JP2013158840A - Stapler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stapler capable of coping with a paper sheet bundle of about 20 sheets by using a plastic staple.SOLUTION: A stapler includes a base stand with stood walls on both sides attached to a base, a magazine for housing a staple pivotally attached by a first pin in an upper part on the rear end of the stood walls of the base stand, and urged upwards by a spring between the base and itself, a handle pivotally supported at its rear end by the first pin, and urged upwards by the spring between the magazine and itself, and a lever with its rear end protruded outwards from a through-hole approximately in the center of the handle, and its front end pivotally supported by a second pin at the front upper ends of the stood walls. The stapler further includes a holder for holding a pair of needles with a slit for passing the staple in the front end part of the magazine, and spindles for pressing the staple in the upper part of the holder. The spindle is held by the holder at its upper end, and the holder is attached to an attachment part formed on the back surface on the front end of the handle.

Description

  The present invention relates to a stapler for binding a plurality of sheet bundles with staples, and more particularly to a stapler that employs a plastic staple.

  In general, a staple made of metal is used as a staple for binding a bundle of sheets, and the bundle of sheets is pierced at the tip, and the tip is bent to be in a spelled state. However, recently, when discarding documents, it has been required to separate flammable and non-flammable materials, and instead of metal staples in response to shredders, plastic ones have been provided. .

  However, plastic staples are weak due to their own hardness, and even if a pressing force is applied, they cannot pierce and penetrate a paper bundle. Therefore, the applicant has developed a mechanism that uses a pair of needles formed with slits through which staples pass, and pushes the staples fed from the upper opening of the needles with a spindle while penetrating the sheet bundle with the needles (patent) Reference 1).

  This mechanism can handle only a few sheets of paper bundles. In actual use, this mechanism maintains the parallelism between the magazine in which the staples are stored and the base that receives the paper bundles, and is used for operation. There was a point that operability was not good in some elements such as a lever.

JP 2003-000310 A

  The problem to be solved by the present invention is that, conventionally, plastic staples can be used to cope with a bundle of about 20 sheets of paper, and it is easy to use with high accuracy and ease of use. There was no stapler that could do that.

  In order to solve this problem, a stapler according to the present invention includes a base, a base stand having standing walls on both sides assembled to the base, and a pivot on a first pin at the upper rear end of the standing stand. A magazine which is attached to the base and accommodates a staple biased upward by a spring between the base and a rear end pivotally supported by the first pin, and is biased upward by a spring between the magazine and the magazine. The handle has a lever that protrudes outward from the substantially central through hole of the handle to the outside and the front end is pivotally supported by the second pin at the front upper end of the standing wall. A holder for holding a pair of needles formed with slits through which staples pass is provided. A spindle for pressing the staples is provided above the holder, and the spindle has a top end as a holder. Held, the holder is characterized in that mounted on the mounting portions formed at the front end rear surface of the handle.

  Further, the stapler according to the present invention is characterized in that the standing wall of the base stand is fitted and protruded by a slit formed in the base, and the base stand is fixed to the base with screws at a plurality of locations. The lever described above is provided with a pressing member for pressing the magazine on the lower surface and a pressing portion for pressing the upper surface of the handle, and the magazine is fitted with a rail member for guiding staples below. It is characterized by.

  Further, the stapler according to the present invention is characterized in that an opening / closing knob for inserting a staple assembly is detachably provided at the rear end of the magazine, and the opening / closing knob has a spindle. The rear end is fixed, a coil spring is wound around the periphery of the spindle, and a feeder that pushes and conveys the staple assembly by the spring force is provided at the tip of the coil spring. .

  In the stapler according to the present invention, the front side of the handle and the magazine has a front arc-shaped cover that is urged by a string spring fitted to the boss on the inner surface of the handle. It is characterized by being fitted, and one end of the string spring is engaged with the mounting portion of the spindle holder, and a protector covering up to the needle is placed in front of the magazine, It is characterized in that the end is engaged with an engagement hole formed in the above-mentioned standing wall, and the front lower end of the above-mentioned standing wall is a stopper of a paper bundle to be bound. .

