JP2023032191A - 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 enables steps for a passenger and guide members to be attached easily.SOLUTION: A vehicle body rear part structure of a saddle-riding type vehicle includes: steps 26 for a passenger on which a rear passenger places its feet; step frames 14 each of which supports the step 26 for the passenger on a vehicle body frame; and guard members each of which is disposed at the rear relative to the step frame 14 and guards clothing of the rear passenger so as to prevent the clothing from contacting with a rear wheel 5. The step frame 14 includes a step bracket 38 which is integrally formed and supports both of the step 26 for the passenger and the guard member.SELECTED DRAWING: Figure 4

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, there is a saddle type vehicle in which a guard member is arranged on one side of a rear wheel to guard the clothing of a fellow passenger from coming into contact with the rear wheel (see, for example, Patent Document 1). For example, the front portion of the guard member is supported by the step frame along with the steps for the rear passenger.
The step frame is made of, for example, a pipe material arranged in a V shape projecting rearward when viewed from the side of the vehicle. A mounting portion is provided to which the front portion of the guard member is mounted.

JP 2015-174455 A

If, for example, the step frame is made of a pipe material as in the conventional technique, it becomes difficult to attach both the passenger step and the guard member to the step frame. For this reason, if measures such as providing a separate mounting portion are taken, problems may arise in terms of mounting accuracy and support strength.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle body rear structure for a saddle-riding type vehicle to which a passenger step and a guard member can be easily attached.

As means for solving the above problems, the invention described in claim 1 provides a passenger step (26) on which a rear passenger puts his or her feet, and a step of supporting the passenger step (26) on a vehicle body frame (6). A saddle-ride type vehicle comprising a frame (14) and a guard member (16) disposed behind the step frame (14) and guarding a rear passenger's clothing from touching a rear wheel (5). 1, wherein the step frame (14) includes a step bracket (38) that supports both the passenger step (26) and the guard member (16).
According to this configuration, since the step frame includes the step bracket that supports both the passenger step and the guard member, the passenger step and the guard member can be easily attached to the step frame, and the mounting accuracy and Support strength can be secured.

In the second aspect of the invention, the step frame (14) includes frame members (34, 35) fixed to the body frame (6) at base ends (34b, 35b) in the extending direction; and the step bracket (38) fixed to the extremities (34a, 35a) of the frame members (34, 35) in the extending direction, wherein the step bracket (38) is attached to the frame member (34, 35). and a bracket tip (38e) extending rearward of the bracket base (38c), and the guard member (16) is supported by the bracket tip (38e). It is characterized by
According to this configuration, it is possible to support the guard member at a position as close as possible to the front end portion of the step bracket on the rear side, so that the support rigidity of the guard member can be increased. "Fixing" used in claim 2 includes both welding and fastening.

The invention as defined in claim 3 is characterized in that the passenger step (26) is supported by the bracket base (38c).
According to this configuration, the guard member can be supported on the rear side of the passenger step. In addition, it is possible to easily disperse the loads acting from the passenger step and the guard member.

In the fourth aspect of the invention, the bracket base (38c) supports the passenger step (26) in a foldable manner via a pivot shaft (52), and the bracket tip (38e) , extending in the axial direction of the pivot shaft (52) from the bracket base (38c).
According to this configuration, the front end portion of the bracket extends to avoid the folding direction of the passenger step, so that interference between the front end portion of the bracket and the step for passenger can be avoided.

According to the fifth aspect of the invention, the frame members (34, 35) are made of pipe material, and the pipe material is formed into flat plates at the ends (34a, 35a) of the frame member (35) in the extending direction. It is characterized in that flat plate portions (35c) crushed into a shape are connected, and the guard member (16) is supported by the flat plate portions (35c) and the bracket tip portion (38e).
According to this configuration, the guard member can be firmly supported by the flat plate portion of the frame member and the tip portion of the bracket in the step frame.

According to the sixth aspect of the present invention, the step bracket (38) is formed such that the bracket tip portion (38e) is located outside the bracket base portion (38c) in the vehicle width direction. do.
According to this configuration, the distance between the flat plate portion of the frame member and the tip portion of the bracket in the step frame can be increased. As a result, the support rigidity (especially torsional rigidity) of the step frame can be increased, and the guard member can be firmly supported.

