JP2007136614A - Stapler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and surely position and fix a clincher without tools, even for a structure where a base member is covered with a base cover member. <P>SOLUTION: In this stapler, a magazine guide 3, having a U-shaped section, is fixed along the longitudinal direction of the upper surface of a metal-made base member 1a, a staple storing magazine 6 pivots turnably to one end of the magazine guide 3, and at the other end side of the magazine guide 3, the clincher 24 is placed and fixed at a part, corresponding to a drive-out part 12 at the tip of the magazine guide 3. Both sidewall parts 23 and the clincher 24 are positioned by a positioning means 25 in the longitudinal direction of the magazine guide 3 and by a positioning means 28 in both side directions of the magazine guide 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a positioning structure for mounting and fixing a clincher on a staple guide fixed to a base member of a stapler.

  In general, a stapler has a base member having a binding stand as a means for binding sheets, a magazine having staples stored in a base member, and a clinch groove provided in the base member with staples at the leading end. And a handle provided with a driver plate that is driven out toward the head.

  Since the staples punched out from the magazine punching portion pass through the paper to be bound and hit the clinch grooves, the magazines and the clinch grooves must be positioned with high accuracy. Therefore, in a large stapler, a magazine guide having a U-shaped cross section is provided along the longitudinal direction of the upper surface of the base member, and a magazine for storing staples is pivotally supported at one end of the magazine guide, and the other end side of the magazine guide. In many cases, a clincher having a clinching groove is fixed to a portion corresponding to the leading portion of the magazine guide. In many cases, the clincher is positioned and fixed to the magazine guide with a jig or fixed by caulking.

  By the way, since a large stapler binds a large number of sheets, it is necessary to align the binding position from the end of the sheet. For this reason, a positioning member called a gauge is provided, and this positioning member is arranged along the longitudinal direction of the base member. It can be moved, and is stopped at a desired position so as to align the binding position from the end of the sheet.

At that time, a mechanism for stopping and holding the positioning member at a predetermined position is provided so that the positioning member does not easily move. However, a sufficient holding force cannot be obtained with the conventional stopping and holding mechanism. Therefore, a method has been considered in which a base cover member made of synthetic resin is placed on the base member, and a deep scale groove is formed in the base cover member so that the stop of the positioning member can be reliably held.
Japanese Utility Model Publication No. 6-3573

  However, positioning with a jig not only takes time to assemble, but if the user loosens the clincher fixing screw, it is difficult to fix it in the correct position again. It must be repaired by the manufacturer, which is inconvenient.

  Further, since the clincher is fixed on the magazine guide, in the configuration in which the base member is covered with the base cover member, how to fix the clincher to the magazine guide becomes a problem. Corresponding to this, it is conceivable to form an opening in the base cover member so that the clincher mounting position of the magazine guide can be visually observed. However, since the base cover member also has the purpose of making the appearance beautiful, it is not possible to form an opening that exposes the magazine guide to the base cover member.

  Furthermore, when the base member is covered with the base cover member, the clincher cannot be fixed to the magazine guide by caulking.

  The present invention solves the above-mentioned problems, and can position and fix the clincher easily and reliably without using a jig. Further, the clincher can be positioned and fixed even when the base member is covered with the base cover member. It is an object of the present invention to provide a clincher positioning structure in a stapler that can be used.

  In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a magazine guide having a U-shaped cross section is fixed along the longitudinal direction of the upper surface of the base member, and the staple storing magazine can be rotated at one end of the magazine guide. A stapler that is pivotally supported and has a clincher placed on and fixed to the U-shaped side walls of the magazine guide at the other end of the magazine guide at a portion corresponding to the leading end of the staple storage magazine. The both side walls and the clincher are positioned by positioning means in the longitudinal direction of the magazine guide and positioning means in both sides of the magazine guide.

  According to a second aspect of the present invention, the positioning means in the longitudinal direction of the magazine guide is a positioning portion that protrudes from the upper end edge of the both side wall portions and engages with the end portion of the clincher in the longitudinal direction of the magazine guide. It is characterized by that.

