JP2015112700A - Paper needle for stapler, and stapler using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure a holding force at the time of binding a paper bundle and reduce costs.SOLUTION: A paper needle for a stapler comprises: a male foot part 20a which is provided at one end side of a long plate-like body folded into a U shape, has a slender tip part 20a1 at the tip, and is inserted into one of slender holes 60a of a paper bundle 60; a female foot part 20b which is provided at the other end side of the body, in which a first small hole 20b1 into which the slender tip part can be inserted is formed, and which is inserted to the other slender hole 60a of the paper bundle; and a shoulder part 20c which is provided between the male foot part and the female foot part in the body, and in which a second small hole 20c1 into which the slender tip part can be inserted is formed. A third small hole 60c into which the slender tip part of the male foot part can be inserted is drilled between the pair of slender holes of the paper bundle. The female foot part and the male foot part are folded in order on the paper bundle, and the slender tip part is inserted into the first hole, the third hole, and the second hole thereby binding the paper bundle.

Description

  The present invention relates to a paper needle for a stapler that binds a plurality of papers (paper bundles) together, and a stapler using the same.

Conventionally, staplers used for binding paper bundles are those that fix a plurality of papers by piercing a thin U-shaped metal needle from the paper surface and bending the legs protruding from the back side paper inward. It is.
However, since the conventional needle is made of metal, it is necessary to remove the metal needle when separating the paper and the metal needle for recycling paper that is no longer needed, or when the paper is shredded. There is a problem that the work becomes complicated.

In response to the above problem, Patent Document 1 discloses a stapler configured to bind a document with a needle (paper needle) made of paper.
FIG. 9 shows a perspective view of the stapler disclosed in Patent Document 1, and FIGS. 10A to 10E show a front view (partial cross section) for explaining the operation of the stapler.
In the stapler 50 shown in FIG. 9, paper needles are used instead of conventional metal needles. That is, as shown in FIG. 10A, the paper needle 200 has a plate-like main body portion 201 extending left and right, and leg portions 202 and 203 bent downward substantially at right angles from both ends thereof. In addition, a heat-soluble adhesive is applied to the inner side surfaces of the leg portions 202 and 203 of the paper needle 200.

As shown in FIG. 9, the stapler 50 is provided above a magazine 51 that stores a plurality of paper needles 200 that are continuously connected, and is provided so as to be rotatable about the rear end portion of the magazine 51. In addition, an upper lever 54 and a base 55 disposed below the magazine 51 are provided.
Further, a push plate 53 is provided at the tip of the upper lever 54 so as to protrude downward and push the paper needle 200 downward. A pair of holes for making a hole in the document 150 (paper bundle) is provided on the left and right sides thereof. Cutters 56 and 57 are fixed, and the blade on the lower end side protrudes below the magazine 51. That is, as the upper lever 54 rotates, the push plate 53 and the cutters 56 and 57 move up and down.

The base 55 is provided with a receiving table 58 at a position corresponding to the push plate 53 and the cutters 56 and 57 so that the lower end of the push plate 53 comes into contact with the upper lever 54 when pushed downward. It has become.
Further, as shown in FIGS. 10A to 10E, the tips of the cutters 56 and 57 protrude inward, and the tips of the legs 202 and 203 of the paper needle 200 are positioned thereon. Therefore, when the cutters 56 and 57 are punched and inserted into the document 150, the leg portions 202 and 203 of the paper needle 200 are continuously inserted into the holes.

When binding a document composed of a plurality of sheets by the stapler 50, the document 150 is disposed between the upper lever 54 and the base 55 as shown in FIG. 10A, and the upper lever 54 is pushed down with respect to the base 55. .
As a result, the cutters 56 and 57 open the hole 150a in the document 150 as shown in FIG. 10 (b), and the paper needle 200 guided by the cutters 56 and 57 in the hole as shown in FIG. 10 (c). Legs 201 and 202 are inserted.

