JP3125920U

JP3125920U - Duct parts

Info

Publication number: JP3125920U
Application number: JP2006005994U
Authority: JP
Inventors: 昭義榊原
Original assignee: エーティー技研株式会社
Priority date: 2006-07-26
Filing date: 2006-07-26
Publication date: 2006-10-05
Anticipated expiration: 2016-07-26

Abstract

【課題】ダクト及び空調用配管等に容易に適用でき、且つ空気抵抗を低減できるよう予め一体的に形成されたダクト部品を提供する。
【解決手段】筒状の通路連結部２と、その通路連結部２の一端に一体的に形成され他端に進むにつれて広くなるラッパ状の拡径部３と、その拡径部３の他端に一体的に形成され拡径部３の該他端より遠心方向に延在し吹き出しノズル部５の壁部の一部となる平板部４と、からなり、少なくとも拡径部３と平板部４とは同時に型成形された樹脂成形品からなるダクト部品１を形成する。本考案のダクト部品は、予め空気抵抗を低減できるよう一体的に形成されており、ダクト及び空調用配管等に容易に適用できる。
【選択図】図１The present invention provides a duct component that is easily integrated with a duct and an air-conditioning pipe and that is integrally formed in advance so that air resistance can be reduced.
SOLUTION: A tubular passage connecting portion 2, a trumpet-shaped enlarged diameter portion 3 formed integrally with one end of the passage connecting portion 2 and widening toward the other end, and the other end of the enlarged diameter portion 3. And a flat plate portion 4 that extends in the centrifugal direction from the other end of the enlarged diameter portion 3 and becomes a part of the wall portion of the blowing nozzle portion 5, and at least the enlarged diameter portion 3 and the flat plate portion 4. At the same time, the duct part 1 made of a molded resin product is formed. The duct component of the present invention is integrally formed so as to reduce the air resistance in advance, and can be easily applied to a duct and an air conditioning pipe.
[Selection] Figure 1

Description

本考案は、空調用や換気用の空気、あるいはその他の気体を輸送するために用いるダクトを構成するダクト部品に関する。 The present invention relates to a duct component constituting a duct used for transporting air for air conditioning or ventilation, or other gas.

一般に、ダクトにおいて、空気（気体）の流れ方向を屈曲させる場合、図５に示すように、吹き出しノズル部５２に円筒状の連結部５１が取付けられている。従来のダクトは、平板部５３に取付孔５４を設け、後に取付部材等を用いて連結部５１の一端を取付孔５４に取付けられていた。また、流路となる送気管等をラッパ形状とし流体の円滑な流出を助長したダクトも考えられている。
実開平６−８４２４４号公報特開平６−３１３５９７号公報 In general, when bending the flow direction of air (gas) in a duct, a cylindrical connecting portion 51 is attached to a blowing nozzle portion 52 as shown in FIG. In the conventional duct, an attachment hole 54 is provided in the flat plate portion 53, and one end of the connecting portion 51 is attached to the attachment hole 54 later using an attachment member or the like. In addition, a duct is also conceived in which an air pipe or the like serving as a flow path has a trumpet shape to facilitate smooth outflow of fluid.
Japanese Utility Model Publication No. 6-84244 JP-A-6-313597

しかしながら、上記ダクトでは、取付孔５４に連結部５１を取付ける必要があるため、その取付部周辺の形状を空気流れに適した形状とすることは困難である。つまり、取付部周辺の形状をラッパ状とした場合、各送気部材を加工するのに多数の工程を必要とし、ラッパ状に開いた各送気部材を取付孔へ取付ける工作の際にも高度の作業性を要することになる。 However, in the above duct, since it is necessary to attach the connecting portion 51 to the attachment hole 54, it is difficult to make the shape around the attachment portion suitable for the air flow. In other words, if the shape around the attachment part is a trumpet shape, a number of processes are required to process each air supply member, and it is highly sophisticated when attaching each air supply member opened in a trumpet shape to the attachment hole. Workability is required.

