JP5941485B2 - Air intake structure for saddle-ride type vehicles - Google Patents

Description

  The present invention relates to an air cleaner intake structure for a saddle-ride type vehicle.

  It is known that air cleaners are required to have contradictory functions of securing a main body capacity and suppressing an increase in size. For this reason, various devices have been devised for the shape of the filter mounted inside the air cleaner, the arrangement of the suction duct, etc., and there is an improvement in the shape of the filter inside the air cleaner by providing the position of the suction duct on the cover of the air cleaner. (For example, refer to Patent Document 1).

JP 2011-012609 A

According to the invention described in Patent Document 1, the restriction of the filter shape is eased by providing a suction duct in the cover at the upper part of the air cleaner case and eliminating the rising path of the intake air passing through the air cleaner case. However, since the suction duct is provided in the cover, it is necessary to secure a space for extending the suction duct above the air cleaner and a maintenance space for replacing the filter when the air cleaner is disposed. In particular, when the air cleaner is disposed below the seat, it is necessary to reduce the height of the seat, leaving room for improvement in efficient use of the space between the air cleaner and the seat.
In addition, since the size of the filter is more than twice as large as the width of the suction duct, the intake air that has passed through the suction duct cannot be uniformly diffused into the filter, making it difficult to efficiently filter the intake air. .

  Further, in the above configuration, in order to efficiently use the space between the air cleaner and the seat, the suction duct is formed wide in the horizontal direction of the vehicle. As a result, the amount of intake air increases, but it is necessary to suppress deformation due to negative pressure of the intake duct. According to the invention described in Patent Document 1, the partition wall that divides the inside of the intake duct into left and right parts over the entire intake duct Is provided. However, due to the presence of the partition wall, the amount of inflow air is reduced at the inlet of the suction duct, and the inflow air is disturbed at the outlet of the suction duct.

  The present invention secures a high level of inflow air purification performance of the air cleaner while securing a space for extending the suction duct and improving maintainability when the air cleaner is disposed below the seat. Furthermore, the present invention is intended to provide an intake structure for a saddle-ride type vehicle that can also reduce the seat height.

According to the first aspect of the present invention, there is provided an intake structure for a saddle type vehicle in which an occupant seat is disposed on a pair of left and right seat rails, and an air cleaner is disposed between the internal combustion engine and a rear wheel below the occupant seat. A suction duct provided in a lid member at an upper portion of the air cleaner is formed substantially linearly in the front-rear direction along the seat rail within a width between the pair of seat rails, Is formed in a mountain shape having a top in the vehicle side view, and is disposed between the pair of seat rails in the vehicle side view, and the cross-sectional shape of the passage of the suction duct is formed flat in the left-right width direction, suction in the widthwise central portion of the inlet duct, the widthwise sectional shape is disposed a partition ribs formed tapered gradually toward the downstream direction, said passageway having in the partition rib is divided into right and left, the partition The ribs are integrally coupled to the upper and lower inner wall surfaces of the suction duct on the upstream side of the suction duct, and the partition ribs are connected to the suction duct from a location where the lower inner wall surface located on the downstream side of the passage does not exist. It has a height that decreases to zero in a substantially straight line toward the downstream side, an opening is formed in the lid member, and a fitting portion that is fitted to the opening is provided in the suction duct, The fitting portion is formed in a mountain shape having a top portion in a vehicle side view according to the mountain shape of the lid member, and the opening portion of the fitting portion and the lid member is formed by the top portion and the fitting portion of the lid member. The intake structure for a saddle-ride type vehicle is characterized in that the downstream side of the top of the mountain is enlarged in the vehicle width direction from the upstream side .

According to a second aspect of the present invention, an upstream portion of the suction duct extends between a rear fender that covers a rear wheel upper side and a lower surface of the occupant seat, and a cross-sectional shape in the width direction of the partition rib is upstream. The intake structure for a saddle-ride type vehicle according to claim 1 , wherein the intake structure is tapered toward the direction.