  According to a third aspect of the present invention, the positioning means in the longitudinal direction of the magazine guide includes a recess formed at the upper edge of the both side wall portions, and a protrusion protruding from the back surface of the clincher and fitting into the recess. It is formed.

  The invention according to claim 4 is characterized in that the positioning means in the left and right sides of the magazine guide is a protruding portion that protrudes from the back surface of the clincher and engages the inner surfaces of the both side walls.

  The invention according to claim 5 is provided with a base cover member that covers the base member, and at least the upper edge of the left and right side walls of the clincher mounting portion of the magazine guide is provided at a portion corresponding to the clincher of the base cover member. An opening to be exposed is formed.

  According to the first aspect of the invention, the both side walls and the clincher of the magazine guide are positioned by the positioning means in the longitudinal direction of the magazine guide and the positioning means in the both sides of the magazine guide. Since the position of the clincher is determined by the positioning means, the clincher can be easily and reliably positioned without using a jig, and can be fixed with a screw regardless of caulking.

  According to the second aspect of the present invention, the positioning means is configured by the positioning portion that protrudes from the upper edge of the both side walls of the magazine guide and engages the end of the clincher in the longitudinal direction of the magazine guide. Since the tip of the clincher is moved in the longitudinal direction of the magazine guide and the position of the longitudinal direction is determined by the positioning of the clincher, the positioning can be performed easily and reliably with a tactile sensation without using a jig.

  According to a third aspect of the present invention, the positioning means in the longitudinal direction of the magazine guide includes a concave portion formed at the upper edge of the both side wall portions, and a convex portion protruding from the back surface of the clincher and fitting into the concave portion. Therefore, the position in the longitudinal direction of the clincher is determined at the position where the convex portion is fitted to the concave portion, and therefore positioning can be performed easily and reliably by touch without using a jig.

  According to the fourth aspect of the present invention, the opening that exposes the upper edge of the left and right side walls of the clincher mounting portion of the magazine guide is formed in the portion corresponding to the clincher of the base cover member. Can be fixed on both side walls. Moreover, since the clincher is determined by the positioning means, the correct position can be known by tactile sensation. Therefore, the clincher can be fixed at an accurate position from above the base cover member.

  According to the fifth aspect of the invention, since the base member can be covered with the base cover member, not only the overall appearance is improved, but for example, a positioning member that ensures the positioning of the paper is attached to the base cover member. It is possible to obtain secondary effects such as Since the opening part which exposes the upper end edge of the right-and-left both-sides wall part of the clincher attachment part of a magazine guide is formed in the site | part corresponding to the clincher of a base cover member, a clincher can be attached from the top of a base cover.

  FIG. 1 is a perspective view of a stapler according to the present invention, and FIG. 2 is a longitudinal sectional view thereof. In the figure, reference numeral 1 denotes a base table. A binding table 2 on which a sheet is placed is provided on one side of the base table 1, and a magazine guide 3 and a handle support plate 4 are erected on the other end. A magazine 6 and an inner handle 7 are rotatably supported on a first support shaft 5 provided in the magazine guide 3. An outer handle 10 for driving the inner handle 7 is rotatably provided on the second support shaft 8 provided on the handle support plate 4.

  The magazine 6 has a space for storing staples 11 connected to the inside thereof, and a punching portion 12 is formed at the tip thereof. A staple pusher 13 that presses the connected staples toward the launching portion 12 is disposed inside the magazine 6.

  A driver plate 14 is held at the tip of the inner handle 7.

  The outer handle 10 drives the inner handle 7, and the outer handle 10 is formed by integrally joining two handle materials 10a and 10b, and the outside is covered with a resin cover 10c. A guide groove 15 curved in a gentle S-shape is formed on the side surface of the shorter handle material 10b, and the drive shaft 16 protruding from both sides of the inner handle 7 is engaged with the guide groove 15 in this way. The booster mechanism is configured by increasing the ratio of the distance between the action point (q) and the force point (r) with respect to the fulcrum (p) of the outer handle 10.

