JP2019207066A

JP2019207066A - Chimney

Info

Publication number: JP2019207066A
Application number: JP2018102252A
Authority: JP
Inventors: 正己金森; Masami Kanamori; 英明谷岡; Hideaki Tanioka; 靖之村山; Yasuyuki Murayama
Original assignee: SHINGU SHOKO KK
Current assignee: SHINGU SHOKO KK
Priority date: 2018-05-29
Filing date: 2018-05-29
Publication date: 2019-12-05

Abstract

To provide a chimney capable of improving the beauty of appearance.SOLUTION: A chimney comprises: a plurality of cylindrical members 2A, 2B; and a fastening member 3 wound around a connecting part 20 of a plurality of cylindrical members formed by screwing a male screw part 4 provided in one cylindrical member 2A with a female screw part 6 provided in the other cylindrical member 2B. The connecting part is provided radially inward with respect to an outer surface 22 of the cylindrical member. According to this, in a state where the fastening member is wound around the connecting part, as in the prior art, compared to the form in which a fastening ring projects from the outer surface of the cylindrical body, the beauty of appearance can be improved.SELECTED DRAWING: Figure 8

Description

本発明は、煙突体に関する。 The present invention relates to a chimney.

従来、暖炉等の煙を屋外に導くためのものであり、複数の筒体（筒部材）を連続的に接続することにより、所定長さになるように複数の筒体が接続された煙突（煙突体）が開示されている（例えば、特許文献１参照）。 Conventionally, a chimney in which a plurality of cylinders (tube members) are connected to each other so as to have a predetermined length by continuously connecting a plurality of cylinders (cylinder members). (Chimney) is disclosed (for example, see Patent Document 1).

特許文献１に記載の従来の煙突は、複数の筒体と、複数の筒体が接続された接続部を覆う締付環と、を有して構成されている。 The conventional chimney described in Patent Literature 1 includes a plurality of cylinders and a fastening ring that covers a connection portion to which the plurality of cylinders are connected.

複数の筐体のうち、一方の筐体の上端部には、雄側嵌合筒部が形成されている。複数の筐体のうち、他方の筐体の下端部には、雄側嵌合筒部を挿入させる雌側嵌合筒部が形成されている。雌側嵌合筒部には、雄側嵌合筒部に向けて突出形成された係合突起が設けられ、雄側嵌合筒部には、係合突起を係合させる係合溝が設けられている。さらに、各筐体は、雄側嵌合筒部の基端部の全周に延在形成された上側突隆部と、他方の筐体の係合突起が一方の筐体の係合溝に係合した際に、上側突隆部に当接する下側突隆部と、を有している。上側突隆部及び下側突隆部は、それぞれ、筐体の外面から突出して設けられている。他方の筐体の係合突起が、一方の筐体の係合溝に係合し、上側突隆部及び下側突隆部が当接されることにより、接続部が構成される。 A male side fitting cylinder part is formed in the upper end part of one case among a plurality of cases. The female side fitting cylinder part which inserts a male side fitting cylinder part is formed in the lower end part of the other housing | casing among several housings. The female fitting tube portion is provided with an engaging protrusion that projects toward the male fitting tube portion, and the male fitting tube portion is provided with an engaging groove for engaging the engaging protrusion. It has been. Furthermore, each housing has an upper ridge formed extending around the entire circumference of the base end portion of the male fitting tube portion, and an engaging protrusion of the other housing in the engaging groove of one housing. A lower ridge that contacts the upper ridge when engaged. The upper ridge and the lower ridge are provided so as to protrude from the outer surface of the housing. The engaging projection of the other casing engages with the engaging groove of the one casing, and the upper protruding portion and the lower protruding portion are brought into contact with each other, whereby the connecting portion is configured.

締付環は、これらの上側突隆部及び下側突隆部を覆いつつ、これら上側突隆部及び下側突隆部をその両端部で上下に挟み込むように巻き付けられる。このような締付環により、複数の筐体の接続状態が維持される。 The tightening ring is wound around the upper and lower ridges so as to sandwich the upper and lower ridges vertically at both ends thereof. Such a tightening ring maintains the connection state of the plurality of housings.

特開２００４−７７０４６号公報JP 2004-77046 A

このような従来の煙突にあっては、上側突隆部及び下側突隆部が、筐体の外面から突出して設けられ、締付環も筐体の外面から突出して設けられているから、締付環が出っ張りとなって、外観の美しさが得られ難かった。 In such a conventional chimney, the upper ridge and the lower ridge are provided to protrude from the outer surface of the housing, and the fastening ring is also provided to protrude from the outer surface of the housing. The clamp ring protruded and it was difficult to obtain a beautiful appearance.

本発明の目的は、外観の美しさの向上を図った煙突体を提供することにある。 The objective of this invention is providing the chimney which aimed at the improvement of the beauty of an external appearance.

本発明は、複数の筒部材と、一つの前記筒部材に設けられた雄ねじ部が、他の前記筒部材に設けられた雌ねじ部に螺合されることで構成された前記複数の筒部材の連結部に巻かれる締付け部材と、を備え、前記連結部が、前記筒部材の外面より径方向の内側に設けられていることを特徴とする。 The present invention provides a plurality of cylindrical members and a plurality of cylindrical members configured by screwing a male screw portion provided in one cylindrical member with a female screw portion provided in another cylindrical member. A tightening member wound around the connecting portion, wherein the connecting portion is provided on the inner side in the radial direction from the outer surface of the cylindrical member.

以上のような本発明によれば、締付け部材が連結部に巻かれた状態で、締付け部材の外面及び筒部材の外面が同一面にある、または、締付け部材が連結部に巻かれた状態で、締付け部材の外面より筒部材の外面が径方向の内側に設けられていることにより、従来技術の如く、締付環が筒体の外面から出張った形態に比して、外観の美しさを向上させることができる。 According to the present invention as described above, the outer surface of the tightening member and the outer surface of the tubular member are on the same surface in the state where the tightening member is wound around the connecting portion, or the state where the tightening member is wound around the connecting portion. The outer surface of the cylindrical member is provided radially inward from the outer surface of the tightening member, so that the appearance of the outer ring can be improved as compared to the case in which the tightening ring travels from the outer surface of the cylindrical body as in the prior art. Can be improved.

また、煙突体は、締付け部材が巻かれる前の状態で、連結部は、筒部材の外面より径方向の内側に設けられている。ここで、煙突体の組立てる際、締付け部材が連結部に巻かれる前に、連結された複数の筒部材を取付け部材に挿入し、連結部を跨ぐように複数の筒部材を取付け部材に対して移動させる場合があるが、連結部が、筒部材の外面より径方向の内側にあることで、取付け部材が連結部に引っ掛からずにスムーズに移動されるから、煙突体の組立て作業を阻害しないようにできる。 Further, the chimney is in a state before the tightening member is wound, and the connecting portion is provided on the inner side in the radial direction from the outer surface of the cylindrical member. Here, when the chimney is assembled, before the tightening member is wound around the connecting portion, the plurality of connected cylindrical members are inserted into the mounting member, and the plurality of cylindrical members are attached to the mounting member so as to straddle the connecting portion. It may be moved, but the connecting part is located on the inner side in the radial direction from the outer surface of the cylindrical member, so that the mounting member is smoothly moved without being caught by the connecting part, so that the assembly work of the chimney is not hindered. Can be.

