本発明の一実施形態を、図面を参照して説明する。図１ないし図２０に示す本実施形態の綴じ具０は、開閉可能な複数本の綴じ桿１２、２２を備えたリング綴じ具である。綴じ桿１２、２２は、予め紙葉類Ｓに穿たれている綴じ孔に挿通されて、紙葉類Ｓを綴じ止める。特に、図１に示しているように、ノートの中紙となる複数枚のリーフやクリアブックのリフィル（さらには、表表紙や裏表紙）等Ｓを綴じることで、リングノートとしての用途に供することができる。このリングノートは、ページを１８０°の角度に開いた見開き状態とすることが可能である。
An embodiment of the present invention will be described with reference to the drawings. The binding tool 0 of the present embodiment shown in FIGS. 1 to 20 is a ring binding tool including a plurality of binding rods 12 and 22 that can be opened and closed. The binding rods 12 and 22 are inserted into the binding holes previously drilled in the paper leaves S to bind the paper leaves S. In particular, as shown in FIG. 1, by binding S such as multiple leaves that are the inner paper of a notebook and refills of a clear book (furthermore, front and back covers), it can be used as a ring notebook. be able to. This ring note can be spread out with the page open at an angle of 180 °.
本実施形態の綴じ具０は、互いに相対的に回動する第一の綴じ桿部材１及び第二の綴じ桿部材２と、両綴じ桿部材１、２が支持する綴じ桿の開放状態／閉止状態を切り替えるために操作される操作部材３と、操作部材３を弾性付勢する弾性付勢部材たるコイルばね４とを構成部材とする。
In the binding tool 0 of the present embodiment, the first binding rod member 1 and the second binding rod member 2 that rotate relative to each other, and the binding rods supported by both binding rod members 1 and 2 are in an open state / closed state. The operating member 3 operated to switch the state and the coil spring 4 which is an elastic urging member for elastically urging the operating member 3 are constituent members.
第一の綴じ桿部材１の形状と第二の綴じ桿部材２の形状とは相似している。第一の綴じ桿部材１は、軸心方向に対して平行に長尺な棒状の基体１１と、基体１１から伸び出した綴じ桿要素１２と、基体１１から離間し当該綴じ桿部材１の回転中心となる軸体１３と、この軸体１３を基体１１に連接する腕部１４とを備える。本実施形態では、これら基体１１、綴じ桿要素１２、軸体１３及び腕部１４を樹脂一体成形している。
The shape of the first binding rod member 1 and the shape of the second binding rod member 2 are similar to each other. The first binding rod member 1 is a rod-shaped base 11 parallel to the axial direction, a binding rod element 12 extending from the base 11, and a rotation of the binding rod member 1 separated from the base 11. A shaft body 13 as a center and an arm portion 14 connecting the shaft body 13 to the substrate 11 are provided. In the present embodiment, the substrate 11, the binding rod element 12, the shaft body 13, and the arm portion 14 are integrally molded with resin.
綴じ桿要素１２は多数本存在し、それらが軸心方向に沿って立ち並んでいる。個々の綴じ桿要素１２は、基体１１の外側面１１２から軸心方向に対して垂直な外側方に一旦直進して突き出し、その外方端から円弧または楕円弧を描くように湾曲して立ち上がっている。綴じ桿要素１２の基端部の直進部分の上面は、基体１１の頂面１１３と略面一である。また、綴じ桿要素１２の先端部は、相手方である第二の綴じ桿部材２の綴じ桿要素２２に向かうように直線的に伸びている。その伸長方向は、基体１１、２１の頂面１１３、２１３に対して略平行である。綴じ桿要素１２の湾曲部分の断面は、軸心方向に少しく拡張した扁平な形状、略長円状または略角丸四角状をなす。綴じ桿要素１２の先端部は、合决りの如く切り欠いてある。
There are a large number of binding rod elements 12, and they are lined up along the axial direction. The individual binding rod elements 12 once straight forward and protrude from the outer surface 112 of the substrate 11 in the outward direction perpendicular to the axial direction, and then rise from the outer end in a curved manner so as to draw an arc or an elliptical arc. .. The upper surface of the straight portion of the base end portion of the binding rod element 12 is substantially flush with the top surface 113 of the substrate 11. Further, the tip end portion of the binding rod element 12 extends linearly toward the binding rod element 22 of the second binding rod member 2 which is the other party. The extending direction thereof is substantially parallel to the top surfaces 113 and 213 of the substrates 11 and 21. The cross section of the curved portion of the binding rod element 12 has a flat shape slightly expanded in the axial direction, a substantially oval shape, or a substantially rounded square shape. The tip of the binding rod element 12 is cut out like a tie.
軸体１３は、全体的には略円柱状の外形をなし、軸心方向に沿って伸長している。但し、詳しくは後述するが、軸体１３にはその一部を切り欠いた部位が存在する。軸体１３は、複数（図示例では、綴じ桿要素１２の本数の約半数）に分かたれている。そして、綴じ桿部材１の軸心方向に沿った中間部を除き、それら軸体１３が同心軸上に所定の間隙を隔てて並んでいる。軸体１３は、その軸心が基体１１の内側面１１１と略同一平面上にあるように、基体１１からやや内側方に偏倚している。
The shaft body 13 has a substantially columnar outer shape as a whole, and extends along the axial center direction. However, as will be described in detail later, the shaft body 13 has a portion cut out thereof. The shaft body 13 is divided into a plurality of parts (in the illustrated example, about half of the number of the binding rod elements 12). Then, except for the intermediate portion along the axial direction of the binding rod member 1, the axial bodies 13 are arranged on the concentric axis with a predetermined gap. The shaft body 13 is slightly inwardly offset from the base 11 so that its axis is substantially in the same plane as the inner side surface 111 of the base 11.
軸体１３の一端面には凹部１３１を、他端面には凸部１３２を、それぞれ形成している。凸部１３２は、軸体１３の軸心に重なる半球状の突起である。凹部１３１は、軸体１３の軸心位置から外側方に延びて軸体１３の外周にまで達した、即ち外側方に開口した凹溝であって、その内面は縦断面視（軸心方向と平行な面で切った断面視、または外側面視）凸部１３２、２３２の径と同等の径の半円筒状をなしており、その溝幅も凸部１３２、２３２の径に略等しい。さらには、凹部１３１の内方端縁もまた、横断面視（軸心方向と直交する面で切った断面視、または軸心方向から見て）凸部１３２、２３２の径と同等の径の半円弧状となっている。
A concave portion 131 is formed on one end surface of the shaft body 13, and a convex portion 132 is formed on the other end surface. The convex portion 132 is a hemispherical protrusion that overlaps the axial center of the shaft body 13. The recess 131 is a concave groove extending outward from the axial center position of the shaft body 13 and reaching the outer periphery of the shaft body 13, that is, a concave groove opened outward, and the inner surface thereof is a vertical cross-sectional view (with the axial center direction). It has a semi-cylindrical shape with a diameter equivalent to the diameter of the convex portions 132 and 232, and the groove width thereof is also substantially equal to the diameter of the convex portions 132 and 232. Furthermore, the inner edge of the recess 131 also has a diameter equivalent to the diameter of the convex portions 132 and 232 in a cross-sectional view (cross-sectional view cut at a plane orthogonal to the axial direction or when viewed from the axial direction). It has a semicircular arc shape.
腕部１４は、一つの軸体１３について二つ存在し、軸体１３の軸心方向に沿った両端部をそれぞれ基体１１に接合している。腕部１４における、基体１１の内側面１１１に連なる内方の側面１４１は、基体１１の内側面１１１に対して傾斜している。他方、腕部１４における、基体１１の外側面１１２に連なる外方の側面１４２は、基体１１の外側面１１２と略面一である。加えて、各腕部１４の外方の下面における、軸心方向に沿って他端側に、基体１１の底面１１４よりも若干ながら下方に突出する突出部１４３を成形している。この腕部１４の外方の突出部１４３は、図５等に示しているように、軸心方向に沿った両端縁が外側面視Ｒをとったような曲面状となっている。
There are two arm portions 14 for one shaft body 13, and both end portions of the shaft body 13 along the axial center direction are joined to the substrate 11, respectively. The inner side surface 141 of the arm portion 14 connected to the inner side surface 111 of the base 11 is inclined with respect to the inner side surface 111 of the base 11. On the other hand, the outer side surface 142 of the arm portion 14 connected to the outer surface 112 of the base 11 is substantially flush with the outer surface 112 of the base 11. In addition, a protruding portion 143 is formed on the outer lower surface of each arm portion 14 on the other end side along the axial direction so as to slightly protrude downward from the bottom surface 114 of the substrate 11. As shown in FIG. 5 and the like, the outer protruding portion 143 of the arm portion 14 has a curved surface shape such that both end edges along the axial direction have an outer view R.
基体１１は、ちょうど角棒の内側面１１１と底面１１４とに跨るように凹曲面１１５を成形した横断面形状を有している。この凹曲面１１５により、基体１１と軸体１３との狭間にある、腕部１４の対に挟まれた領域には、横断面視軸心回りの円環をなすようなスリット状の空隙１５が形成される。加えて、基体１１における、複数の軸体１３の間隙に臨む部位では、内側面１１１と凹曲面１１５とが交わる隅角を面取りしている。
The substrate 11 has a cross-sectional shape in which a concave curved surface 115 is formed so as to straddle the inner side surface 111 and the bottom surface 114 of the square bar. Due to the concave curved surface 115, a slit-shaped void 15 forming a ring around the center of the cross-sectional view axis is formed in the region between the base 11 and the shaft body 13 sandwiched between the pairs of the arm portions 14. It is formed. In addition, at the portion of the substrate 11 facing the gap between the plurality of shaft bodies 13, the corner angle at which the inner side surface 111 and the concave curved surface 115 intersect is chamfered.
基体１１の内側面１１１と一端側の端面との隅角１１６は、その側面が軸心方向に対して交差する方向を向くように面取りまたは丸面取りしてある。
The corner angle 116 between the inner side surface 111 of the substrate 11 and the end surface on one end side is chamfered or rounded so that the side surfaces intersect with each other in the axial direction.
第二の綴じ桿部材２は、第一の綴じ桿部材１側の基体１１と同等に長尺な棒状の基体２１と、基体２１から伸び出した綴じ桿要素２２と、基体２１から離間し当該綴じ桿部材２の回転中心となる軸体２３と、この軸体２３を基体２１に連接する腕部２４とを備える。そして、やはりこれら基体２１、綴じ桿要素２２、軸体２３及び腕部２４を樹脂一体成形している。
The second binding rod member 2 is separated from the base 21 by the rod-shaped base 21 which is as long as the base 11 on the side of the first binding rod member 1 and the binding rod element 22 extending from the base 21. A shaft body 23 that is the center of rotation of the binding rod member 2 and an arm portion 24 that connects the shaft body 23 to the substrate 21 are provided. The substrate 21, the binding rod element 22, the shaft body 23, and the arm portion 24 are integrally molded with resin.
綴じ桿要素２２は、第一の綴じ桿部材１側の綴じ桿要素１２と対をなして環状の綴じ桿を構成する。各綴じ桿要素２２は、基体２１の外側面２１２から軸心方向に対して垂直な外側方に一旦直進して突き出し、その外方端から円弧または楕円弧を描くように湾曲して立ち上がっている。綴じ桿要素２２の基端部の直進部分の上面は、基体２１の頂面２１３と略面一である。また、綴じ桿要素２２の先端部は、相手方である第一の綴じ桿部材１の綴じ桿要素１２に向かうように直線的に伸びている。その伸長方向は、基体１１、２１の頂面１１３、２１３に対して略平行である。綴じ桿要素２２の湾曲部分の断面は、軸心方向に少しく拡張した扁平な形状、略長円状または略角丸四角状をなす。綴じ桿要素２２の先端部は、合决りの如く切り欠いてある。
The binding rod element 22 is paired with the binding rod element 12 on the first binding rod member 1 side to form an annular binding rod. Each binding rod element 22 once straights out from the outer surface 212 of the substrate 21 in the outward direction perpendicular to the axial direction, and rises from the outer end in a curved manner so as to draw an arc or an elliptical arc. The upper surface of the straight portion of the base end portion of the binding rod element 22 is substantially flush with the top surface 213 of the substrate 21. Further, the tip end portion of the binding rod element 22 extends linearly toward the binding rod element 12 of the first binding rod member 1 which is the other party. The extending direction thereof is substantially parallel to the top surfaces 113 and 213 of the substrates 11 and 21. The cross section of the curved portion of the binding rod element 22 has a flat shape slightly expanded in the axial direction, a substantially oval shape, or a substantially rounded square shape. The tip of the binding rod element 22 is cut out like a tie.
