JP5998711B2 - Binding tools and files - Google Patents

Description

  The present invention relates to a binding tool for binding a refill such as a clear pocket, and a file having the binding tool.

  2. Description of the Related Art Conventionally, as a binding tool for binding a refill such as a clear pocket having a large number of binding holes on the binding source side, a binder method is known in which binding is performed by inserting a binding ring into all the binding holes. However, recently, there is an increasing demand for a binding tool for easily binding without being bulky. Conventionally, as a binding tool for easily binding a refill, for example, a plate-like base that can be elastically deformed in a thickness direction, a binding pin that is provided at both ends of the base and is engaged with two binding holes of the refill, A thing provided with the hooking member which makes the shape of a thin plate projected in the direction which opposes from the tip of each binding pin is known (for example, refer to patent documents 1).

  However, in such a case, since only the two binding holes in the intermediate portion are bound, it is difficult to reliably bind the binding source side because both ends of the binding source side are opened. There is a problem.

Japanese Patent Laid-Open No. 7-179092

  The present invention pays attention to such inconveniences, and an object of the present invention is to provide a binding tool that can easily bind the binding source side while being simple and a file having the binding tool.

  In order to achieve such an object, the present invention takes the following measures.

  That is, the binding tool according to the present invention is for binding a refill having three or more binding holes on the binding source side, and is provided at a base for holding one side of the refill and at both ends of the base. End binding pins that engage with the end binding holes of the refill, and cantilevered in a direction intersecting the axis of the end binding pins from the tip of each end binding pin, and the axis is the surface of the refill A hook member that allows insertion / removal of the refill with respect to the end binding pin only when the refill is not orthogonal, an intermediate binding pin that is provided on the base and is engaged with an intermediate binding hole of the refill, And a lid that is detachably disposed at a tip of the intermediate binding pin and prevents the refill from being detached from the intermediate binding pin.

  Here, the refill may be any sheet-like sheet that can be bound in a replaceable manner, for example, a clear book replacement sheet (hereinafter referred to as a clear pocket) having a pocket shape with an open upper edge. ) And a clear holder with the upper and outer edges open, or paper such as a binder inner paper that can be directly written.

  In such a case, it is simpler than that bound by the binding ring, and both ends and the intermediate portion of the refill can be bound together, so that the binding source side can be bound reliably.

  In order to easily attach and detach the refill without incurring the complexity of the structure, the base is provided with a thin plate-like base body that can be elastically deformed in the thickness direction, and the end binding pin Is preferably provided on the base body.

  In order to more reliably prevent or suppress the dropout of the refill, it is desirable that the both hook members have a pair of thin plate-like shapes extending in opposite directions.

  In order to prevent the lid from being lost, the lid may be supported by the base so as to be rotatable via a hinge. In this case, it is preferable that the base is provided with a hinge forming portion for configuring the hinge on one side edge side of the base body.

  In order to attach this binding tool to the cover body, it is preferable that the base is provided with an attachment protrusion for attaching to the cover body on one side edge side of the hinge forming portion.

  In order to prevent the occurrence of the problem that it becomes difficult to insert and remove the refill by providing a hinge or by being attached to the cover body, the base is held by the base body holding the end binding pins. It is preferable that both end portions of the above are separated from the hinge forming portion through a slit.

  In order to more reliably prevent the intermediate portion of the refill from being lifted and separated from the intermediate binding pin, the intermediate engagement that engages the intermediate binding pin and the end binding pin in the mounted state. It is desirable to use a plate having a claw and an end engaging claw.

  In order to reduce the thickness of the lid as much as possible in the closed state, the lid is provided with a notch for avoiding interference with the hook member, and the outer surface of the lid in the mounted state It is preferable to set so that the outer surface of the hook member is substantially flush.

  As a file provided with such a binding tool, a binding tool provided with an attachment ridge for attaching to a cover body on one side edge side of the hinge forming portion, and a rail for holding the attachment ridge in a removable manner. The thing which comprises the provided cover body can be mentioned.

  In order to realize a file in which a plurality of binding tools can be detachably mounted on a common cover body, the cover body is provided with a rail sheet having a plurality of parallel rails on the inner surface of the back cover. It is good.

  ADVANTAGE OF THE INVENTION According to this invention, the file which has the binding tool which can bind the binding origin side reliably reliably, and the said binding tool can be provided.

