JP6147297B2

JP6147297B2 - Piping connection structure

Info

Publication number: JP6147297B2
Application number: JP2015138557A
Authority: JP
Inventors: 幹政松林; 秀夫小倉
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2015-07-10
Filing date: 2015-07-10
Publication date: 2017-06-14
Anticipated expiration: 2035-07-10
Also published as: JP2017020570A

Description

本発明は、配管を相手部材に着脱可能に接続する配管接続構造に関する。 The present invention relates to a pipe connection structure for detachably connecting a pipe to a mating member.

従来、配管が、ホース本体と、ホース本体に取付けられた管継手とから構成され、管継手に備えるメガネ体が、マスターシリンダーなどの相手部材に設けられたパイプ保持具に穴あきボルトで組付けられる配管接続構造が開示されている（例えば、特許文献１参照）。
穴あきボルトは、その内部に流体通路が形成されるとともに、メガネ体と、メガネ体の両端に配置されたワッシャとを貫通してパイプ保持具に形成されたボルト穴のめねじにねじ結合されている。 Conventionally, piping is composed of a hose body and a pipe joint attached to the hose body, and the eyeglass body provided for the pipe joint is assembled with a perforated bolt on a pipe holder provided on a mating member such as a master cylinder. A pipe connection structure is disclosed (for example, see Patent Document 1).
The perforated bolt has a fluid passage formed therein, and is screwed to a female screw of a bolt hole formed in the pipe holder through the spectacle body and washers disposed at both ends of the spectacle body. ing.

実開昭５９−１３７８８９号公報Japanese Utility Model Publication No. 59-137889

特許文献１では、内部に流体通路が形成された穴あきボルトや、穴あきボルトを通す挿入穴が形成されるメガネ体を有する管継手は、コストが高いという課題があった。
本発明の目的は、コストを低減することが可能な配管接続構造を提供することにある。 In Patent Document 1, a pipe joint having a perforated bolt having a fluid passage formed therein and an eyeglass body in which an insertion hole through which the perforated bolt is passed has a problem of high cost.
The objective of this invention is providing the piping connection structure which can reduce cost.

上述した課題を解決するため、本発明は、配管（１０，６０）を相手部材（１１，３１，４１）に着脱可能に接続することで、流体を前記配管（１０，６０）と前記相手部材（１１，３１，４１）に形成された流体通路（１１ｅ）との間で流通させる配管接続構造において、前記配管（１０，６０）は、ホース本体（２１）と、先端にフランジ（２２ｃ，６２ｃ）が形成されたパイプ体であって前記ホース本体（２１）の端部に取付けられた管継手（２２，６２）とからなり、前記配管（１０，６０）は、前記相手部材（１１，３１、４１）に締結部材（１２，４５，５２）で接続され、前記締結部材（１２，４５，５２）は、前記フランジ（２２ｃ，６２ｃ）を通す挿通穴（１２ｃ，４５ｃ，５２ｃ）と、前記相手部材（１１，３１，４１）にねじ結合されるねじ部（１２ｇ，４５ｄ）とを備え、前記挿通穴（１２ｃ，４５ｃ，５２ｃ）の内周面には、周方向に間隔を開けて配置されるとともに半径方向内側に突出する複数の突出部（１２ｅ，４５ｅ，５２ｋ）と、周方向に隣り合う前記突出部（１２ｅ，４５ｅ，５２ｋ）間に位置する切欠き（１２ｍ，５２ｄ）とが形成され、前記フランジ（２２ｃ，６２ｃ）を、対向する前記切欠き（１２ｍ，５２ｄ）間から斜めにして又は前記締結部材（１２，４５，５２）の軸方向に沿って、前記締結部材（１２，４５，５２）内に挿入し、前記突出部（１２ｅ，４５ｅ，５２ｋ）の相手部材（１１，３１，４１）側の端面で前記相手部材（１１，３１，４１）側へ締め付けることで、前記フランジ（２２ｃ，６２ｃ）に形成された流体流通孔（２２ｄ）を相手部材（１１，３１，４１）の前記流体通路（１１ｅ）と接続することを特徴とする。 In order to solve the above-described problem, the present invention removably connects the pipe (10, 60) to the mating member (11, 31, 41), thereby allowing fluid to flow between the pipe (10, 60) and the mating member. (11, 31, 41) In the pipe connection structure that circulates between the fluid passages (11e), the pipe (10, 60) has a hose body (21) and a flange (22c, 62c at the tip). ) And a pipe joint (22, 62) attached to the end of the hose body (21). The pipe (10, 60) is connected to the mating member (11, 31). 41) with fastening members (12, 45, 52), and the fastening members (12, 45, 52) are inserted through holes (12c, 45c, 52c) through which the flanges (22c, 62c) pass. Mating member (11, 31, 41 Threaded portions (12g, 45d) that are screw-coupled to each other, and are arranged on the inner peripheral surface of the insertion holes (12c, 45c, 52c) at intervals in the circumferential direction and project inward in the radial direction. A plurality of protrusions (12e, 45e, 52k) and notches (12m, 52d) located between the protrusions (12e, 45e, 52k) adjacent in the circumferential direction are formed, and the flanges (22c, 62c ) are formed. ) Is inserted into the fastening member (12, 45, 52) obliquely from between the notches (12m, 52d) facing each other or along the axial direction of the fastening member (12, 45, 52). The flanges (22c, 62c) are formed by tightening the projecting portions (12e, 45e, 52k) to the mating member (11, 31, 41) side by the end surface on the mating member (11, 31, 41) side. Fluid Characterized in that connected to said fluid passage hole (22 d) of the mating member (11,31,41) (11e).

上記構成において、前記フランジ（６２ｃ）は、その外周縁に半径方向内側に窪んだ複数の切欠き（６２ｄ）が周方向に間隔を開けて形成され、前記複数の切欠き（６２ｄ）は、前記締結部材（１２）の複数の前記突出部（１２ｅ）のそれぞれに対応する位置に形成され、前記フランジ（６２ｃ）の各切欠き（６２ｄ）を、前記締結部材（１２）の各突出部（１２ｅ）にそれぞれ合わせ、前記フランジ（６２ｃ）を前記締結部材（１２）に前記締結部材（１２）の軸方向に沿って挿入しても良い。
また、上記構成において、前記締結部材（１２）の前記突出部（１２ｅ）は、前記締結部材（１２）の軸方向に延び、前記突出部（１２ｅ）の前記相手部材（１１）側の一端面（１２ｈ）は、前記締結部材（１２）の全長の中間部に位置するようにしても良い。 In the above-described configuration, the flange (62c) is formed with a plurality of notches (62d) recessed radially inward at an outer peripheral edge thereof at intervals in the circumferential direction, and the plurality of notches (62d) Each notch (62d) of the flange (62c) is formed at a position corresponding to each of the plurality of protrusions (12e) of the fastening member (12), and each protrusion (12e) of the fastening member (12). And the flange (62c) may be inserted into the fastening member (12) along the axial direction of the fastening member (12) .
Moreover, the said structure WHEREIN: The said protrusion part (12e) of the said fastening member (12) extends in the axial direction of the said fastening member (12), and the one end surface by the side of the said counterpart member (11) of the said protrusion part (12e) (12h) is not good be located in the middle portion of the length of the fastening member (12).

また、上記構成において、前記相手部材（１１，３１，４１）は、前記フランジ（２２ｃ，６２ｃ）により押圧される押圧面（１１ｇ）と、前記押圧面（１１ｇ）に開けられた前記流体通路（１１ｅ）と、前記押圧面（１１ｇ）を囲むように形成された筒部（１１ｂ，３１ｂ，４１ｂ）とを備え、前記筒部（１１ｂ，３１ｂ，４１ｂ）に前記締結部材（１２，４５，５２）がねじ結合されるようにしても良い。
また、上記構成において、前記フランジ（２２ｃ，６２ｃ）と前記押圧面（１１ｇ）との間にシール用のワッシャ（１３，３３）が設けられるようにしても良い。 In the above configuration, the mating member (11, 31, 41) includes a pressing surface (11g) pressed by the flange (22c, 62c) and the fluid passage (opened in the pressing surface (11g)). 11e) and cylindrical portions (11b, 31b, 41b) formed so as to surround the pressing surface (11g), and the fastening members (12, 45, 52) are provided on the cylindrical portions (11b, 31b, 41b). ) May be screwed together.
Further, in the above configuration, sealing washers (13, 33) may be provided between the flanges (22c, 62c) and the pressing surface (11g).

