JP6924403B2 - Connection structure of flow path forming member - Google Patents

Connection structure of flow path forming member Download PDF

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Publication number
JP6924403B2
JP6924403B2 JP2017108387A JP2017108387A JP6924403B2 JP 6924403 B2 JP6924403 B2 JP 6924403B2 JP 2017108387 A JP2017108387 A JP 2017108387A JP 2017108387 A JP2017108387 A JP 2017108387A JP 6924403 B2 JP6924403 B2 JP 6924403B2
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flow path
duct
forming member
path forming
connecting portion
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JP2018204647A (en
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重樹 加茂
重樹 加茂
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Isuzu Motors Ltd
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Isuzu Motors Ltd
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Priority to JP2017108387A priority Critical patent/JP6924403B2/en
Priority to CN201880035334.9A priority patent/CN110678687A/en
Priority to PCT/JP2018/020645 priority patent/WO2018221548A1/en
Publication of JP2018204647A publication Critical patent/JP2018204647A/en
Priority to PH12019502657A priority patent/PH12019502657A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/02—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/24—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with parts screwed directly on or into the hose

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Springs (AREA)
  • Compressor (AREA)
  • Chairs Characterized By Structure (AREA)

Description

本発明は、流路形成部材の接続構造に関する。 The present invention relates to a connection structure of a flow path forming member.

特許文献１には、キャブの後壁に固定される吸気ダクトとしてのシュノーケルと、同シュノーケルの下部に一体結合されるゴム製の蛇腹状の上弾性筒体とを備えるキャブオーバー型車両の吸気ダクトが記載されている。上弾性筒体は、その上端部がシュノーケルの下縁部にベルトで締付固定される。また、上弾性筒体の上端部の内周面がシュノーケルの下縁部の外周面に下方から嵌合している構造が図示されている。 Patent Document 1 describes an intake duct of a cab-over type vehicle including a snorkel as an intake duct fixed to the rear wall of the cab and a rubber bellows-shaped upper elastic cylinder integrally connected to the lower part of the snorkel. Is described. The upper end of the upper elastic cylinder is fastened and fixed to the lower edge of the snorkel with a belt. Further, a structure is shown in which the inner peripheral surface of the upper end portion of the upper elastic cylinder is fitted to the outer peripheral surface of the lower edge portion of the snorkel from below.

特開平０９−１４４６１５号公報Japanese Unexamined Patent Publication No. 09-144615

しかし、特許文献１に記載の構造では、上弾性筒体（第２流路形成部材）の上端部の内周面がシュノーケル（第１流路形成部材）の下縁部の外周面に下方から嵌合しているので、第１流路形成部材の外周面に沿って流下した水が第１流路形成部材の外周面と第２流路形成部材の内周面との間から第２流路形成部材内へ侵入する可能性がある。 However, in the structure described in Patent Document 1, the inner peripheral surface of the upper end portion of the upper elastic cylinder (second flow path forming member) is on the outer peripheral surface of the lower edge portion of the snorkel (first flow path forming member) from below. Since they are fitted, the water flowing down along the outer peripheral surface of the first flow path forming member flows from between the outer peripheral surface of the first flow path forming member and the inner peripheral surface of the second flow path forming member to the second flow. There is a possibility of invading the path forming member.

そこで、本発明は、水の浸入を防止することが可能な流路形成部材の接続構造の提供を目的とする。 Therefore, an object of the present invention is to provide a connection structure of a flow path forming member capable of preventing the ingress of water.

上記目的を達成すべく、流路形成部材の接続構造は、第１流路形成部材と第２流路形成部材とを備える。第１流路形成部材は、下方へ開口する筒形状の第１接続部を有する。第２流路形成部材は、第１接続部の内側に下方から嵌入可能な弾性筒形状の第２接続部と、第２接続部の内側中央を囲むように第２接続部の内周面上で互いに離間する少なくとも３箇所の被押圧部から第２接続部の内側へ延びる複数の弾性支持部とを一体的に有する。 In order to achieve the above object, the connection structure of the flow path forming member includes a first flow path forming member and a second flow path forming member. The first flow path forming member has a tubular first connecting portion that opens downward. The second flow path forming member is on the inner peripheral surface of the second connecting portion so as to surround the inner center of the second connecting portion and the elastic tubular second connecting portion that can be fitted into the inside of the first connecting portion from below. It integrally has a plurality of elastic support portions extending inward of the second connecting portion from at least three pressed portions separated from each other.

複数の弾性支持部は、板状であり、第２接続部が第１接続部の内側に嵌入されて径方向内側へ押圧されることにより弾性変形し、被押圧部を介して第２接続部を第１接続部の内周面に押し付ける。 The plurality of elastic support portions have a plate shape, and the second connecting portion is fitted inside the first connecting portion and is elastically deformed by being pressed inward in the radial direction, and the second connecting portion is elastically deformed via the pressed portion. Is pressed against the inner peripheral surface of the first connection portion.

なお、弾性支持部の数、配置、個々の形状及び材質は、第１接続部に第２接続部を嵌入することができ、被押圧部を介して第２接続部が第１接続部の内周面に押し付けられることによって第２流路形成部材が第１流路形成部材から抜け難く、且つ流路形成部材が形成する流路を流通する空気等の流通を阻害し難いように設定することが好ましい。 Regarding the number, arrangement, individual shapes and materials of the elastic support portions, the second connection portion can be fitted into the first connection portion, and the second connection portion is included in the first connection portion via the pressed portion. It is set so that the second flow path forming member is hard to come out from the first flow path forming member by being pressed against the peripheral surface, and it is hard to obstruct the flow of air or the like flowing through the flow path formed by the flow path forming member. Is preferable.

