JP7535769B2 - Length adjustable air duct - Google Patents
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- JP7535769B2 JP7535769B2 JP2020084759A JP2020084759A JP7535769B2 JP 7535769 B2 JP7535769 B2 JP 7535769B2 JP 2020084759 A JP2020084759 A JP 2020084759A JP 2020084759 A JP2020084759 A JP 2020084759A JP 7535769 B2 JP7535769 B2 JP 7535769B2
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- 230000008602 contraction Effects 0.000 claims description 6
- 238000007664 blowing Methods 0.000 description 6
- 238000004904 shortening Methods 0.000 description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Rigid Pipes And Flexible Pipes (AREA)
- Duct Arrangements (AREA)
Description
特許法第３０条第２項適用 １．令和２年３月２６日，設置Application of Article 30, Paragraph 2 of the Patent Act 1. Established on March 26, 2020
本発明は、トンネル工事や採掘作業等において送気又は排気等に用いられる風管体に関する。 The present invention relates to an air duct used for supplying or exhausting air during tunnel construction, mining work, etc.
トンネル工事現場や採掘現場等では、送気又は排気等を目的として、例えば特許文献１のように、筒状の風管体が複数連結されてなる可撓性の風管が設けられることがある。
また、坑道が複数存在する場合は、例えば特許文献２のように、１本の風管を分岐させて用いる場合がある。
2. Description of the Related Art At tunnel construction sites, mining sites, and the like, flexible air ducts made up of a plurality of connected cylindrical air duct bodies are sometimes installed for the purpose of supplying or exhausting air, as disclosed in, for example, Patent Document 1.
Furthermore, when there are multiple tunnels, a single air pipe may be branched and used, as in Patent Document 2, for example.
可撓性を有する所定長（例えば１０ｍ）の風管体を複数連結してなる設置済みの風管の途中に分岐を設けようとする場合、連結されている風管体の一つを取り外して分岐用の三又等の風管体に差し替えることがある。差し替える分岐用の風管体を所定長の風管体に接続するにあたっては、分岐用の風管体と所定長の風管体との間に隙間が生じるため、その隙間に長さ調整用の風管体を配置する。長さ調整用の風管体は所定長の風管体を取り外した後にできるスペースの実測値に基づいた全長で製作されるが、実測は風管に空気が流れていない風管体が萎んだ状態で行われることなどに起因して、長さ調整用の風管体の長さが、空気が流れて風管体が膨らんだ状態での隙間寸法と合わないことが多い。そのため、長さ調整用の風管体を介して分岐用の風管体と所定長の風管体を連結して送風を開始すると、分岐箇所における風管に皺ができたり形状が歪になったりしてしまい、送風機からの送風効率が低下して電気代の増加等を招く。また、この対策として全長が異なる長さ調整用の風管体を複数準備する場合もあるが、この場合は、一旦セットした長さ調整用の風管体の長さが適切でなければ他の長さ調整用の風管体に交換する必要があるなど手間隙がかかる。 When a branch is to be provided in the middle of an installed air duct consisting of multiple connected flexible air ducts of a specified length (for example, 10 m), one of the connected air ducts may be removed and replaced with an air duct such as a branching three-prong. When connecting the branching air duct to be replaced to the air duct of the specified length, a gap is created between the branching air duct and the air duct of the specified length, so an air duct for length adjustment is placed in the gap. The air duct for length adjustment is manufactured with a total length based on the actual measurement of the space created after removing the air duct of the specified length, but the actual measurement is performed in a deflated state where no air flows through the air duct, and the length of the air duct for length adjustment often does not match the gap dimension when the air duct is inflated with air flowing through it. Therefore, when the branching air duct and the air duct of the specified length are connected through the air duct for length adjustment and air blowing is started, wrinkles are formed in the air duct at the branch point or the shape is distorted, which reduces the air blowing efficiency from the blower and leads to an increase in electricity bills, etc. As a countermeasure to this, multiple length-adjustable air ducts with different overall lengths may be prepared, but in this case, if the length of the length-adjustable air duct that has been set is not appropriate, it must be replaced with another length-adjustable air duct, which is time-consuming.
また、特許文献１は、風管を分岐させる場合については何ら記載されていない。
また、特許文献２は、本管から分岐した枝管の風量を確保しようとするものであり、風管を分岐させた場合の上記したような取り合いの問題については何ら記載されていない。
そこで本発明は、現場において適切な長さに調節することができる長さ調節機能付風管体を提供することを目的とする。
Moreover, Patent Document 1 does not disclose anything about branching the air duct.
Furthermore, Patent Document 2 aims to ensure the volume of air in the branch pipes branching off from the main pipe, but makes no mention of the above-mentioned problem of conflict when the air pipes are branched off.
SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide an air duct body with a length adjustment function that can be adjusted to an appropriate length on-site.
