Stapler

Abstract

To provide a stapler improved in durability.SOLUTION: A stapler 1 includes a needle ejecting portion 2 that ejects a needle and a needle-leg bending portion 3 that bends a needle leg of the needle ejected by the needle ejecting portion 2. The needle-leg bending portion 3 has: a clincher 31 having a guide surface 31a that bends a needle leg; a clincher guide 32 that is supported to be movable in a first direction, which is a direction in which the needle-ejecting portion 2 approaches the needle-leg bending portion 3; a slider 33 that is supported to be movable along a second direction intersecting the first direction and is movable between a first position where the movement of the clincher guide 32 in the first direction is restricted and a second position where the restriction of the movement of the clincher guide 32 in the first direction is released; and a clincher switch 34 that is supported to be movable along the first direction and moves the slider 33 to the second position. The clincher switch 34 is located on a side opposite to a connecting portion, which connects the needle ejecting portion 2 and the needle-leg bending portion 3 so as to relatively move closer to and away from each other, with the clincher 31 interposed therebetween.SELECTED DRAWING: Figure 1A

Description

[Technical field]

[0001] The present invention relates to a stapler that staples papers together. [Background technology]

[0002] A stapler that staples papers by penetrating the paper with the foot of a staple shaped like a U and bending it on the back side of the paper is configured to comprise a magazine that stores staples, a handle section equipped with a driver that shoots the staples stored in the magazine toward the paper, and a clincher section equipped with a clincher that bends the foot of the staple that is shot out of the magazine and penetrates the paper, all of which are supported rotatably at their rear ends.

[0003] In a stapler known as a flat clinch, in which the staple foot of the staple penetrates the paper and then is bent so that it fits tightly against the back surface of the paper, the clincher section has a paper mounting member for supporting the paper in an upper position relative to the clincher until the staple foot penetrates the paper and the staple crown comes into contact with the paper, and a slider for holding this paper mounting member in an upper position, and these parts are assembled to a clincher arm (see, for example, Patent Document 1).

[0004] In a stapler called a flat clinch, a link that moves the slider in a linear motion is provided on the handle portion. The link extends from the handle portion to the clincher portion between the position where the clincher is provided and the rear end where the handle portion and the clincher portion are connected, and transmits the movement of the handle portion to the slider to operate the slider.

[0005] Also proposed is a configuration in which a regulating piece (corresponding to a slider) that moves in a linear motion and a driving piece (corresponding to a link) that is activated when pressed by an upper operating frame (corresponding to a handle portion) are connected via an axis (see, for example, Patent Document 2).

[0006] In such a conventional stapler, a transmission member such as a link extends from the handle portion to the clincher portion between the position where the clincher is provided and the rear end portion where the handle portion and the clincher portion are connected. For this reason, it is not possible to insert paper beyond the link toward the rear end portion, and therefore, it is not suitable for use in a stapler of a type called saddle stitching, which staples near the center of paper.

[0007] In response to this, a stapler has been proposed that can be used for saddle stitching by rotating on an axis as a fulcrum and pushing an L-shaped main body, which functions as a slider, through the paper (see, for example, Patent Document 3). [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2003-311647 A [Patent Document 2] Utility Model Application Publication No. 4-23270 [Patent Document 3] Patent No. 5065411 Summary of the Invention [Problem to be solved by the invention]

[0009] In Patent Document 3, the L-shaped main body is integrally formed with a part pressed by the paper and a part that functions as a slider that switches the operation of the upper bottom member, and rotates around an axis. However, the L-shaped main body is prone to wear on the axis and the part that receives the axis due to repeated rotation, and when the axis and the part that receives the axis wear out, the amount of movement of the part that functions as a slider deviates from a specified range, which may cause a malfunction in which the timing at which the upper bottom member operates is shifted. For this reason, if the L-shaped main body is made of resin, the durability of the stapler decreases, and if it is made of metal, the stapler becomes expensive.