軸体２３は、全体的には第一の綴じ桿部材１側の軸体１３と同径の略円筒状の外形をなしており、軸心方向に沿って伸長している。但し、後述するように、軸体２３にはその一部を切り欠いた部位が存在する。軸体２３は複数に分かたれており、綴じ桿部材２の軸心方向に沿った中間部を除き、それらが同心軸上に所定の間隙を隔てて並んでいる。これら軸体２３は、第一の綴じ桿部材１側の複数の軸体１３の間隙に収まるように配設してある。第二の綴じ桿部材２側の軸体２３の軸心方向寸法は第一の綴じ桿部材１側の軸体１３の間隙のそれに略等しく、第一の綴じ桿部材１側の軸体１３の軸心方向寸法は第二の綴じ桿部材２側の軸体２３の間隙のそれに略等しい。軸体２３は、その軸心が基体２１の内側面２１１と略同一平面上にあるように、基体２１からやや内側方に偏倚している。
The shaft body 23 has a substantially cylindrical outer shape having the same diameter as the shaft body 13 on the first binding rod member 1 side as a whole, and extends along the axial center direction. However, as will be described later, the shaft body 23 has a portion cut out thereof. The shaft body 23 is divided into a plurality of parts, and they are arranged on the concentric shaft with a predetermined gap apart from each other except for the intermediate portion along the axial direction of the binding rod member 2. These shaft bodies 23 are arranged so as to fit in the gaps between the plurality of shaft bodies 13 on the side of the first binding rod member 1. The axial dimension of the shaft body 23 on the second binding rod member 2 side is substantially equal to that of the gap of the shaft body 13 on the first binding rod member 1 side, and the shaft body 13 on the first binding rod member 1 side. The axial dimension is substantially equal to that of the gap of the shaft body 23 on the second binding rod member 2 side. The shaft body 23 is slightly inwardly offset from the base 21 so that its axis is substantially in the same plane as the inner side surface 211 of the base 21.
軸体２３の一端面には凹部２３１を、他端面には凸部２３２を、それぞれ形成している。凹部２３１は、第一の綴じ桿部材１側の軸体１３の凸部１３２を収容する。逆に、凸部２３２は、第一の綴じ桿部材１側の軸体１３の凹部１３１に挿入する。凸部２３２は、軸体２３の軸心に重なる半球状の突起である。凹部２３１は、軸体２３の軸心位置から外側方に延びて軸体２３の外周にまで達した凹溝であって、その内面は縦断面視凸部１３２、２３２の径と同等の径の半円筒状をなしており、その溝幅も凸部１３２、２３２の径に略等しい。凹部２３１の内方端縁もまた、横断面視凸部１３２、２３２の径と同等の径の半円弧状となっている。
A concave portion 231 is formed on one end surface of the shaft body 23, and a convex portion 232 is formed on the other end surface. The concave portion 231 accommodates the convex portion 132 of the shaft body 13 on the first binding rod member 1 side. On the contrary, the convex portion 232 is inserted into the concave portion 131 of the shaft body 13 on the first binding rod member 1 side. The convex portion 232 is a hemispherical protrusion that overlaps the axial center of the shaft body 23. The concave portion 231 is a concave groove extending outward from the axial center position of the shaft body 23 and reaching the outer periphery of the shaft body 23, and the inner surface thereof has a diameter equivalent to the diameter of the convex portions 132 and 232 in the vertical cross section. It has a semi-cylindrical shape, and its groove width is substantially equal to the diameter of the convex portions 132 and 232. The inner edge of the recess 231 also has a semicircular shape having a diameter equivalent to that of the convex portions 132 and 232 in the cross-sectional view.
腕部２４は、軸体２３の軸心方向に沿った両端部をそれぞれ基体２１に接合している。腕部２４における、基体２１の内側面２１１に連なる内方の側面２４１は、基体２１の内側面２１１に対して傾斜している。他方、腕部２４における、基体２１の外側面２１２に連なる外方の側面２４２は、基体２１の外側面２１２と略面一である。加えて、各腕部２４の外方の下面における、軸心方向に沿って他端側に、基体２１の底面２１４よりも若干ながら下方に突出する突出部２４３を成形している。この腕部２４の外方の突出部２４３は、図８等に示しているように、軸心方向に沿った両端縁が外側面視Ｒをとったような曲面状となっている。
The arm portion 24 has both ends of the shaft body 23 joined to the substrate 21 along the axial direction. The inner side surface 241 of the arm portion 24 connected to the inner side surface 211 of the base 21 is inclined with respect to the inner side surface 211 of the base 21. On the other hand, the outer side surface 242 of the arm portion 24 connected to the outer surface 212 of the base 21 is substantially flush with the outer surface 212 of the base 21. In addition, on the outer lower surface of each arm portion 24, on the other end side along the axial direction, a protruding portion 243 slightly protruding downward from the bottom surface 214 of the substrate 21 is formed. As shown in FIG. 8 and the like, the outer protruding portion 243 of the arm portion 24 has a curved surface shape such that both end edges along the axial direction have an outer view R.
基体２１は、ちょうど角棒の内側面２１１と底面２１４とに跨るように凹曲面２１５を成形した横断面形状を有している。この凹曲面２１５により、基体２１と軸体２３との狭間にある、腕部２４の対に挟まれた領域には、横断面視軸心回りの円環をなすようなスリット状の空隙２５が形成される。加えて、基体２１における、複数の軸体２３の間隙に臨む部位では、内側面２１１と凹曲面２１５とが交わる隅角を面取りしている。
The substrate 21 has a cross-sectional shape in which a concave curved surface 215 is formed so as to straddle the inner side surface 211 and the bottom surface 214 of the square bar. Due to the concave curved surface 215, a slit-shaped void 25 forming an annular ring around the axis of the cross-sectional view is formed in the region between the base 21 and the shaft body 23 and sandwiched between the pairs of the arm portions 24. It is formed. In addition, at the portion of the substrate 21 facing the gap between the plurality of shaft bodies 23, the corner angle at which the inner side surface 211 and the concave curved surface 215 intersect is chamfered.
基体２１の内側面２１１と一端側の端面との隅角２１６は、その側面が軸心方向に対して交差する方向を向くように面取りまたは丸面取りしてある。
The corner angle 216 between the inner side surface 211 of the substrate 21 and the end surface on one end side is chamfered or rounded so that the side surfaces intersect with each other in the axial direction.
しかして、図３及び図９に示すように、第二の綴じ桿部材２の中間部、軸体２３の存在しない領域に、フック２６を設けている。フック２６は、コイルばね４の一端を支持するためのもので、縦断面視基体２１の底面２１４よりも下方に突き出した略Ｌ字形をなす。
As shown in FIGS. 3 and 9, the hook 26 is provided in the intermediate portion of the second binding rod member 2 and in the region where the shaft body 23 does not exist. The hook 26 is for supporting one end of the coil spring 4, and has a substantially L-shape protruding below the bottom surface 214 of the vertical cross-sectional view substrate 21.
操作部材３は、綴じ桿部材１、２におけるヒンジの軸となる軸体１３、２３をくわえ込んで保持し、当該軸体１３、２３を被覆する被覆体である。操作部材３は、軸心方向に対して平行に延伸しつつ並立した側壁３１、３２と、両側壁３１、３２を連結する底壁３３とを備える。本実施形態では、これら側壁３１、３２及び底壁３３を樹脂一体成形しており、側壁３１、３２と底壁３３とで略Ｃ字またはＵ字管状の周壁を形作っている。操作部材３の全長は、綴じ桿部材１、２の基体１１、２１のそれよりも大きい。
The operation member 3 is a covering body that holds and holds the shaft bodies 13 and 23 that are the shafts of the hinges of the binding rod members 1 and 2 and covers the shaft bodies 13 and 23. The operating member 3 includes side walls 31 and 32 that extend parallel to the axial direction and stand side by side, and a bottom wall 33 that connects both side walls 31 and 32. In the present embodiment, the side walls 31, 32 and the bottom wall 33 are integrally molded with resin, and the side walls 31, 32 and the bottom wall 33 form a substantially C-shaped or U-shaped tubular peripheral wall. The total length of the operating member 3 is larger than that of the bases 11 and 21 of the binding rod members 1 and 2.
各側壁３１、３２の上端縁には、複数箇所に切欠３１１、３２１を形成してある。一方側の側壁３１の切欠３１１の数は第一の綴じ桿部材１の腕部１４の数と同じであり、他方側の側壁３２の切欠３２１の数は第二の綴じ桿部材２の腕部２４の数と同じである。また、一方側の側壁３１の切欠３１１の位置は第一の綴じ桿部材１の腕部１４の配置に対応しており、他方側の側壁３２の切欠３２１の位置は第二の綴じ桿部材２の腕部２４の配置に対応している。それ故、切欠３１１と切欠３２１とは、軸心方向にずれている。切欠３１１、３２１の軸心方向に沿った開口幅寸法は、腕部１４、２４の軸心方向寸法よりも多少大きい。切欠３１１、３２１の下端は、側壁３１、３２の内側面近傍を除き、外側方に向かうほど下方に落ち込む傾斜端面である。
Notches 311 and 321 are formed at a plurality of locations on the upper end edges of the side walls 31 and 32. The number of notches 311 on the side wall 31 on one side is the same as the number of arms 14 on the first binding rod member 1, and the number of notches 321 on the side wall 32 on the other side is the same as the number of arms 14 on the second binding rod member 2. It is the same as the number of 24. Further, the position of the notch 311 on the side wall 31 on one side corresponds to the arrangement of the arm portion 14 of the first binding rod member 1, and the position of the notch 321 on the side wall 32 on the other side corresponds to the arrangement of the arm portion 14 of the first binding rod member 1. Corresponds to the arrangement of the arm portion 24 of. Therefore, the notch 311 and the notch 321 are displaced in the axial direction. The opening width dimension along the axial direction of the notches 311 and 321 is slightly larger than the axial dimension of the arms 14 and 24. The lower ends of the notches 311 and 321 are inclined end faces that drop downward toward the outside, except for the vicinity of the inner side surface of the side walls 31 and 32.
さらに、両側壁３１、３２における、切欠３１１、３２１の形成箇所から軸心方向に偏倚した場所に、突起３１２、３１３、３２２、３２３を設けている。即ち、一方側の側壁３１の上端部の内側面から突起３１２、３１３が他方側の側壁３２の内側面に向かって突出し、他方の側壁３２の上端部の内側面からは突起３２２、３２３が一方の側壁３１の内側面に向かって突出している。ここで、突起３１３、３２３が側壁３１、３２の内側面から内側方に突出する寸法は、突起３１２、３２２が側壁３１、３２の内側面から内側方に突出する寸法よりも大きい。
Further, protrusions 312, 313, 322, and 323 are provided on both side walls 31 and 32 at locations deviated in the axial direction from the formed portions of the notches 311 and 321. That is, the protrusions 312 and 313 project from the inner side surface of the upper end portion of the side wall 31 on one side toward the inner side surface of the side wall 32 on the other side, and the protrusions 322 and 323 are unidirectional from the inner side surface of the upper end portion of the other side wall 32. It protrudes toward the inner side surface of the side wall 31 of the above. Here, the dimension of the protrusions 313 and 323 protruding inward from the inner side surface of the side walls 31 and 32 is larger than the dimension of the protrusions 312 and 322 protruding inward from the inner side surface of the side walls 31 and 32.
一方側の突起３１２、３１３と、他方側の突起３２２、３２３とは、両側壁３１、３２が離間する方向（両側壁３１、３２の内側面が向き合う方向）に沿って対向していることがある。但し、その場合にも、突出寸法の大きい突起３１３、３２３同士が対向することはなく、突出寸法の大きい突起３１３、３２３は突出寸法の小さい突起３２２、３１２と対向する。一方側の突起３１２、３１３と、他方側の突起３２２、３２３とが、軸心方向に沿って互いに偏倚していてもよい。換言すれば、一方側の突起３１２、３１３と、他方側の突起３２２、３２３とを、軸心方向に沿って互い違いに設けることもできる。
The protrusions 312 and 313 on one side and the protrusions 322 and 323 on the other side may face each other along the direction in which the side walls 31 and 32 are separated from each other (the direction in which the inner surfaces of the side walls 31 and 32 face each other). be. However, even in that case, the protrusions 313 and 323 having a large protrusion size do not face each other, and the protrusions 313 and 323 having a large protrusion size face the protrusions 322 and 312 having a small protrusion size. The protrusions 312 and 313 on one side and the protrusions 322 and 323 on the other side may be offset from each other along the axial direction. In other words, the protrusions 312 and 313 on one side and the protrusions 322 and 323 on the other side can be provided alternately along the axial direction.
