JP3361860B2 - Connecting device for bellows tube - Google Patents
Connecting device for bellows tubeInfo
- Publication number
- JP3361860B2 JP3361860B2 JP29448793A JP29448793A JP3361860B2 JP 3361860 B2 JP3361860 B2 JP 3361860B2 JP 29448793 A JP29448793 A JP 29448793A JP 29448793 A JP29448793 A JP 29448793A JP 3361860 B2 JP3361860 B2 JP 3361860B2
- Authority
- JP
- Japan
- Prior art keywords
- bellows tube
- pressing
- engaging member
- connection hole
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、先端側の1山あるい
は複数山を押し潰して蛇腹管を接続するようにした蛇腹
管用接続装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bellows tube connecting device in which one or more peaks on the tip side are crushed to connect a bellows tube.
【0002】[0002]
【従来の技術】従来、この種の接続装置は、例えば、実
公平2ー11679号公報、実開平3ー72189号公
報、特開平4ー125389号公報等において各種提案
されているが、いずれの接続装置も、次のような基本的
構成を有している。すなわち、装置本体の接続孔に挿入
された蛇腹管を、装置本体に螺合された押圧部材により
係合部材を介して押圧し、蛇腹管の先端部を接続孔の内
部に形成された当接部にシール部材を介して押し付け
る。蛇腹管をさらに押圧し、シール部材と係合部材との
間に位置する蛇腹管の2〜3山が押し潰されるまでシー
ル部材に押し付けることにより、蛇腹管を接続するもの
である。2. Description of the Related Art Conventionally, various connection devices of this type have been proposed in, for example, Japanese Utility Model Publication No. 2-11679, Japanese Utility Model Publication No. 3-72189, Japanese Patent Application Laid-Open No. 4-125389, and the like. The connection device also has the following basic configuration. That is, the bellows tube inserted into the connection hole of the device body is pressed by the pressing member screwed into the device body through the engaging member, and the tip of the bellows tube is abutted inside the connection hole. It is pressed against the part via the seal member. The bellows tube is connected by further pressing the bellows tube and pressing the bellows tube against the seal member until two or three crests of the bellows tube located between the seal member and the engagement member are crushed.
【0003】[0003]
【発明が解決しようとする課題】蛇腹管を押圧して押し
潰す際には、押圧部材と係合部材との間および係合部材
と蛇腹管との間の各接触圧が大きくなり、それらの間に
多大の摩擦抵抗が生じる。この結果、押圧部材をねじ込
むために回転させると、その回転が係合部材を介して蛇
腹管に伝達され、蛇腹管が回転することがある。蛇腹管
が回転すると、蛇腹管によってシール部材が傷付けら、
シール部材による気密性が低下するおそれがある。When the bellows tube is pressed and crushed, the contact pressures between the pressing member and the engaging member and between the engaging member and the bellows tube are increased, and the contact pressures between them are increased. A great deal of frictional resistance occurs between them. As a result, when the pressing member is rotated to be screwed in, the rotation may be transmitted to the bellows tube through the engaging member, and the bellows tube may rotate. When the bellows tube rotates, the bellows tube damages the seal member,
The airtightness of the seal member may be reduced.
【0004】[0004]
【課題を解決するための手段】この発明は、上記問題を
解決するためになされたもので、装置本体の接続孔に挿
入された蛇腹管を、装置本体に螺合された押圧部材をね
じ込むことにより、蛇腹管の谷部に嵌合した係合部材を
介して蛇腹管の先端側へ押圧し、蛇腹管の先端部を接続
孔の内部に形成された当接部にシール部材を介して押し
付け、シール部材と係合部材との間に位置する蛇腹管を
押し潰すようにした蛇腹管用接続装置において、上記押
圧部材を装置本体に螺合されたねじ部と、上記係合部材
に押圧接触し、上記係合部材を介して上記蛇腹管をその
先端側へ押圧する押圧部とに分割し、押圧部をねじ部に
対して相対回転可能としたことを特徴としている。Means for Solving the Problems] The present invention has been made to solve the above problems, it the pressing member a bellows tube which is inserted into the connection hole of the apparatus main body, is screwed into the apparatus main body
Flip By writing, to press the front end side of the bellows tube through the engagement member fitted to the valley portion of the bellows tube, the seal member contacting portion formed the distal end portion of the bellows tube into the connection hole In the connection device for a bellows tube, which is pressed through the bellows tube located between the seal member and the engagement member to be crushed, the pressing member is screwed to the device main body, and the engagement member is provided. It comes into pressure contact with the bellows tube through the engaging member.
It is characterized in that it is divided into a pressing portion that presses toward the tip side, and the pressing portion is rotatable relative to the screw portion.
【0005】[0005]
【作用】ねじ部を回転させてねじ込むと、押圧部が係合
部材を介して蛇腹管を押圧し、シール部材を介して当接
部に押し付ける。このとき、押圧部がねじ部に対して相
対回転自在であるから、ねじ部の回転が蛇腹管に伝達さ
れることがない。When the screw part is rotated and screwed in, the pressing part presses the bellows tube through the engaging member and presses it against the contact part through the sealing member. At this time, since the pressing portion is rotatable relative to the screw portion, the rotation of the screw portion is not transmitted to the bellows tube.
【0006】[0006]
【実施例】以下、この発明の実施例について図1〜図1
2を参照して説明する。図1〜図3はこの発明の一実施
例たる接続装置Aを示すものであり、符号1は装置本体
である。この装置本体1の内部には、その一端面(右端
面)から他端面(左端面)まで貫通する接続孔1aが形
成されている。この接続孔1aの内周面には、右端側か
ら左端側へ向かって順次、雌ねじ部1b、接続孔1aの
軸線と直交する係止面1c、雌ねじ部1bより小径の支
持孔部1d、接続孔1aの軸線と直交する当接面(当接
部)1eが形成されている。また、接続装置1の左端部
外周面には、接続装置1をガス栓、ガス器具等のガス機
器に接続するためのテーパねじ部1fが形成されてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.
