JP2868207B2 - Hose fittings - Google Patents
Hose fittingsInfo
- Publication number
- JP2868207B2 JP2868207B2 JP8348650A JP34865096A JP2868207B2 JP 2868207 B2 JP2868207 B2 JP 2868207B2 JP 8348650 A JP8348650 A JP 8348650A JP 34865096 A JP34865096 A JP 34865096A JP 2868207 B2 JP2868207 B2 JP 2868207B2
- Authority
- JP
- Japan
- Prior art keywords
- hose
- coating layer
- adhesive
- nipple
- peripheral surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水や気体などの流
体を通す例えば合成樹脂製ホースなどを接続するのに用
いるホース継手、詳しくはホースニップルの外周面に、
これと非接着な材質か或いは接着しても十分な強度が期
待できない材質からなるホースを密閉状に挿着するもの
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose joint for connecting a hose such as a synthetic resin hose through which a fluid such as water or gas flows, and more particularly, to a hose nipple on an outer peripheral surface thereof.
The present invention relates to a hose in which a hose made of a non-adhesive material or a material which cannot be expected to have sufficient strength even when adhered is hermetically inserted.
【０００２】[0002]
【従来の技術】従来、この種のホース継手に対する合成
樹脂製ホースの接続は、ホースバンドによってホースの
末端部をホースニップルに締め付けるか、或いは例えば
特開平８−１７０７７１号公報に開示される如く、ホー
スニップルの外周面とホースの内周面との間に弾性筒体
を設け、この弾性筒体にホースの弾性を利用して差し込
むことにより、一体的に接続するものがある。2. Description of the Related Art Conventionally, a hose made of synthetic resin is connected to a hose joint of this type by fastening the end of the hose to a hose nipple with a hose band or, for example, as disclosed in Japanese Patent Application Laid-Open No. Hei 8-170771. In some cases, an elastic cylinder is provided between the outer peripheral surface of the hose nipple and the inner peripheral surface of the hose, and the elastic cylinder is inserted into the elastic cylinder using the elasticity of the hose to thereby integrally connect the elastic cylinder.
【０００３】[0003]
【発明が解決しようとする課題】しかし乍ら、このよう
な従来のホース継手では、前者の場合、ホースバンドで
締め付けられたホースの末端部が時間の経過により、そ
れを構成する構成樹脂が歪んで漏れが発生するという問
題があった。また、後者の場合には、ホースと弾性筒体
との間及び弾性筒体とホースニップルとの間に夫々必然
的に微小な隙間が形成されるため、ホース内に供給され
た流体の圧力、即ち内圧が何らかの理由によって所定以
上まで上昇すると、該流体が上記微小な隙間に浸入して
漏れ出る恐れがあるという問題がある。特に螺旋補強ホ
ースの場合には、硬質補強線体からなる螺旋リブが軸線
方向へ螺旋状に突出しているため、螺旋リブが突設され
る部分だけを締め付け具でホースニップルへ向け締め付
けても、螺旋リブの間の部分は何ら締め付けられないか
ら、この螺旋リブの間の部分に流体が浸入して漏れ出る
恐れがある。これを防止するには、上記螺旋リブと嵌め
合う凹部を螺旋状に凹設して、螺旋リブが突設される部
分だけでなく該螺旋リブの間の部分も含めて螺旋補強ホ
ースの略全体を締め付けるようにした特殊構造のバンド
を使用する必要があるという問題がある。However, in such a conventional hose joint, in the former case, the end portion of the hose fastened by the hose band is distorted due to the passage of time with the constituent resin. There is a problem that leakage occurs. Further, in the latter case, since a minute gap is inevitably formed between the hose and the elastic cylinder and between the elastic cylinder and the hose nipple, the pressure of the fluid supplied into the hose, That is, if the internal pressure rises to a predetermined level or more for some reason, there is a problem that the fluid may enter the minute gap and leak. Especially in the case of a helical reinforced hose, the helical rib made of a hard reinforcing wire protrudes helically in the axial direction, so even if only the portion where the helical rib is projected is tightened toward the hose nipple with a fastener, Since the portion between the spiral ribs is not tightened at all, there is a risk that fluid may enter the portion between the spiral ribs and leak. In order to prevent this, a concave portion to be fitted with the spiral rib is spirally recessed, so that not only the portion where the spiral rib protrudes but also the entire portion of the spiral reinforcing hose including the portion between the spiral ribs. There is a problem that it is necessary to use a band having a special structure in which the band is tightened.
