WO2021157210A1

WO2021157210A1 - Saddle-riding-type vehicle

Info

Publication number: WO2021157210A1
Application number: PCT/JP2020/046962
Authority: WO
Inventors: 孝一郎清水; 啓太櫻田
Original assignee: 本田技研工業株式会社
Priority date: 2020-02-05
Filing date: 2020-12-16
Publication date: 2021-08-12
Also published as: JPWO2021157210A1; CN218777629U; JP7340043B2; BR112022015468A2

Abstract

This saddle-riding-type vehicle (1) comprises a fuel tank (37) and a plate member (40) covering a portion of the fuel tank. The fuel tank (37) is fixed by a flange joining part (37f) in which respective flange parts (37fa, 37fb) of a first fuel tank half body (37a) and a second fuel tank half body (37b) are in surface contact with each other. The plate member (40) comprises: a plate main body (40b) which extends along an outer surface (37fs) on the side opposite to the joining surface of the flange part (37fa) of the first fuel tank half body (37a), which is one fuel tank half body among the first fuel tank half body (37a) and the second fuel tank half body (37b); and a first wall part (41) covering a tip (37ft) of the flange joining part (37f) from outside.

Description

Saddle-type vehicle

The present invention relates to a saddle-mounted vehicle.

For saddle-mounted vehicles such as motorcycles, a structure has been proposed in which a separate plate member is placed between the vehicle body frame and the fuel tank for the purpose of ensuring the strength of a part of the fuel tank. For example, Patent Document 1 describes a technique in which a part of the fuel tank (pump mounting seat) is reinforced by a tank rear stay arranged on the bottom surface of the lower rear portion of the fuel tank.

Japanese Patent Application Laid-Open No. 2015-47959

Generally, a fuel tank is composed of two fuel tank halves, and the fuel tank is formed by fixing the flanges of the fuel tank halves at an overlapping flange joint. The flange portion of the fuel tank projects from the outer peripheral portion of the fuel tank portion to the outside of the tank. Therefore, the flange joint is easily hit by something from the outside, and may be damaged during assembly or maintenance, for example.

The present invention provides a saddle-mounted vehicle capable of appropriately protecting the flange joint of a fuel tank.

The present invention
With the fuel tank
A saddle-type vehicle including a plate member that covers a part of the fuel tank.
The fuel tank
Equipped with a first fuel tank half body and a second fuel tank half body,
The first fuel tank half body and the second fuel tank half body each include a fuel tank portion forming a fuel accommodating space and a flange portion protruding outward from the outer peripheral portion of the fuel tank portion. It is fixed by a flange joint where the flanges are in surface contact.
The plate member
Of the first fuel tank half and the second fuel tank half, a plate body extending along the outer surface of one of the fuel tank halves on the side opposite to the mating surface of the flange portion.
A first wall portion that covers the tip end portion of the flange joint portion from the outside is provided.

According to the present invention, the plate member includes a plate body extending along the outer surface of the flange portion of the fuel tank and a first wall portion that covers the tip end portion of the flange joint portion of the flange portion from the outside. Therefore, the flange joint can be appropriately protected.

It is a side view of the saddle type vehicle of one Embodiment of this invention. It is a side view which shows the body frame and the fuel tank. It is the bottom view which looked at the periphery of a fuel tank from the bottom of a vehicle. It is a perspective view of a plate member. It is another perspective view of the plate member. It is a top view for showing the mounting positional relationship between a plate member and a fuel tank. It is an enlarged perspective view of the main part which shows the mounting structure of a plate member.

Hereinafter, an embodiment of the saddle-mounted vehicle of the present invention will be described with reference to the attached drawings. The drawings are viewed in the direction of the reference numerals, and the front of the saddle-type vehicle is shown as Fr, the rear is shown as Rr, the upper side is shown as U, the lower side is shown as D, the left side is shown as L, and the right side is shown as R.

