JP5186333B2 - Air cleaner device for saddle-ride type vehicles - Google Patents

Description

  The present invention relates to an air cleaner device for a saddle-ride type vehicle such as a motorcycle.

Conventionally, the internal space of the air cleaner case is partitioned into a dirty side on the intake port side and a clean side on the engine side, with the air cleaner element housed and held in the air cleaner case as a boundary. There is an air cleaner device for a saddle-ride type vehicle in which a separator provided therein defines a first flow path on the intake port side and a second flow path on the air cleaner element side that is bent and connected to the first flow path ( For example, see Patent Document 1.) This is to prevent the water, sand, and the like that have entered the case together with air from reaching the air cleaner element by forming a flow path bent on the dirty side of the air cleaner case.
JP-A-8-135528

By the way, in the above-mentioned conventional configuration, the separator has a flat plate shape, and a range of about half of the separator is arranged close to the air cleaner element, so that the flow path in the part is narrowed and the air cleaner element is actually used. The range was narrowed and it was difficult to inhale efficiently.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an air cleaner device for a saddle-ride type vehicle equipped with a separator that defines a flow path bent to a dirty side of an air cleaner case, and to efficiently intake air by widening an intake flow path immediately before the air cleaner element. To do.

As a means for solving the above problems, the invention described in claim 1 is directed to an air cleaner element (for example, an air cleaner element of the embodiment) in which the internal space of the air cleaner case (for example, the air cleaner case 71 of the embodiment) is accommodated and held in the air cleaner case. E) is divided into a dirty side on the side of the intake port (for example, the intake port 78 of the embodiment) and a clean side on the side of the engine (for example, the engine 22 of the embodiment), and the dirty side includes the inside of the air cleaner case. The separator (for example, the separator 95 of the embodiment) provided on the air cleaner element side is bent and connected to the first flow path (for example, the intake air introduction path 91 of the embodiment) on the intake port side. A saddle-ride type vehicle (for example, the motorcycle of the embodiment) that defines two flow paths (for example, the right internal space 93 of the embodiment). In the air cleaner device of the vehicle 1) (for example, the air cleaner box 28 of the embodiment), the separator has a flange portion (for example, the short flange 95a of the embodiment) along the outer periphery of the separator along the flat reference surface (for example, the reference surface K of the embodiment). And the flange portion is coupled to and supported by the air cleaner case, and the separator is provided so as to bulge toward the first flow path side with respect to the reference surface so as to expand the second flow path. It is characterized by.
In the first aspect of the present invention, the air cleaner case (71) includes a case body (72) on the clean side and a case cover (75) on the dirty side. 75) includes a pair of wall portions (81, 83) that extend from the air cleaner element (E) side toward the outer side of the case and are opposed to each other, and the pair of wall portions (81, 83). An outer wall (84) that is connected and curved toward the outer side of the case, and an inner stage extending from the inner surface of the outer wall (84) toward the air cleaner element (E) on the inner side of the case cover (75). The first flow path (91) is provided with a wall (89) and is surrounded by the inner surface of the outer wall (84), one side surface of the intermediate wall (89), and the surface in the bulging direction of the separator (95). Is Downstream of the first channel (91), the second channel (93) is opened via a space (92) surrounded by the inner surface of the outer wall (84) and the other side surface of the middle wall (89). The
The saddle-ride type vehicle is a concept that includes all vehicles that ride on the vehicle body, and includes not only motorcycles (including motorbikes) but also three-wheel or four-wheel vehicles, and a low-floor footrest. It is a concept including a scooter type vehicle having a section.

The invention described in claim 2 is that, of the pair of wall portions (81, 83), the upper wall portion (81) positioned above the case cover (75) is inclined forward and downward. Features.

According to the present invention , the outer periphery of the separator is coupled to and supported by an air cleaner case along a flat reference surface, while the separator is bulged to the first flow path side (opposite to the air cleaner element) with respect to the reference surface. Thus, after following the existing configuration, the intake flow path (second flow path) immediately before the air cleaner element can be widened, and the entire air cleaner element can be used without unevenness, and intake can be performed efficiently.

