EP1810793A1 - Cassette type stapler - Google Patents

Cassette type stapler Download PDF

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Publication number
EP1810793A1
EP1810793A1 EP04793267A EP04793267A EP1810793A1 EP 1810793 A1 EP1810793 A1 EP 1810793A1 EP 04793267 A EP04793267 A EP 04793267A EP 04793267 A EP04793267 A EP 04793267A EP 1810793 A1 EP1810793 A1 EP 1810793A1
Authority
EP
European Patent Office
Prior art keywords
slider
handle
guide
guide portion
swaying member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04793267A
Other languages
German (de)
English (en)
French (fr)
Inventor
Yoshiyuki e-TOP CORPORATION EBIHARA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
e-Top Corp
e Top Corp
Original Assignee
e-Top Corp
e Top Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by e-Top Corp, e Top Corp filed Critical e-Top Corp
Publication of EP1810793A1 publication Critical patent/EP1810793A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/02—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
    • B25C5/0221—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation
    • B25C5/0242—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation having a pivoting upper leg and a leg provided with an anvil supported by the table or work
    • B25C5/025—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation having a pivoting upper leg and a leg provided with an anvil supported by the table or work the plunger being manually operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/10—Driving means
    • B25C5/11—Driving means operated by manual or foot power

Definitions

  • the present invention relates to a stapler which, when stapling a sheet bundle composed of a plurality of sheets stacked together by means of a staple, can clinch the leg portions of the staple flat along the lower surface of the sheet bundle, that is, a flat clinch type stapler.
  • stapling is effected in two stages: a stage in which the leg portions of the staple penetrate the sheet bundle, and a stage in which the leg portions having penetrated the sheet bundle are flinched.
  • the first stage by pushing down a handle, the handle and a staple box containing staples are brought close to each other.
  • a blade provided on the inner side of the handle pushes out a staple in the staple box, and the leg portions of the staple penetrate the sheet bundle.
  • the member receiving the sheets is prevented from descending by a member (slider) preventing descent of the swaying member, and the blade cannot reach the anvil.
  • the stapler is restored to the state before the operation; that is, the slider is caused to advance to relatively ascend the swaying member, restoring the state in which descent of the swaying member is prevented.
  • the advancement of the slider and the ascent of the swaying member in this process are effected by providing a mechanism which is separate from the mechanism for lowering the swaying member and which uses a coil spring, a plate spring, etc.
  • the motion of the handle is transmitted to the slider by way of a plurality of components added to the handle, frame, magazine, etc.
  • the handle descent motion is transmitted to the slider; in the mechanism for raising the swaying member, there are used a plurality of springs, pins, and rivets.
  • the flat clinch type stapler Although popular in the market, the flat clinch type stapler involves a rather complicated construction and a large number of indispensable components as stated above, inevitably resulting in a complicated manufacturing process and high product price, which constitute an obstacle to its sufficiently widespread use.
  • Another object of the present invention is to provide a stapler which is of a simple construction as described above and which only involves a small number indispensable components, thereby making it possible to provide a product that is easy to manufacture and of low price in the market.
  • Still another object of the present invention is to provide a product which is relatively free from failure owing to the simple construction and the small number of components.
  • a further object of the present invention is to provide a product which helps to maintain a stable stapling performance.
  • a still further object of the present invention is to provide a product in which the number of components is reduced to thereby make it possible to reduce the time required to maintain the requisite level of component precision.
