JP2015127565A

JP2015127565A - Connection structure

Info

Publication number: JP2015127565A
Application number: JP2013273104A
Authority: JP
Inventors: 洋平関野; Yohei Sekino
Original assignee: Flowell Corp
Current assignee: Flowell Corp
Priority date: 2013-12-27
Filing date: 2013-12-27
Publication date: 2015-07-09
Anticipated expiration: 2033-12-27
Also published as: JP6341663B2

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure capable of determining that fastening reaches a proper amount with clear touch feeling and sound, and connecting opening end parts to each other.SOLUTION: One member 20 is fastened to one elastically deformable member 30 including elastically deformable ring members 10, 10A, 210, 310, 410, and when a projection of the one member 20 climbs an inclination part 14 of the ring members 10, 210, 310 to be removed from the terminal of the inclination part 14, a flat part 15 restored to an original state from an elastic deformation state collides with the projection 22 to transmit an impact and at the same time, impact sound is generated, and the flat part is made into a moderate fastening state.

Description

本発明は、容器や継手のような一部材の開口端部の外周側に形成された雄ネジ部に対して、蓋やナットのような他部材の開口端部の内周側に形成された雌ネジ部を締込むことにより、両部材の開口端部同士を互いに接合させる接合構造に関する。 The present invention is formed on the inner peripheral side of the open end portion of another member such as a lid or a nut with respect to the external thread portion formed on the outer peripheral side of the open end portion of one member such as a container or a joint. The present invention relates to a joining structure that joins open end portions of both members to each other by tightening a female screw portion.

従来の接合構造としては、例えば特許文献１に記載された継手用締付部材の合成樹脂製締付規制具等に示されたものがある。
すなわち、継手側の差込み口部にねじ込まれて、その差込み口部に差し込まれたパイプを締め付ける締付部材の締付量を規制する締付規制具であって、締付部材を適正なねじ込み量までねじ込んで行くと締付部材の第２当り部がリング部から突き出た突起をはじくようにしたものである。 As a conventional joining structure, for example, there is one shown in a synthetic resin tightening restrictor for a joint tightening member described in Patent Document 1.
In other words, it is a tightening restrictor that restricts the tightening amount of a tightening member that is screwed into the insertion port on the joint side and tightens the pipe inserted into the insertion port. When the screw is screwed in, the second contact part of the tightening member repels the protrusion protruding from the ring part.

前記ねじ込みの際に第２当り部がリング部の突起をはじくと、はじき音が発生するとともに「はじき」の際に生じる振動が締付部材をねじ込んでいる作業者の手に伝わる。これにより、音と感触とによって締付部材を適正なねじ込み量までねじ込んだことが判断できるようにしたものである。 When the second contact portion repels the protrusion of the ring portion during the screwing, a repelling sound is generated and vibration generated during the “repel” is transmitted to the hand of the operator who is screwing the tightening member. Thus, it can be determined that the tightening member is screwed to an appropriate screwing amount by sound and touch.

特開平１１−２８０９６５号公報JP 11-280965 A

しかしながら、このような従来の技術では、感触が弱い場合がある。また、作業環境によっては、「はじき」の際に発生する音が聞き取れない場合があるという問題点があった。
また、ねじ込み量が適切でない場合、例えば、合成樹脂製の継手の場合は、ねじ込み量が少なければ継手を通過する流体が漏れてしまい、ねじ込み量が多すぎると継手の内径に突部等の変形が起こって圧力損失が生じてしまう等の問題点があった。 However, such a conventional technique may have a weak touch. Also, depending on the work environment, there is a problem that the sound generated at the time of “repelling” may not be heard.
Also, when the screwing amount is not appropriate, for example, in the case of a joint made of synthetic resin, if the screwing amount is small, the fluid passing through the joint leaks, and if the screwing amount is too large, the inner diameter of the joint is deformed. Has occurred, causing pressure loss.

本発明は、このような従来の技術が有する問題点に着目してなされたもので、締込みが適量に達したことを明確な感触と音とで判断することができる、開口端部同士を互いに接合させる接合構造を提供することを目的としている。 The present invention has been made by paying attention to such problems of the prior art, and it is possible to determine that the tightening has reached an appropriate amount by using a clear feel and sound. It aims at providing the junction structure joined mutually.

かかる目的を達成するための本発明の要旨とするところは、次の各項の発明に存する。
［１］一部材（３０）の開口端部の外周側に形成された雄ネジ部（３２）に対して、他部材（２０）の開口端部の内周側に形成された雌ネジ部（２３）を締込むことにより、両部材の開口端部同士を互いに接合させる接合構造において、
前記一部材（３０）と他部材（２０）との間に介装するように、前記一部材（３０）の雄ネジ部（３２）に遊嵌するリング部材（１０、１０Ａ、２１０、３１０、４１０）を備え、
少なくとも前記一部材（３０）の開口端部と前記リング部材（１０、１０Ａ、２１０、３１０、４１０）とは弾性変形可能であり、
前記他部材（２０）は、前記一部材（３０）への締込みの際の進行側先端に突起（２２）を有し、
前記一部材（３０）は、前記雄ネジ部（３２）の基端側に前記リング部材（１０、１０Ａ、２１０、３１０、４１０）を受ける受部（３３、３３Ａ、３３Ｂ）を有し、
前記リング部材（１０、１０Ａ、２１０、３１０）は、前記受部（３３）に当接する当接面側に突出して形成された凸部（１１）を有し、前記他部材（２０）の進行側先端を受ける、前記当接面と反対側の受面は、前記他部材（２０）を回して締込む際に前記突起（２２）に対して登り勾配となる傾斜部（１４）と、該傾斜部（１４）の登り勾配の終端から下がった位置より隣の傾斜部（１４）の始端まで延びる平坦部（１５）とを有し、
前記リング部材（１０、１０Ａ、２１０、３１０、４１０）を介装した前記一部材（３０）に前記他部材（２０）を締込んで、前記他部材（２０）の突起（２２）が前記リング部材（１０、１０Ａ、２１０、３１０、４１０）の傾斜部（１４）を登って該傾斜部（１４）の終端から外れると、弾性変形状態から元に戻る前記平坦部（１５）が前記突起（２２）に衝突するとともに所定の締込み状態と成ることを特徴とする接合構造。 The gist of the present invention for achieving the object lies in the inventions of the following items.
[1] With respect to the male screw portion (32) formed on the outer peripheral side of the opening end portion of the one member (30), the female screw portion formed on the inner peripheral side of the opening end portion of the other member (20) ( 23) In the joining structure in which the opening ends of both members are joined to each other by tightening,
Ring members (10, 10A, 210, 310, loosely fitted to the male thread portion (32) of the one member (30) so as to be interposed between the one member (30) and the other member (20). 410),
At least the opening end of the one member (30) and the ring member (10, 10A, 210, 310, 410) are elastically deformable,
The other member (20) has a protrusion (22) at the front end on the advancing side when tightening into the one member (30),
The one member (30) has a receiving part (33, 33A, 33B) for receiving the ring member (10, 10A, 210, 310, 410) on the base end side of the male screw part (32),
The ring member (10, 10A, 210, 310) has a convex part (11) formed to protrude toward the abutting surface abutting on the receiving part (33), and the other member (20) advances. The receiving surface on the opposite side to the abutting surface that receives the side tip includes an inclined portion (14) that is inclined upward with respect to the protrusion (22) when the other member (20) is turned and tightened, A flat portion (15) extending from the position descending from the end of the climbing slope of the inclined portion (14) to the starting end of the adjacent inclined portion (14);
The other member (20) is fastened into the one member (30) having the ring member (10, 10A, 210, 310, 410) interposed therebetween, and the protrusion (22) of the other member (20) is connected to the ring. When the inclined portion (14) of the member (10, 10A, 210, 310, 410) is climbed and removed from the terminal end of the inclined portion (14), the flat portion (15) returning from the elastically deformed state to the original state is the projection ( 22) A joining structure characterized by colliding with 22) and being in a predetermined tightening state.

［２］前記リング部材（１０、１０Ａ）は、前記凸部（１１）の先端と基端との中間位置から隣の凸部（１１）に向かって延びる中間面部（１２）と、該中間面部（１２）の端部から段差を付けた位置より、隣の凸部（１１）の基端まで延びる基端面部（１３）とを有することを特徴とする項［１］に記載の接合構造。 [2] The ring member (10, 10A) includes an intermediate surface portion (12) extending from an intermediate position between the distal end and the proximal end of the convex portion (11) toward the adjacent convex portion (11), and the intermediate surface portion. The joint structure according to item [1], further including a base end surface portion (13) extending from a position where a step is provided from the end of (12) to the base end of the adjacent convex portion (11).

［３］前記傾斜部（１４）の登り勾配の始端は、前記凸部（１１）の直上に位置し、終端は、前記基端面部（１３）の直上に位置することを特徴とする項［２］に記載の接合構造。 [3] The starting point of the climbing gradient of the inclined portion (14) is located immediately above the convex portion (11), and the end is located immediately above the base end face portion (13). 2].

［４］前記凸部（１１）、前記中間面部（１２）、前記基端面部（１３）、前記傾斜部（１４）および前記平坦部（１５）の形成数は、同数であることを特徴とする項［２］または［３］に記載の接合構造。 [4] The number of the convex portions (11), the intermediate surface portion (12), the base end surface portion (13), the inclined portion (14), and the flat portion (15) is the same. The joining structure according to item [2] or [3].

［５］前記他部材（２０）の突起（２２）は、前記形成数の２以上の約数であることを特徴とする項［４］に記載の接合構造。 [5] The joint structure according to item [4], wherein the protrusion (22) of the other member (20) is a divisor of 2 or more of the number of formations.

