JP4040871B2

JP4040871B2 - Loose leaf binding tool

Info

Publication number: JP4040871B2
Application number: JP2001389208A
Authority: JP
Inventors: 克己金田
Original assignee: 克己金田
Priority date: 2001-12-21
Filing date: 2001-12-21
Publication date: 2008-01-30
Anticipated expiration: 2021-12-21
Also published as: JP2003182280A

Description

【０００１】
【発明の属する技術分野】
本発明はルースリーフ綴具に関し、特に、薄型で引き手式のルースリーフ綴具に関する。
【０００２】
【従来の技術】
細長い基板と、該基板の一方の側辺に沿って複数個設けた軸受に枢着された軸と、該軸に所定間隔で支持されている基部と該基板の他方の側辺に接離する先端部とを有する複数の綴環と、該綴環を常時開放方向に付勢するばねと、前記綴環を閉鎖状態でロックするためのロック機構とを有するルースリーフ綴具は公知であり、医療用カルテ等の比較的少数枚のルースリーフを綴じるのに適した薄型の綴具である。
このタイプの綴具の綴環を開閉するための手段には、引き手の運動を回転運動に変換して綴環の支持軸に伝えるスライド方式と、ロック付きレバーにより綴環の支持軸を直接回転させるレバー方式がある。レバー方式では綴環の閉鎖時には綴環を直接押すことで綴環を閉じると共に自動的にレバーを綴環の閉鎖位置でロックする。一方、綴環の解放時にはレバーを特定の方向に押してレバーの係止突起を解除すると、ばねの作用で綴環を容易に開放できる利点がある。しかし、ロックは片持ちレバーの弾性によるものであるから外力の作用でロックが外れやすい傾向がある。スライド方式はカム・フォロワー機構により引き手付きの操作板の直線運動を軸の回転運動に変えるもので、綴環を開放するには引き手を引き、閉鎖時には引き手を押す。
【０００３】
【発明が解決しようとする課題】
スライド方式はカム・フォロワー機構により引き手の直線運動を軸の回転運動に変えるので機構が複雑で基板が厚くなり、また綴環の開放時には引き手を引き、また閉鎖時にも引き手を奥まで確実に押さなければ綴環が完全に閉鎖しないので使用者にとって面倒である。またこの押圧力に耐えるだけの剛性がスライド板に要求されるので厚型となる。
本発明はレバー方式の利点とスライド方式の利点を兼ねた、薄型で、操作が簡単で、綴環の開閉が容易で、綴環の閉鎖状態が確実に維持できるスライド式の綴具を提供することを目的とする。
【０００４】
【課題を解決するための手段】
１．本発明は、細長い基板と、該基板の一方の側辺部に枢着された軸と、該軸に所定間隔で支持されている基部と該基板の他方の側辺部に接離する先端部とを有する複数の綴環と、前記基板に形成されていて前記先端部を受け入れる少なくとも２つの開口と、前記綴環を常時開放方向に付勢するねじりばねとを有するルースリーフ綴具において、前記綴環の前記先端部に設けられた鈎部と、前記基板の開口に前記先端部が侵入するときに前記鈎部を係止する位置に設けられた係止突起と、前記基板の底面に長手方向に滑動自在に設けられ長手方向の一端部に操作用の指掛けを備えたロック解除板であって、前記指掛けを引いたときに前記綴環の前記鈎部を前記係止突起から外すように作用する部分を有するロック解除板と、前記ロック解除板を指掛けとは反対の方向に常時偏倚させるばね片と、より構成されていることを特徴とするルースリーフ綴具を提供する。
この構成によると、ロック解除板をばね片の弾性に抗して指掛けを引くことによりロック解除がされて綴環が開放し、一方閉鎖時には単に綴環を指で押すだけで綴環が閉鎖でき且つロックが自動的にかかる。
２．本発明の特徴として、前記ロック解除板を指掛けとは反対の方向に常時偏倚させるばね片は、前記基板の一体的一部から形成された舌片であって前記基板の長手方向を横断する方向に延びてその先端部が前記ロック解除板に結合されている。
【０００５】
３．他の好ましい形態では、前記ロック解除板の前記鈎部を前記係止突起から外すように作用する部分は、前記基板の開口とほぼ重畳する位置において前記ロック解除板に形成された開口の前記指掛けとは反対側の壁面であり、ロック解除板を一端に向けて引いたときにこの壁面が綴環の先端部を押してロックを解除する。
４．さらに他の好ましい形態では、前記指掛け部は前記ロック解除板からの起立部分と、その上部両側から基板の長手方向に対して横方向に突出する肘片とを備え、前記基板の対応した部分には前記起立部分を受け入れる長手方向のガイド溝と前記肘片の下面と滑り接触するガイド面とを有している。