また、前記締付け部材が前記連結部に巻かれた状態で、前記締付け部材の外面及び前記筒部材の外面が同一面にある、または、前記締付け部材が前記連結部に巻かれた状態で、前記締付け部材の外面より前記筒部材の外面が径方向の内側に設けられていることが好ましい。これによれば、外観の美しさを向上させることができる。 In the state where the tightening member is wound around the connecting portion, the outer surface of the tightening member and the outer surface of the cylindrical member are on the same surface, or the tightening member is wound around the connecting portion, It is preferable that the outer surface of the cylindrical member is provided on the inner side in the radial direction from the outer surface of the tightening member. According to this, the beauty of the appearance can be improved.

また、前記雄ねじ部は、前記筒部材の外面より径方向の内側に位置する雄側凹み部と、該雄側凹み部より前記雄ねじ部の先端側に連続されるとともにＵ字状に折れ曲がって径方向の外側に突出して設けられた雄側突条部と、を有し、前記雌ねじ部は、前記筒部材の外面より径方向の内側に位置する雌側凹み部と、該雌側凹み部より前記先端から離れた基端側に連続されるとともにＵ字状に折れ曲がって径方向の外側に突出して設けられた雌側突条部と、を有し、前記締付け部材が、前記筒部材の外面と同一面に位置する締付け部本体と、該締付け部本体の両端に連続されるとともに径方向の内側に折れ曲がった一対の折曲げ部と、を有してＣ字状に形成され、前記一対の折曲げ部のうち一方が、前記雄側凹み部に当接され、一対の折曲げ部のうち他方が、前記雌側凹み部に当接されることが好ましい。 The male threaded portion is continuous with the male side recessed portion located radially inward from the outer surface of the cylindrical member, and is continuous with the distal end side of the male threaded portion from the male side recessed portion and is bent in a U shape to have a diameter. A male-side protrusion that protrudes outward in the direction, and the female screw portion includes a female-side recess that is positioned radially inward from the outer surface of the cylindrical member, and the female-side recess. A female-side ridge that is continuous to the proximal side away from the distal end and bent in a U shape and protrudes radially outward, and the fastening member is an outer surface of the cylindrical member And a pair of bent portions that are continuous with both ends of the tightening portion main body and bent inward in the radial direction, and are formed in a C shape, One of the bent portions is brought into contact with the male recess, and the pair of bent portions Chi the other, are preferably abutting on the female side recessed portion.

即ち、一対の折曲げ部のうち一方が、雄側凹み部に当接され、一対の折曲げ部のうち他方が、雌側凹み部に当接されることで、摩擦により、雄ねじ部及び雌ねじ部のうち一方の他方に対する螺合反対方向（緩み方向）への移動が抑制される。ここで、万一、雄ねじ部と雌ねじ部との螺合が解かれたとしても、雄側突条部が一対の折曲げ部のうち一方に当接され、雌側突条部が一対の折曲げ部のうち他方に当接されることで、複数の筒部材のうち、下方に位置する他方の筒部材の上方に位置する一方の筒部材に対する脱落が抑制される。 That is, one of the pair of bent portions is brought into contact with the male-side recessed portion, and the other of the pair of bent portions is brought into contact with the female-side recessed portion, whereby the male screw portion and the female screw are caused by friction. Movement in the direction opposite to the screwing (relaxation direction) with respect to the other of the parts is suppressed. Here, even if the male screw part and the female screw part are unscrewed, the male side ridge part is brought into contact with one of the pair of bent parts, and the female side ridge part is a pair of folded parts. By coming into contact with the other of the bent portions, dropping out of one of the plurality of tubular members with respect to one tubular member located above the other tubular member located below is suppressed.

本発明の煙突体によれば、外観の美しさの向上を図ることができる。 According to the chimney of the present invention, it is possible to improve the appearance.

本発明の一実施の形態の煙突体を含んだ暖房システムを示す図であり、（Ａ）は、斜視図であり、（Ｂ）は、背面図であり、（Ｃ）は、側面図であり、（Ｄ）は、正面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the heating system containing the chimney body of one embodiment of this invention, (A) is a perspective view, (B) is a rear view, (C) is a side view. , (D) is a front view. 前記煙突体が壁部に取り付けられた状態を示す斜視図である。It is a perspective view which shows the state in which the said chimney body was attached to the wall part. 前記煙突体の分解斜視図である。It is a disassembled perspective view of the said chimney body. 前記煙突体を構成する取付け部材の分解斜視図である。It is a disassembled perspective view of the attachment member which comprises the said chimney body. 前記煙突体を構成する筒部材の一部を切り欠いた側面図である。It is the side view which notched some cylinder members which comprise the said chimney. 図５に示された筒部材の要部を拡大して示す図である。It is a figure which expands and shows the principal part of the cylinder member shown by FIG. 前記煙突体を構成する雄ねじ部及び雌ねじ部の一部断面を示す斜視図である。It is a perspective view which shows the partial cross section of the external thread part and internal thread part which comprise the said chimney body. 前記雄ねじ部及び前記雌ねじ部が螺合された状態を示す断面図である。It is sectional drawing which shows the state in which the said external thread part and the said internal thread part were screwed together. 前記雄ねじ部及び前記雌ねじ部が螺合された状態の一部断面を示す斜視図である。It is a perspective view which shows the partial cross section of the state in which the said external thread part and the internal thread part were screwed together. 前記雄ねじ部及び前記雌ねじ部が螺合されて、２個の筒部材が連結した状態を示す斜視図である。It is a perspective view which shows the state in which the said external thread part and the said internal thread part were screwed together, and the two cylindrical members were connected. 図１０に示された２個の筒部材が取付け部材を介して壁部に取り付けられた状態を示す図である。It is a figure which shows the state by which the two cylinder members shown by FIG. 10 were attached to the wall part via the attachment member. 図１１に示された２個の筒部材にロッキングバンドが取り付けられた状態を示す図である。It is a figure which shows the state by which the locking band was attached to the two cylindrical members shown by FIG.