2 will be described. 1 to 3 show a connection device A which is an embodiment of the present invention, and reference numeral 1 is a device body. Inside the device main body 1, a connection hole 1a is formed which penetrates from one end surface (right end surface) to the other end surface (left end surface) thereof. On the inner peripheral surface of the connection hole 1a, from the right end side to the left end side, a female screw portion 1b, a locking surface 1c orthogonal to the axis of the connection hole 1a, a support hole portion 1d having a smaller diameter than the female screw portion 1b, and a connection A contact surface (contact portion) 1e that is orthogonal to the axis of the hole 1a is formed. Further, on the outer peripheral surface of the left end portion of the connection device 1, there is formed a taper screw portion 1f for connecting the connection device 1 to a gas device such as a gas plug or a gas appliance.
【0007】上記支持孔部1dには、筒状をなす支持部
材2が摺動自在に嵌合されている。この支持部材2の右
端部外周には、小径部2aが形成されており、小径部2
aの右端部には環状の小凸部2bが形成されている。A cylindrical support member 2 is slidably fitted in the support hole 1d. A small diameter portion 2a is formed on the outer periphery of the right end portion of the support member 2, and the small diameter portion 2
An annular small convex portion 2b is formed at the right end of a.
【0008】小径部2aには、係合部材3が装着されて
いる。この係合部材3は、両端が結合されることにより
リング状をなすコイル材3aと、このコイル材3aの内
部に挿通された略C字状をなす芯材3bとからなるもの
であり、全体としては拡縮径可能であるが、その線径は
ほとんど変化しないような剛性を有している。係合部材
3は、小径部2aに拡径した状態で移動可能に装着され
ている。その一方、係合部材3は、係止面1cに突き当
たることにより、左方への移動が規制されている。した
がって、支持部材2が左方へ移動すると、係合部材3は
相対的に右方へ移動し、小凸部2bを乗り越えて支持部
材2から外れる。An engaging member 3 is attached to the small diameter portion 2a. The engagement member 3 is composed of a coil material 3a having a ring shape by connecting both ends and a substantially C-shaped core material 3b inserted into the coil material 3a. Although the diameter can be expanded and contracted, the wire diameter has such a rigidity that it hardly changes. The engagement member 3 is movably attached to the small diameter portion 2a in a state where the diameter is expanded. On the other hand, the engagement member 3 is restricted from moving to the left by hitting the locking surface 1c. Therefore, when the support member 2 moves to the left, the engagement member 3 relatively moves to the right, gets over the small convex portion 2b, and disengages from the support member 2.
【0009】係合部材3は、支持部材2から外れるとそ
れ自体の弾性力によって縮径し、フレキシブル管4の蛇
腹管4Aの谷部4aに嵌まり込むようになっている(図
3(A)参照)。谷部4aに嵌まり込ん状態において
は、係合部材3の外周側のほぼ半分が蛇腹管4Aから突
出するよう、係合部材3の線径が設定されている。When the engagement member 3 is disengaged from the support member 2, the engagement member 3 is reduced in diameter by its own elastic force and fits into the valley portion 4a of the bellows pipe 4A of the flexible pipe 4 (see FIG. )reference). The wire diameter of the engaging member 3 is set so that approximately half of the outer peripheral side of the engaging member 3 protrudes from the bellows tube 4A when fitted in the valley 4a.
【0010】また、支持部材2の左端部内周には、シー
ル部材5が装着固定されている。このシール部材5は、
硬質ゴムあるいは合成繊維を適宜の結合剤によって結合
した部材等からなるものであり、リング状に形成されて
いる。シール部材5の内径は、蛇腹管4Aの谷部4aの
内径とほぼ同径か、若干小径になっており、シール部材
5の外径は蛇腹管4Aの山部4bの外径より若干大径に
なっている。A seal member 5 is attached and fixed to the inner periphery of the left end portion of the support member 2. This seal member 5 is
It is made of a member in which hard rubber or synthetic fiber is bonded by an appropriate binder, and is formed in a ring shape. The inner diameter of the seal member 5 is substantially the same as or slightly smaller than the inner diameter of the valley portion 4a of the bellows tube 4A, and the outer diameter of the seal member 5 is slightly larger than the outer diameter of the crest portion 4b of the bellows tube 4A. It has become.
【0011】上記接続孔1aの雌ねじ部1bには、筒状
をなす押圧部材6が螺合されている。押圧部材6は、ね
じ部6Aと押圧部6Bとから構成されている。ねじ部6
Aの左端部外周面には、雄ねじ部6aが形成されてい
る。この雄ねじ部6aは、雌ねじ部1bに螺合されてい
る。したがって、ねじ部6Aを回転させると、ねじ部6
A、ひいては押圧部材全体が左方または右方へ移動す
る。A cylindrical pressing member 6 is screwed into the female screw portion 1b of the connection hole 1a. The pressing member 6 is composed of a screw portion 6A and a pressing portion 6B. Screw part 6
On the outer peripheral surface of the left end portion of A, a male screw portion 6a is formed. The male screw portion 6a is screwed into the female screw portion 1b. Therefore, when the screw portion 6A is rotated, the screw portion 6A
A, by extension, the entire pressing member moves leftward or rightward.
【0012】ただし、図2に示すように、ねじ部6Aの
外周面と接続装置1の内周面とには、環状溝6b,1g
がそれぞれ形成されており、環状溝6b,1gには、仮
止めリング7の内周側の半分と外周側の半分とがそれぞ
れ嵌まり込んでいる。これによって、ねじ部6A(押圧
部材6)が容易に回転して移動するのを阻止するように
なっている。その一方、環状溝1gの両側面は、テーパ
面状をなしており、しかも仮止めリング7はC字状をな
して縮径可能になっている。したがって、ねじ部6Aを
強制的に回転させて移動させると、仮止めリング7が縮
径してその全体が環状溝6b内に入り込む。この状態で
はねじ部6Aが容易に回転可能かつ移動可能になる。However, as shown in FIG. 2, annular grooves 6b and 1g are formed on the outer peripheral surface of the screw portion 6A and the inner peripheral surface of the connecting device 1.
