JP6591738B2 - Flange separation prevention device - Google Patents

Flange separation prevention device Download PDF

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JP6591738B2
JP6591738B2 JP2014181152A JP2014181152A JP6591738B2 JP 6591738 B2 JP6591738 B2 JP 6591738B2 JP 2014181152 A JP2014181152 A JP 2014181152A JP 2014181152 A JP2014181152 A JP 2014181152A JP 6591738 B2 JP6591738 B2 JP 6591738B2
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advancing
flange
advance
retreat
separation preventing
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星野 洋一郎
洋一郎 星野
悟 武田
悟 武田
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Cosmo Koki Co Ltd
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Description

本発明は、対向した一対のフランジの離間を防止するフランジ離間防止装置に関する。   The present invention relates to a flange separation preventing device for preventing separation between a pair of opposed flanges.

従来、補強治具(基底部)の両端に立設される脚部(壁部)を有するフランジ接合体(挟持部材)と、前記フランジ接合体(挟持部材)に進退可能に設けられるボルト(押圧部材)と、を備え、前記フランジの外周面が前記補強治具(基底部)の内底面に対向するように前記脚部(壁部)の間に配置して、フランジの離間を防止するフランジ離間防止装置が知られている(例えば、特許文献1参照)。また、一対のアーム(基底部)の端部に立設された屈曲部に設けられた当接プレート(壁部)の間でフランジを挟持し前記フランジの離間を防止しているものもある(特許文献2参照)。   Conventionally, a flange joined body (clamping member) having legs (walls) standing on both ends of a reinforcing jig (base part), and a bolt (pressing) provided on the flange joined body (clamping member) so as to be able to advance and retract And a flange that is disposed between the leg portions (wall portions) so that the outer peripheral surface of the flange faces the inner bottom surface of the reinforcing jig (base portion), and prevents the flange from separating. A separation prevention device is known (see, for example, Patent Document 1). In addition, there is also a type in which a flange is sandwiched between contact plates (wall portions) provided at bent portions standing at the ends of a pair of arms (base portions) to prevent the flanges from being separated ( Patent Document 2).

特開2005−147243号公報(第4頁、図1−図3)Japanese Patent Laying-Open No. 2005-147243 (Page 4, FIGS. 1 to 3) 特開平11−225001号公報(第4頁、図4−図5)JP-A-11-22501 (4th page, FIG. 4 to FIG. 5)

しかしながら、特許文献1のフランジ離間防止装置を、例えばT字管や弁等の管接続部材のフランジに適用した場合、フランジ接合体に取付けられるボルトは、T字管の隣接する他のフランジとの距離が近くなり、ボルトを締めるための工具あるいはボルト自体が他のフランジと干渉して、適切なボルトの締付け作業が困難となり、フランジ離間防止装置の取付け作業に多大な時間を要し、工事期間が長くなるという問題がある。また、特許文献2においても、摘み部とフランジとの距離が近く、摘み部とフランジとが干渉して、適切に当接プレートをフランジに当接させることができない問題がある。   However, when the flange separation preventing device of Patent Document 1 is applied to, for example, a flange of a pipe connection member such as a T-shaped tube or a valve, a bolt attached to the flange joined body is connected to another flange adjacent to the T-shaped tube. The distance between the bolts and the bolt tightening tool or the bolt itself interferes with other flanges, making it difficult to tighten the bolts properly. There is a problem that becomes longer. Also in Patent Document 2, there is a problem that the distance between the knob and the flange is close, and the knob and the flange interfere with each other so that the contact plate cannot be brought into contact with the flange appropriately.

本発明は、このような問題点に着目してなされたもので、フランジ及びこの周囲の構造体と干渉することのないフランジ離間防止装置を提供することを目的とする。   The present invention has been made paying attention to such a problem, and an object of the present invention is to provide a flange separation preventing device that does not interfere with the flange and the surrounding structure.

前記課題を解決するために、本発明のフランジ離間防止装置は、
基底部の両側に立設される壁部を有する一対のフランジを挟持する挟持部材を備え、前記基底部の内底面が前記一対のフランジの外周面に対向するように配置され、前記一対のフランジが離間することを防止するフランジ離間防止装置であって、
少なくとも前記挟持部材の一方の壁部側には、回動部材と、該回動部材の回動により進退を伴う進退部材と、前記進退部材の進退方向と異なる方向に変位を生成する方向変換部材と、を備えることを特徴としている。
この特徴によれば、フランジ離間防止装置は、方向変換部材によって、回動部材の回動により進退する進退部材の進退方向と異なる方向に変位を生成して、挟持部材の壁部の間にフランジを挟持するので、フランジ離間防止装置はフランジ及びこの周囲の構造体と干渉することなく、フランジの離間を防止することができる。
In order to solve the above-described problem, the flange separation preventing device of the present invention includes:
A holding member for holding a pair of flanges having wall portions standing on both sides of the base portion, the inner bottom surface of the base portion being disposed so as to face the outer peripheral surfaces of the pair of flanges, and the pair of flanges; Is a flange separation preventing device that prevents separation of the flange,
At least on one wall side of the clamping member, a rotating member, an advancing / retreating member that moves forward / backward by the rotation of the rotating member, and a direction changing member that generates a displacement in a direction different from the advancing / retreating direction of the advancing / retreating member. It is characterized by providing these.
According to this feature, the flange separation preventing device generates a displacement in a direction different from the advancing / retreating direction of the advancing / retreating member that is advanced / retracted by the rotation of the rotating member by the direction changing member, and the flange between the wall portions of the clamping member Therefore, the flange separation preventing device can prevent the flange from separating without interfering with the flange and the surrounding structure.

本発明のフランジ離間防止装置は、
前記回動部材と前記進退部材とは螺合関係にあり、前記回動部材は前記挟持部材に対して進退移動を規制され、かつ前記進退部材は前記挟持部材に対して回動が規制されることを特徴としている。
この特徴によれば、回動部材は挟持部材に対する進退移動を規制されているので、回動部材の回動によって回動部材は進退することなく、該回動部材と螺合関係にある進退部材を進退させるので、フランジ離間防止装置はフランジ及びこの周囲の構造体と干渉することなく、効率よくフランジの離間を防止することができる。
The flange separation preventing device of the present invention is
The rotating member and the advancing / retracting member are in a screwed relationship, the rotating member is restricted from advancing / retreating relative to the clamping member, and the advancing / retreating member is restricted from rotating relative to the clamping member. It is characterized by that.
According to this feature, since the turning member is restricted from moving back and forth with respect to the holding member, the turning member does not move forward and backward due to the turning of the turning member, and the advancing and retracting member is in a screwed relationship with the turning member. Therefore, the flange separation preventing device can efficiently prevent the flange from separating without interfering with the flange and the surrounding structure.

本発明のフランジ離間防止装置は、
前記進退部材は前記方向変換部材に対し回動が規制されることを特徴としている。
この特徴によれば、進退部材は方向変換部材に対し回転が規制されているので、進退部材は回転することなく進退して、方向変換部材を変位させるので、効率よくフランジの離間を防止することができる。
The flange separation preventing device of the present invention is
The advance / retreat member is characterized in that its rotation with respect to the direction changing member is restricted.
According to this feature, since the rotation of the advance / retreat member is restricted with respect to the direction changing member, the advance / retreat member moves forward / backward without rotating and displaces the direction change member, thereby efficiently preventing the flange from separating. Can do.

