CN101466502A

CN101466502A - Stapler

Info

Publication number: CN101466502A
Application number: CNA2006800546160A
Authority: CN
Inventors: 海老原代师行
Original assignee: RAPESCO OFFICE PRODUCTS PLC
Current assignee: RAPESCO OFFICE PRODUCTS PLC
Priority date: 2006-03-17
Filing date: 2006-12-14
Publication date: 2009-06-24
Also published as: TW200800521A; CA2645866A1; GB2436081A; GB0605471D0; WO2007107687A1

Abstract

A stapler (1) has a handle (10), a hammer (9) for ejecting staples, and a hammer spring (20) for driving the hammer when released. The hammer (9) is prevented by a link member (30), held in place by a spring (40). As the handle (1) is depressed, the hammer spring (20) is compressed until a trigger (12) is brought into contact with the link member (3), releasing the hammer spring (20) and driving the hammer to release a staple. Hence, a large stapling force may be applied accurately and reliably.

Description

Stapler

Technical field

The present invention relates to a kind of stapler.

Background technology

Known " power-assisted " stapler, it provides powerful staple driving force from the user to the less input power that stapler applies.Usually, " power-assisted " stapler uses disc spring, and this disc spring storage is owing to the handle of stapler is actuated by the user the energy that produces.The energy of storage is released then to drive staple and leaves stapler.Patent gazette US 6 145 728 with so-called " pleating machine " structure applications in stapler.Utilize the mechanism of stapler by brute force staple to be gone out from the stapler ejection, this need rise and compression disc spring piston by means of pivot rotaring lever simultaneously.After the raised certain distance of piston, the pivot rotaring lever arm slides and is disengaged with piston, and this piston reduces so that staple ejection from stapler is gone out rapidly under the effect of disc spring subsequently.But this mechanism is always unreliable, and if the existence lever break away from piston too early, the then staple danger that may unexpectedly from stapler, be extruded.Although attempted improving design to avoid this danger, this can cause the complex structure of stapler.In addition, the point of the admittance lever of piston may since a large amount of frictions that when lever slides engaging of disengaging and piston, produce be worn.

Typically " desk-top " different problems that stapler ran into are in order to change staple, and the user must and open the base portion and the framework of staple in upset in the wide-angle very, and this operation is more loaded down with trivial details.

Summary of the invention

According to the present invention, a kind of stapler is provided, this stapler comprises:

(a) be used for the actuator of the power that applies to stapler by the user;

(b) can move to the second place goes out staple with ejection from stapler staple ejector from primary importance;

(c) energy storage elements, this energy storage elements is arranged to when by described actuator stored energy when stapler applies power, and is arranged to discharge described energy by making described staple ejector move to the described second place from described primary importance; And

(d) the opposing element that can between first state and second state, move, under this first state, this opposing element keeps described staple ejector to be in described primary importance when applying power by described actuator, and under this second state, this opposing element allows described staple ejector to move to the described second place under the effect of described energy storage elements.

Embodiment according to stapler of the present invention can provide the staple that is reliably activated driving force, and this is because before the opposing element moved to the second place, the staple ejector was kept the correct position in primary importance.Embodiment can be made and had a simple structure by a spot of parts.Particularly, be used for during stapling operation, stopping that the opposing element of staple motion can be simple structure.Thereby, except the stability that increases stapler, can also simplify the manufacturing of embodiments of the present invention, and reduce relevant cost.

In one embodiment, staple has handle, is used for the hammer of ejection staple and is used for driving the hammer spring of described hammer when being released.Utilize link member to prevent that described hammer from descending, this link member remains on correct position by spring.When handle was pressed, described hammer spring was compressed, and contacts with link member up to a trigger, discharged described hammer spring driving described hammer, thereby discharged staple.Therefore, can be accurately and apply big bookbinding power reliably.

