JP7053046B2

JP7053046B2 - Hose metal fittings

Info

Publication number: JP7053046B2
Application number: JP2019125120A
Authority: JP
Inventors: 知彦平林; 俊田中
Original assignee: 日平機器株式会社
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2022-04-12
Anticipated expiration: 2039-07-04
Also published as: JP2021011891A

Description

本発明は、ホース類の継手として使用されるホース金具に係り、特に圧縮空気を通すための耐圧性能を高めた耐圧補強繊維を有するホースに使用されるホース金具に関する。 The present invention relates to a hose metal fitting used as a joint of hoses, and more particularly to a hose metal fitting used for a hose having a pressure resistant reinforcing fiber having enhanced pressure resistant performance for passing compressed air.

ホース金具は、配管等に使用するホース、チューブ等の端部に取り付けて、他の部材に取り付けるための金具である。例えば、ホース金具をホース類の端部に取り付ける際は、パイプ状の部材又はパイプに段状の抜止め溝を設けた部材をホース類に差し込み、ホース類の外部から筒状の金具を締め付けて止める。 The hose metal fitting is a metal fitting that is attached to the end of a hose, tube, or the like used for piping or the like and is attached to another member. For example, when attaching a hose fitting to the end of a hose, insert a pipe-shaped member or a member having a stepped retaining groove in the pipe into the hose, and tighten the tubular fitting from the outside of the hose. stop.

また、圧縮空気を圧送するような耐圧性能を必要とする耐圧合成樹脂製のホースとしては、網入りホース（耐圧補強繊維入りホース）が普及している。この網入りホースは、柔軟性があり、ホース金具へ容易に取り付けることができるため、迅速に配管作業ができる。 Further, as a hose made of pressure-resistant synthetic resin that requires pressure-resistant performance such as pumping compressed air, a hose with a mesh (a hose containing pressure-resistant reinforcing fiber) is widely used. This netted hose is flexible and can be easily attached to the hose fittings, so plumbing work can be performed quickly.

このような圧縮空気を圧送する耐圧性能を必要とする耐圧ホース（耐圧合成樹脂製ホース）では、ホース金具からホースの端部が外れないように種々の工夫が施されている。例えば、図８と図９に示すように、従来のホース金具６１は雄型６２のホース差込部６３に抜け止めの溝状のエッジ６４が形成されたものが多い。これに筒形状の雌型６５を螺合締結したものである。このような構成のホース金具６１は、工具で容易にホースの付け替えが行えるため、屋内設置型ホースリール等に使用されることが多い。
更に、「たけのこ」と称される複数の抜け止め用の溝状のエッジがホース差込部６３に形成された形状のホース金具もある。 In a pressure-resistant hose (hose made of pressure-resistant synthetic resin) that requires pressure-resistant performance for pumping compressed air, various measures are taken so that the end of the hose does not come off from the hose fitting. For example, as shown in FIGS. 8 and 9, many of the conventional hose fittings 61 have a groove-shaped edge 64 to prevent them from coming off at the hose insertion portion 63 of the male mold 62. A tubular female mold 65 is screwed and fastened to this. Since the hose metal fitting 61 having such a configuration can be easily replaced with a tool, it is often used for indoor installation type hose reels and the like.
Further, there is also a hose metal fitting having a shape in which a plurality of groove-shaped edges for preventing slipping, which are called "bamboo shoots", are formed in the hose insertion portion 63.

このような抜け止め機能を高めたホース金具が種々提案されている。例えば、特許文献１の特開平７－２０８６７１号公報「ホースの接続金具のカシメ方法とその製品」のように、ホース外側に静止状に嵌着した接続金具付の外筒を、ホース端部にホースとの接触部のホース面を少し膨らまし状になるような状態を現出させるような形状に形成した内筒を挿着しておき、この状態の内筒面に対して、前記外筒面が対向する位置まで、前記外筒を圧入して接続金具をホースに締結するようにした、外筒を内筒に圧入した際、内筒の変形を要することなく外筒が膨らむ程度の形状剛性としたことを特徴とするホースの接続金具が提案されている。 Various hose fittings having such a retaining function have been proposed. For example, as in Japanese Patent Application Laid-Open No. 7-208671 "Method of caulking a hose connection fitting and its product" in Patent Document 1, an outer cylinder with a connection fitting statically fitted to the outside of the hose is attached to the hose end. An inner cylinder formed in a shape that makes the hose surface of the contact portion with the hose appear slightly inflated is inserted, and the outer cylinder surface is referred to the inner cylinder surface in this state. The outer cylinder is press-fitted to the position where it faces, and the connection fitting is fastened to the hose. A hose connection fitting has been proposed.

特開平７－２０８６７１号公報Japanese Unexamined Patent Publication No. 7-208671

図８．９で示すようにホース金具は、エアーツールなどに接続して使用されるが、一般的なホース金具はホースとの境へ屈曲や引張りの力が集中し、ホースの耐圧補強繊維（補強糸）が抜け、耐圧性を失い破裂などを起こしやすいという問題を有していた。その構造上耐圧補強繊維を押さえる範囲も限られ、通常糸抜けを抑制するにはカシメ圧（加圧）を上げる方法があるが、ホースの被覆に負担がかかり被損するため限界があった。 As shown in Fig. 8.9, the hose metal fittings are used by connecting to an air tool, etc., but in general hose metal fittings, bending and pulling forces are concentrated on the boundary with the hose, and the pressure resistant reinforcing fiber of the hose ( There was a problem that the reinforcing thread) came off, the pressure resistance was lost, and the hose was liable to burst. Due to its structure, the range in which the pressure-resistant reinforcing fiber is pressed is limited, and there is usually a method of increasing the caulking pressure (pressurization) to suppress the thread coming off, but there is a limit because the coating of the hose is burdened and damaged.

