amount of air passing through the radiator is non-uniform across the front surface of the radiator. The distribution of the amount of air supplied to the radiator is non-uniform across the width.

[0007] For example, the radiator has a central portion and an outer portion. The central portion is located near a vehicle center plane. The outer portion is located laterally outward from the central portion. The distance between the outer portion and the vehicle center plane is greater than the distance between the central portion and the vehicle center plane. The amount of air passing through the outer portion is greater than the amount of air passing through the central portion.

[0008] The present invention has been made in view of the above circumstances, and has an object to provide a saddle-type vehicle in which air can be easily supplied uniformly throughout the entire radiator. [Means for solving the problem]

[0009] In order to achieve the above object, the present invention has the following configuration. That is, the present invention provides A saddle-type vehicle, Head pipe and a front fork supported by the head pipe; A front wheel supported by the front fork; a left shroud disposed to the left of the front fork and above the front wheel; a right shroud disposed to the right of the front fork and above the front wheel; a radiator disposed rearward of the front fork and between the left shroud and the right shroud; a radiator grill disposed rearward of the front fork, between the left shroud and the right shroud, and in front of the radiator; Equipped with The radiator grille includes a plurality of louvers. The plurality of louvers are aligned in a width direction of the saddle riding type vehicle, a virtual plane that passes through the center of the head pipe and is perpendicular to the width direction is defined as a vehicle center plane, Among all the louvers, the louver closest to the vehicle center plane is designated as the first louver; The first louver protrudes forward further than louvers other than the first louver. It is a saddle-type vehicle.

[0010] [Action and Effect] The saddle-type vehicle includes a front fork, a left shroud, a right shroud, a radiator, and a radiator grill. The left shroud is disposed to the left of the front fork. The right shroud is disposed to the right of the front fork. The radiator is disposed rear of the front fork. The radiator is disposed between the left shroud and the right shroud. The radiator grill is disposed rear of the front fork. The radiator grill is disposed between the left shroud and the right shroud. The radiator grill is disposed in front of the radiator. The radiator grill supplies air to the radiator. The air passes through the radiator grill and then through the radiator.

[0011] The radiator grille includes a plurality of louvers. The plurality of louvers are arranged in the width direction of the saddle-type vehicle. The first louver is the closest to the vehicle center plane among all the louvers. The vehicle center plane is a virtual plane. The vehicle center plane passes through the center of the head pipe. The vehicle center plane is perpendicular to the width direction. The first louver protrudes forward more than the louvers other than the first louver. In other words, the front end of the first louver is located forward more than the front ends of the louvers other than the first louver. For this reason, it is easy for the first louver to receive air from an area that is outward in the width direction from the first louver. Therefore, it is easy to increase the amount of air received by the first louver. It is easy to increase the amount of air that the first louver guides to the radiator. Therefore, it is easy to increase the amount of air supplied to the portion of the radiator close to the first louver. As a result, it is easy to supply air uniformly throughout the entire radiator. Specifically, it is easy to uniformly distribute the amount of air supplied to the radiator in the width direction.

[0012] In the above-mentioned saddle riding type vehicle, Of the two louvers adjacent in the width direction, it is preferable that one louver closer to the vehicle center plane is an inner louver and the other louver is an outer louver, the inner louver has a front end and the outer louver has a front end, and the front end of the inner louver is positioned at the same position as the front end of the outer louver in the fore-and-aft direction of the saddle-type vehicle, or at a position forward of the front end of the outer louver.

[0013] [Actions and Effects] For this reason, it is easy for the inner louvers to receive air from areas that are more outward in the width direction than the inner louvers. Therefore, it is easy to increase the amount of air that the inner louvers receive. It is easy to increase the amount of air that the inner louvers guide to the radiator. Therefore, it is easy to increase the amount of air supplied to the part of the radiator that is closer to the inner louvers. As a result, it is easy to supply air evenly throughout the entire radiator.

[0014] In the above-mentioned saddle riding type vehicle, It is preferable that the front ends of the inner louvers are located at a position forward of the front ends of the outer louvers.

[0015] [Function and Effect] For this reason, it is easier to increase the amount of air that the inner louvers guide to the radiator.

[0016] In the above-mentioned saddle riding type vehicle, It is preferable that each louver has an inclination angle with respect to the front-rear direction of the saddle riding type vehicle, and the inclination angle of the first louver is equal to or smaller than the inclination angles of the louvers other than the first louver.

[0017] [Function and Effect] Therefore, it is easy for the first louver to receive air from the area in front of the first louver, and therefore it is easier to increase the amount of air that the first louver guides to the radiator.

[0018] In the above-mentioned saddle riding type vehicle, It is preferable that the inclination angles of the louvers other than the first louver are equal to each other.

[0019] [Function and Effect] Therefore, it is easy to simplify the shape of the louvers other than the first louver, and therefore it is easy to form the radiator grille.

[0020] In the above-mentioned saddle riding type vehicle, Of the two louvers adjacent in the width direction, one closer to the vehicle center plane is designated as an inner louver and the other louver is designated as an outer louver, the inner louver having an inclination angle with respect to the fore-and-aft direction of the saddle-type vehicle, the outer louver having an inclination angle with respect to the fore-and-aft direction, and the inclination angle of the inner louver is preferably equal to or smaller than the inclination angle of the outer louver.

[0021] [Action and Effect] Therefore, it is easy for the inner louver to receive air from the area in front of the inner louver. Therefore, it is easy to increase the amount of air that the inner louver guides to the radiator. Therefore, it is easy to increase the amount of air supplied to the part of the radiator close to the inner louver. As a result, it is easy to supply air uniformly throughout the radiator.

[0022] In the above-mentioned saddle riding type vehicle, The inclination angle of the inner louvers is preferably smaller than the inclination angle of the outer louvers.

[0023] [Function and Effect] For this reason, it is easier to increase the amount of air that the inner louvers guide to the radiator.

[0024] In the above-mentioned saddle riding type vehicle, It is preferable that the louver located outside the first louver in the width direction and closest to the first louver is the second louver, the first louver has a front end and a rear end, the second louver has a front end and a rear end, and the distance between the front end of the first louver and the front end of the second louver is equal to or greater than the distance between the rear end of the first louver and the rear end of the second louver.

[0025] [Action and Effect] The first louver and the second louver form a first gap between the first louver and the second louver. The first louver and the second louver form an entrance of the first gap between the front end of the first louver and the front end of the second louver. The first louver and the second louver form an exit of the first gap between the rear end of the first louver and the rear end of the second louver. Air enters the first gap through the entrance of the first gap. Air flows from the entrance of the first gap to the exit of the first gap. The distance between the front end of the first louver and the front end of the second louver is equal to or greater than the distance between the rear end of the first louver and the rear end of the second louver. Therefore, the exit of the first gap is equal to or narrower than the entrance of the first gap. Therefore, it is easy to make the speed of air at the exit of the first gap equal to or greater than the speed of air at the entrance of the first gap. Therefore, it is easy to increase the amount of air passing through the first gap. The amount of air passing through the first gap corresponds to the amount of air guided to the radiator by the first louver. As a result, it is easy to supply air uniformly throughout the radiator.

[0026] In the above-mentioned saddle riding type vehicle, It is preferable that the distance in the width direction between the front end of the first louver and the front end of the second louver is equal to or greater than the distance in the width direction between the rear end of the first louver and the rear end of the second louver.

[0027] [Function and Effect] For this reason, it is easy for air to enter the first gap from the area in front of the first gap. Therefore, it is easier to increase the amount of air passing through the first gap. In other words, it is easier to increase the amount of air that the first louver guides to the radiator.

[0028] In the above-mentioned saddle riding type vehicle, The rear end of the first louver is preferably disposed at the same position as the rear end of the second louver in the front-rear direction of the saddle riding type vehicle, or at a position forward of the rear end of the second louver.

[0029] [Function and Effect] Therefore, the length of the first louver is not excessively large. The length of the first louver is the distance between the front end of the first louver and the rear end of the first louver. Therefore, the first louver is unlikely to interfere with other parts.

[0030] In the above-mentioned saddle riding type vehicle, It is preferable that the rear end of the first louver is disposed at a position forward of the rear end of the second louver.

[0031] [Function and Effect] Therefore, it is easy to shorten the length of the first louver. Therefore, the first louver is less likely to interfere with other parts.

[0032] In the above-mentioned saddle riding type vehicle, It is preferable that the louver located outside the second louver in the width direction and closest to the second louver is the third louver, and that the first gap between the first louver and the second louver is equal to or larger than the second gap between the second louver and the third louver.

[0033] [Function and Effect] Therefore, it is easier to increase the amount of air passing through the first gap.

[0034] In the above-mentioned saddle riding type vehicle, It is preferable that the third louver has a front end, and the distance between the front end of the first louver and the front end of the second louver is equal to or greater than the distance between the front end of the second louver and the front end of the third louver.