According to a third aspect of the present invention, the air cleaner covers a case main body substantially equal to the width between the outer surfaces of the pair of seat rails, an upper opening of the case main body, and the inner surfaces of the pair of seat rails. An element holder having an opening corresponding to the width between the element holder and the lid member that covers the upper surface of the element holder and holds the element between the element holder, the element and the lid member, The intake structure for a saddle-ride type vehicle according to claim 2 , wherein the intake structure is formed to have a size capable of passing between a pair of seat rails.

According to a fourth aspect of the present invention, a cross member is installed above the lid member so as to straddle between the pair of seat rails, and a fastening member for attaching the lid member to the element holder is provided on the cross member. 4. An intake structure for a saddle-ride type vehicle according to claim 3, wherein a tool insertion hole for attachment is formed.

According to a fifth aspect of the present invention, the height of the seating surface corresponding to the tool insertion hole of the tightening member provided on the lid member and the height of the mating surface of the corresponding element holder are the same as those of other tightening members. It is formed higher than the height of the seating surface and the mating surface of the corresponding element holder, and one downward inclined surface of the mountain shape of the lid member is arranged close to the lower surface of the cross member, The intake structure for a saddle-ride type vehicle according to claim 4 .

  According to the first aspect of the present invention, in the air cleaner disposed below the seat rail, the central portion in the front-rear direction of the mountain-shaped lid member is disposed between the seat rails and provided on the lid member. The suction duct is formed between the seat rails in a substantially straight line along the seat rails toward the rear of the vehicle. Therefore, even if the air cleaner is arranged close to the lower portion of the seat rail, the extension of the suction duct is not hindered, and the height of the passenger seat can be reduced.

Further, the cross-sectional shape of the passage of the suction duct is formed to be flat in the left-right direction, and a partition rib whose width-direction cross-sectional shape is gradually tapered toward the downstream direction is disposed at the center in the width direction. ing. Therefore, it is possible to prevent deformation of the suction duct formed flat due to negative pressure, rectify inflow air downstream of the passage, increase intake efficiency and inflow air purification efficiency, and suppress generation of noise.
Further, the partition rib is integrally coupled to the upper and lower inner wall surfaces of the suction duct on the upstream side of the suction duct, and the height of the partition rib is determined from the position where the lower inner wall surface located on the downstream side of the passage does not exist. It is formed so as to decrease to zero substantially linearly toward the downstream side of the suction duct. Therefore, inflow air is rectified by the partition rib even in a region where the lower inner wall surface of the downstream portion of the intake duct does not exist, so that intake efficiency and inflow air purification efficiency can be increased, and generation of noise can be suppressed.

In the invention according to claim 2 , the space for arranging the suction duct can be secured by extending the upstream portion of the suction duct between the rear fender and the lower surface of the passenger seat. Further, since the cross-sectional shape in the width direction of the partition rib is tapered toward the upstream direction, the amount of inflow air at the upstream end of the partition rib can be increased and the intake efficiency can be increased during the intake of air.

In the invention according to claim 3 , since the lid member and the element of the air cleaner are formed so as to pass between the seat rails, the element can be easily replaced by simply removing the seat at the time of maintenance.

In the invention according to claim 4 , even if a cross member is installed between the seat rails above the lid member, it is easy to insert the tool from the tool insertion hole formed in the cross member into the fastening member of the lid member. Can be removed. Therefore, the lid member can be disposed close to the cross member, and maintainability can be ensured.

In the invention according to claim 5 , the height of the seating surface corresponding to the tool insertion hole of the fastening member provided in the lid member and the height of the corresponding mating surface of the element holder are the same as those of the seating surfaces of the other fastening members. The height and the height of the mating surface of the corresponding element holder are formed, and one downward inclined surface of the mountain shape of the lid member is disposed in proximity to the lower surface of the cross member. Therefore, when removing the lid member, it is possible to reduce the protruding amount of the tightening member at the position corresponding to the tool insertion hole to the lower part of the lid member, and it is possible to easily pull out the vehicle rearward by only lifting the lid member a little. Therefore, the height of the occupant seat can be reduced while ensuring maintainability.