図１０の拡大側断面図に示すように、従来のホース金具６１は、エッジ６４部分でホースＨを潰して、ホースの抜けを押さえる構造である。同時に、このエッジ６４部分がホース内の補強糸（耐圧補強繊維Ｆ）を押さえている。その抜け止め機能を高めるために、通常はエッジ６４部分の高さや潰し圧を調整している。しかし、空気圧や水圧に耐え得るホース被覆強度の限界と、潰し圧がエッジ６４の位置するエッジ線上のみに留まることから、耐圧補強繊維Ｆの抜けを防止しきれないこともあり、エッジ６４を通過した耐圧補強繊維Ｆがホース耐圧を失い破裂するという問題を有していた。 As shown in the enlarged side sectional view of FIG. 10, the conventional hose fitting 61 has a structure in which the hose H is crushed at the edge 64 portion to prevent the hose from coming off. At the same time, the edge 64 portion holds down the reinforcing thread (pressure resistant reinforcing fiber F) in the hose. Normally, the height and crushing pressure of the edge 64 portion are adjusted in order to enhance the retaining function. However, since the hose coating strength that can withstand air pressure and water pressure is limited and the crushing pressure stays only on the edge line where the edge 64 is located, it may not be possible to prevent the pressure-resistant reinforcing fiber F from coming off, and the hose passes through the edge 64. There was a problem that the pressure-resistant reinforcing fiber F lost the pressure resistance of the hose and burst.

本発明は、かかる問題点を解決するために創案されたものである。すなわち、本発明の目的は、ホースの耐圧補強繊維を押さえる加圧幅を広げて摩擦抵抗を増加させ、ホース被覆へ負担を掛けずに補強糸の切断（糸抜け）を押さえる構造とすることで、ホース金具の雌型と雄型とのカシメ強度を保持したまま、糸抜けを回避すると共に、ホース金具の付け替えを容易に行うことができるホース金具を提供することにある。 The present invention has been devised to solve such a problem. That is, an object of the present invention is to widen the pressurizing width for pressing the pressure resistant reinforcing fiber of the hose to increase the frictional resistance and to suppress the cutting (thread pulling out) of the reinforcing thread without imposing a burden on the hose coating. It is an object of the present invention to provide a hose metal fitting that can prevent thread coming off while maintaining the caulking strength between the female type and the male type of the hose metal fitting, and can easily replace the hose metal fitting.

本発明は、耐圧補強繊維（Ｆ）で耐圧強化されたホース（Ｈ）の継手として使用されるホース金具（１，４１，５１）であって、
凸型形状の雄型（２１）と、これに螺合連結される筒形状の雌型（３１）と、から成り、
前記雄型（２１）は、貫通穴（２２）を有する金具本体部（２３）に連続して前記雌型（３１）と螺合する雄ねじ部（２４）が形成され、該雄ねじ部（２４）に連続して、ホース（Ｈ）が差し込まれる筒形状のホース差込部（２５）が形成され、かつ該ホース差込部（２５）が該雄ねじ部（２４）から先端に行くほど徐々に太くなるように形成されたものであり、
前記雌型（３１）は、筒状本体部（３２）の内周の一端に前記雄型（２１）の雄ねじ部（２４）に螺合する雌ねじ部（３３）が形成され、該内周の他端にホース（Ｈ）の外周を押さえる円筒状の加圧面（３４）が形成され、該雌ねじ部（３３）と該加圧面（３４）との間に、筒状本体部（３２）内の軸回りにリング状の空間になるようなホース溜り部（３５）が形成され、かつ該加圧面（３４）が該ホース溜り部（３５）から後端に行くほど徐々に太くなるように形成されたものであり、
前記雄型（２１）を、そのホース差込部（２５）にホース（Ｈ）を差し込んだ状態で、前記雌型（３１）に螺合連結した際に、該ホース差込部（２５）の外周面と前記加圧面（３４）とが平行な状態になり、該ホース（Ｈ）を挟み込み、かつ前記ホース溜り部（３５）にホース（Ｈ）の端縁をリング状に硬く圧縮し、抜け止め効果を高めた状態になるように構成された、ことを特徴とする。 The present invention is a hose fitting (1,41,51) used as a joint of a hose (H) whose pressure resistance has been reinforced with a pressure resistant reinforcing fiber (F).
It consists of a male mold (21) with a convex shape and a female mold (31) with a tubular shape that is screwed and connected to the male mold.
In the male mold (21), a male screw portion (24) that is continuously screwed with the female mold (31) is formed in a metal fitting main body portion (23) having a through hole (22), and the male screw portion (24) is formed. A tubular hose insertion portion (25) into which the hose (H) is inserted is continuously formed , and the hose insertion portion (25) gradually becomes thicker toward the tip from the male screw portion (24). It was formed to be
In the female mold (31), a female screw portion (33) screwed to the male screw portion (24) of the male mold (21) is formed at one end of the inner circumference of the tubular main body portion (32), and the inner circumference thereof is formed. A cylindrical pressure surface (34) that presses the outer periphery of the hose (H) is formed at the other end, and the inside of the tubular body portion (32) is formed between the female screw portion (33) and the pressure surface (34). A hose collecting portion (35) is formed around the axis so as to form a ring-shaped space , and the pressurized surface (34) is formed so as to gradually become thicker toward the rear end from the hose collecting portion (35). And
When the male mold (21) is screwed and connected to the female mold (31) with the hose (H) inserted into the hose insertion portion (25), the hose insertion portion (25) is connected. The outer peripheral surface and the pressurized surface (34) are in a parallel state , the hose (H) is sandwiched, and the end edge of the hose (H) is firmly compressed into the hose collecting portion (35) in a ring shape and pulled out. It is characterized in that it is configured to be in a state where the stopping effect is enhanced.

