KR20010094978A - Motorcycle - Google Patents

Abstract

PURPOSE: To further reduce the size of a motorcycle body of by reducing width of the body while providing a storage box and suppressing length of the body even when adopting a large rear wheel. CONSTITUTION: A storage box 9 having an opening part 9b opened and closed by a seat 10 is positioned at an upper part of front sub frames 3a and 4a and is overlapped with the front sub frames 3a and 4a in a plane view. A pivot plate 17 extends downward at a position overlapped with the storage box 9 in the plane view. Thus, the width of the car body is reduced and the body can be slim. Further, an internal combustion engine 19 and rear forks 21 and 22 can be positioned forward to a body frame F along a cross direction. Especially, the internal combustion engine 19 is positioned in front of the pivot plate 17 overlapped with the storage box 9 in the plane view. Therefore, the length of the car body can be suppressed even when a large rear wheel 18 is adopted.

Description

Two-wheeled vehicle {Motorcycle}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-wheeled vehicle such as an rider type having a storage box having an opening that receives and stores an article such as a helmet and is opened and closed by a seat. Specifically, the present invention relates to a mutual arrangement structure of a body frame and a storage box. It is about.

BACKGROUND ART A conventional two-wheeled vehicle having a storage box for storing articles such as a helmet is well known. For example, in a scooter-type vehicle (hereinafter referred to as the former) disclosed in Japanese Patent No. 2952799, a helmet or the like is provided in the rear upper cover. The luggage box which accommodates this is provided, and the opening part is opened and closed by a sheet | seat. Then, in the left and right sides of the luggage box, a pair of left and right rear frames that are part of the body frame is connected to the rear upper direction. Therefore, the width (left and right width) of the vehicle body in the part where the storage box is located becomes larger than the case where only the storage box is provided because there are both rear frames, and it is difficult to make the vehicle body slim, i.e., reduce the left and right width of the vehicle body. did.

On the other hand, in the two-wheeled vehicle disclosed in Japanese Patent Laid-Open No. 6-33058 (hereinafter referred to as the latter), a container for storing luggage is provided in a storage space formed between the center portion of the vehicle body cover and a pair of left and right frame members. It is arrange | positioned above the standing part of the said frame member, and a power unit is arrange | positioned below the said standing part. And since the opening of this container covered by the opening-closing lid body provided in the center part of the said vehicle body cover has the opening width substantially equal to the left and right width of the said frame member, a vehicle body does not protrude too much and it has no influence on riding The opening can be enlarged without.

Therefore, in the latter, unlike the former, the frame member (corresponding to the former rear frame) does not pass through the side of the container (corresponding to the former luggage box), so that the vehicle body expands in the left and right directions on the side of the container, that is, The left and right widths of the vehicle body do not become wider, and the body body can be said to be slimmer.

However, in the latter case, since the container is placed in front of each other, and the power unit is disposed in front of the rear part, when the rear wheel of large diameter is adopted, the length (front and rear length) of the vehicle body becomes long, There was room for improvement on the compact screen.

This invention is made | formed in view of such a situation, In a two-wheeled vehicle, while a storage box is provided, even if a left and right width of a vehicle body is made small, and a rear wheel of large diameter is employ | adopted, it is suppressed that the front-back length of a vehicle body becomes long. This aims at further compacting the vehicle body.

1 is a left side view of an A-seung motor vehicle which is an embodiment of the present invention;

FIG. 2 is a plan view of main parts of the motorcycle of FIG. 1; FIG.

3 is a rear view of the main body of the body frame, the storage box and the pivot plate of the motorcycle of FIG.

4 is an enlarged view illustrating main parts of the vehicle body frame, the storage box, and the pivot plate of FIG. 1;

5 is an enlarged view illustrating main parts centering on a vehicle body frame, a storage box, and a pivot plate of FIG.

FIG. 6 is an enlarged view illustrating main parts of the attachment stay of FIG. 2; FIG.

