JP2008307672A - Stapler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stapler with few manufacturing processes capable of performing stable binding. <P>SOLUTION: In this stapler 1, a handle part 6 having a pressing blade 65 in a front part is rotatably journaled to a base part 2 via a spindle 20, and a magazine part 4 is rotatably journaled to the inside of the handle part 6 via the spindle 20. In the base part 2, a table 23 energized upward is disposed, a slider 24 allowing a lowering operation of the table 23 and having a sliding support claw 52 slidable to a rear side is disposed, and a clincher 22 is provided. A plate spring 8 is mounted on the handle part 6. A slider pressing part 67 disposed to project downward in a side part of the plate spring 8 to slide the sliding support claw 52 is formed integrally with the plate spring 8, and the slider 24 is displaced to a rear side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flat type stapler in which a tip portion of a needle is flat.

  There is a stapler as a stationery for spelling paper, and staplers are indispensable as office supplies. In such a stapler, there are a staple type in which the tip end portion of the needle is curved when paper is bound and a flat type in which the tip end portion of the needle is flat. In recent years, flat type staplers are becoming mainstream, and many proposals have been made regarding such flat type staplers.

  For example, a stapler disclosed in Japanese Utility Model Publication No. 6-44605 (Patent Document 1) includes a base having a clincher, a magazine that accommodates a needle, a handle member that is pivotally attached to the vicinity of one end of the base, and the handle. A push blade that is arranged at the tip of the member and drives the needle in the magazine toward the clincher as the handle member rotates, and has a clincher surrounding portion provided on the base, and the clincher surrounding portion is relative to the clincher. A table that is moved up and down, a slider that is provided on the base and that is slidable to allow the lowering operation of the clincher surrounding portion at a predetermined timing in relation to the clinching operation of the table, and a handle member supported by the handle member A slider pressing member (link member) that slides the slider by rotation is provided.

  Further, the stapler includes a metal plate member having an upper wall portion and a side wall portion fixed along the longitudinal direction of the handle member, and having a tip portion as a pressing blade, and the side wall portion of the metal plate member. Is provided with a protrusion that forms a fulcrum of the slider pressing member, a fitting recess is formed in one end of the slider pressing member in a substantially U shape, the fitting recess is fitted to the protrusion, and the protrusion between the slider pressing member and the metal member is formed. A leaf spring is arranged in the gap.

  In this stapler, when a force is applied to the handle member, the slider pushing member is pushed upward by the magazine, whereby the slider pushing member rotates around the peripheral edge of the pivoting projection, and the tip of the slider pushing member moves backward. Therefore, the slider locked to the tip of the slider pressing member slides backward.

  However, in the proposal in Patent Document 1, there is a backlash in the locking portion between the slider pressing member and the pivoting protrusion, and the needle folding time is not correct when the stapler is used. There was a problem that there was.

  Therefore, in Japanese Utility Model Publication No. 7-27091 (Patent Document 2), the burring portion of the slider pressing member is removed in order to prevent rattling that occurs at the locking portion of the slider pressing member (operating piece) and the pivoting projection. Proposals have been made to form a pressure contact portion between the slider pressing member and the handle member, with the shape expanding toward the end.

  However, the proposals of Patent Document 1 and Patent Document 2 have a problem that the amount of displacement of the front end of the slider pressing member that slides the slider is small.

  In Japanese Patent Laid-Open No. 8-257935 (Patent Document 3), a slider pressing member (pressing body) for sliding the slider is arranged on a magazine, and the strip plate provided with a leaf spring and the slider pressing member are engaged. Proposals have been made to stop it. In this proposal, when a force is applied to the handle member, the slider pressing member in contact with the cover body descends, so that both wall portions of the slider pressing member slide back on the slider.

  Also in the proposal of Patent Document 3, the slider pressing member is not slid by using the displacement amount due to the extension of the leaf spring, but the slider is moved backward in accordance with the downward movement amount of both wall portions of the slider pressing member. In the same manner as in Patent Document 1 and Patent Document 2, the problem that the amount of displacement of the distal end portion of the push member to the rear is small cannot be solved.

In addition, when the handle member is quickly pressed against the base, there is a problem that the slider binds the paper or the like while the lowering operation of the table is stopped. To solve this problem, the displacement of the slider pressing member It was necessary to take more.
Japanese Utility Model Publication No. 6-44605 No. 7-27091 JP-A-8-257935

  The present invention has been made in view of the problems of the prior art as described above, and includes a leaf spring that can increase the amount of backward displacement of the slider and reduce assembly parts, thereby providing stable spelling. The objective is to provide a stapler that is possible and that requires few manufacturing processes.