上記構成では、第１流路形成部材の第１接続部の内側に第２流路形成部材の第２接続部が下方から嵌入することによって、第１流路形成部材と第２流路形成部材とが接続している。このため、上方に配置される第１流路形成部材の下端部が第２流路形成部材の上端部を径方向外側から覆っている。従って、上方から第１流路形成部材の外周面を沿って流下する水の内部への浸入を防止することができる。 In the above configuration, the first flow path forming member and the second flow path forming member are formed by fitting the second connecting part of the second flow path forming member into the inside of the first connecting part of the first flow path forming member from below. Is connected. Therefore, the lower end portion of the first flow path forming member arranged above covers the upper end portion of the second flow path forming member from the outside in the radial direction. Therefore, it is possible to prevent the water flowing down from above along the outer peripheral surface of the first flow path forming member from entering the inside.

また、第２接続部の内側中央を囲むように第２接続部の内周面上で互いに離間する少なくとも３箇所の被押圧部から第２接続部の内側へ延びる複数の弾性支持部が、第２接続部が第１接続部の内側に嵌入されて径方向内側へ押圧されることにより弾性変形し、被押圧部を介して第２接続部を第１接続部の内周面に押し付けている。このため、第２流路形成部材の第１流路形成部材からの抜けを防止することができる。 Further, a plurality of elastic support portions extending inward of the second connecting portion from at least three pressed portions separated from each other on the inner peripheral surface of the second connecting portion so as to surround the inner center of the second connecting portion are formed . 2 The connecting portion is fitted inside the first connecting portion and is elastically deformed by being pressed inward in the radial direction, and the second connecting portion is pressed against the inner peripheral surface of the first connecting portion via the pressed portion. .. Therefore, it is possible to prevent the second flow path forming member from coming off from the first flow path forming member.

また、第２流路形成部材の上端部の外周面には、径方向外側へ突出する突出部が形成されてもよい。第１流路形成部材の内周面には、第１流路形成部材と第２流路形成部材とが接続された部材接続状態で、突出部が係合する係合溝が形成される。 Further, a protruding portion protruding outward in the radial direction may be formed on the outer peripheral surface of the upper end portion of the second flow path forming member. On the inner peripheral surface of the first flow path forming member, an engaging groove is formed in which the protrusion is engaged in a member connected state in which the first flow path forming member and the second flow path forming member are connected.

上記構成では、部材接続状態で、第１流路形成部材の内周面に形成される係合溝に、第２流路形成部材の上端部の外周面から径方向外側へ突出する突出部が係合している。このため、第２流路形成部材の第１流路形成部材からの抜けをより確実に防止することができる。 In the above configuration, in the engaging groove formed on the inner peripheral surface of the first flow path forming member in the member connected state, a protruding portion protruding outward in the radial direction from the outer peripheral surface of the upper end portion of the second flow path forming member is formed. Engaged. Therefore, it is possible to more reliably prevent the second flow path forming member from coming off from the first flow path forming member.

本発明によれば、水の浸入を防止することができる。 According to the present invention, it is possible to prevent the ingress of water.

本発明の実施形態に係る流路形成部材の接続構造を有する車両を示す斜視図である。It is a perspective view which shows the vehicle which has the connection structure of the flow path forming member which concerns on embodiment of this invention. 吸気配管を前方から視た正面図である。It is a front view which looked at the intake pipe from the front. 吸気配管を車幅方向外側から視た側面図である。It is a side view which looked at the intake pipe from the outside in the vehicle width direction. 吸気配管の要部拡大図である。It is an enlarged view of the main part of an intake pipe. 図４のＶ−Ｖ矢視断面図である。It is a cross-sectional view taken along the line VV of FIG. 蛇腹状ダクトを上方から視た平面図である。It is a top view of the bellows-shaped duct as viewed from above. 蛇腹状ダクトの変形例を示す平面図である。It is a top view which shows the modification of the bellows-shaped duct. 他の蛇腹状ダクトの変形例を示す平面図である。It is a top view which shows the modification of another bellows-shaped duct.

以下、本発明の実施形態について図面を参照して詳細に説明する。なお、各図において、ＦＲは車両の前方を、ＵＰは上方を、ＩＮは車幅方向内側をそれぞれ示す。また、以下の説明において、左右方向は車両前方を向いた状態での左右方向を意味する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Further, in the following description, the left-right direction means the left-right direction in a state of facing the front of the vehicle.

