JP4077243B2 - Binding tool, file and binding foot - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a binding tool in which an effective pull-out length of a binding foot can be appropriately changed, a file using the binding tool, and the binding foot.
[0002]
[Prior art]
One type of binding tool used for a file or the like is one using a binding foot. This type of binding tool is drawn out through an opening provided in the substrate portion, the base end side being fixed to the substrate portion, and the distal end side being provided in the substrate portion, along the edge of the binding side of the paper sheet. A binding foot locking portion that holds the binding foot by inserting a paper sheet between the plurality of binding feet and the substrate portion, and inserting and bending the leading end side of the binding foot into a part thereof. It has.
[0003]
[Problems to be solved by the invention]
However, in the conventional binding tool, the effective pull-out amount on the front end side of the binding foot that is pulled out from the opening is always constant, so that there is a lot of extra length when the binding foot is bent and locked when there are few paper sheets to be sandwiched As the number of paper sheets to be sandwiched increases, the extra length decreases. Accordingly, if the binding legs are sufficiently long so that a relatively large number of paper sheets can be sandwiched, there is a problem that the binding legs become an obstacle when there are few paper sheets to be sandwiched. For example, in the case of the specification in which the binding foot when fixed is in a direction orthogonal to the edge, the binding foot in the bound state becomes an obstacle when the document or the like is opened, and the binding foot when fixed is Depending on the amount of the paper sheets to be sandwiched, the binding foot may protrude from the paper sheets and the appearance will be remarkably deteriorated, which may hinder storage.
[0004]
In order to solve such a problem, for example, the base ends of the two binding feet are connected to each other, and the effective drawing amount from the opening of the binding feet is maintained while the amount of paper sheets to be sandwiched is small. Is used in a state where the amount of paper sheets to be sandwiched is increased, the connecting portion on the proximal end side of the binding foot is cut, and the proximal end portions of the two binding feet separated as a result of the cutting are respectively described above. A configuration is also conceivable in which the hook can be changed so that the effective pull-out amount of the binding foot pulled out from the opening is increased.
[0005]
However, in this case, when the effective pull-out amount is short, the binding leg pulled out from the opening becomes immersible in the opening by being pushed from above, so when inserting paper sheets Even if the paper sheet is inserted properly, the paper sheet will become a stage that operates the binding foot locking part and is locked with a part of the binding foot entering the opening. Malfunctions such as binding in a loose state and causing slack are likely to occur.
[0006]
The present invention has been made paying attention to such a problem, and can appropriately adjust the extra length of the binding foot according to the binding amount of the paper sheets, and at the same time, does not cause inconvenience in handling. The present invention intends to provide a new and useful binding tool, file and binding foot.
[0007]
[Means for Solving the Problems]
In order to achieve this object, the present invention employs the following configuration.
[0008]
That is, the binding tool of the present invention includes a substrate portion disposed along an edge portion on the binding origin side of a paper sheet, and a base end side supported by the substrate portion and a distal end side provided through an opening provided in the substrate portion. A binding foot locking portion that holds the binding foot by inserting and bending a paper sheet between the plurality of binding feet pulled out and the substrate portion, and inserting and bending the leading end side of the binding foot into a part thereof And an effective pull-out amount on the front end side of the binding foot drawn from the opening is assumed to be at least changeable from a short state to a long state. In addition, an engaging portion that is hooked to the opening edge on the drawer end side of the opening of the substrate portion when the effective pull-out amount is short is provided in a part of the binding leg.
[0009]
In such a case, when the effective pull-out amount is short, even if the binding foot pulled out from the opening is inadvertently pressed from above, the operation of entering the opening is restricted by the presence of the engaging portion. Will be. For this reason, a stable pull-out state of the binding foot is ensured when the paper sheet is inserted, and the paper sheet remains in a loose state due to a defective pull-out of the binding foot even when the binding foot locking portion is operated. It is possible to effectively prevent malfunctions such as binding.
[0010]
State in order to ensure the effective is the base end portion of the binding leg, through inserting an effective withdrawn amount attachable to the substrate portion in the short state and the sheet of the mounting state to the binding Ji foot invention There are those that can be released without any change.
[0011]
In particular, a plurality of attachment holes are provided in the substrate portion, and the first attachment state in which the base end portion is detachable into one attachment hole and the distal end side is inserted into the other attachment hole while being attached to the binding foot, A configuration in which the base end portion is extracted from the one mounting hole and the second mounting state engaged so that it cannot be pulled out to the other mounting hole can be selected, that is, the pulling amount In the first mounting state, it is preferable that the engaging portion is provided in the other mounting hole of the binding foot or a portion located in the vicinity thereof in the first mounting state. .