<Explanation of symbols for main parts of drawing>

One … Head pipe 2... Main frame

3, 4... Subframes 3a, 4a... Front subframe

3a2, 4a2... Horizontal portions 3a21, 4a21... 1st fastening part

3b, 4b... Lower bends 3c, 4c... Rear subframe

3c1, 4c1... Granular part 3c3, 4c3... Width expansion

5... Front cross pipe 6... Central cross pipe

7. Rear cross pipe 8. Body cover

9. Storage box 9b... Opening

10... Sheet 11. Steering shaft

12... Upper bridge 13. Lower bridge

14. All fork 15…. Steering wheel

16. Front wheel 17. Pivot plate

17b. Second pivot support 18... Rear wheel

19. Internal combustion engine 20. Transmission case

21, 22... Rear fork 23, 24... Rear suspension

25…. Air cleaner 26. carburetor

27. Intake duct 28. vent pipe

29. Muffler 30. Output shaft

31. Drive sprocket 32. Driven sprocket

33. Drive chain 34. Gigi Stay

35, 36... Attachment stay 37.. Fuel tank

38. Battery storage room 39. Lid

40…. Battery 41. Pivot axis

42. Main stand 43. Pivot axis

44. Brake pedal 45. Stopper shaft

46, 47... Pivot axis 48. Rear hanger

49. Front hanger 50... Pivot axis

51. CDI unit 52... regulator

53. Attachment stay 54.. step

V… Motorbike F… Body frame

P… Power unit B1, B2, B3... Rubber bush

W1, W2, W3, W4... Left and right width

The invention according to claim 1 of the present invention provides a vehicle body frame having a main frame extending rearward obliquely downward from the head pipe and a pair of left and right subframes extending rearward from the rear of the main frame, and an engine disposed in front of the pivot plate; And a rear fork pivotally supported on the pivot plate to support the rear wheels, wherein each of the left and right subframes includes a front subframe having a front end connected to the rear of the main frame and a front subframe. A storage box having a rear subframe having a bent portion bent upward from the rear end and a granular portion extending rearward obliquely upward from the rear end of the bent portion, the storage box having an opening opening and closing by a sheet, above the left and right front subframes. Position of the left and right when viewed in a plane It is superimposed on a front subframe, and the pivot plate is fixed to the left and right subframes, and is a motorcycle, characterized in that it continues downward in a position overlapping with the storage box in plan view.

In the invention described in claim 2, in the two-wheeled vehicle according to claim 1, the pivot plate is fixed to the front left and right front subframes, and the outer left and right widths of the fastening portion to which the pivot plate is fixed in the front left and right front subframes are It is the minimum width of the outer left and right width of the left and right front sub-frames in the part which overlaps with the said storage box in plan view.

In the invention according to claim 3, in the two-wheeled vehicle according to claim 1 or 2, the left and right rear subframes have an inner left and right width that is larger than the inside left and right widths of the front and rear subframes on the left and right sides. The fuel tank is disposed between the width enlarged portions on the left and right sides, each having a width enlarged portion to be formed.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 6.

Referring to FIG. 1, which is a left side view of the seated type motorcycle V, to which the present invention is applied, and FIG. 2, which is a plan view of the main portion thereof, the vehicle body frame F includes a head pipe 1 located at a front end portion, and a head pipe ( The tubular single main frame 2 of substantially the same outer diameter leading to the rear obliquely downward from the lower part of 1) becomes a shape which diverges from the left and right both sides of the rear part of the main frame 2, and each of the left and right pairs which are connected to the rear approximately The tubular subframes 3 and 4 of the same outer diameter are provided.

In addition, in this specification, "front, rear, left, and right" shall mean the front, back, left, and right of the motorcycle V.

