JP2004122486A - Document binding implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a document binding implement which does not impair operability when a document etc. is drawn or inserted in an open state while the document etc. is tightly held in engagement in a closed state for containing the document etc. <P>SOLUTION: The document binding implement includes a substrate 1, a pair of right and left retaining plates 3 mounted rotatably and detachably with respect to the substrate 1 by using a predetermined means for engaging, binding rods 4 continuously provided from the one of a pair of the plates 3, and binding pipes 5 corresponding to the number of the rods continuously provided from the other of the pair of the plates 3. The rods 3 are respectively inserted into the pipes 5 to realize containing of the perforated document, etc. between the pair of the plates 3, while the document, etc. can be drawn or inserted by releasing the means for engaging the right or left plate 3 with the substrate 1. The engaging means includes an engaging and disengaging suppressing means for energizing the plates 3 in a direction for strengthening the engaging degree when the plates 3 approach to the substrate 1. The suppressing means does not affect an influence to an operation of rotating in a state in which the substrate 1 and the plates 3 are mounted by the engaging means. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a document binding device in a binder, a file, or the like which can easily store and save a document or material by a binding device fixed inside the document or material.
[0002]
[Prior art]
As a binding tool for filing a document perforated at one edge, a board, a pair of holding plates, a binding pipe fixed to one holding plate, and a binding rod fixed to the other holding plate. It is known that a document or the like perforated between the pair of holding plates can be stored by inserting the binding rod into the binding pipe. In such a binding device, one holding plate is detachably attached to the substrate, and the other holding plate is rotatably attached to the substrate, so that the detachable holding plate is released from the substrate to bind with the binding rod. A configuration in which the inserted state with the pipe is released to enable the removal and insertion of documents and the like (open state), while the state where the detachable holding plate is attached to the substrate (closed state) can hold the stored documents and the like. It has become.
[0003]
As a further improvement in usability, any one of the pair of holding plates can be attached to and detached from the substrate by attaching the pair of holding plates to the substrate so as to be rotatable and detachable using predetermined engagement means. A so-called double-sided file spelling device that allows the other side to be rotatably held on the substrate, so that documents and the like can be inserted and removed from either the right or left holding plate by the user's option. Exists.
[0004]
As an example of such a spelling tool, the spelling device has a pair of left and right upright plates rotatably attached to a substrate via a hinge portion, and the upright plate is brought into contact with the holding plate from outside in the left-right direction so that the upright position is achieved. In some cases, a plate and the holding plate can be engaged. In such a binding device, by opening one of the right and left standing plates to the outside and releasing the engagement with the corresponding pressing plate, it is possible to insert or remove a document or the like from that side. Patent Documents 1 to 12 disclose such types of spelling tools, for example.
[0005]
As means for maintaining the engagement state in the engagement means, there is a means provided with an engagement release suppressing means for urging in a direction to increase the degree of engagement. For example, in the above example, the upright plate is pressed against the holding plate in the engaged state by providing a winding spring in the hinge portion and biasing the upright plate in the upright direction.
[0006]
[Patent Document 1] Japanese Utility Model Application Laid-Open No. 56-154378
[Patent Document 2] Japanese Utility Model Publication No. 57-31107
[Patent Document 3] Japanese Utility Model Publication No. 57-38301
[Patent Document 4] Japanese Utility Model Application Laid-Open No. 62-136680
[Patent Document 5] Japanese Utility Model 1-20144
[Patent Document 6] Japanese Utility Model Publication No. 2-3466
[Patent Document 7] Japanese Patent Publication No. 4-35360
[Patent Document 8] Japanese Patent Publication No. Hei 7-115557
[Patent Document 9] Japanese Patent Application Laid-Open No. 8-300867
[Patent Document 10] JP-A-10-58880
[Patent Document 11] JP-A-11-180084
[Patent Document 12] Japanese Patent No. 3249015
[Problems to be solved by the invention]
By the way, in order to increase the holding force of a document or the like in the document spelling tool as described above, it is effective to increase the urging force of the engagement release suppressing means. However, in the above-described document spelling device, the engagement means has two functions of being rotatable and detachable in the relationship between the substrate and the holding plate at the same time. If the disengagement suppressing means for urging in the direction to increase the degree of engagement, which is a function related to the above, is provided, the urging force will necessarily extend to the function of being rotatable. In the above example, by pressing the upright plate in the upright direction, the pressing plate detachably engaged with the upright plate is also pressed, and the binding pipe or the binding rod connected to the pressing plate is moved in the horizontal direction. It will work as a force to maintain it. That is, by increasing the urging force, when the user attempts to insert or remove a document or the like, even if the user attempts to release the engagement between the right and left standing plates and the holding plate and rotate the holding plate, The urging force of the engaging means on the other side attempts to return to the original state, and impairs operability. This phenomenon is particularly remarkable when the amount of documents or the like stored is small because the urging force on the other side cannot be suppressed by the weight of the documents or the like.