  As shown in FIG. 10D, the paper needle 200 is sandwiched between the push plate 53 and the cradle 58, whereby the leg portions 201 and 202 are bent, and the heat of the electric heater in the cradle 58 is passed through the through small holes. Conductive to the adhesive is dissolved, and the document is bound by the paper needle 200 having an increased adhesive force as shown in FIG.

JP 2002-168216 A

Incidentally, in the stapler 50 disclosed in Patent Document 1, the leg portions 201 and 202 of the paper needle 200 inserted through the hole 150a of the document 150 are bent inward, and the leg portions 201 and 202 are adhered to the paper surface of the document. This is a configuration for binding documents.
However, in the configuration in which the leg portions 201 and 202 of the paper needle 200 protruding from the back side of the paper surface are folded inward and adhered to the paper surface and bound, when the number of documents to be bound increases, There was a problem that the area of the bent portion, that is, the portion bonded to the paper surface was reduced, and the holding force (strength) was significantly reduced.

Further, in the stapler 50, since the legs 201 and 202 of the paper needle 200 are bonded by a heat-soluble adhesive, the adhesive dissolves again when placed in a high-temperature environment after bonding. There is a possibility that the legs 201 and 202 of the needle 200 may be peeled off from the paper surface.
Further, the stapler 50 needs to include an electric heater, a power source thereof, and the like, and there is a problem that the cost and maintenance cost for the apparatus are bulky.

  The present invention has been made paying attention to the above-described points, and can secure a holding force when binding a bundle of paper, and can reduce the cost of the stapler, and The purpose is to provide a stapler that uses it.

In order to solve the above-described problem, a paper needle for a stapler according to the present invention is used by being inserted into a pair of elongated holes penetrating a paper bundle, and binding the paper bundle, A male foot portion provided at one end of a long plate-like body bent in a U-shape, having a narrowed tip at the tip and inserted into one elongated hole of the paper bundle, and the other end of the main body A female foot portion that is inserted into the other elongated hole of the paper bundle and has a male foot portion and a female foot in the main body. Between the pair of elongated holes of the paper bundle, and a narrow portion of the male foot portion. A third small hole into which the tip portion can be inserted is drilled, and the female foot portion and the male foot portion are sequentially folded on the paper bundle. Characterized in that bind the paper stack the Hososaki portion is interleaved in said second hole and said third hole and the first hole.
According to the paper needle configured in this way, not only is the paper needle leg inserted into the paper surface to bend, but also the second small hole in the shoulder located on the lower surface side of the paper bundle and the paper bundle. The narrow end portion of the male foot portion is inserted into the formed third small hole and the first small hole of the female foot portion located on the upper surface side of the paper bundle, thereby lowering the paper bundle from the upper surface side to the lower surface. It will be in the state connected substantially to the side.
That is, according to the paper needle according to the present invention, it is possible to bind the paper bundle firmly without using an adhesive for the paper needle. Can be reduced.
In addition, even when the number of sheets to be bound increases, the holding force (strength) at the time of binding can be maintained since the upper surface side to the lower surface side of the paper bundle can be connected by the narrow tip as described above. can do.

In order to solve the above-described problems, a stapler according to the present invention includes a needle that bends a long plate-like paper needle into a U shape to form the male foot, the female foot, and the shoulder. A forming portion, a pair of elongated holes formed in the paper bundle, a perforated portion formed by drilling a third small hole between the pair of elongated holes, and a pair of elongated holes formed in the paper bundle. The needle insertion portion for inserting the male foot portion and the female foot portion of the paper needle, respectively, and the female foot portion and the male foot portion inserted into the pair of elongated holes of the paper bundle are sequentially folded and overlapped, The second small hole of the paper needle, the third small hole of the paper bundle, and the first small hole of the paper needle are aligned, and the first small hole, the third small hole, and the second small hole are aligned. It is characterized by comprising a binding portion for inserting the narrow end portion of the male foot portion into the small hole.
According to the stapler configured in this manner, the second small hole in the shoulder portion located on the lower surface side of the paper bundle is used not only to bend the paper needle through the paper surface, but also to bend the paper needle. And the third small hole of the paper bundle and the first small hole of the female foot part located on the upper surface side of the paper bundle, the narrow end portion of the male foot part is inserted into the lower surface from the upper surface side of the paper bundle. Can be connected up to the side.

