JP2013169223A - Connector - Google Patents

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JP2013169223A
JP2013169223A JP2012032943A JP2012032943A JP2013169223A JP 2013169223 A JP2013169223 A JP 2013169223A JP 2012032943 A JP2012032943 A JP 2012032943A JP 2012032943 A JP2012032943 A JP 2012032943A JP 2013169223 A JP2013169223 A JP 2013169223A
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engaging
portions
engagement
main body
pair
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JP5784524B2 (en
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Akihiko Toshimitsu
昭彦 利光
Terumi Kamei
輝美 亀井
Shunsuke Okano
俊介 岡野
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OKANO SEISAKUSHO KK
OKANO WORKS
Morito Co Ltd
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OKANO SEISAKUSHO KK
OKANO WORKS
Morito Co Ltd
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  • Helmets And Other Head Coverings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a connector that reduces troublesomeness in connection by allowing an engaging piece to reliably and easily reach an insertion port and is not connected in a twisted state of bands.SOLUTION: A connector 1 includes: a body 2 for supporting engaging portions 7 and 7 and allowing engaging pawls of the engaging portions 7 and 7 to be separable; an insertion/extraction body 31 having an engaging piece 32 and connected to the body 2 by the engagement of the engaging pawls; a first urging member for urging inner side parts of the engaging portions 7 and 7 to an exterior part of a storage portion 5; a second urging member for urging the engaging piece 32 engaged with the engaging pawls to an exterior part of the storage portion 5 and also pushing out the engaging piece 32 to an exterior part of the storage portion 5 when the engagement is released; and a resin cover 21 arranged on an outer peripheral surface of the body 2. A lower plate 4 is extended in an insertion/extraction direction X at an insertion port 16. The resin cover 21 includes a guide groove 24 communicating with the insertion port 16. A notch 25 (18) is arranged in the resin cover 21 (and an upper plate). The insertion/extraction body 31 includes a projection 34 positioned inside the notch 25 (18) when the engaging piece 32 is engaged.

Description

本発明は、主にヘルメットの顎紐などに用いる連結具に関する。   The present invention relates to a connector mainly used for a chin strap of a helmet.

従来、ヘルメットの顎紐などに用いる連結具として、本願出願人が先に特許出願した、下記特許文献１に開示される連結具がある。図７に示すように、この連結具１００は、本体１０１と、挿脱体１０７とから構成されている。本体１０１は、扁平形状であり、上板１０２と下板１０３の間に収容部１０４となる空間が形成されている。本体１０１の一方端部には挿脱体１０７の係合片１０８を収容部１０４内へと挿通させるための挿通口１０５が設けられ、本体１０１の他方端部には平帯状の紐類（ヘルメットの一方顎紐）が取り付けられる環部１０６が設けられている。挿脱体１０７は、一方端部に係合片１０８を有している。また、挿脱体１０７の他方端部には平帯状の紐類（ヘルメットの他方顎紐）が取り付けられる環部１０９が設けられている。   Conventionally, as a connector used for a chin strap of a helmet or the like, there is a connector disclosed in Patent Document 1 described below, which was previously filed by the applicant of the present application. As shown in FIG. 7, the connector 100 includes a main body 101 and an insertion / removal body 107. The main body 101 has a flat shape, and a space serving as the accommodating portion 104 is formed between the upper plate 102 and the lower plate 103. An insertion port 105 through which the engagement piece 108 of the insertion / removal body 107 is inserted into the housing portion 104 is provided at one end portion of the main body 101, and a flat belt-like string (helmet) is provided at the other end portion of the main body 101. A ring portion 106 to which one of the chin straps is attached is provided. The insertion / removal body 107 has an engagement piece 108 at one end. An annular portion 109 to which a flat belt-like string (the other chin strap of the helmet) is attached is provided at the other end of the insertion / removal body 107.

連結具１００では、図８（ａ）に示すように、挿脱体１０７の係合片１０８が本体１０１の挿通口１０５（図７参照）から収容部１０４内に挿通されると、係合片１０８が係合爪１１０，１１０を押し広げるようにして係合爪１１０，１１０の間に挿通され、係合片１０８と係合爪１１０，１１０が係合する。係合爪１１０，１１０は、第一の付勢部材（捩じりコイルばね）１１１によって互いに近接するように付勢されているため、係合片１０８と係合爪１１０，１１０の係合が勝手に外れることはない。これにより、本体１０１と挿脱体１０７は略一体的に連結される。すなわち、一方顎紐と他方顎紐（図７参照）は連結される。このとき、収容部１０４内に挿通された係合片１０８は、その先端部１０８ａが第二の付勢部材（捩じりコイルばね）１１２のコイル部１１２ａを押し込むため、収容部１０４の外方に向けて付勢された状態となる。   In the connector 100, as shown in FIG. 8A, when the engagement piece 108 of the insertion / removal body 107 is inserted into the housing portion 104 from the insertion port 105 (see FIG. 7) of the main body 101, the engagement piece 108 is inserted between the engaging claws 110 and 110 so as to push the engaging claws 110 and 110 apart, and the engaging piece 108 and the engaging claws 110 and 110 are engaged. Since the engaging claws 110 and 110 are biased so as to be close to each other by the first biasing member (torsion coil spring) 111, the engagement piece 108 and the engaging claws 110 and 110 are engaged. It will never come off. Thereby, the main body 101 and the insertion / removal body 107 are connected substantially integrally. That is, the one chin strap and the other chin strap (see FIG. 7) are connected. At this time, the engaging piece 108 inserted into the accommodating portion 104 has a distal end portion 108a that pushes the coil portion 112a of the second urging member (torsion coil spring) 112. It becomes the state urged toward.

第一の付勢部材としての捩じりコイルばね１１１は、その両腕部１１１ｂ，１１１ｂを一対の係合部１１３，１１３のそれぞれの内側部１１３ａ，１１３ａに当接させて、これを収容部１０４の外方に向けて押し広げることで係合爪１１０，１１０が近接するように付勢する。また、第二の付勢部材としての捩じりコイルばね１１２は、その両腕部１１２ｂ，１１２ｂが固定されているため、コイル部１１２ａが係合片１０８の先端部１０８ａに押され、係合片１０８を収容部１０４の外方に向けて付勢する。   The torsion coil spring 111 as the first urging member has its both arm portions 111b and 111b abutted against the inner portions 113a and 113a of the pair of engaging portions 113 and 113, respectively, and accommodates them. The engaging claws 110 and 110 are urged so as to be close to each other by being spread outward toward the outer side of 104. Further, since the torsion coil spring 112 as the second urging member has both arms 112b and 112b fixed, the coil portion 112a is pushed by the tip end portion 108a of the engagement piece 108 and engaged. The piece 108 is urged toward the outside of the housing portion 104.

連結された本体１０１と挿脱体１０７を分離させるときには、図８（ｂ）に示すように、一対の係合部１１３，１１３のそれぞれの外側部（操作部）１１３ｂ，１１３ｂを収容部１０４の内方に向けて押動操作すると、捩じりコイルばね１１１の付勢力に抗して係合爪１１０，１１０が離間し、係合爪１１０，１１０と係合片１０８の係合が解除される。これと同時に、それまで係合片１０８の先端部１０８ａに押されていた捩じりコイルばね１１２のコイル部１１２ａが、捩じりコイルばね１１２の付勢力によって、係合爪１１０，１１０との係合が外れた係合片１０８を押し出すように移動する。これにより、係合片１０８が収容部１０４外に押し出されて、挿脱体１０７は本体１０１から外れる。   When separating the connected main body 101 and the insertion / removal body 107, as shown in FIG. 8 (b), the outer portions (operation portions) 113b and 113b of the pair of engagement portions 113 and 113 are placed in the housing portion 104, respectively. When the pushing operation is performed inward, the engaging claws 110 and 110 are separated from each other against the biasing force of the torsion coil spring 111, and the engagement between the engaging claws 110 and 110 and the engaging piece 108 is released. The At the same time, the coil portion 112 a of the torsion coil spring 112 that has been pushed by the tip end portion 108 a of the engagement piece 108 is engaged with the engagement claws 110 and 110 by the biasing force of the torsion coil spring 112. The engagement piece 108 that has been disengaged moves so as to be pushed out. As a result, the engagement piece 108 is pushed out of the housing portion 104, and the insertion / removal body 107 is detached from the main body 101.

