CN102442109A

CN102442109A - Lead self-cutting pencil

Info

Publication number: CN102442109A
Application number: CN2010105082531A
Authority: CN
Inventors: 李世武
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2012-05-09

Abstract

The invention discloses a lead self-cutting pencil. A lead cutting mechanism, a lead feeding mechanism, a lead rotating mechanism and a pressing head for performing a lead cutting action are arranged in the lead self-cutting pencil; two blades which are fixedly connected with the pressing head and are arranged on the lead cutting mechanism are used for performing lead cutting actions relative to a converging point along a guide groove formed on a pencil point by repeatedly pressing and releasing the pressing head for performing the lead cutting action with a finger; a cycle of lead cutting action of the lead is completed by rotating the lead at a certain angle in each time together with the lead rotating mechanism; and the need lead extension length of the lead feeding mechanism in the lead self-cutting pencil is selected by using a button arranged outside a pencil rod. In the invention, the adopted pressing lead cutting way is similar to the action of pencil cutting at a certain inclination angle with a knife and a blade, so that the lead self-cutting pencil is more environmentally-friendly, and the lead cutting work is more rapid, easier and convenient.

Description

A kind of from lead-sharpening pencil

Technical field

The present invention relates to a kind of from cutting the pencil of core, relate in particular to a kind of be built-in with cut core mechanism, pen core feed mechanism and pen core rotating mechanism from lead-sharpening pencil.

Background technology

The pencil of selling in the market mainly divides by following several types, and is a kind of by the common wood compacting or paste the pencil that forms, or the pencil (environment-friendly type of new development) that rolls of newspaper, and pen core does not wait between 1.5～4mm greatly.

A kind of is to be pulsating propelling pencil and the automatic compensation type propelling pencil of 0.5～0.8mm with pen core, and it is to be celebrated with easy writing fast, and its invention is that tool is big to the contribution of society.

A kind of is bullet core formula propelling pencil, and it is to be pre-installed in a kind of fibertip pen headgear of fast changeable (just installing in the factory) to the pen core that general pencil-lead (between diameter 1.5～4mm) is fined away with certain length it is sold on market with several rows of nib.

A kind of is automatic lead-sharpening pencil; Its inner written end is provided with blade stretches out the sandwich mechanism rotation that accompanies pen core through the rotary cylinder that rotates the outside and be provided with, and pins blade with a hand more simultaneously and does not put by press button, continuous so again rotated tube; Pen core is cut while being rotated; When pen core is rotated to assigned address, cut the core action and accomplish, but pen core did not also stretch out outside the tip of the brushstyle of a writing or painting this moment; After decontroling the hand of pinning the blade button, again through the another hand by the press-side that extrudes pen core by going out required pen core length.

The following inventor with the viewpoint of being understood to above several kinds of pencils fraud socially in order to doing an analysis.

The pencil that subsides form is suppressed or accounted for to common wood; Undoubtedly its invention is very huge to the contribution of society; Since its invention, the life of deep affect people's, student, artist, graphical artists, engineer, carpenter; General masses need it, and it has been people's in the eyes of " refreshing pens "; It has been the writing implement that majority be unable to do without; But the shortcoming that it exists also can not be ignored, and has a talk about its advantage earlier, and it can satisfy the people's of different operating requirement drawing; It can be whittled into the effect that needs nib to draw with the user; The student is whittled into the shape that he wants according to the different needs of study, and the artist is holding tiltedly then that pencil is drawn a picture so that the effect of drawing a picture more easily and drawing and wanting, and graphical artists then needs different thickness lines accomplish drawing or the like ...And the sticking pencil of wooden pressure just can differently with user's purpose satisfy need of work, and is also wide because of its application, all is some professional persons' first-selection all the time.Its shortcoming, it uses to such an extent that must cut once pen soon at every turn, generally all uses pocket knife; Pencil sharpener, or electronic penknife and hand-rail type pencil sharpener realize cutting the action of pen; Therefore it all will seek before cutting pen the trouble of cutting the pen or shape tool and cutting the pen at every turn; Also want vacating space to carry or deposit and cut the pen or shape tool, this has also simultaneously also strengthened student's school bag space and weight, and it is one of shortcoming thus.Another shortcoming is that most pencils all is to divide the sticking card of two halves to form with timber; With the present whole world 6,000,000,000 people's populations calculate as on average for each person every year a pencil calculate, just consume 6,000,000,000 pencils so every year, year reduce chiseling with present whole world area of woods; Timber is in short supply relatively; A large amount of uses of paper make to have become not environmental protection so with wooden pencil that this also is its main disadvantage.