【０００４】本発明のうち請求項１記載の発明は、時間
経過によりホースが変形せず内圧の上昇に伴ってシール
性を向上させることを目的としたものである。請求項２
記載の発明は、請求項１に記載の発明の目的に加えて、
ホースの材質とホースニップルの材質が非接着な関係で
あっても接着することを目的としたものである。請求項
３記載の発明は、請求項１または２に記載の発明の目的
に加えて、内圧に伴ってホースが被覆層から剥がれるの
を防止することを目的としたものである。請求項４記載
の発明は、請求項３に記載の発明の目的に加えて、螺旋
補強ホースの螺旋リブの締め付けのみで流体の漏れを完
全に防止することを目的としたものである。An object of the present invention is to improve the sealing performance with an increase in internal pressure without deformation of a hose over time. Claim 2
The invention described in addition to the object of the invention described in claim 1,
The purpose is to bond even if the material of the hose and the material of the hose nipple are in a non-bonding relationship. The third aspect of the present invention has the object of preventing the hose from peeling off from the coating layer due to the internal pressure, in addition to the object of the first or second aspect of the present invention. A fourth aspect of the present invention has the object of completely preventing leakage of a fluid only by tightening a spiral rib of a spiral reinforcing hose in addition to the object of the third aspect of the present invention.
【０００５】[0005]
【課題を解決するための手段】前述した目的を達成する
ために、本発明のうち請求項１記載の発明は、ホースニ
ップルの外周面に沿って、ホースと接着可能な材質から
なる被覆層を一体的に周設し、このホースニップルの奥
側周面上に周設された被覆層の基端部と、これに挿着さ
れるホースの末端部とを接着手段で接着し、該基端部を
除くホースニップルの先端側周面上に周設された被覆層
の先端部と、ホースの末端部に連続する非接着端部との
間に、断面略Ｖ字形の空間部を、その鋭角部分が被覆層
の基端部へ向くように周設したことを特徴とするもので
ある。請求項２記載の発明は、請求項１記載の発明の構
成に、前記接着手段が接着剤である構成を加えたことを
特徴とする。請求項３記載の発明は、請求項１または２
記載の発明の構成に、前記ホースの末端部に、少なくと
も末端部の一部を被覆層の基端部へ向け常時押圧する締
め付け具を取り付けた構成を加えたことを特徴とする。
請求項４記載の発明は、請求項３記載の発明の構成に、
前記ホースが螺旋補強ホースであり、その螺旋リブの外
周端に締め付け具を圧接した構成を加えたことを特徴と
する。In order to achieve the above-mentioned object, according to the first aspect of the present invention, a coating layer made of a material that can be bonded to a hose is provided along an outer peripheral surface of a hose nipple. The base end of the coating layer provided on the inner peripheral surface of the hose nipple and the end of the hose inserted thereinto are bonded together by an adhesive means. A space having a substantially V-shaped cross section is formed between the distal end of the coating layer provided around the distal end side peripheral surface of the hose nipple excluding the portion and the non-adhesive end continuous with the end of the hose. It is characterized in that the portion is provided so as to face the base end of the coating layer. A second aspect of the present invention is characterized in that the configuration of the first aspect of the present invention further includes a configuration in which the bonding unit is an adhesive. The invention according to claim 3 is the invention according to claim 1 or 2
The invention according to the invention is characterized in that a configuration is added to the distal end of the hose, in which a fastener that constantly presses at least a part of the distal end toward the base end of the coating layer is attached.
The invention according to claim 4 has the structure of the invention according to claim 3,
The hose is a helical reinforcement hose, and a configuration in which a fastener is pressed against the outer peripheral end of the helical rib is added.
