JP6466149B2 - Plug cover - Google Patents

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JP6466149B2
JP6466149B2 JP2014234615A JP2014234615A JP6466149B2 JP 6466149 B2 JP6466149 B2 JP 6466149B2 JP 2014234615 A JP2014234615 A JP 2014234615A JP 2014234615 A JP2014234615 A JP 2014234615A JP 6466149 B2 JP6466149 B2 JP 6466149B2
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plug
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cylindrical member
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翔平 加藤
翔平 加藤
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株式会社パロマ
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Description

本発明は、ガスストーブ、ガスファンヒータ、ガス炊飯器等のガス燃焼機器に設けられたプラグに取り付けられるプラグカバーに関するものである。   The present invention relates to a plug cover attached to a plug provided in a gas combustion device such as a gas stove, a gas fan heater, or a gas rice cooker.

従来、ガス燃焼機器には、ガスコンセントから接続されるガスコードを装着するためのプラグ(ガスプラグ)が設けられており、このプラグに対し、ガスコードの先端部に設けられた専用の継手を装着することが可能となっている。この種の構成では、プラグ側にはガス燃焼機器内部に続くガス流路が形成され、継手側にはガスコードから続くガス流路が形成されており、プラグに対して継手を接続することで、プラグ側のガス流路と継手側のガス流路とが連通し、ガスコード側からガス燃焼機器内部にガスが供給されるようになっている(特許文献1参照)。   Conventionally, gas combustion equipment has been provided with a plug (gas plug) for mounting a gas cord connected from a gas outlet, and a dedicated joint provided at the tip of the gas cord is connected to this plug. It can be installed. In this type of configuration, a gas flow path that continues inside the gas combustion device is formed on the plug side, and a gas flow path that continues from the gas cord is formed on the joint side. The gas channel on the plug side and the gas channel on the joint side communicate with each other, and gas is supplied from the gas cord side to the inside of the gas combustion device (see Patent Document 1).

また、このような構成のものでは、ガスコードの先端部に設けられた継手において、プラグ形状に対応した導入部が設けられており、この導入部の所要箇所には、プラグと導入部とをシールするシール部が設けられている。また、導入部の外周部には、プラグが導入部に挿入された際に、ばねによってプラグ方向にスライドし、プラグと継手とを係合した状態に維持するスライド筒部が設けられており、継手内部には、そのスライド筒部のプラグ方向へのスライドに連動して継手内のガス流路を開放する開閉弁が設けられている。このように構成される継手がガスプラグに装着されたときには、ガスプラグと継手とがシールされた状態で接合されることになり、ガスの漏出が防止される。なお、ガスプラグと継手との係合状態は、スライド筒部を継手本体側にスライドさせることで解除されるが、開閉弁はスライド筒部のスライドに連動して継手内のガス流路を閉鎖するように構成されている。このように構成されているため、ガスコードをプラグから取り外したときでもガスコード先端からガスが漏出しないようになっている。   Further, in such a configuration, an introduction portion corresponding to the plug shape is provided in the joint provided at the distal end portion of the gas cord, and a plug and an introduction portion are provided at a required portion of the introduction portion. A seal portion for sealing is provided. Further, the outer peripheral portion of the introduction portion is provided with a slide cylinder portion that slides in the plug direction by a spring when the plug is inserted into the introduction portion, and maintains the state in which the plug and the joint are engaged. An open / close valve is provided inside the joint to open the gas flow path in the joint in conjunction with the slide of the slide cylinder portion in the plug direction. When the joint configured as described above is attached to the gas plug, the gas plug and the joint are joined in a sealed state, and gas leakage is prevented. The engagement state between the gas plug and the joint is released by sliding the slide cylinder toward the joint body, but the on-off valve closes the gas flow path in the joint in conjunction with the slide of the slide cylinder. Is configured to do. Due to such a configuration, even when the gas cord is removed from the plug, gas does not leak from the tip of the gas cord.

特開2014−118991号公報JP 2014-118991 A

ところで、ガス燃焼機器のプラグは、先端部が所定の内径寸法となっていれば嵌り合うため、例えば、接続を想定していないガスホース(継手の無い単なるガスホース)によって無理矢理に接続が試みられてしまう虞がある。このように継手の無いガスホースをプラグに外挿した場合、ガスホースからガス燃焼機器内にガスを供給することは可能であるが、ガスホースとプラグを良好にシールすることができないため、ガス漏れが生じる虞がある。従って、このような問題を避けるべく、継手の無いガスホースを直接的に接続できなくするような何らかの対策が求められる。   By the way, since the plug of the gas combustion device fits if the tip portion has a predetermined inner diameter, for example, connection is forcibly attempted by a gas hose that is not supposed to be connected (a simple gas hose without a joint). There is a fear. When a gas hose without a joint is extrapolated to the plug in this way, it is possible to supply gas from the gas hose into the gas combustion device, but the gas hose and the plug cannot be sealed well, resulting in gas leakage. There is a fear. Therefore, in order to avoid such a problem, some measures are required to make it impossible to directly connect a gas hose without a joint.

この対策の一例としては、例えば、特許文献1のようなプラグカバーが提案されている。特許文献1のプラグカバーは、プラグに装着される装着部が基端部に形成され、継手の挿入口となる開口部がその反対側の先端部に形成されており、挿入口から継手を差し込むことでプラグカバーをプラグから取り外すことができるようになっている。   As an example of this countermeasure, for example, a plug cover as in Patent Document 1 has been proposed. In the plug cover of Patent Document 1, a mounting portion to be attached to a plug is formed at a base end portion, and an opening portion serving as a joint insertion port is formed at a distal end portion on the opposite side, and the joint is inserted from the insertion port. Thus, the plug cover can be removed from the plug.

具体的には、半円筒状に構成された2つの半円筒部材(連結部材60a,60b)がヒンジ部60cによって互いに連結されており、このヒンジ部60cを中心として各半円筒部材(連結部材60a,60b)が開閉し得る構造となっている。また、プラグカバー内には、プラグカバーの軸方向先端部側の内部空間と、基端部側の内部空間とを区画する区画壁(隔離壁85)が形成されており、基端部側の内部空間には、プラグに外側から当接されてプラグを定位置に位置決めする環状部材(円弧状嵌合部71)が設けられている。そして、軸方向先端側には、ガスコード先端の継手(継手部材20)を挿入するための挿入口が形成されている。   Specifically, two semi-cylindrical members (connecting members 60a and 60b) configured in a semi-cylindrical shape are connected to each other by a hinge portion 60c, and each semi-cylindrical member (the connecting member 60a) is centered on the hinge portion 60c. 60b) can be opened and closed. A partition wall (isolation wall 85) is formed in the plug cover to divide the internal space on the axial front end side of the plug cover and the internal space on the base end side. In the internal space, an annular member (arc-shaped fitting portion 71) is provided that contacts the plug from the outside and positions the plug at a fixed position. An insertion port for inserting the joint (joint member 20) at the distal end of the gas cord is formed on the distal end side in the axial direction.

また、特許文献1の構成では、半円筒部材(連結部材60a)においてヒンジ部60cとは逆側の端部には、区画壁(隔離壁85)よりも軸方向先端側に寄った位置に係合孔62aを備えた連結片が形成されており、他方の半円筒部材(連結部材60b)においてヒンジ部60cとは逆側の端部には、連結片の係合孔62aと係合する係合爪61aが形成されている。この構成では、半円筒部材(連結部材60a,60b)がヒンジ部60cを中心に揺動するようになっており、半円筒部材(連結部材60a,60b)におけるヒンジ部60cとは逆側の端部同士が当接することでプラグカバー全体が筒状の状態となる。   In the configuration of Patent Document 1, the end of the semi-cylindrical member (connecting member 60a) on the side opposite to the hinge 60c is at a position closer to the front end side in the axial direction than the partition wall (isolation wall 85). A connecting piece having a joint hole 62a is formed, and the other semi-cylindrical member (connecting member 60b) is engaged with the engaging hole 62a of the connecting piece at the end opposite to the hinge portion 60c. A claw 61a is formed. In this configuration, the semi-cylindrical members (the connecting members 60a and 60b) swing around the hinge portion 60c, and the end of the semi-cylindrical members (the connecting members 60a and 60b) opposite to the hinge portion 60c. When the parts abut, the entire plug cover is in a cylindrical state.

