JP2000344165A - Vehicle body cover structure for motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily provide an air passage in a vehicle body cover with a simple and small molding die by forming a U-shaped notch on the vehicle body cover, folding a tongue piece thus obtained inward or outward, fixing it to a vehicle body at this angle, and forming the air passage on the cover. SOLUTION: A U-shaped notch is provided on an undercover 34, a thin section 34e is folded inward as an elastically deformable hinge, and a hook section 34i provided at the tip section of a tongue piece 34g is hooked on the rear cross member 63 of a vehicle body at this folded angle. The tongue piece 34g is supported on the vehicle body by this hooking only, and it is not required to be stuck by a bolt, a screw or a rivet. Even if the undercover 34 and the rear cross member 63 are relatively displaced, the displacement is absorbed by the folding angle and the hook section 34i to ensure satisfactory assembling. Since the tongue piece 34g is hooked on the vehicle body at the prescribed bending angle, a relatively large air-passage where air flows in or out can be formed at the notch 34i and a portion surrounded by it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle body cover structure.

[0002]

2. Description of the Related Art As a body cover structure of a motorcycle,
For example, Japanese Patent Application Laid-Open No. Hei 10-230833 entitled "Vehicle body cover structure" is known. According to the above prior art, according to FIG. 1 of the publication, the vehicle body is covered with a vehicle body cover 10 (the number is cited in the publication. The same applies hereinafter). Further, according to FIGS. 2 and 5 of the publication, a pair of left and right cylindrical openings 21 and 21 resembling an air duct are formed in a cover member 11 forming a vehicle body cover 10.

[0003]

Incidentally, in general, a motorcycle body cover is often formed integrally with an air passage formed of a cylindrical air duct in order to cool an engine, a radiator and the like. The engine and radiator are cooled by the outside air taken from the air duct. However,
Depending on the structure of the vehicle body cover, a complicated and large molding die is used to integrally form the cylindrical air duct, which causes an increase in cost. If a simple and small molding die is used to solve such a problem, the shape and position of the air duct are restricted, so that there is room for improvement.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a technique capable of easily providing an air passage in a vehicle body cover by using a simple and small molding die.

[0005]

In order to achieve the above object, a first aspect of the present invention is to form a substantially U-shaped cut in a vehicle body cover that covers a vehicle body and bend the obtained tongue-like piece inward or outward. The tongue-shaped piece is fixed to the vehicle body at the bending angle to form an air passage through which air enters and exits from the vehicle body cover.

[0006] By bending the tongue formed on the body cover inward or outward, a hole is formed in a portion where the tongue is present. If this hole is used as an air passage, air can enter and exit the inside and outside of the vehicle body cover. Since the air passage has such a simple configuration, a simple molding die is sufficient.

According to a second aspect of the present invention, a hook is provided at the tip of the tongue, and the hook is hooked to the vehicle body to fix the tongue to the vehicle. Even if the position of the vehicle body cover and the vehicle body side are relatively displaced or the vehicle body cover is deformed, the position deviation is absorbed by the bending angle of the tongue-shaped piece and the hook, and the latch is good. We can maintain state.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that "before", "after",
“Left”, “right”, “up”, and “down” follow the direction seen from the operator, where Fr is the front side, Rr is the rear side, L is the left side, R is the right side, and CL is the center of the vehicle body (center of vehicle width). Is shown. Also, the drawings should be viewed in the direction of reference numerals.

