JP5088087B2 - Rear body structure of scooter type vehicle - Google Patents

Description

  The present invention relates to a rear body structure of a scooter type vehicle.

  Some scooter type vehicles have a rear cowling that covers the upper part of the rear wheel from the side, and the rear end of the rear cowling is arranged behind the rear wheel.

  In such a vehicle, for example, when lowering the seat height, the position of the rear end of the rear cowling is separated considerably rearward from the rear wheel in order to avoid interference between the rear cowling and the rear wheel (see, for example, Patent Document 1). ).

In some cases, the rear end of the rear cowling is disposed behind the rear wheel, and an article storage chamber is disposed between the seat and the rear wheel (see, for example, Patent Document 2).
JP 2006-096088 A JP 2006-111180 A

  However, if the position of the rear end of the rear cowling is separated considerably rearward from the rear wheel, the vehicle size becomes large, resulting in an increase in weight and an increase in the size of the vehicle. In particular, since the rear overhang increases, the position of the center of gravity of the vehicle becomes rearward, and there is a risk that the front wheel load at the time of turning decreases and the turning stability decreases. Further, if the overhang on the front side is increased in consideration of the weight balance between the front and rear of the vehicle, the vehicle body becomes larger and heavier, making it difficult to handle the vehicle.

  Furthermore, the hot air from the engine or the like tends to stay in the rear cowling blocked by the increased rear overhang, and it is necessary to forcibly remove the hot air using, for example, an electric fan or the like. An extra voltage is required, which increases the size of the generator and increases the vehicle weight.

  On the other hand, when the article storage chamber is disposed between the seat and the rear wheel as in the vehicle described in Patent Document 2, for example, a rear storage box is provided below the rear seat portion, and the seat height is lowered accordingly. I can't. Further, since the trunk box is provided in the rear portion of the vehicle body cover that covers the rear portion of the vehicle body, the rear overhang increases, and the strength of the vehicle body cover needs to be considerably increased, resulting in an increase in weight. Furthermore, when the vehicle travels with the articles stored in the trunk box, the weight of the rear part of the vehicle body is further increased, and the weight balance of the front and rear of the vehicle is greatly collapsed, which may cause a decrease in steering stability.

  The present invention has been made in consideration of the above-described circumstances, and can prevent interference between the rear wheel and the rear cowling when swinging the rear wheel, reduce the seat height, and improve steering stability by concentrating the mass. An object of the present invention is to provide a rear body structure of a scooter type vehicle that is improved.

In order to solve the above-described problems, a rear body structure of a scooter type vehicle according to the present invention includes a seat, a rear cowling that covers the lower portion of the rear portion of the seat from the periphery , and a vehicle height. In a scooter type vehicle having a rear wheel that is swingable in a direction and a rear fender that covers the upper part of the rear wheel and swings integrally with the rear wheel, the rear cowling overlaps with the rear wheel in plan view At least a part of the rear cowling is cut out from the rear edge of the rear cowling toward the front of the vehicle, and when viewed from the side, the front end position of the notch is the same as the axle of the rear wheel or the axle. By setting the position further forward, the rear fender that covers the rear wheel or the rear wheel when the rear wheel swings and the rear cowling are prevented from interfering with each other.

  In order to solve the above-described problem, as described in claim 2, a brake lamp is disposed in the vicinity of the front end of the notch and above the front end of the notch.

  Furthermore, in order to solve the above-described problem, as described in claim 3, the side portion of the rear cowling located on both the left and right sides of the notch has an acute-angled top portion protruding rearward in a side view. It is formed in a substantially triangular shape, and a direction indicator lamp is disposed in the vicinity of the acute angle top.

In order to solve the above-described problem, a power transmission device for transmitting engine power to the rear wheels is disposed on one side in the vehicle width direction of the rear wheels as described in claim 4. A rear swing arm that supports the rear wheel and an exhaust muffler that constitutes an engine exhaust system are disposed on the other side in the vehicle width direction of the rear wheel while being housed in a power transmission case, and on both sides of the rear fender The lower end is attached to either the power transmission case or the power transmission case cover that covers the lower end, and either the rear swing arm or the exhaust muffler.

