JP5664492B2 - Saddle riding vehicle - Google Patents

Description

  The present invention relates to a straddle-type vehicle such as a scooter-type motorcycle having a swing-type power unit that supports rear wheels.

  As a saddle-ride type vehicle, for example, Patent Document 1 includes a swing type power unit in which an engine, a conduction case on the left side of the engine, an air cleaner above the engine, and the like are integrally swingable. A scooter type motorcycle having a rear wheel supported at the rear end is disclosed. In Patent Document 1, an upper waterproof flap is provided at one end of the fender, and the upper waterproof flap is disposed with a lower end portion thereof close to or in contact with the middle of the air cleaner cover, and dust from the rear wheel side. Discloses a configuration in which the air cleaner and the engine are prevented from entering.

Republished No. 2004-078573

  However, the mudguard (upper waterproof flap as referred to in Patent Document 1) may swing back and forth due to vibration during traveling. When the swing power unit swings upward, the upper surface of the air cleaner comes into strong contact with the lower end of the mud guard and curves so that the lower end of the mud guard warps. Conversely, when the swing power unit swings downward The warping of the lower end portion of the mud guard is alleviated as the upper surface of the air cleaner tends to move away from the lower end portion of the mud guard. Due to such a behavior of the mud guard, if mud or the like is accumulated on the upper surface of the air cleaner, the mud or the like may be splashed up.

  Moreover, in patent document 1, the inclined surface which falls back is formed in the rear part of an air cleaner, and it has the form which the lower end part of a mud guard contacts the inclined surface. Therefore, if the lower end of the mudguard is in contact with the inclined surface, the mudguard is restricted from moving forward. However, since the air cleaner is required to have a large capacity in order to obtain a high output of the engine, it may be difficult to secure an inclined surface that falls back in the air cleaner, and the shape of the air cleaner is limited.

  The present invention has been made in view of the above points, and an object thereof is to prevent splashing of mud and the like due to the behavior of the mudguard without being limited to the shape of the air cleaner.

A straddle-type vehicle body of the present invention includes a swing-type power unit including an engine that is swingably supported by a frame, and a rear wheel supported by the swing-type power unit in a space below a seating seat. An air cleaner which is disposed above the engine located in front of the rear wheel and swings up and down together with the swing type power unit, and hangs down toward an upper surface of the air cleaner in a space below the seating seat. A mud guard that is installed and extends in the vehicle width direction and a restricting portion that stands on the upper surface of the air cleaner and restricts the mud guard from moving forward are provided.
Another feature of the straddle-type vehicle according to the present invention is that a mud splash prevention rib that protrudes forward and extends in the vehicle width direction is provided on the front surface of the mudguard. .
Another feature of the saddle riding type vehicle according to the present invention is that the upper surface of the air cleaner extends in the vehicle width direction at a position where the lower edge of the mud guard that hangs down toward the upper surface of the air cleaner abuts. The existing groove is formed, and the upper surface of the air cleaner is inclined so as to be lowered to both sides or one side in the vehicle width direction, and the groove is also lowered accordingly. There is in point.

  According to the present invention, it is possible to prevent the mud and the like from jumping up due to the behavior of the mudguard without being limited to the shape of the air cleaner.

It is a perspective view which shows the rear part of the scooter type motorcycle which concerns on this embodiment. It is a figure which shows typically the structure in planar view of a swing type | mold power unit. It is a perspective view of a mud guard. It is a figure which shows a mud guard, (a) is a front view, (b) is a top view, (c) is a left view. It is a perspective view which shows the structure around a mud guard. It is side surface sectional drawing which shows the structure around a mud guard.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view showing a rear portion of a scooter type motorcycle that is a saddle riding type vehicle according to the present embodiment. In the present application, the front, rear, left, and right directions refer to directions viewed from the driver when riding the vehicle. In the scooter type motorcycle, although not specifically shown, the body frame includes a head pipe, a down tube extending downward from the head pipe, and extending substantially horizontally from the middle to the rear, and a down tube And left and right rear frames 1 extending rearward and upward from the rear end. Then, a footrest portion is formed by recessing downward between a handlebar (not shown) supported by the head pipe and a seating seat 2 provided on the left and right rear frames 1, so that it can run in a sitting style. ing. An article storage box and a fuel tank (not shown) are installed between the rear frames 1 and are covered with the seating seat 2.

  The vehicle body frame is covered with a resin vehicle body cover so that the appearance of the vehicle body is trimmed and the internal devices are protected. At the rear part of the vehicle, a frame cover front 3 and a frame cover rear 4 that cover the surroundings of the article storage box and the fuel tank below the seating seat 2 are attached. A rear fender 6 is attached so as to cover the rear of the rear wheel 5 from above.

  A swing-type power unit 8 is supported on the body frame via a swing shaft 7 so as to be swingable up and down, and a rear wheel 5 is rotatably supported at a rear end portion of the swing-type power unit 8. FIG. 2 is a diagram schematically showing the configuration of the swing type power unit 8 in plan view. In FIG. 2, front, rear, left, and right as viewed from the driver when riding the vehicle are indicated by Fr, Rr, L, and R, respectively.

