CN2051565U - Drawing pen with writing-cores automatically replaceable and contractable length - Google Patents

Abstract

The utility model discloses a drawing pen with writing-cores automatically replaceable and contractive length which is composed of an inner and an external pen pipe. Sharpened lead cords whose heads and tails are connected together are loaded in the pen pipe. When the first lead cord can not be used, the inner pen pipe is pressed, the waste lead cord can be automatically discharged by the special structure of the inner and the external pen pipe so that the second lead cord can enter the use state. The defects that hands are easy to dirty and the lead cord is not tight in clamping of the prior art can be eliminated. The number of parts of the prior art is reduced, and the manufacturing tolerance of the parts is relaxed. The utility model is suitable to the lead cords, ball-point pen cores, wax pen cores, and load box type pen cores, so that the fabricating cost is reduced, and the rate of certified products can reach almost a hundred percent when production.

Description

Drawing pen with writing-cores automatically replaceable and contractable length

The relevant person with the structure of a kind of tool of the utility model refers to the automatic pen free of shapening of a kind of simple structure, practicality especially.

Generally automatic extensible pencil on the market is of a great variety, right most of complex structures, and average number of components shows for numerous and diverse so make, assemble formality more than four or four.Though the automatic extensible pencil of simple structure is also arranged on the market, precisely because when writing, plumbous heart nib difficulty becomes stable, the time consider the nib activity, desire to reach textural precision control, different from difficult, and store up the pencil seat of using, as losing one, then whole paralysis, and the writing element of its use is unexpectedly accused when losing, and a then whole pencil promptly is state of paralysis and can not continues to use, and really belongs to unfortunately, and when changing writing element, need to change the outfit with hand, refill again into shaft of a writing brush local terminal, very easily stain hand and use last inconvenience, and make the user feel puzzlement person.

The utility model system is improved at above shortcoming, provide a kind of cooperate a large amount of productions, simple and convenient assembly, simple element, with low cost, have durable, a practical tool concurrently.

The main purpose of the utility model, be to utilize the elasticity of material own to make one to be backed down by the horizontal ridge of inner pen tube upper end one with the microscler buckling parts of outer pen tube one, and fastened, and the horizontal loam cake of this microscler fastening thing cover the inner pen tube upper end enter the core hole.Depress inner pen tube make the elasticity hitcher that is positioned at the outer pen tube lower end by side direction push open with allow a pen core by and withstand above pen core and fall, and reach the purpose person of automatic control knockout.

Time purpose of the utility model is to take place between the shaft of a writing brush and pen core the tight effect that plugs together mutually, and when writing, the shaft of a writing brush overlaps the pen core of holding and is limited by the wedge shape protrusion of bottom and the clamping of outer pen tube, stabilizes very much and does not have a fraud patient who rocks.

Another purpose of the utility model is to provide a kind of and only uses the inside and outside shaft of a writing brush or a writing element (pen core) to reach to write purpose as snug as a bug in a rug.So a writing element is unexpectedly accused to lose and is not sufficient to make the utility model to cause the phenomenon of paralysis one of in the shaft of a writing brush, this joint is one of greatest feature for the utility model, also be one of the utility model effect of giving prominence to the most.

The another purpose of the utility model, be to provide a kind of writing implement, plugging together between the pen core and the shaft of a writing brush have structure the simplest plug together device mutually, therefore thereby the footpath cooperates with precision between shaft of a writing brush internal diameter and greatly relaxes the utility model and construct made writing implement outside this pen core, processing procedure is simplified, the loss of its product is several to be zero, and productive rate therefore greatly improves.

The part label of being narrated in this article in addition, the duplicate numbers representative shown in its each figure identical or region of interest or other part.

Be referred to as " pen free of shapening " herein and be not limited only to pencil, utilize one to write nib or nib and can reach and write purpose person and belong to it such as, for example ballpoint pen, crayon, dress box pen etc. are also.