  In order to solve the above-described problem, as described in claim 5, a pair of left and right rear covers extending in the front-rear direction of the vehicle is disposed below the rear cowling, and the rear cover is provided with the rear cover. In the side view, an overhanging portion that covers the front portion of the rear fender is formed so that the front portion of the rear fender and the rear portion of the rear cover overlap each other.

  According to the rear vehicle body structure of the scooter-type vehicle according to the present invention, it is possible to prevent the rear fender and the rear cowling from covering the rear wheel or the rear wheel when the rear wheel swings, and to arrange the rear cowling and the seat low. The hot air in the space below the seat can be discharged rearward from the notch.

  In addition, the foot landing property is improved, leading to a lower center of gravity, and the running stability is improved. Furthermore, the mass can be concentrated and the turning performance can be improved, while the vibration of the rear cowling during high speed running can be greatly reduced.

  And the visibility to the following vehicle of a brake light can be improved, and the visibility from the circumference | surroundings of a direction indicator lamp also becomes favorable. In addition, the rear part of the vehicle body can be protected from muddy water and stepping stones that jump from the rear wheel.

  The best mode for carrying out the present invention will be described below with reference to the drawings. However, the present invention is not limited to these embodiments.

  FIG. 1 is an overall left side view of a scooter type vehicle showing an embodiment of a rear body structure of the scooter type vehicle according to the present invention. FIG. 2 is an overall plan view of the scooter type vehicle of FIG. FIG. 3 is a left side view of the scooter type vehicle shown in FIG. FIG. 4 is an enlarged right side view of the rear part of the scooter type vehicle of FIG.

  The scooter type vehicle 10 shown in FIGS. 1 and 2 is configured by covering a vehicle body frame 11 and the like shown in FIG. Here, when compared with other motorcycles, the scooter type vehicle 10 includes a leg shield 14 that protects the front part of the occupant's legs seated on the seat 13 in front of the seat 13 and below the seat 13. This is a motorcycle characterized in that it is provided with a flat footboard 15 on which the foot of an occupant seated on the seat 13 is placed and the front of the seat 13 is formed lower than the seat 13. .

  As shown in FIG. 3, the vehicle body frame 11 in such a scooter type vehicle 10 includes a head pipe 16 at the front end, a front upper frame 17, an upper frame 18, a front lower frame 19, a lower frame 20, and a bridge frame. 21, a seat pillar 22 and a footboard frame 23.

  The front upper frame 17 extends from the upper part of the head pipe 16 in a rearward and downward direction, and is provided in a pair in the vehicle width direction. A pair of upper frames 18 are provided in the vehicle width direction and extend in the vehicle front-rear direction, and the lower end of the front upper frame 17 is joined to the front portion.

  The front lower frame 19 extends from the lower portion of the head pipe 16 to the lower rear side in an inclined manner substantially in parallel with the front upper frame 17, and a pair of front lower frames 19 are provided in the vehicle width direction and are joined to the pair of upper frames 18. The lower frame 20 is joined to the lower portion of the upper frame 18 in the vicinity of the joining position of the front lower frame 19, extends obliquely backward and downward, and then slopes backward and upward, and is provided in a pair in the vehicle width direction.

  The bridge frame 21 is formed in a U-shape when viewed from the front of the vehicle, and both upper ends thereof are joined to the pair of upper frames 18 at a substantially central position in the vehicle front-rear direction. Is joined to a reinforcing member (not shown) extending in the vehicle width direction. A total of two seat pillars 22 are installed between each of the bridge pillars 21 at approximately the center position in the vehicle height direction on both sides in the vehicle width direction and the rear ends of the pair of upper frames 18.

  The footboard frame 23 is disposed on the outer side of each of the pair of lower frames 20, the front end portion is formed to bend obliquely upward, is joined to the front end portion of the upper frame 18, and the other portion is bridged horizontally. It extends to the position of the frame 21 and is fixed to the lower frame 20.

  A front fork 25 (FIG. 1) that supports the front wheel 24 is pivotally supported by the head pipe 16 of the vehicle body frame 11 described above, and a handle bar 26 is connected to the upper end portion of the front fork 25 in an integrated manner. . By operating the handle bar 26, the front wheel 24 is steered so as to be rotatable in the vehicle width direction.

