JP2019100377A - Joint fitting and hose with joint fitting - Google Patents

Joint fitting and hose with joint fitting Download PDF

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JP2019100377A
JP2019100377A JP2017228791A JP2017228791A JP2019100377A JP 2019100377 A JP2019100377 A JP 2019100377A JP 2017228791 A JP2017228791 A JP 2017228791A JP 2017228791 A JP2017228791 A JP 2017228791A JP 2019100377 A JP2019100377 A JP 2019100377A
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nipple
socket
hose
layer
main body
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JP6949370B2 (en
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桝野　哲朗
Tetsuro Masuno
哲朗 桝野
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Nichirin Co Ltd
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Nichirin Co Ltd
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Abstract

To provide a joint fitting capable of improving sealability between an inner peripheral surface of a hose and an outer peripheral surface of a nipple body part, and a hose with a joint fitting.SOLUTION: A joint fitting comprises a nipple 20 and a socket 40. The nipple 20 has a nipple step part 22 provided between a nipple flange part 23 and a nipple body part 21, and formed into a convex shape toward a radially outward side. A radial height H1 of an end surface 22a in an axis direction Z of the nipple step part 22 is equal to or more than a thickness h1 of an innermost layer 71 of a multilayer hose 70. In a state where the multilayer hose 70 is arranged between a socket body part 41 and a nipple body part 21, when the socket body part 41 is caulked from an outside in a radial direction R toward an inside in the radial direction R, deformation of the innermost layer 71 in the axis direction Z is constrained on the end surface 22a of the nipple step part 22.SELECTED DRAWING: Figure 4

Description

本発明は、継手金具、および継手金具付ホースに関する。   The present invention relates to a fitting and a hose with a fitting.

例えば、特許文献１などに、従来の継手金具、および継手金具付ホースが記載されている（同文献の図２などを参照）。同文献に記載の継手金具では、ニップルがソケットの内側に配置される。また、ニップルとソケットとの間にホースが固定される。そして、ニップルおよびホースの内部を流体が流れるように、継手金具付ホースが構成される。   For example, a conventional joint fitting and a hose with a joint fitting are described in Patent Document 1 etc. (see FIG. 2 etc. in the same document). In the fitting described in the same document, the nipple is arranged inside the socket. Also, a hose is fixed between the nipple and the socket. Then, the hose with the fitting is configured such that the fluid flows inside the nipple and the hose.

特開２０１２−９２８９７号公報JP 2012-92897 A

この種の継手金具、および継手金具付ホースでは、継手金具から内部の流体が漏れることが問題となる。そのため、継手金具でのシール性を高めることが望まれる。   In this type of fitting and hose with fitting, there is a problem that the internal fluid leaks from the fitting. Therefore, it is desirable to improve the sealability of the fitting.

特許文献１の図２（ｃ）に記載の技術では、ニップルの突出部（ニップル接合部）とホースの先端部との間に隙間がある。また、同図に記載のようにソケットが加締められると、ホースが変形する。すると、ホースの先端部が、ニップルの突出部とホースの先端部との間の隙間に入り込む（はみ出る）場合がある。すると、ホースの圧縮力が低下し、ホースの内周面とニップル本体部の外周面との間でのシール性が低下するおそれがある。   In the technique described in FIG. 2C of Patent Document 1, there is a gap between the protrusion (nipple joint) of the nipple and the tip of the hose. Also, when the socket is crimped as shown in the figure, the hose is deformed. Then, the tip of the hose may get into the gap between the protrusion of the nipple and the tip of the hose. Then, the compression force of the hose is reduced, and the sealability between the inner peripheral surface of the hose and the outer peripheral surface of the nipple body may be reduced.

そこで、本発明では、ホースの内周面とニップル本体部の外周面との間でのシール性を向上させることができる、継手金具、および継手金具付ホースを提供することを目的とする。   Then, an object of the present invention is to provide a joint fitting and a hose with a joint fitting which can improve the sealing performance between the inner circumferential surface of the hose and the outer circumferential surface of the nipple body.

本発明の継手金具は、最内層を有する多層ホースが加締め固定される継手金具である。この継手金具は、筒状のニップルと、前記ニップルが内側に配置されるソケットとを備える。前記ニップルは、前記多層ホースに差し込まれる筒状のニップル本体部と、前記多層ホースに差し込まれる側とは反対側に設けられ、前記ソケットの内面に加締め固定されるニップル鍔部と、前記ニップル鍔部と前記ニップル本体部との間に設けられ、径方向外側に凸形状とされたニップル段差部とを有する。前記ニップル段差部の軸方向の端面の径方向高さが、前記最内層の厚み以上とされており、前記ソケットの筒状のソケット本体部と前記ニップル本体部との間に前記多層ホースが配置された状態で、径方向外側から径方向内側へ向かって前記ソケット本体部が加締められた際、前記最内層の軸方向への変形が、前記ニップル段差部の軸方向の端面で拘束される。   The joint fitting of the present invention is a joint fitting to which a multilayer hose having an innermost layer is crimped and fixed. The fitting includes a tubular nipple and a socket in which the nipple is disposed. The nipple is a cylindrical nipple body portion inserted into the multilayer hose, a nipple collar portion provided on the opposite side to the side inserted into the multilayer hose, and crimped and fixed to the inner surface of the socket, and the nipple It has a nipple level difference part which was provided between a collar part and the nipple main part, and was made into convex shape to the diameter direction outside. The radial height of the end face in the axial direction of the nipple step portion is equal to or greater than the thickness of the innermost layer, and the multilayer hose is disposed between the cylindrical socket main body of the socket and the nipple main body When the socket main body portion is crimped from the radially outer side toward the radially inner side in the closed state, the axial deformation of the innermost layer is restrained at the axial end face of the nipple step portion. .