In the seventh aspect of the invention, the guard member (16) has a collar member (55) extending in the vehicle width direction at a front end portion (42b) supported by the step frame (14), and the flat plate portion (35c), the guard member (16) is fixed to the step frame (14) by fastening bolts (56) passing through the step bracket (38) and the collar member (55). .
According to this configuration, the step frame and the guard member can be firmly connected by the fastening bolts passing through the step bracket and the flat plate portion while the collar member is sandwiched between the step bracket and the flat plate portion.

According to the present invention, by providing the step frame with the integrated step bracket that supports both the passenger step and the guard member, the passenger step and the guard member can be easily attached to the step frame, and the mounting accuracy is improved. and support strength can be ensured.

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 left side view of the passenger step, the guard member, and the periphery thereof; FIG. 4 is an enlarged view of a step bracket that supports both the passenger step and the guard member; It is a perspective view of the said step bracket periphery.

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 (not shown), a pair of left and right seat frames 11 , a pair of left and right subframes 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 extends downward from the rear end of the main frame. The pivot frame 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 and are coupled to the rear portion of the seat frame 11 .

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 clothes of the rear passenger 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.
The down frame 13 extends downward from the head pipe 7 and supports the power unit 4 together with the pivot frame.

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.

As shown in FIG. 2, the pair of left and right step frames 14 are attached to two step pipes (frame members) 34, 35 arranged in front and rear, respectively, and lower end portions 34a, 35a of the step pipes 34, 35. a step bracket 38; The two step pipes 34 and 35 are arranged with upper ends 34b and 35b spaced apart from each other in the front-rear direction, and the upper ends 34b and 35b are connected to the middle of the sub-frame 12, respectively. The upper ends 34b, 35b of the two step pipes 34, 35 are fixed in the middle of the subframe 12 by welding, but they may be fixed by bolting or the like instead of welding. The two step pipes 34, 35 are arranged such that their respective lower ends 34a, 35a abut or approach each other in the front-rear direction. A space S1 surrounded by the subframe 12 and the two step pipes 34 and 35 has a triangular shape when viewed from the side of the vehicle. The step frame 14 is not limited to being composed of two pipe members, and may be provided with a reinforcing member such as a gusset member or a cast member.

A step bracket 38 is attached to the lower ends 34a, 35a of the two step pipes 34, 35 by welding. The lower ends 34a and 35a of the two step pipes 34 and 35 may also be welded together. The step bracket 38 may be fixed to the lower ends 34a, 35a of the two step pipes 34, 35 by bolting or the like.
A base plate 51 that supports the passenger step 26 is attached by welding to the outer surface of the step bracket 38 in the vehicle width direction.

The guard member 16 includes a dress guard portion 41 that guards the clothes of the fellow passenger from touching the rear wheel 5 when the fellow passenger sits sideways on the passenger seat portion 24b (see FIG. 1), and the feet of the fellow passenger. and a footrest 42 on which the
The dress guard portion 41 is formed along the side surface of the vehicle (a plane orthogonal to the vehicle width direction) and arranged on the side of the rear wheel 5 . The dress guard section 41 includes a main guard frame 41a, a sub-guard frame 41b, and a plurality of linear members 41c.

The main guard frame 41a has a shallow V-shape that protrudes rearward when viewed from the side of the vehicle. A front end portion 41 d of the upper side of the main guard frame 41 a is attached to a connecting plate 43 coupled to the rear end portion 12 a of the sub-frame 12 . More specifically, the front end portion 41d of the main guard frame 41a is composed of a collar member extending in the vehicle width direction, and the front end portion 41d and the connecting plate 43 are connected by a fastening bolt 44 and a nut (not shown) passing through the connecting plate. 43. The lower side of the main guard frame 41a is shorter than the upper side, and the footrest portion 42 continues in front of the lower side.

The sub guard frame 41b has a V-shape that protrudes forward and upward when viewed from the side of the vehicle. The sub guard frame 41b has a first linear portion 41e extending in the front-rear direction on the upper side and a second linear portion 41f extending in the vertical direction on the front side. A rear end portion of the first straight portion 41e is coupled to the upper side of the main guard frame 41a. A lower end of the second straight portion 41f is coupled to the footrest portion 42 . A plurality of linear members 41c are provided between the footrest portion 42 and the main guard frame 41a.