[0012]
When the binding foot is such that the cross-sectional shape of the main body is substantially constant along the longitudinal direction, and the engaging portion is formed by constricting a part of the main body, As an effect other than the above, as a result that the constricted portion becomes easier to bend than those not provided with such a structure, the fit in the opening of the binding foot is improved, and the drawer portion can be properly erected, or , The waiting part of the binding leg that is still waiting to be pulled out swells and loosens, causing an unstable mounting state or causing a part of the length necessary for binding. This can also be effectively prevented. In addition, if the bending function is not impaired, the cross-section of the constricted portion can be the same thickness as before, and the other portions can be made thicker than before, so that this can be used to compensate for the weakness of the binding foot. It is also effective in using the structure.
[0013]
This constriction is preferably applied to the surface located on the folding side and / or the back surface thereof when the binding leg is bent to be pulled out from the opening.
[0014]
Alternatively, it is also effective that the binding leg has a cross-sectional shape of the main body substantially constant along the longitudinal direction, and the engaging portion is formed by expanding a part of the main body. is there. Even if such an expanded portion is provided, the boundary portion with the normal cross-sectional portion is likely to be bent and the strength of the expanded portion is increased, so that the operational effect equivalent to the case of providing the constriction is exhibited.
[0015]
This expansion is also preferably performed on the surface located on the folding side and / or on the back surface when the binding foot is folded to draw out the binding foot from the opening.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0017]
As shown in FIG. 1 and FIG. 2, the file F using the binding tool 1 according to the present embodiment includes a front cover 2 and a presser plate portion 3 having a long and narrow plate shape formed by folding one end of the front cover 2. The back cover 4 that is further folded from the pressing plate 3 to the opposite side of the cover 2, the back cover 5 that is separated from the cover 2, and the elongated plate that is formed by folding one end of the back cover 5. A base plate portion 6 to be formed, a pair of binding legs 7 in which a base end portion 72 is attached to the base plate portion 6 and a paper sheet P is inserted through the tip end portion thereof, and extends along the longitudinal direction of the base plate portion 6. A binding foot locking portion 8 configured to be locked by being inserted into a part of the binding foot 7 and bent is provided. In FIGS. 1 and 2, the paper sheet P is indicated by an imaginary line.
[0018]
The front cover 2, the presser plate portion 3, and the spine cover 4 are formed by folding one sheet of paper S1, and the folded portion is used as the presser plate portion 3, and the cover plate 2 is sandwiched between the presser plate portions 3. And the back cover 4 are arranged adjacent to each other. On the other hand, the back cover 5 and the substrate 6 are formed by folding the end of one sheet of paper S 2, and the folded portion is the substrate 6. Further, a portion constituting the back cover 5 is formed in a bag shape opening to the binding base side, and a spine cover insertion portion 5a into which the spine cover 4 can be inserted is formed. That is, the width of the binding region formed between the substrate portion 6 and the pressing plate portion 3 can be changed, and a large amount of paper sheets P can be stored as necessary.
[0019]
Of course, in order to do so, a bag-like spine cover insertion portion is formed in a portion constituting the front cover 2 and a spine cover 4 is formed on the back cover 5 side, and the spine cover 4 is attached to the spine cover. It can also be configured to be inserted into the insertion portion.