For other features, purpose and the advantage that makes the utility model can more manifest, be illustrated in the back for two preferable embodiment conjunction with figs. now:

The simple declaration of accompanying drawing:

Shown in Figure 1 is the three-dimensional exploded view of the utility model tool first embodiment;

Shown in Figure 2 is the side cutaway view of this tool first embodiment; The pen core that shows the inner pen tube the inside is withstood by the elasticity hitcher;

Shown in Figure 3 is the side cutaway view of this tool first embodiment; Show the situation of depressing inner pen tube;

Shown in Figure 4 is the side cutaway view of this tool first embodiment; Show that inner pen tube is pushed back the original place and situation that a trifle pen core exposes;

Shown in Figure 5 is the side cutaway view of this tool first embodiment; The demonstration pen core fractures and desires more to renew the situation of pen core;

Fig. 6 similar shown in Figure 4 be the side cutaway view of this tool first embodiment; Show that inner pen tube is compressed that spring rebounds and the situation of exposing pen core;

Shown in Figure 7 is the pen core of this tool first embodiment is pushed up back inner pen tube by desktop side cutaway view;

Shown in Figure 8 is the partial enlarged drawing of Fig. 5;

The profile that system shown in Figure 9 is made along the 9-9 line among Fig. 8;

Shown in Figure 10 is the profile of this tool first embodiment when installing new pen core additional; And

Shown in Figure 11 is the stereo appearance figure of this tool first embodiment;

Shown in Figure 12 is the stereo appearance figure of the utility model tool second embodiment;

Shown in Figure 13 is the three-dimensional exploded view of this tool second embodiment;

Shown in Figure 14 is the side cutaway view of this tool second embodiment; Show that pen core is withstood by the V gib head;

Shown in Figure 15 is the side cutaway view of this tool second embodiment; Show the situation of depressing inner pen tube;

Shown in Figure 16 is the side cutaway view of this tool second embodiment; Pipe is compressed the spring original place of rebounding in showing, and pen core exposes the situation of the shaft of a writing brush;

Shown in Figure 17 is the side cutaway view of this tool second embodiment; The demonstration pen core fractures and desires more to renew the situation of pen core;

Shown in Figure 180 is the side cutaway view of this tool second embodiment; The pen core that demonstration fractures has been replaced by the situation of new pen core;

Shown in Figure 19 is the side cutaway view of this tool second embodiment; Show pen core is pushed up back the shaft of a writing brush by desktop situation;

Figure 20 is the enlarged drawing of part among Figure 17;

The profile that system shown in Figure 21 21-21 line in Figure 20 is made; And

Figure 22 is the fragmentary cross-sectional view that this tool second embodiment installs new pen core additional.

Seeing also Fig. 1 to shown in Figure 11, is that this pen free of shapening includes outer pen tube 10 and inner pen tube 20 in order to pen free of shapening first embodiment of displaying the utility model.Outer pen tube is a hollow circular tube, and the lower end is the constricting tube wall 15 of taper, and tolerable inner pen tube 20 is inserted in it, and mat manual mode and spring 40 make it axially to reciprocatingly slide in outer pen tube.This outer pen tube 10 is provided with the neck shape buckling parts 11 that is essentially an axially open on the side pipe wall on nearly top, this buckling parts 11 is in order to allowing this inner pen tube 20 through laterally being packed in the outer pen tube 10 by opening 19 of its bottom, and the protrusion ora terminalis 211 that is had with this horizontal ridge 21 in inner pen tube 20 tops is resisted against on the side tube wall 111 of buckling parts 11.The top of this outer tube 10 is that a drum ladle 18 can hold cover one erasing rubber 17.Inner pen tube 20 nearly waist places are provided with the protruding thing 26 of semicircular, its external diameter is slightly less than outer pen tube 10 internal diameters, inner pen tube 20 is moved up and down in outer pen tube 10, and Shi Buhui rocks (sign 201 is operated the direction that this inner pen tube moves up and down in order to the indication user), one V font slotted eye 271 is arranged on the outer pen tube 10 lower end constricting tube walls 15, neighbour one of is provided with oppositely ∧ font slotted eye 272 on it, enclose one group of elasticity hitcher 121 and press section 122 that links to each other and dangle of common formation in it, end has a gib head that curves inwardly 13 under the hitcher 121, but, and can make the gib head 13 outside bullet persons of moving because of the leverage that is pressed into of press section 122 above the elasticity mat of material own.