  A stapler (1) according to the present invention has a handle portion (6) having a pressing blade (65) at a front portion via a main shaft (20) rotatably attached to a base portion (2). 6) a stapler (1) in which a magazine part (4) is pivotally mounted via a main shaft (20) on the inner side of the base part (2), and a table (23 ) And a slider (24) having a sliding support claw (52) that allows the table (23) to descend and slides backward, and a clincher on the base (2). On the other hand, a leaf spring (8) is attached to the handle portion (6), and is arranged so as to protrude downward on a side portion of the leaf spring (8). The slider pressing portion (67) for sliding (52) is formed integrally with the leaf spring (8), and the slider (24) is displaced rearward.

  The pressing blade (65) and the leaf spring (8) may be formed integrally.

  According to the present invention, it is possible to provide a stapler that can increase the amount of backward displacement of the slider and can reduce the number of assembly parts, thereby enabling stable spelling and fewer manufacturing processes.

  A stapler 1 according to the best mode for carrying out the present invention has a handle portion 6 having a pressing blade 65 at a front portion thereof pivotally attached to a base portion 2 via a main shaft 20, and the inside of the handle portion 6 is Further, a stapler 1 is rotatably mounted on the magazine portion 4 via a main shaft 20, and a base 23 is provided with a table 23 biased upward to allow the table 23 to be lowered. A slider 24 having a sliding support pawl 52 slidable rearward is disposed, and a clincher 22 is provided on the base 2, while a leaf spring 8 is attached to the handle portion 6, and a side of the leaf spring 8 is provided. A slider pressing portion 67 that is disposed so as to protrude downward and slides the sliding support claw 52 is formed integrally with the leaf spring 8, and the slider 24 is displaced rearward.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the stapler 1 of the present embodiment has a handle portion 6 having a pressing blade 65 at a front portion pivotally attached to a base portion 2 via a main shaft 20. The magazine 4 is pivotally attached to the main shaft 20 so that the paper to be bound is placed between the magazine 4 and the base 2, and the handle 6 is pressed toward the base 2. This is a flat type stapler 1 in which the needle penetrates the paper and the tip of the needle is bent horizontally on the back side of the paper to bind the paper, and the tip of the folded needle is horizontal.

  The base part 2 includes a table 23 having a clincher surrounding part 23a urged upward, a slider 24 having a sliding support claw 52 that allows the table 23 to move downward and slides backward, The clincher 22 is fixed in the vicinity of the tip and inserted into the clincher surrounding portion 23a of the table 23.

  The clincher 22 is fixed in the vicinity of the front end of the base portion 2, and the tip of the needle is bent horizontally when the tip of the needle is pressed.

  The table 23 has a clincher surrounding portion 23a through which the clincher 22 is inserted in the vicinity of the front end portion thereof, and a rear end portion is pivotally attached to the table 23. A slider locking protrusion 50 that locks with the protrusion 51 is formed, and a push spring 53 that urges the table 23 upward is placed thereon.

  The slider 24 has a table support protrusion 51 that is engaged with the table 23 at the front end thereof, and has a slide support claw 52 that is engaged with the slider pressing portion 67 on the side surface in the vicinity of the rear end portion. 2 is slidably arranged on the top. Further, although not shown, a spring is disposed below the slider 24 to urge the slider 24 forward.

  When the slider 24 is positioned at the front end, the slider locking projection 50 of the table 23 is locked with the table support projection 51 of the slider 24, and a force from above is applied to the table 23. However, the table 23 is not lowered. On the other hand, when the slider 24 slides backward and the locking portion between the slider locking projection 50 and the table support projection 51 is released, the table 23 can be lowered, and at this time, a force from above is applied to the table 23. Then, the clincher 22 is inserted into the clincher surrounding portion 23a of the table 23.

  The magazine unit 4 includes a magazine main body 41 in which the connecting needle is accommodated, a magazine lid 42, and a needle feed mechanism (not shown) that sends out the connecting needle accommodated in the magazine main body 41 to the front end portion. Although not shown, a main spring is placed between the lower surface in the vicinity and the base portion 2 to urge the magazine portion 4 upward.