According to the present invention , the separator is shaped to bulge toward the first flow path, and the wall portion facing the separator in the air cleaner case is also bulged to the outside of the case, thereby ensuring the volume of the first flow path and ensuring the second flow. The volume of the road can be secured, and intake can be performed more efficiently.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the directions such as front, rear, left and right in the following description are the same as those in the vehicle unless otherwise specified. In the figure, the arrow FR indicates the front of the vehicle, the arrow LH indicates the left side of the vehicle, and the arrow UP indicates the upper side of the vehicle.

  A scooter type motorcycle (scooter type vehicle) 1 shown in FIGS. 1 and 2 includes a front wheel 3 steered by a bar handle 2 and a rear wheel 4 driven by a swing unit 21. Steering system components including the bar handle 2 and the front wheel 3 are pivotally supported by the head pipe 12 at the front end of the vehicle body frame 11 so as to be steerable. The lower front side of the swing unit 21 is pivotally supported on the lower rear side of the body frame 11 so as to be swingable up and down. A straddle portion M having a relatively low vehicle height is provided between the bar handle 2 and the saddle riding seat 5 for occupant seating supported on the rear portion of the vehicle body. Left and right floor steps 6 on which the occupant's feet seated on the seat 5 are placed are provided on the left and right sides of the straddling portion M. Between the left and right floor steps 6, there is provided a rear-falling center tunnel portion CT that forms a bulging shape protruding upward and extends back and forth.

  The vehicle body frame 11 is formed by integrally joining a plurality of types of steel materials by welding or the like. The head pipe 12 located at the front end of the vehicle body frame 11 extends obliquely downward and rearward from the head pipe 12 and then rearwardly below the front portion of the vehicle body. One main frame 13 that extends in a curved manner, a cross frame 14 that extends to the left and right on the lower rear side of the vehicle body and joins the rear end of the main frame 13 to the left and right intermediate portions thereof, and the left and right sides of the cross frame 14 Left and right rear frames 15 that extend obliquely upward and rearward from the rear and then bend rearwardly on the upper rear side of the vehicle body, left and right pivot brackets 16 joined to the left and right side portions of the cross frame 14, The left and right gusset pipes 17 extending toward the front portion of the frame 15 are mainly used. Left and right gusset connection brackets 18 for connecting the rear ends of the left and right gusset pipes 17 are joined to the front portions of the left and right rear frames 15, respectively.

  The swing unit 21 is a swing type power unit in which a front engine 22 and a rear left power transmission mechanism 23 are integrated, and the front part of the swing unit 21 can swing up and down to the left and right pivot bracket 16 via a suspension link 16a. Supported by A rear cushion 7 is disposed between the rear portion of the power transmission mechanism 23 and the rear portion of the rear frame 15, and thus a unit swing type rear suspension is formed at the rear portion of the vehicle body.

  The engine 22 (internal combustion engine) is a water-cooled single-cylinder engine having a crankshaft (not shown) extending in the left-right direction (vehicle body width direction), and the cylinder 26 is generally directed forward from the front end portion of the crankcase 25. It protrudes horizontally (in the details, slightly upward). A front portion of the transmission case 24 of the power transmission mechanism 23 extending rearward is integrally provided on the left side portion of the crankcase 25. In the drawing, reference numeral C1 indicates a rotation center axis (crank axis) of the crankshaft, and reference C2 indicates a center axis (cylinder axis) of the cylinder 26.

  The power transmission mechanism 23 includes, for example, a belt-type continuously variable transmission and a gear-type speed reducer that decelerates the output of the continuously variable transmission and outputs it to the rear wheel axle 4a (both not shown). ). The belt-type continuously variable transmission is accommodated in the transmission case 24 across the front and rear thereof, and the gear-type reduction gear is accommodated in a gear case 24 a that is connected to the rear end portion of the transmission case 24. The rear wheel axle 4a protrudes toward the right (vehicle center side) on the rear right side of the gear case 24a, and the rear wheel 4 is supported on the rear wheel axle 4a. Then, the rotational power of the crankshaft is transmitted to the rear wheel axle 4a via the power transmission mechanism 23, so that the rear wheel 4 is driven to run the motorcycle 1.

