JP6649004B2 - Pipe fitting, fluid control device, and fluid control device - Google Patents

Pipe fitting, fluid control device, and fluid control device Download PDF

Info

Publication number
JP6649004B2
JP6649004B2 JP2015151800A JP2015151800A JP6649004B2 JP 6649004 B2 JP6649004 B2 JP 6649004B2 JP 2015151800 A JP2015151800 A JP 2015151800A JP 2015151800 A JP2015151800 A JP 2015151800A JP 6649004 B2 JP6649004 B2 JP 6649004B2
Authority
JP
Japan
Prior art keywords
flange portion
pipe
leaf spring
housing
pressing
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.)
Active
Application number
JP2015151800A
Other languages
Japanese (ja)
Other versions
JP2017032048A (en
Inventor
泰司 千葉
泰司 千葉
一誠 渡辺
一誠 渡辺
敏之 稲田
敏之 稲田
篠原　努
努 篠原
出 四方
出 四方
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.)
Fujikin Inc
Original Assignee
Fujikin Inc
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 Fujikin Inc filed Critical Fujikin Inc
Priority to JP2015151800A priority Critical patent/JP6649004B2/en
Publication of JP2017032048A publication Critical patent/JP2017032048A/en
Application granted granted Critical
Publication of JP6649004B2 publication Critical patent/JP6649004B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Description

本発明は、管継手、流体制御機器、及び流体制御装置に関する。   The present invention relates to a pipe joint, a fluid control device, and a fluid control device.

従来の管継手として、特許文献１に記載の流体継手が開示されている。この流体継手は、互いに連通する流体通路を有している継手部材たる第１及び第２管部材と、これら第１及び第２管部材同士を結合する結合手段とを備えている。第１及び第２管部材の一端にはそれぞれ第１及び第２フランジ部が形成されている。そして、結合手段は、上壁及び一対の側壁から形成され、一対の側壁によって第１及び第２フランジ部を第１及び第２管部材の管長方向（軸方向）の両側から挟持するクリップと、第２管部材の外周面に当接されて弾性力によって第１及び第２管部材の管径方向（軸方向の直交方向）に第２管部材を押圧する抜け止めばねとを有している。また、第１フランジ部の外周面と第２フランジ部の内周面との間には、シール部材が介在されている。   As a conventional pipe coupling, a fluid coupling described in Patent Document 1 is disclosed. The fluid coupling includes first and second pipe members, which are coupling members having fluid passages communicating with each other, and coupling means for coupling the first and second pipe members. First and second flange portions are formed at one ends of the first and second pipe members, respectively. And a clip formed by the upper wall and the pair of side walls, the first and second flange portions being sandwiched by the pair of side walls from both sides in the pipe length direction (axial direction) of the first and second pipe members; A retaining spring that abuts against an outer peripheral surface of the second pipe member and presses the second pipe member in a pipe radial direction (a direction orthogonal to the axial direction) of the first and second pipe members by an elastic force; . Further, a seal member is interposed between the outer peripheral surface of the first flange portion and the inner peripheral surface of the second flange portion.

特開２０１３−９６５０７号公報JP 2013-96507 A


ところで、近年、種々の装置のコンパクト化に伴い、装置の各構成機器の小型化も促進され、装置内で使用される従来の小型の管継手及びバルブ（流体制御機器）にも更なる小型化が要求されている。
しかしながら、装置が小型である場合、装置内における施工スペースも必然的に狭くなるため、回転使用するスパナ等の工具を用いて管継手を結合する作業は困難を極める。
By the way, in recent years, along with downsizing of various devices, miniaturization of each component device of the device has been promoted, and further miniaturization of conventional small pipe fittings and valves (fluid control devices) used in the device has been promoted. Is required.
However, when the device is small, the construction space in the device is inevitably narrow, and it is extremely difficult to join the pipe joints using a tool such as a wrench that is used for rotation.

また、管継手におけるシール性を向上するためには、樹脂等の弾性体からなるシール部材（Ｏリングやガスケット）を使用するのが好ましい。しかし、管継手の組立の際、極小のシール部材を管継手に取り付ける作業は困難を極め、極小ゆえに作業時にシール部材を紛失し易いといった問題もある。
また、装置のメンテナンス等により管継手を分解し、装置に対し繰り返し脱着することが想定される。この場合には、シール部材の紛失の可能性が更に高まる。 Further, in order to improve the sealing property of the pipe joint, it is preferable to use a sealing member (O-ring or gasket) made of an elastic body such as resin. However, when assembling the pipe joint, it is extremely difficult to attach a very small seal member to the pipe joint, and there is also a problem that the seal member is easily lost during the work due to the extremely small size.
In addition, it is assumed that the pipe joint is disassembled due to maintenance of the apparatus and is repeatedly attached to and detached from the apparatus. In this case, the possibility of loss of the seal member is further increased.

また、樹脂製のシール部材を用いる場合には、管継手を繰り返し分解、脱着すると、金属製である第１及び第２フランジ部同士の接触箇所に傷が生じ、管継手のシール性を低下させるおそれがある。
また、上記クリップに弾性力を付与して第１及び第２管部材を挟持する場合、クリップの弾性力が各管継手でばらつくことが想定される。このような第１及び第２管部材を挟持に関わるばね部材の弾性力にばらつきが想定される場合、管継手のシール性を確保するためには、安全率を掛けた大きな値にばね部材の弾性力を予め設定する必要がある。 In the case where a resin-made sealing member is used, if the pipe joint is repeatedly disassembled and detached, a scratch is generated at a contact point between the first and second flange portions made of metal, thereby deteriorating the sealing property of the pipe joint. There is a risk.
Further, when the first and second pipe members are sandwiched by applying an elastic force to the clip, it is assumed that the elastic force of the clip varies at each pipe joint. When it is assumed that the elastic force of the spring member involved in clamping the first and second pipe members varies, in order to ensure the sealability of the pipe joint, the spring member has a large value multiplied by the safety factor. It is necessary to set the elastic force in advance.

しかしながら、ばね部材の弾性力を大きくし過ぎると、ばね部材の取り付けの作業性が悪化するおそれがある。
本発明はこのような課題に鑑みてなされたものであり、その目的とするところは、施工性及びシール性の双方に優れ、小型装置への使用に好適であり、生産性及び信頼性の高い管継手、流体制御機器、及び流体制御装置を提供することにある。 However, if the elastic force of the spring member is too large, the workability of attaching the spring member may be deteriorated.
The present invention has been made in view of such a problem, and aims at being excellent in both workability and sealability, suitable for use in small devices, and having high productivity and reliability. It is to provide a pipe joint, a fluid control device, and a fluid control device.

