WO2013094294A1

WO2013094294A1 - Straddled vehicle

Info

Publication number: WO2013094294A1
Application number: PCT/JP2012/076615
Authority: WO
Inventors: 大坪　守; 恵介新井; 宏和原; 敬済林
Original assignee: 本田技研工業株式会社
Priority date: 2011-12-21
Filing date: 2012-10-15
Publication date: 2013-06-27
Also published as: JP5997179B2; JPWO2013094294A1; BR112014015318B1; BR112014015318A2; CN104010931A; CN104010931B; AR089377A1; BR112014015318A8; CO6980652A2

Abstract

A two-wheeled motor vehicle (10) is equipped with: an air cleaner (71) provided to a lower section of a main frame (52) and to the rear of a head pipe (51); and a main-frame cover (42) for covering the air cleaner (71) and an upper section of the main frame (52). The main-frame cover (42) is equipped with a lengthwise middle section (91), and a frontal section (93) located to the front of the lengthwise middle section (91). The frontal section (93) is integrally provided with a stepped section (95). The stepped section (95) has openings (48L, 48R) through which external air supplied to the air cleaner (71) passes.

Description

Saddle riding vehicle

The present invention relates to an improvement of a saddle riding type vehicle.

A straddle-type vehicle is known in which an air cleaner is disposed below the main frame and the air cleaner and the main frame are covered with a main frame cover (see, for example, Patent Document 1 (FIGS. 1 and 8)).

In FIG. 1 of Patent Document 1, a main frame is extended from the head pipe to the rear of the vehicle, an air cleaner is disposed below the main frame, and the air cleaner and the main frame are covered with a main frame top cover. A straddle-type vehicle having an opening for taking in outside air is disclosed.

In Patent Document 1, since the main frame top cover is disposed close to the main frame, the height of the main frame top cover (the height from the ground to the top surface of the cover) can be kept low. As a result, a sufficient space for occupants to ride on is ensured, and favorable boarding / exiting properties are obtained.

By the way, the handle includes switches such as a cell switch and a winker switch, and a throttle. From the switches, the harness extends to the in-vehicle control unit, and from the throttle grip, the throttle cable extends to the throttle body.
These harnesses and cables are lowered along the head pipe and disposed along the lower surface of the main frame top cover.

If the main frame top cover is installed close to the main frame, the space for the cable and harness to pass becomes narrow, and countermeasures are required. Therefore, there is a demand for a technique that sufficiently secures a space between the main frame cover and the main frame at the front portion of the main frame while improving the ability to get on and off the vehicle.

Japanese Patent Laid-Open No. 10-16851

An object of the present invention is to provide a technique for sufficiently securing a space between a main frame cover and a main frame at the front portion of the main frame while improving the ability to get on and off the vehicle.

The invention according to claim 1 is a head pipe that supports a steering system in a steerable manner, a main frame that extends rearward and downward from the head pipe, an air cleaner that is disposed below the main frame and behind the head pipe, A straddle-type vehicle that covers at least an upper side and a side of the air cleaner and the main frame, and has a main frame cover having an opening through which outside air supplied to the air cleaner passes. A step portion formed so as to be located above the intermediate portion and the rear portion to be located below the intermediate portion in the longitudinal direction is integrally provided, and the step portion is provided with an opening. It is characterized by.

The invention according to claim 2 is characterized in that an air intake opening for taking in outside air is provided in the air cleaner, and the main frame cover includes an inner wall portion extending inward from the periphery of the opening portion.

In the invention according to claim 3, the opening is composed of a pair of left opening and right opening, the left and right openings are in plan view, at least part of which overlaps the main frame, and the inner wall is A part facing the main frame is cut out.

The invention according to claim 4 is characterized in that the opening overlaps with the intake opening of the air cleaner in a vertical direction in a side view.

The invention according to claim 5 is characterized in that the opening overlaps with the intake opening of the air cleaner in the vehicle width direction in plan view.

The invention according to claim 6 is characterized in that it further includes a guide member that is positioned in front of the step portion and provided at an upper portion of the main frame, and that restricts a moving range of the wiring and piping.

