JP2521254B2 - Scooter type motorcycle and legged shield matching structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a leg shield mating structure for a scooter type motorcycle or a motorcycle, and particularly, to prevent deformation of the leg shield body in the vehicle width direction. Regarding the structure.

[Conventional technology]

Generally, in a scooter-type motorcycle, the front half of the main frame is bent downward to form a concave shape, and a flat foot plate is attached to the bottom of the depression and a leg shield is attached to the front rising portion. I am trying. This leg shield is generally composed of a main body portion and a front cover portion, and is for covering the front of the legs of the occupant and the vicinity of the pivotal support portion of the front fork to improve the appearance.

As an example of such a combined structure of the main body portion and the front cover portion of the leg shield, there is conventionally one shown in FIG. FIG. 7 is a cross-sectional plan view of the above-mentioned mating structure, in which 31 is a leg shield, which is composed of a leg shield main body 32 and a front cover 33, and the leg shield main body 32 is the front side of the main frame. A frame cover 32a, which is fixed to the rising part and the upper end of the rising part and covers the rear of the steering shaft cylinder 34 that pivotally supports the front fork, and a leg cover 32b extending left and right from here. . The front cover 33 is for covering the front of the frame cover 32a and is formed in a substantially semi-circular shape, and both side ends 33a of the front cover 33 are engaged with the engaging portion 32c of the frame cover 32a. Is formed to engage with.

[Problems to be solved by the invention]

By the way, since the leg shield is generally made of resin, it is often deformed into a shape different from the normal shape due to residual strain during molding before being attached to the frame. It is generally corrected when it is attached to the. However, in the conventional structure shown in FIG. 7, since the frame cover 32a and the front cover 33 are semicircular, the strength against deformation in the vehicle width direction is not so great. Therefore, for example, when the frame cover 32a or the front cover 33 is expanded in the vehicle width direction due to residual strain or the like, the strain is not corrected even if these are mounted on the frame, and as shown by the broken line in FIG. It tends to remain deformed. In addition, even when mounted in a regular shape, there is a problem that it is easily deformed by a force in the vehicle width direction.

Therefore, the present invention has been made in order to solve the problems of the above-described conventional structure, in which the leg shield can be prevented from being deformed outward in the vehicle width direction, and there is distortion in the vehicle width direction outward before mounting. However, it is an object of the present invention to provide a scooter type motorcycle two-wheeled vehicle leg shield alignment structure that can be surely corrected by mounting.

[Means for solving problems]

A leg shield mating structure for a scooter type motorcycle according to the present invention comprises the leg shield including a leg shield main body and a front cover, and the leg shield main body has a recessed rear portion that covers a front rear portion of the main frame. Frame cover and a leg cover extending to the left and right following the frame cover, and a step is formed at the boundary between the frame cover and the leg cover so that the step falls rearward. At the same time, an engaging piece is formed on the step portion so as to project forward, and a tapered engaging concave portion that is open toward the front of the vehicle and that extends forward is formed by the engaging piece and the paragraph wall of the step portion. A flat plate-shaped front cover that covers the front of the main frame in front of the frame cover is arranged, and engaging projections are formed on the left and right sides of the front cover by bending them toward the rear of the vehicle body. Form a pair of left and right engaging grooves on the upper edge A pair of left and right engaging pieces are formed on the upper part of the front cover, and the engaging projections and the engaging pieces of the front cover are respectively engaged with the engaging recesses and the engaging grooves of the leg shield main body, The lower part of the front cover is bolted and fixed to the main frame.

[Action]

In the scooter-type motorcycle two-wheeled vehicle leg shield mating structure according to the present invention, the front cover has a flat plate shape, and therefore, when the front cover is attached to the leg shield body, the rigidity against deformation of the entire leg shield outward in the vehicle width direction. Is greatly improved, and deformation outside the vehicle width direction can be prevented, and if the leg shield body is deformed due to residual strain before mounting, this deformation can be corrected by mounting the front cover.

Since the step portion is formed on the leg shield body so as to be stepped backward, the depth of the frame cover becomes shallower, and the rigidity of the leg shield body increases accordingly.

Also, since the engagement recess is tapered, the work of attaching the front cover is easy, and by fixing the front cover to the main frame, the leg shield body is automatically fixed to the main frame, From this point as well, the mounting work is easy. In addition, deformation of the leg shield body and relative movement with the front cover are automatically prevented.

Furthermore, since the front cover and the leg shield body are fixed to the main frame, the front cover and the leg shield body can be prevented from being displaced from the center of the vehicle body.

