JP2008179336A - vehicle - Google Patents

Abstract

A vehicle capable of improving the cooling efficiency of a radiator is provided.
A motorcycle 1 (vehicle) includes an engine 10, a radiator 13b (13c) for cooling the engine 10, and an outer side extending from the front toward an outer surface 13l (13n) of the radiator 13b (13c). The wall 14a (15a) extends from the front toward the upper portion 13d (13f) of the radiator 13b (13c) and does not substantially have a gap between the vicinity of the upper portion 13d (13f) of the radiator 13b (13c). And an air guide device 14 (15) including an upper wall portion 14b (15b) disposed on the wall.
[Selection] Figure 4

Description

  The present invention relates to a vehicle, and more particularly to a vehicle provided with a radiator.

  2. Description of the Related Art Conventionally, a motorcycle (vehicle) including a radiator is known (see, for example, Patent Document 1). Patent Document 1 discloses a cooling device for a motorcycle including a radiator and a radiator shroud (wind guide device). In this motorcycle, the left and right side portions of the radiator shroud are configured to cover the left and right sides of the radiator with a predetermined interval. The upper portion of the radiator shroud is configured to be located in a region above the radiator at a predetermined interval from the upper surface of the radiator. That is, the upper portion of the radiator shroud is configured so as to be disposed in a state where a space is formed above the radiator.

Japanese Patent No. 3801254

  However, in the structure of Patent Document 1, the upper portion of the radiator shroud (air guide device) is disposed in a state where a space is formed above the radiator, so that air taken in from the front by the radiator shroud is located above the radiator. There is an inconvenience that it becomes easy to pass through the space. For this reason, since the air taken in from the front by the radiator shroud cannot be efficiently allowed to enter the core portion of the radiator, there is a problem that it is difficult to improve the cooling efficiency of the radiator.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a vehicle capable of improving the cooling efficiency of a radiator.

Means for Solving the Problems and Effects of the Invention

  A vehicle according to one aspect of the present invention is provided between an engine, one end and the other end separated in the vehicle width direction, and one end and the other end, and cools the engine. It is substantially between a radiator including a core portion through which water passes, an outer wall portion extending from the front toward one end portion of the radiator, and extending from the front toward the upper end portion of the radiator and near the upper end portion of the radiator. And an upper wall portion arranged so as not to have a gap.

  In the vehicle according to this aspect, as described above, between the outer wall portion extending from the front toward the one end portion of the radiator, and extending from the front toward the upper end portion of the radiator and between the vicinity of the upper end portion of the radiator. By providing an air guide device including an upper wall portion arranged so as not to have a substantial gap, at least air introduced by the air guide device from the front and guided toward the front portion of the radiator is provided. Since it can suppress passing between the upper wall part of the device and the upper end part of the radiator, more air can be obtained compared to the case where there is a gap between the upper wall part and the upper end part of the radiator. It can enter into the core part of the radiator. Thereby, the cooling efficiency of a radiator can be improved.

  In the vehicle according to the aforementioned aspect, the outer wall portion is preferably a side cover. If comprised in this way, since the increase in a number of parts can be suppressed compared with the case where a side cover is provided separately from an outer side wall part, a vehicle body can be reduced in weight.

  The vehicle including the side cover preferably further includes a front wheel and a front fork that supports the front wheel, and a front end portion of the side cover is formed to extend to the vicinity of the front fork. If comprised in this way, since the air with a large flow velocity which passes the outer side of a front fork and a flow is not inhibited by a front fork can be taken in into a wind guide device, the cooling efficiency of a radiator can be improved more. it can.

  In the vehicle including the side cover, preferably, the inner surface portion of the side cover and the upper wall portion of the wind guide device are arranged so as not to have a substantial gap. If comprised in this way, since it can suppress that the air guide | induced to the front part of the radiator taken in from the front by the side cover passes above a radiator, it will guide more air with a radiator Can do. As a result, the cooling efficiency of the radiator can be further improved.

  In the vehicle according to the above aspect, the vehicle preferably further includes a front wheel and a front fork that supports the front wheel, and the front end portion of the outer wall portion is positioned outside the outermost portion of the front fork when viewed from the front. Is provided. If comprised in this way, since the air with a large flow velocity which passes the outer side of a front fork and a flow is not inhibited by a front fork can be taken in into a wind guide device, the cooling efficiency of a radiator can be improved more. it can.

  In the vehicle according to the above aspect, the air guide device preferably further includes an inner wall portion extending from the front toward the other end portion of the radiator. If comprised in this way, the air taken in from the front by the inner wall part of the wind guide device and guided toward the front part of the radiator will pass through the central part of the vehicle body via the other end part of the radiator. Therefore, a large amount of air can be guided to the core portion of the radiator. Thereby, the cooling efficiency of a radiator can be improved.

  In the vehicle including the wind guide device including the inner wall portion, the lower portion of the region surrounded by the outer wall portion, the upper wall portion, and the inner wall portion of the wind guide device is preferably open. With this configuration, for example, when mud jumping from the front during traveling enters the area surrounded by the outer wall portion, the upper wall portion, and the inner wall portion of the wind guide device, mud etc. Since it can be discharged below the area surrounded by the wall, upper wall, and inner wall, mud etc. is prevented from accumulating in the area surrounded by the outer wall, upper wall, and inner wall. can do. This effect is particularly effective in off-road motorcycles because mud or the like is likely to enter the wind guide device.

  The vehicle according to the above aspect preferably further includes a plurality of blade-shaped mudguard members disposed in a region surrounded by the outer wall portion and the upper wall portion of the air guide device. If configured in this way, when mud or the like jumps from the front, mud or the like can be prevented from hitting the front part of the radiator, so that mud or the like can be prevented from adhering to the front part of the radiator. Can do. Thereby, it can suppress that the cooling efficiency of a radiator falls.

  In the vehicle including the mudguard member, the upper wall portion of the wind guide device and the mudguard member are preferably formed integrally. If comprised in this way, since a number of parts can be reduced compared with the case where the upper wall part and mudguard member of a wind guide apparatus are provided separately, a vehicle body can be reduced in weight. Moreover, the mechanical strength of the mudguard member can be further improved by integration with the upper wall portion.

  In the vehicle including the mudguard member, preferably, the outer wall portion of the wind guide device is a side cover, and the inner surface portion of the side cover and the outer edge portion of the outermost mudguard member have substantially no gap. Are arranged as follows. If comprised in this way, the air which was taken in from the front by the side cover and was guide | induced toward the front part of the radiator will be via a clearance gap between the inner surface part of a side cover, and the outer edge part of the outermost mudguard member. Since it can suppress passing outside, more air can be guided to the radiator. As a result, the cooling efficiency of the radiator can be further improved.

  In the vehicle including the mudguard member, the plurality of mudguard members are preferably arranged so that the front portion of the radiator cannot be seen when viewed from the front. If comprised in this way, when mud etc. jump from the front, it can suppress that mud etc. hit the front part of a radiator easily.

  The vehicle including the mudguard member preferably further includes an inner wall portion extending from the front toward the other end of the radiator, the mudguard member has a wind guide function, and the mudguard member is a front portion of the mudguard member. A front air guide part formed so as to extend along the direction in which the outer wall part extends in plan view, and provided so as to protrude to the inner wall part side behind the front air guide part. And a rear air guide portion formed so as to be invisible from the front portion of the radiator when viewed from the front and continuous with the front air guide portion. If comprised in this way, air can be smoothly guide | induced back along an outer side wall part by the front part wind guide part formed so that it may extend along the direction where an outer side wall part extends. Further, by providing the mudguard member with a rear air guide part formed so as to prevent the front part of the radiator from being seen from the front and to be continuous with the front air guide part, mud or the like can be seen from the front. In the case of jumping, mud etc. can be more easily prevented from hitting the front part of the radiator.

