JP2016044668A - Vehicular suction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular suction device suppressing increase in the number of components and cost, preventing increase in size of the vehicle, and preventing interference with peripheral components by suppressing oscillation of a resonator.SOLUTION: A vehicular suction device includes: a suction passage 29 that is provided in an internal combustion engine 12 mounted on a vehicle 1, and through the inside of which intake air passes; and a resonator 40 that communicates with the middle of the suction passage 29 and suppresses occurrence of suction noise due to a resonance phenomenon. In the vehicular suction device, the suction passage 29 comprises a suction passage member 30 formed by an elastically deformable resin member, and to the suction passage member 30, integrally formed is a buffer part 37d extending between the resonator 40 and peripheral components 2c arranged around the resonator 40.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a vehicle intake device.

  A conventional vehicle air intake apparatus has a technology in which a connection port of a resonator is connected to a connecting tube to which an air cleaner is connected, and a part of the resonator is engaged and fixed to the connecting tube (see Patent Document 1).

  In many cases, such a connecting tube is an elastically deformable member made of a resin. Therefore, if the connecting port is only supported, the connecting tube may shake greatly depending on the running of the vehicle, and the peripheral parts arranged around the connecting tube. There is a risk of contact. For this reason, measures may be taken such as fixing the resonator mounting position to peripheral parts other than the connecting tube and adding a fixed part, or arranging the peripheral parts apart so that they do not touch even if the resonator shakes greatly. (For example, see Patent Document 1).

  However, in order to newly add a fixed portion between the resonator and the peripheral component, it is necessary to elastically support the resonator due to a difference in vibration cycle between the connecting tube and the peripheral component, which causes a problem of an increase in the number of components and an increase in cost. On the other hand, if measures are taken to increase the gap between the resonator and the peripheral components in order not to cause interference with peripheral components, dead space may be created in the layout of the vehicle, which may increase the size of the vehicle. It was.

Japanese Patent No. 4472466

  The present invention has been made in view of such circumstances, and its purpose is to suppress the increase in the number of parts and the cost increase, prevent the enlargement of the vehicle, and suppress the vibration of the resonator to prevent the interference with the peripheral parts. An object of the present invention is to provide a vehicle intake device.

  In order to achieve the above object, the present invention is provided in an internal combustion engine mounted on a vehicle, and is connected to an intake passage through which intake air passes, and is connected in the middle of the intake passage to thereby cause intake by resonance. In a vehicle intake device including a resonator that suppresses generation of sound, the intake passage includes an intake passage member formed of an elastically deformable resin member. The intake passage member includes the resonator and the resonator. The vehicle intake device is characterized in that a buffer portion extending integrally with peripheral components arranged around the vehicle is integrally formed.

  According to such a configuration, while eliminating the connection portion between the resonator and the peripheral component, the vibration of the resonator is suppressed without increasing the number of components by using the intake passage member, and the resonator and the peripheral component Therefore, it is possible to reduce the gap in the vehicle layout, reduce the dead space, and simultaneously reduce the size of the vehicle.

  You may arrange | position the said buffer part so that it may contact | abut both of the said resonator and the said peripheral components, and may be pinched | interposed.

  According to such a configuration, even if there is a gap between the resonator and the peripheral part, there is no gap between the buffer part and the resonator and the buffer part and the peripheral part. Even if the intake passage member vibrates due to the passage, the shock absorber can prevent the resonator from colliding with the peripheral components, and the noise generated by the collision between the resonator and the peripheral components can be suppressed. .

  The peripheral part may be a metal body frame member, the resonator may be made of a resin molding material, and the intake passage member may be a rubber tube.

  According to such a configuration, even if the peripheral part is a metal body frame member, it is a part of the intake passage member made of a rubber tube between the resin resonator and the metal body frame member. Since the buffer portion is disposed, the rubber can prevent the resonator from colliding with the metal body frame member, so that the shock can be absorbed.

  A fuel pipe holding part for holding a fuel pipe connected to the internal combustion engine is formed integrally with the intake passage member, and the fuel pipe holding part is formed to extend between the resonator and the peripheral parts. And it is good also as the said buffer part.