また、本発明の継手金具付ホースは、前記継手金具に前記多層ホースが加締め固定されてなるものである。   Moreover, the hose with a fitting according to the present invention is formed by caulking and fixing the multilayer hose to the fitting.

本発明によると、径方向外側から径方向内側へ向かってソケット本体部が加締められた際に、多層ホースの最内層の全厚み分の軸方向の変形がニップル段差部で拘束され、これにより、ニップル本体部の外周面にホースの内周面が従来よりも強く押し付けられた状態となる。その結果、ホースの内周面とニップル本体部の外周面との間でのシール性が向上する。   According to the present invention, when the socket main body portion is crimped from the radially outer side toward the radially inner side, axial deformation of the entire thickness of the innermost layer of the multilayer hose is restrained by the nipple step portion, thereby The inner peripheral surface of the hose is pressed against the outer peripheral surface of the nipple body portion more strongly than in the prior art. As a result, the sealability between the inner peripheral surface of the hose and the outer peripheral surface of the nipple body is improved.

第１実施形態の継手金具１０の片側縦断面図である。It is a single-sided longitudinal cross-sectional view of the coupling metal fitting 10 of 1st Embodiment. ニップル２０が、ソケット４０に加締め固定される前の（製造途中の）継手金具１０を示す図１相当図である。It is the FIG. 1 equivalent view which shows the coupling fitting 10 (in the process of manufacture) before the nipple 20 is crimped and fixed to the socket 40. FIG. 図１に示す継手金具１０に、多層ホース７０が加締め固定されてなる継手金具付ホース１の片側縦断面図である。It is a single-sided longitudinal cross-sectional view of the hose 1 with a coupling metal fitting in which the multilayer hose 70 is crimped and fixed to the coupling metal fitting 10 shown in FIG. 図３のＡ部分を拡大した図である。It is the figure which expanded A part of FIG. ソケット段差部４２の軸方向の端面４２ａから、ニップル段差部２２の軸方向の端面２２ａまでの軸方向のずれＧが、正（＋）の場合の例を示す図４相当図である（多層ホース７０が差し込まれる側が正（＋））。It is the figure equivalent to FIG. 4 which shows the example in case the shift | offset | difference G of the axial direction from the end surface 42a of the axial direction of the socket level | step-difference part 42 to the end surface 22a of the axial direction of the nipple step part 22 is positive (+) (multilayer hose The side where 70 is inserted is positive (+). ソケット段差部４２の軸方向の端面４２ａから、ニップル段差部２２の軸方向の端面２２ａまでの軸方向のずれＧが、負（−）の場合の例を示す図４相当図である（多層ホース７０が差し込まれる側と反対側が負（−））。It is the figure equivalent to FIG. 4 which shows the example in case the shift | offset | difference G of the axial direction from the end surface 42a of the axial direction of the socket level | step-difference part 42 to the end surface 22a of the axial direction of the nipple step part 22 is negative (-). The side opposite to the one where 70 is inserted is negative (-). 第２実施形態の継手金具２１０、および継手金具付ホース２０１を示す図３相当図である。It is the FIG. 3 equivalent view which shows the coupling metal fitting 210 of 2nd Embodiment, and the hose 201 with a coupling metal fitting.

（第１実施形態）
図１〜図４を参照して、第１実施形態の継手金具１０、および継手金具付ホース１について説明する。 First Embodiment
The joint metal fitting 10 and the hose 1 with a joint metal fitting of the first embodiment will be described with reference to FIGS. 1 to 4.

継手金具１０は、多層ホース７０と、図示しない相手部品と、を接続する継手であって、筒状のニップル２０と、同じく筒状のソケット４０とを備える。継手金具１０に、多層ホース７０が加締め固定されてなる継手金具付ホース１は、気体や液体などの流体を送るためのものであり、例えば、液圧ブレーキホースなどである。   The joint metal fitting 10 is a joint for connecting the multilayer hose 70 and a mating part not shown, and includes a cylindrical nipple 20 and a cylindrical socket 40 as well. The hose 1 with a fitting provided with the multi-layered hose 70 fixed by caulking to the fitting 10 is for delivering a fluid such as gas or liquid, and is, for example, a hydraulic brake hose.

まず、継手金具１０に加締め固定される多層ホース７０について説明する。本実施形態の多層ホース７０は、図４に示すように、最内層７１、および最外層７５を有し、最内層７１と最外層７５との間には、径方向Ｒ内側から順に、第１補強層７２、中間層７３、および第２補強層７４が設けられている。第１補強層７２、および第２補強層７４は、例えば、合成繊維からなる層であり、最内層７１、最外層７５、および中間層７３は、例えば、ゴムまたは樹脂からなる層である。   First, the multilayer hose 70 caulked and fixed to the joint fitting 10 will be described. As shown in FIG. 4, the multilayer hose 70 of the present embodiment has an innermost layer 71 and an outermost layer 75, and between the innermost layer 71 and the outermost layer 75, in order from the inner side in the radial direction R, A reinforcing layer 72, an intermediate layer 73, and a second reinforcing layer 74 are provided. The first reinforcing layer 72 and the second reinforcing layer 74 are layers made of synthetic fibers, for example, and the innermost layer 71, the outermost layer 75, and the middle layer 73 are layers made of rubber or resin, for example.

