CN2207939Y

CN2207939Y - Accurate changing and recovery segmented writing-core pencil

Info

Publication number: CN2207939Y
Application number: CN 94248244
Authority: CN
Inventors: 郭俊良
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-26
Filing date: 1994-12-26
Publication date: 1995-09-20
Anticipated expiration: 2004-12-26

Abstract

The utility model relates to an accurate changing and recovery segmented writing-core pencil, which is provided with a plurality of sections of the precutting pencil cores and two sections of joining inner tubes which make the reciprocating motion in an outer tube; the lower end of the upper inner tube is clamped at the combined part at the upper end of the lower inner tube with clamping points and splits; a spring is sheathed outside the lower inner tube, and two holes at the connecting part of the outer tube are respectively connected with arc-shaped spring sheet clamping blocks; the inner tube is pressed to make the spring sheet have a concave part hook head which moves outwards from the lower passage of the outer tube into the penetrating groove channel of the inner tube; the new pencil core is entered to eliminate the pencil core or the original pencil core is recovered, and the spring sheet clamp block is provided with an outward bulging at the opposite point of the inner tube whose inward bulging is blocked; the inner tube can not be sprung out, and the compressed spring sheet is clamped at the horizontal strip of the outer tube with triangle blocks; the upper end of the inner tube is covered by a pencil wiping holder or a pen cap and the inner tube is arranged at the upper end of the movable passage which is clamped on the outer tube.

Description

Accurate changing and recovery segmented writing-core pencil

The utility model is a kind of automatic pen free of shapening of relevant what, a tool of particularly relevant a kind of accurate replacing of what and withdrawal merogenesis pen core.

The tradition extensible pencil comprises that the shaft of a writing brush of both ends open and number joint are embedded the support seat of cutting pen core in advance in advance.To count joint pen core support seat and insert the shaft of a writing brush successively, borrow joint pen core is supported the continuous promotion of seat, will descend the pen core of cutting in advance of joint to release for writing most.Must take shaft of a writing brush volume partly by the plastic pen core support of what seat, make the shaft of a writing brush store the quantity of cutting pen core in advance and reduce relatively; As lose a joint pen core support seat and will make the function of this kind tool forfeiture knockout and can't use, quite unfortunate.

The design people once applied for a kind ofly exempting from automatically to cut and the writing-drawing pen of recoverable pen core, utilize that the outer tube lower end is one-body molded to have an inside elasticity hitcher that dangles, be provided with the V-type groove between this hitcher and outer tube, be provided with in the slide what outer tube slotted eye, the gib head that makes the slide downslide promote the elasticity hitcher withdraws from interior pipe, this kind tool must remove to drive slide with the thumb move mode, be not easy custom during use, outer tube is very inconvenient on making again, because of the gap length of the V-type groove of outer tube is not easy control, defective products is a lot of in the mill, also not durable use, and slide only is the loose fit state, pointed lower end is the friction wear of anti-permanent use not also, can damage to some extent eventually, and these all have influence on its actual serviceability, and stress is concentrated in some specified point during because of use, so, allow the outer tube bottom break easily, therefore, the design people is positive, and improvement design goes out the utility model, to overcome aforementioned numerous shortcoming.

The purpose of this utility model overcomes the shortcoming of prior art at what, and a kind of accurate replacing is provided and regains a tool of merogenesis pen core, make it make the shell fragment that has the special construction design as arcuation with high-tension material, with the action as seesaw, pipe connects conduit in the turnover, finish the receipts core, advance core and the action and the function of changing core; Make in it pipe be divided into two sections and insert behind the outer tube fixed engagement easily in regular turn, can reach two fixing points and disperse to meet with stresses, guarantee the stationarity of outer tube shell fragment; It is whole to reaching the function that engages on same straight line that it is had between inner and outer pipes, can avoid rocking; Pipe flies out in being such that it will prevent, and can effectively prolong the service life of a tool, and makes the whole easy what manufacturing of Zhi Bigeng, can provide the consumer better with more practical more cheap product.

The purpose of this utility model is realized by following technical scheme.

