JP2013173474A - Saddle-riding type vehicle - Google Patents

Abstract

Provided is a straddle-type vehicle that is equipped with a V-type engine and that can discharge heat of the engine to the outside of the vehicle body even if a side cover is provided on the side of the V-type engine. Let it be an issue.
A side cover 40 is disposed between a main frame 15R and a fuel tank 21 to cover a side of a cylinder head 52 of a rearward tilting cylinder 46, and an opening 60 is provided between the side cover 40 and the main frame 15R. Provided.
[Effect] By providing the opening 60 between the side cover 40 and the main frame 15R, the heat of the engine 19 can be discharged to the outside of the vehicle body through the opening 60.
[Selection] Figure 2

Description

  The present invention relates to a straddle-type vehicle including a V-type engine.

  Generally, a knee grip portion is provided in a fuel tank of a saddle-ride type vehicle. Various structures of the knee grip portion have been proposed (see, for example, Patent Document 1 (FIGS. 1, 2, and 3)).

  As shown in FIG. 1 of Patent Document 1, the motorcycle (1) (the numbers in parentheses indicate the symbols described in Patent Document 1. The same applies hereinafter) is attached to the tank rail (12) of the vehicle body frame (3). A fuel tank (8) to be supported and a seat (9) disposed behind the fuel tank (8) and supported by a vehicle body frame (3) are provided. In addition, an engine (4) is disposed below the fuel tank (8), and the engine (4) is supported by the vehicle body frame (3).

Furthermore, as shown in FIG. 2 of Patent Document 1, the side cover (22) is disposed above the tank rail (12) and on the side of the lower part of the fuel tank (8). An engagement piece (25) that engages with the inner side of the side cover (22) is provided on the lower side surface of the fuel tank (8).
As shown in FIG. 3 of Patent Document 1, the engaging element (25a) provided at the tip of the engaging piece (25) is inserted into the engaging convex part (28) of the side cover (22) via the rubber (29). By being inserted, the side cover (22) is supported by the fuel tank (8).

By the way, the cylinder which is not attached | subjected to FIG. 1 of patent document 1 is recognized. This cylinder is tilted forward.
Assume that the engine (4) is replaced with a V-type engine having a forward tilt cylinder and a rear tilt cylinder. In this case, the cylinder head of the backward tilt cylinder is covered with the tank rail (12) and the side cover (22) in FIG.

  When the cylinder head of the rearward tilt cylinder is covered with the tank rail (12) and the side cover (22), the heat of the engine is likely to be accumulated inside the vehicle body, leading to a decrease in the cooling performance of the engine. That is, the V-type engine cannot be applied to the structure of Patent Document 1.

  Therefore, even a saddle-type vehicle having a V-type engine and a side cover on the side of the V-type engine is required to have a structure that can efficiently discharge the heat of the engine to the outside of the vehicle body.

Japanese Patent Laid-Open No. 2003-11872

  The present invention provides a straddle-type vehicle that includes a V-type engine and that can discharge the heat of the engine to the outside of the vehicle body even when a side cover is provided on the side of the V-type engine. Is an issue.

  The invention according to claim 1 is a vehicle body comprising a head pipe, left and right main frames extending from the head pipe to the left rear and right rear of the vehicle body, and a seat rail extending from the rear part of the main frame to the vehicle body rear and supporting the seat. A straddle-type vehicle having a frame, a V-type engine supported at the lower part of the main frame, a crankshaft of the V-type engine extending in the vehicle width direction, and a fuel tank supported at the upper part of the main frame In the vehicle side view, the V-type engine has a forward tilt cylinder inclined forward with respect to a vertical line passing through the center of the crankshaft, and the crankshaft center with respect to the forward tilt cylinder. And a cylinder head of the rearward tilt cylinder is located above the main frame and A side cover that is disposed below the fuel tank and that covers the side of the cylinder head of the rearward tilt cylinder is disposed between the main frame and the fuel tank, and is open between the side cover and the main frame. A portion is provided.

