JPH04296285A - Hose joint - Google Patents

Hose joint

Info

Publication number
JPH04296285A
JPH04296285A JP3060479A JP6047991A JPH04296285A JP H04296285 A JPH04296285 A JP H04296285A JP 3060479 A JP3060479 A JP 3060479A JP 6047991 A JP6047991 A JP 6047991A JP H04296285 A JPH04296285 A JP H04296285A
Authority
JP
Japan
Prior art keywords
nipple
sleeve
ring member
base
hose joint
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.)
Pending
Application number
JP3060479A
Other languages
Japanese (ja)
Inventor
Masaki Kumazaki
雅規 熊崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP3060479A priority Critical patent/JPH04296285A/en
Publication of JPH04296285A publication Critical patent/JPH04296285A/en
Pending legal-status Critical Current

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Landscapes

  • Joints That Cut Off Fluids, And Hose Joints (AREA)

Abstract

PURPOSE:To perform a clamping job uniformly and easily in use of mechanical component deformation by forming a base, a nipple and a sleeve of a hose joint separately each, and facilitating the manufacture and assembly of these elements, while clamping them tight with a form memory alloyed ring member. CONSTITUTION:When a hose joint is manufactured, a base 1, a nipple 2 and a sleeve 3 are formed separately each in advance. At this time, the base 1 is composed of a central part 10 with a through hole 11 and a tapered seat surface 12, an engaging part 13 with an internal thread and a tubular part 14. First a ring member 4 consisting of a form memory alloy is set up in the tubular part 14, and one end of the nipple 2 is inserted into an interval between them. Next, one end of the sleeve 3 is inserted into an interval between the nipple 2 and the ring member 4 at a position of the tubular part 14. Subsequently, the ring member 4 is heated, and the form memory alloy is deformed so as to have the volume contracted. With this constitution, the sleeve 3 and the nipple 2 are also contracted and thereby made contact with the tubular part 14 under pressure.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、ホースの端部に締結さ
れホースを他部品に接続するのに用いられるホース継手
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose joint that is fastened to the end of a hose and used to connect the hose to other parts.

【0002】0002

【従来の技術】図5に従来用いられているホース継手を
示す。このホース継手は、他部品と螺合により接続され
る雌タイプ口金よりなる基部100と、基部100と一
体的に形成され、軸方向に突出するニップル101と、
ニップル101にカシメにより結合されたスリーブ20
0とから構成される。このホース継手では、ニップル1
01の外周表面とスリーブ200の内周表面で囲まれた
断面リング状の空間にホースが挿入され、スリーブ20
0を内径側へ機械的に縮径することでカシメてホースに
締結される。
2. Description of the Related Art FIG. 5 shows a conventionally used hose joint. This hose joint includes a base 100 made of a female type cap that is connected to other parts by screwing, a nipple 101 that is integrally formed with the base 100 and projects in the axial direction.
Sleeve 20 joined to nipple 101 by caulking
It consists of 0. With this hose fitting, nipple 1
A hose is inserted into a space having a ring-shaped cross section surrounded by the outer circumferential surface of the sleeve 200 and the inner circumferential surface of the sleeve 200.
By mechanically reducing the diameter of 0 to the inner diameter side, it is caulked and fastened to the hose.

【0003】ところでこのホース継手は、基部100と
ニップル101とは一般に切削加工により製造される。 しかしこのような複雑な形状を切削加工で形成する場合
、工数及び材料のロスが大きいという問題がある。そこ
で図6に示すように、基部103とニップル104とを
それぞれ別体として形成し、その後ロウ付けにより一体
的に接合されたホース継手も用いられている。
[0003] In this hose joint, the base 100 and the nipple 101 are generally manufactured by cutting. However, when forming such a complicated shape by cutting, there is a problem in that the loss of man-hours and materials is large. Therefore, as shown in FIG. 6, a hose joint is also used in which a base 103 and a nipple 104 are formed separately and then integrally joined by brazing.

【0004】0004

【発明が解決しようとする課題】しかしながら上記ホー
ス継手においても、ロウ付けに要する工数は比較的大き
く、さらなる製造工数の低減が求められている。またロ
ウ付け部分におけるシール性の信頼性を確保するための
検査工数が大きいという不具合もある。本発明はこのよ
うな事情に鑑みてなされたものであり、ロウ付け工程を
廃止して製造時の工数を低減するとともに、シール性の
信頼性を向上させることを目的とする。
However, even in the above-mentioned hose joint, the number of man-hours required for brazing is relatively large, and there is a need to further reduce the number of manufacturing man-hours. Another problem is that it requires a large number of inspection steps to ensure reliable sealing at the brazed portion. The present invention has been made in view of these circumstances, and aims to reduce the number of man-hours during manufacturing by eliminating the brazing process, and to improve the reliability of sealing performance.

