JP6332411B2 - Stapler - Google Patents

Description

  The present invention relates to a stapler that binds an object to be bound with staples made of a non-metallic material such as paper.

  2. Description of the Related Art Conventionally, a stapler has been proposed that can bind a binding object of a sheet using a staple made of a non-metallic material such as paper instead of a metal staple.

  In a stapler using a staple made of a non-metallic material such as a soft material, the stapler includes an insertion blade portion that forms a hole portion in the binding object, and the hole portion is formed in the binding object by the insertion blade portion. It is the structure which makes the leg part of a staple penetrate.

  In a conventional stapler that uses a staple made of a soft material and made of a non-metallic material, a member that constitutes a mounting table on which a binding object is placed is provided with a bending member that bends a leg portion of the staple. Then, the movement of the operation member that penetrates the binding object through the insertion blade portion and the leg portion of the staple moves the mounting table at a predetermined timing, and relatively moves the bending member by the operation of the mounting table, thereby moving the binding object. The leg portion of the penetrated staple is bent (for example, see Patent Document 1).

Japanese Patent No. 4967521

In the conventional stapler, as the operation member is operated, the load applied to the operation member is increased by the operation of passing the insertion blade portion and the staple leg portion through the binding target object and bending the staple leg portion passing through the binding target object. To do.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a stapler that prevents an increase in an operation load applied to an operation member and changes a decrease rate of the operation load .

In order to solve the above-described problem, the present invention has a pair of punching blades facing each other at a distance corresponding to the length of the crown portion of a staple made of a non-metallic material and made of a soft material. A hole is formed in the object to be bound by the insertion / extraction operation, a penetrating means for penetrating the pair of leg portions of the staple through the object to be bound, and a pair of leg portions of the staple penetrating the binding object by the penetrating means are bent. means bending, is passed through the pair of legs of the staple to the binding object by penetration means, and an operation member for bending by means bending the pair of legs of the staple passing through in the binding object, the operating member is a stapler includes a cam groove that is guided shaft provided in the main body, the cam groove is set to the operation load becomes lighter shape of the operation member with the operation of the operating member, the shape of the cam groove, the operation unit The length to the fulcrum shaft of the rotary operation portion and the operation member for receiving a force, and a length of up sites and the fulcrum shaft acting force, is changed by moving the fulcrum shaft due to the operation of the operating member a stapler for changing the load weight applied to the operation member.

  In the stapler of the present invention, the movement of the operation member is directly transmitted to the bending member, the bending member is operated, and the pair of leg portions of the staple penetrating the binding object is bent, and the binding operation is performed.

According to the stapler of the present invention, it is possible to have a change in the operation load heavy, preventing an increase in operation load, and it is possible to recognize that the paper is stapled in the change of the operation load, usability improves.

It is a sectional side view which shows an example of the internal structure of the stapler of this Embodiment. It is a sectional side view which shows an example of the internal structure of the stapler of this Embodiment. It is a side view which shows an example of the stapler of this Embodiment. It is the perspective view seen from the front which shows an example of the stapler of this Embodiment. It is the perspective view seen from the back which shows an example of the stapler of this Embodiment. It is front sectional drawing which shows an example of the internal structure in the site | part of the penetration mechanism of the stapler of this Embodiment. It is front sectional drawing which shows an example of the internal structure in the site | part of the cutting / molding mechanism of the stapler of this Embodiment. It is a top view which shows an example of a connection staple. It is a perspective view which shows an example of the accommodation form of a connection staple. It is a perspective view which shows an example of the shape | molded staple. It is sectional drawing which shows an example of the state which bound the binding paper with the staple. It is a perspective view which shows an example of a staple cartridge. It is a perspective view which shows an example of a staple cartridge. It is a perspective view which shows an example of the internal structure in the site | part of the penetration mechanism of the stapler of this Embodiment. It is a front view which shows an example of a penetration mechanism. It is a rear view which shows an example of a penetration mechanism. It is a perspective view which shows an example of a penetration mechanism. It is a perspective view which shows an example of a punching blade guide. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism. It is operation | movement explanatory drawing which shows the operation example of the penetration mechanism by the difference in the number of sheets of binding paper. It is operation | movement explanatory drawing which shows the operation example of the penetration mechanism by the difference in the number of sheets of binding paper. It is a front view which shows an example of a cutting | disconnection and shaping | molding mechanism. It is a rear view which shows an example of a cutting | disconnection and shaping | molding mechanism. It is the perspective view which looked at the cutting and shaping mechanism from the front. It is the perspective view which looked at the cutting and shaping mechanism from the back. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation | movement which cut | disconnects a connection staple. It is a side view which shows an example of a bending mechanism. It is a perspective view which shows an example of a bending mechanism. It is a side view which shows an example of the driving force transmission mechanism of a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a bending mechanism. It is a sectional side view of a stapler showing an example of a desorption mechanism. FIG. 10 is an operation explanatory diagram illustrating an example of a linked staple transport operation by the operation of the detaching mechanism. It is operation | movement explanatory drawing which shows the operation example of an operation handle part. It is operation | movement explanatory drawing which shows the operation example of an operation handle part. It is operation | movement explanatory drawing which shows the operation example of an operation handle part. It is operation | movement explanatory drawing which shows the operation example of an operation handle part. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of the whole stapler. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a penetration mechanism and a bending mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is operation | movement explanatory drawing which shows the operation example of a cutting | disconnection and shaping | molding mechanism. It is a perspective view which shows the other structural example of the stapler of this Embodiment. It is a perspective view which shows the other structural example of the stapler of this Embodiment.

  Hereinafter, embodiments of a stapler of the present invention will be described with reference to the drawings.

<Configuration example of stapler according to this embodiment>
1 and 2 are side sectional views showing an example of the internal configuration of the stapler according to the present embodiment. FIG. 1 shows a state in which the staple cartridge is mounted, and FIG. 2 shows a state in which the staple cartridge is removed. Indicates. FIG. 3 is a side view showing an example of the stapler of the present embodiment.

  FIG. 4 is a perspective view seen from the front showing an example of the stapler of the present embodiment, and FIG. 5 is a perspective view seen from the rear showing an example of the stapler of the present embodiment. Further, FIG. 6 is a front sectional view showing an example of the internal configuration in the portion of the stapler penetrating mechanism of the present embodiment, and FIG. 7 is an example of the internal configuration of the portion of the stapler cutting / molding mechanism in the present embodiment. FIG.

  First, the outline of the stapler 1 according to the present embodiment will be described with reference to the drawings. The stapler 1 uses a staple 10 which is a soft material and a non-metallic material, and uses the staple 10 which is a binding object to be bound. Bind. As will be described later, the staples 10 are supplied as connected staples 10a integrally formed in a band-like form, and the connected staples 10a are stored in the staple cartridge 11 and attached to the stapler 1.

  The stapler 1 includes a penetrating mechanism 2 that opens a hole in the binding paper P and pushes the staple 10 through the binding paper P by an operation of pushing out the staple 10 positioned at the head which is cut from the connected staple 10a and formed.

  In addition, the stapler 1 cuts the next staple 10 from the connected staple 10a in conjunction with the operation of the penetration mechanism 2 that pushes the staple 10 positioned at the head and penetrates the staple paper P, and then cuts the next staple that has been cut. A cutting / forming mechanism 3 for forming the staple 10 is provided.

  The stapler 1 further includes a paper pressing mechanism 4 that presses the binding paper P that penetrates the staple 10 by the penetration mechanism 2 in conjunction with the operation of the penetration mechanism 2 that pushes the staple 10 positioned at the head and penetrates the staple paper P. Prepare.

  Further, the stapler 1 includes a folding mechanism 5 that bends the staple 10 that has penetrated the binding paper P in conjunction with the operation of the penetration mechanism 2 that pushes the staple 10 located at the head and penetrates the staple paper P.

  Further, the stapler 1 conveys the next staple 10 cut and formed from the linked staple 10a to the penetration mechanism 2 from which the staple 10 located at the head is pushed out, and the next staple 10 is passed through the penetration mechanism 2. The cutting / molding mechanism 3 that has been transported to the front is provided with a transport mechanism 6 that transports the linked staples 10a.

  Further, the stapler 1 includes a detaching mechanism 7A that, when the staple cartridge 11 is mounted, transports the linked staples 10a stored in the staple cartridge 11 to a predetermined position in conjunction with the transport mechanism 6.

  The stapler 1 includes a main body 8 on which the above-described penetration mechanism 2, cutting / molding mechanism 3, and sheet pressing mechanism 4, a bending mechanism 5, a transport mechanism 6, and a detaching mechanism 7A are provided. In the stapler 1, the above-described constituent elements are operated with a predetermined driving force. In this example, the constituent elements are operated in conjunction with the operation of the operation handle portion 9 that is operated by human power.

  The main body portion 8 includes a paper placement table 80 on which the binding paper P is placed, and a cartridge storage portion 81 in which the staple cartridge 11 is mounted. The stapler 1 is provided with a sheet mounting table 80 on the front side which is one side of the main body 8 and a cartridge storage unit 81 on the rear side.

  The main body 8 is provided with a penetrating mechanism 2, a cutting / molding mechanism 3, and a sheet pressing mechanism 4 on the upper side of the sheet placing table 80. The penetration mechanism 2, the cutting / molding mechanism 3, and the sheet pressing mechanism 4 are arranged in this order from the rear in the cutting / molding mechanism 3, the penetration mechanism 2, and the sheet pressing mechanism 4 with respect to the conveying direction of the connected staple 10a.

  The main body 8 includes a guide groove 82 a that guides the movement of the penetrating mechanism 2, a guide groove 82 b that guides the movement of the cutting / molding mechanism 3, and a guide groove 82 c that guides the movement of the paper pressing mechanism 4. The guide grooves 82a to 82c respectively extend in the vertical direction with respect to the binding paper P placed on the paper placement table 80, and are provided in parallel to each other.

  The main body 8 is provided with a transport mechanism 6 behind the penetrating mechanism 2, the cutting / molding mechanism 3, and the sheet pressing mechanism 4. The main body 8 is provided with a guide (not shown) that guides the movement of the transport mechanism 6. Further, the main body 8 is provided with a bending mechanism 5 on the lower side of the paper placing table 80.

  The operation handle portion 9 is supported by a shaft 90 provided in the main body portion 8 so that the cam groove 91 is guided, and is rotatably supported by a connecting shaft portion 20b (described later) of the penetration mechanism 2. The operation handle portion 9 is provided so as to be movable in the vertical direction by rotating about a virtual fulcrum regulated by the locus of the cam groove 91 guided by the shaft 90 and the locus of the connecting shaft portion 20b. Rotation operation with fulcrum shaft as the fulcrum shaft is transmitted to the penetration mechanism 2. In addition, the operation handle portion 9 includes a link 92 that transmits a rotation operation around the virtual fulcrum to the transport mechanism 6 via a connecting shaft portion 20b described later.

  The operation handle portion 9 is configured such that the distance from the force point to which force is applied to the virtual fulcrum and the distance from the action point to apply force to the penetration mechanism 2 to the virtual fulcrum are displaced according to the shape of the cam groove 91. The load applied to the portion 9 changes.

  The cam groove 91 includes a first guide groove portion 91a that is guided to the shaft 90 at a timing when the staple 10 starts to penetrate the binding paper P by the operation of the penetration mechanism 2, and the staple 10 is bound by the operation of the penetration mechanism 2. The second guide groove portion 91b guided by the shaft 90 at the timing of passing through the shaft 90 and the third guide groove portion 91c guided by the shaft 90 at the timing of bending the staple 10 by the operation of the bending mechanism 5 are provided.

  In this example, the operation is performed at the timing when the staple 10 starts to penetrate the binding paper P by the operation of the penetration mechanism 2 as an example of the penetration means and at the timing of folding the staple 10 by the operation of the folding mechanism 5 as an example of the folding means. The shape of the cam groove 91 is set so that the operation load of the operation handle portion 9 as an example of the member becomes light.

  In the stapler 1, the operation of the operation handle portion 9 is transmitted to the penetrating mechanism 2, the cutting / molding mechanism 3 and the sheet pressing mechanism 4, and the penetrating mechanism 2, the cutting / molding mechanism 3 and the sheet pressing mechanism 4 are guided by the guide grooves 82a to 82a. It is guided by 82c and moves up and down with respect to the binding paper P placed on the paper placement table 80.

  Thereby, the stapler 1 performs an operation of pressing the binding paper P placed on the paper placement table 80 by the paper pressing mechanism 4 by the operation of the operation handle portion 9. Further, in conjunction with the operation of pressing the binding paper P by the paper pressing mechanism 4, the operation of penetrating the binding paper P by the penetrating mechanism 2 through the staple 10 positioned at the head which is cut from the connected staple 10 a and formed is performed. Is called. Further, in conjunction with the operation of causing the staple 10 to penetrate the binding paper P by the penetration mechanism 2, the cutting / molding mechanism 3 performs the operation of cutting and molding the next staple 10 from the connected staple 10a.

  Further, in the stapler 1, the bending mechanism 5 is operated in conjunction with the operation of the operation handle portion 9, and the operation of bending the staple 10 penetrating the binding paper P is performed.

  Further, in the stapler 1, the operation of the operation handle portion 9 is transmitted to the transport mechanism 6 via the link 92, and the transport mechanism 6 moves in the front-rear direction along the transport direction of the connected staple 10a. As a result, the stapler 1 transports the connected staple 10a to the cutting / molding mechanism 3 by the transport mechanism 6 by the operation of the operation handle portion 9, and also removes the staple 10 positioned at the head cut and molded from the connected staple 10a. The operation of conveying to the penetration mechanism 2 is performed.