Description of drawings

Only preferred implementation of the present invention is described in detail below with way of example, in the accompanying drawings:

Fig. 1 is that first embodiment according to stapler of the present invention is in the outer side view when static;

Fig. 2 is the external view of the stapler of the Fig. 1 during stapling operation;

Fig. 3 is the cutaway view of stapler that is in Fig. 1 of " static " state;

Fig. 4 is the exploded perspective view of parts of the stapler of Fig. 1;

Fig. 5 is the vertical view of hammer of the stapler of Fig. 1;

Fig. 6 is the side view of parts that illustrates in greater detail the stapler of Fig. 1;

Fig. 7 is the front view of link member of the stapler of Fig. 1;

Fig. 8 is the top cross-sectional view of internal structure of the stapler of Fig. 1;

Fig. 9 is the cutaway view of internal structure that runs through the stapler of Fig. 1;

Figure 10 to 14 is the cutaway views of internal structure that are illustrated in the stapler of the Fig. 1 during the stapling operation;

Figure 15 illustrates the stapler of Fig. 1, and wherein the box of stapler stretches out from stapler;

Figure 16 illustrates the cutaway view that second embodiment of the invention stapler is in the internal structure when static, has wherein omitted rod spring and hammer spring for clarity; And

Figure 17 is the cutaway view that is illustrated in the stapler of the Figure 16 during the stapling operation.

The specific embodiment

Now with reference to first embodiment of Fig. 1 to 15 description according to stapler of the present invention.

Fig. 1 and 2 illustrates respectively and is in when static and first embodiment when using.As shown in Figure 1, first embodiment of stapler 1 comprises base portion 2, framework 3 and handle 10.Framework 3 is connected by frame base axle 59 with base portion 2, thereby framework 3 can pivot with respect to base portion 2.Similarly, handle 10 pivotally is installed on the framework 3 by framework Handle axis 60.The upper surface of base portion 2 is provided with plate-like anvil 61, and framework 3 is provided with the box 55 that can load staple.

The article of ordering together (for example loose paper) to be installed are inserted gap between anvil 61 and the box 55 in the front portion of stapler 1, and by the user towards base portion 2 downward push handle 10, as shown in Figure 2.Such as will be described in more detail, this causes staple being released from box 5 with powerful ejection force by the mechanism of stapler.The leg that is pushed the staple that ejects pierces through the bulk goods of just being bound, the anvil 61 of the tip of staple legs contact subsequently.The upper surface of anvil 61 is provided with the pit (not shown) of contoured, thereby makes the leg of contact pit crooked toward each other, therefore makes staple closed and loose article are fastened to together.Anvil 61 also is provided with the pit of contoured to (not shown), and this makes the leg motion of staple separate rather than close up to pit, with fixing loose article.The pit of the leg of staple contact contoured still be the pit of contoured to determining by the user, the user can be with respect to base portion 2 rotation anvils 61 to be positioned properly pit or pit is right.In case loose article have been stapled to together, handle 10 is discharged to return " static " state shown in the Fig. 1 that hereinafter will describe in more detail by the user.

The internal structure of stapler 1 is described now with reference to Fig. 3 to 9.As mentioned above, handle 10 is installed on the framework 3 pivotally by framework Handle axis 60.Handle 10 itself comprises that this connecting wall 63 is inclined upwardly with respect to base portion 2 by connecting wall 63 joining two sidewalls that dangle 62 downwards.From Fig. 3 as seen, the inner surface of connecting wall 63 is provided with the trigger 12 that dangles and the hammer spring retainer 13 of rounded protuberance form downwards, hereinafter will be well understood to the purposes of trigger 12.

Handle spring 50 is connected to framework 3 by axle 51.Handle spring 50 comprises from the extended upper arm 64 in opposite end and the underarm 65 of the coil 66 of hammer spring 50.Abutment on underarm 64 contact frame 3.The inner surface of upper arm 64 contact connecting walls 63, and bias voltage handle 10 makes it upwards away from base portion 3.

The bottom of framework 3 has elongated staple cartridge 55.Box 55 slidably is installed on the framework 3, and the front end of box 55 has the opening 66 that therefrom ejection goes out staple.

Framework 3 also is provided with hammer 9, and this hammer 9 is being positioned on the framework 3 above the box 55, and towards the front portion of box 55.As described in greater detail below, hammer 9 is installed on the framework 3 pivotally by hammer frame pin 25.

It is own that Figure 4 and 5 illustrate in greater detail hammer 9.This hammer comprises the framework that is formed by two sidewalls 67 that are roughly " L " shape, and the horizontal bottom wall 4 and the vertical end wall 68 of the front portion of this sidewall 67 by being arranged on hammer 9 join to together.Each sidewall 67 is provided with pair of holes 7,8; Each hole of each sidewall 67 is oriented to align with the corresponding aperture that forms in another sidewall.Each sidewall 67 also has the hammer spring retainer 6 that is the level board form, and this retainer 6 is arranged in the top of each sidewall 67 at the rear portion of hammer 9.In the front portion of hammer 9, it is outstanding forward from vertical end wall 68 that blade is installed protuberance 5.The cross section of this protuberance 5 makes and blade 45 can be installed on the protuberance 5 in the hole 69 of inserting the correspondingly-shaped that forms in the blade 45 by with protuberance 5.As hereinafter will be clearly, hammer 9 and blade 45 comprise the staple ejector that is used for going out from box 55 ejections staple.

As shown in Figure 5, the diapire 4 of hammer 9 is provided with center rectangular aperture 16.The width of this opening 16 is narrowed down towards the front portion of hammering 9 into shape.

As shown in Figure 3, hammer 9 is pivotally mounted on the framework 3 by hammer frame pin 25, these pin 25 outstanding aftermost holes 8 of passing the alignment of hammer sidewall 67, and charge into the receptacle (not shown) that forms in the framework 3.Hammer frame pin 25 is also outstanding passes the coil 70 of the hammer spring 20 in the zone between the hammer sidewall 67 of the rear end of hammer 9, thereby provides installation for this coil 70.Hammer spring 20 comprises from the extended upper arm 21 in opposite end and the underarm 22 of hammer spring coil 70.The degree that moves upward of upper arm 21 is subjected to the restriction of the hammer spring retainer 6 of adjacent hammer sidewall 67.The underarm 22 of hammer spring 20 is shelved on the diapire 4 of hammer.As shown in Figure 3, when hammer 9 is installed on the framework 3, the hammer spring retainer 13 that the last side contacts of upper arm 21 forms on the inner surface of handle 10.At this " static " state, the upper arm and the angle between the underarm of hammer spring 20 are α °.

Link member 30 also is connected to hammer 9, these link member 30 outstanding openings 16 that form in the diapire 4 of hammer 9 that are passed in.As shown in Figure 4, link member 30 comprises upper-part 31 and a pair of lower member 32.Upper-part 31 is the form of plate, and it has in the outstanding forward trigger receptacle 36 in the lower end of this upper-part 31.Upper-part 31 is pivotally connected to each tabular lower member 32 in its lower end by connecting pin 33.

Link member 30 is pivotally mounted on the hammer 9 by mount pin 34, and this mount pin 34 is outstanding from the either side of the upper end of upper-part 31, and the outstanding hole 7 of passing the alignment of the forefront of hammering sidewall 67 into shape.Similarly, lower member 32 is pivotally mounted on the framework 3 by mount pin 35, and this mount pin 35 is outwards outstanding from the lower end of lower member 32, and is received within the hole (not shown) that forms in the framework 3.Therefore, should be understood that link member 30 is connected between hammer 9 and the framework 3.

Rod spring 40 is installed on the framework by axle 41.Rod spring 40 comprises extended underarm 71 and upper arm 72 from the opposite end of rod spring coil 73.The abutment that underarm 71 contacts are provided with on framework 3, and the top at the back side of one of lower member 32 of the upper arm 72 contact link members 30 of rod spring 40.Therefore rod spring 40 provides bias effect, this bias effect to be used for along forwards to promptly promoting especially connecting pin 33 of link member 30 along the direction towards the front portion of stapler 1.Because this bias effect, as shown in Figure 6, when stapler 1 was static, the front 37 of lower member 32 contacted with the link stopper portions 15 of formation on the diapire 4 of hammer 9.Therefore, when stapler 1 was static, link member 30 was held and is in stand up position, and the axis of connecting pin 33 and

mount pin

34,35 is in the same plane substantially.

