JP2009161027A - Motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To impart sufficient rigidity to a knee grip part, when gripping a shroud by knees, by covering its right-left with the shroud by arranging a storage box in front of a seat. <P>SOLUTION: The storage box 7 is arranged in front of the seat, and its right-left are covered with the shroud 33, and an upper part of the shroud 33 is gripped by the knees. The shroud 33 exhausts exhaust air of a radiator 13 from an exhaust air port 60 formed between the shroud 33 and a side cover 34 by arranging a side surface opening 66 in the center. The side surface opening 66 is covered with a separate side cover 34, and the shroud 33 enhances support rigidity of the shroud by being supported by a headlight stay, the storage box 7 and the radiator 13 being a rigid member by engaging projections 72A, 72B and 72C. Particularly, the sufficient rigidity is imparted to the knee grip part of the shroud 33 by supporting the shroud 33 by the storage box 7 by engaging with a side surface of the storage box 7 by the engaging projection 72B. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention realizes such a knee grip portion with a simpler vehicle body structure in a motorcycle in which a storage box is provided on the main frame between the handle and the seat and the side of the storage box is a knee grip portion. It relates to what you can do.

A two-wheeled motorcycle with a storage box open at the top between a pair of left and right mainframes extending rearward from the head pipe in front of the seat, covering the sides of the mainframe with the body cover, and supporting the body cover with the main frame Cars are known.
JP-A-1-12982

The front part of the seat in a motorcycle is a position where the driver seated on the seat knee-grips, and this part requires rigidity as a target member of the knee grip. The knee grip is used.
On the other hand, when the storage box is arranged in front of the seat as in the above-described known example, the vehicle body cover on the side of the storage box is knee gripped, and it is necessary to increase the rigidity of the vehicle body cover. However, when trying to support the cover with the main frame which is a rigid member inside the body cover, the main frame is placed in a high position overlapping the side of the storage box and the storage box is sandwiched from the left and right, and the layout of the main frame In addition, there was a restriction on the vehicle, and the center of gravity of the car body was raised.
Therefore, the present invention has an object to realize a knee grip that does not require such a complicated structure, facilitates the layout of the main frame, and lowers the center of gravity of the vehicle body.

In order to solve the above-mentioned problems, a motorcycle according to a first aspect of the present invention is characterized in that a head pipe that rotatably supports a handle is provided at a front end, and a main frame that extends obliquely downward and rearward from the head pipe; A storage box supported by the storage box, a seat disposed behind the storage box, an engine disposed below the storage box and below the main frame, and a radiator disposed in front of the engine. And motorcycles each side of the engine covered with a shroud,
The side of the storage box is covered with a part of the shroud to form a knee grip portion, and the shroud is supported to the side of the storage box.

  According to a second aspect of the present invention, in the first aspect, the shroud is made of resin, and includes a main body portion and a side cover that covers the side of the main body portion, and the main body portion has a side opening for allowing the exhaust air of the radiator to pass therethrough. And an opening rim that surrounds the side opening and is formed with reinforcing ribs, the side cover overlapping at least part of the rim of the opening, and a gap forming an air exhaust port between the side cover and the shroud. It is formed.

  According to a third aspect of the present invention, in the first aspect of the present invention, a plurality of attachment portions are provided on the lower rear side of the storage box so as to be separated from each other in the vehicle width direction and coupled to the main frame.

  According to a fourth aspect of the present invention, in the above second or third aspect, the shroud is supported by a headlight stay attached to the head pipe and supporting the headlight at the upper front, and supported by the storage box at the upper rear. The lower part is supported by the radiator.

According to a fifth aspect of the present invention, in the first aspect, a center cover attached to an upper portion of the shroud and provided with a box opening above the opening of the storage box is provided separately from the shroud, and the box opening is provided. The part is covered with a box lid cover so that it can be opened and closed.
A rectifying groove is formed by a joining portion of the center cover and the shroud.

According to a sixth aspect of the present invention, in the first aspect of the present invention, a mounting portion for the storage box of the shroud is provided in the knee grip portion.

According to the first aspect of the present invention, the storage box is supported above the main frame, the sides of the storage box are covered with the shroud, and the shroud is supported by the storage box, so that the shroud is supported by the rigidity of the storage box. Therefore, even if the shroud is knee-gripped, the necessary rigidity can be secured in the knee-grip portion. Therefore, the shroud can be knee gripped even if a rigid member such as a fuel tank or a main frame does not exist in the vicinity of the knee grip portion.
In addition, since the main frame can be arranged below the storage box, it is possible to simplify the structure by eliminating the complicated structure of sandwiching the storage box between the main frames, and the flexibility of the layout of the main frame is increased. The center of gravity can be lowered.

According to the invention of claim 2, by providing the shroud with the opening and providing the rib and the stepped portion, the weight can be reduced and the rigidity can be improved.
Further, since the side cover is attached to the shroud, the attachment rigidity can be increased even with the side cover, and the sink marks on the surface caused by the ribs can be covered, and the appearance can be improved.
In addition, since the warm exhaust air that has passed through the radiator passes through the opening of the shroud and is further smoothly discharged from the exhaust port formed by the gap at the joint portion between the side cover and the shroud, the cooling performance is improved.