First, the overall configuration of the saddle-mounted vehicle 1 (hereinafter, also simply referred to as “vehicle 1”) will be described with reference to FIG.
As shown in FIG. 1, in the vehicle 1, the vehicle body frame 2 forming the skeleton of the vehicle body 1a is covered with the vehicle body cover C. As shown by the broken line in FIG. 1, the vehicle body frame 2 has a main frame 4 extending rearward and downward from the head pipe 3 at the front portion of the vehicle body, and bifurcated to the left and right at the rear end of the main frame 4, and left and right rearward and upward. A pair of

seat rails

5, 5 extend.

From the head pipe 3, in addition to the main frame 4, a pair of left and right down

tubes

6 and 6 extend downward and bend to extend the floor area rearward, and further bend upward at the rear of the floor area to

seat rails

5 and 5. It is connected to the front end of. Back stays 7 and 7 extending from the bent portion of the floor region rear portion of the

down tubes

6 and 6 further extend to the

seat rails

5 and 5 and are connected to the center portion of the

seat rails

5 and 5 in the front-rear direction.

In the front part of the vehicle body frame 2 configured as described above, the steering stem 10 is rotatably penetrated through the head pipe 3, and the steering stem 10 is integrated with the front fork 11 whose lower end pivotally supports the front wheel 12. The left and

right handles

13 and 13 extend to the left and right from the upper end of the steering stem 10 so as to be connected.

A fuel tank 37 is erected between the main frame 4 and the left and right down

tubes

6 and 6, and a seat 38 is provided above the

seat rails

5 and 5 supported by a vehicle body cover C. The hanger bracket 20h of the power unit 20 is attached to the

brackets

8 and 8 protruding rearward from the bent portion at the rear portion of the floor area of the

down tubes

6 and 6 and downward from the front end portion of the back stays 7 and 7 via the link member 9. It is connected so that it can swing.

The front part of the power unit 20 is a single-cylinder 4-stroke water-cooled internal combustion engine. It has a large forward leaning posture close to it.

The rear part of the power unit 20 is a belt-type continuously variable transmission 80, and the rear wheels 21 are provided on the rear axle 115, which is the output shaft of the reduction gear mechanism 110. A cushion 22 is provided between the support bracket 15 provided at the rear end of the belt-type continuously variable transmission 80 and the rear of the seat rail 5. Further, on the lower left side of the vehicle body 1a, a side stand 39 for holding the vehicle body 1a in an inclined posture when the vehicle is stopped is provided.

Hereinafter, the structure of the fuel tank 37 and its mounting structure will be described in detail with reference to FIGS. 2 to 7.

As shown in FIG. 2, the fuel tank 37 is provided in a space formed by the main frame 4 and the down tube 6. In the side view, the front portion 37m of the fuel tank 37 is vertical along the down tube 6, the bottom portion 37d is substantially horizontal along the horizontal portion of the down tube 6, and the upper surface portion 37u is downward toward the rear. It is supported in a tilted posture. In other words, the fuel tank 37 is supported by the vehicle body frame 2 so as to be lowered rearward.

The fuel tank 37 includes a first fuel tank half body 37a and a second fuel tank half body 37b divided in the vertical direction, and the first fuel tank half body 37a located below and the second fuel tank half body located above. It is composed of a combination of bodies 37b. More specifically, the first fuel tank half body 37a has a fuel tank portion 37ta having a convex shape downward and forming a fuel accommodating space, and a flange portion 37fa protruding outward from the outer peripheral portion of the fuel tank portion 37ta. , Equipped with. On the other hand, the second fuel tank half body 37b includes a fuel tank portion 37tb having an upward convex shape and forming a fuel accommodating space, and a flange portion 37fb protruding outward from the outer peripheral portion of the fuel tank portion 37tb. .. The fuel tank 37 is welded and fixed at a flange joint portion 37f in which both flange portions 37fa and 37fb are in surface contact with each other.