  An article storage box 27 and a fuel tank 28 are disposed in a center tunnel 76 described later, which is a space surrounded by the pair of front upper frame 17, upper frame 18, front lower frame 19, and lower frame 20. The A radiator 29 is disposed below the front lower frame 19 and supported by the front end portion of the upper frame 18. The fuel tank 28 is supported by a fuel tank bracket 20 </ b> A attached to the lower frame 20.

  A suspension bracket 30 is fixed to the upper frame 18 and the seat pillar 22 at the intersecting position of the upper frame 18 and the seat pillar 22. An engine 32 having a forward tilt cylinder is pivotally supported on the suspension bracket 30 and the seat pillar 22 via a link plate 31 so as to be swingable in the vehicle height direction around the engine swing shaft 33. The engine 32 is a water-cooled, for example, four-cycle single-cylinder engine, and the cooling water is cooled by the radiator 29.

  In the engine 32, a cylinder block 35, a cylinder head 36, and a head cover 37 are sequentially installed on the front surface of the crankcase 34. The cylinder block 35, the cylinder head 36, etc. Inclined. The engine swing shaft 33 is disposed at the front upper part of the crankcase 34. The engine 32 is integrated with a power transmission device 38 that transmits the power of the engine 32 on one side (for example, the left side) in the vehicle width direction of the crankcase 34 to constitute a power unit 39. A rear wheel 40 is rotatably supported by a rear portion of the power transmission device 38 via a rear wheel shaft (an axle 40a of the rear wheel 40).

  Further, the engine 32 has a front lower portion of the crankcase 34 connected to a lower end of the rear cushion unit 42 via a link lever mechanism 41 shown in FIG. The rear cushion unit 42 has a longitudinal direction substantially parallel to the vehicle height direction, and an upper end thereof is supported by the reinforcing member of the bridge frame 21. The rear cushion unit 42 cushions the swinging of the power unit 39 and the rear wheel 40 in the vehicle height direction.

  The rear cushion unit 42 is disposed between the head cover 37 of the engine 32 and the fuel tank 28 in a side view of the vehicle. In this case, since the fuel injection pipe 43 connected to the fuel tank 28 extends obliquely rearward and upward from the fuel tank 28 toward the other side (for example, the right side) in the vehicle width direction, the rear cushion unit 42 has the fuel injection pipe 43. It is arranged to be biased to one side (for example, the left side) in the vehicle width direction that is the opposite side. Accordingly, the link lever mechanism 41 is also located below the cylinder block 35 and the cylinder head 36 of the engine 32, but is biased to one side (for example, the left side) of the crankcase 34 in the vehicle width direction.

  An intake device 44 is connected to an upper surface of the cylinder head 36 in the engine 32 so as to communicate with an intake port (not shown) of the cylinder head 36. The intake device 44 is disposed above the engine 32. Among these, the air cleaner 45 constituting the intake device 44 is disposed between the pair of seat pillars 22 above the crankcase 34. The air cleaner 45 is fixedly attached to the engine 32 and is provided so as to be able to swing integrally with the engine 32 together with the other intake devices 44.

  An exhaust pipe 46 is connected to the lower surface of the cylinder head 36 in the engine 32 so as to communicate with an exhaust port (not shown) of the cylinder head 36. The exhaust pipe 46 is curvedly extended downward from the cylinder head 36 on the other side (for example, the right side) in the vehicle width direction opposite to the link lever mechanism 41, and extends backward through the lower side of the crankcase 34. Then, the exhaust muffler 47 is connected. The exhaust muffler 47 is disposed on the opposite side (for example, the right side) of the power transmission device 38 in the vehicle width direction across the rear wheel 40, and is attached to a muffler mounting bracket 48 as shown in FIG. The muffler mounting bracket 48 is connected to the right rear portion of the crankcase 34 of the engine 32 using a rear swing arm 49. Accordingly, the exhaust muffler 47 is provided so as to be able to swing together with the engine 32 together with the exhaust pipe 46.