  According to the invention of claim 3, by providing a plurality of main frame side mounting portions in the vehicle width direction that support the rear portion of the storage box, the rigidity on the rear portion side of the storage box that is pushed left and right by the knee during knee grip is improved. it can.

  According to the invention of claim 4, since the upper front part, upper rear part, and lower part of the shroud are respectively supported by the headlight stay, the storage box, and the radiator side which are rigid members, the mounting rigidity of the shroud can be improved. it can.

  According to the fifth aspect of the present invention, the box cover is provided in the center cover, and the box lid for opening and closing the box cover is attached to the center cover, thereby facilitating the attachment of the box lid and the front cover only by removing the center cover. Maintenance is improved because the turn signal can be maintained. In addition, a rectifying groove is formed at the mating portion of the center cover and the shroud, so that a rectifying effect can be obtained and the outer periphery of the box lid matches the mating portion of the center cover, so that the split surface at the edge of the box opening is conspicuous The appearance is improved.

According to the sixth aspect of the present invention, since the mounting portion of the shroud with respect to the storage box is provided in the knee grip portion, the rigidity of the knee grip portion can be enhanced by the support by the storage box.

  An embodiment will be described below with reference to the drawings. FIG. 1 is a side view of a motorcycle according to this embodiment. The front wheel 1 and the rear wheel 2 are supported by the body frame 3. The upper portions of the pair of left and right front forks 4 that support the front wheel 1 at the lower end are rotatably supported by a head pipe 5 provided at the front end portion of the vehicle body frame 3 and are steered by a handle 6 at the upper end of the front fork 4.

  A storage box 7 is supported on the body frame 3 behind the head pipe 5, a seat 8 is disposed behind the storage box 7, and a fuel tank 9 is disposed below the seat 8. The fuel tank 9 is supported on the seat rail 10, and the seat 8 is pivotally attached to the upper surface of the fuel tank 9 by a hinge. When the seat 8 is pivoted upward to open, the fueling cap 9a is exposed, The fuel tank 9 can be refueled. When the seat 8 is pivoted rearward and closed, the upper portion of the fuel tank 9 is covered. A grab rail 11 is disposed at the rear end of the seat 8 and is supported to the rear end of the seat rail 10.

  A water-cooled engine 12 is disposed at an intermediate portion between the front wheel 1 and the rear wheel 2 and is supported by the vehicle body frame 3. The engine 12 is cooled by a radiator 13 disposed in front of and obliquely above. The radiator 13 is disposed in the vicinity of the head pipe 5, behind the front wheel 1 and obliquely above, and supported below the vehicle body frame 3. The front of the cylinder 12a of the engine 12 is covered with a cylinder cover 12b. The cylinder 12a is provided to be tilted forward above the front portion of the crankcase 12c.

  The cylinder 12a of the engine 12 takes in air from an air cleaner 15 disposed below the fuel tank 9 via a rear carburetor 14, and is exhausted from an exhaust pipe 16 extending forward of the cylinder 12a. The exhaust pipe 16 extends from the front of the cylinder 12a to the lower side of the crankcase 12c, extends rearward, and is connected to a muffler 17 disposed on the side of the rear wheel 2. A heat tube 18 containing a catalyst is interposed in front of the muffler 17, and an upper portion thereof is covered with a guard wire 19.

The rear end of the rear swing arm 20 is pivotally mounted on the rear portion of the body frame 3 so as to be swingable up and down, and a rear cushion 21 is disposed between the middle portion and the seat rail 10 in the vertical direction. A rear wheel 2 is rotatably supported at the rear end of the rear swing arm 20.
The rear wheel 2 is provided with a driven sprocket 22 and is driven by a chain 24 spanned between drive sprockets 23.

Reference numeral 25 is a headlight, 26 is a front blinker, 27 is a screen, 28 is a meter, and 29 is a tail lamp.
The front blinkers 26 are arranged in a pair of left and right behind the headlight 25 and on both sides of the head pipe 5, and are supported by a headlight stay (described later) and a vehicle body cover.
The tail lamp 29 is disposed below the grab rail 11 and supported at the rear end of the seat rail 10.

  The headlight 25 is disposed in front of the head pipe 5 and supported by the head pipe 5. A screen 27 is provided above the headlight 25, and a headlight cover 30 is attached to the back side of the headlight 25 and the screen 27. The screen 27 and the headlight cover 30 constitute a front cowl that covers the periphery of the headlight as a part of the vehicle body cover. The front cowl and a vehicle body cover described later are made of resin.

  The vehicle body cover that covers the vehicle body behind the headlight 25 includes a handle cover 31 that covers the periphery of the handle 6 and the meter 28, an upper cowl 32 that covers the space between the front winker 26 below, the radiator 13, and the side of the storage box 7. A shroud 33 that also serves as a radiator shroud, a side cover 34 that detachably covers a side opening provided in the shroud 33, a box lid 35 that covers the storage box 7 so as to be openable and closable, and a box lid 35 are attached. A center cover 36 that covers the rear of the front winker 26 and between the upper cowl 32 and the shroud 33 and a rear cowl 37 that covers the left and right sides of the vehicle body on the rear side of the shroud 33 are provided.

