Stapler

Abstract

The invention provides a stapler which can suppress inclination of a driver and equalize force applied to a pair of stitches. A stapler (1A) is provided with: a punching device (2A) for punching a binding needle (10), which is composed of a needle crown (10a), a first stitch (10b), and a second stitch (10c), into paper; a driver shaft (3A) that moves in the driving direction of the binding needle (10); and a driver attachment part (4A) that supports the driver (2A) so that the driver (2A) can rotate in the axial direction of the needle crown (10a) with respect to the driver shaft (3A) in a state in which the binding needle (10) is disposed at the driving position.

Description

Technical Field

[0001] The present invention relates to a stapler for binding sheets of paper using staples. Background Art

[0002] There is proposed a stapler in which a driver for driving a binding needle (staple) is supported by a driver shaft (for example, see Patent Document 1). In such a stapler, both left and right sides of the driver are supported by the driver shaft.

[0003] In addition, there has been proposed a technique for pressing the center of a driver via a T-bolt for adjusting the vertical position of the driver (for example, see Patent Document 2).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 4513443

[0007] Patent Document 2: Japanese Patent No. 3346194 Summary of the invention

[0008] Problems to be solved by the invention

[0009] In conventional staplers, when the driver shaft (pin) tilts due to bending or the like, the driver tilts accordingly. If the driver tilts, the force applied to one pin and the force applied to the other pin differ when the driver presses the staples. As a result, the forces applied to the pair of pins are unequal, which may cause the staples to bend.

[0010] Therefore, a stapler is provided which suppresses the inclination of a driver and makes the force applied to a pair of staples uniform.

[0011] Technical solutions to solve problems

[0012] In order to solve the above-mentioned problems, the present invention provides a stapler, comprising: a punching device for punching a binding needle composed of a crown and a pair of legs into a paper; a bending portion for bending the legs that have punched the paper and penetrated the paper; and a supporting portion for supporting the punching device in a manner that allows it to move along the punching direction of the binding needle, wherein the supporting portion supports the punching device in a manner that allows it to rotate along the axial direction of the crown when the binding needle is set in a punching position.

[0013] In the present invention, the driver and the support part rotate relative to each other along the axial direction of the crown portion when the stapler is set at the driving position, thereby suppressing the driver from tilting relative to the axial direction of the crown portion when the stapler is set at the driving position.

[0014] Effects of the Invention

[0015] In the present invention, when the driver drives the staple needle, the first and second legs of the staple needle are substantially equally stressed, thereby suppressing the occurrence of bending of the staple needle caused by uneven forces applied to the first and second legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A It is a perspective view showing an example of the binding device according to the present embodiment.

[0017] Figure 1B It is a front cross-sectional view showing an example of the binding device according to the present embodiment.

[0018] Figure 2A It is a front cross-sectional view showing an example of the stapler according to the present embodiment.

[0019] Figure 2B It is a side view showing an example of the stapler according to the present embodiment.

[0020] Figure 2C It is a front view showing an example of the stapler according to the present embodiment.

[0021] Figure 3 It is a front cross-sectional view showing an example of the operation of the stapler according to the present embodiment.

[0022] Figure 4A It is a front cross-sectional view showing an example of the operation of the stapler according to the present embodiment.

[0023] Figure 4B It is a front cross-sectional view showing an example of the operation of the stapler according to the present embodiment.

[0024] Figure 5A It is a perspective view showing a modified example of the stapler according to the present embodiment.

[0025] Figure 5B It is a perspective view showing a driver of a modified example of the stapler according to the present embodiment.

[0026] Fig. 6A It is a perspective view showing another modified example of the stapler according to the present embodiment.

[0027] Figure 6B It is a perspective view showing a driver of another modified example of the stapler according to the present embodiment.

[0028] Fig. 7A It is a perspective view showing another modified example of the stapler according to the present embodiment.

[0029] Figure 7B It is a perspective view showing a driver of another modified example of the stapler according to the present embodiment. DETAILED DESCRIPTION

[0030] Hereinafter, an example of an embodiment of a stapler and a binding device including the stapler according to the present invention will be described with reference to the drawings.