本発明の配管は、ホース本体と、先端にフランジが形成されたパイプ体であってホース本体の端部に取付けられた管継手とからなり、管継手のフランジを挿通させる挿通穴を備えるとともに相手部材にねじ結合される締結部材の挿通穴の開口端縁で、フランジを相手部材側へ締め付けることで、フランジに形成された流体流通孔を相手部材の流体通路と接続するので、従来のような、内部にブレーキ液通路が形成された穴あきボルトや、穴あきボルトを通す挿通穴が形成されたメガネ体を有する管継手が不要になり、シール性を損なうことなく配管自体及び配管接続構造のコストを低減することができる。 The pipe of the present invention comprises a hose body and a pipe body having a flange formed at the tip and a pipe joint attached to the end of the hose body, and has an insertion hole through which the flange of the pipe joint is inserted. By tightening the flange to the mating member side at the opening edge of the insertion hole of the fastening member screwed to the member, the fluid flow hole formed in the flange is connected to the fluid passage of the mating member. This eliminates the need for a pipe joint with a perforated bolt with a brake fluid passage formed inside or a spectacle body with an insertion hole through which a perforated bolt is inserted, and without a loss of sealing performance. Cost can be reduced.

また、締結部材の挿通穴に、半径方向内側に突出する突出部を設け、突出部の開口端縁でフランジを締め付けるので、フランジを締結部材の挿通穴から突出部を避けて挿入することで、予め、締結部材を配管に組付けておく必要がなく、配管作業の自由度を高めることができる。また、締結部材は、配管とは別体なので、締結部材又は配管を交換する際に、交換部品数を少なくすることができる。
また、フランジは、突出部に対応する切欠きが形成されているので、挿通穴の突出部にフランジの切欠きを合わせてフランジを挿通穴に挿入し、挿入後に突出部と切欠きとの周方向位置をずらすことで、突出部でフランジの切欠き以外の部分を締め付けることができ、配管の接続を容易に行うことができる。 In addition, since the protrusion that protrudes radially inward is provided in the insertion hole of the fastening member and the flange is tightened at the opening edge of the protrusion, the flange is inserted from the insertion hole of the fastening member while avoiding the protrusion, It is not necessary to assemble the fastening member in advance in the pipe, and the degree of freedom of the piping work can be increased. Further, since the fastening member is separate from the pipe, the number of replacement parts can be reduced when replacing the fastening member or the pipe.
Also, since the flange has a notch that corresponds to the protrusion, align the notch of the flange with the protrusion of the insertion hole, insert the flange into the insertion hole, and insert the flange between the protrusion and the notch. By shifting the directional position, it is possible to tighten the portion other than the notch of the flange with the protruding portion, and the piping can be easily connected.

また、締結部材の挿通穴に、フランジを挿通可能とする切欠きを形成し、挿通穴の切欠きの周囲の開口端縁でフランジを締め付けるので、フランジが切欠きを通じて挿通穴内に挿入される構造であるため、予め、締結部材を配管に組付けておく必要がなく、配管作業の自由度を高めることができる。また、締結部材は、配管とは別体なので、締結部材又は配管を交換する際に、交換部品数を少なくすることができる。 Also, a notch that allows the flange to be inserted is formed in the insertion hole of the fastening member, and the flange is tightened at the opening edge around the notch of the insertion hole, so that the flange is inserted into the insertion hole through the notch Therefore, it is not necessary to assemble the fastening member to the pipe in advance, and the degree of freedom of the piping work can be increased. Further, since the fastening member is separate from the pipe, the number of replacement parts can be reduced when replacing the fastening member or the pipe.

また、相手部材は、フランジにより押圧される押圧面と、押圧面に開けられた流体通路と、押圧面を囲むように形成された筒部とを備え、筒部に締結部材がねじ結合されるので、フランジを筒部内に挿入する構造として、フランジを容易に位置決めすることができ、容易に配管の接続作業を行うことができる。
また、フランジと押圧面との間にシール用のワッシャが設けられるので、１枚のシール用のワッシャでシールすることができ、従来の配管接続構造に比べてワッシャの個数を少なくすることができ、コストを低減することができる。 The mating member includes a pressing surface pressed by the flange, a fluid passage opened in the pressing surface, and a cylindrical portion formed so as to surround the pressing surface, and the fastening member is screwed to the cylindrical portion. Therefore, as a structure in which the flange is inserted into the cylindrical portion, the flange can be easily positioned, and the pipe connection work can be easily performed.
In addition, since a washer for sealing is provided between the flange and the pressing surface, it can be sealed with a single sealing washer, and the number of washers can be reduced as compared with the conventional pipe connection structure. Cost can be reduced.

本発明に係る第１実施形態の配管接続構造を示す分解斜視図である。It is a disassembled perspective view which shows the piping connection structure of 1st Embodiment which concerns on this invention. 配管接続構造の接続された状態を示す斜視図である。It is a perspective view which shows the state by which the pipe connection structure was connected. 配管接続構造の接続された状態を示す縦断面図である。It is a longitudinal section showing the connected state of the pipe connection structure. ボルト部材による管継手の締め付け状態を示す横断面図である。It is a cross-sectional view which shows the fastening state of the pipe joint by a volt | bolt member. 配管を相手部材に接続する接続要領を示す作用図であり、図５（Ａ）〜図５（Ｆ）は、各接続工程を示す作用図である。It is an action figure which shows the connection point which connects piping to a counterpart member, and Drawing 5 (A)-Drawing 5 (F) are action views showing each connection process. 第２実施形態の配管接続構造の接続された状態を示す要部断面図である。It is principal part sectional drawing which shows the connected state of the piping connection structure of 2nd Embodiment. 第３実施形態の配管接続構造の接続された状態を示す要部断面図である。It is principal part sectional drawing which shows the connected state of the piping connection structure of 3rd Embodiment. 第４実施形態の配管接続構造を示す説明図であり、図８（Ａ）は配管のパイプ部及びフランジを示す管継手の横断面図、図８（Ｂ）はボルト部材を示す平面図、図８（Ｃ）はボルト部材でフランジを締め付けた状態を示す平面図である。It is explanatory drawing which shows the piping connection structure of 4th Embodiment, FIG. 8 (A) is a cross-sectional view of the pipe joint which shows the pipe part and flange of piping, FIG.8 (B) is a top view which shows a bolt member, FIG. 8 (C) is a plan view showing a state in which the flange is fastened with a bolt member. 第５実施形態の配管接続構造を示す説明図であり、図９（Ａ）は配管のパイプ部及びフランジを示す管継手の横断面図、図９（Ｂ）はボルト部材を示す平面図、図９（Ｃ）はボルト部材でフランジを締め付けた状態を示す平面図である。It is explanatory drawing which shows the piping connection structure of 5th Embodiment, FIG. 9 (A) is a cross-sectional view of the pipe joint which shows the pipe part and flange of piping, FIG.9 (B) is a top view which shows a bolt member, FIG. 9 (C) is a plan view showing a state in which the flange is fastened with a bolt member.

以下、図面を参照して本発明の各実施形態について説明する。
＜第１実施形態＞
図１は、本発明に係る第１実施形態の配管接続構造を示す分解斜視図である。
配管１０は、その相手部材１１にボルト部材１２で接続され、配管１０と相手部材１１との間で流体（液体、気体）が流通される。なお、符号１３は配管１０と相手部材１１との間に配置されるシール用のワッシャである。配管１０としては、例えば、車両用ブレーキ装置を構成するブレーキ液圧配管が挙げられるが、これ以外の空圧配管、油圧配管でも良い。
配管１０は、ゴム製のホース本体２１と、ホース本体２１の一端部に取付けられた管継手２２とから構成される。なお、符号２１ａはブレーキ液が流れるホース本体２１のブレーキ液通路である。
管継手２２は、ホース本体２１に加締められる加締め部２２ａと、加締め部２２ａから管継手２２の軸方向に延びるパイプ部２２ｂと、パイプ部２２ｂの先端部に設けられたフランジ２２ｃとから一体に形成されている。フランジ２２は、外形が円形でドーナツ形の板状に形成されている。 Hereinafter, each embodiment of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 is an exploded perspective view showing a pipe connection structure according to the first embodiment of the present invention.
The pipe 10 is connected to the mating member 11 by a bolt member 12, and fluid (liquid, gas) is circulated between the pipe 10 and the mating member 11. Reference numeral 13 denotes a sealing washer disposed between the pipe 10 and the mating member 11. Examples of the pipe 10 include a brake hydraulic pipe that constitutes a vehicle brake device, but other pneumatic pipes and hydraulic pipes may be used.
The pipe 10 includes a rubber hose body 21 and a pipe joint 22 attached to one end of the hose body 21. Reference numeral 21a denotes a brake fluid passage of the hose body 21 through which the brake fluid flows.
The pipe joint 22 includes a caulking part 22a that is caulked to the hose body 21, a pipe part 22b that extends from the caulking part 22a in the axial direction of the pipe joint 22, and a flange 22c that is provided at the tip of the pipe part 22b. It is integrally formed. The flange 22 has a circular outer shape and is formed in a donut-shaped plate shape.

