JP6011932B2

JP6011932B2 - Locking tool

Info

Publication number: JP6011932B2
Application number: JP2012249693A
Authority: JP
Inventors: 佐藤　昭; 昭佐藤
Original assignee: 株式会社サトーゴーセー
Priority date: 2012-10-29
Filing date: 2012-10-29
Publication date: 2016-10-25
Anticipated expiration: 2032-10-29
Also published as: JP2014088952A

Description

本発明は、電線や配管チューブ等の被位置決め物を束ね、あるいは二つの物体を連結する等に使用するバンド状の係止具に関し、詳しくはバンドと係脱する爪の支持機構に関する。 The present invention relates to a band-shaped locking tool used to bundle objects to be positioned such as electric wires and piping tubes, or to connect two objects, and more particularly to a claw support mechanism that engages with and disengages from a band.

各種配線や配管若しくは複数の物品を連結するために使用するバンド状の係止具は、頭部とこの頭部から延設したバンド部と、この頭部に前記バンド部を一方向に係脱する爪を配置した合成樹脂製の係止具から成り、大量に使用されることからその多くは射出成形により生産されている。
上記係止具を使用する顧客からは、バンドをループ状にしたときの強度があること、バンドをループ状にする際バンドを頭部に差し込むがその差込力が作業性の観点から小さいこと及びバンドの長さが多種類用意すること等多くの要求がある。
それら要求事項の内バンドの長さを多種類用意すべしとした顧客要求事項に対し、これまではバンドを射出成形する金型を多数用意して顧客要求に対応してきた。
しかし近年では、射出成形による金型では、射出成形機のダイプレートの大きさの制限や金型の大きさの制限により対応しきれないほどの長尺のバンドを要求する顧客が多くなってきたため、バンド部分と頭部を別々に成形して使用時あるいは使用前にあらかじめ頭部とバンド部分の一部を連結させて使用する、通称ヘッド分離型といわれているタイプの係止具が市場に出回るようになってきた。
この種のヘッド分離型の係止具は、頭部を射出成形により、またバンド部分を押出成形により長尺に成形する手法をとるのが一般的である。
本件に関する事業者等は、上記ヘッド分離型の係止具に関しそれぞれ次の「先行技術文献」に示すような提案を行っている。A band-shaped locking tool used for connecting various wirings, pipes or a plurality of articles includes a head part, a band part extending from the head part, and the band part to and from the head part in one direction. Since it is used in large quantities, many of them are produced by injection molding.
From customers who use the above fasteners, there is strength when the band is made into a loop shape, and when the band is made into a loop shape, the band is inserted into the head, but the insertion force is small from the viewpoint of workability In addition, there are many demands such as preparing various kinds of band lengths.
In response to customer requirements for which various types of inner band lengths should be prepared, a large number of molds for injection molding of bands have been prepared so far.
However, in recent years, with molds made by injection molding, there are many customers who require long bands that cannot be handled due to restrictions on the size of the die plate of the injection molding machine and the size of the mold. In the market, there is a so-called head-separated type locking device that uses a part of the head and the band part that is formed separately before use or before use. It has come to circulate.
In general, this type of head-separated type locking tool employs a technique in which the head is formed into a long shape by injection molding and the band portion is formed by extrusion.
The business operators and the like concerning this case have made proposals as shown in the following "prior art documents" for the above-mentioned head-separated locking device.

特開２００２−１９５２１９JP 2002-195219 A 特開２０１１−１８９９６７JP2011-189967

「特許文献１」には、締結バンド（バンド部）を締付け回数が１回だけで済み、２度締めしなくても締付不足を生じることのない締結具（係止具）を提供することを目的とし、締結バンド（バンド部）が挿通されるバンド挿通孔を備えた締結具本体（頭部）に、上記バンド挿通孔に挿通されてきた締結バンド（バンド部）によって後方に逃がし揺動されかつ抜出し力が加わった締結バンド（バンド部）に係合することによってその締結バンド（バンド部）を抜け止めする係止部材（爪）が取り付けるようにした技術が開示されている。 "Patent Document 1" provides a fastener (locking tool) that does not cause insufficient tightening even if the fastening band (band part) is tightened only once and is not tightened twice. For the purpose, the fastener body (head part) provided with the band insertion hole through which the fastening band (band part) is inserted is swayed backward by the fastening band (band part) inserted through the band insertion hole. In addition, a technique is disclosed in which a locking member (claw) that prevents the fastening band (band part) from coming off by attaching to the fastening band (band part) to which the extraction force is applied is attached.

「特許文献２」には、ヘッド部（頭部）内のストラップ係止部材（爪）の折損を招くことなく、ストラップ（バンド部）をヘッド部（頭部）の貫通孔内に円滑に挿通してしっかりと固定することが可能な結束具（係止具）を提供することを目的とし、一対の係止部材（爪）の各々は、その各々の厚さ方向に向かって互いに反対側に位置する第１面および第２面を備え、前記一対の係止部材（爪）の各々の歯先（先端部）が前記一対の貫通孔の各々に突出するように前記第１面から前記第２面に向かって屈曲しているとともに、前記一対の係止部材（爪）の各々において、前記第１面に部分的に接触するように設けられた第１支持部と、前記第１支持部よりも係止部材（爪）の後端側に離間した位置において前記第２面に部分的に接触するように設けられた第２支持部とによって挟持された状態で前記ヘッド（頭部）の収容部内に収容されている、とした技術が開示されている。 In “Patent Document 2”, the strap (band part) is smoothly inserted into the through hole of the head part (head part) without causing breakage of the strap locking member (claw) in the head part (head part). In order to provide a binding tool (locking tool) that can be firmly fixed to each other, each of the pair of locking members (claws) is opposite to each other in the thickness direction thereof. A first surface and a second surface that are positioned, and each tooth tip (tip portion) of the pair of locking members (claws) protrudes from the first surface to each of the pair of through holes. A first support portion that is bent toward two surfaces and is provided so as to partially contact the first surface in each of the pair of locking members (claws); and the first support portion So as to partially contact the second surface at a position further away from the rear end side of the locking member (claw) than It is housed in the housing of the head (head) while being nipped by a second support portion provided, and the techniques are disclosed.

「特許文献１」は、締結バンド（バンド部）を締結具本体（頭部）のバンド挿通孔に挿通させたときに逃がし揺動される係止部材（爪）の後方への揺動幅を、上記当り部によって適正に規制させることが可能になるので、１回目の締付けによって起こる締付け不足を２回目の締付けによって解消するという煩わしい方法を行うことなく、１回だけの締付けによって締付け不足を生じることなく被締結部材を締め付けておくことが可能になるとしている。
しかし、係止部材（爪）の揺動幅を規制すると言うことは、係止部材（爪）を確実に締結バンド（バンド部）に食い込ませる位置に配置しておかなければならない。即ち、係止部材（爪）の先端が締結バンド（バンド部）に係止するために必要な締結バンド（バンド部）の長手方向に対する係止部材（爪）の角度（係止部材が締結バンドに食い込むために必要な角度）及び係止部材（爪）の姿勢の許容幅が極端に狭くなり、言わばピンポイントで合わせる必要が生じる。
従ってある範囲ばらつくことが避けられない大量生産には不向きであるとともに、締結バンド（バンド部）に食い込ませるための係止部材（爪）の前記角度と姿勢をピンポイントで合わせることを優先すると、係止部材（爪）や締結具本体（頭部）のばらつきによる係止部材（爪）の締結バンド（バンド部）への食い込み力の安定を考える必要があり前記当り部の締結バンド（バンド部）側への付勢力を強くせざるを得ない等、結局、締結バンド（バンド部）を締結具本体（頭部）のバンド挿通孔に挿通させるときの差込力が増加する結果となり、締結バンド（バンド部）を挿通孔へ差し込むときの作業性が悪くなることは避けられない。In “Patent Document 1”, the backward swing width of the locking member (claw) that is released and swings when the fastening band (band part) is inserted into the band insertion hole of the fastener body (head part). Since it is possible to properly regulate by the above-mentioned contact portion, insufficient tightening is caused by only one tightening without performing a troublesome method of eliminating the tightening shortage caused by the first tightening by the second tightening. It is possible to fasten the fastened member without any problem.
However, restricting the swinging width of the locking member (claw) must be disposed at a position where the locking member (claw) is securely bited into the fastening band (band part). That is, the angle of the locking member (claw) with respect to the longitudinal direction of the fastening band (band part) necessary for locking the tip of the locking member (claw) to the fastening band (band part) (the locking member is the fastening band) The angle required to bite into) and the allowable width of the posture of the locking member (claw) become extremely narrow, so to speak, it is necessary to pinpoint.
Therefore, it is not suitable for mass production in which variation within a certain range is inevitable, and priority is given to pinpointing the angle and posture of the locking member (claw) for biting into the fastening band (band part), It is necessary to consider the stability of the biting force of the locking member (claw) into the fastening band (band part) due to variations in the locking member (claw) and the fastener main body (head part). ) The urging force to the side has to be increased. As a result, the insertion force when inserting the fastening band (band part) through the band insertion hole of the fastener body (head part) is increased, resulting in fastening. It is inevitable that workability when the band (band part) is inserted into the insertion hole is deteriorated.