また、図５に示すように、連結部５１と吹き出しノズル部５２とが容易に取付け可能な場合、連結部５１から空気が流入する際の空気抵抗は大きくなり、空気が流入しにくいという問題もある。 In addition, as shown in FIG. 5, when the connecting portion 51 and the blowout nozzle portion 52 can be easily attached, the air resistance when air flows from the connecting portion 51 becomes large, and there is a problem that the air hardly flows. is there.

本考案は、このような事情に鑑みてなされたものであり、ダクト及び空調用配管等に容易に適用でき、且つ空気抵抗を低減できるよう予め一体的に形成されたダクト部品を提供することを目的とする。 The present invention has been made in view of such circumstances, and provides a duct component that is easily formed in a duct and an air conditioning pipe and that is formed integrally in advance so as to reduce air resistance. Objective.

この課題を解決するために、本考案のダクト部品は、筒状の通路連結部と、その通路連結部に一体的に形成され他端に進むにつれて広くなるラッパ状の拡径部と、その拡径部の他端に一体的に形成され前期拡径部の前記他端より遠心方向に延在し吹き出しノズル部の壁部の一部となる平板部と、からなり、少なくとも該拡径部と該平板部とは同時に型成形された樹脂成形品からなることを特徴としている。 In order to solve this problem, a duct component according to the present invention includes a cylindrical passage connecting portion, a trumpet-shaped enlarged diameter portion that is formed integrally with the passage connecting portion, and widens toward the other end. A flat plate portion that is integrally formed with the other end of the diameter portion and extends in the centrifugal direction from the other end of the previous enlarged diameter portion and becomes a part of the wall portion of the blowing nozzle portion, and at least the enlarged diameter portion, The flat plate portion is characterized by comprising a resin molded product that is molded at the same time.

上記構成を有する本考案のダクト部品は、通路連結部、拡径部及び平板部が一体的に形成されている。これにより、本考案のダクト部品は、取付け工作の際の高度な作業性を必要とせず、ダクトの構成部品として容易に用いることができる。 In the duct component of the present invention having the above-described configuration, the passage connecting portion, the enlarged diameter portion, and the flat plate portion are integrally formed. Thereby, the duct component of the present invention does not require high workability at the time of installation work, and can be easily used as a component part of the duct.

また、本考案のダクト部品を用いて空気の流れ方向を屈曲させる場合、拡径部がラッパ状となっているため空気抵抗は低減され、空気の円滑な送出を助長することができる。 Further, when the air flow direction is bent using the duct component of the present invention, since the enlarged diameter portion has a trumpet shape, air resistance is reduced, and smooth air delivery can be promoted.

したがって、本考案のダクト部品は、ダクト及び空調用配管等に容易に適用でき、且つ空気抵抗を低減することができる。 Therefore, the duct component of the present invention can be easily applied to ducts and air-conditioning pipes, and can reduce air resistance.

ここで、通路連結部を、予め成形された筒部材を一体的にインサート成形されたものとすることが好ましい。通路連結部と拡径部とを一体的にインサート成形したものは、その接続部分が強固となり、特に補強材を用いる必要がない。また、前記接続部分の内周面に取付部材及び補強材等による突出物ができないことから、さらに空気抵抗を低減できる。 Here, it is preferable that the passage connecting portion is formed by integrally insert-molding a previously molded cylindrical member. In the case where the passage connecting portion and the enlarged diameter portion are integrally insert-molded, the connecting portion becomes strong, and it is not particularly necessary to use a reinforcing material. Moreover, since the protrusion by an attachment member, a reinforcing material, etc. cannot be performed on the inner peripheral surface of the connection portion, the air resistance can be further reduced.

また、空気の流路となるダクト通路は、平板部を壁部の一部として備える吹き出しノズル部と通路連結部と拡径部とで構成され、ダクト通路を区画する内周面を角のない曲面及び平面とすることにより、さらに空気抵抗を低減できる。 The duct passage serving as the air flow path is composed of a blowing nozzle portion having a flat plate portion as a part of the wall portion, a passage connecting portion, and an enlarged diameter portion, and the inner peripheral surface defining the duct passage has no corners. Air resistance can be further reduced by using a curved surface and a flat surface.

