JP2012117618A - Fluid coupling - Google Patents

Fluid coupling Download PDF

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JP2012117618A
JP2012117618A JP2010268452A JP2010268452A JP2012117618A JP 2012117618 A JP2012117618 A JP 2012117618A JP 2010268452 A JP2010268452 A JP 2010268452A JP 2010268452 A JP2010268452 A JP 2010268452A JP 2012117618 A JP2012117618 A JP 2012117618A
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opening end
valve
socket
plug
inclined surface
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Atsushi Morio
敦 森生
Katsuya Ishibe
勝也 石部
Yoshiaki Abura
善紀 油
Yoshifumi Ogami
芳文 大上
Thien Xuan Dinh
ディン・スァン・チェン
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Nagahori Industry Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To stabilize pressure loss by keeping a flow path cross-sectional area constant while enhancing development efficiency of a fluid coupling by employing a common shape in a plug, socket and valve in product development of fluid couplings of different types.SOLUTION: In a standardized fluid coupling which includes a valve 32, a valve holder 42 and spring 41 inside a plug 12 and socket 13 having insertion holes 14 and containing a first opening end 16 and a second opening end 17 facing the first opening end 16, respectively, the diameter of an abutting surface 33, the diameter of first opening end 16, the diameter of first opening end side inclined surface 34, the diameters of inner peripheral surfaces of the plug 12 and socket 13, the diameter of maximum diameter part 37, and the diameters of inner peripheral surfaces of the plug 12 and socket 13 are made common. Axial dimensions of the second opening end side inclined surface 38 and axial dimensions of an linear-shaped inner peripheral surfaces of the plug 12 and socket 13 facing the second opening end side inclined surface 38 are changed.

Description

本発明はソケットとプラグからなる流体継手に関する。   The present invention relates to a fluid coupling comprising a socket and a plug.

本願出願人は、図４および図５に示すように、バルブホルダとスプリングの形状が異なる２種類の流体継手を提案している。
図４は、特願２０１０−１０３８６６の流体継手１１である。図４の上半分は流体継手１１のプラグ１２とソケット１３を接合する途中の状態、下半分はプラグ１２とソケット１３の接合完了状態の断面図を示す。この流体継手１１において、プラグ１２およびソケット１３は、内面に挿通孔１４が形成された筒状の形状を有する。また、プラグ１２およびソケット１３は、対向するように形成された第１開口端１６を介して互いに液密に接合される。第１開口端１６の反対側の端部には、流路の入口または出口を規定する第２開口端１７がそれぞれ、形成されている。 As shown in FIGS. 4 and 5, the applicant of the present application has proposed two types of fluid couplings in which the shapes of the valve holder and the spring are different.
FIG. 4 shows the fluid coupling 11 of Japanese Patent Application No. 2010-103866. 4 shows a state in the middle of joining the plug 12 and the socket 13 of the fluid coupling 11, and the lower half shows a cross-sectional view of the joined state of the plug 12 and the socket 13. FIG. In the fluid coupling 11, the plug 12 and the socket 13 have a cylindrical shape in which an insertion hole 14 is formed on the inner surface. Further, the plug 12 and the socket 13 are joined to each other in a liquid-tight manner through a first opening end 16 formed to face each other. A second opening end 17 that defines an inlet or an outlet of the flow path is formed at the end opposite to the first opening end 16.

プラグ１２の第２開口端１７の内面には雌ねじ１８が形成され、ここに一方の配管がねじ結合により接続される。プラグ１２の外周の中央には鋼球係止外周溝１９が形成されている。   An internal thread 18 is formed on the inner surface of the second open end 17 of the plug 12, and one pipe is connected thereto by screw coupling. A steel ball locking outer peripheral groove 19 is formed at the center of the outer periphery of the plug 12.

ソケット１３は図４において右側の本体部２１と、左側のプラグ挿入部２２とで構成されている。本体部２１にはプラグ１２と対称的に、第２開口端１７の内面に雌ねじ２３が設けられ、ここに他方の配管がねじ結合により接続される。   The socket 13 is composed of a main body portion 21 on the right side and a plug insertion portion 22 on the left side in FIG. In contrast to the plug 12, the main body 21 is provided with a female screw 23 on the inner surface of the second opening end 17, to which the other pipe is connected by screw coupling.