Are formed, and the inner circumferential side half and the outer circumferential side half of the temporary fixing ring 7 are fitted in the annular grooves 6b and 1g, respectively. This prevents the screw portion 6A (pressing member 6) from easily rotating and moving. On the other hand, both side surfaces of the annular groove 1g are tapered, and the temporary fixing ring 7 is C-shaped and can be reduced in diameter. Therefore, when the screw portion 6A is forcibly rotated and moved, the diameter of the temporary fixing ring 7 is reduced and the whole thereof enters the annular groove 6b. In this state, the screw portion 6A can be easily rotated and moved.
【0013】なお、押圧部材6が容易に移動するのを仮
止めリング7によって阻止するようにしたのは、次の二
つの理由からである。一つの理由は、押圧部材6が装置
本体1から抜け出るの防止するためである。他の一つの
理由は、押圧部材6が左方へ移動して、例えばその先端
部が図1に示す係合部材3の内側まで移動すると、係合
部材3が支持部材2から外れても押圧部材6の先端部に
嵌合してしまい、蛇腹管4Aに嵌まり込むことができな
くなってしまう。このような事態を未然に防止するため
である。Incidentally, the temporary movement of the pressing member 6 is prevented by the temporary fixing ring 7 for the following two reasons. One reason is to prevent the pressing member 6 from slipping out of the apparatus main body 1. Another reason is that when the pressing member 6 moves to the left and the tip portion thereof moves to the inside of the engaging member 3 shown in FIG. The member 6 is fitted into the tip portion of the member 6 and cannot be fitted into the bellows tube 4A. This is to prevent such a situation.
【0014】ねじ部6Aの右端部内周面には、シールリ
ング8が装着されている。このシールリング8は、フレ
キシブル管4と押圧部材6との間から雨水が侵入するの
を防止するためのものであり、フレキシブル管4の外被
4Bに押圧接触するようになっている。また、ねじ部6
Aの中間部外周には、Oリング9が装着されている。こ
のOリング9は、図3(C)に示すように、蛇腹管4A
の接続が完了した時点では、ねじ部6Aと装置本体1と
の間に嵌まり込み、それらの間から雨水が装置本体1の
内部に侵入するのを防止する。A seal ring 8 is attached to the inner peripheral surface of the right end portion of the screw portion 6A. The seal ring 8 is for preventing rainwater from entering between the flexible tube 4 and the pressing member 6, and is configured to press-contact the outer cover 4B of the flexible tube 4. Also, the screw part 6
An O-ring 9 is attached to the outer periphery of the intermediate portion of A. This O-ring 9 is, as shown in FIG. 3C, a bellows tube 4A.
When the connection is completed, it is fitted between the screw portion 6A and the device body 1 to prevent rainwater from entering the inside of the device body 1 from between them.
【0015】一方、上記押圧部6Bは、その右端部がね
じ部6Aの左端部内周面に形成された環状溝6cに嵌ま
り込んでいる。この場合、押圧部6Bの外径は環状溝6
cの内径とほぼ同一か若干小径になっており、しかも押
圧部6bと環状溝6cとの互いの接触部には、グリース
等の潤滑油が塗布されるか、あるいは接触部の一方に潤
滑性に富む樹脂がコーティングされている。これによっ
て、押圧部6Bがねじ部6Aに回動自在に連結されてい
る。なお、符号10は、押圧部6Bが環状溝6cから抜
け出るのを防止するための止め輪である。On the other hand, the pressing portion 6B has a right end portion fitted into an annular groove 6c formed on the inner peripheral surface of the left end portion of the screw portion 6A. In this case, the outer diameter of the pressing portion 6B is the annular groove 6
The inner diameter of c is substantially the same as or slightly smaller than that of the inner diameter of c. Moreover, lubricating oil such as grease is applied to the contact portion between the pressing portion 6b and the annular groove 6c, or lubricity is provided on one of the contact portions. Coated with rich resin. As a result, the pressing portion 6B is rotatably connected to the screw portion 6A. Reference numeral 10 is a retaining ring for preventing the pressing portion 6B from coming out of the annular groove 6c.
【0016】また、押圧部6Bの内径は、ねじ部6Aの
内径よりも小径になっており、蛇腹管4Aの外径よりも
若干大径になっている。したがって、押圧部材6の内部
には、蛇腹管4Aが挿通可能である。また、押圧部6B
の先端部には、テーパ面6dが形成されている。このテ
ーパ面6dは、押圧部材6が左方へ移動したときに、係
合部材3に突き当たり、係合部材3を介して蛇腹管4A
を左方へ押圧するものである。勿論、テーパ面6dに代
えて、接続孔1aの軸線と直交するような平面にしても
よい。The inner diameter of the pressing portion 6B is smaller than the inner diameter of the threaded portion 6A and slightly larger than the outer diameter of the bellows tube 4A. Therefore, the bellows tube 4A can be inserted into the inside of the pressing member 6. Also, the pressing portion 6B
A tapered surface 6d is formed at the tip of the. When the pressing member 6 moves to the left, the tapered surface 6d hits the engaging member 3 and the bellows tube 4A via the engaging member 3.
Is pressed to the left. Of course, the tapered surface 6d may be replaced with a flat surface orthogonal to the axis of the connection hole 1a.
【0017】次に、上記構成の蛇腹管用接続装置Aにフ
レキシブル管4の蛇腹管4Aを接続する場合について図
3を参照して説明する。なお、接続に際しては、蛇腹管
4Aを接続孔1aに挿入してその先端がシール部材5に
突き当たったとき、外被4Bの先端が押圧部材6のほぼ
中間部に位置するよう、外被4Bの先端部を所定の長さ
にわたって予め取り除いておく。また、蛇腹管4Aにつ
いては、その谷部4aが先端に位置するように切断して
おく。この場合、谷部4aのうちの最も小径の部分が先
端に位置するようにするのが望ましい。Next, a case where the bellows tube 4A of the flexible tube 4 is connected to the bellows tube connecting device A having the above-described structure will be described with reference to FIG. At the time of connection, when the bellows tube 4A is inserted into the connection hole 1a and the tip thereof abuts the seal member 5, the tip of the jacket 4B is positioned substantially in the middle of the pressing member 6 so that the jacket 4B is placed. The tip is preliminarily removed over a predetermined length. Further, the bellows tube 4A is cut so that the valley portion 4a is located at the tip. In this case, it is desirable that the smallest diameter portion of the valley portion 4a be located at the tip.