【０００６】[0006]
【作用】請求項１の発明は、断面略Ｖ字形の空間部に入
り込んだ流体の内圧により、被覆層の先端部をホースニ
ップルの先端側周面へ向け押圧する力が作用して、これ
ら被覆層の先端部とホースニップルの先端側周面との間
にある微小な隙間が完全に密閉されるものである。請求
項２の発明は、請求項１記載の構成に対して、前記接着
手段が接着剤である構成を追加したので、被覆層の基端
部とホースの末端部とが接着剤を介して接着される。請
求項３の発明は、請求項１または２記載の構成に対し
て、前記ホースの末端部に、少なくとも末端部の一部を
被覆層の基端部へ向け常時押圧する締め付け具を取り付
けた構成を追加したので、内圧によりホースの非接着端
部をホースの径方向外側へ向け押圧する力が作用して
も、締め付け具でホースの末端部の少なくとも一部を被
覆層の基端部へ向け常時押圧し続けれることにより、ホ
ースの非接着端部がホースの径方向外側へ広がらない。
請求項４の発明は、請求項２記載の構成に対して、前記
ホースが螺旋補強ホースであり、その螺旋リブの外周端
に締め付け具を圧接した構成を追加したので、補強ホー
スの螺旋リブが突設される部分のみを締め付け具で螺旋
状に被覆層の基端部へ向け締め付けれることにより、螺
旋リブがホースの径方向外側へ広がらなくて被覆層から
の剥がれが防止される。According to the first aspect of the present invention, the inner pressure of the fluid that has entered the space having a substantially V-shaped cross section acts to press the distal end of the coating layer toward the distal end side peripheral surface of the hose nipple. A minute gap between the tip of the layer and the peripheral surface on the tip side of the hose nipple is completely sealed. According to the second aspect of the present invention, since the configuration in which the bonding means is an adhesive is added to the configuration of the first aspect, the base end of the coating layer and the end of the hose are bonded via the adhesive. Is done. According to a third aspect of the present invention, in the configuration according to the first or second aspect, a tightening tool for constantly pressing at least a part of the end toward the base end of the coating layer is attached to the end of the hose. Even if a force that presses the non-adhesive end of the hose radially outward due to the internal pressure acts, at least a part of the end of the hose is directed to the base end of the coating layer with the fastener. By being constantly pressed, the non-adhesive end of the hose does not spread radially outward of the hose.
The invention according to claim 4 is the same as the structure according to claim 2, wherein the hose is a spiral reinforcing hose, and a configuration in which a fastener is pressed against the outer peripheral end of the spiral rib is added. Since only the protruding portion is spirally tightened toward the base end of the coating layer by the fastener, the spiral rib does not spread outward in the radial direction of the hose, thereby preventing peeling from the coating layer.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて説明する。この実施例は、図１に示す如く継手本
体Ａの軸線方向一端に、他機への接続するために円筒状
の接続筒部Ａ１を一体に突設して、その外周面に例えば
ネジなどの連結部Ａ２を形成し、該継手本体Ａの軸線方
向他端には、円筒状のホースニップル１を一体に突設
し、このホースニップル１の外周面に、ホースＨとして
例えば塩化ビニルなどの軟質合成樹脂からなる螺旋補強
ホースを挿着するものである。Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 1, a cylindrical connection tube portion A1 is integrally provided at one end in the axial direction of a joint main body A for connection to another machine, and the outer peripheral surface thereof is provided with a screw or the like. A connecting portion A2 is formed, and a cylindrical hose nipple 1 is integrally protruded from the other end in the axial direction of the joint main body A. A hose H is formed on the outer peripheral surface of the hose nipple 1 as a hose H by a soft material such as vinyl chloride. A spiral reinforcing hose made of a synthetic resin is inserted.
【０００８】上記ホースニップル１は、例えばジュラコ
ン、ポリエチレン、ポリプロピレン、ナイロンなどの硬
質合成樹脂や金属などで構成され、その外周面には、そ
の先端側から奥側側へ向かうのに従って外径が徐々に大
きくなるテーパー部１ａを、軸線方向へ複数個周設する
ことにより竹の子状に形成すると共に、これらテーパー
部１ａを含む外周面の略全長に沿って被覆層２を一体的
に周設する。本実施例の場合には、ホースニップル１の
軸線方向先端から２つのテーパー部１ａ1 ，１ａ2 を連
続して周設し、その奥側には、環状凹部１ｂを周設して
いる。また、図示せぬが、上記環状凹部１ｂに代えてテ
ーパー部１ａを周設するなど、ホースニップル１の軸線
方向先端から基端に亙ってテーパー部１ａを３つ以上周
設しても良い。The hose nipple 1 is made of, for example, a hard synthetic resin such as Duracon, polyethylene, polypropylene, nylon or the like, metal, or the like. The outer diameter of the hose nipple is gradually increased from the distal end toward the back. Are formed in a bamboo shoot shape by providing a plurality of tapered portions 1a in the axial direction, and the coating layer 2 is integrally provided along substantially the entire length of the outer peripheral surface including the tapered portions 1a. In the case of this embodiment, two tapered portions 1a 1 and 1a 2 are continuously provided from the axial end of the hose nipple 1, and an annular concave portion 1b is provided on the back side. Although not shown, three or more tapered portions 1a may be provided from the axial end to the base end of the hose nipple 1, for example, by providing a tapered portion 1a instead of the annular concave portion 1b. .