[0008]
Accordingly, it is desired to provide such a document spelling device that retains engagement firmly in a closed state in which documents and the like are stored, but does not impair operability when inserting and removing documents and the like in an open state. Had been rare.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, a pair of left and right pressing plates that are rotatably and detachably attached to the substrate using predetermined engagement means, and a pair of left and right pressing plates. One or a plurality of binding rods are provided in series, and binding pipes corresponding to the number of the binding rods provided continuously from the other of the pair of pressing plates are provided, and the binding rods are inserted into the binding pipes. In this manner, a document or the like perforated between the pair of holding plates can be accommodated, while the engagement means between one of the right and left holding plates and the substrate is released to enable insertion and removal of the documents and the like. The engagement means includes an engagement release suppression means that urges in a direction to increase the degree of engagement only when the holding plate is close to the substrate; and Stage was set that does not affect the operation of the rotation in a state in which said substrate and pressing plate is attached by the relationship each other means. With such a configuration, the disengagement suppression means operates only when the holding plate approaches the substrate, that is, when the holding plate is to be attached to the substrate. Even if the biasing force of the means is set to be stronger, the operability when pulling out and inserting documents etc. is not impaired because the force to return it when trying to open one holding plate does not work, By setting the urging force higher, it is possible to increase the holding force of the document.
[0010]
More specifically, the engagement means includes a first engagement element provided on each of a pair of left and right upright plates rotatably attached to the substrate via a hinge portion, and the pair of holding members. A second engagement element provided on the plate, and the first engagement element and the second engagement element are engaged with each other by applying the upright plate to the holding plate from outside in the left-right direction. The engagement release suppressing means may simply push the erecting plate outward when the pressing plate is urged in a direction for erecting the erecting plate when approaching the hinge portion. In this case, the engagement with the pressing plate can be released, and the operating portion can be provided on the upright plate, so that further improvement in operability can be expected.
[0011]
Further, the hinge portion is rotatable around a shaft inserted into a bearing provided on the substrate and the upright plate, and the disengagement suppressing means is wound around the shaft. The first winding spring and a pressed piece protruding from the first winding spring, and the first plate is brought into contact with the pressed piece when the pressing plate approaches the hinge portion. If the biasing force of the winding spring is effective and biases the erecting plate in the upright direction, since the hinge portion and the first winding spring are held on the same shaft, the entire structure is simplified. be able to.
[0012]
Further, in order to simplify the structure of the first coil spring, the pressed piece may be formed by extending a part of the first coil spring in a direction in which the pressing plate contacts.
[0013]
On the other hand, if the hinge portion further has an engagement promoting means for constantly urging the upright plate in the upright direction, the upright plate is always in a position to be engaged with the press plate, so that the user can press the press plate. The spelling tool can be stapled with one touch simply by bringing the spelling tool close to the substrate.
[0014]
At this time, if the engagement promoting means is a second winding spring wound around the shaft, the hinge portion, the first winding spring, and the second winding spring are all held on the same shaft. Can have a simple structure.
[0015]
Furthermore, if the first coil spring and the second coil spring are wound around the shaft in a state of being adjacent to each other, the manufacturing process can be further simplified.
[0016]
In addition, even if the upright plate is in a falling state, when the pressing plate comes close to the hinge portion, if the pressing plate abuts on the pressing plate, the pressing plate can be used as a substrate. When the pressing plate presses down the pressed piece when the pressing plate approaches, the upright plate is automatically raised, so that the user can bind the spelling tool with one touch only by bringing the pressing plate close to the substrate.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
[0018]
In this specification, when referring to the left and right directions, the lower left direction in FIG. 1 is defined as left.