As shown in FIG. 3, the fuel tank 37 has a lower rear end of the tank attached to the down tube 6 when viewed from the back side. In this mounting structure, the flange joint portion 37f at the lower rear end of the fuel tank 37 is attached to a pair of left and right mounting brackets 6b provided on the left and right down tubes 6, and a plate member 40 and a rubber member 50 (see FIG. 7). It is fastened together with a fastening bolt 82 that penetrates the.

Hereinafter, the plate member 40 will be described with reference to FIGS. 3 to 7.
As shown in FIGS. 3 to 5, the plate member 40 includes a plate body 40b extending in the vehicle width direction in contact with the outer surface 37fs of the flange portion 37fa of the first fuel tank half body 37a, and a rear end portion of the plate body 40b. The first bent portion 41v bent substantially at right angles to the plate main body 40b, the first wall portion 41 extending upward from the first bent portion 41v, and bent substantially at right angles from the front end portion of the plate main body 40b. It includes a second bent portion 42v and a second wall portion 42 extending downward from the second bent portion 42v.

The outer surface 37fs is the surface opposite to the mating surface of the flange joint portion 37f, and the outer surface 37fs of the flange portion 37fa is the lower surface of the flange portion 37fa. The flange joint 37f is reinforced by a plate body 40b extending along the outer surface 37fs.

The plate body 40b is provided with

plate fastening portions

46, 46 for attaching the plate member 40 to the flange joint portion 37f at positions near both ends in the vehicle width direction. Further,

fastening portions

47, 47 for mounting the plate member 40 to the mounting bracket 6b of the down tube 6 are provided outside the plate fastening portion 46 in the vehicle width direction.

The plate fastening portion 46 is provided with a female screw portion and is provided at a position corresponding to the plate mounting opening 37i formed in the flange joint portion 37f shown in FIG. Therefore, as shown in FIG. 7, the plate member 40 is fixed to the flange joint portion 37f by a fastening bolt 81 that penetrates the plate mounting opening 37i and is screwed into the plate fastening portion 46.

As shown in FIG. 7, the height h of the first wall portion 41 is larger than the thickness t of the flange joint portion 37f in a state where the plate member 40 is fixed to the flange joint portion 37f. That is, the first wall portion 41 covers the tip portion 37ft of the flange joint portion 37f from the outside.

In this way, the first wall portion 41 of the plate member 40 covers the tip portion 37ft of the flange joint portion 37f. The flange joint portion 37f can be protected at the time of maintenance or maintenance.

The second wall portion 42 covers the vicinity of the flange portion 37fa of the fuel tank portion 37ta in the first fuel tank semifield 37a from the outside in the mounted state of the plate member 40. As a result, the fuel tank portion 37ta is protected from the outside by the second wall portion 42 of the plate member 40.

Further, the plate member 40 is formed by bending the first wall portion 41 upward from the first bent portion 41v on the rear side of the plate main body 40b, and the second wall portion 42 is formed in front of the plate main body 40b. It is formed by bending downward from the second bent portion 42v on the side. With this structure, the rigidity of the plate member 40 is improved.

The first bent portion 41v includes a bottom portion 41vd along the vehicle width direction and an inclined surface 41vs inclined upward on both sides of the bottom portion 41vd in the vehicle width direction. Therefore, as shown in FIG. 6, in the mounted state of the plate member 40, the overall shape of the first bent portion 41v is a shape that follows the contour shape of the flange joint portion 37f. Further, a through hole 48 is provided in the connecting portion 41ds between the bottom portion 41vd and the inclined surface 41vs.

Further, as shown in FIG. 6, the plate member 40 is attached between the first wall portion 41 and the tip portion 37ft so that a predetermined gap w is formed in the attached state of the plate member 40. Therefore, the through hole 48 is not closed by the flange joint portion 37f.

