Saddle-type vehicle

Abstract

This invention provides a saddle-type vehicle that allows for the placement of a sufficiently large air cleaner box on the outside of the main frame in the vehicle width direction while suppressing an increase in the vehicle width dimension. [Solution] In a saddle-type vehicle (1) having a head pipe (F1) that pivotally supports the steering mechanism of the front wheels (WF), a pair of left and right main frames (F2, F3) connected to the rear of the head pipe (F1), and an air cleaner box (30) that houses an air filter (36), the air cleaner box (30) is disposed on the outside in the vehicle width direction of the main frames (F2, F3). When viewed from the side of the vehicle body, at least a part of the air cleaner box (30) overlaps with the head pipe (F1). The air cleaner box (30) is disposed on the outside of one side in the vehicle width direction of the main frames (F2, F3), and functional components (21, 22) are disposed on the outside of the other side in the vehicle width direction of the main frames (F2, F3).

Description

Technical Field

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[0001] The present invention relates to a saddle-type vehicle, and more particularly to a saddle-type vehicle provided with an air cleaner box that houses an air filter for filtering outside air supplied to an internal combustion engine.

Background Art

[0002] Conventionally, in a saddle-type vehicle having a main frame that extends rearward and downward from a head pipe that pivotally supports a front-wheel steering mechanism, a part of an intake device for introducing outside air into an internal combustion engine is disposed at a position outside the vehicle width direction of a pair of left and right main frames. A saddle-type vehicle is known.

[0003] Patent Document 1 discloses a saddle-type vehicle in which an air cleaner box is disposed between a pair of left and right main frames, and a pair of left and right intake ducts for introducing outside air into the air cleaner box are disposed outside the vehicle width direction of the main frame.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] <00​​​The object of the present invention is to solve the problems of the prior art described above and to provide a saddle-type vehicle that can accommodate an air cleaner box with sufficient capacity on the outside of the main frame in the vehicle width direction while suppressing an increase in the vehicle width dimension. [Means for solving the problem]

[0007] To achieve the above objective, the present invention provides a saddle-type vehicle (1) having a head pipe (F1) that rotatably supports the steering mechanism of the front wheels (WF), a pair of left and right main frames (F2, F3) connected to the rear of the head pipe (F1), and an air cleaner box (30) that houses an air filter (36), wherein the first feature is that the air cleaner box (30) is disposed on the outside in the vehicle width direction of the main frames (F2, F3), and at least a part of the air cleaner box (30) overlaps with the head pipe (F1) when viewed from the side of the vehicle body.

[0008] Furthermore, a second feature is that the air cleaner box (30) is located on the outside of one side in the vehicle width direction of the main frame (F2, F3), and the functional components (21, 22) are located on the outside of the other side in the vehicle width direction of the main frame (F2, F3).

[0009] Furthermore, the air cleaner box (30) includes an intake duct (33) that introduces outside air from a front intake port (33a) and a cover member (31) that covers the intake duct (33) from the front. The third feature is that a guide member (60) is provided inside the cover member (31) that covers the intake port (33a) from the front and overlaps with the intake duct (33) in at least a portion of it when viewed from the side of the vehicle body.

[0010] Furthermore, the intake duct (33) has a fourth characteristic in that it is arranged to be inclined downwards towards the front when viewed from the side of the vehicle body.

[0011] Furthermore, a fifth feature is that an outlet (31b) is provided as a through-hole at a position closer to the front of the bottom of the cover member (31), and the guide member (60) is positioned between the intake port (33a) and the outlet (31b) of the intake duct (33). [Effects of the Invention]

[0012] According to the first feature, in a saddle-type vehicle (1) having a head pipe (F1) that pivotally supports the steering mechanism of the front wheels (WF), a pair of left and right main frames (F2, F3) connected to the rear of the head pipe (F1), and an air cleaner box (30) that houses an air filter (36), the air cleaner box (30) is disposed on the outside in the vehicle width direction of the main frames (F2, F3), and at least a part of the air cleaner box (30) overlaps with the head pipe (F1) when viewed from the side of the vehicle body. By arranging the air cleaner box in a position that overlaps with the head pipe in the front-rear direction, it is possible to effectively utilize the space around the head pipe and secure sufficient capacity for the air cleaner box while suppressing an increase in size in the vehicle width direction.

