JP5854855B2 - Air cleaner device for saddle riding type vehicle - Google Patents

Description

  The present invention relates to an air cleaner device for a straddle-type vehicle.

2. Description of the Related Art Conventionally, as an air cleaner device for a saddle type vehicle, for example, an air cleaner device for a saddle type vehicle as disclosed in Patent Document 1 is known. The air cleaner device of the saddle riding type vehicle has a case body (71) having an opening and a case cover (72) covering the opening of the case body (71). An air cleaner case (51) in which an air cleaner element (52) is housed;
A connecting tube (17) for supplying the air purified by the air cleaner element (52) to the internal combustion engine (12);
And a resonator chamber (subchamber) (54) formed in the air cleaner case (51) and connected to the connecting tube (17).
The resonator chamber (54) includes a chamber body (74) formed integrally with the case body (71) and having one end opened, and a chamber lid (76) that closes the opening (77) of the chamber body (74). Yes.
The chamber lid (76) is integrally formed with a projecting portion (81) as a joint portion having an open communication passage (78), and a connecting tube (17) is formed in an annular groove (81a) provided in the projecting portion (81). A connecting hole (82) opened on the side surface of the sub-chamber is fitted into the sub-chamber (54) and the connecting tube (17). (The above, paragraph 0022 of the same publication)

Japanese Patent No. 4121392

In the above-described conventional air cleaner device for a saddle-ride type vehicle, the resonator chamber (54) includes a chamber body (74) and a chamber lid (76) that closes an opening (77) of the chamber body (74). Since the chamber lid (76) is provided with a communication path (78) with the connecting tube (17), in order to configure the sub-chamber chamber (54) that has a function as a resonator, A chamber lid (76) is required. Therefore, this conventional technique has a problem that the number of parts is increased and the assembly work accompanying the increase in the number of parts is complicated.
The problem to be solved by the present invention is to provide an air cleaner device for a straddle-type vehicle capable of reducing the number of parts and facilitating assembly work.

In order to solve the above problem, an air cleaner device for a saddle-ride type vehicle according to the present invention provides:
An air cleaner case that has an opening and a case cover that covers the opening of the case body, and in which an air cleaner element is housed;
A connecting tube communicating between the inside and outside of the case body to supply the air purified by the air cleaner element to the internal combustion engine;
In an air cleaner device for a saddle-ride type vehicle, comprising: a resonator chamber formed in the air cleaner case and connected to the connecting tube;
The resonator chamber is formed integrally with the case body, and a cylindrical portion having both ends opened;
Formed in an opening on one end side of the cylindrical portion, and a connecting portion with the connecting tube,
The element support member that supports the air cleaner element and is sandwiched between the case body and the case cover is opposed to the opening on the other end side of the resonator chamber so that the opening is covered by the element support member. Features.
According to the air cleaner device for a saddle-ride type vehicle, the resonator chamber has a cylindrical portion that is formed integrally with the case body and is open at both ends. It becomes possible to directly form the connecting portion with the connecting tube.
According to the air cleaner device for a saddle-ride type vehicle, the connecting portion with the connecting tube is directly formed in the opening on one end side of the cylindrical portion, and the opening on the other end side of the resonator chamber supports the air cleaner element and the case body. And an element support member sandwiched between the case cover and the case cover.
That is, according to the air cleaner device for a saddle-ride type vehicle, the connection portion with the connecting tube is directly formed in the opening on one end side of the cylindrical portion formed integrally with the case body, and the opening on the other end side of the resonator chamber. Since the resonator chamber is formed by being covered with the element support member, a dedicated component for configuring the resonator chamber becomes unnecessary.
Therefore, it is possible to reduce the number of parts and facilitate assembly work.

The axis of the cylindrical portion may be configured to intersect the opening surface of the case body substantially perpendicularly.
If comprised in this way, formation of a cylindrical part will become easy.

The connecting portion may be cylindrical, and the axis of the connecting portion and the axis of the cylindrical portion may be substantially parallel.
If comprised in this way, formation of a connection part will also become easy.

A labyrinth passage can be formed by the tip of the other end of the cylindrical portion facing the element support member and the element support member.
If comprised in that way, it will become difficult to leak the air in a resonator room | chamber interior, and the function as a resonator can be improved.

