JPH04331685A - Body front structure of scooter-type motorcycle - Google Patents

Abstract

PURPOSE:To provide a scooter-type motorcycle front body structure that is preventing a clearance in a split line and any slippage of the center and capable of avoiding any drop in appearance and of securing an article storage space. CONSTITUTION:When the circumference of a head pipe 2a is surrounded with a longitudinal two-split type front cover 13 consisting of a front cover 82 and a rear cover 81, a longitudinal split line L1 of these front and rear covers 82, 81 is formed into almost dog-leg form looking at side view. The front cover 82 is formed into a vertical two-piece construction consisting of an upper cover 86 and a lower cover 87, and a vertical split line L2 of both these upper and lower covers 85, 87 is butted to the longitudinal split line L1 at a more upper part P2 than a bending part P1 of the line L1, while the lower cover 87 is composed of left and right walls 87c in succession to the front part and a ceiling wall 87e connecting upper edges themselves of both these left and right walls 87c and having an opening 87f of almost U-shaped form looking at plane view.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides a front body structure for a scooter-type motorcycle in which a head pipe that supports a front fork is surrounded by a front cover that is divided into two parts: a front cover and a rear cover. Regarding.

0002

2. Description of the Related Art In a scooter type motorcycle, a head pipe is surrounded by a front cover. This front cover consists of a front cover that covers the front side of the head pipe,
The front cover may be divided into upper and lower parts, an upper cover and a lower cover.

0003

However, since the rear cover of the front cover generally constitutes a footrest, a relatively large footrest load acts on this rear cover. When the front cover is divided into two parts, front and rear, and the front cover is divided into upper and lower parts, as in the above conventional structure, the shape of each cover,
Depending on the dimensions and the combination of the front-rear dividing line and the upper-lower dividing line, the foot load may create a gap in the dividing line, and the center of the cover may be misaligned with the center of the vehicle, which may deteriorate the overall appearance. There is. In addition, in order to solve the problem of the above-mentioned gaps, it is possible to increase the rigidity of each cover, but depending on the structure, the space for storing items may be sacrificed due to reinforcing ribs arranged inside the cover. There are concerns that this will happen. The present invention has been made in view of the above-mentioned conventional situation, and is a front body of a scooter-type motorcycle that can prevent a deterioration of the appearance by preventing gaps between dividing lines and misalignment of the center, and can also secure space for storing goods. The purpose is to provide structure.

0004

[Means for Solving the Problems] The present invention provides a front and rear body of a scooter type motorcycle in which a head pipe that supports a front fork is surrounded by a front cover that is divided into two parts: a front cover and a rear cover. In the structure, the front and rear dividing lines of the front and rear covers are formed into a substantially dogleg shape when viewed from the side, and the front cover is divided into upper and lower halves of an upper cover and a lower cover. The dividing line is brought into contact with the front-rear dividing line above the bend of the line, and the lower cover is connected to the left and right walls that are continuous at the front and the upper edges of the left and right walls. and a ceiling wall having a substantially U-shaped opening in plan view.

[0005]

[Operation] According to the vehicle body front structure according to the present invention, the vertical dividing line of the upper and lower covers collides with the front-rear dividing line above the bending part of the line, and the ceiling wall of the lower cover A U-shaped opening is formed in the opening. Therefore, the part of the lower cover near the front-rear dividing line is elongated and has a shape that is easily elastically deformed.As a result, when the above-mentioned foot load is applied, the area near the bent part of the front-rear dividing line of the front and rear covers is elastically deformed. This absorbs the foot load, and as a result, gaps are less likely to form at each dividing line. Furthermore, although there is an opening in the rear part of the ceiling wall of the lower cover, the front part remains as it is, so the upper and lower cover mating parts of the front cover have their ends connected to the ceiling wall of the lower cover. It has a double structure with the upper cover and the upper cover, and the rigidity of this part is high. Therefore, it becomes difficult for the center of the portion to be misaligned with the center of the vehicle. Furthermore, since an approximately U-shaped opening is formed in the ceiling wall of the lower cover, articles can be placed in the opening, and a space for accommodating articles can be secured.

[0006]

Embodiments Hereinafter, embodiments of the present invention will be explained with reference to the drawings. 1 to 9 are diagrams for explaining the front body structure of a scooter type motorcycle according to an embodiment of the present invention,
1, 2, and 3 are side views, top views, and front views of the structure of the embodiment, and FIGS. 5 and 6 are side views, rear views, and FIG. 7 of the rear cover.
, 8 and 9 are sectional views of essential parts, and FIG. 9 is a left side view of the motorcycle of this embodiment.