ソケット１３のプラグ１２側端部近傍には、外面にストッパー２４が配設されるとともに、複数の孔２６に鋼球２７が収容されている。この鋼球２７が鋼球係止溝１９に嵌り込むことで、ソケット１３にプラグ１２を接合する。プラグ挿入部２２の外周面にはスリーブ３０が嵌挿され、スプリング３１により開放端（図４において左端）に向かって付勢されている。ソケット１３にプラグ１２を接合すると、このスリーブ３０の内周面が鋼球２７を鋼球係止溝１９に付勢する。   In the vicinity of the end of the socket 13 on the plug 12 side, a stopper 24 is disposed on the outer surface, and steel balls 27 are accommodated in a plurality of holes 26. The plug 12 is joined to the socket 13 by the steel ball 27 fitting into the steel ball locking groove 19. A sleeve 30 is fitted on the outer peripheral surface of the plug insertion portion 22 and is urged toward the open end (left end in FIG. 4) by a spring 31. When the plug 12 is joined to the socket 13, the inner peripheral surface of the sleeve 30 biases the steel ball 27 toward the steel ball locking groove 19.

以下、プラグ１２内部のバルブ３２、バルブホルダ４２、スプリング４１について説明するが、ソケット１３内部のものもプラグ１２側と同一形状で、対称に配置されるので、同一符号を付して説明を省略する。また、流体は図４中の矢印方向にプラグ１２及びソケット１３の内部を流れると仮定するが、逆の方向に流れてもよい。   Hereinafter, the valve 32, the valve holder 42, and the spring 41 inside the plug 12 will be described. However, the one inside the socket 13 is also arranged in the same shape and symmetrically with the plug 12 side, so that the same reference numerals are given and the description is omitted. To do. Further, although it is assumed that the fluid flows through the plug 12 and the socket 13 in the direction of the arrow in FIG. 4, it may flow in the opposite direction.

プラグ１２の内部に収容されたバルブ３２は、ソケット１３のバルブ３２に当接する小径の当接面３３と、当接面３３から第２開口端１７に向かって拡径する円錐状の第１開口端側傾斜面３４と、第１開口端側傾斜面３４の端部にシール部材３５を介して形成され、プラグ１２の弁座３６に当接する最大径部３７と、最大径部３７から第２開口端１７に向かって縮径する円錐状の第２開口端側傾斜面３８とを備えている。また、バルブ３２の第２開口端側傾斜面３８の端部には、内方に突出するスプリング装着穴３９が形成されている。   The valve 32 housed inside the plug 12 includes a small-diameter contact surface 33 that contacts the valve 32 of the socket 13, and a conical first opening that expands from the contact surface 33 toward the second opening end 17. An end-side inclined surface 34, a maximum diameter portion 37 that is formed on the end portion of the first opening end-side inclined surface 34 via a seal member 35 and abuts against the valve seat 36 of the plug 12, and the second from the maximum diameter portion 37. And a conical second opening end side inclined surface 38 that is reduced in diameter toward the opening end 17. In addition, a spring mounting hole 39 protruding inward is formed at the end of the second opening end side inclined surface 38 of the valve 32.

スプリング４１を介しバルブ３２を保持するバルブホルダ４２は、正面視が略長方形状の基部４３と、この基部４３から突出する突起４４とを備えている。基部４３はプラグ１２の段部４６に流路と直交するように掛け渡されている。突起４４はスプリング４１を軸周りに保持している。   A valve holder 42 that holds the valve 32 via a spring 41 includes a base 43 having a substantially rectangular shape when viewed from the front, and a protrusion 44 protruding from the base 43. The base 43 is stretched over the step 46 of the plug 12 so as to be orthogonal to the flow path. The protrusion 44 holds the spring 41 around the axis.

スプリング４１は、バルブ３２のスプリング装着穴３９に嵌挿され、最大径部３７が弁座３６に当接するように付勢している。   The spring 41 is inserted into the spring mounting hole 39 of the valve 32 and urged so that the maximum diameter portion 37 contacts the valve seat 36.

図５は、特許文献１に記載された流体継手である。図５の上半分は流体継手５１のプラグ５２とソケット５３を接合する途中の状態、下半分はプラグ５２とソケット５３の接合が完了した状態の断面図を示す。
この流体継手５１において、図４に示す流体継手１１と実質的に同一である部分については同一符号を付して説明を省略する。 FIG. 5 is a fluid coupling described in Patent Document 1. The upper half of FIG. 5 shows a state in the middle of joining the plug 52 and the socket 53 of the fluid coupling 51, and the lower half shows a cross-sectional view of the state where the joining of the plug 52 and the socket 53 is completed.
In this fluid coupling 51, portions that are substantially the same as those of the fluid coupling 11 shown in FIG.

バルブ５５の第２開口端側傾斜面３８の端部には、第２開口端１７に向かって延びる円柱形状のバルブガイド５６が設けられている。   A cylindrical valve guide 56 extending toward the second opening end 17 is provided at the end of the second opening end side inclined surface 38 of the valve 55.