Please consult Fig. 2 again, inner pen tube 20 also is a hollow circular tube, what its inside 27 just can hold the most lontitudinal series of a row cuts pen core 30 in advance, be provided with two vertical long and narrow perforation conduits 23 and 24 from knockout hole 29 along inner pen tube 20, make this joint inner pen tube 20 have elasticity, and inwardly clamp pen core 30, or slightly outwards opened so that knockout hole 29 can be expanded slightly downwards, make pen core be easy to by.The gib head 13 of this elasticity gib head 12, can stretch into inner pen tube 20 inside center through above-mentioned long and narrow perforation conduit 23, withstanding pen core 30 prevents to fall down, the gradually little from bottom to top wedge shape protrusion 28 of ring wall that several axially parallel arrangements are arranged on the shaft of a writing brush 20 outer walls near knockout hole 29, when inner wall tube 20 up is pushed into the top, when horizontal ridge 21 is held by the prevention flange 14 of an outer pen tube inwall, wedge shape protrusion 28 is compressed by outer pen tube 10 lower end tube walls, make it to be difficult for rocking and compress pen core 30, in order to writing.

See also Fig. 3 and Fig. 4, during use with the horizontal ridge in inner pen tube 20 tops 21 toward being depressed into opening 19 positions, be that the ring-type protrusion 26 of inner pen tube 20 centres is run into the outer pen tube 10 lower end shafts of a writing brush and begun to shrink position 15, the shaft of a writing brush 20 is outwards pushed the gib head 13 of elasticity hitcher 12 open downwards within above-mentioned, and enter in the end shallow slot road 25 in through slot road 23, depart from the vertical axis line of vertical perforation conduit 23 to prevent elastic hook tool 12.At this moment, though pen core 30 is not held by gib head 13, but because of the bottom of inner pen tube 20 offer conduit 23 and 24 places have in to the elasticity of clamping, and the footpath is also suitably dwindled within this section inner pen tube 20, therefore also pen core 30 had suitable braking action, can prevent that pen core 30 from dropping out, see also Fig. 4, if again inner pen tube 20 is upwards passed, initial stage, its inner pen core 30 was to move up with inner pen tube 20,25 slide and insert inner pen tube 20 a joint pen core 31 or desire to expose the shaft of a writing brush bottom along the shallow slot road until the gib head 13 of this elasticity hitcher 12 one of to write joint pen core 31 upper ends, make this pen core 310 that is positioned at gib head 13 belows stopped by gib head 13 and no longer with moving on the inner pen tube 20, when inner pen tube 20 is pushed into up always that horizontal ridge 21 surmounts and when being limited by the prevention flange 14 of outer pen tube 10, this above-mentioned joint pen core 31 partly is pushed out of outside the knockout hole 29 because of being hampered by gib head 13, reaches the purpose of automatic propelling.When bottom pen core 32 fractures or unfavorable the writing of chap and desire when changing pen core, as long as according to said procedure, with inner pen tube 20 down obstruct ㄈ in riotous profusion shown in), again inner pen tube 20 is up drawn by compression spring 40, the gib head 13 of elasticity hitcher 12 is absorbed in the inner pen tube 20 (as shown in Figure 6), can ejects new pen core 33 automatically for use.Shrink pen core 33 when the desire of finishing using and to depress press section 122 along the arrow A direction earlier; and gib head 13 is shifted out outside the inner pen tube 20; the pen core that will expose again 33 alignment desktops 60 or with finger along the arrow B direction top of exerting oneself a little; can be with in the pen core 33 retraction inner pen tubes 20 (as shown in Figure 7), with the purpose that reaches the protection pen core and be convenient for carrying.

By above-mentioned all figure those shown, be inserted in inner pen tube 20 peripheries owing to install compression spring 40 additional, be held between the annular projection thing 26 and outer pen tube 10 lower end tube wall tying flanges 101 of inner pen tube 20, during use, with thumb the horizontal ridge 21 of inner pen tube 20 upper ends is down pushed, made 40 compressions of compression spring, decontrol thumb then, the elastic force of utilization compression spring 40 pushes up neck shape buckling parts 11 with the horizontal ridge 21 of inner pen tube 20, then ejects new pen core automatically for use.

See also Figure 10 and show that working as pen core uses the light time soon, can adorn a plurality of new pen cores in a row in the pen core reserve tube 50.Above-mentioned enter core hole 22, its internal diameter is slightly larger than deposit pen core tube 50 external diameters, but above-mentioned deposit pen core tube 50 direct parts are inserted in the core hole 22, improves the shortcoming that pen core drops out easily and hand is made dirty when loading new pen core.Wall is provided with a limit flange 51 within deposit pen core tube 50 near-ends, oppositely drops out in order to avoid its inner reserve pen core 30.