なお、本発明において、多層ホース７０は、最内層７１と最外層７５とが、ゴム層または樹脂層であることが好ましいが、最内層７１および最外層７５の素材は、特に限定されるものではない。最内層７１および最外層７５は、弾性を有する層（＝弾性層）であることが好ましく、ゴム層または樹脂層に代えて、それぞれ、エラストマーを素材とする層であってもよい。また、最内層７１と最外層７５との間の各層７２〜７４についても同様であり、これら各層７２〜７４の素材は、特に限定されるものではない。   In the present invention, in the multilayer hose 70, the innermost layer 71 and the outermost layer 75 are preferably rubber layers or resin layers, but the materials of the innermost layer 71 and the outermost layer 75 are not particularly limited. Absent. The innermost layer 71 and the outermost layer 75 are preferably layers having elasticity (= elastic layers), and may be layers made of an elastomer instead of the rubber layer or the resin layer. Further, the same applies to each of the layers 72 to 74 between the innermost layer 71 and the outermost layer 75, and the material of each of the layers 72 to 74 is not particularly limited.

また、本実施形態の多層ホース７０は５層構造であるが、これに限定されることはなく、４層以下の構成の多層ホースでも、６層以上の構成の多層ホースであってもよい。   Moreover, although the multilayer hose 70 of this embodiment is 5 layer structure, it is not limited to this, It may be a multilayer hose of a structure of four or less layers, or a multilayer hose of a structure of six or more layers.

継手金具１０について説明する。
図１などに示すように、継手金具１０を構成する前記ニップル２０は、多層ホース７０に差し込まれる筒状のニップル本体部２１と、多層ホース７０に差し込まれる側とは反対側の端部に設けられ、ソケット４０の内面に加締め固定されるニップル鍔部２３と、ニップル鍔部２３とニップル本体部２１との間に設けられ、径方向Ｒ外側に凸形状とされたニップル段差部２２と、を備える金属製の部品である。 The fitting 10 will be described.
As shown in FIG. 1 etc., the nipple 20 constituting the joint fitting 10 is provided at the end opposite to the side where the tubular nipple body 21 inserted into the multilayer hose 70 and the side inserted into the multilayer hose 70 A nipple flange 23 fixed to the inner surface of the socket 40 by caulking, a nipple step 22 provided between the nipple flange 23 and the nipple body 21 and having a convex shape in the radial direction R, It is a metal part provided with

ニップル本体部２１の外周面は、本実施形態では、滑らかな曲面とされている。なお、多層ホース７０の内周面との間でのシール性を高くするために、ニップル本体部２１の外周面には、複数の段差（凹溝や凸山など）が形成されていることが好ましい（不図示）。   The outer circumferential surface of the nipple body 21 is a smooth curved surface in the present embodiment. Note that in order to enhance the sealing performance with the inner circumferential surface of the multilayer hose 70, a plurality of steps (such as concave grooves and convex ridges) are formed on the outer circumferential surface of the nipple main body 21. Preferred (not shown).

図４に示すように、ニップル段差部２２の軸方向Ｚの端面２２ａの径方向Ｒの高さＨ１は、多層ホース７０の最内層７１の厚みｈ１以上とされている。なお、当該厚みｈ１は、多層ホース７０に外力が加えられていない状態のときの多層ホース７０の最内層７１の厚みである。   As shown in FIG. 4, the height H 1 in the radial direction R of the end face 22 a in the axial direction Z of the nipple step portion 22 is equal to or greater than the thickness h 1 of the innermost layer 71 of the multilayer hose 70. The thickness h1 is the thickness of the innermost layer 71 of the multilayer hose 70 when no external force is applied to the multilayer hose 70.

次に、ソケット４０は、ニップル２０が内側に配置される金属製の部品であって、図１などに示すように、多層ホース７０が差し込まれる筒状のソケット本体部４１と、ソケット本体部４１の端部に設けられ、径方向Ｒ内側に凸形状とされたたソケット段差部４２と、を備える。ソケット４０の、ソケット本体部４１とは反対側の端部には、めねじ部４７が設けられており、このめねじ部４７には、図示しないパイプがねじ込まれる。   Next, the socket 40 is a metal component in which the nipple 20 is disposed inside, and as shown in FIG. 1 etc., a cylindrical socket main body 41 into which the multilayer hose 70 is inserted, and a socket main body 41 And a socket step portion 42 which is provided at the end portion of the housing and has a convex shape inward in the radial direction R. A female screw 47 is provided at the end of the socket 40 opposite to the socket body 41, and a pipe (not shown) is screwed into the female screw 47.

図４に示すように、本実施形態のソケット段差部４２の軸方向Ｚの端面４２ａの径方向Ｒの高さＨ２は、多層ホース７０の最外層７５の厚みｈ２以上とされている。なお、当該厚みｈ２は、多層ホース７０に外力が加えられていない状態のときの多層ホース７０の最外層７５の厚みである。   As shown in FIG. 4, the height H 2 in the radial direction R of the end face 42 a in the axial direction Z of the socket step portion 42 of the present embodiment is equal to or greater than the thickness h 2 of the outermost layer 75 of the multilayer hose 70. The thickness h2 is the thickness of the outermost layer 75 of the multilayer hose 70 when no external force is applied to the multilayer hose 70.

