JPH0155838B2 - - Google Patents
Info
- Publication number
- JPH0155838B2 JPH0155838B2 JP59014347A JP1434784A JPH0155838B2 JP H0155838 B2 JPH0155838 B2 JP H0155838B2 JP 59014347 A JP59014347 A JP 59014347A JP 1434784 A JP1434784 A JP 1434784A JP H0155838 B2 JPH0155838 B2 JP H0155838B2
- Authority
- JP
- Japan
- Prior art keywords
- hose
- pressure
- fitting
- blade
- reverse
- 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
Links
- 239000002184 metal Substances 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000037237 body shape Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
- F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
- F16L33/2073—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
- F16L33/2076—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member by plastic deformation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Description
【発明の詳細な説明】
本発明は、高圧用のホースのカツプリングに関
し、特に、継手金具の内筒部の外周に截頭円錐状
の段部を順方向及び逆方向に設けて、高圧流体が
ホースからにじみ出ないようにし、破損事故を防
止する高圧用のホースと継手金具との接続構造に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coupling for a high-pressure hose, and in particular, a truncated conical stepped portion is provided in the forward and reverse directions on the outer periphery of the inner cylindrical portion of the coupling fitting to prevent high-pressure fluid from flowing. This invention relates to a connection structure between a high-pressure hose and a fitting that prevents leakage from the hose and prevents breakage.
例えばブルドーザ等の建設機械にあつては、近
時それに用いられる油圧機器の作動圧力が増々高
圧化している。すなわち、従来は140〜250Kg／cm2
程度の作動圧力であつたものが、280〜420Kg／cm2
程度へと昇圧されているのである。この理由は、
コンパクトな油圧機器によつて多大な作業能力を
得んがためである。従つて、機器の配管系に使用
されるホースと継手との接続構造にも、高圧時に
おける抜け止め対策は勿論のこと、一層優れた耐
圧性、耐密性（いわゆる流体漏洩防止能力であ
る。）が要求されている。特に、油圧機器の常用
圧力が前記した280〜420Kg／cm2程度であつても、
機器の試験基格等における衝撃圧力は630Kg／cm2
程度にも上昇し、しかもこの衝撃圧力が数十万回
のオーダーで繰り返される。 For example, in construction machines such as bulldozers, the operating pressure of hydraulic equipment used therein has recently become increasingly high. In other words, conventionally 140-250Kg/ cm2
280-420Kg/cm 2
It has been boosted to a certain degree. The reason for this is
The purpose is to obtain a large amount of work capacity with compact hydraulic equipment. Therefore, the connection structure between the hose and the joint used in the piping system of the equipment not only has measures to prevent it from coming off at high pressures, but also has better pressure resistance and tightness (so-called fluid leakage prevention ability). ) is required. In particular, even if the normal pressure of hydraulic equipment is about 280 to 420 kg/cm 2 as mentioned above,
The impact pressure according to equipment test standards is 630Kg/cm 2
Moreover, this impact pressure is repeated on the order of hundreds of thousands of times.
