JPH01195192A - Foot rest of scooter type vehicle - Google Patents

Abstract

PURPOSE:To eliminate necessity of a slide type foot-rest to increase the freedom of positions of arranging mounting boss parts and to prevent generation of any shrinkage by forming cutouts in connections to the longitudinal walls, of reinforcement ribs integrally formed on the lower side of a foot rest surface. CONSTITUTION:A foot rest is an integrated mold made of resin and composed of a foot rest surface 13 and longitudinal wall parts 14. Reinforcement ribs 6 are integrally formed on the lower side of the foot rest surface 13, and cutouts 16b are formed in the connections between the reinforcement ribs 16 and the longitudinal wall parts 14. In addition, cutouts 17a are formed between a shielding wall 17 and the longitudinal wall parts 14. Therefore, any slide type foot rest need not be employed because the longitudinal wall parts 14 can be deformed outward comparatively easily in a process of draw-molding by forming the cutouts 16b and 17a. As the result, no shrinkage may be generated in the process of resin molding, because positions of arranging mounting boss parts 13c, 13d are not restricted and more is not part of suddenly changing thickness in ribs.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is provided in a scooter-type vehicle at a downwardly bent portion between a steering handle of a vehicle body frame and a seat, so that the driver can keep both feet together. Regarding the resin footrest to be placed on,
In particular, the present invention relates to an improvement in the structure of a footrest that can improve the strength of the footrest surface and improve the appearance.

[Conventional technology]

In a scooter type vehicle, a resin-molded footrest is placed on a downwardly bent portion formed in the body frame, and a mounting boss portion formed protruding from the lower surface of the footrest is welded and fixed to the downwardly bent portion. This footrest, which is often fixed to the support stay with mounting bolts, needs to have a structure that can secure a certain level of strength to support the weight of the passenger, so a reinforcing lip is installed on the underside of the footrest. Generally, they are formed integrally.

In addition, in such a footrest, the vertical wall portion is integrally formed by bending the left and right side edges downward, and the downward bent portion of the vehicle body frame is formed into an approximately U-shape when viewed in cross section. Improve appearance by making it less noticeable,
The rigidity of the footrest may be improved. In this case, the vertical wall portion is formed into a curved shape that bulges outward, and the outer end of the reinforcing lip is brought into contact with the inner surface of the vertical wall portion so as to be integrally continuous. .

[Problem that the invention seeks to solve]

By the way, when the above-mentioned curved vertical wall part is provided, as a mold for resin molding, the part located inside the above-mentioned vertical wall part is slid inwardly away from the vertical wall part when cutting the mold.
It is necessary to adopt a so-called slide type. On the other hand, on the inside of this vertical wall part, as mentioned above, a mounting boss part for attaching to the support stay of the vehicle body frame is protruded, but if a sliding type is adopted, the sliding distance of the core type should be ensured. Therefore, it is necessary to shift the mounting boss part inward. As a result, the placement position of the mounting boss is restricted by the sliding distance, the degree of freedom in the mounting position is low, and depending on the design, the amount of overhang from the mounting boss becomes large, which increases the footrest surface. , the problem arises that the strength of the left and right side edges in particular decreases.

In addition, when the outer end of the reinforcing lip is integrally connected to the inner surface of the vertical wall, the wall thickness changes suddenly at this connection.
There is also the problem that it causes sink marks during resin molding, which tends to deteriorate the appearance.

In view of the above-mentioned conventional problems, an object of the present invention is to provide a foot for a scooter type vehicle that eliminates the need for a slide type, increases the degree of freedom in the placement of a mounting boss, and improves the appearance by preventing sink marks. The point is that it provides a platform.

[Means for solving problems]

The present invention provides a footrest for a scooter type vehicle in which vertical wall portions are bent downward on the left and right edges of a flat footrest surface made of resin, and the vertical wall portions are formed in a curved shape. A mounting boss part and reinforcing ribs are integrally formed on the lower surface of the footrest surface,
The mounting boss portion is fixed to a support stay fixed to the downward bent portion, and a notch is provided at the connection portion between the vertical wall portion and the reinforcing rib.

Here, the notch in the present invention is for deforming the vertical wall portion outward to the extent that the mold can be hollowed out as described below, and the depth of the notch is set appropriately to the extent that the vertical wall portion can be deformed. selected. In addition, the above-mentioned reinforcing ribs include both those formed across the entire width of the vehicle on the lower surface of the footrest surface, and those formed only in a part thereof, and the curved shape of the vertical wall section refers to the reinforcing ribs that extend outwardly. Including both convex and inward convex.

