CN1230500A - Mounting structure of front cover - Google Patents

Abstract

Front cover mounting structure. A head pipe 6 is arranged at the front part of the vehicle body, and the head pipe 6 supports a rotatable front fork 2, and the front fork 2 supports the front wheel 1. The vehicle body front is covered from the front with a front cover 21 and from the rear with a leg cover 22 . The nose portion 31 of the front cover 21 protrudes forward less than the movable front fender 25, and the left and right side lower portions 33 protrude below the nose portion 31. The front cover 21 is not supported on the head pipe 6, but The periphery of its back side is directly connected with the periphery of the leg shield 22, and the two parts are screwed to each other in the periphery. The installation structure of the front cover can increase the storage space inside the front cover, and can reduce the number of parts.

Description

Front cover installation structure

The present invention relates to a front cover mounting structure for a motorcycle or a tricycle.

In the prior art, in Japanese Patent Application Laid-Open No. 2-279482, a front cover structure is disclosed, that is, the leg shield is installed on the rear side of the head pipe, and the front cover is installed on the front side of the head pipe from the head pipe to the front of the head pipe. On the strut protruding from the front, the front portion of the front cover is stretched out forward, and the bottom is also used as a front fender. In addition, the left and right lower parts of the front cover are covered by separate left and right cover members attached to the left and right front parts of the leg cover.

In the above structure, since the front cover also serves as the front fender, it must be shaped like a bird's beak and protrudes forward. Small, cannot accommodate large items such as batteries.

Since the front of the front cover protrudes greatly, making the whole larger, it is necessary to extend the strut supporting it from the head pipe to the front. Due to the existence of the strut, the part of the above-mentioned space that can accommodate items becomes narrower. .

In addition, when attaching the front cover to the struts, the struts are welded to the head pipe in advance during the assembly process of the frame. Therefore, the assembly accuracy of the frame directly affects the joint accuracy of the front cover and the leg guards, and it is not easy to improve the joint. precision.

In order to solve the above-mentioned problems, the front cover installation structure of the present invention is suitable for installing the front cover on the front side of the head pipe that supports the steering shaft of the front wheel in a freely steerable manner, and on the vehicle where the leg shield is installed on the rear side. Above the front wheel, a movable front fender that rotates integrally with the front wheel is integrally provided with the front cover. The rear side of the nose is provided with left and right side parts protruding below the nose, and the back side periphery of the front cover including the side parts is butt-bonded with the front side periphery of the leg shield.

Since the front cover and the movable fender are divided into separate parts, the front protrusion of the nose at the front is shorter than that of the front fender, and left and right protruding downwards of the nose are provided on both sides. Therefore, it is not necessary to make the nose into a slender and protruding shape as in the prior art, but it can be formed into a bulging shape upwards, and by protruding the left and right side parts downward near the leg guards, the front There is more space between the hood and the shin guard.

In addition, since the surroundings of the back side including the side parts of the front cover are combined with the surroundings of the front surface side of the leg shields, the covers are directly combined with each other, and do not need to be attached to the struts protruding from the head pipe as in the prior art. Therefore, Without being affected by the frame assembly accuracy, the joint accuracy of the front cover and the leg cover can be improved, and the number of parts can be reduced by omitting the stay.

In addition, since there is no support bar, the effective volume for storing items in the above-mentioned space can be further increased, and large items such as batteries can be accommodated.

FIG. 1 is a front side view of the vehicle body with the front cover 21 attached.

Fig. 2 is an overall side view of a motorcycle to which the embodiment is applied.

Fig. 3 is a schematic sectional view taken along line 3-3 in Fig. 2 .

FIG. 4 is a front view of the front cover 21 .

FIG. 5 is a rear view of the leg shield 22 .

Fig. 6 is a cross-sectional view showing a bonded state along line 6-6 in Figs. 4 and 5 .

Fig. 7 is a cross-sectional view showing a bonded state along line 7-7 in Figs. 4 and 5 .

Fig. 8 is a cross-sectional view showing a bonded state along line 8-8 in Figs. 4 and 5 .

Next, an outline of a motorcycle to which this embodiment is applied will be described first with reference to FIG. 2 . The upper end of the front fork 2 supporting the front wheel 1 is connected to the spindle tube 4 through the bottom bridge 3, and the steering operation is performed by the handle 5 provided at the upper end.

The mandrel tube 4 is rotatably supported by the head tube 6, and the head tube 6 is arranged at the front end of the main frame 7. The main frame 7 is in the form of a spine in the center of the vehicle body, extending obliquely to the rear, and connecting a pair of right and left sides at the center of the main frame 7. Each front end portion of the rear frame 8.

The left and right rear frames 8 extend substantially horizontally, then extend obliquely further rearward, and support the cargo box 9 here. The capacity of packing box 9 is bigger, can accommodate the large articles such as helmet 10, and its top opening is opened and closed by vehicle seat 11. Armrests 12 protruding laterally are supported on the respective rear ends of the left and right rear frames 8 .

Below the main frame 7, the forward-leaning engine 13 is supported on a box-shaped pivot support plate 14, which surrounds the middle part of the main frame 7 and the lower end of the main frame 7. stick out downwards.

The front end of the rear swing arm 15 is rotatably supported on the pivot support plate 14 by the pivot 16, and the rear wheel 17 is supported at its rear end. A left and right pair of buffers 18 are provided between the rear portion of 8 .