The inside of the air cleaner case is partitioned into an unpurified chamber and a purification chamber by the element support member, and the purification chamber is disposed between the tip of the other end of the cylindrical portion facing the element support member and the element support member. It is also possible to form a gap that communicates with the purification chamber and to provide a drain hole in the purification chamber.
With such a configuration, even if water is generated in the resonator chamber due to condensation or the like, water can be drained well through the gap and the drain hole of the purification chamber.

The connecting tube is connected to a connection port provided in the case body and communicates the inside and outside of the case body,
The connection portion of the resonator chamber may protrude from the case body and be connected to the connecting tube outside the case body.
If comprised in that way, since it becomes easy to ensure the work space which connects a connecting tube and a resonator chamber outside the case main body, it becomes possible to perform a connection operation | work easily.

The air cleaner case is provided at the rear on a swingable power unit having an intake port at the front,
The connecting tube may be extended toward the front of the vehicle, and the resonator chamber may be formed at a front portion of the case body.
With such a configuration, the connecting operation between the connecting tube and the resonator chamber is facilitated, and the shape of the resonator chamber can be simplified.

The connection portion may be configured to be disposed within a vertical width of a connection port between the connecting tube and the air cleaner case in a side view.
With such a configuration, since the resonator chamber and the connecting tube can be connected in a state where the bending of the connecting tube is reduced, the intake resistance can be reduced.

A seal member is interposed between the case body and the element support member, and the seal member is provided so as to cover the front of the opening on the other end side of the cylindrical portion in a side view. be able to.
With such a configuration, even if the resonator chamber is formed on the front side of the air cleaner case that is easily affected by rainwater or the like during traveling, the resonator chamber can be effectively protected from rainwater or the like.

1 is a side view of a scooter type motorcycle that is an example of a vehicle using an embodiment of an air cleaner device for a saddle riding type vehicle according to the present invention. The partial abbreviation top view of the vehicle. FIG. 3 is a cross-sectional plan view (3-3 cross-sectional view in FIG. 4) showing an embodiment of an air cleaner device for a saddle-ride type vehicle according to the present invention. FIG. 4 is a front sectional view of the same embodiment (4-4 sectional view in FIG. 3). The side view which shows the case main body 40 and the connecting tube 80. FIG. The side view which mainly shows the case main body 40 and the air cleaner element 70. FIG. The side view which shows the air cleaner case 30. FIG. The perspective view of the case cover 60. FIG. The partial abbreviation sectional view of a modification. The front sectional view of a modification. The plane sectional view of a modification.

  Embodiments of an air cleaner device for a saddle riding type vehicle according to the present invention will be described below with reference to the drawings. In each figure, the same reference numerals are given to the same or corresponding parts.

FIG. 1 is a side view of a scooter type motorcycle that is an example of a vehicle using an embodiment of an air cleaner device for a saddle type vehicle according to the present invention.
The motorcycle 1 is a vehicle in which a power unit (unit swing engine) 10 is suspended at a rear portion of a body frame 2 by a pivot shaft 2p and a rear cushion unit 3 so as to be swingable around the pivot shaft 2p.
A front fork 2f is attached to the head pipe 2h of the frame 2 so as to be steerable, and a front wheel 4f is rotatably attached to the lower end of the front fork 2f.

In the power unit 10, a cylinder block 12 oriented in a slightly upward direction is coupled to the front portion of the crankcase 11, a cylinder head 13 is coupled to the front end of the cylinder block 12, and a cylinder head cover 14 is coupled to the front end of the cylinder head 13. Are combined. A swing arm 15 that also serves as a transmission case extends integrally with the rear portion of the crankcase 11, and a rear wheel 4 r is rotatably supported at the rear end of the swing arm 15. An air cleaner device 20 is disposed above the swing arm 15.
A seat 5 on which a driver is seated is provided above the rear portion of the vehicle body frame 2, a storage box 6 and a fuel tank 7 are provided below the seat 5, and a tail lamp 8 is disposed behind the fuel tank 7. ing.

As shown in FIGS. 2 to 4, the air cleaner device 20 includes an air cleaner case 30, a connecting tube 80, and a resonator chamber 50.
The air cleaner case 30 includes a case main body 40 having an opening 41 and a case cover 60 that covers the opening 41 of the case main body 40, and the air cleaner element 70 is accommodated therein. The inside of the air cleaner case 30 is divided into an unpurified chamber 62 and a purified chamber 42 by an element support member 71 that supports the air cleaner element 70.