連結具１００によれば、連結された本体１０１と挿脱体１０７を分離させるときは、操作部１１３ｂ，１１３ｂを押動操作すると、係合爪１１０，１１０と係合片１０８の係合が外れて係合片１０８が収容部１０４外へと押し出され、連結された本体１０１と挿脱体１０７を片手による一操作で確実に分離可能となる。また、本体１０１と挿脱体１０７を連結させるときは、本体１０１の挿通口１０５にて、挿脱体１０７の挿脱方向に延出している下板１０３が挿脱体１０７の係合片１０８をガイドするため、本体１０１と挿脱体１０７の連結が容易となる。   According to the connector 100, when the connected main body 101 and the insertion / removal body 107 are separated, if the operation portions 113b and 113b are pushed, the engagement claws 110 and 110 and the engagement piece 108 are disengaged. Thus, the engaging piece 108 is pushed out of the accommodating portion 104, and the connected main body 101 and insertion / removal body 107 can be reliably separated by one operation with one hand. Further, when connecting the main body 101 and the insertion / removal body 107, the lower plate 103 extending in the insertion / removal direction of the insertion / removal body 107 is inserted into the engagement piece 108 of the insertion / removal body 107 at the insertion port 105 of the main body 101. Therefore, the connection between the main body 101 and the insertion / removal body 107 is facilitated.

特開２０１１−３１７号公報JP 2011-317 A

通常、ヘルメットの顎紐に用いるような連結具は、素肌に触れることもあって、主に金属からなる本体にはその周りを覆うように合成樹脂などからなるカバーが設けられている。図７及び８には示していないが、上述した連結具１００にも、本体１０１が露出しないように本体１０１の外周面に樹脂カバーが設けられている。このような樹脂カバーは本体１０１を単に被覆するだけのものであった。ところで、連結具をヘルメットの顎紐に用いた場合、ヘルメットを着用するときは使用者から連結具の様子が見えない。したがって、使用者は、本体と挿脱体を連結させるとき手探りによらなければならず、煩わしさを感じることがあった。連結具１００は、このような煩わしさを軽減させるために、収容部１０４を形成している上板１０２と下板１０３のうち、下板１０３を上板１０２よりも挿脱体１０７の挿脱方向に延出させることで、挿通口１０５において、下板１０３が挿脱体１０７の係合片１０８をガイドするようになり、係合片１０８と挿通口１０５の位置合せを容易に行えるものであった。   Usually, a connecting tool used for a chin strap of a helmet may touch the bare skin, and a main body mainly made of metal is provided with a cover made of synthetic resin or the like so as to cover the periphery thereof. Although not shown in FIGS. 7 and 8, the connector 100 described above is also provided with a resin cover on the outer peripheral surface of the main body 101 so that the main body 101 is not exposed. Such a resin cover merely covers the main body 101. By the way, when the coupling tool is used for the chin strap of the helmet, when the helmet is worn, the state of the coupling tool cannot be seen from the user. Therefore, the user has to rely on groping when connecting the main body and the insertion / removal body, and may feel annoying. In order to reduce such annoyance, the connecting device 100 inserts / removes the lower plate 103 into and out of the upper plate 102 out of the upper plate 102 and the lower plate 103 forming the housing portion 104. By extending in the direction, the lower plate 103 guides the engagement piece 108 of the insertion / removal body 107 at the insertion port 105, and the engagement piece 108 and the insertion port 105 can be easily aligned. there were.

しかしながら、上述した連結具１００では、挿脱体１０７の係合片１０８を下板１０３に当接させるところまでは手探りによらなければならなかった。そのため、係合片１０８を下板１０３に当接させる、すなわち、係合片１０８を挿通口１０５に到達させるまでの確実性に乏しく、使用者はこの点でまだ煩わしさを感じていた。   However, in the connecting tool 100 described above, it has been necessary to grope until the engaging piece 108 of the insertion / removal member 107 is brought into contact with the lower plate 103. For this reason, there is a lack of certainty until the engagement piece 108 is brought into contact with the lower plate 103, that is, until the engagement piece 108 reaches the insertion port 105, and the user still feels bothered in this respect.

また一般に、ヘルメットの顎紐においては、使用者から連結具が見えなくても、顎紐が捩じれた状態で連結されることを防ぐために係合片を正しい向きで挿通口から収容部内へと挿通させる必要があった。   Also, in general, in the chin strap of a helmet, even if the connection tool is not visible to the user, the engagement piece is inserted from the insertion port into the housing portion in the correct orientation to prevent the chin strap from being connected in a twisted state. It was necessary to let them.

そこで本発明は、上記状況に鑑みてなされたもので、本体と挿脱体を連結させるとき、係合片を挿通口に確実且つ容易に到達させることができ、連結時の煩わしさを更に軽減し、また、紐類が捩じれた状態で連結されることを確実に防止することができる連結具を提供することを目的としている。   Therefore, the present invention has been made in view of the above situation, and when connecting the main body and the insertion / removal body, the engagement piece can be surely and easily reached the insertion port, further reducing the troublesomeness at the time of connection. In addition, it is an object of the present invention to provide a connector that can reliably prevent the strings from being connected in a twisted state.

次に、上記の課題を解決するための手段を、実施の形態に対応する図面を参照して説明する。
本発明に係る請求項１記載の連結具は、収容部５内において、先端部に設けられた係合爪８，８が対向するとともに前記収容部５外に外側部（操作部）９，９が延出する一対の係合部７，７を前記係合爪８，８が接離可能となるように揺動支持し、
前記外側部（操作部）９，９を前記収容部５の内方へと押動操作して前記係合爪８，８を互いに離間させることを可能にする本体２と、
前記収容部５への挿通口１６から前記一対の係合部７，７の前記係合爪８，８の間に挿通されて該係合爪８，８と係合する係合片３２を有し、該係合片３２が前記係合爪８，８と係合することで前記本体２と略一体的に連結する挿脱体３１と、
前記収容部５内において、前記一対の係合部７，７のそれぞれの内側部１０，１０を前記収容部５の外方に向けて付勢するとともに、前記係合爪８，８と係合した前記係合片３２を前記収容部５の外方に向けて付勢する機能と、前記一対の係合部７，７の前記外側部（操作部）９，９の前記押動操作によって前記係合爪８，８が互いに離間することで前記係合片３２との係合が解除されると該係合片３２を前記収容部５外へと押し出す機能を有する付勢部材１１，１２と、
前記本体２を覆うように該本体２の外周面に設けられ、前記挿通口１６と前記一対の係合部７，７の前記外側部（操作部）９，９を出現させる開口２２，２３，２３を有する、合成樹脂からなるカバー２１と、を備えた連結具１において、
前記本体２は、扁平形状であり、
前記挿通口１６において、前記本体２の上面を形成するとともにその端縁部３ｂが前記挿通口１６の上辺を形成する上板３よりも前記本体２の下面を形成するとともにその端縁部４ｂが前記挿通口１６の下辺を形成する下板４が前記挿脱体１６の挿脱方向Ｘに延出して設けられ、
前記カバー２１には、前記上板３側の面に前記挿通口１６へと通じるガイド溝２４が設けられたことを特徴としている。 Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
In the connector according to the first aspect of the present invention, the engaging claws 8, 8 provided at the tip end face each other in the housing portion 5, and outside portions (operation portions) 9, 9 outside the housing portion 5. Oscillate and support the pair of engaging portions 7 and 7 so that the engaging claws 8 and 8 can contact and separate,
A body 2 that allows the outer claws 8 and 8 to be separated from each other by pushing the outer portions (operation portions) 9 and 9 inward of the housing portion 5;
There is an engagement piece 32 that is inserted between the engagement claws 8 and 8 of the pair of engagement portions 7 and 7 through the insertion port 16 to the housing portion 5 and engages with the engagement claws 8 and 8. The engaging piece 32 is engaged with the engaging claws 8 and 8 so as to be connected to the main body 2 substantially integrally;
In the housing portion 5, the inner portions 10, 10 of the pair of engaging portions 7, 7 are urged toward the outside of the housing portion 5 and are engaged with the engaging claws 8, 8. The function of urging the engaging piece 32 toward the outside of the accommodating portion 5 and the pushing operation of the outer portions (operation portions) 9 and 9 of the pair of engaging portions 7 and 7 Energizing members 11 and 12 having a function of pushing the engaging piece 32 out of the accommodating portion 5 when the engaging claws 8 and 8 are separated from each other to release the engagement with the engaging piece 32. ,
Openings 22, 23, which are provided on the outer peripheral surface of the main body 2 so as to cover the main body 2, and allow the outer portions (operation portions) 9, 9 of the pair of engagement portions 7, 7 to appear. A connector 21 having a cover 21 made of synthetic resin,
The main body 2 has a flat shape,
In the insertion port 16, the upper surface of the main body 2 is formed and the end edge portion 3 b forms the lower surface of the main body 2 rather than the upper plate 3 forming the upper side of the insertion port 16, and the end edge portion 4 b is A lower plate 4 forming a lower side of the insertion opening 16 is provided extending in the insertion / removal direction X of the insertion / removal body 16;
The cover 21 is characterized in that a guide groove 24 communicating with the insertion port 16 is provided on the surface on the upper plate 3 side.

