JP3578738B2 - Body structure of motorcycle - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a motorcycle body structure, and more particularly to an advantageous arrangement of a rear cowl and a rear blinker with respect to a muffler cover .
[0002]
[Prior art]
Motorcycle provided with a rear cowl projecting from the left and right like a sheet lower are known, for example, the actual Hei 4-35 9 89 No., was overhang increases laterally of the seat cowl, to the interior space It is shown that a part of the rear cowl also functions as a muffler cover by disposing a muffler. Japanese Patent Application Laid-Open No. 3-237221 discloses that a muffler is covered with a muffler cover having a substantially semicircular cross section.
[0003]
[Problems to be solved by the invention]
By the way, in the above-mentioned conventional example, since the muffler is arranged in the internal space of the rear cowl, a design effect that makes the muffler cover seem to be the muffler itself cannot be obtained. In the JP-A-3-237211 serve to weight if example covering only the appearance portion of the muffler, conspicuous that also a cover which is not integral with the muffler. Thus, the present invention provides a muffler cover that covers an external part, making it difficult to recognize that the cover is used, giving an appearance as if it were a muffler, and providing a muffler and a muffler cover. The purpose is to produce a bodily sensation .
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a motorcycle body structure according to the present invention includes a seat, a rear cowl extending right and left from below the seat, a rear blinker disposed below the rear cowl, and a vehicle body side surface below the rear cowl. in motorcycle having a muffler that is longer disposed in the front-rear direction, the muffler, together covered with part or hoax Fuller cover after its appearance portion, the muffler cover, the upper cowl, The lower part is sandwiched between the rear turn signals, and is arranged.
[0005]
【The invention's effect】
Since the muffler cover covers the external part of the muffler, the weight can be reduced as compared with the case where the muffler cover covers the entire circumference. Moreover, to cover up part after muffler muffler cover part muffler is visible in a plan view is covered with a muffler cover, and arranged to re Yauinka the rear below the muffler, from across the muffler rear winker and rear cowl, Looking at the muffler cover this is rather the difficulty was recognized as a cover, at the same time as if it is possible to show a muffler itself, such as to produce a sense of unity with the muffler and muffler cover, to that excellent design effects Become.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment will be described with reference to the drawings. FIG. 1 is a left side view of a motorcycle to which the present embodiment is applied, and FIG. 2 is a plan view thereof. In these figures, a double seat 3 is disposed between a front wheel 1 and a rear wheel 2, a fuel tank 5 is provided in front of a driver's seat 4, and a rear cowl 7 is provided from both left and right sides of a passenger seat 6 to the rear. The rear cowl 5 and the rear cowl 7 are arranged back and forth with the driver's seat 4 interposed therebetween, and overhang portions 8 and 9 are formed on both left and right sides, respectively.
[0007]
As shown in FIG. 2, the planar shape of the fuel tank 5 is substantially rhombic on the front half side, and the ridge line 8 a forming the contour of the overhanging portion 8 gradually moves sideways from the front end side toward the rear to the maximum protruding portion 8 b. The rearward portion of the fuel tank 5 has a widening curve, and the rearward portion of the fuel tank 5 from the maximum protruding portion 8b gradually converges toward the center of the vehicle body. The overhanging portion 9 of the rear cowl 7 also has a ridge line 9a forming a contour line that gradually widens from the front to the rear up to the maximum protruding portion 9b, and the rear portion from the maximum protruding portion 9b gradually converges to the vehicle body center side. .
[0008]
Below the fuel tank 5, a four-stroke water-cooled in-line four-cylinder engine 10 is arranged, which is sucked in through an air cleaner 11 and a fuel injection device 12, and exhausted through an exhaust pipe 13 and a muffler 14. . The exhaust pipe 13 passes under the engine 10, rises upward behind the pivot plate 17, crosses the rear fork 18 in a side view, and branches into a pair of mufflers disposed on the right and left sides of the vehicle below the rear cowl 7. Connecting. Each of the left and right mufflers is covered with a muffler cover 14 on the side where the surface is to be viewed.
[0009]
A part of the fuel injection device 12 is covered by an injection device cover 15 disposed close to and below the bottom rear portion of the fuel tank, and is covered by a rear side surface cover 16 of the air cleaner 11. The side cover 16 extends below the driver's seat 4 and is in contact with the bottom.
[0010]
Below the side cover 16 and behind the engine 10, a pivot plate 17 is vertically long, and the front end of a rear fork 18 is swingably supported by a pivot shaft 17 a. Buffered.