本考案のダクト部品は、シート材で一体的にプレス成形されたものでもよい。これにより、各部が均一な材料で成形され、ダクト製造に係る部品数を削減することができる。また、ダクト通路形成において取付部材及び補強材を必要としないことから、ダクト部品の軽量化を図ることができる。さらに、ダクト通路の内周面において、取付部材及び補強材等による凸凹をなくすことができ、空気抵抗を低減できる。さらに、ダクト部品の重量及び強度を変更したい場合、シート材の材料を変更するだけでよく、容易に所望の重量及び強度とすることができる。 The duct component of the present invention may be integrally press-molded with a sheet material. Thereby, each part is shape | molded with a uniform material and the number of parts which concern on duct manufacture can be reduced. Further, since no attachment member and reinforcing material are required in forming the duct passage, the weight of the duct component can be reduced. Furthermore, unevenness due to the mounting member and the reinforcing material can be eliminated on the inner peripheral surface of the duct passage, and the air resistance can be reduced. Furthermore, when it is desired to change the weight and strength of the duct component, it is only necessary to change the material of the sheet material, and the desired weight and strength can be easily obtained.

ここで、シート材としては繊維集積体を接合一体化したものが好ましい。例えば、ガラス繊維からなる繊維集積体は、優れた剛性を有し、成形後も強度を保つことができる。 Here, the sheet material is preferably one in which a fiber assembly is joined and integrated. For example, a fiber assembly made of glass fibers has excellent rigidity and can maintain strength even after molding.

以下、本考案の実施形態について図面を参照しながら説明する。図１は本考案の実施形態におけるダクト部品を示す斜視図である。また、図２は図１のＡ−Ａ断面図であり、図中の矢印は空気流れを示している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a duct part in an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and arrows in the figure indicate the air flow.

図１において、ダクト部品１は、空調用配管となるダクトの一要素であって、通路連結部２と拡径部３と平板部４とを備えている。通路連結部２は、アルミニウム等の金属からなる円筒状の筒部材であり、その一端が図示しない送気管等の送風口に接続され、該送気管より空気が供給される。 In FIG. 1, a duct component 1 is one element of a duct serving as an air conditioning pipe, and includes a passage connecting portion 2, a diameter-expanding portion 3, and a flat plate portion 4. The passage connecting portion 2 is a cylindrical tube member made of a metal such as aluminum, and one end thereof is connected to a blower opening such as an air supply pipe (not shown), and air is supplied from the air supply pipe.

拡径部３及び平板部４は、樹脂材料からなる。拡径部３は、通路連結部２の他端と一体的に形成される。拡径部３の形状は、空気流れ上流から下流に進むにつれて広くなるラッパ状となっており、その内周面は曲面となっている。 The enlarged diameter portion 3 and the flat plate portion 4 are made of a resin material. The enlarged diameter portion 3 is formed integrally with the other end of the passage connecting portion 2. The shape of the enlarged diameter portion 3 is a trumpet shape that becomes wider as the air flow progresses from the upstream side to the downstream side, and its inner peripheral surface is a curved surface.

図２に示すように、拡径部３の曲面の断面は曲線となっている。その曲線の接線は、拡径部３の空気流れ上流側の端部において通路連結部２の円筒軸と平行になっており、空気流れ下流側へ進むにつれてその接線と通路連結部２の円筒軸とのなす角度が直交する方向へ徐々に連続的に変化する。さらに、拡径部３の空気流れ下流側の端部において、前記接線と通路連結部２の円筒軸とが直交している。したがって、通路連結部２から供給される空気は、拡径部３がラッパ状内周曲面を有することにより円滑に送出される。 As shown in FIG. 2, the cross section of the curved surface of the enlarged diameter portion 3 is a curve. The tangent of the curve is parallel to the cylindrical axis of the passage connecting portion 2 at the end of the enlarged diameter portion 3 on the upstream side of the air flow, and the tangential line and the cylindrical axis of the passage connecting portion 2 are advanced toward the downstream side of the air flow. The angle formed by and changes gradually and continuously in the orthogonal direction. Furthermore, the tangent line and the cylindrical axis of the passage connecting portion 2 are orthogonal to each other at the end of the diameter-enlarged portion 3 on the downstream side of the air flow. Therefore, the air supplied from the passage connecting portion 2 is smoothly sent out by the enlarged diameter portion 3 having a trumpet-shaped inner peripheral curved surface.