上記目的を達成するため、本発明の管継手と、流体制御機器、及び流体制御装置に用いる管継手は、一端に第１フランジ部を有する第１管部材と、一端に第２フランジ部を有する第２管部材と、一端に内周が縮径されてなる内フランジ部及び該内フランジ部よりなる第１端面開口を有するとともに、他端に第２端面開口を有する筐体と、筐体内に収容され、第２フランジ部を第１フランジ部に向けて押圧する板ばねとを備え、筐体は、第１フランジ部が内フランジ部に係止され且つ第１及び第２管部材の管長方向に第２フランジ部が第１フランジ部に当接した状態で、板ばねが筐体内に収容される第１側面開口と、板ばねの収容空間と、第１側面開口の対向位置において収容空間に連通する第２側面開口とを有し、板ばねは、板ばねを収容空間内で位置決めするための位置決め部と、位置決め部に対向し、第２フランジ部を押圧する押圧部と、位置決め部及び押圧部から連なり、押圧部に押圧力を付与する折曲部とを含み、第１管部材をその他端から第２端面開口を経て第１端面開口に挿通することで、第１フランジ部が内フランジ部に係止され、第２端面開口に第２フランジ部から第２管部材を挿通し、板ばねを第１側面開口から収容空間に押し込み、押圧部を位置決め部に近接させる方向に撓ませながら収容空間に収容することにより、第２フランジ部が第１フランジ部に向けて押圧されて筐体内で第２フランジ部と第１フランジ部とがシール部を形成し、シール部は、第１及び第２フランジ部の一方に凸設した環状の弾性部材が第１及び第２フランジ部の他方に面接触してなる。 In order to achieve the above object, a pipe joint of the present invention, a fluid control device, and a pipe joint used for a fluid control device have a first pipe member having a first flange portion at one end and a second flange portion at one end. A housing having a second pipe member, an inner flange portion having an inner diameter reduced at one end and a first end surface opening formed by the inner flange portion, and a second end surface opening at the other end; A leaf spring that is housed and presses the second flange portion toward the first flange portion, wherein the housing has the first flange portion locked to the inner flange portion and the first and second pipe members have a lengthwise direction. In a state where the second flange portion is in contact with the first flange portion, the first side opening in which the leaf spring is accommodated in the housing, the accommodation space for the leaf spring, and the accommodation space at a position facing the first side opening. and a second side opening communicating, leaf spring housing space leaf springs A positioning portion for positioning at the inner, facing the positioning portion includes a pressing portion for pressing the second flange portion, continuous with the positioning portion and the pressing portion, and a bent portion for applying a pressing force to the pressing portion, By inserting the first pipe member from the other end into the first end face opening through the second end face opening, the first flange portion is locked to the inner flange portion, and the second pipe is inserted into the second end face opening from the second flange portion. The second flange portion is directed toward the first flange portion by inserting the member , pushing the leaf spring into the accommodation space from the first side opening, and accommodating the pressing portion in the accommodation space while bending the pressing portion in a direction to approach the positioning portion. And the second flange portion and the first flange portion form a seal portion in the housing, and the seal portion is formed by an annular elastic member protruding from one of the first and second flange portions. 2 Make sure that the other side of the flange .

本発明の管継手、流体制御機器、及び流体制御装置によれば、施工性及びシール性の双方に優れ、小型の製造装置への使用に好適であり、生産性及び信頼性の高い管継手、流体制御機器、及び流体制御装置を提供することができる。   According to the pipe joint, the fluid control device, and the fluid control device of the present invention, the pipe joint is excellent in both workability and sealability, is suitable for use in a small-sized manufacturing device, and has high productivity and reliability. A fluid control device and a fluid control device can be provided.

本発明の一実施形態に係る管継手の斜視図である。It is a perspective view of a pipe joint concerning one embodiment of the present invention. 図１の管継手の一部縦断面図である。FIG. 2 is a partial vertical sectional view of the pipe joint of FIG. 1. 図２の第１管部材の斜視図である。FIG. 3 is a perspective view of a first pipe member of FIG. 2. 図２の第２管部材の斜視図である。FIG. 3 is a perspective view of a second pipe member of FIG. 2. 図４の第２フランジ部の縦断面図である。FIG. 5 is a longitudinal sectional view of a second flange portion of FIG. 4. 図２の筐体の斜視図である。FIG. 3 is a perspective view of the housing of FIG. 2. 図６の筐体をＡ−Ａ方向から見た断面図である。It is sectional drawing which looked at the housing | casing of FIG. 6 from AA direction. 図６の筐体をＢ−Ｂ方向から見た断面図である。It is sectional drawing which looked at the housing | casing of FIG. 6 from the BB direction. 図２の板ばねの斜視図である。FIG. 3 is a perspective view of the leaf spring of FIG. 2. 図９の板ばねをＣ方向から見た図である。It is the figure which looked at the leaf spring of FIG. 9 from C direction. 図２の座金の斜視図である。FIG. 3 is a perspective view of the washer of FIG. 2. 図２のブッシュの斜視図である。FIG. 3 is a perspective view of the bush of FIG. 2. 図１の管継手を分解して各部材を断面で示した分解斜視図である。FIG. 2 is an exploded perspective view showing each member in a cross section by disassembling the pipe joint of FIG. 1. 図１３の状態から、第１管部材を筐体に挿入した状態を示した図である。FIG. 14 is a diagram illustrating a state where the first pipe member is inserted into the housing from the state illustrated in FIG. 13. 図１４の状態から、座金を第２管部材に装着した状態を示した図である。It is the figure which showed the state which mounted the washer to the 2nd pipe member from the state of FIG. 図１５の状態から、ブッシュを第２管部材に装着した状態を示した図である。It is the figure which showed the state which mounted the bush to the 2nd pipe member from the state of FIG. 図１６の状態から、第２管部材を筐体に挿入した状態を示した図である。FIG. 17 is a diagram illustrating a state where the second pipe member is inserted into the housing from the state of FIG. 16. 図１７の状態から、板ばねを筐体に装着し、管継手の組み立てが完成した状態を示した図である。FIG. 18 is a view showing a state where the leaf spring is mounted on the housing from the state of FIG. 17 and assembly of the pipe joint is completed. 図１８の管継手の縦断面図である。It is a longitudinal cross-sectional view of the pipe joint of FIG. 図１９のシール部を拡大した図である。FIG. 20 is an enlarged view of the seal portion of FIG. 19. 図１８の管継手の一部縦断面図である。FIG. 19 is a partial longitudinal sectional view of the pipe joint of FIG. 18. 図２１の押圧部を拡大した図である。FIG. 22 is an enlarged view of a pressing portion of FIG. 21.

以下、図面に基づき本発明の一実施形態に係る管継手について説明する。
図１に示すように、管継手１は、流体通路２を形成する第１管部材４及び第２管部材６と、第１及び第２管部材４、６を収容して結合するための筐体８とを有している。第１管部材４及び筐体８は金属製であり、第２管部材６も後で詳述する弾性部材１９を除き金属製である。管継手１は、第１及び第２管部材４、６の管継手１における外端（他端）４ａ、６ａが図示しない配管や自動式又は手動式の弁の入口又は出口に溶接等によって接続され、流体制御機器が形成される。 Hereinafter, a pipe joint according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the pipe joint 1 is a casing for accommodating and coupling the first and second pipe members 4 and 6 forming the fluid passage 2 with the first and second pipe members 4 and 6. And a body 8. The first pipe member 4 and the housing 8 are made of metal, and the second pipe member 6 is also made of metal except for an elastic member 19 described later in detail. The outer end (the other end) 4a, 6a of the first and second pipe members 4, 6 is connected to a pipe (not shown) or an inlet or outlet of an automatic or manual valve by welding or the like. Thus, a fluid control device is formed.

