JP2009179277A - Vehicle body structure for motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively use a space under a seat for storing a fuel tank and articles. <P>SOLUTION: A rear frame 7 is made to be a slanting tilting portion 8, and an upper end portion is bent in a generally U-shape to provide upper and lower portions and a seat supporting portion 10, thereby supporting a seat 11 on the sear supporting portion 10. A fuel tank 16 is stored and supported in a space surrounded by a tilting portion 8, the upper and lower portions, and the seat supporting portion 10, and an injection cap 17 is provided at an upper surface rear end. A part under the seat 11 and in front of the fuel tank 16 is made to be a space 13 under the seat. A handle portion 35 is hooked from a hook 12 provided on a bottom portion of the seat 11 to hang and support a baggage 14. A bottom portion of the baggage 14 is supported by an engine cover 30 tilting forward, and right and left sides are supported by a side supporting portion 15 projecting upward to a high level which is a part of the tilting portion 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a vehicle body structure of a motorcycle in which a fuel tank and an article storage portion can be arranged below a seat.

As a conventional motorcycle body structure, for example, the rear part of the body frame is extended obliquely rearward from the footrest part to form a rear frame, and a seat post that is inclined forward from the rear end part of the rear frame is erected, It is known that a fuel tank is disposed in front of the seat post and below the seat, an article storage section is provided on the footrest, and the positional relationship between the article storage section and the fuel tank is reversed.
Santo 20215 gazette

In the conventional vehicle body structure, in order to provide one of the fuel tank or the article storage portion in front of the seat post, the other must be disposed on the footrest portion. Therefore, the footrest space is reduced, and the footrest space for the occupant is sacrificed.
For this reason, it is desirable to dispose both the fuel tank and the article storage section below the seat. However, since the rear end of the space capable of storing these is limited by the base of the seat post, such a large space below the seat is required. It was difficult to provide. Accordingly, an object of the present invention is to provide both a fuel tank and an article storage section below the seat without sacrificing the footrest space.

In order to solve the above-mentioned problem, the invention according to claim 1 is a motorcycle including a rear frame formed with a footrest portion between a handle and a seat, and extending rearward and obliquely upward from the footrest portion.
Bending the rear end portion of the rear frame into a substantially U shape in a side view, an inclined portion obliquely descending forward, an upper and lower portion extending upward from the rear end, and a seat support portion extending forward substantially horizontally from the upper end age,
While holding the fuel tank in this roughly U-shaped part,
The seat support portion extends forward from the fuel tank, the seat is disposed on the seat support portion, and a lower portion of the seat support portion is used as a luggage storage space.

  According to a second aspect of the present invention, in the first aspect, a part of the seat is supported so as to ride on the seat support portion and the fuel tank.

  According to a third aspect of the present invention, in the first aspect, the rear portion of the fuel tank extends rearward from the seat, and a fuel filler opening is provided in the extended portion.

  According to a fourth aspect of the present invention, in the first aspect, a loading hook is provided on the lower surface of the seat, and an engine cover is disposed below the seat so as to cover an upper portion of the engine, and a space between the engine cover and the seat is provided. The luggage storage space is supported by being suspended by the loading hook, and at least the front of the storage space is opened.

According to a fifth aspect of the present invention, in the first aspect, the left and right rear frames, the engine cover, It is characterized by forming a concave space surrounded by.

According to the first aspect of the present invention, the rear frame has a substantially U-shaped rear end, the fuel tank is held in this portion, the seat support is extended forward of the fuel tank, and the seat is supported by the seat. Since the luggage storage space is provided below the seat and provided under the seat, the luggage storage space can be provided in a sufficient space below the seat without sacrificing the footrest space, and the fuel tank can be disposed at the same time.
Further, since the rear frame holds the fuel tank, the fuel tank can be protected by the rear frame and the fuel tank can be stably supported.
Further, by arranging the fuel tank behind the seat, it is possible to make the footrest portion a lower floor and to enlarge the storage space under the seat.

  According to the second aspect of the present invention, the support rigidity with respect to the load of the occupant in the seat support portion can be increased.

  According to the invention of claim 3, it is possible to easily supply oil without being affected by the sheet shape. Further, by shifting the fuel tank to the rear, it is possible to expand the luggage storage space below the seat.

  According to the invention of claim 4, by providing a loading hook on the lower surface of the seat, the load can be suspended and supported below the seat, so that the space between the seat and the engine cover can be utilized to the maximum extent as a load storage space. Can do. Furthermore, since the front of the luggage storage space is opened, the luggage storage space can be easily accessed.

According to the invention of claim 5, since the left and right rear frames and the engine cover form a concave space in front view, the bottom portion of the load hung on the loading hook can be supported by this concave portion, Stable loading of luggage can be achieved by preventing the rolling of the luggage during traveling.

  An embodiment will be described below with reference to the drawings. FIG. 1 shows a side view of a motorcycle. This motorcycle is a scooter type vehicle having a low floor type step floor 3 between a front wheel 1 and a rear wheel 2. The step floor 3 corresponds to the footrest portion in the present invention. The vehicle body frame 4 (only a part of which is visible) that supports the front wheel 1 and the rear wheel 2 has a lower part of the step floor 3 as a heel part, and its front part rises obliquely upward to support the lower end of the front wheel 1. The front fork 5 is rotatably supported. The front fork 5 can be steered by a handle 6.