[0020]
Binding foot 7, as shown in FIG. 3, the binding leg body 71 having a predetermined length required for filing, a proximal portion 72 which is provided on the proximal end of the binding leg body 71, these binding Ji legs It is a substantially T-shaped thing which consists of the resin hinge part 73 which connects between the main body 71 and the base end part 72. FIG. The binding foot main body 71 basically has an equal cross-sectional shape close to a rectangle over substantially the entire region, grooves 71a are provided at a predetermined pitch on a part of one side surface, and the other side surface is gently recessed. A part of the binding foot main body 71, specifically, a predetermined distance from the resin hinge portion 73 (this distance substantially corresponds to a separation distance between an inner mounting hole 6a and an outer mounting hole 6b described later) toward the distal end side. The displaced position is set to a bending position when the sheet is bent and pulled out from the mounting hole 6a described later, and a surface located on the bending side of the binding foot main body 71 in the vicinity of this position and a part of the back surface thereof are formed in a "<" shape. The constricted portions 71b and 71c are formed by stealing the meat. In this embodiment, the narrowed portion 71b on one side located on the inner side during bending is set to have a narrower width and depth smaller than the narrowed portion 71c on the other side located on the outer side. The base end portion 72 is a plate-like member extending in a direction orthogonal to the binding foot main body 71 and can swing in the directions of arrows a and b in FIG. 3 with respect to the binding foot main body 71 via the resin hinge portion 73. Yes, it is possible to change the posture from the T-shape so as to be superposed on both the one side and the other side of the binding foot main body 71 in parallel with the binding foot main body 71. It is when the binding foot 7 is actually attached to the cover body when used in the direction of the arrow a to cause it to overlap with one side surface (in the state shown in FIG. 6), and to overlap with the other side surface. 7 is inserted through the outer mounting hole 6b (at the time of the operation subsequently performed in the state indicated by the imaginary line in FIG. 8). The overlapping portions are thinned in comparison with the other portions of the binding foot main body 71 and the base end portion 72, and the overlapping portions form the same cross section as the equal cross-section portion of the binding foot main body 71 as a whole. . In other words, the base end portion 72 can be formed by cutting and raising a part of the binding foot main body 71.
[0021]
On the other hand, the substrate portion 6 shown in FIG. 1 is provided with a plurality of pairs (here, two pairs) of attachment holes 6a and 6b through which the binding feet 7 are inserted and locked. Of the two pairs of mounting holes 6a and 6b, the pair of inner mounting holes 6a located on the inner side corresponds to the opening of the present invention for pulling out the binding foot 7 toward the binding region, and this inner mounting hole 6a. The binding foot main body 71 is inserted toward the binding area, that is, toward the front cover 2. As shown in FIGS. 6 and 8, the inner mounting hole 6a is formed in a rectangular shape having a width and a height dimension through which only the binding foot main body 71 is inserted and the base end portion 72 is not inserted. The equal cross-sections other than the constricted portions 71b and 71c of the binding foot main body 71 pass through the inner periphery of the inner mounting hole 6a relatively tightly, and the constricted portions 71b and 71c pass through the inner mounting hole 6a with some play. Is set to On the other hand, the outer mounting hole 6b located outside has a rectangular shape, the side orthogonal to the edge passes through the binding foot main body 71 and the base end, and the side parallel to the edge is the base end of the binding foot 7. It is shorter than the length of 72, and is set to have a dimensional relationship that allows the base end portion 72 to pass through in an oblique direction in a state of being superimposed on the other side surface of the binding foot main body 71 (the direction of arrow b in FIG. 3). .
[0022]
That is, when the binding foot 7 is inserted through the outer attachment hole 6b along the edge PS on the binding source side of the paper sheet, the base end portion 72 is locked to the outer attachment hole 6b. Then, the front end side of the binding foot main body 71 is inserted into the inner mounting hole 6a located at a position separated from the outer mounting hole 6b and pulled out again to the front cover 2 side. In the binding area formed in (3), paper sheets can be inserted through the binding foot 7. Hereinafter, the attached state of the binding foot 7 will be referred to as a first attached state. In the first attachment state, the constricted portions 71b and 71c are set so as to be located in or near the inner attachment hole 6a as shown in FIGS. 6 and 8, and the constricted portions 71b and 71c An inclined portion (especially the 71c side) that is going to be thick functions as the engaging portion 74 of the present invention, and an opening edge of the inner mounting hole 6a at a portion where the engaging portion 74 is pulled out from the inner mounting hole 6a. To be caught in.
[0023]
Then, from this state, an operating force is applied to the pulled-out portion of the binding foot main body 71 to slightly push it into the anti-binding region side (arrow X side in FIG. 6), and there is some play in the standby portion 71x that has not yet been pulled out. After making the state, the base end portion 72 is swung in the direction of the arrow b to overlap the other side surface of the binding foot main body 71, and in this state, the distal end side is passed through the outer mounting hole 6b and the front end side is bound to the binding region. By pulling out toward the side opposite to the arrow X, the engagement destination of the base end portion 72 is changed to the inner mounting hole 6a as shown in FIG. 9 without completely pulling out the binding foot 7 from the substrate portion 6. As a result, the standby portion 71x is extended so that the effective withdrawal amount can be increased. Hereinafter, the attachment state of the binding foot 7 will be referred to as a second attachment state.