In the figure, reference numeral 1 indicates a scooter-type motorcycle in which the structure of this embodiment is adopted, and a body frame 2 of this
is the so-called underbone type, and the head pipe 2
The upper end of the main frame 2b, which is approximately L-shaped in side view, is connected to a, and the front ends of the pair of left and right side frames 2c are connected to the lower end of the main frame 2b, and the side frames 2c are raised upward and further rearward. It has an extended structure. Further, a footboard 14 is mounted at the connection portion between the main frame 2b and the side frame 2c, thereby forming a footrest 15.

The head pipe 2a connects the front wheel 3 at the lower end.
A steering shaft 4a of the front fork 4 is pivotally supported so as to be freely steerable left and right, and a support post 5a of the handlebar 5 is fixed to the upper end of the steering shaft 4a. Further, a unit swing type engine unit 6 is suspended and supported near the rear bent portions of the left and right side frames 2c so as to be able to swing up and down, and a rear wheel 7 is attached to the rear end of the transmission case 6a of the engine unit 6. Supported. In addition, the engine 6
A seat 8 is mounted above the rear wheels 7, and a storage box 9 and a fuel tank 10 are mounted below the seat 8.

The rear part of the motorcycle 1, that is, the lower part of the seat 8, is surrounded by a side cover 11 and a pair of left and right side molding covers 12, and the front part, that is, the vicinity of the head pipe 2a, is surrounded by a front cover 13. ing. Further, the handlebar 5 is surrounded by a handlebar cover 16, a headlight 17, and left and right direction indicator lights 18.

[0010] The front cover 13 has a structure in which it is divided into two parts: a rear cover 81 that surrounds the rear side of the head pipe 2a, and a front cover 82 that surrounds the front side.
The front-rear dividing line L1 of the rear and front covers 81 and 82 has a substantially doglegged shape when viewed from the side. In addition, the front cover 8
2 and the rear cover 81 are coupled to each other in the following manner. That is, the locking rib 83c of the rear cover 81 formed along the front-rear dividing line L1 and the front cover 8
Insert the locking ribs 87a of the second locking ribs 87a alternately, that is, in a staggered manner, into the locking holes of the other side, and insert the upper left and right upper fixing seats 84d and the lower left and right lower fixing seats 83d of the rear cover 81 forward, respectively. They are connected to the upper fixing boss 86b and lower fixing boss 87b of the section cover 82 by bolting and fixing them.

[0011] The rear cover 81 is attached to the head pipe 2a.
The leg shield 83 is brought into contact with the rear surface of the inner cover 84 located on the rear side so as to surround the inner cover 84, and the two are joined by welding at the flange portion 84b. Further, an upper portion 83a of the leg shield 83 bulges rearward and overlaps with a lower portion 84a of the inner cover 84 in the front and back, and an inner box 85 is formed by this overlapping portion. This rear cover 81 is attached to the vehicle body frame 2 in the following manner. That is, the central fixing seat 84c at the center of the inner cover 84 is connected to a rear bracket 88a formed on the rear surface of the head pipe 2a.
At the lower end of the leg shield 83, the left and right fixed seats 8
3b are attached to the vehicle body frame 2 by bolting and fixing them to foot brackets 36 fixed to the main frame 2b, respectively. The left and right fixing seats 83b are fastened together with the front end of the footboard 14.

The front cover 82 also includes an upper cover 86.
The upper and lower covers 86 and 87 have a vertical dividing line L.
2 is inclined rearward and obliquely upward, and abuts the front-rear dividing line L1 at an abutment point P2 located above the bending point P1. This upper cover 86 is
It is attached to the vehicle body frame 2 in the following manner. That is, a central fixing seat 86a formed at the center of the front surface of the upper cover 86 is connected to an upper bracket 88b fixed to the upper front end of the head pipe 2a, and left and right fixing seats formed on the left and right sides of the front surface of the upper cover 86 are connected to the upper bracket 88b fixed to the upper front end of the head pipe 2a. The seats 86b are attached to the vehicle body frame 2 by bolting and fixing them to the lower brackets 35 fixed to the front lower part of the head pipe 2a.

The lower cover 87 connects the left and right walls 87c whose front parts are continuous, an inclined wall 87d extending rearward and downward from the lower edges of these walls, and the upper edges of the left and right walls 87c. A ceiling wall 87e is formed with an opening 87f that is approximately U-shaped in plan view. As a result, the ceiling wall 87e has a substantially U-shape in plan view, but a flat portion 87g having a relatively large area remains near the bottom of the U-shape. Further, a waterproof wall 87h is formed in an upright position at the edge of the opening 87f, and furthermore, on the left side of this waterproof wall 87h,
A pair of fixed seats 87i are formed at the right rear end so as to rise upward. The left and right fixing seats 87i are bolted to fixing bosses 84e formed on the front surface of the inner cover 84 of the rear cover 81.