【0018】上記のように準備したら、図3(A)に示
すように、蛇腹管4Aを押圧部材6を通して接続孔1a
内に挿入する。蛇腹管4Aの先端がシール部材5に突き
当たった後、さらに蛇腹管4Aを挿入すると、支持部材
2がシール部材5を介して左方へ移動させられる。この
とき、係合部材3は、係止面1cによって左方への移動
を阻止されているので、支持部材2に対して相対的に右
方へ移動し、小凸部2bを乗り越えて支持部材2から外
れる。そして、係合部材3はそれ自体の弾性力によって
縮径し、蛇腹管4Aの谷部4aに嵌まり込む。係合部材
3が支持部材2から外れて谷部4aに嵌まり込んだこと
は、係合部材3が小凸部2bを乗り越える際に蛇腹管4
Aの挿入抵抗が増大すること、係合部材3が縮径して蛇
腹管4Aに突き当たるときの衝撃音、およびそのときの
感触等によって分かる。After the above-mentioned preparation, as shown in FIG. 3 (A), the bellows tube 4A is passed through the pressing member 6 and the connection hole 1a.
Insert inside. When the bellows tube 4A is further inserted after the tip of the bellows tube 4A hits the seal member 5, the support member 2 is moved to the left through the seal member 5. At this time, since the engaging member 3 is prevented from moving to the left by the locking surface 1c, the engaging member 3 moves to the right relative to the supporting member 2 and rides over the small convex portion 2b, so that the supporting member 3 moves. It deviates from 2. Then, the engagement member 3 contracts in diameter by its own elastic force and fits into the valley portion 4a of the bellows tube 4A. The fact that the engaging member 3 is disengaged from the support member 2 and fitted into the valley portion 4a means that the bellows tube 4 is formed when the engaging member 3 gets over the small convex portion 2b.
It can be seen from an increase in the insertion resistance of A, an impact sound when the engagement member 3 has a reduced diameter and strikes the bellows tube 4A, and a feel at that time.
【0019】なお、この実施例の場合、係合部材3は蛇
腹管4Aの先端から2山分だけ後方の谷部4aに嵌まり
込むようになっているが、1山分あるいは3山分以上後
方の谷部4aに嵌まり込むようにしてもよい。これは、
係合部材3とシール部材5との間の距離によって適宜設
定することができる。また、この実施例では、蛇腹管4
がシール部材5を介して当接部1eに突き当たるまで蛇
腹管4Aを挿入しているが、係合部材3が蛇腹管4Aに
嵌まり込んだら蛇腹管4Aの挿入を止めてもよい。In the case of this embodiment, the engaging member 3 is adapted to fit into the valley portion 4a behind the bellows tube 4A by two peaks, but one peak or three peaks or more. You may make it fit in the trough part 4a of the back. this is,
It can be appropriately set depending on the distance between the engagement member 3 and the seal member 5. Further, in this embodiment, the bellows tube 4 is
Although the bellows tube 4A is inserted until it abuts the contact portion 1e via the seal member 5, the insertion of the bellows tube 4A may be stopped when the engagement member 3 is fitted into the bellows tube 4A.
【0020】次に、ねじ部6Aを回転させて左方へ移動
させる。すると、それに伴って押圧部6Bが左方へ移動
し、そのテーパ面6dが係合部材3に突き当たる(図3
(B)参照)。そして、係合部材3を介して蛇腹管4A
を左方へ押し、その先端部をシール部材5を介して当接
面1eに押し付ける。ねじ部6Aをさらに回転させて同
方向へ移動させると、係合部材3とシール部材5との間
の蛇腹管4Aが押し潰される。これによって、蛇腹管4
Aが接続装置Aに強固に、かつ気密に接続される(図3
(C)参照)。Next, the screw portion 6A is rotated to move it to the left. Then, the pressing portion 6B moves to the left accordingly, and the tapered surface 6d abuts on the engaging member 3 (FIG. 3).
(See (B)). Then, the bellows tube 4A via the engagement member 3
Is pushed to the left, and its tip is pressed against the contact surface 1e via the seal member 5. When the screw portion 6A is further rotated and moved in the same direction, the bellows tube 4A between the engaging member 3 and the seal member 5 is crushed. By this, the bellows tube 4
A is firmly and airtightly connected to the connection device A (see FIG. 3).
(See (C)).
【0021】ここで、上記の接続装置Aにおいては、押
圧部材6を互いに別体であるねじ部6Aと押圧部6Bと
から構成し、しかも押圧部6Bをねじ部6Aに回動自在
に連結しているので、蛇腹管4Aの押し潰し時に、ねじ
部6Aを回転させたとしても、押圧部6Bがねじ部6A
に対して相対的に逆方向へ回転するだけであり、蛇腹管
4Aが回転することはない。よって、シール部材5が蛇
腹管4Aによって傷つけられるのを防止することができ
る。Here, in the connection device A, the pressing member 6 is composed of the screw portion 6A and the pressing portion 6B which are separate bodies, and the pressing portion 6B is rotatably connected to the screw portion 6A. Therefore, even when the screw portion 6A is rotated when the bellows tube 4A is crushed, the pressing portion 6B is
However, the bellows tube 4A does not rotate. Therefore, it is possible to prevent the seal member 5 from being damaged by the bellows tube 4A.
【0022】次に、この発明の他の実施例について説明
する。なお、以下の実施例においては、上記実施例と異
なる部分についてのみ説明することとし、上記実施例と
同様な部分には同一符号を付してその説明を省略する。Next, another embodiment of the present invention will be described. In the following embodiments, only parts different from the above embodiments will be described, and the same parts as those in the above embodiments are designated by the same reference numerals and the description thereof will be omitted.
