JP3185421U - Stapler - Google Patents

Abstract

A stapler is provided that can drive staples through a plurality of pieces for binding together a plurality of pieces of sheet-like material.
A stapler head having a drive portion, an intermediate magazine for supporting staples each having two legs, a base portion for supporting two anvils, a cam, and an eccentrically mounted wheel. The stapler head 12, the intermediate magazine 14 and the base portion 16 are relatively movable, and the eccentrically mounted wheel causes the stapler head 12 and the intermediate magazine 14 to be relative to each other. The drive unit of the stapler head 12 drives the staple to move away from the magazine 14.
[Selection] Figure 1

Description

  The present invention relates to a stapler capable of driving staples (spelling needles) to penetrate a plurality of pieces of sheet-like material (eg, paper) together.

  Many existing staplers include a stapler head, an intermediate magazine for supporting staples, and a base, which are pivotally connected to each other and movable relative to each other. In many such conventional staplers, in use, staples supported by the magazine are driven by a drive located at or near the free longitudinal end of the stapler head, thereby allowing the two staples of the staple to be Parallel and spaced legs are extruded through a piece of sheet-like material (eg, paper). During operation of the stapler, the two legs of the staple are brought closer to each other by the anvil supported by the base and to the crown of the staple connecting the two legs. So that it is bent. Because the staple legs are bent while being driven through the piece of sheet material, the staple legs will be bent after being bent, which is not satisfactory and safe. not.

  Accordingly, staplers have been developed that drive the staples through the pieces of sheet-like material and that the legs of the staples are straight after being bent. Such conventional staplers (also known as “clinch staplers”) typically employ a two-step process. In the first step of the binding process, the staples are driven away from the magazine by the drive of the stapler head so that the staple legs are driven through the piece of sheet material. In the second step of the spelling process, the stapler head actuates an actuator that retracts the plate supported by the base to reveal space, which allows the stapler head drive to quickly move the legs. Allows the staples to be driven closer to the anvil supported by the base portion to bend, thereby providing two straight bent legs that abut the lower surface of the piece of sheet material . It is best to synchronize the actuation movement of the stapler head during the time that the staple legs are driven sufficiently to penetrate the sheet of sheet-like material in order to obtain a good straight bending effect at the staple legs. It is. Such naturally requires precise machining of the various components of the stapler. It can also be seen that in practice it is very difficult to machine the plate supported by the base to the appropriate dimensions to achieve the desired movement. Further, the two steps of the spelling process are discontinuous and are not preferable for the user.

  Accordingly, it is an object of the present invention to provide a stapler that alleviates the aforementioned drawbacks, or at least to provide a convenient alternative to the industry and the public.

  According to the first aspect of the present invention, a stapler head having a driving portion, a magazine adapted to support at least one staple having two legs, and a base portion supporting at least two anvil members. And the at least one actuator, wherein the stapler head, the magazine, and the base portion are movable relative to each other, and the actuator moves the stapler head and the magazine relative to each other and the base. Is movable from a first position to a second position so as to be moved relative to the section, whereby the drive unit of the stapler head drives the staples away from the magazine, and An actuator moves the anvil member to bend the leg of the staple. Moveable from the second position to the third position to move the motion transmission assembly accordingly, and the actuator is movable from the first position to the second position by rotation, and the first position by rotation. A stapler is provided, wherein the stapler is movable from a second position to the third position, and the actuator is rotatable about an axis fixed to the stapler head.

  According to the second aspect of the present invention, a stapler head having a driving portion, a magazine adapted to support at least one staple having two legs, and a base portion supporting at least two anvil members. And the at least one actuator, wherein the stapler head, the magazine, and the base portion are movable relative to each other, and the actuator moves the stapler head and the magazine relative to each other and the base. Is movable from a first position to a second position so as to be moved relative to the section, whereby the drive unit of the stapler head drives the staples away from the magazine, and An actuator moves the anvil member to bend the leg of the staple. The movement transmitting assembly is movable from the second position to the third position to move the movement transmitting assembly, and the movement transmitting assembly is rotatable relative to each other, the first part, the second part, and the third part. A stapler is provided that includes a portion.

