JP3692880B2 - Electric stapler - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a sheet staple stored in a storage chamber is sent out to one end of a punching passage, the staple sent out to one end of the punching passage is formed into a U shape by a forming plate, and the staple formed in this U shape The present invention relates to an electric stapler that is driven by a driver from the other end of the punching passage.
[0002]
[Prior art]
Conventionally, a table on which a sheet bundle is placed, a main body on which a cartridge that stores sheet staples is mounted, a table driving mechanism that raises and lowers the table, a driver that drives staples into a sheet bundle from the ejection portion of the cartridge, An electric stapler provided with a clincher mechanism that clinches a leg portion of a staple that penetrates the sheet bundle is known.
[0003]
Such an electric stapler table drive mechanism and clincher mechanism have a table cam for raising and lowering the table and a clincher cam for clinching leg portions of the staples. The table drive mechanism has a link member that moves the table up and down by rotating the table cam, and the clincher mechanism has a clincher link that rotates the clincher by rotating the clincher cam.
[0004]
[Problems to be solved by the invention]
Thus, since the conventional electric stapler has the link member and the clincher link, there are problems such as a complicated structure and an increase in size.
[0005]
The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric stapler that can be reduced in size.
[0006]
[Means for Solving the Problems]
  In order to achieve the above object, a first aspect of the present invention provides a feeding means for feeding sheet staples stored in a storage chamber toward one end of a discharge path, a forming holder that reciprocates while holding a forming plate, and a driver. And a clincher body that moves forward and pinches the sheet bundle placed on the other end side of the ejection passage, and fed to one end of the ejection passage. Electric stapler for forming staples into a U-shape by the forward movement of the forming holder, and driving the staples formed into a U-shape by the forward movement of the driver holder toward the sheet bundle from the other end of the ejection path Because
  A link member that reciprocates by the reciprocating movement of the forming holder, and a fixing unit that fixes the clincher body at a position where the tip end portion sandwiches the sheet bundle,
  The clincher body includes a clincher that clinches leg portions of the staples that penetrate the sheet bundle,
  Clamping the sheet bundle by the clincher body, fixing the clincher body by the fixing means, clinching the staple leg by the clincher, releasing the fixing of the clincher body, and releasing the holding of the sheet bundleEach operationIt is performed by reciprocating rotation of the link member.
  In the invention of claim 2, the fixing means is used for reciprocating rotation of the link member.In conjunctionIt has a fixed plate that reciprocates, the clincher body is fixed by the forward movement of the fixed plate, and the fixed state is released by the backward movement of the fixed plate.
[0007]
  According to a third aspect of the present invention, the clincher body includes a clincher guide whose rear portion is pivotally supported by the main body and reciprocally rotated by reciprocal rotation of the link member, and a clincher arm whose rear portion is pivotally supported by the rear portion of the clincher guide. Have
  The electric stapler according to claim 1 or 2, wherein the clincher arm rotates relative to the clincher guide by reciprocating rotation of the link member to clinch the leg portion of the staple.
  According to a fourth aspect of the present invention, the clincher arm is disposed so as to overlap the clincher guide,
The fixing plate fixes the clincher guide.
  The invention of claim 5A spring for rotating and biasing the clincher body in a direction to sandwich the sheet bundle;
The link member holds the clincher body at a predetermined position against the urging force of the spring when the link member is located at an initial position, and releases the clincher body from the spring by releasing the clincher body during forward movement. The clincher body is held at a predetermined position against the urging force of the spring during the backward movement by rotating the urging force..
  According to a sixth aspect of the present invention, the clincher arm rotates by a predetermined angle relative to the clincher guide regardless of the rotation angle of the clincher guide when the sheet bundle is sandwiched. It is characterized by clinching the legs.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of an electric stapler according to the present invention will be described below with reference to the drawings.
[0009]
The electric stapler 1 shown in FIGS. 1 to 3 includes a stapler body 10 and a cartridge 600 that is detachably attached to the stapler body 10.
[0010]
The stapler main body 10 includes a punching mechanism 100 that punches the staple S from a punching passage 601 provided in the cartridge 600, a clincher mechanism 200 that bends the leading end portion of the staple that has been punched out, and sheet staples stacked in the cartridge 600. A delivery mechanism 300 that feeds ST to one end of the launch path 601, a drive mechanism 400 that drives each mechanism 100, 200, 300, and an anvil mechanism that pulls in an anvil, which will be described later, from the launch path 601 after forming a staple in a U-shape. 500.
[0011]
As shown in FIG. 3, the stapler main body 10 includes a main body case 13 in which a motor chamber 11 and a gear chamber 12 having a circular cross section are formed. Inner teeth 12 </ b> A are formed inside the gear chamber 12. . L-shaped grooves 14 and 14 are formed on both side surfaces 13A and 13A of the main body case 13 as shown in FIG. The front ends of the grooves 14 and 14 reach the front ends of the side surfaces 13A and 13A, and the front ends of the grooves 14 and 14 are opened. Similarly, the upper ends of the grooves 14 and 14 reach the upper ends of the side surfaces 13A and 13A, and the upper ends of the grooves 14 and 14 are opened. A clincher link 201 is attached to each groove 14 so as to be rotatable to a chain line position.
[0012]
As shown in FIG. 5, upper wall portions 16, 16 having a predetermined height and extending in the front-rear direction are formed on the upper portion of the main body case 13. Guide grooves 18 and 18 extending in the front-rear direction are formed, and guide protrusions 19 and 19 extending in the front-rear direction are formed in the upper portions inside the upper wall portions 16 and 16. A recess 21 is formed at the front end of the ceiling wall portion 20 of the main body case 13, and a notch 22 is formed at the center of the recess 21.
[0013]
Side plates 23, 23 are attached to both side surfaces 13 A, 13 A of the main body case 13, and a front plate 25 and a rear plate 26 are attached to the front surface and the rear surface of the main body case 13. Flat projections 27 and 27 having a predetermined width in the left-right direction are formed on the inner upper portions of the side plates 23 and 23 (see FIG. 32), and the upper ends of the side plates 23 and 23 are in contact with the inner side. Portions 28 and 28 are provided. In addition, a micro switch 29 for detecting when the clincher link 201 is located at a solid line position (see FIG. 4) is attached to one side plate 23. When the clincher link 201 is located at the solid line position, a forming holder 110 described later is located at the home position (position shown in FIG. 3).
[0014]
  Further, as shown in FIG. 3, a fixing spring 40 is attached to the rear side of the ceiling wall 20 of the main body case 13 by a screw N1. The fixing spring 40 has a trough portion 41 formed in a substantially V shape and a crest portion 42 formed in a hem shape behind the trough portion 41.
[Drive mechanism]
  As shown in FIG. 3, the drive mechanism 400 includes a drive gear 401 attached to the motor shaft Ma of the motor M, a first mid gear holder 420 attached to the drive shaft 410, and a first gear attached to the drive shaft 410. 2 mid gear holder 430, drive gear holder 440, driver cam 470, driver return cam 471,FoTeaming cam 472,FoArming return cam 473 and the like. The drive gear holder 440 and the cams 470 to 473 are mounted on the D-cut portion of the drive shaft 410 and rotate together with the drive shaft 410.
[0015]
Further, the motor M is disposed below the cartridge 600 so that the motor shaft Ma of the motor M faces the same direction as the sheet staple ST feeding direction of the cartridge 600 described later. Further, the motor shaft Ma and the drive shaft 410 are arranged on the same straight line.