[0031] <Configuration Example of Stapler of the Present Embodiment>

[0032] Figure 1A is a perspective view showing an example of a binding device according to the present embodiment, Figure 1B 2 is a front cross-sectional view showing an example of a binding device according to the present embodiment. Figure 2A is a front cross-sectional view showing an example of the stapler of this embodiment, Figure 2B is a side view showing an example of the stapler of this embodiment, Figure 2C It is a front view showing an example of the stapler according to the present embodiment. Figure 2A yes Figure 2B AA line section view.

[0033] The binding device 100A includes at least one stapler 1A and a driving unit 6 for driving the stapler 1A. Figure 1A , Figure 1B In the example of FIG. 1 , two staplers 1A1 and 1A2 are driven by a single drive unit 6. In addition, a binding device including the stapler 1A and the drive unit 6 may also be referred to as a stapler.

[0034] The stapler 1A includes a punching device 2A that punches a staple 10 and punches a pair of legs into a sheet of paper P, a punching device shaft 3A that moves the punching device 2A, and a punching device mounting portion 4A that rotatably supports the punching device 2A and connects the punching device 2A to the punching device shaft 3A. In addition, the stapler 1A includes a bending portion 7 that bends a pair of legs of the staple 10 that punches into the sheet of paper P and penetrates the sheet of paper P.

[0035] The binding needle 10 has a first pin 10b, one of a pair of legs bent in the driving direction of the binding needle 10 indicated by arrow A1, formed at one end of the needle crown 10a as the crown portion. In addition, the binding needle 10 has a second pin 10c, the other of a pair of legs bent in the driving direction of the binding needle 10, formed at the other end of the needle crown 10a. The extending direction of the needle crown 10a is referred to as the axial direction.

[0036] The punching device 2A is supported in a manner that allows it to move in the punching direction of the binding needle 10 and in the direction opposite to the punching direction of the binding needle 10. The punching device 2A is in the shape of a rectangular plate, and the punching direction of the binding needle 10 is the long side direction. The punching device 2A has a pressing portion 20A at the end along the punching direction of the binding needle 10 for pressing the needle crown 10a of the binding needle 10. The pressing portion 20A is composed of the side in the short side direction of the punching device 2A and extends along the axial direction of the needle crown 10a. The length of the pressing portion 20A of the punching device 2A in the extension direction (the width in the left-right direction) is approximately the same as the axial length of the needle crown 10a.

[0037] The punch shaft 3A is an example of a supporting portion, and extends along the axial direction of the needle crown 10a when the binding needle 10 is set in the driving position. The axial direction of the needle crown 10a when the binding needle 10 is set in the driving position is indicated by arrow B. The axial extension of the punch shaft 3A along the needle crown 10a refers to not only the case where the punch shaft 3A extends parallel to the axial direction of the needle crown 10a, but also the case where it extends obliquely relative to the axial direction of the needle crown 10a. The same applies to the punch shaft of the modified example described later. The punch shaft 3A is driven by a driving unit 6 composed of a motor, gears, etc., and moves in the driving direction of the binding needle 10 and in the direction opposite to the driving direction.

[0038] The punch mounting portion 4A is an example of a supporting portion, and includes an action portion 40A that receives a force moving in the driving direction of the binding needle 10 and a force moving in the opposite direction. The action portion 40A is disposed at two locations separated by a specified interval along a left-right direction intersecting the driving direction of the binding needle 10 and the opposite direction. A pair of action portions 40A are disposed at an interval wider than the width of the punch 2A along the axial direction of the needle crown 10a. The action portion 40A is composed of a hole for the punch shaft 3A to enter. When the action portion 40A is a square hole, the length of the first side and the second side orthogonal to the first side are substantially the same as the diameter of the punch shaft 3A. In addition, when the action portion 40A is a circular hole, its diameter is substantially the same as the diameter of the punch shaft 3A.