  In the invention according to claim 2, the main frame includes an upper pipe that extends from the upper part of the head pipe to the lower rear of the vehicle body and is connected to the seat rail, a lower pipe that extends from the lower part of the head pipe to the lower rear of the vehicle body, and the upper frame. It consists of a reinforcing pipe that diagonally connects the pipe and the lower pipe, and the upper pipe is disposed so as to overlap the rearward tilting cylinder in a side view of the vehicle, and a side cover is disposed above the upper pipe. It is characterized by.

  In the invention according to claim 3, the rearward tilt cylinder is provided offset from the vehicle width center to one of the left and right sides, and the side cover is disposed only on the one side of the rearward tilt cylinder. It is characterized by that.

  The invention according to claim 4 is characterized in that the outer surface of the fuel tank and the outer surface of the side cover are disposed on substantially the same plane.

  In the invention according to claim 5, in the vehicle side view, the middle cowl is provided between the front cowl and the side cover that covers the front of the head pipe, and the middle cowl covers from the head pipe to the front of the rearward tilt cylinder. It is characterized by doing so.

  The invention according to claim 6 is characterized in that the lower edge of the side cover is formed to extend in the longitudinal direction of the vehicle body, and the upper pipe is extended to the rear lower side of the vehicle body below the side cover.

  In the invention according to claim 7, the main frame includes an upper pipe that extends from the upper part of the head pipe to the lower rear of the vehicle body and is connected to the seat rail, a lower pipe that extends from the lower part of the head pipe to the lower rear of the vehicle body, and the upper pipe. The upper pipe and the seat rail are coupled by a coupling member extending in the longitudinal direction of the vehicle body so as to overlap the rearward tilting cylinder in a side view of the vehicle. A side cover is disposed above the coupling member.

In the invention according to claim 1, the cylinder head of the rearward tilt cylinder is disposed above the main frame and lower than the fuel tank, and the side of the cylinder head of the rearward tilt cylinder is covered with the side cover. An opening is provided between the main frame and the main frame.
By providing the opening between the side cover and the main frame, the heat of the engine can be discharged well from the opening to the outside of the vehicle body.

  In addition, by arranging the side cover below the fuel tank, the driver can put his / her foot on the side cover when knee-grip the fuel tank, and the knee grip performance is improved.

In the invention according to claim 2, the main frame includes an upper pipe, a lower pipe, and a reinforcing pipe that obliquely connects the pipes, and the upper pipe is disposed so as to overlap the rearward tilt cylinder in a side view of the vehicle. .
By connecting the upper and lower pipes diagonally with reinforcing pipes, the main frame was a truss frame. A small-diameter pipe is usually used for the truss frame. If the upper pipe with a small diameter is placed so as to overlap the rearward tilting cylinder, the overlap between the upper pipe and the rearward tilting cylinder is reduced and a large opening can be formed, so that the engine heat can be more easily discharged to the outside of the vehicle body. it can.

In the invention according to claim 3, the rearward tilt cylinder is provided offset from the vehicle width center to one of the left and right sides, and the side cover is disposed only on one side of the rearward tilt cylinder.
If the side cover is disposed only on one side of the rearward tilt cylinder according to the position of the rearward tilt cylinder in the vehicle width direction, the vehicle can be lighter than when the side cover is provided on both the left and right sides of the rearward tilt cylinder. be able to.

In the invention according to claim 4, the outer surface of the fuel tank and the outer surface of the side cover are arranged on substantially the same plane.
If the outer surface of the fuel tank and the outer surface of the side cover are arranged on substantially the same plane, the driver can easily knee-grip the outer surface of the side cover in addition to the outer surface of the fuel tank. By increasing the area of the knee grip, a vehicle that is easy to ride is provided.

In the invention according to claim 5, the middle cowl covers from the head pipe to the front of the rearward tilt cylinder.
If the head pipe and the front of the rearward tilt cylinder are covered with the middle cowl, the head pipe, the main frame, etc. are hidden by the middle cowl, and the appearance of the vehicle can be improved.

