JP2003053680A - Cartridge for electric stapler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cartridge for an electric stapler capable of avoiding a failure of the electric stapler even when sheet staple is curved. SOLUTION: This cartridge 20 for the electric stapler is constituted in such a way that a plurality of linear staples 21A are arranged in parallel to form a sheetlike staple sheet 21, a laminated body 22 of the staple sheets 21 is supported by a support base 30, the staple sheet 21 in a lowermost part of the supported laminated body 22 is fed into a guide passage 71, the staple 21A positioned in a tip part on an outlet side of the guide passage 71 of the staple 21A sheet 22 fed into the guide passage 71 is formed into a U-shape by a forming plate 24B, and a leg part of the staple 21A protruding from a bundle of sheets is bent while inserting into the bundle St of the sheets by a screw driver 24A. A projecting part 50 which lifts a rear part side in the direction of feeding of the laminated body 22 of the staple 21A sheets and brings a front part side of the laminated body 22 close to a support base side is formed on the support base 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric stapler cartridge, and more particularly, to an electric stapler cartridge in which a staple sheet loaded in the cartridge is less likely to be jammed in a cartridge passage.

[0002]

2. Description of the Related Art Conventionally, an electric stapler cartridge shown in FIG. 15 is known. The cartridge 6 is held inside the box-shaped magazine 3. The cartridge 6 is provided with a box-shaped storage portion 9 for storing the storage case 10, and a passage portion 11 for passing one staple sheet 1 pulled out from the bottom of the storage portion 9. The stack 5 of staple sheets 1 is a storage case 1
It is stored in 0.

At the tip of the passage portion 11, there is formed a forming plate 7A for transforming one staple located at the tip of the staple sheet 1 fed out into a U-shape.
A driver 8 that allows staples that have been deformed into a U shape to pass through the sheet bundle 2 is arranged.

The lower end of the forming plate 7A has a U-shaped recessed molding surface, and the tip of the passage portion 11 located below the forming plate 7A is
An anvil 82 is formed which is a convex shape that deforms the staple into a U-shape in cooperation with the U-shaped concave forming surface.

The forming plate 7A and the driver 8 are integrally combined and fixed, and simultaneously move up and down. The staples at the leading end of the staple sheet 1 are formed by first forming the forming plate 7A and the anvil 8.
It can be bent in a U shape at 2. At this time, since the first staple of the staple sheet 1 is at the position of the forming plate 7A, the driver 8 is idle.

Forming plate 7A and anvil 82
When and bend the staple into a U-shape, the forming plate 7A and the driver 8 are temporarily raised, and the roller 12 feeds one staple sheet 1 by one staple.

Next, when the forming plate 7A and the driver 8 are lowered again, the staples bent in a U shape by the anvil 82 are pushed by the driver 8 and are driven in a direction of penetrating the bundle 2 of sheets. Be done. At this time, the pusher 80 biased to the left side in FIG. 15 by the spring 81 moves to the right side in FIG.
Retreat from the descending orbit.

A clincher 4 is provided below the driver 8 to bend the legs of staples protruding from the sheet bundle 2. When the driver 8 descends, the clincher 4 supports the lower surface of the sheet bundle 2. And driver 8
When the staples are driven into the sheet bundle 2, the legs are bent while supporting the sheet bundle 2. Reference numeral 14 is a tape for binding the laminated body 5, which is the tape 1
4 can be removed from the laminate 5.

[0009]

However, in such a conventional electric stapler cartridge, when the staple sheet 1 is passed through the passage portion 11 by the rotation of the roller 12, the central portion of the staple sheet 1 is lower than both end portions. If the staple sheet 1 is curved in a downwardly convex state so as to be located at the position, the front end of the staple sheet 1 on the side of the passage portion 11 may hit the opening edge portion of the passage portion 11 and the staple sheet 1 may not be fed. Occur.