【０００９】被覆層２は、上記ホースニップル１に挿着
されるホースＨの材質と接着可能な材質、詳しくはホー
スＨと同材質か又はそれに類似した材質、本実施例の場
合には、例えば塩化ビニルなどの軟質合成樹脂からなる
熱収縮チューブを使用し、この熱収縮チューブを上記テ
ーパー部１ａ1 ，１ａ2 及び環状凹部１ｂを覆うように
挿着した後に、該熱収縮チューブを加熱することによ
り、収縮させて先端側テーパー部１ａ1 の先端縁から環
状凹部１ｂの奥側端縁まで外周面全長に亙り被覆してい
る。また、上記熱収縮チューブを使用せずに、上記テー
パー部１ａ1 ，１ａ2 及び凹部１ｃをコーティング液中
に浸漬して、外周面全長に亙り被覆しても良い。The coating layer 2 is made of a material that can be adhered to the material of the hose H inserted into the hose nipple 1, more specifically, the same material as the hose H or a material similar thereto. using the heat-shrinkable tube made of soft synthetic resin such as vinyl chloride, the heat-shrinkable tube after insertion so as to cover the tapered portion 1a 1, 1a 2, and the annular recess 1b, heating the heat shrinkable tube that by and covers over the outer peripheral surface full length is contracted from the distal edge of the distal side tapered portion 1a 1 to the back side edge of the annular recess 1b. Instead of using the heat-shrinkable tube, the tapered portions 1a 1 and 1a 2 and the concave portion 1c may be immersed in a coating liquid to cover the entire outer peripheral surface.
【００１０】そして、上記ホースニップル１の奥側周面
を構成する奥側テーパー部１ａ2 及び環状凹部１ｂ上に
周設された被覆層２の基端部２ａの外周面と、これに挿
着されるホースＨの末端部Ｈ１の内周面とを、接着手段
３によって接着し、該基端部２ａを除くホースニップル
１の先端側周面である先端側テーパー部１ａ1 上に周設
された被覆層２の先端部２ｂと、ホースＨの末端部Ｈ１
に連続する非接着端部Ｈ２との間には、ホースニップル
１の先端側へ向かうのに従って内径が徐々に小さくなる
断面略Ｖ字形の空間部４を、その鋭角部分４ａが被覆層
２の基端部２ａへ向くように周設する。上記接着手段３
としては、前記ホースＨ及び被覆層２と強い接着力を得
られるように、これら両者の材質と同材質の接着剤を使
用することが好ましいが、ホースＨ及び被覆層２の材質
と同材質に近いものでも良く、また特にホースニップル
１及びホースＨの材質が共に熱可塑性樹脂製である場合
には、上記接着剤に代えて高周波溶着しても良い。本実
施例の場合には、被覆層２の基端部２ａ表面にホースＨ
及び被覆層２の材質と同材質の接着剤３を塗布し、この
接着剤３上までホースＨの末端部Ｈ１を挿入して、これ
ら基端部２ａの外周面と末端部Ｈ１の内周面との間に接
着剤３を挟み込むことにより、基端部２ａ及び末端部Ｈ
１が接着剤３を介して接着されている。[0010] Then, the outer peripheral surface of the inner side tapered portion 1a 2 and the annular recess 1b on the circumferentially provided by the coating layer 2 base end portion 2a constituting the inner side circumferential surface of the hose nipple 1, inserted into this an inner peripheral surface of the distal portion H1 of the hose H to be, bonded by the adhesive means 3 is provided around on the tip end side tapered portion 1a 1 is a front end side circumferential surface of the hose nipple 1 except the base end portion 2a Tip 2b of the coating layer 2 and the end H1 of the hose H
Between the non-adhesive end portion H2 and the non-adhesive end portion H2, a space portion 4 having a substantially V-shaped cross section whose inner diameter gradually decreases toward the distal end side of the hose nipple 1 is formed. It is provided so as to face the end 2a. The bonding means 3
It is preferable to use an adhesive of the same material as the material of the hose H and the coating layer 2 so as to obtain a strong adhesive force with the hose H and the coating layer 2. A similar material may be used, and when the material of the hose nipple 1 and the hose H are both made of a thermoplastic resin, high-frequency welding may be used instead of the above adhesive. In the case of the present embodiment, the hose H is provided on the surface of the base 2a of the coating layer 2.
An adhesive 3 of the same material as that of the coating layer 2 is applied, and the distal end portion H1 of the hose H is inserted up to the adhesive 3 so that the outer peripheral surface of the base end portion 2a and the inner peripheral surface of the distal end portion H1. Between the base end 2a and the end H
1 is bonded via an adhesive 3.