本発明のフランジ離間防止装置は、
前記方向変換部材は、前記進退部材の進退方向に対し傾斜する傾斜受圧面を有することを特徴としている。
この特徴によれば、方向変換部材は、進退部材の進退方向に対し傾斜する傾斜受圧面を利用して、効率よく進退部材の進退方向と異なる方向に変位を生成することができる。
The flange separation preventing device of the present invention is
The direction changing member has an inclined pressure receiving surface that is inclined with respect to the advance / retreat direction of the advance / retreat member.
According to this feature, the direction changing member can efficiently generate a displacement in a direction different from the advancing / retreating direction of the advancing / retreating member using the inclined pressure receiving surface that is inclined with respect to the advancing / retreating direction of the advancing / retreating member.

本発明のフランジ離間防止装置は、
前記方向変換部材は、複数の部材からなり、各部材は少なくとも一つの傾斜受圧面で当接することを特徴としている。
この特徴によれば、方向変換部材は、複数の部材の傾斜受圧面を利用して、効率よく進退部材の進退方向と異なる方向に変位を生成することができる。
The flange separation preventing device of the present invention is
The direction changing member includes a plurality of members, and each member abuts on at least one inclined pressure receiving surface.
According to this feature, the direction changing member can efficiently generate displacement in a direction different from the advancing / retreating direction of the advancing / retreating member using the inclined pressure receiving surfaces of the plurality of members.

本発明のフランジ離間防止装置は、
前記方向変換部材は、前記進退部材の進退移動により転動する転動部材であることを特徴としている。
この特徴によれば、方向変換部材は、進退部材の進退により転動される転動部材を利用して、効率よく進退部材の進退方向と異なる方向に変位を生成することができる。
The flange separation preventing device of the present invention is
The direction changing member is a rolling member that rolls by advancing and retreating of the advancing and retracting member.
According to this feature, the direction changing member can efficiently generate a displacement in a direction different from the advancing / retreating direction of the advancing / retreating member by using the rolling member that is rolled by the advance / retreat of the advancing / retreating member.

(a)は、実施例1に係るフランジ離間防止装置の正面図、(b)は一部側断面図である。(A) is a front view of the flange separation prevention apparatus which concerns on Example 1, (b) is a partial sectional side view. 図1のJ−J矢視図である。It is the JJ arrow line view of FIG. 図1の点線囲い部Kのフランジ離間防止装置の詳細図である。FIG. 2 is a detailed view of a flange separation preventing device for a dotted line enclosure K in FIG. 1. 図3のA−A矢視図である。It is an AA arrow line view of FIG. (a)は図4のフランジ離間防止装置の進退部材を進入させた状態を示す一部側断面図、(b)は(a)のB−B矢視図である。(A) is a partial sectional side view which shows the state which made the advance / retreat member of the flange separation | spacing prevention apparatus of FIG. 4 approach, (b) is a BB arrow line view of (a). 点線囲い部Mは、フランジ離間防止装置の取付け状況を示す図であり、点線囲い部Nは、従来のフランジ離間防止装置の取付け状況を示す図である。A dotted line enclosing portion M is a diagram showing an attachment state of the flange separation preventing device, and a dotted line enclosing portion N is a diagram showing an attachment state of the conventional flange separation preventing device. (a)は方向変換部材の変形例を示す図、(b)は(a)の進退部材を進入させた状態を示す一部側断面図である。(A) is a figure which shows the modification of a direction change member, (b) is a partial sectional side view which shows the state which made the advance / retreat member of (a) approach. 回動部材の進退移動規制手段の変形例を示す図である。It is a figure which shows the modification of the advance / retreat movement control means of a rotation member. (a)は図8のC−C矢視図、(b)は(a)の進退部材を進入させた状態を示す一部側断面図、(c)は(a)のD−D矢視図である。(A) is a CC arrow view of FIG. 8, (b) is a partial side sectional view showing a state in which the advance / retreat member of (a) is entered, and (c) is a DD arrow view of (a). FIG. (a)は図9の方向変換部材の変形例を示す図、(b)は(a)の進退部材を進入させた状態を示す一部側断面図である。(A) is a figure which shows the modification of the direction change member of FIG. 9, (b) is a partial sectional side view which shows the state which made the advance / retreat member of (a) approach. 回動部材の進退移動規制手段の別の変形例を示す図である。It is a figure which shows another modification of the advance / retreat movement control means of a rotation member. (a)は図11のE−E矢視図、(b)は(a)の進退部材を進入させた状態を示す一部側断面図、(c)は(a)のF−F矢視図である。(A) is an EE arrow view of FIG. 11, (b) is a partial side sectional view showing a state in which the advance / retreat member of (a) is entered, and (c) is an FF arrow view of (a). FIG. (a)はフランジ離間防止装置のさらなる変形例の一部側断面、(b)は(a)の進退部材を進入させた状態を示す一部側断面図、(c)は(a)のG−G矢視図である。(A) is a partial sectional side view of a further modification of the flange separation preventing device, (b) is a partial sectional side view showing a state in which the advancing / retracting member of (a) is entered, and (c) is a G of (a). FIG. はフランジ離間防止装置のフランジ押圧面を介在体により保護、絶縁した一部側断面図である。FIG. 5 is a partial side sectional view in which the flange pressing surface of the flange separation preventing device is protected and insulated by an interposition. はフランジ離間防止装置の実施例2の一部側断面図である。These are partial sectional side views of Example 2 of the flange separation preventing device.

本発明に係るフランジ離間防止装置を図1から図15を参照して説明する。   A flange separation preventing device according to the present invention will be described with reference to FIGS.

以下に述べる流体管1、割T字管3、流体弁4は、管網を構成する配管の一部であって、地中に埋設される上水道用のダクタイル鋳鉄製であり、管の内周面がモルタル層で被覆されている。尚、本発明に係る流体管は、その他鋳鉄、鋼等の金属製、あるいは石綿、コンクリート製、塩化ビニール、ポリエチレン若しくはポリオレフィン製等であってもよい。更に、流体管の内周面はモルタル層に限らず、例えばエポキシ樹脂等により被覆されてもよく、若しくは適宜の材料を粉体塗装により流体管の内周面に被覆してもよい。また、本実施例では流体管内の流体は、本実施例の上水に限らず、例えば工業用水や農業用水、下水等の他、ガスやガスと液体との気液混合体であっても構わない。   The fluid pipe 1, the split T-shaped pipe 3, and the fluid valve 4 described below are part of piping constituting the pipe network, and are made of ductile cast iron for waterworks buried in the ground. The surface is covered with a mortar layer. The fluid pipe according to the present invention may be made of other metals such as cast iron and steel, or made of asbestos, concrete, vinyl chloride, polyethylene, or polyolefin. Furthermore, the inner peripheral surface of the fluid pipe is not limited to the mortar layer, and may be coated with, for example, an epoxy resin or the like, or an appropriate material may be coated on the inner peripheral surface of the fluid pipe with powder coating. In the present embodiment, the fluid in the fluid pipe is not limited to the clean water of the present embodiment, but may be, for example, industrial water, agricultural water, sewage, etc., or a gas-liquid mixture of gas and gas and liquid. Absent.

図1(a)、(b)に示されるように、流体管1の分岐部において水密に取付けられた分岐部材2は、流体管1から略直交に分岐された流体管路を構成している。分岐部材2は、流体管1の外周面に取付けられる割T字管3と、割T字管3に取付けられた流体弁4と、から成る。   As shown in FIGS. 1A and 1B, the branching member 2 attached in a watertight manner at the branching portion of the fluid pipe 1 constitutes a fluid pipe branched from the fluid pipe 1 substantially orthogonally. . The branching member 2 includes a split T-shaped tube 3 attached to the outer peripheral surface of the fluid pipe 1 and a fluid valve 4 attached to the split T-shaped tube 3.