バルブホルダ５７は段部４６に係止する脚部５８からなり、この脚部５８の内周面にバルブ５５のバルブガイド５６が挿入されて、バルブ５５を軸方向に摺動可能に支持している。   The valve holder 57 includes a leg portion 58 that is engaged with the step portion 46, and a valve guide 56 of the valve 55 is inserted into the inner peripheral surface of the leg portion 58 to support the valve 55 so as to be slidable in the axial direction. Yes.

スプリング５９は、バルブ５５とバルブホルダ５７の間に、プラグ５２のバルブ５５とソケット５３のバルブ５５が互いに当接してスプリング５９が圧縮されたときに、バルブ５５の外径部とバルブホルダ５７の外径部とを結ぶ線に沿った円錐状の外径を有する。   The spring 59 is located between the valve 55 and the valve holder 57 when the valve 55 of the plug 52 and the valve 55 of the socket 53 come into contact with each other and the spring 59 is compressed. It has a conical outer diameter along a line connecting the outer diameter portion.

以上のように、バルブホルダなどの形式が異なる流体継手において、バルブ先端部の形状、およびプラグやソケットの流路形状を変化させているのが一般的である。無理なく流量を確保し流路抵抗を低減するには、ソケットのバルブとプラグのバルブとの接合点を中心とした流れ方向の変化が大きい部分を最適化することが最も重要である。   As described above, in a fluid coupling having a different type such as a valve holder, the shape of the valve tip and the flow path shape of the plug or socket are generally changed. In order to ensure the flow rate and reduce the flow resistance without difficulty, it is most important to optimize the portion where the flow direction changes largely around the junction between the socket valve and the plug valve.

しかし、形式が異なる製品毎にバルブ先端部の流路構成を変更することは、製品の開発効率的にも非常に大きなロス発生を招くことになると共に、得られる流量（発生する抵抗）に差が発生するという問題があった。   However, changing the flow path configuration at the valve tip for each product of a different type will cause a very large loss in terms of product development efficiency, and will result in a difference in the flow rate (generated resistance). There was a problem that occurred.

特開２００９-０９７７１４号公報JP 2009-097714 A

本発明は、前記従来の問題点に鑑みてなされたもので、形式が異なる流体継手の製品開発において、プラグやソケット、バルブの形状を共通化することで、流体継手の開発効率を向上すると共に、流路断面積を一定に保ち圧力損失を一定化させることを課題とする。   The present invention has been made in view of the above-mentioned conventional problems, and in the development of fluid coupling products of different types, the shape of the plug, socket, and valve is made common, thereby improving the efficiency of fluid coupling development. An object of the present invention is to keep the flow path cross-sectional area constant and to make pressure loss constant.

本発明は、前記従来の問題点に鑑みてなされたもので、
挿通孔を有し、互いに液密に接合される第１開口端と、該第１開口端と反対側の端部に流路の入口または出口を規定する第２開口端がそれぞれ形成されたプラグとソケットの内部に、
第１開口端側に形成された小径の当接面と、該当接面から前記第２開口端に向かって拡径する第１開口端側傾斜面と、該第１開口端側傾斜面の端部に形成された最大径部と、該最大径部から前記第２開口端に向かって縮径する第２開口端側傾斜面とからなるバルブと、
前記バルブよりも第２開口端側に設けられたバルブホルダと、
前記バルブホルダに係止し、前記バルブを前記ソケットの内周面に形成された弁座に圧接するように付勢すると共に、前記プラグを前記ソケットに挿入したときに、前記プラグのバルブと前記ソケットのバルブとの当接面が互いに当接することで後退し、前記プラグと前記ソケットの間の流路を接続するスプリングと、
を有する標準化された流体継手に対して、
前記バルブの当接面の径、および前記プラグとソケットの第１開口端の径と、
前記バルブの第１開口端側傾斜面の径、および該第１開口端側傾斜面に対向する前記プラグとソケットの内周面の径と、
前記バルブの最大径部の径、および該最大径部に対向する前記プラグとソケットの内周面の径とを共通にし、
前記第２開口端側傾斜面の軸方向寸法、および第２開口端側傾斜面に対向する前記プラグとソケットの直線形状の内周面の軸方向寸法を変化させたものである。 The present invention has been made in view of the above-mentioned conventional problems,
A first opening end that has an insertion hole and is joined to each other in a liquid-tight manner, and a second opening end that defines an inlet or an outlet of the flow path at an end opposite to the first opening end. And inside the socket,
A small-diameter contact surface formed on the first opening end side, a first opening end-side inclined surface that expands from the corresponding contact surface toward the second opening end, and an end of the first opening end-side inclined surface A valve comprising a maximum diameter portion formed in the portion, and a second opening end side inclined surface that decreases in diameter from the maximum diameter portion toward the second opening end,
A valve holder provided closer to the second opening end than the valve;
The valve is locked to the valve holder, and the valve is urged so as to come into pressure contact with a valve seat formed on the inner peripheral surface of the socket, and when the plug is inserted into the socket, the valve of the plug and the A spring connecting the flow path between the plug and the socket, the contact surface of the socket with the valve retreats by contacting each other,
For a standardized fluid coupling with
The diameter of the contact surface of the valve, and the diameter of the first open end of the plug and socket;
A diameter of the first opening end side inclined surface of the bulb, and a diameter of the inner peripheral surface of the plug and the socket opposed to the first opening end side inclined surface;
The diameter of the maximum diameter portion of the valve, and the diameter of the inner peripheral surface of the socket and the socket facing the maximum diameter portion,
The axial dimension of the second opening end side inclined surface and the axial dimension of the linear inner peripheral surface of the plug and socket opposed to the second opening end inclined surface are changed.