[0013] According to the second feature, the air cleaner box (30) is located on the outside of one side in the vehicle width direction of the main frame (F2, F3), and the functional components (21, 22) are located on the outside of the other side in the vehicle width direction of the main frame (F2, F3). By distributing the air cleaner box and functional components on both sides of the head pipe, it is possible to maintain the left-right weight balance of the saddle-type vehicle.

[0014] According to the third feature, the air cleaner box (30) includes an intake duct (33) that introduces outside air from a front intake port (33a) and a cover member (31) that covers the intake duct (33) from the front. Inside the cover member (31), a guide member (60) is provided that covers the intake port (33a) from the front and overlaps with the intake duct (33) in at least a portion when viewed from the side of the vehicle body. This makes it possible to prevent moisture, dust, etc. from entering the intake duct by the guide member.

[0015] According to the fourth feature, since the intake duct (33) is disposed to be inclined downward and forward when viewed from the side of the vehicle body, it is difficult for moisture or the like to enter the intake duct from the front, and it is easy to discharge it forward.

[0016] According to the fifth feature, a discharge port (31b) as a through-hole is provided at a position near the front of the bottom of the cover member (31), and the guide member (60) is disposed between the intake port (33a) of the intake duct (33) and the discharge port (31b). Therefore, the guide member suppresses the intrusion of moisture or the like into the intake duct, and it is possible to efficiently discharge the moisture or the like discharged forward from the intake port through the discharge port.

Brief Description of the Drawings

[0017] [Figure 1] It is a right side view of a motorcycle according to an embodiment of the present invention. [Figure 2] It is a partially enlarged view of FIG. 1. [Figure 3] It is a partially enlarged front view of a motorcycle. [Figure 4] It is a right side view showing a state where the cover member and the intake duct are removed from the motorcycle of FIG. 2. [Figure 5] It is a sectional view taken along the line V-V of FIG. 4. [Figure 6] It is a partially enlarged plan view of a motorcycle. [Figure 7] It is a sectional view taken along the line VII-VII of FIG. 3. [Figure 8] It is a partially enlarged view of FIG. 5. [Figure 9] It is a sectional view taken along the line IX-IX of FIG. 3.

Mode for Carrying Out the Invention

[0018] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a right side view of a motorcycle 1 according to an embodiment of the present invention. Further, FIG. 2 is a partially enlarged view of FIG. 1, and FIG. 3 is a partially enlarged front view of the motorcycle 1. The motorcycle 1 is a saddle-type vehicle that travels by transmitting the driving force of a power unit P, which integrally constitutes an internal combustion engine and a transmission, to a rear wheel WR.

[0019] At the front ends of a pair of left and right upper main frames F2 and lower main frames F3 that constitute the vehicle body frame F, a head pipe F1 that rotatably supports a steering stem (not shown) is fixed. Above and below the steering stem, a top bridge 6 and a bottom bridge 4 that support a pair of left and right front forks 2 are fixed. On the upper part of the top bridge 6, a steering handle 9 for steering the steering mechanism of the front wheel WF is attached. A rearview mirror 8 is attached to the steering handle 9. At the lower end of the front fork 2, the front wheel WF is rotatably supported. A front fender 3 that covers the upper part of the front wheel WF is attached to the front fork 2.

[0020] Below the lower main frame F2, a hanger frame F5 that supports the upper front part of the power unit P is connected. At the rear parts of the upper main frame F2 and the lower main frame F3, a rear frame F4 that supports a seat 12 is connected. The lower end of the rear frame F4 supports the lower rear part of the power unit P. The combustion gas of the power unit P is discharged from a muffler 16 on the right side in the vehicle width direction via an exhaust pipe 19. A cantilever-type swing arm 17 that rotatably supports the rear wheel WR is swingably supported by a pivot 18 provided at the rear part of the power unit P.

[0021] A fuel tank 11 is positioned above the upper main frame F2. In front of the head pipe F1 are a meter unit 7 supporting a pair of front flasher lamps 20 and a headlight 5. On the other hand, a rear cowl 13 supporting a taillight unit 14 and a rear fender 15 covering the rear upper part of the rear wheel WR are attached to the rear of the rear frame F4.