前記雄型（２１）のホース差込部（２５）と、前記雌型（３１）の加圧面（３４）とで、ホース（Ｈ）の外周を押さえる加圧幅（ＰＡ）は、該ホース差込部（２５）の長さの１／３程度の長さである、ことが好ましい。
前記雄型（２１）は、ナット型に形成された金具本体部（２３）を有し、
前記雌型（３１）は、ナット型に形成された筒状本体部（３２）を有する、ことが好ましい。
前記雄型（２１）のホース差込部（２５）の表面に、滑り止め加工面（２６）を有する、ことが好ましい。 The pressure width (PA) for pressing the outer circumference of the hose (H) between the hose insertion portion (25) of the male mold (21) and the pressurizing surface (34) of the female mold (31) is the hose difference. It is preferably about 1/3 of the length of the recess (25).
The male mold (21) has a metal fitting body portion (23) formed in a nut mold, and has a metal fitting main body portion (23).
The female mold (31) preferably has a tubular main body portion (32) formed in a nut mold.
It is preferable that the surface of the hose insertion portion (25) of the male mold (21) has a non-slip processed surface (26).

本発明の構成では、ホース差込部（２５）にホース（Ｈ）を差し込んだ状態で雄型（２１）を、雌型（３１）に螺合連結するだけで、ホース（Ｈ）への強固な取り付けが容易に完了できる。
ホース（Ｈ）は、ホース差込部（２５）の外周面と、加圧面（３４）との間で平行な状態で挟み込まれるので、ホース（Ｈ）内の耐圧補強繊維が抜けづらくなる。即ち、ホースと金具の抜ける原因の糸抜けを抑制し、その結果、ホース（Ｈ）の破裂及び抜けなどの不具合を起きにくく簡単で優れた性能を有する構造であることを特徴とする。従来構造のエッジ外周の先端である「線」でホース（Ｈ）を押さえるのではなく、加圧幅（ＰＡ）部分を設け、「面」で押さえて摩擦抵抗を増加させるため、エッジ部によるホース被覆へ負担を掛けず耐圧補強繊維（Ｆ）の糸抜けを抑制できる。
更に、雌型（３１）に形成されたホース溜り部（３５）により、ホース（Ｈ）の端縁が固く圧縮された状態になり、抜け止め効果を高めている。 In the configuration of the present invention, the male mold (21) is screwed and connected to the female mold (31) with the hose (H) inserted into the hose insertion portion (25), and the hose (H) is firmly attached. Installation can be completed easily.
Since the hose (H) is sandwiched between the outer peripheral surface of the hose insertion portion (25) and the pressure surface (34) in a parallel state, it becomes difficult for the pressure-resistant reinforcing fibers in the hose (H) to come off. That is, it is characterized by having a structure that is simple and has excellent performance, in which the thread pulling out that causes the hose and the metal fittings to come off is suppressed, and as a result, problems such as the hose (H) bursting and coming off are less likely to occur. Instead of pressing the hose (H) with the "line" that is the tip of the outer circumference of the edge of the conventional structure, a pressurizing width (PA) portion is provided and pressed with the "face" to increase frictional resistance, so the hose with the edge portion It is possible to suppress the thread loss of the pressure resistant reinforcing fiber (F) without imposing a burden on the coating.
Further, the hose collecting portion (35) formed in the female mold (31) makes the end edge of the hose (H) firmly compressed, and the effect of preventing the hose from coming off is enhanced.

ホース（Ｈ）の外周を押さえる加圧面（３４）の加圧幅（ＰＡ）は、ホース差込部（２５）の長さの１／３程度の長さであれば、抜け止め効果を得られ易く、逆に、この加圧幅（ＰＡ）が短すぎると、抜け止め効果を得られにくい。また、この加圧幅（ＰＡ）が長すぎると、ホース（Ｈ）を潰しすぎて、被覆を破損するおそれがある。
ナット型に形成された金具本体部（２３）を有する雄型（２１）と、ナット型に形成された筒状本体部（３２）を有する雌型（３１）から成るナット一体型のホース金具は、両者の締め付け、締め外しは工具を用いて容易に実施することができる。
雄型（２１）のホース差込部（２５）の表面には、滑り止め加工面（２６）を施すことができ、この滑り止め加工面（２６）により、摩擦係数を大きくして抜け止め効果を高めることができる。 If the pressure width (PA) of the pressure surface (34) that presses the outer circumference of the hose (H) is about 1/3 of the length of the hose insertion portion (25), a retaining effect can be obtained. On the contrary, if the pressurizing width (PA) is too short, it is difficult to obtain the retaining effect. Further, if the pressure width (PA) is too long, the hose (H) may be crushed too much and the coating may be damaged.
A nut-integrated hose fitting consisting of a male mold (21) having a nut-shaped metal fitting body (23) and a female mold (31) having a nut-shaped tubular body (32) , Both can be easily tightened and removed using a tool.
The surface of the hose insertion portion (25) of the male mold (21) can be provided with a non-slip processed surface (26), and the non-slip processed surface (26) increases the coefficient of friction to prevent slipping out. Can be enhanced.

