JP2019098652A - Binder - Google Patents

Abstract

To inhibit a shaft body of a binding rod member from escaping from a coating body that bites the shaft body to coat the same as the binding rod remains bound.SOLUTION: A binder 0 is configured which comprises a set of binding rod members 1, 2 capable of relatively rotating via a hinge around its axis to open and close binding rods 12, 22 through its turning action, and a coating body 3 that has a pair of side walls 31, 32 standing side by side by separating from each other to bite and store a shaft body 13 serving as the axis of the hinge in the binding rod members 1, 2 in a space between the side walls 31, 32, where the shaft body 13 comprises such a part that the external size W' of the shaft body 13 along a direction of separating the pair of side walls 31, 32 as the binding rod members 1, 2 remain turned to stop the binding rods 12, 22 as viewed from directions of inserting and removing the shaft body 13 into and out of the coating body 3 may be larger than the external size along the separation direction of the shaft body 13 as the binding rod members 1, 2 remain turned to leave the binding rods 12, 22 open.SELECTED DRAWING: Figure 14

Description

  The present invention relates to a binding tool for binding paper sheets.

  The following patent documents disclose ring binders that can hold sheets such as loose-leaf and clear book refills. This binding tool comprises a set of binding rod members that can be rotated relative to the axial center via a hinge, and an operation member that can be displaced relative to the binding rod members along the axial direction. . The operation member is also a cover which holds, covers and covers, in its inner space, a shaft serving as an axis of a hinge of the binding rod member. The operation member prohibits the binding rod member from pivoting in the direction of opening the binding rod at the lock position, and allows the binding rod member to pivot in the same direction at the unlock position. When the user slides the operation member from the lock position to the unlock position, the binding rod can be opened, and the paper sheets can be arbitrarily replaced.

  The above-mentioned binding tool has an excellent convenience that allows easy opening operation of the binding rod. On the other hand, it is not possible to completely deny the possibility that the operating member may be detached from the binding rod member due to a strong impact received when dropped etc. In other words, the shaft of the binding rod member may escape from the operating member. If that happens, the binding tool is disassembled, and the paper sheets that were bound to the binding rod are separated.

Patent No. 5590142 Patent No. 5590143

  The present invention is intended to prevent the shaft from escaping from the cover which holds the shaft of the binding rod member in a state of binding the binding rod.

  In the present invention, it has a pair of binding rod members which are relatively rotatable around their axes via hinges and which open and close the binding rods through the pivoting movement, and a pair of side walls which stand apart from each other. And a cover for holding a shaft serving as an axis of the hinge in the binding rod member in a space between the side walls, and the binding being viewed from the direction of inserting and removing the shaft from the cover, the binding The outer diameter of the shaft along the direction in which the pair of side walls separate in the state in which the binding rod member is rotated to close the binding rod, and the binding rod member is rotated to release the binding rod. A binding tool is provided in which the shaft body has a portion that is larger than the outer dimension of the shaft body in the separated state along the separation direction.

  The shaft has, for example, an outer shape partially cut away so that a cross section taken along a plane orthogonal to the axial direction thereof forms a substantially fan shape.

  More specifically, the gap between the locking portion and the other side wall is a gap between the side walls of the space between the pair of side walls by the locking portion protruding from one side to the other of the side wall of the cover. The locking portion is narrower than the inner dimension along the direction, and the locking portion engages with the shaft housed in the space to suppress the escape of the shaft from the space. In this case, it is preferable that the locking portion and the shaft contact with each other in a state where the binding rod member is rotated so as to close the binding rod. Further, the surface of the locking portion in contact with the shaft in a state in which the binding rod member is rotated so as to close the binding rod faces a direction in which the shaft is inserted into and removed from the cover. Is preferred.

  Further, the cover is slidable along the axial direction with respect to the binding rod member, and the lock position and the locking position for prohibiting the binding rod member from rotating in the direction for opening the binding rod It is an operation member which can be taken selectively as an unlocking position which permits it, and an area which can not be pulled out with respect to a space between side walls of the cover and an area adjacent to the area along the axial direction. An area which can be pulled out with respect to the space between the side walls of the cover is provided, and the locking member takes the posture to close the binding rod when the cover is in the lock position. The engagement portion engages with the non-separable area of the shaft while the engagement portion takes a posture to open the binding rod when the cover is in the unlock position. Transition to the removable area of the shaft, and The outer dimension of the gapable area along the direction of separation of the pair of side walls is smaller than the dimension of the non-removable area of the shaft along the direction of separation when the cover is in the locked position. Can be taken.

  Furthermore, when the covering is in the locked position, the projection projecting from the other side of the side wall of the covering toward the other is in close proximity to the non-extractable area of the shaft. Even if a large external force acting outward is applied to the closing binding rod, the shaft body is reliably prevented from coming off the cover.

  According to the present invention, it is possible to prevent the shaft from escaping from the cover which holds the shaft of the binding rod member in the state of binding the binding rod.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the ring notebook which uses the binding tool in one Embodiment of this invention. The whole perspective view of the binding tool of the embodiment. The perspective view which shows the binding rod member of the binding tool of the embodiment. The perspective view which shows the operation member of the binding tool of the embodiment. The principal part disassembled perspective view of the binding tool of the embodiment. The principal part perspective view of the binding tool of the embodiment. The principal part perspective view of the binding tool of the embodiment. The figure which shows the shape and positional relationship of the arm of the binding rod member in the binding tool of the embodiment, and the notch of an operation member. The longitudinal section of the binding tool of the embodiment. The principal part top view of the binding tool of the embodiment. The principal part top view of the binding tool of the embodiment. The line AA cross-sectional view of the binding tool of the embodiment. The BB sectional view taken on the line of the binding tool of the embodiment. The CC sectional view taken on the line of the binding tool of the embodiment. The DD sectional view taken on the line of the binding tool of the embodiment. The EE sectional view taken on the line of the binding tool of the embodiment. The FF sectional view taken on the line of the binding tool of the embodiment. The GG sectional view taken on the line of the binding tool of the embodiment. The HH line cross-sectional view of the binding tool of the embodiment. The longitudinal section of the binding tool of the embodiment. The principal part perspective view which shows the binding rod member which concerns on one of the modifications of this invention. The cross-sectional view of the binding tool of the same modification. The cross-sectional view of the binding tool of the same modification. The cross-sectional view of the binding tool of the same modification. The cross-sectional view of the binding tool of the same modification.

  One 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 provided with a plurality of openable and closable binding bars 12 and 22. The binding rods 12 and 22 are inserted into the binding holes previously made in the sheet S, and the sheet S is bound. In particular, as shown in FIG. 1, it is used as a ring notebook by binding the refills of a plurality of leaves and clear book (further, front cover and back cover), etc., which will be the inner sheet of the notebook, as shown in FIG. be able to. This ring note can open the page open at a 180 degree angle.

  The binding tool 0 of the present embodiment is an open state / closed state of the binding rod supported by the first binding rod member 1 and the second binding rod member 2 which rotate relative to each other, and both binding rod members 1 and 2 The operating member 3 operated to switch the state, and the coil spring 4 as an elastic biasing member that elastically biases the operating member 3 are used as constituent members.