  The magazine main body 41 has a U-shaped cross section and accommodates a connecting needle therein. The magazine main body 41 has a launch port 55 through which a needle punched out by a pressing blade 65 penetrates on the lower surface of the front end portion, and is formed on the side wall. Is provided with a slide rail on which a sliding member of the needle feed mechanism slides, and the vicinity of the rear end is pivotally attached to the main shaft 20.

  The magazine lid 42 is pivotally attached to the main shaft 20 at a position in the vicinity of the rear end portion, and has a protrusion that engages with the opening of the pressing blade 65 at the tip portion, and has an inner portion in the vicinity of the tip portion. Is provided with a protrusion on the periphery of a coil spring of the needle feed mechanism, and a protrusion to which one end of the spring is fixed in the vicinity of the rear end.

  The needle feed mechanism has a coil spring and a sliding member slidably attached to the slide rail of the magazine body 41, and one end of the coil spring is near the rear end of the magazine lid 42, although not shown. The other end is fixed to the protrusion of the sliding member via a protrusion that is fixed to the protrusion and formed inside the vicinity of the tip of the magazine lid 42.

  In this needle pushing mechanism, when the magazine lid 42 is rotated upward about the main shaft 20, the sliding member attached to the sliding rail of the magazine body 41 is pulled by the coil spring and slid rearward. A space is formed between the front end portion of the main body 41 and the sliding member, and the connecting needle can be accommodated in this space. Then, after accommodating the connecting needle, when the magazine lid 42 is rotated downward about the main shaft 20, the sliding member slides forward due to the tension of the coil spring and presses the connecting needle forward of the magazine body 41. It is.

  The handle portion 6 includes a pressing blade 65 at the front portion and a leaf spring 8 formed integrally with the slider pushing portion 67. The leaf spring 8 is sandwiched between the handle portion 6 and the magazine lid 42, When no force is applied to the handle portion 6 from above, play is formed between the magazine lid 42 and the handle portion 6 so that the tip of the pressing blade 65 does not contact the connecting needle of the magazine body 41. .

  Further, the pressing blade 65 has an opening to which the front end portion of the magazine lid 42 described above is locked. When the stapler 1 is used, a needle located at the tip end portion of the magazine body 41 is moved downward from the ejection port 55. It strikes toward the clincher 22, and the tip of the needle is bent by sandwiching the needle with the clincher 22.

  Further, the slider pressing portion 67 is formed so as to protrude obliquely rearward from the side portion of the leaf spring 8, and as shown in FIG. When the leaf spring 8 is pressed and bent between the magazine lid 42 and the handle portion 6 by being engaged with the support claw 52, the inclination of the slider pressing portion 67 is changed by this bending and the slider 24 is displaced rearward. Is.

  The leaf spring 8 has a force point at which the upper surface of the magazine lid 42 and the lower end of the leaf spring 8 are in contact, and a point at which the upper end of the leaf spring 8 and the handle portion 6 are in contact with each other. If the force is applied to the handle portion 6 from above, the handle portion 6 is pressed between the magazine portion 42 and the magazine lid 42, and the force point is bent about the fulcrum. As a result, the backward displacement generated when the straight line connecting the fulcrum and the force point rotates around the periphery of the fulcrum becomes the backward displacement of the slider pressing portion 67.

  Next, the operation when the stapler 1 in this embodiment is used will be described. As shown in FIG. 1, when no force is applied to the handle portion 6, the table 23 is biased upward by the force of the push spring, and the slider 24 is also biased forward by the force of the coil spring. Therefore, the slider locking projection 50 of the table 23 and the table support projection 51 of the slider 24 are locked, and the clincher 22 is positioned near the lower end of the clincher surrounding portion 23a of the table 23. Further, the magazine section 4 is biased upward by the force of the main spring placed between the magazine section 4 and the base section 2, and the handle section 6 is disposed between the magazine section 4 and the magazine section 4. The plate spring 8 is urged upward in a state where there is a gap between the magazine portion 4 and play.

  When a force is applied to the handle portion 6, first, the magazine portion 4 is rotated until it comes into contact with the table 23 of the base portion 2 as shown in FIG. At this time, since the slider locking projection 50 and the table support projection 51 are locked, the table 23 cannot move down and is in a stopped state.

  When a further force is applied to the handle portion 6, as shown in FIGS. 3 and 5, the leaf spring 8 is pressed and bent by the magazine portion 4, and the magazine portion 4 and the handle portion 6 come close to each other. A needle located in the front row of the main body 41 is ejected from the ejection port 55, and the tip end of the slider pushing portion 67 formed integrally with the leaf spring 8 is engaged with the sliding support claw 52 of the slider 24 to engage the slider 24. Slide backwards.