従来の接続構造を第１図に基づいて説明する
と、継手金具の一端は、図示しない油圧機器に連
結されるもので、フランジ若しくはねじ等の連結
部を有し、他端が内筒部１として形成され、その
外周にホース２が挿着される。内筒部１の外周に
は、截頭円錐状の段部３（いわゆるタケノコであ
る。）が、その大径部分がホースの進行方向の後
方になるように（順刃である。）多数段形成され
ており、これらのタケノコの段部３にホース２が
挿着される。高圧用のホース２は、シール用のゴ
ム材料から成る内層４と、ブレード若しくはスパ
イラル状のワイヤから成る金属補強層５と、その
外周に設けられたゴム被覆である外層６とから成
り、内層４に内筒部１の段部３が喰い込み、この
喰い込み状態が継手の外筒部７によつて強化、保
持される。すなわち、内筒部１とは別途（しか
し、少なくとも一端は結合されている。）若しく
は一体の外筒部７が図示しないかしめ工具によつ
て継手金具の軸心方向に回転体状に加圧変形され
て、その内周部分の歯形（必ずしも不可欠という
訳ではない。）がホース２を押圧する。そして、
これにより、内層４に段部３が喰い込み、ホース
２が継手金具によつて保持されるのである。 A conventional connection structure will be explained based on FIG. 1. One end of the fitting is connected to a hydraulic device (not shown) and has a connecting part such as a flange or screw, and the other end is connected to an inner cylinder part 1. The hose 2 is inserted into the outer periphery. On the outer periphery of the inner cylindrical portion 1, a truncated cone-shaped stepped portion 3 (so-called bamboo saw) is provided with multiple steps such that the large diameter portion is at the rear in the direction of movement of the hose (sequential blades). The hose 2 is inserted into the stepped portion 3 of these bamboo shoots. The high-pressure hose 2 consists of an inner layer 4 made of a rubber material for sealing, a metal reinforcing layer 5 made of a braid or spiral wire, and an outer layer 6 that is a rubber coating provided on the outer periphery of the inner layer 4. The stepped portion 3 of the inner cylindrical portion 1 bites in, and this biting state is reinforced and maintained by the outer cylindrical portion 7 of the joint. That is, the outer cylinder part 7, which is separate from the inner cylinder part 1 (but is connected to at least one end) or is integral with the inner cylinder part 1, is pressurized and deformed into a rotating body shape in the axial direction of the fitting by a caulking tool (not shown). The tooth profile on the inner circumferential portion (not necessarily essential) presses the hose 2. and,
As a result, the stepped portion 3 bites into the inner layer 4, and the hose 2 is held by the fitting.
この接続構造は、ホース２の保持性能という面
では一応満足できるものの、高圧の作動油がホー
ス２内に供給されると、第２図に示すように、順
刃であるタケノコとホース２の内層４との僅かの
隙間に高圧の作動油が矢印のように侵入して、ワ
イヤ製の金属補強層５を侵して損傷させ、かつ、
シール性能に乏しい外層６からにじみ出る。この
ような損傷漏出が前記した衝撃圧力によつて増幅
されて進行すると、作動油は高圧で供給されてい
るので、継手金具とホース２との接続構造が一瞬
にして破壊され、高圧の作動油が飛散して事故を
生じてしまう。 Although this connection structure is somewhat satisfactory in terms of holding performance of the hose 2, when high-pressure hydraulic oil is supplied into the hose 2, as shown in FIG. High-pressure hydraulic oil enters into the small gap between the wire and the metal reinforcing layer 5 as shown by the arrow, damaging the wire metal reinforcing layer 5, and
It oozes out from the outer layer 6, which has poor sealing performance. If this kind of damage and leakage is amplified by the above-mentioned impact pressure and progresses, the connection structure between the fitting and the hose 2 will be instantly destroyed because the hydraulic oil is being supplied at high pressure, and the high-pressure hydraulic oil will be destroyed. may scatter and cause an accident.
作動油の漏洩を防止するために、外筒部７をよ
り一層強力に加圧変形させてホース２の締め率を
上げることが考えられる。（一例として、通常は
50数％程度のものを60数％に上げる。）しかしな
がら、単に外筒部７の締めをきつくしただけで
は、依然として作動油の微量の漏出は防止でき
ず、また、締めをきつくする程、ホース２の内層
４のゴムが流れてしまう。ここにゴムの流れと
は、応力を受けたゴムが応力と直角方向にはみ出
す現象を言う。 In order to prevent leakage of hydraulic oil, it is conceivable to pressurize and deform the outer cylinder part 7 more strongly to increase the tightening rate of the hose 2. (As an example, usually
Increase the rate from around 50% to 60%. ) However, simply tightening the outer cylindrical portion 7 still cannot prevent a small amount of hydraulic oil from leaking out, and the tighter the tightening, the more the rubber in the inner layer 4 of the hose 2 flows. Here, the term "rubber flow" refers to a phenomenon in which rubber subjected to stress protrudes in a direction perpendicular to the stress.
ゴムの流れを防止することを主目的とした実開
昭52−116713号にあつては、第３図に示すよう
に、ホース２の端部が挿入されるニツプル８（前
記内筒部１に相当する。）の外周に、外方に傾斜
した側壁９を持つた複数の環状溝１０を形成する
ことが提案されている。 In the case of Utility Model Application No. 52-116713, whose main purpose is to prevent the flow of rubber, as shown in FIG. It has been proposed to form a plurality of annular grooves 10 with outwardly sloping side walls 9 on the outer periphery of the same.
