WO2011099069A1

WO2011099069A1 - Saddle-ridden vehicle

Info

Publication number: WO2011099069A1
Application number: PCT/JP2010/000840
Authority: WO
Inventors: 滝澤浩太
Original assignee: 本田技研工業株式会社
Priority date: 2010-02-10
Filing date: 2010-02-10
Publication date: 2011-08-18
Also published as: CN102741115B; CN102741115A

Abstract

Disclosed is a saddle-ridden vehicle provided with: a vehicle frame that has a main frame that extends downwards and backwards from a head pipe; an engine that is supported beneath the main frame and has a crank case; a guard member that covers at least part of the lower portion of the crank case; and a boss section, on the bottom surface of the crank case, that connects steps on which a rider places his/her feet. The aforementioned guard member is provided in front of the steps and is connected to the boss section along with the steps.

Description

Saddle-ride type vehicle

The present invention relates to a saddle-ride type vehicle such as a motorcycle.

Conventionally, in a motorcycle, the motorcycle includes a body frame having a main frame extending rearward and downward from a head pipe, an engine supported below the main frame, and a crankcase forming a part of the engine. A configuration provided with a guard member covering at least a part of the lower part is known (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 06-087479

By the way, including the above-mentioned prior art, although the guard member is often attached to a down frame extending downward from the front of the engine, the guard member can be easily attached to a vehicle not provided with the down frame. Such a configuration is desired.

In view of the above, the present invention is intended to make it possible to easily attach a guard member that covers the lower part of a crankcase of an engine in a saddle-ride type vehicle in which the engine is supported below the main frame even when the down frame is not provided. Do.

The present invention adopts the following as means for solving the above problems.
(1) A saddle-ride type vehicle according to the present invention comprises a body frame having a main frame extending rearward and downward from a head pipe, an engine supported below the main frame and having a crankcase, and a lower portion of the crankcase. And a guard member covering at least a portion, wherein the lower surface of the crankcase is provided with a boss portion for fastening a step of placing a foot on the crankcase; the guard member is more than the step It is provided on the front of the vehicle in the front-rear direction, and is fastened to the boss portion together with the step.

(2) In the saddle-ride type vehicle according to (1), a rubber may be provided between the guard member and the step.

(3) In the saddle-ride type vehicle according to (2), the step is fastened to the boss through the rubber; and the guard member is fastened and fixed to the boss without the rubber. Configuration may be adopted.

(4) In the saddle-ride type vehicle according to (2), the guard member and the step may be fastened to the boss through the rubber.

(5) In the saddle-ride type vehicle according to any one of (1) to (4), the guard member may be a flat plate portion extending forward from the boss portion in the front-rear direction of the vehicle; It may have a vertical plate part which protrudes below from the above-mentioned step toward the perpendicular direction below from the undersurface of a part.

(6) In the saddle-ride type vehicle according to (5), the vertical plate portion projects downward in the vertical direction from the lower end of a fastening member for fastening the guard member and the step to the boss portion. In addition, a configuration may be adopted in which the front end extends along the longitudinal direction of the vehicle and the front end thereof is positioned forward of the fastening member in the longitudinal direction of the vehicle.

(7) In the saddle-ride type vehicle according to (5), a drain hole for draining oil present in the engine is formed, and a vertical direction from the lower surface of the crankcase at the front of the vehicle in the longitudinal direction of the step. The flat plate portion of the guard member further extends forward of the drain bolt in the front-rear direction of the vehicle, and further includes a drain boss portion protruding downward and a drain bolt closing the drain hole. The lower part of the drain bolt is covered, and the opening part which enables the tool to be attached to and detached from the drain bolt below the drain bolt is provided; the guard member extends vertically upward from the front end of the flat plate part It may have a front wall part which covers the drain bolt from the front of the vehicles front and back direction; composition may be adopted.