この構成によると、ロック解除板がガイド溝と肘片により円滑に案内されるだけでなくロック解除板が基板底面に密着して保持できるので、薄型のロック解除板を使用でき、全体的に薄型の綴具を構成できる。
５．また他の好ましい形態では、前記ばね片は前記ロック解除板の前記他端に向けて突出する突部を有し、前記ロック解除板の前記他端は前記突部を抱き込む係止部を有しており、さらに好ましくは、前記突部は前記他端側に凹部を有し、前記係止部は前記凹部に嵌合する位置規制突起を有する。
この構成によると、ロック解除板の係止部をばね片の突部に引っかけるだけで組み立てが可能となり、位置規制突起により所定の位置関係を保持することが出来る。
【０００６】
【発明の実施の形態】
以下本発明を図面を参照して詳しく説明する。
図１は本発明の綴具の平面図、図２は底面図、図３は正面図である。図４は上面斜視図、図５は左側面図、及び図６は右側面図である。
本発明のルースリーフ綴具は、細長い基板１と、基板の一方の側辺部に枢着された軸２と、軸２に所定間隔で固定支持されている基部と基板１の他方の側辺部に近接、離間する先端部とを有する複数の綴環４と、基板１に形成されていて綴環の複数の先端部に設けられた鈎部に係合するロック用鈎部を有する複数個の開口８と、前記綴環を常時開放方向に付勢するねじりばね１９と、一部の綴環４の先端部を押して綴環の閉鎖状態でのロックからロックを解除するためのロック解除板３と、解除板３を引っ張るための指掛け部５とからなる。
【０００７】
基板１は複数の軸受け９を片側の縁部に沿って有し、そこに綴環４の基部を支持する軸２を支承している。基板の他側の縁部に沿って綴環４の先端を受ける多数の開口１３と、４個の開口８と、２個の短柱１２を有する。基板の一端には以下に説明するように指掛け部５の操作を可能にする構造を有する。基板の他端部１７にはロック解除板３を常時１７の側に向けて偏倚させるための片持ち式のばね片６が設けてある。基板の裏面にはロック解除板３を案内するための平溝１０が設けられその面には上記の開口８、１３が開口している。従ってロック解除板３は綴環４の先端に対するストッパの作用も有する。ばね片６の先端部はロック解除板３の先端に結合されている。なお２０は基板をバインダー表紙に取り付けるための鋲穴である。
【０００８】
多数の綴環４の基部は強度を上げるために全体的に角形の軸２に一体成形されている。軸の一部は細い円形断面となっていて基板側の軸受け９に支持されている。大部分の綴環４の先端部は、綴環の閉鎖状態では図１のＣ−Ｃ拡大断面図である図９に示したように、基板１の縁端に沿って形成された開口１３の中に入り、ロック解除板３の面に当接している。他の４個の綴環４の先端部は、閉鎖状態では図１のＢ−Ｂ拡大断面図である図８に示したように、基板１から起立する短柱１２の上端に係合している。短柱１２は綴環４が開いている状態でルースリーフが正規の位置から簡単には外れないようにする位置規制用である。残りの４個の綴環４は、綴環の閉鎖状態では図１のＡ−Ａ拡大断面図を示す図７及び図１０の（ａ）および（ｂ）のように示したように、先端部７に鈎部７’を有し、この鈎部７’は基板に形成された開口８の内壁に設けた係止突起８’に係止出来るようになっており、これにより閉鎖時の綴環４のロックを行う。なお、図１０の（ａ）では開口１８の隅部に係止突起８’を形成し、それに対応して綴環側の隅部に鈎部７’を形成したが、（ｂ）のように開口１８の片側（指掛け部５から見て遠い側）に傾斜上面を有する係止突起８’を形成し、それに対応して綴環側の同じ側に広い鈎部７’を形成しても良い。傾斜上面は綴環を閉鎖する際に綴環の自由端を案内するので綴環をロックしやすい。
【０００９】
基板１の底面に長手方向に滑動自在に設けられたロック解除板３は長手方向の一端部に操作用の指掛け部５を備え、指掛け部を引いたときに綴環４の鈎部７’を係止突起８’から外すように作用する部分を有する。ロック解除板３は基板１のガイド用平溝１０に収容され、ロック解除板３の両縁に溝状に設けたガイド１５の面に基板１から突出する押さえ片１４が接触することによりロック解除板３の脱落を防いでいる。ロック解除板３の端部は押さえ片１４より長い切欠き２８が指掛けから見て遠い側に形成されており、組立の際に切欠き２８を押さえ片１４に合わせ、ガイド１５を押さえ片１４の下に潜らせ、ついでばね片６の方向にロック解除板３を滑らせることにより組立を行う。同様な構造はロック解除板の三個所で両側に形成されている。なお、ロック解除板３は薄いため必要以上の力で強く引っ張ると基板１から外れる可能性があるので、図１３のように同じ個所に少なくとも１つの突起２９を設け、ロック解除に必要な限度を超えないように切欠き２８の板ばね片６の側の端壁（ストッパ）３０に停止できるようにすることが好ましい。
