JPH09155764A - Motor-driven stapler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor-driven stapler capable of stabilizing sheet staple feeding from a cartridge. SOLUTION: This stapler is constituted of a cartridge for laminating and housing sheet staples S, a feeding mechanism 200 for delivering the sheet staples S to a projecting part from the cartridge, and a driver reciprocating to project the staples of the delivered sheet staples from the projecting part. In this case, the feeding mechanism 200 forwardly delivers from the cartridge a back-and- forth reciprocatable feeding plate body 220 having a stepped part 222d abutted to the rear ends Sa of the sheet staples S housed in the cartridge, and the sheet staples S by abutting the stepped part 222d of the feeding plate body 220 to the rear ends Sa of the sheet staples S on forwardly moving the feeding plate body 220.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric stapler in which a cartridge containing stacked sheet staples is mounted, the sheet staples in the cartridge are sent to a punching section, and the staples of the sheet staple are punched from the punching section.

[0002]

2. Description of the Related Art An electric stapler shown in FIG. 22 is conventionally known. Such an electric stapler includes a cartridge K in which the sheet staples S are stacked and stored, a feeding mechanism E that feeds the sheet staples S to the ejection unit U, a driver D that reciprocates to eject the staples from the ejection unit U, and the like. I have it.

The feeding mechanism E moves the lowermost sheet staple S1 of the cartridge K forward from the cartridge K (see FIG. 2).
2 includes a roller R1 that sends out to the left) and rollers R2 and R3 that send the sheet staple S1 sent out by the roller R1 to the ejecting section U. Each roller R1 ~
R3 is designed to rotate in association with the reciprocating movement of the driver D. When the cartridge K is initially mounted, each time the driver D ejects a staple from the ejection unit U, the sheet staple S1 is ejected by a predetermined distance. It is designed to be sent to U.

When the staples are ejected from the ejecting section U in the normal use state, the rollers R1 to R3 are
When the sheet staple S1 moves by one staple, the sheet staple S1 cannot move further forward, so that the surface of the sheet staple S1 is set to slip.

[0005]

However, in such an electric stapler, since the sheet staple S1 is fed forward from the cartridge K by the frictional force of the roller R1, the feeding is unstable. There was a problem of becoming.

The present invention has been made in view of the above problems, and an object thereof is to make it possible to stabilize the feeding of sheet staples from a cartridge, and moreover, to feed the sheet staples at the initial stage of mounting the cartridge. It is to provide an electric stapler that can be sufficiently secured.

[0007]

In order to achieve the above object, the present invention provides a cartridge in which sheet staples are stacked and housed, a feeding mechanism for feeding the sheet staples from the cartridge to the ejection portion, and the fed sheet. An electric stapler comprising a driver that reciprocates staples of a staple and ejects the staples from the ejection unit, wherein the feeding mechanism abuts a rear end of a sheet staple housed in a cartridge. And a moving mechanism that moves in the front-rear direction in conjunction with a driving mechanism that reciprocates the driver. When the moving mechanism moves forward, the contact portion of the moving mechanism contacts the rear end portion of the sheet staple. When the sheet staples cannot be moved by a predetermined distance by contacting and feeding the sheet staples forward from the cartridge by a predetermined distance, The forward movement of the regardless movement means to drive the drive mechanism, characterized in that is adapted to stop.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an electric stapler according to the present invention will be described below with reference to the drawings.

1 to 5, reference numeral 1 denotes an electric stapler attached to, for example, a copying machine. The electric stapler 1 includes a stapler body 10 and a stapler body 1.
The cartridge 700 is detachably mounted in the cartridge chamber 25 formed in the cartridge 0.