【0005】[0005]

【課題を解決するための手段】上記課題を解決する本発
明のホース継手は、軸方向に貫通する貫通孔と、一端側
に形成され他部品と係合固定される係合部と、貫通孔と
同軸的に形成され他端側へ突出する筒部と、をもつ厚肉
の基部と、筒状をなし一端が筒部を覆って挿着されたニ
ップルと、ニップルより大径の筒状をなし一端が縮径さ
れて筒部上でニップルを覆って挿着されたスリーブと、
筒部上で縮径する方向へ形状記憶変形し筒部の外周表面
との間でニップル及びスリーブを一体的に挟持する形状
記憶合金製リング部材と、からなることを特徴とする。
[Means for Solving the Problems] A hose joint of the present invention that solves the above problems has a through hole penetrating in the axial direction, an engaging portion formed on one end side that engages and fixes with another component, and a through hole. a thick-walled base having a cylindrical part formed coaxially with the cylindrical part and protruding toward the other end; a nipple having a cylindrical shape and having one end inserted so as to cover the cylindrical part; and a cylindrical part having a diameter larger than that of the nipple. A sleeve whose diameter is reduced at one end and is inserted over the tube part to cover the nipple;
It is characterized by comprising a shape memory alloy ring member that undergoes shape memory deformation in the direction of diameter reduction on the cylindrical portion and integrally sandwiches the nipple and the sleeve with the outer circumferential surface of the cylindrical portion.

【0006】本発明の最大の特徴は、基部、ニップル及
びスリーブをそれぞれ別体として形成するとともに、形
状記憶合金製リング部材でニップル及びスリーブを基部
と一体的に締結しているところにある。形状記憶合金製
リング部材は、形状記憶合金からリング状に形成され、
所定の内径を有した状態で形状記憶される。それを拡径
した状態で、基部、ニップル及びスリーブを組付けた後
にスリーブの外側に組付けられ、所定温度に加熱される
ことにより形状記憶変形し縮径して形成されたものであ
る。このリング部材としては、Ni−Ti合金、Cu−
Zn−Al合金などの形状記憶合金から形成することが
できる。
The greatest feature of the present invention is that the base, nipple, and sleeve are each formed separately, and the nipple and sleeve are integrally fastened to the base using a ring member made of a shape memory alloy. The shape memory alloy ring member is formed in a ring shape from a shape memory alloy,
The shape is memorized with a predetermined inner diameter. After the base, nipple, and sleeve are assembled in the enlarged state, it is assembled to the outside of the sleeve, and when heated to a predetermined temperature, it undergoes shape memory deformation and becomes smaller in diameter. This ring member is made of Ni-Ti alloy, Cu-
It can be formed from a shape memory alloy such as a Zn-Al alloy.

【0007】なお、ニップル及びスリーブの基部に締結
される端部に、径方向外方あるいは内方へ突出する係止
部を設け、リング部材あるいは基部と係止するように構
成することも好ましい。このようにすればニップル及び
スリーブの、リング部材あるいは基部に対する軸方向の
相対移動が確実に防止される。
[0007] It is also preferable that a locking portion protruding radially outward or inward is provided at the end portion of the nipple and the sleeve to be fastened to the base portion, so as to be configured to lock with the ring member or the base portion. In this way, relative movement of the nipple and sleeve in the axial direction with respect to the ring member or the base is reliably prevented.