このような構成（請求項１に記載の構成）によれば、本体２と挿脱体３１を連結させるとき、本体２の外周面に設けられた樹脂カバー２１のガイド溝２４に沿って挿脱体３１の係合片３２を移動させれば、係合片３２を挿通口１６まで確実且つ容易に到達させることができる。これにより、使用者の連結時の煩わしさを更に軽減することができる。   According to such a configuration (the configuration described in claim 1), when connecting the main body 2 and the insertion / removal body 31, the insertion / removal is performed along the guide groove 24 of the resin cover 21 provided on the outer peripheral surface of the main body 2. If the engagement piece 32 of the body 31 is moved, the engagement piece 32 can be reliably and easily reached to the insertion port 16. Thereby, the troublesomeness at the time of a user's connection can further be reduced.

また、本体２が扁平形状であるため、ヘルメットの顎紐Ａ1 ，Ａ2 などに用いることに適した薄型の連結具となる。 Moreover, since the main body 2 has a flat shape, it becomes a thin connector suitable for use in the chin straps A 1 and A 2 of the helmet.

さらに、挿通口１６において、上板３よりも挿脱体３１の挿脱方向Ｘに延出している下板４の端縁部４ｂが係合片３２を挿通口１６までガイドするようになる。これにより、本体２と挿脱体３１の連結が容易となる。   Further, the end edge 4 b of the lower plate 4 extending in the insertion / removal direction X of the insertion / removal body 31 from the upper plate 3 guides the engagement piece 32 to the insertion port 16 at the insertion port 16. Thereby, connection with the main body 2 and the insertion / removal body 31 becomes easy.

また、本体２と挿脱体３１を分離させるときは、使用者は片手による一操作で確実に分離させることができる。   Moreover, when separating the main body 2 and the insertion / removal body 31, the user can reliably separate by one operation with one hand.

請求項２記載の連結具は、請求項１記載の連結具において、前記本体２の前記上板３の端縁部３ｂ及び前記カバー２１の前記上板３側の面の端縁部には共に共通の切欠き１８，２５が設けられ、
前記挿脱体３１には、前記係合片３２の近傍に該係合片３２が前記一対の係合部７，７の前記係合爪８，８と係合したときはその少なくとも一部が前記切欠き１８，２５内に位置する凸部３４が設けられたことを特徴としている。 The connector according to claim 2 is the connector according to claim 1, wherein both the end edge portion 3 b of the upper plate 3 of the main body 2 and the end edge portion of the surface of the cover 21 on the upper plate 3 side are provided. Common notches 18, 25 are provided,
When the engaging piece 32 engages with the engaging claws 8 and 8 of the pair of engaging portions 7 and 7 in the vicinity of the engaging piece 32, at least a part of the inserting / removing body 31 is provided. Protruding portions 34 located in the notches 18 and 25 are provided.

このような構成（請求項２に記載の構成）によれば、本体２（挿通口１６）に対して挿脱体３１を誤った向きで挿通させると、係合片３２近傍の凸部３４が挿通口１６の下辺を形成する下板４の端縁部４ｂに当接して係合片３２が収容部５内に挿通されない。これにより、紐類Ａ1 ，Ａ2 が捩じれた状態で連結されることを確実に防止することができる。 According to such a configuration (configuration described in claim 2), when the insertion / removal body 31 is inserted in the wrong direction with respect to the main body 2 (insertion port 16), the convex portion 34 in the vicinity of the engagement piece 32 is formed. The engagement piece 32 is not inserted into the accommodating portion 5 by abutting against the end edge portion 4 b of the lower plate 4 that forms the lower side of the insertion port 16. Thus, it is possible to reliably prevent the string class A 1, A 2 are connected in a state of twisted.

請求項３記載の連結具は、請求項１又は２記載の連結具において、前記付勢部材１１，１２は、前記一対の係合部７，７の前記内側部１０，１０に当接する両腕部１１ｂ，１１ｂを有し、該両腕部１１ｂ，１１ｂを介して前記内側部１０，１０を前記収容部５の外方に向けて付勢する第一の付勢部材１１と、
前記一対の係合部７，７の前記係合爪８，８の間に挿通された前記挿脱体３１の前記係合片３２に当接する部分１２ａを有し、前記係合爪８，８と係合した前記係合片３２を前記収容部５の外方に向けて付勢するとともに、前記一対の係合部７，７の前記外側部（操作部）９，９の前記押動操作によって前記係合爪８，８が互いに離間することで前記係合片３２が外れると該係合片３２を前記当接する部分１２ａが前記収容部５外へと押し出すように移動する第二の付勢部材１２と、からなることを特徴としている。 According to a third aspect of the present invention, there is provided the coupling tool according to the first or second aspect, wherein the urging members 11 and 12 are both arms that come into contact with the inner portions 10 and 10 of the pair of engaging portions 7 and 7. A first urging member 11 that has portions 11b, 11b, and urges the inner portions 10, 10 toward the outside of the accommodating portion 5 via the arms 11b, 11b;
The engaging claws 8, 8 have a portion 12a that abuts against the engaging piece 32 of the insertion / removal body 31 inserted between the engaging claws 8, 8 of the pair of engaging portions 7, 7. The engaging piece 32 engaged with the urging member is urged toward the outside of the housing portion 5 and the pushing operation of the outer portions (operation portions) 9 and 9 of the pair of engaging portions 7 and 7 is performed. When the engaging claws 8 and 8 are separated from each other, the engaging piece 32 is disengaged, so that the portion 12a that abuts the engaging piece 32 moves so as to push out of the accommodating portion 5. And a biasing member 12.

請求項４記載の連結具は、請求項３記載の連結具において、前記第一及び第二の付勢部材１１，１２は共に捩じりコイルばねからなり、前記第二の付勢部材１２における前記挿脱体３１の前記係合片３２に当接する部分が捩じりコイルばねのコイル部分（コイル部）１２ａであることを特徴としている。   According to a fourth aspect of the present invention, there is provided a coupling tool according to the third aspect, wherein each of the first and second biasing members 11 and 12 is a torsion coil spring. A portion of the insertion / removal body 31 that contacts the engagement piece 32 is a coil portion (coil portion) 12a of a torsion coil spring.

請求項５記載の連結具は、請求項４記載の連結具において、前記第一の付勢部材としての捩じりコイルばね１１は、前記一対の係合部７，７の前記内側部１０，１０の間にて、前記両腕部１１ｂ，１１ｂが所定角度を有して延出しているコイル部１１ａが支軸６ｂに挿通されて設けられ、
前記第二の付勢部材としての捩じりコイルばね１２は、前記一対の係合部７，７の前記内側部１０，１０の間にて、前記係合片３２に当接する部分となるコイル部１２ａから略水平に延出している両腕部１２ｂ，１２をそれぞれ固定させた状態で設けられたことを特徴としている。 The connector according to claim 5 is the connector according to claim 4, wherein the torsion coil spring 11 as the first urging member is connected to the inner portions 10, 7 of the pair of engaging portions 7, 7. 10, a coil portion 11a in which both the arm portions 11b and 11b extend at a predetermined angle is provided by being inserted through the support shaft 6b.
The torsion coil spring 12 as the second urging member is a coil that becomes a portion that contacts the engagement piece 32 between the inner portions 10 and 10 of the pair of engagement portions 7 and 7. It is characterized in that both arm portions 12b, 12 extending substantially horizontally from the portion 12a are fixed.