The front view which concerns on one Embodiment of this invention. The expansion right view which concerns on the same embodiment. The AA line expanded sectional view concerning FIG. The BB line expanded sectional view which concerns on FIG. The CC sectional view taken on the line of FIG. The front view which shows the state which opened the cover which concerns on the embodiment. FIG. 7 is an enlarged sectional view taken along the line DD of FIG. 6. The EE line expanded sectional view concerning FIG. FF line expanded sectional view concerning FIG. Action | operation explanatory drawing which concerns on the same embodiment. The enlarged view of the principal part which concerns on FIG. The perspective view which concerns on the same embodiment. The perspective view which shows the file which concerns on the same embodiment. The other perspective view which shows the file. The enlarged plan view which shows the principal part of the file. Action | operation explanatory drawing which concerns on FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In the present embodiment, the present invention is applied to a clear book CB as shown in FIGS. The clear book CB has a plurality of clear pockets P, which are refills, held on a cover body H via a binding tool 2 according to the present invention.

  The clear pocket P is a pocket-shaped pocket that closes the binding edge, bottom edge, and anti-binding edge of the two transparent films, and inserts documents etc. from the opened upper edge. Is something that can be done. A large number of binding holes P1, for example, 30 binding holes P1, are provided at predetermined intervals on the binding source side. Among these many binding holes P1, two binding holes P1 near the both ends (hereinafter referred to as end binding holes P2) and two binding holes P1 near the center (hereinafter referred to as intermediate binding holes P3) are: The diameter is set larger than the other binding holes P1.

  As shown in FIGS. 1 to 16, the binding tool 2 is for binding the clear pocket P, and is provided with a base 3 for holding one side of the clear pocket P, and at both ends of the base 3. End binding pins 4 engaged with the end binding holes P2 of the clear pocket P, and cantilevered in a direction intersecting the axis of the end binding pins 4 from the tips of the end binding pins 4 And a hook member 5 that permits insertion / removal of the clear pocket P with respect to the end binding pin 4 only when the axis is not perpendicular to the surface of the clear pocket P; A pair of intermediate binding pins 6 for engaging with the intermediate binding hole P3 of the clear pocket P, and the intermediate pockets 6 are detachably arranged at the tips of the intermediate binding pins 6. Formed by and a cover 7 to prevent disengagement from the pin 6.

  The base 3 is a thin plate-like base main body 31 that can be elastically deformed in the thickness direction, a hinge forming portion 32 adjacent to one side edge side of the base main body 31, and a side edge side of the hinge forming portion 32. The base main body 31, the hinge forming portion 32, and the mounting ridge 33 are integrally formed of resin. Both ends of the base body 31 are separated from the hinge forming portion 32 through slits 34, and the both ends supported in a cantilever manner are elastically deformed relatively easily in the thickness direction. To get. The end binding pins 4 are integrally provided at both ends, and the intermediate binding pins 6 are integrally provided at an intermediate portion of the base body 31. The hinge forming portion 32 is a belt-like member extending along one side edge of the base main body 31 and includes bearings 35 at a plurality of positions spaced in the longitudinal direction. The bearing 35 has a shaft hole 37 through which a shaft 78 to be described later is inserted. The bearing 35 has a bearing surface 37 a that slidably holds the outer periphery of the shaft 78 on the inner surface of the bearing 35. Is opened to the rear facing the mounting protrusion 33 through the shaft insertion / removal space 37b. Specifically, each bearing 35 has a letter J shape in plan view. Lid supports 36 are provided on both sides of each bearing 35. The lid receiver 36 includes a lid receiving surface 36a that rotatably supports an outer surface of a base end edge 76 (to be described later) of the lid body 7. The mounting ridge 33 is integrally provided on one end edge side of the hinge forming portion 32, and includes a thin portion 33a that is easily elastically deformed, and an enormous portion 33b that is formed at the leading edge of the thin portion 33a. Is. The enormous part 33b has a larger thickness dimension than the thin part 33a.

  The end binding pin 4 is provided integrally with the base body 31 and has a cylindrical shape having a cavity at the center. The outer end surface of the end binding pin 4 includes a lid receiving portion 41 that receives the inner surface 7b of the lid body 7, and an exposed portion 42 that is flush with the outer surface 7a of the lid body 7. Note that the end binding pin 4 is divided into one side edge side and the other side edge side by the slit 43, and occurs when the mounting state (S) is engaged with the lid body 7 side due to the presence of the slit 43. Elastic deformation in the diameter expansion direction is facilitated. A claw receiver 44 with which an end engaging claw 72 described later is engaged is formed on the inner periphery of the end binding pin 4.