この流体制御機器は、何れも図示しないフローコントローラ、レギュレータ等が配管で接続された流体制御装置に使用される。この流体制御装置は、例えば図示しない小型装置の流体処理ライン等で使用される。この小型装置は、管継手１や上記弁を含む小型の各機器から構成される。   This fluid control device is used for a fluid control device in which a flow controller, a regulator, and the like, not shown, are connected by piping. The fluid control device is used, for example, in a fluid processing line of a small device (not shown). This small device is composed of small devices including the pipe joint 1 and the valve.

図２に示すように、管継手１は、筐体８内に収容された板ばね１０及び座金１２と、筐体８に取り付けられたブッシュ１４とを更に有している。板ばね１０、座金１２、及びブッシュ１４は何れも金属製である。
図３に示すように、第１管部材４には、管継手１における内端（一端）４ｂに第１フランジ部１６が形成されている。第１フランジ部１６は、内端４ｂに第１管部材４の管径方向Ｙに沿う平坦面１６ａを有し、平坦面１６ａには流体通路２が開口されている。 As shown in FIG. 2, the pipe joint 1 further includes a leaf spring 10 and a washer 12 housed in the housing 8, and a bush 14 attached to the housing 8. The leaf spring 10, the washer 12, and the bush 14 are all made of metal.
As shown in FIG. 3, the first pipe member 4 has a first flange portion 16 formed at an inner end (one end) 4 b of the pipe joint 1. The first flange portion 16 has a flat surface 16a along the pipe diameter direction Y of the first pipe member 4 at the inner end 4b, and the fluid passage 2 is opened in the flat surface 16a.

図４に示すように、第２管部材６には、管継手１における内端（一端）６ｂに第１フランジ部１６と略同径の第２フランジ部１８が形成されている。
図５に示すように、第２フランジ部１８には、流体通路２が開口され、流体通路２の開口を囲むようにして環状溝１８ａが凹設されている。環状溝１８ａには環状の弾性部材１９が嵌合されることにより、弾性部材１９が装着された第２フランジ部１８ひいては第２管部材６が形成される。 As shown in FIG. 4, the second pipe member 6 has a second flange portion 18 having substantially the same diameter as the first flange portion 16 at an inner end (one end) 6 b of the pipe joint 1.
As shown in FIG. 5, the fluid passage 2 is opened in the second flange portion 18, and an annular groove 18 a is formed so as to surround the opening of the fluid passage 2. An annular elastic member 19 is fitted into the annular groove 18a, thereby forming the second flange portion 18 to which the elastic member 19 is attached, and thus the second pipe member 6.

弾性部材１９は、例えばＰＴＦＥ（ポリテトラフルオロエチレン、Ｐｏｌｙｔｅｔｒａｆｌｕｏｒｏｅｔｈｙｌｅｎｅ）等の比較的高硬度の樹脂から形成されている。弾性部材１９は、環状溝１８ａに嵌合される環状の嵌合部１９ａと、嵌合部１９ａから断面視三角形状に突設された環状の突起部１９ｂとを備えている。突起部１９ｂは、突起部１９ｂの外周をなす外テーパ面１９ｂ１と、突起部１９ｂの内周をなす内テーパ面１９ｂ２と、外及び内テーパ面１９ｂ１、１９ｂ２の間に形成された管径方向Ｙに沿う平坦面１９ｂ３とから形成されている。   The elastic member 19 is formed of a relatively high-hardness resin such as PTFE (polytetrafluoroethylene, Polytetrafluoroethylene). The elastic member 19 includes an annular fitting portion 19a fitted into the annular groove 18a, and an annular projecting portion 19b projecting from the fitting portion 19a in a triangular cross-section. The projection 19b has an outer tapered surface 19b1 forming the outer circumference of the projection 19b, an inner tapered surface 19b2 forming the inner circumference of the projection 19b, and a pipe diameter direction Y formed between the outer and inner tapered surfaces 19b1, 19b2. Is formed from the flat surface 19b3.

一方、第２フランジ部１８には、環状溝１８ａと流体通路２との間に内周壁１８ｂが形成され、環状溝１８ａの外周側には外周壁１８ｃが形成されている。そして、図５に示すように、内周及び外周壁１８ｂ、１８ｃをそれぞれ内及び外テーパ面１９ｂ２、１９ｂ１に沿う方向にプライヤー又は専用治具等でかしめて屈曲させる。これより、嵌合部１９ａの内周及び外周のコーナーが若干潰れ、内周及び外周壁１８ｂ、１８ｃが環状溝１８ａにおける弾性部材１９の係止爪として機能し、環状溝１８ａからの弾性部材１９の脱落が阻止される。   On the other hand, an inner peripheral wall 18b is formed on the second flange portion 18 between the annular groove 18a and the fluid passage 2, and an outer peripheral wall 18c is formed on the outer peripheral side of the annular groove 18a. Then, as shown in FIG. 5, the inner and outer peripheral walls 18b, 18c are caulked and bent in a direction along the inner and outer tapered surfaces 19b2, 19b1, respectively, with pliers or dedicated jigs. Thus, the inner and outer peripheral corners of the fitting portion 19a are slightly crushed, and the inner and outer peripheral walls 18b and 18c function as locking claws of the elastic member 19 in the annular groove 18a. Is prevented from falling off.

図６から図８に示すように、筐体８は直方体状の小型の外形（例えば、図６で見たときの管径方向Ｙの長さ：約１２ｍｍ、管長方向Ｘの長さ：約１５ｍｍ、幅方向Ｚの長さ：約１０ｍｍ）を有し、筐体８内は円柱状の空洞となっている。
筐体８の一端８ａは、第１管部材４の外端４ａが突出し、筐体８の内周が縮径されてなる内フランジ部２０が形成されている。一端８ａには、内フランジ部２０により第１端面開口２２が形成されている。第１端面開口２２は、第１及び第２フランジ部１６、１８よりも小径の円形をなしている。一方、筐体８の他端８ｂには、第２管部材６の外端６ａが突出する第２端面開口２４が形成されている。 As shown in FIGS. 6 to 8, the housing 8 has a small rectangular parallelepiped outer shape (for example, the length in the pipe diameter direction Y as viewed in FIG. 6: about 12 mm, the length in the pipe length direction X: about 15 mm). , The length in the width direction Z: about 10 mm), and the inside of the housing 8 is a cylindrical cavity.
An outer end 4a of the first tube member 4 protrudes from one end 8a of the housing 8, and an inner flange portion 20 formed by reducing the inner circumference of the housing 8 is formed. A first end face opening 22 is formed at one end 8 a by the inner flange portion 20. The first end face opening 22 has a smaller diameter than the first and second flange portions 16 and 18. On the other hand, a second end surface opening 24 from which the outer end 6a of the second pipe member 6 projects is formed at the other end 8b of the housing 8.