[0010] The present invention has been made to solve such problems, and an object of the present invention is to provide a stapler with improved durability. [Means for solving the problem]

[0011] In order to solve the above-mentioned problems, the present invention provides a needle launching unit that launches needles, a needle foot bending unit that bends the needle foot of the needle launched by the needle launching unit, and a connecting unit that connects the needle launching unit and the needle foot bending unit so as to be movable in directions approaching and separating relative to each other, the needle foot bending unit including a clincher having a guide surface that bends the needle foot, a clamping unit that clamps paper between the needle launching unit and the clincher, and an opening that exposes the guide surface to the clamping unit, the clincher guide being supported so as to be movable in a first direction in which the needle launching unit approaches the needle foot bending unit, a slider being supported so as to be movable along a second direction intersecting the first direction, and being movable between a first position that restricts the movement of the clincher guide in the first direction and a second position that releases the restriction on the movement of the clincher guide in the first direction, and and a clincher switch that is movably supported by the connecting portion and moves the slider to a second position by moving in a first direction, the staple launching portion has a pressing portion that presses the clincher switch in the first direction, the clincher switch is located on the opposite side of the connecting portion across the clincher, protrudes toward the staple launching portion, and has a pressed portion that is pressed by the pressing portion through the paper, and an acting portion that presses the slider in the second direction by moving in the first direction, the slider has an acted upon portion that is pressed by the acting portion and an engaging portion that moves along the second direction, the clincher guide has an engaged portion that engages with the engaging portion, and a retraction portion that is provided adjacent to the engaged portion along the second direction and into which the engaging portion enters, and when the engaging portion enters the retraction portion, the stapler moves in the opposite direction to the staple launching portion along the first direction.

[0013] In the present invention, when a sheet of paper is placed in the clamping section and the staple launching section and the staple foot bending section move in a direction in which they approach each other relatively, the pressing section of the staple launching section comes into contact with the paper, and the pressed section of the clincher switch is pressed in a first direction via the paper.

[0014] When the clincher switch moves in the first direction, the acting portion presses the acted portion of the slider, and the slider is pushed in the second direction. When the slider moves in the second direction, the locking portion of the slider moves from a position facing the locked portion of the clincher guide to a position facing the retracted portion, and the clincher guide becomes movable in the first direction.

[0015] As a result, the clamping portion of the clincher guide is pressed through the paper, and the clincher guide moves in the first direction. As the clincher guide moves in the first direction, the staple legs of the staple that have penetrated the paper are pressed against the guide surface of the clincher, and the pair of staple legs are bent inward toward each other to staple the paper. Effect of the Invention

[0016] According to the present invention, the clincher switch pressed by the paper and the slider that activates the clincher guide are made of separate parts, allowing them to move in a linear motion relative to each other. Compared to a configuration in which they move in a rotational motion, wear on each part during continuous use is reduced, improving the durability of the stapler.

[0017] Furthermore, according to the present invention, the paper can be stapled in a saddle stitch manner in which the paper is stapled near the center between one end and the other end, and the staple foot that penetrates the paper can be folded in such a way that it fits closely along the back surface of the paper. [Brief description of the drawings]

[0018] [Figure 1A] 1 is a side cross-sectional view of a main portion showing an example of a stapler according to an embodiment of the present invention. [Figure 1B] 1 is an overall cross-sectional side view showing an example of a stapler according to an embodiment of the present invention; [Figure 1C] 1 is an overall side view showing an example of a stapler according to an embodiment of the present invention; [Figure 1D] 1 is an overall top view showing an example of a stapler according to an embodiment of the present invention; [Figure 1E] FIG. 2 is an overall bottom view showing an example of a stapler according to the present embodiment. [Figure 1F]1 is an overall perspective view showing an example of a stapler according to an embodiment of the present invention; [Diagram 2] 1 is an explanatory diagram showing an example of a staple used in the stapler of the present embodiment. FIG. [Figure 3A] 10A to 10C are side cross-sectional views of essential parts illustrating an example of an operation of the stapler according to the embodiment. [Figure 3B] 10A to 10C are side cross-sectional views of essential parts illustrating an example of an operation of the stapler according to the embodiment. [Figure 4A] 11 is a front view of a main portion illustrating an example of an operation of the stapler according to the embodiment. FIG. [Figure 4B] 11 is a front view of a main portion illustrating an example of an operation of the stapler according to the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a stapler according to the present invention will be described with reference to the drawings.