しかしながら、このようないわゆる台形状刃を
内筒部に形成しても、高圧の作動油が台形状刃と
ホースの内層との間から侵入してホースの金属補
強層を損傷させ、前記と同様の結果を招いてしま
う。しかも、たとえ作動油の漏洩が微量であつて
も、高圧下ではホース２の損傷が加速的に進行す
る。 However, even if such a so-called trapezoidal blade is formed in the inner cylinder, high-pressure hydraulic oil may enter between the trapezoidal blade and the inner layer of the hose and damage the metal reinforcing layer of the hose, resulting in the same problem as described above. This results in the following results. Moreover, even if the leakage of hydraulic oil is minute, damage to the hose 2 progresses at an accelerated pace under high pressure.
これに対処するため、ホースと内筒部（ニツプ
ル）との連続長を増加させることが考えられる
が、接続長を増大させると、油圧機器の小型化
（コンパクト化）という要請に逆行してしまう。 To deal with this, it is possible to increase the continuous length between the hose and the inner cylinder (nipple), but increasing the connection length would go against the desire to make hydraulic equipment more compact. .
本発明は、上記した問題に鑑みてなされ、進歩
した接続構造を提供するもので、その目的は、高
圧化において継手金具の締め圧力及び所要寸法は
従来のままで、作動油の微量の漏洩を防止し、も
つて接続部分の損壊による事故を皆無にすること
にある。 The present invention was made in view of the above-mentioned problems, and provides an advanced connection structure.The purpose of the present invention is to prevent the leakage of small amounts of hydraulic fluid even when the tightening pressure and required dimensions of the joint fittings remain the same as in the case of high pressure. The purpose is to prevent accidents caused by damage to connecting parts.
そして、このために本発明は継手金具の内筒部
の外周に、ホースの挿着側の端部からタケノコを
順方向及び逆方向に設けたものである。 For this purpose, in the present invention, bamboo shoots are provided on the outer periphery of the inner cylindrical portion of the joint fitting in the forward and reverse directions from the end on the insertion side of the hose.
以下、図面を参照して、本発明の実施例につき
詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第４図は、本発明に係る接続構造の一実施例を
示す一部断面説明図、第５図は、第４図の要部拡
大説明図、第６図は、ホースを接続した状態の断
面説明図である。 FIG. 4 is a partially cross-sectional explanatory diagram showing one embodiment of the connection structure according to the present invention, FIG. 5 is an enlarged explanatory diagram of the main part of FIG. 4, and FIG. 6 is a cross-sectional view of the hose connected. It is an explanatory diagram.
大略円筒状の金属製の継手金具は、その一端が
図示しない油圧機器との連結部１１とされ、フラ
ンジ又はねじとして形成されている。また、ホー
ス２が挿着される側は内筒部１２とされ、その外
周には、ホース２挿着側の端部から順次に、順刃
部１３、環状溝１４及び逆刃部１５が形成されて
いる。すなわち順刃部１３は、截頭円錐状の段部
（タケノコ）を、その大径部分１６が矢印で示す
ホース２の挿着方向に関して後方になるように設
けられている。また、反対に逆刃部１７にあつて
は、截頭円錐状の段部の大径部分１７がホース２
の挿着方向に関して前方になるように設けられて
いる。ここで順刃部１３及び逆刃部１５の大径部
分１６，１７には、第５図に示すように必ずしも
尖端状ではなくＲがとられており、相異なる処
は、大径部分１６，１７の位置だけである。 One end of the approximately cylindrical metal joint fitting serves as a connecting portion 11 to a hydraulic device (not shown), and is formed as a flange or a screw. Further, the side where the hose 2 is inserted is an inner cylindrical part 12, and a forward blade part 13, an annular groove 14, and a reverse blade part 15 are formed on the outer periphery of the inner cylinder part 12 in order from the end on the hose 2 insertion side. has been done. That is, the sequential blade part 13 is provided with a truncated cone-shaped stepped part (bamboo saw) such that the large diameter part 16 is at the rear with respect to the insertion direction of the hose 2 shown by the arrow. On the contrary, in the case of the reverse blade part 17, the large diameter part 17 of the truncated conical step part is connected to the hose 2.
It is provided so as to be at the front with respect to the insertion direction. As shown in FIG. 5, the large diameter portions 16 and 17 of the forward blade portion 13 and the reverse blade portion 15 are not necessarily pointed, but are rounded. There are only 17 positions.