［６］前記一部材（３０）の受部（３３Ａ）は、前記凸部（１１）に当接して前記リング部材（２１０）の回転を規制するストッパ凸部（３４）を有することを特徴とする項［１］に記載の接合構造。 [6] The receiving portion (33A) of the one member (30) has a stopper convex portion (34) that contacts the convex portion (11) and restricts the rotation of the ring member (210). The joining structure according to item [1].

［７］前記リング部材（３１０）の凸部（１１、３１１）の少なくとも一つは他の凸部（１１）よりも長く突き出ており、
前記一部材（３０）の受部（３３Ｂ）は、他の凸部（１１）よりも長い前記凸部（３１１）が嵌まって、前記リング部材（３１０）の回転が規制されるストッパ凹部（３５）を有することを特徴とする項［１］に記載の接合構造。 [7] At least one of the protrusions (11, 311) of the ring member (310) protrudes longer than the other protrusions (11),
The receiving portion (33B) of the one member (30) has a stopper recess (in which the protrusion (311) longer than the other protrusion (11) is fitted to restrict the rotation of the ring member (310). 35) The joining structure according to item [1], comprising:

［８］一部材（３０）の開口端部の外周側に形成された雄ネジ部（３２）に対して、他部材（２０）の開口端部の内周側に形成された雌ネジ部（２３）を締込むことにより、両部材の開口端部同士を互いに接合させる接合構造において、
前記一部材（３０）と他部材（２０）との間に介装するように、前記一部材（３０）の雄ネジ部（３２）に遊嵌するリング部材（１１０）を備え、
少なくとも前記一部材（３０）の開口端部と前記リング部材（１１０）とは弾性変形可能であり、
前記他部材（２０）は、前記一部材（３０）への締込みの際の進行側先端に突起（２２）を有し、
前記一部材（３０）は、前記雄ネジ部（３２）の基端側に前記リング部材（１０）を受ける受部（３３）を有し、
前記リング部材（１１０）は、前記他部材（２０）の進行側先端を受ける受面に、前記他部材（２０）を回して締込む際に前記突起（２２）に対して登り勾配となる傾斜部（１４）と、該傾斜部（１４）の登り勾配の終端から下がった位置より隣の傾斜部（１４）の始端まで延びる平坦部（１５）とを有し、前記一部材（３０）の受部（３３）に当接する、前記受面とは反対側の当接面側にも同様の前記傾斜部（１４）と平坦部（１５）とを有し、
前記リング部材（１１０）を介装した前記一部材（３０）に前記他部材（２０）を締込んで、前記他部材（２０）の突起（２２）が前記リング部材（１１０）の傾斜部（１４）を登って該傾斜部（１４）の終端から外れると、弾性変形状態から元に戻る前記平坦部（１５）が前記突起（２２）に衝突するとともに所定の締込み状態と成ることを特徴とする接合構造。 [8] With respect to the male screw portion (32) formed on the outer peripheral side of the opening end portion of the one member (30), the female screw portion formed on the inner peripheral side of the opening end portion of the other member (20) ( 23) In the joining structure in which the opening ends of both members are joined to each other by tightening,
A ring member (110) that is loosely fitted to the male screw portion (32) of the one member (30) so as to be interposed between the one member (30) and the other member (20);
At least the opening end of the one member (30) and the ring member (110) are elastically deformable,
The other member (20) has a protrusion (22) at the front end on the advancing side when tightening into the one member (30),
The one member (30) has a receiving part (33) for receiving the ring member (10) on the base end side of the male screw part (32),
The ring member (110) is inclined so as to climb up with respect to the protrusion (22) when the other member (20) is turned and tightened to the receiving surface that receives the advancing side tip of the other member (20). Part (14) and a flat part (15) extending from the position descending from the end of the climbing slope of the inclined part (14) to the starting end of the adjacent inclined part (14), and the one member (30) The same inclined part (14) and flat part (15) are also provided on the contact surface side opposite to the receiving surface, which is in contact with the receiving portion (33),
The other member (20) is fastened to the one member (30) interposed with the ring member (110), and the protrusion (22) of the other member (20) is inclined ( 14), the flat part (15) returning from the elastically deformed state collides with the protrusion (22) and enters a predetermined tightening state when it is disengaged from the end of the inclined part (14). Joining structure.

［９］前記リング部材（１０、１１０、２１０、３１０）は、内周に軸心方向に対して垂直方向に延びた突出部（１６）を有することを特徴とする項［１］から［８］のいずれか一項に記載の接合構造。 [9] The items [1] to [8], wherein the ring member (10, 110, 210, 310) has a protrusion (16) extending in a direction perpendicular to the axial direction on an inner periphery. ] The joining structure as described in any one of.

［１０］前記傾斜部（１４）は、登り勾配の途中から傾斜角度が大きくなっていることを特徴とする項［１］から［９］のいずれか一項に記載の接合構造。 [10] The junction structure according to any one of items [1] to [9], wherein the inclined portion (14) has an inclination angle that increases from the middle of the climbing gradient.

［１１］前記リング部材（４１０）の当接面側は、前記凸部（１１）を有さない平坦面（１８）であり、
側面を貫通する複数の長穴（１９）が穿設されていることを特徴とする項［１］から［７］のいずれか一項に記載の接合構造。 [11] The contact surface side of the ring member (410) is a flat surface (18) not having the convex portion (11),
The joining structure according to any one of items [1] to [7], wherein a plurality of elongated holes (19) penetrating the side surface are formed.

前記本発明は次のように作用する。
項［１］の接合構造によれば、一部材（３０）と他部材（２０）の開口端部同士を接合させる場合には、一部材（３０）の開口端部の外周側に形成された雄ネジ部（３２）にリング部材（１０、１０Ａ、２１０、３１０、４１０）を遊嵌する。このときリング部材（１０、１０Ａ、２１０、３１０、４１０）は、当接面が一部材（３０）の受部（３３、３３Ａ、３３Ｂ）に対向する向きに遊嵌する。 The present invention operates as follows.
According to the joining structure of the item [1], when the opening ends of the one member (30) and the other member (20) are joined together, they are formed on the outer peripheral side of the opening end of the one member (30). The ring member (10, 10A, 210, 310, 410) is loosely fitted to the male screw portion (32). At this time, the ring members (10, 10A, 210, 310, 410) are loosely fitted so that the contact surfaces face the receiving portions (33, 33A, 33B) of the one member (30).

次に、他部材（２０）の開口端部の内周側に形成された雌ネジ部（２３）を一部材（３０）の雄ネジ部（３２）に締込む。締込みが進んで所定の締込み状態が近づくと他部材（２０）の進行側先端の突起（２２）がリング部材（１０、１０Ａ、２１０、３１０、４１０）の受面側に形成されている登り勾配の傾斜部（１４）に当接する。さらに他部材（２０）を絞め込んで行くと、突起（２２）は、傾斜部（１４）を終端へ向かって登る。 Next, the female screw portion (23) formed on the inner peripheral side of the opening end portion of the other member (20) is tightened into the male screw portion (32) of the one member (30). When the tightening progresses and the predetermined tightening state approaches, the protrusion (22) at the leading end of the other member (20) is formed on the receiving surface side of the ring member (10, 10A, 210, 310, 410). It abuts on the slope (14) of the climb slope. When the other member (20) is further tightened, the protrusion (22) climbs the inclined portion (14) toward the end.

突起（２２）が傾斜部（１４）を登るに従って、リング部材（１０）の凸部（１１）は、次第に強く一部材（３０）の受部（３３、３３Ａ、３３Ｂ）に押圧される。少なくとも一部材（３０）の開口端部とリング部材（１０、１０Ａ、２１０、３１０、４１０）とは弾性変形可能であるので、リング部材（１０）は、当接面側が一部材（３０）の受部（３３、３３Ａ、３３Ｂ）に向かって湾曲する。当接面が受部（３３、３３Ａ、３３Ｂ）に当接すると、それらの間に生じる摩擦力により、他部材（２０）をさらに締込んでもリング部材（１０）は回転しない。 As the protrusion (22) climbs the inclined portion (14), the convex portion (11) of the ring member (10) is gradually and strongly pressed by the receiving portions (33, 33A, 33B) of the one member (30). Since at least the opening end of one member (30) and the ring member (10, 10A, 210, 310, 410) can be elastically deformed, the ring member (10) has a contact surface on the one member (30) side. It curves toward the receiving part (33, 33A, 33B). When the contact surface comes into contact with the receiving portions (33, 33A, 33B), the ring member (10) does not rotate due to the friction force generated between them even if the other member (20) is further tightened.

突起（２２）が傾斜部（１４）の終端に達した状態からさらに他部材（２０）を締込むと、突起（２２）が終端から外れる。すると、隣り合う凸部（１１）間の湾曲が元に戻るので、突起（２２）は、平坦部（１５）と強く当る。このとき、他部材（２０）を締込んでいた作業者の手に強い衝撃が伝わるとともに大きな音が発生する。これにより、作業者は、所定の締込み状態になったことを明確に判断することができる。ここで所定の締込み状態とは、内部から流体が漏れる程には緩くなく、また、内部に過度な弾性変形が生じるほどきつくない適度な状態のことである。 When the other member (20) is further tightened from the state in which the protrusion (22) reaches the end of the inclined portion (14), the protrusion (22) is detached from the end. Then, since the curve between the adjacent convex portions (11) is restored, the projection (22) strongly hits the flat portion (15). At this time, a strong impact is transmitted to the hand of the operator who has tightened the other member (20) and a loud sound is generated. Thus, the operator can clearly determine that the predetermined tightening state has been achieved. Here, the predetermined tightening state is an appropriate state that is not so loose that fluid leaks from the inside and is not so tight that excessive elastic deformation occurs inside.