【００１１】更に、前記ホースＨを例えばダクトホース
として使用する時などのように、該ホースＨ内に供給さ
れる水や気体などの流体の圧力が上記接着剤３による接
着強度より高く可能性のある場合には、必要に応じて前
記ホースＨの末端部Ｈ１には、少なくとも末端部Ｈ１の
一部を被覆層２の基端部２ａへ向け常時押圧する締め付
け具５を取り付ける。本実施例の場合には、締め付け具
５として円筒形状の平バンドか又はカラーを使用し、螺
旋補強ホースＨの外面に巻き付けられた硬質補強線体Ｈ
３からなる螺旋リブＨ４の外周端に圧接することによ
り、該螺旋リブＨ４が突設される部分のみを螺旋状に被
覆層２の基端部２ａへ向け締め付けている。Further, when the hose H is used as a duct hose, for example, the pressure of a fluid such as water or gas supplied into the hose H may be higher than the adhesive strength of the adhesive 3. In some cases, if necessary, a fastener 5 that constantly presses at least a part of the end portion H1 toward the base end portion 2a of the coating layer 2 is attached to the end portion H1 of the hose H. In the case of the present embodiment, a rigid reinforcing wire H wound around the outer surface of a spiral reinforcing hose H using a cylindrical flat band or a collar as the fastening tool 5 is used.
By pressing against the outer peripheral end of the helical rib H4 made of No. 3, only the portion where the helical rib H4 protrudes is helically tightened toward the base end 2a of the coating layer 2.
【００１２】次に、斯かるホース継手の作用について説
明する。先ず、ホースＨ内に水や気体などの流体が供給
されると、この流体により内圧Ｐがかかる。図２に示す
如く断面略Ｖ字形の空間部４では、これに流入した流体
が鋭角部分４ａで止められるから、該空間部４で常時か
かる内圧Ｐにより、被覆層２の先端部２ｂとホースＨの
非接着端部Ｈ２とを、互いに押し広げる方向へ押圧する
力Ｐ１，Ｐ２が作用して、Ｕパッキンと同様なシール効
果が得られる。Next, the operation of the hose joint will be described. First, when a fluid such as water or gas is supplied into the hose H, an internal pressure P is applied by the fluid. As shown in FIG. 2, in the space 4 having a substantially V-shaped cross section, the fluid flowing into the space 4 is stopped at the acute angle portion 4a. And the non-adhesive end portions H2 of the first and second non-adhesive ends H2 are pressed in a direction in which the non-adhesive end portions H2 are spread.
【００１３】詳しくは、内圧Ｐにより被覆層２の先端部
２ｂをホースニップル１の先端側周面である先端側テー
パー部１ａ1 へ向け押圧する力Ｐ１が作用するため、こ
れら被覆層２の先端部２ｂ及び基端部２ａと、上記ホー
スニップル１のテーパー部１ａ1 ，１ａ2 及び環状凹部
１ｂとの間に微小な隙間Ｃが存在したとしても、この微
小な隙間は、特に被覆層２の先端部２ｂと先端側テーパ
ー部１ａ1 との部分で完全に密閉されて流体が入り込ま
ない。しかも、内圧Ｐが上昇するのに従って、被覆層２
の先端部２ｂを先端側テーパー部１ａ1 に押圧する力Ｐ
１も大きくなるため、流体の内圧Ｐが著しく上昇して
も、上記微小な隙間Ｃから漏れ出ることはない。[0013] Specifically, for a force P1 which presses toward the tip portion 2b of the covering layer 2 by the internal pressure P to the distal side tapered portion 1a 1 is a front end side circumferential surface of the hose nipple 1, of the covering layer 2 tip Even if there is a small gap C between the portion 2b and the base end 2a and the tapered portions 1a 1 and 1a 2 of the hose nipple 1 and the annular concave portion 1b, this small gap is particularly caused by the coating layer 2. does not enter the fluid is completely sealed at the portion of the tip portion 2b and the distal side tapered portion 1a 1. Moreover, as the internal pressure P increases, the coating layer 2
Power P for pressing the tip portion 2b to the distal end side tapered portion 1a 1
Therefore, even if the internal pressure P of the fluid increases significantly, the fluid does not leak from the minute gap C.
【００１４】また、上記内圧ＰによりホースＨの非接着
端部Ｈ２をホースＨの径方向外側へ向け放射状に押圧す
る力Ｐ２が作用するものの、接着剤３で被覆層２の基端
部２ａとホースＨの末端部Ｈ１が接着され、通常では該
接着剤３による接着力の方が内圧Ｐによる押圧する力Ｐ
２に比べ大きいから、該末端部Ｈ１は接着剤３及び又は
被覆層２の基端部２ａから剥がれないと共に、ホースＨ
の自体が有する剛性の範囲内であれば、外方へ膨出変形
することもない。Although the force P2 for radially pressing the non-adhesive end portion H2 of the hose H outward in the radial direction of the hose H due to the internal pressure P acts, the adhesive 3 forms the base end portion 2a of the coating layer 2 with the adhesive 3. The end portion H1 of the hose H is adhered. Usually, the adhesive force of the adhesive 3 is greater than the pressing force P due to the internal pressure P.
