JP6691567B2 - Air cleaner device for saddle type vehicle - Google Patents

Description

  The present invention relates to the structure of an air cleaner device for a saddle type vehicle.

In order to improve the vibration control performance of the air cleaner device, the inner surface of the air cleaner cover is provided with rib-shaped protrusions that are provided at a substantially right angle to the extending direction of the ridges and valleys formed on the flat surface. The obtained structure is shown in, for example, Patent Document 1 below.
In a structure in which a rib-shaped projection is provided on the inner surface of the air cleaner cover as shown in Patent Document 1 below, when the intake air sucked from the outside air intake port of the air cleaner cover reaches the element from the unpurified chamber, the air cleaner cover The rib-shaped projections formed on the inner surface of the cylinder may interfere with each other, and the intake efficiency may decrease.
Therefore, there is a demand for a structure of the air cleaner device that does not reduce the intake efficiency while improving the vibration damping performance of the air cleaner device.

JP, 2014-058881, A (Drawing 4, Drawing 5, Drawing 8, and Drawing 9)

  The present invention has been made in view of the above-mentioned conventional art, and can suppress the vibration of the walls of the air cleaner cover and the air cleaner case, reduce the noise, and reduce the intake efficiency of an air cleaner device for a saddle type vehicle. The challenge is to provide.

In order to achieve the above object, the present invention provides
An air cleaner main body whose interior is partitioned into an unpurified chamber and a clean chamber via an air cleaner element between the air cleaner case and the air cleaner cover, and is attached to the air cleaner cover so as to communicate with the unpurified chamber, and forwardly. An air cleaner device for a saddle-ride type vehicle, which is equipped with an intake duct in which an air inlet is formed, and is attached to a swing type power unit,
The air cleaner cover has an outer protruding rib provided on at least an outer surface of an upper portion and an inner protruding rib provided on an inner surface of at least a lower portion, and is located at a vehicle height position where the air introduction port is formed. Of the outer protruding ribs and the inner protruding ribs, only the outer protruding ribs are provided, and the outer protruding ribs provided on the outer surface of the air cleaner cover are provided on the outer side of the vehicle width direction and the side surface when the vehicle is stopped. An air cleaner device for a straddle-type vehicle, characterized in that they overlap with each other and are located inside thereof .

According to the air cleaner device for the straddle-type vehicle having the above configuration,
Since the air cleaner cover is provided with outer and inner ribs, it is possible to suppress vibrations of the vehicle when the vehicle is running or vibrations of the air cleaner cover and the wall of the air cleaner case caused by intake of outside air and supply of combustion air. Can be reduced. Further, since only the outer protruding rib is provided at the vehicle height position where the air inlet of the air cleaner cover is provided, the inner protruding rib interferes with the intake air that has passed through the air inlet and flowed into the air cleaner cover. In this way, a decrease in intake efficiency is prevented.

Further, even when the outer protruding rib is provided on the outer surface of the air cleaner cover, the outer protruding rib is covered with the vehicle body cover in a side view and is not visually recognized, so that the appearance can be improved.

In the above configuration,
A lower end portion of the outer protruding rib provided on the outer surface of the air cleaner cover may be formed on an upper side along a lower end edge of the vehicle body cover on an outer side in the vehicle width direction.
According to its configuration,
Since the lower end portion of the outer protruding rib is formed on the upper side along the lower edge of the vehicle body cover, it is possible to efficiently make the outer protruding rib difficult to visually recognize in a side view.

In the above configuration,
The upper ends of the inner protruding ribs provided on the inner surface of the air cleaner cover may be formed along the lower ends of the outer protruding ribs.
According to its configuration,
Since the upper ends of the inner protruding ribs provided on the inner surface of the air cleaner cover are formed along the lower ends of the outer protruding ribs, the entire air cleaner cover can be reinforced for damping on average, and The air introduced from the air introduction port can be guided so as to be guided to the air cleaner element, and the intake efficiency can be improved.