<Configuration example of staple and connected staple>
FIG. 8 is a plan view showing an example of the linked staple of the present embodiment, and FIG. 9 is a perspective view showing an example of the connected staple storage mode of the present embodiment. FIG. 10 is a perspective view showing an example of the staple formed in the present embodiment, and FIG. 11 is a cross-sectional view showing an example of a binding sheet bound with the staple of the present embodiment. Next, the configuration of the staple 10 and the linked staple 10a of the present embodiment will be described with reference to the drawings.

  The staple 10 is made of a soft material having a predetermined thickness and is made of a non-metallic material. The staple 10 before molding is elongated and substantially straight, and the distal end portions 10b on both sides in the longitudinal direction become narrower toward the distal end. Have. In the present embodiment, the staple 10 is made of paper, but may be made of a resin film or sheet instead of paper.

  The connected staple 10a is a form in which a plurality of staples 10 are arranged in parallel with the longitudinal direction, and the vicinity of both end portions in the longitudinal direction of each staple 10 is formed by a pair of connecting portions 10c provided inside the leading end portion 10b. Connected to each other. In the connected staple 10a, the portion outside the connecting portion 10c along the longitudinal direction of each staple 10 is configured such that the portion where the juxtaposed staples 10 are connected is not provided due to the tapered shape of the distal end portion 10b. .

  The connected staples 10a are each provided with a hole 10d adjacent to each connecting part 10c inside a pair of connecting parts 10c that connect the staples 10 arranged in parallel. The hole 10d is configured by providing a substantially rectangular opening with rounded corners in this example having a predetermined length in the longitudinal direction and the short direction of the staple 10. The hole 10d may be configured as a round hole shape or an elliptical opening. And in the connection staple 10a, it is the structure which does not provide the site | part by which the staple 10 arranged in parallel is cut | disconnected between the connection part 10c and the hole 10d.

  Furthermore, the connected staple 10a is provided with a slit portion 10e between the respective hole portions 10d in which the staples 10 arranged side by side are separated from each other. The slit portion 10e is formed continuously from one hole portion 10d to the other hole portion 10d, and in the connected staple 10a, a portion where the juxtaposed staples 10 are connected between the hole portion 10d and the slit portion 10e. It is the structure which does not provide.

  The connected staple 10a has a predetermined shape having the above-described distal end portion 10b, connecting portion 10c, hole portion 10d, slit portion 10e, and the like, and is punched and molded by pressing, punching, or the like.

  The connected staple 10a is provided with an adhesive portion 10f on the back surface, which is one surface of one end portion 10b that is an end portion in the longitudinal direction of each staple 10. The bonding portion 10f is of a property that provides a predetermined adhesive force when the legs 10i of the staple 10 are bonded together in accordance with the material of the staple 10.

  As shown in FIG. 9, the staples 10 overlap each other when the connected staples 10 a are wound in a roll shape, and in the staple 10 on the outer peripheral side, an adhesive portion 10 f located on the back surface of one tip portion 10 b. Is in contact with the surface side of one end portion 10b of the staple 10 on the inner peripheral side.

  Therefore, in the connected staple 10a, a cover portion 10g made of silicon or the like is provided on the surface which is the other surface of one end portion of the region in contact with the adhesive portion 10f when it is wound in a roll shape. This prevents sticking of the staples 10 in a form in which the staples 10a are wound.

  The staple 10 is cut from the connected staple 10a by the cutting / molding mechanism 3 shown in FIGS. 1 and 7, and the like, and as shown in FIG. 10, both ends in the longitudinal direction have a predetermined length. The crown portion 10h is formed so as to be substantially parallel to the direction 1, and leg portions 10i are formed at both ends of the crown portion 10h.

  The staple 10 formed by being cut from the connected staples 10 a has the pair of leg portions 10 i penetrate the binding paper P by the penetration mechanism 2, and the pair of leg portions 10 i that penetrate the binding paper P is bound by the folding mechanism 5. Bent along P in the second direction.

  The staple 10 is provided with an adhesive portion 10f on the back surface of one tip portion 10b, so that the crown portion 10h and the leg portion 10i are molded, and the adhesive portion 10f is provided on the back surface of the one leg portion 10i. become. In this example, the staple 10 has a folding position inside the hole 10d, and when the length of the leg 10i is ½ or more of the length of the crown 10h, the pair of legs 10i are bonded. The portion 10f is configured to overlap the leg portion 10i.

  As a result, as shown in FIG. 11, after the other leg 10i is bent in the second direction along the binding paper P, the one leg 10i is bent in the second direction along the binding paper P. Then, the leg portions 10i and the other leg portion 10i are overlapped, so that the leg portions 10i are bonded to each other by the adhesive portion 10f.

<Configuration example of staple cartridge>
12 and 13 are perspective views showing examples of the staple cartridge. Next, the configuration of the staple cartridge 11 will be described with reference to the drawings. Here, FIG. 12 shows a state in which the staple cartridge 11 is closed, and FIG. 13 shows a state in which the staple cartridge 11 is opened.

  The staple cartridge 11 includes a cartridge main body 12 and a cartridge cover 13 that opens and closes the cartridge main body 12. In the staple cartridge 11, the cartridge body 12 is opened and closed by the rotation of the cartridge cover 13 with a shaft 13a provided on the rear end side as a fulcrum.

  The cartridge body 12 includes a staple storage unit 12a that stores the linked staples 10a wound in a roll shape, and a staple conveyance path 14 that protrudes forward from the staple storage unit 12a and that conveys the connected staples 10a.

  The staple conveyance path 14 has a flat bottom portion along the surface of the connected staple 10a drawn from the staple storage portion 12a, extends in a straight line, and a pair of guides that suppress the upward lifting of the connected staple 10a. The convex part 14a is provided in the vicinity of the front end side. In addition, the staple transport path 14 includes a groove portion 14 b that projects a feed claw, which will be described later, of the transport mechanism 6 into the staple transport path 14.

  The staple 10 is located at the head of the connected staple 10a conveyed through the staple conveyance path 14, and includes a cradle 16 that supports a portion corresponding to the crown portion 10h. The cradle 16 is formed continuously from the staple conveyance path 14 and has a width corresponding to the inner width of the crown portion 10 h of the staple 10 to match the length in the short direction of one staple 10. 14 protrudes forward from the tip of 14, and supports the staple 10 that is cut and molded by the cutting / molding mechanism 3.

  The cartridge cover 13 is configured to cover the staple storage portion 12 a and the staple conveyance path 14 of the cartridge main body 12.

  As a result, the cartridge cover 13 is opened, and the connected staple 10 a wound in a roll shape is stored in the staple storage portion 12 a of the cartridge main body 12, and the leading end of the connected staple 10 a is aligned with the leading end of the staple conveyance path 14. Thus, the leading end position of the linked staple 10a is determined.

  Then, by closing the cartridge cover 13, the leading end position is determined in a state where the linked staples 10 a can be conveyed and stored in the staple cartridge 11.

  When the cartridge main body 12 is closed, the cartridge cover 13 is provided with a staple presser 17 at a position facing the receiving base 16. In this example, the staple presser 17 is made of a spring material made of a thin plate-like metal, presses the staple 10 positioned at the head conveyed to the cradle 16 toward the cradle 16, and moves the staple 10 by the cutting / molding mechanism 3. The displacement of the staple 10 is suppressed during cutting and molding. The staple cartridge 11 includes a lock portion 13 c that locks the cartridge cover 13 so that the cartridge cover 13 can be opened and closed, and a cartridge body 12 includes a claw portion 12 b that engages with the lock portion 13 c.

  As shown in FIG. 1, when the staple cartridge 11 is mounted in the cartridge storage portion 81 of the stapler 1, the staple conveyance path 14 functions as a conveyance path for the stapler 1. The cradle 16 protrudes into the cutting / molding mechanism 3 and functions as a cradle for the staple 10 to be cut and molded by the cutting / molding mechanism 3.

<Configuration example of penetration mechanism>
FIG. 14 is a perspective view illustrating an example of an internal configuration of a portion of the stapler penetrating mechanism according to the present embodiment, FIG. 15 is a front view illustrating an example of the penetrating mechanism, and FIG. 16 is a rear view illustrating an example of the penetrating mechanism. FIG. 17 is a perspective view illustrating an example of the penetration mechanism. Next, the configuration of the penetration mechanism 2 will be described with reference to the drawings.

  The penetrating mechanism 2 is an example of a penetrating means. The penetrating mechanism main body 20 to which the operation of the operation handle portion 9 is transmitted, and the binding paper P is perforated by the operation of the penetrating mechanism main body 20 and the staple paper 10 is stapled 10. Are provided with two punching blades 21 and a staple push-down portion 22 that presses the staple 10. The penetrating mechanism body 20 is operatively connected to the operation handle portion 9 to constitute an example of a connecting portion.

  The penetrating mechanism main body 20 transmits a guide convex portion 20 a for guiding the movement of the penetrating mechanism 2, a connecting shaft portion 20 b connected to the operation handle portion 9, and the operation of the operation handle portion 9 to the cutting / molding mechanism 3. A protruding pin 20c is provided. The penetration mechanism main body 20 includes a guide projection 20 d that guides the movement of the penetration mechanism 2 and the cutting / molding mechanism 3, and a guide projection 20 e that guides the movement of the penetration mechanism 2 and the sheet pressing mechanism 4.

  The guide protrusions 20 a protrude outward from both ends in the width direction of the penetration mechanism main body 20, are provided on both side surfaces in the width direction of the main body 8 of the stapler 1, and are opened along the movement direction of the penetration mechanism 2. 8 guide grooves 82a. The guide convex portion 20a has an oval shape in which two semicircles are connected by a straight line, and a change in posture of the penetrating mechanism 2 in the rotation direction is restricted.

  The connecting shaft portion 20 b is inserted into a hole portion 20 g provided in the penetration mechanism main body portion 20, protrudes from the both ends in the width direction of the penetration mechanism main body portion 20 to the outside of the guide convex portion 20 a, and engages with the operation handle portion 9.

  The penetrating mechanism main body 20 is provided with a convex portion protruding from the inner surface of the hole 20g at a position almost directly above the punching blade 21 in the vicinity of the center of the hole 20g along the axial direction. The transmission part 20h pressed by is formed.

  The transmission portion 20h is configured so that the connecting shaft portion 20b is in contact with the penetrating mechanism main body portion 20 even when the connecting shaft portion 20b is inclined, and the operation handle portion 9 pushes the connecting shaft portion 20b. Is configured to be put on the punching blade 21 from directly above the punching blade 21.

  Further, the penetration mechanism main body 20 expands the shape of the hole 20g on both sides of the transmitting portion 20h in the vertical direction with respect to the diameter of the connecting shaft portion 20b, and the shaft retracting portions 20i are provided on both sides of the transmitting portion 20h. It is formed.

  The shaft retracting portion 20i is configured by providing a space in which the connecting shaft portion 20b can move in the vertical direction on both the left and right sides of the transmission portion 20h in order to allow the connecting shaft portion 20b to tilt with respect to the penetration mechanism main body portion 20. The

  Further, the penetrating mechanism main body 20 is provided with a convex portion protruding from the inner surface of the hole 20g at a position facing the transmission portion 20h, so that a shaft pressing portion 20j is formed. The shaft pressing portion 20j is configured to have a protruding height near the center that is higher than the left and right sides in order to allow the connecting shaft portion 20b to tilt with respect to the penetration mechanism main body portion 20.

  The protruding pin 20c is provided in the penetrating mechanism main body portion 20 so as to protrude from the back surface facing the cutting / molding mechanism 3 so as to protrude and retract. In this example, the protruding pin 20c is integrally provided on the penetrating mechanism main body portion 20 made of a resin material via a support portion 20f.

  The protrusion pin 20c is supported in a cantilever shape by the support portion 20f, and is configured to be able to protrude and retract from a surface facing the cutting / molding mechanism 3 mainly by elastic deformation of the support portion 20f. Thereby, it can be set as the structure which the protrusion pin 20c protrudes so that it can protrude and retract, without providing another components, such as a spring.

  The guide convex portion 20 d is configured by providing a protrusion on the back surface of the penetrating mechanism main body portion 20 facing the cutting / molding mechanism 3. The guide convex portion 20 e is configured by providing a protrusion on the front surface of the penetrating mechanism main body portion 20 that faces the paper pressing mechanism 4.

  The penetrating mechanism 2 has two punching blades 21 attached to the lower side of the penetrating mechanism main body 20 with a predetermined interval. The two punching blades 21 extend downward from the penetrating mechanism main body portion 20 in directions that are parallel to each other, and a blade portion 21a is formed at the tip that is the lower end.

  Each of the punching blades 21 is such that the distance between the two punching blades 21 is narrow on the tip end side where the blade portion 21a is provided, and the outer surface of the pair of punching blades 21 is on the base end side that is the rear end side from the tip end side. A step portion having a shape whose outer width widens toward the surface is provided, and a step portion having a shape whose inner width increases from the distal end side to the proximal end side is provided on the inner surface of the pair of punching blades 21.

  That is, each punching blade 21 has a pair of legs that are the inner width of the crown portion 10h of the staple 10 in the range where the interval between the two punching blades 21 is a predetermined length from the tip side where the blade portion 21a is provided. The first through portion 21b is formed so as to be equal to or slightly narrower than the inner width of the portion 10i.

  Each punching blade 21 has an outer width of the crown portion 10h of the staple 10 on the penetrating mechanism main body 20 side where the interval between the two punching blades 21 is the base end side above the first penetrating portion 21b. The second penetrating portion 21c is formed so as to be equal to or slightly wider than the outer width of a pair of leg portions 10i.

  Each punching blade 21 is bent in a substantially crank shape at a predetermined intermediate position serving as a boundary between the first through portion 21b and the second through portion 21c, and the first through portion 21b and the second through portion 21 c extends substantially straight along the moving direction of the penetration mechanism 2.