[0024]
On the other hand, as shown in FIG. 2, the presser plate portion 3 is provided with a pair of upper insertion holes 3 a through which the binding legs 7 are inserted at positions overlapping with the inner mounting holes 6 a. The binding foot locking portion 8 is attached to the presser plate portion 3 via a stopper 31 and a stopper attachment hole 3b.
[0025]
As shown in FIGS. 4 and 5, the binding foot locking portion 8 in this embodiment is configured by engaging a pair of sliders 81 so as to hold each other. The slider 81 has a binding foot insertion hole 81 a for inserting the binding foot 7, a long hole 81 b slidably engaged with the stopper 31 so as not to fall off, an opening knob 811, and a closing knob 812. Are provided one by one. More specifically, an opening knob 811 is provided at one end portion of each slider 81, and a base portion 813 is formed at the other end portion. Claws are provided at both ends of the lower end portion of the opening knob 811, and the claw is engaged with the base portion 813 of the other slider 81 with the claw. Then, so that relatively moving to the position of FIG. 4 that can open the foot binding both sliders 81 by pulling in the direction Aiyoru both open knob 811 (i.e. binding Ji position to open the foot insertion hole 81a). Further, from the base portion 813, only one half in the width direction is extended toward the opening knob 811 to form a guide portion 814. The inner surfaces of the guide portions 814 of the pair of sliders 81 face each other. On the other hand, a closing knob 812 is formed at a substantially central portion of the guide portion 814. The closing knob 812 has a shape straddling the other slider 81, and the opening knob 811 overlaps with the binding foot insertion hole 81a by closing both closing knobs 812 in the direction of closeness to the position shown in FIG. The binding leg 7 is locked at the locking position S shown in FIG. 1 where the binding leg 7 is bent and locked between the opening knob 811 and the binding leg insertion hole 81a. The base portion 813 is provided with a groove 813a for storing the binding foot 7 bent along the edge portion.
[0026]
This file F is used as follows.
[0027]
First, as shown in FIGS. 1 and 2, when the amount of paper sheets P is small, the effective length of the binding foot 7 is set with the proximal end 72 of the binding foot 7 engaged with the outer mounting hole 6b. Keep it short. Next, the binding foot main body 71 is inserted through the insertion hole PH of the paper sheet P by a two-hole punch or the like. When the amount of paper sheets P increases, the base end 72 of the binding foot 7 and the outer mounting hole 6b are disengaged to pull out the binding foot main body 71, and the base end 72 is pulled out to the inner mounting hole 6a. In this state, the effective length of the binding foot 7 is increased. Thereafter, the binding foot main body 71 is inserted into the binding foot insertion hole 81 a of the binding foot locking portion 8, and both the closing knobs 812 are pulled in the close direction to lock the binding foot 7 at the locking position S. A plan view of the state where the binding foot 7 is locked is shown in FIG. Further, when the paper sheet P is taken out, the both opening knobs 811 of the binding foot locking portion 8 are pulled in the direction of approaching and the binding foot 7 is unlocked. When the amount of the paper sheet P is reduced again, the effective length of the binding foot 7 is obtained by retracting the binding foot main body 71 and again engaging the base end portion 72 of the binding foot 7 with the outer mounting hole 6b. To the original short state.
[0028]
In this way, in the present embodiment, the attachment position of the base end portion 72 of the binding foot 7 is selectively changed between the inner attachment hole 6a and the outer attachment hole 6b, and the inner attachment hole 6a and the It is easy to extend the effective length of the binding foot 7 by the distance from the outer mounting hole 6b (the waiting area 71) or shorten it to the original length without pulling out the binding foot 7. It is something that can be done.
[0029]
In adopting such a configuration, in this embodiment, the opening on the drawer end side of the inner mounting hole 6a which is the opening of the substrate portion 6 is formed in a part of the binding leg 7 when the effective drawer amount is short. Since the engaging portion 74 shown in FIG. 8 that is hooked on the edge is provided, the binding foot 7 drawn out from the inner mounting hole 6a is indicated by an arrow Z in the drawing when the effective pull-out amount is short. Even if the binding foot main body 71 is pushed inadvertently from above, the movement of the binding foot main body 71 to be immersed in the inner mounting hole 6a is restricted by the presence of the engaging portion 74, and as shown by an imaginary line in FIG. Immersion is prevented. For this reason, when the paper sheet P is inserted, it is possible to maintain a stable pulled-out state of the binding foot 7 toward the closed region side, which is a step for operating the binding foot locking portion 8. Therefore, it is possible to effectively prevent a malfunction in which the paper sheet P is bound in a relaxed state as indicated by the imaginary line due to the defective drawing of 7.