The footrest portion 42 includes a main footrest frame 42a extending in the front-rear direction when viewed from the side of the vehicle. The rear end of the main footrest frame 42a is integrally connected to the lower end of the main guard frame 41a, and the front end 42b is supported by the lower end of the step frame 14. As shown in FIG. The main footrest frame 42a is formed such that the front-rear direction intermediate region is displaced outward in the vehicle width direction. A plurality of linear members 42c extending in the front-rear direction are provided inside the main footrest frame 42a. The main guard frame 41a and the main footrest frame 42a form an integrally molded guard frame 46. As shown in FIG.

<Step bracket>
As shown in FIGS. 3 and 4, the step pipes 34 and 35 are arranged in a V shape that protrudes rearward and downward when viewed from the side of the vehicle. Lower ends 34a and 35a of the step pipes 34 and 35 are arranged parallel to each other. A step bracket 38 is attached by welding to the outer surfaces of the lower ends 34a and 35a of the step pipes 34 and 35 in the vehicle width direction. The lower step pipe 34 is formed in a straight line that slopes backward when viewed from the side of the vehicle, and the upper step pipe 35 is bent above the lower end portion 35a so as to be substantially vertical when viewed from the side of the vehicle.

The step bracket 38 has a bracket base portion 38c, an inclined portion 38d and a bracket tip portion 38e.
The bracket base portion 38c has a rectangular shape in a side view so as to overlap the lower end portions 34a and 35a of the step pipes 34 and 35 from the outside in the vehicle width direction.
The inclined portion 38d extends rearwardly and downwardly from the lower end of the bracket base portion 38c so as to be positioned outward in the vehicle width direction toward the lower side.
The bracket tip portion 38e extends rearward and downward from the lower end of the inclined portion 38d in parallel with the bracket base portion 38c (in parallel with the side surface of the vehicle).

The step bracket 38 is formed to extend rearward and downward from the bracket base portion 38c as a whole. Reinforcing flanges 38b are formed on both sides of the step bracket 38 in the width direction perpendicular to the direction in which the step bracket 38 extends. .
The sloped portion 38d is formed in a trapezoidal shape that narrows in the width direction toward the lower rear side because the side edge on the front lower side slopes when viewed from the side of the vehicle. The bracket tip portion 38e is offset to the rear upper side in the width direction with respect to the bracket base portion 38c.

The longitudinal direction of the step bracket 38 is along the direction in which the lower ends 34a and 35a of the step pipes 34 and 35 extend (rearward downward direction).
The step bracket 38 is integrally formed by press molding a steel plate.

The inner surface of the bracket base portion 38c is welded to the outside of the lower end portions 34a and 35a of the step pipes 34 and 35 in the vehicle width direction. Reinforcing flanges 38b on both sides of the bracket base 38c may be welded to the lower ends 34a and 35a of the step pipes 34 and 35, respectively. A base plate 51 for supporting the passenger step 26 is joined to the flat outer surface of the bracket base portion 38c by, for example, welding.

As described above, the step bracket 38 extending in the longitudinal direction of the step pipes 34, 35 has a bracket base portion 38c, an inclined portion 38d, and a bracket tip portion 38e that are bent in the vehicle width direction and connected integrally. The rigidity of the step bracket 38 can be increased by forming a pair of reinforcing flanges 38b on the side edges on both sides. Thereby, the support rigidity for supporting the passenger step 26 and the guard member 16 in the step bracket 38 can be improved.

As shown in FIG. 4, the passenger step 26 includes a base plate 51 that is welded to the bracket base portion 38c of the step bracket 38, and a pivot shaft (support shaft) 52 that pivots on the base plate 51. and a supported step body 53 .
The base plate 51 includes a plate bottom portion 51a along the outer surface of the bracket base portion 38c, and a pair of plate side portions 51b that extend outward in the vehicle width direction from both ends of the step bracket 38 in the longitudinal direction of the plate bottom portion 51a. . The rotating shaft 52 is attached so as to pass through the pair of plate side portions 51 b of the base plate 51 .

