JPH08142562A - Sheet file - Google Patents

Abstract

PURPOSE: To make it easy to turn over filed sheets by fixing a claw part formed on a presser plate member to a folding presser plate member and installing a fixing member which supports the other end of a spring member freely rotatably between it and the presser member. CONSTITUTION: A rectangular base 1, a lever member 2 extending along one edge part of the base 1 with one end supported freely rotatably on the angular part of the base 1, and a spring member 3 in which one end is fixed to the lever member 2 to deform upward the free end of the lever member 2 elastically and the other end extends on the base 1 on the side of a side surface facing a side surface on the side of one edge part of the base 1 of the lever member 2 are provided. In addition, a presser means 4 which is attached to the other end of the spring member 3 and pressed elastically toward the base 1 by the elastic force of the spring member 3 when the free end of the lever member 2 is pressed downward to hold the angular part of a sheet between it and the base 1 and a joining means 19 which joins the lever member 2 so that the free end of the lever member 2 is kept pressed downward when pressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding tool for binding one to many sheets of paper, and more specifically, a sheet of paper which is held by elastically pressing the corners of the sheets to be bound. Regarding binding tools.

[0002]

2. Description of the Related Art When relatively small sheets such as memos and slips are collectively stored, a memo holder or a memo binder provided with a pressing member on one side of a hard mount so as to constantly press the mount with a spring is used. Widely used. With such holders and binders, as soon as you receive or create a memo or voucher, you can open the pressing member and stack it on the backing sheet or on the already bound memo or voucher, and then just press it again with the pressing member. It is convenient because it can be easily bound and the pressing member can be removed simply by opening it. In this way, the idea of pressing and binding sheets is not limited to small sheets such as memos and slips, but also relatively large materials such as B5 and A4, and large sheets such as report paper or copy paper. It is also used as a binder. That is, the back cover of the cover consisting of the front cover, the back cover and the spine cover is provided with a pressing means for pressing the left side of the sheet to be bound. This pressing means is released when the lever whose one end is rotatably supported and the free end side of this lever is lifted, and is rotated when the free end side of the lever is rotated so that the lever becomes horizontal. The holding member has a strip shape that is elastically pressed to the side and presses the left side of the sheet to be bound.

Such holders and binders are not only easy to bind and remove the sheets as described above, but also include pipes, binding cords, binding strips, etc. for binding to the sheets. Since there is no need to make holes for passing through, it does not damage the paper sheet.

[0004]

The above-mentioned holders and binders are preferable in that they do not damage the paper sheets, but when one or more paper sheets are bound, it becomes difficult to flip them. Will end up. Further, in the case of a memo or a slip, the size thereof varies depending on the user or the size of the description content, and tends to be uneven. Therefore, if you bind all the sheets together regardless of size, you will be able to see these memos and slips later.
Especially when a small memo or a slip bound under a large memo or a slip is viewed, it may not be seen unless the memo or slip bound on it is bent strongly. However, if such a bending force becomes stronger than the pressing force of the pressing member, the memo or slip cannot be pressed and the memo or slip may come off from the pressing member.

Further, in the case of a relatively large paper sheet such as B5 or A4, the elasticity of the paper is larger than that of a memo or a slip,
A strong pressing force is required for the holding means. However, if a spring having a large spring elasticity is used to obtain a strong pressing force, a strong force is required to rotate the lever, which makes it difficult to handle. Furthermore, when a large number of paper sheets are bound, the binding margin portion becomes larger as it goes backward, and the edge of the open portion is covered with the binding margin and cannot be seen.

Therefore, the object of the present invention is to reliably hold a plurality of paper sheets without damaging them, and when turning, to see all the matters written on the paper surface, and even when a large number of paper sheets are the last. It is an object of the present invention to provide a paper sheet binder that can be easily flipped up and that does not come off during the flipping operation.

Another object of the present invention is to provide a paper sheet binder having a simple structure, a small number of parts, and easy assembly.