項［２］の接合構造によれば、リング部材（１０、１０Ａ）の凸部（１１）の先端と基端との中間位置から隣の凸部（１１）に向かって延びる中間面部（１２）と、該中間面部（１２）の端部から段差を付けた位置より、隣の凸部（１１）の基端まで延びる基端面部（１３）とが形成されているので、傾斜部（１４）と中間面部（１２）が形成されている部分は肉厚と成る。これにより、突起（２２）が傾斜部（１４）を登る際に早い段階で当接面側が受部（３３、３３Ａ、３３Ｂ）に押圧されるとともに湾曲が規制される。 According to the joining structure of the item [2], the intermediate surface portion (12) extending from the intermediate position between the tip end and the base end of the convex portion (11) of the ring member (10, 10A) toward the adjacent convex portion (11). And a base end surface part (13) extending from the end of the intermediate surface part (12) to the base end of the adjacent convex part (11) from a position where a step is provided, so that the inclined part (14) And the part in which the intermediate surface part (12) is formed becomes thick. As a result, when the protrusion (22) climbs the inclined portion (14), the contact surface side is pressed against the receiving portions (33, 33A, 33B) at an early stage, and the curvature is restricted.

突起（２２）が傾斜部（１４）の終端に向かってさらに登って基端面部（１３）の上方に達すると基端面部（１３）が受部（３３、３３Ａ、３３Ｂ）により接近した位置まで湾曲する。すなわち、基端面部（１３）の湾曲は大きいものとなる。したがって、突起（２２）が傾斜部（１４）の終端を過ぎて終端から外れたときの湾曲の戻りはより強いものとなり、作業者の手に伝わる衝撃と発生する音はより大きくなる。これにより、作業者は、締込み状態が所定の状態になったことをより明確に判断することができる。 When the protrusion (22) further climbs toward the end of the inclined portion (14) and reaches the upper end of the base end surface portion (13), the base end surface portion (13) reaches a position closer to the receiving portion (33, 33A, 33B). Bend. That is, the curvature of the base end face portion (13) is large. Therefore, when the protrusion (22) passes the end of the inclined portion (14) and deviates from the end, the return of the curve becomes stronger, and the impact transmitted to the operator's hand and the generated sound become larger. Thereby, the operator can determine more clearly that the tightening state has become a predetermined state.

項［３］の接合構造によれば、傾斜部（１４）の登り勾配の始端が凸部（１１）の直上に位置するので、突起（２２）が傾斜部（１４）に載る際に、湾曲が生じることがないので、突起（２２）はスムーズに傾斜部（１４）に載ることができる。また、傾斜部（１４）の終端が基端面部（１３）の直上に位置するので、項［２］の接合構造と同様に作業者の手に伝わる衝撃と発生する音はより大きくなる。 According to the joint structure of the item [3], since the start end of the slope of the inclined portion (14) is located immediately above the convex portion (11), the protrusion (22) is curved when placed on the inclined portion (14). Therefore, the protrusion (22) can be smoothly placed on the inclined portion (14). Further, since the end of the inclined portion (14) is located immediately above the base end face portion (13), the impact transmitted to the operator's hand and the generated sound are further increased in the same manner as in the joint structure of item [2].

項［４］および項［５］の接合構造によれば、凸部（１１）、中間面部（１２）、基端面部（１３）、傾斜部（１４）および平坦部（１５）の形成数は、同数であり、他部材（２０）の突起（２２）の数は、前記形成数の２以上の約数であるので、他部材（２０）を一部材（３０）に締込む際に他部材（２０）の全ての突起（２２）が同時に傾斜部（１４）を登り、同時に傾斜部（１４）の終端から外れて平坦部（１５）との衝突による衝撃と音が同時に発生するので、より大きな衝撃と音が発生し、作業者は、締込み状態が所定の状態になったことをより明確に判断することができる。 According to the joint structure of the item [4] and the item [5], the number of formation of the convex portion (11), the intermediate surface portion (12), the base end surface portion (13), the inclined portion (14), and the flat portion (15) is Since the number of protrusions (22) of the other member (20) is a divisor of 2 or more of the number of formations, the other member (20) is tightened into one member (30). Since all the protrusions (22) of (20) climb the inclined portion (14) at the same time, and simultaneously come off from the end of the inclined portion (14), the impact and sound due to the collision with the flat portion (15) are generated at the same time. A large impact and sound are generated, and the operator can more clearly determine that the tightening state has become a predetermined state.

項［６］の接合構造によれば、一部材（３０）の受部（３３Ａ）は、リング部材（２１０）の凸部（１１）に当接してリング部材（２１０）の回転を規制するストッパ凸部（３４）を有しているので、他部材（２０）の突起（２２）が傾斜部（１４）を登る際にリング部材（２１０）が他部材（２０）とともに回転してしまうことを防止することができる。 According to the joint structure of item [6], the receiving portion (33A) of the one member (30) is in contact with the convex portion (11) of the ring member (210) to restrict the rotation of the ring member (210). Since the protrusion (34) is provided, the ring member (210) rotates together with the other member (20) when the protrusion (22) of the other member (20) climbs the inclined portion (14). Can be prevented.

項［７］の接合構造によれば、リング部材（３１０）の凸部（１１、３１１）の少なくとも一つは他の凸部（１１）よりも長く突き出ており、一部材（３０）の受部（３３Ｂ）には、他の凸部（１１）よりも長い前記凸部（３１１）が嵌まるストッパ凹部（３５）が形成されているので、他部材（２０）の突起（２２）が傾斜部（１４）を登る際にリング部材（３１０）が他部材（２０）とともに回転してしまうことを防止することができる。 According to the joint structure of item [7], at least one of the protrusions (11, 311) of the ring member (310) protrudes longer than the other protrusions (11), and the one member (30) is received. Since the stopper recess (35) into which the projection (311) longer than the other projection (11) is fitted is formed in the portion (33B), the projection (22) of the other member (20) is inclined. It is possible to prevent the ring member (310) from rotating together with the other member (20) when climbing the portion (14).

項［８］の接合構造によれば、リング部材（１１０）は、前記他部材（２０）の進行側先端を受ける受面とは反対側の当接面側にも受面と同様の傾斜部（１４）と平坦部（１５）とを有しており、当接面と受面とは同一の構成となっているので、リング部材（１１０）に表裏の別はない。したがって、リング部材（１１０）の使用に表裏を間違えるということは皆無となり、使い勝手が大きく向上する。 According to the joining structure of item [8], the ring member (110) has the same inclined portion as the receiving surface on the contact surface side opposite to the receiving surface that receives the advancing side tip of the other member (20). (14) and the flat part (15), and since the contact surface and the receiving surface have the same configuration, there is no distinction between the front and back of the ring member (110). Therefore, there is no mistake in use of the ring member (110), and usability is greatly improved.

項［９］の接合構造によれば、リング部材（１０、１０Ａ、２１０、３１０、４１０）の内周に軸心方向に対して垂直方向に延びた突出部（１６）を有するので、一部材（３０）の雄ネジ部（３２）に遊嵌したときに雄ネジ部（３２）に引っかかり易くなり、不用意に外れ落ちることを防止することができる。 According to the joining structure of item [9], the ring member (10, 10A, 210, 310, 410) has the protrusion (16) extending in the direction perpendicular to the axial direction on the inner periphery of the ring member (10, 10A, 210, 310, 410). When loosely fitted to the male screw part (32) of (30), it becomes easy to get caught by the male screw part (32), and it is possible to prevent inadvertent detachment.

項［１０］の接合構造によれば、傾斜部（１４）は、登り勾配の途中から傾斜角度が大きくなっているので、突起（２２）がリング部材（１０、１０Ａ、２１０、３１０、４１０）に接触し始める位置が傾斜角度の大きい部分の場合には、他部材（２０）に押されてリング部材（１０Ａ）も回転するとともに突起（２２）の接触位置が傾斜角度の小さい部分まで相対的に移動する。そこまで移動した突起（２２）は、その後、他部材（２０）の回転に従ってリング部材（１０Ａ）を撓ませるとともに傾斜部（１４）を登る。したがって、突起（２２）がリング部材（１０Ａ）に接触し始める位置が傾斜角度の大きい部分の場合であっても突起（２２）は、スムーズに傾斜部（１４）を登ることができる。これにより、傾斜部（１４）の終端から外れたときが、正確に他部材（２０）を締込んだ所定の状態となったときとなる。 According to the joint structure of the item [10], the inclined portion (14) has an inclination angle that increases from the middle of the climbing gradient, so that the protrusion (22) is a ring member (10, 10A, 210, 310, 410). When the position where the contact starts is a portion with a large inclination angle, the ring member (10A) is rotated by being pushed by the other member (20), and the contact position of the protrusion (22) is relative to the portion with a small inclination angle. Move to. The protrusion (22) that has moved to that point then bends the ring member (10A) and climbs the inclined portion (14) as the other member (20) rotates. Therefore, even if the position where the protrusion (22) starts to contact the ring member (10A) is a portion with a large inclination angle, the protrusion (22) can smoothly climb the inclined portion (14). As a result, the time when the inclined portion (14) is removed from the end is the time when the other member (20) is accurately tightened into a predetermined state.

項［１１］の接合構造によれば、リング部材（４１０）の当接面側は、凸部（１１）を有さない平坦面（１８）であるので、当該平坦面（１８）が接触する一部材（３０）側の面に傷や凹凸があっても、それらにリング部材（４１０）が引っ掛かってしまうことがないので、突起（２２）が傾斜部（１４）の終端から外れたときが、正確に締込みの状態が所定の状態となったときとなる。突起（２２）が傾斜部（１４）を登るときは、側面を貫通する長穴（１９）の部分が潰れるように変形することによってリング部材（４１０）が撓む。 According to the joining structure of item [11], the contact surface side of the ring member (410) is a flat surface (18) that does not have the convex portion (11), so that the flat surface (18) comes into contact. Even if there are scratches or irregularities on the surface of the one member (30), the ring member (410) will not be caught by them, so that the protrusion (22) is detached from the end of the inclined portion (14). This is when the tightening state is accurately set to a predetermined state. When the protrusion (22) climbs the inclined portion (14), the ring member (410) bends by being deformed so that the portion of the long hole (19) passing through the side surface is crushed.