Each subframe 3, 4 consists of a front subframe 3a, 4a, a lower bend 3b, 4b, and a rear subframe 3c, 4c, of which the front subframe 3a, 4a is the main subframe. Inclined portions 3a1 and 4a1 leading from the front end welded to the rear portion of the frame 2 to the rear obliquely downward along the main frame 2 and horizontal portions extending substantially horizontally rearward from the rear ends of the inclined portions 3a1 and 4a1. It consists of (3a2, 4a2). The lower bent portions 3b and 4b are bent upward from the rear ends of the horizontal portions 3a2 and 4a2, and the rear subframes 3c and 4c are formed from the rear ends (also the upper ends) of the lower bent portions 3b and 4b. The granular portions 3c1 and 4c1 extending in a straight line on the rear oblique upper side, and the upper curved portions 3c2 and 4c2 that are bent backward in the horizontal direction from the rear end (which is also the upper end) of the granular portions 3c1 and 4c1; From the rear ends of the upper bent portions 3c2 and 4c2, the wider portions 3c3 and 4c3 extend from the rear side obliquely upward to a slope that is gentler than that of the granular portions 3c1 and 4c1. As a result, the overall shapes of the front subframes 3a and 4a, the lower bent portions 3b and 4b and the granular portions 3c1 and 4c1 are substantially L-shaped.

The vehicle body frame F is also located between the left and right subframes 3, 4, and has three cross pipes in which the left and right ends are welded to both subframes 3, 4. These cross pipes are the front cross pipe 5 provided in the position which is also connected to the rear end of the main frame 2 in inclination parts 3a1 and 4a1 from the front side, and the center provided in the substantially center of the standing parts 3c1 and 4c1. It consists of a cross pipe 6 and the back cross pipe 7 provided in the rear end part of width expansion part 3c3, 4c3.

And the vehicle body frame F is covered by the vehicle body cover 8. The cover part which covers the subframes 3 and 4 among the vehicle body covers 8 forms the opening part 8a opened upwards above the left and right subframes 3 and 4, and the said cover part A storage box 9 for storing articles such as a helmet is disposed in the interior thereof. Since the opening part 8a is covered to be opened and closed by the seat 10 pivotally supported by the pivot support part 9a provided in the upper front end part of the storage box 9, it opens toward the upper side of the storage box 9. The opened opening 9b is also covered with the opening 8a of the vehicle body cover 8 so as to be openable and closed by the seat 10. In addition, the seat 10 is locked or opened by a known seat lock mechanism having a hook (not shown) that engages with the hoop 10a provided on the lower surface of the rear end of the seat 10.

Moreover, the upper bridge 12 is attached to the upper end part, and the lower bridge 13 is fixed to the lower end part to the steering shaft 11 rotatably supported by the head pipe 1, respectively. In addition, a steering wheel 15 is coupled to the upper end of the pair of all forks 14 and 14 coupled to the upper bridge 12 and the lower bridge 13, and the front wheel 16 is connected to the lower end thereof. Is axially supported.

In addition, a pivot plate 17 fixed to both front subframes 3a and 4a is installed downward from the front subframes 3a and 4a, and a power unit P and a rear wheel ( A pair of left and right rear forks 21 and 22 supporting the shaft 18 is supported. That is, the rear end part of the transmission case 20 integrally formed with the crankcase 19a of the internal combustion engine 19 as an engine is pivotally supported by the 1st pivot support part 17a of the pivot plate 17, and the power unit P A transmission (not shown) in the internal combustion engine 19 and the transmission case 20 constituting the above extends forward from the first pivot support 17a. Further, each front end portion of the left and right rear forks 21, 22 is pivotally supported by the second pivot support portion 17b of the pivot plate 17, and the rear ends of both rear forks 21, 22 carry the rear wheels 18. At the same time, it is supported by a pair of left and right rear suspensions 23 and 24 pivotally supported by brackets welded to the left and right upper bent portions 3c2 and 4c2. Therefore, the rear wheel 18 can rock in the up-down direction centering on the 2nd pivot support part 17b.

The internal combustion engine 19 is a spark-ignition type 4 in which a cylinder 19b, a cylinder head 19c, and a cylinder head cover (not shown), in which a piston (not shown) is slidably fitted, fit in the crankcase 19a. The air blown through the air cleaner 25 fixed to the main frame 2 is mixed with the fuel through the vaporizer 26, and the mixer is formed through the intake pipe 27. It is supplied to a combustion chamber via the intake port and intake valve provided in 19c). The exhaust gas after combustion is discharged from the muffler 29 into the atmosphere through the exhaust pipe 28 via an exhaust valve and an exhaust port provided in the cylinder head 19c.