底壁３３は、両側壁３１、３２の下端部同士を連接し、両側壁３１、３２とともにチャネル状をなす操作部材３の内部空間を包囲している。綴じ桿部材１、２の軸体１３、２３は、この操作部材３の内部空間に収容される。側壁３１、３２間の内法、換言すれば両側壁３１、３２が離間する方向に沿った内部空間の内寸は、綴じ桿部材１、２の軸体１３、２３の外径に略等しいかそれよりも若干大きい。一方側の側壁３１の上端部から突出する突起３１２、３１３と他方側の側壁３２との間の隙間、並びに、他方側の側壁３２の上端部から突出する突起３２２、３２３と一方側の側壁３１との間の隙間（さらに言えば、一方側の突起３１２、３１３と他方側の突起３２２、３２３との間の隙間）は何れも、両側壁３１、３２の離間方向に沿った内部空間の内寸よりも狭まっている。また、底壁３３は、軸体１３、２３の外径に略等しいかそれよりも若干大きい内径を有する略部分円筒となっている。因みに、底壁３３における、突起３１２、３２２の直下にあたる位置に穿たれている貫通孔３３１は、突起３１２、３２２を成形するための型抜き用の孔である。
The bottom wall 33 connects the lower ends of the side walls 31 and 32 to each other, and surrounds the internal space of the operating member 3 forming a channel shape together with the side walls 31 and 32. The shaft bodies 13 and 23 of the binding rod members 1 and 2 are housed in the internal space of the operating member 3. Is the inner dimension between the side walls 31 and 32, in other words, the inner dimension of the internal space along the direction in which the side walls 31 and 32 are separated from each other, substantially equal to the outer diameter of the shaft bodies 13 and 23 of the binding rod members 1 and 2? It's a little bigger than that. The gap between the protrusions 312 and 313 protruding from the upper end of the side wall 31 on one side and the side wall 32 on the other side, and the protrusions 322 and 323 protruding from the upper end of the side wall 32 on the other side and the side wall 31 on one side. (Furthermore, the gap between the protrusions 312 and 313 on one side and the protrusions 322 and 323 on the other side) are all within the internal space along the separation direction of the side walls 31 and 32. It's narrower than the size. Further, the bottom wall 33 is a substantially partial cylinder having an inner diameter substantially equal to or slightly larger than the outer diameter of the shaft bodies 13 and 23. Incidentally, the through hole 331 drilled in the bottom wall 33 at a position directly below the protrusions 312 and 322 is a hole for die cutting for forming the protrusions 312 and 322.
操作部材３の周壁３１、３２、３３により包囲された内部空間は、操作部材３の軸心方向に沿った両端部にて閉塞されている。操作部材３の一端は、ユーザがこれを把持するための把手３４となる。そして、この把手３４に隣接する位置に、拡開部３５を設けている。拡開部３５は、操作部材３の他端に向かって延びるブロック状の部位で、その先端側に平面視くさび形をなすように両外側方を向いた傾斜面３５１、３５２を形成してある。拡開部３５の傾斜面３５１、３５２は、それぞれが軸心方向に対して交差しており、両綴じ桿部材１、２の基体１１、２１の一端に形成した各傾斜面１１６、２１６に略平行である。操作部材３の拡開部３５と両綴じ桿部材１、２の基体１１、２１の一端とは、後述する操作力変換機構を構成する。
The internal space surrounded by the peripheral walls 31, 32, 33 of the operating member 3 is closed at both ends along the axial direction of the operating member 3. One end of the operating member 3 serves as a handle 34 for the user to grip the operating member 3. An expansion portion 35 is provided at a position adjacent to the handle 34. The expansion portion 35 is a block-shaped portion extending toward the other end of the operation member 3, and has inclined surfaces 351 and 352 facing outwards so as to form a wedge shape in a plan view on the tip end side thereof. .. The inclined surfaces 351 and 352 of the expansion portion 35 intersect with each other in the axial direction, and are substantially formed on the inclined surfaces 116 and 216 formed at one ends of the bases 11 and 21 of the two binding rod members 1 and 2. It is parallel. The expanded portion 35 of the operating member 3 and one end of the bases 11 and 21 of the double binding rod members 1 and 2 constitute an operating force conversion mechanism described later.
しかして、図４及び図９に示すように、操作部材３の中間部、綴じ桿部材１、２の軸体１３、２３の存在しない領域に、フック３６を設けている。フック３６は、コイルばね４の他端を支持するためのもので、縦断面視底壁３３の上面よりも上方に突き出した略Ｌ字形をなし、第二の綴じ桿部材２に設けたフック２６と軸心方向に沿って対向する。
As shown in FIGS. 4 and 9, the hook 36 is provided in the intermediate portion of the operation member 3 and in the region where the shaft bodies 13 and 23 of the binding rod members 1 and 2 do not exist. The hook 36 is for supporting the other end of the coil spring 4, has a substantially L-shape protruding above the upper surface of the vertical cross-sectional viewing bottom wall 33, and is provided on the second binding rod member 2. And face each other along the axial direction.
本実施形態の綴じ具０を組み立てるにあたっては、まず、第一の綴じ桿部材１の軸体１３と第二の綴じ桿部材２の軸体２３とを同心軸上に配置する。軸体１３の凸部１３２は軸体２３の凹部２３１内に挿入し、軸体２３の凸部２３２は軸体１３の凹部１３１内に挿入する。両綴じ桿部材１、２の軸体１３、２３は、互いに密接ないし近接して交互に並ぶ様相となる。
In assembling the binding tool 0 of the present embodiment, first, the shaft body 13 of the first binding rod member 1 and the shaft body 23 of the second binding rod member 2 are arranged on concentric shafts. The convex portion 132 of the shaft body 13 is inserted into the concave portion 231 of the shaft body 23, and the convex portion 232 of the shaft body 23 is inserted into the concave portion 131 of the shaft body 13. The shaft bodies 13 and 23 of the two binding rod members 1 and 2 are arranged in close proximity to each other or in close proximity to each other.
その上で、両綴じ桿部材１、２の軸体１３、２３をくわえ込むように操作部材３を組み付ける。即ち、操作部材３の側壁３１、３２及び底壁３３に包囲された内部空間に、両綴じ桿部材１、２の軸体１３、２３を嵌め入れる。なお、このとき、図７、図１６ないし図１９に示すように、双方の綴じ桿要素１２、２２が開放した姿勢をとるよう、予め綴じ桿部材１、２を回動させておく必要がある。さもなくば、綴じ桿部材１、２の軸体１３、２３の外周が操作部材３の突起３１３、３２３と干渉して、軸体１３、２３を操作部材３の内部空間にうまく挿入することができない。
Then, the operating member 3 is assembled so as to hold the shaft bodies 13 and 23 of the double binding rod members 1 and 2. That is, the shaft bodies 13 and 23 of the double binding rod members 1 and 2 are fitted into the internal space surrounded by the side walls 31 and 32 of the operating member 3 and the bottom wall 33. At this time, as shown in FIGS. 7, 16 to 19, it is necessary to rotate the binding rod members 1 and 2 in advance so that both binding rod elements 12 and 22 take an open posture. .. Otherwise, the outer circumferences of the shaft bodies 13 and 23 of the binding rod members 1 and 2 may interfere with the protrusions 313 and 323 of the operation member 3 to successfully insert the shaft bodies 13 and 23 into the internal space of the operation member 3. Can not.
操作部材３が両綴じ桿部材１、２の軸体１３、２３を被覆し保持している状態で、各綴じ桿部材１、２は、その軸体１３、２３を回転軸として正逆回転することが可能である。なおかつ、操作部材３は、綴じ桿部材１、２に対して相対的に、軸体１３、２３に沿って軸心方向にスライド移動することが可能である。操作部材３の側壁３１、３２の内面から突出している突起３１２、３１３、３２２、３２３は、綴じ桿部材１、２の軸体１３、２３に係合して、軸体１３、２３が操作部材３の内部空間から脱出することを阻む。つまり、突起３１２、３１３、３２２、３２３は、操作部材３の綴じ桿部材１、２からの脱離、ひいては綴じ具０の分解を抑止する係止部として機能する。
While the operating member 3 covers and holds the shaft bodies 13 and 23 of the double binding rod members 1 and 2, each of the binding rod members 1 and 2 rotates forward and reverse with the shaft bodies 13 and 23 as rotation axes. It is possible. Moreover, the operating member 3 can slide and move in the axial direction along the shaft bodies 13 and 23 relative to the binding rod members 1 and 2. The protrusions 312, 313, 322, and 323 protruding from the inner surfaces of the side walls 31 and 32 of the operating member 3 are engaged with the shaft bodies 13 and 23 of the binding rod members 1 and 2, and the shaft bodies 13 and 23 are the operating members. Prevents you from escaping from the internal space of 3. That is, the protrusions 312, 313, 322, and 323 function as locking portions for suppressing the detachment of the operating member 3 from the binding rod members 1 and 2, and eventually the disassembly of the binding tool 0.
また、図９に示しているように、第二の綴じ桿部材２に設けたフック２６と操作部材３に設けたフック３６とに、コイルばね４の両端をそれぞれ掛け止める。綴じ桿部材１、２の軸体１３、２３を操作部材３に嵌め入れることで、操作部材３のフック３６は、第二の綴じ桿部材２のフック２６よりもさらに他端側に配置される。
Further, as shown in FIG. 9, both ends of the coil spring 4 are hooked to the hook 26 provided on the second binding rod member 2 and the hook 36 provided on the operating member 3, respectively. By fitting the shaft bodies 13 and 23 of the binding rod members 1 and 2 into the operating member 3, the hook 36 of the operating member 3 is further arranged on the other end side of the hook 26 of the second binding rod member 2. ..
第一の綴じ桿部材１と第二の綴じ桿部材２とは、軸体１３、２３の軸心周りに相対的に回動する。その回動動作を通じて、綴じ桿要素１２と綴じ桿要素２２とで構成する環状の綴じ桿を開閉することができる。図６、図１０等に示すように、綴じ桿１２、２２を閉じた状態では、一方側の綴じ桿要素１２の先端部と他方側の綴じ桿要素２２の先端部とが合决り構造の如く軸心方向に重なり合い、綴じ桿に綴じ止めている紙葉類Ｓの抜出を阻止する。図７、図１１等に示すように、綴じ桿１２、２２を開いた状態では、両綴じ桿要素１２、２２の先端部同士が離反して、紙葉類Ｓの抜出を許容する。
The first binding rod member 1 and the second binding rod member 2 rotate relative to each other around the axes of the shaft bodies 13 and 23. Through the rotation operation, the annular binding rod composed of the binding rod element 12 and the binding rod element 22 can be opened and closed. As shown in FIGS. 6 and 10, when the binding rods 12 and 22 are closed, the tip of the binding rod element 12 on one side and the tip of the binding rod element 22 on the other side have a combined structure. As shown above, they overlap in the axial direction and prevent the paper leaves S bound to the binding rod from being pulled out. As shown in FIGS. 7, 11 and the like, when the binding rods 12 and 22 are open, the tips of the binding rod elements 12 and 22 are separated from each other, allowing the paper leaves S to be extracted.
操作部材３は、綴じ桿部材１、２に対して軸心方向に相対変位し、図１０に示すロック位置と、図１１に示すアンロック位置とを選択的にとり得る。操作部材３がロック位置にあるとき、一方側の側壁３１に形成している切欠３１１は同じ側の綴じ桿部材１の腕部１４に対して軸心方向にずれており、他方側の側壁３２に形成している切欠３２１も同じ側の綴じ桿部材２の腕部２４に対して軸心方向にずれている。そのため、図１２ないし図１５に示しているように、両綴じ桿部材１、２を綴じ桿１２、２２を開放する方向に回動させようとしても、腕部１４、２４が操作部材３の側壁３１、３２の端縁に衝突してしまい、回動させることができない。換言すれば、操作部材３の側壁３１、３２における切り欠かれていない端縁がストッパとなって、綴じ桿１２、２２を開放することを禁止する。
The operating member 3 is displaced relative to the binding rod members 1 and 2 in the axial direction, and the locked position shown in FIG. 10 and the unlocked position shown in FIG. 11 can be selectively taken. When the operating member 3 is in the locked position, the notch 311 formed in the side wall 31 on one side is displaced in the axial direction with respect to the arm portion 14 of the binding rod member 1 on the same side, and the side wall 32 on the other side. The notch 321 formed in the above is also displaced in the axial direction with respect to the arm portion 24 of the binding rod member 2 on the same side. Therefore, as shown in FIGS. 12 to 15, even if the double binding rod members 1 and 2 are rotated in the direction in which the binding rods 12 and 22 are opened, the arm portions 14 and 24 are the side walls of the operating member 3. It collides with the edges of 31 and 32 and cannot be rotated. In other words, the uncut end edges of the side walls 31 and 32 of the operating member 3 serve as stoppers, and it is prohibited to open the binding rods 12 and 22.
