JP7062221B2 - Binding tool - Google Patents

Description

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

The following patent documents disclose a ring binding tool capable of binding paper leaves such as loose-leaf and clear book refills. The binding tool comprises a set of binding rod members that can rotate relative to their axial center via a hinge, and an operating member that can be displaced relative to the binding rod member along the axial direction. .. The operating member prohibits the binding rod member from rotating in the direction of opening the binding rod at the locked position, and allows the binding rod member to rotate in the same direction at the unlocked position. If the user slides the operating member from the locked position to the unlocked position, the binding rod can be opened and the paper sheets can be replaced arbitrarily.

The above-mentioned binding tool has excellent convenience that the binding rod can be easily opened. On the other hand, when it is stored in a bag or rucksack, a strong external force acts on the operating member and it is displaced to the unlocked position. The possibility that the kind will fall apart cannot be completely denied.

Japanese Patent No. 5590142 Japanese Patent No. 5590143

The present invention is intended to prevent the operating member of the binding tool from being unintentionally displaced from the locked position to the unlocked position.

In the present invention, the binding rod can be relatively rotated around its axis via a hinge, and a set of binding rod members that open and close the binding rod through the rotation operation and the binding rod member can be relatively displaced with respect to the binding rod member. Of the set of binding rod members, an operating member that can selectively take a lock position that prohibits the binding rod member from rotating in the direction of opening the binding rod and an unlock position that allows the binding rod member to rotate. A binding tool including a restraining member that prevents the operating member from being displaced toward the unlocked position by inserting it between at least one of the operating members and the operating member at the locked position is configured.

The operating member is slidable with respect to the binding rod member along the axial direction, and has a stopper that prohibits the binding rod member from rotating in a direction in which the binding rod is opened. When the operating member is in the locked position, the stopper contacts a predetermined portion of the binding rod member, while when the operating member is in the unlocked position, the stopper is a predetermined portion of the binding rod member even if the binding rod member is rotated. Assuming that the binding rod member, the operating member, and the restraining member do not come into contact with the binding tool, the basic configuration of the binding tool can be completed, and the number of parts can be reduced.

The restraining member is, for example, between one end of the binding rod member along the axial direction and one end of the operating member at the lock position along the axial direction. It is something that goes into. In this case, the restraining position is a restraining position where the restraining member is inserted between one end of the binding rod member and one end of the operating member, and a non-constraining position where the restraining member escapes from between the two. It is preferable that it is supported by an operating member so that it can rotate between them.

Further, the direction in which the binding rod is released by the operating force that is interposed between the binding rod member and the operating member and displaces the operating member from the locked position to the unlocked position. If it is equipped with an operating force conversion mechanism that converts the force to rotate, the binding rod can be kept in the closed state by placing the operating member in the locked position, and the operating member can be moved from the locked position to open the binding rod. In the process of displacing to the unlocked position, the binding rod member naturally rotates relative to each other, and the binding rod can be opened.

According to the present invention, it is possible to prevent the operating member of the binding tool from being unintentionally displaced from the locked position to the unlocked position.

The perspective view which shows the ring notebook which used the binding tool in one Embodiment of this invention. The whole perspective view of the binding tool of the same embodiment. The perspective view which shows the binding rod member of the binding tool of the same embodiment. The perspective view which shows the operation member of the binding tool of the same embodiment. An exploded perspective view of a main part of the binding tool of the same embodiment. The main part perspective view of the binding tool of the same embodiment. The main part perspective view of the binding tool of the same embodiment. The figure which shows the shape and the positional relationship of the arm part of the binding rod member, and the notch of the operation member in the binding tool of the same embodiment. The vertical sectional view of the binding tool of the same embodiment. The main part plan view of the binding tool of the same embodiment. The main part plan view of the binding tool of the same embodiment. A cross-sectional view taken along the line AA of the binding tool of the same embodiment. BB line cross-sectional view of the binding tool of the same embodiment. A cross-sectional view taken along the line CC of the binding tool of the same embodiment. FIG. 4 is a cross-sectional view taken along the line DD of the binding tool of the same embodiment. EE line cross-sectional view of the binding tool of the same embodiment. FF line cross-sectional view of the binding tool of the same embodiment. GG line cross-sectional view of the binding tool of the same embodiment. FIG. 3 is a cross-sectional view taken along the line OH of the binding tool of the same embodiment. The vertical sectional view of the binding tool of the same embodiment. The main part perspective view which shows the binding rod member which concerns on one of the modification of this invention. Cross-sectional view of the binding tool of the same modification. Cross-sectional view of the binding tool of the same modification. Cross-sectional view of the binding tool of the same modification. Cross-sectional view of the binding tool of the same modification.

