JP2006111086A - Motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motorcycle with a rear fender capable of preventing splashes of slurry and facilitating ensuring a space for attaching/detaching a rear wheel. <P>SOLUTION: A scooter type motorcycle integrally includes a vehicle body frame 100, the rear wheel 2, an engine 11, a power unit 10 which is integrally provided with a power transmitting device 12 for transmitting the power to the rear wheel 2 and supporting the rear wheel 2, and which is connected with the vehicle body frame 100 with a pivot P on more forward side than an axis 2A of the rear wheel 2 centered so as to be oscillated freely, and the rear fender 250 which covers an outer periphery portion of the rear wheel 2. A hinge joint portion 200 is attached at an air cleaner 14 disposed at an upper portion of the power unit 10. The rear fender 250 can select a usage position for covering the outer periphery of the rear wheel 2 and a retraction position for avoiding interference with the rear wheel 2 attached/detached to/from the axis 2A by rotating with the hinge joint portion 200 the reference. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a motorcycle, and more particularly, to a rear fender of a motorcycle including a power unit that is swingably connected to a vehicle body frame.

Conventionally, in the case of a scooter type motorcycle equipped with a power unit that is swingably connected to a body frame, the periphery of the rear wheel is usually largely covered by a body cover that covers the body frame, and dare to the inside Few rear fenders were provided to cover the outer periphery of the rear wheel.
However, in the case of a motorcycle in which the engine intake system (carburetor or air cleaner) is placed on a power unit located near the front upper part of the rear wheel, the body cover must be installed to prevent splashing of muddy water into the intake system. A rear fender that swings together with the power unit is attached inside (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 62-15116

By the way, when a separate rear fender is provided inside the vehicle body cover as described above, the rear fender is generally fixed to a fixing portion on the power unit side that swings with the rear wheel by a fixing member such as a bolt. Is.
Therefore, when exchanging the tires of the rear wheels, the rear fender fixing member covering the rear wheels must be removed, and the rear fenders must be removed from the power unit before the rear wheels are removed.

For example, in the case of a relatively small motorcycle, the rear fender is not large, and the covers disposed around it are light and small, so that the rear fender can be easily removed.
However, in the case of a large scooter type motorcycle, since the rear fender itself and surrounding members are large and heavy, it is not easy to completely remove the rear fender, and it is difficult to attach and detach the rear wheel.

  Accordingly, an object of the present invention is to solve the above-mentioned problems, and to provide a motorcycle equipped with a rear fender that prevents jumping of muddy water and easily secures a space for attaching and detaching a rear wheel. .

  The above-mentioned object of the present invention is integrally provided with a vehicle body frame, a rear wheel, an engine, and a power transmission device that transmits the power to the rear wheel and supports the rear wheel, and is located in front of the axle of the rear wheel. A motorcycle including a power unit swingably connected to the vehicle body frame about a swing support point on a side, and a rear fender that covers an outer peripheral portion of the rear wheel, the vehicle having a hinge coupling portion attached thereto The rear fender can be selected from a use position that covers the outer periphery of the rear wheel and a retreat position that avoids interference with the rear wheel that is attached to and detached from the axle by rotating with respect to the hinge coupling portion. It is achieved by a motorcycle characterized by the following.

  According to the motorcycle having the above-described configuration, the rear fender can be rotated between the use position and the retracted position with respect to the vehicle by the hinge coupling portion. Therefore, the rear fender can be rotated only to the retracted position without completely removing the rear fender. Thus, a space for attaching and detaching the rear wheel can be easily secured. Further, after the work, if the rear fender is rotated to the use position, it can be easily returned to the original normal use state, and jumping of muddy water can be prevented.

In the motorcycle having the above-described configuration, it is desirable that the hinge coupling portion is arranged extending in the vehicle width direction.
According to the above configuration, since the rear fender can be rotated in the front-rear direction with reference to the hinge coupling portion, the rotation space in the vehicle width direction of the rear fender can be reduced.
Further, it is desirable that the hinge coupling portion is disposed at the same position as the rear wheel in the vehicle width direction.
According to the said structure, the rotation space of the vehicle width direction of a rear fender can be made small.

In the motorcycle configured as described above, preferably, an air cleaner connected to the engine is provided above the power unit, and the hinge coupling portion is provided in a case of the air cleaner.
According to the said structure, a hinge coupling | bond part can be integrally molded with a synthetic resin similarly to the case of an air cleaner, and an increase in cost can be suppressed.