Referring also to FIG. 3, the cylinder 26 includes a cylinder body 26a attached to the front end of the crankcase 25, a cylinder head 26b attached to the front end of the cylinder body 26a, and a front end of the cylinder head 26b. And a head cover 26c attached to the main body.
A throttle body 27 that forms an intake passage extending substantially horizontally back and forth is disposed immediately above the cylinder body 26a, and a cylinder head is interposed via an insulator 27a in which a front end portion (downstream side) of the throttle body 27 curves downward. It is connected to the intake port at the top of 26b. An injector 27b (fuel injection valve) is attached to the curved outer peripheral portion of the insulator 27a.

An air cleaner box 28 is disposed behind the throttle body 27, and a connecting tube 28 a extending forward from the air cleaner box 28 is connected to the rear end (upstream side) of the throttle body 27.
An exhaust pipe 29 extends downward from an exhaust port at the bottom of the cylinder head 26b, and the exhaust pipe 29 is appropriately curved below the engine 22 and extends rearward to connect to a silencer 29a disposed on the right side of the rear wheel 4. Is done.

  Referring to FIG. 1, the motorcycle 1 includes a front cover 31 that covers the periphery of the head pipe 12 from the front, left and right front side covers 32 that are continuous below the left and right sides of the front cover 31, and the left and right front side covers 32. The left and right floor front covers 33 that continue to the lower side, the left and right floor side covers 34 that continue to the rear of the left and right floor front covers 33, the front inner cover 35 that covers the periphery of the head pipe 12 from the rear, and the lower side of the front inner cover 35 A center front cover 36 that forms a front upper surface of the center tunnel portion CT in the straddling portion M, a center rear cover 37 that continues to the rear of the center front cover 36 and forms a rear upper surface of the center tunnel portion CT, and a center front cover 36 And the left and right sides of the center rear cover 37 Left and right center side covers 38 to form a left and right side surfaces of the center tunnel portion CT contiguous towards, having left and right rear side covers 39 covering the rear upper around the left and right rear frames 15 from the side. Each cover 31-39 is mainly comprised of a synthetic resin.

Referring to FIGS. 1 and 2, a fuel tank 45 for storing fuel for the engine 22 is disposed inside the rear part (lower part) of the center tunnel part CT, inside the front and rear intermediate parts of the center tunnel part CT. A reserve tank 46 of a radiator (not shown) for cooling the engine 22 is disposed above the front portion of the fuel tank 45.
The front portion of the center rear cover 37 is configured as a lid 47 that can be rotated (opened / closed) via a hinge shaft 47 a located at the front and rear intermediate portion of the center rear cover 37. In the concave space that is opened and closed by the lid 47, an oil supply port of the fuel tank 45 and a water supply port of the reserve tank 46 are disposed, and these can be accessed only when necessary by opening and closing the lid 47.

  The seat 5 supported above the curved wall 37a and the left and right rear side covers 39 standing up at the rear part of the center rear cover 37 has a driver seat in the front half and a rear passenger seat in the rear half. Become. The lower edge portion of the seat 5 has a linear shape that inclines rearward in a side view, and the substantially horizontal upper surface (sitting surface 5b) of the rear passenger seat is the substantially horizontal upper surface (sitting surface 5a) of the driver seat. ) With a slight displacement upward. That is, the entire sheet 5 is provided so as to be inclined slightly rearward.

  An article storage box 61 that can store articles such as a helmet H is disposed below the seat 5 and surrounded by the curved wall 37a of the center rear cover 37 and the left and right rear side covers 39. The article storage box 61 is made of synthetic resin, has a box shape that opens upward, and is appropriately supported by the covers 37 and 39, the vehicle body frame 11, and the like. The front end portion of the seat 5 is attached to the front end portion of the article storage box 61 via a hinge shaft 5c that extends in the left-right direction. As the seat 5 rotates about the hinge shaft 5c, the upper opening 61a of the article storage box 61 is opened and closed.

  The rear end portion of the sheet 5 engages with a lock mechanism (not shown) disposed at the rear end portion of the article storage box 61 in a state where the upper opening 61a of the article storage box 61 is closed (closed state). Accordingly, the upper opening 61a of the article storage box 61 is locked in a state where it is closed by the seat 5, and in this state, the seating surfaces 5a and 5b become substantially horizontal so that a passenger can be seated. On the other hand, by performing a predetermined unlocking operation on the lock mechanism, the seat 5 in the closed state can be rotated around the hinge shaft 5c so as to swing the rear end thereof upward, and the article storage box 61 The upper opening 61a can be opened.