本発明にかかる接合構造によれば、作業者が一部材を手で回して他部材を締込むときに、他部材の進行側先端の突起がリング部材の傾斜部に当接し、リング部材を湾曲させながら傾斜部を移動し、締込み量が適度となるところで傾斜部の終端を外れると、湾曲したリング部材が元に戻るときに平坦部が突起に衝突して大きな音が発生するとともに、傾斜部を外れたときの力の抜けと衝突による衝撃とを手の感覚で明確に感じ取ることができるので、騒音のある作業環境や締込みを目視できない作業環境においても、一部材および他部材の内部から流体が漏れる程には緩くなく、また、内部に過度な弾性変形が生じるほどきつくない所定の締込み状態になったことを明確に判断することができる。 According to the joining structure of the present invention, when an operator manually turns one member and tightens the other member, the protrusion at the front end of the other member contacts the inclined portion of the ring member, and the ring member is bent. If the end of the inclined part is removed when the tightening amount is moderate, the flat part collides with the protrusion when the curved ring member returns, and a loud sound is generated. Because it is possible to clearly sense the loss of force and the impact caused by a collision when moving off the part, the inside of one member and other members can be used even in noisy working environments or working environments where tightening is not visible. Therefore, it can be clearly determined that the predetermined tightening state is not so loose that the fluid leaks from the pipe and is not so tight that excessive elastic deformation occurs inside.

本発明の第１の実施の形態に係る接合構造を用いた継手を示す斜視図である。It is a perspective view which shows the coupling using the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造を用いた継手を示す正面図である。It is a front view which shows the coupling using the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造を用いた継手を示す平面図である。It is a top view which shows the coupling using the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造を用いた継手を示す右側面図である。It is a right view which shows the coupling using the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造を用いた継手を斜め右下方から見た斜視図である。It is the perspective view which looked at the coupling using the joining structure concerning a 1st embodiment of the present invention from diagonally lower right. 図１の継手からナットを除いた状態を示す斜視図である。It is a perspective view which shows the state which removed the nut from the coupling of FIG. 図２の継手からナットを除いた状態を示す正面図である。It is a front view which shows the state which removed the nut from the coupling of FIG. 図３の継手からナットを除いた状態を示す平面図である。It is a top view which shows the state which removed the nut from the coupling of FIG. 図４の継手からナットを除いた状態を示す右側面図である。It is a right view which shows the state which removed the nut from the coupling of FIG. 図５の継手からナットを除いた状態を斜め右下方から見た斜視図である。It is the perspective view which looked at the state which removed the nut from the coupling of FIG. 5 from diagonally lower right. 図１の継手から本発明の第１の実施の形態に係る接合構造を除いた状態を示す斜視図である。It is a perspective view which shows the state which remove | excluded the joining structure which concerns on the 1st Embodiment of this invention from the coupling of FIG. 本発明の第１の実施の形態に係る接合構造におけるリング部材を斜め上方から見た斜視図である。It is the perspective view which looked at the ring member in the joining structure concerning a 1st embodiment of the present invention from the slanting upper part. 本発明の第１の実施の形態に係る接合構造におけるリング部材を斜め下方から見た斜視図である。It is the perspective view which looked at the ring member in the joining structure concerning a 1st embodiment of the present invention from the slanting lower part. 本発明の第１の実施の形態に係る接合構造におけるリング部材を示す正面図である。It is a front view which shows the ring member in the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造におけるリング部材を示す平面図である。It is a top view which shows the ring member in the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造におけるリング部材を示す側面図である。It is a side view which shows the ring member in the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造におけるリング部材を示す底面図である。It is a bottom view which shows the ring member in the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造におけるナットを斜め上方から見た斜視図である。It is the perspective view which looked at the nut in the joining structure concerning a 1st embodiment of the present invention from the slanting upper part. 本発明の第１の実施の形態に係る接合構造におけるナットを斜め下方から見た斜視図である。It is the perspective view which looked at the nut in the joining structure concerning a 1st embodiment of the present invention from the slanting lower part. 本発明の第１の実施の形態に係る接合構造におけるナットを示す正面図である。It is a front view which shows the nut in the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造におけるナットを示す平面図である。It is a top view which shows the nut in the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造におけるナットを示す側面図である。It is a side view which shows the nut in the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造におけるナットを示す底面図である。It is a bottom view which shows the nut in the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造による締込み過程を示す説明図である。It is explanatory drawing which shows the fastening process by the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造におけるリング部材を示す模式図である。It is a schematic diagram which shows the ring member in the joining structure which concerns on the 1st Embodiment of this invention. 本発明の第２の実施の形態に係る接合構造におけるリング部材を示す模式図である。It is a schematic diagram which shows the ring member in the joining structure which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施の形態に係る接合構造におけるリング部材を示す模式図である。It is a schematic diagram which shows the ring member in the joining structure which concerns on the 3rd Embodiment of this invention. 本発明の第４の実施の形態に係る接合構造におけるリング部材を示す模式図である。It is a schematic diagram which shows the ring member in the junction structure which concerns on the 4th Embodiment of this invention. 本発明の第１の実施の形態に係る接合構造におけるリング部材の変形例を斜め上方から見た斜視図である。It is the perspective view which looked at the modification of the ring member in the joining structure concerning the 1st Embodiment of this invention from diagonally upward. 本発明の第１の実施の形態に係る接合構造におけるリング部材の変形例を斜め下方から見た斜視図である。It is the perspective view which looked at the modification of the ring member in the joining structure concerning the 1st Embodiment of this invention from diagonally downward. 本発明の第３の実施の形態に係る接合構造におけるリング部材の変形例を斜め上方から見た斜視図である。It is the perspective view which looked at the modification of the ring member in the joining structure concerning the 3rd Embodiment of this invention from diagonally upward. 本発明の第３の実施の形態に係る接合構造におけるリング部材の変形例を斜め下方から見た斜視図である。It is the perspective view which looked at the modification of the ring member in the joining structure concerning the 3rd Embodiment of this invention from diagonally downward. 本発明の第１の実施の形態に係る接合構造におけるリング部材を遊嵌した継手に管を接続したものを斜め上方から見た斜視図である。It is the perspective view which looked at what connected the pipe | tube to the coupling | joint which loosely fitted the ring member in the joining structure which concerns on the 1st Embodiment of this invention from diagonally upward. 本発明の第１の実施の形態に係る接合構造におけるリング部材の変形例を示す模式図である。It is a schematic diagram which shows the modification of the ring member in the joining structure which concerns on the 1st Embodiment of this invention. 図３４の変形例の作用を示す説明図である。It is explanatory drawing which shows the effect | action of the modification of FIG. 本発明の第５の実施の形態に係る接合構造におけるリング部材を示す側面図である。It is a side view which shows the ring member in the joining structure which concerns on the 5th Embodiment of this invention.

以下、図面に基づき本発明の好適な各種の実施の形態を説明する。
図１からは図２５は、本発明の第１の実施の形態を示している。
以下、本実施の形態に係る接合構造について、弾性変形可能な合成樹脂製のエルボ継手に用いたものを例示して説明する。 Hereinafter, various preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 to FIG. 25 show a first embodiment of the present invention.
Hereinafter, the joint structure according to the present embodiment will be described with reference to an elbow joint made of an elastically deformable synthetic resin.

図１から図５までは、図１１に示したエルボ継手３０に本実施の形態に係る接合構造を用いたものである。図１１に示したように、エルボ継手３０は、その２つの開口端部それぞれは、他の管体を接続するための接続管部３１とその雄ネジが外周に形成された雄ネジ部３２とから成っている。また、それぞれの雄ネジ部３２の基端側には、後述するリング部材１０を受ける受部３３が形成されている。 1 to 5 show the elbow joint 30 shown in FIG. 11 using the joint structure according to the present embodiment. As shown in FIG. 11, the elbow joint 30 has two open end portions each having a connection pipe portion 31 for connecting another pipe body and a male screw portion 32 having a male screw formed on the outer periphery thereof. Consists of. A receiving portion 33 that receives the ring member 10 described later is formed on the base end side of each male screw portion 32.

図１から図５までに示したように、上記のエルボ継手３０に対して不図示の管体を接合する際には、リング部材１０を雄ネジ部３２に遊嵌しておき、管体を接続管部３１に外嵌した上でナット２０を雄ネジ部３２に締込んで行う。図６から図１０までは、エルボ継手３０の雄ネジ部３２にリング部材１０を遊嵌させた状態を示している。 As shown in FIG. 1 to FIG. 5, when a tube body (not shown) is joined to the elbow joint 30, the ring member 10 is loosely fitted to the male thread portion 32, and the tube body is The nut 20 is fastened to the male threaded portion 32 after being externally fitted to the connecting pipe portion 31. 6 to 10 show a state where the ring member 10 is loosely fitted to the male thread portion 32 of the elbow joint 30.

図１２から図１７までに示すように、リング部材１０は、全体形状が帯状のリング状のものである。このリング部材１０には、エルボ継手３０の受部３３に当接する当接面側に４つの突出した凸部１１が等間隔に形成されている。凸部１１と隣の凸部１１との間には凸部１１の先端と基端との中間位置から締込みの回転方向に延びる平坦な中間面部１２が延びている。この中間面部１２の終端部からは隣の凸部１１の基端の位置の高さまで段差が付けられて、隣の凸部１１の基端まで延びる平坦な基端面部１３が形成されている。 As shown in FIGS. 12 to 17, the ring member 10 is a ring-shaped member having an overall shape of a belt. In the ring member 10, four protruding convex portions 11 are formed at equal intervals on the contact surface side that contacts the receiving portion 33 of the elbow joint 30. Between the convex part 11 and the adjacent convex part 11, the flat intermediate surface part 12 extended in the rotation direction of fastening from the intermediate position of the front-end | tip and base end of the convex part 11 is extended. A flat base end surface portion 13 extending from the end portion of the intermediate surface portion 12 to the height of the base end position of the adjacent convex portion 11 is formed to extend to the base end of the adjacent convex portion 11.

