JP7486466B2 - Motorcycle and vehicle parts - Google Patents

Description

The present invention relates to vehicles and vehicle parts.

Vehicles such as motorcycles are provided with an exterior part called a cowling to reduce air resistance while driving. The cowling is provided with appropriate openings to adjust the flow of air in and out while driving. For example, Patent Document 1 describes a cowling for motorcycles. This cowling is provided with an opening to exhaust air that has flowed around the outside of the engine.

JP 2005-178621 A

The cowling described in Patent Document 1 has the risk of heated air being exhausted from the openings flowing toward the occupants.

The present invention aims to provide a vehicle and vehicle components that can prevent heated air from flowing toward the occupants.

As a means for solving the above problem, the invention described in claim 1 comprises a vehicle body frame (F), an engine (P) supported by the vehicle body frame (F), an exhaust device (X) connected to the engine (P) and through which exhaust gas flows, and an exterior part (C) provided on the vehicle body frame (F), covering the engine (P) and the exhaust device (X) and having a first opening (C1) through which air flows, the first opening (C1) having a first inclined portion (C1A) on a front side, the first inclined portion (C1A) being disposed forward relative to a riding position of an occupant and being formed so as to widen outward in a vehicle width direction as it goes from the front side to the rear side compared to the front exterior part (C) in a plan view, and guiding a first traveling wind flowing inside the exterior part (C) so as to be discharged from the first opening (C1), the exterior part (C) having a second inclined portion (C1A) disposed below the first opening (C1) and below a step (18) on which the soles of the occupant's feet are placed, an opening (C2) is formed, and a third opening (C3) is formed to the side of the exhaust device (X) rear of the second opening ( C2), the second opening (C2) has a second inclined portion (C2A) on the rear side, the second inclined portion (C2A) is formed at a third angle (θ3) smaller than a first angle (θ1) with respect to a front-to-rear direction of the exterior part (C) at an attachment position in a plan view, and guides the first traveling wind to be discharged rearward from the second opening (C2), the third opening (C3) guides a second traveling wind flowing outside the exterior part (C) to the side of the exhaust device (X), and the third opening (C3) is arranged below the step (18) and to the side of the exhaust device (X), and rearward of a catalytic device (XT) of the exhaust device (X) in a side view, and takes in the second traveling wind rearward of the catalytic device (XT).

According to this configuration, the traveling wind flowing outside the first inclined portion of the exterior part flows from the front to the rear in the outward direction in the vehicle width direction, so that when the heated air flowing inside the exterior part exits the first opening, it is pulled outward in the vehicle width direction and is discharged from the first opening toward the outward direction in the vehicle width direction along the inside while being pulled outward in the vehicle width direction. According to this configuration, it is possible to prevent the heated air from hitting the occupants.
Furthermore, outside air can be guided to the side of the exhaust device, thereby cooling the exhaust device.
In addition, since the heated air flowing inside the exterior part is discharged from the second opening and then flows along the outside of the second inclined portion, it is possible to prevent the heated air from hitting the occupant. Furthermore, with this configuration, the second opening is disposed lower than the occupant, and it is not necessary to provide an inclined portion on the front side as in the first opening, and the discharged air can be smoothly circulated rearward.

In the invention described in claim 2 , the second inclined portion (C2A) may be provided more inwardly than the first inclined portion (C1A) in the vehicle width direction.

With this configuration, the air heated by the exhaust device can be exhausted from the second opening.

In addition, the third opening (C3) of the invention described in claim 3 may be formed below the position of a step (18) on which the soles of the occupant's feet are placed.

With this configuration, air can be taken in through the third opening, reducing the wind that hits the area near the soles of the passenger's feet.

In addition, the first opening (C1) of the invention described in claim 4 may have a first air guide section (C1B) on the rear side, and the first air guide section (C1B) may be formed so as to expand outward in the vehicle width direction as it moves from the front side to the rear side.

This configuration makes it easier for air circulating inside the exterior component to be discharged through the first opening.