  In addition, since the hinge coupling portion serving as a pivotal fulcrum of the rear fender is provided in the case of the air cleaner, the gap between the case and the rear fender can be made extremely small. Therefore, the muddy water or the like splashed forward of the rear wheel upper part by the rotation of the rear wheel does not hit the air cleaner disposed above the power unit, and a sufficient mud prevention effect can be obtained.

In the motorcycle configured as described above, it is preferable that an air suction port of the air cleaner is provided on a wall surface of the case facing away from the hinge coupling portion.
According to the above configuration, since the air suction port of the air cleaner is provided on the wall surface (for example, the front wall surface) of the case facing away from the hinge coupling portion, even if muddy water leaks from a slight gap in the hinge coupling portion. However, there is no risk of reaching the air inlet.

In the motorcycle configured as described above, the rear fender is preferably covered with a vehicle body cover that covers the vehicle body frame.
According to the above configuration, even when the rear part of the vehicle including the rear fender is covered by the vehicle body cover, the rear fender can be rotated to the retracted position with the hinge coupling part as a fulcrum. For example, it is possible to easily secure the rear wheel desorption space.

Furthermore, the motorcycle having the above-described configuration preferably includes a temporary fixing mechanism that allows the rear fender to be temporarily fixed at the retracted position, and the temporary fixing mechanism is preferably provided on the vehicle body cover.
According to the above configuration, when the rear fender is rotated to the retracted position with the hinge coupling portion as a pivot, the rear fender can be temporarily fixed by the temporary fixing mechanism. For example, the rear fender can be retracted with one hand. There is no need to support the position, and the rear wheel can be attached and detached with both hands.

Furthermore, in the motorcycle configured as described above, it is preferable that the temporary fixing mechanism includes a hook that is provided at a rear end of a trunk included in the vehicle body cover and that engages a rotation side end portion of the rear fender.
According to the above configuration, when the rear fender is rotated to the retracted position, the rotating side end can be locked with the hook, so there is no need to support the rear fender at the retracted position with one hand and the rear with both hands. The ring can be attached and detached.

The motorcycle having the above-described configuration further includes a fixing mechanism that fixes the rear fender to the use position, and the fixing mechanism is disposed on the right side of the rear part of the vehicle body and is fixed to a rear arm that connects the engine and the rear wheel. desirable.
According to the above configuration, the rear fender can be securely fixed to the vehicle body side during use.

  Further, in the motorcycle having the above-described configuration, the motorcycle includes a pair of rear suspension units disposed on the left and right sides of the rear wheel, one end attached to the rear wheel side and the other end attached to the vehicle body frame, A first rear suspension unit disposed on the power unit side, and a second rear suspension unit disposed on the opposite side of the rear wheel, the second rear suspension unit being attached to the vehicle body frame. It is desirable that the mounting height is set such that the mounting height of the first rear suspension unit to the vehicle body frame is higher than the mounting height of the second rear suspension unit.

According to the motorcycle having the above configuration, the mounting height of the second rear suspension unit disposed on the side opposite to the side on which the power unit is disposed to the vehicle body frame is such that the vehicle body of the first rear suspension unit on the side on which the power unit is disposed. Since it is disposed higher than the mounting height to the frame, it is easy to secure a working space when rear wheels are exchanged on the side opposite to the power unit. That is, if the lower end of the second rear suspension unit on the side opposite to the power unit is disconnected and slightly lifted, the rear wheel replacement space can be easily secured.
For this reason, even if the whole rear wheel periphery is covered with a vehicle body cover like a large scooter, the rear wheel replacement operation can be easily performed without removing the vehicle body cover greatly. This contributes to the improvement of workability at the time of rear wheel replacement, as well as securing the rear wheel attachment / detachment space by rotating the rear fender to the retracted position as described above.

According to the motorcycle of the present invention, since the rear fender can be rotated between the use position and the retracted position with respect to the vehicle by the hinge coupling portion, the rear fender is only rotated to the retracted position without completely removing the rear fender. Thus, a space for attaching and detaching the rear wheel can be easily secured. Further, after the work, if the rear fender is rotated to the use position, it can be easily returned to the original use state, and jumping of muddy water can be prevented.
Therefore, it is possible to provide a motorcycle including a rear fender that prevents jumping of muddy water and easily securing a space when the rear wheel is attached and detached.

Hereinafter, a motorcycle according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a left side view of an external appearance of a scooter type motorcycle that is a motorcycle according to an embodiment of the present invention, FIG. 2 is a left side view showing an internal structure of the motorcycle shown in FIG. 1, and FIG. FIG. 4 is a schematic perspective view of the rear fender mounting portion of the motorcycle shown in FIG. 1 as viewed from the upper left oblique rear side, and FIG. 5 is a rear fender mounting portion shown in FIG. FIG. 6 and FIG. 7 are explanatory diagrams for explaining the configuration of the hinge connecting portion of the rear fender, FIG. 8 is a right side view of the rear fender mounting portion, and FIG. 9 is a state where the rear fender is removed and rotated to the retracted position. FIG. 10 is a left side view showing a temporary fixing mechanism that enables temporary fixing in a state where the rear fender is rotated to the retracted position.