The power of the internal combustion engine 19 consists of a drive sprocket 31 which rotates integrally with the output shaft 30 of the transmission and a drive chain 33 spanning the driven sprocket 32 which rotates integrally with the axle of the rear wheel 18. It is transmitted to the rear wheel 18 via the vehicle deceleration mechanism. In addition, this secondary deceleration mechanism also constitutes a part of power unit P. FIG.

3 to 5 together, the main frame 2, the left and right sub-frames 3 and 4, the storage box 9, the pivot plate 17 and the fuel tank 37 and the mutual arrangement of the center Explain.

The storage box 9 is disposed above both front subframes 3a and 4a, and in front of both standing portions 3c1 and 4c1, and is disposed on the left and right subframes 3 and 4 in the form described below. It is fixed. That is, the left and right ones are supported on the support stays 34 in which the substantially flat bottom wall 9c of the storage box 9 is disposed over the upper portions of the horizontal portions 3a2 and 4a2 of the left and right front subframes 3a and 4a. It is bolted through the pair of rubber bushes B1 and B1. This support stay 34 is formed with the flat plate welded to the horizontal part 3a2, 4a2 of the left and right edge part.

1 and 3, the rear wall 9d of the storage box 9 has a left wall portion extending along the granular portions 3c1 and 4c1 in front of both granular portions 3c1 and 4c1. 9d1 and the right wall part 9d2, the left and right attachment ends 9d11 and 9d21 formed in each upper part of the said left wall part 9d1 and the right wall part 9d2, respectively, on the upper part of the upper bent part 3c2 and 4c2, respectively. The left and right paired welding stays 35 and 36 are fastened by bolts through the pair of rubber bushes B2 and B2 together with the fuel tank 37 described later.

4 and 5, the storage box 9 has a rear portion and horizontal portions 3a2 and 4a2 of the inclined portions 3a1 and 4a1 of the left and right front subframes 3a and 4a in plan view. And overlapping with all of the left and right lower bent portions 3b and 4b, and in both front subframes 3a and 4a, the portion overlapping with the storage box 9 is in the maximum left and right direction of the storage box 9. It has a width, ie, the outer left and right width W2 smaller than the maximum left and right width W1. In particular, the outer left and right widths W2 of the horizontal portions 3a2 and 4a2 are slightly smaller than the left and right widths W4 of the bottom wall 9c of the storage box 9.

1, 3 and 4, the rear wall 9d of the storage box 9 is also located between the left wall portion 9d1 and the right wall portion 9d2, and at the same time, the left and right granular portions 3c1 and 4c1. ) And a central wall portion 9d3 located between the left and right upper bent portions 3c2 and 4c2. The upper part of the said center wall part 9d3 is formed above the center cross pipe 6, and forms the granular part which protruded rearward between the upper bend parts 3c2 and 4c2, and the battery accommodating chamber 38 is made by this granular part. Is formed.

That is, the bottom wall 38a of the battery storage chamber 38 is composed of the end portion 9d31 of the central wall portion 9d3, and the front wall of the bottom wall 38a is disposed between the side walls 38b and 38c of the battery storage chamber 38. At the same time, a front wall 38d is formed which extends upward from the bottom wall 38a and partially covers the opening toward the front of the battery storage chamber 38 from below. Further, immediately below the bottom wall 38a, the front end of the rear wheel 18 is located (see FIG. 2), and the front end of the bottom wall 38a and the foremost end of the rear wheel 18 become approximately the same position in the front-rear direction.