[First mid gear holder]
As shown in FIG. 6, the first mid gear holder 420 has a disc 421, and a pair of shafts 422 and 422 are provided symmetrically with respect to the center of the disc 421 on one side surface of the disc 421. A shaft 424 is provided at the center of the other side surface of the disc 421. A gear 424A is formed around the shaft 424, and a hole 424B is formed in the shaft 424. Planetary gears 425 and 425 are rotatably mounted on the shafts 422 and 422 (see FIG. 3). The planetary gears 425 and 425 mesh with the internal teeth 12A of the gear chamber 12 and mesh with the drive gear 401. Yes. One end of the drive shaft 410 is inserted into the hole 424B of the shaft 424 of the first mid gear holder 420, and the one end is rotatably held. The other end of the drive shaft 410 is rotatably held on the front plate 25.
[Second mid gear holder]
As shown in FIG. 7, the second mid gear holder 430 has a disc 431, and on one side surface of the disc 431, there are three shafts 432 and three holding portions 433 having the same height as the shaft 432. Are provided along the periphery of the disk 431 alternately at equal intervals. A projection 432A having a smaller diameter than the shaft 432 is provided on the end surface of each shaft 432, and a circular projection 433A is provided on the end surface of each holding portion 433. In addition, a shaft 435 is formed on the other side surface of the disc 431, and a gear 435 </ b> A is formed around the shaft 435. A shaft hole 436 is formed through the shaft 435 and the disk 431. As shown in FIG. 3, a drive shaft 410 is inserted into the shaft hole 436, and a second mid gear holder 430 is rotatably attached to the drive shaft 410.
[0016]
A planetary gear 437 is rotatably mounted on each shaft 432 (see FIG. 3). The planetary gear 437 meshes with the internal teeth 12A of the gear chamber 12 and meshes with the gear 424A of the first mid gear holder 420. are doing.
[0017]
As shown in FIG. 8, a gear plate 450 is attached to each holding portion 433 of the second mid gear holder 430. As shown in FIG. 9, the gear plate 450 has a hole 451 formed in the center, and three small diameter holes 452 and three large diameter holes 453 formed alternately around the periphery of the hole 451. Yes. Each large diameter hole 453 is fitted with a protrusion 433A of each holding portion 433 of the second mid gear holder 430, and the gear plate 450 is attached to the holding portion 433 of the second mid gear holder 430.
[0018]
Further, each small diameter hole 452 of the gear plate 450 is fitted with a protrusion 432A of the shaft 432, so that one end of the shaft 432 is held in the small diameter hole 452 of the gear plate 450. That is, the strength of the shaft 432 is ensured by having both ends of each shaft 432 held by the disc 431 and the gear plate 450. The gear plate 450 is omitted in FIG.
[Drive gear holder]
The drive gear holder 440 has a disc 441 as shown in FIGS. On one side surface of the disc 441, three shafts 442 and three holding portions 443 having the same height as the shaft 442 are alternately provided along the periphery of the disc 441 at equal intervals. In FIG. 11, the shaft 442 and the holding portion 443 are omitted.
[0019]
A projection 442A having a smaller diameter than the shaft 442 is provided on the end surface of each shaft 442, and a circular projection 443A is provided on the end surface of each holding portion 443. A planetary gear 444 is rotatably mounted on each shaft 442, and the planetary gear 444 meshes with the internal teeth 12 </ b> A of the gear chamber 12 and meshes with the gear 435 </ b> A of the second mid gear holder 430.
[0020]
A gear plate 450 shown in FIG. 9 is attached to each holding portion 443 of the drive gear holder 440 similarly to the second mid gear holder 430, and the strength of the shaft 442 is secured by the gear plate 450. The gear plate 450 is omitted in FIG.
[0021]
Further, an arc-shaped cutout 445 extending along the circumferential direction and having a predetermined width is formed at the peripheral end of the disc 441. An inclined surface 446 extending along the circumferential direction and extending from one side surface of the disk 441 to the other side surface is formed at the peripheral end, and the inclined surface 446 has the same width as the notch 445 and is continuously formed in the notch 445. ing. A shaft hole 447 is formed at the center of the disc 441, and a hole 448 is formed between the shaft hole 447 and the peripheral end on the other side of the disc 441. A drive shaft 410 passes through the shaft hole 447 of the disc 441.
[0022]
When the motor shaft Ma of the motor M rotates, the drive gear holder 440 rotates through the planetary gears 425, 437, 444 and the first and second mid gear holders 420, 430. The drive shaft 410 is rotated by the rotation of the drive gear holder 440. The planetary gears 425, 437, 444 and the gears 424A, 434A of the first and second mid gear holders 420, 430 constitute a reduction gear. Each planetary gear 425, 437, 444 is in a state of being arranged around the drive shaft 410.
[Punching mechanism]
As shown in FIGS. 14 to 17, the launch mechanism 100 includes a driver holder 101, a driver 102 attached to the driver holder 101, a forming holder 110, and forming plates 111 and 112 attached to the forming holder 110. And have.
[Driver holder]
As shown in FIGS. 14 and 15, the driver holder 101 has a substantially rectangular plate 104 in which a long hole 103 extending in the vertical direction is formed. On one side surface of the plate 104, a pair of protrusions 105 is formed at a position above the long hole 103 and sandwiching the long hole 103. Further, abutting portions 106 and 107 projecting to the other side surface are formed at the upper and lower ends of the plate 104, and the abutting portion 107 projects from the abutting portion 106 by a predetermined length.
[driver]
The driver 102 is formed in a rectangular shape extending in the vertical direction, and a long hole 102 </ b> A having the same size as the long hole 103 of the driver holder 101 is formed below the driver 102. A pair of holes 102B are provided at positions above the long holes 102A and sandwiching the long holes 102A. A protrusion 105 of the driver holder 101 is fitted into the hole 102 </ b> B, and the driver 102 is attached to the driver holder 101.
[0023]
  The drive shaft 410 is inserted into the long holes 103 and 102A of the driver holder 101 and the driver 102, and the driver holder 101 and the driver 102 can move up and down with respect to the drive shaft 410 through the long holes 103 and 102A. . Further, as shown in FIG. 15, a driver cam 470 and a driver return cam 471 mounted on the drive shaft 410 are disposed between the contact portions 106 and 107 of the driver holder 101 via a spacer 108. The cam 470 contacts the contact portions 106 and 107, and the driver return cam 471 contacts only the contact portion 107. The driver holder 101 is raised by the rotation of the driver cam 470, and the driver holder 101 is lowered by the rotation of the driver return cam 471.
[Forming holder]
  As shown in FIGS. 16 and 17, the forming holder 110 has a long hole extending in the vertical direction.110AA substantially rectangular plate 113 is formed. A notch 114 is formed at substantially the center of the left and right side edges of the plate 113, and a pair of protrusions 115, 115 are provided on the upper right and lower sides of one side surface of the plate 113. Is provided with a pair of protrusions 116, 116. In addition, the upper and lower ends of the plate 113 are formed with contact portions 117 and 118 protruding to the other side surface, and the contact portion 117 protrudes from the contact portion 118 by a predetermined length.
[Forming plate]
  The forming plate 111 is formed by forming a forming plate portion 111F narrower than the substrate portion 111A on the left side of the rectangular substrate portion 111A, and a pair of holes 111B are formed on the substrate portion 111A. ing. Similarly, the forming plate 112 is formed by forming a forming plate portion 112F having a narrower width than the substrate portion 112A on the rectangular substrate portion 112A toward the right side. The substrate portion 112A has a pair of holes 112B in the vertical direction. Is formed.