(8) In the saddle-ride type vehicle according to (7), the crankcase extends vertically downward from the lower surface of the crankcase, and the drain bolt is extended from the front between the drain bolt and the front wall portion. A covering extension piece may be provided.

According to the invention described in the above (1), the guard member is fastened and fixed together with the step to the boss formed on the lower surface of the crankcase, so the guard member can be easily made to a saddle-ride type vehicle not provided with the down frame. It can be attached to Further, by fixing the guard member together with the step, a mounting boss or a fastening member dedicated to the guard member is not required, and the number of parts can be reduced and the crankcase structure can be simplified.

In the case of the above (2), the impact transmitted to the step can be mitigated when the obstacle contacts the guard member.

In the case of the above (3), the vibration transmitted from the engine to the step can be mitigated, and the fastening structure can be miniaturized since the guard member can be firmly fastened to the boss. Further, by rubber-mounting only the steps, the rubber can be miniaturized as compared with the case where the guard member is also rubber-mounted.

In the case of the above (4), the vibration transmitted from the engine to the step can be mitigated, and the guard member is also attached to the lower surface of the crankcase through the rubber so that the shock transmitted to the boss when an obstacle contacts the guard member. By relaxing, the boss can be miniaturized.

In the case of the above (5), it is possible to make it difficult for an obstacle to come in contact with a portion located below the lower surface of the crankcase in the step.

In the case of the above (6), an obstacle can be made less likely to hit the guard member and the fastening member of the step from below and from the front.

In the case of the above (7), the drain bolt can be attached and detached from the front side of the engine with a relatively small number of vehicle components, and the maintainability can be improved. Further, by the guard member covering the front of the drain bolt, it is possible to make it difficult for the obstacle to hit the drain bolt from the front while arranging the drain bolt in front of the step.

In the case of the above (8), the obstacle from the front can be made more difficult to contact with the drain bolt.

FIG. 1 is a left side view of a motorcycle that is an embodiment of a saddle-ride type vehicle according to the present invention. FIG. 5 is a left side view of a lower front side of a crankcase of an engine of the motorcycle. It is a front view of the above-mentioned crankcase lower front. It is a bottom view of the above-mentioned crankcase lower front side. It is a perspective view at the time of seeing the guard member of the said crankcase lower front side from diagonally upward. It is a perspective view at the time of seeing the said guard member from diagonally downward. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is sectional drawing which shows the modification of FIG. It is sectional drawing which shows the other modification of FIG.

Hereinafter, an embodiment of the present invention will be described using the drawings. The directions such as front, rear, left, and right in the following description are the same as the directions of the vehicle described below unless otherwise specified. Further, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left of the vehicle, and an arrow UP indicating the upper side of the vehicle are shown at appropriate positions in the drawings used for the following description.

FIG. 1 shows a motorcycle 1 which is a saddle-ride type vehicle to which the structure according to the present embodiment is applied. First, the front wheel 2 is rotatably provided at the front of the vehicle in the motorcycle 1, and the front fender 3 is provided at the top of the front wheel 2. A bar handle 4 for steering the front wheel 2 is provided above the front fender 3. The bar handle 4 is provided at an upper portion of a steering stem 7 rotatably supported by a head pipe 6 formed at the front end of the vehicle body frame 5. It is done.

The lower portion of the steering stem 7 is provided with a plate-shaped lower bridge 8 extending in the left and right direction, and the upper end of a pair of left and right front forks 9 rotatably supporting the front wheel 2 at the lower portion It is fixed. That is, the front fork 9 is positioned below the head pipe 6.

The body frame 5 is divided into a fork from the rear end of the main frame 10 from the rear end of the main frame 10 and the main frame 10 made of a steel pipe material of one rectangular cross section extending obliquely backward downward from the head pipe 6 The seat rail 11 is extended, and then extends rearward in a substantially horizontal state. An air-cooled single-cylinder engine 12 is supported below the rear of the main frame 10, and a seat 13 on which a driver is seated is supported above the substantially horizontal area of the seat rail 11.

