JP2023032142A - Vehicle body rear part structure of saddle-riding type vehicle - Google Patents

Abstract

To provide a vehicle body rear part structure of a saddle-riding type vehicle which inhibits increase of the weight of a vehicle body frame and reduces attachment work hours of the vehicle body frame and may support a buffer while reinforcing a rear part of the vehicle body frame.SOLUTION: In a vehicle body rear part structure of a saddle-riding type vehicle, a buffer 29 is provided between a rear frame part 10B extending rearward from a main frame part 10A and a swing arm 23 of a rear wheel suspension device. The rear frame part 10B includes: a seat frame 11 extending rearward from the main frame part 10A; a sub frame 12 which extends rearward from the main frame part 10A below the seat frame 11, gets closer to the seat frame 11 toward a rearward direction, and is connected at a rear end part 12a to the seat frame 11; and a connection member 15 which connects the seat frame 11 with the sub frame 12 at the front relative to the rear end part 12a of the sub frame 12. An upper end part 29a of the buffer 29 is supported by the connection member 15.SELECTED DRAWING: Figure 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body rear structure for a saddle-ride type vehicle.

Conventionally, in the rear body structure of a saddle-ride type vehicle in which a swing arm that supports a rear wheel is connected to the rear part of the body frame via a shock absorber, the upper end of the shock absorber is attached to a reinforcing member of the rear frame part provided at the rear part of the body frame. There is one that is connected (see, for example, Patent Document 1). The reinforcing member is, for example, a gusset arranged to straddle the connecting portion of two frame members that constitute the rear frame portion.

JP 2015-174455 A

In the conventional technology described above, the gusset is a heavy object elongated along the longitudinal direction of the rear frame portion. In addition, the gusset has a long welding length to the rear frame portion, increasing the number of man-hours for installation. Therefore, it is desirable to suppress the increase in weight of the body frame and the number of man-hours required for installation. However, simply reducing the size and weight of the gusset or reducing the number of welding steps may pose a problem in terms of reinforcement that has been performed with conventional gussets.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rear body structure for a saddle-riding type vehicle that is capable of suppressing an increase in the weight of the body frame and the number of man-hours required for mounting the body frame, while effectively reinforcing the rear portion of the body frame while supporting a shock absorber. It is in.

As means for solving the above problems, the invention recited in claim 1 provides a main frame portion (10A) extending from a head pipe (7) supporting a front wheel suspension to a pivot frame (9) supporting a rear wheel suspension, a rear frame portion (10B) extending rearward from the main frame portion (10A), and a shock absorber ( 29), the rear frame portion (10B) includes a seat frame (11) extending rearward from the main frame portion (10A) and a seat frame (11) below the seat frame (11). a subframe (12) extending rearward from the main frame portion (10A), approaching the seat frame (11) toward the rear, and connecting a rear end portion (12a) to the seat frame (11); a connecting member (15) that connects between the seat frame (11) and the sub-frame (12) forward of the rear end (12a) of the sub-frame (12), wherein the connecting member (15 ) supporting the upper end (29a) of the shock absorber (29).
According to this configuration, a connecting member that connects between the seat frame and the sub-frame is provided in front of the rear end of the sub-frame (the connection portion with the seat frame), thereby forming a truss structure including the connecting member. be done. Therefore, it is possible to effectively reinforce the connecting portion between the seat frame and the sub-frame while reducing the size of the connecting member. Therefore, it is possible to suppress an increase in the weight of the connecting member and the number of man-hours required for attachment. In addition, the connecting member can be used as a supporting member for the upper end of the shock absorber, thereby rationalizing the structure of the rear portion of the vehicle body.

According to the second aspect of the present invention, the connection member (15) and the portion of the seat frame (11) and the sub-frame (12) located behind the connection member (15) provide a vehicle side surface. It is characterized in that a visually closed space (S1) is formed.
According to this configuration, the area surrounded by the connecting member, the seat frame and the sub-frame is used as a space, so that the weight of the rear frame can be reduced.