ロック解除板３には図２、図７、図１２に示したように開口１８が基板の開口８と整列する位置に形成され、開口１８に延びている綴環４の先端部７を受け入れるようになっており、綴環４の閉鎖時に綴環の鈎部７’が基板１の係止突起８’によりロックされている状態では、ばね片６により先端部７に干渉しない位置に偏倚されており、その偏倚位置は指掛け部５に設けた後で述べる停止部２６により規制されている。鈎部７’を係止突起８’から外すように作用する部分は、開口１８の指掛けとは反対側の壁面であり、ロック解除板を指掛け部５により引いたときにこの壁面が綴環の先端部７を押してロックを解除する。
【００１０】
ロック解除板３を指掛け部５とは反対の方向に常時偏倚させるばね片６は、基板１の一体的一部から形成されたばね片６であって基板の長手方向を横断する方向に延びてその先端部が前記ロック解除板３に結合されている。具体的に述べると図１１の（ａ）のように片持ち式のばね片６の先端部はロック解除板３の他端に向けて突出する一対の突部２３を有し、その間には凹部２５を有する。ロック解除板３の他端は突部２３を抱き込む係止部１６を有しており、さらにロック解除板３はばね片６の凹部２５に嵌合する位置規制突起２４を有する。別法として図１１の（ｂ）のようにロック解除板３の先端部に位置規制突起２４の他に板ばね６の一対の突起２３を受け入れ上から拘束するようにＴ字形の係止部１６’を有しても良い。
【００１１】
指掛け部５の詳細は図１２に示されている。指掛け部５はロック解除板３からの起立部分と、起立部分の両側から基板の長手方向に対して横方向に突出する肘片２２、２２とを備え、基板の対応した部分には前記起立部分を受け入れる長手方向のガイド溝２１と肘片２２、２２の下面と滑り接触するガイド面２０、２０とを有している。ガイド溝２１の長手方向の壁はストッパ面２７を形成している。
この構成によると、指掛け部５の下端部はガイド溝２１に嵌り、肘片２２はガイド面２０により円滑に案内される。またこれによりロック解除板３は基板底面に密着して保持できるので、薄型のロック解除板を使用でき、全体的に薄型の綴具を構成できる。またストッパ面２７は起立部分に係合することにより綴環４の閉鎖状態における開口１８位置を正確に規制するものである。
【００１２】
以上の構成によると、ロック解除板３をばね片６の弾性に抗して指掛け部５を引くことにより綴環４の先端部７がロック解除板３の開口１８の壁面により指掛の方向に押されるので鈎部７’は基板の係止部８’からはずれてロック解除がされ、綴環４が捻りばね１９の作用により開放する。一方、閉鎖時には単に綴環を指で基板上に押し下げるだけで綴環が閉鎖でき且つロックが自動的にかかる。
【００１３】
【発明の効果】
以上のように、本発明は、綴環の先端部に鈎部を設け、基板の開口に該先端部が侵入するときに鈎部を係止する係止突起を設け、これとは別に、指掛けを引いたときに綴環の鈎部を係止突起から外すように作用する部分を有するロック解除板を指掛けとは反対の方向に常時偏倚させるようにしたので、ロック解除板をばね片の弾性に抗して指掛けを引くことによりロック解除がされて綴環が開放し、一方閉鎖時には単に綴環を指で押すだけで綴環が閉鎖でき且つロックが自動的にかかるようにした。このようにすると綴具は基本的に３部材（捻りばねを入れても４部材）のみから構成されるので工程が短縮され、ロック解除板が張力のみに耐えればよいので非常に薄型となる。またロック解除板を指掛けとは反対の方向に常時偏倚させるばね片を、基板の一体的一部から形成された舌片により構成したので部品点数を減少できる。ロック解除板は常時ロックを阻害しない方向にばね偏倚されているので、ロック部は振動等の衝撃にも十分に耐え、指掛けを十分に引いたときにのみ綴環が開放できるのでロックが外れるおそれが減じる。さらに、指掛け部をロック解除板からの起立部分と、その両側から基板の長手方向に対して横方向に突出する肘片とを備え、前記基板の対応した部分には前記起立部分を受け入れる長手方向のガイド溝と前記肘片の下面と滑り接触するガイド面を設けたので、薄いロック解除板が基板面にしっかりと保持でき、またロック解除板がガイド溝と肘片により円滑に案内される。さらに、ばね片にロック解除板の他端に向けて突出する突部を設け、ロック解除板の他端は突部を抱き込む係止部を有しており、突部は他端側に凹部を有し、係止部は前記凹部に嵌合する位置規制突起を有するので、ロック解除板の係止部をばね片の突部に引っかけるだけで組み立てが可能となり、位置規制突起により所定の位置関係を保持することが出来る。
【図面の簡単な説明】
【図１】本発明の綴具の平面図である。
【図２】本発明の綴具の底面図である。
【図３】本発明の綴具の正面図である。
【図４】本発明の綴具の上面斜視図である。
【図５】本発明の綴具の左側面図である。
【図６】本発明の綴具の右側面図である。
【図７】図１のＡ−Ａ拡大断面図である。
【図８】図１のＢ−Ｂ拡大断面図である。
【図９】図１のＣ−Ｃ拡大断面図である。
【図１０】ロック部分の拡大斜視図で、（ａ）及び（ｂ）は異なった実施例を示す。