The engine 12 is disposed below the main frame 10 in a state in which a crank shaft (not shown) extends in the left-right direction. A cylinder 12b is supported from the front end of the crankcase 12a of the engine 12 so as to face forward in a substantially horizontal state.
In the motorcycle 1, driving is performed in front of the seat 13 above the main frame 10, more precisely between the seat 13 and the head pipe 6, above the main frame 10 and above the main frame cover 23. A straddle space S is formed which is a straddle space when a person sits on the seat 13 for getting on the vehicle.

From the rear of the main frame 10, the left and right pivot plates 10a extend downward, and the front end of the swing arm 15 is supported so as to be able to swing vertically in the upper and lower intermediate portions of these left and right pivot plates 10a via the swing pivot 14 It is done. A rear wheel 16 is rotatably supported at the rear end of the swing arm 15.
A rear cushion 17 is interposed between the swing arm 15 and the seat rail 11, and a front end of an exhaust pipe 18 extending rearward is connected to a cylinder 12b of the engine 12. To the rear end of the exhaust pipe 18, a muffler 19 extending rearward and upward on the right side of the rear wheel 16 is connected.

The vehicle body cover 20 which constitutes the vehicle appearance of the motorcycle 1 is composed of a plurality of resin cover bodies. More specifically, the vehicle body cover 20 has a handle cover 21 for covering the center side with the left and right end portions of the bar handle 4 facing outward and a front located below the handle cover 21 and above the front fender 3 A cover 22 and a main frame cover 23 connected to the rear end of the front cover 22 and mainly enclosing the main frame 10 are included. A lower cover 24 connected to the lower ends of the front cover 22 and the main frame cover 23 mainly covers the side of the cylinder 12 b of the engine 12, and a rear end of the main frame cover 23 and the lower cover 24. And a rear cover 25 mainly covering the lower side of the seat 13.

A step 31 for supporting the driver's foot seated on the seat 13 is disposed below the crankcase 12a.
As shown in FIGS. 2 to 4, the step 31 has a left and right step body 31a on which the driver's foot is placed, and a connecting bar 32 connecting the left and right step bodies 31a. The connecting bar 32 is formed, for example, by bending a circular steel material into a predetermined shape, and extends obliquely upward from the left and right ends of the left and right intermediate parts 32a extending in the left and right direction below the crankcase 12a. And the left and right support arms 32b for supporting the left and right step bodies 31a. For example, left and

right brackets

33 and 36 formed by bending and forming a steel plate into a predetermined shape are joined to the left and right middle portions 32 a of the connecting bar 32.

The left bracket 33 has a convex portion 33a having a semicircular cross-section and welded in an aligned manner from below at the outer periphery on the left side of the left and right intermediate portions 32a of the connecting bar 32, and the convex portion 33a has a triangular shape in bottom view Front and rear

horizontal plate portions

34, 35. The tops of the front and rear

horizontal plate portions

34 and 35 are front and

rear fastening portions

34a and 35a for front and

rear bosses

41 and 42 provided on the left side of the lower surface 12c (see FIG. 2) of the crankcase 12a.

Similarly, the right bracket 36 has a convex portion 36a having a semicircular cross section, which is welded to the right outer periphery of the left and right middle portions 32a of the connection bar 32 from below and in a triangular shape in front and rear of the convex portion 36a. It has a shape and protrudes front and rear

horizontal plate parts

37 and 38. The tops of the front and rear

horizontal plate portions

37 and 38 are front and

rear fastening portions

37a and 38a with respect to front and

rear boss portions

43 and 44 provided on the right side of the lower surface 12c of the crankcase 12a.

Here, the crankcase 12a is divided into a left case body 26 forming the left side portion, a right case body 27 forming the right side portion, and a transmission case body 28 attached further to the right of the right case body 27. It is done. Each case body 26 to 28 is individually integrally formed by, for example, aluminum casting.

