WO2014042229A1

WO2014042229A1 - Air intake duct for vehicle

Info

Publication number: WO2014042229A1
Application number: PCT/JP2013/074769
Authority: WO
Inventors: 法雄野口; 佑樹藤本
Original assignee: 株式会社モルテン
Priority date: 2012-09-13
Filing date: 2013-09-12
Publication date: 2014-03-20
Also published as: WO2014042229A8

Abstract

[Problem] To attach a porous material to an installation section so as not to create a gap between the porous material and a duct main body. [Solution] An installation section (3) is provided on a planar section (6) of a peripheral wall section of a duct main body (2). An opening section (4) is provided to the installation section (3), and a porous material (5) is provided to the installation section (3) so as to cover the opening section (4) from the outside of the duct main body (2). If a cover (4) with a through-hole section (16) corresponding to the opening section (4) is attached to the installation section (3) so as to cover the porous material (5) provided to the installation section (3), a hook section (15) is fit into an attachment hole section (18), mutually joining the cover (4) and a stopper section (14) distributed so as to cover evenly in the direction along a circular shape of a partition wall section (14). The attachment hole section (18) may be provided on the duct main body (2) side, with the stopper section (14) and the hook section (15) provided on the cover (4) side, and the cover (4) may be joined to the partition wall section (14) by ultrasonic welding, vibration welding, thermal welding, an adhesive agent, or the like.

Description

Intake duct for vehicle

The present invention relates to a vehicle intake duct having a function of reducing intake noise when external air is taken into an internal combustion engine of a vehicle.

FIG. 23 shows a vehicle intake duct 1001 disclosed in Patent Document 1. In FIG. 23, a vehicle intake duct 1001 includes a flat plate-shaped porous material 1002 and a cylindrical duct body 1003. The porous material 1002 reduces intake noise, and is composed of a non-woven fabric molded into a flat plate shape by pressing without weaving fibers. A portion of the cylindrical duct main body 1003 where the porous material 1002 is installed is configured as a flat portion 1004 protruding outward in the diameter direction of the duct main body 1003. One opening 1005 is provided in the plane portion 1004. The opening 1005 penetrates into and out of the duct body 1003. Then, the porous material 1002 is joined to the flat portion 1004 from the outside of the duct main body 1003 by a rivet, an adhesive, or the like so as to cover the opening 1005. One end of the duct body 1003 constitutes an inlet 1006 for introducing outside air. The other end portion of the duct main body 1003 constitutes a connection portion 1007 to an air cleaner (not shown).

However, although the vehicle air intake duct 1001 shown in FIG. 23 has a structure that restricts the position of the porous material 1002 in the plane portion 1004 in a direction parallel to the flow of air flowing in the duct main body 1003, the porous material 1002 is porous. When the material 1002 is joined to the flat surface portion 1004 with a rivet, a gap is likely to be generated between the porous material 1002 and the duct body 1003. When the gap is generated, extra hot air in the engine room is sucked into the engine performance. Has the disadvantage of producing adverse effects.

Further, as shown in FIG. 24, the duct body 1003 is a curved pipe having a straight pipe portion 1008; 1009 and a curved pipe portion 1010 from the surrounding environment where the vehicle intake duct 1001 is installed, from the viewpoint of the intake noise reduction function. In some cases, the size of the porous material 1002 in the direction parallel to the flow of air flowing through the duct body 1003 from the suction port 1006 cannot be reduced. Therefore, the barrier 1011 protrudes outward from the curved pipe portion 1010 on the downstream side of the plane portion 1004 in the direction of intake air flow.

24, as an analysis of the ventilation resistance, the area when the vehicle intake duct 1001 is cut in a direction orthogonal to the flow of intake air = 3914 mm ² , and the flow rate to the vehicle intake duct 1001 is 10 m ³ / When air of min was flowed and the pressure loss near the outlet of the vehicle intake duct 1001 was determined by analysis, the pressure loss was −752 Pa. The streamline display by the analysis of the airflow resistance was the result shown in FIG.

25, reference numeral 1012 denotes a streamline entering the duct main body 1003 from the straight pipe portion 1008 side, and reference numeral 1013 denotes a streamline entering the duct main body 1003 from the porous material 1002 and the opening 1005. Considering FIG. 25, the streamline 1014 at the barrier 1011 is disturbed, and the ventilation resistance is large.

It is also conceivable that the flat portion 1004 shown in FIG. 24 is removed and the opening 1005 formed between the straight pipe portion 1008 and the curved pipe portion 1010 is closed with a porous material 1002 formed into a flat plate shape shown in FIG. However, in this case, since the porous material 1002 is formed into a flat plate shape, a gap is easily generated between the porous material 1002 and the duct main body 1003. There is a disadvantage that the hot air inside is excessively sucked to adversely affect the intake noise reduction function and the engine performance.

FIG. 26 shows the vehicle intake duct 1101 disclosed in Patent Document 2. In FIG. 26, the vehicle intake duct 1101 includes a hollow rectangular tube-shaped duct body 1102, two porous materials 1103, and two covers 1104. A plurality of openings 1105 and a plurality of holes 1106 are provided in the plane portion configured as the peripheral wall portion of the duct main body 1102. The opening 1105 and the hole 1106 penetrate into and out of the duct body 1102. The porous material 1103 is made of a breathable nonwoven fabric, maltoprene, felt, asbestos sheet, glass wool, or the like so as to cover the plurality of openings 1105 from the outside of the duct body 1102. The cover 1104 holds the porous material 1103 from the outside, and is formed in a lattice shape provided with a plurality of through-hole portions 1107. A plurality of convex portions 1108 are provided in the lattice-shaped portion of the cover 1104, a convex portion 1110 is provided in one flange portion 1109 of the cover 1104, and a hole portion 1112 is provided in the other flange portion 1111 of the cover 1104. Is provided. Then, after the porous material 1103 is placed on the flat portion of the duct main body 1102 from the outside of the duct main body 1102 so as to cover the plurality of openings 1105, the pair of covers 1104 are formed from the outside of the duct main body 1102 to the porous material 1103. The protrusion 1110 is attached to the hole 1112, while the protrusion 1108 penetrates the porous material 1103 and is attached to the hole 1106 of the duct body 1102, thereby covering the opening 1105. The material 1103 is fixed to the outside of the flat portion of the duct body 1102 with a pair of covers 1104.

However, the vehicle intake duct 1101 shown in FIG. 26 is not configured to restrict the position of the porous material 1103 to the duct main body 1102, so that the duct main body 1102 is covered with the duct main body 1102. There is a drawback that the position of the porous material 1103 varies. In addition, since the porous material 1103 is supported by sandwiching the flat plate-like portion of the cover 1104 between the duct body 1102 and the duct body 1102, a gap is easily generated between the porous material 1103 and the duct body 1102. If this gap occurs, there is a drawback that extra hot air in the engine room is sucked in and the engine performance is adversely affected.