As shown in FIGS. 1 to 3, the scooter type motorcycle (motorcycle) of the present embodiment transmits a body frame 100, a rear wheel 2, an engine 11, and its power to the rear wheel 2 and the rear wheel. 2 is a unit swing type power unit that is integrally provided with a power transmission device 12 that supports the vehicle body 2 and is pivotally connected to the vehicle body frame 100 around a pivot (swing fulcrum) P on the front side of the axle 2A of the rear wheel 2. 10 and a rear fender 250 that covers the outer periphery of the rear wheel 2, a front wheel 1 at the front part of the vehicle body, a rear wheel 2 at the rear part, and an upper part between the front and rear wheels 1, 2 for two persons. The front wheel 1 is suspended from the lower end of the front fork 5 that is steered by the bar handle 4.
Further, a floor portion 6 on which a passenger puts his / her foot between the front portion of the vehicle body and the seat 3 is provided, and a vehicle body cover 20 that covers the rear portion of the vehicle body frame 100 is provided behind the floor portion 6. Is provided with a rear fender 250 covering the outer periphery of the upper half of the rear wheel 2.

  As shown in FIGS. 2 and 3, a power unit 10 is provided below the seat 3 via a pivot P supported by the vehicle body frame 100 so as to be swingable in the vertical direction. The rear wheel 2 is rotatably supported via the axle 2A between the rear end portion of the rear arm 18 that is disposed on the right side of the rear portion of the vehicle and the power unit 10 that is disposed and fixed to the power unit 10, and the power unit 10 and A pair of left and right first and second rear suspension units 7L and 7R are connected between each rear end of the rear arm 18 and the rear end bracket 110 of the vehicle body frame 100, so that the rear wheel is pivoted about the pivot P as a swing fulcrum. A unit swing type rear wheel suspension structure that supports 2 in a swingable manner up and down is configured. The rear arm 18 is on the side opposite to the power unit 10 and swings together with the power unit 10 to support both the axle 2A of the rear wheel 2 together with the power unit 10.

  The power unit 10 includes a water-cooled engine 11 positioned on the front side and a power transmission device 12 positioned on the rear side. The power unit 10 has a posture in which the cylinder head 11a of the engine 11 is tilted forward at a large angle and is connected to the vehicle body via the pivot P. It is supported by the frame 100. The pivot P is disposed at a position substantially above the crankshaft at a substantially intermediate position in the vehicle body longitudinal direction of the power unit 10 and is located near the center of gravity G of the power unit 10 in the vehicle longitudinal direction. The engine 11 is arranged in a shape extending to the left and right of the vehicle body, and the front end of the rear arm 18 is detachably connected to the rear end of the engine portion of the power unit 10 with two bolts as shown in FIG.

  A throttle body 13 is disposed on the upper side of the engine 11, and an air cleaner 14 is disposed on the rear side of the pivot P. Further, as shown in FIG. 4, a rear fender 250 is disposed on the rear side of the air cleaner 14. Further, an elliptical cylindrical muffler 30 having a front end connected to the exhaust pipe 31 of the engine 11 is disposed along the rear arm 18 on the right side of the rear wheel 2.

  The throttle body 13, the air cleaner 14, the muffler 30 and the rear fender 250 swing together with the power unit 10. In addition, the muffler 30 extending linearly rearward is disposed substantially horizontally at the height of the axle 2A of the rear wheel 2, as shown in FIG. Further, a rear wheel disc brake 40 is disposed on the side where the rear arm 18 is provided.

  In addition, two storage boxes 91 and 92 are arranged at the lower side of the seat 3 for two-seaters, with the installation space for the throttle body 13 as a boundary. The front storage box 91 is a large-capacity box mainly used for storing a helmet, and is positioned on the front side of the cylinder head 11a and disposed immediately below the front seat 3F. The rear storage box 92 is a medium-capacity box for mainly storing maps, magazines, and the like, and is disposed directly above the rear seat 3R above the air cleaner 14. As described above, since the air cleaner 14 swings up and down together with the rear wheel 2 and the power unit 10, a predetermined swing space is secured between the rear storage box 92 and the air cleaner 14.