当接面とは反対側の面は、ナット２０をエルボ継手３０に締込むときに進行する側となる進行側先端を受ける受面には、締込みの回転方向に登り勾配となる傾斜部１４が形成されている。この傾斜部１４の登り勾配の終端からは、当接面方向に始端上面の位置よりも当接面寄りの位置まで段差が付けられている。この当接面寄りの位置からは、締込みの回転方向の隣にある傾斜部１４の始端まで延びる平坦部１５が形成されている。 The surface opposite to the abutting surface is a receiving surface that receives the advancing side tip that becomes the advancing side when the nut 20 is tightened into the elbow joint 30, and the inclined portion 14 that is inclined upward in the tightening rotation direction. Is formed. From the end of the upward slope of the inclined portion 14, a step is provided in the contact surface direction to a position closer to the contact surface than the position of the upper surface of the start end. From the position close to the contact surface, a flat portion 15 is formed extending to the start end of the inclined portion 14 adjacent to the tightening rotation direction.

傾斜部１４の登り勾配が始まる始端は、当接面に形成された凸部１１の直上に位置している。また、登り勾配を登りきった終端は、基端面部１３の直上に位置する。すなわち、中間面部１２の終端と締込みの回転方向の隣の凸部１１の基端との間の上方に位置している。これら傾斜部１４と平坦部１５の組は、受面上に４組が形成されている。 The starting end where the slope of the inclined portion 14 starts is located immediately above the convex portion 11 formed on the contact surface. Further, the terminal end that has fully climbed the climbing slope is located immediately above the base end face portion 13. That is, it is located above between the terminal end of the intermediate surface portion 12 and the proximal end of the convex portion 11 adjacent to the tightening rotation direction. Four sets of these inclined portions 14 and flat portions 15 are formed on the receiving surface.

この受面上に傾斜部１４と平坦部１５とを一組として形成されている形成数は、当接面上に凸部１１と中間面部１２と基端面部１３とを一組として形成されている形成数と同数である。 On the receiving surface, the inclined portion 14 and the flat portion 15 are formed as a set, and the convex portion 11, the intermediate surface portion 12, and the base end surface portion 13 are formed as a set on the contact surface. It is the same number of formations.

図１５および図１７に明示したように、リング部材１０の内周には、リング部材１０の軸心方向に対して垂直方向に延びた突出部１６が形成されている。この突出部１６は、エルボ継手３０の雄ネジ部３２に遊嵌したときに雄ネジ部３２に引っかかり易くして、不用意に外れ落ちることを防止するためのものである。図示した突出部１６は、リング部材１０の内周の全周に亘って形成されているが、全周に部分的に形成してもよい。 As clearly shown in FIGS. 15 and 17, a protrusion 16 extending in a direction perpendicular to the axial direction of the ring member 10 is formed on the inner periphery of the ring member 10. The protrusion 16 is intended to be easily caught by the male threaded portion 32 when it is loosely fitted to the male threaded portion 32 of the elbow joint 30, and prevents it from being accidentally detached. The illustrated protrusion 16 is formed over the entire inner periphery of the ring member 10, but may be partially formed over the entire periphery.

なお、図２９および図３０には、リング部材１０の変形例であるリング部材１０Ａが示されている。受面上の傾斜部１４と平坦部１５の形成数および当接面上の凸部１１と中間面部１２と基端面部１３の形成数は同数ではあるが、リング部材１０では４であり、リング部材１０Ａでは倍の８である点のみが異なる。 29 and 30 show a ring member 10A which is a modification of the ring member 10. FIG. The number of inclined portions 14 and flat portions 15 on the receiving surface and the number of convex portions 11, intermediate surface portions 12, and base end surface portions 13 on the contact surface are the same, but 4 for the ring member 10. The only difference is that the member 10A is doubled by eight.

図１８から図２３までに示したナット２０は、エルボ継手３０の雄ネジ部３２に螺合させて締込むナットである。ナット２０は、エルボ継手３０の雄ネジ部３２へ締込む際に進行する側の端面となる進行側先端に２つの突起２２が突設されている。ナット２０は、周側面を長手方向に沿って６つの突起部２１が等間隔に形成されている。これら突起部２１は、作業者が手でナット２０を摘んでエルボ継手３０の雄ネジ部３２に締込む際に、ナット２０を容易に掴んで回せるようにしたものである。 The nut 20 shown in FIGS. 18 to 23 is a nut that is screwed into the male thread portion 32 of the elbow joint 30 and tightened. The nut 20 is provided with two protrusions 22 projecting from the advancing tip, which is the end surface of the elbow joint 30 that is advanced when tightened into the male threaded portion 32. The nut 20 has six protruding portions 21 formed at equal intervals along the longitudinal direction on the peripheral side surface. These protrusions 21 are configured so that the operator can easily grasp and turn the nut 20 when the operator grips the nut 20 by hand and tightens the nut 20 into the male threaded portion 32 of the elbow joint 30.

６つの突起部２１のうち、雌ネジ部２３が形成されている内径の直径の対向した位置にある２つの突起部２１は、他の４つの突起部２１よりも進行側に延びており、突起２２と繋がっている。図示した例では突起２２は２つであるが、等間隔に３つ以上を形成してもよい。なお、この突起２２の数は、上記のリング部材１０等の形成数の２以上の約数とするのが好ましい。 Of the six protrusions 21, two protrusions 21 at opposite positions of the diameter of the inner diameter on which the female screw part 23 is formed extend to the advancing side with respect to the other four protrusions 21. 22 is connected. In the illustrated example, the number of the protrusions 22 is two, but three or more may be formed at equal intervals. The number of the protrusions 22 is preferably a divisor of 2 or more of the number of the ring members 10 and the like formed.

次に第１の実施の形態に係る接合構造の作用を説明する。
エルボ継手３０とナット２０の開口端部同士を接合させる場合には、エルボ継手３０の開口端部の外周側に形成された雄ネジ部３２にリング部材１０を遊嵌する。リング部材１０は、当接面がエルボ継手３０の受部３３に対向する向きに遊嵌する。図３３は、エルボ継手３０Ａに管３６を接続し、リング部材１０を遊嵌した状態を示したものである。 Next, the operation of the joint structure according to the first embodiment will be described.
When joining the open ends of the elbow joint 30 and the nut 20, the ring member 10 is loosely fitted to the male screw portion 32 formed on the outer peripheral side of the open end of the elbow joint 30. The ring member 10 is loosely fitted so that the contact surface faces the receiving portion 33 of the elbow joint 30. FIG. 33 shows a state where the pipe 36 is connected to the elbow joint 30A and the ring member 10 is loosely fitted.

遊嵌したナット２０には、内周に突出部１６が形成されており、この突出部１６が雄ネジ部３２に引っかかり易いので、雄ネジ部３２に遊嵌したリング部材１０は不用意に雄ネジ部３２から抜け落ちることはない。このように雄ネジ部３２にリング部材１０を遊嵌させた後にナット２０を雄ネジ部３２に締込む。 The loosely-fitted nut 20 has a protruding portion 16 formed on the inner periphery, and the protruding portion 16 is easily caught by the male screw portion 32. Therefore, the ring member 10 loosely fitted to the male screw portion 32 is inadvertently male. The screw part 32 does not fall out. In this way, after the ring member 10 is loosely fitted to the male screw portion 32, the nut 20 is fastened to the male screw portion 32.

図２４は、ナット２０の締込み過程を示している。この過程は、矢印で示したように紙面上の左端に示した状態から中央の状態へ、さらに右端に示した状態へと進む。
ナット２０の雌ネジ部２３をエルボ継手３０の雄ネジ部３２に螺合させて、ナット２０を締込み始めたときは、ナット２０とリング部材１０は接触していない。さらにナット２０を締込んで行き、締込み量が所定の状態に近づくと、ナット２０の進行側先端の突起２２がリング部材１０の受面側に形成されている登り勾配の傾斜部１４の始端に当接する。ここで、所定の状態の締込み量とは、エルボ継手３０を流れる流体がエルボ継手３０の接合部分から漏れる程には緩くなく、かつ、エルボ継手３０の内部を流れる流体に圧力損失が生じるような変形が発生しない程度の適度な締込み量のことである。 FIG. 24 shows the tightening process of the nut 20. This process proceeds from the state shown at the left end on the paper surface to the center state as shown by the arrow, and further to the state shown at the right end.
When the female screw portion 23 of the nut 20 is screwed into the male screw portion 32 of the elbow joint 30 and the nut 20 starts to be tightened, the nut 20 and the ring member 10 are not in contact with each other. When the nut 20 is further tightened and the tightening amount approaches a predetermined state, the protrusion 22 at the front end of the nut 20 is formed on the receiving surface side of the ring member 10 and the starting end of the inclined portion 14 of the ascending slope is formed. Abut. Here, the tightening amount in a predetermined state is such that the fluid flowing through the elbow joint 30 is not so loose that it leaks from the joint portion of the elbow joint 30 and pressure loss occurs in the fluid flowing inside the elbow joint 30. It is a moderate tightening amount that does not cause any significant deformation.

突起２２が傾斜部１４の始端に当接すると突起２２は傾斜部１４を受部３３の方向に押すが、傾斜部１４の登り勾配の始端が凸部１１の直上に位置するので、リング部材１０に湾曲が生じることがない。このため、突起２２はスムーズに傾斜部１４に載ることができる。 When the protrusion 22 comes into contact with the starting end of the inclined portion 14, the protrusion 22 pushes the inclined portion 14 in the direction of the receiving portion 33, but the starting end of the ascending slope of the inclined portion 14 is located immediately above the convex portion 11. No bending occurs. For this reason, the protrusion 22 can be mounted on the inclined portion 14 smoothly.