In the third aspect of the invention, the subframe (12) supports a passenger step (26), and the connecting member (15) is arranged behind the passenger step (26). It is characterized by being
According to this configuration, the foot placed on the passenger step can be kept away from the shock absorber. Further, since the sub-frame approaches the seat frame toward the rear side, the connection member can be made as small as possible by arranging the connection member on the rear side.

In the fourth aspect of the invention, the connecting member (15) supports the upper end (29a) of the shock absorber (29) on the outside in the vehicle width direction, and the outer surface (15k) of the connecting member (15) is arranged outside the subframe (12) in the vehicle width direction.
According to this configuration, the distance in the vehicle width direction from the connecting member to the upper end portion of the shock absorber can be shortened as much as possible, and the supporting strength of the shock absorber at the connecting member can be increased. Also, interference between the buffer and the subframe can be easily avoided.

In the fifth aspect of the invention, the connecting member (15) includes a pair of plate-like members (15a, 15b) that sandwich the seat frame (11) and the sub-frame (12) in the vehicle width direction. It is characterized by
According to this configuration, the connecting member can be configured simply and lightly by the pair of plate-like members.

A sixth aspect of the present invention is characterized in that the connecting member (15) has an inter-member connecting portion (15x) that connects the pair of plate-like members (15a, 15b).
According to this configuration, the rigidity of the connecting member can be further enhanced.

The invention as recited in claim 7 is characterized in that the inter-member connecting portion (15x) is provided on the vehicle front side of the connecting member (15).
According to this configuration, the pair of plate-shaped members are connected to each other on the vehicle front side of the connecting member, so that the flow of running wind can be easily passed without being obstructed (the rear side is connected and the front side is opened). running resistance easily).

According to the present invention, the seat frame and the sub-frame extending rearward in the rear frame portion are connected by the connecting member in front of the connection portion between the frames, thereby connecting the frames while reducing the size of the connecting member. This effectively reinforces the rear portion of the vehicle body, suppresses an increase in the weight of the connecting member and the number of man-hours for mounting the connecting member, and utilizes the connecting member as a support member for the upper end portion of the shock absorber, thereby streamlining the structure of the rear portion of the vehicle body.

1 is a left side view of essential parts of a motorcycle according to an embodiment of the present invention; FIG. Fig. 3 is a right side view of the periphery of the rear frame portion of the motorcycle; 3 is a cross-sectional view taken along line III-III of FIG. 2; FIG. FIG. 3 is a sectional view taken along IV-IV in FIG. 2; FIG. 3 is a cross-sectional view taken along the line VV of FIG. 2;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that directions such as front, rear, left, and right in the following description are the same as directions in the vehicle described below unless otherwise specified. An arrow FR indicating the front of the vehicle, an arrow LH indicating the left of the vehicle, and an arrow UP indicating the upper side of the vehicle are shown at appropriate locations in the drawings used in the following description.

<Whole vehicle>
1 and 2 show the essential parts of a motorcycle (saddle type vehicle) 1 of the embodiment. The motorcycle 1 includes front wheels (not shown) steered by a bar handle (not shown) and rear wheels 5 driven by a power unit 4 . The motorcycle 1 is a saddle-riding type vehicle in which a rider straddles the vehicle body.
The motorcycle 1 has a vehicle body frame 6 that serves as a skeleton of the vehicle body. The body frame 6 includes a head pipe 7 , a main frame (not shown), a pivot frame 9 , a pair of left and right seat frames 11 , a pair of left and right sub-frames 12 , and a down frame 13 .

The head pipe 7 steerably supports steering components (not shown) including front wheels. The main frame extends obliquely downward rearward from the head pipe 7 and supports a fuel tank 21 . A pivot frame 9 extends downward from the rear end of the main frame. The pivot frame 9 is provided with a pivot shaft 22 extending in the vehicle width direction. A front end of a swing arm 23 that supports the rear wheel 5 so as to swing up and down is attached to the pivot shaft 22 . The left and right seat frames 11 extend rearward from the upper portion of the main frame and support the seat 24 . The left and right sub-frames 12 each extend obliquely rearward and upward from the pivot frame 9 and are coupled to the rear portion of the seat frame 11 . The sub-frame 12 is inclined rearwardly upward so as to approach the seat frame 11 toward the rear side, and the rear end portion 12a is connected to the rear lower side of the seat frame 11 at an acute angle in a side view.