A tool of a kind of accurate replacing and withdrawal merogenesis pen core, it comprises:

One outer tube, taper constricting tube wall top in lower end extends axially and is provided with a upper channel, and the bottom is the opening of diameter reduction;

Pipe is established what outer tube inside in one, and this outer tube of what is made axially reciprocating relatively; The lower end has several wedge shape protrusions, and inner face forms the knockout hole that dwindles internal diameter; The relative what upper channel of pipe place is provided with by the bottom and upwards extends to the middle through slot road of locating of upper channel and non-through conduit short above the perforation conduit and connect the weak point conduit that conduit is tossed about in being somebody's turn to do;

Number joint have first columnar portion and Lower Half by the tip of fining away in advance cut pen core in advance, this number joint pen core place in regular turn what should interior pipe in;

One spring under the pipe junction surface in neck and this outer tube lower end between the upper end of several strip edge clippings of constricting tube wall, makes this interior tubular axis to mobile in the cover what;

Its feature is at what:

This outer tube upper channel top one is provided with on one hole and hole once than light wall pipe wall connecting portion; Outer tube upper channel below is provided with a lower channel; Upper and lower interchannel is the horizontal stripe of a light wall pipe wall;

Should be divided into interior the pipe and interior down the pipe by interior pipe, lower end of interior pipe is provided with a pair of breach and a pair of block chalaza on this, should go up interior pipe lower end formation one round pointed end; The pipe upper end is provided with the big external diameter junction surface that interior pipe lower end on this is gone in clamping in this time, is provided with a pair of conjugate foramen that allows this that block chalaza is snapped on this junction surface;

One shell fragment, body is a curved arc shape, the body upper end is provided with upper and lower fixture block towards this outer tube direction, this is provided with outstanding ring edge to fixture block, with this last hole and following hole that fixture block is fixed this connecting portion of what, have a gib head inwardly in the body lower end of this shell fragment, the upper surface of this gib head and lower surface all are oblique level and smooth cambered surfaces, this gib head enters to manage in this by this lower channel and connects in the conduit, extends to utilize one section pen core in this gib head tip slightly; This elastic sheet body lower end and this outer tube lower channel bottom surface keep appropriate gap; Be provided with several protruding band in this elastic sheet body outer surface; The place, below is provided with the corner block that this shell fragment is fixed in a blocking that cooperates this horizontal stripe when writing in the body of this shell fragment.

When desire is regained used pen core, push this shell fragment band place, this shell fragment slightly is out of shape evens up, allow this shell fragment be subjected to the fixing and restriction of the point action and the upper end fixture block of this horizontal stripe, this shell fragment gib head is drawn out to the inner and outer pipes chien shih by pipe perforation conduit in this should be subjected to blocking by interior pipe, pen core contact object plane, the pen core that has been pushed out this knockout hole is regained what fully and is temporarily prevented motionless inside, interior pipe knockout hole; When removing the active force that applies this shell fragment of what, with the elastic force of this spring will contain pen core should in pipe upwards retract, borrow this outer tube bottom end opening inwardly to push in this pipe bottom and shrink the bottom end opening that is able to by outer tube, make this bottom partly move back to retrieving position; And maintain retired pen core with this gib head it is not fallen down;

When pen core is used by this retrieving position knockout, press down in this and manage by pipe top in this, allow this spring compress, should move down by interior pipe, this shell fragment gib head is extruded to this non-through conduit by this perforation conduit, after downforce is eliminated, when pipe is return in this with this spring force, this descends the pen core top of joint most with this gib head top what, and simultaneously this is descended the tip release of joint pen core interiorly to manage outside the knockout hole most, and change pen core also together, make this descend joint pen core columnar portion slightly to expand outwardly the internal diameter of this knockout hole most to this outer tube bottom end opening of the bigger what of external diameter, force this interior pipe bottom partly can't retract this outer tube, stop the position that the what preparation is write.

The purpose of this utility model also can further be realized by following technical measures.

A tool of aforesaid accurate replacing and withdrawal merogenesis pen core, its cambered surface middle section, lower end of wherein said shell fragment gib head is provided with a recess.

A tool of aforesaid accurate replacing and withdrawal merogenesis pen core, an active tunnel is located to be provided with in the same way with this upper channel in wherein said outer tube upper end, forms a loop portions on the top; The pipe upper end had an extra heavy pipe footpath portion in should going up, be provided with a pen clip in this extra heavy pipe footpath portion one side, this pen clip has several bands with a surface and skewed connecting portion links to each other with extra heavy pipe footpath portion, this connecting portion and extra heavy pipe footpath portion connecting place are roomy shape, and formation inner face end, this inner face end forms acute angle with the tube wall that is somebody's turn to do interior pipe, and this connecting portion holding pipe in these outer tube active tunnel both sides make is not rocked; And manage loop portions in addition and reach the interior clamping structure that pen clip formation prevents that interior pipe from flying out of managing.

A tool of aforesaid accurate replacing and withdrawal merogenesis pen core, the pipe upper end is placed in one and wipes seat junction surface, lower end in wherein said, a Rong Xin hole is upwards offered by the bottom in this junction surface, wipes at this and is provided with an accommodation space for holding one erasing rubber in seat body, and this is wiped seat and moves with interior pipe.