  As shown in FIGS. 1 and 3, the vehicle body cover 12 includes a vehicle body frame 11, an article storage box 27 provided on the vehicle body frame 11, a fuel tank 28, a radiator 29, an engine 32, a rear cushion unit 42, an intake air Covers components such as the device 44 and the exhaust pipe 46 that are present in the region below the front of the seat 13. Here, the seat 13 is supported by the rear half of the upper frame 18 and the seat pillar 22 in the vehicle body frame 11, and is a seat in which a front rider seat 13A and a rear tandem seat 13B are integrated. Since the above-described article storage box 27 does not exist in the space below the seat 13, the seating surfaces of the rider seat 13A and the tandem seat 13B have no large step.

  The vehicle body cover 12 includes a front cover 50 that covers a front portion of the head pipe 16 and an upper portion of the front fork 25, an inner cover 51 that is connected to the rear edge of the front cover 50, and a rear edge of the inner cover 51. A pair of center covers 52 provided in the vehicle width direction, a pair of rear covers 53 provided in the vehicle width direction connected to the lower edge of the center cover 52, and a lower portion of the rear portion of the seat 13 are covered from the periphery. A pair of rear cowlings 54 in the vehicle width direction connected to the rear edge of the rear cover and the rear upper edge of the rear cover 53, and a pair of plate-like footboards 15 in the vehicle width direction connected to the lower edge of the rear cover 53; A pair of under covers 56 in the vehicle width direction that are connected to the lower outer edges of these footboards 15 and a bottom that covers the space between the lower edges of these under covers 56 Configured to have a bar 57.

  The inner cover 51 covers the rear part of the head pipe 16, the upper part of the front fork 25, the front parts of the front upper frame 17 and the front lower frame 19, and the radiator 29. The both sides of the front cover 50 and the inner cover 51 that are combined and integrated constitute the leg shield 14. The lower rear surface 74 of the leg shield 14 is connected to the front edge of the foot board 15. The lower portions of the front cover 50 and the inner cover 51 cover the radiator 29.

  FIG. 5 is an enlarged left side view of the rear part of the scooter type vehicle of FIG. FIG. 6 is a perspective view of the rear part of the vehicle as viewed obliquely from the left rear. As shown in FIGS. 1 to 6, the center cover 52 covers the rear portions of the front upper frame 17 and the front lower frame 19, the upper frame 18, the front portions of the lower frame 20, the article storage box 27, and the like. The rear cover 53 covers the bridge frame 21, the seat pillar 22, the upper part of the fuel tank 28, the rear cushion unit 42, and the engine 32.

  The rear cowling 54 covers the upper end portion of the seat pillar 22 and the air cleaner 45. At least a part of the rear cowling 54 that overlaps the rear wheel 40 in plan view is formed with a notch 55 that is cut out from the rear end edge of the rear cowling 54 toward the front of the vehicle. The front end position of the notch 55 is set to the same position as the axle 40a of the rear wheel 40 or a position ahead of the axle 40a in a side view.

  The footboard 15 covers the footboard frame 23 excluding the front end portion, and is supported by the footboard frame 23. Further, the under cover 56 covers the lower portion of the lower frame 20, the lower end portion of the bridge frame 21, the lower portion of the fuel tank 28, the link lever mechanism 41, the exhaust pipe 46, and the like.

  A front fender 58 that covers the upper portion of the front wheel 24 and a handle cover 59 that covers the handle bar 26 are attached to the front fork 25 so as to rotate together. The upper portion of the rear wheel 40 is covered by a rear fender 60, the power transmission device 38 housed in the power transmission case is covered by a power transmission case cover 61, and the exhaust muffler 47 is covered by a muffler cover 62 (FIG. 4).

  The lower end portions on both sides of the rear fender 60 covering the upper part of the rear wheel 40 are respectively connected to either the power transmission case or the power transmission case cover 61 covering the rear wheel 40 and the rear swing arm 49 or the exhaust muffler 47. It is attached.

  Further, in front of the rear fender 60, the front part of the rear fender 60 and the rear part of the rear cover 53 overlap in a side view with a pair of left and right rear covers 53 extending in the front-rear direction of the vehicle below the rear cowling 54. A protruding portion 53a is formed to cover the portion.