1 is a right side view of a saddle-ride type vehicle according to the present invention. FIG. 2 is an enlarged view of a right side view of the saddle-ride type vehicle shown in FIG. 1. FIG. 3 is a view taken along the arrow III in FIG. 2 with the passenger seat and the fuel tank removed. FIG. 4 is a longitudinal sectional view of a main part taken along line IV-IV in FIG. 3 of the intake structure of the saddle-ride type vehicle according to the present invention. It is a top view of an air cleaner. It is a right view of a case main-body part. It is a top view of an element holder. FIG. 8 is a cross-sectional view of the element holder taken along line VIII-VIII in FIG. 7. It is a top view of an element. It is a top view of a lid member. It is the XI-XI sectional view taken on the line of FIG. It is the XII-XII sectional view taken on the line of the air cleaner of FIG. It is a top view of a suction duct. It is a right view of a suction duct. It is the XV-XV sectional view taken on the line of the suction duct of FIG. It is the XVI-XVI sectional view taken on the line of the suction duct of FIG. It is the XVII-XVII sectional view taken on the line of the suction duct of FIG. It is a XVIII arrow directional view of FIG. 14 of a suction duct.

Below, the Example of the intake structure 30 of the saddle-ride type vehicle 0 based on this invention is described using figures.
In this specification, unless otherwise specified, the front, rear, left, and right are determined based on the traveling direction of the vehicle.

As shown in FIGS. 1 and 2, in the body frame 1 of the saddle-ride type vehicle 0, the main frame 3 that extends rearward from the rear upper part of the head pipe 2 toward the center in the vehicle width direction extends slightly obliquely downward. Thereafter, a curved portion 3a bent downward is formed, and a steeply inclined portion 3b is formed in which the curved portion 3a is inclined obliquely downward and downward, and obliquely rearward from the rear lower portion of the head pipe 2 in the center in the vehicle width direction. The down frame 4 is extended.
A pair of left and right seat rails 5 extends from the upper part of the curved portion 3a of the main frame 3 to form a horizontal portion 5a that extends substantially horizontally rearward, and then bends slightly upward to form a bent portion 5b. The seat rail 5 is supported by a backstay 6 that is extended and connects the bent portion 5b and the lower portion of the steeply inclined portion 3a.

A front fork 7 is pivotally supported on the head pipe 2 so as to be slidable left and right, and a front wheel 8 is rotatably supported at a lower end thereof, and a steering handle 9 for steering is integrally coupled to an upper end thereof. ing.
A rear fork 11 having a front end supported by a pivot shaft 10 provided at a lower portion of the main frame 3 so as to tilt up and down is extended rearward, and a rear wheel 12 is rotatably supported at the rear end. A rear fender 13 is connected from the central portion of the rear fork 11 so as to cover the upper part of the rear wheel 12, and a rear cushion 14 is interposed between the central portion and the curved portion 3a.

A fuel tank 15 is installed above the main frame 3 so as to straddle the left and right, and a tool insertion hole at the center of the cross member 16 installed over both the seat rails 5 above the horizontal part 5a of the seat rails 5. The fuel tank 15 is integrally fixed by a bolt 16b screwed to the 16a. An occupant seat 17 is supported behind the fuel tank 15 and supported by the seat rail 5.

  As shown in FIGS. 1 and 2, in the internal combustion engine 20 of the saddle-ride type vehicle 0, the front part is attached to the front part mounting bracket 18 attached to the lower end part of the down frame 4 with two bolts 18 a at the top and bottom. The rear part is integrally attached to the rear part mounting bracket 19 attached to the steeply inclined part 3b of the main frame 3 by two bolts 19a at the upper and lower parts.

  The internal combustion engine 20 mounted on the saddle-ride type vehicle 0 has a cylinder block 22, a cylinder head 23, and a cylinder head cover 24 stacked on the crankcase 21 with a slight forward inclination in order. This is a SOHC type single-cylinder four-stroke cycle internal combustion engine that is integrally coupled by four stud bolts (not shown) penetrating each part up and down.