In the above configuration,
The connecting tube and the outside air inlet duct may be arranged above a lower end portion of the outer protruding rib.
According to the configuration, the intake flow from the outside air inlet duct to the connecting tube through the air cleaner element along the smooth inner surface of the air cleaner cover above the lower end portion of the outer protruding rib, that is, above the upper end portion of the inner protruding rib. Is formed, and the intake efficiency can be improved.

In the above configuration,
The air cleaner element is located in the first region when the upper portion of the inner protruding rib is the boundary and the upper portion of the unpurified chamber is the first region and the lower portion of the unpurified chamber is the second region. An area may be larger than an area located in the 2nd field, and the outside air inlet duct may be arranged in the 1st field.
According to its configuration,
Since the air cleaner element has a larger area in the first region without the inner protruding rib above the upper end of the inner protruding rib, and the outside air inlet duct is also arranged in the first region without the inner protruding rib, the intake air intake The interference of the inner protruding rib with the flow is small, and the intake efficiency can be improved.

In the above configuration,
The entire outer protruding rib may be covered with a vehicle body cover on the outer side in the vehicle width direction so as not to be seen from the outside in a side view in the entire swing range of the swing type power unit.
According to its configuration,
In the entire swing range of the swing type power unit, the outer protruding ribs are covered with the vehicle body cover in a side view and are not visually recognized, so that the appearance can be improved.

According to the air cleaner device for a straddle-type vehicle of the present invention,
Since the air cleaner cover is provided with outer and inner ribs, it is possible to suppress vibrations of the vehicle when the vehicle is running or vibrations of the air cleaner cover and the wall of the air cleaner case caused by intake of outside air and supply of combustion air. Can be reduced. Further, since only the outer protruding rib is provided at the vehicle height position where the air inlet of the air cleaner cover is provided, the inner protruding rib interferes with the intake air that has passed through the air inlet and flowed into the air cleaner cover. In this way, a decrease in intake efficiency is prevented.
Further, even when the outer protruding rib is provided on the outer surface of the air cleaner cover, the outer protruding rib is covered with the vehicle body cover in a side view and is not visually recognized, so that the appearance can be improved.

FIG. 1 is a schematic left side view of a motorcycle equipped with an air cleaner device for a saddle-ride type vehicle according to an embodiment of the present invention, with front and rear wheels grounded and stopped. FIG. 2 is a top view of the air cleaner device taken along the line II-II in FIG. 1. FIG. 3 is a left side view (outside view) of the air cleaner main body taken along the line III-III in FIG. 2 with the front and rear wheels grounded and stopped as shown in FIG. 1, mainly on the left side (outside view) of the air cleaner cover. ) Is indicated. FIG. 4 is a right side view (inside view) of the air cleaner cover in the same state as in FIG. 3, taken along the line IV-IV in FIG. 2. FIG. 5 is a bottom cross-sectional view of an intake duct and an outside air inlet duct of an air cleaner cover, taken along the line V-V in FIG. 3.

An air cleaner device for a straddle-type vehicle according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.
It should be noted that the directions such as front, rear, left, right, up, and down in the description and claims of the present specification refer to a swing type power unit (hereinafter, simply referred to as “power unit”) 3 including an air cleaner device for a saddle type vehicle according to the present embodiment. , The direction of the vehicle when mounted on the vehicle shall be obeyed. In the present embodiment, the vehicle is a saddle riding type vehicle, and is specifically a scooter type motorcycle (hereinafter, simply referred to as “motorcycle”).
Further, in the figure, arrow FR indicates the front of the vehicle, LH indicates the left side of the vehicle, RH indicates the right side of the vehicle, and UP indicates the upper side of the vehicle.

1 to 5 relate to an embodiment of the present invention. FIG. 1 is a left side view of a motorcycle 1 of the present embodiment, in which front and rear wheels 16 and 17 are in contact with ground and are in a stopped state. Show.
In the motorcycle 1 ("saddle-ride type vehicle" in the present invention) 1 of the present embodiment, a vehicle body front portion 1A and a vehicle body rear portion 1B are connected via a low floor portion 1C, and form a vehicle body skeleton. The frame 2 generally includes a down tube 21 and a main pipe 22.
That is, the down tube 21 extends downward from the head pipe 20 of the vehicle body front portion 1A, the down tube 21 bends horizontally at the lower end, extends rearward under the floor portion 1C, and is connected in the vehicle width direction at the rear end. A pair of left and right main pipes 22 are connected via a frame 23, and the main pipe 22 forms an inclined portion 22a extending obliquely rearward and upward from the connection portion, and the upper portion of the inclined portion 22a is further bent to be substantially horizontal rearward. To form a horizontal portion 22b.