[0035] [Action and Effect] The first and second louvers form an entrance to the first gap between the front end of the first louver and the front end of the second louver. The second and third louvers form an entrance to the second gap between the front end of the second louver and the front end of the third louver. The distance between the front end of the first louver and the front end of the second louver is equal to or greater than the distance between the front end of the second louver and the front end of the third louver. Therefore, the entrance to the first gap is equal to or wider than the entrance to the second gap. Therefore, it is easy to increase the amount of air entering the first gap. Therefore, it is easy to increase the amount of air passing through the first gap.

[0036] In the above-mentioned saddle riding type vehicle, It is preferable that the distance in the width direction between the front end of the first louver and the front end of the second louver is equal to or greater than the distance in the width direction between the front end of the second louver and the front end of the third louver.

[0037] [Function and Effect] For this reason, it is easy for air to enter the first gap from the area in front of the first gap, and therefore it is easier to increase the amount of air passing through the first gap.

[0038] In the above-mentioned saddle riding type vehicle, It is preferable that the third louver has a rear end, and the rear end of the third louver is disposed at the same position as the rear end of the second louver in the front-rear direction of the saddle riding type vehicle.

[0039] [Function and Effect] Therefore, it is easy to simplify the shapes of the second louver and the third louver. It is also easy to make the distance between the rear end of the second louver and the radiator equal to the distance between the rear end of the third louver and the radiator.

[0040] In the above-mentioned saddle riding type vehicle, It is preferable that the louver located outside the third louver in the width direction and closest to the third louver is the fourth louver, and the second gap between the second louver and the third louver is equal to or larger than the third gap between the third louver and the fourth louver.

[0041] [Function and Effect] Therefore, it is easy to increase the amount of air passing through the second gap. Therefore, it is easy to increase the amount of air supplied to the part of the radiator close to the second gap. Therefore, it is easy to supply air uniformly throughout the radiator.

[0042] In the above-mentioned saddle riding type vehicle, The second gap preferably has a size equal to that of the third gap.

[0043] [Function and Effect] Therefore, it is easy to simplify the shapes of the second gap and the third gap. Therefore, it is easy to simplify the shapes of the second louver, the third louver and the fourth louver. Therefore, it is easy to form the radiator grille.

[0044] In the above-mentioned saddle riding type vehicle, It is preferable that the fourth louver has a front end, and the distance between the front end of the second louver and the front end of the third louver is equal to or greater than the distance between the front end of the third louver and the front end of the fourth louver.

[0045] [Action and Effect] The second and third louvers form an entrance to the second gap between the front end of the second louver and the front end of the third louver. The third and fourth louvers form an entrance to the third gap between the front end of the third louver and the front end of the fourth louver. The distance between the front end of the second louver and the front end of the third louver is equal to or greater than the distance between the front end of the third louver and the front end of the fourth louver. Therefore, the entrance to the second gap is equal to or wider than the entrance to the third gap. Therefore, it is easy to increase the amount of air entering the second gap. Therefore, it is even easier to increase the amount of air passing through the second gap.

[0046] In the above-mentioned saddle riding type vehicle, It is preferable that the distance in the width direction between the front end of the second louver and the front end of the third louver is equal to or greater than the distance in the width direction between the front end of the third louver and the front end of the fourth louver.

[0047] [Function and Effect] For this reason, it is easy for air to enter the second gap from the area in front of the second gap, and therefore it is easier to increase the amount of air passing through the second gap.

[0048] In the above-mentioned saddle riding type vehicle, It is preferable that the fourth louver has a rear end, and the rear end of the fourth louver is disposed at the same position as the rear end of the third louver in the front-rear direction of the saddle riding type vehicle.

[0049] [Function and Effect] Therefore, it is easy to simplify the shapes of the third louver and the fourth louver. It is also easy to make the distance between the rear end of the third louver and the radiator equal to the distance between the rear end of the fourth louver and the radiator.

[0050] In the above-mentioned saddle riding type vehicle, It is preferable that the radiator has at least one of a left portion disposed to the left of the vehicle center plane and a right portion disposed to the right of the vehicle center plane.

[0051] [Function and Effect] Even when the radiator includes at least one of a left portion and a right portion, it is easy to supply air uniformly throughout the entire radiator.

[0052] In the above-mentioned saddle riding type vehicle, It is preferable that the radiator comprises an upper tank, a lower tank disposed below the upper tank, and a plurality of pipes extending from the upper tank to the lower tank, the plurality of pipes being aligned in the width direction.

[0053] [Actions and Effects] As described above, it is easy to make the distribution of the amount of air supplied to the radiator uniform in the width direction. Therefore, even when multiple pipes are lined up in the width direction, it is easy to make the cooling performance of each pipe uniform. When multiple pipes are lined up in the width direction, the effect of this saddle-type vehicle is remarkable.

[0054] In the above-mentioned saddle riding type vehicle, It is preferable that the left shroud has a left bulging portion extending forward and leftward from the radiator grille, and the right shroud has a right bulging portion extending forward and rightward from the radiator grille.

[0055] [Function and Effect] The left shroud has a left bulging portion. The left bulging portion extends forward and to the left from the radiator grill. Therefore, the left bulging portion guides air to the radiator grill from an area forward and to the left of the radiator grill. As described above, the first louver protrudes forward more than the louvers other than the first louver. Therefore, it is easy for the first louver to receive air from an area forward and to the left of the radiator grill. Similarly, the right shroud has a right bulging portion. The right bulging portion extends forward and to the right from the radiator grill. Therefore, the right bulging portion guides air to the radiator grill from an area forward and to the right of the radiator grill. As described above, the first louver protrudes forward more than the louvers other than the first louver. Therefore, it is easy for the first louver to receive air from an area forward and to the right of the radiator grill.

[0056] In the above-mentioned saddle riding type vehicle, It is preferable that each louver extends forward and outward in the width direction from the radiator in a plan view of the saddle type vehicle.

[0057] [Function and Effect] Therefore, it is easy for each louver to guide air to the radiator. Furthermore, it is easy for each louver to protect the radiator from flying stones and the like kicked up by the front wheels.

[0058] In the above-mentioned saddle riding type vehicle, Preferably, the radiator has a front surface, and the first louver is closer to perpendicular to the front surface of the radiator than the louvers other than the first louver.

[0059] [Function and Effect] Therefore, it is easy for the first louver to receive air from the area in front of the first louver, and therefore it is easier to increase the amount of air that the first louver guides to the radiator. Effect of the Invention

[0060] According to the saddle-type vehicle of the present invention, air can be supplied uniformly throughout the radiator. [Brief description of the drawings]

[0061] [Figure 1] FIG. 1 is a left side view of a saddle-type vehicle according to an embodiment. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. 11 is an enlarged view of a radiator grille according to a modified embodiment. [Figure 10] FIG. 11 is an enlarged view of a radiator grille according to a modified embodiment. [Figure 11] FIG. 11 is an enlarged view of a radiator grille according to a modified embodiment. [Figure 12] FIG. 11 is an enlarged view of a radiator grille according to a modified embodiment. [Figure 13] FIG. 11 is an enlarged view of a radiator grille according to a modified embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0062] A saddle-type vehicle according to the present invention will now be described with reference to the drawings.

[0063] 1. Schematic configuration of saddle-type vehicle 1 1 is a left side view of a saddle riding type vehicle 1 according to an embodiment of the present invention.

[0064] 1 shows a front-rear direction X, a width direction Y, and a vertical direction Z of a saddle riding type vehicle 1. The front-rear direction X, the width direction Y, and the vertical direction Z are defined based on a driver (also called a rider) riding on the saddle riding type vehicle 1. The front-rear direction X, the width direction Y, and the vertical direction Z are perpendicular to each other. The front-rear direction X and the width direction Y are horizontal. The vertical direction Z is vertical.

[0065] The terms "forward," "rear," "upward," "downward," "rightward," and "leftward" refer to the driver riding on the saddle-type vehicle 1, respectively. Unless otherwise specified in this specification, "forward" and "rearward" include not only a direction parallel to the front-rear direction X, but also a direction close to the front-rear direction X. A direction close to the front-rear direction X is, for example, a direction that forms an angle of 45 degrees or less with the front-rear direction X. Similarly, unless otherwise specified, "rightward" and "leftward" include not only a direction parallel to the width direction Y, but also a direction close to the width direction Y. Unless otherwise specified, "upward" and "downward" include not only a direction parallel to the vertical direction Z, but also a direction close to the vertical direction Z. In each drawing, FRONT, REAR, UP, DOWN, RIGHT, and LEFT are appropriately indicated for reference.

[0066] In this specification, "in a side view of the saddle riding type vehicle 1" will be referred to as "in a side view of the vehicle" as appropriate. "In a plan view of the saddle riding type vehicle 1" will be referred to as "in a plan view of the vehicle" as appropriate.