FIG. 27 shows the vehicle intake duct 1201 disclosed in Patent Document 3. In FIG. 27, the vehicle intake duct 1201 includes a hollow cylindrical duct main body 1202, one porous material 1203, and one cover 1204. The duct body 1202 includes a semicircular first half 1205 and a semicircular second half 1206. The first half 1205 and the second half 1206 are combined so as to form a hollow cylindrical shape, and the flange portion 1207 of the first half 1205 and the flange portion 1208 of the second half 1206 are joined together. Thus, the duct body 1202 is formed. The first half 1205 is provided with a circular opening 1209, a pair of ribs 1210, and two attachment holes 1211. The pair of ribs 1210 extends in the circumferential direction of the duct body 1202 and is connected to the flange portion 1207. A plurality of openings 1209 are arranged in the circumferential direction of the duct main body 1202 in a portion surrounded by the rib 1210 and the flange portion 1207 of the duct main body 1202. The porous material 1203 is a breathable member made of a nonwoven fabric or the like so as to cover the plurality of openings 1209 from the outside of the duct body 1202. The cover 1204 is sized to cover the porous material 1203 with a synthetic resin, and is formed in the same curved surface shape as the portion surrounded by the rib 1210 and the flange portion 1207 of the duct main body 1202. The cover 1204 is formed with a through hole portion 1212 connected to the opening 1209. Stop portions 1213 are provided at both ends of the cover 1204 in the circumferential direction of the duct main body 1202. The stop portion 1213 is provided with a hook portion 1214. Then, after the porous material 1203 is placed on the portion surrounded by the rib 1210 and the flange portion 1207 of the duct body 1202 so as to cover the plurality of openings 1209 from the outside of the duct body 1202, the cover 1204 is covered with the duct body. The cover 1204 is covered with the porous material 1203 from the outside of the 1102, the stop portion 1213 and the hook portion 1214 are fitted into the attachment hole portion 1211, and the hook portion 1214 is fixed to the attachment hole portion 1211, whereby the cover 1204 is fixed to the duct body 1202. The porous material 1203 is sandwiched between the duct main body 1202 and the cover 1204 and supported.

However, since the vehicle intake duct 1201 shown in FIG. 27 has a structure in which a plurality of openings 1209 are arranged in the circumferential direction of the duct body 1202, a porous material 1203, a cover 1204, a plurality of openings 1209, and the like. A portion composed of a pair of ribs 1210 and a pair of attachment holes 1211 needs to be provided at a plurality of locations in the direction of the air flowing inside the duct main body 1202, and the structure is complicated. In addition, since the stop portion 1213 has a structure provided at both ends of the cover 1204, the portion of the cover 1204 where the plurality of through-hole portions 1212 are provided tends to float to the outside in the diameter direction of the duct body 1202. When a portion provided with the plurality of through-hole portions 1212 in the cover 1204 is lifted to the outside in the diameter direction of the duct main body 1202, a portion surrounded by the rib 1210 and the flange portion 1207 of the duct main body 1202, the porous material 1203, It is easy to generate a gap between the two, and if this gap is generated, there is a disadvantage that extra hot air in the engine room is sucked and engine performance is adversely affected.

Japanese Patent No. 3517608 Japanese Utility Model Publication No. 6-10116 WO2011 / 155437

The present invention has been made in view of the above-described background art, and in a vehicle intake duct having an intake noise reduction function for sandwiching and supporting a porous material between a cover and an installation portion of a duct body, the porous material and the installation are provided. It aims at attaching a porous material to an installation part so that a crevice may not be generated between parts.

Three present inventions include a duct main body formed in a hollow rectangular tube shape, a curved-shaped installation portion provided on a peripheral wall portion of the duct main body so as to bend in a flow direction of air passing through the inside of the duct main body, a duct Opening formed in the installation part so as to penetrate inside and outside of the main body, porous material arranged in the installation part so as to cover the opening from the outside of the duct main body, and ventilation to the opening of the duct main body are possible And the cover is attached to the installation part so as to cover the porous material arranged in the installation part, so that the porous material is sandwiched and supported by the cover and the installation part. The installation portion has a partition wall portion that protrudes toward the cover and is formed in an annular shape surrounding the opening, and the partition wall portion has a plurality of stop portions having hook portions. In the direction along the ring of the partition wall It is distributed so as to be spread out and is provided so as to protrude from the partition wall to the cover side so as to be parallel to each other. The peripheral edge of the cover is provided with a number of mounting holes corresponding to the stoppers, When attached to the installation part so as to cover the porous material disposed in the installation part, the stop part and the hook part are fitted into the attachment hole part, and the hook part is fixed to the attachment hole part, so that the cover is ducted. It is characterized in that it is coupled to the main body, or a partition wall portion is formed on the installation portion so as to protrude toward the cover and surround the opening, and the partition wall portion has a number of mounting holes corresponding to the stop portions. The cover is provided with a plurality of stoppers having hook portions on the peripheral edge of the cover so as to be distributed evenly in a direction along the periphery of the cover and to be parallel to each other. More duct body When the cover is attached to the installation part so as to cover the porous material disposed on the installation part, the stop part and the hook part are fitted into the attachment hole part, and the hook part is attached to the attachment hole part. The cover is connected to the duct body by being fixed to, or the partition portion is formed in an annular shape surrounding the opening and protrudes toward the cover in the installation portion. When attached to the installation part so as to cover the porous material arranged in the installation part, the peripheral part of the cover is bonded to the partition part by ultrasonic welding, vibration welding or thermal welding, or by bonding with an adhesive It is characterized by that. Another three present inventions are a duct main body formed in a hollow rectangular tube shape, an installation part provided in a plane part constituting a peripheral wall part of the duct main body, and an installation part so as to penetrate inside and outside of the duct main body An opening formed on the outer surface of the duct body, a porous material disposed in the installation section so as to cover the opening from the outside of the duct body, and a cover having a through hole that allows ventilation to the opening of the duct body. It is common to be a vehicle air intake duct that is supported by sandwiching the porous material between the cover and the installation part by attaching the cover to the duct body so as to cover the porous material arranged in the installation part In the installation portion, the partition wall portion protrudes toward the cover and is formed in an annular shape surrounding the opening, and the partition wall portion has a plurality of stop portions having hook portions in a direction along the annular shape of the partition wall portion. Dispersed to spread evenly A porous material that is provided so as to protrude from the partition wall to the cover side so that both are parallel to each other, the number of mounting hole portions corresponding to the stop portions are provided in the peripheral edge portion of the cover, and the cover is disposed in the installation portion When the cover is attached to the installation part so as to cover the cover part, the cover part is connected to the duct body by fitting the stop part and the hook part into the attachment hole part and fixing the hook part to the attachment hole part. Alternatively, the installation part is formed with an annular wall that protrudes toward the cover and surrounds the opening, and the partition wall is provided with a number of mounting holes corresponding to the stoppers, and the periphery of the cover. A plurality of stop portions having hook portions are distributed in the portion so as to be distributed evenly in the direction along the periphery of the cover, and project from the cover to the duct body side so as to be parallel to each other. Installed and cover installed When the cover is attached to the installation part so as to cover the porous material, the stop part and the hook part are fitted into the attachment hole part, and the hook part is fixed to the attachment hole part, so that the cover is the duct body. The partition wall portion protrudes toward the cover side and is formed in an annular shape surrounding the opening portion so that the cover covers the porous material disposed in the installation portion. When the cover is attached to the installation portion, the peripheral edge portion of the cover is bonded to the partition wall portion by ultrasonic welding, vibration welding, or thermal welding, or by bonding with an adhesive.

