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CN107825893B - A method of replacement different model pencil-lead - Google Patents

A method of replacement different model pencil-lead Download PDF

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Publication number
CN107825893B
CN107825893B CN201710627694.5A CN201710627694A CN107825893B CN 107825893 B CN107825893 B CN 107825893B CN 201710627694 A CN201710627694 A CN 201710627694A CN 107825893 B CN107825893 B CN 107825893B
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CN
China
Prior art keywords
lead
core
pencil
pen
gear
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Expired - Fee Related
Application number
CN201710627694.5A
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Chinese (zh)
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CN107825893A (en
Inventor
吴博文
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Shandong Oriental Health Industry Development Co ltd
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Individual
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Filing date
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Priority to CN201710627694.5A priority Critical patent/CN107825893B/en
Publication of CN107825893A publication Critical patent/CN107825893A/en
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Publication of CN107825893B publication Critical patent/CN107825893B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00Propelling pencils
    • B43K21/02Writing-core feeding mechanisms
    • B43K21/16Writing-core feeding mechanisms with stepwise feed of writing-cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00Propelling pencils
    • B43K21/003Propelling pencils with lead sections or lead cartridges

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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

The invention discloses a kind of methods for replacing different model pencil-lead, belong to technical field of stationery.Pencil is provided with storage core apparatus close to one end of pen cover in the present invention, which is inputted different lead for retractable pencils in pen tube by rotation;One end of nib is provided with out core apparatus and returns core apparatus, the core apparatus that goes out makes lead for retractable pencil shift to nib from pen tube, completes out core;The core apparatus that returns is moved back to lead for retractable pencil in pen tube from nib.The present invention solves pencil in the prior art and stores lead for retractable pencil together, easily block and be unable to the lead for retractable pencil that one-pen accommodates different soft and hard type, it also overcomes and replaces the cumbersome deficiency of lead for retractable pencil manually at nib, it can complete to receive lead inside pen core and then change the task of lead, have the characteristics that simple structure, a multicore, inside change lead, applied widely.

Description

A method of replacement different model pencil-lead
Technical field
The present invention relates to technical field of stationery, more specifically to a kind of method for replacing different model pencil-lead.
Background technique
Pencil plays great role in daily study and work, have currently on the market it is a kind of can with the pencil of automatic propelling, It is brought great convenience to user, however all storage is in pen tube for the lead for retractable pencil of this propelling pencil, after lead for retractable pencil is finished, in core out During lead for retractable pencil be easy to be stuck, cause cannot normally go out core.Lead for retractable pencil can also be taken out from core storage tube again at pen tip It is packed into, but cored is inconvenient, it is time-consuming and laborious.
Meanwhile pencil is the main tool in Graphing of Engineering and art work, is obtained because its diversification of varieties is complete in specifications To being widely applied.But in existing numerous type propelling pencils, the penholder of every kind of propelling pencil can only be adapted to, be clamped A kind of lead for retractable pencil of model can only such as clamp a kind of pencil of 2B, HB or 2H model, be restricted the use of propelling pencil, such as The lead for retractable pencil that different model need to be used, just must be equipped with corresponding to a variety of propelling pencils, cause using the inconvenience with carrying, and buy at This is also correspondinglyd increase.
Through retrieving, Chinese Patent Application No.: CN200920084809.1, the applying date: on 04 09th, 2009, innovation and creation Title are as follows: conveniently change the propelling pencil of core, this application is equipped with a knockout on the pen tube top of common propelling pencil, out core Device bottom is a fixed disk, and fixed disk is provided with out core bore, and fixed disk upper end is fixedly connected with shaft, and pen core storehouse covers in shaft simultaneously It can rotate about, the circular inner wall along pen core storehouse is equipped with multiple core storage tubes, and the distance of shaft centers of core storage tube to shaft axis is identical, the Shen Please case can quickly select required lead for retractable pencil, once go out a core.But disadvantage is that in the pen tube lead for retractable pencil be not run out and It needs to take out former lead for retractable pencil when needing to change other type lead for retractable pencils and changes core from knockout again, operating process is comparatively laborious and expends people Power, and core bore should be gone out be located at edge side and not can guarantee lead for retractable pencil to fall into pen tube center, it is also easy to produce the core of the card phenomenon.