  FIG. 2 is a side view of the vehicle body frame 3. The body frame 3 extends from the head pipe 5 on the front end side to the left and right while extending diagonally downward and extends backward, and a pair of left and right seat rails 10 welded to the rear end and extending diagonally upward and rearward. A pair of left and right center frames 41 that are further bent downward from the rear end of the main frame 40 and extend obliquely downward, and a pair of left and right rear members that obliquely connect the rear ends of the center frame 41 and the seat rail 10. It has a frame 42.

The main frame 40 is provided with a gusset 43 welded between the front end portion and the head pipe 5, stays 44 and 45, and an engine hanger 46 for supporting the engine.
The seat rail 10 is provided with a stay 47 that supports the fuel tank on the front side, and a stay 48 that supports the grab rail on the rear end.
The center frame 41 is provided with a pivot pipe 41 a for passing a pivot shaft (not shown) that pivotally attaches the front end of the seat rail 10.
An engine hanger 49 and the like are provided at the lower end of the rear frame 42.

FIG. 3 shows brackets (not shown in FIG. 2) provided at the front portion of the head pipe 5, and a headlight stay 50 protruding obliquely upward is provided at the lower front portion of the head pipe 5 and is inclined upward at the front end thereof. A vertical stay 51 that is inclined forward is supported.
At the upper end of the stay 51, the center of an aiming shaft 52, which is an angle adjusting shaft arranged horizontally in the vehicle width direction (left-right direction), is supported, both ends extend in the left-right direction, and brackets 53 are attached to the respective ends. ing. A headlight mounting nut 54 is provided on the extension of the aiming shaft 52. Reference numeral 55 denotes a nut for attaching a front blinker.

  A stay 56 extending obliquely forward and downward is provided on the lower front surface of the stay 51, and a lower end portion of the stay 51 supports the lower portion of the headlight so that the front and rear can be adjusted. An intermediate portion of the support wire 57 is supported on the lower end portion of the stay 51. The support wire 57 extends to the left and right, each distal end bends obliquely downward and rearward, and a bracket 58 is provided at the distal end. The bracket 58 is provided with a through hole 58a, and the front end portion of the shroud 33 is supported in an anti-vibration manner.

  Next, the shroud circumference will be described. FIG. 4 is an enlarged side view of the shroud 33 and its peripheral portion. The edge portion of the upper end portion 33a of the shroud 33 is connected to the front blinker 26 on the front side and the edge portions of the lower end portions of the center cover 36 on the rear side. The edge of the lower end portion on the rear side of the upper cowl 32 is aligned with the edge portion of the upper end portion of the center cover 36. The shroud 33, the center cover 36, and the like surround the storage box 7, and the appearance thereof is as if the tank cover of the fuel tank.

  The center cover 36 is provided with a box lid 35 that covers the upper portion of the opening of the storage box 7 and covers a box opening (described later) provided at the rear thereof so as to be freely opened and closed. The box lid 35 is provided with a lock handle 38 having a long shaft portion, and can be locked and unlocked by rotating the lock handle 38 around the axis. The box lid 35 is connected to the center cover 36 and a hinge shaft 89b via a hinge 89a, and the box lid 35 can be opened and closed by rotating the hinge 89a about the hinge shaft 89b.

  The rear end portion of the center cover 36 is fastened to the shroud 33 as will be described later, and the front portion and the middle portion of the lower end portion of the side face are obliquely rearward and upward with respect to the upper end portion of the shroud 33 at the engaging portions 36j and 36k. It is inserted and engaged. The enlarged portion in the drawing shows the engagement structure by the intermediate engaging portion 36k, and the engaging portion 36k projects obliquely downward from the lower end of the side surface of the center cover 36 and is formed at the upper end of the shroud 33. The center cover 36 is engaged and integrated with the shroud 33 by being inserted into the hole 33k obliquely from behind and upward. The same applies to the engaging portion 36j at the front end. In this case, when the fastening with the shroud 33 at the rear end portion is released, the center cover 36 is pulled out obliquely rearward and upward, whereby the engaging portions 36j and 36k are extracted from the engaging holes 33k to release the engagement. The cover 36 can be separated independently, and maintenance on the members inside the front turn signal 26 and the like becomes possible.

The rear upper part of the shroud 33 on the side of the storage box 7 is a portion where knee grip is performed by being pinched by the driver's knee N, and this knee grip portion G is in contact with the knee N as indicated by a virtual line. And extends from the upper rear side of the shroud 33 to the rear side surface of the center cover 36 adjacent thereto. Further, the rear upper portion of the side cover 34 is also attached to the knee grip portion G of the shroud 33 to form a part of the knee grip portion G.
As will be described later, the knee grip portion of the shroud 33 is attached to the side surface of the storage box 7 and supported by the storage box 7.