請求項１記載の本発明の長さ調節機能付風管体１は、一端αに一方の連結部１０を有し、他端βに他方の連結部１１を有した可撓性の風管体であって、一方の連結部１０と他方の連結部１１との間に、第一中間接続部３０と第一中間接続部３０に接続する第二中間接続部３１を備え、第一中間接続部３０と第二中間接続部３１との接続により長さが縮まり、第一中間接続部３０と第二中間接続部３１の少なくとも一方を複数備え、第一中間接続部３０と第二中間接続部３１との接続は務歯列とスライダーを有する線ファスナーによる接続であり、第二中間接続部３１の数が第一中間接続部３０の数よりも多く、第一中間接続部３０が他方の連結部１１の近傍に設けられていることを特徴する。 The length-adjustable air duct body 1 of the present invention described in claim 1 is a flexible air duct body having one connecting part 10 at one end α and the other connecting part 11 at the other end β, and is characterized in that it has a first intermediate connecting part 30 and a second intermediate connecting part 31 connected to the first intermediate connecting part 30 between the one connecting part 10 and the other connecting part 11, the length is shortened by the connection between the first intermediate connecting part 30 and the second intermediate connecting part 31, it has at least one of the first intermediate connecting part 30 and the second intermediate connecting part 31 in plurality, the connection between the first intermediate connecting part 30 and the second intermediate connecting part 31 is made by a line fastener having a row of coupling teeth and a slider, the number of the second intermediate connecting parts 31 is greater than the number of the first intermediate connecting parts 30, and the first intermediate connecting part 30 is provided in the vicinity of the other connecting part 11 .
請求項２記載の本発明は、請求項１に記載の長さ調節機能付風管体１において、第二中間接続部３１が一方の連結部１０の近傍に設けられていることを特徴とする。 The present invention as set forth in claim 2 is characterized in that in the length adjustable air duct body 1 as set forth in claim 1 , the second intermediate connection part 31 is provided in the vicinity of one of the connecting parts 10.
請求項３記載の本発明は、請求項２に記載の長さ調節機能付風管体１において、第一中間接続部３０が長さ方向の中央にも設けられていることを特徴とする。 The present invention described in claim 3 is characterized in that in the length-adjustable air duct body 1 described in claim 2, the first intermediate connection part 30 is also provided in the center in the length direction.
請求項４記載の本発明は、請求項１から請求項３のいずれか一項に記載の長さ調節機能付風管体１において、第一中間接続部３０及び第二中間接続部３１は、風管体の伸縮方向に対して垂直に風管体の円周方向に亘って設けられていることを特徴とする。 The present invention described in claim 4 is characterized in that in the length-adjustable air duct body 1 described in any one of claims 1 to 3, the first intermediate connection part 30 and the second intermediate connection part 31 are provided in the circumferential direction of the air duct body perpendicular to the extension and contraction direction of the air duct body.
本発明によれば、現場において適切な長さに調節することができる長さ調節機能付風管体を提供することができる。 The present invention provides a length-adjustable air duct that can be adjusted to an appropriate length on-site.
本発明の第１の実施の形態による長さ調節機能付風管体は、一端に一方の連結部を有し、他端に他方の連結部を有した可撓性の風管体であって、一方の連結部と他方の連結部との間に、第一中間接続部と第一中間接続部に接続する第二中間接続部を備え、第一中間接続部と第二中間接続部との接続により長さが縮まるものである。
本実施の形態によれば、現場で他の風管体と連結する際に、風管に皺や歪等を生じさせない適切な長さに調節することができる。
The length-adjustable air duct body according to the first embodiment of the present invention is a flexible air duct body having one connecting portion at one end and the other connecting portion at the other end, and is provided with a first intermediate connecting portion and a second intermediate connecting portion connected to the first intermediate connecting portion between the one connecting portion and the other connecting portion, and the length of the air duct body is shortened by connecting the first intermediate connecting portion and the second intermediate connecting portion.
According to this embodiment, when connecting to other air duct bodies on site, the air duct can be adjusted to an appropriate length that does not cause wrinkles, distortions, or the like in the air duct.
本発明の第２の実施の形態は、第１の実施の形態による長さ調節機能付風管体において、第一中間接続部と第二中間接続部の少なくとも一方を複数備えるものである。
本実施の形態によれば、長さを細かく調節することができる。
In a second embodiment of the present invention, the length-adjustable air duct according to the first embodiment includes at least one of a first intermediate connection portion and a second intermediate connection portion provided in a plurality of portions.
According to this embodiment, the length can be finely adjusted.
本発明の第３の実施の形態は、第１又は第２の実施の形態による長さ調節機能付風管体において、第一中間接続部が他方の連結部の近傍に設けられ、第二中間接続部が一方の連結部の近傍に設けられているものである。
本実施の形態によれば、他方の連結部の近傍に設けられた第一中間接続部と一方の連結部の近傍に設けられた第二中間接続部を接続することで、長さを大きく縮めることができる。
A third embodiment of the present invention is an air duct body with length adjustment function according to the first or second embodiment, in which a first intermediate connection portion is provided in the vicinity of the other connecting portion, and a second intermediate connection portion is provided in the vicinity of one connecting portion.