FIG. 1 is a left side view of a motorcycle according to the present invention. The motorcycle 10 includes a body frame 11, a front fork 13 attached to a head pipe 12 of the body frame 11, and a front wheel 1 attached to the front fork 13.
4 and front fender 15 and front fork 1
3, a handle cover 17 covering the periphery of the handle 16, an accessory storage box 18 attached to a lower center portion (low floor portion) of the body frame 11, and a swing attached to a rear upper portion of the body frame 11. A power unit 21 (combined structure of a front engine 22 and a rear transmission mechanism 23), a rear wheel 24 attached to the rear of the power unit 21, a rear suspension 25 for suspending the power unit 21 on the rear upper part of the body frame 11, A storage box 26 attached to an upper rear portion of the body frame 11,
Seat 2 attached to the upper part of the storage box 26 so that it can be opened and closed
7, a fuel tank 28 attached to the rear upper portion of the body frame 11 behind the storage box 26,
A scooter-type vehicle mainly including a body cover 30 that covers the vehicle body.

The vehicle body cover 30 includes a front cover 31 for covering the front portion of the head pipe 12, a leg shield 32 for covering the driver's legs, a step floor 33 for placing the driver's foot, and a step floor. An under cover 34 disposed below the lower frame 33 to cover the lower portion of the body frame 11
And a rear cover 35 that covers the rear half of the body frame 11. In the figure, 16a is a grip, 41 is a front suspension, 42 is a headlamp, 43 is a main stand, 44 is a kick arm for starting the engine, 45 is a tail lamp, 46 is a rear fender, 47 is a rear grip, 48 is an air cleaner, 49 Is a carburetor.

FIG. 2 is a plan view of a motorcycle according to the present invention.
2, 52, a radiator 53, and a muffler 54. The radiator 53 is provided integrally on the right side of the power unit 21.

FIG. 3 is an exploded perspective view of the vehicle body frame according to the present invention. The body frame 11 includes a step floor 33
Below (see FIG. 1), the divided frame is divided into three parts: a front frame 11F, a rear frame 11R, and a sub-frame 81. The front frame 11F includes the head pipe 12
A head pipe post 61 extending downward from the head pipe 12, and a pair of left and right main frames 62, 62 extending bifurcated rearward from the lower end of the head pipe post 61.
And a rear cross member 63 spanned between the rear ends of the left and right main frames 62, 62, and is an integrally cast frame having a substantially rectangular shape in plan view, for example, an aluminum alloy casting. Since it is a rectangular frame in plan view, it has a space S1 at the center.

As described above, the left and right main frames 62,
Reference numeral 62 denotes a member extending rearward from the head pipe 12, and has a lower rear end formed with an inclined surface inclined rearward and upward, and this inclined surface is used as front connecting surfaces 64, 64. The rear cross member 63 is a U-shaped member which is open when viewed from the front.
It is set lower than 62.

The rear frame 11R includes a pair of left and right main frames 71, 71 and a pair of left and right main frames 71, 71.
Front cross member 7 spanned between the middle parts in the front-rear direction
2 and a rear cross member 73 spanned between the rear ends of the left and right main frames 71, 71 are an integrally cast frame, for example, an aluminum alloy casting. The left and right main frames 71, 71 form an inclined surface inclined downward and rearward below the front end, and this inclined surface is connected to the rear connecting surface 7.
4,74. These mainframes 7
1, 71 extend further rearward, extend upward from the rear end, and further extend rearward and upward from the upper end thereof.
-Shaped member.

The body frame 11 has front connecting surfaces 64, 6
4 are superimposed on the rear connecting surfaces 74 and 74 and are connected by bolts and nuts 75...
Are integrally combined. The rear frame 11R is formed by connecting a sub-frame 81 to the rear end with bolts and nuts 85. The subframe 81 includes left and right storage box posts 82, 82 and a connecting stay 83 connecting the storage box posts 82, 82. The connecting portion of the sub-frame 81, that is, the portion connected by the bolts and nuts 85 is provided before and after the rear suspension mounting portion 77, and also serves as reinforcement. Reference numeral 78 denotes a hanger pivot unit.

