JP4852956B2 - Electric stapler - Google Patents

Description

  The present invention relates to an electric stapler, and more particularly to a new and useful electric stapler incorporated in a copying machine or the like.

Conventionally, as this type of electric stapler, a forming part having a forming plate and a driver part having a driver plate are arranged vertically opposite to each other with respect to a clincher part having a movable clincher. Things are known. In this, the forming part and the driver part are moved to the clincher part side, the needle is bent into a U shape with the forming plate, the needle is driven out with the driver plate, and the leg part of the needle penetrates the paper on the paper table, The legs can be folded with a movable clincher to bind the paper. (Refer to patent document 1 etc.). In addition, it has been proposed that the driver unit, the forming unit, and the like are unitized so that they can be detachably attached to the stapler body. In this case, a slide block unit that guides the driving operation of the driver unit is required. .
JP 2003-92488 A

  When the forming unit, the driver unit, and the slide block unit are integrated, it is necessary to operate the forming unit, the driver unit, and the slide block unit at independent timings. For this reason, three drive means, that is, drive members such as three drive cams or drive links, are required, which is disadvantageous in terms of machine size, number of parts, and manufacturing costs.

  Further, when an anvil (bending platform) is attached to the slide block portion, the relative position between the anvil and the stapler body side needle passage is required to be highly accurate when the slide block portion is in the home position standby state. However, a certain amount of backlash is required for the drive link. In addition, since the forming part, driver part and slide block part are detachably attached to the stapler body, the slide block part is located at the top dead center. There is a problem that rattling (play) occurs and the relative position between the anvil and the main body side needle passage is lowered.

  Therefore, the number of drive members such as drive cams and drive links is reduced, which is advantageous in terms of machine size, the number of parts, manufacturing costs, etc., and even if the slide block part is a detachable type, A technical problem to be solved arises in order to improve the relative position accuracy, and the present invention aims to solve the problem. That is, the present invention makes it possible to share the driving means of the driver unit and the slide block unit, and to allow the slide block unit to be loose at the top dead center.

The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 comprises a driver portion having a driver plate for driving a nail,
An electric stapler provided with a slide lock portion that slidably guides the lifting operation of the driver portion;
The driver portion is provided with an elongated hole extending in the nail driving direction,
A slide block latch that is movably fitted in the long hole is provided so that an intermediate portion in the vertical direction can swing up and down on the slide block portion, and the slide block latch is arranged at the end of the long hole according to the drive timing of the driver portion. It is configured to engage the part,
The slide block latch is
An upper end protrusion provided at the upper end so as to be in contact with the front surface of the driver part;
A lower end protrusion provided at the lower end and slidably fitted into the elongated hole of the driver part;
With
According to the movement of the driver plate, the movement of the slide block portion is caused when the lower end protrusion of the slide block latch relatively moves from the lower end portion of the elongated hole of the driver portion to the upper end portion. The slide block latch is driven to move downward when the lower end protrusion of the slide block latch comes into contact with the upper end of the elongated hole of the driver part of the upper end protrusion, and the upper end protrusion of the slide block latch and the driver part with the contact between the front are released sequentially switched to be a falling free by the contact between the upper end portion of the long hole of the lower projecting portion and the driver portion of the slide block latch is released At the same time, an electric stapler is provided that sequentially switches to ascending free, ascending drive, and hold when ascending.

  According to this configuration, the slide block portion includes the slide block latch that is fitted in the elongated hole of the driver portion so as to be movable up and down. And according to the drive timing of a driver part, a slide block latch engages with the edge part of a long hole, and a slide block part is driven only a predetermined stroke in conjunction with the drive of a driver part. For example, when the needle is driven, since the lower end protrusion of the slide block latch engages with the upper end of the long hole, the slide block is driven downward in conjunction with the downward drive of the driver.

  According to a second aspect of the present invention, the slide block portion is mounted on a slide guide case portion having a support surface so as to be movable up and down, and is urged downward by urging means. The electric stapler according to claim 1, wherein a part of the electric stapler is configured to be pressed against a support surface of the slide guide case at a top dead center.