そして、この状態において係合爪61aと係合孔62aとを係合させることで、プラグカバーを円筒状の状態に維持できるようになっている。 In this state, the engagement of the engagement claw 61a and the engagement hole 62a allows the plug cover to be maintained in a cylindrical state.

このプラグカバーの内周面には、解除のための構成として傾斜面(係合解除部86)が形成されている。この傾斜面(係合解除部86)は、プラグカバーの内周面において区画壁(隔離壁85)よりも軸方向先端側に寄った位置及び上記連結片の内面において、先端側から基端側になるにつれて内側に張り出すように形成されている。この傾斜面(係合解除部86)は、挿入口に継手部材20が挿入された場合には当該継手部材20の外周部が当接するように、且つ継手部材20よりも径が細いガスホースが押し込まれた場合には当該ガスホースが傾斜面(係合解除部86)に当接できないように傾斜面の傾斜角等が設定されている。   An inclined surface (engagement release portion 86) is formed on the inner peripheral surface of the plug cover as a configuration for releasing. The inclined surface (disengagement part 86) is located on the inner peripheral surface of the plug cover closer to the distal end side in the axial direction than the partition wall (separating wall 85) and on the inner surface of the connecting piece from the distal end side to the proximal end side. As it becomes, it is formed to project inward. When the joint member 20 is inserted into the insertion port, the inclined surface (disengagement portion 86) is pushed in by a gas hose having a diameter smaller than that of the joint member 20 so that the outer peripheral portion of the joint member 20 contacts. In such a case, the inclination angle of the inclined surface is set so that the gas hose cannot contact the inclined surface (disengagement part 86).

このように構成されるプラグカバーは、挿入口から継手部材20が挿入された場合には、当該継手部材20が傾斜面(係合解除部86)に当接して連結片を外側に押し広げるように作用するため、この作用によって連結状態が解除され、プラグカバーをプラグから取り外することができる。一方、継手のないガスホースの端部が挿入された場合には、ガスホースが傾斜面(係合解除部86)を強く押すように作用しないため、連結状態が解除されず、プラグカバーを取付状態で維持することができる。つまり、この構成によれば、「継手の無いガスホースを直接的に接続できなくする」という目的は一応は果たされる。   In the plug cover configured as described above, when the joint member 20 is inserted from the insertion port, the joint member 20 abuts on the inclined surface (the disengagement part 86) and pushes the connecting piece outward. Therefore, the connected state is released by this action, and the plug cover can be removed from the plug. On the other hand, when the end portion of the gas hose without a joint is inserted, the gas hose does not act so as to strongly press the inclined surface (engagement release portion 86), so that the connected state is not released and the plug cover is attached. Can be maintained. That is, according to this configuration, the purpose of “making it impossible to directly connect a gas hose without a joint” is fulfilled for the time being.

しかしながら、特許文献1の構成では、プラグカバーの全体が一つの部品として連結されているため、製造上のコストが高騰しやすいという問題がある。例えば、プラグカバー全体が金型を用いた射出成型などによって一つの大きな部品として形成される場合、金型の大型化が避けられず、金型に要する費用が高騰してしまうことになる。   However, in the configuration of Patent Document 1, since the entire plug cover is connected as one part, there is a problem that the manufacturing cost is likely to increase. For example, when the entire plug cover is formed as one large part by injection molding using a mold, an increase in the size of the mold is unavoidable, and the cost required for the mold increases.

また、この種の製品では、製造上のバラツキ等の理由により各部分の形状が設計上の形状から若干ずれることがありうるが、連結箇所の形状がばらつくと、連結状態が非常に強いプラグカバーが生産されることが想定される。特許文献1の構成は、連結箇所が周方向の一か所のみであるため、製造上のバラツキ等によってその部分の連結状態が強くなってしまったときに他の部分で対応することができず、継手を非常に強く押し込むなどして強い力でその部分の連結を強制的に解除しなければならない。このように、特許文献1の構成は、状況によっては、解除操作が非常に行いにくくなるという問題がある。   Also, with this type of product, the shape of each part may slightly deviate from the design shape due to manufacturing variations, etc., but if the shape of the connection location varies, the plug cover will be very strong. Is expected to be produced. Since the configuration of Patent Document 1 has only one connection portion in the circumferential direction, when the connection state of the portion becomes strong due to manufacturing variation or the like, it cannot be handled by another portion. The joint must be forcibly released with a strong force, for example, by pushing the joint very hard. As described above, the configuration of Patent Document 1 has a problem that the release operation is very difficult to perform depending on the situation.

本発明は、上述した課題を解決するためになされたものであり、ガス燃焼器具に取り付けられるプラグカバーにおいて、解除不良が生じにくく、解除操作を行いやすい構成を提供することを目的とする。   The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a configuration in which a release failure is less likely to occur in a plug cover attached to a gas combustion appliance and the release operation is easily performed.

本発明は、ガスコード先端部に設けられた継手が着脱可能に装着されるプラグを備えたガス燃焼機器に取り付けられ、前記プラグに装着された装着状態を前記継手によって解除することが可能とされた軸状のプラグカバーであって、
前記プラグに装着される装着部と、円筒状に構成されると共に前記装着部に連結される円筒部と、を備え、前記円筒部の軸方向一端側には前記装着状態のときに前記プラグを覆うように配置される底部が設けられ、前記円筒部の軸方向他端側には前記装着状態のときに前記継手が挿入可能とされた挿入口が形成され、前記装着部及び前記円筒部が軸方向に沿って分断された形で一対の半筒状部材が構成されており、
各々の前記半筒状部材は、前記円筒部を構成する部分の周方向一端側に係合部が形成され、周方向他端部に揺動可能な係合片が形成されており、一方の前記半筒状部材の前記係合片が他方の前記半筒状部材の前記係合部に対し外側から係合し、他方の前記半筒状部材の前記係合片が一方の前記半筒状部材の前記係合部に対し外側から係合することで、各々の前記半筒状部材が互いに連結した連結状態となり、前記装着部及び前記円筒部が構成されるようになっており、いずれの前記係合片も、外側に変位することで前記係合部との係合が解除されるようになっており、
各々の前記半筒状部材に設けられた前記係合片には、前記連結状態のときに前記円筒部の軸方向に沿うように配置され且つ前記円筒部の内側へ向けて突出する連結解除部がそれぞれ形成され、各々の前記連結解除部の突出側の端面は、前記挿入口側から前記底部側に近づくにつれて前記円筒部の中心軸に近づく傾斜面として構成され、
前記連結状態のときに、一対の前記傾斜面における前記挿入口側の端部間隔が前記継手の外形よりも大きく、且つ一対の前記傾斜面における前記底部側の端部間隔が前記継手の外形よりも小さい構成となっており、
前記連結状態のときに前記継手が前記円筒部の前記挿入口側から前記底部側に押し込まれることで当該継手によって一対の前記傾斜面が互いに押し広げられることを特徴とする。
The present invention is attached to a gas combustion device provided with a plug to which a joint provided at a gas cord distal end is detachably attached, and the attached state attached to the plug can be released by the joint. An axial plug cover,
A mounting portion that is mounted on the plug; and a cylindrical portion that is configured in a cylindrical shape and that is coupled to the mounting portion, and the plug is attached to one end in the axial direction of the cylindrical portion in the mounted state. A bottom portion is provided so as to cover, and an insertion port through which the joint can be inserted in the mounted state is formed on the other axial end of the cylindrical portion, and the mounting portion and the cylindrical portion are A pair of semi-cylindrical members are configured in a form divided along the axial direction,
Each of the semi-cylindrical members has an engaging portion formed at one end in the circumferential direction of a portion constituting the cylindrical portion, and an engaging piece that can swing at the other end in the circumferential direction. The engaging piece of the semi-cylindrical member is engaged with the engaging portion of the other semi-cylindrical member from the outside, and the engaging piece of the other semi-cylindrical member is one half-cylindrical shape. By engaging the engagement portion of the member from the outside, the semi-cylindrical members are connected to each other, and the mounting portion and the cylindrical portion are configured. The engagement piece is also disengaged from the engagement portion by being displaced outward,
The engagement piece provided in each of the semi-cylindrical members is disposed so as to be along the axial direction of the cylindrical portion in the connected state and protrudes toward the inside of the cylindrical portion. Is formed, and the end surface on the protruding side of each of the connection release portions is configured as an inclined surface that approaches the central axis of the cylindrical portion as it approaches the bottom side from the insertion port side,
In the connected state, the gap between the end portions on the insertion port side of the pair of inclined surfaces is larger than the outer shape of the joint, and the interval between the bottom sides of the pair of inclined surfaces is larger than the outer shape of the joint. Is also a small configuration,
When the joint is in the connected state, the pair of inclined surfaces are pushed apart by the joint by being pushed into the bottom side from the insertion port side of the cylindrical portion.