  The rear part of the body frame 4 from the step floor 3 forms a rear frame 7 that rises obliquely upward. The rear frame 7 includes an inclined portion 8 that forms an oblique straight line when viewed from the side, an upright portion 9 that is bent so as to be substantially upright in the vicinity of the top portion thereof, and a seat support portion 10 that is folded back substantially horizontally from the front end thereof. Thus, a substantially U-shaped portion in side view is provided, and the fuel tank 16 is held here. A seat-type seat 11 is supported on the seat support portion 10. A seat lower space 13 is formed below the seat support portion 10 so as to form a luggage storage space with the inclined portion 8.

  Further, a hook 12 that protrudes forward is provided on the front side of the bottom portion of the seat support portion 10, and a luggage 14 such as a shopping bag such as a convenience store bag is hooked and supported by the hook 12, and the bottom portion is placed on the inclined portion 8. More precisely, it is supported on an engine cover which will be described later. The inclined portion 8 is provided with a side support portion 15 that protrudes upward so as to support the left and right sides of the bottom portion of the luggage 14.

The rear half of the seat 11 is supported by overlapping the front half of the fuel tank 16, the rear portion of the fuel tank 16 extends rearward of the seat 11, the injection cap 17 is exposed behind the seat 11, and the fuel filler port is Since it is facing upward, it is possible to easily refuel regardless of the shape of the seat. Further, by shifting the fuel tank 16 rearward, the under-seat space 13 can be expanded. In addition, since the seat support portion 10 rides on the fuel tank 16, it is possible to increase the support rigidity of the seat support portion 10 with respect to the occupant's load.
Reference numeral 18 denotes a tail lamp, and 19 denotes a rear blinker, which are supported behind the upright portion 9.

  The rear wheel 2 is supported by the swing type power unit 20 and is covered with a rear fender 21 at the top. A tail lamp 18 and a rear blinker 19 are located above the rear fender 21. The swing type power unit 20 is supported at its front end portion so as to be swingable with respect to the rear portion of the lower part of the step floor 3 of the body frame 4. The step floor 3 is at a lower position than the upper portions of the front wheel 1 and the rear wheel 2 and is configured to place the feet of the occupants seated on the seat 11 in a seated manner.

FIG. 2 is a perspective view showing the rear frame 7 from the front. The rear frame 7 is composed of a pair of left and right square cross-section members. By using this square pipe with a vertically long cross section, sufficient support rigidity can be obtained, and it has a vertical height to form a concave space described later. An engine cover 30 is spanned between the bottom portions of the left and right rear frames 7 so as to close the space between the left and right rear frames 7 so that the bottom portion of the luggage 14 can be put on and supported.
The engine cover 30 forms a cover that covers the engine and the like in front of the swing type power unit 20 when viewed from the front of the vehicle body, and is a metal or resin plate.

The left and right side surfaces of the fuel tank 16 are positioned and fixed when the substantially U-shaped portions formed by the left and right inclined portions 8, the upright portions 9, and the seat support portion 10 come in contact from the outside. The substantially U-shaped portion extends along the three sides of the bottom, rear, and top of the left and right side surfaces of the fuel tank 16. The inclined portion 8 has a narrower vertical width than the side support portion 15 and is connected to the side support portion 15 at a step 32.
FIG. 4 is a central cross section in which the center of the rear frame 7 in the left-right direction is cut along the longitudinal direction. Inside each lower part of the left and right rear frames 7, a flange portion 33 that is bent at a substantially right angle and protrudes to the other side is provided over the entire length, and the bottom portion 31 of the fuel tank 16 and the engine cover 30 in the left-right direction are provided on the flange portion 33. Edges ride and are each supported.

  A rear portion of the engine cover 30 forms a stopper flange 36 bent upward along the front surface of the fuel tank 16, and the front side of the fuel tank 16 abuts on the stopper flange 36 so that the front side is positioned and fixed. The bottom surface 31 of the fuel tank 16 is tilted forward in a side view, and the front lower portion protrudes downward at an acute angle. Therefore, the fuel tank 16 is placed on the flange portion 33 so that the front surface abuts against the stopper flange 36. It is supported and special fixing means can be dispensed with. However, it is optional to use other fixing means such as a bolt.

  The upper surface of the fuel tank 16 is covered with the seat 11 on the front half side, and the injection cap 17 is provided here with the rear half side exposed. The seat support portion 10 projects forward from the front end of the upper surface of the fuel tank 16, and a lower seat space 13 is formed below and in front of the fuel tank 16. The seat support 10 holds the fuel tank 16 as a part of the rear frame 7 and is supported on the left and right side surfaces of the fuel tank 16, so that the seat support 10 is supported by the fuel tank 16. Is supported by the fuel tank 16.

  The side support portion 15 of the rear frame 7 is formed from the front side surface of the fuel tank 16 to the front side of the fuel tank 16, and the protruding height of the engine cover 30 in the vertical direction is higher than the inclined portion 8. 13, the left and right sides of the bottom side of the load 14 are supported.