A tool of aforesaid accurate replacing and withdrawal merogenesis pen core, fixture block is provided with just like the inwardly outstanding interior teat of bulk under the wherein said shell fragment, the lower surface blocking firmly is located at the outer teat upper surface that outwards give prominence to just like the square shape non-through conduit of pipe top in this, forms the clamping structure that pipe flies out in preventing.

Before described accurate replacing and regain a tool of merogenesis pen core, wherein said in its outer teat top of pipe offer one up and allow the groove of the interior teat of this fixture block along the suitable length of its slip.

A tool of aforesaid accurate replacing and withdrawal merogenesis pen core, the pipe upper end is equipped with the cap with a sphere dish shape upper surface in wherein said, this cap is provided with this outer tube of part lid what of an outstanding outer tube diameter, the upper surface top is provided with a through hole, this cap such as tubular lid inner face place near to the upper end are provided with the card article that several card whats are somebody's turn to do interior pipe upper end, and this cap inner face lower end is provided with the chamfering of easy turnover.

A tool of aforesaid accurate replacing and withdrawal merogenesis pen core, wherein said interior its lower end inner face of pipe is provided with the fixing bar of several tiny tapers.

By above technical scheme as can be known, the utility model is made the shell fragment that has the special construction design as arcuation with high-tension material, connects conduit with pipe in the turnover of the action as seesaw, finishes and receive core, advances core and the action and the function of changing core.Interior pipe is divided into two sections and inserts behind the outer tube fixed engagement easily in regular turn, and pipe does not produce bending in allowing.The flexure plane upper end is provided with and a pair ofly has ring edge fixture block and divide in the hole of card what outer tube upper channel top connecting portion in the shell fragment, can reach two fixing points and disperse to meet with stresses, and guarantees the stationarity of outer tube to shell fragment.It has between inner and outer pipes whole to reaching the function that engages on same straight line.Be provided with roomy connecting portion between pen clip and interior pipe top and slide, can avoid rocking with place, card what outer tube active tunnel two side.Be provided with big up and small down corner block in the shell fragment inner face, cooperate the horizontal stripe blocking of outer tube opposite position that shell fragment is not ejected when writing.The band place of the appearance that pushes shrapnel makes shell fragment be stretched slightly down by arcuation and becomes straight, and lower channel has enough space ammunition feed sheets and moves down, and the effect and fixing the reaching of fixture block that allow shell fragment be subjected to the horizontal stripe fulcrum are limited.The shell fragment lower end be provided with oblique court contain the recess gib head debouch in pipe connect conduit, the upper surface of teat outside the pipe opposite position the interior teat lower surface of shell fragment fixture block is fastened in can prevent that interior pipe from flying out.Pipe flew out in the pen clip that outer tube upper end active tunnel top loop portions and interior rostrum go out partly can prevent.This is the design features of the utility model two big approximate brake clamping structures not seen before, and it can entire combination combination or indivedual enforcement.Do not changing under the pen core clamping condition partly, the gib head tip of slightly extending can multiple pressure go out a bit of pen core for using, and can more make full use of resource.This shell fragment durable usefulness of energy and use are smoothly.When finishing the action of receipts core, shell fragment is replied the home position, can not produce elasticity tense situation and internal stress effect, can effectively prolong the service life of a tool.Though previous designer had the improvement in several generations, and was similar on the structure, all not too practical with can't volume production, and the utility model can make the whole easy what manufacturing of Zhi Bigeng, does not also influence the overall appearance of a tool, can provide the consumer better with more practical more cheap product.

In sum, the pen core that the utility model utilizes shell fragment to be pushed out is regained the inside of pipe in the what again, and the stress that can avoid effectively being produced in receiving the core action is concentrated breakoff phenomenon; After finishing the action of receipts core, interior pipe is accommodated in together with pen core and returns back to the home position in the outer tube, has effectively prolonged a tool life-span of using and the security that has improved use; Whole the easier what manufacturing of tool coupling design.The utility model all mates again to the fitness of relevant each several part of shell fragment and inner and outer pipes, each abutment is breezy relevant, pack into the structure of outer tube of particularly interior pipe, taked the nested structural design of a straight line, be more convenient for making and assembling, saved and aimed at spent time energy, so shell fragment is all unusual everywhere, architecture advances more wins the known product of what, uses accurately to cooperate between inner and outer pipes and shell fragment and move non-migration, do not rock, stationarity is good, use more smoothly, be more suitable for what and write and use and have a practicality, technically more surpass a known tool and creative.The utility model is that initiative did not appear and really belonged in like product again, is in fact one to have the new design of novelty, creative and practicality.