【0008】[0008]

【発明の作用及び効果】本発明のホース継手では、基部
、ニップル及びスリーブをそれぞれ別体として形成する
ことにより、それぞれの形状は単純となるため小さな工
数で製造することができる。そして締結前の状態では、
それぞれを容易に組付けることができる。次に形状記憶
合金製リング部材で締結するのであるが、リング部材は
予め拡径されているので、容易にスリーブの外側へ組付
けることができる。そして加熱することにより、リング
部材は所定の内径に1way変形し縮径する。するとス
リーブ及びニップルはリング部材の縮径の力を受けて縮
径し、リング部材と基部との間で挟持された状態で締結
される。
Effects and Effects of the Invention In the hose joint of the present invention, by forming the base, nipple, and sleeve as separate members, the shapes of each are simple and can be manufactured with a small number of man-hours. And in the state before the conclusion,
Each can be easily assembled. Next, they are fastened using a shape memory alloy ring member, and since the ring member has been enlarged in diameter in advance, it can be easily assembled to the outside of the sleeve. By heating, the ring member is deformed in one way to a predetermined inner diameter and reduced in diameter. Then, the sleeve and nipple contract in diameter under the force of the diameter contracting force of the ring member, and are clamped and fastened between the ring member and the base.

【0009】したがって本発明のホース継手によれば、
ニップル及びスリーブは機械的な塑性変形により周方向
に均一に締結されているので、ロウ付けに比べてシール
性の信頼性が高い。また加熱するだけで容易に締結でき
るので、工数の著しい低減を図ることができる。
Therefore, according to the hose joint of the present invention,
Since the nipple and the sleeve are uniformly fastened in the circumferential direction by mechanical plastic deformation, the sealing performance is more reliable than brazing. Furthermore, since it can be easily fastened simply by heating, the number of man-hours can be significantly reduced.

【0010】0010

【実施例】以下、実施例により具体的に説明する。 (実施例1)図1及び図2に本発明の一実施例のホース
継手を示す。このホース継手は、基部1と、ニップル2
と、スリーブ3及びリング部材4とから構成されている
。そして基部1が他部品と係合するとともに、ニップル
2の外周表面とスリーブ3の内周表面との間にホースが
挿入され、スリーブ3を径方向にカシメることによりホ
ースが結合される。
[Examples] Hereinafter, the present invention will be explained in detail using examples. (Embodiment 1) FIGS. 1 and 2 show a hose joint according to an embodiment of the present invention. This hose joint has a base 1 and a nipple 2.
, a sleeve 3 and a ring member 4. Then, while the base 1 engages with other parts, a hose is inserted between the outer circumferential surface of the nipple 2 and the inner circumferential surface of the sleeve 3, and the hoses are coupled by caulking the sleeve 3 in the radial direction.

【0011】基部1は、貫通孔11と貫通孔11の端面
に形成され相手部品と密接されるテーパ状のシート面1
2とをもつ厚肉の中央部10と、中央部10の一端側に
貫通孔11と同軸に形成され雌螺子部をもつ係合部13
と、中央部10の他端側に貫通孔11と同軸に形成され
た筒部14とからなり、硬鋼材から切削加工によって形
成されている。
The base 1 has a through hole 11 and a tapered sheet surface 1 formed on the end surface of the through hole 11 and brought into close contact with a mating component.
2, and an engaging portion 13 formed coaxially with the through hole 11 on one end side of the central portion 10 and having a female screw portion.
and a cylindrical portion 14 formed coaxially with the through hole 11 on the other end side of the central portion 10, and is formed by cutting from a hard steel material.

【0012】ニップル2は軟鋼材のパイプから形成され
、一端に筒部14が挿入され筒部14の外表面に接して
挿着されている。またスリーブ3も軟鋼材のパイプから
形成され、一端が縮径して筒部14の外側でニップル2
の外表面に接して挿着されている。そしてリング部材4
は銅系形状記憶合金(「メモカップル」古河電工(株)
製)からなり、筒部14との間でニップル2及びスリー
ブ3の一端部を挟持し、ニップル2及びスリーブ3は基
部1と一体的に締結されている。
The nipple 2 is formed from a mild steel pipe, and a cylindrical portion 14 is inserted into one end of the nipple 2 so as to be in contact with the outer surface of the cylindrical portion 14 . The sleeve 3 is also formed from a mild steel pipe, and one end is reduced in diameter and the nipple 2 is connected to the outside of the cylindrical portion 14.
It is inserted in contact with the outer surface of the and ring member 4
is a copper-based shape memory alloy (“Memocouple” manufactured by Furukawa Electric Co., Ltd.)
One end of the nipple 2 and sleeve 3 are sandwiched between the tube portion 14 and the nipple 2 and sleeve 3 are integrally fastened to the base portion 1.