  • a stapler including: a base mechanism equipped with an anvil mechanism; a staple box mechanism rotatably mounted to the base mechanism; a handle mechanism rotatably mounted to the base mechanism, situated above the stable boxmechanism, and equipped with a blade; and a flat clinch mechanism, the flat clinch mechanism having a swaying member and a slider, the slider existing under the swaying member to prevent descent of the swaying member while leg portions of a staple contained in the staple box mechanism penetrate a sheet bundle through descent of the blade, descent prevention for the swaying member being canceled by displacing the slider from under the swaying member, the blade pushing out, through descent of the swaying member, the staple such that forward ends of the leg portions of the staple having penetrated the sheet bundle reach the position where the anvil mechanism exists, the staple binding the sheet bundle through clinching of the leg portions of the staple through engagement of the leg portions of the staple with the anvil mechanism,
  • the stapleboxmechanism refers toabox-shapedmechanism loaded with staples.
  • the present invention is applicable to both of the following systems; one in which the box is provided in the stapler main body and in which when the staples have been consumed, the box is newly loaded with staples alone; and one in which a holder for receiving the box is provided in the staple main body and in which when the staples have been consumed, a box loaded with staples is introduced in its entirety into the holder, that is, the cassette type system.
  • the present invention features a special flat clinching mechanism, in particular, a special sliding mechanism for the slider. That is, the slider slides in one longitudinal direction on the base, whereby the descent prevention for the swaying member is canceled, and the swaying member is allowed to descend.
  • this sliding of the slider is effected by providing the slider with a spring, etc. dedicated to the sliding of the slider.
  • the means for sliding the slider in one direction and the means for sliding it in the other direction are formed by a single mechanism which converts vertical motion of the handle to longitudinal motion of the slider.
  • one direction refers, for example, to the forward direction, in which case the other direction refers to the backward direction.
  • the other direction refers to the forward direction.
  • the vertical motion of the handle implies the motion generated when the user grasping the handle pushes it down to use the stapler and the motion generated when the handle is raised by a handle spring.
  • Such vertical motion is converted to longitudinal motion of the slider by a single mechanism. Owing to the single mechanism, when the handle is further raised by the handle spring, this vertical motion is converted to a longitudinal motion of the slider by the single mechanism, and the slider slides on the base to return to the former position.
  • the return of the slider to the former position means the return of the slider to the position where descent of the swaying member is prevented.
  • the problems are solved by the stapler the stapler according to the first aspect of the invention, characterized in that the handle is provided with a first handle guide portion and a second handle guide portion, that the slider is provided with a first slider guide portion and a second slider guide portion, that, in the one mechanism, through descent of the handle, the first handle guide portion and the first slider guide portion are engaged with each other and the descending motion of the handle is converted to a motion causing the slider to slide in one direction, and that, through ascent of the handle, the second handle guide portion and the second slider guide portion are engaged with each other and the ascending motion of the handle is converted to a motion causing the slider to slide in the other direction.
  • the first handle guide portion is a portion which, when the handle descends, transmits the descending motion to the slider and which is indicated by, for example, reference numerals 37 (Fig. 2), 89 (Fig. 19), and 96 (Fig. 27) referred to below.
  • the descending motion of the handle is received by the first slider guide portion as indicated by, for example, reference numerals 21 (Fig. 3), 74 (Fig. 18), and 109 (Fig. 26) referred to below.
  • the first handle guide portion When the handle starts to descend, the first handle guide portion is first engaged with the first slider guide portion. Further, the first handle guide portion continues to impart a force causing the slider to descend through the descent of the handle.
  • the first handle guide member has a distinctive guide surface, and the motion in the direction in which the handle descends is converted to a motion in the direction in which the slider moves backwards.
  • the second handle guide portion is a portion which, when the handles ascends, transmits the ascending motion to the slider, and which is indicated by, for example, reference numerals 36 (Fig. 2), 90 (Fig. 21), and 97 (Fig. 27) referred to below.
  • the ascending motion of the handle is received by the second slider guide portion as indicated by, for example, reference numerals 20 (Fig. 14), 79 (Fig. 21), 114 (Fig. 26), and 115 (Fig. 34) referred to below.
  • the second handle guide portion When the handle starts to ascend, the second handle guide portion is first engaged with the second slider guide portion. Further, the second handle guide portion continues to impart a force causing a protruding member to ascend through the ascent of the handle.