  In this case, preferably, the vicinity of the rear end portion of the rear air guide portion of the mudguard member is provided so as to extend in a substantially vertical direction with respect to the front surface portion of the radiator in plan view. If comprised in this way, since the direction which the air guide | induced by the front wind guide part and the rear wind guide part flows can be made substantially perpendicular | vertical with respect to the front part of a radiator, it is in the core part of a radiator. Incoming air can be efficiently passed rearward. Thereby, the cooling efficiency of a radiator can be improved more.

  In the vehicle including the mudguard member, preferably, the plurality of mudguard members are arranged near the lower portion of the front portion of the radiator and are connected by a mudguard plate having a mudguard function. If comprised in this way, when mud etc. jumps from the downward direction, it can suppress that mud etc. hit the front part of a radiator easily with a mudguard board.

  In the vehicle including the wind guide device including the inner wall portion, preferably, between the rear end portion of the outer wall portion of the wind guide device and one end portion of the radiator, and the rear end of the upper wall portion of the wind guide device. A seal member is disposed between at least one of the first portion and the upper end portion of the radiator and between the rear end portion of the inner wall portion of the air guide device and the other end surface of the radiator. If comprised in this way, it can suppress easily that a clearance gap is formed between an air guide apparatus and a radiator.

  In the vehicle including the wind guide device including the inner wall portion, the outer wall portion, the upper wall portion, and the inner wall portion are preferably integrally formed. If comprised in this way, since it can suppress that a clearance gap is formed between an outer wall part and an upper wall part, and between an upper wall part and an inner wall part, an outer wall part and upper part It is possible to suppress the passage of air between the wall portions and between the upper wall portion and the inner wall portion. Thereby, more air can be made to approach the core part of a radiator.

  In the vehicle including the wind guide device including the inner wall portion, the front end portion of the outer wall portion is preferably configured to be positioned forward of the front end portion of the inner wall portion. If comprised in this way, air with a large flow velocity which is not obstruct | occluded by a front fork etc. can be taken in into a wind guide apparatus more.

  In the vehicle according to the above aspect, the outer wall portion is preferably formed in a flat surface shape. If comprised in this way, since air can be guide | induced linearly along an outer side wall part, it can suppress that the flow velocity of air becomes small.

  In the vehicle according to the above aspect, the air guide device is preferably fixed to the radiator. If comprised in this way, while forming an outer wall part so that it may extend toward one side edge part, an upper wall part can be formed so that it may extend toward an upper end part.

  In the vehicle according to the above aspect, it is preferable that the vehicle further includes a side cover arranged to cover at least a part of the side of the outer wall portion, and the outermost portion of the outer wall portion is the side cover as viewed from the front. It is arranged at the same position as the outermost part in the width direction or at the inner side of the outermost part of the side cover. If comprised in this way, when a wind guide apparatus is provided, it can suppress that a vehicle width becomes large.

  The vehicle according to the one aspect described above preferably further includes a side cover disposed so as to cover at least a part of the side of the outer wall portion, and the front end portion of the outer wall portion is more than the front end portion of the side cover. It arrange | positions so that it may extend ahead. If comprised in this way, air flow apparatus with a large flow velocity which is not obstruct | occluded by a front fork etc. will increase more by the front-end part of the outer wall part arrange | positioned so that it may extend ahead rather than the front-end part of a side cover Can be imported.

  The vehicle according to the one aspect includes an off-road motorcycle. By applying the vehicle according to any one of the above configurations to an off-road motorcycle, an off-road motorcycle capable of improving the cooling efficiency of the radiator can be easily obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a side view showing the overall structure of a motorcycle according to a first embodiment of the present invention. 2 to 9 are views for explaining in detail the structure around the radiator of the motorcycle according to the first embodiment shown in FIG. In the first embodiment, an off-road motorcycle will be described as an example of the vehicle of the present invention. In the figure, the arrow FWD direction indicates the front in the traveling direction of the motorcycle. First, with reference to FIGS. 1-9, the structure of the motorcycle 1 by 1st Embodiment is demonstrated in detail.

  In the motorcycle 1 according to the first embodiment of the present invention, as shown in FIG. 1, a main frame 3 extending in the front-rear direction is disposed behind the head pipe 2. The main frame 3 includes an upper frame portion 3a extending rearward from above and a lower frame portion 3b extending rearward from the lower side. Further, a backstay 4 is connected between the upper frame portion 3a and a rear end portion of a seat rail (not shown). The head pipe 2, the main frame 3, the seat rail (not shown), and the back stay 4 constitute a vehicle body frame.

  A pair of front forks 5 having suspensions for absorbing vertical impacts are disposed below the head pipe 2. A front wheel 6 is rotatably attached to the lower ends of the pair of front forks 5. A front fender 7 is disposed above the front wheel 6. Further, a bib plate 8 that covers the front of the head pipe 2 is provided in front of the head pipe 2. The bib plate 8 is provided so as not to block the flow of air flowing into the air guide devices 14 and 15 described later. A handle 9 is rotatably attached to the upper part of the head pipe 2.

  An engine 10 is attached below the upper frame portion 3 a of the main frame 3. The engine 10 includes a cylinder part 10a, a cylinder head part 10b, a cylinder head cover part 10c, and a crankcase 10d. An exhaust pipe 11 is attached to the engine 10. The exhaust pipe 11 is directed rearward and connected to the muffler 12.

  Further, as shown in FIG. 2, a radiator 13 for cooling the engine 10 is disposed behind the head pipe 2. As shown in FIG. 3, the radiator 13 is provided with a core portion 13a having a function of passing air in the direction of arrow P (rearward) and circulating cooling water. That is, the radiator 13 cools the cooling water by the core portion 13a. Further, the cooling water cooled by the radiator 13 is distributed to the engine 10 and has a function of cooling the engine 10.

  The radiator 13 includes a radiator 13b and a radiator 13c. The radiator 13b and the radiator 13c are disposed so as to sandwich the main frame 3 from the left and right sides (arrow A direction side and arrow B direction side). Further, as shown in FIG. 4, a portion on the inner surface 13e side of the upper portion 13d of the radiator 13b and a portion on the inner surface 13g side of the upper portion 13f of the radiator 13c are connected by a connection pipe 13h. The upper portions 13d and 13f are examples of the “upper end portion” of the present invention, and the inner side surfaces 13e and 13g are examples of the “other end portion” of the present invention. Further, a connection pipe 13k connects a portion on the inner side surface 13e side of the lower portion 13i of the radiator 13b and a portion on the inner side surface 13g side of the lower portion 13j of the radiator 13c. The connection pipe 13h and the connection pipe 13k have a function of circulating the cooling water from the radiator 13b to the radiator 13c. As shown in FIGS. 2 and 3, an inflow pipe 13m connected to the cylinder portion 10a of the engine 10 (see FIG. 2) is provided on the outer surface 13l side of the upper portion 13d of the radiator 13b. Yes. Further, a discharge pipe connected to the crankcase 10d (see FIG. 2) of the engine 10 is disposed on the outer surface 13n (see FIG. 3) side of the lower portion 13j (see FIG. 4) of the radiator 13c (see FIG. 3). 13o is provided. The outer surfaces 13l and 13n are examples of the “one side end” of the present invention. Further, as shown in FIG. 3, the core portion 13a of the radiator 13b is provided between an inner side surface 13e and an outer side surface 13l separated in the vehicle width direction (arrow A direction and arrow B direction), and the radiator 13c. The core portion 13a is provided between an inner side surface 13g and an outer side surface 13n that are separated in the vehicle width direction (arrow A direction and arrow B direction).