In addition, the lid 39 covering the openings that are opened forward and upward above the front wall 38d in the battery storage chamber 38 is formed of a plate-shaped member whose cross section in the front-back direction is substantially L-shaped, and the lid ( The lower end of the front part of the front part 39 is pivotally supported by the pivot support part 38a1 formed in the position slightly ahead of the front wall at the front end of the bottom wall 38a. The rear end of the upper part of the lid 39 is fitted to the slit 38e1 formed in the rear wall 38e of the battery storage chamber 38, and is coupled, and the coupling claw is released from the slit 38e1 by elastic deformation. ) 39a is provided, and opening of the lid 39 is prevented by the engagement of the engaging claw 39a and the slit 38e1. In this state, the battery 40 is prevented from moving forward and backward by the front wall 38d and the rear wall 38e, and the movement of the left and right is prevented by the left and right side walls 38b and 38c. The lid 39 prevents its movement up and down.

Since the battery storage chamber 38 was formed inside the storage box 9 in this way, the anti-theft effect of the battery 40 was large, and when the battery 40 was replaced, the lid 39 was opened and the battery storage chamber was opened. By opening the front and the upper part of the 38, the battery 40 can be easily removed and attached.

On the other hand, the pivot plate 17 made of a plate is disposed over the left and right front subframes 3a and 4a, and the left and right pairs of side portions 17c and 17d have an inner left and right widths of the horizontal portions 3a2 and 4a2. The upper ends of the respective side portions 17c and 17d are fixed to the horizontal portions 3a2 and 4a2 and the inclined portions 3a1 and 4a1 by welding, respectively, at a distance substantially equal to the width W3. The rear part 17e of this pivot plate 17 is located between both horizontal parts 3a2 and 4a2 at the rear end of each side part 17c and 17d. And this rear part 17e is formed by joining by welding the rear part formed by the board | substrate which forms each side part 17c, 17d bent at substantially right angle.

Each side portion 17c, 17d having an approximately L shape when viewed from the side from the left and right direction is composed of the vertical lower portions 17c1, 17d1 and the horizontal portions 17c2, 17d2. The vertical lower portions 17c1 and 17d1 extend downwards longer than the horizontal portions 17c2 and 17d2 immediately below the bottom wall 9c of the storage box 9, that is, at a position overlapping with the bottom wall 9c in plan view. The horizontal portions 17c2 and 17d2 extend from the first fixing portions 3a21 and 4a21 described later to the front ends of the inclined portions 3a1 and 4a1 along the front subframes 3a and 4a. And the rear part of these horizontal parts 17c2 and 17d2 overlaps with the bottom wall 9c just under the bottom wall 9c of the storage box 9, ie, planar view similarly to the vertical lower parts 17c1 and 17d1. Losing position continues downward. In addition, the portion where the pivot plate 17 is fixed in the front subframes 3a and 4a is the first fixation in the substantially center portion in the front-rear direction of the horizontal portions 3a2 and 4a2 to which the upper ends of the vertical lower portions 17c1 and 17d1 are fixed. Second fixing portions 3a11 and 4a11 to which the upper ends of all of the rear hangers 48 described later of the horizontal portions 17c2 and 17d2 are fixed at the portions 3a21 and 4a21 and the inclined portions 3a1 and 4a1. The upper end of the rear part of the hanger 48 is the 3rd fixing part 3a12 and 4a12 which are fixed.

A second pivot support portion having a pivot axis 41 fixed to both vertical lower portions 17c1 and 17d1 at an approximately center position thereof in the up and down direction and extending in the left and right directions to pivotally support the front ends of the left and right rear forks 21 and 22. A stopper shaft 45 of the pivot shaft 43 and the brake pedal 44 (see FIG. 2), which is provided with a 17b, and pivotally supports the main stand 42 at the lower ends of both vertical lower portions 17c1 and 17d1. ) Is fixed to each other, and is also located between the second pivot support 17b, the pivot shaft 41 and the stopper shaft 45, so that the pivot shaft 46 passes through the front end portions of the vertical lower portions 17c1 and 17d1. The first pivot support 17a is provided. Therefore, the 2nd pivot support part 17b is located directly under the bottom wall 9c of the storage box 9, and is installed in the position which overlaps with the bottom wall 9c of the storage box 9 in plan view, Moreover, it is located ahead of the granular parts 3a1 and 4c1. Therefore, the storage box 9 is arrange | positioned immediately above the horizontal parts 3a2 and 4a2, and the both vertical lower parts 17c1 and 17d1 and the 2nd pivot support part 17b are arrange | positioned directly under it. Even when the large diameter rear wheel 18 is adopted, the length of the vehicle body in the front-rear direction, that is, the length of the front-rear length can be suppressed.