Concrete structure of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Fig. 1 is a stereogram of the present utility model;

Fig. 2 is an exploded perspective view of the present utility model;

Fig. 3 is the vertical view of the interior pipe of the utility model among Fig. 2;

Fig. 4 is that the utility model is not managed a cutaway view of what top dead-centre in the knockout as yet;

Fig. 5 presses to the cutaway view of bottom dead centre preparation knockout for pipe in the utility model;

The cutaway view that Fig. 6 Gong writes for the utility model knockout;

Fig. 7 the utlity model has the cutaway view that disconnected pen core changes core in advance;

Fig. 8 presses to the cutaway view that core is changed in the bottom dead centre preparation for pipe in the utility model;

Fig. 9 has finished for the utility model and has changed the cutaway view that core Gong is write;

Figure 10 regains the part cutaway view of pen core for the utility model preparation;

Figure 11 is the part amplification view of the utility model Figure 10;

Figure 12 presses shell fragment for the utility model and withdraws from the part cutaway view that interior pipe connects conduit;

Figure 13 has just return the part cutaway view of interior pipe for the utility model pen core;

Figure 14 is the part amplification view of the utility model Figure 11;

Figure 15 is the amplification view of wedge shape protrusion among the utility model Fig. 2;

Figure 16 installs the cutaway view of new pen core additional for the standby core pipe of the utility model;

Figure 17 is the stereogram of the utility model second embodiment;

Figure 18 is the exploded perspective view of the utility model second embodiment;

Figure 19 is the front view of upper half part among the utility model Figure 17;

The part amplification view that Figure 20 just has been retracted for the utility model second embodiment pen core;

Figure 21 is pushed out the part enlarged drawing of portion for the utility model second embodiment pen core;

Figure 22 has exposed the cutaway view that pen core is write for the utility model second embodiment;

Figure 23 is a cutaway view of just receiving core among the utility model second embodiment.

See also Fig. 1, shown in Figure 2, a tool of merogenesis pen core is accurately changed and regained to the utility model, includes an outer tube 10, one interior pipe 20, several pen cores 30, a spring 40, a shell fragment 50, an erasing rubber seat 60 and an erasing rubber 1.

Outer tube 10 and interior pipe 20 all are made into integration with injection moulding processing, 15 places are provided with a upper channel 14 at outer tube 10 taper constricting tube walls, these upper channel 14 upper ends have the connecting portion 141 of a light wall pipe wall, connecting portion 141 is provided with hole 13a and reaches hole 13b down, upper channel 14 belows are the horizontal stripe 12 of a light wall pipe wall, horizontal stripe 12 belows are a lower channel 16, and the relative what upper channel 14 in outer tube 10 upper ends is provided with an active tunnel 11, and active tunnel 11 upper ends are a loop portions 17 on interior pipe 10 tops; In pipe 20 be distinguished on one in pipe 24 with once in pipe 27, pipe 24 upper ends are extra heavy pipe footpath portion 21 in going up, the extra heavy pipe footpath portion relative what active tunnel 11 in 21 sides is provided with a

pen clip

2,20 of pen clip 2 and interior pipes link to each other with a junction 22 that inclination has several bands 222.The pen clip 2 of pipe 20 formed the structure of approximate brake blocking effect design in the active tunnel 11 of outer tube 10 cooperated with loop portions 17, and pipe 20 flies out in preventing.

See also shown in Figure 3, in the utility model the known product of connecting portion 22 different whats like that and pen clip 2 be with wide design, its joint with connecting portion 22 and interior pipe 20 is designed to roomy shape, allow connecting portion 22 and interior pipe 20 upper ends form the shape of acute angle 223, when making connecting portion 22 insert the active tunnel 11 of outer tube 10, be stuck in the both sides of active tunnel 11 with connecting portion 22 acute angles 223 composition surfaces partly, pipe 20 does not rock in making.

In pipe 20 form the whole of specific wire to function, to guarantee the accurate joint of inner and outer pipes, the perforation conduit 272 of pipe 10 aligns the passage 14 on the outer tube 10 in allowing, pen clip 2 aligns active tunnel 11; 24,27 align of pipe up and down, more than in pipe 24 lower ends be provided with the breach 25 and a pair of outstanding block chalaza 23 of a pair of not oversize, top such as circular hole; Pipe 24 bottom surfaces form the pointed more easily insertion of circle in going up; Pipe 27 upper ends are provided with the junction surface 26 of big external diameter down, lower end with interior pipe 24 in the accurate clamping, 26 both sides, junction surface are provided with pair of engaging hole 261 allows each block chalaza 23 snap in, and interior down pipe 27 lower ends are provided with one by interior pipe 20 bottoms a perforation conduit of upwards offering 272 and a non-through conduit 271 that upwards links to each other; And upwards offer a short conduit 284(referring to shown in Figure 5 by the bottom of interior pipe 20) in the relative direction that connects conduit 272.