The body was covered with various hoods. The handle 5 is covered by a handle cover 20 . The front side of the head pipe 6 is covered by a front cover 21 . The area from the rear side of the head pipe 6 to the storage box 9 is covered by a leg cover 22 . The front of the storage box 9 is covered by a box cover 23 . The rear cover 24 covers the underside of the seat 11 including most of the sides of the storage box 9 behind the box cover 23 .

Above the front wheel 1, a front fender 25 integrally movable with the front fork 2 is attached to the bottom axle 3, and a fork cover 26 is attached from the outside to the part where the center part is pinched by the left and right front forks 2. , and cover the outside of the front fork 2.

Next, the front cover 21 and the leg cover 22 will be described. FIG. 1 is a front side view of the vehicle body with the front cover 21 attached. Fig. 3 is a schematic sectional view taken along line 3-3 in Fig. 2 . FIG. 4 is a front view of the front cover 21 . FIG. 5 is a rear view of the leg shield 22 . Fig. 6 is a cross-sectional view showing a bonded state along line 6-6 in Figs. 4 and 5 . Fig. 7 is a cross-sectional view showing a bonded state along line 7-7 in Figs. 4 and 5 . Fig. 8 is a cross-sectional view showing a bonded state along line 8-8 in Figs. 4 and 5 .

In these figures, the front cover 21 is formed of ABS resin, and a slit 30 is formed in the center of the upper part. The central part protrudes forward gradually downward, and the lower central part is formed as a nose part 31 protruding above the front fender 24 in the shape of an eaves. .

The side parts 32 go around from the front to both sides of the vehicle body and overlap with the front edge of the leg shield 22 .

In each side portion 32 of the front cover 21, an upper mounting portion 34, an intermediate mounting portion 35, and a lower mounting portion 36 are formed, and in the mounting portions formed corresponding to the side of the leg shield 22 described later, the rear mounting portion 34 can be used from the rear of the vehicle body. The bolts are secured.

As shown in FIG. 3 , a large space 27 is formed between the front cover 21 and the leg cover 22 , and the battery 28 is housed in the space 27 . In this space 27 , electrical items such as CDIs and relays not shown in the figure are suitably accommodated. In addition, no stays or the like projecting forward from the head pipe 6 for supporting the front cover 21 are provided, and the front cover 21 is not joined to the head pipe 6 .

As shown in FIG. 4 , the upper mounting portion 34 , the middle mounting portion 35 and the lower mounting portion 36 protrude integrally in a rib shape toward the back of the front cover 21 respectively, and a nut member 37 ( FIG. 6 ) is attached to the front end thereof.

As shown in FIG. 5 , the leg guard 22 is molded with a suitable resin such as polypropylene, and the central portion 40 on the front side is formed as a rearward convex concave portion for accommodating the head pipe 6 , and is formed parallel to the head pipe 6 in the vertical direction. .

Bosses 42 , 43 , 44 corresponding to upper mounting portion 34 , intermediate mounting portion 35 , and lower mounting portion 36 are formed around both side portions 41 of central portion 40 on left and right sides, respectively.

As shown in FIGS. 6 to 8 , each boss portion 42 , 43 , 44 abuts against the protruding ends of the upper mounting portion 34 , the middle mounting portion 35 , and the lower mounting portion 36 on the front cover 21 side. (That is, Fig. 5 shows the side) is fastened with bolt 38.

The rear side of the central portion 40 of the leg shield 22 is formed to cover the roof portion 45 of the main frame 7 in a saddle shape, and is fixed to the main frame 7 with bolts 46 on the side near the connecting portion of the head pipe 6 and the main frame 7 . The front end of the box cover 23 is joined to the front end of the box cover 23 by the recesses 47 provided on the left and right sides of the rear end.

The action of this embodiment will be described below. Hold the head pipe 6 and cover the leg shield 22 toward the main frame 7 from the rear, and fix it on the main frame 7 with bolts 46 .

Then, the front cover 21 is covered from the front of the head pipe 6, and the upper mounting portion 34, the middle mounting portion 35, and the lower mounting portion 36 are respectively abutted against the bosses 42, 43, 44 of the corresponding leg shield 22, and the The rear of leg shield 22 is screwed with bolt 38, and front cover 21 and leg shield 22 are integrated.

At this time, the front cover 21 is not attached to the head pipe 6, but is attached to the leg shield 22. Therefore, compared with the case where the front cover 21 is attached to the head pipe 6 via a stay, it is not affected by the assembly accuracy of the frame and can be mounted at a higher level. The front cover 21 and the leg cover 22 are joined with precision, and the mating is relatively easy, and the installation workability is improved. In addition, the struts can be omitted, reducing the number of parts.

Since the movable front fender 25 is separately provided, the front cover 21 is provided with a nose portion 31 with a smaller protrusion amount than the nose portion 31 and left and right side lower parts 33 protruding below it, so the front cover 21 and the leg guard are formed on the front cover 21. The space 27 between the covers 22 is large, so that large items such as batteries 28 can be accommodated.

In addition, since a stay or the like for supporting the head pipe 6 of the front cover 21 is unnecessary, the article storage volume in the space 27 can be effectively used.

Claims (2)

1. Front cover mounting structure, it is suitable for installing the front cover on the front side of the head pipe that steerably supports the steering shaft of the front wheel, and installing the leg guard cover on the rear side. A movable front fender that rotates integrally with the front wheel is separately provided. The front portion of the front cover is formed as a nose that is shorter than the front end of the front fender and protrudes forward. There are left and right side parts extending below the nose, and the back side periphery of the front cover including the side parts is butt-bonded with the front side periphery of the leg shield. 2. The front cover mounting structure according to claim 1, wherein the battery is accommodated in a space formed between the front cover and the leg cover.

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