The connecting tube 80 supplies the air CA in the purification chamber 42 purified by the air cleaner element 70 to the internal combustion engine of the power unit 10.
The resonator chamber 50 is formed in the air cleaner case 30 and connected to the connecting tube 80.
The resonator chamber 50 is integrally formed with the case body 40 and is connected to a cylindrical portion 53 that is open at both ends (openings are indicated by reference numerals 51 and 52) and an opening 51 on one end side of the cylindrical portion 53. A connecting portion 54 with the tube 80 is provided. 3 and 5, reference numeral 53 b denotes a partition wall that constitutes a part of the cylindrical portion 53 and partitions the purification chamber 42 and the resonator chamber 50.
The opening 52 on the other end side of the resonator chamber 50 is covered with an element support member 71 that supports the air cleaner element 70 and is sandwiched between the case body 40 and the case cover 60.

  According to the air cleaner device 20 of such a saddle-ride type vehicle, the resonator chamber 50 has the cylindrical portions 53 that are formed integrally with the case main body 40 and open at both ends. It is possible to directly form the connecting portion 54 with the connecting tube 80 in one of the openings (the opening 51 in the drawing). For example, when the case main body 40 is produced by injection molding of synthetic resin, the mold can be removed from the other opening (the opening 52 in the figure is shown), so one of the ends of the cylindrical portion 53 can be removed. It is possible to directly form the connection portion 54 with the connecting tube 80 in the opening (the opening 51 in the drawing).

  According to the air cleaner device 20 of the saddle riding type vehicle, the connection portion 54 to the connecting tube 80 is directly formed in the opening 51 on one end side of the cylindrical portion 53, and the opening 52 on the other end side of the resonator chamber 50 is formed in the air cleaner 50. The element 70 is supported and covered with an element support member 71 sandwiched between the case body 40 and the case cover 60.

That is, according to the air cleaner device 20 of the saddle-ride type vehicle, the connection portion 54 to the connecting tube 80 is directly formed in the opening 51 on one end side of the cylindrical portion 53 formed integrally with the case main body 40, and the resonator chamber Since the resonator chamber 50 is formed by covering the opening 52 on the other end side of the element 50 with the element support member 71, a dedicated component for configuring the resonator chamber 50 is not necessary.
Therefore, it is possible to reduce the number of parts and facilitate assembly work.

The cylindrical portion 53 has a configuration in which the axis 53 a intersects the opening surface 41 of the case body 40 substantially perpendicularly.
If comprised in this way, formation of the cylindrical part 53 will become easy. If the axis 53a of the cylindrical portion 53 intersects with the opening surface 41 of the case body 40 substantially perpendicularly, for example, as described above, the mold can be easily removed, and therefore the cylindrical portion 53 can be easily formed.

As shown in FIG. 4, the connecting portion 54 has a cylindrical shape, and is configured such that the axis 54 a of the connecting portion 54 and the axis 53 a of the cylindrical portion 53 are substantially parallel.
If comprised in this way, formation of the connection part 54 will also become easy. For example, as described above, it is easy to remove the mold.

  The structure between the end 53e on the other end side of the cylindrical portion 53 facing the element support member 71 and the element support member 71 can adopt an appropriate structure, and can also be a structure in which both are brought into contact. The structure can be as follows.

For example, as shown in FIG. 3 and the like, a gap C communicating with the purification chamber 42 of the case main body 40 is formed between the other end 53e of the cylindrical portion 53 and the element support member 71. In this case, the purification chamber 42 is provided with a drain hole 43 (see FIGS. 4 and 5).
With this configuration, even if water is generated in the resonator chamber 50 due to condensation or the like, the water can be drained well through the gap C, the purification chamber 42, and the drain hole 43.
For example, as will be described later, when the seal member 31 is provided between the element support member 71 and the case main body 40, the gap C serves as a pressing margin, so that sealing performance is also ensured.

The structure between the other end 53e of the cylindrical portion 53 and the element support member 71 can be a labyrinth structure, for example, as shown in FIG. That is, the labyrinth passage 72 can be formed by the other end 53e of the cylindrical portion 53 and the element support member 71. The labyrinth passage 72 can be formed by forming a protrusion 73 on the element support member 71 and inserting the other end 53e of the cylindrical portion 53 between the protrusions 73 and 73.
If comprised in this way, it will become difficult to leak the air in the resonator chamber 50, and the function as a resonator can be improved.