平板部４は、樹脂材料からなるシート材を用いる。平板部４は、拡径部３の空気流れ下流側の端部と一体的に形成され、拡径部３の前記端部より遠心方向に延在している。すなわち、拡径部３と平板部４は一体であり、一つの樹脂成形品である。 The flat plate portion 4 uses a sheet material made of a resin material. The flat plate portion 4 is formed integrally with the end portion of the enlarged diameter portion 3 on the downstream side of the air flow, and extends in the centrifugal direction from the end portion of the enlarged diameter portion 3. That is, the enlarged diameter part 3 and the flat plate part 4 are integrated, and are one resin molded product.

次に、ダクト部品１の成形方法について説明する。 Next, a method for forming the duct component 1 will be described.

ダクト部品１は、型成形によって一体的に形成される。すなわち、予め熱可塑性樹脂からなる樹脂シート材と、アルミニウムからなる円筒状の筒部材（通路連結部）を準備する。そして、筒部材と樹脂シート材とを型成形により一体化させる。このとき、樹脂シート材は、筒部材に対応する部分において、拡径形状の型により拡径部３形状に成形されている。すなわち、拡径部３と平板部４は、一つの樹脂シート材からなっている。同時に、拡径部３は筒部材と結合し、一体的に形成される。 The duct component 1 is integrally formed by molding. That is, a resin sheet material made of a thermoplastic resin and a cylindrical tube member (passage connecting portion) made of aluminum are prepared in advance. Then, the cylindrical member and the resin sheet material are integrated by molding. At this time, the resin sheet material is formed into the expanded-diameter portion 3 shape by the expanded-diameter mold in the portion corresponding to the cylindrical member. That is, the enlarged diameter portion 3 and the flat plate portion 4 are made of one resin sheet material. At the same time, the enlarged diameter portion 3 is combined with the cylindrical member and formed integrally.

このように、ダクト部品１は、通路連結部２となる筒部材と、一つの樹脂シート材を型成形した樹脂成形品からなる拡径部３及び平板部４と、からなる。ここで、通路連結部２の空気流れ下流端部は、拡径部３と結合されている。すなわち、ダクト部品１は、予め通路連結部２と拡径部３と平板部４とが一体的に形成されている。また、上記のように成形されたダクト部品１は、ダクト通路を区画する内周面に取付部材及び補強材による凹凸はなく、空気抵抗の低減及び軽量化が可能である。 As described above, the duct component 1 includes the cylindrical member that becomes the passage connecting portion 2, and the enlarged diameter portion 3 and the flat plate portion 4 that are made of a resin molded product obtained by molding one resin sheet material. Here, the downstream end of the air flow of the passage connecting portion 2 is coupled to the enlarged diameter portion 3. That is, in the duct part 1, the passage connecting portion 2, the enlarged diameter portion 3, and the flat plate portion 4 are integrally formed in advance. In addition, the duct component 1 formed as described above has no unevenness due to the mounting member and the reinforcing material on the inner peripheral surface defining the duct passage, and can reduce air resistance and reduce weight.

従来、空気流れに適した部材の取付け工作に多数の工程、多額のコスト及び高度な作業性を必要としていた。しかし、樹脂シート材を採用し、上記型成形を用いて一体的に形成されたダクト部品は、成形が容易であり、成形後は困難な取付け作業を要せず、且つ空気流れに適したダクトを形成可能である。 Conventionally, a large number of steps, a large amount of cost, and a high degree of workability have been required to mount a member suitable for air flow. However, duct parts that are made of resin sheet material and are integrally formed using the above molding are easy to mold, do not require difficult installation work after molding, and are suitable for air flow. Can be formed.