  The swing type power unit 8 includes an engine 9 and a transmission that are integrated with each other, and the engine 9 is disposed in front of the rear wheel 5 in a space covered by the frame covers 3 and 4 below the seating seat 2 and the rear fender 6. Is placed. The engine 9 is arranged so that the cylinder assembly 9b extends forward in a substantially horizontal direction from the crankcase 9a toward the front. A conduction case 10 (not shown in FIG. 1) extends rearward from the left side of the engine 9, and the rotation output of the engine 9 is output by a V-belt drive type continuously variable transmission built in the conduction case 10. Is transmitted to the rear wheel 5. A rear cushion unit 11 is suspended between the rear frame 1 and the conduction case 10 of the swing type power unit 8 on the left side in the vehicle width direction of the rear wheel 5.

  An exhaust pipe 12 is connected to the exhaust port of the engine 9, and an exhaust muffler 13 is connected to the exhaust pipe 12. The exhaust muffler 13 extends rearward and obliquely upward on the right side of the rear wheel 5 in the vehicle width direction. The exhaust pipe 12 and the exhaust muffler 13 swing up and down together with the swing type power unit 8.

  Further, above the engine 9, a carburetor 14 and an air cleaner 16 connected to the carburetor 14 via a duct 15 are arranged side by side to constitute an intake system that supplies an air-fuel mixture to an intake port of the engine 9. The air cleaner 16 is divided into an air cleaner body 16a on the right side in the vehicle width direction and a cover 16b on the left side, and sucks air from an intake inlet (not shown) at the front of the cover 16b. The air sucked from the intake inlet is guided from the air cleaner body 16a to the carburetor 14 via a filter 17 (see FIG. 6) provided on the surface covered with the cover 16b of the air cleaner body 16a. The carburetor 14 and the air cleaner 16 swing up and down together with the swing type power unit 8.

  Here, the rear fender 6 extends rearward and obliquely downward from the vicinity of the rear end of the frame cover rear 4 between the rear fender front 6a extending between the left and right rear frames 1 in plan view. A rear fender rear 6b for preventing the jumping up. The rear fender front 6a is formed with a flat flange portion 6c having a concave cross section and extending outward in the vehicle width direction along the left and right upper edges, as indicated by a one-dot chain line in FIG.

  A thin plate-shaped mud guard 18 made of an elastic member such as rubber is attached to the rear fender front 6a. The mud guard 18 is installed so as to hang down toward the upper surface of the air cleaner 16 in the space below the seating seat 2 and extends in the vehicle width direction. The mud guard 18 prevents mud and the like (see arrow S in FIG. 1) splashed by the rear wheel 5 from entering the front side of the air cleaner 16 and the carburetor 14 side.

  Hereinafter, the mudguard 18 will be described in detail. 3 and 4 are diagrams showing the mud guard 18. 5 is a perspective view showing the periphery of the mud guard, FIG. 6 is a side cross-sectional view showing the periphery of the mud guard, and specifically, a side cross-sectional view of the air cleaner 16 at an intermediate position of the air cleaner body 16a.

  The upper edge of the mudguard 18 has a concave shape straddling the rear fender front 6a. That is, the upper edge of the mud guard 18 has an edge portion 19 extending left and right along the bottom surface of the rear fender front 6a and left and right edge portions 20 extending upward along the left and right surfaces of the rear fender front 6a. Flat flange portions 19a and 20a projecting rearward from the edge portions 19 and 20 are integrally formed. And the clip 21 is integrally molded by the two places of the flange part 19a, and the upper end surface of each flange part 20a. Holes are formed at corresponding positions on the bottom surface of the rear fender front 6a and the left and right flange portions 6c, and the mudguard 18 is attached by pressing the clip 21 into each hole. The clip 21 is composed of a rod-like base 21a and a push-in portion 21b having a lower end disposed on the base 21a spreading in a skirt shape. After the push-in portion 21b is elastically deformed and pushed into the hole, the clip 21 is restricted. The

  The lower edge of the mud guard 18 contacts the upper surface of the air cleaner 16 when the swing type power unit 8 is at a predetermined swing position. Here, as shown in FIG. 2, the air cleaner 16 has a substantially deformed L shape in which only the left side in the vehicle width direction extends rearward in a plan view. In accordance with this, a hanging portion 22 is formed on the right side of the mud guard 18 in the vehicle width direction so as to hang down on the right side of the air cleaner 16 in the vehicle width direction.

  As described above, the air cleaner 16 is divided into the air cleaner body 16a and the cover 16b. As shown in FIG. 5, there are flange portions around the dividing surface of the air cleaner body 16a and around the dividing surface of the cover 16b. 16c and 16d are formed, and these flange portions 16c and 16d are brought into contact with each other and tightened with bolts to fix both. Left and right slits 23 are formed on the lower edge of the mud guard 18 corresponding to the abutting positions of the flange portions 16c and 16d. When the lower edge of the mud guard 18 abuts on the upper surface of the air cleaner 16, the portion between the slits 23 is formed. The flanges 16c and 16d are positioned so as to bend so as to escape before or after.

