JP5864164B2 - Fire hose coupling fittings - Google Patents
Fire hose coupling fittings Download PDFInfo
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- JP5864164B2 JP5864164B2 JP2011187580A JP2011187580A JP5864164B2 JP 5864164 B2 JP5864164 B2 JP 5864164B2 JP 2011187580 A JP2011187580 A JP 2011187580A JP 2011187580 A JP2011187580 A JP 2011187580A JP 5864164 B2 JP5864164 B2 JP 5864164B2
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- fitting
- metal
- receiving
- metal fitting
- hose
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- 230000008878 coupling Effects 0.000 title claims description 73
- 238000010168 coupling process Methods 0.000 title claims description 73
- 238000005859 coupling reaction Methods 0.000 title claims description 73
- 239000002184 metal Substances 0.000 claims description 147
- 210000000078 claw Anatomy 0.000 claims description 71
- 238000003780 insertion Methods 0.000 claims description 21
- 230000037431 insertion Effects 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 16
- 230000000694 effects Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000010953 base metal Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 235000005282 vitamin D3 Nutrition 0.000 description 1
- 239000011647 vitamin D3 Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
本発明は、消防ホースの結合金具に関し、特に脱落による危険を回避するための脱落防止機構を備えた消防ホースの結合金具に関する。 The present invention relates to a fire hose coupling fitting, and more particularly, to a fire hose coupling fitting provided with a drop-off prevention mechanism for avoiding danger due to dropping off.
消防隊による消火活動において、消防車から火点まで消防ホースを延長し、消火剤を確実に送る必要がある。
消防ホースと消防車の吐出口、消防ホースと放水ノズル、および消防ホース同士は結合金具によって連結されるものである。消防車からの加圧された水または泡がそれらを通して、放水ノズルに送られ、消火などのために放出される。
日本で販売される結合金具には、差込式、ねじ式、およびツイスト式があるが、差込式の町野式結合金具は構造が簡単で軽量であり、着脱の操作性が優れているため、ほとんどの消防隊で使用している。
In fire fighting activities by the fire brigade, it is necessary to extend the fire hose from the fire engine to the fire point and send the fire extinguisher reliably.
The discharge port of the fire hose and the fire truck, the fire hose and the water discharge nozzle, and the fire hose are connected to each other by a coupling fitting. Pressurized water or foam from the fire engine is sent through them to the water discharge nozzle and released for fire extinguishing and the like.
There are plug-in, screw-type, and twist-type fittings sold in Japan, but the plug-in type Machino-type fittings are simple and lightweight, and have excellent detachability. Used by most fire brigade.
図１２から図１４に町野式結合金具の構造を示す。
結合金具は、受け金具１０と差し金具２０とからなる。
差し金具２０は差し金具本体２１と押し輪２２とから構成される。差し金具本体２１の一方には、受け金具１０の受け金具爪１７との係止のための環状突部２３が設けられ、差し金具本体２１の他方には、鋸刃状断面からなる差し金具用ホース接続部２４が設けられている。押し輪２２は、受け金具爪１７を押しよけるための係止解除用円筒部２２ａと指で押す鍔状操作部２２ｂからなる。係止解除用円筒部２２ａの外径は、差し金具本体２１の環状突部２３の外径よりやや大きい。
FIG. 12 to FIG. 14 show the structure of the Machino type fitting.
The coupling fitting is composed of a receiving fitting 10 and an insertion fitting 20.
The insert 20 is composed of an insert body 21 and a push ring 22. An annular protrusion 23 is provided on one side of the metal fitting body 21 for locking with the metal fitting claw 17 of the metal fitting 10, and the other metal fitting body 21 has a saw blade-shaped cross section for the metal fitting. A hose connection 24 is provided. The push ring 22 includes an unlocking cylindrical portion 22a for pushing the receiving metal pawl 17 and a hook-like operation portion 22b pushed by a finger. The outer diameter of the locking release cylindrical portion 22 a is slightly larger than the outer diameter of the annular protrusion 23 of the metal fitting body 21.
受け金具１０は、受け金具本体１１と、受け金具締め輪１３、爪座１４、受け金具爪１７、爪ばね１５、ゴムバンド１６、およびＯリング１８から構成される。
受け金具締め輪１３、爪座１４、受け金具爪１７、爪ばね１５、ゴムバンド１６、およびＯリング１８は、受け金具本体１１の一方に配置される。受け金具本体１１の他方には、鋸刃状断面からなる受け金具用ホース接続部１２が設けられている。
受け金具爪１７は円周方向に等間隔で複数設けられ、受け金具１０の先端（一方の開口）に向けて斜面を持ち、また、爪座１４に沿って径方向にスライドできる。爪ばね１５は受け金具爪１７を常に中心方向に付勢している。
The receiving bracket 10 includes a receiving bracket main body 11, a receiving bracket fastening ring 13, a claw seat 14, a receiving bracket claw 17, a claw spring 15, a rubber band 16, and an O-ring 18.
The receiving metal fastening ring 13, the claw seat 14, the receiving metal claw 17, the claw spring 15, the rubber band 16, and the O-ring 18 are disposed on one side of the receiving metal body 11. On the other side of the metal fitting body 11, a metal fitting hose connection portion 12 having a saw-tooth cross section is provided.
A plurality of catch claws 17 are provided at equal intervals in the circumferential direction, have a slope toward the tip (one opening) of the catch 10, and can slide in the radial direction along the claw seat 14. The claw spring 15 always urges the receiving metal claw 17 toward the center.
差し金具２０を受け金具１０に差し込む際、差し金具本体２１の先端（一方の開口）の縁は、受け金具爪１７の斜面に当り、爪ばね１５の力を抑え、受け金具爪１７を後退（外方向に移動）させる。よって、差し金具本体２１の先端は、受け金具本体１１の止め部１９まで進み、差し金具本体２１の外周面と受け金具本体１１の内周面とはＯリング１８によってシールされる。その際、差し金具本体２１の環状突部２３は、受け金具爪１７の位置を越えるため、受け金具爪１７は爪ばね１５の力により中心方向に付勢され、元の位置に戻り、結合が完了する。 When inserting the insertion fitting 20 into the receiving fitting 10, the edge of the insertion fitting body 21 (one opening) hits the inclined surface of the receiving fitting claw 17, suppresses the force of the claw spring 15, and retracts the receiving fitting claw 17 ( Move outward). Therefore, the front end of the metal fitting body 21 proceeds to the stopper 19 of the metal fitting body 11, and the outer peripheral surface of the metal fitting body 21 and the inner peripheral surface of the metal fitting body 11 are sealed by the O-ring 18. At this time, since the annular protrusion 23 of the insertion fitting body 21 exceeds the position of the receiving claw 17, the receiving fitting claw 17 is urged toward the center by the force of the claw spring 15, returns to the original position, and is connected. Complete.
結合された金具の解除は、押し輪２２を受け金具１０の方向、つまり差し金具本体２１の環状突部２３の方向に移動させることで行う。押し輪２２を移動させることで、係止解除用円筒部２２ａは受け金具爪１７の斜面に当り、受け金具爪１７を押しよけながら、差し金具２０の環状突部２３まで進む。よって、受け金具爪１７と環状突部２３との引っ掛かりが解消され、結合が解除される。 Release of the combined metal fitting is performed by moving the push ring 22 in the direction of the metal fitting 10, that is, in the direction of the annular protrusion 23 of the metal fitting main body 21. By moving the push ring 22, the locking release cylindrical portion 22 a hits the inclined surface of the receiving metal pawl 17 and proceeds to the annular protrusion 23 of the insertion fitting 20 while preventing the receiving metal pawl 17. Therefore, the catch between the receiving metal pawl 17 and the annular protrusion 23 is eliminated, and the coupling is released.