本発明は、ホース（Ｈ）がホース差込部（２５）の外周面と、加圧面（３４）とが平行な状態で挟み込まれる構成であれば、ホース差込部（２５）は先細り形状、逆に先に行くに従い太くなる形状にしても、ホース（Ｈ）の抜け止め効果がある。このときは加圧面（３４）の形状についてもホース差込部（２５）の形状に合わせる。 In the present invention, if the hose (H) is sandwiched between the outer peripheral surface of the hose insertion portion (25) and the pressure surface (34) in parallel, the hose insertion portion (25) has a tapered shape. On the contrary, even if the shape becomes thicker as it goes ahead, there is an effect of preventing the hose (H) from coming off. At this time, the shape of the pressurized surface (34) is also adjusted to the shape of the hose insertion portion (25).

実施例１のホース金具を示し、（ａ）は雌型の側断面図、（ｂ）は雄型の側面図である。The hose fitting of the first embodiment is shown, (a) is a side sectional view of a female type, and (b) is a side view of a male type. 実施例１のホース金具を示し、ホースを差し込んだ状態で、雌型に雄型を螺合連結した状態の側面図である。The hose metal fitting of the first embodiment is shown, and it is a side view of the state where the male mold is screwed and connected to the female mold with the hose inserted. 実施例１のホース金具を示し、ホースを差し込んだ状態で、雌型に雄型を螺合連結した状態の側断面図である。FIG. 5 is a side sectional view showing a hose fitting of the first embodiment, in which a male mold is screwed and connected to a female mold with the hose inserted. ホースが、ホース差込部の外周面と雌型の加圧面との間で平行な状態で挟み込まれている状態を示す部分拡大側断面図である。It is a partially enlarged side sectional view which shows the state in which a hose is sandwiched in parallel between the outer peripheral surface of a hose insertion part and the pressure surface of a female type. 実施例１のホース差込部の表面に、滑り止め加工面を有する変形例を示す雄型の側面図である。It is a side view of a male type which shows the modification which has the non-slip processed surface on the surface of the hose insertion part of Example 1. FIG. 実施例２のホース金具を示し、（ａ）は雌型の側断面図、（ｂ）は雄型の側面図である。The hose fitting of the second embodiment is shown, (a) is a side sectional view of a female type, and (b) is a side view of a male type. 実施例３のホース金具を示し、（ａ）は雌型の側断面図、（ｂ）は雄型の側面図である。The hose fitting of Example 3 is shown, (a) is a side sectional view of a female type, and (b) is a side view of a male type. 従来の雄型のホース差込部に抜け止めのエッジが形成されたホース金具を示し、（ａ）は雌型の側断面図、（ｂ）は雄型の側面図である。A hose fitting having a retaining edge formed in a conventional male hose insertion portion is shown, (a) is a side sectional view of the female type, and (b) is a side view of the male type. 従来の雄型のホース差込部に抜け止めのエッジが形成されたホース金具を示し、ホースを差し込んだ状態で、雌型に雄型を螺合連結した状態の側断面図である。It is a side sectional view showing a hose metal fitting having a retaining edge formed in a conventional male hose insertion portion, and a state in which a male mold is screwed and connected to a female mold with the hose inserted. 従来のホースが、ホース差込部の外周面と雌型の加圧面との間で平行な状態で挟み込まれている状態を示す部分拡大側断面図である。It is a partially enlarged side sectional view which shows the state which the conventional hose is sandwiched in parallel state between the outer peripheral surface of a hose insertion part, and the pressure surface of a female type.

本発明は、凸型形状の雄型と、これに螺合連結される筒形状の雌型とから成り、この雄型を、そのホース差込部に強化繊維が編み込まれたホースを差し込んだ状態で、雌型に螺合連結した際に、ホース差込部の外周面と、雌型の内周面（加圧面）とが平行な状態で、ホースを挟み込み、かつホース溜り部にホースの端縁が固く圧縮された状態になるように構成されたホース金具である。 The present invention consists of a convex male mold and a tubular female mold that is screwed and connected to the male mold, and this male mold is in a state in which a hose in which reinforcing fibers are woven is inserted into the hose insertion portion. Then, when the hose is screwed and connected to the female mold, the hose is sandwiched in a state where the outer peripheral surface of the hose insertion portion and the inner peripheral surface (pressurized surface) of the female mold are parallel to each other, and the end of the hose is inserted into the hose reservoir. A hose fitting configured so that the edges are tightly compressed.

以下、本発明の好ましい実施の形態を図面で説明する。
＜実施例１のホース金具の構成＞
図１は実施例１のホース金具を示し、（ａ）は雌型の側断面図、（ｂ）は雄型の側面図である。図２は実施例１のホース金具を示し、ホースを差し込み、雌型に雄型を螺合連結した状態の側面図である。
実施例１のホース金具１は、例えば金属製又は合成樹脂製の凸型形状の雄型２１と、これに螺合連結される金属製又は合成樹脂製の筒形状の雌型３１とから成る。このホース金具１は主に耐圧補強繊維Ｆで強化された合成樹脂製ホース等のホースＨの継手として使用される。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
<Structure of hose fitting of Example 1>
1A and 1B show a hose fitting of the first embodiment, FIG. 1A is a side sectional view of a female type, and FIG. 1B is a side view of a male type. FIG. 2 shows a hose fitting of the first embodiment, and is a side view of a state in which a hose is inserted and a male mold is screwed and connected to a female mold.
The hose fitting 1 of the first embodiment is composed of, for example, a convex male mold 21 made of metal or synthetic resin and a tubular female mold 31 made of metal or synthetic resin screwed and connected to the male mold 21. The hose fitting 1 is mainly used as a joint of a hose H such as a synthetic resin hose reinforced with a pressure resistant reinforcing fiber F.