[0022] The motorcycle 1 according to this embodiment is characterized in that an air cleaner box 30, which houses an air filter for filtering outside air, is disposed on the right side in the vehicle width direction of the upper main frame F2 and the lower main frame F3. Furthermore, the air cleaner box 30 is disposed so that at least a portion of it overlaps with the head pipe F1 when viewed from the side of the vehicle body. This makes it possible to effectively utilize the space around the head pipe F1 and ensure sufficient capacity for the air cleaner box 30 while suppressing an increase in the vehicle width direction of the motorcycle 1. In addition, a regulator rectifier 21 and a horn 22 are disposed on the left side in the vehicle width direction of the upper main frame F2 and the lower main frame F3 as functional components. This makes it possible to maintain the left-right weight balance of the motorcycle 1 by distributing the air cleaner box 30 and functional components on both sides of the head pipe F1.

[0023] The air cleaner box 30 comprises a front casing 32 and a rear casing 35 that house the air filter, and a cover member 31 that covers the front part of the front casing 32. The cover member 31 is fixed to the front casing 32 by three fastening members 34. An intake passage 50, which is connected to a throttle body located below the fuel tank 11, is connected to the rear of the rear casing 35. The intake passage 50 curves over the upper main frame F2 and is guided into the vehicle body.

[0024] The front casing 32 is fitted with two intake ducts 33 that introduce outside air into the space formed by the front casing 32 and the rear casing 35. The front of the cover member 31 is fitted with an inlet member 37 which has four louvers 37b that are oriented vertically. The outside air intake port 37a is formed by multiple small polygonal shapes by connecting members that span between the louvers 37b, preventing foreign objects from entering the air cleaner box 30. The area from the fuel tank 11 to the front casing 32 is covered by a body cover 10 made of synthetic resin or the like.

[0025] Referring to Figure 2, the front surface of the inlet member 37 attached to the cover member 31 is inclined towards the rear with respect to the vertical. More specifically, the straight line L2 connecting the upper end 37U and the lower end 37L of the inlet member 37 has an inclination angle closer to the vertical than the axis L1 of the head pipe F1. Also, referring to Figure 3, in a front view of the vehicle body, the outer wall portion of the air cleaner box 30 in the vehicle width direction extends vertically downward from the top, and then inclined inward in the vehicle width direction from the midpoint of the vertical dimension and extends downward. On the other hand, the inner wall portion of the air cleaner box 30 in the vehicle width direction bulges inward in the vehicle width direction to a position that overlaps with the front fork 2, thereby increasing the capacity of the air cleaner box 30.

[0026] Figure 4 is a right side view showing the motorcycle 1 from Figure 2 with the cover member 31 and intake duct 33 removed. Figure 5 is a cross-sectional view along line VV in Figure 3, Figure 6 is a partially enlarged plan view of the motorcycle 1, and Figure 7 is a cross-sectional view along line VII-VII in Figure 3. The same reference numerals indicate the same or equivalent parts. Figure 6 shows the motorcycle with the body cover 10 removed.

[0027] The front casing 32 and rear casing 35, both made of thin synthetic resin sheets, are fastened together by a plurality of fastening members 36. The thick plate-shaped air filter 36 is supported by being sandwiched between the front casing 32 and the rear casing 35. An opening 32a is formed on the front surface of the front casing 32 into which an intake duct 33, made of rubber or the like, is inserted and fixed. The cylindrical intake duct 33 is arranged to be inclined downwards towards the front when viewed from the side of the vehicle body. This makes it difficult for moisture and other substances to enter the intake duct 33 from the front, and makes it easy to discharge them forward.

[0028] Furthermore, a guide member 60 made of a thin sheet of synthetic resin is provided inside the cover member 31. The guide member 60 covers the intake port 33a of the intake duct 33 from the front and is positioned so that at least a portion of it overlaps with the intake duct 33 when viewed from the side of the vehicle body. This guide member 60 makes it possible to more effectively suppress the intrusion of moisture, dust, etc. into the intake duct 33.

[0029] Referring to Figure 6, the air cleaner box 30, which has a shape that increases in width towards the rear, is positioned on the right side in the width direction of the upper main frame F2 and the lower main frame F3. In a plan view of the vehicle body, the upper main frame F2 and the lower main frame F3 partially overlap with the inner wall portion of the air cleaner box 30 in the width direction. Furthermore, as shown in Figure 7, the inner protrusion 35a of the air cleaner box 30 in the width direction protrudes inward from the right side position L3 of the front fork 2. This effectively utilizes the space behind the front fork 2 to increase the capacity of the air cleaner box 30.