In the invention according to claim 6, the lower edge of the side cover is formed to extend in the longitudinal direction of the vehicle body, and the upper pipe is extended to the rear lower side of the vehicle body below the side cover.
The side cover can be made smaller by extending the lower edge of the side cover in the longitudinal direction of the vehicle body while extending the upper pipe downward in the vehicle body.
In addition, if you extend the lower edge of the side cover in the longitudinal direction of the vehicle body and extend the upper pipe to the lower rear of the vehicle body under the side cover, the space between the side cover and the upper pipe spreads, so that the area of the opening is increased. Can do.

In the invention which concerns on Claim 7, an upper pipe and a seat rail are couple | bonded by the coupling member extended so that it may overlap with a backward inclination cylinder, and a side cover is arrange | positioned above this coupling member.
The upper space of the coupling member is filled with a side cover, and the lower space of the coupling member is an opening. That is, the appearance and heat exhaustion are maintained while ensuring the rigidity of the body frame.

It is a right view of the saddle riding type vehicle according to the present invention. FIG. 2 is an enlarged view of part 2 of FIG. 1. It is a disassembled perspective view of a side cover. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. It is a figure which shows the example of a change of FIG. It is a right view of another saddle riding type vehicle.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals. The front, rear, left and right, and top and bottom used in the following description are determined based on the driver sitting on the driver seat.

A straddle-type vehicle according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the saddle riding type vehicle 10 </ b> A includes a front fork 12 that is turnably supported by a head pipe 11, a front wheel 13 that is rotatably attached to a lower end of the front fork 12, and a front fork 12. A steering handle 14 connected to the upper end, left and right main frames 15L extending from the head pipe 11 to the left rear and right rear of the vehicle body (L is a subscript indicating the left, the same applies hereinafter), R (R is a subscript indicating the right) The same applies to the following, and a middle frame 17 connected to the rear portions of the main frames 15L and R and extending substantially vertically and having a pivot shaft 16 at the bottom, and a seat rail 18 extending from the upper end of the middle frame 17 to the rear of the vehicle body. A V-type engine 19 (details will be described later) supported by the lower portions of the main frames 15L and R, and the V-type engine 1 A fuel tank 21 disposed above the main frames 15L, R and supported on the upper portion of the seat rail 18, a seat 22 disposed behind the fuel tank 21 and supported by the seat rail 18, and a pivot shaft 16 The rear swing arm 23 that is stopped at the front end and extends in the longitudinal direction of the vehicle body and swings up and down about the pivot shaft 16, the rear wheel 24 that is rotatably attached to the rear end of the rear swing arm 23, and a V-type engine The motorcycle includes a muffler 26 provided at the rear end of an exhaust pipe 25 extending from the 19 exhaust ports to the rear of the vehicle body.

  The vehicle body frame 27 includes a head pipe 11, main frames 15 </ b> L and R, a middle frame 17, and a seat rail 18. A step 28 is provided at the lower end of the middle frame 17 where the driver sitting on the driver's seat of the seat 22 puts his / her foot. The middle frame 17 and the seat rail 18 are connected by a connecting frame 29. A stay 31 extending from the connection frame 29 is provided with a pillion step 32 on which a passenger sitting on the passenger seat of the seat 22 puts his / her foot.

  The front of the head pipe 11 is covered with a front cowl 33, and the lower right side of the fuel tank 21 is covered with a side cover 40 (details will be described later).

The structure of the V-type engine 19 and the configuration of the main frame 15L will be described with reference to FIG.
As shown in FIG. 2, the V-type engine 19 includes a crankshaft 43 that is rotatably provided in the crankcase 42 and extends in the vehicle width direction, and a vertical line 44 that passes through the center of the crankshaft 43 when viewed from the right side of the vehicle. And a forward tilt cylinder 45 that tilts backward with respect to the forward tilt cylinder 45 with reference to the center point P1 of the crankshaft 43.