ニップル２０とソケット４０との固定方法について説明する。
図２に示したように、ソケット４０の内部にニップル２０を配置する。そして、加締め工具Ｃ（加締めピン、図１参照）を用い、ニップル段差部２２を避けて、ソケット４０内部の被加締め面４３を軸方向Ｚから加締める。すると、当該被加締め面４３は、塑性変形し、軸方向Ｚ奥側に変位するとともに径方向Ｒ内側に拡がる。これにより、ニップル鍔部２３がソケット４０の内面に加締め固定されて、ニップル２０とソケット４０とが固定される。また、この加締め工程により、高さＨ２の端面４２ａを有するソケット段差部４２が形成される。 The fixing method of the nipple 20 and the socket 40 is demonstrated.
As shown in FIG. 2, the nipple 20 is disposed inside the socket 40. Then, the caulking surface 43 inside the socket 40 is caulked from the axial direction Z by using a caulking tool C (a caulking pin, see FIG. 1), avoiding the nipple step portion 22. Then, the to-be-clamped surface 43 is plastically deformed and is displaced to the back side in the axial direction Z and spreads inward in the radial direction R. Thereby, the nipple collar portion 23 is crimped and fixed to the inner surface of the socket 40, and the nipple 20 and the socket 40 are fixed. Moreover, the socket level | step-difference part 42 which has the end surface 42a of height H2 is formed of this caulking process.

継手金具１０への多層ホース７０の固定方法について説明する。
まず、ソケット本体部４１とニップル本体部２１との間に多層ホース７０を差し込んで、当該ソケット本体部４１と当該ニップル本体部２１との間に多層ホース７０を配置する。この状態で、図３に示すように、径方向Ｒ外側から径方向Ｒ内側へ向かってソケット本体部４１を加締める。これにより、継手金具１０に多層ホース７０が固定されて、継手金具付ホース１が得られる。 A method of fixing the multilayer hose 70 to the joint fitting 10 will be described.
First, the multilayer hose 70 is inserted between the socket main body 41 and the nipple main body 21, and the multilayer hose 70 is disposed between the socket main body 41 and the nipple main body 21. In this state, as shown in FIG. 3, the socket body 41 is crimped from the outer side in the radial direction R toward the inner side in the radial direction R. Thereby, the multilayer hose 70 is fixed to the joint fitting 10, and the hose 1 with the joint fitting is obtained.

径方向Ｒ外側から径方向Ｒ内側へ向かってソケット本体部４１が加締められると、ニップル段差部２２の端面２２ａの高さＨ１が、最内層７１の厚みｈ１以上とされているので、多層ホース７０の最内層７１の全厚み分の軸方向の変形が、ニップル段差部２２の端面２２ａで拘束される。最内層７１の全厚み分の軸方向の変形が、ニップル段差部２２の端面２２ａで拘束されると、最内層７１は、軸方向へ変形のしようがないので、軸方向に対して直交する方向、すなわち径方向Ｒにおいて、ニップル本体部２１の外周面に強く押し付けられる。その結果、多層ホース７０の最内層７１の内周面と、ニップル本体部２１の外周面とが強く密着し、シール性が向上する。   When the socket body 41 is crimped from the outside in the radial direction R toward the inside in the radial direction R, the height H1 of the end face 22a of the nipple step 22 is equal to or greater than the thickness h1 of the innermost layer 71. The deformation in the axial direction of the entire thickness of the innermost layer 71 of 70 is restrained by the end face 22 a of the nipple step portion 22. When deformation in the axial direction of the entire thickness of the innermost layer 71 is restrained by the end face 22a of the nipple step portion 22, the innermost layer 71 has no possibility of deformation in the axial direction, and therefore, a direction orthogonal to the axial direction That is, in the radial direction R, the outer peripheral surface of the nipple body 21 is strongly pressed. As a result, the inner peripheral surface of the innermost layer 71 of the multilayer hose 70 and the outer peripheral surface of the nipple main body portion 21 are in close contact, and the sealing performance is improved.

本実施形態では、さらに、ソケット段差部４２の端面４２ａの高さＨ２が、多層ホース７０の最外層７５の厚みｈ２以上とされている。これによると、最内層７１側と同様に、最外層７５の全厚み分の軸方向の変形が、ソケット段差部４２の端面４２ａで拘束されて、径方向Ｒにおいて、最外層７５は、ソケット本体部４１の内周面に強く押し付けられた状態となる。ソケット本体部４１の内周面と、多層ホース７０の最外層７５の外周面との間は、ニップル本体部２１の外周面と、多層ホース７０の最内層７１の内周面との間と同様に、ホース内部を流れる流体の漏れ経路となり得る部分であるので、ソケット本体部４１の内周面に最外層７５が強く押し付けられると、その最外層７５の外周面と、ソケット本体部４１の内周面とが強く密着し、シール性が向上する。その結果、継手金具１０（継手金具付ホース１）のシール性が、より向上する。   Further, in the present embodiment, the height H2 of the end face 42a of the socket step portion 42 is equal to or more than the thickness h2 of the outermost layer 75 of the multilayer hose 70. According to this, as in the innermost layer 71 side, axial deformation of the entire thickness of the outermost layer 75 is restrained by the end face 42 a of the socket step portion 42, and the outermost layer 75 in the radial direction R The inner peripheral surface of the portion 41 is strongly pressed. The space between the inner peripheral surface of the socket body 41 and the outer peripheral surface of the outermost layer 75 of the multilayer hose 70 is the same as the space between the outer peripheral surface of the nipple main body 21 and the inner peripheral surface of the innermost layer 71 of the multilayer hose 70. Since the outermost layer 75 is strongly pressed against the inner peripheral surface of the socket main body 41, the outer peripheral surface of the outermost layer 75 and the inside of the socket main body 41 Strong contact with the circumferential surface improves sealing performance. As a result, the sealability of the fitting 10 (the hose 1 with a fitting) is further improved.