Besides pulsating propelling pencil and automatic compensation type propelling pencil, it mainly with plastics or metal shell, spring, pen core, pen core by going out tube, the movable pencil of composition (the pen core diameter is generally between 0.5～0.8); It can exempt the trouble of the core that sharpens a pencil, and when pen core fractures or short, only needs gently once having come out by the pen end pen core; Quick and convenience very, therefore also very environmental protection has reduced a large amount of timber; Be a very invention of rod, but shortcoming is because of the thin reason of pen core fractures easily, and its scope of application is too narrow; Be not very general, its main use object mainly is that the pupil is in the majority, very is not fit to professional person's use; One of reason mainly is the picture drawing, all complies with different gradients when the designer uses pencil, the thickness drawing; Drawing, movable thus pencil is in one of reason of the few usefulness of professional domain.

Besides bullet core formula propelling pencil, it is to fine away general pencil pen core (diameter 1.5～4mm does not wait) and pre-install at the plastic sheath of fast changeable (to have installed in factory) in front, uses up only to change that another is just passable; It is with a plurality of replaceable pullover several rows of sales of one-pen bar on market, though this product uses easily, the cost that uses is too high; Also cause simultaneously a large amount of the losing of the pen cap; Cause very big waste, and very not environmental protection, so this is its deficiency.

Besides the automatic lead-sharpening pencil of another form; Though this type be provided with the function of cutting core from lead-sharpening pencil; But complicated operation and cumbersome; Simultaneously must be with could accomplishing with two hand operateds, if in addition problem be exactly the nib write by blunt what is to be done? To return pen core to cut or cut the front in the pen container again by that section of blunt? So this also is a problem.

So a kind of pencil can be arranged; The writing effect that traditional pencil (wooden pencil) promptly can be arranged does not use timber (environmental protection) again, need not another kind of cut the trouble that the pen or shape tool is cut pen yet; But also have movable pencil concurrently fast by going out pen core; Simultaneously also can self quick sharpening pen core, and simple to operate, and can just can accomplish the release pen core and cut the pencil of the everything of pen core through a hand?

And a kind of of the present invention's proposition just can address this problem from cutting the writing-core type pencil.

Summary of the invention

In order to solve above-mentioned task; The solution that the present invention proposes is: accommodate a pen core feed mechanism, one in a penholder and nib the inside and cut core mechanism and a pen core rotating mechanism; Described pen core feed mechanism is to be provided with in addition on the cored structure principle to make sending of movable pencil to send core mechanism to rotate the driven member of an angle; And send movable pencil the core mode change into having slotted eye and having by the mode of operation of force feed core to stretch out outside the penholder, release required pen core length in just letting manually push by press button by press button from the side of penholder by tail end; The described core mechanism of cutting includes the gathering sill composition of cutting core blade, press head, hollow pipe, spring and being located at nib; The described core mechanism one of which end of cutting is hinged with and cuts two blades wiping away pen core; And slidably be nested in the gathering sill of said nib; One end is useful on the press head of cutting the core action and stretches out and is higher than the outer part of penholder tail end; Cut between blade and the press head of core and be hinged and be connected by hollow pipe; Hollow pipe is useful on the spring that blade when cutting the core action, hollow pipe and press head return near an end outer race of cutting the core blade, and the described core mechanism of cutting makes two blades being hinged with an end of hollow pipe stretch out with the direction of motion that converges at a bit mutually and do and cut the core action along described gathering sill through finger or pressed by external force press head; Described pen core rotating mechanism includes a driving link and a driven member; And be fixed on respectively on the inwall of an end and said hollow pipe one end of described pen core feed mechanism; The effect of pen core rotating mechanism be when described press head done by external force or finger cut the pushing and unclamp of core action for the first time after; Under the effect of spring force, force and cut core blade, hollow pipe, press head and return; And make the driving link that is connected mutually with hollow pipe and act on mutually with driven member that the pen core feed mechanism is connected mutually and to force the pen core feed mechanism that accompanies pen core with action of an angle rotation, cut two positions that blade stretches out that core moves so that turn to next to the another side of the pen core that is not cut.