As described above, since the through hole 48 is provided in the connecting portion 41ds between the bottom portion 41vd of the first bent portion 41v and the inclined surface 41vs, the water accumulated on the plate member 40 can be drained from the through hole 48. In particular, since the through hole 48 is provided on the side stand 39 side, when parking using the side stand 39 (see FIG. 1), the through hole 48 allows water accumulated on the plate member 40 with the vehicle body 1a tilted to the left. Can be drained from. Further, since the through holes 48 are provided on both the left and right sides, the water accumulated on the plate member 40 can be drained from the through holes 48 regardless of whether the vehicle body 1a is tilted to the left or right during traveling.

Further, as shown in FIG. 6, the plate member 40 is configured such that the length L2 of the plate member 40 is shorter than the maximum length L1 of the flange joint portion 37f of the mounting portion of the plate member 40, as shown in FIG. There is. Therefore, the plate member 40 does not project from the flange joint portion 37f in the vehicle width direction.

Hereinafter, the mounting structure of the fuel tank 37 and the plate member 40 to the mounting bracket 6b will be described in detail with reference to FIG. 7.
As described above, the plate member 40 mounted on the lower rear flange joint portion 37f of the fuel tank 37 has its fastening portion 47 overlapping with the fastening opening 37h of the flange joint portion 37f (see FIG. 6). Then, by screwing the fastening bolt 82 into the mounting bracket 6b with the rubber member 50 interposed therebetween, the plate member 40 and the flange joint portion 37f are jointly tightened. More specifically, the lower rubber member 50a is sandwiched between the mounting bracket 6b and the plate body 40b, and the upper rubber member 50b is sandwiched between the flange joint portion 37f and the head of the fastening bolt 82 or the washer 82w for fastening. The bolt 82 is screwed into the mounting bracket 6b.

In this way, the fuel tank 37 is fastened to the down tube 6 with the rubber member 50 interposed therebetween along with the plate member 40, so that the vibration transmitted from the down tube 6 to the fuel tank 37 can be reduced.

Further, as described above, in the fuel tank 37, the lower rear portion of the fuel tank 37 is supported by the mounting bracket 6b in a state of being lowered rearward to the vehicle body frame 2, and a plate is formed between the mounting bracket 6b and the flange joint portion 37f. By providing the member 40, it is possible to more appropriately reinforce the flange joint portion 37f, which is likely to be loaded by the weight of the fuel.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and can be appropriately modified, improved, and the like.
For example, in the above embodiment, the plate member 40 is provided below the flange joint portion 37f, but may be provided above the flange joint portion 37f, or may sandwich the flange joint portion 37f from above and below. ..

Although various embodiments have been described above with reference to the drawings, it goes without saying that the present invention is not limited to such examples. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the claims, which naturally belong to the technical scope of the present invention. Understood. Further, each component in the above-described embodiment may be arbitrarily combined as long as the gist of the invention is not deviated.

In addition, at least the following items are described in this specification. The components and the like corresponding to the above-described embodiments are shown in parentheses, but the present invention is not limited thereto.

(1) With the fuel tank (fuel tank 37),
A saddle-mounted vehicle (saddle-mounted vehicle 1) including a plate member (plate member 40) that covers a part of the fuel tank.
The fuel tank
It is equipped with a first fuel tank half body (first fuel tank half body 37a) and a second fuel tank half body (second fuel tank half body 37b).
The first fuel tank half body and the second fuel tank half body are a fuel tank portion (fuel tank portions 37ta, 37tb) forming a fuel storage space, and a flange portion protruding outward from the outer peripheral portion of the fuel tank portion. (Flange portions 37fa, 37fb) are provided, respectively, and the flange portions are fixed by a flange joint portion (flange joint portion 37f) in which the flange portions are in surface contact with each other.
The plate member 40
Of the first fuel tank half body and the second fuel tank half body, one fuel tank half body (first fuel tank half body 37a) has an outer surface (outer surface 37fs) opposite to the mating surface of the flange portion. ), And the plate body (plate body 40b)
A saddle-mounted vehicle including a first wall portion (first wall portion 41) that covers the tip end portion (tip portion 37ft) of the flange joint portion (flange joint portion 37f) from the outside.