請求項1の発明は、プラグカバーを構成する各々の半筒状部材に係合片が設けられている。そして、各係合片はいずれも、係合相手となる係合部に対して外側から係合しており、いずれの係合片も、外側に変位することで係合部との係合が解除されるようになっている。一方、各係合片には連結解除部が形成されており、それぞれの連結解除部は、両半筒状部材が連結した連結状態のときに円筒部の軸方向に沿うように配置され且つ円筒部の内側へ向けて突出するように形成されており、各々の連結解除部の突出側の端面は、挿入口側から底部側に近づくにつれて円筒部の中心軸に近づく傾斜面として、対をなして構成されている。この一対の傾斜面は、連結状態のときに挿入口側の端部間隔が継手の外形よりも大きく、且つ底部側の端部間隔が継手の外形よりも小さくなり、このような状態のときに継手が挿入口側から底部側に押し込まれると、当該継手によって一対の傾斜面が互いに押し広げられる。そして、このような押し広げの作用によって、いずれかの係合片が係合解除可能な位置まで外側に変位すると、その係合片の係合が解除されることになる。
このように、本発明に係るプラグカバーでは、別部材として構成された2つの半筒状部材が周方向の二か所で互いに連結された構成となっており、取り外しの際には、継手の挿入により、連結された二か所のうちの少なくとも一か所の連結を解除してその箇所を分離できれば、プラグカバーを開放することができる。例えば、製造上のバラツキ等の理由により連結箇所の一方が非常に強固に係合し、継手の挿入力では連結が解除されにくい状態であったとしても、この継手によって他方の連結箇所を解除すれば、2つの半筒状部材を容易に開放状態にすることができ、プラグカバーをプラグから取り外すことができるようになる。ゆえに、「ある程度の力で継手を挿入してもプラグカバーを解放できない」といった解除不良が生じにくくなる。しかも、二か所のうちの少なくとも一か所の連結を解除できた時点でプラグカバーを開放することができるため、プラグカバーの取り外しの際には、一方の連結を解除できる程度に継手を挿入すればよく、継手を挿入する力や挿入する深さを低減しやすくなる。
According to the first aspect of the present invention, each half-cylindrical member constituting the plug cover is provided with an engaging piece. Each engaging piece is engaged from the outside with the engaging part as an engaging partner, and any engaging piece is displaced outward to engage the engaging part. It is to be released. On the other hand, each engagement piece is formed with a connection release portion, and each connection release portion is arranged so as to be along the axial direction of the cylindrical portion when both the semi-cylindrical members are connected and is cylindrical. It is formed so as to protrude toward the inside of the part, and the end surface on the protruding side of each connection release part forms a pair as an inclined surface that approaches the central axis of the cylindrical part as it approaches the bottom side from the insertion port side Configured. When the pair of inclined surfaces are in a connected state, the end portion interval on the insertion port side is larger than the outer shape of the joint, and the end portion interval on the bottom side is smaller than the outer shape of the joint. When the joint is pushed from the insertion port side to the bottom side, the pair of inclined surfaces are pushed apart by the joint. Then, when any of the engagement pieces is displaced outwardly to a position where the engagement can be released by such an action of spreading, the engagement of the engagement pieces is released.
Thus, in the plug cover according to the present invention, the two semi-cylindrical members configured as separate members are connected to each other at two locations in the circumferential direction. If it is possible to release at least one of the two connected places and separate the place by insertion, the plug cover can be opened. For example, even if one of the connection points is very firmly engaged due to manufacturing variation or the like, and the connection is difficult to be released by the insertion force of the joint, the other connection point can be released by this joint. For example, the two semi-cylindrical members can be easily opened, and the plug cover can be removed from the plug. Therefore, it is difficult to cause a release failure such as “the plug cover cannot be released even if the joint is inserted with a certain amount of force”. Moreover, since the plug cover can be opened when the connection of at least one of the two locations is released, the joint is inserted to such an extent that one of the connections can be released when the plug cover is removed. It is easy to reduce the force and depth of insertion of the joint.

請求項2の発明では、一方の半筒状部材と他方の半筒状部材とが同一形状となっている。この構成によれば、2つの半筒状部材を同一の加工方法で形成することができ、同一の部品として管理することができるため、製造に伴うコストや管理負担を効果的に低減することができる。
請求項3の発明では、各々の半筒状部材における連結状態のときに互いに接触する側の端面に、突起部と孔部とがそれぞれ形成されている。また、連結状態のときには、一方の半筒状部材の突起部が他方の半筒状部材の孔部に挿入された状態となり、他方の半筒状部材の突起部が一方の半筒状部材の孔部に挿入された状態となる。
請求項4の発明では、各々の半筒状部材に設けられた係合片が、連結状態のときに底部を円筒部の軸方向に跨ぐように形成されている。
In the invention of claim 2, one semi-cylindrical member and the other semi-cylindrical member have the same shape. According to this configuration, the two semi-cylindrical members can be formed by the same processing method and can be managed as the same component, so that the cost and management burden associated with manufacturing can be effectively reduced. it can.
In the invention of claim 3, the protrusion and the hole are respectively formed on the end surfaces of the semi-cylindrical members that are in contact with each other in the connected state. Further, when in the connected state, the protrusion of one semi-cylindrical member is inserted into the hole of the other semi-cylindrical member, and the protrusion of the other semi-cylindrical member is It will be in the state inserted in the hole.
In the invention of claim 4, the engaging piece provided on each semi-cylindrical member is formed so as to straddle the bottom portion in the axial direction of the cylindrical portion when in the connected state.

例えば、金型を用いた成型加工によって2つの半筒状部材を製造する場合、同一の金型によって2つの半筒状部材を製造することができる。つまり、この場合、特許文献1のようなプラグカバーを金型によって製造する場合等と比較して金型サイズを小さく抑えやすく、それでいて、金型の種類数を増やさなくても済むため、製造コストをより効果的に低減しやすくなる。   For example, when two semi-cylindrical members are manufactured by molding using a mold, two semi-cylindrical members can be manufactured using the same mold. That is, in this case, the manufacturing cost can be reduced because it is easy to keep the mold size small compared to the case where the plug cover as in Patent Document 1 is manufactured using a mold, and the number of mold types does not need to be increased. Can be reduced more effectively.

なお、上記発明において、2つの連結箇所の各構造を、円筒部の中心(円筒軸)を中心とした対称の構造とし、円筒軸を中心とした対称位置において、「一方の半筒状部材の係合片を他方の半筒状部材の係合部と係合させ、他方の半筒状部材の係合片が一方の半筒状部材の係合部と係合させる構造」とすれば、連結箇所の位置的な偏りが抑えられ、連結状態の安定化を図り易くなる。また、このように連結箇所の位置的な偏りが抑えられた構成では、継手の挿入時に、「継手が一方の連結箇所のみに極端に作用する」といった問題が生じにくく、継手による押圧力が両連結箇所に確実に作用しやすくなる。つまり、継手の挿入時に両連結箇所がいずれも解除されないといった解除不良が生じにくく、いずれか一方の連結箇所が早期に解除されやすいため、迅速な連結解除が可能になる。   In the above invention, each structure of the two connecting portions is a symmetric structure centered on the center of the cylindrical portion (cylindrical axis). If the engaging piece is engaged with the engaging portion of the other semi-cylindrical member, and the engaging piece of the other semi-cylindrical member is engaged with the engaging portion of one semi-cylindrical member, The positional deviation of the connected portions is suppressed, and it becomes easy to stabilize the connected state. In addition, in such a configuration in which the positional deviation of the connection points is suppressed, the problem that “the joints act extremely only on one of the connection points” does not easily occur when the joint is inserted, and the pressing force by the joints is reduced. It becomes easy to act on a connection location reliably. That is, it is difficult to cause a release failure such that neither of the two connection points is released when the joint is inserted, and one of the connection points is easily released at an early stage, so that quick connection release is possible.

