JP2017149107A - Binding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rotate a bound article bound in a file by 360 degrees by allowing a front cover and a back cover to be respectively rotated by 180 degrees in a direction for opening the file and by allowing the front cover to be rotated by 360 degrees toward the back cover while a binder is fixed on the outside of a spine in the file in which the front cover and the back cover are continuously provided through the spine.SOLUTION: Each binding ring insertion hole 211, 231 extends from each folding line 24 of a front cover 21 and a back cover 23 to a side end positioned to face the folding line 24 of each cover so that a binding ring 30 is inserted in the binding ring insertion hole when a file 1 is closed or opened while a binder 3 is fixed on a spine 23, and an extending length is formed to be longer than a length from an inner surface of the spine 23 to an apex of the binding ring 30.SELECTED DRAWING: Figure 1

Description

The present invention relates to a file in which sheets such as notebooks and documents are detachably bound.

Conventionally, a notebook in which a plurality of objects to be bound having a binding hole for passing through a binding ring, which is a binding member having a ring shape, is stacked, if it does not have a spine cover. Before the movement, it is possible to turn the object located at the lowermost layer on the upper layer of the object located at the uppermost layer by rotating the object approximately 360 ° along the inner circumference of the binding ring. However, since the front cover and back cover are connected via the back cover, and a file with a binding tool on the inside of either cover is bound by the width of the back cover or the binding tool, The rotation range of is not approximately 360 °, and the former is a state in which the object is rotated by approximately 360 ° from the state in which the notebook is closed when the object is viewed or written. This can be done with the latter, while the latter is in a state where the object is rotated approximately 180 °. Since it will be performed, and the latter can devote a lot of space in the lateral direction of the object to be spelling product than the former.

As described above, a notebook that does not have a back cover can rotate the binding object bound thereto by approximately 360 °. However, the front cover and the back cover can stably move the binding object from an external force. In order to ensure the function to protect, it is preferable that the front cover and the back cover are continuously provided via the spine.

Japanese Patent No. 5117531 Japanese Patent Laid-Open No. 2003-21886

For example, the binding tool 10 described in Patent Document 1 has the half-rings 20A and 30A in the state where the half-rings 20A and 30A are passed through the binding holes 112 of the leaf 110 that is a binding object. By engaging each other, a ring-shaped binding portion 12 is formed, and thus the leaf 110 is bound. If this is applied to a file, it is thicker than the leaf 110 on the outside of the leaf 110. Alternatively, a cover formed of a hard material may be bound by the same method as binding the leaf 110.

However, in order to ensure that the front cover and the back cover stably function to protect the leaf 110 from an external force, it is preferable that the front cover and the back cover are continuously provided via the back cover. If the object to be bound is bound inside the cover, the binding tool is also positioned inside the cover, and if the binding tool is provided with a binding ring on the base, the binding ring The movable range of the object in the inner periphery of the ring is from one end of the binding ring to the other end, that is, from one connection point of the base and the binding ring to the other connection point. Therefore, it is impossible to rotate the object in the file by approximately 360 ° (for example, Patent Document 2).

In the process of binding the object to such a file and closing it from the opened state, if the spine is positioned below, the space between the outer periphery of the binding tool and the inner surface of the cover If there is a gap in the gap, the object to be slipped may fall there. If the closing operation is continued even in this state, the object to be bound in the gap will become a ring (the movable side binding member 18 and the fixed side binding member 19). It is pushed into the inner surface of the cover without moving upward on the inner periphery of the cover ring, and is bent near the binding hole by the force received from the inner surface of the cover and the ring. In order to prevent this, it may be harder than the object to be covered between the front cover and the back cover and the target object. Anti-sliding plate (so-called “paper good” And it may bind the "protector") in the same way that staples the sheets of material.

On the other hand, the front cover and the back cover are connected through the spine, the base of the binding tool provided with the binding ring is located outside the cover, and the front cover and the back cover pass through the binding ring. If the configuration has a binding ring insertion hole, the rotation axis of the front cover and the back cover is a folding line or a hinge that is a boundary portion with the respective back cover, so this rotation axis is on the inner periphery of the binding ring. In order to rotate the front cover and back cover about 360 degrees in the file in the centered position, if the back cover has a width, the front cover and the back cover rotate. The binding between the back cover and the binding tool will be different depending on the position of the binding. It is necessary to change the position. That is, with such a configuration, the binding tool cannot be fixed to the spine.