In the invention according to claim 7, the main frame cover includes an inner wall portion extending from the lower edge of the opening, and a bent portion that is bent upward is provided at an inner side end portion of the inner wall portion. It is characterized by being.

In the invention according to claim 1, the main frame cover is integrally provided with a step portion whose front is located above the middle portion and whose rear is located below, and the step portion is provided with an opening.
Since the upper surface of the main frame cover behind the step portion is positioned below, it is possible to easily straddle the main frame cover when an occupant gets on and off. As a result, boarding / exiting ability can be improved.

Also, since the upper surface of the main frame cover in front of the step portion is located above, the internal space of the front portion of the main frame cover is expanded. Increasing the internal space increases the degree of freedom of cable / harness placement and enables optimal cable / harness placement.

Furthermore, an opening was provided in the step. That is, the opening is provided on the inclined surface that is closer to the vertical than the other surfaces. If the inclined surface is nearly vertical, rainwater is less likely to enter from a horizontal surface or inclined surface, and intrusion of rainwater or the like from the opening into the intake system is suppressed.

In the invention which concerns on Claim 2, the inner wall part is provided in the main frame cover inward in the opening part of the main frame cover. The inner wall portion can suppress the intrusion of rainwater or the like from the opening into the intake opening, thereby improving the waterproofness and dustproofness to the intake system.
In addition, the inner wall extending from the opening can make the structure inside the main frame cover difficult to see from the opening, and the appearance of the vehicle is not impaired.

In the invention according to claim 3, the opening is provided with an inner wall portion, and a portion of the inner wall portion on the main frame side is cut away. By cutting out the part of the inner wall on the main frame side, the left and right openings can be placed closer to the center in the vehicle width direction, so the left and right openings can be placed in the main frame cover in a compact manner. The appearance around the opening can be improved. Moreover, since the path of the outside air can be made into a maze structure by the cutout portion of the inner wall portion and the main frame, the waterproofness and dustproofness can be further enhanced.

In the invention according to claim 4, since the opening and the intake opening are arranged so as to overlap in the height direction, the outside air entering from the opening is smoothly guided to the intake opening. As a result, the intake resistance can be reduced.

In the invention according to claim 5, since the intake opening is arranged so as to overlap with the opening in a plan view, the bypass of the outside air entering from the opening is reduced, and the intake opening is smoothly guided to the intake opening. As a result, the intake resistance can be reduced.

In the invention according to claim 6, the guide member is provided in front of the vehicle from the step portion and above the main frame. By this guide member, the moving range of the wiring and piping arranged along the main frame is regulated. As a result, the space ahead of the step can be effectively utilized.

In the invention according to claim 7, since the bent portion that is bent upward is provided at the side end portion of the inner wall portion that extends from the lower edge of the opening portion, the intrusion of rainwater can be suppressed.

1 is a left side view of a motorcycle according to a first embodiment of the present invention. FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 2 is an enlarged side view of the air cleaner and its peripheral structure of the motorcycle of FIG. 1. FIG. 4 is a sectional view taken along line 4-4 of FIG. FIG. 2 is a diagram showing a positional relationship between a cutout portion provided on an inner wall portion of a main frame cover of the motorcycle of FIG. 1 and a main frame. Fig. 2 is a perspective view of an inner wall portion of a main frame cover of the motorcycle shown in Fig. 1. Fig. 2 is a cross-sectional view of a main frame cover, a main frame, and a head pipe of the motorcycle shown in Fig. 1. FIG. 8 is a sectional view taken along line 8-8 in FIG. FIG. 2 is a diagram showing a positional relationship between an opening of a main frame cover of the motorcycle of FIG. 1 and an intake opening of an air cleaner. FIG. 10 is a sectional view taken along line 10-10 of FIG. FIG. 6 is a diagram for explaining the effect provided by the inner wall portion of the main frame cover of the motorcycle of FIG. 1 in comparison with a comparative example. FIG. 6 is a partial cross-sectional view of a motorcycle according to a second embodiment of the present invention. It is a bottom view of the inner wall part on either side of FIG. It is a figure when the opening part on either side of FIG. 12 is seen from the back of a main frame cover. It is a perspective view of the opening part on either side of FIG. It is a figure when the opening part on either side of FIG. 12 is seen from the inner side of a main frame cover. FIG. 17 is a sectional view taken along line 17-17 in FIG.