  These storage boxes 91 and 92 are open at the top by lifting the seat 3 with the hinge 3H (see FIG. 2) at the front end as a fulcrum. In addition to the storage boxes 91 and 92, a trunk box 93 is provided at the rear end of the vehicle body. The trunk box 93 is disposed on the rear side of the rear seat 3 </ b> R, and is located obliquely above the rear side of the rear wheel 2.

  Since the rear wheel 2 and the rear fender 250 swing up and down together with the power unit 10, a predetermined swing space is also secured between the trunk box 93 and the rear fender 250. In addition, a curved surface 93 a along the curve of the rear fender 250 is provided on the bottom surface of the trunk box 93 in order to secure the swing space.

  As shown in FIGS. 4 and 5, the rear fender 250 of the present embodiment is opposed to the air cleaner 14 disposed above the power unit 10 that is a part of the vehicle, with the hinge coupling portion 200 positioned at the front end as a pivot point. A use position (illustrated by a solid line) where the peripheral wall portion 250a and the side wall portion 250b cover the outer peripheral portion of the rear wheel 2, and the side wall portion 250b is lifted upward as indicated by an arrow A so that the side wall portion 250b is A retraction position (illustrated by a two-dot chain line in FIG. 4) that avoids interference with the rear wheel 2 that is attached to and detached from 2A is selectably attached.

  In addition to the hinge coupling portion 200, two fixing portions for fixing the rear fender 250 at the use position are provided, one on each of the left and right sides. The left and right fixing parts 251 and 252 (see FIGS. 5 and 8) other than the hinge connecting part 200 are detachably connected to the opposite member by bolts (fixing members) 261 and 262, respectively. By loosening the bolts 261 and 262, the fixation can be removed.

  As shown in FIGS. 4 and 5, the fixing portion 251 on the left side of the rear wheel 2 is provided at a position on the inner peripheral side of the intermediate portion in the circumferential direction of the rear fender 250. In the fixing portion 251, the rear fender 250 is fixed to the bracket 271 that is bolted to the transmission case 10 </ b> D of the power unit 10 with the bolt 261. The bracket 271 also serves as a bracket for attaching the rear end portion of the air cleaner 14 to the power unit 10.

  Further, as shown in FIG. 8, the right fixed portion 252 of the rear wheel 2 is provided at an inner peripheral side position near the rear end of the rear fender 250. In the fixing portion 252, the rear fender 250 is fixed to the bracket 272 formed integrally with the rear end portion of the rear arm 18 with a bolt 262. Here, the fixing part 252 which is a fixing mechanism for fixing the rear fender 250 to the use position is disposed on the right side of the rear part of the vehicle body and is fixed to the rear arm 18 connecting the engine 11 and the rear wheel 2, so that the rear fender can be surely used. 250 can be fixed to the vehicle body.

  Therefore, if the bolts 261 and 262 of the left and right fixing portions 251 and 252 are removed, all the constraints other than the hinge coupling portion 200 on the front end side can be released. As shown in FIG. The hinge coupling portion 200 on the front end side can be freely lifted and rotated using the rotation fulcrum.

Next, the structure of the hinge coupling part 200 will be described in detail with reference mainly to FIGS.
As described above, the air cleaner 14 that is connected to the engine 11 and swings up and down together with the rear wheel 2 is disposed above the power unit 10 positioned above the front portion of the rear wheel 2. Therefore, the front end of the rear fender 250 is coupled to the rear end of the case 14a of the air cleaner 14 via a hinge coupling portion 200 that extends in the vehicle width direction and is disposed at the same position as the rear wheel 2.

  The case 14a of the air cleaner 14 is a molded product made of synthetic resin, and a mounting bracket 210 is integrally formed on the rear wall surface. The rear fender 250 is also integrally molded with a synthetic resin in a reverse U-shaped cross section having a peripheral wall portion 250a covering the outer peripheral portion of the rear wheel 2 and side wall portions 250b continuously provided on both left and right sides of the peripheral wall portion 250a. The front end bracket 220 is engaged with the mounting bracket 210 of the case 14a of the air cleaner 14 at the front end.

And as shown in FIG. 6, the hinge coupling | bond part 200 is comprised by the fitting of the axial part 214 and the hole part 222 which were each formed in both brackets 210 and 220. As shown in FIG. Specifically, of the two brackets 210 and 220, the mounting bracket 210 on the air cleaner 14 side is provided with two support plates 211 and 211 that are parallel to each other. A rib plate 212 is horizontally provided between them.
At the front end of the rib plate 212, two notched grooves 213 and 213 are provided apart from each other, and shaft portions 214 and 214 are provided so as to straddle the grooves 213 and 213. The rib plate 212 is thinner than the diameter dimension of the shaft portion 214 and serves as a notch insertion portion for inserting a notch 223 of the front end bracket 220 described later.