順刃部１３及び逆刃部１５のほぼ中間には環状
溝１４が形成されている。この環状溝１４は、い
わば順刃部１３と逆刃部１４との仕切りであり、
また、ホース２が外筒部１８によつて押圧されて
ホース２のゴムの内層４が流れるとき、この環状
溝１４に最も多く集まるものであり、ホース２の
抜け止め、保持性能に好ましい影響をもたらす。
すなわち、順刃部１３及び逆刃部１５のそれぞれ
の刃数、言い換えると各部の長さには特に制限は
ないが、環状溝１４をほぼ中央にして、順刃部１
３及び逆刃部１５をほぼ同一長さにすることがで
きる。 An annular groove 14 is formed approximately in the middle of the forward blade portion 13 and the reverse blade portion 15. This annular groove 14 is, so to speak, a partition between the forward blade part 13 and the reverse blade part 14,
In addition, when the hose 2 is pressed by the outer cylindrical portion 18 and the inner layer 4 of the rubber of the hose 2 flows, the largest amount of rubber gathers in this annular groove 14, which has a favorable effect on the ability to prevent the hose 2 from coming off and retain it. bring.
That is, although there is no particular restriction on the number of blades of each of the forward blade portion 13 and the reverse blade portion 15, in other words, the length of each portion, the forward blade portion 1 is placed with the annular groove 14 approximately in the center.
3 and the reverse blade portion 15 can be made to have approximately the same length.
高圧用のホース２は、前記したように、シール
用のゴム材から成る内層４、金属補強層５及び外
層６から成る。そして、内筒部１２とは別体若し
くは一体の外筒部１８が加圧変形されると、その
押圧力によつて内層４が内筒部１２の順刃部１
３、環状溝１４及び逆刃部１５に喰い込む。な
お、図示の実施例にあつては外筒部１８の内周に
歯形として突部１９が形成されているが、これら
の突部１９は本発明の必須要件ではない。また、
外筒部１８は、内筒部１２とは別体の部材を該内
筒部１２の一端に嵌合させるものでも、内筒部１
２と一体に形成されたものでもよい。 As described above, the high-pressure hose 2 includes an inner layer 4 made of a rubber material for sealing, a metal reinforcing layer 5, and an outer layer 6. When the outer cylinder part 18, which is separate from or integrated with the inner cylinder part 12, is deformed by pressure, the inner layer 4 is deformed by the pressing force into the forward cutting part 1 of the inner cylinder part 12.
3. Bit into the annular groove 14 and the reverse blade part 15. In the illustrated embodiment, protrusions 19 are formed in the form of teeth on the inner periphery of the outer cylindrical portion 18, but these protrusions 19 are not an essential requirement of the present invention. Also,
The outer cylinder part 18 may be one in which a member separate from the inner cylinder part 12 is fitted into one end of the inner cylinder part 12, or a member separate from the inner cylinder part 12.
It may be formed integrally with 2.
次に、上記実施例の作用を第７図の要部拡大説
明図とともに説明すると、まずホース２を内筒部
１２に挿着する際には、内筒部１２の挿着端さえ
タケノコが順刃であれば手際良く挿着ができ、順
刃部１３に続いて逆刃部１５が存在し、これによ
り多少の抵抗が増大しようとも、挿着作業が遂行
できる。そして、図示しないかしめ工具によつて
外筒部１８を加圧変形させてホース２を内筒部１
２に押し付けると、ゴム製の内層４は、ほぼ中央
の環状溝１４を最大の集まりとして前後方向に移
動しようとする。従つて、有害なゴムの流れを生
じることなくホース２を内筒部１２に強固に締め
付けることができ、保持性能、耐圧性能が良好と
なる。 Next, the operation of the above embodiment will be explained with reference to the enlarged explanatory view of the main part in FIG. If the blade is used, the insertion can be done easily, and since the reverse blade part 15 is present following the forward blade part 13, the insertion work can be performed even if the resistance increases to some extent. Then, the outer cylindrical portion 18 is pressurized and deformed using a caulking tool (not shown) to attach the hose 2 to the inner cylindrical portion 1.