The mating surface S1 of the left and

right case bodies

26 and 27 has a planar shape orthogonal to the left and right direction, and is provided to be biased to the left of the vehicle body left-right central plane CS. The left and

right case bodies

26 and 27 are integrally fastened and fixed by a plurality of bolts or the like in a state where they are in contact with each other on the mating surface S1.

The inner side surface of the left case cover 26a abuts on the outer side surface S3 of the left case body 26, and in this state, the left case body 26 and the left case cover 26a are integrally fastened and fixed.
On the other hand, the inner side surface of the transmission case body 28 abuts on the outer side surface S2 of the right case body 27, and in this state, the right case body 27 and the transmission case body 28 are integrally fastened and fixed.
The inner surface of the right case cover 28a is in contact with the outer surface S4 of the transmission case body 28. In this state, the transmission case body 28 and the right case cover 28a are integrally fastened and fixed.

On the lower surface 12c of the crankcase 12a (the lower surface of the left case body 26), cylindrical front and

rear bosses

41 and 42 projecting downward are respectively provided at portions corresponding to the front and

rear fastening portions

34a and 35a of the left bracket 33. It is integrally formed.
In the lower surface 12c of the crankcase 12a (the lower surface of the transmission case 28), cylindrical front and rear bosses 43, which project downward, are provided at portions corresponding to the front and

rear fastening portions

37a and 38a of the right bracket 36. Each 44 is integrally formed.

The

fastening portions

34a, 35a, 37a, 38a of the left and

right brackets

33, 36 respectively abut on the lower end surfaces of the bosses 41 to 44 of the crankcase 12a via a rubber bush 65 described later. The left and right brackets are screwed and screwed into the screw holes H2 (see FIG. 7) of the bosses 41 to 44 through the bolts B1 inserted into the bolt insertion holes H1 (see FIG. 7) of the

portions

34a, 35a, 37a, 38a. 33, 36 and then step 31 is fastened to the lower surface 12c of the crankcase 12a via the rubber bush 65. The lines C1 to C4 in the figure indicate central axes of the bosses 41 to 44, respectively.

Further, a drain bolt 51 for draining engine oil in the crankcase 12a is screwed on and fixed to the front side of the lower surface 12c of the crankcase 12a (the lower surface of the right case body 27). The drain bolt 51 is provided on the front side of the step 31 so as to be biased to the right of the vehicle body left-right center plane CS. The lower surface 12c of the crankcase 12a has a cylindrical shape from the lower surface 12c of the crankcase 12a so as to form a screw hole (drain hole 52a, see FIG. 2) of the drain bolt 51 at a portion corresponding to the drain bolt 51. The drain bosses 52 are integrally formed. The line C5 in the figure indicates the central axis of the drain boss portion 52.

At the front side of the lower surface 12c of the crankcase 12a (the lower surface of the right case body 27) and immediately before the drain boss portion 52, an extending piece 53 extending downward is integrally formed. The tip (lower end) of the extension piece 53 is located lower than the lower end height of the drain bolt 51 (indicated by a line T1 in FIG. 2). The extending piece 53 has a thick plate shape (wall shape) substantially orthogonal to the front-rear direction, and extends downward in a rectangular shape (strip shape) long in the vertical direction in front view. The lateral width of the extension piece 53 is slightly smaller than the lateral width of the drain boss portion 52 and is substantially the same as the lateral width of the drain bolt 51.

The left and right

front bosses

41 and 43 are respectively disposed behind and to the left and right of the drain boss 52 and the drain bolt 51. The drain bosses 52 and the left and right

front bosses

41 and 43 are relatively large apart in the front view and relatively small in the side view. The central axis C5 of the drain boss 52 and the central axes C1 and C3 of the left and right

front bosses

41 and 43 in the lower surface view are separated by substantially the same distance.