  As shown in FIGS. 1 and 3, a side stand 63 is disposed on one side (for example, the left side) in the vehicle width direction at the position where the under cover 56 is disposed. The side stand 63 is pivotally supported by using a side stand bracket 64 fixed to the lower frame 20 on one side (for example, the left side) in the vehicle width direction. Similarly, a center stand 65 is disposed behind the side stand 63 at the position where the under cover 56 is disposed. The center stand 65 is pivotally supported using a center stand bracket 66 fixed to the bottom of the bridge frame 21 as a pair.

  A headlight 67 is installed on the front cover 50, and a vehicle width lamp 68 and a direction indicator lamp 69 are arranged close to both sides of the headlight 67. Further, a brake lamp 70 is installed near the front end of the notch 55 and above the front end of the notch 55.

  The side portions of the rear cowling 54 located on both the left and right sides of the notch 55 are formed in a substantially triangular shape having an acute apex 54a projecting rearward in a side view, and the vehicle width lamp 71 and the vicinity of the acute apex 54a are formed. A direction indicator lamp 72 is arranged in close proximity. Reference numeral 73 denotes a grab bar.

  In the inner cover 51, the center cover 52, and the rear cover 53, an area from the lower part of the substantially front end of the seat 13 to the lower part of the front inner cover 51 is provided between the pair of footboards 15 in the vehicle width direction and the footboard 15. Between the lower rear surfaces 74 of both leg shields 14 continuous with the front ends of the two, the center tunnel 76 is formed by bulging upward. In the center tunnel 76, the article storage box 27 is disposed on the front side, and the fuel tank 28 is disposed on the rear side. The fuel tank 28 is disposed in a range between a rear side of the center tunnel 76 and a space between the pair of under covers 56 communicating with the rear side.

  As shown in FIG. 3, the fuel tank 28 has a rear portion that bulges upward and has a substantially trapezoidal shape with a high rear portion in a side view, and the upper surface of the portion extending from the front end of the fuel tank 28 to the rear portion is lowered forward. In this case, a large mutual capacity is ensured while avoiding interference with the rear portion 82B of the bottom surface 82 of the article storage box 27. Thereafter, the fuel injection pipe 43 is connected to the upper part. As described above, the fuel injection pipe 43 extends obliquely rearward and upward toward the other side in the vehicle width direction (for example, the right side), and a fuel supply port 77 is formed at the tip of the fuel injection pipe 43. The fuel supply port 77 is provided substantially below the front end of the seat 13 on the other side of the pair of center covers 52 in the vehicle width direction, for example, the right center cover 52. A fuel lid 78 (FIG. 2) that covers the fuel supply port 77 is disposed in the right center cover 52.

  In the scooter type vehicle 10, the side stand 63 is disposed on the opposite side of the side where the fuel supply port 77 and the fuel lid 78 are provided, for example, at the position of the left under cover 56. The side stand 63 is pivotally supported by the lower frame 20 as described above.

  Similarly, an operation lever of a parking brake, that is, a parking brake lever 79 for fixing the rear wheel 40 to be non-rotatable at the time of parking is provided on the opposite side of the side where the fuel supply port 77 and the fuel lid 78 are provided, for example, the left center cover 52. Be placed. The parking brake lever 79 is provided at a position below the substantially front end portion of the seat 13 in the left center cover 52. Therefore, the parking brake lever 79 is parked using the side stand 63, and is positioned at a low position when the scooter type vehicle 10 is tilted close to the ground or floor surface. The mouth 77 and the fuel lid 78 will be positioned in a high position.

  The article storage box 27 is configured to store articles such as a helmet (not shown). The rear portion 82B of the bottom surface 82 of the article storage box 27 is formed to be inclined rearward and upward together with the upper surface of the fuel tank 28. The article storage box 27 and the fuel tank 28 are arranged close to each other so that the rear portion 82B of the bottom surface 82 of the article storage box 27 and the upper surface of the fuel tank 28 overlap in the vehicle front-rear direction in plan view. Further, the front portion 82 </ b> A of the bottom surface 82 of the article storage box 27 is formed to be inclined forward and upward along the front lower frame 19. As a result, the bottom surface 82 of the article storage box 27 is configured such that the boundary portion between the front portion 82A and the rear portion 82B is formed deepest so that the helmet can be stored with its top portion facing forward and downward.