  Further, a mud splash prevention rib 24 protruding forward and extending in the vehicle width direction is integrally formed on the front surface of the mud guard 18.

  On the other hand, as shown in FIG. 6, on the upper surface of the air cleaner 16, a restriction rib 25 is provided as a restriction portion that restricts the mud guard 18 that hangs down toward the upper surface of the air cleaner 16 from moving forward.

  Further, a concave groove portion 26 extending in the vehicle width direction is formed on the upper surface of the air cleaner 16 at a position where the lower edge of the mud guard 18 that hangs down toward the upper surface of the air cleaner 16 abuts. Since the lower edge of the mud guard 18 abuts the concave groove 26, the mud guard 18 is less likely to swing back and forth.

  Further, as can be seen from the cross-sectional view of FIG. 6, the upper surface of the air cleaner body 16a of the air cleaner 16 is inclined so as to be lowered to the right in the vehicle width direction, and the concave groove portion 26 is also formed to be lowered accordingly. Therefore, even if water accumulates in the recessed groove portion 26, the water flows out to the side of the air cleaner 16 along the recessed groove portion 26.

  In the scooter type motorcycle as described above, the mudguard 18 is restricted from moving forward by the restriction rib 25 on the upper surface of the air cleaner 16. If there is no restriction rib 25, the lower end of the mudguard 18 may swing back and forth due to vibration during traveling, in which case mud or the like accumulated on the upper surface of the air cleaner 16 is splashed by the mudguard 18, The air cleaner 16 will enter the front side of the intake inlet or the carburetor 14. By restricting the mud guard 18 from moving forward by the restriction rib 25, it is possible to prevent the mud and the like accumulated on the upper surface of the air cleaner 16 from being splashed up. In addition, the mud guard 18 is less likely to swing back and forth due to the lower edge of the mud guard 18 coming into contact with the concave groove 26.

  Further, as shown in FIG. 6, a space is formed in which the lower end portion of the mud guard 18 and the regulating rib 25 on the upper surface of the air cleaner 16 are opposed to each other. The mud splash preventing rib 24 of the mud guard 18 covers this space. It becomes the shape that becomes. When the swing type power unit 8 swings upward, the upper surface of the air cleaner 16 comes into strong contact with the lower edge of the mud guard 18 and the lower end portion of the mud guard 18 is bent so that the swing type power unit 8 is lowered. When swinging, the upper surface of the air cleaner 16 tends to be separated from the lower end portion of the mud guard 18, and the warpage of the lower end portion of the mud guard 18 is alleviated. Due to the behavior of the mud guard, mud or the like accumulated on the upper surface of the air cleaner 16 may be splashed upward. be able to.

  As mentioned above, although this invention was demonstrated with various embodiment, this invention is not limited only to these embodiment, A change etc. are possible within the scope of the present invention. For example, the shapes of the air cleaner 16 and the mud guard 18 are examples, and are not limited to those of the present embodiment.

  1: rear frame, 2: seating seat, 3: frame cover front, 4: frame cover rear, 5: rear wheel, 6: rear fender, 6a: rear fender front, 6b: rear fender rear, 6c: flange portion, 7: swing Shaft, 8: Swing type power unit, 9: Engine, 9a: Crankcase, 9b: Cylinder assembly, 10: Conduction case, 11: Rear cushion unit, 12: Exhaust pipe, 13: Exhaust muffler, 14: Carburetor, 15: Duct, 16: Air cleaner, 16a: Air cleaner body, 16b: Cover, 16c, 16d: Flange, 17: Filter, 18: Mudguard, 19: Side, 19a: Flange, 20: Side, 20a: Flange, 21: Clip, 21a: Base, 21b: Push-in part, 22: Hanging part, 23: Slit, 4: mud splashing preventive rib, 25: restricting rib, 26: concave groove

Claims (4)

A swing-type power unit including an engine that is swingably supported by a body frame;
A rear wheel supported by the swing-type power unit in a space below the seating seat;
An air cleaner disposed above the engine located in front of the rear wheel and swinging up and down together with the swing power unit;
A mud guard installed in a space below the seating seat so as to hang down toward the upper surface of the air cleaner, and extending in the vehicle width direction;
A straddle-type vehicle, comprising: a restricting portion that stands on an upper surface of the air cleaner and restricts the mudguard from moving forward.   The straddle-type vehicle according to claim 1, wherein a rib for preventing mud splashing is provided on a front surface of the mudguard so as to protrude forward and extend in a vehicle width direction.   2. A concave groove portion extending in a vehicle width direction is formed on the upper surface of the air cleaner at a position where a lower edge of the mud guard that hangs down toward the upper surface of the air cleaner contacts. The saddle riding type vehicle according to 2.   The straddle-type vehicle according to claim 3, wherein an upper surface of the air cleaner is inclined so as to be lowered to both sides or any one side in the vehicle width direction, and the concave groove portion is also lowered accordingly.

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