Further, since the upper part of the front cover is engaged with the upper part of the leg shield body, the number of fixing screws of the front cover can be reduced accordingly, and the fixing work is also easy.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 are views for explaining a leg shield alignment structure of a scooter type motorcycle according to an embodiment of the present invention. In the figure, 1 is a scooter type motorcycle, and a main frame 2 of the motorcycle 1 is made of steel pipe, and a front half of the main frame 2 has a bottom portion 2a, a front rising portion 2b, and a rear rising portion 2c. A concave footrest plate attachment portion is formed, and a rear side rising portion 2c is formed in the rear half portion, and an upper side portion 2e extending horizontally is formed. A front fork 4 for supporting a front wheel 3 is pivotally supported on a steering shaft cylinder 2d connected to the upper end of the front rising portion 2b, and a rear wheel 5 is provided on a lower end of the rear rising portion 2c.
Is supported by a swing arm integrated engine unit 6. A seat 7, a fuel tank 8, a lubricating oil tank (not shown), etc. are mounted on the upper side portion 2e, and a side cover 20 including a cover body 9 and a skirt 10 for covering these is provided outside the tanks. Is provided.

On the upper surface of the bottom portion 2a of the main frame 2, there is attached a resin-made flat plate-shaped footrest plate 15 for the occupant to place both feet on, and the front rising portion 2b and the steering shaft tube 2d. A leg shield 12 is attached to the. The leg shield 12 is made of resin and includes a leg shield body 16 and a front cover 17.

The leg shield body 16 is composed of a frame cover 16a and leg covers 16b. The upper half of the frame cover 16a is curved in a substantially U-shape toward the rear of the vehicle body. The lower half part has a shape that covers the rear of the front rising part 2b of the main frame 2. Further, the leg cover 16b extends outward from the frame cover 16a in the vehicle width direction,
These lower end portions are placed and fixed on the support stay together with the front portion of the footrest plate 15.

In the upper half of the boundary between the frame cover 16a and the leg cover 16b, a part of the leg cover 16b is dropped to the rear of the vehicle by a paragraph wall 16c '(see FIG. 1). Step portion 16c
Is formed, and engaging pieces 16d are integrally provided so as to project forward at three positions in the vertical direction of the step portion 16c. The engagement piece 16d is U-shaped when viewed from the front, and the engagement piece 16d
The upper and lower lateral sides and the paragraph wall 16c 'of the stepped portion 16c are engaged recesses.
16e is formed, and the engagement recess 16e has a taper shape that opens toward the front of the vehicle and that expands on the front side. Furthermore, an engaging groove 16f for restricting the front, rear, left and right movements of the upper end portion of the front cover 17 is cut out at the upper end of the boundary portion.

The front cover 17 has a substantially rectangular shape and a flat plate shape, and an engaging flange portion which is an engaging convex portion on the left and right sides thereof.
The engagement flange portion 17a is formed so as to be bent rearward of the vehicle, and the engagement flange portion 17a can engage with the engagement recess 16e of the leg shield body 16. Further, an engaging piece 17b is provided on the upper end of the front cover 17 so as to project outward in the vehicle width direction, and the engaging piece 17b is engageable with the engaging groove 16f of the leg shield body 16. . Furthermore, a bolt hole 17c for bolting and fixing the front cover 17 to the bracket 2f fixed to the main frame 2 is formed in the lower portion of the front cover 17.

 Next, the function and effect of this embodiment will be described.

In the structure of the present embodiment, in order to mount the leg shield 12 on the main frame 2, first, the leg shield body 16 is arranged so that the frame cover portion 16a covers the steering shaft tube 2d and the front rising portion 2b. Mount the upper part of part 16a to the mounting hole 16g
The leg shield body 16 is fixed to a bracket fixed to the steering shaft tube 2d by using the above, and the lower end of the leg shield body 16 is fixed to a lateral stay (not shown) fixed to the main frame 2.
Then, in order to mount the front cover 17 next, the engagement piece 17b at the upper end of the front cover 17 is engaged by dropping it into the engagement groove 16f at the upper end of the leg shield body 16 while the front cover 17 is engaged. The engaging flange portion 17a of 17 is inserted into the engaging concave portion 16e of the leg shield body 16 to be engaged, and finally, the mounting hole 17c is used to bolt and fix the bracket 2f.

As described above, in this embodiment, the engagement flange portion 17a of the flat plate-shaped front cover 17 is formed into the engagement recess portion 16e of the leg shield body 16.
The front cover 17 improves the rigidity of the entire leg shield 12 against deformation in the vehicle width direction. That is, for example, when a tensile load is applied in the vehicle width direction, the front cover 17 causes the frame cover portion 16a due to this tensile load.
Therefore, the leg shield 12 can be prevented from being deformed in the vehicle width direction. Conversely speaking, when the frame cover portion 16a is expanded into a shape different from the normal shape due to residual strain at the time of molding, the front cover 17 is attached to the leg shield main body.
By mounting this on 16 while compressing it inward, the above-mentioned deformation can be corrected, the desired shape can be reliably obtained, and the assemblability can be improved and the appearance can be improved.

