JP2006329290A

JP2006329290A - Pipe joining clamp

Info

Publication number: JP2006329290A
Application number: JP2005152216A
Authority: JP
Inventors: Tomohiro Yamamoto; 智宏山本; Koji Hisaka; 幸司日坂
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2005-05-25
Filing date: 2005-05-25
Publication date: 2006-12-07

Abstract

<P>PROBLEM TO BE SOLVED: To improve the workability of a pipe joining clamp. <P>SOLUTION: Two half ring portions 14, 15 are joined to each other via a hinge portion 16. The half ring portions 14, 15 have grooved portions 14a, 15a formed on the inner peripheral faces in the circumferential directions, respectively. The half ring portions 14, 15 have pawl fitting lock portions 19, 20 at the front ends, respectively. The inner peripheral faces of the two half ring portions 14, 15 are opposed to each other by bending the hinge portion 16, and a pipe side flange portion is fitted into the grooved portions 14a, 15a and the two pawl fitting lock portions 19, 20 are locked to each other in a pawl fitting state. On both sides of the hinge portion 16 in the cross direction, guide ribs 17, 17 are provided which are protruded along both side wall faces of the pipe side flange portion in the cross direction for restricting the position of the hinge portion 16 in the cross direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、配管の端部同士を結合する配管結合用のクランプに関する。 The present invention relates to a pipe coupling clamp that couples pipe ends.

従来、特許文献１には、円弧状の複数の保持溝を有するクランプ本体と、このクランプ本体の複数の保持溝の開口面を閉塞可能な大きさを持った平板状の蓋体と、このクランプ本体と蓋体とを折り曲げ可能に結合するヒンジ部とを弾性を有する樹脂で一体に成形した配管結合用のクランプが開示されている。 Conventionally, Patent Document 1 discloses a clamp body having a plurality of arc-shaped holding grooves, a flat lid body having a size capable of closing the opening surfaces of the plurality of holding grooves of the clamp body, and the clamp. There is disclosed a pipe coupling clamp in which a hinge portion that couples a main body and a lid body so as to be bendable is integrally formed of an elastic resin.

そして、クランプ本体とヒンジ部との接続部または蓋体とヒンジ部との接続部に、ヒンジ部の所定の曲率半径以下の折れ曲がりを規制するヒンジガイドを設け、これにより、ヒンジ部の割れを防止するようにしている。 A hinge guide is provided at the connecting part between the clamp body and the hinge part or the connecting part between the lid and the hinge part to regulate the bending of the hinge part below a predetermined radius of curvature, thereby preventing the hinge part from cracking. Like to do.

また、本発明者は先に「特願２００４−２２０６５２号」の先願にて、配管結合用クランプにおいて、クランプの占有スペースを縮小できるようにしたものを提案している。 Further, the present inventor has previously proposed, in the prior application of "Japanese Patent Application No. 2004-220652," a clamp for piping coupling that can reduce the occupied space of the clamp.

この先願の配管結合用クランプは、結合対象の２つの配管（後述の図１参照）の端部に径方向の外方へ突き出す凸部（フランジ部）を形成し、この凸部同士を突き合わせた状態で、配管端部相互間を結合するものである。この先願のものでは、図７、図８に示すように、２つの半リング状部１４、１５と、この２つの半リング状部１４、１５間を折り曲げ可能に結合するヒンジ部１６とを、弾性を有する樹脂で一体に成形している。 The pipe coupling clamp of the prior application forms a convex portion (flange portion) protruding outward in the radial direction at the end of two pipes to be coupled (see FIG. 1 described later), and the convex portions are butted together. In this state, the pipe ends are connected to each other. In this prior application, as shown in FIGS. 7 and 8, the two half ring-shaped portions 14 and 15 and the hinge portion 16 that joins the two half ring-shaped portions 14 and 15 so as to be bendable, It is integrally molded with an elastic resin.

２つの半リング状部１４、１５の内周面には配管端部の凸部が嵌合する溝部１４ａ、１５ａを円周方向に延びるように形成し、２つの半リング状部１４、１５の先端部には、それぞれ爪嵌合係止部１９、２０を設け、ヒンジ部１６は、厚肉部分からなる中間剛体部１６１の前後両側に薄肉部からなる折り曲げ可能な弾性変形部１６２、１６３を設ける構成になっている。 Grooves 14a and 15a into which the convex portions of the pipe end portions are fitted are formed on the inner peripheral surfaces of the two half-ring-like portions 14 and 15 so as to extend in the circumferential direction. Claw fitting locking portions 19 and 20 are provided at the front end portions, respectively, and the hinge portion 16 has bendable elastic deformable portions 162 and 163 made of thin portions on both front and rear sides of the intermediate rigid body portion 161 made of a thick portion. It is the structure to provide.

このように弾性変形部１６２、１６３を中間剛体部１６１の前後両側の２箇所に設けることにより、ヒンジ部１６の折り曲げに伴う外方側への突出量を小さくして、クランプの占有スペースの縮小を図っている。
特開２００１−１０８１５１号公報 Thus, by providing the elastically deformable portions 162 and 163 at two positions on both the front and rear sides of the intermediate rigid body portion 161, the outward protrusion amount associated with the bending of the hinge portion 16 is reduced, and the space occupied by the clamp is reduced. I am trying.
JP 2001-108151 A

ところで、本発明者は上記先願のクランプの実用化に当たって、実際に試作検討したところ、次のごとき不具合が生じることが判明した。すなわち、ヒンジ部１６における２箇所の弾性変形部１６２、１６３は、２つの半リング状部１４、１５相互を折り曲げ可能とするために容易に弾性変形するように設計する必要がある。 By the way, when the present inventor actually made a trial manufacture for the practical application of the clamp of the prior application, it was found that the following problems occur. That is, the two elastically deformable portions 162 and 163 in the hinge portion 16 need to be designed to be easily elastically deformed so that the two half ring-shaped portions 14 and 15 can be bent.