加えて、操作部材３がロック位置にあり、綴じ桿１２、２２が閉じているとき、第一の綴じ桿部材１の基体１１と、第二の綴じ桿部材２の基体２１とは、その内側面１１１、２１１同士が当接ないし近接した状態となる。操作部材３の一端側に設けた拡開部３５は、両綴じ桿部材１、２の基体１１、２１の一端に（近接はしているものの）必ずしも接触していない。操作部材３に設けたフック３６は、第二の綴じ桿部材２に設けたフック２６に比較的近い位置にあり、両フック２６、３６に掛けているコイルばね４は張力を発揮しない。
In addition, when the operating member 3 is in the locked position and the binding rods 12 and 22 are closed, the base 11 of the first binding rod member 1 and the base 21 of the second binding rod member 2 are among them. The side surfaces 111 and 211 are in contact with each other or in close proximity to each other. The expanding portion 35 provided on one end side of the operating member 3 does not necessarily come into contact with one ends (although they are close to each other) of the bases 11 and 21 of the double binding rod members 1 and 2. The hook 36 provided on the operating member 3 is located at a position relatively close to the hook 26 provided on the second binding rod member 2, and the coil springs 4 hooked on both hooks 26 and 36 do not exert tension.
翻って、操作部材３をロック位置からアンロック位置に向けてスライド移動させると、図８及び図１１に示すように、一方側の側壁３１に形成している切欠３１１の軸心方向に沿った位置が同じ側の綴じ桿部材１の腕部１４に合致し、また他方側の側壁３２に形成している切欠３２１の軸心方向に沿った位置も同じ側の綴じ桿部材２の腕部２４に合致する。従って、腕部１４、２４が切欠３１１、３２１内に進入できるようになる。のみならず、同一の軸体１３、２３に連接する腕部１４、２４の対に挟まれた空隙１５、２５に、操作部材３の側壁３１、３２における、切欠３１１、３２１の対に挟まれた部位が進入できるようにもなる。結果として、図１６ないし図１９に示すように、両綴じ桿部材１、２を相対回動させて綴じ桿１２、２２を開放することが許容されることとなる。
On the other hand, when the operating member 3 is slid from the locked position to the unlocked position, as shown in FIGS. 8 and 11, the operating member 3 is along the axial direction of the notch 311 formed in the side wall 31 on one side. The position matches the arm portion 14 of the binding rod member 1 on the same side, and the position along the axial direction of the notch 321 formed on the side wall 32 on the other side is also the arm portion 24 of the binding rod member 2 on the same side. Matches. Therefore, the arms 14 and 24 can enter the notches 311 and 321. Not only that, the gaps 15 and 25 sandwiched between the pairs of arms 14 and 24 connected to the same shaft bodies 13 and 23 are sandwiched between the pairs of notches 311 and 321 in the side walls 31 and 32 of the operating member 3. It will also be possible for other parts to enter. As a result, as shown in FIGS. 16 to 19, it is allowed to open the binding rods 12 and 22 by relatively rotating the binding rod members 1 and 2.
同時に、操作部材３がロック位置からアンロック位置へと変位する過程で、操作部材３の一端側に設けた拡開部３５の傾斜面３５１、３５２が、両綴じ桿部材１、２の基体１１、２１の一端に形成している傾斜面１１６、２１６に接触し、さらにはこれら基体１１、２１を互いに離反する方向に押し広げる。最終的に、操作部材３の拡開部３５は両綴じ桿部材１、２の基体１１、２１の内側面１１１、２１１間に入り込む。つまり、拡開部３５と基体１１、２１の一端とが操作力変換機構として働き、操作部材３を軸心方向にスライドさせる操作力を、綴じ桿部材１、２を綴じ桿１２、２２が開放する方向に回動させる力に変換する。
At the same time, in the process of displacement of the operating member 3 from the locked position to the unlocked position, the inclined surfaces 351 and 352 of the expanding portion 35 provided on one end side of the operating member 3 form the bases 11 of the double binding rod members 1 and 2. , 21 comes into contact with the inclined surfaces 116 and 216 formed at one end, and further spreads the substrates 11 and 21 in directions away from each other. Finally, the expanded portion 35 of the operating member 3 enters between the inner side surfaces 111 and 211 of the bases 11 and 21 of the double binding rod members 1 and 2. That is, the expansion portion 35 and one end of the bases 11 and 21 act as an operation force conversion mechanism, and the operation force for sliding the operation member 3 in the axial direction is released by the binding rods 12 and 22 for the binding rod members 1 and 2. It is converted into a force that rotates in the direction of the rod.
総じて言えば、操作部材３をロック位置からアンロック位置へと変位させることで、ストッパが両綴じ桿部材１、２の腕部１４、２４から軸心方向に沿って退避しつつ、拡開部３５が両綴じ桿部材１、２を押し広げて綴じ桿１２、２２を開放させる。また、操作部材３の変位により、操作部材３に設けたフック３６が第二の綴じ桿部材２に設けたフック２６から遠ざかるため、両フック２６、３６に掛けているコイルばね４が引き伸ばされて張力を発揮するようになる。
Generally speaking, by displacing the operating member 3 from the locked position to the unlocked position, the stopper retracts from the arm portions 14 and 24 of the double binding rod members 1 and 2 along the axial direction, and the expanding portion is expanded. 35 pushes both binding rod members 1 and 2 apart to open the binding rods 12 and 22. Further, due to the displacement of the operating member 3, the hook 36 provided on the operating member 3 moves away from the hook 26 provided on the second binding rod member 2, so that the coil springs 4 hooked on both hooks 26 and 36 are stretched. It will exert tension.
綴じ桿１２、２２を開放している間は、操作部材３をアンロック位置からロック位置に向けて変位させる方向の弾性付勢力、即ちコイルばね４の引っ張り張力が働くが、綴じ桿部材１、２の腕部１４、２４が側壁３１、３２の切欠３１１、３２１の開口縁に係合することから、操作部材３はアンロック位置に維持される。この状態で、ユーザが両綴じ桿要素１２、２２を手指で摘んで閉じる操作を行うと、綴じ桿部材１、２が互いに相寄る方向に回動し、各腕部１４、２４が操作部材３の側壁３１、３２の切欠３１１、３２１から脱出する。従って、操作部材３がロック位置に復帰することが許容される。
While the binding rods 12 and 22 are open, an elastic urging force in a direction that displaces the operating member 3 from the unlocked position toward the locked position, that is, a tensile tension of the coil spring 4 acts, but the binding rod member 1, Since the arm portions 14 and 24 of 2 engage with the opening edges of the notches 311 and 321 of the side walls 31 and 32, the operating member 3 is maintained in the unlocked position. In this state, when the user picks and closes both binding rod elements 12 and 22 with his / her fingers, the binding rod members 1 and 2 rotate in directions toward each other, and the arm portions 14 and 24 are the operating members 3. Escape from the notches 311 and 321 of the side walls 31 and 32 of the. Therefore, it is permissible for the operating member 3 to return to the locked position.
綴じ桿部材１、２の基体１１、２２は長尺であるので、多数本存在する綴じ桿の一部を摘んで閉じようとしても、当該部位と他の部位との間でねじれを生じ、綴じ桿部材１、２全体が綴じ桿１２、２２を閉じる方向に回動しないおそれがある。しかしながら、弾性付勢されている操作部材３がロック位置に向けて変位しようとし、その力が側壁３１、３２の切欠３１１、３２１の開口縁を介して綴じ桿部材１、２の腕部１４、２４を内側方に押し戻そうとするため、基体１１、２１のねじれが抑制され、綴じ桿部材１、２全体が回動して全ての綴じ桿１２、２２を一斉に閉じることができる。
Since the bases 11 and 22 of the binding rod members 1 and 2 are long, even if a part of a large number of binding rods is to be picked and closed, a twist occurs between the relevant part and another part, and the binding is performed. The entire rod members 1 and 2 may not rotate in the direction of closing the binding rods 12 and 22. However, the elastically urged operating member 3 tends to be displaced toward the lock position, and the force is applied to the arm portions 14 of the binding rod members 1 and 2 through the opening edges of the notches 311 and 321 of the side walls 31 and 32. Since the 24 is pushed back inward, the twisting of the bases 11 and 21 is suppressed, and the entire binding rod members 1 and 2 rotate so that all the binding rods 12 and 22 can be closed all at once.
本実施形態では、円柱状の外形を有した軸体１３、２３の一部を、横断面視略扇形をなすように切り欠いている。図１４、図１５、図１８及び図１９に示すように、切欠１３３、２３３は、横断面視軸体１３、２３の軸心近傍から径方向に沿って外方に向かうにつれて拡開する略扇形をなし、その中心角の大きさは９０°よりも大きく１８０°よりも小さい。つまり、軸体１３、２３における、切欠１３３、２３３が形成されている部位の横断面形状は、中心角が１８０°よりも大きく２７０°よりも小さい扇形となっている。
In the present embodiment, a part of the shaft bodies 13 and 23 having a columnar outer shape is cut out so as to form a substantially fan shape in a cross-sectional view. As shown in FIGS. 14, 15, 18 and 19, the notches 133 and 233 have a substantially fan shape that expands outward along the radial direction from the vicinity of the axial center of the cross-sectional view axes 13 and 23. The size of the central angle is larger than 90 ° and smaller than 180 °. That is, the cross-sectional shape of the portions of the shaft bodies 13 and 23 where the notches 133 and 233 are formed is a fan shape having a central angle larger than 180 ° and smaller than 270 °.
軸体１３、２３を操作部材３の側壁３１、３２間の内部空間に嵌め入れたとき、切欠１３３、２３３は双方の綴じ桿１２、２２が開く側に向かって開口するとともに、その切欠１３３、２３３の内に突出寸法の大きい突起３１３、３２３が入り込む。切欠１３３、２３３は、軸体１３、２３の軸心方向に沿って、操作部材３がロック位置とアンロック位置との間でスライド移動する際の変位量と同程度に、またはそれよりもやや大きく拡張している。切欠１３３、２３３内にある突起３１３、３２３が、操作部材３のロック位置からアンロック位置への、またはアンロック位置からロック位置へのスライド移動の妨げとなることはない。
When the shaft bodies 13 and 23 are fitted into the internal space between the side walls 31 and 32 of the operating member 3, the notches 133 and 233 open toward the side where both binding rods 12 and 22 open, and the notches 133, The protrusions 313 and 323 having a large protrusion size enter the 233. The cutouts 133 and 233 are about the same as or slightly larger than the amount of displacement when the operating member 3 slides between the locked position and the unlocked position along the axial direction of the shaft bodies 13 and 23. It is greatly expanded. The protrusions 313 and 323 in the notches 133 and 233 do not interfere with the sliding movement of the operating member 3 from the locked position to the unlocked position or from the unlocked position to the locked position.
軸体１３、２３の切欠１３３、２３３が形成されている部位の、軸体１３、２３を操作部材３（の内部空間）に対して挿抜する方向である上下方向から見た外寸（両側壁３１、３２の離間方向に沿った外寸）Ｗ、Ｗ’は、図１８及び図１９に示すように綴じ桿１２、２２を開放した状態でより小さくなり、図１４及び図１５に示すように綴じ桿１２、２２を閉止した状態ではより大きくなる。ここに言う上下方向とは、軸心方向及び操作部材３の両側壁３１、３２の離間方向と略直交する方向であり、軸体１３、２３を操作部材３に対して挿抜する際に当該軸体１３、２３が底壁３３に向かって接近しまたは底壁３３から離反する方向である。何れにせよ、軸体１３、２３の切欠１３３、２３３が形成されている部位の外寸Ｗ、Ｗ’は、操作部材３において対向している小さな突起３１２、３２２と大きな突起３２３、３１３との間の隙間よりは大きい。
External dimensions (both side walls) of the portion where the notches 133 and 233 of the shaft bodies 13 and 23 are formed, which is the direction in which the shaft bodies 13 and 23 are inserted and removed from the operating member 3 (internal space). The outer dimensions W and W'along the separation direction of 31 and 32 are smaller as shown in FIGS. 18 and 19 with the binding rods 12 and 22 open, and as shown in FIGS. 14 and 15. It becomes larger when the binding rods 12 and 22 are closed. The vertical direction referred to here is a direction substantially orthogonal to the axial center direction and the separation direction of the side walls 31 and 32 of the operating member 3, and the axis is the axis when the shaft bodies 13 and 23 are inserted and removed from the operating member 3. The bodies 13 and 23 are in the direction of approaching or separating from the bottom wall 33. In any case, the outer dimensions W and W'of the portions of the shaft bodies 13 and 23 where the notches 133 and 233 are formed are the small protrusions 312 and 322 facing each other in the operation member 3 and the large protrusions 323 and 313. It is larger than the gap between them.