Here, the head pipe, main frame and pivot frame 9 constitute a main frame portion 10A of the vehicle body frame 6. As shown in FIG. The main frame portion 10A extends from a head pipe 7 that steerably supports a front wheel suspension including a front fork (not shown) to a pivot frame 9 that supports a swing arm 23 of a rear wheel suspension so that it can swing up and down. It is an integral body frame part provided.
Also, the seat frame 11 and the sub-frame 12 constitute a rear frame portion 10B of the vehicle body frame 6 . The rear frame portion 10B extends rearward from the main frame portion 10A, supports the seating load of the occupant, and supports the upper end portion 29a of the shock absorber 29 of the rear wheel suspension system.

A step frame 14 is attached in the middle of the left and right sub-frames 12, and the step frame 14 supports a passenger step 26 on which a rear passenger puts his or her feet. A guard member 16 is attached across the rear end of the subframe 12 and the step frame 14 on one of the left and right sides (left side) of the vehicle body to guard the rear passenger's clothes from touching the rear wheel 5. there is The guard member 16 is provided integrally with a footrest on which a rear fellow passenger who rides sideways puts his or her feet. An exhaust muffler 33 extending from the power unit 4 is arranged outside the rear wheel 5 in the vehicle width direction on one side (left side) of the vehicle body.
The down frame 13 extends downward from the head pipe 7 and supports the power unit 4 together with the pivot frame 9 .

The seat 24 includes a driver's seat 24a on which the driver sits, and a passenger's seat 24b arranged behind the driver's seat 24a on which a fellow passenger sits. A lower portion extending from the rear portion of the fuel tank 21 to the front portion of the seat 24 is covered with a pair of left and right side covers 27 from the outside in the vehicle width direction. A rear cover 28 covers a range from below the rear portion of the seat 24 to the rear of the seat 24 . Between the rear end portions of the left and right side covers 27 and the left and right front end portions of the rear cover 28, the cushion connecting portions 12b of the vehicle body frame 6 are arranged. The cushion connecting portion 12b extends between the seat frame 11 and the subframe 12 in front of the rear end portion 12a of the subframe 12 . A pair of left and right shock absorbers 29 are arranged between the left and right cushion connecting portions 12b and the rear portions of the left and right arms of the swing arm 23 . A chain (not shown) for transmitting power from the power unit 4 to the rear wheel 5 and a chain cover 31 covering the chain are provided around the left arm of the swing arm 23 . The rear wheel 5 is covered with a rear fender 32 from above.

A connecting member 15 is provided between the seat frame 11 and the sub-frame 12 . The connecting member 15 connects the seat frame 11 and the sub-frame 12 in the vertical direction. The connecting member 15 is spaced forward from the rear end portion 12a of the sub-frame 12 (the connection portion with the seat frame 11). A support shaft 41 (see FIG. 5) extending in the vehicle width direction is fixed to the connecting member 15 . The connecting member 15 and the support shaft 41 constitute the cushion connecting portion 12b. A triangular closed space S1 is formed by the connecting member 15 and portions of the seat frame 11 and the sub-frame 12 located behind the connecting member 15 in a vehicle side view.

The center line 5b in FIG. 2 is a vertical line passing through the center of the axle 5a of the rear wheel 5 when viewed from the side of the vehicle, and the center line 41x in FIG. , respectively.
The connecting member 15 is spaced forward from the connecting portion 6 a between the seat frame 11 and the sub-frame 12 . The connection portion 6a is composed of a rear end portion 12a of the sub-frame 12 and a portion of the seat frame 11 facing the rear end portion 12a.