【図１１】ロック解除板と、ばね片の結合部分を示す分解斜視図で、（ａ）及び（ｂ）は異なった実施例を示す。
【図１２】指掛け部の係止部分の分解斜視図である。
【図１３】ストッパ部分を示す底面図である。
【符号の説明】
１細長い基板
２軸
３ロック解除板
４綴環
５指掛け部
６ばね片
７先端部
７’ 鈎部
８、１３、１８開口
８’ 係止突起
９軸受け
１０平溝
１２短柱
１４押さえ片
１６係止部
１７他端部
１９捻りばね
２０ガイド面
２１ガイド溝
２２肘片
２３突部
２４突起
２５凹部
２７ストッパ面
２８切欠き
２９突起
３０ストッパ用端壁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a loose-leaf binding device, and more particularly to a thin and pull-type loose-leaf binding device.
[0002]
[Prior art]
An elongated substrate, a shaft pivotally attached to a plurality of bearings along one side of the substrate, a base supported on the shaft at a predetermined interval, and the other side of the substrate A loose-leaf binding device having a plurality of binding rings having tip portions, a spring that constantly biases the binding rings in the opening direction, and a lock mechanism for locking the binding rings in a closed state is known, A thin binding tool suitable for binding a relatively small number of loose leaves such as medical charts.
The means for opening and closing the ring of this type of binding tool includes a slide system that converts the movement of the puller to a rotational movement and transmits it to the support shaft of the binding ring, and the support shaft of the binding ring directly by a lever with a lock. There is a lever system to rotate. In the lever system, when the binding ring is closed, the binding ring is closed by pushing the binding ring directly and the lever is automatically locked at the closing position of the binding ring. On the other hand, when releasing the binding ring, if the lever is pushed in a specific direction to release the locking projection of the lever, there is an advantage that the binding ring can be easily opened by the action of the spring. However, since the lock is due to the elasticity of the cantilever lever, the lock tends to be released by the action of an external force. The slide method is a cam follower mechanism that changes the linear motion of the operating plate with a handle to a rotational motion of the shaft. Pull the pull to open the binding ring and push the pull when closed.