このように、町野式結合金具は簡単に結合及び解除できる。一方、良好な操作性を持つ反面、金具が結合しても、結合状態を解除する押し輪２２を固定する機構がないため、衝撃やホース移動時の引っ掛かりなどで押し輪２２が解除の方向に動き、受け金具爪１７が外され、ホース接続部２４が離脱してしまう可能性がある。実際、火災現場での消火活動中に放水ノズルとホースの結合金具が離脱したり、ホース延長時に結合金具への衝撃や、階段でホース延長した際に結合金具の押し輪２２が段差に掛かり、ホース接続部２４が離脱したりする場合がある。このような場合、送水が中断され、消火活動に支障が生じてくるだけではなく、結合部の離脱したホースが水の流れで暴れて、まわりの人に危害を加える危険もある。
また、訓練や消火活動中、ホースの圧力を抜かないまま結合金具を解除してしまうヒューマンエラーもあった。
要するに、水や圧縮空気で加圧された消防ホースの結合金具が外部の原因や人の操作ミスで不用意に解除されると、消火活動の支障になるだけでなく、操作者本人や周囲の人に危害を加えることもあるため、それを防ぐことが消防の課題である。
In this way, the Machino type fitting can be easily joined and released. On the other hand, although it has good operability, there is no mechanism for fixing the push ring 22 that releases the coupled state even when the metal fittings are coupled, so that the push ring 22 is released in the direction of release due to impact or hooking when moving the hose. There is a possibility that the metal fitting claw 17 is removed, and the hose connecting portion 24 is detached. In fact, during firefighting activities at the fire site, the joint between the water discharge nozzle and the hose is detached, when the hose is extended, when the hose is extended, when the hose is extended on the stairs, In some cases, the hose connection portion 24 may be detached. In such a case, not only water supply is interrupted and fire fighting activities are hindered, but there is also a risk that the hose from which the joint has been detached becomes violent due to the flow of water, causing harm to others.
In addition, during training and fire fighting activities, there was also a human error that released the fittings without releasing the hose pressure.
In short, if a fire hose fitting that has been pressurized with water or compressed air is inadvertently released due to an external cause or a human error, it will not only hinder fire fighting activities, but also the operator and the surroundings. Since it can harm people, preventing it is a challenge for fire fighting.
近年、水と泡の放射が簡単に切り替えられ、Ａ火災とＢ火災を効率よく対応できる圧縮空気泡消火システム（ＣＡＦＳ）を搭載する消防車が増えている。ＣＡＦＳ車は従来のポンプ車よりさまざまな火災に対応でき、効率よく消火できる反面、圧縮空気泡を使用しているため、結合金具が不用意に解除された場合、多くのエネルギーを持つ圧縮空気泡が噴出し、水の場合に比べ、周囲により大きい危害を与える可能性がある。従って、消防ホースの結合金具の不用意解除を防止することが急務である。
特許文献１は、押し輪２２が障害物に引っ掛かることにより結合が不用意に解除されることを防ぐ方法を提示している。つまり、差し金具２０と受け金具１０の外周に押し輪２２の外径よりも大きい外径を持つカバー部材を取り付けることにより、押し輪２２が地面や障害物に簡単に接触できない。
また特許文献２や特許文献３では、差し金具２０の押し輪２２と受け金具１０の締め輪との間に押し輪２２の動きを制限するロック部材を入れることにより、結合金具の不用意解除を防止する方法を提示している。
In recent years, the number of fire engines equipped with a compressed air bubble extinguishing system (CAFS) that can easily switch between radiation of water and bubbles and efficiently handle A fire and B fire has increased. CAFS vehicles can cope with various fires than conventional pump vehicles, and can be effectively extinguished. However, since compressed air bubbles are used, compressed air bubbles that have a lot of energy when the fittings are released carelessly. May erupt and cause more harm to the environment than water. Accordingly, there is an urgent need to prevent inadvertent release of the fire hose coupling fitting.
Patent Document 1 presents a method for preventing the coupling from being inadvertently released due to the push wheel 22 being caught by an obstacle. That is, by attaching a cover member having an outer diameter larger than the outer diameter of the push ring 22 to the outer periphery of the insertion fitting 20 and the receiving fitting 10, the push ring 22 cannot easily contact the ground or an obstacle.
Moreover, in patent document 2 and patent document 3, the lock member which restrict | limits the motion of the push ring 22 between the push ring 22 of the metal fitting 20 and the fastening ring of the receiving metal fitting 10 is put, and unintentional cancellation | release of a coupling metal fitting is performed. It presents a way to prevent it.
しかし、特許文献１によると、結合金具の重量と体積が増え、操作性が損なわれ、コストも増加する。また、ヒューマンエラーによる結合の誤解除を防止することができない。
また、特許文献２や特許文献３では、ホースの移動中に押し輪が障害物に引っ掛かったことによる結合金具の離脱を防止することができるが、誤操作による不用意の離脱を防ぐことができない。また、ロック部材を取り付けることは、一刻一秒を争う消防活動にとっては、手間の掛かるものであり、ホースの操作性を損なうものである。さらに、ヒューマンエラーとして取り付け忘れることもあり得る。
However, according to Patent Document 1, the weight and volume of the fitting are increased, the operability is impaired, and the cost is also increased. In addition, it is impossible to prevent erroneous cancellation of coupling due to human error.
Moreover, in patent document 2 and patent document 3, although the detachment | attachment of the coupling metal fitting by the push ring being caught by the obstruction during the movement of the hose can be prevented, the careless detachment by an erroneous operation cannot be prevented. In addition, attaching the lock member is troublesome for fire fighting activities that compete for one second every second, and impairs the operability of the hose. Furthermore, it is possible to forget to attach as a human error.
本発明の解決しようとする課題は、上述した従来の技術の問題を解決し、消防ホースを引きずる時における障害物による結合金具の解除やホース加圧時における人の誤操作による結合金具の解除を防止することができ、かつ、付き加える部材も追加手間もなく、従来の優れた操作性を損なうことがなく、より効率かつ安全に消火活動を行える消防ホース用結合金具を提供することである。 The problem to be solved by the present invention is to solve the above-mentioned problems of the prior art, and to prevent the release of the joint metal fittings due to obstacles when dragging the fire hose or the release of the joint metal fittings due to human error during the hose pressurization. Another object is to provide a fire hose coupling fitting that can be fire-extinguishing more efficiently and safely without compromising the conventional excellent operability without additional members and additional labor.
請求項１記載の本発明の消防ホースの結合金具は、差し金具と受け金具とからなり、前記差し金具が、一方に環状突部を、他方に差し金具用ホース接続部を、前記環状突部と前記差し金具用ホース接続部との間に摺動円筒部を、それぞれ設けた差し金具本体と、前記摺動円筒部でスライド可能な押し輪とを有し、前記受け金具が、一方に受け金具爪を、他方に受け金具用ホース接続部を、それぞれ設けた受け金具本体と、前記受け金具爪を前記受け金具本体の中心軸線の方向に付勢する爪ばねとを有し、前記環状突部を、前記受け金具爪を越える位置まで、前記受け金具本体の一方から挿入することで前記差し金具と前記受け金具を結合し、前記押し輪を、前記摺動円筒部に沿ってスライドさせて前記受け金具に挿入し、前記受け金具爪の係止解除用斜面に当接させ、前記押し輪によって前記係止解除用斜面を押圧することで前記受け金具爪を外方に押しよけて、前記受け金具爪と前記環状突部との係止を解除することで、前記差し金具と前記受け金具との結合を解除するように構成された消防ホースの結合金具において、前記環状突部の前記差し金具用ホース接続部側端面には、斜面を形成する係止ロック用溝を設け、前記受け金具爪には、前記斜面と当接する突起を設け、前記差し金具の中心軸線に対する前記係止ロック用溝の前記斜面の角度をαとした時に、０°＜α＜９０°とし、前記差し金具本体の中心軸線に対する前記係止解除用斜面の角度をβとした時に、β＜αとしたことを特徴とする。
請求項２記載の本発明の消防ホースの結合金具は、差し金具と受け金具とからなり、前記差し金具が、一方に環状突部を、他方に差し金具用ホース接続部を、前記環状突部と前記差し金具用ホース接続部との間に摺動円筒部を、それぞれ設けた差し金具本体と、前記摺動円筒部でスライド可能な押し輪とを有し、前記受け金具が、一方に受け金具爪を、他方に受け金具用ホース接続部を、それぞれ設けた受け金具本体と、前記受け金具爪を前記受け金具本体の中心軸線の方向に付勢する爪ばねとを有し、前記環状突部を、前記受け金具爪を越える位置まで、前記受け金具本体の一方から挿入することで前記差し金具と前記受け金具を結合し、前記押し輪を、前記摺動円筒部に沿ってスライドさせて前記受け金具に挿入し、前記受け金具爪の係止解除用斜面に当接させ、前記押し輪によって前記係止解除用斜面を押圧することで前記受け金具爪を外方に押しよけて、前記受け金具爪と前記環状突部との係止を解除することで、前記差し金具と前記受け金具との結合を解除するように構成された消防ホースの結合金具において、前記環状突部の前記差し金具用ホース接続部側端面には、斜面を形成する係止ロック用溝を設け、前記受け金具爪には、前記斜面と当接する突起を設け、前記摺動円筒部の外周面に本体側滑り止め溝を設け、前記本体側滑り止め溝を横断するキー溝を形成し、前記キー溝の両端が前記本体側滑り止め溝の幅を超えるように付設したことを特徴とする。
請求項３記載の本発明は、請求項１に記載の消防ホースの結合金具において、前記摺動円筒部の外周面に本体側滑り止め溝を設けたことを特徴とする。
請求項４記載の本発明は、請求項２又は請求項３に記載の消防ホースの結合金具において、前記押し輪の内周面の端部に押し輪側滑り止め溝を設けたことを特徴とする。
請求項５記載の本発明は、請求項１から請求項４のいずれかに記載の消防ホースの結合金具において、前記突起を、三角形、台形、又は半円形の断面形状としたことを特徴とする。
請求項６記載の本発明は、請求項４に記載の消防ホースの結合金具において、前記本体側滑り止め溝又は前記押し輪側滑り止め溝を、三角形、台形、又は波状の断面形状としたことを特徴とする。
The fire hose coupling fitting of the present invention according to claim 1 comprises a fitting and a receiving fitting, wherein the fitting has an annular projection on one side, and a hose connection portion for the fitting on the other side, and the annular projection. And a metal fitting body provided with a sliding cylindrical portion between the metal fitting hose connecting portion and a push ring slidable on the sliding cylindrical portion, and the metal fitting is received on one side. A metal fitting provided with a metal fitting claw and a metal fitting hose connecting portion on the other side, and a claw spring for urging the metal fitting claw in the direction of the central axis of the metal fitting main body, The part is inserted from one side of the base metal body to a position beyond the base metal claws to join the metal fitting and the base metal, and the push ring is slid along the sliding cylindrical part. Insert into the receiving bracket, Abutting against the slope for release, pressing the slope for releasing the lock with the push ring prevents the catch claws from pushing outward, and the catch between the catch claws and the annular protrusion is locked. In the fire hose coupling fitting configured to release the coupling between the metal fitting and the metal fitting by releasing, a slope is formed on the end surface of the annular protrusion on the side of the hose connection portion for the metal fitting When the locking claw is provided with a projection that contacts the inclined surface, and the angle of the inclined surface of the locking lock groove with respect to the central axis of the fitting is α, Β <α, where ° <α <90 ° and β is the angle of the slope for releasing the lock relative to the central axis of the metal fitting body .