The connecting member 15 is positioned above the range between the front end 5c of the rear wheel 5 and the axle 5a in the vehicle side view. Further, the connection portion 6a is positioned above the axle 5a of the rear wheel 5 in the vehicle side view. Note that the connecting portion 6a may be arranged rearward of the axle 5a. That is, the rear end portion 12a of the sub-frame 12 is preferably connected to the rear side of the seat frame 11 as much as possible. By arranging the connecting portion 6a as far back as possible, the degree of freedom in arranging the connecting member 15 is increased, and the degree of freedom in the support position of the upper end portion 29a of the shock absorber 29 is increased.

Upper ends 29a of the left and right shock absorbers 29 are connected to and supported by the left and right connecting members 15 via support shafts 41, respectively, and a frame member that supports the grab rail 25 arranged behind the seat 24. The left and right front ends of 18 are connected and supported.
The connecting member 15 is arranged behind the passenger step 26 . Since the seat frame and the sub-frame are closer to each other toward the rear side, the connecting member 15 that connects them becomes smaller as it is positioned toward the rear side.

<Connecting member and shock absorber support structure>
As shown in FIGS. 3 and 4, each of the left and right connecting members 15 includes a pair of an inner plate-like member (plate-like member) 15a and an outer plate-like member (plate-like member) 15b.
The inner plate-like member 15a and the outer plate-like member 15b are arranged so as to sandwich the seat frame 11 and the sub-frame 12 separated in the vertical direction in the vehicle width direction. The inner plate-like member 15a and the outer plate-like member 15b are separated from each other in the vehicle width direction except for an inter-member connecting portion 15x, which will be described later.

The inner plate-like member 15a and the outer plate-like member 15b have an upper edge portion along the lower surface side of the seat frame 11, a lower edge portion along the upper surface side of the sub-frame 12, an upper edge portion and a lower edge portion in a vehicle side view. a leading edge extending between the leading edges of the portion and a trailing edge extending between the trailing edges of the upper and lower edges.

Upper edge portions of the inner plate-shaped member 15a and the outer plate-shaped member 15b are formed so as to sandwich the lower surface side of the seat frame 11 (along the outer peripheral surface). Lower edge portions of the inner plate-shaped member 15a and the outer plate-shaped member 15b are formed so as to sandwich the upper surface side of the sub-frame 12 (along the outer peripheral surface).
Upper edges of the inner plate-like member 15a and the outer plate-like member 15b are welded to the seat frame 11, and lower edges of the inner plate-like member 15a and the outer plate-like member 15b are attached to the sub-frame 12. Joined by welding.

The front edge of the inner plate member 15a is bent outward in the vehicle width direction, and the front edge of the outer plate member 15b is bent inward in the vehicle width direction. Front edge portions of the inner plate-like member 15a and the outer plate-like member 15b are adjacent to each other in the vehicle width direction and are joined by welding. Front edge portions of the inner plate-like member 15a and the outer plate-like member 15b constitute an inter-member connecting portion 15x (see FIG. 2) that connects the inner plate-like member 15a and the outer plate-like member 15b.

As shown in FIGS. 4 and 5, the inner plate member 15a includes a flat inner flat plate portion 15c along the vehicle side surface and an inner upper edge portion 15d extending upward from the inner flat plate portion 15c and coupled to the seat frame 11. , and an inner lower edge portion 15 e extending downward from the inner flat plate portion 15 c and coupled to the sub-frame 12 . The inner upper edge portion 15 d curves along the outer peripheral surface of the seat frame 11 , and the inner lower edge portion 15 e curves along the outer peripheral surface of the sub-frame 12 .

The outer plate-shaped member 15b includes a flat outer flat plate portion 15f, an outer upper edge portion 15g extending upward from the outer flat plate portion 15f and coupled to the seat frame 11, and a sub-frame 12 extending downward from the outer flat plate portion 15f. and an outer lower edge 15h connected to the . The outer upper edge portion 15g is curved along the outer peripheral surface of the seat frame 11, and the outer lower edge portion 15h is curved along the outer peripheral surface of the sub-frame 12. As shown in FIG.