Hereinafter, embodiments of the present invention will be described in detail.

A first embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a motorcycle 10 includes a steering system 13 that supports a front wheel 11 in a steerable manner, a rear wheel suspension system 14 that supports a rear wheel 12 in a swingable manner, and a front wheel 11 and a rear wheel. A straddle-type vehicle comprising an engine 15 provided as a drive source for driving the rear wheel 12 and a seat 16 provided between the front wheel 11 and the rear wheel 12 and on which the occupant sits. It is.

The steering system 13 includes a front fork 22 fixed to a lower portion of a steering stem (not shown) that is steerable on a vehicle body frame 21, and left and right handles (left handle) that are provided on an upper portion of the steering stem and are operated by a passenger. 23 is the main element.
The rear wheel suspension system 14 includes a swing arm 26 that extends rearward from the lower portion of the vehicle body frame 21 and supports the rear wheel 12 at the rear end portion, and a rear cushion unit that is passed between the rear end portion of the swing arm 26 and the vehicle body frame 21. 27 is the main element.

The vehicle body 30 includes a vehicle body frame 21 and a vehicle body cover 31. The vehicle body frame 21 is covered with the vehicle body cover 31. The vehicle body cover 31 includes a front cover portion 33 that covers the front portion of the vehicle body 30, a handle cover portion 35 that covers the periphery of the handle 23 above the front cover portion 33, and a rear cover portion 34 that covers the lower portion of the seat 16. Become. A headlight 36 is attached to the handle cover portion 35.

Next, the configuration and the like of the front cover part will be described.
As shown in FIG. 2, the front cover portion 33 includes a front cover 41 and a main frame cover 42 that lines the front cover 41 from the rear of the vehicle and covers the top of the main frame 52 that is a component of the vehicle body frame 21. The left and right main frame side covers 43L and 43R cover the left and right sides of the main frame 52.

When the portions covering the front of the occupant's feet are

leg shields

40L and 40R, the upper portions of the leg shields 40L and 40R are configured by a pair of left and right extending portions of the front cover 41 and the main frame cover 42. The lower portions of 40L and 40R are formed in a plate shape by the front cover 41.

The upper left and right ends of the main frame cover 42 are fastened to the front cover 41 by upper

cover fastening members

124 and 124, respectively. The left and right sides of the main frame cover 42 are fastened to the front cover 41 by lower

cover fastening members

86, 86, 109 and 109. The lower

cover fastening members

86, 86, 109, 109 are arranged in the vicinity of the left and right second traveling

wind outlets

47L, 47R. The lower

cover fastening members

109 and 109 are fastened together with left and right front turn signals (only the left front turn signal 44L is shown). The main frame cover 42 is fastened to the main frame 52 side by main frame

cover fastening members

75 and 75.

The left and right first traveling

air outlets

46L and 46R are provided at the upper end of the main frame cover 42, and the left and right second traveling

air outlets

47L and 47R are provided at the middle portion of the main frame cover 42 in the height direction. Left and

right openings

48L and 48R are provided in the main frame cover 42 between the left and right second traveling

wind outlets

47L and 47R.

The engine 15 is disposed below the main frame 52. The engine 15 is discharged from the main body 58 having a crankcase 56 and a cylinder portion 57 extending from the crankcase 56, an intake system 59 for supplying air-fuel mixture to the main body 58, and the main body 58. The main element is an exhaust system (not shown) that guides exhaust gas.

Referring also to FIG. 1, most of the intake system 59 and the cylinder part 57 are covered with the main frame cover 42 and the main frame side covers 43L and 43R. The left and right main frame side covers 43L and 43R are each opened with a substantially triangular triangular opening (only the left triangular opening 49L is shown) in side view, and the heat discharged from the engine 15 is transferred to the main frame side covers 43L and 43R. Release outward.