[0067] The saddle-type vehicle 1 includes a body frame 2. The body frame 2 includes a head pipe 3, a main frame 4, and a down frame 5. The head pipe 3 is provided at the front end of the body frame 2. The main frame 4 is connected to the head pipe 3. The main frame 4 extends rearward and downward from the head pipe 3 in a side view of the vehicle. The down frame 5 is disposed below the main frame 4 in a side view of the vehicle. The down frame 5 extends rearward and downward from the head pipe 3 in a side view of the vehicle. A rear portion of the main frame 4 is connected to a rear portion of the down frame 5.

[0068] The saddle-type vehicle 1 includes a steering device 6. The steering device 6 is supported by a body frame 2. The steering device 6 is supported by a head pipe 3. The steering device 6 is rotatable with respect to the body frame 2. The steering device 6 is rotatable with respect to the head pipe 3.

[0069] The steering device 6 includes a front fork 7. The front fork 7 is supported by the head pipe 3. The front fork 7 extends forward and downward from the head pipe 3 in a side view of the vehicle.

[0070] The saddle-type vehicle 1 includes a front wheel 8 and a front fender 9. The front wheel 8 is supported by a front fork 7. The front wheel 8 is supported at a lower end of the front fork 7. The front wheel 8 is rotatable relative to the front fork 7. The front fender 9 is disposed above the front wheel 8. The front fender 9 is disposed below the head pipe 3. The front fender 9 is supported by the front fork 7. The orientation of the front wheel 8 and the front fender 9 changes as the steering device 6 rotates relative to the body frame 2.

[0071] The saddle-type vehicle 1 includes an engine 10. The engine 10 is supported by a body frame 2. The engine 10 is disposed below a main frame 4. The engine 10 is disposed above a down frame 5. The engine 10 is of a water-cooled type.

[0072] The saddle-type vehicle 1 includes a radiator 11. The radiator 11 is disposed in front of the engine 10. The radiator 11 is disposed above the engine 10. The radiator 11 is connected to the engine 10 via a pipe (not shown) for cooling water. The cooling water circulates between the radiator 11 and the engine 10. The radiator 11 cools the cooling water. The cooling water cools the engine 10.

[0073] The radiator 11 is disposed rearward of the head pipe 3. The radiator 11 is disposed lower than the main frame 4. The radiator 11 is disposed higher than the down frame 5. The radiator 11 is disposed rearward of the front forks 7. The radiator 11 is disposed rearward of the front fender 9.

[0074] The saddle-type vehicle 1 includes a radiator grill 20. The radiator grill 20 is disposed in front of the radiator 11. The radiator grill 20 supplies air to the radiator 11. The air passes through the radiator grill 20 and then passes through the radiator 11.

[0075] The radiator grill 20 is disposed rearward of the head pipe 3. The radiator grill 20 is disposed lower than the main frame 4. The radiator grill 20 is disposed higher than the down frame 5. The radiator grill 20 is disposed rearward of the front forks 7. The radiator grill 20 is disposed rearward of the front fender 9. The radiator grill 20 is disposed forward of the engine 10. The radiator grill 20 is disposed higher than the engine 10.

[0076] The saddle-type vehicle 1 includes a shroud 30. The shroud 30 is also called a cover. The shroud 30 overlaps with at least a portion of the body frame 2 in a side view of the vehicle. The shroud 30 is disposed above the front wheel 8. The shroud 30 is disposed above the engine 10. The shroud 30 overlaps with at least a portion of the radiator 11 in a side view of the vehicle. The shroud 30 overlaps with at least a portion of the radiator grille 20 in a side view of the vehicle.

[0077] Fig. 2 is a front view of the radiator 11. Fig. 2 shows a vehicle center plane C. The vehicle center plane C is an imaginary plane. The vehicle center plane C passes through the center of the head pipe 3. The vehicle center plane C is perpendicular to the width direction Y.

[0078] The down frame 5 is disposed on the vehicle center plane C.

[0079] The radiator 11 is disposed below the head pipe 3. The radiator 11 is disposed at the same height as the down frame 5.

[0080] The shroud 30 includes a left shroud 31L and a right shroud 31R. The left shroud 31L is disposed to the left of the vehicle center plane C. The left shroud 31L is disposed to the left of the down frame 5. The right shroud 31R is disposed to the right of the left shroud 31L. The right shroud 31R is disposed to the right of the vehicle center plane C. The right shroud 31R is disposed to the right of the down frame 5.

[0081] The radiator 11 is disposed between the left shroud 31L and the right shroud 31R. The radiator 11 is disposed to the right of the left shroud 31L. The radiator 11 is disposed to the left of the right shroud 31R.

[0082] The radiator 11 extends in the width direction Y. The radiator 11 extends from a position to the left of the vehicle center plane C to a position to the right of the vehicle center plane C. The radiator 11 extends from a position to the left of the down frame 5 to a position to the right of the down frame 5.

[0083] The radiator 11 includes a left portion 12L and a right portion 12R. The left portion 12L is disposed to the left of the vehicle center plane C. The right portion 12R is disposed to the right of the vehicle center plane C.

[0084] The left portion 12L is disposed to the left of the down frame 5. The right portion 12R is disposed to the right of the down frame 5.

[0085] The structure of the radiator 11 will be described. The radiator 11 includes an upper tank 13 and a lower tank 14. The upper tank 13 is disposed on top of the radiator 11. The lower tank 14 is disposed below the upper tank 13. The radiator 11 includes a plurality of pipes 15. The plurality of pipes 15 extend from the upper tank 13 to the lower tank 14. The plurality of pipes 15 are disposed side by side in the width direction Y. Air passes between the plurality of pipes 15. The plurality of pipes 15 are connected to the upper tank 13 in parallel with each other. The plurality of pipes 15 are connected to the lower tank 14 in parallel with each other. Cooling water flows from the upper tank 13 through the pipes 15 to the lower tank 14. Each pipe 15 cools the cooling water.

[0086] The right portion 12R has a structure common to that of the left portion 12L. The left portion 12L and the right portion 12R each include an upper tank 13, a lower tank 14, and a pipe 15. For example, the left portion 12L and the right portion 12R have a symmetrical shape with respect to the vehicle center plane C.

[0087] 1, the left shroud 31L is disposed above the front wheel 8. Although not shown, the right shroud 31R is disposed above the front wheel 8.

[0088] 3 is a front view of the radiator grill 20. The radiator grill 20 is disposed below the head pipe 3. The radiator grill 20 is disposed at the same height as the down frame 5.

[0089] The radiator grill 20 is disposed between the left shroud 31L and the right shroud 31R. The radiator grill 20 is disposed to the right of the left shroud 31L. The radiator grill 20 is disposed to the left of the right shroud 31R.

[0090] The radiator grill 20 extends in the width direction Y. The radiator grill 20 extends from a position to the left of the vehicle center plane C to a position to the right of the vehicle center plane C. The radiator grill 20 extends from a position to the left of the down frame 5 to a position to the right of the down frame 5.

[0091] The radiator grill 20 includes a left radiator grill 21L and a right radiator grill 21R. The left radiator grill 21L is disposed to the left of the vehicle center plane C. The right radiator grill 21R is disposed to the right of the vehicle center plane C.

[0092] The left radiator grill 21L is disposed to the left of the down frame 5. The right radiator grill 21R is disposed to the right of the down frame 5.

[0093] The structure of the radiator grill 20 will be described. The radiator grill 20 includes a plurality of louvers 40. For example, the radiator grill 20 includes eight louvers 40. The plurality of louvers 40 are arranged side by side in the width direction Y.

[0094] Among all the louvers, the louver 40 closest to the vehicle center plane C is designated as the first louver 41.

[0095] In the width direction Y, a direction approaching the vehicle center plane C is referred to as an "inner side in the width direction Y." In the width direction Y, a direction moving away from the vehicle center plane C is referred to as an "outer side in the width direction Y."

[0096] The louvers 40 located outward in the width direction Y of the first louvers 41 and closest to the first louvers 41 are referred to as second louvers 42. The louvers 40 located outward in the width direction Y of the second louvers 42 and closest to the second louvers 42 are referred to as third louvers 43. The louvers 40 located outward in the width direction Y of the third louvers 43 and closest to the third louvers 43 are referred to as fourth louvers 44.

[0097] The right radiator grill 21R has a structure common to the structure of the left radiator grill 21L. For example, the left radiator grill 21L includes four louvers 40. The right radiator grill 21R includes four louvers 40. For example, the left radiator grill 21L and the right radiator grill 21R have shapes symmetrical with respect to the vehicle center plane C.

[0098] The left radiator grille 21L includes a first set of louvers 40. The first set is made up of a first louver 41, a second louver 42, a third louver 43, and a fourth louver 44. The right radiator grille 21R includes a second set of louvers 40. The second set is made up of another first louver 41, another second louver 42, another third louver 43, and another fourth louver 44.

[0099] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.

[0100] The left and right portions 12L, 12R of the radiator 11 are separated from each other. The right portion 12R is separate from the left portion 12L.

[0101] The radiator 11 is disposed rearward of the down frame 5. The left portion 12L is disposed rearward and to the left of the down frame 5. The right portion 12R is disposed rearward and to the right of the down frame 5.