In addition, the front end portions of the horizontal portions 17c2 and 17d2 of the pivot plate 17 extend in the left-right direction, and the rear hanger through which the pivot shaft 47 for pivotally supporting the upper part of the crankcase 19a of the internal combustion engine 19 is inserted. 48 is formed. In addition, the upper portion of the cylinder 19b extending obliquely upward from the crankcase 19a is pivotally supported by the pivot shaft 50 inserted into the front hanger 49 welded to the main frame 2. The power unit P, which includes the internal combustion engine 19 and the transmission, is supported by the vehicle body frame F by the front hanger 49, the rear hanger 48, and the vertical lower portions 17c1 and 17d1.

By the way, as shown in FIG. 5, the outer left and right widths W2 of the horizontal portions 3a2 and 4a2 overlapping with the storage box 9 in plan view are substantially parallel to each other, and the front and rear directions thereof are further described. As mentioned above, it is slightly smaller than the left and right width W4 of the bottom wall 9c of the storage box 9, and becomes the minimum left and right width in the part which overlaps with the storage box 9. As shown in FIG. Therefore, since the pivot plate 17 is fixed to both horizontal portions 3a2 and 4a2 having a minimum left and right width, the relatively narrow left and right by directly fixing the pivot plate 17 to both front subframes 3a and 4a. The width of the pivot plate 17 can be obtained, and the required rigidity can be secured while allowing the vehicle body to be lighter.

1 and 2, the inner left and right widths of the left and right subframes 3 and 4 pass from the lower bent portions 3b and 4b to the upper bent portions 3c2 and 4c2 through the granular portions 3c1 and 4c1. It becomes larger over and becomes the maximum left and right width at the rear end of the upper bends 3c2 and 4c2, and the width enlarged parts 3c3 and 4c3 of the rear subframes 3c and 4c that follow the rear ends of the upper bends 3c2 and 4c2. The inner left and right widths of the front subframes 3a and 4a are larger than the inner left and right widths W3 of the front subframes 3a and 4a. ) Is arranged. Therefore, the left and right width expanding parts 3c3 and 4c3 are arrange | positioned at the left and right side of the fuel tank 37, respectively. Then, the fuel tank 37 is attached to the front left and right pairs of attachment flanges 37a and 37b together with the attachment ends 9d11 and 9d21 (see FIG. 5) of the storage box 9 as described above. Coupled to the stays 35 and 36, the rear attachment flanges 37c and 37d are fastened by bolts through rubber bushes B3 and B3 to the upper ends of the rear end portions 3c3 and 4c3. Is fixed to the subframes 3 and 4 of.

Moreover, the internal combustion engine 19 is equipped with the capacitive discharge type ignition apparatus (CDI), As a component part, the CDI unit 51 which accommodates a capacitor | condenser, a charge / discharge control circuit, etc., and the regulator which rectifies an AC voltage are shown. 4 and 6, the front 52 of the storage box 9 is attached to the attached stay 53 welded to the upper part of the main frame 2, respectively. In this way, parts can be arrange | positioned using the space formed in front of the storage box 9 effectively.

As shown in Figs. 1 and 2, the step 54 is approximately the center of the crank shaft 19d and the front and rear directions of the output shaft 30 and located slightly below both axes, near the front end of the storage box 9; And substantially vertically below the inclined portions 3a1 and 4a1 of the front subframes 3a and 4a. In this vicinity, the outer left and right widths W2 of the front subframes 3a and 4a are approximately the minimum left and right widths, and are smaller than the maximum left and right width W1 of the storage box 9, so that the storage box 9 is provided. Nevertheless, the driver can raise the foot to step 54 without having to greatly spread his leg.

Next, the operation and effect of the embodiment configured as described above will be described.