A storage box 11 and a fuel tank 12 are supported between the pair of main pipes 22 in the front-rear direction, and an occupant seat 13 is arranged above the storage box 11 and the fuel tank 12 so as to cover them.
On the other hand, in the front portion 1A of the vehicle body, a handle 14 is pivotally supported by the head pipe 20, and a handle 14 is provided above the front pipe 15. A front fork 15 extends downward and a front wheel 16 is pivotally supported at a lower end thereof.

  In the vehicle body front portion 1A, the vertical direction portions of the head pipe 20 and the down tube 21 are covered from the front and back by the front cover 1a and the leg shield 1b, and in the floor portion 1C, the front and rear direction portions of the down tube 21 are covered by the floor cover 1c. In the vehicle body rear portion 1B, the left and right and the rear of the main pipe 22 are covered by the body cover 1d.

The power unit (“swing type power unit” in the present invention) 3 is a water-cooled SOHC type internal combustion engine 4 having a single-cylinder four-stroke cycle at its front part, and the cylinder axis of the cylinder is largely tilted to a substantially horizontal state. In this posture, the vehicle body frame 2 is supported so as to be vertically swingable.
That is, the power unit support bracket 25 to the inclined portion 22a of the main pipe 22 is protruded backward, the path Wayuni' bets 3 is vertically swingably connected to and supported via a link member 26 to the power unit support bracket 25. The link member 26 is connected to the vehicle body frame 2 via a pivot shaft 27 that connects the power unit support bracket 25 in the vehicle width direction. The power unit 3 swings around the pivot shaft 27.
That is, the motorcycle 1 of the present embodiment adopts the upper link support structure of the power unit 3, and as a result, a space provided with the catalyst device 9 below the front portion of the power unit 3 can be obtained.

In the power unit 3, a belt type continuously variable transmission 5 is configured from the internal combustion engine 4 to the rear, and a rear wheel 17 is provided on a rear axle 51a which is an output shaft of a reduction gear mechanism 51 provided at the rear portion.
A rear cushion 18 is interposed between the rear portion of the power unit 3 having the reduction gear mechanism 51 and the horizontal portion 22b at the rear portion of the main pipe 22.

The internal combustion engine 4 rotatably supports the crankshaft 31 in the unit case 30 in the vehicle width direction, that is, the left-right direction, and the cylinder block 41, the cylinder head 42, and the head cover 43 are sequentially stacked in front of the unit case 30. The cylinder axis is fastened substantially horizontally and is fastened.
1 shows the left unit case 30L which is a transmission case for housing the belt type continuously variable transmission 5 in the unit case 30, but the belt type continuously variable transmission 5 itself is housed inside the left unit case 30L. Not shown.

In the upper part of the power unit 3, the intake pipe 45 extends from the intake port 44 inlet of the upper part of the cylinder head 42 of the internal combustion engine 4 which is largely inclined forward, and is curved rearward, and the throttle body 46 connected to the intake pipe 45 is connected to the cylinder block. An air cleaner device 7 located above 41 and connected to a throttle body 46 via a connecting tube 47 is provided above the belt type continuously variable transmission 5. An injector 48 for injecting fuel toward the intake port 44 is attached to the intake pipe 45.
Further, an exhaust pipe extending downward from the outlet of the exhaust port 49 at the lower part of the cylinder head 42 is bent rearward through the catalyst device 9 and is biased to the right to extend rearward to connect to a muffler (not shown) on the right side of the rear wheel 17. To be done.

