JP5192327B2 - vehicle - Google Patents

Description

  The present invention relates to a vehicle, and more particularly, to a vehicle including a throttle body and a cleaner box.

  Conventionally, a motorcycle (vehicle) including a throttle body and a cleaner box is known (see, for example, Patent Document 1). In Patent Document 1, a throttle body having a screw hole and configured to allow air to circulate, a delivery port for circulating air through the throttle body, and a screw corresponding to the screw hole are provided around the delivery port. A motorcycle including a main body (cleaner box) having a hole and a screw for fastening the throttle body and the main body is disclosed. A synthetic resin lip (seal part) is provided on the mating surface of the main body (cleaner box) of the motorcycle disclosed in Patent Document 1 with the throttle body so as to surround the delivery port. Moreover, the screw hole of the main-body part is provided in the outer side of the lip. Further, in the fastening portion constituted by the screw hole and the screw hole, when the main body portion and the throttle body are fastened by the screw, the lip is sandwiched between the main body portion and the throttle body. Accordingly, the lip has a function of preventing air or the like flowing through the delivery port from leaking out from the joint surface between the main body portion and the throttle body.

JP 2006-77781 A

  However, in the motorcycle disclosed in Patent Document 1, the lip prevents the air flowing through the delivery port from leaking out from the mating surface between the main body and the throttle body. On the other hand, there is an inconvenience that blow bioils and fuel in the main body (cleaner box) may ooze out through screw holes provided in the fastening portion outside the lip. For this reason, there is a problem in that the appearance of the motorcycle is impaired due to the bleeding of the blow biole and the fuel through the joint portion (fastening portion) between the cleaner box and the throttle body.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to suppress the bleeding of blow biole and fuel through the fastening portion between the cleaner box and the throttle body. It is to provide a vehicle that can do this.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, a vehicle according to one aspect of the present invention includes a throttle body including a first air passage that constitutes an air passage through which air is circulated to an engine, and is joined to the throttle body and is clean to the throttle body. A cleaner box for circulating air, a fastening member for fastening the cleaner box and the throttle body outside the air passage, and a seal part for sealing a joint portion between the cleaner box and the throttle body. , the seal portion includes a circumferential seal member, circumferential seal member is disposed so as to surround the outside of the fastening position and the air passage of the fastening member Rutotomoni, circumventing along the fastening position of the fastening member It is arranged so as to surround it .

  In the vehicle according to this aspect, as described above, the sealing portion is disposed so as to surround the fastening position of the fastening member and the outside of the air passage, so that the fastening position and the air passage are located on the inside of the sealing portion. Therefore, it is possible to suppress the blow-out biofuel and the fuel from being oozed out through the fastening portion between the cleaner box and the throttle body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing the overall structure of a motorcycle according to an embodiment of the present invention. 2 to 18 are views for explaining the detailed structure of the motorcycle according to the embodiment shown in FIG. In the present embodiment, a motorcycle will be described as an example of the vehicle of the present invention. In the figure, FWD indicates the front in the traveling direction of the motorcycle. First, with reference to FIGS. 1-18, the structure of the motorcycle 1 by this embodiment is demonstrated.

  As the structure of the motorcycle 1 according to the present embodiment, as shown in FIG. 1, the front end portion of the main frame 3 is connected to the head pipe 2. The main frame 3 is provided with an air introduction passage 4 for introducing air into a cleaner box 27 described later. The main frame 3 is formed to extend downward in the rear side. The main frame 3 is connected to a seat rail 5 that extends upward in the rear side. A handle 6 is rotatably attached to the head pipe 2. A front fork 7 is attached to the lower side of the handle 6. A front wheel 8 is rotatably attached to the lower end portion of the front fork 7.

  A front end portion of the swing arm 10 is attached to the rear end portion of the main frame 3 via a pivot shaft 9. A rear wheel 11 is rotatably attached to the rear end of the swing arm 10. A fuel tank 12 is disposed above the main frame 3, and a seat 13 is disposed above the seat rail 5. An engine 14 is mounted below the main frame 3.

  As shown in FIGS. 2 and 3, the engine 14 includes a piston 15, a cylinder (cylinder) 16, a cylinder head 17, and a throttle body 18. The piston 15 is slidably fitted inside the cylinder 16, and the cylinder head 17 is disposed so as to close one opening of the cylinder 16. The cylinder head 17 has an intake port 17a and an exhaust port 17b. The intake port 17a is provided for supplying an air-fuel mixture containing air and fuel to the combustion chamber 16a. Further, the exhaust port 17b is provided in order to exhaust the residual gas after combustion from the combustion chamber 16a. An intake valve 19a and an exhaust valve 19b are disposed in the intake port 17a and the exhaust port 17b, respectively. An exhaust pipe 20 is attached to the opening of the exhaust port 17b, and a muffler 21 (see FIG. 1) is connected to the exhaust pipe 20. In addition, four cylinders (cylinders) 16 of the engine 14 are provided so as to be aligned in the vehicle width direction of the motorcycle 1, and an intake port 17a and an exhaust port 17b are provided so as to correspond to each cylinder (cylinder) 16. Each is provided. That is, the engine 14 is a parallel 4-cylinder engine.

  As shown in FIGS. 4 and 5, the throttle body 18 includes a left side fixing part 22 positioned on the arrow X1 direction side, a right side fixing part 23 positioned on the arrow X2 direction side, and throttle valves 22g and 23g described later. Drive unit 24 and injector 25 for injecting fuel into intake port 17a (see FIG. 2). The left side fixing part 22 and the right side fixing part 23 are each attached to the opening of each intake port 17a, and have a function of supplying air flowing through a fixed funnel 35 described later to the intake port 17a.

  Further, as shown in FIG. 6, the left fixed portion 22 includes circular cylindrical air passages 22a and 22b through which air flows, circular screw holes 22c, 22d and 22e, a hook storage hole 22f, a throttle valve 22g. Specifically, the air passage 22a is formed on the arrow X1 direction side of the left fixed portion 22, and the air passage 22b is formed on the arrow X2 direction side of the left fixed portion 22. Further, on the line A1 passing through the center O1 of the air passage 22a and the center O2 of the air passage 22b, and at a substantially intermediate position between the center O1 of the air passage 22a and the center O2 of the air passage 22b, a hook storage hole is provided. 22f is formed. The hook storage hole 22f is configured to store a hook (not shown) of a left funnel portion 39 (see FIG. 4) described later. The throttle valve 22g is provided inside the air passages 22a and 22b, and is configured to be opened and closed by a passenger's accelerator operation. The air passages 22a and 22b are examples of the “first air passage” in the present invention.

  Moreover, in this embodiment, as shown in FIG. 8, each of the screw holes 22c (see FIG. 6), 22d, and 22e (see FIG. 6) is formed of a bag-like recess, and the bottom surface is not open. Each of the screw holes 22c, 22d, and 22e is configured such that the tip of the screw 41 is accommodated by screwing a screw 41 (see FIG. 17) described later. The screw holes 22c, 22d, and 22e are examples of the “body side fastening portion” in the present invention.