[0030]
In particular, the binding foot 7 of the present embodiment can be attached to the base plate portion 6 with the base end portion 72 shortened in the effective drawer amount, and the paper sheet P is inserted into the binding foot 7 in the attached state. Since it can be released in the state, it is avoided as much as possible to completely remove the binding foot 7 from the inner mounting hole 6a, the operation is simplified, and the binding foot 7 rubs against the opening edge of the inner mounting hole 6a. The function of the engaging portion 74 can be secured by effectively preventing the sag of the opening edge that is caused by being present.
[0031]
In particular, in this embodiment, a plurality of mounting holes 6a and 6b are provided in the base plate portion 6, and the base end portion 72 can be pulled out to the outer mounting hole 6b to the binding foot 7 so that the distal end side is the inner mounting hole 6a. The first mounting state inserted through the second mounting state and the second mounting state in which the base end portion 72 is pulled out from the outer mounting hole 6b and cannot be pulled out into the inner mounting hole 6a can be selected. In the first attachment state, the engaging portion 74 is provided in the inner attachment hole 6a of the binding foot 7 or a portion located in the vicinity thereof so that the amount of withdrawal can be switched repeatedly. It is a thing. For this reason, the effect of the present invention is not limited to the initial use and is continuously exhibited in the file of the present embodiment in which there are many opportunities to use with the effective pull-out amount of the binding foot 7 shortened.
[0032]
In addition, in the present embodiment, with respect to the binding foot main body 71 in which the cross-sectional shape of the main body 71 is substantially constant along the longitudinal direction, the engaging portion 74 is constricted to a part of the main body 71, As a result of forming the binding foot main body 71 more easily in the constricted portions 6a and 6b than in the case without such a constricted structure, the inner mounting hole of the binding foot 7 is formed. The effect of allowing the drawer part to stand up properly from the substrate part 6 with good fit in the inside 6a, and the waiting part 71x of the binding leg 7 that has not been pulled out yet are loosened, causing a binding failure. Or the inconvenience of taking a part of the length necessary for binding can be effectively eliminated. If the bending function is not impaired, the cross-sections of the constricted portions 6a and 6b can have the same thickness as the conventional one, and the other portions can be made thicker than the conventional one. This structure can also be used effectively when it is necessary to compensate.
[0033]
In particular, since these constricted portions 71b and 71c are provided on the surface located on the folding side when the binding foot 7 is bent to be pulled out from the inner attachment hole 6a and the back surface thereof, the bending operation is easily caused. The engaging portion 64 is also easily engaged with the opening edge of the attachment hole 6 a due to the elasticity of the binding foot 7.
[0034]
Although one embodiment of the present invention has been described above, the specific configuration of each part is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
[0035]
For example, in the above embodiment, the engaging portion is formed by constricting a part of the main body of the binding foot main body in which the cross-sectional shape of the main body is substantially constant along the longitudinal direction. As shown in FIG. 5, by providing an expanded portion 710 in which a part of the binding foot main body 71 is expanded by a method such as thickening, the gradually expanded portion is used as the engaging portion 174. It may be what you did. Also by the engaging part 174 by such expansion, the boundary part with the normal cross-sectional part is easily bent and the strength of the expanded part is increased, so that the operational effect equivalent to the case of providing the constricted part is exhibited.
[0036]
As shown in the figure, this expansion is performed on the surface opposite to the folding side when the binding foot 7 is bent to be pulled out from the opening, and a mode applied to the surface on the folding side can be adopted as necessary. .
[0037]
It is also effective to make the thickness d1 of the binding foot main body at the distal end side relative to the engaging portion thicker than the thickness d2 of the binding foot main body at the base end side. This is because the latter may be present in the opening for a long period of time, whereas the former is merely the insertion of the binding foot 7 over time.
[0038]
【The invention's effect】
Since the present invention has the above-described configuration, it is possible to appropriately adjust the extra length of the binding foot according to the binding amount of the paper sheets, and at the same time, a new and useful binding that does not cause inconvenience in handling. Tools, files and binding feet can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view of a file using a binding tool according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a file using the binding tool according to the embodiment.
FIG. 3 is a view showing a binding foot of a file using the binding tool according to the embodiment in a plane, a side, and a cross section.
FIG. 4 is a view showing an open state of a binding leg locking portion of a file using the binding tool according to the embodiment, on each of a plane surface and a side surface.
FIG. 5 is a diagram showing a closed state of a file binding foot locking portion of the file using the binding tool according to the embodiment, in a plane and a side.