  According to such a configuration, the fuel pipe holding portion formed integrally with the intake passage member can be used to prevent the resonator from shaking, so that the fuel pipe can be used as opposed to the case where the buffer portion is formed independently. The buffer portion can be formed with a minimum improvement by simply changing the shape of the holding portion, and the cost increase can be suppressed.

  The fuel pipe holding portion includes a plurality of hook portions for hooking and holding the fuel pipe, and the plurality of hook portions are arranged along the longitudinal direction of the intake passage member, and alternately in the width direction of the intake passage member. It is good also as a buffer part by extending the said hook part located between the said fuel piping and the said resonator among the said several hook parts.

  According to such a configuration, since the hooking portion located between the fuel pipe and the resonator is extended to form the buffer portion, interference between the fuel pipe and the resonator can be prevented.

  The intake passage member may be provided with a connecting portion communicating with the resonator and a fixing portion for fixing the resonator, and the buffer portion may be provided between the connecting portion and the fixing portion.

  According to such a configuration, the intake passage member is provided with the buffer portion between the connection portion that communicates the resonator with the intake passage member and the fixed portion that fixes the resonator to the intake passage member. As a result, the degree of adhesion between the resonator and the buffer portion can be increased to further improve the buffer effect.

  The hook portion may be integrally provided on a side surface of the fixed portion.

  According to such a configuration, since the hook portion for hooking the fuel pipe is integrally provided using the fixing portion provided in the intake passage member, the protrusion of the hook portion can be integrated using the fixing portion. , Space can be reduced.

  The peripheral part may be provided with a support part that supports the resonator, and the resonator may be provided with a holding part that is held by the support part via an elastic member.

  According to such a configuration, since the holding portion of the resonator is elastically supported by the support portion provided in the peripheral component via the elastic member, the resonator is attached to the peripheral component even when the vibration is large due to the shape of the resonator. Can be firmly fixed.

  According to the present invention, while eliminating the connection portion between the resonator and peripheral components, the vibration of the resonator is suppressed without increasing the number of components by using the intake passage member, and interference between the resonator and the peripheral components is achieved. Therefore, it is possible to reduce the gap in the vehicle layout, reduce the dead space, and simultaneously reduce the size of the vehicle.

1 is a left side view of a motorcycle including an air intake device for a vehicle according to an embodiment of the present invention. It is the principal part enlarged view of FIG. 1 which showed the intake device vicinity. It is the figure which looked at the intake device from the upper part. It is a left view of a resonator. It is a front view of a resonator. It is a perspective view of a connecting tube. It is a principal part enlarged view around the buffer part of a connecting tube. It is a VIII-VIII arrow line view of FIG. It is the IX-IX arrow directional view of FIG. It is a XX arrow line view of FIG. It is a XI-XI arrow line view of FIG. It is a XII-XII arrow line view of FIG. It is principal part sectional drawing of the intake device which looked at the extending | stretching hook part from back. It is a principal part enlarged view of the intake device of the other Example. FIG. 15 is a perspective view of the intake device of FIG.

  Hereinafter, an embodiment of an air intake apparatus according to the present invention will be described with reference to FIGS.

Figure 1 is a left side view of the whole of a motorcycle 1 provided with a suction device 20 for a vehicle according to the present embodiment. In the present specification, the forward and backward directions of the motorcycle 1 are set to the front, and the front, rear, left and right are defined based on the posture facing the front.

  The body frame 2 of the motorcycle 1 is as follows. The vehicle body frame 2 is metallic, and a main frame 2b fixed to the head pipe 2a extends obliquely rearward and downward on the vehicle body center line. A pair of left and right seat rails 2c extends from the approximate center in the front-rear direction of the main frame 2b to the left and right while opening left and right, and a pair of left and right connecting the center of the seat rail 2c and the rear end of the main frame 2b The backstay 2d supports the seat rail 2c.

  In such a body frame 2, a front fork 3 is pivotally supported on the head pipe 2a, a handle 4 extending left and right is attached to the upper end of the front fork 3, a front wheel 5 is pivotally supported on the lower end, and the main frame 2b. A rear fork 6 pivotally supported at the front end by a pivot plate 2f provided at the lower portion of the rear fork extends rearward, and a rear wheel 7 is pivotally supported at the rear end thereof. The rear fork 6 and the center portion of the seat rail 2c are connected to each other. A rear cushion 8 is interposed therebetween. A fuel tank 9 is installed on the seat rail 2c, and a seat 10 is provided above the fuel tank 9 and supported by the seat rail 2c.