  The stapler according to the present invention is configured as described above. Therefore, using a staple made of plastic, a bundle of paper is pierced by a needle and penetrated through the staple, and the binding operation is reliably executed by increasing the pressing force, and can handle a large number of sheets of paper. . The installation position of the target sheet bundle formed between the protector and the base is held parallel to the maximum sheet bundle thickness, and the operation of pushing the lever gives a step-by-step click feeling. The execution can be confirmed.

FIG. 3 is a partially cutaway side view of a staple embodying the present invention. FIG. 2 is a sectional view taken along line A-A ′ in FIG. 1. It is a longitudinal cross-sectional view of a handle. FIG. 4 is a cross-sectional view taken along line C-C ′ in FIG. 3. FIG. 4 is a sectional view taken along line D-D ′ in FIG. 3. FIG. 4 is a cross-sectional view taken along line F-F ′ in FIG. 3. It is a longitudinal cross-sectional view of a lever cover. It is a bottom view. It is a figure which shows a spindle holder. It is a bottom view. It is a top view which shows a protector. It is a side view. It is a figure which shows a needle holder. It is A-A 'line sectional drawing in FIG. It is a front view which shows the right needle. It is a side view. FIG. 17 is a cross-sectional view taken along line A-A ′ in FIG. 16. It is a longitudinal cross-sectional view of a base. It is a top view. It is a figure which shows a base stand. It is a right view. It is a figure which shows a feeder. It is a side view. It is a figure which shows the spindle for feeders. It is A arrow view in FIG. It is a B arrow line view in FIG. It is a figure which shows the pivot pin of a lever. It is a longitudinal cross-sectional view of a magazine. It is a top view. It is a top view which shows a guide rail. It is a side view. It is a top view which shows a knob. It is a longitudinal cross-sectional view. It is a figure which shows the plastic staples used. It is a figure which shows the middle of operation. It is a figure which shows an example of a fixation state.

  This was realized by configuring as illustrated in the drawings and described in the examples.

  Next, an example of a preferred embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 12 denotes a base. The base 12 is a plate-like body that gradually decreases in height from the front to the rear, so that it is easy to accept the sheet bundle when the whole is gripped. It is designed to be slightly inclined toward the head, making it easier to perform the spelling operation with one hand.

  The base 12 is formed with receiving holes 12a and 12a for receiving tips of needles 11 and 11 to be described later on the upper surface near the front, and a pair of slits 12b and 12b parallel to the side from the middle to the rear, Engagement step portions 12c and 12c are formed on the outer sides of the slits 12b and 12b. A receiving hole 12d is formed between the slits 12b and 12b to receive a lower end of a coil spring 22 that is elastically provided with a magazine 20 (rail 21) to be described later. Screw holes 12e and 12e for wearing are formed, and a step portion 12f into which the base stand 15 is fitted is formed.

  In the figure, reference numeral 15 denotes a base stand that is fitted to the lower surface of the base 12 and is fixed to the base 12 with screws 13. The base stand 15 is formed with confronting standing walls 15a, 15a on both sides, and the standing walls 15a, 15a are inserted into the slits 12b, 12b of the base 12 from below. The standing walls 15a and 15a are formed with outwardly cut and raised pieces 15b and 15b, which are engaged with the engaging step portions 12c and 12c to prevent them from coming off.

  The standing walls 15a and 15a are formed with projecting pieces at the front upper part, and an insertion hole 15c of a pin 19 that pivotally supports the tip of the lever 3 described later is formed at the tip of the projecting piece, and the rear end An insertion hole 15d for a pin 24 that integrally supports a magazine 20 and a handle 1 described later is formed in the upper part. Further, a slit hole 15e for supporting a rear end of a protector 9 to be described later is formed in the middle of the front side. The front lower edge 15f of the standing walls 15a and 15a acts as a stopper when setting the target sheet bundle. However, the position of the front lower edge 15f can be shifted rearward if necessary. .

  On the other hand, reference numeral 1 denotes a handle. The handle 1 has a front surface formed in an arc shape, and has an upper surface as a bulging portion. A rear hole 1a for projecting a rear portion of a lever 3 described later outward is formed at the rear portion of the bulging portion. Further, a receiving hole 1b for receiving the upper end of a coil spring 25 that is provided between the magazine 20 and the magazine 20 is formed in the rear inner surface of the through hole 1a. End receiving holes 1c and 1c of the pin 24 that pivot together are formed.