[0003]
[Problems to be solved by the invention]
The slide system changes the linear motion of the puller to the rotational movement of the shaft by the cam follower mechanism, so the mechanism is complicated and the board becomes thick, pulls the puller when the binding ring is opened, and pulls the puller to the back even when closed If it is not pushed securely, the ring is not completely closed, which is troublesome for the user. Further, since the slide plate is required to have enough rigidity to withstand this pressing force, it becomes a thick type.
The present invention provides a slide-type binding device that combines the advantages of the lever method and the slide method, is thin, easy to operate, easily opens and closes the binding ring, and can reliably maintain the closed state of the binding ring. For the purpose.
[0004]
[Means for Solving the Problems]
1. The present invention relates to an elongated substrate, a shaft pivotally attached to one side portion of the substrate, a base portion supported by the shaft at a predetermined interval, and a tip portion contacting and separating from the other side portion of the substrate A loose-leaf binding device comprising: a plurality of binding rings including: at least two openings formed in the substrate for receiving the tip portion; and a torsion spring that constantly biases the binding ring in an opening direction. A collar provided at the tip of the binding ring, a locking projection provided at a position for locking the collar when the tip enters the opening of the substrate, and a long side at the bottom of the substrate An unlocking plate that is slidable in the direction and is provided with a finger hook for operation at one end in the longitudinal direction so that when the finger hook is pulled, the collar portion of the binding ring is removed from the locking projection. A lock release plate having a portion to act on, and a finger Only the offers and the spring piece biasing always in the opposite direction, a loose leaf binding device, characterized in that it is more configurations.
According to this configuration, the lock release plate is unlocked by pulling the finger rest against the elasticity of the spring piece to release the ring, and when closing, the ring can be closed simply by pushing the ring with a finger. And the lock is automatically applied.
2. As a feature of the present invention, the spring piece that always biases the unlocking plate in the direction opposite to the finger hook is a tongue piece formed from an integral part of the substrate, and a direction transverse to the longitudinal direction of the substrate. And a tip end portion thereof is coupled to the lock release plate.
[0005]
3. In another preferred embodiment, the portion of the unlocking plate that acts to remove the flange from the locking projection is the finger hook of the opening formed in the unlocking plate at a position that substantially overlaps the opening of the substrate. Is the opposite wall surface, and when the unlocking plate is pulled toward one end, the wall surface pushes the tip of the binding ring to release the lock.
4). In still another preferred form, the finger-hanging portion includes an upstanding portion from the unlocking plate and an elbow piece projecting laterally with respect to the longitudinal direction of the substrate from both sides of the upper portion, and a corresponding portion of the substrate. Has a longitudinal guide groove for receiving the upstanding portion and a guide surface in sliding contact with the lower surface of the elbow piece.
According to this configuration, the unlocking plate is not only smoothly guided by the guide groove and the elbow piece, but also the unlocking plate can be held in close contact with the bottom surface of the substrate, so that a thin unlocking plate can be used, and the overall thinness is achieved. Can be configured.
5. In another preferred embodiment, the spring piece has a protrusion that protrudes toward the other end of the unlocking plate, and the other end of the lock releasing plate has a locking portion that embraces the protrusion. More preferably, the protrusion has a recess on the other end side, and the locking portion has a position restricting protrusion that fits into the recess.
According to this configuration, the assembly can be performed only by hooking the locking portion of the lock release plate to the protrusion of the spring piece, and the predetermined positional relationship can be maintained by the position restricting protrusion.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
1 is a plan view of the binding device of the present invention, FIG. 2 is a bottom view, and FIG. 3 is a front view. 4 is a top perspective view, FIG. 5 is a left side view, and FIG. 6 is a right side view.
The loose-leaf binding device of the present invention includes an elongated substrate 1, a shaft 2 pivotally attached to one side of the substrate, a base fixedly supported on the shaft 2 at a predetermined interval, and the other side of the substrate 1. A plurality of binding rings 4 having tip portions that are close to and away from the portion, and a plurality of locking collar portions that are formed on the substrate 1 and engage with collar portions provided at the plurality of tip portions of the binding ring. , The torsion spring 19 that constantly urges the binding ring in the opening direction, and the unlocking plate for releasing the lock from the lock in the closed state of the binding ring by pushing the tip of a part of the binding ring 4 3 and a finger hooking portion 5 for pulling the release plate 3.