Patent No. CN201020231311.6, authorized announcement date are on January 12nd, 2011, invention and created name are as follows: automatic Pencil;This application includes a shell, and an axial end of shell inner cavity is pen tip outlet, and inner cavity is equipped with the first shoulder, the second shoulder Platform.Bounce back body, retraction body be placed in described shell inner cavity comprising axial order setting pen tip, locking device, pen tip rear end with Spring between the locking device front end.Pen tip outer rim is equipped with the first limiting unit that can be limited by the first shoulder, locking device Front end is equipped with the second limiting unit that can be limited by second shoulder.It is equipped in inner cavity for forcing the second limiting unit of locking device Against the elastic device of second shoulder.This application handwriting lower part be provided with the first limiting unit and the second limiting unit, two Limiting unit is mainly acted on by spring, but two limiting units are arranged in this application, and lead for retractable pencil is by paper pressure when being to write Axial thrust load overcome elastic device force power, the body that makes entirely to bounce back bounces back opposite shell to shell inner cavity, avoid automatic The disconnected core phenomenon occurred when pencil writing is exerted oneself not can solve above-mentioned pencil and go out core and easily block, and changes the inconvenient problem of core.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome in the prior art pencil by lead for retractable pencil storage together, be easily stuck, and cannot One-pen accommodates the lead for retractable pencil of different soft and hard type, also overcomes and replaces the cumbersome deficiency of lead for retractable pencil manually at nib, provides A method of replacement different model pencil-lead solves the above deficiency, convenient for the use of people.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of method of replacement different model pencil-lead of the invention, pencil are provided with Chu Xin dress close to one end of pen cover It sets, which is inputted different lead for retractable pencils in pen tube by rotation;One end of nib is provided with out core apparatus and returns Core apparatus, the core apparatus that goes out make lead for retractable pencil shift to nib from pen tube, complete out core;The core apparatus that returns makes lead for retractable pencil from pen Head is moved back in pen tube.
A kind of method of replacement different model pencil-lead of the invention, comprising the following steps:
Step 1: rotation storage core apparatus first gear, make the storage core siphunculus for storing required lead for retractable pencil be located at core bore just on Side, makes pen tip downward, pins the key of pressing far from pen tip one end and does not put, and does not stop to press and presses key close to pen tip one end, completes out core;
Step 2: make pen tip upward, pins and press key close to pen tip one end and do not put, do not stop to press pressing far from pen tip one end Key makes lead for retractable pencil be detached from pen tip, is moved back in pen tube from nib, and then falls into storage core siphunculus;
Step 3: stirring first gear, drives storage core siphunculus mobile, select the lead for retractable pencil of other required models, repeat above-mentioned Step 1: going out core described in step 2 and returning core operation.
Further, the core apparatus that goes out includes pressing key, pressing plate, damper tube, spring, lock sheet, presses plate setting and exists In pen tube, the key of pressing is arranged outside shell, this presses the hole that key opens up on shell, is inserted into a shell, matches with plate is pressed It closes, described pressing key and press the face that plate is in contact is inclined-plane;The spring is placed in pen tube, and one end of the spring is against pressing Plate, the other end is against damper tube;The lock sheet is connected with pen tube, which is set to inside damper tube, and pen tube pushes lock When tight piece stretches out inside damper tube, lock sheet opens.
Further, the structure for returning core apparatus is identical as core apparatus out, and returning core apparatus with core apparatus out is in axis It is symmetrical arranged, the pen tube for returning core apparatus and the pen tube of core apparatus out disconnect.
Further, the shell is internally provided with baffle, which supports back the pen tube of core apparatus and core fills out The pen tube set.
Further, by disk interval between the storage core apparatus and time core apparatus, disk is provided centrally with Enter core bore, storage core apparatus includes first gear, second gear, storage core siphunculus, offers an arc groove, part first on shell Gear is located at outside a shell, first gear along its it is circumferentially-spaced offer multiple through-holes, storage core siphunculus is inserted into the through-hole, described Second gear be meshed with first gear;Storage core siphunculus can be made to be located at into right above core bore by revolving first gear.
Further, the first gear is supported by the first support shaft, and second gear passes through the second support shaft branch The other end of support, the first support shaft and the second support shaft is connected with disk.
Further, the first gear outer periphery is arranged at intervals with label, and label mark contains corresponding model The storage core siphunculus of lead for retractable pencil is located at into right above core bore.
Further, the label is located at first gear diametrical direction with its storage core siphunculus for containing corresponding model lead for retractable pencil Both ends.
Further, one end that the shell is connected with pen cover is provided with rubber slot, which is pyramidal structure, The cone tip part of the pyramidal structure offers circular hole channel.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
(1) method of a kind of replacement different model pencil-lead of the invention, storage core siphunculus can store several same types or Different types of lead for retractable pencil can also be used as the deposit of different model lead for retractable pencil, can use instead according to demand not on the one hand convenient for spare With the lead for retractable pencil of model, demand during drawing etc. to a variety of lead for retractable pencils can solve, it is not necessary to lay in more not in a pencil The pencil of same type, easy to carry, cost reduces.Meet the selection of lead for retractable pencil model under different demands, in addition lead for retractable pencil separates to fill Avoid the generation of the core of the card caused by numerous lead for retractable pencils are packed together.