FIG. 2 is a top view of the air cleaner device 7 taken along the line II-II in FIG.
3 is a left side view (outside view) of the air cleaner main body 70 taken along the line III-III in FIG. 2 in a state where the front and rear wheels 16 and 17 are in contact with the ground as shown in FIG. The left side surface (outer surface) of the air cleaner cover 72 is shown in FIG.
FIG. 4 is a right side view (inside view) of the air cleaner cover 72 in the same state as FIG. 3, taken along the line IV-IV in FIG.
FIG. 5 is a bottom cross-sectional view of the intake duct 80 and the outside air inlet duct 76 of the air cleaner cover 72 taken along the line VV in FIG.

As shown in FIG. 2, in the air cleaner device 7, the air cleaner body 70 includes an air cleaner case 71 on the vehicle center side, an air cleaner cover 72 fitted to the air cleaner case 71 from the outside of the vehicle, and a clean chamber 73 and an uncleaned room 73 sandwiched therebetween. It is composed of an air cleaner element 75 that defines a purification chamber 74 and is fastened to each other.
At the front part of the air cleaner cover 72, an air intake duct 80 formed so as to open to the front left side and communicate with the unpurified chamber 74 is attached (see FIG. 5).

That is, the air cleaner element 75 is provided in the air cleaner main body 70, and the inside of the air cleaner main body 70 is partitioned by the air cleaner element 75 arranged in a flat plate with its surface oriented in the left-right direction.
An unpurified chamber 74 is formed inside the air cleaner cover 72 on the left side of the air cleaner element 75, and an outside air inlet duct 76 connected to the intake duct 80 for sucking outside air into the unpurified chamber 74 is formed in front of the air cleaner cover 72. Are formed in the front-back direction. The outlet opening 76a, which is the downstream end of the outside air inlet duct 76, opens rearward in the unpurified chamber 74 (see FIGS. 4 and 5).

  A clean chamber 73 is formed inside the air cleaner case 71 on the right side of the air cleaner element 75, and an intake air outlet 71a to which the upstream end of a connecting tube 47 connected to the internal combustion engine 4 is connected is formed on the front side of the air cleaner case 71. A connecting tube 47 for supplying the purified intake air in the clean chamber 73 to the internal combustion engine 4 via the throttle body 46 is attached to the front side. The downstream end on the intake downstream side of the connecting tube 47 is connected to the throttle body 46 (see FIG. 1).

  As shown in FIG. 5, an intake duct 80, which is formed as a separate member, is attached to the front of the air cleaner cover 72 to prevent foreign matter from entering and direct the air to the left without directly introducing the outside air from the front. Air is introduced from the opened air introduction port 80a, turned to the rear, and sent as intake air to the rear of the unpurified chamber 74 by the outside air inlet duct 76 formed in the air cleaner cover 72.

  As shown in FIG. 3, the air cleaner element 75 facing the unpurified chamber 74 is provided in the base plate portion 75b held between the air cleaner case 71 and the air cleaner cover 72, and the base plate portion 75b. And a filtering part 75a loaded in the frame part 75c. When the intake air, which is the inhaled outside air, passes from the unpurified chamber 74 to the clean chamber 73 in the filtering part 75a, dust and the like in the intake air Is filtered and the intake air is purified.

  The air cleaner cover 72 has at least an outer protruding rib 77 (see FIG. 3) provided on the outer surface of the upper portion and an inner protruding rib 78 (see FIG. 4) provided on the inner surface of at least the lower portion. As shown in FIGS. 3 and 4, at the vehicle height position where the air introduction port 80a of the intake duct 80 is formed, that is, at the height position of the outlet opening 76a of the outside air inlet duct 76, the outer protruding ribs 77 and Of the inner protruding ribs 78, only the outer protruding portions 77 are provided.

In this way, since the air cleaner cover 72 is provided with the outer protruding ribs 77 and the inner protruding ribs 78, the vibration of the vehicle when the motorcycle 1 is running, or the air cleaner cover 72 that is generated due to intake of outside air or supply of combustion air Vibration of the wall of the air cleaner case 71 can be suppressed, and noise can be reduced.
Further, since only the outer protruding rib 77 is provided at the vehicle height position where the air introduction port 80a of the air cleaner cover 72 is provided, the inside of the intake air that has passed through the air introduction port 80a and flowed into the air cleaner cover 72 The protrusion ribs 78 do not interfere with each other, and the reduction of intake efficiency is prevented.
Therefore, the structure of the air cleaner device is such that the damping efficiency of the air cleaner is improved and the intake efficiency is not reduced.