しかも、切欠１３３、２３３の内に収まる突起３１３、３２３の下面３１４、３２４は、軸体１３、２３を操作部材３に対して挿抜する上下方向に沿って底壁３３側、即ち下方を向いている。そして、図１４及び図１５に示しているように、綴じ桿１２、２２が閉止した姿勢をとる状態では、軸体１３、２３の切欠１３３、２３３の上方を向く端面１３４、２３４がこの突起３１３、３２３の下面３１４、３２４に面接触して当接する。従って、この状態で軸体１３、２３を操作部材３の内部空間から脱出させることは不可能であるか、そうでなくとも極めて困難となる。換言すれば、綴じ桿１２、２２を閉じて紙葉類Ｓを綴じ止めている綴じ具０（の綴じ桿部材１、２または操作部材３）に大きな衝撃が加わったとしても、操作部材３が綴じ桿部材１、２から脱離して綴じ具０が分解し、綴じていた紙葉類Ｓがばらけてしまうようなことがない。
Moreover, the lower surfaces 314 and 324 of the protrusions 313 and 323 that fit in the notches 133 and 233 face the bottom wall 33 side, that is, downward along the vertical direction in which the shaft bodies 13 and 23 are inserted and removed from the operating member 3. There is. Then, as shown in FIGS. 14 and 15, in the state where the binding rods 12 and 22 are in the closed posture, the end faces 134 and 234 facing upward of the notches 133 and 233 of the shaft bodies 13 and 23 are the protrusions 313. The lower surface 314 and 324 of the 323 are brought into surface contact with each other. Therefore, it is impossible or even extremely difficult for the shaft bodies 13 and 23 to escape from the internal space of the operating member 3 in this state. In other words, even if a large impact is applied to the binding tool 0 (binding rod member 1, 2 or operating member 3) that closes the binding rods 12 and 22 and binds the paper sheets S, the operating member 3 The binding tool 0 is not disassembled by being separated from the binding rod members 1 and 2, and the bound paper sheets S are not separated.
既に述べた通り、軸体１３、２３を操作部材３の内部空間に嵌め入れ、または軸体１３、２３を操作部材３の内部空間から抜き出すためには、図１８及び図１９に示すように、綴じ桿部材１、２を回動させて綴じ桿１２、２２が開放した姿勢とする。さすれば、上下方向から見た軸体１３、２３の外寸Ｗが（綴じ桿１２、２２を閉止したときの外寸Ｗ’よりも）小さくなるとともに、切欠１３３、２３３の端面１３４、２３４が突起３１３、３２３の下面３１４、３２４から離反して当該下面３１４、３２４とは異なる方向を向くようになる。これにより、操作部材３の弾性変形を伴って軸体１３、２３を上方から操作部材３の内部空間に挿入し、または逆に軸体１３、２３を操作部材３の内部空間から上方に抜出することが可能となる。
As described above, in order to fit the shaft bodies 13 and 23 into the internal space of the operating member 3 or to pull out the shaft bodies 13 and 23 from the internal space of the operating member 3, as shown in FIGS. 18 and 19. The binding rod members 1 and 2 are rotated so that the binding rods 12 and 22 are in an open posture. Then, the outer dimensions W of the shaft bodies 13 and 23 seen from the vertical direction become smaller (than the outer dimensions W'when the binding rods 12 and 22 are closed), and the end faces 134 and 234 of the notches 133 and 233 are reduced. Is separated from the lower surface 314 and 324 of the protrusions 313 and 323 and faces in a direction different from that of the lower surface 314 and 324. As a result, the shaft bodies 13 and 23 are inserted into the internal space of the operating member 3 from above with elastic deformation of the operating member 3, or conversely, the shaft bodies 13 and 23 are pulled out upward from the internal space of the operating member 3. It becomes possible to do.
本実施形態の綴じ具０では、操作部材３に、当該操作部材３が不意にロック位置からアンロック位置に変位することを抑止するための拘束部材３７を設けている。図４、図６、図７、図９及び図２０に示すように、拘束部材３７は、操作部材３の両側壁３１、３２の離間方向と同方向に離間して並立した側壁３７１、３７２と、両側壁３７１、３７２を連結する頂壁３７３と、両側壁３７１、３７２にそれぞれ穿ち設けた当該側壁３７１、３７２を貫通する軸孔３７４、３７５と、頂壁３７３から突出する突片３７６とを備える。本実施形態では、これら側壁３７１、３７２、頂壁３７３、軸孔３７４、３７５及び突片３７６を樹脂一体成形している。
In the binding tool 0 of the present embodiment, the operating member 3 is provided with a restraining member 37 for preventing the operating member 3 from being suddenly displaced from the locked position to the unlocked position. As shown in FIGS. 4, 6, 7, 9 and 20, the restraint member 37 has side walls 371 and 372 which are separated from each other in the same direction as the separating directions of the side walls 31 and 32 of the operating member 3. The top wall 373 connecting the side walls 371 and 372, the shaft holes 374 and 375 penetrating the side walls 371 and 372 provided in the side walls 371 and 372, respectively, and the projecting piece 376 protruding from the top wall 373. Be prepared. In the present embodiment, the side walls 371 and 372, the top wall 373, the shaft holes 374, 375 and the projecting pieces 376 are integrally molded with resin.
拘束部材３７の側壁３７１、３７２と頂壁３７３とは、横断面視略Π字形をなす周壁を形作る。両側壁３７１、３７２の離間方向に沿った内法は、操作部材３の両側壁３１、３２の離間方向に沿った外法に略等しいか、これよりも若干大きい。拘束部材３７は、その各側壁３７１、３７２が操作部材３の各側壁３１、３２に外側方から添うように、操作部材３の一端に覆い被さる。
The side walls 371 and 372 of the restraining member 37 and the top wall 373 form a peripheral wall having a substantially Π-shaped cross-sectional view. The inner method along the separation direction of the side walls 371 and 372 is substantially equal to or slightly larger than the outer method along the separation direction of the side walls 31 and 32 of the operating member 3. The restraint member 37 covers one end of the operation member 3 so that the side walls 371 and 372 of the restraint member 37 follow the side walls 31 and 32 of the operation member 3 from the outside.
操作部材３の一端における、拘束部材３７の側壁３７１、３７２の内側面に近接する側壁３１、３２の外側面には、外側方に向けて突き出した支軸３１５、３２５を設けてある。各支軸３１５、３２５は、各側壁３７１、３７２の軸孔３７４、３７５にそれぞれ挿入する。これら支軸３１５、３２５と軸孔３７４、３７５との凹凸嵌合を介して、拘束部材３７を、操作部材３に対し、両側壁３１、３２の離間方向に沿って伸びる軸回りに回動可能に支持させることができる。操作部材３の一端に支持させた拘束部材３７は、把手３４の一部をなすとともに、図９に示す拘束位置と、図２０に示す非拘束位置とを選択的にとり得る。
A support shaft 315, 325 protruding outward is provided on the outer surface of the side walls 31 and 32 close to the inner side surfaces of the side walls 371 and 372 of the restraint member 37 at one end of the operation member 3. The support shafts 315 and 325 are inserted into the shaft holes 374 and 375 of the side walls 371 and 372, respectively. The restraint member 37 can be rotated about an axis extending along the separation direction of the side walls 31 and 32 with respect to the operation member 3 through the uneven fitting between the support shafts 315 and 325 and the shaft holes 374 and 375. Can be supported by. The restraining member 37 supported by one end of the operating member 3 forms a part of the handle 34, and can selectively take the restraining position shown in FIG. 9 and the non-constraining position shown in FIG. 20.
操作部材３がロック位置にあるとき、操作部材３の内部空間に挿入されている綴じ桿部材２の軸体２３の一端と、操作部材３の一端側の隔壁３８との間には、空隙３９が形成される。この空隙３９は、軸心方向に沿って、操作部材３がロック位置とアンロック位置との間でスライド移動する際の変位量と同程度に、またはそれよりもやや大きく拡張している。操作部材３がロック位置からアンロック位置に向かってスライド移動する過程では、操作部材３が綴じ桿部材１、２に対して相対変位する結果、上記の空隙３９が縮小、即ち隔壁３８が軸体２３の一端に接近する。逆に、操作部材３がアンロック位置からロック位置に向かってスライド移動する過程では、上記の空隙３９が拡大、即ち隔壁３８が軸体２３の一端から遠ざかる。
When the operating member 3 is in the locked position, there is a gap 39 between one end of the shaft body 23 of the binding rod member 2 inserted into the internal space of the operating member 3 and the partition wall 38 on one end side of the operating member 3. Is formed. The gap 39 expands along the axial direction to the same extent as or slightly larger than the displacement amount when the operating member 3 slides between the locked position and the unlocked position. In the process of sliding the operating member 3 from the locked position to the unlocked position, the operating member 3 is displaced relative to the binding rod members 1 and 2, and as a result, the gap 39 is reduced, that is, the partition wall 38 is the shaft body. Approach one end of 23. On the contrary, in the process of sliding the operating member 3 from the unlocked position to the locked position, the gap 39 expands, that is, the partition wall 38 moves away from one end of the shaft body 23.
ロック位置にある操作部材３がアンロック位置に向かって変位することを抑止する、つまりは操作部材３をロック位置に保定するためには、操作部材３の一端に支持させた拘束部材３７を支軸３１５、３２５を中心に回動させ、図９に示しているように、その突片３７６を操作部材３の隔壁３８と綴じ桿部材２の軸体２３との間の空隙３９に差し入れる。拘束部材３７がこの拘束位置をとるときには、操作部材３がアンロック位置に向かって変位しようとしても、綴じ桿部材２の軸体２３の一端が拘束部材３７の突片３７６に軸心方向から衝突し、それ以上空隙３９が縮小することができない。従って、ロック位置にある操作部材３がアンロック位置に向かって変位することが阻まれ、閉じていた綴じ桿１２、２２が意図せず開いてしまうことがない。
In order to prevent the operating member 3 in the locked position from being displaced toward the unlocked position, that is, in order to retain the operating member 3 in the locked position, a restraining member 37 supported by one end of the operating member 3 is supported. The shaft 315 and 325 are rotated around the shaft, and as shown in FIG. 9, the projecting piece 376 is inserted into the gap 39 between the partition wall 38 of the operating member 3 and the shaft body 23 of the binding rod member 2. When the restraining member 37 takes this restraining position, even if the operating member 3 tries to be displaced toward the unlocked position, one end of the shaft body 23 of the binding rod member 2 collides with the projecting piece 376 of the restraining member 37 from the axial direction. However, the void 39 cannot be further reduced. Therefore, the operating member 3 in the locked position is prevented from being displaced toward the unlocked position, and the closed binding rods 12 and 22 are not unintentionally opened.
翻って、操作部材３をロック位置からアンロック位置に変位させて綴じ桿１２、２２を開放したい場合には、拘束部材３７を支軸３１５、３２５を中心に回動させて、図２０に示しているように、その突片３７６を隔壁３８と軸体２３との間の空隙３９から抜出する。そして、拘束部材３７をこの非拘束位置に退避させてしかる後、操作部材３をアンロック位置に向けて変位させればよい。
On the other hand, when it is desired to displace the operating member 3 from the locked position to the unlocked position to open the binding rods 12 and 22, the restraining member 37 is rotated around the support shafts 315 and 325, and is shown in FIG. As shown above, the projecting piece 376 is extracted from the gap 39 between the partition wall 38 and the shaft body 23. Then, after the restraint member 37 is retracted to this non-restraint position, the operation member 3 may be displaced toward the unlocked position.
本実施形態では、ヒンジを介してその軸心周りに相対回動可能であり、その回動動作を通じて綴じ桿１２、２２を開閉させる一組の綴じ桿部材１、２と、前記綴じ桿部材１、２に対して相対変位可能であり、綴じ桿部材１、２が前記綴じ桿１２、２２を開放する方向に回動することを禁止するロック位置とこれを許容するアンロック位置とを選択的にとり得る操作部材３と、前記一組の綴じ桿部材１、２のうちの少なくとも一方の綴じ桿部材２と前記ロック位置にある前記操作部材３との間３９に差し入ることで、同操作部材３がアンロック位置に向かって変位することを抑止する拘束部材３７とを具備する綴じ具０を構成した。
In the present embodiment, a set of binding rod members 1 and 2 that can rotate relative to the axis thereof via a hinge and open and close the binding rods 12 and 22 through the rotation operation, and the binding rod member 1 A lock position that is relatively displaceable with respect to 2 and prohibits the binding rod members 1 and 2 from rotating in a direction in which the binding rods 12 and 22 are opened and an unlock position that allows this are selectively selected. By inserting the operating member 3 between the operating member 3 and the operating member 3 at least one of the pair of binding rod members 1 and 2 and the operating member 3 at the locked position, the operating member 3 is inserted into the operating member 3. The binding tool 0 including the restraining member 37 that prevents the 3 from being displaced toward the unlocked position is configured.