上記構成により、標準化された流体継手に対し形式の異なる流体継手を設計する際に、流体継手の共通化された部分を再度、設計する必要がなく、変化させる部分のみを設計すればよい。従って、流体継手の開発コストを削減することができる。また、形式の異なる流体継手のバルブの第１開口端側傾斜面付近において、標準化された流体継手と同等の流量を確保することができる。   With the above configuration, when designing a fluid coupling of a different type with respect to a standardized fluid coupling, it is not necessary to design a common portion of the fluid coupling again, and only the portion to be changed needs to be designed. Therefore, the development cost of the fluid coupling can be reduced. Further, the flow rate equivalent to that of the standardized fluid coupling can be ensured in the vicinity of the inclined surface on the first opening end side of the valve of the fluid coupling of a different type.

挿通孔を有し、互いに液密に接合される第１開口端と、該第１開口端と反対側の端部に流路の入口または出口を規定する第２開口端がそれぞれ形成されたプラグとソケットの内部に、
第１開口端側に形成された小径の当接面と、該当接面から前記第２開口端に向かって拡径する第１開口端側傾斜面と、該第１開口端側傾斜面の端部に形成された最大径部と、該最大径部から前記第２開口端に向かって縮径する第２開口端側傾斜面とからなるバルブと、
前記バルブよりも第２開口端側に設けられたバルブホルダと、
前記バルブホルダに係止し、前記バルブを前記ソケットの内周面に形成された弁座に圧接するように付勢すると共に、前記プラグを前記ソケットに挿入したときに、前記プラグのバルブと前記ソケットのバルブとの当接面が互いに当接することで後退し、前記プラグと前記ソケットの間の流路を接続するスプリングと、
を有する標準化された流体継手に対して、
前記バルブの第１開口端側傾斜面および最大径部と、該第１開口端側傾斜面および最大径部に対向する前記プラグとソケットの内周面で構成される区間の流路断面を共通にし、
前記第２開口端側傾斜面の軸方向寸法、および第２開口端側傾斜面に対向する前記プラグとソケットの直線形状の内周面の軸方向寸法を変化させることが好ましい。 A first opening end that has an insertion hole and is joined to each other in a liquid-tight manner, and a second opening end that defines an inlet or an outlet of the flow path at an end opposite to the first opening end. And inside the socket,
A small-diameter contact surface formed on the first opening end side, a first opening end-side inclined surface that expands from the corresponding contact surface toward the second opening end, and an end of the first opening end-side inclined surface A valve comprising a maximum diameter portion formed in the portion, and a second opening end side inclined surface that decreases in diameter from the maximum diameter portion toward the second opening end,
A valve holder provided closer to the second opening end than the valve;
The valve is locked to the valve holder, and the valve is urged so as to come into pressure contact with a valve seat formed on the inner peripheral surface of the socket, and when the plug is inserted into the socket, the valve of the plug and the A spring connecting the flow path between the plug and the socket, the contact surface of the socket with the valve retreats by contacting each other,
For a standardized fluid coupling with
The flow path cross section of the section constituted by the first opening end side inclined surface and the maximum diameter portion of the valve and the inner peripheral surface of the plug and the socket facing the first opening end side inclined surface and the maximum diameter portion is common. West,
It is preferable that the axial dimension of the inclined surface on the second opening end side and the axial dimension of the linear inner peripheral surface of the plug and socket facing the inclined surface on the second opening end side are changed.

上記構成により、標準化された流体継手に対し形式の異なる流体継手を設計する際に、バルブの第１開口端側傾斜面付近の流路抵抗を一定にして、圧力損失を一定化することができる。従って、形式の異なる流体継手のバルブの第１開口端側傾斜面付近において、標準化された流体継手と同等の流量を確保することができる。   With the above configuration, when designing a fluid coupling of a different type with respect to a standardized fluid coupling, the flow resistance near the first opening end side inclined surface of the valve can be made constant, and the pressure loss can be made constant. . Therefore, a flow rate equivalent to that of the standardized fluid coupling can be secured in the vicinity of the inclined surface on the first opening end side of the valve of the fluid coupling of a different type.