「特許文献２」は、第１面に部分的に接触するように設けられた第１支持部と、前記第１支持部よりも係止部材（爪）の後端側に離間した位置において前記第２面に部分的に接触するように設けられた第２支持部とによって係止部材（爪）が挟持された状態になっているため、やはり係止部材（爪）がストラップ（バンド部）に食い込むための角度及び係止部材（爪）の姿勢の許容幅が極端に狭くなり、言わばピンポイントで合わせる必要があり、「特許文献１」と同様に必然的にストラップ（バンド部）を挿通孔に差し込むときの作業性が悪くなることは避けられない。 In “Patent Document 2”, the first support portion provided so as to partially contact the first surface and the position separated from the first support portion toward the rear end side of the locking member (claw) are described above. Since the locking member (claw) is sandwiched between the second support portion provided so as to partially contact the second surface, the locking member (claw) is also the strap (band portion). The allowable angle of the angle and the attitude of the locking member (claw) is extremely narrow, so it is necessary to adjust it by pinpointing, and the strap (band part) is inevitably inserted as in “Patent Document 1”. It is inevitable that workability when inserting into the hole is deteriorated.

そこで本発明は、例えば、「特許文献１」のように、締め付け時に爪がバンド部に食い込む作用によってバンド部が少し緩むことによる二度締め防止を優先させても、バンド部は、結局長期間同じ状態の締付力を保持しているわけではなく、気温、湿度及び負荷の状態等により伸縮することは避けられないので、締め付け時のバンド部の緩み防止を優先しても実質的に意味がないことに鑑み、それよりも差し込み作業時の指への負担（大量の差込作業では、指の感覚が麻痺するほど影響が大きい）を軽減した方が有効であるとの判断から、バンド部を頭部の挿通孔に差し込む際、小さな差込力で差し込むことができ、加えて大量生産時にも安定してバンド部に爪を食い込ませることができるようにした上で顧客の長尺バンドの要求に応えることができる係止具を提供することを目的とする。 Therefore, the present invention, for example, as described in “Patent Document 1”, even if priority is given to preventing double tightening due to the band part slightly loosening due to the action of the nail biting into the band part during tightening, Since it does not hold the same tightening force, it is unavoidable to expand and contract depending on the temperature, humidity and load conditions, etc., so priority is given to preventing loosening of the band during tightening. In view of the fact that there is no such thing, it is determined that it is more effective to reduce the burden on the fingers during insertion work (the effect of the large amount of insertion work is so great that the finger sensation is paralyzed). When inserting the part into the insertion hole in the head, it can be inserted with a small insertion force, and in addition, the customer's long band can be inserted into the band part stably even during mass production. To meet the demands of And to provide a locking tool that can.

上記目的を達成するために本発明では、次のような手段を用いて課題を解決した。
第一の課題解決手段は、バンド部の挿通孔を有する合成樹脂製の頭部内に、前記バンド部よりも硬質の爪をこの爪の先端部が前記挿通孔に臨むように前記挿通孔側への付勢力を付与して配置し、前記爪の前記先端部が前記バンド部の係脱面に食い込みや離脱させることにより前記爪と前記バンド部とが係脱するようにして前記頭部側と前記バンド部側との協働による係脱部を構成した係止具であって、前記係脱部の内、前記頭部側の前記係脱部の前記爪を、この爪の先端部が前記係脱面への食い込み可能な範囲内に配備する一方、前記爪の前記先端部と反対側の部位に揺動支点部分を設け、この揺動支点部分が、前記頭部内で枢支されながら前記バンド部が前記挿通孔に挿通された時には、前記バンド部の挿通方向へ移動するとともに前記係脱面に対して近接する方向に移動し、前記バンド部が挿通方向とは反対方向に戻ろうとした時には前記係脱面に前記爪の前記先端部が食い込みながら前記揺動支点部分が、前記バンド部の反挿通方向へ移動するとともに前記係脱面と離反する方向に移動するように構成したことを特徴とする係止具を提供する。In order to achieve the above object, the present invention solves the problem by using the following means.
The first problem-solving means is to insert a claw harder than the band part into a synthetic resin head having a band part insertion hole so that the tip part of the claw faces the insertion hole. arranged to impart a biasing force to the head as said claws and said band portion is disengaged by the tip of the pawl causes the bite or disengaged disengagement surface of the band portion a locking tool configured disengagement portion by cooperation of the the side band portion side of the engaging portion, the pawl of the engaging portion of the head side, the tip of the nail The swinging fulcrum part is provided in a part of the claw opposite to the tip part, and the swinging fulcrum part is pivoted in the head. When the band portion is inserted into the insertion hole while being supported, the band portion moves in the insertion direction of the band portion and When the band portion moves in a direction close to the surface and tries to return to the direction opposite to the insertion direction, the swing fulcrum portion of the claw is inserted into the engagement / disengagement surface while the tip portion of the claw bites into the band portion. A locking tool is provided that is configured to move in a direction opposite to the insertion / removal direction and to move in a direction away from the engagement / disengagement surface .

第二の課題解決手段は、第一の課題解決手段に加え、爪の揺動支点部分の形状を、爪幅を縮幅させて形成した肩部と，この肩部の最縮幅位置から前記爪の先端部と反対側に徐々に拡幅するテーパ状にして延設した抜け止め片とで形成するとともに、頭部内に前記揺動支点部分の支持部分を設け、この揺動支点部分の支持部分の形状を、前記抜け止め片の形状よりも僅かに大きくこの抜け止め片と類似するテーパ形状にして前記爪を前記頭部内に遊嵌したことを特徴とする係止具を提供する。Second means for solving the problem, in addition to the first problem solving means, the shape of the swing fulcrum portion of the nail, a shoulder portion formed by the reduced width of the nail width, wherein the top width reduction position of the shoulder portion It is formed with a retaining piece extending in a taper shape that gradually widens on the opposite side to the tip of the claw, and a support portion for the swing fulcrum portion is provided in the head , and the swing fulcrum portion is supported. There is provided a locking tool characterized in that the shape of the portion is slightly larger than the shape of the retaining piece and a taper shape similar to the retaining piece, and the claw is loosely fitted in the head.

第三の課題解決手段は、第一又は第二の課題解決手段に加え、爪の先端部の形状を、バンド部の係脱面側への最大突出部と中間突出部とに分けて形成する一方、前記バンド部の前記係脱面の形状が、前記爪の前記最大突出部と対向する前記バンド部の前記係脱面を凸形状に、また前記爪の前記中間突出部と対向する前記バンド部の前記係脱面を前記凸形状の中腹位置になるように形成した係止具を提供する。In addition to the first or second problem solving means, the third problem solving means is formed by dividing the shape of the tip of the claw into a maximum protruding part and an intermediate protruding part toward the engaging / disengaging surface side of the band part. Meanwhile, the band shape of the engaging surface of the band portion, the disengaging surface of the band portion opposite to the maximum projecting portion of the pawl in a convex shape, which faces the intermediate projecting portion of the pawl the disengagement surface parts providing locking tool which was formed to have a middle position of said convex shape.