本実施形態によれば、紙葉類Ｓを綴じ止めた綴じ具０を鞄やリュックサック等の中に収納しているときに、意図せず操作部材３がロック位置からアンロック位置に変位して綴じ桿１２、２２が開くことが防止される。従って、鞄やリュックサック等の中で不意に紙葉類Ｓがばらけてしまうことがなくなる。
According to the present embodiment, when the binding tool 0 to which the paper sheets S are bound is stored in a bag, a rucksack, or the like, the operating member 3 is unintentionally displaced from the locked position to the unlocked position. The binding rods 12 and 22 are prevented from opening. Therefore, the paper leaves S will not be unexpectedly scattered in the bag, rucksack, or the like.
前記操作部材３は、前記綴じ桿部材１、２に対し前記軸心方向に沿ってスライド可能であり、綴じ桿部材１、２が前記綴じ桿１２、２２を開放する方向に回動することを禁止するストッパを有している。具体的には、前記操作部材３の側壁３１、３２の端縁に切欠３１１、３２１を形成し、切欠３１１、３２１に隣接する（切り欠いていない）部位を綴じ桿１２、２２の開放を禁止するためのストッパとしている。前記操作部材３が前記ロック位置にあるときには前記ストッパが前記綴じ桿部材１、２の所定部位１４、２４に接触する一方、同操作部材３が前記アンロック位置にあるときには
前記綴じ桿部材１、２の所定部位１４、２４がこの切欠３１１、３２１内に収まる、つまり綴じ桿部材１、２を回動させても当該ストッパが綴じ桿部材１、２の所定部位１４、２４に接触しない。綴じ桿部材１、３及び操作部材３によって綴じ具０の基本構成が完結することから、部品点数の削減につながる。
The operating member 3 is slidable with respect to the binding rod members 1 and 2 along the axial direction, and the binding rod members 1 and 2 rotate in a direction in which the binding rods 12 and 22 are opened. It has a stopper that prohibits it. Specifically, notches 311 and 321 are formed at the end edges of the side walls 31 and 32 of the operation member 3, and the portions adjacent to the notches 311 and 321 (not notched) are bound to prohibit the opening of the rods 12 and 22. It is used as a stopper for this. When the operating member 3 is in the locked position, the stopper contacts the predetermined portions 14, 24 of the binding rod members 1 and 2, while when the operating member 3 is in the unlocked position, the binding rod member 1, The predetermined portions 14 and 24 of 2 fit within the notches 311 and 321. That is, even if the binding rod members 1 and 2 are rotated, the stopper does not come into contact with the predetermined portions 14 and 24 of the binding rod members 1 and 2. Since the basic configuration of the binding tool 0 is completed by the binding rod members 1, 3 and the operating member 3, the number of parts can be reduced.
前記拘束部材３７は、前記綴じ桿部材２における前記軸心方向に沿った一方側の端部２３と、前記ロック位置にある前記操作部材３の前記軸心方向に沿った一方側の端部３８との間３９に差し入るものである。前記拘束部材３７は、前記綴じ桿部材２の一方側の端部２３と前記操作部材３の一方側の端部３８との間３９に差し入る拘束位置と、それら両者２３、３８の間３９から脱出する非拘束位置との間で回動可能であるように操作部材３に支持されており、ユーザが手指でこの拘束部材３７を操作しやすい。
The restraining member 37 has an end portion 23 on one side of the binding rod member 2 along the axial direction and an end portion 38 on one side of the operating member 3 at the lock position along the axial direction. It is something that goes into 39. The restraining member 37 is inserted from a restraining position 39 inserted between the one-sided end 23 of the binding rod member 2 and the one-sided end 38 of the operating member 3 and 39 between the two 23 and 38. It is supported by the operating member 3 so as to be rotatable between the non-constrained position to escape, and the user can easily operate the restraining member 37 with his / her fingers.
本実施形態の綴じ具０は、前記綴じ桿部材１、２と前記操作部材３との間に介在し、前記操作部材３を前記ロック位置から前記アンロック位置に向けて変位させる操作力を、前記綴じ桿部材１、２を前記綴じ桿１２、２２が開放する方向に回動させる力に変換する操作力変換機構を具備しており、操作部材３をアンロック位置に変位させる操作によって綴じ桿１２、２２を開かせることができる。このため。綴じ桿１２、２２が多数本存在していたとしても、それらを一斉に開放する操作が容易であって利便性が高い。
The binding tool 0 of the present embodiment intervenes between the binding rod members 1 and 2 and the operating member 3, and exerts an operating force that displaces the operating member 3 from the locked position to the unlocked position. It is provided with an operating force conversion mechanism that converts the binding rod members 1 and 2 into a force that rotates the binding rods 12 and 22 in the opening direction, and the binding rod is operated by displacing the operating member 3 to an unlocked position. 12 and 22 can be opened. For this reason. Even if a large number of binding rods 12 and 22 exist, the operation of opening them all at once is easy and convenient.
並びに、本実施形態では、ヒンジを介してその軸心周りに相対回動可能であり、回動動作を通じて綴じ桿１２、２２を開閉させる一組の綴じ桿部材１、２と、互いに離間して並立する一対の側壁３１、３２を有し、その側壁３１、３２間の空間に前記綴じ桿部材１、２における前記ヒンジの軸となる軸体１３、２３をくわえ込んで収容する被覆体３とを具備し、前記軸体１３、２３を被覆体３に対して挿抜する方向から見て、前記綴じ桿１２、２２を閉止するように前記綴じ桿部材１、２を回動させた状態での軸体１３、２３の前記一対の側壁３１、３２の離間する方向に沿った外寸Ｗ’が、綴じ桿１２、２２を開放するように綴じ桿部材１、２を回動させた状態での軸体１３、２３の前記離間方向に沿った外寸Ｗよりも大きくなるような部位を、軸体１３、２３が備えている綴じ具０を構成した。
Further, in the present embodiment, the binding rods 12 and 22 are relatively rotatable around the axis thereof via a hinge, and are separated from each other by a set of binding rod members 1 and 2 that open and close the binding rods 12 and 22 through the rotation operation. With a covering body 3 having a pair of side walls 31 and 32 that stand side by side, and holding and accommodating the shaft bodies 13 and 23 that are the axes of the hinges of the binding rod members 1 and 2 in the space between the side walls 31 and 32. The binding rod members 1 and 2 are rotated so as to close the binding rods 12 and 22 when viewed from the direction in which the shaft bodies 13 and 23 are inserted and removed from the covering body 3. A state in which the binding rod members 1 and 2 are rotated so that the outer dimensions W'along the separating directions of the pair of side walls 31 and 32 of the shaft bodies 13 and 23 open the binding rods 12 and 22. The binding tool 0 provided in the shaft bodies 13 and 23 is configured with a portion of the shaft bodies 13 and 23 having a portion larger than the outer dimension W along the separation direction.
本実施形態によれば、綴じ桿１２、２２を綴じている状態で、綴じ桿部材１、２の軸体１３、２３をくわえ込んで被覆する被覆体３から軸体１３、２３が脱出することを効果的に抑止できる。従って、綴じ具０が落下する等して強い衝撃を受けたとしても、紙葉類Ｓを綴じている綴じ具０が分解せず、紙葉類Ｓがばらけてしまうことがない。
According to the present embodiment, while the binding rods 12 and 22 are bound, the shaft bodies 13 and 23 escape from the covering body 3 that holds and covers the shaft bodies 13 and 23 of the binding rod members 1 and 2. Can be effectively suppressed. Therefore, even if the binding tool 0 is dropped or subjected to a strong impact, the binding tool 0 binding the paper leaves S is not decomposed and the paper leaves S are not separated.
前記軸体１３、２３は、その軸心方向と直交する面で切った断面が略扇形をなすように一部が切り欠かれた外形を有する。より具体的には、前記被覆体３の側壁３１、３２の一方から他方に向かって突き出す係止部３１３、３２３により、当該係止部３１３、３２３と他方の側壁３２、３１との間の隙間が、一対の側壁３１、３２間の空間の両側壁３１、３２の離間方向に沿った内寸よりも狭められており、前記係止部３１３、３２３が前記空間に収容された前記軸体１３、２３に係合することで、軸体１３、２３の当該空間からの脱出を抑制する。
The shaft bodies 13 and 23 have an outer shape partially cut out so that the cross section cut at a plane orthogonal to the axial center direction forms a substantially fan shape. More specifically, the gap between the locking portion 313, 323 and the other side wall 32, 31 due to the locking portion 313, 323 protruding from one of the side walls 31, 32 of the covering 3 toward the other. Is narrower than the inner dimension of the space between the pair of side walls 31 and 32 along the separating direction of the side walls 31 and 32, and the locking portion 313 and 323 are housed in the space. , 23 is engaged to prevent the shaft bodies 13 and 23 from escaping from the space.
特に、本実施形態では、前記係止部３１３、３２３の当接面３１４、３２４が下方を向き、前記綴じ桿１２、２２を閉止した状態での前記軸体１３、２３の切欠１３３、２３３の端面１３４、２３４が上方を向いており、これらの面３１４、３２４、１３４、２３４が軸体１３、２３を前記被覆体３に対し挿抜する方向に沿って対向するようになっている。前記綴じ桿１２、２２を閉止した状態では、前記係止部３１３、３２３と前記軸体１３、２３とがこれらの面３１４、３２４、１３４、２３４を介して面接触するため、被覆体３の内部空間に挿入した軸体１３、２３が当該空間から脱出することが確実に阻止される。
In particular, in the present embodiment, the contact surfaces 314 and 324 of the locking portions 313 and 323 face downward, and the notches 133 and 233 of the shaft bodies 13 and 23 in a state where the binding rods 12 and 22 are closed. The end faces 134 and 234 face upward, and these faces 314, 324, 134, and 234 face each other along the direction in which the shaft bodies 13 and 23 are inserted and removed from the covering body 3. In the state where the binding rods 12 and 22 are closed, the locking portions 313 and 323 and the shaft bodies 13 and 23 are in surface contact with each other via these surfaces 314, 324, 134, 234, so that the covering body 3 is covered. The shaft bodies 13 and 23 inserted into the internal space are surely prevented from escaping from the space.
被覆体である操作部材３が、ヒンジの軸１３、２３を覆うことで、この軸１３、２３の凸凹した感触をユーザに与える可能性が小さくなる。しかも、操作部材３を軸心方向にスライド操作することで、綴じ桿１２、２２の開放状態と閉止状態との切り替えを簡便に行い得る。
By covering the hinge shafts 13 and 23 with the operating member 3 which is a covering body, the possibility of giving the user an uneven feel of the shafts 13 and 23 is reduced. Moreover, by sliding the operating member 3 in the axial direction, the binding rods 12 and 22 can be easily switched between the open state and the closed state.
前記ヒンジの軸１３、２３が（切欠１３３、２３３を除いて）略円柱状の外周をなし、前記操作部材３がこのヒンジの軸１３、２３をくわえ込むようにヒンジの軸１３、２３に係合するものであるため、操作部材３の形状が徒に複雑化しない。また、操作部材３の外周面を平滑化して手触りの良化を図ることができる。
The hinge shafts 13 and 23 form a substantially columnar outer circumference (except for the notches 133 and 233), and the operating member 3 engages with the hinge shafts 13 and 23 so as to grip the hinge shafts 13 and 23. The shape of the operating member 3 is not unnecessarily complicated because it is compatible. In addition, the outer peripheral surface of the operating member 3 can be smoothed to improve the feel.
前記一組の綴じ桿部材１、２の各々に軸体１３、２３を設け、両者の軸体１３、２３を直列に配置した状態で前記操作部材３がこれらを相対回動可能に保持するため、各軸体１３、２３の全てを貫通するような長い細棒が不要となる。
To provide shaft bodies 13 and 23 to each of the set of binding rod members 1 and 2, and to hold the shaft bodies 13 and 23 in a state where both shaft bodies 13 and 23 are arranged in series so that the operating member 3 can relatively rotate them. , A long thin rod that penetrates all of the shaft bodies 13 and 23 becomes unnecessary.
前記両軸体１３、２３の互いに対向する端面の一方に凸部１３２、２３２を形成し、他方にこの凸部１３２、２３２を受け入れる凹部１３１、２３１を形成して、これら凸部１３２、２３２と凹部１３１、２３１との係合構造を構成しているため、綴じ具０の組立作業の容易化に資する上、綴じ具０としての一体性が高まり、何れかの綴じ桿部材１、２が脱落するようなおそれも小さくなる。
Convex portions 132 and 232 are formed on one of the end faces of both shaft bodies 13 and 23 facing each other, and concave portions 131 and 231 for receiving the convex portions 132 and 232 are formed on the other side. Since it has an engaging structure with the recesses 131 and 231, it contributes to facilitating the assembly work of the binding tool 0, and the unity as the binding tool 0 is enhanced, and any of the binding rod members 1 and 2 falls off. The risk of doing so is also reduced.