  The internal combustion engine 12 mounted on the vehicle body frame 2 is an SOHC type two-valve single-cylinder four-stroke internal combustion engine. The crankshaft 17 is oriented in the vehicle body width direction with respect to the vehicle body so that the cylinder is substantially horizontal. It is tilted and is suspended and mounted on the main frame 2b.

  As shown in FIGS. 1 and 2, in the internal combustion engine 12, a cylinder block 14 and a cylinder head 15 are sequentially stacked in front of a crankcase 13, and are fastened together by bolts (not shown). The front surface of the cylinder head 15 is covered with a head cover 16.

  The crankshaft 17 of the internal combustion engine 12 is rotatably supported by the crankcase 13, and a transmission gear mechanism is configured between a main shaft (not shown) disposed behind the crankshaft 17 and a countershaft. A chain (not shown) is bridged between the counter shaft and the rotating shaft of the rear wheel 7, and the power of the crankshaft is transmitted to the rear wheel 7.

  A cylinder bore (not shown) is formed in the cylinder block 14, a piston (not shown) is slidably fitted in the cylinder bore, and the piston is connected to the crankshaft 17 via a connecting rod (not shown). The head 15 is provided with a combustion chamber (not shown). The combustion energy in the combustion chamber is converted into kinetic energy, and the crankshaft 17 is driven to rotate.

  The cylinder head 15 is formed with one intake valve port (not shown) and one exhaust valve port (not shown) that open on the upper wall surface of the combustion chamber, and is located approximately at the center between the intake valve port and the exhaust valve port. Thus, a spark plug hole (not shown) into which a spark plug (not shown) is inserted is opened. The intake valve port and the exhaust valve port communicate with an intake port (not shown) and an exhaust port (not shown) formed in the cylinder head 15, respectively.

  As shown in FIGS. 1 and 2, the cylinder head 15 is connected to an intake device 20 from the upper side to the rear side of the internal combustion engine 12 so as to communicate with the intake port, and further communicates with the exhaust port. Further, an exhaust device 18 is connected from the lower side to the rear side of the internal combustion engine 12.

  The intake device 20 includes an inlet pipe 21 into which a fuel injection valve 22 is inserted into an intake side flange portion 15a formed around an outlet of an intake port of the cylinder head 15, a throttle body 23 that controls the flow rate of intake air, A connecting tube 30 serving as an intake passage 29 through which intake air passes and an air cleaner 24 that takes in outside air and removes impurities such as dust from the outside air are sequentially connected, and the intake air passing through the intake passage 29 is inserted in the middle of the connecting tube 30. A resonator 40 that suppresses the generation of the intake noise by a resonance phenomenon is connected in communication.

  In the exhaust device 18, an exhaust pipe 19 and a muffler (not shown) are sequentially connected to an exhaust side flange portion 15b formed around the outlet of the exhaust port of the cylinder head 15.

  As shown in FIG. 1, the motorcycle 1 is provided with a fuel tank 9 positioned below the seat 10, and the fuel tank 9 and the fuel injection valve 22 are connected by a fuel pipe 50. The fuel stored in the tank 9 is supplied to the fuel injection valve 22 via the fuel pipe 50. As shown in FIG. 2, the fuel pipe 50 connects the fuel tank 9 and the fuel injection valve 22, covers the fuel hose 50a through which the fuel flows and the fuel hose 50a. The hose cover 50b is provided to prevent the fuel supply from being delayed due to crushing.

  As shown in FIG. 1, the air cleaner 24 into which outside air is taken is located at a substantially center with respect to the vehicle width direction, and is a pair of rear and upper rear sides of the main frame 2b and extending rearward from the main frame 2b. It is disposed in a space surrounded by the main frame 2b, the seat rail 2c, and the back stay 2d so as to be sandwiched between the seat rails 2c and positioned above the back stay 2d.