The stapler main body 10 includes a table 100 that reciprocates, a table mechanism 150 that reciprocates the table 100, and a feeding mechanism 200 for feeding the sheet staples S stacked in the cartridge 700 to the ejection unit 720 (see FIG. 9)), the ejection mechanism 300 that ejects the staple S from the ejection unit 720, the clincher mechanism (not shown) that bends the leading end of the ejected staple, and the drive that drives each mechanism 150, 200, 300. A mechanism 500 and a detection mechanism (not shown) for detecting the position of the table 100 are provided. Further, on the front surface of the stapler main body 10, an actuator 2 is provided for detecting whether or not there is a U-shaped staple S1 in the gap 725 of the embossing section 720. A micro switch (not shown) for detecting the presence or absence of the staple S1 based on the movement is provided. This micro switch is attached to the substrate 3.

[Drive Mechanism 500] As shown in FIGS. 6 and 7, the drive mechanism 500 includes a motor M provided on the main body 10, a gear 501 attached to a drive shaft Ma of the motor M, and a gear 501. Intermediate gears 502,5 meshing with
03, a drive gear 504 meshed with the intermediate gear 503,
Cam drive shaft 510 that rotates with this drive gear 504
It is composed of

The cam drive shaft 510 is adapted to rotate clockwise (in FIG. 4) via the gears 501 to 504 by the drive of the motor M (in FIG. 3, it rotates counterclockwise). Movement).

A pair of table cams 511, a pair of feed cams 512, a pair of driver cams 513, and a clincher cam 514 are attached to the cam drive shaft 510.

Both ends of the cam drive shaft 510 are inserted into holes 17 formed in the side plates 12 and 13 of the frame 14 and are rotatably held. The intermediate gears 502 and 503 are rotatably attached to the side plate 13 of the frame 14 (see FIG. 4).

The table 100 is provided on the stapler body 10 so as to be capable of reciprocating. As shown in FIGS. 3 and 4, the table 100 is reciprocated by the table mechanism 150 (moves up and down in FIGS. 3 and 4). ing.

[Table mechanism 150] Table mechanism 15
0 is the side plate 12, 1 of the frame 14 as shown in FIG.
Link shaft 151 inserted vertically into the elongated hole 18 of No. 3
A link member 152 that rotates about the link shaft 151 as a fulcrum, a table cam 511, and the link member 152 that abuts on the peripheral surface of the table cam 511.
And a roller 153 rotatably attached to the upper part (in FIGS. 3 and 4). Link member 15
2 is biased counterclockwise (in FIG. 3) by a spring (not shown), and the roller 153 is always in contact with the peripheral surface of the table cam 511.

As shown in FIG. 3, the table cam 511 has an increasing portion 511A whose diameter increases as it rotates counterclockwise and a large diameter portion whose diameter becomes maximum and constant. 511B, a decreasing portion 511C whose diameter decreases, and a small diameter portion 511D having a minimum diameter.

The link member 152 includes side plate portions 152A and 152B that fixedly hold both ends of the link shaft 151, and a connecting plate portion 15 that connects the lower ends of the side plate portions 152A and 152B.
2C, the side plate portions 152A, 152B on the lower side of the link shaft 151 form arm portions 152a, 152b extending obliquely forward to the table 100 side, and the arm portions 152a, 152b follow the arm portions. Elongated hole 1
54 are provided. The table 100 is provided in the long hole 154.
The shaft 101 provided in the shaft is rotatably inserted, and the link member 152 rotates clockwise (see FIG. 3) with the link shaft 151 as a fulcrum.
The table 100 is raised in the direction of the arrow by rotating the table 100).

The table 100 has rollers 153.
Is in the home position (initial position) shown in FIGS. 3 and 4 when the roller 153 is in contact with the peripheral surface of the small diameter portion 511D of the table cam 511, and the roller 153 moves the table cam 511.
When the roller 153 comes in contact with the peripheral surface of the large diameter portion 511B, it comes in contact with the lower surface 720A of the embossing portion 720, and the roller 1
When 53 comes into contact with the peripheral surface of the decreasing portion 511C, it descends.

The link shaft 151 is urged upward by a spring (not shown) so that it does not move downward when the binding sheet T is thick so that the rotation of the table cam 511 is not hindered. . The table 100 has
Clinchers 401 and 402 are provided, and a clincher mechanism (not shown) rotates the clincher 401 and 402 to clinching the leading end portion of the sheet staple.