  According to this configuration, the slide guide case portion in which the slide block portion is movably mounted and accommodated is provided with a biasing means such as a spring or a push-down member that elastically biases the slide block portion downward. When the slide block portion is located at the top dead center, a part of the slide block latch, for example, a T-shaped bar is engaged and pressed against the support surface on the slide guide case portion side. Therefore, there is no risk of rattling or play in the slide block during standby.

  According to the first aspect of the present invention, the slide block latch is driven in conjunction with the driving of the driver portion by engaging the slide block latch with the end portion of the long hole according to the driving timing of the driver portion. A single drive source can drive both the driver plate and the slide block portion of the driver portion, eliminating the need for dedicated drive means for driving the slide block portion. In other words, by providing a slide block latch that connects and releases the slide block unit and driver unit at a predetermined operation timing, drive members such as independent drive cams and drive links for the slide block unit can be reduced. In addition, it has an excellent effect that the number of parts, space saving and cost reduction can be achieved.

  According to the second aspect of the present invention, when the slide block portion to which the anvil or the like is attached is at the top dead center, the bias of the coil spring or the like for pressing a part of the slide block latch against the support fixing surface on the slide guide case portion side Since the means is provided, in addition to the effect of the invention according to claim 1, it is possible to eliminate the occurrence of rattling and play in the slide block portion, and the required relative relationship between the slide block portion side anvil and the main body side needle passage is provided. Position accuracy can be secured stably.

  That is, at the top dead center (home position), the bottom surface of the slide block latch is pressed with an urging force so as to contact the fixed top surface in order to fix the slide block portion, thereby eliminating rattling of the slide block portion. Thus, highly accurate positioning and holding can be performed reliably.

  The best embodiment according to the present invention is advantageous in that the number of driving members such as a driving cam and a driving link is reduced, the machine size, the number of parts and the manufacturing cost are advantageous, and the slide block portion to which the anvil is attached is a detachable type. In order to achieve the purpose of improving the relative positional accuracy between the anvil and the staple path on the stapler body side, a driver unit for driving the needle, and a slide block unit for guiding the driving operation of the driver unit, Provided with a long hole extending in the driving direction in the driver portion, and a slide block latch that is movably fitted in the long hole is provided in the slide block portion, and slides according to the drive timing of the driver portion. When the block latch is engaged with the end of the long hole, the slide block is interlocked with the drive of the driver part. There characterized in that it is driven.

  Drive the slide block and driver with close strokes with a single drive link, and place the slide block latch on the slide block to fit the slide block latch, and connect and release the slide block latch and driver holder. In accordance with the movement of the driver plate, the movement of the slide block portion is switched to hold, drive, and free movement, so that only two types of drive links are required for the driver plate and the forming plate.

  In this case, the operating range of the drive link is set slightly above the top dead center, a spring (bounce urging means) is provided between the drive link and the slide block portion, and the slide block portion is moved to the lower fixed surface side. Press. That is, when the slide block portion to which the anvil or the like is attached is at the top dead center, a spring is provided to press the slide block latch against the fixed surface of the slide guide case portion.

  Thereby, at the time of positioning the top dead center of the slide block portion, it is possible to remove and position the slide block portion by the spring force of the slide block pusher. That is, in the case where an anvil is attached to the slide block, the height position of the anvil when waiting for the home position and the height position of the needle passage on the main body must match each other. Some play is required for operation, and play occurs at the top dead center. Therefore, by sliding a part of the slide block latch (for example, the T-shaped portion 78) against the fixed portion (for example, the support surface 56a of the T-shaped hole 56) of the slide guide case portion at the top dead center with the spring, Prevents backlash and enables highly accurate positioning.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The electric stapler 1 according to this embodiment sets the paper P on the paper table 2 and moves the forming unit 4, the driver unit 5, and the slide block unit 6 downward to the clincher unit 7 side to form the forming plate of the forming unit 4. The needle S formed in the U-shape at 8 is driven downward by the driver plate 9 of the driver unit 5 to penetrate the paper P, and the leg portion of the needle S is bent by the movable clincher of the clincher unit 7. .