  The hook member 5 is a pair of thin plate-like members extending in opposite directions from the pair of the end binding pins 4. Specifically, the hook member 5 is a hook provided on the upper end binding pin 4. The member 5 is cantilever extended upward, and the hook member 5 provided on the lower end binding pin 4 is cantilever extended downward. The width dimension of the base end portion of the hook member 5 is set to be approximately equal to the diameter of the end binding pin 4, and the width dimension of the tip end portion is set smaller than the width dimension of the base end portion. The extension dimension of the hook member 5 is set larger than the diameter of the end binding hole P2 provided in the clear pocket P. The outer surface 5a of the hook member 5 is substantially flush with an outer surface 7a (described later) of the lid body 7 in the mounted state (S). The shape of the hooking member 5 will be described in detail. The hooking member 5 is gradually inclined in the direction of approaching the base body 31 from the base end portion to a position slightly before the tip from the tip end, from the vicinity of the tip end portion to the tip end. Has a shape that warps in the opposite direction. By doing so, the lower side surface close to the base body 31 is used as a holding surface 51 that can hold the plurality of bound clear pockets P, and the lower surface on the tip side that warps from the holding surface 51 is used as the end binding hole P2. A guide surface 52 that can guide the insertion suitably is provided.

  The intermediate binding pin 6 is provided integrally with the base body 31 and has a cylindrical shape having a cavity at the center. An outer end surface 61 of the intermediate binding pin 6 is formed as a whole at a position lower than the exposed portion 42, and the outer end surface 61 receives the inner surface 7 b of the lid body 7. Yes. The intermediate binding pin 6 is divided by the slit 63 into one side edge side and the other side edge side, and due to the presence of the slit 63, an expansion occurs when the attachment state (S) is engaged with the lid body 7 side. The elastic deformation in the radial direction is easy. Further, a claw receiver 64 with which an intermediate engagement claw 73 described later is engaged is formed on the inner periphery of the intermediate binding pin 6.

  The lid 7 includes a thin plate-like lid main body 71, an end engaging claw 72 projecting integrally at a portion corresponding to the end binding pin 4 of the lid main body 71, and the intermediate of the lid main body 71. An intermediate engagement claw 73 integrally provided at a portion corresponding to the binding pin 6 and a hinge forming portion 74 provided integrally on one side edge side of the lid main body 71 are provided. Are integrally formed. The lid main body 71 can cover substantially the entire area of the base main body 31 in the mounted state (S), and includes a notch 75 for avoiding interference with the hooking member 5 in the mounted state (S). . Specifically, the lid body 71 has a cutout portion 75 in which a synthetic resin is cut out only in a shape corresponding to the front view shape of the hook member 5, and the cutout portion 75 causes the cutout portion 75 to be in the mounted state (S). The outer surface 7a of the lid 7 and the outer surface 5a of the hook member 5 are set to be substantially flush with each other. The end engaging claw 72 has a claw tip 72a protruding to the other side edge, specifically, the right side in FIG. 3, and is inserted into the cavity of the end binding pin 4 in the mounted state (S). The toe 72 a is engaged with the nail receiver 44 in a state where the nail receiver 44 of the part binding pin 4 is overcome. The intermediate engagement claw 73 has a claw tip 73a that protrudes to one side edge side, specifically, the left side in FIG. 5, and is inserted into the cavity of the intermediate binding pin 6 in the mounted state (S). The toe 73a is engaged with the claw support 64 in a state where the 6 claw support 64 is passed. The hinge forming portion 74 is a substantially cylindrical shape that constitutes the base end edge 76 of the lid body 7, and has a discontinuous portion 77 at a portion corresponding to the bearing 35, and in each of the discontinuous portions 77, Each of the shafts 78 supported by the bearing 35 is provided. The lid body 7 thus formed is rotatably attached to the base 3 via a hinge.

  The hinge is provided with the bearing 35 and the lid receiver 36 provided on the base 3, and the lid 78 is provided on the lid body 7 and is supported by the bearing 35. 7 base end edges 76. The lid 7 can be used to disassemble the binding tool 2 that can be easily separated from the base 3 and to assemble the binding tool 2 to be joined by using temporary elastic deformation of the bearing 35. ing.