第四の課題解決手段は、第一〜第三のいずれかの課題解決手段に加え、係脱部を二つ用意して第一係脱部と第二係脱部とにし、前記第一係脱部に対して前記第二係脱部を交差するように配設した係止具を提供する。The fourth problem solving means, the first to third addition to any means for solving the problem, the first engaging and disengaging portion of the disengaging portion and two provided with the second engaging and disengaging portion and the west, the first engagement Provided is a locking tool arranged to cross the second engaging / disengaging portion with respect to the removing portion.

第五の課題解決手段は、第一〜第三のいずれかの課題解決手段に加え、係脱部を二つ用意して第一係脱部と第二係脱部とにし、前記第一係脱部に対して前記第二係脱部を並列に配設した係止具を提供する。The fifth problem solving means, the first to third addition to any means for solving the problem, the first engaging and disengaging portion of the disengaging portion and two provided with the second engaging and disengaging portion and the west, the first engagement Provided is a locking device in which the second engaging / disengaging portion is arranged in parallel with the disengaging portion.

第一の課題解決手段による作用は次の通りである。
頭部の挿通孔にバンド部を差し込む際は、付勢力を付与された爪の先端部がバンド部の係脱面に接触する作用により、爪がバンド部の差込方向にバンド部と共に移動して爪の揺動支点部分が浮き上がりながら、爪は起き上がる方向に回動するので爪の揺動支点部分はバンド部の係脱面側に少し浮きながら移動することになり爪の回動はスムーズに行われる。従って、爪の上記浮き上がりと回動によるスムーズな姿勢変化によりバンド部の挿通孔への差込力は軽減されることになる。
一方、バンド部が反差し込み方向に移動する場合は、バンド部の係脱面に爪の先端が接触状態となっていることから、爪の先端を起点として爪の揺動支点部分はバンド部の反差し込み方向への移動とともに移動しながらバンド部の係脱面側から離間する方向に移動することとなり、バンド部の係脱面と爪の先端との接触角が大きくなる。換言すれば、バンド部の係脱面に対する爪の姿勢角度が大きくなることにより、自動的に爪の先端部は食い込みポイントを探して係脱面に食い込むことになる。この角度変化は、爪の先端部がバンド部の係脱面に最良の食い込みポイントで大きく食い込むことを意味し、大量生産による爪位置や爪姿勢にある程度のばらつきがあっても食い込みポイントを外さない確実なバンド部の係止が実現する。
このように、第一の課題解決手段の作用効果を要約すると、バンド部の頭部への挿通時には揺動支点部分が浮き上がりながらバンド部の係脱面側に移動するので差し込み力が軽減され、その後バンド部を引き締めその反力でバンド部が反差し込み方向に戻ろうとした時には、差し込み時に浮き上がっていた揺動支点部分が戻りながらバンド部の係脱面側から離間する方向に移動して最良の角度で爪の先端部がバンド部係脱面に食い込むので、大量生産による爪位置や爪姿勢にある程度のばらつきがあっても食い込みポイントを外さない確実なバンド部の係止を行うことができる、という所期の目的を達成できる。 The operation of the first problem solving means is as follows.
When inserting the band portion into the insertion hole of the head movement, by the action of the tip portion of the claw granted a biasing force to come in contact to the disengaging surface of the band portion, the pawl is in the inserting direction of the band portion with the band portion swing fulcrum portion floating-out up of but al nails with the swing fulcrum portion of the nail so pawl is rotated in a direction rise will migrate while slightly lifting the disengagement side of the bands portion pawl The rotation is smoothly performed. Therefore, the insertion force to the insertion hole of the band portion is reduced by the smooth posture change caused by the lifting and rotation of the claw.
On the other hand, if the band portion is moved in a counter-insertion direction from the tip of the nail detachment surface of the band portion is in the contact state, the swing fulcrum portion of the nail tip of the nail as a starting point the band portion It moves in the direction away from the engagement / disengagement surface side of the band portion while moving with the movement in the anti-insertion direction, and the contact angle between the engagement / disengagement surface of the band portion and the tip of the claw is increased. In other words, when the posture angle of the nail with respect to the engagement / disengagement surface of the band portion is increased, the tip end portion of the nail automatically bites into the engagement / disengagement surface looking for the biting point. This angle change means that the tip of the pawl bites greatly disengagement surface of the band portion in the best bite point, remove the even biting point if there is some variation in the nail position and the pawl posture by mass production A reliable locking of the band part is realized.
Thus, to summarize the effects of the first problem solving means, the insertion force is reduced because the swinging fulcrum part moves to the engagement / disengagement side of the band part while lifting up when the band part is inserted into the head, After that, when the band part tries to return to the reverse insertion direction by tightening the band part, the swinging fulcrum part floating at the time of insertion returns to move away from the engagement / disengagement surface side of the band part and returns to the best. Since the tip of the nail bites into the band engagement / disengagement surface at an angle, even if there is some variation in nail position and nail posture due to mass production, the band part can be securely locked without removing the biting point. To achieve the intended purpose.

第二の課題解決手段による作用は次の通りである。
第一の課題解決手段の作用に加え、爪の揺動支点部分の形状と頭部の揺動支点支持部分の形状を僅かな隙間を持たせて類似するテーパ形状にして爪を遊嵌させたことにより、爪の幅方向の隙間が小さくても爪のバンド部の長手方向に移動距離を大きく取ることができる。換言すれば、頭部内壁寸法と爪の幅方向の寸法の隙間が極小さいものであっても爪の浮き上がり寸法を大きくすることができる。また、バンド部の係止状態では爪に圧縮荷重が作用するが、爪の両肩部が頭部の揺動支点の支持部分で支持されているため、形状がテーパ状に変化する部分にはこの強度の影響がない状態を維持できる。The operation of the second problem solving means is as follows.
In addition to the action of the first problem solving means, the shape of the rocking fulcrum portion of the claw and the shape of the rocking fulcrum support portion of the head are made into a similar tapered shape with a slight gap , and the claw is loosely fitted . Thereby, even if the gap in the width direction of the nail is small, the moving distance can be increased in the longitudinal direction of the band portion of the nail. In other words, even when the gap between the inner wall dimension of the head and the dimension in the width direction of the claw is extremely small, the lifting dimension of the claw can be increased. In addition, the compression load acts on the claw when the band part is locked, but both the shoulder parts of the claw are supported by the support part of the swing fulcrum of the head, so the part where the shape changes to a taper shape A state without the influence of the strength can be maintained.

第三の課題解決手段による作用は次の通りである。
爪の先端部の形状を、バンド部の係脱面側への最大突出部と中間突出部とに分けて形成する一方、バンド部の係脱面の形状が、爪の前記最大突出部と対向するバンド部係脱部位を凸形状に、また爪の前記中間突出部と対向するバンド部の係脱面を凸形状の中腹位置になるように形成したことにより、爪の最大突出部とバンド部の係脱面を凸形状との圧接が局部的になるため小さな押圧力で爪をバンド部の係脱面に食い込ませることができる。従って爪を押圧する付勢力は必要最小限で足り、結果としてバンド部の差込力低減を加速させることができる。さらに、爪先端部のバンド部の係脱面への食い込みは、最大突出部による予備的な食い込みの後、中間突出部がバンド部の係脱面の凸形状の中腹位置に食い込むが、その食い込み態様は点接触に近い状態になり、中間突出部とバンド部の係脱面とが平行に接する場合に比べて極めて良好な食い込み作用を得られる。その結果、第一、第二の作用効果にさらに上述した作用効果が加えられることになり、安定した爪の食い込み力とやさしい差込作用を同時に得られる。The operation of the third problem solving means is as follows.
The shape of the tip of the claw is divided into a maximum protrusion and an intermediate protrusion on the engagement / disengagement surface side of the band portion, while the engagement / disengagement surface of the band portion faces the maximum protrusion of the nail. the band portion engaging and disengaging portion in a convex shape, by forming such that the disengagement surface of the band portion opposite to the intermediate projection of the claw in the middle position of the convex, maximum protrusion of the pawl and the band portion for Since the press-contact surface of the engaging / disengaging surface is locally contacted with the convex shape, the claw can be bitten into the engaging / disengaging surface of the band portion with a small pressing force. Therefore biasing force for pressing the nail enough at the required minimal, can accelerate the results insertion force of the band portion reduced as a. Further, the biting of the detachment surface of the band portion of the claw end portion, after the preliminary biting by the maximum protrusion, the intermediate protrusions bite into the middle position of the convex shape of the engaging and disengaging surface of the band portion, biting its The aspect becomes a state close to point contact, and an extremely good biting action can be obtained as compared with the case where the intermediate projecting portion and the engaging / disengaging surface of the band portion are in contact with each other in parallel. As a result, the above-described operational effects are added to the first and second operational effects, and a stable nail biting force and a gentle insertion effect can be obtained at the same time.