[0024]
These forming plates 111 and 112 are attached to the forming holder 110 by inserting the projections 115 and 116 of the forming holder 110 into the holes 111B and 112B.
[0025]
A drive shaft 410 is inserted into the elongated hole 110A of the forming holder 110, and the forming holder 110 can move up and down with respect to the drive shaft 410 through the elongated hole 110A. Further, as shown in FIG. 17, a forming cam 472 and a forming return cam 473 mounted on the drive shaft 410 are arranged between the contact portions 117 and 118 of the forming holder 110, and the forming return cam 473 is in contact with the forming holder 110. The forming cam 472 comes into contact with only the contact portion 117. The forming holder 110 is raised by the rotation of the forming cam 472, and the forming holder 110 is lowered by the rotation of the forming return cam 473.
[0026]
The tip portion 201A of the clincher link 201 is inserted into the notch 114 of the forming holder 110, and the forming holder 110 moves up and down, whereby the clincher link 201 reciprocates between the solid line position and the chain line position (see FIG. 4). It comes to move.
[0027]
As shown in FIG. 18, the driver holder 101 and the forming holder 110 are mounted on the drive shaft 410 so as to be back-to-back with each other, and the driver 102 is positioned between the forming plates 111F and 112F. The forming plates 111F and 112F enter the punching path 601 when the forming holder 110 is raised to form a staple in a U shape, and the driver 102 enters the punching path 601 when the driver holder 101 is raised and is formed into a U shape. The staple stapled is ejected from the ejection path 601.
[Anvil mechanism]
As shown in FIG. 19, the anvil mechanism 500 is disposed at the front end portion of the ceiling wall 20 of the main body case 13 and is attached to the front plate 25 via the front bent portion of the side plate 23, and the anvil plate 501. The anvil 510 held on the anvil plate 501, the leaf spring 520 attached to the anvil plate 501, and the like.
[Anvil plate]
As shown in FIG. 20, the anvil plate 501 is composed of a rectangular plate portion in which a rectangular opening 502 is formed at the center. A holding portion 503 extending rearward is formed at the lower portion of the opening 502, and a concave portion 504 is formed at the lower end of the anvil plate 501. Further, screw holes 505 are formed on both left and right ends of the plate portion 502, and the anvil plate 501 is fixed to the front plate 25 by screws (not shown) that are passed through the screw holes 506.
[0028]
A leaf spring 520 is attached to the front surface of the anvil plate 501. A bent portion 521 bent forward is formed at the lower portion of the leaf spring 520, and the upper portion of the leaf spring 520 is fixed to the upper portion of the anvil plate 501. The leaf spring 520 is curved so as to protrude slightly forward.
[0029]
An anvil 510 is disposed in the opening 502 of the anvil plate 501 so as to be movable in the front-rear direction and is mounted on the holding portion 503.
[Anvil]
As shown in FIG. 21, the anvil 510 includes a base portion 511 extending in the left-right direction, an anvil portion 512 extending rearward from both ends of the base portion 511, and a protruding portion 513 protruding forward from the center portion of the base portion 511. Have. A head portion 513A and a constricted portion 513B are formed in the projecting portion 513, the constricted portion 513B penetrates the leaf spring 520, and the head portion 513A projects to the front side of the leaf spring 520. The anvil 510 is fixed to the leaf spring 520 by the head 513A.
[0030]
  As shown in FIGS. 21 and 27, the front end portion 512A of the anvil portion 512 enters the launch passage 601 through a notch 645 of a guide plate 643 of the cartridge 600 described later. The plate spring 520 is bent as shown in FIGS. 23 and 24 when the forming holder 110 rises and pushes the bent portion 521 of the plate spring 520. Due to this bending, the anvil 510 moves forward, and the front end portion 512 </ b> A of the anvil portion 512 retreats from the ejection passage 601 of the cartridge 600.
[Sending mechanism]
  25 to 27, the delivery mechanism 300 includes a disc 441 of the drive gear holder 440, a slider 301 attached to the front side of the upper surface of the ceiling wall 20 of the main body case 13 so as to be movable in the front-rear direction, It comprises a spring 320 that biases the slider 301 forward, a feeding claw plate 330 attached to the slider 301, and the like. The spring 320 is attached to the upper wall portion 16 of the main body case 13, and this spring 320 is the wing portion 310 (see FIG.27(See below).
[Slider]
  As shown in FIGS. 28 and 29, the slider 301 has a flat base portion 302, and wing portions 310 extending in the front-rear direction are formed at both ends of the base portion 302. The wing part 310 has an inclined part 311 inclined downward and a horizontal part 312 extending horizontally from the lower part of the inclined part 311.
[0031]
A concave portion 304 is formed at the front end of the base portion 302, and an end surface 304A of the concave portion 304 is an inclined surface inclined forward. A protrusion 305 is provided on the back surface of the base portion 302. A slit hole 306 penetrating in the front-rear direction is formed in the protrusion 305. The lower surface of the protrusion 305 is an arc-shaped recess 305A.
[0032]
  Further, a recess 307 having a predetermined width extending rearward from the front end position of the protrusion 305 is formed on the back surface of the base 302, and the recess 307 is formed as the front portion 307A of the recess 307 facing the protrusion 305 moves forward. The depth of is shallower. A flat mounting surface 307B having a shallow depth is formed at the rear portion of the recess 307.307BA screw hole 307c is formed on the surface. This mounting surface307BThe nail feed plate 330 has screwsN ThreeIt is fixed by.
[0033]
  The feeding plate 330 has a fixing portion 332 attached to the mounting surface of the slider 301 by a screw N3.307BThe slider 301 is fixed to the slider 301. The elastic portion 333 of the claw feeding plate 330 is passed through the slit hole 306 of the projection 305 of the slider 301, the claw 334 is in contact with the end surface 304 A of the slide 301, and the tip portion 334 A of the claw 334 is the base portion of the slide 301. It protrudes from the upper surface of 302.
[0034]
As shown in FIG. 26, the slider 301 to which the feed plate 330 is attached has the horizontal portion 312 of the wing portion 310 inserted into the guide groove 18 of the main body case 13, and the protrusion 305 of the base portion 302 is notched in the notch of the main body case 13. The main body case 13 is attached to the upper surface of the ceiling wall 20. The slider 301 moves in the front-rear direction as the horizontal portion 312 of the wing portion 310 is guided by the guide groove 18 of the main body case 13.
[0035]
  Further, the slider 301 is biased forward by the spring 320, but when the forming holder 110 is located at the home position, the protrusion 305 of the slider 301 abuts on the disc 441 of the drive gear holder 440, and FIG. It is stopped at the position shown in. At this time, the edge 22 a of the notch 22 in the ceiling wall 20 of the main body case 13 presses the elastic portion 333 of the claw feeding plate 330. The elastic portion 333 is pressed by this pressing.Part ofIs the base portion 302 of the slider 301.DepressionThe tip 334 A of the claw 334 of the feed plate 330 is drawn from the upper surface of the base portion 302 of the slider 301.
[0036]
When the drive gear holder 440 rotates and the notch 445 of the disk 441 reaches a predetermined position, the slider 301 enters the notch 445. That is, the slider 301 moves forward. When the slider 301 moves forward, the pressing of the elastic portion 333 of the claw plate 330 by the edge 22a of the notch 22 of the ceiling wall 20 of the main body case 13 is released, as shown in FIG. The front end portion 334A of the claw 334 protrudes from the upper surface of the base portion 302 of the slide 301 and feeds the sheet staple ST forward.