In the present invention, the partition wall is provided with a plurality of stoppers having hook portions so as to be distributed evenly in the direction along the annular shape of the partition wall and at the cover side from the partition wall so as to be parallel to each other. The cover is provided with a number of mounting holes corresponding to the stoppers, or the partition wall is provided with a number of mounting holes corresponding to the stoppers. A plurality of stop portions having hook portions are distributed in the portion so as to be distributed evenly in the direction along the periphery of the cover, and project from the cover to the duct body side so as to be parallel to each other. By being provided, when the cover is attached to the installation part so as to cover the porous material disposed in the installation part, the cover is coupled to the duct body by fixing the hook part to the attachment hole part. Or A gap is generated between the porous material and the installation part because the peripheral edge of the joint is bonded to the partition wall by ultrasonic welding, vibration welding or heat welding or by bonding with an adhesive. In addition, there is an effect that the ventilation resistance inside the duct body can be reduced without excessively sucking hot air in the engine room. In addition, since the partition wall and the stopper project in parallel with each other, when the cover is put on, the plurality of stoppers and the plurality of mounting holes are appropriately fitted, and the cover is attached to the installation part. There is an effect that mounting becomes easy. In the present invention, when the cover is attached to the installation part so as to cover the porous material, the cover wall part is formed in an annular shape that protrudes toward the duct body and surrounds the through hole part. If the wall portion is disposed so as to surround the outer peripheral portion of the partition wall portion of the installation portion, there is an effect that no gap is generated between the peripheral portion of the porous material and the installation portion.

The perspective view which decomposes | disassembles and shows the intake duct for vehicles which concerns on the form 1 for implementing invention. The perspective view which decomposes | disassembles and shows the duct main body which concerns on the form 1 for implementing invention. The perspective view which shows the vehicle intake duct which concerns on the form 1 for implementing invention. FIG. 101 is a sectional view taken along line 101-101 in FIG. 3; FIG. 102 is a sectional view taken along line 102-102 in FIG. 3; The ventilation resistance analysis figure which shows the flow line of the intake duct for vehicles which concerns on form 1 for implementing invention. Sectional drawing equivalent to the 102-102 sectional view taken on the line of the vehicle intake duct which concerns on Embodiment 2 for inventing. Sectional drawing equivalent to the 102-102 sectional view taken on the line of the vehicle intake duct which concerns on Embodiment 3 for inventing. Sectional drawing equivalent to the 102-102 sectional view taken on the line of the vehicle intake duct which concerns on Embodiment 4 for inventing. The top view which shows the vehicle intake duct which concerns on the form 5 for implementing invention. The side view which shows the air intake duct for vehicles which concerns on the form 5 for implementing invention. FIG. 10 is a sectional view taken along line 103-103 in FIG. The perspective view which decomposes | disassembles and shows the intake duct for vehicles which concerns on the form 6 for implementing invention. The perspective view which decomposes | disassembles and shows the duct main body which concerns on the form 6 for implementing invention. The perspective view which shows the vehicle intake duct which concerns on the form 6 for implementing invention. FIG. 16 is a sectional view taken along line 104-104 in FIG. Sectional drawing corresponded in the 104-104 sectional view of the air intake duct for vehicles which concerns on Embodiment 7 for inventing. Sectional drawing equivalent to the 104-104 sectional view of the vehicle intake duct which concerns on Embodiment 8 for inventing. Sectional drawing similar to the 101-101 sectional view taken on the line of a part of the vehicle intake duct according to Embodiment 9 for carrying out the invention. Sectional drawing similar to 101-101 sectional view of a part of vehicle intake duct according to Embodiment 10 for carrying out the invention. The perspective view which decomposes | disassembles and shows a part of vehicle intake duct which concerns on the form 11 for implementing invention. Sectional drawing similar to the 101-101 sectional view of the vehicle intake duct according to Embodiment 11 for carrying out the invention. The perspective view which decomposes | disassembles and shows the conventional vehicle intake duct. The perspective view which shows the air intake duct for vehicles which is proportional. The ventilation resistance analysis figure which shows the flow line of the intake duct for vehicles which is proportional. The perspective view which decomposes | disassembles and shows another conventional vehicle intake duct. The perspective view which decomposes | disassembles and shows another conventional vehicle air intake duct.

In the embodiment for carrying out the invention, portions having the same function are denoted by the same reference numerals and described.

A vehicle intake duct 1 according to a first embodiment for carrying out the invention will be described with reference to FIGS. As shown in FIG. 1, a vehicle intake duct 1 according to Embodiment 1 for carrying out the invention constitutes a conduit for taking outside air into an air cleaner of an internal combustion engine of a vehicle outside the figure, A duct body 2, a porous material 3, and a cover 4 are provided as separately configured members. The duct main body 2 has a hollow rectangular tube shape surrounded by a peripheral wall portion made of four flat portions 5; 6; 7; 8 by a synthetic resin, while the straight pipe portion 9; And is configured as a curved pipe that changes the flow direction 12 of the air passing through the inside of the duct body 2 into a direction parallel to the plane portions 5; 6 and a direction intersecting the plane portions 5; 6. Due to the presence of the straight pipe portions 9; 10 and the curved pipe portion 11, the duct main body 2 is a curved pipe that bends in a direction parallel to the air flow direction 12 passing through the inside of the duct main body 2. One end of the duct body 2 constitutes a side for introducing outside air. The other end of the duct body 2 constitutes a side for supplying outside air to the air cleaner. The straight pipe portion 9 is arranged on one end side of the duct body 2. The straight pipe portion 10 is disposed on the other end side of the duct body 2. The curved pipe portion 11 is a portion that connects the

straight pipe portions

9 and 10 to each other.

The installation part 14 is provided in the outer surface of the one plane part 6 of the duct main body 2 as a part which arrange | positions the porous material 3. FIG. The installation part 14 is a model formed in a curved surface shape in a direction parallel to the air flow direction 12 passing through the inside of the duct body 2 across the straight pipe part 9 and the curved pipe part 11. The installation portion 14 is provided with an opening 15, a crosspiece 16, a partition wall 17, and a projection 18. The opening 15 penetrates the duct body 2 inside and outside, and a plurality of openings 15 are provided across the straight pipe portion 9 and the curved pipe portion 11. The plurality of openings 15 are partitioned from each other by a crosspiece 16. The surface on the cover 4 side of the installation portion 14 and the surface on the cover 4 side of the crosspiece portion 16 constitute a uniform surface.

The partition wall portion 17 protrudes from the outer peripheral portion of the installation portion 14 toward the cover 4 so as to be at a predetermined angle with respect to the outer surface of the straight pipe portion 9, that is, parallel to each other, and includes a plurality of It is formed in an annular shape surrounding the opening 15 and the crosspiece 16. The outer surface of the straight pipe portion 9 is a surface of the straight pipe portion 9 on the cover 4 side. In the following description, the predetermined angle is an angle that coincides with a direction in which the duct body 2 or the cover 4 is molded from the mold after being molded with the mold, and is not limited to a right angle. The partition wall portion 17 is not limited to modeling that is continuous without a break in the direction surrounding the opening 15 and the crosspiece 16, and can be applied to modeling with a cut. The height of the partition wall 17 protruding from the installation portion 14 toward the cover 4 is smaller than the thickness of the porous material 3. That is, in a state where the porous material 3 is accommodated inside the partition wall portion 17 and contacts the installation portion 14 and the crosspiece portion 16 and covers all of the plurality of openings 15, a part of the porous material 3 is the partition wall. It protrudes to the cover 4 side from the portion 17.