【0023】図4に示す接続装置Bにおいては、上記の
実施例における止め輪10が用いられておらず、ねじ部
6Aと押圧部6Bとが互いに分離可能になっている。し
かも、仮止めリング7は、ねじ部6Aと装置本体1との
間でなく、押圧部6Bと装置本体1との間に設けられて
いる。したがって、この実施例においては、ねじ部6A
が右方へは容易に移動可能であるが、押圧部材6全体が
左方へ容易に移動することは阻止することができる。な
お、この実施例では仮止めリング7が断面が円形になっ
ている。In the connecting device B shown in FIG. 4, the retaining ring 10 in the above embodiment is not used, and the screw portion 6A and the pressing portion 6B can be separated from each other. Moreover, the temporary fixing ring 7 is provided not between the screw portion 6A and the apparatus body 1 but between the pressing portion 6B and the apparatus body 1. Therefore, in this embodiment, the threaded portion 6A
Can be easily moved to the right, but it is possible to prevent the entire pressing member 6 from easily moving to the left. In this embodiment, the temporary fixing ring 7 has a circular cross section.
【0024】図5に示す接続装置Cは、シール部材5を
当接面1eに固着したものであり、シール部材5の内径
は上記実施例のものと同様であるが、外径は蛇腹管4a
の外径より若干小さくなっている。また、支持部材2に
は、環状突出部2cが形成されている。この環状突出部
2cの内径は、シール部材5の外径より若干大きく、蛇
腹管4Aの外径より若干小さくなっている。したがっ
て、蛇腹管4Aを挿入すると、蛇腹管4Aの最も先端側
の山部4bが環状突出部2cに突き当たり、これによっ
て支持部材2が移動させられるようになっている。ま
た、突き当たった状態においては、蛇腹管4Aの先端が
支持部材2から左方へ突出しており、これによって蛇腹
管4Aの先端がシール部材5に確実に接触する。In the connecting device C shown in FIG. 5, the seal member 5 is fixed to the contact surface 1e, and the inner diameter of the seal member 5 is the same as that of the above-mentioned embodiment, but the outer diameter is the bellows tube 4a.
Is slightly smaller than the outer diameter of. Further, the support member 2 is formed with an annular protrusion 2c. The inner diameter of the annular protruding portion 2c is slightly larger than the outer diameter of the seal member 5 and slightly smaller than the outer diameter of the bellows tube 4A. Therefore, when the bellows tube 4A is inserted, the peak portion 4b on the most distal end side of the bellows tube 4A abuts on the annular protrusion 2c, whereby the support member 2 is moved. In addition, in the abutted state, the tip of the bellows tube 4A projects leftward from the support member 2, whereby the tip of the bellows tube 4A surely contacts the seal member 5.
【0025】また、この接続装置Cにおいては、仮止め
リング7に代えて、装置本体1と押圧部材6との間に位
置決めリング11が装着されている。この位置決めリン
グ11は、一部が切り欠かかれることによって拡縮径可
能になっており、その切欠き部を通して押圧部材6から
外すことが可能である。したがって、位置決めリング1
1が装着された状態では、押圧部材6の左方への移動が
阻止されるが、蛇腹管4Aの挿入後には、位置決めリン
グ11を外すことによって押圧部材6を左方へ移動させ
ることができる。Further, in this connecting device C, a positioning ring 11 is mounted between the device body 1 and the pressing member 6 instead of the temporary fixing ring 7. The positioning ring 11 can be expanded / contracted by cutting a part thereof, and can be detached from the pressing member 6 through the notch. Therefore, the positioning ring 1
Although the pressing member 6 is prevented from moving to the left in the state in which the pressing member 6 is mounted, the pressing member 6 can be moved to the left by removing the positioning ring 11 after inserting the bellows tube 4A. .
【0026】図6に示す接続装置Dは、押圧部6Bに代
えて押圧部6B1を用いるようにしたものである。すな
わち、ねじ部6Aの先端部内周には、ストレート孔部6
eが形成されている。このストレート孔6eの奥側に
は、押圧部6B1が装着されている。押圧部6B1は、図
7に示すように、円形の座金状をなしており、その外周
面には複数の小突起6fが周方向に等間隔をもって配置
形成されている。そして、図8に示すように、この小突
起6fがストレート孔部6eの奥側に形成された環状の
係止溝6gに入り込むことによって抜け止めされてい
る。ストレート孔部6eと押圧部6B′との互いの接触
部、例えばストレート孔部6bの底面と押圧部6B1の
側面には、グリース等の潤滑油の塗布またはコーティン
グ等が施されており、これによって押圧部6B1がねじ
部6Aに対して回転自在になっている。The connecting device D shown in FIG. 6 uses a pressing portion 6B 1 instead of the pressing portion 6B. That is, the straight hole portion 6 is provided on the inner circumference of the tip portion of the screw portion 6A.
e is formed. A pressing portion 6B 1 is mounted on the inner side of the straight hole 6e. As shown in FIG. 7, the pressing portion 6B 1 has a circular washer shape, and a plurality of small projections 6f are formed on the outer peripheral surface thereof at equal intervals in the circumferential direction. Then, as shown in FIG. 8, the small protrusion 6f is prevented from coming off by entering into the annular locking groove 6g formed on the inner side of the straight hole portion 6e. Mutual contact portion between the straight hole portion 6e and the pressing part 6B ', the bottom and side surfaces of the pressing portion 6B 1, for example, straight hole portion 6b, coating or coating, and the like of the lubricant such as grease has been subjected, which The pressing portion 6B 1 is thereby rotatable with respect to the screw portion 6A.
【0027】また、上記ストレート孔部6eの外側の端
部には、外側に向かって拡径するテーパ面6hが形成さ
れている。このテーパ面6hの最小径はストレート孔部
6eの内径と同一になっており、両者は蛇腹管4Aの谷
部4aに嵌まり込んだ係合部材3の外径より若干小径に
なっている。また、当接面1eには、支持部材2が左方
へ移動したときに、支持部材2が入り込む環状溝1hが
形成されている。さらに、係合部材3は蛇腹管4Aの先
端から1山分だけ後方の谷部4aに嵌まり込むようにな
っている。A taper surface 6h is formed at the outer end of the straight hole 6e so that the diameter of the taper surface 6h increases outward. The minimum diameter of the tapered surface 6h is the same as the inner diameter of the straight hole portion 6e, and both are slightly smaller than the outer diameter of the engaging member 3 fitted in the valley portion 4a of the bellows tube 4A. Further, the contact surface 1e is formed with an annular groove 1h into which the support member 2 enters when the support member 2 moves leftward. Further, the engaging member 3 is adapted to fit into the valley portion 4a at the rear by one peak from the tip of the bellows tube 4A.