そのため、一方の半リング状部１４に、２つの配管端部の凸部を突き合わせた状態で嵌合し、その後に、他方の半リング状部１５を図８の一点鎖線矢印Ｅのように折り曲げる際に、２箇所の弾性変形部１６２、１６３の弾性変形によって、２つの半リング状部１４、１５の先端部位置が図９に示すようにクランプ幅方向にずれてしまうという不具合が生じる。この先端部位置のずれによって、爪嵌合係止部１９、２０の爪嵌合が面倒な作業となり、配管結合の作業性が悪化する。 Therefore, it fits into the one half ring-shaped part 14 in the state which faced the convex part of two piping edge parts, and bend | folds the other half ring-shaped part 15 like the dashed-dotted arrow E of FIG. In this case, the elastic deformation of the two elastic deformation portions 162 and 163 causes a problem that the tip end positions of the two half ring-shaped portions 14 and 15 are shifted in the clamp width direction as shown in FIG. Due to the displacement of the tip portion position, the claw fitting of the claw fitting locking portions 19 and 20 becomes a troublesome work, and the workability of pipe connection is deteriorated.

特許文献１においても、ヒンジガイドはヒンジ部の所定の曲率半径以下の折れ曲がりを規制するだけで、クランプ本体と蓋体の先端部位置がクランプ幅方向にずれることを規制する作用は果たすことができない。その結果、特許文献１でもクランプ本体と蓋体の先端部位置のずれが同様に発生して、爪嵌合係止部の爪嵌合が面倒な作業となり、配管結合の作業性が悪化する。 Also in Patent Document 1, the hinge guide only restricts bending of the hinge portion that is equal to or less than a predetermined radius of curvature, and cannot act to restrict displacement of the clamp body and the tip of the lid body in the clamp width direction. . As a result, even in Patent Document 1, the displacement of the positions of the clamp main body and the end of the lid similarly occurs, and the claw fitting of the claw fitting locking portion becomes troublesome work, and the workability of pipe connection is deteriorated.

本発明は、上記点に鑑みてなされたものであり、クランプによる配管結合の作業性を向上することを目的とする。 This invention is made | formed in view of the said point, and it aims at improving the workability | operativity of the piping coupling | bonding by a clamp.

上記目的を達成するため、請求項１に記載の発明では、接続対象となる第１配管（１１）および第２配管（１２）の端部にそれぞれ径方向の外方へ突き出す凸部（１１ｃ、１２ｂ）が形成されており、
前記凸部（１１ｃ、１２ｂ）を互いに突き合わせた状態で前記第１、第２配管（１１、１２）の端部間を結合する配管結合用クランプであって、
２つの半リング状部（１４、１５）と、前記２つの半リング状部（１４、１５）間を折り曲げ可能に結合するヒンジ部（１６）とを有し、
前記２つの半リング状部（１４、１５）の内周面には前記凸部（１１ｃ、１２ｂ）が嵌合する溝部（１４ａ、１５ａ）が円周方向に延びるように形成され、
前記２つの半リング状部（１４、１５）の先端部には、それぞれ爪嵌合係止部（１９、２０）が設けられており、
前記ヒンジ部（１６）を折り曲げて前記２つの半リング状部（１４、１５）の内周面を対向させることで、前記凸部（１１ｃ、１２ｂ）を前記溝部（１４ａ、１５ａ）内に嵌合するとともに、前記爪嵌合係止部（１９、２０）を爪嵌合状態にして前記２つの半リング状部（１４、１５）の先端部相互間を係止するようになっており、
更に、前記ヒンジ部（１６）の幅方向の両側部に、前記凸部（１１ｃ、１２ｂ）の幅方向の両側壁面に沿って突き出して、前記ヒンジ部（１６）の幅方向の位置を規制する位置規制手段（１７、１７、１７０、１７０）を設けたことを特徴としている。 In order to achieve the above object, in the invention described in claim 1, convex portions (11 c, 11 b) projecting radially outward at the ends of the first pipe (11) and the second pipe (12) to be connected, respectively. 12b) is formed,
A pipe coupling clamp for coupling between the ends of the first and second pipes (11, 12) in a state where the convex parts (11c, 12b) are abutted with each other;
Two half-ring-shaped portions (14, 15) and a hinge portion (16) for connecting the two half-ring-shaped portions (14, 15) in a foldable manner;
Groove portions (14a, 15a) into which the convex portions (11c, 12b) are fitted are formed on the inner peripheral surfaces of the two half ring-shaped portions (14, 15) so as to extend in the circumferential direction.
Claw fitting locking portions (19, 20) are provided at the distal ends of the two half ring-shaped portions (14, 15), respectively.
The convex portions (11c, 12b) are fitted into the groove portions (14a, 15a) by bending the hinge portion (16) so that the inner peripheral surfaces of the two half ring-shaped portions (14, 15) face each other. And the claw fitting locking portions (19, 20) are in a claw fitting state to lock the tip portions of the two half ring-shaped portions (14, 15),
Furthermore, it protrudes along the both-side wall surface of the width direction of the said convex part (11c, 12b) in the both sides of the width direction of the said hinge part (16), and the position of the width direction of the said hinge part (16) is controlled. The position control means (17, 17, 170, 170) is provided.

これによると、ヒンジ部（１６）を折り曲げて前記２つの半リング状部（１４、１５）の内周面を対向させる過程で、ヒンジ部（１６）の幅方向の両側部に位置する位置規制手段（１７、１７、１７０、１７０）が配管側凸部（１１ｃ、１２ｂ）を挟み込むように凸部（１１ｃ、１２ｂ）の幅方向両側壁面と嵌合する（図４参照）。 According to this, in the process in which the hinge part (16) is bent and the inner peripheral surfaces of the two semi-ring-like parts (14, 15) are made to face each other, the position restriction located on both sides in the width direction of the hinge part (16). The means (17, 17, 170, 170) is fitted to the both side walls in the width direction of the convex portions (11c, 12b) so as to sandwich the convex portions (11c, 12b) on the pipe side (see FIG. 4).

これによって、ヒンジ部（１６）の幅方向位置を位置規制手段により必ず正規位置に保持できる。このため、半リング状部（１４、１５）の幅方向への位置ずれを抑制できるので、２つの半リング状部（１４、１５）の爪嵌合係止部（１９、２０）を互いにクランプ幅方向の同一位置にて簡単に爪嵌合できる。従って、クランプによる配管結合の作業性を向上できる。 Thus, the position in the width direction of the hinge portion (16) can always be held at the normal position by the position restricting means. For this reason, since the position shift to the width direction of a half ring-shaped part (14,15) can be suppressed, the nail | claw fitting latching | locking part (19,20) of two half ring-shaped parts (14,15) is clamped mutually. Easy claw fitting at the same position in the width direction. Therefore, the workability of the pipe connection by the clamp can be improved.