  The upper edge portion (upper opening 61 a) of the article storage box 61 is provided in a linear shape that inclines backward in a side view so as to follow the lower edge portion of the sheet 5. On the other hand, the bottom wall 61b (see FIGS. 3 and 10) of the article storage box 61 is provided in a straight line having a slightly steeper inclination than the upper edge portion in a side view. In other words, the entire article storage box 61 is provided so as to be inclined slightly rearward and so as to increase in depth toward the front side.

  1 to 3 show a state in which a so-called jet-type helmet H that covers the head of the occupant over the top of the head, the side of the head, and the back of the head is stored in the front portion of the article storage box 61. 3 and 10, the left and right sides of the front portion of the bottom wall 61b are formed with recesses 61c that bulge downward so as to allow the lower sides of the jet helmet H to enter. As a result, the depth of the front portion of the article storage box 61 is increased by an amount necessary to accommodate the jet helmet H, and the intake system components such as the throttle body 27 positioned below the left and right recesses 61c. And clearance is secured.

  Referring also to FIG. 11, a collapsible partition plate 62 is provided at the front and rear intermediate portion of the article storage box 61. The partition plate 62 has a plate shape substantially orthogonal to the front-rear direction, and is provided in a substantially square shape when viewed from the front. A rectangular parallelepiped convex portion 61d is formed at the front and rear intermediate portion of the bottom wall 61b of the article storage box 61, and leg portions 62a are formed at the lower left and right sides of the partition plate 62 so as to straddle the convex portion 61d. . At the lower part of each leg portion 62a, a rotating shaft 62b protruding outward in the left and right directions is formed, and each rotating shaft 62b is in a holding groove 61e formed in the front and rear intermediate portion of the left and right inner side walls of the article storage box 61. It is held so as to be movable and rotatable along the groove.

  On the left and right outer edges of the partition plate 62, ribs 62c extending along the outer edge are erected toward the left and right outer sides. The lower part of each rib 62c is a locking piece 62d that is inclined so as to be positioned on the front side toward the lower side with respect to the upper part and thus the entire partition plate 62. On the other hand, the front and rear intermediate portions of the left and right inner walls of the article storage box 61 are formed with locking grooves 61f that are parallel to the locking pieces 62d and are detachably inserted from above. Here, the holding groove 61e is provided below the locking groove 61f and in parallel with the locking groove 61f.

  Now, when the partition plate 62 stands substantially vertically in the front-rear intermediate portion of the article storage box 61 and is in a state (partitioned state) in which the storage space of the article storage box 61 is divided forward and backward (see FIG. 11) The shaft 62b is held at the lower part of the holding groove 61e, and the locking piece 62d is inserted into the upper part of the locking groove 61f. Thereby, the partition plate 62 is fixed in the partition state, and small items stored in the rear portion of the article storage box 61 are prevented from moving forward due to the inclination of the bottom wall 61b, etc. It can be stored.

  On the other hand, the partition plate 62 in the partitioned state is lifted obliquely upward and rearward along the holding groove 61e and the locking groove 61f, and the locking piece 62d is pulled out from the locking groove 61f (see FIG. 12), thereby holding the holding groove. The partition plate 62 can be tilted backward with the rotation shaft 62b moved to the upper portion of 61e as the center. Then, in a state where the partition plate 62 is tilted substantially parallel to the bottom wall 61b (folded state, indicated by a chain line in FIG. 12), the front and rear of the storage space of the article storage box 61 communicate with each other and the front and rear of the upper opening 61a. It is possible to store long articles before and after crossing.

  Referring to FIGS. 1 and 2, long front and rear cutouts are formed in front and lower sides of the left and right rear side covers 39, and left and right step brackets 64 that support the left and right pillion steps 63 so as to align with the left and right cutouts. Are provided respectively. The left and right step brackets 64 integrally have a base portion 64a aligned with a notch portion on the lower front side of the left and right rear side covers 39, and a stay portion 64b extending from the lower front side of the base portion 64a diagonally downward and rearward. It becomes. The front and rear of the base portion 64a are fixed to a bracket 15a provided on the rear frame 15 by bolt fastening. The stay portion 64b is provided so as to cover the throttle body 27 from the side.