Further, as shown in FIG. 1, the outer protruding rib 77 provided on the outer surface of the air cleaner cover 72 serves as a body cover (“body cover” in the present invention) 1d on the outer side in the vehicle width direction when the motorcycle 1 is stopped. It overlaps in side view and is located inside it.
Even if the unit swing type power unit 3 swings, the entire outer protruding rib 77 is covered with the body cover 1d on the outer side in the vehicle width direction so as not to be seen from the outside in the side view in the entire swing range.
As described above, in this embodiment, the inner protrusion rib 78 is not provided at the vehicle height position where the air introduction port 80a is provided in order to avoid interference with the intake air, and the outer protrusion rib 77 is provided with the air cleaner cover for vibration damping. Even when it is provided on the outer surface of 72, the outer protruding rib 77 is covered with the body cover 1d in a side view and is not visually recognized, so that the outer appearance can be improved without impairing the appearance.
Therefore, in the entire swing range of the power unit 3, the outer protruding rib 77 is covered with the body cover 1d in a side view and is not visually recognized, so that the appearance is improved.

  Further, as shown in FIG. 1, the lower end portion 77a of the outer protruding rib 77 provided on the outer surface of the air cleaner cover 72 is formed above the lower end edge 1da of the body cover 1d on the outer side in the vehicle width direction. There is. That is, in FIG. 3, the lower end portion 77a of the outer protruding rib 77 is arranged so that the rear part thereof rises obliquely in the front-rear direction, and the lower end edge 1da of the body cover 1d is located at the position shown by the chain double-dashed line in the figure. The rear protrusions 77 are arranged so as to be inclined rearward substantially parallel to the lower ends 77a. Below the lower end edge 1da of the body cover 1d, the inner protrusion ribs 78 are provided on the inner surface of the air cleaner cover 72 even if the outer protrusion ribs 77 are not provided. The rib 77 can be made difficult to be visually recognized in a side view.

As shown in FIG. 4, the upper end portion 78a of the inner protruding rib 78 provided on the inner surface of the air cleaner cover 72, which is arranged so as to obliquely rise backward in the front-rear direction, is attached to the lower end portion 77a of the outer protruding rib 77. The air cleaner cover 72 can be reinforced on average to suppress vibrations.
Further, the air that has flowed from the air inlet 80a of the suction duct 80 through the outside air inlet duct 76 to the inner surface side of the air cleaner cover 72 from the outlet opening 76a, that is, the unpurified chamber 74 does not have the inner protruding rib 78 in the inflow direction. It is possible to guide the introduced air to the air cleaner element 75 evenly without being interfered with, and to improve the intake efficiency.

Further, as shown in FIG. 3, the connecting tube 47 and the outside air inlet duct 76 are arranged above the lower end portion 77 a of the outer protruding rib 77.
Therefore, along the smooth inner surface of the air cleaner cover 72 above the lower end portion 77a of the outer protruding rib 77, that is, above the upper end portion 78a of the inner protruding rib 78, from the outside air inlet duct 76, via the air cleaner element 75, and the connecting tube 47. The intake flow to the air is formed, and the intake efficiency can be improved.

In addition, as shown in FIG. 4, when the unpurified chamber 74 above the upper end portion 78a of the inner protruding rib 78 is the boundary and the unpurified chamber 74 below is the second region B, The area of the air cleaner element 75 located in the first area A is larger than the area of the second area B, and the outside air inlet duct 76 is located in the first area A.
Therefore, the air cleaner element 75 has a larger area in the first area A above the upper end portion 78a of the inner protruding rib 78 where there is no inner protruding rib 78, and the outside air inlet duct 76 also has the first protruding rib 78 which does not have the inner protruding rib 78. Since it is arranged in the region A, the interference of the inner protruding ribs 78 with respect to the flow of intake air is small, and intake efficiency can be improved.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and various modifications can be made within the scope of the present invention. For example, the power unit and the internal combustion engine of the present invention are not limited to motorcycles, and may be widely applied to other types of saddle type vehicles.
In addition, for convenience of description, the left and right arrangement of the device has been described according to the illustrated embodiment, but the present invention is not limited to this, and the left and right arrangement may be reversed.