  Further, as shown in FIGS. 3 and 4, two stays 13p are provided on the outer surface 13l of the radiator 13b and the outer surface 13n of the radiator 13c so as to protrude forward from the radiator 13, respectively. . Each stay 13p is provided with a screw insertion hole 13q. A stay 13r is provided on the inner side surface 13e of the radiator 13b and the inner side surface 13g of the radiator 13c so as to protrude forward of the radiator 13, respectively. Each stay 13r is provided with two boss insertion holes 13s. Further, the screw insertion hole 13q and the boss insertion hole 13s are provided for fixing the air guide device 14 and the air guide device 15 described later to the radiator 13.

  Here, in the first embodiment, as shown in FIG. 4, resin air guide devices 14 and 15 are attached to the radiator 13. Specifically, the air guide device 14 is fixed to the radiator 13b, and the air guide device 15 is fixed to the radiator 13c. As shown in FIG. 5, the air guide device 14 includes an outer wall portion 14a, an upper wall portion 14b, and an inner wall portion 14c, and the outer wall portion 14a, the upper wall portion 14b, and the inner wall portion. 14c is integrally formed. Specifically, there is no gap between the outer wall portion 14a and the upper wall portion 14b and between the upper wall portion 14b and the inner wall portion 14c.

  In the first embodiment, the lower portion of the region surrounded by the outer wall portion 14a, the upper wall portion 14b, and the inner wall portion 14c of the air guide device 14 is open. That is, the air guide device 14 has an opening 14d. Due to the opening 14d, mud or the like that jumps from the front during traveling enters the region surrounded by the outer wall 14a, the upper wall 14b, and the inner wall 14c of the air guide device 14, and mud is removed. Since it can be discharged below the area surrounded by the outer wall part 14a, the upper wall part 14b, and the inner wall part 14c, mud is formed in the area surrounded by the outer wall part 14a, the upper wall part 14b, and the inner wall part 14c. It is possible to suppress the accumulation of etc.

  In the first embodiment, the front end portion 14e of the outer wall portion 14a is positioned in front of the front end portion 14f of the inner wall portion 14c as shown in FIGS. 4 and 6, and the front side (the arrow FWD direction side). ) As viewed from the outermost side 5a (see FIG. 4) of the front fork 5 (arrow B direction side). That is, the air guide device 14 can take in the air guide device 14 with a high flow velocity passing through the arrow B direction side where the air flow is not obstructed by the front fork 5, so that the cooling efficiency of the radiator 13b is improved. It is comprised so that it can be made. Further, as shown in FIG. 3, the air guide device 14 is formed such that the outer wall portion 14a and the inner wall portion 14c are widened toward the radiator 13b. Thereby, it becomes possible to guide the air that has flowed into the air guide device 14 to the entire core portion 13a of the radiator 13b.

  Further, in the first embodiment, as shown in FIG. 3, the outer wall portion 14a is formed in a flat surface shape so as to extend from the traveling direction (arrow FWD direction) side toward the outer surface 13l of the radiator 13b. Has been. Further, as shown in FIG. 5, two screw insertion holes 14g are provided in the rear portion of the outer wall portion 14a. As shown in FIGS. 3 and 4, the screw insertion holes 14g are respectively attached to two screw insertion holes 13q (see FIG. 3) of the radiator 13b by bolts 100 and nuts 101. Further, as shown in FIGS. 2 and 3, a sponge sealing member 16a is disposed between the front portion of the outer surface 13l of the radiator 13b and the rear end portion 14h of the outer wall portion 14a. The seal member 16a is bonded to the entire surface of the rear end portion 14h of the outer wall portion 14a and is formed to have a predetermined thickness. Further, the sealing member 16a has a function of suppressing the formation of a gap between the front portion of the outer surface 13l of the radiator 13b and the rear end portion 14h of the outer wall portion 14a. In other words, the outer wall portion 14a is arranged so as not to have a substantial gap between the outer wall surface 13l of the radiator 13b.

  In the first embodiment, as shown in FIGS. 2 and 4, the upper wall portion 14b is formed so as to extend from the traveling direction (arrow FWD direction) side toward the upper portion 13d of the radiator 13b. As shown in FIG. 2, a sponge sealing member 16b is disposed between the upper portion 13d of the radiator 13b and the rear end portion 14i of the upper wall portion 14b. Specifically, the seal member 16b is bonded to the entire surface of the rear end portion 14i of the upper wall portion 14b and is formed to have a predetermined thickness. Further, the sealing member 16b has a function of suppressing the formation of a gap between the upper portion 13d of the radiator 13b and the rear end portion 14i of the upper wall portion 14b. That is, the upper wall portion 14b is disposed so as not to have a substantial gap between the upper wall portion 14b and the upper portion 13d of the radiator 13b.

  In the first embodiment, as shown in FIG. 3, the inner wall portion 14c is formed so as to extend while curving in the arrow A direction from the traveling direction (arrow FWD direction) side toward the inner surface 13e of the radiator 13b. Has been. That is, the inner wall portion 14c is formed so that the front fork 5 and the front fender 7 do not contact the inner wall portion 14c when the handle 9 is cut in the direction of arrow A. Further, a flat plate-like surface portion 14j is formed integrally with the inner wall portion 14c at the rear portion of the inner wall portion 14c. The flat surface portion 14j is configured to correspond to the stay 13r of the radiator 13b. Further, as shown in FIG. 3 and FIG. 5, two boss portions 14k are integrally provided on the surface portion 14j on the surface portion 14j, and the two boss portions 14k are respectively stays 13r (see FIG. 3). Are inserted into two boss insertion holes 13s (see FIG. 3). Further, as shown in FIG. 3, a sponge sealing member 16c is disposed between the front portion of the inner side surface 13e of the radiator 13b and the rear end portion 141 of the inner wall portion 14c. Specifically, the seal member 16c is bonded to the rear end portion 14l of the inner wall portion 14c so as to avoid the flat surface portion 14j and to extend in the vertical direction. Further, the seal member 16c is formed to have a predetermined thickness and suppresses formation of a gap between the front side portion of the inner side surface 13e of the radiator 13b and the rear end portion 14l of the inner side wall portion 14c. Has the function of That is, the inner side wall part 14c is arrange | positioned so that it may not have a clearance gap between the inner side surface 13e of the radiator 13b.

  The air guide device 15 is fixed to the radiator 13c in the same manner as the air guide device 14 is fixed to the radiator 13b. That is, the air guide device 15 is formed to have a shape that is symmetrical to the air guide device 14 with respect to the vehicle center when viewed from the front side of the vehicle.

  Specifically, in the first embodiment, as shown in FIG. 7, the air guide device 15 includes an outer wall portion 15a, an upper wall portion 15b, and an inner wall portion 15c, and the outer wall portion 15a, The upper wall portion 15b and the inner wall portion 15c are integrally formed. That is, there is no gap between the outer wall portion 15a and the upper wall portion 15b and between the upper wall portion 15b and the inner wall portion 15c.

  In the first embodiment, the lower portion of the region surrounded by the outer wall portion 15a, the upper wall portion 15b, and the inner wall portion 15c of the air guide device 15 is open. That is, the air guide device 15 has an opening 15d. When the mud etc. that jumps from the front during traveling enters the region surrounded by the outer wall 15a, the upper wall 15b, and the inner wall 15c of the wind guide device 15 by this opening 15d, mud etc. Since it can be discharged below the area surrounded by the outer wall part 15a, the upper wall part 15b and the inner wall part 15c, mud is formed in the area surrounded by the outer wall part 15a, the upper wall part 15b and the inner wall part 15c. It is possible to suppress the accumulation of etc.