このような構成（請求項３乃至５に記載の構成）によれば、一対の係合部７，７のそれぞれの係合爪８，８を近接させるように付勢する第一の付勢部材１１と、係合爪８，８との係合が外れた係合片３２を押し出すために付勢する第二の付勢部材１２とを別々に備えたことによって、二つの付勢部材１１，１２にはそれぞれの作用に伴う応力だけがかかるようになり、例えば、一本の線材などからなる付勢部材のように常に応力がかかるものに比べて応力が分散する。また、二つの付勢部材１１，１２の全長が短くなる。これらのことから、付勢部材１１，１２の強度が高まり、耐久性が向上するようになる。   According to such a configuration (the configuration described in claims 3 to 5), the first biasing member that biases the engaging claws 8, 8 of the pair of engaging portions 7, 7 to approach each other. 11 and the second urging member 12 for urging to push out the engagement piece 32 disengaged from the engagement claws 8 and 8 are separately provided. Only the stress associated with each action is applied to 12, and for example, the stress is dispersed as compared with the case where the stress is always applied like an urging member made of a single wire or the like. Further, the overall length of the two biasing members 11 and 12 is shortened. For these reasons, the strength of the urging members 11 and 12 is increased, and the durability is improved.

また、二つの付勢部材１１，１２に捩じりコイルばねを採用することによって、扁平形状（薄型）の本体２に好適に組み込むことができる。   Further, by adopting torsion coil springs for the two urging members 11, 12, it can be suitably incorporated in the flat (thin) main body 2.

本発明に係る連結具によれば、本体と挿脱体を連結させるとき、本体の外周面に設けられた樹脂カバーのガイド溝に沿って挿脱体の係合片を移動させれば、係合片を挿通口まで確実且つ容易に到達させることができる。これにより、使用者の連結時の煩わしさを更に軽減することができる。   According to the connector according to the present invention, when the main body and the insertion / removal body are connected, the engagement piece of the insertion / removal body is moved along the guide groove of the resin cover provided on the outer peripheral surface of the main body. The joining piece can be surely and easily reached the insertion port. Thereby, the troublesomeness at the time of a user's connection can further be reduced.

また、本体（挿通口）に対して挿脱体を誤った向きで挿通させると、係合片の凸部が挿通口の下辺を形成する下板の端縁部に当接して係合片が収容部内へと挿通されない。これにより、紐類が捩じれた状態で連結されることを確実に防止することができる。   Further, when the insertion / removal body is inserted in the wrong direction with respect to the main body (insertion port), the convex portion of the engagement piece comes into contact with the edge of the lower plate forming the lower side of the insertion port, and the engagement piece is It is not inserted into the receiving part. Thereby, it can prevent reliably that a string is connected in the state twisted.

本発明に係る連結具の実施の形態における連結前の状態（分離状態）を示す斜視図である。It is a perspective view which shows the state (separation state) before the connection in embodiment of the connection tool which concerns on this invention. 同実施の形態における連結状態を示す斜視図である。It is a perspective view which shows the connection state in the same embodiment. 同実施の形態の本体の分解斜視図である。It is a disassembled perspective view of the main body of the embodiment. （ａ），（ｂ）同実施の形態の収容部内における各部の動作図（平面図）である。(A), (b) It is an operation | movement figure (plan view) of each part in the accommodating part of the embodiment. 同実施の形態を使用者が連結するときの様子を示す図である。It is a figure which shows a mode when a user connects the embodiment. （ａ），（ｂ），（ｃ）図５において、本体に対する挿脱体の動作図（斜視図）である。(A), (b), (c) It is an operation | movement figure (perspective view) of the insertion / removal body with respect to a main body in FIG. 従来の連結具を示す斜視図である。It is a perspective view which shows the conventional connector. （ａ），（ｂ）従来の連結具の収容部内における各部の動作図（平面図）である。(A), (b) It is an operation | movement figure (plan view) of each part in the accommodating part of the conventional connector.

以下、本発明の実施の形態を図面を参照して具体的に説明する。なお、この実施の形態は、図７及び８を参照して説明した従来の連結具１００の構成と大部分が同じものであるため、連結具１００と重複する箇所があるが、これらの重複する箇所には連結具１００において相当する箇所とは別の符号を付して再度詳しく説明する。   Embodiments of the present invention will be specifically described below with reference to the drawings. Since this embodiment is largely the same as the configuration of the conventional connector 100 described with reference to FIGS. 7 and 8, there are portions that overlap with the connector 100, but these overlap. The portions will be described in detail again with reference numerals different from the corresponding portions in the connector 100.

図１乃至３に示すように、この実施の形態（連結具１）は、本体２と、挿脱体３１とから構成されている。なお、この実施の形態では、連結具１は、ヘルメットの顎紐に用いており、図１及び２において、符号Ａ1 は平帯状の紐類であり、ヘルメットの一方の顎紐、符号Ａ2 は同様に平帯状の紐類であり、ヘルメットの他方の顎紐を示している。 As shown in FIGS. 1 to 3, this embodiment (connector 1) includes a main body 2 and an insertion / removal body 31. In this embodiment, the connector 1 is used as a chin strap of a helmet. In FIGS. 1 and 2, reference numeral A 1 is a flat belt-like string, and one chin strap of the helmet, reference numeral A 2. Is similarly a flat belt-like string, and shows the other jaw string of the helmet.

本体２は、扁平形状であり、その上面を形成する上板３とその下面を形成する下板４の間に収容部５となる空間を形成している。図３に示すように、収容部５内には、支軸６ａを中心として揺動可能に支持された一対の係合部７，７を有している。支軸６ａ，６ａは、この実施の形態では上板３と下板４を一体化するためのリベットなどの固定部材６からなり、上板３と下板４の各固定孔３ａ，４ａに挿通される間に、係合部７，７の軸孔７ａ，７ａに僅かな間隙を有して挿通される。係合部７には、支軸６ａを介した一方の揺動端の先端部に鉤状の係合爪８が設けられている。一対の係合部７，７の各係合爪８，８は対向している。また、係合部７の支軸６ａを介した他方の揺動端側の外側部９は収容部５外に延出しており、この延出した外側部９が本体２の操作部となる。さらに、外側部（操作部）９とは反対側に位置する内側部１０は、収容部５内にて他方の係合部７の内側部１０と対向している。   The main body 2 has a flat shape, and a space serving as a housing portion 5 is formed between an upper plate 3 that forms an upper surface thereof and a lower plate 4 that forms a lower surface thereof. As shown in FIG. 3, the accommodating portion 5 has a pair of engaging portions 7 and 7 supported so as to be swingable about a support shaft 6 a. In this embodiment, the support shafts 6a and 6a are formed of a fixing member 6 such as a rivet for integrating the upper plate 3 and the lower plate 4, and are inserted into the fixing holes 3a and 4a of the upper plate 3 and the lower plate 4, respectively. In the meantime, the shaft holes 7a, 7a of the engaging portions 7, 7 are inserted with a slight gap. The engaging portion 7 is provided with a hook-like engaging claw 8 at the tip of one swing end via the support shaft 6a. The engaging claws 8, 8 of the pair of engaging portions 7, 7 face each other. Further, the outer portion 9 on the other swing end side via the support shaft 6 a of the engaging portion 7 extends outside the accommodating portion 5, and this extended outer portion 9 becomes an operation portion of the main body 2. Furthermore, the inner part 10 located on the side opposite to the outer part (operation part) 9 faces the inner part 10 of the other engaging part 7 in the accommodating part 5.