  In this embodiment, the slide block portion 6 and the driver portion 5 that are close in operation stroke are driven by one drive link, and the upper end portion and lower end portion of the slide block latch 74 are the front surfaces of the driver portions 5 and 17 on the slide block portion 6. The long holes 82, 85, etc. are formed at appropriate positions so that the slide block portion 74 and the driver portion 5 can be connected and released via the slide block latch 74 at a predetermined operation timing. Thereby, according to the movement of the driver part 5, it is comprised so that the movement of the slide block part 6 may be switched so that holding | maintenance, a drive, and free movement can be performed sequentially. For example, when the driver unit 5 is lowered, the movement of the slide block unit 6 is held, descent driven, and descent free. Incidentally, when the driver unit 5 is raised, the reverse operation is followed.

  That is, the forming part 4 having the needle forming forming plate 8, the driver part 5 having the needle driving driver plate 9, the slide block part 6 having the driver guide recess 73, the anvil 15 and the face as a bending base. Provided with a back plate 59 and the like, and provided with a slide block latch 74 that connects and releases the slide block unit 6 and the driver unit 5 at a predetermined timing, the slide block unit 6 is driven in conjunction with the drive of the driver unit 5. This eliminates the need for an independent drive link for the slide block portion.

As shown in FIG. 1, the electric stapler 1 includes a clincher portion 7 having a movable clincher, and a stapler body 11 on which a driver assembly 3 and a needle feed assembly 10 are detachably mounted. The clincher unit 7 and the stapler main body 11 are respectively attached to an upper plate 13 and a lower plate 14 connected by a support column 12, and are disposed to face each other with the paper table 2 interposed therebetween. The driver assembly 3 includes a forming unit 4 for forming the needle S on the anvil 15 into a U-shape, a driver unit 5 for driving the U-shaped needle into the paper S, and a slide block for slidably guiding the driving operation of the driver unit 5 The unit 6 is unitized and assembled in the slide guide case parts 16 and 17 so as to be movable by a predetermined stroke.

  As shown in FIG. 2, the needle feed assembly 10 is driven by a needle feed motor 19 and feeds sheet-like staples stored in the main magazine 20 to the driver assembly 3 side at a predetermined timing. A pair of left and right positioning pins 21 are provided in the lower front portion of the needle feed assembly 10, and the positioning pins 21 and the like are biased toward the driver assembly 3 by a compression coil spring 24.

  As shown in FIG. 3, the housing of the stapler body 11 has a front opening, and the driver assembly 3 and the needle feed assembly 10 are arranged from the front side and the back side (front direction F side, rear direction B side) of the housing. Each is mounted detachably in the stapler body 11. Further, as shown in FIG. 2, plates 23 having pin holes 22 are fixedly provided on both lower side edges of the front opening of the stapler body 11.

  Side panels 28 having pins 25 and 26 on the upper and lower sides are provided on both sides of the front portion of the stapler body 11, and the pins 25 and 26 are formed in an oblique direction on the upper and lower sides of the side surface of the stapler body 11. The hole 29 and the long hole 30 are slidably fitted. Further, a pair of upper and lower claw portions 31 and 32 are formed on the front side of the side panel 28, and the protrusions 35 and 36 on the rear slide guide case side are engaged and disengaged in the notch recesses 33 and 34 inside the claw portions 31 and 32. Engagement possible.

  A lever-type holding cover 38 that fixes the upper portion of the driver assembly 3 so as to be unlockable is provided above the front opening of the stapler body 11, and the lower portion of the holding cover 38 is bent toward the front side. ing. A horizontally extending shaft 39 is connected to the upper rear surface of the holding cover 38, and as shown in FIG. 4, the lower end portions of a pair of left and right tension coil springs 40 are hooked on the vicinity of both ends of the shaft 39, The upper end of the coil spring 40 is hooked to the vicinity of both ends of the shaft 41 parallel to the shaft 39.

  Both end portions of the upper shaft 41 are slidably fitted into a long slot 42 formed in the upper portion of the side panel 28 in the horizontal direction. Accordingly, when the holding cover 38 is lifted, the holding cover 38 rotates upward around the horizontal axis 43 and the side panel 28 moves obliquely upward along the long holes 29 and 30, so that the notch recesses 33 and 34 and the assembly side are moved. The engagement lock with the projections 35 and 36 is released.