The left and right position of the center axis C1 of the left front boss 41 is located on the left and right inside of the left and right position of the center axis C2 of the left rear boss 42, and the left and right position of the center axis C3 of the right front boss 43 is the right rear boss 44 The positions are substantially the same as the left and right positions of the central axis C4. The front and rear positions of the central axes C1 and C3 of the left and right

front bosses

41 and 43 are substantially the same, and the front and rear positions of the central axes C2 and C4 of the left and right

rear bosses

42 and 44 are substantially the same.

Here, a guard member 61 is attached to the lower front side of the crankcase 12a to cover the periphery of the drain bolt 51 from the front and the lower side.
The guard member 61 is provided forward of the step 31 and is fastened to the left and right

front bosses

41 and 43 together with the

front fastening portions

34 a and 37 a of the left and

right brackets

33 and 36.

Referring to FIGS. 5 and 6 together, the guard member 61 is made of thick steel material, and a pair of left and right vertical plate portions 63, which are erected downward, are welded to the lower surface of the substantially horizontal flat plate portion 62a of the guard body 62. Do.
The guard body 62 has the flat plate portion 62a having a substantially trapezoidal shape having a narrow width on the front side in a lower surface view, a front wall portion 62b bent upward from the front edge portion of the flat plate portion 62a, and inclined sides on the left and right And left and right side wall portions 62c which are bent upward from the edge. The flat plate portion 62a covers the periphery of the drain bolt 51 from below, the front wall portion 62b covers the periphery of the drain bolt 51 from the front, and the left and right side wall portions 62c cover the periphery of the drain bolt 51 from diagonally outside.

The flat plate portion 62 a extends from the periphery of the left and right

front bosses

41 and 43 to the front of the vehicle to a position ahead of the drain bolt 51. A front portion of the flat plate portion 62a is a front sloped portion 62d which is bent and extended slightly upward. The left and right side portions at the rear of the flat plate portion 62a are left and right guard fastening portions 62e which are fastened to the left and right

front boss portions

41 and 43 together with the

front fastening portions

34a and 37a of the left and

right brackets

33 and 36. In addition, the code | symbol H3 in a figure shows the bolt insertion hole of the guard fastening part 62e. The rear edge portion of the flat plate portion 62a is cut in a convex arc shape in the forward direction.

The left and right vertical plate portions 63 have a flat plate shape substantially orthogonal to the left and right direction, and are provided in a strip shape long in the front and back direction. The lower edge of the left and right vertical plate portion 63 is the lower end height of a portion located below the lower surface 12c of the crankcase 12a in the step 31 (right and left intermediate portions 32a of the connecting bar 32) and the

convex portions

33a and 36a of the left and

right brackets

33 and 36 It is located below the height and is located below the lower end height of the bolt B1 for fastening the step 31 and the guard member 61 to the left and right

front bosses

41, 43. Line T2 in FIG. 2 indicates the lower edge height of the left and right vertical plate portion 63.

At the front of the left and right longitudinal plate portion 63, a front inclined edge 63a that inclines forward is formed, and the front inclined edge 63a of the left and right longitudinal plate portion 63 is a lower surface of the front inclined portion 62d of the flat plate portion 62a in a side view. It is provided to be generally continuous with the rear of the The left and right longitudinal plates 63 have substantially the same shape, and the front ends of the left and right longitudinal plates 63 are more than the

front bosses

41 and 43 on the left and right, and the front ends of the bolts B1 fastening the step 31 and the guard member 61 thereto. It extends to the front. The guard member 61 is provided substantially symmetrically with respect to the center position (axis C5) of the drain bolt 51.

The periphery of the drain bolt 51 is covered by the left and right middle portions 32 a of the connecting bar 32 from the rear thereof. At a central portion of the flat plate portion 62 a of the guard member 61, an opening 62 f is formed which allows the drain bolt 51 to be detachably attached to the drain bolt 51 from below. The front end (lower end) of the extension piece 53 is inserted between the front wall 62 b of the guard member 61 and the drain bolt 51. The front wall portion 62 b and the extending piece 53 cover the periphery of the drain bolt 51 from the front.

