JPH03271087A - Seat cowl for motorcycle - Google Patents

Abstract

PURPOSE:To improve the extent of rigidity in a side lower edge as well as to make the load added by seating of a rider effectively supportable by forming a lower edge at the side of a motorcycle seat cowl with a fiber material whose arrangement is trued up along the longitudinal direction. CONSTITUTION:A seat cowl 21 is made of fiber reinforced resin, and it is made up of solidly forming a top part 22, forming an upper bulged part 24 in the rear from a seating part 23 installing a seat at the upper part, a side face part 25 extending to the lower part at both symmetrical sides and a rear surface part 29 continuing to the rear. In a lower edge 41 of the side face part 25, there is provided a fiber reinforced resin layer 42 whose fiber arrangement is trued up, in addition to a honeycomb layer 33. In brief, the one layer fiber reinforced resin layer 42 whose fiber arrangement by a long fiber of, for example, a carbon fiber or the like is trued up along the body longitudinal direction, is interposed between two-layer fiber reinforced resin layers 31 and 32, while the one-layer fiber reinforced resin layer 42 is also interposed between the two-layer fiber reinforced resin layers 31 and 32 at the inner sides, and the honeycomb layer 33 and an adhesive layer 34 are interposed between these layers.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a seat cowl for a motorcycle made of fiber-reinforced resin and having excellent rigidity.

[Prior Art] A seat cowl for a motorcycle made of a fiber-reinforced resin material such as carbon ta fiber is disclosed in Japanese Patent Application Laid-Open No. 1-1091.
It is publicly known from the publication No. 85.

[Section Il trying to invent or solve! 6] A seat cowl for a motorcycle has a seating portion, a side surface portion extending downward from both sides of the surface portion, and a side surface portion extending downward from both sides of the surface portion. In order to effectively support the thin assembly made up of 75 parts of Li, it is particularly desirable that the stiffness of the seat cowl side part be +L taII: 9J.

Therefore, an object of the present invention is to provide a fiber-reinforced resin seat cowl with rigidity P1 of the lower edge of the side surface which is long in the +iiIm force direction.
The purpose is to provide a seat cowl for the 1'' I fJ- two-wheeler!1() by adding +7 to +7 to make it possible to effectively hold the weight from sitting on the East 7) in the center.

[Means for solving the problem] In order to achieve the following problems, the unreleased 1JI has a seating part: side 10 extending downward from both left and right sides of the u'ii part.
In the seat cowl made of fiber-reinforced resin, which is formed long in the rear direction by 1 part, the edge of the side part is cured in the front-rear direction to align the fiber orientation. It is characterized in that it is made of a fiber material.

[Function] The lower edge of the side surface of the seat cowl made of fiber-reinforced resin is made of a fiber material with fiber orientation aligned in the front-rear direction, increasing its rigidity. The stiffness of the cowl itself is improved, so that it can effectively support the load caused by the seating of the occupant.

[Example] Examples will be described below based on the accompanying drawings.

In FIG. 1 showing an example of a motorcycle to which the present invention is applied, 1 is a main frame, 5 is a seat frame, 11 is an engine, and 21 is a seat cowl according to the present invention.

A front fork 8 supporting a front wheel 6 and equipped with a handle 7 is attached to a head pipe 2 at the front end of the main frame l.
A fuel tank 9 is installed on the main frame l. The engine 11 is suspended below the main frame 1.
12a and 12b are upper and lower V-shaped cylinder parts, 13a
, 13b is its exhaust pipe, and 14a and 14b are its mufflers. Further, a rear fork 16 supporting a rear wheel 15 is pivotally supported on the center frame portion 3 at the rear end of the main frame l, and 17 is an extraction tamper thereof. and main frame l
A seat frame 5 is connected to the bridge portion 4 between the rear ends, and collar links 18 are provided that cover the front and both sides of the vehicle body, and 19 is a seat.

Seat cowl 21 (made of fiber-reinforced resin, 21st seat cowl)
As shown in enlarged view in A and FIG. side parts 25.25 extending downward on both sides; a rear part 29 that continues behind the white side parts 25, 25 and the upper part 22;
are integrally formed.

The side surface portion 25 includes a downwardly extending portion 26 from the −L surface seating portion 23 and a downwardly extending portion 27 from the −4 dual surface bulging portion 24. Long front extension 2
8 are uniformly provided.

As shown in FIG. 4, the general surface of the fiber-reinforced resin seat cowl 21 is formed of two m#I reinforced resin layers 31 and 32 made of a woven fabric of a long fiber material such as aramid fiber.

The two-sided seating portion 23 and the front half of the side surface portion 25 are interposed with a honeycomb layer 33 for reinforcement, and similarly, the upper surface bulging portion 24, the rear half of the side surface portion 25, and the rear surface portion 29 are also partially honeycombed. Layer 33... is interposed.