[0020] <Example of the configuration of the stapler according to the present embodiment> Fig. 1A is a side cross-sectional view of a main part showing an example of a stapler of the present embodiment, and Fig. 1B is a side cross-sectional view of the entire stapler of the present embodiment. Fig. 1C is a side view of the entire stapler of the present embodiment, Fig. 1D is a top view of the entire stapler of the present embodiment, Fig. 1E is a bottom view of the entire stapler of the present embodiment, and Fig. 1F is a perspective view of the entire stapler of the present embodiment. Fig. 2 is an explanatory view showing an example of a needle used in the stapler of the present embodiment.

[0021] The stapler 1 comprises a needle firing section 2 which fires out needles 10 called staples as shown in FIG. 2, a needle foot bending section 3 which bends a pair of needle feet 11 of the needle 10 fired by the needle firing section 2, and a connecting section 4 which connects the needle firing section 2 and the needle foot bending section 3 so that they can move toward and away from each other.

[0022] In stapler 1, the direction in which staple driving unit 2 and staple foot bending unit 3 move toward each other relative to each other is referred to as a first direction, and the direction intersecting with the first direction is referred to as a second direction.

[0023] The needle firing unit 2 includes a magazine 20 that stores the needles 10, a driver 21 that fires the needles 10 stored in the magazine 20, and a handle unit 22 that operates the driver 21. In the needle firing unit 2, the magazine 20 and the handle unit 22 are connected to be rotatable about a shaft 23 as a fulcrum.

[0024] The magazine 20 is configured to be capable of storing a needle assembly (not shown) to which a predetermined number of needles 10 are connected, and is provided with a needle ejection port 20a through which the needles 10 separated from the needle assembly pass, at the front end opposite to the side where the shaft 23 is provided. The magazine 20 also has a spring 20c that presses the needle assembly against the magazine front wall 20b via a pusher 20d.

[0025] The driver 21 is attached to a handle portion 22, and as the handle portion 22 rotates about an axis 23, the driver 21 moves along the magazine front wall 20b, separating one needle 10 from the needle connector and ejecting it from the needle ejection port 20a.

[0026] The staple foot bending unit 3 includes a clincher 31 having a guide surface 31a for bending the staple foot 11. The staple foot bending unit 3 also includes a clamping portion 32a for clamping paper between the clincher 31 and the magazine 20 of the staple driving unit 2, and a clincher guide 32 having an opening 32b for exposing the guide surface 31a of the clincher 31 to the clamping portion 32a. The staple foot bending unit 3 also includes a slider 33 that is movable between a first position for restricting the movement of the clincher guide 32 in the first direction and a second position for releasing the restriction on the movement of the clincher guide in the first direction, and a clincher switch 34 for moving the slider 33 to the second position.

[0027] The clincher 31 is attached to the base 30 of the needle foot bending section 3 with a guide surface 31a having a groove shaped to guide the pair of needle feet 11 of the needle 10 in a direction to bend them inward, facing upward, which is the direction opposite the needle firing section 2.

[0028] The clincher guide 32 has a clamping portion 32a disposed opposite the magazine 20 of the staple shooting unit 2, and an opening 32b disposed in the clamping portion 32a opposite the staple shooting opening 20a of the magazine 20.