第四の課題解決手段による作用は次の通りである。
第一〜第三の課題解決手段による作用に加え、係脱部を二つ用意して第一係脱部と第二係脱部とにし、前記第一係脱部に対して第二係脱部を交差するように配設したことにより、差し込み作業性の良い一般的な合成樹脂結束帯に類似した係止具を得られる。従って、顧客のバンド長さの要求が多種多様に渡っても即対応が可能となる。The operation of the fourth problem solving means is as follows.
In addition to the effect of the first to third means for solving problems, the first engaging and disengaging portion of the disengaging portion and two provided with the second engaging and disengaging portion and the west, the second disengaged with respect to said first disengaging portion By disposing the parts so as to cross each other, it is possible to obtain a locking tool similar to a general synthetic resin cable tie having good insertion workability . Therefore, it is possible to respond immediately even if there are various customer band length requests.

第五の課題解決手段による作用は次の通りである。
第一〜第三の課題解決手段による作用に加え、係脱部を二つ用意して第一係脱部と第二係脱部とにし、前記第一係脱部に対して第二係脱部を並列に配設したので、バンド部を頭部に差し込む作業は二つとも同方向から行うことができるので、結束等の現場で頭部とバンド部を組み立てる場合には作業性が良く好都合である。The operation of the fifth problem solving means is as follows.
In addition to the effect of the first to third means for solving problems, the first engaging and disengaging portion of the disengaging portion and two provided with the second engaging and disengaging portion and the west, the second disengaged with respect to said first disengaging portion Since the parts are arranged in parallel, the work of inserting the band part into the head can be performed from the same direction, so workability is good and convenient when assembling the head part and the band part at the site such as binding. It is.

本発明は、バンド部分を頭部の挿通孔に差し込む際、小さな差込力で差し込むことができ、加えて大量生産時にも安定してバンド部の係脱面に爪を食い込ませることができるようにした上で顧客の長尺バンドの要求に応えることができるとした、所期の目的を達成できるとともに、第一の課題の解決手段に従属する各課題の解決手段を付加することにより、上述した各作用効果を奏することができる。In the present invention, when the band portion is inserted into the insertion hole of the head, it can be inserted with a small insertion force, and in addition, it is possible to stably bite the nail into the engagement / disengagement surface of the band portion even during mass production. In addition to achieving the intended purpose of being able to meet the customer's demands for long bands and adding means for solving each problem subordinate to the means for solving the first problem, Each effect obtained can be achieved.

本発明の一実施例を示す頭部の全体斜視図The whole head perspective view showing one example of the present invention. 図１の中央縦断面斜視図1 is a perspective view of the central longitudinal section of FIG. 図１に示す頭部の正面図Front view of the head shown in FIG. 図３の底面図Bottom view of FIG. 図３の右側面図Right side view of FIG. 図２に該当する図３のＡ−Ａ線の断面図3 is a cross-sectional view taken along line AA in FIG. 3 corresponding to FIG. 図３に示すＢ−Ｂ線の断面図Sectional drawing of the BB line shown in FIG. 図６に示すＣ−Ｃ線の断面図Sectional view of the CC line shown in FIG. 本発明の一実施例を示すバンド部の端面図End view of the band portion showing an embodiment of the present invention 図９のバンド部の長さ方向を示し、一部分を表す正面図The front view which shows the length direction of the band part of FIG. 9, and represents a part 図１〜８に示す頭部と図９，１０に示すバンド部とを使用して形成した本発明の一実施例を示す係止具全体の組立説明図Assembly explanatory drawing of the whole locking tool showing an embodiment of the present invention formed using the head shown in FIGS. 1 to 8 and the band shown in FIGS. 図９，１０に示すバンド部と図１６に示す爪の係止状態の拡大説明図Enlarged explanatory view of the state of locking the band shown in FIGS. 9 and 10 and the claw shown in FIG. 図２と図６相当に断面した係脱状態を示す説明図Explanatory drawing which shows the engagement / disengagement state which was equivalent to FIG. 2 and FIG. 図７に示す爪の遊嵌状態の拡大断面説明図FIG. 7 is an enlarged cross-sectional explanatory diagram of the nail free-fitting state shown in FIG. 図１３の一部の拡大断面説明図13 is an enlarged cross-sectional explanatory diagram of a part of FIG. 爪単体の全体斜視図Whole perspective view of nails alone 他の実施例を示す断面説明図Cross-sectional explanatory drawing showing another embodiment

図１〜図８において、合成樹脂、例えばポリアミドやポリアセタール等で形成した頭部１には二系統の頭部１側の係脱部、即ち第一係脱部２と第二係脱部３を直交するように配設している。
各係脱部２，３は、後述するバンド部１０を通すための頭部１を貫通する挿通孔２１，３１と，挿通孔２１，３１に先端部２２１，３２１が臨むように配置したバンド部１０よりも硬質、例えば銅合金やステンレス等の金属製の爪２２，３２と，爪２２，３２の背面の一部をバンド部１０の係脱面１０１方向に押圧付勢する付勢機構２４，３４と，爪２２，３２の押圧付勢位置より下部の前記爪２２，３２部分に設けたこの爪２２，３２をバンド部１０の前記係脱面１０１方向に揺動させる揺動支点部分２２２，３２２と，この揺動支点部分２２２，３２２を遊嵌支持するために頭部１内に形成した揺動支点支持部分２３，３３と，で基本形成している。
なお、第一係脱部２の挿通孔２１は、貫通させているが、第二係脱部３の挿通孔３１は差し込み方向奥の分が閉口させている。1 to 8, the head 1 formed of a synthetic resin, such as polyamide or polyacetal, has two systems of engaging / disengaging parts on the head 1 side, that is, a first engaging / disengaging part 2 and a second engaging / disengaging part 3. It arrange | positions so that it may orthogonally cross.
Each engagement / disengagement part 2 and 3 is the insertion part 21 and 31 which penetrates the head 1 for letting the band part 10 mentioned later pass, and the band part arrange | positioned so that the front-end | tip parts 221 and 321 may face the insertion hole 21 and 31 Claws 22 and 32 made of metal such as copper alloy or stainless steel, and a biasing mechanism 24 that presses and urges a part of the back surface of the claws 22 and 32 toward the engagement / disengagement surface 101 of the band portion 10. 34 and a swing fulcrum portion 222 for swinging the claws 22 and 32 provided in the portions of the claws 22 and 32 below the pressing biasing positions of the claws 22 and 32 toward the engagement / disengagement surface 101 of the band portion 10. 322 and swing fulcrum support portions 23 and 33 formed in the head 1 for loosely supporting the swing fulcrum portions 222 and 322 are basically formed.
In addition, although the insertion hole 21 of the 1st engagement / disengagement part 2 is penetrated, the part in the insertion direction back is closed for the insertion hole 31 of the 2nd engagement / disengagement part 3.

