JPH08300847A - Document binder - Google Patents

Abstract

PURPOSE: To provide a novel document binder capable of binding a document without using a metal needle, capable of certainly fastening papers mutually to stabilize a bound state and not having anxiety dispersing the document scatteringly. CONSTITUTION: The first punch 7 allowed to fall by the operation of a lever to form a tongue like piece 2 wherein three sides are surrounded by notches to the end surface of a paper bundle 1 and a second punch 8 forming an inverted tongue like piece 3 wherein three sides are surrounded by notches in the same way in the vicinity thereof are provided. The rotary pawl 9 rotated in connection with the falling of the first punch 7 to laterally press the downward tongue like piece 2 formed by the first punch 7 to bend the same is provided and a hooking part 15 inserting the tongue like piece 2 in the punched hole 4 generated by raising the tongue like piece 3 formed by the second punch 8 by raising the tongue like piece 2 by raising the rotary pawl 9 in a state supporting the leading end part of the laterally bent tongue like piece 2 from below to engage the same with the hole 4 is provided to the second punch 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document binding device for integrally binding the ends of a stack of a plurality of sheets of paper, especially a so-called stapleless stapler of the type that does not use metal needles. Related to document binding tools.

[0002]

2. Description of the Related Art In the past, documents were generally stapled by a stapler using a metal needle, but recently, a stapleless stapler capable of binding documents without using a metal needle has been developed. Has appeared. this is,
A method is used in which a substantially U-shaped cut is formed in the paper, and the tongue-shaped piece at the inner side of the cut is simply bent and locked in the cutout hole to connect the paper to each other. However, in the case of documents bound by such a conventional stapleless stapler, the tongue pieces are easily disengaged, the binding state is unstable, and the documents tend to come apart.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, documents can be bound together without using a metal needle, and moreover, the sheets can be reliably joined together to stabilize the bound state. , The purpose of the invention is to provide a novel document binding tool that does not cause the documents to be scattered.

[0004]

In order to achieve the above-mentioned object, the document binding device of the present invention is lowered by the operation of a lever 6 and descends by the operation of a lever 6 tongue-shaped piece 2 surrounded by three notches at the end of the sheet bundle 1. Forming a first punch 7 and a second punch 8 forming a tongue piece 3 in the opposite direction, which is also surrounded by three notches in the vicinity thereof.
And a rotary claw 9 for pushing and bending the downwardly directed tongue-shaped piece 2 formed by the first punch 7 to the side by rotating in conjunction with the lowering of the first punch 7. A hole 4 formed by raising the tongue 2 by supporting the tip end of the tongue 2 bent to the side from below and pushing up the tongue 3 formed by the second punch 8. The hook portion 15 for inserting and locking the tongue-shaped piece 2 is provided on the second punch 8 so as to be configured.

[0005]

By operating the lever, the first punch 7 and the second punch 8 descend to form tongue-shaped pieces 2 and 3 for the sheet bundle 1, respectively. Next, the rotary claw 9 rotates in conjunction with the lowering of the first punch 7, and the rotary claw 9 pushes and bends the downward tongue 2 formed by the first punch 7 to the side. The tongue-shaped piece 2 bent to the side is a hook portion 1 provided on the second punch 8.
5 can support the bottom of the tip. Then, when the second punch 8 rises, the tongue-shaped piece 2 is lifted by the hook portion 15 and pushes up the tongue-shaped piece 3 formed by the second punch 8 from the lower side to form the punched hole 4, and the punching hole 4 is directly drawn. The tongue 2 is inserted into the hole 4 and locked. Therefore, the connection by the tongue-shaped piece 2 is surely performed, and the binding state is stabilized.

[0006]

Embodiments of the present invention shown in the drawings will be described below. First, the structure will be described with reference to FIGS. In FIG. 1, reference numeral 10 is a base. The base 10 has a mounting base 11 projecting from a substantially central portion of an upper surface thereof, and a series of a first punch 7 and a second punch 8 which will be described later penetrate through the upper surface in front of the mounting base 11. A die 13 having a through hole 12 is attached, and the die 1
Under the through hole 12 of No. 3, an escape hole 14 larger than that is provided.

A supporting plate 16 is horizontally arranged above the die 13 with an appropriate gap 32, and its rear end is fixed on the mounting base 11 of the substrate 10. This support plate 16 is also provided with two guide holes 17 and 18 which separately pass through the first punch 7 and the second punch 8 above the through hole 12 provided in the die 13, and between them. A receiving portion 19 for the rotary claw 9 described later is provided.

A box body 20 is installed on the support plate 16, and a punch holder 21 is vertically movable inside the box body 20. As shown in FIG. 2, the punch holder 21 is provided with a punch fixing portion 22 having a lower end opened in the central portion, and spring storage chambers 23, 24 having lower ends similarly opened on both sides thereof. As shown in FIG. 3, a first U-shaped punch 7 having a long cross section in the front-rear direction is formed at the front end (the left side in the drawing is the front side) of the punch fixing portion 22, and a cross section is formed at the rear end. The U-shaped second punches 8 each having a large width in the direction are fixed. The lower end blade portion of the first punch 7 is inclined forward and downward, and the lower end blade portion of the second punch 8 is inclined rearward and downward. Further, coil springs 25 and 26 are housed in the spring housing chambers 23 and 24, respectively, and the lower ends of these are received by the support plate 16. The punch holder 21 is repulsed by the coil springs 25 and 26 and is automatically raised upward. A bump 27 is provided on the upper surface of the punch holder 21.

The lever 6 is provided at the upper end and the front end of the box body 20.
The front end and the lower end are attached rotatably, and the lever 6 is in contact with the head of the hump 27 of the punch holder 21 in a posture inclined forward and downward. Further, the stopper 28 attached to the box body 20 is arranged above the substantially central position of the lever 6 to limit the rising of the lever 6.

A rotary claw 9 is rotatably attached to the inside of the first punch 7 fixed to the punch holder 21. The rotary claw 9 has a claw portion 29 that hangs downward at one end, and a spring receiving piece 30 that is inclined rearward and downward at the other end, and the lower end portion of the leaf spring 31 attached to the punch fixing portion 22. Is brought into contact with the rear surface of the spring receiving piece 30.

A window hole opened in the front-rear direction is formed in the side wall near the lower end of the second punch 8, and the window hole serves as a hook portion 15.

Next, the step of binding the sheet bundle 1 will be described with reference to FIGS. First, as shown in FIG. 6, the stack 1 of a plurality of sheets of paper is inserted and set in the gap 32 between the die 13 and the support plate 16, and the rear end of the lever 6 is pushed down.

Then, the punch holder 21 in which the head of the bump 27 provided on the upper surface is pushed by the lever 6 descends with respect to the box body 20, and the first punch 7 and the second punch 8 are integrally descended. The first punch 7 forms a tongue-shaped piece 2 surrounded by an inverted U-shaped cut in the front-rear direction at the end of the sheet bundle 1, and the second punch 8 has a U-shaped cut having a wide lateral width. A tongue 3 surrounded by is formed. These tongues 2 and 3 face downward when cut out. When the first punch 7 descends to a certain position, as shown in FIG. 7, the lower surface of the spring receiving piece 30 of the rotating pawl 9 contacts the receiving portion 19 of the support plate 16, and when the first punch 7 is further lowered, the rotating pawl is moved. 9 rotates together. As shown in FIG. 8, the claw portion 29 of the rotary claw 9 pushes the tongue 2 backward and bends it.

The tongue-shaped piece 2 bent backward by the claw portion 29 of the rotary claw 9 is inserted into the window hole provided in the second punch 8, that is, the hooking portion 15.