The partition wall portion 17 is provided with a plurality of stop portions 19. The stoppers 19 are distributed in a distributed manner so as to be distributed uniformly in the direction along the annular shape of the partition wall 17, and are parallel to each other so as to have a predetermined angle with respect to the outer surface of the straight pipe portion 7. It protrudes to the cover 4 side from the protruding end surface of the partition wall portion 17. In FIG. 1, the stop portions 19 are distributed in a distributed manner so as to be distributed uniformly in the direction along the annular shape of the partition wall portion 17 such that a plurality of the stop portions 19 are distributed in each of the upper and lower sides and the left and right side portions of the partition wall portion 17. ing. A hook portion 20 is provided at the tip of the stop portion 19. The convex portion 18 protrudes so as to stand at a predetermined angle on the cover 4 side from a portion located on the opening portion 15 side of the installation portion 14 and surrounds the plurality of opening portions 15 and the crosspiece portions 16. It is formed in an annular shape. The convex portion 18 is not limited to modeling that is continuous without a break in the direction surrounding the opening 15 and the crosspiece 16, and can be applied to modeling with a cut.

The porous material 3 is a member that is disposed in the installation portion 14 in order to absorb resonance vibration caused by outside air sucked into the internal combustion engine of the vehicle from the duct body 2 and reduce intake noise, and has a breathable nonwoven fabric. Thus, the shape in the direction along the air flow direction 12 passing through the inside of the duct body 2 is formed in the same curved shape as that of the installation portion 14 so as to reduce the airflow resistance inside the duct body 2. Thereby, the porous material 3 in FIG. 1 has an area larger than that of the conventional flat plate-shaped porous material 1002 in FIG. 23 and the sound absorption characteristics are improved. The porous material 3 is formed in a curved shape having a size that fits inside the partition wall portion 17. When the porous material 3 is placed on the installation portion 14, the porous material 3 is accommodated inside the partition wall portion 17 and comes into contact with the installation portion 14 and the crosspiece portion 16 so that all of the plurality of openings 15 are formed. To cover.

The cover 4 has a size that covers the porous material 3 and the partition wall portion 17 with a synthetic resin and is formed in the same curved shape as the installation portion 14. The cover 4 is provided with a through hole portion 22, a crosspiece portion 23, an attachment hole portion 24, a covering wall portion 25, a concave portion 26, and a convex portion 27. The through-hole part 22 enables ventilation to the opening part 15, and a plurality of through-hole parts 22 are provided so as to relate to each of the plurality of opening parts 15. The plurality of through-hole portions 22 are partitioned by a crosspiece 23. A plurality of attachment holes 24 are provided corresponding to each of the plurality of stoppers 19 across the peripheral edge portion of the cover 4 and the cover wall portion 25, and the outer surface of the straight pipe portion 9 in the cover 4. Are formed so as to be at a predetermined angle with respect to the plane portion parallel to the surface. The covering wall portion 25 is formed from the peripheral portion of the cover 4 to the duct body 2 so as to be at a predetermined angle with respect to a plane portion parallel to the outer surface of the straight pipe portion 9 in the cover 4. It protrudes to the side and is formed in an annular shape surrounding the plurality of through-hole portions 22 and the crosspieces 23. The covering wall part 25 is not limited to the shaping | molding which continues without a cut | interruption in the direction surrounding the through-hole part 22 and the crosspiece 23, The shaping | molding which provided the cut | interruption is applicable. Moreover, you may provide a cut in both the partition part 17 and the covering wall part 25. FIG.

The duct body 2 may be configured as a pipe formed in one hollow rectangular tube shape by injecting a synthetic resin material into a mold, but for implementing the invention as shown in FIG. In Embodiment 1, the case where it comprised from the two main body structure bodies 29; 30 formed by inject | pouring a synthetic resin material into a shaping | molding die was illustrated.

Referring to FIG. 2, two main body components 29; 30 according to Embodiment 1 for carrying out the invention will be described. One main body constituting body 29 includes one flat surface portion 5 where the installation portion 14 is not provided, a flat surface portion 31; 32 protruding from the flat surface portion 5 to the inside of the duct main body 2, and the flat surface portion 31; 2 and a flange portion 33; 34 protruding outward. The other main body constituting body 30 includes one flat surface portion 6 provided with the installation portion 14, a flat surface portion 35; 36 protruding from the flat surface portion 6 to the inside of the duct main body 2, and the flat surface portion 35; And

flange portions

37 and 38 projecting outward.

Then, the two main body components 29; 30 are combined so as to form one hollow rectangular tube shape, the flange portions 33; 37 are joined to each other in a sealing manner, and the flange portions 34; 38 are joined to each other in a sealing manner. Is done. Accordingly, as shown in FIG. 4, the plane portion 31; 35 constitutes one plane portion 7 where the installation portion 14 is not provided, and the plane portion 32; 36 is one plane where the installation portion 14 is not provided. The part 8 is configured, and the two main body constituting bodies 29; 30 are configured as the duct main body 2 shown in FIG.

As shown by the phantom lines in FIG. 4 and FIG. 5, when the cover wall portion 25 is provided on the cover 4, a recess 26 is formed in a portion of the cover 4 located on the duct body 2 side. The height of the cover wall portion 25 protruding from the cover 4 toward the duct body 2 is smaller than the height of the partition wall portion 17. That is, in the state where the porous material 3 is accommodated inside the partition wall portion 17 and contacts the installation portion 14 and the crosspiece portion 16 and covers all of the plurality of openings 15, the cover 4 is covered with the porous material 3 and the partition wall. In the case where the stopper 17 and the hook 20 are fitted into the mounting hole 24, the hook 20 is fixed to the mounting hole 24, and the cover 4 is coupled to the duct body 2, the cover 17 is covered. 4 presses the porous material 3 so as not to float on the installation part 14.

The concave portion 26 is shaped to open to the duct body 2 side of the cover 4 and surrounded by the covering wall portion 25. The convex portion 27 protrudes from the portion located on the cover wall portion 25 side of the cover 4 so as to stand at a predetermined angle on the duct body 2 side, and includes a plurality of through-hole portions 22 and crosspiece portions 23. It is formed in an annular shape surrounding. The convex portion 27 is not limited to modeling that is continuous without a break in the direction surrounding the through-hole portion 22 and the crosspiece 23, and is also applicable to modeling with a cut. Moreover, you may provide a cut in both the convex part 18 and the convex part 27. FIG.

Further, the convex portions 18 of the duct main body 2 and the convex portions 27 of the cover 4 are alternately arranged in a direction parallel to the flat portion 6 of the duct main body 2 when the cover 4 is attached to the duct main body 2. It is configured. 4 and 5 exemplify the case where the convex portion 18 is arranged on the opening 15 side in a direction parallel to the flat portion 6 of the duct body 2 with respect to the convex portion 27. On the other hand, although not shown, the present invention can be applied even when the convex portion 18 is disposed on the partition wall 17 side in a direction parallel to the flat portion 6 of the duct body 2 with respect to the convex portion 27.

The case where the porous material 3 is attached to the duct body 2 with the cover 4 will be described with reference to FIGS. As shown by solid lines in FIGS. 4 and 5, the porous material 3 is accommodated inside the partition wall portion 17. Thereby, the porous material 3 is appropriately arranged on the installation portion 14, and the peripheral portion of the porous material 3 does not turn up from the installation portion 14, and the porous material 3 contacts the installation portion 14 and the crosspiece 16. Thus, all of the plurality of openings 15 are covered. Next, the cover 4 indicated by an imaginary line is placed on the porous material 3 and the partition wall 17 as indicated by a solid line. When the cover 4 is thus covered, the partition wall 17, the stopper 19, and the covering wall 25 protrude in parallel with each other so as to have a predetermined angle with respect to the outer surface of the straight pipe portion 9. Since the cover 4 is covered from the direction of a predetermined angle with respect to the outer surface of the straight pipe portion 9, all the mounting hole portions 24 of the cover 4 are fitted into all the stop portions 19, so that the installation portion of the cover 4 Attachment to 14 becomes easy.