  On the other hand, on the front end bracket 220 on the rear fender 250 side, two mounting plates 221 and 221 project from the inside of the two supporting plates 211 and 211 described above. A hole 222 with a notch 223 is provided at each tip. The notch 223 opens to the front end side of the mounting plate 221, and the opening width is set to be narrower than the diameter of the hole 222 and slightly wider than the rib plate 212 of the mounting bracket 210.

When assembling, first, the notches 223 of the mounting plates 221 and 221 of the mounting bracket 210 on the rear fender 250 side are replaced with the ribs of the front end bracket 220 on the air cleaner 14 side as shown by the arrow B in FIG. After being inserted through the plate 212, the centers of the holes 222 and 222 of the mounting plates 221 and 221 are positioned on the axis lines of the shaft portions 214 and 214.
Next, in this state, the holes 222, 222 are slid onto the shafts 214, 214 along the direction of the arrow C in FIG. 7B, and the holes 222, 222 and the shafts 214, 214 are slid. Are fitted to each other to form a pivotable hinge coupling portion 200.

  Further, the air suction port 15 (see FIG. 2) of the air cleaner 14 to which the front end of the rear fender 250 is connected is provided on the front wall surface (wall surface) 14c of the case 14a facing away from the hinge coupling portion 200. Yes.

  Further, as shown in FIG. 10, at the lower end of the trunk 93 s included in the vehicle body cover 20, the rear fender 250 is lifted upward with the hinge coupling portion 200 as a pivotal fulcrum, and is set to a retracted position (shown by a two-dot chain line). At that time, a hook (temporary fixing mechanism) 280 is attached, which allows the rear lower edge 250t, which is the rotation side end of the rear fender 250, to be temporarily fixed at the retracted position. Of course, what fulfills the function of the hook 280 may be provided anywhere other than the above-mentioned place, and a temporary fixing mechanism other than the hook may be provided.

Next, the mounting structure of the first and second rear suspension units 7L and 7R will be described.
In the scooter type motorcycle according to the present embodiment, as shown in FIGS. 11 to 13, the rear wheel 2 is disposed on both the left and right sides, the lower end as one end is attached to the rear wheel 2 side, and the upper end as the other end is the body frame. A pair of first and second rear suspension units 7L and 7R attached to 100 are provided asymmetrically left and right. In other words, the left and right first and second rear suspension units 7L and 7R are arranged on the right side (counterpower unit 10 side) of the second rear suspension unit 7R on the right side (counter power unit 10 side) than the first rear suspension unit 7L on the left side (power unit 10 side). Is set so that the height of attachment to the body frame 100 is higher.

Specifically, the upper end of the first rear suspension unit 7L is rotatably connected to the left side of the rear end bracket 110 of the vehicle body frame 100, and the lower end rotates to the rear end of the transmission case 10D of the power unit 10. It is supported by being connected movably.
In contrast, the second rear suspension unit 7R has an upper end rotatably connected to the right side of the rear end bracket 110 of the vehicle body frame 100 and a lower end rotatably connected to the upper rear end of the rear arm 18. The upper end connection point 7Ra of the second rear suspension unit 7R with respect to the vehicle body frame 100 is set at a position higher than the upper end connection point 7La of the first rear suspension unit 7L with respect to the vehicle body frame 100. The lower end connection point 7Rb of the second rear suspension unit 7R with respect to the rear arm 18 is set at a position higher than the lower end connection point 7Lb of the first rear suspension unit 7L with respect to the transmission case 10D. An opening H (see FIG. 11) is provided.

In this case, from the relationship of using the first and second rear suspension units 7L, 7R having the same characteristics and the same dimensions (dimension L1 = L2 in FIG. 11), as shown in FIG. 14, the first rear suspension unit 7L The distance La from the upper end connection point 7La to the vehicle body frame 100 to the pivot P, which is the swing fulcrum of the power unit 10, and the upper end connection point 7La of the second rear suspension unit 7R to the vehicle body frame 100 to the pivot P of the power unit 10 The distance Ra is set equal.
Further, the distance Lb from the lower end connection point 7Lb of the first rear suspension unit 7L to the power unit 10 to the pivot P of the power unit 10, and the lower end connection point 7Rb of the second rear suspension unit 7R to the rear arm 18 from the lower end connection point 7Rb of the power unit 10 pivot P. Is set equal to the distance Rb.