  In addition, a mounting portion 1d of a holder 4 of a spindle 5 is formed on the inner surface of the upper surface in front of the bulging portion. The mounting portion 1d is composed of opposing projecting pieces 1e and 1e projecting from the inner surfaces of the left and right side walls and a pair of projecting pieces 1f and 1f projecting from the inner surface of the upper surface, and between the projecting pieces 1e, 1e, 1f and 1f. The holder 4 is configured to be press-fitted.

  Further, a boss 1g for energizing with a chord spring 7 at the rear end of the cover 6 (to be described later) is formed on the inner surface of the lower side of the front side of the handle 1 with an annular groove around the base end.

  In the figure, reference numeral 3 denotes an operating lever, and 2 denotes a lever cover that covers the upper surface of the lever. The lever 3 is U-shaped in cross-section and has a hemispherical shape that presses the top surface of the handle 1 to the base of the portion that protrudes outward from the handle 1 through the through hole 1a. The bottom 3a is protruded, and through holes 15c, 15c of the standing walls 15a, 15a and a through hole 3b integrally pivotally supported by the through hole of the protector 9 and the pin 19 are formed on the side surface near the front end.

  The lever cover 2 is mounted so as to cover the upper surface of the lever 3, and is fixed integrally by screwing screws into the screw holes 2a, 2a of the lever 3 from below. A pair of pressing pieces 2b, 2b whose ends are rounded are integrally suspended on the inner surface of the lever cover 2 near the front, and the pressing pieces 2b, 2b are magazines which will be described later when the lever 3 is operated and lowered. The upper surface of 20 is pushed and this is pushed down. 2c is a reinforcing rib provided between the pressing pieces 2b and 2b. The pressing pieces 2b and 2b can be replaced by springs, and the pressing timing can be measured. In addition to the coil, a plate spring can be used as the spring. If a spring is used here, the coil spring 25 described above can be dispensed with.

  In the figure, reference numeral 20 denotes a magazine that accommodates a staple assembly. The magazine 20 has a stepped downward U-shape, and a rail member 21 is attached to the lower surface opening portion. A storage portion 20a of the needle holder 10 is provided in the front inside of the magazine 20, and an engagement hole 20b for receiving an engagement claw of the needle holder 10 is formed on both inner surfaces of the storage portion 20a. Further, insertion guides 20c and 20c for a pair of spindles 5 inserted into the needle 11 are provided on the upper outer surface of the storage portion 20a, and a screw insertion hole 20d for fixing the needle holder 10 with a screw 8 from above. Is drilled.

  On the other hand, brackets 20f each having an insertion hole 20e through which the standing wall 15a, 15a and the pin 24 integrated with the handle 1 are inserted are integrally provided on both sides of the upper surface near the rear side of the magazine 20. In addition, an engagement hole 20g is formed on the rear side of the bracket 20f so that an engagement claw of a knob 23 described later can be engaged and removed. Further, engagement holes 20h and 20h are formed in the inner surface of the side wall near the lower edge so that the engagement claws of the rail member are engaged and snap-in mounted, and a staple conveyance guide is formed corresponding to the rail member 21. A pair of parallel ridges 20i are suspended from the upper surface inside.

  In the figure, reference numeral 21 denotes a rail member that is snap-in mounted from below the magazine 20, and engagement pieces 21 a that engage with the engagement holes 20 h of the magazine 20 are formed on both side surfaces. In addition, a pair of parallel protrusions 21b and 21b constituting a staple conveyance guide are provided on the upper surface corresponding to the protrusions 20i and 20i of the magazine 20. Further, a protrusion 21c that corrects the positional deviation of the staple is provided in the middle of the protrusions 21b and 21b.

  In the figure, reference numeral 23 denotes an opening / closing knob that closes and opens the rear end opening of the conveyance path of the staple assembly constituted by the magazine 20 and the rail member 21, and staples into the conveyance path by removing the knob 23. The assembly will be loaded and accommodated. The knob 23 is provided with an engaging piece 23b having a spring property integrally formed on the upper surface with a locking projection 23a that is bent downward at the tip and engaged with the engaging hole 20g of the magazine. In addition, a receiving hole 23c for fitting and fixing the rear end of the spindle 18 serving as a guide for conveying the staple assembly is formed at the center of the inner surface, and the rear end receiving recess 23d of the magazine 20 and the rear end of the rail member 21 are formed. A receiving recess 23e is formed. The knob 23 attaches and detaches the locking projection 23a to and from the engagement hole 20g of the magazine 20 using the spring property of the engagement piece 23b.