According to this embodiment, the length can be significantly reduced by connecting a first intermediate connecting portion provided near the other connecting portion and a second intermediate connecting portion provided near one connecting portion.
本発明の第４の実施の形態は、第３の実施の形態による長さ調節機能付風管体において、第一中間接続部が長さ方向の中央にも設けられているものである。
本実施の形態によれば、中央に設けた第一中間接続部を利用することで、より細かい長さ調節が可能となる。
A fourth embodiment of the present invention is an air duct with a length adjustment function according to the third embodiment, in which a first intermediate connection part is also provided at the center in the length direction.
According to this embodiment, by utilizing the first intermediate connecting portion provided in the center, more precise length adjustment is possible.
本発明の第５の実施の形態は、第１から第４のいずれか一つの実施の形態による長さ調節機能付風管体において、第一中間接続部及び第二中間接続部は、風管体の伸縮方向に対して垂直に風管体の円周方向に亘って設けられているものである。
本実施の形態によれば、風管体の伸縮方向に対して第一中間接続部及び第二中間接続部が常に垂直な状態を維持して長さを調節できるため、調整後の歪がでず、風管の形状を保って圧損を小さくし送風状態を好適なものとすることができる。
A fifth embodiment of the present invention is a length-adjustable air duct body according to any one of the first to fourth embodiments, in which the first intermediate connection portion and the second intermediate connection portion are provided along the circumferential direction of the air duct body perpendicular to the extension and contraction direction of the air duct body.
According to this embodiment, the length can be adjusted while always maintaining the first intermediate connection part and the second intermediate connection part perpendicular to the extension and contraction direction of the air pipe body, so that no distortion occurs after adjustment, the shape of the air pipe is maintained, pressure loss is reduced, and the air blowing condition is favorable.
本発明の第６の実施の形態は、第１から第５のいずれか一つの実施の形態による長さ調節機能付風管体において、第一中間接続部と第二中間接続部との接続は線ファスナーによる接続であるものである。
本実施の形態によれば、第一中間接続部と第二中間接続部との接続を迅速かつ確実に行うことができる。
A sixth embodiment of the present invention is a length-adjustable air duct body according to any one of the first to fifth embodiments, in which the first intermediate connection part and the second intermediate connection part are connected by a linear fastener.
According to this embodiment, the first intermediate connecting portion and the second intermediate connecting portion can be connected quickly and reliably.
以下、本発明の一実施例による風管体について説明する。
図１は本実施例による長さ調節機能付風管体の側面図である。
長さ調節機能付風管体１は、例えば全長１００００ｍｍ、直径１８００ｍｍの円筒状に膨らむ塩化ビニル樹脂製等の可撓性の風管体を２００本ほど連結してなる風管において、一部の風管体を取り外して分岐用の塩化ビニル樹脂製等の可撓性の風管体と差し替える際に生じる既設の風管体と分岐用の風管体との隙間を埋めるための長さ調整用の風管体として用いることができる。長さ調節機能付風管体１は、可撓性を有するように例えば塩化ビニル樹脂製とする。
長さ調節機能付風管体１の全長（最大長）は、一部の風管体を取り外した後にできるスペースの実測値に基づいて設定する。図１では、長さ調節機能付風管体１の寸法を、全長３０００ｍｍ、直径１８００ｍｍとしている。
長さ調節機能付風管体１には、他の風管体と連結するための連結部として、一端αに設けられた一方の連結部１０と、他端βに設けられた他方の連結部１１を備える。長さ調節機能付風管体１は、連結部により他の風管体と連結することができる。なお、長さ調節機能を備えない従来の風管体と連結可能であるだけでなく、長さ調節機能付風管体１同士を連結することも可能である。
連結部は、連結相手となる他の風管体が備える連結方法に対応したものとする。本実施例では、線ファスナーにより連結するタイプの風管体と連結することを想定して、連結部に務歯列の片割れを長さ調節機能付風管体１の伸縮方向に対して垂直に円周方向に亘って設けている。一方の連結部１０には務歯列の片割れとして第一務歯列２０を設け、他方の連結部１１には第一務歯列２０と対になる第二務歯列２１を設けている。
Hereinafter, an air duct according to an embodiment of the present invention will be described.
FIG. 1 is a side view of an air duct with a length adjustment function according to this embodiment.
The length-adjustable air duct body 1 can be used as an air duct body for adjusting the length to fill a gap between an existing air duct body and a branching air duct body that occurs when removing some of the air duct bodies and replacing them with branching air duct bodies made of vinyl chloride resin or the like in an air duct consisting of about 200 connected flexible air duct bodies made of vinyl chloride resin or the like that expand into a cylindrical shape with a total length of 10,000 mm and a diameter of 1,800 mm. The length-adjustable air duct body 1 is made of vinyl chloride resin, for example, so as to have flexibility.