相手部材１１は、基部１１ａから一体に突出してボルト部材１２にねじ結合される筒部１１ｂと、筒部１１ｂの底を形成する底壁１１ｃとを備える。筒部１１ｂは、その内周面１１ｆにめねじ１１ｄが形成されている。底壁１１ｃは、ブレーキ液が流通するブレーキ液孔１１ｅが開けられている。なお、符号１１ｇは底壁１１ｃの底面である。
ボルト部材１２は、レンチ等が掛けられる六角形状の頭部１２ａと、頭部１２ａから突出する軸部１２ｂ（図３参照）とからなり、頭部１２ａ及び軸部１２ｂに、管継手２２のフランジ２２ｃを通す継手挿通穴１２ｃが開けられている。
継手挿通穴１２ｃは、その内周面１２ｄに、周方向に等間隔に位置するとともに半径方向内側に突出する複数の突出部１２ｅがボルト部材１２の軸方向に延びている。
ワッシャ１３は、その中央部に、ブレーキ液が流れるブレーキ液孔１３ａが開けられている。 The mating member 11 includes a cylindrical portion 11b that protrudes integrally from the base portion 11a and is screwed to the bolt member 12, and a bottom wall 11c that forms the bottom of the cylindrical portion 11b. The cylindrical portion 11b has a female thread 11d formed on its inner peripheral surface 11f. The bottom wall 11c has a brake fluid hole 11e through which brake fluid flows. Reference numeral 11g denotes a bottom surface of the bottom wall 11c.
The bolt member 12 includes a hexagonal head portion 12a on which a wrench or the like is hung, and a shaft portion 12b (see FIG. 3) protruding from the head portion 12a. The head member 12a and the shaft portion 12b are connected to the flange of the pipe joint 22. A joint insertion hole 12c through which 22c passes is formed.
The joint insertion hole 12c has a plurality of projecting portions 12e, which are located at equal intervals in the circumferential direction and project inward in the radial direction, extending in the axial direction of the bolt member 12 on the inner circumferential surface 12d.
The washer 13 has a brake fluid hole 13a through which brake fluid flows in the center thereof.

本実施形態の配管接続構造では、従来の配管接続構造に比較して、配管１０の管継手２２及びボルト部材１２のそれぞれの構造が簡素にされるとともに、接続方法が変更されている。
具体的には、管継手２２は、パイプ部２２ｂの先端にフランジ２２ｃが設けられた単純な構造を有する。また、ボルト部材１２は、頭部１２ａ及び軸部１２ｂを継手挿通穴１２ｃが貫通し、継手挿通穴１２ｃの内周面に複数の突出部１２ｅを有する単純な構造を有する。このような構造により、配管接続構造のコストが低減されている。
接続方法については、以下で詳細に説明する。 In the pipe connection structure of the present embodiment, the structures of the pipe joint 22 and the bolt member 12 of the pipe 10 are simplified and the connection method is changed as compared with the conventional pipe connection structure.
Specifically, the pipe joint 22 has a simple structure in which a flange 22c is provided at the tip of the pipe portion 22b. Moreover, the bolt member 12 has a simple structure in which the joint insertion hole 12c passes through the head portion 12a and the shaft portion 12b, and a plurality of protrusions 12e are provided on the inner peripheral surface of the joint insertion hole 12c. With such a structure, the cost of the pipe connection structure is reduced.
The connection method will be described in detail below.

図２は、配管接続構造の接続された状態を示す斜視図、図３は、配管接続構造の接続された状態を示す縦断面図である。図３中に示す一点鎖線は、配管接続構造の軸線１０ａを示している。管継手２２、ボルト部材１２、相手部材１１は、軸線１０ａに沿って延びている。軸線１０ａの延びる方向が、管継手２２、ボルト部材１２（締結部材）、相手部材１１のそれぞれの軸方向である（他の実施形態においても同じ。）。
図２に示されるように、配管１０のフランジ２２ｃがボルト部材１２に締め付けられた状態で、配管１０が相手部材１１に接続されている。 2 is a perspective view showing a connected state of the pipe connection structure, and FIG. 3 is a longitudinal sectional view showing a connected state of the pipe connection structure. The dashed-dotted line shown in FIG. 3 has shown the axis line 10a of the pipe connection structure. The pipe joint 22, the bolt member 12, and the mating member 11 extend along the axis 10a. The direction in which the axis 10a extends is the axial direction of each of the pipe joint 22, the bolt member 12 (fastening member), and the counterpart member 11 (the same applies to other embodiments).
As shown in FIG. 2, the pipe 10 is connected to the mating member 11 with the flange 22 c of the pipe 10 being fastened to the bolt member 12.

図３に示すように、ボルト部材１２は、その軸部１２ｂの外周面１２ｆに、相手部材１１の筒部１１ｂの内周面１１ｆに形成されためねじ１１ｄとねじ結合するおねじ１２ｇが形成されている。
また、ボルト部材１２は、その突出部１２ｅの相手部材１１側の一端面１２ｈが、軸部１２ｂの端面１２ｊよりも頭部１２ａ側に位置する。なお、符号Ｌ１は突出部１２ｅの軸方向の長さ、Ｌ２は軸部１２ｂの端面１２ｊと突出部１２ｅの一端面１２ｈとの軸方向の段差量（距離）である。ここで、一端面１２ｈと端面１２ｊとは、同一平面上に形成されていても良い。この場合、Ｌ２＝０となる。 As shown in FIG. 3, the bolt member 12 is formed on the outer peripheral surface 12f of the shaft portion 12b with a male screw 12g that is formed on the inner peripheral surface 11f of the cylindrical portion 11b of the mating member 11 and is coupled to the screw 11d. ing.
Further, the bolt member 12 has an end surface 12h on the counterpart member 11 side of the protruding portion 12e positioned on the head 12a side with respect to the end surface 12j of the shaft portion 12b. Reference symbol L1 denotes the length of the protruding portion 12e in the axial direction, and L2 denotes an axial step amount (distance) between the end surface 12j of the shaft portion 12b and the one end surface 12h of the protruding portion 12e. Here, the one end face 12h and the end face 12j may be formed on the same plane. In this case, L2 = 0.

相手部材１１の筒部１１ｂ内の底壁１１ｃの底面１１ｇ上にはワッシャ１３が配置され、ワッシャ１３上には配管１０の管継手２２に設けられたフランジ２２ｃが当てられ、フランジ２２ｃが、ボルト部材１２の突出部１２ｅの一端面１２ｈに押し付けられた状態でボルト部材１２が相手部材１１の筒部１１ｂにねじ結合されている。
ボルト部材１２の継手挿通穴１２ｃの内径は、フランジ２２ｃの外径よりわずかに大きく、また、フランジ２２ｃとワッシャ１３とは、それらの外径が等しいか略等しい。
配管１０の相手部材１１への接続により、ホース本体２１のブレーキ液通路２１ａ、管継手２２内のブレーキ液通路２２ｄ、ワッシャ１３のブレーキ液孔１３ａ、相手部材１１のブレーキ液孔１１ｅが連通し、ブレーキ液が流通可能になる。
底壁１１ｃとワッシャ１３との間、及びワッシャ１３とフランジ２２ｃとの間は、シールされている。 A washer 13 is disposed on the bottom surface 11g of the bottom wall 11c in the cylindrical portion 11b of the mating member 11, and a flange 22c provided on the pipe joint 22 of the pipe 10 is applied on the washer 13, and the flange 22c is a bolt. The bolt member 12 is screwed to the cylindrical portion 11 b of the mating member 11 while being pressed against the one end surface 12 h of the protruding portion 12 e of the member 12.
The inner diameter of the joint insertion hole 12c of the bolt member 12 is slightly larger than the outer diameter of the flange 22c, and the outer diameters of the flange 22c and the washer 13 are equal or substantially equal.
By connecting the pipe 10 to the mating member 11, the brake fluid passage 21a of the hose body 21, the brake fluid passage 22d in the pipe joint 22, the brake fluid hole 13a of the washer 13, and the brake fluid hole 11e of the mating member 11 communicate with each other. Brake fluid can be distributed.
The space between the bottom wall 11c and the washer 13 and the space between the washer 13 and the flange 22c are sealed.

管継手２２の加締め部２２ａは、パイプ部２２ｂに連続するように設けられた内筒２２ｅと、内筒２２ｅから延びて内筒２２ｅを囲むように配置された外筒２２ｆとから一体に形成されている。
ホース本体２１は、内筒２２ｅと外筒２２ｆとの間に挿入され、外筒２２ｆが半径方向内側に圧縮されて、ホース本体２１が管継手２２に加締められている。 The caulking portion 22a of the pipe joint 22 is integrally formed from an inner cylinder 22e provided so as to be continuous with the pipe portion 22b and an outer cylinder 22f extending from the inner cylinder 22e and disposed so as to surround the inner cylinder 22e. Has been.
The hose body 21 is inserted between the inner cylinder 22e and the outer cylinder 22f, the outer cylinder 22f is compressed radially inward, and the hose body 21 is crimped to the pipe joint 22.