突起２２が傾斜部１４に当接しながら傾斜部１４の始端から終端に向かって進む間、突起２２から傾斜部１４に作用する力は連続的に大きくなる。しかし、突起２２の位置がその直下に当接面側の中間面部１２が有る区間では、リング部材１０が肉厚であることもあって湾曲はそれほど大きくはない。 While the protrusion 22 advances from the start end to the end of the inclined portion 14 while contacting the inclined portion 14, the force acting on the inclined portion 14 from the protrusion 22 continuously increases. However, in the section where the position of the protrusion 22 is directly below the intermediate surface portion 12 on the contact surface side, the ring member 10 is thick and the curvature is not so large.

左端に示した状態は、締込みを始めて後、ナット２０の突起２２がリング部材１０の傾斜部１４に当接して中間面部１２の端部の直上手前まで進んだ状態である。この状態で突起２２からは、ナット２０を締込む回転方向の力と受部３３に向かう力が傾斜部１４に作用しているが、リング部材１０は、まだほとんど湾曲していない。 The state shown at the left end is a state in which, after starting tightening, the protrusion 22 of the nut 20 abuts against the inclined portion 14 of the ring member 10 and advances to a position just above the end of the intermediate surface portion 12. In this state, the rotational force for tightening the nut 20 and the force toward the receiving portion 33 are applied to the inclined portion 14 from the protrusion 22, but the ring member 10 has not been curved yet.

次の中央に示した状態は、ナット２０をさらに締込んだ状態を示している。この状態では、突起２２が傾斜部１４の終端に達している。このとき突起２２から傾斜部１４に作用する力は最大近くとなっており、リング部材１０は受部３３方向に大きく湾曲して、中間面部１２の終端部が受部３３に強く押圧されている。 The state shown in the next center shows a state in which the nut 20 is further tightened. In this state, the protrusion 22 reaches the end of the inclined portion 14. At this time, the force acting on the inclined portion 14 from the protrusion 22 is close to the maximum, the ring member 10 is greatly curved in the direction of the receiving portion 33, and the end portion of the intermediate surface portion 12 is strongly pressed against the receiving portion 33. .

この状態では受部３３に押圧されている中間面部１２がストッパの役目を果たしており、ナット２０を締込み方向に回転させても中間面部１２と受部３３との間の摩擦力によってリング部材１０が同方向に回転することはない。なお、この図から明らかなように、突起２２は、その先端と進行側先端の端面との間に最大に湾曲したリング部材１０が収まるだけの間隔が生じる程度に突き出ている。 In this state, the intermediate surface portion 12 pressed by the receiving portion 33 serves as a stopper, and even if the nut 20 is rotated in the tightening direction, the ring member 10 is caused by the frictional force between the intermediate surface portion 12 and the receiving portion 33. Will not rotate in the same direction. As is apparent from this figure, the protrusion 22 protrudes to such an extent that there is an interval enough to accommodate the ring member 10 that is curved to the maximum between its tip and the end face of the traveling side tip.

次の右端に示した図は、さらにナット２０を締込み方向に回転させて突起２２が傾斜部１４の終端から外れた直後の状態を示している。突起２２からリング部材１０が受ける力は、突起２２が傾斜部１４の終端から外れる直前が最大となる。突起２２が傾斜部１４の終端から外れると、突起２２から受けていた力が無くなるので、それまで湾曲していたリング部材１０は、弾性によって一気に元の状態に戻ろうとする。 The figure shown at the next right end shows a state immediately after the nut 20 is further rotated in the tightening direction and the projection 22 is detached from the end of the inclined portion 14. The force that the ring member 10 receives from the protrusion 22 is maximized immediately before the protrusion 22 is detached from the terminal end of the inclined portion 14. When the protrusion 22 is disengaged from the end of the inclined portion 14, the force received from the protrusion 22 is lost. Therefore, the ring member 10 that has been curved so far tries to return to its original state by elasticity.

このとき、リング部材１０の平坦部１５が突起２２に衝突するので大きな衝撃音が発生する。この衝撃音により、作業者はナット２０の締込み量が所定の適度なものとなったことを知ることができる。 At this time, since the flat portion 15 of the ring member 10 collides with the protrusion 22, a large impact sound is generated. From this impact sound, the operator can know that the tightening amount of the nut 20 has become a predetermined appropriate level.

また、突起２２からリング部材１０に作用していた力が一気に無くなることにより、ナット２０を手で回していた作業者は、ナット２０に加えていた力が一気に抜ける感覚と、その僅か直後の平坦部１５と突起２２との衝突による強い衝撃の感覚とを手に感じることができる。これにより、作業者はナット２０の締込み量が所定のものとなったことを知ることができる。このときに手が受ける感覚は大きく確実なものであるので、作業環境が極めて騒々しく上記の衝撃音が聞き取り難いような場合でも、作業者は、確実にナット２０の締込み量が所定のものとなったことを知ることができる。この手が受ける衝撃は、手袋をはめていても感じることができる。 Further, since the force acting on the ring member 10 from the protrusion 22 disappears all at once, the operator who has turned the nut 20 by hand feels that the force applied to the nut 20 is released at once, and the flatness just after that. A strong sense of impact due to the collision between the portion 15 and the protrusion 22 can be felt in the hand. Thus, the operator can know that the tightening amount of the nut 20 has become a predetermined amount. Since the feeling that the hand receives at this time is large and sure, even if the working environment is extremely noisy and it is difficult to hear the above impact sound, the operator can ensure that the tightening amount of the nut 20 is a predetermined amount. You can know what has become a thing. The impact of this hand can be felt even when wearing gloves.

図３４および図３５は、第１の実施の形態に係る接合構造におけるリング部材１０の変形例を示している。図３４に示したように、リング部材１０Ａは、傾斜部１４が傾斜角度の異なる２つの傾斜部１４ａ、１４ｂから成る点のみがリング部材１０と相違する点である。緩傾斜部１４ａは、登り勾配の始端から傾斜角度Ａで形成されている。この緩傾斜部１４ａに連続して急傾斜部１４ｂが傾斜角度Ｂで終端まで形成されている。急傾斜部１４ｂの傾斜角度Ｂは、緩傾斜部１４ａの傾斜角度Ａよりも大きく設定されている。 34 and 35 show a modification of the ring member 10 in the joint structure according to the first embodiment. As shown in FIG. 34, the ring member 10 </ b> A is different from the ring member 10 only in that the inclined portion 14 includes two inclined portions 14 a and 14 b having different inclination angles. The gentle inclined portion 14a is formed at an inclination angle A from the starting end of the climbing gradient. A steeply inclined portion 14b is formed at an inclination angle B to the end of the gently inclined portion 14a. The inclination angle B of the steeply inclined portion 14b is set larger than the inclination angle A of the gently inclined portion 14a.

図３５の（ａ）で示したように、このリング部材１０Ａによれば、ナット２０を締込んでいくときにナット２０の突起２２がリング部材１０Ａに接触し始める位置が急傾斜部１４ｂである場合には、エルボ継手３０の受部３３とナット２０との間隔が広いことと急傾斜部１４ｂの角度が大きいことのため、ナット２０を締込方向に回転させてもリング部材１０Ａは撓まずにナット２０に押されてナット２０の回転方向に回転する。 As shown in FIG. 35A, according to the ring member 10A, the position where the protrusion 22 of the nut 20 starts to contact the ring member 10A when the nut 20 is tightened is the steeply inclined portion 14b. In this case, because the gap between the receiving portion 33 of the elbow joint 30 and the nut 20 is wide and the angle of the steeply inclined portion 14b is large, the ring member 10A does not bend even if the nut 20 is rotated in the tightening direction. The nut 20 is pushed by the nut 20 to rotate in the rotation direction of the nut 20.

ナット２０を締込方向に回転させるにつれてナット２０はリング部材１０Ａに近づくので、ナット２０の突起２２がリング部材１０Ａに接触する位置は、相対的に急傾斜部１４ｂと緩傾斜部１４ａとの角度の変化する位置に移る。この位置は、図３５の（ｃ）に示した位置である。突起２２がこの位置まで移ると、エルボ継手３０の受部３３とナット２０との間隔が狭くなってきており、リング部材１０Ａの凸部１１とエルボ継手３０の受部３３との摩擦力が大きくなるので、リング部材１０Ａが突起２２に押されて回転することがなくなる。 Since the nut 20 approaches the ring member 10A as the nut 20 is rotated in the tightening direction, the position at which the protrusion 22 of the nut 20 contacts the ring member 10A is the angle between the relatively steeply inclined portion 14b and the gently inclined portion 14a. Move to the changing position. This position is the position shown in FIG. When the protrusion 22 moves to this position, the gap between the receiving portion 33 of the elbow joint 30 and the nut 20 is narrowed, and the frictional force between the convex portion 11 of the ring member 10A and the receiving portion 33 of the elbow joint 30 is large. Therefore, the ring member 10A is not rotated by being pushed by the protrusion 22.

したがって、リング部材１０Ａは、受部３３に向かって撓み始める。この撓みにより、急傾斜部１４ｂがナット２０の回転方向に倒れ込み、突起２２は、急傾斜部１４ｂを終端に向かって移動し、急傾斜部１４ｂの終端から外れると撓みが元に戻る動作によって平坦部１５と突起２２とが衝突する。このとき、大きな衝撃音が発生するとともにナット２０を回している作業者の手には衝突による明確な衝撃が伝わる。 Therefore, the ring member 10 </ b> A starts to bend toward the receiving portion 33. Due to this bending, the steeply inclined portion 14b falls in the rotational direction of the nut 20, and the protrusion 22 moves toward the end of the steeply inclined portion 14b, and is flattened by the operation of returning to the original when the steeply inclined portion 14b is disengaged. The part 15 and the protrusion 22 collide. At this time, a large impact sound is generated, and a clear impact due to the collision is transmitted to the hand of the operator turning the nut 20.