The total length (maximum length) of the length-adjustable air duct body 1 is set based on the actual measurement of the space available after removing some of the air duct bodies. In Fig. 1, the dimensions of the length-adjustable air duct body 1 are 3000 mm in total length and 1800 mm in diameter.
The length-adjustable air duct body 1 has a connecting part 10 provided at one end α and a connecting part 11 provided at the other end β as connecting parts for connecting with other air duct bodies. The length-adjustable air duct body 1 can be connected with other air duct bodies by the connecting parts. It is possible to connect not only with a conventional air duct body without a length adjustment function, but also to connect air duct bodies 1 with length adjustment functions to each other.
The connecting portion corresponds to the connecting method of the other air pipe body to be connected. In this embodiment, assuming that the air pipe body is connected to a type of air pipe body that is connected by a line fastener, one half of the tooth row is provided in the connecting portion along the circumferential direction perpendicular to the extension and contraction direction of the air pipe body 1 with the length adjustment function. One connecting portion 10 is provided with a first tooth row 20 as one half of the tooth row, and the other connecting portion 11 is provided with a second tooth row 21 that is paired with the first tooth row 20.
長さ調節機能付風管体１は、一方の連結部１０と他方の連結部１１との間に、長さ調節に用いる中間接続部を備える。中間接続部は、長さ調節機能付風管体１の伸縮方向に対して垂直に円周方向に亘って円環状に設けられており、第一中間接続部３０と、その対となる第二中間接続部３１からなる。
第一中間接続部３０は、他方の連結部１１の近傍と、長さ方向の中央に設けられている。ここで他方の連結部１１の近傍とは、他端βから長さ調節機能付風管体１の全長の１０％までの範囲をいう。本実施例では、他方の連結部１１の近傍に配置する第一中間接続部３０Ａの位置を他端βから２５０ｍｍとし、長さ方向の中央に配置する第一中間接続部３０Ｂの位置を他端βから１５００ｍｍとしている。
第二中間接続部３１は、一方の連結部１０の近傍に一箇所と、それ以外に四箇所設けられている。ここで一方の連結部１０の近傍とは、一端αから長さ調節機能付風管体１の全長の１０％までの範囲をいう。第二中間接続部３１同士は等間隔に配置されている。また、他方の連結部１１の近傍に配置された第一中間接続部３０Ａとそれに最も近い第二中間接続部３１Ａとの間隔は、第二中間接続部３１同士の間隔と等しい。また、長さ方向の中央に配置された第一中間接続部３０Ｂとその両側にある第二中間接続部３１Ｂ、３１Ｃとの間隔は、第二中間接続部３１同士の間隔よりも短い。図１では、第二中間接続部３１は、他方の連結部１１の近傍に配置された第一中間接続部３０Ａから５００ｍｍ間隔で配置されており、一方の連結部１０の近傍に配置された第二中間接続部３１Ｅは一端αから２５０ｍｍの位置にある。また、長さ方向の中央に配置された第一中間接続部３０Ｂと、その両側に配置された第二中間接続部３１Ｂ、３１Ｃとの間隔は２５０ｍｍである。
The length-adjustable air duct 1 has an intermediate connection part used for length adjustment between one connecting part 10 and the other connecting part 11. The intermediate connection part is provided in an annular shape in the circumferential direction perpendicular to the extension/contraction direction of the length-adjustable air duct 1, and is composed of a first intermediate connection part 30 and a paired second intermediate connection part 31.
The first intermediate connection part 30 is provided in the vicinity of the other connecting part 11 and in the center in the longitudinal direction. Here, the vicinity of the other connecting part 11 refers to a range from the other end β to 10% of the total length of the air duct body 1 with length adjustment function. In this embodiment, the position of the first intermediate connection part 30A located in the vicinity of the other connecting part 11 is 250 mm from the other end β, and the position of the first intermediate connection part 30B located in the center in the longitudinal direction is 1500 mm from the other end β.
The second intermediate connection part 31 is provided at one location near one of the connecting parts 10 and at four other locations. Here, the vicinity of one of the connecting parts 10 refers to a range from one end α to 10% of the total length of the air duct body 1 with length adjustment function. The second intermediate connection parts 31 are arranged at equal intervals. The interval between the first intermediate connection part 30A arranged near the other connecting part 11 and the second intermediate connection part 31A closest to it is equal to the interval between the second intermediate connection parts 31. The interval between the first intermediate connection part 30B arranged in the center in the length direction and the second intermediate connection parts 31B and 31C on both sides of it is shorter than the interval between the second intermediate connection parts 31. In FIG. 1, the second intermediate connection part 31 is arranged at an interval of 500 mm from the first intermediate connection part 30A arranged near the other connecting part 11, and the second intermediate connection part 31E arranged near one of the connecting parts 10 is located 250 mm from the one end α. The distance between the first intermediate connecting portion 30B disposed in the center in the longitudinal direction and the second intermediate connecting portions 31B and 31C disposed on either side thereof is 250 mm.