  As a result, each punching blade 21 is provided with a step in which the inner width on the first penetrating portion 21b side becomes narrower inside a predetermined intermediate position that becomes the boundary between the first penetrating portion 21b and the second penetrating portion 21c. Thus, the staple support portion 21 d that supports the leg portion 10 i of the staple 10 is formed by the step provided on the inner side of each of the punching blades 21.

  Further, each punching blade 21 is provided with a step that increases the outer width on the second penetrating portion 21c side outside a predetermined intermediate position that becomes a boundary between the first penetrating portion 21b and the second penetrating portion 21c. The step provided on the outside of each punching blade 21 forms a hole expanding portion 21e that widens the hole penetrating the binding paper P in the outward direction by the operation of the punching blade 21 penetrating the binding paper P.

  The staple support portion 21d has a smooth inclination so that the shape of the inner surface of the punching blade 21 gradually narrows from the second penetrating portion 21c toward the first penetrating portion 21b. It is configured so that the change in the distance between the punching blades 21 at the staple support portion 21d does not increase the punching resistance by the action of the 21 pulling out from the binding paper P.

  Further, the hole expanding portion 21e has a smooth inclination so that the shape of the outer surface of the punching blade 21 gradually spreads from the first through portion 21b toward the second through portion 21c, and is mainly extracted. By the operation of the blade 21 penetrating the binding paper P, a change in the interval of the punching blade 21 in the hole expanding portion 21e is configured not to increase the penetration resistance.

  In the first penetrating portion 21b, the inner surface of the pair of punching blades 21 extends straight with respect to the insertion / extraction direction of the punching blades 21 on the tip side from the staple support portion 21d. On the surface, no step is formed on the tip side from the staple support portion 21d. Further, the first through portion 21b has a straight outer side of the pair of punching blades 21 on the tip side from the hole expanding portion 21e, and extends straight in the insertion / extraction direction of the punching blade 21. On the outer surface, no step is formed on the tip side from the hole expanding portion 21e.

  In the second penetrating portion 21 c, the inner surface of the pair of punching blades 21 extends straight with respect to the insertion / extraction direction of the punching blade 21 on the proximal side from the staple support portion 21 d, and the inner side of the punching blade 21 On the other side, no step is formed on the proximal end side from the staple support portion 21d. Further, in the second penetrating portion 21 c, the outer surfaces of the pair of punching blades 21 extend straight with respect to the insertion / extraction direction of the punching blade 21 on the proximal side from the hole expanding portion 21 e, and the punching blade 21 On the outer surface, no step is formed on the base end side from the hole expanding portion 21e.

  Each punching blade 21 is formed with an extrusion hole 21f through which a later-described extrusion member that performs an operation of bending the leg portion 10i of the staple 10 penetrating the binding paper P inward penetrates the front and back of the second penetration portion 21c. Is done.

  The staple push-down portion 22 is provided between the two punching blades 21 provided with a width corresponding to the crown portion 10 h of the staple 10. The staple push-down unit 22 is configured to be movable along the moving direction of the penetrating mechanism main body 20 and is supported by the penetrating mechanism main body 20 while being biased downward by a spring 22a.

  In the stapler 1, when the penetrating mechanism 2 is lowered to a predetermined position, the folding mechanism 5 is activated and the bending of the leg portion 10 i of the staple 10 that has penetrated the binding paper P is started. Therefore, in order to be able to bend the leg portion 10i of the staple 10 at a fixed timing regardless of the difference in the number of binding sheets P to be bound, the difference in the number of binding sheets P is determined by the movement of the staple depressing section 22. The structure is such that it can absorb and the penetrating mechanism 2 can be lowered to a predetermined position.

<Configuration example of punching blade guide>
FIG. 18 is a perspective view illustrating an example of a punching blade guide. Next, the configuration of the punching blade guide will be described with reference to the drawings. As described above, the punching blade 21 has a shape in which the first through portion 21b on the distal end side is offset inward with respect to the second through portion 21c supported by the through mechanism main body portion 20.

  For this reason, in the process in which the blade portion 21a of the punching blade 21 penetrates the binding paper P by the lowering operation of the penetrating mechanism 2, the force applied to the punching blade 21 by the penetrating mechanism main body portion 20 is applied to the second penetrating portion 21c. Thus, a force is applied so that the punching blade 21 is inclined inward.

  Therefore, a punching blade guide 23 is provided between the pair of punching blades 21. As shown in FIG. 1 and the like, the punching blade guide 23 is provided on the lower side of the paper mounting table 80, and can be moved up and down by being biased by a spring 23a between a pair of punching blades 21 penetrating the binding paper P. Provided.

  Although the mechanism for operating the punching blade guide 23 will be described later, in the step of causing the punching blade 21 of the penetration mechanism 2 to penetrate the binding paper P and the leg portion 10i of the staple 10 to penetrate the binding paper P by the operation of the operation handle portion 9. , Protruding between the pair of punching blades 21 to prevent the punching blades 21 from falling down. Then, in the step of bending the leg portion 10 i of the staple 10 by the bending mechanism 5, it is retracted from between the pair of punching blades 21.

<Operation example of penetration mechanism>
FIGS. 19 to 25 are operation explanatory views showing an operation example of the penetration mechanism. Next, with reference to each drawing, an operation of inserting and removing the punching blade 21 with respect to the binding paper P will be described.

  In the waiting state, as shown in FIG. 19, the leg portion 10i of the staple 10 is moved by the staple support portion 21d while the crown portion 10h of the staple 10 is pushed by the staple push-down portion 22 between the pair of extraction blades 21. It is supported.

  When the operation handle portion 9 shown in FIG. 1 or the like is pushed, the connecting shaft portion 20b engaged with the operation handle portion 9 is pushed. When the connecting shaft portion 20b is pushed, the transmission portion 20h of the penetrating mechanism main body portion 20 is pressed by the connecting shaft portion 20b, and the penetrating mechanism main body portion 20 moves downward.

  Here, since the operation handle portion 9 is operated by a person, there is a case where the force is biased. When force is applied to the operation handle portion 9 in an uneven manner, the operation handle portion 9 is tilted, and the connecting shaft portion 20b connected to the operation handle portion 9 is also tilted as shown in FIG.

  The penetrating mechanism main body 20 is provided with a shaft retracting portion 20i in which the shape of the hole 20g into which the connecting shaft 20b is inserted is expanded in the vertical direction with respect to the diameter of the connecting shaft 20b. However, the connecting shaft portion 20b can be inclined.

  Further, the penetrating mechanism main body 20 is provided with a transmission portion 20 h at a position directly above the punching blade 21, and even if the connecting shaft 20 b is inclined with respect to the penetrating mechanism main body 20, the connecting shaft 20 b A force that pushes the connecting shaft portion 20 b by the operation handle portion 9 is applied to the punching blade 21 from directly above the punching blade 21.

  As a result, even when the connecting shaft portion 20b is inclined due to a force applied to the operation handle portion 9 or the like, the penetration mechanism main body portion 20 provided with the punching blade 21 is guided by the guide groove 82a of the main body portion 8. Move downward without tilting. Further, a force for pressing the operation handle portion 9 is applied to the punching blade 21 from directly above the punching blade 21. In this example, a convex portion is provided on the inner surface of the hole 20g to provide the transmitting portion 20h and the shaft retracting portion 10i. It is good also as a structure which provides a part and a shaft evacuation part.

  When the penetrating mechanism 2 moves downward by the operation of the operation handle portion 9 shown in FIG. 1 and the like, and the blade portion 21 a of the punching blade 21 reaches the binding paper P placed on the paper placing table 80, the punching blade 21. Starts to pass through the binding paper P, and the hole P1 is opened in the binding paper P as shown in FIG.

  In the punching blade 21, the first penetrating portion 21 b having a narrow interval between the pair of punching blades 21 first passes through the binding paper P. As described above, in the process in which the blade portion 21a of the punching blade 21 penetrates the binding paper P, the force applied to the punching blade 21 by the penetration mechanism main body portion 20 is offset outward with respect to the first penetrating portion 21b. A force is applied on the second through portion 21c so that the punching blade 21 is inclined inward.

  On the other hand, the punching blade guide 23 protrudes between the pair of punching blades 21 penetrating the binding paper P, so that the punching blades 21 pass through the binding paper P, and each punching blade 21 is moved. Inclination is prevented and the punching blade 21 penetrates the binding paper P substantially perpendicularly.

  When the penetrating mechanism 2 is further lowered, the hole expanding portion 21e of the punching blade 21 reaches the binding paper P as shown in FIG. Since the hole expanding portion 21e has a smooth inclination so that the shape of the outer surface of the punching blade 21 gradually spreads from the first through portion 21b to the second through portion 21c, the through mechanism When the hole expanding portion 21e of the punching blade 21 penetrates the binding paper P by the lowering operation 2, the turning portion P2 is formed on the outer side of the hole P1 of the binding paper P so as to face downward. P1 is expanded outward.

  In the penetration mechanism 2, the leg portion 10 i of the staple 10 is supported by the staple support portion 21 d while the crown portion 10 h of the staple 10 is pushed by the staple push-down portion 22 between the pair of extraction blades 21. The staple support portion 21d is formed at a portion inside the hole expanding portion 21e in each punching blade 21 depending on the shape of the punching blade 21 forming the hole expanding portion 21e.

  Accordingly, when the hole expanding portion 21e of the punching blade 21 passes through the binding paper P by the operation of the penetrating mechanism 2 descending, the leg portion 10i of the staple 10 supported by the staple support portion 21d is the hole of the binding paper P. It penetrates through the part P1.

  When the penetrating mechanism 2 is further lowered, as shown in FIG. 22, the second penetrating portion 21c of the punching blade 21 penetrates the hole portion P1 of the binding paper P and is supported inside the second penetrating portion 21c. A pair of 10 leg portions 10 i penetrates the hole P <b> 1 of the binding paper P.

  In the process in which the second penetration part 21c of the punching blade 21 passes through the hole P1 of the binding paper P, the force applied to the punching blade 21 by the penetration mechanism main body 20 coincides with the second penetration part 21c. No force is applied to tilt 21 inward. Therefore, the extraction blade guide 23 is configured to be retracted in a process in which the second penetration portion 21c of the extraction blade 21 passes through the hole portion P1 of the binding paper P.

  As described above, the interval between the two punching blades 21 is configured to be approximately equal to the inner width of the pair of leg portions 10i of the staple 10 at the portion where the first through portion 21b is formed. The hole P1 of the binding paper P formed by the through portion 21b substantially coincides with the position of the leg 10i of the staple 10.

  Then, the stepped portion of the hole expanding portion 21e on the outside of each punching blade 21 forms a turn-up portion P2 on the outer side of the hole portion P1 of the binding paper P so that the punching blade 21 and the leg portion 10i of the staple 10 are connected to each other. The hole P1 is expanded in the outward direction at an interval that can be overlapped and passed.

  The hole expanding portion 21e has a smooth inclination so that the shape of the outer surface of the punching blade 21 gradually spreads from the first through portion 21b to the second through portion 21c. In the process of penetrating the binding paper P, an increase in resistance when the hole expanding portion 21e of the punching blade 21 passes through the hole P1 of the binding paper P is suppressed.

  Therefore, the force required to lower the penetrating mechanism 2 is small, and the operation load for pushing the operation handle portion 9 is reduced.

  After the penetrating mechanism 2 is further lowered and the crown portion 10h of the staple 10 reaches the binding paper P, the leg portion 10i of the staple 10 is bent inward by the operation of the bending mechanism 5 described later, as shown in FIG. Thus, a pair of leg part 10i is bonded together.

  The hole portion P1 formed in the binding paper P by the punching blade 21 is expanded outward by the hole expanding portion 21e so that the punching blade 21 and the leg portion 10i of the staple 10 can overlap and pass. The turning part to the inner side of the part P1 is not formed. Thereby, when the leg portion 10i of the staple 10 is bent inward, there is no convex portion that deforms the leg portion 10i, and the appearance of the staple 10 that binds the binding paper P can be improved. .

  After the binding paper P is bound by the staple 10, when the penetrating mechanism 2 moves upward by returning the operation handle portion 9 upward, as shown in FIG. 24, the staple support portion 21d of the punching blade 21 is moved to the binding paper P. Reach the back side.

  The staple support portion 21d has a smooth inclination so that the shape of the inner surface of the punching blade 21 gradually narrows from the second penetration portion 21c toward the first penetration portion 21b. Further, a hole P1 through which the staple 10 bound with the binding paper P passes is expanded outward.

  When the staple supporting portion 21d is pulled out from the binding paper P, a force is applied so that the punching blade 21 spreads outward, but the hole P1 formed by the punching blade 21 is widened outward. The increase in resistance when the staple supporting portion 21d of the punching blade 21 passes through the hole P1 of the binding paper P in the step of removing the punching blade 21 from the binding paper P is suppressed.

  Therefore, the force required to raise the penetrating mechanism 2 is small, and the operation load when returning the operation handle portion 9 is also reduced.

  26 and 27 are operation explanatory views showing an operation example of the penetration mechanism depending on the difference in the number of binding sheets. The stapler 1 is configured such that a predetermined maximum number of binding sheets N, for example, N = 15 sheets of binding paper P is bound from the minimum binding number n = 2.

  After the penetrating mechanism 2 is lowered and the crown portion 10h of the staple 10 reaches the binding paper P, the operation of the bending mechanism 5 is started, and the leg portion 10i of the staple 10 is bent. The raising / lowering operation of the penetrating mechanism 2 and the operation of the bending mechanism 5 are interlocked, and the position of the penetrating mechanism 2 where the bending mechanism 5 starts to operate is referred to as a bending mechanism operating position M.

  As shown in FIG. 26, in a state where n sheets of binding paper P, which is the minimum number of sheets, is placed on the paper placement table 80, when the penetrating mechanism 2 is lowered to the bending mechanism operating position M, the staple push-down unit 22 Then, the crown 10h is pressed against the binding paper P in contact with the crown 10h of the staple 10 at a predetermined lower end position.