[0037]
  As the drive gear holder 440 further rotates, the inclined surface 446 of the disc 441 contacts the front surface of the protrusion 305 of the slider 301, and the inclined surface 446 attaches the slider 301 to the spring with the rotation of the drive gear holder 440. Push back against the forces. In this way, the slider 301 isDisc 441The reciprocating motion makes one reciprocation back and forth.
[0038]
The clincher guide 210 is rotatable by a shaft 31 attached between the side plates 23 and 23 being inserted into the shaft hole 213 of the side plate portion 212. A shaft 32 is attached between the shaft holes 214 and 214 of the side plate portions 212 and 212, and both ends of the shaft 33 are inserted into the long holes 215 and 215 of the side plate portions 212 and 212. The shaft 33 is movable along the long hole 215.
[Clincher arm]
As shown in FIG. 36, the clincher arm 220 has side plate portions 222 formed on both sides of a flat base portion 221. The rear portion 222A of the side plate portion 222 is formed with a high height and protrudes rearward from the rear end of the base portion 221. Shaft holes 223 and 224 facing the shaft holes 213 and 214 of the clincher guide 210 are formed on the rear end side of the rear portion 222A, and a long hole facing the slot 215 of the clincher guide 210 is formed on the front side of the rear portion 222A. 225 is formed. The diameter of the shaft hole 224 is set larger than the shaft hole 214 of the clincher guide 210, and the long hole 225 is inclined with respect to the horizontal direction from the long hole 215 of the clincher guide 210.
[0039]
In addition, a clincher portion 226 that protrudes forward is formed at the center of the front end of the base portion 211, and the lower surface of the clincher portion 226 is positioned in a horizontal direction at a position corresponding to the concave portion 218 of the clincher guide 210 (FIG. 36B). A groove 227 extending in the vertical direction in FIG.
[0040]
As shown in FIG. 37, the clincher arm 220 is disposed between the side plate portions 212 and 212 of the clincher guide 210, the shaft 31 is inserted into the shaft hole 223 of the clincher arm 220, and the shaft hole 224 has a shaft. 32 is loosely fitted. Further, the shaft 33 of the clincher guide 210 passes through the long hole 225 of the clincher arm 220, and the shaft 33 can move along the long hole 225. Since the long hole 225 is inclined with respect to the long hole 215, when the shaft 33 moves along the long hole 215, the clincher arm 220 moves by a predetermined angle around the shaft 31 with respect to the clincher guide 210 as shown in FIG. 38. Rotate.
[0041]
As shown in FIGS. 39 and 40, a pair of springs 228 are provided between the shaft 33 and the shaft 32, and the shaft 33 is urged rearward by the springs 228.
[Lock mechanism]
As shown in FIGS. 40 to 42, the lock mechanism 250 moves the fixed plates 251 and 251 disposed on the outer sides of the side plate portions 212 and 212 of the clincher guide 210 and the fixed plates 251 and 251 rearward. And a spring 260 for the purpose.
[0042]
Each fixing plate 251 has a slit-like hole 252 extending in the front-rear direction. The lower surface 253 of the fixed plate 251 is inclined upward toward the rear. A recess 254 that engages the shaft 32 is formed at an intermediate position of the lower surface 253, and the length of the inclined surface 253A on the front side of the recess 254 is L1. A hole 255 is formed behind the hole 252 of the fixed plate 251.
[0043]
A protrusion 27 of the side plate 23 is inserted into the hole 252 of the fixed plate 251 so that the fixed plate 251 can move in the front-rear direction with respect to the side plate 23. Since the protrusion 27 has a flat plate shape and the hole 252 has a slit shape, the fixing plate 251 moves in the front-rear direction while maintaining a horizontal state.
[0044]
The spring 260 is wound around the shaft 31, one end 260 </ b> A of the spring 260 is locked to a shaft 34 described later, and the other end 260 </ b> B is locked to the shaft 32. The spring 260 urges the shaft 32 and the shaft 34 in an opening direction. This urging force urges the shaft 34, that is, the fixed plate 251 backward, and causes the clincher guide 210 and the clincher arm 220 to move the shaft 31. It is energized counterclockwise around the center.
[0045]
When the clincher link 201 is located at the position shown in FIG. 32, that is, when the driver holder 101 and the forming holder 110 are located at the home position, the shaft 32 engages with the concave portion 254 of the fixed plate 251 and the clincher. It contacts the support surface 203A of the link 201. Further, the shaft 33 comes into contact with the contact surface 202A of the clincher link 201. For this reason, the fixed plate 251 is positioned at the position shown in FIG. 32 and does not move backward regardless of the urging force of the spring 260 because the shaft 32 is engaged with the recess 254. Further, the clincher guide 210 and the clincher arm 220 are positioned at the positions shown in FIG. 32 regardless of the urging force of the spring 260 and do not rotate counterclockwise because the shaft 32 is in contact with the support surface 203A. become.
[0046]
Further, when the clincher link 201 rotates to the position shown in FIG. 53, the clincher arm 220 and the clincher guide 210 are separated from the contact surface 202A of the clincher link 201 and the shaft 32 is separated from the support surface 203A of the clincher link 201. The spring 260 is turned and rotated counterclockwise about the shaft 31 by the urging force of the spring 260.
[0047]
  As shown in FIG. 53, when the clincher guide 210 and the clincher arm 220 are rotated to the position shown in FIG. 53 by the urging force of the spring 260, the lock mechanism 250 moves the fixing plate 251 backward by the urging force of the spring 260. Then, the shaft 32 attached to the clincher guide 210 is brought into contact with the inclined surface 253A of the fixed plate 251. As a result, even if a strong upward force is applied to the tip of the clincher guide 210 when the staple is ejected, the clincher guide 210 causes the shaft 31 to be in contact with the inclined surface 253A of the fixed plate 251. It is prevented from rotating clockwise around the center. This is because the fixing plate 251 does not rotate around the shaft 34 due to the projection 27 of the side plate 23 of the stapler body 10 being inserted into the hole 252, so the clincher guide 210 is moved by the fixing plate 251. It will not rotate clockwise. That is, the clincher guide 210 is locked at the position shown in FIG.
[Release mechanism]
  The release mechanism 270 includes a pair of clincher links 201, a pair of first link plates 271 extending in the front-rear direction, a pair of substantially triangular second link plates 280, and the like.
[First link plate]
  A long hole 272 into which the shaft 33 is inserted is formed obliquely with respect to the longitudinal direction at the distal end portion of the first link plate 271, and a shaft hole 273 is formed at the rear portion. As shown in FIGS. 40 and 41, the shaft holes 273 and 273 of the first link plates 271 and 271 are inserted into both ends of the shaft 35, and the shaft 35 is attached to the first link plates 271 and 271. It has been.
[Second link plate]
  The second link plate 280 has a shaft hole 281 formed in the lower part, a shaft hole 282 formed in the front side of the intermediate part, and a long shaft hole 283 formed in the upper part and extending vertically. . The distance L2 (not shown) between the shaft hole 281 and the shaft hole 283 is set to about twice the distance L3 (not shown) between the shaft hole 281 and the shaft hole 282. Then, as shown in FIG. 41 and FIG. 42, the shaft 31 is inserted into the shaft hole 281, and the secondLink plate 280Is pivotable about a shaft 31. Further, both end portions of the shaft 35 are inserted into the shaft holes 282 and 282, and the shaft 34 is inserted into the shaft holes 283 and 283. The shaft 34 can move up and down relatively in the shaft holes 283 and 283.