以下、本発明の一実施の形態に係る煙突体を有する暖房システムについて図１〜図１２を参照して説明する。この暖房システムは、家屋内における暖房のために用いられるものである。暖房システムは、図１、図２に示すように、燃料を燃焼させるための燃焼室１０と、燃料の燃焼に必要な空気を燃焼室１０の内部に取り込む不図示の給気口と、燃焼室１０において生じた煙やガスを家屋外に排出するために煙を通過させる直線状の煙突体１と、家屋内外を仕切る壁部Ｗに煙突体１を挿入支持して取り付ける取付け部材９と、を有して構成されている。なお、本実施形態の煙突体１は、直線状に設けられているが、燃焼室１０の設置場所に応じて適宜屈曲されていてもよい。 Hereinafter, a heating system having a chimney according to an embodiment of the present invention will be described with reference to FIGS. This heating system is used for heating in a house. As shown in FIGS. 1 and 2, the heating system includes a combustion chamber 10 for burning fuel, an air supply port (not shown) that takes air necessary for fuel combustion into the combustion chamber 10, and a combustion chamber. A linear chimney 1 that allows smoke to pass through in order to discharge the smoke and gas generated in 10 to the outside of the house, and a mounting member 9 that is inserted and supported by the wall part W that partitions the outside of the house. It is configured. In addition, although the chimney body 1 of this embodiment is provided in linear form, according to the installation place of the combustion chamber 10, you may be bent suitably.

煙突体１は、図３、図１０に示すように、複数（図示例では２個）の筒部材２Ａ、２Ｂと、２個の筒部材２Ａ、２Ｂの連結部２０（図１０に示す）に巻かれるロッキングバンド３（締付け部材）と、を有して構成されている。本実施形態では、図３に示すように、２個の筒部材２Ａ、２Ｂは、略同一構造乃至略同一機能を有して構成されている。２個の筒部材２Ａ、２Ｂのうち、上方に位置する一方を「上側筒部材２Ａ」と記し、下方に位置する他方を「下側筒部材２Ｂ」と記す場合がある。下側筒部材２Ｂの上端部には、雄ねじ部４が設けられ、上側筒部材２Ａの下端部には、雄ねじ部４を螺合させる雌ねじ部６が設けられている。なお、本実施形態において、「螺合」とは、雄ねじ部４の（後述する）雄突起部５と雌ねじ部６の（後述する）雌突起部７が係合することと同義であり、雄突起部５に雌突起部７が弾性的に当接した状態のことである。また、雌ねじ部６は雄ねじ部４に対して、上から見て時計回りに回転されることで螺合される。また、上から見て時計回りの方向を「螺合方向Ｒ（図３に示す）」と記す場合がある。雄ねじ部４に雌ねじ部６が螺合されることで２個の筒部材２Ａ、２Ｂが連結されて連結部２０が形成される。即ち、上側筒部材２Ａ及び下側筒部材２Ｂは連結部２０で連結される。また、本実施形態では、鉛直方向を矢印Ｙで示し、上方を矢印Ｙ１で示し、下方を矢印Ｙ２で示す。 As shown in FIGS. 3 and 10, the chimney body 1 includes a plurality (two in the illustrated example) of cylindrical members 2A and 2B and a connecting portion 20 (shown in FIG. 10) of the two cylindrical members 2A and 2B. And a locking band 3 (tightening member) to be wound. In the present embodiment, as shown in FIG. 3, the two cylindrical members 2 A and 2 B are configured to have substantially the same structure or substantially the same function. Of the two cylindrical members 2A, 2B, one located above may be referred to as “upper cylindrical member 2A” and the other located below may be referred to as “lower cylindrical member 2B”. A male screw portion 4 is provided at the upper end portion of the lower cylindrical member 2B, and a female screw portion 6 for screwing the male screw portion 4 is provided at the lower end portion of the upper cylindrical member 2A. In the present embodiment, “screwing” is synonymous with the engagement of a male protrusion 5 (described later) of the male screw portion 4 and a female protrusion 7 (described later) of the female screw portion 6. This is a state in which the female protrusion 7 is in elastic contact with the protrusion 5. The female screw portion 6 is screwed to the male screw portion 4 by being rotated clockwise as viewed from above. Further, the clockwise direction as viewed from above may be referred to as “screwing direction R (shown in FIG. 3)”. When the female screw portion 6 is screwed into the male screw portion 4, the two cylindrical members 2A and 2B are connected to form the connecting portion 20. That is, the upper cylindrical member 2A and the lower cylindrical member 2B are connected by the connecting portion 20. In the present embodiment, the vertical direction is indicated by an arrow Y, the upper side is indicated by an arrow Y1, and the lower side is indicated by an arrow Y2.

各筒部材２Ａ、２Ｂは、図５、図６に示すように、筒部本体２１と、筒部本体２１の上端部に設けられた雄突起部５を有する雄ねじ部４と、筒部本体２１の下端部に設けられた雌突起部７を有する雌ねじ部６と、を有して構成されている。 As shown in FIGS. 5 and 6, each of the cylindrical members 2 A and 2 B includes a cylindrical main body 21, a male screw portion 4 having a male protrusion 5 provided at the upper end of the cylindrical main body 21, and a cylindrical main body 21. And a female screw portion 6 having a female projection portion 7 provided at the lower end portion thereof.

筒部本体２１は、図７に示すように、円筒状の外側筒部２２（筒部材の外面）と、外側筒部２２に内挿される円筒状の内側筒部２３と、外側筒部２２と内側筒部２３との間に設けられる不図示の断熱材と、を有して構成されている。内側筒部２３は、第１内側筒部２４と、上側筒部材２Ａの第１内側筒部２４を内挿可能な第２内側筒部２５と、を有して構成されている。外側筒部２２、第１内側筒部２４、及び第２内側筒部２５は、同軸に形成されている。第２内側筒部２５は、第１内側筒部２４の上端部に連続して設けられている。第２内側筒部２５の内径寸法は、第１内側筒部２４の内径寸法より、第１内側筒部２４の板厚寸法分だけ大きくなるように形成されている。外側筒部２２の上端（上端部２２Ａ）は、第１内側筒部２４と第２内側筒部２５の境界部より僅かに下方に位置している。また、外側筒部２２の下端（下端部２２Ｂ）は、第１内側筒部２４の下端より僅かに下方に位置している。 As shown in FIG. 7, the cylinder body 21 includes a cylindrical outer cylinder 22 (an outer surface of the cylinder member), a cylindrical inner cylinder 23 inserted into the outer cylinder 22, and an outer cylinder 22. And a heat insulating material (not shown) provided between the inner cylinder portion 23 and the inner cylinder portion 23. The inner cylinder part 23 includes a first inner cylinder part 24 and a second inner cylinder part 25 into which the first inner cylinder part 24 of the upper cylinder member 2A can be inserted. The outer cylinder part 22, the first inner cylinder part 24, and the second inner cylinder part 25 are formed coaxially. The second inner cylinder part 25 is provided continuously to the upper end part of the first inner cylinder part 24. The inner diameter dimension of the second inner cylinder part 25 is formed to be larger than the inner diameter dimension of the first inner cylinder part 24 by the plate thickness dimension of the first inner cylinder part 24. The upper end (upper end portion 22 A) of the outer cylindrical portion 22 is positioned slightly below the boundary portion between the first inner cylindrical portion 24 and the second inner cylindrical portion 25. The lower end (lower end 22B) of the outer cylindrical portion 22 is located slightly below the lower end of the first inner cylindrical portion 24.