  In the first embodiment, the front end portion 15e of the outer wall portion 15a is positioned in front of the front end portion 15f of the inner wall portion 15c as shown in FIGS. 4 and 8, and the front side (the arrow FWD direction side). ) And the outermost portion 5b of the front fork 5 (see FIG. 4). That is, since the air guide device 15 can take in the air guide device 15 with a large flow velocity passing through the arrow A direction side where the air flow is not obstructed by the front fork 5, the cooling efficiency of the radiator 13c is improved. It is comprised so that it can be made. Further, as shown in FIG. 3, the air guide device 15 is formed such that the outer wall portion 15a and the inner wall portion 15c are widened toward the radiator 13c. Thereby, it is possible to guide the air that has flowed into the air guide device 15 to the entire core portion 13a of the radiator 13c.

  In the first embodiment, as shown in FIG. 3, the outer wall portion 15a is formed in a flat surface shape so as to extend from the traveling direction (arrow FWD direction) side toward the outer surface 13n of the radiator 13c. Has been. Further, as shown in FIG. 7, two screw insertion holes 15g are provided in the rear portion of the outer wall portion 15a. As shown in FIGS. 3 and 4, the screw insertion holes 15g are respectively attached to two screw insertion holes 13q (see FIG. 3) of the radiator 13c by bolts 100 and nuts 101. Further, as shown in FIGS. 3 and 9, a sponge seal member 16d is disposed between the front portion of the outer surface 13n of the radiator 13c and the rear end portion 15h of the upper wall portion 15b. Specifically, the seal member 16d is bonded to the entire surface of the rear end portion 15h of the outer wall portion 15a and is formed to have a predetermined thickness. Further, the seal member 16d has a function of suppressing the formation of a gap between the front portion of the outer surface 13n of the radiator 13c and the rear end portion 15h of the outer wall portion 15a. That is, the outer wall portion 15a is disposed so as not to have a gap substantially between the outer surface 13n of the radiator 13c.

  In the first embodiment, as shown in FIGS. 4 and 9, the upper wall portion 15b is formed so as to extend from the traveling direction (arrow FWD direction) side toward the upper portion 13f of the radiator 13c. Further, as shown in FIG. 9, a sponge seal member 16e is disposed between the upper portion 13f of the radiator 13c and the rear end portion 15i of the upper wall portion 15b. Specifically, the seal member 16e is bonded to the entire surface of the rear end portion 15i of the upper wall portion 15b and is formed to have a predetermined thickness. Further, the sealing member 16e has a function of suppressing the formation of a gap between the upper portion 13f of the radiator 13c and the rear end portion 15i of the upper wall portion 15b. That is, the upper wall portion 15b is arranged so as not to have a substantial gap between the upper wall portion 15b and the upper portion 13f of the radiator 13c.

  In the first embodiment, as shown in FIG. 3, the inner wall portion 15c is formed so as to extend while curving in the arrow B direction from the traveling direction (arrow FWD direction) side toward the inner side surface 13g of the radiator 13c. Has been. That is, the inner wall portion 15c is formed so that the front fork 5 and the front fender 7 do not contact the inner wall portion 15c when the handle 9 is cut in the direction of arrow B. Further, a flat plate-like surface portion 15j is integrally formed with the inner wall portion 15c at the rear portion of the inner wall portion 15c. The flat surface portion 15j is configured to correspond to the stay 13r of the radiator 13c. Further, as shown in FIGS. 3 and 7, two boss portions 15k are integrally provided on the surface portion 15j on the surface portion 15j, and the two boss portions 15k are respectively provided with stays 13r (see FIG. 3) of the radiator 13c. 3) is inserted into two boss insertion holes 13s (see FIG. 3). Further, as shown in FIG. 3, a sponge sealing member 16f is disposed between the front portion of the inner side surface 13g of the radiator 13c and the rear end portion 15l of the inner side wall portion 15c. Specifically, the seal member 16f is bonded to the rear end portion 15l of the inner wall portion 15c so as to avoid the flat plate-like surface portion 15j and to extend in the vertical direction. Further, the seal member 16f is formed to have a predetermined thickness and suppresses the formation of a gap between the front side portion of the inner side surface 13g of the radiator 13c and the rear end portion 15l of the inner side wall portion 15c. It has the function to do. That is, the inner wall portion 15c is disposed so as not to have a substantial gap between the inner wall portion 15c and the inner surface 13g of the radiator 13c.

  In the first embodiment, a plurality of slat-shaped mudguard members 17 are provided in a region surrounded by the outer wall portion 14a, the upper wall portion 14b, and the inner wall portion 14c of the air guide device 14, and the air guide device 14 is guided. A plurality of blade-shaped mudguard members 18 are provided in a region surrounded by the outer wall 15a, the upper wall 15b, and the inner wall 15c of the wind device 15. These mudguard members 17 and 18 have a function of suppressing mud and the like jumping from the front from hitting the radiator 13, and also have a function of guiding air to the radiator 13.

  In the first embodiment, a mudguard 19 is provided near the lower portion 13i (see FIG. 4) of the front surface portion 13t (see FIG. 3) of the radiator 13b of the air guide device 14, as shown in FIGS. Has been placed. Further, the mudguard plate 19 has a function of preventing mud and the like jumping from below the motorcycle 1 from hitting the front surface portion 13t of the radiator 13b. Moreover, the mudguard plate 17 connects a plurality of mudguard members 17 as shown in FIG. Specifically, the mudguard plate 19 is provided integrally with the plurality of mudguard members 17, and the upper surface portion 19 a of the mudguard plate 19 connects the lower portions 17 a of the mudguard members 17. As shown in FIG. 6, one end 19b of the mudguard 19 is connected to the lower part of the inner surface 14m near the rear end 14l of the inner wall 14c. Further, as shown in FIG. 5, the upper portions 17b of the plurality of mudguard members 17 are respectively connected to the inner surface 14n in the vicinity of the rear end portion 14i of the upper wall portion 14b.

  In the first embodiment, as shown in FIG. 4, the plurality of mudguard members 17 are arranged so that the front surface portion 13 t (see FIG. 3) of the radiator 13 b is not visible when viewed from the front (arrow FWD direction). Yes. Specifically, the plurality of mudguard members 17 are attached to the air guide device 14 in a state having a predetermined angle with respect to the traveling direction (arrow FWD direction). Further, as shown in FIG. 6, the mudguard member 17 has a substantially S-shaped cross-sectional shape, and a front air guide part 17c provided at the front part of the mudguard member 17 and a rear part of the front air guide part 17c. And a rear wind guide portion 17d formed so as to be continuous with the front wind guide portion 17c. The front air guide portion 17c is formed so as to extend in a direction along the direction (arrow C direction) in which the outer wall portion 14a extends linearly when seen in a plan view, and the air flows along the outer wall portion 14a. It has a function to guide it smoothly backwards. The rear air guide portion 17d is provided behind the front air guide portion 17c so as to protrude toward the inner wall portion 14c (arrow B direction side), and is viewed from the front (arrow FWD direction) as a radiator 13b (see FIG. 3) is formed so that the front surface portion 13t (see FIG. 3) cannot be seen. Further, the rear air guide portion 17d is integrally formed so as to be continuous with the front air guide portion 17c. Further, the vicinity of the rear end portion 17e of the rear air guide portion 17d is substantially perpendicular to the front surface portion 13t (see FIG. 3) of the radiator 13b (see FIG. 3) in plan view (in the arrow FWD direction). It is formed to extend, and has a function of making the air flow direction substantially perpendicular to the front surface portion 13t (see FIG. 3) of the radiator 13b (see FIG. 3). As a result, the air entering the core portion 13a (see FIG. 3) of the radiator 13b (see FIG. 3) can be efficiently passed rearward, so that the cooling efficiency of the radiator 13b (see FIG. 3) is improved. It becomes possible to improve.