なお、ニップル段差部２２の端面２２ａの高さＨ１が、多層ホース７０の最内層７１の厚みｈ１以上とされていることのみでも、シール性は十分向上するので、ソケット段差部４２の端面４２ａの高さＨ２は、多層ホース７０の最外層７５の厚みｈ２未満であってもよい。   The sealing performance is sufficiently improved simply by setting the height H1 of the end face 22a of the nipple step 22 to the thickness h1 or more of the innermost layer 71 of the multilayer hose 70. The height H2 may be less than the thickness h2 of the outermost layer 75 of the multilayer hose 70.

なお、ソケット本体部４１とニップル本体部２１との間に、多層ホース７０を配置する際には、ニップル段差部２２の端面２２ａ、およびソケット段差部４２の端面４２ａのいずれにも、多層ホース７０の先端面７０ａを突き合わせておくことが好ましい。このようにしておくと、その後のソケット本体部４１の加締めにより、ニップル本体部２１の外周面と多層ホース７０の最内層７１の内周面との密着性、およびソケット本体部４１の内周面と多層ホース７０の最外層７５の外周面との密着性のいずれも、より高めることができる。   When the multilayer hose 70 is disposed between the socket main body portion 41 and the nipple main body portion 21, the multilayer hose 70 is formed on either the end face 22 a of the nipple step 22 or the end face 42 a of the socket step 42. It is preferable that the front end surfaces 70a of the front and rear surfaces be in contact. When this is done, the adhesion between the outer peripheral surface of the nipple main body 21 and the inner peripheral surface of the innermost layer 71 of the multilayer hose 70 and the inner peripheral surface of the socket main body 41 by caulking the socket main body 41 thereafter Any of the adhesion between the surface and the outer peripheral surface of the outermost layer 75 of the multilayer hose 70 can be further enhanced.

（ニップル段差部２２の端面２２ａの位置）
多層ホース７０を側方から視たとき、多層ホース７０の先端面７０ａは、軸方向Ｚに対してほぼ直交する面であるため、多層ホース７０の最内層７１側（ニップル段差部２２側）、および多層ホース７０の最外層７５側（ソケット段差部４２側）のいずれにおいても密着性を向上させるには、ニップル段差部２２の端面２２ａの軸方向Ｚ位置と、ソケット段差部４２の端面４２ａの軸方向Ｚ位置とが、図４などにおいて図示したように、同じ位置であることが好ましい。 (Position of end face 22a of nipple step 22)
When the multilayer hose 70 is viewed from the side, the tip end surface 70a of the multilayer hose 70 is a surface substantially orthogonal to the axial direction Z, so the innermost layer 71 side of the multilayer hose 70 (nipple step portion 22 side), And in order to improve the adhesion on any of the outermost layer 75 side (the socket step portion 42 side) of the multilayer hose 70, the axial direction Z position of the end face 22a of the nipple step portion 22 and the end face 42a of the socket step portion 42 It is preferable that the axial direction Z position is the same position as illustrated in FIG. 4 and the like.

ニップル段差部２２の端面２２ａが、ソケット段差部４２の端面４２ａよりも、多層ホース７０が差し込まれる側（図４における右側）に離れすぎると、ソケット本体部４１を加締めた時、多層ホース７０の最外層７５の軸方向Ｚへの変形量が大きくなって、当該最外層７５の外周面と、ソケット本体部４１の内周面との間の密着性が低下する場合がある。逆に、ニップル段差部２２の端面２２ａが、ソケット段差部４２の端面４２ａよりも、多層ホース７０が差し込まれる側とは反対側（図４における左側）に離れすぎると、ソケット本体部４１を加締めた時、多層ホース７０の最内層７１の軸方向Ｚへの変形量が大きくなって、当該最内層７１の内周面と、ニップル本体部２１の外周面との間の密着性が低下する場合がある。   When the end face 22a of the nipple step 22 is too far from the end face 42a of the socket step 42 to be inserted into the multilayer hose 70 (right side in FIG. 4), the multilayer hose 70 is crimped. The amount of deformation of the outermost layer 75 in the axial direction Z may be large, and the adhesion between the outer peripheral surface of the outermost layer 75 and the inner peripheral surface of the socket main body 41 may be reduced. Conversely, if the end face 22a of the nipple step 22 is too far from the end 42a of the socket step 42 to the side (left side in FIG. 4) opposite to the side where the multilayer hose 70 is inserted, the socket body 41 is added. When tightened, the amount of deformation of the innermost layer 71 of the multilayer hose 70 in the axial direction Z increases, and the adhesion between the inner peripheral surface of the innermost layer 71 and the outer peripheral surface of the nipple body 21 decreases. There is a case.