2, the end portion H1 is not peeled off from the adhesive 3 and / or the base end portion 2a of the coating layer 2, and the hose H
As long as it is within the rigidity range of itself, it does not swell and deform outward.
【００１５】長期に亙る使用に伴って上記接着剤３によ
る接着力が低下するなどの理由により、もし内圧Ｐによ
る押圧力Ｐ２の方が大きくなったとしても、図１に示す
如く締め付け具５によりホースＨの末端部Ｈ１の少なく
とも一部を被覆層２の基端部２ａへ向け常時押圧し続け
れば、該末端部Ｈ１はホースＨの径方向外側へ広がらな
いので、接着剤３及び又は被覆層２の基端部２ａから剥
がれない。更に、締め付け具５は、少なくとも螺旋リブ
Ｈ４が突設される部分のみを螺旋状に被覆層２の基端部
２ａへ向け締め付ければ、径方向外側へ向け広がるのを
防止できるので、該締め付け具５の形状も、硬質補強線
体Ｈ３の螺旋リブＨ４と嵌め合う凹部を螺旋状に凹設し
て、螺旋リブＨ４が突設される部分だけでなく該螺旋リ
ブＨ４の間の部分も含めて末端部Ｈ１の略全体を締め付
けるようにした特殊構造のバンドを使用しなくとも良
い。Even if the pressing force P2 due to the internal pressure P becomes larger due to the reason that the adhesive force by the adhesive 3 is reduced with the use over a long period of time, as shown in FIG. If at least a part of the end portion H1 of the hose H is continuously pressed toward the base end portion 2a of the coating layer 2, the end portion H1 does not spread outward in the radial direction of the hose H, so that the adhesive 3 and / or the coating layer 2 does not come off from the base end 2a. Furthermore, the fastening tool 5 can be prevented from spreading radially outward by tightening at least only the portion where the spiral rib H4 protrudes toward the base end portion 2a of the coating layer 2 in a spiral shape. The shape of the tool 5 also includes a concave portion that fits with the spiral rib H4 of the hard reinforcing wire H3 in a spiral shape, and includes not only a portion where the spiral rib H4 protrudes but also a portion between the spiral ribs H4. It is not necessary to use a band of a special structure in which the entire end H1 is tightened.
【００１６】尚、前示実施例では、継手本体Ａの軸線方
向一端に、他機への接続するために円筒状の接続筒部Ａ
１を一体に突設したが、これに限定されず、接続筒部Ａ
１を一体に突設しなくとも良い。またホースニップル１
の外周面に、ホースＨとして例えば塩化ビニルなどの軟
質合成樹脂からなる螺旋補強ホースを挿着したが、これ
に限定されず、螺旋リブＨ４の無い形状のホースや材質
が異なる例えばゴム製のホースなど、あらゆるホースで
あっても前示したもののと同様な作用が得られる。更に
締め付け具５の形状も前述したものに限定されず、少な
くとも螺旋リブＨ４が突設される部分のみを螺旋状に被
覆層２の基端部２ａへ向け締め付ければ、他の構造であ
っても良い。In the embodiment described above, a cylindrical connecting tube portion A for connecting to another machine is connected to one end of the joint body A in the axial direction.
1, but is not limited to this, and is not limited to this.
It is not necessary to project 1 integrally. Also hose nipple 1
A spiral reinforcing hose made of a soft synthetic resin such as vinyl chloride is inserted as the hose H into the outer peripheral surface of the hose. However, the hose is not limited to this, and a hose having no spiral rib H4 or a rubber hose different in material is used. For example, the same operation as that shown above can be obtained with any hose. Further, the shape of the fastening tool 5 is not limited to the above-described one. If at least only the portion where the spiral rib H4 is projected is spirally fastened toward the base end portion 2a of the coating layer 2, another structure is obtained. Is also good.