  On the other hand, as shown in FIG. 27, when N binding sheets P, which is the maximum number of binding sheets, are placed on the sheet placing table 80, when the penetrating mechanism 2 is lowered to the bending mechanism operating position M, the staple push-down unit 22 compresses the spring 22a and is pushed up to a predetermined upper end position to contact the crown portion 10h of the staple 10 and press the crown portion 10h against the binding paper P.

  Thus, in the penetration mechanism 2 that presses the staple 10 and penetrates the binding paper P, the staple push-down portion 22 that presses the crown portion 10h of the staple 10 can be moved in the vertical direction along the operation direction of the penetration mechanism 2. By adopting a configuration in which the spring 22a is biased downward, the folding mechanism operating position M can be set to a constant height regardless of the number of sheets P.

  When the staple push-down part is fixed, when the folding mechanism operating position is set to the minimum number of sheets to be bound, the binding mechanism cannot be lowered to the folding mechanism operating position when the maximum number of binding sheets are bound, and the bending mechanism does not operate. There was a fear. Further, when the folding mechanism operating position is adjusted to the maximum number of sheets to be bound, the staple crown portion cannot be sufficiently pressed when binding the minimum number of sheets to be bound.

  On the other hand, by moving the staple push-down portion 22, the folding mechanism 5 is lowered while sufficiently pushing the crown portion 10h of the staple 10 by lowering the penetration mechanism to the bending mechanism operating position M regardless of the number of sheets to be bound. Can be operated.

<Configuration example of cutting and molding mechanism>
28 is a front view showing an example of the cutting / molding mechanism, FIG. 29 is a rear view showing an example of the cutting / molding mechanism, FIG. 30 is a perspective view of the cutting / molding mechanism viewed from the front, and FIG. It is the perspective view which looked at the cutting / molding mechanism from the back, and next, with reference to each figure, the structure of the cutting / molding mechanism 3 is demonstrated.

  The cutting / molding mechanism 3 is an example of a cutting / molding unit, and includes a cutter plate 30 that cuts the linked staples 10 a and a forming plate 31 that molds the staples 10 cut by the cutter plate 30.

  The cutter plate 30 includes two cutting blades 32, a first groove portion 30 a to which driving force is transmitted via the penetration mechanism 2, a second groove portion 30 b, and a convex portion 30 c, and the vertical direction with respect to the forming plate 31. It is movably attached to.

  The cutting blade 32 is an example of a connecting portion cutting blade, and each cutting blade 32 is formed with a blade portion 32a that is inclined at the tip serving as the lower end. Each cutting blade 32 is attached to the cutter plate 30 in a state where the inclined blade portions 32a face each other.

  In each cutting blade 32, the interval between the inclined blade portions 32a is adjusted to the interval between the pair of holes 10d of the linked staple 10a. Further, the length of the blade portion 32a is configured to be longer than the length of the connecting portion 10c of the connecting staple 10a.

  In the cutting / molding mechanism 3, the cutting blade 32 is retracted from the forming plate 31 at the retracted position where the cutting blade 32 is located on the back side of the forming plate 31 and the cutter plate 30 is raised with respect to the forming plate 31. 32 is not exposed. On the other hand, at the cutting position where the cutter plate 30 is lowered with respect to the forming plate 31, the cutting blade 32 protrudes from the forming plate 31.

  The first groove portion 30a and the second groove portion 30b are provided on the front side of the cutter plate 30 facing the penetration mechanism 2 with a predetermined interval in the vertical direction along the moving direction of the penetration mechanism 2 and the cutting / molding mechanism 3. Provided. The convex portions 30 c are provided so as to protrude outward from both ends in the width direction of the cutter plate 30.

  The first groove portion 30a and the second groove portion 30b have a predetermined shape in which the protruding pin 20c provided in the penetration mechanism 2 is movably fitted, and the lower end side of the first groove portion 30a is formed deeper than the upper end side. In a state where the protruding pin 20c is located on the lower end side of the first groove 30a, substantially the entire protruding pin 20c is fitted into the first groove 30a. Further, in a state where the protruding pin 20c is positioned on the upper end side of the first groove portion 30a, a part of the protruding pin 20c is fitted into the first groove portion 30a.

  The 2nd groove part 30b is comprised by the same depth as the lower end side of the 1st groove part 30a, and the substantially whole protrusion pin 20c fits in the 2nd groove part 30b.

  The forming plate 31 includes a staple forming unit 33 that forms the staple 10 and an opening pressing member 34 that holds the shape of the staple 10 formed by the staple forming unit 33. Further, the forming plate 31 includes a guide convex portion 31 a that guides the movement of the cutting / molding mechanism 3, and a guide groove portion 31 b that guides the movement of the penetration mechanism 2 and the cutting / molding mechanism 3.

  The staple forming portion 33 has a length in the depth direction that is substantially the same as the width in the short direction of the staple 10, an opening wider than the width in the longitudinal direction of the substantially straight staple 10, and the outer width of the crown portion 10 h of the staple 10. It is configured by providing a convex opening combined with a slightly wider opening. The cradle 16 of the staple cartridge 11 described in FIG. 12 and the like protrudes into the opening of the staple forming unit 33 when the staple cartridge 11 is mounted on the stapler 1.

  In the forming plate 31, a pair of opening pressing members 34 are provided below the staple forming portion 33 so as to face each other. The opening pressing member 34 is rotatably attached to the forming plate 31 with a shaft 34a as a fulcrum, and a pair of legs of the staple 10 formed by the staple forming unit 33 in conjunction with the vertical movement of the cutting / forming mechanism 3. It rotates between a position facing at an interval substantially equal to the outer width of the portion 10 i and a position facing at an interval wider than the outer width of the pair of leg portions 10 i of the staple 10 formed by the staple forming portion 33.

  The guide protrusions 31 a protrude outward from both ends of the forming plate 31 in the width direction, are provided on both side surfaces of the main body 8 of the stapler 1 in the width direction, and open along the moving direction of the cutting / molding mechanism 3. 8 guide grooves 82b. The guide convex portion 31a has an oval shape in which two semicircles are connected by a straight line, and the change in the posture of the cutting / molding mechanism 3 in the rotational direction is restricted.

  The guide groove portion 31b is formed on the front side of the forming plate 31 facing the penetrating mechanism 2 in a shape in which the guide convex portion 20d provided in the penetrating mechanism 2 can move, and the moving direction of the penetrating mechanism 2 and the cutting / molding mechanism 3 It is provided along with. The convex portion 30c provided on the cutter plate 30 protrudes into the guide groove portion 31b, and the guide convex portion 20d provided on the penetrating mechanism 2 contacts the convex portion 30c, and the cutter plate 30 is formed by the operation of the penetrating mechanism 2 ascending. Pushed up against the plate 31.

<Operation example of cutting and molding mechanism>
32 to 36 are operation explanatory views showing an operation example of the cutting / molding mechanism. Next, with reference to each drawing, an operation of cutting and forming the staple 10 from the connected staple 10a will be described.

  As shown in FIG. 1 and the like, when the staple cartridge 11 is mounted in the cartridge storage portion 81 of the stapler 1, the cradle 16 protrudes into the staple forming portion 33 of the cutting / forming mechanism 3.

  In the standby state, as shown in FIG. 32, the cutter plate 30 is in the retracted position raised with respect to the forming plate 31, the cutting blade 32 is retracted from the forming plate 31, and the cutting blade 32 is exposed to the staple forming unit 33. do not do.

  Further, the connected staple 10 a is conveyed to the cutting / molding mechanism 3, and the uncut staple 10 positioned at the head of the connected staple 10 a is supported in a state where it is pressed by the staple holder 17 of the staple cartridge 11. .

  In the standby state of the cutting / molding mechanism 3, the cutting blade 32 is exposed even when the staple cartridge 11 is removed from the stapler 1, as shown in FIG. High safety is ensured.

  In the cutting / molding mechanism 3, the operation of the penetrating mechanism 2 that moves downward by the operation of the operation handle portion 9 shown in FIG. 1 or the like is based on the protruding pin 20 c provided in the penetrating mechanism 2 and the first provided on the cutter plate 30. It is transmitted to the cutter plate 30 by the engagement of the groove 30a.

  Thereby, the cutter plate 30 moves to the cutting position lowered with respect to the forming plate 31, and the cutting blade 32 protrudes from the staple forming portion 33 of the forming plate 31 as shown in FIG. 33. When the cutting blade 32 protrudes to the staple forming portion 33, the connecting portion 10c between the uncut staple 10 positioned at the head of the connected staple 10a supported by the cradle 16 and the next staple 10 becomes a cutting blade. Cut at 32.

  FIG. 37 is an operation explanatory view showing the operation of cutting the linked staples, and shows the cutting of the linked staples 10a by the cutting blade 32 in time series. As shown in FIGS. 37 (a) to 37 (c), the pair of left and right cutting blades 32 descends with respect to the connected staple 10a, so that the blade portions 32a at the tips of the respective cutting blades 32 enter the holes 10d. The connecting portions 10c are cut from the holes 10d.

  Here, the blade portions 32a inclined toward the outside are pressed against the pair of left and right connecting portions 10c, whereby the staple 10 to be cut and the staple 10 on the next order are applied from the inside along the longitudinal direction. The connecting portion 10c is cut off in a state where forces are simultaneously applied in opposite directions toward the outside. The space between the hole portions 10d inside the connecting portion 10c is cut in advance by the slit portion 10e, and it is not necessary to cut the vicinity of the center of the staple 10 which is a part of the crown portion 10h and the leg portion 10i.

  Accordingly, it is not necessary to support the staple 10 to be cut and the next staple 10 in a wide range, and the staple 10 can be cut with high accuracy by a simple configuration in which the staple is pressed by the staple presser 17.

  When the cutter plate 30 moves to the cutting position, the forming plate 31 is lowered integrally with the cutter plate 30 in conjunction with the lowering operation of the penetration mechanism 2. When the forming plate 31 is lowered, the staple 10 located at the cut head is supported by the receiving base 16 at a portion corresponding to the crown portion 10h, so that the convex shape of the staple molding portion 33 is formed as shown in FIG. With the opening, bending of the portion corresponding to the leg portion 10i in the first direction is started.

  When the forming plate 31 is further lowered, as shown in FIG. 35, the staple 10 located at the head is bent in the first direction so that the pair of leg portions 10i are substantially parallel to each other, and the crown portion 10h and the leg portions 10i. Is formed. As the forming plate 31 is lowered, the opening pressing member 34 is opened by a rotating operation with the shaft 34a as a fulcrum in conjunction with the operation of bending the leg portion 10i of the staple 10 in the first direction.

  Here, after the forming of the staple 10 by the cutting / forming mechanism 3 is completed, the penetrating mechanism 2 is further lowered in a state where the cutting / forming mechanism 3 is stopped, and the protruding pin 20c provided in the penetrating mechanism 2 is used as a cutter plate. 30 is disengaged from the first groove portion 30a provided in 30 and engaged with the second groove portion 30b.

  In the cutting / molding mechanism 3, the operation of the penetrating mechanism 2 that moves upward by the operation of returning the operation handle 9 upward is performed by the protruding pin 20 c provided in the penetrating mechanism 2 and the second groove 30 b provided in the cutter plate 30. Is transmitted to the cutter plate 30.

  Thereby, after the cutter plate 30 moves to the retracted position raised with respect to the forming plate 31, the forming plate 31 rises integrally with the cutter plate 30. When the forming plate 31 is raised, the formed staple 10 comes out of the staple forming unit 33. Further, the opening pressing member 34 is closed by a rotating operation with the shaft 34a as a fulcrum by the operation of raising the forming plate 31.

  As the forming plate 31 is raised, the leg 10i may be deformed in the direction of opening due to the elasticity of the material of the staple 10 in the process in which the formed staple 10 is pulled out of the staple forming portion 33. When the distance between the opening pressing members 34 is constant, the opening pressing member may collide with the leg portion 10i deformed in the opening direction due to the rising of the forming plate 31.

  In view of this, by adopting a configuration in which the opening pressing member 34 can be opened and closed by the raising and lowering operation of the forming plate 31, as shown in FIG. 36, the forming plate 31 is raised and the formed staple 10 is released from the staple forming unit 33. When it comes off, the opening pressing member 34 rises in the open state to the outside of the pair of leg portions 10i, and each opening pressing member 34 closes, so that the leg portion 10i is bent in the first direction. Retained.

  As a result, the opening pressing member 34 does not collide with the leg portion 10i of the staple 10 and the malfunction of the forming plate 31 does not occur when the forming plate 31 moves up. Then, the staple 10 molded into a predetermined shape by the cutting / molding mechanism 3 can be conveyed to the penetration mechanism 2.

<Configuration example of paper pressing mechanism>
Next, the configuration of the sheet pressing mechanism 4 will be described with reference to the drawings. The sheet pressing mechanism 4 is an example of a sheet pressing unit, and includes a sheet pressing plate 40 that presses the binding sheet P placed on the sheet mounting table 80 shown in FIG. 1 and the like, and a spring 41 that biases the sheet pressing plate 40. The paper pressing mechanism 4 includes a guide convex portion 42 a that guides the movement of the paper pressing plate 40, and a guide groove portion 42 b that guides the movement of the penetrating mechanism 2 and the paper pressing mechanism 4.

  The guide protrusions 42 a protrude outward from both ends in the width direction of the sheet pressing plate 40, are provided on both side surfaces in the width direction of the main body 8 of the stapler 1, and are opened along the moving direction of the sheet pressing mechanism 4. 8 guide grooves 82c. The guide convex portion 42a has an oval shape in which two semicircles are connected by a straight line, and the change in the posture of the sheet pressing mechanism 4 in the rotation direction is restricted.