  The exhaust pipe 25 connected to the front part of the cylinder head 23 extends slightly forward, then bends obliquely backward and downward, and then bends backward to the rear and to the right along the lower surface of the crankcase 21. It approaches and is connected to the silencer 26 arranged on the right side of the rear wheel 12.

  An intake pipe 27 is connected to the rear part of the cylinder head 23, and the intake pipe 27 is located in a space surrounded by the curved portion 3 a, the seat rail 5, and the backstay 6 in a vehicle side view through a carburetor 28 and a contube 29. Connected to the air cleaner 31 (see FIG. 4).

As shown in FIGS. 4 and 5, the main part of the air cleaner 31 includes a case main body 32, an element holder 40, an air cleaner element (hereinafter simply referred to as an element) 50, a lid member 60, and a lid member 60. And a suction duct 70 provided.
As shown in FIG. 3, the lid member 60 and the suction duct 70 are located between the inner side surfaces 5c of the seat rail 5 in a plan view, and the case main body 32 and the element holder 40 are below the seat rail 5 and are seated. It has a width substantially equal to that between the outer side surfaces 5d of the rails 5 and is arranged so as not to protrude outwardly from the seat rails 5.

  As shown in FIGS. 4 and 6, the case main body 32 includes a storage chamber 33 having an approximate shape of an obtuse isosceles triangle having a long side facing upward in a side view, and a front right side of the storage chamber 33. The insertion tube 34 is inserted into the connecting portion 34 through which the connecting tube 29 connected to the carburetor 28 is inserted, and the above-described connecting tube 29 is inserted into the front central portion of the insertion portion 34. A non-performed opening is formed.

As shown in FIG. 4, on the upper mating surface 35 of the case main body 32, the seal groove 36 into which the lower protrusion 41b (FIG. 8) of the element holder 40 is fitted, and the element holder 40 are provided. A screw hole (not shown ) corresponding to the insertion hole 43 (FIG. 7) is formed.

  As shown in FIGS. 5, 7, and 8, the element holder 40 has protrusions 41 formed on the upper and lower surfaces along the outer peripheral edge portion, and a body portion fastening member 69 is applied to the outer peripheral edge portion. A plurality of seating surfaces 42 are provided in contact with each other, and each seating surface 42 is formed with an insertion hole 43 through which the main body fastening member 69 is inserted. The upper ridge 41a formed on the upper surface of the element holder 40 is intermittently formed except for the portion of the seat surface. On the other hand, the lower ridge 42b formed on the lower surface of the element holder 40 is continuously formed to meander while avoiding the insertion hole 43.

As shown in FIG. 7, a concave portion 44 corresponding to the width between the inner side surfaces 5 c of the seat rail 5 and narrower than between the inner side surfaces 5 c of the seat rail 5 is formed at the center of the element holder 40. A lower seal groove 45 is formed at the outer peripheral edge of the recess 44, and a mating surface 46 is provided at the front and rear portions of the outer edge. The mating surface 46 is provided with a screw hole 47.
A rectangular opening 49 is provided at the bottom 48 of the recess 44. The opening 49 is covered from the lower surface with a holding plate 49b capable of air circulation, and the holding plate 49b is stopped at the bottom 48 with a rivet 49a. Yes.

  As shown in FIG. 9, the element 50 has a substantially rectangular shape that is long in the front-rear direction in a plan view, and is narrower in width than between the inner side surfaces 5 c of the seat rail 5, and can pass between the seat rails 5. (See FIG. 3). As shown in FIG. 4, the element 50 is formed with corresponding protrusions 51 on the upper and lower surfaces of the outer peripheral edge so as to be fitted into the upper and lower seal grooves 66 and 45 of the lid member 60 and the element holder 40. . In addition, a filter member 52 is provided at the center of the element 50 so that the outer shape of the filter paper is folded into a rectangular parallelepiped shape.

