JP6897306B2 - Motorcycle air cleaner - Google Patents

Description

The present invention relates to an air cleaner for a motorcycle.

In a conventional motorcycle air cleaner, an air filter is fixed by sandwiching it between an upper box portion and a lower box portion (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2009-47145

It is difficult to fix the portion of the frame of the air filter that crosses the inside of the cleaner box by sandwiching it between the upper box portion and the lower box portion, unlike the conventional air cleaner.

Therefore, it is conceivable to fix the portion of the frame of the air filter that crosses the inside of the cleaner box to the cleaner box with a fastening member such as a screw.

However, using a fastening member such as a screw in the cleaner box may cause the screw to come off (fall off) into the cleaner box, or foreign matter may enter the cleaner box when the screw is tightened or removed. .. If a screw comes out or foreign matter gets inside the cleaner box, it may cause the engine to malfunction.

Therefore, an object of the present invention is to provide an air cleaner for a motorcycle that can firmly fix a filter in the cleaner box without using a fastening member such as a screw in the cleaner box.

In order to solve the above problems, the motorcycle air cleaner according to the present invention includes a case body, a lid that closes the case body, a fastening member that fixes the lid body to the case body, the case body, and the case body. comprising a filter to separate the accommodated in the internal space the interior space into a dirty side and a clean side, which are separated by a lid, wherein the filter includes a filter element for filtering the flow into non-air to the internal space, wherein It has a frame body that supports the filter element on the case body, and has a funnel that projects into the internal space and allows air that has passed through the filter element to flow out of the internal space, and the lid body projects from the inner surface thereof. has the frame body to hold down more than one pressing portion to the case body Te, the fastening member is disposed around the lid and the case body, the plurality of pressing portions, of the said case body There are a plurality of funnels , which include those arranged along the wall surface and those separated from the inner wall surface, and are pressed against the frame by the fastening force of the fastening member, and are linear. Of the plurality of pressing portions, the pressing portions separated from the inner wall surface are arranged between a pair of adjacent funnels and overlap the funnels when viewed from the arrangement direction of the funnels.

According to the present invention, the filter in the cleaner box can be firmly fixed without using a fastening member such as a screw in the cleaner box.

The left side view which shows the motorcycle to which the air cleaner which concerns on embodiment of this invention is applied. The perspective view of the air cleaner of the motorcycle which concerns on embodiment of this invention. FIG. 3 is a cross-sectional view of an air cleaner for a motorcycle according to an embodiment of the present invention. The plan view of the air cleaner of the motorcycle which concerns on embodiment of this invention in the opened state.

Hereinafter, embodiments of the motorcycle air cleaner according to the present invention will be described with reference to FIGS. 1 to 4. In the plurality of drawings, the same or corresponding configurations are designated by the same reference numerals.

FIG. 1 is a left side view showing a motorcycle to which the air cleaner according to the embodiment of the present invention is applied.

The front-rear, up-down, and left-right expressions in the present embodiment are based on the occupant of the motorcycle 1.

As shown in FIG. 1, the motorcycle 1 according to the present embodiment includes a vehicle body frame 2 extending forward and backward, a front wheel 5 arranged in front of the vehicle body frame 2, and a front wheel 5 arranged at the front end portion of the vehicle body frame 2. A steering mechanism 6 that rotatably supports the rear wheels 7, a rear wheel 7 that is arranged behind the vehicle body frame 2, a swing arm 8 that is arranged behind the vehicle body frame 2 and rotatably supports the rear wheels 7, and a vehicle body frame 2. It is equipped with an engine 9 to be mounted.

Further, the motorcycle 1 includes an air cleaner 11 that purifies the air sucked into the engine 9, a fuel tank 12 that stores fuel supplied to the engine 9, a seat 13 that allows passengers to sit, and a body frame 2. It is equipped with a cowling 15 that covers at least a part of it.

The vehicle body frame 2 is, for example, a cradle frame, the steering head pipe 21 arranged at the front end, a pair of left and right main frames 22 branching left and right immediately after the steering head pipe 21 and extending rearward, and a rear of the main frame 22. It includes a pair of left and right seat rails 23 that are connected to the end and gently extend rearward and upward.

The steering head pipe 21 supports the steering mechanism 6 so as to be steerable.