Interior pipe 20 lower ends have the knockout hole 281 that several wedge shape protrusions 28 and one dwindle internal diameter, as shown in figure 15, the knockout hole 281 upper end inner faces of interior pipe 20 are provided with the fixing bar 283 of several tiny tapers and embrace pen core 30 with folder, the tight puckery sense that can avoid the appearance of whole pen core 30 to be right after by the tube wall of interior pipe 20, please shown in Figure 4 in conjunction with consulting, be changed to the structure of several somes engagement states, make the sliding action that changes core and advance and retreat core easier, each fixes the columnar portion that bar 283 is embraced the pen core 31 that descends joint most, allow pen core 31 can not enter 281 places, knockout hole very soon, two joint pen cores can once not drop out downwards yet.Each protrusion 28 as the triangle bulk is to be provided with at interval with inner tube surface 287, and protrusion 28 is tilted up and down by peak dot maximum outside diameter 286 and is set as.Between several strip edge clipping 151 upper ends in overlapping spring 40 under the whats in the neck 263 at pipe 27 junction surfaces 26 and outer tube 10 constricting tube walls 15 (as shown in Figure 4).

See also Fig. 2, Fig. 4, shown in Figure 5, in will descending by active tunnel 11 places of outer tube 10 pipe 27 place into, place again into pipe 24 in going up, and this is bonded with each other under design whole to pipe 24,27 in upper and lower, promptly not easily separated behind the joint, in 20 whens assembling of pipe, can be not oversize in so making, and pipe is directly inserted the flexibility that is produced and greatly reduced in will growing than known product, avoided crooked in the strain that caused of pipe.Each pen core 30 enters core hole 211 via the scalariform of interior pipe 20 upper ends to be poured into, and a row pen core 30 is put in the what in the pipe 20.

Interior pipe 20 upper ends are equipped with one and wipe seat 60, core hole 211 internal diameters are advanced for pipe 24 on the identical what in the junction surface 61 that pen is wiped seat 60 lower ends, junction surface 61 card whats enter 211 places, core hole, a Rong Xin hole 62 is offered in 61 bottom at the junction surface, with the ccontaining many joint pen cores of energy, pen is wiped the internal diameter of the identical what outer tube 10 of external diameter of seat 60, and form an accommodation space 63 for holding one erasing rubber 1, the inner face of outer tube 10 loop portions 17 forms one and dwindles inside diameter 171, also be to dwindle inside diameter 171 in the active tunnel 11 up to rank portion 174 places, pen is wiped when seat 60 moves with interior pipe 20 and can not be blocked, because of having a gap 175 at

pen wiping seat

60 and 10 of outer tubes, and when pen is wiped seat 60 and is maintained static and 17 of loop portions have a gap 176, loop portions 17 tops that the body that allows pen wipe seat 60 slightly exposes outer tube 10, erasing rubber 1 is exposed for using, with pen wipe seat 60 seal in pipe 20 the top and can not allow pen core 30 when being inverted tool, be poured out by accident.

With the one-body molded shell fragment of making 50 of high-tension material, its body side-looking outward appearance is curved arc shape slightly, moves as the body of shell fragment 50 such as lever principle, make lower end gib head 54 debouch in the perforation conduit 272 of pipe 20, finish the action of receiving core, advancing core, changing core.

See also shown in Figure 14, shell fragment 50 upper ends are arranged with fixture block 51 and following fixture block 53 towards the direction of outer tube 10, locate to be equipped with an outstanding ring edge 52a and a 52b in the last fixture block 51 and the outer end of following fixture block 53, and last hole 13a that snaps in what outer tube 10 and following hole 13b, the elasticity of utilizing shell fragment 50 up and down

fixture block

51,53 is pressed into hole 13a and following hole 13b, the dispersion that reaches two fixing points meets with stresses, can not produce the situation of hole and fixture block friction, making fixture block not grind aperture does not enlarge, do not cause to get loose, this is the special construction design that prevents that shell fragment 50 bullets from falling.

The body lower end of shell fragment 50 is tiltedly stretched one inwardly and is the gib head 54 of level and smooth cambered surface up and down, be provided with a recess 55 in the middle of gib head 54 lower camber sides, allow recess 55 when shell fragment presses, with gib head 54 partly be against the tube wall location of outer tube 10 as hook-shaped head end, make gib head 54 be difficult for skidding off the lower channel 16 of outer tube 10.