[0008]

In order to achieve the above-mentioned object, a paper binding device of the present invention has a rectangular base and one end rotatably supported at a corner of the base. A lever member extending parallel to one edge of the lever member, and one end fixed to the lever member for elastically biasing the free end of the lever member upward, and the other end of the lever member at one edge of the base of the lever member. Of the spring member extending on the base on the side surface opposite to the side surface of the lever member and attached to the other end of the spring member, and when the free end of the lever member is pressed downward, the elastic force of the spring member causes it to move toward the base Pressing means for elastically pressing the paper sheet to hold the corners of the sheet between it and the base, and locking means for locking the lever member so as to hold the state when the free end of the lever member is pressed downward. It consists of and.

In the base of the paper sheet binder of the present invention, a pair of protrusions are formed on both side surfaces of the lever member so as to extend so as to face these both side surfaces.

Further, the base of the paper sheet binder of the present invention is larger than the size of the paper sheet to be bound except the portion where the lever member is located.

The pressing means of the paper sheet binder of the present invention is made of a metal plate and has a substantially right triangle shape, and a part of the side facing the apex of the right angle is bent so as to form a groove on the upper surface thereof. And a pressing plate member having an engaged portion, and one end is inserted into the engaging portion of the pressing plate member, and the other end is fixed to the pressing plate member by bending a claw portion formed on the pressing plate member material. , And a fixed plate member that rotatably supports the other end of the spring member with the pressing plate member.

The pressing means of the paper sheet binder according to the present invention also includes
It is made of synthetic resin and has a substantially right triangle shape, and a groove into which the other end of the spring member is rotatably press fit is formed on the upper surface thereof.

The locking means of the paper sheet binder of the present invention engages the protrusion provided on the back surface of the lever member on the free end side and the protrusion when the lever member is pressed downward to raise the lever member. It is composed of a restricting engaging portion.

[0014]

With the structure described above, when the lever member whose free end is locked downward by the locking means is disengaged from the locking means, the free end of the lever member is rotated upward by the spring member. Also, the elastic pressing of the pressing means against the base is released. Here, the corner portion of the paper sheet is applied between the base and the pressing means, the free end of the lever member is pressed downward, and the lever member is locked by the locking means again. As a result, the pressing means elastically presses against the base, so that the corners of the paper sheet are firmly sandwiched between the pressing means and the base. Since the pressing means presses the corner of the paper sheet which is normally a blank part, it does not cover the items described on the paper sheet. In addition, since the narrow part of the corner of the paper sheet is held down, even if the paper sheet is bent from this part, the repulsive force of the paper sheet generated by bending is weak, and many sheets are bent from those corners. The overall repulsion does not increase even if it is opened. Therefore, even if a large number of paper sheets are clamped and they are turned over, they will not be disengaged from between the pressing means and the base, and can be reliably clamped.

By forming a pair of ridges on the base of this paper binding device, the lever member is prevented from swinging in a direction parallel to the base, and the projections located on the side of the pressing means are to be bound. It can act as a guide member for aligning the ends of the leaves.

Further, by making the base of the paper binding tool larger than the size of the paper to be bound, the paper can be held on the base, and thin paper can be surely bound. Since the base is a mount, it is possible to easily write on the bound sheets.

By configuring the pressing means of the paper sheet binder with a pressing plate member having an engaging portion and a fixed plate member that rotatably supports the other end of the spring member between the pressing plate member. , Simply inserting one end of the fixing plate member into the engaging portion of the holding plate member and bending the other end of the holding plate member member by bending the claw portion formed on the holding plate member material to fix the other end of the fixing plate member to the holding plate member. In the process, the pressing means can be supported on the other end of the spring member.

Further, the pressing means of the paper sheet binder is made of synthetic resin on the upper surface of which a groove into which the other end of the spring member can be press-fitted is formed, so that the other end of the spring member is simply press-fitted into this groove. The pressing means can be rotatably attached to the other end of the spring member by an extremely simple process.

Still further, the locking means of the paper sheet binder is constituted by the protrusion provided on the back surface of the lever member and the engaging portion provided on the base so that the free end of the lever member is lowered. When the lever is pressed, the protrusion engages with the engaging portion, and the free end of the lever member can be held in the lowered position, and when the free end of the lever member is desired to be raised, the free end of the lever member is further lowered. A simple operation of disengaging the protrusion and the engaging portion and slightly raising the protrusion so that the protrusion does not engage with the engaging portion is sufficient.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Throughout the embodiments, substantially the same constituent elements are designated by the same reference numerals, and a duplicate description will be omitted.