  On the other hand, a drive motor 45 is disposed on the upper portion of the stapler body 11 and an upper cover 46 is attached. As shown in FIG. 3, the output of the drive motor 45 is transmitted to the drive cam 48 via the gear mechanism 47, and the driver drive link 49 is swung up and down. As the drive link 49 swings, the driver-side protrusion 52 moves up and down at a predetermined timing. In association with driving of the drive motor 45, the drive link 50 swings up and down, and the projection 53 on the forming portion side moves up and down at a predetermined timing.

Next, the configuration of the driver assembly 3 will be described. As shown in FIG. 5, the assembly housing body of the driver assembly 3 is formed by interconnecting a pair of front slide guide case portion 16 and rear slide guide case portion 17 with pins 54 or the like. In this guide case portion, a forming portion 4 having a forming plate 8, a driver portion 5 having a driver plate 9, and a slide block portion 6 having an anvil 15 are mounted and accommodated so that they can be raised and lowered by a required stroke, respectively. Yes.

  As shown in FIG. 6, a T-shaped hole 56, a long hole 57, and a rectangular hole 58 are sequentially formed in the upper center of the front slide guide case portion 16. In addition, a vertically long notch 60 is formed at the lower center of the front slide guide case portion 16, and pins 54 are planted horizontally at the lower edge portions of both sides in the left-right width direction W of the front slide guide case portion 16. It is installed.

  The upper portions of the face back plate 59 are pivotally attached to the mounting portions 61 on both sides in the width direction of the front slide guide case portion 16 via pins 62, and the lower portions on both the left and right sides of the face back plate 59 are front slide guides. The case portion 16 is bent inward so as to horizontally surround the back surface, and a pair of left and right positioning holes 37 are formed in the bent portion. The left and right bent ends of the lower portion of the face back plate 59 that can be opened and closed are close to each other, and a guide portion 63 is integrally provided between the adjacent portions. A lock lever 65 with a knob 64 for locking the rotation of the face back plate 59 is provided at the lower end portion of the front slide guide case portion 16, and the lock lever 65 is lifted by the knob 64 so that the face back plate 59 The locked state is released.

  On the other hand, a protrusion 66 is formed on the upper front side of the rear slide guide case portion 17, and a slide block pusher 67 is provided on the protrusion 66. The slide block pusher 67 is always elastically biased downward by the compression coil spring 68, and the lower end of the slide block pusher 67 elastically presses the upper end surface of the slide block portion 6 downward. The upper part of the rear slide guide case part 17 is formed with a latching long hole 70 extending vertically, and on both the left and right sides, a long hole 71 for the projection 53 parallel to the latching long hole 70, 71 is formed.

  Pin holes 55 corresponding to the pins 54 are formed in the left and right edges of the lower portion of the rear slide guide case portion 17, and the lower end central portion of the rear slide guide case portion 17 is cut into a square shape. Yes. On the left and right sides of the rear slide guide case portion 17, a pair of upper and lower upper projections 35 and 35 and lower projections 36 and 36 that extend outward in the width direction are provided.

  A substantially I-shaped latching long hole 72 corresponding to the case side long holes 56, 57, 58 is formed in the center of the upper portion of the slide block portion 6. In addition, the left and right side edges of the slide block 6 are formed with recesses 73 that extend vertically by a predetermined dimension. A slide block latch 74 is vertically mounted on the front upper portion of the slide block portion 6, and the slide block latch 74 swings in the front and rear directions F and B around the horizontal pin 75 (see FIG. 12) in the middle portion in the vertical direction. It is provided to be movable.

  The lower end protrusion 76 on the back side of the slide block latch 74 is slidably in contact with the front surface of the rear slide guide case portion 17, while the upper end protrusion 77 of the slide block latch 74 slides on the front surface of the driver unit 5. Abuts in a movable manner. A T-shaped bar 78 is provided on the front surface side of the upper end protrusion 77 so as to be supported on a support lower surface 56 a of the T-shaped hole 56, and a T-shaped bar 79 is formed on the square hole 58 on the front surface side of the lower end protrusion 76. It is provided so as to be movable up and down. Thereby, the slide block latch 74 is smoothly swung up and down without swinging sideways.

