JP6178719B2 - Air cleaner for vehicle - Google Patents

Description

  The present invention relates to a vehicle air cleaner that is installed in a vehicle such as a motorcycle.

  A vehicle such as a motorcycle is equipped with an air cleaner for removing dust, dust, impurities, and the like contained in the outside air supplied to the engine in advance and performing a cleaning process.

  10 and 11 partially illustrate the configuration of a conventional motorcycle 1X. A conventional motorcycle 1 </ b> X is attached to the rear of the body frame 100, a fuel tank 101 attached above the body frame 100, an engine 102 and an air cleaner 103 attached below the body frame 100, and the body frame 100. And a rear wheel 105 disposed below the seat 104, and a swing arm 106 that connects the vehicle body frame 100 and the rear wheel 105. The air cleaner 103 is connected to the engine 102. The air cleaner 103 is fixed to a plurality of brackets 107 disposed on the vehicle body frame 102 below the seat 104 by bolting using bolts 108 and nuts 109.

  In the air cleaner 103, a sponge-like or fiber sheet-like filter element is disposed inside a box-shaped housing. The casing of the air cleaner 103 is provided with an air inflow port and an air outflow port communicating with the inside. When the engine is driven, the air cleaner 103 takes in outside air from the air inlet and filters the outside air through a filter element to perform a cleaning process. Thereafter, clean outside air is supplied from the air outlet to the engine side.

Japanese Utility Model Publication No. 61-73423

  In general, since the air cleaner is connected to the engine and the body frame, each vibration is relatively easily transmitted to the air cleaner. At this time, the casing of the air cleaner is forcibly vibrated by vibrations from the engine and the vehicle body frame, and the vibration overlaps with the air cleaner intake sound above a certain frequency to generate a kind of resonance phenomenon and generate noise. Therefore, if vibrations transmitted from the engine and the body frame can be reduced in the air cleaner, it is considered that noise that can be generated in the air cleaner can be reduced.

  On the other hand, the air cleaner is required to clean and supply an appropriate amount of outside air to the engine. For this reason, it is necessary to ensure a sufficient internal volume of the air cleaner housing.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle air cleaner capable of reducing noise by suppressing vibration while ensuring a sufficient internal volume of a housing. To do.

  In order to solve the above problems, one aspect of the present invention is an air cleaner for a vehicle that cleans air supplied to an engine of a vehicle, the filter element for passing the air through and filtering the filter element, and the filter element. A rectangular parallelepiped housing having an air inlet and an air outlet through which air flows out toward the engine, and a wall portion of the housing in which the air inlet is formed and the air A sheet-like first elastic member made of a material softer than the material of the casing, which is attached to the remaining side wall portion excluding the wall portion where the outflow port is formed, and the first elastic member And a plate member made of a material having higher rigidity than the first elastic member.

  According to the vehicle air cleaner of one aspect of the present invention having the above-described configuration, in the housing of the air cleaner, a sheet-like first elasticity made of a material softer than the material of the housing between the side wall portion and the plate member. Arrange the members. With such a configuration, the vibration form of the housing of the air cleaner can be changed by the plate member that is vibrated by the first elastic member, and the vibration generating the noise can be attenuated. Thereby, the vibration of the air cleaner can be suppressed and noise generated from the air cleaner can be reduced.

  Further, the side wall portion where the first elastic member and the plate member are arranged is a housing portion excluding a relatively high strength wall portion in which at least one of the air inlet and the air outlet is formed, so that the air cleaner Vibration can be effectively suppressed and noise can be reduced.

  Further, a plate member made of a material having higher rigidity than the first elastic member is disposed so as to cover the first elastic member. As a result, the casing can be reinforced without increasing the thickness of the casing or without providing reinforcing means such as reinforcing ribs inside the casing, thus reinforcing the casing without reducing the internal volume of the casing. can do.

  As is apparent from the above description, according to the vehicle air cleaner of one aspect of the present invention described above, a vehicle capable of reducing noise by suppressing vibration while ensuring a sufficient internal volume of the housing. Air cleaner can be provided.