図１に示すように、本実施形態に係る流路形成部材の接続構造は、吸入した空気をエアクリーナ４まで流通させる吸気配管（流路形成部材）３の接続に適用される。吸気配管３を備える車両１は、トレーラ（図示省略）を牽引するトラクタ１であり、トラクタ１の前後に亘って延びる左右１対のサイドメンバ（図示省略）の前部の上方にキャブ２が配置される。キャブ２は、キャブ２の前端側がシャシ側に対しチルト軸（図示省略）を中心としてチルト可能に支持される。非チルト状態において、キャブ２は、複数のキャブマウント（図示省略）を介してサイドメンバに下方から支持される。キャブ２の下方の車幅方向中央部には、エンジン（図示省略）が配置される。サイドメンバの後部の上方には、トレーラをトラクタ１に連結するための連結装置であるカプラ５が配置される。吸気配管３は、エンジンへの吸気が流通するダクトであり、キャブ２の後面２ａの車幅方向右側の外端部の後方に配置され、キャブ２の後面２ａに沿って上下方向に延びた状態でキャブ２の後面２ａに固定され、バーチカルダクト（第１流路形成部材）６と蛇腹状ダクト（第２流路形成部材）７とを備える。 As shown in FIG. 1, the connection structure of the flow path forming member according to the present embodiment is applied to the connection of the intake pipe (flow path forming member) 3 that circulates the sucked air to the air cleaner 4. The vehicle 1 provided with the intake pipe 3 is a tractor 1 that pulls a trailer (not shown), and the cab 2 is arranged above the front part of a pair of left and right side members (not shown) extending in front of and behind the tractor 1. Will be done. The cab 2 is supported so that the front end side of the cab 2 can be tilted with respect to the chassis side about a tilt axis (not shown). In the non-tilted state, the cab 2 is supported from below by the side members via a plurality of cab mounts (not shown). An engine (not shown) is arranged below the cab 2 at the center in the vehicle width direction. Above the rear portion of the side member, a coupler 5 which is a connecting device for connecting the trailer to the tractor 1 is arranged. The intake pipe 3 is a duct through which intake air to the engine flows, is arranged behind the outer end portion on the right side of the rear surface 2a of the cab 2 in the vehicle width direction, and extends in the vertical direction along the rear surface 2a of the cab 2. It is fixed to the rear surface 2a of the cab 2 and includes a vertical duct (first flow path forming member) 6 and a bellows-shaped duct (second flow path forming member) 7.

図２〜図３に示すように、バーチカルダクト６は、樹脂製のダクトであって、上方の外側吸気口２０及び後方吸気口２１から下端の下端開口２３まで連続して延びる内部流路（後述する上端部流路１５、中間部流路１６、及び下端部流路１７）を区画するダクト本体部１０と、ダクト本体部１０に対してリブ３３によって仕切られるレゾネータ部１１とを一体的に備える。バーチカルダクト６は、キャブ２の後方に大きく突出しないように前後方向の厚さが薄く形成される。 As shown in FIGS. 2 to 3, the vertical duct 6 is a resin duct, and is an internal flow path (described later) that continuously extends from the upper outer intake port 20 and the rear intake port 21 to the lower end opening 23 at the lower end. The duct main body 10 for partitioning the upper end flow path 15, the intermediate flow path 16, and the lower end flow path 17) and the resonator portion 11 partitioned by the rib 33 from the duct main body 10 are integrally provided. .. The vertical duct 6 is formed to be thin in the front-rear direction so as not to protrude significantly behind the cab 2.

ダクト本体部１０は、ダクト上端部１２とダクト中間部１３とダクト下端部１４とを有する。ダクト上端部１２は、車幅方向外側へ向かって開口する外側吸気口２０と後方へ向かって開口する後方吸気口２１とを有し、外側吸気口２０及び後方吸気口２１から車幅方向内へ延びて、内部に上端部流路１５を区画する。ダクト中間部１３は、車幅方向外側の上部にダクト上端部１２と連通する上端開口（図示省略）を有し、上下方向に延びて、ダクト上端部１２の上端部流路１５からの吸気を下方へ案内する中間流路１６を内部に区画する。ダクト下端部１４は、ダクト中間部１３の下端から下方へ延びるダクト環状部１８と、下方に開口する下端開口２３が設けられるダクト接続部（第１接続部）１９とを有し、ダクト中間部１３の中間流路１６からの吸気を下端開口２３へ案内する下端部流路１７を内部に区画する。バーチカルダクト６のダクト中間部１３及びダクト接続部１９は、後述する蛇腹状ダクト７の上端接続部（第２接続部）３４の長円形状より若干大きな長円形状である。ダクト接続部１９の内周面には、バーチカルダクト６に蛇腹状ダクト７が接続されたダクト接続状態で、後述する蛇腹状ダクト７の上端接続部３４のフランジ部（突出部）４０が係合するフランジ係合溝（係合溝）２６が形成される。ダクト接続部１９の下端部の外周面には、下方へ向かって径方向外側へ傾斜する逆テーパ状の傾斜面２７が形成される。下端開口２３には、キャブ２の下方のエアクリーナ４へ連続する蛇腹状ダクト７が連続される。 The duct main body portion 10 has a duct upper end portion 12, a duct intermediate portion 13, and a duct lower end portion 14. The upper end portion 12 of the duct has an outer intake port 20 that opens outward in the vehicle width direction and a rear intake port 21 that opens rearward, and the outside intake port 20 and the rear intake port 21 enter the vehicle width direction. It extends to partition the upper end flow path 15 inside. The duct intermediate portion 13 has an upper end opening (not shown) communicating with the duct upper end portion 12 at the upper portion on the outer side in the vehicle width direction, extends in the vertical direction, and takes in air from the upper end passage 15 of the duct upper end portion 12. The intermediate flow path 16 that guides downward is partitioned inside. The duct lower end portion 14 has a duct annular portion 18 extending downward from the lower end of the duct intermediate portion 13, and a duct connecting portion (first connecting portion) 19 provided with a lower end opening 23 that opens downward, and is a duct intermediate portion. The lower end flow path 17 that guides the intake air from the intermediate flow path 16 of 13 to the lower end opening 23 is internally partitioned. The duct intermediate portion 13 and the duct connecting portion 19 of the vertical duct 6 have an oval shape slightly larger than the oval shape of the upper end connecting portion (second connecting portion) 34 of the bellows-shaped duct 7, which will be described later. The flange portion (protruding portion) 40 of the upper end connecting portion 34 of the bellows-shaped duct 7, which will be described later, is engaged with the inner peripheral surface of the duct connecting portion 19 in a duct-connected state in which the bellows-shaped duct 7 is connected to the vertical duct 6. A flange engagement groove (engagement groove) 26 is formed. On the outer peripheral surface of the lower end portion of the duct connecting portion 19, a reverse tapered inclined surface 27 that inclines downward in the radial direction is formed. A bellows-shaped duct 7 continuous with the air cleaner 4 below the cab 2 is connected to the lower end opening 23.

