JP2022157400A - Saddle-riding type vehicle - Google Patents

Abstract

To provide a saddle-riding type vehicle having a structure in which a position of a rear grip in a height direction is restricted.SOLUTION: A saddle-riding type vehicle has a main frame, a pair of left and right seat frames extending rearward from the main frame, and a rear grip connected to the pair of left and right seat frames and capable of being gripped by an occupant. The rear grip is fastened below rear portions of the seat frames.SELECTED DRAWING: Figure 5

Description

The present invention relates to a straddle-type vehicle.

A straddle-type vehicle is known that has a structure in which a rear grip is fastened from above at an end of a seat rail (for example, Patent Document 1).

JP 2014-034313 A

In the vehicle structure of recent straddle-type vehicles, from the viewpoint of manufacturing cost reduction, etc., there is a demand for commonality of parts such as body frames between different vehicle types. When a vehicle body frame is shared among vehicle models, if a seat rail whose rear end is positioned higher than the ideal is used, it is desired to make the rear of the vehicle look lower in order to approach the ideal. In the conventional structure in which the rear grip is fastened to the rear end of the seat rail from above, the position of the rear grip in the height direction is higher than the seat, and the position behind the vehicle creates a high appearance. turn into. Therefore, a structure that suppresses the position of the rear grip in the height direction is desired.

In addition, irrespective of the commonality of parts, it is also a problem to easily make the rear of the vehicle look low without changing the position of the seat rails, which are the main parts of the vehicle.

In view of the above problems, the present invention provides a saddle-ride type vehicle in which a vehicle body frame can be shared between different vehicle types, or a saddle-ride type vehicle in which the appearance of the rear of the vehicle can be easily changed. A straddle-type vehicle having a structure in which the position of a rear grip in the height direction is suppressed.

A straddle-type vehicle according to a first aspect of the present invention comprises a main frame (12),
a pair of left and right seat frames (15) extending rearward from the main frame (12);
A straddle-type vehicle (1) having a rear grip (9) connected to the pair of left and right seat frames (15) and capable of being gripped by an occupant,
The rear grip (9) is fastened below the rear part (202) of the seat frame (15).

In a second aspect of the present invention, in the first aspect, the rear portion (202) is formed with a protruding portion (302) protruding downward,
The rear grip (9) is fastened below the rear part (202) through the protrusion (302).

Further, in the third aspect of the present invention, in the second aspect, openings through which the protrusions (302) protrude are provided below the rear portions (202) of the pair of left and right seat frames (15). A cross member (303) having (304) and connecting the pair of left and right seat frames (15) is provided.

Further, according to a fourth aspect of the present invention, in the third aspect, the seat catch portion (400) for holding the seat (4) mounted on the pair of left and right seat frames (15) is provided with the cross member (303). has been concluded.

Further, according to a fifth aspect of the present invention, in the fourth aspect, in a state in which the seat (4) is held by the seat catch portion (400), the lower surface of the seat (4) is the pair of left and right sheets. It is located below the upper surface of the frame (15).

According to the first aspect, it is possible to provide a straddle-type vehicle having a structure in which the position of the rear grip in the height direction is suppressed.

Further, according to the second aspect, by forming the collar reinforcing member behind the seat frame, the rear grip is directly connected to the seat frame, compared to the case where the rear grip and the seat frame are connected via an intermediate member. Since it can be fastened, it is possible to reduce the number of parts.

Further, according to the third aspect, by providing the cross member, it is possible to reinforce the collar member, reduce the stress generated in the collar member when the rear grip is fastened, and at the same time, reduce the tension between the left and right seat frames. Rigidity can be improved.

Further, according to the fourth aspect, by arranging the seat catch on the cross member, a separate member for arranging the seat catch is not required, and the number of parts can be reduced, thereby reducing costs.

Further, according to the fifth aspect, when the seat is closed, the lower surface of the seat can be brought sufficiently close to the catch portion, so that the seat can be held by the seat catch portion. In addition, compared to the conventional structure in which the lower surface of the seat is positioned above the seat frame, the lower surface of the seat can be brought sufficiently close to the catch portion when the seat is closed. As a result, the seat lock portion that extends downward from the bottom surface of the seat can be made shorter than the seat lock portion in the conventional structure, making it possible to reduce the weight of the vehicle, reduce the materials used for parts, and reduce costs. .