図４は、ボルト部材１２による管継手２２の締め付け状態を示す横断面図であり、図３のＩＶ−ＩＶ線断面に相当する図である。
管継手２２のフランジ２２ｃは、外形が円形で、ボルト部材１２の継手挿通穴１２ｃ、詳しくは、継手挿通穴１２ｃにおいて複数の突出部１２ｅが無い部分であって複数の突出部１２ｅに対して軸方向の相手部材１１側に位置するとともに、継手挿通穴１２ｃの端部を構成する端部挿通穴１２ｋ（図３も参照）に嵌合されている。
ボルト部材１２の突出部１２ｅは、継手挿通穴１２ｃの内周面１２ｄに周方向に角度θで等間隔に配置されている。このように、突出部１２ｅを周方向に等間隔に配置することで、複数の突出部１２ｅでフランジ２２ｃをより均一に押え付けることができ、シール性を高めることができる。
図４では、突出部１２ｅを３箇所成形したが、突出部１２ｅの数はこれに限らない。 FIG. 4 is a transverse cross-sectional view showing a tightened state of the pipe joint 22 by the bolt member 12, and corresponds to a cross section taken along line IV-IV in FIG.
The flange 22c of the pipe joint 22 has a circular outer shape, and is a joint insertion hole 12c of the bolt member 12, more specifically, a portion where the plurality of protrusions 12e are not provided in the joint insertion hole 12c, and the shafts with respect to the plurality of protrusions 12e. It is located on the opposite member 11 side in the direction and is fitted into an end insertion hole 12k (see also FIG. 3) that constitutes an end of the joint insertion hole 12c.
The protrusions 12e of the bolt member 12 are arranged at equal intervals at an angle θ in the circumferential direction on the inner peripheral surface 12d of the joint insertion hole 12c. Thus, by arranging the protrusions 12e at equal intervals in the circumferential direction, the flange 22c can be more uniformly pressed by the plurality of protrusions 12e, and the sealing performance can be improved.
In FIG. 4, the protrusions 12e are formed at three locations, but the number of protrusions 12e is not limited to this.

継手挿通穴１２ｃの内周面１２ｄにおいて、複数の突出部１２ｅが形成されていない部分、即ち、隣り合う突出部１２ｅ，１２ｅ間は、突出部１２ｅに対して凹部又は切欠きということができる。この部分をここで切欠き１２ｍとすると、配管１０を相手部材１１（図３参照）に接続する際には、隣り合う切欠き１２ｍ，１２ｍ間にフランジ２２ｃを挿入する。フランジ２２ｃの挿入要領については、図５で詳述する。 In the inner peripheral surface 12d of the joint insertion hole 12c, a portion where the plurality of protruding portions 12e are not formed, that is, a portion between the adjacent protruding portions 12e and 12e can be said to be a recess or a notch with respect to the protruding portion 12e. If this portion is defined as a notch 12m, a flange 22c is inserted between adjacent notches 12m and 12m when the pipe 10 is connected to the mating member 11 (see FIG. 3). The insertion procedure of the flange 22c will be described in detail with reference to FIG.

以上に述べた配管１０を相手部材１１に接続する接続要領を次に説明する。
図５は、配管１０を相手部材１１に接続する接続要領を示す作用図であり、図５（Ａ）〜図５（Ｆ）は、各接続工程を示す作用図である。
図５（Ａ）は、相手部材１１を示している。
図５（Ｂ）に示すように、相手部材１１における筒部１１ｂ内の底壁１１ｃ（図５（Ａ）参照）の底面１１ｇ（図５（Ａ）参照）にワッシャ１３を載せる。
図５（Ｃ）に示すように、相手部材１１の筒部１１ｂにボルト部材１２を、ボルト部材１２のおねじ１２ｇ（図３参照）が筒部１１ｂのめねじ１１ｄ（図５（Ｂ）参照）に少し掛かるようにねじ結合させる。 A connection procedure for connecting the pipe 10 described above to the mating member 11 will be described below.
FIG. 5 is an operation diagram illustrating a connection procedure for connecting the pipe 10 to the mating member 11, and FIGS. 5A to 5F are operation diagrams illustrating each connection process.
FIG. 5A shows the mating member 11.
As shown in FIG. 5 (B), the washer 13 is placed on the bottom surface 11g (see FIG. 5 (A)) of the bottom wall 11c (see FIG. 5 (A)) in the cylindrical portion 11b of the counterpart member 11.
As shown in FIG. 5C, the bolt member 12 is attached to the cylindrical portion 11b of the counterpart member 11, and the male screw 12g (see FIG. 3) of the bolt member 12 is the female screw 11d of the cylindrical portion 11b (see FIG. 5B). ) And screw it together so that it takes a little.

図５（Ｄ）に示すように、配管の管継手２２の先端部（パイプ部２２ｂ及びフランジ２２ｃ）をボルト部材１２の継手挿通穴１２ｃ内（詳しくは、隣り合う切欠き１２ｍ，１２ｍの間）に斜めに挿入し、矢印Ａに示すように、フランジ２２ｃをボルト部材１２の突出部１２ｅとワッシャ１３との間に移動させる。
そして、管継手２２を、ボルト部材１２の軸方向に延びるように、図５（Ｅ）に示す姿勢に直す。これにより、フランジ２２ｃは、複数の突出部１２ｅの全部とワッシャ１３との間に配置される。（即ち、フランジ２２ｃは、端部挿通穴１２ｋ内に配置される。） As shown in FIG. 5 (D), the tip end portion (pipe portion 22b and flange 22c) of the pipe joint 22 in the pipe is inside the joint insertion hole 12c of the bolt member 12 (specifically, between adjacent notches 12m and 12m). The flange 22c is moved between the protrusion 12e of the bolt member 12 and the washer 13 as shown by an arrow A in FIG.
And the pipe joint 22 is corrected to the attitude | position shown in FIG.5 (E) so that it may extend in the axial direction of the bolt member 12. FIG. Accordingly, the flange 22c is disposed between all of the plurality of protruding portions 12e and the washer 13. (That is, the flange 22c is disposed in the end insertion hole 12k.)

次に、図５（Ｅ）において、矢印Ｂに示すように、ボルト部材１２の頭部１２ａに工具を掛けて回し、ボルト部材１２を相手部材１１にねじ込む。この結果、ボルト部材１２は、筒部１１ｂとねじ結合しながら矢印Ｃに示すように相手部材１１側へ近づくように移動する。
そして、図５（Ｆ）に示すように、ボルト部材１２の各突出部１２ｅの一端面１２ｈがフランジ２２ｃに当り、フランジ２２ｃを締め付ける。これで、配管１０の相手部材１１への接続が完了する。 Next, in FIG. 5E, as indicated by an arrow B, a tool is put on the head 12 a of the bolt member 12 and turned to screw the bolt member 12 into the mating member 11. As a result, the bolt member 12 moves so as to approach the counterpart member 11 side as indicated by an arrow C while being screw-coupled to the cylindrical portion 11b.
Then, as shown in FIG. 5 (F), one end surface 12h of each projecting portion 12e of the bolt member 12 hits the flange 22c, and the flange 22c is tightened. This completes the connection of the pipe 10 to the mating member 11.

上記の図５（Ａ）〜（Ｆ）の配管接続方法は、従来の配管接続構造の接続方法とは異なる。
具体的には、従来は、穴あきボルトでパイプ保持金具に管継手のメガネ体を接続するというように、管継手に穴あきボルトを通す構造である。従って、管継手には、穴あきボルトを通すメガネ体が設けられ、穴あきボルトには、流体をメガネ体側とパイプ保持金具側との間で流通させる流体通路が形成される。即ち、穴あきボルト内を流体が流通する。このため、管継手及び穴あきボルトの構造が複雑になる。また、メガネ体の両端をシールする必要があるため、シール用のワッシャが複数必要になる。これらによって、コストアップとなる。更に、メガネ体や穴あきボルトの流体通路の形状や流体通路の断面積が制約を受けるため、圧力損失等の影響を受けやすくなる。 The pipe connection method shown in FIGS. 5A to 5F is different from the connection method of the conventional pipe connection structure.
Specifically, conventionally, the perforated bolt is passed through the pipe joint, such as connecting the spectacle body of the pipe joint to the pipe holding bracket with the perforated bolt. Therefore, the pipe joint is provided with a spectacle body through which the perforated bolt is passed, and the perforated bolt is formed with a fluid passage through which fluid flows between the spectacle body side and the pipe holding metal fitting side. That is, the fluid flows through the perforated bolt. For this reason, the structure of a pipe joint and a perforated bolt becomes complicated. Further, since it is necessary to seal both ends of the eyeglass body, a plurality of sealing washers are required. These increase costs. Furthermore, since the shape of the fluid passage of the spectacle body and the perforated bolt and the cross-sectional area of the fluid passage are restricted, they are easily affected by pressure loss and the like.