The rear cover portion 34 extends rearward of the vehicle so as to be continuous with the rear end of the main frame cover 42, and is continuous with the center cover 61 covering the lower portion of the front portion of the seat 16 and the rear end of the main frame side cover. It consists of left and right rear side covers (only the left rear side cover 62L is shown) extending rearward of the vehicle.
A front fender 65 is attached to the front fork 22 above the front wheel 11, and a rear fender 66 is attached to the rear portion of the vehicle body frame 21 that extends from above the rear wheel 12 to the rear.

Left and right front turn signals are attached to the front cover 41, and left and right rear turn signals (only the left rear turn signal 45L is shown) are attached to the rear fender 66.

Next, the structure of the air cleaner and its peripheral part will be described.
As shown in FIG. 3, the vehicle body frame 21 includes a head pipe 51 and a main frame 52 that extends rearward and downward from the head pipe 51. The head pipe 51 is a member that supports the steering system (FIG. 1, reference numeral 13) so as to be steerable.

An air cleaner 71 is attached to the main frame 52 below the main frame 52 and behind the head pipe 51 to filter out the outside air supplied to the engine (reference numeral 15 in FIG. 1) and remove foreign matter such as dust. An air intake opening 72 for taking in outside air is provided in the upper part of the air cleaner 71.

The upper part of the air cleaner 71 and the main frame 52 is covered with the main frame cover 42, and the side of the main frame 52 is covered with the main frame side covers 43L and 43R.

Openings

48L and 48R (only the left opening 48L is shown in FIG. 3) through which the outside air supplied to the air cleaner 71 passes are opened in the upper part of the main frame cover 42.

Inner walls

76L and 76R (only the left inner wall 76L is shown in FIG. 3) are extended from the periphery of the

openings

48L and 48R toward the front of the vehicle.

The throttle cable 78 is routed along the inner surface of the main frame cover 42 above the

openings

48L and 48R of the main frame cover 42 (only the left opening 48L is shown in FIG. 3). The throttle cable 78 is a member that is passed between a right handle provided in the steering system 13 and an intake system 59 on the vehicle body side, and the amount of deflection thereof is changed by a handle operation.

In this embodiment, the main frame cover covers the upper part of the main frame, but the main frame cover may extend downward to the side of the main frame. Also, the main frame cover and the main frame side cover can be integrated.

4 to 8, the details of the inner wall extending from the opening to the front of the vehicle will be described.
As shown in FIG. 4, the

openings

48L and 48R opened in the main frame cover 42 include a pair of a left opening 48L and a right opening 48R. The left and

right openings

48L and 48R partially overlap the main frame 52 in plan view.

Inner wall portions

76L and 76R extend forward from the

openings

48L and 48R, respectively.

The air opening 71 of the air cleaner 71 is disposed in front of the left opening 48L so that it faces the vehicle rear.

Inner wall portions

76L and 76R extending from

openings

48L and 48R have

cutout portions

77L and 77R in which portions on the main frame side are cut out. The details of the notch will be described with reference to the next figure.

As shown in FIG. 5, a notch 77R in which a portion on the main frame 52 side is notched is formed in the inner wall 76R extending from the opening 48R. By avoiding interference between the main frame 52 and the inner wall portion 76R and applying outside air introduced from the opening to the main frame 52, movement of water, dust, or the like to the air cleaner side can be suppressed.

4,

inner walls

76L and 76R are provided in the

openings

48L and 48R, and

notches

77L and 77R are formed at portions of the

inner walls

76L and 76R on the main frame 52 side. By cutting out the portions on the main frame 52 side of the

inner wall portions

76L and 76R, the left and

right openings

48L and 48R can be arranged close to the center in the vehicle width direction. Accordingly, the left and

right openings

48L and 48R can be compactly arranged in the main frame cover 42, and the appearance around the

openings

48L and 48R can be enhanced. Further, since the path of the outside air can be structured as a maze by the

cutout portions

77L and 77R of the inner wall portion and the main frame 52, the waterproofness and dustproofness can be further enhanced.