請求項２に記載の発明では、請求項１に記載の配管結合用クランプにおいて、前記２つの半リング状部（１４、１５）、前記ヒンジ部（１６）、前記爪嵌合係止部（１９、２０）および前記位置規制手段（１７、１７、１７０、１７０）は弾性を有する樹脂で一体成形されていることを特徴とする。 According to a second aspect of the present invention, in the pipe coupling clamp according to the first aspect, the two half ring-shaped portions (14, 15), the hinge portion (16), and the claw fitting locking portion (19 20) and the position restricting means (17, 17, 170, 170) are integrally formed of an elastic resin.

これによると、クランプ全体形状を樹脂の一体成形で効率よく簡単に成形できる。 According to this, the entire shape of the clamp can be easily and efficiently formed by integral molding of resin.

請求項３に記載の発明では、請求項１または２に記載の配管結合用クランプにおいて、前記ヒンジ部（１６）は前記２つの半リング状部（１４、１５）よりも板厚が小さい薄肉部にて形成され、
前記薄肉部は前記位置規制手段（１７、１７、１７０、１７０）の形成部位および前記位置規制手段（１７、１７）の前後両側の部位にわたって形成され、
前記薄肉部のうち、前記位置規制手段（１７、１７、１７０、１７０）の形成範囲は前記位置規制手段（１７、１７、１７０、１７０）の付加により剛体部分を構成し、一方、前記位置規制手段（１７、１７、１７０、１７０）の形成範囲の前後両側部位は折り曲げ可能な弾性変形部（１８、１８）を構成することを特徴とする。 According to a third aspect of the present invention, in the pipe coupling clamp according to the first or second aspect, the hinge portion (16) is a thin portion having a smaller plate thickness than the two half ring-shaped portions (14, 15). Formed with
The thin-walled portion is formed across the formation part of the position restricting means (17, 17, 170, 170) and the parts on both the front and rear sides of the position restricting means (17, 17),
Among the thin portions, the formation range of the position restricting means (17, 17, 170, 170) constitutes a rigid part by adding the position restricting means (17, 17, 170, 170), while the position restricting means (17, 17, 170, 170) The front and rear side portions of the forming range of the means (17, 17, 170, 170) constitute a bendable elastic deformation portion (18, 18).

これによると、ヒンジ部（１６）を構成する薄肉部のうち、位置規制手段の形成範囲（薄肉部の中央部分）は剛体部分であるため、平坦な形状を安定的に維持できる。このため、他方の半リング状部（１５）を一方の半リング状部（１４）側へ移動させても、ヒンジ部（１６）が外方側へ大きく突出するように折り曲げ変形することがない（図３の２点鎖線部参照）。その結果、請求項３のヒンジ部構成によると、配管クランプ全体としての占有スペースを縮小できる効果を発揮できる。 According to this, among the thin parts constituting the hinge part (16), the formation range of the position restricting means (the central part of the thin part) is a rigid part, so that a flat shape can be stably maintained. For this reason, even if the other half ring-shaped part (15) is moved to the one half ring-shaped part (14) side, the hinge part (16) is not bent and deformed so as to largely protrude outward. (See the two-dot chain line portion in FIG. 3). As a result, according to the hinge part structure of Claim 3, the effect which can reduce the occupied space as the whole piping clamp can be exhibited.

請求項４に記載の発明では、請求項１ないし３のいずれか１つに記載の配管結合用クランプにおいて、前記幅方向両側の位置規制手段（１７、１７、１７０、１７０）相互の間隔を、前記位置規制手段（１７、１７、１７０、１７０）の根本部よりも先端部側で広くするテーパ形状（１７ａ、１７ａ）を前記位置規制手段（１７、１７、１７０、１７０）に形成することを特徴とする。 According to a fourth aspect of the present invention, in the pipe coupling clamp according to any one of the first to third aspects, the interval between the position restricting means (17, 17, 170, 170) on both sides in the width direction is The position restricting means (17, 17, 170, 170) is formed with a tapered shape (17a, 17a) that is wider on the tip side than the base part of the position restricting means (17, 17, 170, 170). Features.

これによると、幅方向両側の位置規制手段相互の間隔に多少の寸法ばらつきがあっても、テーパ形状（１７ａ、１７ａ）の案内作用によって幅方向両側の位置規制手段を配管側の凸部（１１ｃ、１２ｂ）の幅方向両側壁面の外側にスムースに嵌合させることができる。 According to this, even if there is some dimensional variation in the distance between the position restricting means on both sides in the width direction, the position restricting means on the both sides in the width direction can be changed to the convex part (11c on the pipe side) by the guiding action of the tapered shape (17a, 17a). , 12b) can be smoothly fitted to the outside of both side wall surfaces in the width direction.

請求項５に記載の発明のように、請求項１ないし４のいずれか１つに記載の配管結合用クランプにおいて、前記位置規制手段は、具体的には、前記ヒンジ部（１６）の長さ方向に連続して延びる壁形状をなすガイドリブ（１７、１７）で構成できる。 As in the fifth aspect of the invention, in the pipe coupling clamp according to any one of the first to fourth aspects, the position restricting means is specifically the length of the hinge portion (16). It can be constituted by guide ribs (17, 17) having a wall shape extending continuously in the direction.

請求項６に記載の発明のように、請求項１ないし４のいずれか１つに記載の配管結合用クランプにおいて、前記位置規制手段は、具体的には、前記ヒンジ部（１６）の長さ方向において複数に分割して突き出すピン状部材（１７０、１７０）で構成してもよい。 As in the sixth aspect of the present invention, in the pipe coupling clamp according to any one of the first to fourth aspects, the position restricting means is specifically the length of the hinge portion (16). You may comprise by the pin-shaped member (170,170) which divides | segments into plurality in the direction and protrudes.