The first inclined portion (C1A) of the invention described in claim 5 may be formed so as to widen outward in the vehicle width direction as it goes from the front side to the rear side.

This configuration can further improve the effect of preventing heated air from hitting the occupants.

The invention described in claim 6 is a vehicle part constituted by an exterior part having a main body attached to a body frame (F), the vehicle part being provided on the body frame (F) of a motorcycle (1) having the body frame (F), an engine (P) supported by the body frame (F), and an exhaust system (X) connected to the engine (P) and through which exhaust gas flows, the vehicle part is provided on the body frame (F) of the motorcycle (1) having the body frame (F), an engine (P) supported by the body frame (F), and an exhaust system (X) connected to the engine (P) and through which exhaust gas flows, the vehicle part covers the engine (P) and the exhaust system (X), a first opening (C1) is formed through which air flows in the main body part, the first opening (C1) has a first inclined portion (C1A) on the front side, the first inclined portion (C1A) is disposed forward compared to a riding position of a rider, and is formed so as to widen outward in the vehicle width direction as it goes from the front side to the rear side compared to the main body part on the front side in a plan view, and guides a first traveling wind flowing inside the main body part so as to be discharged from the first opening (C1), the main body part being disposed below the first opening (C1) and in a position where the soles of the rider's feet are a second opening (C2) is formed below a step (18) on which the exhaust device (X) is placed , and a third opening (C3) is formed rearward of the second opening (C2) and to the side of the exhaust device (X) , the second opening (C2) has a second inclined portion (C2A) on its rear side, the second inclined portion (C2A) is formed at a third angle (θ3) smaller than a first angle (θ1) with respect to the fore-and-aft direction of the main body portion at the attachment position in a plan view, and guides the first traveling wind to be discharged rearward from the second opening (C2) , the third opening (C3) guides a second traveling wind flowing outside the main body portion to the side of the exhaust device (X), and the third opening (C3) is positioned below the step (18) and to the side of the exhaust device (X), and rearward of a catalytic device (XT) of the exhaust device (X) in a side view, and takes in the second traveling wind rearward of the catalytic device (XT).

This configuration allows the heated air flowing inside to be discharged from the first opening along the inside of the first inclined portion toward the outside in the vehicle width direction, providing a vehicle component that makes it difficult for the heated air to hit the occupants.

The present invention makes it difficult for heated air to flow toward the occupants.

1 is a side view of a vehicle according to an embodiment of the present invention. FIG. 2 is a side view showing the configuration of an under cowl. FIG. 2 is a cross-sectional view showing a configuration of an under cowl. FIG. 2 is a cross-sectional view showing a configuration of an under cowl.

As shown in FIG. 1, the vehicle 1 is, for example, a saddle-type motorcycle. In the following description, the front-rear direction, left-right direction, and up-down direction are appropriately set, with the front being the front side and the rear being the rear side as seen from the driver along the traveling direction of the vehicle 1. The vehicle 1 is also appropriately referred to as a vehicle body. The vehicle 1 includes, for example, a vehicle body frame F supported by a front wheel WF and a rear wheel WR, and an internal combustion engine P supported by the vehicle body frame F.

The vehicle body frame F is formed, for example, by combining metal components such as metal pipes to provide high rigidity. The vehicle body frame F is not limited to being made of metal materials, and may be made of composite materials as long as sufficient strength is ensured. The vehicle body frame F comprises a main frame F1 disposed at the front and a subframe F2 connected to the rear of the main frame F1. The main frame F1 is formed, for example, as a truss frame made of a combination of steel pipes.

A cylindrical head pipe 3 is provided at the front end of the main frame F1. The head pipe 3 is attached tilted backward relative to the vertical direction. A steering stem S that rotatably supports a handlebar 7 (also called a handle) is attached to the head pipe 3. A shaft (not shown) of the steering stem S is inserted into the head pipe 3.