  As shown in FIG. 4, the element 50 is configured such that the upper protrusion 51 a is inserted into the upper seal groove 66 of the lid member 60 and the lower protrusion 51 b is inserted into the lower seal groove 45 of the element holder 40, respectively. 60 and the element holder 40. In addition, since the element 50 is formed so that the width direction is narrower than that between the inner side surfaces 5c of the seat rail 5 in plan view, the element 50 can be easily replaced by passing between the seat rails 5 together with the lid member 60. It is possible.

As shown in FIGS. 10 and 11, the lid member 60 is formed in a substantially rectangular shape that is long in the front-rear direction in a plan view, and the width direction is narrower than between the inner side surfaces 5 c of the seat rail 5. It is possible to pass through (see FIG. 4). Further, the lid member 60 is formed in a mountain shape in which a central portion in the front-rear direction protrudes upward in a cross-sectional view in the longitudinal direction, and an opening 62 is provided so as to straddle the mountain-shaped top portion 61 in the front-rear direction. On the upper surface of the outer edge of the lid member 60, seat surfaces 63 to which a fastening member 68 for attaching the lid member 60 to the element holder 40 are abutted are provided in the element holder 40 at four positions on the front and rear sides of the lid member 60. Further, each seating surface 63 is formed with an insertion hole 64 through which the tightening member 68 is inserted. Of the seat surfaces 63 provided at four locations, the top surfaces of the two front seat surfaces 63a located in front of the vehicle, and a fall-off prevention wall that prevents the fastening member 68 from falling from the periphery of the insertion hole 64 65 is extended upwards.
An upper seal groove 66 into which the upper protrusion 51a of the element 50 is fitted is formed on the lower surface of the lid member 60.

As shown in FIG. 4, at least a part of the lid member 60 is located between the seat rails 5 in a side view of the vehicle, and one front inclined surface 67a located in front of the vehicle among the mountain-shaped downward inclined surfaces 67. Is arranged so as to be close to the lower surface of the cross member 16.
As shown in FIG. 3, the cross member 16 is formed with a tool insertion hole 16 a for attaching a fastening member 68 for attaching the lid member 60 to the element holder 40. Further, as shown in FIG. 4, the lid member 60 has a front seat surface 63a located at the front of the above-described four front and rear seat surfaces 63 so that it overlaps the tool insertion hole 16a in plan view. Has been placed.

  As shown in FIG. 12, the height of the front seat surface 63a corresponding to the tool insertion hole 16a of the fastening member 68 provided in the lid member 60 and the height of the corresponding front mating surface 46a of the element holder 40 are as follows. The height of the rear seat surface 63b and the height of the rear mating surface 46b of the corresponding element holder 40 are formed. Therefore, when the lid member 60 is lifted to be removed from the element holder 40, the length of the fastening member 68 on the side of the front seat surface 63a and the front mating surface 46a projecting downward from the lid member 60 is the rear seat surface 63b. In addition, the fastening member 68 on the rear mating surface 46b side is shorter than the length protruding downward of the lid member 60.

  As shown in FIG. 12, the insertion hole 64 is formed to be thicker than the tightening member 68. When the tightening member 68 is inserted into the insertion hole 64, the tip of the tightening member 68 is moved back and forth and left and right. The tightening member 68 can be slightly inclined.

  As shown in FIG. 4, when the cross member 16 is located above the lid member 60, the replacement of the element 50 requires lifting the lid member 60 and then pulling it out rearward. By inclining the front end in the vehicle outer direction, the distance between the front ends can be widened, and the fastening member 68 protruding downward from the lid member 60 can be prevented from hitting the upper protrusion 51a of the element 50.

  As shown in FIGS. 13 and 14, the suction duct 70 is fitted into an opening 62 provided in the lid member 60, and extends substantially horizontally from the fitting portion 71. It is composed of a passage 72. The fitting portion 71 is formed in a mountain shape in a vehicle side view in accordance with the mountain shape of the lid member 60, and a fitting recess 71a is formed on the outer peripheral edge thereof, and is fitted to the inner peripheral edge of the opening 62 of the lid member 60. Is done.