[Effect]

According to the footrest for a scooter-type vehicle according to the present invention, since a notch is formed at the connection portion between the inner surface of the vertical wall portion and the outer end of the reinforcing lip, the vertical wall portion is moved outwardly during die cutting. Therefore, even though the vertical wall portion is formed in a curved shape, it is possible to pull it out downward without sliding the mold located inside the vertical wall portion, so-called hollow cutting. As a result, since sliding is not necessary, the placement position of the mounting boss part is not restricted by the mold, which means that the degree of freedom in the placement position of the mounting boss part increases, for example, on the left or right side of the footrest. When the mounting boss portion is provided close to the end portion, the amount of overhang is reduced, and the support strength can be improved accordingly.

Further, in the vertical wall portion, the wall thickness does not suddenly change at the connection portion with the reinforcing lip, and shrinkage during resin molding can be prevented, and the appearance can be improved accordingly.

〔Example〕

, Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 7 are diagrams for explaining a footrest according to an embodiment of the present invention. In FIG. 0, 1 is a scooter type motorcycle in which the footrest of this embodiment is adopted;
The vehicle body frame 2 is composed of a front frame 2a and a pair of left and right rear frames 2b connected to the rear end of the front frame 2a.A front wheel 4 is rotatably supported at the front end of the front frame 2a at its lower end. A front fork 3 is pivotally supported, a steering handle 5 is fixed to the upper end of the front fork 3, and a lower portion of the steering handle 5 is surrounded by a front cover 5a made of resin. Further, a saddle-shaped seat 6 is mounted above the rear part of the rear frame 2b, and the connecting part between the front frame 2a and the rear frame 2b of the vehicle body frame 2 is bent downward, and this downward bent part 2C is Facing handle 5. It is located between 6 seats. Further, the lower part of this seat 6 is surrounded by a side cover 7.

An engine unit 10 formed by integrally connecting an engine body 8 and a transmission case 9 is swingably disposed below the side cover 7, and the front end of the unit 10 is located behind the downward bending portion 2C. It is pivoted at the end. An air cleaner 10a is mounted on the upper surface of the transmission case 9,
The suction port of the air cleaner tOa faces toward the front of the vehicle. Note that 10b is the air cleaner 10a and the engine body 8.
11 is a transmission case 9.
The rear wheel is rotatably supported on the rear end of the vehicle.

A footrest 12 is mounted on the downwardly bent portion 2C. This footrest 12 is an integrally molded resin product, and mainly consists of a flat footrest surface 13 that extends in a horizontal plane, and a vertical wall portion 14 that is bent downward from the left and right edges of the footrest surface 13. It has a roughly U-shape when viewed in cross section. The vertical wall portion 14 is curved downward from the bent portion to be slightly inclined outward, then inward, and convex outward.

Further, the front edge 13a of the footrest surface 13 is curved so as to rise upward and bulge rearward, and is continuous with the front end of the front cover 53. Also, the footrest surface 1
The rear edge portion 13b of the side cover 3 is notched forward in an arc shape and is continuous with the lower edge of the side cover 7. In this case, to the left of the cough trailing edge 13b.

The left and right edges of the lower end of the side cover 7 are fitted and connected to the outside of a stepped portion 13e that is bent inward from the right rear end.

Attachment bosses 13c and 13d are formed protruding from the lower surface of the footrest surface 13 at two locations on the front left 5 and right and at two locations on the left and right rear. Furthermore, a shielding wall 17 is formed on the rear side of the mounting boss portion 13d on the rear side and on the left side when viewed from the top, and this is formed by bending a part of the rear edge portion 13b of the footrest surface 13 downward. Now, the above engine unit IO
It is located in front of the air cleaner 10a. A notch 17a is formed between this shielding wall 17 and the vertical wall portion 14, and this is to allow the vertical wall portion 14 to be deformed outward relatively easily. be. Further, the mounting boss portions 13e and 13d are respectively fixed to support stays 15a and 15b with mounting bolts (not shown). This support stay 152 is connected to the vehicle body frame 2.
It is welded and fixed to the front end of the rear frame 2b, and the support stay 15ti is welded and fixed to the upper rising part of the rear frame 2b.

Further, on the lower surface of the footrest surface 13, a reinforcing lip 16 is provided.
It is integrally formed in a lattice shape, with two reinforcing ribs on the left and right.
A cylindrical support pipe portion 16a is integrally formed in the 6 portion, and the support pipe portion 16a extends downward.
It comes into contact with the upper surface of the right rear frame 2b or the support stay 152, and supports the footrest surface 13. Further, a notch 16 is provided at the connection portion between each reinforcing lip 16 and the vertical wall portion 14.
b is formed, and this notch 16b allows the vertical wall portion 14 to be relatively easily deformed outward.

Next, the effects of this embodiment will be explained.

As mentioned above, in order to ensure the strength of the footrest on a resin footrest, a reinforcing lip is integrally formed on the bottom surface of the footrest, but in this case, the vertical wall is curved. and,
The resin molding mold needs to be of a sliding type, and in order to ensure this sliding, the placement position of the mounting boss portion is restricted, resulting in a problem that the degree of freedom in the mounting position is reduced.