雄ねじ部４は、図７に示すように、外側筒部２２と内側筒部２３との径方向の間に位置し、雄ねじ部４の上端部である上側重なり部４１が、第２内側筒部２５の上端部２５Ａの外面に重なって溶接（固定）され、雄ねじ部４の下端部である下側重なり部４２が、外側筒部２２の上端部２２Ａの内面に重なって溶接（固定）されている。雄ねじ部４は、板金にプレス加工が施されることで形成されている。 As shown in FIG. 7, the male screw portion 4 is positioned between the outer cylindrical portion 22 and the inner cylindrical portion 23 in the radial direction, and the upper overlapping portion 41 that is the upper end portion of the male screw portion 4 is the second inner cylindrical portion. 25 is overlapped and welded (fixed) to the outer surface of the upper end portion 25A, and the lower overlapping portion 42, which is the lower end portion of the male screw portion 4, is overlapped and welded (fixed) to the inner surface of the upper end portion 22A of the outer cylindrical portion 22. Yes. The male screw portion 4 is formed by pressing a sheet metal.

また、雄ねじ部４は、図６、図７に示すように、円筒状の雄側カプラー部４０（雄筒状部）と、円筒状の上側重なり部４１と、雄側カプラー部４０と上側重なり部４１との間に位置する円環状の第１延在部４１Ａと、雄側カプラー部４０の下端に連続されて当該下端との境界部が径方向の外側に折れ曲がって延在する第２延在部４３と、第２延在部４３に連続されて、第２延在部４３との境界部が径方向の内側にＵ字状に折れ曲がって形成された第３延在部４４と、第３延在部４４に連続された円筒状の第４円筒部４５と、第４円筒部４５の下端との境界部が径方向の外側に折れ曲がって延在する第５延在部４６と、第５延在部４６に連続された円筒状の下側重なり部４２と、を一体に有して構成されている。さらに、雄ねじ部４には、雄側カプラー部４０の外周面（外面）に、周方向に間隔をあけて複数の雄突起部５が形成されている。 As shown in FIGS. 6 and 7, the male screw portion 4 includes a cylindrical male side coupler portion 40 (male cylindrical portion), a cylindrical upper overlapping portion 41, and a male side coupler portion 40. An annular first extending portion 41A located between the first portion 41 and the second extending portion extending continuously from the lower end of the male coupler portion 40 and being bent at the outer side in the radial direction. A third extending portion 44 formed by being bent in a U-shape at a boundary portion between the second extending portion 43 and the second extending portion 43, and a boundary portion between the second extending portion 43 and the second extending portion 43. A cylindrical fourth cylindrical portion 45 continuous to the third extending portion 44, a fifth extending portion 46 that extends by bending the boundary portion between the lower end of the fourth cylindrical portion 45 outward in the radial direction, A cylindrical lower overlapping portion 42 continuous with the five extending portions 46 is integrally formed. Further, the male screw portion 4 is formed with a plurality of male protrusions 5 on the outer peripheral surface (outer surface) of the male coupler portion 40 at intervals in the circumferential direction.

第４円筒部４５は、雄側カプラー部４０と下側重なり部４２との径方向の間に位置している。以下では、第２延在部４３と第２延在部４３に連続される第３延在部４４の一部を「雄側突条部４７」と記す場合がある。雄側突条部４７は、雄ねじ部４の全周に連続形成されている。また、第４円筒部４５、第４円筒部４５の上方に連続される第３延在部４４の一部及び、第４円筒部４５の下方に連続される第５延在部４６の一部を「雄側凹み部４８」と記す場合がある。雄側凹み部４８は、雄ねじ部４の全周に延在形成されている。 The fourth cylindrical portion 45 is located between the male coupler portion 40 and the lower overlapping portion 42 in the radial direction. Hereinafter, a part of the second extending portion 43 and the third extending portion 44 continuous to the second extending portion 43 may be referred to as a “male-side protrusion 47”. The male side protrusion 47 is continuously formed on the entire circumference of the male screw portion 4. Further, the fourth cylindrical portion 45, a part of the third extending portion 44 continuous above the fourth cylindrical portion 45, and a part of the fifth extending portion 46 continued below the fourth cylindrical portion 45. May be referred to as a “male-side recess 48”. The male side recess 48 is formed to extend around the entire circumference of the male screw portion 4.

雌ねじ部６は、図６、図７に示すように、円筒状の雌側カプラー部６０（雌筒状部）と、雌側カプラー部６０の上端に連続されて当該上端との境界部が内側に折れ曲がった円環状の雌側第１円環部６１と、雌側第１円環部６１との境界部が斜め上方に向かって折れ曲がって先端が内側筒部２３の外周面に向けて延在する雌側第１延在部６２と、を有している。さらに雌ねじ部６は、図６に示すように、雌側カプラー部６０の下端に連続されて雌側カプラー部６０との境界部が径方向の外側にＵ字状に折れ曲がって形成された断面円弧状の第１環状リブ６３と、第１環状リブ６３の下端に連続されるとともに、軸と平行に延在された円筒状の第１下端延在部６４と、を有している。 As shown in FIGS. 6 and 7, the female thread portion 6 is connected to the upper end of the cylindrical female-side coupler portion 60 (female cylindrical portion) and the female-side coupler portion 60, and the boundary portion between the upper end is on the inner side. An annular female side first annular part 61 that is bent in a bent manner and a boundary part between the female side first annular part 61 is bent obliquely upward and the tip extends toward the outer peripheral surface of the inner cylindrical part 23 And a female-side first extending portion 62. Further, as shown in FIG. 6, the female thread portion 6 is a cross-sectional circle formed by being continuous with the lower end of the female-side coupler portion 60 and having a boundary portion with the female-side coupler portion 60 bent in a U shape outward in the radial direction. An arc-shaped first annular rib 63 and a cylindrical first lower end extending portion 64 that is continuous with the lower end of the first annular rib 63 and extends in parallel with the axis are included.