レゾネータ部１１は、内部にレゾネータ空間（図示省略）が区画されて、内部開口３２以外が密閉された容器状に形成される。レゾネータ部１１は、ダクト本体部１０のダクト中間部１３の車幅方向外側、且つダクト上端部１２の下方に配置される。ダクト中間部１３の中間部流路１６とレゾネータ部１１のレゾネータ空間とは、車幅方向と交叉して延びるリブ３３によって仕切られ、リブ３３に形成される内部開口３２で連通する。レゾネータ部１１は、バーチカルダクト６に吸気が流通する際の吸気音の音圧を共鳴作用によって低減する。 The resonator portion 11 is formed in a container shape in which a resonator space (not shown) is partitioned inside and the openings other than the internal opening 32 are sealed. The resonator portion 11 is arranged outside the duct intermediate portion 13 of the duct main body portion 10 in the vehicle width direction and below the duct upper end portion 12. The intermediate flow path 16 of the duct intermediate portion 13 and the resonator space of the resonator portion 11 are separated by a rib 33 extending in the vehicle width direction, and communicate with each other by an internal opening 32 formed in the rib 33. The resonator section 11 reduces the sound pressure of the intake sound when the intake air flows through the vertical duct 6 by a resonance action.

外側吸気口２０及び後方吸気口２１から吸入された吸気は、ダクト上端部１２の上端部流路１５、ダクト中間部１３の中間部流路１６及びダクト下端部１４の下端部流路１７を流通して蛇腹状ダクト７側へ案内される。 The intake air sucked from the outer intake port 20 and the rear intake port 21 flows through the upper end flow path 15 of the duct upper end portion 12, the middle portion flow path 16 of the duct intermediate portion 13, and the lower end flow path 17 of the duct lower end portion 14. Then, it is guided to the bellows-shaped duct 7 side.

図４〜図６に示すように、蛇腹状ダクト７は、上方へ開口する上端開口３７が形成される長円筒形状の上端接続部３４と、下方へ開口する下端開口（図示省略）が形成される長円筒形状の下端接続部３５と、上端接続部３４と下端接続部３５との間に配置される蛇腹状の蛇腹部３６とを有し、上下方向に延びて内側に吸気が流通する蛇腹状ダクト管路３９が区画される。蛇腹状ダクト７は、可撓性を有する樹脂製又はゴム製である。上端接続部３４は、相対向する前後１対の直線状部４２と、前後の直線状部４２の一端同士及び他端同士を接続する左右１対の湾曲線状部４３とを有する長円状である。なお、蛇腹状ダクト７の上端接続部３４が相対向する前後１対の直線状部４２と、前後の直線状部４２の一端同士及び他端同士を接続する左右１対の湾曲線状部４３とを有する長円状である構造を例示したが、これに限定されるものではなく、例えば、円状であってもよい。 As shown in FIGS. 4 to 6, the bellows-shaped duct 7 is formed with an elongated cylindrical upper end connecting portion 34 having an upper end opening 37 that opens upward and a lower end opening (not shown) that opens downward. It has a long cylindrical lower end connecting portion 35 and a bellows-shaped bellows portion 36 arranged between the upper end connecting portion 34 and the lower end connecting portion 35, and extends in the vertical direction to allow intake air to flow inward. The shape duct pipeline 39 is partitioned. The bellows-shaped duct 7 is made of flexible resin or rubber. The upper end connecting portion 34 has an oval shape having a pair of front and rear linear portions 42 facing each other and a pair of left and right curved linear portions 43 connecting one ends and the other ends of the front and rear linear portions 42. Is. A pair of front and rear linear portions 42 with the upper end connecting portions 34 of the bellows-shaped duct 7 facing each other, and a pair of left and right curved linear portions 43 connecting one ends and the other ends of the front and rear linear portions 42. Although an elliptical structure having the above is illustrated, the structure is not limited to this, and may be circular, for example.