FIG. 4 is a left side sectional view of the vehicle body frame, power unit, accessory storage box, step floor, and under cover according to the present invention. The step floor 33 overlaps the front end of the flat footrest portion 33a with the lower edge portion 32a of the leg shield 32,
The rear end of the footrest portion 33a extends upward to form a rear wall portion 33b, and the rear wall portion 33b covers the front portion of the engine 22. The rear frame 11R has a power unit 21 attached to a hanger pivot 78 via a hanger plate 91 so as to be able to swing up and down.

The engine 22 of the power unit 21 is
This is a cycle single-cylinder water-cooled engine in which the cylinders are arranged substantially horizontally toward the front of the vehicle body. Specifically, the engine 22 is disposed behind the step floor 33 with the head cover 92 facing forward,
And an ignition coil 93, and the cylinder head 9
4 (in front of the engine 22) with a spark plug 95,
The ignition coil 93 and the ignition plug 95 are connected by a high voltage cord 96.

The accessory storage box 18 is a box having a substantially rectangular shape which is open upward and viewed from above, and is formed in the space S of the front frame 11F.
1, the front upper flange 18a is placed on the lower end of the head pipe post 61, and is attached with a bolt / nut 101. The rear lower bracket 18b is placed on the rear cross member 63, and the bolt / nut 102 is mounted. It was attached with. Below the step floor 33,
Since the accessory storage box 18 is arranged, the auxiliary equipment storage box 18 can be easily arranged by effectively utilizing the empty space below the step floor 33.

In this figure, (1) accessory storage box 18
Shows that the battery 103 housed in the front frame 11F is attached with the band 104, and that (2) the lower part of the front frame 11F and the accessory housing box 18 are covered by the resin under cover 34.

FIG. 5 is a plan view showing the surroundings of the front frame, the engine, the accessory storage box, the step floor and the under cover according to the present invention. In the front frame 11F, a first cross member 66 is bridged between the front portions of the left and right main frames 62, 62, and a second cross member 67 is bridged between the rear portions of the left and right main frames 62, 62.
The first and second cross members 66 and 67 are press-formed products of a steel plate.

The step floor 33 is provided with a box inspection opening 33c for inspecting the inside of the accessory storage box 18, mainly for the battery 103, and a plug inspection opening 33d for inspecting the spark plug 95. I do. The box inspection opening 33c passes almost directly above the battery 103,
It is a rectangular opening in plan view, having an opening width substantially the same as the width of the battery 103, and having an opening length substantially the entire length of the accessory storage box 18, and is covered by a lid 105.

The plug check port 33d is provided on the step floor 3
3 is a generally rectangular opening opened at a position where the inspection work of the spark plug 95 is easy.
6 covered.

FIG. 6 is a sectional view taken along line 6-6 of FIG. The left and right main frames 62, 62 have inner standing walls 62a, 62a near the center CL of the vehicle body and outer standing walls 62b, closer to the outside.
62b, and is a substantially U-shaped cross-sectional member as viewed from the rear, in which flanges 62c, 62c are horizontally extended outward from upper ends of the outer standing walls 62b, 62b. The accessory storage box 18 extends horizontally outward from the left and right upper side portions of the flanges 18c, 18c over the entire length thereof, and fitting grooves 18d, 1 extending forward and backward on the lower surfaces of the flanges 18c, 18c.
8d, and the fitting grooves 18d, 18d are
The main frames 62a and 62a are mounted between the left and right main frames 62 by fitting to the upper ends of the main frames 62a and 62a. 107 is an accelerator wire cable, and 108 is a rear brake wire cable.

The step floor 33 has edges 33e, 33e extending downward from the left and right ends of the footrest 33a, and mounting bosses 33f, 33f extending downward from the lower surface of the footrest 33a.
Is projected. The under cover 34 is connected to the edge 33 of the step floor 33 from the left and right ends of the bottom plate portion 34a.
The side plate portions 34b, 34b extend to the back side of e, 33e.