  • the second handle guide member has a distinctive guide surface, and the motion in the direction in which the protruding member ascends is converted to a mot ion in the direction in which the slider moves forwards.
  • the first handle guide portion and the second handle guide portion may be provided as spaces in the handle itself, or may be provided so as to protrude from the right-hand side surface and the left-hand side surface of the handle. They may also be provided on a leg portion of the handle.
  • the configuration of the first handle guide portion and the second handle guide portion may, for example, be rectangular or circular.
  • the slider guide portion and the second handle guide portion may be provided directly in the slider main body portion in the form of cutouts or protrusions.
  • the problems are solved by the stapler according to the second aspect of the invention, characterized in that both the first handle guide portion and the second handle guide portion are provided on a leg portion of the handle, and that both the first slider guide portion and the second slider guide portion are surfaces provided on the slider.
  • the leg portion of the handle is a member protruding downwards from the handle like a leg.
  • the configuration of the leg portion is not restricted to a rectangular one; it may also be triangular, spherical, etc.
  • the configuration of the slider guide portion is in conformity with the configuration of the leg portion so as to allow engagement of the first handle guide portion with the first slider portion, and engagement of the second handle portion with the second slider portion.
  • the problems are solved by the stapler according to the third aspect of the invention, characterized in that the first handle guide portion is a rear end of a lower end of the leg portion of the handle, that the second handle guide portion is a front end of the lower end of the leg portion of the handle, that the first slider guide portion is a front surface of a first protrusion provided at a rear of the slider, and that the second slider guide portion is a rear surface of a second protrusion provided at the rear of the slider.
  • the leg portion is of a boot-like configuration.
  • the boot heel portion constitutes the first handle guide portion, and the boot toe portion constitutes the second handle guide portion.
  • the corner portions of those guide portions it is desirable for the corner portions of those guide portions not to be sharp but rounded.
  • two pairs of upwardly extending protrusions are arranged longitudinally.
  • the rear surface of the front protrusion constitutes the second slider guide portion, and the front surface of the rear protrusion constitutes the first slider guide portion.
  • the positions and configuration of these two pairs of protrusions and the configuration of the leg portion of the handle convert vertical motion of the handle to longitudinal motion of the slider.
  • the problems are solved by the stapler according to the second aspect of the invention, characterized in that the first handle guide portion and the second handle guide portion are formed by an inner peripheral surface of an opening provided in the handle, and that the first slider guide portion and the second slider guide portion exist on a protruding portion of a protruding member engaged with a stopper one end of which is fixed to the slider and the other end of which is fixed to the base.
  • the inner peripheral surface of the opening provided in the handle is of a distinctive configuration; this configuration converts vertical motion of the handle to longitudinal motion of the slider.
  • the "protruding member” is of a configuration whose central portion protrudes, such as an arcuate one or an Inverted V-shaped one.
  • the “protruding portion of the protruding member” means the central portion in the case of an arcuate configuration, and the crest of an Inverted V-shaped chevron in the case of an Inverted V-shaped member.
  • the problems are solved by the stapler according to the fifth aspect of the invention, characterized in that the first handle guide portion is an upper surface of the inner peripheral surface of the opening, that the second handle guide portion is a lower surface of the inner peripheral surface of the opening, and that the protruding member is an Inverted V-shaped member, with the first slider guide portion existing at the external angle of the apex of the Inverted V-shaped member, and the second slider guide portion existing at the internal angle of the apex of the Inverted V-shaped member.
  • the bent portion refers to the apex portion of the Inverted V-shaped member.
  • One end of the Inverted V-shaped member is fixed to the slider, and the other end of the Inverted V-shaped member is a free end, and this free end portion is engaged with the stopper fixed to the base.
  • the outer side of the apex of the Inverted V-shaped member is engaged with the first handle guide portion as the first slider guide portion, and receives a downwardly directed force.