さらに第一，第二係脱部２，３の爪２２，３２について、特に図１６を参照して詳述すれば、爪２２，３２は、先端部２２１，３２１が爪２２，３２の幅方向両端に位置させ先端をシャープエッヂにした一対の最大突出部２２１ａ，３２１ａと，それら最大突出部２２１ａ，３２１ａの内側に位置させ、最大突出部２２１ａ，３２１ａより先端を少し引き込ませ、先端をシャープエッヂにした中間突出部２２１ｂ，３２１ｂと，から形成している。
また、爪２２，３２の先端部２２１，３２１の反対側の揺動支点部分２２２，３２２は、爪２２，３２の幅を縮幅させて形成した肩部２２２ａ，３２２ａと，この肩部２２２ａ，３２２ａの最縮幅位置Ｗ１から爪２２，３２の先端部２２１，３２１と反対側に徐々に拡幅するテーパ状にして延設した抜け止め片２２２ｂ，３２２ｂとで形成している。そして、爪２２，２３の側面視において先端部２２１，３２１と抜け止め片２２２ｂ，３２２ｂの中間付近を鈍角に曲げ加工している。
このように曲げ加工する理由は、図６，図１５で説明すれば、頭部１内の揺動支点支持部分２３，３３の爪２２，３２厚み方向のスペースを小さくしても、後述するようにバンド部１０の係脱面１０１と爪２２，３２先端部２２１，３２１との食い込みに有効な角度θを確保しやすいからである。
即ち、バンド部１０の挿通方向に対する爪２２，３２の側面視の姿勢が爪２２，３２の先端部２２１，３２１のａ点（図１５）を折り返しの基点として鋭角に折り返して揺動支点部分２２２，３２２の支点を通る角度θにした状態になるように爪２２，３２を配置している。
また、爪２２，３２の揺動支点部分２２２，３２２を遊嵌する揺動支点支持部分２３，３３は、図７，図１４に示すように、爪２２，（３２）の各左右両肩部２２２ａ，（３２２ａ）を受ける肩受け部２３１，（３２１）と最縮幅位置Ｗ１を起点として先端部２２１，（３２１）とは反対方向へ徐々に拡幅するテーパ状に延設した抜け止め片２２２ｂ，（３２２ｂ）の外形状とほぼ同じ形状を有するテーパ受け部２３２，（３３２）からなり、テーパ状の抜け止め片２２２ｂ，（３２２ｂ）の外形状とテーパ受け部２３２，（３３２）の間には隙間δ（図１４）を設けている。Further, the claws 22 and 32 of the first and second engaging / disengaging portions 2 and 3 will be described in detail with reference to FIG. 16 in particular. The claws 22 and 32 have the tip portions 221 and 321 in the width direction of the claws 22 and 32. A pair of maximum protrusions 221a, 321a with sharp edges positioned at both ends, and positioned inside the maximum protrusions 221a, 321a, with the tips slightly retracted from the maximum protrusions 221a, 321a, and sharp edges at the edges Intermediate protrusions 221b and 321b.
Further, the swing fulcrum portions 222 and 322 on the opposite side of the tip portions 221 and 321 of the claws 22 and 32 are shoulder portions 222a and 322a formed by reducing the width of the claws 22 and 32, and the shoulder portions 222a and 222a, respectively. It is formed by retaining pieces 222b and 322b extending in a tapered shape that gradually widens from the most contracted width position W1 of 322a to the opposite side to the tip portions 221 and 321 of the claws 22 and 32. Then, in the side view of the claws 22 and 23, the middle portions of the tip portions 221 and 321 and the retaining pieces 222b and 322b are bent at an obtuse angle.
The reason for bending in this way will be described later with reference to FIGS. 6 and 15, even if the space in the thickness direction of the claws 22 and 32 of the swing fulcrum support portions 23 and 33 in the head 1 is reduced. This is because it is easy to secure an angle θ effective for biting between the engagement / disengagement surface 101 of the band portion 10 and the claw 22 and 32 tip portions 221 and 321.
That is, the side view postures of the claws 22 and 32 with respect to the insertion direction of the band portion 10 are folded back at an acute angle with the point a (FIG. 15) of the distal end portions 221 and 321 of the claws 22 and 32 as a pivot base point. , 322 are arranged so that the angle θ passes through the fulcrum of 322 .
Further, the swing fulcrum support portions 23 and 33 for loosely fitting the swing fulcrum portions 222 and 322 of the claws 22 and 32 are provided on the left and right shoulders of the claws 22 and (32) as shown in FIGS. 222a and (322a) shoulder receiving portions 231 and (321) and a retaining piece 222b extending in a taper shape gradually widening in the opposite direction to the tip portions 221 and (321) starting from the most contracted width position W1. , (322b) and taper receiving portions 232 and (332) having substantially the same shape, and between the outer shape of the taper retaining pieces 222b and (322b) and the taper receiving portions 232 and (332). Provides a gap δ (FIG. 14).

一方、図２，図６に示すように、係脱部２，３の付勢機構２４，３４は、爪２２，３２の背面の長手方向中間部を押すために弾性力を付与した押圧レバー２４１，３４１と，この押圧レバー２４１，３４１の基部を支持するレバー支持部２４２，３４２とで形成している。
押圧レバー２４１，３４１の弾性力は、爪２２，３２の最大突出部２２１ａ，３２１ａ先端がバンド部１０の係脱面１０１と爪２２，３２との有効な角度θ２（図１５において爪２２，３２の先端がｂ点位置の姿勢参照）の姿勢時に、バンド部１０の係脱面１０１に僅かに食い込む程度の付勢力を有するようにしている。
以上のように構成した係脱部２，３を図２，図６に示すように直交するように配置し、爪２２，３２以外の二系統の係脱部２，３は各種樹脂により一体的に形成して頭部１を構成している。On the other hand, as shown in FIGS. 2 and 6, the urging mechanisms 24 and 34 of the engagement / disengagement units 2 and 3 have a pressing lever 241 to which an elastic force is applied in order to push the longitudinal intermediate portion of the back surface of the claws 22 and 32. , 341 and lever support portions 242 and 342 for supporting the bases of the pressing levers 241 and 341.
The elastic forces of the pressing levers 241 and 341 are such that the tips of the maximum protrusions 221a and 321a of the claws 22 and 32 are at an effective angle θ2 between the engagement / disengagement surface 101 of the band portion 10 and the claws 22 and 32 (in FIG. 15, the claws 22 and 32). (See the posture at the tip of the point b)), and the urging force of slightly biting into the engagement / disengagement surface 101 of the band portion 10 is provided.
The engaging / disengaging portions 2 and 3 configured as described above are arranged so as to be orthogonal as shown in FIGS. 2 and 6, and the two engaging / disengaging portions 2 and 3 other than the claws 22 and 32 are integrated with various resins. The head 1 is formed.

上記頭部１に差し込んで使用するバンド部１０は、ポリアミド，ポリアセタール，ポリプロピレン等の合成樹脂で図９，図１０，及び図１２に示すように、端面形状において係脱面１０１が波状になるよう押出成形等により連続的に形成している。これを詳述すれば、図１２に示すように係脱面１０１の波状形状位置は、爪２２，３２の最大突出部２２１ａ，３２１ａ先端に対向する位置に設けた第一の山１０１ａと，爪２２，３２の中間突出部２２１ｂ，３２１ｂに中腹位置が対向するように配置した第二の山１０１ｂとから形成してバンド部１０側の係脱部を構成している。
上記のような端面形状にしたバンド部１０は、主に押出成形により例えば数百メートルになるような長尺に成形し、必要長さに切断して使用するようにしている（図１０参照）。The band portion 10 used by being inserted into the head 1 is made of synthetic resin such as polyamide, polyacetal, polypropylene, etc., so that the engagement / disengagement surface 101 has a wave shape as shown in FIGS. 9, 10 and 12. It is formed continuously by extrusion or the like. More specifically, as shown in FIG. 12, the wavy shape position of the engagement / disengagement surface 101 includes the first crest 101a provided at the position facing the tip of the maximum protrusions 221a, 321a of the claws 22, 32, and the claws. An engaging / disengaging part on the band part 10 side is formed by a second peak 101b arranged so that the middle position of the intermediate projecting parts 221b and 321b of 22 and 32 is opposed to each other.
The band portion 10 having the end face shape as described above is formed into a long length of, for example, several hundred meters mainly by extrusion molding, and is cut into a necessary length for use (see FIG. 10). .