Further, as all the stop portions 19 and all the hook portions 20 are fitted into all the mounting hole portions 24, the peripheral portion of the cover 4, the crosspiece portion 23, and the convex portion 27 form the porous material 3. 14, all the hook portions 20 are fixed to all the mounting hole portions 24, and the cover 4 is coupled to the duct body 2. In this way, when the cover 4 is coupled to the duct body 2, the stoppers 19 are dispersed and arranged so as to be evenly distributed in the direction along the annular shape of the partition wall portion 17, so that the cover 4 is a peripheral portion of the porous material 3. The peripheral portion of the porous material 3 can be pressed against the installation part 14 so that no gap is generated between the installation part 14 and the installation part 14.

Further, when the cover 4 is coupled to the duct body 2, the cover wall portion 25 of the cover 4 is disposed so as to surround the outer peripheral portion of the partition wall portion 17 of the installation portion 14, and the cover 4 and the installation portion 14 are porous materials. 3 is compressed and sandwiched and supported, so that no gap is generated between the peripheral portion of the porous material 3 and the installation portion 14, so that the air does not suck in excessive hot air in the engine room and the air is ducted. The ventilation resistance when passing through the inside of the main body 2 can be reduced. Further, the porous material 3 is sandwiched between the crosspiece 16 of the duct main body 2 and the crosspiece 23 of the cover 4, thereby preventing the porous material 3 from dropping.

4 and 5, when the curved porous material 3 is supported by being sandwiched between the installation portion 14 and the cover 4, the convex portions 18; 27 are the peripheral edges of the porous material 3. Since the portions are alternately compressed in the direction parallel to the plane portion 6, the positional shift of the porous material 3 can be prevented, and the peripheral edge of the porous material 3 can be brought into close contact with the installation portion 14 without generating a gap. It is possible to prevent excessive suction of hot air in the engine room from the peripheral edge of the porous material 3. Further, since the cover wall portion 25 is provided on the cover 4, the shape of the cover 4 is appropriately maintained as compared with a plate-like structure in which the cover 4 is not provided with the cover wall portion 25. It is also possible to remove one or both of the convex portions 18;

In addition, although illustration is abbreviate | omitted, you may couple | bond the cover 4 and the stop part 19 mutually by either ultrasonic welding, vibration welding, thermal welding, or adhesion | attachment by an adhesive material. In this case, the hook portion 20 is bonded to the cover 4 by any one of ultrasonic welding, vibration welding, and heat welding, or bonded by an adhesive, or the hook portion 20 is not provided on the stopper portion 19. It is conceivable that the portion 19 is bonded to the cover 4 by any one of ultrasonic welding, vibration welding, and heat welding or by bonding with an adhesive. The stop portion 19 may be removed, and the cover 4 may be coupled to the installation portion 14 with a fixing tool such as a rivet or a screw.

As shown in FIG. 6, as an analysis of the ventilation resistance of the assembled vehicle intake duct 1, the area when the vehicle intake duct 1 is cut in a direction orthogonal to the flow of intake air = 3914 mm ² , the vehicle intake duct 24, an air flow of 10 m ³ / min was flowed, and the pressure loss near the outlet of the vehicle intake duct 1 was obtained by analysis. As a result, pressure loss = −654 Pa, and this pressure loss = −654 Pa is The pressure loss in the conventional vehicle intake duct 1001 shown is improved by about 13% from −752 Pa. Moreover, the streamline display by analysis of ventilation resistance was the result shown in FIG. In FIG. 6, 39 indicates a streamline of air entering the

duct body

2, and 40 indicates a streamline of air entering the duct body 2 from the porous material 3 and the opening 15. Considering this FIG. 6, since the streamlines in the straight pipe portion 9 and the curved pipe portion 11 of the duct body 2 are not disturbed, the ventilation resistance is small.

Referring to FIG. 7, a vehicle intake duct 1 according to Embodiment 2 for carrying out the invention will be described. A vehicle intake duct 1 according to a second embodiment for carrying out the invention is configured in a flat plate shape in which a porous material 3 has flexibility. The porous material 3 is disposed on the installation portion 14, the cover 4 is covered with the porous material 3 and the partition wall portion 17, and the cover wall portion 25 is disposed on the outer peripheral portion of the partition wall portion 17. 27 compresses the porous material 3 toward the installation portion 14, the stop portion 19 and the hook portion 20 are fitted into the attachment hole portion 24, and the hook portion 20 is fixed to the attachment hole portion 24. Is connected to the duct body 2, the covering wall portion 25 is disposed so as to surround the outer peripheral portion of the partition wall portion 17, and the cover 4 and the installation portion 14 are supported by compressing and sandwiching the porous material 3.

Referring to FIG. 8, a vehicle intake duct 1 according to Embodiment 3 for carrying out the invention will be described. In the vehicle intake duct 1 according to the third embodiment for carrying out the invention, the installation portion 14 is located on the straight pipe portion 10 positioned on the downstream side in the air flow direction 12 through the inside of the duct body 2 with respect to the curved pipe portion 11. The height at which the upstream side in the air flow direction 12 through which the installation part 14 and the partition part 17 pass through the inside of the duct body 2 protrudes from the flat part 5 of the straight pipe part 10 toward the cover 4 is the highest. The height at which the downstream side in the air flow direction 12 passing through the inside of the duct body 2 projects from the flat portion 5 of the straight pipe portion 10 toward the cover 4 is the lowest. In other words, the installation portion 14 is provided on the flat surface portion 5, and the installation portion 14 and the partition wall portion 17 have a smooth height from the upstream side to the downstream side in the air flow direction 12 passing through the inside of the duct body 2. It is a shape that gets lower. Therefore, the curved surface shape of the cover 4, the installation part 14, and the porous material 3 is configured to be different from the curved surface shape of the cover 4, the installation part 14, and the porous material 3 shown in FIG. 1. Although the porous material 3 of FIG. 8 is less bent than the porous material 3 of FIG. 1, the air flow resistance is reduced by eliminating steps at the installation portion 14 as much as possible. Further, the porous material 3 in FIG. 8 has an area larger than that of the conventional flat plate-shaped porous material 1002 in FIG. In FIG. 8, the bent tube portion 11 is directed from the bent tube portion 11 toward the straight tube portion 10 so that the flat portion 5 is disposed on the outer peripheral side of the bend and the flat portion 6 is disposed on the inner peripheral side of the bend. The case where it turned and was illustrated. On the other hand, the curved pipe part 11 is bent from the curved pipe part 11 toward the straight pipe part 10 so that the surface part 5 is arranged on the inner peripheral side of the bend and the flat part 6 is arranged on the outer peripheral side of the bend. Even in this case, the present invention can be similarly applied by replacing the flat portion 5 in FIG. 8 with the flat portion 6.

Referring to FIG. 9, a vehicle intake duct 1 according to a fourth embodiment for carrying out the invention will be described. In the vehicle intake duct 1 according to Embodiment 4 for carrying out the invention, the positions of the crosspieces 16 of the duct main body 2 and the crosspieces 23 of the cover 4 are staggered in the air flow direction 12 passing through the inside of the duct main body 2. It is configured. And the porous material 3 is arrange | positioned at the installation part 14, the cover 4 is covered by the porous material 3 and the partition part 17, the convex part 27 compresses the porous material 3 to the installation part 14, and the stop part 19 And the hook portion 20 are fitted into the attachment hole portion 24, and the hook portion 20 is fixed to the attachment hole portion 20, whereby the cover 4 is coupled to the duct body 2 and the covering wall portion 25 is the outer peripheral portion of the partition wall portion 17. The cover 4 and the installation part 14 are compressed and sandwiched to support the porous material 3.