収容部５内において、一対の係合部７，７の対向する内側部１０，１０の間には第一の付勢部材１１が設けられている。第一の付勢部材１１は捩じりコイルばねからなり、コイル部１１ａが支軸６ｂ（固定部材６）に挿通されて、コイル部１１ａから所定角度を有してＶ字状に延出している両腕部１１ｂ，１１ｂを一対の係合部７，７の各内側部１０，１０に当接させている。捩じりコイルばね１１は、両腕部１１ｂ，１１ｂを介して各内側部１０，１０を収容部５の外方に向けて常に付勢している。つまり、捩じりコイルばね１１は、各内側部１０，１０を離間するように付勢しており、これにより、一対の係合部７，７の各係合爪８，８が互いに近接するように付勢されるようになる。   In the accommodating part 5, the 1st biasing member 11 is provided between the inner parts 10 and 10 which a pair of engaging parts 7 and 7 oppose. The first urging member 11 is composed of a torsion coil spring, and the coil portion 11a is inserted through the support shaft 6b (fixing member 6) and extends from the coil portion 11a into a V shape with a predetermined angle. Both arm portions 11b, 11b are in contact with the inner portions 10, 10 of the pair of engaging portions 7, 7. The torsion coil spring 11 always urges the inner portions 10 and 10 toward the outside of the housing portion 5 via both arm portions 11b and 11b. That is, the torsion coil spring 11 is biased so as to separate the inner portions 10 and 10, whereby the engaging claws 8 and 8 of the pair of engaging portions 7 and 7 are close to each other. Will be energized.

収容部５内において、一対の係合部７，７の対向する内側部１０，１０の間には、第二の付勢部材１２が設けられている。第二の付勢部材１２は、上述した第一の付勢部材１１と同様に捩じりコイルばねからなる。第二の付勢部材としての捩じりコイルばね１２は、コイル部１２ａから略水平に延出している両腕部１２ｂ，１２ｂを一対の係合部７，７の内側面と下板４に設けられた凸片４ｃの間に介在させることでこの両腕部１２ｂ，１２ｂは固定されている。   In the accommodating part 5, the 2nd biasing member 12 is provided between the inner parts 10 and 10 which a pair of engaging parts 7 and 7 oppose. The second urging member 12 is formed of a torsion coil spring in the same manner as the first urging member 11 described above. The torsion coil spring 12 as the second urging member has both arm portions 12b, 12b extending substantially horizontally from the coil portion 12a on the inner surface of the pair of engaging portions 7, 7 and the lower plate 4. The arms 12b and 12b are fixed by being interposed between the provided convex pieces 4c.

なお、第一及び第二の付勢部材としての二つの捩じりコイルばね１１，１２の線材の径などを調整することで、後述する挿脱体３１の係合片３２を収容部５内から押し出すために必要な押出力を適切に得ることができる。   In addition, by adjusting the diameters of the wire rods of the two torsion coil springs 11 and 12 as the first and second urging members, an engagement piece 32 of the insertion / removal body 31 to be described later is accommodated in the housing portion 5. It is possible to appropriately obtain the pushing force necessary for extruding from the sheet.

上板３と下板４には、係合部７の他方の揺動端側に一方の顎紐Ａ1 が取り付けられる環状の取付部１４が設けられている。取付部１４は、その半部が収容部５内に位置しており、二つの支軸６ｃ，６ｃ（固定部材６）が上板３と下板４の各固定孔３ａ，４ａに挿通される間に、固定孔１４ａに挿通されることで固定されている。 The upper plate 3 and the lower plate 4 are provided with an annular attachment portion 14 to which one chin strap A 1 is attached on the other swing end side of the engagement portion 7. A half of the mounting portion 14 is located in the housing portion 5, and the two support shafts 6 c and 6 c (fixing member 6) are inserted into the fixing holes 3 a and 4 a of the upper plate 3 and the lower plate 4. In between, it is fixed by being inserted into the fixing hole 14a.

取付部１４の収容部５内に位置する部分の両端部には、捩じりコイルばね１１によって押し広げられた係合部７の他方の揺動端側に形成されている当接部１３に当接して、その揺動範囲を規制する規制部１５が設けられている。   At both ends of the portion of the mounting portion 14 located in the accommodating portion 5, there are contact portions 13 formed on the other swing end side of the engaging portion 7 that is pushed and spread by the torsion coil spring 11. A restricting portion 15 that abuts and restricts the swing range is provided.

さらに、上板３と下板４には、係合部７の一方の揺動端側、すなわち、上述した取付部１４とは反対側の端面に、挿脱体３１の係合片３２を収容部５内へと挿通させるための挿通口１６が設けられている。挿通口１６において、上板３と下板４のうちの下板４の端縁部４ｂは、挿脱体３１の挿脱方向Ｘに延出して形成されており、この延出した端縁部４ｂは、本体２と挿脱体３１とを連結するときに挿脱体３１の係合片３２を挿通口１６までガイドするためのガイド部１７となる。   Further, the upper plate 3 and the lower plate 4 accommodate the engaging piece 32 of the insertion / removal member 31 on one swinging end side of the engaging portion 7, that is, on the end surface opposite to the mounting portion 14 described above. An insertion port 16 for allowing insertion into the portion 5 is provided. In the insertion port 16, the edge 4 b of the lower plate 4 of the upper plate 3 and the lower plate 4 is formed to extend in the insertion / removal direction X of the insertion / removal body 31, and this extended edge 4 b serves as a guide portion 17 for guiding the engaging piece 32 of the insertion / removal body 31 to the insertion port 16 when the main body 2 and the insertion / removal body 31 are connected.

また、上板３は、その端縁部３ｂが挿通口１６の上辺を形成しており、下板４は、その端縁部４ｂが挿通口１６の下辺を形成している。そして、挿通口１６の上辺、すなわち、上板３の端縁部３ｂには略Ｖ字形の切欠き１８が設けられている。   Further, the upper plate 3 has an end edge 3 b forming the upper side of the insertion port 16, and the lower plate 4 has an end edge 4 b forming the lower side of the insertion port 16. A substantially V-shaped notch 18 is provided on the upper side of the insertion port 16, that is, on the edge 3 b of the upper plate 3.

図１及び２に示すように、本体２の外周面には、軟質の合成樹脂からなるカバー２１が、インジェクション成形などによって、この本体２（取付部１４を除く）を覆うように設けられている。この実施の形態では、樹脂カバー２１の素材には軟質の合成樹脂を用いているが、硬質の合成樹脂を用いてもよい。樹脂カバー２１は、その一つの面には挿通口１６を出現させるために挿通口１６と略同形の開口２２を有し、また、両側面には一対の係合部７，７の各外側部９，９を出現させるためにこれらの外側部９，９を通過させる開口２３，２３を有している。なお、樹脂カバー２１の開口２２からは下板４の端縁部４ｂ（ガイド部１７）が外部に延出している。   As shown in FIGS. 1 and 2, a cover 21 made of a soft synthetic resin is provided on the outer peripheral surface of the main body 2 so as to cover the main body 2 (excluding the attachment portion 14) by injection molding or the like. . In this embodiment, a soft synthetic resin is used as the material of the resin cover 21, but a hard synthetic resin may be used. The resin cover 21 has an opening 22 that is substantially the same shape as the insertion port 16 in order to allow the insertion port 16 to appear on one surface, and the outer side portions of the pair of engaging portions 7 and 7 on both side surfaces. In order to make 9, 9 appear, it has openings 23, 23 through which these outer portions 9, 9 pass. Note that the edge portion 4b (guide portion 17) of the lower plate 4 extends from the opening 22 of the resin cover 21 to the outside.

樹脂カバー２１の各面のうち、本体２の上板３側の面、すなわち、上板３を被覆している面には略中央に挿脱体３１の挿脱方向Ｘに沿って形成された溝２４が設けられている。後述するが、この溝２４は挿脱体３１の係合片３２をガイドするためのガイド溝となる。また、ガイド溝２４は、挿通口１６近傍において、挿通口１６に近づくにつれて拡径する端縁部となり、この端縁部は上板３の端縁部３ｂに設けられた切欠き１８と略同形状の切欠き２５となる。   Of the surfaces of the resin cover 21, the surface on the upper plate 3 side of the main body 2, that is, the surface covering the upper plate 3, is formed substantially in the center along the insertion / removal direction X of the insertion / removal body 31. A groove 24 is provided. As will be described later, the groove 24 serves as a guide groove for guiding the engaging piece 32 of the insertion / removal member 31. Further, the guide groove 24 becomes an end edge portion that increases in diameter near the insertion port 16 in the vicinity of the insertion port 16, and this end edge portion is substantially the same as the notch 18 provided in the edge portion 3 b of the upper plate 3. A cutout 25 is formed.