DESCRIPTION OF SYMBOLS 1 ... Motorcycle ("saddle-type vehicle" in this invention) , 1d ... Body cover ("body cover" in this invention), 1da ... Bottom edge, 3 ... Power unit ("swing type power unit" in this invention) , 4 ... internal combustion engine, 5 ... belt type continuously variable transmission, 7 ... air cleaner device, 30 ... unit case, 31 ... crankshaft, 42 ... cylinder head, 44 ... intake port, 45 ... intake pipe, 46 ... throttle body, 47 ... Connecting tube, 70 ... Air cleaner body, 71 ... Air cleaner case, 71a ... Intake outlet, 72 ... Air cleaner cover, 73 ... Clean chamber, 74 ... Unpurified chamber, 75 ... Air cleaner element, 75a ... Filtration part, 75b ... Base plate part, 75c ... Frame part, 76 ... Outside air inlet duct, 76a ... Outlet opening, 77 ... Outer protruding rib, 77a ... Lower end part, 78 ... Inner protruding rib, 78a ... Upper end part, 80 ... Intake duct, 80 ... air inlet

Claims (6)

An air cleaner body (70) whose interior is partitioned into an unpurified chamber (74) and a clean chamber (73) via an air cleaner element (75) between the air cleaner case (71) and the air cleaner cover (72),
The swing type power unit (3) is provided with an intake duct (80) attached to the air cleaner cover (72) so as to communicate with the unpurified chamber (74) and having an air introduction port (80a) formed in the front thereof. In the air cleaner device (7) of the saddle type vehicle (1) attached to
The air cleaner cover (72) has an outer protruding rib (77) provided on at least the outer surface of the upper portion and an inner protruding rib (78) provided on the inner surface of at least the lower portion, and the air inlet ( Of the outer protruding rib (77) and the inner protruding rib (78), only the outer protruding rib (77) is provided at the vehicle height position where 80a) is formed ,
The outer protrusion rib (77) provided on the outer surface of the air cleaner cover (72) is positioned inside the vehicle body cover (1d) on the outer side in the vehicle width direction when viewed from the side when the vehicle is stopped. Air cleaner device for saddle type vehicles . The lower end portion (77a) of the outer protruding rib (77) provided on the outer surface of the air cleaner cover (72) is located above the lower end edge (1da) of the vehicle body cover (1d) on the outer side in the vehicle width direction. The air cleaner device for a saddle type vehicle according to claim 1 , wherein the air cleaner device is formed. An upper end portion (78a) of the inner protruding rib (78) provided on the inner surface of the air cleaner cover (72) is formed along a lower end portion (77a) of the outer protruding rib (77). The air cleaner device for a saddle-ride type vehicle according to claim 2 . The air cleaner for a saddle-ride type vehicle according to claim 3 , wherein the connecting tube (47) and the outside air inlet duct (76) are arranged above a lower end portion (77a) of the outer protruding rib (77). apparatus. With the upper end portion (78a) of the inner protruding rib (78) as a boundary, the unpurified chamber (74) above it is the first region (A), and the unpurified chamber (74) below it is the second region (B). ), The area of the air cleaner element (75) located in the first area (A) is larger than the area of the second area (B), and the outside air inlet duct (76) is The air cleaner device for a straddle-type vehicle according to claim 4 , wherein the air cleaner device is arranged in the first region (A). The entire outer protruding rib (77) is covered with the vehicle body cover (1d) on the outer side in the vehicle width direction so as not to be seen from the outside in a side view in the entire swing range of the swing type power unit (3). straddle-type vehicle of the air cleaner device according to any one of claims 1 to 4, characterized in.

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