図1は、第1実施形態に係るプラグカバーがガス燃焼機器のプラグに装着された装着構造を概略的に示す断面図である。FIG. 1 is a cross-sectional view schematically showing a mounting structure in which a plug cover according to a first embodiment is mounted on a plug of a gas combustion device. 図2(A)は、図1の装着構造の側面図であり、図2(B)は、図2(A)とは反対側の側面図である。2A is a side view of the mounting structure of FIG. 1, and FIG. 2B is a side view of the side opposite to FIG. 2A. 図3(A)は、図1の装着構造の背面図であり、図3(B)は、その正面図である。3A is a rear view of the mounting structure of FIG. 1, and FIG. 3B is a front view thereof. 図4(A)は、図1の装着構造の平面図であり、図4(B)は、その底面図である。4A is a plan view of the mounting structure of FIG. 1, and FIG. 4B is a bottom view thereof. 図5(A)は、第1実施形態に係るプラグカバーを斜め前側から見た斜視図であり、図5(B)は、図5(A)とは異なる方向から見た斜視図である。FIG. 5A is a perspective view of the plug cover according to the first embodiment viewed from an oblique front side, and FIG. 5B is a perspective view of the plug cover viewed from a direction different from that in FIG. 図6(A)は、第1実施形態に係るプラグカバーを斜め後ろ側から見た斜視図であり、図6(B)は、図6(A)とは異なる方向から見た斜視図である。6A is a perspective view of the plug cover according to the first embodiment as viewed from an oblique rear side, and FIG. 6B is a perspective view of the plug cover as viewed from a direction different from FIG. 6A. . 図7(A)は、第1実施形態に係るプラグカバーを下方側から見た斜視図であり、図7(B)は、図7(A)とは異なる方向から見た斜視図である。FIG. 7A is a perspective view of the plug cover according to the first embodiment as viewed from below, and FIG. 7B is a perspective view of the plug cover as viewed from a direction different from FIG. 7A. 図8(A)は、第1実施形態に係るプラグカバーの背面図であり、図8(B)は、その平面図であり、図8(C)は、その正面図である。8A is a rear view of the plug cover according to the first embodiment, FIG. 8B is a plan view thereof, and FIG. 8C is a front view thereof. 図9(A)は、第1実施形態に係るプラグカバーの右側面図であり、図9(B)は、その左側面図であり、図9(C)は、そのプラグカバーを下方側から見た図である。9 (A) is a right side view of the plug cover according to the first embodiment, FIG. 9 (B) is a left side view thereof, and FIG. 9 (C) shows the plug cover from the lower side. FIG. 図10は、図8(C)のC−C断面を概略的に示す断面概略図である。FIG. 10 is a schematic cross-sectional view schematically showing a C-C cross section of FIG. 図11(A)は、図8(B)のA−A断面を概略的に示す断面概略図であり、図11(B)は、図8(B)のB−B断面を概略的に示す断面概略図である。11A is a schematic cross-sectional view schematically showing an AA cross section in FIG. 8B, and FIG. 11B schematically shows a BB cross section in FIG. 8B. FIG. 図12(A)は、図11(A)のD位置を拡大して示す断面拡大図であり、図12(B)は、図11(B)のE位置を拡大して示す断面拡大図である。12A is an enlarged cross-sectional view showing the position D in FIG. 11A in an enlarged manner, and FIG. 12B is an enlarged cross-sectional view showing the position E in FIG. 11B in an enlarged manner. is there. 図13(A)は、第1実施形態に係るプラグカバーの一方の半筒状部材を示す斜視図であり、図13(B)は、図13(A)とは異なる方向から見た斜視図である。FIG. 13A is a perspective view showing one semi-cylindrical member of the plug cover according to the first embodiment, and FIG. 13B is a perspective view seen from a direction different from FIG. 13A. It is. 図14(A)は、図13(A)の半筒状部材を図13とは異なる方向から見た斜視図であり、図14(B)は、図14(A)とは異なる方向から見た斜視図である。14A is a perspective view of the semi-cylindrical member of FIG. 13A viewed from a direction different from FIG. 13, and FIG. 14B is viewed from a direction different from FIG. FIG. 図15(A)は、図13(A)の半筒状部材を図13、図14とは異なる方向から見た斜視図であり、図15(B)は、図15(A)とは異なる方向から見た斜視図である。15A is a perspective view of the semi-cylindrical member of FIG. 13A viewed from a direction different from FIGS. 13 and 14, and FIG. 15B is different from FIG. 15A. It is the perspective view seen from the direction. 図16(A)は、図13等で示す半筒状部材の背面図であり、図16(B)は、その平面図であり、図16(C)は、その正面図である。16 (A) is a rear view of the semi-cylindrical member shown in FIG. 13 and the like, FIG. 16 (B) is a plan view thereof, and FIG. 16 (C) is a front view thereof. 図17(A)は、図13等で示す半筒状部材の右側面図であり、図17(B)は、その左側面図であり、図17(C)は、その半筒状部材を下方側から見た図である。17A is a right side view of the semi-cylindrical member shown in FIG. 13 and the like, FIG. 17B is a left side view thereof, and FIG. 17C is the semi-cylindrical member. It is the figure seen from the lower side.

[第1実施形態]
以下、本発明を具現化した第1実施形態について、図面を参照して説明する。
図1等において符号1は、ガスストーブ、ガスファンヒータ、ガス炊飯器等のガス燃焼機器を示しており、具体的には、ガス燃焼機器の一部(プラグ部分)のみを示している。また、符号3は、このガス燃焼機器に設けられたガスプラグであり、ガスコード先端部5aに設けられた継手7(図10参照)が着脱可能に装着される部分である。なお、以下の説明では、ガスプラグ3を単にプラグ3とも称する。プラグ3は、例えば、L型のパイプ状に構成され、ガス燃焼機器の背面部や底面部などにおいて回転自在に設けられている。図1〜図4で示す連結構造100は、上記プラグ3に後述するプラグカバー10が連結された構造となっており、プラグ3に対する他部材の装着を防止する構造となっている。
[First embodiment]
Hereinafter, a first embodiment embodying the present invention will be described with reference to the drawings.
In FIG. 1 and the like, reference numeral 1 denotes a gas combustion device such as a gas stove, a gas fan heater, or a gas rice cooker, and specifically shows only a part (plug portion) of the gas combustion device. Reference numeral 3 denotes a gas plug provided in the gas combustion device, which is a portion to which a joint 7 (see FIG. 10) provided at the gas cord tip 5a is detachably mounted. In the following description, the gas plug 3 is also simply referred to as a plug 3. The plug 3 is configured, for example, in the shape of an L-shaped pipe, and is provided so as to be freely rotatable on the back surface or bottom surface of the gas combustion device. The connection structure 100 shown in FIGS. 1 to 4 is a structure in which a plug cover 10 to be described later is connected to the plug 3, and has a structure that prevents other members from being attached to the plug 3.

プラグカバー10は、例えば、公知の樹脂材料などによって構成されており、図5〜図7のような外観をなし、全体として筒状に構成されている。このプラグカバー10は、全体として軸状に構成され、図1〜図4のようにプラグ3を備えたガス燃焼機器1に取り付けられるように用いられる。そして、このようにプラグ3に装着された装着状態を、図10のように継手7によって解除することが可能とされている。   The plug cover 10 is made of, for example, a known resin material or the like, has an appearance as shown in FIGS. 5 to 7, and has a tubular shape as a whole. The plug cover 10 is configured in a shaft shape as a whole, and is used so as to be attached to the gas combustion device 1 including the plug 3 as shown in FIGS. The mounting state thus mounted on the plug 3 can be released by the joint 7 as shown in FIG.