前述した挿脱体３１は、扁平形状であり、その一方の端部に係合片３２を有している。係合片３２は、上述した本体２の収容部５内に挿通されて、一対の係合部７，７の各係合爪８，８の間に係合するように両側部が鉤状に突出した略矢印形に形成されている。係合片３２の先端部３３は、捩じりコイルばね１２のコイル部１２ａに当接するとともに、当接したときにコイル部１２ａの外形に適合するような湾曲凹状に形成されている。   The aforementioned insertion / removal body 31 has a flat shape and has an engagement piece 32 at one end thereof. The engaging piece 32 is inserted into the housing portion 5 of the main body 2 described above, and both side portions are hooked so as to engage between the engaging claws 8 and 8 of the pair of engaging portions 7 and 7. It is formed in a protruding substantially arrow shape. The distal end portion 33 of the engagement piece 32 is in contact with the coil portion 12a of the torsion coil spring 12, and is formed in a curved concave shape so as to match the outer shape of the coil portion 12a when contacted.

また、挿脱体３１には、係合片３２近傍において、挿脱方向Ｘの先端部３３とは反対側に略矩形の凸部３４が設けられている。図２に示すように、凸部３４は、本体２と挿脱体３１を連結させたときに、本体２の上板３の端縁部３ｂ及び樹脂カバー２１の上板３側の面の端縁部に設けられた共通の切欠き１８，２５内に位置するようになる。   Further, the insertion / removal body 31 is provided with a substantially rectangular convex portion 34 in the vicinity of the engagement piece 32 on the side opposite to the distal end portion 33 in the insertion / removal direction X. As shown in FIG. 2, when the main body 2 and the insertion / removal body 31 are connected to each other, the convex portion 34 has an end edge 3 b of the upper plate 3 of the main body 2 and an end of the surface on the upper plate 3 side of the resin cover 21. It will be located in the common notches 18 and 25 provided in the edge.

さらに、挿脱体３１の他方の端部には、他方の顎紐Ａ2 が取り付けられる環状の取付部３５が設けられている。また、取付部３５には、他方の顎紐Ａ２の端部をかけ回して長さ調整可能にする係止部材３６が取り付けられている。 Furthermore, an annular attachment portion 35 to which the other chin strap A 2 is attached is provided at the other end portion of the insertion / removal body 31. In addition, a locking member 36 is attached to the mounting portion 35 so that the length of the other chin strap A2 can be adjusted by turning around the end portion of the other chin strap A2.

ここで、図４を参照して上述した連結具１における各部の動作を説明する。なお、図４は、上板３を外した状態である。   Here, with reference to FIG. 4, operation | movement of each part in the coupling tool 1 mentioned above is demonstrated. FIG. 4 shows a state where the upper plate 3 is removed.

図４（ａ）に示すように、本体２と挿脱体３１が連結するときは、挿脱体３１の係合片３２を本体２の挿通口１６（図１及び２参照）から収容部５内へと挿通させると、係合片３２が対向する係合爪８，８を押し広げるようにして各係合爪８，８の間に挿通され、係合片３２と各係合爪８，８とが係合する。各係合爪８，８は、第一の付勢部材としての捩じりコイルばね１１によって互いに近接するように付勢されているため、係合片３２と各係合爪８，８との係合が勝手に外れることはない。これにより、本体２と挿脱体３１は略一体的に連結され、一方の顎紐Ａ1 と他方の顎紐Ａ2 （図１及び２参照）が連結される。このとき、収容部５内に挿通された係合片３２は、その先端部３３が第二の付勢部材としての捩じりコイルばね１２のコイル部１２ａに当接し、コイル部１２ａを更に押し込むため、収容部５の外方に向けて付勢されている。 As shown in FIG. 4A, when the main body 2 and the insertion / removal body 31 are connected, the engaging piece 32 of the insertion / removal body 31 is moved from the insertion port 16 (see FIGS. 1 and 2) of the main body 2 to the accommodating portion 5. When inserted into the engaging claw 8, the engaging piece 32 is inserted between the engaging claws 8 and 8 so as to spread the opposing engaging claws 8 and 8, and the engaging piece 32 and the engaging claws 8 and 8 are inserted. 8 engages. Since each engagement claw 8 and 8 is urged so as to be close to each other by a torsion coil spring 11 as a first urging member, the engagement piece 32 and each engagement claw 8 and 8 are Engagement never happens. Thereby, the main body 2 and the insertion / removal body 31 are connected substantially integrally, and one chin strap A 1 and the other chin strap A 2 (see FIGS. 1 and 2) are connected. At this time, the engaging piece 32 inserted into the accommodating portion 5 has its distal end portion 33 in contact with the coil portion 12a of the torsion coil spring 12 as the second urging member, and further presses the coil portion 12a. Therefore, it is urged toward the outside of the housing part 5.

なお、捩じりコイルばね１１は、その両腕部１１ｂ，１１ｂを各係合爪８，８の内側面１０，１０に当接させて、これを収容部５の外方に向けて押し広げることで、各支軸６ａ，６ａを介して各係合爪８，８が近接するように付勢する。また、捩じりコイルばね１２は、その両腕部１２ｂ，１２ｂが下板４の凸片４ｃに当接することにより、コイル部１２ａが係合片３２の先端部３３に押されると、係合片８を収容部５の外方に向けて付勢する。   The torsion coil spring 11 abuts both arm portions 11b and 11b against the inner side surfaces 10 and 10 of the engaging claws 8 and 8 and pushes it outward toward the housing portion 5. Thus, the respective engaging claws 8 and 8 are biased so as to be close to each other via the respective support shafts 6a and 6a. Further, the torsion coil spring 12 is engaged when both the arm portions 12b and 12b abut against the convex piece 4c of the lower plate 4 so that the coil portion 12a is pushed by the distal end portion 33 of the engagement piece 32. The piece 8 is urged toward the outside of the housing portion 5.

図４（ｂ）に示すように、連結された本体２と挿脱体３１が分離するときは、一対の係合部７，７の各外側部（操作部）９，９を収容部５の内方に向けて押動操作すると、捩じりコイルばね１１の付勢力に抗して各係合爪８，８が離間し、各係合爪８，８と係合片３２の係合が解除される。これと同時に、それまで係合片３２の先端部３３に押されていた捩じりコイルばね１２のコイル部１２ａが、捩じりコイルばね１２の付勢力によって、各係合爪８，８との係合が外れた係合片３２を押し出すように移動する。これにより、係合片３２が収容部５外に押し出されて本体２から挿脱体３１が外れる。   As shown in FIG. 4B, when the connected main body 2 and the insertion / removal body 31 are separated, the outer portions (operation portions) 9 and 9 of the pair of engagement portions 7 and 7 are connected to the housing portion 5. When the pushing operation is performed inward, the engaging claws 8 and 8 are separated from each other against the urging force of the torsion coil spring 11, and the engaging claws 8 and 8 are engaged with the engaging pieces 32. Canceled. At the same time, the coil portion 12a of the torsion coil spring 12 that has been pushed by the tip end portion 33 of the engagement piece 32 until then is engaged with each of the engagement claws 8, 8 by the urging force of the torsion coil spring 12. The engagement piece 32 that has been disengaged is moved so as to be pushed out. As a result, the engagement piece 32 is pushed out of the housing portion 5 and the insertion / removal body 31 is detached from the main body 2.

また、図５には使用者がヘルメットをかぶった状態で連結具１の本体２と挿脱体３１を連結させるところを示している。図５に示すように、ヘルメットの一方の顎紐Ａ1 に取り付けられた本体２と他方の顎紐Ａ2 に取り付けられた挿脱体３１を連結させるときは、本体２の外周面に設けられた樹脂カバー２１のガイド溝２４に沿って挿脱体３１の係合片３２を挿通口１６に向けて移動させることで係合片３２を挿通口１６まで到達させることができる。 FIG. 5 shows that the user connects the main body 2 of the connector 1 and the insertion / removal body 31 with the helmet on. As shown in FIG. 5, when connecting the main body 2 attached to one chin strap A 1 of the helmet and the insertion / removal body 31 attached to the other chin strap A 2 , it is provided on the outer peripheral surface of the main body 2. The engaging piece 32 can reach the insertion port 16 by moving the engagement piece 32 of the insertion / removal member 31 toward the insertion port 16 along the guide groove 24 of the resin cover 21.