  Moreover, in this embodiment, as shown in FIG. 6, the screw hole 22c is formed in the arrow Y1 direction side of the hook accommodation hole 22f. The screw hole 22c is formed on a center line A2 that passes through substantially the middle of the air passage 22a and the air passage 22b and is orthogonal to the line A1. The screw hole 22c is in contact with the outer end 122a on the arrow Y1 direction side of the inner peripheral surface of the air passage 22a and the outer end portion 122b on the arrow Y1 direction side of the inner peripheral surface of the air passage 22b, and is substantially at the center line A2. It is configured to be located on the inner side (arrow Y2 direction side) than the vertical tangent line A3 (a line connecting the outer end portion 122a and the outer end portion 122b). The outer end portions 122a and 122b are examples of the “second outer end portion” in the present invention.

  Further, the screw hole 22d is provided in the vicinity of the outer end 222a on the inner peripheral surface of the air passage 22a on the arrow X1 direction side. Furthermore, the screw hole 22d is configured to be positioned on a tangent line A4 (a line extending perpendicularly from the outer end portion 222a) that is in contact with the outer end portion 222a and substantially parallel to the center line A2, and the air passage 22a. A tangent line A5 (outer end portion 322a and outer edge 322a on the inner peripheral surface of the inner peripheral surface and outer end portion 322b on the inner peripheral surface of the air passage 22b on the arrow Y2 direction side and substantially perpendicular to the center line A2 It is configured to be located on the inner side (arrow Y1 direction side) than the line connecting the end portions 322b. The outer end portion 222a is an example of the “first outer end portion” in the present invention, and the outer end portions 322a and 322b are examples of the “second outer end portion” in the present invention.

  The screw hole 22e is provided in the vicinity of the outer end 222b on the inner circumferential surface of the air passage 22b on the arrow X2 direction side. Furthermore, the screw hole 22e is configured to be located on the inner side (arrow X1 direction side) than the tangent line A6 (a line extending perpendicularly from the outer end portion 222b) that is in contact with the outer end portion 222b and substantially parallel to the center line A2. And is configured to be positioned on the tangent line A5. Further, the screw hole 22d and the screw hole 22e are provided at substantially equal intervals in the opposite directions along the arrow X1 direction and the arrow X2 direction with respect to the center line A2. The outer end portion 222b is an example of the “first outer end portion” in the present invention.

  In the present embodiment, the diagonal line A7 connecting the screw hole 22c and the screw hole 22d is configured to pass in the vicinity of the center O1 of the air passage 22a, and the diagonal line connecting the screw hole 22c and the screw hole 22e. A8 is configured to pass through the vicinity of the center O2 of the air passage 22b.

  In addition, a protruding portion 22 h is formed in a circumferential shape along the outer periphery of the left fixed portion 22. Further, the protruding portion 22h is a left seal groove portion 29s (described below) of the lower box portion 29 when the throttle body 18 and a lower box portion 29 described later are fastened by a screw 41 (see FIG. 4) described later. 11), an O-ring 33 (see FIG. 11), which will be described later, is fitted from below (arrow Z2 direction side in FIG. 2).

  Further, in the present embodiment, the protruding portion 22h has a part around the circular cylindrical air passages 22a and 22b and a part around the circular screw holes 22c, 22d and 22e in an arc shape from the outside. It is comprised so that it may surround. Specifically, the protrusion 22h causes the inner peripheral surface of the air passage 22a from the vicinity of the outer end portion 122a on the arrow Y1 direction side to the vicinity of the outer end portion 222a on the arrow X1 direction side. The vicinity of the outer end 322a on the arrow Y2 direction side is surrounded by an arc from the outside so as to follow the outer edge of the circular cylindrical air passage 22a. Further, by the protruding portion 22h, from the vicinity of the outer end 122b on the arrow Y1 direction side of the inner peripheral surface of the air passage 22b to the vicinity of the outer end portion 222b on the arrow X2 direction side, the arrow Y2 direction of the inner peripheral surface of the air passage 22b The vicinity of the outer end 322b on the side is surrounded by an arc from the outside so as to follow the outer edge of the circular cylindrical air passage 22b.

  Further, the protruding portion 22h surrounds a part of the outer side of the screw hole 22c in the direction of the arrow Y1 along the outer edge of the circular screw hole 22c in an arc shape from the outside. Further, the protruding portion 22h causes the outer side of the screw hole 22d to have a part on the arrow X1 direction side and a part on the arrow Y2 direction side along the outer edge of the circular screw hole 22d. Is surrounded by In addition, the protrusion 22h causes the outer side of the screw hole 22e to have a part on the arrow X2 direction side and a part on the arrow Y2 direction side along the outer edge of the circular screw hole 22e. Is surrounded by

  Moreover, as shown in FIG. 7, the right side fixing | fixed part 23 has the structure similar to the left side fixing | fixed part 22 (refer FIG. 6), circular cylindrical air passages 23a and 23b, and a circular screw hole 23c, 23d and 23e, a hook receiving hole 23f, and a throttle valve 23g. Specifically, the air passage 23a is formed on the arrow X1 direction side of the right fixing portion 23, and the air passage 23b is formed on the arrow X2 direction side of the right fixing portion 23. The right funnel portion is located on a line B1 connecting the center O3 of the air passage 23a and the center O4 of the air passage 23b, and at a substantially middle position between the center O3 of the air passage 23a and the center O4 of the air passage 23b. A hook receiving hole 23f is formed in which 40 (see FIG. 4) hooks (not shown) are stored. The throttle valve 23g is provided inside the air passages 23a and 23b. The air passages 23a and 23b are examples of the “first air passage” in the present invention.

  In the present embodiment, similarly to the screw hole 22d (see FIG. 8), each of the screw holes 23c, 23d, and 23e is formed of a bag-like recess, and the bottom surface is not opened. Each of the screw holes 23c, 23d, and 23e is configured such that the tip of the screw 41 is accommodated by screwing a screw 41, which will be described later.

  Moreover, in this embodiment, as shown in FIG. 7, the screw hole 23c is formed in the arrow Y1 direction side of the hook accommodation hole 23f. The screw hole 23c is formed on the center line B2 that passes through substantially the middle of the air passage 23a and the air passage 23b and is orthogonal to the line B1. Further, the screw hole 23c is in contact with the outer end 123a on the arrow Y1 direction side of the inner peripheral surface of the air passage 23a and the outer end portion 123b on the arrow Y1 direction side of the inner peripheral surface of the air passage 23b and is substantially at the center line B2. It is configured to be positioned on a vertical tangent line B3 (a line connecting the outer end portion 123a and the outer end portion 123b). The outer end portions 123a and 123b are examples of the “second outer end portion” in the present invention.

  Further, the screw hole 23d is provided in the vicinity of the outer end portion 223a on the inner circumferential surface of the air passage 23a on the arrow X1 direction side. Further, the screw hole 23d is configured to be positioned on a tangent line B4 (a line extending perpendicularly from the outer end portion 223a) that is in contact with the outer end portion 223a and substantially parallel to the center line B2, and the air passage 23a. A tangent line B5 (outer end portion 323a and the outer end portion 323a and the outer end portion 323a on the inner peripheral surface of the inner peripheral surface and the outer end portion 323b on the inner peripheral surface of the air passage 23b on the arrow Y2 direction side and substantially perpendicular to the center line B2 It is configured to be located on a line connecting the end portions 323b. The outer end portion 223a is an example of the “first outer end portion” in the present invention, and the outer end portions 323a and 323b are examples of the “second outer end portion” in the present invention.