第２端面開口２４は、第１及び第２フランジ部１６、１８の径よりも若干大径の円形をなし、第１及び第２フランジ部１６、１８が挿通可能である。
また、筐体８の側面８ｃには、第１フランジ部１６が内フランジ部２０に係止され且つ第１及び第２管部材４、６の管長方向Ｘに第２フランジ部１８の弾性部材１９が第１フランジ部１６の平坦面１６ａに当接した状態で、板ばね１０が筐体８内に収容される第１側面開口２６が形成されている。 The second end face opening 24 has a circular shape slightly larger in diameter than the diameters of the first and second flange portions 16, 18, and the first and second flange portions 16, 18 can be inserted therethrough.
Further, on the side surface 8c of the housing 8, the first flange portion 16 is locked to the inner flange portion 20 and the elastic member 19 of the second flange portion 18 in the pipe length direction X of the first and second pipe members 4, 6. A first side opening 26 in which the leaf spring 10 is accommodated in the housing 8 is formed in a state in which the flat spring 16 is in contact with the flat surface 16 a of the first flange portion 16.

筐体８における板ばね１０の収容空間２８は、第１内端面２８ａ、第２内端面２８ｂ、及び一対の内側面２８ｃ、２８ｄで囲まれた空間である。第１内端面２８ａは、第１側面開口２６から筐体８内の管径方向（管長方向の直交方向）Ｙに延び、第２端面開口２４が開口されている。また、第２内端面２８ｂは、第１側面開口２６から筐体８内の管径方向Ｙに延び、第１内端面２８ａに対向している。また、一対の内側面２８ｃ、２８ｄは第１及び第２内端面２８ａ、２８ｂから連なって形成されている。また、図７に示すように、筐体８には、第１側面開口２６の対向位置に、収容空間２８に連通する第２側面開口３０が形成されている。   The housing space 28 of the plate spring 10 in the housing 8 is a space surrounded by a first inner end surface 28a, a second inner end surface 28b, and a pair of inner side surfaces 28c and 28d. The first inner end face 28a extends from the first side opening 26 in the pipe radial direction Y (a direction orthogonal to the pipe length direction) Y inside the housing 8, and the second end face opening 24 is opened. The second inner end face 28b extends from the first side opening 26 in the pipe diameter direction Y inside the housing 8, and faces the first inner end face 28a. The pair of inner side surfaces 28c and 28d are formed continuously from the first and second inner end surfaces 28a and 28b. Further, as shown in FIG. 7, a second side opening 30 communicating with the accommodation space 28 is formed in the housing 8 at a position facing the first side opening 26.

また、図８に示すように、一対の内側面２８ｃ、２８ｄには、第１内端面２８ａ側と第２内端面２８ｂ側とで管長方向Ｘにそれぞれ段差部２８ｅが形成されている。各段差部２８ｅにより、第１内端面２８ａの方が第２内端面２８ｂよりも幅方向Ｚの幅が小さくなる。また、筐体８内の板ばね１０の収容空間２８の内フランジ部２０側には、第１及び第２フランジ部１６、１８よりも若干大きな内径を有する円柱状の第１及び第２フランジ部１６、１８の収容空間３２が確保されている。また、収容空間２８の第２端面開口２４側には、収容空間３２と略同内径を有する円柱状のブッシュ１４の収容空間３４が確保されている。   As shown in FIG. 8, step portions 28 e are formed on the pair of inner side surfaces 28 c and 28 d on the first inner end surface 28 a side and the second inner end surface 28 b side in the pipe length direction X, respectively. Due to the steps 28e, the width of the first inner end surface 28a in the width direction Z is smaller than that of the second inner end surface 28b. In addition, on the inner flange portion 20 side of the housing space 28 of the leaf spring 10 in the housing 8, cylindrical first and second flange portions having inner diameters slightly larger than the first and second flange portions 16 and 18 are provided. 16 and 18 accommodation spaces 32 are secured. On the second end face opening 24 side of the accommodation space 28, an accommodation space 34 for the cylindrical bush 14 having substantially the same inner diameter as the accommodation space 32 is secured.

図９に示すように、板ばね１０は、位置決め部１０ａ、押圧部１０ｂ、及び折曲部１０ｃから形成されている。板ばね１０は、収容空間２８に収容され、第２フランジ部１８を第１フランジ部１６に向けて押圧し、第１及び第２管部材４、６の間に後述するシール部３６を形成する。詳しくは、位置決め部１０ａは、第１内端面２８ａに当接され、板ばね１０を収容空間２８内で位置決めする。押圧部１０ｂは、第２内端面２８ｂ側で第２フランジ部１８を押圧する。また、折曲部１０ｃは、位置決め部１０ａ及び押圧部１０ｂから連なり、板ばね１０は、折曲部１０ｃの撓みによって押圧部１０ｂに所定の押圧力を付与する。   As shown in FIG. 9, the leaf spring 10 includes a positioning portion 10a, a pressing portion 10b, and a bent portion 10c. The leaf spring 10 is housed in the housing space 28 and presses the second flange portion 18 toward the first flange portion 16 to form a seal portion 36 described below between the first and second pipe members 4 and 6. . Specifically, the positioning portion 10a is in contact with the first inner end surface 28a, and positions the leaf spring 10 in the housing space 28. The pressing portion 10b presses the second flange portion 18 on the second inner end surface 28b side. The bent portion 10c is continuous with the positioning portion 10a and the pressing portion 10b, and the leaf spring 10 applies a predetermined pressing force to the pressing portion 10b by bending of the bent portion 10c.

位置決め部１０ａ及び押圧部１０ｂには、これらの対向する先端１０ａ１、１０ｂ１を管径方向Ｙに第２管部材６の管径よりも大となる範囲でＵ字状に切り欠いた切り欠き１０ａ２、１０ｂ２がそれぞれ形成されている。
押圧部１０ｂは、その先端１０ｂ１から折曲部１０ｃにかけて、対向する位置決め部１０ａとは反対側に凸に屈曲され、押圧部１０ｂの幅方向に延びる屈曲線１０ｂ３が形成されている。 The positioning portion 10a and the pressing portion 10b have notches 10a2 formed by cutting the opposed tips 10a1 and 10b1 in a U-shape in a range that is larger than the pipe diameter of the second pipe member 6 in the pipe diameter direction Y. 10b2 are formed.
The pressing portion 10b is bent from the front end 10b1 to the bent portion 10c so as to protrude to the opposite side to the opposing positioning portion 10a, and a bending line 10b3 extending in the width direction of the pressing portion 10b is formed.

また、板ばね１０は、本実施形態では、位置決め部１０ａと押圧部１０ｂが管径方向Ｙにほぼ同じ長さに形成されている。
図１０に示すように、板ばね１０は、収容空間２８に収容されたとき、位置決め部１０ａ及び押圧部１０ｂの幅方向Ｚの幅が各段差部２８ｅを補完する形状を有する。即ち、第１内端面２８ａに当接する位置決め部１０ａの方が第２内端面２８ｂ側に位置する押圧部１０ｂよりも幅方向Ｚの幅が小さくなる。 In the present embodiment, the positioning portion 10a and the pressing portion 10b of the leaf spring 10 are formed to have substantially the same length in the pipe diameter direction Y.
As shown in FIG. 10, when the leaf spring 10 is housed in the housing space 28, the positioning portion 10 a and the pressing portion 10 b have a shape in which the width in the width direction Z complements each step portion 28 e. That is, the width of the positioning portion 10a in contact with the first inner end surface 28a is smaller in the width direction Z than the pressing portion 10b located on the second inner end surface 28b side.