図5〜図10で示すように、プラグカバー10は、プラグ3に装着される装着部14と、円筒状に構成されると共に装着部14と一体的に形成される円筒部16と、を備えている。このプラグカバー10は、一対の半筒状部材50,60が筒状に連結された構成のものであり、図8(A)(C)における中央の分断線で示されるように、一対の半筒状部材50,60の各々は、装着部14及び円筒部16が軸方向に沿って分断された形でそれぞれが構成されている。なお、本明細書では、円筒部16の軸方向を前後方向とし、挿入口24側を前側、これとは反対側を後ろ側として定義する。   As shown in FIGS. 5 to 10, the plug cover 10 includes a mounting portion 14 that is mounted on the plug 3, and a cylindrical portion 16 that is formed in a cylindrical shape and is formed integrally with the mounting portion 14. ing. The plug cover 10 has a configuration in which a pair of semi-cylindrical members 50 and 60 are connected in a cylindrical shape, and a pair of half-cylindrical members 50 and 60 are connected to each other as shown by the central dividing line in FIGS. Each of the cylindrical members 50 and 60 is configured such that the mounting portion 14 and the cylindrical portion 16 are divided along the axial direction. In this specification, the axial direction of the cylindrical portion 16 is defined as the front-rear direction, the insertion port 24 side is defined as the front side, and the opposite side is defined as the rear side.

装着部14は、プラグ3に装着され、プラグ3と係合し合う部分である。図1、図6、図8(A)等で示すように、装着部14は、軸方向他方側(後方側)の端部寄りにプラグ3の先端部を挿入するための孔部14aが形成されており、その孔部14aよりも軸方向一方側寄りには、プラグ3の先端部を挟み込むための一対の円弧状部14b、14cが形成されている。なお、一方の円弧状部14bは一方の半筒状部材50の後端寄りに形成された部分であり、他方の円弧状部14cは、他方の半筒状部材60の後端寄りに形成された部分である。下側の半筒状部材60に設けられた孔部14aの下方側部分及び他方の円弧状部14cは、図13(A)(B)のような形状となっており、このような形状の部分が上下にそれぞれ配置されることで、孔部14a及び一対の円弧状部14b、14cが構成されている。そして、図1のように、プラグカバー10がプラグ3に取り付けられる際には、プラグ3の周方向に形成された溝部に嵌り込むように円弧状部14b、14cがそれぞれ配置され、この溝部の部分を円弧状部14b、14cがそれぞれ挟持することで、プラグ3がプラグカバー13から抜けないようになっている。   The mounting portion 14 is a portion that is mounted on the plug 3 and engages with the plug 3. As shown in FIG. 1, FIG. 6, FIG. 8A, etc., the mounting portion 14 is formed with a hole portion 14a for inserting the distal end portion of the plug 3 near the end portion on the other axial side (rear side). A pair of arcuate portions 14b and 14c for sandwiching the distal end portion of the plug 3 are formed closer to one side in the axial direction than the hole portion 14a. One arcuate part 14b is a part formed near the rear end of one semi-cylindrical member 50, and the other arcuate part 14c is formed near the rear end of the other semi-cylindrical member 60. Part. The lower portion of the hole 14a provided in the lower semi-cylindrical member 60 and the other arcuate portion 14c are shaped as shown in FIGS. 13A and 13B. The holes 14a and the pair of arcuate portions 14b and 14c are configured by arranging the portions vertically. As shown in FIG. 1, when the plug cover 10 is attached to the plug 3, the arc-shaped portions 14 b and 14 c are respectively arranged so as to be fitted into the groove formed in the circumferential direction of the plug 3. The plug 3 is prevented from being detached from the plug cover 13 by the portions being held by the arc-shaped portions 14b and 14c.

円筒部16は、図1のようにプラグ3の収容空間よりも前側(底部22を挟んで前側)において円筒状に構成される部分であり、継手7を挿入する挿入空間として機能する部分である。この円筒部16は、軸方向一端側(後端側)に底部22が形成され、軸方向他端側(前端側)に挿入口24が形成されており、前後方向に延びる円筒状に構成されると共に前側が開放した形態をなしている。底部22は、図1、図3(B)のように、装着状態のときにプラグ3を覆うように配置される部分である。また、挿入口24は、図5、図8(C)、図10のように、前面視円形状の開口領域が構成される開口部として構成され、図1のような装着状態のときにガスホースの端部5aに設けられた継手7(図10参照)が挿入可能とされている。   As shown in FIG. 1, the cylindrical portion 16 is a portion configured in a cylindrical shape on the front side (front side across the bottom portion 22) with respect to the storage space of the plug 3, and functions as an insertion space for inserting the joint 7. . The cylindrical portion 16 has a bottom portion 22 formed on one end side (rear end side) in the axial direction and an insertion port 24 formed on the other end side (front end side) in the axial direction, and is configured in a cylindrical shape extending in the front-rear direction. And the front side is open. As shown in FIGS. 1 and 3B, the bottom portion 22 is a portion that is disposed so as to cover the plug 3 when mounted. Further, as shown in FIGS. 5, 8C, and 10, the insertion port 24 is configured as an opening that forms an opening region having a circular shape when viewed from the front, and the gas hose in the mounted state as shown in FIG. A joint 7 (see FIG. 10) provided at the end portion 5a of the can be inserted.

このプラグカバー10は、同一形状の一対の半筒状部材50,60が筒状に連結された構成となっている。一方の半筒状部材50は、円筒部16を構成する部分の周方向一端側に係合部52が形成され、周方向他端部に揺動可能な係合片53が形成されている。他方の半筒状部材60も同一形状であるため同様であり、円筒部16を構成する部分の周方向一端側に係合部62が形成され、周方向他端部に揺動可能な係合片63が形成されている。なお、図13〜図17は、他方の半筒状部材60の構成をそれぞれ示しており、一方の半筒状部材50は半筒状部材60と同一の構成であるため、詳細な図示は省略している。   The plug cover 10 has a configuration in which a pair of semi-cylindrical members 50 and 60 having the same shape are connected in a cylindrical shape. One semi-cylindrical member 50 has an engaging portion 52 formed on one end side in the circumferential direction of a portion constituting the cylindrical portion 16, and an engaging piece 53 swingable on the other end in the circumferential direction. The other half-cylindrical member 60 has the same shape and is the same, and an engaging portion 62 is formed on one end side in the circumferential direction of the portion constituting the cylindrical portion 16 and swingable engagement on the other end in the circumferential direction. A piece 63 is formed. 13 to 17 show the configuration of the other semi-cylindrical member 60, respectively. Since one semi-cylindrical member 50 has the same configuration as the semi-cylindrical member 60, detailed illustration is omitted. doing.

このように構成される一対の半筒状部材50,60は、図11(A)(B)等で示すように、一方の半筒状部材50の係合片53が他方の半筒状部材60の係合部62と係合し(図5(A)、図6(B)等も参照)、他方の半筒状部材60の係合片63が一方の半筒状部材50の係合部52と係合(図5(B)、図6(A)等も参照)することで、図5、図6等のように各々の半筒状部材50,60が互いに連結した連結状態となり、装着部14及び円筒部16が構成されるようになっている。   As shown in FIGS. 11 (A) and 11 (B), the pair of semi-cylindrical members 50 and 60 configured as described above has the engaging piece 53 of one semi-cylindrical member 50 as the other semi-cylindrical member. 60 (see also FIG. 5A, FIG. 6B, etc.), and the engaging piece 63 of the other semi-cylindrical member 60 is engaged with one semi-cylindrical member 50. By engaging with the portion 52 (see also FIG. 5 (B), FIG. 6 (A), etc.), the semi-cylindrical members 50, 60 are connected to each other as shown in FIG. 5, FIG. The mounting portion 14 and the cylindrical portion 16 are configured.