A vehicle intake duct 1 according to a fifth embodiment for carrying out the invention will be described with reference to FIGS. As shown in FIGS. 10 and 11, the duct main body 2 in the vehicle intake duct 1 according to the fifth embodiment for carrying out the invention is a curved pipe twisted about the air flow direction 12 passing through the inside of the duct main body 2. Configured as In particular, as shown in FIGS. 11 and 12, each of the two flat portions 5; 6 of the duct body 2 has a curved portion parallel to the air flow direction 12 passing through the inside of the duct body 2. The porous material 3 is individually disposed on each of the two installation portions 3, and the cover 4 is individually attached to both the installation portions 3.

Specifically, in FIG. 12, one porous material 3 indicated by a solid line is disposed on one installation portion 14 of the flat surface part 5, and one porous material 3 indicated by a virtual line is indicated by a solid line. As one covering wall portion 25 is fitted into one partition wall portion 17 and covered with the material 3 and one partition wall portion 17, one convex portion 27 attaches one porous material 3 to one installation portion 14. One of the stoppers 19 and one of the hooks 20 is fitted into one of the mounting holes 24, and the one of the hooks 20 is fixed to the one of the mounting holes 24. 4 is coupled to the duct body 2, one covering wall portion 25 is disposed so as to surround the outer peripheral portion of one partition wall portion 17, and one cover 4 and one installation portion 14 form one porous material 3. Compress and support with pinching. Further, the other porous material 3 indicated by the solid line is disposed on the other installation portion 14 of the plane portion 6, and the other porous material 3 and the other partition wall portion are indicated by the other cover 4 indicated by the phantom line as indicated by the solid line. 17, the other convex portion 27 compresses the other porous material 3 toward the other installation portion 14, and the other stop portion 19 and the other hook portion 20 are fitted into the other mounting hole portion 24. Then, the other hook portion 20 is fixed to the other mounting hole portion 24, whereby the other cover 4 is coupled to the duct body 2, and the other cover wall portion 25 surrounds the outer peripheral portion of the other partition wall portion 17. The other cover 4 and the other installation part 14 compress and sandwich the other porous material 3 to support it.

With reference to FIG. 13 thru | or FIG. 16, the vehicle intake duct 1 which concerns on the form 6 for implementing invention is demonstrated. As shown in FIG. 13, a vehicle intake duct 1 according to a sixth embodiment for carrying out the invention is a hollow rectangular tube-shaped straight pipe surrounded by a synthetic resin and surrounded by a peripheral wall portion composed of four flat portions 5 to 8. Configured. In addition, the side of the duct body 2 where the outside air is introduced is located after the direction intersecting the air flow direction 12 passing through the inside of the duct body 2 from the peripheral wall portion constituting the flat portion 5 where the installation portion 14 is not provided. It is provided so as to protrude to the side. The side connected to the air cleaner at the other end of the duct body 2 is the front side in the direction intersecting the flow direction 12 of the air passing through the inside of the duct body 2 from the peripheral wall portion constituting the flat portion 6 provided with the installation portion 14. It is provided so as to protrude. That is, the air that has flowed into the duct body 2 from the rear side of one end of the duct body 2 is guided to the installation portion 14 side by bending the peripheral wall portion that constitutes the flat surface portion 6 toward the outer periphery side of the bend. After that, the peripheral wall portion constituting the flat surface portion 6 is bent so as to become the inner peripheral side of the curve as it goes from the installation portion 14 side to the other end portion side of the duct body 2, and the front side of the other end portion of the duct body 2. To reach.

When the duct body 2 is viewed from the installation section 14 side, the

plane sections

5 and 6 are edges on the plane section 7 side as they go from the upstream side to the downstream side in the air flow direction 12 passing through the inside of the duct body 2. And arcuate modeling in which the width between the flat portion 8 and the edge portion on the flat portion 8 side is wide. An installation portion 14 is provided on the flat surface portion 6 constituting one of the peripheral wall portions of the duct body 2. The installation portion 14 is provided with an opening 15, a crosspiece 16, a partition wall 17, and a projection 18. A plurality of openings 15 are provided as rectangular windows that penetrate the inside and outside of the duct body 2. The plurality of openings 15 are partitioned from each other by a crosspiece 16. The surface on the cover 4 side of the installation portion 14 and the surface on the cover 4 side of the crosspiece portion 16 constitute a uniform surface.

The height of the installation portion 14 and the partition wall portion 17 projecting toward the cover 4 from the upstream plane portion 6 in the air flow direction 12 passing through the inside of the duct body 2 is the highest. The height at which the downstream side in the air flow direction 12 passing through the side protrudes from the flat portion 6 toward the cover 4 is the lowest. In other words, the installation part 14 and the partition part 17 are shaped so that the height smoothly decreases from the upstream side to the downstream side in the air flow direction 12 passing through the inside of the duct body 2.

The partition wall 17 projects from the outer peripheral portion of the installation portion 14 toward the cover 4 so as to be at a predetermined angle with respect to the flat surface portion 6, that is, parallel to each other, and includes a plurality of openings 15 and It is formed in an annular shape surrounding the crosspiece 16. The partition wall portion 17 is not limited to modeling that is continuous without a break in the direction surrounding the opening 15 and the crosspiece 16, and can be applied to modeling with a cut. The height of the partition wall 17 protruding from the installation portion 14 toward the cover 4 is smaller than the thickness of the porous material 3. That is, in a state where the porous material 3 is accommodated inside the partition wall portion 17 and contacts the installation portion 14 and the crosspiece portion 16 and covers all of the plurality of openings 15, a part of the porous material 3 is the partition wall. It protrudes to the cover 4 side from the portion 17.

The plurality of stop portions 19 provided in the partition wall portion 17 are distributed and distributed so as to be evenly distributed in the direction along the annular shape of the partition wall portion 17 and have a predetermined angle with respect to the flat surface portion 6. That is, it protrudes from the protruding end face of the partition wall portion 17 toward the cover 4 so as to be parallel to each other. In FIG. 12, an example is shown in which the stop portions 19 are distributed and arranged so that there are three on the upper piece portion of the partition wall portion 17, three pieces on the lower piece portion, one piece on the left piece portion, and two pieces on the right piece portion. did. The number of the plurality of stop portions 19 provided on the upper and lower piece portions and the left and right piece portions of the partition wall portion 17 is not limited to the above-mentioned number. If the plurality of stoppers 19 are provided in the form shown in FIG. 13 on the upper and lower piece portions and the left and right piece portions of the partition wall portion 17, the cover 4 can be installed. When attached to the portion 14, the cover 4 is appropriately attached so as not to make a mistake in the vertical and horizontal directions. A hook portion 20 is provided at the tip of the stop portion 19.

The convex portion 18 provided in the installation portion 14 protrudes toward the cover 4 so as to be at a predetermined angle with respect to the plane portion 6, that is, in parallel with each other, and has a plurality of openings 15 and It is formed in an annular shape surrounding the crosspiece 16. The porous material 3 arranged in the installation part 14 is configured to have a flexible flat plate shape by a non-woven fabric having air permeability. The cover 4 is provided with a through hole portion 22, a crosspiece portion 23, an attachment hole portion 24, a covering wall portion 25, a concave portion 26, and a convex portion 27. The height of the cover wall portion 25 protruding from the cover 4 toward the duct body 2 is smaller than the height of the partition wall portion 17. The convex portion 27 protrudes from the cover 4 toward the duct body 2 so as to have a predetermined angle with respect to the flat portion 6 and is formed in an annular shape surrounding the plurality of openings 15 and the crosspieces 16. .