[0102] The radiator 11 is supported by the down frame 5 via a support portion 16. The right portion 12R is supported by the down frame 5 via a support portion 16. The left portion 12L is supported by the down frame 5 via a support portion 16.

[0103] The radiator 11 is disposed rearward of the front fork 7. The left portion 12L is disposed rearward of the front fork 7. The right portion 12R is disposed rearward of the front fork 7.

[0104] The radiator grill 20 is disposed rearward of the front forks 7. The left radiator grill 21L is disposed rearward of the front forks 7. The right radiator grill 21R is disposed rearward of the front forks 7.

[0105] The radiator grill 20 is disposed in front of the radiator 11. The left radiator grill 21L is disposed in front of the left section 12L. The right radiator grill 21R is disposed in front of the right section 12R.

[0106] The radiator 11 has a front face 17. The front face 17 is substantially perpendicular to the front-to-rear direction X. The radiator grill 20 is attached to the front face 17 of the radiator 11. The left radiator grill 21L is attached to the front face 17 of the left part 12L. The right radiator grill 21R is attached to the front face 17 of the right part 12R.

[0107] The louvers 40 are disposed in front of the radiator 11. The louvers 40 are disposed in front of the front surface 17.

[0108] Each louver 40, in a plan view of the vehicle, extends forward from the radiator 11 and outward in the width direction Y. Each louver 40, in a plan view of the vehicle, extends forward from the front surface 17 and outward in the width direction Y.

[0109] The first louver 41 and the second louver 42 form a first gap G1 between the first louver 41 and the second louver 42. The second louver 42 and the third louver 43 form a second gap G2 between the second louver 42 and the third louver 43. The third louver 43 and the fourth louver 44 form a third gap G3 between the third louver 43 and the fourth louver 44.

[0110] The left shroud 31L is disposed to the left of the front fork 7. The right shroud 31R is disposed to the right of the front fork 7.

[0111] The left shroud 31L has a left bulging portion 32L. The left bulging portion 32L is disposed to the left of the radiator grill 20. The left bulging portion 32L extends forward and leftward from the radiator grill 20. The left bulging portion 32L forms an area forward and leftward of the radiator grill 20. The left bulging portion 32L guides air from an area forward and leftward of the radiator grill 20 to the radiator grill 20.

[0112] The right shroud 31R has a right bulge portion 32R. The right bulge portion 32R is disposed to the right of the radiator grill 20. The right bulge portion 32R extends forward and to the right from the radiator grill 20. The right bulge portion 32R forms an area forward and to the right of the radiator grill 20. The right bulge portion 32R guides air from the area forward and to the right of the radiator grill 20 to the radiator grill 20.

[0113] Although not shown, the radiator grille 20 overlaps with the left bulging portion 32L in a side view of the vehicle. The radiator grille 20 overlaps with the right bulging portion 32R in a side view of the vehicle.

[0114] The saddle riding type vehicle 1 includes a left guide plate 18L. The left guide plate 18L is installed in the gap between the radiator 11 and the left shroud 31L. The left guide plate 18L extends from the left portion 12L to the left bulging portion 32L. For example, the left guide plate 18L extends forward and leftward from the radiator 11 in a plan view of the vehicle. The left guide plate 18L closes the gap between the radiator 11 and the left shroud 31L. Furthermore, the left guide plate 18L guides air from an area forward and to the left of the radiator grill 20 to the radiator grill 20.

[0115] Similarly, the saddle riding type vehicle 1 includes a right guide plate 18R. The right guide plate 18R is installed in the gap between the radiator 11 and the right shroud 31R. The right guide plate 18R extends from the right portion 12R to the right bulging portion 32R. For example, the guide plate 18 extends forward and rightward from the radiator 11 in a plan view of the vehicle. The right guide plate 18R closes the gap between the radiator 11 and the right shroud 31R. Furthermore, the right guide plate 18R guides air from an area forward and to the right of the radiator grill 20 to the radiator grill 20.

[0116] When the saddle riding type vehicle 1 is traveling, air flows rearward inside the shroud 30. In the shroud 30, a first airflow A1, a second airflow A2, and a third airflow A3 are generated. The first airflow A1 flows rearward through a gap between the front fork 7 and the front fender 9. The second airflow A2 flows rearward through a gap between the front fork 7 and the left shroud 31L. The second airflow A2 flows along the left bulging portion 32L. The second airflow A2 flows rearward and leftward, and then flows rearward and rightward. The third airflow A3 flows rearward through a gap between the front fork 7 and the right shroud 31R. The third airflow A3 flows along the right-left bulging portion 32R. The third airflow A3 flows rearward and rightward, and then flows rearward and leftward.

[0117] The first airflow A1, the second airflow A2, and the third airflow A3 flow into the radiator grill 20. The first airflow A1 flows into the radiator grill 20 from an area in front of the radiator grill 20. The second airflow A2 flows into the radiator grill 20 from an area in front of and to the left of the radiator grill 20. The third airflow A3 flows into the radiator grill 20 from an area in front of and to the right of the radiator grill 20.

[0118] The radiator grill 20 receives a first airflow A1, a second airflow A2, and a third airflow A3. Specifically, each louver 40 receives either the second airflow A2 or the third airflow A3. Furthermore, at least one of the louvers 40 receives the first airflow A1.

[0119] The first airflow A1, the second airflow A2, and the third airflow A3 pass through the radiator grill 20. The first airflow A1, the second airflow A2, and the third airflow A3 pass through the first gap G1, the second gap G2, and the third gap G3. Then, the first airflow A1, the second airflow A2, and the third airflow A3 pass through the radiator 11.

[0120] How each louver 40 receives air will now be described.

[0121] For example, the first louver 41 receives air from an area further outward in the width direction Y than the first louver 41. The first louver 41 takes in air from an area further outward in the width direction Y than the first louver 41. The first louver 41 may further receive air from an area in front of the first louver 41. The first louver 41 guides the air to the radiator 11. Specifically, the air enters the first gap G1. The air flows through the first gap G1. The air flows from the first gap G1 to the radiator 11. The air flows to a portion of the radiator 11 located behind the first gap G1.

[0122] Similarly, the second louvers 42 receive air from an area further outward in the width direction Y than the second louvers 41. The second louvers 42 may further receive air from an area in front of the second louvers 42. The second louvers 42 guide the air to the radiator 11. Specifically, the air enters the second gap G2. The air flows through the second gap G2. The air flows from the second gap G2 to the radiator 11. The air flows to a portion of the radiator 11 located rearward of the second gap G2.

[0123] The third louver 43 receives air from an area outward of the third louver 43 in the width direction Y. The third louver 43 may further receive air from an area in front of the third louver 43. The third louver 43 guides the air to the radiator 11. Specifically, the air enters the third gap G3. The air flows through the third gap G3. The air flows from the third gap G3 to the radiator 11. The air flows to a portion of the radiator 11 located behind the third gap G3.

[0124] The fourth louver 44 receives air from an area outward of the fourth louver 44 in the width direction Y. The fourth louver 44 may further receive air from an area in front of the fourth louver 44. The fourth louver 44 guides the air to the radiator 11.

[0125] 5 is an enlarged view of the radiator grill 20. For convenience, the detailed shape of the radiator grill 20 will be described using the left radiator grill 21L as an example.

[0126] The first louvers 41 protrude further forward than the louvers 40 other than the first louvers 41. The first louvers 41 protrude further forward than any of the second louvers 42, the third louvers 43 and the fourth louvers 44.

[0127] The first louver 41 has a front end 41F. The front end 41F is located further forward than the front ends of the louvers 40 other than the first louver 41. The second louver 42 has a front end 42F. The third louver 43 has a front end 43F. The fourth louver 44 has a front end 44F. The front end 41F is located further forward than all of the front ends 42F, 43F, and 44F.

[0128] Front end 42F is disposed at a position forward of front end 43F. Front end 43F is disposed at a position forward of front end 44F.

[0129] Of two louvers 40 adjacent to each other in the width direction Y, one louver 40 closer to the vehicle center plane C is defined as the inner louver, and the other louver 40 is defined as the outer louver. The front end of the inner louver is positioned forward of the front end of the outer louver.

[0130] For example, when the inner louver is the first louver 41, the outer louver is the second louver 42. For example, when the inner louver is the second louver 42, the outer louver is the third louver 43. For example, when the inner louver is the third louver 43, the outer louver is the fourth louver 44.

[0131] For example, the inner louvers are first louvers 41 and the outer louvers are second louvers 42. In this case, the front ends of the inner louvers are positioned forward of the front ends of the outer louvers. Specifically, the front end 41F is positioned forward of the front end 42F.

[0132] For example, the inner louvers are the second louvers 42, and the outer louvers are the third louvers 43. In this case, the front ends of the inner louvers are positioned forward of the front ends of the outer louvers. Specifically, the front end 42F is positioned forward of the front end 43F.

[0133] For example, the inner louver is the third louver 43, and the outer louver is the fourth louver 44. In this case, the front end of the inner louver is disposed in a position forward of the front end of the outer louver. Specifically, the front end 43F is disposed in a position forward of the front end 44F.