前記第１開口傾斜面と最大径部との間に、前記弁座に当接するシール部材を設け、該シール部材を共通にすることが好ましい。
これにより、シール性能などの評価をその都度行う必要がない点で、標準化された流体継手に対し形式の異なる流体継手の開発速度を早め、開発の省力化に寄与することができる。 It is preferable that a seal member that contacts the valve seat is provided between the first opening inclined surface and the maximum diameter portion, and the seal member is used in common.
Thereby, since it is not necessary to evaluate seal performance each time, it is possible to increase the development speed of a fluid coupling of a different type with respect to a standardized fluid coupling and contribute to labor saving of development.

本発明によれば、形式の異なる流体継手において、標準化された流体継手のバルブとソケットおよびプラグの挿通孔の一部形状を共通化することで、流体継手の開発コストを低減すると共に、バルブ先端部付近の流量を一定に確保することができる。   According to the present invention, in the fluid coupling of different types, by standardizing a part of the hole of the standardized fluid coupling valve and socket and plug, the development cost of the fluid coupling is reduced, and the valve tip The flow rate in the vicinity of the section can be secured constant.

（Ａ）は本発明の実施形態による流体継手の断面図、（Ｂ）は（Ａ）のバルブの部分拡大断面図、（Ｃ）は（Ａ）の挿通孔の直線部分の拡大断面図。(A) is sectional drawing of the fluid coupling by embodiment of this invention, (B) is the partial expanded sectional view of the valve | bulb of (A), (C) is the expanded sectional view of the linear part of the insertion hole of (A). （Ａ）はＩＳＯ規格に準拠した流体継手の断面図、（Ｂ）は（Ａ）のバルブの部分拡大断面図、（Ｃ）は（Ａ）の挿通孔の直線部分の拡大断面図。(A) is sectional drawing of the fluid coupling based on the ISO standard, (B) is a partial enlarged sectional view of the valve of (A), (C) is an enlarged sectional view of the linear part of the insertion hole of (A). 本実施形態による流体継手、およびＩＳＯ規格に準拠した流体継手の流量と圧力損失との関係を示す。The relationship between the flow volume and pressure loss of the fluid coupling according to this embodiment and the fluid coupling conforming to the ISO standard is shown. 従来の流体継手の断面図。Sectional drawing of the conventional fluid coupling. 従来の他の流体継手の断面図。Sectional drawing of the other conventional fluid coupling.

以下、添付図面を参照して本発明の実施形態を詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

図１は、本発明の実施形態によるＩＳＯ規格に準拠しない流体継手１１ａを示し、図２は、ＩＳＯ規格に準拠した流体継手１１ｂを示す。いずれも、図４のタイプの流体継手と同一であり、対応する部分には同符号を付して説明を省略する。
図１（Ａ）,図２（Ａ）の上半分は、流体継手１１ａ,１１ｂのプラグ１２とソケット１３の接合途中の状態、下半分はプラグ１２とソケット１３の接合完了状態の断面図を示す。 FIG. 1 illustrates a fluid coupling 11a that does not conform to the ISO standard according to an embodiment of the present invention, and FIG. 2 illustrates a fluid coupling 11b that conforms to the ISO standard. Each of them is the same as the fluid coupling of the type shown in FIG.
The upper half of FIGS. 1A and 2A is a cross-sectional view of the fluid couplings 11a and 11b in the middle of joining of the plug 12 and the socket 13, and the lower half is a sectional view of the joint of the plug 12 and the socket 13 completed. .

図１（Ａ）において、プラグ１２及びソケット１３は、バルブ３２および挿通孔１４の一部形状を除いて、図２（Ａ）に示すＩＳＯ規格に準拠した流体継手１１ｂと実質的に同一であり、対応する部分については同一符号を付して説明を省略する。   In FIG. 1A, the plug 12 and the socket 13 are substantially the same as the fluid coupling 11b conforming to the ISO standard shown in FIG. 2A except for a part of the shape of the valve 32 and the insertion hole 14. Corresponding portions are denoted by the same reference numerals and description thereof is omitted.