また、本実施形態の綴じ具０は、前記操作部材３を前記アンロック位置から前記ロック位置に向けて変位させる方向に弾性付勢する弾性付勢部材４を具備している。この弾性付勢部材４の存在により、綴じ桿部材１、２が間接的に綴じ桿１２、２２を閉じる方向に弾性付勢されることとなり、開いた綴じ桿１２、２２を閉じる操作が容易となる。
Further, the binding tool 0 of the present embodiment includes an elastic urging member 4 that elastically urges the operating member 3 in a direction of being displaced from the unlocked position toward the locked position. Due to the presence of the elastic urging member 4, the binding rod members 1 and 2 are indirectly elastically urged in the direction of closing the binding rods 12 and 22, and the operation of closing the open binding rods 12 and 22 is easy. Become.
なお、本発明は以上に詳述した実施形態に限られるものではない。列挙すると、上記実施形態では、第一の綴じ桿部材１と第二の綴じ桿部材２とは別体の部材であったが、両者を樹脂ヒンジを介して一体成形してもよい。
The present invention is not limited to the embodiment described in detail above. To enumerate, in the above embodiment, the first binding rod member 1 and the second binding rod member 2 are separate members, but both may be integrally molded via a resin hinge.
上記実施形態では、操作部材３自体にストッパを設けていたが、ストッパとして機能する部材を操作部材とは別体の部材とし、操作部材の変位によって当該部材を駆動するものとすることを妨げない。
In the above embodiment, the stopper is provided on the operation member 3 itself, but the member functioning as the stopper is a member separate from the operation member, and the displacement of the operation member does not prevent the member from being driven. ..
弾性付勢部材は、コイルばね４には限定されない。その他の態様のもの、例えば板ばね、樹脂ばね等を採用しても構わない。操作部材の一端側と綴じ桿部材（の基体）の一端側との間に、圧縮弾性力を発生させる弾性付勢部材、即ち圧縮コイルばねの類を介在させることも考えられる。
The elastic urging member is not limited to the coil spring 4. Other embodiments such as leaf springs and resin springs may be adopted. It is also conceivable to interpose an elastic urging member that generates a compressive elastic force, that is, a compression coil spring, between one end side of the operating member and one end side of the binding rod member (base).
上記実施形態では、操作部材３がロック位置にあり綴じ桿１２、２２が閉じている状態で、拘束部材３７（の突片３７６）が一方の綴じ桿部材２（の軸体２３の軸端）と操作部材３（の隔壁３８）との間に差し入り、その綴じ桿部材２及び操作部材３の双方に当接することで、操作部材３のロック位置からアンロック位置への変位を抑止していた。これに対し、拘束部材が両方の綴じ桿部材と操作部材との間に差し入り、両綴じ桿部材及び操作部材に当接して操作部材３のロック位置からアンロック位置への変位を抑止する構造とすることも可能である。
In the above embodiment, the restraining member 37 (projection piece 376) is one of the binding rod members 2 (the shaft end of the shaft body 23) in a state where the operating member 3 is in the locked position and the binding rods 12 and 22 are closed. And the operation member 3 (the partition wall 38), and by contacting both the binding rod member 2 and the operation member 3, the displacement of the operation member 3 from the locked position to the unlock position is suppressed. rice field. On the other hand, a structure in which the restraining member is inserted between both binding rod members and the operating member and abuts on both binding rod members and the operating member to prevent displacement of the operating member 3 from the locked position to the unlocked position. It is also possible to.
上記実施形態では、拘束部材３７が操作部材３とは別体をなしていたが、両者を樹脂ヒンジを介して一体成形してもよい。
In the above embodiment, the restraint member 37 is a separate body from the operation member 3, but both may be integrally molded via a resin hinge.
上記実施形態では、拘束部材３７を操作部材３に対して回動可能であるように操作部材３に支持させていたが、拘束部材を操作部材に対して（例えば、上下方向に沿って）スライド移動可能であるように操作部材に支持させてもよい。さらには、拘束部材を綴じ桿部材に支持させることも考えられる。何れにせよ、拘束部材が拘束位置と非拘束位置との間で綴じ桿部材及び操作部材に対して相対変位し得るものであればよく、拘束部材を操作部材に対して脱着可能としても構わない。
In the above embodiment, the restraint member 37 is supported by the operation member 3 so as to be rotatable with respect to the operation member 3, but the restraint member is slid with respect to the operation member (for example, along the vertical direction). It may be supported by an operating member so that it can be moved. Further, it is also conceivable to support the restraining member by the binding rod member. In any case, the restraining member may be detachable from the binding rod member and the operating member as long as it can be displaced relative to the binding rod member and the operating member between the restrained position and the non-constrained position. ..
上記実施形態では、円柱状の外形を有する軸体１３、２３の一部を横断面視略扇形をなすように切り欠き、綴じ桿１２、２２を閉じた状態での軸体１３、２３の（軸体１３、２３を被覆体である操作部材３に対して挿抜する方向から見た）外寸Ｗ’が綴じ桿１２、２２を開いた状態での軸体１３、２３の外寸Ｗよりも大きくなるようにしていた。これ以外に、軸体の横断面形状を楕円その他の非円形状に成形することで、綴じ桿を閉じた状態での当該軸体の外寸が綴じ桿を開いた状態でのそれよりも大きくなるように構成することが考えられる。
In the above embodiment, a part of the shaft bodies 13 and 23 having a columnar outer shape is cut out so as to form a substantially fan shape in a cross-sectional view, and the shaft bodies 13 and 23 (in a state where the binding rods 12 and 22 are closed). The outer dimension W'(viewed from the direction in which the shaft bodies 13 and 23 are inserted and removed from the operating member 3 which is the covering body) is larger than the outer dimension W of the shaft bodies 13 and 23 with the binding rods 12 and 22 open. I was trying to get bigger. In addition to this, by forming the cross-sectional shape of the shaft into an ellipse or other non-circular shape, the outer dimensions of the shaft with the binding rod closed are larger than those with the binding rod open. It is conceivable to configure it so that it becomes.
また、図２１ないし図２５に、本発明の変形例の一を示している。この変形例と上記実施形態とでは、綴じ桿部材１、２が備える軸体１３、２３の形状が異なっている。本変形例における綴じ桿部材１、２の軸体１３、２３には、被覆体たる操作部材３の側壁３１、３２間の空間に対して抜差不能な区域１３５、２３５と、操作部材３の側壁３１、３２間の空間に対して抜差可能な区域１３６、２３６とを設けている。後者の区域１３６、２３６は、軸体１３、２３の軸心方向に沿って前者の区域１３５、２３５に隣接する。
Further, FIGS. 21 to 25 show one of the modifications of the present invention. The shapes of the shaft bodies 13 and 23 included in the binding rod members 1 and 2 are different between this modification and the above embodiment. In the shaft bodies 13 and 23 of the binding rod members 1 and 2 in this modification, the areas 135 and 235 which cannot be inserted into and removed from the space between the side walls 31 and 32 of the operating member 3 which is the covering body, and the operating member 3 Areas 136 and 236 that can be inserted and removed from the space between the side walls 31 and 32 are provided. The latter areas 136 and 236 are adjacent to the former areas 135 and 235 along the axial direction of the shaft bodies 13 and 23.
前者の区域１３５、２３５には、円柱状の外形を有した軸体１３、２３の左上部及び右上部を各々アングル状に切り欠くことで、上向端面１３５１、１３５２、２３５１、２３５２を形成してある。
In the former areas 135 and 235, the upward end faces 1351, 1352, 2351 and 2352 are formed by cutting out the upper left and upper right portions of the shaft bodies 13 and 23 having a columnar outer shape in an angle shape, respectively. There is.
前者の区域１３５、２３５に連なる後者の区域１３６、２３６の横断面形状は、前者の区域１３５、２３５の横断面形状よりも縮小している。特に、後者の区域１３６、２３６の上縁部を切り落としており、その上面１３６１、２３６１は前者の区域１３５、２３５の上縁よりも低位置にある。加えて、前者の区域１３５、２３５の上向端面１３５１、２３５１の下方にある部位を切り落としており、その外側面１３６２、２３６２は円柱状の軸体１３、２３の外周よりも内側方に控えている。綴じ桿１２、２２を閉じている状態では、外側面１３６２、２３６２の下部１３６３、２３６３は斜め下方を向くように傾斜している。さらに、上向端面１３５２、２３５２と軸体１３、２３の外周とが交わる隅角を面取りするように切り落として、傾斜面１３６４、２３６４を形成している。綴じ桿１２、２２を閉じた状態で、傾斜面１３６４、２３６４は斜め上方を向く。
The cross-sectional shape of the latter areas 136 and 236 connected to the former areas 135 and 235 is smaller than the cross-sectional shape of the former areas 135 and 235. In particular, the upper edges of the latter areas 136 and 236 are cut off, and the upper surfaces 1361 and 2361 are lower than the upper edges of the former areas 135 and 235. In addition, the part below the upward end faces 1351 and 2351 of the former areas 135 and 235 is cut off, and the outer faces 1362 and 2362 are reserved inward from the outer circumference of the columnar shaft bodies 13 and 23. There is. When the binding rods 12 and 22 are closed, the lower portions 1363 and 2363 of the outer surfaces 1362 and 2362 are inclined so as to face diagonally downward. Further, the inclined surfaces 1364 and 2364 are formed by chamfering the corners where the upward end surfaces 1352 and 2352 and the outer circumferences of the shaft bodies 13 and 23 intersect. With the binding rods 12 and 22 closed, the inclined surfaces 1364 and 2364 face diagonally upward.
図２２及び図２３に示すように、綴じ桿１２、２２が閉止した姿勢をとり、かつ操作部材３がロック位置にあるとき、操作部材３の側壁３１、３２の内面から突出する突起３１２、３１３、３２２、３２３が、綴じ桿部材１、２の軸体１３、２３における抜差不能な区域１３５、２３５と係合する。このとき、係止部たる突起３１３、３２３の下面３１４、３２４と、軸体１３、２３の当該区域１３５、２３５に形成した上向端面１３５２、２３５２とが面接触して当接する。従って、この状態で軸体１３、２３を操作部材３の内部空間から脱出させることは不可能であるか、そうでなくとも極めて困難となる。
As shown in FIGS. 22 and 23, when the binding rods 12 and 22 are in the closed position and the operating member 3 is in the locked position, the protrusions 312 and 313 projecting from the inner surfaces of the side walls 31 and 32 of the operating member 3 3, 322, 323 engage with the non-detachable areas 135, 235 in the shaft bodies 13, 23 of the binding rod members 1, 2. At this time, the lower surfaces 314 and 324 of the protrusions 313 and 323, which are the locking portions, and the upward end surfaces 1352 and 2352 formed in the areas 135 and 235 of the shaft bodies 13 and 23 come into contact with each other and come into contact with each other. Therefore, it is impossible or even extremely difficult for the shaft bodies 13 and 23 to escape from the internal space of the operating member 3 in this state.
並びに、突起３１２、３２２の下面３１６、３２６と、軸体１３、２３の当該区域１３５、２３５に形成した上向端面１３５１、２３５１とが極近接する。なお、本変形例における突起３１２、３２２は、上記実施形態におけるそれと比較して突出寸法が大きい。綴じ桿要素１２、２２に外側方に向かう大きな外力が作用した場合には、綴じ桿要素１２、２２から離れた側にあるこれらの突起３１２、３２２に上向端面１３５１、２３５１が衝突するため、軸体１３、２３が操作部材３から抜け出てしまうことが阻止される。
Further, the lower surfaces 316 and 326 of the protrusions 312 and 322 and the upward end faces 1351 and 2351 formed in the areas 135 and 235 of the shaft bodies 13 and 23 are in close proximity to each other. The protrusions 312 and 322 in this modification have a larger protrusion size than those in the above embodiment. When a large outward force acts on the binding rod elements 12 and 22, the upward end faces 1351 and 2351 collide with these protrusions 312 and 222 on the side away from the binding rod elements 12 and 22. It is prevented that the shaft bodies 13 and 23 come out of the operating member 3.