Further, the outer plate-like member 15b is integrally provided with an outer bulging portion 15j that bulges outward in the vehicle width direction at substantially the center of the outer flat plate portion 15f. The outer bulging portion 15j is formed such that the outer side surface 15k on the outer side in the vehicle width direction is positioned further outside in the vehicle width direction than the outer ends of the seat frame 11 and the sub-frame 12 in the vehicle width direction. The rest of the outer flat plate portion 15f, excluding the outer bulging portion 15j, is positioned inward in the vehicle width direction from the outer ends of the seat frame 11 and the sub-frame 12 in the vehicle width direction.

As shown in FIG. 2, the connecting member 15 includes an inter-member connecting portion 15x that connects front edges of the inner plate-like member 15a and the outer plate-like member 15b. An upper end portion of the inter-member connection portion 15 x is coupled to the lower surface of the seat frame 11 , and a lower end portion of the inter-member connection portion 15 x is coupled to the upper surface of the sub-frame 12 . The inter-member connecting portion 15x may be formed separately from the inner plate-like member 15a and the outer plate-like member 15b, and may be connected to the inner plate-like member 15a and the outer plate-like member 15b.

As described above, the strength and rigidity of the connecting member 15 can be further improved by providing the inter-member connecting portion 15x to the connecting member 15 . As a result, the external force acting on the connecting member 15 from the road surface through the rear wheel 5 and the shock absorber 29 can be sufficiently received. Instead of (or in addition to) the member connecting portion 15x that connects the front edges of the inner plate-like member 15a and the outer plate-like member 15b, the rear edges of the inner plate-like member 15a and the outer plate-like member 15b are connected to each other. You may provide the connection part between members to connect.

A support shaft 41 extending in the vehicle width direction is attached to each of the left and right connecting members 15 .
The support shaft 41 integrally includes an inner portion 41a, a large diameter portion 41b, a support portion 41c, and a male screw portion 41d in order from the inner side in the vehicle width direction.
The inner portion 41a has a columnar shape extending in the vehicle width direction. The inner portion 41a passes through the inner flat plate portion 15c of the inner plate-like member 15a, the outer protruding portion 15j of the outer plate-like member 15b, and the flat washer 43 fixed to the outer protruding portion 15j in the vehicle width direction. are doing. The inner portion 41a is welded to the inner flat plate portion 15c.

The large-diameter portion 41b has a columnar shape extending in the vehicle width direction, and is shorter and larger in diameter than the inner portion 41a. The inner end surface of the large diameter portion 41b on the inner side in the vehicle width direction abuts against the flat washer 43. As shown in FIG. Thereby, the support shaft 41 is positioned with respect to the connecting member 15 in the vehicle width direction. The large-diameter portion 41b and the flat washer 43 and the flat washer 43 and the outward bulging portion 15j are welded together. That is, the support shaft 41 is welded to the inner plate member 15a and the outer plate member 15b.

The support portion 41c has a columnar shape extending in the vehicle width direction, and is formed to be longer and smaller in diameter than the large diameter portion 41b. The upper end portion 29a of the damper 29 is supported by the support portion 41c so as to be swingable about the axis. A flat washer 44 and a needle bearing 45 are fitted to the outer peripheral surface of the support portion 41c. The upper end portion 29 a of the shock absorber 29 is fitted to the outer peripheral surface of the needle bearing 45 . The flat washer 44 is arranged on the side of the large diameter portion 41b with respect to the needle bearing 45, and can come into contact with the outer end surface of the large diameter portion 41b on the outside in the vehicle width direction.

The male screw portion 41d extends along the vehicle width direction and is formed to have an outer diameter smaller than that of the support portion 41c. A pair of flat washers 47 are attached to the male screw portion 41 d , and the front end portion 18 a of the frame member 18 is attached between the pair of flat washers 47 . A nut (for example, a cap nut) 42 is screwed to the outer tip of the male threaded portion 41d in the vehicle width direction. The inner collar of the needle bearing 45 is pressed between the flat washer 47 on the inner side in the vehicle width direction and the flat washer 44 in contact with the large diameter portion 41b, so that the upper end portion 29a of the shock absorber 29 can swing. The dimensions in the vehicle width direction are secured.