  When the outer handle 10 is pushed down, the inner handle 7 and the driver plate 14 are driven downward together with the drive shaft 16 engaged with the guide groove 15, and the leading staple 11 a supplied to the leading end of the magazine 6 is ejected from the ejecting portion 12. It is. Then, the leg portion of the staple is penetrated into the paper a placed on the binding table 2, and the paper a can be bound by being pressed against the clinch groove 17 provided on the binding table 2 and bent. When the binding is completed, the magazine 6, the inner handle 7, and the outer handle 10 are returned to the initial state of FIG. Only the book is sent and the next spell is prepared.

  According to the stapler having the above-described configuration, even if the force for pushing down the outer handle 10 is light, a much larger driving force can be obtained than when the driver plate 14 is pushed down directly by the inner handle 7, which is suitable for binding a large number of sheets.

  By the way, the base 1 is formed by covering the base member 1a made of metal with the base cover member 20 made of synthetic resin, and the clinch groove 17 is formed on the magazine guide 3 arranged below the base cover member 20. Positioning is fixed.

  That is, as shown in FIG. 3, the magazine guide 3 is a metal member having a U-shaped cross section and formed with high upstanding walls 21 on both sides of one end (rear end), along the longitudinal direction of the upper surface of the base member 1a. It is fixed. The upright wall 21 is provided with a first support shaft 5 (see FIG. 2) for supporting the magazine 6 and the inner handle 7. On the other end (front end) side of the magazine guide 3, a clincher mounting portion 22 is formed at a position corresponding to the launching portion 12 of the magazine 6. The left and right side wall portions 23 of the magazine guide 3 protrude slightly higher in the clincher mounting portion 22, and a positioning portion 25 that engages with the end portion of the clincher 24 is formed on the front end side thereof. The positioning portion 25 is configured by forming a step in the side wall portions 23. This step may be formed to such an extent that the abutment of the front end of the clincher 24 can be recognized by tactile sensation when the clincher 24 is slid forward from the rear along the clincher mounting portion 22. A screw hole 26 is formed at the bottom of the clincher mounting portion 22.

  Next, the clincher 24 is a substantially rectangular metal plate, a screw insertion hole 27 is formed at the center of the surface, and a clinching groove 17 is formed at one end. A pair of left and right protrusions 28 are formed on the back surface of the clincher 24. The outer widths of the protruding portions 28 are formed to be the same as the inner widths of the side wall portions 23 of the clincher mounting portion 22 of the magazine guide 3.

  Further, the base cover member 20 is formed with a recessed portion 30 at a position corresponding to the clincher mounting portion 22. Openings 31 are formed on both sides of the recessed portion 30 so as to expose both side wall portions 23 of the clincher mounting portion 22 of the magazine guide 3. Further, in the recessed portion 30, an insertion hole 32 corresponding to the screw insertion hole 27 of the clincher 24 is formed, and at a position corresponding to the clinching groove 17, a protrusion 33 protruding to the back side of the clinching groove 17 of the clincher 24. A groove 34 is formed to prevent interference. A notch 35 slightly larger than the protruding portion 28 is also formed at a position corresponding to the protruding portion 28 of the clincher 24.

  Next, when the clincher 24 is fixed to the magazine guide 3, the base cover member 20 is first fixed on the base member 1a. At this time, both side walls 23 of the clincher mounting portion 22 of the magazine guide 3 are exposed to the opening 31 of the recessed portion 30. Therefore, the clincher 24 is put into the recessed portion 30, and the clincher 24 is slid back and forth as shown in FIGS. 4, 5 and 6, and the front end thereof is brought into contact with the positioning portions 25 of the both side walls 23. Similarly, the clincher 24 is moved left and right so that the protruding portion 28 protruding from the notch to the back side of the base cover member 20 is engaged with the inner surfaces of the both side wall portions 23. As a result, the clincher 24 is positioned front-rear and left-right, and thereafter, the fixing screw 36 is inserted through the screw insertion holes 27 and 32 of the clincher 24 and the recessed portion 30 and fixed to the screw hole 26 at the bottom of the magazine guide 3. do it.