上記実施形態と同様、操作部材３をロック位置からアンロック位置に向けてスライド移動させると、綴じ桿部材１、２が回動して綴じ桿１２、２２が開放する。その際、操作部材３が綴じ桿部材１、２に対して相対的に軸心方向に沿って変位することから、図２４及び図２５に示すように、突起３１２、３１３、３２２、３２３が軸体１３、２３の抜差不能な区域１３５、２３５から抜差可能な区域１３６、２３６へと遷移し、当該区域１３６、２３６に係合するようになる。このときには、操作部材３の突起３１２、３１３、３２２、３２３と軸体１３、２３の上向端面１３５１、２３５１とが当接しない。
Similar to the above embodiment, when the operating member 3 is slid from the locked position to the unlocked position, the binding rod members 1 and 2 rotate to open the binding rods 12 and 22. At that time, since the operating member 3 is displaced along the axial direction relative to the binding rod members 1 and 2, the protrusions 312, 313, 322, and 323 are shafts as shown in FIGS. 24 and 25. The body 13 and 23 transition from the non-removable areas 135 and 235 to the removable areas 136 and 236, and engage with the areas 136 and 236. At this time, the protrusions 312, 313, 322, 323 of the operating member 3 and the upward end surfaces 1351 and 2351 of the shaft bodies 13 and 23 do not come into contact with each other.
また、軸体１３、２３の当該区域１３６、２３６の外周が一部切り落とされており、綴じ桿部材１、２及び軸体１３、２３の回動に伴って、その切り落とし面１３６３、１３６４、２３６３、２３６４が上下方向に対して略平行になる。結果、当該区域１３６、２３６を上下方向から見た外寸（両側壁３１、３２の離間方向に沿った外寸）Ｗは、操作部材３において対向する突起３１２、３２２と突起３２３、３１３との間の隙間よりは若干大きいものの、図２２及び図２３に示している抜差不能な区域１３５、２３５の外寸Ｗ’よりも小さくなる。
Further, the outer periphery of the areas 136 and 236 of the shaft bodies 13 and 23 is partially cut off, and the cut-off surfaces 1363, 1364 and 2363 are cut off as the binding rod members 1 and 2 and the shaft bodies 13 and 23 rotate. , 2364 are substantially parallel to the vertical direction. As a result, the outer dimensions (outer dimensions along the separation direction of the side walls 31 and 32) W when the areas 136 and 236 are viewed from the vertical direction are the protrusions 312 and 322 and the protrusions 323 and 313 facing each other in the operation member 3. Although slightly larger than the gap between them, it is smaller than the outer dimensions W'of the non-detachable areas 135 and 235 shown in FIGS. 22 and 23.
操作部材３をアンロック位置からロック位置に向けてスライド移動させると、綴じ桿部材１、２が回動して綴じ桿１２、２２が閉止する。その際、操作部材３が綴じ桿部材１、２に対して相対的に軸心方向に沿って変位し、突起３１２、３１３、３２２、３２３が軸体１３、２３の抜差可能な区域１３６、２３６から抜差可能な区域１３５、２３５へと遷移して、再び当該区域１３５、２３５に係合するようになる。
When the operating member 3 is slid from the unlocked position to the locked position, the binding rod members 1 and 2 rotate and the binding rods 12 and 22 are closed. At that time, the operating member 3 is displaced relative to the binding rod members 1 and 2 along the axial direction, and the protrusions 312, 313, 322, and 323 are the removable areas 136 of the shaft bodies 13 and 23. It transitions from 236 to the removable areas 135 and 235, and engages with the areas 135 and 235 again.
本変形例の綴じ具０を組み立てるにあたっては、第一の綴じ桿部材１の軸体１３と第二の綴じ桿部材２の軸体２３とを同心軸上に配置し、双方の綴じ桿要素１２、２２が開放した姿勢をとるようにこれら綴じ桿部材１、２を回動させてから、操作部材３を軸体１３、２３をくわえ込むように組み付ける。操作部材３を組み付ける、即ち軸体１３、２３を操作部材３の内部空間に挿入するにあたっては、軸体１３、２３の抜差可能な区域１３６、２３６を操作部材３の突起３１２、３１３、３２２、３２３の位置に合わせて、当該区域１３６、２３６を突起３１２、３２２と突起３２３、３１３との間の隙間に押し入れる。
In assembling the binding tool 0 of this modification, the shaft body 13 of the first binding rod member 1 and the shaft body 23 of the second binding rod member 2 are arranged on concentric axes, and both binding rod elements 12 are arranged. , 22 is rotated so that the binding rod members 1 and 2 take an open posture, and then the operating member 3 is assembled so as to hold the shaft bodies 13 and 23. When assembling the operating member 3, that is, inserting the shaft bodies 13 and 23 into the internal space of the operating member 3, the removable areas 136 and 236 of the shaft bodies 13 and 23 are the protrusions 312, 313 and 322 of the operating member 3. The area 136, 236 is pushed into the gap between the protrusions 312 and 322 and the protrusions 323 and 313 in accordance with the position of 323.
本変形例に係る綴じ具０は、ヒンジを介してその軸心周りに相対回動可能であり、回動動作を通じて綴じ桿１２、２２を開閉させる一組の綴じ桿部材１、２と、互いに離間して並立する一対の側壁３１、３２を有し、その側壁３１、３２間の空間に前記綴じ桿部材１、２における前記ヒンジの軸となる軸体１３、２３をくわえ込んで収容する被覆体３とを具備し、前記軸体１３、２３を被覆体３に対して挿抜する方向から見て、前記綴じ桿１２、２２を閉止するように前記綴じ桿部材１、２を回動させた状態での軸体１３、２３の前記一対の側壁３１、３２の離間する方向に沿った外寸Ｗ’が、綴じ桿１２、２２を開放するように綴じ桿部材１、２を回動させた状態での軸体１３、２３の前記離間方向に沿った外寸Ｗよりも大きくなるような部位（抜差不能な区域１３５、２３５及び抜差可能な区域１３６、２３６）を、軸体１３、２３に備えているものである。
The binding tool 0 according to this modification is relatively rotatable around its axis via a hinge, and is connected to a set of binding rod members 1 and 2 that open and close the binding rods 12 and 22 through the rotation operation. A coating having a pair of side walls 31 and 32 that are spaced apart from each other and accommodate the shaft bodies 13 and 23 that are the axes of the hinges of the binding rod members 1 and 2 in the space between the side walls 31 and 32. The binding rod members 1 and 2 are rotated so as to close the binding rods 12 and 22 when the body 3 is provided and the shaft bodies 13 and 23 are inserted and removed from the covering body 3. The binding rod members 1 and 2 were rotated so that the outer dimensions W'along the separating direction of the pair of side walls 31 and 32 of the shaft bodies 13 and 23 in the state opened the binding rods 12 and 22. A portion (areas 135, 235 that cannot be pulled out and areas 136, 236 that can be pulled out) that are larger than the outer dimension W along the separation direction of the shaft bodies 13 and 23 in the state is formed on the shaft body 13. It is prepared for 23.
そして、前記被覆体３の側壁３１、３２の一方から他方に向かって突き出す係止部３１３、３２３により、当該係止部３１３、３２３と他方の側壁３２、３１との間の隙間が、一対の側壁３１、３２間の空間の両側壁３１、３２の離間方向に沿った内寸よりも狭められており、前記係止部３１３、３２３が前記空間に収容された前記軸体１３、２３に係合することで、軸体１３、２３の当該空間からの脱出を抑制する。
Then, due to the locking portions 313 and 323 protruding from one of the side walls 31 and 32 of the covering body 3 toward the other, the gap between the locking portions 313 and 323 and the other side walls 32 and 31 is paired. The space between the side walls 31 and 32 is narrower than the inner dimensions of the side walls 31 and 32 along the separation direction, and the locking portions 313 and 323 are engaged with the shaft bodies 13 and 23 housed in the space. By combining, the escape of the shaft bodies 13 and 23 from the space is suppressed.
前記係止部３１３、３２３の当接面３１４、３２４は下方を向き、前記綴じ桿１２、２２を閉止した状態での前記軸体１３、２３（の抜差不能な区域１３５、２３５）に形成した端面１３５２、２３５２は上方を向いており、これらの面３１４、３２４、１３５２、２３５２が軸体１３、２３を前記被覆体３に対し挿抜する方向に沿って対向するようになっている。前記綴じ桿１２、２２を閉止した状態では、前記係止部３１３、３２３と前記軸体１３、２３とがこれらの面３１４、３２４、１３５２、２３５２を介して面接触するので、被覆体３の内部空間に挿入した軸体１３、２３が当該空間から脱出することが確実に阻止される。
The contact surfaces 314 and 324 of the locking portions 313 and 323 face downward and are formed on the shaft bodies 13 and 23 (non-detachable areas 135 and 235) with the binding rods 12 and 22 closed. The end faces 1352 and 2352 are facing upward, and these faces 314, 324, 1352 and 2352 face each other along the direction in which the shaft bodies 13 and 23 are inserted and removed from the covering body 3. In the state where the binding rods 12 and 22 are closed, the locking portions 313 and 323 and the shaft bodies 13 and 23 come into surface contact with each other via these surfaces 314, 324, 1352 and 2352, so that the covering body 3 has a covering body 3. The shaft bodies 13 and 23 inserted into the internal space are surely prevented from escaping from the space.
また、前記被覆体３が、前記綴じ桿部材１、２に対し前記軸心方向に沿ってスライド可能であり、前記綴じ桿部材１、２が前記綴じ桿１２、２２を開放する方向に回動することを禁止するロック位置とこれを許容するアンロック位置とを選択的にとり得る操作部材であり、前記軸体１３、２３に、前記被覆体３の側壁３１、３２間の空間に対して抜差不能な区域１３５、２３５と、前記軸心方向に沿って同区域１３５、２３５に隣接し被覆体３の側壁３１、３２間の空間に対して抜差可能な区域１３６、２３６とが設けられ、前記被覆体３が前記ロック位置にあるときに前記綴じ桿部材１、２が前記綴じ桿１２、２２を閉止する姿勢をとりつつ前記係止部３１３、３２３が前記軸体１３、２３の抜差不能な区域１３５、２３５に係合する一方、前記被覆体３が前記アンロック位置にあるときに前記綴じ桿部材１、２が前記綴じ桿１２、２２を開放する姿勢をとりつつ前記係止部３１３、３２３が前記軸体１３、２３の抜差可能な区域１３６、２３６に遷移し、このときの軸体１３、２３の抜差可能な区域１３６、２３６の前記一対の側壁３１、３２の離間する方向に沿った外寸Ｗが、被覆体３がロック位置にあるときの軸体１３、２３の抜差不能な区域１３５、２３５の前記離間方向に沿った外寸Ｗ’よりも小さくなっている。
Further, the covering body 3 is slidable with respect to the binding rod members 1 and 2 along the axial direction, and the binding rod members 1 and 2 rotate in a direction in which the binding rods 12 and 22 are opened. It is an operating member that can selectively take a lock position that prohibits the movement and an unlock position that allows the lock position. Areas 135 and 235 that cannot be separated and areas 136 and 236 that are adjacent to the areas 135 and 235 along the axial direction and can be inserted and removed with respect to the space between the side walls 31 and 32 of the covering body 3 are provided. When the covering body 3 is in the locked position, the binding rod members 1 and 2 take a posture of closing the binding rods 12 and 22, and the locking portions 313 and 323 pull out the shaft bodies 13 and 23. While engaging with the inseparable areas 135 and 235, when the covering 3 is in the unlocked position, the binding rod members 1 and 2 are locked while taking a posture of opening the binding rods 12 and 22. The portions 313 and 323 transition to the removable areas 136 and 236 of the shaft bodies 13 and 23, and the pair of side walls 31 and 32 of the removable areas 136 and 236 of the shaft bodies 13 and 23 at this time. The outer dimension W along the separating direction is smaller than the outer dimension W'along the separating direction of the non-detachable areas 135 and 235 of the shaft bodies 13 and 23 when the covering body 3 is in the locked position. ing.
その上で、前記被覆体３が前記ロック位置にあるときに、前記被覆体３の側壁３１、３２の他方から一方に向かって突出する突起３１２、３２２が、前記軸体１３、２３の抜差不能な区域１３５、２３５に極近接しているので、閉止している綴じ桿１２、２２に外側方に向かう大きな外力が作用したとしても、軸体１３、２３が被覆体３から抜け出てしまうことが抑止される。
Further, when the covering body 3 is in the locked position, the protrusions 312 and 322 projecting from the other side of the side walls 31 and 32 of the covering body 3 toward one side are the insertion / removal of the shaft bodies 13 and 23. Since it is extremely close to the impossible areas 135 and 235, the shaft bodies 13 and 23 will come out of the covering body 3 even if a large outward force acts on the closed binding rods 12 and 22. Is suppressed.
その他、各部の具体的構成は、本発明の趣旨を逸脱しない範囲で種々変形が可能である。
In addition, the specific configuration of each part can be variously modified without departing from the spirit of the present invention.