これに対して、本実施形態では、ボルト部材１２に管継手２２を通す構造である。従って、ボルト部材１２に通した管継手２２のブレーキ液通路２２ｄを相手部材１１のブレーキ液孔１１ｅ側に直接的に接続可能である。これにより、ブレーキ液通路のシールは、フランジ２２ｃと相手部材１１との間のみで行っている。また、ボルト部材１２の継手挿通穴１２ｃに形成された突出部１２ｅの開口端縁である一端面１２ｈでフランジ２２ｃを締め付けている。このため、管継手２２には単純な形状のフランジ２２ｃを設けるだけで済む。また、ボルト部材１２も、軸方向に継手挿通穴１２ｃを開け、継手挿通穴１２ｃの内周面に突出部１２ｅを形成するだけで良い。また、シール用のワッシャ１３も１枚で良い。更に、管継手２２側と相手部材１１側とを直接的に接続可能なので、配管接続構造がブレーキ液の流れや圧力伝達に影響を及ぼさない。 On the other hand, in this embodiment, the pipe joint 22 is passed through the bolt member 12. Therefore, the brake fluid passage 22d of the pipe joint 22 that passes through the bolt member 12 can be directly connected to the brake fluid hole 11e side of the counterpart member 11. As a result, the brake fluid passage is sealed only between the flange 22c and the counterpart member 11. Further, the flange 22c is fastened by one end surface 12h which is an opening edge of the protruding portion 12e formed in the joint insertion hole 12c of the bolt member 12. For this reason, it is only necessary to provide the pipe joint 22 with a flange 22c having a simple shape. Moreover, the bolt member 12 also has only to form the joint insertion hole 12c in the axial direction and form the protruding portion 12e on the inner peripheral surface of the joint insertion hole 12c. Further, only one sealing washer 13 may be used. Further, since the pipe joint 22 side and the mating member 11 side can be directly connected, the pipe connection structure does not affect the flow of brake fluid and the pressure transmission.

また、本実施形態のような、管継手のフランジを相手部材に接続する構造では、管継手にボルト部材やナット部材等の締結部材を外れないように組み込み、フランジを締結部材で締め込んで相手部材に接続する配管構造が従来から知られている。
この配管構造では、配管を交換する場合、締結部材も交換されるため、交換部品数が多くなる。これに対して、本実施形態の配管接続構造では、ボルト部材は、配管とは別体に構成されているため、交換部品数は少なくなる。 Further, in the structure in which the flange of the pipe joint is connected to the mating member as in this embodiment, the fastening member such as the bolt member or the nut member is incorporated in the pipe joint so as not to be removed, and the flange is tightened with the fastening member. A piping structure connected to a member is conventionally known.
In this piping structure, when the piping is replaced, the fastening member is also replaced, so that the number of replacement parts increases. On the other hand, in the pipe connection structure of the present embodiment, the bolt member is configured separately from the pipe, so the number of replacement parts is reduced.

＜第２実施形態＞
図６は、第２実施形態の配管接続構造の接続された状態を示す要部断面図である。図３に示した第１実施形態と同一構成については同一符号を付け、詳細説明は省略する。
配管１０のフランジ２２ｃは、ボルト部材１２の複数の突出部１２ｅに押し付けられた状態で、配管１０が相手部材３１に接続されている。
相手部材３１は、基部１１ａから一体に突出してボルト部材１２にねじ結合される筒部３１ｂと、筒部３１ｂの底を形成する底壁１１ｃとを備える。筒部３１ｂは、その内周面３１ｅの一部にめねじ３１ｄが形成されている。 Second Embodiment
FIG. 6 is a cross-sectional view of a main part showing a connected state of the pipe connection structure of the second embodiment. The same components as those in the first embodiment shown in FIG.
The pipe 10 is connected to the mating member 31 while the flange 22c of the pipe 10 is pressed against the plurality of protrusions 12e of the bolt member 12.
The mating member 31 includes a cylindrical portion 31b that protrudes integrally from the base portion 11a and is screwed to the bolt member 12, and a bottom wall 11c that forms the bottom of the cylindrical portion 31b. The cylindrical portion 31b has a female screw 31d formed on a part of its inner peripheral surface 31e.

相手部材３１は、めねじ３１ｄの形成範囲が、相手部材１１（図３参照）のめねじ１１ｄ（図３参照）の形成範囲と異なる。即ち、めねじ３１ｄは、その内周面３１ｅの底壁１１ｃ近傍には形成されておらず、めねじ１１ｄよりも相手部材３１の軸方向に短く形成されている。
底壁１１ｃ上には、底壁１１ｃとフランジ２２ｃとの間をシールするワッシャ３３が配置されている。ワッシャ３３は、その外径が、筒部３１ｂの内周面３１ｅの内径よりもわずかに小さく、フランジ２２ｃの外径よりも大きく、筒部３１ｂ内にワッシャ３３が嵌合している。このような構造により、ワッシャ３３を容易に位置決めすることができる。 In the mating member 31, the formation range of the female screw 31d is different from the formation range of the female screw 11d (see FIG. 3) of the mating member 11 (see FIG. 3). That is, the female screw 31d is not formed in the vicinity of the bottom wall 11c of the inner peripheral surface 31e, but is formed shorter in the axial direction of the mating member 31 than the female screw 11d.
A washer 33 that seals between the bottom wall 11c and the flange 22c is disposed on the bottom wall 11c. The washer 33 has an outer diameter slightly smaller than the inner diameter of the inner peripheral surface 31e of the cylindrical portion 31b and larger than the outer diameter of the flange 22c, and the washer 33 is fitted in the cylindrical portion 31b. With such a structure, the washer 33 can be easily positioned.

＜第３実施形態＞
図７は、第３実施形態の配管接続構造の接続された状態を示す要部断面図である。図３に示した第１実施形態と同一構成については同一符号を付け、詳細説明は省略する。
配管１０は、ナット部材４５で相手部材４１に接続されている。
相手部材４１は、基部１１ａから一体に突出してナット部材４５とねじ結合される筒部４１ｂと、筒部４１ｂの底を形成する底壁１１ｃとを備える。筒部４１ｂは、その外周面４１ｆにおねじ４１ｄが形成されている。
筒部４１ｂの内周面４１ｅには、ワッシャ１３及びフランジ２２ｃが嵌合されている。
ナット部材４５は、配管１０のパイプ部２２ｂ及びフランジ２２ｃを通すために開けられた継手挿通穴４５ｃと、継手挿通穴４５ｃに隣接して継手挿通穴４５ｃよりも内径が大きくされた大径穴４５ｊと、レンチ等の工具を掛ける六角形状の六角面４５ｆとが形成されている。 <Third Embodiment>
FIG. 7 is a cross-sectional view of a main part showing a connected state of the pipe connection structure of the third embodiment. The same components as those in the first embodiment shown in FIG.
The pipe 10 is connected to the mating member 41 with a nut member 45.
The mating member 41 includes a cylindrical portion 41b that protrudes integrally from the base portion 11a and is screwed to the nut member 45, and a bottom wall 11c that forms the bottom of the cylindrical portion 41b. As for the cylinder part 41b, the screw | thread 41d is formed in the outer peripheral surface 41f.
The washer 13 and the flange 22c are fitted to the inner peripheral surface 41e of the cylindrical portion 41b.
The nut member 45 includes a joint insertion hole 45c opened for passing the pipe portion 22b and the flange 22c of the pipe 10, and a large-diameter hole 45j adjacent to the joint insertion hole 45c and having an inner diameter larger than that of the joint insertion hole 45c. And a hexagonal hexagonal surface 45f on which a tool such as a wrench is hung.

継手挿通穴４５ｃは、その内周面４５ｇに、周方向に等間隔に位置するとともに半径方向内側に突出するとともにナット部材４５の軸方向に延びる複数の突出部４５ｅが形成されている。
大径穴４５ｊは、その内周面４５ｋにめねじ４５ｄが形成され、めねじ４５ｄは、相手部材４１のおねじ４１ｄにねじ結合されている。
相手部材４１の筒部４１ｂに対してナット部材４５を締付けたときには、突出部４５ｅが、その一端面４５ｈでフランジ２２ｃを押え付ける。
このように、ナット部材４５を使用することで、相手部材４１に対してワッシャ１３及びフランジ２２ｃを筒部４１ｂ内に容易に位置決めすることができ、配管接続時の作業性を向上させることができる。 The joint insertion hole 45c has a plurality of projecting portions 45e that are located at equal intervals in the circumferential direction and project inward in the radial direction and extend in the axial direction of the nut member 45 on the inner circumferential surface 45g.
The large-diameter hole 45j has a female screw 45d formed on the inner peripheral surface 45k thereof, and the female screw 45d is screwed to the male screw 41d of the mating member 41.
When the nut member 45 is tightened against the cylindrical portion 41b of the mating member 41, the projecting portion 45e presses the flange 22c with its one end face 45h.
Thus, by using the nut member 45, the washer 13 and the flange 22c can be easily positioned in the cylindrical portion 41b with respect to the counterpart member 41, and workability at the time of pipe connection can be improved. .

