JP7303839B2 - saddle-riding vehicle - Google Patents

Description

The present invention relates to a saddle-ride type vehicle.

Among straddle-type vehicles, there is a scooter-type vehicle having a step floor on which a passenger puts his or her feet (see, for example, Patent Document 1). In this type of vehicle, the vehicle body frame may be configured to receive the load of the occupant via the step floor by providing the vehicle body frame with a support portion that supports the step floor.

Republished WO2019/064601

However, depending on the shape of the vehicle body frame, there may be restrictions on the arrangement of the support portions. Therefore, in the conventional straddle-type vehicle, there is still room for improvement in terms of enlarging the area of the step floor supported by the support portion.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a straddle-type vehicle having a wide-area step floor.

The saddle-ride type vehicle of the present invention comprises a step floor (50) on which an occupant places his or her feet, a head pipe (21), a pair of left and right down frames (22) extending downward from the head pipe (21), and the pair of and a lower frame (23) extending rearward from a lower portion of each of the down frames (22) of the step floor (50). The pair of down frames (22) approach each other toward the lower frame (23).

According to the present invention, the lower frames are arranged on the inner side in the vehicle width direction, compared to a configuration in which the down frames extend parallel to each other or separate from each other toward the lower frame side. This allows the support portion to extend longer from the lower frame. Therefore, the step floor supported by the supporting portion can be provided over a wide area.

In the straddle-type vehicle described above, the support portion (27) may extend outwardly in the vehicle width direction and forwardly of the vehicle from a joint portion to the lower frame (23).

ADVANTAGE OF THE INVENTION According to this invention, a support part can be extended longer from a lower frame, suppressing the dimension expansion of a support part in a vehicle width direction. Therefore, it is possible to suppress the outward expansion in the vehicle width direction due to the increase in the area of the step floor while ensuring the supporting rigidity of the step floor by the supporting portion.

In the straddle-type vehicle, an upper frame (25) extending rearward from one of the down frame (22) and the head pipe (21) above the lower frame (23) in a side view of the vehicle; a center tunnel (65) extending longitudinally along the vehicle width center (CL) of the vehicle and covering the upper frame (25), wherein the step floor (50) extends into the center tunnel (65) of the vehicle; They may be adjacent on the outside in the width direction.

According to the present invention, it is possible to increase the area of the step floor located outside the center tunnel in a configuration in which the step floor cannot be expanded inward in the vehicle width direction due to the presence of the center tunnel while ensuring frame rigidity by the upper frame. can.

In the straddle-type vehicle described above, the upper frame (25) may include a bent portion (25a) bent inward when viewed from above the vehicle.

According to the present invention, the space outside the vehicle width direction of the upper frame positioned above the supporting portion is widened compared to a configuration in which the upper frame extends substantially linearly along the front-rear direction when viewed from above the vehicle. can be done.

In the straddle-type vehicle described above, the support portion (27) may be arranged forward and rearward of the bent portion (25a).

According to the present invention, as the supportable range of the step floor by the support portion is expanded, the step floor can be formed to have a large area to form a wide space for the occupant's feet to rest on.

The straddle-type vehicle further includes a connecting portion (32) that connects the down frame (22) and the upper frame (25), and the connecting portion (32) is folded outward in the vehicle width direction. The folded portion (32a) is provided at the rear edge of the connecting portion (32) and extends from a portion overlapping the down frame (22) in a vehicle side view to the upper frame (25). It may extend continuously over a portion overlapping with .

According to the present invention, since the down frame and the upper frame are fixed to each other via the connecting portion, the down frame and the upper frame can be reinforced. In particular, it is possible to improve the rigidity of the upper frame having the bent portion. Furthermore, since the folded portion continuously extends from the portion overlapping the down frame to the portion overlapping the upper frame, bending of the connecting portion is suppressed, and the down frame and the upper frame can be reinforced more effectively.

According to the present invention, it is possible to provide a straddle-type vehicle having a wide-area step floor.