図１１に示すように、座金１２は、板ばね１０と第２フランジ部１８との間に設けられるとともに第２管部材６に外嵌され、例えば環状の平板形状をなしている。また、座金１２は、各収容空間３２、３４の内径よりも若干小さな外径（例えば約７ｍｍ）を有している。また、座金１２は、焼き入れ等の硬化処理が施されており、これにより、板ばね１０の装着時、板ばね１０が第２管部材６に傷を付けるのを防止することができる。
図１２に示すように、ブッシュ１４は、一端１４ａが第２端面開口２４に係合されるとともに第２管部材６に外嵌される。また、ブッシュ１４は、各収容空間３２、３４の内径よりも若干小さな外径（例えば約７ｍｍ）を有している。 As shown in FIG. 11, the washer 12 is provided between the leaf spring 10 and the second flange portion 18 and is externally fitted to the second pipe member 6, and has, for example, an annular flat plate shape. The washer 12 has an outer diameter (for example, about 7 mm) slightly smaller than the inner diameter of each of the storage spaces 32 and 34. Further, the washer 12 is subjected to a hardening process such as quenching, so that when the leaf spring 10 is mounted, it is possible to prevent the leaf spring 10 from damaging the second pipe member 6.
As shown in FIG. 12, the bush 14 has one end 14 a engaged with the second end face opening 24 and fitted on the second pipe member 6. Further, the bush 14 has an outer diameter (for example, about 7 mm) slightly smaller than the inner diameter of each of the storage spaces 32 and 34.

以下、図１３から図１８を参照して管継手１の組み立て手順について詳しく説明する。
先ず、図１３に示すように、管継手１の各構成部品を並べて配置する。次に、図１４に示すように第１管部材４を筐体８に挿入する。このとき、筐体８では、第１管部材４を外端４ａから第２端面開口２４を経て第１端面開口２２に挿通することで、第１フランジ部１６が内フランジ部２０に係止される。 Hereinafter, the procedure for assembling the pipe joint 1 will be described in detail with reference to FIGS.
First, as shown in FIG. 13, the components of the pipe joint 1 are arranged side by side. Next, the first pipe member 4 is inserted into the housing 8 as shown in FIG. At this time, in the housing 8, the first flange member 16 is locked to the inner flange portion 20 by inserting the first pipe member 4 from the outer end 4 a to the first end surface opening 22 through the second end surface opening 24. You.

次に、図１５に示すように、座金１２を第２管部材６に外嵌し、第２フランジ部１８に当接させる。次に、図１６に示すように、ブッシュ１４を第２管部材６に外嵌する。
次に、図１７に示すように、第２管部材６を第２フランジ部１８から第２端面開口２４に挿通し、筐体８内で第２フランジ部１８が第１フランジ部１６に突き当てられる。このとき、座金１２は収容空間２８の第２内端面２８ｂ側に位置付けられるとともに、ブッシュ１４の一端１４ａは第２端面開口２４に係合、装着される。 Next, as shown in FIG. 15, the washer 12 is externally fitted to the second pipe member 6 and brought into contact with the second flange portion 18. Next, as shown in FIG. 16, the bush 14 is fitted onto the second pipe member 6.
Next, as shown in FIG. 17, the second pipe member 6 is inserted through the second flange portion 18 into the second end face opening 24, and the second flange portion 18 abuts against the first flange portion 16 in the housing 8. Can be At this time, the washer 12 is positioned on the second inner end surface 28b side of the accommodation space 28, and one end 14a of the bush 14 is engaged with and attached to the second end surface opening 24.

最後に、図１８に示すように、板ばね１０をプライヤー又は専用治具等で押し込むことで、押圧部１０ｂを位置決め部１０ａに近接させる方向に撓ませながら板ばね１０を収容空間２８に収容して筐体８に装着し、管継手１の組み立てが終了する。
図１９に示すように、上述の手順で組み立てて完成した管継手１では、位置決め部１０ａ及び押圧部１０ｂの各切り欠き１０ａ２、１０ｂ２のＵ字状の底が第２管部材６に近接又は当接した状態で、位置決め部１０ａの先端１０ａ１及び押圧部１０ｂの先端１０ｂ１が第２側面開口３０から突出している。 Finally, as shown in FIG. 18, the leaf spring 10 is pushed into the accommodation space 28 by pushing the leaf spring 10 with a plier or a dedicated jig, so that the pressing portion 10b is bent in a direction to approach the positioning portion 10a. To the housing 8 to complete the assembly of the pipe joint 1.
As shown in FIG. 19, in the pipe joint 1 assembled and completed in the above-described procedure, the U-shaped bottoms of the notches 10a2 and 10b2 of the positioning part 10a and the pressing part 10b approach or come close to the second pipe member 6. In the contact state, the tip 10a1 of the positioning portion 10a and the tip 10b1 of the pressing portion 10b protrude from the second side opening 30.

また、座金１２が収容空間２８の第２内端面２８ｂ側に位置付けられるため、板ばね１０の押圧部１０ｂは第１内端面２８ａではなく座金１２、ひいては第２フランジ部１８を確実に押圧し、第１及び第２管部材４、６間にシール部３６が形成される。
そして、図２０に示すように、板ばね１０の押圧部１０ｂが第２フランジ部１８を押圧することにより、弾性部材１９の平坦面１９ｂ３は第１フランジ部１６の平坦面１６ａに面接触し、弾性部材１９が管長方向Ｘに若干潰れることにより、第１及び第２管部材４、６間のシール部３６が環帯状のシール面３８として形成される。 In addition, since the washer 12 is positioned on the second inner end surface 28b side of the accommodation space 28, the pressing portion 10b of the leaf spring 10 surely presses not the first inner end surface 28a but the washer 12, and thus the second flange portion 18, A seal portion 36 is formed between the first and second pipe members 4 and 6.
Then, as shown in FIG. 20, when the pressing portion 10b of the leaf spring 10 presses the second flange portion 18, the flat surface 19b3 of the elastic member 19 comes into surface contact with the flat surface 16a of the first flange portion 16, When the elastic member 19 is slightly crushed in the pipe length direction X, the seal portion 36 between the first and second pipe members 4 and 6 is formed as an annular sealing surface 38.

