JPH10203452A - Cowling mounting structure for motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a condition enjoyable removing partly a cowling in accordance with fondness of a user, and improve outward appearance quality regardless of mounting/demounting the cowling, even without addition, modification, etc., of parts. SOLUTION: A cowling mounting structure for a motorcycle is constituted such that a cowling arranged in a form covering a car body from its front surface part over to side surface part is divided from above successively into an upper cowl 31, middle cowl 32 and a rear cowl, each cowl is mounted removably relating to a car body. Here, between an upper leg part of the middle cowl 32 and the car body, a mounting part of insertion structure is provided, a mounting part of this middle cowl 32 is superposed so as to cover from outside in a lower leg part of the upper cowl, 31, here, in a part not overlapped with the middle cowl 32, the upper cowl is screw locked to the car body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cowling mounting structure for a motorcycle, and more particularly, to a technique for making a part of a split cowling detachable while maintaining the appearance quality of a mounting portion of the split type cowling to a vehicle body. It is about. It should be noted that the motorcycle according to the present invention refers to the entire motorcycle including a motor-driven bicycle and a scooter.

[0002]

2. Description of the Related Art As a motorcycle with a cowling (body cover), there is widely known a motorcycle provided with a cowling that covers from a front portion to a side portion of a vehicle body. The cowling plays an important role in improving the appearance quality, in addition to improving the functionality such as reducing air resistance during running and taking in cooling air.

[0003] This type of cowling is generally made of resin. Therefore, in many cases, the cowling is divided into a plurality of types in consideration of the moldability of the cowling itself and the workability of attaching the cowling to the vehicle body. As a division form, it is divided into an upper cowl, a middle cowl, a lower cowl, and the like in order from the upper part of the vehicle body, and in many cases, it is divided right and left as necessary.

With respect to the manner of mounting the cowling to the vehicle body, a cowl stay, a bracket, a flange, and the like are provided on the vehicle body frame, and the cowling is mounted on the body frame by using a method such as screwing or inserting.

In the split type cowling, since each cowl must be firmly attached to the vehicle body, as the number of divisions increases, the number of mounting portions by screwing to the vehicle body increases. Therefore, in place of the method of screwing each cowl, a method of reducing the mounting portion by screwing by tightening the upper and lower cowls together, for example, together with the upper cowl and the middle cowl, is often adopted. ing.

[0006]

However, it has been found that the conventional manner of mounting the cowling has problems to be further solved in the following points. This is a problem that occurs when a passenger wants to ride with a part of the cowling removed.

That is, the driver often likes a riding method such as removing the middle cowl and enjoying a state in which the engine portion is exposed. In such a case, in the conventional method of co-fastening, the middle cowl is detached from the co-fastened portion to be screwed alone, so that the cowl becomes thinner and a gap is generated. This gap may cause rattling in the mounting part of the upper cowl to be tightened, so it is necessary to add a new part as a spacer to fill the gap, or modify the mounting part independently. There is a problem that it must be performed.

In this respect, the method of screwing each cowl has an advantage that such a problem does not occur on the contrary. However, in addition to the increase in the number of fastening points as described above, the screw holes on the vehicle body side are exposed when the middle cowl is removed, and the appearance is impaired.

The present invention has been made in consideration of the above points, and allows a user to enjoy a state in which a part of a cowling is removed according to a user's preference without adding or modifying parts. It is another object of the present invention to provide a motorcycle cowling mounting structure capable of maintaining a very good appearance quality regardless of the attachment and detachment of the cowling.

[0010]

In order to solve the above-mentioned problems, according to the present invention, a cowling arranged so as to cover from a front portion to a side portion of a vehicle body is divided into at least two types of cowls, an upper portion and a side portion. A cowling attachment structure for a motorcycle in which a cowl is detachably attached to a vehicle body, wherein an attachment portion having a plug-in structure is provided between an upper side portion of the side cowl and the vehicle body, and the attachment portion of the side cowl is provided as described above. The upper cowl was overlapped so as to cover from the outside at the lower side, and the upper cowl was screwed to the vehicle body at the lower side of the upper cowl where it did not overlap with the side cowl.