  Further, the first and second rear suspension units 7L and 7R are asymmetrically arranged not only in the vertical direction but also in the horizontal direction with respect to the rear wheel 2 as shown in FIG. That is, the mounting position in the vehicle width direction (position indicated by the dimension SR in the figure) with respect to the rear wheel 2 of the second rear suspension unit 7R is the mounting position in the vehicle width direction with respect to the rear wheel 2 of the first rear suspension unit 7L (see FIG. It is set inside the position indicated by the dimension SL in the figure. That is, the dimension SR is smaller than the dimension SL.

  Therefore, since the second rear suspension unit 7R is not only shifted to the upper side of the first rear suspension unit 7L but also arranged closer to the inner side, the muffler 30 disposed on the side opposite to the power unit is further installed in the vehicle. It can be arranged close to the inner side in the width direction, and a merit in the design of the vehicle body cover 20 is also obtained. For example, by arranging the muffler 30 so as to be inside the vehicle width direction dimension of the vehicle body cover 20, the muffler 30 can be easily hidden by the vehicle body cover 20, so that a smart feeling with a low vehicle height can be obtained. .

  Further, by placing the muffler 30 inside in the vehicle width direction, the position of the center of gravity can be moved inward even if the weight related to the muffler is increased by disposing a catalyst or the like. In addition, the bank angle can be increased, and the distance between the vehicle body cover 20 and the muffler 30 that becomes high temperature can be increased, and the heat resistance of the vehicle body cover 20 can be improved.

  Further, the cross section of the muffler 30 is formed in a substantially elliptical shape, and the major axis 30a and the minor axis 30b are tilted so that the upper side of the major axis 30a of the substantially elliptical section faces the outside in the vehicle width direction. Since the muffler 30 is disposed below the rear suspension unit 7R, the bank angle can be increased while the capacity of the muffler 30 is increased.

Further, the muffler 30 has a substantially elliptical cross section, and is inclined such that the major axis 30a and the minor axis 30b are inclined so that the upper side of the major axis 30a of the substantially elliptical shape in the section faces the outside in the vehicle width direction. Thus, it is disposed below the second rear suspension unit 7R.
Therefore, it is possible to increase the bank angle while increasing the capacity of the muffler 30, and it is easy to dispose a catalyst as necessary.

  The vehicle body cover 20 that covers the rear portion of the vehicle body includes left and right side covers 21L and 21R and a rear cover 22 that includes a trunk box 93. The left and right side covers 21L and 21R are provided below the left and right sides of the seat 3 on which the occupant is seated, and the power unit 10 and the muffler 30 are disposed inside the dimensions of the side covers 21L and 21R in the vehicle width direction.

  Further, as shown in FIGS. 1 and 3, due to the cover design, the positions of the lower edges 21La and 21Ra of the side covers 21L and 21R are low enough to hide most of the power unit 10 and part of the muffler 30. When the muffler 30 swings up and down as the rear wheel 2 swings, at least the upper half of the muffler 30 enters above the lower end 21Ra of the side cover 21R. .

  In the scooter type motorcycle described above, when the vehicle travels by driving the engine 11 of the power unit 10, the power unit 10 and the rear arm 18 swing up and down around the pivot P together with the rear wheel 2. The left and right first and second rear suspension units 7L and 7R repeatedly expand and contract to effectively absorb and absorb the shock and vibration that the rear wheel 2 receives from the road surface, and follow the rear wheel 2 to the road surface. Let At this time, the throttle body 13, the air cleaner 14, and the rear fender 250 also swing up and down together with the rear wheel 2.

That is, according to the scooter type motorcycle of this embodiment, the following advantages can be obtained mainly during maintenance.
First, since the rear fender 250 can be rotated between the use position and the retracted position with respect to the power unit 10 by the hinge coupling portion 200 provided at the front end of the rear fender 250, the rear fender 250 is used when the tires of the rear wheel 2 are changed. Without removing the bolts 261 and 262 of the fixing portions 251 and 252 and completely lifting the rotating side end of the rear fender 250 with the hinge coupling portion 200 as a rotation fulcrum. Interference with the rear wheel 2 attached to and detached from 2A can be avoided, and a space for attaching and detaching the rear wheel 2 can be easily secured. In addition, after the work, the rear fender 250 can be rotated to the use position and fixed with the bolts 261 and 262 of the fixing portions 251 and 252 to easily return to the original normal use state. Therefore, the workability when the rear wheel 2 is detached is improved.

Further, since the hinge coupling portion 200 of the rear fender 250 is provided in the case 14a of the air cleaner 14 disposed above the power unit 10, the hinge coupling portion 200 is integrated with a synthetic resin in the same manner as the case 14a of the air cleaner 14. It can shape | mold and can suppress an increase in cost.
Further, by providing the hinge coupling portion 200 serving as a pivot point of the rear fender 250 in the case 14a of the air cleaner 14, the gap between the case 14a and the rear fender 250 can be made extremely small. Therefore, muddy water or the like splashed forward of the rear wheel upper part by the rotation of the rear wheel 2 does not hit the air cleaner 14 disposed above the power unit 10, and a sufficient mud-proof effect can be obtained.