雌側カプラー部６０には、図６に示すように、複数の雌突起部７が設けられている。また、雌側カプラー部６０の下端部であって、雌突起部７と第１環状リブ６３との間には、軸と平行に延在された円筒状の雌側円筒部６５が設けられている。即ち、雌側円筒部６５は、雌側カプラー部６０の一部である。第１下端延在部６４及び雌側円筒部６５は、径寸法が略同じになるように形成された円筒状に形成され、雌突起部７は、第１下端延在部６４及び雌側円筒部６５の内面から径方向の内側に突出して設けられ、第１環状リブ６３は、第１下端延在部６４及び雌側円筒部６５の外面から径方向の外側に突出して設けられている。 The female coupler 60 is provided with a plurality of female projections 7 as shown in FIG. Further, a cylindrical female side cylindrical portion 65 extending in parallel with the axis is provided at the lower end portion of the female side coupler portion 60 and between the female projection portion 7 and the first annular rib 63. Yes. That is, the female side cylindrical part 65 is a part of the female side coupler part 60. The first lower end extending portion 64 and the female side cylindrical portion 65 are formed in a cylindrical shape formed so that their diameters are substantially the same, and the female projection portion 7 is formed of the first lower end extending portion 64 and the female side cylinder. The first annular rib 63 is provided so as to protrude radially outward from the inner surface of the portion 65 and radially outward from the first lower end extending portion 64 and the outer surface of the female cylindrical portion 65.

各雌突起部７は、図６に示すように、雌側カプラー部６０の上下の中間部に、周方向に等間隔をあけて設けられている。各雌突起部７は、雌側カプラー部６０の径方向の内側に膨出して設けられている。 As shown in FIG. 6, the female protrusions 7 are provided at equal intervals in the circumferential direction at the upper and lower intermediate portions of the female coupler 60. Each female protrusion 7 is provided to bulge inward in the radial direction of the female coupler 60.

さらに雌ねじ部６は、図７に示すように、外側筒部２２の下端部２２Ｂと雌側カプラー部６０との径方向の間に位置する雌側カプラー補強部８を有している。雌側カプラー補強部８は、その上端部であって、外側筒部２２の下端部２２Ｂに重なって溶接（固定）される雌側重なり部８１と、この雌側重なり部８１の下端との境界部が折れ曲がって径方向の内側に延在される雌側第２延在部８２と、雌側第２延在部８２との境界部が折れ曲がって筒状に下方に延在される雌側第２円筒部８３と、雌側第２円筒部８３の下端に連続されて雌側第２円筒部８３との境界部が径方向の外側にＵ字状に折れ曲がって形成された断面円弧状の第２環状リブ８４と、第２環状リブ８４の下端に連続されるとともに、軸と平行に延在された円筒状の第２下端延在部８５と、を有して構成されている。雌側第２円筒部８３、第２環状リブ８４及び第２下端延在部８５は、雌側円筒部６５、第１環状リブ６３及び、第１下端延在部６４に重なって溶接（固定）されている。 Further, as shown in FIG. 7, the female screw portion 6 has a female-side coupler reinforcing portion 8 that is positioned between the lower end portion 22 B of the outer cylindrical portion 22 and the female-side coupler portion 60. The female-side coupler reinforcing portion 8 is an upper end portion of the female-side overlapping portion 81 that is welded (fixed) to the lower end portion 22B of the outer cylindrical portion 22 and a boundary between the female-side overlapping portion 81 and the lower end of the female-side overlapping portion 81. Female side second extension part 82 that is bent and extends inward in the radial direction and female side second extension part 82 that is bent and extends downward in a cylindrical shape. The second cylindrical portion 83 and the second cylindrical portion 83 are connected to the lower end of the female second cylindrical portion 83 and the boundary between the second cylindrical portion 83 and the female second cylindrical portion 83 is bent in a U shape outward in the radial direction. The second annular rib 84 includes a cylindrical second lower end extending portion 85 which is continuous with the lower end of the second annular rib 84 and extends in parallel with the shaft. The female second cylindrical portion 83, the second annular rib 84, and the second lower end extending portion 85 are overlapped with the female side cylindrical portion 65, the first annular rib 63, and the first lower end extending portion 64 and welded (fixed). Has been.

以下では、第１環状リブ６３及び第２環状リブ８４を「雌側突条部１２」と記す場合がある。雌側突条部１２は、雌ねじ部６の全周に連続形成されている。また、雌側円筒部６５及び雌側第２円筒部８３を「雌側凹み部１１」と記す場合がある。雌側凹み部１１は、雌ねじ部６の全周に延在形成されている。また、第１下端延在部６４及び第２下端延在部８５を「雌側下端部１３」と記す場合がある。 Below, the 1st annular rib 63 and the 2nd annular rib 84 may be described as "female side protrusion part 12". The female projecting ridge portion 12 is continuously formed on the entire circumference of the female screw portion 6. Further, the female side cylindrical portion 65 and the female side second cylindrical portion 83 may be referred to as “female side recessed portions 11”. The female recess 11 is formed so as to extend around the entire circumference of the female screw portion 6. Further, the first lower end extending portion 64 and the second lower end extending portion 85 may be referred to as “female side lower end portion 13”.

このような雄ねじ部４及び雌ねじ部６が螺合される際、図７、図８に示すように、雌突起部７が雄突起部５に当接する。雌ねじ部６を雄ねじ部４に対して螺合方向Ｒの奥側に移動する。これに伴って、雌突起部７が、雄突起部５の上面に沿って、螺合方向Ｒの奥側に移動する。さらに雌ねじ部６が螺合方向Ｒの奥側に移動されるに伴って、雌突起部７が螺合方向Ｒの奥側の雄突起部５の下面に当接する。この状態で、さらに雌ねじ部６が螺合方向Ｒの奥側に移動されることで、雌側下端部１３が雄ねじ部４の第２延在部４３を押圧し、雌突起部７、雌側突条部１２及び雌側下端部１３が、雄突起部５と第２延在部４３との間に押圧状態で挟持される。この際、雄側突条部４７及び雌側突条部１２は、雌側下端部１３を挟んで上下に並んで設けられている。こうして、雌突起部７及び雄突起部５が係合される。 When the male screw portion 4 and the female screw portion 6 are screwed together, the female projection portion 7 comes into contact with the male projection portion 5 as shown in FIGS. The female screw part 6 is moved to the back side in the screwing direction R with respect to the male screw part 4. Along with this, the female projecting portion 7 moves to the back side in the screwing direction R along the upper surface of the male projecting portion 5. Further, as the female screw portion 6 is moved to the back side in the screwing direction R, the female protrusion portion 7 comes into contact with the lower surface of the male protrusion portion 5 on the back side in the screwing direction R. In this state, when the female screw portion 6 is further moved to the back side in the screwing direction R, the female lower end portion 13 presses the second extending portion 43 of the male screw portion 4, and the female projection portion 7, the female side The protruding portion 12 and the female lower end portion 13 are sandwiched in a pressed state between the male protruding portion 5 and the second extending portion 43. At this time, the male-side ridge 47 and the female-side ridge 12 are provided side by side with the female-side lower end 13 interposed therebetween. Thus, the female projection 7 and the male projection 5 are engaged.