(First embodiment)
As shown in FIG. 1, the document spelling tool B in the present embodiment is detachable using a fastening piece P on the inner surface side of the spine S3 of the cover body S having the front cover S1, the back cover S2 and the spine S3. It is fixed to.
[0019]
The document spelling tool B includes a substrate 1, a pair of upright plates 2 rotatably attached to left and right ends of the substrate 1, a pair of press plates 3 that can be respectively disengaged from the pair of upright plates 2, Two binding rods 4 connected to one holding plate 3a and two binding pipes 5 connected to the other holding plate 3b are rough components.
[0020]
The board | substrate 1 is a board | substrate of a substantially vertically elongated rectangular shape, the left-right side edge part stands slightly in the vertical direction, and the bearing 11 is provided intermittently at the upper end part. A pair of left and right rectangular holes 12 are provided near the top and bottom, and a pair of right and left concave cutouts 13 are provided at the top and bottom edges, respectively. It is for fixing to.
[0021]
The pair of upright plates 2 are substantially rectangular plate-like pieces, and a bearing 21 provided intermittently at a base end which is one end edge of a long side, a notch hole 22, and a stopper 23 extending obliquely downward. In addition, a flange portion 25 for reinforcement is formed at the free end side corner portion, and an operation portion 26 for improving the finger contact at the time of attaching / detaching operation is folded back at the free end side central portion by folding. Provided. Further, a round engaging hole 27 is formed near the free end corner.
[0022]
The bearing 21 provided on the upright plate 2 and the bearing 11 provided on the substrate 1 together form a hinge portion h by the shaft A passing therethrough. The upright plate 2 is connected to the substrate 1 via the hinge portion h. Each is rotatably mounted.
[0023]
The hinge portion h further has a wound spring wound around the following two types of shafts A.
[0024]
The first coil spring S1 has a gap S11 and a tongue-shaped protrusion S12 at the center, and both ends S13 are fixed to the outer surface of the upright plate 2. The protruding portion S12 extends from the hinge portion h in a state where it can be pressed toward the center of the substrate 1 with the upright plate 2 standing up.
[0025]
The second winding spring S2 has one end fixed to the outer surface of the upright plate 2 and the other end thereof abutted against the side end of the substrate 1 so that the upright plate 2 is always upright with respect to the substrate 1. It is biased in the direction to become the state. The strength urged by the second winding spring S2 is set to such an extent that the upright plate 2 rotates from a horizontal state to an upright state without applying a load to the upright plate 2.
[0026]
The second coil spring S2 is located in the gap S11 of the first coil spring S1, and is wound around the axis A at the center of the hinge h.
[0027]
Thus, the upright plate 2 stands up against the substrate 1 by the urging force of the second winding spring S2 in the no-load state, and further prevents the stopper 23 from abutting against the substrate 1 to prevent the stopper 23 from falling further inward. It is kept upright. In this state, the first coil spring S1 does not operate.
[0028]
The pair of holding plates 3 are substantially rectangular plate-like pieces having dimensions similar to those of the upright plate 2, and a base end, which is one end edge of a long side, is attached to the upright plate 2 at the center of the substrate 1. An inner support leg 31 extends obliquely downward in the direction, an outer support leg 32 extends diagonally downward in a direction opposite to the inner support leg 31, and a pressing piece 33 protruding downward at the center. A concave portion 34 is formed in the central portion on the free end side, and a columnar engaging projection 35 is provided near the free end side corner portion. Further, flange portions are provided on three sides excluding the base end side. 36 are formed.
[0029]
When the holding plate 3 is engaged with the upright plate 2, the engagement protrusions 35 are engaged with the engagement holes 27 of the upright plate 2, and the upright plate 2 is fitted into the inside of the flange 32 almost exactly, and is free. The operation portion 26 of the upright plate 2 is exposed from the concave portion 34 provided at the center on the end side. At this time, the inner support leg 31 and the outer support leg 32 are positioned so as to straddle each other over the axis A of the hinge portion h, and the upright plate 2 and the pressing plate 3 are integrally rotated about the axis A.
[0030]
In this state, the pressing piece 33 presses down the protrusion S12 provided on the first coil spring S1, and the urging force generated by this presses the engaging projection 35 and the engaging hole 27 of the upright plate 2 to engage. In this case, a lateral pressing force is applied to eliminate the backlash at the time of engagement, and at the same time, the urging force of the first coil spring S1 presses the upright plate 2 against the pressing plate 3.