To further specify below from putting into pen core and cut the operating process of core action to completion:

Hand arrest from lead-sharpening pencil and with thumb press firmly be located near place, penholder tail end side with longitudinal sliding motion by press button; The another hand was held a pen core (length was that 50～100mm is good this moment; Explain at this pen core with two mm dias) slowly push until being pushed into fully from the pen core entrance hole of nib and flush or reserve the length that next cuts the required pen core of core action with pen core entrance hole termination; Push this moment by the thumb of press button and decontrol; Reset under the effect of spring by press button, the pen core feed mechanism clamps pen core and non-telescoping or mobile, accomplishes packing into of pen core.What explain once more at this is that the operating principle of sending core mechanism on the method for operating of described pen core feed mechanism and the movable pencil that generally adopts at present is the same; Different is traditional movable pencil is by going out being provided in a side of on the tail end of penholder by press button of pen core; And of the present invention by going out being provided in a side of side near penholder tail end place by press button and having longitudinally on the slotted eye of pen core, the press head of penholder tail end then is the operation press head that is used to cut the pen core action.Two cuttves before needs are cut the action of wiping away pen core, earlier releasing next step to pen core converge on the position of any when stretching out mutually; The too short pen core of cutting out so of the length of stretching out like pen core is point or do not cut inadequately; Oversize then can the waste surpasses the pen core that two blades converge at that joint of any mutually; Therefore should be with according to the required length of releasing pen core; The present invention also proposes to knowing fast whether pen core just reaches on the position that two blades converge mutually; Can be earlier pen core be withdrawn into that termination with the pen core entrance hole flushes and then by the pen core of certain number of times by press button, as just stretching out on the position that two blades converge mutually by pen core after four times, therefore just can draw pen core just reaches assigned address.Thumb through the hand that holds a pen when pen core is pushed out into the desired position or forefinger make by the press head that is pressed on the penholder tail end and are attached thereto moving two and cut the core blade stretches out the cutting pen core along the gathering sill that is located on the written both sides with the direction that converges at a bit mutually action; When the finger of pushing press head unclamps, return under press head, hollow pipe and two effects of blade at spring; When hollow pipe returns, act on mutually simultaneously in this and to force the angle of pen core feed mechanism rotation that accompanies pen core through the driving link on the pen core rotating mechanism that is fixed with and driven member; Cutting the core action in order to pushing of next round prepares; Just can accomplish the action of cutting pen core through the repeated presses press head with this; To push six to eight times is the best, certainly this should look blade sharpness and pen core rotating mechanism anglec of rotation size and decide.

Description of drawings

When joint accompanying drawing, description of drawings, summary of the invention, summary, background technology, technical field and corresponding title are read; Independent advantages of the present invention to those skilled in the art will become clearly, and following openly generally can be through obtaining best understanding with reference to the specific embodiment that provides.Identical Reference numeral in the different accompanying drawings is represented the element that is equal on components identical or the function, and summary of the invention and original paper in the summary do not have tape label, yet relate to corresponding to the specific embodiment and relevant disclosed element.

Fig. 1 surveys view according to a kind of isometric axis from lead-sharpening pencil disclosed by the invention, a kind ofly shown in it is not making the state of any action from lead-sharpening pencil.

Fig. 2 is that the decomposition isometric axis of Fig. 1 is surveyed view, and the broken away view of nib 2 wherein also is shown.

Fig. 3 illustrate by press button 14 be pressed state that do to release pen core with cut the core action not the axle that waits of the state of action survey a view.

Fig. 4 illustrates the press head 3 that is used to cut core and is pressed and has two blades 6 to stretch out and cut the core action, and pen core is shown releases by what press button 14 was back to first next state and wait axle survey view.

Fig. 5 be Fig. 1 hidden written 2 shells, penholder 1 and illustrate press head 3 and hollow pipe 25 phantom etc. axle survey view.

Fig. 6 be Fig. 3 hidden written 2 shells, penholder 1 and illustrate press head 3 and hollow pipe 25 phantom etc. axle survey view.

Fig. 7 is that Fig. 4 has hidden written 2 shells, penholder 1, and illustrate press head 3 and hollow pipe 25 phantom wait axle survey view and spring 8 to be compressed the time state.

Fig. 8 is the written cut-away view that axle such as Fig. 1 amplification of having hidden written 2 shells, penholder 1 and part entity is surveyed view.