1 is a left side view of a straddle-type vehicle according to an embodiment of the present invention; FIG. The figure which shows the structure of a seat frame. FIG. 3 is an enlarged upper perspective view of the A portion of the seat frame shown in FIG. 2; FIG. 3 is an enlarged bottom perspective view of the A portion of the seat frame shown in FIG. 2 ; The figure which shows the rear grip fastened below the rear-end part of a seat frame. FIG. 2 is a plan view schematically showing a state in which the seat is mounted on the seat frame;

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. It should be noted that the following embodiments do not limit the invention according to the claims, and not all combinations of features described in the embodiments are essential to the invention. Two or more of the features described in the embodiments may be combined arbitrarily. Also, the same or similar configurations are denoted by the same reference numerals, and redundant explanations are omitted.

In each figure, the X direction indicates the longitudinal direction of the vehicle 1 , the Y direction indicates the width direction of the vehicle 1 , and the Z direction indicates the vertical direction of the vehicle 1 . In this specification, terms such as front/rear, left/right (lateral), and up/down indicate relative positional relationships with respect to the vehicle body. For example, expressions such as front and front correspond to the +X direction, and expressions such as rear and rear indicate the positional relationship corresponding to the -X direction. Further, for example, expressions such as left and left indicate a positional relationship corresponding to the +Y direction, and expressions such as right and right indicate a positional relationship corresponding to the −Y direction. Similarly, expressions such as up/up indicate a positional relationship corresponding to the +Z direction, and expressions such as down/down indicate a positional relationship corresponding to the -Z direction.

<Overview of straddle-type vehicle>
FIG. 1 is a left side view of a straddle-type vehicle 1 according to one embodiment of the present invention. The straddle-type vehicle 1 is an off-road motorcycle, but the present invention is applicable to various straddle-type vehicles including other types of motorcycles. In addition, it can also be applied to an electric vehicle using a motor as a drive source. The straddle-type vehicle 1 may be referred to as the vehicle 1 hereinafter.

The vehicle 1 includes a head pipe 11 provided at the front of the vehicle, a pair of left and right main frames 12 , a down frame 13 , a pair of left and right lower frames 14 , a seat frame 15 , and a rear frame 16 . The head pipe 11 and the down frame 13 are provided as one piece along the center of the vehicle body. The vehicle body frame of the vehicle 1 (first vehicle model) is a vehicle body frame that can be used in common among different vehicle models. The vehicle body frame is formed so that it can be used in common with a vehicle type (for example, a second vehicle type, a third vehicle type, etc.) different from the first vehicle type of the vehicle 1 .

The combination of body frames that can be used in common between different vehicle types is not limited to the above. 12 and the seat frame 15, some frames may be shared.

A main frame 12, a down frame 13, and a lower frame 14 are connected in a loop, and the power unit 2 is arranged inside an area surrounded by them. Power unit 2 includes an engine and a transmission. An exhaust pipe 6 that guides engine exhaust to an exhaust muffler 5 is provided at the front of the power unit 2 .

The main frame 12 is attached to the upper portion of the head pipe 11, has left and right separated portions, and is curved left and right above the power unit 2 and extends obliquely downward and rearward. The down frame 13 is attached to the lower part of the head pipe 11, extends linearly and obliquely from the center of the vehicle body in front of the power unit 2, and is connected to the front ends of a pair of left and right lower frames 14 at its lower end. Each of the pair of left and right lower frames 14 curves downward from the lower front side of the power unit 2 and extends rearward in a substantially straight line. there is

A fuel tank 3 supported by a main frame 12 is arranged above the power unit 2 . A seat 4 on which a rider sits is arranged just behind the fuel tank 3 . The seat 4 is supported on a pair of left and right seat frames 15 . The pair of left and right seat frames 15 are attached to the pair of left and right main frames 12 at their respective front end portions 201 and extend rearward of the vehicle 1 . A pair of left and right rear frames 16 are connected to the seat frame 15 and the main frame 12 . The rear of the seat frame 15 supports a rear fender 60 that prevents mud, rainwater, and the like from splashing up on the rear wheel RW.

A rear grip 9 that can be gripped by a fellow passenger (passenger) is arranged behind the seat 4 . The rear grip 9 is for stabilizing the seating posture of a fellow passenger (occupant) by gripping the rear grip 9 when the fellow passenger gets on behind the seat 4 . It is

A steering stem 20 is rotatably supported on the head pipe 11 , and a top bridge 21 is attached to the upper end of the steering stem 20 . A bottom bridge 23 is provided at the lower end of the steering stem 20 .