  Further, the radiator 29 is disposed below the front portion 82 </ b> A of the bottom surface 82 in the article storage box 27. As a result, an air guide path through which traveling wind is guided from the front portion 82 </ b> A of the bottom surface 82 toward the radiator 29 is configured.

  The article storage box 27 includes an opening / closing lid 84 that opens and closes an opening 83 at the top thereof. The opening / closing lid 84 is pivotally supported using a rotation shaft (not shown), and this rotation shaft is located on one side (for example, the left side), which is one side in the vehicle width direction, on the front upper side. It is installed at an inclination. That is, the rotation shaft is installed on the same side as the side stand 63 in the vehicle width direction.

  Next, the operation of this embodiment will be described.

  FIG. 7 is another enlarged left side view of the rear part of the scooter type vehicle of FIG. 1, and FIG. 8 is another perspective view of the rear part of the vehicle as viewed from the left rear side. Shows the rocked state.

  As shown in FIGS. 7 and 8, a rear cowling 54 that covers the lower part of the rear portion of the seat 13 from the periphery is provided, and at least a part of the rear cowling 54 that overlaps the rear wheel 40 in a plan view is provided at the rear of the rear cowling 54. A notch portion 55 is formed that is notched from the edge toward the front of the vehicle, and the front end position of the notch portion 55 is set to the same position as the axle 40a of the rear wheel 40 or a position ahead of the axle 40a in a side view. As a result, the rear cowling 54 and the seat 13 can be arranged low while preventing interference between the rear wheel 40 or the rear fender 60 covering the rear wheel 40 and the rear cowling 54 when the rear wheel 40 swings.

  In addition, since the article storage box 27 is disposed in the center tunnel 76, it is not necessary to secure the space below the seat 13 as a storage space. In addition to being connected to the center of gravity, the difference in the seat 13 seating surface between the driver and the passenger is reduced, so that the positions of the center of gravity approach each other when two people are seated, and the running stability is significantly increased. Furthermore, an increase in the rear overhang can be avoided while realizing a low seat 13 height, so that mass can be concentrated, and in particular, turning performance is improved.

  Furthermore, since the increase in the vehicle weight and the increase in the overall length of the vehicle can be prevented, the maneuverability when pushing the vehicle is also good. Further, since the rear overhang is small, the strength of the rear cowling 54 can be sufficiently ensured, and the vibration of the rear cowling 54 during high speed traveling can be greatly reduced.

  Further, since the brake light 70 is disposed near the front end of the notch 55 and above the front end of the notch 55, the brake light 70 is not hidden by the upper part of the rear wheel 40 or the rear fender 60 when the rear wheel 40 swings. The visibility from the following vehicle can always be kept good. Further, as a part positioned below the brake light 70, a part having a curved surface with a large curvature (for example, the upper part of the rear wheel 40 or the rear fender 60) can be easily reflected and the light emitted from the brake light 70 can be easily reflected from the following vehicle. Visibility can be further improved.

  Furthermore, the side portions of the rear cowling 54 located on the left and right sides of the notch 55 are formed in a substantially triangular shape having an acute apex 54a protruding rearward in a side view, and a direction is indicated in the vicinity of the acute apex 54a. By providing the lamp 72, the rear cowling 54 portion does not exist above and below the direction indicator lamp 72 in the height direction. As a result, the visibility from the periphery (particularly the side) of the direction indicator lamp 72 is good even when the vehicle is turned down, such as when turning.

  Further, since the rear wheel 40 is exposed because the notch 55 is formed in the rear cowling 54, a power transmission device that transmits the power of the engine 32 to the rear wheel 40 on one side in the vehicle width direction of the rear wheel 40. 38 is housed in the power transmission case, and a rear swing arm 49 that supports the rear wheel 40 and an exhaust muffler 47 that constitutes an engine exhaust system are disposed on the other side in the vehicle width direction of the rear wheel 40. On the other hand, lower end portions on both sides of the rear fender 60 covering the upper part of the rear wheel 40 are attached to either the power transmission case or the power transmission case cover 61 covering the rear fender 60 and the rear swing arm 49 or the exhaust muffler 47, respectively. As a result, the rear portion of the vehicle body can be protected from muddy water and stepping stones that jump from the rear wheel 40. In particular, since the rear fender 60, the power transmission case cover 61, and the exhaust muffler 47 can cover the upper portion of the rear wheel 40 over a wide range, water splashes and flying stones can be prevented more effectively.