  As shown in FIG. 2, the air cleaner 24 includes an air cleaner case 24a and a case cover 24c as cases. An air filter 24b for filtering impurities in the outside air is placed on the upper surface of the air cleaner case 24a. A case cover 24c is attached so as to cover the upper surfaces of the air filter 24b and the air cleaner case 24a. The upper part of the case cover 24c is provided with an outside air inlet 24d that opens rearward and takes outside air into the air cleaner 24.

  A connecting tube insertion hole 24e into which the upstream side of the connecting tube 30 is inserted is formed in the lower left oblique front surface of the air cleaner case 24a, and a pair of locking pins 24f protruding from the case surface are provided below the connecting tube insertion hole 24e. Is provided. Further below the air cleaner case 24a, a blow-by gas reduction pipe attachment portion 24g for attaching the blow-by gas reduction pipe 45 is formed to protrude. One end of the blow-by gas reduction pipe 45 is connected to the blow-by gas reduction pipe mounting portion 24g, the other end of the blow-by gas reduction pipe 45 is connected to the internal combustion engine 12, and the blow-by gas in the internal combustion engine 12 is returned to the air cleaner 24. It is like that. Further, a drain hose attachment portion 24h for attaching a drain hose 26 for discharging oil and water accumulated in the air cleaner 24 is provided on the lower surface of the air cleaner case 24a.

  An inlet pipe 21 is attached to an intake side flange portion 15 a formed around the intake passage of the cylinder head 15 of the internal combustion engine 12, and a fuel injection valve 22 is inserted into the inlet pipe 21. A throttle body 23 for controlling the flow rate of intake air is attached to the upstream side. The throttle body 23 and the air cleaner 24 are connected by a connecting tube 30.

  The outside air taken in from the outside air inlet 24d of the air cleaner 24 is filtered for impurities by the air cleaner 24, passes through the connecting tube 30, the flow rate is adjusted by the throttle body 23, and the fuel injection inserted into the inlet pipe 21. It is mixed with the sprayed fuel injected from the valve 22 to form an air-fuel mixture, which is supplied into the intake port and sent to the combustion chamber.

  The air-fuel mixture sent to the combustion chamber is combusted to become exhaust gas, and is exhausted by the exhaust device 18 through the exhaust port 19 passing through the exhaust port and through the muffler to the outside air. Yes.

  As shown in FIGS. 2 and 3, a resonator 40 is connected to the upper part of the downstream side of the connecting tube 30. As shown in FIGS. 4 and 5, the resonator 40 has a pair of left and right right halves 40 a and 40 b formed of a resin molding material. As shown in FIG. 5, the right half 40 a and the left half 40 b are joined together to form a hollow main body 41 and a cylindrical connection 42 for connecting and connecting to the connecting tube 30. Become. Generation of intake sound of the intake air passing through the intake passage 29 in the connecting tube 30 is suppressed by a resonance phenomenon in the main body portion 41 of the cavity.

  The connection part 42 communicates the inside of the main body part 41 and the inside of the connecting tube 30 with the front part of the main body part 41. It extends downward and is formed in a cylindrical shape. The connection part 42 includes a cylindrical connection pipe 42a extending from the main body part 41 and communicating with the inside of the main body part 41, and a protrusion 42b protruding in the circumferential direction is formed at the end of the connection pipe 42a. Has been.

  Further, as shown in FIG. 4, a fixing portion 43 for fixing the resonator 40 to the connecting tube 30 extends downward and is integrally formed at the lower portion of the left half 40 b of the resonator 40. Yes. The fixing portion 43 includes a pair of engagement claws 43a, and an engagement recess 43b cut out in an arc shape is formed between the pair of engagement claws 43a. The distance between the tips of the pair of engagement claws 43a is set to be narrower than the diameter of the arc of the engagement recess 43b, and the engagement shaft portion 34b of the resonator fixing portion 34 of the connecting tube 30 described later is fitted, The rear part of the resonator 40 is fixed to the connecting tube 30.

  The connecting tube 30 is formed of an elastically deformable resin member. For example, a rubber tube is used, and the inside is an intake passage 29 through which outside air from the air cleaner flows. As shown in FIGS. 2 and 3, the connecting tube 30 bypasses the main frame 2b in the portion of the main frame 2b located above the crankcase 13 at the rear of the internal combustion engine 12 when viewed from above the vehicle. It is curved and connected to the connecting tube insertion hole 24e of the air cleaner 24 and the upstream side of the throttle body 23.