  The screw hole 23e is provided in the vicinity of the outer end portion 223b on the inner circumferential surface of the air passage 23b on the arrow X2 direction side. Further, the screw hole 23e is configured to be positioned on a tangent line B6 (a line extending perpendicularly from the outer end portion 223b) that is in contact with the outer end portion 223b and substantially parallel to the center line B2, and more than the tangent line B5. It is comprised so that it may be located inside (arrow Y1 direction side). Further, the screw hole 23d and the screw hole 23e are provided at substantially equal intervals in the opposite directions along the arrow X1 direction and the arrow X2 direction with respect to the center line B2. The outer end portion 223b is an example of the “first outer end portion” in the present invention.

  In the present embodiment, the diagonal line B7 connecting the screw hole 23c and the screw hole 23d is configured to pass in the vicinity of the center O3 of the air passage 23a, and the diagonal line connecting the screw hole 23c and the screw hole 23e. B8 is configured to pass near the center O4 of the air passage 23b.

  Further, along the outer periphery of the right fixed portion 23, a protruding portion 23h is formed in a circumferential shape. Further, the protruding portion 23h, when the throttle body 18 and a lower box portion 29 described later are fastened by a screw 41 (see FIG. 4) described later, a right seal groove portion 29t (described below) of the lower box portion 29. 12), an O-ring 34 (see FIG. 12) to be described later is pressed from below (arrow Z2 direction side in FIG. 2).

  Further, in the present embodiment, the protruding portion 23h has an arc shape from the outside of a part around the circular cylindrical air passages 23a and 23b and a part around the circular screw holes 23c, 23d and 23e. It is comprised so that it may surround. Specifically, the protrusion 23h causes the inner peripheral surface of the air passage 23a from the vicinity of the outer end portion 123a on the arrow Y1 direction side to the vicinity of the outer end portion 223a on the arrow X1 direction side of the inner peripheral surface of the air passage 23a. The vicinity of the outer end 323a on the arrow Y2 direction side is surrounded by an arc from the outside so as to follow the outer edge of the circular cylindrical air passage 23a. Further, by the protrusion 23h, from the vicinity of the outer end portion 123b on the inner peripheral surface of the air passage 23b on the arrow Y1 direction side to the vicinity of the outer end portion 223b on the arrow X2 direction side, the direction of the inner peripheral surface of the air passage 23b in the direction of arrow Y2 The vicinity of the outer end portion 323b on the side is surrounded by an arc from the outside so as to follow the outer edge of the circular cylindrical air passage 23b.

  Further, the protruding portion 23h surrounds a part of the outer side of the screw hole 23c in the direction of the arrow Y1 along the outer edge of the circular screw hole 23c in an arc shape from the outer side. Further, the protruding portion 23h has an arc shape from the outside so that a part on the arrow X1 direction side and a part on the arrow Y2 direction side outside the screw hole 23d are along the outer edge of the circular screw hole 23d. Is surrounded by Further, the protruding portion 23h causes the outer side of the screw hole 23e to have a part on the arrow X2 direction side and a part on the arrow Y2 direction side along the outer edge of the circular screw hole 23e. Is surrounded by

  In addition, as shown in FIG. 5, locking portions 22 i each including a stepped portion are formed inside the air passages 22 a and 22 b of the left fixed portion 22, respectively, and the air passages 23 a and 23 b of the right fixed portion 23 are formed. Locking portions 23i each including a stepped portion are formed inside 23b. These locking portions 22i and 23i are configured such that a lower end portion (see FIG. 18) of a left funnel portion 39 described later and a lower end portion of a right funnel portion 40 described later are fitted.

  Further, as shown in FIG. 1, a front cowl 26 including an upper cowl 26a and a lower cowl 26b is provided so as to cover the front side of the vehicle body. A cleaner box 27 to which air from the air introduction passage 4 is supplied is disposed between the main frames 3.

  As shown in FIG. 2, the cleaner box 27 is arranged on the upper side (arrow Z1 direction side) of the throttle body 18 of the engine 14, and is constituted by an upper box portion 28 and a lower box portion 29. . That is, the cleaner box 27 is formed by fixing the upper box portion 28 and the lower box portion 29 to each other by the plurality of fastening screws 30. An air filter 31 for purifying the air supplied from the air introduction passage 4 is disposed in the cleaner box 27. The air filter 31 is fixed in a state of being sandwiched between the upper box portion 28 and the lower box portion 29 of the cleaner box 27.

  An injector 32 is attached to the upper box portion 28 of the cleaner box 27. A resonator 28a is formed at the front portion (the portion on the arrow Y1 direction side) of the upper box portion 28, and the inside and the outside of the resonator 28a are connected by a connecting portion 28b. In addition, screw insertion holes 28 c for fixing the lower box portion 29 of the cleaner box 27 with the fastening screws 30 are formed on the outer peripheral surface of the upper box portion 28 at regular intervals. The upper box portion 28 is provided with a groove portion 28d into which the air filter 31 is fitted.

  As shown in FIG. 9, circular cylindrical fitting holes 29 a, 29 b, 29 c, and 29 d are formed in the rear portion (arrow Y <b> 2 direction side) of the lower box portion 29. Further, the fitting holes 29a to 29d are provided so as to be aligned in a line from the arrow X1 direction side to the arrow X2 direction side. As shown in FIG. 4, the lower end portion of the left funnel portion 39 described later is configured to be fitted into the fitting holes 29a and 29b, and the lower end portion of the right funnel portion 40 described later is inserted into the fitting holes 29c and 29c. It is configured to be fitted into 29d. Further, the fitting holes 29a and 29b are provided so as to correspond to the air passages 22a and 22b of the left fixed portion 22, respectively. The fitting holes 29c and 29d are provided so as to correspond to the air passages 23a and 23b of the right-side fixing part 23, respectively.

  Further, as shown in FIG. 9, the lower box portion 29 has circular screw insertion holes 29e, 29f, 29g, 29h, 29i and 29j through which screws 41 described later pass, and hook locking portions 29k and 29l. And are formed. Specifically, as shown in FIG. 11, the hook engaging portion 29k is fitted on the line C1 connecting the center O5 of the fitting hole 29a and the center O6 of the fitting hole 29b and with the center O5 of the fitting hole 29a. The hole 29b is formed at a substantially middle position with respect to the center O6. Also, as shown in FIG. 12, the hook engaging portion 29l is on a line D1 connecting the center O7 of the fitting hole 29c and the center O8 of the fitting hole 29d, and between the center O7 of the fitting hole 29c and the fitting hole 29d. It is formed at a position substantially in the middle of the center O8. Further, as shown in FIG. 10, the hook engaging portions 29k and 29l are provided on the lower box by hooks (not shown) of a left funnel portion 39 (see FIG. 4) to be described later and a right funnel portion 40 (see FIG. 4) to be described later. It is configured to be inserted from the inner surface side of the portion 29 and to be locked on the outer surface side of the lower box portion 29.

  Moreover, in this embodiment, as shown in FIG. 11, the screw insertion hole 29e and the fitting hole 29a and the fitting hole correspond to the screw hole 22c (see FIG. 4) of the left side fixing portion 22 (see FIG. 4). 29b is formed on the arrow Y1 direction side. Further, the screw insertion hole 29e is formed on a center line C2 that passes through substantially the middle between the fitting hole 29a and the fitting hole 29b and is orthogonal to the line C1. Further, the screw insertion hole 29e is in contact with the outer end portion 129a on the arrow Y1 direction side of the inner peripheral surface of the fitting hole 29a and the outer end portion 129b on the arrow Y1 direction side of the inner peripheral surface of the fitting hole 29b and at the center line C2. It is configured to be positioned on the inner side (arrow Y2 direction side) than the substantially vertical tangent line C3 (the line connecting the outer end portion 129a and the outer end portion 129b). The outer end portions 129a and 129b are examples of the “second outer end portion” in the present invention.