【0013】本実施例のホース継手を製造するには、基
部1、ニップル2及びスリーブ3をそれぞれ形成する。 そして先ず筒部14にリング部材4を配置し、リング部
材4の内周表面と筒部14の外周表面との間の隙間にニ
ップル2の一端を挿入する。ニップル2の一端の内径は
筒部14の外径より僅かに大きくされているので、ニッ
プル2は容易に挿着できる。次にスリーブ3の一端を、
筒部14の位置でニップル2の外周表面とリング部材4
の内周表面との間の隙間に挿入する。スリーブ3の一端
の内径はニップル2の一端の外径より大きくされている
ので、スリーブ3は容易に挿着できる。
To manufacture the hose joint of this embodiment, the base 1, nipple 2 and sleeve 3 are formed respectively. First, the ring member 4 is placed in the cylindrical portion 14, and one end of the nipple 2 is inserted into the gap between the inner circumferential surface of the ring member 4 and the outer circumferential surface of the cylindrical portion 14. Since the inner diameter of one end of the nipple 2 is slightly larger than the outer diameter of the cylindrical portion 14, the nipple 2 can be easily inserted. Next, attach one end of the sleeve 3,
The outer peripheral surface of the nipple 2 and the ring member 4 at the position of the cylindrical portion 14
Insert into the gap between the inner peripheral surface of the Since the inner diameter of one end of the sleeve 3 is larger than the outer diameter of one end of the nipple 2, the sleeve 3 can be easily inserted.

【0014】そして150℃以上に加熱することにより
、リング部材4は約4%体積が収縮するように形状記憶
変形し、縮径する。この縮径の力がスリーブ3及びニッ
プル2に伝わり、この両者も縮径して筒部14に圧接さ
れる。そしてニップル2及びスリーブ3のそれぞれの一
端は、リング部材4と筒部14との間で挟持され締結さ
れる。
[0014] By heating the ring member 4 to 150° C. or higher, the ring member 4 undergoes shape memory deformation so that its volume shrinks by about 4%, and its diameter is reduced. This diameter-reducing force is transmitted to the sleeve 3 and nipple 2, which also contract in diameter and come into pressure contact with the cylindrical portion 14. One end of each of the nipple 2 and the sleeve 3 is clamped and fastened between the ring member 4 and the cylindrical portion 14.

【0015】すなわち本実施例のホース継手によれば、
基部1、ニップル2及びスリーブ3は、それぞれ形状が
単純であるので製造は容易である。またそれぞれの組付
け箇所の寸法は余裕をもって形成されているので、組付
けも容易である。さらに締結時には加熱するだけでよい
。したがって極めて容易に製造することができ、製造工
数を低減することができる。
That is, according to the hose joint of this embodiment,
The base 1, the nipple 2, and the sleeve 3 have simple shapes and are easy to manufacture. Furthermore, since the dimensions of each assembly location are formed with a margin, assembly is easy. Furthermore, it is only necessary to heat it when tightening. Therefore, it can be manufactured extremely easily and the number of manufacturing steps can be reduced.

【0016】また、ニップル2の一端はスリーブ3を介
して全周が均一に縮径され、均一に塑性変形して筒部1
4表面に圧接されている。したがってロウ付けによる接
合に比べてシール性の信頼性が向上する。 (実施例2)本実施例のホース継手を図3及び図4に示
す。このホース継手は、筒部14、ニップル2及びスリ
−ブ3の締結部分の形状が異なること以外は実施例1と
同様である。
[0016] Also, one end of the nipple 2 is uniformly reduced in diameter around the entire circumference through the sleeve 3, and uniformly deformed plastically to form the cylindrical portion 1.
4. Pressed against the surface. Therefore, the reliability of sealing performance is improved compared to joining by brazing. (Example 2) A hose joint of this example is shown in FIGS. 3 and 4. This hose joint is the same as that in Example 1 except that the shapes of the connecting portions of the cylindrical portion 14, nipple 2, and sleeve 3 are different.

