WO2003090975A1

WO2003090975A1 - Stapler

Info

Publication number: WO2003090975A1
Application number: PCT/JP2003/005051
Authority: WO
Inventors: Jun Maemori; Akira Aoki
Original assignee: Max Co., Ltd.
Priority date: 2002-04-24
Filing date: 2003-04-21
Publication date: 2003-11-06
Also published as: KR20040104618A; TWI229026B; KR100768970B1; JP4135392B2; CN1646271A; JP2003311646A; CN100339189C; TW200307590A; AU2003235325A1

Abstract

A stapler, wherein an arm cover (21) is formed so as to cover the bottom face and side faces of a clincher arm (14), a paper placing member (24) is swingably disposed between both side walls of the arm cover (21), a clincher (22) is formed so that the upper part thereof is laterally shortened and the lower part is laterally extended, the upper part of the clincher (22) is stored in an opening (25) formed in the paper placing member (24), and the lower side edge parts of the clincher (22) are stored in guide grooves (32) formed in both side walls of the arm cover (21) so that the clincher (22) can be guided in vertical direction.

Description

Stapler's technical field

The present invention relates to a stapler provided with a movable clincher that can be moved downward by legs of a stable penetrating a binding sheet, and suppresses the inclination of the clincher.

And a stapler capable of preventing buckling of a stable leg. book

Background art

In a stapler in which a U-shaped staple leg through which a plurality of sheets of binding paper penetrates is bent along the back surface of the binding paper on the lower surface side of the binding paper, the leg comes in contact with the leg portion of the stapler. A clincher for bending the portion is movably supported in the vertical direction, and is bent by engaging the legs of the staple with the clincher after the legs of the staple have passed through the binding paper. As shown in FIG. 6, the clincher 1 is housed in an opening formed in the paper placing member 2 and is arranged so as to be movable up and down with respect to the paper placing member 2. It is urged upward by a panel 4 interposed between the arm cover 3 and the bottom surface.

The paper placing member 2 is formed by a slider 6 slidable in the front-rear direction along the clincher arm 5 between the support piece 7 formed on the arm cover 3 and the paper placing member 2. At the start of the binding operation, it is held at an upper position with respect to the arm cover 3, and the stable guide groove 8 on the upper end surface of the clincher 1 is located at a desired position on the upper edge of the opening 9 formed in the paper placing member 2. Are located in

When the stable is driven into the binding paper arranged on the upper surface of the paper placing member 2, and the leading end of the stable penetrates the binding paper and penetrates to the back side of the binding paper, the leading end of the stable is clinched. The clincher 1 is moved downward with respect to the paper placing member 2 in contact with the upper end surface of the first. The binding paper supported on the paper After the staple has penetrated, the slider 6 is actuated to the rear side, and the paper placing member 2 is free to swing downward, the staple is further moved downward, and the staple leg is bent at once by the clincher 1. It has been like that.

As shown in FIG. 7 (a), the conventional clincher 1 is disposed inside the side wall of the arm cover 3 and is housed in an opening 9 formed in the paper placing member 2 which can swing vertically. As a result, the width dimension of the lower end of the clincher 1 cannot be increased. As a result, when the clincher reaches the bottom of the arm cover, a moment is generated in the clincher due to the eccentric load due to the step pull, and the clincher remains inclined as shown in FIG. ⁷ (b). Accordingly, the staple guide groove of the clincher is inclined, and as a result, when the slider moves rearward and the staple descends together with the paper placing member, the leg of the staple buckles. DISCLOSURE OF THE INVENTION

The present invention, in a stapler provided with a movable clincher, prevents the clincher from being greatly inclined when the clincher is moved downward by the staple legs, and eliminates the phenomenon that the staple legs buckle. It is an object of the present invention to provide a stapler adapted to perform such operations.