第一中間接続部３０にはテープ４０の端に第一務歯列２０が設けられ、第二中間接続部３１にはテープ４０の端に第二務歯列２１が設けられている。第一中間接続部３０と第二中間接続部３１は、第一中間接続部３０の第一務歯列２０と第二中間接続部３１の第二務歯列２１をスライダーで噛合わせることにより接続できる。第一中間接続部３０と第二中間接続部３１との接続を線ファスナーによる接続とすることで、第一中間接続部３０と第二中間接続部３１との接続を迅速かつ空気漏れ等の無いように確実に行うことができる。
第一中間接続部３０と第二中間接続部３１を接続すると、長さ調節機能付風管体１の一端αから他端βまでの長さが縮まる。図１には、他方の連結部１１の近傍に配置された第一中間接続部３０Ａを第二中間接続部３１に接続した場合に長さ調節機能付風管体１が短くなる長さを、第二中間接続部３１の位置ごとに示している。第一中間接続部３０Ａを、他端βに最も近い第二中間接続部３１Ａに接続した場合は５００ｍｍ、他端βに二番目に近い第二中間接続部３１Ｂに接続した場合は１０００ｍｍ、他端βに三番目に近い第二中間接続部３１Ｃに接続した場合は１５００ｍｍ、他端βに四番目に近い第二中間接続部３１Ｄに接続した場合は２０００ｍｍ、他端βから最も遠い第二中間接続部３１Ｅに接続した場合は２５００ｍｍ、長さを縮めることができる。このように第二中間接続部３１を複数備えることで、長さ調節機能付風管体１の長さを細かく調節することができる。また、他方の連結部１１の近傍に設けられた第一中間接続部３０Ａと一方の連結部１０の近傍に設けられた第二中間接続部３１Ｅを接続することで、長さを大きく縮めることができる。なお、第一中間接続部３０Ａを一方の連結部１０の近傍に配置し、第二中間接続部３１Ｅを他方の連結部１１の近傍に配置することもできる。
また、図１には示していないが、他方の連結部１１の近傍に配置された第一中間接続部３０Ａと第二中間接続部３１との接続と併せて、或いはその代わりに、長さ方向の中央に配置された第一中間接続部３０Ｂを第二中間接続部３１と接続することもできる。第一中間接続部３０Ａと第一中間接続部３０Ｂとでは第二中間接続部３１までの距離が異なるため、第一中間接続部３０Ｂを第二中間接続部３１と接続することで、第一中間接続部３０Ａを第二中間接続部３１と接続する場合とは異なる長さに調節することができる。このように、第一中間接続部３０を長さ方向の中央にも設けることで、より細かい長さ調節が可能となる。
The first intermediate connecting part 30 has a first interlocking tooth row 20 at an end of the tape 40, and the second intermediate connecting part 31 has a second interlocking tooth row 21 at an end of the tape 40. The first intermediate connecting part 30 and the second intermediate connecting part 31 can be connected by meshing the first interlocking tooth row 20 of the first intermediate connecting part 30 with the second interlocking tooth row 21 of the second intermediate connecting part 31 with a slider. By connecting the first intermediate connecting part 30 and the second intermediate connecting part 31 with a line fastener, the first intermediate connecting part 30 and the second intermediate connecting part 31 can be connected quickly and reliably without air leakage, etc.
When the first intermediate connection part 30 and the second intermediate connection part 31 are connected, the length from one end α to the other end β of the length-adjustable air duct body 1 is shortened. FIG. 1 shows the length of the length-adjustable air duct body 1 shortened when the first intermediate connection part 30A arranged near the other connecting part 11 is connected to the second intermediate connection part 31 for each position of the second intermediate connection part 31. When the first intermediate connection part 30A is connected to the second intermediate connection part 31A closest to the other end β, the length can be shortened by 500 mm, when the first intermediate connection part 30A is connected to the second intermediate connection part 31B second closest to the other end β, the length can be shortened by 1000 mm, when the first intermediate connection part 30A is connected to the second intermediate connection part 31C third closest to the other end β, 2000 mm, when the first intermediate connection part 30A is connected to the second intermediate connection part 31D fourth closest to the other end β, and 2500 mm, when the first intermediate connection part 30A is connected to the second intermediate connection part 31E farthest from the other end β. By providing a plurality of second intermediate connection parts 31 in this way, the length of the length-adjustable air duct body 1 can be finely adjusted. In addition, the length can be significantly reduced by connecting the first intermediate connection part 30A provided near the other connecting part 11 to the second intermediate connection part 31E provided near one connecting part 10. Note that the first intermediate connection part 30A can be disposed near one connecting part 10, and the second intermediate connection part 31E can be disposed near the other connecting part 11.