The operation of first embodiment hereinafter is described with reference to Fig. 9 to 14.Fig. 9 illustrates framework 3, the box 55 of the stapler 1 when stapler 1 is static and hammers 9 into shape.For staple items, the user pushes handle 10 downwards, and this causes handle spring 50 to be compressed and framework 3 is rotated down around frame base axle 59, thereby the article that will be bound are clamped between the front end of the anvil 61 of base portion 2 and box 55.Except the compression of handle spring 50, the moving downward of the handle 10 hammer spring 20 that also gradually reduces.The upper arm of hammer spring 20 is prevented from moving upward this compression of release owing to it contacts with hammer spring retainer 13.Therefore, the underarm 22 of hammer spring applies power roughly downward, that be basically parallel to the plane, axis place of connecting pin 33 and mount

34,35 to the diapire 4 of hammer 9.Although apply this power to hammer, prevent to hammer into shape 9 by upright link member 30 and move downward towards base portion and framework 3, this link member 30 is connected between hammer and the framework.Link member remains in its stand up position by the rod spring 40 of the transverse movement of opposing connecting pin 33 and the link stopper portions 15 of hammer 9.

When handle 10 by further when base portion 2 promotes, hammer spring 20 is further compressed, thereby applies the downward force of increase to hammer 9, this hammer 9 is stoped by upright link member 30.Finally, as shown in figure 10, in the precalculated position of handle 10, trigger 12 contacts with the trigger receptacle 36 of the upper-part of link member 30.At this moment, make handle 10 motion surpass this precalculated position only need be on handle 10 the minimum downward force of additional effect, connecting pin 33 is pushed away backward the plane at

mount pin

34,35 places with the bias effect that overcomes rod spring 40.When this situation took place, link member 30 no longer bore hammer spring 20 and is being applied to downward force on the hammer 9, and link member 30 is folded into L shaped when reducing rapidly under the effect of compressed hammer spring 20 in the front portion of hammer 9.As from Figure 11 and 12 of successive stages that forwarding is shown as seen, the rapid decline of hammer 9 make the front portion that is installed in hammer 9 blade 45 from the opening 66 of the front portion of box 55 by force ejection go out staple.As mentioned with reference to as described in Fig. 2, be pushed the staple that ejects and pierce through the article that to bind then and these article are fastened to together.

Therefore, handle 10 is moved downward make that hammer spring 20 is compressed continuously, up to reaching the trigger point, in this trigger point, the trigger receptacle 36 of trigger 12 contact link members 30.So a little further downward motion of handle 10 can cause connecting pin 33 to move backward.This causes hammering into shape 9 then and descends under the effect of the hammer spring 20 of compression, cause simultaneously link member 30 folding and subsequently staple discharge.

Trigger 12 contact trigger receptacles 36 when handle 10 is in the precalculated position, therefore can understand, because in case reach the compression that hammer spring in trigger point will bear specified rate, so the quantity that are released the energy of storage in the hour hammer spring 29 at hammer 9 can be determined in advance.Therefore, can utilize identical bookbinding power with staple from stapler 1 reliably ejection go out.

When article were bound, the user only needs their hand is removed from handle 10 just can the downward power of release action on stapler.So handle 10 moves upward under the effect of compressed handle spring 50 and leaves base portion 2.When handle moved upward, the upper arm 21 of hammer spring 20 also moved upward, and arrives the position shown in Figure 13 by such motion.In the position of Figure 13, the adjacent hammer spring retainer 6 of upper arm 21 contacts of hammer spring 20, and the angle that upper arm 21 and underarm 22 comprised of hammer spring 20 is once more for α °.This separation angle is kept, and returns its prepackage booking up to handle 10 and puts, and indicate with " A " in Figure 14 this position.

As shown in figure 13, rod spring 40 applies continuous bias voltage forward to link member 30.This makes link stopper portions 15 ride up in the inclination and front surface of lower member 32 of link member 30, cause hammering into shape 9 risings simultaneously and the axis of connecting pin 33 and mount

34,35 is alignd in same vertical plane, return to the structure shown in Fig. 3 up to hammer 9 and link member 30.In a single day therefore, should be understood that and remove downward pressure from handle 10 that then stapler 1 simply and automatically returns to its " static " position.

As shown in figure 15, being slidingly installed of box 55 makes box 55 to be pulled out forward with replacing from framework 3 to be pushed the staple that ejects.This function is by following true the realization, and promptly stapler 1 uses the opposing element of the form that is link member 30 rather than the blade 45 at the front surface place that use is installed in box 55, stops that hammer 9 and blade 45 descend, and stop up to this to be released.Therefore, box 55 can be drawn forward to change staple, this means that the replacing of staple is simple and convenient, and does not need to carry out the relative rotation of base portion and framework.