The steering stem S is rotatably supported by the head pipe 3. The lower part of the steering stem S rotatably supports the front wheel WF. For example, in response to the operation of the handlebar 7, the steering stem S rotates the front wheel WF left and right about a rotation axis along the vertical direction. The rotation axis is set at a predetermined caster angle tilted backward with respect to the vertical direction.

A top bridge 4 formed in a plate shape is fixed to the upper end of the steering stem S. A bottom bridge 14 formed in a plate shape is fixed to the lower end of the steering stem S. The top bridge 4 and the bottom bridge 14 are arranged in parallel. The upper parts of a pair of rod-shaped front forks 15 arranged on the left and right are fixed through the top bridge 4 and the bottom bridge 14.

The lower part of the pair of left and right front forks 15 axially supports the front wheel WF so that it can rotate freely. The front wheel WF is, for example, an integrally molded spoke wheel in which the rim and hub are connected by multiple spokes. The front wheel WF may be a disc wheel or a wire spoke wheel. At least one of the front forks 15 is provided with a braking device B1 for braking. The braking device B1 is, for example, a disc brake. The braking device B1 may also be a drum brake.

A front fender G1 for mudguarding is placed above the front wheel WF. The front fender G1 is supported by a pair of left and right front forks 15 via stays G2. The front fender G1 is formed to cover the upper part of the front wheel WF. A flexible cushion device D1 is provided in the middle of the pair of left and right front forks 15. The cushion device D1 buffers and attenuates vibrations transmitted from the front wheel WF to the vehicle 1.

A handlebar 7 extending in the left-right direction is fixed to the top of the top bridge 4. The handlebar 7 is a bar handle that extends left and right. A pair of left and right handle grips 5 are provided on both ends of the handlebar 7.

A fuel tank U is provided on the main frame F1 between the rear of the head pipe 3 and the seat 34. The lower part of the fuel tank U is covered by an exterior part C. The exterior part C is fixed to the body frame F using a fixing method such as screwing. The exterior part C reduces the air resistance generated on the vehicle 1 while it is moving. The exterior part C is formed, for example, by resin molding.

The exterior part C may be made of other materials such as fiber reinforced plastic (FRP) or carbon fiber reinforced plastic (CFRP). The exterior part C includes, for example, a pair of left and right upper cowls CU, a pair of left and right under cowls CD, and a front cowl CF provided on the front side.

Both sides of the main frame F1 are covered by a pair of upper cowls CU, one on the left and one on the right. The upper cowl CU is formed, for example, as a left and right split. The upper cowl CU may be formed, for example, as a single unit on the left and right. A front cowl CF that covers the front part of the vehicle 1 is provided in front of the pair of upper cowls CU, the left and right. A pair of headlights 12, the left and right, are provided in front of the front cowl CF.

A pair of left and right front turn signals CB are provided above the pair of left and right headlights 12. A windshield CW is provided above the front cowl CF to protect from the wind. A pair of left and right rearview mirrors CM are fixed to the left and right sides of the windshield CW. An under cowl CD that covers the engine P and exhaust system X (see Figure 2) is provided below the pair of left and right upper cowls CU.

A subframe F2 is provided at the rear end of the main frame F1, hanging down. The subframe F2 is formed, for example, as a cast part of aluminum material. An engine P, which generates driving force, is fixed to the front side of the subframe F2. A transmission P2 is connected to the engine P. The transmission P2 is provided, for example, with multiple speed change gears arranged in multiple stages and a clutch. The transmission P2 reduces the rotational power generated by the engine P to a rotation speed corresponding to the multiple speed change gears, and outputs a rotational driving force with increased torque.

A brake pedal 17 for deceleration is attached to the right side of the engine P in the vehicle width direction. A pair of steps 18 are provided on both the left and right sides of the engine P. The soles of the driver's feet are placed on the top of the steps 18. A rotation shaft FS that rotatably supports the tips of a pair of left and right swing arms 24 is provided on the subframe F2. A side stand 21 for supporting the vehicle 1 by standing it upright is rotatably supported below the left side of the vehicle 1.