流体継手１１ａは、図２（Ａ）の流体継手１１ｂに比べて軸方向に短くしているが、バルブ３２および挿通孔１４のＬ区間の形状を共通化している。ここでＬ区間は当接する一対のバルブ３２の当接面３３、第１開口端側傾斜面３４、シール部材３５、最大径部３７およびこれらと流路を形成する挿通孔１４の一部を包含する領域を指している。つまり、当接面３３の径と第１開口端１６の挿通孔１４の径とを共通にすることで、第１開口端１６の流路断面積Ｓ１を一体に保っている。また、第１開口端側傾斜面３４の径とこれに対向する挿通孔１４の内周面の径とを共通にすることで、第１開口端側傾斜面３４と挿通孔１４の内周面とで形成される流路断面積Ｓ２を一定に保っている。同様に、最大径部３７の径と、これに対向する挿通孔１４の内周面の径とを共通にすることで、最大径部３７と挿通孔１４の内周面とで形成される流路断面積Ｓ３を一定に保っている。従って、流体継手１１ｂよりも軸方向に短い流体継手１１ａを開発する際に、バルブ３２および挿通孔１４のＬ区間を再度、設計する必要がなく、開発コストを削減することができる。Ｌ区間の形状を共通化することで、流体継手１１ａと１１ｂのバルブ３２先端部近傍の流路抵抗を一定に保ち、流体継手１１ａにおいてもＩＳＯ規格に準拠した流体継手１１ｂと同等の流量を確保することができる。また、シール部材３５を共通化しているため、シール性能などの評価をその都度行う必要がない点で、開発速度を早め、開発の省力化に寄与することができる。   The fluid coupling 11a is shorter in the axial direction than the fluid coupling 11b of FIG. 2A, but the shape of the L section of the valve 32 and the insertion hole 14 is made common. Here, the L section includes the contact surfaces 33 of the pair of valves 32 that contact, the first opening end side inclined surface 34, the seal member 35, the maximum diameter portion 37, and a part of the insertion hole 14 that forms a flow path with these. It points to the area. That is, by making the diameter of the contact surface 33 and the diameter of the insertion hole 14 of the first opening end 16 common, the flow path cross-sectional area S1 of the first opening end 16 is kept integral. In addition, by making the diameter of the first opening end side inclined surface 34 and the diameter of the inner peripheral surface of the insertion hole 14 facing this common, the first opening end side inclined surface 34 and the inner peripheral surface of the insertion hole 14. The flow path cross-sectional area S2 formed by is maintained constant. Similarly, the flow formed by the maximum diameter portion 37 and the inner peripheral surface of the insertion hole 14 by making the diameter of the maximum diameter portion 37 and the diameter of the inner peripheral surface of the insertion hole 14 facing this common. The road cross-sectional area S3 is kept constant. Therefore, when developing the fluid coupling 11a shorter in the axial direction than the fluid coupling 11b, it is not necessary to design the L section of the valve 32 and the insertion hole 14 again, and the development cost can be reduced. By sharing the shape of the L section, the flow resistance in the vicinity of the tip of the valve 32 of the fluid couplings 11a and 11b is kept constant, and the fluid coupling 11a also has a flow rate equivalent to that of the fluid coupling 11b compliant with the ISO standard. can do. Further, since the seal member 35 is made common, it is not necessary to evaluate the seal performance each time, so that the development speed can be increased and the development can be saved.

軸方向長さを短くするため、具体的には、図１（Ｂ）および図２（Ｂ）に示すように、バルブ３２の第２開口端側傾斜面３８の軸方向長さをＬ１からＬ２に短くすると共に、Ｌ１からＬ２に短くしたのと同じ比率で挿通孔１４の内周面のうち、直線部分４８の長さをＬ３からＬ４に短くしている（図１（Ｃ）,図２（Ｃ）参照）。従って、バルブ３２の第２開口端側傾斜面３８の軸方向長さ、および挿通孔１４の直線部分４８の長さを変えるだけで、簡単に流体継手１１ｂの長さを変更することができる。   In order to shorten the axial length, specifically, as shown in FIGS. 1B and 2B, the axial length of the second opening end side inclined surface 38 of the valve 32 is changed from L1 to L2. In addition, the length of the straight portion 48 is shortened from L3 to L4 in the inner peripheral surface of the insertion hole 14 at the same ratio as the length from L1 to L2 (FIGS. 1C and 2). (See (C)). Therefore, the length of the fluid coupling 11b can be easily changed only by changing the axial length of the second opening end side inclined surface 38 of the valve 32 and the length of the linear portion 48 of the insertion hole 14.