【0028】上記構成の接続装置Dに蛇腹管4Aを接続
する場合には、図9(A)に示すように、係合部材3が
支持部材2から外れて蛇腹管4Aの谷部4aに嵌まり込
むまで蛇腹管4Aを接続孔1aに挿入する。次に、ねじ
部6Aを左方へ移動させ、そのテーパ面6hを係合部材
3に突き当てる。その後、ねじ部6Aをさらに左方へ移
動させると、係合部材3がテーパ面6hによって縮径さ
せられるとともに、ストレート孔部6e内に嵌まり込ん
で縮径状態に維持される。係合部材3が縮径すると、そ
れに伴って蛇腹管4の谷部4aが弾性変形し、谷部4a
のほぼ全体が係合部材3の内周部分に密接するようにな
る。このようにしたのは次の理由による。When connecting the bellows tube 4A to the connecting device D having the above structure, as shown in FIG. 9A, the engaging member 3 is disengaged from the support member 2 and fitted into the valley portion 4a of the bellows tube 4A. The bellows tube 4A is inserted into the connection hole 1a until it is fitted. Next, the screw portion 6A is moved to the left, and the taper surface 6h is abutted against the engaging member 3. Then, when the screw portion 6A is further moved to the left, the engagement member 3 is reduced in diameter by the tapered surface 6h, and is fitted in the straight hole portion 6e to be maintained in a reduced diameter state. When the diameter of the engaging member 3 is reduced, the valley portion 4a of the bellows tube 4 is elastically deformed accordingly, and the valley portion 4a is formed.
Almost comes into close contact with the inner peripheral portion of the engaging member 3. The reason for doing this is as follows.
【0029】すなわち、蛇腹管4Aの谷部4aの曲率半
径は、係合部材3の線径に比して寸法誤差が大きい。谷
部4aの曲率半径が大きめに形成された場合には、係合
部材3が谷部4aに深く入り込み、谷部4aからの係合
部材3の突出量が小さくなってしまう。逆に、谷部4a
の曲率半径が小さめに形成された場合には、係合部材3
が谷部4aに深く入らないので、谷部4aからの係合部
材3の突出量が過度に大きくなることがある。このよう
な不具合を解消するために、係合部材3の線径を谷部4
aの曲率半径の最大許容値に合わせておき、谷部4aを
係合部材3に沿うように変形させることにより、係合部
材3の突出量を常に一定にするものである。That is, the radius of curvature of the valley portion 4a of the bellows tube 4A has a larger dimensional error than the wire diameter of the engaging member 3. When the radius of curvature of the valley 4a is formed to be large, the engaging member 3 deeply enters the valley 4a, and the protrusion amount of the engaging member 3 from the valley 4a becomes small. Conversely, the valley 4a
When the radius of curvature of the engaging member 3 is small, the engaging member 3
Does not go deeply into the valley 4a, so the amount of protrusion of the engagement member 3 from the valley 4a may become excessively large. In order to eliminate such a problem, the wire diameter of the engaging member 3 is changed to the valley portion 4
The protrusion amount of the engaging member 3 is always constant by deforming the valley 4a along the engaging member 3 in accordance with the maximum allowable value of the radius of curvature of a.
【0030】ねじ部6Aをさらに左方へ移動させると、
押圧部6B1が係合部材3に突き当たり、係合部材3を
介して蛇腹管4Aを押す。そして、シール部材5を介し
て当接面1eに突き当てる。ねじ部6Aをさらに左方へ
移動させると、シール部材5と係合部材3との間の1山
分が押し潰される。これによって、蛇腹管4Aの接続が
終了する。なおこのとき、支持部材2はねじ部6Aによ
って左方へ移動させられ、環状溝1hに入り込む。When the screw portion 6A is further moved to the left,
The pressing portion 6B 1 hits the engaging member 3 and pushes the bellows tube 4A via the engaging member 3. Then, it abuts against the contact surface 1e via the seal member 5. When the screw portion 6A is further moved to the left, one ridge between the seal member 5 and the engaging member 3 is crushed. This completes the connection of the bellows tube 4A. At this time, the support member 2 is moved to the left by the screw portion 6A and enters the annular groove 1h.
【0031】上記の接続装置においても押圧部6B1が
ねじ部6Aに対して相対回転することにより、蛇腹管4
Aが回転するのを防止することができる。なお、テーパ
面6hが係合部材3に突き当たって縮径させる際に、係
合部材3を回転させようとするが、その接触圧が小さい
ので蛇腹管4Aが回転することはない。In the above connecting device as well, the pressing portion 6B 1 rotates relative to the screw portion 6A, so that the bellows tube 4
It is possible to prevent A from rotating. When the tapered surface 6h hits the engaging member 3 to reduce its diameter, the engaging member 3 is tried to rotate, but the contact pressure is small, so that the bellows tube 4A does not rotate.
【0032】また、この実施例においては、押圧部材6
を左方へ移動させたときに、支持部材2が押圧部材6に
押されて環状溝1hに入り込むようにしているので、前
述した各実施例に比して支持部材2が環状溝1hに入り
込む分だけ装置全体を短くすることができる。Further, in this embodiment, the pressing member 6
Since the supporting member 2 is pushed into the annular groove 1h by being pushed by the pressing member 6 when is moved to the left, the supporting member 2 enters the annular groove 1h as compared with the above-described embodiments. The entire device can be shortened accordingly.
【0033】図10および図11に示す接続装置Eは、
図6に示す接続装置Dの押圧部6B1に代えて押圧部6
B2を用いるようにしたものであり、押圧部6B2は、接
続装置Dにおけるテーパ面6hおよびストレート孔部6
eの機能を兼ね備えている。すなわち、押圧部6B
2は、先端側(当接部1e側)から後端側へ向かって順
次形成された、テーパ部6i、筒部6jおよび環状突出
部6kから構成されている。テーパ部6iおよび筒部6
jの内周面は、蛇腹管4Aに対してそれぞれテーパ面6
h、ストレート孔部6eと同一の機能を果すように形成
されており、環状突出部6kは押圧部6B′と同一の機
能を果すように形成されている。なお、押圧部6B
2は、その先端面が環状の係止凸部6lによって抜け止
めされている。The connection device E shown in FIGS. 10 and 11 is
The pressing portion 6B 1 of the connection device D shown in FIG.