[0031]
It should be noted that, even in this state, the urging force of the first coil spring S1 acts only on the engagement between the holding plate 3 and the upright plate 2. Therefore, even in this state, the urging force of the upright plate 2 to rotate in the upright direction with respect to the substrate 1 is only due to the second coil spring S2.
[0032]
The two binding rods 4 are cylindrical rods, and are fixed in a state in which the pressing plate 3 is engaged with the upright plate 2 and is upright on the opposite side to the surface with which the upright plate 2 comes into contact, that is, inside.
[0033]
The two binding pipes 5 are cylinders each having an inner diameter enough to allow the binding rod 4 to pass therethrough. Like the binding rod 4, the two binding pipes 5 also have the holding plate 3 engaged with the upright plate 2. Are fixed on the opposite side of the contact surface, that is, in a state of standing upright inside. In addition, the free end side small end 51 of the binding pipe 5 has a large cross section by being cut obliquely so that the binding rod 4 can be easily inserted.
[0034]
In a state in which the document binding device B having the above configuration is closed, the pair of pressing plates 3 are mounted on the standing plates, respectively, and the binding rod 4 is inserted through the binding pipe 5.
[0035]
In the above configuration, the first winding spring S1 is used as an engagement release suppressing means for pressing the upright plate 2 against the pressing plate 3 to suppress the release of the engagement therebetween. Function as engagement promoting means for constantly urging the upright plate in the upright direction.
[0036]
Next, an operation of opening and closing the document spelling tool B will be described.
[0037]
When the user intends to open the document spelling tool B in order to insert or remove a document or the like, first, any one of the left and right operation units 26 is pushed outward with a finger. Then, the presser plate 3 and the upright plate 2 are separated from each other on the free end side, so that the engagement state between the engaging projection 35 of the presser plate and the engaging hole 27 of the upright plate 2 is released, and the presser plate 3 is held down. Since the state in which the piece 33 has pressed down the protruding portion S12 provided on the first coil spring S1 is lost, the pressing plate 3 is lifted slightly above the standing plate 2.
[0038]
Next, the presser plate 3 released from engagement with the upright plate 2 is lifted. If the binding rod 4 and the binding pipe 5 are lifted so as to be perpendicular to the substrate 1, the center of gravity moves to the outside of the substrate 1, and the center of gravity no longer returns to its original state.
[0039]
Then, if the holding plate 3 on the side where the engagement is released is pulled upward and the binding rod 4 is pulled out from the binding pipe 5, it is possible to insert and remove a document.
[0040]
In this state, the biasing force of the second winding spring S2 on the right and left opposite sides acts in the direction of trying to raise the upright plate 2 on the left and right opposite sides, that is, in the direction of trying to return the raised holding plate to its original position. However, as described above, the strength urged by the second winding spring S2 is set so that the upright plate 2 rotates from the horizontal state to the upright state without applying a load to the upright plate 2. In the state where the pressing plate 3 is engaged with the upright plate 2 and the load of the binding rod 4, the binding pipe 5, the pressing plate 3 on the right and left opposite sides, and further the stored documents, etc. is applied, Since the urging force of the helical spring S2 has lost its weight, the force for returning the press plate 3 to the raised state does not act, so that the user does not hinder the operation of inserting and removing documents and the like. .
[0041]
On the other hand, when the user wants to close the document spelling tool B, the operation may be performed in the reverse of the above operation. That is, first, the binding rod 4 is inserted into the corresponding binding pipe 5, and then the lower pressing plate 3 is lowered while rotating the upper pressing plate 3 about the hinge portion h positioned below. Is placed on the protruding portion S12 provided on the first winding spring S1 (see FIGS. 5 to 6).
[0042]
In this state, if the upper part of the holding piece 33 is pressed with a finger, the projecting portion S12 of the coil spring S1 bends downward, and the holding piece 33 moves further downward. Then, the engaging hole 27 of the standing plate 2 already in contact with the holding plate 3 and the engaging projection 35 of the holding plate 3 are engaged by the urging force of the second winding spring S2. When the finger is released in this state, the upright plate 2 is pressed against the pressing plate 3 by the urging force of the first winding spring S1, and the pressing plate 3 is pushed upward, so that the engaging hole 27 of the upright plate 2 and the pressing hole are pressed. Since the engagement of the plate 3 with the engagement protrusion 35 increases the frictional force, the upright plate 2 and the pressing plate 3 are firmly engaged, and the closing operation is completed (the state of FIG. 7).