Fig. 9 is the written cut-away view that axle such as Fig. 3 amplification of having hidden written 2 shells, penholder 1 and part entity is surveyed view; Two stiffeners 19 of the relative branch that is connected mutually with written 2 bodies wherein also are shown; Wherein there is a quilt to cover and can't see, and inconsistent with the edge of pen core bail wire 27.

Figure 10 is the part nib structure chart that axle such as Fig. 4 amplification of having hidden penholder 1, gathering sill 5 and part entity is surveyed view, and 21 the structure of buckleing that is used for that nib 2 and penholder 1 be interlocked wherein also is shown.

Figure 11 is the written cut-away view that axle such as Fig. 4,10 amplification of having hidden written 2 shells, penholder 1 and part entity is surveyed view.

Figure 12 is that the part of pen core feed mechanism 9 is decomposed the axle of analysing and observe with part that waits and surveyed a view, and the state that the joint of the pen core tube 9A that holds pen core is back-outed wherein also is shown.

Figure 13 is the pen core whirligig of Fig. 2 exploded view and surveys view by axles such as the part amplifications of press button 14.

Figure 14 is that the axles such as amplification of the another kind of embodiment of Figure 13 pen core whirligig are surveyed view.

Figure 15 is that the part of a kind of another embodiment of the gathering sill 5 on the nib 2 of lead-sharpening pencil is analysed and observe the cut-away view that the axles such as part amplification that decompose with part are surveyed view; It illustrates gathering sill 5 and is arranged on written inwall; The minor diameter pen point casing 40 that is placed in written 2 internal diameters also is shown; It is illustrated to decompose and moves out a position, minor diameter pen point casing 40 bilateral symmetry places wherein also is shown has slotted eye 30.

Figure 16 is that the phantom of a kind of another embodiment of the gathering sill 5 on the nib on the lead-sharpening pencil 2 waits axle to survey a view with local the amplification, and it is removing minor diameter nib 40 on the architecture basics shown in Figure 15, and is provided with flange 41 at gathering sill 5 edges.

Figure 17 is that the axles such as part amplification that Figure 16 has hidden the part entity structure are surveyed view, and it illustrates the shape of gathering sill 5 and flange 41.

Label declaration

A pen? 2 nib? 3 pressing head? 4 refills? 5 blades extending guide groove? Six core cutting blade? 7 refills export Kong? Eight spring? 9 refills feeding mechanism? 9A refill tube? 10 core tube clamp or release activity? 11 refills rotating mechanism follower? 12 rotating sleeve? 13 thrust ring? 14 push buttons? 15 refills rotating mechanism driving member? 15A concave spherical beads or 16 slots ? 17 there is space for the elastic sheet stretched slots? 18 bearings? 19 reinforcing strip? 20 buckle mouth? 21 buckle? 22 blades connected sets? 22A U-shaped mouth? 23 connecting rod? 24 small diameter hollow tube? 25 large diameter hollow tube? 26 sandwich flap? 27 refills clamping collar? 28 off? 29 ears? 30 blade slots extending? 31 guide flange? 32 nib Fit tongue? 33 strut? 34 thread ? 35 refills launched spring? 36 screw holes? 37 screws? 38 straight groove? 39 spiral grooves? 40 small-diameter tip inner sleeve? 41 guide groove flange

Below three look after accompanying drawing and specify the specific embodiment of the present invention.

The specific embodiment

Fig. 1 surveys view according to a kind of isometric axis from the lead-sharpening pencil contour structures disclosed by the invention; It includes penholder 1 nib 2 of phase fit with it, is located at the press head 3 that penholder 1 tail end place is used to cut the core action, penholder 1 near position, tail end place be used for by go out pen core 4 by press button 14; Be used for by press button 14 slotted eye 16 in axial sliding; What be located at the written symmetrical distribution in 2 positions is used to derive two gathering sills 5 cutting core blade 6, is used to put into pen core and the pen core leadout hole 7 of deriving pen core, be used to fasten nib 2 is nested with penholder 1 and buckle 21; With pen core 4, wherein a kind ofly do not making the state of any action shown in the figure from lead-sharpening pencil.

