JPH0798312B2 - stapler - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stapler capable of easily binding a large number of documents, and particularly to a wide center-folded newspaper or document accurately in the center center line. The present invention relates to a structure in which a binding needle can be driven in to bind.

(Prior Art) A stapler that is designed to stack and stack a large number of documents, etc., presses the binding needle from one side of the document and bends the binding needle protruding from the opposite side of the document in the needle receiving groove to bind. The press-fitting point of the binding needle and the needle receiving groove must be exactly aligned with each other. Therefore, the driving portion of the binding needle and the needle receiving groove are inseparable.

When saddle-stitching a wide document, etc., with the stapler having such a structure, one side of the document must be inserted deeply into the stapler so that the stitching part of the staple and the needle receiving groove reach the center line of the document. Conventionally, many staplers for the purpose of this saddle stitching have been developed.

For example, the length of the stapler body is lengthened, or the stapler is provided with an expansion / contraction mechanism and stretched for saddle stitching.
There have been ones in which the driving part of the binding needle is rotated to change the shaft support part and the needle driving direction of the main body, and one in which the main body is mounted on a wide base plate.

(Problems to be Solved by the Invention) However, in the related art, for example, the main body is lengthened from the beginning, the main body is provided with an expansion / contraction mechanism and is stretched for saddle stitching, and the stitching portion of the binding needle is used. When changing the nail driving direction by rotating the, etc., and the direction of the shaft support of the main body and the binding needle is unchanged, the insertion length of the document is also limited, and the press-fitting point of the binding needle By increasing the distance to the shaft support, the strength in the lateral direction becomes weaker, and thick documents, etc. sometimes slipped sideways during driving and the needle was bent. In addition, in the hand-held state, there is a problem that the hand interferes and the document cannot be inserted deeply. In addition, there is a sufficient possibility of hitting the binding needle from the inside of the document to the outside, which causes problems such as catching an object at the bent portion of the staple or injury.

In addition, there is a problem in that the main body mounted on a wide base plate is very inconvenient to move and use, and a large storage space is required when not in use.

In any case, the needle receiving groove is wide,
If the document is spread over this and the center-folded line portion is placed on it, it is very easy to misalign, and there is a problem in that it cannot be confirmed whether the line of the center-folded line is aligned with the needle receiving groove, and it takes a lot of time and labor for positioning.

(Means for Solving Problems) The present invention has been made to solve the above-mentioned conventional problems, and it is not necessary to widen a wide document such as a newspaper, and moreover, it is possible to keep two folds from the center line. Or, just by placing the middle folding line part of the document in the needle receiving groove part while holding it in the four-fold, the center folding line does not shift in line with the needle receiving groove, the structure is simple and the strength of the needle receiving groove part To provide a stapler that can take out the staples accurately and always from the outside to the inside of the document.

The gist is the lower arm that supports the nail receiving groove of a handheld stapler. (A) Extension arm (12), folding back (35), insertion arm at the tip of needle receiving side of lower arm (5). Forming a substantially U-shaped extension part consisting of the part (11) (b) The insertion arm part (11) has a cross-sectional shape orthogonal to the extension direction and a vertical direction extending substantially in the extension direction. Form in a rectangular plate shape and extend linearly so that folded paper can be hung. (C) The needle receiving groove (7) is fixed to the upper part of the short side of the insertion arm (11) and the needle is also fixed. Arranging the needle in the receiving groove (7) at a position where it is vertically ejected (d) The folded portion (35) is arranged between the extension arm portion (12) and the insertion arm portion (11), and Form the reinforcing part (36) to fix it more firmly (e) Extension arm The part (12) is formed by extending a cross-sectional shape orthogonal to the extension direction to a thickness at least in the up-down direction along the extension direction and extending the above (a) (b) (c) (d) (e) Is a stapler.

(Operation) According to the present invention, this lower arm has a long U-shape immediately before the needle receiving groove.
The insertion arm part (11), which is formed with a V-shaped bent part and is provided with a needle receiving groove, is elongated in the longitudinal direction of the slit, and becomes thin in the longitudinal direction of the storage case. ing.

When setting a folded document in the needle receiving groove, the needle receiving groove is located on the upper surface of the elongated insertion arm (11), so naturally the valley portion of the document is hung over the insertion arm and the binding is performed. The needles are driven from the outside to the inside of the document.
Further, since the upper surface of the insertion arm portion is elongated, the deepest part of the folded portion of the document, that is, the bent portion of the document naturally coincides with the needle receiving groove.

Since this stapler can be supported with one hand by the lower arm and the upper arm, it can be used while holding it, and one side of a wide document fits in the groove of the long folding part, so it does not interfere with the operation.

(Example) Hereinafter, the Example of this invention is described based on drawing.

In the embodiment shown in FIGS. 1 to 6, the upper surfaces of the extension arm portion (12), the folding portion (35) and the insertion arm portion (11) at the lower arm tip are folded back to the same level, and they are integrated. It is an example in which it is formed so as to be non-rotatably fixed.

In the figure, (1) is a stapler, (2) is an upper arm, (3)
Is a storage case for the staples (4), (5) is a lower arm,
(6) is a needle push-out piece, (7) is a needle receiving groove, (8) is a spindle,
(9) is a slit. Alternatively, (10) is an upper part of the insertion arm part (11) on the short side, (12) is an extension arm part having the same shape as the insertion arm part (11), (13) is a fixed part, and (14) is a center-folded part. Documents, (15) is the center line, t is the insertion arm (1
The horizontal thickness of 1). In addition, (35) is the folded-back portion, (3
6) is a reinforced part.

The end of the insertion arm portion (11) of the lower arm is sharpened so that it can be smoothly inserted into a folded document, and the upper folding line (15) of the document may be aligned with the needle receiving groove (7). The width t of the upper surface is made as narrow as possible so that they can be in close contact with each other.

In addition, the lower arm insertion arm (11) and extension arm (1
The width Y with 2) can be arbitrarily determined, but it is set within 1/2 of the distance X from the spindle (8) to the needle receiving groove (7) for ease of operation.

(Effects of the Invention) According to the present invention as described above, a center-folded document is naturally placed in the needle receiving groove portion of the lower arm folding portion with the valley portion being the needle receiving groove side, and all of them are placed. Since the center folding line is aligned with the needle receiving groove by itself, the binding needle can always be driven onto the center folding line from the outside of the document. Therefore, it is safe because the sharp tip of the binding needle does not catch an object or scratch the hand.
In addition, documents and hands holding documents do not get in the way of operation, and you can quickly and accurately bind books with the documents and stapler folded in half from the broken line, and like a newspaper. For documents with a wide width that are folded in four, there is no need to reopen them on the workbench in order to drive the binding needle on the center fold line.
You can easily and accurately bind a book while folding it in your hand. Further, there is an advantage that saddle stitching and flat stitching can be freely performed without a switching operation.

[Brief description of drawings]

1 to 6 show an embodiment of the first invention.
The figure is a side view, FIG. 2 is a front view, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2, FIG. 4 is an explanatory view of a main part, FIG. 5 is a perspective view, and FIG.
The figure is an explanatory view of a main part in a used state. (1): stapler, (2): upper arm (3): storage case, (4): binding needle (5): lower arm, (6): needle extruding piece (7): needle receiving groove, (8) : Spindle (9): Slit, (10): Upper part of short side (11): Insert arm, (12): Extension arm (13): Fixed part, (14): Document (15): Center line (35): Folded part, (36): Reinforced part

Claims (1)

[Claims] 1. A lower arm for supporting a nail receiving groove of a hand-held stapler, comprising: (a) an extension arm portion (12), a folded portion (35), and an insertion portion at a tip end of a lower arm portion (5) on a needle receiving side. Forming a substantially U-shaped extension part composed of the arm part (11) (b) The insertion arm part (11) has a cross-sectional shape orthogonal to the extension direction with the up-down direction extending in the up-down direction. Form in a plate shape that is almost rectangular and extend linearly so that folded paper can be hung. (C) The needle receiving groove (7) should be fixed to the upper part of the short side of the insertion arm (11). Arrange at a position where the needle is vertically driven into the needle receiving groove (7). (D) The folded portion (35) is arranged between the extension arm portion (12) and the insertion arm portion (11), and they are mutually , Reinforcing part (36) should be formed to fix it more firmly. (E) Extension arm The part (12) has a cross-sectional shape orthogonal to the extension direction and is formed to have a wall thickness at least in the vertical direction in the extension direction, and extend the above (a), (b), (c), (d), (e). Characteristic stapler.