Figure 16 and 17 illustrates second embodiment of the present invention, and wherein the identical staple ejection mechanism of describing with reference to first embodiment as mentioned is applied to compact more stapler.Because the structure of stapler mechanism is identical,, and will no longer further specify here it so similarly parts are indicated with similar label.

Embodiment mentioned above only is exemplary, rather than restriction the present invention.The conspicuous embodiment of selecting still falls within the scope of the invention when reading is above described.

Claims

1, a kind of stapler, this stapler comprises:

(a) be used for the actuator of the power that applies to stapler by the user;

(c) energy storage elements, this energy storage elements are arranged when by described actuator stored energy when stapler applies power, and are arranged to discharge described energy by making described staple ejector move to the second place from described primary importance; And

(d) the opposing element that can between first state and second state, move, under this first state, this opposing element keeps described staple ejector to be in primary importance when applying power by described actuator, and under this second state, this opposing element allows described staple ejector to move to the described second place under the effect of described energy storage elements.

2, according to the stapler of claim 1, wherein, described opposing element is connected between another parts of described staple ejector and described stapler, and described staple ejector can be with respect to this another component movement.

3, according to the stapler of claim 2, wherein, at least one in described another parts of described opposing element and described stapler ejector and described stapler has rotating the connection.

4, according to the stapler of claim 3, wherein, described opposing element around first rotation being rotatably coupled to described staple ejector, and around second rotation to be rotatably coupled to described another parts of described stapler.

5, according to the stapler of claim 4, wherein, described opposing element comprises around the 3rd rotation with interconnective first and second elements of rotating mode.

6, according to the stapler of claim 5, wherein, described opposing element is arranged so that when described opposing element is in described first state, described first, second all is positioned at same substantially plane with the 3rd rotation, and when by described actuator when stapler applies power, described energy storage elements applies the power with the component that is parallel to described plane to described stapler ejector.

7, according to the stapler of claim 6, wherein, described stapler also comprises alignment element, and this alignment element is used to keep described first, second to be in the same substantially plane with the 3rd rotation.

8, according to the stapler of claim 7, wherein, described alignment element comprises deformable resilient member.

9, according to each stapler in the claim 2 to 8, wherein, described another parts of described stapler are the frameworks that are used for installing in movable mode described staple ejector.

10, according to the stapler of claim 9, wherein, described staple ejector is installed on the described framework pivotally.

11, according to the stapler of claim 9 or 10, wherein, described stapler also comprises the staple cartridge that is installed on the described framework.

12, according to the stapler of claim 11, wherein, described staple cartridge slidably is installed on the described framework.

13, according to the stapler of claim 11 or 12, wherein, at least a portion of described staple ejector is arranged to enter described staple cartridge and is gone out staple with ejection therefrom.

14, according to the stapler of claim 13, wherein, described staple ejector comprises blade, and this blade is arranged to enter described staple cartridge and is gone out staple with ejection therefrom.

15, according to the stapler of each claim of front, wherein, described opposing element is given prominence to and is passed the aperture that forms in the described staple ejector.

16, according to the stapler of claim 15, wherein, when described opposing element was in first state, described opposing member abuts limited at least a portion of the periphery in described aperture.

17, according to the stapler of each claim of front, wherein, described opposing element can move between first and second states by means of flip-flop element.

18, according to the stapler of claim 17, wherein, described flip-flop element is connected to described power actuator, when surpassing the precalculated position with the described power actuator movements of box lunch, makes described opposing element move to second state.

19, according to the stapler of each claim of front, wherein, described energy storage elements comprises deformable resilient member.

20, according to the stapler of each claim of front, wherein, described stapler also comprises resetter, and this resetter makes at least a portion of described stapler return to pre-bookbinding state after being arranged in and finishing stapling operation.

21, according to the stapler of claim 20, wherein, described resetter contacts described power actuator so that the power actuator is returned to its pre-bookbinding state.

22, according to the stapler of claim 20 or 21, wherein, described resetter comprises deformable resilient member.