  4 to 6, the air cleaner box 28 includes a hollow box-type air cleaner case 71, a thick plate-like air cleaner element E accommodated in the air cleaner case 71, and the air cleaner case 71 toward the throttle body 27. The cylindrical connecting tube 28a extending mainly.

  The air cleaner case 71 is made of synthetic resin, and is divided into a case main body 72 that forms a right side portion located on the left and right inner sides, and a case cover 75 that forms a left side portion located on the left and right outer sides. The case main body 72 and the case cover 75 open toward the other side on the dividing plane B substantially orthogonal to the left-right direction above the transmission case 24. The opening ends of the case main body 72 and the case cover 75 have substantially the same shape, and are aligned with each other with the outer peripheral edge of the frame portion G of the air cleaner element E sandwiched therebetween. In this state, a plurality of locations on the outer periphery of the opening of the case main body 72 and the case cover 75 are fastened with screws or the like, so that the case main body 72 and the case cover 75 are detachably coupled to each other.

  The air cleaner element E is formed in a thick plate shape by folding filter paper or non-woven fabric into a bellows shape. The air cleaner element E has a long rectangular shape in front and rear in a plan view, and in an upright state parallel to the divided plane B. It arrange | positions so that the division | segmentation plane B may be straddled on either side. On the outer periphery of the air cleaner element E, a frame portion G having substantially the same outer peripheral shape as each of the openings 72a and 75a of the case main body 72 and the case cover 75 is integrally provided, and the outer peripheral edge of the frame portion G is the case main body 72 and The air cleaner element E is held in the air cleaner case 71 in the upright state by being sandwiched between the open ends of the case cover 75.

  A connecting tube 28a is inserted and held in the front end portion of the case body 72, and air in the case body 72 is supplied to the throttle body 27 through the connecting tube 28a. On the other hand, an air inlet 78 is provided at the front end portion of the case cover 75, and external air can be introduced into the case cover 75 from the air inlet 78. The internal space of the air cleaner case 71 is divided into an dirty side on the upstream side (left side, case cover 75 side) and a clean side on the downstream side (right side, case body 72 side) with the air cleaner element E as a boundary.

  The case main body 72 has a main body right side portion 74 that extends to the right with a gently tapered shape with respect to the main body left side portion 73 that forms the opening 72a that has a generally trapezoidal shape when viewed from the side, and the right end portion of the case main body 72 To the right of The main body right side portion 74 is provided slightly offset forward in the front-rear width of the main body left side portion 73. The lower end portion of the right side portion 74 of the main body projects downward from the lower end portion of the opening 72a.

  The front and rear intermediate portions of the connecting tube 28a are inserted and held at the vehicle body center position on the front wall of the main body right side portion 74. The connecting tube 28a is made of a flexible material such as rubber, and its front portion extends forward along the center plane of the vehicle body so that its front end opening reaches the rear end portion of the throttle body 27. On the other hand, the rear portion of the connecting tube 28a is bent diagonally left rear in a top view in the case main body 72, and is bent rearward after being bent obliquely upward and rearward in a side view. 72 near the upper end of the air cleaner element E and near the upper edge of the rear portion of the air cleaner element E. A breather hose 79a extending from the head cover 26c is connected to the right side of the front end portion of the right side portion 74 of the main body. A drain port 79 b for discharging moisture or the like in the case main body 72 is provided below the rear end portion (lower end position) of the main body left side portion 73.

The case body 72 is fixedly supported by the transmission case 24, and a case cover 75 is attached so as to align the right opening 75a so as to close the left opening 72a of the case body 72.
The case cover 75 has a side view shape in which the cover left side portion 77 is slightly smaller than the cover right side portion 76 that forms the opening 75a having a generally trapezoidal shape in side view. The cover left side portion 77 is formed with an inclined upper wall 81 that is inclined forward and downward in order to keep the upper portion height low.

