JP2015003414A - 空調用ダクト - Google Patents
空調用ダクト Download PDFInfo
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- JP2015003414A JP2015003414A JP2013128828A JP2013128828A JP2015003414A JP 2015003414 A JP2015003414 A JP 2015003414A JP 2013128828 A JP2013128828 A JP 2013128828A JP 2013128828 A JP2013128828 A JP 2013128828A JP 2015003414 A JP2015003414 A JP 2015003414A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 52
- 238000000071 blow moulding Methods 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 67
- 238000000748 compression moulding Methods 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 239000004088 foaming agent Substances 0.000 claims description 6
- 238000005187 foaming Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 51
- 238000000034 method Methods 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
- B29C65/0609—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding characterised by the movement of the parts to be joined
- B29C65/0618—Linear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
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- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/61—Joining from or joining on the inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H1/00514—Details of air conditioning housings
- B60H1/0055—Details of air conditioning housings the housing or parts thereof being integrated in other devices, e.g. dashboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H1/00557—Details of ducts or cables
- B60H1/00564—Details of ducts or cables of air ducts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/24—Devices purely for ventilating or where the heating or cooling is irrelevant
- B60H1/241—Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle
- B60H1/242—Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle located in the front area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3008—Instrument panels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
【解決手段】 空調用ダクト10は、パリソンを膨らますことで成形されるダクト本体部と、パリソンを部分的に潰すことで成形される圧縮成形部30と、を有する。圧縮成形部30は、インストルメントパネル22の裏面22aに対向する基部31と、基部31の裏面31a側から表面31b側に凹み且つ振動方向に延びる凹部33と、1つの凹部33に対して基部31の表面31b側に複数設けられ、インストルメントパネル22の裏面22a側に突出すると共に振動方向に延びてインストルメントパネル22の裏面22aに振動溶着される溶着リブ37とを有する。
【選択図】 図4
Description
(1)本発明は、ブロー成形によって成形され、車両用内装部品の裏面に振動溶着される樹脂製の空調用ダクトであって、パリソンを膨らますことで成形されるダクト本体部と、前記パリソンを部分的に潰すことで成形される圧縮成形部と、を有し、前記圧縮成形部は、前記車両用内装部品の裏面に対向する基部と、前記基部の裏面側から表面側に凹み、且つ、前記空調用ダクトの振動方向に延びる凹部と、前記凹部に対して前記基部の表面側に複数設けられ、前記車両用内装部品の裏面側に突出すると共に前記振動方向に延びて前記車両用内装部品の裏面に振動溶着される溶着リブと、を有する、ことを特徴とする。
以下、添付図面を参照して、本発明を実施するための形態(以下、「実施形態」と称する)について詳細に説明する。実施形態の説明の全体を通して同じ要素には同じ番号を付している。また、図面は、符号の向きに見るものとする。
空調用ダクト10の全体構成を図1に基づいて説明する。