See also Figure 12, Figure 13 and person shown in Figure 14, be another embodiment of the utility model, include an outer pen tube 10, inner pen tube 20 and compression spring 40, outer pen tube 10 is a hollow circular tube, can hold inner pen tube 20 is inserted in wherein, these outer pen tube 10 lower ends are a constricting tube wall 15, one V font groove 171 is arranged on constricting tube wall 15, its top neighbour one of is provided with oppositely ∧ font groove 172, enclose in it and form an elasticity gib head 12 that dangles downwards, this elasticity gib head 12 has a gib head that curves inwardly 13, can extend transversely into inner pen tube 20 inside center, withstand pen core 30 and prevent that pen core from dropping out, and can use the leverage that is pressed into of top raceway groove handle 122 because of the elasticity of material own, and gib head 13 outside bullets are moved, in order to do supplying to penetrate pen core 30.

The shaft of a writing brush 20 also is a hollow circular tube within above-mentioned, its inside 27 just can hold a plurality of vertical shafts of a writing brush 30 of a row, inner pen tube 20 tops are provided with one-body molded pen clip portion 61, this pen clip portion 61 can slide up and down along the vertical long and narrow perforation conduit 71 on outer pen tube 10 tops, and by having a protrusion 62 just can imbed in outer pen tube 10 upper end grooves 71 and 72 simultaneously on the shaft of a writing brush 20 walls within pen clip portion 61 opposite sides with the abutting end 611 of pen clip portion 61, these outer pen tube 10 upper ends put on the cap for brush 73 slotted eye 734 can establish an erasing rubber 17 in order to use, the flange 732 of this cap for brush 73 is provided with hollow projection 731 in, its external diameter equates outer pen tube 10 tops, several parallel annular projection 733 on outer pen tube 10 perisporiums is cooperatively interacted in the space of lower flange 732 and interior hollow projection 731 and closely chimeric.

Inner pen tube 20 lower ends have two and vertically connect conduits 23 and 24 and can make the knockout hole 29 of smaller pen core 30 external diameters have elasticity can be expanded outwardly tube wall a little, being convenient to the shaft of a writing brush 30 passes through, the gib head 13 of this elasticity hitcher 12 promptly stretches into inner pen tube 20 central interior via above-mentioned wherein one perforation conduit 23, withstand pen core 30 and prevent that it from dropping out, the gradually little from bottom to top wedge shape protrusion 28 of several endless tubes is arranged on the tube wall in knockout hole 29, when inner pen tube 20 forced back up, this wedge shape protrusion 28 is subjected to the pen core 30 that presses of outer pen tube 10 tube walls to make it to be difficult for rocking, in order to writing (as Figure 16 and shown in Figure 19).Be respectively equipped with annular projection thing 261 and 26 at inner pen tube 20 nearly tops and nearly waist location, its external diameter is less than footpath within the outer pen tube 10, when being slided in outer pen tube 10, inner pen tube 20 is difficult for rocking, and 11 of the tying flanges of the annular projection thing 26 of waist and outer pen tube lower end inner tubal wall, putting a compression spring 40 is placed in outside the inner pen tube 20, when depressing inner pen tube 20, the inner pen tube 20 but elastic force of mat compression spring 40 rebounds.

See also Figure 14, Figure 15 and Figure 16, during use pen clip portion 61 is depressed drive inner pen tube 20 toward moving down, the gib head 13 of above-mentioned elasticity hitcher 12 is pushed open outward, and stretch in the perforation shallow slot road, conduit 23 upper end 25, to prevent that elastic hook tool 12 from departing from the vertical axis line that connects conduit 23, be pushed into the bottom that connects conduit 71 downwards when pen clip portion 61, decontrol hand again, because of the elastic force that compresses spring 40 up pushes away inner pen tube 20, the gib head 13 that makes elasticity hitcher 12 25 slides and inserts pen core 31 upper ends in the knockout hole 29 of desiring to expose inner pen tube 20 in the inner pen tubes 20 along the shallow slot road, after protrusion 62 imbeds groove 72, above-mentionedly desire to expose the pen core 31 in knockout hole 29 because of being hampered by gib head 13 and partly being released knockout hole 29, to reach the purpose of automatic propelling.