Between the rear end portion 34 c of the side cover 34 and the shroud 33, an air exhaust port 60 is opened in a side view as illustrated. The traveling wind W enters from the space between the front parts of the left and right shrouds 33, cools the radiator 13, flows backward inside the shroud 33, and flows from the exhaust outlet 60 continuous at the rear part of the side opening 66 of the shroud 33. The vehicle exits rearward and is guided through a stepped portion 61 having a concave groove shape by a step formed on the rear surface of the shroud 33 and flows rearward of the vehicle body.
Reference numeral 13 a in the figure is a cooling fan provided on the back surface of the radiator 13. 13b is a stay provided in the frame part in the side part of the radiator 13, and the lower part of the shroud 33 is supported here.

  FIG. 5 is a perspective view showing the shroud 33 in a small assembled state in which the side cover 34 and the center cover 36 are integrated from the front of the vehicle body, FIG. 6 is a view showing the shroud 33 in the same state from the front, and FIG. It is. In these drawings, the side cover 34 and the shroud 33 are integrated, and the outer surface in this integrated state forms a smooth rectifying curved surface so that the intermediate portion projects most outward in both the front-rear direction and the vertical direction. It is possible to reduce the running resistance by rectifying the running wind W.

  Further, the upper end portion 33a of the shroud 33 has a curved surface that is inclined so that the upper portion enters the inside of the vehicle body, and is connected to the lower end edge 36a of the center cover 36 (FIG. 6). The side surface of the center cover 36 forms a ridge line 36b that protrudes most outward of the vehicle body above the lower edge 36a, and forms an undercut slope 36c that enters the interior of the vehicle below the ridge line 36b. The undercut slope 36c and the upper end 33a A concave groove that enters the vehicle body is formed between the two (FIG. 6).

  As indicated by the phantom line V in FIG. 6, the concave groove has a substantially V shape in the lateral direction, extends in the front-rear direction, and forms an air guide path 62 that is open at the front and rear. (See 5.7) can be guided from the front of the vehicle body to the occupant side behind the center cover 36. Further, the air guide path 62 also has a rectifying effect on the traveling wind W by forming a curved surface with a smooth surface, so that traveling resistance can be reduced.

  Of the side surface of the center cover 36, a portion above the ridge line 36b forms an undercut slope 36c and a reverse slope 36d, and the upper side enters the vehicle body. The front portion of the center cover 36 is greatly opened forward, and its front edge 36e overlaps the rear outer edge of the front turn signal 26 and the rear lower edge portion of the upper cowl 32 (FIG. 4).

  A box opening 63 is formed in the rear wall 36 f of the center cover 36, and serves as an entry / exit port for articles to / from the storage box 7. The upper edge portion 36h of the rear wall 36f has a flange shape, and a part thereof protrudes upward to form a mounting portion 64 with the rear end portion of the upper cowl 32, on which the rear end portion of the upper cowl 32 is overlapped. Combined with a tapping screw.

As is apparent from FIG. 7, the opening edge 36g surrounding the box opening 63 forms a recess where the outer periphery of the box lid 35 overlaps, and the outer periphery of the box lid 35 is formed around the opening edge 36g. It is designed to be flush with the surface. Since the outer peripheral portion of the opening edge 36g coincides with the mating portion with the outer peripheral portion of the box lid 35, the split surface at the time of forming the opening edge 36g becomes inconspicuous and the appearance is improved.
A mounting portion 65 is provided at the rear end portion of the opening edge portion 36g, and this is overlapped with the upper end portion of the shroud 33, and is fastened with a tapping screw from an obliquely upper rear side, whereby the rear end portion of the center cover 36 is connected to the shroud 33. Can be attached detachably.

  An exhaust port 60 opened in the front-rear direction of the vehicle body is formed between the rear end portion 34 c of the side cover 34 and the shroud 33, and the exhaust port 60 is formed long on the rear side surface of the shroud 33 in the front-rear direction. The front end of the stepped portion 61 faces. The air exhaust port 60 is continuous with the side surface opening 66, and in the side view (FIG. 4), the air exhaust port 60 appears as a part of the rear portion of the side surface opening 66.

  8 is an assembly view of the shroud 33 and the side cover 34, and FIG. 9 is a perspective view of the state in which the left and right shrouds 33 are combined and integrated. In these drawings, a shroud 33 and a side cover 34 are provided as a pair on the left and right sides, and the left and right shrouds 33 abut against the rear wall 33b that wraps inwardly of the vehicle body at each rear end and is formed at each abutment 67. The protrusion 33c is overlapped on the inner side of the mating part 67, and the claw formed on a part of the protrusions 33c is provided in advance on the mating rear wall 33b corresponding thereto. It is united by engaging with 33d.

  A large side opening 66 is formed at the center of the shroud 33, and the side cover 34 is attached so as to cover the side opening 66 from the side. By covering the side opening 66 with the side cover 34, the side opening 66 communicates with an exhaust port 60 (FIG. 7) formed between the rear end portion 34 c of the side cover 34 and the shroud 33. The front side cover 34 is formed in an area slightly smaller than the side opening 66, and the rear end portion 34c of the side cover 34 does not completely cover the rear part of the side opening 66 in a side view, so that the air exhaust port 60 can be seen slightly. (FIG. 4).