A rear wheel WR is rotatably supported at the rear ends of a pair of left and right swing arms 24. The rear wheel WR is, for example, an integrally molded spoke wheel in which a rim and a hub are connected by multiple spokes. The rear wheel WR may be a disc wheel or a wire spoke wheel. A tire of the same size as or a different size from the front wheel WF is attached to the rear wheel WR. A brake device B2 for braking the rear wheel WR is provided on the right side of the rear end of the swing arm 24. The brake device B2 is, for example, a disc brake.

The brake device B1 may be a drum brake. With the above configuration, the rear wheel WR rotates around the tip of the swing arm 24. One end of an expandable cushion device (not shown) is rotatably supported on the tip side of the pair of left and right swing arms 24. The other end of the damper device is rotatably supported on the subframe F2. With the above configuration, the rear wheel WR is restricted by the damper device and moves up and down relative to the main frame F1. The damper device buffers and attenuates vibrations transmitted from the rear wheel WR to the vehicle 1.

The rear wheel WR is driven by a drive chain 23 provided on the left side of the engine P. The drive chain 23 transmits the rotational driving force output from the transmission P2 to a sprocket (not shown) provided on the left side of the rear wheel WR. The sprocket is a disk-shaped gear that is concentric with the rear wheel WR. A pair of left and right rear steps 22 are fixed below the subframe F2.

A seat frame F3 extending rearward is provided on the upper part of the subframe F2. A seat 34 on which a driver sits is provided on the upper part of the seat frame F3. A tandem seat 35 is provided behind the seat 34. A tail lamp 29 and a pair of left and right rear flasher lamps 28 are fixed to the lower rear part of the tandem seat 35 and above the rear wheel WR. A muffler PM is supported below the seat frame F3 via a muffler hanger MH. The muffler PM reduces the acoustic energy of the exhaust gas through friction, lowering the volume of the exhaust gas before releasing it into the atmosphere.

Next, we will explain the under cowl CD of the exterior part C.

As shown in Figures 2 to 4, an exhaust device X that discharges exhaust gas is connected to an engine P supported on a body frame F. Exhaust gas discharged from the engine P flows through the exhaust device X. The exhaust device X has an exhaust manifold XM connected to the engine P on the upstream side, a collection section XC connected to the downstream side of the exhaust manifold XM, a catalytic device XT connected to the downstream side of the collection section XC, a connecting pipe XP connected to the downstream side of the catalytic device XT, and a muffler PM connected to the downstream side of the connecting pipe XP (see Figure 1).

The exhaust manifold XM has multiple exhaust pipes provided according to the number of cylinders of the engine P, for example. The multiple exhaust pipes are formed to be equal or unequal lengths according to the engine characteristics. The collection section XC collects the multiple exhaust pipes into one flow path and collects the pulsations generated in each exhaust pipe. The collection section XC generates an inertial flow of the exhaust gas to improve exhaust efficiency. The catalyst device XT oxidizes and reduces the substances to be purified in the exhaust gas to purify it. The connecting pipe XP circulates the purified exhaust gas. The muffler PM is connected to the downstream side of the connecting pipe XP.

The engine P and exhaust system X are heat sources that generate heat while the vehicle is moving. The under-cowl CD covers the sides of the engine P and exhaust system X. The muffler PM is exposed outside the under-cowl CD (see Figure 1). The under-cowl CD reduces the air resistance of the vehicle 1 while it is moving, and also isolates the heat sources such as the engine P and exhaust system X from the occupants, reducing the heat transferred to the occupants.

The wind flows through the under cowl CD while the vehicle 1 is moving. For example, the under cowl CD is formed in approximately the same shape on the left and right sides. The under cowl CD may be formed in an asymmetric shape on the left and right sides based on the shapes of the engine P and the exhaust device X. The pair of left and right under cowls CD, for example, have an opening on the front side. The under cowl CD takes in the wind from the front side, circulates the wind around the heat source, and exhausts the heated wind from the rear. The under cowl CD exhausts the air circulating inside to the outside, and takes in air circulating outside as appropriate.