The storage box 9 is located above the left and right front subframes 3a and 4a, and furthermore, since it is in a position overlapping with the left and right front subframes 3a and 4a in plan view, both front subframes 3a. , 4a does not protrude laterally larger than the storage box 9, and therefore the vehicle body cover 8 does not greatly expand on the left and right sides of the storage box 9. In addition, the vertical lower parts 17c1 and 17d1 of the pivot plate 17 are in a position overlapping with the storage box 9 in a plan view, and the internal combustion engine 19 is disposed in front of the vertical lower parts 17c1 and 17d1. At the same time, the rear forks 21 and 22 are second pivot supports of the vertical lower portions 17c1 and 17d1 of the pivot plate 17 at positions ahead of the standing portions 3c1 and 4c1 of the left and right subframes 3 and 4. Since it is pivotally supported by (17b), the position of the front-back direction of the rear fork 21, 22 with respect to the vehicle body frame F can be positioned ahead of the prior art, and especially the internal combustion engine 19 is a storage box 9 ) Is disposed in front of the vertical lower portions 17c1 and 17d1 in the overlapping position in plan view, so that even when a large diameter rear wheel 18 is employed, the length of the front and rear of the vehicle body can be suppressed. In this embodiment, the foremost length of the rear wheels 18 can be the front and rear lengths of the vehicle body located at the front end of the bottom wall of the battery storage chamber 38 formed on the rear wall 9d of the storage chamber.

As a result, the motorcycle has a storage box 9 having an opening 9b which is opened and closed by the seat 10, while the left and right widths of the vehicle body become smaller, and the vehicle body can be made slimmer. ), It is possible to suppress the length of the front and rear of the vehicle body to be longer, it is possible to further compact the vehicle body. Therefore, it is possible to employ the large diameter rear wheels 18 while suppressing the length of the front and rear lengths of the vehicle body, thereby improving the running performance.

The pivot plate 17 has a minimum width at the outside of the left and right front subframes 3a and 4a at a portion where the storage box 9 overlaps the left and right front subframes 3a and 4a in a plan view. Since they are fixed to the first to third fixing portions 3a21, 4a21, 3a11, 4a11, 3a12 and 4a12 of the horizontal portions 3a2 and 4a2 and the inclined portions 3a1 and 4a1, these fixing portions 3a21, 4a21 and 3a11. 4a11, 3a12, 4a12 can be made into a relatively narrow left and right pivot plate 17 to fit the left and right width, the large left and right wide pivot plate and the right and left width connected to both sub-frames (3, 4) It is not necessary to use a pivot plate that is attached to the cross member. As a result, the required rigidity can be secured while enabling the weight of the vehicle body to be reduced.

Since the fuel tank 37 is disposed between the width expanding portions 3c3 and 4c3 of the left and right rear subframes 3c and 4c, the vehicle height behind the vehicle body can be kept low and the subframes 3 and 4 ), Since the left and right widths of the width expansion sections 3c3 and 4c3 are large, a sufficient capacity of the fuel tank 37 can be ensured. As a result, the vehicle height at the rear of the vehicle body can be lowered while ensuring a sufficient capacity of the fuel tank 37, which can contribute to the compactness of the vehicle body.

The pivot plate 17 is provided with first and second pivot supports 17b and 17b, a pivot shaft 43 of the main stand 42, a stopper shaft 45 of the brake pedal 44 and a rear hanger 48. Therefore, the arrangement of each pivot shaft can be made compact, and the number of plates supporting the pivot shafts can be reduced, thereby contributing to weight reduction. In addition, since the pivot plate 17 is formed of a plate, further weight reduction is possible.

The rear hanger 48 and the first pivot support 17a of the front hanger 49 with the internal combustion engine 19 and the transmission fixed to the main frame 2 and the pivot plate 17 fixed to the subframes 3, 4. Since the vehicle body frame F is supported by the vehicle body frame F, the power unit P is shared and supported by the main frame 2 connected to the subframes 3 and 4 and the head pipe 1. As a result, the power unit P can be positioned in front of the vehicle body, and the front and rear lengths of the vehicle body can be suppressed from being longer, and the main frame 2 can be restrained from being longer from the front and rear of the vehicle body. Compared with supporting the power unit P, the strength and rigidity of the main frame 2 can be reduced, and the weight of the vehicle body can be reduced.