  In addition, the hinge coupling portion 200 of this embodiment is provided with brackets 210 and 220 on both the case 14a of the air cleaner 14 and the rear fender 250, and the shaft portion 214 and the hole portion 222 formed on the brackets 210 and 220 are fitted to each other. Since it comprised, it is not necessary to use a metal shaft and a pin, the hinge coupling | bond part 200 can be comprised with resin entirely, and it can suppress an increase in cost.

  Further, when the hole 222 is fitted into the shaft part 214, it is not necessary to forcibly widen the notch 223 provided in the hole 222, and the notch 223 is inserted through the rib plate 212 corresponding to the notch insertion part. By simply sliding the mounting plates 221 and 221 laterally (in the axial direction of the shaft portion 214), the shaft portion 214 and the hole portion 222 can be smoothly fitted with one touch, and they are not easily detached.

  Further, since the air suction port 15 of the air cleaner 14 is provided on the front wall surface 14c of the case 14a facing away from the hinge coupling part 200, it is assumed that muddy water leaks from a slight gap in the hinge coupling part 200. However, there is no fear of reaching the air inlet 15.

Further, the rear part of the vehicle body including the rear fender 250 is covered by the vehicle body cover 20, but the rear fender 250 can be rotated to the retracted position with the hinge coupling part 200 as a fulcrum, so that the vehicle body cover 20 is not largely removed. In both cases, it is possible to easily secure the space for attaching and detaching the rear wheels 2 when changing tires.
Furthermore, since the front end of the rear fender 250 is coupled via the hinge coupling portion 200 that extends in the vehicle width direction and is disposed at the same position as the rear wheel 2, the rear fender 250 is moved in the front-rear direction based on the hinge coupling portion 200. If it can be rotated, the rotation space in the vehicle width direction can be reduced.

  Further, when the rear fender 250 is lifted upward (withdrawal position) with the hinge coupling portion 200 as a pivot point, the rear end lower edge 250t that is the pivot side end of the rear fender 250 is temporarily attached by the hook 280. Since it can be stopped, it is not necessary to support the rear fender 250 with one hand, and the wheel 2 can be attached and detached with both hands.

  Furthermore, in the scooter type motorcycle according to the present embodiment, a pair of first and second motors are disposed on the left and right sides of the rear wheel 2, the lower end is attached to the rear wheel 2 side, and the upper end is attached to the vehicle body frame 100 side. The rear suspension units 7L and 7R are asymmetrically arranged, and the mounting height of the second rear suspension unit 7R on the side opposite to the power unit 10 (right side) to the vehicle body frame 100 is the first height on the power unit 10 side (left side). Since the rear suspension unit 7L is set higher than the mounting height of the rear suspension unit 7L to the vehicle body frame 100, it is easy to secure a working space when rear wheels are exchanged on the side opposite to the power unit 10. That is, the rear wheel replacement space can be easily secured by removing the lower end connection (lower end connection point 7Rb) of the second rear suspension unit 7R on the side opposite to the power unit 10 and lifting it slightly.

For this reason, even if the entire periphery of the rear wheel 2 is covered with the vehicle body cover 20 as in the large scooter type motorcycle in the present embodiment, the rear wheel replacement work is performed without greatly removing the vehicle body cover 20. Can be easily performed.
Therefore, when exchanging tires, first the muffler 30 is removed, then the connection of the second rear suspension unit 7R to the rear arm 18 (lower end connection point 7Rb) is removed, the rear arm 18 is removed, and finally the fixing portion of the rear fender 250 If the fixing of 251 and 252 is removed, it is lifted lightly and stopped by the hook 280, the wheel 2 can be easily attached and detached without necessarily removing the rear cover 22 and the side cover 21R.

The configurations of the power unit, the rear fender, the air cleaner, the temporary fixing mechanism, the rear suspension unit, and the like according to the motorcycle of the present invention are not limited to the configurations of the above-described embodiments, and various configurations are possible based on the gist of the present invention. Of course, it can be taken.
For example, in the scooter type motorcycle of the above embodiment, the power unit 10 is disposed on the left side of the vehicle body and the muffler 30 is disposed on the right side.