1, in addition to or instead of the connection between the first intermediate connecting part 30A and the second intermediate connecting part 31 arranged near the other coupling part 11, the first intermediate connecting part 30B arranged in the center in the longitudinal direction can be connected to the second intermediate connecting part 31. Since the first intermediate connecting part 30A and the first intermediate connecting part 30B have different distances to the second intermediate connecting part 31, by connecting the first intermediate connecting part 30B to the second intermediate connecting part 31, it is possible to adjust the length to a different length from that in the case where the first intermediate connecting part 30A is connected to the second intermediate connecting part 31. In this way, by providing the first intermediate connecting part 30 also in the center in the longitudinal direction, more precise length adjustment is possible.
図２は長さ調節機能付風管体を縮めた状態を示す図である。なお、図２では長さ調節機能付風管体の上半分のみを示している。
長さ調節機能付風管体１を他の風管体と連結する際には、例えば、一方の連結部１０に設けられた第一務歯列２０を左隣にある風管体の右端部に設けられた第二務歯列２１にスライダーで噛合わせることにより左隣の風管体に接続し、他方の連結部１１に設けられた第二務歯列２１を右隣にある風管体の左端部に設けられた第一務歯列２０にスライダーで噛合わせることにより右隣の風管体に接続した後、長さ調節機能付風管体１がだぶつかない適切な長さとなる第一中間接続部３０と第二中間接続部３１との組み合わせを選択し、選択した第一中間接続部３０と第二中間接続部３１を接続する。なお、長さ調節機能付風管体１の長さの調節は、他の風管体と連結する前に地上で行うこともできる。
第一中間接続部３０と第二中間接続部３１の区別を容易にするため、第一中間接続部３０と第二中間接続部３１の少なくとも一方には、目印をつけておくことが好ましい。また、各第二中間接続部３１に、第一中間接続部３０と接続した場合に短縮される長さを明示しておくことも有用である。
Fig. 2 is a diagram showing the length-adjustable air duct in a retracted state, in which only the upper half of the length-adjustable air duct is shown.
When connecting the length-adjustable air pipe body 1 to another air pipe body, for example, the first tooth row 20 provided on one connecting part 10 is engaged with the second tooth row 21 provided at the right end of the left adjacent air pipe body by a slider to connect it to the left adjacent air pipe body, and the second tooth row 21 provided on the other connecting part 11 is engaged with the first tooth row 20 provided at the left end of the right adjacent air pipe body by a slider to connect it to the right adjacent air pipe body, and then a combination of the first intermediate connection part 30 and the second intermediate connection part 31 that gives the length-adjustable air pipe body 1 an appropriate length without excess is selected, and the selected first intermediate connection part 30 and the second intermediate connection part 31 are connected. The length of the length-adjustable air pipe body 1 can also be adjusted on the ground before connecting it to another air pipe body.
In order to easily distinguish between the first intermediate connecting portion 30 and the second intermediate connecting portion 31, it is preferable to mark at least one of the first intermediate connecting portion 30 and the second intermediate connecting portion 31. It is also useful to clearly indicate on each second intermediate connecting portion 31 the length that will be shortened when connected to the first intermediate connecting portion 30.
図２（ａ）は、他方の連結部１１の近傍に配置された第一中間接続部３０Ａと、他端βに最も近い第二中間接続部３１Ａを接続し、長さ調節機能付風管体１の長さを５００ｍｍ短縮した場合を示している。この場合は、図中に点線で示すように、短縮によって長さ調節機能付風管体１の一部が余るが、連結した他の風管体の内側への飛び出しは無い。
図２（ｂ）は、他方の連結部１１の近傍に配置された第一中間接続部３０Ａと、他端βに二番目に近い第二中間接続部３１Ｂを接続し、長さ調節機能付風管体１の長さを１０００ｍｍ短縮した場合を示している。この場合は、図中に点線で示すように、短縮によって余った長さ調節機能付風管体１の一部が連結した他の風管体の内側に２４０ｍｍほど飛び出す。
図２（ｃ）は、他方の連結部１１の近傍に配置された第一中間接続部３０Ａと、他端βに三番目に近い第二中間接続部３１Ｃを接続し、長さ調節機能付風管体１の長さを１５００ｍｍ短縮した場合を示している。この場合は、図中に点線で示すように、短縮によって余った長さ調節機能付風管体１の一部が連結した他の風管体の内側に４９０ｍｍほど飛び出す。
図２（ｄ）は、他方の連結部１１の近傍に配置された第一中間接続部３０Ａと、他端βに四番目に近い第二中間接続部３１Ｄを接続し、長さ調節機能付風管体１の長さを２０００ｍｍ短縮した場合を示している。この場合は、図中に点線で示すように、短縮によって余った長さ調節機能付風管体１の一部が連結した他の風管体の内側に７４０ｍｍほど飛び出す。
図２（ｅ）は、他方の連結部１１の近傍に配置された第一中間接続部３０Ａと、他端βに五番目に近い第二中間接続部３１Ｅを接続し、長さ調節機能付風管体１の長さを２５００ｍｍ短縮した場合を示している。この場合は、図中に点線で示すように、短縮によって余った長さ調節機能付風管体１の一部が連結した他の風管体の内側に９９０ｍｍほど飛び出す。
このように、長さ調節機能付風管体１の長さを短くすることで、余った部分が風管の内側に飛び出す場合があるが、長さ調節機能付風管体１は可撓性の材料で構成されているため、送風機から送風が開始されると飛び出した部分は空気の流れによって風管の内面に張り付き送風の抵抗とはならない。
なお、風管体の厚みは０．２５ｍｍ～０．８ｍｍとすることが好ましく、０．４５ｍｍとすることが最も好ましい。これにより、適切な強度と可撓性を兼ね備えた長さ調節機能付風管体１とすることができる。
2(a) shows a case where the first intermediate connection part 30A arranged near the other connecting part 11 and the second intermediate connection part 31A closest to the other end β are connected to shorten the length of the length-adjustable air duct body 1 by 500 mm. In this case, as shown by the dotted line in the figure, a part of the length-adjustable air duct body 1 is left over due to the shortening, but it does not protrude into the inside of the other connected air duct body.