これまで説明した頭部１とバンド部１０の係脱作用を第一係脱部２について図１４，１５を中心に説明すると、図１５において、第一係脱部２の付勢機構２４の押圧レバー２４１が爪２２の背面の長手方向中間部に略接触するかあるいは接触に近い状態の時に、爪２２は実線で示す位置にあり爪２２の先端部２２１の位置はａ点にある。バンド部１０を挿通孔２１（矢印ＦＹ方向）に差し込み、バンド部１０の先端が爪２２の先端部２２１まで達すると、挿入力ＦＹに対し爪２２を押圧レバー２４１の付勢力に抗する力ＦＸ１が作用する。この作用に伴って、爪２２は図１４に示す隙間δとテーパ形状によって生ずるＹ方向の自由移動範囲ｈだけ上方に移動しながら押圧レバー２４１の付勢力に抗する力ＦＸ１（図１５）の作用力により起き上がる方向に回動する。即ち、図１５に示すように、バンド部１０の係脱面１０１と爪２２との角度θが小さくなって角度θ２となり、爪２２の先端はｂ点に移動する。換言すれば挿入力ＦＹを一定とした場合、付勢力に抗する力ＦＸ２は角度θからθ２に近づくに従って大きくなり、爪２２の位置変化（爪２２先端部２２１がａ点からｂ点に移動）に伴って増大する押圧レバー２４１の付勢力に抗する力も大きくなる。
その結果バンド部１０の挿入力は、前記爪２２の移動に伴う押圧レバー２４１の付勢力が増大してもあまり変化することがないことを意味し、従来のように大きな挿入力が必要なくなり作業性が改善されることになる。The engagement / disengagement of the head 1 and the band portion 10 described so far will be described with reference to FIGS. 14 and 15 for the first engagement / disengagement portion 2. In FIG. When the lever 241 is substantially in contact with or close to the longitudinal intermediate portion on the back surface of the claw 22, the claw 22 is in a position indicated by a solid line, and the position of the tip 221 of the claw 22 is at point a. When the band part 10 is inserted into the insertion hole 21 (in the arrow FY direction) and the tip of the band part 10 reaches the tip part 221 of the claw 22, the force FX1 resists the urging force of the pressing lever 241 against the insertion force FY. Works. Along with this action, the claw 22 moves upward by a free movement range h in the Y direction generated by the gap δ and the taper shape shown in FIG. 14, and the action FX1 (FIG. 15) resists the urging force of the pressing lever 241. It turns in the direction to get up by force. That is, as shown in FIG. 15, the angle θ between the engagement / disengagement surface 101 of the band portion 10 and the claw 22 is reduced to an angle θ2, and the tip of the claw 22 moves to point b. In other words, when the insertion force FY is constant, the force FX2 against the urging force increases as the angle θ approaches θ2, and the position of the claw 22 changes (the claw 22 tip 221 moves from point a to point b). As a result, the force against the urging force of the pressing lever 241 increases.
As a result, it means that the insertion force of the band portion 10 does not change much even if the urging force of the pressing lever 241 accompanying the movement of the claw 22 is increased. Will be improved.

続いてバンド部１０に図１５において下方への力（矢印ＦＹと反対方向の力）が作用した場合について説明すると、
図１５においてｂ位置ある爪２２の先端部２２１は、押圧レバー２４１の付勢力によりバンド部１０の係脱面１０１に僅かに食い込む程度の圧接状態になっているので、爪２２の先端部２２１のｂ点が力点となり爪２２の背面に当接する付勢機構２４の押圧レバー２４１の部分が支点となって、作用点となる爪２２の揺動支点部分２２２がバンド部１０の差し込み作用により浮き上がっていた状態から押圧レバー２４１の当接面を中心に上記バンド部１０の差込時とは逆方向へ回動する。従って爪２２の揺動支点部分２２２はバンド部１０の係脱面１０１側から離間する方向に移動することとなり、爪２２の先端部２２１のｂ点を基点として鋭角（θ２）に折り返した状態になっていたバンド部１０の係脱面１０１に対する爪２２の姿勢角度がθ１で示すように爪２２の先端がｃ位置に移動した時に大きくなり、換言すれば、爪２２の先端位置がｂ点からｃ点に位置移動し、バンド部１０の係脱面１０１に食い込むことになる。即ち、爪２２の先端が僅かでもバンド部１０の係脱面１０１に接触若しくは食い込み気味の状態（点ｂの位置）を始点としてのバンド部１０と爪２２の側面視の角度増加変化（θ２からθ１への変化）は、最良の食い込みポイントで爪２２の先端部２２１がバンド部１０の係脱面１０１に大きく食い込むことを意味し、大量生産による爪２２位置や爪２２姿勢にある程度のばらつきがあっても確実なバンド部１０の係止が実現できる。Next, the case where a downward force (force in the direction opposite to the arrow FY) in FIG.
In FIG. 15, the tip portion 221 of the claw 22 at the position b is in a pressure contact state that slightly bites into the engagement / disengagement surface 101 of the band portion 10 by the urging force of the pressing lever 241. The portion of the pressing lever 241 of the urging mechanism 24 that contacts the back surface of the claw 22 with the point b serving as a power point serves as a fulcrum, and the swinging fulcrum portion 222 of the claw 22 serving as the action point is lifted by the insertion action of the band portion 10. From this state, the band portion 10 is rotated in the opposite direction around the contact surface of the pressing lever 241. Accordingly, the swing fulcrum portion 222 of the claw 22 moves in a direction away from the engagement / disengagement surface 101 side of the band portion 10, and is folded back at an acute angle (θ2) with the point b of the tip portion 221 of the claw 22 as a base point. When the tip of the claw 22 moves to the c position as indicated by θ1, the posture angle of the claw 22 with respect to the engaging / disengaging surface 101 of the band portion 10 increases, in other words, the tip of the claw 22 moves from the point b. The position moves to the point c and bites into the engagement / disengagement surface 101 of the band unit 10. That is, even if the tip of the claw 22 is slightly in contact with the engagement / disengagement surface 101 of the band part 10 or the state of biting (the position of the point b), the angle increase change (from θ2) in the side view of the band part 10 and the claw 22 is started. (change to θ1) means that the tip portion 221 of the claw 22 greatly bites into the engagement / disengagement surface 101 of the band portion 10 at the best biting point, and there is some variation in the position and posture of the claw 22 due to mass production. Even if it exists, reliable latching of the band part 10 is realizable.