  Further, the screw insertion hole 29f corresponds to the screw hole 22d (see FIG. 4) of the left side fixing portion 22 (see FIG. 4), and the outer end 229a on the inner side of the fitting hole 29a on the arrow X1 direction side. It is provided in the vicinity. Furthermore, the screw insertion hole 29f is configured to be located on a tangent line C4 (a line extending perpendicularly from the outer end portion 229a) that is in contact with the outer end portion 229a and substantially parallel to the center line C2, and the fitting hole 29a. The outer peripheral portion 329a of the inner peripheral surface on the arrow Y2 direction side and the outer end portion 329b of the inner peripheral surface of the fitting hole 29b on the arrow Y2 direction side and a tangent line C5 (outer end portion 329a and It is configured to be located on the inner side (arrow Y1 direction side) than the line connecting the outer end portions 329b. The outer end portion 229a is an example of the “first outer end portion” in the present invention, and the outer end portions 329a and 329b are examples of the “second outer end portion” in the present invention.

  Further, the screw insertion hole 29g corresponds to the screw hole 22e (see FIG. 4) of the left fixing portion 22 (see FIG. 4), and the outer end 229b on the inner peripheral surface of the fitting hole 29b on the arrow X2 direction side. It is provided in the vicinity. Furthermore, the screw insertion hole 29g is configured to be located on the inner side (arrow X1 direction side) of a tangent line C6 (a line extending perpendicularly from the outer end portion 229b) that is in contact with the outer end portion 229b and substantially parallel to the center line C2. And configured to be positioned on the tangent line C5. Further, the screw insertion hole 29f and the screw insertion hole 29g are provided at substantially equal intervals in the opposite directions along the arrow X1 direction and the arrow X2 direction with respect to the center line C2. The outer end portion 229b is an example of the “first outer end portion” in the present invention.

  In the present embodiment, the diagonal line C7 connecting the screw insertion hole 29e and the screw insertion hole 29f is configured to pass in the vicinity of the center O5 of the fitting hole 29a, and the screw insertion hole 29e and the screw insertion hole 29g. A diagonal line C8 is configured to pass near the center O6 of the fitting hole 29b.

  Also, as shown in FIG. 12, the screw insertion hole 29h is formed between the fitting hole 29c and the fitting hole 29d so as to correspond to the screw hole 23c (see FIG. 4) of the right fixing portion 23 (see FIG. 4). It is formed on the arrow Y1 direction side. The screw insertion hole 29h is formed on a center line D2 that passes through substantially the middle between the fitting hole 29c and the fitting hole 29d and is orthogonal to the line D1. Further, the screw insertion hole 29h is in contact with the outer end portion 129c on the inner peripheral surface of the fitting hole 29c on the arrow Y1 direction side and the outer end portion 129d on the inner peripheral surface of the fitting hole 29d on the arrow Y1 direction side and at the center line D2. It is configured to be positioned on a substantially vertical tangent line D3 (a line connecting the outer end portion 129c and the outer end portion 129d). The outer end portions 129c and 129d are examples of the “second outer end portion” in the present invention.

  Further, the screw insertion hole 29i corresponds to the screw hole 23d (see FIG. 4) of the right side fixing portion 23 (see FIG. 4), and the outer end 229c on the inner peripheral surface of the fitting hole 29c on the arrow X1 direction side. It is provided in the vicinity. Further, the screw insertion hole 29i is configured to be positioned on a tangent line D4 (a line extending perpendicularly from the outer end part 229c) that is in contact with the outer end part 229c and substantially parallel to the center line D2, and the fitting hole 29c. The outer peripheral portion 329c of the inner peripheral surface on the arrow Y2 direction side and the outer end portion 329d on the inner peripheral surface of the fitting hole 29d on the arrow Y2 direction side and a tangent line D5 (outer end portion 329c and The outer end portion 329d is connected to a line). The outer end portion 229c is an example of the “first outer end portion” in the present invention, and the outer end portions 329c and 329d are examples of the “second outer end portion” in the present invention.

  Further, the screw insertion hole 29j corresponds to the screw hole 23e (see FIG. 4) of the right fixing portion 23 (see FIG. 4), and the outer end portion 229d on the inner peripheral surface of the fitting hole 29d on the arrow X2 direction side. It is provided in the vicinity. Furthermore, the screw insertion hole 29j is configured to be located on the inner side (arrow X1 direction side) of a tangent line D6 (a line extending perpendicularly from the outer end portion 229d) that is in contact with the outer end portion 229d and substantially parallel to the center line D2. And configured to be positioned on the tangent line D5. Further, the screw insertion hole 29i and the screw insertion hole 29j are provided at substantially equal intervals in the opposite direction along the arrow X1 direction and the arrow X2 direction with respect to the center line D2. The outer end portion 229d is an example of the “first outer end portion” in the present invention.

  In the present embodiment, the diagonal line D7 connecting the screw insertion hole 29h and the screw insertion hole 29i is configured to pass in the vicinity of the center O7 of the fitting hole 29c, and the screw insertion hole 29h and the screw insertion hole 29j. The diagonal line D8 is configured to pass through the vicinity of the center O8 of the fitting hole 29d.

  Moreover, as shown in FIG. 13, a metal collar 29m having a circular shape is fitted into the inner peripheral surface of the circular screw insertion holes 29e to 29j (see FIGS. 11 and 12). The collar 29m is configured to be fitted into the inner peripheral surfaces of circular screw insertion holes 39c, 39d, 39e, 40c, 40d, and 40e (see FIG. 4), which will be described later, and the interior of the collar 29m will be described later. The screw 41 (see FIG. 4) is configured to pass therethrough.

  Further, as shown in FIG. 9, an inlet 29 n that is connected to the air introduction passage 4 (see FIG. 1) and introduces air into the cleaner box 27 is formed in the front portion of the lower box portion 29. . Further, a groove portion 29 o into which the air filter 31 is fitted is formed on the inner surface of the lower box portion 29 that is the inside of the cleaner box 27. In addition, a fixed funnel, which will be described later, is provided on the inner side of the lower box portion 29 in the direction of the arrow Y1 of the screw insertion hole 29e and the screw insertion hole 29h and in the direction of the arrow Y2 of the screw insertion hole 29e and the screw insertion hole 29h, respectively. Positioning portions 29p and 29q having a function as positioning when the lower end portion of 35 (see FIG. 6) is fitted are formed.

  Further, as shown in FIGS. 9 and 10, the upper box portion 28 (see FIG. 2) of the cleaner box 27 is attached to the outer peripheral surface of the lower box portion 29 at regular intervals at the fastening screws 30 (see FIG. 2). A screw hole portion 29r for fixing by means of is formed so as to correspond to the screw insertion hole 28c (see FIG. 2).