2(b) shows a case where the first intermediate connection part 30A arranged near the other connecting part 11 and the second intermediate connection part 31B next closest to the other end β are connected to shorten the length of the length-adjustable air duct body 1 by 1000 mm. In this case, as shown by the dotted line in the figure, a part of the length-adjustable air duct body 1 that is left over due to the shortening protrudes about 240 mm into the inside of the other connected air duct body.
2(c) shows a case where the first intermediate connection part 30A arranged near the other connecting part 11 and the second intermediate connection part 31C third closest to the other end β are connected to shorten the length of the length-adjustable air duct body 1 by 1500 mm. In this case, as shown by the dotted line in the figure, a part of the length-adjustable air duct body 1 that is left over due to the shortening protrudes about 490 mm into the other connected air duct body.
2(d) shows a case where the first intermediate connection part 30A arranged near the other connecting part 11 and the second intermediate connection part 31D fourth closest to the other end β are connected to shorten the length of the length-adjustable air duct body 1 by 2000 mm. In this case, as shown by the dotted line in the figure, a part of the length-adjustable air duct body 1 that is left over due to the shortening protrudes about 740 mm into the other connected air duct body.
2(e) shows a case where the first intermediate connection part 30A arranged near the other connecting part 11 and the second intermediate connection part 31E which is the fifth closest to the other end β are connected to shorten the length of the length-adjustable air duct body 1 by 2500 mm. In this case, as shown by the dotted line in the figure, a part of the length-adjustable air duct body 1 which is left over due to the shortening protrudes about 990 mm into the other connected air duct body.
In this way, by shortening the length of the air duct body 1 with length adjustment function, the excess part may protrude inside the air duct, but since the air duct body 1 with length adjustment function is made of a flexible material, when the blower starts to blow air, the protruding part sticks to the inner surface of the air duct due to the air flow and does not provide resistance to the air.
The thickness of the air duct body is preferably 0.25 mm to 0.8 mm, and most preferably 0.45 mm, so that the air duct body 1 with the length adjustment function can have both appropriate strength and flexibility.
このように長さ調節機能付風管体１は、現場で他の風管体との距離に合わせて適切な長さに調節して連結できるため、風管に皺や歪等が発生することを抑制して送風効率の低下を防止できる。また、一つの長さ調節機能付風管体１を異なる長さに変更可能であるため、全長の異なる長さ調整用の風管体を複数準備して現場で交換しながら長さを合わせる場合と比べて作業効率が向上する。
さらに、第一中間接続部３０及び第二中間接続部３１は、長さ調節機能付風管体１の伸縮方向に対して垂直に円周方向に亘って設けられているため、長さ調節機能付風管体１の伸縮方向（長さ方向）に対して第一中間接続部３０及び第二中間接続部３１が常に垂直な状態を維持して長さを調節できる。これにより、長さ調節機能付風管体１は、長さ調整が完了し送風を開始した後に張力で管変形して歪を生じることなく風管としての形状を精度よく保つため、送風状態を好適なものとすることができる。
In this way, the length-adjustable air duct body 1 can be connected at the site by adjusting the length to an appropriate length according to the distance to other air duct bodies, so that the occurrence of wrinkles, distortion, etc. in the air duct can be suppressed and the decrease in air blowing efficiency can be prevented. Also, since one length-adjustable air duct body 1 can be changed to different lengths, work efficiency is improved compared to the case where multiple air duct bodies with different overall lengths for length adjustment are prepared and the lengths are adjusted by replacing them at the site.
Furthermore, since the first intermediate connection part 30 and the second intermediate connection part 31 are provided in the circumferential direction perpendicular to the extension direction of the length-adjustable air duct body 1, the length can be adjusted while the first intermediate connection part 30 and the second intermediate connection part 31 are always maintained perpendicular to the extension direction (length direction) of the length-adjustable air duct body 1. As a result, the length-adjustable air duct body 1 accurately maintains its shape as an air duct without being deformed by tension and causing distortion after the length adjustment is completed and air blowing is started, and therefore the air blowing state can be made favorable.