[0039] The punching device mounting portion 4A is provided with a support shaft 41A that supports the punching device 2A in a rotatable manner. The support shaft 41A is provided on the side opposite to the punching direction of the stapler 10 relative to the action portion 40A. The support shaft 41A is cylindrical, and the axial direction of the cylinder is orthogonal to the punching device shaft 3A. The center of a pair of action portions 40A of the punching device mounting portion 4A is aligned with the center of the support shaft 41A. That is, it is configured so that the distance L1 from one action portion 40A to the center O of the support shaft 41A is equal to the distance L2 from the other action portion 40A to the center O of the support shaft 41A. The distance L1 from one action portion 40A to the center O of the support shaft 41A and the distance L2 from the other action portion 40A to the center O of the support shaft 41A are distances along the extension direction of the punching device shaft 3A entering the action portion 40A. Thus, the support shaft 41A is provided at the center of the interval between the pair of action portions 40A.

[0040] The end of the driver 2A in the opposite direction to the driving direction of the staple needle 10 is supported by the driver mounting portion 4A by the support shaft 41A. The driver 2A is configured such that the distance L10 from one end of the pressing portion 20A to the center O of the support shaft 41A is equal to the distance L20 from the other end of the pressing portion 20A to the center O of the support shaft 41A. The distance L10 from one end of the pressing portion 20A to the center O of the support shaft 41A and the distance L20 from the other end of the pressing portion 20A to the center O of the support shaft 41A are distances along the extending direction of the pressing portion 20A. Thus, the center of the driver 2A along the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position is supported by the support shaft 41A. Moreover, the driver 2A and the driver mounting portion 4A relatively rotate along the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position with the support shaft 41A as a fulcrum.

[0041] The stapler 1A includes a guide portion 5A for guiding a driver 2A that moves in a driving direction of a staple needle 10 and in a direction opposite thereto in the driving direction of the staple needle 10 and in a direction opposite thereto. The guide portion 5A is opposed to a length (width in the left-right direction) in an extending direction of a pressing portion 20A of the driver 2A and extends in the driving direction of the staple needle 10 and in a direction opposite thereto.

[0042] Thus, the driver 2A guided by the guide portion 5A and moved in the driving direction of the staple needle 10 and in the opposite direction thereof is prevented from being tilted relative to the driving direction of the staple needle 10 and in the opposite direction thereof. Therefore, the pressing portion 20A of the driver 2A is prevented from being tilted axially relative to the needle crown 10a when the staple needle 10 is set in the driving position.

[0043] In the binding device 100A, one driver shaft 3A passes through a pair of action parts 40A of the driver mounting part 4A of the stapler 1A1 and a pair of action parts 40A of the driver mounting part 4A of the stapler 1A2. Thus, the two staplers 1A1 and 1A2 of the binding device 100A are connected by one driver shaft 3A driven by a single driving part 6. In addition, the bending part of the bending part 7, which is not shown in the figure, is driven by the driving part 6 via the transmission member 70.

[0044] <Operation Example of the Stapler of the Present Embodiment>

[0045] Figure 3 , Figure 4A , Figure 4B It is a front cross-sectional view showing an example of the operation of the stapler according to the present embodiment. Figure 1A The figure shows a state in which the driver 2A is located at the standby position, with the driver shaft 3A being parallel to the axial direction of the needle crown 10a of the stapler 10 being set at the driving position and not tilted. Figure 3 The figure shows a state where the driver 2A moves from the standby position to the driving direction of the stapler 10 while the driver shaft 3A is parallel to the axial direction of the needle crown 10a of the stapler 10 set at the driving position and is not inclined. Figure 4A The figure shows a state in which the driver 2A is located at the standby position, with the driver shaft 3A tilted relative to the axial direction of the needle crown 10a in a state in which the stapler 10 is set at the driving position. Figure 4B The figure shows a state where the driver 2A moves from the standby position to the driving direction of the stapler 10 while the driver shaft 3A is tilted relative to the axial direction of the needle crown 10a when the stapler 10 is set at the driving position.