A pair of left and right front forks 22 are supported in fork insertion holes (not shown) at the left and right ends of the top bridge 21 . A pair of front forks 22 are also supported by a bottom bridge 23 . A front wheel FW is rotatably supported by the lower ends of a pair of front forks 22 , and a handlebar 24 for steering the front wheel FW is attached to the top bridge 21 .

A front end portion of a rear swing arm 19 is swingably supported by a pivot shaft 121 on the main frame 12 . A rear wheel RW is rotatably supported at the rear end of the rear swing arm 19, and a chain (not shown) is wound around a drive sprocket (not shown) of the power unit 2 and a driven sprocket (not shown) of the rear wheel RW. The rear wheel RW is driven to rotate.

An extending portion 17 is provided so as to extend forward from the head pipe 11, and the extending portion 17 supports the meter panel MP. The meter panel MP displays various information such as vehicle speed, engine speed, and other vehicle conditions.

A front cowl 7 is provided so as to cover the meter panel MP, the front fork 22 and the like from the front to the sides. Furthermore, left and right bar winkers (direction indicators) 34 are provided so as to protrude outward in the vehicle width direction from the sides of the meter panel MP.

A handle grip 241 that is gripped by the rider is provided at each of the left and right ends of the handle bar 24 . Further, the handlebar 24 is provided with a brake lever, a clutch lever, and the like (not shown) adjacent to the left and right handle grips 241 . Left and right guard portions 25 for protecting the hands of the rider are supported in front of the handlebar 24 . The left and right guard portions 25 are arranged to cover the front portions of the left and right handle grips 241 .

Left and right mirror units 26 are provided on the handlebar 24 . Each mirror unit 26 includes a mirror stay (mirror support) 261 connected to the handlebar 24 and a mirror housing 262 . The mirror housing 262 is attached to the mirror stay 261 so that its orientation can be adjusted. The mirror housing 262 is a hollow body with an opening on the rear side, and a side mirror (mirror surface portion) is attached to the mirror housing 262 so as to close the opening. The rider can visually recognize the left and right rear through the side mirrors.

<Fastening structure of rear grip 9>
Next, a fastening structure for fastening the rear grip 9 to the lower surfaces of the rear end portions of the pair of left and right seat frames 15 in the straddle-type vehicle 1 of the present embodiment will be described. FIG. 2 is a diagram showing the structure of the seat frame 15. As shown in FIG. 3 is an enlarged upper perspective view of the A portion of the seat frame shown in FIG. 2. FIG. 4 is an enlarged bottom perspective view of the A portion of the seat frame 15 shown in FIG. 2, and FIG.

As shown in FIG. 2 , the pair of left and right seat frames 15 are attached to the pair of left and right main frames 12 at their respective front end portions 201 and extend rearward of the vehicle 1 . Further, as shown in FIGS. 2 and 3, a collar member 301 having a projecting portion 302 projecting downward is formed on the rear portion 202 of the seat frame 15 .

The upper surface 203 of the rear portion 202 of the seat frame 15 is formed flat, and the flange portion 306 of the collar member 301 is fixed to the seat frame 15 in contact with the upper surface 203 . The fixing method is, for example, to form a through hole in the rear portion 202 of the seat frame 15 through which the projecting portion 302 of the collar member 301 is inserted, and fix the flange portion 306 by welding or the like while the projecting portion 302 is inserted into the through hole. The collar member 301 can be secured to the seat frame 15 by techniques.

The example of FIG. 4 described below exemplifies a structure in which the collar member 301 is fixed to the seat frame 15 by welding. It is also possible to form the collar member 301 integrally with the seat frame 15 by forming the projecting portion 302 and the flange portion 306 by cutting.

The collar member 301 has a hollow structure in which a through hole penetrating from the flange portion 306 to the projecting portion 302 is formed. A screw portion is formed on the fastening surface 91 ( FIG. 5 ) of the rear grip 9 at a position corresponding to the projecting portion 302 . A fastening member such as a bolt inserted from the flange portion 306 side of the collar member 301 is engaged with the screw portion of the rear grip 9 while the end surface of the projecting portion 302 and the fastening surface 91 of the rear grip 9 are in contact with each other. , the rear grip 9 is fastened below the rear portion 202 of the pair of left and right seat frames 15 . By forming the collar member 301 on the rear portion 202 of the seat frame 15 as shown in FIGS. Since it can be directly fastened to the frame 15, it is possible to reduce the number of parts.