The upper end portion 29a of the shock absorber 29 is supported on the support shaft 41 so as to be able to swing. Further, the support shaft 41 supports the front end portion 18a of the frame member 18 outside the upper end portion 29a of the shock absorber 29 in the vehicle width direction. The front end portion 18a is formed by flattening a pipe material forming the frame member 18 in the vehicle width direction. The support shaft 41 passes through the upper end portion 29a of the shock absorber 29 and the front end portion 18a of the frame member 18 . By screwing a nut 42 onto the tip of the support shaft 41 and tightening it, the upper end 29a of the shock absorber 29 and the front end 18a of the frame member 18 are supported by the cushion connecting portion 12b.

As described above, the rear body structure of the saddle-riding type vehicle in the above embodiment includes the main frame portion 10A extending from the head pipe 7 supporting the front wheel suspension to the pivot frame 9 supporting the rear wheel suspension, and and a rear frame portion 10B extending rearward from the portion 10A. A shock absorber 29 is provided between the rear frame portion 10B and the swing arm 23 of the rear wheel suspension system. a seat frame 11 extending rearward from 10A; and a sub-frame 12 extending rearward from the main frame portion 10A below the seat frame 11, approaching the seat frame 11 toward the rear, and connecting a rear end portion 12a to the seat frame 11. , and a connecting member 15 that connects between the seat frame 11 and the subframe 12 in front of the rear end portion 12a of the subframe 12, and the upper end portion 29a of the shock absorber 29 is supported by the connecting member 15. .

According to this configuration, the connecting member 15 connecting between the seat frame 11 and the sub-frame 12 is provided in front of the rear end portion 12a of the sub-frame 12 (the connecting portion with the seat frame 11). A truss structure including 15 is formed. Therefore, it is possible to effectively reinforce the connecting portion between the seat frame 11 and the sub-frame 12 while reducing the size of the connecting member 15 . Therefore, the weight increase of the connecting member 15 and the man-hour required for mounting can be suppressed. In addition, the connecting member 15 can be used as a support member for the upper end portion 29a of the shock absorber 29, so that the structure of the rear portion of the vehicle body can be rationalized.

Further, in the vehicle body rear structure of the saddle type vehicle, the connecting member 15 and the portions of the seat frame 11 and the sub-frame 12 located behind the connecting member 15 form a closed space S1 in a side view of the vehicle. Therefore, the weight of the rear frame portion 10B can be reduced.

In the vehicle body rear structure of the saddle-riding type vehicle, the sub-frame 12 supports the passenger step 26, and the connecting member 15 is arranged behind the passenger step 26. A foot placed on 26 can be kept away from the buffer 29. - 特許庁Further, since the sub-frame 12 approaches the seat frame 11 toward the rear side, the connection member 15 can be made as small as possible by arranging the connection member 15 on the rear side.

In the vehicle body rear structure of the saddle-riding type vehicle, the connecting member 15 supports the upper end portion 29a of the shock absorber 29 on the outside in the vehicle width direction, and the outer surface 15k of the connecting member 15 is positioned further than the seat frame 11 and the sub-frame 12. Since it is arranged on the outside in the vehicle width direction, the distance in the vehicle width direction from the connection member 15 to the upper end portion 29a of the shock absorber 29 can be shortened as much as possible, and the support strength of the shock absorber 29 in the connection member 15 can increase Also, interference between the buffer 29 and the subframe 12 can be easily avoided.

In the vehicle body rear structure of the saddle-riding type vehicle, the connecting member 15 includes a pair of the inner plate-like member 15a and the outer plate-like member 15b that sandwich the seat frame 11 and the sub-frame 12 in the vehicle width direction. The inner plate-like member 15a and the outer plate-like member 15b allow the connecting member 15 to be configured simply and lightly.

In the vehicle body rear structure of the saddle-riding type vehicle, the connecting member 15 includes the inter-member connecting portion 15x that connects the pair of the inner plate-like member 15a and the outer plate-like member 15b. You can improve it even more.