他方の半筒状部材60の係合片63の構造は、図13〜図17のようになっており、円筒部16の一部をなす固定部分16aの周方向一端側に、板状に構成された係合片63が、ヒンジ部63aを中心として揺動し得るように構成されている。そして、この係合片63の先端寄りに一対の凸部64と、一対の突起部68とが形成されている。また、固定部分16aの周方向他端側には、一対の孔部として形成された係合部62が設けられている。そして、半筒状部材50,60が互いに連結するときには、図11、図12のように、係合片63の一対の凸部64,64が半筒状部材50に形成された係合部52(一対の孔部)に挿入された状態となり、且つ、係合片63の一対の突起部68,68が、半筒状部材50に形成された爪部59と係合するような保持状態となる。同様に、係合片53の一対の凸部54,54が半筒状部材60に形成された係合部62(一対の孔部)に挿入された状態となり、且つ、係合片53の一対の突起部58,58が、半筒状部材60に形成された爪部69と係合するような保持状態となる。このようにして、半筒状部材50,60が互いに連結した状態となり、周方向の二か所において係合状態が維持される。このように、2つの半筒状部材50,60は、軸方向一端側(前端側)に設けられた円筒部16において、周方向の2カ所(係合片53と係合部62の係合箇所、及び係合片63と係合部52の係合箇所)で連結状態が保たれるため、2つの半筒状部材50,60は、少なくともプラグカバー10の前端側の領域(円筒部16付近の領域)において安定的な結合状態となる。他方、図13(A)(B)で示すように、半筒状部材60において、連結時に半筒状部材50と接触する側の端面には、当該半筒状部材60の軸方向一端部寄り(後端部寄り)の位置(装着部14を構成する位置)に、突起部61aと孔部61bとがそれぞれ形成されている。また、図示はしていないが、半筒状部材60と同一形状となる半筒状部材50において軸方向一端部寄り(後端部寄り)の同一部分(突起部61a及び孔部61bとそれぞれ同一の部分)にも、突起部と孔部とがそれぞれ形成されている。そして、連結状態のときには半筒状部材60の突起部61aが半筒状部材50の孔部に挿入され、半筒状部材50の突起部が半筒状部材60の孔部61bに挿入されるようになっている。つまり、軸方向他端側(後端側)に設けられた装着部14の位置においても、半筒状部材50と半筒状部材60とが2カ所(図13で示す突起部61a、孔部61bのそれぞれの箇所)で嵌合するようになっている。このように、軸方向の一方側領域(前側領域)と、他方側領域(後ろ側領域)とに、連結構造がそれぞれ設けられているため、軸方向において連結位置が偏らず、より安定的な連結状態となる。   The structure of the engaging piece 63 of the other semi-cylindrical member 60 is as shown in FIGS. 13 to 17, and is configured in a plate shape on one end side in the circumferential direction of the fixed portion 16 a forming a part of the cylindrical portion 16. The engaged piece 63 is configured to be able to swing around the hinge part 63a. A pair of projections 64 and a pair of projections 68 are formed near the tip of the engagement piece 63. Moreover, the engaging part 62 formed as a pair of hole part is provided in the circumferential direction other end side of the fixing | fixed part 16a. When the semi-cylindrical members 50 and 60 are connected to each other, the pair of convex portions 64 and 64 of the engaging piece 63 are formed in the semi-cylindrical member 50 as shown in FIGS. A holding state in which the pair of protrusions 68 and 68 of the engagement piece 63 are engaged with the claw portion 59 formed in the semi-cylindrical member 50. Become. Similarly, the pair of convex portions 54, 54 of the engagement piece 53 is inserted into the engagement portion 62 (a pair of holes) formed in the semi-cylindrical member 60, and the pair of engagement pieces 53 The protrusions 58 and 58 are in a holding state such that they engage with the claw portion 69 formed in the semi-cylindrical member 60. In this way, the semi-cylindrical members 50 and 60 are connected to each other, and the engaged state is maintained at two locations in the circumferential direction. As described above, the two semi-cylindrical members 50 and 60 are provided at two positions in the circumferential direction (engagement between the engagement piece 53 and the engagement portion 62) in the cylindrical portion 16 provided on one end side (front end side) in the axial direction. The two semi-cylindrical members 50 and 60 are at least a region on the front end side of the plug cover 10 (cylindrical portion 16). In a nearby region), a stable coupled state is obtained. On the other hand, as shown in FIGS. 13 (A) and 13 (B), in the semi-cylindrical member 60, the end surface on the side that contacts the semi-cylindrical member 50 when connected is close to one end in the axial direction of the semi-cylindrical member 60. A protrusion 61a and a hole 61b are formed at positions (positions near the rear end) (positions constituting the mounting portion 14), respectively. In addition, although not shown, in the semi-cylindrical member 50 having the same shape as the semi-cylindrical member 60, the same portion (protruding portion 61a and hole portion 61b is the same) near one end in the axial direction (near the rear end). (Protrusion part) and a hole part are also formed in the part. In the connected state, the protrusion 61 a of the semi-cylindrical member 60 is inserted into the hole of the semi-cylindrical member 50, and the protrusion of the semi-cylindrical member 50 is inserted into the hole 61 b of the semi-cylindrical member 60. It is like that. That is, even at the position of the mounting portion 14 provided on the other end side (rear end side) in the axial direction, the semi-cylindrical member 50 and the semi-cylindrical member 60 are located at two locations (projection 61a and hole shown in FIG. 13). Each part 61b) is fitted. Thus, since the connection structure is provided in each of the one side area (front side area) and the other side area (rear side area) in the axial direction, the connection position is not biased in the axial direction and is more stable. Connected state.

また、図10、図11のように、各々の半筒状部材50,60に設けられた係合片53,63には、図10のような連結状態のときに円筒部16の軸方向に沿うように配置され且つ円筒部16の内側へ向けて突出する連結解除部56,66がそれぞれ形成されている。そして、各々の連結解除部56,66の突出側の端面56a,66aは、挿入口24側から底部22側に近づくにつれて円筒部16の中心軸(円筒の中心)に近づく傾斜面として構成されている。なお、図10の例では、連結解除部56,66の突出側の各端面56a,66aはいずれも、傾斜角度が相対的に大きい前方側の傾斜面と、傾斜角度が相対的に小さい後方側の傾斜面とを備えており、前方側の傾斜面同士が互いに向かい合い、後方側の傾斜面同士が互いに向かい合っている。そして、図10のように、両端面56a,66a(両傾斜面)の向かい合う間隔は、前端部での間隔が最も大きく、底部22に近づくにつれて次第に間隔が小さくなっている。そして、図10のような連結状態において、両端面56a,66a(即ち一対の傾斜面)における挿入口24側の端部間隔は、継手7の外形よりも大きくなっており、且つ両端面56a,66a(一対の傾斜面)における底部22側の端部間隔は、継手7の外形よりも小さい構成となっている。   Further, as shown in FIGS. 10 and 11, the engaging pieces 53 and 63 provided in the respective semi-cylindrical members 50 and 60 are arranged in the axial direction of the cylindrical portion 16 in the connected state as shown in FIG. Connection release portions 56 and 66 are formed so as to extend along the cylindrical portion 16 and protrude toward the inside. The projecting side end surfaces 56a and 66a of the connection release portions 56 and 66 are configured as inclined surfaces that approach the central axis (the center of the cylinder) of the cylindrical portion 16 from the insertion port 24 side toward the bottom portion 22 side. Yes. In the example of FIG. 10, the end surfaces 56a and 66a on the projecting side of the connection release portions 56 and 66 are both the front inclined surface with a relatively large inclination angle and the rear side with a relatively small inclination angle. The inclined surfaces on the front side face each other, and the inclined surfaces on the rear side face each other. As shown in FIG. 10, the distance between the opposite end surfaces 56 a and 66 a (both inclined surfaces) is the largest at the front end, and gradually decreases toward the bottom 22. In the connected state as shown in FIG. 10, the end portion spacing on the insertion port 24 side on both end surfaces 56a, 66a (that is, a pair of inclined surfaces) is larger than the outer shape of the joint 7, and both end surfaces 56a, An end portion distance on the bottom portion 22 side in 66 a (a pair of inclined surfaces) is smaller than the outer shape of the joint 7.