上端接続部３４は、バーチカルダクト６のダクト接続部１９の下端開口２３に挿入されて接続される。下端接続部３５の下端開口は、非チルト状態ではシャシ側のエアクリーナ４と連通し、車室外の空気がバーチカルダクト６を介してエアクリーナ４によって吸引され、チルト状態ではエアクリーナ４側から離脱する。上端接続部３４の内側には、弾性支持部４５が上端接続部３４と一体的に設けられる。上端接続部３４の上端部の外周面には、径方向外側へ突出し、ダクト接続状態でダクト接続部１９のフランジ係合溝２６と係合するフランジ部４０が形成される。蛇腹部３６の上端部の外周面には、径方向外側へ突出し、ダクト接続状態でバーチカルダクト６のダクト接続部１９の下端面と当接する上面を有するストッパ部４１が形成される。 The upper end connecting portion 34 is inserted into and connected to the lower end opening 23 of the duct connecting portion 19 of the vertical duct 6. The lower end opening of the lower end connecting portion 35 communicates with the air cleaner 4 on the chassis side in the non-tilted state, the air outside the vehicle interior is sucked by the air cleaner 4 through the vertical duct 6, and is separated from the air cleaner 4 side in the tilted state. An elastic support portion 45 is provided integrally with the upper end connecting portion 34 inside the upper end connecting portion 34. A flange portion 40 is formed on the outer peripheral surface of the upper end portion of the upper end connecting portion 34 so as to project outward in the radial direction and engage with the flange engaging groove 26 of the duct connecting portion 19 in the duct connected state. On the outer peripheral surface of the upper end portion of the bellows portion 36, a stopper portion 41 having an upper surface that protrudes outward in the radial direction and comes into contact with the lower end surface of the duct connection portion 19 of the vertical duct 6 in the duct connected state is formed.

上端接続部３４の内周面上には、上端接続部３４の内側中央３４ａを囲むように上端接続部３４の内周面上で互いに離間する８箇所の被押圧部４４が設けられ、８箇所の被押圧部４４から４本の弾性支持部４５が車幅方向に沿って延びる。被押圧部４４は、左右の湾曲線状部４３の内周面の前後方向中央にそれぞれ設けられる２箇所の左右被押圧部４６と、前後の直線状部４２の内周面の両端部及び車幅方向中央部にそれぞれ設けられる６箇所の前後被押圧部４７とを有する。弾性支持部４５は、左右被押圧部４６から車幅方向に沿って延びる１本の車幅方向弾性支持部４８と、前後被押圧部４７から前後方向に沿って延びる３本の前後方向弾性支持部４９とを有する。弾性支持部４５は、１本の車幅方向弾性支持部４８と３本の前後方向弾性支持部４９とによって格子状に形成される。なお、被押圧部４４が、左右の湾曲線状部４３の内周面の前後方向中央にそれぞれ設けられる２箇所の左右被押圧部４６と、前後の直線状部４２の内周面の両端部及び車幅方向中央部にそれぞれ設けられる６箇所の前後被押圧部４７とを有する構造が例示されているが、これに限定されることなく、上端接続部３４の内周面上に少なくとも３箇所の被押圧部が上端接続部３４の内側中央３４ａを囲むように互いに離間して設けられればよい。また、左右被押圧部４６から車幅方向に沿って延びる１本の車幅方向弾性支持部４８と、前後被押圧部４７から前後方向に沿って延びる３本の前後方向弾性支持部４９とによって、弾性支持部４５が格子状に形成される構造が例示されているが、これに限定されることなく、上端接続部３４の内側中央３４ａを囲むように互いに離間して設けられる少なくとも３箇所の被押圧部４４から上端接続部３４の内側へ弾性支持部４５が延びればよい。例えば、図７に示すように、上端接続部３４の内側中央３４ａを囲むように上端接続部３４の内周面上で互いに離間する１２箇所の被押圧部５０が設けられ、上端接続部３４の内側中央３４ａから１２箇所の被押圧部５０へ１２本の弾性支持部５１が放射状に延びる構造であってもよい。また、図８の（ａ）に示すように、上端接続部３４の内側中央３４ａを囲むように上端接続部３４の内周面上で互いに離間する３箇所の被押圧部５２へ、円筒状の上端接続部３４の内側中央３４ａから放射状に延びる３本の弾性支持部５３が略Ｙ字状に設けられる構造や、図８の（ｂ）に示すように、上端接続部３４の内側中央３４ａを囲むように上端接続部３４の内周面上で互いに離間する３箇所の被押圧部５４を互いに繋ぐ３本の弾性支持部５５が略三角形状に設けられる構造であってもよい。 On the inner peripheral surface of the upper end connecting portion 34, eight pressed portions 44 are provided on the inner peripheral surface of the upper end connecting portion 34 so as to surround the inner center 34a of the upper end connecting portion 34, and eight pressed portions 44 are provided. Four elastic support portions 45 extend from the pressed portion 44 of the vehicle along the vehicle width direction. The pressed portion 44 includes two left and right pressed portions 46 provided at the center of the inner peripheral surface of the left and right curved linear portions 43 in the front-rear direction, both ends of the inner peripheral surface of the front and rear linear portions 42, and a vehicle. It has six front and rear pressed portions 47, which are provided in the central portion in the width direction. The elastic support portion 45 includes one vehicle width direction elastic support portion 48 extending from the left and right pressed portions 46 along the vehicle width direction, and three front-rear direction elastic supports extending from the front-rear pressed portion 47 along the front-rear direction. It has a part 49 and. The elastic support portion 45 is formed in a grid pattern by one vehicle width direction elastic support portion 48 and three front-rear direction elastic support portions 49. It should be noted that the pressed portions 44 are provided at two left and right pressed portions 46 provided at the center of the inner peripheral surface of the left and right curved linear portions 43 in the front-rear direction, and both ends of the inner peripheral surface of the front and rear linear portions 42. An example is a structure having six front and rear pressed portions 47 provided in the central portion in the vehicle width direction, but the structure is not limited to this, and at least three locations are provided on the inner peripheral surface of the upper end connecting portion 34. The pressed portions may be provided apart from each other so as to surround the inner center 34a of the upper end connecting portion 34. Further, one vehicle width direction elastic support portion 48 extending from the left and right pressed portions 46 along the vehicle width direction, and three front-rear direction elastic support portions 49 extending from the front-rear pressed portion 47 along the front-rear direction Although the structure in which the elastic support portions 45 are formed in a grid pattern is exemplified, the structure is not limited to this, and at least three locations provided apart from each other so as to surround the inner center 34a of the upper end connecting portion 34. The elastic support portion 45 may extend from the pressed portion 44 to the inside of the upper end connecting portion 34. For example, as shown in FIG. 7, 12 pressed portions 50 separated from each other on the inner peripheral surface of the upper end connecting portion 34 are provided so as to surround the inner center 34a of the upper end connecting portion 34, and the upper end connecting portion 34 The structure may be such that 12 elastic support portions 51 extend radially from the inner center 34a to the 12 pressed portions 50. Further, as shown in FIG. 8A, the three pressed portions 52 separated from each other on the inner peripheral surface of the upper end connecting portion 34 so as to surround the inner center 34a of the upper end connecting portion 34 are cylindrical. A structure in which three elastic support portions 53 extending radially from the inner center 34a of the upper end connecting portion 34 are provided in a substantially Y shape, and as shown in FIG. 8B, the inner center 34a of the upper end connecting portion 34 is provided. The structure may be such that three elastic support portions 55 connecting the three pressed portions 54 separated from each other on the inner peripheral surface of the upper end connecting portion 34 so as to surround the upper end connecting portions 34 are provided in a substantially triangular shape.