Referring to FIG. 14, two main body constituting bodies 29; 30 constituting the duct main body 2 according to the sixth embodiment for carrying out the invention will be described. One main body constituting body 29 includes one flat surface portion 5 where the installation portion 14 is not provided,

flat surface portions

31 and 32 that individually protrude from the flat surface portion 5 toward the inside of the duct main body 2, and these flat surface portions. 34; 35 and a flange portion 33; 34 individually protruding outside the duct body 2 from the duct body 2. The other main body constituting body 30 includes one flat surface portion 6 provided with the installation portion 14, a flat surface portion 35; 36 individually protruding from the flat surface portion 6 to the inside of the duct main body 2, and these flat surface portions 35; 36, and

flange portions

37 and 38 that individually protrude from the duct body 2 to the outside.

Then, the two main body constituting bodies 29; 30 are combined so as to form one hollow rectangular tube shape, the flange portions 33; 37 are joined to each other in a sealing manner, and the flange portions 34; 38 are sealed to each other. Are joined together. Thereby, a pair of plane parts 31; 35 constitutes one plane part 7 in which the installation part 14 is not provided (see FIG. 13), and a pair of plane parts 32; 36 is not provided in the installation part 14. One plane portion 8 is configured (see FIG. 13), and two main body constituting bodies 29; 30 are configured as the duct main body 2 including the installation portion 14.

Referring to FIG. 16, the case where the porous material 3 is attached to the installation portion 14 of the duct body 2 according to the sixth embodiment for carrying out the invention with the cover 4 will be described. The porous material 3 is disposed in the installation portion 14, and the cover 4 indicated by the phantom line is covered with the porous material 3 and the partition portion 17 as indicated by the solid line, and the stop portion 19 and the hook portion 20 are attached to the attachment hole portion 19. The cover 4 is coupled to the duct body 2 by being fitted and the hook portion 20 is fixed to the attachment hole portion 24, and the cover 4 and the installation portion 14 are supported with the porous material 3 interposed therebetween. Thus, the vehicle intake duct 1 according to the sixth embodiment for carrying out the invention is configured in the shape shown by the solid line in FIG. 16, and the same operation and the same as the vehicle intake duct 1 according to the first embodiment for carrying out the invention, and There is an effect.

Referring to FIG. 17, a vehicle intake duct 1 according to a seventh embodiment for carrying out the invention will be described. The installation portion 14 of the vehicle intake duct 1 according to the seventh embodiment for carrying out the invention is configured as an outer surface of the flat portion 6, and the height protruding from the flat portion 6 of the partition wall portion 17 toward the cover 4 is a flat portion. 6, the cover 4 is formed in a plate shape parallel to the plane portion 6, and the height of the cover wall portion 12 protruding from the cover 4 toward the duct body 2 is configured in parallel to the plane portion 6. . And the porous material 3 is arrange | positioned in the installation part 14, the stop part 19 and the hook part 20 are engage | inserted in the attachment hole part 24, the hook part 20 is fixed to the attachment hole part 24, and the cover 4 is attached to the duct main body 2. The porous material 3 is disposed in the vicinity of the duct body 2 by being coupled and the installation portion 14 and the cover 4 compressing and supporting the porous material 3.

Referring to FIG. 18, a vehicle intake duct 1 according to an eighth embodiment for carrying out the invention will be described. In the vehicle intake duct 1 according to Embodiment 8 for carrying out the invention, the positions of the crosspieces 16 of the duct body 2 and the crosspieces 23 of the cover 4 are staggered in the air flow direction 12 passing through the inside of the duct body 2. By being configured, the interval in the flow direction 12 of the air passing through the inside of the duct body 2 at the crosspiece 16 and the crosspiece 23 is narrow. The difference between the vehicle intake duct 1 shown in FIG. 18 and the vehicle intake duct 1 shown in FIG. 9 is that the installation portion 14 of FIG. 18 is flat in the air flow direction 12 passing through the inside of the duct body 2. On the other hand, the installation part 14 in FIG. 9 is a curved surface along the flow direction 12 of the air passing through the inside of the duct body 2.

Referring to FIG. 19, a vehicle intake duct 1 according to Embodiment 9 for carrying out the invention will be described. In the vehicle intake duct 1 according to the ninth embodiment for carrying out the invention, as shown by the phantom line in FIG. 19, the stop portion 19 (see FIG. 4) and the hook portion 20 (see FIG. 4) are removed from the duct body 2. As shown by a solid line in FIG. 19, the mounting hole 24 (see FIG. 4), the cover wall 25 (see FIG. 4), and the recess 26 (see FIG. 4) are removed from the cover 4. Then, as shown by a solid line in FIG. 19, after the cover 4 is covered with the porous material 3 and the partition wall portion 17, the peripheral edge portion of the cover 4 and the partition wall portion 17 are given ultrasonic waves and bonded to each other over the entire circumference. As a result, the installation portion 14 of the duct body 2 and the cover 4 are compressed and sandwiched and supported by the porous material 3.

Referring to FIG. 20, a vehicle intake duct 1 according to a tenth embodiment for carrying out the invention will be described. In the vehicle intake duct 1 according to the tenth embodiment for carrying out the invention, the height of the partition wall 17 protruding from the installation portion 14 toward the cover 4 is larger than the thickness of the porous material 3. The height of the protrusion 27 protruding from the cover 4 toward the duct body 2 is larger than the height of the protrusion 27 shown in FIG. 4 so that the protrusion 27 compresses the porous material 3 toward the installation portion 14. Is also a large dimension. And the porous material 3 is arrange | positioned at the installation part 14, the cover 4 is covered by the porous material 3 and the partition part 17, the convex part 27 compresses the porous material 3 to the installation part 14, and the stop part 19 And the hook portion 20 are fitted into the attachment hole portion 24, and the hook portion 20 is fixed to the attachment hole portion 24, whereby the cover 4 is coupled to the duct body 2 and the cover wall portion 25 is the outer peripheral portion of the partition wall portion 17. The cover 4 and the installation part 14 are compressed and sandwiched to support the porous material 3.

Referring to FIG. 21 and FIG. 22, a vehicle intake duct 1 according to an eleventh embodiment for carrying out the invention will be described. As shown in FIG. 21, in the vehicle intake duct 1 according to the eleventh embodiment for carrying out the invention, the mounting hole portion 24 is provided on the duct body 2 side, and the stop portion 19 and the hook portion 20 are on the cover 4 side. It is the structure provided in. Specifically, the attachment hole portion 24 is provided in the partition wall portion 17, and the stop portion 19 is provided in the covering wall portion 25. A pair of grooves 41 are formed in the cover wall portion 25 from the end surface on the duct body 2 side to the cover 4 side. The elastic piece left between the pair of grooves 41 is the stopper 19. The height of the stopper 19 protruding from the cover 4 toward the duct body 2 is smaller than the height of the cover wall 25 protruding from the flat portion 6 toward the cover 4. A hook 20 is provided at the end of the stop 19 on the duct body 2 side.