The under cowl CD has a first opening C1 formed therein through which air flows when viewed from the side. The first traveling wind taken in from the front side of the under cowl CD is heated by a heat source. A thin-film heat-shielding material (not shown) may be attached to the inside of the under cowl CD. The heat-shielding material is formed, for example, from a thin-film material such as aluminum that reflects infrared rays radiated from the heat source. The heat-shielding material may be a coating to which a heat-shielding paint is applied. The first opening C1 is an air outlet that discharges the heated first traveling wind from inside the under cowl CD to the outside.

The first opening C1 is formed, for example, above the under cowl CD in side view. The first opening C1 is, for example, a rectangular through hole. The first opening C1 is formed as an opening with a downward slope from the front side to the rear side. The first opening C1 is, for example, disposed in front of the engine P in side view. A first inclined portion C1A is formed in front of the first opening C1. A first air guide portion C1B is formed in the rear side of the first opening C1.

The first inclined portion C1A is disposed, for example, behind or to the side of the connection between the engine P and the exhaust device X in a side view. The first inclined portion C1A is disposed, for example, forward of the riding position of the occupant in a side view when the occupant is riding. The riding position of the occupant is, for example, the area occupied by the lower body of the occupant in a riding state in a side view. The area occupied by the lower body refers, for example, to a state in which the occupant sits on the seat 34, places the soles of the feet on the step 18, and the knees of the legs are bent forward. In this state, the forward of the riding position of the occupant is, for example, forward of the position of the occupant's knees. Here, the occupant refers to the rider, and the riding position of the occupant may be forward of the position of the seat 34 on which the rider sits. In addition, the above configuration makes it difficult for the occupant to be exposed to heated air, as described later.

The first inclined portion C1A is formed integrally with the under cowl CD. The first inclined portion C1A may be formed separately from the under cowl CD. The first inclined portion C1A is formed, for example, in a flat plate shape. The first inclined portion C1A is formed at a second angle θ2 that is larger than a first angle θ1 with respect to the center line of the vehicle body in the front-rear direction of the front exterior part C in a plan view. The first inclined portion C1A does not have to be formed linearly when viewed in a cross section in the plan view. The first inclined portion C1A may be formed so that the inclination in the vehicle width direction in the front-rear distance from the rear end of the first inclined portion C1A to the front end of the first opening C1 in the front-rear direction is inclined compared to the first angle θ1.

The first inclined portion C1A may be curved so that the inclination angle increases toward the rear. That is, the first inclined portion C1A may be formed so that the angle of the rear end is the second angle θ2 when viewed in cross section in a planar direction. Hereinafter, the angle refers to the angle when the vehicle 1 is viewed in cross section in a planar direction. In addition, the angle may not only be a local angle, but also the average angle of the tangent in the fore-aft direction of the region of the component part.

The first inclined portion C1A is formed so that it changes from a first angle θ1 in the area of the front under-cowl CD to a second angle θ2 at the front base end. That is, the first inclined portion C1A is formed so that it widens outward in the vehicle width direction as it moves from the front to the rear. The back side of the first inclined portion C1A guides the first traveling wind flowing through the exterior part C so that it is discharged from the first opening C1. A straightening plate (not shown) for adjusting the flow of the first traveling wind may be provided on the inside of the first inclined portion C1A as appropriate.

At the end of the first inclined portion C1A, a bent portion C1C is formed that is bent inward in the vehicle width direction. The bent portion C1C is formed to narrow the first opening C1. The bent portion C1C is formed to improve the flow speed of the first traveling wind and make it easier to discharge it from the first opening C1. The bent portion C1C generates turbulence in the first traveling wind, making it easier to mix the air flowing on the outside with the discharged first traveling wind, and widens and discharges the first traveling wind. In addition, the bent portion C1C improves the bending rigidity of the first inclined portion C1A and reduces the impact when the occupant's body comes into contact with it. The first inclined portion C1A can prevent the main body of the undercowl CD from being scratched when the undercowl CD comes into contact with another object.