If the binding is not fixed to the back cover with the binding ring inserted into the cover or the binding hole of the object, the file will be moved as the file is moved when carrying such a file. A file that protects the object from external forces due to the problem that the hole expands due to repeated movements of the ring that does not contact the periphery of the hole due to their movement. In order to secure the original function, it is preferable that the binding tool is fixed to the spine so as not to move with respect to the file.

In addition to this, if the binding tool is not fixed to the spine, such a binding tool has a binding ring insertion hole on the cover and a binding hole on the binding in the state where the cover or binding is bound. Since it is always movable on the inner periphery of the ring, in other words, the binding tool is always in a state of being rotatable relative to the cover or the object to be bound, for example, if the file has the binding tool described in Patent Document 1, When the file is opened, it is not always possible to determine the position of the engaging portion in the state where the locking portion 22 of the first binding rod and the locking portion 32 of the second binding rod are engaged. The engagement location is not necessarily in a suitable position, and this is preferable when the user performs an operation of releasing the engagement between the locking portion 22 of the first binding rod and the locking portion 32 of the second binding rod. When the user is not in the correct position, the user performs a release operation on the engagement point at the unsuitable position. Or, or to rotate the binding device is moved to a position suitable to release operation the engagement portion, it is forced to bear such.

According to the present invention, in a file having a binding tool provided with a binding ring that is a binding member having a ring shape, the object to be bound is protected from external force, and the object to be bound is rotated by approximately 360 °. It realizes the file that can be.

The file of the present invention is connected to the first base provided with the first binding half-ring so as to be rotatable with respect to the first base so that the tip of the first binding half-ring contacts the tip of the first binding half-ring. A second base portion provided with a second binding half-ring formed so as to be able to form a closed binding ring by rotating the binding ring, and a binding hole for inserting the binding ring A file having a binding tool for releasably binding a binding object having a front cover and a back cover, which are connected to each other via a spine, and the first base closes the file. Provided on the outer surface of the spine in the state, the front cover and the back cover have a binding insertion hole for inserting the binding ring, the file is opened, the cover, the spine and the Before the file is closed through a position where the back cover forms the same surface Up to the position where the front cover and the respective outer surfaces of the back cover are in contact with each other, wherein the respective binding rings and the respective binding ring insertion hole formed so as not to contact with each other, it is a file.

Furthermore, each ring and each ring insertion hole are formed so as not to contact each other when the file is closed.

In addition, in a state where the file is closed, the respective ring rings and the respective ring insertion holes may be formed so as to contact each other.

With such a configuration, when the first base portion of the binding tool is fixed to the spine cover, the front cover and the back cover are rotated around the boundary between the spine and the spine as the rotation axis. Since the ring insertion hole does not contact the binding ring, the front cover and the back cover can be simultaneously rotated with respect to the back cover in different tracks.

Each of the binding ring insertion holes extends from a side end corresponding to the side of the front cover and the back cover that contacts the spine toward the side end opposite to the side cover, and the length thereof is the length of the first base portion. It is longer than the distance from the surface in contact with the spine to the top of the binding ring.

In other words, if the binding ring insertion hole starts from the position that touches the folding line or hinge that is the boundary between the front cover and the back cover and the back cover, the end point in that case is the state of the binding ring when the file is closed Since it is located outside the file from the top of the head, the diameter of the virtual circle drawn by the ring insertion hole when the front cover and back cover rotate around the boundary between them and the back cover forms the ring It is much larger than the diameter of the ring, in other words, the ring fits in the virtual circle drawn by the ring insertion hole.

Furthermore, the first base is located over substantially the entire length of one side of the cover of the file, and a plurality of the second bases are provided so as to be separated from the first base.

In addition, the plurality of second bases rotate without interlocking with each other with respect to the first base.

In such a binding tool, if a binding ring is formed in the vicinity of the upper end and the lower end of the binding tool, it is possible to bind a binding object such as a loose leaf without having it in the vicinity of the center. It is. Rather, it is complicated to pass a large number of binding half-rings through the paper insertion holes and accurately engage / contact all the tips without shifting their positions. It is preferable that the number of binding half-rings is as small as possible in the operation of binding and removing.