  The shape of the first binding rod member 1 and the shape of the second binding rod member 2 are similar. The first binding rod member 1 is a rod-like base 11 elongated in parallel to the axial direction, the binding rod element 12 extended from the base 11, and the rotation of the binding rod member 1 apart from the base 11. A central shaft 13 and an arm 14 connecting the shaft 13 to the base 11 are provided. In the present embodiment, the base 11, the binding rod element 12, the shaft 13 and the arm 14 are integrally molded with resin.

  A large number of binding rod elements 12 exist, and they line up along the axial direction. The individual binding wedge elements 12 temporarily extend straight outward from the outer side surface 112 of the base 11 in a direction perpendicular to the axial direction, and curve and stand up from the outer end in a circular arc or an elliptical arc. . The upper surface of the rectilinear portion of the proximal end portion of the binding rod element 12 is substantially flush with the top surface 113 of the base 11. Further, the tip end portion of the binding rod element 12 linearly extends toward the binding rod element 22 of the second binding rod member 2 which is the counterpart. The extension direction 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, a substantially oval shape, or a substantially rounded square shape which is slightly expanded in the axial direction. The tip of the binding rod element 12 is cut out like a gob.

  The shaft 13 has a generally cylindrical outer shape as a whole, and extends along the axial direction. However, although it will be described in detail later, the shaft 13 has a partially cut away portion. The shaft 13 is divided into a plurality (in the illustrated example, about half of the number of binding rod elements 12). Then, except for an intermediate portion along the axial center direction of the binding rod member 1, the shaft bodies 13 are aligned on the concentric axis with a predetermined gap. The shaft 13 is biased slightly inward from the base 11 so that the axis thereof is substantially coplanar with the inner side surface 111 of the base 11.

  A recess 131 is formed on one end surface of the shaft 13 and a protrusion 132 is formed on the other end surface. The convex portion 132 is a hemispherical protrusion overlapping the axial center of the shaft 13. The recess 131 is a recess extending outward from the axial center position of the shaft 13 and reaching the outer periphery of the shaft 13, ie, opened outward, and the inner surface thereof has a longitudinal cross-sectional view It has a semi-cylindrical shape having a diameter equal to the diameter of the convex portions 132 and 232 in a sectional view or an outer side surface view cut by parallel planes, and the groove width thereof is also substantially equal to the diameter of the convex portions 132 and 232. Furthermore, the inner end edge of the recess 131 also has a diameter equal to that of the protrusions 132 and 232 in a cross-sectional view (a cross-sectional view cut in a plane perpendicular to the axial direction or viewed from the axial direction). It has a semicircular shape.

  Two arm portions 14 exist for one shaft 13, and both ends of the shaft 13 along the axial center direction are respectively joined to the base 11. 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, on the other side of the outer lower surface of each arm 14 along the axial direction, a projecting portion 143 which protrudes slightly downward from the bottom surface 114 of the base 11 is formed. As shown in FIG. 5 and the like, the outward projecting portion 143 of the arm portion 14 has a curved surface in which both end edges along the axial direction have an outer side view R.

  The base 11 has a cross-sectional shape in which the concave surface 115 is formed so as to straddle the inner surface 111 and the bottom surface 114 of the square rod. In the region between the base 11 and the shaft 13 and in the region between the pair of arm portions 14 by the concave surface 115, there is a slit-like air gap 15 forming an annular ring about the axial center in cross sectional view. It is formed. In addition, at a portion of the base 11 facing the gap of the plurality of shafts 13, the corner where the inner surface 111 and the concave surface 115 intersect is chamfered.

  The corner 116 between the inner surface 111 of the base 11 and the end surface on one end side is chamfered or chamfered so that the side surface faces in the direction intersecting with the axial direction.

  The second binding rod member 2 is separated from the base member 21 in the same length as the base 11 on the side of the first binding rod member 1, the binding rod element 22 extended from the base member 21, and the base member 21 A shaft 23 serving as a rotation center of the binding rod member 2 and an arm 24 connecting the shaft 23 to the base 21 are provided. Also, the base body 21, the binding rod element 22, the shaft 23 and the arm 24 are integrally molded with resin.

  The binding rod element 22 makes a pair with the binding rod element 12 on the first binding rod member 1 side to constitute an annular binding rod. Each binding rod element 22 temporarily extends straight outward from the outer side surface 212 of the base 21 in a direction perpendicular to the axial direction, and curves and stands up from the outer end of the binding element 22 in a circular arc or an elliptical arc. The upper surface of the rectilinear part of the proximal end of the binding rod element 22 is substantially flush with the top surface 213 of the base 21. Further, the tip end portion of the binding rod element 22 linearly extends so as to be directed to the binding rod element 12 of the first binding rod member 1 which is the counterpart. The extension direction 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, a substantially oval shape, or a substantially rounded square shape which is slightly expanded in the axial direction. The tip of the binding rod element 22 is cut out like a gob.

  The shaft 23 has a substantially cylindrical outer shape of the same diameter as the shaft 13 on the first binding rod 1 side as a whole, and extends along the axial direction. However, as described later, there is a portion where the shaft 23 is partially cut away. The shaft body 23 is divided into a plurality of parts, and except for the middle part along the axial direction of the binding rod member 2, they are aligned on the concentric axis with a predetermined gap. The shafts 23 are disposed so as to fit in the gaps between the plurality of shafts 13 on the first binding rod 1 side. The axial direction dimension of the shaft 23 on the second binding rod member 2 side is approximately equal to that of the gap of the shaft 13 on the first binding rod member 1 side, and the axial member 13 on the first binding rod member 1 side The axial dimension is approximately equal to that of the gap of the shaft 23 on the second binding rod 2 side. The shaft body 23 is biased slightly inward from the base 21 so that the axis thereof is substantially coplanar with the inner side surface 211 of the base 21.

  A recess 231 is formed on one end surface of the shaft body 23, and a protrusion 232 is formed on the other end surface. The concave portion 231 accommodates the convex portion 132 of the shaft 13 on the side of the first binding rod member 1. Conversely, the convex portion 232 is inserted into the concave portion 131 of the shaft 13 on the first binding rod member 1 side. The convex portion 232 is a hemispherical protrusion overlapping the axial center of the shaft 23. The recess 231 is a recess extending outward from the axial center position of the shaft 23 and reaching the outer periphery of the shaft 23, and the inner surface has a diameter equal to the diameter of the protrusions 132 and 232 in the longitudinal sectional view. It has a semi-cylindrical shape, and the groove width is also approximately equal to the diameter of the convex portions 132, 232. The inward end edge of the recess 231 is also in the shape of a semi-arc having a diameter equal to the diameter of the protrusions 132 and 232 in cross section.

  The arm 24 joins both ends along the axial center direction of the shaft 23 to the base 21. The inner side surface 241 of the arm 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 24 connected to the outer side surface 212 of the base 21 is substantially flush with the outer side surface 212 of the base 21. In addition, on the other side of the outer lower surface of each arm 24 along the axial direction, a protrusion 243 that protrudes slightly downward from the bottom surface 214 of the base 21 is formed. As shown in FIG. 8 and the like, the outward projecting portion 243 of the arm portion 24 has a curved surface in which both end edges along the axial direction have an outer side view R.