  In the first embodiment, the mudguard member 18 is provided in the wind guide device 15 in the same manner as the mudguard member 17 is provided in the wind guide device 14. As shown in FIGS. 3 and 4, a mudguard plate 20 is disposed in the vicinity of the lower portion 13 j (see FIG. 4) of the front surface portion 13 u (see FIG. 3) of the radiator 13 c of the air guide device 15. Further, the mudguard plate 20 has a function of suppressing mud jumping from below the motorcycle 1 from hitting the front surface portion 13u of the radiator 13c. Further, the mudguard plate 20 connects a plurality of mudguard members 18 as shown in FIG. Specifically, the mudguard plate 20 is provided integrally with the plurality of mudguard members 18, and the upper surface portion 20 a of the mudguard plate 20 connects the lower portions 18 a of the mudguard members 17. Further, as shown in FIG. 8, one end 20b of the mudguard plate 20 is connected to the lower part of the inner surface 15m in the vicinity of the rear end 15l of the inner wall 15c. Further, as shown in FIG. 7, the upper portions 18b of the plurality of mudguard members 18 are connected to the inner surface 15n in the vicinity of the rear end portion 15i of the upper wall portion 15b.

  In the first embodiment, as shown in FIG. 4, the plurality of mudguard members 18 are arranged such that the front surface portion 13 u (see FIG. 3) of the radiator 13 c is not visible when viewed from the front (arrow FWD direction). Yes. Specifically, the plurality of mudguard members 18 are attached to the wind guide device 15 in a state having a predetermined angle with respect to the traveling direction (arrow FWD direction). Further, as shown in FIG. 8, the mudguard member 18 has a substantially S-shaped cross-sectional shape, and a front air guide portion 18 c provided at the front portion of the mudguard member 18 and a rear side of the front air guide portion 18 c. And a rear air guide portion 18d formed so as to be continuous with the front air guide portion 18c. The front air guide portion 18c is formed so as to extend in a direction along the direction (arrow D direction) in which the outer wall portion 15a extends linearly when seen in a plan view, and the air flows along the outer wall portion 15a. It has a function to guide it smoothly backwards. The rear air guide portion 18d is provided behind the front air guide portion 18c so as to protrude toward the inner wall portion 15c (arrow A direction side), and is viewed from the front (arrow FWD direction) as a radiator 13c (see FIG. 3) is formed so that the front surface portion 13u (see FIG. 3) cannot be seen. Further, the rear air guide portion 18d is integrally formed so as to be continuous with the front air guide portion 18c. Further, the vicinity of the rear end portion 18e of the rear air guide portion 18d is substantially perpendicular to the front surface portion 13u (see FIG. 3) of the radiator 13c (see FIG. 3) in plan view (in the arrow FWD direction). It is formed to extend, and has a function of making the air flow direction substantially perpendicular to the front surface portion 13u (see FIG. 3) of the radiator 13c (see FIG. 3). As a result, the air entering the core portion 13a (see FIG. 3) of the radiator 13c (see FIG. 3) can be efficiently passed rearward, so that the cooling efficiency of the radiator 13c (see FIG. 3) can be improved. It becomes possible to improve.

  Moreover, in 1st Embodiment, as shown in FIG.1 and FIG.3, in the side (arrow B direction) of the outer side wall part 14a, the center part and rear of the side (arrow B direction) of the outer side wall part 14a are arranged. A side cover 21 is arranged so as to cover the part. The side cover 21 is fixed to the main frame 3 with screws (not shown). Moreover, the outermost end part 14o of the outer side wall part 14a is arrange | positioned inside the outermost part 21a of the width direction (arrow A direction and arrow B direction) of the side cover 21, as shown in FIG. The outermost end portion 14o is an example of the “outermost portion of the outer wall portion” in the present invention. Further, the front end portion 14e of the outer wall portion 14a is disposed so as to extend forward (in the arrow FWD direction) with respect to the front end portion 21b of the side cover 21. Thereby, it becomes possible to take in more air into the air guide device 14 with a large flow velocity that is not hindered by the front fork 5 or the like flowing in the vicinity of the outer wall portion 14a.

  Further, in the first embodiment, as shown in FIGS. 1 and 3, the side portion of the outer wall portion 15a (in the direction of arrow A) is located on the side portion of the outer wall portion 15a (in the direction of arrow A) and the rear portion. A side cover 22 is arranged so as to cover the part. The side cover 22 is fixed to the main frame 3 with screws (not shown). Further, as shown in FIG. 3, the outermost end 15 o of the outer wall portion 15 a is disposed on the inner side of the outermost portion 22 a in the width direction (arrow A direction and arrow B direction) of the side cover 22. The outermost end 15o is an example of the “outermost part of the outer wall” in the present invention. Further, the front end portion 15e of the outer wall portion 15a is disposed so as to extend forward (in the arrow FWD direction) with respect to the front end portion 22b of the side cover 22. Thereby, it becomes possible to take in more air into the air guide device 15 with a high flow velocity that is not hindered by the front fork 5 or the like flowing in the vicinity of the outer wall portion 15a.

  Further, as shown in FIG. 1, the upper frame portion 3a is provided with a pivot shaft 3c. The pivot shaft 3c supports the front end portion of the rear arm 23 so that it can swing up and down. A rear wheel 24 is rotatably attached to the rear end portion of the rear arm 23. That is, the rear wheel 24 is attached to the main frame 3 via the rear arm 23.

  FIGS. 10 and 11 are plan views showing the flow of air guided to the radiator of the motorcycle according to the first embodiment shown in FIG. Next, referring to FIGS. 1, 2, and 9 to 11, when the motorcycle 1 is traveling in the direction of arrow FWD, it is guided to the radiator 13 via the wind guide device 14 and the wind guide device 15. A description will be given of the flow of air.

  First, the flow of air guided to the radiator 13b through the air guide device 14 will be described. As shown in FIG. 10, when the motorcycle 1 (see FIG. 1) travels in the direction of arrow FWD, air having a large flow velocity flows in the direction of arrow E to the side of the outermost part 5a of the front fork 5. Next, the air that has flowed in the direction of arrow E strikes the vicinity of the front end portion 14e of the outer wall portion 14a and enters the inside of the air guide device 14. At this time, the air flowing in the direction of arrow E flows in the direction of arrow F along the shape of the air guide device 14.

  Thereafter, the air flowing in the direction of the arrow F enters the mudguard member 17 from the front air guide portion 17c and flows in the direction of the arrow G along the rear air guide portion 17d. At this time, since the front air guide portion 17c is formed in a direction along the direction in which the outer wall portion 14a extends, the air flowing along the outer wall portion 14a smoothly enters the mudguard member 17. Is possible. Further, the vicinity of the rear end portion 17e of the rear air guide portion 17d formed continuously with the front air guide portion 17c is formed substantially perpendicular to the front surface portion 13t of the radiator 13b. The air flowing in the G direction can be substantially perpendicular to the front surface portion 13t of the radiator 13b. As a result, the air flowing in one direction of the arrow G entering the core portion 13a of the radiator 13b can be efficiently passed rearward (one direction of the arrow P), so that the cooling efficiency of the radiator 13b is improved. Is possible.

  Thereafter, the air that has passed through the core portion 13a of the radiator 13b in the direction of the arrow P flows backward (in the direction of the arrow H) of the motorcycle 1.

  Next, the flow of air guided to the radiator 13c through the air guide device 15 will be described. As shown in FIG. 11, when the motorcycle 1 (see FIG. 1) travels in the direction of the arrow FWD, air having a high flow velocity flows in the direction of the arrow E <b> 2 to the side of the outermost part 5 b of the front fork 5. Next, the air that has flowed in the direction of the arrow E <b> 2 strikes the vicinity of the front end portion 15 e of the outer wall portion 15 a and enters the inside of the air guide device 15. At this time, the air that flows in the direction of the arrow E2 flows in the direction of the arrow F2 along the shape of the air guide device 15.