As shown in FIGS. 13 and 14, the passage 72 of the suction duct 70 has a cross-sectional shape that is flat in the left-right width direction, and extends from the upper part of the fitting part 71 to the mountain-shaped top part 71 b in the front-rear direction. It extends toward the rear.
As shown in FIG. 15, the upper side wall 73 of the passage 72 extends upward in a gentle curve from the front end of the fitting portion 71 directly above the mountain-shaped top portion 71b in a side view of the vehicle. Of the mountain-shaped descending inclined surface 75 of the fitting portion 71, it extends so as to be substantially parallel to the front inclined surface 75a located in front of the vehicle. On the other hand, the lower side wall 74 of the passage 72 extends from the rear end of the fitting part 71 so as to be parallel to the upper side wall 73 in a side view of the vehicle. As shown in FIG. 17, a partition rib 78 is disposed at the center of the passage 72, and the passage 72 is divided into left and right by the partition rib 78.

  As shown in FIG. 3, the suction duct 70 is formed in a substantially linear shape in the front-rear direction along the seat rail 5 within the width between the pair of seat rails 5, and an upstream portion covers the rear wheel 12 above. It is arranged so as to extend between 13 and the lower surface of the passenger seat 17.

  As shown in FIGS. 15, 17, and 18, the partition rib 78 is integrally coupled to the upper inner wall surface 76 and the lower inner wall surface 77 of the suction duct 70 on the upstream side of the passage 72 of the suction duct 70. The height of the partition rib 78 is formed so as to decrease to zero in a substantially straight line from a portion where the lower inner wall surface 77 located on the downstream side of the passage 72 does not exist toward the downstream side of the suction duct 70. Further, as shown in FIG. 16, the partition rib 78 is tapered toward the upstream direction and the downstream direction in a cross-sectional view in the width direction.

The partition ribs 78 are intended to prevent deformation of the passage 72 due to negative pressure during intake of outside air and to rectify intake air inside the intake duct 70. By forming the cross-sectional shape of the partition rib 78 in the width direction tapered toward the upstream direction, the opening of the passage inlet 72a can be widened, and the contact resistance to the end of the partition rib 78 can be reduced when the outside air flows into the passage 72. And intake efficiency can be improved. In addition, since the cross-sectional shape in the width direction of the partition rib 78 is tapered toward the downstream direction, the cross-sectional area at the passage outlet 72b can be expanded and the speed of the inflow air can be reduced, so the pressure at the passage outlet 72b Loss can be reduced and generation of noise can be suppressed, and the inflowing air is diffused in the width direction, and dust is collected by the filter member 52 over a wide range.
Further, since the partition rib 78 extends to a region where the lower inner wall surface 77 does not exist, the above effect can be obtained even in a region where the lower inner wall surface 77 does not exist. Can be improved.
The partition rib 78 may be tapered only in the downstream direction or may be tapered only in the upstream direction, but it is preferable that the partition rib 78 is tapered in the upstream direction and the downstream direction. is there.