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 °.

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.

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.

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 set.

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.

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.

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, slightly protruding 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.

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.

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.

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.

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 set.

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. 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.

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.

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, a protruding portion 243 is formed on the outer lower surface of each arm portion 24 on the other end side along the axial direction, slightly protruding downward from the bottom surface 214 of the substrate 21. 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.

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 a 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

While the operating member 3 covers and holds the shaft bodies 13 and 23 of the double binding rod members 1 and 2, each binding rod member 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.

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. ..

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 both binding rod elements 12 and 22 are separated from each other to allow the paper leaves S to be extracted.

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 two 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.

In addition, when the operating member 3 is in the locked position and the binding rods 12 and 22 are closed, the substrate 11 of the first binding rod member 1 and the substrate 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 expansion 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.

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.

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 movement.

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.

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, the 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 operation 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.

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 picked and closed, a twist occurs between the relevant portion and another portion, 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.

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 °.

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.

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.

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 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 leaves 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.

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.

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.

The side walls 371 and 372 of the restraint 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.

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 of 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.

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.

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 restraint member 37 takes this restraint position, one end of the shaft body 23 of the binding rod member 2 collides with the projecting piece 376 of the restraint member 37 from the axial direction even if the operation member 3 tries to be displaced toward the unlock position. 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.

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.

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 , And the locking position that prohibits the binding rod members 1 and 2 from rotating in the direction of opening the binding rods 12 and 22 and the 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.

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.

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 and the opening of the rods 12 and 22 is prohibited. 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.

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.

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.

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. 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 with 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.

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.

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.

In particular, in the present embodiment, the notches 133 and 233 of the shaft bodies 13 and 23 in a state where the contact surfaces 314 and 324 of the locking portions 313 and 323 face downward and 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.

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.

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. Further, the outer peripheral surface of the operating member 3 can be smoothed to improve the feel.

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.

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.

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.

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.

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. ..

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).

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 abutting on 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.

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.

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. ..

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.

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.

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.

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.

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.

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.

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.

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 dimension W'of the non-detachable areas 135 and 235 shown in FIGS. 22 and 23.

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.

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 are 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 and 236 are pushed into the gap between the protrusions 312 and 322 and the protrusions 323 and 313 in accordance with the positions of 323.

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 that has a pair of side walls 31 and 32 that stand side by side at a distance, and holds 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.

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.

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.

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, the binding rod members 1 and 2 are engaged with the binding rods 12 and 22 while the covering body 3 is in the unlocked position. 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.

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.

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 leaves.

0 ... Binding tool 1, 2 ... Binding rod member 12, 22 ... Binding rod 13, 23 ... Shaft body 133, 233 ... Notch 134, 234 ... End face 3 ... Operating member (cover)
31, 32 ... Side wall 33 ... Bottom wall 313, 323 ... Protrusion (locking part)
314, 324 ... Contact surface 37 ... Restraining member 376 ... Projection piece 38 ... Partition 39 ... Clearance between the binding rod member and the operating member at the locked position 4 ... Elastic urging member S ... Paper sheets

Claims (2)

A set of binding rod members that can rotate relative to the axis around the axis via a hinge and open and close the binding rod through its rotational movement.
An operating member that can be displaced relative to the binding rod member and can selectively take a lock position that prohibits the binding rod member from rotating in the direction of opening the binding rod and an unlock position that allows this. When,
A restraining member that prevents the operating member from being displaced toward the unlocked position by inserting it between at least one of the set of binding rod members and the operating member at the locked position. Equipped with
The operating member has a stopper that is slidable with respect to the binding rod member along the axial direction and prohibits the binding rod member from rotating in the direction of opening the binding rod.
When the operating member is in the locked position, the stopper contacts a predetermined portion of the binding rod member, while when the operating member is in the unlocked position, the stopper is a predetermined portion of the binding rod member even if the binding rod member is rotated. Without touching the part,
The restraining member is inserted between one end of the binding rod member along the axial direction and one end of the operating member at the locked position along the axial direction. It's something you can enter
The restraining member rotates between a restraining position where the binding rod member is inserted between one end of the binding rod member and one end of the operating member, and a non-constraining position where the restraining member escapes from between the two. A binding tool that is supported by the operating member so that it can move . An operating force that is interposed between the binding rod member and the operating member and displaces the operating member from the locked position to the unlocked position is applied in a direction in which the binding rod member is released. The binding tool according to claim 1 , further comprising an operation force conversion mechanism for converting into a moving force .

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