It is a left side view showing the motorcycle of the embodiment. 1 is a perspective view showing a body frame of an embodiment; FIG. It is a front view showing the body frame of the embodiment. It is a top view showing the body frame of an embodiment. It is a side view showing the body frame of the embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. Note that directions such as front, rear, up, down, left, and right in the following description are the same as the directions of the vehicle described below. That is, the vertical direction corresponds to the vertical direction, and the horizontal direction corresponds to the vehicle width direction. In the drawings used for the following description, an arrow UP indicates upward, an arrow FR indicates forward, and an arrow LH indicates leftward.

First, a schematic configuration of the entire motorcycle of the embodiment will be described.
FIG. 1 is a left side view showing the motorcycle of the embodiment.
As shown in FIG. 1, the motorcycle 1 of this embodiment is a scooter-type saddle-ride type vehicle having a step floor 50 on which a rider seated on a seat 8 puts his/her feet. A motorcycle 1 is supported by a body frame 2, a front wheel 3 steerably supported by the body frame 2, a swing-type power unit 4 supported by the body frame 2 so as to be vertically swingable, and the power unit 4. It comprises a rear wheel 5 and a vehicle cover 6 forming the outer shell of the vehicle.

FIG. 2 is a perspective view showing the body frame of the embodiment.
As shown in FIG. 2, the body frame 2 includes a head pipe 21, a down frame 22, a lower frame 23, a rear frame 24, an upper frame 25, and a seat rail 26, which are welded together. joined together.

The head pipe 21 is arranged at the front end of the vehicle body frame 2 . The head pipe 21 is arranged on the vehicle width center of the vehicle (see FIG. 3).

FIG. 3 is a front view showing the body frame of the embodiment.
As shown in FIGS. 2 and 3, a pair of left and right down frames 22 are provided. Down frame 22 is coupled to head pipe 21 . The down frame 22 extends downward from the head pipe 21 . The down frame 22 includes a spaced portion 22a that is spaced apart from each other as it goes downward, and an approaching portion 22b that is located below the spaced portion 22a and approaches each other as it goes downward. The spacing portion 22 a includes the upper end portion of the down frame 22 . The approaching portion 22b includes the lower end portion of the down frame 22. As shown in FIG. A lower end portion of the down frame 22 is positioned inside in the vehicle width direction of a portion of the down frame 22 that is positioned on the outermost side in the vehicle width direction. The separating portion 22a and the approaching portion 22b are connected to an intermediate portion 22c extending substantially parallel to each other. Note that the intermediate portions do not have to extend parallel to each other, and for example, they may extend at a smaller angle of inclination with respect to the vertical direction than the separated portion 22a and the closer portion 22b when viewed from the front.

As shown in FIG. 2, a pair of lower frames 23 are provided on the left and right. Lower frame 23 is coupled to the lower end of down frame 22 . The lower frame 23 extends rearward from the lower ends of the pair of down frames 22 . That is, the lower frame 23 extends rearward from the lower end of the approaching portion 22b of the down frame 22. As shown in FIG. The lower frames 23 are separated from each other as they go rearward from the lower ends of the approaching portions 22b of the down frames 22 . The lower frame 23 extends linearly.

FIG. 4 is a plan view showing the body frame of the embodiment.
As shown in FIGS. 2 and 4, a support bracket 27 (support portion) is coupled to the lower frame 23 . A pair of support brackets 27 are coupled to the left and right lower frames 23 respectively. The support brackets 27 are arranged at intervals in the extending direction of the lower frame 23 on the left and right sides of the vehicle. The support brackets 27 are arranged in front and behind bent portions 25a (described later) of the upper frame 25 on the left and right sides of the vehicle, respectively.

The support bracket 27 is coupled to a portion of the outer surface of the lower frame 23 facing outward in the vehicle width direction. The support bracket 27 extends outward from the lower frame 23 in plan view from above. Specifically, the support bracket 27 protrudes in a direction orthogonal to the extending direction of the lower frame 23 in a plan view, and extends outward and forward in the vehicle width direction from the lower frame 23 .