さらに、挿通口１６まで到達させるときの挿脱体３１の係合片３２の動作を図６を参照して更に詳しく説明する。なお、樹脂カバー２１の面のうち、本体２の上板３側の面にガイド溝２４が設けられているが、ヘルメットの一方の顎紐Ａ1 に取り付けられる本体２は、ガイド溝２４が設けられた面が表にあらわれるように取り付けられている。また、ヘルメットの他方の顎紐Ａ2 に取り付けられる挿脱体３１は、凸部３４が表にあらわれるように取り付けられている。 Further, the operation of the engagement piece 32 of the insertion / removal body 31 when reaching the insertion port 16 will be described in more detail with reference to FIG. The guide groove 24 is provided on the surface of the resin cover 21 on the upper plate 3 side of the main body 2, but the main body 2 attached to one chin strap A 1 of the helmet has the guide groove 24. It is attached so that the marked surface appears on the front. The insertion / removal body 31 attached to the other chin strap A 2 of the helmet is attached so that the convex portion 34 appears on the front.

使用者は、まず、挿脱体３１の係合片３２を樹脂カバー２１の表面の任意の位置に当接させる。係合片３２を、当接させた状態のままで樹脂カバー２１の表面上を摺動させると、図６（ａ）に示すように、その先端部３３がガイド溝２４に入り込む。図６（ｂ）に示すように、先端部３３がガイド溝２４に入り込んだ係合片３２は、ガイド溝２４に沿った移動以外の樹脂カバー２１の表面上における移動が規制されるため、ガイド溝２４に沿って移動させれば、挿通口１６に到達する。挿通口１６に到達すると、図６（ｃ）に示すように、係合片３２の先端部３３を、収納部５内への挿通をガイドするガイド部１７となる下板４の端縁部４ｂに当接させ、当接させた状態でガイド部１７に沿って挿通口１６から収納部５内へと挿通することで、本体２と挿脱体３１を連結する。   The user first brings the engaging piece 32 of the insertion / removal body 31 into contact with an arbitrary position on the surface of the resin cover 21. When the engagement piece 32 is slid on the surface of the resin cover 21 in a contacted state, the distal end portion 33 enters the guide groove 24 as shown in FIG. As shown in FIG. 6B, the engagement piece 32 with the tip 33 entering the guide groove 24 is restricted from moving on the surface of the resin cover 21 other than the movement along the guide groove 24. If it is moved along the groove 24, it reaches the insertion port 16. When reaching the insertion port 16, as shown in FIG. 6C, the edge portion 4 b of the lower plate 4 that serves as the guide portion 17 that guides the distal end portion 33 of the engagement piece 32 into the storage portion 5. The main body 2 and the insertion / removal body 31 are connected by being inserted into the storage portion 5 from the insertion port 16 along the guide portion 17 in the contacted state.

このとき、扁平な挿脱体３１が誤った向きで挿通口１６から収納部５内に挿通されようとしたときは、挿脱体３１に設けられた凸部３４がガイド部１７に当たり、挿脱体３１は収容部５内に挿通されない。   At this time, when the flat insertion / removal body 31 is about to be inserted into the storage portion 5 from the insertion port 16 in the wrong direction, the convex portion 34 provided on the insertion / removal body 31 hits the guide portion 17 and is inserted / removed. The body 31 is not inserted into the housing portion 5.

上述した実施の形態によれば、本体２と挿脱体３１を連結させるとき、本体２の外周面に設けられた樹脂カバー２１のガイド溝２４に沿って挿脱体３１の係合片３２を移動させれば、係合片３２を挿通口１６まで確実且つ容易に到達させることができる。これにより、使用者の連結時の煩わしさを更に軽減することができる。また、本体２が扁平形状であるため、ヘルメットの一方の顎紐Ａ1 と他方の顎紐Ａ2 を連結するために用いることに適した薄型の連結具となる。さらに、挿通口１６において、ガイド部１７が係合片３２を挿通口１６までガイドするようになる。また、本体２と挿脱体３１を分離させるときは、使用者は片手による一操作で確実に分離させることができる。 According to the above-described embodiment, when connecting the main body 2 and the insertion / removal body 31, the engagement piece 32 of the insertion / removal body 31 is moved along the guide groove 24 of the resin cover 21 provided on the outer peripheral surface of the main body 2. If moved, the engagement piece 32 can be reliably and easily reached the insertion port 16. Thereby, the troublesomeness at the time of a user's connection can further be reduced. Moreover, since the main body 2 has a flat shape, it becomes a thin connector suitable for use in connecting one chin strap A 1 and the other chin strap A 2 of the helmet. Further, at the insertion port 16, the guide portion 17 guides the engagement piece 32 to the insertion port 16. Moreover, when separating the main body 2 and the insertion / removal body 31, the user can reliably separate by one operation with one hand.

また、本体２（挿通口１６）に対して挿脱体３１を誤った向きで挿通させても、凸部３４がガイド部１７に妨げられて係合片３２は収容部５内に挿通されない。これにより、一方の顎紐Ａ1 と他方の顎紐が紐類Ａ2 が捩じれた状態で連結されることを確実に防止することができる。 Further, even if the insertion / removal body 31 is inserted in the wrong direction with respect to the main body 2 (insertion port 16), the convex portion 34 is obstructed by the guide portion 17 and the engagement piece 32 is not inserted into the housing portion 5. Thus, it is possible to reliably prevent the one chin strap A 1 and the other chin strap is connected in a state where the cord such A 2 twisted.

さらに、一対の係合部７，７のそれぞれの係合爪８，８を近接させるように付勢する捩じりコイルばね１１と、係合爪８，８との係合が外れた係合片３２を押し出すために付勢する捩じりコイルばね１２とを別々に備えたことによって、二つの捩じりコイルばね１１，１２にはそれぞれの作用に伴う応力だけがかかるようになり、例えば、一本の線材などからなる付勢部材のように常に応力がかかるものに比べて応力が分散する。また、二つの捩じりコイルばね１１，１２はそれぞれ全長が短くなる。これらのことから、捩じりコイルばね１１，１２の強度が高まり、耐久性が向上するようになる。   Further, the engagement between the engagement claws 8 and 8 is disengaged from the torsion coil spring 11 that urges the engagement claws 8 and 8 of the pair of engagement portions 7 and 7 to approach each other. By separately providing the torsion coil spring 12 that urges the piece 32 to push out, only the stress associated with each action is applied to the two torsion coil springs 11 and 12, for example, The stress is dispersed as compared with a member that is constantly stressed, such as a biasing member made of a single wire. Further, the total length of the two torsion coil springs 11 and 12 is shortened. For these reasons, the strength of the torsion coil springs 11 and 12 is increased, and the durability is improved.

１…連結具、２…本体、３…上板、３ａ…固定孔、３ｂ…端縁部、４…下板、４ａ…固定孔、４ｂ…端縁部、４ｃ…凸片、５…収容部、６ａ，６ｂ，６ｃ…支軸、７…係合部、８…係合爪、９…操作部となる外側部、１０…内側部、１１…第一の付勢部材としての捩じりコイルばね、１１ａ…コイル部、１１ｂ…両腕部、１２…第二の付勢部材としての捩じりコイルばね、１２ａ…係合片に当接する部分となるコイル部、１２ｂ…両腕部、１３…当接部、１４…取付部、１４ａ…固定孔、１５…規制部、１６…挿通口、１７…ガイド部、１８…切欠き、２１…カバー（樹脂カバー）、２２，２３…開口、２４…ガイド溝、２５…切欠き、３１…挿脱体、３２…係合片、３３…先端部、３４…凸部、３５…取付部、Ａ1 …紐類（ヘルメットの一方の顎紐）、Ａ2 …紐類（ヘルメットの他方の顎紐）、Ｘ…挿脱方向 DESCRIPTION OF SYMBOLS 1 ... Connector, 2 ... Main body, 3 ... Upper plate, 3a ... Fixing hole, 3b ... End edge part, 4 ... Lower plate, 4a ... Fixing hole, 4b ... End edge part, 4c ... Convex piece, 5 ... Accommodating part , 6a, 6b, 6c ... support shaft, 7 ... engagement part, 8 ... engagement claw, 9 ... outer part serving as operation part, 10 ... inner part, 11 ... torsion coil as first biasing member Spring, 11a ... Coil part, 11b ... Both arm parts, 12 ... Torsion coil spring as a second urging member, 12a ... Coil part to be in contact with the engagement piece, 12b ... Both arm parts, 13 Abutment part, 14 ... mounting part, 14a ... fixing hole, 15 ... regulating part, 16 ... insertion port, 17 ... guide part, 18 ... notch, 21 ... cover (resin cover), 22, 23 ... opening, 24 ... guide groove, 25 ... notch, 31 ... insertion and removal member, 32 ... engaging pieces, 33 ... tip portion, 34 ... protruding portion, 35 ... attachment portion, a 1 ... cord such (helmet one Chin strap), A 2 ... string class (the other of the chin strap of the helmet), X ... insertion and removal direction of