  The base 21 has a cross-sectional shape in which the concave surface 215 is formed so as to straddle the inner surface 211 and the bottom surface 214 of the square rod. In the region between the base body 21 and the shaft 23 and between the pair of arm portions 24 by the concave surface 215, there is a slit-like air gap 25 forming an annular ring about the axial center of the cross sectional view. It is formed. In addition, at a portion of the base 21 facing the gap between the plurality of shafts 23, the corner where the inner side surface 211 and the concave surface 215 intersect is chamfered.

  The corner 216 between the inner surface 211 of the base 21 and the end surface on one end side is chamfered or chamfered so that the side surface faces in the direction intersecting with the axial direction.

  Thus, as shown in FIGS. 3 and 9, hooks 26 are provided in the middle of the second binding rod member 2 and in the region where the shaft 23 does not exist. The hook 26 is for supporting one end of the coil spring 4 and has a substantially L shape projecting downward from the bottom surface 214 of the vertical cross sectional view base 21.

  The operation member 3 is a covering that holds the shaft bodies 13 and 23 serving as axes of hinges of the binding rod members 1 and 2 and covers the shaft bodies 13 and 23. The operation member 3 includes side walls 31 and 32 extending parallel to the axial direction, and a bottom wall 33 connecting the side walls 31 and 32. In the present embodiment, the side walls 31 and 32 and the bottom wall 33 are integrally molded of resin, and the side walls 31 and 32 and the bottom wall 33 form a substantially C-shaped or U-shaped tubular peripheral wall. The total length of the operation member 3 is larger than that of the bases 11 and 21 of the binding rod members 1 and 2.

  Notches 311 and 321 are formed at a plurality of places on upper end edges of the side walls 31 and 32, respectively. The number of notches 311 in the side wall 31 on one side is the same as the number of arms 14 of the first binding rod member 1, and the number of notches 321 in the side wall 32 on the other side is the arm portions of the second binding rod member 2 The same as the number of 24. Further, the position of the notch 311 in 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 in the side wall 32 on the other side is the second binding rod member 2 The arrangement corresponds to the arrangement of the arms 24 of FIG. Therefore, the notch 311 and the notch 321 are offset in the axial direction. The opening width dimension along the axial center direction of the notches 311 and 321 is somewhat larger than the axial center dimension of the arms 14 and 24. The lower ends of the notches 311 and 321 are inclined end surfaces that descend downward toward the outer side except near the inner side surfaces of the side walls 31 and 32.

  Further, the projections 312, 313, 322, 323 are provided in the side walls 31, 32, at locations axially offset from the locations where the notches 311, 321 are formed. That is, the projections 312 and 313 protrude from the inner side surface of the upper end portion of one side wall 31 toward the inner side surface of the other side wall 32, and the projections 322 and 323 are one side from the inner side surface of the upper end portion of the other side wall 32. It projects toward the inner surface of the side wall 31 of the Here, the dimension in which the protrusions 313 and 323 protrude inward from the inner side surface of the side walls 31 and 32 is larger than the dimension in which the protrusions 312 and 322 protrude inward from the inner side surface of the side walls 31 and 32.

  That the protrusions 312 and 313 on one side and the protrusions 322 and 323 on the other side are opposed along the direction in which the both side walls 31 and 32 are separated (the direction in which the inner side faces of the both sides 31 and 32 face) is there. However, even in such a 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 mutually offset 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 alternately provided along the axial direction.

  The bottom wall 33 connects lower ends of the side walls 31 and 32 to each other, and encloses an inner space of the operation member 3 having a channel shape together with the side walls 31 and 32. The shafts 13 and 23 of the binding rod members 1 and 2 are accommodated in the internal space of the operation member 3. Is the inner dimension between the side walls 31, 32; in other words, the inner dimension of the inner space along the direction in which the both side walls 31, 32 separate is approximately equal to the outer diameter of the shafts 13, 23 of the binding rod members 1, 2? Slightly larger than that. A gap between the projections 312 and 313 projecting from the upper end of the side wall 31 on one side and the side wall 32 on the other side, and projections 322 and 323 projecting from the upper end of the side wall 32 on the other side And the gaps between them (more specifically, the gaps between the protrusions 312 and 313 on one side and the protrusions 322 and 323 on the other side) are both inside the internal space along the direction in which the side walls 31 and 32 are separated. It is narrower than the size. Further, the bottom wall 33 is a substantially partial cylinder having an inner diameter which is substantially equal to or slightly larger than the outer diameter of the shafts 13 and 23. Incidentally, the through-hole 331 formed in the bottom wall 33 at a position immediately below the protrusions 312 and 322 is a hole for demolding for forming the protrusions 312 and 322.

  An internal space surrounded by the peripheral walls 31, 32, 33 of the operation member 3 is closed at both ends along the axial center direction of the operation member 3. One end of the operation member 3 is a handle 34 for the user to hold it. Then, an expanding portion 35 is provided at a position adjacent to the handle 34. The widening portion 35 is a block-like portion extending toward the other end of the operation member 3 and has inclined surfaces 351 and 352 facing outward in the form of a wedge in a plan view on the tip side thereof. . The inclined surfaces 351 and 352 of the expanding portion 35 intersect with each other in the axial direction, and are substantially formed on the inclined surfaces 116 and 216 formed on one end of the bases 11 and 21 of the both binding rod members 1 and 2, respectively. It is parallel. The expanding portion 35 of the operation member 3 and one end of the bases 11 and 21 of the both binding rod members 1 and 2 constitute an operation force conversion mechanism to be described later.

  Therefore, as shown in FIGS. 4 and 9, the hooks 36 are provided in the middle portion of the operation member 3 and in the region where the shaft members 13 and 23 of the binding rod members 1 and 2 do not exist. The hooks 36 are for supporting the other end of the coil spring 4 and have a substantially L shape protruding upward from the upper surface of the bottom wall 33 in the longitudinal sectional view, and the hooks 26 provided on the second binding rod member 2 And face each other along the axial direction.

  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 the concentric axis. The protrusion 132 of the shaft 13 is inserted into the recess 231 of the shaft 23, and the protrusion 232 of the shaft 23 is inserted into the recess 131 of the shaft 13. The shaft bodies 13 and 23 of the double-stitched tacking members 1 and 2 are alternately arranged in close proximity to or close to each other.

  Then, the operation member 3 is assembled so as to hold the shaft bodies 13 and 23 of the both binding rod members 1 and 2. That is, the shaft bodies 13 and 23 of the both binding rod members 1 and 2 are fitted into the internal space surrounded by the side walls 31 and 32 and the bottom wall 33 of the operation member 3. At this time, as shown in FIG. 7 and FIGS. 16 to 19, it is necessary to turn the binding wedge members 1 and 2 in advance so that both binding wedge elements 12 and 22 take an open position. . Otherwise, the outer peripheries of the shafts 13 and 23 of the binding rod members 1 and 2 interfere with the protrusions 313 and 323 of the operation member 3 to properly insert the shafts 13 and 23 into the internal space of the operation member 3 Can not.