FIG. 5 is a side view showing the body frame of the embodiment.
As shown in FIGS. 2 and 5, the support bracket 27 has an upper surface 27a extending substantially horizontally. The upper surface 27a is formed in a rectangular shape whose longitudinal direction is the direction in which the support bracket 27 protrudes. The support bracket 27 is made of a metal plate. The support bracket 27 has a top plate portion 28 having an upper surface 27a and a pair of side plate portions 29 extending downward from both longitudinal side edges of the top plate portion 28. The support bracket 27 is formed in a groove shape opening downward. ing. The support bracket 27 is coupled to the lower frame 23 at least at the side plate portion 29 . The side plate portion 29 is formed so as to taper from the connection portion with the lower frame 23 toward the tip of the top plate portion 28 . A lightening hole is formed in the side plate portion 29 . Through holes through which fastening members such as screws are inserted are formed in the top plate portion 28 .

As shown in FIG. 2, a pair of rear frames 24 are provided on the left and right. Rear frame 24 is coupled to the rear end of lower frame 23 . The rear frame 24 extends upward from rear end portions of the pair of lower frames 23 . In this embodiment, the down frame 22, the lower frame 23, and the rear frame 24 are integrally formed of the same member on each side.

A pair of left and right upper frames 25 are provided. The upper frame 25 is arranged above the lower frame 23 in a side view. Upper frame 25 is coupled to down frame 22 and rear frame 24 . The upper frame 25 is coupled to a portion of the down frame 22 located below the coupling portion to the head pipe 21 . In this embodiment, the upper frame 25 is connected to the intermediate portion 22c of the down frame 22. As shown in FIG. The upper frame 25 extends rearward from the down frame 22 . A rear end portion of the upper frame 25 is coupled to a portion of the rear frame 24 located below the upper end portion. The upper frame 25 linearly extends rearwardly downward when viewed from the side. The upper frame 25 may be coupled to the head pipe 21 at its front end.

As shown in FIG. 4, the upper frame 25 includes a front portion 25f that extends inward in the vehicle width direction as it goes rearward from a joint portion to the down frame 22, and a rear end of the front portion 25f that extends toward the vehicle as it goes rearward. and a rear portion 25r extending outward in the width direction. Thus, the upper frame 25 has a bent portion 25a bent inward in the vehicle width direction in a plan view. The pair of upper frames 25 are bent in a plan view so as to come closest to each other at bent portions 25a located in their intermediate portions. The connecting portion between the upper frame 25 and the down frame 22 is located outside the connecting portion between the lower frame 23 and the down frame 22 in the vehicle width direction. A front portion 25f of the upper frame 25 intersects the lower frame 23 in plan view. The upper frame 25 extends inside the support bracket 27 in the vehicle width direction in plan view.

As shown in FIG. 2, a pair of seat rails 26 are provided on the left and right sides. The seat rail 26 is coupled to the rear portion 25r of the upper frame 25. As shown in FIG. The seat rail 26 extends rearward and upward from the upper frame 25 . An upper end portion of the rear frame 24 is coupled to an intermediate portion of the seat rail 26 from below. Rear end portions of the seat rails 26 are connected to each other by a rear cross plate 30 . The seat rails 26 support the seat 8 arranged thereabove.

The body frame 2 includes an upper connecting portion 31, a lower connecting portion 32 (connecting portion), an upper cross member 33, a lower cross member 34, a front cross member 35, a rear cross member 36, and a pivot support portion 37. , is further provided.

A pair of upper connecting portions 31 are provided on the left and right sides. The upper connecting portion 31 connects the down frame 22 and the upper frame 25 on the left and right sides of the vehicle. The upper connecting portion 31 is coupled to the spaced portion 22a of the down frame 22 from behind. The upper connecting portion 31 linearly extends rearward and downward in a side view from the connecting portion to the down frame 22 and is connected to the upper frame 25 from above. The upper connecting portion 31 is coupled to the vicinity of the rear end of the front portion 25f of the upper frame 25. As shown in FIG. The upper connecting portion 31 extends rearward and outward in the vehicle width direction from the joint portion to the down frame 22 in plan view, and then bends and extends rearward. The upper connecting portion 31 is positioned inside the front portion 25f of the upper frame 25 in the vehicle width direction in plan view.