割T字管3は、流体管1を周方向に亘って被覆する2分割構造の部材であって、流体管1の外周面を略半周に亘って水密に被覆する被覆板3aと、この被覆板3aにボルト・ナット5で接続され流体管1の残り略半周に亘って水密に被覆するとともに、流体管1からの分岐方向に開口する受口部3cを有する本体3bと、から構成されている。また割T字管3における流体管1軸方向両側には、割T字管3の内面と流体管1の外面とをシールする二分割構造の離脱防止押輪6、6が装着されている。   The split T-shaped tube 3 is a member having a two-divided structure that covers the fluid pipe 1 in the circumferential direction, and a covering plate 3a that covers the outer peripheral surface of the fluid pipe 1 in a water-tight manner over a substantially half circumference, and this covering The body 3b is connected to the plate 3a with bolts and nuts 5 and is water-tightly covered over the remaining substantially half circumference of the fluid pipe 1 and has a receiving portion 3c that opens in a branching direction from the fluid pipe 1. Yes. Further, on the both sides in the axial direction of the fluid tube 1 in the split T-shaped tube 3, separation preventing push wheels 6, 6 having a two-part structure for sealing the inner surface of the split T-shaped tube 3 and the outer surface of the fluid tube 1 are mounted.

流体弁4は、弁軸4bを回動することにより分岐部材2の流路を開閉する弁体(図示せず)を有している。また、受口部3cと流体弁4には、互いに対向するフランジ3d、4dをそれぞれ有しており、該フランジ3d、4dはシール材を介して、それぞれのフランジ3d、4dの周面に形成されたボルト孔に挿通されたボルト・ナット7によって、締付け固定されている。   The fluid valve 4 has a valve body (not shown) that opens and closes the flow path of the branch member 2 by rotating the valve shaft 4b. The receiving port 3c and the fluid valve 4 have flanges 3d and 4d that face each other, and the flanges 3d and 4d are formed on the peripheral surfaces of the flanges 3d and 4d through a sealing material. The bolts and nuts 7 inserted through the bolt holes are fastened and fixed.

流体管1、割T字管3、流体弁4は、地中に埋設される管網を構成する配管の一部であり、地震などによる外力又は経年変化によりフランジ3d、4d間の密封性が低下する場合がある。このように、フランジ3d、4d間の密封性の低下を防止するため、図1及び図2に示されるように、フランジ3d、4dにはフランジ離間防止装置10が一対のフランジ3d、4dにおいて周方向に隣接するボルト・ナット7、7同士の間にそれぞれ取付けられている。以下、フランジ離間防止装置10について説明する。   The fluid pipe 1, the split T-shaped pipe 3, and the fluid valve 4 are a part of pipes constituting a pipe network embedded in the ground, and the sealing performance between the flanges 3d and 4d is caused by an external force or secular change due to an earthquake or the like. May decrease. Thus, in order to prevent a decrease in the sealing performance between the flanges 3d and 4d, as shown in FIGS. 1 and 2, the flange separation preventing device 10 is provided around the flanges 3d and 4d. It is attached between the bolts and nuts 7 adjacent to each other in the direction. Hereinafter, the flange separation preventing device 10 will be described.

図3及び図4に示されるように、フランジ離間防止装置10は、挟持部材11、方向変換部材としての挟持片12、回動部材14、進退部材15、進退移動規制手段としての係止部材16より主に構成される。   As shown in FIGS. 3 and 4, the flange separation preventing device 10 includes a clamping member 11, a clamping piece 12 as a direction changing member, a rotating member 14, an advancing / retreating member 15, and a locking member 16 as an advancing / retreating movement restricting means. More mainly composed.

挟持部材11は一対のフランジ3d、4dの外周面に対向する内底面11dを有する基底部11aと、該基底部11aの両端に立設される第1壁部11b、第2壁部11cからなる側面視略コ字状の部材である。基底部11aの一端側及び第1壁部11bは、後述する回動部材14と、該回動部材14の回動により進退を伴う進退部材15、進退部材15の進退方向と異なる方向に変位を生成する方向変換部材としての挟持片12を有する。第2壁部11cの内壁には、内底面11dに連なりフランジの管軸方向端面を押圧するフランジ押圧面11fが形成されている。   The clamping member 11 includes a base portion 11a having an inner bottom surface 11d facing the outer peripheral surfaces of the pair of flanges 3d and 4d, and a first wall portion 11b and a second wall portion 11c that are erected on both ends of the base portion 11a. It is a substantially U-shaped member in side view. The one end side of the base portion 11a and the first wall portion 11b are displaced in a direction different from the advancing / retreating member 15 and the advancing / retreating direction 15 of the advancing / retreating member 15 by rotation of the rotating member 14, which will be described later. It has the clamping piece 12 as a direction change member to produce | generate. A flange pressing surface 11f is formed on the inner wall of the second wall portion 11c so as to continue to the inner bottom surface 11d and press the end surface of the flange in the tube axis direction.

図4に示されるように、方向変換部材としての挟持片12は、フランジの管軸方向の端面を押圧するフランジ押圧面12a、進退部材15の進退方向に対し傾斜する傾斜受圧面12b、第1壁部11bに形成された壁部傾斜面11eに当接する当接傾斜面12eを有する側面視略台形状の部材である。   As shown in FIG. 4, the clamping piece 12 as the direction changing member includes a flange pressing surface 12 a that presses the end surface of the flange in the tube axis direction, an inclined pressure receiving surface 12 b that is inclined with respect to the advancing and retracting direction of the advancing and retracting member 15, It is a substantially trapezoidal member in a side view having a contact inclined surface 12e that contacts a wall inclined surface 11e formed on the wall 11b.

図3及び図4に示されるように、挟持片12には、所定の深さを有する両端の閉じた溝12fが設けられ、該溝12fに収納された弾性体17が挟持部材11の側壁溝部11k(図3参照)との間に配設され、弾性体17の反発力によって、挟持片12は挟持部材11の第1壁部11bに保持されている。このように挟持片12は弾性体17によって保持されることで、挟持片12に曲げ力が加わったときであっても、弾性体17が変形して挟持片12は追従するので、フランジ3d、4dに無理な力が加わることなく、フランジ3d、4dの傷付きを防ぐことができる。   As shown in FIGS. 3 and 4, the clamping piece 12 is provided with closed grooves 12 f at both ends having a predetermined depth, and the elastic body 17 housed in the groove 12 f is a side wall groove portion of the clamping member 11. 11 k (see FIG. 3), and the holding piece 12 is held by the first wall portion 11 b of the holding member 11 by the repulsive force of the elastic body 17. Since the holding piece 12 is held by the elastic body 17 in this way, even when a bending force is applied to the holding piece 12, the elastic body 17 is deformed and the holding piece 12 follows, so that the flange 3d, It is possible to prevent the flanges 3d and 4d from being damaged without applying an excessive force to 4d.

図3及び図4に示されるように、回動部材14は、雄ネジ部14a、係止凹部14b、回動部材頭部14cを有する。また、進退部材15は、内部に雌ネジ部15aを有する筒状部材で、回動部材14の雄ネジ部14aと進退部材15の雌ネジ部15aとが螺合した状態で挟持部材11形成された孔11jに挿入されている。   As shown in FIGS. 3 and 4, the rotating member 14 has a male screw portion 14a, a locking recess 14b, and a rotating member head portion 14c. The advancing / retracting member 15 is a cylindrical member having a female screw portion 15a therein, and the holding member 11 is formed in a state where the male screw portion 14a of the rotating member 14 and the female screw portion 15a of the advancing / retreating member 15 are screwed together. Is inserted into the hole 11j.