Although the genuine staple sheet 1 is manufactured so as not to be bent in such a downward convex state, it is inevitable that the staple sheet 1 may be convex downward due to the operation of the stapler or the feeding operation of other staples during use. There is a possibility that the state will be warped. In this case, the staple sheet 1 may not be fed due to being caught on the opening edge of the passage 11.

The present invention has been made in view of such a problem, and even if the staple sheet is warped, the staple sheet enters the opening edge portion of the passage portion of the cartridge without being scratched, thereby causing less trouble. An object is to provide a cartridge for an electric stapler.

[0012]

In order to solve the above problems, the cartridge for an electric stapler according to claim 1 of the present application has a plurality of linear staples arranged in parallel to form a sheet-like staple sheet. A laminate support portion supporting the laminate, and provided adjacent to the laminate support portion so as to extend in a direction orthogonal to the staple,
And a guide passage having an up-and-down width into which only one staple sheet at the bottom of the stack can be inserted, the staple sheet being provided on the exit side of the staple passage in the guide passage and appearing from the exit side of the guide passage For an electric stapler in which one staple located at the front end of the staple is formed into a U-shape, and then both ends of the staple formed in the U-shape are passed through the sheet bundle and both ends of the staple are bent. A cartridge, wherein the laminated body support portion comprises:
It is characterized in that tilting means is formed so as to lift the rear side of the stack of staple sheets in the feeding direction and direct the front side of the stack toward the inlet of the guide passage.

The cartridge for an electric stapler according to claim 2 of the present application is the cartridge for an electric stapler according to claim 1, wherein the inclining means includes the protrusion provided on the laminate support portion and the laminate from above. It is characterized in that it is constituted by a pressing means which is pressed against the body supporting portion side.

The cartridge for an electric stapler according to claim 3 of the present application is the cartridge for an electric stapler according to claim 2, wherein the pressing means comprises a first protrusion for pressing the rear portion of the stack in the feed direction to the protrusion, and the stack. At least a second protrusion that presses the front end portion of the staple sheet at the bottom of the body in the feeding direction to the stack support portion so as to be at the same height as the guide passage is provided.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an electric stapler cartridge of the present application will be described with reference to the drawings.

FIG. 1 shows a sectional structure of an electric stapler cartridge according to an embodiment of the present invention. In FIG. 1, reference numeral 20 is a cartridge for an electric stapler (hereinafter,
21) staple sheet, 22
Is a stack of staple sheets 21, and 23 is a box-shaped case for holding the stack 22.

The staple sheet 21 is formed by arranging linear staples 21A made of a metal piece such as iron in parallel and fixing them into a sheet with an adhesive. This staple 21A
Is pressed from above the staple sheet 21 by a driver 24A made of a metal plate,
The staple 21A is separated from the staple sheet 21.

The staple 21A at the leading end of the staple sheet 21 is formed by a forming plate 24B having a recessed portion at the leading end, and the forming plate 24B.
And an anvil at a position facing each other are molded into a U-shape. The U-shaped staple 21A is sent to the feed claw 64 and positioned right below the driver 24A. When the driver 24A descends, the staple 21A is inserted into the stack of sheets St and the legs are bent by the clincher Cl.

After the staple sheets 21 are laminated to form a laminated body 22, the laminated body 22 is taped (see numeral 1 in FIG. 16).
4) and are stored in the storage case 26. The storage case 26 has a pair of side walls 26A and a rear wall 26B, and lower end edges of the pair of side walls 26A are connected by a bottom wall 26C. The side wall 26A has an arrow-shaped opening 27.
Is formed, the feeding direction of the staple sheet 21 is indicated, and it is possible to determine whether or not the stacking body 22 is in the proper posture at the time of loading.

The cartridge 20 has a box-shaped accommodating portion 28 for accommodating the laminated body 22 held in the accommodating case 26, a passage forming portion 29, and a support base 30 as a laminated body supporting portion.
And a pressing means 80 for pressing the laminated body 22 toward the support base 30.

The lower part of the cartridge 20 shown in FIGS. 1 and 2 is opened in a substantially rectangular shape, and the support base 30 is fitted into the opening 20A in the lower part of the cartridge 20. The rear portion of the cartridge 20 is a box-shaped storage portion 28,
The front portion of the cartridge 20 serves as a passage forming portion 29. The box-shaped storage portion 28 and the passage forming portion 29 are integrally connected, and as shown in FIG. 2, a face plate 31 is swingable by a pin 32 on a side wall portion 29A outside the passage forming portion 29. It is locked.

As shown in FIG. 6, a triangular hooking portion 33 is formed on the front wall portion 28A of the storage portion 28. An opening 34 extending in the up-down direction of the front wall portion 28A of the storage portion 28 is formed on the back side of the hook portion 33.
The lower end of the inside of the opening 34 is inside the opening 34 and near the lower end of the opening 34 (see FIG. 1). The lower end portion 33A of the hooking portion 33 penetrates into the inside of the opening portion 34 and presses the pressing means 80.
By engaging with the protrusion 36 of the spring holder 35, which is one element of the above, the spring holder 35 is prevented from falling outward from the opening of the storage portion 28 by the pressing force of the coil spring 37.

The front wall portion 28A of the storage portion 28 has a storage portion 2
An opening portion 38 (see FIG. 6) for detecting whether or not the laminated body 22 is housed inside 8 is formed.

In this opening 38, the magazine 3 shown in FIG.
When the actuator 40 provided in 9 moves in and out, and the actuator 40 contacts the laminated body 22, the protrusion 41 of the actuator 40 pushes the switch 42 and O
N, and it is detected that the stacked body 22 is loaded inside the storage portion 28.

A lever 4 for taking out the cartridge 20 from the magazine 39 (see FIG. 7) is provided at the rear of the storage section 28.
3 is projected. On the left and right side walls of the storage part 28, the hooking protrusions 4 are provided on the left and right edges of the rear part of the support base 30.
A fitting recess 45 into which 4 is inserted is formed. An arrow 46 indicating the direction of inserting the cartridge 20 into the magazine 39 is displayed on the side wall.

8 and 13 show the structure of the support base 30. On the support base 30, the slide plate 4 for the feed claw is provided.
7 is installed. The slide plate 47 is provided on the support base 30.
48A for supporting the front end side of the slide plate 47
Rails 48B that support the left and right side edges of the slide plate 47 and rails 48C that support the rear portion of the slide plate 47 are formed. A regulation plate 51A that regulates the forward movement of the slide plate 47 is formed in the front portion of the bottom portion 49 of the support base 30.
A regulation plate 51B that regulates the rearward movement of the slide plate 47 is formed on the rear portion of the bottom portion 49 of the support base 30.

A pair of protrusions 50, which are the main elements of the inclining means for inclining the rear portion of the laminated body 22 so as to lift it, are provided on the regulation plate 50B.

In this embodiment, the pair of protrusions 50 and the above-mentioned pressing means 80 constitute an inclining means. However, in order to bring the front end of the laminate 22 closer to the support base 30 side, the protrusions 50 are required. It is also possible that only.

In addition, the pair of protrusions 50 are attached to the support base 30.
However, the pair of protrusions 50 may be formed by projecting a rear end portion of a lower plate 67, which will be described later, supporting the stacked body 22 by press molding. On the lower plate 67,
When forming a protrusion that replaces the protrusion 50, the protrusion may be formed in a continuous structure instead of a pair so as to extend in the width direction of the lower plate 67.

A pusher 52 (see FIG. 9) is arranged at a front portion of the support base 30.

The pusher 52 has hooking portions 54 formed on both sides of a gently curved taper portion 53, and a hook portion 55 is formed at the tip of the hooking portion 54. The taper portion 53 is arranged so as to face the above-mentioned face plate 31, and the staple 2 is bent in a U shape.
1A is sandwiched between the tapered portion 53 and the face plate 31 and pushed by the driver 24 to descend.

A pair of protrusions 53A projecting from the lower portion of the tapered portion 53 are inserted into the guide groove 56 of the support base 30. The pair of hooks 54 are the protrusions 57 of the support base 30.
Between the side wall 58 and the side wall 58, and the hook portion 55 is projected.
Engage the rear part. Shaft portion 59 on the back side of the tapered portion 53
A spring 60 is attached to the support base 30. The spring 60 is supported by the regulation plate 51A to support the pusher 52 on the support base 30.
It is being pressed in front of.

FIG. 10A shows the structure of the slide plate 47. The slide plate 47 has a pair of engaging claws 61 on both sides. The engaging claw 61 is pushed by a shaft 62 penetrating the magazine 39 from the side, and the slide plate 47 slides in the horizontal direction by the engaging claw 61 being pushed by the shaft 62. An opening 63 is formed in the center of the slide plate 47, and the opening 6
The feed claw 64 is supported by the unit 3.

On both sides of the slide plate 47, as shown in FIG.
As shown in, a pair of hooks 65 for holding the feed claws 64 are formed. As shown in FIG. 10C, the feeding claw 64 includes a claw portion 64A that is caught in a groove of a joint between the staples 21A of the staple sheet 21, and a concave portion 6 of the hook portion 65.
5A, the protrusion 64B supported by 5A, and the spring 60.
It has a guide portion 64C for holding (see FIG. 1). The feed claw 64 is pressed by the repulsive force against the compression of the spring 60, and is pressed against the slide plate 47 so as to always project. The spring 60 is a pair of rails 4 of the support base 30.
8C (see FIG. 8). The rear end of the spring 60 is supported by the restriction plate 51B of the support base 30. The slide plate 47 is supported on the support base 30 as shown in FIG.

FIG. 11A shows a lower plate 67 for passing the staple sheet 21, and FIG. 12 shows an upper plate 68 for passing the staple 21A sheet. Figure 1
As shown in FIG. 4, the lower plate 67 is arranged so as to be located above the slide plate 47, and the upper plate 68 is shown in FIG.
As shown in (B), it is arranged on the lower plate 67. The projecting portion 50 of the inclining means projects to a position higher than the lower plate 67, and the rear portion of the laminated body 22 is supported by the support base 30.
And is positioned higher than the front of the stack 22. The slide plate 4 is provided in the opening 70 of the lower plate 67.
7 feed claws 64 are arranged so that the feed claws 64 can move in the front-rear direction.

The upper plate 68 is arranged so as to have a gap between the upper plate 68 and the lower plate 67 so that one staple sheet 21 can pass therethrough. Lower plate 67 and upper plate 6
The gap between the guide passage 71 and the guide passage 71 is a guide passage 71. A step portion 72 for receiving the laminated body 22 is formed on the central portion side of the lower plate 67. Positioning holes 73 into which projections (not shown) formed inside the passage forming portion 29 of the storage portion 28 are inserted in the upper plate 68 and the lower plate 67.
Are formed in pairs. A protrusion (not shown) that fits into the opening 74 at the front of the side wall of the support base 30 is formed in the passage forming portion 29 of the storage portion 28, and the storage portion 28 of the cartridge 20 and the passage forming portion are formed. When the portion 29 and the support base 30 are combined, the hooking protrusion 44 fits into the recess 45, and the protrusion of the passage forming portion 29 fits into the opening 74, so that the cartridge 20 is fixed.

The pressing means 80 comprises a spring holder 35 and a coil spring 37.

At the left and right edges of the spring holder 35, protrusions 78 are formed which are inserted into the guide grooves 77 formed on the inner surfaces of the left and right side wall portions of the storage portion 28. The protrusions 78 are formed in the guide grooves 77. The spring holder 35 is formed slightly longer in the extending direction and guides the spring holder 35 in the vertical direction.

The protrusions 75 and 76 are integrally provided on the spring holder 35 below the spring holder 35.

The projecting portion 75 presses a portion of the projecting portion 50 slightly forward of the projecting portion 50 toward the support base 30 side, so that the pressing load applied to the laminated body 22 acts on the front side of the central portion of the laminated body 22. There is. Further, the protrusion 76 presses the stack 22 toward the feed claw 64 side, and the feed claw 64 is easily caught in the groove connecting the staples 21A of the staple sheet 21.

Therefore, even when the cartridge 20 is loaded upside down with respect to the posture shown in FIG. 1, the laminated body 22 can be pressed against the support base 30 side. The support base 30 is provided at the rear of the stack 22.
Since the front part of the stack 22 is pressed against the guide passage 71 side, the feeding claw 64 can reliably feed the leading end of the staple 21A sheet into the guide passage 71.

In the electric stapler cartridge 20 of this embodiment, the laminated body 22 of the staple sheets 21 is supported by the support base 30, and the supported laminated body 22.
The staple sheet 21 at the bottom of the stack is fed into the guide passage 71 formed adjacent to the support position of the laminated body 22,
The staple 21A located at the outlet end of the guide passage 71 of the staple sheet 21 sent to the guide passage 71 is formed into a U-shape by the forming plate 24B.
An electric stapler cartridge in which legs of staples 21A protruding from the sheet bundle are bent while being inserted into the sheet bundle St, and a support base 30 serving as a stack body support portion (protrusions may be provided on the lower plate 67). ),
Since the rear portion side of the staple sheet 21 in the feeding direction of the laminated body 22 is lifted to form the protrusion 50 as an inclining means for bringing the front side of the laminated body 22 closer to the support base side, the leading end portion of the staple sheet 21 is Even when the staple sheet 21 is curved so as to deviate from the guide passage 71, the front end portion of the staple sheet 21 is pressed against the support base 30 side, so that the front end portion of the staple sheet 21 can be reliably fed into the guide passage 71. .

In this electric stapler cartridge 20, the inclining means is composed of a pair of protrusions 50 provided on the support base 30, a coil spring 37 and a spring holder 35 for pressing the laminated body 22 from above toward the support base 30. Therefore, for example, even when the cartridge 20 is loaded in the magazine 39 so that the cartridge 20 is turned upside down, the staple sheet 21 can be guided to the guide passage 71.

Further, the projection 75 (first projection) is pressed against the coil spring 37 and the spring holder 35, and the projection for pressing the front end portion of the lowermost staple sheet 21 of the stack 22 in the feeding direction is at the same height as the guide passage 71. Since at least the portion 76 (second protrusion) is provided, the forward end portion of the laminate 22 in the feeding direction can be pressed against the guide passage 71 side, and either the front portion or the rear portion side of the laminate 22 can be pressed. The situation in which the pressing force applied to is insufficient is eliminated, and the staple sheet 21 can be sent to the guide passage 71 more reliably than when the stacked body 22 is pressed by the spring holder 35 and the coil spring 37.

[0045]

According to the electric stapler cartridge of claim 1 of the present application, the staple sheet is configured such that the central portion of the staple sheet projects toward the stack support portion and both ends of the staple sheet are separated from the stack support portion. Even when the staple sheet is warped, the rear portion of the stack of staple sheets is lifted by the tilting means and the front side of the stack is brought closer to the support base side, so that the staple sheet is inserted into the guide passage without being caught. , Electric stapler failure is reduced.

According to the electric stapler cartridge of claim 2 of the present application, not only the rear portion of the laminated body is lifted from the support base by the projection portion which is the inclination means, but also the front portion of the laminated body is moved to the support base side by the pressing means. Even when the electric stapler is installed so that the support base is located above and the stack is located below in the direction of gravity in order to press the staple sheet, the front end of the staple sheet is surely attached to the guide path. You can guide to the entrance.

According to the electric stapler cartridge of claim 3 of the present application, the first projection, which is the pressing means, presses the rear portion of the stack against the projection side provided on the stack support portion, and the second pressing means is the same. The protrusion presses the front of the stack against the support base side. Therefore, when the front end portion of the staple sheet is guided to the entrance of the guide passage, the situation where the pressing force applied to either the front side or the rear side of the stack is insufficient is solved, and especially the stack is below the support base. Even in the case of the structure in which the electric stapler located in the position is installed upside down, the certainty of guiding the staple sheets is further improved as compared with the structure in which the pressing unit presses the entire stack toward the support base.

[Brief description of drawings]

FIG. 1 is a sectional view of an electric stapler cartridge according to an embodiment of the present invention.

2 is a side view of the electric stapler cartridge of FIG. 1. FIG.

FIG. 3 is a side view of a stack of staple sheets and a storage case loaded in the electric stapler cartridge of FIG.

4 is a side view of the support base of the cartridge of FIG.

5 is a plan view of the electric stapler cartridge of FIG. 1. FIG.

6 is a front view of the electric stapler cartridge of FIG. 1. FIG.

FIG. 7 is a cross-sectional view of the electric stapler cartridge loaded in a magazine.

8 is a perspective view of the support base of FIG.

FIG. 9 is a perspective view of a pusher attached to a tip portion of a support base.

10A is a perspective view of a slide plate mounted on a support base, FIG. 10B is a cross-sectional view of the slide plate, and FIG. 10C is a plan view of a feed claw.

FIG. 11A is a perspective view of a lower plate mounted on a slide plate, and FIG. 11B is a perspective view of a state in which the upper plate is arranged on the lower plate.

FIG. 12 is a perspective view of an upper plate disposed on the lower plate.

FIG. 13 is a perspective view showing a state where a slide plate is mounted on a support base.

FIG. 14 is a perspective view showing a state where a slide plate and upper and lower plates are mounted on a support base.

FIG. 15 is a perspective view of a conventional stack of staple sheets.

FIG. 16 is a cross-sectional view of a conventional electric stapler cartridge.

[Explanation of symbols]

20 Electric stapler cartridge 21 Staple sheet 21A staple 22 laminate 24A driver 24B forming plate 30 Support Base (Layer Support) 35 Spring holder (pressing means) 37 Coil spring (pressing means) 47 slide plate 50 protrusion 64 feed claw 67 Lower plate 68 Upper plate 71 guidance passage 75 First protrusion 76 Second protrusion

Claims (3)

[Claims] 1. A plurality of linear staples are arranged in parallel to form a sheet-like staple sheet, and a laminate support portion for supporting a laminate of the staple sheets, and the laminate support so as to extend in a direction orthogonal to the staples. And a guide passage having a vertical width into which only one staple sheet at the bottom of the laminated body can be inserted,
One staple provided at the exit side of the staple sheet in the guide passage and located at the leading end of the staple sheet that emerges from the exit side of the guide passage is formed into a U-shape and then formed into a U-shape. A staple cartridge for an electric stapler in which both ends of a staple are passed through a bundle of sheets and both ends of the staple are bent, wherein a rear side of a stack of staple sheets in a feeding direction is lifted to the stack support portion. A cartridge for an electric stapler, characterized in that tilting means for directing a front side of the stack toward an inlet of the guide passage is formed. 2. The electric stapler cartridge according to claim 1, wherein the inclining means includes a protrusion provided on the stack support and a pressing means for pressing the stack from above toward the stack support. A cartridge for an electric stapler, which is configured. 3. The electric stapler cartridge according to claim 2, wherein the pressing means includes a first protrusion that presses a rear portion of the stack in the feed direction against the protrusion, and a front end of the lowermost staple sheet in the feed direction. 2. A cartridge for an electric stapler, comprising at least a second protrusion that presses the portion against the laminated body supporting portion so that the portion has the same height as the guide passage.