The upper cowl (upper cowl) that covers the side cowl (middle cowl) is fastened to the vehicle body at a portion that does not overlap with the middle cowl. The attachment and detachment of the middle cowl does not affect the attachment portion of the upper cowl. Therefore, unlike the conventional co-fastening, the cowl thickness of the tightened portion of the upper cowl does not change regardless of the presence or absence of the middle cowl, and it is not necessary to add or remodel components such as spacers when the middle cowl is attached or detached. Further, since the mounting portion of the middle cowl is covered from the outside by the lower side portion of the upper cowl, the mounting portion of the middle cowl is not seen from the outside regardless of the attachment or detachment of the middle cowl.
Therefore, appearance quality is also improved.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The preferred embodiment of the motorcycle cowling mounting structure to which the present invention is applied can take the following aspects.

A mounting portion on the vehicle body side for mounting the upper cowl (upper cowl) and the side cowl (middle cowl) is a flange extending from the fuel tank, and the flange overlaps the side plate and the bottom plate of the fuel tank with each other. It is preferable to project the stay in the form of a stay.

With this configuration, it is not necessary to separately attach a bracket having a screw hole to the vehicle body, and the bracket and the like can be provided directly to the fuel tank. It becomes easy to provide a plurality.

It is also preferable that the upper cowl and the middle cowl are formed so as to have mutually small thicknesses in the overlapping portion, so that the surface step of the connection surface between the upper cowl surface and the side surface of the fuel tank coincides with each other.

By doing so, since there is no surface step between the upper cowl surface and the side surface of the fuel tank, a good mating surface whose connection surface is smoothly continuous can be obtained.
The appearance quality is improved accordingly. This point can reduce the lateral swelling due to the press working of the side plate of the fuel tank, thereby contributing to the improvement of the workability of the fuel tank.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described with reference to FIGS. 1 is a side view of a motorcycle to which the present invention is applied, FIG. 2 is a front view of a cowling, FIG. 3 is a side view of a cowling, and FIGS. 4 to 7 are cross-sectional views of a cowling attachment portion.

The motorcycle according to this embodiment is generally designated by the reference numeral 10 in FIG. The motorcycle 10 includes a head pipe 13 on which a steering shaft is mounted, above a front fork 12 that supports a front wheel 11. The main frame 14 including the head pipe 13 and the seat rail 15 are located at the center of the vehicle body.

Main frame 14 and seat rail 15
A fuel tank 16 and a seat 17 are provided on the upper part of the tank so as to cover them from above. An engine 18 is mounted on the lower part of the main frame 14, and the chain 1
9, the rear wheel 20 is driven. 21
Is a rear arm, 22 is a rear suspension, and 23 is a handle.

The motorcycle 10 is provided with a cowling (vehicle body cover) 30 that covers the front part of the vehicle body and the right and left side parts. This cowling 3
0 is divided into a plurality of parts, each of which has a mounting structure as described later.

FIGS. 2 and 3 are a front view and a side view showing the appearance of the cowling 30. FIG. The cowling 30 is divided into an upper cowl 31, a middle cowl 32, and a lower cowl 33 in order from the top. Further, the middle cowl 32 is divided into two parts, left and right. In the figure,
Reference numeral 35 denotes a windshield, 36 denotes a headlight unit, and 37 denotes a flasher.

FIGS. 4A and 4B show the upper cowl 31. FIG.
2 shows a structure of a mounting portion of the middle cowl 32 to the fuel tank 16. Of these, FIG.
4A is a sectional view taken along line AA, and FIG. 4B is a sectional view taken along line BB in FIG. As can be understood from these figures, the upper side of the middle cowl 32 and the lower side of the upper cowl 31 are attached to the flange 50 provided on the fuel tank 16. The mounting portion of the upper cowl 31 has a screwing structure, and a nut 51 is provided inside the flange 50 projecting further downward from the lower side surface of the fuel tank 16.
And a countersunk screw 52 is screwed into the nut 51 from the outside to attach the lower side near the rear portion of the upper cowl 31.