First, the first embodiment shown in FIGS. 1 to 7 will be described. This paper binder is made of synthetic resin,
A rectangular base 1 on which paper sheets to be bound are placed, a lever member 2 made of a metal plate whose one end is rotatably supported by the base 1, and a freeness of the lever member 2. A sheet of paper leaves between the metal spring member 3 for elastically biasing the end upward and the base 1 attached to one end of the metal spring member 3 and pressing the free end of the lever member 2 downward. It is mainly composed of a metal pressing means 4 for holding the corner portion and a synthetic resin cover member 5 fitted so as to cover the lever member 2.

The base 1 has an upper end 11, a lower end 12, and a left end 1.
It has a rectangular shape composed of three sides, 3 and a right end (not shown), a support part for the lever member 2 is provided on the left end 13 side, and a right part thereof is a flat part for placing paper sheets such as slips and memos. Has become. A pair of bearing protrusions 15 are integrally provided upright at the corners formed by the upper end 11 and the left end 13 of the base 1 at intervals in the left-right direction. A shaft hole 16 is formed in each of the bearing protrusions 15. The base 1 further has an upper end 11
From the pair of guide ridges 1 so as to extend from the lower end toward the lower end 12
7, 18 are erected integrally. The length of the gap between the guide protrusions 17 and 18 is at least the cover member 5.
It is preferable to set the height of the guide ridges 18 to be higher than the maximum thickness of the sheets to be bound. On the other hand, the height of the guide protrusion 17 is equal to that of the guide protrusion 1.
Although it is lower than 8, the height may be the same. Engaging portions 19 of locking means, which will be described later, are integrally erected on the guide ridges 17 and 18. The portion of the base 1 on the right side of the guide ridge 18 serves as a paper sheet stacking portion.

The lever member 2 includes a rectangular upper surface portion 21 and
The upper surface portion 21 has side surface portions 22 bent downward from both ends in the longitudinal direction, and the longitudinal length of the upper surface portion 21 is shorter than the upper and lower end lengths of the base 1. A pair of tab holders 2 are provided on the upper surface portion 21 at intervals in the longitudinal direction thereof.
3 are formed. The shaft hole 16 is provided at one end of each side surface portion 22.
Axial holes 24 aligned with are drilled respectively. A locking projection 25 for fixing one end of the metal spring member 3 to the lever member 2 is provided between the pair of tab holders 23 of the upper surface portion 21 so as to project downward. A locking projection 26 for locking means for locking the engaging portion 19 of the base 1 is formed at the end of the upper surface 21 facing the shaft hole 24 side, that is, the free end side. The free end of is shifted slightly laterally so as to be disengaged from the engaging portion 19.

The metal spring member 3 has a central coil portion 31.
And a linear locking end 32 that is locked to the locking projection 25 of the lever member 2 that is one end of the coil portion 31, and the other end of the coil portion 31 that rotates the pressing means 4. The holding end portion 33 holds freely, and the locking end portion 32 and the holding end portion 33 are elastically biased in opposite directions by the coil portion 31. The axial length of the coil portion 31 is slightly shorter than the length between the side surface portions 22 of the lever member 2. The holding end 33 is bent outward from its substantially middle portion at an angle of about 45 °. The metal spring member 3 has an axial length substantially equal to the length between the bearing protrusions 15 after the coil portion 31 is positioned between the bearing protrusions 15 so that its opening is aligned with the shaft hole 16 of the bearing protrusions 15. The supporting shaft 34 having a thickness is held in the base 1 by passing the supporting shaft 34 from the shaft hole 16 through the opening of the coil portion 31.