  Thereafter, the air that flows in the direction of the arrow F2 enters the mudguard member 18 from the front air guide portion 18c and flows in the direction of the arrow G2 along the rear air guide portion 18d. At this time, since the front air guide portion 18c is formed in a direction along the direction in which the outer wall portion 15a extends, the air flowing along the outer wall portion 15a smoothly enters the mudguard member 18. Is possible. Further, the vicinity of the rear end portion 18e of the rear air guide portion 18d formed continuously with the front air guide portion 18c is formed substantially perpendicular to the front surface portion 13u of the radiator 13c. The air flowing in the G2 direction can be substantially perpendicular to the front surface portion 13u of the radiator 13c. As a result, the air flowing in the direction of arrow G2 entering the core portion 13a of the radiator 13c can be efficiently passed rearward (in the direction of arrow P2), so that the cooling efficiency of the radiator 13c can be improved. It becomes.

  Thereafter, the air that has passed through the core portion 13a of the radiator 13c in the direction of the arrow P2 flows backward (in the direction of the arrow H2) of the motorcycle 1.

  In the first embodiment, as described above, the outer wall portion 14a (15a) extending from the front toward the outer surface 13l (13n) of the radiator 13b (13c), and the upper portion 13d (13f) of the radiator 13b (13c) from the front. ) And an upper wall portion 14b (15b) disposed via a seal member 16b (16e) so as not to have a gap substantially between the upper portion of the radiator 13b (13c) and the front side. By providing the air guide device 14 (15) including the inner wall portion 14c (15c) extending toward the inner side surface 13e (13g) of the radiator 13b (13c), the air guide device 14 (15) is taken in from the front. The air guided toward the front surface portion 13t (13u) of the radiator 13b (13c) is at least the upper wall portion 1 of the air guide device 14 (15). Since it can suppress passing between b (15b) and the upper part 13d (13f) of the radiator 13b (13c), the upper wall part 14b (15b) and the upper part 13d (13f) of the radiator 13b (13c) More air can be made to enter the core portion 13a of the radiator 13b (13c) than in the case where there is a gap between them. Thereby, the cooling efficiency of the radiator 13b (13c) can be improved.

  In the first embodiment, the lower portion of the region surrounded by the outer wall portion 14a (15a), the upper wall portion 14b (15b), and the inner wall portion 14c (15c) of the air guide device 14 (15) is opened. By providing the opening 14d (15d), mud or the like that jumps from the front during traveling causes the outer wall 14a (15a), the upper wall 14b (15b), and the inner wall of the air guide device 14 (15). 14c (15c), the lower part of the region surrounded by the outer wall portion 14a (15a), the upper wall portion 14b (15b) and the inner wall portion 14c (15c) Since it is open | released, it can suppress that a mud etc. accumulate in the area | region enclosed by the outer side wall part 14a (15a), the upper wall part 14b (15b), and the inner side wall part 14c (15c). In particular, in the off-road motorcycle 1, this effect is effective because mud or the like is likely to enter the wind guide device 14 (15).

  In the first embodiment, a plurality of slat shapes are formed in a region surrounded by the outer wall 14a (15a), the upper wall 14b (15b), and the inner wall 14c (15c) of the air guide device 14 (15). By providing the mudguard member 17 (18), it is possible to prevent the mud from hitting the front surface portion 13t (13u) of the radiator 13b (13c) when the mud jumps from the front. Can be prevented from adhering to the front surface portion 13t (13u) of the radiator 13b (13c). Thereby, it can suppress that the cooling efficiency of the radiator 13b (13c) falls.

  In the first embodiment, the plurality of mudguard members 17 (18) are arranged near the lower portion of the front surface portion 13t (13u) of the radiator 13b (13c) and connected by a mudguard plate 19 (20) having a mudguard function. Thus, when mud or the like jumps from below, the mudguard plate 19 (20) can easily prevent the mud or the like from hitting the front surface portion 13t (13u) of the radiator 13b (13c).

(Second Embodiment)
FIGS. 12 to 23 are views for explaining in detail the structure of the motorcycle according to the second embodiment of the present invention. With reference to FIGS. 12 to 23, in the second embodiment, unlike the first embodiment, a case will be described in which the outer wall portions of the air guide devices 150 and 160 include side covers 121 and 122, respectively.

  In the second embodiment, as shown in FIGS. 12 and 13, resin-made air guide devices 150 and 160 are attached to the pair of radiators 13, respectively. The air guide devices 150 and 160 have a symmetrical shape with respect to the vehicle center when viewed from the front side of the vehicle. First, the right air guide device 150 as viewed from the front side of the vehicle will be described.

  Here, in 2nd Embodiment, as shown in FIGS. 12-16, the wind guide apparatus 150 is comprised by the outer side wall part which consists of the side cover 121, and the upper wall part 114. As shown in FIG. The side cover 121 that constitutes the outer wall portion of the air guide device 150 includes a screw insertion portion 121a that protrudes inward. By inserting the screw 200 into the screw insertion portion 121a and screwing it into the nut 201 embedded in the nut embedding portion 117a (see FIG. 15) included in the outermost mudguard member 117 described later, the side cover 121 is It is fixed to the mudguard member 117.

  Moreover, as shown in FIGS. 12-14 and FIG. 16, the shape of the side cover 121 which comprises the outer side wall part of the wind guide apparatus 150 is formed so that it may spread in the vehicle width direction outer side. Two openings 121 b are provided on the side surface of the side cover 121. Furthermore, as shown in FIG. 13, the lower end 121 c of the side cover 121 is formed so as to extend below the lower end of the mudguard member 117.

  As shown in FIGS. 12 and 14, the front end 121 d of the side cover 121 is formed to extend to the outside in the vicinity of the front fork 5. That is, the side cover 121 is configured to be able to guide air having a high flow rate passing through the arrow B direction side (outside) of the front fork 5 where the air flow is not inhibited by the front fork 5 toward the mudguard member 117. Has been.

  In the second embodiment, as shown in FIGS. 13, 14, and 16, the mudguard member 117 is fixed to the inner side surface 13 e of the radiator 13. Specifically, the mudguard member 117 includes two boss portions 117b in the innermost part, and is configured to be connected to the two boss insertion holes 13s on the radiator inner side surface 13e. Further, as shown in FIG. 15, the plurality of mudguard members 117 are fixed by being connected by a connecting member 117c. The mudguard member 117 has a function of suppressing mud jumping from the front and the like from hitting the radiator 13 and also has a function of guiding air to the radiator 13.

  Further, as shown in FIGS. 13, 14, and 16, there is no gap between the inner surface 121 e of the side cover 121 and the outer edge 114 a of the upper wall 114. Furthermore, the side cover inner surface portion 121e and the outer edge portion 117d of the outermost mudguard member 117 are configured not to have a gap.

  Here, in the second embodiment, the upper wall portion 114 and the mudguard member 117 are integrally formed. For this reason, there is no gap between the upper wall portion 114 and the mudguard member 117.

  Further, as shown in FIG. 13, the mudguard member 117 is arranged so that the front surface portion 13t (see FIG. 14) of the radiator 13b cannot be seen when viewed from the front (arrow FWD direction). Specifically, the plurality of mudguard members 117 are attached to the radiator 13b with a predetermined angle with respect to the traveling direction (arrow FWD direction). Moreover, as shown in FIGS. 19-21, the 2nd mudguard member 117 from the outer side is provided so that it may become the longest forward among the several mudguard members 117. FIG.

  Moreover, as shown in FIGS. 19-21, the upper wall part 114 is formed so that it may extend in the front diagonally upward direction. Furthermore, the upper part of the mudguard member 117 formed integrally with the upper wall part 114 is formed so as to extend obliquely upward in the forward direction. In addition, when viewed in a plan view, the outer portion of the upper wall portion 114 (the portion on the side cover 121 side) is formed to extend forward from the inner portion. Thereby, it is possible to take in more air along the inner surface 121e of the side cover 121.