See also Figure 17 and Figure 18, when bottom pen core 32 fractures or chap is unfavorable when writing, only need pen clip portion 61 is pressed downwardly onto the end according to said procedure, decontrol hand mat compression spring 40 elastic force again with inner pen tube 20 original place of rebounding, can eject new pen core 33 automatically for use.If desire to fold pen core 33 after finishing using; can will push raceway groove handle 122 according to the arrow A direction; and gib head 13 outside bullets are moved; the pen core 33 that will expose simultaneously faces toward desk 60 or points a top according to the arrow B direction; can be with in the pen core 32 retraction inner pen tubes 20, to protect pen core and conveniently to take usefulness (as shown in figure 19).

See also shown in Figure 22, when pen core is used the light time soon, only need and will adorn the new pen core 30 of a plurality of vertical arrangements in the deposit pen core tube 50, insertion inner pen tube 20 tops enter core hole 22, this advances core hole 22 internal diameters and is slightly larger than footpath outside the deposit pen core tube 50, can prevent that the shaft of a writing brush 30 from dropping out accidentally.

Claims (6)

1, a kind of automatic changing core and collapsible writing-drawing pen is characterized by and include:

One inner pen tube, be hollow straight tube, the nearly waist of this inner pen tube place is provided with the semicircular projecture, can make this section tube wall have elasticity and on the tail end tube wall, offer two vertical long and narrow perforation conduits, can enlarge slightly, pass through in order to the pen core in the shaft of a writing brush, this inner pen tube end face has one and enters the core hole, can slip in this inner pen tube for the pen core of cutting in advance of a plurality of vertical arrangements of a row, there is a knockout hole bottom surface, exposes thus for pen core; And

One shaft of a writing brush, it also is a hollow straight tube, at tail end is constricting tube wall, have a V font groove on this constricting tube wall, enclose the formation one elasticity hitcher that inwardly dangles in it, can pass one of this long and narrow perforation conduit, stretch into this inner pen tube central interior, be provided with an opening of allowing this inner pen tube insertion on the top, the neighbour one of is provided with oppositely ∧ font groove on this V font groove; When this inner pen tube is down passed, this elasticity hitcher is backed down by this long and narrow perforation conduit side direction, desires to expose on the pen core in this knockout hole and stretch into, and when this inner pen tube up pushed away, this pen core of desiring to expose inner pen tube was hampered by the elasticity hitcher and is partly released the core hole.

2, automatic changing core and collapsible writing-drawing pen according to claim 1, it is characterized by wherein comprise within shaft of a writing brush top have a horizontal ridge, and be to form a retaining by ora terminalis, this outer pen tube top is provided with a neck shape buckling parts that extends upward from tube wall, has a horizontal loam cake system and limits this inner pen tube at this outer pen tube moved upward inside stroke and cover this and enter the core hole.

3, automatic changing core and collapsible writing-drawing pen according to claim 1, it is characterized by wherein comprise within shaft of a writing brush top have a pen clip portion, vertical long and narrow perforation conduit along this outer pen tube top slides up and down, and at the sheathed cap for brush in this outer pen tube top to limit this pen clip portion stroke that moves upward, this cap for brush also can have an erasing rubber.

4, automatic changing core and collapsible writing-drawing pen according to claim 1, it is characterized by wherein comprise within a tail pipe wall be provided with several wedge-shaped protection around this tube wall, when this inner pen tube up during forced back, this wedge-shaped protection is subjected to clamping in this outer pen tube wall the pen core that is exposed to inner pen tube.

5, automatic changing core and collapsible writing-drawing pen according to claim 1, what it is characterized by shaft of a writing brush top within wherein comprising enters the core hole, make this advance core hole internal diameter and be slightly larger than footpath outside the deposit pen core tube, make this reserve tube can directly insert this and enter the core hole, prevent unlikely the dropping out of the filling stylish pen core of new pen core.

6, automatic changing core and collapsible writing-drawing pen according to claim 1 is characterized by its inner pen tube and more is arranged with a spring assembly outward, is to give upwards thrust of this inner pen tube one.

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