As shown in FIG. 6, the left inner wall portion 76 L includes a ceiling portion 81, an inner inner wall portion 82 that extends downward from an end portion on the side close to the vehicle width center of the ceiling portion 81, and a vehicle width center of the ceiling portion 81. The outer wall 83 extends downward from the end on the far side, and the bottom 84 passes between the lower end of the inner inner wall 82 and the lower end of the outer wall 83.

In the drawing, the notch 77L is formed from the inner inner wall 82 to the bottom 84, and avoids interference with the main frame 52.
The right inner wall part is provided symmetrically with respect to the center line in the vehicle width direction, and the structure is the same except that the left inner wall part is different from the left and right direction, and the description is omitted.

As shown in FIG. 7, when the vehicle is viewed from the side, a front portion 93 positioned in front of the middle portion 91 in the longitudinal direction of the vehicle is positioned above the main frame cover 42, and rearward of the middle portion 91. A step portion 95 formed in a step shape such that the rear portion 94 is positioned below is integrally provided. The step portion 95 is provided with the opening portion 48R described above.

As shown in FIG. 8, when the opening 48 R is viewed along the inner wall 76 R of the main frame cover, the ceiling 81 of the inner wall 76 R extends longer in front of the vehicle than the bottom 84 where the notch 77 is formed. ing.
By providing such an inner wall portion 76R, it is possible to prevent foreign matters such as rainwater entering from the opening 48R from entering the intake opening (FIG. 6, reference numeral 72) of the air cleaner (FIG. 6, reference numeral 71). .

Next, the positional relationship between the opening of the main frame cover and the intake opening of the air cleaner will be described.
As shown in FIG. 9, the intake opening 72 has an upper surface 101, an inner surface 102 that extends downward from an end of the upper surface 101 near the vehicle width direction center side, and a side farther to the vehicle width direction center side of the upper surface 101. The outer surface 103 extends downward from the end of the inner surface, and the bottom surface 104 passes between the inner surface 102 and the outer surface 103.

The left opening 48L includes an upper surface 111, an inner surface 112 extending downward from an end of the upper surface 111 close to the center in the vehicle width direction, and an end of the upper surface 111 on the side far from the center in the vehicle width direction. And an outer surface 113 extending downward from the inner surface 112 and a bottom surface 114 passing between the inner surface 112 and the outer surface 113. The upper surface 101 of the intake opening 72 is disposed at a higher position than the lower surface (bottom surface 114) of the left opening 48 L of the main frame cover 42.

That is, the opening 48L and the intake opening 72 are arranged so as to overlap in the height direction. In the figure, reference numeral 202 denotes a region overlapping in the vertical direction. In addition, the opening 48L and the intake opening 72 are arranged so as to overlap in the vehicle width direction. In the figure, 201 is an area where the end of the opening 48L and the end of the intake opening 72 overlap. In the embodiment, the overlapping region is on the line, but the overlapping region includes the line. If the opening 48 L and the intake opening 72 are arranged so as to overlap in the height direction and the vehicle width direction, the outside air that has entered from the opening 48 L is smoothly guided to the intake opening 72. As a result, the intake resistance can be reduced.

Referring also to FIG. 6, the upper surface 111 of the left opening 48L is connected to the ceiling 81, and similarly, the inner surface 112 of the left opening 48L is connected to the inner inner wall 82, and the outer surface 113 is connected to the outer wall 83. The bottom surface 114 is connected to the bottom 84.

The right intake opening is formed symmetrically with the left intake opening with respect to the center line in the vehicle width direction, and has the same structure and will not be described. The right opening is formed symmetrically with the left opening with respect to the center line in the vehicle width direction, and has the same structure and will not be described.

4, the side surface (inner surface 102) closer to the vehicle body center of the left and right side surfaces of the intake opening 72 in a plan view of the vehicle is closer to the vehicle body center side than the side surface (outer surface 113) farther from the vehicle body center of the opening 48L. It is placed at a position offset to.