Reference numeral 68 denotes a connecting portion to which the front end of the rear cowl 37 is attached. The front end of the rear cowl 37 is attached to the connecting portion so as to overlap below the front end portion of the seat 8, and is connected by a tapping screw (FIG. 1).
The front upper portion 33h of the shroud 33 projects forward at an acute angle. A mounting protrusion 70 protruding upward is integrally formed on the upper end portion 33a in the vicinity of the front upper portion 33h and in the vicinity of the front end portion of the side opening 66. The mounting protrusion 70 enters the center cover 36 and a boss 70a protruding outward is coupled and integrated with a stay provided at the rear portion of the front turn signal 26 (see FIGS. 4 and 6).

  FIG. 10 is a side view of the left shroud 33, that is, a view showing the outer surface side of the shroud 33. Side cover mounting portions 71B, 71C, 71D, and 71E are provided surrounding the side opening 66. The side opening 66 is surrounded by continuous opening edge portions 33e, 33f, and 33g, and the opening edge portion 33e is provided with a tongue-like attachment portion 71B and an attachment portion 71C provided on a long rectangular attachment protrusion 77, respectively. 66 projecting into 66. The opening edge portion 33f is also provided with a tongue-like attachment portion 71D protruding into the side opening 66. The attachment portion 71E is provided at the lowermost portion of the shroud 33. A mounting portion 71A is also provided at the tip of the front upper portion 33h that protrudes forward in an acute angle shape.

  An engagement protrusion 72A that engages with the bracket 58 (FIG. 3) on the headlight stay 50 side is provided in the vicinity of the attachment portion 71A and behind the front upper portion 33h. The attachment projection 77 is also provided with an engagement projection 72B that engages with the storage box. Further, an engagement protrusion 72C that engages with the radiator 13 is also provided in the vicinity of the attachment portion 71E.

  A plurality of ribs 70 b, 70 c, 70 d that form a straight line in a diagonally up and down direction are integrally formed on the mounting protrusion 70 so as to protrude to the inner surface (the inner surface of the vehicle body, hereinafter the same). The ribs 70b and 70c are formed parallel to the front and rear with the small opening 70e provided in the mounting protrusion 70 interposed therebetween, and reinforce the periphery of the small opening 70e. Further, on the rear side of the small opening 70e, ribs 70d parallel to the ribs 70c are formed with the boss 70a in front and back, and the ribs 70c and 70d extend to the lower mounting portion 71B to reinforce the mounting portion 71B portion. To do.

A front rib 73 extending downward from the attachment portion 71D to the attachment portion 71E is also formed long at the opening edge portion 33f of the side surface opening 66. The central front rib 73 is formed so as to protrude greatly inward of the vehicle body (see FIG. 6). A central rear rib 74 is formed in the rear of the central front rib 73 so as to face the central front rib 73. The central rear rib 74 extends from the rear side of the attachment portion 71E to the front end portion of the opening edge portion 33g.
Further, rear ribs 75 are formed on the rear side of the side openings 66 so as to project obliquely downward and extend rearward (see FIG. 6). The rear rib 75 reaches the mounting portion 76 protruding from the step portion 61 portion to the rear lower end edge 33i and reinforces it. The attachment portion 76 is attached to the stay 45 of the main frame 40 (FIG. 2).

The mounting protrusion 77 provided at the upper right corner of the side opening 66 also has a rib 78 at its front end and extends to the upper opening edge 33e, thereby reinforcing the mounting protrusion 77.
The attachment protrusion 77 is integrally provided with an attachment portion 71C and an engagement protrusion 72B, and is required to have relatively high rigidity. Further, a front end rib 79 reaching from the front end edge portion to the vicinity of the attachment portion 71D is provided at the front end portion 33j in the vicinity of the front upper portion 33h. The front end rib 79 protrudes outward substantially horizontally and forms a spacer that maintains a space opened forward between the front end portion 33j of the shroud 33 and the front end portion 34b of the side cover 34 (FIG. 6). ).

  Thus, by providing a large number of ribs on the peripheral edge of the side opening 66, the mounting portion, etc., the rigidity of the shroud 33 can be increased despite the relatively large side opening 66 and the like being provided, and the weight can be reduced. it can. In addition, the side cover 34 is attached from the outside to increase the rigidity of the shroud 33, and further supported from the inside by the storage box 7, so that the knee grip portion G supports the knee N (FIG. 4) with sufficient rigidity even during knee grip. It can be done.

Further, by providing a plurality of ribs such as the central front side rib 73 on the opening edge portions 33e, 33f, and 33g, the opening edge portions 33e, 33f, 33g, and the like cause sink marks due to shrinkage deformation after resin molding. By covering with the peripheral part of the side cover 34, it is prevented from being seen from outside, and both reinforcement and improvement in appearance are achieved. The mounting protrusion 77 is also covered with the side cover 34 at the portion where the rib 78 is formed. The mounting projection 70 is covered with the center cover 36 so that it is not visible.
The portion where the rear rib 75 is formed is not covered with a member such as the side cover 34, but since this portion is formed so as to cross the uneven portion of the step portion 61, sink marks with respect to the appearance surface become inconspicuous.