[0046] In the stapler 1A, when the driver shaft 3A is driven by the driving unit 6 to move in the driving direction of the stapler 10 indicated by the arrow A1 , the action portion 40A of the driver mounting portion 4A is pressed in the driving direction of the stapler 10 by the driver shaft 3A.

[0047] The driver 2A is connected to the driver mounting portion 4A via the support shaft 41A. As a result, the driver 2A is pushed toward the driving direction of the stapler 10 via the support shaft 41A of the driver mounting portion 4A, and moves from the standby position to the driving position. Figure 1A , Figure 4A The standby position shown is Figure 3 , Figure 4B When the stapler 10 moves in the driving direction as shown, it is guided by the guide portion 5A.

[0048] Thus, the pressing portion 20A of the driver 2A is prevented from being tilted relative to the axial direction of the needle crown 10a of the staple needle 10 when the staple needle 10 is set at the driving position as indicated by the arrow B orthogonal to the driving direction of the staple needle 10. Furthermore, when the driver 2A moves from the standby position to the driving position, the pressing portion 20A presses the needle crown 10a of the staple needle 10, thereby driving the staple needle 10 out.

[0049] The driver 2A and the driver mounting portion 4A relatively rotate along the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position, with the support shaft 41A as a fulcrum. In addition, the pressing portion 20A of the driver 2A, which is guided by the guide portion 5A and moves in the driving direction of the staple needle 10, is suppressed from tilting relative to the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position.

[0050] like Figure 1A , Figure 3 As shown, when the driver shaft 3A is not tilted axially relative to the needle crown 10a when the binding needle 10 is set in the driving position, the direction in which the driver shaft 3A extends is parallel to the direction in which the pressing portion 20A of the driver 2A guided by the guide portion 5A extends.

[0051] like Figure 4A , Figure 4B As shown, when the driver shaft 3A is deformed and tilted relative to the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position, the driver 2A and the driver mounting portion 4A rotate relative to each other along the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position, with the support shaft 41A as a fulcrum. Thus, even when the driver shaft 3A is tilted relative to the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position, the pressing portion 20A of the driver 2A is suppressed from tilting relative to the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position.

[0052] Therefore, in any of the cases where the driver shaft 3A is not tilted axially relative to the needle crown 10a when the binding needle 10 is set in the driving position or is tilted axially, the axial tilt of the pressing portion 20A of the driver 2A relative to the needle crown 10a when the binding needle 10 is set in the driving position is suppressed.

[0053] The support shaft 41A is provided at the center of the interval between the pair of action parts 40A. The center of the needle crown 10a of the driver 2A along the axial direction when the stapler 10 is set at the driving position is supported by the support shaft 41A.

[0054] Thus, the force of the pair of action parts 40A of the driver mounting part 4A pressing in the driving direction of the stapler 10 by the driver shaft 3A is applied to the center of the driver 2A along the axial direction of the needle crown 10a when the stapler 10 is set in the driving position.

[0055] Therefore, in any of the cases where the axial direction of the needle crown 10a of the punching device shaft 3A is not tilted or tilted relative to the binding needle 10 when the needle crown 10a is set in the punching position, the force applied from the pressing portion 20A to one end side and the other end side of the needle crown 10a through the action of pressing the needle crown 10a of the binding needle 10 by the pressing portion 20A of the punching device 2A is approximately equal.

[0056] Therefore, when the driver 2A drives the stapler 10, force is applied to the first leg 10b and the second leg 10c substantially equally, thereby suppressing the occurrence of bending of the stapler 10 due to uneven force applied to the first leg 10b and the second leg 10c.

[0057] exist Figure 1A , Figure 1B In the binding device 100A shown, the stapler 1A1 and the stapler 1A2 are connected by one driver shaft 3A. Thus, a transmission mechanism 60 such as a gear and a connecting rod for transmitting a driving force from a driving unit 6 to one driver shaft 3A is sufficient. Therefore, compared with a structure in which a transmission mechanism 60 for transmitting a driving force from a driving unit 6 to each driver shaft 3A of each stapler is provided, the number of components can be reduced, and the cost can be reduced.

[0058] On the other hand, in the binding device 100A, the driver shafts of the pair of action parts 40A passing through the driver mounting part 4A of the stapler 1A1 and the driver shafts of the pair of action parts 40A passing through the driver mounting part 4A of the stapler 1A2 are connected between the stapler 1A1 and the stapler 1A2 to form a driver shaft 3A. Figure 2A Compared with the stapler 1A shown in the figure, the driver shaft 3A is longer by the amount of connection between the stapler 1A1 and the stapler 1A2. When the driver shaft 3A is longer, deformation such as bending is more likely to occur.

[0059] However, even when the driver shaft 3A is tilted relative to the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position, the pressing portion 20A of the driver 2A is suppressed from tilting relative to the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position. In addition, the force of the pair of action portions 40A of the driver mounting portion 4A, which is pressed in the driving direction of the staple needle 10 by the driver shaft 3A, is applied to the center of the driver 2A along the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position.

[0060] Therefore, even when the driver shaft 3A is deformed due to bending or the like and tilted relative to the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position, the driver 2A can be used to drive the staple needle 10 so that the first pin 10b and the second pin 10c are substantially equally applied with force. Thus, the driver shaft 3A is allowed to deform, and the buckling of the staple needle 10 caused by the uneven force applied to the first pin 10b and the second pin 10c is suppressed.

[0061] <Modification of the Stapler of the Present Embodiment>

[0062] Figure 5A is a perspective view showing a modified example of the stapler of the present embodiment, Figure 5B It is a perspective view showing a driver of a modified example of the stapler according to the present embodiment.

[0063] The stapler 1B of the modified example comprises: a driver 2B for driving out the staple needle 10; and a driver shaft 3B for moving the driver 2B in the driving direction of the staple needle 10 and in the opposite direction, and supporting the driver 2B in a manner capable of rotating axially along the needle crown 10a when the staple needle 10 is set in the driving position.

[0064] The driver 2B is supported to be movable in the driving direction of the stapler 10 and the opposite direction thereof as indicated by the arrow A1. The driver 2B is in the shape of a rectangular plate, and the driving direction of the stapler 10 and the opposite direction thereof are the long side directions. The driver 2B has a pressing portion 20B for pressing the needle crown 10a of the stapler 10 at the end along the driving direction of the stapler 10. The driver 2B has an action portion 22B at the end along the opposite direction of the driving direction of the stapler 10, and the action portion 22B is supported by the driver shaft 3B and bears the force of moving in the driving direction of the stapler 10 and the force of moving in the opposite direction thereof. The action portion 22B is composed of a hole into which the driver shaft 3B enters, and a gap is formed between the driver shaft 3B and the action portion 22B so that the driver shaft 3B can rotate relative to the driver 2B along the axial direction of the needle crown 10a of the stapler 10 when the stapler 10 is set in the driving position. The action portion 22B is provided in the driver 2B along the extending direction of the pressing portion 20B, that is, at the center in the axial direction of the needle crown 10 a when the stapler 10 is set at the driving position.

[0065] The driver shaft 3B is an example of a support portion, and extends in the axial direction of the needle crown 10a when the stapler 10 is set at the driving position as indicated by the arrow B. The driver shaft 3B is driven by a driving portion (not shown) composed of a motor, gears, etc., and moves in the driving direction of the stapler 10 and in the opposite direction.

[0066] Thus, the center of the axial direction of the needle crown 10a of the driver 2B along the extension direction of the pressing portion 20B, i.e., when the stapler 10 is set at the driving position, is supported by the driver shaft 3B via the action portion 22B. Furthermore, the driver 2B and the driver shaft 3B relatively rotate along the axial direction of the needle crown 10a when the stapler 10 is set at the driving position, with the action portion 22B as a fulcrum.