As shown in FIG. 4 , a cross member 303 is provided on the lower surface of the rear portion 202 of each of the pair of left and right seat frames 15 . The cross member 303 has an opening 304 through which the projecting portion 302 of the collar member 301 protrudes, and connects the pair of left and right seat frames 15 . By providing the cross member 303, it is possible to reinforce the collar member 301, reduce the stress generated in the collar member 301 when the rear grip is fastened, and at the same time improve the rigidity between the left and right seat frames. .

The projecting portion 302 of the collar member 301 has a different projecting length for each vehicle type. For example, in the first vehicle type, the projecting length of the projecting portion 302 is L1, in the second vehicle type, the projecting length of the projecting portion 302 is L2, in the third vehicle model, the projecting length of the projecting portion 302 is L3, etc. The projecting portion 302 of the collar member 301 can be formed with a different projecting length for each vehicle type. By making the protruding portion 302 of the collar member 301 have a different protruding length for each vehicle type, the position of the rear grip 9 in the height direction is adjusted and the height of the rear grip 9 is set to a predetermined height in a common vehicle body frame. height can be adjusted. As a result, it is possible to reduce the manufacturing cost by standardizing large parts such as the vehicle body frame. The position can be adjusted for each vehicle type.

FIG. 6 is a plan view schematically showing a state in which the seat 4 is mounted on the seat frame 15. As shown in FIG. A seat 4 on which an occupant sits has a seat lock portion 42 extending downward from a lower surface 41 of the seat 4 . The seat lock portion 42 has an opening in the vehicle width direction (Y direction).

The cross member 303 has an opening 305 through which the seat lock portion 42 can be inserted. A seat catch portion 400 for holding the seat 4 attached to the pair of left and right seat frames 15 is arranged on the lower surface 307 of the cross member 303 . By arranging the seat catch portion 400 on the lower surface 307 of the cross member 303, a separate member for arranging the seat catch portion 400 becomes unnecessary, and the cost can be reduced by reducing the number of parts.

With the seat 4 mounted on the seat frame 15 , the seat lock portion 42 inserted through the opening 305 formed in the cross member 303 is inserted into the recess 402 of the seat catch portion 400 . The seat catch portion 400 has an engaging portion 401 that is slidable in the vehicle width direction (Y direction) in conjunction with the operation of a key cylinder (not shown) or the like. The seat 4 is fixed to the seat frame 15 (vehicle frame) by the engagement portion 401 of the seat catch portion 400 sliding in the +Y direction and being engaged with the opening of the seat lock portion 42 (locked state). FIG. 6 shows the locked state. Further, the engagement with the opening of the seat lock portion 42 is released by sliding the engaging portion 401 in the -Y direction in conjunction with the operation of a key cylinder (not shown) or the like. .

As shown in FIG. 6 , when the seat 4 is held by the seat catch portion 400 , the lower surface 41 of the seat 4 is positioned below the upper surfaces of the pair of left and right seat frames 15 . By arranging the seat 4 and the seat frame 15 in such a configuration, the lower surface of the seat 4 can sufficiently approach the seat catch portion 400 when the seat 4 is closed. It becomes possible to hold.

The invention is not limited to the above embodiments, and various modifications and changes are possible within the scope of the invention.

1: vehicle (straddle-type vehicle), 4: seat, 9: rear grip,
11: head pipe, 12: main frame, 13: down frame,
14: lower frame, 15: seat frame, 16: rear frame,
301: collar member, 302: protrusion, 303: cross member, 305: opening, 306: flange, 400: seat catch

Claims (5)

a mainframe (12);
a pair of left and right seat frames (15) extending rearward from the main frame (12);
A straddle-type vehicle (1) having a rear grip (9) connected to the pair of left and right seat frames (15) and capable of being gripped by an occupant,
A straddle-type vehicle, wherein the rear grip (9) is fastened below the rear portion (202) of the seat frame (15). The rear part (202) is formed with a protrusion (302) protruding downward,
The straddle-type vehicle according to claim 1, wherein the rear grip (9) is fastened below the rear portion (202) via the projecting portion (302). Below the rear part (202) of each of the pair of left and right seat frames (15), there is an opening (304) through which the protrusion (302) protrudes, and the pair of left and right seat frames (15) is provided with an opening (304). Straddle-type vehicle according to claim 2, characterized in that a connecting cross member (303) is provided. The saddle according to claim 3, characterized in that a seat catch (400) holding the seat (4) mounted on the pair of left and right seat frames (15) is fastened to the cross member (303). riding vehicle. The seat (4) is held by the seat catch (400), and the lower surface of the seat (4) is positioned below the upper surfaces of the pair of left and right seat frames (15). The straddle-type vehicle according to claim 4.

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