The lower edge front side of the left and right side wall portions 62c of the guard member 61 is separated from the left and right side edge portions of the flat plate portion 62a (front inclined portion 62d), and the front ends of the left and right side wall portions 62c are the left and right sides of the front wall portion 62b. It abuts on the side edge from behind and supports this front wall 62b from behind. Thereby, the fall to the back of front wall part 62b at the time of an obstacle contacting front wall part 62b of guard member 61 from the front is deterred.

Hereinafter, the attachment structure of the step 31 and the guard member 61 to the boss 41 at the left front of the crankcase 12a will be described with reference to FIGS. 7 to 9, but the attachment of the step 31 and the guard 61 to the boss 43 at the right front of the crankcase 12a. The structure is also the same.

As shown in FIG. 7, a rubber bush 65 is attached to the fastening portion 34a of the bracket 33, and the boss 41 and thus the crankcase 12a via the rubber bush 65 fasten the fastening portion 34a and thus the step 31 in a floating state (rubber Mounted).

The rubber bush 65 includes a rubber portion 66 having a cylindrical portion 66a penetrating the bolt insertion hole H1 of the fastening portion 34a and upper and lower

circular portions

66b and 66c integrally or separately provided on the upper and lower outer periphery thereof; And a cylindrical metal collar 67 inserted and held in the cylindrical portion 66a.

The fastening portion 34 a of the bracket 33 is nipped between the upper and

lower disk portions

66 b and 66 c of the rubber portion 66. The upper end surfaces of the rubber portion 66 and the collar 67 abut on the lower end surface of the boss portion 41 via a disk-shaped flat washer 67 a. The upper surface of the guard fastening portion 62 e of the guard member 61 abuts on the lower end surfaces of the rubber portion 66 and the collar 67.

In this state, the bolt B1 is inserted from below into the guard fastening portion 62e and the rubber bush 65, and the bolt B1 is screwed to the boss portion 41 and tightened, whereby the fastening portion 34a (step 31) is a flat washer 67a (boss While elastically supporting (rubber mounting) between the upper and

lower disc portions

66b and 66c between the portion 41) and the guard fastening portion 62e, the guard fastening portion 62e (guard member 61) is interposed between the boss portion 41 and the rubber portion 66. It is fastened and fixed to the rigid through only the collar 67 and the flat washer 67a.

In the attachment structure of the step 31 to the left and

right bosses

42 and 44 on the rear side of the crankcase 12a, a flat washer 67b (see FIG. 7) is used instead of the guard fastening portion 62e (guard member 61). 2 to 4) are used.

Further, the guard member 61 may be elastically supported together with the step 31 at the left and

right bosses

41 and 43 on the front side of the crankcase.
That is, as shown in FIG. 8, the fastening portion 34 a of the bracket 33 and the guard fastening portion 62 e of the guard member 61 are sandwiched between the upper and

lower disk portions

66 b and 66 c of the rubber portion 66. And a flat washer 67b replacing the guard fastening portion 62e is disposed on the lower end surface of the collar 67, and in this state, the bolt B1 is screwed to and tightened on the boss portion 41, thereby fastening the fastening portion 34a (step 31) and the guard fastening. The portion 62e (guard member 61) may be elastically supported between the flat washer 67a (boss portion 41) and the flat washer 67b via the upper and

lower disc portions

66b and 66c.

Further, as shown in FIG. 9, an intermediate disc portion 66d is further provided integrally or separately at the upper and lower intermediate portions of the cylindrical portion 66a, and the fastening portion 34a of the bracket 33 and the guard member 61 with respect to the attachment structure of FIG. The middle disc portion 66d is sandwiched between the guard fastening portions 62e, and in this state, the bolt B1 is screwed and tightened to the boss portion 41, whereby the fastening portions 34a (step 31) and the guard fastening portions 62e (guard member 61) ) May be individually resiliently supported via the upper and

lower disc portions

66b and 66c and the intermediate disc portion 66d between the flat washer 67a (the boss 41) and the flat washer 67b.