As shown in detail in FIGS. 3 to 7, the pressing means 4 is composed of a metal plate, and is a right-angled triangular holding plate member 41, and is fixed on the holding plate member 41.
The holding end portion 33 of the metal spring member 3 is formed by the holding plate member 41.
And a fixing plate member 42 for rotatably supporting the pressing plate member 41 and the pressing plate member 41 and the fixing plate member 42 are both made of a metal plate material. The holding plate member 41 is formed by inserting a groove 43 on the surface of the holding plate member 41 by bending a part of the side facing the apex portion of the right angle, and forming a pair on the side of the apex portion of the right angle facing the insertion groove 43. The claw portion 44 is formed by a notch. A positioning protrusion 45 protruding upward is formed between the pair of claw portions 44 by punching or the like. The fixed plate member 42 has a flat first hem portion 46 to be inserted into the insertion groove 43, a second hem portion 47 which is also flat and is pressed onto the surface of the pressing plate member 41 by the claw portion 44, and the first and the first hem portions. The insertion portion 4 which is located between the two hem portions 46 and 47 and has a substantially semicylindrical shape for passing the holding end portion 33 of the metal spring member 3.
8 are formed. The height of the insertion portion 48 is set to be larger than the wire diameter of the holding end portion 33 of the metal spring member 3, and a constricted portion 49 is formed at the center of the axial length so as to be depressed downward. As shown in FIG. 3, the constricted portion 49 has a step portion 3 formed on the holding end portion 33 of the metal spring member 3.
When the fixing plate member 42 is fixed to the pressing plate member 41 by positioning 4, the holding end portion 33 can be rotatably held without falling off from the insertion portion 48.
The second hem 47 has a positioning hole 50 into which the positioning protrusion 45 is inserted to determine the position of the fixed plate member 42.

The cover member 5 is made of a synthetic resin and covers the lever member 2 and the bearing projection 15 from above, and an upper plate portion 51 and a peripheral surface portion 52 extending downward from the outer periphery of the upper plate portion 51. And are integrally formed. Upper plate part 51
A tab 53 for inserting the tab receiver 23 of the lever member 2 and fixing the cover member 5 to the lever member 2 is provided on the lower surface of the so as to project downward.

Next, the assembly of this paper binding tool will be described. First, the holding means 4 is held by the holding end portion 33 of the metal spring member 3. This is because the pair of claw portions 44 provided on the holding plate member 41 of the holding means 4 are set up in advance as shown by dotted lines in FIGS. 3 and 7, and first, the fixing plate is inserted into the insertion groove 43 of the holding plate member 41. The first hem portion 46 of the member 42 is inserted. Next, the metal spring member 3 is inserted into the insertion portion 48 of the fixing plate member 42.
After the holding end portion 33 of the above is passed through, the positioning protrusion 4 is inserted into the positioning hole 50 with the stepped portion 34 positioned in the constricted portion 49, and the position of the fixing plate member 42 with respect to the pressing plate member 41 is fixed. Bending the claw portion 44 of the fixing plate member 4
The second hem portion 47 side of 2 may be fixed. After holding the pressing means 4 on the metal spring member 3 in this manner, the coil portion 31 of the metal spring member 3 and the end portion of the lever member 2 on the shaft hole 24 side are positioned between the bearing protrusions 15, and the coil portion is formed. After the opening of 31 and the shaft hole 16 of the bearing projection 15 are positioned so as to be aligned, the support shaft 34 is passed through the shaft hole 16 of one of the bearing projections 15. As a result, the lever member 2 and the metal spring member 3 are held on the base 1. Next, the locking end portion 32 of the metal spring member 3 is locked to the locking protrusion 25 of the lever member 2. Finally, the cover member 5 is fitted so as to cover the lever member 2 and the bearing protrusion 15 from above. As a result, the tab 53 of the cover member 5 is inserted into the tab receiver 23 of the lever member 2, and the both are firmly fixed. Thus, it can be assembled in a simple process.

When binding a paper sheet 6 (see FIG. 2) such as a slip to this paper sheet binder, the free end of the lever member 2 is pushed and slightly shifted laterally so that the locking projection 26 of the base 1 is pushed. Remove from the engaging portion 19. As a result, the free end side of the lever member 2 is raised by the metal spring member 3 and the pressing means 4 is also separated from the base 1. Here, the left end of the paper sheet 6 is aligned with the guide ridge 18, and the holding plate member 41 is positioned so as to press the corner portion of the paper sheet 6 when the holding means 4 descends. Then, the free end of the lever member 2 is lowered, the locking projection 26 of the lever member 2 is engaged with the engaging portion 19 of the base 1, and the free end of the lever member 2 is held in the lowered state. As a result, the pressing means 4 elastically presses against the base 1,
The corners of the paper sheet 6 are tightly clamped between the pressing means 4 and the base 1. Since the corners of the paper sheet 6, which are normally blank, are pressed, the pressing means 4 does not cover the items on the paper sheet 6. The holding plate member 41 of the holding means 4 is a sheet 6
Since it abuts on a narrow portion of the corners of the sheet, even if the sheet 6 is bent from this portion, the repulsive force of the sheet 6 generated by the bending is weak, and a large number of sheets 6 are opened to bend from those corners. However, the overall repulsive force does not increase. Therefore, even if a large number of sheets 6 are sandwiched and they are turned over, they will not be disengaged from between the holding plate member 41 and the base 1, and can be reliably sandwiched.