  According to the present invention, it is possible to secure a holding force when binding a bundle of paper, and to reduce the cost.

FIGS. 1A and 1B are perspective views of a paper needle for a stapler according to the present invention. 2 (a) and 2 (b) are perspective views showing how the paper needle of FIG. 1 is used. FIG. 3 is a perspective view of the stapler according to the present invention. FIGS. 4A to 4E are schematic cross-sectional views of the needle forming unit as viewed from the front side, and are diagrams showing each operation state of the needle forming unit. FIG. 5 is a perspective view showing a part of the perforated part. FIGS. 6A to 6E are schematic side views of the perforated portion as viewed from the left side of the stapler, and are diagrams showing each operation state of the perforated portion. FIGS. 7A to 7C are side views schematically showing the structure of the needle insertion portion, and are diagrams showing each operation state of the needle insertion portion. FIGS. 8A to 8E are front views (partially cross-sectional views) schematically showing the configuration of the binding portion, and are diagrams showing each operation state of the binding portion. FIG. 9 is a perspective view of a stapler using a conventional paper needle. FIGS. 10A to 10E are front views of the stapler of FIG. 9 and showing each operation state.

Embodiments of a staple for a stapler according to the present invention and a stapler using the same will be described below with reference to the drawings. FIGS. 1A and 1B are perspective views of a paper needle for a stapler according to the present invention, and FIGS. 2A and 2B are perspective views showing usage forms of the paper needle.
A paper needle 20 shown in FIG. 1A is a long plate-like needle made of thick paper having a predetermined thickness in a state before use. As shown, the paper needle 20 is divided into three areas in the longitudinal direction.
Specifically, the paper needle 20 includes a male foot portion 20a provided on one end side of the paper needle body, a female foot portion 20b provided on the other end side, and a shoulder portion 20c provided therebetween. Consists of. As shown in the figure, the male foot portion 20a has a narrowed tip portion 20a1, and the female foot portion 20b and the shoulder portion 20c have a circular small hole 20b1 (first small hole) at a substantially central position. And a small hole 20c1 (second small hole).

When used, the paper needle 20 is U-shaped so that the male foot 20a and the female foot 20b are substantially perpendicular to the shoulder 20c, as shown in FIG. 1 (b). Are inserted into a pair of elongated holes formed in a paper bundle to be bound.
More specifically, as shown in FIG. 2 (a), an elongated hole 60a into which the male foot 20a of the paper needle 20 can be inserted and a female foot 20b can be inserted into the document 60 which is a paper bundle. A narrow slot 60b and a small hole 60c (third small hole), which is located between the elongated holes 60a and 60b and into which the narrow tip 20a1 of the paper needle 20 can be inserted, are formed.

Then, as shown in the drawing, the male foot portion 20a and the female foot portion 20b of the paper needle 20 are inserted into the elongated holes 60a and 60b from the lower surface side of the document 60, respectively, and protrude upward on the upper surface side of the document 60. State. At this time, the position of the small hole 60c of the document 60 and the position of the small hole 20c1 of the paper needle 20 are aligned.
Further, as shown in FIG. 2 (b), the female foot 20b is first folded inward, and the male foot 20a is folded inward from above with the small holes 20b1 and 60c aligned. The document 60 is bound by inserting the narrow end portion 20a1 into the three small holes 20b1, 60c, and 20c1 that are vertically overlapped.