That is, as shown in FIG.
A honeycomb layer 33 made of, for example, aramid fiber is pasted on the back side of the honeycomb layer 32 through adhesive scraps 34 made of a double-sided adhesive film, and on the back side of this honeycomb layer 33, two layers of fiber reinforced m1131.32 similar to those described above are pasted. The edges of the fiber-reinforced resin fi31.32 on the inside of this honeycomb layer 33 are glued to the fiber-reinforced resin layer 31.32 on the front side. ! :
34, and are joined as a crushing deformation part 35.

In addition, the seat cowl 21 has the front edge of the side surface 25 fixed to the rear of the main frame 1 with screws, and
1. To screw the to the seat frame 25. Attachment holes 36 on the front edge of the side surface portion 25 and the upper surface seating portion 23...
・It forms.

As shown in FIG. 6, this attachment hole 36 portion is located between the surfaces of the two layers of fiber reinforced resin scraps 31 and 32 on the front side and the two layers of fiber reinforced phase 11W layers 31 and 32 on the inner side. , and is further formed by interposing a rotating resin layer 37, 37, 38, 38, and the periphery of the surface is a screw seating surface 39 that is one step lower than the general surface.

Below 1. The front half of the seat cowl 21 is fixed to the frame 5 to the soil frame L and the sea 1 at each plate attachment hole 36... part, and the IJI trachea 1 is attached to the seat cowl 21M side.
3a, a muffler 14a, etc., and a tail pipe at the rear end of the muffler 14a is exposed from the seat cowl rear surface portion 29.

In addition to the honeycomb layer 33, fiber-reinforced resin scraps 42 having the same fiber orientation are provided on the edge 41 of the side surface 25 extending along the longitudinal direction of the vehicle body.

I! As shown in FIG. 7, between the two layers of fiber reinforced phases 11t'lW31 and 32 on the front side, there is a layer made of a long fiber material such as carbon fiber so that its fiber orientation is aligned in the longitudinal force direction of the vehicle body. In addition to interposing the LLI fiber reinforced resin R42,
Between the two fiber-reinforced resin layers 31 and 32 on the inner surface, there is also a layer of MRA-reinforced resin layer made of long fiber materials such as carbon fibers, with the m-fiber orientation aligned along the longitudinal direction of the vehicle body. A honeycomb layer 33 and an adhesive layer 34 similar to those described above are interposed between these layers.

In this way, in the seat cowl 21 made of #a fiber-reinforced resin made of fiber fabric on several sides, each of the lower edges 41, 41 of both side surfaces 25, 25 is made of a long fiber material to adjust the fiber orientation in the longitudinal force direction of the vehicle body. The fiber reinforced resin layer 42.
42, the rigidity of the lower edge portions 41 and 41 on both sides of the seat cowl can be increased.

This increases the rigidity of both side surfaces 25, 25 of the seat cowl, and increases the rigidity of the seat cowl 21 itself, thereby effectively supporting the load of the occupant seated on the seat 19 of the two-sided seating section 23-L of the seat cowl. It has become a thing.

By providing the reinforcing honeycomb layer 33 in the front portion of the seat cowl 21 where the front weight is applied as in the embodiment, the rigidity of the seat cowl 21 can be further increased.

[Effect of one shout] As described above, according to the present invention, there is provided an N-motor two-wheeled vehicle made of MLA-reinforced resin in which the lower edge of the side surface is formed of a fiber material in which the fiber arrangement 11j is aligned along the front-rear force direction. For the seat cowl, the stiffness of the lower edge of the side of the seat cowl can be increased by 6゛l.This improves the stiffness of the seat cowl and reduces the load caused by the seating of the occupants. You can support it.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of an example of a motorcycle to which the present invention is applied, FIG. 2 is a half-cut plan view showing an enlarged view of a fiber-reinforced resin layer sheet cowl according to MID-1, and FIG. is also a side view of the seat cowl in Figure ff14 - a sectional view of several sides, Figure 5 is a sectional view of the honeycomb structure part, Figure 6 is a sectional view of the mounting part, Figure 7 is a side view of the lower side made of short fiber material. FIG. 3 is a cross-sectional view of the edge. In addition, in the drawing, 21 is the seat cowl, 22 is the first section, and 25
31, 32, 37, 38 are fibers, wM & fiber-reinforced resin layer 33 is a honeycomb layer, 41 is a lower edge of the side surface, 42 is #l which is aligned in the front and rear direction to align the fiber orientation!
This is a fiber-reinforced resin layer. patent

Claims (1)

[Claims] In a motorcycle seat cowl made of fiber-reinforced resin, the seat cowl is made of fiber-reinforced resin and is formed long in the front-rear direction, and includes side parts extending downward from both left and right sides of an upper face part having a seating part. A seat cowl for a motorcycle, characterized in that it is formed from a fiber material with uniform fiber orientation along the length.