【００１７】[0017]
【発明の効果】以上説明したように、本発明のうち請求
項１記載の発明は、断面略Ｖ字形の空間部に入り込んだ
流体の内圧により、被覆層の先端部をホースニップルの
先端側周面へ向け押圧する力が作用して、これら被覆層
の先端部とホースニップルの先端側周面との間にある微
小な隙間が完全に密閉されるので、時間経過によりホー
スが変形せず内圧の上昇に伴ってシール性を向上でき
る。従って、ホースバンドで締め付けられたホースの末
端部が時間の経過により、それを構成する構成樹脂が歪
んで漏れが発生する従来のものに比べ、長期に亙る使用
でも流体の漏れを完全に防止できる。また、ホースと弾
性筒体との間及び弾性筒体とホースニップルとの間に夫
々必然的に微小な隙間が形成される従来のものに比べ、
内圧が所定以上まで上昇しても流体の漏れを完全に防止
できる。As described above, according to the first aspect of the present invention, according to the present invention, the distal end portion of the hose nipple is moved around the distal end of the hose nipple by the internal pressure of the fluid entering the space having a substantially V-shaped cross section. The force that presses against the surface acts, and the minute gap between the tip of these coating layers and the peripheral surface on the tip side of the hose nipple is completely sealed. The sealing property can be improved with the rise of the height. Therefore, leakage of fluid can be completely prevented even when used for a long period of time, as compared with the conventional one in which the end portion of the hose fastened by the hose band is distorted with time and the constituent resin constituting the hose is leaked. . Also, compared to the conventional one in which a minute gap is inevitably formed between the hose and the elastic cylinder and between the elastic cylinder and the hose nipple, respectively.
Even if the internal pressure rises to a predetermined level or more, leakage of the fluid can be completely prevented.
【００１８】請求項２の発明は、請求項１の発明の効果
に加えて、被覆層の基端部とホースの末端部とが接着剤
を介して接着されるので、ホースの材質とホースニップ
ルの材質が非接着な関係であっても接着できる。従っ
て、ホース及びホースニップルの材質が特定なものに限
定されないから、便利である。According to a second aspect of the present invention, in addition to the effect of the first aspect, the base end of the coating layer and the end of the hose are bonded via an adhesive, so that the material of the hose and the hose nipple are improved. Can be bonded even if the materials are not bonded. Therefore, the material of the hose and the hose nipple is not limited to a specific material, which is convenient.
【００１９】請求項３の発明は、請求項１または２の発
明の効果に加えて、内圧によりホースの非接着端部をホ
ースの径方向外側へ向け押圧する力が作用しても、締め
付け具でホースの末端部の少なくとも一部を被覆層の基
端部へ向け常時押圧し続けれることにより、ホースの非
接着端部がホースの径方向外側へ広がらないので、内圧
に伴ってホースが被覆層から剥がれるのを防止できる。According to a third aspect of the present invention, in addition to the effects of the first or second aspect, even if a force for pressing the non-adhesive end of the hose outward in the radial direction of the hose due to the internal pressure acts on the fastener, By continuously pressing at least a part of the end of the hose toward the base end of the coating layer, the non-adhesive end of the hose does not spread outward in the radial direction of the hose, so the hose is covered with internal pressure. Peeling from the layer can be prevented.
【００２０】請求項４の発明は、請求項３の発明の効果
に加えて、補強ホースの螺旋リブが突設される部分のみ
を締め付け具で螺旋状に被覆層の基端部へ向け締め付け
れることにより、螺旋リブがホースの径方向外側へ広が
らなくて被覆層からの剥がれが防止されるので、螺旋補
強ホースの螺旋リブの締め付けのみで流体の漏れを完全
に防止できる。従って、螺旋リブと嵌め合う凹部を螺旋
状に凹設して、螺旋リブが突設される部分だけでなく該
螺旋リブの間の部分も含めて螺旋補強ホースの略全体を
締め付けるようにした特殊構造のバンドを使用する必要
がなくなって、例えば円筒形状などの単純な構造のもの
で良く、締め付け具の構造を簡素化できてコストの低減
化も図れる。According to a fourth aspect of the present invention, in addition to the effect of the third aspect of the present invention, only the portion of the reinforcing hose at which the spiral rib protrudes is helically tightened toward the base end of the coating layer by a fastener. Thus, the spiral rib does not spread outward in the radial direction of the hose and is prevented from peeling off from the coating layer. Therefore, leakage of the fluid can be completely prevented only by tightening the spiral rib of the spiral reinforcing hose. Therefore, a concave portion that fits with the spiral rib is formed in a spiral shape so that not only the portion where the spiral rib protrudes but also the entire portion of the spiral reinforcing hose including the portion between the spiral ribs is tightened. There is no need to use a band having a structure, and a simple structure such as a cylindrical shape may be used. The structure of the fastener can be simplified, and the cost can be reduced.