【0017】すなわち筒部14には、中央部10に近い
外周表面に周方向に一周するリング状の溝部15が形成
されている。またニップル2及びスリーブ3の一端側端
部には、内周側へ曲折されて形成されたリング状の曲折
部20、30が存在している。そしてニップル2及びス
リーブ3の端部は実施例1と同様に筒部14と締結され
ているとともに、ニップル2の曲折部20は溝部15と
係合し、スリーブ3の曲折部30はニップル2の曲折部
20の端面と係合している。これによりニップル2及び
スリーブ3の基部1に対する軸方向の相対移動が防止さ
れている。
That is, the cylindrical portion 14 has a ring-shaped groove portion 15 formed on the outer circumferential surface near the center portion 10 so as to go around the circumferential direction. Further, at one end of the nipple 2 and the sleeve 3, ring-shaped bent portions 20 and 30 are formed by being bent toward the inner circumferential side. The ends of the nipple 2 and the sleeve 3 are fastened to the cylindrical part 14 as in the first embodiment, and the bent part 20 of the nipple 2 engages with the groove part 15, and the bent part 30 of the sleeve 3 is connected to the tube part 14. It engages with the end surface of the bent portion 20. This prevents the nipple 2 and sleeve 3 from moving relative to the base 1 in the axial direction.

【図面の簡単な説明】[Brief explanation of drawings]

【図1】本発明の一実施例のホース継手の構成を示す斜
視図である。
FIG. 1 is a perspective view showing the configuration of a hose joint according to an embodiment of the present invention.

【図2】本発明の一実施例のホース継手の半部断面で示
す正面図である。
FIG. 2 is a front view showing a half section of a hose joint according to an embodiment of the present invention.

【図3】本発明の第2の実施例のホース継手の半部断面
で示す正面図である。
FIG. 3 is a front view showing a half section of a hose joint according to a second embodiment of the present invention.

【図4】図3の要部拡大断面図である。FIG. 4 is an enlarged sectional view of the main part of FIG. 3;

【図5】従来のホース継手の半部断面で示す正面図であ
る。
FIG. 5 is a front view showing a half section of a conventional hose joint.

【図6】従来の他のホース継手の断面図である。FIG. 6 is a sectional view of another conventional hose joint.

【符号の説明】[Explanation of symbols]

1:基部        2:ニップル      3
:スリーブ      4:リング部材 10:中央部    11:貫通孔      12:
シート面    13:係合部 14:筒部      15:溝部        2
0、30:曲折部
1: Base 2: Nipple 3
: Sleeve 4: Ring member 10: Center part 11: Through hole 12:
Seat surface 13: Engaging portion 14: Cylinder portion 15: Groove portion 2
0, 30: Bent part

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  軸方向に貫通する貫通孔と、一端側に
形成され他部品と係合固定される係合部と、該貫通孔と
同軸的に形成され他端側へ突出する筒部と、をもつ厚肉
の基部と、筒状をなし一端が該筒部を覆って挿着された
ニップルと、該ニップルより大径の筒状をなし一端が縮
径されて該筒部上で該ニップルを覆って挿着されたスリ
ーブと、該筒部上で縮径する方向へ形状記憶変形し該筒
部の外周表面との間で該ニップル及び該スリーブを一体
的に挟持する形状記憶合金製リング部材と、からなるこ
とを特徴とするホース継手。
Claim: 1. A through hole penetrating in the axial direction, an engaging portion formed on one end side to be engaged and fixed with another component, and a cylindrical portion formed coaxially with the through hole and protruding toward the other end side. , a thick-walled base having a cylindrical shape with one end inserted over the cylindrical portion, and a cylindrical shape with a larger diameter than the nipple with one end reduced in diameter so as to fit over the cylindrical portion. A sleeve inserted over the nipple and a shape-memory alloy that deforms shape-memory in the direction of diameter reduction on the cylindrical portion and integrally holds the nipple and the sleeve between the outer circumferential surface of the cylindrical portion. A hose joint characterized by comprising a ring member.
JP3060479A 1991-03-25 1991-03-25 Hose joint Pending JPH04296285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3060479A JPH04296285A (en) 1991-03-25 1991-03-25 Hose joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3060479A JPH04296285A (en) 1991-03-25 1991-03-25 Hose joint

Publications (1)

Publication Number Publication Date
JPH04296285A true JPH04296285A (en) 1992-10-20

Family

ID=13143456

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3060479A Pending JPH04296285A (en) 1991-03-25 1991-03-25 Hose joint

Country Status (1)

Country Link
JP (1) JPH04296285A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08135877A (en) * 1994-11-02 1996-05-31 Toa Koukiyuu Keishiyu Valve Seizo Kk Prevention for slip-off of joint metal fitting of electro-fusion coupling and device therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08135877A (en) * 1994-11-02 1996-05-31 Toa Koukiyuu Keishiyu Valve Seizo Kk Prevention for slip-off of joint metal fitting of electro-fusion coupling and device therefor

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