Fig. 2 is that the decomposition isometric axis of Fig. 1 is surveyed view; The broken away view of nib 2 wherein also is shown; Shown in the figure from the decomposition view of each parts of lead-sharpening pencil; It illustrates slidably and the pen core feed mechanism 9 in the minor diameter hollow pipe 24 that is placed in that rotates, and the knockout operation principle of the leading portion part of described pen core feed mechanism 9 is the same with the knockout mode of traditional movable pencil, later half part then include release pen core 4 by press button 14; Can be around the screw hole 36 on the turning set 12 of pen core tube 9A external diameter rotation by press button 14 through screw 37 stubborn being fixed in; The two ends of described turning set 12 also have thrust ring 13, and described thrust ring 13 immovable being fixed on the pen core tube 9A are fixed with the driven member 11 of the pen core rotating mechanism that is used to rotate pen core at the tail end of pen core tube 9A; Described driven member 11 is cylindrical shape; Have on the cylinder from shallow to deep straight connected in star 38 and by being deep to shallow helical groove 39, wherein have at least on the cylinder two groups above and increase progressively the straight connected in star 38 and helical groove 39 that symmetrical five equilibrium distributes with even number, increase progressively like the mode of two groups, four groups, six groups or eight groups.

The driving link 15 that the pen core rotating mechanism that acts on mutually with above-described driven member 11 is arranged with the tail end of the hollow pipe 24 of the minor diameter of pen core feed mechanism 9 fits shown in Fig. 2; Described driving link is connected on the tail end of minor diameter hollow pipe 24 by the flexure strip 15 of two symmetrical distributions; The end of flexure strip 15 is inlaid with ball 15A; It should be understood that described flexure strip 15 can be to be made by resilient sheet metal or resilient plastics, as inlaying (Figure 13 illustrates part label and local zoomed-in view) to hollow pipe 24 punch forming together and the groove 15A that goes out semicircle to substitute with ball with metal material.

The embodiment of another kind of pen core rotating mechanism is shown like Figure 14 in another embodiment; Tail end at hollow pipe 24 has driving link 15 described driving links 15 to be circular; Being circular driving link 15 can make and be placed in the hollow pipe 24 or be fixed on the tail end of hollow pipe 24; The inwall of driving link 15 have from shallow to deep straight connected in star 38 and by being deep to shallow helical groove 39; Wherein have at least on the inwall of driving link 15 two groups above and increase progressively the straight connected in star 38 and helical groove 39 that symmetrical five equilibrium distributes with even number, increase progressively like the mode of two groups, four groups, six groups or eight groups.

The driven member 11 and pole 33 of the pen core rotating mechanism that is fixed on pen core tube 9A tail end also are shown in Figure 14; Described driven member is by two flexure strips, 11 symmetrical branches; The driven member of described pen core rotating mechanism and the structure of above-described another embodiment are the same only exchanging driving link 11 and driven member 15, at this not in repeat specification.Though the rotation mode of two kinds of pen cores is shown; But the mode that it should be understood that the pen core rotation can develop out different forms and come out; As making the driven member 11 of pen core tube 9A tail end on the bar of T word; There is ball at the two ends of T bar, and the center of T word bar is empty and spring is housed, and the ball through two ends acts on (drawings attached does not illustrate) mutually with the straight connected in star 38 and the helical groove 39 of driving link; Or adopt the push type ball pen by the internal structure principle that goes out pen core; But ball pen is that pen core just rotates when depressing; Of the present invention then is just to let pen core 4 rotations when unclamping press head 3 back return course; So that let blade 6 and pen core 4 not hinder mutually, so can to carry out reverse design also be feasible (drawings attached does not illustrate) the rotational structure principle of pushing in the ball pen.

Fig. 2 and 8,9,10,11 shows two of being fixed on minor diameter hollow pipe 24 and blade adapter sleeve 22 1 ends and cuts core blade 6; Described two blades 6 have connecting rod 23, pin 28 to be hinged with the ear 29 that is fixed on the blade adapter sleeve 22 of hollow pipe 24 ends respectively; The width of the root that described two blades 6 and connecting rod 23 are hinged is narrower and be narrower than the width that nib 2 has slotted eye 30 than the edge of a knife width of blade 6, in just let the root of blade 6 slotted eye 30 in, slide and make blade 6 along the outer outline of the nib that is tapering 2 be covered in slotted eye 30 on blade 6 on gathering sill 5 cut pen core 4 with the direction of motion that converges a bit mutually.