The fire hose coupling fitting of the present invention according to claim 2 comprises a fitting and a receiving fitting, wherein the fitting has an annular protrusion on one side, a hose connection part for the insertion fitting on the other, and the annular protrusion. And a metal fitting body provided with a sliding cylindrical portion between the metal fitting hose connecting portion and a push ring slidable on the sliding cylindrical portion, and the metal fitting is received on one side. A metal fitting provided with a metal fitting claw and a metal fitting hose connecting portion on the other side, and a claw spring for urging the metal fitting claw in the direction of the central axis of the metal fitting main body, The part is inserted from one side of the base metal body to a position beyond the base metal claws to join the metal fitting and the base metal, and the push ring is slid along the sliding cylindrical part. Insert into the receiving bracket, Abutting against the slope for release, pressing the slope for releasing the lock with the push ring prevents the catch claws from pushing outward, and the catch between the catch claws and the annular protrusion is locked. In the fire hose coupling fitting configured to release the coupling between the metal fitting and the metal fitting by releasing, a slope is formed on the end surface of the annular protrusion on the side of the hose connection portion for the metal fitting A locking lock groove is provided, a protrusion that contacts the inclined surface is provided on the catch tab, a main body side anti-slip groove is provided on an outer peripheral surface of the sliding cylindrical portion, and the main body side anti-slip groove is crossed. The key groove is formed, and both ends of the key groove are provided so as to exceed the width of the main body side non-slip groove.
According to a third aspect of the present invention, in the fire hose coupling fitting according to the first aspect, a main body side non-slip groove is provided on the outer peripheral surface of the sliding cylindrical portion.
According to a fourth aspect of the present invention, there is provided the fire hose coupling fitting according to the second or third aspect, wherein a push ring side non-slip groove is provided at an end of the inner peripheral surface of the push ring. To do.
According to a fifth aspect of the present invention, in the fire hose coupling fitting according to any one of the first to fourth aspects, the protrusion has a triangular, trapezoidal, or semicircular cross-sectional shape. .
The present invention 請 Motomeko 6 wherein, in the fitting of the fire hose of claim 4, said body side-slip groove or the press wheel side slip grooves and triangular, trapezoidal, or wavy cross-sectional shape It is characterized by that .
以上に示すように、本発明に係る消防ホースの結合金具によれば、従来の結合金具の優れた操作性を維持しながら、加圧時の誤操作による結合金具の離脱と、ホース移動中における障害物による結合金具の離脱を防ぐことができる。よって、結合金具の不用意の離脱によるホースの暴れなどの危険を回避でき、より安全で迅速な消防活動を実施できる。 As shown in the following, according to the fitting of the fire hose of the present invention, while maintaining excellent operability of the conventional fitting, and withdrawal of the fitting due to erroneous operation of the pressurization, in the hose moves It is possible to prevent the coupling metal from being detached due to an obstacle. Therefore, it is possible to avoid dangers such as a hose rampage due to careless removal of the fittings, and to implement a safer and quicker fire fighting activity.
本発明の第１の実施の形態による消防ホースの結合金具は、環状突部の差し金具用ホース接続部側端面には、斜面を形成する係止ロック用溝を設け、受け金具爪には、斜面と当接する突起を設け、差し金具の中心軸線に対する係止ロック用溝の斜面の角度をαとした時に、０°＜α＜９０°とし、差し金具本体の中心軸線に対する係止解除用斜面の角度をβとした時に、β＜αとしたものである。本実施の形態によれば、ホースが加圧されると、差し金具と受け金具が離脱の方向に動き、係止ロック用溝によって形成された斜面と受け金具爪に加工された突起による斜面が相互にかみ合い、結合状態がロックされるため、ホースの使用状態において、誤操作や外部の引っ掛かりなどによる不用意の離脱が防止できる。一方で、ホースが加圧されない未使用時には、ロックされないために離脱操作を容易に行うことができる。また、係止ロック用溝の斜面の角度αの設定によってロックされる強さを調整できる。また、結合の解除操作を容易に行うことができる。 The firefighting hose coupling fitting according to the first embodiment of the present invention is provided with a locking lock groove that forms an inclined surface on the end face of the hose connection portion of the annular protrusion, and Protrusion that abuts the inclined surface , and when the angle of the inclined surface of the locking lock groove with respect to the center axis of the metal fitting is α, 0 ° <α <90 °, and the inclined surface for releasing the locking with respect to the central axis of the metal fitting body Β <α, where β is the angle . According to the present embodiment, when the hose is pressurized, the metal fitting and the metal fitting move in the direction of detachment, and the slope formed by the locking lock groove and the slope formed by the projection processed into the metal fitting claw Since they are engaged with each other and the coupled state is locked, inadvertent detachment due to an erroneous operation or an external catch can be prevented in the use state of the hose. On the other hand, when the hose is not pressurized and is not used, the hose is not locked and can be easily detached. Further, the locking strength can be adjusted by setting the angle α of the slope of the locking lock groove. In addition, the release operation of the connection can be easily performed.