The first air guide section C1B is formed so as to spread outward in the vehicle width direction as it moves from the front side to the rear side. The first air guide section C1B guides the first traveling wind on the surface side so that it flows upward as it moves from the front side to the rear side. The first air guide section C1B cooperates with the first inclined section C1A to discharge the first traveling wind to the outside from the first opening C1. With the above configuration, the first opening C1 can spread and discharge the first traveling wind flowing inside the exterior part C outward in the vehicle width direction. The first opening C1 allows the first traveling wind heated by the heat source to be spread and discharged outward in the vehicle width direction, making it less likely to hit the occupants.

When the vehicle 1 is traveling, the traveling wind flowing outside the first inclined portion C1A of the exterior part C flows from the front to the rear toward the outside in the vehicle width direction. At this time, the heated air flowing inside the exterior part C is pulled outward in the vehicle width direction as it exits the first opening C1 to the outside of the first inclined portion C1A. At this time, the heated air is discharged from the first opening C1 toward the outside in the vehicle width direction along the inside of the first inclined portion C1A, so that the heated air is less likely to hit the occupants. In the under cowl CD, a second opening C2 is formed below the first opening C1 in a side view.

The second opening C2 is formed, for example, below the under cowl CD in a side view. The second opening C2 is, for example, an air outlet that discharges the first traveling wind flowing through the exterior part C. The second opening C2 is positioned below the soles of the occupant's feet and is formed to cause the discharged first traveling wind to flow rearward and not hit the occupant. In addition, the second opening C2 and the first opening C1 are provided in different ranges in the vertical direction of the under cowl CD, so that the first traveling wind can flow to different positions relative to the exhaust device X, thereby facilitating cooling of the exhaust device X.

The second opening C2 is, for example, a rectangular through hole. The second opening C2 is formed as an opening with an upward gradient from the front side to the rear side. The second opening C2 may be formed along the up-down direction. The second opening C2 discharges the first running wind to the outside. The front end of the second opening C2 is separated from the front end of the first opening C1, the first opening C1 and the second opening C2 approach each other toward the rear side, and the rear end of the second opening C2 is adjacent to the rear end of the first opening C1.

The second opening C2 may be formed continuously with the first opening C1. A second inclined portion C2A is formed on the rear side of the second opening C2. The second inclined portion C2A is formed at a third angle θ3 smaller than the angle θ of the exterior part C with respect to the center line in the front-rear direction of the vehicle body in a plan view. Unlike the second angle θ2, the third angle θ3 does not widen the front surface side of the second opening C2 outward in the vehicle width direction, but is adjusted to an angle that allows air to flow in a shape that is approximately along the vehicle width behind the second opening C2. The second inclined portion C2A may be curved to be convex in the front-rear direction so that the angle of the tangent becomes smaller compared to the third angle θ3 toward the rear. The second inclined portion C2A is provided on the inside compared to the second opening C2 in the vehicle width direction. A first step portion C2B along the front-rear direction is provided at the upper and lower parts of the second inclined portion C2A.

The first step C2B is formed from the main body of the undercowl CD toward the inside in the vehicle width direction. The first step C2B becomes smaller with respect to the main body of the undercowl CD toward the rear, and disappears at the rear. The second inclined portion C2A guides the first traveling wind on the front side so that it is discharged rearward from the second opening C2.

The second inclined portion C2A, for example, discharges the first traveling wind heated by the exhaust device X from the second opening C2 to the outside and guides it rearward. The second inclined portion C2A allows the first traveling wind discharged from the second opening C2 to flow below the under cowl CD, making it less likely to hit the occupant. Therefore, the second opening C2 is located lower than the occupant, and there is no need to provide an inclined portion on the front side like the first opening, and the discharged air can flow smoothly rearward. In addition, the second inclined portion C2A discharges the first traveling wind from the second opening C2 to the outside in front of the catalytic converter XT, preventing the catalytic converter XT from overcooling and maintaining the temperature of the catalytic converter XT.