  Next, a procedure for binding the clear pocket P using the binding tool 2 described above will be described. First, the clear pocket P is bent so that the lower end binding pin 4 and the end binding hole P2 are engaged, and the axis of the end binding pin 4 is orthogonal to the surface of the clear pocket P. It is made into a state which does not exist, and goes through the said end part binding hole P2 from the guide surface 52 of the said lower hooking member 5. FIG. The lower end binding hole P <b> 2 is engaged with the lower end binding pin 4. Subsequently, as shown in an enlarged view in FIG. 11, the base separated from the hinge forming portion 32 by the slit 34 in order to engage the upper end binding pin 4 with the upper end binding hole P2. The main body 31 is bent upward. Thereby, the state where the axis Q of the end binding pin 4 is not orthogonal to the surface of the clear pocket P can be realized as described above. Then, from the state shown in the figure, the hook member 5 is inserted into the end binding hole P2 while the clear pocket P is horizontal. At this time, the guide surface 52 of the hook member 5 can smoothly guide the end binding hole P2 toward the end binding pin 4 on the proximal end side. Then, when the upper end binding hole P2 and the upper end binding pin 4 are engaged with each other and the base body 31 is released from the bent state, the original shape is restored again by the elasticity of the base body 31 itself. To do. At this time, the posture of the clear pocket P is also changed as the base body 31 is elastically restored. Accordingly, the intermediate binding hole P3 and the intermediate binding pin 6 are naturally engaged with each other. Then, the lid body 7 is rotated from the state shown in FIGS. 7 to 9 to the mounting state (S). More specifically, the end engaging claw 72 and the intermediate engaging claw 73 on the lid 7 side are respectively engaged with the claw receiver 44 of the end binding pin 4 and the claw receiver 64 of the intermediate binding pin 6. By putting them together, a mounting state (S) is obtained. At this time, both the slit 43 of the end binding pin 4 and the slit 63 of the intermediate binding pin 6 are temporarily expanded to allow passage of the toes 72a and 73a, respectively. As a result, as shown in FIGS. 3 to 5, the toe 72 a of the end engaging claw 72 is easily engaged with the claw receiver 44 of the end binding pin 4, and the intermediate engaging claw 73 The mounting state (S) is realized by easily engaging the toe 73a with the nail support 64 of the intermediate binding pin 6.

  When removing the clear pocket P, the procedure is reversed. Briefly, first, the cover 7 of the binding tool 2 is rotated to release the mounting state (S). Thereafter, a part of the hinge main body 31 provided with any of the end binding pins 4 is elastically deformed so that the axis Q of the end binding pins 4 is not orthogonal to the clear pocket P, and the end binding holes P2 And the end binding pin 4 are released, the end binding hole P2 is moved from the proximal end of the hooking member 5 to the distal end, and is completely separated from the end binding hole P2 and the end binding pin 4. Then, the clear pocket P is appropriately bent to separate the clear pocket P from the binding tool 2.

  By repeating such an operation of binding the clear pocket P a plurality of times, a state in which one binding tool 2 suitably binds the plurality of clear pockets P as shown in FIG. 12 is realized.

  In this embodiment, as shown in FIGS. 13 to 16, the file 1 is configured by mounting a plurality of such binding tools 2 on the cover body H. Further, the above-described clear book CB is realized by attaching the binding tool 2 to the cover body H in a state where the clear pocket P is bound. Hereinafter, the configuration of the cover body H will be described.

  The cover body H is formed by forming a front cover H1, a back cover H2, and a spine cover H3 in which the base edge of the front cover H1 is connected to the base edge of the back cover H2 from a single resin sheet. In the spine cover H3, a plurality of resin hinges H4 are provided in parallel. A pair of rail sheets H5 for attaching the binding tool 2 is attached to the inner surface of the spine cover H3. One rail sheet H5 has a base end fixed to the vicinity of the center of the back cover H3 by welding, and has a leading end extending in the direction of the cover H1. This one rail sheet H5 is provided with a plurality of rails H6 parallel to the resin hinge H4. Each rail H6 is formed by a pair of protrusions H7, and a rail groove H8 into which the attachment protrusion 33 of the binding tool 2 is inserted is formed between the protrusions H7. As shown in FIGS. 15 and 16, the rail groove H8 has an opening H8b that allows the thin portion 33a of the mounting protrusion 33 to pass through, and a groove body H8a into which the enormous portion 33b is fitted. ing. The rail groove H8 is open at least at one end side, and can be inserted from the open end while sliding the mounting protrusion 33 in the longitudinal direction. The other rail seat H5 has a base edge fixed by welding in the vicinity of the center of the back cover H3, and has a front end extending in the direction of the back cover H2, and is parallel to the resin hinge H4. The rail H6 is provided in the same manner as one rail seat H5. These both rail seats H5 may be configured integrally. In addition to the illustrated embodiment, the rail H6 may be directly provided on the spine cover H3 without providing the rail seat H5. As an example in this case, the rail H6 can mention the aspect directly formed in a spine between the some resin hinges H4.