また、図２１及び図２２に示すように、板ばね１０の押圧部１０ｂに屈曲線１０ｂ３が形成されることにより、座金１２は板ばね１０により２箇所の直線状の押圧線４０により押圧される。こうして、シール部３６のシール面３８における面圧は、板ばね１０の押圧力と弾性部材１９の弾性力とに基づいて決定される。また、弾性部材１９には、板ばね１０の押圧によって弾性変形の範囲で潰れる、即ち、弾性部材１９が弾性限界を超えて塑性変形しない範囲で潰れるように、管長方向Ｘの潰し代が予め確保されている。また、この弾性部材１９の潰し代は、板ばね１０の個体差による押圧力のばらつきを許容可能な管長方向Ｘの幅に設定されている。   Further, as shown in FIGS. 21 and 22, by forming the bending line 10 b 3 in the pressing portion 10 b of the leaf spring 10, the washer 12 is pressed by the plate spring 10 by two linear pressing lines 40. . Thus, the surface pressure of the seal portion 36 at the seal surface 38 is determined based on the pressing force of the leaf spring 10 and the elastic force of the elastic member 19. Further, the elastic member 19 is crushed in the range of elastic deformation by the pressing of the leaf spring 10, that is, a crushing allowance in the pipe length direction X is previously secured so that the elastic member 19 is crushed in a range where the elastic member 19 exceeds the elastic limit and does not undergo plastic deformation. Have been. Further, the crushing allowance of the elastic member 19 is set to a width in the pipe length direction X in which variation in the pressing force due to the individual difference of the leaf spring 10 is allowable.

以上のように本実施形態によれば、施工性及びシール性の双方に優れ、小型の製造装置への使用に好適であり、生産性及び信頼性の高い管継手１、この管継手１を用いた流体制御機器、及びこの流体制御機器を用いた流体制御装置を提供することができる。
具体的には、筐体８の側面８ｃに第１側面開口２６が形成されることにより、第１フランジ部１６が内フランジ部２０に係止され且つ第１及び第２管部材４、６の管長方向に第２フランジ部１８が第１フランジ部１６に当接した状態で、板ばね１０が筐体８内に収容される。これにより、小型装置内の施工スペースが狭い場合、スパナ等の回転工具を用いなくとも、板ばね１０を筐体８に収容、装着するだけの簡単な作業で、管継手１における第１及び第２管部材４、６間のシール部３６を形成することができ、管継手１の結合に係る施工性を大幅に高めることができる。 As described above, according to the present embodiment, the pipe joint 1 is excellent in both workability and sealability, is suitable for use in a small-sized manufacturing apparatus, and has high productivity and high reliability. Fluid control device, and a fluid control device using the fluid control device.
Specifically, by forming the first side opening 26 in the side surface 8 c of the housing 8, the first flange portion 16 is locked by the inner flange portion 20 and the first and second pipe members 4, 6 are closed. The leaf spring 10 is housed in the housing 8 in a state where the second flange portion 18 is in contact with the first flange portion 16 in the pipe length direction. Accordingly, when the construction space in the small device is narrow, the first and second joints in the pipe joint 1 can be performed simply by accommodating and mounting the leaf spring 10 in the housing 8 without using a rotating tool such as a spanner. The seal portion 36 between the two pipe members 4 and 6 can be formed, and the workability related to the connection of the pipe joint 1 can be greatly improved.

しかも、第２フランジ部１８に凸設した弾性部材１９を第１フランジ部１６に面接触させたシール面３８によりシール部３６を形成することができるため、例えば、金属製の第１及び第２フランジ部１６、１８同士を線接触して環状のシール線によりシール部３６を形成する場合に比して、シール部３６のシール性を向上することができる。また、管継手１の組立時やメンテナンス時に、別部材としたＯリングやガスケット等の極小のシール部材が紛失する懸念が排除される。   In addition, since the sealing portion 36 can be formed by the sealing surface 38 in which the elastic member 19 projecting from the second flange portion 18 is brought into surface contact with the first flange portion 16, for example, the first and second metal members are formed. The sealability of the seal portion 36 can be improved as compared with a case where the flange portions 16 and 18 are in line contact with each other and the seal portion 36 is formed by an annular seal line. Further, at the time of assembling the pipe joint 1 or at the time of maintenance, it is possible to eliminate a concern that a very small seal member such as an O-ring or a gasket which is a separate member is lost.

また、弾性部材１９でシール面３８を形成したことにより、装置のメンテナンス等により管継手１を分解し、装置に対し繰り返し脱着したとしても、第１及び第２フランジ部１６、１８同士の接触箇所に傷が生じるようなことはなく、管継手１のシール性を高く維持することができる。   Further, since the sealing surface 38 is formed by the elastic member 19, even if the pipe joint 1 is disassembled for maintenance of the device and is repeatedly attached to and detached from the device, the contact portion between the first and second flange portions 16 and 18 is formed. No damage is caused to the pipe joint 1, and the sealing performance of the pipe joint 1 can be maintained high.

また、弾性部材１９に、板ばね１０の押圧によって弾性変形の範囲で潰れる潰し代が確保されていることにより、弾性部材１９の塑性変形が防止され、弾性部材１９のいわゆるヘタリによる管継手１のシール性低下を抑制することができる。
また、弾性部材１９の潰し代は、板ばね１０の個体差による押圧力のばらつきを許容可能な幅に設定されていることにより、板ばね１０の押圧力がばらついたとしても、板ばね１０の押圧による弾性部材１９の塑性変形が回避され、板ばね１０の押圧力と弾性部材１９の弾性力との合力により管継手１のシール性を常時維持することができる。 In addition, since the elastic member 19 is provided with a crushing allowance in which the elastic member 19 is crushed within a range of elastic deformation by the pressing of the leaf spring 10, plastic deformation of the elastic member 19 is prevented, and the elastic member 19 can be connected to the pipe joint 1 by so-called hetari. A reduction in sealing performance can be suppressed.
Further, the crushing allowance of the elastic member 19 is set to a width in which the variation of the pressing force due to the individual difference of the leaf spring 10 is allowed, so that the pressing force of the leaf spring 10 The plastic deformation of the elastic member 19 due to the pressing is avoided, and the sealing property of the pipe joint 1 can be constantly maintained by the combined force of the pressing force of the leaf spring 10 and the elastic force of the elastic member 19.

また、板ばね１０による押圧力がさほど大きくない場合であっても、板ばね１０の押圧力と弾性部材１９の弾性力との合力によりシール部３６のシール力を高めることができ、管継手１のシール性を効果的に高めることができる。従って、管継手１のシール性を確保するために、安全率を掛けた大きな値に板ばね１０の弾性力を設定する必要はないため、筐体８に対する板ばね１０の取り付け作業を容易に行うことができる。   Further, even when the pressing force by the leaf spring 10 is not so large, the sealing force of the seal portion 36 can be increased by the combined force of the pressing force of the leaf spring 10 and the elastic force of the elastic member 19, and the pipe joint 1 Can be effectively improved in sealing performance. Therefore, it is not necessary to set the elastic force of the leaf spring 10 to a large value multiplied by the safety factor in order to secure the sealing performance of the pipe joint 1, so that the work of attaching the leaf spring 10 to the housing 8 is easily performed. be able to.