[Launching Mechanism 300] Launching Mechanism 300
As shown in FIG. 5, is composed of a driver cam 513 provided on the drive shaft 510 and a launching link 310.

The driver shaft 317 is adapted to reciprocate along the long hole 37 by the rotation about the shaft 314 of the embossing link 310 as a fulcrum.

A forming plate 320 is attached to the driver shaft 317 as shown in FIG. 8, and a driver 321 is attached to the forming plate 320. Then, the forming plate 320 and the driver 321 reciprocate together with the driver shaft 317.

The forming plate 320 descends so as to straddle a projecting portion 714 provided at the front end of a staple guide 712 (see FIG. 8) which will be described later. The staples sent out are formed into a U shape. The driver 321 is for ejecting staples formed in a U shape.

[Feed Mechanism 200] As shown in FIGS. 9 to 11, the feed mechanism 200 includes a feed cam 512 provided on the drive shaft 510, the bottom plates 31A and 31B of the magazine 30, and the side plate 12 of the frame 14. A first feed lever (feed lever) 201 arranged along the inside of
Feed levers (feed levers) 210, 215, feed plate body 220, ratchet 231 and roller 232
And so on. The first and second feed levers, 201 and 210, and the feed plate body 220 constitute a moving means.

The ratchet 231 and the roller 232 are attached to the shaft 233. This shaft 233 is rotatably attached to a bearing 34A provided on the lower side wall 34 of the magazine 30, and together with the shaft 233, a ratchet 231.
And the roller 232 is adapted to rotate.

The feed cam 512 includes the first and second step portions 512.
First and second large diameter portions 512A and 512B having a and 512b
And small diameter portions 512C, 512D and the like. First,
Notches 512c, 51 are formed in the second large diameter portions 512A, 512B.
2d is provided, and the first and second large diameter portions 512A, 51
The rear portions 512e and 512f of 2B have elasticity.

On the tip of the first feed lever 201, there is provided a projection 202 that comes into contact with the first and second step portions 512a and 512b of the feed cam 512, and below the tip of the ratchet 23.
The claw 203 that engages with the first claw 231a is provided.
Further, an elastic folding back portion 204 is formed on the intermediate portion of the first feed lever 201 by folding back toward the front, and the folding back portion 204 is held by the pressing portion 33 of the magazine 30.
It is in a state of being pressed from above by B.

Further, a long hole 205 extending in the front-rear direction and having a projection 33C provided on the side wall 33 of the magazine 30 loosely fitted is formed on the side surface of the rear side of the first feed lever 201. Further, a rod portion 206 that extends rearward and is in contact with the upper portion 211 of the second feed lever 210 is provided on the upper portion of the rear end of the first feed lever 201.

The tip of the first feed lever 201 is connected to one end of a spring 208, and the other end of the spring 208 is fixed to the magazine 30. This spring 208 always attaches the first feed lever 201 forward. It is biased so that it is located at the initial position shown in FIG.

The second feed levers 210, 215 have upper portions (slip portions) 211 formed in an R shape, and intermediate portions thereof are pivotally supported by shafts 19 provided on the side plates 12, 13 of the frame 14 and are rotatable. Has become. Further, an elongated hole 212 is provided in the lower portion of the second feed levers 210, 215.

A protrusion 213 protruding outward is provided on the upper side surface of the second feed lever 210. The protrusion 213 and the protrusion 20 provided on the side wall 12 of the frame 14 are provided.
Is provided with a spring 214. Further, on the side surface of the upper portion of the second feed lever 215, the protrusion 21 protruding inward is provided.
6 is provided, and a spring 217 is provided on the projection 216 and a projection (not shown) provided on the magazine 30, so that the second feed lever 210 can be rotated counterclockwise by the springs 214 and 217. Being energized.