＜雌型の構成＞
雌型３１は、図１（ａ）に示すように、金属製又は合成樹脂製の筒形状の筒状本体部３２の内側の一端に雄型２１の雄ねじ部２４に螺合する雌ねじ部３３が形成された部材である。雌型３１は、他端にホースＨの外周を押さえる円筒状の加圧面３４が形成されている。実施例１のこの加圧面３４は、図示するように円筒形状になっている。 <Female type composition>
As shown in FIG. 1A, the female mold 31 has a female screw portion 33 screwed into the male screw portion 24 of the male mold 21 at one end inside the tubular main body portion 32 having a tubular shape made of metal or synthetic resin. It is a formed member. The female mold 31 has a cylindrical pressure surface 34 formed at the other end thereof to press the outer circumference of the hose H. The pressurized surface 34 of the first embodiment has a cylindrical shape as shown in the figure.

本発明の雌型３１には、雌ねじ部３３と加圧面３４との間に、筒状本体部３２内の軸回りに薄肉になるようなホース溜り部３５が形成されている。このホース溜り部３５は、雌型３１内において形成されるリング形状の空間である。このリング形状の空間内でホースＨの端部が圧縮されて抜け止め効果を高めている。 In the female mold 31 of the present invention, a hose collecting portion 35 having a thin wall around the axis in the tubular main body portion 32 is formed between the female screw portion 33 and the pressure surface 34. The hose reservoir 35 is a ring-shaped space formed in the female mold 31. The end of the hose H is compressed in this ring-shaped space to enhance the retaining effect.

図示例は、工具での取り扱いが容易になるように、雌型３１の外周部がナット形状になるナット一体型の構成のものを示している。但し、このナット一体型の形状に限定されるものではない。ホース金具１の取付場所、使用場所に応じてナット形状以外の様々な形状に変形させることができる。 The illustrated example shows a nut-integrated configuration in which the outer peripheral portion of the female mold 31 has a nut shape so that it can be easily handled by a tool. However, the shape is not limited to the nut-integrated shape. The hose fitting 1 can be deformed into various shapes other than the nut shape depending on the mounting location and the usage location.

＜雄型の構成＞
本発明の雄型２１は、図１（ｂ）に示すように、貫通穴２２を有する金具本体部２３に雌型３１と螺合する雄ねじ部２４が形成された金属製又は合成樹脂製の凸型形状の部材である。
雄型２１は、この雄ねじ部２４に連続して、ホースＨが差し込まれる筒形状のホース差込部２５が形成されている。ホース差込部２５の先端は、ホースＨに差し込みやすいように、先端が細くなっている。図示例は一例で、ホースＨが太くなれば、それに合わせてホース差込部２５の外径も太くする。ホース差込部２５の外径は、ホースＨの内径と略同じになっている。 <Male composition>
As shown in FIG. 1 (b), the male mold 21 of the present invention is a convex metal or synthetic resin in which a male screw portion 24 screwed with the female mold 31 is formed in a metal fitting main body portion 23 having a through hole 22. It is a mold-shaped member.
In the male mold 21, a tubular hose insertion portion 25 into which the hose H is inserted is formed continuously to the male screw portion 24. The tip of the hose insertion portion 25 is tapered so that it can be easily inserted into the hose H. The illustrated example is an example, and as the hose H becomes thicker, the outer diameter of the hose insertion portion 25 also becomes thicker accordingly. The outer diameter of the hose insertion portion 25 is substantially the same as the inner diameter of the hose H.

図示例は、雄型２１についても工具での取り扱いが容易になるように、雄型２１の外周部がナット形状になるナット一体型の構成のものを示している。但し、このナット一体型の形状に限定されるものではない。 The illustrated example shows a nut-integrated type in which the outer peripheral portion of the male mold 21 has a nut shape so that the male mold 21 can be easily handled by a tool. However, the shape is not limited to the nut-integrated shape.

＜雄型と雌型の連結状態＞
図３は実施例１のホース金具を示し、ホースを差し込み、雌型に雄型を螺合連結した状態の側断面図である。図４はホースが、ホース差込部の外周面と雌型の加圧面との間で平行な状態で挟み込まれている状態を示す部分拡大側断面図である
実施例１のホース金具１は、ホース差込部２５にホースＨを差し込んだ状態で、雄型２１を雌型３１に螺合連結して使用する。図３に示すように、この雄型２１と雌型３１を螺合連結した際に、雄型２１のホース差込部２５の外周面と、雌型３１内周の加圧面３４とがそれぞれの面が平行な状態で、ホースＨを挟み込むようになっている。雄型２１のホース差込部２５にホースＨを差し込んだ状態で、雌型３１に螺合連結するだけで、ホースＨへの取り付けが容易に完了する。これにより従来のエッジの先端である「線」でホースＨを押さえるのではなく、ホースＨの耐圧補強繊維Ｆを押さえる加圧幅ＰＡを設けて「面」で押さえて摩擦抵抗を増加させ、ホース被覆へ負担を掛けず耐圧補強繊維Ｆの糸抜けを抑制できる。 <Connected state of male and female>
FIG. 3 shows a hose fitting of the first embodiment, and is a side sectional view showing a state in which a hose is inserted and a male mold is screwed and connected to a female mold. FIG. 4 is a partially enlarged side sectional view showing a state in which the hose is sandwiched between the outer peripheral surface of the hose insertion portion and the pressure surface of the female mold in a parallel state. With the hose H inserted into the hose insertion portion 25, the male mold 21 is screwed and connected to the female mold 31 for use. As shown in FIG. 3, when the male mold 21 and the female mold 31 are screwed and connected, the outer peripheral surface of the hose insertion portion 25 of the male mold 21 and the pressure surface 34 on the inner circumference of the female mold 31 are respectively. The hose H is sandwiched in a state where the surfaces are parallel to each other. With the hose H inserted into the hose insertion portion 25 of the male mold 21, the hose H can be easily attached to the hose H simply by screwing and connecting to the female mold 31. As a result, instead of pressing the hose H with the "wire" that is the tip of the conventional edge, a pressure width PA that presses the pressure resistant reinforcing fiber F of the hose H is provided and pressed with the "face" to increase the frictional resistance of the hose. It is possible to suppress the thread loss of the pressure resistant reinforcing fiber F without imposing a burden on the coating.