As described above, the motorcycle 1 in the above embodiment includes the vehicle body frame 5 having the main frame 10 extending rearward and downward from the head pipe 6, the engine 12 supported below the main frame 10, and the engine 12 And a guard member 61 covering at least a part of the lower part of the crankcase 12a.
In the motorcycle 1, bosses 41 to 44 are provided on the lower surface 12c of the crankcase 12a for fastening a step 31 on which a passenger places a foot, and the guard member 61 is disposed forward of the step 31. While being provided, it is fastened with the said step 31 to the boss |

hub parts

41 and 43 on the front side of the crankcase 12a.

According to this configuration, the guard member 61 is fastened together with the step 31 to the

bosses

41 and 43 formed on the front side of the lower surface 12c of the crankcase 12a, thereby securing the guard member even to a saddle-ride type vehicle without a down frame. 61 can be easily attached. Further, by fixing the guard member 61 together with the step 31, a mounting boss and a fastening member dedicated to the guard member 61 become unnecessary, and the number of parts can be reduced and the crankcase structure can be simplified.

Further, in the above-mentioned motorcycle 1, as shown in FIGS. 7 and 9, when the rubber portion 66 is provided between the guard member 61 and the step 31, when an obstacle contacts the guard member 61. The impact transmitted to step 31 can be mitigated.

At this time, as shown in FIG. 7, the step 31 is fastened to the

bosses

41 and 43 through the rubber portion 66, and the guard member 61 is attached to the

bosses

41 and 43 without the rubber portion 66. By being fastened and fixed, the vibration transmitted from the engine 12 to the step 31 can be alleviated, and the fastening structure can be miniaturized since the guard member 61 can be firmly fastened to the

bosses

41 and 43. Further, by rubber-mounting only the step 31, the rubber portion 66 (rubber bush 65) can be miniaturized as compared with the case where the guard member 61 is also rubber-mounted.

On the other hand, as shown in FIGS. 8 and 9, the guard member 61 and the step 31 are fastened to the

bosses

41 and 43 via the rubber portion 66, thereby alleviating the vibration transmitted from the engine 12 to the step 31. By attaching the guard member 61 to the lower surface 12c of the crankcase 12a via the rubber portion 66, the shock transmitted to the

bosses

41 and 43 when the obstacle contacts the guard member 61 is alleviated, and this boss is The

parts

41 and 43 can be miniaturized.

Further, in the above-mentioned motorcycle 1, the guard member 61 is a flat plate portion 62a extending from the

boss portions

41, 43 to the front of the vehicle and a lower surface of the flat portion 62a. By having the vertical plate portion 63 protruding downward, an obstacle can be made less likely to contact the portion positioned below the lower surface 12 c of the crankcase 12 a in step 31.

Further, in the above-described motorcycle 1, the vertical plate portion 63 protrudes below the lower end of the bolt B1 for fastening the guard member 61 and the step 31 to the

boss portions

41 and 43, By extending along the direction and having the front end thereof positioned forward of the bolt B1, an obstacle can be made less likely to hit the guard member 61 and the bolt B1 for fastening the step 31 from below and from the front. .

Further, in the above-mentioned motorcycle 1, a drain hole 52a for extracting oil in the engine 12 is formed, and a drain boss portion 52 projecting downward from the lower surface 12c of the crankcase 12a in front of the step 31 The flat portion 62a of the guard member 61 extends forward from the drain bolt 51 to cover the lower side of the drain bolt 51, and the drain bolt 51 has a drain bolt 51 for closing the drain hole 52a. The guard member 61 has an opening 62f which enables the tool to be attached to and detached from the drain bolt 51 below the front portion 51, and the guard member 61 extends upward from the front end of the flat plate portion 62a to cover the drain bolt 51 from the front. It has a wall 62b. According to this configuration, the drain bolt 51 can be attached and detached from the front side of the engine 12 with a relatively small number of vehicle components, and the maintainability can be improved. Further, the guard member 61 covers the front of the drain bolt 51, so that the drain bolt 51 can be made less likely to hit the drain bolt 51 from the front while the drain bolt 51 is disposed in front of the step 31.