  The forward tilting cylinder 45 extends forward and upward from the crankcase 42, forward tilting cylinder block 47 connected to the forward tilting cylinder block 47, and forward tilting cylinder head 48. And a forward tilt cylinder head cover 49 covering the forward tilt cylinder head 48. On the other hand, the rearward tilt cylinder 46 includes a rearward tilt cylinder block 51 formed extending rearward and upward from the crankcase 42, a rearward tilt cylinder head 52 connected to the rearward tilt cylinder block 51, and the rearward tilt cylinder head 52. And a rearward tilt cylinder head cover 53 that covers the rearward tilt cylinder head 52.

  The rearward tilting cylinder head 52 and the rearward tilting cylinder head cover 53 are disposed above the main frame 15R and below the fuel tank 21. A knee grip portion 54 </ b> R (detailed later) is formed on the right side of the fuel tank 21.

  In addition, a side cover 40 that covers the right side of the cylinder head 52 and the cylinder head cover 53 of the rearward tilting cylinder 46 is disposed between the main frame 15 </ b> R and the fuel tank 21. Further, an opening 60 is provided between the side cover 40 and the main frame 15R. The heat of the backward tilting cylinder 46 can be discharged from the opening 60 to the outside of the vehicle body.

Next, the configuration of the main frame 15R will be described.
The main frame 15R includes an upper pipe 61R that extends downward from the upper portion of the head pipe 11 to the vehicle body and is connected to the middle frame 17, a lower pipe 62R that extends downward from the lower portion of the head pipe 11 and the upper pipe 61R, It consists of a reinforcing pipe 63R that connects the pipe 62R diagonally. In the embodiment, the seat rail 18 is connected to the upper pipe 61R via the middle frame 17, but the seat rail 18 may be directly connected to the upper pipe 61R.

  The crankcase 42 is connected to the upper pipe 61R, the forward tilting cylinder 45 is connected to the lower pipe 62R, and the backward tilting cylinder 46 is connected to the reinforcing pipe 63R, so that the V-type engine 19 is supported by the vehicle body frame 27. .

In addition, the upper pipe 61R is disposed so as to overlap the rearward tilting cylinder 46 as viewed from the right side of the vehicle, and the side cover 40 is disposed above the upper pipe 61R. The side cover 40 is fixed to the vehicle body frame 27 with two screws 64.
The lower edge 65 of the side cover 40 is formed to extend in the longitudinal direction of the vehicle body, and the upper pipe 61R is extended to the rear lower side of the vehicle body below the side cover 40.

  Further, when viewed from the right side of the vehicle, a middle cowl 41 is provided between the front cowl 33 and the side cover 40, and the middle cowl 41 covers from the head pipe 11 to the front of the rearward tilting cylinder 46.

The attachment structure of the side cover 40 will be described with reference to FIG.
As shown in FIG. 3, a cover front receiving seat 67 is provided on the upper edge of the upper pipe 61 </ b> R and extends rearward and upward in the vehicle body and is received by the front portion 66 of the side cover 40. A nut 68 is attached to the inner surface of the cover front receiving seat 67 in the vehicle width direction.

  In addition, the upper end 69 of the middle frame 17 is provided with a cover rear receiving seat 72 that extends forward of the vehicle body and is received by the rear portion 71 of the side cover 40. A nut 73 is attached to the inner surface in the vehicle width direction of the front end of the cover rear receiving seat 72.

  By attaching the front portion 66 of the side cover 40 to the nut 68 with the screw 64 and attaching the rear portion 71 of the side cover 40 to the nut 73 with the screw 64, the side cover 40 is attached to the vehicle body frame (FIG. 2, reference numeral 27). It is done.

The positional relationship between the fuel tank 21 and the side cover 40 and the position of the rearward tilt cylinder 46 in the vehicle width direction will be described with reference to FIG.
As shown in FIG. 4, knee grip portions 54 </ b> L and R are formed on the left and right sides of the upper plate 78 of the fuel tank 21. The outer side surface 79 of the knee grip portion 54R and the outer side surface 81 of the side cover 40 are disposed on substantially the same plane.

The side cover 40 also serves as a heat shield that blocks exhaust heat from the rearward tilting cylinder 46.
A harness 84 is disposed below the welded portion 83L between the upper plate 78 and the bottom plate 82, on the left side of the rearward tilt cylinder 46, and above the upper pipe 61L.