  FIG. 3 is a transverse cross section of the seat 11 and the rear frame 7 (a cross section corresponding to line 3-3 in FIG. 1). A flange portion 33 projecting inward is provided at the lower part of the left and right side support portions 15, and the engine cover 30 is placed on the flange portion 33 and fixed by appropriate means such as bolts. The thickness of the engine cover 30 is smaller than the height of the side support portion 15, and the left and right side support portions 15 and the engine cover 30 have a substantially U-shaped cross section so as to form a space opened upward. The bottom of is to be placed.

  The dimension between the upper end of the side support part 15 and the upper surface of the engine cover 30 forms the depth d of the support part, and this dimension d can be arbitrarily adjusted by adjusting the height of the side support part 15 and the thickness of the engine cover 30. Can be formed. The greater the depth d, that is, the deeper, the more stable support of the load 14 becomes possible.

One end of the hook 12 is attached to the bottom plate 34 of the seat 11, and the front end protrudes forward, and the hand lowering portion 35 of the luggage 14 is hooked to support the luggage 14 in a suspended manner. The bottom part of the suspended luggage 14 rides on the engine cover 30 and is stably supported.
At this time, since the engine cover 30 forms an obliquely downward slope, the bottom of the luggage 14 slides over the engine cover 30 even if the length from the hand-lowering portion 35 to the bottom of the luggage 14 changes. Since the movement is automatically adjusted to the position where the lowering portion 35 is tensioned and pulled, the hand lowering portion 35 can always be tensioned, and the support of the load 14 is ensured.

  Although only one hook 12 is provided at the center of the bottom plate 34, two hooks 12 can be provided apart from each other as shown by phantom lines. In this way, when a pair of left and right hand lowering portions 35 are provided, the support span can be further expanded to the left and right by hooking each of the hand lowering portions 35 on the hooks 12, so that more stable support can be achieved.

  The hook 12 may be formed integrally with the bottom plate 34. Further, the sheet support unit 10 may be supported. The bottom plate 34 is spanned and supported between the left and right sheet support portions 10.

  Since the bottom portion 31 of the fuel tank 16 is inclined forward in parallel with the flange portion 33 (see FIG. 4), the fuel can be collected in the lower front portion, and if the fuel is taken out from here, it can be reliably used up to a small remaining amount. . In addition, the space below the seat 11 can be used to achieve a relatively large capacity, and the rear frame 7 bent in a substantially U-shape can be used for reliable support and a storage space can be secured.

  Further, since the load 14 can be supported by hanging under the seat space 13 below the seat 11 in front of the fuel tank 16, the space below the seat 11 can be used effectively and an easy-to-use article support portion can be formed. Also, the luggage 14 can support any size from small to large, and is stable against shaking in the left-right direction by forming a recess surrounded by the side support 15 by the slope of the engine cover 30. Can be supported.

The present invention is not limited to the above-described embodiments, and various modifications and applications can be made within the principle of the invention. For example, the rear frame 7 may be a round pipe or a square pipe, and may be used alone instead of a pair of left and right flat thick plates. In this case, the engine cover can also be integrated if the cross section is formed into a channel shape or an H shape opened upward.

Side view of motorcycle Perspective view showing the rear frame from the front Cross-sectional view corresponding to line 3-3 in FIG. Central cross-sectional view of the rear frame

Explanation of symbols

7: rear frame, 8: inclined portion, 9: upright portion, 10: seat support portion, 11: seat, 12: hook, 13: space under the seat, 14: luggage, 15: side support portion, 16: fuel tank, 17 : Injection cap, 30: Engine cover

Claims (5)

In a motorcycle having a rear frame that forms a footrest between the handle and the seat and extends rearward and obliquely upward from the footrest,
Bending the rear end portion of the rear frame into a substantially U shape in a side view, an inclined portion obliquely descending forward, an upper and lower portion extending upward from the rear end, and a seat support portion extending forward substantially horizontally from the upper end age,
While holding the fuel tank in this roughly U-shaped part,
A motorcycle characterized in that the seat support portion extends forward from the fuel tank, the seat is disposed on the seat support portion, and a lower portion of the seat support portion is used as a luggage storage space. Car body structure.
As well as   The body structure of a motorcycle according to claim 1, wherein a part of the seat is supported so as to ride on the seat support portion and a fuel tank.   The vehicle body structure for a motorcycle according to claim 1, wherein a rear portion of the fuel tank extends rearward from the seat, and a fuel filler opening is provided in the extended portion.   A load hook is provided on the lower surface of the seat, and an engine cover is provided below the seat so as to cover the upper part of the engine. A space between the engine cover and the seat is suspended and supported by the load hook. 2. The body structure of a motorcycle according to claim 1, wherein a storage space is provided, and at least the front of the storage space is opened.   A pair of left and right rear frames are formed, and the engine cover is supported between the lower parts of the left and right rear frames, thereby forming a concave space in front view surrounded by the left and right rear frames and the engine cover. The vehicle body structure of a motorcycle according to claim 1.

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