上端接続部３４の車幅方向の外径（上端接続部３４の車幅方向左側の外周面から対向する上端接続部３４の車幅方向右側の外周面までの距離）は、バーチカルダクト６のダクト接続部１９の車幅方向の内径（ダクト接続部１９の車幅方向左側の内周面から対向するダクト接続部１９の車幅方向右側の内周面までの距離）よりも若干小さく設定されており、上端接続部３４の前後方向の外径（上端接続部３４の前方の外周面から対向する上端接続部３４の後方の外周面までの距離）は、バーチカルダクト６のダクト接続部１９の前後方向の内径（ダクト接続部１９の前方の内周面から対向するダクト接続部１９の後方の内周面までの距離）よりも若干小さく設定されている。 The outer diameter of the upper end connecting portion 34 in the vehicle width direction (distance from the outer peripheral surface on the left side of the upper end connecting portion 34 in the vehicle width direction to the outer peripheral surface on the right side of the upper end connecting portion 34 in the vehicle width direction) is the duct of the vertical duct 6. It is set slightly smaller than the inner diameter of the connecting portion 19 in the vehicle width direction (distance from the inner peripheral surface of the duct connecting portion 19 on the left side in the vehicle width direction to the inner peripheral surface of the opposing duct connecting portion 19 in the vehicle width direction). The outer diameter of the upper end connecting portion 34 in the front-rear direction (distance from the outer peripheral surface in front of the upper end connecting portion 34 to the outer peripheral surface behind the upper end connecting portion 34 facing the upper end connecting portion 34) is the front and rear of the duct connecting portion 19 of the vertical duct 6. It is set to be slightly smaller than the inner diameter in the direction (distance from the inner peripheral surface in front of the duct connecting portion 19 to the inner peripheral surface behind the opposing duct connecting portion 19).

次に、蛇腹状ダクト７をバーチカルダクト６に接続する際の作業について説明する。 Next, the work when connecting the bellows-shaped duct 7 to the vertical duct 6 will be described.

蛇腹状ダクト７をバーチカルダクト６に接続する際には、蛇腹状ダクト７の上端接続部３４をバーチカルダクト６のダクト接続部１９に嵌入する。蛇腹状ダクト７は、バーチカルダクト６のダクト接続部１９の下端面が蛇腹状ダクト７のストッパ部４１の上面に当接するまで嵌入される。上端接続部３４がダクト接続部１９の内側に嵌入されて径方向内側へ押圧されることによって、弾性支持部４５が弾性変形する。弾性変形した弾性支持部４５は、被押圧部４４を介して上端接続部３４をダクト接続部１９の内周面に押し付け、蛇腹状ダクト７とバーチカルダクト６とが嵌合状態となる。蛇腹状ダクト７がバーチカルダクト６に接続されたダクト接続状態では、バーチカルダクト６の内周面に形成されるフランジ係合溝２６には蛇腹状ダクト７のフランジ部４０が係合する。バーチカルダクト６に対する蛇腹状ダクト７の上下方向の移動は、フランジ係合溝２６にフランジ部４０が係合及びダクト接続部１９の下端面とストッパ部４１の上面との当接によって規制される。 When connecting the bellows-shaped duct 7 to the vertical duct 6, the upper end connecting portion 34 of the bellows-shaped duct 7 is fitted into the duct connecting portion 19 of the vertical duct 6. The bellows-shaped duct 7 is fitted until the lower end surface of the duct connecting portion 19 of the vertical duct 6 comes into contact with the upper surface of the stopper portion 41 of the bellows-shaped duct 7. The elastic support portion 45 is elastically deformed by the upper end connecting portion 34 being fitted inside the duct connecting portion 19 and being pressed inward in the radial direction. The elastically deformed elastic support portion 45 presses the upper end connecting portion 34 against the inner peripheral surface of the duct connecting portion 19 via the pressed portion 44, and the bellows-shaped duct 7 and the vertical duct 6 are in a fitted state. In the duct connection state in which the bellows-shaped duct 7 is connected to the vertical duct 6, the flange portion 40 of the bellows-shaped duct 7 engages with the flange engaging groove 26 formed on the inner peripheral surface of the vertical duct 6. The vertical movement of the bellows-shaped duct 7 with respect to the vertical duct 6 is regulated by the engagement of the flange portion 40 with the flange engaging groove 26 and the contact between the lower end surface of the duct connecting portion 19 and the upper surface of the stopper portion 41.