The upper cover 86 is formed to cover the ceiling wall 87e of the lower cover 87 and the upper front part of the inner cover 84. This upper cover 86
A plurality of locking ribs 86c are formed to protrude downward from the inner peripheral edge of the lower cover 87, and each of the locking ribs is connected to a locking hole 87j formed on the outside of the waterproof wall 87h of the lower cover 87 and the flat surface. It is inserted and locked into a locking recess 87k formed in the portion 87g. Further, a receiving shelf 87m is formed on the inner surface of the central tip of the lower cover 87 so as to extend rearward, and an insertion hole 87n is formed above the receiving shelf 87m. A connecting rib 86d formed at the tip of the upper cover 86 is inserted into the insertion hole 87n, and is locked to the upper edge of the insertion hole 87n.

A support groove 87p is formed on the inner surface of the front edge of the opening 87f of the lower cover 87 so as to open toward the rear of the vehicle.
It is supported by a support piece 33d formed at the tip of the 2. This inner fender 32 is the head pipe 2
It is composed of a front fender 33 that covers the lower part of the front fender 33 and a rear fender (not shown) that covers the lower part of the footboard 14 from the rear cover 81. The portion holding portion 33i is supported by a support piece 35a extending from the lower bracket 35.

Next, the effects of this embodiment will be explained. When installing the front cover 13 having the structure of this embodiment, first the inner cover 84 and the leg shield 83 are attached.
The rear cover 85, which is an assembly with the head pipe 2a, is attached to the head pipe 2a.
, from the rear side of the main frame 2b, and is attached to the vehicle body frame 2 by tightening bolts to the rear bracket 88a of the head pipe 2a and the foot bracket 36.

Next, the lower cover 87 is attached as follows. First, the support groove 87p of the ceiling wall 87e of the lower cover 87 is attached to the support piece 33d of the inner fender 32, and the locking rib 87a of the lower cover 87 and the locking rib 83c of the leg shield 83 are alternately connected to the other side. Insert the fixing seats 87i at the top of the lower cover 87 into the fixing bosses 84 at the top of the inner cover 84.
In e, the lower fixing bosses 87b of the lower cover 87 are bolted and fixed to the lower fixing seats 83d of the leg shield 83, respectively.

Finally, the upper cover 86 is attached as follows. First, the connecting rib 86 of the upper cover 86
d into the receiving shelf 87m portion of the lower cover 87 from above, rotate the upper cover 86 downward around the connecting rib 86d portion, and lock each locking rib 86c into the lower cover 87.
The upper fixing boss 86b is further bolted and fixed to the upper fixing seat 84d of the inner cover 84, and the center fixing seat 86a is inserted into the upper bracket 88b, and the left and right fixing seats 86b to lower bracket 3
5. Tighten and fix the bolts respectively.

As described above, according to the structure of this embodiment, when attaching the lower cover 87, the support piece 33d of the inner fender 32 is inserted into the support groove 87p of the lower cover 87, so that the lower cover 87 can be temporarily placed. It is easy to assemble. Furthermore, when attaching the upper cover 86, the connecting rib 86d of the upper cover 86 is inserted into the receiving shelf 87m of the lower cover 87, so that the upper cover 86 can be positioned easily and reliably, and the ease of assembly is improved.

Further, according to the vehicle body front structure of this embodiment, the upper and lower covers 86 and 87 are arranged so that the upper and lower dividing line L2 of both covers is the front part, and the front and rear dividing line L1 of the rear covers 82 and 81 is the same as that line. Position P2 above bending point P1 of L1
A U-shaped opening 87f is formed in the ceiling wall 87e of the lower cover 87. Therefore, the portion of the lower cover 87 near P2 is elongated and has a shape that is easily elastically deformed, so that when the foot load is applied, the portion of the lower cover 87 close to P2 is bent at the bending point P1 of the front-rear dividing line L1 of the front and rear covers 82 and 81. The vicinity is elastically deformed to absorb the foot-borne load, and as a result, gaps are less likely to be formed between the dividing lines L1 and L2, and the appearance is improved.

Furthermore, although the ceiling wall 87e of the lower cover 87 has an opening 87f in the rear portion, the front portion remains as it is, forming a flat portion 87g. Therefore, the joint portion of the upper and lower covers 86 and 87 of the front cover 82 has a double structure at the tip thereof, consisting of the flat portion 87g and the upper cover 86, and the rigidity of this portion is high. . Therefore, the center of the tip of the front cover 82 is less likely to be misaligned with the center of the vehicle, and the appearance is also improved in this respect.

Furthermore, the ceiling wall 8 of the lower cover 87
Since an approximately U-shaped opening 87f is formed in 7e, articles can be placed in the opening 87f, and a space for accommodating articles can be secured. Also, since a waterproof rib 87h is formed in an upright manner around the periphery of this opening 87f, the inner fender 3
The muddy water etc. that splashed upward from the opening etc. of 2 is on the ceiling wall 87.
It is possible to prevent the liquid from flowing forward along the line e.