1 is a side view showing a partial configuration of a motorcycle according to a first embodiment. It is the external appearance block diagram seen from diagonally forward of the air cleaner which concerns on 1st Embodiment. It is a front view of the air cleaner concerning a 1st embodiment. It is a partial cross section figure which shows the internal structure of the air cleaner which concerns on 1st Embodiment. It is an exploded view of the periphery of the plate member of the air cleaner according to the first embodiment. It is sectional drawing of the plate member periphery which shows the mode before a heat caulking process. It is sectional drawing of the plate member periphery which shows the mode after a heat crimping process. It is sectional drawing for demonstrating the subject in the conventional air cleaner. It is sectional drawing which shows the structure of the plate member periphery of the air cleaner which concerns on 2nd Embodiment. FIG. 6 is a side view showing a partial configuration of a conventional motorcycle. FIG. 6 is a partially enlarged view of a conventional motorcycle.

  Each embodiment will be described below with reference to the drawings.

  FIG. 1 shows a partial configuration of a motorcycle 1 equipped with a vehicle air cleaner 6 (hereinafter simply referred to as “air cleaner 6”) according to the first embodiment. 2 to 5 show the configuration of the air cleaner 6.

  As shown in FIG. 1, a motorcycle 1 includes a body frame 2 that extends from the front of the vehicle to the rear of the vehicle, an engine 3 that is disposed inward of the body frame 2, and a rear wheel that is disposed on the rear of the body frame 2. 4, a fuel tank 5 disposed above the body frame 2, an air cleaner 6 connected to the engine 3 below the fuel tank 5, a seat 7 disposed behind the fuel tank 5, and the engine 3 The muffler 8 arranged to extend rearward, the swing arm 9 arranged in the center of the vehicle body frame 2, and the drive chain 10 for transmitting the rotational driving force from the engine 3 to the rear wheel 4. Prepare.

  The body frame 2 is a skeleton part of the motorcycle 1 and is configured by connecting a plurality of long steel materials. Specifically, the vehicle body frame 2 is a frame having a truss structure disposed from the front to the rear of the vehicle, and includes a head pipe 2A that rotatably supports a handle shaft (not shown) in the front of the vehicle, and a head pipe 2A. A main frame 2B extending rearward of the vehicle, a pair of frame side brackets 2C for connecting the air cleaner 6 disposed on both sides in the vehicle width direction near the longitudinal center of the vehicle body frame 2 (for example, the rear portion of the main frame 2B), Pivot frames 2D disposed on both sides in the vehicle width direction in the vicinity of the center in the longitudinal direction of the frame 2 and beam-like cross link members 2E installed over the respective pivot frames 2D.

  In FIG. 1, for the convenience of illustration, only the frame-side bracket 2C located on the front side of the drawing is shown out of the pair of frame-side brackets 2C.

  The engine 3 is fixed so that its upper part is partially covered by the body frame 2. The fuel tank 5 and the seat 7 are arranged above the vehicle body frame 2 in this order.

  The muffler 8 for releasing the exhaust from the engine 3 to the rear of the vehicle is connected to the front part of the cylinder of the engine 3 and passes below the engine 3 and extends to the rear of the vehicle.

  The swing arm 9 constitutes a part of the suspension in the rear part of the motorcycle 1. The swing arm 9 is pivotally supported at its front end 9A on a pivot shaft (not shown) arranged over each pivot frame 2D. As a result, the swing arm 9 is disposed so as to be swingable up and down around the pivot axis.

  The rear wheel 4 is rotatably supported on the rear end 9B of the swing arm 9 in a state where the driving force of the engine 3 can be transmitted via the drive chain 10.

  The air cleaner 6 is disposed behind the cylinder of the engine 3 and is connected to the vehicle body frame 2 by bolting in the frame side bracket 2C. The air cleaner 6 is sandwiched between the lower surface of the fuel tank 5 and the upper surface of the cross link member 2E via second elastic members S1 and S2 disposed on the upper surface and the lower surface, respectively. As a result, the air cleaner 6 is positioned inside the motorcycle 1.

  Next, a specific configuration of the air cleaner 6 will be described.

  As shown in FIGS. 2 to 4, the air cleaner 6 includes a lower housing 60, first elastic members 64a and 64b, plate members 65a and 65b, covering members 66a and 66b, an upper housing 68, and a filter. It has the element 70 and 2nd elastic member S1, S2.