[0067] The stapler 1B includes a guide portion (not shown) that guides the driver 2B that moves in the driving direction of the staple needle 10 and the opposite direction thereof in the driving direction of the staple needle 10 and the opposite direction thereof.

[0068] In the stapler 1B, the driver 2B and the driver shaft 3B relatively rotate along the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position, with the action portion 22B as a fulcrum. As a result, the pressing portion 20B of the driver 2B, which is guided by a guide portion (not shown) and moves in the driving direction of the staple needle 10, is suppressed from tilting relative to the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position.

[0069] The force of the driver shaft 3B pressing the action portion 22B of the driver 2B in the driving direction of the stapler 10 is applied to the center of the driver 2B along the axial direction of the needle crown 10a when the stapler 10 is set at the driving position.

[0070] Therefore, in any of the cases where the axial direction of the needle crown 10a is not tilted or tilted when the driver shaft 3B is set in the driving position relative to the binding needle 10, the force applied from the pressing portion 20B to one end side and the other end side of the needle crown 10a is approximately equal due to the action of the pressing portion 20B of the driver 2B pressing the needle crown 10a of the binding needle 10.

[0071] Therefore, the first pin 10b and the second pin 10c are substantially equally forced by the driver 2B to drive the staple 10. Thus, the stapler 1B does not include a driver mounting portion as a support portion, and the buckling of the staple 10 caused by the unequal force applied to the first pin 10b and the second pin 10c is also suppressed.

[0072] Fig. 6A 2 is a perspective view showing another modified example of the stapler of the present embodiment. Figure 6B It is a perspective view showing a driver of another modified example of the stapler according to the present embodiment.

[0073] A stapler 1C of another modified example comprises: a driver 2C for driving out the staple needle 10; and a driver shaft 3C for moving the driver 2C in the driving direction of the staple needle 10 and in the opposite direction, and supporting the driver 2C so as to be rotatable along the axial direction of the needle crown 10a when the staple needle 10 is set in the driving position.

[0074] The punching device 2C is supported so as to be movable in the driving direction of the binding needle 10 and the opposite direction thereof as indicated by the arrow A1. The punching device 2C is in the shape of a rectangular plate, and the driving direction of the binding needle 10 and the opposite direction thereof are the long side directions. The punching device 2C has a pressing portion 20C for pressing the needle crown 10a of the binding needle 10 at the end portion along the driving direction of the binding needle 10. The punching device 2C has an action portion 22C at the end portion along the opposite direction of the driving direction of the binding needle 10, and the action portion 22C is supported by the punching device shaft 3C and bears the force of moving in the driving direction of the binding needle 10 and the force of moving in the opposite direction thereof. A protrusion is provided on the punching device 2C to constitute the action portion 22C. The action portion 22C is provided at the punching device 2C at the axial center of the needle crown 10a when the binding needle 10 is set in the driving position.

[0075] The driver shaft 3C is an example of a support portion and extends along the axial direction of the needle crown 10a when the stapler 10 is set at the driving position. The driver shaft 3C is driven by a not-shown driving portion composed of a motor, gears, etc. to move in the driving direction of the stapler 10 and in the opposite direction.

[0076] The driver shaft 3C is plate-shaped and has an acted portion 32C into which the acting portion 22C of the driver 2C enters. The acted portion 32C is composed of a hole with a gap formed between the acting portion 22C so that the driver shaft 3C can rotate relative to the driver 2C along the axial direction of the needle crown 10a when the stapler 10 is set at the driving position.

[0077] Thus, the center of the needle crown 10a of the driver 2C along the axial direction when the stapler 10 is set at the driving position is supported by the acted portion 32C of the driver shaft 3C via the acting portion 22C. The driver 2C and the driver shaft 3C relatively rotate along the axial direction of the needle crown 10a when the stapler 10 is set at the driving position with the acting portion 22C as a fulcrum.

[0078] The stapler 1C includes a guide portion (not shown) that guides the driver 2C that moves in the driving direction of the staple needle 10 and in the opposite direction thereof, along the driving direction of the staple needle 10 and in the opposite direction thereof.