一方、ニップル段差部２２の端面２２ａの軸方向Ｚ位置と、ソケット段差部４２の端面４２ａの軸方向Ｚ位置とを、完全一致させることは製造上、難しい。部品（ニップル２０およびソケット４０）の機械加工誤差もあるが、端面２２ａ、４２ａ間の軸方向Ｚの位置ずれは、ソケット４０の内面へのニップル鍔部２３の加締め固定に起因する影響が大きい。そのため、ソケット段差部４２の軸方向Ｚの端面４２ａから、ニップル段差部２２の軸方向Ｚの端面２２ａまでの軸方向Ｚの距離を、ずれＧとし、多層ホース７０が差し込まれる側を＋としたとき、ずれＧは、多層ホース７０の最内層７１の厚みｈ１の、−６０％から＋１１５％までの範囲内とされていることが好ましい（図５、６参照）。例えば、最内層７１の厚みｈ１が約０．８５ｍｍの場合、ずれＧは、−０．５ｍｍから＋１．０ｍｍまでの範囲内とされていることが好ましい。   On the other hand, it is difficult to make the axial direction Z position of the end face 22a of the nipple stepped portion 22 completely coincide with the axial direction Z position of the end face 42a of the socket stepped portion 42 in manufacturing. Although there is also a machining error of parts (nipple 20 and socket 40), the positional deviation in the axial direction Z between the end faces 22a, 42a has a large effect due to the caulking fixing of the nipple ridge 23 to the inner surface of the socket 40. . Therefore, the distance in the axial direction Z from the end surface 42a in the axial direction Z of the socket step portion 42 to the end surface 22a in the axial direction Z of the nipple step portion 22 is a shift G, and the side into which the multilayer hose 70 is inserted is made +. It is preferable that the gap G be in the range of −60% to + 115% of the thickness h1 of the innermost layer 71 of the multilayer hose 70 (see FIGS. 5 and 6). For example, when the thickness h1 of the innermost layer 71 is about 0.85 mm, the deviation G is preferably in the range of -0.5 mm to +1.0 mm.

さらには、ずれＧは、多層ホース７０の最内層７１の厚みｈ１の、０％から＋１１５％までの範囲内とされていることが好ましい。この場合、例えば、最内層７１の厚みｈ１が約０．８５ｍｍの場合、ずれＧは、０ｍｍから＋１．０ｍｍまでの範囲内ということになる。   Furthermore, it is preferable that the gap G be in the range of 0% to + 115% of the thickness h1 of the innermost layer 71 of the multilayer hose 70. In this case, for example, when the thickness h1 of the innermost layer 71 is about 0.85 mm, the deviation G is in the range of 0 mm to +1.0 mm.

ソケット本体部４１の内周面と多層ホース７０の最外層７５の外周面との間のシール部（外側シール部）よりも、ニップル本体部２１の外周面と多層ホース７０の最内層７１の内周面との間のシール部（内側シール部）のシールを優先させた方が、継手金具１０（継手金具付ホース１）からの流体の漏れをより確実に防ぐことができる。そのため、ニップル段差部２２の端面２２ａの軸方向Ｚ位置と、ソケット段差部４２の端面４２ａの軸方向Ｚ位置とを、完全一致させることが製造上、難しいことを考慮すると、ずれＧは、多層ホース７０が差し込まれる側に＋であること、すなわち、ずれＧは、多層ホース７０の最内層７１の厚みｈ１の、０％から＋１１５％までの範囲内とされていることが、より好ましい。   The inner peripheral surface of the nipple main body portion 21 and the innermost layer 71 of the multilayer hose 70 than the seal portion (outer seal portion) between the inner peripheral surface of the socket main body portion 41 and the outer peripheral surface of the outermost layer 75 of the multilayer hose 70 If priority is given to the seal of the seal portion (inner seal portion) with the circumferential surface, the fluid leakage from the joint fitting 10 (the hose 1 with joint fitting) can be more reliably prevented. Therefore, considering that it is difficult in manufacturing to completely match the axial direction Z position of the end face 22a of the nipple step 22 with the axial direction Z position of the end face 42a of the socket step 42, the gap G is a multilayer It is more preferable that the side where the hose 70 is inserted be +, that is, the offset G be in the range of 0% to + 115% of the thickness h1 of the innermost layer 71 of the multilayer hose 70.

（第２実施形態）
図７を参照して、第２実施形態の継手金具２１０、および継手金具付ホース２０１について、主に第１実施形態との相違点を説明する。なお、第２実施形態の継手金具２１０、および継手金具付ホース２０１のうち、第１実施形態との共通点については、第１実施形態と同一の符号を付し、説明を省略した。相違点は、継手金具２１０のニップル２２０およびソケット２４０の一部構成である。 Second Embodiment
With reference to FIG. 7, differences between the joint fitting 210 of the second embodiment and the hose 201 with a joint fitting according to the first embodiment will be mainly described. In the joint metal fitting 210 of the second embodiment and the hose 201 with a joint metal fitting, the same reference numerals as those of the first embodiment are given to the points common to the first embodiment, and the description thereof is omitted. The difference is a partial configuration of the nipple 220 and the socket 240 of the fitting fitting 210.