このように、ホースＨは、ホース差込部２５の外周面と、雌型３１内周の加圧面３４とが平行な状態で挟み込まれるので、ホースＨの抜け止め効果がある。ホースは平行な面（加圧面３４）で押さえ付けられた状態にある。 As described above, the hose H is sandwiched between the outer peripheral surface of the hose insertion portion 25 and the pressure surface 34 on the inner circumference of the female mold 31 in a parallel state, so that the hose H has an effect of preventing the hose H from coming off. The hose is pressed by a parallel surface (pressurized surface 34).

雄型２１のホース差込部２５と、雌型３１の加圧面３４とで、ホースＨの外周を押さえる加圧幅ＰＡは、ホース差込部２５の長さの１／３程度の長さである。ホースＨの外周を押さえる加圧幅ＰＡは、ホース差込部２５の長さの１／３程度の長さであれば、抜け止め効果を得られ易く、逆に、この加圧幅ＰＡが短すぎると、抜け止め効果を得られにくい。また、この加圧幅ＰＡが長すぎると、ホースＨを潰しすぎて、被覆を破損するおそれがある。 The pressure width PA that presses the outer circumference of the hose H between the hose insertion portion 25 of the male mold 21 and the pressurizing surface 34 of the female mold 31 is about 1/3 of the length of the hose insertion portion 25. be. If the pressure width PA that presses the outer circumference of the hose H is about 1/3 of the length of the hose insertion portion 25, it is easy to obtain a retaining effect, and conversely, the pressure width PA is short. If it is too much, it is difficult to obtain the retaining effect. Further, if the pressure width PA is too long, the hose H may be crushed too much and the coating may be damaged.

更に、実施例１のホース金具１は、ホース溜り部３５にホースＨの端部がリング状に硬く圧縮されるように構成し、抜け止め効果を高めている。 Further, the hose metal fitting 1 of the first embodiment is configured such that the end portion of the hose H is firmly compressed into a ring shape in the hose pool portion 35 to enhance the retaining effect.

＜ホース差込部の変形例＞
図５は実施例１のホース差込部の表面に、滑り止め加工面を有する変形例を示す雄型の側面図である。
実施例１のホース金具１の変形例は、雄型２１のホース差込部２５の表面に、滑り止め加工面２６を形成したものである。雄型２１のホース差込部２５の表面に、滑り止め加工面２６を有するホース金具は、この滑り止め加工面２６と、加圧面３４の内周面の挟み込みにより、ホースＨの耐圧補強繊維Ｆを切断することなく、抜け止め効果を高めることができる。ホースＨをホース差込部２５への差し込みも容易に実施することができる。
なお、雌型３１の加圧面３４には、滑り止め加工面２６を形成することは好ましくない。この雌型３１は雄型２１に螺合締結する際に、ホースＨの外周面に接する部分であるために、ホースＨを摩耗し破損するおそれもあるからである。 <Modification example of hose insertion part>
FIG. 5 is a male side view showing a modified example having a non-slip processed surface on the surface of the hose insertion portion of the first embodiment.
In the modified example of the hose fitting 1 of the first embodiment, the non-slip processed surface 26 is formed on the surface of the hose insertion portion 25 of the male mold 21. The hose metal fitting having the non-slip processed surface 26 on the surface of the hose insertion portion 25 of the male mold 21 is a pressure-resistant reinforcing fiber F of the hose H by sandwiching the non-slip processed surface 26 and the inner peripheral surface of the pressure surface 34. The effect of preventing the hose from coming off can be enhanced without cutting the hose. The hose H can be easily inserted into the hose insertion portion 25.
It is not preferable to form the non-slip processed surface 26 on the pressure surface 34 of the female mold 31. This is because the female mold 31 is a portion in contact with the outer peripheral surface of the hose H when screwed and fastened to the male mold 21, so that the hose H may be worn and damaged.