この爪２２先端部２２１の係脱面１０１への食い込みに際し、爪２２の最大突出部２２１ａとバンド部１０の係脱面１０１の第一の山１０１ａとの圧接が局部的になるため、付勢機構２４の小さな押圧力で爪２２をバンド部１０の係脱面１０１に食い込ませることができる。従って爪２２を押圧する付勢機構２４は必要最小限の付勢力で足り、結果としてバンド部１０の差込力低減を加速させることができる。さらに、爪２２先端部２２１のバンド部１０係脱面１０１への食い込みは、最大突出部２２１ａによる予備的な食い込みの後、中間突出部２２１ｂがバンド部１０係脱面１０１の第二の山１０１ｂの中腹に食い込むが、バンド部１０の係脱面１０１の第二の山１０１ｂの中腹が斜め形状になっているため中間突出部１０１ｂとバンド部１０の係脱面１０１の第二の山１０１ｂの中腹とは点接触に近い状態になり、中間突出部２２１ｂとバンド係脱面１０１とがフラットに接する場合に比べて極めて良好な食い込み作用効果を得られることになり、安定した爪２２の食い込み力と前述したやさしい差込作用の両方を同時に得られることになる。When the claw 22 tip 221 bites into the engagement / disengagement surface 101, the pressure contact between the maximum protrusion 221a of the claw 22 and the first peak 101a of the engagement / disengagement surface 101 of the band portion 10 becomes local. The claw 22 can be caused to bite into the engagement / disengagement surface 101 of the band portion 10 with a small pressing force of the mechanism 24. Accordingly, the urging mechanism 24 that presses the claw 22 is sufficient with a minimum necessary urging force, and as a result, the insertion force reduction of the band portion 10 can be accelerated. Further, the claw 22 tip 221 bites into the band part 10 engagement / disengagement surface 101 after the preliminary projection by the maximum protrusion part 221a, the intermediate protrusion part 221b becomes the second peak 101b of the band part 10 engagement / disengagement surface 101. The middle part of the second peak 101b of the engagement / disengagement surface 101 of the band part 10 has an oblique shape, so the intermediate protrusion part 101b and the second peak 101b of the engagement / disengagement surface 101 of the band part 10 are The middle abdomen is in a state close to point contact, and an extremely good biting effect can be obtained as compared with the case where the intermediate projecting portion 221b and the band engagement / disengagement surface 101 are in flat contact with each other. And the above-described easy insertion action can be obtained at the same time.

一方、バンド部１０の係止状態では爪２２に圧縮荷重が作用するが、爪２２の両肩部２２２ａが頭部１の揺動支点支持部分２３の肩受け部２３１で支持されているため、爪２２を頭部１に遊嵌した状態でも、爪２２の抜け止め片２２２ｂと頭部１のテーパ受け部２３２の遊嵌部分には圧縮荷重の影響が及ばない状態が維持される。
以上のように、爪２２の揺動支点部分２２２の形状を、爪幅を縮幅させて形成した肩部２２２ａとこの肩部２２２ａの最縮幅位置から爪２２の先端部２２１と反対側に徐々に拡幅するテーパ状にした抜け止め片２２２ｂを延設するとともに、頭部１の揺動支点支持部分２３の形状を前記抜け止め片２２２ｂの形状よりも僅かに大きくこの抜け止め片２２２ｂと類似するテーパ形状にして爪２２を頭部１に遊嵌したので、爪２２の隙間δとテーパ形状によって生ずるＹ方向の自由移動範囲ｈ（図１４参照）だけ上方に移動できるのである。従って爪２２の幅方向の隙間δが小さくても爪２２のバンド部１０の挿通方向への移動は比較的大きくとることができる。言い換えれば、バンド部１０の差込時には差込力を軽減し、バンド部１０の係止時には爪２２の係脱面１０１への食い込みを大きくなるような爪２２の角度を得られる他、爪２２の幅方向の隙間δを小さくできるので、バンド部１０の係脱面１０１の第一の山及び第二の山に対する爪２２の先端部２２１の最大突出部２２１ａと中間突出部２２１ｂとの幅方向の位置関係のずれを防止でき、特に爪２２の先端部２２１に最大突出部２２１ａと中間突出部２２１ｂを設けた場合には良好で安定したバンド部の係止状態を得られる。
なお、第二係脱部３の作用効果は、上述の第一係脱部２の作用効果と同じにつき説明を省略する。On the other hand, the compression load acts on the claw 22 in the locked state of the band portion 10, but both shoulder portions 222 a of the claw 22 are supported by the shoulder receiving portions 231 of the swing fulcrum support portion 23 of the head 1. Even in a state in which the claw 22 is loosely fitted to the head 1, a state in which the compression load is not exerted on the loosely fitting portion 222 b of the claw 22 and the taper receiving portion 232 of the head 1 is maintained.
As described above, the shape of the swing fulcrum portion 222 of the claw 22 is changed from the shoulder portion 222a formed by reducing the claw width to the opposite side of the tip portion 221 of the claw 22 from the most contracted width position of the shoulder portion 222a. A taper-like retaining piece 222b that gradually widens is extended, and the shape of the swing fulcrum support portion 23 of the head 1 is slightly larger than the shape of the retaining piece 222b and is similar to the retaining piece 222b. Since the claw 22 is loosely fitted to the head 1 so as to be tapered, the claw 22 can be moved upward by a free movement range h (see FIG. 14) in the Y direction caused by the gap δ of the claw 22 and the taper shape. Therefore, even when the gap δ in the width direction of the claw 22 is small, the movement of the claw 22 in the insertion direction of the band portion 10 can be relatively large. In other words, the insertion force can be reduced when the band portion 10 is inserted, and the angle of the claw 22 can be obtained so that the engagement of the claw 22 with the engagement / disengagement surface 101 is increased when the band portion 10 is locked. Since the gap δ in the width direction can be reduced, the width direction between the maximum protrusion 221a and the intermediate protrusion 221b of the tip 221 of the claw 22 with respect to the first peak and the second peak of the engagement / disengagement surface 101 of the band part 10 can be reduced. In particular, when the maximum protrusion 221a and the intermediate protrusion 221b are provided at the tip 221 of the claw 22, a good and stable locking state of the band portion can be obtained.
In addition, since the effect of the 2nd engagement / disengagement part 3 is the same as the effect of the above-mentioned 1st engagement / disengagement part 2, description is abbreviate | omitted.

上記のように頭部１の直交する二系統の第一係脱部２，第二係脱部３とバンド部１０と組立及び結束等の作業について述べれば、図１１に示すように、先ず、長さが数十メートル若しくは数百メートルにも及ぶバンド部１０を所望の長さに切断し、その一端部を頭部１の第二係脱部３の挿通孔３１に差し込み他端部を自由端にしておく。次に被結束物（図示せず）にバンド部１０を捲回した後、バンド部１０の自由端を第一係脱部２の挿通孔２１に差し込み被結束物を締め付ける。第一係脱部２及び第二係脱部３に差し込んだバンド部１０に、差し込み方向と反対側の力が作用すると、上述した作用により爪２２，３２によりバンド部の係脱面１０１がロックされる。
上記作業は、あらかじめバンド部１０を所望の長さに切断し、その一端部を頭部１の第二係脱部３の挿通孔３１に差し込み他端部を自由端にするまでの作業を製造段階の作業として位置づければ、顧客は現在流通している合成樹脂製結束帯と同様にバンド部１０の自由端を第一係脱部２に差し込むだけの作業で済むことになり、結束作業等を従来品と違和感なく行うことができるとともに、特に金型等を多種類作らなくても顧客が所望する長さの係止具を短期間に提供できる。As described above, as shown in FIG. 11, the two systems of the first engagement / disengagement unit 2, the second engagement / disengagement unit 3, the band unit 10, and the assembly and binding of the head 1 are orthogonal. The band part 10 having a length of several tens of meters or several hundreds of meters is cut to a desired length, and one end thereof is inserted into the insertion hole 31 of the second engaging / disengaging part 3 of the head 1 and the other end is free. Keep it on the edge. Next, after the band part 10 is wound around the object to be bound (not shown), the free end of the band part 10 is inserted into the insertion hole 21 of the first engaging / disengaging part 2 and the object to be bound is tightened. When a force on the side opposite to the insertion direction is applied to the band portion 10 inserted into the first engagement / disengagement portion 2 and the second engagement / disengagement portion 3, the engagement / disengagement surface 101 of the band portion is locked by the claws 22 and 32 by the above-described action. Is done.
The above-mentioned operation is performed by cutting the band portion 10 to a desired length in advance, inserting one end portion thereof into the insertion hole 31 of the second engaging / disengaging portion 3 of the head portion 1 and making the other end portion a free end. If positioned as a stage work, the customer only needs to insert the free end of the band part 10 into the first engagement / disengagement part 2 in the same manner as the synthetic resin binding band currently in circulation. Can be performed without a sense of incongruity with conventional products, and a locking tool having a length desired by the customer can be provided in a short period of time without particularly making many types of molds.