なお、上記各手段に付した括弧内の符号は、後述する実施形態記載の具体的手段との対応関係を示す一例である。 In addition, the code | symbol in the parenthesis attached | subjected to each said means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

（第１実施形態）
図１は本実施形態によるクランプ１０を用いた配管結合部の配管軸線方向の断面図で、本実施形態のクランプ１０は車両用空調装置の暖房用熱交換器に温水（車両エンジンの冷却水）を流通するための温水配管の結合に用いられる。図２はクランプ１０単体の展開状態の正面図、図３は図２のＡ−Ａ断面図、図４は図２のＢ−Ｂ断面図で、配管クランプのヒンジ部と配管側フランジ部との配置関係を示す。 (First embodiment)
FIG. 1 is a cross-sectional view in the pipe axis direction of a pipe joint using a clamp 10 according to the present embodiment. The clamp 10 of the present embodiment is used for heating water (cooling water for a vehicle engine) in a heating heat exchanger of a vehicle air conditioner. Used to connect hot water pipes for circulation. 2 is a front view of the clamp 10 alone, FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, and FIG. 4 is a cross-sectional view taken along line BB in FIG. The arrangement relationship is shown.

第１配管１１および第２配管１２は上記温水配管を構成するもので、ともにアルミニウム合金製の金属配管である。第１配管１１は雄側配管であり、第２配管１２は先端拡管部１２ａを有する雌側配管である。第１配管１１の先端シール部１１ａは第２配管１２の拡管先端部１２ａの内側に挿入される。 The 1st piping 11 and the 2nd piping 12 comprise the said warm water piping, and are both metal piping made from an aluminum alloy. The first pipe 11 is a male pipe, and the second pipe 12 is a female pipe having a tip expanded portion 12a. The tip seal part 11 a of the first pipe 11 is inserted inside the pipe expansion tip part 12 a of the second pipe 12.

第１配管１１の先端シール部１１ａはＯリング溝１１ｂを円周方向に形成し、このＯリング溝１１ｂ内に弾性シール材としてＯリング１３を配設している。そして、第１配管１１のうち、先端シール部１１ａの根本部に凸部をなすフランジ部１１ｃが一体形成されている。このフランジ部１１ｃは、先端シール部１１ａの根本部の位置にて径方向の外方へリング状に突き出す屈曲形状からなる。第２配管１２においても、先端拡管部１２ａの先端に径方向の外方へリング状に突き出すフランジ部１２ｂが一体形成されている。 The tip seal portion 11a of the first pipe 11 forms an O-ring groove 11b in the circumferential direction, and an O-ring 13 is disposed as an elastic seal material in the O-ring groove 11b. And the flange part 11c which makes a convex part in the base part of the front-end | tip seal | sticker part 11a among the 1st piping 11 is integrally formed. The flange portion 11c has a bent shape protruding in a ring shape outward in the radial direction at the position of the root portion of the tip seal portion 11a. Also in the second pipe 12, a flange portion 12 b that protrudes radially outward in a ring shape is integrally formed at the tip of the tip expanded portion 12 a.

そして、第１配管１１の先端シール部１１ａを第２配管１２の先端拡管部１２ａ内に挿入し、第１配管１１のフランジ部１１ｃを第２配管１２のフランジ部１２ｂに当接すると、Ｏリング１３が先端拡管部１２ａの内周面とＯリング溝１１ｂの底部壁面との間で弾性的に圧縮変形して、第１、第２配管１１、１２の先端嵌合部のシール作用を発揮する。 When the distal end seal portion 11 a of the first pipe 11 is inserted into the distal end expanded portion 12 a of the second pipe 12 and the flange portion 11 c of the first pipe 11 is brought into contact with the flange portion 12 b of the second pipe 12, the O-ring 13 is elastically compressed and deformed between the inner peripheral surface of the distal end pipe expanding portion 12a and the bottom wall surface of the O-ring groove 11b, and exhibits the sealing action of the distal end fitting portions of the first and second pipes 11 and 12. .

次に、第１、第２配管１１、１２を結合するクランプ１０について述べると、クランプ１０は樹脂成形品であって、その樹脂材質としてはポリプロピレン樹脂、あるいはポリアミド樹脂等が好適である。これらの樹脂材質は、弾性（柔軟性）、耐熱性、寸法精度等の面で優れた特性を持っている。 Next, the clamp 10 that couples the first and second pipes 11 and 12 will be described. The clamp 10 is a resin molded product, and the resin material is preferably polypropylene resin or polyamide resin. These resin materials have excellent characteristics in terms of elasticity (flexibility), heat resistance, dimensional accuracy, and the like.

図２、図３に示すように、クランプ１０は、２つの半リング状部１４、１５を有し、この２つの半リング状部１４、１５間をヒンジ部１６にて折り曲げ可能に結合する構成になっている。ここで、２つの半リング状部１４、１５の内周面には溝部１４ａ、１５ａが円周方向に延びるように形成されている。 As shown in FIGS. 2 and 3, the clamp 10 has two half-ring-like portions 14 and 15, and the two half-ring-like portions 14 and 15 are connected to each other so as to be foldable by a hinge portion 16. It has become. Here, groove portions 14a and 15a are formed on the inner peripheral surfaces of the two half ring-shaped portions 14 and 15 so as to extend in the circumferential direction.

図１に示すように溝部１４ａ、１５ａの内部には前記したフランジ部１１ｃ、１２ｂが嵌合するようになっている。溝部１４ａ、１５ａの溝幅寸法は、２つのフランジ部１１ｃ、１２ｂの合計厚さ寸法とほぼ同一に設計され、溝部１４ａ、１５ａの左右両側の壁部１４ｂ、１４ｃ、１５ｂ、１５ｃにて２つのフランジ部１１ｃ、１２ｂを挟み込むようになっている。 As shown in FIG. 1, the above-mentioned flange portions 11c and 12b are fitted in the groove portions 14a and 15a. The groove width dimension of the groove parts 14a, 15a is designed to be substantially the same as the total thickness dimension of the two flange parts 11c, 12b, and two wall parts 14b, 14c, 15b, 15c on the left and right sides of the groove parts 14a, 15a The flange portions 11c and 12b are sandwiched.