【図１】本発明の一実施例を示すホース継手の縦断正面
図である。FIG. 1 is a vertical sectional front view of a hose joint according to an embodiment of the present invention.
【図２】要部を拡大して示す縦断正面図である。FIG. 2 is a longitudinal sectional front view showing a main part in an enlarged manner.
Ｈ ホース、螺旋補強ホース Ｈ１ 末端部 Ｈ２ 非接着端部 Ｈ４ 螺旋リブ １ ホースニップル １ａ1 先端側周面（先端側テーパー部） １ａ2 奥側周面（奥側テーパー部） １ｂ 奥側周面（環状凹部） ２ 被覆層 ２ａ 基端部 ２ｂ 先端部 ３ 接着手段、接着剤 ４ 空間部 ４ａ 鋭角部分 ５ 締め付け具H Hose, spiral reinforcement hose H1 End portion H2 Non-adhesive end portion H4 Spiral rib 1 Hose nipple 1a 1 Tip side peripheral surface (tip side taper portion) 1a 2 Back side peripheral surface (back side taper portion) 1b Back side peripheral surface ( (Annular concave portion) 2 coating layer 2a base end 2b tip 3 adhesive means, adhesive 4 space 4a acute angle portion 5 fastening tool
Claims (4)
と非接着な材質か或いは接着しても十分な強度が期待で
きない材質からなるホース（Ｈ）を密閉状に挿着するホ
ース継手において、前記ホースニップル（１）の外周面
に沿って、ホース（Ｈ）と接着可能な材質からなる被覆
層（２）を一体的に周設し、このホースニップル（１）
の奥側周面（１ａ2 ，１ｂ）上に周設された被覆層
（２）の基端部（２ａ）と、これに挿着されるホース
（Ｈ）の末端部（Ｈ１）とを接着手段（３）で接着し、
該基端部（２ａ）を除くホースニップル（１）の先端側
周面（１ａ1 ）上に周設された被覆層（２）の先端部
（２ｂ）と、ホース（Ｈ）の末端部（Ｈ１）に連続する
非接着端部（Ｈ２）との間に、断面略Ｖ字形の空間部
（４）を、その鋭角部分（４ａ）が被覆層（２）の基端
部（２ａ）へ向くように周設したことを特徴とするホー
ス継手。1. A hose joint in which a hose (H) made of a material which is not adhered to the hose nipple (1) or a material which cannot be expected to have sufficient strength even when adhered is hermetically inserted into an outer peripheral surface of the hose nipple (1). A coating layer (2) made of a material that can be bonded to the hose (H) is integrally provided along the outer peripheral surface of the hose nipple (1), and the hose nipple (1)
Bonding the base end (2a) of the coating layer (2) provided on the back side peripheral surface (1a 2 , 1b) to the end (H1) of the hose (H) inserted therein. Bonded by means (3),
Tip of the base end front end side circumferential surface of the (2a) hose nipple (1) except for (1a 1) coating layer provided around on (2) (2b), and is transported end of the hose (H) ( A space (4) having a substantially V-shaped cross section between the non-adhesive end (H2) continuous with H1) and an acute angle portion (4a) of the space (4a) faces the base end (2a) of the coating layer (2). A hose joint characterized by being provided in such a manner.
項１記載のホース継手。2. A hose joint according to claim 1, wherein said bonding means is an adhesive.
少なくとも末端部（Ｈ１）の一部を被覆層（２）の基端
部（２ａ）へ向け常時押圧する締め付け具（５）を取り
付けた請求項１または２記載のホース継手。3. An end (H1) of the hose (H),
The hose joint according to claim 1 or 2, further comprising a fastener (5) for constantly pressing at least a part of the distal end (H1) toward the base end (2a) of the coating layer (2).
り、その螺旋リブ（Ｈ４）の外周端に締め付け具（５）
を圧接した請求項３記載のホース継手。4. The hose (H) is a spiral reinforcing hose, and a fastener (5) is attached to an outer peripheral end of the spiral rib (H4).
The hose joint according to claim 3, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8348650A JP2868207B2 (en) | 1996-12-26 | 1996-12-26 | Hose fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8348650A JP2868207B2 (en) | 1996-12-26 | 1996-12-26 | Hose fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10185051A JPH10185051A (en) | 1998-07-14 |
| JP2868207B2 true JP2868207B2 (en) | 1999-03-10 |
Family
ID=18398438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8348650A Expired - Lifetime JP2868207B2 (en) | 1996-12-26 | 1996-12-26 | Hose fittings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2868207B2 (en) |
-
1996
- 1996-12-26 JP JP8348650A patent/JP2868207B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10185051A (en) | 1998-07-14 |
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