On the other hand, if the number of binding rings is too small, force is applied from the binding ring intensively to the insertion hole through which the binding ring is inserted by repeatedly turning the object to be bound such as paper bound to the binding tool. As a result, the binding hole may expand or the end may be cut off.

Therefore, the binding tool is provided with a second base portion in the vicinity of both ends in order to ensure a balance of strength without complicating the attachment and detachment of the object, and the number of closed rings to prevent the hole from expanding or so-called hole breakage. In order to maintain the above, it is preferable that each of the second base portions has two or more second half-bound rings.

Further, since the plurality of second base parts rotate without being interlocked with each other, when engaging / contacting the tips of the respective half-rings, it is possible to divide the work into a small number of half-rings. Therefore, it is possible to avoid a complicated operation of accurately engaging a large number of binding half rings.

The first base portion and the second base portion each have an engagement binding half ring and a contact binding half ring having different tip shapes, and the engagement binding half ring of the first base and the engagement binding of the second base The half ring is formed such that the respective tips engage with each other, and these are engaged to form a single ring, so that the contact half ring of the first base and the second base are in contact with each other. The front ends of the binding half rings come into contact with each other to form another binding ring.

The length of the binding ring formed by the contact binding half-ring is longer than the length of the binding ring formed by each engaging binding half-ring.

By adopting such a configuration, the second base is moved with respect to the first base so that the front end of the engaging base half ring of the first base and the front end of the front end engaging ring half of the second base approach each other. When rotated, the tip of the contact binding half-ring of the first base and the tip of the contact binding half-ring of the second base approach each other, and in this operation process, the tips of the engaging binding half-rings are engaged with each other. Prior to reaching the mating position, the tips of the contact binding half rings come into contact with each other, and each contact binding half ring is bent by continuing the movement in the same direction, and each engagement against the bending force is engaged. The tips of the binding half rings engage with each other.

According to the present invention, in a file in which a front cover and a back cover are connected via a back cover, the front cover and the back cover are attached to the back cover while the binding tool is fixed to the outside of the back cover. For example, if the angle of each cover when the file is closed is 0 °, the front and back covers are rotated approximately 180 ° from the position in the direction to open the file. Or by rotating the front cover toward the back cover by approximately 360 ° so that the outer peripheral surfaces of both covers are in contact with each other, the object bound in this file can be freely rotated by approximately 360 °. I can do it.

In the file according to the present invention, when the front cover, the back cover, and the back cover are in a state of being substantially flat and the closing operation is performed, the outer periphery of the binding ring is always positioned outside the front cover and the back cover thereafter. Since there is no gap between the outer periphery of the binding tool and the inner surface of the cover, the object will not slide down even when the spine is positioned below. Even if a cover is not provided, the inner surfaces of the front and back covers also ensure the function as a slip-off prevention plate piece. It won't be cut off or cut off.

The process of opening the file from the closed state, that is, forming each ring and each ring insertion hole from contacting each other until the position of 360 ° is reached after the rotation of one cover. Therefore, in addition to such a configuration, each binding ring and each insertion hole are in contact with each other only when one cover is at 0 ° and in the vicinity thereof. If the cover is formed in such a manner, this can be performed smoothly in most of the opening and closing operations of the file. In addition, when the cover is at 0 ° and in the vicinity thereof, each ring and each ring insertion hole It is possible to prevent the file from being opened unexpectedly due to the frictional force generated by the contact with.

In addition to this, since the binding tool is fixed to the spine, the engagement point of each engagement half ring and the contact point of each contact half ring continue to be in a fixed position with respect to the file. Therefore, if the position of the engagement part and the contact part is set to a position suitable for the user to perform the releasing operation on the design stage, the user of such a file is not suitable. There is no burden of performing a releasing operation on the engaging portion at the position or moving the engaging portion to a position suitable for the releasing operation by rotating the binding tool.

The front end of the first base contact half ring and the front end of the second base end contact half ring are engaged with each other. In the state where the front ends of the rings are in contact with each other and the respective binding rings are formed, the length of the binding ring formed by each contact binding half ring is longer than the length of the binding ring formed by each engagement binding half ring. Since each contact binding half-ring is always bent, the restoring force of each contact binding half-ring is in the direction of separating the tips of each engagement binding half-ring through the first base and the second base. It will continue to work as a force, and its engaged state will become strong.