  Further, in the file 1 according to the present embodiment, as shown in FIGS. 15 and 16, the back cover H 3 is appropriately deformed depending on the thickness of the clear pocket P bound to the binding tool 2, so that the file 1 is asymmetrical. Therefore, it is possible to effectively prevent the back cover H3 from being unnecessarily bulky by being deformed to give an uncomfortable feeling. Thereby, it can be stored in a bookshelf or the like in a substantially symmetrical state in plan view regardless of the thickness of the clear book CB as a refill. 14 shows a mode in which all the binding tools 2 are attached to the rail H6 in the same direction, but FIGS. 15 and 16 show a mode in which two binding tools 2 are attached symmetrically, that is, opposite to each other. In other words, as long as the orientation of the clear pocket P with respect to the cover body H is aligned, the orientation in which the attachment protrusion 33 is attached to the rail H6, in other words, the orientation of the binding tool 2 attached to the cover body H is not limited.

  FIG. 15 shows a state in which each clear pocket P bound to the binding tool 2 accommodates contents such as a document having a certain thickness. In this state, out of a plurality of resin hinges H4 provided on the spine cover H3, a pair of resin hinges H4 spaced apart from the central resin hinge H4 by a fixed dimension is deformed according to the thickness of the clear book CB. . As a result, the spine cover H3 is symmetrical in plan view, and the front cover H1 and the back cover H2 are arranged in parallel to each other.

  FIG. 16 shows a state where the thickness of each clear pocket P bound to the binding tool 2 is small. In this state, the central resin hinge H4 provided on the spine cover H3 is greatly bent and the other plastic hinges H4 are gently curved, so that the spine cover H3 is symmetrical in plan view, and the front cover H1 and the back cover are symmetrical. Although H2 is close, it is in a state of being arranged parallel to each other as in FIG. At this time, the rail seat H5 attached to the spine cover H3 is appropriately deformed, and the attachment attached to the rail H6 and the thin wall portion 33a are also appropriately deformed, so that the four binding tools attached to the rail seat H5. It is effectively avoided that 2 overlaps in the same direction and the binding tool 2 becomes bulky in the cover body H.

  With the configuration as described above, the binding tool 2 according to the present embodiment and the file 1 in which the binding tool 2 is attached to the cover body H are compared with those in which the work of binding the clear pocket P as a refill is bound by a binding ring. In addition, since both ends and the intermediate portion of the clear pocket P can be bound together, the binding origin side can be bound securely.

  In the present embodiment, the base 3 is provided with a thin plate-like base body 31 that can be elastically deformed in the thickness direction so that the clear pocket P can be easily attached and detached without causing a complicated structure. The end binding pins 4 are provided on the base main body 31.

  In this embodiment, in order to prevent or suppress the clear pocket P from falling off more reliably, the both hook members 5 have a thin plate shape extending in opposite directions.

  In this embodiment, in order to prevent the lid 7 from being lost, the lid 7 is preferably supported on the base 3 via a hinge so as to be rotatable. In this case, the base 3 is provided with a hinge forming portion 32 for constituting the hinge on one side edge side of the base main body 31.

  Moreover, in this embodiment, the binding tool 2 can be easily attached to the cover body H by providing the attachment protrusion 33.

  In particular, in the present embodiment, the base 3 is held by the base holding the end binding pins 4 so that the clear pocket P can be easily inserted and removed even when the hinge is provided and attached to the cover body H. Both end portions of the main body 31 are separated from the hinge forming portion 32 through the slits 34, and elastic deformation of the separated base main body 31 is promoted.

  In this embodiment, in order to prevent the intermediate portion of the clear pocket P from being lifted and separated from the intermediate binding pin 6 more reliably, in the present embodiment, the lid 7 is attached to the intermediate binding pin 6 and the intermediate binding pin 6 in the mounted state (S). It has a plate-like shape having an intermediate engaging claw 73 and an end engaging claw 72 which are engaged with the end binding pins 4. Moreover, it is supposed that the thickness of the whole binding tool 2 is effectively suppressed by making the lid 7 into a plate shape.