In contrast, in this embodiment, the vertical wall portion 14 and the reinforcing lip 16
A notch 16b is provided at the connection part with the shield wall, and a notch 17 is provided between the shield walls.
Since the vertical wall portion 14 can be relatively easily deformed outward during die cutting, the die can be removed without sliding the die. Therefore, a sliding die is adopted. As a result, there is no need to slide the mounting boss portions 13c and 13d, and there are no restrictions on the placement positions of the mounting boss portions 13c and 13d. g, the amount of overhang from the mounting bosses t3c and 13d is reduced, and as a result, the strength of the footrest surface 13 can be improved.

Further, in this embodiment, the support pipe portion 16a is provided protrudingly from the lower surface of the footrest surface 13 and is supported by the vehicle body frame 2, so that the bending of the footrest surface 13 can be prevented. Also, the strength of the footrest surface 13 can be improved.

Furthermore, in this embodiment, since the shielding wall 17 is formed in front of the air cleaner 10a, muddy water, etc. flowing backward along the lower surface of the footrest surface 13 when driving in the rain can be caused to fall downward by the shielding wall 17. Furthermore, muddy water, etc. flowing backward along the inner surface of the vertical wall portion 14 can be caused to fall downward by the step portion 13e formed at the rear end of the vertical wall portion 14, and the muddy water, etc. is sucked into the air cleaner 10H. You can prevent this from happening. The shielding wall 17 also functions as a reinforcing rib to improve the strength of the footrest surface 13, but since a notch 17a is formed between the shielding wall 17 and the vertical wall portion 14, the shielding wall 17 does not interfere with the above-mentioned hollowing out of the mold.

Furthermore, the reinforcing rib 16. Notch 16 in shielding wall 17
Since b and 17a are provided, looking at the vertical wall portion 14,
There are no parts where the wall thickness suddenly changes due to the ribs, etc., and the generation of whiskers during resin molding can be prevented, and the appearance can be improved accordingly.

FIG. 8 shows a modification of the shielding wall. In this modification, a shielding wall 17 is arranged between the mounting boss 13d and the vertical wall 14, and the outer end of the support stay 15b that supports the mounting boss 13d is attached to the inner end of the shielding wall 17. This is an example where they are brought into contact.

In this modification, the same effects as in the above embodiment can be obtained, and the downward deflection of the overhang portion 13f of the footrest surface 13 is prevented by the support stay 15b via the shielding wall 17. 9. Adjust the strength of the footrest surface 13. I can move up.

〔Effect of the invention〕

As described above, according to the footrest for a scooter type vehicle according to the present invention, since a notch is formed at the connection portion with the vertical wall of the reinforcing rib integrally formed on the lower surface of the footrest, the resin molding mold This eliminates the need for a sliding type, which has the effect of increasing the degree of freedom in arranging the mounting boss portion, as well as preventing sink marks caused by the reinforcing lip and improving the appearance.

[Brief explanation of the drawing]

1 to 7 are diagrams for explaining a footrest according to an embodiment of the present invention, and FIG. 1 is a sectional front view thereof;
Figures 2 and 2 are a cross-sectional rear view of the shielding wall portion, Figure 3 is a cross-sectional front view of the step, Figure 4 is a left side view of the rear part, Figure 5 is a bottom view of the shield wall, and Figure 6 is a cross-sectional side view of the shield wall. , FIG. 7 is a side view of a scooter type motorcycle in which the footrest is adopted, and FIG. 8 is a rear view showing a modification of the shielding wall portion. In the figure, l is a scooter type motorcycle, 2 is a body frame, 2C is a downward bending part, 5 is a steering wheel, 6 is a seat, 12 is a footrest, 13 is a footrest surface, 13c, 13
d is a mounting boss portion, 14 is a vertical wall portion, 15a and 15b are support stays, 16 is a reinforcing lip, 16b is a notch, 17 is a shielding wall (reinforcing lip), and 17a is a notch. Patent Applicant Yamaha Motor Co., Ltd. Agent Patent Attorney Tsutomu Shimofu Figure 8

Claims (1)

[Claims] (1) Equipped with a footrest surface formed into a flat plate shape using resin, and a curved vertical wall portion formed by bending downward from the left and right side edges of the footrest surface in the vehicle width direction, In a footrest for a scooter-type vehicle that is disposed at a downwardly bent portion between a steering handle and a seat, a boss for attaching to the frame and a reinforcing rib are integrally formed on the lower surface of the footrest, A footrest for a scooter type vehicle, characterized in that the boss part is fixed to a support stay fixed to the downward bent part, and a notch is provided at the connection part between the vertical wall part and the reinforcing rib.