  Preferred embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

FIG. 1 is a top perspective view of an electrical stapler according to a preferred embodiment of the present invention with the outer casing removed for clarity. FIG. 2 is a side view of the stapler of FIG. 1 with the base portion and motion transmission assembly removed. FIG. 3 is a top perspective view of the stapler of FIG. 2 with the motor, gear chain, and cam removed. 4 is a top perspective view of the motion transmission assembly of the stapler of FIG. 5 is a top perspective view of the motor and gear chain of the stapler of FIG. 6A is a side view of the stapler of FIG. 1 in a first arrangement. 6B is a front view of the stapler of FIG. 6A. FIG. 7A is a side view of the stapler of FIG. 6A in the second arrangement. FIG. 7B is a front view of the stapler of FIG. 7A. FIG. 8A is a side view of the stapler of FIG. 7A in a third arrangement. FIG. 8B is a front view of the stapler of FIG. 8A. FIG. 9A is a side view of the stapler of FIG. 8A in a fourth arrangement. FIG. 9B is a front view of the stapler of FIG. 9A. FIG. 10A is a side view of the stapler of FIG. 9A in a fifth arrangement. FIG. 10B is a front view of the stapler of FIG. 10A. FIG. 11A is a schematic view of a conventional stapler when a leg portion of a staple is bent. FIG. 11B is a power diagram of a conventional stapler in the arrangement shown in FIG. 11A. FIG. 12A is a schematic view of a conventional clinch stapler when a leg portion of a staple is bent. FIG. 12B is a power diagram of a conventional clinch stapler in the arrangement shown in FIG. 12A. FIG. 13A is a schematic view of the stapler of the present invention when the staple leg is bent. FIG. 13B is a schematic view of the inventive stapler after bending the staple legs. FIG. 13C is a power diagram of the stapler of the present invention in the arrangement shown in FIG. 13A.

  An electrical stapler according to a preferred embodiment of the present invention is shown in FIG. 1 and generally indicated at 10 with the outer casing removed for clarity. The stapler 10 includes a stapler head 12, an intermediate staple magazine 14, and a base portion 16, which are rotatably connected to each other around a pin 18 adjacent to the rear end portion 20 of the stapler 10. Thus, the stapler head 12, the magazine 14, and the base portion 16 can be rotated relative to each other.

  The stapler 10 is operated by an electric motor 20 (which can be powered by a battery and / or an alternating municipal power), and the output of the electric motor 20 is driven by a gear chain 22, each cam surface 24 a. Are transmitted to two cams 24 (only one of which is shown in FIG. 1), so that when the motor 20 operates, the cams 24 move about a shaft 26 fixed to the stapler head 12. , Rotated in the direction indicated by arrow A in FIG. It can also be understood from FIGS. 2 and 3 that the staple driving unit 28 is provided at the free front end of the stapler head 12.

  As shown in FIG. 1, the motion transmission assembly 30 is pivotally attached to the base portion 16 so as to pass through a shaft 32 fixed to the base portion 16. The base part 16 can be rotated and moved relatively.

  As shown in FIG. 4, the motion transmission assembly 30 is directed toward the stapler head 12, is pivotally engaged with the shaft 36 and is relatively movable with respect to the shaft 36. The shaft 36 is fixedly engaged with one end of a frame 38, and the frame 38 also supports the shaft 32. The multi-end portion of the frame 38 is rotatably engaged with a platelet 40 and is relatively movable with respect to the platelet 40. Platelet 40 is slidable on the outer major surface of plate 42 in which two staple bending anvils 44 are pivotally engaged for relative rotational movement. The plate 42 is supported by the base portion 16. A spring 46 is also provided to bias the motion transmission assembly 30 to a stable position.

  FIG. 5 shows the connection between the motor 20 and the gear chain 22 in more detail. It can be seen that the output spindle 48 of the motor 20 meshes with the gear chain 22 to drive the end gear 50. The shaft 26 is fixed so as to pass through the central axis of the gear 50, and the cam 24 is fixedly engaged with each end portion of the shaft 26 for simultaneous rotation operation. Two wheels 52 are also eccentrically and fixedly attached to the shaft 26 for simultaneous rotational movement.

  6A and 6B show the stapler 10 in the initial motion arrangement. In this arrangement, the cam 24 is located at the initial position of the cam 24, the leg 34 is located above the leg 34, and the platelet 40 is located below the platelet 40. The anvil 44 is also located below the anvil 44.

  When the motor 20 is operated, the motor 20 moves the cam 24 together with the shaft 26 around the shaft 26 in the direction indicated by the arrow A in FIG. Drive to rotate. During this rotational movement, the eccentrically mounted wheel 52 is also rotated about the axis 26. The rotational movement of the wheel 52 causes the stapler head 12 to move around the pin 18 in the direction indicated by arrow B in FIG. 6A relative to the magazine 14 and relative to the base portion 16. Rotate. Accordingly, the driving unit 28 of the stapler head 12 is moved into the magazine 14 so as to drive the staples of the staple stack supported by the magazine 14 away from the magazine 14. In order to drive the staples generally away from the magazine 14, the magazine 14 is also moved around the pin 18 by movement of the drive 28 until the stapler 10 is in the arrangement shown in FIGS. 7A and 7B. It is rotated relative to the base portion 16 in the direction indicated by the arrow B.