  When a force is further applied to the handle portion 6, as shown in FIG. 4, the slider 24 is pushed rearward by the slider pushing portion 67 and slides rearward from the base portion 2, and the slider locking projection 50 of the table 23 and the slider 24 are moved. The locking between the table support protrusions 51 is released and the slider locking protrusion 50 becomes movable, and the table 23 can be lowered. Then, the table 23 is moved down vigorously because the locking between the slider locking projection 50 and the table support projection 51 of the slider 24 is suddenly released, and the clincher 22 is inserted through the clincher surrounding portion 23a of the table 23. The tip of the needle punched out by the pressing blade 65 is bent.

  When the force applied to the handle portion 6 is stopped and then released, the stapler 1 is restored by the elastic force of various springs, and is in the spread state shown in FIG.

  By the operation of the stapler 1 as described above, the paper placed between the table 23 and the magazine 4 passes through the needle punched out by the pressing blade 65, and the leading end is bent by the clincher 22, thereby binding the paper. It is something that can be done.

  In the conventional stapler, since the displacement amount of the slider pressing portion is small, when the variation of the component dimensions or the rattling of the components occurs, the slider sliding operation timing tends to vary or delay. As a result, a problem of poor spelling such as the tip of the needle foot floating may occur. According to the stapler 1 of the present embodiment, since the leaf spring 8 and the slider pressing portion 67 are integrally formed, the amount of displacement of the tip of the slider pressing portion 67 can be amplified by the bending of the leaf spring 8, so that the sliding of the slider 24 There is a margin in the operation timing, there is no delay in the timing of the sliding operation, and the problem of poor spelling such as the tip of the needle foot floating is eliminated.

  Further, conventionally, since the pressing blade 65, the leaf spring 8, and the slider pressing portion 67 were formed by separate members, there was a problem that the work process at the time of assembling the stapler 1 was increased, but in this embodiment, Since the pressing blade 65, the leaf spring 8, and the slider pressing portion 67 are integrally formed, the work process when assembling the stapler 1 can be reduced. Note that the pressing blade 65 can be configured by a separate member from the leaf spring 8 formed integrally with the slider pressing portion 67.

  Further, by integrally forming the leaf spring 8 and the slider pushing portion 67, the leaf spring 8 can absorb the impact generated when the table 23 is lowered by the slider pushing portion 67 sliding the slider 24. Therefore, the impact generated when the stapler 1 is used can be reduced compared to the conventional case, and the force applied when the stapler 1 is used can also be reduced.

  According to the present embodiment, by using the leaf spring 8 in which the pressing blade 65 and the slider pressing portion 67 are integrally formed, it is possible to provide the stapler 1 capable of stable spelling and having fewer work processes.

  The present invention is not limited to the above embodiment, and can be used in various staplers 1 by using the leaf spring 8 integrally formed with the pressing blade 65 and the slider pressing portion 67 used in this embodiment.

Sectional drawing of the stapler which concerns on this invention. Sectional drawing explaining the use condition of the stapler which concerns on this invention. Sectional drawing explaining the use condition of the stapler which concerns on this invention. Sectional drawing explaining the use condition of the stapler which concerns on this invention. In the stapler according to the present invention, a base portion and a handle portion are removed, and a schematic view illustrating a slider sliding mechanism.

Explanation of symbols

1 Stapler 2 Base
4 Magazine section 6 Handle section
8 Leaf spring 20 Spindle
22 clincher
23 Table 23a Clincher Go
24 Slider 41 Magazine body
42 Magazine lid 50 Slider locking protrusion
51 Table support protrusion 52 Sliding support claw
53 Push spring 55 Launch port
65 Push blade 67 Slider push section

Claims (2)

A stapler that pivotally attaches a handle portion having a push blade at the front portion to the base portion via a main shaft, and pivotally attaches a magazine portion to the inside of the handle portion via the main shaft,
The base portion is provided with a table biased upward, a slider having sliding support claws that allow the table to be lowered and slidable rearward, and a clincher on the base portion. On the other hand, a leaf spring is attached to the handle portion, and is arranged so as to protrude downward on a side portion of the leaf spring, and a slider pressing portion for sliding the sliding support claw is integrated with the leaf spring. A stapler that is formed and displaces the slider backward.   The stapler according to claim 1, wherein the pressing blade and the leaf spring are integrated.

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