また、図5に示されるように、フランジ離間防止装置10は、回動部材14自身の回動による進退移動を規制する進退移動規制手段としての係止部材16を備えている。係止部材16は、挟持部材11に形成された係止孔部11hに挿入され、回動部材14に形成された係止凹部14bに係止されることによって、回動部材14の進退移動を規制している。進退移動規制手段としての係止部材16を設けることによって、回動部材14を回動させても回動部材14自身は進退することがないので、回動部材14の回動方向の動きを効率よく進退部材15に伝達することができ、延いては進退部材15を効率良く進退させることができる。なお、本実施例においては、係止部材16は、挟持部材11に対する抜止め効果を有するスプリングピンを使用しているが、回動部材14の進退移動を規制でき、挟持部材11に対する抜止め効果を有するものであれば、通常のピンを使用してもよい。   Further, as shown in FIG. 5, the flange separation preventing device 10 includes a locking member 16 as an advance / retreat movement restricting means for restricting the advance / retreat movement due to the rotation of the rotation member 14 itself. The locking member 16 is inserted into a locking hole 11 h formed in the holding member 11 and is locked in a locking recess 14 b formed in the rotating member 14, thereby moving the rotating member 14 forward and backward. It is regulated. By providing the locking member 16 as the advance / retreat movement restricting means, even if the rotation member 14 is rotated, the rotation member 14 itself does not advance or retreat, so that the movement of the rotation member 14 in the rotation direction is efficient. It can be transmitted to the advance / retreat member 15 well, and the advance / retreat member 15 can be efficiently advanced / retreated. In this embodiment, the locking member 16 uses a spring pin having a retaining effect with respect to the holding member 11. However, the advancing and retreating movement of the rotating member 14 can be restricted, and the retaining effect with respect to the holding member 11. If it has, you may use a normal pin.

さらに、進退部材15は、回動部材14に対する供回りを防止するため、供回り防止機構としての進退部材平坦部15gを備えている。図5の(b)に示されるように、進退部材平坦部15gは、挟持部材11に形成された挟持部材平坦部11gに当接することにより、進退部材15の供回りを防止している。供回り防止機構を備えることによって、進退部材15は回動部材14に対して供回りすることがないので、回動部材14の回動運動を効率よく進退部材15の進退移動に変換することができる。   Further, the advance / retreat member 15 includes an advance / retreat member flat portion 15 g as a rotation prevention mechanism in order to prevent the rotation of the rotation member 14. As shown in FIG. 5B, the advance / retreat member flat portion 15 g prevents the advance / retreat member 15 from rotating by contacting the holding member flat portion 11 g formed on the holding member 11. By providing the rotation prevention mechanism, the advance / retreat member 15 does not rotate with respect to the rotation member 14. Therefore, the rotation movement of the rotation member 14 can be efficiently converted into the advance / retreat movement of the advance / retreat member 15. it can.

また、図4及び図5に示されるように、進退部材15は、挟持片12に対する供回りを防止するため、供回り防止機構としての進退部材平坦部15bを備えている。進退部材傾斜面15bは、その進退方向に対して傾いているので、進退部材傾斜面15bが傾斜受圧面12bと当接することによって、進退部材15は挟持片12に対しても回動が規制される。進退部材15は、挟持片12に対する供回りも防止されるので、回動部材14の回動運動を確実に進退部材15の進退移動に変換することができる。   Further, as shown in FIGS. 4 and 5, the advance / retreat member 15 includes an advance / retreat member flat portion 15 b as a rotation prevention mechanism in order to prevent rotation with respect to the sandwiching piece 12. Since the advancing / retracting member inclined surface 15b is inclined with respect to the advancing / retreating direction, the advancing / retreating member inclined surface 15b abuts against the inclined pressure receiving surface 12b, whereby the advance / retreat member 15 is also restricted from rotating with respect to the holding piece 12. The Since the advance / retreat member 15 is prevented from being rotated with respect to the holding piece 12, the rotational movement of the rotation member 14 can be reliably converted into the advance / retreat movement of the advance / retreat member 15.

ここで、フランジ離間防止部材10の動作について説明する。   Here, the operation of the flange separation preventing member 10 will be described.

図4、図5に示されるように、回動部材頭部14cを回動すると、回動部材14の雄ネジ部14aに螺合する進退部材15が進退する。回動部材14は挟持部材11に対する進退移動が規制されるとともに、進退部材15は回動部材14と供回りしないようになっているので、回動部材14の回動方向の動きは進退部材15に伝達され、進退部材15は効率よく進退する。挟持片12は、進退部材15の進退部材傾斜面15bにより押圧される傾斜受圧面12bと、壁部傾斜面11eに当接する当接傾斜面12eとから押圧されるので、進退部材15の進退方向と異なる方向の変位が効率よく生成され、フランジ押圧面12aは、進退部材15の進退方向に対し略直角に変位する。   As shown in FIGS. 4 and 5, when the rotating member head 14 c is rotated, the advancing / retracting member 15 that is screwed into the male screw portion 14 a of the rotating member 14 moves forward and backward. The turning member 14 is restricted from moving back and forth with respect to the clamping member 11, and the advancing / retreating member 15 is prevented from rotating with the turning member 14, so that the movement of the turning member 14 in the turning direction is the advance / retreat member 15. The advance / retreat member 15 advances / retreats efficiently. Since the clamping piece 12 is pressed from the inclined pressure receiving surface 12b pressed by the advance / retreat member inclined surface 15b of the advance / retreat member 15 and the contact inclined surface 12e that contacts the wall inclined surface 11e, the advance / retreat direction of the advance / retreat member 15 is increased. The flange pressing surface 12a is displaced substantially at right angles to the advance / retreat direction of the advance / retreat member 15.

また、回動部材14の回動力は、挟持片12の傾斜受圧面12b及び壁部傾斜面11eに当接する当接傾斜面12eの楔効果で増幅され、挟持片12のフランジ押圧面12aと挟持部材11のフランジ押圧面11fとの間で一対のフランジ3d、4d(図6参照)を強力に挟持して、一対のフランジが離間することを防止することができる。   Further, the rotational force of the rotating member 14 is amplified by the wedge effect of the inclined pressure receiving surface 12b of the holding piece 12 and the contact inclined surface 12e that comes into contact with the wall inclined surface 11e, and is held between the flange pressing surface 12a of the holding piece 12. The pair of flanges 3d and 4d (see FIG. 6) can be strongly sandwiched between the flange pressing surface 11f of the member 11 and the pair of flanges can be prevented from separating.

つぎに、フランジ離間防止装置10の取付工程について説明する。   Next, an attachment process of the flange separation preventing device 10 will be described.