ヒンジ部１６は、２つの半リング状部１４、１５よりも板厚が小さい薄肉部にて形成される。より具体的には、２つの半リング状部１４、１５の溝部１４ａ、１５ａの板厚ｔ１（図３）よりもヒンジ部１６の板厚ｔ２（図３）の方を小さくしている。例えば、板厚ｔ１＝１．５ｍｍ程度で、ヒンジ部１６の板厚ｔ２＝０．５〜１．０ｍｍ程度である。 The hinge portion 16 is formed of a thin portion having a smaller plate thickness than the two half ring-shaped portions 14 and 15. More specifically, the plate thickness t2 (FIG. 3) of the hinge portion 16 is made smaller than the plate thickness t1 (FIG. 3) of the groove portions 14a and 15a of the two half ring-shaped portions 14 and 15. For example, the plate thickness t1 is about 1.5 mm, and the plate thickness t2 of the hinge portion 16 is about 0.5 to 1.0 mm.

ヒンジ部１６の内側面において幅方向（図２の上下方向）の両側部にガイドリブ１７、１７が突出成形されている。このガイドリブ１７、１７は、ヒンジ部１６の長さ方向（図２の左右方向）に連続して延びる壁形状である。 Guide ribs 17 and 17 are projectingly formed on both side portions in the width direction (vertical direction in FIG. 2) on the inner side surface of the hinge portion 16. The guide ribs 17 and 17 have a wall shape that extends continuously in the length direction of the hinge portion 16 (left and right direction in FIG. 2).

そして、この幅方向両側のガイドリブ１７、１７の間隔は、図４に示すようにガイドリブ根本部においても２つのフランジ部１１ｃ、１２ｂの合計厚さ寸法よりも若干量大きくしてある。これにより、幅方向両側のガイドリブ１７、１７は、第１、第２配管１１、１２のフランジ部１１ｃ、１２ｂの幅方向の両側壁面の外側に沿って突き出すように配置できる。 The distance between the guide ribs 17 on both sides in the width direction is slightly larger than the total thickness dimension of the two flange portions 11c and 12b in the guide rib base portion as shown in FIG. Thereby, the guide ribs 17 and 17 on both sides in the width direction can be arranged so as to protrude along the outside of both side wall surfaces in the width direction of the flange portions 11 c and 12 b of the first and second pipes 11 and 12.

更に、幅方向両側のガイドリブ１７、１７には、その相互の間隔がガイドリブ根本部よりもガイドリブ先端部側で広くなるテーパ形状１７ａ、１７ａ（図４）が形成されている。 Further, the guide ribs 17 and 17 on both sides in the width direction are formed with tapered shapes 17a and 17a (FIG. 4) in which the distance between the guide ribs 17 and 17 is wider on the distal end side of the guide rib than the root portion of the guide rib.

本実施形態では、ガイドリブ１７、１７の突出高さｈ２（図３）は溝部１４ａ、１５ａの両側壁部１４ｂ、１４ｃ、１５ｂ、１５ｃの突出高さｈ１（図３）と同一高さに設定しており、具体的にはｈ１＝ｈ２＝１．５ｍｍに設定している。 In the present embodiment, the protruding height h2 (FIG. 3) of the guide ribs 17 and 17 is set to the same height as the protruding height h1 (FIG. 3) of the side walls 14b, 14c, 15b and 15c of the grooves 14a and 15a. Specifically, h1 = h2 = 1.5 mm is set.

ところで、ヒンジ部１６を構成する薄肉部は、ガイドリブ１７、１７の形成範囲Ｄおよびガイドリブ１７、１７の前後両側の部位にわたって形成され、この薄肉部のうち、ガイドリブ１７、１７の形成範囲Ｄはガイドリブ１７、１７の付加により剛体部分を構成する。一方、ガイドリブ１７、１７の形成範囲Ｄの前後両側部位は薄肉部のみとなるので折り曲げ可能な弾性変形部１８、１８を構成する。ガイドリブ１７、１７は、後述するようにヒンジ部１６の位置規制手段を構成する。 By the way, the thin part which comprises the hinge part 16 is formed over the site | part D of the guide ribs 17 and 17 and the site | part of the front-and-rear both sides of the guide ribs 17 and 17, The formation range D of the guide ribs 17 and 17 is a guide rib among these thin parts. The rigid body portion is formed by adding 17 and 17. On the other hand, since the front and rear side portions of the formation range D of the guide ribs 17 and 17 are only thin portions, the elastic deformation portions 18 and 18 that can be bent are formed. The guide ribs 17 and 17 constitute position restricting means for the hinge portion 16 as will be described later.

２つの半リング状部１４、１５の先端部、すなわち、２つの半リング状部１４、１５のうち、ヒンジ部１６と反対側の先端部には、それぞれ爪嵌合係止部１９、２０が設けられている。 At the tip of the two half ring-shaped portions 14, 15, that is, the tip of the two half ring-shaped portions 14, 15 on the side opposite to the hinge portion 16, there are claw fitting locking portions 19, 20 respectively. Is provided.

一方の半リング状部１４の先端部の爪嵌合係止部１９は雌側であり、他方の半リング状部１５の先端部の爪嵌合係止部２０は雄側である。つまり、後者の爪嵌合係止部２０は先端側が滑らかに細くなっている断面翼状の爪形状に形成され、前者の爪嵌合係止部１９には断面三角状の爪形状が形成されている。 The claw fitting locking portion 19 at the tip of one half ring-shaped portion 14 is on the female side, and the claw fitting locking portion 20 at the tip of the other half ring-shaped portion 15 is on the male side. In other words, the latter claw fitting locking portion 20 is formed in a wing-shaped claw shape whose tip side is smoothly narrowed, and the former claw fitting locking portion 19 is formed in a triangular claw shape in cross section. Yes.

断面翼状の爪形状からなる爪嵌合係止部２０は、爪嵌合係止部１９側の断面三角状の爪形状の奥側に挿入されて係止される。図３の左側に示す２点鎖線の爪嵌合係止部２０は爪嵌合係止部１９に係止された状態を示す。 The claw fitting locking portion 20 having a claw shape having a wing cross section is inserted and locked to the back side of the claw shape having a triangular cross section on the claw fitting locking portion 19 side. A two-dot chain line claw fitting locking portion 20 shown on the left side of FIG. 3 shows a state where the claw fitting locking portion 19 is locked.