  11 is a side view of the side cover 34, and FIG. 12 is a front view thereof. As shown in FIG. 11, the periphery of the side cover 34 has an upper end 34 a that is long in the front-rear direction, a front end 34 b that is bent by bending the middle in the vertical direction, and a rear end that is bent by entering the front in the vertical direction. The portion 34c is substantially T-shaped. The central portion is narrower at the lower side, the lower end 34d is narrowest, and has a highly rigid structure in which the mounting portion 71E is sandwiched between the central front rib 73 and the central rear rib 74. The upper half part of the front end part 34b rises obliquely and extends forward to form a front upper part 34e projecting forward acutely between the upper end part 34a and overlaps the front upper part 33h (FIG. 10) of the shroud 33. The upper half part of the rear edge 34b also rises obliquely and extends rearward, and forms a rear upper part 34f that projects rearward at an acute angle with the rear part of the upper end part 34a that also bends the rear part and forms an oblique rearward fall. , And overlaps with the mounting projection 77 (FIG. 10) of the shroud 33.

  On the inner surface of the side cover 34, bosses 80A, 80B, 80C, 80D, and 80E are integrally protruded inwardly corresponding to the mounting portions 71A, 71B, 71C, 71D, and 71E of the shroud 33. The boss 80A is located at the front end of the front upper portion 34e. The boss 80B is located at the middle part in the front-rear direction of the upper end part 34a. The boss 80C is located at the rear end of the rear upper portion 34f. The boss 80D is located at the middle in the front-rear direction of the upper end 34a. The boss 80E is located in the vicinity of the lower end 34d. When the center cover 34 is attached to the shroud 33, the bosses 80A to 80E are provided at positions that contact the corresponding attachment portions 71A to 71E (FIG. 10), respectively.

  As shown in FIG. 12, the bosses 80A, 80B, 80C, 80D, and 80E project inwardly and are coupled to the corresponding attachment portions of the shroud 33. As shown in the enlarged portion, for example, the tip of the boss 80C is fitted in the recess 81 formed in the mounting portion 71C in advance, and the through hole 82 formed in the recess 81 and the through hole 83 on the boss 80C side are formed. In addition, the tapping screws 84 are put in and fastened together to be integrated. The other bosses are similarly attached. Note that the outer surface of the side cover 34 forms a smooth rectifying curved surface that is curved so that the intermediate portion projects most outward in both the front-rear direction and the vertical direction.

FIG. 13 is a cross-sectional view showing the mounting structure of the engaging protrusion 72A. A grommet 85 made of an elastic material such as rubber is previously mounted in the mounting hole 58a (see FIG. 3) of the bracket 58, and the tip of the grommet 85 is substantially arrow-shaped. By inserting the engaging projections 72A forming the above, vibration-proofing is easily and quickly attached. Moreover, since the bracket 58 is a rigid member supported by the headlight stay 50, the support rigidity of the front upper portion 33h where the engagement protrusion 72A of the shroud 33 is provided can be increased.
The lower engaging projection 72C has the same vibration-proof mounting structure and is vibration-proof attached by being inserted into the stay 13b of the radiator 13 which is a rigid member.

  FIG. 14 shows an attachment structure of the engagement protrusion 72B. The engagement protrusion 72B is an engagement protrusion 72B having a substantially arrow shape at the tip thereof to a grommet 88 previously attached to a hole 87 provided in the side surface 7a of the storage box 7. Is inserted into the side surface 7a of the storage box 7 in a simple and quick manner so that the shroud 33 and the storage box 7 are integrated. In addition, since the storage box 7 is a rigid member, it is possible to increase the support rigidity of the shroud 33 with respect to the central upper portion where the engagement protrusion 72B is provided, and the rigidity of the portion that forms the knee grip portion G (FIG. 4) of the shroud 33. Can be increased by support by the storage box 7.

  FIG. 15 is a top view of the storage box 7. The storage box 7 is divided into left and right halves 7L and 7R across a dividing line 90, and the halves 7L and 7R are combined with a boss 91 and a rib 92 facing each other on the dividing line 90 and integrated by a tapping screw 93. The In this way, the left and right halves 7L and 7R are aligned to form an opening 95 that is surrounded by the upright flange 94 at the center of the upper surface and opened upward. On the rear side of the storage box 7 and the rear side of the opening 95, stays 97 are provided on the bottoms 96 (FIG. 16) of the halves 7L and 7R, respectively. Both stays 97 are arranged at a position outside the flange 94 in a top view with a space in the vehicle width direction (left-right direction), and the space is about the left-right width on the rear side of the opening 95. Further, the position of the stay 97 in each half is about the middle in the left-right direction of the portion of the bottom 96 where the stay 97 is provided.

These left and right stays 97 are overlapped from the outside and bolted to the stays 44 formed on the left and right main frames 40 correspondingly. Both stays 44 form a plurality of (two in this embodiment) main frame side mounting portions that support the rear side bottom portion of the storage box 7 with a gap in the vehicle width direction.
The shroud 33 is provided so as to be in close contact with the side surface of the storage box 7 including the knee grip portion G, and the rigidity is enhanced by the support of the storage box 7.