B 2 is used, and the pressing portion 6B 2 includes the tapered surface 6h and the straight hole portion 6 in the connection device D.
It also has the function of e. That is, the pressing portion 6B
The reference numeral 2 includes a tapered portion 6i, a tubular portion 6j, and an annular protruding portion 6k that are sequentially formed from the front end side (contact portion 1e side) toward the rear end side. Tapered portion 6i and tubular portion 6
The inner peripheral surface of j is tapered surface 6 with respect to the bellows tube 4A.
h, it is formed so as to have the same function as the straight hole portion 6e, and the annular projecting portion 6k is formed so as to have the same function as the pressing portion 6B '. The pressing portion 6B
The end surface of 2 is prevented from coming off by an annular locking projection 6l.
【0034】図12は、座金状をなす押圧部のさらに他
の変形例を示すものであり、押圧部6B3は、テーパ状
に形成されている。この押圧部6B3は、図1〜図5に
示す実施例のテーパ面6dと同様な機能を果すものであ
る。FIG. 12 shows still another modification of the washer-shaped pressing portion, in which the pressing portion 6B 3 is formed in a tapered shape. The pressing portion 6B 3 is to perform the same function as the tapered surface 6d of the embodiment shown in FIGS.
【0035】なお、この発明は、上記の実施例に限定さ
れるものでなく、その要旨を逸脱しない範囲において適
宜変更可能である。例えば、上記の各実施例において
は、装置本体1をねじ部1fを利用してガス機器に接続
するようにしているが、装置本体1をガス機器と一体に
形成してもよい。The present invention is not limited to the above embodiments, but can be modified as appropriate without departing from the scope of the invention. For example, in each of the above-described embodiments, the device body 1 is connected to the gas device by using the screw portion 1f, but the device body 1 may be formed integrally with the gas device.
【0036】また、上記の実施例は、係合部材3を接続
孔1a内に予め配置し、蛇腹管4Aを挿入すると自動的
に蛇腹管4Aに装着されるタイプの接続装置にこの発明
を適用したものであるが、二つ割りの係合部材を蛇腹管
に予め装着した後、蛇腹管を接続孔に挿入するタイプの
ものにも適用することができる。Further, in the above-described embodiment, the present invention is applied to a connecting device of a type in which the engaging member 3 is arranged in advance in the connection hole 1a and the bellows tube 4A is automatically attached when the bellows tube 4A is inserted. However, the invention can also be applied to a type in which the bellows tube is inserted into the connection hole after the halves of the engaging member are previously attached to the bellows tube.
【0037】さらに、上記の実施例においては、接続孔
1aの内周に形成された雌ねじ部1bに押圧部材6を螺
合させているが、特開平4ー125389号公報に記載
のもののように、装置本体1の外周に押圧部材6のねじ
部6Aを螺合させるようにしてもよい。Further, in the above embodiment, the pressing member 6 is screwed into the female screw portion 1b formed on the inner circumference of the connection hole 1a, but as in the one disclosed in Japanese Patent Laid-Open No. 125389/1992. The screw portion 6A of the pressing member 6 may be screwed onto the outer periphery of the apparatus body 1.
【0038】[0038]
【発明の効果】以上説明したように、この発明の蛇腹管
用接続装置によれば、押圧部材を装置本体に螺合された
ねじ部と係合部材に押圧接触する押圧部とに分割し、押
圧部をねじ部に対して相対回転可能としたものであるか
ら、押圧部材の回転移動に伴って蛇腹管が回転するのを
防止することができ、蛇腹管によってシール部材が傷つ
けられるのを防止することができ、これによって、蛇腹
管と装置本体の接続孔との間の気密性を長期にわたって
良好に維持することができるという効果が得られる。As described above, according to the bellows tube connecting device of the present invention, the pressing member is divided into the screw portion screwed into the main body of the device and the pressing portion which comes into press contact with the engaging member, and presses. Since the portion is rotatable relative to the screw portion, it is possible to prevent the bellows tube from rotating due to the rotational movement of the pressing member, and prevent the seal member from being damaged by the bellows tube. As a result, it is possible to obtain the effect that the airtightness between the bellows tube and the connection hole of the device body can be favorably maintained for a long period of time.
【図1】この発明に係る蛇腹管用接続装置Aを示す縦断
面図である。FIG. 1 is a vertical sectional view showing a bellows tube connecting device A according to the present invention.
【図2】図1のX円部の拡大図である。FIG. 2 is an enlarged view of an X circle portion of FIG.
【図3】図1に示す接続装置Aの作用を説明するための
図であって、図3(A)は蛇腹管を接続孔に挿入した状
態を示す図、図3(B)は押圧部材が係合部材に突き当
たった状態を示す図、図3(C)は蛇腹管が押し潰され
た状態を示す図である。3A and 3B are views for explaining the operation of the connection device A shown in FIG. 1, FIG. 3A is a view showing a state in which a bellows tube is inserted into a connection hole, and FIG. 3B is a pressing member. FIG. 3 is a diagram showing a state where the abutment member has struck the engaging member, and FIG. 3C is a diagram showing a state where the bellows tube is crushed.
【図4】この発明に係る蛇腹管用接続装置Bを示す断面
図である。FIG. 4 is a sectional view showing a bellows tube connecting device B according to the present invention.
【図5】この発明に係る蛇腹管用接続装置Cを示す断面
図である。FIG. 5 is a sectional view showing a bellows tube connecting device C according to the present invention.
【図6】この発明に係る蛇腹管用接続装置Dを示す断面
図である。FIG. 6 is a sectional view showing a bellows tube connecting device D according to the present invention.
【図7】図6に示す接続装置Dにおいて用いられる座金
を示す平面図である。7 is a plan view showing a washer used in the connection device D shown in FIG.
【図8】図6のY円部の拡大図である。FIG. 8 is an enlarged view of a Y circle portion in FIG.