以上、説明したとおり、ダクト部品１は、取付工事等の際に高度の作業性を必要とせず、空調用配管及びダクトを構成する一部品として容易に用いることができ、且つ空気抵抗の低減を可能とする。 As described above, the duct part 1 does not require a high degree of workability during installation work or the like, can be easily used as one part constituting the air conditioning pipe and duct, and reduces air resistance. Make it possible.

ここで、ダクト部品１を形成する各部材（筒部材及びシート材）の材料は、成形性及び耐気性に優れた熱可塑性樹脂又は熱硬化性樹脂を含む繊維材等が好ましい。特に、シート材としては、繊維集積体を接合一体化したものが好ましい。例えば、ガラスウール、ロックウール、炭素繊維等の無機繊維あるいは合成繊維、天然繊維等の有機繊維及びこれらを混合したシートを用いることができる。シート材として、無機繊維を用いた場合は耐火性が向上する。また、ガラス繊維を用いた場合は剛性の高いダクト部品を形成でき、形成後は容易に変形することがない。 Here, the material of each member (cylinder member and sheet material) forming the duct component 1 is preferably a fiber material including a thermoplastic resin or a thermosetting resin excellent in moldability and air resistance. In particular, the sheet material is preferably one in which a fiber assembly is joined and integrated. For example, inorganic fibers such as glass wool, rock wool, and carbon fibers, or organic fibers such as synthetic fibers and natural fibers, and a sheet obtained by mixing these fibers can be used. When inorganic fiber is used as the sheet material, fire resistance is improved. In addition, when glass fiber is used, a duct part having high rigidity can be formed and is not easily deformed after formation.

また、ダクト部品１は、上記成形方法の他に、公知手段であるインサート成形、プレス成形及び射出成形などで成形できる。例えば、インサート成形により、予め筒部材をインサートしたところに熱可塑性及び熱硬化性を有する樹脂を流し込む。これにより、拡径部３と平板部４とが形成され、筒部材は拡径部３と一体的に結合される。 Moreover, the duct component 1 can be molded by insert molding, press molding, injection molding, or the like, which are known means, in addition to the above molding method. For example, a resin having thermoplasticity and thermosetting property is poured into a place where the cylindrical member is previously inserted by insert molding. Thereby, the enlarged diameter part 3 and the flat plate part 4 are formed, and the cylindrical member is integrally coupled to the enlarged diameter part 3.

また、プレス成形によりシート材の一部に上記拡径部３を成形し、インサート成形により拡径部３と筒部材とを一体的に形成する。この場合、樹脂シート材を高熱でプレスし、樹脂シート材の一部に拡径部を形成する。 Moreover, the said enlarged diameter part 3 is shape | molded in a part of sheet material by press molding, and the enlarged diameter part 3 and a cylindrical member are integrally formed by insert molding. In this case, the resin sheet material is pressed with high heat, and the enlarged diameter portion is formed in a part of the resin sheet material.

さらに、筒部材を用いず、樹脂シート材からプレス成形により、通路連結部２、拡径部３及び平板部４を一体的に形成することも可能である。この場合も、ダクト通路の内面は角のない平面となり、空気抵抗をより低減できる。 Furthermore, it is also possible to integrally form the passage connecting portion 2, the enlarged diameter portion 3, and the flat plate portion 4 by press molding from a resin sheet material without using a cylindrical member. Also in this case, the inner surface of the duct passage becomes a flat surface without corners, and air resistance can be further reduced.

また、単に樹脂を用いた射出成形によっても形成可能である。 It can also be formed simply by injection molding using a resin.

次に、ダクトの一部品として本考案のダクト部品を適用した使用例について説明する。 Next, a usage example in which the duct part of the present invention is applied as one part of the duct will be described.

図３はダクト部品を備えたダクトの斜視図である。図４は図３のダクトにおけるＢ−Ｂ断面図であり、図中の矢印は空気流れを示している。 FIG. 3 is a perspective view of a duct having duct parts. 4 is a cross-sectional view taken along the line B-B in the duct of FIG. 3, and arrows in the figure indicate the air flow.

図３において、ダクト７は、ダクト部品１０と吹き出しノズル部５とから構成されている。 In FIG. 3, the duct 7 is composed of a duct component 10 and a blowing nozzle portion 5.