Furthermore, when these tips are released from the state in which the tips of the respective engagement half rings are engaged with each other, the restoring force is applied so that each half ring of the second base part moves away from each half ring of the first base part. Therefore, when taking out the object from the binding tool, the operation of rotating the second base relative to the first base with the user's fingers can be omitted.

The perspective view which shows the state which closed the file of this invention. The front view which shows the state which opened the file of this invention. AA sectional drawing of FIG. The figure which shows the state which provided the binding ring in the cover of the conventional file. The figure which shows the state which provided the binding ring in the cover of the phi of this invention. The figure which shows the conventional file in which the to-be-sewn object was bound. The figure which shows the file of this invention in which the to-be-bound object was bound. The front view of the binding tool used for the file of this invention. BB sectional drawing which shows engagement / contact and cancellation | release of each binding half ring. The front enlarged view which shows engagement / contact and cancellation | release of each binding half ring. The figure which shows the relationship between each ring insertion hole and each ring. The conceptual diagram which shows the process in which the binding tool 3 and the cover body 2 are fixed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this specification, unless otherwise specified, “outside” and “inside” indicate the outside and inside of the file in a state where the file is closed so as to contain the object to be bound, "And" bottom "indicate the top and bottom visually recognized in FIG.

The file 1 shown in FIG. 1 has a cover body 2 in which a front cover 21, a spine cover 22, and a back cover 23 are connected to each other via a folding line 24, and a binding tool 3 is provided on the outer surface of the spine cover 23. The binding tool 3 is provided with a binding ring 30 that is inserted into a binding hole 41 provided in the binding object 4 to bind the binding object 4. The binding ring 30 is provided on the front cover 21 and the back cover 23, respectively. Is provided with a ring insertion hole 211 and a ring insertion hole 231 which does not appear in FIG. If the front cover and the back cover are connected via the spine cover, the folding cover 24 is provided on the integrally formed cover body 2 to form the front cover, the back cover, and the spine cover. Instead, the front cover, the back cover, and the back cover, which are each plate piece, may be connected via a hinge (not shown).

As shown in FIGS. 2 and 3, a rotating shaft 321 provided on the second base 32 is pivotally supported on a rotary bearing 311 provided on the first base so that the first base 31 is connected to the back. By attaching to the outside of the cover 22, the binding tool 3 is fixed to the spine 22, and can be rotated with respect to the first binding half ring 33 erected on the first base 31 and the first base 31. When the second base 32 is rotated with respect to the first base 31 so that the first binding half-rings 34 erected on the second base 32 connected to the first base 31 are in contact with each other, The binding half ring forms the binding ring 30. In this state, if each binding half ring passes through the binding hole 41, the article 4 is bound in this file.

By the way, as shown in FIG. 4, a binding tool 3 formed so that the binding ring 30 reaches the outside of the file 1 is provided in the file 1 in which the front cover 21, the back cover 22, and the back cover 23 are continuously provided. In this case, the distance from the center of the spine 22 to the ring insertion holes 210 and 230 differs depending on whether the file 1 is to be closed (FIG. 4 (a)) or opened (FIG. 4 (b)). Both the area of the binding ring insertion hole 210 through which the binding ring 30 is inserted in the front cover 21 and the area of the binding ring insertion hole 230 through which the binding ring 30 is inserted in the back cover 23 are sufficiently large with respect to the cross-sectional area of the binding ring 30. Unless otherwise, it is necessary to change the relative position of the spine 22 with respect to the binding ring 30 in accordance with each state. That is, with such a configuration, the binding tool cannot be fixed to the spine.

This is a folding line 24 in which the rotation axis of the front cover 21 and the back cover 23 is a boundary portion with each spine cover 22, and if there is a distance between each folding line 24, the rotation axis of the front cover 21 And the rotation axis of the back cover 23 is different, and when the file 1 is to be closed (FIG. 4A), the shortest distance between the ring insertion hole 210 and the ring insertion hole 230 opens the file 1. When the ring 30 is shorter than that of FIG. 4B, the straight line connecting the ring insertion hole 210 and the ring insertion hole 230 forms a chord of the arc. If so, it is necessary to position each cover in a place where the arc chord is short, and in the latter case, it is necessary to position each cover in a place where the arc chord is long. That is, if the positions of the ring insertion hole 210 and the ring insertion hole 230 are set so that the spine 22 passes through the vicinity of the center of the ring 30 when the file 1 is opened, the file The back cover 23 moves away from the vicinity of the center of the binding ring 30 by the operation of closing 1.