【図9】図6に示す接続装置Dの作用を説明するための
図であって、図9(A)は蛇腹管に係合部材が嵌まり込
むとともに、押圧部材のテーパ面が係合部材に突き当た
った状態を示す図、図9(B)は座金が係合部材に突き
当たった状態を示す図、図9(C)は蛇腹管が押し潰さ
れた状態を示す図である。9 is a view for explaining the operation of the connection device D shown in FIG. 6, and FIG. 9 (A) shows that the engaging member fits into the bellows tube, and the tapered surface of the pressing member is the engaging member. 9B is a diagram showing a state in which the washer abuts against the engaging member, and FIG. 9C is a diagram showing a state in which the bellows tube is crushed.
【図10】この発明に係る蛇腹管用接続装置Eを示す断
面図である。FIG. 10 is a cross-sectional view showing a bellows tube connecting device E according to the present invention.
【図11】図10のZ円部の拡大図である。11 is an enlarged view of a Z circle portion of FIG.
【図12】この発明に係る押圧部の他の例を示す図11
と同様の図である。FIG. 12 is a view showing another example of the pressing portion according to the present invention.
It is a figure similar to.
A 蛇腹管用接続装置 B 蛇腹管用接続装置 C 蛇腹管用接続装置 D 蛇腹管用接続装置 1 装置本体 1a 接続孔 1e 当接面(当接部) 3 係合部材 4A 蛇腹管 4a 谷部 4b 山部 5 シール部材 6 押圧部材 6A ねじ部 6B 押圧部 6B1 押圧部 6B2 押圧部 6B3 押圧部A connection device for bellows tube B connection device for bellows tube C connection device for bellows tube D connection device for bellows tube 1 device body 1a connection hole 1e contact surface (contact part) 3 engagement member 4A bellows tube 4a valley part 4b mountain part 5 seal Member 6 Pressing member 6A Screw part 6B Pressing part 6B 1 Pressing part 6B 2 Pressing part 6B 3 Pressing part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 斎藤 俊夫 東京都品川区豊町4丁目20番14号 光陽 産業株式会社内 (72)発明者 小杉 靖 東京都品川区豊町4丁目20番14号 光陽 産業株式会社内 (56)参考文献 実開 平3−73786(JP,U) 実開 平5−38487(JP,U) (58)調査した分野(Int.Cl.7,DB名) F16L 33/00 F16L 33/28 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshio Saito 4-20-14 Toyohashi, Shinagawa-ku, Tokyo Inside Koyo Sangyo Co., Ltd. (72) Yasushi Kosugi 4-20-14 Toyohmachi, Shinagawa-ku, Tokyo Within Koyo Sangyo Co., Ltd. (56) References: Kaihei 3-73786 (JP, U): Kaihei 5-38487 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) F16L 33 / 00 F16L 33/28
Claims (2)
を、装置本体に螺合された押圧部材をねじ込むことによ
り、蛇腹管の谷部に嵌合した係合部材を介して蛇腹管の
先端側へ押圧し、蛇腹管の先端部を接続孔の内部に形成
された当接部にシール部材を介して押し付け、シール部
材と係合部材との間に位置する蛇腹管を押し潰すように
した蛇腹管用接続装置において、上記押圧部材を装置本
体に螺合されたねじ部と、上記係合部材に押圧接触し、
上記係合部材を介して上記蛇腹管をその先端側へ押圧す
る押圧部とに分割し、押圧部をねじ部に対して相対回転
可能としたことを特徴とする蛇腹管用接続装置。1. An engaging member fitted in a trough portion of a bellows tube by screwing a bellows tube inserted into a connection hole of the apparatus body into a pressing member screwed into the apparatus body. Through the bellows tube
By pressing it toward the tip side, the tip portion of the bellows tube is pressed against the contact portion formed inside the connection hole via the seal member, so that the bellows tube located between the seal member and the engaging member is crushed. in the bellows tube connecting device, and a screw portion screwed to the pressing member in the apparatus main body, to press contact with the engagement member,
The bellows tube is pushed toward the tip side through the engaging member.
A connecting device for a bellows tube, characterized in that the pressing part is divided into two parts, and the pressing part is rotatable relative to the screw part.
時には上記蛇腹管の谷部に嵌まり込むように形成されて
おり、上記接続孔の内部の上記押圧部材と上記当接部と
の間には、接続孔に挿入される上記蛇腹管によって当接
部側へ移動させられる支持部材が接続孔の軸線方向へ移
動可能に設けられ、この支持部材の外周に上記係合部材
が拡径した状態で移動可能に装着され、上記接続孔の内
部には、上記支持部材が上記当接部側へ移動したときに
上記係合部材の当接部側への移動を阻止することによ
り、上記係合部材を上記支持部材から離脱させて上記蛇
腹管の谷部に嵌まり込ませる係止部を設けたことを特徴
とする請求項1に記載の蛇腹管用接続装置。2. The engaging member is formed so as to be capable of expanding and contracting in diameter and to be fitted into the valley portion of the bellows tube when the diameter is reduced, and the pressing member and the contact portion inside the connection hole. A support member that is moved to the contact portion side by the bellows tube inserted into the connection hole is provided movably in the axial direction of the connection hole, and the engagement member is provided on the outer periphery of the support member. It is movably mounted in an expanded state, and prevents the engagement member from moving toward the contact portion when the support member moves toward the contact portion inside the connection hole. The connecting device for a bellows tube according to claim 1, further comprising: a locking portion that disengages the engaging member from the support member and fits into a valley portion of the bellows tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29448793A JP3361860B2 (en) | 1993-10-29 | 1993-10-29 | Connecting device for bellows tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29448793A JP3361860B2 (en) | 1993-10-29 | 1993-10-29 | Connecting device for bellows tube |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07127778A JPH07127778A (en) | 1995-05-16 |
JP3361860B2 true JP3361860B2 (en) | 2003-01-07 |
Family
ID=17808404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29448793A Expired - Fee Related JP3361860B2 (en) | 1993-10-29 | 1993-10-29 | Connecting device for bellows tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3361860B2 (en) |
-
1993
- 1993-10-29 JP JP29448793A patent/JP3361860B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07127778A (en) | 1995-05-16 |
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