This figure shows the left and right main frames 62, 6
The left and right ends of the first cross member 66 are overlapped on the flanges 62c, 62c in FIG. 2, and the mounting bosses 33f, 33f of the step floor 33 are placed on the left and right ends.
And the flanges 62c, 62c and the first cross member 6
6 shows that both the left and right end portions and the mounting bosses 33f, 33f are attached together by bolts 111, 111 and nuts 112, 112. The nut 112 is attached to a clip 113, and the clip 113 is
By inserting it into 2c, positioning is performed. Further, the first cross member 66 has substantially reverse L at the left and right end portions when viewed from the rear.
The auxiliary stays 68, 68 are fixed and the auxiliary stays 6 are fixed.
The side plates 34b, 34b of the under cover 34 are attached to the bolts / nuts 114, 114 on the vertical plates 68a, 68a.
It was attached with.

FIG. 7 is a sectional view taken along line 7-7 of FIG. The under cover 34 has cover flanges 34c extending horizontally from the upper ends of the side plates 34b, 34b toward the center CL of the vehicle width.
34c is formed. Left and right mainframe 6
The bolts 2 and 62 overlap the flanges 62c and 62c with the left and right ends of the second cross member 67, the mounting bosses 33g and 33g of the step floor 33, and the cover flanges 34c and 34c of the under cover 34, and bolt them. It was stopped. Details of the bolting structure will be described with reference to FIG.

FIG. 8 is a detailed view of the second cross member mounting portion according to the present invention. The cover flange 34c overlaps the flange 62c of the main frame 62, and has a relatively large-diameter through hole 34d vertically penetrated. The second cross member 67 has a substantially cup-shaped boss portion 67a projecting downward at an end. The boss portion 67a has a substantially dish-shaped lower end portion 67b slightly smaller in diameter than the through hole 34d, a horizontal step portion 67c connected to the upper end of the lower end portion 67b, and a cylindrical portion connected to the step portion 67c and having a larger diameter than the through hole 34d. 67d. The step floor 33 has a mounting boss 33g protruding downward from the lower surface of the footrest portion 33a, and the lower end surface of the mounting boss portion 33g is placed on the bottom surface of the lower end portion 67b of the second cross member 67. is there.

The structure of the second cross member mounting portion is such that the cover flange 34c is superimposed on the flange 62c of the main frame 62, and the boss portion 67a of the second cross member 67 is superimposed thereon. The lower end surface of the mounting boss portion 33g is mounted on the bottom surface of the lower end portion 67b by mounting the portion 67c thereon and further stacking the step floor 33 thereon, and attached together with the bolts 115 and the nuts 116. Nut 116 is clip 11
7, and the clip 117 is positioned by inserting the clip 117 into the flange 62c.
The mounting structure of the under cover 34 is described in (1) FIG.
A structure for bolting the side plates 34b, 34b shown in FIG.
(2) The cover flanges 34c, 3c shown in FIGS.
Only one of the structures for bolting 4c may be used. In the case of only the mounting structure of FIG. 6, the cover flanges 34c, 34c of FIG. 7 are unnecessary.

Further, in this figure, a boss 33o projecting downward is formed at a position facing the second cross member 67 in the footrest portion 33a, and the boss 33o is connected to the second cross member 6a.
7 and fixed by screws 118 from below. As described above, the second cross member 67 can also support the footrest 33a on the step floor 33. Similarly, the first cross member 66 shown in FIG.
The foot rest 33a can be supported by the first cross member 66. Therefore, the first and second cross members 66 and 67
It can be said that the supporting member (reinforcing member) supports the step floor 33.

FIGS. 9A to 9C are views showing the structure of the rear lower structure of the undercover according to the present invention. (A) is a partial plan view of the bottom plate portion 34a of the under cover 34. The under cover 34 is obtained by surrounding the bottom plate portion 34a with a thin portion 34e extending in the vehicle width direction, a substantially U-shaped cut 34f connected to the base end of the thin portion 34e, a thin portion 34e, and a cut 34f. 34g of a rectangular tongue in plan view, a hole 34h of a rectangular shape in plan view opened at the tip side of the tongue 34g, and a hook 34i provided at an edge of the hole 4h.
And ribs 34j, 34j provided on the back surface of the hook 34i.