  FIG. 6 shows a perspective view of the connecting tube 30 alone. An upstream flange portion 31 is formed in the connecting tube 30 so as to be spaced apart from the upstream end portion 30a by a predetermined distance in the downstream direction. The upstream flange portion 31 includes a flange portion 31a formed so as to protrude from the outer peripheral surface of the connecting tube 30 to a predetermined thickness in the circumferential direction, and a non-rotating protrusion protruding radially from the flange portion 31a. It consists of 31b. The connecting tube 30 is inserted into the air cleaner 24 through the connecting tube insertion hole 24e of the air cleaner case 24a from the upstream end 30a to the boundary between the upstream flange 31 and the upstream surface of the upstream flange 31. Is brought into contact with the surface of the air cleaner case 24a, the anti-rotation projection 31b is engaged with a pair of anti-rotation pins 24f formed on the air cleaner 24, and the connecting tube 30 is engaged with the air cleaner 24. ing.

  A downstream flange portion 32 is formed at the downstream end portion 30 b of the connecting tube 30. The downstream flange portion 32 is formed with a connecting portion 32a having an outer diameter larger than that of the main body of the connecting tube 30, and a pair of flange portions 32b are formed at both ends of the connecting portion 32a. The upstream end of the throttle body 23 is inserted into the connecting portion 32a, and the outer end of the connecting portion 32a is tightened by the fastening tool 25 (see FIG. 2), so that the downstream end 30b of the connecting tube 30 is the throttle It is securely fixed to the body 23.

  As shown in FIG. 2, a resonator 40 is attached above the downstream side of the center of the connecting tube 30. As shown in FIG. 6, a resonator 40 is connected to the downstream side of the upper portion of the connecting tube 30, and a resonator connecting portion 33 that connects the inside of the connecting tube 30 and the inside of the main body 41 of the resonator 40 is integrated. Is provided. Further, a resonator fixing portion 34 that is positioned upstream of the resonator connecting portion 33 and fixes the upstream end portion of the resonator is integrally formed on the upper portion of the connecting tube 30.

  As shown in FIGS. 7 and 8, the resonator connecting portion 33 includes a cylindrical portion 33a formed in a cylindrical shape and a flange portion 33b formed at an end portion of the cylindrical portion 33a. As shown in FIG. 2, the connection pipe 42a of the connection part 42 of the resonator 40 is inserted into the cylindrical part 33a of the resonator connection part 33, and the connection pipe is inserted into a groove (not shown) formed in the cylindrical part 33a. The projecting portion 42b of 42a is fitted, and the outside of the cylindrical portion 33a is fastened with a fastening member such as a fixing clip 44, and the front portion of the resonator 40 is fixed to the connecting tube 30, and the inside of the resonator 40 and the connecting tube 30 are connected in communication.

  The resonator fixing portion 34 includes a pair of support pieces 34a and an engagement shaft portion 34b formed therebetween. The pair of support pieces 34a protrudes upward from the connecting tube 30 and is formed so as to be parallel to the longitudinal direction of the connecting tube 30. Between the pair of support pieces 34a, a cylindrical engagement shaft portion 34b is formed. Is provided. The rear part of the resonator 40 is fixed to the connecting tube 30 by fitting a cylindrical engaging shaft part 34b between the pair of engaging claws 43a of the fixing part 43 of the resonator 40.

  As shown in FIGS. 3 and 6, a fuel pipe holding portion 35 that holds the fuel pipe 50 is integrally formed on the upper surface of the connecting tube 30 upward. The fuel pipe holding section 35 includes four hook sections 36 for hooking and holding the fuel pipe 50, one extending hook section 37 extended further upward than the hook section 36, and a side surface of the resonator fixing section 34. As shown in FIG. 3, the four hook portions 36, the extended hook portion 37, and the hook portion 34 c are provided along the longitudinal direction of the upper surface of the connecting tube 30. The connecting tubes 30 are formed integrally with the connecting tube 30 in a shape that is aligned and extended upward from the surface of the connecting tube 30.