＜第４実施形態＞
図８は、第４実施形態の配管接続構造を示す説明図である。図８（Ａ）は配管１０のパイプ部２２ｂ及びフランジ２２ｃを示す管継手２２の横断面図、図８（Ｂ）はボルト部材５２を示す平面図、図８（Ｃ）はボルト部材５２でフランジ２２ｃを締め付けた状態を示す平面図である。なお、図４に示した第１実施形態と同一構成については同一符号を付け、詳細説明は省略する。
図８（Ａ），（Ｂ）に示すように、ボルト部材５２は、レンチ等が掛けられる六角形状の頭部５２ａと、頭部５２ａから一体に突出する軸部５２ｂとからなり、頭部５２ａ及び軸部５２ｂに、管継手２２のフランジ２２ｃを通す継手挿通穴５２ｃが開けられている。 <Fourth embodiment>
FIG. 8 is an explanatory view showing a pipe connection structure of the fourth embodiment. 8A is a cross-sectional view of the pipe joint 22 showing the pipe portion 22b and the flange 22c of the pipe 10, FIG. 8B is a plan view showing the bolt member 52, and FIG. It is a top view which shows the state which clamped 22c. In addition, the same code | symbol is attached | subjected about the same structure as 1st Embodiment shown in FIG. 4, and detailed description is abbreviate | omitted.
As shown in FIGS. 8A and 8B, the bolt member 52 includes a hexagonal head 52a on which a wrench or the like is hung, and a shaft portion 52b that integrally projects from the head 52a. And the joint insertion hole 52c which lets the flange 22c of the pipe joint 22 pass is opened in the shaft part 52b.

軸部５２ｂは、その外周面５２ｐに、相手部材１１にねじ結合されるおねじ１２ｇ（図３参照）が形成されている。
継手挿通穴５２ｃは、複数の切欠き５２ｄが周方向に等間隔に形成された小径穴５２ｅと、小径穴５２ｅよりも内径が大きくされるとともに小径穴５２ｅに隣接して軸部５２ｂの先端側に設けられた大径穴５２ｆとを備える。
対向する一対の切欠き５２ｄは、周方向に１８０°の間隔で配置されている。
大径穴５２ｆの内周面５２ｇは、その内径が、複数の切欠き５２ｄの底に接する仮想円の直径より大きいか等しい。
小径穴５２ｅの縁部には、隣り合う切欠き５２ｄ，５２ｄ間に、大径穴５２ｆよりも半径方向内側に突出する複数の突出部５２ｋが形成される。 The shaft portion 52b has a male screw 12g (see FIG. 3) formed on the outer peripheral surface 52p of the shaft portion 52b.
The joint insertion hole 52c includes a small-diameter hole 52e in which a plurality of notches 52d are formed at equal intervals in the circumferential direction, an inner diameter larger than that of the small-diameter hole 52e, and adjacent to the small-diameter hole 52e. And a large-diameter hole 52f provided in.
The pair of opposed notches 52d are arranged at an interval of 180 ° in the circumferential direction.
The inner peripheral surface 52g of the large-diameter hole 52f has an inner diameter that is greater than or equal to the diameter of a virtual circle that is in contact with the bottoms of the plurality of notches 52d.
A plurality of projecting portions 52k projecting radially inward from the large diameter hole 52f are formed between the adjacent notches 52d and 52d at the edge of the small diameter hole 52e.

配管１０をボルト部材５２で相手部材１１（図３参照）に接続するには、まず、図５（Ｄ）に示したのと同様に、配管１０の先端部を斜めにしてフランジ２２ｃをボルト部材５２の対向する一対の切欠き５２ｄ，５２ｄ間に挿入する。そして、図８（Ｃ）に示すように、フランジ２２ｃの全体を大径穴５２ｆ内に移動させる。そして、ボルト部材５２を締めつけ、ボルト部材５２の複数の突出部５２ｋの一端面５２ｈ（突出部５２ｋにおける紙面表裏方向の奥側の面）でフランジ２２ｃを押え付ける。
このように、ボルト部材５２に複数の切欠き５２ｄを設けることで、隣り合う切欠き５２ｄ，５２ｄ間に出来る複数の突出部５２ｋの面積を大きくすることができ、突出部５２ｋによりフランジ２２ｃを締め付ける面積を大きくすることができる。従って、フランジ２２ｃをより均一に押し付けることができ、シール性をより一層高めることができる。 In order to connect the pipe 10 to the mating member 11 (see FIG. 3) with the bolt member 52, first, as shown in FIG. 5D, the tip of the pipe 10 is inclined and the flange 22c is connected to the bolt member. 52 is inserted between a pair of notches 52d and 52d facing each other. Then, as shown in FIG. 8C, the entire flange 22c is moved into the large diameter hole 52f. Then, the bolt member 52 is tightened, and the flange 22c is pressed down by one end surface 52h of the plurality of projecting portions 52k of the bolt member 52 (the surface on the back side in the paper front and back direction of the projecting portion 52k).
As described above, by providing the bolt member 52 with the plurality of notches 52d, the area of the plurality of protrusions 52k formed between the adjacent notches 52d and 52d can be increased, and the flange 22c is tightened by the protrusions 52k. The area can be increased. Therefore, the flange 22c can be pressed more uniformly, and the sealing performance can be further enhanced.

以上の図８（Ａ）〜（Ｃ）に示したように、ボルト部材５２の継手挿通穴５２ｃに、フランジ２２ｃを挿通可能とする切欠き５２ｄを形成し、継手挿通穴５２ｃの切欠き５２ｄの周囲の一端面５２ｈでフランジ２２ｃを締め付けるので、フランジ２２ｃが切欠き５２ｄを通じて継手挿通穴５２ｃ内に挿入される構造であるため、予め、ボルト部材５２を配管１０に組付けておく必要がなく、配管作業の自由度を高めることができる。また、ボルト部材５２は、配管１０とは別体なので、ボルト部材５２又は配管１０を交換する際に、交換部品数を少なくすることができる。 As shown in FIGS. 8A to 8C, the notch 52d that allows the flange 22c to be inserted is formed in the joint insertion hole 52c of the bolt member 52, and the notch 52d of the joint insertion hole 52c is formed. Since the flange 22c is tightened at the peripheral end surface 52h, the flange 22c is inserted into the joint insertion hole 52c through the notch 52d. Therefore, there is no need to previously attach the bolt member 52 to the pipe 10, The degree of freedom of piping work can be increased. In addition, since the bolt member 52 is separate from the pipe 10, the number of replacement parts can be reduced when the bolt member 52 or the pipe 10 is replaced.

＜第５実施形態＞
図９は、第５実施形態の配管接続構造を示す説明図である。図９（Ａ）は配管６０のパイプ部２２ｂ及びフランジ６２ｃを示す管継手６２の横断面図、図９（Ｂ）はボルト部材１２を示す平面図、図９（Ｃ）はボルト部材１２でフランジ６２ｃを締め付けた状態を示す平面図である。なお、図４に示した第１実施形態と同一構成については同一符号を付け、詳細説明は省略する。
図９（Ａ），（Ｂ）に示すように、加締め部２２ａ（図３参照）と、パイプ部２２ｂと、パイプ部２２ｂの先端部に設けられたフランジ６２ｃとから管継手６２が一体に形成される。
フランジ６２ｃは、その外周縁に半径方向内側に窪んだ複数の切欠き６２ｄが周方向に等間隔で形成されている。 <Fifth Embodiment>
FIG. 9 is an explanatory diagram showing a pipe connection structure according to the fifth embodiment. 9A is a cross-sectional view of the pipe joint 62 showing the pipe portion 22b and the flange 62c of the pipe 60, FIG. 9B is a plan view showing the bolt member 12, and FIG. It is a top view which shows the state which clamped 62c. In addition, the same code | symbol is attached | subjected about the same structure as 1st Embodiment shown in FIG. 4, and detailed description is abbreviate | omitted.
As shown in FIGS. 9 (A) and 9 (B), a pipe joint 62 is integrally formed from a caulking portion 22a (see FIG. 3), a pipe portion 22b, and a flange 62c provided at the tip of the pipe portion 22b. It is formed.
The flange 62c has a plurality of notches 62d recessed radially inward at the outer peripheral edge thereof and formed at equal intervals in the circumferential direction.

複数の切欠き６２ｄは、ボルト部材１２の複数の突出部１２ｅのそれぞれに対応する位置に形成されている。
フランジ６２ｃの外径は、ボルト部材１２の継手挿通穴１２ｃの内径よりもわずかに小さく、フランジ６２ｃの各切欠き６２ｄを、ボルト部材１２の各突出部１２ｅにそれぞれ合わせることで、フランジ６２ｃをボルト部材１２の端部挿通穴１２ｋに挿入することができる。
フランジ６２ｃの隣り合う切欠き６２ｄ，６２ｄ間には、切欠き６２ｄよりも半径方向外側に突出する外方突出部６２ｅが出来る。 The plurality of notches 62d are formed at positions corresponding to the plurality of protrusions 12e of the bolt member 12, respectively.
The outer diameter of the flange 62c is slightly smaller than the inner diameter of the joint insertion hole 12c of the bolt member 12, and the notches 62d of the flange 62c are respectively aligned with the protrusions 12e of the bolt member 12, whereby the flange 62c is bolted. The member 12 can be inserted into the end insertion hole 12k.
Between the adjacent notches 62d and 62d of the flange 62c, an outward projecting portion 62e that projects radially outward from the notch 62d is formed.