That is, the intake opening 72 is disposed so as to overlap the opening 48L in plan view. If the intake opening 72 and the opening 48L are arranged so as to overlap in a plan view of the vehicle, the detour of the outside air that has entered from the opening 48L is reduced, and the intake opening 72 is smoothly guided. As a result, the intake resistance can be reduced.

Next, a guide member for restricting the movement of the throttle cable will be described.
As shown in FIG. 10, a stay member 121 extends from the main frame 52 to the left and right in the vehicle width direction, and the main frame cover 42 is fastened to the stay member 121 via a fastening member.

A guide for restricting the movement range of the throttle cable 78 by surrounding the wiring / pipe (throttle cable 78) around the main frame 52 in front of the vehicle from the step 95 of the main frame cover 42 and above the main frame 52. A member 123 is provided.

Next, the effect | action of the inner wall part extended from the opening part is demonstrated.
In FIG. 11, it is the figure which looked at the opening part 48L and the intake opening 72 by planar view. In the figure, the alternate long and short dash line 131 indicates the center line in the vehicle width direction, and the

cross hatch portions

132a and 132b indicate the line of sight when viewing the direction from the opening 48L to the intake opening 72 at the height of the opening 48L.

As shown in the comparative example of FIG. 11A, when the inner wall portion is not provided in the opening 48L, the intake opening 72 of the air cleaner can be seen.
As shown in the embodiment of FIG. 11B, when the inner wall 76L is provided in the opening 48L, the intake opening 72 is blocked by the inner wall 76L, and it is difficult to see the intake opening 72 of the air cleaner. .
Thus, since the inner wall 76L is extended from the opening 48L to the front side of the vehicle, the vehicle appearance can be further enhanced around the opening 48L without impairing the vehicle appearance.

The operation of the saddle riding type vehicle described above will be described next.
In FIG. 7, a main frame cover 42 is integrally provided with a stepped portion 95 that is located at the front with the intermediate portion 91 as the boundary, and the rear is positioned with the lower portion, and the stepped portion 95 has

openings

48L and 48R (48R). Only shown in FIG. 7).
Since the upper surface 136 of the main frame cover 42 behind the step portion 95 is positioned below, it is possible to easily straddle the main frame cover 42 when a passenger gets on and off. As a result, boarding / exiting ability can be improved.

Further, since the upper surface 135 of the main frame cover 42 in front of the step portion 95 is located above the upper surface 136 of the main frame cover 42 behind the step portion 95, the internal space 125 of the front portion 93 of the main frame cover 42 is Enlarged. When the internal space 125 becomes large, the degree of freedom of arrangement of the cable harness (for example, the throttle cable 126 in FIG. 10) is increased, and the optimum arrangement of the throttle cable 126 and the like in consideration of bending becomes possible.

A second embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 12, the opening portion opened in the main frame cover 42 includes a pair of a left opening portion 48L and a right opening portion 48R. The left and

right openings

48L and 48R partially overlap the main frame 52 in plan view.

Inner wall portions

176L and 176R extend from the

openings

48L and 48R in front of the vehicle, respectively.

The inner wall portion 176L of the left opening 48L includes a bottom portion 184L, an inner inner wall portion 182L and an outer wall portion 183L extending upward from the end portion of the bottom portion 184L. It is formed in a shape. In the figure, the air cleaner is omitted.

The inner wall portion 176R of the right opening 48R has a bottom portion 184R, an inner inner wall portion 182R and an outer wall portion 183R extending upward from the end portion of the bottom portion 184R, and an outer end in the vehicle width direction from the upper end of the inner inner wall portion 182R. The inner wall portion 176R is provided along the periphery of the opening except for the portion where the outer edge in the vehicle width direction of the upper edge of the opening is cut away. Thus, in Example 2, since there is no wall of the upper edge which becomes a ceiling part with respect to Example 1, circulation of outside air can be improved. In particular, an air cleaner (FIG. 3, reference numeral 71) disposed below the right opening 48R, and a fuel supply device (carburetor) provided on the intake pipe connecting the intake port of the engine (FIG. 1, reference numeral 15). Cooling performance can be improved by introducing and discharging outside air into the air.