なお、図２、図３に示すクランプ１０の全体形状、すなわち、２つの半リング状部１４、１５、ヒンジ部１６、ガイドリブ１７、１７、および爪嵌合係止部１９、２０を含むクランプ全体形状は樹脂により一体成形される。 2 and 3, that is, the entire clamp including the two half ring-shaped portions 14 and 15, the hinge portion 16, the guide ribs 17 and 17, and the claw fitting locking portions 19 and 20. The shape is integrally formed of resin.

次に、上記構成において配管結合作業を具体的に説明する。まず、クランプ１０を図２、図３に示す展開状態にしておき、この展開状態において２つの半リング状部１４、１５のうち、雌側の爪嵌合係止部１９を形成した一方の半リング状部１４側に第１、第２配管１１、１２の端部をセットする。 Next, the pipe connection work in the above configuration will be specifically described. First, the clamp 10 is set in the unfolded state shown in FIGS. 2 and 3, and in this unfolded state, of the two half ring-shaped portions 14 and 15, one half formed with the female-side claw fitting locking portion 19 is formed. End portions of the first and second pipes 11 and 12 are set on the ring-shaped portion 14 side.

具体的には、図１に示すように、雄側配管をなす第１配管１１の先端シール部１１ａを、雌側配管をなす第２配管１２の先端拡管部１２ａの内側に挿入して、第１配管１１のフランジ部１１ｃを第２配管１２のフランジ部１２ｂに当接させる。そして、この両フランジ部１１ｃ、１２ｂの当接状態を維持しながら、両フランジ部１１ｃ、１２ｂを一方の半リング状部１４の溝部１４内に嵌合する。 Specifically, as shown in FIG. 1, the end seal portion 11a of the first pipe 11 forming the male side pipe is inserted into the inside of the front end expanded portion 12a of the second pipe 12 forming the female side pipe. The flange portion 11 c of the one pipe 11 is brought into contact with the flange portion 12 b of the second pipe 12. Then, the two flange portions 11c and 12b are fitted into the groove portion 14 of the one half ring-shaped portion 14 while maintaining the contact state of the both flange portions 11c and 12b.

次に、他方の半リング状部１５に図３の矢印Ｅ方向（２つの半リング状部１４、１５を接近させる方向）の操作力を加えて、ヒンジ部１６の弾性変形部１８、１８を弾性的に折り曲げる。これにより、他方の半リング状部１５を一方の半リング状部１４の内周面と対向する位置（図３の２点鎖線位置）に向かって移動させることができる。 Next, by applying an operating force in the direction of arrow E in FIG. 3 (direction in which the two half ring-shaped portions 14 and 15 approach each other) to the other half ring-shaped portion 15, the elastic deformation portions 18 and 18 of the hinge portion 16 are moved. Bend elastically. Thereby, the other half ring-shaped part 15 can be moved toward the position (two-dot chain line position in FIG. 3) facing the inner peripheral surface of one half ring-shaped part 14.

この際に、本実施形態によると、他方の半リング状部１５の移動位置が一方の半リング状部１４に対してクランプ幅方向（図３の紙面垂直方向）にずれることを良好に抑制できる。 At this time, according to the present embodiment, it is possible to satisfactorily suppress the movement position of the other half-ring-shaped portion 15 from being shifted in the clamp width direction (perpendicular to the plane of FIG. 3) with respect to the one half-ring-shaped portion 14. .

すなわち、本実施形態では、配管側のフランジ部１１ｃ、１２ｂの幅方向の両側壁面に沿って突き出すガイドリブ１７、１７をヒンジ部１６の内側面の幅方向両側部に突出成形している。 That is, in this embodiment, the guide ribs 17 and 17 projecting along the both side wall surfaces in the width direction of the flange portions 11c and 12b on the piping side are projectingly formed on both side portions in the width direction on the inner surface of the hinge portion 16.

このため、ヒンジ部１６の弾性変形部１８、１８が折れ曲がって、他方の半リング状部１５が一方の半リング状部１４側へ移動する過程で、ヒンジ部１６の幅方向両側のガイドリブ１７、１７が必ずフランジ部１１ｃ、１２ｂの幅方向両側壁面の外側に嵌合する。 For this reason, the guide ribs 17 on both sides in the width direction of the hinge portion 16 in the process in which the elastic deformation portions 18 and 18 of the hinge portion 16 are bent and the other half ring-like portion 15 moves to the one half-ring-like portion 14 side. 17 always fits to the outside of both side walls in the width direction of the flange portions 11c and 12b.

図４はこのようなガイドリブ１７、１７とフランジ部１１ｃ、１２ｂとの嵌合関係を示すもので、ガイドリブ１７、１７がフランジ部１１ｃ、１２ｂの幅方向両側壁面を挟むように嵌合している状態を示す。このような嵌合状態ではガイドリブ１７、１７がフランジ部１１ｃ、１２ｂに当接することで、ヒンジ部１６が幅方向（図３の紙面垂直方向）に移動することを規制できる。 FIG. 4 shows such a fitting relationship between the guide ribs 17 and 17 and the flange portions 11c and 12b. The guide ribs 17 and 17 are fitted so as to sandwich both side walls of the flange portions 11c and 12b in the width direction. Indicates the state. In such a fitting state, the guide ribs 17 and 17 abut against the flange portions 11c and 12b, whereby the hinge portion 16 can be restricted from moving in the width direction (perpendicular to the plane of FIG. 3).

この結果、ヒンジ部１６の幅方向への位置ずれを抑制でき、これにより、他方の半リング状部１５が一方の半リング状部１４に対してクランプ幅方向（図３の紙面垂直方向）へずれることを抑制できる。 As a result, it is possible to suppress the displacement of the hinge portion 16 in the width direction, whereby the other half ring-shaped portion 15 is clamped in the clamp width direction (perpendicular to the paper surface of FIG. 3) with respect to the one half ring-shaped portion 14. Shifting can be suppressed.