図３５の（ｂ）に示したように、ナット２０を締込んでいくときにナット２０の突起２２がリング部材１０Ａに接触し始める位置が緩傾斜部１４ａである場合には、ナット２０の回転によってリング部材１０Ａが撓んでリング部材１０Ａの回転が止まる。さらにナット２０を回転させると、突起２２は、前記のように急傾斜部１４ｂを移動して終端から外れたところで撓みの戻ったリング部材１０Ａの平坦部１５と衝突する。 As shown in FIG. 35B, when the position where the projection 22 of the nut 20 starts to contact the ring member 10A when the nut 20 is tightened is the gently inclined portion 14a, the rotation of the nut 20 is performed. As a result, the ring member 10A is bent and the rotation of the ring member 10A is stopped. When the nut 20 is further rotated, the protrusion 22 collides with the flat portion 15 of the ring member 10A that has returned to its flexure when it has moved along the steeply inclined portion 14b and deviated from the end as described above.

このように、リング部材１０Ａによれば、ナット２０の突起２２がリング部材１０Ａに接触を開始する位置によらず、突起２２がリング部材１０Ａの傾斜部１４をより一層に安定して乗り越えることができる。 As described above, according to the ring member 10A, the protrusion 22 can get over the inclined portion 14 of the ring member 10A more stably regardless of the position where the protrusion 22 of the nut 20 starts to contact the ring member 10A. it can.

次に、本発明の第２の実施の形態について説明する。
図２６は、本発明の第２の実施の形態を示している。
本実施の形態では、リング部材１１０の何れの面を受部３３に当接させても良いようにしたものである。
なお、第１の実施の形態と同種の部位には同一符号を付し重複した説明を省略する。 Next, a second embodiment of the present invention will be described.
FIG. 26 shows a second embodiment of the present invention.
In the present embodiment, any surface of the ring member 110 may be brought into contact with the receiving portion 33.
In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st Embodiment, and the overlapping description is abbreviate | omitted.

リング部材１１０は、ナット２０の進行側先端を受ける受面に、ナット２０を回して締込む際に突起２２に対して登り勾配となる傾斜部１４が形成されている。さらに、傾斜部１４の登り勾配の終端から下がった位置より隣の傾斜部１４の始端まで延びる平坦部１５が形成されている。これらの点は、第１の実施の形態に係るリング部材１０と同じである。 In the ring member 110, an inclined portion 14 is formed on the receiving surface that receives the forward end of the nut 20 so as to have an upward gradient with respect to the protrusion 22 when the nut 20 is turned and tightened. Furthermore, the flat part 15 extended from the position which descended from the terminal of the climbing slope of the inclination part 14 to the starting end of the adjacent inclination part 14 is formed. These points are the same as the ring member 10 according to the first embodiment.

本実施の形態が第１の実施の形態と異なる点は、エルボ継手３０の受部３３に当接する当接面側にも受面側の傾斜部１４および平坦部１５と同様のものを同数形成した点にある。これにより、リング部材１１０は、裏表の別がなく使用することができるので、使い勝手が向上している。また、第１の実施の形態において中間面部１２が果たしていたストッパの役目は、当接面側の傾斜部１４が果たすことになる。 This embodiment is different from the first embodiment in that the same number of the same inclined portions 14 and flat portions 15 on the receiving surface side is formed on the contact surface side that contacts the receiving portion 33 of the elbow joint 30. It is in the point. As a result, the ring member 110 can be used without distinction between the front and back sides, and the usability is improved. Further, the inclined surface 14 on the abutting surface side plays the role of the stopper which the intermediate surface portion 12 has played in the first embodiment.

次に、本発明の第３の実施の形態について説明する。
図２７は、本発明の第３の実施の形態を示している。
本実施の形態におけるリング部材２１０は、当接面側の形状のみが上記各実施の形態とは異なっている。
なお、第１の実施の形態と同種の部位には同一符号を付し重複した説明を省略する。 Next, a third embodiment of the present invention will be described.
FIG. 27 shows a third embodiment of the present invention.
The ring member 210 in the present embodiment is different from the above embodiments only in the shape on the contact surface side.
In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st Embodiment, and the overlapping description is abbreviate | omitted.

リング部材２１０は、当接面側に凸部１１のみが形成されている。本実施の形態の場合は、ナット２０の突起２２が傾斜部１４上を終端に向かって移動すると、リング部材２１０が湾曲して凸部１１と締込み方向の隣の凸部１１との間の平坦部１７が受部３３に押圧される。 As for the ring member 210, only the convex part 11 is formed in the contact surface side. In the case of the present embodiment, when the protrusion 22 of the nut 20 moves on the inclined portion 14 toward the terminal end, the ring member 210 is bent and is formed between the convex portion 11 and the adjacent convex portion 11 in the tightening direction. The flat part 17 is pressed by the receiving part 33.

突起２２が傾斜部１４の終端から外れると、上記の実施の形態と同様に、湾曲したリング部材２１０が元に戻り、平坦部１５が突起２２に衝突する。これにより、作業者は、手に伝わる衝撃等の感覚と、衝撃音とでナット２０の締込み量が適度なものとなったことを知ることができる。 When the protrusion 22 deviates from the end of the inclined portion 14, the curved ring member 210 returns to the original and the flat portion 15 collides with the protrusion 22, as in the above embodiment. Thereby, the operator can know that the amount of tightening of the nut 20 has become appropriate due to the sense of impact transmitted to the hand and the impact sound.

また、本実施の形態に係るリング部材２１０には、受部３３に換えて図示した受部３３Ａを形成した継手と組み合わせることが好ましい。この受部３３Ａは、リング部材２１０を受ける面にストッパ凸部３４が形成されている。 Further, the ring member 210 according to the present embodiment is preferably combined with a joint in which the illustrated receiving portion 33A is formed instead of the receiving portion 33. The receiving portion 33 </ b> A has a stopper convex portion 34 formed on the surface that receives the ring member 210.

ストッパ凸部３４は、リング部材２１０が回転するとリング部材２１０の当接面に形成されている凸部１１にぶつかる位置に突出して形成されている。また、ストッパ凸部３４の長さは凸部１１の長さとほぼ同じである。これにより、ナット２０をエルボ継手３０に締込む際に、ナット２０の突起２２が傾斜部１４上を終端に向かって移動しても凸部１１がストッパ凸部３４に当接するので、リング部材２１０が締込み回転方向に回ってしまうことを確実に防止することができる。 The stopper convex portion 34 is formed so as to protrude at a position where it comes into contact with the convex portion 11 formed on the contact surface of the ring member 210 when the ring member 210 rotates. Further, the length of the stopper projection 34 is substantially the same as the length of the projection 11. Thus, when the nut 20 is tightened into the elbow joint 30, even if the protrusion 22 of the nut 20 moves on the inclined portion 14 toward the terminal end, the convex portion 11 abuts against the stopper convex portion 34. Can be reliably prevented from rotating in the tightening rotation direction.

次に、本発明の第４の実施の形態について説明する。
図２８は、本発明の第４の実施の形態を示している。
本実施の形態におけるリング部材３１０は、当接面側の形状のみが上記各実施の形態とは異なっている。また、リング部材３１０は、受部３３に換えてリング部材３１０のための独自の受部３３Ｂを有する継手に使用される。
なお、第１の実施の形態と同種の部位には同一符号を付し重複した説明を省略する。 Next, a fourth embodiment of the present invention will be described.
FIG. 28 shows a fourth embodiment of the present invention.
The ring member 310 in the present embodiment is different from the above embodiments only in the shape on the contact surface side. The ring member 310 is used for a joint having a unique receiving portion 33B for the ring member 310 in place of the receiving portion 33.
In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st Embodiment, and the overlapping description is abbreviate | omitted.

リング部材３１０は、第３の実施の形態に係るリング部材２１０の当接面と類似しているが凸部１１の少なくとも１つは凸部１１よりも長く突き出た凸部３１１として形成されている。また、受部３３Ｂには、この長い凸部３１１が嵌入するように窪んだストッパ凹部３５が形成されている。このストッパ凹部３５の深さは、ほぼ凸部１１と凸部３１１との長さの差である。 The ring member 310 is similar to the contact surface of the ring member 210 according to the third embodiment, but at least one of the convex portions 11 is formed as a convex portion 311 protruding longer than the convex portion 11. . The receiving portion 33B is formed with a stopper concave portion 35 that is recessed so that the long convex portion 311 is fitted therein. The depth of the stopper recess 35 is substantially the difference in length between the protrusion 11 and the protrusion 311.

したがって、凸部３１１がストッパ凹部３５に嵌入した状態では受部３３Ｂの面とリング部材３１０の当接面とは平行になっている。これにより、ナット２０をエルボ継手３０に締込む際に、ナット２０の突起２２が傾斜部１４上を終端に向かって移動しても凸部３１１がストッパ凹部３５に嵌入するので、リング部材３１０が締込み回転方向に回ってしまうことを確実に防止することができる。 Therefore, the surface of the receiving portion 33 </ b> B and the contact surface of the ring member 310 are parallel in a state where the convex portion 311 is fitted in the stopper concave portion 35. Thus, when the nut 20 is tightened into the elbow joint 30, even if the projection 22 of the nut 20 moves on the inclined portion 14 toward the terminal end, the convex portion 311 is fitted into the stopper concave portion 35, so that the ring member 310 is It is possible to reliably prevent turning in the tightening rotation direction.

次に、本発明の第５の実施の形態について説明する。
図３６は、本発明の第５の実施の形態を示している。
なお、第１の実施の形態と同種の部位には同一符号を付し重複した説明を省略する。 Next, a fifth embodiment of the present invention will be described.
FIG. 36 shows a fifth embodiment of the present invention.
In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st Embodiment, and the overlapping description is abbreviate | omitted.