上記構造では、バーチカルダクト６のダクト接続部１９の内側に蛇腹状ダクト７の上端接続部３４が下方から嵌入することによって、バーチカルダクト６と蛇腹状ダクト７とが接続している。このため、上方に配置されるバーチカルダクト６の下端部が蛇腹状ダクト７の上端部を径方向外側から覆っている。従って、上方からバーチカルダクト６の外周面を沿って流下する水の内部への浸入を防止することができる。 In the above structure, the vertical duct 6 and the bellows-shaped duct 7 are connected by fitting the upper end connecting portion 34 of the bellows-shaped duct 7 into the inside of the duct connecting portion 19 of the vertical duct 6 from below. Therefore, the lower end of the vertical duct 6 arranged above covers the upper end of the bellows-shaped duct 7 from the outside in the radial direction. Therefore, it is possible to prevent the intrusion of water flowing down along the outer peripheral surface of the vertical duct 6 from above into the inside.

また、上端接続部３４には、上端接続部３４の内側中央３４ａを囲むように上端接続部３４の内周面上で互いに離間する被押圧部４４が８箇所設けられ、８箇所の被押圧部４４から４本の弾性支持部４５が上端接続部３４の内側へ延びる。４本の弾性支持部４５は、上端接続部３４がダクト接続部１９の内側に嵌入されて径方向内側へ押圧されることにより弾性変形し、被押圧部４４を介して上端接続部３４をダクト接続部１９の内周面に押し付けている。このため、蛇腹状ダクト７のバーチカルダクト６からの抜けを防止することができる。 Further, the upper end connecting portion 34 is provided with eight pressed portions 44 separated from each other on the inner peripheral surface of the upper end connecting portion 34 so as to surround the inner center 34a of the upper end connecting portion 34, and the eight pressed portions are provided. From 44, four elastic support portions 45 extend inward of the upper end connecting portion 34. The four elastic support portions 45 are elastically deformed when the upper end connecting portion 34 is fitted inside the duct connecting portion 19 and pressed inward in the radial direction, and the upper end connecting portion 34 is ducted via the pressed portion 44. It is pressed against the inner peripheral surface of the connecting portion 19. Therefore, it is possible to prevent the bellows-shaped duct 7 from coming off from the vertical duct 6.

また、蛇腹状ダクト７がバーチカルダクト６に接続されたダクト接続状態で、バーチカルダクト６の内周面に形成されるフランジ係合溝２６に、蛇腹状ダクト７の上端接続部３４の上端部の外周面から径方向外側へ突出するフランジ部４０が係合している。このため、蛇腹状ダクト７のバーチカルダクト６からの抜けをより確実に防止することができる。 Further, in the duct connected state in which the bellows-shaped duct 7 is connected to the vertical duct 6, the flange engaging groove 26 formed on the inner peripheral surface of the vertical duct 6 is fitted with the upper end portion of the upper end connecting portion 34 of the bellows-shaped duct 7. The flange portion 40 protruding outward in the radial direction from the outer peripheral surface is engaged. Therefore, it is possible to more reliably prevent the bellows-shaped duct 7 from coming off from the vertical duct 6.

なお、本実施形態では、蛇腹状ダクト７の上端接続部３４と下端接続部３５との間に蛇腹状の蛇腹部３６が設けられる構造が例示されているが、これに限定されるものではなく、長円筒状の筒状部が設けられてもよい。 In the present embodiment, a structure in which a bellows-shaped bellows portion 36 is provided between the upper end connecting portion 34 and the lower end connecting portion 35 of the bellows-shaped duct 7 is exemplified, but the present invention is not limited to this. , A long cylindrical tubular portion may be provided.

また、弾性支持部４５が上端接続部３４に一体的に設けられる構造を例示したが、これに限定されるものではなく、弾性支持部を別体として、上端接続部３４の内側に設けてもよい。 Further, the structure in which the elastic support portion 45 is integrally provided on the upper end connection portion 34 has been illustrated, but the present invention is not limited to this, and the elastic support portion may be provided inside the upper end connection portion 34 as a separate body. good.

また、本実施形態では、流路形成部材の接続構造は、外側吸気口２０及び後方吸気口２１から吸引した空気をエアクリーナ４へと流通する吸気配管３の接続に適用されるが、これに限定されるものではない。例えば、排気配管の接続に用いられてもよい。 Further, in the present embodiment, the connection structure of the flow path forming member is applied to the connection of the intake pipe 3 that circulates the air sucked from the outer intake port 20 and the rear intake port 21 to the air cleaner 4, but is limited to this. It is not something that is done. For example, it may be used for connecting an exhaust pipe.

以上、本発明について、上記実施形態に基づいて説明を行ったが、本発明は上記実施形態の内容に限定されるものではなく、当然に本発明を逸脱しない範囲で適宜変更が可能である。すなわち、この実施形態に基づいて当業者等によりなされる他の実施形態、実施例および運用技術等は全て本発明の範疇に含まれることは勿論である。 Although the present invention has been described above based on the above-described embodiment, the present invention is not limited to the contents of the above-described embodiment, and can be appropriately modified without departing from the present invention. That is, it goes without saying that all other embodiments, examples, operational techniques, and the like made by those skilled in the art based on this embodiment are included in the category of the present invention.