[0029] The clincher guide 32 is supported on the base 30 of the needle foot bending section 3 so as to be movable by rotational or linear motion in the direction of the arrow A1 which is a first direction, and in the direction of the arrow A2 which is opposite to the arrow A1.

[0030] The slider 33 is an example of a clincher guide operating member, and is supported so as to be movable linearly relative to the base 30 of the needle foot bending section 3 in the direction of arrow B1, which is a second direction intersecting the first direction, and in the direction of arrow B2, which is opposite to arrow B1.

[0031] The clincher switch 34 is provided on the opposite side of the connecting portion 4 across the clincher 31, and is supported so as to be movable linearly relative to the base 30 of the needle foot bending portion 3 in the direction of arrow A1 (first direction) and the direction of arrow A2.

[0032] The clincher switch 34 protrudes from the clamping portion 32a of the clincher guide 32 in the direction of the staple driving portion 2, and includes a pressed portion 34a that is pressed through the paper, and an action portion 34b that presses the slider 33 in the direction of the arrow B1 (second direction) when the clincher switch 34 moves in the direction of the arrow A1. The action portion 34b is configured as a slope inclined in a direction such that the upper side indicated by the arrow A2 is close to the slider 33 and the lower side indicated by the arrow A1 is away from the slider 33, with respect to the movement direction of the clincher switch 34 indicated by the arrows A1 and A2.

[0033] The slider 33 includes an acted portion 33a that is pressed by an acting portion 34b of the clincher switch 34, and a locking portion 33b that moves along the directions of the arrows B1 and B2 as the slider 33 moves in the directions of the arrows B1 and B2.

[0034] The slider 33 is provided at one end along the movement direction indicated by the arrows B1 and B2 with the acted upon portion 33a facing the acting portion 34b of the clincher switch 34. The slider 33 is also provided on the surface facing the clincher guide 32 with a locking portion 33b shaped so that the clincher protrudes in the direction of the arrow A2 toward the guide 32.

[0035] The clincher guide 32 includes an engaged portion 32c that engages with the engaging portion 33b of the slider 33, and a retracted portion 32d into which the engaging portion 33b of the slider 33 fits.

[0036] The clincher guide 32 is provided on its surface facing the slider 33 with a locked portion 32c that protrudes in the direction of arrow A1 toward the slider 33. The clincher guide 32 is also provided on its surface facing the slider 33 with a retracted portion 32d that is recessed in the direction of arrow A2 opposite to the direction of arrow A1 in which the locked portion 32c protrudes, adjacent to the locked portion 32c along the direction of arrow B1.

[0037] The clincher guide 32 is biased by a spring 32e in the direction of arrow A2 in which the clamping portion 32a approaches the needle firing portion 2. The slider 33 is biased by a spring 33c in the direction of arrow B2 in which the acted upon portion 33a approaches the acting portion 34b of the clincher switch 34. The clincher switch 34 is biased by a spring 34c in the direction of arrow A2 in which the pressed portion 34a protrudes from the clamping portion 32a of the clincher guide 32 in the direction of the needle firing portion 2.

[0038] The clincher guide 32 is biased by a spring 32e in the direction of arrow A2 in which the clamping portion 32a approaches the needle driving portion 2, and the state in which the locked portion 32c is locked to the locking portion 33b of the slider 33 is referred to as the standby position of the clincher guide 32.

[0039] The slider 33 is urged by spring 33c in the direction of arrow B2 in which the acted portion 33a approaches the acting portion 34b of the clincher switch 34, and the engaging portion 33b moves to a position opposite the engaged portion 32c of the clincher guide 32, so that the engaging portion 33b engages with the engaged portion 32c.The first position in which the engaging portion 33b restricts the movement of the clincher guide 32 in the first direction is called the standby position of the slider 33.