  The guide groove portion 42 b is formed on the back side of the sheet pressing plate 40 facing the penetrating mechanism 2 so that the guide convex portion 20 e provided in the penetrating mechanism 2 can move, and the moving direction of the penetrating mechanism 2 and the sheet pressing mechanism 4. It is provided along with.

  In the paper pressing mechanism 4, the guide convex portion 20e of the penetrating mechanism 2 abuts on the guide groove portion 42b, the movement of the paper pressing plate 40 is restricted, and the paper pressing plate is interlocked with the movement of the penetrating mechanism 2 moving downward. 40 is urged downward by the spring 41 and protrudes to the paper mounting table 80 to hold the binding paper P.

  Further, when the penetrating mechanism 2 moves upward, the guide convex portion 20e of the penetrating mechanism 2 comes into contact with the guide groove portion 42b, and when the penetrating mechanism 2 moves up, the paper pressing plate 40 is pushed up, and the paper mounting table 80 Evacuate from.

<Configuration example of bending mechanism>
FIG. 38 is a side view showing an example of a bending mechanism, and FIGS. 39A and 39B are perspective views showing an example of a bending mechanism. Next, referring to each drawing, the binding paper P is shown. The structure of the bending mechanism 5 that bends the leg portion 10i of the penetrated staple 10 will be described.

  The folding mechanism 5 is an example of a bending unit, and serves as a bending member that bends the pair of leg portions 10i of the staple 10 that has passed through the binding paper P, and the first bending that bends one leg portion 10i of the staple 10 that has passed through the binding paper P. A member 50R, a second bending member 50L that bends the other leg portion 10i of the staple 10 that has passed through the binding paper P, and a bonding member 50S that bonds the one leg portion 10i and the other leg portion 10i are provided.

  One end of the first bending member 50 </ b> R along the extending direction is supported so as to be rotatable with respect to a shaft 50 a provided in the main body 8. Further, the first bending member 50R is provided with a bent portion 50Rb for bending the leg portion 10i of the staple 10 at the other end portion along the extending direction. As a result, the first bending member 50R moves in the vertical direction by the rotation operation about the shaft 50a as a fulcrum.

  One end of the second bending member 50L along the extending direction is supported coaxially with the first bending member 50R and rotatable relative to the shaft 50a. Further, the second bending member 50L is provided with a bending portion 50Lb for bending the leg portion 10i of the staple 10 at the other end portion along the extending direction. As a result, the second bending member 50L is moved in the vertical direction by the rotation operation with the shaft 50a as a fulcrum.

  One end portion of the bonding member 50S along the extending direction is supported coaxially with the first bending member 50R and the second bending member 50L so as to be rotatable with respect to the shaft 50a. Further, the bonding member 50S is provided with a bonding portion 50Sb for bonding the one leg 10i and the other leg 10i of the staple 10 at the other end along the extending direction. As a result, the bonding member 50S rotates in the vertical direction with the rotation operation about the shaft 50a as a fulcrum.

  The bending mechanism 5 includes a push-up member 51 that pushes up the first bending member 50R, the second bending member 50L, and the bonding member 50S. The push-up member 51 is an example of a driving force transmission means, and is attached to the main body portion 8 in a state in which it can slide in the front-rear direction, and moves in the horizontal direction with respect to the main body portion 8 to move the first bending member 50R, The second bending member 50L and the bonding member 50S are pushed up.

  As shown in FIG. 38 (a), the first bending member 50R includes a shaft 51a provided on the push-up member 51, and the horizontal movement of the push-up member 51 becomes the rotational operation of the first bending member 50R. A cam groove 500R for conversion is provided.

  The cam groove 500R is an example of a driving force transmitting portion, and the movement of the shaft 51a caused by the movement of the push-up member 51 in the horizontal direction causes the rotation groove portion 501R to rotate the first bending member 50R and the movement of the shaft 51a of the push-up member 51. On the other hand, a holding groove 502R that holds the first bending member 50R in a predetermined direction is provided.

  The rotation groove portion 501R has a predetermined width through which the shaft 51a of the push-up member 51 passes, and is configured by a groove that is inclined with respect to the extending direction of the first bending member 50R. The holding groove 502R has a predetermined width through which the shaft 51a of the push-up member 51 passes, and is configured by a groove having a shape along the extending direction of the first bending member 50R. Further, the retracting portion 503R is formed by increasing the width of the portion excluding both end portions along the extending direction of the holding groove portion 502R.

  The cam groove 500R has a rotation groove 501R formed on one end side of the first bending member 50R, a holding groove 502R formed continuously from the rotation groove 501R, and one end of the first bending member 50R. It extends from the part side to the other end part side.

  As shown in FIG. 38B, the second bending member 50L includes a shaft 51a of the push-up member 51, and converts the horizontal movement of the push-up member 51 into a rotation operation of the second bending member 50L. A groove 500L is provided.

  The cam groove 500L is an example of a driving force transmitting portion, and the standby groove portion 504L that holds the second bending member 50L in a predetermined direction and the movement of the shaft 51a of the push-up member 51 with respect to the movement of the shaft 51a of the push-up member 51. Thus, a rotation groove part 501L for rotating the second bending member 50L and a holding groove part 502L for holding the second bending member 50L in a predetermined direction with respect to the movement of the shaft 51a of the push-up member 51 are provided.

  The standby groove portion 504L has a predetermined width through which the shaft 51a of the push-up member 51 passes, and is configured by a groove having a shape along the extending direction of the second bending member 50L. The rotating groove portion 501L has a predetermined width through which the shaft 51a of the push-up member 51 passes, and is configured by a groove that is inclined with respect to the extending direction of the second bending member 50L.

  The holding groove 502L has a predetermined width through which the shaft 51a of the push-up member 51 passes, and is configured by a groove having a shape along the extending direction of the second bending member 50L. In addition, the retracting portion 503L is formed by increasing the width of the portion excluding both ends along the extending direction of the holding groove portion 502L.

  The cam groove 500L has a standby groove portion 504L formed on one end side of the second bending member 50L, a rotation groove portion 501L is formed continuously from the standby groove portion 504L, and a holding groove portion 502L is formed continuously from the rotation groove portion 501L. It is formed and extends from one end side of the second bending member 50L to the other end side.

  As shown in FIG. 38 (c), the bonding member 50S is provided with a shaft 51a of the push-up member 51, and a cam groove 500S for converting the horizontal movement of the push-up member 51 into a rotation operation of the bonding member 50S is provided. It is done.

  The cam groove 500S is an example of a driving force transmission unit. With respect to the movement of the shaft 51a of the push-up member 51, the cam groove 500S is a standby groove portion 504S that holds the bonding member 50S in a predetermined direction and the movement of the shaft 51a of the push-up member 51. A rotation groove 501S that rotates the bonding member 50S and a holding groove 502S that holds the bonding member 50S in a predetermined direction with respect to the movement of the shaft 51a of the push-up member 51 are provided.

  The standby groove portion 504S has a predetermined width through which the shaft 51a of the push-up member 51 passes, and is configured by a groove having a shape along the extending direction of the bonding member 50S. The rotation groove portion 501S has a predetermined width through which the shaft 51a of the push-up member 51 passes, and is configured by a groove that is inclined with respect to the extending direction of the bonding member 50S.

  The holding groove portion 502S has a predetermined width through which the shaft 51a of the push-up member 51 passes, and is configured by a groove having a shape along the extending direction of the bonding member 50S. In addition, the retracting portion 503S is formed by increasing the width of the portion excluding both end portions along the extending direction of the holding groove portion 502S.

  In the cam groove 500S, a standby groove portion 504S is formed on one end side of the bonding member 50S, a rotation groove portion 501S is formed continuously from the standby groove portion 504S, and a holding groove portion 502S is formed continuously from the rotation groove portion 501S. Then, the bonding member 50S extends from one end side to the other end side.

  The bending mechanism 5 includes a first bending member 50R disposed on the right side of the bonding member 50S when the stapler 1 is viewed from the front, and a second bending member 50L disposed on the left side. The second bending member 50L and the bonding member 50S are coaxially supported by the shaft 50a.

  Further, the bending mechanism 5 includes a cam groove 500R of the first bending member 50R, a cam groove 500L of the second bending member 50L, and a cam groove 500S of the bonding member 50S, the first bending member 50R, and the first bending member 50R. The second bending member 50L and the bonding member 50S overlap in the parallel direction, and the shaft 51a of the push-up member 51 enters each cam groove.

  The bending mechanism 5 operates the first bending member 50R, the second bending member 50L, and the bonding member 50S at different timings with respect to the movement of the push-up member 51.

  In this example, first, the first bending member 50R is rotated, and one leg portion 10i of the staple 10 is bent by the first bending member 50R. Next, the rotation of the first bending member 50R is stopped and the rotation amount of the second bending member 50L is increased, and the other leg portion 10i of the staple 10 is bent by the second bending member 50L.

  Next, the rotation of the second bending member 50L is stopped and the rotation amount of the bonding member 50S is increased, and the one leg 10i and the other leg 10i of the staple 10 are bonded together by the bonding member 50S.

  For this reason, the standby groove part is not provided in the cam groove 500R of the first bending member 50R. In contrast, the standby groove portion 504L is provided in the cam groove 500L of the second bending member 50L, and the standby groove portion 504S is provided in the cam groove 500S of the bonding member 50S.

  As a result, the bending mechanism 5 is configured such that the shaft 51a of the push-up member 51 passes through the rotation groove 501R of the cam groove 500R in the first bending member 50R, and the standby groove portion of the cam groove 500L in the second bending member 50L. Pass through 504L.

  Therefore, the amount of rotation of the first bending member 50R and the amount of rotation of the second bending member 50L are made different, and the amount of rotation of the second bending member 50L is reduced at the timing when the first bending member 50R starts to rotate.

  Further, the standby groove portion 504S of the cam groove 500S of the bonding member 50S is configured to be longer than the standby groove portion 504L of the cam groove 500L of the second bending member 50L.

  As a result, the shaft 51a of the push-up member 51 passes through the standby groove 504S of the cam groove 500S in the bonding member 50S at a timing when the shaft 51a passes through the rotation groove 501L of the cam groove 500L in the second bending member 50L.

  Therefore, the rotation amount of the bonding member 50L is suppressed to be small at the timing when the rotation amount of the second bending member 50L is increased by changing the rotation amount of the second bending member 50L and the bonding member 50S.

  Further, the holding groove portion 502R of the cam groove 500R of the first bending member 50R is configured to be longer than the holding groove portion 502L of the cam groove 500L of the second bending member 50L.

  As a result, the shaft 51a of the push-up member 51 passes through the rotation groove 501L of the cam groove 500L in the second bending member 50L at the timing of passing through the holding groove 502R of the cam groove 500R in the first bending member 50R.

  Therefore, the rotation amount of the second bending member 50L increases at the timing when the first bending member 50R stops rotating.

  Further, the holding groove portion 502L of the cam groove 500L of the second bending member 50L is configured to be longer than the holding groove portion 502S of the cam groove 500S of the bonding member 50S.

  As a result, the shaft 51a of the push-up member 51 passes through the rotation groove 501S of the cam groove 500S in the bonding member 50S at the timing of passing through the holding groove 502L of the cam groove 500L in the second bending member 50L.

  Therefore, the rotation amount of the bonding member 50S increases at the timing when the second bending member 50L stops rotating.

  In the bending mechanism 5, the movement of the operation handle portion 9 is transmitted to the push-up member 51 that operates the first bending member 50R, the second bending member 50L, and the bonding member 50S.

  FIG. 40 is a side view showing an example of the driving force transmission mechanism of the bending mechanism. The bending mechanism 5 includes a clincher cam 57 and a clincher lever 58 that transmit the movement of the operation handle portion 9 to the push-up member 51.

  The clincher cam 57 is an example of a driving force transmission means, and includes a pressing portion 57a that is pressed by the connecting shaft portion 20b of the penetration mechanism main body portion 20 that is connected to the operation handle portion 9, and a gear cam portion 57b that rotates the clincher lever 58. The main body 8 is rotatably attached with the shaft portion 57c as a fulcrum.

  The clincher lever 58 is an example of driving force transmission means, and includes a gear portion 58a that meshes with the gear cam portion 57b of the clincher cam 57, and an engaging portion 58b that is engaged with the push-up member 51, and the main body portion 8 is coaxial with the gear portion 58a. The shaft portion 58c is attached to be rotatable.

  When the operating handle 9 is pushed down and the penetrating mechanism main body 20 is lowered to a predetermined position, the clincher cam 57 is pressed by the connecting shaft 20b. When the pressing portion 57a is pressed by the connecting shaft portion 20b, the clincher cam 57 rotates in the arrow S1 direction with the shaft portion 57c as a fulcrum.

  The clincher lever 58 rotates in the direction of the arrow Q1 with the shaft portion 58c serving as a fulcrum and the gear portion 58a rotating due to the displacement of the gear cam portion 57b caused by the clincher cam 57 rotating about the shaft portion 57c.

  When the clincher lever 58 rotates in the direction of the arrow Q1 with the shaft portion 58c as a fulcrum, the push-up member 51 is pushed by the engaging portion 58b of the clincher lever 58 and retracts in the direction of the arrow R1 while compressing the spring 51b. Then, when the push-up member 51 is retracted in the arrow R1 direction, the first bending member 50R, the second bending member 50L, and the bonding member 50S are operated at a predetermined timing.

  When the operation handle portion 9 is pushed up, the push-up member 51 moves forward in the direction of the arrow R2 by pressing with the spring 51b, and the first bending member 50R, the second bending member 50L, and the bonding member 50S return to the initial positions. Further, the clincher lever 58 rotates in the arrow Q2 direction with the shaft portion 58c as a fulcrum.