[0011]
A front end of a step holder 20 having a substantially Y-shape in side view is attached to a rear portion of the pivot plate 17, and a rear side of the step holder 20 overlaps with the rear wheel 2 in side view and extends rearward to a position below the passenger seat 6. The pillion step 21 for the passenger is foldably attached to the extension.
[0012]
In the drawing, reference numeral 22 denotes a front fork, 23 denotes a head pipe, 24 denotes a headlight, 25 denotes a meter, 26 denotes a steering wheel, 27 denotes a body frame, 28 denotes a rider step for a rider, 29 denotes a movable rear fender, and 30 denotes a chain. A case, 31 is a grip bar, 32 is a tail lamp, 33 is a rear blinker, 34 is a license plate, 35 is a rider, and 36 is his knee.
[0013]
Next, the muffler cover will be described. FIG. 3 is a plan view of the rear side of the vehicle body including the passenger seat 6, and FIG. 4 is a sectional view taken along line 4-4 of FIG. As can be seen in FIG. 3, since the overhanging portion 9 of the rear cowl 7 gradually reduces the amount of overhang behind the maximum projecting portion 9b, a muffler arranged in the front-rear direction on the side of the vehicle body below the rear cowl 7 is normally visible. However, all of this portion is covered with the muffler cover 14, and the only portion visible from above is the muffler cover 14.
[0014]
The rear end of the muffler cover 14 forms a tapered portion 40 whose diameter is reduced, and covers the rear end surface of the muffler. Further, a rear winker 33 is located close to a lower side of the tapered portion 40 which is a rear end of the muffler cover 14, and the rear winker 33 protrudes further to the side than the maximum side protrusion of the muffler cover 14.
[0015]
As shown in FIG. 4, the muffler cover 14 has a substantially semicircular cross-section made of a suitable material having excellent heat insulating properties, such as resin or metal, and the upper circumferential end 41 is the tip of the overhang 9. It enters the vehicle body center side by a dimension a from the ridge line 9a, and is located further inside the vehicle body than the center of the muffler 43.
[0016]
The lower circumferential end 42 extends under the muffler 43. The muffler cover 14 is located inward of the maximum outwardly projecting portion 44 by the dimension b, and is located outside the center of the muffler 43. Further, the position is also overlapped with the position of the ridge line 9a, so that the lower end 42 in the circumferential direction is not seen by the overhang 9 in plan view. Further, the rear winker 33 protrudes outward beyond the maximum outward protruding portion 44.
[0017]
As shown in FIG. 1, the muffler cover 14 extends from substantially below the rear of the driver's seat 4 and near the rear cushion 19 to the position of the rear winker 33, and covers the entire length of the muffler.
[0018]
Next, the operation of the present embodiment will be described. Since the muffler cover 14 covers only the external part of the muffler 43 , the weight can be significantly reduced as compared with the case where the muffler cover covers the entire circumference. In addition, the muffler cover 14 covers the rear end of the muffler 43, and the rear end of the muffler 43 is formed into a tapered portion 40 like the rear end of the muffler 43. 14, and a rear blinker 33 is disposed adjacent to and below the rear end of the muffler 43, and the rear blinker 33 is projected further outward than the maximum outwardly projecting portion 44 of the muffler cover 14. The lower side of 14 is hardly seen by the rear blinker 33. Therefore, even if the muffler cover 14 is viewed, it is difficult to immediately recognize the cover as a cover, and it is possible to make the muffler 43 look as if it is the muffler 43 itself.
[Brief description of the drawings]
FIG. 1 is a side view of a motorcycle to which an embodiment is applied; FIG. 2 is a plan view of the same; FIG. 3 is a plan view of a rear portion of a vehicle body including a passenger seat; FIG. Figure [Explanation of symbols]
3: Double seat, 4: Driver's seat, 6: Passenger's seat, 7: Rear cowl, 9: Overhang, 14: Muffler cover, 33: Rear blinker, 40: Taper, 43: Muffler, 44: Maximum outward projection

Claims (2)

In a motorcycle including a seat, a rear cowl extending right and left from below the rear cowl , a rear blinker disposed below the rear cowl, and a muffler disposed long in the front-rear direction across the side of the vehicle body below the rear cowl, the muffler, with covered with part or hoax Fuller cover after its appearance portion, the muffler cover includes two-wheel automatic, characterized in that it is disposed upward said rear cowl, sandwiched respectively downward in rear winkers Car body structure. 2. The vehicle body structure according to claim 1, wherein the rear cowl changes so as to gradually converge rearward from the maximum overhang portion toward the center of the vehicle body in plan view, and two left and right mufflers are disposed below the rear cowl.

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