In the saddle-ride type vehicle, the crankcase 12a extends downward from the lower surface 12c and covers the drain bolt 51 from the front between the drain bolt 51 and the front wall portion 62b. The provision of the piece 53 can make it more difficult for the obstacle from the front to contact the drain bolt 51.

The present invention is not limited to the above-described embodiment. For example, the present invention is not limited to motorcycles, and may be applied to three- or four-wheeled saddle-ride type vehicles.
And the composition in the above-mentioned embodiment is an example of the present invention, and it can not be overemphasized that various change is possible in the range which does not deviate from the gist of the present invention.

According to the present invention, it is possible to easily attach the guard member even to a saddle-ride type vehicle not equipped with the down frame, by fastening and fixing the guard member together with the step to the boss formed on the lower surface of the crankcase. Become. Further, by fixing the guard member together with the step, a mounting boss or a fastening member dedicated to the guard member is not required, and the number of parts can be reduced and the crankcase structure can be simplified.

1 Motorcycles (saddle type vehicles)
Reference Signs List 5 body frame 6 head pipe 10 main frame 12 engine 12a crankcase 12c lower surface 31 step 41 to 44 boss 51 drain bolt 52 drain boss 52 drain hole 53 extension piece 61 guard member 62a flat plate 62b front wall 62f opening 63 vertical plate part 66 rubber part (rubber)
B1 bolt (fastening member)

Claims

A vehicle body frame having a main frame extending rearward and downward from a head pipe, an engine supported below the main frame and having a crankcase, and a guard member covering at least a part of the lower portion of the crankcase A riding type vehicle,
The lower surface of the crankcase is provided with a boss for fastening a step of putting a foot on the occupant;
The guard member is provided forward of the step in the vehicle front-rear direction, and is fastened to the boss with the step;
A saddle-ride type vehicle characterized by
The straddle-type vehicle according to claim 1, wherein a rubber is provided between the guard member and the step.
The step is fastened to the boss through the rubber;
The guard member is fastened and fixed to the boss without intervention of rubber;
A saddle-ride type vehicle according to claim 2, characterized in that.
The saddle-ride type vehicle according to claim 2, wherein the guard member and the step are fastened to the boss portion via the rubber.
The guard member is
A flat plate portion extending forward from the boss portion in the longitudinal direction of the vehicle;
A vertical plate portion projecting downward from the lower surface of the flat plate portion in the vertical direction from the lower surface of the step;
The saddle-ride type vehicle according to any one of claims 1 to 4, characterized in that
The vertical plate portion projects vertically downward from the lower end of a fastening member for fastening the guard member and the step to the boss portion, and extends along the vehicle longitudinal direction to have its front end The saddle-sliding type vehicle according to claim 5, characterized in that is positioned forward of the fastening member in the front-rear direction of the vehicle.
A drain hole for draining oil in the engine and a drain boss projecting downward from the lower surface of the crankcase in the front-rear direction of the vehicle in the longitudinal direction of the vehicle, and the drain hole are closed. Further comprising: a drain bolt;
The flat plate portion of the guard member extends forward of the drain bolt in the front-rear direction of the vehicle to cover the lower side of the drain bolt, and makes the tool detachable from the drain bolt below the drain bolt. With an opening;
The guard member further includes a front wall portion extending vertically upward from the front end of the flat plate portion and covering the drain bolt from the front of the vehicle in the front-rear direction;
A saddle-ride type vehicle according to claim 5, characterized in that.
The crankcase is provided with an extension piece extending vertically downward from the lower surface thereof and covering the drain bolt from the front between the drain bolt and the front wall portion. The saddle-ride type vehicle according to 7.