図1、図2及び図3に示されるように、フランジ3d、4dを締付け固定する複数のボルト・ナット7、7…の間に、複数のフランジ離間防止装置10を仮止めする。仮止めは、挟持部材11の第1壁部11b、第2壁部11cの間にフランジ3d、4dが位置するように配置し、回動部材14を軽く締付け、進退部材15を進入させ、挟持片12のフランジ押圧面12aと挟持部材11のフランジ押圧面11fとの間に一対のフランジ3d、4dを軽く挟持する。同じく、他の複数のフランジ離間防止装置10も、互いにフランジ3d、4dの管軸に略対称になるように配置する。尚、図2においては、フランジ離間防止装置10は6個配置されているが、設置条件に応じて、フランジ3d、4dを締付け固定する複数のボルト・ナット7、7…の間すべてに配置してもよいし、複数のボルト・ナット7、7…の2個おきに配置してもよい。尚、図1(a)、(b)において、フランジ離間防止装置10は、すべての回動部材14が流体管1側に配置されるように取付けられているが、すべての回動部材14が流体弁4側に配置されるように取付けてもよいし、回動部材14が流体管1側と流体弁4側とに混在して配置されるように取付けてもよい。   As shown in FIGS. 1, 2 and 3, a plurality of flange separation preventing devices 10 are temporarily fixed between a plurality of bolts, nuts 7, 7... The temporary fixing is arranged so that the flanges 3d and 4d are positioned between the first wall portion 11b and the second wall portion 11c of the holding member 11, and the rotating member 14 is lightly tightened and the advancing and retracting member 15 is advanced to hold the holding member. A pair of flanges 3d and 4d are lightly clamped between the flange pressing surface 12a of the piece 12 and the flange pressing surface 11f of the clamping member 11. Similarly, the other plurality of flange separation preventing devices 10 are also arranged so as to be substantially symmetrical with respect to the tube axes of the flanges 3d and 4d. In FIG. 2, six flange separation prevention devices 10 are arranged. However, according to the installation conditions, the flange separation preventing devices 10 are arranged between a plurality of bolts, nuts 7, 7... For tightening and fixing the flanges 3d, 4d. Alternatively, a plurality of bolts / nuts 7, 7,... 1A and 1B, the flange separation preventing device 10 is attached so that all the rotating members 14 are arranged on the fluid pipe 1 side. You may attach so that it may be arrange | positioned at the fluid valve 4 side, and you may attach so that the rotation member 14 may be mixed and arrange | positioned at the fluid pipe | tube 1 side and the fluid valve 4 side.

つぎに、回動部材14の回動部材頭部14cを回動して締付けを行う。回動部材14の回動により進退部材15が進入し、進退部材15の変位は方向変換部材としての挟持片12によって、進退部材の進退方向と異なる方向に変位が生成され、挟持片12のフランジ押圧面12aと挟持部材11のフランジ押圧面11fとの間で一対のフランジ3d、4dを挟持して、一対のフランジが離間することを防止できるようになる。なお、回動部材14はトルク管理によって締付けを行ってもよい。   Next, the rotating member head 14c of the rotating member 14 is rotated and tightened. The advance / retreat member 15 enters by the rotation of the turning member 14, and the displacement of the advance / retreat member 15 is generated in a direction different from the advance / retreat direction of the advance / retreat member by the holding piece 12 as the direction changing member. The pair of flanges 3d and 4d are sandwiched between the pressing surface 12a and the flange pressing surface 11f of the clamping member 11, and the pair of flanges can be prevented from separating. The rotating member 14 may be tightened by torque management.

同様に、周方向に沿って複数配設される他のフランジ離間防止装置10についても、回動部材14を順次締付けることで、一対のフランジ3d、4dは挟持片12のフランジ押圧面12aと挟持部材11のフランジ押圧面11fとの間で周方向に亘って挟持され、フランジ離間防止装置10の取付工程が完了する。尚、回動部材14は片締めにならないように、均等に少しずつ締めていくことが好ましい。   Similarly, with respect to the other flange separation preventing devices 10 arranged along the circumferential direction, the pair of flanges 3d and 4d are clamped with the flange pressing surface 12a of the clamping piece 12 by sequentially tightening the rotating member 14. The flange 11 is sandwiched between the flange pressing surface 11f of the member 11 in the circumferential direction, and the attachment process of the flange separation preventing device 10 is completed. In addition, it is preferable to tighten the rotating member 14 little by little evenly so as not to be single-clamped.

ここで、図6に示されるように、点線囲い部Mは、本発明に係るフランジ離間防止装置10を使用した締付け状況を示す図で、点線囲い部Nは、従来のフランジ離間防止装置60を使用した締付け状況を示す図である。点線囲い部Mの本発明に係るフランジ離間防止装置10は、回動部材14が流体弁4の径方向に配設されていても、方向変換部材としての挟持片12によって回動部材14の回動により進退する進退部材15の変位を流体弁4の管軸方向に変換してフランジ3d、4dを締付けるので、回動部材14の回動部材頭部14cを締付けるための工具は、離脱防止押輪6と干渉することなく、締付け作業を行うことができる。一方、点線囲い部Nの従来のフランジ離間防止装置60は、押圧ボルト64がフランジの管軸方向に配設されているため、六角レンチ70が離脱防止押輪6と干渉し、押しボルト64の締付けを適正に行うことが困難となってしまう。   Here, as shown in FIG. 6, a dotted line enclosing portion M is a view showing a tightening situation using the flange separation preventing device 10 according to the present invention, and a dotted line enclosing portion N is a conventional flange separation preventing device 60. It is a figure which shows the used tightening condition. In the flange separation preventing device 10 according to the present invention of the dotted line enclosing portion M, even if the rotating member 14 is disposed in the radial direction of the fluid valve 4, the rotating member 14 is rotated by the clamping piece 12 as the direction changing member. Since the displacement of the advancing / retreating member 15 that moves forward and backward by the movement is converted into the tube axis direction of the fluid valve 4 and the flanges 3d and 4d are tightened, a tool for tightening the rotating member head 14c of the rotating member 14 is a separation preventing push wheel. The tightening operation can be performed without interfering with 6. On the other hand, in the conventional flange separation preventing device 60 of the dotted line enclosing portion N, since the pressing bolt 64 is arranged in the tube axis direction of the flange, the hexagon wrench 70 interferes with the separation preventing pusher 6 and tightens the pressing bolt 64. It will be difficult to carry out properly.

このように、本発明のフランジ離間防止装置10は、挟持部材11の第1壁部11b側には回動部材14と、進退部材15と、方向変換部材としての挟持片12と、を備え、前記挟持片12は、回動部材14の回動により進退する進退部材15の変位と異なる方向に変位を生成して、第1壁部11b、第2壁部11cの間に一対のフランジ3d、4dを挟持するので、一対のフランジ3d、4dに近接する離脱防止押輪6と干渉することなく、フランジ3d、4dの離間防止を行うことができる。なお、挟持部材11の第1壁部11b側、第2壁部11c側のそれぞれに、回動部材、進退部材及び方向変換部材としての挟持片を設けてもよい。   Thus, the flange separation preventing device 10 of the present invention includes the rotating member 14, the advance / retreat member 15, and the clamping piece 12 as the direction changing member on the first wall 11b side of the clamping member 11, The clamping piece 12 generates a displacement in a direction different from the displacement of the advance / retreat member 15 that advances and retreats by the rotation of the rotation member 14, and a pair of flanges 3d, between the first wall portion 11b and the second wall portion 11c, Since 4d is clamped, the separation of the flanges 3d and 4d can be prevented without interfering with the separation preventing pusher 6 adjacent to the pair of flanges 3d and 4d. In addition, you may provide the clamping piece as a rotation member, an advancing / retreating member, and a direction change member in the 1st wall part 11b side and the 2nd wall part 11c side of the clamping member 11, respectively.

上記実施例においては、方向変換部材は、挟持片12によって構成していたが、方向変換部材の変形例として図7に示されるように、挟持片12と介設部材13とから構成してもよい。   In the above embodiment, the direction changing member is constituted by the sandwiching piece 12. However, as shown in FIG. 7 as a modification of the direction changing member, the direction changing member may be constituted by the sandwiching piece 12 and the interposed member 13. Good.