The flange 50 has a two-piece structure,
The side plate 16a and the bottom plate 16b of the fuel tank 16 are overlapped, extended downward in a stay shape, and integrated by welding. A grommet 53 made of an elastic material such as synthetic rubber is loaded between the outer surface of the flange 50 and the head 52a of the screw 52. The grommet 53 has a peripheral groove 53a that fits into a hole 35 provided in the upper cowl 31 on the outer peripheral portion. Further, a collar 54 for preventing the grommets from being crushed and for spacers is provided in the central hole.
Is set. This allows the rear portion of the upper cowl 31 to be connected to the fuel tank 1 simply by screwing in the screw 52.
6 can be easily attached. The mounting portion of the upper cowl 31 by such a screw 52 does not overlap with the middle cowl 32, and the screw 52 fixes and holds only the upper cowl 31 at this portion. Therefore, the length of the screw 52 and the thickness of the spacer collar 54 are determined only by the thickness of the upper cowl 31.

The middle cowl 32 has a plug-in structure,
The grommet 56 is set by fitting the peripheral groove 56 a of the grommet 56 into the mounting hole 55 provided in the flange 50.
The boss-like projection 39 protruding from the inner surface of the upper side of the middle cowl 32 is inserted into and attached to the center hole 56b. The upper side portion (mounting portion) of the middle cowl 32 is covered from the outside by the lower side portion of the upper cowl 31. Therefore, in this embodiment, the middle cowl 32 is attached first, then the upper cowl 31 is attached, and the middle cowl 32 is sandwiched. Thus, the middle cowl 32 can be firmly attached to the fuel tank 16 even though the middle cowl 32 has an insertion structure that is convenient for attachment and detachment.

Also, overlapping portions 31a, 32a of the upper cowl 31 and the middle cowl 32 in the mounting portion.
Then, as shown in the drawing, the thickness of the fuel tank 1 and the fuel tank 1
The configuration is such that the surface step of the connection surface with the side surface of No. 6 matches. That is, these overlapping portions 31a and 32a are thinner than the base portions of the upper cowl 31 and the middle cowl 32, respectively. As a result, there is no surface step between the surface of the upper cowl 31 and the side surface of the fuel tank 16.
As a result, the connection surface becomes a good mating surface that is smoothly continuous, and the appearance quality is improved accordingly. This point is because the lateral swelling based on the press working of the side plate 16a of the fuel tank, that is, the amount of narrowing of the flange 50 inward in the vehicle width direction can be set small, so that the workability of the fuel tank is also improved. Contribute. This is because there is a processing restriction that the size cannot be made too large by pressing.

The lower edge 31b of the upper cowl 31 is provided with a small gap α so as not to contact the surface of the middle cowl 32 as shown in FIG. This is because, when they come into contact with each other, powder such as shaving powder comes out due to friction caused by vibration and causes a deterioration in appearance.

In such a mounting structure, the middle cowl 3
The upper cowl 3 is attached to the second fuel tank 16.
1 and is invisible from the outside. As a result, the grommet 56 and holes are not exposed even when the middle cowl 32 is attached or detached, so that the appearance quality can be improved. Further, as described above, the upper cowl 31 is directly screwed to the flange 50 of the fuel tank 16 without the middle cowl 32, that is, without being tightened together. It does not affect the mounting state of the upper cowl 31 as before. Therefore, the user can enjoy the game freely by removing the middle cowl 32 without adding or remodeling parts such as spacers.

FIGS. 5 (D), (E) and (F) are a sectional view taken along the line DD, a sectional view taken along the line EE and a sectional view taken along the line FF of FIG. 3, respectively. Cowl 32
3 shows the structure of another overlapping portion. First, FIG.
In the front part of the cowling shown in (D), a fitting groove 31c is formed on the lower side of the upper cowl 31, and the groove 3c is formed.
This is a structure in which the upper side 32c of the middle cowl 32 is fitted into 1c. The upper side portion 32c is bent one step inward (toward the vehicle body) and then rises, thereby forming both side pieces 31 of the groove 31c.
The upper side 32c is covered from inside and outside by d and 31d, and moreover, care is taken to provide a smooth and continuous connection surface on the front side (right side in the figure) of both cowls.