  The lower housing 60 is a box having an opening 60F on the upper side, which is a front wall portion 60A oriented forward of the vehicle, a rear wall portion 60B oriented rearward of the vehicle, and a right wall portion oriented right of the vehicle body. 60C, a left side wall portion 60D oriented to the left side of the vehicle body, and a bottom surface portion 60E oriented to the lower side of the vehicle body. Of these, the right side wall 60C and the left side wall 60D have a substantially flat outer surface and inner surface. The lower housing 60 is a resin molded product, and a combination of the upper housing 68 and the lower housing 60 constitutes a housing of the air cleaner 6 having an approximately rectangular parallelepiped appearance. The external shape of the casing of the air cleaner 6 is designed to ensure a sufficiently large internal volume in the internal space surrounded by the fuel tank 5, the seat 7, and the vehicle body frame 2 inside the motorcycle 1. It is.

  The front wall 60A has an air outlet 61a for supplying clean air to the engine 3, a blow-by gas recirculation port 61b for recirculating blow-by gas to the engine 3, and complete combustion of exhaust gas from the air cleaner 6. And a secondary air outlet 61c for sending fresh air into the exhaust pipe. Above the front wall portion 60A, a pair of housing side brackets 62a and 62b for connecting the air cleaner 6 to the frame side bracket 2C of the vehicle body frame 2 by bolting project outwardly.

  The rear wall portion 60 </ b> B includes a plurality of reinforcing ribs 63 erected on the outer surface of the rear wall portion 60 </ b> B, and the lower housing 60 is reinforced while ensuring the internal volume of the housing 60. The air outlet 61a is connected to the inlet 3a of the engine 3 (see FIG. 1). Note that an air inflow port 68b provided in the upper housing 68 is disposed on the outer surface of the rear wall portion 60B (see FIG. 4).

  The bottom surface portion 60E includes a drain nozzle 67a for discharging water accumulated in the lower housing 60, a tube 67b for sealing the tip of the drain nozzle 67a, and a clamp 67c for fastening the tube 67b to the drain nozzle 67a. The bottom surface portion 60E is placed on the cross link member 2E.

  In addition, 2nd elastic member S2 is affixed on the outer surface of the bottom face part 60E. The second elastic member S2 has a sheet shape, and is made of an elastomer material such as urethane as an example. The second elastic member S2 is interposed between the outer surface of the bottom surface portion 60E and the cross link member 2E, is elastically deformed by receiving vibration transmitted from the cross link member 2E to the lower housing 60, and attenuates the vibration energy.

  A sheet-like first elastic member 64a, a plate member 65a, and a covering member 66a are attached to the right side wall portion 60C from the outside in this order (see FIG. 5). These components are fixed along the outer surface of the right side wall part 60C by five heat caulking parts 602a to 606a formed on the right side wall part 60C.

  The first elastic member 64a has a sheet shape and is made of a material that is more flexible than the material of the housing (the lower housing 60 and the upper housing 68). For example, the first elastic member 64a is made of an elastomer material such as ethylene propylene diene rubber (EPDM) or acrylonitrile butadiene rubber (NBR). The first elastic member 64a has a plurality of insertion holes (see the insertion holes 642a in FIG. 6). In the air cleaner 6, the first elastic member 64 a has a plurality of protruding portions (see the protruding portions 602 ax in FIG. 6) erected on the lower housing 60 inserted into the insertion holes of the first elastic member 64 a. It arrange | positions so that it may closely_contact | adhere to the outer surface of the right side wall part 60C. The first elastic member 64a absorbs vibration energy together with the plate member 65a described later by elastically deforming by receiving vibration transmitted from the engine 3 and the vehicle body frame to the lower casing 60 and the upper casing 68 of the air cleaner 6. The vibration form of the air cleaner 6 is changed to prevent the occurrence of resonance.