図９（Ｃ）において、配管の管継手６２をボルト部材１２で相手部材１１（図３参照）に接続するには、上記したように、フランジ６２ｃの各切欠き６２ｄをボルト部材１２の各突出部１２ｅにそれぞれ合わせ、フランジ６２ｃを、ボルト部材１２の突出部１２ｅより奥側の端部挿通穴１２ｋまで挿入する。
そして、フランジ６２ｃに対してボルト部材１２を、角度α（例えば、α＝θ／２）だけ相対回転させるようにボルト部材１２を相手部材１１にねじ込む。これにより、図９（Ｃ）に示すように、ボルト部材１２の突出部１２ｅが、フランジ６２ｃの切欠き６２ｄの無い部分、即ち外方突出部６２ｅと軸方向で重なる。 In FIG. 9C, in order to connect the pipe joint 62 of the pipe to the mating member 11 (see FIG. 3) with the bolt member 12, each notch 62d of the flange 62c is connected to each protrusion of the bolt member 12, as described above. The flange 62c is inserted to the end insertion hole 12k on the back side from the projecting portion 12e of the bolt member 12 in accordance with each of the portions 12e.
Then, the bolt member 12 is screwed into the mating member 11 so that the bolt member 12 is rotated relative to the flange 62c by an angle α (for example, α = θ / 2). As a result, as shown in FIG. 9C, the projecting portion 12e of the bolt member 12 overlaps the portion of the flange 62c without the notch 62d, that is, the outward projecting portion 62e in the axial direction.

この状態を維持して、ボルト部材１２を更に締め込むことで、ボルト部材１２の突出部１２ｅの一端面１２ｈ（図３参照）でフランジ６２ｃが押え付けられ、接続が完了する。
このように、フランジ６２ｃに、ボルト部材１２の突出部１２ｅのそれぞれに対応する切欠き６２ｄを形成することで、フランジ６２ｃをボルト部材１２の継手挿通穴１２ｃ、詳しくは端部挿通穴１２ｋに容易に挿入することができ、配管接続時の作業性を向上させることができる。 By maintaining this state and further tightening the bolt member 12, the flange 62 c is pressed against the one end surface 12 h (see FIG. 3) of the protrusion 12 e of the bolt member 12, and the connection is completed.
Thus, by forming the notch 62d corresponding to each of the protrusions 12e of the bolt member 12 in the flange 62c, the flange 62c can be easily formed into the joint insertion hole 12c of the bolt member 12, more specifically, the end insertion hole 12k. It is possible to improve the workability at the time of pipe connection.

上記の図９（Ａ）〜（Ｃ）に示したように、フランジ６２ｃは、突出部１２ｅに対応する切欠き６２ｄが形成されているので、継手挿通穴１２ｃの突出部１２ｅにフランジ６２ｃの切欠き６２ｄを合わせてフランジ６２ｃを継手挿通穴１２ｃに挿入し、挿入後に突出部１２ｅと切欠き６２ｄとの周方向位置をずらすことで、突出部１２ｅでフランジ６２ｃの切欠き６２ｄ以外の部分を締め付けることができ、配管１０の接続を容易に行うことができる。 As shown in FIGS. 9A to 9C, since the notch 62d corresponding to the protruding portion 12e is formed in the flange 62c, the notch of the flange 62c is formed in the protruding portion 12e of the joint insertion hole 12c. The flange 62c is inserted into the joint insertion hole 12c with the notches 62d aligned, and after the insertion, the circumferential position between the protruding portion 12e and the notch 62d is shifted to tighten the portion other than the notch 62d of the flange 62c with the protruding portion 12e. It is possible to connect the pipe 10 easily.

以上の図１〜図４に示したように、配管１０を相手部材１１に着脱可能に接続することで、流体を配管１０と相手部材１１に形成された流体通路としてのブレーキ液孔１１ｅとの間で流通させる配管接続構造において、配管１０は、ホース本体２１と、先端にフランジ２２ｃが形成されたパイプ体であってホース本体２１の端部に取付けられた管継手２２とからなり、管継手２２のフランジ２２ｃを挿通させる挿通穴としての継手挿通穴１２ｃを備えるとともに相手部材１１にねじ結合される締結部材としてのボルト部材１２の継手挿通穴１２ｃの開口端縁としての一端面１２ｈで、フランジ２２ｃを相手部材１１側へ締め付けることで、フランジ２２ｃに形成された流体流通孔としてのブレーキ液通路２２ｄを相手部材１１のブレーキ液孔１１ｅと接続する。 As shown in FIGS. 1 to 4, by connecting the pipe 10 to the mating member 11 in a detachable manner, the fluid is connected to the pipe 10 and the brake fluid hole 11 e as a fluid passage formed in the mating member 11. In a pipe connection structure that circulates between the pipes, the pipe 10 is composed of a hose body 21 and a pipe joint 22 that is a pipe body having a flange 22c formed at the tip and attached to the end of the hose body 21. 22 is provided with a joint insertion hole 12c as an insertion hole through which the flange 22c of 22 is inserted, and at one end surface 12h as an opening edge of the joint insertion hole 12c of the bolt member 12 as a fastening member screwed to the mating member 11. By tightening 22c to the counterpart member 11 side, the brake fluid passage 22d as a fluid circulation hole formed in the flange 22c is made to be a brake fluid hole of the counterpart member 11. To connect with 1e.

この構成によれば、従来のような、内部にブレーキ液通路が形成された穴あきボルトや、穴あきボルトを通す挿通穴が形成されたメガネ体を有する管継手が不要になり、シール性を損なうことなく配管１０自体及び配管接続構造のコストを低減することができる。 According to this configuration, there is no need for a pipe joint having a perforated bolt with a brake fluid passage formed therein or a spectacle body with an insertion hole through which the perforated bolt is passed, as in the prior art. The cost of the pipe 10 itself and the pipe connection structure can be reduced without loss.

また、図３及び図４に示したように、ボルト部材１２の継手挿通穴１２ｃに、半径方向内側に突出する突出部１２ｅを設け、突出部１２ｅの一端面１２ｈでフランジ２２ｃを締め付けるので、フランジ２２ｃをボルト部材１２の継手挿通穴１２ｃから突出部１２ｅを避けて挿入することで、予め、ボルト部材１２を配管１０に組付けておく必要がなく、配管作業の自由度を高めることができる。また、ボルト部材１２は、配管１０とは別体なので、ボルト部材１２又は配管１０を交換する際に、交換部品数を少なくすることができる。 Further, as shown in FIGS. 3 and 4, the joint insertion hole 12c of the bolt member 12 is provided with a protruding portion 12e protruding inward in the radial direction, and the flange 22c is tightened by one end surface 12h of the protruding portion 12e. By inserting 22c from the joint insertion hole 12c of the bolt member 12 while avoiding the protruding portion 12e, it is not necessary to assemble the bolt member 12 to the pipe 10 in advance, and the degree of freedom of piping work can be increased. Moreover, since the bolt member 12 is a separate body from the pipe 10, the number of replacement parts can be reduced when the bolt member 12 or the pipe 10 is replaced.

また、図１及び図３に示したように、相手部材１１は、フランジ２２ｃにより押圧される押圧面としての底面１１ｇと、底面１１ｇに開けられたブレーキ液孔１１ｅと、底面１１ｇを囲むように形成された筒部１１ｂとを備え、筒部１１ｂにボルト部材１２がねじ結合されるので、フランジ２２ｃを筒部１１ｂ内に挿入する構造として、フランジ２２ｃを容易に位置決めすることができ、容易に配管１０の接続作業を行うことができる。
また、フランジ２２ｃと底面１１ｇとの間にシール用のワッシャ１３が設けられるので、１枚のシール用のワッシャ１３でシールすることができ、従来の配管接続構造に比べてワッシャ１３の個数を少なくすることができ、コストを低減することができる。 1 and 3, the mating member 11 surrounds the bottom surface 11g as a pressing surface pressed by the flange 22c, the brake fluid hole 11e opened in the bottom surface 11g, and the bottom surface 11g. Since the bolt member 12 is screwed to the cylindrical portion 11b, the flange 22c can be easily positioned as a structure for inserting the flange 22c into the cylindrical portion 11b. Connection work of the pipe 10 can be performed.
Further, since the sealing washer 13 is provided between the flange 22c and the bottom surface 11g, it can be sealed with one sealing washer 13, and the number of washers 13 is smaller than that of the conventional pipe connection structure. This can reduce the cost.