本発明の第２の実施の形態による消防ホースの結合金具は、環状突部の差し金具用ホース接続部側端面には、斜面を形成する係止ロック用溝を設け、受け金具爪には、斜面と当接する突起を設け、摺動円筒部の外周面に本体側滑り止め溝を設け、本体側滑り止め溝を横断するキー溝を形成し、キー溝の両端が本体側滑り止め溝の幅を超えるように付設したものである。本実施の形態によれば、ホースが加圧されると、差し金具と受け金具が離脱の方向に動き、係止ロック用溝によって形成された斜面と受け金具爪に加工された突起による斜面が相互にかみ合い、結合状態がロックされるため、ホースの使用状態において、誤操作や外部の引っ掛かりなどによる不用意の離脱が防止できる。一方で、ホースが加圧されない未使用時には、ロックされないために離脱操作を容易に行うことができる。また、ホースの使用状態において、外部の引っ掛かりによる離脱を防止できる。また、キー溝に付着した砂や粉塵を除去する場合、ブラシや布等を溝に押し当てたまま、外周に沿って移動させることで、砂や粉塵を本体側滑り止め溝からキー溝に追い出し、容易に砂や粉塵を除去することができる。The fire hose coupling fitting according to the second embodiment of the present invention is provided with a locking lock groove that forms an inclined surface on the end face of the hose connection portion of the annular fitting of the annular protrusion, Protrusions that come into contact with the slopes are provided, body-side anti-slip grooves are provided on the outer peripheral surface of the sliding cylindrical portion, key grooves that cross the body-side anti-slip grooves are formed, and both ends of the key grooves are the width of the body-side anti-slip grooves. It is attached so as to exceed. According to the present embodiment, when the hose is pressurized, the metal fitting and the metal fitting move in the direction of detachment, and the slope formed by the locking lock groove and the slope formed by the projection processed into the metal fitting claw Since they are engaged with each other and the coupled state is locked, inadvertent detachment due to an erroneous operation or an external catch can be prevented in the use state of the hose. On the other hand, when the hose is not pressurized and is not used, the hose is not locked and can be easily detached. Further, it is possible to prevent the hose from being detached due to an external catch in the usage state. Also, when removing sand and dust adhering to the key groove, move sand and dust from the non-slip groove on the main unit to the key groove by moving the brush or cloth along the outer periphery while pressing it against the groove. Can easily remove sand and dust.
本発明の第３の実施の形態は、第１の実施の形態による消防ホースの結合金具において、摺動円筒部の外周面に本体側滑り止め溝を設けたものである。本実施の形態によれば、ホースの使用状態において、外部の引っ掛かりによる離脱を防止できる。 According to a third embodiment of the present invention, in the fire hose coupling fitting according to the first embodiment, a main body side non-slip groove is provided on the outer peripheral surface of the sliding cylindrical portion. According to the present embodiment, it is possible to prevent the hose from being detached due to an external catch in the usage state.
本発明の第４の実施の形態は、第２又は第３の実施の形態による消防ホースの結合金具において、押し輪の内周面の端部に押し輪側滑り止め溝を設けたものである。本実施の形態によれば、ホースの使用状態において、外部の引っ掛かりによる離脱を更に確実に防止できる。 In the fourth embodiment of the present invention, in the fire hose coupling fitting according to the second or third embodiment, a push wheel side non-slip groove is provided at the end of the inner peripheral surface of the push wheel. . According to the present embodiment, it is possible to further reliably prevent detachment due to an external catch when the hose is in use.
本発明の第５の実施の形態は、第１から第４の実施の形態による消防ホースの結合金具において、突起を、三角形、台形、又は半円形の断面形状としたものである。本実施の形態によれば、ホースの使用状態において、外部の引っ掛かりによる離脱を更に確実に防止できる。 According to a fifth embodiment of the present invention, in the fire hose coupling fitting according to the first to fourth embodiments, the protrusion has a triangular, trapezoidal, or semicircular cross-sectional shape. According to the present embodiment, it is possible to further reliably prevent detachment due to an external catch when the hose is in use .
本発明の第６の実施の形態は、第４の実施の形態による消防ホースの結合金具において、本体側滑り止め溝又は押し輪側滑り止め溝を、三角形、台形、又は波状の断面形状としたものである。本実施の形態によれば、外部の引っ掛かりによる離脱を更に確実に防止できる。 According to a sixth embodiment of the present invention, in the fire hose coupling fitting according to the fourth embodiment, the main body side anti-skid groove or the push wheel side anti-slip groove has a triangular, trapezoidal, or wavy cross-sectional shape. Is. According to the present embodiment, it is possible to more reliably prevent detachment due to an external catch .
以下、本発明の一実施例による消防ホースの結合金具を図面に基づいて説明する。
図１は本実施例による消防ホースの結合金具を離脱させた状態（ただし押し輪を図示せず）の半断面図、図２は同実施例による消防ホースの結合金具を結合させた状態の半断面図、図３は同実施例による消防ホースの結合金具の要部断面図、図４は同実施例による消防ホースの結合金具に用いる押し輪の半断面図、図５は同実施例による消防ホースの結合金具の動作状態を示す要部断面図である。なお、従来例と同一機能部材には、同一符号を付して説明を一部省略する。
Below, a description will be given of a fitting of the fire hose according to an embodiment of the present invention with reference to the drawings.
FIG. 1 is a half cross-sectional view of a fire hose coupling fitting according to this embodiment in a detached state (however, a push ring is not shown), and FIG. 2 is a half view of a fire hose coupling fitting according to this embodiment joined. Sectional view, FIG. 3 is a sectional view of the main part of a fire hose coupling fitting according to the embodiment, FIG. 4 is a half sectional view of a press ring used in the fire hose coupling fitting according to the embodiment, and FIG. It is principal part sectional drawing which shows the operation state of the coupling fitting of a hose. Note that members having the same functions as those in the conventional example are denoted by the same reference numerals, and a part of the description is omitted.
本実施例による消防ホースの結合金具は、差し金具２０と受け金具１０とからなる。
差し金具本体２１は、一方に環状突部２３を、他方に差し金具用ホース接続部２４を、環状突部２３と差し金具用ホース接続部２４との間に摺動円筒部２５をそれぞれ設けている。
図４に示す押し輪２２は、図１に示す摺動円筒部２５でスライド可能に設けている。
受け金具本体１１は、一方に受け金具爪１７を、他方に受け金具用ホース接続部１２をそれぞれ設けている。爪ばね１５は、受け金具爪１７を受け金具本体１１の中心軸線Ｘ１の方向に付勢する。
The fire hose coupling fitting according to the present embodiment is composed of an insertion fitting 20 and a receiving fitting 10.
The metal fitting body 21 has an annular projection 23 on one side, a metal fitting hose connection portion 24 on the other side, and a sliding cylindrical portion 25 between the annular projection 23 and the metal fitting hose connection portion 24. Yes.
4 is provided so as to be slidable by the sliding cylindrical portion 25 shown in FIG.
The metal fitting body 11 is provided with a metal fitting claw 17 on one side and a metal fitting hose connection portion 12 on the other side. The claw spring 15 biases the receiving metal claw 17 in the direction of the central axis X1 of the metal fitting body 11.
図２に示すように、差し金具２０と受け金具１０は、受け金具爪１７を越える位置まで、環状突部２３を、受け金具本体１１の一方の開口から挿入する。すなわち、差し金具本体２１の先端の環状突部２３は、受け金具爪１７の係止解除用斜面１７ａに当り、爪ばね１５の力を抑え、受け金具爪１７を後退させる。よって、環状突部２３の先端は受け金具本体１１の止め部１９まで進み、Ｏリング１８によってシールされる。その際、差し金具本体２１の環状突部２３は受け金具爪１７を越えるため、受け金具爪１７が爪ばね１５の力により中心軸線Ｘ１の方向に進み、元の位置に戻る。よって、差し金具本体２１の環状突部２３が受け金具爪１７に係止され、結合が完了する。
差し金具２０と受け金具１０との結合の解除は、押し輪２２を、摺動円筒部２５に沿ってスライドさせて受け金具１０に挿入し、受け金具爪１７の係止解除用斜面１７ａに当接させ、押し輪２２によって係止解除用斜面１７ａを押圧することで受け金具爪１７を外方に押しよけて、受け金具爪１７と環状突部２３との係止を解除することで行われる。
本実施例による消防ホースの結合金具は、環状突部２３の差し金具用ホース接続部側端面２３ａには、斜面２３ｂを形成する係止ロック用溝２３ｃを設け、受け金具爪１７には、斜面２３ｂと当接する突起１７ｂを設けている。
As shown in FIG. 2, the insertion fitting 20 and the receiving fitting 10 insert the annular protrusion 23 from one opening of the receiving fitting main body 11 to a position beyond the receiving fitting claw 17. That is, the annular protrusion 23 at the tip of the metal fitting body 21 hits the locking release inclined surface 17 a of the metal fitting claw 17, suppresses the force of the claw spring 15, and retracts the metal fitting claw 17. Therefore, the tip of the annular protrusion 23 advances to the stopper 19 of the metal fitting body 11 and is sealed by the O-ring 18. At that time, since the annular protrusion 23 of the metal fitting main body 21 exceeds the metal fitting claw 17, the metal fitting claw 17 advances in the direction of the central axis X1 by the force of the claw spring 15, and returns to the original position. Therefore, the annular protrusion 23 of the metal fitting main body 21 is locked to the metal fitting claw 17, and the coupling is completed.