  • the other end of the Inverted V-shaped member is engaged with the stopper fixed to the base, the downwardly directed force escapes in the direction of one end of the Inverted V-shaped member fixed to the slider. As a result, the slider slides backwards on the base.
  • the second slider portion is borne by the inside portion of the apex of the Inverted V-shaped member.
  • the second handle guide portion is engaged with the second slider portion, and tries to lift the Inverted V-shaped member as the handle ascends.
  • the lifting motion is converted to a motion causing the slider to slide forwards on the base.
  • the problems are solved by the stapler according to the fifth aspect of the invention, characterized in that the stopper exists in front of the protruding member, and that a downward motion of the handle is converted to a motion causing the slider to slide backwards.
  • the positions of one end of the Inverted V-shaped member fixed to the slider and the other end thereof engaged with the stopper are longitudinally reversed from those according to the sixth aspect of the invention.
  • the downward motion of the handle is converted to a motion causing the slider to slide backwards
  • the vertical motion of the handle is converted to a motion causing the slider to slide forwards.
  • the problems are solved by the stapler according to the fourth or seventh aspect of the invention, characterized in that the a swaying member guide is provided in front of and below the swaying member, that, when the slider slides backwards on the base, a front upper end of the slider moves along the swaying member guide, the swaying member descending to a lowermost position when the front upper end of the slider is situated at the rear end of the swaying member guide, and that, when the slider slides forwards on the base, the front upper end of the slider moves along the swaying member guide, the slider preventing descent of the swaying member when the front upper end of the slider is situated on the front side of the forward end of the swaying member guide.
  • the swaying member guide is a guide surface by which a corner of the slider is guided when the prevention by the slider is canceled and the swaying member descends. It is necessary for the configuration of this surface to be one suitable for effecting the descent smoothly. Depending on the length of the staple legs, the descending distance differs; this also indicates that there are various configurations suitable for smooth descent.
  • the swaying member guide may be configured into a convex surface, a concave surface, or a sigma-shaped surface.
  • Such a guide surface may be provided not on the swaying member but on the slider.
  • a ninth aspect of the present invention describes the case in which it is provided on the slider.
  • the problems are solved by the stapler according to the fourth or seventh aspect of the invention, characterized in that a slider guide is provided above the forward end of the slider, that, when the slider slides backwards on the base, a guide end provided in front of and below the swaying member moves along the slider guide, the swaying member descending to a lowermost position when the guide end is situated at the forward end of the slider guide, and that, when the slider slides forwards on the base, the guide end moves along the slider guide, the slider preventing descent of the swaying member when the guide end is situated on the rear side of the slider guide.
  • the problems are solved by the stapler according to the fifth aspect of the invention, characterized in that the stopper exists at a rear of the protruding member, and that a downward motion of the handle is converted to a motion causing the slider to slide forwards.
  • the problems are solved by the stapler according to the tenth aspect of the invention, characterized in that a slider guide is provided above a front end of the slider, that, when the slider slides forwards on the base, a guide end provided in front of and below the swaying member moves along the slider guide, the swaying member descending to a lowermost position when the guide end is situated at the front end of the slider guide, and that, when the slider slides backwards on the base, the guide end moves along the slider guide, the swaying member preventing descent of the slider when the guide member is situated on the rear side of the rear end of the slider guide.
  • the problems are solved by the stapler according to the first aspect of the invention, characterized in that the handle is equipped with a first handle guide portion and a second handle guide portion, that the slider is equipped with a first slider guide portion and a second slider guide portion, that, in the single mechanism, through descent of the handle, the first handle guide portion and the first slider guide portion are engaged with each other through a handle-slider guide member to convert the descending motion of the handle to a motion causing the slider to slide backwards, and that, through ascent of the handle, the second handle guide portion and the second slider guide portion are engaged with each other through the handle-slider guide member to convert the ascending motion of the handle to a motion causing the slider to slide forwards.