A third opening C3 is formed in the exterior part C behind the second opening C2. The third opening C3 is formed, for example, below the under cowl CD in a side view. The third opening C3 is formed below the position of the step 18 on which the sole of the occupant's foot is placed. The third opening C3 is, for example, inside the exterior part C. It is an air inlet that takes in outside air. The third opening C3 is, for example, a rectangular through hole. The third opening C3 is formed as an opening with an upward slope from the front side to the rear side. The third opening C3 may be formed along the up-down direction. The third opening C3 is disposed to the side of the exhaust device X. A third inclined portion C3A is provided in front of the third opening C3.

The third inclined portion C3A is provided inward in the vehicle width direction compared to the third opening C3. A second step portion C3B along the front-rear direction is provided at the upper and lower parts of the third inclined portion C3A. The second step portion C3B is formed from the under-cowl CD main body portion toward the inside in the vehicle width direction. The step between the second step portion C3B and the under-cowl CD main body portion becomes smaller as it moves forward, and disappears at the front.

The third inclined portion C3A guides the second traveling wind flowing outside the exterior part C on the front side from the third opening C3 to the side of the exhaust device X connected to the downstream side of the catalytic converter XT. The third inclined portion C3A takes in the second traveling wind from the third opening C3 on the rear side of the catalytic converter XT, preventing the catalytic converter XT from overcooling and maintaining the temperature of the catalytic converter XT. The third inclined portion C3A guides the second traveling wind flowing outside to the third opening C3 located below the position of the step 18 on the front side, making it less likely for the wind to hit the feet of the occupants.

Air taken in through the third opening C3 and air flowing through the undercowl CD that is not discharged through the first opening C1 and the second opening C2 is appropriately discharged through the gap between the undercowl CD and the vehicle 1 side or from the bottom of the undercowl CD.

As described above, according to the under cowl CD, the first opening C1 is provided with the first inclined portion C1A, so that the heated air in the exterior part C can be discharged outward in the vehicle width direction, and the hot air is less likely to hit the occupant. According to the under cowl CD, the second opening C2 is provided with the second inclined portion C2A, so that the heated air in the exterior part C can be guided to the rear side and discharged, and the hot air is less likely to hit the occupant. According to the under cowl CD, the third opening C3 is provided with the third inclined portion C3A, so that the second traveling wind circulating outside is guided and taken in to the third opening C3, and the wind is less likely to hit the occupant's feet.

The exterior part C described above may be provided as a vehicle part. That is, the vehicle part is provided on the vehicle body frame F, covers the engine P and the exhaust device X, and has a first opening C1 through which air flows in the main body. The vehicle part has a first inclined portion C1A in front of the first opening C1, and the first inclined portion C1A is disposed rearward or to the side of the connection between the engine P and the exhaust device X. The first inclined portion C1A of the vehicle part is formed at a second angle θ2 that is larger than the first angle θ1 with respect to the front-rear direction of the main body in a plan view. The first inclined portion C1A of the vehicle part guides the first traveling wind flowing through the main body so that it is discharged from the first opening C1.

In addition, the components in the above-described embodiment may be replaced with known components as appropriate without departing from the spirit of the present invention, and the above-described modified examples may be combined as appropriate. For example, the vehicle 1 may be applied not only to motorcycles, but also to other self-propelled vehicles and non-self-propelled vehicles. Although the vehicle 1 has been exemplified as having an internal combustion engine P, it is not limited to this, and may be an electric vehicle, a fuel cell vehicle, or a hybrid vehicle that is a combination of any of these. In this case, the exterior parts may be used to adjust the flow of air based on a heat source other than an internal combustion engine.