  In this way, when the knee N is used to knee-grip the vicinity of the boss 88a in the intermediate portion in the front-rear direction of the storage box 7, the storage box 7 is pushed in the vehicle width direction by the knee N, but is disposed with a gap in the vehicle width direction. Since the bottom of the storage box 7 is supported by the pair of left and right stays 44, the support rigidity of the storage box 7 can be increased. As a result, each knee of the shroud 33 and the center cover 36 supported by the storage box 7 can be improved. The rigidity with respect to the grip portion can be increased. The number of stays 87 that support the storage box 7 in the vehicle width direction is not limited as long as the number of stays 87 is two or more.

  FIG. 16 is a view showing the half body 7R from the left side of the vehicle body, and the half body 7L has a symmetrical shape although not shown. A hook 98 and a stay 97 are formed to protrude downward along the bottom 96 of the half body 7R. The hook 98 is formed so as to protrude forward and obliquely downward at a slope portion that is inclined forward and obliquely forward at the front portion of the bottom portion 96, and is formed with a notch groove 98 a that opens toward the front. Here, the main frame 40 and the head pipe 5 are formed. Is engaged with a gusset 43 (FIG. 17) formed therebetween.

  17A shows a state immediately before the hook 98 is attached to the gusset 43, and B shows a state after the attachment. The gusset 94 is a metal plate-like member that has a substantially triangular shape in a side view in the illustrated state and is opened downward by pressing to form a substantially U-shaped cross section. The upper surface 43b is provided with a flange 43c bent downward at an intermediate portion, and below the flange 43c is an insertion hole 43d opened up and down. The opening 43a is connected to the opening 43a in a continuous space.

The notch groove 98a of the hook 98 expands forward, and the upper edge portion 98b and the lower edge portion 98c form a slope whose front side increases the opening width. The opening width of the back end portion 98d having the narrowest opening width is about the height h of the flange 43c.
Therefore, when the lower edge portion 98c side of the hook 98 is inserted into the insertion hole 43d and pushed forward, the upper edge portion 98b is guided on the upper surface 43b, and the flange 43c enters the notch groove 98a. When the flange 43c reaches the back end portion 98d, the lower edge portion 98c protrudes into the opening 43a, and the flange 43c side of the upper surface 43b is fitted into the notch groove 98a, so that the hook 98 is engaged with the gusset 98. The

  By engaging the hooks 98 of the left and right halves 7R and 7L side by side with the common gusset 43, the front sides of the halves 7R and 7L are integrated. Therefore, if the stays 97 of the half bodies 7R and 7L are bolted to the stays 44 of the main frame 40, the lower portions of the left and right half bodies 7R and 7L can be attached and integrated with the main frame 40. After that, if the upper boss 91 and the rib 92 are coupled with the tapping screw 93, the left and right half bodies 7R and 7L can be coupled and integrated to form the storage box 7 with high rigidity.

  FIG. 18 shows the speedometer portion of the display portion constituting the meter 28 provided inside the handle cover 31 (FIG. 1). The speedometer 100 is a circular liquid crystal display arranged so as to face the driver, and displays a double concentric arc display of a large arc display 101 on the outer peripheral portion and a small arc display 102 on the inside thereof.

The large arc display 101 displays the number of revolutions functioning as a tachometer, and the small arc display 102 displays a water temperature meter 103, a fuel meter 104, and the like. A speedometer 105 is displayed at the center. A odometer 106 is provided below the display, and a gear number display 107 is provided below the odometer 106.
In this way, a plurality of data can be displayed compactly on a single liquid crystal panel.

FIG. 19 is a plan view showing the grab rail 11 portion. A cross plate 48 is provided between the rear ends of the pair of left and right seat rails 10, and the cross part 110 of the grab rail 11 is overlapped thereon and fixed with bolts 111.
The grab rail 11 includes a pair of left and right grip portions 112 arranged in a substantially square shape with a rear constriction, and a cross portion 110 that connects the middle portions in the length direction of each grip 112 in the left-right direction. Are formed in an integral shape using a light alloy or the like.

  If it does in this way, it can attach simply and firmly using the cross part 110 formed comparatively wide. In addition, since the left and right grips 112 are connected and integrated at the cross part 110, the entire structure becomes one part, the number of parts is reduced, and handling and attachment / detachment work is facilitated. Moreover, since the member is highly rigid, the seat rail 10 and thus the entire body frame can be reinforced by fixing the grab rail 11 to the seat rail 10 with bolts 111.

  Next, the operation of this embodiment will be described. As shown in FIG. 4, the storage box 7 is supported above the main frame 40, the side of the storage box 7 is covered with a shroud 33, and the shroud 33 is supported by the storage box 7 that is a rigid member. It is possible to increase the support rigidity. For this reason, even if the shroud 33 is knee-gripped, the rigidity of the knee grip portion G can be ensured, and a reliable knee grip is possible even if a rigid member such as a fuel tank or a main frame is not nearby. In addition, since the main frame 40 can be disposed below the storage box 7, a complicated structure that sandwiches the storage box between the main frames can be made simple and the degree of freedom in the layout of the main frame 40 can be increased. The center of gravity of the vehicle body can be lowered.