As described above, in the paper needle 20 according to the present invention, not only the paper needle 20 is inserted into the paper surface but bent, the small hole 20c1 of the shoulder portion 20c located on the lower surface side of the document 60, The narrow edge portion 20a1 of the male foot portion 20a is inserted into the small hole 60c of the document 60 and the small hole 20b1 of the female foot portion 20b located on the upper surface side of the document 60, whereby the lower surface side from the upper surface side of the document 60. Are substantially connected.
That is, according to the paper needle of the present invention, it is possible to bind the paper bundle firmly without using an adhesive for the paper needle.
In addition, even when the number of documents to be bound increases, the upper end side to the lower surface side of the document 60 can be connected by the narrow end portion 20a1 as described above, so that the holding force (strength) when binding is maintained. Can do.
It should be noted that the small hole 20b1 provided in the female foot portion 20b of the paper needle 20 is preferably formed in an oval shape extending along the longitudinal direction of the paper needle 20 so that the number of documents can be increased. Thereby, when the paper needle 20 is folded, the small hole 20b1, the small hole 60c, and the small hole 20b1 can be in a state of communicating in the thickness direction. In addition, the length of the narrow end portion 20a1 provided on the male foot portion 20a may be long in advance so as to have at least the length corresponding to the thickness of the document.

Next, the configuration of the stapler having the function of binding the document 60 using the paper needle 20 as described above will be described with reference to FIG. FIG. 3 is a perspective view of the stapler according to the present invention.
In the following description, the x direction shown in FIG. 3 is the left-right direction, the y positive direction is the front side, and the y negative direction is the rear side.
The stapler 1 shown in the figure includes a needle forming portion 2 for bending the paper needle 20 into a U shape and forming it into the form shown in FIG. 1B, and the pair of elongated holes 60a, 50b in the document 60. And a perforated portion 3 for forming the small hole 60c.
Further, the needle insertion portion 4 for inserting the male foot portion 20a and the female foot portion 20b of the paper needle 20 into the elongated holes 60a and 60b of the document 60 from the lower side as shown in FIG. 2), a binding portion 5 for folding and binding the female foot portion 20b and the male foot portion 20a as shown in FIG. 2B is provided.

Next, the configuration of each unit will be described in order.
First, as shown in FIG. 3, the needle forming unit 2 includes a rail base 11 extending in the front-rear direction (y direction), and a pair of side blocks 12 and 13 provided symmetrically on the rail base 11. The front block 14 and the rear block 15 are disposed between the side blocks 12 and 13 at a predetermined interval in the front-rear direction. On the rail base 11, a substantially rectangular parallelepiped space surrounded by the side blocks 12, 13, the front block 14, and the rear block 15 is used as the needle forming hole 6.
Further, the needle forming unit 2 places a straight plate-shaped paper needle 20 (see FIG. 1A) placed on the needle forming hole 6 so as to straddle the needle forming hole 6 from above into the hole. It has a square bar-like push bar 8 for pushing in, and a first lever handle 9 for moving the push bar 8 up and down. On the distal end side of the push-in rod 8, claw portions 8a and 8b projecting downward are formed at both left and right ends.

The operation of the needle forming unit 2 will be described with reference to FIG. 4A to 4E are schematic cross-sectional views of the needle forming unit 2 as viewed from the front side, and show the respective operation states of the needle forming unit 2. FIG.
First, as shown in FIG. 4A, the paper needle 20 is placed on the needle forming hole 6 in a state where the push bar 8 is disposed upward. At this time, for example, when viewed from the front side, the male foot portion 20a of the plate-shaped paper needle 20 is disposed on the right side block 13, and the female foot portion 20b is disposed on the left side block 14. As a result, the needle forming hole 6 is covered with the shoulder 20c of the paper needle 20.

Next, when the lever handle 9 shown in FIG. 1 is pushed down, the push bar 8 starts to descend as shown in FIG. 4B.
When the claw portions 8a and 8b at the tip of the push bar 8 abut against the paper needle 20 and the push bar 8 is further pushed down, the paper needle 20 is brought into contact with the claw portions 8a and 8b as shown in FIG. It is inserted into the needle forming hole 6 while being bent from the contact portion (that is, the boundary between the male foot 20a and the shoulder 20c, the boundary between the female foot 20b and the shoulder 20c).
4D, when the shoulder 20c of the paper needle 20 bent into a U-shape reaches the bottom (rail base 11) of the needle forming hole 6, the bent portion of the paper needle 20 is pushed into the push rod 8. The claw portions 8a and 8b are embossed to form U-shaped corners.
Further, when the lever handle 9 is operated from the state of FIG. 4D to raise the push-in bar 8, a U-shaped paper needle 20 is formed in the needle forming hole 6 as shown in FIG. 4E.

Next, the perforated part 3 will be described with reference to FIGS. FIG. 5 is a perspective view showing a part of the perforated part 3. FIGS. 6A to 6E are schematic side views of the punched portion 3 as viewed from the left side of the stapler 1, and show respective operation states of the punched portion 3.
As shown in FIG. 5, the perforated part 3 is provided on the rear side of the pusher bar 8 of the needle forming part 2, and plate cutters 22 a and 22 b provided in parallel with a pair of left and right having an oblique blade on the lower end side; A cylindrical cutter 22c is provided between the pair of cutters 22a and 22b and has a circular blade at the lower end.
The plate-like cutters 22a and 22b and the cylindrical cutter 22c are configured to be movable up and down by operating the second lever 16 shown in FIG. The second lever 16 is urged by a spring 19 in the direction in which the cutters 22a, 22b, 22c are raised.
Further, as shown in FIG. 5, on the upper surface side of the rear block 15, the plate-like cutters 22 a and 22 b and the cylindrical cutter 22 c have shapes corresponding to the holes 17 a and 17 b through which the tip portions of the cutters can be inserted. 17c is provided.

When the holes 60a, 60b, and 60c are opened in the document 60 by the punching portion 3, the document 60 is first placed so that the front end side of the document 60 covers the front upper surface of the rear block 15 as shown in FIG. To do.
When the document 60 is placed, the second lever 16 is pushed down to lower the plate cutters 22a and 22b and the cylindrical cutter 22c. As a result, as shown in FIG. 6B, the tips of the cutters 22a, 22b, and 22c perforate the document 60, and when the cutters 22a, 22b, and 22c are pulled up as shown in FIG. 6C, the elongated holes 60a, 60b and a small hole 60c are formed.

When the elongated holes 60 a and 60 b are formed in the document 60, the front block 14 and the rear block 15 are placed on the rail member 11 by the needle insertion portion 4 as shown in FIGS. 6C and 6D. , The paper needle 20 in the needle forming hole 6 is disposed immediately below the holes 60a, 60b, 60c of the document 60. Further, a push-up block 21 that can move up and down in the needle forming hole 6 is disposed at the bottom of the needle forming hole 6 by the movement of the blocks 14 and 15.
Next, as shown in FIG. 6 (e), the push-up block 21 is raised, and the paper needle 20 is pushed up in the needle forming hole 6, whereby the male foot portion 20 a and the female foot portion 20 b are moved into the elongated holes of the document 60. 60a and 60b are respectively inserted from below.

The mechanism of the needle insertion portion 4 can be realized by a mechanism as shown in FIG. FIGS. 7A to 7C are side views schematically showing the structure of the needle insertion portion 4, and show the operation state in time series.
As shown in FIGS. 7A to 7C, the push-up block 21 is supported by a support member 23, which is supported by a spring 24 that expands and contracts in the vertical direction and biases upward. . The spring 24 is brought into an upright state by a spring cradle 25.

A support shaft 26 is provided on the rear end side (left side in the drawing) of the rear block 15, and the rear end portion of the third lever 22 is rotatably connected to the support shaft 26. Further, the distal end side of the third lever 22 is placed on the support member 23 (separably).
Further, a spring support 27 is provided behind the rear block 15, and a spring 28 that can extend and contract substantially horizontally is provided between the spring support 27 and the rear block 15. The rear block 15 is biased forward (right side of the drawing) by the spring 28.

In such a configuration, first, as shown in FIG. 7A, the upper end of the push-up block 21 is in contact with the lower surface of the rear block 15 in a state where the paper needle 20 is accommodated in the needle forming hole 6. The spring 24 under 21 is compressed. Further, the spring 28 on the front end side of the rear block 15 is in a substantially extended state.
From this state, when the third lever 22 is pushed rearward (left side in the drawing) as shown in FIG. 7B, a rearward external force is transmitted to the rear block 15 via the support shaft 26, and the front block 14, 15 and the paper needle 20 in the needle forming hole 6 move backward on the rail member 11 in conjunction with each other. The spring 28 is compressed by the rear block 15.
7C, when the bottom surface of the needle forming hole 6 is switched from the top surface of the rail member 11 to the top surface of the push-up block 21 by the movement of the rail member 11, the spring 24 is extended, The push-up block 21 is inserted into the needle forming hole 6 from below, and the paper needle 20 is pushed up.

When the paper needle 20 is pushed up in this way and the male foot portion 20a and the female foot portion 20b of the paper needle 20 are inserted from the lower surface side to the upper surface side of the document 60 as shown in FIG. 5, the process of binding the paper needle 20 is performed.
FIGS. 8A to 8E are front views (partially cross-sectional views) schematically showing the configuration of the binding portion 5 and showing each operation state.
The binding unit 5 includes a fourth lever 18 (see FIG. 3) and a first link member 32 that can be rotated about the support shaft 31 by the fourth lever 18. A thin rod-like pin 33 is provided on the first link member 32, and when the first link member 32 is rotated, a tip 21 of the pin 33 is provided in the center of the upper surface of the push-up block 21 ( (See FIG. 8).

In addition, one end of a second link member 34 is rotatably connected to the first link member 32, and the other end of the second link member 34 supports the rear end side of a flat plate-like first hand portion 35 that is long in the horizontal direction. A supporting member 36 that is pivotably connected.
Further, the first hand portion 35 supported by the support member 36 is movable in the horizontal direction along the guide member 37 whose position is fixed, and the front end side thereof is allowed to advance and retreat to a position directly above the push-up block 21. Yes.

Further, a flat plate-like second hand portion 38 that is long in the horizontal direction is provided so as to oppose the first hand portion 35 with the paper needle 20 on the push-up block 21 interposed therebetween. The second hand portion 38 is movable in the horizontal direction along the rail 40 a of the side rail member 40 disposed above the side block 12, and its distal end side is movable forward and backward to a position directly above the push-up block 21. Yes.
Further, the rear end side of the second hand portion 38 is supported by a block-like support member 39, and a spring 41 is provided between the support member 39 and the side rail member 40, and the support member 39 (second hand portion). 38) is pushed in a direction away from the push-up block 21.

  The support shaft 31 of the fourth lever 18 and the support member 39 that supports the second hand portion 38 are connected by a link mechanism (not shown). When the first hand portion 35 is advanced to a position immediately above the push-up block 21 by the operation of the fourth lever 18, the front end side of the second hand portion 38 is also advanced to a position directly above the push-up block 21 in conjunction with the first hand portion 35. The second hand portion 38 is configured to be retracted by the biasing force of the spring 41 immediately before the hand portion 35 is most advanced.

Specifically, the binding operation will be described with reference to FIG. 8A from the state where the male foot portion 20a and the female foot portion 20b of the paper needle 20 are inserted into the elongated holes 60a and 60b of the document 60, as shown in FIG. As shown in (b), the fourth lever 18 is operated to rotate the first link member 32 (counterclockwise as viewed from the front).
As a result, as shown in FIG. 8B, the first hand portion 35 and the second hand portion 38 move forward toward the paper needle 20, and the tip of the second hand portion 38 is first outward from the female foot portion 20b. Abut and push inward.

When the first link member 32 is further rotated, as shown in FIG. 8C, the tip of the first hand portion 35 comes into contact with the male foot portion 20a from the outside and is pushed down inside. That is, the male foot 20a is overlaid on the female foot 20b folded inward.
Then, the second hand portion 38 is retracted immediately before the first link member 32 is completely rotated, and when the first link member 32 is completely rotated, the pin 33 provided on the first link member 32 is male. The document 60 is connected and bound by inserting into the small holes 20b1, 60c, and 20c1 which are in contact with the narrow end portion 20a1 of the foot portion 20a and vertically overlapping the narrow end portion 20a1.

  As described above, according to the stapler 1 according to the present invention, the paper needle 20 is used and the foot portion of the paper needle 20 is inserted into the paper surface and bent, and the shoulder portion located on the lower surface side of the document 60 is also provided. The narrow end 20a1 of the male foot 20a is inserted into the small hole 20c1 of the 20c, the small hole 60c of the document 60, and the small hole 20b1 of the female foot 20b located on the upper surface side of the document 60. It is possible to connect from the upper surface side to the lower surface side.

  Note that the configuration of the stapler 1 for binding the paper needle 20 according to the present invention is not limited to the configuration shown in the above-described embodiment, and the needle forming portion 2, the punching portion 3, and the needle insertion portion 4 described above. As long as it has a function equivalent to each of the binding portions 5.

DESCRIPTION OF SYMBOLS 1 Stapler 2 Needle formation part 3 Perforation part 4 Needle insertion part 5 Stitching part 6 Needle formation hole 8 Push rod 9 First lever handle 11 Rail base 12 Side block 13 Side block 14 Front block 15 Rear block 16 Second lever 18 Fourth lever 20 Paper needle 20a Male foot 20a1 Narrow tip 20b Female foot 20b1 Small hole (first small hole)
20c shoulder 20c1 small hole (second small hole)
21 Push-up block 22 Third lever 60 Document (paper bundle)
60a Slotted hole 60b Slotted hole 60c Small hole (third small hole)

Claims (2)

A paper needle for a stapler that is used by being inserted into a pair of elongated holes penetrating the paper bundle, and binding the paper bundle,
A male foot portion provided at one end of a long plate-like body bent in a U-shape, having a narrowed tip at the tip and inserted into one elongated hole of the paper bundle, and the other end of the main body A female foot portion that is inserted into the other elongated hole of the paper bundle and has a male foot portion and a female foot in the main body. And a shoulder portion formed with a second small hole into which the narrow portion can be inserted,
A third small hole into which the narrow end of the male foot can be inserted is formed between the pair of elongated holes of the paper bundle, and the female foot and the male foot are sequentially formed on the paper bundle. A staple for a stapler, wherein the staple is folded and the narrow end portion is inserted into the first hole, the third hole, and the second hole to bind the paper bundle. A stapler using the stapler paper needle according to claim 1,
Bending a long plate-shaped paper needle into a U-shape, a needle forming portion that forms the male foot, the female foot, and the shoulder;
A perforation part for forming the pair of elongated holes and a third small hole between the pair of elongated holes in the paper bundle;
A needle insertion portion for inserting the male foot portion and the female foot portion of the paper needle into the pair of elongated holes formed in the paper bundle,
The female foot and the male foot inserted in the pair of elongated holes of the paper bundle are folded and stacked in order, and the second small hole of the paper needle, the third small hole of the paper bundle, and the paper needle And a binding portion for inserting the narrowed portion of the male foot into the first small hole, the third small hole, and the second small hole. Feature stapler.

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