  The plate member 65a is configured as a material having higher rigidity than the material of the first elastic member 64a, for example, a metal plate such as iron (Fe). Iron is a suitable material in terms of cost and rigidity. As shown in FIG. 5, the plate member 65a has an extending portion 651a, a plurality of insertion holes 652a to 657a, and a plurality of female screw portions (bosses) 658a and 659a. The extending part 651a extends a part of the outer periphery of the plate member 65a outward. The outer surface of the extending part 651a is covered with a resin cap 651a1. The extending portion 651a functions as an engaging portion for engaging the plate member 65a with the covering member 66a. At the time of manufacture, the plurality of protrusions standing on the lower housing 60 are inserted into the insertion holes 652a to 657a, and the heat caulking portions 602a to 606a are formed at the tips of the protrusions. The first elastic member 64a and the lower casing 60 are fixed together. Accordingly, the plate member 65a reinforces the lower housing 60 from the outside.

  The covering member 66a is a resin molded product, and has a plurality of insertion holes 661a and 662a through which the bolts BL1 and BL2 are inserted, and a notch hole 663a through which the extension portion 651a is inserted and engaged. As shown in FIG. 5, bolts BL1 and BL2 are screwed into the female screw portions 658a and 659a via a covering member 66a. The extending portion 651a is engaged with the periphery of the notch hole 663a, and the bolts BL1 and BL2 are screwed into the female screw portions 658a and 659a via the covering member 66a, whereby the covering member 66a is fixed to the plate member 65a. . Accordingly, the covering member 66a covers the plate member 65a from the outside.

  As shown in FIG. 3, the left side wall portion 60D of the lower housing 60 includes a first elastic member 64b, a plate member 65b, a covering member 66b, a first elastic member 64a, and a plate member 65a. These are arranged in the same manner as the covering member 66a. The first elastic member 64a and the first elastic member 64b, the plate member 65a and the plate member 65b, and the covering member 66a and the covering member 66b have shapes that are mirror images of each other. Therefore, description of each structure of the 1st elastic member 64b, the plate member 65b, and the coating | coated member 66b is abbreviate | omitted.

  The upper housing 68 closes the opening 60 </ b> F of the lower housing 60. Further, as shown in FIG. 4, the upper housing 68 carries the filter element 70 with the lower housing 60. The upper housing 68 is a dish-like body formed such that the front portion bulges upward in order to secure the internal volume of the air cleaner 6, and has an air inflow duct 68 a extending rearward. . Specifically, the air inflow duct 68a extends from above the opening 60F of the lower housing 60 in an L shape along the outer surface of the rear wall 60B. The air inflow duct 68a has an air inlet 68b at the lower end thereof. The upper casing 68 uses a plurality of screws B at the periphery thereof, and is fixed by screwing at the periphery of the opening 60 </ b> F of the lower casing 60.

  The filter element 70 is a wet air filter, and is a sheet body configured using a foam material such as urethane foam or a non-woven fabric. The filter element 70 is disposed between the lower housing 60 and the upper housing 68 so as to cover the opening 60F of the lower housing 60 without a gap.

  Next, a method of fixing the first elastic member 64a and the plate member 65a to the lower housing 60 using the heat caulking portions 602a to 606a will be described with reference to FIGS. 6 and 7 exemplify only the method for forming the heat caulking portion 602a, the other methods for forming the heat caulking portions 603a to 606a are the same.

  In the manufacturing process of the air cleaner 6, first, a lower housing 60P before processing having a plurality of protrusions (including the protrusions 602ax in FIG. 6) protruding from the right side surface part 60C, and insertion holes through which the protrusions can be inserted, respectively. A first elastic member 64a and a plate member 65a are prepared.

  The first elastic member 64a is disposed by inserting the insertion hole 642a through the protrusion 602ax.

  The plate member 65a is stacked by inserting the insertion hole 652a through the protrusion 602ax with respect to the upper surface of the first elastic member 64a. In this state, as shown in FIG. 6, the tip (top) 602ay of the protruding portion 602ax exposed upward is pressed by the tip of the jig W heated to a high temperature to increase the diameter. As a result, as shown in FIG. 7, a heat caulking portion 602a is formed at the tip 602ay of the protruding portion 602ax.

  The other heat caulking portions 603a to 606a are formed in the lower housing 60 by the same method as the method for forming the heat caulking portion 602a. By forming the heat caulking portions 602a to 606a, the first elastic member 64a and the plate member 65a can be locked and fixed to the lower housing 60.