A pair of lower connecting portions 32 are provided on the left and right sides. The lower connecting portion 32 is formed in a plate shape, and connects the down frame 22 and the upper frame 25 on the left and right sides of the vehicle. The lower connecting portion 32 is connected to the approaching portion 22b of the down frame 22 from the outside and rear in the vehicle width direction. The lower connecting portion 32 extends rearward and upward in a side view from the connecting portion to the down frame 22 while avoiding the connecting portion between the down frame 22 and the upper frame 25, and connects to the upper frame 25 from outside and below in the vehicle width direction. there is

The lower connecting portion 32 includes a folded portion 32a folded outward in the vehicle width direction. The folded portion 32a is provided from the lower end to the upper end of the rear edge of the connecting portion 32, and extends in a curved manner so as to be depressed forward and upward. The folded portion 32 a continuously extends from a portion overlapping the down frame 22 to a portion overlapping the upper frame 25 in a side view.

The upper cross member 33 connects the pair of down frames 22 . The upper cross member 33 is positioned below the head pipe 21 in a front view and extends along the vehicle width direction. In this embodiment, the upper cross member 33 is coupled to the intermediate portion 22c of the down frame 22. As shown in FIG.

The lower cross member 34 connects the pair of down frames 22 . The lower cross member 34 is arranged below the upper cross member 33 . The lower cross member 34 is coupled to a portion of the down frame 22 located above the lower end. In this embodiment, the lower cross member 34 is coupled to the proximal portion 22b of the down frame 22. As shown in FIG.

The front cross member 35 connects the pair of lower frames 23 . The front cross member 35 is connected to the front end of the lower frame 23 . The front cross member 35 protrudes downward from the lower frame 23 when viewed from the side. The front cross member 35 is formed in a U-shape opening upward when viewed from the front so that the intermediate portion extends in the vehicle width direction below and inside the vehicle width direction from both end portions.

The rear cross member 36 connects the pair of lower frames 23 . The rear cross member 36 is arranged rearward of the front cross member 35 . The rear cross member 36 protrudes upward from the lower frame 23 in a side view. The rear cross member 36 is coupled to a portion of the lower frame 23 located forward of the engine 41 . The rear cross member 36 is formed in a U shape that opens downward, and is coupled to the left and right lower frames 23 at both ends.

A pair of left and right pivot support portions 37 are provided. Pivot support 37 is coupled to rear frame 24 and seat rails 26 . The pivot support portion 37 is formed to protrude rearward from the rear frame 24 and downward from the seat rail 26 . The pair of pivot support portions 37 supports the power unit 4 so as to be vertically swingable via a pivot shaft (not shown).

The front wheel 3 is pivotally supported by the lower ends of a pair of left and right front forks 11 . Upper ends of the pair of front forks 11 are connected by a bottom bridge 12 extending in the vehicle width direction. The front fork 11 is steerably supported by a head pipe 21 via a steering stem 13 fixed to the bottom bridge 12 . A handlebar 14 for steering is attached to the upper portion of the steering stem 13 .

The power unit 4 is a so-called unit swing type rear suspension. The power unit 4 drives rear wheels 5 which are drive wheels. The power unit 4 is supported by the vehicle body frame 2 via a pivot support portion 37 so as to be able to swing vertically. The power unit 4 includes an engine 41 , a transmission device 42 and an air cleaner 43 . The engine 41 is arranged so that the crankshaft extends along the vehicle width direction. The transmission device 42 transmits driving force generated by the engine 41 to the rear wheels 5 . The transmission device 42 is arranged on the left side of the rear wheel 5 and is provided integrally with the engine 41 . The air cleaner 43 is arranged above the transmission device 42 .

The vehicle cover 6 is composed of a plurality of exterior panels. The vehicle cover 6 includes a front cover 61, a front fender 62, a handle cover 63, a leg shield 64, a center tunnel 65, a lower cover 66, side covers 67, a rear under cover 68, and a rear fender 69. have.

The front cover 61 is provided so as to cover the head pipe 21 . A headlight is provided on the front cover 61 . The front fender 62 is provided to cover the front wheel 3 from above and from behind. The handle cover 63 is provided so as to cover the central portion of the handlebar 14 and the upper portion of the steering stem 13 . The leg shield 64 is provided so as to cover the down frame 22 and the legs of the driver from the front.