Next, in FIG. 5 (E), a step 32e is provided on the upper side of the middle cowl 32, and a hole 32f penetrating inward (to the vehicle body) from the step is formed. The lower side 3e is provided on the inner surface of the lower side 31e.
With the rib 1e placed on the step 32e, the ribs 31f are positioned by providing a rib-like projection 31f to be inserted into the hole 32f. In addition, the surfaces of both cowls 31, 32 are smoothly continuous on the right side in the figure. Connection surface.

Next, in FIG. 5 (F), a step 32g is provided on the upper side surface side (left side of the figure) of the middle cowl 32, and a thick rising piece 32h is provided.
The screw 60 is screwed to the nut portion 61 of the spring nut 62 in such a manner that the lower cowl 31 is abutted on the lower side end of the upper cowl 31. Of course, also in this case, care is taken so that the connecting surfaces are smooth and continuous on the front sides of the cowls 31 and 32.

FIG. 6G is a sectional view taken along the line GG of FIG. 3, and shows the structure of the overlapping portion of the middle cowl 32 and the lower cowl 33. In this case, the lower side of the middle cowl 32 is superimposed on the upper side of the lower cowl 33 from the outside,
Screw 63 into nut portion 64 of spring nut 65
It has a screwed structure. In the structure shown in FIG. 6 (G), the lower cowl 33 of the screw portion is cut out and can be moved up and down (arrows) to enable position adjustment.

FIG. 6H is a cross-sectional view taken along line HH of FIG. 3, and shows the structure of the overlapping portion between the lower side of the middle cowl 32 and the upper side of the lower cowl 33. In this part,
By providing a bent rib 32j projecting in a direction away from the inner surface on the inner surface side of the middle cowl 32 and further hanging downward, an approach space 32k is formed inward, and the upper side of the lower cowl 33 is positioned relative to the approach space 32k. It has a structure where the part enters. 32l is a reinforcing rib. Also in this structure, the lower cowl 33 is the middle cowl 32
In contrast, the position can be adjusted up and down as indicated by the arrow.

FIG. 6 (J) is a sectional view taken along the line JJ of FIG. 3, and shows a mounting portion of the middle cowl 32 to the vehicle body.
The mounting portion has a plug-in structure, in which a grommet 68 is mounted in a hole 67 provided in a bracket 66 that supports the radiator, and a protrusion 32 m protruding from the inner surface of the middle cowl 32 is inserted into the grommet 68. And The projection 32m is provided with a hook 32n for preventing the grommet 68 from easily coming out of the hole 68a.

FIG. 7 (K) is a sectional view taken along the line KK of FIG. 3, and shows a mounting portion of the middle cowl 32 to the main frame 14. The main frame 14 has a mounting member 14a with a screw hole, and has a structure in which the lower side of the middle cowl 32 is screwed by a screw 69 screwed into the screw hole. In this case, the screw insertion hole 32p of the middle cowl 32 has a large clearance so that the position can be adjusted.

FIG. 7 (L) is a sectional view taken along the line LL of FIG. 3, and shows a mounting portion of the lower cowl 33 to the vehicle body. In this mounting portion, a nut 71 is welded to the inside of a bracket 70 mounted on the crankcase of the engine 18,
A screw 72 is screwed into the nut 71 to attach the front part of the lower cowl 33.

FIG. 7M is a sectional view taken along the line MM of FIG. 3, in which a nut 74 is welded to the inside of a bracket 73 attached to the crankcase of the engine 18, and a screw 75 is screwed into the nut 74. Thereby, the rear part of the lower cowl 33 is attached.

In such a mounting structure, since the lower cowl 33 covers the entire upper side of the lower cowl 33 from the outside, the connection surface between the middle cowl and the lower cowl is beautifully finished, and the appearance quality is improved. Improvement can be achieved. In particular, the middle cowl 32 is
Since the lower cowl 33 is mounted depending on the engine, it is difficult to improve the mounting accuracy, and therefore, it is difficult to finish the connection surface beautifully. However, the overlapping portion of the middle cowl and the lower cowl has a connection structure having a relatively high degree of freedom in the vertical direction, that is, a step is provided on one side as in the case of the combination of the upper cowl and the middle cowl, and the outer surfaces of both are flush. (Continuous surface) instead of making it inconspicuous even if it is intentionally discontinuous as a discontinuous surface, so that even if the mounting accuracy is slightly reduced, the mounting structure has almost no effect on the finished state It can be.