FIG. 6 is a view showing an attachment portion of a file binding leg using the binding tool according to the embodiment;
FIG. 7 is a view showing a first attachment state in which a file binding leg using the binding tool according to the embodiment is locked;
FIG. 8 is an operation explanatory diagram of the embodiment.
FIG. 9 is a view showing a second attachment state in which a file binding leg using the binding tool according to the embodiment is locked;
FIG. 10 is a diagram showing another embodiment of the present invention.
[Explanation of symbols]
P ... paper sheets 6 ... substrate part 6a ... opening (internal mounting hole)
6b ... outer mounting holes 7 ... binding Ji legs 8 ... binding Ji foot engaging portion 71b, 71c ... constricted portion 74,174 ... engaging portion 710 ... expanding portion

Claims (10)

A substrate portion disposed along the edge of the binding side of the paper sheet, a plurality of binding feet that are supported by the substrate portion on the base end side and drawn out through an opening provided in the substrate portion on the base end side; A paper sheet is sandwiched between the substrate portion and a binding foot locking portion that locks the binding foot by inserting and bending the front end side of the binding foot into a part thereof, and is pulled out from the opening. The effective pull-out amount on the front end side of the binding foot can be changed from at least a short state to a long state ,
The binding foot connects a binding foot main body having a required length necessary for binding, a base end portion provided on a base end side of the binding foot main body, and the binding foot main body and the base end portion. A substantially T-shape consisting of a resin hinge part,
A part of the binding foot main body is provided with an engaging portion that is hooked to the opening edge on the drawer end side of the opening of the substrate portion when the effective pull-out amount is short .
The base end portion swings through the resin hinge portion and can be superposed on the side surface of the binding foot main body, and the overlapping portion is made thinner than the other portions in the binding foot main body and the base end portion. binding device, characterized in that are. The binding tool according to claim 1, wherein the base end portion is formed by cutting and raising a part of the binding foot main body . A plurality of mounting holes in the substrate portion, a first mounting state in which the base end portion is detachable into one mounting hole and the distal end side is inserted into another mounting hole, and the base end The first mounting state is configured so that the second mounting state can be selected so that the portion can be extracted from the one mounting hole and cannot be pulled out to the other mounting hole. The binding tool according to claim 2, wherein an engaging portion is provided in the other attachment hole of the binding foot or a portion located in the vicinity thereof. The binding leg has a cross-sectional shape of the binding leg main body substantially constant along the longitudinal direction, and the engaging portion is formed by constricting a part of the binding leg main body. The binding tool according to 2 or 3. The binding tool according to claim 4, wherein the binding is applied to a surface located on a folding side and / or a back surface of the binding foot when the binding foot is bent to be pulled out from the opening. 2. The binding leg has a cross-sectional shape of the binding leg main body substantially constant along the longitudinal direction, and the engaging portion is formed by expanding a part of the binding leg main body. The binding tool according to 2 or 3. The binding tool according to claim 6, wherein the spreading is performed on a surface located on a folding side and / or a back surface thereof when the binding leg is bent to be pulled out from the opening. A file comprising the binding tool according to claim 1, 2, 3, 4, 5, 6 or 7 in a binding area between a front cover and a back cover. It is used for constituting the binding tool according to claim 1, 2, 3, 4, 5, 6 or 7,
A binding foot main body having a required length necessary for binding, a base end portion provided on a base end side of the binding foot main body, and a resin hinge portion connecting the binding foot main body and the base end portion. It has a substantially T-shape,
A part of the binding foot main body is provided with an engaging portion that is hooked to the opening edge on the drawer end side of the opening of the substrate portion when the effective pull-out amount is short .
The base end portion swings through the resin hinge portion and can be superposed on the side surface of the binding foot main body, and the overlapping portion is made thinner than the other portions in the binding foot main body and the base end portion. A binding leg. It is used for configuring the file according to claim 8,
A binding foot main body having a required length necessary for binding, a base end portion provided on a base end side of the binding foot main body, and a resin hinge portion connecting the binding foot main body and the base end portion. It has a substantially T-shape,
A part of the binding foot main body is provided with an engaging portion that is hooked to the opening edge on the drawer end side of the opening of the substrate portion when the effective pull-out amount is short .
The base end portion swings through the resin hinge portion and can be superposed on the side surface of the binding foot main body, and the overlapping portion is made thinner than the other portions in the binding foot main body and the base end portion. A binding leg.

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