ロッキングバンド３は、図３に示すように、上側筒部材２Ａ及び下側筒部材２Ｂの連結部２０に巻かれる環状部本体３０と、環状部本体３０の一端に設けられたリング３１を有するレバー３２と、環状部本体３０の他端に設けられてリング３１が引っ掛かるフック３３と、を有して構成されている。レバー３２は、リング３１がフック３３に引っ掛けて、回動することで、リング３１を引き寄せて、上側筒部材２Ａ及び下側筒部材２Ｂの連結部２０を締め付ける。環状部本体３０は、円筒状のバンド本体３４（締付け部本体、締付け部材の外面）と、バンド本体３４の上下の端部から径方向内側に折れ曲がった一対の曲げ部３５Ａ、３５Ｂ（一対の折曲げ部）と、を有してコ字状に形成されている。ロッキングバンド３が取り付けられた状態で、図８、図９に示すように、一対の曲げ部３５Ａ、３５Ｂのうち上方の曲げ部３５Ａ（一対の折曲げ部のうち他方）は、雌ねじ部６の雌側第２円筒部８３に当接され、一対の曲げ部３５Ａ、３５Ｂのうち下方の曲げ部３５Ｂ（一対の折曲げ部のうち一方）は、雄ねじ部４の第４円筒部４５に当接されている。 As shown in FIG. 3, the rocking band 3 is a lever having an annular portion body 30 wound around the connecting portion 20 of the upper tubular member 2 A and the lower tubular member 2 B, and a ring 31 provided at one end of the annular portion body 30. 32 and a hook 33 that is provided at the other end of the annular body 30 and is hooked by the ring 31. When the ring 31 is hooked on the hook 33 and rotated, the lever 32 pulls the ring 31 and tightens the connecting portion 20 between the upper cylindrical member 2A and the lower cylindrical member 2B. The annular portion main body 30 includes a cylindrical band main body 34 (tightening portion main body, outer surface of the tightening member) and a pair of bent portions 35A and 35B (a pair of bent portions) bent radially inward from the upper and lower ends of the band main body 34. Bent portion), and is formed in a U-shape. 8 and 9, with the locking band 3 attached, the upper bent portion 35A (the other of the pair of bent portions) of the pair of bent portions 35A and 35B is the female screw portion 6. The lower bent portion 35B (one of the pair of bent portions) of the pair of bent portions 35A and 35B is in contact with the female second cylindrical portion 83, and is in contact with the fourth cylindrical portion 45 of the male screw portion 4. Has been.

この際、図８に示すように、上方の曲げ部３５Ａは、雌側突条部１２の上方に隣接する位置にあり、下方の曲げ部３５Ｂは、雄側突条部４７の下方に隣接する位置にある。また、雄ねじ４部及び雌ねじ部６のうち一方の他方に対して螺合反対方向（緩み方向）に移動した際に、下方の曲げ部３５Ｂは、雄側突条部４７が当接可能な位置にあり、上方の曲げ部３５Ａは、雌側突条部１２が当接可能な位置にある。そして、雄側突条部４７が下方の曲げ部３５に当接し、雌側突条部１２が上方の曲げ部３５Ａに当接することにより、雄ねじ部４及び雌ねじ部６の緩み方向へのさらなる移動が抑制される。ここで、万一、雄ねじ部４と雌ねじ部６との螺合が解かれたとしても、雄側突条部４７が下方の曲げ部３５に当接し、雌側突条部１２が上方の曲げ部３５Ａに当接することにより、複数の筒部材２Ａ、２Ｂのうち、下側筒部材２Ｂの上側筒部材２Ａに対する脱落が抑制される。 At this time, as shown in FIG. 8, the upper bent portion 35 A is in a position adjacent to the upper side of the female-side ridge portion 12, and the lower bent portion 35 B is adjacent to the lower side of the male-side ridge portion 47. In position. Further, when the male screw 4 part and the female screw part 6 are moved in the direction opposite to the screwing (relaxation direction) with respect to the other of the male screw part 4 and the female screw part 6, the lower bent part 35B can be brought into contact with the male protrusion 47. The upper bent portion 35A is located at a position where the female protrusion 12 can abut. Further, when the male protrusion 47 abuts on the lower bending part 35 and the female protrusion 12 abuts on the upper bending part 35A, the male screw part 4 and the female screw part 6 further move in the loosening direction. Is suppressed. Here, even if the male screw portion 4 and the female screw portion 6 are unscrewed, the male protrusion portion 47 abuts on the lower bending portion 35 and the female protrusion portion 12 is bent upward. By coming into contact with the portion 35A, the dropout of the lower cylinder member 2B with respect to the upper cylinder member 2A among the plurality of cylinder members 2A and 2B is suppressed.

取付け部材９は、図４に示すように、第１円弧部９０と、第２円弧部９１と、第１円弧部９０及び第２円弧部９１を壁部Ｗに固定する固定支持具９２と、を備えて構成されている。第１円弧部９０は、筒状部の外周面に巻かれる第１円弧部本体９３と、第１円弧部本体９３の両端で折り返された一対の第１固定片９４、９４と、を備えている。第２円弧部９１は、筒部材２Ａ、２Ｂの外周面に巻かれる第２円弧部本体９５と、第２円弧部本体９５の両端で折り返された一対の第２固定片９６、９６と、を備えている。固定支持具９２は、壁部Ｗに重ねられる支持板部９７と、支持板部９７の両端が折れ曲がって形成された一対の対向板部９８、９８と、一対の対向板部９８、９８の支持板部９７から離れた端部に形成された一対の固定片９９、９９と、を備えている。このような取付け部材９は、第１固定片９４、第２固定片９６、固定片９９の各一方同士を重ねて、ボルトＢ及びナットＮを用いて締結し、第１固定片９４、第２固定片９６、固定片９９の他方同士を重ねて、ボルトＢ及びナットＮを用いて締結し、壁部Ｗに支持板部９７を重ねてビス固定する。 As shown in FIG. 4, the attachment member 9 includes a first arc portion 90, a second arc portion 91, a fixing support 92 that fixes the first arc portion 90 and the second arc portion 91 to the wall portion W, It is configured with. The first arc portion 90 includes a first arc portion main body 93 wound around the outer peripheral surface of the tubular portion, and a pair of first fixing pieces 94 and 94 folded back at both ends of the first arc portion main body 93. Yes. The second arc portion 91 includes a second arc portion main body 95 wound around the outer peripheral surfaces of the cylindrical members 2A and 2B, and a pair of second fixing pieces 96 and 96 folded at both ends of the second arc portion main body 95. I have. The fixed support 92 includes a support plate portion 97 stacked on the wall portion W, a pair of opposed plate portions 98 and 98 formed by bending both ends of the support plate portion 97, and a support of the pair of opposed plate portions 98 and 98. And a pair of fixing pieces 99 and 99 formed at the end away from the plate portion 97. Such a mounting member 9 includes a first fixing piece 94, a second fixing piece 96, a fixing piece 99, which are overlapped with each other and fastened using bolts B and nuts N. The other of the fixed piece 96 and the fixed piece 99 is overlapped with each other and fastened with bolts B and nuts N, and the support plate portion 97 is overlapped with the wall portion W and fixed with screws.