2, the inner layer 4 made of rubber tends to move in the front-rear direction with the annular groove 14 located approximately in the center being the largest group. Therefore, the hose 2 can be firmly tightened to the inner cylinder part 12 without causing harmful rubber flow, and the holding performance and pressure resistance performance are improved.
また、かしめ工具によつて外筒部１８を加圧変
形させてホース２を内筒部に押し付けると、ゴム
製の内層は、環状溝１４から順刃部１３及び逆刃
部１５のそれぞれに移動しようとし、順刃部１３
及び逆刃部１５のそれぞれの傾斜した底壁上から
それぞれの直立壁に向けて押し付けられるような
動きをし、強く密着することになる。このため、
高圧の作動油は、第７図に曲線的な矢印で示すよ
うに、確かに順刃部１３から環状溝１４の近傍ま
では侵入するものの、逆刃部１５の直立壁及びそ
れに密着する内層４が障害となつてそれ以上の侵
入が阻止される。従つて、高圧の作動油の圧力が
繰り返し衝撃圧力となつて上昇しても、逆刃部１
５によつて侵入が阻止され、金属補強層５や外層
６に廻り込むことはない。それ故、金属補強層５
が損傷したり、作動油が漏出することはない。 Further, when the outer cylinder part 18 is pressurized and deformed using a crimping tool and the hose 2 is pressed against the inner cylinder part, the rubber inner layer moves from the annular groove 14 to the forward blade part 13 and the reverse blade part 15, respectively. When trying to do so, the sequential blade part 13
The reverse blade portion 15 moves from the inclined bottom wall to the respective upright wall, and comes into strong contact with the upright wall. For this reason,
As shown by the curved arrow in FIG. 7, the high-pressure hydraulic oil does infiltrate from the forward blade part 13 to the vicinity of the annular groove 14, but the upright wall of the reverse blade part 15 and the inner layer 4 that is in close contact with it becomes an obstacle and prevents further intrusion. Therefore, even if the pressure of high-pressure hydraulic oil repeatedly increases as impact pressure, the reverse blade part 1
5 prevents the intrusion from entering the metal reinforcing layer 5 and the outer layer 6. Therefore, the metal reinforcement layer 5
will not be damaged or leakage of hydraulic fluid.
この時、ホースの締め率は旧来の通りで済み、
また、前述の通り抜け止め機能も良好である。ち
なみに発明者の実験によれば、旧来通りの締め率
で衝撃圧力を20万回加えても、何ら漏洩等の不都
合は生じなかつた。 At this time, the hose tightening rate remains the same as before.
Moreover, the above-mentioned pass-through prevention function is also good. Incidentally, according to the inventor's experiments, even if impact pressure was applied 200,000 times at the conventional tightening rate, no problems such as leakage occurred.
以上述べたように、本発明は、基本的に、継手
金具の内筒部のホース挿着側の端部から、截頭円
錐状の段部を、その大径部分がホースの挿着方向
に関して後方になるように設けた複数個の順刃部
と、截頭円錐状の段部を、その大径部分がホース
の挿着方向に関して前方になるように設けた複数
個の逆刃部とを形成するとともに、順刃部と逆刃
部との間に環状溝を設けたものである。そして、
高圧の作動油の漏洩を逆刃部によつてストツプし
てホースの金属補強層の損傷を防止する。 As described above, the present invention basically provides a truncated conical stepped portion from the hose insertion side end of the inner cylindrical portion of the fitting so that the large diameter portion thereof is connected to the hose insertion direction. A plurality of forward blade portions are provided so as to be located at the rear, and a plurality of reverse blade portions are provided such that a truncated conical stepped portion is provided such that the large diameter portion thereof is located at the front with respect to the hose insertion direction. In addition, an annular groove is provided between the forward blade portion and the reverse blade portion. and,
The leakage of high-pressure hydraulic oil is stopped by the reverse blade part to prevent damage to the metal reinforcing layer of the hose.
この結果、本発明構造によれば、高圧下におい
て、接続構造の耐密性が飛躍的に向上し、また、
金具の締め圧力は従来のままでよく、しかも、接
続構造をコンパクトに保つことができ、高圧用の
カツプリングとして極めて有用である。 As a result, according to the structure of the present invention, the tightness of the connection structure is dramatically improved under high pressure, and
The tightening pressure of the metal fittings can remain the same as before, and the connection structure can be kept compact, making it extremely useful as a high-pressure coupling.