  • the invention according to the twelfth aspect of the invention is characterized in that the first and second handle guide members and the first and second slider guide members are engaged through the intermediation of the handle-slider guide member, which is a separate member.
  • the invention according to the twelfth aspect of the invention is characterized in that the degree of freedom in the design of the stapler is enhanced.
  • the leg length of the handle-slider guide member is adjusted by the principles of the lever, whereby it is possible to increase or reduce the sliding distance of the slider.
  • the magnitude of the handle stroke and the magnitude of the force to be imparted to the handle can be adjusted through the leg length, so it is possible to achieve a high degree of freedom in design.
  • the present invention is easily applicable to various staplers ranging from small staplers to large staplers for stapling thick sheet bundles.
  • the problems are solved by the stapler according to the twelfth aspect of the invention, characterized in that the handle-slider guide member is rotatably fixed to a base column provided on the base, that the first handle guide portion and the second handle guide portion are formed by an inner peripheral surface of an opening provided in the handle, that one end of the handle-slider guide member is engaged with the inner peripheral surface, that the first slider guide member and the second slider guide member exist in a cutout provided in the slider, and that the other end of the handle-slider guide member is engaged with the cutout.
  • the inner peripheral surface of the opening provided in the handle is of a distinctive configuration, and one end of the handle-slider guide member is engaged with the inner peripheral surface to be guided by a path along the inner peripheral surface, so the vertical motion of the handle is converted to the longitudinal motion of the slider.
  • the user experiences a snapping shock when the swaying member is detached from the holder.
  • a shock is substantiallymitigated.
  • Figs. 1 through 13 show Embodiment 1.
  • contact between the handle leg and the slider rear portion converts the descending motion of the handle to longitudinal sliding motion of the slider.
  • the slider slides backwards, and the guide surface for gently lowering the swaying member is provided on the swaying member.
  • the side of the stapler as seen in the long-axis direction where the blade exists is referred to as the front side, and the side thereof where the handle and the base are rotatably fixed is referred to as the rear side; the side where the handle exists is referred to as the upper side and the side where the base exists is referred to as the lower side; and the right-hand side and the left-hand side are those as seen from above.
  • a stapler 1 is composed of a base 2, a slider 4, a swaying member 5, a base cover 3, a staple case 8, a frame 6, and a handle 7.
  • a handle spring 40 is provided inside the handle, and urges the handle away from the frame.
  • a base spring 43 is provided under the frame, urging the base away from the frame.
  • a staple case spring 42 At the rear of the staple case, there is provided a staple case spring 42, urging the staple case so as to push it forwards.
  • an anvil base 10 is provided on the front portion of the base 2, and an iron anvil 11 is fitted in at this position.
  • the slider 4 has a recess 16 in its front portion.
  • the recess 16 is provided for the purpose of keeping off from the anvil 11 for stapling when the stapler is assembled.
  • the slider 4 has a recess 22 in its rear portion.
  • the recess 22 is provided for the purpose of keeping off from the swaying member base 12 when the stapler is assembled.
  • a handle leg guide mechanism for guiding the handle leg. That is, there are provided handle leg guides 18 extending upwards, and handle leg guides 19 extending upwards likewise. Guide surfaces 20 and 21, formed by the leg guide, guide handle legs 35 as described below.
  • the slider 4 is placed on the base such that its right and left outer walls extend along the slider guides 14 of the base 2.
  • the swaying member 5 has a leg 25 in the rear portion thereof.
  • the leg 25 has a hole 26.
  • the hole 26 corresponds to the swaying member support shafts 13 provided on the swaying member base 12 on the base 2 (Fig. 4).
  • Figs. 6 through 12 show changes in the positional relationship between the handle, the swaying member, and the slider at the time of stapling.
  • Fig. 13 is an explanatory partial sectional view showing changes in the positional relationship at the time of stapling including changes in the positional relationship of the staple case.
  • leg front ends 36 of the handle legs 35 are engaged with the guide surfaces 20 of the handle leg guides 18 of the slider 4, so the slider 4 is at the foremost position; at this time, descent of the swaying member 5 is prevented.
  • the slider 4 When the handle is further lowered as shown in Fig. 9, the slider 4 further slides backwards, and descends along the curve provided on the lower surface of the swaying member. When the swaying member is brought to the lowermost position, the staple is clinched flat along the back surface of the sheet. At this time, the stapler is in the state as shown in portion E of Fig. 13.
  • the handle As shown in Fig. 10, by releasing the handle, the handle is raised by the handle spring (Fig. 1) ; when the handle is raised, the front leg ends 36 of the handle legs 35 push the guide surfaces 20 of the slider 4 forwards, and the slider 4 slides forwards a little.
  • Embodiment 1 provides the following effects.
  • the slider and the swaying member are constantly held in contact with each other by virtue of the guide surfaces provided on the swaying member, so no shock or noise is generated. Further, the operation of the swaying member is adjusted to the kind of staple, the length of the staple legs, the hardness of the staple, etc., so an optimum flat clinching effect is to be expected, making it possible to provide a stapler of a satisfactory stapling performance.
  • the swaying member is rotatably supported by a bearing integrally formed on the base, so no such components as a pin is required, with the result that the assembly is facilitated, and the stapler is made less subject to failure.
  • the slider is simply placed on the base 2, so the assembly is facilitated, and the stapler is made less subject to failure.
  • Reliable positioning for the slider is established by a slider guide integrally formed on the base or a guide device of perfect accuracy integrally formed on the bases such as the anvil base and the swaying member base, so it is possible to automatically effect a stable sliding.
  • the sliding distance of the slider can be adjusted easily, so the design of a product in conformity with staple leg length is facilitated.
  • Embodiment 2 is the same as Embodiment 1 in that it adopts a mechanism for converting vertical motion of the handle to longitudinal motion of the slider; it differs from Embodiment 1 in that the guide surface for gently lowering the swaying member is provided not on the swaying member but on the slider.
  • Embodiment 2 provides the following effects.
  • Embodiment 3 adopts a mechanism formed by a stopper provided on the base and an Inverted V-shaped member provided on the slider. Further, at the time of clinching, the slider slides backwards, and the guide surface for gently lowering the swaying member is provided on the swaying member.
  • each Inverted V-shaped member 76 is mounted to the rear end of a slider 75.
  • the forward end of each Inverted V-shaped member 76 is a free end.
  • a stopper 82 is fixed to the base 2, and the slider 75 is placed at a position such that the forward, free end of the Inverted V-shaped member is held in contact with the stopper 82. Further, when the slider is placed on the base 2, the swaying member mounted on the base is held in contact with the slider at the position as shown in Figs. 18 and 22.
  • the swaying member is rotatably fixed to the base cover 3 at a position indicated by numeral 112. While Fig. 26 shows Embodiment 4, the positional relationship between the swaying member and the base cover is the same in Embodiment 3 and Embodiment 4.
  • FIGs. 19 through 25 sequentially illustrate the mechanism of the stapler of Embodiment 3 at the time of operation.
  • a recess 88 is formed by a handle guide member 87 provided on the handle member 7, and a guide shaft 79 formed of an Inverted V-shaped member is engaged with the recess 88.
  • the apex of the Inverted V-shaped member 74 is engaged with an upper inner wall 89 of the recess 88, whereby a force is exerted so as to spread the legs of the Inverted V-shaped member.
  • the front end of the Inverted V-shaped member is engaged with the stopper 82 of the base 2, and the Inverted V-shaped member is mounted to the slider 75, whereby the slider 75 slides backwards on the base 2 (Figs. 19 through 21) to lower the swaying member (Fig. 22) .