[0007]
The substrate 1 has a plurality of bearings 9 along the edge on one side, and supports the shaft 2 that supports the base of the binding ring 4 there. It has a large number of openings 13 that receive the tips of the binding ring 4 along the edge on the other side of the substrate, four openings 8, and two short columns 12. One end of the substrate has a structure that enables operation of the finger rest 5 as described below. The other end portion 17 of the substrate is provided with a cantilevered spring piece 6 for biasing the unlocking plate 3 toward the side 17 at all times. A flat groove 10 for guiding the lock release plate 3 is provided on the back surface of the substrate, and the openings 8 and 13 are opened on the surface. Accordingly, the lock release plate 3 also has a stopper action on the tip of the binding ring 4. The tip of the spring piece 6 is coupled to the tip of the lock release plate 3. Reference numeral 20 denotes a hole for attaching the substrate to the binder cover.
[0008]
The bases of the numerous ring 4 are integrally formed on the square shaft 2 as a whole in order to increase the strength. A part of the shaft has a thin circular cross section and is supported by a bearing 9 on the substrate side. As shown in FIG. 9, which is an enlarged sectional view taken along the line CC of FIG. 1 in the closed state of the ring, the tip of most of the ring 4 is the opening 13 formed along the edge of the substrate 1. It enters inside and abuts against the surface of the lock release plate 3. In the closed state, the tip ends of the other four binding rings 4 are engaged with the upper ends of the short columns 12 rising from the substrate 1 as shown in FIG. Yes. The short column 12 is used for restricting the position so that the loose leaf cannot be easily detached from the normal position in a state where the binding ring 4 is open. As shown in FIGS. 7 and 10 (a) and 10 (b) showing the AA enlarged sectional view of FIG. 7 has a flange portion 7 ', and this flange portion 7' can be locked to a locking projection 8 'provided on the inner wall of the opening 8 formed on the substrate. 4 is locked. In FIG. 10 (a), the locking projections 8 ′ are formed at the corners of the opening 18 and the collars 7 ′ are formed at the corners on the binding ring side correspondingly, but as shown in FIG. A locking projection 8 ′ having an inclined upper surface may be formed on one side of the opening 18 (the side far from the finger-hanging portion 5), and a wide collar portion 7 ′ may be formed on the same side of the binding ring. . Since the inclined upper surface guides the free end of the binding ring when closing the binding ring, it is easy to lock the binding ring.
[0009]
The unlocking plate 3 provided on the bottom surface of the substrate 1 so as to be slidable in the longitudinal direction is provided with a finger hooking portion 5 for operation at one end portion in the longitudinal direction. It has a part which acts so that it may remove from latching protrusion 8 '. The unlocking plate 3 is accommodated in the guide flat groove 10 of the substrate 1, and the unlocking is performed by the pressing pieces 14 protruding from the substrate 1 coming into contact with the surfaces of the guide 15 provided in the groove shape on both edges of the unlocking plate 3. The plate 3 is prevented from falling off. At the end of the lock release plate 3, a notch 28 longer than the pressing piece 14 is formed on the side far from the finger hook. When assembling, the notch 28 is aligned with the holding piece 14, and the guide 15 is fixed to the holding piece 14. Assembling is performed by submerging and then sliding the unlocking plate 3 in the direction of the spring piece 6. A similar structure is formed on both sides at three locations of the unlocking plate. Since the lock release plate 3 is thin, there is a possibility that the lock release plate 3 may come off the substrate 1 if it is pulled strongly with an excessive force. Therefore, at least one protrusion 29 is provided at the same location as shown in FIG. It is preferable to be able to stop at the end wall (stopper) 30 on the side of the leaf spring piece 6 of the notch 28 so as not to exceed.
As shown in FIGS. 2, 7, and 12, the unlocking plate 3 is formed with an opening 18 at a position aligned with the opening 8 of the substrate so as to receive the tip 7 of the binding ring 4 extending to the opening 18. In the state in which the collar portion 7 ′ of the binding ring is locked by the locking projection 8 ′ of the substrate 1 when the binding ring 4 is closed, the spring piece 6 is biased to a position that does not interfere with the tip end portion 7. The bias position is regulated by a stop portion 26 which will be described later after being provided on the finger rest portion 5. The portion that acts to remove the collar portion 7 ′ from the locking projection 8 ′ is the wall surface opposite to the finger hook of the opening 18, and when the lock release plate is pulled by the finger hook portion 5, this wall surface is the ring ring. Push the tip 7 to release the lock.