  In a state where the operation member 3 covers and holds the shafts 13 and 23 of the both binding rod members 1 and 2, each binding rod member 1 and 2 rotates forward and reverse with the shafts 13 and 23 as rotation axes. It is possible. In addition, the operation member 3 can slide in the axial direction along the shafts 13 and 23 relative to the binding rod members 1 and 2. The projections 312, 313, 322, 323 protruding from the inner surfaces of the side walls 31, 32 of the operating member 3 engage with the shafts 13, 23 of the binding rod members 1, 2, and the shafts 13, 23 are operating members. It prevents you from leaving the internal space of 3. That is, the projections 312, 313, 322, and 323 function as locking portions that prevent the detachment of the operation member 3 from the binding rod members 1 and 2, and in turn, the disassembly of the binding tool 0.

  Further, as shown in FIG. 9, both ends of the coil spring 4 are hooked on the hook 26 provided on the second binding rod member 2 and the hook 36 provided on the operation member 3. The hooks 36 of the operation member 3 are disposed further on the other end side than the hooks 26 of the second binding rod member 2 by fitting the shaft bodies 13 and 23 of the binding rod members 1 and 2 into the operation member 3 .

  The first binding wedge member 1 and the second binding wedge member 2 relatively rotate around the axes of the shafts 13 and 23. Through the pivoting movement, it is possible to open and close the annular binding rod formed by the binding rod element 12 and the binding rod element 22. As shown in FIG. 6 and FIG. 10 etc., when the binding bars 12 and 22 are closed, the tip of the binding element 12 on one side and the tip of the binding element 22 on the other side are combined. As described above, the sheets S overlap in the axial direction, and the removal of the sheet S bound to the binding rod is prevented. As shown in FIGS. 7 and 11 and the like, when the binding bars 12 and 22 are opened, the leading end portions of the both binding eyelid elements 12 and 22 are separated from each other to allow extraction of the paper sheet S.

  The operating member 3 is displaced relative to the binding rod members 1 and 2 in the axial direction, and can selectively take the locking position shown in FIG. 10 and the unlocking position shown in FIG. When the operation member 3 is in the lock position, the notch 311 formed in the side wall 31 on one side is axially offset 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 shifted 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 FIG. 12 to FIG. 15, even if it is attempted to turn the both binding rod members 1 and 2 in the direction to open the binding rods 12 and 22, the arm portions 14 and 24 are side walls of the operation member 3 It collides with the edge of 31, 32 and can not be turned. In other words, the not-cut edges of the side walls 31 and 32 of the operation member 3 serve as a stopper to prohibit the binding rods 12 and 22 from being opened.

  In addition, when the operation member 3 is in the lock 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 The side surfaces 111 and 211 are in contact or in proximity to each other. The expanding portion 35 provided on one end side of the operation member 3 is not necessarily in contact with the one end of the bases 11 and 21 of the both binding rod members 1 and 2 (although they are in proximity). The hooks 36 provided on the operation member 3 are relatively close to the hooks 26 provided on the second binding rod member 2, and the coil springs 4 hooked on both the hooks 26 and 36 do not exert tension.

  When the operating member 3 is slid from the locked position toward the unlocked position, as shown in FIG. 8 and FIG. 11, along the axial center direction of the notch 311 formed in the side wall 31 on one side The arm portion 24 of the binding rod member 2 on the same side coincides with 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 other side wall 32 is also the same. Match to Accordingly, the arms 14 and 24 can enter into the notches 311 and 321. Not only in the air gaps 15 and 25 sandwiched by the pair of arm parts 14 and 24 connected to the same shaft 13 and 23, but by the notches 311 and 321 in the side walls 31 and 32 of the operation member 3 Can also enter the area. As a result, as shown in FIG. 16 to FIG. 19, it is permitted to relatively turn the both binding rod members 1 and 2 to open the binding rods 12 and 22.

  At the same time, in the process of displacing the operation member 3 from the lock position to the unlock position, the inclined surfaces 351, 352 of the widening portion 35 provided on one end side of the operation member 3 , 21 in contact with the inclined surfaces 116 and 216 formed at one end, and further push these substrates 11 and 21 apart in a direction away from each other. Finally, the spread portion 35 of the operation member 3 enters between the inner side surfaces 111 and 211 of the bases 11 and 21 of the both binding rod members 1 and 2. That is, the spreading portions 35 and the ends of the bases 11 and 21 function as an operating force conversion mechanism, and the binding rods 12 and 22 release the operating force for sliding the operating member 3 in the axial direction. It is converted to the force to turn in the direction

  Generally speaking, by displacing the operation member 3 from the lock position to the unlock position, the stopper is retracted along the axial direction from the arms 14 and 24 of the both binding rod members 1 and 2 while the expanding portion 35 spreads the both binding rod members 1 and 2 to open the binding rods 12 and 22. Further, since the hook 36 provided on the operation member 3 moves away from the hook 26 provided on the second binding rod member 2 by the displacement of the operation member 3, the coil spring 4 hooked on both hooks 26 and 36 is stretched. It comes to exert tension.

  While the binding rods 12 and 22 are opened, an elastic biasing force in a direction to displace the operation member 3 from the unlock position toward the locking position, that is, a tensile tension of the coil spring 4 acts. Since the two arms 14 and 24 engage with the opening edges of the notches 311 and 321 of the side walls 31 and 32, the operation member 3 is maintained in the unlocked position. In this state, when the user performs an operation to pinch and close both binding wedge elements 12 and 22 with fingers, the binding wedge members 1 and 2 rotate in the direction in which the binding members 1 and 2 move toward each other, Escape from the notches 311 and 321 of the side walls 31 and 32 of FIG. Therefore, the operating member 3 is allowed to return to the lock position.

  Since the base members 11 and 22 of the binding rod members 1 and 2 are long, even if it is attempted to pinch and close a part of a large number of binding rods, twisting occurs between the portion and the other portion, and binding is performed. There is a possibility that the wedge members 1 and 2 do not rotate in the direction in which the binding rods 12 and 22 are closed. However, the elastically urged operating member 3 tends to be displaced toward the lock position, and the force is applied via the opening edges of the notches 311 and 321 of the side walls 31 and 32 to the arms 14 of the binding wedge members 1 and 2, In order to push back 24 inward, the twisting of the base members 11 and 21 is suppressed, and the entire binding rod members 1 and 2 can be rotated to simultaneously close all binding rods 12 and 22.

  In the present embodiment, a part of the shaft bodies 13 and 23 having a cylindrical outer shape is cut out so as to form a fan-like shape in cross section. As shown in FIG. 14, FIG. 15, FIG. 18 and FIG. 19, the notches 133, 233 are generally fan-shaped and expand as they extend outward in the radial direction from near the axial center of the cross section view shafts 13, 23. The magnitude of the central angle is greater than 90 ° and less than 180 °. That is, the cross-sectional shape of the part in which the notch 133,233 is formed in the axial bodies 13 and 23 becomes a fan shape whose central angle is larger than 180 degrees and smaller than 270 degrees.

  When the shafts 13 and 23 are fitted in the internal space between the side walls 31 and 32 of the operation member 3, the notches 133 and 233 open toward the side where both binding bars 12 and 22 open, and the notches 133, The projections 313 and 323 having large projecting dimensions are inserted into the portion 233. The notches 133 and 233 are equivalent to or slightly more than the displacement amount when the operation member 3 slides between the lock position and the unlock position along the axial center direction of the shafts 13 and 23. It is greatly expanded. The projections 313, 323 in the notches 133, 233 do not prevent 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.