[0040] The clincher switch 34 is biased by spring 34c in the direction of arrow A2 in which the pressed portion 34a protrudes from the clamping portion 32a of the clincher guide 32 toward the needle firing portion 2, and the acting portion 34b is not pressing the acted upon portion 33a of the slider 33, in this example, the state in which the acting portion 34b is separated from the acted upon portion 33a, is referred to as the standby position of the clincher switch 34.

[0041] The staple driving unit 2 includes a pressing unit 24 that activates a clincher switch 34. The pressing unit 24 is shaped to protrude in the direction of the staple foot bending unit 3, and is provided on the handle unit 22 opposite a pressed portion 34a of the clincher switch 34.

[0042] In the stapler 1, the staple launching section 2 and the connecting section 4 are connected by a connecting member 25, and the staple foot bending section 3 and the connecting section 4 are connected by a connecting member 35. In the present example, the staple launching section 2 and the staple foot bending section 3 move relatively toward and away from each other as the connecting member 25 flexes. In the stapler 1, the distance L between the clincher 31, which is the binding position of the paper, and the connecting section 4 is set so that the clincher 31 faces the center between one end and the other end of the paper placed between the staple launching section 2 and the staple foot bending section 3, so that the stapler 1 can bind the paper in a so-called saddle stitch form. In addition, in the stapler 1, no member is provided between the clincher 31 and the connecting section 4 that passes between the staple launching section 2 and the staple foot bending section 3 to transmit the movement.

[0043] The stapler 1 includes an insertion position regulating unit 5 that regulates the insertion position of the paper. The insertion position regulating unit 5 is supported movably along a connecting member 35 in a direction approaching and moving away from the position (stapling position) of the clincher 31 shown in Figures 1A and 1B. By inserting the paper to a position where it abuts against the insertion position regulating unit 5, it is possible to regulate the distance from the edge of the paper to the stapling position.

[0044] The insertion position regulating part 5 includes a dial 50 that fixes its position relative to the connecting member 35. The dial 50 is provided coaxially with a screw (not shown), connects the left and right sides of the insertion position regulating part 5 on the underside of the connecting member 35, and an action member 51 that acts on one side and the other side of the connecting member 35 is moved by fastening the screw, thereby sandwiching the connecting member 35 from both the left and right sides of the insertion position regulating part 5. As a result, the insertion position regulating part 5 can be fixed to or released from the connecting member 35 by operating the single dial 50.

[0045] The stapler 1 is provided with an alignment mark 6a indicating a target staple position in the staple driving unit 2, and an alignment mark 6b in the staple foot bending unit 3. The alignment mark 6a is configured by providing a three-dimensional mark with projections and recesses, a two-dimensional mark by printing, or the like on the upper surface of the handle unit 22 in accordance with the position of the clincher 31 shown in Figures 1A and 1B. The alignment marks 6b are configured by providing a three-dimensional mark with projections and recesses, a two-dimensional mark by printing, or the like on the upper surface of the base 30 on both the left and right sides of the clincher guide 32 in accordance with the position of the clincher 31 shown in Figures 1A and 1B.

[0046] <Example of operation of the stapler according to the present embodiment> 3A and 3B are side cross-sectional views of the essential parts showing an example of the operation of the stapler of the present embodiment, and FIGS. 4A and 4B are front views of the essential parts showing an example of the operation of the stapler of the present embodiment.

[0047] In the stapler 1, when a paper sheet P is placed in the clamping portion 32a and the handle portion 22 is pushed in the direction of the arrow A1 to move the staple firing portion 2 toward the staple foot bending portion 3, the magazine 20 comes into contact with the paper sheet P. When the handle portion 22 is further pushed in the direction of the arrow A1 with the magazine 20 in contact with the paper sheet P, the handle portion 22 rotates with respect to the magazine 20 about the shaft 23 as a fulcrum, and the staples 10 stored in the magazine 20 are fired from the staple firing opening 20a by the driver 21. When the staples 10 are fired from the staple firing opening 20a with the magazine 20 in contact with the paper sheet P, the staple feet 11 penetrate the paper sheet P. Then, the staple feet 11 that have penetrated the paper sheet P enter the opening 32b of the clincher guide 32.