＜実施例２のホース金具の構成＞
図６は実施例２のホース金具を示し、（ａ）は雌型の側断面図、（ｂ）は雄型の側面図である。
本発明のホース金具４１は、ホースＨを雄型のホース差込部２５の外周面と、雌型の加圧面３４により平行な状態で挟み込まれるので、ホースＨの抜け止め効果があれば、実施例１のように、これらの外周面と加圧面３４が軸方向と正確に同一方向である必要はない。実施例２のホース金具４１は、雄型２１のホース差込部２５が、雄ねじ部２４から先端に行くほど徐々に細くなるように形成され、雌型３１の加圧面３４が、ホース溜り部３５から後端に行くほど徐々に細くなるように形成された構成でも良い。例えば、ホース金具５１の軸方向線から所定の傾斜角（α）を有するホース差込部２５である。雄型２１を、そのホース差込部２５にホースＨを差し込んだ状態で、雌型３１に螺合連結した際に、該ホース差込部２５の外周面と加圧面３４の内周面とが平行になるように構成されていればよい。 <Structure of hose fitting of Example 2>
6A and 6B show the hose fitting of the second embodiment, FIG. 6A is a side sectional view of a female type, and FIG. 6B is a side view of a male type.
The hose metal fitting 41 of the present invention sandwiches the hose H in parallel with the outer peripheral surface of the male hose insertion portion 25 and the female pressure surface 34. As in Example 1, these outer peripheral surfaces and the pressure surface 34 do not have to be in exactly the same direction as the axial direction. The hose metal fitting 41 of the second embodiment is formed so that the hose insertion portion 25 of the male mold 21 gradually becomes thinner from the male screw portion 24 toward the tip, and the pressure surface 34 of the female mold 31 has a hose collecting portion 35. The configuration may be formed so as to gradually become thinner toward the rear end. For example, the hose insertion portion 25 having a predetermined inclination angle (α) from the axial direction line of the hose fitting 51. When the male mold 21 is screwed and connected to the female mold 31 with the hose H inserted into the hose insertion portion 25, the outer peripheral surface of the hose insertion portion 25 and the inner peripheral surface of the pressure surface 34 are connected. It suffices if it is configured to be parallel.

＜実施例３のホース金具の構成＞
図７は実施例３のホース金具を示し、（ａ）は雌型の側断面図、（ｂ）は雄型の側面図である。
同様に、実施例３のホース金具５１は、雄型２１のホース差込部２５が、雄ねじ部２４から先端に行くほど徐々に太くなるように形成され、雌型３１の加圧面３４が、ホース溜り部３５から後端に行くほど徐々に太くなるように形成された構成である。例えば、ホース金具５１の軸方向線から所定の傾斜角（β）を有するホース差込部２５である。雄型２１のホース差込部２５にホースＨを差し込んだ状態で、前記雌型３１に螺合連結した際、該ホース差込部２５の外周面と加圧面３４の内周面とが平行になるように構成されていればよい。 <Structure of hose metal fittings of Example 3>
7A and 7B show the hose fitting of the third embodiment, FIG. 7A is a side sectional view of a female type, and FIG. 7B is a side view of a male type.
Similarly, in the hose metal fitting 51 of the third embodiment, the hose insertion portion 25 of the male mold 21 is formed so as to gradually become thicker toward the tip from the male screw portion 24, and the pressure surface 34 of the female mold 31 is a hose. The structure is formed so that the hose gradually becomes thicker toward the rear end from the pool portion 35. For example, the hose insertion portion 25 having a predetermined inclination angle (β) from the axial direction line of the hose fitting 51. When the hose H is inserted into the hose insertion portion 25 of the male mold 21 and screwed and connected to the female mold 31, the outer peripheral surface of the hose insertion portion 25 and the inner peripheral surface of the pressurizing surface 34 are parallel to each other. It suffices if it is configured to be.

このような実施例２、実施例３のホース金具４１，５１であっても、ホースＨは、ホース差込部２５の外周面と、加圧面３４とが平行な状態で挟み込まれるので、ホースの抜け止め効果がある。ホースは平行な面で押さえ付けられるため、従来のような雌型の抜け止め用のエッジ部分又はホース差込部２５の抜け止め用エッジ部分で被覆を破損、あるいは耐圧補強繊維の糸抜けを抑制できる。 Even in the hose metal fittings 41 and 51 of the second and third embodiments, the hose H is sandwiched between the outer peripheral surface of the hose insertion portion 25 and the pressurizing surface 34 in a parallel state. Has a retaining effect. Since the hose is pressed by parallel surfaces, the coating is damaged at the conventional female-type retaining edge portion or the retaining edge portion of the hose insertion portion 25, or the thread loss of the pressure-resistant reinforcing fiber is suppressed. can.

なお、本発明は、ホースＨの耐圧補強繊維Ｆを押さえる加圧幅ＰＡを広げて摩擦抵抗を増加させ、ホース被覆へ負担を掛けず補強糸の切断（糸抜け）を押さえる構造とすることで、ホース金具１，４１，５１の雌型３１と雄型２１とのカシメ強度を保持したまま、糸抜けを回避すると共に、ホース金具１，４１，５１の付け替えを容易に行うことができる構成であれば、上述した発明の実施の形態に限定されず、本発明の要旨を逸脱しない範囲で種々変更できることは勿論である。 In the present invention, the pressure width PA that presses the pressure resistant reinforcing fiber F of the hose H is widened to increase the frictional resistance, and the structure is such that the cutting (thread pulling out) of the reinforcing thread is suppressed without imposing a burden on the hose coating. , While maintaining the caulking strength between the female mold 31 and the male mold 21 of the hose metal fittings 1, 41, 51, it is possible to prevent the thread from coming off and to easily replace the hose metal fittings 1, 41, 51. If there is, it is of course not limited to the embodiment of the above-mentioned invention, and various changes can be made without departing from the gist of the present invention.

本発明のホース金具は、配管等に使用するホース、チューブ等の端末部に取り付けて利用することができる。 The hose fitting of the present invention can be used by being attached to a terminal portion such as a hose or a tube used for piping or the like.