Gib head 54 has the function of pipe 20 pen cores in the compacting, and gib head 54 more outstanding points more than 545 are extruded the length of a bit of pen core 31, and with one section pen core resource of many utilizations, this does not influence and descends the bundle solidity of joint pen core 31 in interior pipe bottom most.

The body lower end of

shell fragment

50 and 16 of the lower channels of outer tube 10 maintain appropriate gap 161, allow be pressed when elongated as the shell fragment 50 of arcuation, have the body of enough spaces ammunition feed sheet 50 to move down at lower channel 16.

The length of gib head 54 tiltedly extends the center (shown in Figure 4 in conjunction with consulting) that surpasses interior pipe 20 at the lower end of shell fragment 50, and the lower channel 16 by outer tube 10 during installing shell fragment 50 penetrates, and allows gib head 54 put in the perforation conduit 272 of interior pipe 20.When gib head 54 withdraws from perforation conduit 272, slip into non-through conduit 271 via connecting conduit 272 upper ends one oblique surface 279.In pipe 20 to lower slider, the perforation conduit 272 of interior pipe 20 exposes outer tube 10 lower end length and is no more than two joint pen cores (shown in Figure 5 in conjunction with consulting), gib head 54 is entered by connecting conduit 272 again, break away along the tip of joint pen core 32 second from the bottom and to descend the top (shown in Figure 6) of joint pen core 31 into the top what most in conjunction with consulting, this is the design of precision architecture, so can once not release two joint pen cores.

The design of another special construction of the utility model is that the body appropriate location at shell fragment 50 is provided with a corner block 57, cooperates the horizontal stripe 12 of outer tube 10, when a tool uses, bears the reaction force that the user applies the what writing surface, reaches gib head 54 by pen core 31 and goes to shell fragment 50; If strength too conference causes shell fragment 50 to be forced to bending, make gib head 54 forfeiture blocking effects, pipe 20 connects conduit 272 in being forced to withdraw from, and at this moment pen core 31 is not stressed and can be received core automatically, and loses the effect of writing.Be provided with the structure of the corner block 57 and the horizontal stripe 12 of shell fragment 50, pipe 10 upwards retreats in can preventing when stressed, makes the lower end of corner block 57 card what horizontal stripes 12, and the situation that shell fragment 50 breaks away from can not take place, and the size that can not write strength has influence on receives the function of writing; And Guan Buhui rocks in making, and stablizes shell fragment, and the partly situation of squeeze crack of outer tube 10 lower ends can not take place after the use.

Be provided with several in the body appearance of shell fragment 50 and protrude band 56, make shell fragment 50 slightly become straight with push shrapnel 50 56 ones of bands of power A, the upper and

lower fixture block

51,53 of the limited what in shell fragment 50 upper ends is fixed, 56 ones of body bands enter in the upper channel 14 of outer tube 10, horizontal stripe 12 with outer tube 10 is a fulcrum, allow and withdraw between inner and outer pipes in the perforation conduit 272 of gib head 54 by interior pipe 20 of shell fragment 50, pipe 20 in no longer blocking is lived, while is by the suitable restriction point of horizontal stripe 12 conducts and bring reaction force, makes shell fragment 50 good pressures, easy pressure and durable practicality.

When gib head 54 no longer manages 20 in the blocking firmly, 281 apertures, knockout hole of interior pipe 20 lower ends can not dwindle, manage in 20 in pen core 31 just is retracted into easily, when influenced by spring 40 restoring forces interior pipe 20 is taken back in the outer tube 10, force the aperture in knockout hole 281 to dwindle, promptly dwindle the bottom end opening 152 that 28 ones of wedge shape protrusions enter outer tube 10 with the space that connects conduit 272 and short conduit 284, allow pen core 31 columnar portion be retracted into comparatively wide conveying pen core space 282 by interior pipe 20 clamping parts 285, fixed bar 283 by each and embrace, finish and receive the core action.