As described above, in the above embodiment, the following effects can be obtained.
(1) In the air cleaner 31 disposed below the seat rail 5, the central portion in the front-rear direction of the lid member 60 formed in a mountain shape is disposed between the seat rails 5 and provided on the lid member 60. A suction duct 70 is formed between the seat rails 5 in a substantially straight line along the seat rails 5 toward the rear of the vehicle. Therefore, even if the air cleaner 31 is arranged close to the lower side of the seat rail 5, the extension of the suction duct 70 is not hindered, and the height of the passenger seat 17 can be reduced.
(2) The cross-sectional shape of the passage 72 of the suction duct 70 is formed to be flat in the left-right direction, and a partition rib 78 having a width-direction cross-sectional shape gently tapered toward the downstream direction at the center in the width direction. Is arranged. Therefore, deformation due to the negative pressure of the suction duct 70 formed flat can be prevented, the inflow air downstream of the passage can be rectified, the intake efficiency can be increased, and the generation of noise can be suppressed.
(3) The partition rib 78 is integrally coupled to the upper and lower inner wall surfaces 76 and 77 of the suction duct 70 on the upstream side of the suction duct 70, and the height of the partition rib 78 is located on the downstream side of the passage 72. The lower inner wall surface 77 is formed so as to decrease to zero in a substantially straight line from the portion where the lower inner wall surface 77 does not exist toward the downstream side of the suction duct 70. Therefore, even in the region where the lower inner wall surface 77 of the downstream portion of the suction duct 70 does not exist, the inflow air is rectified by the partition rib 78, the intake efficiency can be increased, and the generation of noise can be suppressed.
(4) By arranging the upstream portion of the suction duct 70 between the rear fender 13 and the lower surface of the occupant seat 17, a space for arranging the suction duct 70 can be secured. In addition, since the cross-sectional shape in the width direction of the partition rib 78 is tapered toward the upstream direction, the amount of inflow air at the upstream end of the partition rib 78 can be increased and the intake efficiency can be increased during the intake of air. it can.
(5) Since the lid member 60 and the element 50 of the air cleaner 31 are formed so as to pass between the seat rails 5, the element 50 can be easily replaced simply by removing the passenger seat 17 during maintenance. it can.
(6) Even if the cross member 16 is installed between the seat rails 5 above the lid member 60, the tightening member 68 of the lid member 60 can be inserted through the tool insertion hole 16 a formed in the cross member 16. It can be easily removed. Therefore, the lid member 60 can be disposed close to the cross member 16, and maintainability can be ensured.
(7) The height of the front seat surface 63a corresponding to the tool insertion hole 16a of the tightening member 68 provided in the lid member 60 and the height of the corresponding front mating surface 46a of the element holder 40 are determined by other tightening members. 68. The height of the rear seat surface 63b and the height of the corresponding rear mating surface 46b of the element holder 40 are formed so that one front inclined surface 75a of the mountain-shaped descending inclined surfaces of the lid member 60 is crossed. It is arranged close to the lower surface of the member 16. Therefore, when removing the lid member 60, the amount of projection of the tightening member 68 at a position corresponding to the tool insertion hole 16a to the lower side of the lid member 60 can be reduced. Since it can be easily extracted, the height of the occupant seat 17 can be reduced while ensuring maintainability.

0 ... saddle riding type vehicle, 1 ... body frame, 2 ... head pipe, 3 ... main frame, 3a ... curved part, 3b ... steep slope part, 4 ... down frame, 5 ... seat rail, 5a ... horizontal part, 5b ... Bending part, 6 ... Back stay, 7 ... Front fork, 8 ... Front wheel, 9 ... Steering handle, 10 ... Pivot shaft, 11 ... Rear fork, 12 ... Rear wheel, 13 ... Rear fender, 14 ... Rear cushion, 15 ... Fuel Tank, 16 ... Cross member, 16a ... Tool insertion hole, 16b ... Bolt, 17 ... Passenger seat, 18 ... Front mounting bracket, 18a ... Bolt, 19 ... Rear mounting bracket, 19a ... Bolt, 20 ... Internal combustion engine, 21 ... Crankcase, 22 ... Cylinder block, 23 ... Cylinder head, 24 ... Cylinder head cover, 25 ... Exhaust pipe, 26 ... Silver silencer, 27 ... Intake pipe, 28 ... Carburetor, 29 ... Con tube, 30 ... Intake structure, 31 ... Air cleaner, 32 ... Main body part 33 ... storage room 34 ... insertion part 35 ... upper mating surface 36 ... seal groove 40 ... element holder 41 ... ridge 41a ... upper ridge 41b ... lower ridge 42 ... Seat surface, 43 ... insertion hole, 44 ... recess, 45 ... lower seal groove, 46 ... mating surface, 46a ... front mating surface, 46b ... rear mating surface, 47 ... screw hole, 48 ... bottom, 49 ... opening, 49a ... Rivet, 49b ... Holding plate, 50 ... Element, 51 ... Projection, 51a ... Upper projection, 51b ... Lower projection, 52 ... Filter member, 60 ... Cover member, 61 ... Top, 62 ... Opening, 63 ... Seating surface, 63a ... Front seating surface, 63b ... Rear seating surface, 64 ... Insertion hole, 65 ... Fall-off prevention wall, 66 ... Upper seal groove, 67 ... Inclined surface, 67a ... Front inclined surface, 68 ... Tightening 70, suction duct, 71 ... fitting portion, 71a ... fitting recess, 71b ... top, 72 ... passage, 72a ... passage inlet, 72b ... passage outlet, 73 ... upper side wall, 74 ... Lower side wall, 75 ... Inclined surface, 75a ... Front inclined surface, 76 ... Up Inner wall surface, 77 ... Lower inner wall surface, 78 ... Partition rib