  Outer dimensions (both side walls) of the portions where the notches 133 and 233 of the shafts 13 and 23 are formed, viewed from the vertical direction which is the direction of inserting and removing the shafts 13 and 23 with (the internal space of) the operation member 3 The outer dimensions (W, W) along the separation direction of 31 and 32 become smaller when the binding bars 12 and 22 are opened as shown in FIGS. 18 and 19, and as shown in FIGS. 14 and 15 When the binding rods 12 and 22 are closed, they become larger. The vertical direction referred to here is a direction substantially orthogonal to the axial center direction and the separation direction of both side walls 31 and 32 of the operation member 3, and when inserting and removing the shafts 13 and 23 with respect to the operation member 3, In the direction in which the bodies 13, 23 approach towards the bottom wall 33 or away from the bottom wall 33. In any case, the external dimensions W and W ′ of the portions where the notches 133 and 233 of the shafts 13 and 23 are formed are the small protrusions 312 and 322 and the large protrusions 323 and 313 which are opposed in the operation member 3. Larger than the gap between

  In addition, the lower surfaces 314 and 324 of the protrusions 313 and 323 that fit into the notches 133 and 233 face the bottom wall 33 side, that is, downward along the vertical direction in which the shaft members 13 and 23 are inserted into and removed from the operation member 3. There is. And as shown in FIG.14 and FIG.15, in the state which takes the posture which the binding bars 12 and 22 closed, the end surface 134,234 which faces the upper part of the notch 133,233 of the shaft bodies 13 and 23 is this protrusion 313 , 323 and in contact with the surface. Accordingly, in this state, it is impossible, or at least extremely difficult, to evacuate the shafts 13 and 23 from the internal space of the operation member 3. In other words, even if a large impact is applied to the binding tool 0 (the binding rod members 1 and 2 or the operation member 3) closing the binding rods 12 and 22 and binding the sheet S, the operation member 3 There is no possibility that the binding tool 0 is disassembled by being detached from the binding rod members 1 and 2 and the bound paper sheets S are not separated.

  As described above, in order to fit the shafts 13 and 23 into the internal space of the operation member 3 or to withdraw the shafts 13 and 23 from the internal space of the operation member 3, as shown in FIGS. The binding rod members 1 and 2 are rotated so that the binding rods 12 and 22 are open. In other words, the outer dimensions W of the shafts 13, 23 seen from the vertical direction become smaller than the outer dimensions W 'when the binding rods 12, 22 are closed, and the end surfaces 134, 234 of the notches 133, 233 Are separated from the lower surfaces 314, 324 of the protrusions 313, 323 so as to face in a different direction from the lower surfaces 314, 324. Thereby, with the elastic deformation of the operating member 3, the shafts 13, 23 are inserted from above into the internal space of the operating member 3, or conversely, the shafts 13, 23 are withdrawn upward from the internal space of the operating member 3. It is possible to

  In the binding tool 0 of the present embodiment, the operation member 3 is provided with the restraint member 37 for suppressing the displacement of the operation member 3 from the lock position to the unlock position unexpectedly. As shown in FIG. 4, FIG. 6, FIG. 7, FIG. 9, and FIG. 20, the restraint member 37 has side walls 371, 372 spaced apart and parallel in the same direction as the separation direction of both side walls 31, 32 of the operation member 3. A top wall 373 connecting the side walls 371 and 372, axial holes 374 and 375 penetrating the side walls 371 and 372 respectively provided in the side walls 371 and 372, and a projection 376 projecting from the top wall 373 Prepare. In the present embodiment, the side walls 371, 372, the top wall 373, the axial holes 374, 375, and the projecting pieces 376 are integrally molded of resin.

  The side walls 371, 372 and the top wall 373 of the restraining member 37 form a circumferential wall having a substantially U-shaped cross section. The internal dimension along the separation direction of both side walls 371, 372 is approximately equal to or slightly larger than the external dimension along the separation direction of both side walls 31, 32 of the operation member 3. The constraining member 37 covers one end of the operating member 3 so that the side walls 371 and 372 thereof abut the side walls 31 and 32 of the operating member 3 from the outside.

  On the outer side surfaces of the side walls 31, 32 close to the inner side surfaces of the side walls 371, 372 of the restraint member 37 at one end of the operation member 3, there are provided pivots 315, 325 projecting outward. The respective support shafts 315, 325 are respectively inserted into the shaft holes 374, 375 of the respective side walls 371, 372. The constraining member 37 can be rotated about an axis extending along the direction in which the both side walls 31 and 32 are separated with respect to the operation member 3 through the concavo-convex fitting of the support shafts 315 and 325 and the shaft holes 374 and 375. Support. The restraint member 37 supported at one end of the operation member 3 forms a part of the handle 34 and can selectively take the restraint position shown in FIG. 9 and the non-restraint position shown in FIG.

  When the operation member 3 is in the lock position, a gap 39 is formed between one end of the shaft 23 of the binding rod member 2 inserted in the internal space of the operation member 3 and the partition 38 at one end of the operation member 3. Is formed. The air gap 39 expands in the axial direction to the same extent as or slightly larger than the amount of displacement when the operating member 3 slides between the lock position and the unlock position. In the process of sliding movement of the operation member 3 from the lock position toward the unlock position, as a result of the operation member 3 being displaced relative to the binding rod members 1 and 2, the gap 39 is reduced, that is, the partition 38 is a shaft Approach one end of 23 Conversely, in the process of sliding the operating member 3 from the unlock position toward the lock position, the air gap 39 is enlarged, that is, the partition 38 moves away from one end of the shaft 23.

  The restraint member 37 supported at one end of the operation member 3 is supported to prevent the operation member 3 in the lock position from being displaced toward the unlock position, that is, to hold the operation member 3 in the lock position. The projecting pieces 376 are inserted into the gap 39 between the partition 38 of the operation member 3 and the shaft 23 of the binding rod 2 as shown in FIG. When the restraining member 37 assumes the restraining position, one end of the shaft 23 of the binding rod member 2 collides with the projection 376 of the restraining member 37 from the axial center direction even if the operating member 3 tries to be displaced toward the unlocking position. And the air gap 39 can not be reduced any further. Therefore, the operating member 3 in the lock position is prevented from being displaced toward the unlock position, and the closed binding rods 12 and 22 do not open unintentionally.

  When it is desired to displace the operation member 3 from the lock position to the unlock position and release the binding rods 12 and 22, the restraint member 37 is pivoted about the support shafts 315 and 325 as shown in FIG. The projecting piece 376 is extracted from the air gap 39 between the partition wall 38 and the shaft body 23 as shown in FIG. Then, after the restraint member 37 is retracted to the non-restraint position, the operation member 3 may be displaced toward the unlock position.