  Further, in the present embodiment, as shown in FIG. 10, the left seal groove portion 29 s is formed in a circumferential shape on the outer surface (lower side surface) of the lower box portion 29 on the arrow X1 direction side. The left-side seal groove 29s is provided so as to correspond to the circumferential protrusion 22h (see FIG. 4) of the left-side fixing portion 22 (see FIG. 4). A ring 33 is fitted in a circumferential shape. As a result, as shown in FIG. 4, when the throttle body 18 and the lower box portion 29 are fastened by a screw 41, which will be described later, the protrusion 22h is fitted into the left seal groove portion 29s of the lower box portion 29. The O-ring 33 is configured to be pressed from below. The left seal groove 29s is an example of the “groove” in the present invention, and the O-ring 33 is an example of the “seal member” in the present invention.

  Further, in the present embodiment, as shown in FIG. 11, the left seal groove 29s is formed around a part of the periphery of the circular cylindrical fitting holes 29a and 29b and the periphery of the circular screw insertion holes 29e, 29f and 29g. A part is surrounded by an arc from the outside. Specifically, from the vicinity of the outer end portion 129a on the arrow Y1 direction side of the inner peripheral surface of the fitting hole 29a to the vicinity of the outer end portion 229a on the arrow X1 direction side by the left seal groove 29s, the inner peripheral surface of the fitting hole 29a. The vicinity of the outer end 329a on the arrow Y2 direction side is surrounded by an arc from the outside so as to follow the outer edge of the circular cylindrical fitting hole 29a. Further, by the left seal groove 29s, from the vicinity of the outer end portion 129b on the arrow Y1 direction side of the inner peripheral surface of the fitting hole 29b to the vicinity of the outer end portion 229b on the arrow X2 direction side, the arrow Y2 on the inner peripheral surface of the fitting hole 29b. The vicinity of the outer end portion 329b on the direction side is surrounded by an arc from the outside so as to follow the outer edge of the circular cylindrical fitting hole 29b.

  Further, the left seal groove 29s surrounds a part of the outer side of the screw insertion hole 29e in the direction of the arrow Y1 along the outer edge of the circular screw insertion hole 29e in an arc shape. In addition, the left seal groove 29s causes the outer side of the screw insertion hole 29f to have a part on the arrow X1 direction side and a part on the arrow Y2 direction side along the outer edge of the circular screw insertion hole 29f. Is surrounded by an arc. In addition, the left seal groove 29s allows the outer side of the screw insertion hole 29g to have a part on the arrow X2 direction side and a part on the arrow Y2 direction side along the outer edge of the circular screw insertion hole 29g. Is surrounded by an arc.

  Further, in the present embodiment, as shown in FIG. 10, the right seal groove 29t is formed in a circumferential shape on the outer surface (lower side) of the lower box portion 29 in the arrow X2 direction side. The right seal groove 29t is provided so as to correspond to the circumferential protrusion 23h (see FIG. 4) of the right fixing part 23 (see FIG. 4). A ring 34 is fitted in a circumferential shape. As a result, as shown in FIG. 4, when the throttle body 18 and the lower box portion 29 are fastened by a screw 41, which will be described later, the protrusion 23h is fitted into the right seal groove portion 29t of the lower box portion 29. The O-ring 34 is configured to be pressed from below. The right seal groove 29t is an example of the “groove” in the present invention, and the O-ring 34 is an example of the “seal member” in the present invention.

  In the present embodiment, as shown in FIG. 12, the right seal groove 29t has a part around the circular cylindrical fitting holes 29c and 29d and a part around the circular screw insertion holes 29h, 29i and 29j. A part is surrounded by an arc from the outside. Specifically, from the vicinity of the outer end portion 129c on the arrow Y1 direction side of the inner peripheral surface of the fitting hole 29c to the vicinity of the outer end portion 229c on the arrow X1 direction side by the right seal groove portion 29t, the inner peripheral surface of the fitting hole 29c. The vicinity of the outer end 329c on the arrow Y2 direction side is surrounded by an arc from the outside so as to follow the outer edge of the circular cylindrical fitting hole 29c. Further, by the right seal groove 29t, from the vicinity of the outer end portion 129d on the arrow Y1 direction side of the inner peripheral surface of the fitting hole 29d to the vicinity of the outer end portion 229d on the arrow X2 direction side, the arrow Y2 on the inner peripheral surface of the fitting hole 29d. The vicinity of the outer end portion 329d on the direction side is surrounded by an arc from the outside so as to follow the outer edge of the circular cylindrical fitting hole 29d.

  Further, the right seal groove 29t surrounds a part of the outer side of the screw insertion hole 29h in the direction of the arrow Y1 along the outer edge of the circular screw insertion hole 29h. In addition, the right seal groove 29t allows the outer side of the screw insertion hole 29i to have a part on the arrow X1 direction side and a part on the arrow Y2 direction side along the outer edge of the circular screw insertion hole 29i. Is surrounded by an arc. In addition, the right seal groove portion 29t allows the outer side of the screw insertion hole 29j to have a part on the arrow X2 direction side and a part on the arrow Y2 direction side along the outer edge of the circular screw insertion hole 29j. Is surrounded by an arc.

  In the present embodiment, the circumferential O-rings 33 and 34, the circumferential left-side seal groove 29s and the right-side sealing groove 29t into which the circumferential O-rings 33 and 34 are fitted, and the circumferential O-rings 33 and 34 are inserted. A seal portion T (see FIG. 18) is constituted by the circumferential protrusions 22h and 23h that press from below.

  In addition, as shown in FIG. 2, in the cleaner box 27, a fixed funnel 35, a movable funnel 36, and a funnel moving mechanism 37 that are arranged on the upstream side of the engine 14 and on the downstream side of the air filter 31. And are provided. A motor 38 that drives the funnel moving mechanism 37 is disposed below the lower box 29 of the cleaner box 27.

  The fixed funnel 35 has a function of guiding the purified air in the cleaner box 27 to the intake port 17a. The movable funnel 36 is disposed on the intake side (upstream side) of the fixed funnel 35 and has a function of guiding purified air in the cleaner box 27 together with the fixed funnel 35 to the intake port 17a. In addition, the funnel moving mechanism unit 37 supports the movable funnel 36 so that it can be moved away from or in contact with the fixed funnel 35 along the direction (air introduction direction) for guiding the air of the fixed funnel 35. It has the function to do.

  As shown in FIG. 3, when the movable funnel 36 is at a position separated from the fixed funnel 35 by the funnel moving mechanism 37 and the motor 38 (position at high speed), it is connected from the cleaner box 27 to the cylinder 16. The intake passage includes a fixed funnel 35, a throttle body 18, and an intake port 17a. On the other hand, as shown in FIG. 2, when the movable funnel 36 is in a position (position at a low speed) in contact with the fixed funnel 35 by the funnel moving mechanism 37 and the motor 38, the cleaner box 27 is connected to the cylinder 16. The intake passage is configured by a movable funnel 36, a fixed funnel 35, a throttle body 18, and an intake port 17a.

  Further, as shown in FIGS. 14 and 15, the fixed funnel 35 has a structure in which two adjacent fixed funnels 35 are connected and integrally formed. That is, in the present embodiment, two adjacent fixed funnels 35 are integrated, and a left funnel portion 39 and a right funnel portion 40 are formed, respectively. Further, as shown in FIG. 2, the lower box portion 29 is located below the left funnel portion 39 and the right funnel portion 40 (in the direction of the arrow Z2), and the throttle body 18 is located below the lower box portion 29. Configured to be located. The left funnel portion 39 and the right funnel portion 40 are examples of the “funnel” of the present invention.