(B) is a sectional view taken along the line bb of (a),
The hook 34i is a downwardly extending hook extending from the tongue-shaped piece 34g in a sectional view, and indicates that the hook faces the hole 34h.

(C) is a sectional view taken along the line cc of (a),
A part of the outer surface of the bottom plate part 34a is formed with a groove-shaped thin part 34e thinner than other parts, and a tongue-like piece 34g is connected to the thin part 34e, and this tongue-like piece 34g is made substantially flat. Indicates that it was formed on a plate. Resin under cover 34
Since the thin portion 34e is made thinner than the other portions, the thin portion 34e functions as a hinge that elastically deforms when the tongue-like piece 34g is bent inward or outward.

FIG. 10 is a sectional view of the rear lower structure of the under cover according to the present invention. The tongue-shaped piece 34g is bent into the under cover 34 by using the thin portion 34e as an elastically deformable hinge. The angle shows that the hook 34i provided at the tip of the tongue 34g is hooked on the rear cross member 63 on the vehicle body side. In this manner, the hook portion 34i is hooked on the vehicle body frame 11 and only hooked, so that the tongue-shaped piece 3
4 g can be supported, and there is no need to stop this portion with bolts, screws, rivets, or the like. In addition, even when the position of the under cover 34 and the position of the rear cross member 63 on the vehicle body side are relatively displaced, the position deviation is absorbed by the bending angle of the tongue-like piece 34g and the hook 34i, so that good The hooking state can be maintained. Therefore, it is possible to satisfactorily assemble a cover, such as the resin-made under cover 34, which is difficult to produce with high precision. Furthermore, even if the under cover 34 is deformed, a similarly good latching state can be maintained.

The notch 34f and the notch 34f are formed by hanging the tongue-shaped piece 34g on the vehicle body at a predetermined bending angle.
A relatively large air passage k through which air enters and exits can be formed in a portion surrounded by f. 34g of flat tongue
Is a wind guide plate for guiding cooling air, and the bottom plate portion 34a
The open air passage 34k is used as a cooling air introduction opening, and the engine 22 (see FIG. 4) can be cooled by introducing engine cooling air from the outside through the cooling air introduction opening. The lower rear structure of the under cover 34 and the cooling air introduction structure are also shown in FIG.

FIGS. 11A and 11B are explanatory views showing a method of forming the under cover according to the present invention. (A) shows an example in which the upper mold 121 and the lower mold 122 are matched and the under cover 3 is formed.
4 is being formed. (B) shows that the upper mold 121 and the lower mold 122 are released vertically and the molded under cover 34 is taken out.

In the under cover 34, a thin portion 34e recessed in the plate thickness direction, a cut 34f penetrating vertically, a thin portion 34
e and tongue 3 obtained by enclosing with notches 34f
4g, 34h vertically penetrated, downward hook-shaped hook 3
Since the 4i is formed, the under cover 34 can be molded using the upper and lower molds of the upper mold 121 and the lower mold 122 as molding molds. Therefore, a simple molding die can be used, and the shape and position of the air passage are not restricted, so that the degree of freedom in design is increased.

FIGS. 12A to 12C are views showing modified examples of the rear lower structure of the undercover according to the present invention. (A)
This shows that a substantially U-shaped notch 34f is formed in order to obtain a tongue piece 34g having a semi-elliptical shape in plan view. (B) shows that a substantially U-shaped notch 34f was formed in order to obtain a trapezoidal tongue 34g in plan view. (C) is a thin portion 34e
Instead of the perforated slit 34m, the undercover 3
No. 4 shows that it was formed. 34m perforated slit
Serves as an elastically deformable hinge when bending the tongue piece 34g in or out of the under cover 34.