[0048]
59, when the clincher link 201 rotates counterclockwise from the position shown in FIG. 59, the contact surface 202B of the clincher link 201 pushes the shaft 33 forward, and the first link plate 271 moves forward together with the shaft 33. The second link plate 280 is rotated about the shaft 31, and the fixed plate 251 is moved forward via the shaft 34 by the rotation of the second link plate 280. The clincher guide 210 is unlocked by the forward movement of the fixing plate 251.
[cartridge]
As shown in FIG. 43, the cartridge 600 includes a cartridge main body 602 and a leaf spring body 650 detachably mounted in the cartridge main body 602.
[Cartridge body]
44 and 45, the cartridge main body 602 has a bottom wall 610, side walls 620 and 620, a top wall 630, a front end wall 640, and the like that form a storage chamber 603 in which the sheet staples ST are stacked and stored. are doing. When the cartridge 600 is mounted on the stapler body 10, the upper surface of the top wall 630 and the upper end surface 25A of the front plate 25 of the stapler body 10 are flush with each other. As shown in FIG. Reference numeral 630 denotes a placement surface on which the sheet bundle P is placed.
[0049]
Further, the rear end of the cartridge body 602 is opened to form an opening 604. An opening 611 having a predetermined width shorter than the length of the staple S and a predetermined length in the front-rear direction is formed on the front portion of the bottom wall 610, and a protrusion 612 protruding downward is formed on the lower surface of the rear portion of the bottom wall 610. Has been. A recess 613 is formed on the upper surface of the rear portion of the bottom wall 610.
[0050]
A guide groove 621 extending in the front-rear direction is formed on the outer surface of each side wall 620, and a handle portion 622 protruding sideways is provided at the rear portion of each side wall 620. A hole 631 is formed in the rear portion of the top wall 630, and a gap SK is formed between the lower surface 641 of the front end wall 640 and the upper surface 610 </ b> A of the bottom wall 610. The height of the gap SK is set to be substantially the same as the thickness of the sheet staple ST.
[0051]
  A guide wall 643 is provided in front of the front end wall 640, and a launch passage 601 is formed between the guide wall 643 and the front end wall 640. The upper end (one end) of the launch passage 601 is in a state of penetrating the top wall 630. A recess 644 is formed on the lower surface of the guide wall 643, and the height position of the upper surface 644A of the recess 644 is substantially the same as the height position of the upper surface 610A of the bottom wall 610. This recess644A pair of notches 645 and 645 are formed inside.
[0052]
A notch 652 having a predetermined width and depth is formed in the center of the front end of the bottom plate portion 651, and a pair of elastic leg portions 653 are formed on both sides of the notch 652, and the leg portion 653 has a diagonally upper portion at the tip. A check claw 654 that protrudes in the direction is formed. A locking portion 655 that is bent in a V shape is formed at the rear portion of the bottom plate portion 651. An opening 661 is formed in the middle portion of the upright portion 660.
[0053]
The front portion of the top plate portion 670 is curved to form a leaf spring portion 671. A concave portion 672 is formed at the center of the front end of the leaf spring portion 671, and both sides of the recessed portion 672 are connected to a pair of leg portions 673. Has been. The tip 673A of the leg 673 is bent upward and is in contact with the leg 653 of the bottom plate 651. Further, a substantially triangular opening 674 is formed in the leaf spring portion 671 so that the elasticity of the leaf spring portion 671 can be further obtained. The rear portion 675 of the top plate portion 670 is provided with a U-shaped cut 676, and a portion surrounded by the cut 676 is a leaf spring portion 677. The leaf spring portion 677 is curved, and the rear end portion 677A is bent upward and is in contact with the bottom plate portion 651. The leaf spring portion 671 and the leaf spring portion 677 constitute a leaf spring.
[0054]
In addition, a handle portion 678 bent in a U-shape is formed at the rear portion of the top plate portion 670, and the handle portion 678 protrudes rearward from the standing portion 660.
[0055]
In order to store the stacked sheet staples ST in the cartridge main body 602, first, as shown in FIG. 47, the sheet staples ST are stacked on the bottom plate portion 651 of the leaf spring body 650, and the stacked sheet staples ST are stored in the bottom plate portion. 651 and leaf springs 671 and 677 are sandwiched. Then, the leaf spring body 650 is inserted through the opening 604 at the rear portion of the cartridge main body 602 together with the sheet staple ST laminated. When the leaf spring body 650 is inserted to a predetermined position of the cartridge body 602, the locking portion 655 of the leaf spring body 650 and the top portion 678 A of the handle portion 678 are connected to the recess 613 of the bottom wall 610 of the cartridge body 602 and the top wall 630. The leaf spring body 650 is fixed to the storage chamber 603 of the cartridge main body 602 by engaging with the holes 631.
[0056]
The cartridge 600 containing the sheet staple ST is inserted from the direction of the arrow and attached to the stapler body 10 as shown in FIG. At the time of mounting, the guide protrusion 19 of the upper wall 16 of the main body case 13 is engaged with the guide groove 621 of the side wall 620 of the cartridge main body 602. Then, the cartridge 600 is inserted forward and attached. When the cartridge 600 is mounted on the staple body 10, the protrusion 612 of the cartridge body 602 engages with the valley 41 of the fixing spring 40 of the body case 13 as shown in FIG. Fixed. Further, the slider 301 attached to the main body case 13 enters the opening 611 of the cartridge main body 602.
[Electric stapler operation]
Next, the operation of the electric stapler 1 configured as described above will be described with reference to the time chart shown in FIG.
[0057]
First, the cartridge 600 containing the stacked sheet staples ST is mounted in advance on the stapler body 10 as shown in FIG. When the motor M is not driven, the driver holder 101 and the forming holder 110 are located at the home position shown in FIG. Further, as shown in FIGS. 27 and 30, the slider 301 is stopped at the position shown in FIG. 30 with the protrusion 305 of the slider 301 coming into contact with the disc 441 of the drive gear holder 440. Further, as shown in FIGS. 21 and 22, the front end portion 512 </ b> A of the anvil 510 enters the ejection passage 601 through the notch 645 of the guide plate 643 of the cartridge 600.
[0058]
When the motor M is driven by a spelling signal from a fax or printer (not shown), the drive shaft 410 rotates clockwise in FIG. 4 via the drive gear 401, the planetary gears 425, 437, 444, the gears 424A, 435A, and the like. The cams 470 to 473 and the drive gear holder 440 rotate together with the drive shaft 410.
[0059]
When the notch 445 of the disc 441 of the drive gear holder 440 reaches the position shown in FIG. 49 due to the rotation of the drive gear holder 440, the protrusion 305 of the slider 301 is detached from the disc 441 of the drive gear holder 440. Due to the force, the slider 301 moves forward and enters the notch 445. When the slider 301 moves forward, as shown in FIG. 31, the leading end portion 334 A of the claw 334 of the feeding claw plate 330 protrudes from the upper surface of the base portion 302 of the slide 301, and is the lowermost sheet staple stored in the cartridge 600. ST is sent forward (time T1 in FIG. 48).
[0060]
The sheet staple ST is sent out by the forward movement of the slider 301 until the leading staple S1 contacts the lower portion of the guide wall 643 of the cartridge 600 as shown in FIG. The leading staple S 1 in contact with the lower portion of the guide wall 643 is positioned at one end of the ejection passage 601. Further, as shown in FIG. 22, the staple S1 is in contact with the lower surface of the front end portion 512A of the anvil 510.