To release the coupling between the metal fitting 20 and the metal fitting 10, the push ring 22 is slid along the sliding cylindrical portion 25 and inserted into the metal fitting 10, so that it contacts the locking release inclined surface 17 a of the metal fitting claw 17. By pressing the locking release inclined surface 17a with the push ring 22, the receiving metal claws 17 are pushed outward, and the locking between the receiving metal claws 17 and the annular protrusion 23 is released. Is called.
The fire hose coupling fitting according to the present embodiment is provided with a locking lock groove 23c that forms an inclined surface 23b on the end face 23a of the annular protrusion 23 on the side of the hose connecting portion for the insertion fitting. A protrusion 17b that abuts against 23b is provided.
差し金具２０の中心軸線Ｘ２に対する係止ロック用溝２３ｃの斜面２３ｂの角度αは、０°＜α＜９０°の範囲であり、４５°としている。また、この斜面２３ｂと当接する突起１７ｂの斜面についても、係止ロック用溝２３ｃの斜面２３ｂの角度αと同じ角度としている。
差し金具本体２１の中心軸線Ｘ２に対する係止解除用斜面１７ａの角度をβとした時に、β＜αとしている。
受け金具爪１７は受け金具１０の円周方向に等間隔で３つ設けられ、受け金具１０の入口に向けて係止解除用斜面１７ａを持ち、また、爪座１４に沿って半径方向にスライドできる。爪ばね１５は受け金具爪１７に対して常に中心軸線Ｘ２の方向に動く力をかけている。
The angle α of the inclined surface 23b of the locking lock groove 23c with respect to the center axis X2 of the metal fitting 20 is in the range of 0 ° <α <90 ° and is 45 °. Further, the slope of the protrusion 17b that comes into contact with the slope 23b is also set to the same angle α as the angle α of the slope 23b of the locking lock groove 23c.
When the angle of the locking release inclined surface 17a with respect to the central axis X2 of the metal fitting body 21 is β, β <α.
Three catch claws 17 are provided at equal intervals in the circumferential direction of the catch bracket 10, have a locking release slope 17 a toward the entrance of the catch bracket 10, and slide in the radial direction along the pawl seat 14. it can. The claw spring 15 always applies a force that moves in the direction of the central axis X2 to the receiving metal claw 17.
ホースが加圧されると、差し金具２０と受け金具１０が離脱の方向に動き、係止ロック用溝２３ｃによって形成された斜面２３ｂと受け金具爪１７に加工された突起１７ｂによる斜面が相互にかみ合い、結合状態がロックされる。
ホースに圧力が掛からない状態において、結合された金具を解除する時、従来の通り、押し輪２２の鍔状操作部２２ｂを指で受け金具１０の方向、つまり差し金具本体２１の環状突部２３の方向に押すと、押し輪２２の係止解除用円筒部２２ａは受け金具爪１７に加工された突起１７ｂによる斜面に当り、受け金具爪１７を押しよけながら、差し金具２０の環状突部２３まで進む。よって、受け金具爪１７と環状突部２３との引っ掛かりが解消され、結合が解除される。
また、ホースの非加圧時における結合金具の離脱対策として、押し輪２２の係止解除用円筒部２２ａの内周面の両端には、微細な溝による押し輪側滑り止め溝２２ｃを加工し、差し金具本体２１の摺動円筒部２５の外周面には、微細の溝による本体側滑り止め溝２５ａを加工した。
When the hose is pressurized, the insertion fitting 20 and the receiving fitting 10 move in the direction of detachment, and the inclined face 23b formed by the locking lock groove 23c and the inclined face formed by the protrusion 17b formed on the receiving fitting claw 17 are mutually connected. Engage and join state is locked.
When releasing the joined metal fittings in a state where no pressure is applied to the hose, the hook-like operation portion 22b of the push ring 22 is moved with the finger in the direction of the receiving fitting 10, that is, the annular protrusion 23 of the metal fitting body 21 as before. When the pusher 22 is pushed in the direction, the cylindrical portion 22 a for releasing the lock of the push ring 22 hits the inclined surface of the projection 17 b formed on the catch claw 17, and while pressing the catch claw 17, Proceed to 23. Therefore, the catch between the receiving metal pawl 17 and the annular protrusion 23 is eliminated, and the coupling is released.
Further, as a countermeasure against detachment of the coupling fitting when the hose is not pressurized, a push ring side non-slip groove 22c by a minute groove is processed at both ends of the inner peripheral surface of the locking release cylinder portion 22a. On the outer peripheral surface of the sliding cylindrical portion 25 of the metal fitting main body 21, a main body side non-slip groove 25a formed by a fine groove was processed.
図５に示すように、押し輪２２の鍔状操作部２２ｂが障害物に引っ掛かり、押し輪２２が一方側の受力状態になると、係止解除用円筒部２２ａの先端の一方が浮き上がり、他方が差し金具本体２１の外周にくい込むようになる。また、係止解除用円筒部２２ａの後部も同様な現象が起きる。そこで押し輪側滑り止め溝２２ｃや本体側滑り止め溝２５ａを施すと、係止解除用円筒部２２ａの内周と差し金具本体２１が互いに係止できるようになり、一方に加えられた障害物の力は滑り止めの効果をもたらすようになる。よって、障害物による結合金具の不用意の離脱を防ぐことができる。 As shown in FIG. 5, when the hook-shaped operation portion 22b of the push wheel 22 is caught by an obstacle and the push wheel 22 is in a state of receiving force on one side, one end of the locking release cylindrical portion 22a is lifted, and the other Becomes difficult to insert into the outer periphery of the metal fitting body 21. The same phenomenon occurs in the rear portion of the locking release cylindrical portion 22a. Therefore, if the push-wheel-side anti-slip groove 22c and the main-body-side anti-slip groove 25a are provided, the inner periphery of the unlocking cylindrical portion 22a and the metal fitting body 21 can be locked to each other, and an obstacle added to one side The power of will come to have a non-slip effect. Therefore, careless detachment of the coupling fitting due to an obstacle can be prevented.
図６に、本発明の他の実施例による消防ホースの結合金具を示す。
図６は本実施例による消防ホースの結合金具に用いる差し金具の半断面図であり、押し輪を外した状態を示している。押し輪２２及び受け金具１０については上記実施例と同一であるので説明を省略する。また、従来例と同一機能部材には、同一符号を付して説明を一部省略する。
本実施例では、複数条の本体側滑り止め溝２５ａを横断するキー溝２５ｂを形成し、キー溝２５ｂの両端が本体側滑り止め溝２５ａの幅を超えるように付設している。
キー溝２５ｂに付着した砂や粉塵を除去する場合には、ブラシや布等を溝に押し当てたまま、外周に沿って移動させることで、砂や粉塵を本体側滑り止め溝２５ａからキー溝２５ｂに追い出し、容易に砂や粉塵を除去することができる。
FIG. 6 shows a fire hose coupling fitting according to another embodiment of the present invention.
FIG. 6 is a half cross-sectional view of a fitting used for a fire hose coupling fitting according to the present embodiment, showing a state where a push ring is removed. Since the push ring 22 and the receiving metal fitting 10 are the same as those in the above embodiment, the description thereof is omitted. The same functional members as those in the conventional example are denoted by the same reference numerals, and a part of the description is omitted.
In the present embodiment, a key groove 25b that crosses the plurality of main body side anti-slip grooves 25a is formed, and both ends of the key groove 25b are attached so as to exceed the width of the main body side anti-slip grooves 25a.
When removing sand and dust adhering to the key groove 25b, the sand or dust is moved from the main body side non-slip groove 25a to the key groove by moving along the outer periphery while pressing a brush or cloth against the groove. 25b and can easily remove sand and dust.
図７にホース圧力（放水圧力）とホースの軸方向にかかった引張力との関係を示す。この引張力は結合金具を離脱させる方向に働く。放水圧力は一般的に０．３Mpａ以上であり、それに対応する呼称６５ｍｍと５０ｍｍのホースの引張力はそれぞれ７２０Ｎと１１００Ｎ以上である。係止ロック用溝２３ｃによって形成された斜面２３ｂと受け金具爪１７に加工された突起１７ｂによる斜面が相互にかみ合うことにより、このホース加圧時の引張力を利用して金具同士の結合状態をロックすることができる。 FIG. 7 shows the relationship between the hose pressure (water discharge pressure) and the tensile force applied in the axial direction of the hose. This tensile force acts in a direction to release the coupling fitting. The discharge pressure is generally 0.3 Mpa or more, and the corresponding tensile forces of the 65 mm and 50 mm hoses are 720 N and 1100 N, respectively. The inclined surface 23b formed by the locking lock groove 23c and the inclined surface formed by the projection 17b processed on the receiving metal pawl 17 are engaged with each other, so that the coupling state of the metal fittings can be obtained by using the tensile force when the hose is pressed. Can be locked.