1...vehicle 18...step C...exterior part C1...first opening C1A...first inclined portion C2...second opening C2A...second inclined portion C3...third opening C3A...third inclined portion F...vehicle body frame P...engine X...exhaust device θ1...first angle θ2...second angle θ3...third angle

Claims (6)

A vehicle body frame (F);
an engine (P) supported by the vehicle body frame (F);
an exhaust device (X) connected to the engine (P) and through which exhaust gas flows;
an exterior part (C) that is provided on the vehicle body frame (F), covers the engine (P) and the exhaust device (X), and has a first opening (C1) through which air flows;
The first opening (C1) has a first inclined portion (C1A) on the front side,
the first inclined portion (C1A) is disposed forward relative to a riding position of an occupant, and is formed to widen outward in the vehicle width direction from the front side to the rear side relative to the front exterior part (C) in a plan view, and guides a first traveling wind flowing through the exterior part (C) so as to be discharged from the first opening (C1);
the exterior part (C) has a second opening (C2) formed below the first opening (C1) and below a step (18) on which the soles of the occupant's feet are placed , and a third opening (C3) formed to the rear of the second opening (C2) and to the side of the exhaust device (X);
The second opening (C2) has a second inclined portion (C2A) on the rear side,
the second inclined portion (C2A) is formed at a third angle (θ3) that is smaller than a first angle (θ1) with respect to a front-rear direction of the exterior part (C) at an attachment position in a plan view, and guides the first traveling wind so as to be discharged rearward from the second opening (C2);
The third opening (C3) guides the second traveling wind flowing outside the exterior part (C) to a side of the exhaust device (X),
The third opening (C3) is disposed below the step (18) and to the side of the exhaust device (X), and rearward of a catalytic device (XT) of the exhaust device (X) in a side view, and takes in a second traveling wind rearward of the catalytic device (XT). The second inclined portion (C2A) is provided on the inner side relative to the first inclined portion (C1A) in the vehicle width direction.
A motorcycle (1) according to claim 1 . The third opening (C3) is formed below the position of the step (18).
A motorcycle (1) according to claim 1 or 2 . The first opening (C1) has a first air guide section (C1B) on the rear side,
The first air guide portion (C1B) is formed so as to expand outward in the vehicle width direction from the front side to the rear side.
A motorcycle (1) according to any one of claims 1 to 3 . The first inclined portion (C1A) is formed so as to widen outward in the vehicle width direction as it moves from the front side to the rear side.
A motorcycle (1) according to any one of the preceding claims . A vehicle part including an exterior part having a main body attached to a vehicle body frame (F),
a first opening (C1) is provided on the body frame (F) of a motorcycle (1) having the body frame (F), an engine (P) supported by the body frame (F), and an exhaust device (X) connected to the engine (P) and through which exhaust gas flows, the first opening (C1) covers the engine (P) and the exhaust device (X) and is formed in the main body portion so that air flows through the first opening (C1);
The first opening (C1) has a first inclined portion (C1A) on the front side,
the first inclined portion (C1A) is disposed forward of a riding position of an occupant, and is formed to widen outward in the vehicle width direction from the front side to the rear side compared to the main body portion on the front side in a plan view, and guides a first traveling wind flowing through the main body portion so as to be discharged from the first opening (C1);
The main body portion has a second opening (C2) formed below the first opening (C1) and below a step (18) on which the soles of the occupant's feet are placed , and a third opening (C3) formed to the rear of the second opening (C2) and to the side of the exhaust device (X),
The second opening (C2) has a second inclined portion (C2A) on the rear side,
the second inclined portion (C2A) is formed at a third angle (θ3) smaller than a first angle (θ1) with respect to a front-rear direction of the main body portion at an attachment position in a plan view, and guides the first traveling wind to be discharged rearward from the second opening (C2);
The third opening (C3) guides the second traveling wind flowing outside the main body portion to a side of the exhaust device (X),
The third opening (C3) is positioned below the step (18) and to the side of the exhaust device (X), and rearward of a catalytic device (XT) of the exhaust device (X) in a side view, and takes in a second traveling wind rearward of the catalytic device (XT).

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