Next, a second embodiment shown in FIGS. 8 to 11 will be described. In the second embodiment, the pressing means 4 is made of synthetic resin, and the pair of guide projections 17 and 18 also serve as the bearing projections which are separately provided in the first embodiment. That is, the holding means 4 is composed of a holding plate member 61 having a substantially right triangle, and the holding end portion 3 of the metal spring member 3 is provided on the upper surface thereof, as shown in detail in FIG.
3 and a stopper projection 63 for restricting movement of the end of the holding end 33.
And are formed. The tip of the holding end 33 has a groove projection 62.
A stopper 64, which is a flat portion having a width longer than the groove width, is formed. The stopper 64 prevents the holding end 33 from slipping out of the groove protrusion 62 even in the direction opposite to the stopper protrusion 63. The stopper 64 also raises the free end of the lever member 2 as shown in FIG.
When 1 is released, the stopper 64 prevents the stopper 64 from contacting the inclined surfaces 65 and 66 of the pressing plate member 61 and inclining more than necessary. As a result, as shown in FIG. 9, even if the free end of the lever member 2 is raised, the upper side of the pressing plate member 61 is lowered and the sheet can be easily inserted.

Further, in the second embodiment, only the lever member 2 is provided and the cover member 5 is omitted. The lever member 2 has an upper surface portion 67 and a side surface portion 68 that is bent downward from one side portion of the upper surface portion 67 and faces the guide ridge 17. The engaging portion 1 is provided on the inner surface of the guide ridge 17.
9 is provided, and the engaging portion 19 is engaged with the engaging hole 69 formed in the side surface portion 68 of the lever member 2,
The free end of the lever member 2 is held in the lowered state. To release the engagement, in FIGS. 8 and 9, the free end of the lever member 2 may be slightly shifted to the right to disengage the engagement portion 19 from the engagement hole 69. The guide ridge 18 is formed with a recess 70 through which the holding end 33 of the metal spring member 3 is inserted, and the tip ends of the guide ridges 17 and 18 support the support shaft 34. The portion of the base 1 located on the right side of the guide protrusion 18 is shorter than that of the first embodiment, and the guide protrusion 71 that protrudes upward at the upper end of the base 1 and guides the upper side of the paper sheet.
Are integrally formed. 72 of the base 1 is a screw hole.

As shown in FIG. 12, the paper sheet binder of the second embodiment has a front cover 72, a back cover 73, and a back cover 74.
It is attached to the file 75 consisting of. That is,
The back cover 73 is fixed to the back cover 74 with screws (not shown) from the screw holes 72 of the base 1 so that the guide protrusions 17 of the base 1 are located on the left shoulder portion along the boundary with the back cover 74. Alternatively, it is fixed by adhering the back surface of the base 1 to the spine cover 74. As a result, as described above, not the relatively small paper sheets such as slips, but also the paper sheets 80 such as documents and materials having a size of B5 or A4 or more can hold the corners, which are the blank portions, and thus can be turned over. It is possible to provide a binder that is easy and does not return even when the paper leaf is turned off.

In the first and second embodiments described above, the base 1 is made of synthetic resin, but in the third embodiment shown in FIG. 13, the base 1 is made of a metal plate material and The lever member 2 is lengthened and the lever member 2 is lightly pressed.
It shows the case where can be lowered. That is, the guide protrusion 17 is configured by bending the left end edge portion of the base 1 in FIG. 13, and the guide protrusion 71 is configured by bending the upper end edge portion of the base 1. As a member corresponding to the guide ridges 18 located on the opposite side of the lever member 2 of the base 1, three guide protrusions 76 are formed by notching the base 1 at predetermined intervals and raising them. ing. The support shaft 34 that supports the lever member 2 and the metal spring member 3 is. One end thereof is supported by the guide protrusion 17, and the other end thereof is supported by the bearing protrusion 77 which is formed by notching the base 1 and rising in the same manner as the guide protrusion 76. Since the lever member 2 can be lowered with a light force, the metal spring member 3 having high elasticity can be used,
As a result, the pressing means 4 can exert a strong pressing force, and by binding more sheets than in the case of the first and second embodiments, or by attaching this sheet binding tool to the binder, It is possible to provide a binder that can bind even such large paper sheets.