The left and right main frames 22 are bent. That is, the left and right main frames 22 branch off immediately after the steering head pipe 21 and expand to the left and right, and a long straight portion that gently descends to the rear of the vehicle and a short portion that is connected to the straight portion and extends downward. It has a straight line part. The left and right main frames 22 support the engine 9 arranged below the long straight line portion and in front of the short straight line portion. The left and right main frames 22 support the air cleaner 11 above the front half of the long straight portion, support the fuel tank 12 above the latter half of the long straight portion, and the vehicle width between the short straight portions. It supports the pivot shaft 25 extending in the direction. The pivot shaft 25 supports the swing arm 8 so as to be swingable.

The engine 9 is behind the front wheels 5 and below the main frame 22 and occupies the lower center of the motorcycle 1.

The steering mechanism 6 is connected to a steering shaft (not shown) that penetrates the steering head pipe 21 and is the center of rotation of the steering mechanism 6, a pair of left and right front forks 26 that extend vertically, and upper ends of the respective front forks 26. It is equipped with handlebars 27 extending to the left and right of the vehicle.

The handlebar 27 includes a handle grip 28 that the rider holds. The right handle grip 28 is a throttle grip.

The air cleaner 11 is arranged above the front half of the vehicle body frame 2.

The air cleaner 11 is a part of the intake path of the engine 9, and is connected to the intake side of the engine 9 via a throttle body (not shown). The air cleaner 11 filters and cleans the intake air. The air cleaner 11 is sandwiched between the left and right main frames 22 in a plan view.

The fuel tank 12 is located above the front half of the vehicle body frame 2 and behind the air cleaner 11.

The seat 13 is arranged above the latter half of the vehicle body frame 2.

In the cowling 15, the motorcycle 1 covers, for example, the vehicle body frame 2 from the front portion of the vehicle body to the lower center. The cowling 15 has a streamlined shape so as to reduce the air resistance of the motorcycle 1 during traveling and to protect the occupants from the traveling wind pressure. The cowling 15 supports the front cover 29 that covers the front portion of the vehicle, the pair of left and right side covers 31 that cover the sides of the engine 9, the air cleaner cover 32 that covers the air cleaner 11 and the fuel tank 12, and the vehicle. Includes a rear cover 36 that covers the rear of the vehicle.

FIG. 2 is a perspective view of an air cleaner for a motorcycle according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of an air cleaner for a motorcycle according to an embodiment of the present invention in lines III-III of FIG.

FIG. 4 is a plan view of the air cleaner of the motorcycle according to the embodiment of the present invention in a state where the lid is opened.

As shown in FIGS. 2 to 4, the air cleaner 11 of the motorcycle 1 according to the present embodiment is fastened to the case body 41, the lid body 42 that closes the case body 41, and the lid body 42 that is fixed to the case body 41. A member 43 and a filter 48 housed in an internal space 45 separated by a case body 41 and a lid 42 and dividing the internal space 45 into a dirty side 46 and a clean side 47 are provided. The air cleaner 11 can take out the filter 48 from the case main body 41 and replace it by removing the lid body 42 from the case main body 41.

Further, the air cleaner 11 includes a funnel 49 arranged on the downstream side of the filter 48, that is, on the clean side 47.

A combination of the case body 41 and the lid 42 is called a cleaner box 51.

The case body 41 includes an inlet 52 that guides air to the internal space 45, and an outlet 53 that allows air to flow out of the internal space 45. The entrance 52 is provided at each of the left and right corners on the front side of the case body 41. The outlet 53 is bored in the bottom wall of the latter half of the case body 41. One outlet 53 is provided for each cylinder (not shown) of the engine 9. That is, the number of outlets 53 is the same as the number of cylinders of the engine 9.

A seat 55 that supports the filter 48 is provided in the front half of the case body 41. The seat 55 is the boundary between the dirty side 46 and the clean side 47. The entrance 52 side of the seat 55 is the dirty side 46, and the exit 53 side of the seat 55 is the clean side 47. The seat 55 is tilted backward.

A convex portion 41a is provided on the edge of the case body 41 over the entire circumference. The edge of the lid 42 is provided with a recess 42a into which the convex portion 41a of the case body 41 enters over the entire circumference. The concave portion 42a of the lid body 42 is provided with a seal member 56 sandwiched between the convex portion 41a of the case body 41 and the convex portion 41a of the lid body 42.

A pair of hooks 57 are provided on the rear portion of the lid body 42. A pair of hook receivers 58 for hooking the hooks 57 of the lid 42 are provided on the rear portion of the case body 41.