See also Fig. 4 and advance the core process to shown in Figure 6, interior pipe 20 is subjected to the elastic force of spring 40, and manage in 20 in the gib head 54 of shell fragment 50 stretches into naturally in the home position of position what Fig. 4 top dead-centre, and hook the pen core 31 that a what descends joint most, the knockout hole 281 that also is subjected to dwindling internal diameter stops and does not drop out in interior pipe 20; Pipe 20 in being promoted downwards by pen clip portion 2 moves to the lower dead point position of Fig. 5, and spring 40 is compressed, and gib head 54 is moved to and manages 10 non-through conduit 271 in being against by connecting conduit 272 in interior pipe 20 descends the way, and interior pipe 20 stretches out in the lower end of outer tube 10; Descend most this moment the pen core 31 of joint only to have the tip of fining away in advance to enter in the knockout hole 281, and larger-diameter columnar portion stop the superjacent air space 282 in what knockout hole 281, is fixed bar to keep for 283 armfuls by each; Not during the application of force, interior pipe 20 is compressed the elastic force of spring 40 and is upwards retracted, pipe 20 in gib head 54 enters once again, gib head 54 is by joint pen core 32 other pen core 31 end faces that slip into and descend joint to what most second from the bottom, make the tip of pen core 31 be pushed out of knockout hole 281, the columnar portion of pen core 31 enters the clamping part 285 in knockout hole 281, slightly enlarge the internal diameter in knockout hole 281, bottom end opening 152 internal diameters of 286 extended what outer tube 10 constricting tube walls 15 of interior pipe 20 bottom maximum outside diameters that several wedge shape protrusions 28 are constituted, 286 ones of maximum outside diameters are risen at interior pipe 20 to be retracted in the process by the bottom end opening 152 of resistance what outer tube 10, stop the position that what Fig. 6 preparation is write, 17 of the loop portions of interior pipe 20 end faces and outer tube 10 have a gap 173 to produce, different what is shown in Figure 4 when not using gapless shapes that contact fully, pipe 20 fixed pen core 31 for writing in opening 152 bundles of outer tube 10 were lived.

See also Fig. 7 to shown in Figure 9, because of pen core 31 rust is arranged in writing or the core process of changing that must use a new pen core 32 instead of fractureing with to advance the core process identical, just push old pen core 31 downwards by new pen core 32, because of interior pipe 20 when pressing down back withdrawal process, gib head 54 can not be pressed onto the upper end of old pen core 31, and can be pressed onto the end face of new pen core 32, and then release new pen core 32, old pen core 31 is extruded automatically dropped.

See also Figure 10 to receipts core process shown in Figure 14, pull out gib head 54 when side pressure shell fragment 50, the pen core 31 that lowermost end has been released is managed in 20 in regaining fully in advance; When the application of force of removing shell fragment 50, borrow the elastic reaction of shell fragment 50, manage in 20 in once again gib head 54 being sent into, pen core 31 lower ends of taking in are in advance contained and do not fall down, after finishing the action of receipts core, it is exposed in interior pipe 20 lower ends partly be retracted in the what outer tube 10, only expose head little by little.

When receiving core, press shell fragment 50 gently, it is become than orthodrome by less circular arc, shell fragment 50 is with the motion mode of seesaw, gib head 54 is pulled out by connecting in the conduit 272, then, the user presses the surface of what desktop or other hard things 60 gently with the tip of pen core 31, because of the gib head 54 of shell fragment 50 is not located in the what in the pipe 20, passage is unimpeded in the interior pipe 20, the reaction force that pen core 31 is applied by hard thing, in the pipe 20, interior pipe 20 still stops on the what origin-location in being pushed back fully.After in pen core 31 is taken in fully, managing 20, promptly decontroling shell fragment 50 restores to the original state, interior pipe 20 elastic force that bear spring 40 are upwards retracted in the process rapidly, pipe 20 in the gib head 54 of shell fragment 50 reenters, place, tip by pen core 31 stretches into, pen core is up pushed away again, its limited what gib head 54 can not fallen downwards, pen core 31 columnar portion are sandwiched in and fix 283 ones of bars, each wedge shape protrusion 28 of interior pipe 20 bottoms is because of having short conduit 284 and connecting conduit 271, be able to be dwindled its external diameter by the extrusion of bottom end opening 152 internal faces of outer tube 10, pipe 20 28 ones of bottom wedge shape protrusions are able to the bottom end opening 152 by outer tube 10 in allowing, be retracted to state as shown in Figure 4, return back to the home position.

See also shown in Figure 16, each pen core 30 in pipe 20 in the what of position is used the light time soon, pipe 20 tops such as annular groove shape rank portion 212 enters 211 places, core hole in only needing a deposit pen core tube 70 that the new pen core 30 of a plurality of vertical arrangements is housed inserted, the erasing rubber seat 60 of pipe 10 upper ends in taking out, the stopper of deposit pen core tube 70 is unpluged, make the mouth of pipe of deposit pen core tube 70 and enter core hole 211 and join, advance the external diameter of the bigger what deposit of core hole 211 internal diameters pen core tube 70, drop out to prevent pen core 30.

See also second embodiment of the utility model shown in Figure 17 to 19, its different what first embodiment's is to be equipped with a cap 19 in the upper end of interior pipe 20 and outer tube 10, outer tube 10 upper ends are that straight tube does not offer active tunnel 11, and pipe 24 upper ends do not have pen clip 2 and extra heavy pipe footpath portion 21 in going up.