In this state, when the pushing down of the lever 6 is stopped and the hand is released, the rotary pawl 9 is rotated in the opposite direction by the force of the leaf spring 31 as shown in FIG. 9, and the first punch 7 and the second punch 7 are used. 8 is a coil spring 2 together with a punch holder 21.
It rises with the power of 5,26. At this time, since the tip of the tongue-shaped piece 2 is inserted into the window hole provided in the second punch 8, that is, the lower portion is supported by the hook portion 15,
It is lifted together by the punch 8.

The tongue-shaped piece 2 lifted by the second punch 8 pushes up the tongue-shaped piece 3 formed by the second punch 8 from the lower side to form the punched hole 4, as shown in FIG. Inserted in the hole 4 and locked,
The tongue 3 is pressed down from above. This allows
As shown in FIGS. 11 and 12, the binding of the ends of the sheet bundle 1 is completed. Reference numeral 5 is a punched hole formed by bending the tongue piece 2.

[0017]

As described above, the present invention has an effect that documents can be bound without using a metal needle. Also, the downwardly directed tongue 2 formed by the first punch 7
The rotary claw 9 is bent to the side, the tip of the tongue 2 is supported by the hooking portion 15 provided on the second punch 8, and the tongue 2 is lifted by raising the second punch 8. As a result, the tongue-shaped piece 3 formed by the second punch 8 is inserted and locked in the punched hole 4 formed in the trace of pushing up, so that it is possible to reliably connect the sheets of paper and stabilize the binding state of documents. Therefore, it is possible to eliminate the drawback that the conventional paper is easily dispersed in pieces.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view in which a substantially central portion is cut in a front-rear direction.

2 is a vertical cross-sectional view taken along the line AA of FIG. 1 and orthogonal to the cross section of FIG.

3 is a cross-sectional view taken along the line BB of FIG.

4 is a cross-sectional view taken along the line CC of FIG.

FIG. 5 is a bottom view.

FIG. 6 is a vertical cross-sectional view of a substantially central portion in a state where a sheet bundle is set.

FIG. 7 is a vertical cross-sectional view showing a state in which a tongue-shaped piece formed by a first punch on a sheet bundle is bent downward.

FIG. 8 is a vertical cross-sectional view showing a state in which a rotating claw laterally bends a tongue-shaped piece formed by a first punch on a sheet bundle.

FIG. 9 is a vertical cross-sectional view showing a state where the second punch is lifted.

FIG. 10 is a vertical cross-sectional view showing a state in which a tongue-shaped piece is inserted in a hole.

FIG. 11 is a perspective view showing a state where the end portions of the sheet bundle are bound together.

12 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper bundle 2,3 Tongue-shaped piece 4,5 Drain hole 6 Lever 7 1st punch 8 2nd punch 9 Rotating claw 10 Base 11 Mounting base 12 Through hole 13 Die 14 Escape hole 15 Hooking part 16 Support plate 17,18 Guide Hole 19 Rotating claw receiving part 20 Box body 21 Punch holder 22 Punch fixing part 23, 24 Spring storage chamber 25, 26 Coil spring 27 Cob 28 Stopper 29 Claw part 30 Spring receiving piece 31 Leaf spring 32 Gap

Claims (1)

[Claims] 1. A first member which descends by operating a lever 6 and forms a tongue-shaped piece 2 surrounded by cuts on three sides at an end portion of a sheet bundle 1.
A punch 7 and a second punch 8 which forms a reverse tongue 3 which is also surrounded by cutouts on three sides in the vicinity of the punch 7 are provided, and the first punch 7 rotates by interlocking with the lowering of the first punch 7. 7 is provided with a rotary claw 9 for bending the downwardly directed tongue 2 formed by 7 to the side and lifting the rotary claw 9 while supporting the tip of the laterally bent tongue 2 from below. The tongue 2 is lifted by the tongue 3 and the tongue 3 formed by the second punch 8 is pushed up to insert the tongue 2 into the punched hole 4 and the hook portion 15 for locking is attached to the second punch 8. A document binding tool characterized by being provided.