As shown in FIG. 3 and the like, the connecting tube 80 is connected to a connection port 44 provided in the case body 40 to communicate the inside and outside of the case body 40, and the connection portion 54 of the resonator chamber 50 is connected to the outside of the case body 40. It protrudes and is connected to the connecting tube 80 outside the case body 40.
If comprised in this way, since it becomes easy to ensure the work space which connects the connecting tube 80 and the resonator chamber 50 on the exterior of the case main body 40, it becomes possible to perform a connection operation | work easily.
The connecting portion 84 of the connecting tube 80 to the connecting portion 54 of the resonator chamber 50 can be configured as a cylindrical portion that fits into the connecting portion 54 of the resonator chamber 50. In FIG. 2, 84b is a hose band of the connecting portion 84.

As shown in FIG. 2 and the like, the power unit 10 has an intake port 13 i at the front, and the air cleaner case 30 is provided at the rear on the power unit 10. The connecting tube 80 extends toward the front of the vehicle (in the direction of the arrow FR), and the resonator chamber 50 is formed at the front portion of the case body 40 (see FIG. 3).
If comprised in this way, while the connection operation | work of the connecting tube 80 and the resonator chamber 50 becomes easy, the shape of the resonator chamber 50 can also be simplified.

As shown in FIG. 5, the connection portion 54 is disposed within the vertical width H <b> 1 of the connection port 44 between the connecting tube 80 and the air cleaner case 30 in a side view.
If comprised in this way, since the resonator chamber 50 and the connecting tube 80 can be connected in the state which lessened the bending of the connecting tube 80, intake resistance can be reduced.

As shown in FIGS. 3 to 5, a seal member 31 is interposed between the case main body 40 and the element support member 71, and the seal member 31 is cylindrical in a side view (FIGS. 3 and 5). It is provided so as to cover the front of the opening 52 on the other end side of the portion 53.
If comprised in this way, even if it forms the resonator room 50 in the front part side of the air cleaner case 30 which is easy to be influenced by rainwater etc. at the time of driving | running | working, the resonator room 50 can be effectively protected from rainwater etc.

  As shown also in FIGS. 6 and 7, the case cover 60 is fastened and fixed to the case main body 40 with bolts 61 so that the element support member 71 holding the air cleaner element 70 is sandwiched between the case cover 40 and the case main body 40. . A seal member 32 is provided between the element support member 71 and the case cover 60. An unpurified chamber 62 is formed between the case cover 60 and the air cleaner element 70 or the element support member 71. The unpurified chamber 62 is provided with a drain hole 66 for discharging rainwater or the like that has entered the chamber.

  As shown in FIGS. 1 and 5, the case main body 40 is integrally provided with fixing brackets 45 and 46, and these brackets 45 and 46 are attached to fixing portions 10 b and 10 c provided in the power unit 10. The air cleaner case 30 is fixed on the power unit 10 by being fastened and fixed with bolts (not shown).

As shown in FIG. 3 and the like, an intake duct 63 for taking in air is provided at the front portion of the case cover 60. The case cover 60 is provided with a guard plate 64 that projects outward from the front portion of the intake duct 63 and protects the intake duct 63, and the guard plate 64 is provided with a louver 65 (FIG. 7, FIG. 7). (See FIG. 8).
Therefore, as indicated by an arrow A in FIG. 3, the air A is taken into the unclean chamber 62 directly from the outside of the air cleaner case 30 or through the louver 65 of the guard plate 64, through the intake duct 63, and the air cleaner element. The purified air CA is purified by passing through 70, and is supplied from the purification chamber 42 to the intake port 13 i of the power unit 10 through the connecting tube 80.

  As shown in FIGS. 1 and 2, a throttle body 16 and an intake pipe 17 are provided between the connecting tube 80 and the intake port 13 i, and a fuel injector 18 is disposed in the intake pipe 17.

  As shown in FIGS. 2 and 3, the cylinder head cover 14 of the power unit 10 and the connecting tube 80 are connected by a blow-by hose 21. As a result, the blow-by gas is circulated from the cylinder head cover 14 to the connecting tube 80 and returned to the combustion chamber through the throttle body 16.