  Thereafter, the covering member 66a is overlaid on the plate member 65a, the extending portion 651a is inserted through the notch hole 663a, and the extending portion 651a is engaged with the periphery of the notch hole 663a. Bolts BL1 and BL2 are inserted through the insertion holes 661a and 662a, and screwed into the female screw portions 658a and 659a. Thereby, the covering member 66 a can be fixed to the lower housing 60.

  The air cleaner 6 is housed in the interior space of the vehicle body frame 2, and with the frame side brackets 2C and the case side brackets 62a and 62b attached to the frame side brackets 2C, the color of the frame side brackets 2C and the case side brackets 62a and 62b are not shown. Bolted through. As a result, the air cleaner 6 is connected to the vehicle body frame 2. Further, the air cleaner 6 contacts the lower surface of the fuel tank 5 via the second elastic member S1, and contacts the upper surface of the cross link member 2E via the second elastic member S2. The air cleaner 6 is connected to the engine 3 at the air outlet 61a. Thus, the air cleaner 6 is fixed to the vehicle body frame 2, the engine 3, the fuel tank 5, and the cross link member 2E.

  When the engine 3 is driven, the engine 3 sucks air from the air outlet 61a of the air cleaner 6 so that the internal pressure of the air cleaner 6 becomes negative with respect to the atmospheric pressure. Accordingly, outside air flows into the upper housing 68 from the air inlet 68 b and passes through the inside of the filter element 70. At this time, the outside air is purified in the filter element 70 by removing dust, dust, impurities and the like. Thereafter, clean outside air passes through the inside of the lower housing 60 and is supplied to the engine 3 from the air outlet 61a.

  Here, the air cleaner 6 can be expected to have the following effects.

  In general, the casing of the air cleaner is forcibly vibrated by vibrations from the engine and the frame. Above a certain frequency, the vibration may overlap with the air cleaner intake sound to generate a kind of resonance phenomenon and generate noise.

  Therefore, in the air cleaner 6, the plate members 65 a and 65 b are attached to the lower housing 60 with the first elastic members 64 a and 64 b sandwiched therebetween in order to prevent vibration generated in the lower housing 60 from overlapping with the air cleaner intake sound and resonating. ing. Thus, the vibration mode (vibration frequency) of the air cleaner 6 is changed to make it difficult to cause a resonance phenomenon, and noise generated in the air cleaner 6 is reduced.

  The front wall portion 60A has housing side brackets 62a and 62b and an air outlet 61a, and the rear wall portion 60B is provided with a rib 63. The front wall portion 60A and the rear wall portion 60B have a smaller area than the right side wall portion 60C and the left side wall portion 60D. Therefore, the front wall portion 60A and the rear wall portion 60B are structural portions that are much more rigid than the right side wall portion 60C and the left side wall portion 60D. Therefore, even if the vibration of the engine 3 is transmitted to the front wall portion 60A and the rear wall portion 60B, it is considered that there is little possibility that the front wall portion 60A and the rear wall portion 60B will bend or deform to generate noise.

  The upper casing 68 has a high rigidity because its upper surface bulges upward as shown in FIG. On the other hand, the bottom surface portion 60E of the lower housing 60 has a relatively small area and thus has high rigidity. Further, in the air cleaner 6, the upper surface of the upper housing 68 is in contact with the fuel tank 5 through the second elastic member S1, and the bottom surface portion 60E of the lower housing 60 is in contact with the cross link member 2E through the second elastic member S2. Yes. For this reason, the vibration of the air cleaner 6 in the vertical direction is difficult to increase.

  Further, in the air cleaner 6, the plate members 65a and 65b are made of a material having higher rigidity than the first elastic members 64a and 64b. For this reason, by arranging the plate members 65a and 65b, which are damped by the first elastic members 64a and 64b, in the lower housing 60, the right side wall portion 60C and the left side wall portion 60D are reinforced from the outside, and noise is generated. Can dampen vibrations. Further, the first elastic members 64a and 64b and the plate members 65a and 65b are fixed to the lower housing 60 by the heat caulking portions provided on the outer surfaces of the right side wall portion 60C and the left side wall portion 60D. When the first elastic members 64a and 64b and the plate members 65a and 65b are arranged, the internal volume of the lower housing 60 is not reduced.