図８に結合金具の係止のロックと解除に関わる力関係の模式図を示す。Ｆ１はホースの加圧による発生した引張力である。Ｆ２はＦ１の分力で発生した力で、この力は爪を中心軸Ｘ２の方向に動く、つまり係止を解除しないように働く。Ｆ４は押し輪２２から受けた力である。また、Ｆ３はＦ４の分力で、係止を解除するように働く。Ｆ３とＦ２とが等しい時に釣り合いが保たれる。αを差し金具２０の中心軸線Ｘ２に対する係止ロック用溝２３ｃの斜面２３ｂの角度とすると、斜面２３ｂの角度αは、０°〜９０°の任意角度に加工することができる。また、差し金具本体２１の中心軸線Ｘ２に対する係止解除用斜面１７ａの角度をβとすると、係止解除用斜面１７ａの角度βは一定である。ここで、係止を解除する時の爪の動きを考えると、爪がF2の力でL2の距離を半径方向に移動し、それに伴い、F1の力を克服し、環状突部２３が軸方向にL1の距離を移動する。その際、仕事量として、F1×L1＝F2×L2となる。また、L１/L2＝ｔａｎ（９０−α）であるため、各力と角度との関係は以下の通りである。
Ｆ２／Ｆ１＝ｔａｎ（９０−α）・・・（１）
Ｆ４／Ｆ３＝ｔａｎβ・・・（２）
同様に、Ｆ３＝Ｆ２’ｔａｎβ＝ａ（ｃｏｎｓｔａｎt）、よって
Ｆ４＝ａＦ１ｔａｎ（９０−α）・・・（３）
FIG. 8 is a schematic diagram showing a force relationship related to locking and releasing of the locking of the fitting. F 1 is a tensile force generated by pressurizing the hose. F 2 is a force generated by the component force of F 1 , and this force moves the claw in the direction of the central axis X 2, that is, does not release the lock. F 4 is the force received from the push wheel 22. F 3 is a component force of F 4 and works to release the lock. And F 3 and F 2 are balanced is maintained at equal. If α is the angle of the inclined surface 23b of the locking lock groove 23c with respect to the center axis X2 of the metal fitting 20, the angle α of the inclined surface 23b can be processed to an arbitrary angle of 0 ° to 90 °. Further, if the angle of the locking release inclined surface 17a with respect to the central axis X2 of the metal fitting body 21 is β, the angle β of the locking releasing inclined surface 17a is constant. Here, considering the movement of the claw when releasing the lock, the claw moves the distance of L2 in the radial direction by the force of F2, and accordingly, the force of F1 is overcome and the annular protrusion 23 is axially moved. Move L1 distance to. At that time, the work amount is F1 × L1 = F2 × L2. Further, since L1 / L2 = tan (90−α), the relationship between each force and the angle is as follows.
F 2 / F 1 = tan (90−α) (1)
F 4 / F 3 = tan β (2)
Similarly, F 3 = F 2 ′ tan β = a (constant), and therefore F 4 = aF 1 tan (90−α) (3)
式（３）のように、斜面２３ｂの角度αを変えることによって、一定圧力Ｆ１における解除力の大きさが変わる。従来の結合金具はロック用の溝がないため、αが９０°である。よって、ｔａｎ（９０−α）＝０、Ｆ４＝０である。すなわち、従来の構造では、圧力がかかった状態においても、爪ばね１５の力と係止面の摩擦抵抗力を克服するための力があれば結合を解除できる。
一方、αが０°になると、ｔａｎ（９０−α）が無限大になり、ホースの内圧に関係なく、係止の解除に必要な力Ｆ４は無限大になる。このように、斜面２３ｂの角度αを適切に設定すれば、それに対応する解除力が決まる。最小放射圧における結合金具の解除力（爪ばね力と摩擦力を含む）が人の指の力より大きく設定すれば、誤操作があっても、結合金具が不用意に解除されてしまうことが避けられる。また、ホースが加圧された状態で移動する際、たとえ障害物に引っ掛かっても、金具の結合が簡単に離脱することがない。
As in Equation (3), by changing the angle α of the slope 23b, it changes the size of the release force at constant pressure F 1. Since the conventional fitting has no locking groove, α is 90 °. Therefore, tan (90−α) = 0 and F 4 = 0. That is, in the conventional structure, even when pressure is applied, the coupling can be released if there is a force for overcoming the force of the claw spring 15 and the frictional resistance of the locking surface.
On the other hand, when α becomes 0 °, tan (90−α) becomes infinite, and the force F 4 necessary for releasing the lock becomes infinite regardless of the internal pressure of the hose. Thus, if the angle α of the inclined surface 23b is set appropriately, the corresponding release force is determined. If the release force (including claw spring force and friction force) of the coupling bracket at the minimum radiation pressure is set to be greater than the force of the human finger, the coupling bracket can be prevented from being inadvertently released even if there is an error. It is done. Further, when the hose moves in a pressurized state, the metal fitting is not easily detached even if it is caught by an obstacle.
また、前記の対策だけでは、ホースが加圧されていない状態において、ホースの圧力を利用して結合金具をロックすることができないため、移動中に障害物による結合金具の離脱を防ぐことができない。そのため、押し輪２２の係止解除用円筒部２２ａの内周面の両端には、微細な溝による押し輪側滑り止め溝２２ｃを加工し、差し金具本体２１の摺動円筒部２５の外周面には、微細の溝による本体側滑り止め溝２５ａを形成している。
人が結合金具を解除する場合、両手の指で押し輪２２の鍔状操作部２２ｂを均等に押すことに対して、押し輪２２の鍔状操作部２２ｂが障害物に引っ掛かった場合では、鍔状操作部２２ｂの一方側が力を受ける状態となる。押し輪２２の係止解除用円筒部２２ａの内周と差し金具本体２１の外周との間にわずかな隙間があるため、一方の受力状態になると、図５のように、係止解除用円筒部２２ａの先端の一方が浮き上がり、他方が差し金具本体２１の外周にくい込むようになる。また、係止解除用円筒部２２ａの後部も同様な現象が起きる。そこで本体側滑り止め溝２５ａを形成することで、係止解除用円筒部２２ａの端面が係止できるが、係止解除用円筒部２２ａの内周面の両端に押し輪側滑り止め溝２２ｃを形成することで、互いの係止がより確実に行え、一方に加えられた障害物の力は滑り止めの効果をもたらすようになる。よって、障害物による結合金具の不用意の離脱を防ぐことができる。
In addition, with the above measures alone, it is impossible to lock the coupling fitting using the pressure of the hose when the hose is not pressurized. . Therefore, at both ends of the inner peripheral surface of the unlocking cylindrical portion 22a of the push ring 22, a press ring side non-slip groove 22c is formed by a fine groove, and the outer peripheral surface of the sliding cylindrical portion 25 of the metal fitting body 21 is processed. The main body side non-slip groove 25a is formed by a fine groove.
When a person releases the coupling metal, the hook-like operation part 22b of the push ring 22 is pushed evenly with fingers of both hands, whereas the hook-like operation part 22b of the push ring 22 is caught by an obstacle, The one side of the shaped operation portion 22b is in a state of receiving a force. Since there is a slight gap between the inner periphery of the unlocking cylindrical portion 22a of the push ring 22 and the outer periphery of the metal fitting main body 21, when one force is received, as shown in FIG. One end of the cylindrical portion 22a is lifted, and the other end is not easily inserted into the outer periphery of the fitting body 21. The same phenomenon occurs in the rear portion of the locking release cylindrical portion 22a. Therefore, by forming the main body side non-slip groove 25a, the end surface of the unlocking cylindrical portion 22a can be locked, but the push-wheel side non-slip grooves 22c are formed at both ends of the inner peripheral surface of the unlocking cylindrical portion 22a. By forming, the mutual locking can be performed more reliably, and the force of the obstacle applied to one side brings about the effect of anti-slip. Therefore, careless detachment of the coupling fitting due to an obstacle can be prevented.