  As shown in FIGS. 3 and 6, three of the hook portions 36 are provided at the rear portion of the connecting tube 30. As shown in FIG. 9, the three hook portions 36 are formed so as to be alternately positioned with respect to the width direction of the connecting tube 30. As shown in FIGS. 6 and 10, the hook portion 36 is formed with a base portion 36a so as to extend above the connecting tube 30, and the base portion 36a is cut into a semicircular arc-shaped cutout portion 36c. The tip is formed as a claw portion 36b capable of hooking the fuel pipe 50. The three claw portions 36b are alternately formed to extend in the width direction of the connecting tube 30, and the tips of the claw portions 36b are formed so as to overlap each other in the axial view of the fuel pipe 50. The fuel pipe 50 is fitted into the arc-shaped notch 36 c of the hook portion 36, is hooked by the claw portion 36 b, and is held by the connecting tube 30.

  Further, as shown in FIGS. 3 and 6, at the front portion of the connecting tube 30, one of the hook portions 36, an extended hook portion 37, and a hook portion 34c formed on the side surface of the resonator fixing portion 34 are provided. Are formed integrally with the connecting tube 30. As shown in FIG. 3, the extending hook 37 is disposed so as to be positioned between the resonator 40 and the fuel pipe 50. Further, as shown in FIGS. 6, 7, and 11, the hooks 36, the extended hooks 37, and the hooks 34 c are formed so as to be alternately positioned with respect to the width direction of the connecting tube 30.

  As shown in FIG. 12, the hook portion 36 provided at the front portion of the connecting tube 30 extends above the connecting tube 30 in the same manner as the hook portion 36 formed at the rear portion of the connecting tube 30 described above. Thus, a base portion 37a is formed, the base portion 36a is cut into a semicircular arc-shaped cutout portion 36c, and the tip is formed as a claw portion 36b capable of hooking the fuel pipe 50.

  As shown in FIG. 12, the extending hook portion 37 disposed so as to be positioned between the resonator 40 and the fuel pipe 50 is formed with a base portion 37a so as to extend above the connecting tube 30. The base portion 37a is cut into a semicircular arc-shaped cutout portion 37c, and an upper portion of the end portion of the tip arc-shaped cutout portion 37c is formed as a hook portion 37b on which the fuel pipe 50 can be hooked. Further extending upward from the hook portion 37b, a buffer portion 37d is formed integrally with the hook portion 37b.

  As shown in FIG. 13, the buffer portion 37 d extends upward from the hook portion 37 b between the resonator 40 and the seat rail 2 c as a peripheral component disposed around the resonator 40. Is formed. In the buffer portion 37d, a resonator contact recess 37e that is in contact with the resonator 40 is formed on the resonator 40 side, and the resonator contact recess 37e is formed in a shape that is substantially equal to the outer shape of the location where the resonator is in contact. The resonator 40 is brought into close contact with and in contact therewith. Further, the cushioning portion 37d is formed with a peripheral component contact recess 37f that contacts the seat rail 2c on the seat rail 2c side of the body frame 2, and the peripheral component contact recess 37f is in contact with the seat rail 2c. It is formed in a shape substantially equal to the outer shape of the portion to be placed, and is in close contact with the seat rail 2c. The buffer portion 37d is disposed so as to be in contact with both the resonator 40 and the seat rail 2c.

  As shown in FIG. 2, the buffer portion 37 d is provided so as to be positioned between the resonator connecting portion 33 and the resonator fixing portion 34 in the longitudinal direction of the connecting tube 30 so as to be more closely attached to the resonator 40. Yes.

  In the intake device 20 of the present embodiment, as shown in FIG. 3, the fuel pipe 50 extending from the fuel tank 9 is formed integrally with the connecting tube 30, and the claw portions of the three hook portions 36 provided at the rear portion. 36c alternately hooked, hooked on the hook 34c formed on the resonator fixing portion 34, and hooked on the hook 36 of the hook 36 provided on the front and the hook 37c of the extended hook 37 alternately. And connected to the fuel injection valve 22.

  Since the vehicle intake device 20 in the present embodiment is configured as described above, the intake passage 29 includes a connecting tube 30 formed of an elastically deformable resin member, and the connecting tube 30 includes a resonator 40. Since the buffer portion 37d extending between the seat rail 2c and the seat rail 2c is integrally formed, the connection between the resonator 40 and the seat rail 2c as a peripheral part is eliminated, and the interference between the seat rail 2c and the resonator 40 is eliminated. Can be avoided without increasing the number of parts by using the buffer portion 37d formed integrally with the connecting tube 30, and the gap in the layout of the vehicle can be reduced, thereby reducing the dead space. The size of the motorcycle 1 can be reduced at the same time.