In order to solve the above problems, a stapler according to the present invention includes a magazine for accommodating a large number of stables, a handle unit including a driver for ejecting staples contained in the magazine toward spelling paper, and the magazine. And a clinch arm having a clinch portion for bending the tip of the leg of the stable penetrated through the spell sheet along the back surface of the spell sheet. In the stapler, the clincher portion forms an arm cover so as to cover a bottom surface and a side surface of the clincher arm, and a paper placing member is swingably disposed between both side walls of the arm cover. The clincher disposed between the paper placing members is formed such that the upper portion is narrower and the lower portion projects in both directions. Of accommodating the narrow top of the Ya in an opening formed through the sheet mounting member Then, the side edges of the lower protrusion of the clincher are accommodated in guide grooves formed on the inner surfaces of both side walls of the arm cover, and the guide when the clincher is lowered is provided at least between the opening of the paper placement member and the arm cover. The guide groove is configured to be guided by one of the guide grooves.

Also, the width of the upper part of the clincher and the width of the lower part protruding in both sides are formed in a width ratio such that the clincher is not inclined with respect to the rotational moment due to the eccentric load of the staple applied to the upper part of the clincher. You may. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a vertical sectional side view of a stapler showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a clincher portion of the stapler of FIG.

FIGS. 3 (a) to 3 (d) show the operating state by the stapler of FIG. 1, and FIG. 3 (a) shows the state immediately after the stable penetrates the binding paper at the initial stage of the binding operation. 3 (b) shows the state in which the clincher is moved downward by the stable leg penetrating the binding paper, and Fig. 3 (c) shows that the paper placing member can swing and the binding paper and the stapler Fig. 3 (d) shows a state in which the staple legs are further bent downward along the back surface of the binding sheet.

FIG. 4 is an explanatory diagram showing a correction mode using clinchers.

FIG. 5 is a graph showing the relationship between the height of the clincher groove and the dimension ratio from the position where the staple legs inclined to the talincher groove are installed to the side edge of the lower overhang.

FIG. 6 is a longitudinal sectional side view showing a clincher arm portion of a conventional stapler. Figs. 7 (a) to 7 (d) show the operating state by the clincher arm in Fig. 6, Fig. 7 (a) shows the initial state of the binding operation, and Fig. 7 (b) shows the state in which the binding paper has passed through. The state in which the clincher is moved downward by one pull leg is shown.

Reference numerals in the drawing, 13 are clincher portions, 14 is a clincher arm, 21 is an arm cover, 22 is a tarincher, 23 is a tarincher groove, 24 is a paper placing member, 25 is an opening, and 26 is a panel. , 27 is panel, 28 is slider, 29 is spring, 30 is support Part, 31 is both side walls, 32 is a guide groove. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the embodiments shown in the drawings. FIG. 1 shows an embodiment of a stapler according to the present invention. A handle provided with a magazine 10 for accommodating a large number of staples and a dryer 11 for ejecting a stable loaded in the magazine 10 toward spelling paper. 1 and a clincher arm 1 provided on the leading end side with a clincher section 13 for bending the tip of the leg of the stable punched out of the magazine 10 and penetrating the spelling paper along the back surface of the spelling paper. 4 are rotatably supported by support shafts 15 at the respective rear ends.

At the front end of the magazine 10, there is formed an ejection hole 16 for ejecting the first staple stored therein toward the binding paper arranged on the lower surface of the magazine 10. Further, the magazine 1 has a magazine 1 in the magazine 10. A pusher 17 for urging the stapler housed in 0 toward the ejection opening 16 is provided. The pusher 17 is slidably supported along a guide rod 18 arranged in the magazine 10, and is pushed forward of the magazine 10 by a pusher spring 19 arranged on the rear side of the pusher 17. Being energized.

By pressing the operation handle 20 arranged on the upper surface side of the handle portion 12, the staples in the magazine 10 are ejected from the ejection opening 16 via the driver 11, and the staple legs Section penetrates the binding paper placed between the magazine 10 and the tarinchi section 13, and the legs of the stable penetrating the binding paper are bent along the back side of the binding sheet by the clincher section 13. And the binding paper is bound.