  Further, in the above embodiment, the shaft 214 is provided in the mounting bracket 210 on the air cleaner 14 side, the hole 222 is provided in the front end bracket 220 on the rear fender 250 side, and the hinge coupling portion is formed by fitting the shaft 214 and the hole 222. Although an example in which 200 is configured is shown, the shaft portion 214 and the hole portion 222 may be provided in opposite brackets.

1 is an external left side view of a scooter type motorcycle that is a motorcycle according to an embodiment of the present invention. Fig. 2 is a left side view showing the internal structure of the motorcycle shown in Fig. 1. Fig. 2 is an external right side view of the motorcycle shown in Fig. 1. FIG. 2 is a schematic perspective view of a mounting portion of a rear fender in the motorcycle shown in FIG. It is a left view of the attachment part of the rear fender shown in FIG. It is explanatory drawing explaining the structure of the hinge coupling | bond part of a rear fender, (a) is a top view of an assembly state, (b) is a top view of the mounting bracket by the side of an air cleaner, (c) is the principal part of the front end bracket by the side of a rear fender It is a perspective view. It is explanatory drawing explaining the structure of the hinge coupling | bond part of a rear fender, (a) is a sectional side view for demonstrating operation at the time of fitting a shaft part and a hole, (b) demonstrates the following operation. FIG. It is a right view of a rear fender attachment part. It is a left view which shows the state which removed the fixation of the rear fender and rotated to the retracted position. It is a left view which shows the temporary fix mechanism which enables temporary fix in the state which rotated the rear fender to the retracted position. FIG. 2 is a schematic perspective view of the rear wheel suspension device in the motorcycle shown in FIG. FIG. 12 is a rear view of the rear wheel suspension device shown in FIG. 11. It is a right view of the rear-wheel suspension apparatus shown in FIG. FIG. 12 is a view showing a mounting relationship between left and right rear suspension units in the rear wheel suspension device shown in FIG. 11.

Explanation of symbols

2 Rear Wheel 2A Axle 7L First Rear Suspension Unit 7R Second Rear Suspension Unit 10 Power Unit 14 Air Cleaner 14a Case 20 Body Cover 22 Rear Cover P Pivot (Oscillation Support Point)
DESCRIPTION OF SYMBOLS 100 Body frame 250 Rear fender 200 Hinge coupling part 251 Fixing part 252 Fixing part 210 Mounting bracket 220 Front end bracket 280 Hook (temporary fixing mechanism)

Claims (10)

A vehicle body frame, a rear wheel, an engine, and a power transmission device for transmitting the power to the rear wheel and supporting the rear wheel are integrally provided, and the swing fulcrum on the front side of the axle of the rear wheel is centered. A motorcycle including a power unit swingably connected to the vehicle body frame and a rear fender covering an outer periphery of the rear wheel,
A hinge coupling portion is attached to the vehicle, and the rear fender rotates with respect to the hinge coupling portion to interfere with the use position that covers the outer periphery of the rear wheel and the rear wheel that is detached from the axle. A motorcycle characterized in that a retreat position to be avoided can be selected.   The motorcycle according to claim 1, wherein the hinge coupling portion is disposed to extend in a vehicle width direction.   The motorcycle according to claim 2, wherein the hinge coupling portion is disposed at the same position as the rear wheel in the vehicle width direction.   The motorcycle according to claim 3, further comprising an air cleaner connected to the engine above the power unit, wherein the hinge coupling portion is provided in a case of the air cleaner.   The motorcycle according to claim 4, wherein an air suction port of the air cleaner is provided on a wall surface of the case facing away from the hinge coupling portion.   The motorcycle according to claim 2, wherein the rear fender is covered with a vehicle body cover that covers the vehicle body frame.   7. The motorcycle according to claim 6, further comprising a temporary fixing mechanism that allows the rear fender to be temporarily fixed at the retracted position, and the temporary fixing mechanism is provided on the vehicle body cover.   The motorcycle according to claim 7, wherein the temporary fixing mechanism includes a hook that is provided at a rear end of a trunk included in the vehicle body cover and that engages a rotation side end portion of the rear fender.   The fixing mechanism for fixing the rear fender to the use position is provided, and the fixing mechanism is disposed on the rear right side of the vehicle body and fixed to a rear arm that connects the engine and the rear wheel. Motorcycle. The rear wheel includes a pair of rear suspension units, one end is attached to the rear wheel side and the other end is attached to the vehicle body frame, and the suspension unit is disposed on the power unit side. 1 rear suspension unit, and a second rear suspension unit disposed on the opposite side across the rear wheel,
The mounting height of the second rear suspension unit to the vehicle body frame is set so that the mounting height of the first rear suspension unit to the vehicle body frame is higher than the mounting height of the second rear suspension unit. The motorcycle according to claim 2.

Images