According to (1), the plate member extends along the outer surface opposite to the mating surface of the flange portions of the first fuel tank half body and the second fuel tank half body, and the tip portion of the flange joint between the plate body and the flange portion. Since it is provided with a first wall portion that covers from the outside, the flange joint portion can be reinforced by the plate body, and the tip portion of the flange joint portion can be protected by the first wall portion, so that the flange joint portion can be appropriately provided. Can be protected.

(2) The saddle-mounted vehicle according to (1).
The plate member is a saddle-type vehicle further comprising a second wall portion (second wall portion 42) that covers the fuel tank portion of the one fuel tank half body from the outside.

According to (2), since the plate member further includes a second wall portion that covers the fuel tank portion of one fuel tank half body from the outside, the fuel tank portion of one fuel tank half body is also provided from the outside by the plate member. Can be protected.

(3) The saddle-mounted vehicle according to (2).
The fuel tank is divided in the vertical direction and is divided in the vertical direction.
One of the fuel tank halves is a fuel tank halves located below.
The first wall portion and the second wall portion are formed by bending from the plate body.
The first wall portion is bent upward from a first bent portion (first bent portion 41v) located on one side (rear side) of the plate body in the front-rear direction of the saddle-mounted vehicle.
The second wall portion is a saddle-mounted vehicle that bends downward from a second bent portion (42v) located on the other side (front side) of the plate body in the front-rear direction of the plate body.

According to (3), the first wall portion is formed by bending upward from the first bent portion located on one side of the plate body, and the second wall portion is located on the other side of the plate body. Since it is formed by bending downward from the second bent portion, the rigidity of the plate member can be improved.

(4) The saddle-mounted vehicle according to (3).
The fuel tank is supported by the body frame (body frame 2) of the saddle-mounted vehicle so as to be lowered rearward.
The plate member is a saddle-type vehicle arranged between a lower frame (down tube 6) located at the rear lower portion of the fuel tank in the vehicle body frame and the flange joint portion.

According to (4), since the plate member is arranged between the lower frame and the flange joint, the flange joint, which is likely to be loaded by the weight of the fuel, can be reinforced by the plate member.

(5) The saddle-mounted vehicle according to (4).
The first bent portion is
The bottom (bottom 41vd) extending in the vehicle width direction and
An inclined surface (inclined surface 41 vs) provided on at least one side of the bottom portion in the vehicle width direction and inclined upward.
A saddle-mounted vehicle including a through hole (through hole 48) provided in a connection portion (connection portion 41ds) between the bottom portion and the inclined surface.

According to (5), at least one of the bottom portion extending in the vehicle width direction of the first bent portion is provided with an inclined surface that inclines upward to the vehicle body, and a through hole is provided at the connecting portion between the bottom portion and the inclined surface. Therefore, the water accumulated on the plate member when parking using the side stand can be drained from the through hole.

(6) The saddle-mounted vehicle according to (4) or (5).
The plate body is provided with fastening portions (fastening portions 47) to be fastened to the lower frame on both sides in the vehicle width direction.
A saddle-mounted vehicle in which the fastening portion is fastened to the lower frame together with the flange joint portion via a rubber member (rubber member 50).

According to (6), since the fastening portion provided on the plate body is fastened to the lower frame together with the flange joint portion via the rubber member, the vibration transmitted from the lower frame portion to the fuel tank can be reduced.

(7) The saddle-mounted vehicle according to any one of (1) to (6).
A saddle-mounted vehicle in which the length (length L2) of the plate member is shorter than the maximum length (maximum length L1) of the flange joint in the vehicle width direction.

According to (7), since the length of the plate member is shorter than the maximum length of the flange joint in the vehicle width direction, it is possible to prevent the plate member from projecting in the vehicle width direction from the flange joint.