図９に、従来の結合金具と本実施例の結合金具に対する解除力の実測値を示す。
本発明の有用性を実証するため、４５°の係止ロック用溝２３ｃの斜面２３ｂの角度αを有する結合金具を試作し、ホース圧を変化させて解除力を測定した。また、比較のため従来の結合金具の解除力も測定した。ここで解除力とは、差し金具２０と受け金具１０が結合した状態において、結合金具の係止を解除するために、押し輪２２の鍔状操作部２２ｂに加えた力の最大値を指す。ここに示された必要な解除力の測定値は爪ばね１５の力と摩擦力および斜面のかみ合いによるロック力の合計値である。
図９に示すように、ホースに圧力がかかっていない状態において、従来品と本実施例の解除力が同等である。一方、ホースの加圧状態において、その圧力の増大につれ、金具の結合解除に必要な力が増える。通常の最低使用圧力の０．３ＭＰａにおいて、本実施例の解除力は従来品の約６倍である。
FIG. 9 shows actual measured values of the release force for the conventional fitting and the fitting of this embodiment.
In order to demonstrate the usefulness of the present invention, a coupling fitting having an angle α of the inclined surface 23b of the 45 ° locking lock groove 23c was prototyped, and the release force was measured by changing the hose pressure. For comparison, the releasing force of the conventional fitting was also measured. Here, the release force refers to the maximum value of the force applied to the hook-shaped operation portion 22b of the push ring 22 in order to release the engagement of the coupling fitting in a state where the insertion fitting 20 and the receiving fitting 10 are coupled. The measured value of the necessary release force shown here is the total value of the force and frictional force of the claw spring 15 and the locking force due to the meshing of the slope.
As shown in FIG. 9, the release force of the conventional product and that of the present embodiment are equivalent in a state where no pressure is applied to the hose. On the other hand, in the pressurized state of the hose, as the pressure increases, the force necessary for releasing the coupling of the metal fittings increases. At a normal minimum working pressure of 0.3 MPa, the release force of this example is about 6 times that of the conventional product.
図１０に、人による結合金具の係止を解除する際の最大指力の測定値を示す。
差し金具２０と受け金具１０の構造が異なるため、それを解除する時の操作者と結合金具の相対位置、つまり、差し金具２０側に立つか、または受け金具１０側に立つかによって、指の持ちやすさが変わり、それに伴って力の出し方も変わる。測定は同じ被験者に対して、二つの位置において測定を行った。また、測定対象として、一般人と消防士を分けて、それぞれのグループに対する測定を行った。その結果によると、結合金具を解除するための一般人の指力の最小値、最大値および平均値は、それぞれ１４０Ｎと５５０Ｎおよび３０８Ｎである。また、消防隊員の指力の最小値、最大値および平均値は、それぞれ１４９Ｎと６８０Ｎおよび３９８Ｎである。
その結果より、従来の結合金具を使用する場合、人によっては０．７ＭＰａのホース圧力においても結合金具の結合を解除することが可能である。それに対し、本発明の結合金具を使用する場合、人の指力で結合金具を解除できる限界圧力は約０．１１ＭＰａである。消火活動時の通常の最低使用圧力は０．３ＭＰａであるため、本実施例を利用すれば誤操作により結合金具の離脱を防止することができる。
In FIG. 10, the measured value of the maximum finger force at the time of releasing the locking of the coupling metal by a person is shown.
Since the structures of the insertion fitting 20 and the receiving fitting 10 are different, depending on the relative position between the operator and the fitting when releasing it, that is, depending on whether it stands on the insertion fitting 20 side or the receiving fitting 10 side, The ease of holding will change, and the way the force will be applied will change accordingly. The measurement was performed at two positions on the same subject. Moreover, as a measurement object, a general person and a firefighter were divided, and the measurement for each group was performed. According to the result, the minimum value, the maximum value, and the average value of the finger force of the general person for releasing the coupling fitting are 140N, 550N, and 308N, respectively. Moreover, the minimum value, the maximum value, and the average value of the finger force of firefighters are 149N, 680N, and 398N, respectively.
As a result, when a conventional fitting is used, it is possible for some people to release the fitting of the fitting even at a hose pressure of 0.7 MPa. On the other hand, when using the coupling fitting of the present invention, the limit pressure at which the coupling fitting can be released by a human finger is about 0.11 MPa. Since the normal minimum operating pressure during fire extinguishing activity is 0.3 MPa, the use of this embodiment can prevent the coupling fitting from being detached by an erroneous operation.
図１１は従来品と本実施例の結合金具の押し輪が段差の引っ掛かりにより、金具の結合が解除されるかどうかを調べた結果である。また、ホースの加圧されない状態において、押し輪２２が段差に引っ掛かった時の状態も調べた。実験は新品の結合金具を使用してそれぞれ１０回を実施した。同様な引っ張る力において、従来品が１００％の確率で結合が解除されたことに対して、本実施例の解除確率は０％であった。本実施例では段差などの障害物に引っ掛かった際、不用意の離脱を防げることがわかる。
従って、本発明の有用性が実証される。
FIG. 11 shows the result of investigating whether or not the coupling of the metal fitting is released due to the stepped hooks of the conventional product and the coupling metal fitting of this embodiment. Moreover, the state when the push ring 22 was caught in the step in the state where the hose was not pressurized was also examined. The experiment was carried out 10 times using a new coupling fitting. With the same pulling force, the bond of the conventional product was released with a probability of 100%, whereas the release probability of this example was 0%. In this embodiment, it can be seen that inadvertent detachment can be prevented when caught on an obstacle such as a step.
Therefore, the usefulness of the present invention is demonstrated.
１０ 受け金具
１１ 受け金具本体
１２ 受け金具用ホース接続部
１５ 爪ばね
１７ 受け金具爪
１７ａ 係止解除用斜面
１７ｂ 突起
２０ 差し金具
２１ 差し金具本体
２２ 押し輪
２３ 環状突部
２３ａ 差し金具用ホース接続部側端面
２３ｂ 斜面
２３ｃ 係止ロック用溝
２４ 差し金具用ホース接続部
２５ 摺動円筒部
２５ａ 本体側滑り止め溝
２５ｂ キー溝
DESCRIPTION OF SYMBOLS 10 Receptacle 11 Receptacle body 12 Receptacle hose connection part 15 Claw spring 17 Receptacle claw 17a Unlocking slope 17b Protrusion 20 Insertion fitting 21 Insertion fitting body 22 Push ring 23 Annular protrusion 23a Insertion hose connection part Side end face 23b Slope 23c Locking lock groove 24 Hose connection part for metal fitting 25 Sliding cylindrical part 25a Body side non-slip groove 25b Key groove
Claims (6)
前記差し金具が、
一方に環状突部を、他方に差し金具用ホース接続部を、前記環状突部と前記差し金具用ホース接続部との間に摺動円筒部を、それぞれ設けた差し金具本体と、
前記摺動円筒部でスライド可能な押し輪と
を有し、
前記受け金具が、
一方に受け金具爪を、他方に受け金具用ホース接続部を、それぞれ設けた受け金具本体と、
前記受け金具爪を前記受け金具本体の中心軸線の方向に付勢する爪ばねと
を有し、
前記環状突部を、前記受け金具爪を越える位置まで、前記受け金具本体の一方から挿入することで前記差し金具と前記受け金具を結合し、
前記押し輪を、前記摺動円筒部に沿ってスライドさせて前記受け金具に挿入し、前記受け金具爪の係止解除用斜面に当接させ、前記押し輪によって前記係止解除用斜面を押圧することで前記受け金具爪を外方に押しよけて、前記受け金具爪と前記環状突部との係止を解除することで、前記差し金具と前記受け金具との結合を解除するように構成された消防ホースの結合金具において、
前記環状突部の前記差し金具用ホース接続部側端面には、斜面を形成する係止ロック用溝を設け、
前記受け金具爪には、前記斜面と当接する突起を設け、
前記差し金具の中心軸線に対する前記係止ロック用溝の前記斜面の角度をαとした時に、０°＜α＜９０°とし、
前記差し金具本体の中心軸線に対する前記係止解除用斜面の角度をβとした時に、β＜αとしたことを特徴とする消防ホースの結合金具。 It consists of a bracket and a receiving bracket.
The insertion bracket is
A metal fitting body provided with an annular protrusion on one side, a hose connection part for a metal fitting on the other side, and a sliding cylindrical part provided between the annular protrusion and the hose connection part for metal fittings, respectively.