An anvil 15 is provided at the lower portion of the slide block portion 6 so as to be openable and closable in the front-rear direction. The anvil 15 functions as a bending base when the forming plate 8 forms the needle S into a U-shape. As shown in FIG. 8, a crown support 80 is provided at the center of the lower end of the slide block portion 6 so as to be openable and closable in the front-rear direction. The crown support 80 stably supports the crown portion of the needle S when the needle is driven. Further, as shown in FIG. 9, needle passages 81 that allow the needle S to descend are formed on both sides of the crown support 80 in the left-right width direction.

  As shown in FIG. 6, the driver unit 5 includes a driver holder 18 having a latching long hole 82 extending in the vertical direction, and a driver plate 9 attached to the lower portion of the driver holder 18. The lower end protrusion 76 of the slide block latch 74 is slidably fitted in the long hole 82. Further, on both the left and right sides of the upper end of the driver holder 18 are provided protrusions 52 that engage with the recesses 83 on the one end side of the drive link 49 so that the protrusions 52 can move up and down in the recesses 73 of the slide block 6. .

  The driver holder 18 is moved up and down by the drive motor 45 through the drive cam 48 and the drive link 49, and when the driver plate 9 is lowered, the U-shaped needle S is cut and driven into the paper P side. Further, the anvil 15 and the crown plate 80 are retracted or protruded toward the slide block portion 6 at a predetermined timing in association with the lowering or raising of the driver portion 5.

  The forming unit 4 includes a forming plate 8 for forming the needle S into a U-shape and a forming holder 84 for holding the upper portion of the forming plate 8. A latch long hole 85 extending in the vertical direction is formed at the center of the forming holder 84, and a lower end protrusion 76 of the slide block latch 74 is slidably fitted into the long hole 85. Further, a pair of protrusions 53 are provided to protrude horizontally on the left and right sides of the upper end of the forming holder 84, and a notch recess 86 is formed at the tip of the protrusion 53. As shown in FIG. 7, the projection 53 is loosely fitted through the long hole 71, and the pin 51 of the forming drive link 50 is engaged with the notch recess 86 in a drivable manner.

  Next, the operation of this embodiment will be described. First, as shown in FIG. 10A, the driver assembly 3 is waiting at the home position, and in this standby state, the slide block portion 6 to which the anvil 15 and the like are attached is positioned at the top dead center. Due to the force of the compression coil spring 68, the lower end surface of the slide block pusher 67 is elastically brought into contact with the slide block portion 6 and biased downward. For this reason, since the T-shaped bar 78 of the slide block latch 74 is pressed against the lower end surface 56a of the T-shaped hole 56, there is no possibility that the slide block portion 6 may cause play or play with respect to the slide guide case portions 16 and 17 ( FIG. 11 and FIG. 12 (a)). In addition, the code | symbol H in FIG. 12 shows the height of the magazine surface which corresponds with the lower end surface of the slide block part 6. FIG.

  The lower end protrusion 76 of the slide block latch 74 is in contact with the front surface of the rear slide guide case portion 17, and the upper end protrusion 77 of the slide block latch 74 is in contact with the front surface of the driver unit 5 (FIG. 12B). )). The sheet-like needle S is sent to the driver assembly 3 side at a predetermined timing, and the first needle on the most advanced side is already formed into a U-shape.

  Now, when the drive motor 45 is driven, as shown in FIG. 10B, first, the forming unit 4 starts to descend via the forming drive link 50, and the forming plate 8 of the forming unit 4 is moved to a predetermined molding position. The straight needle S on the anvil 15 is formed into a U shape. After molding, the anvil 15 is retracted to the slide block unit 6 side as the driver unit 5 is lowered.

When the drive motor 45 is driven, the driver unit 5 starts to descend via the driver drive link 49, and at this time, the slide block unit 6 does not yet begin to descend (FIG. 12B).
. When the driver plate 9 of the driver unit 5 is lowered to a predetermined cutting position, the U-shaped S is cut and separated and supported on the crown support 80. At substantially the same time as the cutting of the needle, the lower end protrusion 76 of the slide block latch 74 abuts on the upper end of the latch slot 82, and the upper end protrusion 77 of the slide block latch 74 is disengaged from the lower end surface 56a of the T-shaped hole 56 ( FIG. 12 (c)).