  Further, since the buffer portion 37d provided by extending the extending hook 37 is disposed so as to be in contact with and sandwiched by both the resonator 40 and the seat rail 2c, the resonator 40 and the seat rail 2c as a peripheral component are disposed. Even if there is a gap between the shock absorber 37d and the resonator 40, and there is no gap between the shock absorber 37d and the seat rail 2c, even if vibration occurs due to the passage of intake air in the connecting tube 30, The buffer portion 37d can suppress noise generated when the resonator 40 and the seat rail 2c touch and collide with each other.

  Further, since the seat rail 2c as a peripheral part of the resonator 40 is made of metal, the resonator 40 is made of a resin molding material, and the connecting tube 30 is a rubber tube, the seat rail 2c as a peripheral part is made of metal. Even so, since the buffer portion 37d, which is a part of the connecting tube 30 made of a rubber tube, is disposed between the resin resonator 40 and the metal seat rail 2c, the resonator 40 and the metal sheet are disposed. The collision with the rail 2c is prevented by the rubber cushioning portion 37d, so that the impact caused by the collision can be absorbed.

  Furthermore, the connecting tube 30 is integrally formed with a fuel pipe holding part 35 that holds the fuel pipe 50 connected to the internal combustion engine 12, and the fuel pipe holding part 35 includes a hook part 37 b of the extended hook member 37. Since the buffer portion 37d is formed so as to extend between the resonator 40 and the seat rail 2c as a peripheral component, the fuel pipe holding portion formed integrally with the connecting tube 30 prevents the resonator 40 from shaking. By using 35, the buffer part with the minimum improvement that only changes the shape of the fuel pipe holding part 35 compared to the case where the buffer part that buffers the collision between the resonator 40 and the peripheral parts is formed independently. It becomes possible to shape | mold 37d, and can suppress the increase in manufacturing cost.

  Further, the fuel pipe holding part 35 includes a plurality of hook parts 36 and 37c for hooking and holding the fuel pipe 50, and the plurality of hook parts 36 and 37c are arranged along the longitudinal direction of the connecting tube 30, and alternately The connecting tube 30 is formed so as to extend in the width direction. Of the plurality of hooks 36 and 37c, a hook 37c located between the fuel pipe 50 and the resonator 40 is extended to serve as a buffer 37d. Therefore, interference between the fuel pipe 50 and the resonator 40 can be prevented.

  Further, the connecting tube 30 is provided with a resonator connecting portion 33 communicating with the resonator 40 and a resonator fixing portion 34 for fixing the resonator 40, and the buffer portion 37 d is located between the resonator connecting portion 33 and the resonator fixing portion 34. Therefore, the degree of adhesion between the resonator 40 and the buffer portion 37d can be increased to further improve the buffer effect.

  Furthermore, since the hook 34c is integrally provided on the side surface of the resonator fixing portion 34, the hook 34c for hooking the fuel pipe 50 is integrated using the resonator fixing portion 34 provided on the connecting tube 30. Since it can be provided, the protrusion of the hook portion 34c can be integrated using the resonator fixing portion 34, and the space can be reduced.

  Next, a vehicle intake device 59 according to another embodiment of the present invention will be described with reference to FIGS. 13 and 14. In the intake device 59 of the present embodiment, the resonator 40 used in the intake device 20 of the embodiment is changed to another resonator 60. The resonator 60 includes a body portion 61 having a hollow inside and a connection portion 62 connected in communication with the resonator connection portion 33 of the connecting tube 30, but the connecting portion provided in the resonator 40 of the above embodiment is provided. The fixing portion 43 for fixing to the tube 30 is not provided, and as shown in FIG. 13, the rear portion of the main body portion 61 of the resonator 60 is fixed to the seat rail 2 c as a peripheral component of the resonator 60. The holding part 63 protrudes rearward and is integrally formed. The seat rail 2c is provided with a fixing portion 66a of an L-shaped support piece 66, and the other surface of the support piece 66 is an insertion hole (not shown) through which the holding portion 63 of the resonator 60 is inserted. The support part 64b is formed. The holding portion 63 at the rear portion of the resonator 60 is inserted into the insertion hole 67a of the elastic member 67 formed so as to cover the periphery of the insertion hole of the support portion 64b of the support piece 66, and the support piece 66 is interposed via the elastic member 67. Is supported by the support portion 66b.