なお、上記実施例では本発明による長さ調節機能付風管体を主に長さ調整用の風管体として用いる場合について説明したが、従来の長さ調節機能を有さない風管体と同様に風管のメインの構成部材として複数連結して用いることもできる。また、全長についても上記実施例における３０００ｍｍに限らず、例えば１００００ｍｍとするなど、任意の全長とすることが可能である。 In the above embodiment, the length-adjustable air duct of the present invention is mainly used as an air duct for adjusting the length. However, multiple air ducts can be connected together and used as the main component of the air duct, just like conventional air ducts without a length adjustment function. The total length is not limited to 3,000 mm as in the above embodiment, and can be any length, such as 10,000 mm.
１ 長さ調節機能付風管体
１０ 一方の連結部
１１ 他方の連結部
２０ 第一務歯列
２１ 第二務歯列
３０ 第一中間接続部
３１ 第二中間接続部
４０ テープ
α 一端
β 他端
1 Length-adjustable air duct 10 One connecting portion 11 The other connecting portion 20 First interlocking tooth row 21 Second interlocking tooth row 30 First intermediate connecting portion 31 Second intermediate connecting portion 40 Tape α One end β The other end
Claims (4)
前記一方の連結部と前記他方の連結部との間に、第一中間接続部と前記第一中間接続部に接続する第二中間接続部を備え、
前記第一中間接続部と前記第二中間接続部との接続により長さが縮まり、
前記第一中間接続部と前記第二中間接続部の少なくとも一方を複数備え、
前記第一中間接続部と前記第二中間接続部との接続は務歯列とスライダーを有する線ファスナーによる接続であり、
前記第二中間接続部の数が前記第一中間接続部の数よりも多く、
前記第一中間接続部が前記他方の連結部の近傍に設けられていることを特徴する長さ調節機能付風管体。 A flexible air duct having one connecting portion at one end and another connecting portion at the other end,
a first intermediate connecting portion and a second intermediate connecting portion connected to the first intermediate connecting portion are provided between the one connecting portion and the other connecting portion,
The length is shortened by the connection between the first intermediate connection part and the second intermediate connection part,
At least one of the first intermediate connecting portion and the second intermediate connecting portion is provided in plurality,
the first intermediate connection part and the second intermediate connection part are connected by a line fastener having a row of teeth and a slider,
the number of the second intermediate connecting parts is greater than the number of the first intermediate connecting parts;
A length-adjustable air duct body, characterized in that the first intermediate connection portion is provided in the vicinity of the other connecting portion .
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| JP2000320192A (en) | 1999-05-12 | 2000-11-21 | Toyo Tire & Rubber Co Ltd | Simple inflatable house with room temperature control |
| JP3110722U (en) | 2005-04-01 | 2005-06-30 | 有限会社ワンダワールド | Flexible duct with storage bag, flexible duct, and storage bag |
| JP2007315079A (en) | 2006-05-26 | 2007-12-06 | Taisei Corp | Flexible tube and fluid transport structure |
| JP2008096086A (en) | 2006-10-16 | 2008-04-24 | Ootsuka:Kk | Air-conditioning air blowout device |
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| JP2009101058A (en) | 2007-10-25 | 2009-05-14 | Yumiko Saiki | Handbag |
| JP2011007490A (en) | 2010-10-04 | 2011-01-13 | Shin Fuji Kucho:Kk | Base isolation duct |
| JP6665261B1 (en) | 2018-11-28 | 2020-03-13 | 株式会社流機エンジニアリング | Telescopic duct |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4933682Y1 (en) * | 1969-12-25 | 1974-09-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000320192A (en) | 1999-05-12 | 2000-11-21 | Toyo Tire & Rubber Co Ltd | Simple inflatable house with room temperature control |
| JP3110722U (en) | 2005-04-01 | 2005-06-30 | 有限会社ワンダワールド | Flexible duct with storage bag, flexible duct, and storage bag |
| JP2007315079A (en) | 2006-05-26 | 2007-12-06 | Taisei Corp | Flexible tube and fluid transport structure |
| JP2008096086A (en) | 2006-10-16 | 2008-04-24 | Ootsuka:Kk | Air-conditioning air blowout device |
| JP2009101058A (en) | 2007-10-25 | 2009-05-14 | Yumiko Saiki | Handbag |
| JP3144026U (en) | 2008-06-02 | 2008-08-14 | 株式会社アットファースト | Portable bottle case |
| JP2011007490A (en) | 2010-10-04 | 2011-01-13 | Shin Fuji Kucho:Kk | Base isolation duct |
| JP6665261B1 (en) | 2018-11-28 | 2020-03-13 | 株式会社流機エンジニアリング | Telescopic duct |
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