In FIG. 22, the porous material 3 is disposed on the installation portion 14, the cover 4 is covered with the porous material 3 and the partition wall portion 17, and the convex portion 27 compresses the porous material 3 toward the installation portion 14. The stop portion 19 and the hook portion 20 are fitted into the attachment hole portion 24, and the hook portion 20 is fixed to the attachment hole portion 20, whereby the cover 4 is coupled to the duct body 2 and the covering wall portion 25 is the partition wall portion. 17 is arranged so as to surround the outer peripheral portion of 17, and the cover 4 and the installation portion 14 are supported by compressing and sandwiching the porous material 3.

Although not shown, in the vehicle air intake duct 1 according to the sixth embodiment for carrying out the invention shown in FIG. 15, the present invention can be applied even when the porous material 3 is disposed on the flat portion 5; 6 of the duct body 2. . The structure in which the porous material 3 is arranged on the flat portions 5; 6 of the duct body 2 is shaped corresponding to FIG.

Claims

A duct body formed in a hollow rectangular tube shape, a curved-shaped installation part provided to bend in the flow direction of air passing through the inside of the duct body on the peripheral wall portion of the duct body, and the inside and outside of the duct body penetrate An opening formed in the installation part, a porous material arranged in the installation part so as to cover the opening from the outside of the duct body, and a through hole that allows ventilation from the outside of the duct body to the opening An air intake for a vehicle in which the porous material is sandwiched and supported by the cover and the installation portion by being attached to the installation portion so as to cover the porous material disposed in the installation portion The installation part is formed in a ring shape with a partition wall projecting toward the cover and surrounding the opening, and the partition wall has a plurality of stoppers having hook portions in a direction along the ring of the partition wall. Dispersed to spread evenly Are provided so as to protrude from the partition wall toward the cover so as to be parallel to each other, and a number of mounting holes corresponding to the stoppers are provided on the peripheral edge of the cover, and the cover is disposed on the installation part. When attached to the installation part so as to cover the porous material, the stop part and the hook part are fitted into the attachment hole part, and the hook part is fixed to the attachment hole part, so that the cover is coupled to the duct body. An air intake duct for a vehicle.
A duct body formed in a hollow rectangular tube shape, a curved-shaped installation part provided to bend in the flow direction of air passing through the inside of the duct body on the peripheral wall portion of the duct body, and the inside and outside of the duct body penetrate An opening formed in the installation part, a porous material arranged in the installation part so as to cover the opening from the outside of the duct body, and a through hole that allows ventilation from the outside of the duct body to the opening An air intake for a vehicle in which the porous material is sandwiched and supported by the cover and the installation portion by being attached to the installation portion so as to cover the porous material disposed in the installation portion The installation part has a partition wall portion protruding into the cover side and formed in an annular shape surrounding the opening, and the partition wall portion is provided with a number of mounting holes corresponding to the stop portions, and the peripheral edge portion of the cover Has a plurality of stops with hooks. Are distributed so as to be distributed uniformly in the direction along the periphery of the cover, and are provided so as to protrude from the cover toward the duct body so as to be parallel to each other, and the cover is disposed in the installation portion. When attached to the installation part so as to cover the material, the cover and the hook part are fitted into the attachment hole part, and the hook part is fixed to the attachment hole part, so that the cover is joined to the duct body. An air intake duct for vehicles.
A duct body formed in a hollow rectangular tube shape, an installation part provided in a flat part constituting the peripheral wall part of the duct body, an opening formed in the installation part so as to penetrate inside and outside of the duct body, A porous material disposed in the installation part so as to cover the opening from the outside of the duct body, and a cover having a through-hole part that allows ventilation from the outside of the duct body to the opening, the cover being the installation part It is a vehicle air intake duct that is supported by being sandwiched between a cover and an installation part by being attached to the duct body so as to cover the porous material arranged in the wall, and the installation part has a partition wall part It is formed in an annular shape that protrudes to the cover side and surrounds the opening, and a plurality of stoppers having hook portions are distributed and arranged in the partition portion so as to spread evenly in the direction along the annular shape of the partition portion. So that they are parallel to each other It is provided so as to protrude from the cover to the cover side, and the number of mounting holes corresponding to the stoppers is provided on the peripheral edge of the cover, and the cover is attached to the installation part so as to cover the porous material arranged in the installation part. In the vehicle intake duct, the stop portion and the hook portion are fitted into the attachment hole portion, and the hook portion is fixed to the attachment hole portion, so that the cover is coupled to the duct body.
A duct body formed in a hollow rectangular tube shape, an installation part provided on the outer surface of the flat part constituting the peripheral wall part of the duct body, and an opening formed in the installation part so as to penetrate inside and outside of the duct body And a cover having a porous material disposed in the installation portion so as to cover the opening from the outside of the duct main body, and a through hole portion that allows ventilation from the outside of the duct main body to the opening. Is a vehicle air intake duct that is supported by being sandwiched between the cover and the installation part by being attached to the installation part so as to cover the porous material disposed in the installation part. The partition wall portion protrudes toward the cover and is formed in an annular shape surrounding the opening. The partition wall portion is provided with a number of mounting hole portions corresponding to the stopper portions, and the cover has a plurality of hook portions on the peripheral edge portion. In the direction that the stop part follows the periphery of the cover When the cover is installed so as to cover the porous material placed in the installation part, being distributed so as to spread evenly and provided to protrude from the cover to the duct body side so as to be parallel to each other Further, the air intake duct for a vehicle is characterized in that the stop portion and the hook portion are fitted into the attachment hole portion, and the hook portion is fixed to the attachment hole portion so that the cover is coupled to the duct body.
When the cover is attached to the installation part so that the cover wall part protrudes toward the duct body and surrounds the through-hole part and covers the porous material, the cover wall part is the partition part of the installation part. The vehicle intake duct according to any one of claims 1 to 4, wherein the vehicle intake duct is disposed so as to surround an outer periphery of the vehicle.
A duct body formed in a hollow rectangular tube shape, a curved-shaped installation part provided to bend in the flow direction of air passing through the inside of the duct body on the peripheral wall portion of the duct body, and the inside and outside of the duct body penetrate An opening formed in the installation part, a porous material arranged in the installation part so as to cover the opening from the outside of the duct body, and a through hole that allows ventilation from the outside of the duct body to the opening An air intake for a vehicle in which the porous material is sandwiched and supported by the cover and the installation portion by being attached to the installation portion so as to cover the porous material disposed in the installation portion When the partition wall portion protrudes toward the cover and is formed in an annular shape surrounding the opening, and the cover is attached to the installation portion so as to cover the porous material disposed in the installation portion. , The peripheral edge of the cover Ultrasonic welding or the vehicle air intake duct, characterized in that it is adhesively bonded by either adhesive attached at either the vibration welding or heat welding to the part.
A duct body formed in a hollow rectangular tube shape, an installation part provided on the outer surface of the flat part constituting the peripheral wall part of the duct body, and an opening formed in the installation part so as to penetrate inside and outside of the duct body And a cover having a porous material disposed in the installation portion so as to cover the opening from the outside of the duct main body, and a through hole portion that allows ventilation from the outside of the duct main body to the opening. Is a vehicle air intake duct that is supported by being sandwiched between the cover and the installation part by being attached to the installation part so as to cover the porous material disposed in the installation part. When the partition wall portion protrudes toward the cover and is formed in an annular shape surrounding the opening, and the cover is attached to the installation portion so as to cover the porous material disposed in the installation portion, the peripheral edge portion of the cover becomes the partition wall portion. Ultrasonic welding or vibration welding or heat welding Vehicle air intake duct, characterized in that it is adhesively bonded by either adhesive attached at either.