(Second embodiment)
As another embodiment according to the present invention, there is an embodiment in which the second winding spring S2 in the first embodiment is omitted.
[0043]
When the second coil spring S2 is omitted, the projecting portion S12 provided on the first coil spring S1 extends obliquely downward, and even when the upright plate 2 is in a substantially horizontal state, the pressing piece 33 of the corresponding pressing plate 3 is provided. Set to be able to contact.
[0044]
The other configuration is the same as that of the first embodiment, and the description is omitted.
[0045]
Next, an operation of opening and closing the document spelling tool B will be described with reference to FIGS. 4, 8, and 9. FIG.
[0046]
When the user intends to open the document spelling tool B in order to insert or remove a document or the like, first, any one of the left and right operation units 26 is pushed outward with a finger. Then, the presser plate 3 and the upright plate 2 are separated from each other on the free end side, so that the engagement state between the engaging projection 35 of the presser plate and the engaging hole 27 of the upright plate 2 is released, and the presser plate 3 is held down. Since the state in which the piece 33 has pressed down the protruding portion S12 provided on the first coil spring S1 is lost, the pressing plate 3 is lifted slightly above the standing plate 2. If the finger is released in this state, the upright plate 2 falls down in a substantially horizontal state as it is (see FIG. 8). Then, as in the first embodiment, the holding plate 3 released from the engagement with the upright plate 2 is lifted, and the binding rod 4 is pulled out from the binding pipe 5, so that a document can be inserted and removed.
[0047]
On the other hand, when the user wants to close the document binding tool B, first, as in the first embodiment, the binding rod 4 is inserted into the corresponding binding pipe 5, and then the upper holding plate is positioned. 3 is lowered while rotating around a hinge portion h located below.
[0048]
In this state, the upright plate 2 remains in a substantially horizontal state, but the distal end side of the protruding portion S12 of the first coil spring S1 is on an extension of the locus of the turning operation of the pressing plate 3. Therefore, if the holding plate 3 is lowered while rotating about the hinge portion h located below, the holding piece 33 of the holding plate 3 rides on the protruding portion S12 provided on the first coil spring S1.
[0049]
When the holding piece 3 is further moved downward, the projection S12 of the first coil spring S1 is pressed downward, so that the first coil spring S1 rotates about the axis A, and via both ends S13. The upright plate 2 is pushed in the upright direction. Then, the upright plate 2 is turned upright to a position where it comes into contact with the holding plate 3 with the hinge portion as a fulcrum (see FIG. 9).
[0050]
In this state, if the upper part of the holding plate 3 is pressed with a finger, the protrusion S12 of the coil spring S1 is bent downward, and the holding piece 33 is further moved downward. Then, the engaging hole 27 of the upright plate 2 already in contact with the pressing plate 3 engages with the engaging projection 35 of the pressing plate 3. When the finger is released in this state, the upright plate 2 is pressed against the pressing plate 3 by the urging force of the first winding spring S1, and the pressing plate 3 is pushed upward, so that the engaging hole 27 of the upright plate 2 and the pressing hole are pressed. Since the engagement of the plate 3 with the engagement protrusion 35 increases the frictional force, the upright plate 2 and the pressing plate 3 are firmly engaged, and the closing operation is completed.
[0051]
As described above, two embodiments of the present invention have been described in detail, but the present invention is not limited to the above-described embodiments.
[0052]
For example, in the above embodiment, two binding rods and two binding pipes are fixed, but the number is not limited. There are already four-hole document binders and even 26-hole and 30-hole binders on the market, and the present invention can be applied to any of them.
[0053]
Further, in the above embodiment, the upright plate and the holding plate are each made of a plate-like member, and have a shape that almost entirely overlaps with each other. What is necessary is that it be rotatable with respect to the substrate in the combined state, for example, an equivalent to an upright plate is a rod-shaped member provided so as to be able to undulate with respect to the substrate, so that it is engaged with the holding plate. Things are enough.