[0010]
A spring piece 6 that always biases the unlocking plate 3 in a direction opposite to the finger-hanging portion 5 is a spring piece 6 formed from an integral part of the substrate 1 and extends in a direction transverse to the longitudinal direction of the substrate. The tip is coupled to the lock release plate 3. Specifically, as shown in FIG. 11A, the tip of the cantilevered spring piece 6 has a pair of protrusions 23 that protrude toward the other end of the lock release plate 3, and a recess between them. 25. The other end of the lock release plate 3 has a locking portion 16 that embraces the protrusion 23, and the lock release plate 3 further has a position restricting projection 24 that fits into the recess 25 of the spring piece 6. Alternatively, as shown in FIG. 11B, a pair of protrusions 23 of the leaf spring 6 are received and restrained from the top in addition to the position restricting protrusions 24 at the tip of the unlocking plate 3 so as to be restrained from above. You may have '.
[0011]
Details of the finger rest 5 are shown in FIG. The finger-hanging portion 5 includes an upstanding portion from the unlocking plate 3 and elbow pieces 22 and 22 projecting laterally with respect to the longitudinal direction of the substrate from both sides of the upstanding portion. And guide surfaces 20 and 20 which are in sliding contact with the lower surfaces of the elbow pieces 22 and 22. A wall in the longitudinal direction of the guide groove 21 forms a stopper surface 27.
According to this configuration, the lower end portion of the finger rest portion 5 is fitted into the guide groove 21, and the elbow piece 22 is smoothly guided by the guide surface 20. Further, since the lock release plate 3 can be held in close contact with the bottom surface of the substrate, a thin lock release plate can be used, and a thin binding device can be formed as a whole. Further, the stopper surface 27 accurately regulates the position of the opening 18 in the closed state of the binding ring 4 by engaging with the standing portion.
[0012]
According to the above configuration, when the lock release plate 3 is pulled against the elasticity of the spring piece 6 and the finger hook portion 5 is pulled, the distal end portion 7 of the binding ring 4 is moved in the finger hook direction by the wall surface of the opening 18 of the lock release plate 3. Since it is pushed, the collar portion 7 ′ is released from the locking portion 8 ′ of the substrate and unlocked, and the binding ring 4 is opened by the action of the torsion spring 19. On the other hand, at the time of closing, the ring can be closed and locked automatically by simply pressing the ring onto the substrate with a finger.
[0013]
【The invention's effect】
As described above, according to the present invention, the hook is provided at the tip of the binding ring, and the locking projection for locking the hook when the tip enters the opening of the substrate. The lock release plate is always biased in the direction opposite to the finger hook, so that the lock release plate has the elasticity of the spring piece. The lock is released by pulling the finger hook against the opening and the ring is opened. On the other hand, when the ring is closed, the ring can be closed simply by pushing the ring with a finger and the lock is automatically applied. In this case, the binding tool is basically composed of only three members (four members even if a torsion spring is inserted), so that the process is shortened and the lock release plate only needs to withstand the tension, so that it becomes very thin. Moreover, since the spring piece that always biases the lock release plate in the direction opposite to the finger hook is formed by a tongue piece formed from an integral part of the substrate, the number of parts can be reduced. The lock release plate is spring biased in a direction that does not obstruct the lock at all times, so the lock part can withstand shocks such as vibration and the lock ring can be released only when the finger hook is fully pulled, so the lock may be released Is reduced. Furthermore, the finger-hanging portion is provided with a standing portion from the unlocking plate and an elbow piece projecting laterally with respect to the longitudinal direction of the substrate from both sides thereof, and a longitudinal direction for receiving the standing portion at a corresponding portion of the substrate Since the guide surface is provided in sliding contact with the guide groove and the lower surface of the elbow piece, the thin lock release plate can be firmly held on the substrate surface, and the lock release plate is smoothly guided by the guide groove and the elbow piece. Further, the spring piece is provided with a protrusion protruding toward the other end of the lock release plate, the other end of the lock release plate has a latching portion for embedding the protrusion, and the protrusion is a recess on the other end side. And the locking portion has a position restricting projection that fits into the recess, so that it can be assembled simply by hooking the locking portion of the unlocking plate to the protruding portion of the spring piece. Relationships can be maintained.