The crankcase 11 of the power unit 10 and the purification chamber 42 are connected by a fresh air supply hose 22. A solenoid valve 23 is interposed in the fresh air supply hose 22, and a reed valve 24 is interposed in a connection portion between the fresh air supply hose 22 and the crankcase 11.
If comprised in this way, the clean air CA in the purification | cleaning chamber 42 will be supplied in the crankcase 11 through the fresh air supply hose 22, the solenoid valve 23, and the reed valve 24 by opening the solenoid valve 23 as needed. This can facilitate the flow of blow-by gas from the cylinder head cover 14 to the connecting tube 80.
3 and 5, reference numeral 47 denotes a connection hole for the fresh air supply hose 22.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be appropriately modified within the scope of the gist of the present invention.
For example, the portion of the element support member 71 facing the resonator chamber 50 does not need to be flat, and an appropriate shape can be adopted. For example, as shown in FIG. 10, it can also be made into the convex shape which goes into the resonator chamber 50, and it is possible to adjust the capacity | capacitance in the resonator chamber 50 by it. For example, as shown in FIG. 11, it can also be set as the shape corresponding to the shape of the other end 53e of the cylindrical portion 53, whereby the capacity of the resonator chamber 50 can be adjusted and the degree of freedom can be improved. .

    1: straddle-type vehicle, 10: power unit, 13i: intake port, 20: air cleaner device, 30: air cleaner case, 31: seal member 40: case body, 41: opening, 42: purification chamber, 43: drain hole, 44 : Connection port, 50: Resonator chamber, 51, 52: Opening, 53: Cylindrical portion 53, 53a: Axis, 54: Connection, 54a: Axis, 60: Case cover, 70: Air cleaner element, 71: Element support member 72: Labyrinth passage, 80: Connecting tube, C: Crevice.

Claims (9)

An air cleaner case (40) having a case body (40) having an opening (41) and a case cover (60) covering the opening (41) of the case body (40), in which an air cleaner element (70) is accommodated. 30),
A connecting tube (80) communicating between the inside and outside of the case body (40) to supply the air purified by the air cleaner element (70) to the internal combustion engine;
An air cleaner device for a saddle-ride type vehicle, comprising: a resonator chamber (50) formed in the air cleaner case (30) and connected to the connecting tube (80);
A cylindrical portion (53) in which the resonator chamber (50) is formed integrally with the case main body (40) and is open at both ends;
A connecting portion (54) formed with an opening (51) on one end side of the tubular portion (53) and the connecting tube (80);
The resonator chamber to the opening (52) of the other end (50), said case body (40) and the element support member which is the de sandwiched case cover (60) while supporting the air cleaner element (70) (71) , The opening (52) is covered with the element support member (71) . In claim 1,
An air cleaner device for a saddle-ride type vehicle, characterized in that an axis (53a) of the cylindrical portion (53) intersects the opening surface of the case body (40) substantially perpendicularly. In claim 1 or 2,
The connecting portion (54) is cylindrical, and the axis (54a) of the connecting portion (54) and the axis (53a) of the cylindrical portion (53) are substantially parallel. -Type vehicle air cleaner device. In any one of Claims 1-3,
A straddle-type vehicle characterized in that a labyrinth passage (72) is formed by a tip of the other end of the cylindrical portion (53) facing the element support member (71) and the element support member (71). Air cleaner device. In any one of Claims 1-3,
The inside of the air cleaner case (30) is partitioned into an unpurified chamber (62) and a purified chamber (42) by the element support member (71),
A gap (C) communicating with the purification chamber (42) is formed between the tip of the other end of the cylindrical portion (53) facing the element support member (71) and the element support member (71). In addition, the purifier (42) is provided with a drain hole (43). In any one of Claims 1-5,
The connecting tube (80) is connected to a connection port (44) provided in the case body (40) to communicate the inside and outside of the case body (40),
A straddle type characterized in that a connecting portion (54) of the resonator chamber (50) protrudes outside the case body (40) and is connected to the connecting tube (80) outside the case body (40). Vehicle air cleaner device. In any one of Claims 1-6,
The air cleaner case (30) is provided at the rear part on the swingable power unit (10) having the intake port (13i) at the front part,
The connecting tube (80) extends toward the front of the vehicle, and the resonator chamber (50) is formed in a front portion of the case body (40). In any one of Claims 1-7,
The connection portion (54) is disposed within a vertical width of a connection port (44) between the connecting tube (80) and the air cleaner case (30) in a side view, as shown in FIG. Air cleaner device. In any one of Claims 1-8,
A seal member (31) is interposed between the case main body (40) and the element support member (71), and the seal member (31) is in addition to the cylindrical portion (53) in a side view. An air cleaner device for a saddle-ride type vehicle provided so as to cover the front of the opening (52) on the end side.

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