  Thereafter, as shown in FIG. 10C, the slide block unit 6 starts to descend integrally with the driver unit 5 as the driver unit 5 descends. Then, as shown in FIG. 10 (d), when the driver unit 5 and the slide block unit 6 are lowered to a predetermined clamp position, needle driving by the driver plate 9 is started. That is, the crown support 80 that supports the U-shaped needle S rotates downward, and penetrates the leg portion of the U-shaped needle S through the paper P (FIG. 12D).

  Subsequently, when the driver unit 5 and the slide block unit 6 are further lowered by a predetermined stroke, the leg portion of the U-shaped needle S is bent along the back surface of the paper P by the movable clincher, as shown in FIG. The driving of the needle S is completed.

  Here, in the state of FIG. 13, when the holding cover 38 is lifted, the shaft 39 and the shaft 41 are rotated upward around the horizontal axis 43, the side panel 28 is moved in an upward oblique direction, and the protrusions 35 and 36 are notched. The engagement with the recesses 33 and 34 is released. Next, when the driver assembly 3 is pulled forward, the pin 54 and the positioning hole 37 are detached from the pin hole 22 and the positioning pin 21, whereby the driver assembly 3 is removed from the stapler body 11 (FIG. 14).

  Here, in the case of processing a jam, it is only necessary to release the rotation lock of the face back plate 59 and lift the knob 64 (FIG. 15). That is, when the lock state of the face back plate 59 shown in FIG. 4 is released and the face back plate 59 is rotated upward with the knob 64, the guide portion 63 is opened, so that the needle S can be easily removed (FIG. 16). (A), (b)).

  As described above, the slide block portion 6 includes the slide block latch 74 that fits in the elongated hole 82 of the driver portion 5 so as to be movable up and down. Then, the slide block latch 74 is engaged with the end of the long hole 82 according to the driving timing of the driver unit 5, so that the slide block unit 6 is driven by a predetermined stroke in conjunction with the driving of the driver unit 5. Is done. For example, when the needle is driven, the lower end protrusion 76 of the slide block latch 74 is engaged with the upper end of the long hole 82, so that the slide block 6 is driven downward in conjunction with the downward drive of the driver 5. When the driver unit 5 is driven up, the slide block unit 6 is driven up in conjunction with the driver unit 5 by the reverse operation.

  According to the present embodiment, by providing the slide block latch 74 for connecting and releasing the slide block unit 6 and the driver unit 5 at a predetermined operation timing, an independent drive cam, drive link and the like for the slide block unit are provided. The number of drive members can be reduced, the machine size can be reduced, and the number of parts can be reduced.

  In the case of the conventional method, in order to drive the slide block unit 6 by an independent drive means, a dedicated drive cam and drive link are required, which increases the space and the number of parts, but this embodiment solves this problem. To do. That is, since the slide block unit 6 is integrally driven together with the driver unit 5 driven by the drive motor 45 after cutting the needle, an independent drive means dedicated to the slide block unit 6 becomes unnecessary, and the drive link is formed by Two types for the unit 4 and the driver unit 5 are sufficient, and space saving and cost reduction can be achieved accordingly.

  When the slide block unit 6 is at the top dead center, the operating range of the drive link 49 is set slightly above the top dead center of the slide block unit 6, but the T-shaped bar 79 of the slide block pusher 67 is compressed. The coil spring 68 is pressed against the fixed surface (the lower end surface 56 a of the T-shaped hole 56) of the slide guide case portion 16 by the force of the coil spring 68. Therefore, there is no possibility of play or play in the slide block portion 6 with respect to the slide guide case portions 16 and 17 and the stapler body 11 side. Therefore, the relative positional accuracy between the anvil 15 and the like and the main body side needle passage 81 is improved, and accurate positioning becomes possible.

  The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified one.