また、管継手１を繰り返し脱着したとき、板ばね１０のヘタリが発生し、板ばね１０から所望の押圧力を得ることができなくなったとしても、弾性部材１９の弾性力で補うことにより、管継手１の必要締め付け荷重を維持することが可能である。
また、板ばね１０の押圧部１０ｂに屈曲線１０ｂ３が形成されることにより、座金１２は板ばね１０により２箇所の直線状の押圧線４０により押圧される。これにより、板ばね１０により座金１２の中央部分を確実に押圧可能となるため、板ばね１０による押圧力によってシール部３６におけるシール力、ひいては管継手１におけるシール性を更に効果的に高めることができる。 Further, when the pipe joint 1 is repeatedly attached and detached, even if the leaf spring 10 is severed and a desired pressing force cannot be obtained from the leaf spring 10, the pipe spring is supplemented by the elastic force of the elastic member 19. The required tightening load of the joint 1 can be maintained.
Further, since the bending line 10 b 3 is formed in the pressing portion 10 b of the leaf spring 10, the washer 12 is pressed by the plate spring 10 by two linear pressing lines 40. As a result, the central portion of the washer 12 can be reliably pressed by the leaf spring 10, so that the pressing force of the leaf spring 10 more effectively enhances the sealing force in the seal portion 36 and, consequently, the sealing performance in the pipe joint 1. it can.

また、筐体８には、第１側面開口２６の対向位置に、収容空間２８に連通する第２側面開口３０が形成され、位置決め部１０ａ及び押圧部１０ｂの各切り欠き１０ａ２、１０ｂ２のＵ字状の底が第２管部材６に近接又は当接した状態で、位置決め部１０ａの先端１０ａ１及び押圧部１０ｂの先端１０ｂ１が第２側面開口３０から突出している。これにより、第２側面開口３０から突出した位置決め部１０ａの先端１０ａ１及び／又は押圧部１０ｂの先端１０ｂ１を押すことで、板ばね１０を筐体８から容易に取り外すことができる。従って、板ばね１０の交換や管継手１の分解等を容易に行うことができ、管継手１のメンテナンス性を高めることができる。   Further, a second side opening 30 communicating with the accommodation space 28 is formed in the housing 8 at a position facing the first side opening 26, and the U-shaped cutouts 10a2 and 10b2 of the positioning portion 10a and the pressing portion 10b are formed. The tip 10a1 of the positioning portion 10a and the tip 10b1 of the pressing portion 10b protrude from the second side opening 30 with the bottom of the shape approaching or abutting the second pipe member 6. Thus, the leaf spring 10 can be easily removed from the housing 8 by pressing the tip 10a1 of the positioning portion 10a and / or the tip 10b1 of the pressing portion 10b protruding from the second side opening 30. Therefore, replacement of the leaf spring 10 and disassembly of the pipe joint 1 can be easily performed, and the maintenance property of the pipe joint 1 can be improved.

また、筐体８における板ばね１０の収容空間２８の内側面２８ｃ、２８ｄに段差部２８ｅが形成され、板ばね１０は、収容空間２８に収容されたとき、位置決め部１０ａ及び押圧部１０ｂの幅方向Ｚの幅が各段差部２８ｅを補完する形状を有する。これにより、第１内端面２８ａに押圧部１０ｂを当接させて装着するといった筐体８の収容空間２８に対する板ばね１０の誤組み付けを防止することができる。従って、板ばね１０による座金１２の押圧を確実に線接触で行うことができ、当該誤組み付けに起因した管継手１におけるシール性低下を防止することができる。   In addition, steps 28e are formed on the inner surfaces 28c and 28d of the housing space 28 of the leaf spring 10 in the housing 8, and when the leaf spring 10 is housed in the housing space 28, the width of the positioning portion 10a and the width of the pressing portion 10b are increased. The width in the direction Z has a shape that complements each step 28e. Thus, it is possible to prevent the leaf spring 10 from being erroneously assembled to the housing space 28 of the housing 8 such that the pressing portion 10b is brought into contact with the first inner end surface 28a and mounted. Therefore, it is possible to reliably press the washer 12 by the leaf spring 10 by line contact, and it is possible to prevent a decrease in the sealing performance of the pipe joint 1 due to the erroneous assembly.

以上で本発明の一実施形態についての説明を終えるが、本発明はこれに限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々の変更ができるものである。
例えば、上記実施形態では、第１フランジ部１６に平坦面１６ａを形成し、第２フランジ部１８に弾性部材１９の平坦面１９ｂ３を形成している。しかし、これに限らず、シール面３８が形成されれば良く、例えば、第１フランジ部１６に弾性部材１９を設け、第２フランジ部１８に平坦面を形成しても良い。 The description of one embodiment of the present invention is finished above, but the present invention is not limited to this, and various changes can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the flat surface 16 a is formed on the first flange portion 16, and the flat surface 19 b 3 of the elastic member 19 is formed on the second flange portion 18. However, the present invention is not limited thereto, and the seal surface 38 may be formed. For example, the elastic member 19 may be provided on the first flange 16 and the flat surface may be formed on the second flange 18.

また、シール面３８を形成可能であれば、弾性部材１９の形状、材質、及び装着手法は上記実施形態に限定されない。
また、上記実施形態では、板ばね１０の位置決め部１０ａの先端１０ａ１及び押圧部１０ｂの先端１０ｂ１の双方が第２側面開口３０から突出している。しかし、これに限らず、先端１０ａ１、１０ｂ１の少なくとも何れか一方を第２側面開口３０から突出させても良い。 Further, as long as the sealing surface 38 can be formed, the shape, material, and mounting method of the elastic member 19 are not limited to the above embodiment.
In the above embodiment, both the tip 10a1 of the positioning portion 10a of the leaf spring 10 and the tip 10b1 of the pressing portion 10b protrude from the second side opening 30. However, the present invention is not limited to this, and at least one of the tips 10a1 and 10b1 may project from the second side opening 30.

また、筐体８の第１及び第２側面開口２６、３０からの板ばね１０の抜け防止のため、図示しない抜け止めクリップを設けても良い。
また、筐体８、板ばね１０は、上記実施形態の形状に限られないし、座金１２やブッシュ１４を備えない管継手１にも適用可能である。
また、管継手１を弁に接続した流体制御機器は、種々の流体回路を構成する流体制御装置に適用可能であり、流体制御機器を用いた流体制御装置は種々の小型の製造装置に適用可能である。 Further, in order to prevent the leaf spring 10 from coming off from the first and second side openings 26 and 30 of the housing 8, a retaining clip (not shown) may be provided.
Further, the housing 8 and the leaf spring 10 are not limited to the shapes of the above embodiment, and can be applied to the pipe joint 1 without the washer 12 or the bush 14.
Further, a fluid control device in which the pipe joint 1 is connected to a valve is applicable to a fluid control device constituting various fluid circuits, and a fluid control device using the fluid control device is applicable to various small manufacturing devices. It is.