There are a plurality of fastening members 43. The fastening member 43 is arranged around the lid body 42 and the case body 41. Specifically, the fastening member 43 cooperates with the hook 57 of the lid body 42 and the hook receiver 58 of the case body 41 to fix the lid body 42 to the case body 41. The fastening member 43 is a pair of first fastening members 43a arranged at the center of each side of the air cleaner 11 to fix the lid 42 to the case body 41, and the left and right ends of the front end of the air cleaner 11. Includes a pair of second fastening members 43b, which are arranged in and secure the lid 42 to the case body 41.

The filter 48 includes a filter element 61 that filters the air flowing into the case body 41, and a frame body 62 that supports the filter element 61 on the case body 41. The filter 48 is tilted backward in accordance with the tilt of the seat portion 55. The same applies to the filter element 61.

A convex portion 62a is provided on the edge of the frame body 62 over the entire circumference. The seat portion 55 in the case body 41 is provided with a recess 55a into which the convex portion 62a of the frame body 62 enters. The recess 55a of the case body 41 is provided with a seal member 63 sandwiched between the convex portion 62a of the frame body 62 and the recess 55a of the case body 41.

The frame body 62 includes a first side portion 65 along the inner wall surface 41b of the case main body 41, a second side portion 66 extending so as to cross the inside of the case main body 41, and a first side portion 65 and a second side portion 66. It has a pair of third side portions 67 connecting the two, and a pair of corner portions 69 provided between the first side portion 65 and the third side portion 67 and entering the inside of the frame body 62 in a chamfered shape. There is.

A pair of hooks 71 are provided on the rear portion of the frame body 62, that is, the second side portion 66. A pair of hook receivers 72 for hooking the hooks 71 of the frame body 62 are provided at the rear portion of the seat portion 55 of the case body 41.

The lid body 42 includes a plurality of pressing portions 73 that protrude from the inner surface 42b and press the frame body 62 against the case body 41. Each pressing portion 73 has a solid pillar shape extending from the inner surface of the lid 42 toward the frame 62 of the filter 48. Further, each pressing portion 73 has a reinforcing rib 75 extending in the length direction thereof. Reinforcing ribs 75 are provided on all four sides of a rod-shaped central portion.

The plurality of pressing portions 73 include those arranged along the inner wall surface 41b of the case main body 41 and those separated from the inner wall surface 41b. Specifically, the plurality of pressing portions 73 are a first pressing portion 76 that presses the central portion of the first side portion 65 of the frame body 62, and a second pressing portion 77 that presses the central portion of the second side portion 66. And a pair of third pressing portions 78 for pressing each of the pair of corner portions 69. The plurality of pressing portions 73 are pressed against the frame body 62 by the fastening force of the fastening member 43 acting via the lid body 42.

Of the plurality of pressing portions 73, the pressing portion 73 separated from the inner wall surface 41b is arranged between a pair of adjacent funnels 49. In other words, the second pressing portion 77 that presses the central portion of the second side portion 66 is arranged between the pair of adjacent funnels 49. Further, among the plurality of pressing portions 73, the pressing portion 73 separated from the inner wall surface 41b overlaps the funnel 49 when viewed from the arrangement direction of the funnel 49, that is, the width direction of the air cleaner 11. In other words, the second pressing portion 77 overlaps the funnel 49 when viewed from the arrangement direction of the funnel 49.

The pair of third pressing portions 78 are arranged line-symmetrically with respect to the center line C of the filter 48 connecting the center of the first side portion 65 of the frame body 62 and the center of the second side portion 66.

The frame body 62 of the filter 48 includes a pressed portion 81 in contact with the pressing portion 73. The pressed portion 81 is provided corresponding to each pressing portion 73. That is, there are a plurality of pressed portions 81, the first pressed portion 82 provided at the center of the first side portion 65 of the frame body 62 and pressed against the first pressing portion 76, and the second side portion 66. A second pressed portion 83 provided in the central portion of the above and pressed against the second pressing portion 77, and a third pressed portion 84 provided at each of the pair of corner portions 69 and pressed against the third pressing portion 78. And, including.

Further, the lid body 42 is recessed toward the inside of the lid body 42, and has a recess 87 in which the fuel device pipe 86 can be arranged, and a pressing portion 73, which is separated from the inner wall surface 41b among the plurality of pressing portions 73. That is, it includes a first rib 91 that connects the second pressing portion 77 and the recess 87.