  Reference numeral 9 in the figure denotes a protector for covering the front of the magazine 20 and the later-described needle 11 to prevent injury and the like. The protector 9 extends rearward from the front plate 9a and both side edges of the front plate 9a. A pair of parallel side plates 9b, 9b is provided. Engagement pieces 9c and 9c bent outward are integrally formed at the rear ends of the side plates 9b and 9b, and the engagement pieces 9c and 9c are engaged with the engagement holes 15e of the standing wall 15a. Fasten.

  Further, the upper edges of the side plates 9b and 9b are partially bulged, and through holes 9c are formed in the bulged portion to communicate with the insertion holes 15c and 15c of the pin 19 of the standing wall 15a. By inserting 19, the integration with the standing wall 15a is further strengthened.

  In the figure, reference numeral 6 denotes a cover in which the front surface is adapted to the front arc shape of the handle 1, and the handle 1 is an arc surface that is movable along the handle 1, and this cover 6 has a pair of fan shapes directed from both side edges of the front surface to the rear. Side plate 6a. The rear end of the side plate 6a is fitted to a boss 1g formed on the inner surface of the handle 1, and the upper end of the side plate 6a is held by one end of a string spring 7 having a base fitted in an annular groove at the base end of the boss 1g. Has been positioned. The other end of the string spring 7 is hung on a projecting piece 1e forming the mounting portion 1d of the spindle holder 4 and urges the cover 6.

  The spindle holder 4 is formed in a substantially flat plate shape, and a lower portion thereof is parallel and has an insertion portion 4a at the base end of the spindles 5 and 5 integrally connected to the upper end. The insertion portion 4a includes the spindle 5 5 are formed by concentrically inflating the periphery. Upper end connecting portions of the spindles 5 and 5 are embedded in the main body.

  The pair of spindles 5, 5 are inserted through insertion guides 20 c, 20 c formed on the upper surface of the magazine 20, and their tips are placed in the upper openings of the pair of needles 11, 11 held by the needle holder 10 in the magazine 20. It is confronting.

  In the figure, reference numeral 10 denotes a needle holder. The needle holder 10 is formed with insertion portions 10a and 10a through which a pair of left and right needles 11 and 11 are penetrated and held parallel to the vertical direction. Claw pieces 10b and 10b that are engaged and fixed in the engagement holes 20b and 20b of the magazine 20 when mounted on the magazine 20a are formed, and screw holes 10c that are fixed by screws 8 from the top surface of the mounting portion 20a. Is drilled. Reference numeral 10d denotes a recess with which the tip of the spindle 18 in the staple feeder comes into contact.

  A pair of needles 11 and 11 is symmetrical, and FIG. 15 shows the needle 11 on the right side. This needle 11 is formed with a slit 11a vertically communicating with the surface facing the left needle 11, and is disposed at a right angle to the slit 11a. Is provided.

  Further, the needles 11 are slightly bent inwardly in directions opposite to each other to force the return direction of the staple locking pins, and a slit 11a is formed at the tip part. The portion 11c is cut into an arc shape to facilitate discharging of the staple locking pins.

  In the figure, reference numeral 18 denotes a spindle which is accommodated in the magazine 20 and is supported by fitting the rear end 18a into the receiving hole 23c of the knob 23. Around the spindle 18, a coil spring 16 for urging the feeder 17 is provided. It is wound. A stopper 18 b receives the rear end of the coil spring 16. Reference numeral 18c denotes a front end flange of the spindle 18 which is inserted into the concave portion 10d of the needle holder 10 and is brought into contact therewith.

  Further, reference numeral 17 in the figure denotes a feeder which inserts the spindle 18 through the center hole 17a, and is urged forward by the coil spring 16 along the spindle 18 to push and feed the stored staple assembly. The feeder 17 is substantially H-shaped in a plan view, and parallel pressing pieces 17b, 17b for pressing the right and left staple locking pins and a connecting portion 17c integrated at the center of the pressing pieces 17b, 17b. A central hole 17a is formed at the center of the connecting portion 17c. The pressing pieces 17b and 17b are configured to push the staple at the front end and receive the urging force of the coil spring 16 at the rear end.