In the rear vehicle body structure of the saddle-riding type vehicle, the inter-member connecting portion 15x is provided on the vehicle front side of the connecting member 15. Since the two members 15b are connected to each other to close the space between the two members, the flow of running wind can be easily parried without being obstructed (that is, the rear sides of the inner plate-shaped member 15a and the outer plate-shaped member 15b are connected and the front side is closed). If the side is open, it tends to cause running resistance).

It should be noted that the present invention is not limited to the above embodiments. For example, the vehicle body rear portion structure of the present embodiment may be applied to a saddle type vehicle other than a motorcycle. The saddle type vehicle includes all types of vehicles in which the driver straddles the vehicle body, not only motorcycles (including motorized bicycles and scooter type vehicles), but also three-wheeled vehicles (one front wheel and two rear wheels). , including vehicles with two front wheels and one rear wheel) or vehicles with four wheels (such as four-wheel buggies). Moreover, it may be applied to a vehicle including an electric motor as a prime mover.
The configuration in the above embodiment is an example of the present invention, and various modifications such as replacing the constituent elements of the embodiment with known constituent elements are possible without departing from the gist of the present invention.

1 Motorcycle (saddle type vehicle)
5 rear wheel 5a axle 6 body frame 6a connecting portion 7 head pipe 9 pivot frame 10A main frame portion 10B rear frame portion 11 seat frame 12 subframe 15 connecting member 15a inner plate member (plate member)
15b outer plate member (plate member)
15k Outer surface 15x Connection between members 23 Swing arm 24 Seat 26 Passenger step 29 Shock absorber 29a Upper end S1 Closed space (space)

Claims (7)

A main frame portion (10A) extending from a head pipe (7) supporting a front wheel suspension to a pivot frame (9) supporting a rear wheel suspension, and a rear frame portion (10B) extending rearward from the main frame portion (10A). ) and
In the vehicle body rear structure for a straddle-type vehicle, wherein a shock absorber (29) is provided between the rear frame portion (10B) and the swing arm (23) of the rear wheel suspension,
The rear frame portion (10B) includes a seat frame (11) extending rearward from the main frame portion (10A), and extending rearward from the main frame portion (10A) below the seat frame (11). a sub-frame (12) that approaches the seat frame (11) as much as possible and connects the rear end (12a) to the seat frame (11); and a connecting member (15) connecting between the seat frame (11) and the sub-frame (12),
A body rear portion structure for a straddle-type vehicle, wherein an upper end portion (29a) of the shock absorber (29) is supported by the connecting member (15). A closed space (S1) in a side view of the vehicle is formed by the connecting member (15) and portions of the seat frame (11) and the sub-frame (12) located behind the connecting member (15). 2. The rear body structure of a saddle-riding type vehicle according to claim 1, wherein: A passenger step (26) is supported by the subframe (12), and the connecting member (15) is arranged behind the passenger step (26). 3. A vehicle body rear structure for a straddle-type vehicle according to item 1 or 2. The connecting member (15) supports the upper end (29a) of the shock absorber (29) on the outside in the vehicle width direction, and the outer surface (15k) of the connecting member (15) extends from the subframe (12). 4. The rear body structure for a saddle-riding type vehicle according to claim 1, wherein the rear portion of the vehicle body for a saddle-riding type vehicle according to any one of claims 1 to 3 is arranged on the outer side in the vehicle width direction. The connecting member (15) comprises a pair of plate-like members (15a, 15b) sandwiching the seat frame (11) and the sub-frame (12) in the vehicle width direction. 5. The vehicle body rear structure for a saddle-riding type vehicle according to any one of items 4 to 5. 6. The straddle-type vehicle according to claim 5, wherein the connecting member (15) includes an inter-member connecting portion (15x) that connects the pair of plate-like members (15a, 15b). Rear body structure. 7. The vehicle body rear structure for a saddle-ride type vehicle according to claim 6, wherein the inter-member connecting portion (15x) is provided on the vehicle front side of the connecting member (15).

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