  Next, the left air guide device 160 as viewed from the front of the vehicle will be described. The air guide device 160 includes a side cover 122 and an upper wall portion 115. Moreover, as shown in FIGS. 12 to 14 and FIGS. 16 to 18, the side cover 122 is symmetrical with the side cover 121 as described above, and as shown in FIGS. 12 to 14 and 16. The outer wall portion of the wind guide device 160 is configured to include the side cover 122. The side cover 122 constituting the outer wall portion includes a screw insertion portion 122a. By inserting the screw 200 into the screw insertion portion 122a and screwing it into the nut 201 embedded in the nut embedding portion 118a (see FIG. 15) included in the outermost mudguard member 118 described later, the side cover 122 is It is fixed to the mudguard member 118.

  Here, in 2nd Embodiment, as shown in FIGS. 12-16, the wind guide apparatus 160 is comprised by the outer side wall part which consists of the side cover 122, and the upper wall part 115. As shown in FIG. The side cover 122 constituting the outer wall portion of the air guide device 160 includes a screw insertion portion 122a that protrudes inward. By inserting the screw 200 into the screw insertion portion 122a and screwing it into the nut 201 embedded in the nut embedding portion 118a (see FIG. 15) included in the outermost mudguard member 118 described later, the side cover 122 is It is fixed to the mudguard member 118.

  Moreover, as shown in FIGS. 12-14 and FIG. 16, the shape of the side cover 122 which comprises the outer side wall part of the air guide apparatus 160 is formed so that it may spread in the vehicle width direction outer side. Two openings 122 b are provided on the side surface of the side cover 122. Furthermore, as shown in FIG. 13, the lower end 122 c of the side cover 122 is formed to extend below the lower end of the mudguard member 118.

  As shown in FIGS. 12 and 14, the front end 122 d of the side cover 122 is formed to extend to the outside in the vicinity of the front fork 5. That is, the side cover 122 is configured to be able to guide air having a high flow velocity passing through the arrow B direction side (outside) of the front fork 5 where the air flow is not inhibited by the front fork 5 toward the mudguard member 118. Has been.

  In the second embodiment, as shown in FIGS. 13, 14, and 16, the mudguard member 118 is fixed to the inner side surface 13 g of the radiator 13. Specifically, the mudguard member 118 includes two boss portions 118b in the innermost part, and is configured to be connected to the two boss insertion holes 13s on the radiator inner side surface 13g. Further, as shown in FIG. 15, the plurality of mudguard members 118 are fixed by being connected by a connecting member 118c. The mudguard member 118 has a function of suppressing mud jumping from the front and the like from hitting the radiator 13 and also has a function of guiding air to the radiator 13.

  As shown in FIGS. 13, 14, and 16, there is no gap between the inner surface 122 e of the side cover 122 and the outer edge 115 a of the upper wall 115. Furthermore, a gap is not formed between the side cover inner surface portion 122d and the outer edge portion 118d of the outermost mudguard member 118.

  Here, in the second embodiment, the upper wall portion 115 and the mudguard member 118 are integrally formed. For this reason, there is no gap between the upper wall portion 115 and the mudguard member 118.

  Further, as shown in FIG. 13, the mudguard member 118 is arranged so that the front surface portion 13u (see FIG. 14) of the radiator 13c cannot be seen when viewed from the front (arrow FWD direction). Specifically, the plurality of mudguard members 117 are attached to the radiator 13c in a state having a predetermined angle with respect to the traveling direction (arrow FWD direction). Further, as shown in FIGS. 22 to 24, the second mudguard member 118 from the outside is provided so as to be longest forward among the plurality of mudguard members 118.

  Moreover, as shown in FIGS. 22-24, the upper wall part 115 is formed so that it may extend in the front diagonally upward direction. Further, the upper portion of the mudguard member 118 formed integrally with the upper wall portion 115 is formed so as to extend obliquely upward in the forward direction. In addition, when viewed in a plan view, the outer portion (the portion on the side cover 122 side) of the upper wall portion 115 is formed to extend forward from the inner portion. Thereby, it is possible to take in more air along the inner surface 122e of the side cover 122.

  In the second embodiment, as described above, by providing the side cover 121 (122) constituting the outer wall portion, the flow passes through the outside of the front fork 5 and the flow rate is not hindered by the front fork 5. Since air can be taken into the air guide device 150 (160), an air guide effect equivalent to that of the first embodiment can be obtained. Further, by not providing the outer wall portion and the side cover separately, the number of parts can be reduced as compared with the first embodiment, so that the vehicle body can be reduced in weight.

  In addition, as described above, the upper wall portion 114 (115) and the mudguard member 117 (118) are configured integrally, so that the upper wall portion 114 (115) and the mudguard member 117 (118) The number of parts can be reduced as compared with the case of providing them separately. As a result, the vehicle body can be reduced in weight compared to the first embodiment. Moreover, the mechanical strength of the mudguard member 117 (118) can be further improved by integration with the upper wall portion 114 (115).

  In the second embodiment, as described above, there is a gap between the inner surface 121d (122d) of the side cover 121 (122) and the outermost edge 117d (118d) of the mudguard member 117 (118). By not including the air, the air taken in from the traveling direction (arrow FWD direction) by the side cover 121 (122) and guided toward the radiator front surface portion 13t (13u) is the side cover inner surface portion 121e (122e). And it can suppress passing the outer side of the radiator 13b (13c) through the clearance gap between the mudguard member 117 outermost edge part 117d (118d). As a result, more air can be guided to the core portion 13a of the radiator.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, an off-road motorcycle is shown as an example of a vehicle equipped with a radiator. However, the present invention is not limited to this, and a tri- The present invention can also be applied to other off-road vehicles such as ATV (All Terrain Vehicle).

  Moreover, although the said 1st Embodiment showed the example which provided the wind guide device so that it might not have a clearance gap between the outer side wall part of an air guide device, an upper wall part, an inner wall part, and a radiator, respectively. The present invention is not limited to this, and the wind guide device is provided so as not to have at least a gap between the outer wall portion, the upper wall portion, the inner wall portion, and the radiator of the wind guide device. Also good.

  Moreover, in the said 1st Embodiment, although the example which provided the opening part by opening the lower part of the area | region enclosed by an outer side wall part, an upper wall part, and an inner wall part was shown, this invention is not limited to this. The lower wall portion may be provided in the lower portion of the region surrounded by the outer wall portion, the upper wall portion, and the inner wall portion, and the opening portion may be provided in the lower wall portion.

  Moreover, in the said 1st Embodiment, although the outermost edge part of an outer side wall part showed the example arrange | positioned inside the outermost part of the width direction of a side cover, this invention is not limited to this, An outer side wall part You may arrange | position so that the outermost edge part of this may be located outside the outermost part of a side cover.

  Moreover, in the said 2nd Embodiment, although the example which does not provide the inner wall part which comprises an air guide apparatus was shown, this invention is not restricted to this, In 2nd Embodiment which comprises an air guide apparatus, an inner wall part May be disposed inside the innermost part of the mudguard member.