  Moreover, 100 shown as FIG. 34 shows an example of the plastic staple used. The staple 100 has a pair of locking pins 120 and 120 on the left and right sides, and the locking pins 120 and 120 are integrally connected by a filament 110, and some of the locking pins 120 and 120 are fragile. The connecting pins 130 and 130 are supplied as an assembly continuous in the front and depth directions in the figure. When the locking pins 120 and 120 are fed into the slits 11a and 11a of the needles 11 and 11, the staple 100 is pressed by the spindle 5 from above the needles 11 and 11, and the connection pins 130 and 130 are cut and supplied as a single product. Is done.

  The locking pins 120, 120 are lowered while being pushed in the needles 11, 11, and when the tips of the needles 11, 11 pass through the sheet bundle P, they are forcibly bent in the shape of the needles 11, and the sheet bundle A sheet bundle P is bound between the back side of the P and the filament 110. Here, the staple 100 shown is merely an example, and the position of the filament 110 and the positions of the connection pins 130 and 130 are not particular.

  Here, the usage method and operation of the stapler according to this embodiment will be described. First, the target sheet bundle P to be bound is set in the space between the front upper surface of the base 12 and the protector 9. At this time, the height of the space is assumed to be the thickness of the sheet bundle P that can be bound, and the insertion depth is also limited by the stopper 15f at the front edge of the standing wall 15a. It is possible to provide an unrestricted mechanism such as by not providing a slit or forming a slit.

  In this state, the staple 100 is fed into the slits 11a and 11a of the needles 11 and 11 by the feeder 17 biased by the spring 16, and the free end protruding from the handle 1 of the lever 3 is connected to the pin 19 with the pivot shaft. First, the bottom 3a formed on the lever 3 pushes the upper surface of the handle 1 and pushes down the handle 1 against the urging force of the spring 25. Next, the mounting portion 1 d of the handle 1 also pushes the head of the spindle holder 4, and the spindles 5 and 5 are inserted from the guide 20 c into the upper opening of the needle 11. At this time, the inner surface of the front plate of the handle 1 is lowered along the front surface of the cover 6.

  Further, the pressing force of the lever 3 presses the upper surface of the magazine 20 via the pressing pieces 2 b and 2 b and presses the magazine 20 against the urging force of the spring 22. As the magazine 20 descends, the needles 11 and 11 attached to the needle holder 10 also descend and pierce the paper sheet bundle P. The pressing pieces 2b and 2b can be replaced with springs as described above.

  When the lever 3 is further pushed down, the needles 11 and 11 pass through the sheet bundle P, and their tips enter the receiving holes 12a and 12a of the base 12 and penetrate the sheet bundle P. Subsequently, the staple 100 pushed down by the spindles 5 and 5 is ejected in a state in which the locking pins 120 and 120 are bent along the shape of the needles 11 and 11 and parallel to the filament 110 on the back side of the sheet bundle P. Thus, the sheet bundle P is bound by the locking pins 120 and 120 and the filament 110. The lever 3 is pushed down by a plurality of springs 25 and 22 or springs instead of the pressing pieces 2b and 2b as pressing members, and the sheet bundle P having a thickness of about 20 sheets is also sufficiently needle 11. , 11 can be obtained.

  Further, the assembly of the staple 100 is removed by removing the knob 23 attached to the rear opening of the magazine 20, pulls out the spindle 18, the coil spring 16 and the feeder 17 together with the knob 23, and is loaded and accommodated in a conveyance path formed with the rail member 21. The After the assembly of the staple 100 is accommodated, the spindle 18, the coil spring 16 and the feeder 17 are inserted into the magazine 20, compressed against the urging force of the spring 16, and the knob is mounted and locked again. State and can.

  The stapler according to the present embodiment is configured as described above. In this embodiment, a hand-held type that is operated with one hand is assumed, but it is also possible to increase the size of each part so as to be a table-mounted type.