図３に示すように、第１実施形態におけるニップル２０では、多層ホース７０に差し込まれる側とは反対側の端部に、ニップル鍔部２３が設けられた。一方、本実施形態では、ニップル２２０は、ニップル鍔部２３から軸方向Ｚに延びるパイプ部２３０を、さらに備える。パイプ部２３０は、ニップル本体部２１およびニップル鍔部２３と同軸に設けられる。ソケット２４０は、めねじ部４７（図３参照）に代えて、パイプ部通し部２４９を備える。   As shown in FIG. 3, in the nipple 20 in the first embodiment, the nipple collar 23 is provided at the end opposite to the side where the multilayer hose 70 is inserted. On the other hand, in the present embodiment, the nipple 220 further includes a pipe portion 230 extending in the axial direction Z from the nipple flange portion 23. The pipe portion 230 is provided coaxially with the nipple body portion 21 and the nipple collar portion 23. The socket 240 includes a pipe portion passing portion 249 instead of the female screw portion 47 (see FIG. 3).

以上、本発明を実施するための形態を２例示したが、前記した２つの実施形態は、それぞれ、様々に変形されてもよい。例えば、各部の配置や形状は、図示した通りでもよく、図示したものと異なってもよい。また、互いに異なる実施形態の構成要素どうしが組み合わされてもよい。さらには、実施形態の構成要素の一部が設けられていなくてもよい。   As mentioned above, although two modes for carrying out the present invention were illustrated, two above-mentioned embodiments may be changed variously, respectively. For example, the arrangement and shape of each part may be as illustrated or different from that illustrated. Also, components of different embodiments may be combined. Furthermore, some of the components of the embodiment may not be provided.

１、２０１ 継手金具付ホース
１０、２１０ 継手金具
２０、２２０ ニップル
２１ ニップル本体部
２２ ニップル段差部
２２ａ 端面
２３ ニップル鍔部
４０、２４０ ソケット
４１ ソケット本体部
４２ ソケット段差部
４２ａ 端面
７０ 多層ホース
７１ 最内層
７５ 最外層 DESCRIPTION OF SYMBOLS 1, 201 Fitting attachment hose 10, 210 Fitting attachment 20, 220 Nipple 21 Nipple main body part 22 Nipple difference part 22a end face 23 Nipple ridge part 40, 240 Socket 41 Socket main part 42 Socket difference part 42a End face 70 Multilayer hose 71 innermost layer 75 Outermost layer

Claims (6)

最内層を有する多層ホースが加締め固定される継手金具であって、
筒状のニップルと、
前記ニップルが内側に配置されるソケットと、
を備え、
前記ニップルは、
前記多層ホースに差し込まれる筒状のニップル本体部と、
前記多層ホースに差し込まれる側とは反対側に設けられ、前記ソケットの内面に加締め固定されるニップル鍔部と、
前記ニップル鍔部と前記ニップル本体部との間に設けられ、径方向外側に凸形状とされたニップル段差部と、
を有しており、
前記ニップル段差部の軸方向の端面の径方向高さが、前記最内層の厚み以上とされており、
前記ソケットの筒状のソケット本体部と前記ニップル本体部との間に前記多層ホースが配置された状態で、径方向外側から径方向内側へ向かって前記ソケット本体部が加締められた際、前記最内層の軸方向への変形が、前記ニップル段差部の軸方向の端面で拘束される、
継手金具。 A fitting fitting to which a multilayer hose having an innermost layer is crimped and fixed,
With a tubular nipple,
A socket in which the nipple is disposed inside;
Equipped with
The nipple is
A cylindrical nipple body inserted into the multilayer hose;
A nipple collar portion provided on the side opposite to the side to be inserted into the multilayer hose and crimped and fixed to the inner surface of the socket;
A nipple step portion provided between the nipple collar portion and the nipple main body portion and radially convex outward;
And have
The radial height of the end face in the axial direction of the nipple step portion is equal to or greater than the thickness of the innermost layer,
When the multi-layer hose is disposed between the cylindrical socket main body of the socket and the nipple main body, when the socket main body is crimped from the radially outer side toward the radially inner side, The axial deformation of the innermost layer is constrained at the axial end face of the nipple step;
Fittings. 請求項１に記載の継手金具であって、
前記多層ホースは、最外層を有し、
前記ソケットは、前記ソケット本体部の端部に設けられ、径方向内側に凸形状とされたソケット段差部を有しており、
前記ソケット段差部の軸方向の端面の径方向高さが、前記最外層の厚み以上とされており、
前記ソケット本体部と前記ニップル本体部との間に前記多層ホースが配置された状態で、径方向外側から径方向内側へ向かって前記ソケット本体部が加締められた際、前記最内層の軸方向への変形が、前記ニップル段差部の軸方向の端面で拘束されるとともに、前記最外層の軸方向への変形が、前記ソケット段差部の軸方向の端面で拘束される、
継手金具。 The joint metal fitting according to claim 1, wherein
The multilayer hose has an outermost layer,
The socket is provided at an end portion of the socket main body portion and has a socket step portion convex inward in the radial direction.
The radial height of the end face in the axial direction of the socket stepped portion is equal to or greater than the thickness of the outermost layer,
When the multi-layer hose is disposed between the socket main body and the nipple main body, the axial direction of the innermost layer when the socket main body is crimped radially inward from the radial outer side Deformation to the axial direction of the nipple stepped portion is restrained, and axial deformation of the outermost layer is restrained by the axial end surface of the socket stepped portion,
Fittings. 請求項２に記載の継手金具であって、
前記ソケット段差部の軸方向の端面から、前記ニップル段差部の軸方向の端面までの軸方向の距離を、ずれＧとし、前記多層ホースが差し込まれる側を＋としたとき、
前記ずれＧは、前記最内層の厚みの、−６０％から＋１１５％までの範囲内とされている、
継手金具。 The joint metal fitting according to claim 2, wherein
When an axial distance from an end face in an axial direction of the socket step portion to an end face in the axial direction of the nipple step portion is a shift G, and a side into which the multilayer hose is inserted is +.
The deviation G is in the range of −60% to + 115% of the thickness of the innermost layer,
Fittings. 請求項１〜３のいずれかに記載の継手金具であって、
前記最内層が、ゴム層または樹脂層である、
継手金具。 It is a fitting according to any one of claims 1 to 3, and
The innermost layer is a rubber layer or a resin layer,
Fittings. 請求項２または３に記載の継手金具であって、
前記最内層および前記最外層が、いずれも、ゴム層または樹脂層である、
継手金具。 The joint metal fitting according to claim 2 or 3, wherein
Both the innermost layer and the outermost layer are a rubber layer or a resin layer,
Fittings. 請求項１〜５のいずれかに記載の継手金具に、前記多層ホースが加締め固定されてなる継手金具付ホース。   The hose with a joint metal fitting in which the said multilayer hose is crimped and fixed to the joint metal fitting in any one of Claims 1-5.
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Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5730486U (en) * 1980-07-28 1982-02-17
DE3920810A1 (en) * 1989-06-24 1991-01-10 Kessler & Co Tech Chem Gmbh HOSE CONNECTION FITTING FOR A HIGH PRESSURE HOSE
JPH0630597U (en) * 1992-09-22 1994-04-22 株式会社明治ゴム化成 Hose assembly fittings
JPH109466A (en) * 1996-06-27 1998-01-13 Toyoda Gosei Co Ltd Hose joint structure and its manufacture
JPH11344179A (en) * 1998-06-03 1999-12-14 Hitachi Cable Ltd Mouthpiece for hose
DE10126429A1 (en) * 2001-05-31 2002-12-05 Hsi Schlauch Und Armaturentech Hose unit for transporting fluids comprises a multi-layered hose with a flexible plastic inner pipe with a helical wall, two vulcanized cover layers, an interposed fabric layer, and at least one connector piece
JP2003278974A (en) * 2002-03-20 2003-10-02 Toyoda Gosei Co Ltd Metal fitting for hose
KR20060095016A (en) * 2005-02-25 2006-08-30 엘에스전선 주식회사 A high pressure hose assembly
JP2008144907A (en) * 2006-12-12 2008-06-26 Bridgestone Corp Hose connecting method, and hose connecting structure
JP2009180256A (en) * 2008-01-29 2009-08-13 Nichirin Co Ltd Metal fitting for brake hose, its manufacturing method and brake hose
JP2012092897A (en) * 2010-10-27 2012-05-17 Nichirin Co Ltd Connecting structure of pipe and hose joint fitting
DE102012209800A1 (en) * 2012-06-12 2013-12-12 Hansgrohe Se Shower hose connector for sanitary fitting, has hose with end suspended on tube section of connection fitting, and cover sleeve covering outer side of connection fitting in mounting portion and visible region of mounting portion
JP2014149071A (en) * 2013-02-04 2014-08-21 Okawa Seira Kogyo Kk Hose joint and method for manufacturing hose joint
WO2015029995A1 (en) * 2013-08-26 2015-03-05 株式会社ブリヂストン Joint and method for manufacturing pipe body with joint