[0048] In addition, when the handle portion 22 of the stapler 1 is pressed further in the direction of the arrow A1 while the magazine 20 is in contact with the paper P, the pressing portion 24 comes into contact with the paper P and presses the pressed portion 34a of the clincher switch 34 in the direction of the arrow A1 via the paper P.

[0049] The clincher switch 34 is pressed by the pressing portion 24 through the paper P, and moves in the direction of the arrow A1 while compressing the spring 34c. When the clincher switch 34 moves in the direction of the arrow A1, the action portion 34b comes into contact with the acted portion 33a of the slider 33. Since the action portion 34b is formed of a slope inclined in a predetermined direction, when the clincher switch 34 moves in the direction of the arrow A1 with the action portion 34b in contact with the acted portion 33a of the slider 33, a force is generated that presses the acted portion 33a in the direction of the arrow B1, and as shown in FIG. 3A, the slider 33 moves in the direction of the arrow B1 while compressing the spring 33c.

[0050] When the slider 33 moves in the direction of the arrow B1 from the standby position (first position) to the second position, the locking portion 33b moves from a position facing the locked portion 32c of the clincher guide 32 to a position facing the retreating portion 32d. When the locking portion 33b of the slider 33 moves to a position facing the retreating portion 32d of the clincher guide 32, the clincher guide 32 becomes movable in the direction of the arrow A1.

[0051] As a result, when the handle portion 22 of the stapler 1 is pushed further in the direction of the arrow A1 with the magazine 20 in contact with the paper P, as shown in Figure 3B, the clamping portion 32a of the clincher guide 32 is pushed through the paper P, and the clincher guide 32 moves in the direction of the arrow A1 while compressing the spring 32e.

[0052] When the clincher guide 32 moves in the direction of the arrow A1, the staple legs 11 of the staples 10 that have penetrated the paper P are pressed against the guide surface 31a of the clincher 31, and a force is applied to bend the pair of staple legs 11 inwardly due to the shape of the guide surface 31a, as shown in Fig. 4A. As a result, as shown in Fig. 4B, the staple legs 11 that have penetrated the paper P are bent so as to be in close contact with the back surface of the paper P, and the paper P is stapled.

[0053] In the stapler 1, the clincher switch 34 pressed by the paper and the slider 33 that activates the clincher guide 32 are separate parts, allowing them to move in a linear motion. This reduces wear on each part during continuous use and improves durability, compared to a configuration in which the part corresponding to the clincher switch and the part corresponding to the slider are integrally formed and this part moves in a rotating motion.

[0054] Also, by configuring the acting portion 34b of the clincher switch 34 as a slope and configuring the acted portion 33a of the slider 33 to move along the slope, the contact surface can be widened, suppressing wear of the parts under continuous use and improving durability. Furthermore, since the contact pressure can be reduced, the pressing portion 24 of the handle portion 22, the clincher switch 34, the slider 33 and the clincher guide 32 can be made of plastic without reducing durability, realizing an inexpensive and lightweight structure. The acted portion 33a of the slider 33 may be configured as a slope.

[0055] Furthermore, when the slider 33 moves to a standby position where the locking portion 33b of the slider 33 locks with the locked portion 32c of the clincher guide 32, and the clincher switch 34 moves to a standby position where the pressed portion 34a of the clincher switch 34 protrudes from the clamping portion 32a of the clincher guide 32 toward the staple driving portion 2, the acting portion 34b of the clincher switch 34 moves away from the acted portion 33a of the slider 33. This makes it possible to prevent the slider 33 from accidentally operating in the early stage when the clincher switch 34 is pressed through the paper P, and reduces the possibility of a malfunction that causes the timing of the clincher guide 32 to be shifted.