In the above embodiment of the present invention,
(1) The motorcycle 10 is not limited to a scooter type vehicle. (2) The tongue-shaped piece 34g and the air passage 34k may be provided in the vehicle body cover 30, and are not limited to those provided in the under cover 34. (3) The thin portion 34e may be formed on at least the inner surface or the outer surface of the vehicle body cover 30. (4) The air passage 34k only needs to allow air to enter and exit. In addition to taking outside air into the vehicle body cover 30, the air inside the vehicle body cover 30 may be discharged to the outside. (5) The tongue-shaped piece 34g may be any shape as long as it bends in or out of the vehicle body cover 30 to serve as a wind guide plate for guiding cooling air. For example, air passage 3
The direction of the tongue-shaped piece 34g is set in accordance with the direction of air flow from and to 4k.

[0039]

According to the present invention, the following effects are exhibited by the above configuration. Claim 1 forms a substantially U-shaped cut in the vehicle body cover that covers the vehicle body, and bends the obtained tongue-like piece inward or outward,
By fixing the tongue-shaped piece to the vehicle body at the bending angle, an air passage through which air enters and exits from the vehicle body cover is formed. Therefore, an air passage having a simple configuration can be easily provided in the vehicle body cover. In addition, since a simple molding die is used, and the shape and position of the air passage are not restricted, the degree of freedom in design is increased.

According to a second aspect of the present invention, a hook is provided at the tip of the tongue, and the hook is hooked to the vehicle body to fix the tongue to the vehicle body. Even in the case where the positions are relatively shifted, the position shift can be absorbed by the bending angle or hook portion of the tongue-shaped piece, and a good hooking state can be maintained. Therefore, it is possible to satisfactorily assemble the vehicle body cover which is difficult to produce the manufacturing accuracy. Furthermore, even if the vehicle body cover is deformed, a similarly good latching state can be maintained.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the motorcycle according to the present invention.

FIG. 3 is an exploded perspective view of the vehicle body frame according to the present invention.

FIG. 4 is a vehicle body frame and a power unit according to the present invention;
Left side sectional view around the accessory storage box, step floor and under cover

FIG. 5 is a plan view showing a front frame, an engine, an accessory storage box, a step floor, and an under cover according to the present invention;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 4;

FIG. 7 is a sectional view taken along line 7-7 of FIG. 4;

FIG. 8 is a detailed view of a second cross member mounting portion according to the present invention.

FIG. 9 is a configuration diagram of a rear lower structure of the under cover according to the present invention.

FIG. 10 is a sectional view of a rear lower structure of the under cover according to the present invention.

FIG. 11 is an explanatory view showing a method of forming an under cover according to the present invention.

FIG. 12 is a modified example of the rear lower structure of the under cover according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Motorcycle, 11 ... Body frame, 22 ... Engine, 30 ... Body cover, 34 ... Under cover, 34a ...
Bottom plate part, 34e ... thin part, 34f ... cut, 34g ...
Tongue-like piece, 34i: hook, 34k: air passage, 53: radiator.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takefumi Okubo 1-4-1, Chuo, Wako, Saitama Prefecture Inside Honda R & D Co., Ltd. (72) Kazunori Kawame 1-4-1, Chuo, Wako, Saitama No. In Honda R & D Co., Ltd.

Claims (2)

[Claims] 1. A substantially U-shaped cut is formed in a vehicle body cover for covering a vehicle body, the obtained tongue is bent inward or outward, and the tongue is fixed to the vehicle body at the bending angle. A body cover structure for a motorcycle in which an air passage through which air flows in and out of the body cover. 2. The tongue-shaped piece according to claim 1, wherein a hook is provided at the tip of the tongue-shaped piece, and the hook is hooked to the vehicle body to fix the tongue-shaped piece to the vehicle body. Body cover structure for motorcycles.