  As shown in FIG. 14, the left funnel portion 39 is formed with circular cylindrical air passages 39a and 39b through which air flows, and as shown in FIG. Circular cylindrical air passages 40a and 40b through which air flows are formed. Further, as shown in FIG. 14, the air passage 39 a is formed on the arrow X 1 direction side of the left funnel portion 39, and the air passage 39 b is formed on the arrow X 2 direction side of the left funnel portion 39. Further, as shown in FIG. 15, the air passage 40 a is formed on the arrow X 1 direction side of the right funnel portion 40, and the air passage 40 b is formed on the arrow X 2 direction side of the right funnel portion 40. The air passages 39a, 39b, 40a and 40b are examples of the “second air passage” in the present invention.

  Further, as shown in FIG. 14, the left funnel portion 39 is formed with screw insertion holes 39c, 39d and 39e. Specifically, the screw insertion hole 39c includes a screw hole 22c (see FIG. 4) in the left side fixing portion 22 (see FIG. 4) and a screw insertion hole 29e (see FIG. 4) in the lower box portion 29 (see FIG. 4). Is formed on the arrow Y1 direction side between the air passage 39a and the air passage 39b. Further, the screw insertion hole 39d (see FIG. 16) has an air passage so as to correspond to the screw hole 22d (see FIG. 4) of the left fixed portion 22 and the screw insertion hole 29f (see FIG. 4) of the lower box portion 29. 39a is provided on the arrow X1 direction side. Further, the screw insertion hole 39e is in the direction of the arrow X2 of the air passage 39b so as to correspond to the screw hole 22e (see FIG. 4) of the left side fixing portion 22 and the screw insertion hole 29g (see FIG. 4) of the lower box portion 29. On the side.

  As shown in FIG. 15, the right funnel portion 40 is formed with screw insertion holes 40c, 40d and 40e. Specifically, the screw insertion hole 40c includes a screw hole 23c (see FIG. 4) in the right side fixing portion 23 (see FIG. 4) and a screw insertion hole 29h (see FIG. 4) in the lower box portion 29 (see FIG. 4). Is formed on the arrow Y1 direction side between the air passage 40a and the air passage 40b. Further, the screw insertion hole 40d is in the direction of arrow X1 of the air passage 40a so as to correspond to the screw hole 23d (see FIG. 4) of the right side fixing portion 23 and the screw insertion hole 29i (see FIG. 4) of the lower box portion 29. On the side. Further, the screw insertion hole 40e is in the direction of the arrow X2 of the air passage 40b so as to correspond to the screw hole 23e (see FIG. 4) of the right side fixing portion 23 and the screw insertion hole 29j (see FIG. 4) of the lower box portion 29. On the side.

  Further, as shown in FIGS. 14 and 15, on the arrow Y1 direction side of the left funnel portion 39 and the right funnel portion 40, arm portions 39f and 40f extending upward (in the direction of arrow Z1 in FIG. 2) are provided on the left funnel portion. 39 and the right funnel 40 are formed integrally. The arm portions 39f and 40f are configured to support a funnel moving mechanism portion 37 for moving the movable funnel 36, as shown in FIGS.

  Here, in the present embodiment, as shown in FIG. 17, the left funnel portion 39 is configured to be fastened to the left fixing portion 22 of the throttle body 18 via the lower box portion 29 by screws 41. Yes. And as shown in FIG. 4, the fastening position S fastened by the screw 41 is the first fastening position where the first fastening portion constituted by the screw insertion hole 39c, the screw insertion hole 29e, and the screw hole 22c is located. A second fastening position S2 in which a second fastening portion constituted by a position S1, a screw insertion hole 39d, a screw insertion hole 29f, and a screw hole 22d is located; a screw insertion hole 39e; a screw insertion hole 29g; There is a third fastening position S3 where a third fastening portion constituted by the screw hole 22e is located. Further, a left air passage U1 including an air passage 39a, a fitting hole 29a, and an air passage 22a, and a right air passage U2 including an air passage 39b, the fitting hole 29b, and the air passage 22b are formed. The screw 41 is an example of the “fastening member” in the present invention.

  In the present embodiment, as shown in FIG. 18, the left funnel portion 39, the lower box portion 29, and the left fixing portion 22 of the throttle body 18 are fastened by screws 41 at the second fastening position S2. As a result, the second fastening portion and the left air passage U1 at the second fastening position S2 are connected to the seal portion T (the O-ring 33, the left seal groove portion 29s, and the protruding portion 22h that are located outside in the radial direction of the left air passage U1. ) To be sealed from the outside. Thereby, even if air, blow biole, fuel, and the like in the lower box portion 29 of the cleaner box 27 leak into the second fastening portion at the second fastening position S2, the sealing portion T blocks the air. It accumulates in a screw hole 22d formed by a bag-shaped recess, and flows out to the left air passage U1 through a joint between the cleaner box 27 and the left fixing portion 22. At this time, even if blow-boil and fuel flow into the left air passage U1, there is no problem because blow-boil and fuel are always present in the left air passage U1. The same applies to the first fastening position S1 and the third fastening position S3.

  The right funnel portion 40, the lower box portion 29 in which the O-ring 34 is fitted, and the right fixing portion 23 of the throttle body 18 are configured to be fastened by screws 41. And as shown in FIG. 4, the fastening position S fastened by the screw 41 is the first fastening position where the first fastening portion constituted by the screw insertion hole 40c, the screw insertion hole 29h, and the screw hole 23c is located. A second fastening position S2 in which a second fastening portion constituted by a position S1, a screw insertion hole 40d, a screw insertion hole 29i, and a screw hole 23d is located; a screw insertion hole 40e; a screw insertion hole 29j; There is a third fastening position S3 where a third fastening portion constituted by the screw hole 23e is located. Further, a left air passage U1 including the air passage 40a, the fitting hole 29c, and the air passage 23a, and a right air passage U2 including the air passage 40b, the fitting hole 29d, and the air passage 23b are formed. Here, the first fastening position S1, the second fastening position S2, and the third fastening position S3 of the right funnel portion 40, the lower box portion 29 in which the O-ring 34 is fitted, and the right fixing portion 23 of the throttle body 18 are provided. Are the same configurations as the first fastening position S1, the second fastening position S2, and the third fastening position S3 of the left funnel portion 39, the lower box portion 29, and the left side fixing portion 22 of the throttle body 18, respectively. . Further, the left air passage U1 including the air passage 40a, the fitting hole 29c and the air passage 23a, and the right air passage U2 including the air passage 40b, the fitting hole 29d and the air passage 23b are respectively the air passage 39a and the fitting hole 29a. The left air passage U1 is composed of the air passage 22a, and the right air passage U2 is composed of the air passage 39b, the fitting hole 29b, and the air passage 22b. Therefore, the description is omitted.

  In the present embodiment, as described above, the seal portion T (the O-rings 33 and 34, the left seal groove portion 29s and the right seal groove portion 29t, and the protruding portions 22h and 23h) is connected to the fastening position S of the screw 41, the left air passage. By arranging so as to surround the outside of U1 and the right air passage U2, the fastening position S is located inside the seal portion T. Therefore, it is possible to prevent the blow biole and fuel from bleeding through the fastening portion between the cleaner box 27 and the throttle body 18.