  When the clincher lever 58 rotates in the direction of the arrow Q2 with the shaft portion 58c as a fulcrum, the clincher cam 57 rotates in the direction of the arrow S2 with the shaft portion 57c as a fulcrum by the meshing of the gear portion 58a and the gear cam portion 57b, and returns to the initial position. To do.

  In the bending mechanism 5, in the step of pushing up the first bending member 50 </ b> R and the second bending member 50 </ b> L, the distance between the first bending member 50 </ b> R and the second bending member 50 </ b> L spreads outward and then narrows inward. Configured.

  Further, the bending mechanism 5 moves the leg portion 10i of the staple 10 penetrating the binding paper P before starting the operation of bending the leg portion 10i of the staple 10 with the first bending member 50R and the second bending member 50L. Extrusion members 52 that perform the bending operation inside are provided.

  The pushing member 52 is urged by a spring (not shown) by a rotation operation with the shaft 52 a as a fulcrum, protrudes inward from the pushing hole 21 f provided in the punching blade 21, and the leg portion 10 i of the staple 10 supported by the punching blade 21. Bend inward.

  Further, the bending mechanism 5 includes a pushing member operating mechanism 53 that operates the pushing member 52 in conjunction with the operation of the penetrating mechanism 2 that moves up and down by operation of the operation handle portion 9.

  The pushing member operating mechanism 53 includes a slide member 54 to which the operation of the operation handle portion 9 is transmitted, and a spring 55 a that biases the slide member 54.

  The slide member 54 includes a pin 54a that engages with a link 92 to which the operation handle portion 9 is transmitted, a guide portion 54b that operates the push-out member 52, and an operation convex portion 54c that operates the extraction blade guide 23. It is attached to the main body 8 in a state in which sliding movement is possible in the front-rear direction. The slide member 54 constitutes a guide driving unit that operates the punching blade guide 23 in conjunction with the operation of the penetrating mechanism 2.

  As shown in FIG. 3, the link 92 connected to the operation handle portion 9 is provided with an elongated hole portion 92 b that engages with the pin 54 a of the slide member 54. In the displacement of the link 92 in the operation in which the operation handle portion 9 is pushed down and rotated, the driving force is not transmitted to the pin 54a due to the shape of the long hole portion 92b until the operation handle portion 9 is pushed down to a predetermined position. The slide member 54 is not displaced.

  When the operation handle portion 9 is pushed down to a predetermined position, the slide member 54 moves rearward because the pin 54a is pushed rearward. Further, when the link 92 is displaced by the operation handle portion 9 being pushed up and rotated, the slide member 54 is moved forward by being biased by the spring 55a.

  As shown in FIG. 18, the guide portion 54 b has a guide surface that comes into contact with the pushing member 52, and opens and closes the pushing member 52 as the slide member 54 slides. As shown in FIG. 1 and the like, the operation convex portion 54c abuts on the extraction blade guide 23, and moves the extraction blade guide 23 in the front-rear direction as the slide member 54 slides.

  The pushing member operating mechanism 53 is configured such that the operation of the operation handle 9 is transmitted through the link 92, and the operation of the operation handle 9 causes the penetration mechanism 2 to pass the staple 10 through the binding paper P and the cutting / molding mechanism 3. With the operation of cutting and forming the next staple 10 from the connected staple 10a, the slide member 54 moves backward.

  As the slide member 54 moves backward, the pushing member 52 rotates in a closing direction guided by the guide surface of the guide portion 54b and protrudes inward from the pushing hole 21f of the punching blade 21 lowered to a predetermined position. Further, as the slide member 54 moves backward, the punching blade guide 23 is pushed back by the operating convex portion 54 c and retracts from between the punching blades 21.

  When the operation handle 9 is pushed up, the slide member 54 moves forward by being biased by the spring 55a. When the slide member 54 moves forward, the pushing member 52 rotates in the opening direction guided by the guide surface of the guide portion 54b and retracts outward from the pushing hole 21f of the punching blade 21. Further, as the slide member 54 advances, the punching blade guide 23 is advanced by being biased by the spring 23 a and protrudes between the punching blades 21.

<Operation example of bending mechanism>
FIGS. 41 to 45 are operation explanatory views showing an operation example of the bending mechanism. Next, referring to the respective drawings, the first bending member 50R and the second bending member 50L for bending the leg portion 10i of the staple 10 are described. The operation of the bonding member 50S will be described.

  When the first bending member 50R, the second bending member 50L, and the bonding member 50S are in their initial positions, in the first bending member 50R, the shaft 51a of the push-up member 51 is in the rotating groove portion 501R of the cam groove 500R. To position.

  In the second bending member 50L, the shaft 51a of the push-up member 51 is positioned in the standby groove portion 504L of the cam groove 500L. Furthermore, in the bonding member 50S, the shaft 51a of the push-up member 51 is positioned in the standby groove portion 504S of the cam groove 500S.

  When the push-up member 51 starts to retract in the direction of the arrow R1, in the first bending member 50R, as shown in FIG. 41A, the shaft 51a of the push-up member 51 passes through the rotation groove portion 501R of the cam groove 500R. The first bending member 50R starts rotating around the shaft 50a as a fulcrum.

  When the first bending member 50R starts to rotate, as shown in FIG. 45 (a), the bending portion 50Rb starts to rise, and as described later, the staple 10 bent inward by the push-out member 52, as shown in FIG. One leg 10i is bent by the first bending member 50R.

  Further, when the push-up member 51 starts to retreat in the direction of the arrow R1, in the second bending member 50L, as shown in FIG. 41B, the shaft 51a of the push-up member 51 passes through the standby groove portion 504L of the cam groove 500L. As a result, the second bending member 50L starts to rotate with a smaller amount of rotation than the first bending member 50R.

  At the timing when the first bending member 50R starts to bend one leg portion 10i of the staple 10, the second bending member 50L has a small amount of rotation, and the second bending member 50L causes the other leg portion 10i of the staple 10 to be bent. The operation of bending is not performed.

  Further, when the push-up member 51 starts to retract in the direction of the arrow R1, in the bonding member 50S, as shown in FIG. 41 (c), the shaft 51a of the push-up member 51 passes through the standby groove portion 504S of the cam groove 500S. The bonding member 50S starts to rotate with a smaller amount of rotation than the first bending member 50R.

  At the timing when the first bending member 50R starts to bend one leg 10i of the staple 10, the rotation amount of the bonding member 50S is small, and the operation of bonding the leg 10i of the staple 10 by the bonding member 50S is performed. I will not.

  As shown in FIG. 42 (a), the push-up member 51 moves backward in the direction of the arrow R1, and the shaft 51a of the push-up member 51 moves from the rotation groove portion 501R of the cam groove 500R to the holding groove portion 502R in the first bending member 50R. When entering, the first bending member 50R is in a substantially horizontal orientation and stops rotating.

  When the first bending member 50R stops rotating in a substantially horizontal orientation, as shown in FIG. 45 (b), one leg 10i of the staple 10 is pressed by the bending portion 50Rb, and the first bending member The bending operation of one leg 10i of the staple 10 by 50R is completed.

  At the timing when the shaft 51a of the push-up member 51 enters the holding groove portion 502R of the cam groove 500R in the first bending member 50R, the second bending member 50L has the shaft of the push-up member 51 as shown in FIG. 51a enters the rotation groove portion 501R from the standby groove portion 504L of the cam groove 500L, whereby the rotation amount of the second bending member 50L increases.

  When the amount of rotation of the second bending member 50L increases, as shown in FIG. 45 (c), the amount of ascent of the bending portion 50Lb increases, so that the other leg of the staple 10 bent inward by the pushing member 52 is obtained. The part 10i is bent by the second bending member 50L.

  Further, at the timing when the shaft 51a of the push-up member 51 enters the holding groove portion 502R of the cam groove 500R in the first bending member 50R, the bonding member 50S has the shaft of the push-up member 51 as shown in FIG. 51a passes through the standby groove portion 504S of the cam groove 500S, so that the rotation amount of the bonding member 50S can be reduced.

  As shown in FIG. 43 (b), when the push-up member 51 is retracted in the direction of the arrow R1, the shaft 51a of the push-up member 51 moves from the rotation groove 501L of the cam groove 500L to the holding groove 502L as shown in FIG. Upon entering, the second bending member 50L is in a substantially horizontal orientation and stops rotating.

  When the second bending member 50L stops rotating in a substantially horizontal orientation, as shown in FIG. 45 (d), the other leg portion 10i superimposed on one leg portion 10i of the staple 10 is bent to the bending portion 50Lb. And the bending operation of the other leg 10i of the staple 10 by the second bending member 50L is completed.

  At the timing when the shaft 51a of the push-up member 51 enters the holding groove portion 502L of the cam groove 500L in the second bending member 50L, the shaft of the push-up member 51 is formed in the first bending member 50R as shown in FIG. When the 51a passes through the holding groove portion 502R of the cam groove 500R, the first bending member 50R is held in a state where the rotation is stopped.

  The cam groove 500R of the first bending member 50R is formed with a retracting part 503R in the holding groove part 502R, so that when the shaft 51a of the push-up member 51 passes through the retracting part 503R, the first bending member 50R is moved vertically. A predetermined amount of displacement is possible.

  In a state where the leg portion 10i of the staple 10 is pressed by the first bending member 50R, the reaction force applied from the leg portion 10i of the staple 10 is generated between the cam groove 500R of the first bending member 50R and the shaft 51a of the push-up member 51. It becomes a sliding resistance and becomes a load with respect to the force for moving the push-up member 51. Since the push-up member 51 moves backward by the force with which the operation handle portion 9 is pushed, an increase in the load applied to the push-up member 51 leads to an increase in the operation load.

  Therefore, the reaction force applied from the leg portion 10i of the staple 10 can be released by making the first bending member 50R displaceable in the vertical direction while maintaining the bent state of the leg portion 10i of the staple 10. In addition, the first bending member 50R can be retracted. Thereby, the sliding resistance between the cam groove 500R of the first bending member 50R and the shaft 51a of the push-up member 51 is reduced, and the operation load is reduced.

  Further, at the timing when the shaft 51a of the push-up member 51 enters the holding groove portion 502L of the cam groove 500L in the second bending member 50L, the bonding member 50S has the shaft of the push-up member 51 as shown in FIG. When 51a enters the rotation groove 501S from the standby groove 504S of the cam groove 500S, the rotation amount of the bonding member 50S increases.

  As shown in FIG. 44 (c), when the push-up member 51 is retracted in the direction of the arrow R1, the shaft 51a of the push-up member 51 enters the holding groove 502S from the rotation groove 501S of the cam groove 500S as shown in FIG. The bonding member 50S is in a substantially horizontal orientation and stops rotating.

  When the bonding member 50S stops rotating in a substantially horizontal orientation, as shown in FIG. 45 (e), the staples 10 folded and overlapped by the first bending member 50R and the second bending member 50L are stacked. One leg portion 10i and the other leg portion 10i are bonded together by the bonding member 50S, and the bending and bonding operation of the leg portions 10i of the staple 10 is completed.

  At the timing when the shaft 51a of the push-up member 51 enters the holding groove portion 502S of the cam groove 500S in the bonding member 50S, in the first bending member 50R, as shown in FIG. 44 (a), the shaft 51a of the push-up member 51 is By passing through the holding groove portion 502R of the cam groove 500R, the first bending member 50R is held in a state where the rotation is stopped in a substantially horizontal direction.

  Further, at the timing when the shaft 51a of the push-up member 51 enters the holding groove portion 502S of the cam groove 500S in the bonding member 50S, the second bending member 50L has the shaft of the push-up member 51 as shown in FIG. 44 (b). The 51a passes through the holding groove portion 502L of the cam groove 500L, whereby the second bending member 50L is held in a state where the rotation is stopped in a substantially horizontal direction.

  The cam groove 500L of the second bending member 50L is formed with a retracting portion 503L in the holding groove portion 502L, so that when the shaft 51a of the push-up member 51 passes through the retracting portion 503L, the second bending member 50L is moved vertically. A predetermined amount of displacement is possible. Thereby, the load in the operation | movement which the raising member 51 reverse | retreats is reduced.

  Further, the cam groove 500S of the bonding member 50S is bonded to the holding groove portion 502S when the operating handle portion 9 is pushed to a position where the shaft 51a of the push-up member 51 passes through the retracting portion 503S by forming the retracting portion 503S in the holding groove portion 502S. The alignment member 50S can be displaced by a predetermined amount in the vertical direction.

  As a result, at the timing when the binding of the paper with the staple 10 is completed, the load applied to the operation handle portion 9 is reduced, and the operator can recognize that the operation of binding the paper has been completed.

  Here, when the number of binding sheets is small, the push-up member 51 is further retracted in the direction of the arrow R1, and in the first bending member 50R, the shaft 51a of the push-up member 51 passes through the retracting portion 503R of the cam groove 500R. By reaching the end of the holding groove 502R, the first bending member 50R rises by a predetermined amount and presses one leg 10i of the staple 10.

  Further, the push-up member 51 is further retracted in the direction of the arrow R1, and in the second bending member 50L, the shaft 51a of the push-up member 51 passes through the retracting portion 503L of the cam groove 500L and reaches the end of the holding groove portion 502L. Thus, the second bending member 50L rises by a predetermined amount and presses the other leg 10i of the staple 10.

  Further, the push-up member 51 is further retracted in the direction of arrow R1, and in the bonding member 50S, the shaft 51a of the push-up member 51 passes through the retracting portion 503S of the cam groove 500S and reaches the end of the holding groove portion 502S. The bonding member 50S is raised by a predetermined amount and presses one leg 10i and the other leg 10i on which the staples 10 are overlapped. Thereby, regardless of the number of sheets P, the time for pressing the leg portion 10i of the staple 10 with the bonding member 50S can be lengthened, and the leg portion 10i can be securely bonded.