このように構成されるプラグカバー10は、図10で示すように、挿入口24側から継手7が挿入されたとき、この継手7を両端面56a,66a(両傾斜面)の間において両端面56a,66aの前端部よりも奥側(底部20側)に入れることができ、更に、この継手7が、底部22側に向けて軸方向に押し込まれたときには、当該継手7によって両端面56a,66a(一対の傾斜面)が互いに押し広げられ、各々の係合片53,63が外側に変位することになる。例えば、係合片53では、突起部58と爪部69との係合を解除しつつ係合片53が半筒状部材60の周方向端部から離れるように変位し(図11(A)の矢印F2、図11(B)の矢印F4参照)、これにより、凸部54が係合部62(孔部)から抜けて係合片53と係合部62との係合が解除される。係合片63でも同様であり、突起部68と爪部59との係合を解除しつつ係合片63が半筒状部材50の周方向端部から離れるように変位し(図11(A)、図12(A)の矢印F1、図11(B)、図12(B)の矢印F3参照)、これにより、凸部64が係合部52(孔部)から抜けて係合片63と係合部52との係合が解除される。   As shown in FIG. 10, when the joint 7 is inserted from the insertion port 24 side, the plug cover 10 configured as described above has both end faces between the both end faces 56a and 66a (both inclined faces). 56a, 66a can be inserted deeper (bottom 20 side) than the front end portion, and when the joint 7 is pushed in the axial direction toward the bottom portion 22 side, both ends 56a, 66a (a pair of inclined surfaces) is pushed apart, and the respective engagement pieces 53, 63 are displaced outward. For example, in the engagement piece 53, the engagement piece 53 is displaced away from the circumferential end of the semi-cylindrical member 60 while releasing the engagement between the protrusion 58 and the claw 69 (FIG. 11A). (See arrow F2 in FIG. 11 and arrow F4 in FIG. 11B), whereby the convex portion 54 comes out of the engaging portion 62 (hole) and the engagement between the engaging piece 53 and the engaging portion 62 is released. . The same applies to the engagement piece 63, and the engagement piece 63 is displaced away from the circumferential end of the semi-cylindrical member 50 while releasing the engagement between the projection 68 and the claw 59 (FIG. 11A). ), The arrow F1 in FIG. 12A, and the arrow F3 in FIG. 11B and FIG. 12B), whereby the convex portion 64 comes out of the engaging portion 52 (hole) and the engaging piece 63. And the engaging portion 52 are disengaged.

なお、周方向の二か所の係合箇所(即ち、係合片63と係合部52との係合箇所、及び係合片53と係合部62との係合箇所)のうちの少なくとも一か所で上述した係合解除がなされればプラグカバー10の内部を開放することができるため、プラグ3を取り外すことが可能となるのである。一方、図10において符号Zで示すように、継手の無いガスホース(例えば、内径が両端面56a,66aの最小間隔よりも小さいガスホース等)が挿入口24から挿入されたとしても、このガスホースでは、両端面56a,66aを強い力で押し広げることができないため、両係合片53,63の係合をいずれも解除できず、連結状態が維持されることになる。   It should be noted that at least two of the circumferential engagement points (that is, the engagement point between the engagement piece 63 and the engagement portion 52 and the engagement point between the engagement piece 53 and the engagement portion 62). If the above-described disengagement is made at one place, the inside of the plug cover 10 can be opened, so that the plug 3 can be removed. On the other hand, even if a gas hose without a joint (for example, a gas hose whose inner diameter is smaller than the minimum interval between the end faces 56a and 66a) is inserted from the insertion port 24 as shown by a symbol Z in FIG. Since both end faces 56a and 66a cannot be pushed out with a strong force, the engagement of both engagement pieces 53 and 63 cannot be released, and the connected state is maintained.

(本構成の主な効果)
本構成では、別部材として構成された2つの半筒状部材50,60が周方向の二か所で互いに連結された構成となっており、取り外しの際には、継手7の挿入により、連結された二か所のうちの少なくとも一か所の連結を解除してその箇所を分離できれば、プラグカバー10を開放することができる。例えば、製造バラツキ等の理由により連結箇所の一方が非常に強固に係合し、継手7の挿入力では連結が解除されにくい状態であったとしても、この継手7によって他方の連結箇所を解除すれば、2つの半筒状部材50,60を容易に開放状態にすることができ、プラグカバー10をプラグ3から取り外すことができるようになる。ゆえに、「ある程度の力で継手7を挿入してもプラグカバー10を解放できない」といった解除不良が生じにくくなる。しかも、二か所のうちの少なくとも一か所の連結を解除できた時点でプラグカバー10を開放することができるため、プラグカバー10の取り外しの際には、一方の連結を解除できる程度に継手7を挿入すればよく、継手7を挿入する力や挿入する深さを低減しやすくなる。
(Main effects of this configuration)
In this configuration, the two semi-cylindrical members 50 and 60 configured as separate members are connected to each other at two locations in the circumferential direction. If the connection of at least one of the two places is released and the place can be separated, the plug cover 10 can be opened. For example, even if one of the connection locations is very firmly engaged due to manufacturing variation or the like, and the connection is difficult to be released by the insertion force of the joint 7, the other connection location can be released by this joint 7. For example, the two semi-cylindrical members 50 and 60 can be easily opened, and the plug cover 10 can be removed from the plug 3. Therefore, it becomes difficult to cause a release failure such as “the plug cover 10 cannot be released even if the joint 7 is inserted with a certain amount of force”. In addition, since the plug cover 10 can be opened when the connection of at least one of the two locations can be released, the joint can be removed to the extent that one of the connections can be released when the plug cover 10 is removed. 7 can be inserted, and the force for inserting the joint 7 and the insertion depth can be easily reduced.

また、本構成では、一方の半筒状部材50と他方の半筒状部材60とが同一形状となっている。この構成によれば、2つの半筒状部材50,60を同一の加工方法で形成することができ、同一の部品として管理することができるため、製造に伴うコストや管理負担を効果的に低減することができる。   Moreover, in this structure, the one half cylindrical member 50 and the other half cylindrical member 60 have the same shape. According to this configuration, the two semi-cylindrical members 50 and 60 can be formed by the same processing method and can be managed as the same component, so that the cost and management burden associated with the production can be effectively reduced. can do.

例えば、金型を用いた成型加工(公知の射出成型加工等)によって2つの半筒状部材50,60を製造する場合、同一の金型によって2つの半筒状部材50,60を製造することができる。つまり、この場合、特許文献1のようなプラグカバーを金型によって製造する場合等と比較して金型サイズを小さく抑えやすく、それでいて、金型の種類数を増やさなくても済むため、製造コストをより効果的に低減しやすくなる。   For example, when the two half-cylinder members 50 and 60 are manufactured by molding using a mold (a known injection molding process or the like), the two half-cylinder members 50 and 60 are manufactured by the same mold. Can do. That is, in this case, the manufacturing cost can be reduced because it is easy to keep the mold size small compared to the case where the plug cover as in Patent Document 1 is manufactured using a mold, and the number of mold types does not need to be increased. Can be reduced more effectively.

更に、2つの連結箇所の各構造が、円筒部16の中心(円筒軸)を中心とした対称の構造となっており、円筒軸を中心とした対称位置において、「一方の半筒状部材50の係合片53が他方の半筒状部材60の係合部62と係合し、他方の半筒状部材60の係合片63が一方の半筒状部材50の係合部52と係合する構造」となっているため、連結箇所の位置的な偏りが抑えられ、連結状態の安定化を図り易くなる。また、このように連結箇所の位置的な偏りが抑えられた構成では、継手7の挿入時に、「継手7が一方の連結箇所のみに極端に作用する」といった問題が生じにくく、継手7による押圧力が両連結箇所に確実に作用しやすくなる。つまり、継手7の挿入時に両連結箇所がいずれも解除されないといった解除不良が生じにくく、いずれか一方の連結箇所が早期に解除されやすいため、迅速な連結解除が可能になる。   Further, each structure of the two connecting portions has a symmetrical structure with the center (cylindrical axis) of the cylindrical portion 16 as the center, and at the symmetrical position with the cylindrical axis as the center, “one half-cylindrical member 50. Is engaged with the engaging portion 62 of the other semi-cylindrical member 60, and the engaging piece 63 of the other semi-cylindrical member 60 is engaged with the engaging portion 52 of one semi-cylindrical member 50. Therefore, the positional deviation of the connected portions can be suppressed, and the connected state can be easily stabilized. In addition, in such a configuration in which the positional deviation of the connection portion is suppressed, the problem that “the joint 7 acts extremely only on one connection portion” does not easily occur when the joint 7 is inserted. It becomes easy for the pressure to act on both connecting portions reliably. That is, it is difficult to cause a release failure such that neither of the connection points is released when the joint 7 is inserted, and one of the connection points is easily released at an early stage, so that quick connection release is possible.