Frame cover 16a and leg cover 1 of leg shield body 16
Since the stepped portion 16c is formed so as to drop backward at the boundary with the 6b, the depth of the frame cover portion 16a becomes shallower, the rigidity of the leg shield main body 16 becomes higher, and as a result, the deformation amount can be reduced.

Further, since the engaging recess 16e is tapered, the work of attaching the front cover 17 is easy, and by fixing the front cover 17 to the main frame 2, the leg shield main body is secured.
The 16 is automatically fixed to the main frame 2, and the mounting work is easy from this point as well. Further, the deformation of the leg shield body 16 and the relative movement with the front cover 17 are automatically prevented.

Furthermore, since the front cover 17 and the leg shield body 16 are fixed to the main frame 2, it is possible to prevent the front cover 17 and the leg shield body 16 from being displaced from the center of the vehicle body.

Further, since the upper portion of the front cover 17 is engaged with the upper portion of the leg shield body 16, the number of fixing screws for the front cover 17 can be reduced by that much, and the fixing work is also easy.

Further, in the above embodiment, the scooter type motorcycle has been described, but the present invention can be applied to a scooter type motorcycle having one front wheel and two rear wheels.

〔The invention's effect〕

As described above, according to the leg shield mating structure for the scooter type motorcycle according to the present invention, the engagement recess is formed at the boundary between the frame cover and the leg cover of the leg shield body, and the front cover is formed. Since it is formed in a flat plate shape, engaging protrusions are formed on both left and right sides of the front cover, and the engaging protrusions are engaged with the engaging recesses, so that deformation in the vehicle width direction can be prevented. At the same time, the deformation due to the residual strain of the leg shield body can be corrected, and the appearance and the assembling property can be improved.

Since the step portion is formed in the leg shield main body, the depth of the frame cover becomes shallower, the rigidity of the leg shield main body becomes higher, and the deformation can be reduced.

Also, because the engagement recess is tapered, the work of attaching the front cover can be facilitated, and by fixing the front cover to the main frame, the leg shield body is automatically fixed to the main frame, From this point as well, there is an effect that the mounting work can be facilitated, and there is an effect that the deformation of the leg shield body and the relative movement with the front cover can be automatically prevented.

Furthermore, since the front cover and the leg shield main body are fixed to the main frame, there is an effect of preventing the front cover and the leg shield main body from being displaced from the center of the vehicle body. Since the upper cover is engaged, the number of fixing screws for the front cover can be reduced, and the fixing work can be easily performed.

[Brief description of drawings]

1 to 6 are for explaining a leg shield mating structure of a scooter type motorcycle according to an embodiment of the present invention. FIG. 1 is a sectional plan view thereof, and FIG. 2 is an upper end engaging portion thereof. FIG. 3 (a) and FIG. 3 (b) are a side view and a rear view, respectively, of the upper end engaging piece portion of the front cover, and FIG. 4 is a front view showing a combined state of the leg shield and the front cover,
FIG. 5 is an exploded perspective view thereof, FIG. 6 is a side view of a scooter type motorcycle to which the structure of the above embodiment is applied, and FIG. 7 is a sectional view of a conventional mating structure. In the figure, 1 is a scooter type motorcycle, 2 is a main frame, 12 is a leg shield, 16 is a leg shield main body, 16
a is a frame cover, 16b is a leg cover, 16c is a step, 16c 'is a paragraph wall, 16d is an engagement piece, 16e is an engagement recess, 16f is an engagement groove, 1
7 is a front cover, 17a is an engagement flange portion (engagement convex portion), 17b
Is an engaging piece.

Claims (1)

(57) [Claims] 1. A leg shield combination structure for a scooter type motorcycle, comprising a leg shield for covering a front part of an occupant's leg at a front portion of a main frame, wherein the leg shield comprises a leg shield body and a front cover. , The leg shield main body is provided with a rearwardly concave frame cover portion covering the front rear portion of the main frame, and a left portion following the frame cover portion,
A leg cover extending rightward, a step portion is formed at the boundary between the frame cover portion and the leg cover portion, and a step is formed so as to project forward at the step portion. A flat plate that covers the front part of the front of the main frame in front of the frame cover part by forming a tapered engagement recess that opens toward the front of the vehicle and expands the front side by the engagement piece and the paragraph wall of the step part. -Shaped front cover is arranged, engaging projections are formed by bending the left and right parts of the front cover rearward of the vehicle body, and a pair of left and right engaging grooves are formed at the upper edge of the leg shield body. A pair of left and right engagement pieces are formed on the upper portion of the front cover, and the engagement protrusions and engagement pieces of the front cover are engaged with the engagement recesses and engagement grooves of the leg shield body, respectively. A scooter-type automatic motorcycle characterized in that the lower part of the front cover is fixed to the main frame by bolts. Leg shield combined structure of the tricycle.