When the paper binder is attached to a binder made of a flexible material, the length of the lever member 2 needs to be shorter than the length of the base 1 located below the lever member 2. This is because if the lever member 2 is longer than the base, when the force is applied to the free end of the lever member 2 to lower it, the support shaft 34 side rises and the binder may break from the lower end 12 of the base. Is.

In each of the above-described embodiments, the lever member 2 is provided at the left end of the base 1 and the pressing means 4 is located on the right side of the lever member 2. However, when binding sheets to the right, the base 1 is used. The lever member 2 may be provided at the right end, and the pressing means 4 may be positioned on the left side of the lever member 2.

[0035]

As described above, a rectangular base, one end of which is rotatably supported at a corner of the base, and a lever member which extends parallel to one edge of the base, One end is fixed to the lever member in order to elastically bias the free end of the lever member upward, and the other end extends on the side surface base opposite to the one side of the base of the lever member. The spring member is attached to the other end of the spring member, and when the free end of the lever member is pressed downward, the elastic force of the spring member elastically presses in the direction of the base and the corner of the paper sheet between the base and the base. 2. The paper sheet binder according to claim 1, comprising a holding means for holding the portion, and a locking means for locking the lever member so as to maintain the state when the free end of the lever member is pressed downward. According to this, the lever member whose free end is locked downward by the locking means is removed from the locking means. When, the free end of the lever member is rotated upward by a spring member, it is also released elastic pressure on the base by the pressing means. If the corner portion of the paper sheet is applied between the base and the pressing means, and the free end of the lever member is pressed downward and the lever member is again locked to the locking means, the pressing means is fixed to the base. It is elastically pressed, and the corners of the paper sheet are firmly clamped between the pressing means and the base. Further, since the pressing means abuts on the narrow portion of the paper sheet corner, even if the paper sheet is bent from this portion, the repulsive force of the paper sheet generated by the folding is weak, and a large number of paper sheets are cut from those corners. Even if it is opened like bending, the total repulsive force does not increase. Therefore, even if a large number of paper sheets are sandwiched and turned over, they will not come off between the holding means and the base,
It can be securely clamped. Furthermore, the corner of the paper sheet is usually a blank part, and since this part is pressed by the holding means,
The entire description on the paper sheet can be viewed without being disturbed by the holding means.

The sheet binding device according to claim 2, wherein the base of the sheet binding device is formed with a pair of ridges extending on both side faces of the lever member so as to face the both side faces. According to this, the lever member can be prevented from swinging in the direction parallel to the base, and the projection located on the side of the holding means can act as a guide member that aligns the ends of the sheets to be bound.

Further, according to the paper sheet binder of claim 3, the size of the base of the paper sheet binder is larger than the size of the paper sheet to be bound except the portion where the lever member is located. The paper sheets can be held on the upper side, thin paper sheets can be surely bound, and since the base becomes the mount, it is possible to easily write on the bound paper sheets.

Furthermore, the holding means of the paper sheet binder is made of a metal plate and has a substantially right-angled triangle, and a part of the side facing the apex of the right angle is bent to form a groove on the upper surface thereof. And a pressing plate member having an engaged portion, and one end is inserted into the engaging portion of the pressing plate member, and the other end is fixed to the pressing plate member by bending a claw portion formed on the pressing plate member material. The sheet binding device according to claim 4, wherein the fixing plate member rotatably supports the other end of the spring member between the pressing plate member and one end of the fixing plate member. The pressing means is inserted into the engaging part of the member, the other end is bent to bend the claw portion formed on the pressing plate member material, and the other end of the fixing plate member is fixed to the pressing plate member, and the pressing means is replaced by the spring member. Can be supported on the edge.