[0061]
Then, the forming holder 110 is raised by the rotation of the forming cam 472, and as a result, the forming plates 111 and 112 start to form the staple S1 into a U-shape as shown in FIG. 50 (time point T2). Further, when the drive gear holder 440 further rotates, the inclined surface 446 of the disk 441 comes into contact with the front surface of the protrusion 305 of the slider 301, and the inclined surface 446 causes the slider 301 to move to the spring as the drive gear holder 440 rotates. The slider 301 is moved rearward against the urging force and pushed backward (time point T3).
[0062]
When the slider 301 moves backward, the sheet staple ST is also pushed back, but the sheet staple ST is prevented from being pushed backward by the check pawl 654 of the leaf spring body 650 of the cartridge 600. Is done.
[0063]
On the other hand, as the forming holder 110 is raised, the clincher link 201 is rotated from the position (home position) shown in FIGS. 51 and 52 to the position shown in FIGS. 53 and 54 (time point T4). By this rotation, the shaft 33 is detached from the contact surface 202A of the clincher link 201, and the shaft 32 is detached from the support surface 203A of the clincher link 201. Thereby, the clincher guide 210 rotates counterclockwise around the shaft 31 by the urging force of the spring 260 together with the clincher arm 220.
[0064]
When the clincher guide 210 is rotated to the position shown in FIGS. 53 and 54, the sheet bundle P placed on the top wall 630 of the cartridge 600 is clamped as shown in FIG. 3 (time point T5). On the other hand, the rotation of the clincher guide 210 and the clincher arm 220 causes the shaft 32 of the clincher guide 210 to be disengaged from the recess 254 of the fixed plate 251, and as a result, the fixed plate 251 moves rearward by the urging force of the spring 260. By this movement, the inclined surface 253A of the fixed plate 251 contacts the shaft 32 and stops at the position shown in FIG. The clincher guide 210 is locked at the position shown in FIG. 53 by the fixing plate 251 (time point T5).
[0065]
When the forming holder 110 is raised to the position shown in FIG. 23, the bent portion 521 of the leaf spring 520 is pushed upward by the forming holder 110, and the leaf spring 520 is bent as shown in FIGS. To go. Due to this bending, the anvil 510 moves forward, and the front end portion 512A of the anvil portion 512 retreats from the ejection passage 601 of the cartridge 600 (time T6). At this time, the forming holder 110 has reached top dead center, and the U-shaped forming of the staple S1 has been completed.
[0066]
Thereafter, the rotation of the driver cam 470 causes the driver holder 101 to rise, and the driver 102 pushes the staple S1 formed in a U-shape into the ejection path 601 and ejects the staple S1 from the other end of the ejection path 601. (Time T7). The staple S1 is punched from the other end of the punching passage 601 and its both leg portions Sa penetrate the sheet bundle P. Then, as shown in FIG. 55, the tip end portions Sb of both leg portions Sa penetrating the sheet bundle P enter the recesses 218 of the clincher guide 210, and further, the tip end portions Sb of both leg portions Sa as the driver holder 101 rises. Are guided by the inclined surface 218A of the concave portion 218, and both leg portions Sa are bent inward, and the tip end portion Sb enters the groove 227 of the clincher arm 220 as shown in FIG.
[0067]
When the driver holder 101 reaches the top dead center, the staple S1 is completely driven out from the other end of the driving passage 601 (time point T8), and the leading ends Sb of both the leg portions Sa of the staple S1 enter the grooves 227 of the clincher arm 220. As shown in FIG. 55, the both leg portions Sa are further bent inward.
[0068]
By the way, when the staple S1 is driven out from the other end of the driving path 601, a large force is applied to the tip of the clincher guide 210. However, since the clincher guide 210 is locked by the fixing plate 251, it rotates clockwise. Is prevented. Further, by reducing the angle of the inclined surface 253A of the fixed plate 251 with respect to the horizontal, the clincher guide 210 can be reliably locked by the spring 260 having a small urging force.
[0069]
By reducing the urging force of the spring 260, the size of the spring 260 can be reduced, and the tip of the clincher guide 210 collides with the sheet bundle P when the spring of the spring 260 is released. The impact sound at can be reduced.
[0070]
  When the staple S1 is completely ejected from the ejection path 601,FoThe forming holder 110 is lowered by the rotation of the forming return cam 473 (time T9). By the lowering of the forming holder 110, the push-up of the bent portion 521 of the leaf spring 520 by the forming holder 110 is released. As shown in FIGS. 21 and 22, the release causes the anvil 510 to move rearward by the urging force of the leaf spring 520, and the front end portion 512A of the anvil portion 512 is driven through the notch 645 of the guide plate 643 of the cartridge 600. The vehicle enters until just before the passage 601 (time T10).
[0071]
Further, as the forming holder 110 is lowered, the clincher link 201 is rotated counterclockwise from the position shown in FIGS. 53 and 54. With this rotation, the contact surface 202B of the clincher link 201 pushes the shaft 33 forward. As a result, the shaft 33 moves forward along the elongated hole 215 of the clincher guide 210, and the clincher arm 220 rotates about the shaft 31 with respect to the clincher guide 210 as the shaft 33 moves forward. To go. When the clincher link 201 rotates to the position shown in FIGS. 38 and 59, the clincher arm 220 rotates to the position shown in FIGS. 38 and 59 with respect to the clincher guide 210 (time T11).
[0072]
As the clincher arm 220 rotates, the clincher portion 226 descends, and the leg portions Sa of the staple S1 entering the groove 227 of the clincher portion 226 are bent as shown in FIG. As described above, since both the leg portions Sa of the staple S1 are bent by the lowering of the clincher portion 226 of the clincher arm 220, both the leg portions Sa can be flattened. Further, since both the leg portions Sa of the staple S1 are bent by the rotation of the clincher arm 220, the configuration of the clincher mechanism 200 is simple.
[0073]
When the clincher link 201 is rotated counterclockwise from the position shown in FIGS. 58 and 59 by the lowering of the forming holder 110 (time T13), the contact surface of the clincher link 201 is contacted. 202B pushes the shaft 33 further forward. As a result, the shaft 33 moves further forward along the elongated hole 215 of the clincher guide 210. By this movement, the clincher arm 220 is held at the position shown in FIGS. 38 and 59 during the period between the time points T11 and T12, and both the leg portions Sa of the staple S1 are surely bent into a flat shape.
[0074]
Further, when the shaft 33 moves forward, the first link plate 271 moves forward together with the shaft 33 to rotate the second link plate 280 about the shaft 31. By the rotation of the second link plate 280, the fixed plate 251 moves forward via the shaft 34, and the lock of the clincher guide 210 is released (time T12).
[0075]
When the clincher link 201 rotates to the position shown in FIGS. 61 and 62, the shaft 32 of the clincher guide 210 abuts on the support surface 203A of the clincher link 201. Further, the driver holder 101 starts to descend due to the rotation of the driver return cam 471 (time T13).
[0076]
When the clincher link 201 rotates counterclockwise to the position shown in FIGS. 63 and 64 as the forming holder 110 is lowered, the contact surface 202B of the clincher link 201 further pushes the shaft 33 forward, The first link plate 271 is moved to the position shown in FIG. 63 (time point T14). The amount of forward movement of the first link plate 271 is such that the distance L2 between the shaft hole 281 and the shaft hole 283 is set to approximately twice the distance L3 between the shaft hole 281 and the shaft hole 282. Thus, the amount of movement of the first link plate 271 is approximately twice. For this reason, even if the first link plate 271 is slightly moved, the fixed plate 251 can be moved greatly, and the lock of the clincher guide 210 can be reliably released.
[0077]
On the other hand, when the clincher link 201 rotates to the position shown in FIGS. 63 and 64, the support surface 203 </ b> A of the clincher link 201 pushes up the shaft 32, so that the clincher guide 210 and the clincher arm 220 together with the spring 260. It rotates clockwise around the shaft 31 against the urging force. Since the urging force of the spring 260 may be small, the load on the motor M at this time is small.
[0078]
When the driver 102 is lowered to a predetermined position as the driver holder 101 is lowered, the front end portion 512A of the anvil portion 512 enters the launch passage 601 (time T14a).
[0079]
Next, when the forming holder 110 is lowered to the home position (time T15), the driver holder 101 is also lowered to the position shown in FIG. 3, and the clincher link 201 is rotated to the position shown in FIGS. When the clincher link 201 comes to the position shown in FIGS. 51 and 52, the shaft 33 is detached from the contact surface 202B of the clincher link 201. For this reason, the shaft 33 moves rearward along the elongated hole 215 of the clincher guide 210 by the biasing force of the spring 228. The movement of the shaft 33 causes the clincher arm 220 to rotate clockwise around the shaft 31 with respect to the clincher guide 210 and move to the position shown in FIG.
[0080]
Further, the shaft 32 attached to the clincher guide 210 engages with the concave portion 254 of the fixed plate 251, and the shaft 33 contacts the contact surface 202 </ b> A of the clincher link 201 by the urging force of the spring 260. Then, the microswitch 29 detects the clincher link 201 at the position shown in FIGS. 51 and 52, and the drive of the motor M is stopped.
[0081]
According to the electric stapler 1 of this embodiment, the pair of clincher links 201 are reciprocally rotated by one rotation of the drive shaft 410, that is, by one reciprocation of the forming holder 110, and the pair of clincher links 201 are reciprocally rotated. The clincher guide 210 clamps the sheet bundle P, the fixing plate 251 fixes the clincher guide 210, the clincher arm 220 clinches the legs of the staple S, the clincher guide 210 is unfixed, and the sheet bundle P. Therefore, there is no need to provide a dedicated link member for each, and therefore the structure becomes simple, and the stapler body 10 can be reduced in size and weight.
[0082]
Further, since both the leg portions Sa of the staple S1 are clinched by the rotation of the clincher arm 220, a type of clinching mechanism in which a pair of rotating members are provided on the left and right and the clinch is performed by the rotation of the rotating members. In comparison, the structure is extremely simple, and therefore the stapler body 10 can be further reduced in size and weight.
[0083]
When the sheet bundle P is thick, as shown in FIG. 65, the amount of rotation of the clincher guide 210 is smaller than that in FIG. 53. At this time, the shaft 32 of the clincher guide 210 is inclined with respect to the inclined surface of the fixed plate 251. The length L1 of the inclined surface 253A is set so as to contact the right end (in FIG. 65) of 253A. For this reason, when an upward force is applied to the distal end portion of the clincher guide 210 by driving out the staple S, the shaft 32 is disengaged from the inclined surface 253A of the fixed plate 251. As a result, the clincher guide 210 rotates clockwise to escape, and the buckling of the staple S is prevented.
[0084]
That is, when the sheet bundle P has a thickness greater than or equal to a predetermined thickness, the clincher guide 210 escapes when the staple S is driven out, and buckling of the staple S is prevented. For this reason, the ejection path 601 of the cartridge 600 is not clogged by the buckling of the staple S, and therefore, it is prevented that the drive shaft 410 is locked by being stopped while the driver holder 101 or the forming holder 110 is raised. Is done.
[0085]
Further, although the rotation position of the clincher guide 210 differs depending on the thickness of the sheet bundle P, the relative position of the clincher arm 220 with respect to the clincher guide 210 does not change depending on the rotation position as shown in FIG. Therefore, as the shaft 33 moves forward, the clincher arm 220 always rotates around the shaft 31 by a predetermined angle with respect to the clincher guide 210 regardless of the rotation position, as shown in FIG. Therefore, the leg portions Sa of the staples S can be reliably clinched regardless of the thickness of the sheet bundle P.
[0086]
Further, when the forming holder 110 is located at the home position, the slider 301 has the leading end 334A of the claw 334 of the claw feeding plate 330 drawn into the top surface of the base 302 of the slider 301 as shown in FIG. Yes. For this reason, when the cartridge 600 is removed from the stapler main body 10, it is possible to prevent the cartridge 600 from being pulled out due to the leading end 334 </ b> A of the claw 334 being caught by the sheet staple ST.
[0087]
【The invention's effect】
As described above, according to the present invention, by reciprocating rotation of the clincher link, the sheet bundle is pinched by the clincher body, the clincher body is fixed by the fixing means, the clincher of the staple leg portion by the clincher, and the clincher body. Since the release of the fixing of the sheet and the release of the clamping of the sheet bundle are performed, there is no need to provide a dedicated link member for each, and therefore the structure becomes simple and the stapler body is small. Weight reduction can be achieved.
[Brief description of the drawings]
FIG. 1A is a front view showing an external appearance of an electric stapler according to the present invention.
(B) It is a side view of the said electric stapler.
2A is a plan view of the electric stapler shown in FIG. 1. FIG.
(B) It is a rear view of the electric stapler shown in FIG.
3 is a longitudinal sectional view showing a configuration of the electric stapler of FIG. 1;
FIG. 4 is an explanatory diagram showing an attached state of the clincher link.
FIG. 5A is a plan view showing a main body case.
(B) It is sectional drawing which showed the main body case.
FIG. 6A is a front view showing a first mid gear holder.
(B) It is sectional drawing which showed the 1st midgear holder.
FIG. 7A is a front view showing a second mid gear holder.
(B) It is sectional drawing which showed the 2nd midgear holder.
FIG. 8 is a cross-sectional view showing a state in which a gear plate is attached to a second mid gear holder.
FIG. 9 is an explanatory view showing a gear plate.
FIG. 10 is a front view showing a drive gear holder.
FIG. 11 is a side view showing a disk of the drive gear holder.
FIG. 12 is a cross-sectional view showing a drive gear holder.
FIG. 13 is a rear view showing the drive gear holder.
FIG. 14 is an explanatory view showing a state in which a driver is attached to a driver holder.
FIG. 15 is an explanatory diagram showing a positional relationship between a driver holder, a driver cam, and a driver return cam.
FIG. 16 is an explanatory view showing a state in which a forming plate is attached to the forming holder.
FIG. 17 is an explanatory diagram showing a positional relationship between a forming holder, a forming cam, and a forming return cam.
FIG. 18 is an explanatory diagram showing a positional relationship between a driver holder and a forming holder.
FIG. 19 is a cross-sectional view showing a configuration of an anvil mechanism.
FIG. 20 (A) is a front view showing a state in which a leaf spring is attached to the anvil plate. (B) It is sectional drawing which showed the state which attached the leaf | plate spring to the anvil plate.
FIG. 21 is a plan sectional view showing a state in which the tip of the anvil has entered the cartridge ejection passage.
FIG. 22 is a side cross-sectional view showing a state in which the tip of the anvil has entered the cartridge ejection passage.