(2) method of a kind of replacement different model pencil-lead of the invention, going out core apparatus and returning core for handwriting lower part fill It is the same to set action principle, but due to being axisymmetricly arranged, so function and effect are on the contrary, press the different usage modes of key by two The overturning for being subject to handwriting can realize out core and two kinds of effects of Hui Xin.The effect of Hui Xin, which solves, replaces other model lead for retractable pencils When take out pen tip at lead for retractable pencil, be reloaded into the inconvenient problem of other model lead for retractable pencils, only shirtsleeve operation needed to achieve that, method Simply, practical.
(3) method of a kind of replacement different model pencil-lead of the invention passes through handwriting edge prominent position gear The replacement that pen core can be achieved is rotated, and lead for retractable pencil type designations, label and institute in storage core siphunculus can also be can be visually seen in outside The lead for retractable pencil type of storage corresponds, and openable pen cover takes out rubber when lead for retractable pencil is finished, can be accurate according to lead for retractable pencil model shown in label Be put into corresponding model lead for retractable pencil, in addition, be not run out lead for retractable pencil just need to change different model lead for retractable pencil when, can be very easily in inside It is replaced.When lead for retractable pencil is finished, it more can easily be put into new lead for retractable pencil again through channel along the rubber slot of inverted conical shape.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of replacement different model pencil-lead pencil of the invention;
Fig. 2 is the top view of rubber slot in the present invention;
Fig. 3 is the structural schematic diagram that core apparatus is stored up on handwriting top in the present invention;
Fig. 4 is the top view that core apparatus is stored up on handwriting top in the present invention;
(a) in Fig. 5 is the structural schematic diagram for going out core apparatus in the present invention;(b) in Fig. 5 is to go out core apparatus in the present invention Cross-sectional view.
Label declaration in schematic diagram:
1, key is pressed;2, plate is pressed;3, damper tube;4, spring;5, baffle;6, pen tube;7, disk;8, lead for retractable pencil;9, enter core bore; 10, first gear;11, second gear;12, core siphunculus is stored up;13, the first support shaft;14, the second support shaft;15, rubber slot;16, Pen cover;17, circular hole channel;18, shell;19, written;20, pen tip;21, lock sheet;22, it marks.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
Embodiment 1
In conjunction with Fig. 1, a kind of pencil of replacement different model pen core of the present embodiment, including pen cover 16, shell 18, pen tube 6 With nib 19, inside the shell 18, one end close to pen cover 16 is provided with storage core apparatus, which will by rotation Different lead for retractable pencils 8 inputs in pen tube 6;One end of nib 19 is provided with out core apparatus and returns core apparatus, described goes out core dress Setting makes lead for retractable pencil 8 shift to nib 19 from pen tube 6, and the core apparatus that returns is moved back to lead for retractable pencil 8 in pen tube 6 from nib 19.This implementation Example overcomes existing pencil and stores lead for retractable pencil 8 together, Yi Ka and the lead for retractable pencil 8 for being unable to one-pen receiving different soft and hard type, also It overcomes and replaces the cumbersome deficiency of lead for retractable pencil 8 manually at nib.Below will in the present embodiment store up core apparatus, go out core apparatus and The structure design for returning core apparatus is specifically introduced:
In conjunction with Fig. 1 and Fig. 5, the core apparatus that goes out includes pressing key 1, pressing plate 2, damper tube 3, spring 4, lock sheet 21, is pressed Plate 2 is arranged in pen tube 6, and the key 1 of pressing is arranged outside shell 18, this presses the hole that key 1 opens up on shell 18, insertion In shell 18, cooperate with plate 2 is pressed, described pressing key 1 and press the face that plate 2 is in contact is inclined-plane;Spring 4 is placed in pen tube 6, the bullet One end of spring 4 is against plate 2 is pressed, and the other end is against damper tube 3;The lock sheet 21 is connected with pen tube 6, which is set to Inside damper tube 3, when pen tube 6 pushes lock sheet 21 to stretch out inside damper tube 3, lock sheet 21 opens.Described returns core apparatus Structure it is identical as core apparatus out, and return core apparatus and be axisymmetricly arranged with core apparatus out, return the pen tube 6 and the dress of core out of core apparatus The pen tube 6 set disconnects.Out core apparatus with return as core apparatus action principle, but due to being axisymmetricly arranged, so function and effect On the contrary, can realize out core and two kinds of effects of Hui Xin by the overturning that two different usage modes for pressing key 1 are subject to handwriting. The effect of Hui Xin, which solves, takes out lead for retractable pencil 8 at pen tip 20 when replacing other model lead for retractable pencils 8, be reloaded into the operation of other model lead for retractable pencils 8 Inconvenient problem, only needs shirtsleeve operation to achieve that, method is simple, practical.