[0134] The first louver 41 has a rear end 41R. The rear end 41R is disposed rearward of the front end 41F. The rear end 41R is disposed rearward of the front end 42F.

[0135] The second louvers 42 have rear ends 42R. The rear ends 41R of the first louvers 41 are disposed at the same position as the rear ends 42R of the second louvers 42 in the front-rear direction X.

[0136] The third louver 43 has a rear end 43R. The rear end 43R is disposed at the same position in the front-rear direction X as the rear end 42R.

[0137] The fourth louver 44 has a rear end 44R. The rear end 44R is disposed at the same position in the front-rear direction X as the rear end 43R.

[0138] The first gap G1 is larger than the second gap G2.

[0139] The second gap G2 has a size equal to that of the third gap G3.

[0140] 6 is an enlarged view of the radiator grille 20. Each louver 40 has an inclination angle θ with respect to the front-rear direction X. The inclination angle θ is an acute intersection angle between the louver 40 and the front-rear direction X. The first louver 41 has an inclination angle θ1 with respect to the front-rear direction X. The inclination angle θ1 is smaller than the inclination angles θ of the louvers 40 other than the first louver 41.

[0141] The second louvers 42 have an inclination angle θ2 with respect to the front-rear direction X. The third louvers 43 have an inclination angle θ3 with respect to the front-rear direction X. The fourth louvers 44 have an inclination angle θ4 with respect to the front-rear direction X. The inclination angle θ1 is smaller than the inclination angle θ2. The inclination angle θ1 is smaller than the inclination angle θ3. The inclination angle θ1 is smaller than the inclination angle θ4.

[0142] The first louvers 41 are closer to being perpendicular to the front surface 17 of the radiator 11 than the louvers 40 other than the first louvers 41 .

[0143] The inclination angles θ of the louvers 40 other than the first louver 41 are equal to each other. Specifically, the inclination angles θ2, θ3, and θ4 are equal to each other.

[0144] The inclination angle θ of the inner louvers is equal to or less than the inclination angle θ of the outer louvers.

[0145] For example, the inner louvers are first louvers 41 and the outer louvers are second louvers 42. In this case, the inclination angle θ of the inner louvers is smaller than the inclination angle θ of the outer louvers. Specifically, the inclination angle θ1 is smaller than the inclination angle θ2.

[0146] For example, the inner louver is the second louver 42, and the outer louver is the third louver 43. In this case, the inclination angle θ of the inner louver is equal to the inclination angle θ of the outer louver. Specifically, the inclination angle θ2 is equal to the inclination angle θ3.

[0147] For example, the inner louver is the third louver 43, and the outer louver is the fourth louver 44. In this case, the inclination angle θ of the inner louver is equal to the inclination angle θ of the outer louver. Specifically, the inclination angle θ3 is equal to the inclination angle θ4.

[0148] 7 is an enlarged view of the radiator grille 20. A separation distance D1 is a separation distance between the front end 41F and the front end 42F. A separation distance E1 is a separation distance between the rear end 41R and the rear end 42R. The separation distance D1 is greater than the separation distance E1.

[0149] The separation distance D2 is the distance between the front end 42F and the front end 43F. The separation distance E2 is the distance between the rear end 42R and the rear end 43R. The separation distance D2 is smaller than the separation distance E2.

[0150] The separation distance D3 is the distance between the front end 43F and the front end 44F. The separation distance E3 is the distance between the rear end 43R and the rear end 44R. The separation distance D3 is smaller than the separation distance E3.

[0151] The separation distance D1 is greater than the separation distance D2.

[0152] The separation distance D2 is equal to the separation distance D3.

[0153] The separation distance E1 is equal to the separation distance E2.

[0154] The separation distance E2 is equal to the separation distance E3.

[0155] 8 is an enlarged view of the radiator grille 20. Distance H1 is the distance between the front end 41F and the front end 42F in the width direction Y. Distance K1 is the distance between the rear end 41R and the rear end 42R in the width direction Y. Distance H1 is greater than distance K1.

[0156] Distance H2 is the distance between front end 42F and front end 43F in the width direction Y. Distance K2 is the distance between rear end 42R and rear end 43R in the width direction Y. Distance H2 is smaller than distance K2.

[0157] Distance H3 is the distance between front end 43F and front end 44F in the width direction Y. Distance K3 is the distance between rear end 43R and rear end 44R in the width direction Y. Distance H3 is smaller than distance K3.

[0158] The distance H1 is greater than the distance H2.

[0159] The distance H2 is equal to the distance H3.

[0160] The distance K1 is equal to the distance K2.

[0161] The distance K2 is equal to the distance K3.

[0162] 2. Effects of the embodiment The saddle riding type vehicle 1 includes a front fork 7, a left shroud 31L, a right shroud 31R, a radiator 11, and a radiator grill 20. The left shroud 31L is disposed to the left of the front fork 7. The right shroud 31R is disposed to the right of the front fork 7. The radiator 11 is disposed rearward of the front fork 7. The radiator 11 is disposed between the left shroud 31L and the right shroud 31R. The radiator grill 20 is disposed rearward of the front fork 7. The radiator grill 20 is disposed between the left shroud 31L and the right shroud 31R. The radiator grill 20 is disposed in front of the radiator 11. The radiator grill 20 supplies air to the radiator 11. The air passes through the radiator grill 20 and then passes through the radiator 11.

[0163] The radiator grille 20 includes a plurality of louvers 40. The plurality of louvers 40 are aligned in the width direction Y. The first louver 41 is the closest to the vehicle center plane C among all the louvers 40. The vehicle center plane C is a virtual plane. The vehicle center plane C passes through the center of the head pipe 3. The vehicle center plane C is perpendicular to the width direction Y. The first louver 41 protrudes forward more than the louvers 40 other than the first louver 41. In other words, the front end 41F of the first louver 41 is located forward more than the front ends of the louvers 40 other than the first louver 41. For this reason, it is easy for the first louver 41 to receive air from an area outside the first louver 41 in the width direction Y. Therefore, it is easy to increase the amount of air received by the first louver 41. It is easy to increase the amount of air guided by the first louver 41 to the radiator 11. Therefore, it is easy to increase the amount of air supplied to the portion of the radiator 11 close to the first louver 41. As a result, it is easy to supply air uniformly throughout the entire radiator 11. Specifically, it is easy to make the distribution of the amount of air supplied to the radiator 11 uniform in the width direction Y.

[0164] The front ends of the inner louvers are positioned further forward than the front ends of the outer louvers. Therefore, it is easy for the inner louvers to receive air from an area further outward in the width direction Y than the inner louvers. Therefore, it is easy to increase the amount of air received by the inner louvers. It is easy to increase the amount of air that the inner louvers guide to the radiator 11. Therefore, it is easy to increase the amount of air supplied to the portion of the radiator 11 close to the inner louvers. As a result, it is easy to supply air uniformly throughout the entire radiator 11.

[0165] The inclination angle θ1 of the first louver 41 is smaller than the inclination angle θ of the louvers 40 other than the first louver 41. Therefore, it is easy for the first louver 41 to receive air from the area in front of the first louver 41. Therefore, it is even easier for the first louver 41 to increase the amount of air that is guided to the radiator 11.

[0166] The inclination angles θ of the louvers 40 other than the first louvers 41 are equal to each other. Therefore, it is easy to simplify the shape of the louvers 40 other than the first louvers 41. Therefore, it is easy to form the radiator grille 20.

[0167] The inclination angle θ of the inner louvers is equal to or smaller than the inclination angle θ of the outer louvers. Therefore, it is easy for the inner louvers to receive air from the area in front of the inner louvers. Therefore, it is easy to increase the amount of air that the inner louvers guide to the radiator 11. Therefore, it is easy to increase the amount of air supplied to the part of the radiator 11 close to the inner louvers 11. As a result, it is easy to supply air uniformly throughout the radiator.

[0168] The first louver 41 and the second louver 42 form a first gap G1 between the first louver 41 and the second louver 42. The first louver 41 and the second louver 42 form an inlet of the first gap G1 between the front end 41F and the front end 42F. The first louver 41 and the second louver 42 form an outlet of the first gap G between the rear end 41R and the rear end 42R. Air enters the first gap G1 through the inlet of the first gap G1. Air flows from the inlet of the first gap G1 to the outlet of the first gap G1. Here, the separation distance D1 is greater than the separation distance E1. Therefore, the outlet of the first gap G1 is narrower than the inlet of the first gap G1. Due to the Venturi effect, it is easy to make the speed of air at the outlet of the first gap G1 greater than the speed of air at the inlet of the first gap G1. Therefore, it is easy to increase the amount of air passing through the first gap G1. The amount of air passing through the first gap G1 corresponds to the amount of air guided by the first louver 41 to the radiator 11. As a result, it is easy to supply air uniformly throughout the radiator 11.