  As described above, the clincher 24 can be easily and reliably positioned in the front-rear direction and the left-right direction without using visual observation.

  Further, since the resin base cover member 20 can be attached, the appearance of the entire stapler is improved as shown in FIG. Furthermore, since the deep scale groove 37 can be formed in the resin base cover member 20, a positioning member 38 provided with means for engaging with and disengaging from the scale groove 37 is provided on the base cover member 20 along the longitudinal direction. The positioning member 38 can be surely stopped and held at a predetermined position by engaging the engaging / disengaging means with the scale groove 37 when positioning the end of the sheet so as to be slidable.

  The positioning means in the longitudinal direction of the magazine guide 3 of the clincher 24 described above is a form in which a step (positioning portion 25) is formed on the magazine guide 3 so that the front end of the clincher 24 abuts, but the present invention is not limited to this. The positioning means may be configured to position the rear end instead of the front end of the clincher.

  In addition, as shown in FIGS. 7A and 7B, the recess 40 formed at the upper edge of the side wall portions 23 of the magazine guide 3 and the rear surface of the clincher 24 protrude to fit into the recess 40. You may form with the convex part 41. FIG. According to this configuration, since the position of the clincher 24 in the longitudinal direction is determined at the position where the convex portion 41 is fitted to the concave portion 40, the positioning can be easily and reliably performed without a jig.

  Further, the positioning means on both the left and right sides of the clincher are not limited to those that form a pair of protruding portions 28 on the back surface of the clincher 24. The projecting portion may be continuous from side to side and integrated.

  In the above-described base cover member 20, the bottom of the recessed portion 30 is left in order to smooth the flow of the molding material during resin molding. However, the recessed portion 30 may be entirely opened.

It is a perspective view of one embodiment of a stapler concerning the present invention. It is a longitudinal cross-sectional view of the said stapler. It is a disassembled perspective view which mainly shows the positional relationship of a clincher, a base cover member, and a magazine guide. It is a top view which shows the state by which the clincher was fixed to the magazine guide. It is sectional drawing on the XX line of FIG. It is sectional drawing on the YY line of FIG. (A) and (b) are the top views and center longitudinal cross-sectional views of the principal part which show the other example of the positioning means.

Explanation of symbols

a paper 1 base base 1a metal base member 3 magazine guide 6 magazine 20 base cover member 24 clincher 25 positioning portion 28 protruding portion

Claims (5)

A magazine guide having a U-shaped cross-section is fixed along the longitudinal direction of the upper surface of the base member, and a staple storage magazine is pivotally supported at one end of the magazine guide, and at the other end of the magazine guide, In the stapler in which the clincher is placed and fixed on both side wall portions of the U-shaped cross section of the magazine guide at the portion corresponding to the leading portion of the staple storing magazine,
A stapler characterized in that the both side walls and the clincher are positioned by positioning means in the longitudinal direction of the magazine guide and positioning means in both sides of the magazine guide.   The positioning means in the longitudinal direction of the magazine guide is a positioning portion that protrudes from an upper end edge of the both side wall portions and engages with an end portion of the clincher in the longitudinal direction of the magazine guide. The stapler according to 1.   The positioning means in the longitudinal direction of the magazine guide is formed by a concave portion formed at the upper edge of the both side wall portions and a convex portion protruding from the back surface of the clincher and fitting into the concave portion. The stapler according to claim 1.   The stapler according to claim 1, 2 or 3, wherein the positioning means in the left and right side directions of the magazine guide is a protruding portion that protrudes from the back surface of the clincher and engages with the inner surfaces of the both side wall portions. . A base cover member that covers the base member is provided, and an opening that exposes at least the upper edge of the left and right side walls of the clincher mounting portion of the magazine guide is formed in a portion corresponding to the clincher of the base cover member. The stapler according to claim 1, 2, 3, or 4.

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