  In a stapler using staples made of a metal material, a structure in which a force for pushing down the operation handle portion is directly applied to the staples, or a paper mounting table is displaced by using a force to push down the operation handle portion, so that the staple leg portion Is bent. In the configuration in which the sheet placing table is displaced by moving up and down, the binding operation tends to become unstable when the number of sheets P is increased.

  In the stapler 1 according to the present embodiment, by using the staple 10 made of a soft material such as paper, the force necessary for bending the leg portion 10i is weaker than that of the metal staple. For this reason, the first bending member 50R is configured by transmitting the force of the operation handle portion 9 to the bending mechanism 5 using the driving force transmission means of the cam mechanism such as the clincher cam 57 and the clincher lever 58. The second bending member 50L and the bonding member 50S can be operated without increasing the operation load on the operation handle portion 9.

  And since each of the 1st bending member 50R, the 2nd bending member 50L, and the bonding member 50S can be driven independently with the force of the operation handle part 9, the movement of each member is stabilized, and binding is carried out. Operation can be performed reliably. In addition, since the operation load can be changed by the shape of the cam, etc., it is possible to prevent an increase in the operation load and to recognize that the paper has been bound by the change in the operation load, improving usability. To do.

<Configuration example of transport mechanism>
Next, with reference to each figure, the connection staple 10a and the conveyance mechanism 6 that conveys the staple 10 cut and formed from the connection staple 10a will be described.

  The conveyance mechanism 6 is an example of a conveyance unit, and includes a linked staple 10a, a pusher 60 that conveys the staple 10 cut from the linked staple 10a and formed, and a spring 60a that biases the pusher 60 forward.

  The pusher 60 engages with the hole 10d of the connected staple 10a to feed the connected staple 10a, the staple pusher 62 that pushes the staple 10 cut and formed from the connected staple 10a, and an operation handle. The pin 63 which engages with the link 92 to which the operation of the section 9 is transmitted is provided.

  The link 92 connected to the operation handle portion 9 is provided with a long hole portion 92a with which the pin 63 of the pusher 60 is engaged. In the displacement of the link 92 in the operation in which the operation handle portion 9 is pushed down to rotate, the pusher 60 moves backward by pushing the pin 63 backward. Further, in the displacement of the link 92 in the operation in which the operation handle portion 9 is pushed up and rotated, the pusher 60 moves forward by being biased by the spring 60a.

  In this example, the pusher 60 is made of a resin material, and the feed claw 61 and the staple pushing portion 62 are integrally formed. The feeding claws 61 are provided on the upper surface of the pusher 60, and are provided at two locations on the left and right as shown in FIG. 6 corresponding to the pair of holes 10d of the linked staple 10a. As shown in FIG. 1, when the staple cartridge 11 is mounted in the cartridge storage portion 81 of the stapler 1, the feeding claw 61 protrudes from the groove portion 14 b on the bottom surface of the staple conveyance path 14.

  The front surface of the feeding claw 61 along the conveying direction of the connected staples 10a is configured to be substantially vertical as the engaging surface 61a, and the rear surface is formed as a slope as the non-engaging surface 61b. The feed claw 61 is configured integrally with the pusher 60 by a support portion 61c extending rearward from the rear surface side.

  Since the pusher 60 is made of a resin material, the support portion 61c of the feed claw 61 can be elastically deformed. Depending on the shape of the feed claw 61, the feed claw 61 can be moved by the movement of the pusher 60 in the front-rear direction. A retracting means that allows the hole 10d to appear and disappear is configured.

  That is, in the operation in which the pusher 60 moves forward, the engaging surface 61a of the feed claw 61 is engaged with the hole 10d of the connected staple 10a, and the connected staple 10a is conveyed forward. On the other hand, in the operation in which the pusher 60 moves backward, a force that pushes down the feed claw 61 is generated due to the shape of the inclined surface of the non-engagement surface 61b of the feed claw 61, and the feed claw 61 of the connected staple 10a is caused by elastic deformation of the support portion 61c. Withdrawing from the hole 10d, the connected staple 10a remains stopped.

  The staple pusher 62 is provided on the front surface of the pusher 60 and, as shown in FIG. 10, can press the staple 10 formed in a so-called U-shape with legs 10i formed at both ends of the crown 10h. Configured in shape.

  The staple pusher 62 protrudes to the cutting / molding mechanism 3 by the operation of the pusher 60 moving forward, and conveys the formed staple 10 to the penetrating mechanism 2. Since the feeding claw 61 and the staple pusher 62 are integrally formed with the pusher 60, the linked staple 10a is transported to the cutting / molding mechanism 3 as the pusher 60 moves forward, and is cut from the linked staple 10a and molded. The staple 10 positioned at the head is conveyed to the penetration mechanism 2.

<Configuration example of desorption mechanism>
FIG. 46 is a side sectional view of the stapler showing an example of the detaching mechanism. Next, when the staple cartridge 11 is attached, the predetermined position of the connected staple 10a housed in the staple cartridge 11 is interlocked with the transport mechanism 6. The configuration of the detaching mechanism 7A that performs the transport to is described.

  The detaching mechanism 7A is an example of a detaching means, and includes an operation lever 70 and a link 71 that transmits the operation of the operation lever 70 to the transport mechanism 6. The operation lever 70 is provided behind the cartridge storage portion 81 of the main body 8 and rotates around a shaft 70a.

  The link 71 is an example of an operating force transmission means. A long hole portion 71a that engages with the pin 63 of the pusher 60 is provided on the front end side, and the rear end side is rotatably attached to the operation lever 70 with the shaft 71b as a fulcrum. . The long hole portion 71 a provided in the link 71 extends along the movement direction of the pusher 60 in the operation of the operation handle portion 9, and the pusher 60 and the link 71 are engaged by the operation of the operation handle portion 9. The movement of 60 is not hindered.

  On the other hand, when the operation lever 70 is rotated backward with the shaft 70a as a fulcrum, the link 71 connected by the shaft 71b moves backward, so that the pin 63 of the pusher 60 is pushed backward, and the pusher 60 moves backward. To do. In the operation in which the pusher 60 moves backward, the feeding claw 61 is retracted from the hole 10d of the connected staple 10a, and the connected staple 10a is kept stopped. Further, when the operation lever 70 is rotated forward about the shaft 70a as a fulcrum, the pusher 60 is moved forward by being biased by the spring 60a. In the operation in which the pusher 60 moves forward, the engaging surface 61a of the feed claw 61 is engaged with the hole 10d of the connected staple 10a, and the connected staple 10a is conveyed forward.

  FIG. 47 is an operation explanatory view showing an example of the linked staple transport operation by the operation of the detaching mechanism. Since the feeding claw 61 of the pusher 60 is engaged with the hole 10d of the connected staple 10a, when the pusher 60 moves forward, the connected staple 10a is moved as shown in FIGS. 47 (a) to 47 (b). Advance.

  As shown in FIG. 46, when the operation lever 70 rotates to the mounting position, the linked staple 10a advances to a predetermined standby position as shown in FIG. 47 (c). In this example, the position where the leading end of the linked staple 10a hits the punching blade 21 of the penetrating mechanism 2 is the standby position.

  As a result, the staple cartridge 11 is mounted on the stapler 1, and the connected staple 10 a can be advanced to a predetermined standby position by the operation of the attachment / detachment mechanism 7 </ b> A. By the operation, the position of the linked staple 10a can be reliably set at a predetermined standby position.

  When removing the staple cartridge 11, the operation lever 70 is rotated backward from the state shown in FIG. When the pusher 60 is moved backward by the operation of rotating the operation lever 70 backward, the shape of the feed claw 61 causes the feed claw 61 to be retracted from the hole 10d of the connected staple 10a, and the connected staple 10a is kept stopped. .

  When the operation lever 70 is rotated to the removal position, the staple cartridge 11 is pushed up with the operation lever 70 held at the removal position. Thereby, removal of the staple cartridge 11 can be performed easily.

  When the staple cartridge 11 is removed while the linked staple 10a remains due to a jam or the like, if the staple cartridge 11 is removed while the pusher 60 is moved forward, the leading staple of the linked staple 10a and the feed claw of the pusher 60 are removed. The staple cartridge 11 is removed while 61 is in the engaged state, and the connected staple 10a is pulled out.

  In contrast, the present embodiment is configured such that the staple cartridge 11 cannot be removed without the operation lever 70 being operated. By operating the operation lever 70, the pusher 60 is retracted to retract the feed claw 61. Thus, the staple cartridge 11 is removed by releasing the engaged state between the leading staple of the linked staple 10a and the feeding claw 61 of the pusher 60, and the connected staple 10a is prevented from being pulled out.

<Overall operation example of stapler>
48 to 51 are operation explanatory views showing an operation example of the operation handle portion, FIGS. 52 to 63 are operation explanatory views showing an operation example of the entire stapler, and FIGS. 64 to 75 are views of the penetrating mechanism and the bending mechanism. Operation explanatory diagrams showing an operation example, FIGS. 76 to 87 are operation explanatory diagrams showing an operation example of the cutting / molding mechanism. Next, referring to each drawing, an overall operation example of the stapler 1 of the present embodiment will be described. Will be described.

<Standby state>
In the standby state shown in FIGS. 48, 52, 64, and 76, the leading staple 10 cut and formed from the connected staple 10 a is positioned in the penetration mechanism 2. Further, the staple 10 next to the connected staple 10 a is positioned in the cutting / molding mechanism 3.

  The linked staple 10a conveyed to the cutting / molding mechanism 3 is conveyed to a predetermined standby position where it contacts the punching blade 21 of the penetrating mechanism 2 by the operation of the above-described detaching mechanism 7A. Further, in the cutting / molding mechanism 3, the cutter plate 30 is in the retracted position raised with respect to the forming plate 31, and the cutting blade 32 is not exposed.

<Start of cutting blade operation>
When the operation handle portion 9 is pushed downward as indicated by an arrow A from the standby state shown in FIG. 48, the link 92 connected to the operation handle portion 9 by the connecting shaft portion 20b of the penetration mechanism 2 supports the connecting shaft portion 20b. Rotate in the direction of arrow B. Thereby, as shown in FIG. 53, the pusher 60 starts to retract. In the operation in which the pusher 60 moves backward, as described above, the feeding claw 61 is detached from the connected staple 10a, and the connected staple 10a is kept stopped.

  Further, when the operation handle portion 9 pushes the connecting shaft portion 20b downward, the penetrating mechanism 2 starts to descend, and the paper pressing plate 40 of the paper pressing mechanism 4 is attached to the spring 41 in conjunction with the operation of the penetrating mechanism 2. The bound paper P placed on the paper placement table 80 is restrained and lowered. In the penetration mechanism 2, the blade portion 21a of the punching blade 21 is stuck in the binding paper P as shown in FIG. In the cutting / molding mechanism 3, the cutting blade 32 protrudes from the staple forming portion 33 of the forming plate 31 as shown in FIG. 77 in conjunction with the operation of the penetration mechanism 2.

  The operation handle portion 9 is rotated about the imaginary fulcrum regulated by the locus of the cam groove 91 guided by the shaft 90 and the locus of the connecting shaft portion 20b, so that the penetrating mechanism 2 is lowered to move the staple 10 However, the operation load becomes light at the timing when the sheet starts to penetrate the binding paper P.

<Starting molding and sliding member operation>
When the operation handle portion 9 is pushed to the position shown in FIG. 54, the pusher 60 is continuously retracted. In the penetration mechanism 2, the first penetration part 21 b of the punching blade 21 penetrates the binding paper P as shown in FIG. 66. The pair of punching blades 21 prevents the cutting blade guide 23 from projecting inside the first penetrating portion 21b penetrating the binding paper P, and the tip end side of the punching blade 21 is prevented from tilting inward.

  In the cutting / molding mechanism 3, as shown in FIG. 78, the cutter plate 30 and the forming plate 31 are lowered integrally, and as shown in FIG. 37, the staple 10 positioned at the head of the connected staple 10 a is cut by the cutting blade 32. Disconnected. Further, the staple forming portion 33 of the forming plate 31 comes into contact with the cut staple 10 to start forming the staple 10, and the leg portion 10 i of the staple 10 is gradually bent by the staple forming portion 33.

  54, when the operation handle portion 9 is pushed to the position shown in FIG. 54, as shown in FIG. 49, the long hole portion 92b of the link 92 contacts the pin 54a of the slide member 54, and the slide member 54 starts to retreat. .

<Begin hole expansion>
When the operation handle portion 9 is pushed to the position shown in FIG. 55, the pusher 60 and the slide member 54 are continuously retracted. In the penetration mechanism 2, as shown in FIGS. 21 and 67, the hole expanding portion 21e of the punching blade 21 reaches the binding paper P, and the hole P1 opened in the binding paper P is expanded outward. In the cutting / forming mechanism 3, as shown in FIG. 79, the forming of the staple 10 is continued.

<Start of opening holding member operation>
When the operation handle 9 is pushed to the position shown in FIG. 56, the pusher 60 and the slide member 54 are continuously retracted. In the penetration mechanism 2, the hole expanding portion 21e of the punching blade 21 penetrates the binding paper P as shown in FIG. In the cutting / molding mechanism 3, as shown in FIG. 80, as the cutter plate 30 and the forming plate 31 are lowered, the opening pressing member 34 comes into contact with the opening cam surface 84a formed in the main body 8 and moves outward. Start to open.

<Starting the cutting blade guide>
When the operation handle portion 9 is pushed to the position shown in FIG. 57, the pusher 60 and the slide member 54 continue to move backward, and the operation convex portion 54c of the slide member 54 comes into contact with the extraction blade guide 23, and the spring The punching blade guide 23 starts to retract while compressing 23a.

  In the penetrating mechanism 2, as shown in FIG. 69, the second penetrating portion 21c of the punching blade 21 penetrates the binding paper P, so that the staple 10 held inside the punching blade 21 penetrates the binding paper P. . As for the front end side of each punching blade 21, the inside is guided by the first bending member 50R and the second bending member 50L, and even if the punching blade guide 23 is retracted, the displacement in the tilting direction is suppressed. .