[0169] The distance H1 is greater than the distance K1. Therefore, it is easy for air to enter the first gap G1 from the area in front of the first gap G1. Therefore, it is easier to increase the amount of air passing through the first gap G1. That is, it is easier to increase the amount of air that the first louver 41 guides to the radiator 11.

[0170] The rear end 41R of the first louver 41 is disposed at the same position as the rear end 42R of the second louver 42 in the front-rear direction X. Therefore, the length of the first louver 41 is not excessively large. The length of the first louver 41 is the distance between the front end 41F and the rear end 41R. Therefore, the first louver 41 is unlikely to interfere with other components. The other components are, for example, the support portion 16.

[0171] The first gap G1 is larger than the second gap G2, so it is easier to increase the amount of air passing through the first gap G1.

[0172] The first louver 41 and the second louver 42 form an entrance of the first gap G1 between the front end 41F and the front end 42F. The second louver 42 and the third louver 43 form an entrance of the second gap G2 between the front end 42F and the front end 43F. Here, the separation distance D1 is greater than the separation distance D2. Therefore, the entrance of the first gap G1 is wider than the entrance of the second gap G2. Therefore, it is easy to increase the amount of air entering the first gap G1. Therefore, it is easy to increase the amount of air passing through the first gap G1.

[0173] The distance H1 is greater than the distance H2. Therefore, it is easy for air to enter the first gap G1 from the area in front of the first gap G1. Therefore, it is easier to increase the amount of air passing through the first gap G1.

[0174] The rear end 43R of the third louver 43 is disposed at the same position as the rear end 42R of the second louver 42 in the front-rear direction X. Therefore, it is easy to simplify the shapes of the second louver 42 and the third louver 43. It is also easy to make the distance between the rear end 42R and the radiator 11 equal to the distance between the rear end 43R and the radiator 11.

[0175] The second gap G2 has a size equivalent to that of the third gap G3. Therefore, it is easy to simplify the shapes of the second gap G2 and the third gap G3. Therefore, it is easy to simplify the shapes of the second louver 42, the third louver 43, and the fourth louver 44. Therefore, it is easy to form the radiator grille 20.

[0176] The second louver 42 and the third louver 43 form an entrance of the second gap G2 between the front end 42F and the front end 43F. The third louver 43 and the fourth louver 44 form an entrance of the third gap G3 between the front end 43F and the front end 44F. Here, the separation distance D2 is equal to the separation distance D3. Therefore, the entrance of the second gap G2 is as wide as the entrance of the third gap G3. Therefore, it is easy to increase the amount of air entering the second gap G2. Therefore, it is even easier to increase the amount of air passing through the second gap G2.

[0177] The distance H2 is equal to the distance H3. Therefore, it is easy for air to enter the second gap G2 from the area in front of the second gap G2. Therefore, it is easier to increase the amount of air passing through the second gap G2.

[0178] The rear end 44R of the fourth louver 44 is disposed at the same position as the rear end 43R of the third louver 43 in the front-rear direction X. Therefore, it is easy to simplify the shapes of the third louver 43 and the fourth louver 44. It is also easy to make the distance between the rear end 43R and the radiator 11 equal to the distance between the rear end 44R and the radiator 11.

[0179] As described above, the radiator 11 includes the left portion 12L and the right portion 12R. Even when the radiator 11 includes the left portion 12L and the right portion 12R, according to this embodiment, it is easy to supply air uniformly throughout the radiator 11.

[0180] The radiator 11 includes an upper tank 13, a lower tank 14, and a plurality of pipes 15. The lower tank 14 is disposed below the upper tank 13. The plurality of pipes 15 extend from the upper tank 13 to the lower tank 14. The plurality of pipes 15 are aligned in the width direction Y. As described above, in this embodiment, it is easy to uniformize the distribution of the amount of air supplied to the radiator 11 in the width direction Y. Therefore, even when the plurality of pipes 15 are aligned in the width direction Y, it is easy to uniformize the cooling performance of each pipe 15. When the plurality of pipes 15 are aligned in the width direction Y, the effect of the present saddle riding type vehicle 1 is remarkable.

[0181] The left shroud 31L has a left bulging portion 32L. The left bulging portion 32L extends forward and leftward from the radiator grill 20. Therefore, the left bulging portion 32L guides air to the radiator grill 20 from an area forward and to the left of the radiator grill 20. As described above, the first louver 41 protrudes forward more than the louvers 40 other than the first louver 41. Therefore, it is easy for the first louver 41 to receive air from an area forward and to the left of the radiator grill 20.

[0182] The right shroud 31R has a right bulging portion 32R. The right bulging portion 32R extends forward and to the right from the radiator grill 20. Therefore, the right bulging portion 32R guides air to the radiator grill 20 from an area forward and to the right of the radiator grill 20. As described above, the first louver 41 protrudes forward more than the louvers 40 other than the first louver 41. Therefore, it is easy for the first louver 41 to receive air from an area forward and to the right of the radiator grill 20.

[0183] Each louver 40 extends forward and outward in the width direction Y from the radiator 11 in a plan view of the vehicle. Therefore, it is easy for each louver 40 to guide air to the radiator 11. Furthermore, it is easy for each louver 40 to protect the radiator 11 from flying stones and the like kicked up by the front wheels 8.

[0184] The first louvers 41 are closer to being perpendicular to the front surface 17 of the radiator 11 than the louvers 40 other than the first louvers 41. Therefore, it is easier for the first louvers 41 to receive air from the area in front of the first louvers 41. Therefore, it is easier for the first louvers 41 to increase the amount of air that they guide to the radiator 11.

[0185] 3. Modified embodiments The present invention is not limited to the above-described embodiment, but can be modified as follows.

[0186] (1) In the above embodiment, the inclination angles θ of the louvers 40 other than the first louvers 41 are equal to each other. However, the relationship between the inclination angles θ of the louvers 40 other than the first louvers 41 is not limited to this.

[0187] 9 is an enlarged view of the radiator grille 20 according to the modified embodiment. Note that the same components as those in the embodiment are given the same reference numerals and detailed description thereof will be omitted.

[0188] The inclination angles θ of the louvers 40 other than the first louver 41 are different from each other. Specifically, the second louver 42 has an inclination angle θ2. The third louver 43 has an inclination angle θ3. The fourth louver 44 has an inclination angle θ4. The inclination angle θ2 is different from the inclination angle θ3. The inclination angle θ2 is different from the inclination angle θ4. The inclination angle θ3 is different from the inclination angle θ4. Even with this modified embodiment, it is easy to supply air uniformly throughout the entire radiator 11.

[0189] (2) In the embodiment, when the inner louvers are the second louvers 42 and the outer louvers are the third louvers 43, the inclination angle θ of the inner louvers is equal to the inclination angle θ of the outer louvers. In an embodiment, when the inner louver is the third louver 43 and the outer louver is the fourth louver 44, the inclination angle θ of the inner louver is equal to the inclination angle θ of the outer louver. However, the relationship between the inclination angle θ of the inner louver and the inclination angle θ of the outer louver is not limited thereto.

[0190] Refer to Figure 9. When the inner louver is the second louver 42 and the outer louver is the third louver 43, the inclination angle θ of the inner louver is smaller than the inclination angle θ of the outer louver. Specifically, the inclination angle θ2 is smaller than the inclination angle θ3.

[0191] When the inner louvers are the third louvers 43 and the outer louvers are the fourth louvers 44, the inclination angle θ of the inner louvers is smaller than the inclination angle θ of the outer louvers. Specifically, the inclination angle θ3 is smaller than the inclination angle θ4.

[0192] According to this modified embodiment, the closer the distance between the louvers 40 and the vehicle center plane C, the smaller the inclination angle θ of the louvers. Therefore, it is easier for the inner louvers to receive air from the area in front of the inner louvers. Therefore, it is easier to increase the amount of air that the inner louvers guide to the radiator 11. Therefore, it is easier to increase the amount of air supplied to the portion of the radiator 11 close to the inner louvers 11. As a result, it is easier to supply air uniformly throughout the radiator.

[0193] (3) In the embodiment, when the inner louvers are the first louvers 41 and the outer louvers are the second louvers 42, the inclination angle θ of the inner louvers is smaller than the inclination angle θ of the outer louvers. However, the relationship between the inclination angle θ of the inner louvers and the inclination angle θ of the outer louvers is not limited to this.

[0194] 10 is an enlarged view of the radiator grille 20 according to the modified embodiment. The same components as those in the embodiment are denoted by the same reference numerals and detailed description thereof will be omitted.

[0195] When the inner louvers are the first louvers 41 and the outer louvers are the second louvers 42, the inclination angle θ of the inner louvers is equal to the inclination angle θ of the outer louvers. Specifically, the inclination angle θ1 is equal to the inclination angle θ2. Even with this modified embodiment, it is easy to increase the amount of air that the inner louvers guide to the radiator 11.

[0196] (4) In the embodiment, the inclination angle θ1 is smaller than all of the inclination angles θ2, θ3, and θ4. However, the relationship between the inclination angles θ1, θ2, θ3, and θ4 is not limited to this.