[他の実施形態]
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
[Other Embodiments]
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

上記実施形態では、半筒状部材50と半筒状部材60とが完全に同一の形状である構成を例示したが、半筒状部材50と半筒状部材60とが完全に同一の形状でなくてもよい。   In the above embodiment, the configuration in which the semi-cylindrical member 50 and the semi-cylindrical member 60 are completely the same shape is illustrated, but the semi-cylindrical member 50 and the semi-cylindrical member 60 are completely identical in shape. It does not have to be.

上記実施形態では、半筒状部材50及び半筒状部材60が金型を用いた射出成型によって構成される例を示したが、半筒状部材50及び半筒状部材60の製造方法はこの例に限定されず、公知の他の製造方法を用いてもよい。   In the above embodiment, an example in which the semi-cylindrical member 50 and the semi-cylindrical member 60 are configured by injection molding using a mold is shown. It is not limited to an example, You may use the other well-known manufacturing method.

1…ガス燃焼機器
3…プラグ
5a…ガスコード先端部
7…継手
10…プラグカバー
14…装着部
16…円筒部
22…底部
24…挿入口
50,60…半筒状部材
52,62…係合部
53,63…係合片
56,66…連結解除部
56a,66a…突出側の端面
100…連結構造
DESCRIPTION OF SYMBOLS 1 ... Gas combustion apparatus 3 ... Plug 5a ... Gas code front-end | tip part 7 ... Joint 10 ... Plug cover 14 ... Mounting part 16 ... Cylindrical part 22 ... Bottom part 24 ... Insertion port 50, 60 ... Half cylindrical member 52, 62 ... Engagement Part 53, 63 ... Engagement piece 56, 66 ... Connection release part 56a, 66a ... Projection end face 100 ... Connection structure

Claims (4)

ガスコード先端部に設けられた継手が着脱可能に装着されるプラグを備えたガス燃焼機器に取り付けられ、前記プラグに装着された装着状態を前記継手によって解除することが可能とされた軸状のプラグカバーであって、
前記プラグに装着される装着部と、円筒状に構成されると共に前記装着部に連結される円筒部と、を備え、前記円筒部の軸方向一端側には前記装着状態のときに前記プラグを覆うように配置される底部が設けられ、前記円筒部の軸方向他端側には前記装着状態のときに前記継手が挿入可能とされた挿入口が形成され、前記装着部及び前記円筒部が軸方向に沿って分断された形で一対の半筒状部材が構成されており、
各々の前記半筒状部材は、前記円筒部を構成する部分の周方向一端側に係合部が形成され、周方向他端部に揺動可能な係合片が形成されており、一方の前記半筒状部材の前記係合片が他方の前記半筒状部材の前記係合部に対し外側から係合し、他方の前記半筒状部材の前記係合片が一方の前記半筒状部材の前記係合部に対し外側から係合することで、各々の前記半筒状部材が互いに連結した連結状態となり、前記装着部及び前記円筒部が構成されるようになっており、いずれの前記係合片も、外側に変位することで前記係合部との係合が解除されるようになっており、
各々の前記半筒状部材に設けられた前記係合片には、前記連結状態のときに前記円筒部の軸方向に沿うように配置され且つ前記円筒部の内側へ向けて突出する連結解除部がそれぞれ形成され、各々の前記連結解除部の突出側の端面は、前記挿入口側から前記底部側に近づくにつれて前記円筒部の中心軸に近づく傾斜面として構成され、
前記連結状態のときに、一対の前記傾斜面における前記挿入口側の端部間隔が前記継手の外形よりも大きく、且つ一対の前記傾斜面における前記底部側の端部間隔が前記継手の外形よりも小さい構成となっており、
前記連結状態のときに前記継手が前記円筒部の前記挿入口側から前記底部側に押し込まれることで当該継手によって一対の前記傾斜面が互いに押し広げられることを特徴とするプラグカバー。
A joint provided at the tip of the gas cord is attached to a gas combustion device having a plug that is detachably attached, and the attached state attached to the plug can be released by the joint. A plug cover,
A mounting portion that is mounted on the plug; and a cylindrical portion that is configured in a cylindrical shape and that is coupled to the mounting portion, and the plug is attached to one end in the axial direction of the cylindrical portion in the mounted state. A bottom portion is provided so as to cover, and an insertion port through which the joint can be inserted in the mounted state is formed on the other axial end of the cylindrical portion, and the mounting portion and the cylindrical portion are A pair of semi-cylindrical members are configured in a form divided along the axial direction,
Each of the semi-cylindrical members has an engaging portion formed at one end in the circumferential direction of a portion constituting the cylindrical portion, and an engaging piece that can swing at the other end in the circumferential direction. The engaging piece of the semi-cylindrical member is engaged with the engaging portion of the other semi-cylindrical member from the outside, and the engaging piece of the other semi-cylindrical member is one half-cylindrical shape. By engaging the engagement portion of the member from the outside, the semi-cylindrical members are connected to each other, and the mounting portion and the cylindrical portion are configured. The engagement piece is also disengaged from the engagement portion by being displaced outward,
The engagement piece provided in each of the semi-cylindrical members is disposed so as to be along the axial direction of the cylindrical portion in the connected state and protrudes toward the inside of the cylindrical portion. Is formed, and the end surface on the protruding side of each of the connection release portions is configured as an inclined surface that approaches the central axis of the cylindrical portion as it approaches the bottom side from the insertion port side,
In the connected state, the gap between the end portions on the insertion port side of the pair of inclined surfaces is larger than the outer shape of the joint, and the interval between the bottom sides of the pair of inclined surfaces is larger than the outer shape of the joint. Is also a small configuration,
The plug cover, wherein the joint is pushed from the insertion port side to the bottom side of the cylindrical portion in the connected state so that the pair of inclined surfaces are spread out by the joint.
一方の前記半筒状部材と他方の前記半筒状部材とが同一形状となっていることを特徴とする請求項1に記載のプラグカバー。   The plug cover according to claim 1, wherein one of the semi-cylindrical members and the other semi-cylindrical member have the same shape. 各々の前記半筒状部材は、前記連結状態のときに互いに接触する側の端面に突起部と孔部とがそれぞれ形成されており、  Each of the semi-cylindrical members is formed with a protrusion and a hole on the end surfaces on the side in contact with each other in the connected state,
前記連結状態のときには、一方の前記半筒状部材の突起部が他方の前記半筒状部材の孔部に挿入された状態となり、他方の前記半筒状部材の突起部が一方の前記半筒状部材の孔部に挿入された状態となる請求項1又は請求項2に記載のプラグカバー。  When in the connected state, the protruding portion of one of the semi-cylindrical members is inserted into the hole of the other semi-cylindrical member, and the protruding portion of the other semi-cylindrical member is one of the half tubes The plug cover according to claim 1 or 2 which will be in the state where it was inserted in the hole of a shaped member.
各々の前記半筒状部材に設けられた前記係合片は、前記連結状態のときに前記底部を前記円筒部の軸方向に跨ぐように形成されている請求項1から請求項3のいずれか一項に記載のプラグカバー。  The engagement piece provided in each of the semi-cylindrical members is formed so as to straddle the bottom portion in the axial direction of the cylindrical portion in the connected state. The plug cover according to one item.
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