DESCRIPTION OF SYMBOLS 1 Handle 1d Mounting part 2 Lever cover 2b Pressing piece 3 Lever 3a Bochet 4 Spindle holder 5 Spindle 6 Cover 7 String spring 8 Screw 9 Protector 10 Needle holder 11 Needle 11a Slit 12 Base 12a Receiving hole 12d Receiving hole 13 Screw 15 Base stand 15a Standing wall 16 Coil spring 17 Feeder 18 Spindle 19 Pivot pin 20 Magazine 21 Rail member 22 Coil spring 23 Knob 24 Pivot pin 25 Coil spring 100 Staple 110 Filament 120 Locking pin P Paper bundle

It is the side view which fractured | ruptured partially the stapler which implemented this invention. FIG. 2 is a sectional view taken along line A-A ′ in FIG. 1. It is a longitudinal cross-sectional view of a handle. FIG. 4 is a cross-sectional view taken along line C-C ′ in FIG. 3. FIG. 4 is a sectional view taken along line D-D ′ in FIG. 3. FIG. 4 is a cross-sectional view taken along line F-F ′ in FIG. 3. It is a longitudinal cross-sectional view of a lever cover. It is a bottom view. It is a figure which shows a spindle holder. It is a bottom view. It is a top view which shows a protector. It is a side view. It is a figure which shows a needle holder. It is A-A 'line sectional drawing in FIG. It is a front view which shows the right needle. It is a side view. FIG. 17 is a cross-sectional view taken along line A-A ′ in FIG. 16. It is a longitudinal cross-sectional view of a base. It is a top view. It is a figure which shows a base stand. It is a right view. It is a figure which shows a feeder. It is a side view. It is a figure which shows the spindle for feeders. It is A arrow view in FIG. It is a B arrow line view in FIG. It is a figure which shows the pivot pin of a lever. It is a longitudinal cross-sectional view of a magazine. It is a top view. It is a top view which shows a guide rail. It is a side view. It is a top view which shows a knob. It is a longitudinal cross-sectional view. It is a figure which shows the plastic staples used. It is a figure which shows the middle of operation. It is a figure which shows an example of a fixation state.

Claims (10)

  A base and a base stand having a standing wall on both sides assembled to the base, and a pivot that is pivotally attached by a first pin at the upper rear end of the standing wall of the base stand, and is biased upward by a spring between the base and the base A magazine that accommodates the staples, a handle that is pivotally supported at the rear end by the first pin, and is biased upward by a spring between the magazine, and a rear end that is removed from a substantially central through hole of the handle. And a lever that is pivotally supported by a second pin at the front upper end of the standing wall at the front end, and a holder that holds a pair of needles having slits that allow staples to pass through the front end of the magazine. A spindle for pressing staples is provided above the holder, the spindle is held at the upper end by the holder, and the holder is formed on the back of the front end of the handle. Stapler, characterized in that attached to the attaching portion Ri.   2. The stapler according to claim 1, wherein the standing wall of the base stand is fitted and protruded by a slit formed in the base, and the base stand is fixed to the base with screws at a plurality of positions.   The stapler according to claim 1 or 2, wherein the lever includes a pressing member that presses the magazine on a lower surface and a pressing portion that presses the upper surface of the handle.   The stapler according to any one of claims 1 to 3, wherein a rail member that guides staples is fitted to the magazine.   5. The stapler according to claim 1, wherein an opening / closing knob for inserting a staple assembly is detachably provided at a rear end of the magazine.   The rear end of the spindle is fixed to the opening / closing knob described above, and a coil spring is wound around the spindle, and a feeder that pushes and conveys the staple assembly by the spring force is provided at the front end of the coil spring. The stapler according to claim 5, wherein the stapler is provided.   The distance between the handle and the front side of the magazine is such that a front arc-shaped cover urged by a chord spring fitted to the boss on the inner surface of the handle is provided with the rear end fitted to the boss. The stapler according to one of claims 1 to 6, characterized in that   The stapler according to claim 7, wherein one end of the coiled spring is engaged with a mounting portion of the spindle holder.   9. A protector for covering up to the needle is provided in front of the magazine, with a rear end engaged with an engagement hole formed in the standing wall. The stapler described in 1.   The stapler according to one of claims 1 to 9, wherein the front lower end of the standing wall is a stopper for a bundle of paper to be bound.

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