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5730486U (en) * 1980-07-28 1982-02-17
DE3920810A1 (en) * 1989-06-24 1991-01-10 Kessler & Co Tech Chem Gmbh HOSE CONNECTION FITTING FOR A HIGH PRESSURE HOSE
JPH0630597U (en) * 1992-09-22 1994-04-22 株式会社明治ゴム化成 Hose assembly fittings
JPH109466A (en) * 1996-06-27 1998-01-13 Toyoda Gosei Co Ltd Hose joint structure and its manufacture
JPH11344179A (en) * 1998-06-03 1999-12-14 Hitachi Cable Ltd Mouthpiece for hose
DE10126429A1 (en) * 2001-05-31 2002-12-05 Hsi Schlauch Und Armaturentech Hose unit for transporting fluids comprises a multi-layered hose with a flexible plastic inner pipe with a helical wall, two vulcanized cover layers, an interposed fabric layer, and at least one connector piece
JP2003278974A (en) * 2002-03-20 2003-10-02 Toyoda Gosei Co Ltd Metal fitting for hose
KR20060095016A (en) * 2005-02-25 2006-08-30 엘에스전선 주식회사 A high pressure hose assembly
JP2008144907A (en) * 2006-12-12 2008-06-26 Bridgestone Corp Hose connecting method, and hose connecting structure
JP2009180256A (en) * 2008-01-29 2009-08-13 Nichirin Co Ltd Metal fitting for brake hose, its manufacturing method and brake hose
JP2012092897A (en) * 2010-10-27 2012-05-17 Nichirin Co Ltd Connecting structure of pipe and hose joint fitting
DE102012209800A1 (en) * 2012-06-12 2013-12-12 Hansgrohe Se Shower hose connector for sanitary fitting, has hose with end suspended on tube section of connection fitting, and cover sleeve covering outer side of connection fitting in mounting portion and visible region of mounting portion
JP2014149071A (en) * 2013-02-04 2014-08-21 Okawa Seira Kogyo Kk Hose joint and method for manufacturing hose joint
WO2015029995A1 (en) * 2013-08-26 2015-03-05 株式会社ブリヂストン Joint and method for manufacturing pipe body with joint

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