[0023] In the above embodiment, the inner box 8
5 had a structure with an open top, which is shown in Figure 10.
As shown in modifications shown in FIGS. 1 to 12, the structure may include a lid. FIG. 10 is a rear view with the lid removed, FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG. 10, and FIG. 12 is a cross-sectional side view of the inner box portion.
The rear cover consists of a single piece of leg shield 91,
This is an example in which a box recess 92 is integrally formed in the upper part of the leg shield 91, and an opening 92a of the recess 92 is opened and closed by a lid 93.

The right half of the box recess 92 is set to a depth near the rear surface of the head pipe 2a, while the left half is set to a depth protruding forward from the front surface of the head pipe 2a. It is being done. Also, this box recess 92
The bottom surface 92b is sloped so that the rear side is slightly lower, and four drain grooves 92c are formed in the bottom surface 92b, the slope being larger than the bottom surface. Further, a seal groove 92d is formed in the periphery of the opening 92a except for the bottom portion, and a seal member 94 is inserted into the seal groove 92d, and the periphery of the lid 93 is pressed into contact with the seal member 94. It has become.

A pair of left and right hinge portions 93a are formed at the lower edge of the lid 93, and a hinge member 95 fixed to the hinge portions is attached to a support surface 92e formed at the bottom of the opening 92a. Fixed with bolts. Further, a lock cylinder 96 is fixed to the center of the upper edge of the lid 93, and by operating a key on the lock cylinder 96, a locking claw 96a in the cylinder 96 is formed on the top wall of the box recess 92. The locking piece 92f is engaged with the locking piece 92f.

[0026]

As described above, according to the vehicle body front structure of the scooter type motorcycle according to the present invention, the vertical dividing line of the upper and lower covers is the front part, the front part dividing line of the rear cover and the bent part of this line. Since the lower cover is configured so that it abuts further upwards, and a U-shaped opening is formed in the ceiling wall of the lower cover, the portion of the lower cover near the abutment point is elongated and has a shape that is easily elastically deformed, resulting in a lower foot load. The weight can be absorbed by elastic deformation near the bends of the front and rear dividing lines of the front and rear covers, preventing gaps between each dividing line, and since the front part of the ceiling wall of the lower cover remains, this part is Since it has a double structure with the cover, the rigidity of this part is increased, and it is possible to prevent the center of this part from shifting from the center of the vehicle, which has the effect of improving the appearance. Furthermore, since a roughly U-shaped opening is formed in the ceiling wall of the lower cover, articles can be placed in the opening, which has the effect of ensuring a space for accommodating articles.

[Brief explanation of drawings]

FIG. 1 is a side view showing the front structure of a scooter-type motorcycle according to an embodiment of the present invention.

FIG. 2 is a plan view of the structure of the above embodiment.

FIG. 3 is a front view of the structure of the above embodiment.

FIG. 4 is a side view of the rear cover of the structure of the above embodiment.

FIG. 5 is a rear view of the rear cover.

FIG. 6 is a sectional view of a main part of the structure of the above embodiment.

FIG. 7 is a sectional view of a main part of the structure of the above embodiment.

FIG. 8 is a sectional view of a main part of the structure of the above embodiment.

FIG. 9 is a left side view of a motorcycle equipped with the structure of the above embodiment.

FIG. 10 is a rear view showing a modification of the inner box portion of the structure of the above embodiment.

11 is a sectional view taken along the line XI-XI in FIG. 10. FIG.

FIG. 12 is a cross-sectional side view of the above modification.

[Explanation of symbols]

1　Motorcycle 2a head pipe 4 Front fork 13 Front cover 81 Rear cover 82 Front cover 86 Upper cover 87 Lower cover 87c Left and right walls 87e Ceiling wall 87f opening L1 Front and rear dividing line L2 Upper and lower dividing line P1　Bending point P2 Ending point

Claims (1)

[Claims] Claim 1. A vehicle body front structure of a scooter type motorcycle in which a head pipe that supports a front fork is surrounded by a front cover that is divided into front and rear parts, which is composed of a front cover and a rear cover. The front and rear dividing line of the rear cover is formed into a substantially dogleg shape when viewed from the side, and the front cover is divided into upper and lower halves of an upper cover and a lower cover, and the upper and lower dividing lines of the upper and lower covers are aligned with the front and rear dividing line. Abutting the lower cover above the bent part of the line, and connecting the lower cover to the left and right walls that are continuous at the front,
The upper edges of the left and right walls are connected to each other, and approximately U
A front body structure of a scooter-type motorcycle, characterized by comprising a ceiling wall having a letter-shaped opening.