１ 管継手
４ 第１管部材
４ａ 外端（他端）
４ｂ 内端（一端）
６ 第２管部材
６ａ 外端（他端）
８ 筐体
８ａ 一端
１０ 板ばね
１６ 第１フランジ部
１８ 第２フランジ部
１９ 弾性部材
２０ 内フランジ部
２２ 第１端面開口
２４ 第２端面開口
２６ 第１側面開口
３６ シール部 DESCRIPTION OF SYMBOLS 1 Pipe joint 4 1st pipe member 4a Outer end (other end)
4b Inner end (one end)
6 Second pipe member 6a Outer end (other end)
Reference Signs List 8 housing 8a one end 10 leaf spring 16 first flange portion 18 second flange portion 19 elastic member 20 inner flange portion 22 first end face opening 24 second end face opening 26 first side face opening 36 seal part

Claims (5)

一端に第１フランジ部を有する第１管部材と、
一端に第２フランジ部を有する第２管部材と、
一端に内周が縮径されてなる内フランジ部及び該内フランジ部よりなる第１端面開口を有するとともに、他端に第２端面開口を有する筐体と、
前記筐体内に収容され、前記第２フランジ部を前記第１フランジ部に向けて押圧する板ばねと
を備え、
前記筐体は、
前記第１フランジ部が内フランジ部に係止され且つ前記第１及び第２管部材の管長方向に前記第２フランジ部が前記第１フランジ部に当接した状態で、前記板ばねが前記筐体内に収容される第１側面開口と、
前記板ばねの収容空間と、
前記第１側面開口の対向位置において前記収容空間に連通する第２側面開口と
を有し、
前記板ばねは、
前記板ばねを前記収容空間内で位置決めするための位置決め部と、
前記位置決め部に対向し、前記第２フランジ部を押圧する押圧部と、
前記位置決め部及び前記押圧部から連なり、前記押圧部に押圧力を付与する折曲部と
を含み、
前記第１管部材をその他端から前記第２端面開口を経て前記第１端面開口に挿通することで、前記第１フランジ部が内フランジ部に係止され、前記第２端面開口に前記第２フランジ部から前記第２管部材を挿通し、前記板ばねを前記第１側面開口から前記収容空間に押し込み、前記押圧部を前記位置決め部に近接させる方向に撓ませながら前記収容空間に収容することにより、前記第２フランジ部が前記第１フランジ部に向けて押圧されて前記筐体内で前記第２フランジ部と前記第１フランジ部とがシール部を形成し、
前記シール部は、前記第１及び第２フランジ部の一方に凸設した環状の弾性部材が前記第１及び第２フランジ部の他方に面接触してなる、管継手。 A first pipe member having a first flange portion at one end;
A second pipe member having a second flange portion at one end;
A housing having an inner flange portion having an inner periphery reduced in diameter at one end and a first end surface opening formed of the inner flange portion, and having a second end surface opening at the other end;
A leaf spring housed in the housing and pressing the second flange portion toward the first flange portion,
The housing is
In a state where the first flange portion is locked to the inner flange portion and the second flange portion is in contact with the first flange portion in the pipe length direction of the first and second pipe members, the leaf spring is connected to the housing. A first side opening housed in the body ,
An accommodation space for the leaf spring,
A second side opening communicating with the housing space at a position facing the first side opening ;
The leaf spring,
A positioning unit for positioning the leaf spring in the housing space;
A pressing portion that faces the positioning portion and presses the second flange portion;
A bending portion which is continuous with the positioning portion and the pressing portion and applies a pressing force to the pressing portion;
Including
By inserting the first pipe member from the other end into the first end opening through the second end opening, the first flange portion is locked to the inner flange portion, and the second flange is inserted into the second end surface opening. Inserting the second pipe member from the flange portion , pushing the leaf spring from the first side opening into the accommodation space, and accommodating the pressing portion in the accommodation space while bending the pressing portion in a direction to approach the positioning portion. Thereby, the second flange portion is pressed toward the first flange portion, and the second flange portion and the first flange portion form a seal portion in the housing,
The pipe joint, wherein the seal portion includes an annular elastic member protruding from one of the first and second flange portions in surface contact with the other of the first and second flange portions. 前記弾性部材は、前記板ばねの押圧によって弾性変形の範囲で潰れる潰し代を有する、請求項１に記載の管継手。   2. The pipe joint according to claim 1, wherein the elastic member has a squeezing allowance in a range of elastic deformation by pressing of the leaf spring. 3. 前記潰し代は、前記板ばねの個体差による押圧力のばらつきを許容可能な幅に設定されている、請求項２に記載の管継手。   The pipe joint according to claim 2, wherein the crushing allowance is set to a width that allows variation in the pressing force due to individual differences of the leaf springs. 請求項１から３の何れか一項に記載の管継手を備えた流体制御機器であって、
流体の入口及び出口を有し、前記入口及び出口の少なくとも何れか一方に前記第１及び第２管部材の少なくとも何れか一方の他端が接続された弁を含む、流体制御機器。 It is a fluid control apparatus provided with the pipe joint according to any one of claims 1 to 3,
A fluid control device, comprising: a valve having a fluid inlet and an outlet, and a valve having at least one of the inlet and the outlet connected to the other end of at least one of the first and second pipe members. 請求項４に記載の流体制御機器を備えた、流体制御装置。   A fluid control device comprising the fluid control device according to claim 4.
JP2015151800A 2015-07-31 2015-07-31 Pipe fitting, fluid control device, and fluid control device Active JP6649004B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015151800A JP6649004B2 (en) 2015-07-31 2015-07-31 Pipe fitting, fluid control device, and fluid control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015151800A JP6649004B2 (en) 2015-07-31 2015-07-31 Pipe fitting, fluid control device, and fluid control device

Publications (2)

Publication Number Publication Date
JP2017032048A JP2017032048A (en) 2017-02-09
JP6649004B2 true JP6649004B2 (en) 2020-02-19

Family

ID=57988334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015151800A Active JP6649004B2 (en) 2015-07-31 2015-07-31 Pipe fitting, fluid control device, and fluid control device

Country Status (1)

Country Link
JP (1) JP6649004B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110325461B (en) 2017-02-23 2021-04-13 村田机械株式会社 Stocker and method for forming work scaffold

Also Published As

Publication number Publication date
JP2017032048A (en) 2017-02-09

Similar Documents

Publication Publication Date Title
WO2016052223A1 (en) Resin-made tube joint
CN107588256B (en) Plastic sealing fitting
WO2016052222A1 (en) Resin-made tube joint
WO2015050052A1 (en) Synthetic resin tube joint
JP6956773B2 (en) Metal seal fitting assembly using abrupt bending technology and its manufacturing method
EP2902686B1 (en) Tube fitting
JP5895330B2 (en) Sealing structure for high pressure pipe joints
GB2508405A (en) Vacuum pump sealing system
JP5213636B2 (en) Seal device for joint and fluid joint having the same
JP6549886B2 (en) Weld-free flange fitting
US20190293179A1 (en) Seal structure, sealing method, and coupling equipped with said seal structure
US20080290658A1 (en) Fitting Structure
WO2013153774A1 (en) Metal gasket
JP5923578B2 (en) Resin pipe fittings
JP6649004B2 (en) Pipe fitting, fluid control device, and fluid control device
US20070013189A1 (en) Sealing fitting for stainless steel tubing
EP3425249A2 (en) Press-connect fitting with membrane seal
JP5923579B2 (en) Resin pipe fittings
JP6424124B2 (en) Metal seal
US20070001455A1 (en) Fluid connector
JP4740219B2 (en) Pipe connection structure
US12018786B2 (en) Two-part coupling
KR200292901Y1 (en) One touch fitting for hose connection
CN110748727A (en) Universal threadless connection
JP2019157910A (en) Pipe connection structure

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180706

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20190722

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20190724

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20190829

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20191218

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20200116

R150 Certificate of patent or registration of utility model

Ref document number: 6649004

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250