  The reinforcing rib 63 of the lower housing 60 is erected on the outer surface of the rear wall portion 60B, reinforces the lower housing 60 from the outside together with the plate members 65a and 65b, and includes reinforcing means inside the lower housing 60. Is provided so as not to reduce the internal volume of the lower housing 60. Therefore, abundant outside air can be taken into the air cleaner 6 to maintain the amount of air supplied from the air cleaner 6 to the engine 3 and to prevent the air cleaner 6 from being bent or deformed.

  In addition, as means for fixing the first elastic members 64a and 64b and the plate members 65a and 65b to the lower housing 60, heat caulking portions 602a to 606a standing on the outer surfaces of the right side surface portion 60C and the left side surface portion 60D are used. Therefore, for example, as shown in FIG. 8, there is no need to employ fixing means for inserting the shaft portion of the bolt BL into the lower housing 60 </ b> X and fastening with the nut N. For this reason, it is not necessary to form the insertion hole 60X1 communicating with the inside and outside of the lower housing 60. Therefore, a seal member for sealing the gap between the insertion hole 60X1 and the bolt BL is also unnecessary.

  Further, in the air cleaner 6, it is not necessary to form a boss that holds the nut N shown in FIG. 8 inside the lower housing 60 or to make the lower housing 60 thick in order to form the boss. Therefore, when the lower casing 60 is manufactured by injection molding, the lower casing 60 can be manufactured at a low cost by using a molding die having a relatively simple structure and an appropriate amount of resin material.

  Next, the second embodiment will be described focusing on differences from the first embodiment.

  In the first embodiment, the first elastic members 64a and 64b and the plate members 65a and 65b are fixed to the lower housing 60 using the heat caulking portions 602a to 606a and the like. The fixing method of 64a, 64b and plate member 65a, 65b is not limited to the said method.

  For example, as illustrated in the second embodiment of FIG. 9, a female screw portion 60B1 can be erected on the outer surface of the lower housing 60B instead of the heat caulking portion. The female screw portion 60B1 is formed by erecting a circumferential rib on the outer surface of the lower housing 60 and insert-molding a nut therein.

  At the time of manufacturing the air cleaner according to the second embodiment, the insertion holes 642a and 652a are inserted through the female screw portion 60B1, and the first elastic member 64a and the plate member 65a are stacked on the outer surface of the lower housing 60B. Thereafter, a flanged bolt BL3 having an outer diameter flange that can come into contact with the surface of the plate member 65a is screwed into the female screw portion 60B1. Although not shown in FIG. 9, a combination of the female screw portion 60B1 and the flanged bolt L3 is used instead of forming all the heat caulking portions 602a to 606a.

  Even in the configuration of the second embodiment, the first elastic member 64a and the plate member 65a are fixed to the lower housing 60B by the flanged bolt BL3. Therefore, the same effect as that of the first embodiment can be expected.

  The present invention is not limited to the above-described embodiments, and the configuration can be changed, added, or deleted without departing from the spirit of the present invention. Each of the above embodiments may be arbitrarily combined with each other. For example, a part of the configuration or method in one embodiment may be applied to another embodiment.

  In each of the above embodiments, the first elastic members 64a and 64b, the plate members 65a and 65b, and the covering members 66a and 66b are provided for the right side wall portion 60C and the left side wall portion 60D of the lower housing 60. However, the first elastic member, the plate member, and the covering member may be provided only on either the left or right side wall.

  In addition, the first elastic member can be disposed over a plurality of adjacent wall portions (for example, the right wall portion 60C, the bottom surface portion 60E, and the left side surface portion 60D) on the outer surface of the lower housing 60. In this case, a plate member can be divided | segmented for every side part, and it can distribute | arrange so that the surface of a 1st elastic member may each be covered partially.

  The first elastic members 64a and 64b and the plate members 65a and 65b are each fixed to the lower housing 60 using a total of five heat caulking portions, but the number of heat caulking portions is not limited to this, You may form less than 5 or more than 5 per side wall part.