  A pair of left and right rear covers 53 extending in the front-rear direction of the vehicle are disposed below the rear cowling 54. The rear cover 53 includes a front portion of the rear fender 60 and a rear portion of the rear cover 53 in a side view. Since the overhanging portion 53a that covers the front portion of the rear fender 60 is formed so as to overlap with each other, the rear fender 60 moves upward along with the swinging of the rear wheel 40 and is surrounded by the rear fender 60, the rear cover 53, and the rear cowling 54 below the seat 13. The hot air in the remaining space can be discharged rearward from the cutout portion 55. The cutout portion 55 communicates with the upper portion in the space, and can further enhance the effect of discharging hot air that tends to stay in high places. Further, since the protruding portion 53a provided on the rear cover 53 overlaps the front portion of the rear fender 60, the air pushed by the upward movement of the rear fender 60 is effectively discharged from the cutout portion 55 without escaping to the side.

1 is an overall left side view of a scooter type vehicle showing an embodiment of a rear body structure of a scooter type vehicle according to the present invention. FIG. 2 is an overall plan view of the scooter type vehicle of FIG. 1. The left view which abbreviate | omits the vehicle body cover etc. of the scooter type vehicle of FIG. FIG. 2 is an enlarged right side view of a rear portion of the scooter type vehicle in FIG. 1. The enlarged left view of the rear part of the scooter type vehicle of FIG. The perspective view which looked at the vehicle rear part from diagonally left back. FIG. 2 is an enlarged left side view of the rear portion of the scooter type vehicle of FIG. 1 with the rear wheel swinging upward. The perspective view which looked at the vehicle rear part from the diagonally left back in the state in which the rear wheel rocked upward.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Scooter type vehicle 13 Seat 32 Engine 38 Power transmission device 40 Rear wheel 40a Rear wheel axle 49 Rear swing arm 53 Rear cover 53a Rear cover overhanging part 54 Rear cowling 54a Sharp corner top part 55 Notch part 57 Exhaust muffler 60 Rear fender 61 Power transmission case Cover 70 Brake light 72 Direction indicator light

Claims (5)

A seat, a rear cowling that covers the lower part of the rear of the seat from the periphery, a rear wheel that is swingable in the vehicle height direction, and a rear fender that covers the upper part of the rear wheel and swings integrally with the rear wheel. In the scooter type vehicle, the rear cowling that overlaps the rear wheel in a plan view is formed with a notch that cuts out from the rear edge of the rear cowling toward the front of the vehicle. By setting the front end position of the notch to the same position as the axle of the rear wheel or a position ahead of the axle , interference between the rear fender and the rear cowling that covers the rear wheel or the rear wheel when the rear wheel swings rear vehicle body structure of the scooter type vehicle, characterized in that to prevent. The rear body structure of a scooter type vehicle according to claim 1, wherein a brake light is disposed in the vicinity of the front end of the notch and above the front end of the notch. The side portions of the rear cowling located on the left and right sides of the notch are formed in a substantially triangular shape having an acute apex protruding rearward in a side view, and a direction indicator lamp is provided in the vicinity of the acute apex. The rear body structure of the scooter type vehicle according to claim 1 or 2. A power transmission device that transmits engine power to the rear wheel is disposed on one side in the vehicle width direction of the rear wheel and housed in a power transmission case, and on the other side in the vehicle width direction of the rear wheel. The rear swing arm that supports the rear wheel and the exhaust muffler that constitutes the engine exhaust system are disposed, and the lower end portions on both sides of the rear fender are connected to either the power transmission case or the power transmission case cover that covers the rear fender. The rear vehicle body structure of a scooter type vehicle according to claim 1, attached to either the rear swing arm or the exhaust muffler. A pair of left and right rear covers extending in the front-rear direction of the vehicle is disposed below the rear cowling, and the front portion of the rear fender and the rear portion of the rear cover overlap the rear cover in a side view. 5. The rear vehicle body structure of a scooter type vehicle according to claim 4, wherein an overhanging portion for covering the front portion of the rear fender is formed.

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