また、バルブ３２の第２開口端側傾斜面３８を短くすることで、水平方向となす角度がθ１からθ２に大きくなるため、流路抵抗が増大する。しかし、図３に示すように、軸方向に短くした本実施形態による流体継手１１ａとＩＳＯ規格に準拠した流体継手１１ｂとの圧力損失を比較すると、流路抵抗を低減するために最も重要なＬ区間の形状を共通化しているため、流路抵抗が増大することによる圧力損失の増大が抑えられている。   Further, by shortening the second opening end side inclined surface 38 of the valve 32, the angle formed with the horizontal direction increases from θ1 to θ2, so that the flow path resistance increases. However, as shown in FIG. 3, when comparing the pressure loss between the fluid coupling 11a according to the present embodiment shortened in the axial direction and the fluid coupling 11b conforming to the ISO standard, L is the most important for reducing the channel resistance. Since the shape of the section is made common, an increase in pressure loss due to an increase in flow path resistance is suppressed.

本実施形態では、ＩＳＯ規格に準拠したプラグ１２とソケット１３とを接合し、軸方向に短いプラグ１２とソケット１３とを接合しているが、Ｌ区間を共通にしているため、軸方向に短いプラグ１２をＩＳＯ規格に準拠したソケット１３に接合することができ、また、ＩＳＯ規格に準拠したプラグ１２を軸方向に短いソケット１３に接合することができる。これにより、流体継手の設置スペースに合わせて、最適な軸方向長さの流体継手を選択することができる。   In this embodiment, the plug 12 conforming to the ISO standard and the socket 13 are joined and the short plug 12 and the socket 13 are joined in the axial direction. However, since the L section is common, the plug 12 is short in the axial direction. The plug 12 can be joined to the socket 13 conforming to the ISO standard, and the plug 12 conforming to the ISO standard can be joined to the socket 13 short in the axial direction. Thereby, the fluid coupling of the optimal axial direction length can be selected according to the installation space of a fluid coupling.

１１ａ 流体継手
１１ｂ 流体継手
１２ プラグ
１３ ソケット
１４ 挿通孔
１６ 第１開口端
１７ 第２開口端
３２ バルブ
３３ 当接面
３４ 第１開口端側傾斜面
３５ シール部材
３７ 最大径部
３８ 第２開口端側傾斜面
４１ スプリング
４２ バルブホルダ
５１ 流体継手
５２ プラグ
５３ ソケット
５５ バルブ
５７ バルブホルダ 11a Fluid coupling 11b Fluid coupling 12 Plug 13 Socket 14 Insertion hole 16 First opening end 17 Second opening end 32 Valve 33 Contact surface 34 First opening end side inclined surface 35 Seal member 37 Maximum diameter portion 38 Second opening end side Inclined surface 41 Spring 42 Valve holder 51 Fluid coupling 52 Plug 53 Socket 55 Valve 57 Valve holder

Claims (3)