それ故、他方の半リング状部１５を一方の半リング状部１４側へ移動させると、他方の半リング状部１５の内周面の溝部１５ａを第１、第２配管１１、１２のフランジ部１１ｃ、１２ｂに容易に嵌合させることができる。これと同時に、他方の半リング状部１５の先端部に設けられた雄側の爪嵌合係止部２０を一方の半リング状部１４の先端部に設けられた雌側の爪嵌合係止部１９の位置に容易に合致させることができる。 Therefore, when the other half ring-shaped portion 15 is moved toward the one half ring-shaped portion 14, the groove portion 15 a on the inner peripheral surface of the other half ring-shaped portion 15 is formed in the flanges of the first and second pipes 11 and 12. It can be easily fitted to the portions 11c and 12b. At the same time, the male claw fitting engagement portion 20 provided at the distal end portion of the other half ring-shaped portion 15 is replaced with the female claw fitting engagement portion provided at the distal end portion of the one half ring-shaped portion 14. It is possible to easily match the position of the stop portion 19.

これにより、他方の半リング状部１５の雄側爪嵌合係止部２０を一方の半リング状部１４の雌側爪嵌合係止部１９の奥側に容易に挿入でき、この両係止部１９、２０を爪嵌合による係止状態にすることができ、配管結合作業を終了できる。 As a result, the male claw fitting locking portion 20 of the other half ring-shaped portion 15 can be easily inserted into the back side of the female claw fitting locking portion 19 of the one half ring-shaped portion 14. The stop portions 19 and 20 can be brought into a locked state by claw fitting, and the pipe coupling work can be completed.

なお、本実施形態では、幅方向両側のガイドリブ１７、１７に、ガイドリブ１７、１７相互の間隔が、ガイドリブ根本部よりもガイドリブ先端部側で広くなるテーパ形状１７ａ、１７ａ（図４）を設けているから、ガイドリブ１７、１７相互の間隔に多少の寸法ばらつきがあっても、テーパ形状１７ａ、１７ａの案内作用によってガイドリブ１７、１７をフランジ部１１ｃ、１２ｂの幅方向両側壁面の外側にスムースに嵌合させることができる。 In this embodiment, the guide ribs 17 and 17 on both sides in the width direction are provided with tapered shapes 17a and 17a (FIG. 4) in which the distance between the guide ribs 17 and 17 is wider on the guide rib tip side than the guide rib root portion. Therefore, even if there is a slight dimensional variation in the distance between the guide ribs 17 and 17, the guide ribs 17 and 17 are smoothly fitted on the outer sides of both side walls in the width direction of the flange portions 11c and 12b by the guiding action of the tapered shapes 17a and 17a. Can be combined.

以上のようにして、本実施形態では、ヒンジ部１６、ひいては他方の半リング状部１５の幅方向への位置ずれを抑制でき、配管結合作業の作業性を向上できる。 As described above, in the present embodiment, it is possible to suppress the displacement in the width direction of the hinge portion 16, and thus the other half ring-shaped portion 15, and to improve the workability of the pipe coupling work.

ところで、本実施形態では、ヒンジ部１６を２つの半リング状部１４、１５よりも板厚が小さい薄肉部にて形成し、この薄肉部のうち、ガイドリブ１７、１７の形成範囲Ｄはガイドリブ１７、１７の付加により剛体部分を構成する。一方、薄肉部のうち、ガイドリブ１７、１７の形成範囲Ｄの前後両側部位に折り曲げ可能な弾性変形部１８、１８を構成している。 By the way, in this embodiment, the hinge part 16 is formed in the thin part whose plate | board thickness is smaller than the two half ring-shaped parts 14 and 15, The formation range D of the guide ribs 17 and 17 is guide rib 17 among this thin part. , 17 to form a rigid part. On the other hand, among the thin portions, elastically deformable portions 18 and 18 that can be bent are formed at both front and rear portions of the formation range D of the guide ribs 17 and 17.

このようなヒンジ部構成によると、ガイドリブ１７、１７の形成範囲（ヒンジ部長さ方向の中央部分）Ｄは剛体部分であるため、図３の２点鎖線で示すように他方の半リング状部１５の移動後でも平坦な形状を安定的に維持できる。このため、ヒンジ部１６が外方側へ大きく突出するように折り曲げ変形することがない。それ故、本実施形態のヒンジ部構成によると、配管クランプ全体としての占有スペースを縮小できる利点を有している。 According to such a hinge part configuration, the formation range (the center part in the hinge part length direction) D of the guide ribs 17 and 17 is a rigid part, so that the other half ring-like part 15 as shown by a two-dot chain line in FIG. Even after the movement, the flat shape can be stably maintained. For this reason, the hinge part 16 is not bent and deformed so as to largely protrude outward. Therefore, according to the hinge part structure of this embodiment, it has the advantage that the occupation space as the whole piping clamp can be reduced.

（第２実施形態）
第１実施形態では、ヒンジ部１６に、その長さ方向（図２の左右方向）に連続して延びる壁形状からなるガイドリブ１７、１７を設け、このガイドリブ１７、１７によってヒンジ部１６の位置規制手段を構成しているが、第２実施形態では、図５、図６に示すように、ヒンジ部１６の長さ方向において複数に分割して突き出すピン状部材１７０、１７０を設け、この複数のピン状部材１７０、１７０によってヒンジ部１６の位置規制手段を構成している。 (Second Embodiment)
In the first embodiment, the hinge portion 16 is provided with guide ribs 17 and 17 each having a wall shape extending continuously in the length direction (left and right direction in FIG. 2), and the guide ribs 17 and 17 restrict the position of the hinge portion 16. In the second embodiment, as shown in FIGS. 5 and 6, there are provided pin-like members 170, 170 that project in a divided manner in the length direction of the hinge portion 16, The pin-shaped members 170 and 170 constitute a position restricting means for the hinge portion 16.

より具体的には、ヒンジ部１６の幅方向の両側部にそれぞれ複数のピン状部材１７０、１７０を一体成形し、この幅方向両側部の複数のピン状部材１７０、１７０を配管側フランジ部１１ｃ、１２ｂの幅方向両側壁面の外側に嵌合させる。このような嵌合状態の設定によりヒンジ部１６の幅方向への位置ずれを抑制して、第１実施形態と同様の作用効果を発揮できる。 More specifically, a plurality of pin-shaped members 170, 170 are integrally formed on both side portions in the width direction of the hinge portion 16, and the plurality of pin-shaped members 170, 170 on both side portions in the width direction are connected to the pipe-side flange portion 11c. , 12b are fitted to the outside of both side walls in the width direction. By setting the fitting state as described above, the positional deviation in the width direction of the hinge portion 16 can be suppressed, and the same effect as the first embodiment can be exhibited.