Next, the position of the backward tilting cylinder 46 in the vehicle width direction will be described.
The side surface 76L of the rearward tilting cylinder 46 is disposed at a distance L1 from the vehicle width center line 75 to the left side, and the side surface 76R of the rearward tilting cylinder 46 is disposed at a distance L2 from the vehicle width centerline 75 to the right side. Is done. When the distance L1 and the distance L2 are compared, L2> L1.

  That is, the rearward tilting cylinder 46 is provided offset to the right from the vehicle width center line 75, and the side cover 40 is disposed only on the right side of the rearward tilting cylinder 46. In the embodiment, the backward tilt cylinder 46 is offset to the right with respect to the vehicle width center line 75, but may be offset to the left with respect to the vehicle width center line 75. Of course, when the backward tilting cylinder 46 is offset leftward, the side cover 40 is provided on the left side in the vehicle width direction.

The side cover 40 described so far covers a part between the fuel tank 21 and the upper pipe 61R as shown in FIG.
By the way, a foot may be applied to the side cover during knee grip, and in such a case, the larger side cover is preferable. Therefore, it is required that the heat of the backward tilting cylinder 46 can be discharged to the outside of the vehicle body while making the side cover larger. An example of this will be described next.

In FIG. 5, the same structure as that of FIG. The main changes are that the dimensions of the side cover are increased and an opening is secured.
In the saddle-ride type vehicle 10B, a side cover 85 that covers the cylinder head 52 of the rearward tilting cylinder 46 and the right side of the cylinder head cover 53 is disposed between the main frame 15R and the fuel tank 21.

A first opening 87 is provided between the lower end 86 of the side cover 85 and the main frame 15R. The heat of the backward tilting cylinder 46 can be discharged from the first opening 87 to the outside of the vehicle body.
In addition, a second opening 89 is provided between the rear end 88 of the side cover 85 and the middle frame 17. The heat of the backward tilting cylinder 46 can also be discharged from the second opening 89 to the outside of the vehicle body.

  Incidentally, the body frame applied to the saddle riding type vehicle is not limited to the type shown in FIG. 2, and an example thereof will be described below.

In FIG. 6, the same structure as in FIG. The main change is that the upper pipe of the main frame and the middle frame are connected.
The main frame 91R of the saddle riding type vehicle 90 includes an upper pipe 93R extending from the upper part of the head pipe 11 downward to the rear of the vehicle body and connected to the middle frame 92, and a lower pipe 62R extending from the lower part of the head pipe 11 to the lower rear of the vehicle body. The reinforcing pipe 94R connects the rear end of the upper pipe 93R and the rear end of the lower pipe 62R obliquely.

  In addition, the middle portion of the upper pipe 93R and the front portion of the lower pipe 62R are coupled by a first pipe 95R that extends obliquely with respect to the upper pipe 93R and the lower pipe 62R. Further, the middle part of the upper pipe 93R and the middle part of the lower pipe 62R are coupled by a second pipe 96R extending substantially perpendicular to the upper pipe 93R and the lower pipe 62R. The rear portion of the upper pipe 93R and the middle portion of the lower pipe 62R are coupled by a third pipe 97R extending obliquely with respect to the upper pipe 93R and the lower pipe 62R. In addition, the rear portion of the upper pipe 93R and the rear end of the lower pipe 62R are joined by a fourth pipe 98R extending substantially perpendicular to the upper pipe 93R and the lower pipe 62R. That is, the main frame 91R becomes a truss frame. Since the truss frame is composed of a plurality of pipes, the weight can be easily reduced.

  The upper pipe 93R and the middle frame 92 are coupled to each other by a coupling member 99 extending in the longitudinal direction of the vehicle body so as to overlap the rearward tilting cylinder 46 in a side view of the vehicle, and the side cover 40 is disposed above the coupling member 99. . The coupling member 99 is provided with a cover rear receiving seat 101 that receives the rear portion of the side cover 40.