１，４１，５１ホース金具
２１雄型
２２貫通穴
２３金具本体部
２４雄ねじ部
２５ホース差込部
２６滑り止め加工面
３１雌型
３２筒状本体部
３３雌ねじ部
３４加圧面
３５ホース溜り部
ＰＡ加圧幅
Ｈホース
Ｆ耐圧補強繊維
1,41,51 Hose metal fittings 21 Male type 22 Through hole 23 Metal fittings body part 24 Male threaded part 25 Hose insertion part 26 Non-slip processed surface 31 Female type 32 Cylindrical body part 33 Female threaded part 34 Pressurized surface 35 Hose pool part PA Pressure width H hose F pressure resistant reinforcing fiber

Claims

耐圧補強繊維（Ｆ）で耐圧強化されたホース（Ｈ）の継手として使用されるホース金具（１，４１，５１）であって、
凸型形状の雄型（２１）と、これに螺合連結される筒形状の雌型（３１）と、から成り、
前記雄型（２１）は、貫通穴（２２）を有する金具本体部（２３）に連続して前記雌型（３１）と螺合する雄ねじ部（２４）が形成され、該雄ねじ部（２４）に連続して、ホース（Ｈ）が差し込まれる筒形状のホース差込部（２５）が形成され、かつ該ホース差込部（２５）が該雄ねじ部（２４）から先端に行くほど徐々に太くなるように形成されたものであり、
前記雌型（３１）は、筒状本体部（３２）の内周の一端に前記雄型（２１）の雄ねじ部（２４）に螺合する雌ねじ部（３３）が形成され、該内周の他端にホース（Ｈ）の外周を押さえる円筒状の加圧面（３４）が形成され、該雌ねじ部（３３）と該加圧面（３４）との間に、筒状本体部（３２）内の軸回りにリング状の空間になるようなホース溜り部（３５）が形成され、かつ該加圧面（３４）が該ホース溜り部（３５）から後端に行くほど徐々に太くなるように形成されたものであり、
前記雄型（２１）を、そのホース差込部（２５）にホース（Ｈ）を差し込んだ状態で、前記雌型（３１）に螺合連結した際に、該ホース差込部（２５）の外周面と前記加圧面（３４）とが平行な状態になり、該ホース（Ｈ）を挟み込み、かつ前記ホース溜り部（３５）にホース（Ｈ）の端縁をリング状に硬く圧縮し、抜け止め効果を高めた状態になるように構成された、ことを特徴とするホース金具。 A hose fitting (1, 41, 51) used as a joint of a hose (H) whose pressure resistance has been reinforced with a pressure resistant reinforcing fiber (F).
It consists of a male mold (21) with a convex shape and a female mold (31) with a tubular shape that is screwed and connected to the male mold.
In the male mold (21), a male screw portion (24) that is continuously screwed with the female mold (31) is formed in a metal fitting main body portion (23) having a through hole (22), and the male screw portion (24) is formed. A tubular hose insertion portion (25) into which the hose (H) is inserted is continuously formed, and the hose insertion portion (25) gradually becomes thicker toward the tip from the male screw portion (24). It was formed to be
In the female mold (31), a female screw portion (33) screwed to the male screw portion (24) of the male mold (21) is formed at one end of the inner circumference of the tubular main body portion (32), and the inner circumference thereof is formed. A cylindrical pressure surface (34) that presses the outer periphery of the hose (H) is formed at the other end, and the inside of the tubular body portion (32) is formed between the female screw portion (33) and the pressure surface (34). A hose collecting portion (35) is formed around the axis so as to form a ring-shaped space, and the pressurized surface (34) is formed so as to gradually become thicker toward the rear end from the hose collecting portion (35). And
When the male mold (21) is screwed and connected to the female mold (31) with the hose (H) inserted into the hose insertion portion (25), the hose insertion portion (25) is connected. The outer peripheral surface and the pressurized surface (34) are in a parallel state, the hose (H) is sandwiched, and the end edge of the hose (H) is firmly compressed into the hose collecting portion (35) in a ring shape and pulled out. A hose fitting that is characterized by being configured to have a enhanced stopping effect.

前記雄型（２１）のホース差込部（２５）と、前記雌型（３１）の加圧面（３４）とで、ホース（Ｈ）の外周を押さえる加圧幅（ＰＡ）は、該ホース差込部（２５）の長さの１／３程度の長さである、ことを特徴とする請求項１に記載されたホース金具。 The pressure width (PA) for pressing the outer circumference of the hose (H) between the hose insertion portion (25) of the male mold (21) and the pressurizing surface (34) of the female mold (31) is the hose difference. The hose metal fitting according to claim 1, wherein the length is about 1/3 of the length of the recess (25).

前記雄型（２１）は、ナット型に形成された金具本体部（２３）を有し、
前記雌型（３１）は、ナット型に形成された筒状本体部（３２）を有する、ことを特徴とする請求項１又は２に記載されたホース金具。 The male mold (21) has a metal fitting body portion (23) formed in a nut mold, and has a metal fitting main body portion (23).
The hose fitting according to claim 1 or 2, wherein the female mold (31) has a tubular main body portion (32) formed in a nut mold.

前記雄型（２１）のホース差込部（２５）の表面に、滑り止め加工面（２６）を有する、ことを特徴とする請求項１、２又は３の何れか１項に記載されたホース金具。 The hose according to any one of claims 1, 2 or 3, wherein the surface of the hose insertion portion (25) of the male mold (21) has a non-slip surface (26). Metal fittings.