なお、第２実施形態においても、ピン状部材１７０、１７０に第１実施形態のテーパ形状１７ａ、１７ａと同様のテーパ形状を設けて、ピン状部材１７０、１７０が配管側フランジ部１１ｃ、１２ｂの幅方向両側壁面の外側にスムースに嵌合するようにしてもよい。 Also in the second embodiment, the pin-shaped members 170 and 170 are provided with the same tapered shape as the taper shapes 17a and 17a of the first embodiment, and the pin-shaped members 170 and 170 are connected to the pipe-side flange portions 11c and 12b. You may make it fit smoothly on the outer side of both wall surfaces in the width direction.

（他の実施形態）
なお、第１実施形態では、結合対象の第１、第２配管１１、１２が水配管である場合について述べたが、水以外の種々な流体を流通する配管の結合に本発明は広く適用できるものである。 (Other embodiments)
In the first embodiment, the case where the first and second pipes 11 and 12 to be joined are water pipes has been described, but the present invention can be widely applied to the joining of pipes through which various fluids other than water flow. Is.

本発明の第１実施形態における配管結合状態を示す配管軸線方向の断面図である。It is sectional drawing of the pipe axis direction which shows the pipe joint state in 1st Embodiment of this invention. 本発明の第１実施形態による配管クランプの展開状態を示す正面図である。It is a front view which shows the expansion | deployment state of the piping clamp by 1st Embodiment of this invention. 図２のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図２のＢ−Ｂ断面図で、配管クランプのヒンジ部と配管側フランジ部との配置関係を示す。FIG. 2 is a cross-sectional view taken along the line B-B in FIG. 2, showing an arrangement relationship between a hinge part of a pipe clamp and a pipe side flange part. 本発明の第２実施形態による配管クランプの展開状態を示す正面図である。It is a front view which shows the expansion | deployment state of the piping clamp by 2nd Embodiment of this invention. 図５のＣ−Ｃ断面図である。It is CC sectional drawing of FIG. 先願による配管クランプの展開状態を示す側面図である。It is a side view which shows the expansion | deployment state of the piping clamp by a prior application. 図７の断面図である。It is sectional drawing of FIG. 先願による配管クランプの不具合を示す斜視図ある。It is a perspective view which shows the malfunction of the piping clamp by a prior application.

Explanation of symbols

１１、１２…第１、第２配管、１４、１５…半リング状部、１４ａ、１５ａ…溝部、
１６…ヒンジ部、１７…ガイドリブ（位置規制手段）、１７ａ…テーパ形状、
１８…弾性変形部、１９、２０…爪嵌合係止部、１７０…ピン状部材（位置規制手段）。 11, 12 ... 1st, 2nd piping, 14, 15 ... Semi-ring shaped part, 14a, 15a ... Groove part,
16 ... Hinge part, 17 ... Guide rib (position restricting means), 17a ... Tapered shape,
18 ... elastic deformation part, 19, 20 ... claw fitting locking part, 170 ... pin-shaped member (position regulating means).

Claims

Convex portions (11c, 12b) protruding outward in the radial direction are formed at the ends of the first pipe (11) and the second pipe (12) to be connected,
A pipe coupling clamp for coupling between the ends of the first and second pipes (11, 12) in a state where the convex parts (11c, 12b) are abutted with each other;
Two half-ring-shaped portions (14, 15) and a hinge portion (16) for connecting the two half-ring-shaped portions (14, 15) in a foldable manner;
Groove portions (14a, 15a) into which the convex portions (11c, 12b) are fitted are formed on the inner peripheral surfaces of the two half ring-shaped portions (14, 15) so as to extend in the circumferential direction.
Claw fitting locking portions (19, 20) are provided at the distal ends of the two half ring-shaped portions (14, 15), respectively.
The convex portions (11c, 12b) are fitted into the groove portions (14a, 15a) by bending the hinge portion (16) so that the inner peripheral surfaces of the two half ring-shaped portions (14, 15) face each other. And the claw fitting locking portions (19, 20) are in a claw fitting state to lock the tip portions of the two half ring-shaped portions (14, 15),
Furthermore, it protrudes along the both-side wall surface of the width direction of the said convex part (11c, 12b) in the both sides of the width direction of the said hinge part (16), and the position of the width direction of the said hinge part (16) is controlled. A pipe coupling clamp provided with position restricting means (17, 17, 170, 170).

The two half ring-shaped parts (14, 15), the hinge part (16), the claw fitting locking parts (19, 20) and the position restricting means (17, 17, 170, 170) have elasticity. 2. The pipe coupling clamp according to claim 1, wherein the pipe coupling clamp is integrally formed of resin.

The hinge portion (16) is formed of a thin portion having a smaller plate thickness than the two half ring-shaped portions (14, 15),
The thin-walled portion is formed across the formation part of the position restricting means (17, 17, 170, 170) and the parts on both the front and rear sides of the position restricting means (17, 17),
Among the thin portions, the formation range of the position restricting means (17, 17, 170, 170) constitutes a rigid part by adding the position restricting means (17, 17, 170, 170), while the position restricting means (17, 17, 170, 170) The pipe coupling clamp according to claim 1 or 2, characterized in that the front and rear side portions of the forming range of the means (17, 17, 170, 170) constitute a bendable elastically deformable portion (18, 18).

A taper shape (17a) that makes the interval between the position restricting means (17, 17, 170, 170) on both sides in the width direction wider on the tip side than the base part of the position restricting means (17, 17, 170, 170). 17a) is formed in the position restricting means (17, 17, 170, 170). The pipe coupling clamp according to any one of claims 1 to 3,

The said position control means is comprised by the guide rib (17, 17) which makes | forms the wall shape extended continuously in the length direction of the said hinge part (16), The any one of Claim 1 thru | or 4 characterized by the above-mentioned. Clamp for piping connection described in 1.

The said position control means is comprised by the pin-shaped member (170,170) which divides | segments into multiple and protrudes in the length direction of the said hinge part (16), Any one of Claim 1 thru | or 4 characterized by the above-mentioned. Clamp for piping connection described in 1.