In the above embodiment, the rear hanger 48 is integrally formed on the pivot plate 17, but the rear hanger 48 may be provided separately from the pivot plate. In addition, although the motorcycle V was a riding type, it may be a scooter type.

According to the invention as set forth in claim 1, the storage box having an opening to be opened and closed by the seat is located above the left and right front subframes and at the position overlapping with the left and right front subframes in plan view. The front subframe does not protrude laterally larger than the storage box. Since the pivot plate on which the engine is disposed in front and the rear fork pivotally supporting the rear wheels is fixed to the left and right subframes and continues downward from the position overlapping with the storage box in plan view, The front and rear positions of the engine and the rear fork relative to the frame can be positioned in front of the prior art, and in particular, the engine is disposed in front of the pivot plate at a position overlapped with the storage box in plan view, so that a large diameter Even when the rear wheels are employed, the length of the front and rear of the vehicle body can be suppressed.

As a result, the motorcycle has a storage box having an opening that is opened and closed by a seat, and the left and right widths of the vehicle body become smaller, thereby making the vehicle body slim, and even when the rear wheel of a large diameter is adopted, the front and rear lengths of the vehicle body are long. It can suppress losing, and it is possible to make a vehicle body more compact. Therefore, it becomes possible to employ | adopt a large diameter rear wheel, restraining lengthening of the front-back length of a vehicle body, and can improve running property.

According to the invention of claim 2, since the pivot plate is fixed to a portion where the outer left and right widths of the left and right front subframes become the minimum width, the pivot plate can be made into a relatively narrow left and right width pivot plate that is matched to the left and right widths of the fastening portion, and thus the left and right widths. It is not necessary to use this large pivot plate or a pivot plate fixed to the cross members having large left and right widths connected to both subframes. As a result, in addition to the effect of the invention described in claim 1, it is possible to secure the required rigidity while enabling the weight reduction of the vehicle.

According to the invention as set forth in claim 3, the fuel tank is disposed between the width expanding portions of the left and right rear subframes, so that the vehicle height at the rear of the vehicle body can be kept low, and the left and right widths of the width expanding portion are large between the subframes. As a result, a sufficient capacity of the fuel tank can be ensured.

As a result, in addition to the effect of the invention according to claim 1 or 2, a sufficient capacity of the fuel tank can be ensured, and the height of the vehicle at the rear of the vehicle body can be lowered, thereby contributing to the compactness of the vehicle body.

Claims (3)

A body frame having a main frame extending rearward obliquely downward from the head pipe and a pair of left and right subframes extending rearwardly from the rear of the mainframe, an engine disposed in front of the pivot plate, and a rear wheel pivotally supported on the pivot plate In the motorcycle having a rear fork for supporting the shaft, Each of the left and right subframes has a front subframe in which a front end is connected to a rear part of the main frame, a bent portion that is bent upward from a rear end of the front subframe, and a granular portion that extends rearward obliquely upward from a rear end of the bent portion. A storage box having a rear subframe having an upper part, the storage box having an opening opened and closed by a sheet, positioned above the left and right front subframes, overlapping with the left and right front subframes when viewed in a plan view; Pivot plate is fixed to the left and right sub-frame, the motorcycle is characterized in that it continues downward at the position overlapping with the storage box in a plan view. According to claim 1, wherein the pivot plate is fixed to the left and right front subframe, the outer left and right width of the fixing portion to which the pivot plate is fixed in the left and right front subframe overlap the storage box in plan view. A motorcycle, characterized in that it is approximately the minimum width of the outer left and right widths of the left and right front subframes at the losing portion. The said left and right rear subframe of Claim 1 or 2 each has the width expansion part which forms an inner left and right width larger than the inside left and right width of the said left and right front subframes behind the said right and left standing part, A motorcycle according to claim 1, wherein a fuel tank is disposed between the left and right wide portions.