介設部材13は、所定の肉厚を有する側面視略台形状の部材で、進退部材15の押圧面15cによって押圧される被押圧面13cと、挟持片12の傾斜受圧面12bに摺動しながら変位する傾斜受圧面13bと、を備える。   The interposed member 13 is a substantially trapezoidal member having a predetermined thickness in side view, and slides on the pressed surface 13c pressed by the pressing surface 15c of the advance / retreat member 15 and the inclined pressure receiving surface 12b of the holding piece 12. An inclined pressure receiving surface 13b that is displaced while being displaced.

図7に示されるように、回動部材14を回動させ進退部材15を進入させると、進退部材15の押圧面15cは被押圧面13cを押圧し、介設部材13の傾斜受圧面13bは挟持片12の傾斜受圧面12bと摺動しながら進入すると、挟持片12のフランジ押圧面12aは、進退部材15の進退方向と異なる方向に変位する。そして、回動部材14の回動力は、進退部材15の進退力及び変位に変換され、該進退力及び変位は、介設部材13の傾斜受圧面13b及び挟持片12の傾斜受圧面12b並びに挟持部材11の壁部傾斜面11e及び挟持片12の当接傾斜面12eとの楔効果で効率よく増幅されるとともに、進退部材15の進退変位の方向を効率よく変換して、一対のフランジ3d、4dを挟持して離間を防止できる。さらに、介設部材13を設けることによって、摺動面となる傾斜受圧面12b、13bの面圧を下げることができ、摺動による傾斜受圧面12b、13bの傷つきを低減でき、進退部材15を滑らかに進退させることができる。   As shown in FIG. 7, when the rotation member 14 is rotated and the advance / retreat member 15 is entered, the pressing surface 15c of the advance / retreat member 15 presses the pressed surface 13c, and the inclined pressure receiving surface 13b of the interposition member 13 is When entering while sliding with the inclined pressure receiving surface 12b of the clamping piece 12, the flange pressing surface 12a of the clamping piece 12 is displaced in a direction different from the advancing / retreating direction of the advancing / retreating member 15. The turning force of the rotating member 14 is converted into the advance / retreat force and displacement of the advance / retreat member 15, and the advance / retreat force and displacement are applied to the inclined pressure receiving surface 13 b of the interposed member 13, the inclined pressure receiving surface 12 b of the holding piece 12, and the clamping. Amplifying efficiently by the wedge effect of the wall 11 inclined surface 11e of the member 11 and the contact inclined surface 12e of the sandwiching piece 12, and efficiently changing the direction of the advancing / retreating displacement of the advancing / retreating member 15, 4d can be clamped to prevent separation. Furthermore, by providing the interposition member 13, the surface pressure of the inclined pressure receiving surfaces 12b and 13b serving as sliding surfaces can be reduced, damage to the inclined pressure receiving surfaces 12b and 13b due to sliding can be reduced, and the advancing and retracting member 15 can be It can be advanced and retracted smoothly.

また、挟持部材11のフランジ押圧面11f、挟持片12のフランジ押圧面12aは、フランジ3d、4dとの相対的な動きがほとんどないので、フランジ3d、4dの損傷を防止することができ、延いては損傷による錆の発生が抑えられる。   Further, since the flange pressing surface 11f of the clamping member 11 and the flange pressing surface 12a of the clamping piece 12 have almost no relative movement with the flanges 3d and 4d, the flanges 3d and 4d can be prevented from being damaged. Therefore, the generation of rust due to damage can be suppressed.

以上、本発明の実施例を図面により説明してきたが、具体的な構成はこれら実施例に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。   Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

上記実施例においては、挟持部材11の係止孔部11hに挿入された係止部材16によって、回動部材14は、回動部材14自身の回動による進退移動が規制され、また、進退部材15は、進退部材平坦部15gと挟持部材平坦部11gとが当接することにより、回動部材14との供回りが防止されている(図5参照)。しかしながら、回動部材の進退移動規制手段、回動部材の供回り防止手段は、これに限らない。   In the above-described embodiment, the locking member 16 inserted into the locking hole portion 11h of the holding member 11 restricts the advancing / retreating movement of the rotating member 14 due to the rotation of the rotating member 14 itself. 15, the advancement / retraction member flat part 15g and the sandwiching member flat part 11g are in contact with each other, so that the rotation of the rotation member 14 is prevented (see FIG. 5). However, the forward / backward movement restricting means of the rotating member and the rotation preventing means of the rotating member are not limited thereto.

回動部材の進退移動規制手段、進退部材の供回り防止手段の別の変形例を図8及び図9に示す。進退移動規制手段としての保持部材28は、袋ナットから構成される。回動部材24と進退部材25とを螺合して一体に組立てたものを挟持部材21に形成された略矩形状の孔部21pに挿入し、挟持部材21の雄ネジ部21nと保持部材28の雌ネジ部22nとを螺合させ、回動部材24の鍔部24bを挟持部材21と保持部材28とによって保持し、回動部材24の進退移動を規制することができる。   FIG. 8 and FIG. 9 show another modification of the advance / retreat movement restricting means for the rotating member and the rotation preventing means for the advance / retreat member. The holding member 28 as the advance / retreat movement restricting means is constituted by a cap nut. The rotation member 24 and the advancing / retracting member 25 are screwed together and assembled into one piece and inserted into a substantially rectangular hole 21p formed in the holding member 21, and the male screw portion 21n of the holding member 21 and the holding member 28 are inserted. The female screw portion 22n is screwed together, and the flange portion 24b of the rotating member 24 is held by the holding member 21 and the holding member 28, so that the forward / backward movement of the rotating member 24 can be restricted.

また、図9(c)に示されるように、進退部材25は、供回り防止手段として平坦部25gを備える。進退部材25の平坦部25gは挟持部材21の孔部21pの挟持部材壁部21gと当接し、進退部材25は挟持部材21に対して供回りが規制される。さらに、進退部材25の進退部材傾斜面25bは、挟持片22の傾斜受圧面22bと当接することによって、進退部材25は、挟持片22に対しても供回りが規制される。   Further, as shown in FIG. 9C, the advance / retreat member 25 includes a flat portion 25g as a rotation prevention means. The flat portion 25g of the advance / retreat member 25 abuts on the holding member wall portion 21g of the hole 21p of the holding member 21, and the advance / retreat member 25 is restricted from being rotated relative to the holding member 21. Further, the advance / retreat member inclined surface 25 b of the advance / retreat member 25 is in contact with the inclined pressure receiving surface 22 b of the holding piece 22, so that the advance / retreat member 25 is also restricted from rotating with respect to the holding piece 22.

図7と同じく、図10においても、方向変換部材を介設部材23及び挟持片22の複数の部材から構成し、進退部材25の進退力を楔効果で効率よく増幅するとともに、進退部材25の進退変位の方向を効率よく変換して、一対のフランジ3d、4dを挟持して離間を防止することもできる。加えて、介設部材23を設けることによって、介設部材23と挟持片22との接触面圧を下げることができ、介設部材23と挟持片22との傷つきを低減でき、進退部材25を滑らかに進退させることができる。   As in FIG. 7, also in FIG. 10, the direction changing member is composed of a plurality of members including the interposed member 23 and the holding piece 22, and the advancing / retracting force of the advancing / retreating member 25 is efficiently amplified by the wedge effect. The direction of forward / backward displacement can be efficiently converted, and the pair of flanges 3d, 4d can be sandwiched to prevent separation. In addition, by providing the interposition member 23, the contact surface pressure between the interposition member 23 and the sandwiching piece 22 can be reduced, the damage between the interposition member 23 and the sandwiching piece 22 can be reduced, and the advancing / retreating member 25 can be It can be advanced and retracted smoothly.