In addition, the space below the coupling member 99 serves as an opening 102 for discharging the heat of the backward tilting cylinder 46 to the outside of the vehicle body.
In the embodiment, the seat rail 18 is connected to the upper pipe 93R via the middle frame 92, but the seat rail 18 may be directly connected to the upper pipe 93R.

The effects of the saddle riding type vehicles 10A, 10B, 90 described above will be described below.
With the configuration shown in FIG. 2, by providing the opening 60 between the side cover 40 and the main frame 15R, the heat of the engine 19 can be discharged from the opening 60 to the outside of the vehicle body.

  With the configuration shown in FIG. 4, the side cover 40 is disposed below the fuel tank 21, so that the driver can touch the side cover 40 when the fuel tank 21 is knee gripped. Will improve.

  With the configuration shown in FIG. 2, the main frame 15R is formed as a truss frame by connecting the upper pipe 61R and the lower pipe 62R obliquely with the reinforcing pipe 63R. A small-diameter pipe is usually used for the truss frame. If the small-diameter upper pipe 61R is disposed so as to overlap the rearward tilting cylinder 46, the overlap between the upper pipe 61R and the rearward tilting cylinder 46 is reduced, and a large opening 60 can be formed. It can be easily discharged.

  With the configuration shown in FIG. 4, when the side cover 40 is disposed only on one side of the rearward tilting cylinder 46 in accordance with the position in the vehicle width direction of the rearward tilting cylinder 46, the side cover 40 is disposed on both left and right sides of the rearward tilting cylinder 46. The weight of the vehicle can be reduced as compared with the case where it is provided.

  With the configuration shown in FIG. 4, when the outer surface 79 of the fuel tank 21 and the outer surface 81 of the side cover 40 are arranged on substantially the same plane, the driver can add the outer surface of the side cover 40 in addition to the outer surface 79 of the fuel tank 21. 81 can also be easily gripped. By increasing the area of the knee grip, a vehicle that is easy to ride is provided.

  With the configuration shown in FIG. 2, when the head pipe 11 and the front of the rearward tilting cylinder 46 are covered with the middle cowl 41, the head pipe 11, the main frame 15R, etc. are hidden by the middle cowl 41, and the appearance of the vehicle 10A is improved. be able to.

  With the configuration shown in FIG. 2, the side pipe 40 can be made smaller by extending the lower edge 65 of the side cover 40 in the longitudinal direction of the vehicle body while the upper pipe 61R extends downward in the vehicle body.

  In addition, when the lower edge 65 of the side cover 40 is extended in the longitudinal direction of the vehicle body, and the upper pipe 61R is extended downward in the rear of the vehicle body below the side cover 40, the space between the side cover 40 and the upper pipe 61R is widened. The area of the opening 60 can be earned.

  With the configuration shown in FIG. 6, the upper space of the coupling member 99 is filled with the side cover 40, and the lower space of the coupling member 99 becomes the opening 102. That is, while ensuring the rigidity of the vehicle body frame 27, the appearance and the exhaust heat are maintained.

Note that the shape of the side cover 40 shown in FIGS. 2 and 6 and the shape of the side cover 85 shown in FIG. 5 are examples, and the side covers 40 and 85 have an opening formed in the front. Any shape may be used.
In addition, in FIG. 4, the side cover 40 is provided only on the right side of the left and right sides, but may be provided on both the left and right sides.

  Although the saddle riding type vehicle according to the present invention is applied to a motorcycle in the embodiment, it can also be applied to a tricycle or a four-wheeled vehicle that can be saddle-ridden, and may be applied to a general vehicle. Absent.

  The straddle-type vehicle of the present invention is suitable for a motorcycle.