第１図は、従来技術を示す一部断面説明図、第
２図は第１図の要部拡大説明図、第３図は、他の
従来技術を示す一部断面説明図、第４図は、本発
明に係る接続構造の一実施例を示す一部断面説明
図、第５図は、第４図の要部拡大説明図、第６図
は、ホースを接続した状態の断面説明図、第７図
は、第６図の要部拡大説明図である。
２……ホース、４……内層、５……金属補強
層、６……外層、１２……内筒部、１３……順刃
部、１４……環状溝、１５……逆刃部、１６，１
７……大径部分、１８……外筒部。
FIG. 1 is a partial cross-sectional explanatory diagram showing a conventional technique, FIG. 2 is an enlarged explanatory diagram of the main part of FIG. 1, FIG. 3 is a partial cross-sectional explanatory diagram showing another conventional technique, and FIG. , FIG. 5 is an enlarged explanatory view of the main part of FIG. 4, FIG. 6 is a cross-sectional explanatory view of a state in which a hose is connected, and FIG. FIG. 7 is an enlarged explanatory view of the main part of FIG. 6. 2...Hose, 4...Inner layer, 5...Metal reinforcing layer, 6...Outer layer, 12...Inner cylinder part, 13...Sequential blade part, 14...Annular groove, 15...Reverse blade part, 16 ,1
7...Large diameter part, 18...Outer cylinder part.
Claims (1)
るホースを挿着するとともに、該ホースの外周を
継手金具の外筒部によつてカバーし、該外筒部を
回転体状に加圧変形させてホースを押圧し、該ホ
ースを継手金具に一体的に結合する構造におい
て、前記内筒部のホース挿着側の端部から順に、
截頭円錘状の段部をその大径部分がホースの挿着
方向に関して後方になるように設けた複数個の順
刃部と、截頭円錐状の段部をその大径部分がホー
スの挿着方向に関して前方になるように設けた複
数個の逆刃部とを形成するとともに、順刃部と逆
刃部との間に環状溝を設けたことを特徴とする高
圧用のホースと継手金具との接続構造。1. Insert a hose having a metal reinforcing layer on the outer periphery of the inner cylindrical part of the fitting, cover the outer periphery of the hose with the outer cylindrical part of the fitting, and pressurize the outer cylindrical part in the shape of a rotating body. In the structure in which the hose is deformed and pressed and the hose is integrally connected to the fitting, in order from the end of the inner cylinder on the hose insertion side:
A plurality of sequential blade parts each having a truncated conical stepped part with its large diameter part facing backward with respect to the hose insertion direction; A high-pressure hose and a coupling, characterized by forming a plurality of reverse blade parts provided forward in the insertion direction, and providing an annular groove between the forward blade part and the reverse blade part. Connection structure with metal fittings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59014347A JPS60159492A (en) | 1984-01-31 | 1984-01-31 | Connecting structure of hose for high pressure and joint fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59014347A JPS60159492A (en) | 1984-01-31 | 1984-01-31 | Connecting structure of hose for high pressure and joint fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60159492A JPS60159492A (en) | 1985-08-20 |
| JPH0155838B2 true JPH0155838B2 (en) | 1989-11-27 |
Family
ID=11858534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59014347A Granted JPS60159492A (en) | 1984-01-31 | 1984-01-31 | Connecting structure of hose for high pressure and joint fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60159492A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61175393A (en) * | 1985-01-31 | 1986-08-07 | 東海ゴム工業株式会社 | Joint for hose |
| JPH0511433Y2 (en) * | 1988-07-08 | 1993-03-22 | ||
| JP3766808B2 (en) * | 2002-03-22 | 2006-04-19 | 横浜ゴム株式会社 | Hose fittings and hose fittings and hose mounting structure |
| US9470351B2 (en) | 2013-03-11 | 2016-10-18 | Hanon Systems | Crimp fitting having reversed barbs |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57114085A (en) * | 1980-11-24 | 1982-07-15 | Aeroquip Ag | Hose attaching equipment |
-
1984
- 1984-01-31 JP JP59014347A patent/JPS60159492A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57114085A (en) * | 1980-11-24 | 1982-07-15 | Aeroquip Ag | Hose attaching equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60159492A (en) | 1985-08-20 |
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