As shown in FIGS. 12 and 13, the feed plate body 220 includes a housing portion 222 having a through hole 221 into which the guide plate 39 is inserted, and the housing portion 222.
Side walls 222A, 222B of the magazine 30 to the side wall 34,
It has arm portions 223 and 224 extending in the 34 direction. Two notches 2 are formed on the upper wall 222C of the housing 222.
25 is provided, and an elastic piece 226 is formed by these two notches 225, and the elastic piece 226 is provided with a projection 226a engaged with the guide groove 39A of the guide plate 39. Further, a step portion (contact portion) 222d that contacts the rear end portion Sa of the sheet staple S is formed on the feed plate 222D that is the bottom wall of the housing portion 222.

The arm portions 223 and 224 are provided with shafts 223A and 224A inserted into the long holes 212 and 212 of the second feed levers 210 and 215, respectively, and the second feed levers 210 and 215 rotate clockwise. By being moved, the feed plate body 220 moves forward, and this movement causes the step portion 222d of the feed plate 222D to move to the cartridge 50.
The sheet staple S is fed forward by contacting the rear end Sa of the uppermost sheet staple S stacked in the sheet 0.

[Cartridge 700] Cartridge 70
As shown in FIG. 14 to FIG. 16, 0 is composed of a cartridge body 701, a delivery section 710 having a sheet staple feed passage 711, and an ejection section 720 provided at the tip of the delivery section 710. It is configured.

Inside the cartridge body 701, there are provided a holder 702 which can be moved up and down, a spring 703 which biases the holder 702 upward, and a pair of locking pieces 705 which extend upward from the bottom and form a claw 704. The inner cartridge 75 is provided with the holder 702.
The stacked sheet staples S in a state of being wrapped by 0 are held.

As shown in FIG. 17, the inner cartridge 750 includes side wall portions 751 and 752, a rear wall portion 753, and
It has a connecting portion 755 that connects the upper portions of the side wall portions 751 and 752, and the rear wall portion 753 has a claw 70 of the locking piece 705.
4 is formed with an engagement hole 756, and this engagement causes the inner cartridge 750 to move.
Fixed inside.

A staple holder 707 is rotatably provided on the cartridge body 701 as shown by a broken line, and a holding portion 707 of the staple holder 707 is provided.
A and the connecting portion 755 of the inner cartridge 750,
The surface of the stacked uppermost sheet staple S is pressed down. The sheet staple S in the inner cartridge 750 is inserted into the cartridge main body 701 together with the inner cartridge 750 from the direction of the arrow shown in FIG.
It is something to put inside. At this time, the staple holder 70
7 is rotated to the broken line position.

The rear wall 7 of the cartridge body 701 is also used.
The upper portion of 01A is provided with a recess 709 into which the feed plate 222D of the feed plate body 220 can advance, and the feed plate 2 of the feed plate body 222 is formed from this recess 709.
When 22D enters, the uppermost sheet staple S is sent to the feed path 711.

The sending section 710 is provided with a staple guide 71.
2 and a guide retainer 713 and the like. The staple guide 712 and the guide retainer 713 form a feed passage 711.
Are formed.

The embossing section 720 has a staple guide 712.
The guide plate 721 includes a face plate 721 arranged to face the leading end portions 712A and 713A of the guide retainer 713, a pusher 731 held by a holding member 730 provided on the lower surface of the staple guide 711, and the like.

Side plate portions 722 are continuously formed on both sides of the face plate 721, and the side plate portions 722 are held by the holding member 7.
A side plate 722 is pivotally supported on a side part 730b of the shaft 30 by a shaft 715, and a side plate part 722 is rotatable as shown by a broken line. In this, the side plate portion 722 is rotated to move the face plate 721 to the broken line position, thereby removing the staples clogged in the gap 725 of the ejection portion 720.

As shown in FIG. 18, the face plate 721 is formed with a flat recess 723 that is recessed forward, and a protrusion provided on the inner side surface 723a of this recess 723 and the tip portion 712A of the staple guide 712. A vertical gap 725 is formed between the gap 725 and 714. The upper portion of this gap 725 is an opening 725A (see FIG. 15) through which the driver 321 enters, and the gap 7
The lower portion of 25 is an ejection port 725B from which staples are ejected by the driver 321.

Further, the protruding portion 7 of the staple guide 712 is
On both sides of 14, a vertical gap 726 is formed between the face plate 721 and the tip portion 713A of the guide retainer 713 and the like, and the forming plate 320 can enter the gap 726.

[Operation of Electric Stapler] Next, the operation of the electric stapler 1 configured as described above will be described.

First, the cartridge 700 in which the sheet staples S are stacked is attached to the stapler body 10 in advance. When the motor M is not driven, the table 10
0 is located at the initial position shown in FIG.
Is also in the initial position shown in FIG.
The roller 153 is in contact with the small diameter portion 511D of the roller 11.

When the table 100 is in the initial position,
The feed cam 512 attached to the cam drive shaft 510
Is in the state shown in FIG.

When the motor M is driven by the spelling signal from the copying machine, the cam drive shaft 510 rotates counterclockwise (in FIG. 3) via the gears 501 to 504, and together with the cam drive shaft 510. The cams 511 to 514 also rotate.

The roller 1 is rotated by the rotation of the table cam 511.
When 53 starts to come into contact with the peripheral surface of the increasing portion 511A from the peripheral surface of the small diameter portion 511D of the table cam 511, the link member 152 rotates clockwise around the shaft 151 as a fulcrum, and the table 100 rises. To go.

When the table 100 starts to move up, the first step portion 512a of the feed cam 512 contacts the projection 202 of the first feed lever 201.

When the cam drive shaft 510 further rotates and the table 100 rises, the first feed lever 201 resists the spring 208 and moves backward by the feed cam 512 (see FIG. 19). In the right direction). By the rearward movement of the first feed lever 201, the claw 203 of the first feed lever 201 meshes with the claw 231a of the ratchet 231 to rotate the ratchet 231 clockwise. The rotation of the ratchet 231 causes the shaft 233 and the roller 232 to rotate in the clockwise direction, and the rotation of the roller 232 causes the sheet staple S to rotate.
Is sent forward.

On the other hand, the rearward movement of the first feed lever 201 causes the rod portion 206 of the first feed lever 201 to push the upper portions 211 of the second feed levers 210 and 215 rearward. As a result, the second feed levers 210 and 215 rotate clockwise (in FIG. 19) about the shaft 19 as a fulcrum.

The rotation of the second feed levers 210 and 215 in the clockwise direction moves the feed plate body 220 forward, and this movement causes the step portion 222d of the feed plate 222D to move.
The sheet staple S is fed forward by contacting the rear end Sa of the uppermost sheet staple S stacked in the cartridge 700. That is, in the initial stage of mounting the cartridge 700, the sheet staple S is sent out from the cartridge 700 by a predetermined distance by the feed plate 222D and further forward by the roller 232.

As described above, since the step portion 222d of the feed plate 222D abuts against the rear end Sa of the sheet staple S and delivers the sheet staple S, the sheet staple S can be reliably delivered from the cartridge 700, and the sheet staple S is separated by a predetermined distance. Since S is sent out, it is possible to secure a sufficient amount of sending. Also, the table 100
Since the sheet staple S is only vertically moved, a strong shock is not applied to the cartridge 700. Further, since the sheet staple S is not delivered by the frictional force as in the conventional case, the delivery of the sheet staple S is stable.

The roller 153 is connected to the table cam 51.
When the contact with the peripheral surface of the large-diameter portion 511B of No. 1 starts, that is, when the cam drive shaft 510 rotates by approximately 90 degrees, the table 100 moves to the lower surface 720A position (top dead center) of the hitting portion 720.
And the spelling sheet T is pinched.

While the roller 153 is in contact with the peripheral surface of the large diameter portion 511B of the table cam 511, the table 10
0 continues to stop at the top dead center, and the spelling sheet T remains in the sandwiched state. While the binding sheet T is being sandwiched, the forming plate 320 and the driver 321 further descend together with the driver shaft 317, and the forming plate 320 and the driver 321 enter into the gaps 725 and 726 of the ejection portion 720. When the staples S1 and S2 are present in the gaps 725 and 726, as shown in FIG. 21, the forming plate 320 forms the staple S2 in a U-shape, and the driver 321 forms the staple S1 in the U-shape in the ejection portion 720. The spelling sheet T is ejected from the ejection port 725B.

On the other hand, when the cam drive shaft 510 further rotates from the state shown in FIG. 19, the first step portion 5 of the feed cam 512 is rotated.
Although the projection 202 of the first feed lever 201 is disengaged from 12a, it comes into contact with the first large diameter portion 512A of the feed cam 512, so that the first feed lever 201 maintains the state of FIG.
That is, the table 100 reaches the top dead center, and the driver 3
The first feed lever 201 is held until the staple S1 is ejected by 21.

Then, as the cam drive shaft 510 rotates, the projection 202 of the first feed lever 201 is disengaged from the first large diameter portion 512A of the feed cam 512. That is, when the ejection of staples is completed, the first feed lever 201 returns to the original position (the position shown in FIG. 9) by the spring 208.

When the staple S1 is ejected, the clincher 401 and 402 are clinched by a clincher mechanism (not shown).
Rotates to clinch the front end Sc of the sheet staple S1. After that, the roller 153 contacts the peripheral surface of the reduced portion 511C of the table cam 511, and the table 100 begins to descend.

As the table 100 descends, the step portion 512b of the second large diameter portion 512B of the feed cam 512 contacts the projection 202 of the first feed lever 201.

Then, in the same manner as above, the feed plate body 220 moves forward, and this movement causes the feed plate 2 to move.
The step portion 222d of 22D contacts the rear end Sa of the sheet staple S to feed the sheet staple S forward. Further, the rotation of the cam drive shaft 510 causes the first feed lever 20 to rotate.
The projection 202 of No. 1 is the second large diameter portion 512B of the feed cam 512.
When it comes off, the first feed lever 201 moves the spring 20.
8 returns to the original position (the position shown in FIG. 9). After that, the table 100 returns to the home position.

As described above, while the table 100 moves up from the home position to the top dead center and then returns from the top dead center to the original home position, that is, during the single stapling operation, the sheet staple S is moved to the second position. It will be sent out.

When the sheet staples S are lined up from the ejection section 720 to the cartridge 700, the feed plate body 220 moves the sheet staple S by one staple and stops. Therefore, the clockwise rotation of the second feed lever 210 is stopped. However, the long hole 20
Since the projection 33C is loosely fitted in the upper portion of the first feed lever 201 and the rear portion of the first feed lever 201 is lifted, the rod portion 206 of the first feed lever 201 is moved to the second feed lever 210, 215 as shown in FIG. The upper part 211 is slipped on and climbs up, and the first feed lever 201 moves further rearward. Therefore, the rotation of the feed cam 512 is not hindered.

By the way, when the cartridge 700 is first attached to the stapler body 10 (in the initial stage),
The staple S is placed in the gap 725 (see FIG. 5) of the ejection portion 720.
Since 1 does not exist, the control circuit provided on the circuit board 610 keeps the motor M until the staple S1 comes into the gap 725.
Drive. That is, the motor M is driven until the micro switch detects the staple S1 via the actuator 2, and the staple is not ejected, and only the sheet staple S feeding operation is performed.

By this operation, the uppermost sheet staple S laminated on the cartridge 700 is fed to the ejecting section 720, but when the cam drive shaft 510 makes one rotation, the sheet staple S is fed by the feed cam 512.
Is fed twice, so that efficient sheet staple feeding is performed.

In the above embodiment, the case where the electric stapler 1 is attached to a copying machine and used is explained.
The present invention is not limited to this, and can be used by being attached to, for example, a printing machine or a facsimile.

[0067]

As described above, according to the present invention, when the moving means moves forward, the contact portion of the moving means contacts the rear end portion of the sheet staple to move the sheet staple forward from the cartridge. Since the sheet staple is sent out by a predetermined distance, the sheet staple can be surely sent out from the cartridge. In addition, in the initial stage of mounting the cartridge, it is possible to secure a sufficient sheet staple feed amount, and the delivery is stable. Further, when the sheet staple cannot be moved by a predetermined distance, the forward movement of the moving means is stopped midway regardless of the driving of the driving mechanism, which prevents the driving mechanism for reciprocating the driver from being disturbed.

[Brief description of the drawings]

FIG. 1 is a front view showing an external appearance of an electric stapler according to the present invention.

2 is a plan view of the electric stapler shown in FIG. 1. FIG.

FIG. 3 is a right side view of the electric stapler shown in FIG.

4 is a left side view of the electric stapler shown in FIG. 1. FIG.

5 is a cross-sectional view of the electric stapler shown in FIG.

FIG. 6 is an explanatory diagram showing a drive mechanism.

FIG. 7 is an explanatory view showing a cam attached to a cam drive shaft.

FIG. 8 is a perspective view for explaining a U-shaped molding using a forming plate.

FIG. 9 is an explanatory diagram showing a configuration of a feeding mechanism.

FIG. 10 is a plan view showing the positional relationship of the feeding mechanism.

FIG. 11 is an explanatory diagram showing the positional relationship of the feeding mechanism with respect to the frame.

FIG. 12 is a perspective view showing a feed plate body.

FIG. 13 is a cross-sectional view of a feed plate body.

FIG. 14 is a side view showing a cartridge.

FIG. 15 is a sectional view of the cartridge.

FIG. 16 is a plan view of the cartridge.

FIG. 17 is a perspective view showing an inner cartridge.

FIG. 18 is a partially enlarged view showing a hitting portion.

FIG. 19 is an explanatory diagram showing the feeding of sheet staples.

FIG. 20 is an explanatory diagram showing a state when the second feed lever is locked.

FIG. 21 (A) is an explanatory diagram showing a state in which staples are formed in a U-shape. FIG. 7B is an explanatory diagram showing a state in which staples have been ejected and have penetrated the binding sheet.

FIG. 22 is an explanatory view showing a conventional electric stapler.

[Explanation of symbols]

 200 Feed Mechanism 201 First Feed Lever (Feed Lever) 210 Second Feed Lever (Feed Lever) 220 Feed Plate Body 222D Feed Plate 222d Step (Abutment) 321 Driver 700 Cartridge 720 Ejection S S Seat Staple Sa Rear End S1, S2 staple

Claims (2)

[Claims] 1. A cartridge in which sheet staples are housed in a stack, a feeding mechanism for feeding the sheet staples from the cartridge to an ejection portion, and the staples of the fed sheet staples are reciprocally ejected from the ejection portion. An electric stapler including a driver, wherein the feeding mechanism has an abutting portion that abuts a rear end portion of the sheet staple accommodated in the cartridge, and is interlocked with a driving mechanism that reciprocates the driver. A moving unit that moves in the front-rear direction, and when the moving unit moves forward, an abutting portion of the moving unit contacts a rear end portion of the sheet staple to feed the sheet staple forward from the cartridge by a predetermined distance; When the staples cannot be moved a predetermined distance, the movement of the moving means to the front is stopped regardless of the driving of the driving mechanism. Electric stapler characterized in that which is way. 2. The moving means comprises a feed plate having the contact portion, and a feed lever for reciprocating the feed plate in the front-rear direction in conjunction with the drive mechanism, and the feed plate and the feed plate. The electric stapler according to claim 1, wherein a slip portion is provided between the lever and the lever, and when the sheet staple cannot move a predetermined distance, the slip portion slips to stop the forward movement of the feed plate.