Be provided with as the inwardly outstanding interior teat 531 of bulk with 50 times fixture blocks 53 of shell fragment, pipe 20 non-through conduits 271 tops were just like the upper surface 276 of the outside outer teat of giving prominence to 275 of bulk in its lower surface 532 blockings firmly were located at, when managing 20 retractions in preventing, upper end fly bomb by outer tube 10 goes out up, is the particular design of approximate brake clamping structure effect.In the groove 278 of offering a suitable length above the outer teat 275 of interior pipe 20 up allows teat 531 stretch into along its slip and not can with interior pipe 20 mantle frictions.As shown in figure 20, when no pen core 31 was held, the space 277(that interior teat 531 lower surfaces 532 and outer teat 275 upper surfaces are 276 was as shown in figure 21) disappear; As shown in figure 21, when pen core 31 is held, space 277 is arranged then, the blocking effect of teat 531 and outer teat 275 can not fall back backward in the promptly interior pipe 20 limited whats.

See also shown in Figure 22, this cap 19 has a sphere dish shape upper surface 191, contain an outstanding outer tube diameter part 192, be provided with a through hole 193 in upper surface 191 tops, cap 19 is provided with several card article 194 as tubular lid inner face place near to the upper end, blocking in the what upper end of pipe 20 closely, and cap 19 inner face lower ends are provided with lead angle, can pull out and be placed in the upper end of inner and outer pipes easilier.Upward interior pipe 24 upper ends are provided with into, and core hole 211 supplies to pack into new pen core.Be provided with through hole 193 except that in order to allow cap easily the turnover, the pen core 30 in also allowing in the pipe 20 can not have the puckery sense of resistance swimmingly to lower slider, presses Shi Yihui and allows air flow out, and keeps the balance of user mode inner and outer air pressure.

Claims

1, a tool of a kind of accurate replacing and withdrawal merogenesis pen core, it comprises:

Its feature is at what:

2, accurate replacing according to claim 1 and regain a tool of merogenesis pen core, its feature are at what: its cambered surface middle section, lower end of described shell fragment gib head is provided with a recess.

3, accurate replacing according to claim 1 and regain a tool of merogenesis pen core, its feature are at what: an active tunnel is located to be provided with in the same way with this upper channel in described outer tube upper end, forms a loop portions on the top; The pipe upper end had an extra heavy pipe footpath portion in should going up, be provided with a pen clip in this extra heavy pipe footpath portion one side, this pen clip has several bands with a surface and skewed connecting portion links to each other with extra heavy pipe footpath portion, this connecting portion and extra heavy pipe footpath portion connecting place are roomy shape, and formation inner face end, this inner face end forms acute angle with the tube wall that is somebody's turn to do interior pipe, and this connecting portion holding pipe in these outer tube active tunnel both sides make is not rocked; And manage loop portions in addition and reach the interior clamping structure that pen clip formation prevents that interior pipe from flying out of managing.

4, a tool of accurate replacing according to claim 1 and withdrawal merogenesis pen core, its feature is at what: the pipe upper end is placed in one and wipes a seat junction surface, lower end in described, a Rong Xin hole is upwards offered by the bottom in this junction surface, be provided with an accommodation space for holding one erasing rubber in this wiping seat body, this is wiped seat and moves with interior pipe.

5, a tool of accurate replacing according to claim 1 and withdrawal merogenesis pen core, its feature is at what: fixture block is provided with just like the inwardly outstanding interior teat of bulk under the described shell fragment, the lower surface blocking firmly is located at the outer teat upper surface that outwards give prominence to just like the square shape non-through conduit of pipe top in this, forms the clamping structure that pipe flies out in preventing.

6, accurate replacing according to claim 1 and regain a tool of merogenesis pen core, its feature are at what: pipe is offered one outside it up and is allowed in this fixture block teat along the groove of the suitable length of its slip described in above the teat.

7, a tool of accurate replacing according to claim 1 and withdrawal merogenesis pen core, its feature is at what: the pipe upper end is equipped with the cap with a sphere dish shape upper surface in described, this cap is provided with this outer tube of part lid what of an outstanding outer tube diameter, the upper surface top is provided with a through hole, this cap such as tubular lid inner face place near to the upper end are provided with the card article that several card whats are somebody's turn to do interior pipe upper end, and this cap inner face lower end is provided with the chamfering of easy turnover.

8, according to the described accurate replacing of arbitrary claim in the claim 1 to 7 and regain a tool of merogenesis pen core, its feature is at what: manage the fixing bar that its lower end inner face is provided with several tiny tapers described in.