  In the present embodiment, a pair of binding rod members 1 and 2 which are relatively rotatable around their axes via hinges and which open and close the binding rods 12 and 22 through the rotation operation, and the binding rod member 1 , 2 relative to each other, and selectively selects the lock position for prohibiting the binding rod members 1 and 2 from pivoting in the direction of opening the binding rods 12 and 22 and the unlock position for permitting this. The same operation member 3 is inserted into the space 39 between the operation member 3 which can be taken, the at least one binding rod member 2 of the pair of binding rod members 1 and 2 and the operation member 3 in the locked position. A binding tool 0 is provided that includes a restraining member 37 that prevents the 3 from being displaced toward the unlocking position.

  According to the present embodiment, when the binding tool 0 for binding the paper sheet S is stored in a bag, a rucksack, etc., the operation member 3 is unintentionally displaced from the lock position to the unlock position. As a result, the binding rods 12 and 22 are prevented from opening. Therefore, there is no chance that the sheet S will be accidentally released in a bag or a rucksack.

The operation member 3 is slidable relative to the binding rod members 1 and 2 along the axial direction, and the binding rod members 1 and 2 rotate in a direction to open the binding rods 12 and 22. It has a stopper to prohibit. Specifically, the notches 311 and 321 are formed in 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 prohibited from opening the binding rods 12 and 22. It is a stopper for When the operation member 3 is in the lock position, the stopper contacts the predetermined portions 14 and 24 of the binding rod members 1 and 2, while when the operation member 3 is in the unlock position, the binding rod member 1 The two predetermined portions 14 and 24 fit in the notches 311 and 321, that is, even when the binding members 1 and 2 are rotated, the stoppers do not contact the predetermined portions 14 and 24 of the binding members 1 and 2. Since the basic configuration of the binding tool 0 is completed by the binding rod members 1 and 3 and the operation member 3, the number of parts is reduced.

  The restraining member 37 has one end 23 of the binding rod member 2 along the axial direction and one end 38 of the operation member 3 in the locked position along the axial direction. It is worthy of 39 between. The restraining member 37 is located at a restraining position where it is inserted between the end 23 on one side of the binding rod member 2 and the end 38 on one side of the operation member 3, and between the two 23 and 38 It is supported by the operation member 3 so as to be rotatable between the escape position and the unrestrained position, and the user can easily operate the restraint member 37 with fingers.

  The binding tool 0 of the present embodiment is interposed between the binding rod members 1 and 2 and the operation member 3, and is configured to displace the operation force for displacing the operation member 3 from the lock position toward the unlock position. There is provided an operation force conversion mechanism for converting the binding rod members 1 and 2 into a force for rotating the binding rods 12 and 22 in the opening direction, and the binding rod is moved by the operation of displacing the operation member 3 to the unlock position. 12, 22 can be opened. For this reason. Even if a large number of binding rods 12 and 22 exist, the operation of simultaneously opening them is easy and the convenience is high.

  Also, in the present embodiment, a pair of binding wedge members 1 and 2 that are relatively rotatable around their axes via hinges and that open and close the binding rods 12 and 22 through the pivoting operation are separated from each other A cover 3 having a pair of side walls 31, 32 arranged side by side, and holding in the space between the side walls 31, 32 the shaft members 13, 23 as the axes of the hinges of the binding rod members 1, 2; In a state in which the binding rod members 1 and 2 are rotated so as to close the binding rods 12 and 22 when viewed from the direction of inserting and removing the shaft bodies 13 and 23 with respect to the cover 3. In a state in which the binding rod members 1 and 2 are rotated so that the outer dimensions W ′ of the shaft bodies 13 and 23 along the direction in which the pair of side walls 31 and 32 separates open the binding rods 12 and 22. A portion which is larger than the outer dimension W along the separation direction of the shaft bodies 13 and 23 And to constitute a binding fastener 0 shaft 13, 23 is provided.

  According to the present embodiment, in a state in which the binding rods 12 and 22 are bound, the shafts 13 and 23 escape from the covering 3 which grips and covers the shafts 13 and 23 of the binding rod members 1 and 2 Can be effectively deterred. Therefore, even if the binding tool 0 drops or receives a strong impact, the binding tool 0 binding the paper sheet S is not disassembled, and the paper sheet S is not separated.

  The shafts 13 and 23 have an outer shape in which a part thereof is cut out so that a cross section taken along a plane orthogonal to the axial direction thereof forms a substantially fan shape. More specifically, the gap between the locking portion 313, 323 and the other side wall 32, 31 is made by the locking portion 313, 323 which protrudes from one of the side walls 31, 32 of the cover 3 toward the other. Is smaller than the inner dimension of the space between the pair of side walls 31, 32 along the separation direction of the side walls 31, 32, and the shaft 13 in which the locking portion 313, 323 is accommodated in the space , 23 prevents the shafts 13, 23 from escaping from the space.

  In particular, in the present embodiment, the contact surfaces 314, 324 of the locking portions 313, 323 face downward, and the cut-outs 133, 233 of the shafts 13, 23 in a state in which the binding bars 12, 22 are closed. The end faces 134, 234 face upward, and these faces 314, 324, 134, 234 face in the direction of inserting and removing the shafts 13, 23 with respect to the cover 3. In the state in which the binding bars 12 and 22 are closed, the locking portions 313 and 323 and the shafts 13 and 23 are in surface contact via the surfaces 314, 324, 134 and 234, so It is reliably prevented that the shafts 13, 23 inserted in the inner space escape from the space.

  By covering the shafts 13 and 23 of the hinges, the operating member 3 which is a cover reduces the possibility of giving the user a feeling of unevenness of the shafts 13 and 23. Moreover, by sliding the operation member 3 in the axial direction, switching between the open state and the closed state of the binding bars 12 and 22 can be easily performed.

  The hinge shafts 13, 23 have a substantially cylindrical outer periphery (except for the notches 133, 233), and the operation member 3 engages with the hinge shafts 13, 23 so as to hold the hinge shafts 13, 23. The shape of the operation member 3 is not complicated complicatedly. In addition, the outer peripheral surface of the operation member 3 can be smoothed to improve the touch.

  Each of the pair of binding rod members 1 and 2 is provided with the shafts 13 and 23, and the operation member 3 holds the shafts 13 and 23 in series in such a manner that they can rotate relative to each other. There is no need for a long thin rod which penetrates all of the shafts 13 and 23.

  The protrusions 132 and 232 are formed on one of the end faces of the both shafts 13 and 23 facing each other, and the recesses 131 and 231 for receiving the protrusions 132 and 232 are formed on the other. Since the engaging structure with the concave portions 131 and 231 is configured, it contributes to the facilitation of the assembly work of the binding tool 0, and the integrity as the binding tool 0 is enhanced, and any one of the binding rod members 1 and 2 is dropped There is less risk of

  Further, the binding tool 0 of the present embodiment includes an elastic biasing member 4 which elastically biases the operation member 3 from the unlock position toward the lock position. Due to the presence of the resilient biasing member 4, the binding rod members 1 and 2 are indirectly resiliently biased in the direction to close the binding rods 12 and 22, and the operation to close the open binding rods 12 and 22 is easy Become.

  The present invention is not limited to the embodiments detailed above. In the above embodiment, although the first binding wedge member 1 and the second binding wedge member 2 are separate members in the above embodiment, they may be integrally formed through a resin hinge.

  In the above embodiment, the operation member 3 itself is provided with the stopper, 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. .