  Further, in the present embodiment, as described above, by providing the throttle body 18 with the screw holes 22c, 22d, 22e, 23c, 23d, and 23e formed of bag-like recesses to which the tip of the screw 41 is fastened, Through the end of the screw holes 22c to 22e and 23c to 23e opposite to the insertion side of the screw 41, it is possible to prevent the blow bioils and fuel inside the lower box portion 29 from flowing out. .

  In the present embodiment, as described above, the sealing portion T surrounds the joint portion between the lower box portion 29 and the throttle body 18 in a circumferential shape, and is fastened along the fastening position S of the screw 41. By arrange | positioning so that the circumference | surroundings of the vicinity of S may be enclosed in circular arc shape from the outer side, the circumference | surroundings of the fastening position S can be sealed from the outer side by the seal part T. Therefore, in the fastening position S, it is possible to further suppress the blow-out biofuel and fuel inside the lower box portion 29 (cleaner box 27) from flowing out.

  Further, in the present embodiment, as described above, the seal portion T is arranged in an arc shape so as to follow a part of the outer edges of the circular cylindrical left air passage U1 and the right air passage U2, and the screw 41 is fastened. In the vicinity of the position S, the seal portion T is arranged in the vicinity of the fastening position S, and the left air passage U1 and the right air passage U2 are arranged in an arc shape so as to surround the fastening position S from the outside. It can be sealed from the outside at a close position. Therefore, it is possible to more effectively prevent the blow bioils and fuel in the lower box portion 29 (cleaner box 27), the left air passage U1, and the right air passage U2 from flowing out.

  In the present embodiment, as described above, the first fastening position S1 is provided on the center lines A2, B2, C2, and D2 between the left air passage U1 and the right air passage U2, and the second fastening position S2 is Provided in the vicinity of the outer end portion of the left air passage U1 on the arrow X1 direction side and providing the third fastening position S3 in the vicinity of the outer end portion of the right air passage U2 on the arrow X2 direction side, The joint between the lower box portion 29 and the throttle body 18 in the periphery of the air passage U2 can be joined with a certain amount of uniform force. As a result, the inside of the lower box portion 29 (cleaner box 27), the blow bioils and the fuel in the left air passage U1 and the right air passage U2 have a weak joint force at the joint portion between the lower box portion 29 and the throttle body 18. However, it is possible to suppress the outflow from the outside.

  In the present embodiment, as described above, the first fastening position S1 is provided on the center lines A2, B2, C2, and D2, and the diagonal lines A7, B7 connecting the first fastening position S1 and the second fastening position S2. , C7 and D7 pass through the vicinity of the centers O1, O3, O5 and O7 of the left air passage U1, and diagonal lines A8, B8, C8 connecting the first fastening position S1 and the third fastening position S3, and D8 is configured to pass through the vicinity of the centers O2, O4, O6 and O8 of the right air passage U2. Thereby, the joint part of the lower box part 29 and the throttle body 18 in the periphery of the left air passage U1 and the right air passage U2 can be joined by substantially equal force. As a result, the blow bioils and fuel in the lower box portion 29 (cleaner box 27), the left air passage U1 and the right air passage U2 have a weak joint force at the joint portion between the lower box portion 29 and the throttle body 18. However, it is possible to further suppress the outflow from the outside.

  In the present embodiment, as described above, the first fastening position S1 is provided on the center lines A2, B2, C2, and D2, and the second fastening position S2 and the third fastening position S3 are each in the direction of the arrow X1. And the second fastening position S2 and the third fastening position S3 with respect to the center lines A2, B2, C2, and D2, respectively, by providing them at positions that are substantially equidistant from each other in the opposite direction along the arrow X2 direction. It will be located approximately symmetrically. Thereby, substantially the whole joining part of the lower box part 29 and the throttle body 18 can be joined by substantially equal force. As a result, the blow bioils and fuel in the lower box portion 29 (cleaner box 27), the left air passage U1 and the right air passage U2 have a weak joint force at the joint portion between the lower box portion 29 and the throttle body 18. However, it is possible to further suppress the outflow from the outside.

  In the present embodiment, as described above, the fastening position S of the screw 41 is positioned on or inside the tangent lines A3, A5, B3, B5, C3, C5, D3 and D5, and the tangent lines A4, A6, By positioning on or inside B4, B6, C4, C6, D4 and D6, the fastening position S can be provided close to the left air passage U1 and the right air passage U2. Therefore, it is possible to increase the joining force at the joint portion between the lower box portion 29 and the throttle body 18. Thereby, blow bioils and fuel in the lower box portion 29 (cleaner box 27), the left air passage U1 and the right air passage U2 flow out to the outside from the joint portion between the lower box portion 29 and the throttle body 18. Can be further suppressed.

  In the present embodiment, as described above, the seal portion T is provided in the circumferential O-rings 33 and 34 and the lower box portion 29, and the left-side seal groove portion into which the circumferential O-rings 33 and 34 are fitted. 29s and the right seal groove 29t, and circumferential protrusions 22h and 23h provided on the throttle body 18 and pressing the circumferential O-rings 33 and 34 fitted in the left seal groove 29s and the right seal groove 29t from below. It comprises so that it may have. Accordingly, it is possible to suppress the blow bioils and fuel inside the lower box portion 29 (cleaner box 27) reaching the seal portion T from being accumulated in the seal portion T via the fastening position S. Thereby, it is possible to prevent oil, fuel, and the like inside the lower box portion 29 (cleaner box 27) from overflowing from the seal portion T and flowing out to the outside.

  Further, in the present embodiment, as described above, the seal portion T is connected to the left air passage U1 with respect to the fastening position S between the left funnel portion 39 and the right funnel portion 40, the cleaner box 27, and the throttle body 18, and The automatic configuration is configured to fasten the left funnel portion 39 and the right funnel portion 40, the cleaner box 27, and the throttle body 18 by being configured to be located outside in the radial direction of the right air passage U2. In the two-wheeled vehicle 1, it is possible to prevent the blow biole and fuel from oozing out from the fastening position S between the left funnel portion 39 and the right funnel portion 40, the cleaner box 27, and the throttle body 18.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, an example in which the present invention is applied to a motorcycle has been shown. However, the present invention is not limited to this, and for example, a vehicle including a throttle body and a cleaner box may be a tricycle and an ATV (All The present invention can also be applied to vehicles other than motorcycles such as Terrain Vehicle.

  Moreover, in the said embodiment, although the seal part showed the example which consists of an O-ring, the left side seal groove part and right side seal groove part by which an O-ring is fitted, and a protrusion part, this invention is not restricted to this, lower side A structure in which an O-ring and a groove portion are provided without providing a protruding portion may be employed as long as the joint portion between the box portion and the throttle body can be sealed.

  In the above embodiment, the left side seal groove portion and the right side seal groove portion (groove portion) are provided in the lower box portion, and the circumferential protrusion is provided in the throttle body, but the present invention is not limited thereto, A circumferential protrusion may be provided on the lower box portion, and a groove may be provided on the throttle body.

  Moreover, although the example which used the screw as a fastening member was shown in the said embodiment, this invention is not restricted to this, You may use an adhesive material, an engaging member, a crimping member, etc. as a fastening member.

  Moreover, in the said embodiment, although the example which provided three fastening positions, the 1st fastening position, the 2nd fastening position, and the 3rd fastening position, was shown, this invention is not limited to this, A fastening position is one place. Two or four or more locations may be provided.