  It is understood that when the stapler 10 is in the arrangement shown in FIGS. 7A and 7B, the cam 24 is rotated at an angle and the stapler head 12 and the magazine 14 are rotated to approach the base portion 16. obtain. In this arrangement, the two legs of the staple driven by the drive 28 of the stapler head 12 are fully punched through the piece of sheet-like material to be bound. The two legs of the staple are parallel and spaced apart from each other and are generally perpendicular to the crown connecting the two staple legs.

  After further movement of the motor 20 and thereby rotation of the cam 24 in the same direction, the cam surface 24a of the cam 24 is placed on the leg 34 supported by the frame 38, as shown in FIGS. 8A and 8B. Works. This moves the leg 34 from the position above the leg 34 to the position below the leg 34. During this movement, due to the link between the leg 34 and the platelet 40, the platelet 40 is moved from the lower position of the platelet 40 (as shown in FIGS. 8A and 8B). 40 is moved relative to the outer main surface along the outer main surface of the plate 42 at a position above 40. This means that the leg 34 and the platelet 40 move in different directions.

  When the platelet 40 is moved to a position above the platelet 40, the platelet 40 is oriented so that the two staple legs are directed closer to each other, as more clearly shown in FIG. 8B. The two anvils 44 are connected to the stapler head 12, the intermediate magazine 14, and the staples to bend the two staple legs closer to each other until they generally lie on a common plane so as to face the lower surface of the piece of sheet-like material. To move upward so as to approach While the two staple legs are bent by the anvil 44, the wheel 52 is adapted to keep the stapler head 12 (and the drive 28) stationary relative to the magazine 14 and the base 16. It acts on the stapler head 12. This results in a better straight bending effect.

  As cam 24 is further rotated in the same direction indicated by arrow A in FIG. 2 to the position shown in FIGS. 9A and 9B, cam surface 24a is just out of contact with leg 34. The leg 34 remains at a position below the leg 34, the platelet 40 remains at an upper position of the platelet 40, and the anvil 44 remains at an upper position where the anvil 44 is rotated.

  As shown in FIGS. 10A and 10B, when the cam 24 is further rotated in the same direction indicated by arrow A in FIG. 2, the spring 46 causes the motion transmitting assembly 30 and the leg 34 to move to the leg 34. And the platelet 40 is returned to the stable position located below the platelet 40. During this return movement of the motion transmitting member 30, the legs 34 move upward and the platelets 40 move downward. Accordingly, the staple bending anvil 44 can be rotated so as to return to a position below the anvil 44 by its own weight. The eccentrically mounted wheel 52 also moves the magazine 14 and the stapler head 12 away from the base 16 and back to their respective upper initial positions away from each other. When the stapler head 12 reaches the upper initial position of the stapler head 12, the stapler head 12 operates the switch 54 so as to stop the rotation of the motor 20, and at that time, the stapler 10 performs the next spelling operation. Be prepared for.

  From the initial position as shown in FIGS. 6A and 6B, through the positions of FIGS. 7A and 7B, 8A and 8B, 9A and 9B, and finally as shown in FIGS. 10A and 10B It can be understood from the above that the rotation of the cam 24 to return to the initial position is smooth and continuous. This also means that the action of bending the legs of the staples drives the staples through the pieces of sheet-like material to be bound, smoothly and continuously, without sudden intermediate transitions. , Means what happens next.

  As shown in FIGS. 11A and 11B, the horizontal force required to bend the staple legs when the conventional stapler base just contacts the staple legs is f. As shown in FIGS. 12A and 12B, the horizontal force required to bend the staple legs when the base of a conventional clinch stapler just contacts the staple legs is also f. However, since the clinch stapler requires that the staple legs be straight after being bent, the contact angle α2 at the base portion of the clinch stapler is the contact angle at the base portion of the conventional stapler. It is larger than the angle α1.

  The force F1 that is applied to the staple and is required to bend the leg of the staple by the conventional stapler is f · tan α1. The force F2 that is applied to the staple and is required to bend the leg of the staple by the conventional clinch stapler is f · tan α2. Since α2> α1 and both α1 and α2 are smaller than 90 °, F2> F1.

  Turning now to FIGS. 13A-13c, when the anvil 44 of the stapler 10 according to the present invention is positioned below the anvil 44 (as shown in FIG. 13A), the angle α3 is both α1 and α2. Smaller than. The force F3 exerted on the staple and required to bend the leg of the staple by the stapler 10 according to the present invention is f · tan α3. Since α2> α1> α3, F2> F1> F3. This means that the force F3 required for the user to operate the stapler 10 is the smallest compared to the force required to operate the conventional stapler and the clinch stapler.

  Also, when the anvil 44 of the stapler 10 according to the present invention is in the upper position (as shown in FIG. 13B), the upper surface of the anvil 44 acting on the staple legs is substantially horizontal. ) ". This ensures that the staple legs are very straight after being bent.

  As explained above, conventional clinch staplers are driven to penetrate a piece of sheet-like material when the plate supported by the base is retracted to reveal space during the spelling operation. The staple being driven is further driven by the stapler head drive to approach the anvil that is supported and secured to the base by which the staple legs move quickly. Bend in In fact, it can be seen that the quality of straight bending of the staple legs by such a conventional clinch stapler is not stable. It should be noted that the staples may not be securely engaged with the staple magazine, especially if the stack of pieces of sheet-like material being driven through the staples is thin. Furthermore, driving the staples closer to the base by the stapler head can move the staples (particularly their legs) in an undesirable manner or direction, thereby adversely affecting the straight bending effect.

  On the other hand, in the stapler 10 of the present embodiment, the stapler head 12, the magazine 14, the base portion 16, and the bending portion of the staples that are driven so as to penetrate the stack of pieces of sheet-like material are bent and just before the bending. Are fixed relative to each other and remain stationary, only the anvils 44 are pivoted toward and toward the staple legs to bend the staple legs. The It can be seen that such provides a more reliable and consistent straight bending effect.

  It is to be understood that the foregoing is only illustrative of one example in which the present invention may be implemented, and that various improvements and / or modifications may be made without departing from the spirit of the present invention. It should also be understood that the various features of the invention described herein in the context of one embodiment for the sake of brevity may be provided separately or in any appropriate sub-combination.

Claims (11)

A stapler head having a drive unit;
A magazine adapted to support at least one staple having two legs;
A base portion supporting at least two anvil members;
At least one actuator;
With
The stapler head, the magazine, and the base portion are movable relative to each other.
The actuator is movable from a first position to a second position so as to move the stapler head and the magazine relative to each other and relative to the base portion, whereby the stapler head The driving unit drives the staple to move away from the magazine,
The actuator is moveable from the second position to a third position to move a motion transmitting assembly to move the anvil member to bend the legs of the staple;
The actuator is movable from the first position to the second position by rotation, and is movable from the second position to the third position by rotation;
The stapler, wherein the actuator is rotatable around an axis fixed with respect to the stapler head. The stapler according to claim 1, wherein the actuator includes at least one cam member and / or at least one wheel member. The stapler according to claim 1, wherein the actuator is movable from the third position to a fourth position so as to move the stapler head and the magazine away from the base portion. The stapler according to claim 1, wherein the stapler is electrically operated. A stapler head having a drive unit;
A magazine adapted to support at least one staple having two legs;
A base portion supporting at least two anvil members;
At least one actuator;
With
The stapler head, the magazine, and the base portion are movable relative to each other.
The actuator is movable from a first position to a second position so as to move the stapler head and the magazine relative to each other and relative to the base portion, whereby the stapler head The driving unit drives the staple to move away from the magazine,
The actuator is moveable from the second position to a third position to move a motion transmitting assembly to move the anvil member to bend the legs of the staple;
The stapler according to claim 1, wherein the motion transmission assembly includes a first portion, a second portion, and a third portion that are rotatable relative to each other. The stapler according to claim 5, wherein the second portion of the motion transmission assembly is rotatable about an axis fixed to the base portion. While the actuator moves from the second position to the third position, the first portion of the motion transmission assembly moves in a first direction, and the third portion of the motion transmission assembly includes the first portion. The stapler according to claim 5, wherein the stapler moves in a second direction substantially opposite to the one direction. The stapler according to claim 7, wherein movement of the third portion of the motion transmitting assembly in the second direction moves the anvil member to bend the leg of the staple. The stapler according to claim 5, wherein the stapler is electrically operated. The stapler according to claim 5, wherein the actuator is movable from the third position to a fourth position so as to move the stapler head and the magazine away from the base portion. A spring member is provided for moving the motion transmission assembly while the stapler head and the magazine move away from the base portion. The stapler according to claim 10, wherein one portion moves in the second direction and the third portion of the motion transmission assembly moves in the first direction.