[0054]
It is not always necessary to provide an air gap in the first winding spring. The same effect can be obtained by winding around a shaft adjacent to the second winding spring.
[0055]
Further, the projection provided on the first coil spring may be one in which one end of the spring is extended. In this case, if a receiving portion of a pressing plate made of resin or the like is provided at the extended end portion, the reliability of the operation is increased.
[0056]
In addition, various modifications and applications are possible without departing from the gist of the present invention.
[0057]
【The invention's effect】
According to the document spelling implement of the present invention, the disengagement suppressing means operates only when the holding plate approaches the substrate, that is, only when the holding plate is attached to the substrate. Even if the biasing force of the release suppression means is set to be strong, the force to return one of the holding plates does not work when trying to open one of the holding plates. At the same time as the operability is not impaired, the holding force of the document can be increased when the bookbinding tool is closed by setting the biasing force to be strong.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state where a document spelling tool according to the present invention is mounted on a file cover.
FIG. 2 is a perspective view showing a first embodiment of the present invention.
FIG. 3 is a schematic exploded perspective view of the embodiment.
FIG. 4 is an exploded perspective view for explaining a structure of a hinge unit in the embodiment.
FIG. 5 is a sectional view of the embodiment in an open state.
FIG. 6 is a sectional view of the same embodiment in a semi-open state.
FIG. 7 is a sectional view of the embodiment in a closed state.
FIG. 8 is a sectional view of the second embodiment of the present invention in an open state.
FIG. 9 is a sectional view of the same embodiment in a semi-open state.
[Explanation of symbols]
B: Document spelling device 1: Board 2: Standing plate 26: Operation unit 27: Engagement hole (first or second engagement element)
3 ... pressing plate 33 ... pressing piece 35 ... engaging projection (second or first engaging element)
4 binding rod 5 binding pipe A shaft h hinge portion S1 first winding spring (engagement release suppressing means)
S12: Projecting portion (pressed piece)
S2: second winding spring (engagement promoting means)

Claims (8)

The board, a pair of left and right holding plates that are rotatably and detachably attached to the board using predetermined engagement means, and one or a plurality of binding rods continuously provided from one of the pair of holding plates, A binding pipe corresponding to the number of the binding rods continuously provided from the other of the pair of retaining plates, and a document perforated between the pair of retaining plates by inserting the binding rod into the binding pipe. And the like, while the release means of the engagement means between the right and left holding plates and the substrate enables the insertion and removal of documents and the like, and the engagement means is such that the holding plate is An engagement release suppressing unit that urges in a direction to increase the degree of engagement when approaching the substrate is provided. Characterized in that it is one which does not affect the operation of the rotation in a state mounted Te, documents spelling tools. The engagement means includes a first engagement element provided on each of a pair of left and right upright plates rotatably attached to the substrate via a hinge portion, and a first engagement element provided on the pair of holding plates. A second engagement element, wherein the first engagement element and the second engagement element are capable of engaging with each other by applying the upright plate to the holding plate from outside in the left-right direction. 2. The document spelling according to claim 1, wherein the disengagement suppressing unit urges the upright plate in a direction in which the upright plate rises when the holding plate approaches the hinge portion. 3. Utensils. The hinge portion is configured to be rotatable around a shaft inserted into a bearing provided on the base plate and the upright plate, and the disengagement suppressing unit is a first wound around the shaft. And a pressing piece protruding from the first winding spring. The pressing piece is brought into contact with the pressing piece when the pressing plate approaches the hinge portion, whereby the first winding spring 3. The document spelling tool according to claim 2, wherein the urging force is effective, and the urging force is urged in a direction in which the upright plate is erected. 4. The document spelling tool according to claim 3, wherein the pressed piece is formed by extending a part of the first winding spring in a direction in which the pressing plate contacts. The document spelling device according to claim 2, wherein the hinge portion further includes an engagement promoting unit that constantly urges the upright plate in the upright direction. The document binding device according to claim 5, wherein the engagement promoting means is a second winding spring wound around the shaft. The document binding device according to claim 6, wherein the first winding spring and the second winding spring are wound around the shaft so as to be adjacent to each other. The said piece to be pressed is arrange | positioned so that the said holding plate may contact, when the said holding plate approaches the said hinge part, even if the said standing plate is in the fall | fall state. 4. The document spelling tool according to 4.

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