  As shown in FIGS. 35 and 81, the cutting / molding mechanism 3 moves the staple 10 in the first direction so that the pair of leg portions 10i are substantially parallel to each other as the cutter plate 30 and the forming plate 31 are lowered. The crown part 10h and the leg part 10i are formed by bending, and molding is completed. Further, the opening pressing member 34 is opened and the operation is finished.

<End of pressing and holding member operation>
When the operation handle 9 is pushed to the position shown in FIG. 58, the pusher 60 and the slide member 54 are continuously retracted. In the penetrating mechanism 2, as shown in FIG. 70, the second penetrating portion 21c of the punching blade 21 penetrates the binding paper P, and the staple 10 held inside the punching blade 21 starts penetrating the binding paper P. To do. The cutting / molding mechanism 3 is lowered to the lower end position shown in FIG. 82 and does not operate.

<Start of pushing member operation>
When the operation handle portion 9 is pushed to the position shown in FIG. 59, the pusher 60 and the slide member 54 continue to move backward and are guided by the guide surface of the guide portion 54b of the slide member 54, as shown in FIG. As shown, the pusher member 52 begins to close inward. In the penetrating mechanism 2, the staple 10 held inside the punching blade 21 penetrates the binding paper P by the second penetrating portion 21 c of the punching blade 21 penetrating the binding paper P. The cutting / molding mechanism 3 is lowered to the lower end position shown in FIG. 83 and does not operate.

<Start staple folding>
When the operation handle portion 9 is pushed to the position shown in FIG. 60, the pusher 60 and the slide member 54 are continuously retracted, and are guided by the guide surface of the guide portion 54b of the slide member 54 to be pushed out. Is closed inward and protrudes inward from the extrusion hole 21f of the punching blade 21 lowered to a predetermined position.

  In the penetrating mechanism 2, as shown in FIG. 72, the second penetrating portion 21c of the punching blade 21 penetrates the binding paper P, so that the staple 10 held inside the punching blade 21 penetrates the binding paper P. In conjunction with the operation, the pair of leg portions 10i of the staple 10 is bent inward by the pushing member 52 projecting inward from the pushing hole 21f. The cutting / molding mechanism 3 is lowered to the lower end position shown in FIG. 84 and does not operate.

<Staple pressing down landing>
When the operation handle portion 9 is pushed to the position shown in FIGS. 50 and 61, the pusher 60 and the slide member 54 are continuously retracted. In the penetration mechanism 2, the staple push-down unit 22 lands on the binding paper P as shown in FIG. 73.

  In the penetrating mechanism 2, when the operation handle portion 9 is pushed to the position shown in FIGS. 50 and 61, the penetrating mechanism main body portion 20 is lowered to the bending mechanism operating position M as shown in FIGS. 26, 27, and 73. As a result, regardless of the number of sheets of binding paper P, the crown portion 10 h of the staple 10 is pressed against the binding paper P by the staple push-down unit 22. The cutting / molding mechanism 3 is lowered to the lower end position shown in FIG. 85 and does not operate.

<Start clinch>
When the operation handle portion 9 is pushed to the position shown in FIG. 62, the pusher 60 and the slide member 54 are continuously retracted. In the bending mechanism 5, as shown in FIGS. 41 to 44, the push-up member 51 moves rearward as indicated by the arrow R <b> 1 by the force with which the operation handle portion 9 is pressed. As the push-down member 51 is retracted, the push-up member 51 starts to push up the first bending member 50R, the second bending member 50L, and the bonding member 50S. As shown in FIG. An operation referred to as clinch for bending the pair of leg portions 10i of the staple 10 folded to the right is started. The cutting / molding mechanism 3 is lowered to the lower end position shown in FIG. 86 and does not operate.

  The operation handle portion 9 is rotated about an imaginary fulcrum regulated by the locus of the cam groove 91 guided by the shaft 90 and the locus of the connecting shaft portion 20b, and the first bending member 50R, By starting to push up the second bending member 50L and the bonding member 50S, the operation load is reduced at the timing of bending the leg portion 10i of the staple 10.

<Right leg clinch>
When the operation handle portion 9 is pushed, the pusher 60 and the slide member 54 are continuously retracted. In the bending mechanism 5, as shown in FIGS. 41 (a), 42 (a), 45 (a) and 45 (b), the push-up member 51 is moved in the direction of arrow R1 by the force with which the operation handle 9 is pushed. When the first bending member 50R is pushed up by the push-up member 51 in the operation of moving backward, the right leg 10i of the staple 10 is bent.

  The leg portion 10 i of the staple 10 is bent inward by a predetermined amount by the pushing member 52. Further, when the first bending member 50R is rotated upward, the first bending member 50R is pushed up while being displaced outward, so that the first bending member 50R reliably enters the outside of the right leg portion 10i of the staple 10 and moves to the leg. The part 10i is bent.

<Left leg clinch>
When the operation handle portion 9 is pushed, the pusher 60 and the slide member 54 are continuously retracted. In the bending mechanism 5, as shown in FIGS. 42 (b), 43 (b), 45 (c) and 45 (d), the push-up member 51 is moved in the direction of arrow R1 by the force with which the operation handle 9 is pushed. When the second bending member 50L is pushed up by the push-up member 51 in the backward movement operation, the left leg 10i of the staple 10 is bent.

  Further, when the second bending member 50L rotates upward, the second bending member 50L is pushed up while being displaced outward, so that the second bending member 50L reliably enters the outer side of the left leg 10i of the staple 10 and moves to the leg. The part 10i is bent.

<End of clinch>
When the operation handle portion 9 is pushed to the position shown in FIGS. 51 and 63, the pusher 60 and the slide member 54 are continuously retracted. In the bending mechanism 5, as shown in FIGS. 43 (c), 44 (c), 45 (e) and 75, the push-up member 51 is retracted in the direction of the arrow R1 by the force by which the operation handle portion 9 is pushed. In operation, the bonding member 50S is pushed up by the push-up member 51, whereby the vicinity of the center of the pair of leg portions 10i on which the staples 10 are stacked is pushed. Thereby, as shown in FIG. 11, a pair of leg part 10i is bonded together by the adhesion part 10f, and clinch is complete | finished. The cutting / molding mechanism 3 is lowered to the lower end position shown in FIG. 87 and does not operate.

<Return operation start>
When the clinching is finished and the operation handle portion 9 is pushed up, the extraction blade guide 23 is urged by the spring 23a between the extraction blades 21 in conjunction with the advance of the slide member 54, and the extrusion member 52 is moved forward. Withdraw from the punching blade 21 to the outside. Further, the pusher 60 moves forward. In the operation in which the pusher 60 moves forward, as described above, the feed claw 61 engages with the linked staple 10a, and the forward conveyance of the linked staple 10a is started.

  In the penetrating mechanism 2, the punching blade 21 rises in the direction in which it is removed from the binding paper P. In the cutting / molding mechanism 3, the forming plate 31 rises integrally with the cutter plate 30 after the cutter plate 30 moves to the retreated position raised with respect to the forming plate 31 in conjunction with the operation of the penetrating mechanism 2. When the forming plate 31 is raised, the formed staple 10 starts to come out of the staple forming unit 33. In the bending mechanism 5, the push-up member 51 moves forward by the ascent of the penetrating mechanism 2, and the first bending member 50R, the second bending member 50L, and the bonding member 50S are lowered.

  Further, as the cutter plate 30 and the forming plate 31 are raised, the opening pressing member 34 comes into contact with the closing cam surface 84b formed on the main body 8 and starts to close inward.

<Return action>
When the operating handle 9 is pushed up, the pusher 60 continues to move forward. As for the slide member 54, the pin 54a leaves | separates from the long hole part 92b of the link 92, and advancement stops.

  In the penetrating mechanism 2, the punching blade 21 rises in the direction in which it is removed from the binding paper P. In the cutting / molding mechanism 3, the cutter plate 30 and the forming plate 31 are moved upward in conjunction with the operation of the penetrating mechanism 2, the opening pressing member 34 is closed, and the legs 10 i of the molded staple 10 are moved to the outside. Hold from and prevent it from opening.

  When the operation handle portion 9 returns to the standby position as shown in FIG. 52, the punching blade 21 is removed from the binding paper P in the penetration mechanism 2, and the bound binding paper can be taken out. Further, the pusher 60 advances, and the next staple 10 cut and molded by the cutting / molding mechanism 3 is conveyed to the penetration mechanism 2 and supported between the pair of punching blades 21, and the next. Is connected to the cutting / molding mechanism 3.

<Another configuration example of the stapler of this embodiment>
88 and 89 are perspective views showing other configuration examples of the stapler of the present embodiment. The stapler 1 includes a lid portion 85 on the bottom surface of the main body portion 8. The lid 85 is provided so as to be openable and closable by a rotating operation with a shaft (not shown) as a fulcrum with respect to the main body 8.

  The stapler 1 is configured such that the mechanism in the main body 8 is exposed by opening the lid 85. The stapler 1 of the present embodiment transmits the force of the operation handle portion 9 to the bending mechanism 5 using the driving force transmission means of the cam mechanism such as the clincher cam 57 and the clincher lever 58, and the first bending member 50R. The second bending member 50L and the bonding member 50S are operated.

  For this reason, the first bending member 50R, the second bending member 50L, the bonding member 50S, the push-up member 51, the clincher cam 57, and the clincher lever 58 provided on the lower side of the paper placing table 80 are separated and engaged. Possible configurations can be obtained.

  Therefore, in this example, in the bending mechanism 5, the first bending member 50 </ b> R, the second bending member 50 </ b> L, the bonding member 50 </ b> S, and the push-up member 51 are attached to the lid 85. A clincher lever 58 that transmits driving force to the push-up member 51 and a clincher cam 57 shown in FIG. 49 are attached to the main body 8 side.

  The push-up member 51 and the clincher lever 58 are separated by opening and closing the lid portion 85. When the lid portion 85 is closed, the engaging portion 58b of the clincher lever 58 is engaged with the push-up member 51 and the lid portion 85 is opened. It is configured to be out of sync. Thereby, the presence / absence of engagement between the push-up member 51 and the clincher lever 58 is switched by the operation of opening and closing the lid portion 85.

  The stapler 1 opens the lid 85 to expose the first bending member 50R, the second bending member 50L, the bonding member 50S, and the push-up member 51, and the staple 10 is jammed. It can be easily removed. Further, the staple 10 is provided with an adhesive portion 10f for bonding the leg portions 10i to each other, and an adhesive component may adhere to a member or the like constituting the bending mechanism 5, but the lid portion 85 is opened. Thus, by exposing the first bending member 50R, the second bending member 50L, and the bonding member 50S, the attached adhesive component can be easily removed. Further, paper dust or the like generated by the binding blade 21 passing through the binding paper P can be removed from the main body 8 by opening the lid 85.

  Further, the stapler 1 includes a storage portion 86 on the bottom surface of the main body portion 8. The storage unit 86 is configured by providing a space that is opened and closed by the lid unit 85, and for example, tweezers are stored therein. Thereby, when the staple 10 is jammed, it can be removed using tweezers.

  The present invention is applied to a stapler that is operated by a human force or a driving force such as a motor, and binds a binding object with a staple made of a non-metallic material such as paper.

  DESCRIPTION OF SYMBOLS 1 ... Staple, 10 ... Staple, 10a ... Connection staple, 10b ... Tip part, 10c ... Connection part, 10d ... Hole part, 10e ... Slit part, 10f ... · Adhesive part, 10g ... covering part, 10h ... crown part, 10i ... leg part, 11 ... staple cartridge, 2 ... penetrating mechanism, 20 ... penetrating mechanism main body part, 20b ..Connecting shaft part, 21... Punching blade, 21a... Blade part, 22 .. staple pressing part, 3 .cutting / molding mechanism, 4. Mechanism: 50R: First bending member, 50L: Second bending member, 50S: Bonding member, 50a: Shaft, 51: Push-up member, 51a: Shaft, 52 ... Extruding members, 53 ... Extruding members Moving mechanism, 54 ... slide member, 500R, 500L, 500S ... cam groove, 6 ... transport mechanism, 7A ... detaching mechanism, 8 ... main body, 80 ... paper mounting table, 9: Operation handle, 90 ... Shaft, 91 ... Cam groove

Claims (4)

A pair of punching blades facing each other at intervals corresponding to the length of the crown portion of a staple made of a non-metallic material made of a soft material and having a hole portion in the binding target object by inserting and extracting the pair of punching blades into the binding target object And a penetrating means for penetrating a pair of leg portions of the staple through the binding object;
Bending means for bending a pair of the leg portions of the staple penetrated by the binding object by the penetration means;
An operation member for causing the binding object to pass through the pair of leg portions of the staple by the penetrating means and bending the pair of leg portions of the staple penetrated by the binding object by the bending means;
The operation member includes a cam groove guided by a shaft provided in a main body portion of the stapler,
The cam groove is set to a shape in which the operation load of the operation member becomes lighter as the operation member is operated , and the shape of the cam groove allows the operation member to receive a force and to rotate the operation member. length to the fulcrum shaft, and the length of a member which applies a force to said pivot axis, is varied by moving the fulcrum shaft due to operation of the operation member, changes the load weight applied to the operating member A stapler characterized by 2. The stapler according to claim 1, wherein the cam groove includes a guide groove portion that is guided by the shaft at a timing at which the staple starts to penetrate the binding target object by the operation of the penetrating unit . 2. The stapler according to claim 1 , wherein the cam groove includes a guide groove portion guided by the shaft at a timing when the staple penetrates the binding target object by the operation of the penetrating unit . The stapler according to claim 1 , wherein the cam groove includes a guide groove portion guided by the shaft at a timing when the staple is bent by an operation of the bending unit .

Images