The center tunnel 65 extends rearward from the leg shield 64 along the vehicle width center. The center tunnel 65 covers the upper frame 25 from outside and above in the vehicle width direction.

The lower covers 66 are arranged on both left and right sides of the center tunnel 65 . The lower cover 66 is provided below the center tunnel 65 so as to cover the left and right lower frames 23 . The upper surface of the lower cover 66 is provided with a step floor 50 on which the passenger's feet are placed. A pair of step floors 50 are provided on the left and right sides and are adjacent to the center tunnel 65 on the outside in the vehicle width direction. The step floor 50 projects outward in the vehicle width direction from the lower edge of the center tunnel 65 . The step floor 50 is supported by the support bracket 27 from below.

A side cover 67 extends rearward from the center tunnel 65 . The side covers 67 are provided so as to cover the left and right rear frames 24 from outside in the vehicle width direction. A seat 8 is attached to the upper portion of the side cover 67 . The rear under cover 68 is provided so as to partially cover the opening below the side cover 67 . The rear fender 69 is provided to cover the rear wheel 5 from above and from behind.

It should be noted that the plurality of exterior panels constituting the vehicle cover 6 do not need to be divided into the respective portions described above, and may be arranged so as to straddle the boundaries of the respective portions, or each portion may be composed of a plurality of exterior panels. may be

As described above, the motorcycle 1 of this embodiment includes the pair of left and right down frames 22 extending downward from the head pipe 21, the lower frames 23 extending rearward from the lower portions of the pair of down frames 22, and the lower frame a support bracket 27 coupled to 23 and extending outwardly in plan view to support the step floor 50; The pair of down frames 22 approach each other toward the lower frame 23 side. According to this configuration, the lower frames 23 are arranged inside in the vehicle width direction, compared to a configuration in which the down frames extend parallel to each other or separate from each other toward the lower frame side. This allows the support bracket 27 to extend longer from the lower frame 23 . Therefore, the step floor 50 supported by the support bracket 27 can be provided over a wide area.

The support bracket 27 extends outward and forward in the vehicle width direction from the joint to the lower frame 23 . According to this configuration, the support bracket 27 can be extended longer from the lower frame 23 while suppressing the dimensional expansion of the support bracket 27 in the vehicle width direction. Therefore, the expansion of the step floor 50 to the outside in the vehicle width direction due to the increase in area of the step floor 50 can be suppressed while ensuring the support range of the step floor 50 by the support bracket 27 .

The step floor 50 is adjacent to the center tunnel 65 on the outside in the vehicle width direction. According to this configuration, it is possible to increase the area of the step floor 50 in a configuration in which the presence of the center tunnel 65 prevents the step floor 50 from expanding inward in the vehicle width direction.

The motorcycle 1 further includes an upper frame 25 extending rearward from the down frame 22 above the lower frame 23 in a side view of the vehicle. The upper frame 25 has a bent portion 25a bent inward in plan view. According to this configuration, the space outside the upper frame 25 positioned above the support bracket 27 in the vehicle width direction can be increased compared to the configuration in which the upper frame extends substantially linearly along the front-rear direction in plan view. can be done.

The support bracket 27 is arranged forward and rearward of the bent portion 25 a of the upper frame 25 . According to this configuration, as the supportable range of the step floor 50 by the support bracket 27 is expanded, the step floor 50 can be formed to have a large area to form a wide space for the occupant's feet to rest on.

The motorcycle 1 further includes a connecting portion 32 that connects the down frame 22 and the upper frame 25 . As a result, the down frame 22 and the upper frame 25 are fixed to each other via the connecting portion 32, so that the down frame 22 and the upper frame 25 can be reinforced. In particular, it is possible to improve the rigidity of the upper frame 25 having the bent portion 25a. Further, the connecting portion 32 includes a folded portion 32a folded outward in the vehicle width direction. The folded portion 32 a is provided at the rear edge of the connecting portion 32 and continuously extends from a portion overlapping the down frame 22 to a portion overlapping the upper frame 25 in a side view. Therefore, the bending of the connecting portion 32 can be suppressed, and the down frame 22 and the upper frame 25 can be reinforced more effectively.