The perspective view which shows the whole structure which looked at the electric stapler applied to one Example of this invention from the front. The exploded perspective view of an electric stapler same as the above. The internal side view of the drive mechanism of an electric stapler same as the above. The principal part perspective view which shows the locking mechanism of the holding cover of an electric stapler same as the above. The perspective view which shows the back side of the driver assembly of an electric stapler same as the above. FIG. 6 is an exploded perspective view of FIG. 5. The disassembled perspective view explaining a state when a driver assembly is assembled to the stapler body of the electric stapler. The principal part side view which shows the crown plate of an electric stapler same as the above. The top view of FIG. It is a perspective view explaining operation | movement of the driver assembly (a guide case part is abbreviate | omitted) of an electric stapler same as the above, (a) is a perspective view which shows the state at the time of standby, (b) is a perspective view which shows the state at the time of forming, (c) is a perspective view showing a state when the driver part is lowered (when the needle is cut), (d) is a perspective view showing a state when clamping, and (e) is a perspective view showing a state when driving is completed. The rear view of the driver assembly of an electric stapler same as the above. 11 is a cross-sectional view taken along line AA in FIG. 11, where (a) is a cross-sectional view showing a standby state, (b) is a cross-sectional view showing a state where only the driver portion is lowered, and (c) is a slide block. Sectional drawing which shows the state at the time of the fall of a part, (d) is sectional drawing which shows the state at the time of a free fall of a slide block part. The perspective view which shows the state before removing the driver assembly of an electric stapler same as the above. The perspective view which shows the state after removing the driver assembly of an electric stapler same as the above. The perspective view which shows the back side of the driver assembly of an electric stapler same as the above. The lower end part of the slide block part of an electric stapler same as the above is shown, (a) is a main part side view showing a state before unlocking the face back plate, and (b) is a state after releasing the lock of the face back plate. The principal part side view which shows.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric stapler 2 Paper table 3 Driver assembly 4 Forming part 5 Driver part 6 Slide block part 7 Clincher part 8 Forming plate 9 Driver plate 10 Needle feed assembly 11 Stapler main body 15 Anvil (bending stand)
16 Front slide guide case part 17 Rear slide guide case part 18 Driver holder 21 Positioning pin 22 Pin hole 28 Side panel 29, 30 Long hole 31, 32 Claw part 33, 34 Notch recess 37 Positioning hole 38 Holding cover 46 Drive motor 48 Drive cam 49 Driver drive link 50 Forming drive link 56 T-shaped hole 56a Support surface (lower end surface)
59 Face back plate 63 Guide plate 64 Knob 65 Lock lever 67 Slide block pusher (biasing means)
68 Compression coil spring (biasing means)
70 Long holes for latch 71, 72 Long holes 74 Slide block latch 76 Lower end protrusion 77 Upper end protrusion 78, 79 T-shaped bar 80 Crown support 82 Latch long hole 84 Forming holder 85 Latch long hole 86 Notch recess P Paper S Needle

Claims (2)

A driver portion having a driver plate for driving a nail;
An electric stapler provided with a slide lock portion that slidably guides the lifting operation of the driver portion;
The driver portion is provided with an elongated hole extending in the nail driving direction,
A slide block latch that is movably fitted in the long hole is provided so that an intermediate portion in the vertical direction can swing up and down on the slide block portion, and the slide block latch is arranged at the end of the long hole according to the drive timing of the driver portion. It is configured to engage the part,
The slide block latch is
An upper end protrusion provided at the upper end so as to be in contact with the front surface of the driver part;
A lower end protrusion provided at the lower end and slidably fitted into the elongated hole of the driver part;
With
According to the movement of the driver plate, the movement of the slide block portion is caused when the lower end protrusion of the slide block latch relatively moves from the lower end portion of the elongated hole of the driver portion to the upper end portion. The slide block latch is driven to move downward when the lower end protrusion of the slide block latch comes into contact with the upper end of the elongated hole of the driver part of the upper end protrusion, and the upper end protrusion of the slide block latch and the driver part with the contact between the front are released sequentially switched to be a falling free by the contact between the upper end portion of the long hole of the lower projecting portion and the driver portion of the slide block latch is released At the same time, an electric stapler is characterized in that when it is lifted, it is switched in sequence to lift free, lift drive, and hold.   The slide block portion is mounted on a slide guide case portion having a support surface so as to be movable up and down, and a part of the slide block latch is pressed against the support surface of the slide guide case portion by a biasing means at the top dead center. The electric stapler according to claim 1, wherein the electric stapler is configured.

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