  Referring to FIGS. 7 and 8 together, the cover left side portion 77 includes the inclined upper wall 81, a rear wall 82 inclined forward with respect to the vertical direction, and a lower portion extending substantially horizontally forward from the lower end of the rear wall 82. It has a wall 83 and an outer wall 84 that curves in a convex arc shape on the left and right outside in a top view. The front end portion of the inclined upper wall 81 and the front end portion of the lower wall 83 are vertically separated from each other, and the intake port 78 is formed between these front end portions.

  Here, the lower edge portion 39a of the left rear side cover 39 is located above the left side portion 77 of the cover (see FIG. 3), and the clearance with the lower edge portion 39a is ensured even when the swing unit 21 swings upward. For this purpose, the inclined upper wall 81 is formed on the cover left side 77. The inclination angle of the inclined upper wall 81 is set so as to be substantially parallel to the lower edge portion 39a of the left rear side cover 39 when the swing unit 21 swings upward, and the influence on the capacity of the case cover 75 is suppressed. Thus, the clearance is efficiently secured.

  The air inlet 78 has a horizontally long rectangular shape extending to the left and right sides of the case cover 75, and is inclined forward with respect to the vertical direction slightly forward of the front ends of the inclined upper wall 81, the lower wall 83, and the outer wall 84. Open along an inclined plane. The outer edge of the air inlet 78 is located on the left and right outside of the front end of the outer wall 84. From the outer edge and the upper and lower edges of the intake port 78, an intake port outer wall 85 and intake port upper and lower walls 86, 87 that are substantially parallel to the front-rear direction extend rearward, and these are the outer wall 84, the inclined upper wall 81, and the lower wall. It is provided so as to merge with the front part of 83 as appropriate.

  Inside the case cover 75, a substantially horizontal middle step wall 89 extending so as to continue to the rear of the intake port upper wall 86 is erected from the inner surface of the outer wall 84 toward the right (inner side of the case). The middle step wall 89 and the intake port upper wall 86 are in a vertical position that is biased downward from the vertical middle position of the case cover 75. In addition, the inlet lower wall 87 is provided so as to be continuous with the front of the lower wall 83. The inner edge 89a substantially parallel to the front-rear direction of the middle step wall 89 is at substantially the same left-right position as the inner edge 83a substantially parallel to the front-rear direction of the lower wall 83.

  From the inner edge located in the vicinity of the opening 75a of the case cover 75 at the intake port 78, the intake port inner wall 88 that inclines so as to be positioned on the left and right outer sides extends toward the rear left and right outer sides. The rear portion of the intake port inner wall 88 terminates at substantially the same left and right position as the inner edge 89 a of the middle wall 89. In addition, the rear edge substantially parallel to the up-down direction in the inlet-side inner wall 88 is indicated by reference numeral 88a.

  9, the rear edge 88a of the inlet inner wall 88, the inner edge 89a of the middle wall 89, the inner edge 83a of the lower wall 83 (a step portion between the lower wall of the cover right side portion 76), and A rectangular portion that is long in the front-rear direction and surrounded by the inner edge 82 a of the rear wall 82 (a step portion between the rear wall of the cover right side portion 76) and the front and rear is provided in the lower part of the case cover 75 from the intake port 78 to the rear. A separator 95 is attached that defines an air intake passage 91 that extends.

  7 and 8 together, the separator 95 has a tray shape that opens to the right, and the outer periphery of the opening has a rear edge 88a of the inlet inner wall 88, an inner edge 89a of the middle wall 89, and a lower wall 83. A short flange 95a that is in contact with the inner edge 83a and the inner edge 82a of the rear wall 82 from the right side (left and right inner sides) is continuously provided, and the short flange 95a is joined to the corresponding edge portion by welding or the like. The separator 95 has a plane defined by the rear edge 88a of the inlet inner wall 88, the inner edge 89a of the middle wall 89, the inner edge 83a of the lower wall 83, and the inner edge 82a of the rear wall 82 as a reference plane K. The short flange 95a is formed along the surface K.

  Here, the curved top portion of the outer wall 84 of the case cover 75 is at a position biased rearward from the front-rear center position of the case cover 75, and this position is the maximum projecting position of the case cover 75 to the left and right outer sides. Then, the rear portion of the middle step wall 89 is cut out so as to terminate in the vicinity of the curved top portion of the outer wall 84. In addition, the rear edge substantially parallel to the left-right direction in the middle stage wall 89 is shown with the code | symbol 89b.