本実施の形態では、リング部材４１０がエルボ継手３０の受部３３に当接する当接面を凸部等の無い平坦面１８とし、側面を貫通するように穿設された複数の長穴１９を有する点が第１の実施の形態に係るリング部材１０とは異なっている。リング部材４１０を用いた場合には、ナット２０の突起２２が傾斜部１４を登ると、長穴１９が潰れるようにリング部材４１０が撓む。これにより、突起２２が傾斜部１４の終端から外れると撓みが元に戻り、平坦部１５と突起２２との衝突により衝撃と衝撃音とが発生する。 In the present embodiment, the contact surface with which the ring member 410 contacts the receiving portion 33 of the elbow joint 30 is a flat surface 18 without a convex portion or the like, and a plurality of elongated holes 19 drilled so as to penetrate the side surface are provided. The ring member 10 is different from the ring member 10 according to the first embodiment. When the ring member 410 is used, when the protrusion 22 of the nut 20 climbs the inclined portion 14, the ring member 410 is bent so that the long hole 19 is crushed. As a result, when the protrusion 22 is detached from the end of the inclined portion 14, the bending is restored, and an impact and an impact sound are generated due to the collision between the flat portion 15 and the protrusion 22.

第１の実施の形態におけるリング部材１０においては、傾斜部１４の登り勾配が始まる始端は、当接面に形成された凸部１１の直上に位置している。一方、本実施の形態におけるリング部材４１０においては、隣り合う長穴１９，１９の間の直上に位置している。 In the ring member 10 according to the first embodiment, the starting end where the inclination of the inclined portion 14 starts is located immediately above the convex portion 11 formed on the contact surface. On the other hand, in the ring member 410 in the present embodiment, the ring member 410 is located immediately above the adjacent long holes 19.

ところで、エルボ継手３０の受部３３がリング部材を受ける面に稀にキズや凹凸等がある場合に、例えば凸部１１を有するリング部材で有ると凸部１１がキズや凹凸に引っ掛かってしまうこともあり得る。そして、凸部１１がキズや凹凸に引っ掛かってしまうと、リング部材の回転が意図しない段階で強制的に抑制されてしまい、突起２２が意図した状態よりも早い段階で傾斜部を越えることになる。すると、ナット２０の締込み量が不十分な状態であるにもかかわらず、前記の衝撃音や衝撃が発生してしまう。 By the way, when the receiving part 33 of the elbow joint 30 receives a ring member rarely, if the ring member has the convex part 11, for example, the convex part 11 is caught by the scratch or the concave part. There is also a possibility. And if the convex part 11 is caught in a crack or an unevenness | corrugation, rotation of a ring member will be forcedly suppressed in the stage which is not intended, and the protrusion 22 will cross an inclined part in the stage earlier than the intended state. . Then, although the tightening amount of the nut 20 is in an insufficient state, the impact sound and impact are generated.

しかしながら、本実施の形態に係るリング部材４１０によれば、当接面が平坦面１８であるので、受部３３にキズや凹凸があっても、上記のような不都合が生じることはなく、より使い勝手の優れたものとなる。 However, according to the ring member 410 according to the present embodiment, since the contact surface is the flat surface 18, even if the receiving portion 33 has scratches or irregularities, the above-described disadvantage does not occur. It will be easy to use.

以上、本発明の実施の形態を図面によって説明してきたが、具体的な構成は前述したような実施の形態に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。例えば、リング部材１０の中間面部１２は、凸部１１の先端から段差を付けて延びるように示したが、段差を付けずに終端まで延びるようにしてもよい。また、中間面部１２は、凸部１１から連続して延びるものではなく、凸部１１から独立して設けたものであってもよい。 Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to the above-described embodiments, and there are changes and additions within the scope not departing from the gist of the present invention. Are also included in the present invention. For example, although the intermediate surface portion 12 of the ring member 10 is shown as extending from the tip of the convex portion 11 with a step, it may be extended to the end without being stepped. Further, the intermediate surface portion 12 does not extend continuously from the convex portion 11 but may be provided independently from the convex portion 11.

本発明に係る接合構造は、継手とナットの接合に限らず、一方に雄ネジが形成され、他方に雌ネジが形成された開口端部同士の接合であれば、容器の開口と蓋等との接合など広く活用することができる。 The joint structure according to the present invention is not limited to the joint and nut joint, and can be an opening of the container, a lid, etc., as long as it is a joint between open ends where a male screw is formed on one side and a female screw is formed on the other side. Can be used widely.

１０…リング部材
１０Ａ…リング部材
１１…凸部
１２…中間面部
１３…基端面部
１４…傾斜部
１４ａ…緩傾斜部
１４ｂ…急傾斜部
１５…平坦部
１６…突出部
１７…平坦部
１８…平坦面
１９…長穴
２０…ナット
２１…突起部
２２…突起
２３…雌ネジ部
３０…エルボ継手
３０Ａ…エルボ継手
３１…接続管部
３２…雄ネジ部
３３…受部
３３Ａ…受部
３３Ｂ…受部
３４…ストッパ凸部
３５…ストッパ凹部
３６…管
１１０…リング部材
１１０Ａ…リング部材
２１０…リング部材
３１０…リング部材
３１１…凸部
４１０…リング部材 DESCRIPTION OF SYMBOLS 10 ... Ring member 10A ... Ring member 11 ... Convex part 12 ... Intermediate surface part 13 ... Base end surface part 14 ... Inclined part 14a ... Slightly inclined part 14b ... Steeply inclined part 15 ... Flat part 16 ... Protruding part 17 ... Flat part 18 ... Flat Surface 19 ... Slot 20 ... Nut 21 ... Projection 22 ... Projection 23 ... Female thread 30 ... Elbow joint 30A ... Elbow joint 31 ... Connection pipe 32 ... Male thread 33 ... Receiving part 33A ... Receiving part 33B ... Receiving part 34 ... stopper convex part 35 ... stopper concave part 36 ... pipe 110 ... ring member 110A ... ring member 210 ... ring member 310 ... ring member 311 ... convex part 410 ... ring member

Claims

By tightening the female screw part formed on the inner peripheral side of the opening end part of the other member with respect to the male screw part formed on the outer peripheral side of the opening end part of one member, the opening end parts of both members are In the joining structure that joins each other,
A ring member loosely fitted to the male screw portion of the one member so as to be interposed between the one member and the other member;
At least the opening end of the one member and the ring member are elastically deformable,
The other member has a protrusion on the advancing side tip during tightening to the one member,
The one member has a receiving portion for receiving the ring member on a proximal end side of the male screw portion,
The ring member has a convex portion that is formed to protrude toward the contact surface that contacts the receiving portion, and the receiving surface on the side opposite to the contact surface that receives the forward end of the other member is An inclined portion that becomes an ascending gradient with respect to the protrusion when the other member is turned and tightened, and a flat portion that extends from a position descending from the end of the ascending gradient of the inclined portion to the starting end of the adjacent inclined portion,
When the other member is fastened to the one member that interposes the ring member, and the protrusion of the other member climbs the inclined portion of the ring member and comes off the end of the inclined portion, the elastic deformation state is restored. The joining structure, wherein the flat portion collides with the protrusion and is in a predetermined tightening state.

The ring member includes an intermediate surface portion extending from an intermediate position between the front end and the base end of the convex portion toward the adjacent convex portion, and a position where a step is provided from the end portion of the intermediate surface portion. The joint structure according to claim 1, further comprising a base end surface portion extending to an end.

The joining structure according to claim 2, wherein a starting end of an upward slope of the inclined portion is located immediately above the convex portion, and a terminal end is located immediately above the base end face portion.

The joining structure according to claim 2 or 3, wherein the number of the convex portions, the intermediate surface portion, the base end surface portion, the inclined portion, and the flat portion is the same.

The joint structure according to claim 4, wherein the protrusion of the other member is a divisor of 2 or more of the number of formation.

The joint structure according to claim 1, wherein the receiving portion of the one member has a stopper convex portion that abuts on the convex portion and restricts rotation of the ring member.

At least one of the convex portions of the ring member protrudes longer than the other convex portions,
The joint structure according to claim 1, wherein the receiving portion of the one member has a stopper concave portion in which the convex portion longer than the other convex portion is fitted and the rotation of the ring member is restricted.

By tightening the female screw part formed on the inner peripheral side of the opening end part of the other member with respect to the male screw part formed on the outer peripheral side of the opening end part of one member, the opening end parts of both members are In the joining structure that joins each other,
A ring member loosely fitted to the male screw portion of the one member so as to be interposed between the one member and the other member;
At least the opening end of the one member and the ring member are elastically deformable,
The other member has a protrusion on the advancing side tip during tightening to the one member,
The one member has a receiving portion for receiving the ring member on a proximal end side of the male screw portion,
The ring member includes an inclined portion that has an upward slope with respect to the protrusion when the other member is turned and tightened to a receiving surface that receives the forward end of the other member, and an end of the upward slope of the inclined portion. A flat portion extending from the lowered position to the starting end of the adjacent inclined portion, and is in contact with the receiving portion of the one member. And
When the other member is fastened to the one member that interposes the ring member, and the protrusion of the other member climbs the inclined portion of the ring member and comes off the end of the inclined portion, the elastic deformation state is restored. The joining structure, wherein the flat portion collides with the protrusion and is in a predetermined tightening state.

The joining structure according to any one of claims 1 to 8, wherein the ring member has a projecting portion extending in a direction perpendicular to an axial direction on an inner periphery.

The joining structure according to any one of claims 1 to 9, wherein an inclination angle of the inclined portion is increased from the middle of an ascending slope.

The contact surface side of the ring member is a flat surface not having the convex portion,
The joint structure according to any one of claims 1 to 7, wherein a plurality of elongated holes penetrating the side surface are formed.