1 is a side view showing an overall structure of a motorcycle according to a first embodiment of the present invention. Fig. 2 is a side view showing a structure around a radiator of the motorcycle according to the first embodiment shown in Fig. 1. Fig. 2 is a plan view showing a structure around a radiator of the motorcycle according to the first embodiment shown in Fig. 1. FIG. 2 is a front view showing a structure around a radiator of the motorcycle according to the first embodiment shown in FIG. 1. FIG. 2 is a front view for explaining the structures of a wind guide device, a mudguard member, and a mudguard plate on the right side when viewed from the front of the motorcycle according to the first embodiment shown in FIG. 1. FIG. 2 is a cross-sectional view for explaining the structure of a wind guide device, a mudguard member, and a mudguard plate on the right side when viewed from the front of the motorcycle according to the first embodiment shown in FIG. 1. FIG. 2 is a front view for explaining the structure of a wind guide device, a mudguard member, and a mudguard plate on the left side when viewed from the front of the motorcycle according to the first embodiment shown in FIG. 1. FIG. 2 is a cross-sectional view for explaining the structure of a wind guide device, a mudguard member, and a mudguard plate on the left side when viewed from the front of the motorcycle according to the first embodiment shown in FIG. 1. Fig. 2 is a side view showing a structure around a radiator of the motorcycle according to the first embodiment shown in Fig. 1. FIG. 2 is a plan view showing a flow of air guided to a right-side radiator as viewed from the front of the motorcycle according to the first embodiment shown in FIG. 1. FIG. 2 is a plan view showing a flow of air guided to a left-side radiator as viewed from the front of the motorcycle according to the first embodiment shown in FIG. 1. FIG. 6 is a side view showing an overall structure of a motorcycle according to a second embodiment of the present invention. FIG. 13 is a front view for illustrating a structure around a radiator of the motorcycle according to the second embodiment shown in FIG. 12. FIG. 13 is a cross-sectional view taken along line 300-300 in FIG. 12 for illustrating the structure around the radiator of the motorcycle according to the second embodiment shown in FIG. 12. FIG. 15 is a partial enlarged view of a mounting portion of a side cover of the motorcycle according to the second embodiment shown in FIG. 14. FIG. 13 is a cross-sectional view taken along the line 400-400 in FIG. 12 for illustrating the structure around the radiator of the motorcycle according to the second embodiment shown in FIG. FIG. 13 is a side view for explaining the structure of the side cover on the right side as seen from the front of the motorcycle according to the second embodiment shown in FIG. 12. FIG. 13 is a side view for explaining the structure of the side cover on the left side as viewed from the front of the motorcycle according to the second embodiment shown in FIG. 12. FIG. 13 is a plan view for explaining the structure of the upper wall portion and the mudguard member on the right side as seen from the front of the motorcycle according to the second embodiment shown in FIG. 12. FIG. 13 is a front view for explaining the structure of the upper wall portion and the mudguard member on the right side as seen from the front of the motorcycle according to the second embodiment shown in FIG. 12. FIG. 13 is a side view for explaining the structure of the upper wall portion and the mudguard member on the right side as seen from the front of the motorcycle according to the second embodiment shown in FIG. 12. FIG. 13 is a plan view for explaining the structure of the upper wall portion and the mudguard member on the left side as viewed from the front of the motorcycle according to the second embodiment shown in FIG. 12. FIG. 13 is a front view for explaining the structure of the upper wall portion and the mudguard member on the left side as viewed from the front of the motorcycle according to the second embodiment shown in FIG. 12. FIG. 13 is a side view for explaining the structure of an upper wall portion and a mudguard member on the left side as viewed from the front of the motorcycle according to the second embodiment shown in FIG. 12.

Explanation of symbols

1 Motorcycle (vehicle)
5 Front fork 5a, 5b Outermost part 6 Front wheel 10 Engine 13, 13b, 13c Radiator 13a Core part 13d, 13f Upper part (upper end part)
13e, 13g Inner side surface (the other side end)
13l, 13n outer side (one side end)
14, 15 Air guide device 14a, 15a Outer wall part 14b, 15b Upper wall part 14c, 15c Inner wall part 14e, 15e Front end part 14f, 15f Front end part 14h, 15h Rear end part 14i, 15i Rear end part 14l, 15l Rear End 14o, 15o Outermost end (outermost)
16a, 16b, 16c, 16d, 16e, 16f Seal member 17, 18 Mudguard member 17c, 18c Front air guide part 17d, 18d Rear air guide part 17e, 18e Rear end part 19, 20 Mudguard plate 21, 22 Side cover 21a 22a Outermost part 21b, 22b Front end part 114, 115 Upper wall part 114a, 115a Outer edge part 117, 118 Mudguard member 117d, 118d Outer edge part 121, 122 Side cover 121d, 122d Front end part 121e, 122e Inner surface part 150, 160 apparatus

Claims (21)

Engine,
A radiator including a first end and a second end spaced apart in the vehicle width direction, and a core that is provided between the first end and the second end, and through which cooling water for cooling the engine passes. ,
Arranged so that there is substantially no gap between the outer wall extending from the front toward one end of the radiator and the upper end of the radiator from the front and near the upper end of the radiator. And a wind guide device including an upper wall portion.   The vehicle according to claim 1, wherein the outer wall portion is a side cover. A front wheel and a front fork for supporting the front wheel;
The vehicle according to claim 2, wherein a front end portion of the side cover is formed to extend forward to the vicinity of the front fork.   The vehicle according to claim 2, wherein an inner surface portion of the side cover and an outer edge portion of an upper wall portion of the air guide device are arranged so as not to have a substantial gap. A front wheel and a front fork for supporting the front wheel;
The vehicle according to claim 1, wherein a front end portion of the outer wall portion is provided so as to be located outside an outermost portion of the front fork as viewed from the front.   2. The vehicle according to claim 1, wherein the air guide device further includes an inner wall portion extending from the front toward the other end portion of the radiator.   The vehicle according to claim 6, wherein a lower portion of a region surrounded by the outer wall portion, the upper wall portion, and the inner wall portion of the wind guide device is open.   The vehicle according to claim 1, further comprising a plurality of slat-shaped mudguard members disposed in a region surrounded by the outer wall portion and the upper wall portion of the wind guide device.   The vehicle according to claim 8, wherein an upper wall portion of the wind guide device is formed integrally with the mudguard member. The outer wall portion of the wind guide device is a side cover,
The vehicle according to claim 8, wherein an inner surface portion of the side cover and an outer edge portion of the outermost mudguard member are arranged so as not to have a substantial gap.   The vehicle according to claim 8, wherein the plurality of mudguard members are arranged such that a front portion of the radiator is not seen when viewed from the front. An inner wall extending from the front toward the other end of the radiator;
The mudguard member has a wind guide function,
The mudguard member is
A front wind guide portion provided at a front portion of the mudguard member and formed so as to extend along a direction in which the outer wall portion extends in a plan view;
It is provided behind the front air guide part so as to protrude toward the inner wall part side so that the front part of the radiator cannot be seen when viewed from the front and is continuous with the front air guide part. The vehicle according to claim 8, wherein the vehicle integrally includes a formed rear air guide portion.   The vehicle according to claim 12, wherein a vicinity of a rear end portion of the rear air guide portion of the mudguard member is provided so as to extend in a substantially vertical direction with respect to a front surface portion of the radiator in a plan view. .   The vehicle according to claim 8, wherein the plurality of mudguard members are connected in the vicinity of a lower portion of the front portion of the radiator and are connected by a mudguard plate having a mudguard function.   Between the rear end portion of the outer wall portion of the wind guide device and one end portion of the radiator, between the rear end portion of the upper wall portion of the wind guide device and the upper end portion of the radiator, and The vehicle according to claim 12, wherein a seal member is disposed between at least one of the rear end portion of the inner wall portion of the wind device and the other end portion of the radiator.   The vehicle according to claim 6, wherein the outer wall portion, the upper wall portion, and the inner wall portion are integrally formed.   The vehicle according to claim 6, wherein a front end portion of the outer wall portion is configured to be positioned forward of a front end portion of the inner wall portion.   The vehicle according to claim 1, wherein the outer wall portion is formed in a flat surface shape.   The vehicle according to claim 1, wherein the air guide device is fixed to the radiator. A side cover arranged to cover at least one portion of the side of the outer wall portion;
2. The vehicle according to claim 1, wherein the outermost portion of the outer wall portion is disposed at the same position as the outermost portion in the width direction of the side cover as viewed from the front or at a position inside the outermost portion of the side cover. .   The vehicle according to any one of claims 1 to 20, comprising an off-road motorcycle.

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