  • a lower inner wall 90 of the recess 88 and the Inverted V-shaped guide member 79 are engaged with each other, and, as the handle member ascends, a force is exerted so as to bring the distal ends of the legs of the Inverted V-shaped member closer to each other, and the slider 75 slides forwards on the base 2 (Figs. 23 and 24), and the swaying member 80 is placed on the slider 75 again (Fig. 25).
  • Embodiment 3 provides the following effects.
  • the movement of the slider can be made light and smooth.
  • the width of the slider movement can be easily adjusted according to the angle of the Inverted V-shapedportion of the Inverted V-shaped member. That is, the width of the movement of the slider depends upon the staple leg length, that is, the thickness of the object to be stapled. Thus, the force with which the slider is caused to slide can be made large or small according to the angle of the Inverted V-shaped portion of the Inverted V-shaped member.
  • Embodiment 4 is the same as Embodiment 3 in that it employs a mechanism for converting vertical motion of the handle to longitudinal motion of the slider; it differs from Embodiment 3 in the positional relationship between the stopper and the slider. Owing to this difference, at the time of clinching, the slider slides forwards.
  • the guide surface for lowering the swaying member is provided on the slider.
  • Figs. 27 through 33 sequentially illustrate the stapler mechanism of Embodiment 4 at the time of operation. That is, a recess 95 is formed owing to the handle guide member provided on the handle member 7, and the recess 95 is engaged with a guide shaft 94 provided near the apex 109 of the Inverted V-shaped member. By pushing down the handle 7, the apex 109 of the Inverted V-shaped member is engaged with an upper inner wall 96 of the recess 95, whereby a force is exerted so as to spread the legs of the Inverted V-shaped member.
  • the rear end of the Inverted V-shaped member is engaged with a stopper 113 on the base 2, and the Inverted V-shaped member is mounted to the slider 99, whereby the slider 99 slides forwards on the base 2 (Figs. 31 through 33), causing the swaying member to descend (Fig. 31). After this, as the handle member ascends, the slider 99 slides backwards on the base 2 (Figs. 32 and 33), and the swaying member 98 is placed on the slider 99 again (Fig. 27).
  • Embodiment 4 provides the following effect: Since the guide surface of the slider and the forward end of the bottom surface of the swaying member move while in contact with each other, the slider moves smoothly forwards. Since the guide surface of the slider and the forward end of the bottom surface of the swaying member are constantly held in contact with each other, no shock or noise is generated until the completion of stapling.
  • Embodiment 5 is the same as Embodiment 4 in that it employs a mechanism (the Inverted V-shaped member 107, the stopper 82, etc.) for converting vertical motion of the handle to longitudinal motion of the slider; it differs from Embodiment 4 in that the guide surface for gently lowering the swaying member is provided on the slider.
  • a mechanism the Inverted V-shaped member 107, the stopper 82, etc.
  • Embodiment 5 at the time of completion of stapling, the forward end of a slider 106 causes a swaying member 105 to descend gently and smoothly, and the bottom surface of the swaying member is gently received by the forward end, so there is no need to provide a cushion member or the like.
  • the rear bottom surface of the swaying member is constantly held in contact with the slider, so there is generated no shock until the swaying member reaches the lowermost point; thus, no uncomfortable noise is generated, and a smooth operation is always to be expected.
  • Embodiment 6 employs an arm mechanism; at the time of clinching, the slider slides backwards, and the guide surface for gently lowering the swaying member is provided on the swaying member.
  • an arm 69 is equipped with a pair of upper arms 66, a central arm 68, and a lower arm 69 engaged with the slider.
  • the slider 60 has recesses 61, 62 similar to those of the slider of Embodiment 1. That is, the positional relationship between the slider and the swaying member is the same as that in Embodiment 1; the recess 61 is a recess for mounting the swaying member to the base 2, and the recess 62 is a recess for an anvil base.
  • Arm supports 55 are provided on the base 2, and holes 56 of the arm supports 55 are engaged with the arm.