次に、煙突体１を壁部Ｗに固定する際の手順について、図７、図９〜図１２を参照して説明する。予め、取付け部材９を組み立てて、支持板部９７を壁部Ｗに重ねてビス固定しておく。 Next, the procedure for fixing the chimney 1 to the wall W will be described with reference to FIGS. 7 and 9 to 12. The mounting member 9 is assembled in advance, and the support plate portion 97 is overlapped with the wall portion W and fixed with screws.

まず、図７に示すように、上側筒部材２Ａの雌ねじ部６を下側筒部材２Ｂの雄ねじ部４に近付ける。雌突起部７が雄突起部５に当接する。雌ねじ部６を雄ねじ部４に対して螺合方向Ｒの奥側に移動する。これに伴って、雌突起部７が、雄突起部５の上面に沿って、螺合方向Ｒの奥側に移動する。さらに、雌ねじ部６が螺合方向Ｒの奥側に移動されるに伴って、雌突起部７が螺合方向Ｒの奥側の雄突起部５の下面に当接する。この状態で、さらに雌ねじ部６が螺合方向Ｒの奥側に移動されることで、雌側下端部１３が雄ねじ部４の第２延在部４３を押圧し、雌突起部７、雌側突条部１２及び雌側下端部１３が、雄突起部５と第２延在部４３との間に押圧状態で挟持される。こうして、雌突起部７が雄突起部５に係合する。上側筒部材２Ａ及び下側筒部材２Ｂが連結されて、連結部２０が構成される。 First, as shown in FIG. 7, the female screw portion 6 of the upper cylindrical member 2A is brought close to the male screw portion 4 of the lower cylindrical member 2B. The female protrusion 7 contacts the male protrusion 5. The female screw part 6 is moved to the back side in the screwing direction R with respect to the male screw part 4. Along with this, the female projecting portion 7 moves to the back side in the screwing direction R along the upper surface of the male projecting portion 5. Further, as the female screw portion 6 is moved to the back side in the screwing direction R, the female protrusion portion 7 comes into contact with the lower surface of the male protrusion portion 5 on the back side in the screwing direction R. In this state, when the female screw portion 6 is further moved to the back side in the screwing direction R, the female lower end portion 13 presses the second extending portion 43 of the male screw portion 4, and the female projection portion 7, the female side The protruding portion 12 and the female lower end portion 13 are sandwiched in a pressed state between the male protruding portion 5 and the second extending portion 43. Thus, the female protrusion 7 is engaged with the male protrusion 5. The upper cylindrical member 2A and the lower cylindrical member 2B are connected to form the connecting portion 20.

続いて、図１１に示すように、連結された上側筒部材２Ａと下側筒部材２Ｂを取付け部材９に挿入する。この際、上側筒部材２Ａと下側筒部材２Ｂとの連結部２０が、筒部本体２１の外周面より径方向の内側に凹んで設けられているから、連結部２０を跨ぐ取付け部材９における第１円弧部９０及び第２円弧部９１の移動がスムーズに行われ、上側筒部材２Ａ及び下側筒部材２Ｂが取付け部材９に位置決めされる。最後に、図１２に示すように、ロッキングバンド３の環状部本体３０を、バンド本体３４が雌ねじ部６の環状リブ６３、８４及び雄ねじ部４の雄側突条部４７を覆う格好で連結部２０に近付ける。リング３１をフック３３に引っ掛けて、レバー３２を回動することで、環状部本体３０で連結部２０を締め付ける。上方の曲げ部３５Ａが雌側凹み部１１に当接し、下方の曲げ部３５Ｂが雄ねじ部４の雄側凹み部４８に当接する。こうして、煙突体１が完成する。 Subsequently, as shown in FIG. 11, the connected upper cylindrical member 2 A and lower cylindrical member 2 B are inserted into the attachment member 9. At this time, the connecting portion 20 between the upper cylindrical member 2A and the lower cylindrical member 2B is provided so as to be recessed inward in the radial direction from the outer peripheral surface of the cylindrical portion main body 21, and therefore, in the attachment member 9 straddling the connecting portion 20. The first arc portion 90 and the second arc portion 91 are moved smoothly, and the upper cylindrical member 2A and the lower cylindrical member 2B are positioned on the mounting member 9. Finally, as shown in FIG. 12, the annular body 30 of the rocking band 3 is connected to the annular body 63 so that the band body 34 covers the annular ribs 63 and 84 of the female thread 6 and the male protrusion 47 of the male thread 4. Approach 20 By hooking the ring 31 on the hook 33 and rotating the lever 32, the connecting portion 20 is tightened by the annular portion main body 30. The upper bent portion 35 A contacts the female side recessed portion 11, and the lower bent portion 35 B contacts the male side recessed portion 48 of the male screw portion 4. In this way, the chimney 1 is completed.

上述した実施形態によれば、下方の曲げ部３５Ｂ（一対の折曲げ部のうち一方）が、雄側凹み部４８に当接され、上方の曲げ部３５Ａ（一対の折曲げ部のうち他方）が、雌側凹み部１１に当接されることで、摩擦により、雄ねじ部４及び雌ねじ部６のうち一方の他方に対する螺合反対方向（緩み方向）への移動が抑制される。また、雄側突条部４７と雌側突条部１２が設けられていることで、雄ねじ部４及び雌ねじ部６の螺合が緩み、万一、雄ねじ部４と雌ねじ部６との螺合が解かれたとしても、雄側突条部４７が下方の曲げ部３５Ｂに当接され、雌側突条部１２が上方の曲げ部３５Ａに当接されることで、一対の折曲げ部３５Ａ、３５Ｂ間にて、雄側突条部４７及び雌側突条部１２が挟持された状態が維持されるから、筒部材２Ａ、２Ｂのうち、一方の筒部材２Ａの他方の筒部材２Ｂに対する脱落が抑制される。 According to the above-described embodiment, the lower bent portion 35B (one of the pair of bent portions) is brought into contact with the male side recessed portion 48, and the upper bent portion 35A (the other of the pair of bent portions). However, due to the contact with the female-side recess 11, the movement of the male screw portion 4 and the female screw portion 6 in the direction opposite to the screwing (relaxation direction) is suppressed by friction. Further, since the male side protrusion 47 and the female side protrusion 12 are provided, the screwing of the male screw part 4 and the female screw part 6 is loosened. Is released, the male protrusion 47 is brought into contact with the lower bending part 35B, and the female protrusion 12 is brought into contact with the upper bending part 35A. , 35B, the state in which the male protrusions 47 and the female protrusions 12 are sandwiched is maintained. Therefore, of the cylindrical members 2A and 2B, one cylindrical member 2A with respect to the other cylindrical member 2B is maintained. Dropout is suppressed.