The pressing means of the paper sheet binder is made of synthetic resin and is formed into a substantially right triangle, and a groove into which the other end of the spring member is rotatably press fit is formed on the upper surface thereof. According to the paper sheet binder, the pressing means can be rotatably attached to the other end of the spring member by a very simple process of pressing the other end of the spring member into the groove.

Then, the locking means of the paper sheet binder is engaged with the projection provided on the back surface of the free end side of the lever member and the projection when the lever member is pressed downward to restrict the rise of the lever member. According to the paper sheet binder of claim 6, which comprises an engaging portion, the protrusion engages with the engaging portion when the free end of the lever member is pressed downward, and the free end of the lever member descends. When the free end of the lever member is desired to be raised, the free end of the lever member can be further lowered to disengage the engagement between the protrusion and the engaging portion so that the protrusion does not engage with the engaging portion. Then, a simple operation of just raising it while slightly shifting it is sufficient.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing an exploded first embodiment of a paper sheet binder of the present invention.

FIG. 2 is a partial perspective view showing an assembled state of the first embodiment.

FIG. 3 is a perspective view showing a holding means portion in a disassembled and enlarged manner.

FIG. 4 is an enlarged perspective view showing an assembled state of the pressing means.

FIG. 5 is an enlarged plan view showing the holding means.

FIG. 6 is an enlarged side view showing a part of the holding means by cutting.

7 is a vertical cross-sectional view taken along the line AA of FIG.

FIG. 8 is a perspective view showing a second embodiment of the present invention.

FIG. 9 is a perspective view showing the second embodiment in a state where a handle is erected.

FIG. 10 is an exploded perspective view showing a holding means portion in the second embodiment.

FIG. 11 is a cross-sectional view showing a rotating state of the pressing means.

FIG. 12 is a perspective view showing a state in which the second embodiment is attached to a binder.

FIG. 13 is a perspective view showing a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Lever member 3 Metal spring member 4 Holding means 5 Cover member 15 Bearing protrusion 17, 18, 71 Guide protrusion 19 Engagement part 25, 26 Engagement protrusion 32 Engagement end part 33 Holding end part 34 Spindle 41 , 61 Holding plate member 42 Fixed plate member 43 Insertion groove 44 Claw portion 45 Positioning protrusion 46 First hem portion 47 Second hem portion 48 Insertion portion 49 Constricted portion 50 Positioning hole 62 Groove protrusion 63 Stopper protrusion 75 Binder 76 Guide protrusion

Claims (6)

[Claims] 1. A rectangular base, a lever member having one end rotatably supported by a corner of the base and extending parallel to one edge of the base, and a free end of the lever member. One end is fixed to the lever member in order to elastically bias the above,
The other end is a spring member extending on the side of the lever on the side opposite to the one side of the base of the lever, and the other end of the spring is attached to the free end of the lever member. When the end is pressed downward, the elastic force of the spring member elastically presses in the direction of the base to hold the corner of the paper sheet between the base and the free end of the lever member. And a locking means for locking the lever member so as to hold the state when pressed downward. 2. The base is formed with a pair of protrusions extending on both side surfaces of the lever member so as to face the both side surfaces of the lever member. Paper binding tool. 3. The paper binding according to claim 1, wherein the base is larger than the size of the paper sheet to be bound except the portion where the lever member is located. Ingredient 4. The holding means is made of a metal plate and has a substantially right-angled triangle shape, and a part of the side facing the apex of the right angle has an engaging portion bent to form a groove on the upper surface thereof. A holding plate member provided with one end is inserted into an engaging portion of the holding plate member, and the other end is fixed to the holding plate member by bending a claw portion formed on the holding plate member. And a fixed plate member that rotatably supports the other end of the spring member between and. 5. The holding means is made of synthetic resin and has a substantially right triangle shape, and a groove into which the other end of the spring member is rotatably press fit is formed on the upper surface thereof. Item 2. The paper sheet binder according to item 1. 6. The locking means engages with a protrusion provided on the rear surface of the lever member on the free end side thereof, and engages with the protrusion when the lever member is pressed downward to regulate the rise of the lever member. 2. The paper sheet binder according to claim 1, wherein the paper sheet binder is configured with an engaging portion.