ダクト部品１０は、上記ダクト部品１における拡径部３の形状を一部変更したものであり、通路連結部２と拡径部３０と平板部４とから構成されている。 The duct part 10 is obtained by partially changing the shape of the enlarged diameter part 3 in the duct part 1, and includes a passage connecting part 2, an enlarged diameter part 30, and a flat plate part 4.

吹き出しノズル部５は、その一端に送気口となる吹き出し口６を備え、壁部の一部としてダクト部品１０の平板部４を備えている。 The blowing nozzle portion 5 includes a blowing port 6 serving as an air supply port at one end thereof, and includes a flat plate portion 4 of the duct component 10 as a part of the wall portion.

吹き出しノズル部５の形状は、通路連結部２の円筒軸方向の長さ（図４における上下方向の幅）が通路連結部２の直径よりも小さく、通路連結部２の円筒軸と直交する方向の長さが通路連結部２の外径よりも大きくなっている。本実施例において、ダクト通路内の空気流れは、図４に示すように、通路連結部２から流入し吹き出し口６から送出される。 The shape of the blowing nozzle portion 5 is such that the length of the passage connecting portion 2 in the cylindrical axis direction (the vertical width in FIG. 4) is smaller than the diameter of the passage connecting portion 2 and is orthogonal to the cylindrical axis of the passage connecting portion 2. Is longer than the outer diameter of the passage connecting portion 2. In the present embodiment, the air flow in the duct passage flows from the passage connecting portion 2 and is sent out from the outlet 6 as shown in FIG.

拡径部３０の形状は、吹き出し口６に対向する側の拡径部３０の側面（図４における拡径部３０の左側面）が、通路連結部２の円筒軸に略平行形状となっている。その他の部分は、上記拡径部３同様、空気流れ上流から下流に進むにつれて広くなるラッパ状となっている。また、拡径部３０の図３における左右方向にも同様のラッパ状となっている。 The shape of the enlarged diameter portion 30 is such that the side surface (the left side surface of the enlarged diameter portion 30 in FIG. 4) of the enlarged diameter portion 30 on the side facing the outlet 6 is substantially parallel to the cylindrical axis of the passage connecting portion 2. Yes. The other portions have a trumpet shape that becomes wider as the air flow proceeds from the upstream side to the downstream side, as in the case of the enlarged diameter portion 3. Moreover, it is the same trumpet shape also in the left-right direction in FIG.

ダクト部品１０を備えたダクト７において、通路連結部２から流入した空気は、拡径部３０の中央及び図４における拡径部３０の左側内周面沿いを通り通路連結部２の円筒軸と平行に吹き出しノズル部５に送出され、また、ラッパ状となった拡径部３０の内周曲面に沿って吹き出しノズル部５に送出されることになる。こうして、通路連結部２から流入した空気は、吹き出し口６から円滑に送出される。 In the duct 7 including the duct component 10, the air flowing in from the passage connecting portion 2 passes through the center of the enlarged diameter portion 30 and the left inner peripheral surface of the enlarged diameter portion 30 in FIG. 4 and the cylindrical shaft of the passage connecting portion 2. It is sent to the blowing nozzle unit 5 in parallel, and is sent to the blowing nozzle unit 5 along the inner peripheral curved surface of the enlarged diameter portion 30 having a trumpet shape. Thus, the air flowing in from the passage connecting portion 2 is smoothly sent out from the outlet 6.

ダクト７は、ダクト部品１０をダクト通路の一部として用いている。すなわち、予め作製されたダクト部品１０を吹き出しノズル部５の一面として適用している。ここでは、吹き出しノズル部５を樹脂成形品としている。ダクト部品１０が、接着剤等により、吹き出しノズル部５の一部と接着され、吹き出しノズル部５と一体的に形成されている。 The duct 7 uses the duct component 10 as a part of the duct passage. That is, the duct component 10 produced in advance is applied as one surface of the blowing nozzle portion 5. Here, the blowing nozzle portion 5 is a resin molded product. The duct component 10 is bonded to a part of the blowing nozzle portion 5 with an adhesive or the like, and is formed integrally with the blowing nozzle portion 5.