Further, by providing the folded portion 32 a in the connecting portion 32 , it is possible to reduce the area of the connecting portion 32 in a side view while suppressing a decrease in rigidity of the connecting portion 32 . As a result, it is possible to secure a working space for assembling the fuel tank, which is arranged so as to be surrounded by the vehicle body frame 2, and to improve workability when assembling the fuel tank.

It should be noted that the present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications are conceivable within its technical scope. INDUSTRIAL APPLICABILITY The present invention can be applied to all saddle-riding vehicles in which the driver straddles the vehicle body. That is, the present invention is applicable not only to motorcycles but also to three-wheeled motor vehicles. Further, in the above embodiment, the motorcycle 1 is an engine vehicle, but the present invention can also be applied to an electric vehicle having a motor as a power unit.

Further, in the above embodiment, the support bracket 27 protrudes perpendicularly from the lower frame 23 in a plan view, but the configuration is not limited to this. The support bracket may protrude in a direction intersecting with the extending direction of the lower frame 23 at an angle of less than 90° in plan view.

In addition, in the above-described embodiment, two support brackets 27 are provided on each of the left and right sides of the vehicle, but the configuration is not limited to this. That is, one support bracket or three or more support brackets may be provided on each of the left and right sides of the vehicle.

Also, in the above embodiment, the approaching portion 22b of the down frame 22 includes the lower end portion of the down frame 22, but the configuration is not limited to this. The lower end portion of the down frame is positioned below the approaching portion, and the portions of the down frame positioned between the approaching portion and the lower end extend parallel to each other when viewed from the front, or extend away from each other as they go downward. may be In this case, it is desirable that the lower end portion of the down frame is located inside in the vehicle width direction of the portion of the down frame that is located on the outermost side in the vehicle width direction.

Further, although the upper frame 25 extends rearward from the down frame 22 in the above embodiment, the upper frame may extend rearward from the head pipe.

In addition, it is possible to appropriately replace the components in the above-described embodiments with well-known components without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1... Motorcycle (saddle type vehicle) 21... Head pipe 22... Down frame 23... Lower frame 25... Upper frame 27... Support bracket (support part) 32... Lower connection part (connection part) 50... Step floor 65... Center Tunnel CL…Car width center

Claims (5)

a step floor (50) on which the passenger puts his or her feet;
a head pipe (21);
a pair of left and right down frames (22) extending downward from the head pipe (21);
a lower frame (23) extending rearward from lower portions of the pair of down frames (22);
a support portion (27) coupled to the lower frame (23), extending outward in the vehicle width direction from the lower frame (23), and supporting the step floor (50);
an upper frame (25) extending rearward from one of the down frame (22) and the head pipe (21) above the lower frame (23) in a vehicle side view;
with
The pair of down frames (22) approach each other toward the lower frame (23),
The upper frame (25) has a bent portion (25a) bent inward in the vehicle width direction when viewed from above the vehicle ,
The support portion (27) is arranged forward and rearward of the bending portion (25a),
saddle-type vehicle. The support portion (27) extends outward in the vehicle width direction and in front of the vehicle from a joint portion to the lower frame (23).
A straddle-type vehicle according to claim 1. further comprising a center tunnel (65) extending in the longitudinal direction along the vehicle width center (CL) of the vehicle and covering the upper frame (25);
The step floor (50) is adjacent to the center tunnel (65) on the outside in the vehicle width direction,
A straddle-type vehicle according to claim 1 or 2. further comprising a connecting portion (32) connecting the down frame (22) and the upper frame (25),
The connecting portion (32) includes a folded portion (32a) folded outward in the vehicle width direction,
The folded portion (32a) is provided at the rear edge of the connecting portion (32), and extends continuously from a portion overlapping with the down frame (22) to a portion overlapping with the upper frame (25) in a vehicle side view. there is
A straddle-type vehicle according to any one of claims 1 to 3 . The step floor (50) overlaps the down frame (22) in a side view,
A straddle-type vehicle according to any one of claims 1 to 4 .

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