Claims (5)

収容部（５）内において、先端部に設けられた係合爪（８）が対向するとともに前記収容部外に外側部（９）が延出する一対の係合部（７）を前記係合爪が接離可能となるように揺動支持し、
前記外側部を前記収容部の内方へと押動操作して前記係合爪を互いに離間させることを可能にする本体（２）と、
前記収容部への挿通口（１６）から前記一対の係合部の前記係合爪の間に挿通されて該係合爪と係合する係合片（３２）を有し、該係合片が前記係合爪と係合することで前記本体と略一体的に連結する挿脱体（３１）と、
前記収容部内において、前記一対の係合部のそれぞれの内側部（１０）を前記収容部の外方に向けて付勢するとともに、前記係合爪と係合した前記係合片を前記収容部の外方に向けて付勢する機能と、前記一対の係合部の前記外側部の前記押動操作によって前記係合爪が互いに離間することで前記係合片との係合が解除されると該係合片を前記収容部外へと押し出す機能を有する付勢部材（１１，１２）と、
前記本体を覆うように該本体の外周面に設けられ、前記挿通口と前記一対の係合部の前記外側部を出現させる開口（２２，２３）を有する、合成樹脂からなるカバー（２１）と、を備えた連結具（１）において、
前記本体は、扁平形状であり、
前記挿通口において、前記本体の上面を形成するとともにその端縁部（３ｂ）が前記挿通口の上辺を形成する上板（３）よりも前記本体の下面を形成するとともにその端縁部（４ｂ）が前記挿通口の下辺を形成する下板（４）が前記挿脱体の挿脱方向（Ｘ）に延出して設けられ、
前記カバーには、前記上板側の面に前記挿通口へと通じるガイド溝（２４）が設けられたことを特徴とする連結具。 In the accommodating part (5), the engaging claw (8) provided at the tip part opposes and a pair of engaging parts (7) whose outer part (9) extends outside the accommodating part are engaged. Swing and support so that the nail can be contacted and separated,
A main body (2) that allows the engaging claws to be separated from each other by pushing the outer portion inward of the housing portion;
An engagement piece (32) that is inserted between the engagement claws of the pair of engagement portions from the insertion opening (16) to the housing portion and engages with the engagement claws; An insertion / removal body (31) that is substantially integrally connected to the main body by engaging with the engagement claw;
In the housing portion, the inner portions (10) of the pair of engaging portions are urged toward the outside of the housing portion, and the engaging pieces engaged with the engaging claws are moved to the housing portion. The engagement with the engagement piece is released when the engagement claws are separated from each other by the function of urging outwardly and the pushing operation of the outer portions of the pair of engagement portions. And an urging member (11, 12) having a function of pushing out the engaging piece to the outside of the housing portion,
A synthetic resin cover (21) provided on the outer peripheral surface of the main body so as to cover the main body, and having openings (22, 23) for allowing the insertion port and the outer portions of the pair of engaging portions to appear; In a connector (1) comprising
The main body has a flat shape,
In the insertion port, the upper surface of the main body is formed and the end edge (3b) forms the lower surface of the main body rather than the upper plate (3) forming the upper side of the insertion port and the edge (4b) ) Is provided to extend in the insertion / removal direction (X) of the insertion / removal body, and a lower plate (4) forming the lower side of the insertion opening,
The connector, wherein the cover is provided with a guide groove (24) leading to the insertion port on the surface on the upper plate side. 前記本体の前記上板の端縁部及び前記カバーの前記上板側の面の端縁部には共に共通の切欠き（１８，２５）が設けられ、
前記挿脱体には、前記係合片の近傍に該係合片が前記一対の係合部の前記係合爪と係合したときはその少なくとも一部が前記切欠き内に位置する凸部（３４）が設けられたことを特徴とする請求項１記載の連結具。 Both the edge of the upper plate of the main body and the edge of the surface on the upper plate side of the cover are provided with common notches (18, 25),
In the insertion / removal body, when the engagement piece engages with the engagement claw of the pair of engagement portions, at least a part thereof is located in the notch in the vicinity of the engagement piece. The connector according to claim 1, wherein (34) is provided. 前記付勢部材は、前記一対の係合部の前記内側部に当接する両腕部（１１ｂ）を有し、該両腕部を介して前記内側部を前記収容部の外方に向けて付勢する第一の付勢部材と、
前記一対の係合部の前記係合爪の間に挿通された前記挿脱体の前記係合片に当接する部分（１２ａ）を有し、前記係合爪と係合した前記係合片を前記収容部の外方に向けて付勢するとともに、前記一対の係合部の前記外側部の前記押動操作によって前記係合爪が互いに離間することで前記係合片が外れると該係合片を前記当接する部分が前記収容部外へと押し出すように移動する第二の付勢部材と、からなることを特徴とする請求項１又は２記載の連結具。 The urging member has both arm portions (11b) that abut against the inner portions of the pair of engaging portions, and the inner portion is attached to the outside of the housing portion via the both arm portions. A first biasing member
The engagement piece engaged with the engagement claw has a portion (12a) that abuts on the engagement piece of the insertion / removal body inserted between the engagement claws of the pair of engagement portions. When the engaging pieces are separated by urging the outer sides of the pair of engaging portions and the engaging claws are separated from each other by the pushing operation of the outer portions of the pair of engaging portions, the engaging pieces are engaged. The coupling tool according to claim 1, further comprising: a second urging member that moves so that the abutting portion pushes the piece out of the housing portion. 前記第一及び第二の付勢部材は共に捩じりコイルばねからなり、前記第二の付勢部材における前記挿脱体の前記係合片に当接する部分が捩じりコイルばねのコイル部分（１２ａ）であることを特徴とする請求項３記載の連結具。   The first and second urging members are both torsion coil springs, and the portion of the second urging member that contacts the engagement piece of the insertion / removal member is the coil portion of the torsion coil spring. The connector according to claim 3, wherein the connector is (12a). 前記第一の付勢部材としての捩じりコイルばねは、前記一対の係合部の前記内側部の間にて、前記両腕部が所定角度を有して延出しているコイル部（１１ａ）が支軸（６ｂ）に挿通されて設けられ、
前記第二の付勢部材としての捩じりコイルばねは、前記一対の係合部の前記内側部の間にて、前記係合片に当接する部分となるコイル部から略水平に延出している両腕部（１２ｂ）をそれぞれ固定させた状態で設けられたことを特徴とする請求項４記載の連結具。 The torsion coil spring as the first urging member includes a coil portion (11a) in which the both arm portions extend at a predetermined angle between the inner portions of the pair of engaging portions. ) Is inserted through the support shaft (6b),
The torsion coil spring as the second urging member extends substantially horizontally from the coil portion that is a portion that contacts the engagement piece between the inner portions of the pair of engagement portions. The coupling tool according to claim 4, wherein both arms (12b) are fixed in a fixed state.
JP2012032943A 2012-02-17 2012-02-17 Helmet chin strap connector Active JP5784524B2 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011000317A (en) * 2009-06-19 2011-01-06 Morito Co Ltd Connector

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011000317A (en) * 2009-06-19 2011-01-06 Morito Co Ltd Connector

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