本発明の流路形成部材の接続構造は、トラックその他の車両に広く利用することができる。 The connection structure of the flow path forming member of the present invention can be widely used for trucks and other vehicles.

１ 車両
２ キャブ
２ａ キャブ後面
３ 吸気配管（流路形成部材）
４ エアクリーナ
６ バーチカルダクト（第１流路形成部材）
７ 蛇腹状ダクト（第２流路形成部材）
１０ ダクト本体部
１１ レゾネータ部
１２ ダクト上端部
１３ ダクト中間部
１４ ダクト下端部
１８ ダクト環状部
１９ ダクト接続部（第１接続部）
２０ 外側吸気口
２１ 後方吸気口
２３ 下端開口
２６ フランジ係合溝（係合溝）
３４ 上端接続部（第２接続部）
３４ａ 内側中央
３５ 下端接続部
３６ 蛇腹部
３７ 上端開口
４０ フランジ部（突出部）
４２ 直線状部
４３ 湾曲線状部
４４，５０，５２，５４ 被押圧部
４５，５１，５３，５５ 弾性支持部


1 Vehicle 2 Cab 2a Rear surface of cab 3 Intake piping (flow path forming member)
4 Air cleaner 6 Vertical duct (first flow path forming member)
7 Bellows-shaped duct (second flow path forming member)
10 Duct body 11 Resonator 12 Duct upper end 13 Duct middle 14 Duct lower end 18 Duct ring 19 Duct connection (first connection)
20 Outer intake port 21 Rear intake port 23 Lower end opening 26 Flange engagement groove (engagement groove)
34 Upper end connection (second connection)
34a Inner center 35 Lower end connection 36 Bellows 37 Upper end opening 40 Flange (protruding part)
42 Straight part 43 Curved linear part 44, 50, 52, 54 Pressed part 45, 51, 53, 55 Elastic support part


Claims (2)

下方へ開口する筒形状の第１接続部を有する第１流路形成部材と、
前記第１接続部の内側に下方から嵌入可能な弾性筒形状の第２接続部と、前記第２接続部の内側中央を囲むように前記第２接続部の内周面上で互いに離間する少なくとも３箇所の被押圧部から前記第２接続部の内側へ延びる複数の弾性支持部とを一体的に有する第２流路形成部材と、を備え、
前記複数の弾性支持部は、板状であり、前記第２接続部が前記第１接続部の内側に嵌入されて径方向内側へ押圧されることにより弾性変形し、前記被押圧部を介して前記第２接続部を前記第１接続部の内周面に押し付ける
ことを特徴とする流路形成部材の接続構造。 A first flow path forming member having a tubular first connection portion that opens downward,
At least the elastic tubular second connection portion that can be fitted into the inside of the first connection portion from below and the second connection portion that is separated from each other on the inner peripheral surface of the second connection portion so as to surround the inner center of the second connection portion. A second flow path forming member having a plurality of elastic support portions integrally extending from three pressed portions to the inside of the second connecting portion is provided.
The plurality of elastic support portions have a plate shape, and the second connection portion is fitted inside the first connection portion and is elastically deformed by being pressed inward in the radial direction, and is elastically deformed via the pressed portion. A connection structure of a flow path forming member, characterized in that the second connection portion is pressed against the inner peripheral surface of the first connection portion. 請求項１に記載の流路形成部材の接続構造であって、
前記第２流路形成部材の上端部の外周面には、径方向外側へ突出する突出部が形成され、
前記第１流路形成部材の内周面には、前記第１流路形成部材と前記第２流路形成部材とが接続された部材接続状態で、前記突出部が係合する係合溝が形成される
ことを特徴とする流路形成部材の接続構造。 The connection structure of the flow path forming member according to claim 1.
On the outer peripheral surface of the upper end portion of the second flow path forming member, a protruding portion protruding outward in the radial direction is formed.
On the inner peripheral surface of the first flow path forming member, an engaging groove with which the protruding portion engages is formed in a member connected state in which the first flow path forming member and the second flow path forming member are connected. A connection structure of a flow path forming member, which is characterized in that it is formed.
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PCT/JP2018/020645 WO2018221548A1 (en) 2017-05-31 2018-05-30 Connection structure of flow path forming member
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JPS614090U (en) * 1984-06-14 1986-01-11 日野自動車株式会社 Connection hose used in the intake duct of tailed cab type automobiles
FR2717556B1 (en) * 1994-03-16 1996-04-26 Gloanec Set consisting of a flexible tube and a coaxial tip.
JPH0861577A (en) * 1994-08-12 1996-03-08 Stec:Kk Hose coupling device
JPH0989186A (en) * 1995-09-22 1997-03-31 Inoac Corp Coupling member for pipe cover and coupling
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DE102004054274A1 (en) * 2004-11-09 2006-05-11 Mann + Hummel Gmbh Intake system for the internal combustion engine of a vehicle
DE102009057563A1 (en) * 2009-12-09 2011-06-16 Mahle International Gmbh catcher
ITMO20130339A1 (en) * 2013-12-12 2015-06-13 Cnh Italia Spa DUCT FOR THE AIR INTAKE OF AN ENGINE.
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