However, as described above, since it is preferable that the binding tool 3 is fixed to the spine 22 so that the file 1 does not move relative to the file, the binding tool 3 is fixed to the spine 22. In order to be able to open and close the file 1, the present invention provides a ring insertion hole corresponding to such a problem.

FIG. 5 is a diagram illustrating a state in which each cover is rotated without binding the object 4 from the file illustrated in FIG. 3. As shown in this figure, whether the file 1 is closed (FIG. 5 (a)) or opened (FIG. 5 (b)) while the binding tool 3 is fixed to the spine 23. The binding ring insertion holes 211 and 231 are on the side facing the folding line 24 on each cover from the folding line 24 of the front cover 21 and the back cover 23 so that the binding ring 30 passes through the binding ring insertion hole. A position extending from the folding line 24 of the top of the binding ring 30 and the binding ring insertion holes 211 and 231 to the folding line 24 on each cover when the file 1 is bound. It is made long so that it does not come into contact with the side end.

By doing in this way, until the file 1 is opened and the front cover 21, the back cover 22 and the back cover 23 reach the position where they form the same surface, the binding ring 30 is placed in each of the binding insertion holes 211 and 231. Since there is no contact with the circumference, the shortest distance between the area of the binding ring insertion hole 211 through which the binding ring 30 is inserted in the front cover 21 and the binding insertion hole 231 through which the binding ring 30 is inserted in the back cover 23 is the file 1. The ring 30 is relatively moved in the ring insertion hole 211 and the ring insertion hole 231 even if the ring is different between when the ring is closed (FIG. 5A) and when it is opened (FIG. 5B). In addition, if the angle of each cover when the file is closed is 0 °, the front cover 21 and the back cover 23 are rotated approximately 180 ° from the position in the direction of opening the file. Or move the front cover 21 to the back cover 23 Each cover can be rotated to a position such that the outer peripheral surfaces of both covers are in contact with each other by rotating approximately 360 °.

In addition to this, when the file 1 is completely closed (FIG. 5 (d)), that is, the inner surface of the front cover 21 and the inner surface of the back cover 23 come into contact (when the object 4 is accommodated, In the state in which both are in contact via the object to be bound 4), the outer peripheral surface of the binding ring 30 and the outer peripheral surfaces of the binding ring insertion holes 211 and 231 may be in contact with each other. If formed in this way, when the file 1 is completely closed, a frictional force is generated between the outer peripheral surface of the binding ring 30 and the outer peripheral surfaces of the binding ring insertion holes 211 and 231. It can be prevented from opening without the intention of the user. Further, although not shown, the ring 30 and the ring insertion holes 211 and 231 may be formed to engage when the file 1 is completely closed.

By the way, as in the conventional file 19 shown in FIG. 6A, opening this creates gaps between the front cover 219 and the back cover 239 and the binding ring 399. If the state is located in the center direction), the object 4 slides toward the back cover 229 from such a gap, and when the file 19 is further closed from this state, the object 4 is 219 and the inner surface of the back cover 239 and the binding ring 399 may prevent the binding hole 41 from being bent or spreading in the vicinity of the binding hole 41 or the end thereof being cut off. Therefore, as shown in FIG. 6B, it is known to provide a slip-off prevention plate piece 49 between the front cover 219 and the back cover 239 and the object to be bound 4.

The slip-off prevention plate piece 49 is formed of a resin plate piece harder than the object to be formed 4 made of paper pieces, and the same method as binding the objects to be bound 4 outside all the objects to be bound 4. When the file is opened, the edge on the binding hole 41 side of the slip-off prevention plate piece 49 comes into contact with the binding ring 399, and the opposite edge faces the inner surface of the front cover 219 and the back cover 239. It is shaped so as to cover the gap between the front cover 219 and the back cover 239 and the binding ring 399 while maintaining a flat state between both ends due to its hardness. 7 prevents the object 4 from slipping down toward the spine 229. On the other hand, in the file 1 of the present invention shown in FIG. 7, the outer periphery of the binding ring 30 is the front cover 21 and the back cover 23. Because it passes outside, between the front cover 21 and back cover 23 and the binding ring 30 Since Hitsuzuributsu 4 can not occur gap slides down, there is no need to provide a sliding prevention plate piece 49.