  Moreover, in the said embodiment, although the example which divided | segmented the cleaner box into the upper and lower sides by the two members of the upper side box part and the lower side box part was shown, this invention is not limited to this, For example, a cleaner box is right and left. You may comprise by the structure divided | segmented and you may comprise by three or more some members. Moreover, you may comprise a cleaner box by one member (single body).

  In the above embodiment, the first fastening position is provided on the center line of the left air passage and the right air passage, and the second fastening position and the third fastening position are the outer end portions of the left air passage and the right air passage. Although the example provided in the vicinity is shown, the present invention is not limited to this, and the fastening position is not particularly limited.

1 is a side view showing an overall structure of a motorcycle according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a state in which a movable funnel of the motorcycle according to the embodiment shown in FIG. 1 is in contact with a fixed funnel. FIG. 2 is a cross-sectional view showing a state where a movable funnel of the motorcycle according to the embodiment shown in FIG. 1 is separated from a fixed funnel. FIG. 2 is an exploded view of a left funnel portion and a right funnel portion, a lower box portion, and a throttle body of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a plan view showing a throttle body of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a plan view showing a left side fixing portion of a throttle body of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a plan view showing a right side fixing portion of a throttle body of the motorcycle according to the embodiment shown in FIG. 1. Fig. 7 is a cross-sectional view showing the vicinity of a screw hole of a left side fixing portion of a throttle body of a motorcycle according to an embodiment, taken along line 100-100 in Fig. 6. FIG. 2 is a plan view seen from the inside of a lower box portion of the motorcycle according to the embodiment shown in FIG. 1. Fig. 2 is a plan view seen from the outside of a lower box portion of the motorcycle according to the embodiment shown in Fig. 1. Fig. 2 is a plan view showing the periphery of a left seal groove portion of a lower box portion of the motorcycle according to the embodiment shown in Fig. 1. Fig. 2 is a plan view showing the periphery of a right seal groove portion of a lower box portion of the motorcycle according to the embodiment shown in Fig. 1. FIG. 12 is a cross-sectional view showing the vicinity of the screw insertion hole of the left seal groove portion of the lower box portion of the motorcycle according to the embodiment, taken along line 200-200 in FIG. FIG. 2 is a plan view showing a left funnel portion of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a plan view showing a right funnel portion of the motorcycle according to the embodiment shown in FIG. 1. FIG. 15 is a cross-sectional view showing the vicinity of a screw insertion hole in a left funnel portion of the motorcycle according to the embodiment, taken along line 300-300 in FIG. 14. FIG. 2 is an exploded cross-sectional view showing the vicinity of a fastening position of the motorcycle according to the embodiment shown in FIG. 1. FIG. 2 is a cross-sectional view showing a periphery of a fastening position of the motorcycle according to the embodiment shown in FIG. 1.

Explanation of symbols

1 Motorcycle (vehicle)
14 Engine 18 Throttle body 22a, 22b, 23a, 23b Air passage (first air passage)
22c, 22d, 22e, 23c, 23d, 23e Screw hole (body side fastening part)
22h, 23h Protrusion 26 Lower box (cleaner box)
29s Left side seal groove (groove)
29t Right side seal groove (groove)
33, 34 O-ring (seal member)
39 Left Funnel (Funnel)
39a, 39b, 40a, 40b Air passage (second air passage)
40 Right side funnel section (funnel)
41 Screw (fastening member)
122a, 322a, 122b, 322b, 123a, 323a, 123b, 323b, 129a, 329a, 129b, 329b, 129c, 329c, 129d, 329d Outer end (second outer end)
222a, 222b, 223a, 223b, 229a, 229b, 229c, 229d Outer end (first outer end)
A2, B2, C2, D2 Center line S Fastening position S1 First fastening position S2 Second fastening position S3 Third fastening position T Seal portion U1 Left air passage (air passage)
U2 Right air passage (air passage)

Claims (11)

A throttle body including a first air passage that constitutes an air passage through which air flows through the engine;
A cleaner box that is joined to the throttle body and allows clean air to flow through the throttle body;
A fastening member for fastening the cleaner box and the throttle body outside the air passage;
A seal portion for sealing a joint portion between the cleaner box and the throttle body;
The seal part includes a circumferential seal member,
The circumferential seal member is disposed so as to surround the outside of the fastening position and the air passage of the fastening member Rutotomoni, are arranged so as to surround it circumferentially along said engaged position of said fastening member, vehicle.   2. The vehicle according to claim 1, wherein the throttle body includes a body side fastening portion including a bag-like concave portion to which a distal end portion of the fastening member is fastened.   The seal portion surrounds the joint portion between the cleaner box and the throttle body in a circumferential shape, and is disposed so as to surround the vicinity of the fastening position in an arc shape from the outside along the fastening position of the fastening member. The vehicle according to claim 1, wherein The air passage has a circular cylindrical shape, and is provided to connect the cleaner box and the throttle body,
The seal portion is arranged in an arc shape along a part of the outer edge of the circular cylindrical air passage, and surrounds the fastening position from the outside around the fastening position of the fastening member. The vehicle according to claim 3, which is arranged in an arc shape. The air passage has a circular cylindrical shape, and a pair is provided so as to connect the cleaner box and the throttle body,
The fastening position of the fastening member is provided at three locations, a first fastening position, a second fastening position, and a third fastening position,
The first fastening position is provided on a center line extending perpendicularly to a line passing through the center of the pair of air passages, and the second fastening position and the third fastening position are defined by the pair of air passages. The vehicle according to claim 1, which is provided in the vicinity of both outer end portions.   A straight line connecting the first fastening position and the second fastening position is configured to pass near the center of one of the air passages, and a straight line connecting the first fastening position and the third fastening position. The vehicle according to claim 5, wherein the vehicle is configured to pass near the center of the other air passage.   The second fastening position and the third fastening position are respectively positioned at substantially equal intervals in opposite directions along a direction adjacent to the pair of air passages with respect to a center line between the pair of air passages. The vehicle according to claim 5, wherein the vehicle is provided. The air passage has a circular cylindrical shape, and a pair is provided so as to connect the cleaner box and the throttle body,
The fastening position of the fastening member is a line extending perpendicularly to the adjacent direction from the first outer end portion of the air passage in a direction in which the pair of air passages are adjacent to each other in a plan view, or the first outside. The vehicle according to claim 1, wherein the vehicle is located on an inner side of a line extending from an end portion perpendicular to the adjacent direction. The air passage has a circular cylindrical shape, and a pair is provided so as to connect the cleaner box and the throttle body,
The fastening position of the fastening member is a line connecting the second outer end portions of the pair of air passages in a direction perpendicular to the direction in which the pair of air passages are adjacent to each other in a plan view, The vehicle according to claim 1, wherein the vehicle is located inside a line connecting the two outer end portions.   The seal portion includes a circumferential seal member, a groove portion provided in the cleaner box and into which the circumferential seal member is fitted, and the circumferential seal provided in the throttle body and fitted into the groove portion. The vehicle according to claim 1, further comprising a circumferential protrusion that presses the member from below. A funnel that includes a second air passage that constitutes the air passage, and is fastened to the throttle body via the cleaner box by the fastening member;
The said seal | sticker part is comprised so that it may be located in the radial direction of the said air path with respect to the fastening position of the said funnel, the said cleaner box, and the said throttle body. vehicle.

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