また、ロッキングバンド３（締付け部材）が連結部２０に巻かれた状態で、バンド本体３４の外面（締付け部材の外面）及び外側筒部２２の外面（筒部材の外面）が同一面にあることで、外観の美しさを向上させることができる。 In addition, the outer surface of the band main body 34 (the outer surface of the tightening member) and the outer surface of the outer cylindrical portion 22 (the outer surface of the cylindrical member) are in the same plane in a state where the locking band 3 (tightening member) is wound around the connecting portion 20. Therefore, the beauty of the appearance can be improved.

また、煙突体１は、ロッキングバンド３（締付け部材）が巻かれる前の状態で、連結部２０は、外側筒部２２の外面（筒部材の外面）より径方向の内側に凹んだ位置に設けられている。ここで、煙突体１の組立てる際、ロッキングバンド３が連結部２０に巻かれる前に、連結された複数の筒部材２Ａ、２Ｂを取付け部材９に挿入し、連結部２０を跨ぐように複数の筒部材２Ａ、２Ｂを取付け部材９に対して移動させる場合があるが、連結部２０が、外側筒部２２の外面より径方向の内側に凹んだ位置にあることで、取付け部材９が連結部２０に引っ掛からずにスムーズに移動されるから、煙突体１の組立て作業を阻害しないようにできる。 Further, the chimney 1 is in a state before the rocking band 3 (tightening member) is wound, and the connecting portion 20 is provided at a position recessed inward in the radial direction from the outer surface of the outer cylindrical portion 22 (the outer surface of the cylindrical member). It has been. Here, when the chimney 1 is assembled, before the locking band 3 is wound around the connecting portion 20, the plurality of connected cylindrical members 2 A and 2 B are inserted into the mounting member 9, and a plurality of the connecting members 20 are straddled. Although the cylindrical members 2A and 2B may be moved with respect to the attachment member 9, the attachment member 9 is located at a position recessed inward in the radial direction from the outer surface of the outer cylinder portion 22, so that the attachment member 9 is connected to the connection portion. Since it is moved smoothly without being caught by 20, the assembly work of the chimney 1 can be prevented from being hindered.

なお、本発明は、前記実施形態に限定されるものではなく、本発明の目的が達成できる他の構成等を含み、以下に示すような変形例も本発明に含まれる。 In addition, this invention is not limited to the said embodiment, Other structures etc. which can achieve the objective of this invention are included, The modification as shown below is also contained in this invention.

即ち、前記実施形態では、ロッキングバンド３（締付け部材）が連結部２０に巻かれた状態で、バンド本体３４の外面（締付け部材の外面）及び外側筒部２２の外面（筒部材の外面）が同一面にあるが、本発明はこれに限定されるものではない。ロッキングバンド３（締付け部材）が連結部２０に巻かれた状態で、バンド本体３４の外面（締付け部材の外面）より外側筒部２２の外面（筒部材の外面）が径方向の内側に設けられていてもよい。これによれば、前記実施形態と略同様の効果が奏される。 That is, in the above-described embodiment, the outer surface of the band main body 34 (the outer surface of the tightening member) and the outer surface of the outer cylindrical portion 22 (the outer surface of the cylindrical member) are in a state where the locking band 3 (tightening member) is wound around the connecting portion 20. Although in the same plane, the present invention is not limited to this. In a state where the locking band 3 (clamping member) is wound around the connecting portion 20, the outer surface of the outer cylindrical portion 22 (outer surface of the cylindrical member) is provided on the inner side in the radial direction from the outer surface of the band main body 34 (outer surface of the clamping member). It may be. According to this, the effect substantially the same as the said embodiment is show | played.

その他、本発明を実施するための最良の構成、方法などは、以上の記載で開示されているが、本発明は、これに限定されるものではない。すなわち、本発明は、主に特定の実施形態に関して特に図示され、且つ、説明されているが、本発明の技術的思想及び、目的の範囲から逸脱することなく、以上述べた実施形態に対し、形状、材質、数量、その他の詳細な構成において、当業者が様々な変形を加えることができるものである。従って、上記に開示した形状、材質などを限定した記載は、本発明の理解を容易にするために例示的に記載したものであり、本発明を限定するものではないから、それらの形状、材質などの限定の一部、もしくは全部の限定を外した部材の名称での記載は、本発明に含まれるものである。 In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the present invention has been illustrated and described primarily with respect to particular embodiments, but with respect to the above-described embodiments without departing from the spirit and scope of the invention. Various modifications can be made by those skilled in the art in terms of shape, material, quantity, and other detailed configurations. Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

１煙突体
２Ａ、２Ｂ筒部材
３ロッキングバンド（締付け部材）
４雄ねじ部
６雌ねじ部
２０連結部
２２外側筒部（筒部材の外面）
３４バンド本体（締付け部本体、締付け部材の外面）
３５Ａ上方の曲げ部（一対の折曲げ部のうち他方）
３５Ｂ下方の曲げ部（一対の折曲げ部のうち一方）
４７雄側突条部
４８雄側凹み部
１２雌側突条部
１１雌側凹み部 DESCRIPTION OF SYMBOLS 1 Chimney body 2A, 2B Cylinder member 3 Rocking band (tightening member)
4 Male thread part 6 Female thread part 20 Connecting part 22 Outer cylinder part (outer surface of cylinder member)
34 Band body (tightening body, outer surface of tightening member)
35A Upper bent part (the other of a pair of bent parts)
35B downward bent part (one of a pair of bent parts)
47 Male ridge 48 Male dent 12 Female ridge 11 Female dent

Claims

A plurality of cylindrical members and a male thread portion provided on one of the cylindrical members are wound around a connecting portion of the plurality of cylindrical members configured by being screwed into female thread portions provided on the other cylindrical member. A tightening member to be worn,
The chimney body, wherein the connecting portion is provided on an inner side in a radial direction from an outer surface of the cylindrical member.

In a state where the tightening member is wound around the connecting portion, the outer surface of the tightening member and the outer surface of the cylindrical member are on the same surface, or
2. The chimney according to claim 1, wherein an outer surface of the cylindrical member is provided radially inward from an outer surface of the tightening member in a state where the tightening member is wound around the connecting portion.

The male threaded portion is continuous with the male side recessed portion located radially inward from the outer surface of the tubular member, and is continuous from the male recessed portion to the distal end side of the male threaded portion and is bent in a U shape so as to extend in the radial direction. A male ridge provided to protrude outward, and
The female threaded portion is continuous from the outer surface of the cylindrical member in the radial direction to the female side indented portion, and the base end side away from the distal end from the female side indented portion, and is bent in a U-shape and is A female-side ridge provided to protrude outward in the direction,
The tightening member has a tightening portion main body located on the same surface as the outer surface of the cylindrical member, and a pair of bent portions that are continuous with both ends of the tightening portion main body and are bent radially inward. Formed in a C shape,
The one of the pair of bent parts is in contact with the male side recessed part, and the other of the pair of bent parts is in contact with the female side recessed part. The chimney according to claim 2.