[0079] In the stapler 1C, the driver 2C and the driver shaft 3C rotate relatively along the axial direction of the needle crown 10a when the stapler 10 is set at the driving position, with the action portion 22C as a fulcrum. As a result, the pressing portion 20C of the driver 2C, which is guided by a guide portion (not shown) and moves in the driving direction of the stapler 10, is suppressed from tilting relative to the axial direction of the needle crown 10a when the stapler 10 is set at the driving position.

[0080] The force of the acting portion 22C of the driver 2C being pressed in the driving direction of the stapler 10 by the acting portion 32C of the driver shaft 3C is applied to the center of the needle crown 10a of the driver 2C along the axial direction when the stapler 10 is set at the driving position.

[0081] Therefore, in any of the cases where the axial direction of the needle crown 10a of the punching device shaft 3C is not tilted or tilted relative to the binding needle 10 when the needle crown 10a is set in the driving position, the force applied from the pressing portion 20C to one end side and the other end side of the needle crown 10a through the action of the pressing portion 20C of the punching device 2C pushing the needle crown 10a of the binding needle 10 is approximately equal.

[0082] Therefore, the first pin 10b and the second pin 10c are substantially equally forced by the action of the driver 2C to drive the stapler 10. Thus, when the stapler 1C does not have a driver mounting portion as a support portion, the buckling of the stapler 10 caused by the unequal force applied to the first pin 10b and the second pin 10c is also suppressed.

[0083] Fig. 7A 2 is a perspective view showing another modified example of the stapler of the present embodiment. Figure 7B It is a perspective view showing a driver of another modified example of the stapler according to the present embodiment.

[0084] The stapler 1D of another modified example comprises: a driver 2D for driving out the staple needle 10; and a driver shaft 3D, which moves the driver 2D in the driving direction of the staple needle 10 and in the opposite direction, and supports the driver 2D so that it can rotate axially along the needle crown 10a when the staple needle 10 is set in the driving position.

[0085] The punching device 2D is supported to be movable in the driving direction of the binding needle 10 and the opposite direction thereof. The punching device 2D is in the shape of a rectangular plate, and the driving direction of the binding needle 10 and the opposite direction thereof are the long side directions. The punching device 2D has a pressing portion 20D for pressing the needle crown 10a of the binding needle 10 at the end portion along the driving direction of the binding needle 10. The punching device 2D has an action portion 22D at the end portion along the opposite direction of the driving direction of the binding needle 10, and the action portion 22D is supported by the punching device shaft 3D and bears the force of moving in the driving direction of the binding needle 10 and the force of moving in the opposite direction thereof. The action portion 22D is constituted by a hole that passes through the front and back of the punching device 2D. The action portion 22D is set in the punching device 2D at a position including the center of the axial direction of the needle crown 10a when the binding needle 10 is set in the driving position.

[0086] The driver shaft 3D is an example of a support portion and extends along the axial direction of the needle crown 10a when the stapler 10 is set at the driving position. The driver shaft 3D is driven by a not-shown driving portion composed of a motor, gears, etc., and moves in the driving direction of the stapler 10 and in the opposite direction.

[0087] The driver shaft 3D is plate-shaped and has an acted portion 32D that enters the acting portion 22D of the driver 2D. The acted portion 32D is composed of a cylindrical protrusion that forms a gap with the acting portion 22D so that the driver shaft 3D can rotate along the axial direction of the needle crown 10a when the stapler 10 is set at the driving position relative to the driver 2D.

[0088] Thus, the center of the driver 2D along the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position is supported by the acted portion 32D of the driver shaft 3D via the acted portion 22D. Moreover, the driver 2D and the driver shaft 3D relatively rotate along the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position with the acted portion 32D as a fulcrum.

[0089] The stapler 1D includes a guide portion (not shown) that guides the driver 2D that moves in the driving direction of the staple needle 10 and the opposite direction along the driving direction of the staple needle 10 and the opposite direction.