[Brief description of the drawings]
FIG. 1 is a plan view of a binding device of the present invention.
FIG. 2 is a bottom view of the binding device of the present invention.
FIG. 3 is a front view of the binding device of the present invention.
FIG. 4 is a top perspective view of the binding device of the present invention.
FIG. 5 is a left side view of the binding device of the present invention.
FIG. 6 is a right side view of the binding device of the present invention.
7 is an AA enlarged cross-sectional view of FIG. 1. FIG.
FIG. 8 is an enlarged cross-sectional view taken along the line BB of FIG.
FIG. 9 is an enlarged cross-sectional view taken along the line CC in FIG. 1;
FIGS. 10A and 10B are enlarged perspective views of a lock portion, and FIGS. 10A and 10B show different embodiments. FIGS.
FIGS. 11A and 11B are exploded perspective views showing a coupling portion between a lock release plate and a spring piece, and FIGS. 11A and 11B show different embodiments. FIGS.
FIG. 12 is an exploded perspective view of a locking portion of a finger hook portion.
FIG. 13 is a bottom view showing a stopper portion.
[Explanation of symbols]
1 Elongated substrate 2 axes
3 lock release plate 4 binding ring 5 finger hook 6 spring piece 7 tip 7 'collar 8, 13, 18 opening 8' locking projection 9 bearing 10 flat groove 12 short column 14 pressing piece 16 locking portion 17 other end DESCRIPTION OF SYMBOLS 19 Torsion spring 20 Guide surface 21 Guide groove 22 Elbow piece 23 Projection 24 Projection 25 Recess 27 Stopper surface 28 Notch 29 Projection 30 End wall for stopper

Claims

An elongated substrate (1), a shaft (2) pivotally attached to one side of the substrate, a base supported on the shaft at a predetermined interval, and the other side of the substrate. A plurality of binding rings (4) having tip portions, at least two openings (8) formed in the substrate and receiving the tip portions, and a torsion spring (19) for constantly biasing the binding rings in the opening direction In the loose-leaf binding device having the above-mentioned), when the tip portion (7) enters the flange portion (7 ') provided at the tip portion (7) of the binding ring and the opening (8) of the substrate. An unlocking protrusion (8 ') provided at a position for locking the collar portion, and an operation finger hook at one end in the longitudinal direction provided on the bottom surface of the substrate so as to be slidable in the longitudinal direction. When the finger hook is pulled, the hook part (7 ′) of the binding ring is removed from the locking projection (8 ′). Unlocking plate having a portion which serves to remove the (3), a spring piece (6) for biasing constantly in a direction opposite to the finger hooking the unlocking plate, the Lulu Surifu binding device is more configurations,
A spring piece (6) that constantly biases the unlocking plate in a direction opposite to the finger hook is formed from an integral part of the substrate and extends in a direction transverse to the longitudinal direction of the substrate, and has a tip portion thereof. A binding device coupled to the unlocking plate (3) .

The portion of the unlocking plate that acts to remove the flange (7 ′) from the locking projection (8 ′) is formed on the unlocking plate at a position that substantially overlaps the opening (8) of the substrate. The binding device according to claim 1, wherein the opening is a wall surface on the opposite side of the finger hook.

The finger hook portion (5) includes an upstanding portion from the unlocking plate and an elbow piece projecting laterally with respect to the longitudinal direction of the substrate from both sides on the upper surface of the substrate. The binding device according to any one of claims 1 and 2 , further comprising a guide groove in a longitudinal direction for receiving the portion and a guide surface in sliding contact with a lower surface of the elbow piece.

The spring piece (6) has a protrusion (23) projecting toward the other end of the unlocking plate (3), and the other end of the unlocking plate is a latching part for embedding the protrusion. The binding device according to claim 1, comprising (16).

The binding device according to claim 4, wherein the protrusion (23) has a recess (25) on the other end side, and the locking portion (16) has a position restricting protrusion (24) that fits into the recess. .

The binding device according to claim 1 , wherein the locking protrusion (8 ') is formed at an edge of the opening (8) opposite to the finger-hanging portion and has an inclined upper surface.