FIG. 9 is a cross-sectional view taken along the line B-B of FIG. 9 showing the state where the tips of the binding half rings of the binding tool 3 shown in FIG. The location where the binding half ring is erected and the location in the vicinity thereof are shown enlarged. As shown in these drawings, the binding tool 3 includes a first base 31 provided with a first binding half ring 33 and a rotation shaft of the second base 32 with respect to the rotation bearing 11 of the first base 31. Can be pivotally connected to the second base 32, and a closed ring 30 can be formed by rotating the first base half ring 33 so that the front end of the first base half ring 33 is in contact with the front end of the first base half ring 33. A second binding half ring 34 formed as described above is provided, and an insertion protrusion 35 described later is further provided.

When the binding tool 3 is attached to a file, the first base 31 has a length that is positioned over the entire length in one direction, and the region having the first binding half ring 33 extends over the entire length of the first base 31. However, this is not necessarily the case. For example, the first base 31 may be intermittently disposed, and further, the first base 31 may be disposed near both ends. May be.

The second base portion 32 is arranged in a region corresponding to the region having the first binding half ring 33, that is, a place where the tip of the second binding half ring 34 can contact the tip of the first binding half ring 33.

Furthermore, as long as a plurality of second base portions 32 are provided, it is not necessary that the movement of one second base portion 32 and the movement of the other second base portion 32 be interlocked. Rather, in order to simultaneously engage / contact the tips of a large number of half-rings arranged over a wide range, it is necessary to accurately engage / contact each other. In contrast to the formation of a small number (narrow range) of the binding half-rings, it is possible to perform the engagement / contact with each other more reliably. It is preferable that the movements of the base portions 32 do not interlock with each other.

The first base portion 31 has an engagement half ring 331, and the second base portion 32 has an engagement half ring 341 formed such that its tip can be engaged with the tip of the engagement half ring 331. The first ring 31 has a contact half ring 332, and the second base 32 has a tip of the engagement half ring 331 and the engagement half ring 341. You may have the contact half ring 342 which forms the binding ring 30 when a front-end | tip comes into contact with the front-end | tip of the contact half-ring 332 in connection with a front-end | tip.

As shown in FIG. 10A, the lower tongue provided at the tip of the upper engagement half ring 331 and the upper tongue provided at the tip of the engagement half ring 341 are engaged. If the upper tongue provided at the tip of the lower engagement half ring 331 is engaged with the lower tongue provided at the tip of the engagement half ring 341, the engagement is released. The upper engagement half ring 331 may be bent downward, and the lower engagement half ring 331 may be bent upward. That is, the upper and lower engagement half rings 331 in the first base 31 may be bent so as to be pinched simultaneously.

If the contact half ring 332 and the contact half ring 342 are provided, the length of the binding ring 30 formed by them is the length of the binding ring 30 formed by the engagement half ring 331 and the engagement half ring 341. If it is longer than that, the contact half ring 332 and the contact half ring 342 are bent while the engagement half ring 331 and the engagement half ring 341 are engaged. By simply pinching the half rings 331 at the same time, the restoring force of the contact half rings 332 and the contact half rings 342 releases the engagement / contact of all the binding half rings here as shown in FIG. .

Since such a binding tool is used, the engagement half ring 331 and the engagement half ring 331 are prevented from being disengaged between the engagement half ring 331 and the engagement half ring 341 when the file is closed. FIG. 11 shows that when the engagement half ring 331 in the first base 31 is bent up and down to the extent that the engagement with 341 is released, the engagement half ring 331 comes into contact with the inner periphery thereof. As described above, the width of the ring insertion holes 211 and 231 may be set to be small so that the function of preventing the engagement from being released is secured to the ring insertion holes 211 and 231.