Further, as shown in FIG. 10, weight reduction can be realized by providing a large side opening 66 in the shroud, and a plurality of ribs (a central rear rib 73, a central rear rib 74, a rear rib 75, etc.) and a step portion 61. This improves the rigidity. In addition, since the side cover 34 is attached to the shroud 33, the side cover 34 can further increase the support rigidity of the shroud 33, and the peripheral portions 33e, 33f, and 33g generated by the plurality of ribs (73, 74, 75, etc.). The appearance can be improved by covering sink marks generated on the surface of the surface.
Further, as shown in FIG. 4, the warm exhaust air that has passed through the radiator 13 passes through the side opening of the shroud 33, and further from the exhaust air outlet 60 that is formed by a gap formed at the mating portion between the side cover 34 and the shroud 33. Since it is discharged, the cooling performance is improved by smooth exhaust air.

  Further, as shown in FIG. 2 and FIG. 15, stays 44 are respectively provided on the left and right main frames 40 as mounting portions on the main frame side that support the rear side of the bottom portion 96 of the storage box 7, Since it arrange | positions with the space | interval in the width direction, the rigidity in the rear part side of the storage box 7 pushed right and left with the knee N at the time of knee grip can be improved.

  Further, as shown in FIG. 15, an engagement protrusion 72A is provided in front of the upper part of the shroud 33, an engagement protrusion 72B is provided in the rear of the upper part, and an engagement protrusion 72C is provided in the lower part, and each is supported by the headlight stay 50, which is a rigid member. Since the bracket 58, the side surface of the storage box 7, and the stay 13 provided on the side of the radiator 13 are supported, the mounting rigidity of the shroud 33 can be improved.

In addition, as shown in FIGS. 4 to 7, the box cover 35 is easily attached by providing the center cover 36 with the box opening 63 and attaching the box lid 35 for opening and closing the box opening 35 to the center cover 36. Further, the center cover 36 can be easily separated by simply unfastening the rear end portion of the center cover 36 and removing the front end portions and the intermediate portion engaging portions 36j and 36k on the side surface, and the front turn signal 26 and the like are maintained. Therefore, maintainability is improved. Further, since the flow straightening groove 62 is formed by the joint portion of the center cover 36 and the shroud 33, a flow straightening effect can be obtained, and the outer peripheral portion of the box lid 35 can be opened with an opening edge 36g of the box opening 63 provided in the center cover 36 Therefore, the split surface at the opening edge 36g of the box opening 63 becomes inconspicuous and the appearance is improved.

Side view of motorcycle according to this embodiment. Side view of body frame The figure which shows the brackets provided in the front part of a head pipe Side view of body cover around shroud Front perspective view of a small assembly comprising a shroud, center cover and side cover Front view of the small assembly Rear perspective view of the small assembly Disassembled perspective view of shroud and side cover Assembly perspective view of left and right shrouds Shroud side view Side view of side cover Front view of side cover Sectional view along line 13-13 in FIG. 14-14 sectional view of FIG. Top view of storage box Side view of half of storage box Storage box engagement structure explanatory diagram The figure which shows the display part of a meter Rear plan view of the seat rail with the grab rail attached

Explanation of symbols

3: body frame, 5: head pipe, 7: storage box, 13: radiator, 32: upper cowl, 33: shroud, 34: side cover, 35: box lid, 36: center cover, 60: air outlet, 66: Side opening, 71: mounting portion, 72: engagement protrusion, 73: center front rib, 74: center rear rib, 75: rear rib

Claims (6)

A head pipe that rotatably supports the handlebar is provided at the front end, and a main frame obliquely descending from the head pipe and extending backward, a storage box supported on the main frame, and a seat disposed behind the storage box, A motorcycle including an engine disposed below the storage box and below the main frame, and a radiator disposed in front of the engine, each side of the radiator and the engine being covered with a shroud.
A motorcycle comprising a portion of the shroud covering a side of the storage box to form a knee grip portion, and the shroud being supported by the side of the storage box. The shroud is made of resin, and includes a main body portion and a side cover that covers the side of the main body portion. The main body portion has a side opening for allowing the exhaust air of the radiator to pass therethrough, and a reinforcing rib is formed surrounding the side opening. An opening peripheral edge portion is provided, and the side cover overlaps at least a part of the opening peripheral edge portion, and a gap forming an air exhaust port is formed between the side cover and the shroud. Motorcycle. 2. The motorcycle according to claim 1, further comprising a plurality of attachment portions that are separated in a vehicle width direction at a lower rear side of the storage box and are coupled to the main frame. The shroud has an upper front portion attached to the head pipe and supported by a headlight stay for supporting a headlight, an upper rear portion is supported by the storage box, and a lower portion is supported by the radiator. The motorcycle according to claim 2 or 3. A center cover attached to the upper part of the shroud and provided with a box opening above the opening of the storage box is provided separately from the shroud, and the box opening is covered with a box lid cover so as to be freely opened and closed. ,
The motorcycle according to claim 1, wherein a rectifying groove is formed by a joint portion between the center cover and the shroud. The motorcycle according to claim 1, wherein a mounting portion for the storage box of the shroud is provided in the knee grip portion.

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