[0038]

As described above, according to the present invention, in a motorcycle cowling mounting structure in which each cowl divided into an upper cowl and a middle cowl is removably mounted on a vehicle body, the upper cowl and the middle cowl have the same structure. A mounting portion of a plug-in structure is provided between the vehicle body and the middle cowl, and the mounting portion of the middle cowl is overlapped with the lower side portion of the upper cowl so as to be covered from the outside, and the middle cowl is interposed between the lower side portion of the upper cowl and the vehicle body. Since the mounting part of the screwed structure is provided without the need, the attachment and detachment of the middle cowl does not affect the mounting part of the upper cowl, and therefore, there is no need to add or modify parts to the mounting part. Depending on the user's preference, the cowling can be enjoyed with part of the cowling removed, and the middle cowl's mounting Since the I covered from outside with the lower side portion of the Le, it can be maintained at no appearance quality very good form related to attachment and detachment of the cowling.

A mounting portion of the vehicle body on which the upper cowl and the middle cowl are mounted is a flange extending from the fuel tank, and the flange projects in a stay shape so that the side plate and the bottom plate of the fuel tank overlap each other. By doing so, it is not necessary to separately attach a bracket with screw holes to the vehicle body side, it can be provided directly on the fuel tank, and it is easy to provide multiple holes required for screwing and insertion structure become.

The upper cowl and the middle cowl are formed so as to have mutually small thicknesses in the overlapping portion, and the surface step of the connection surface between the upper cowl surface and the side surface of the fuel tank coincides with each other. The surface quality can be improved by eliminating a surface step between the fuel tank side surface and the connection surface as a smoothly continuous good mating surface. In addition, since the lateral swelling based on the press working of the side plate of the fuel tank can be set small, the workability of the fuel tank can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a motorcycle according to an embodiment of the present invention.

FIG. 2 is a front view of the cowling according to the embodiment of the present invention.

FIG. 3 is a side view of the cowling according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of an attachment portion of the cowling according to the embodiment of the present invention.

FIG. 5 is a sectional view of a mounting portion of the cowling according to the embodiment of the present invention.

FIG. 6 is a cross-sectional view of a mounting portion of the cowling according to the embodiment of the present invention.

FIG. 7 is a cross-sectional view of a mounting portion of the cowling according to the embodiment of the present invention.

[Explanation of symbols]

10: motorcycle, 13: head pipe, 16: fuel tank, 16a: side plate, 16b: bottom plate, 30: cowling, 31: upper cowl, 31a: overlapping portion, 3
2: middle cowl, 32a: overlapping portion, 33: lower cowl, 36: headlight unit, 50: flange, 5
1: nut, 52: screw.

Claims (3)

[Claims] 1. A motorcycle in which a cowling arranged so as to cover from a front portion to a side portion of a vehicle body is divided into at least two types of cowls, an upper cowl and a side cowl, and each cowl is detachably attached to the vehicle body. A cowling mounting structure, wherein a mounting portion of a plug-in structure is provided between the upper side portion of the side cowl and the vehicle body, and the mounting portion of the side cowl is overlapped with the lower side portion of the upper cowl so as to cover from the outside, A cowling mounting structure for a motorcycle, wherein the upper cowl is screwed to a vehicle body at a portion of the lower side portion of the upper cowl that does not overlap with the side cowl. 2. A mounting portion on the vehicle body side for mounting the upper cowl and the side cowl is a flange extending from a fuel tank, and the flange has a stay shape in a form in which a side plate and a bottom plate of the fuel tank overlap with each other. The motorcycle cowling mounting structure according to claim 1, wherein the cowling mounting structure protrudes. 3. A structure in which the upper cowl and the side cowl are formed so as to have mutually small thicknesses in an overlapping portion, so that a surface step of a connection surface between a surface of the upper cowl and a side surface of the fuel tank coincides with each other. The motorcycle cowling mounting structure according to claim 2, characterized in that: