JP2008507420A - Spring operated stapler - Google Patents

Abstract

  The stapler includes a strike plate (123) that distributes the staples (126) one by one when activated by the striker spring (120), and an activation mechanism that activates the striker spring (120). In one embodiment, the activation mechanism engages the striker spring (120) to lift the strike plate (123) and disengages from the strike plate (123) when actuated by the release rod (132). ) Is provided.

Description

[Technical field]
The present invention relates to a stapler, and more particularly to a spring-operated stapler having a simplified activation mechanism.

[Background technology]
In a spring operated stapler, the striking plate can move back and forth between an initial position and a fire position. When the strike plate moves from the initial position to the firing position, the striker spring that engages the opening of the strike plate is deformed and energized. When the strike plate reaches the firing position, in the process of driving the strike plate to its initial position and distributing the foremost staple of the staple stick contained in the staple magazine to the workpiece, the striker spring is released and its initial shape is released. Return to. When a force is applied to the staple cover plate during staple operation, the strike plate is moved from the initial position to the firing position by direct engagement with the strike plate or by engagement with a striker spring (which may be a leaf spring). An actuating lever is provided for pulling. When the strike plate reaches the firing position, the operating lever is released from the strike plate or the striker spring, and the strike plate is returned from the firing position to the initial position by the striker spring. There are many spring actuation mechanisms for performing the above operations, but there is still a focus on designing better ones with improved simplicity, accuracy, and certainty.

[Disclosure of the Invention]
The present invention relates to a stapler having a novel spring actuation mechanism.

  According to the first aspect of the present invention, by applying a load to the spring using a lever that extends substantially the entire length of the stapler, even if the pressure applied by the user is relatively small, a relatively large load force is generated by the lever action. Given.

  In an exemplary embodiment, the stapler of the present invention comprises a base member and a magazine member that houses a set of staples or staple sticks, each of the base member and the magazine member having a first end. And the base member and the magazine member are pivotally connected to each other at their respective first ends. Furthermore, the stapler of the present invention includes a striking plate that distributes staples one by one when actuated by a striker spring, and a triggering mechanism that activates the operation of the striker spring.

  More specifically, as taught by the present invention, the activation mechanism activates the operation of the striker spring when the second end of the base member and the second end of the magazine member move toward each other. An activation lever is provided between the base member and the magazine member. By providing an activation lever between the base member and the magazine member, the stapler design is simplified and the number of parts utilized is much smaller.

  Preferably, the activation lever is made of an elastic material and has a lower end fixed to the upper surface of the base member and an upper end freely abutting the lower surface of the magazine member, so that the activation lever is at a distance suitable for receiving the workpiece. The second end of the base member and the second end of the magazine member that are separated from each other are always biased. Thus, the stapler of the present invention may not require an additional raiser element to maintain the distance between the base member and the magazine member.

  Preferably, the striker spring has a first end that engages an opening formed in the striking plate to move the striking plate between a first position and a second position, and the activation lever is a staple. The striker spring moves the strike plate from the first position to the second position by engaging the striker spring and deforming the striker spring during the operation of. The need for direct engagement between the activation lever and the striking plate simplifies the stapler design.

  Preferably, when the strike plate reaches the second position, disengagement between the activation lever and the striker spring causes the striker spring to return to its initial shape, thereby dispensing the foremost staple of the staples. For this purpose, a release mechanism is provided to strongly return the striking plate to the first position.

  Alternatively, as in the prior art, the activation lever may engage directly with the striking plate instead of the striker spring. However, prior art cover plates may be omitted from the teachings of the present invention.

  According to the second aspect of the present invention, a stapler having a novel leaf spring operating mechanism is provided. In accordance with the teachings of the present invention, the stapler includes a strike plate that dispenses staples from the magazine member, a leaf spring that engages the strike plate to drive the strike plate, and a leaf spring from a first position to a second position. An actuating bar that lifts the striking plate from the initial position to the released position by releasing the leaf spring from the actuating bar and driving the striking plate strongly toward the initial position by lifting the striking plate to the initial position.

  In a preferred embodiment, the actuating bar comprises a laterally projecting lug adapted to push up a tab provided on the leaf spring so as to lift the leaf spring when an external force is applied to the actuating rod.

  Preferably, the tab disengages from the lug when the leaf spring reaches a second position where the striking plate is lifted to the release position.

  Preferably, the actuating rod has a forward end that is movable along a guiding ramp when an external force is applied to the actuating rod, thereby ensuring engagement between the actuating rod lug and the leaf spring tab. And improve accuracy.

  Preferably, the engagement between the tab and the lug is such that when the front end of the actuating bar moves along the guide ramp, the tab slides over the surface of the lug toward the edge of the lug and the leaf spring is second It is like releasing the leaf spring from the actuating rod by the tab falling from the edge of the lug when it reaches the position.

  The above and other features and advantages of the present invention will become more apparent by reading the detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.

[Best Mode for Carrying Out the Invention]
As shown in FIG. 1, a stapler 100 according to a first embodiment of the present invention generally includes a base 101, a body 102 having a front end 102b and a rear end 102a, and a cover plate 103 having a front end 103b and a rear end 103a. And. The body 102, which basically comprises a staple magazine 125 (most apparent in FIGS. 3a and 3b) containing a set of staples or staple sticks 126, is fixed to a pair of base 101 near the rear end 101a of the top surface 111. It is pivotally connected to an upright bracket plate 104. Similarly, the cover plate 103 is also pivotally connected to the bracket plate 104. A suitable mechanism (not shown) is also provided to prevent the cover plate 103 and the main body 102 from unintentionally rotating away from the base 101 unless the user applies an appropriate force.

  As shown in FIG. 2, a striking plate 123 is conventionally provided in front of the staple magazine 125 to distribute the staples one by one from the staple stick 126 accommodated in the staple magazine 125 during the staple operation. ing. When the striker spring 120 is activated during each staple operation, the striking plate 123 reciprocates vertically between an initial position as shown in FIG. 3a and a firing position or a release position as shown in FIG. 3b. can do.

  According to an exemplary embodiment of the present invention, the activation lever 110 is provided between the base 101 and the main body 102 and forwards from the upper surface 111 of the base 101 to the lower surface 129 of the main body 102 (ie, the front end 101b, 102b). The lower end 10 a is preferably fixed to the upper surface 111 of the base 101, but the upper end 110 b freely contacts the lower surface 129 of the main body 102. Therefore, when the front end 101b of the base 101 and the front end 102b of the main body are brought close to each other, the activation lever 110 is inclined so as to slide along the lower surface 129 toward the front ends 101b and 102b.

  Preferably, the activation lever 110 is made of an elastic material, and therefore, the base 101 has an appropriate distance as shown in FIG. 2 to receive a workpiece 140 such as a bundle of paper between the base 101 and the body 102. Also serves as a lifting element that always separates the main body 102 from each other.

  The striker spring 120 is attached to the horizontal shaft 141. One end 120a of the striker spring 120 is fixed by a stop plate 124 attached to the main body 102, and the other end 120c of the striker spring 120 is engaged with an opening formed in the strike plate 123 (see FIGS. 3a and 3b more clearly). Shown in). As will be described in more detail later, the middle portion or the engagement portion 120b of the striker spring 120 engages with the upper end 110b of the activation lever 110 when the main body 102 and the base 101 are brought close to each other. The forward movement of 110a deforms the striker spring 120 and rotates it in the clockwise direction, and the other end 120c moves upward, thereby moving the striking plate 123 from the initial position to the firing position.

  As shown in FIG. 3 a, prior to the staple operation, the striking plate 123 is in its initial position, closing the distribution gap 128. The staple stick 126 is biased toward the striking plate 123 by a bias spring 127, and the foremost staple 126 a is pressed against the striking plate 123. At this time, the release rod 132 extending from the cover plate 103 is not in contact with the activation lever 110.

  During the stapler operation, pressure is applied to the cover plate 103 to move the main body 102 toward the base 101. The upper end 110b of the start lever 110 that engages with the engaging portion 120b of the striker spring 120 slides forward along the lower surface 129, pushes the striker spring 120 to deform, and rotates clockwise about the horizontal shaft 141. . The free end 120c is moved upward to lift the striking plate 123 to the firing position as shown in FIG. 3b. At the same time, energy is accumulated in the deformed striker spring 120. Under the biasing force of the bias spring 127, the staple stick 126 is pushed forward, and the foremost staple 126a enters the distribution gap 128 remaining as the striking plate 123 is lifted.

  When the striking plate 123 reaches the firing position as shown in FIG. 3b, the upper end 110b remains engaged with the engaging portion 120b. However, at this point, as will be described in more detail later, the release bar 132 has reached the activation lever 110 because the stop 131 has slid down the slope 122 and moved the release bar 132 downward. Therefore, when the cover plate 103 is further pressed, the release rod 132 pushes down the start lever 110 and is separated from the engagement portion 120b of the striker spring 120, whereby the striker spring 120 is released and returns to its initial shape. Thus, the energy released from the striker spring 120 causes the striker spring 120 to strongly return the strike plate 123 to its initial position as shown in FIG. 3a, so that the strike plate 123 is in the foremost position in the distribution gap 128. The staple 126a is driven into the workpiece 140. Since the staple recess 111a having an appropriate shape is provided on the upper surface 111, the foremost staple 126a is bent and fastened to the workpiece 140 as in the conventional art. The striking plate 123 returns to its initial position and closes the dispensing gap 128, as shown in FIG. 3a, in preparation for the next staple operation.

  To facilitate the return of the activation lever 110 after the striker spring 120 has returned to its initial shape, the engagement portion 120b of the striker spring 120 slides with the upper end 110b of the activation lever 110 beyond the engagement portion 120b. In order to easily return to the initial position, it is preferable to have a generally rounded front portion. However, the rear portion is preferably flat or slightly recessed to provide a firm engagement with the upper end 110b of the activation lever 110 before the striking plate reaches the firing position.

  Preferably, the release bar 132 has a sloped lower edge 132a to provide better contact with the activation lever 110.

  As described above, prior to the staple operation, the release rod 132 is not in contact with the activation lever 120, as shown in FIG. 3a. This is realized by a gap provided between the lower surface 103 d of the cover plate 103 and the upper surface 121 of the main body 102. More specifically, the stop 131 is provided so as to hang from the vicinity of the front end 103b of the lower surface 103d of the cover plate 103, and is placed on the edge portion 121a of the upper surface 121 near the front end 102b. Preferably, the edge portion 121b is formed with a slope 122 inclined forward. The edge portion 121b may be a different material from the top surface 121 (as shown) or simply a part of the top surface.

  During the stapler operation, the cover plate 103 moves relative to the main body 102 and the stop 131 moves away from the edge portion 121a, thereby narrowing the gap between the lower surface 103d of the cover plate 103 and the upper surface 121 of the main body 102. Then, the release rod 132 is moved downward relative to the main body 102 so as to push the start lever 110. The relative movement between the cover plate 103 and the main body 102 will be described in more detail below.

  2 and 4, the cover plate 103 is pivotally connected to a bracket plate 104 (fixed to the base 101) at a pivot point 103c, while the body 102 is pivoted at a pivot point 102c. The bracket plate 104 is pivotally connected. As shown in FIG. 5, when both the cover plate 103 and the main body 102 rotate around the respective turning points 103c and 102c, the rotation radius R1 of the stop 131 is larger than the rotation radius R2 of the edge portion 121a. Next, when the cover plate 103 and the main body 102 rotate together, the stop portion 131 gradually slides along the slope 122 and finally leaves the edge portion 121a, so that the lower surface 103d of the cover plate 103 and the main body The gap with the upper surface 121 of 102 is narrowed.

  FIG. 5 shows a second embodiment similar to that shown in FIGS. 3a and 3b. In this embodiment, the cover plate 103 is separated from the upper surface 121 by the compression spring 133. Before the striking plate 123 reaches its firing position (as shown in FIG. 3b) during the staple operation, the compression spring 133 is strong enough to keep the cover plate 103 away from the body 102. When the strike plate 123 reaches its firing position, the activation lever 110 remains engaged with the engagement portion 120b of the striker spring 120 and the body 102 continues to move downward until it rests on the workpiece 140. Subsequently, when further pressure is applied to the cover plate 103, the force of the compression spring 133 is overcome, and the cover plate 103 is moved downward relative to the main body 102, so that the release rod 132 is activated by pushing the activation lever 110. The lever 110 is released from the engagement with the engagement portion 120b of the striker spring 120. It is contemplated that in this embodiment, the pivot point 103c of the cover plate 103 and the pivot point 102c (FIG. 2) of the body 102 may be the same or close to each other.

  6a, 6b, and 6c show a third embodiment similar to FIGS. 1-5. In this embodiment, the starting lever 110 is formed with a square opening 110c in the vicinity of the upper end 110b. FIG. 6a shows a state before the stapler operation. FIG. 6 b shows that the striking plate 123 reaches the firing position during the staple operation, at which time the engaging portion 120 b of the striker spring 120 reaches the edge of the opening 110 c of the activation lever 110. When the main body 102 is further pushed toward the base 101, the engaging portion 120b of the striker spring 120 springs back into the opening 110c of the activation lever 110, as shown in FIG. Release the power applied to the. The striker spring 120 returns to its initial shape while keeping the engagement portion 120 in the opening 110c and operates the striking plate 123 to dispense the staple 126b. After the staple operation, the user may help lift the body 102 from the base 101 to disengage the engaging portion 120b of the striker spring 102 from the opening 110c, and thus the activation lever 110 may return to its initial position. it can. In this embodiment, the cover plate 103 and the release rod 132 are not necessary, and a force can be directly applied to the upper surface 121 of the main body 102 for the stapler operation.

  FIG. 7 shows a fourth embodiment according to the present invention. Unlike the previous embodiment in which the activation lever 110 moves the striking plate 123 via the striker spring 120, in this embodiment, the activation lever 110 does not engage the striker spring 120 directly but rotates about the horizontal shaft 151. The striking plate 123 is actuated by means of an L-shaped transmission element 150 that is mounted as possible. The upper end 110 b of the activation lever 110 contacts the lower end 150 b of the transmission element 150, while the upper end 150 a of the transmission element 150 engages with the opening of the striking plate 123. By means of a suitable return spring mechanism (not shown), the transmission element 150 is biased to the position as shown in FIG. 7, where the triking plate 123 is in its initial position and the upper end 150a is the opening of the striking plate 123. Engage.

  Similar to the previous embodiment, the striker spring 120 is mounted on the horizontal shaft 141. One end 120 a of the striker spring 120 is held by the stop plate 124, while the other end 120 c is engaged with an aperture formed in the strike plate 123.

  Prior to the staple operation, as shown in FIG. 8 a, the striking plate 123 is in its initial position, closing the distribution gap 128. The staple stick 126 in the staple magazine 125 is biased forward by a bias spring 127, and the foremost staple 126 a is pressed against the striking plate 123.

  Similar to the previous embodiment, the activation lever 110 is preferably made of an elastic material and serves as a lifting element that keeps the body 102 and the base 101 away from each other by a distance suitable for receiving the workpiece 140. Fulfill. Prior to the staple operation, the upper end 110b abuts the lower end 150b of the transmission element 150, while the upper end 150a of the transmission element 150 opens the opening of the striking plate 123 under the deflection force of a return spring mechanism (not shown). Is engaged.

  During the stapler operation, pressure is applied to the cover or top surface 121 of the main body 102 so as to move the main body 102 toward the base 101. The upper end 110b of the start lever 110 moves forward and rotates the L-shaped transmission element 150 clockwise about the horizontal axis 151, so that the upper end 150a is against the force of the return spring mechanism and the force of the spring 120. And move the striking plate 123 up to the firing position as shown in FIG. 8b. In the firing position shown in FIG. 8 b, the striking plate 123 leaves the dispensing gap 128 and the foremost staple 126 a is inserted into the dispensing gap 128 by the bias spring 127. The rising strike plate 123 moves the other end 120c of the striker spring 120 upward to deform and bias the striker spring 120. In the firing position shown in FIG. 8 b, the upper end 150 a of the transmission element 150 is ready to detach from the opening of the striking plate 123. Therefore, when the main body 102 is further pressed, the transmission element 150 further rotates, and the upper end 150 a is released from the opening of the striking plate 123. When no upward force is applied to the striking plate 123 by the transmission element 150, the deformed striker spring 120 strongly returns the striking plate 123 back to its initial position shown in FIG. The staples 126 a are distributed to the workpiece 140.

  After the striking plate 123 returns to its initial position, the force applied to the cover or top surface 121 of the main body 102 may be removed. The elastic activation lever 110 returns to its initial position and releases the engagement with the lower end 150b of the transmission element 150. The transmission element 150 returns to its initial position as shown in FIG. 8a under the deflection force of a return spring mechanism (not shown) and the upper end 150a re-engages with the opening of the striking plate. At this point, all parts are ready for the next stapler operation.

  In a further embodiment of a conventional stapler, as shown in FIGS. 9a and 9b, the stapler has a staple magazine 40 that houses staple sticks 41, a base 50 on which a workpiece 70 (such as a bundle of paper) rests, And a cover 60 that receives a pressing force from the user for the stapler operation. During stapler operation, the striking plate 10 is first lifted from the initial position to the firing or releasing position (as shown by the dashed line), leaving a slot space below it, in which the deflection force from the compression spring 42 is applied. One staple is pushed in from the staple stick 41 below. When the striking plate 10 is driven from the release position to its initial position, one staple is driven into the workpiece 70 on the base 50 to clamp the workpiece 70.

  As schematically shown in FIG. 9a, the actuation mechanism of this embodiment of the present invention mainly comprises a leaf spring 20 that drives the striking plate 10 between an initial position and a release position, and the striking plate 10 in the initial position. And an actuating bar 30 for lifting the leaf spring 20 from the lower position to the upper position (as indicated by the broken line) so as to be lifted to the release position. As will be described in more detail below, when the leaf spring 20 reaches the upper position and therefore the striking plate 10 is moved to the release position, the leaf spring 20 is released from the actuating bar 30 and the leaf spring 10 is moved from the upper position to the lower position. When returning to, the striking plate 10 is strongly returned from the release position to the initial position.