[0197] Refer to Figure 10. The tilt angle θ1 is equal to the tilt angle θ2. The tilt angle θ1 is equal to the tilt angle θ3. The tilt angle θ1 is equal to the tilt angle θ4.

[0198] The inclination angle θ 1 of the first louver 41 is equal to the inclination angle θ of the louvers 40 other than the first louver 41 .

[0199] The inclination angles θ of the louvers 40 are equal to each other.

[0200] Even in this modified embodiment, it is easy for the first louvers 41 to receive air from the area in front of the first louvers 41. Therefore, it is even easier to increase the amount of air that the first louvers 41 guides to the radiator 11.

[0201] (5) In the embodiment, when the inner louvers are the second louvers 42 and the outer louvers are the third louvers 43, the front ends of the inner louvers are positioned forward of the front ends of the outer louvers. In the embodiment, when the inner louvers are the third louvers 43 and the outer louvers are the fourth louvers 44, the front ends of the inner louvers are positioned in a position forward of the front ends of the outer louvers. However, the relationship between the front ends of the inner louvers and the front ends of the outer louvers is not limited to this.

[0202] Refer to Fig. 10. When the inner louvers are the second louvers 42 and the outer louvers are the third louvers 43, the front ends of the inner louvers are disposed in the same position as the front ends of the outer louvers in the front-rear direction X. Specifically, the front end 42F is disposed in the same position as the front end 43F in the front-rear direction X.

[0203] When the inner louvers are the third louvers 43 and the outer louvers are the fourth louvers 44, the front ends of the inner louvers are disposed in the same position as the front ends of the outer louvers in the front-rear direction X. Specifically, the front end 43F is disposed in the same position as the front end 44F in the front-rear direction X.

[0204] The front ends of the louvers 40 other than the first louver 41 are disposed at the same position in the front-rear direction X. Specifically, the front ends 42F, 43F, 44F are disposed at the same position in the front-rear direction X.

[0205] Even in this modified embodiment, it is easy for the inner louvers to receive air from an area outward in the width direction Y than the inner louvers. Therefore, it is easy to increase the amount of air received by the inner louvers. It is easy to increase the amount of air guided by the inner louvers to the radiator 11. Therefore, it is easy to increase the amount of air supplied to the portion of the radiator 11 close to the inner louvers. As a result, it is easy to supply air uniformly throughout the entire radiator 11.

[0206] (6) In the embodiment, the first gap G1 is larger than the second gap G2. However, the relationship between the first gap G1 and the second gap G2 is not limited to this.

[0207] 11 is an enlarged view of a radiator grille 20 according to a modified embodiment. Note that the same components as those in the embodiment are given the same reference numerals and detailed description thereof will be omitted.

[0208] The first gap G1 has a size equal to that of the second gap G2. In this modified embodiment, it is also easy to increase the amount of air passing through the first gap G1.

[0209] (7) In the embodiment, the separation distance D1 is greater than the separation distance D2. However, the relationship between the separation distance D1 and the separation distance D2 is not limited to this.

[0210] Refer to FIG. 11. The separation distance D1 is equal to the separation distance D2. According to this modified embodiment, the entrance of the first gap G1 is as wide as the entrance of the second gap G2. Therefore, it is easy to increase the amount of air entering the first gap G1. Therefore, it is easy to increase the amount of air passing through the first gap G1.

[0211] (8) In the embodiment, the distance H1 is greater than the distance H2. However, the relationship between the distance H1 and the distance H2 is not limited to this.

[0212] Refer to FIG. 11. The distance H1 is equal to the distance H2. Even in this modified embodiment, it is easy for air to enter the first gap G1 from the area in front of the first gap G1. Therefore, it is easier to increase the amount of air passing through the first gap G1.

[0213] (9) In the embodiment, the separation distance D1 is greater than the separation distance E1. However, the relationship between the separation distance D1 and the separation distance E1 is not limited to this.

[0214] Refer to Fig. 11. The separation distance D1 is smaller than the separation distance E1. In this modified embodiment, the outlet of the first gap G1 is wider than the inlet of the first gap G1. Even in this modified embodiment, it is easy to supply air uniformly throughout the radiator 11.

[0215] (10) In the embodiment, the distance H1 is greater than the distance K1. However, the relationship between the distance H1 and the distance K1 is not limited to this.

[0216] See Fig. 11. The distance H1 is smaller than the distance K1. Even with this modified embodiment, it is easy to supply air uniformly throughout the radiator 11.

[0217] (11) In the embodiment, the separation distance D1 is greater than the separation distance E1. However, the relationship between the separation distance D1 and the separation distance E1 is not limited to this.

[0218] 12 is an enlarged view of the radiator grille 20 according to the modified embodiment. The same components as those in the embodiment are denoted by the same reference numerals and detailed description thereof will be omitted.

[0219] The separation distance D1 is equal to the separation distance E1. In this modified embodiment, the outlet of the first gap G1 is as narrow as the inlet of the first gap G1. Therefore, it is easy to make the air speed at the outlet of the first gap G1 equal to the air speed at the inlet of the first gap G1. Therefore, it is easy to increase the amount of air passing through the first gap G1. The amount of air passing through the first gap G1 corresponds to the amount of air guided by the first louver 41 to the radiator 11. As a result, it is easy to supply air uniformly throughout the entire radiator 11.

[0220] (12) In the embodiment, the separation distance D2 is smaller than the separation distance E2. However, the relationship between the separation distance D2 and the separation distance E2 is not limited to this. Similarly, in the embodiment, the separation distance D3 is smaller than the separation distance E3. However, the relationship between the separation distance D3 and the separation distance E3 is not limited to this.

[0221] Refer to Fig. 12. The separation distance D2 is greater than the separation distance E2. In this modified embodiment, the inlet of the second gap G2 is wider than the outlet of the second gap G2. Therefore, it is easy to increase the amount of air entering the second gap G2.

[0222] The separation distance D3 is greater than the separation distance E3. In this modified embodiment, the inlet of the third gap G3 is wider than the outlet of the third gap G3. Therefore, it is easy to increase the amount of air entering the third gap G3.

[0223] (13) In the embodiment, the distance H1 is greater than the distance K1. However, the relationship between the distance H1 and the distance K1 is not limited to this.

[0224] Refer to FIG. 12. Distance H1 is equal to distance K1. Even in this modified embodiment, it is easy for air to enter the first gap G1 from the area in front of the first gap G1. Therefore, it is easier to increase the amount of air passing through the first gap G1. In other words, it is easier to increase the amount of air that the first louver 41 guides to the radiator 11.

[0225] (14) In the embodiment, the rear end 41R of the first louvers 41 is disposed at the same position as the rear end 42R of the second louvers 42 in the front-rear direction X. However, the relationship between the rear ends 41R and 42R is not limited to this.

[0226] Refer to FIG. 12. The rear end 41R of the first louver 41 is located at a position forward of the rear end 42R of the second louver 42. According to this modified embodiment, it is easy to shorten the length of the first louver 41. Therefore, the first louver 41 is less likely to interfere with other components. The other components are, for example, the support portion 16. That is, the first louver 41 is less likely to interfere with the support portion 16.

[0227] (15) In the embodiment, the separation distance D2 is equal to the separation distance D3. However, the relationship between the separation distance D2 and the separation distance D3 is not limited to this.

[0228] Refer to FIG. 12. The separation distance D2 is greater than the separation distance D3. In this modified embodiment, the inlet of the second gap G2 is wider than the inlet of the third gap G3. Therefore, it is easy to increase the amount of air entering the second gap G2. Therefore, it is even easier to increase the amount of air passing through the second gap G2.

[0229] (16) In the embodiment, the distance H2 is equal to the distance H3. However, the relationship between the distance H2 and the distance H3 is not limited to this.

[0230] Refer to FIG. 12. The distance H2 is greater than the distance H3. Even in this modified embodiment, it is easy for air to enter the second gap G2 from the area in front of the second gap G2. Therefore, it is easier to increase the amount of air passing through the second gap G2.

[0231] (17) In the embodiment, the second gap G2 has a size equal to that of the third gap G3. However, the relationship between the second gap G2 and the third gap G3 is not limited to this.

[0232] Please refer to Fig. 12. The second gap G2 is larger than the third gap G3. According to this modified embodiment, it is easy to increase the amount of air passing through the second gap G2.

[0233] (18) In the embodiment, the separation distance E1 is equal to the separation distance E2. However, the relationship between the separation distance E1 and the separation distance E2 is not limited to this.

[0234] Refer to Fig. 12. The separation distance E1 is greater than the separation distance E2. In this modified embodiment, the outlet of the first gap G1 is wider than the outlet of the second gap G2. Therefore, it is easy to increase the amount of air passing through the first gap G1.

[0235] (19) In the embodiment, the separation distance E2 is equal to the separation distance E3. However, the relationship between the separation distance E2 and the separation distance E3 is not limited to this.