Further, the lid body 42 has a second rib 92 that connects a plurality of pressing portions 73 that are arranged along the inner wall surface 41b of the case body 41 and those that are separated from the inner wall surface 41b. I have. The second rib 92 connects, for example, the first pressing portion 76 and the second pressing portion 77.

The funnel 49 causes the air that has passed through the filter element 61 to flow out of the internal space 45. The funnel 49 guides the air purified by the filter 48 to the intake port (not shown) of the engine 9.

Funnels 49 are provided at each outlet 53. That is, one funnel 49 is provided for each cylinder (not shown) of the engine 9 as well as the outlet 53. The number of funnels 49 is the same as the number of cylinders of the engine 9. For example, the engine 9 according to the present embodiment is a parallel 4-cylinder engine, and has a plurality of outlets 53 and funnels 49, which are arranged in a straight line.

The funnel 49 is connected to the outlet 53 of the case body 41 and projects into the internal space 45. The plurality of funnels 49 include those having different amounts of protrusion from the bottom surface of the case body 41. The two funnels 49 in the center have a larger amount of protrusion than the two funnels 49 on the left and right. Further, the two funnels 49 in the center reach the same height as the filter element 61, and the two funnels 49 on the left and right are lower than the filter element 61.

The fuel devally pipe 86 is arranged on an extension of the funnel 49. The fuel drivey pipe 86 is connected to an injector (not shown) that injects fuel toward the funnel 49.

The air cleaner 11 of the motorcycle 1 according to the present embodiment presses the filter 48 against the case body 41 by the pressing portion 73 protruding from the lid body 42 to fix the air cleaner 11. Therefore, the air cleaner 11 of the motorcycle 1 can fix the filter 48 to the case body 41 without using a fastening member such as a screw in the air cleaner 11. That is, the air cleaner 11 can surely prevent the screw from coming out of the internal space 45 and foreign matter from entering the internal space 45 when the screw is tightened or removed.

Further, the air cleaner 11 of the motorcycle 1 according to the present embodiment includes a first rib 91 for connecting the pressing portion 73 separated from the inner wall surface 41b of the case body 41 and the recess 87 of the lid body 42. .. Therefore, the air cleaner 11 can reinforce the pressing portion 73, particularly the pressing portion 73 protruding from the central portion of the lid 42 like the second pressing portion 77. Further, the air cleaner 11 can arrange a thinner columnar pressing portion 73 that does not obstruct the air path from the filter element 61 to the funnel 49 in the internal space 45.

Further, the air cleaner 11 of the motorcycle 1 according to the present embodiment is separated from the inner wall surface 41b of the case body 41 and is arranged between a pair of adjacent funnels 49 (that is, a second pressing portion 77). ) Is provided. Therefore, the air cleaner 11 can press the filter 48 against the case body 41 in the internal space 45 without obstructing the air path from the filter element 61 to the funnel 49.

Furthermore, the air cleaner 11 of the motorcycle 1 according to the present embodiment is separated from the inner wall surface 41b of the case body 41 and overlaps with the funnel 49 when viewed from the arrangement direction of the funnel 49 (that is, the second pressing portion 73). 77) is provided. Therefore, the air cleaner 11 can press the filter 48 against the case body 41 in the internal space 45 without obstructing the air path from the filter element 61 to the funnel 49. Further, the size of the air cleaner 11 can be maintained by avoiding an increase in size in the front-rear direction due to the provision of the second pressing portion 77.

Further, the air cleaner 11 of the motorcycle 1 according to the present embodiment is separated from the pressing portion 73 (first pressing portion 76) arranged along the inner wall surface 41b of the case body 41 and the inner wall surface 41b of the case body 41. A second rib 92 for connecting the pressing portion 73 (that is, the second pressing portion 77) is provided. Therefore, the air cleaner 11 can improve the rigidity of the lid 42 that presses the filter 48 against the case body 41.

Further, the air cleaner 11 of the motorcycle 1 according to the present embodiment has a first pressing portion 76 that presses the central portion of the first side portion 65 of the frame body 62, and a second pressing portion 76 that presses the central portion of the second side portion 66. It includes a second pressing portion 77 and a pair of third pressing portions 78 that press each of the pair of corner portions 69. Therefore, the air cleaner 11 can press the filter 48 against the case body 41 more firmly and fix it with a large number of pressing portions 73.