  In the air cleaner 6, the configuration in which the air outlet 61 a is disposed on the front wall 60 </ b> A side of the lower housing 60 and the air inlet 68 </ b> E is disposed on the rear wall 60 </ b> B side is shown. The arrangement position is not limited to this. Accordingly, the first elastic members 64a and 64b may be attached from the outside to the side wall portion of the casing excluding the wall portion where at least one of the air inlet and the air outlet is formed.

  As a method of attaching the covering members 66a and 66b to the plate members 65a and 65b, the configuration in which the extending portion 651a is engaged with the peripheral edge of the notch hole 663a is illustrated, but the extending portion 651a and the notch portion are omitted, and the covering member 66a and 66b can be fixed to the plate members 65a and 65b only by the bolt BL.

  In each of the above embodiments, the configuration in which the first elastic members 64a and 64b and the plate members 65a and 65b are arranged in the lower housing using the heat caulking portion or the female screw portion standing on the lower housing is exemplified. For example, the first elastic members 64a and 64b and the plate members 65a and 65b can be bonded to the lower housing 60 using an adhesive. Moreover, when forming a crimping part, it is not limited to a heat crimping part, Various well-known crimping parts, such as a dowel crimping part, a burring crimping part, a spin crimping part, can also be formed.

  As described above, the vehicle air cleaner according to the present invention has an excellent effect of suppressing vibration transmitted from the engine and effectively reducing noise that may be generated by the vibration when the engine is driven. Therefore, the vehicle air cleaner according to the present invention is beneficial when applied widely as an air cleaner or the like of a motorcycle or the like that can exhibit the significance of this effect.

B screw BL, BL1, BL2 bolt BL flanged bolt S1, S2 second elastic member 1 body 2, 100 body frame 2A head pipe 2B main frame 2C frame side bracket 2D pivot frame 2E cross link member 3, 102 engine 4, 105 Rear wheel 5, 101 Fuel tank 6, 103 Air cleaner 7, 104 Seat 8 Muffler 9, 106 Swing arm 10 Drive chain 60 Lower housing 60A Front wall 60B Rear wall 60C Right wall 60D Left side wall 60E Bottom surface 60F Opening 60P Lower housing before processing 61a Air outlets 62a, 62b Housing side bracket 63 Reinforcement ribs 64a, 64b First elastic members 65a, 65b Plate members 66a, 66b Cover member 68 Upper housing 68a Air inlet 70 I Luther element 602ax protrusion 602a~606a heat caulking portion

Claims (8)

An air cleaner for purifying air supplied to a vehicle engine,
A filter element for filtering the air through the interior;
A rectangular parallelepiped housing that houses the filter element and has an air inlet and an air outlet that flows out air toward the engine;
Out of the casing, it is attached from the outside to the remaining side wall part excluding the wall part where the air inlet is formed and the wall part where the air outlet is formed. A sheet-like first elastic member made of a flexible material;
A plate member that is disposed so as to cover the first elastic member and is made of a material having higher rigidity than the first elastic member ;
The first elastic member and the plate member, from above the upper end of the air outlet, that extend downward from the lower end of the air outlet, the air cleaner. The housing has a protruding portion protruding outward from the side wall portion,
The first elastic member has a first insertion hole through which the protruding portion can be inserted,
2. The air cleaner according to claim 1, wherein the plate member is fixed at the protrusion in a state where the protrusion is inserted into the first insertion hole. The plate member has a second insertion hole through which the protrusion can be inserted,
The plate member is fixed to the protrusion by expanding the diameter of the tip of the protrusion in a state where the protrusion is inserted into the first and second insertion holes. The listed air cleaner.   The air cleaner according to claim 3, wherein the housing is a resin molded product, and a tip end of the projecting portion is subjected to a heat caulking process with respect to the plate member. The housing is a rectangular parallelepiped,
The sheet-like second elastic member is disposed on at least one of the upper surface and the lower surface of the housing so as to be in contact with the vehicle and is made of a material softer than the material of the housing. The air cleaner of any one of -4.   The air cleaner according to any one of claims 1 to 5, wherein in the housing, the side wall portions are located on both sides in the vehicle width direction.   The air cleaner according to claim 5 or 6, wherein the casing has a reinforcing rib standing on an outer surface of a wall portion in the vehicle traveling direction.   The air cleaner according to any one of claims 1 to 7, further comprising a covering member disposed so as to cover the plate member.

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