回動部材の進退移動規制手段、進退部材の供回り防止手段の別の変形例を図11及び図12に示す。進退移動規制手段としての保持部材38は、断面六角形となるキャップから構成される。回動部材34の頭部34cに摺動部材37を取付け、回動部材34の雄ネジ部34aと進退部材35の雌ネジ部35aを螺合して一体に組立てたものを、挟持部材31のテーパ部31s側から挿入する。そして、断面略正方形に形成した回動部材34の頭頂部34jに保持部材38を取付け、保持部材38の孔部38hと回動部材34の孔部34hに係止部材36を打込むことによって、回動部材34自身の進退による移動を規制することができる。このように、回動部材34の頭部34cに摺動部材37を設けることにより、回動部材34を回動するときの摩擦を低減できるので、容易に回動部材34を回動して、進退部材35を進退させることができる。   FIG. 11 and FIG. 12 show another modification of the advance / retreat movement restricting means for the rotating member and the rotation preventing means for the advance / retreat member. The holding member 38 as the forward / backward movement restricting means is constituted by a cap having a hexagonal cross section. A sliding member 37 is attached to the head 34c of the rotating member 34, and the male screw portion 34a of the rotating member 34 and the female screw portion 35a of the advancing / retracting member 35 are screwed together so as to be integrated. It inserts from the taper part 31s side. Then, by attaching the holding member 38 to the top 34j of the turning member 34 formed in a substantially square cross section, and driving the locking member 36 into the hole 38h of the holding member 38 and the hole 34h of the turning member 34, The movement of the rotating member 34 itself can be restricted. Thus, by providing the sliding member 37 on the head 34c of the rotating member 34, the friction when rotating the rotating member 34 can be reduced, so the rotating member 34 can be easily rotated, The advance / retreat member 35 can be advanced and retracted.

また、図12(c)に示されるように、進退部材35は、供回り防止手段として平坦部35tを備える。進退部材35の平坦部35tは挟持部材31に形成された当接面31tと当接し、進退部材35は挟持部材31に対して供回りが規制される。さらに、進退部材35の進退部材傾斜面35bは、挟持片32の傾斜受圧面32bと当接することによって、進退部材35は、挟持片32に対しても供回りが規制される。   Moreover, as shown in FIG.12 (c), the advance / retreat member 35 is provided with the flat part 35t as a rotation prevention means. The flat portion 35t of the advance / retreat member 35 abuts on a contact surface 31t formed on the sandwiching member 31, and the advance / retreat member 35 is restricted from rotating with respect to the sandwiching member 31. Further, the advance / retreat member inclined surface 35 b of the advance / retreat member 35 is in contact with the inclined pressure receiving surface 32 b of the holding piece 32, so that the advance / retreat member 35 is also restricted from rotating with respect to the holding piece 32.

なお、フランジ離間防止装置のさらなる変形例として、図13に示されるように、挟持部材31のテーパ部31uを回動部材34の鍔部34bに達する位置まで設けることにより、回動部材34、摺動部材37及び進退部材35を一体に組立てたものをテーパ部31u側から容易に挿入、組立てすることができる。図13においても、保持部材38は回動部材34の挟持部材31に対する進退移動規制手段、進退部材35の平坦部35tは挟持部材31に対する供回り防止手段、進退部材35の進退部材傾斜面35bは挟持片32に対する供回り防止手段として機能する。   As a further modification of the flange separation preventing device, as shown in FIG. 13, by providing the tapered portion 31 u of the clamping member 31 to a position reaching the flange portion 34 b of the rotating member 34, A member in which the moving member 37 and the advance / retreat member 35 are assembled together can be easily inserted and assembled from the tapered portion 31u side. Also in FIG. 13, the holding member 38 is an advance / retreat movement restricting means for the rotation member 34 with respect to the holding member 31, the flat portion 35 t of the advance / retreat member 35 is a rotation preventing means for the holding member 31, and the advance / retreat member inclined surface 35 b of the advance / retreat member 35 is It functions as a rotation prevention means for the sandwiching piece 32.

さらに、図7及び図10と同じく、図14においても、方向変換部材を介設部材43及び挟持片42の複数の部材から構成し、進退部材45の進退力を楔効果で効率よく増幅するとともに、進退部材45の進退変位の方向を効率よく変換して、一対のフランジ3d、4dを挟持して離間を防止することができる。さらに、介設部材43を設けることによって、介設部材43と挟持片42との接触面圧を下げることができ、介設部材43と挟持片42との傷つきを低減でき、進退部材45を滑らかに進退させることができる。   Further, as in FIGS. 7 and 10, in FIG. 14 as well, the direction changing member is composed of a plurality of members of the interposing member 43 and the sandwiching piece 42, and the advancing and retracting force of the advancing and retracting member 45 is efficiently amplified by the wedge effect. The direction of the advance / retreat displacement of the advance / retreat member 45 can be efficiently converted, and the pair of flanges 3d, 4d can be sandwiched to prevent separation. Furthermore, by providing the interposition member 43, the contact surface pressure between the interposition member 43 and the sandwiching piece 42 can be reduced, the damage between the interposition member 43 and the sandwiching piece 42 can be reduced, and the advance / retreat member 45 can be made smooth. You can move forward and backward.

また、図14に示されるように、挟持片42のフランジ押圧面42aに介在体42v、挟持部材41の内底面41d及びフランジ押圧面41fに介在体41vを設け、フランジ3d、4dを保護、絶縁してもよい。尚、介在体41v、42vは、樹脂またはゴム等を成形した絶縁体を接着するほか、ナイロンコーティング、ゴムライニング、プラスチック塗装、エポキシ樹脂粉体塗装等により形成することができる。   Further, as shown in FIG. 14, an interposition body 42v is provided on the flange pressing surface 42a of the clamping piece 42, and an interposition body 41v is provided on the inner bottom surface 41d and the flange pressing surface 41f of the clamping member 41 to protect and insulate the flanges 3d and 4d. May be. The interposers 41v and 42v can be formed by bonding an insulator formed by resin or rubber or the like, or by nylon coating, rubber lining, plastic coating, epoxy resin powder coating, or the like.

実施例1のフランジ離間防止装置10は、挟持片が挟持部材に対し摺動するものであったが、挟持片が挟持部材に対し転動するように構成することもできる。実施例2のフランジ離間防止装置50においては、挟持片52が挟持部材51に対し転動する点が実施例1のフランジ離間防止装置10と相違するが、その他の構成は実施例1フランジ離間防止装置10と同じであり、重複する説明は省略する。   In the flange separation preventing device 10 of the first embodiment, the sandwiching piece slides with respect to the sandwiching member. However, the sandwiching piece may be configured to roll with respect to the sandwiching member. The flange separation preventing device 50 of the second embodiment is different from the flange separation preventing device 10 of the first embodiment in that the clamping piece 52 rolls with respect to the clamping member 51, but the other configuration is the flange separation preventing device of the first embodiment. Since it is the same as the apparatus 10, the overlapping description is omitted.

図15に示されるように、フランジ離間防止装置50は、挟持部材51、方向変換部材としての挟持片52、回動部材54、進退部材55より主に構成される。   As shown in FIG. 15, the flange separation preventing device 50 is mainly composed of a clamping member 51, a clamping piece 52 as a direction changing member, a rotating member 54, and an advancing / retracting member 55.