Furthermore, the air cleaner 11 of the motorcycle 1 according to the present embodiment includes a pair of third pressing portions 78 arranged line-symmetrically with respect to the center line of the filter 48. Therefore, the air cleaner 11 can reliably press and fix the filter 48 against the case body 41 without biasing the filter 48.

Therefore, according to the air cleaner 11 of the motorcycle 1 according to the present embodiment, the filter 48 in the cleaner box 51 can be firmly fixed without using a fastening member such as a screw in the cleaner box 51.

1 ... Motorcycle, 2 ... Body frame, 5 ... Front wheel, 6 ... Steering mechanism, 7 ... Rear wheel, 8 ... Swing arm, 9 ... Engine, 11 ... Air cleaner, 12 ... Fuel tank, 13 ... Seat, 15 ... Cowling , 21 ... Steering head pipe, 22 ... Main frame, 23 ... Seat rail, 25 ... Pivot shaft, 26 ... Front fork, 27 ... Handlebar, 28 ... Handle grip, 29 ... Front cover, 31 ... Side cover, 32 ... Air cleaner Cover, 36 ... Rear cover, 41 ... Case body, 41a ... Convex part, 41b ... Inner wall surface, 42 ... Lid body, 42a ... Recessed part, 42b ... Inner surface, 43 ... Fastening member, 43a ... First fastening member, 43b ... Second Fastening member, 45 ... internal space, 46 ... dirty side, 47 ... clean side, 48 ... filter, 49 ... funnel, 51 ... cleaner box, 52 ... entrance, 53 ... exit, 55 ... seat, 55a ... recess, 56 ... Seal member, 57 ... Hook, 58 ... Hook receiver, 61 ... Filter element, 62 ... Frame body, 62a ... Convex part, 63 ... Seal member, 65 ... First side part, 66 ... Second side part, 67 ... Third Sides, 69 ... corners, 71 ... hooks, 72 ... hook receivers, 73 ... pressing parts, 75 ... reinforcing ribs, 76 ... first pressing parts, 77 ... second pressing parts, 78 ... third pressing parts, 81 ... Pressed portion, 82 ... 1st pressed portion, 83 ... 2nd pressed portion, 84 ... 3rd pressed portion, 86 ... Fuel devally pipe, 87 ... recess, 91 ... 1st rib.

Claims (5)

With the case body
A lid that closes the case body and
A fastening member for fixing the lid body to the case body, and
It is provided with a filter which is housed in an internal space separated by the case body and the lid and divides the internal space into a dirty side and a clean side.
The filter includes a filter element for filtering the flow into non-air to the internal space, and a frame for supporting the filter element in the case body,
A funnel that projects into the internal space and allows air that has passed through the filter element to flow out of the internal space is provided.
The lid body has a plurality of pressing portions that project from the inner surface thereof and press the frame body against the case body.
Wherein the fastening member is disposed around the lid and the case body,
The plurality of pressing portions include those arranged along the inner wall surface of the case body and those separated from the inner wall surface, and are pressed against the frame body by the fastening force of the fastening member. Attached ,
There are multiple funnels, arranged in a straight line,
Of the plurality of pressing portions, the pressing portion separated from the inner wall surface is arranged between the pair of adjacent funnels, and the air of the motorcycle that overlaps the funnels when viewed from the arrangement direction of the funnels. cleaner. The lid is
A recess that is recessed toward the inside of the lid, and a recess in which a fuel devally pipe can be placed,
The air cleaner for a motorcycle according to claim 1, further comprising a rib for connecting the pressing portion separated from the inner wall surface and the recess among the plurality of pressing portions. The first or second aspect of claim 1 or 2, further comprising a second rib connecting the plurality of pressing portions arranged along the inner wall surface of the case body and those separated from the inner wall surface. Motorcycle air cleaner. The frame body is a pair of a first side portion along the inner wall surface of the case body, a second side portion extending so as to cross the inside of the case body, and a pair connecting the first side portion and the second side portion. It has a third side portion of the above, and a pair of corner portions provided between the first side portion and the third side portion and entering the inside of the frame body in a chamfered shape.
The plurality of pressing portions press each of the first pressing portion that presses the central portion of the first side portion, the second pressing portion that presses the central portion of the second side portion, and the pair of corner portions. The motorcycle air cleaner according to any one of claims 1 to 3 , which includes a pair of third pressing portions to be attached. The motorcycle according to claim 4 , wherein the pair of third pressing portions are arranged line-symmetrically with respect to the center line of the filter connecting the center of the first side portion and the center of the second side portion. Air cleaner.

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