上述した実施形態は、あくまでも本発明の一態様を示すものであり、本発明の主旨を逸脱しない範囲で任意に変形及び応用が可能である。
図８（Ｂ）に示したボルト部材５２の複数の切欠き５２ｄに対応させて、配管のフランジに、複数の切欠き５２ｄのそれぞれに挿通可能な半径方向外側に突出する突出部をそれぞれ設け、各突出部を各切欠き５２ｄに合わせてフランジを大径穴５２ｆ内に挿入した後で、切欠き５２ｄと突出部との周方向の相対位置をずらし、ボルト部材５２をねじ込むことで、ボルト部材５２の突出部５２ｋの一端面５２ｈでフランジの突出部を締め付けるようにしても良い。 The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.
Corresponding to the plurality of notches 52d of the bolt member 52 shown in FIG. 8 (B), the flanges of the pipes are respectively provided with protrusions protruding outward in the radial direction that can be inserted through the plurality of notches 52d, After inserting the flanges into the large-diameter holes 52f with the protrusions aligned with the notches 52d, the relative positions in the circumferential direction of the notches 52d and the protrusions are shifted, and the bolt members 52 are screwed into the bolt members. The protruding portion of the flange may be tightened by the one end surface 52h of the protruding portion 52k of 52.

１０，６０配管
１１，３１，４１相手部材
１１ｂ，３１ｂ，４１ｂ筒部
１１ｅブレーキ液孔（流体通路）
１１ｇ底壁の底面（押圧面）
１２，５２ボルト部材（締結部材）
１２ｃ，４５ｃ，５２ｃ継手挿通穴（挿通穴）
１２ｅ，４５ｅ，５２ｋ突出部
１２ｈ，４５ｈ，５２ｈ突出部の一端面（開口端縁）
１３，３３ワッシャ
２１ホース本体
２２，６２管継手
２２ｃ，６２ｃフランジ
２２ｄ管継手内のブレーキ液通路（流体流通孔）
４５ナット部材（締結部材）
５２ｄ，６２ｄ切欠き 10, 60 Piping 11, 31, 41 Partner member 11b, 31b, 41b Tube portion 11e Brake fluid hole (fluid passage)
11g Bottom wall bottom (pressing surface)
12,52 Bolt member (fastening member)
12c, 45c, 52c Joint insertion hole (insertion hole)
12e, 45e, 52k Protruding part 12h, 45h, 52h One end face of the projecting part (opening edge)
13, 33 Washer 21 Hose body 22, 62 Fitting 22c, 62c Flange 22d Brake fluid passage (fluid flow hole) in the fitting
45 Nut member (fastening member)
52d, 62d Notch

Claims

配管（１０，６０）を相手部材（１１，３１，４１）に着脱可能に接続することで、流体を前記配管（１０，６０）と前記相手部材（１１，３１，４１）に形成された流体通路（１１ｅ）との間で流通させる配管接続構造において、
前記配管（１０，６０）は、ホース本体（２１）と、先端にフランジ（２２ｃ，６２ｃ）が形成されたパイプ体であって前記ホース本体（２１）の端部に取付けられた管継手（２２，６２）とからなり、
前記配管（１０，６０）は、前記相手部材（１１，３１，４１）に締結部材（１２，４５，５２）で接続され、
前記締結部材（１２，４５，５２）は、前記フランジ（２２ｃ，６２ｃ）を通す挿通穴（１２ｃ，４５ｃ，５２ｃ）と、前記相手部材（１１，３１，４１）にねじ結合されるねじ部（１２ｇ，４５ｄ）とを備え、
前記挿通穴（１２ｃ，４５ｃ，５２ｃ）の内周面には、周方向に間隔を開けて配置されるとともに半径方向内側に突出する複数の突出部（１２ｅ，４５ｅ，５２ｋ）と、周方向に隣り合う前記突出部（１２ｅ，４５ｅ，５２ｋ）間に位置する切欠き（１２ｍ，５２ｄ）とが形成され、
前記フランジ（２２ｃ，６２ｃ）を、対向する前記切欠き（１２ｍ，５２ｄ）間から斜めにして又は前記締結部材（１２，４５，５２）の軸方向に沿って、前記締結部材（１２，４５，５２）内に挿入し、
前記突出部（１２ｅ，４５ｅ，５２ｋ）の相手部材（１１，３１，４１）側の端面で前記相手部材（１１，３１，４１）側へ締め付けることで、前記フランジ（２２ｃ，６２ｃ）に形成された流体流通孔（２２ｄ）を相手部材（１１，３１，４１）の前記流体通路（１１ｅ）と接続することを特徴とする配管接続構造。 A fluid formed in the pipe (10, 60) and the mating member (11, 31, 41) by detachably connecting the pipe (10, 60) to the mating member (11, 31, 41). In the pipe connection structure that circulates between the passage (11e),
The pipes (10, 60) are a hose body (21) and a pipe body having a flange (22c, 62c) formed at the tip thereof, and a pipe joint (22) attached to the end of the hose body (21). 62)
The pipe (10, 60) is connected to the mating member (11, 31, 41) by a fastening member (12, 45, 52),
The fastening member (12, 45, 52) includes an insertion hole (12c, 45c, 52c) through which the flange (22c, 62c) is passed, and a threaded portion (thread, which is screwed to the mating member (11, 31, 41)). 12g, 45d)
A plurality of projecting portions (12e, 45e, 52k) which are arranged on the inner peripheral surface of the insertion holes (12c, 45c, 52c) at intervals in the circumferential direction and project radially inward, and in the circumferential direction A notch (12m, 52d) located between the adjacent protrusions (12e, 45e, 52k) is formed;
Before Symbol flange (22c, 62c) and, along the axial direction of the notch facing (12m, 52 d) in the oblique or the fastening member from between (12,45,52), said fastening member (12,45 , 52),
The flanges (22c, 62c) are formed by tightening the projecting portions (12e, 45e, 52k) to the mating member (11, 31, 41) side by the end surface on the mating member (11, 31, 41) side. A pipe connection structure characterized in that the fluid flow hole (22d) is connected to the fluid passage (11e) of the mating member (11, 31, 41).

前記フランジ（６２ｃ）は、その外周縁に半径方向内側に窪んだ複数の切欠き（６２ｄ）が周方向に間隔を開けて形成され、
前記複数の切欠き（６２ｄ）は、前記締結部材（１２）の複数の前記突出部（１２ｅ）のそれぞれに対応する位置に形成され、
前記フランジ（６２ｃ）の各切欠き（６２ｄ）を、前記締結部材（１２）の各突出部（１２ｅ）にそれぞれ合わせ、前記フランジ（６２ｃ）を前記締結部材（１２）に前記締結部材（１２）の軸方向に沿って挿入することを特徴とする請求項１に記載の配管接続構造。 The flange (62c) is formed with a plurality of notches (62d) recessed radially inward at an outer peripheral edge thereof, spaced apart in the circumferential direction,
The plurality of notches (62d) are formed at positions corresponding to the plurality of protrusions (12e) of the fastening member (12),
The notches (62d) of the flange (62c) are respectively aligned with the protrusions (12e) of the fastening member (12), and the flange (62c) is fitted to the fastening member (12). pipe connection structure according to claim 1, characterized that you inserted along the axial direction.

前記締結部材（１２）の前記突出部（１２ｅ）は、前記締結部材（１２）の軸方向に延び、前記突出部（１２ｅ）の前記相手部材（１１）側の一端面（１２ｈ）は、前記締結部材（１２）の全長の中間部に位置することを特徴とする請求項１又は請求項２に記載の配管接続構造。 The protrusion (12e) of the fastening member (12) extends in the axial direction of the fastening member (12), and the one end surface (12h) of the protrusion (12e) on the counterpart member (11) side is pipe connection structure according to claim 1 or claim 2 to a position in the middle of the entire length of the fastening member (12), characterized in Rukoto.

前記相手部材（１１，３１，４１）は、前記フランジ（２２ｃ，６２ｃ）により押圧される押圧面（１１ｇ）と、前記押圧面（１１ｇ）に開けられた前記流体通路（１１ｅ）と、前記押圧面（１１ｇ）を囲むように形成された筒部（１１ｂ，３１ｂ，４１ｂ）とを備え、前記筒部（１１ｂ，３１ｂ，４１ｂ）に前記締結部材（１２，４５，５２）がねじ結合されることを特徴とする請求項１乃至３のいずれか一項に記載の配管接続構造。 The counterpart member (11, 31, 41) includes a pressing surface (11g) pressed by the flange (22c, 62c), the fluid passage (11e) opened in the pressing surface (11g), and the pressing A cylindrical portion (11b, 31b, 41b) formed so as to surround the surface (11g), and the fastening member (12, 45, 52) is screwed to the cylindrical portion (11b, 31b, 41b). The pipe connection structure according to any one of claims 1 to 3 , wherein

前記フランジ（２２ｃ，６２ｃ）と前記押圧面（１１ｇ）との間にシール用のワッシャ（１３，３３）が設けられることを特徴とする請求項４に記載の配管接続構造。 The pipe connection structure according to claim 4 , wherein a washer (13, 33) for sealing is provided between the flange (22c, 62c) and the pressing surface (11g).