  • an arm support 63 At the rear of the slider 60, there is provided an arm support 63, which is engaged with the lower arm 69.
  • the handle 7 is equipped with a handle guide member 70, and a space 71 is provided between it and the handle 7.
  • An arm guide shaft 67 is engaged with the space 71.
  • the positional relationship between the arm guide shaft 67 and the space 71 of the handle guide member 70 when the handle 7 is rotated is as shown in Figs. 46 through 49, and the corresponding positional relationship between the slider 60 and the swaying member 58 is as shown in Figs. 40 through 45. That is, by downwardly rotating the handle, the slider 60 slides backwards (Fig. 42), and, by further rotating the handle downwardly to cause the slider 60 to slide backwards, the engagement between the slider 60 and the swaying member 58 is canceled, and the swaying member 58 descends (Fig. 44). By upwardly rotating the handle, the arm causes the slider 60 to slide forwards (Fig. 45), with the result that the swaying member is placed on the slider, and the state prior to the operation is restored (Fig. 40).
  • the handle guide member 70 is mounted so as to protrude sidewise with respect to the handle 7.
  • the upwardly facing surface of the handle guide member 70 constitutes a lower guide surface 73
  • the downwardly facing surface of the handle 7 constitutes an upper guide surface 72. That is, the upper surface of the upper arm 66 is in contact with the upper guide surface 72, and the lower surface of the guide shaft 67 protruding sidewise from the arm 66 is in contact with the lower guide surface 73 of the space 71.
  • Embodiment 6 provides the following specific effects. Since the arm utilizes the principles of the lever, the arm can transmit the movement of the handle to the slider smoothly and lightly.
  • the movement of the handle is transmitted to the slider through the arm.
  • the movement width of the slider can be enlarged, so the embodiment is also applicable to long-leg staples for thick paper sheets.
  • Embodiment 6 is advantageous in that it makes it possible to achieve a higher degree of freedom in terms of stapler design.
  • the handle-slider guide member owing to the principles of the lever, it is possible to cause the slider to slide greatly by small movement of the handle. Further, it is possible to cause the slider to slide to a small degree by a great movement of the handle.
  • this embodiment can be easily applicable to various designs from a small size stapler to a large size stapler for stapling thick sheet bundles.
  • the position of the handle guide member can be freely changed in the longitudinal direction.
  • Embodiment 7 adopts an arm member mechanism; at the time of clinching, the slider slides backwards, and the guide surface for gently lowering the swaying member is provided on the slider.
  • the effect obtained by using a separate member, that is, the arm member mechanism, is the same as that of Embodiment 6.
  • the guide surface is provided on the slider, so the descent and ascent of the sliding member can be made light and smooth and quiet, with the impact sound being reduced.
  • the present invention is to be utilized in the flat clinching mechanism of a flat clinch type stapler.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP04793267A 2004-10-29 2004-10-29 Cassette type stapler Withdrawn EP1810793A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/016166 WO2006046310A1 (ja) 2004-10-29 2004-10-29 カセット式ステープラー

Publications (1)

Publication Number Publication Date
EP1810793A1 true EP1810793A1 (en) 2007-07-25

Family

ID=36227562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04793267A Withdrawn EP1810793A1 (en) 2004-10-29 2004-10-29 Cassette type stapler

Country Status (4)

Country Link
EP (1) EP1810793A1 (ja)
JP (1) JPWO2006046310A1 (ja)
CA (1) CA2585567A1 (ja)
WO (1) WO2006046310A1 (ja)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3013200U (ja) * 1994-12-28 1995-07-11 株式会社羽生田製作所 ステープラー

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006046310A1 *

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Publication number Publication date
JPWO2006046310A1 (ja) 2008-08-07
CA2585567A1 (en) 2006-05-04
WO2006046310A1 (ja) 2006-05-04

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