  The resilient biasing member is not limited to the coil spring 4. You may employ | adopt the thing of the other aspect, for example, a leaf | plate spring, a resin spring etc. It is also conceivable to interpose an elastic biasing member that generates a compressive elastic force, that is, a compression coil spring, between one end side of the operation member and one end side of (the base of) the binding rod member.

  In the above embodiment, in the state where the operation member 3 is in the lock position and the binding rods 12 and 22 are closed, (the projecting piece 376 of) the binding member 37 is (the shaft end of the shaft 23 of one binding rod member 2) The displacement of the operation member 3 from the lock position to the unlock position is suppressed by inserting it between the and the operation member 3 (the partition 38 of the operation member 3) and contacting both the binding rod member 2 and the operation member 3 The On the other hand, the restraining member is inserted between both the binding rod members and the operation member, and abuts on the both binding rod members and the operation member to restrain the displacement of the operation member 3 from the lock position to the unlock position. It is also possible.

  In the embodiment described above, the restraint member 37 is separate from the operation member 3, but both may be integrally molded via a resin hinge.

  In the above embodiment, the constraining member 37 is supported by the operating member 3 so as to be rotatable with respect to the operating member 3, but the constraining member is slid relative to the operating member (for example, along the vertical direction) The operating member may be supported so as to be movable. Furthermore, it is also conceivable to support the binding member on the binding rod member. In any case, the restraining member may be removable from the operating member as long as the restraining member can be displaced relative to the binding rod member and the operating member between the restraining position and the non-restraining position. .

  In the above-described embodiment, a part of the shaft bodies 13 and 23 having a cylindrical outer shape is cut out so as to form a generally fan-shaped cross sectional view and the shaft bars 13 and 23 of the state in which the binding rods 12 and 22 are closed The outer dimension W 'of the shafts 13, 23 seen from the direction of inserting and removing the operating member 3 as a cover) is larger than the outer dimensions W of the shafts 13, 23 in the state where the binding rods 12, 22 are opened. I was trying to get bigger. Besides, by forming the cross-sectional shape of the shaft into an oval or other non-circular shape, the outer dimension of the shaft with the binding closed is larger than that with the binding open. It can be considered to be configured to be

  Further, FIGS. 21 to 25 show one modification of the present invention. The shapes of the shafts 13 and 23 provided in the binding rod members 1 and 2 are different between this modification and the above embodiment. In the shaft members 13 and 23 of the binding rod members 1 and 2 in this modification, the sections 135 and 235 which can not be pulled out with respect to the space between the side walls 31 and 32 of the operating member 3 which is a covering An area 136, 236 which can be pulled out with respect to the space between the side walls 31, 32 is provided. The latter sections 136, 236 are adjacent to the former sections 135, 235 along the axial direction of the shafts 13, 23.

  In the former area 135, 235, the upper end surface and upper right portion of the shaft bodies 13, 23 having a cylindrical outer shape are respectively notched in an angle shape to form upward facing end surfaces 1351, 1352, 2351, 2352 It is

  The cross-sectional shape of the latter area 136, 236 which leads to the former area 135, 235 is smaller than the cross-sectional shape of the former area 135, 235. In particular, the upper edge of the latter area 136, 236 is cut off, and the upper surface 1361, 2361 is lower than the upper edge of the former area 135, 235. In addition, the portions under the upper end faces 1351 and 2351 of the former sections 135 and 235 are cut off, and the outer side surfaces 1362 and 2362 are inward of the outer circumferences of the cylindrical shafts 13 and 23. There is. When the binding bars 12 and 22 are closed, the lower portions 1363 and 2363 of the outer side surfaces 1362 and 2362 are inclined so as to face obliquely downward. Furthermore, inclined surfaces 1364 and 2364 are formed by cutting off the corners where the upward facing end surfaces 1352 and 2352 and the outer circumferences of the shaft bodies 13 and 23 intersect. The inclined surfaces 1364 and 2364 face obliquely upward with the binding bars 12 and 22 closed.

  As shown in FIGS. 22 and 23, when the binding rods 12 and 22 are in the closed position and the operation member 3 is in the lock position, the protrusions 312 and 313 project from the inner surface of the side walls 31 and 32 of the operation member 3. 322, 323 engage with the non-retractable sections 135, 235 of the shafts 13, 23 of the binding rod members 1, 2. At this time, the lower surfaces 314 and 324 of the protrusions 313 and 323 serving as the locking portions and the upwardly facing end surfaces 1352 and 2352 formed in the sections 135 and 235 of the shaft bodies 13 and 23 contact with each other. Accordingly, in this state, it is impossible, or at least extremely difficult, to evacuate the shafts 13 and 23 from the internal space of the operation member 3.

  In addition, the lower surfaces 316 and 326 of the protrusions 312 and 322 and the upward end surfaces 1351 and 2351 formed in the corresponding sections 135 and 235 of the shafts 13 and 23 are in close proximity to each other. The protrusions 312 and 322 in the present modification have larger projecting dimensions than those in the above embodiment. When a large external force is applied to the binding rod elements 12 and 22 outward, the upward facing end surfaces 1351 and 2351 collide with these protrusions 312 and 322 on the side away from the binding rod elements 12 and 22, The shafts 13 and 23 are prevented from coming off the operating member 3.

  As in the above embodiment, when the operation member 3 is slid from the lock position toward the unlock position, the binding rod members 1 and 2 rotate and the binding rods 12 and 22 are opened. At that time, since the operation member 3 is displaced relative to the binding rod members 1 and 2 along the axial direction, as shown in FIG. 24 and FIG. The non-retractable sections 135, 235 of the body 13, 23 transition to the removable sections 136, 236 and come into engagement with the sections 136, 236. At this time, the projections 312, 313, 322, 323 of the operation member 3 and the upper end surfaces 1351, 351 of the shaft bodies 13, 23 do not abut on each other.

  Moreover, the outer periphery of the said area 136,236 of the shaft 13 and 23 is partially cut off, and the cut-off surface 1363, 1364, 2363 is carried out with rotation of the binding rod members 1 and 2 and the shaft 13 and 23. , 2364 are substantially parallel to the vertical direction. As a result, the outer dimensions (the outer dimensions along the separation direction of the both side walls 31 and 32) W of the sections 136 and 236 when viewed from above and below are the protrusions 312 and 322 and the protrusions 323 and 313 in the operation member 3. Although it is slightly larger than the gap between them, it is smaller than the outer dimension W 'of the non-retractable area 135, 235 shown in FIGS.

  When the operation member 3 is slid from the unlock position toward the lock position, the binding rod members 1 and 2 rotate to close the binding rods 12 and 22. At that time, the operation member 3 is displaced along the axial direction relative to the binding rod members 1 and 2, and the projections 312, 313, 322, 323 can be pulled out of the shaft members 13, 23 in the removable portion 136, At the transition from 236 to the removable zone 135, 235, the zone 135, 235 is again engaged.

  In assembling the binding tool 0 of the present modification, the shaft 13 of the first binding wedge member 1 and the shaft 23 of the second binding wedge member 2 are disposed on the concentric axis, and both binding wedge elements 12 After the binding rod members 1 and 2 are turned so that the posture 22 is open, the operation member 3 is assembled so as to hold the shafts 13 and 23. When assembling the operation member 3, that is, when inserting the shaft members 13, 23 into the internal space of the operation member 3, the detachable sections 136, 236 of the shaft members 13, 23 are protrusions 312, 313, 322 of the operation member 3. , And push the area 136, 236 into the gap between the projections 312, 322 and the projections 323, 313.