FIG. 23 is a side cross-sectional view showing a state in which the front end portion of the anvil has retreated from the cartridge ejection passage.
FIG. 24 is a plan sectional view showing a state in which the tip end portion of the anvil has retreated from the ejection passage of the cartridge.
FIG. 25 is a plan view showing a state where a slider is attached to the case body.
FIG. 26 is a cross-sectional view showing a state in which the slider is attached to the case body.
FIG. 27A is a front view showing a positional relationship between a slider and a disk of a drive gear holder. (B) It is the side view which showed the positional relationship of the slider and the disc of a drive gear holder.
FIG. 28A is a plan view showing a slider.
(B) It is the front view which showed the slider.
FIG. 29 is an explanatory view showing a state in which the feeding plate is attached to the slider.
FIG. 30 is an explanatory diagram showing the positional relationship between the slider and the sheet staple stored in the cartridge.
FIG. 31 is an explanatory diagram showing a state in which sheet staples are fed out by a slider.
FIG. 32 is a side view showing the configuration of the lock mechanism.
FIG. 33 is a side view showing the configuration of the release mechanism.
FIG. 34A is a side view showing a clincher guide.
(B) It is a bottom view of a clincher guide.
(C) It is a longitudinal cross-sectional view of a clincher guide.
FIG. 35 is an enlarged view showing the tip of the clincher guide (A).
  (B) It is an expanded sectional view of the front-end | tip part of a clincher guide.
FIG. 36 (A) is a side view showing the clincher arm.
(B) It is a bottom view of a clincher arm.
(C) It is a longitudinal cross-sectional view of a clincher arm.
(D) It is an enlarged view of the front-end | tip part of a clincher arm.
FIG. 37 is an explanatory view showing a state where the clincher arm is attached to the clincher guide.
FIG. 38 is an explanatory view showing a state where the clincher arm is rotated with respect to the clincher guide.
FIG. 39 is an explanatory diagram showing the relationship between the clincher guide, the clincher arm, the spring, and each axis.
FIG. 40 is a plan view showing a lock mechanism and a release mechanism.
FIG. 41 is a perspective view showing a lock mechanism and a release mechanism.
FIG. 42 is a side view showing a lock mechanism and a release mechanism.
FIG. 43 is a longitudinal sectional view showing the configuration of the cartridge.
44A is a plan view showing a cartridge main body. FIG.
(B) It is a longitudinal cross-sectional view of a cartridge main body.
45A is a bottom view of the cartridge main body of FIG. 44. FIG.
FIG. 4B is a side view of the cartridge body.
FIG. 3C is a front view of the cartridge main body.
FIG. 46 is a perspective view showing a leaf spring body of the cartridge.
FIG. 47 is an explanatory diagram for storing sheet staples stacked on a cartridge body.
FIG. 48 is a time chart showing the operation of the electric stapler.
FIG. 49 is an explanatory view showing a disk of the drive gear holder when the slider moves forward.
FIG. 50 is an explanatory view showing a state in which staples are formed in a U-shape.
FIG. 51 is an explanatory view showing a state of the lock mechanism, the clincher link, and the clincher guide when the forming holder is located at the home position.
FIG. 52 is an explanatory view showing a state of the release mechanism when the forming holder is located at the home position.
FIG. 53 is an explanatory view showing a state in which the tip portion of the clincher guide clamps the sheet bundle by the rotation of the clincher link.
FIG. 54 is an explanatory view showing a state of the release mechanism when the tip portion of the clincher guide clamps the sheet bundle.
FIG. 55 is an explanatory view showing a state in which staples are driven out.
FIG. 56 is an explanatory view showing a state in which the staple is driven out and the leading end portion of the staple leg portion enters the groove of the clincher arm.
FIG. 57 is an explanatory view showing a state in which the leg portion of the staple that has been punched is bent inward.
FIG. 58 is an explanatory view showing a rotation position of the clincher link when the forming holder is lowered from the top dead center.
FIG. 59 is an explanatory view showing a rotation position of the clincher arm 220 with respect to the clincher guide 210. FIG.
FIG. 60 is an explanatory view showing a state in which the leg portion of the staple is bent by the clincher arm.
61 is an explanatory view showing a state where the clincher link is slightly rotated counterclockwise from the position shown in FIG. 58. FIG.
62 is an explanatory view showing a state of the release mechanism when the clincher link is rotated to the position shown in FIG. 61. FIG.
FIG. 63 is an explanatory diagram showing a state in which the lock is released by the lock mechanism.
FIG. 64 is an explanatory view showing the operation of the release mechanism.
FIG. 65 is an explanatory diagram for explaining that staple buckling is prevented when the sheet bundle P is thick.
[Explanation of symbols]
101 Driver holder (holder)
102 drivers
110 Forming holder (holder)
111F forming plate
112F forming plate
201 Clincher link (link member)
210 Clincher is id (clincher body)
220 Clincher arm (clincher)
250 Lock mechanism (fixing means)
251 fixed plate
300 Sending mechanism (sending means)
600 cartridges
601 Launch passage
ST Sheet staple
S Staple

Claims (6)

A feeding means for feeding the sheet staple stored in the storage chamber toward one end of the ejection path; a forming holder that reciprocates while holding the forming plate; and a driver holder that reciprocates while holding the driver; And a clincher body that sandwiches a sheet bundle placed on the other end side of the ejection path, and the forming plate is formed into a U-shape by the forward movement of the forming holder for the staple fed to one end of the ejection path. An electric stapler for forming and driving a staple formed in a U-shape by a forward movement of the driver holder toward the sheet bundle from the other end of the discharge passage,
A link member that reciprocally rotates by reciprocating movement of the forming holder, and a fixing means that fixes the clincher body at a position where the tip end portion sandwiches the sheet bundle,
The clincher body includes a clincher that clinches leg portions of the staples that penetrate the sheet bundle,
The link member performs operations of clamping the sheet bundle by the clincher body, fixing the clincher body by the fixing means, clinching the staple leg by the clincher, releasing the fixing of the clincher body, and releasing the clamping of the sheet bundle. An electric stapler characterized by performing reciprocating rotation. The fixing means has a fixing plate that reciprocates in conjunction with the reciprocating rotation of the link member, the clincher body is fixed by the forward movement of the fixing plate, and the fixing is released by the backward movement of the fixing plate. The electric stapler according to claim 1. The clincher body includes a clincher guide whose rear portion is pivotally supported by the main body and reciprocally rotated by reciprocating rotation of the link member, and a clincher arm whose rear portion is pivotally supported by the rear portion of the clincher guide,
The electric stapler according to claim 1 or 2, wherein the clincher arm rotates relative to the clincher guide by reciprocating rotation of the link member to clinch the leg portion of the staple. The clincher arm is disposed on the inside of the clincher guide,
  The electric stapler according to claim 3, wherein the fixing plate fixes the clincher guide. A spring for rotating and biasing the clincher body in a direction to sandwich the sheet bundle;
  The link member holds the clincher body at a predetermined position against the urging force of the spring when the link member is located at an initial position, and releases the clincher body from the spring by releasing the clincher body during forward movement. 5. The clincher body according to claim 1, wherein the clincher body is held at a predetermined position against a biasing force of the spring during a backward movement. Electric stapler. The clincher arm rotates by a predetermined angle relative to the clincher guide to clinch the leg portions of the staples regardless of the rotation angle of the clincher guide when the sheet bundle is sandwiched. The electric stapler according to claim 4.

Images