挟持片52は、曲面からなるフランジ押圧面52aと、挟持部材51の壁面51wを転動する転動面52cと、軸51sとを有する。挟持片52の軸51sは図示しない側壁に挿入され、挟持片52は挟持部材51に対し転動自在に支持される。   The sandwiching piece 52 has a flange pressing surface 52a formed of a curved surface, a rolling surface 52c that rolls on the wall surface 51w of the sandwiching member 51, and a shaft 51s. The shaft 51 s of the holding piece 52 is inserted into a side wall (not shown), and the holding piece 52 is supported by the holding member 51 so as to be able to roll.

転動面52cは軸51sの中心から半径R2の曲面に形成され、フランジ押圧面52aは軸51sの中心と異なる位置に中心を有し、半径R1の曲面で形成されている。回動部材54を回動して、進退部材55を進入させることによって挟持片52の被押圧面52bを押圧すると、挟持片52は転動して起立する。すると、フランジ押圧面52aは挟持部材51の第1壁部51bの壁面51gからの突出量が大きくなり、進退部材55の進退変位の方向と異なる方向に、一対のフランジ3d、4dを挟持して離間を防止できる。   The rolling surface 52c is formed as a curved surface having a radius R2 from the center of the shaft 51s, and the flange pressing surface 52a has a center at a position different from the center of the shaft 51s and is formed as a curved surface having a radius R1. When the pressing member 52 is pressed by rotating the rotating member 54 and causing the advance / retreat member 55 to enter, the holding piece 52 rolls and stands up. Then, the flange pressing surface 52a has a large protrusion amount from the wall surface 51g of the first wall portion 51b of the clamping member 51, and clamps the pair of flanges 3d and 4d in a direction different from the direction of the advance / retreat displacement of the advance / retreat member 55. Separation can be prevented.

なお、実施例2においても、挟持片52のフランジ押圧面52a、挟持部材51の内底面51d、フランジ押圧面51fに対し、樹脂またはゴム等を成形した絶縁体を接着、ナイロンコーティング、ゴムライニング、プラスチック塗装、エポキシ樹脂粉体塗装等により介在体を形成して、フランジ3d、4dを保護、絶縁することもできる。   Also in the second embodiment, an insulator formed of resin or rubber is bonded to the flange pressing surface 52a of the clamping piece 52, the inner bottom surface 51d of the clamping member 51, and the flange pressing surface 51f, nylon coating, rubber lining, It is also possible to protect and insulate the flanges 3d and 4d by forming an inclusion by plastic coating, epoxy resin powder coating or the like.

1 流体管
3d フランジ
4d フランジ
10、20、30、40、50 フランジ離間防止装置
11、21、31、41、51 挟持部材
11a、51a 基底部
11b、51b 第1壁部(壁部)
11c、51c 第2壁部(壁部)
11d、51d 内底面
12、22、32、42 挟持片(方向変換部材)
12b、22b、32b 傾斜受圧面
13b 傾斜受圧面
12e 当接傾斜面(傾斜受圧面)
13、23、43 介設部材(方向変換部材)
14、24、34、44、54 回動部材
15、25、35、45、55 進退部材
52 挟持片(転動部材)
DESCRIPTION OF SYMBOLS 1 Fluid pipe 3d Flange 4d Flange 10, 20, 30, 40, 50 Flange separation prevention device 11, 21, 31, 41, 51 Holding member 11a, 51a Base part 11b, 51b 1st wall part (wall part)
11c, 51c 2nd wall part (wall part)
11d, 51d Inner bottom surface 12, 22, 32, 42 Nipping piece (direction changing member)
12b, 22b, 32b Inclined pressure receiving surface 13b Inclined pressure receiving surface 12e Abutting inclined surface (inclined pressure receiving surface)
13, 23, 43 Interposing member (direction changing member)
14, 24, 34, 44, 54 Rotating member 15, 25, 35, 45, 55 Advancement / retraction member 52 Nipping piece (rolling member)

Claims (6)

基底部及びその両側に立設される壁部を有する側面視略コ字状の部材であり、ボルト・ナットによって締付け固定された一対のフランジを挟持する挟持部材を備え、前記基底部の内底面が前記一対のフランジの外周面に対向するように配置され、前記一対のフランジが離間することを防止するフランジ離間防止装置であって、
少なくとも前記挟持部材の一方の壁部側には、回動部材と、該回動部材の回動により進退を伴い且つ回動が規制された進退部材と、前記進退部材とは別体であって、前記進退部材の進退方向と異なる方向に変位を生成し、一方の前記フランジの端面を押圧する押圧面を有する方向変換部材と、を備え、前記挟持部材の他方の壁部の端部側には、他方の前記フランジの端面を押圧する押圧面を有することを特徴とするフランジ離間防止装置。
A substantially U-shaped member in side view having a base portion and wall portions erected on both sides of the base portion, and includes a sandwiching member that clamps and fixes a pair of flanges fastened by bolts and nuts, and an inner bottom surface of the base portion Is arranged to face the outer peripheral surfaces of the pair of flanges, and is a flange separation preventing device for preventing the pair of flanges from separating,
At least on one wall side of the clamping member, the rotating member, the advancing / retracting member that is advanced and retracted by the rotation of the rotating member and whose rotation is restricted, and the advancing / retracting member are separate bodies. A direction changing member having a pressing surface that generates a displacement in a direction different from the advancing and retracting direction of the advancing and retracting member and pressing the end surface of one of the flanges, and on the end side of the other wall portion of the clamping member Has a pressing surface that presses the end surface of the other flange.
前記回動部材と前記進退部材とは螺合関係にあり、前記回動部材は前記挟持部材に対して進退移動を規制され、かつ前記進退部材は前記挟持部材に対して回動が規制されることを特徴とする請求項1に記載のフランジ離間防止装置。   The rotating member and the advancing / retracting member are in a screwed relationship, the rotating member is restricted from advancing / retreating relative to the clamping member, and the advancing / retreating member is restricted from rotating relative to the clamping member. The flange separation preventing device according to claim 1. 前記進退部材は前記方向変換部材に対し回動が規制されることを特徴とする請求項1または2に記載のフランジ離間防止装置。   The flange separation preventing device according to claim 1, wherein the advancement / retraction member is restricted from rotating with respect to the direction changing member. 前記方向変換部材は、前記進退部材の進退方向に対し傾斜する傾斜受圧面を有することを特徴とする請求項1ないし3のいずれかに記載のフランジ離間防止装置。   The flange separation preventing device according to any one of claims 1 to 3, wherein the direction changing member has an inclined pressure receiving surface that is inclined with respect to the advancing / retreating direction of the advancing / retreating member. 前記方向変換部材は、複数の部材からなり、各部材は少なくとも一つの傾斜受圧面で当接することを特徴とする請求項1ないし4のいずれかに記載のフランジ離間防止装置。   5. The flange separation preventing device according to claim 1, wherein the direction changing member includes a plurality of members, and each member abuts on at least one inclined pressure receiving surface. 前記方向変換部材は、前記進退部材の進退移動により転動する転動部材であることを特徴とする請求項1ないし3のいずれかに記載のフランジ離間防止装置。   4. The flange separation preventing device according to claim 1, wherein the direction changing member is a rolling member that rolls when the advance / retreat member moves forward / backward. 5.
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JPS5988590U (en) * 1982-12-06 1984-06-15 三菱電機株式会社 plumbing fittings
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