  The front end 22 of the leaf spring 20 is moved together with the striking plate 10 so that the striking plate 10 is moved in the vertical direction between the initial position and the release position. (E.g., by opening the striking plate 10). The rear end 23 of the leaf spring 20 is fixed to the staple magazine 40, for example, the upper surface 43 of the housing body of the staple magazine 40.

  When no external force is applied to the actuating rod 30, the actuating rod 30 is in its idle position, the leaf spring 20 remains in the lower position, and the striking plate 10 is in the initial position, as shown by the solid line. . During the stapler operation, the leaf spring 20 is lifted from the lower position to the upper position, and moves the striking plate 10 from the initial position to the release position. At the same time, the leaf spring 20 is loaded when it is lifted upward.

  In the stapler operation, an external force ("F" in FIG. 9a) is applied to the operating rod 30 by pressing the cover 60, for example. As described above, the operating rod 30 engages with the leaf spring 20 under the external force to lift the leaf spring 20 from the lower position to the upper position, thereby moving the striking plate 10 from the initial position to the release position.

  In the preferred embodiment shown in FIG. 9 a, the actuating bar 30 has a rounded L-shaped front end 32. In the idle position, the L-shaped front end 32 is slightly separated from the ramp 33 formed on the upper surface 43 of the staple magazine 40. When an external force is applied to the actuating rod 30, the front end 32 is pushed forward to contact the lamp 33 and move upward along the lamp 33. Alternatively, as shown in FIGS. 10a-10d, the front end 32 of the actuating bar 30 may abut the ramp 33 when the actuating bar 30 is in its initial position.

  A pair of lugs 31 projecting laterally from the length of the actuating bar 30 are provided on the actuating bar 30 (as best shown in FIGS. 10a-10d). When the L-shaped front end 32 is pushed forward (ie, in the direction toward the striking plate 10) by an external force applied to the actuating rod 30, the lug 31 contacts the pair of tabs 21 (most in FIGS. 10a to 10d). It is clearly shown). When the L-shaped front end 32 is pushed under the external force applied to the actuating rod 30 and moves upward along the ramp 33, the lug 31 pushes up the tab 21, thereby causing the leaf spring 20 to move as shown by the broken line. The plate spring 20 is lifted toward the upper position, and a load is applied to the leaf spring 20 at the same time. As a result, the striking plate 10 is lifted to the release position by the front end 22 of the leaf spring 20 against the deflection force from the leaf spring 20 as indicated by the broken line.

  Preferably, when the front end 32 moves upward along the ramp 33, the tab 21 can slide backward along the upper surface of the lug 31. Therefore, the upper surface of the lug 31 functions as a ramp for the tab 21.

  When the leaf spring 20 reaches the upper position, and thus the striking plate 10 reaches the release position, the tab 21 reaches the rear edge 31a of the lug 31, falls off the lug 31, and is detached from the lug 31. Under the deflection force applied to the leaf spring 20, the tab 21 returns to its initial position (that is, the lower position indicated by the solid line), and the load of the leaf spring 20 is released, so that the striking plate 10 is moved from the release position. The staple is driven into the workpiece 70 by driving strongly to the initial position.

  Preferably, after the external force applied to the actuating rod 30 is released, the biasing mechanism is such that the actuating rod 30 can automatically return to its initial position (as shown by the solid line) under a deflection force. (Biasing mechanism) is provided on the actuating rod 30. In the embodiment shown in FIG. 9 a, the deflection force is provided by an elastic lever 34 that connects the rear end 35 of the actuating bar 30 to the upper surface 43 of the staple magazine 40. When the operating rod 30 moves forward under an external force applied via the cover 60, the elastic lever 34 is bent forward, and a deflection force is applied to the elastic lever 34. When the external force is removed, the load applied to the elastic lever 34 is released, and the elastic lever 34 returns to its initial position and pulls the operating rod 30 back to its initial position.

  It is important that the lug 31 of the actuating rod 30 is not disturbed by the tab 21 (returning to its initial position) on its way back to its initial position after the external force is removed. As shown in FIG. 9b, after the external force is removed, the lug 31 is pulled back by the deflecting force from the elastic lever 34 and is returned by the tab 21 already returned from the lug 31 to its initial position along the path “A”. Move along the unobstructed path “B”.

  Preferably, the lug 31 may take an angle (e.g., 30 [deg.]) From the flat body of the actuating bar 30, as shown in FIGS. 10a-10d showing the actuating mechanism at various stages of operation.

  FIG. 10a shows the actuating mechanism in the position before or after the staple operation, since the actuating rod 30 is in its initial idle position because no external force is applied to the actuating rod 30. FIG. The lug 31 of the operating rod 30 is not engaged with the tab 21 of the leaf spring 20. The striking plate 10 is in the initial position, and the leaf spring 20 is in the lower position.

  As shown at different angles in FIGS. 10b and 10c, when the front end 32 of the actuating rod 30 is pushed forward by an external force during the loading phase of the staple operation, the lug 31 engages the tab 31 and the front end 32 When moving upward along the ramp 33, the leaf spring 20 pushes up the tab 21 until it reaches the upper position and the striking plate 10 is lifted to the release position. At this stage, the tab 21 slides backward along the upper surface of the lug 31 toward the rear edge 31 a of the lug 31. As shown in FIGS. 10 b and 10 c, when the leaf spring 20 reaches the upper position and the striking plate 10 reaches the release position, the L-shaped front end 32 moves further along the ramp 33 to move the leaf spring. The ten tabs 21 fall from the rear edge 31 a of the lug 31 and are detached from the operating rod 30. As shown in FIG. 10d, under the biasing force applied to the leaf spring 20 during the loading phase, the leaf spring 20 springs back to the lower position and at the same time strongly returns the striking plate 10 to the initial position to hold the workpiece 70 in place. .

  After the staple operation is finished, the external force is removed from the operating rod 30. Under the deflection force from the elastic lever 34 (see FIG. 9a), the actuating rod 30 returns to its initial position, as shown in FIG. 10a, to prepare for the next staple operation.

  While several preferred embodiments have been described above, it should be understood that many adaptations, modifications, variations and modifications will be possible to those skilled in the art without departing from the spirit of the invention. For example, in order to increase the force of the striker spring 120, it may be advantageous to have two legs.

  Alternatively, the striker spring 120 may be a leaf spring. Further, the operating lever 110 may be disposed in the main body 102 such as between the cover plate 103 and the main body 102 instead of being connected to the base 101. The flat tab 21 may be implemented as a pair of laterally projecting rods attached to the leaf spring 20. The resilient lever 34 may be replaced with any suitable biasing mechanism for returning the actuating rod 30 toward its initial position. For example, the actuating rod 30 may be a leaf spring whose rear end 35 is connected to the cover 60. Accordingly, the scope of the invention is intended to be defined only by the appended claims.

1 is a perspective view of a stapler according to a first embodiment of the present invention. It is a longitudinal cross-sectional view of the stapler shown in FIG. FIG. 2 is an enlarged view of the operating component shown in FIG. 1 when the striking plate is in its initial position. FIG. 2 is an enlarged view of the operating component shown in FIG. 1 when the striking plate is in its firing position. It is a figure which shows the relative movement of a cover plate and a main body. It is a figure which shows the stapler of 2nd Embodiment by this invention. It is a figure which shows the stapler of 3rd Embodiment by this invention. It is a figure which shows the stapler of 3rd Embodiment by this invention. It is a figure which shows the stapler of 3rd Embodiment by this invention. It is a figure which shows the stapler of 4th Embodiment by this invention. FIG. 8 is a diagram showing the operating component shown in FIG. 7 when the striking plate is in its initial position. FIG. 8 is a diagram showing the operating component shown in FIG. 7 when the striking plate is in its firing position. FIG. 6 schematically and partially shows a fifth embodiment of a stapler according to the invention. FIG. 9b schematically shows the path of return movement of the lugs and tabs of FIG. 9a. FIG. 6 is a partial perspective view illustrating one embodiment of a stapler actuation mechanism in one of various stages of operation according to the present invention. FIG. 6 is a partial perspective view illustrating one embodiment of a stapler actuation mechanism in one of various stages of operation according to the present invention. FIG. 6 is a partial perspective view illustrating one embodiment of a stapler actuation mechanism in one of various stages of operation according to the present invention. FIG. 6 is a partial perspective view illustrating one embodiment of a stapler actuation mechanism in one of various stages of operation according to the present invention.

Claims (52)

A base member having a first end and a second end;
A magazine member for receiving a set of staples, the magazine member having a first end and a second end, wherein the first end of the base member and the first end of the magazine member; A magazine member that is pivotally connected to the base member;
A strike plate that dispenses the staples one by one when actuated by a striker spring;
An activation mechanism that activates the operation by the striker spring;
The starter mechanism includes a starter lever arranged to start the operation by the striker spring when the second end of the base member and the second end of the magazine member move toward each other.   The stapler according to claim 1, wherein the activation lever has a lower end fixed to an upper surface of the base member.   The stapler according to claim 2, wherein the activation lever has an upper end that freely comes into contact with a lower surface of the magazine member.   4. The activation lever according to claim 3, wherein the activation lever is made of an elastic material and always biases the second end of the base member and the second end of the magazine member separated from each other by a distance for receiving a workpiece. Stapler.   The striker spring has a first end that engages an opening formed in the striking plate to move the striking plate between a first position and a second position. The stapler described.   When the magazine member and the base member move toward each other, the upper end of the activation lever engages with the striker spring to deform the striker spring, so that the striker spring causes the striker plate to move the first strike plate. The stapler according to claim 5, wherein the activation lever is arranged to move from a position to the second position. A release mechanism,
The release mechanism releases the engagement between the activation lever and the striker spring when the strike plate reaches the second position, so that the striker spring returns to its initial form, and the staple 7. The stapler of claim 6, wherein the striking plate is returned to the first position for dispensing the foremost staples.   The stapler according to claim 7, wherein the release mechanism includes a release rod that pushes down the start lever when the strike plate reaches the second position so that the start lever is detached from the striker spring. The release mechanism further includes a cover member provided above the magazine member,
The stapler according to claim 8, wherein the release bar hangs from the lower surface of the cover member. The cover member is
A first end pivotally connected to the first end of the base member;
The stapler according to claim 9, comprising a free second end.   11. The cover member according to claim 10, wherein the cover member is separated from the upper surface of the magazine member to prevent the release rod from reaching the activation lever before the striking plate reaches the second position. Stapler. The cover member and the magazine member are separated by a stop portion,
The stop portion is formed in the vicinity of the second end of the lower surface of the cover member and is placed on an edge portion formed at the first end of the upper surface of the magazine member. The stapler described.   When the cover member and the magazine member move together toward the base member during operation, the space between the cover member and the magazine member is narrowed by the stop portion moving beyond the edge portion. The stapler according to claim 12, wherein the cover member and the magazine member are pivotally connected to the first end of the base member such that the release rod pushes the activation lever.   The stapler according to claim 13, wherein the edge of the upper surface of the magazine member terminates on a slope inclined forward.   When the cover member and the magazine member move together toward the base member during operation, the stop portion slides along the slope so that the space between the cover member and the magazine member gradually narrows. The stapler of claim 14, wherein the stapler is adapted to move. A magazine member that houses a base member and a set of staples, the base member and the magazine member each having a first end and a second end, and the first end of the base member and the magazine member, respectively. A base member that is pivotally connected to each other at the first end of the magazine member and that is always offset at a distance from each other at the second end of the base member and the second end of the magazine member; A magazine member;
A striking plate that, when actuated by a striker spring, dispenses the staples one by one, and is reciprocable between a first position and a second position;
When the second end of the base member and the second end of the magazine are moved toward each other, the striker plate is moved from the first position to the second position to move the striker spring. And when the striking plate reaches the second position, the striking plate is released to be returned to the first position by the striking plate for dispensing the foremost staple of the staples. A stapler comprising an activation lever disposed on the stapler.   The activation lever is made of an elastic material, and has a lower end fixed to the base member and a free upper end contacting the magazine member, so that the distance between the base member and the magazine member is always set. The stapler of claim 16, wherein the stapler is maintained.   The start lever extends in a direction from the base member to the magazine member toward the second end, so that when the magazine member and the base member are directed toward each other during operation, the upper end is in contact with the lower surface of the magazine member. The stapler according to claim 17, wherein the stapler moves in a direction toward the second end.   The stapler according to claim 18, wherein the activation lever moves the striking plate from the first position to the second position in cooperation with a transmission mechanism.   The stapler according to claim 19, wherein the transmission mechanism includes a drive shaft that engages with an opening provided in the striking plate. A base part;
A main body having a housing for accommodating a staple stick;
A plunger actuated by a striker spring to distribute the foremost staples of the staple stick to a workpiece disposed between the base portion and the body portion;
When the base portion and the main body portion are pressed toward each other, the striker spring is released to return to its initial form, thereby operating the plunger to the point where the most staples are dispensed. A stapler with a trigger to deform. The trigger is an elastic lever;
The elastic lever has a first end fixed to the base portion and a second end that freely contacts the lower surface of the main body portion, whereby the base portion and the main body portion are separated from each other by a certain distance. The stapler according to claim 21, wherein the stapler is always biased apart.   The stapler according to claim 21, wherein the trigger engages with the striker spring and drives the plunger from an initial position to a release position via the striker spring.   The stapler according to claim 21, wherein the trigger engages the plunger and deforms the striker spring by moving the plunger from an initial position to a release position. A striking plate for distributing staples from magazine members;
A leaf spring that engages the striking plate to drive the striking plate;
An actuator that lifts the striking plate from an initial position to a release position by lifting the leaf spring from a first position to a second position on a plane;
When the leaf spring is lifted by the actuator, it is released from the actuator until it is lifted to the second position to drive the striking plate from the release position toward the initial position. A stapler that slides on the plane.   26. The stapler according to claim 25, wherein the actuator comprises a first end adapted to lift the leaf spring by moving upward when a force is applied to the actuator.   27. The stapler of claim 26, wherein the first end comprises a lifting portion adapted to lift the leaf spring when the force is applied to the actuator.   28. The stapler of claim 27, wherein the first end further comprises a forward portion adapted to move on a guide ram when the force is applied to the actuator.   29. The stapler according to claim 28, wherein the lifting portion of the actuator pushes up a tab provided on the leaf spring to lift the leaf spring when the force is applied to the actuator.   The tab and the lifting portion are configured such that when the leaf spring is lifted to the second position, the tab is detached from the lifting portion to release the leaf spring from the actuator. Item 29. The stapler according to Item 29.   31. A stapler according to claim 30, wherein the tab is adapted to slide on the upper surface of the lifting portion as the front portion moves on the guide ram.   When the front portion moves on the guide ram, the tab and the lifting portion are configured such that the lifting portion moves upward and the tab slides back on the upper surface of the lifting portion. The stapler according to claim 31. The lifting portion is a lug protruding laterally from the actuator,
33. The stapler of claim 32, wherein the tab of the leaf spring is adapted to detach from the lug after the tab slides to the edge of the lug.   27. The stapler of claim 26, wherein the actuator further comprises a biasing mechanism that returns the actuator to an initial position when the applied force is removed.   The stapler according to claim 34, wherein the bias mechanism is an elastic lever that connects a second end of the actuator to a body of the magazine member. The actuator further comprises a second end;
36. The stapler of claim 35, wherein the force is applied to the second end.   37. The stapler of claim 36, wherein the force is applied to the actuator by pushing a cover of the staple that is pivotally connected to the magazine member.   38. The stapler of claim 37, further comprising a base plate pivotably connected to the magazine member.   The stapler according to claim 28, wherein the guide ram is provided on the magazine member. A striking plate for distributing staples one by one from the magazine member;
When the plane is lifted from the lower position to the upper position, the strike plate is driven from the initial position to the release position, and when returning from the upper position to the lower position, the strike plate is moved from the release position to the initial position. A leaf spring adapted to return,
An actuator adapted to lift the leaf spring from the lower position to the upper position;
When the leaf spring is lifted by the actuator, the stapler is adapted to slide on the plane of the actuator until the leaf spring is lifted to the upper position where it is released from the actuator.   41. The stapler of claim 40, wherein the actuator comprises a lateral lug that engages a tab provided on the leaf spring to lift the leaf spring when a force is applied to the actuator.   42. The stapler according to claim 41, wherein the actuator further comprises a front end movable on the guide ram when the force is applied.   43. The stapler of claim 42, wherein the tab and the lateral lug are configured such that the tab is disengaged from the lateral lug when the leaf spring reaches the upper position.   44. The stapler of claim 43, wherein the tab is adapted to slide over the top surface of the lateral lug as the front end moves over the guide ram.   45. The stapler of claim 44, wherein the actuator is connected to the magazine member via an elastic lever so that it returns to its initial position when the applied force is removed. An actuating mechanism for driving a spring-actuated stapler striking plate,
A leaf spring that engages the striking plate to drive the striking plate between an initial position and a release position;
An actuator for lifting the leaf spring from a lower position to an upper position on a plane opposed to a deflection force from the leaf spring so that the leaf spring drives the striking plate from the initial position to the release position. ,
When the leaf spring is lifted by the actuator, the leaf spring is lifted to the upper position where the leaf spring is released from the actuator so as to return to the lower position. An actuation mechanism adapted to slide on the plane of the actuator until driven to an initial position.   The actuation of claim 46, wherein the actuator comprises a laterally projecting lug adapted to push up a tab provided on the leaf spring so as to lift the leaf spring when an external force is applied to the actuator. mechanism.   48. The actuation mechanism of claim 47, wherein the tab is adapted to disengage from the lug when the leaf spring reaches the upper portion so as to release the leaf spring from the actuator.   49. The actuation mechanism according to claim 48, wherein the actuator further comprises a front end portion adapted to move on a guide ram when the external force is applied to the actuator.   The actuating mechanism according to claim 49, wherein the tab of the leaf spring is adapted to slide on the upper surface of the lug when the front end portion moves on the guide ram.   51. The actuation of claim 50, wherein the tab and the lug are configured to disengage the tab from the lug when the tab reaches an edge of the lug to release the leaf spring from the actuator. mechanism.   52. The actuating mechanism according to claim 51, wherein the actuator is connected to the magazine member main body via an elastic lever so as to return to an initial position when the external force applied to the actuator is released.

Images