  In the intake device 59 of the present embodiment, a support portion 66b that supports the resonator 60 is provided on the seat rail 2c as a peripheral component of the resonator 60, and the holding portion 65 that is held by the support portion 66b via the elastic member 67 in the resonator 60. Since the holding portion 63 of the resonator 60 is elastically supported through the elastic member 67 on the support portion 66b of the support piece 66 fixed to the seat rail 2c as a peripheral component, the resonator 60 vibrates depending on the shape. Is large, the resonator 60 can be firmly fixed to the seat rail 2c of the peripheral component, and the vibration of the resonator 60 can be significantly suppressed.

  The intake structure of the internal combustion engine according to the embodiment of the present invention has been described above, but the aspect of the present invention is not limited to the above-described embodiment, and includes those implemented in various aspects within the scope of the present invention. It is a waste.

  DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 2 ... Body frame, 2b ... Main frame, 2c ... Seat rail, 12 ... Internal combustion engine, 20 ... Intake device, 29 ... Intake passage, 30 ... Connecting tube, 33 ... Resonator connection part, 34 ... Resonator fixed 34c ... Hook part 35 ... Fuel pipe holding part 36 ... Hook part 37 ... Extension hook part 37b ... Hook part 37d ... Buffer part 40 ... Resonator 50 ... Fuel pipe 51 ... Hose cover 60 ... Resonator, 64 ... Supporting piece, 64a ... Adhering part, 64b ... Supporting part, 65 ... Elastic member.

Claims (8)

An intake passage (29) provided in an internal combustion engine (12) mounted on the vehicle (1), through which intake air passes;
In the vehicle intake device provided with a resonator (40) that is connected in the middle of the intake passage (29) and suppresses the generation of intake noise by a resonance phenomenon,
The intake passage (29) comprises an intake passage member (30) formed of an elastically deformable resin member,
The intake passage member (30) is integrally formed with a buffer portion (37d) extending between the resonator (40) and a peripheral part (2c) disposed around the resonator (40). An air intake device for a vehicle.   2. The vehicle intake device according to claim 1, wherein the buffer portion (37 d) is disposed so as to be in contact with and sandwiched between both the resonator (40) and the peripheral component (2 c). The peripheral component (2c) is a metal body frame member (2c),
The resonator (40) is made of a resin molding material,
The vehicle intake device according to claim 1 or 2, wherein the intake passage member (30) is a rubber tube. The intake passage member (30) is integrally formed with a fuel pipe holding portion (35) for holding a fuel pipe (50) connected to the internal combustion engine (12),
The fuel pipe holding portion (35) is formed so as to extend between the resonator (40) and the peripheral component (2c), and serves as the buffer portion (37d). The vehicle air intake device according to 2. The fuel pipe holding part (35) includes a plurality of hook parts (34c, 36, 37b) for hooking and holding the fuel pipe (50),
The plurality of hooks (34c, 36, 37b) are arranged along the longitudinal direction of the intake passage member (30), and are formed to alternately extend in the width direction of the intake passage member (30). And
Of the plurality of hooks (34c, 36, 37b), the hook (37b) located between the fuel pipe (50) and the resonator (40) is extended to form a buffer part (37d). The vehicle air intake device according to claim 4. The intake passage member (30) is provided with a connecting portion (33) communicating with the resonator (40) and a fixing portion (34) for fixing the resonator (40),
The vehicle intake device according to claim 5, wherein the buffer portion (37d) is provided between the connection portion (33) and the fixing portion (34).   The vehicle air intake device according to claim 6, wherein the hook portion (34c) is integrally provided on a side surface of the fixing portion (34). The peripheral part (2c) is provided with a support part (64) for supporting the resonator (60),
The resonator (60) has a holding part (63) held by the support part (64) via an elastic member (65).
The vehicle air intake device according to claim 7, wherein the air intake device is provided.

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