上述した爪２２，３２の材質は金属で説明したが、前記バンド部１０よりも硬質の爪であればよく、例えばポリフェニレンサルファイド（ＰＰＳ）や繊維強化等の複合材料等、バンド部１０に先端が食い込める硬質の樹脂やセラミックス等にしても良い。 The material of the above-described claws 22 and 32 has been described as a metal, but it is sufficient that the claws are harder than the band portion 10. For example, the tip of the band portion 10 is made of a composite material such as polyphenylene sulfide (PPS) or fiber reinforcement. It may be made of hard resin or ceramics that can bite.

上述した実施例では、第一係脱部２，第二係脱部３を直交させた例について説明したが、第一係脱部２と第二係脱部３のそれぞれの挿通孔２１，３１の交差角度を作業性等を考慮して変化させてもよい。 In the embodiment described above, an example in which the first engagement / disengagement unit 2 and the second engagement / disengagement unit 3 are orthogonal to each other has been described. However, the insertion holes 21, 31 of the first engagement / disengagement unit 2 and the second engagement / disengagement unit 3, respectively. The crossing angle may be changed in consideration of workability and the like.

更に、図１７に示すように第一係脱部２と同形状のものを２つ用意し、これらを並列に配置しても良い。この場合は、バンド部１０を頭部１に差し込む作業は二つとも同方向から行うことができるので、結束等の現場で頭部１とバンド部１０を組み立てる場合には作業性が良く好都合である。 Furthermore, as shown in FIG. 17, you may prepare two things of the same shape as the 1st engagement / disengagement part 2, and arrange these in parallel. In this case, both of the operations for inserting the band portion 10 into the head 1 can be performed from the same direction. Therefore, when assembling the head 1 and the band portion 10 at a site such as binding, workability is good and convenient. is there.

１頭部
２第一係脱部（係脱部）
２１挿通孔
２２爪
２２１先端部
２２１ａ最大突出部
２２１ｂ中間突出部
２２２揺動支点部分
２２２ａ肩部
２２２ｂ抜け止め片
２３揺動支点支持部分
２４付勢機構
３第二係脱部（係脱部）
３１挿通孔
３２爪
３２１先端部
３２１ａ最大突出部
３２１ｂ中間突出部
３２２揺動支点部分
３２２ａ肩部
３２２ｂ抜け止め片
３３揺動支点支持部分
３４付勢機構
１０バンド部
１０１係脱面
１０１ａ第一の山（係脱部位の凸形状）
１０１ｂ第二の山（係脱部位の凸形状）1 Head 2 First engaging / disengaging part (engaging / disengaging part)
21 insertion hole 22 claw 221 tip 221a maximum protrusion 221b intermediate protrusion 222 swing fulcrum part 222a shoulder 222b retaining piece 23 swing fulcrum support part 24 urging mechanism 3 second engaging / disengaging part (engaging part)
31 Insertion hole 32 Claw 321 Tip portion 321a Maximum protrusion 321b Intermediate protrusion 322 Oscillation fulcrum part 322a Shoulder 322b Retaining piece 33 Oscillation fulcrum support part 34 Energizing mechanism 10 Band part 101 Engaging / disengaging surface 101a First mountain (Convex shape of engagement / disengagement part)
101b Second mountain (convex shape of engagement / disengagement part)

Claims

バンド部の挿通孔を有する合成樹脂製の頭部内に、前記バンド部よりも硬質の爪をこの爪の先端部が前記挿通孔に臨むように前記挿通孔側への付勢力を付与して配置し、前記爪の前記先端部が前記バンド部の係脱面に食い込みや離脱させることにより前記爪と前記バンド部とが係脱するようにして前記頭部側と前記バンド部側との協働による係脱部を構成した係止具であって、前記係脱部の内、前記頭部側の前記係脱部の前記爪を、この爪の先端部が前記係脱面への食い込み可能な範囲内に配備する一方、前記爪の前記先端部と反対側の部位に揺動支点部分を設け、この揺動支点部分が、前記頭部内で枢支されながら前記バンド部が前記挿通孔に挿通された時には、前記バンド部の挿通方向へ移動するとともに前記係脱面に対して近接する方向に移動し、前記バンド部が挿通方向とは反対方向に戻ろうとした時には前記係脱面に前記爪の前記先端部が食い込みながら前記揺動支点部分が、前記バンド部の反挿通方向へ移動するとともに前記係脱面と離反する方向に移動するように構成したことを特徴とする係止具。In the synthetic resin head having the insertion hole of the band part, a claw harder than the band part is given a biasing force toward the insertion hole side so that the tip part of the claw faces the insertion hole. arrangement, and the tip of the pawl and the pawl and the band portion and said head side so as to disengage said band portion by biting or disengaged disengagement surface of the band portion a locking tool configured disengagement portion by cooperating, among the engaging portion, the pawl of the engaging portion of the head side, the tip portion of the pawl to the engaging surface While being provided within a range where the bite can be provided, a swing fulcrum portion is provided on a portion of the claw opposite to the tip portion, and the swing fulcrum portion is pivotally supported in the head while the band portion is When it is inserted through the insertion hole, it moves in the insertion direction of the band part and is closer to the engagement / disengagement surface When the band portion tries to return to the direction opposite to the insertion direction, the swing fulcrum portion moves in the reverse insertion direction of the band portion while the tip portion of the claw bites into the engagement / disengagement surface. And the latching tool comprised so that it might move in the direction away from the said engagement / disengagement surface .

爪の揺動支点部分の形状を、爪幅を縮幅させて形成した肩部と，この肩部の最縮幅位置から前記爪の先端部と反対側に徐々に拡幅するテーパ状にして延設した抜け止め片とで形成するとともに、頭部内に前記揺動支点部分の支持部分を設け、この揺動支点部分の支持部分の形状を、前記抜け止め片の形状よりも僅かに大きくこの抜け止め片と類似するテーパ形状にして前記爪を前記頭部内に遊嵌したことを特徴とする請求項１記載の係止具。The shape of the swing fulcrum portion of the nail, a shoulder portion formed by the reduced width of the nail width, from the most reduced width position of the shoulder portion is tapered to gradually widening on the side opposite to the tip of the pawl extension and forming by the setting the retaining piece, the supporting portion of the swing fulcrum portion in the head portion is provided, the shape of the supporting portion of the swing fulcrum portion, slightly larger than the shape of the retaining piece this 2. The locking device according to claim 1, wherein the claw is loosely fitted in the head with a taper shape similar to a retaining piece.

爪の先端部の形状を、バンド部の係脱面側への最大突出部と中間突出部とに分けて形成する一方、前記バンド部の前記係脱面の形状が、前記爪の前記最大突出部と対向する前記バンド部の前記係脱面を凸形状に、また前記爪の前記中間突出部と対向する前記バンド部の前記係脱面を前記凸形状の中腹位置になるように形成した請求項１又は請求項２に記載の係止具。The shape of the tip of the nail, while formed divided into a maximum protruding portion and the middle protrusion into disengagement side of the band portion, the shape of the engaging surface of the band portion, the maximum protrusion of the pawl the disengaging surface of the band portion opposite to the part in a convex shape, also claims the disengaging surface of the band portion opposite to the intermediate projection of the pawl is formed so as to middle position of said convex The locking tool according to claim 1 or claim 2.

係脱部を二つ用意して第一係脱部と第二係脱部とにし、前記第一係脱部に対して前記第二係脱部を交差するように配設した請求項１〜３のいずれかに記載した係止具。 The two engaging / disengaging portions are prepared to be a first engaging / disengaging portion and a second engaging / disengaging portion, and the first engaging / disengaging portion is disposed so as to intersect the second engaging / disengaging portion. The locking tool according to any one of 3 above.

係脱部を二つ用意して第一係脱部と第二係脱部とにし、前記第一係脱部に対して前記第二係脱部を並列に配設した請求項１〜３のいずれかに記載した係止具。 The two engaging / disengaging portions are prepared as a first engaging / disengaging portion and a second engaging / disengaging portion, and the second engaging / disengaging portion is arranged in parallel to the first engaging / disengaging portion. The locking tool described in any one.