At the blade adapter sleeve 22 that is used to be connected blade 6 shown in 2 and 8,9,10,11 figure; Described blade adapter sleeve 22 has the mouth that is the U type; Make the edge mouth of the blade adapter sleeve 22 that is connected with it not inconsistent so that let when hollow pipe 24 travels longitudinally when cutting the core action with the stiffener 19 that is fixed on written 2 inwalls; The effect of described stiffener 19 is that the intensity of strengthening written 2 bodies also is used to prop up the pen core clamping collar 27 on the pen core feed mechanism 9 outward; In just letting pen core feed mechanism 9 can do knockout or change core action, and prevent when cutting the core action, to let the pen core feed mechanism 9 that accompanies pen core 4 move forward together; What described blade adapter sleeve 22 can cannot not made rotatablely or moved is connected with hollow pipe 24, or makes an integral body to hollow stem 24 and adapter sleeve 22; Make hollow pipe 24 and blade adapter sleeve 22 rotatable in another embodiment but can not axially movable mode; What need explain at this is the mode that is connected with hollow pipe 24 as adopting that described blade adapter sleeve 22 cannot not make rotatablely or move, and nib 2 must be divided the fit mutually of outgoing direction so that let the slotted eye 16 of hollow pipe 24,25 and the slotted eye 16 on the penholder 1 align with penholder 1 so; As making hollow pipe 24 and blade adapter sleeve 22 rotatable but can not axially movable mode, nib 2 and penholder 1 can or be regardless of the stubborn of direction with the mode of spiral and close or fit so.

The structure of nib 2 all is shown among Fig. 1,2,3,4,5,6,7,8,9,10,11 or amplifies isometric axis survey view; The leadout hole of pen core shown in the figure 7 is rotating to be placed on the hole of bearing 18; Also be fixed with thrust ring 13 on the pen core leadout hole 7; The outer rim of described bearing 18 is through be connected with written 2 bodies mutually, and described bearing 18 main effects are reduced to minimum resistance when being to let pen core feed mechanism 9 rotations that accompany pen core 4, and pen core 4 can have certain coefficient of friction with pen core leadout hole 7; So that pen core 4 can not slipped out out too easily when going out pen core, certainly as the mode that is not provided with bearing also be fine.

Fig. 2,2 the end of nib shown in 10 and penholder 1 be the structure of fit mutually; The embodiment that the flange 31 of tongue 32, button mouth 20, button 21 and direction guiding is arranged among the figure; In another embodiment tongue 32 have external screw thread and penholder 1 have internal thread each other to twist to close, but prerequisite is above-describedly to make hollow pipe 24 and adapter sleeve 22 rotatable but can not axially movable mode be (drawings attached does not illustrate) under the prerequisite.

The part that another embodiment of nib 2 and gathering sill 5 structures is shown at Figure 15 is decomposed, is moved and the amplification isometric axis of cutaway view is surveyed view; Described this structure is not from seeing that in appearance the gathering sill protrusion is on the outline of nib; It is through doing the shell wall of nib 2 thick and milling out symmetrical gathering sill 5 at written inwall; And be useful on and be enclosed within cover 40 in the minor diameter nib of nib in 2; Described minor diameter nib bilateral symmetry place has slotted eye 30; The width of described slotted eye 30 openings is narrower and wideer than the height of connecting rod 23 than the width of the edge of a knife of blade 6, in the limited field that just lets blade 6 between gathering sill and slotted eye 30, slide, with this major advantage that designs be the assembling easily not only attractive in appearance not only of written 2 outward appearances with but also disassembled replacing or sharpen blade 6.

Figure 16, the 17th, another embodiment of nib 2 and gathering sill structure; The structure of described Figure 16 is through saving cover 40 in the above the minor diameter nib of Figure 15 and being substituted by flange 41; Slide in the scope of gathering sill 5 with restriction blade 6; Described structure can be written 2 introspections and goes out certain space, but has also increased the difficulty of processing and assembling.

In the production of reality in order to adapt to the gradient that different crowd uses pen core to fine away, can be making different angle production between blade 6 and the pen core 4.