The clincher portion 13 for bending the staple leg extending through the binding paper along the back surface of the binding paper has an arm cover 2 attached to the clincher arm 14 so as to cover the lower surface side of the clincher arm 14. 1 is provided with a clincher 22 arranged at the front end portion so as to be movable in the vertical direction, and the upper end surface of the clincher 22 is engaged with the leg of the stable to bind the leg to the binding paper. Inside each other along the back Kurinchiya groove ² 3 to be induced to bend towards is formed. Above the arm cover 21, there is disposed a paper placing member 24 whose rear end is supported swingably with respect to the clincher arm 14, and a front portion of the paper placing member 24. the Kurinchiya ² 2 is accommodated in the opening 2 in 5 formed. Further, the clincher 22 is urged upward by a spring 26 interposed between the lower surface of the clincher 22 and the bottom surface of the arm cover 21.

The paper placement member 24 is urged upward by a panel 27 interposed between the paper placement member 24 and the tarinchi arm 14. A slider 28 that can slide forward and backward along the clincher arm 14 is interposed between the clincher arm 14 and the clincher arm 14, and is positioned forward by the panel 29 at the start of the stapling operation. The support portion 30 of the slider 28 thus inserted enters the lower surface of the paper placing member 24 to prevent the paper placing member 24 from swinging downward. In this state, the paper placing member 24 is held at an upper position with respect to the arm cover 21, and the clincher groove 23 on the upper end surface of the clincher 22 is formed in the opening 2 formed in the paper placing member 24. 5 is located at the desired position on the top edge.

As shown in FIG. 2, the lower portion of the tarincher 22 is formed so as to protrude toward both sides so as to protrude to both sides of the paper placing member 24 and is formed widely. 2a is housed in guide grooves 32 (guide portions) formed on the inner walls of both side walls 31 of the arm cover 21. The guide grooves 32 allow the clincher 22 to move in the vertical direction. Guidance is provided. The upper portion of the clincher 22 may be guided by the opening 25 of the paper placing member 24.

With reference to FIG. 4 and FIG. 5, the dimension setting of the projecting portion 22a at the lower portion of the clincher 22 will be described. The function of the inclined clincher 22 to be seated on the bottom surface of the arm cover 21 to correct the inclination of the stapler S is based on the height h of the clincher groove 23 formed on the upper surface of the clincher 22 and the clincher groove. It is related to the dimension ratio to the dimension d from the position where the leg of the stable S inclined at 23 to the ground (landing) to the side edge of the lower overhang 22 a (that is, the side edge of the clincher 22). I do. According to the results obtained in the experiment, as shown in the graph of FIG. 5, the dimension of the overhang portion d = 0.32 'clinch It has been found that the frequency of buckling increases when the overhang dimension d of the overhang portion 22a is smaller than this, based on the relationship of the height h of the shaft. Therefore, buckling can be prevented by setting the overhang dimension d of the overhang portion 22a to be at least 0.32 times the height h of the clincher. The upper limit of the overhang dimension d is not particularly limited, but may be a size that does not hinder the handling of the stapler arm cover 21.

The operation of the above embodiment will be described below with reference to FIGS. 3 (a) to 3 (d). As shown in FIG. 3 (a), when the staple S is driven into the binding paper P arranged on the upper surface of the paper placing member 24, the legs of the staple S penetrating the binding paper P are attached to the clincher 22. The clincher 22 is moved downward against the urging force of the spring 26 by contacting the upper surface. In the initial stage of the binding operation, the slider 28 is disposed between the paper placing member 24 and the talincher arm 14, and the paper placing member 24 is supported at an upper position.