The step body 53 includes a supported portion 53a disposed between the pair of plate side portions 51b and through which the rotating shaft 52 passes, and a footrest portion extending outward in the vehicle width direction from the supported portion 53a and covered with rubber or the like. 53b and . The step main body 53 shown in FIG. 4 is in a usable state in which it is maintained so as to extend substantially horizontally by a stopper (not shown). From this state, the step body 53 can be swung about 90 degrees in the direction of arrow A (that is, obliquely upward rearward when viewed from the side of the vehicle) to be in a folded state (that is, a retracted state).

The step pipe 35 on the upper side (the side where the bracket tip portion 38e is offset) has a flat plate portion 35c formed by flattening the step pipe 35 along the side surface of the vehicle, behind and below the lower end portion 35a. The flat plate portion 35c faces the bracket tip portion 38e in the vehicle width direction.

A front end portion 42b of the footrest portion 42 is composed of a collar member 55 extending in the vehicle width direction. That is, the footrest portion 42 has a collar member 55 extending in the vehicle width direction at its front end portion 42b. The collar member 55 is formed longer than the member outer diameter of the footrest portion 42 .
The collar member 55 is arranged between the step bracket 38 and the flat plate portion 35 c of the step pipe 35 . Specifically, the step bracket 38 and the flat plate portion 35c are connected to each other by a fastening bolt 56 passing through the step bracket 38, the collar member 55 and the flat plate portion 35c, and a nut 57 arranged inside the flat plate portion 35c in the vehicle width direction. It is fastened to the portion 35c.

As described above, the bracket tip 38e of the step bracket 38 protrudes outward in the vehicle width direction, thereby increasing the distance between the bracket tip 38e and the flat plate portion 35c. The collar member 55 is sandwiched between the two. As a result, the torsional moment generated in the main footrest frame 42a due to the downward load acting on the footrest 42 when the fellow passenger puts his/her foot on the footrest 42 can be supported with high torsional rigidity. Also, the connection between the step frame 14 and the main footrest frame 42a can be strengthened.

As described above, the vehicle body rear structure of the saddle-riding type vehicle in the above embodiment includes the passenger step 26 on which the rear passenger rests his or her feet, and the step frame 14 that supports the passenger step 26 on the vehicle body frame 6. and a guard member 16 disposed behind the step frame 14 and guarding the clothes of the rear passenger from touching the rear wheel 5, the step frame 14 being positioned between the passenger step 26 and the guard member 16. It has an integral step bracket 38 that supports both.
According to this configuration, the step frame 14 includes the step bracket 38 that supports both the passenger step 26 and the guard member 16, so that the passenger step 26 and the guard member 16 can be easily attached to the step frame 14. It is possible to secure mounting accuracy and supporting strength.

In the vehicle body rear structure of the straddle-type vehicle, the step frame 14 includes a pair of step pipes 34 and 35 fixed to the vehicle body frame 6 at their extending upper ends 34b and 35b, respectively. a step bracket 38 fixed to each lower end 34a, 35a of the step pipes 34, 35 in the extending direction; the step bracket 38 includes a bracket base 38c fixed to the pair of step pipes 34, 35; Since the guard member 16 is supported by the bracket tip portion 38e, the bracket tip portion 38e on the rear side of the step bracket 38 moves the guard member 16 as far as possible. can be supported at a position close to , and the support rigidity of the guard member 16 can be increased.

In addition, in the rear body structure of the saddle-riding type vehicle, since the passenger step 26 is supported by the bracket base portion 38c, the guard member 16 can be supported on the rear side of the passenger step 26. . In addition, the load acting from the passenger step 26 and the guard member 16 can be easily dispersed.

In the vehicle body rear structure of the straddle-type vehicle, the bracket base portion 38c supports the passenger step 26 in a foldable manner via the pivot shaft 52, and the bracket tip portion 38e rotates from the bracket base portion 38c. Since it extends in the axial direction of the shaft 52, the bracket tip portion 38e extends avoiding the direction in which the passenger step 26 is folded, so that interference between the passenger step 26 and the bracket tip portion 38e can be avoided.