Fig. 2,5,6,7 illustrates and makes the hollow pipe 24 of minor diameter when being used to cut the core action and spring 8 that be connected the with it large diameter hollow pipe 25, press head 3, the blade 6 that are nested return; On the end that the hollow pipe 24 that described spring 8 is placed in minor diameter and adapter sleeve 22 are connected; One end of described spring 8 is through inconsistent with an end of the inconsistent end in edge of nib 2 tongue 32 and large-diameter hollow pipe 25; Wherein said press head 3 makes an integral body with large-diameter hollow pipe 25, the mode (not drawings attached) that is divided into press head 3 and large-diameter hollow pipe 25 two parts and has screw thread to be screwed in another embodiment.

Be useful on the slotted eye 16 that slides by press button 14 on penholder shown in Fig. 21, large-diameter hollow pipe 25, the minor diameter hollow pipe 24; Wherein the opening length of the slotted eye 16 in the penholder 1 is shorter than the slotted eye 16 of large-diameter hollow pipe 25 and minor diameter hollow pipe 24, when just letting when cutting the core action

hollow pipe

24,25, do not prop up by press button 14 in lengthwise movement on.

For a person skilled in the art, should be understood that the foregoing description only be have no as an example limited, do not deviate from limit like accessory claim the basis of the scope of the invention on, can carry out variations and modifications to the present invention.

Claims

1. one kind from lead-sharpening pencil, comprising:

A penholder;

A nib, an end of removable cover that closes of its end and penholder, symmetrical place, written both sides has and is the gathering sill that converges at a bit, and it is used to let cuts the core blade and stretches out and lead;

A pen core feed mechanism, it is placed in the center in the penholder, and have stretch out penholder outer by press button so that through manually coming by going out required pen core length; With

Cut core mechanism for one; The one of which end is hinged with cuts two blades wiping away pen core; And slidably be nested in the gathering sill of said nib; One end is useful on to operate the press head of cutting the core action and stretch out and is higher than the outer part of penholder one end; Cut between blade and the press head of core and be hinged and be connected by hollow pipe, wherein hollow pipe is useful on the spring that blade when cutting the core action, hollow pipe and press head return near an end outer race of cutting the core blade, and the described core mechanism of cutting makes two blades that are hinged with hollow pipe one end stretch out to do with the direction of motion that converges at a bit mutually along described gathering sill to cut the core action through finger or pressed by external force press head;

A pen core rotating mechanism; It has a driving link and a driven member respectively; And be fixed on respectively on the inwall of an end and hollow pipe one end of described pen core feed mechanism; The pen core rotating mechanism be used for when described press head done by external force or finger cut the pushing of core action for the first time after; And under the effect of spring force, force and cut core blade, hollow pipe, press head and return, and make the driving link that is connected mutually with hollow pipe and act on mutually with driven member that the pen core feed mechanism is connected mutually and force the pen core feed mechanism that accompanies pen core with action of an angle rotation.

2. according to claim 1 a kind of from lead-sharpening pencil, a termination near caudal end part of said penholder has slotted eye, is used for stretching out and an end has the mouth of buckleing that is nested and fastens with nib by press button of said pen core feed mechanism.

3. according to claim 1 a kind of from lead-sharpening pencil, a said written end has the guide rib of buckleing and be used for confirming direction and position that is nested with penholder.

4. according to claim 1 a kind of from lead-sharpening pencil; Also include the rectangle that the described slotted eye of slotted eye that is used to stretch out blade is narrow length in the said nib; The A/F of said slotted eye is narrower than the described width of cutting the core blade, and wideer than the width that is used for the connecting rod between hinged blade and the hollow pipe.

5. according to claim 1 a kind of from lead-sharpening pencil, the gathering sill described in the said nib is fixed on the described slotted eye to be the angle that converges at a bit mutually and to be fixed on the tapered nib and to cover.

6. according to claim 1 a kind of from lead-sharpening pencil; Gathering sill described in the said nib and written housing make an integral body; Described gathering sill is opened in the degree of depth of written inner walls symmetry both sides and fluting thinner than the thickness of written shell wall; And it is thick wideer than the width of blade with width gathering sill than the thickness of blade; Also be with in the wherein said nib less than cover in the small size nib of written internal diameter, the cover bilateral symmetry has slotted eye in the described nib, and the A/F of described slotted eye is narrower than blade width; And wideer than the width that is used for the connecting rod between hinged blade and the hollow pipe, slide in the cell body scope of gathering sill for use in the restriction blade.