  The binding tool 0 according to the present modification is relatively rotatable around its axis via a hinge, and the pair of binding wedge members 1 and 2 which open and close the binding rods 12 and 22 through the pivoting operation. A covering having a pair of side walls 31, 32 spaced apart and juxtaposed, and holding a shaft body 13, 23 as an axis of the hinge in the binding rod members 1, 2 in a space between the side walls 31, 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 members 13 and 23 are inserted into and removed from the covering 3. The binding rod members 1 and 2 are rotated so that the outer dimension W 'along the direction in which the pair of side walls 31 and 32 of the shaft bodies 13 and 23 separate in the state separate the binding rods 12 and 22. Such that it becomes larger than the outer dimension W along the separation direction of the shafts 13 and 23 in the state Position (the valve slide non zones 135, 235 and tuning slide capable zones 136 and 236), in which are provided on a shaft 13, 23.

  And, by the locking portions 313 and 323 protruding from one of the side walls 31 and 32 of the covering 3 toward the other, the gap between the locking portions 313 and 323 and the other side walls 32 and 31 is a pair of The inner dimension of the space between the side walls 31 and 32 is smaller than the inner dimension along the separation direction of the side walls 31 and 32, and the engaging portions 313 and 323 engage with the shaft bodies 13 and 23 accommodated in the space. By fitting together, the escape of the shafts 13 and 23 from the space is suppressed.

  The abutment surfaces 314, 324 of the locking portions 313, 323 face downward, and are formed in the shaft bodies 13, 23 (non-extractable sections 135, 235) in a state in which the binding bars 12, 22 are closed. The end surfaces 1352 and 2352 face upward, and the surfaces 314, 324, 1352 and 2352 face each other along the direction in which the shaft 13 and 23 are inserted into and removed from the cover 3. In a state in which the binding bars 12 and 22 are closed, the locking portions 313 and 323 and the shafts 13 and 23 are in surface contact via the surfaces 314, 324, 1352 and 2352, so It is reliably prevented that the shafts 13, 23 inserted in the inner space escape from the space.

  Further, the cover 3 is slidable relative to the binding rod members 1 and 2 along the axial direction, and the binding rod members 1 and 2 rotate in a direction to open the binding rods 12 and 22. Control member that can selectively take a lock position that prohibits locking and an unlock position that allows this, and the shaft 13, 23 can be removed from the space between the side walls 31, 32 of the cover 3. Indelible sections 135, 235 and sections 136, 236 which can be drawn against the space between the side walls 31, 32 of the cover 3 adjacent to the sections 135, 235 along the axial direction are provided. When the cover 3 is in the locked position, the locking portions 313 and 323 pull out the shaft bodies 13 and 23 while taking a posture in which the binding rod members 1 and 2 close the binding bars 12 and 22. While engaging in indelible areas 135, 235 When the binding rod members 1 and 2 take a posture to open the binding rods 12 and 22 when the cover 3 is in the unlocking position, the locking portions 313 and 323 pull the shaft members 13 and 23 out. The outer dimension W along the direction in which the pair of side walls 31 and 32 of the removable sections 136 and 236 of the shaft 13 and 23 move to the cover is a transition to the different sections 136 and 236. The external dimensions W 'of the non-retractable sections 135, 235 of the shafts 13, 23 when the 3 is in the lock position is smaller than the external dimension W' along the separation direction.

  In addition, when the cover 3 is in the locked position, the projections 312 and 322 protruding from the other side wall 31 and 32 of the cover 3 toward the one side are the displacements of the shaft bodies 13 and 23. As it is in close proximity to the inoperable areas 135 and 235, the shafts 13 and 23 may come out of the cover 3 even if a large external force acting outward is applied to the closed binding rods 12 and 22. Are suppressed.

  In addition, the specific configuration of each part can be variously modified without departing from the spirit of the present invention.

  The present invention can be applied to a binding tool for binding paper sheets.

DESCRIPTION OF SYMBOLS 0 ... Binding tool 1, 2 ... Binding rod member 12, 22 ... Binding rod 13, 23 ... Shaft body 133, 233 ... Notch 134, 234 ... End surface 3 ... Operation member (cover)
31, 32 ... side wall 33 ... bottom wall 313, 323 ... protrusion (locking portion)
314, 324: Abutment surface 37: Restraint member 376: Protrusive piece 38: Partition wall 39: Gap between the binding rod member and the operation member in the lock position 4: Elastic biasing member S: Paper sheet

Claims (7)

A pair of binding wedge members which are relatively rotatable about their axes via hinges and which open and close the binding rods through the pivoting movement;
A cover having a pair of side walls standing apart from each other, the space between the side walls holding a shaft serving as an axis of the hinge in the binding rod member;
In a direction in which the pair of side walls of the shaft body move in a state in which the binding rod member is rotated so as to close the binding rod when viewed from the direction of inserting and removing the shaft body from the cover A binding tool in which the shaft body has a portion whose outer size is larger than the outer size of the shaft body in the separated direction in a state in which the binding rod member is rotated so as to open the binding rod. . The binding tool according to claim 1, wherein the shaft body has an outer shape partially cut away so that a cross section taken along a plane orthogonal to the axial direction thereof forms a substantially fan shape. With the locking portion protruding from one side to the other of the side wall of the cover, the clearance between the locking portion and the other side wall is an internal dimension along the separation direction of both side walls of the space between the pair of side walls It is narrower than
The binding tool according to claim 1 or 2, wherein the locking portion suppresses the escape of the shaft from the space by engaging with the shaft housed in the space. The binding tool according to claim 3, wherein the locking portion and the shaft body make surface contact in a state in which the binding rod member is rotated so as to close the binding rod. The surface of the locking portion in contact with the shaft in a state in which the binding rod member is rotated so as to close the binding rod faces the direction in which the shaft is inserted into and removed from the cover. The binding tool according to claim 3 or 4. The cover is slidable along the axial direction with respect to the binding rod member, and the locking position for permitting the binding rod member to rotate in the direction for opening the binding rod is permitted. It is an operation member that can be taken selectively with the unlock position,
An area in which the shaft can not be separated with respect to the space between the side walls of the cover, and an area in which the area adjacent to the same area along the axial direction can be extracted with respect to the space between the side walls of the cover And are provided,
When the covering member is in the locking position, the locking portion engages the non-extractable area of the shaft while the binding rod member takes a posture to close the binding rod.
When the cover is in the unlock position, the locking portion transitions to an area where the shaft can be pulled out while the binding rod member takes a posture to open the binding rod, and the shaft at this time The external dimension of the removable area along the spacing direction of the pair of side walls is greater than the external dimension of the non-extractable area of the shaft when the covering is in the locked position. The binding according to claim 3, 4 or 5, which is smaller. The fastener according to claim 6, wherein when the cover is in the locked position, a protrusion projecting from the other side wall of the cover toward the other is in close proximity to the non-separable area of the shaft.

Images