In the vehicle body rear structure of the saddle type vehicle, the pair of step pipes 34 and 35 are each made of a pipe material, and the lower end portions 34a and 35a of one (upper) step pipe 35 in the extending direction are provided with pipes. The flat plate portion 35c formed by crushing the material into a flat plate shape is connected, and the guard member 16 is supported by the flat plate portion 35c and the bracket tip portion 38e. , the guard member 16 can be firmly supported.

Further, in the vehicle body rear structure of the straddle-type vehicle, the step bracket 38 is formed so that the bracket tip portion 38e is displaced further outward in the vehicle width direction than the bracket base portion 38c. The distance between the flat plate portion 35c and the bracket tip portion 38e can be increased. As a result, the support rigidity (especially torsional rigidity) of the step frame 14 can be increased, and the guard member 16 can be firmly supported.

In the vehicle body rear structure of the saddle-riding type vehicle, the guard member 16 has a collar member 55 extending in the vehicle width direction at the front end portion 42b supported by the step frame 14. The plate portion 35c, the step bracket 38 and the collar Since the guard member 16 is fixed to the step frame 14 by the fastening bolts 56 that pass through the member 55, the collar member 55 is held between the step bracket 38 and the flat plate portion 35c, and the step frame is secured by the fastening bolts 56 that pass through them. 14 and the guard member 16 can be firmly connected.

The present invention is not limited to the above embodiment. For example, the guard member 16 is attached to the flat plate portion 35c formed on the step pipe 35 and the step bracket 38. It may be provided separately.
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 6 body frame 14 step frame 16 guard member 26 passenger step 34, 35 step pipe (frame member)
34a, 35a lower end (tip)
34b, 35b upper end (base end)
35c flat plate portion 38 step bracket 38c bracket base portion 38e bracket tip portion 42b front end portion 52 rotation shaft 55 collar member 56 fastening bolt

Claims (7)

A passenger step (26) on which a rear passenger rests his or her feet, a step frame (14) for supporting the passenger step (26) on a vehicle body frame (6), and a rearward portion of the step frame (14). A rear vehicle body structure for a saddle-riding type vehicle comprising a guard member (16) arranged to guard a rear passenger's clothing from touching a rear wheel (5),
A body rear structure for a straddle-type vehicle, wherein the step frame (14) includes a step bracket (38) for supporting both the passenger step (26) and the guard member (16). . The step frame (14) includes frame members (34, 35) fixed to the vehicle body frame (6) at base ends (34b, 35b) in the extending direction, and extensions of the frame members (34, 35). The step bracket (38) fixed to the leading end (34a, 35a) in the exit direction,
The step bracket (38) includes a bracket base (38c) fixed to the frame members (34, 35) and a bracket tip (38e) extending rearward of the bracket base (38c),
2. The rear body structure for a straddle-type vehicle according to claim 1, wherein said guard member (16) is supported by said bracket tip portion (38e). 3. The rear body structure for a saddle-riding type vehicle according to claim 2, wherein said passenger step (26) is supported by said bracket base (38c). The bracket base (38c) supports the passenger step (26) in a foldable manner via a pivot shaft (52),
4. The rear portion of the vehicle body of the straddle-type vehicle according to claim 2, wherein the bracket tip portion (38e) extends from the bracket base portion (38c) in the axial direction of the pivot shaft (52). structure. The frame members (34, 35) are made of pipe material,
A flat plate portion (35c) formed by crushing the pipe member into a flat plate shape continues to the tip portions (34a, 35a) of the frame member (35) in the extending direction,
The straddle-type vehicle according to any one of claims 2 to 4, wherein the guard member (16) is supported by the flat plate portion (35c) and the bracket tip portion (38e). body rear structure. The saddle-riding according to claim 5, wherein the step bracket (38) is formed such that the bracket tip (38e) is located outside the bracket base (38c) in the vehicle width direction. rear body structure of a model vehicle. The guard member (16) has a collar member (55) extending in the vehicle width direction at a front end (42b) supported by the step frame (14),
The guard member (16) is fixed to the step frame (14) by fastening bolts (56) passing through the flat plate portion (35c), the step bracket (38) and the collar member (55). 7. The vehicle body rear structure for a straddle-type vehicle according to claim 5 or 6.

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