7. according to claim 1 a kind of from lead-sharpening pencil; Gathering sill described in the said nib and written housing make an integral body; Described gathering sill is opened in the degree of depth of written inner walls symmetry both sides and fluting thinner than the thickness of written shell wall; And thicker than the thickness of blade, wherein the width of gathering sill is wideer than the width of blade, and described gathering sill also is useful on the flange that the restriction blade slides in gathering sill.

8. according to claim 1 a kind of from lead-sharpening pencil; Said nib also includes and is used for pen core leadout hole and the bearing that pen core stretches out; Described pen core leadout hole is rotating to be placed in the described dead eye; And have thrust ring to be fixed on the pen core leadout hole, and moving axially with restriction pen core leadout hole, wherein said bearing outer rim is through be connected with written body mutually.

9. according to claim 1 a kind of from lead-sharpening pencil; What being used to described in the described pen core feed mechanism released the pen core Len req is fixed on the turning set that rotates on can the tube bar around the pen core tube that is used to hold pen core on the pen core feed mechanism by press button through screw; The two ends of described turning set also include and are used to limit the thrust ring that it rotates in the original place, and described thrust ring is immovable to be connected with pen tube rod mutually.

10. according to claim 1 a kind of from lead-sharpening pencil; Describedly cut two blades described in the core mechanism and be hinged by the ear of connecting rod, the end of pin through hinged mode and hollow pipe; The width of the knife bar root of wherein said blade is narrower than the width of 4 described slotted eyes, slides in slotted eye with convenient.

11. it is according to claim 1 a kind of from lead-sharpening pencil; Described cutting between the end of cutting core blade and hollow pipe described in the core mechanism also includes the blade adapter sleeve; Described blade adapter sleeve one end is useful on the ear that connects blade, and an end turns with an end of hollow pipe but can not axially movablely be connected mutually.

12. it is according to claim 1 a kind of from lead-sharpening pencil; Describedly cut the hollow pipe described in the core mechanism by the hollow pipe of minor diameter and large diameter hollow pipe fit mutually; And non-rotatable or mobile being connected mutually; The external diameter of the hollow pipe of described minor diameter and large diameter hollow pipe internal diameter just can be closely fit mutually, the hollow pipe external diameter cover of wherein said minor diameter is useful on the spring that blade, hollow pipe, press head return when cutting the core action.

13. according to claim 1,12 described a kind of from lead-sharpening pencil; The hollow pipe of described minor diameter and large diameter hollow pipe also include be used for described can be by press button along the slotted eye of penholder axially-movable; The opening length of described slotted eye is than the long size of the slotted eye length on the 2 described penholders, and wherein said large diameter hollow pipe tail end is fixed with press head.

14. according to claim 1,12 described a kind of from lead-sharpening pencil; The tail end of the hollow pipe of the minor diameter described in the described pen core rotating mechanism is fixed with and is used to order about the driving link that the pen core feed mechanism that accompanies pen core rotates an angle; Described driving link is made by two symmetrical and resilient flexure strips, and the end of wherein said two flexure strips is inlaid with ball or is the concave ball shape toward interior direction.

15. according to claim 1,12 described a kind of from lead-sharpening pencil; The tail end of the hollow pipe of the minor diameter described in the described pen core rotating mechanism is fixed with and is used to order about the driving link that the pen core feed mechanism that accompanies pen core rotates an angle; Described driving link is made by annulus; The inwall of described annulus have from shallow to deep straight connected in star and by being deep to shallow helical groove, wherein said straight connected in star and helical groove have at least two groups of above even numbers to increase progressively and five equilibrium is symmetrically distributed on the internal diameter of annulus.

16. according to claim 1,9 described a kind of from lead-sharpening pencil; The tail end that being used to described in the described pen core rotating mechanism held the pen core tube of pen core is fixed with the driven member that forces the pen core feed mechanism rotation that accompanies pen core; Described driven member by be equal portions on the cylindrical bar be distributed with from shallow to deep straight connected in star and by being deep to shallow helical groove, wherein said straight connected in star and helical groove have at least two groups of above even numbers to increase progressively and five equilibrium is symmetrically distributed on the cylindrical external diameter.

17. according to claim 1,9 described a kind of from lead-sharpening pencil; The tail end that being used to described in the described pen core rotating mechanism held the pen core tube of pen core is fixed with the driven member that forces the pen core feed mechanism rotation that accompanies pen core; Described driven member is made by two symmetrical and resilient flexure strips, and the end of wherein said two flexure strips is inlaid with ball or is the concave ball shape of direction outward.