  In this embodiment, in order to further reduce the thickness of the binding tool 2 in the mounted state (S), the lid body 7 is provided with a notch 75 for avoiding interference with the hooking member 5. In the mounted state (S), the outer surface 7a of the lid 7 and the outer surface 5a of the hooking member 5 are set to be substantially flush with each other. This effectively avoids an increase in the thickness of the binding tool 2 due to the thickness of the hook member 5.

  The file 1 according to the present embodiment including such a binding tool 2 has a rail H6 that holds the mounting protrusion 33 provided on one side edge side of the hinge forming portion 32 in the binding tool 2 side in a detachable manner. By using the provided cover body H, the binding tool 2 can be easily attached to and detached from the cover body H.

  In order to detachably attach a plurality of binding tools 2 to a common cover body H, the file 1 according to the present embodiment uses the cover body H as a back cover and a rail seat H5 having a plurality of parallel rails H6. The inner surface of H3 is provided. In particular, in the present embodiment, the thin portion 33a on the binding tool 2 side and the rail sheet H5 are appropriately deformed to effectively avoid the plurality of binding tools 2 from being bulky in the cover body H.

  Although the embodiment of the present invention has been described above, the specific configuration of each unit is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the rail sheet discloses a mode in which a total of four binding tools can be attached, but of course, the number of binding tools that can be attached to the cover body is not limited. In the above embodiment, the lid can cover almost the entire area of the base body, but of course, only the intermediate binding pins may be covered so as to prevent the intermediate binding holes from being pulled out. You may comprise a cover body separately with respect to a base. Further, specific modes such as the specific shape of the binding pin and the direction in which the hooking member extends are not limited to those of the above embodiment, and various modes including the existing ones can be applied. .

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  The present invention can be used as a binding tool for binding a refill such as a clear pocket and a file having the binding tool.

DESCRIPTION OF SYMBOLS 1 ... File 2 ... Binding tool 3 ... Base 31 ... Base main body 32 ... Hinge formation part 33 ... Mounting protrusion 34 ... Slit 4 ... End binding pin 5 ... Hook member 6 ... Intermediate binding pin 7 ... Lid 72 ... End Engaging claw 73 ... Intermediate engaging claw 75 ... Notch H ... Cover body H6 ... Rail H5 ... Rail sheet S ... Installation state P ... Refill (clear pocket)
P1 ... Binding hole P2 ... End binding hole P3 ... Intermediate binding hole

Claims (10)

A binding tool for binding a refill having three or more binding holes on a binding source side, a base for holding one side of the refill, and an end binding hole of the refill provided at both ends of the base. When the end binding pins that are engaged with each other and the ends of the end binding pins are cantilevered in the direction intersecting the axis of the end binding pins and the axis is not orthogonal to the surface of the refill A hook member that allows insertion and removal of the refill with respect to the end binding pin, an intermediate binding pin that is provided on the base and engages with the intermediate binding hole of the refill, and is attached to and detached from the tip of the intermediate binding pin. A binding tool comprising: a lid that is arranged so as to prevent the refill from being detached from the intermediate binding pin. The binding tool according to claim 1, wherein the base includes a thin plate-like base main body that is elastically deformable in a thickness direction, and the end binding pins are provided on the base main body. The binding tool according to claim 1 or 2, wherein the both hook members are in the form of a pair of thin plates extending in opposite directions. The base includes a thin plate-like base body that is elastically deformable in the thickness direction,
The lid is rotatably supported on the base via a hinge, and the base is provided with a hinge forming portion for constituting the hinge on one side edge side of the base body. The binding tool according to claim 1, 2, or 3. The binding tool according to claim 4, wherein the base includes an attachment protrusion for attaching to the cover body on one side edge side of the hinge forming portion. The binding tool according to claim 4 or 5, wherein the base is obtained by cutting both end portions of the base main body holding the end binding pins from the hinge forming portion through slits. The said cover body is a plate-shaped thing which has the intermediate | middle engagement claw and end part engagement claw which are engaged with the said intermediate binding pin and the said end binding pin in a mounting state. The binding tool according to 4, 5, or 6. The lid is provided with a notch for avoiding interference with the hook member, and is set so that the outer surface of the lid and the outer surface of the hook member are substantially flush with each other in the mounted state. A binding tool according to claim 1, 2, 3, 4, 5, 6 or 7. A file in which the binding tool according to claim 5 is attached to a cover body, wherein the cover body is provided with a rail for holding the attachment protrusion in a detachable manner. The cover body, which includes a rail seat having a parallel plurality the rails on the inner surface of the back cover, the claim 9, wherein the file attached detachably to the binding device on each rail.

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