  10A, 90 ... saddle riding type vehicle, 11 ... head pipe, 15L, R, 91L, R ... main frame, 18 ... seat rail, 19 ... V-type engine, 21 ... fuel tank, 22 ... seat, 27 ... body frame, 33 ... Front cowl, 40 ... Side cover, 41 ... Middle cowl, 43 ... Crankshaft, 44 ... Vertical line, 45 ... Forward tilt cylinder, 46 ... Back tilt cylinder, 52 ... Cylinder head, 60 ... Opening, 61L, R , 93L, R ... upper pipe, 62L, R ... lower pipe, 63L, R, 94L, R ... reinforcing pipe, 75 ... vehicle width center, 79, 81 ... outer side surface, 99 ... coupling member, P1 ... center.

Claims (7)

A head pipe (11), left and right main frames (15L, R, 91L, R) extending from the head pipe (11) to the left rear and right rear of the vehicle body, and the main frames (15L, R, 91L, R) A vehicle body frame (27) comprising a seat rail (18) extending from the rear to the rear of the vehicle body and supporting the seat (22);
A V-type engine (19) is supported under the main frame (15L, R, 91L, R), and a crankshaft (43) of the V-type engine (19) is extended in the vehicle width direction.
In the saddle riding type vehicle (10A, 90) in which the fuel tank (21) is supported on the upper part of the main frame (15L, R, 91L, R),
In the vehicle side view, the V-type engine (19) includes a forward tilt cylinder (45) inclined forward with respect to a vertical line (44) passing through the center (P1) of the crankshaft (43), A tilting cylinder (46) that tilts backward with respect to the tilting cylinder (45) with respect to the center (P1) of the crankshaft (43);
A cylinder head (52) of the backward tilting cylinder (46) is disposed above the main frame (15L, R) and below the fuel tank (21);
Between the main frame (15L, R) and the fuel tank (21), a side cover (40) that covers the side of the cylinder head (52) of the rearward tilt cylinder (46) is disposed,
A straddle-type vehicle, wherein an opening (60) is provided between the side cover (40) and the main frame (15L, R). The main frame (15L, R) includes an upper pipe (61L, R) that extends from the upper part of the head pipe (11) to the lower rear of the vehicle body and is connected to the seat rail (18), and the head pipe (11). A lower pipe (62L, R) that extends downward from the lower part of the vehicle body, and a reinforcing pipe (63L, R) that diagonally connects the upper pipe (61L, R) and the lower pipe (62L, R),
The upper pipe (61L, R) is disposed so as to overlap the rearward tilting cylinder (46) in a vehicle side view,
The straddle-type vehicle according to claim 1, wherein the side cover (40) is disposed above the upper pipe (61L, R).   The backward tilting cylinder (46) is provided by being offset from the vehicle width center (75) to one of the left and right sides, and the side cover (40) is disposed on the one side of the backward tilting cylinder (46). The straddle-type vehicle according to claim 1 or 2, wherein the straddle-type vehicle is disposed only on a side.   The outer surface (79) of the fuel tank (21) and the outer surface (81) of the side cover (40) are arranged on substantially the same plane. The saddle riding type vehicle according to the item.   A middle cowl (41) is provided between a front cowl (33) covering the front of the head pipe (11) and the side cover (40) in a side view of the vehicle, and the head pipe is supported by the middle cowl (41). The straddle-type vehicle according to any one of claims 1 to 4, characterized in that it covers from (11) to the front of the rearward tilting cylinder (46). The lower edge of the side cover (40) is formed extending in the longitudinal direction of the vehicle body,
The straddle-type vehicle according to any one of claims 2 to 5, wherein the upper pipe (61L, R) extends below the rear side of the vehicle body below the side cover (40). The main frame (91L, R) includes an upper pipe (93L, R) that extends from the upper part of the head pipe (11) to the lower rear of the vehicle body and is connected to the seat rail (18), and the head pipe (11). A lower pipe (62L, R) that extends downward from the lower part of the vehicle body, and a reinforcing pipe (94L, R) that diagonally connects the upper pipe (93L, R) and the lower pipe (62L, R),
The upper pipe (93L, R) and the seat rail (18) are coupled by a coupling member (99) extending in the vehicle front-rear direction so as to overlap the rearward tilt cylinder (46) in a side view of the vehicle,
The straddle-type vehicle according to claim 1, wherein the side cover (40) is disposed above the coupling member (99).

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