[0056] Furthermore, between the clincher 31 and the connecting portion 4, there is no member that passes between the staple launching portion 2 and the staple foot bending portion 3 to transmit the movement. This allows the distance L between the clincher 31, which is the binding position of the paper, and the connecting portion 4 to be set so that the clincher 31 faces the vicinity of the center between one end and the other end of the paper placed between the staple launching portion 2 and the staple foot bending portion 3. Therefore, in a so-called saddle stitch form, the staple foot 11 that penetrates the paper P is folded so as to be in close contact with the back surface of the paper P, and the paper P can be bound. The distance L can be set to a distance that allows binding near the center of, for example, 257 mm, which is the vertical length of a B5 size paper, to 594 mm, which is the vertical length of an A2 size paper, so that the paper can be bound in a saddle stitch form according to the paper size.

[0057] In the stapler 1 described above, the clincher 31 is fixed at a predetermined position, but in the standby position it is spring-loaded in the direction of arrow A2 so that the guide surface 31a is exposed on approximately the same plane as the clamping portion 32a of the clincher guide 32 and is pushed by the staple foot 11 of the staple 10 to move in the direction of arrow A1. [Explanation of symbols]

[0058] 1 stapler, 2 staple firing section, 20 magazine, 20a staple firing port, 20b magazine front wall, 20c spring, 21 driver, 22 handle section, 23 shaft, 24 pressing section, 3 staple foot bending section, 30 base, 31 clincher, 31a guide surface, 32 clincher guide, 32a clamper holding portion, 32b opening, 32c engaged portion, 32d retracting portion, 32e spring, 33 slider (clincher guide operating member), 33a acted portion, 33b engaging portion, 33c spring, 34 clincher switch, 34a pressed portion, 34b acting portion, 34c spring, 4 connecting portion, 10 needle, 11 needle foot

Claims

1. A needle firing unit that fires needles; a needle foot bending unit that bends the needle foot of the needle driven out by the needle driving unit; a connecting portion that connects the needle driving portion and the needle foot bending portion so as to be movable in a direction in which the needle drives the needle and the needle foot bending portion approach each other and move away from each other; The needle foot bending portion is A clincher having a guide surface for bending the needle foot; a clamping section that clamps the paper between the staple driving section and the clincher guide, the clincher guide including an opening that exposes the guide surface to the clamping section, and the clincher guide being supported so as to be movable in a first direction in which the staple driving section approaches the staple foot bending section; a slider supported movably along a second direction intersecting the first direction and movable between a first position that restricts the movement of the clincher guide in the first direction and a second position that releases the restriction on the movement of the clincher guide in the first direction; a clincher switch that is supported movably along the first direction and moves the slider to the second position by moving in the first direction; the staple driving unit has a pressing unit that presses the clincher switch in the first direction, The clincher switch is located on the opposite side of the clincher from the connecting portion, protrudes toward the staple driving portion, and has a pressed portion that is pressed by the pressing portion through the paper, and an acting portion that presses the slider in the second direction by moving in the first direction, the slider has an acted portion that is pressed by the acting portion and a locking portion that moves along the second direction, The clincher guide has an engaged portion that engages with the engaging portion, and a retreat portion that is provided adjacent to the engaged portion along the second direction and into which the engaging portion enters. When the engaging portion enters the retreat portion, the clincher guide moves in the opposite direction to the needle driving portion along the first direction. Stapler.

2. One of the acting portion of the clincher switch and the acted portion of the slider is configured with a slope inclined with respect to the first direction.

2. The stapler of claim 1.

3. When the slider moves to the first position, the locking portion of the slider is in a position where it locks with the locked portion of the clincher guide, and when the clincher switch is in a standby position where the pressed portion of the clincher switch protrudes from the clamping portion of the clincher guide toward the needle driving portion, the acting portion of the clincher switch separates from the acted portion of the slider.

3. The stapler according to claim 1 or 2.

Images