[0090] In the stapler 1D, the driver 2D and the driver shaft 3D relatively rotate along the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position, with the acted portion 32D as a fulcrum. As a result, the pressing portion 20D of the driver 2D, which is guided by a guide portion (not shown) and moves in the driving direction of the staple needle 10, is suppressed from tilting relative to the axial direction of the needle crown 10a when the staple needle 10 is set at the driving position.

[0091] The force of the acting portion 22D of the driver 2D pressing in the driving direction of the stapler 10 by the acting portion 32D of the driver shaft 3D is applied to the center of the needle crown 10a of the driver 2D along the axial direction when the stapler 10 is set at the driving position.

[0092] Therefore, in any of the cases where the axial direction of the needle crown 10a is not tilted or tilted relative to the binding needle 10 when the driver shaft 3D is set in the driving position, the force applied from the pressing portion 20D to one end side and the other end side of the needle crown 10a is substantially equal due to the action of the pressing portion 20D of the driver 2D pressing the needle crown 10a of the binding needle 10.

[0093] Therefore, in the action of driving the stapler 10 by the driver 2D, the force is applied to the first pin 10b and the second pin 10c approximately equally. Thus, in the case where the stapler 1D does not have a driver mounting portion as a support portion, the buckling of the stapler 10 caused by the unequal force applied to the first pin 10b and the second pin 10c is suppressed.

[0094] Description of Reference Numerals

[0095] 1A, 1A1, 1A2, 1B, 1C, 1D···stapler, 2A, 2B, 2C, 2D···puncher, 20A, 20B, 20C, 20D···pressing portion, 22B, 22C, 22D···acting portion, 3A, 3B, 3C, 3D···puncher shaft (supporting portion), 32C, 32D···acted portion, 4A···puncher mounting portion (supporting portion), 40A···acting portion, 41A···supporting shaft, 5A···guide portion, 10···binding needle, 10a···needle crown, 100A···binding device.

Claims

1. A stapler, comprising: A puncher that drives a binding pin consisting of a crown and a pair of legs into the paper; a bending portion for bending the leg portion that has penetrated the paper and passed through the paper; and The support portion supports the driver in a manner that allows the driver to move along the driving direction of the binding needle, wherein: The support portion supports the driver so as to be rotatable along the axial direction of the crown portion in a state where the staple needle is set at the driving position.

2. The stapler according to claim 1, wherein: A guide portion is provided for guiding the punching tool in the punching direction when the punching tool punches the staple into the paper.

3. The stapler according to claim 1 or 2, wherein: The support portion rotatably supports the center position of the driver in the axial direction.

4. The stapler according to claim 3, wherein: The support portion has: a driver mounting portion for rotatably supporting the driver; and The driver shaft extends along the axial direction, so that the driver mounting portion moves along the driving direction.

5. The stapler according to claim 3, wherein: The support portion includes a driver shaft extending in the axial direction, rotatably supporting the driver at a portion in the axial direction, and moving the driver in the driving direction.

6. The stapler according to claim 4, wherein: The driver mounting portion includes a support portion that rotatably supports the driver. The driver and the driver shaft rotate relatively about the support portion so that the driver faces the driving direction.

7. The stapler according to claim 6, wherein: The support portion is a support shaft, The axial direction of the support shaft is orthogonal to the driver axis.

8. The stapler according to any one of claims 4 to 7, wherein: The driver mounting portion includes an acting portion that contacts the driver shaft and receives a force of the driver shaft that moves the driver mounting portion in the driving direction and a force that moves the driver mounting portion in a direction opposite to the driving direction.

9. The stapler according to any one of claims 1 to 8, wherein: The stapler further includes a driving unit that drives the driver.

10. A binding device comprising a plurality of the staplers according to any one of claims 1 to 9, each of the staplers further comprising a driver mounting portion for rotatably supporting the driver of the stapler, The binding device comprises: a driver shaft passing through the driver mounting portions of the plurality of staplers; and A single driving unit drives the plurality of staplers.

Images