[0030] Figure 8 is a partially enlarged view of Figure 5. Figure 9 is a cross-sectional view taken along line IX-IX in Figure 3. The same reference numerals indicate the same or equivalent parts. A first discharge hole 31a is formed as a through-hole in the bottom wall of the cover member 31a at a position towards the rear, and a second discharge hole 31b is formed as a through-hole at a position towards the front. The second discharge hole 31b is located in front of the guide member 60. In other words, the guide member 60 is positioned between the intake port 33a and the second discharge port 31b of the intake duct 33. This prevents moisture from entering the intake duct 33 with the guide member 60, and allows moisture discharged forward from the intake port 33 to be efficiently discharged from the second discharge port 31b. Furthermore, even if moisture enters behind the guide member 60 due to the pressure of the airflow, it can be efficiently discharged through the first discharge hole 31a, which is located towards the rear.

[0031] As described above, according to the air cleaner box structure of the present invention, the air cleaner box 30 is disposed on the outside in the vehicle width direction of the main frames F2 and F3 connected to the rear of the head pipe F1 of the motorcycle 1, and the air cleaner box 30 is configured such that at least a part of it overlaps with the head pipe F1 when viewed from the side of the vehicle body, so it is possible to make effective use of the space around the head pipe F1 and secure sufficient capacity for the air cleaner box 30 while suppressing an increase in the vehicle width direction of the motorcycle 1.

[0032] The form of the motorcycle, the form of the power unit, the shape and structure of the air cleaner box, the shape and structure of the intake duct, the number of intake ducts, the shape and structure of the main frame, the number of main frames, the type and number of functional components, the arrangement and number of exhaust ports, etc., are not limited to the above embodiment and can be modified in various ways. For example, the air cleaner box may be placed on the outside of the main frame on the left side in the vehicle width direction, and the functional components may be placed on the outside of the main frame on the right side in the vehicle width direction. The air cleaner box structure according to the present invention is not limited to motorcycles, but can be applied to various vehicles such as three-wheeled vehicles and four-wheeled vehicles. [Explanation of Symbols]

[0033] 1...Motorcycle (saddle-type vehicle), 21...Regulator rectifier (functional component), 22...Horn (functional component), 30...Air cleaner box, 31...Cover component, 31b...Second exhaust port (exhaust port), 33...Intake duct, 33a...Intake port, 36...Air filter, 60...Guide component, F1...Head pipe, F2...Upper main frame (main frame), F3...Upper main frame (main frame), WF...Front wheel

Claims

1. In a saddle-type vehicle (1) having a head pipe (F1) that pivotally supports the steering mechanism of the front wheels (WF), a pair of left and right main frames (F2, F3) connected to the rear of the head pipe (F1), and an air cleaner box (30) that houses an air filter (36), The air cleaner box (30) is located on the outer side in the vehicle width direction of the main frame (F2, F3), A saddle-type vehicle characterized in that, when viewed from the side of the vehicle body, at least a portion of the air cleaner box (30) overlaps with the head pipe (F1).

2. The air cleaner box (30) is located on the outside of one side in the vehicle width direction of the main frame (F2, F3). The saddle-type vehicle according to claim 1, characterized in that functional components (21, 22) are arranged on the outside of the other side in the vehicle width direction of the main frame (F2, F3).

3. The air cleaner box (30) includes an intake duct (33) that introduces outside air from the front intake port (33a) and a cover member (31) that covers the intake duct (33) from the front. The saddle-type vehicle according to claim 1 or 2, characterized in that a guide member (60) is provided inside the cover member (31) that covers the intake port (33a) from the front and overlaps with the intake duct (33) in at least a portion of it when viewed from the side of the vehicle body.

4. The saddle-type vehicle according to claim 3, characterized in that the intake duct (33) is arranged to be inclined downwards towards the front when viewed from the side of the vehicle body.

5. An outlet (31b) is provided as a through-hole at a position towards the front of the bottom of the cover member (31). The saddle-type vehicle according to claim 3, characterized in that the guide member (60) is disposed between the intake port (33a) and the exhaust port (31b) of the intake duct (33).

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