以上、説明したように、ダクト部品１０は、通路連結部２と拡径部３０と平板部４とが予め一体的に形成されているため、平板部４を吹き出しノズル部の壁部として用いるだけでよく、空気抵抗が低減できるダクト７を容易に形成できる。 As described above, in the duct component 10, since the passage connecting portion 2, the enlarged diameter portion 30, and the flat plate portion 4 are integrally formed in advance, only the flat plate portion 4 is used as a wall portion of the blowing nozzle portion. The duct 7 that can reduce the air resistance can be easily formed.

本考案のダクト部品は、取付けに高度な作業性を要しないため、ダクト７以外の空調用配管等にも容易に適用することができる。 Since the duct component of the present invention does not require high workability for installation, it can be easily applied to air-conditioning piping other than the duct 7.

また、ダクト部品１０は、空気抵抗を低減できるため、ダクト７における吹き出しノズル部５の厚さ（通路連結部２の円筒軸方向の長さ）をさらに薄くすることも可能である。 Further, since the duct component 10 can reduce air resistance, the thickness of the blowing nozzle portion 5 in the duct 7 (the length of the passage connecting portion 2 in the cylindrical axis direction) can be further reduced.

他の実施形態としては、拡径部３のラッパ形状において、図２の断面図に示す曲線の接線が、拡径部３の空気流れ下流側へ進むにつれてその接線と通路連結部２の円筒軸とのなす角度が直交する方向へ断続的に変化するよう形成してもよい。また、前期接線が拡径部３の空気流れ下流側の端部において平板部４と鋭角をなすよう形成してもよい。 As another embodiment, in the trumpet shape of the enlarged diameter portion 3, the tangent of the curve shown in the cross-sectional view of FIG. 2 progresses toward the downstream side of the air flow of the enlarged diameter portion 3 and the cylindrical shaft of the passage connecting portion 2. May be formed so as to intermittently change in an orthogonal direction. Further, the tangent line may be formed so as to form an acute angle with the flat plate portion 4 at the end of the enlarged diameter portion 3 on the downstream side of the air flow.

本考案の実施形態におけるダクト部品１を示す斜視図である。It is a perspective view which shows the duct component 1 in embodiment of this invention. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 本考案のダクト部品１０を適用したダクト７の斜視図である。It is a perspective view of the duct 7 to which the duct component 10 of this invention is applied. 図３のＢ−Ｂ断面図である。It is BB sectional drawing of FIG. 図４の断面図に相当する従来のダクトの断面図である。It is sectional drawing of the conventional duct corresponded in sectional drawing of FIG.

Explanation of symbols

１：ダクト部品、２：通路連結部、３：拡径部、４：平板部、５：吹き出しノズル部、６：吹き出し口、７：ダクト、１０：ダクト部品、３０：拡径部
５１：連結部、５２：吹き出しノズル部、５３：平板部、５４：取付孔 1: duct part, 2: passage connecting part, 3: diameter expanding part, 4: flat plate part, 5: blowing nozzle part, 6: blowing port, 7: duct, 10: duct part, 30: diameter expanding part 51: connection Part, 52: blowing nozzle part, 53: flat plate part, 54: mounting hole

Claims

A cylindrical passage connecting portion, a trumpet-shaped enlarged diameter portion formed integrally with one end of the passage connecting portion and widening toward the other end, and formed integrally with the other end of the enlarged diameter portion. And a flat plate portion extending in the centrifugal direction from the other end of the diameter portion and serving as a part of the wall portion of the blowing nozzle portion, and at least the enlarged diameter portion and the flat plate portion are molded simultaneously. A duct part characterized by comprising:

The duct part according to claim 1, wherein the passage connecting portion is formed by integrally molding a pre-formed cylindrical member.

The duct part according to claim 1 or 2, wherein the inner peripheral surface defining the duct passage is a curved surface and a flat surface without corners.

The duct part according to claim 1, wherein the duct part is integrally press-molded with a sheet material.

The duct part according to claim 4, wherein the sheet material is formed by joining and integrating a fiber assembly.