挿通孔を有し、互いに液密に接合される第１開口端と、該第１開口端と反対側の端部に流路の入口または出口を規定する第２開口端がそれぞれ形成されたプラグとソケットの内部に、
第１開口端側に形成された小径の当接面と、該当接面から前記第２開口端に向かって拡径する第１開口端側傾斜面と、該第１開口端側傾斜面の端部に形成された最大径部と、該最大径部から前記第２開口端に向かって縮径する第２開口端側傾斜面とからなるバルブと、
前記バルブよりも第２開口端側に設けられたバルブホルダと、
前記バルブホルダに係止し、前記バルブを前記ソケットの内周面に形成された弁座に圧接するように付勢すると共に、前記プラグを前記ソケットに挿入したときに、前記プラグのバルブと前記ソケットのバルブとの当接面が互いに当接することで後退し、前記プラグと前記ソケットの間の流路を接続するスプリングと、
を有する標準化された流体継手に対して、
前記バルブの当接面の径、および前記プラグとソケットの第１開口端の径と、
前記バルブの第１開口端側傾斜面の径、および該第１開口端側傾斜面に対向する前記プラグとソケットの内周面の径と、
前記バルブの最大径部の径、および該最大径部に対向する前記プラグとソケットの内周面の径とを共通にし、
前記第２開口端側傾斜面の軸方向寸法、および第２開口端側傾斜面に対向する前記プラグとソケットの直線形状の内周面の軸方向寸法を変化させたことを特徴とする流体継手。 A first opening end that has an insertion hole and is joined to each other in a liquid-tight manner, and a second opening end that defines an inlet or an outlet of the flow path at an end opposite to the first opening end. And inside the socket,
A small-diameter contact surface formed on the first opening end side, a first opening end-side inclined surface that expands from the corresponding contact surface toward the second opening end, and an end of the first opening end-side inclined surface A valve comprising a maximum diameter portion formed in the portion, and a second opening end side inclined surface that decreases in diameter from the maximum diameter portion toward the second opening end,
A valve holder provided closer to the second opening end than the valve;
The valve is locked to the valve holder, and the valve is urged so as to come into pressure contact with a valve seat formed on the inner peripheral surface of the socket, and when the plug is inserted into the socket, the valve of the plug and the A spring connecting the flow path between the plug and the socket, the contact surface of the socket with the valve retreats by contacting each other,
For a standardized fluid coupling with
The diameter of the contact surface of the valve, and the diameter of the first open end of the plug and socket;
A diameter of the first opening end side inclined surface of the bulb, and a diameter of the inner peripheral surface of the plug and the socket opposed to the first opening end side inclined surface;
The diameter of the maximum diameter portion of the valve, and the diameter of the inner peripheral surface of the socket and the socket facing the maximum diameter portion,
The fluid coupling, wherein the axial dimension of the second opening end side inclined surface and the axial dimension of the linear inner peripheral surface of the plug and socket facing the second opening end inclined surface are changed. . 挿通孔を有し、互いに液密に接合される第１開口端と、該第１開口端と反対側の端部に流路の入口または出口を規定する第２開口端がそれぞれ形成されたプラグとソケットの内部に、
第１開口端側に形成された小径の当接面と、該当接面から前記第２開口端に向かって拡径する第１開口端側傾斜面と、該第１開口端側傾斜面の端部に形成された最大径部と、該最大径部から前記第２開口端に向かって縮径する第２開口端側傾斜面とからなるバルブと、
前記バルブよりも第２開口端側に設けられたバルブホルダと、
前記バルブホルダに係止し、前記バルブを前記ソケットの内周面に形成された弁座に圧接するように付勢すると共に、前記プラグを前記ソケットに挿入したときに、前記プラグのバルブと前記ソケットのバルブとの当接面が互いに当接することで後退し、前記プラグと前記ソケットの間の流路を接続するスプリングと、
を有する標準化された流体継手に対して、
前記バルブの第１開口端側傾斜面および最大径部と、該第１開口端側傾斜面および最大径部に対向する前記プラグとソケットの内周面とで構成される区間の流路断面を共通にし、
前記第２開口端側傾斜面の軸方向寸法、および第２開口端側傾斜面に対向する前記プラグとソケットの直線形状の内周面の軸方向寸法を変化させたことを特徴とする流体継手。 A first opening end that has an insertion hole and is joined to each other in a liquid-tight manner, and a second opening end that defines an inlet or an outlet of the flow path at an end opposite to the first opening end. And inside the socket,
A small-diameter contact surface formed on the first opening end side, a first opening end-side inclined surface that expands from the corresponding contact surface toward the second opening end, and an end of the first opening end-side inclined surface A valve comprising a maximum diameter portion formed in the portion, and a second opening end side inclined surface that decreases in diameter from the maximum diameter portion toward the second opening end,
A valve holder provided closer to the second opening end than the valve;
The valve is locked to the valve holder, and the valve is urged so as to come into pressure contact with a valve seat formed on the inner peripheral surface of the socket, and when the plug is inserted into the socket, the valve of the plug and the A spring connecting the flow path between the plug and the socket, the contact surface of the socket with the valve retreats by contacting each other,
For a standardized fluid coupling with
A flow path cross section of a section constituted by the first opening end side inclined surface and the maximum diameter portion of the valve, and the plug and the inner peripheral surface of the socket facing the first opening end side inclined surface and the maximum diameter portion. In common,
The fluid coupling, wherein the axial dimension of the second opening end side inclined surface and the axial dimension of the linear inner peripheral surface of the plug and socket facing the second opening end inclined surface are changed. . 前記第１開口端側傾斜面と最大径部との間に、前記弁座に当接するシール部材を設け、該シール部材を共通にしたことを特徴とする請求項１または２に記載の流体継手。   3. The fluid coupling according to claim 1, wherein a seal member that contacts the valve seat is provided between the first opening end-side inclined surface and the maximum diameter portion, and the seal member is used in common. .
JP2010268452A 2010-12-01 2010-12-01 Fluid coupling Pending JP2012117618A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0653879U (en) * 1992-11-13 1994-07-22 ポップリベット・ファスナー株式会社 Pipe holder
JP2002038909A (en) * 2000-07-25 2002-02-06 Toyota Motor Corp Valve system
JP2007223250A (en) * 2006-02-24 2007-09-06 Seiko Epson Corp Housing, lower device, recording device, and liquid jet device
JP2010065774A (en) * 2008-09-11 2010-03-25 Bridgestone Corp Pipe joint with valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0653879U (en) * 1992-11-13 1994-07-22 ポップリベット・ファスナー株式会社 Pipe holder
JP2002038909A (en) * 2000-07-25 2002-02-06 Toyota Motor Corp Valve system
JP2007223250A (en) * 2006-02-24 2007-09-06 Seiko Epson Corp Housing, lower device, recording device, and liquid jet device
JP2010065774A (en) * 2008-09-11 2010-03-25 Bridgestone Corp Pipe joint with valve

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