Note that this application is based on a Japanese patent application filed on February 5, 2020 (Japanese Patent Application No. 2020-018178), the contents of which are incorporated herein by reference.

1 Saddle-mounted vehicle 2 Body frame 6 Down tube (lower frame)
37 Fuel tank 37a First fuel tank half body 37b Second fuel tank half body 37fa, 37fb Flange part 37f Flange joint part 37fs Outer surface 37ft Tip part 37ta, 37tb Fuel tank part 40 Plate member 40b Plate body 41 First wall part 41ds Connection part 41v First bending part 41vd Bottom part 41vs Inclined surface 42 Second wall part 42v Second bending part 47 Fastening part 48 Through hole 50 Rubber member

Claims

With the fuel tank (37)
A saddle-mounted vehicle (1) including a plate member (40) that covers a part of the fuel tank (37).
The fuel tank (37)
It is equipped with a first fuel tank half body (37a) and a second fuel tank half body (37b).
The first fuel tank half body (37a) and the second fuel tank half body (37b) are a fuel tank portion (37ta, 37tb) forming a fuel storage space and an outer circumference of the fuel tank portion (37ta, 37tb). It is provided with flange portions (37fa, 37fb) protruding outward from the portions, and is fixed by a flange joint portion (37f) in which the flange portions (37fa, 37fb) are brought into surface contact with each other.
The plate member (40) is
Of the first fuel tank half body (37a) and the second fuel tank half body (37b), on one of the fuel tank half bodies, on the outer surface (37fs) opposite to the mating surface of the flange portion (37fa). The plate body (40b) extending along the line and
A saddle-mounted vehicle (1) including a first wall portion (41) that covers the tip end portion (37ft) of the flange joint portion (37f) from the outside.
The saddle-mounted vehicle (1) according to claim 1.
The plate member (40) is a saddle-mounted vehicle (1) further including a second wall portion (42) that covers the fuel tank portion (37ta) of the one fuel tank half body (37a) from the outside.
The saddle-mounted vehicle (1) according to claim 2.
The fuel tank (37) is divided in the vertical direction.
One of the fuel tank halves (37a) is a fuel tank halves located below.
The first wall portion (41) and the second wall portion (42) are formed by bending from the plate body (40b).
The first wall portion (41) is bent upward from the first bent portion (41v) located on one side of the plate body (40b) in the front-rear direction of the saddle-mounted vehicle (1).
The second wall portion (42) is a saddle-mounted vehicle that bends downward from a second bent portion (42v) located on the other side of the plate body (40b) in the front-rear direction of the plate body (40b). (1).
The saddle-mounted vehicle (1) according to claim 3.
The fuel tank (37) is supported by the body frame (2) of the saddle-mounted vehicle (1) so as to be lowered rearward.
The plate member (40) is arranged between the lower frame (6) located at the rear lower portion of the fuel tank (37) of the vehicle body frame (2) and the flange joint portion (37f). , Saddle-mounted vehicle (1).
The saddle-mounted vehicle (1) according to claim 4.
The first bent portion (41v) is
The bottom (41vd) extending in the vehicle width direction and
An inclined surface (41vs) provided on at least one side of the bottom portion (41vd) in the vehicle width direction and inclined upward.
A saddle-mounted vehicle (1) comprising a through hole (48) provided in a connecting portion (41ds) between the bottom portion (41vd) and the inclined surface (41vs).
The saddle-mounted vehicle (1) according to any one of claims 4 or 5.
The plate body (40b) is provided with fastening portions (47) to be fastened to the lower frame (6) on both sides in the vehicle width direction.
The fastening portion (47) is a saddle-mounted vehicle (1) that is fastened to the lower frame (6) together with the flange joint portion (37f) via a rubber member (50).
The saddle-mounted vehicle (1) according to any one of claims 1 to 6.
A saddle-mounted vehicle (1) in which the length (L2) of the plate member (40) is shorter than the maximum length (L1) of the flange joint (37f) in the vehicle width direction.