  As a result, a communication port 94 that opens upward is formed at the rear portion of the intake air introduction passage 91, and the intake inlet passage 91 and the upper portion of the inclined upper wall 81, the rear wall 82, and the middle step wall are formed through the communication opening 94. An upper space 92 having a triangular shape in side view surrounded by 89 communicates with each other. The upper space 92 communicates with a right inner space 93 formed in the right side portion 76 of the cover on the right side. The right internal space 93 is provided so as to extend over the entire right opening 75a of the case cover 75, and is provided so as to be wider than the combined width of the intake air introduction path 91 and the upper space 92 in a side view.

  The outside air introduced into the intake air introduction passage 91 from the intake port 78 flows into the upper space 92 through the communication port 94 after reaching the rear portion of the case cover 75, and from the upper space 92 to the right on the right side thereof. After reaching the internal space 93 and diffusing, it passes through the entire air cleaner element E evenly and is filtered. The filtered air is supplied from the inside of the case body 72 to the engine 22 through the connecting tube 28a, the throttle body 27, and the insulator 27a.

  In this way, by forming the intake passage that is bent a plurality of times from the intake port 78 to the air cleaner element E, particularly at the rear end portion of the intake introduction passage 91 where the flow passage changes upward, it is more than the air. Water, sand or the like having a large specific gravity is captured and clogging or the like due to the fact that they reach the air cleaner element E is suppressed, and the filtration performance of the air cleaner element E can be maintained well over a long period of time. It should be noted that moisture or the like accumulated at the rear end of the intake air introduction passage 91 is discharged out of the case through the drain port 79b.

  The separator 95 includes a curved wall 96 that is curved in an arc substantially parallel to the outer wall 84, upper and lower walls 97 and 98 that extend substantially horizontally from the upper and lower edges of the curved wall 96 toward the left and right inner sides, and the curved wall 96. It has a rear wall 99 extending substantially parallel to the left-right direction from the rear edge toward the left-right inner side. The short flange 95 a is continuously provided over the front edge of the curved wall 96 and the inner edges of the upper and lower walls 97, 98 and the rear wall 99. When the separator 95 is attached, the curved wall 96 enters between the intermediate wall 89 and the lower wall 83, the upper wall 97 contacts the lower surface of the intermediate wall 89, the lower wall 98 contacts the upper surface of the lower wall 83, and the rear wall The wall 99 contacts the front surface of the rear wall 82.

  The intake air introduction path 91 changes so as to narrow the left and right widths as it advances rearward from the air intake port 78 in the introduction portion surrounded by the intake port upper and lower walls 86 and 87 and the inner and outer walls 85 and 88, and then the curved wall 96 and the outer wall 84, the curved portion surrounded by the middle wall 89 and the lower wall 83 extends rearward while maintaining a substantially constant cross-sectional shape. That is, since the outer wall 84 also bulges to the left as the separator 95 bulges to the left, the flow path of the intake air introduction passage 91 does not narrow after passing through the introduction portion.

  Further, the curved wall 96 and the outer wall 84 are formed in a convex arch shape on the outer side of the case, so that the rigidity of the curved wall 96 and the outer wall 84 is increased, so that the installation of additional reinforcement or the like is not required, and intake noise is reduced. be able to. Furthermore, since the separator 95 bulges leftward, the outer wall 84 (curved wall 96) is separated from the air cleaner element E, and the intake space (right inner space 93) immediately before the air cleaner element E is widened. Good intake can be performed, and the output performance of the engine 22 can be improved.

  As described above, the air cleaner box 28 of the motorcycle 1 in the above embodiment has the dirty space on the intake port 78 side with the air cleaner element E housed and held in the air cleaner case 71 as the boundary. The cleaner side is partitioned into a side and a clean side on the engine 22 side, and a separator 95 provided in the air cleaner case 71 is provided on the dirty side with respect to the intake air introduction passage 91 on the intake port 78 side and the intake air introduction passage 91. In the one defining the right inner space 93 on the air cleaner element E side which is bent and connected, the separator 95 has a short flange 95a along the flat reference surface K on the outer periphery thereof, and the short flange 95a is The separator 95 is coupled to and supported by the air cleaner case 71, and the separator 95 is To extend the part space 93 and is provided with bulges on the intake air introduction passage 91 side with respect to the reference plane K.