As shown in FIGS. 13 to 17, a bent portion 186 that is bent upward is provided at the end of the bottom portion 184L of the left inner wall portion 176L. The bent portion 186 has a structure that prevents rainwater from entering. Even if the bent portion 186 is provided, since the ceiling of the left opening 48L is eliminated, it is possible to reduce the substantial influence on the width of the left opening 48L and to reduce the necessary intake amount. It can be secured.
Further, left and

right cutout portions

177L and 177R are provided on the

bottom portions

184L and 184R of the left and right

inner wall portions

176L and 176R, respectively.

The right notch 177R is notched larger than the left notch 177L. The left notch 177L is provided with a bent portion 186 that bends upward to prevent interference with the main frame 52, and the left notch 177L is formed smaller than the right notch 177R.

By providing the

notches

177L and 177R in which the portions on the main frame 52 side of the

inner walls

176L and 176R are provided, the left and

right openings

openings

48L and 48R can be enhanced. Moreover, since the path of the outside air can be formed into a maze structure by the

notches

177L and 177R of the inner wall portion and the main frame (FIG. 12, reference numeral 52), waterproofness and dustproofness can be further improved.
An extending portion 187 including an inner inner wall portion 182R and an upper wall portion 181 which are components of the inner wall portion 176R provided in the left opening is provided integrally with the main frame cover 42.

In FIG. 16, a step portion 188 is provided at a lower portion of the left outer wall portion 183L, and the step portion 188 widens the interval between the inner inner wall portion 182L and the outer wall portion 183L.

As described above, the second embodiment is different from the first embodiment in that the shape and the like of the inner wall portion are different, but the structure and arrangement of the motorcycle engine, the main frame, and the intake system other than the shape of the inner wall portion are the same. The structure is the same as that of the first embodiment, and a description thereof is omitted.

Although the present invention is applied to a motorcycle in the embodiment, it can also be applied to a tricycle and can be applied to a general vehicle.

Industrial applicability

The present invention is suitable for motorcycles.

DESCRIPTION OF SYMBOLS 10 ... Saddle type vehicle (motorcycle), 13 ... Steering system, 42 ... Main frame cover, 48L, 48R ... Left and right openings, 51 ... Head pipe, 52 ... Main frame, 71 ... Air cleaner, 72 ... Intake opening, 76L, 76R ... inner wall part, 95 ... step part, 123 ... guide member, 186 ... bent part.

Claims

A head pipe that supports the steering system in a freely steerable manner;
A main frame extending rearward and downward from the head pipe;
An air cleaner disposed below the main frame and behind the head pipe;
A main frame cover that covers at least an upper side and a side of the air cleaner and the main frame, and has an opening through which outside air supplied to the air cleaner passes;
A straddle-type vehicle comprising:
The main frame cover is integrally provided with a step portion formed such that the front portion is located above the middle portion in the longitudinal direction and the rear portion is located below the middle portion in the longitudinal direction. The straddle-type vehicle, wherein the step is provided with the opening.
The straddle-type vehicle according to claim 1, wherein an intake opening for taking in outside air is provided in the air cleaner, and the main frame cover includes an inner wall portion extending inwardly from the periphery of the opening portion.
The opening includes a pair of a left opening and a right opening, and the left and right openings are in plan view and at least a part of the opening overlaps the main frame, and the inner wall is formed on the main frame. The straddle-type vehicle according to claim 2, wherein the facing portion is cut out.
The straddle-type vehicle according to claim 1, wherein the opening portion overlaps with an intake opening of the air cleaner in a vertical direction in a side view.
The straddle-type vehicle according to claim 1, wherein the opening portion overlaps with an intake opening of the air cleaner in a vehicle width direction in a plan view.
6. The apparatus according to claim 1, further comprising a guide member that is positioned in front of the stepped portion and provided at an upper portion of the main frame and that limits a moving range of the wiring / piping. Saddle riding type vehicle.
The main frame cover includes an inner wall portion extending from a lower edge of the opening, and a bent portion that is bent upward is provided at an inner side end portion of the inner wall portion. The straddle-type vehicle according to claim 1, wherein