[0236] Refer to Fig. 12. The separation distance E2 is greater than the separation distance E3. In this modified embodiment, the outlet of the second gap G2 is wider than the outlet of the third gap G3. Therefore, it is easy to increase the amount of air passing through the second gap G2.

[0237] (20) In the embodiment, the distance K1 is equal to the distance K2. However, the relationship between the distance K1 and the distance K2 is not limited to this.

[0238] See Fig. 12. The distance K1 is greater than the distance K2. In this modified embodiment, it is easy to increase the amount of air passing through the first gap G1.

[0239] (21) In the embodiment, the distance K2 is equal to the distance K3. However, the relationship between the distance K2 and the distance K3 is not limited to this.

[0240] See Fig. 12. The distance K2 is greater than the distance K3. In this modified embodiment, it is easy to increase the amount of air passing through the second gap G2.

[0241] (22) In the embodiment, the separation distance D2 is smaller than the separation distance E2. However, the relationship between the separation distance D2 and the separation distance E2 is not limited to this.

[0242] Refer to FIG. 13. The separation distance D2 is equal to the separation distance E2. In this modified embodiment, the entrance of the second gap G2 is as wide as the exit of the second gap G2. Therefore, it is easy to increase the amount of air entering the second gap G2. Therefore, it is easy to increase the amount of air passing through the second gap G2.

[0243] (23) In the embodiment, the separation distance D3 is smaller than the separation distance E3. However, the relationship between the separation distance D3 and the separation distance E3 is not limited to this.

[0244] Refer to FIG. 13. The separation distance D3 is equal to the separation distance E3. In this modified embodiment, the entrance of the third gap G3 is as wide as the exit of the third gap G3. Therefore, it is easy to increase the amount of air entering the third gap G3. Therefore, it is easy to increase the amount of air passing through the third gap G3.

[0245] (24) In the embodiment, the distance H2 is smaller than the distance K2. However, the relationship between the distance H2 and the distance K2 is not limited to this.

[0246] Refer to FIG. 13. Distance H2 is equal to distance K2. In this modified embodiment, the entrance of the second gap G2 is as wide as the exit of the second gap G2. Therefore, it is easy to increase the amount of air entering the second gap G2. Therefore, it is easy to increase the amount of air passing through the second gap G2.

[0247] (25) In the embodiment, the distance H3 is smaller than the distance K3. However, the relationship between the distance H3 and the distance K3 is not limited to this.

[0248] Refer to FIG. 13. Distance H3 is equal to distance K3. In this modified embodiment, the entrance of the third gap G3 is as wide as the exit of the third gap G3. Therefore, it is easy to increase the amount of air entering the third gap G3. Therefore, it is easy to increase the amount of air passing through the third gap G3.

[0249] (26) In the embodiment, the first set of louvers 40 included in the left radiator grille 21L is composed of four louvers 40. The first set includes a first louver 41, a second louver 42, a third louver 43, and a fourth louver 44. However, the configuration of the first set is not limited to this.

[0250] For example, the first set may be made up of two louvers 40. The first set may be made up of three louvers 40. The first set may be made up of more than four louvers 40.

[0251] For example, the fourth louver 44 may be omitted.

[0252] For example, the third louver 43 may be omitted.

[0253] For example, the first set may further include a fifth louver (not shown).

[0254] Like the first set, the second set of louvers 40 included in the right radiator grille 21R may be modified.

[0255] (27) In the embodiment, the radiator 11 has the left portion 12L and the right portion 12R, but this is not limited to the above. The radiator 11 may have either the left portion 12L or the right portion 12R. For example, the radiator 11 may have only the left portion 12L. Or, the radiator 11 may have only the right portion 12R. This makes it easy to arrange the radiator 11 in an appropriate position.

[0256] (28) In the embodiment, the left portion 12L and the right portion 12R are separated from each other. However, the relationship between the left portion 12L and the right portion 12R is not limited to this. For example, the left portion 12L and the right portion 12R may be connected to each other. The left portion 12L and the right portion 12R may be integrally formed.

[0257] (29) The embodiment and each of the modified embodiments described above in (1) to (28) may be further modified as appropriate by replacing or combining each configuration with the configuration of another modified embodiment. [Explanation of symbols]

[0258] 1: Saddle-type vehicle 2: Body frame 3: Head pipe 4: Mainframe 5: Down frame 6: Steering device 7: Front fork 8: Front wheel 9: Front fender 10: Engine 11: Radiator 12L: Left part 12R: Right part 13: Upper tank 14: Lower tank 15: Piping 16: Support part 17:Front 18L: Left guide plate 18R: Right guide plate 20: Radiator grill 21L: Left radiator grill 21R: Right radiator grill 30: Shroud 31L: Left shroud 31R: Right Shroud 32L: Left bulge 32R: Right bulge 40: Louver 41: First louver 42: Second louver 43: 3rd louver 44: 4th louver

Claims

1. A saddle-type vehicle, Head pipe and a front fork supported by the head pipe; A front wheel supported by the front fork; a left shroud disposed to the left of the front fork and above the front wheel; a right shroud disposed to the right of the front fork and above the front wheel; a radiator disposed rearward of the front fork and between the left shroud and the right shroud; a radiator grill disposed rearward of the front fork, between the left shroud and the right shroud, and in front of the radiator; Equipped with The radiator grille includes a plurality of louvers. The plurality of louvers are aligned in a width direction of the saddle riding type vehicle, a virtual plane that passes through the center of the head pipe and is perpendicular to the width direction is defined as a vehicle center plane, Among all the louvers, the louver closest to the vehicle center plane is designated as a first louver; The first louver protrudes forward further than louvers other than the first louver. Saddle-type vehicle.

2. The saddle type vehicle according to claim 1, Of the two louvers adjacent to each other in the width direction, one louver closer to the vehicle center plane is an inner louver, and the other louver is an outer louver; The inner louver has a front end, the outer louvers have a front end; The front end of the inner louver is disposed at the same position as the front end of the outer louver in the front-rear direction of the saddle riding type vehicle, or at a position forward of the front end of the outer louver. Saddle-type vehicle.

3. The saddle type vehicle according to claim 2, The front end of the inner louver is disposed forward of the front end of the outer louver. Saddle-type vehicle.

4. The saddle type vehicle according to claim 1, Each louver has an inclination angle with respect to the front-rear direction of the saddle riding type vehicle, The inclination angle of the first louver is equal to or smaller than the inclination angle of the louvers other than the first louver. Saddle-type vehicle.

5. The saddle type vehicle according to claim 4, The inclination angles of the louvers other than the first louver are equal to each other. Saddle-type vehicle.

6. The saddle type vehicle according to claim 1, Of the two louvers adjacent to each other in the width direction, one louver closer to the vehicle center plane is an inner louver, and the other louver is an outer louver; the inner louver has an inclination angle with respect to the front-rear direction of the saddle riding type vehicle, The outer louvers have an inclination angle with respect to the front-rear direction, The inclination angle of the inner louvers is equal to or less than the inclination angle of the outer louvers. Saddle-type vehicle.

7. 7. The saddle-type vehicle according to claim 6, The inclination angle of the inner louvers is smaller than the inclination angle of the outer louvers. Saddle-type vehicle.

8. The saddle type vehicle according to claim 1, A louver located outward of the first louver in the width direction and closest to the first louver is defined as a second louver; the first louver has a front end and a rear end; the second louver has a front end and a rear end; A distance between the front end of the first louver and the front end of the second louver is equal to or greater than a distance between the rear end of the first louver and the rear end of the second louver. Saddle-type vehicle.

9. The saddle type vehicle according to claim 8, A distance in the width direction between the front end of the first louver and the front end of the second louver is equal to or greater than a distance in the width direction between the rear end of the first louver and the rear end of the second louver. Saddle-type vehicle.

10. The saddle type vehicle according to claim 9, The rear end of the first louver is disposed at the same position as the rear end of the second louver in the front-rear direction of the saddle riding type vehicle, or at a position forward of the rear end of the second louver. Saddle-type vehicle.

11. The saddle type vehicle according to claim 10, The rear end of the first louver is disposed in a position forward of the rear end of the second louver. Saddle-type vehicle.

12. The saddle type vehicle according to claim 8, A louver located outside the second louver in the width direction and closest to the second louver is a third louver, A first gap between the first louver and the second louver is equal to or larger than a second gap between the second louver and the third louver. Saddle-type vehicle.

13. The saddle type vehicle according to claim 12, the third louver has a front end; A distance between the front end of the first louver and the front end of the second louver is equal to or greater than a distance between the front end of the second louver and the front end of the third louver. Saddle-type vehicle.

14. The saddle type vehicle according to claim 13, A distance in the width direction between the front end of the first louver and the front end of the second louver is equal to or greater than a distance in the width direction between the front end of the second louver and the front end of the third louver. Saddle-type vehicle.

15. The saddle type vehicle according to claim 12, the third louver has a rear end, The rear end of the third louver is disposed at the same position as the rear end of the second louver in the front-rear direction of the saddle riding type vehicle. Saddle-type vehicle.

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