  According to this configuration, the outer periphery of the separator 95 is coupled to and supported by the air cleaner case 71 along the flat reference surface K, while the separator 95 is supported on the intake introduction path 91 side (the air cleaner element E with respect to the reference surface K). The air intake element (right inner space 93) immediately before the air cleaner element E can be expanded after following the existing structure, and the entire air cleaner element E can be used without any bias. You can inhale well.

  Further, the air cleaner box 28 has a wall portion (outer wall 84) facing the separator 95 in the intake air introduction path 91 outside the air cleaner case 71 corresponding to the swelling of the separator 95 (the separator 95 The separator 95 is formed in a bulging shape toward the intake air introduction passage 91 so that the width of the intake air introduction passage 91 is secured, and the outer wall 84 of the air cleaner case 71 is disposed outside the case. The right inner space 93 can be secured by bulging out, and intake can be performed more efficiently.

  In addition, this invention is not restricted to the said Example, For example, an air cleaner element may consist of a cylindrical thing or a urethane foam material. The reference surface of the separator may be slightly curved or have a small step. And it cannot be overemphasized that various changes are possible in the range which does not deviate from the gist of the invention concerned, such as the detailed shape of an air cleaner case and a separator, the composition of the channel in an air cleaner case.

1 is a left side view of a motorcycle according to an embodiment of the present invention. It is the left view which looked at the vehicle body cover of the said motorcycle through. FIG. 3 is an enlarged view of a main part of FIG. 2. It is a perspective view of the air cleaner box of the motorcycle. It is a left view of the said air cleaner box. It is a top view of the air cleaner box. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a right view of the case cover of the said air cleaner box. It is a perspective view of the article storage box of the motorcycle. It is sectional drawing of the partition board periphery in the said article | item storage box. It is sectional drawing equivalent to FIG. 11 which shows the folding procedure of the said partition plate.

Explanation of symbols

1 Motorcycle (saddle-ride type vehicle)
22 Engine 28 Air cleaner box (Air cleaner device)
71 Air cleaner case 78 Air inlet 84 Outer wall (wall)
91 Air intake introduction path (first flow path)
93 Right interior space (second flow path)
95 Separator 95a Short flange (flange)
K Reference surface E Air cleaner element

Claims (2)

The internal space of the air cleaner case (71) is surrounded by the air cleaner element (E) accommodated and held in the air cleaner case (71), and the dirty side on the intake port (78) side and the clean side on the engine (22) side In the dirty side, a separator (95) provided in the air cleaner case (71) is connected to the first flow path (91) on the intake port (78) side and the first flow path (91). In the air cleaner device of the saddle-ride type vehicle (1) in which the second flow path (93) on the side of the air cleaner element (E) that is bent and connected is defined,
The separator (95) has a flange portion (95a) along a flat reference surface (K) on the outer periphery thereof, and the flange portion (95a) is coupled to and supported by the air cleaner case (71). The separator (95) is provided so as to bulge toward the first flow path (91) with respect to the reference plane (K) in order to expand the second flow path (93) .
The air cleaner case (71) includes a case body (72) on the clean side and a case cover (75) on the dirty side.
The case cover (75) includes a pair of wall portions (81, 83) extending from the air cleaner element (E) side toward the case outer side and arranged to face each other, and the pair of wall portions (81, 81). 83) having an outer wall (84) that connects each other and curves toward the outside of the case,
On the inner side of the case cover (75), an intermediate wall (89) extending from the inner surface of the outer wall (84) to the air cleaner element (E) side is erected,
The first channel (91) surrounded by the inner surface of the outer wall (84), one side surface of the middle wall (89), and the surface in the bulging direction of the separator (95) is the first channel (91). The second flow path (93) is opened through a space (92) surrounded by the inner surface of the outer wall (84) and the other side surface of the middle wall (89) downstream of the wall. Air cleaner device for riding type vehicles. The upper wall portion (81) located above the case cover (75) of the pair of wall portions (81, 83) is inclined forward and downward . Air cleaner device for saddle riding type vehicles.

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