As shown in FIG. 12, the binding tool 3 and the cover body 2 are fixed to each other by inserting an insertion projection 35 erected from the first base portion 31 into an insertion hole 25 provided in the spine cover 22. The In particular, the insertion protrusion 35 has a substantially hemispherical top at the top and a flat surface at the bottom and a distal end (a portion connected to the first base 31) having a substantially columnar shape. The length corresponding to the diameter of the insertion hole 25 is slightly longer than the diameter if the insertion hole 25 is circular, and the diameter thereof is substantially the same as the diameter of the insertion hole 25 if the end portion is cylindrical. When the insertion protrusion 35 is formed and inserted into the insertion hole 25, the insertion hole 25 temporarily bends to get over the tip of the insertion protrusion 35 and reach the end of the insertion protrusion 35. Since the diameter of the insertion protrusion 35 and the diameter of the insertion hole 25 are substantially the same, and the bottom part of the front-end | tip part of the insertion protrusion 35 is a plane, the binding tool 3 and the cover body 2 are firmly fixed. . In addition, although the terminal part of the insertion protrusion 35 was demonstrated as a column shape and the insertion hole 25 was circular shape, it is not restricted to such a shape, For example, the terminal part of the insertion protrusion 35 is prismatic, The insertion hole 25 may have a square shape having substantially the same area as the cross-sectional area of the square shape.

DESCRIPTION OF SYMBOLS 1 File 2 Cover body 21 Front cover 210 Binding ring insertion hole 211 Binding ring insertion hole 219 Conventional file cover 22 Back cover 229 Conventional file spine 23 Back cover 230 Binding ring insertion hole 231 Binding ring insertion hole 239 Conventional Front cover of the file 24 Folding curve 25 Insert hole 3 Binding tool 30 Binding ring 31 First base 311 Rotating bearing 32 Second base 321 Rotating shaft 33 First binding half ring 331 Engaging binding half ring 332 Contact binding half Ring 34 Second binding half-ring 341 Engaging binding half-ring 342 Contact binding half-ring 35 Insertion protrusion 39 Conventional file binding tool 399 Conventional binding tool binding ring 4 Object 41 Binding hole 49 Sliding prevention plate piece

Claims (8)

A first base provided with a first binding half-ring is connected to the first base so as to be rotatable, and the tip of the first binding half-ring is rotated so that its tip comes into contact with the first base. A second base portion provided with a second binding half-ring formed so as to be able to form a closed binding ring, and having a binding hole for inserting the binding ring. A file having a binding tool to be detachable;
In the file, a front cover and a back cover are arranged continuously via a back cover,
The first base is provided on the outer surface of the spine in a state where the file is closed,
The front cover and the back cover have a binding insertion hole for inserting the binding ring,
The outer surfaces of the front cover and the back cover are in contact with each other in a state in which the file is opened and the file is closed through a position where the front cover, the back cover, and the back cover form the same surface. Until reaching the position, each ring and each ring insertion hole are formed so as not to contact each other,
File. In the state where the file is closed, each of the ring rings and each of the ring insertion holes are formed so as not to contact each other.
The file according to claim 1. In the state in which the file is closed, each ring and each ring insertion hole are formed so as to contact each other,
The file according to claim 1. Each of the binding ring insertion holes extends from a side end corresponding to the side of the front cover and the back cover that contacts the spine toward the side end opposite to the side cover, and the length thereof is the length of the first base portion. Longer than the distance from the surface in contact with the spine to the top of the binding ring,
The file according to claim 1 or claim 2. The first base is located over substantially the entire length in one side direction of the cover of the file, and a plurality of the second bases are provided so as to be separated from the first base.
The file according to any one of claims 1 to 4. The plurality of second bases rotate without interlocking with the first base,
The file according to any one of claims 1 to 5. The first base and the second base each have an engaging binding half ring and a contact binding half ring having different tip shapes,
The engaging base half ring of the first base and the engaging base half ring of the second base are formed so that their tips engage with each other, and they are engaged to form a single ring. By doing so, the front end of the contact binding half-ring of the first base and the contact binding half-ring of the second base are in contact with each other to form another binding ring.
The file according to any one of claims 1 to 6. The length of the binding ring formed by the contact binding half-ring is longer than the length of the binding ring formed by each engaging binding half-ring,
The file according to any one of claims 1 to 7.

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