図1に示すように、実施形態の空調用ダクト10は、ブロー成形によって成形され、インストルメントパネル(以下、「インパネ」と称する)22の裏面22aに振動溶着される樹脂製のダクトである。空調用ダクト10は、基体であるダクト本体部20と、このダクト本体部20の任意の位置(例えば、周縁部21など)に一体成形される複数の圧縮成形部30とを有する。なお、インパネ22は、本発明にいう「車両用内装部品」の一例であり、本発明にいう「車両用内装部品」には、インパネ22の他、車室を内装する各種の内装部品が含まれる。
ダクト本体部20は、空調用ダクト10のうち中空成形される部分であり、車両幅方向に長い平面形状を呈すると共に複数(この例では、4つ)の筒状のダクト部23を有する。複数のダクト部23は、それぞれ、上流側の端部が導入口(図示省略)に連通する。この導入口は、車両用空調装置(図示省略)に接続される。また、ダクト部23の下流側の端部の開口部25は、車室に空気を吹き出す吹き出し口、または、他のダクトに連なる接続口として利用される。
次に、圧縮成形部30を図2〜図4に基づいて説明する。
図2に示すように、圧縮成形部30は、空調用ダクト10のうち圧縮成形される部分であり、インパネ22の裏面22aに対向する基部31と、基部31の表面31bからインパネ22側に突出する複数の突起部32と、を有する。各突起部32は、基部31の裏面31a側から表面31b側に凹む凹部33(図4参照)によって形成されるものである。なお、凹部33の構成については、後述する。
複数の突起部32は、矢印αで示される、振動溶着時の空調用ダクト10の振動方向(以下、「振動方向α」と称する)に沿って直線状に延びる。各突起部32は、基部31の表面31bから立ち上がる一対の側壁35と、一対の側壁35の上端部同士を連結し且つインパネ22の裏面22aに対向する対向壁36と、インパネ22の裏面22a側に突出すると共に振動方向αに延びてインパネ22の裏面22aに振動溶着される複数の溶着リブ37とを有する。
図4に示すように、凹部33は、基部31の裏面31a側から表面31b側に凹み、且つ、振動方向α(図3参照)に沿って溝状に延びる。圧縮成形部30では、この凹部33の形成によって、インパネ22の裏面22a側に上記突起部32を突出させる。このため、凹部33の天井壁は、突起部32の対向壁36に相当し、凹部33の側壁は、突起部32の側壁35に相当する。
溶着リブ37は、丸みを有する形状に形成され、対向壁36の幅方向の両端部それぞれに設けられる。すなわち、この例では、1つの凹部33に対して2つの溶着リブ37が設定される。
次に、空調用ダクト10の製造方法の一例を図6〜図8に基づいて説明する。
図6に示すように、空調用ダクト10の製造方法は、ブロー成形用の成形金型50を用いてブロー成形を行うものであり、型締め工程、成形工程、型開き工程を含む。
成形金型50は、互いに合わさる第1の金型51および第2の金型61を備える。
型締め工程では、押し出し装置(図示省略)から押し出された溶融状態の筒状のパリソン66を第1の金型51と第2の金型61の間に垂下させた後、第1の金型51と第2の金型61を接近させて、第1の金型51と第2の金型61でパリソン66を挟む(矢印(1))。
成形工程では、パリソン66内に加圧エアを吹き込み、パリソン66を膨らませてダクト本体部20(図1参照)を中空成形すると共に、図7に示すように、第1の成形面52および第2の成形面62により、パリソン66を部分的に潰して圧縮成形を行う。
図8に示すように、型開き工程では、第1の金型51と第2の金型61を離間させ(矢印(5))、第1の金型51と第2の金型61の間から、空調用ダクト10の成形体を取り出す。空調用ダクト10の成形体では、パリソン66を部分的に潰すことで成形された圧縮成形部30と、パリソン66を膨らますことで成形されたダクト本体部20(図1参照)とが一体成形されている。
以上、説明した実施形態の作用・効果について述べる。
本実施形態によれば、リブ成形面57に対して、パリソン66の一部を凸状成形面65で押し込むようにして、複数の溶着リブ37を圧縮成形することができる。このため、隣り合う2つの溶着リブ37の間隔Pが狭く、且つ、幅Wの狭い複数の溶着リブ37をブロー成形時に確実に成形することができる。その結果、インパネ22の裏面22aに複数の溶着リブ37を押し付けて振動溶着したとき、インパネ22の裏面22aに対する押し付け力が分散し易くなる。したがって、インパネ22の表面22bに凹凸が形成されることを効果的に防ぐことができ、インパネ22の意匠性を高めることができる。
20 ダクト本体部
22 インストルメントパネル(車両用内装部品)
22a 裏面
30 圧縮成形部
31 基部
31a 基部の裏面
31b 基部の表面
33 凹部
37 溶着リブ
66 パリソン
α 振動方向
W 溶着リブの幅
P 溶着リブの間隔
Claims (4)
- ブロー成形によって成形され、車両用内装部品の裏面に振動溶着される樹脂製の空調用ダクトであって、
パリソンを膨らますことで成形されるダクト本体部と、
前記パリソンを部分的に潰すことで成形される圧縮成形部と、
を有し、
前記圧縮成形部は、
前記車両用内装部品の裏面に対向する基部と、
前記基部の裏面側から表面側に凹み、且つ、前記空調用ダクトの振動方向に延びる凹部と、
前記凹部に対して前記基部の表面側に複数設けられ、前記車両用内装部品の裏面側に突出すると共に前記振動方向に延びて前記車両用内装部品の裏面に振動溶着される溶着リブと、
を有する、ことを特徴とする空調用ダクト。 - 前記溶着リブの幅は、2mm以下であることを特徴とする請求項1に記載の車両用空調用ダクト。
- 隣り合う2つの前記溶着リブの間隔は、5mm以下であることを特徴とする請求項1または2に記載の空調用ダクト。
- 前記ダクト本体部および前記圧縮成形部は、
発泡剤によって樹脂を発泡させて成形した発泡成形体である、
ことを特徴とする請求項1〜3のいずれかに記載の空調用ダクト。
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