A push ring slidable on the sliding cylindrical portion,
The receiving bracket is
A receiving metal body provided with a receiving metal pawl on one side and a hose connecting part for receiving metal on the other,
A claw spring for urging the catch metal pawl in the direction of the central axis of the catch metal body,
The insertion fitting and the receiving fitting are coupled by inserting the annular protrusion from one side of the receiving fitting main body up to a position beyond the receiving fitting claw,
The push ring is slid along the sliding cylindrical portion and inserted into the receiving metal fitting, brought into contact with the locking release slope of the receiving metal pawl, and the locking release slope is pressed by the push ring. By doing so, it is possible to release the coupling between the metal fitting and the metal fitting by releasing the metal fitting claw outward and releasing the engagement between the metal fitting claw and the annular protrusion. In the firefighting hose coupling fittings configured,
On the end surface of the annular protrusion on the side of the hose connecting portion for the metal fitting, a locking lock groove that forms a slope is provided,
Providing a projection that abuts the slope on the catch claws ,
When the angle of the inclined surface of the locking lock groove with respect to the center axis of the metal fitting is α, 0 ° <α <90 °,
A fire hose coupling fitting , wherein β <α, where β is an angle of the locking release slope with respect to the central axis of the insert body .
前記差し金具が、The insertion bracket is
一方に環状突部を、他方に差し金具用ホース接続部を、前記環状突部と前記差し金具用ホース接続部との間に摺動円筒部を、それぞれ設けた差し金具本体と、A metal fitting body provided with an annular protrusion on one side, a hose connection part for a metal fitting on the other side, and a sliding cylindrical part provided between the annular protrusion and the hose connection part for metal fittings, respectively.
前記摺動円筒部でスライド可能な押し輪とA push ring slidable on the sliding cylindrical portion;
を有し、Have
前記受け金具が、The receiving bracket is
一方に受け金具爪を、他方に受け金具用ホース接続部を、それぞれ設けた受け金具本体と、A receiving metal body provided with a receiving metal pawl on one side and a hose connecting part for receiving metal on the other,
前記受け金具爪を前記受け金具本体の中心軸線の方向に付勢する爪ばねとA claw spring for urging the catch metal pawl in the direction of the central axis of the catch metal body;
を有し、Have
前記環状突部を、前記受け金具爪を越える位置まで、前記受け金具本体の一方から挿入することで前記差し金具と前記受け金具を結合し、The insertion fitting and the receiving fitting are coupled by inserting the annular protrusion from one side of the receiving fitting main body up to a position beyond the receiving fitting claw,
前記押し輪を、前記摺動円筒部に沿ってスライドさせて前記受け金具に挿入し、前記受け金具爪の係止解除用斜面に当接させ、前記押し輪によって前記係止解除用斜面を押圧することで前記受け金具爪を外方に押しよけて、前記受け金具爪と前記環状突部との係止を解除することで、前記差し金具と前記受け金具との結合を解除するように構成された消防ホースの結合金具において、The push ring is slid along the sliding cylindrical portion and inserted into the receiving metal fitting, brought into contact with the locking release slope of the receiving metal pawl, and the locking release slope is pressed by the push ring. By doing so, it is possible to release the coupling between the metal fitting and the metal fitting by releasing the metal fitting claw outward and releasing the engagement between the metal fitting claw and the annular protrusion. In the firefighting hose coupling fittings configured,
前記環状突部の前記差し金具用ホース接続部側端面には、斜面を形成する係止ロック用溝を設け、On the end surface of the annular protrusion on the side of the hose connecting portion for the metal fitting, a locking lock groove that forms a slope is provided,
前記受け金具爪には、前記斜面と当接する突起を設け、Providing a projection that abuts the slope on the catch claws,
前記摺動円筒部の外周面に本体側滑り止め溝を設け、A body side non-slip groove is provided on the outer peripheral surface of the sliding cylindrical portion,
前記本体側滑り止め溝を横断するキー溝を形成し、前記キー溝の両端が前記本体側滑り止め溝の幅を超えるように付設したことを特徴とする消防ホースの結合金具。A fire hose coupling fitting, wherein a key groove crossing the main body side anti-slip groove is formed, and both ends of the key groove are attached so as to exceed the width of the main body side anti-slip groove.
The fire hose coupling fitting according to claim 4 , wherein the main body side anti-slip groove or the push wheel side anti-slip groove has a triangular, trapezoidal, or wavy cross-sectional shape.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011187580A JP5864164B2 (en) | 2011-08-30 | 2011-08-30 | Fire hose coupling fittings |
| KR1020120023499A KR101678713B1 (en) | 2011-08-30 | 2012-03-07 | Fire hose couplings |
| TW101108651A TWI554308B (en) | 2011-08-30 | 2012-03-14 | Combinations of fire hoses |
| CN201210085819.3A CN102966817B (en) | 2011-08-30 | 2012-03-23 | The combination accessory of fire hose |
| CN201610730569.2A CN106195489B (en) | 2011-08-30 | 2012-03-23 | The combination accessory of fire hose |
| HK13109801.5A HK1182435A1 (en) | 2011-08-30 | 2013-08-21 | Fire hose coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011187580A JP5864164B2 (en) | 2011-08-30 | 2011-08-30 | Fire hose coupling fittings |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015149324A Division JP5977403B2 (en) | 2015-07-29 | 2015-07-29 | Fire hose coupling fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2013050143A JP2013050143A (en) | 2013-03-14 |
| JP5864164B2 true JP5864164B2 (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011187580A Active JP5864164B2 (en) | 2011-08-30 | 2011-08-30 | Fire hose coupling fittings |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5864164B2 (en) |
| KR (1) | KR101678713B1 (en) |
| CN (2) | CN106195489B (en) |
| HK (1) | HK1182435A1 (en) |
| TW (1) | TWI554308B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016014477A (en) * | 2015-07-29 | 2016-01-28 | 株式会社モリタホールディングス | Fitting for fire hose |
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| JP6384917B2 (en) * | 2014-10-08 | 2018-09-05 | 学校法人立命館 | Fire extinguishing nozzle |
| JP2016083191A (en) * | 2014-10-27 | 2016-05-19 | 学校法人立命館 | Community fire hydrant added with auxiliary fire extinction function |
| CN105156800A (en) * | 2015-08-06 | 2015-12-16 | 刘磊 | Fast inserting type disengaging-preventing and binding-free hose coupling |
| CN106764180B (en) * | 2016-12-31 | 2019-05-24 | 缪灵军 | A kind of quick joint for metal pipes |
| CN106939951A (en) * | 2017-04-11 | 2017-07-11 | 公安部四川消防研究所 | A kind of connector fixing device and fastening method |
| CN107387903A (en) * | 2017-08-22 | 2017-11-24 | 周荣建 | A kind of fire extinguisher canvas hose joint |
| CN108273219A (en) * | 2017-12-13 | 2018-07-13 | 泉州旭瑞商务有限公司 | A kind of elastic fire hose |
| JP2020143724A (en) * | 2019-03-06 | 2020-09-10 | 株式会社山田製作所 | Metal insert fitting of insertion type connection joint, and insertion type connection joint |
| CN113661717A (en) * | 2019-04-04 | 2021-11-16 | 五十平方株式会社 | Earphone sleeve and fixing piece thereof |
| JP7376099B2 (en) * | 2020-06-04 | 2023-11-08 | 株式会社山田製作所 | Plug-in joint fittings and plug-in joints |
| CN111494857B (en) * | 2020-06-04 | 2021-05-04 | 王素贞 | Fire-fighting equipment collecting box |
| CN116734066B (en) * | 2023-08-15 | 2023-12-19 | 南通海王消防水带有限公司 | Fire control connects |
| CN117146084B (en) * | 2023-10-30 | 2024-02-20 | 泉州市山河消防技术有限公司 | Reducing type water hose connector |
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- 2012-03-07 KR KR1020120023499A patent/KR101678713B1/en active IP Right Grant
- 2012-03-14 TW TW101108651A patent/TWI554308B/en active
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- 2012-03-23 CN CN201210085819.3A patent/CN102966817B/en active Active
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| JP2016014477A (en) * | 2015-07-29 | 2016-01-28 | 株式会社モリタホールディングス | Fitting for fire hose |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106195489A (en) | 2016-12-07 |
| CN106195489B (en) | 2019-03-26 |
| TW201309361A (en) | 2013-03-01 |
| CN102966817B (en) | 2016-09-28 |
| HK1182435A1 (en) | 2013-11-29 |
| CN102966817A (en) | 2013-03-13 |
| TWI554308B (en) | 2016-10-21 |
| KR20130024714A (en) | 2013-03-08 |
| KR101678713B1 (en) | 2016-11-22 |
| JP2013050143A (en) | 2013-03-14 |
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