Claims (5)

An occupant seat (17) is disposed on the pair of left and right seat rails (5), and an air cleaner (31) is disposed between the internal combustion engine (20) and the rear wheel (12) below the occupant seat (17). In the intake structure (30) of the saddle-ride type vehicle (0)
A suction duct (70) provided in the lid member (60) at the upper part of the air cleaner (31) is substantially in the front-rear direction along the seat rail (5) within the width between the pair of seat rails (5). Formed in a straight line,
The front and rear center portions of the lid member (60) are formed in a mountain shape having a top portion (61) in a vehicle side view, and are disposed between the pair of seat rails (5) in a vehicle side view,
The cross-sectional shape of the passage (72) of the suction duct (70) is formed flat in the left-right width direction,
A partition rib (78) whose width direction cross-sectional shape is gently tapered toward the downstream direction is disposed in the central portion in the width direction of the suction duct (70), and the partition rib (78) The passage (72) is divided into left and right,
The partition rib (78) is integrally coupled to the upper and lower inner wall surfaces (76, 77) of the suction duct (70) on the upstream side of the suction duct (70), and the partition rib (78) is From the location where the lower inner wall surface (77) located on the downstream side of the passage (72) does not exist, it has a height that decreases to zero substantially linearly toward the downstream side of the suction duct (70),
The lid member (60) has an opening (62), and the suction duct (70) is provided with a fitting portion (71) fitted to the opening (62). (71) is formed in a mountain shape having a top portion (71b) in a vehicle side view in accordance with the mountain shape of the lid member (60), the fitting portion (71) and the opening portion (62) of the lid member Is characterized in that the downstream side of the top part (61) of the lid member (60) and the mountain-shaped top part (71b) of the fitting part (71) is enlarged in the vehicle width direction from the upstream side. Intake structure for saddle-ride type vehicles. The upstream portion of the suction duct (70) extends between the rear fender (13) covering the rear wheel (12) and the lower surface of the passenger seat (17), and the partition rib (78) intake structure for a saddle type vehicle according to claim 1, wherein a widthwise sectional shape is formed tapered toward the upstream direction. The air cleaner (31) covers a case main body (32) substantially equal to the width between the outer surfaces (5d) of the pair of seat rails (5), and an upper opening of the case main body (32). The element holder (40) having an opening corresponding to the width between the inner side surfaces (5c) of the seat rail (5), and the upper surface of the element holder (40) covering the element holder (40) And the lid member (60) holding the element (50).
The intake structure for a saddle-ride type vehicle according to claim 2, wherein the element (50) and the lid member (60) are formed to have a size allowing passage between the pair of seat rails (5). . A cross member (16) is installed above the lid member (60) so as to straddle the pair of seat rails (5). The lid member (60) is attached to the element on the cross member (16). The intake structure for a saddle-ride type vehicle according to claim 3, wherein a tool insertion hole (16a) for attaching a tightening member (68) to be attached to the holder (40) is formed. The height of the seating surface (63a) corresponding to the tool insertion hole (16a) of the clamping member (68) provided in the lid member (60) and the mating surface (46a) of the corresponding element holder (40). The height is formed higher than the height of the seating surface (63b) of the other fastening member (68) and the height of the mating surface (46b) of the corresponding element holder (40),
The intake air of the saddle-ride type vehicle according to claim 4 , wherein one downward inclined surface (67a) of the mountain shape of the lid member (60) is disposed close to the lower surface of the cross member (16). Construction.

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