As shown in FIG. 3 (b), if the staple S is inclined when the legs of the staple S pass through the binding paper P, one leg of the staple S engages the clincher 22. Pressing one side of the clincher 22 downward and tilting it to operate downward, the lower part of the clincher 22 is in the guide groove 3 2 formed in both side walls 3 1 of the arm cover 21. The clincher 22 is moved downward without increasing the inclination. The overhanging portion 22a is formed wide so that the clincher 22 does not rotate due to the rotational moment due to the eccentric load of the staple S. As shown in FIG. 3 (c), after the legs of the stable S have penetrated the binding paper P, the slider 28 is actuated to the rear side so that the space between the paper placing member 24 and the tarinchi arm 14 is formed. The sheet placement member 24 is allowed to swing downward by retracting from the force.

As shown in Fig. 3 (d), even when the stapler S and the binding paper P are further pressed downward under the biased load shown in Fig. 3 (c), the clincher 22 is inclined. The legs of Stable s penetrating the lower surface of binding paper P do not buckle and clinch grooves The binding paper P is guided inward by 23 and is bent along the lower surface of the binding paper P to bind the binding paper P.

Further, the present invention is not limited to the above embodiments, and various modifications are possible within the technical scope of the present invention, and it goes without saying that the present invention extends to those modifications.

This application is based on a Japanese patent application filed on April 24, 2002 (Japanese Patent Application No. 2002-123042), the contents of which are incorporated herein by reference. Industrial applicability

As described above, according to the present invention, the lower portion of the clincher held movably in the up and down direction by the arm cover is formed to protrude in both directions to form a protruding portion, and the upper portion of the clincher is used as the paper placing member. The clincher is housed in the formed opening and the lower projecting part is housed in the guide grooves formed on both side walls of the arm cover for guiding. Can be set larger than the width dimension of the clincher, and the buckling of the stable can be effectively prevented by abutting the lower surface of the clincher and the bottom surface of the arm cover without tilting the clincher. Become.

Also, even when the clincher moves downward with respect to the paper placing member, the upper and lower portions of the clincher can be guided by the paper placing member and the arm cover in the entire area of the moving range of the clincher. This can prevent the clincher from tilting greatly, and can effectively prevent the occurrence of buckling.

Claims

The scope of the claims

1. A magazine that contains many staples,

A handle portion provided with a driver for ejecting a stable stored in the magazine toward spelling paper;

A clinch arm provided with a clinch portion for bending the tip end of the leg of the stable that is punched out of the magazine and penetrates the spell sheet along the back surface of the spell sheet;

An arm force bar mounted to cover the bottom and side surfaces of the clincher arm;

A paper placing member that is swingably disposed between both side walls of the arm force bar;

A rear end of the magazine and a rear end of the clincher arm are rotatably supported with each other,

The clincher section includes a clincher disposed between the arm cover and the paper placing member,

The clincher has an upper portion having a narrow width, and a lower portion having an overhang portion formed to overhang in both side directions,

An upper portion of the clincher is accommodated in an opening formed through the paper placing member, and a side edge of a protruding portion at a lower portion of the clincher is accommodated in a guide portion formed on a side surface of both side walls of the arm cover. And

The stapler, wherein the clincher is guided by at least one of an opening of the sheet placing member and a guide portion of the arm cover when the clincher is lowered.

2. The stepper according to claim 1, wherein the guide portion of the arm cover is a guide groove.

3. The ratio of the width of the lower part of the clincher to the width of the upper part of the clincher is: The stapler according to claim 1, wherein the clincher is formed so as to be a numerical value without being inclined with respect to a rotational moment caused by an eccentric load of the staple applied to an upper portion of the clincher.

4. The height h of the clincher and the dimension d from the position where the leg of the stepper inclined to the groove provided in the clincher touches the ground to the end of the lower side of the clincher are:

d≥ 0.32 h

The stapler according to claim 1, wherein the stapler is formed so as to satisfy the following relationship.