Return core apparatus and two of core apparatus press key 1 and are respectively fitting into and accordingly press on plate 2 out, press key 1 with press 2 surface of plate compared with To be smooth, two are pressed under plate 2 as baffle 5, and baffle 5 is arranged inside shell 18, and 5 surface of baffle is fluted with 6 radian kissing of pen tube It closes, baffle 5 support back the pen tube 6 and the pen tube 6 of core apparatus out of core apparatus, influences to use pen for preventing from pressing plate 2 and moving down Pipe 6, and can guarantee that pen tube 6 is normally mobile.
It is spaced between the storage core apparatus and time core apparatus by disk 7, disk 7 is provided centrally with one slightly larger than lead 8 diameter of core enters core bore 9, for the discrepancy of lead for retractable pencil 8.It returns core apparatus and enters core bore 9 at a distance, to guarantee back in core apparatus The normal movement of lock sheet 21 contains lock sheet 21 and part pen tube 6 in damper tube 3, and movement can be achieved under the cooperation of spring The effect that lead for retractable pencil 8 and device reset.
In conjunction with Fig. 3 and Fig. 4, the storage core apparatus includes first gear 10, second gear 11, storage core siphunculus 12, shell An arc groove is offered on 18, part first gear 10 is located at outside a shell 18, and first gear 10 circumferentially-spaced is opened up along its There are multiple through-holes, storage core siphunculus 12 is inserted into the through-hole, and the second gear 11 is meshed with first gear 10;First gear 10 are supported by the first support shaft 13, and second gear 11 is supported by the second support shaft 14, the first support shaft 13 and the second support The other end of axis 14 is connected with disk 7.Second gear 11 can be driven by 10 pivoting of revolving first gear, increases first The rotary resistance of gear 10 can guarantee that the storage core siphunculus 12 of corresponding position can accurately reach the surface into core bore 9 and be located at Slightly larger than the underface in the circular hole channel 17 of 8 diameter of lead for retractable pencil.Storage core siphunculus 12 can store several same types or different types of lead Core 8 can also be used as the deposit of different model lead for retractable pencil 8, can use the lead of different model instead according to demand on the one hand convenient for spare Core 8, demand to a variety of lead for retractable pencils 8 during drawing etc., can solve in a pencil, it is not necessary to lay in more it is different types of Pencil, easy to carry, cost reduces.Meet the selection of 8 model of lead for retractable pencil under different demands, in addition lead for retractable pencil 8 is separated to fill and be avoided The generation of the core of the card caused by numerous lead for retractable pencils 8 are packed together.
Furthermore the diametric other end respectively in the first gear 10 where storage core siphunculus 12 is provided with mark pen core type Number label 22, the storage core siphunculus 12 that the label 22 mark contains corresponding model lead for retractable pencil 8 is located at into right above core bore 9.Described One end that shell 18 is connected with pen cover 16 is provided with rubber slot 15, which is pyramidal structure, the cone of the pyramidal structure Place offers circular hole channel 17, and removing rubber smoothly can be put into storage core siphunculus 12 from circular hole channel 17 for lead for retractable pencil 8.This implementation The replacement of pen core can be achieved by the rotation of handwriting edge prominent position gear for example, and can also can be visually seen lead for retractable pencil in outside 8 type of lead for retractable pencil stored up in 8 type designations 22, label 22 and Chu Xin siphunculus 12 corresponds, openable pen cover when being finished of lead for retractable pencil 8 16 take out rubber, can 8 model of lead for retractable pencil according to label 22 be accurately put into corresponding model lead for retractable pencil 8, in addition, being not run out lead for retractable pencil 8 When just needing to change the lead for retractable pencil 8 of different model, can very easily it be replaced in inside.When lead for retractable pencil 8 is finished, along inverted conical shape Rubber slot 15 more can easily be put into new lead for retractable pencil 8 again through channel.
A kind of method of replacement different model pencil-lead of the present embodiment, when use, lay flat pencil, rotate first gear Storage core siphunculus 12 containing required 8 type of lead for retractable pencil is moved to the surface into core bore 9 by 10, and overturning pen body keeps pen tip 20 downward i.e. Lead for retractable pencil 8 can be made to fall into pen tube by entering core bore 9, pin and press key 1 far from 20 one end of pen tip and do not decontrol, do not stop to press immediately close Key 1 is pressed in 20 one end of pen tip, presses key 1 and can be pressed down against and presses plate 2, constantly presses and drives lock sheet 21 in damper tube 3 by lead Core 8 drives to 20 direction of pen tip, then acts on to reset continue to press again through spring and presses key 1, can release lead for retractable pencil 8 into pen Point 20 carry out using.
It when needing other model lead for retractable pencils 8, pins and presses key 1 close to one end of pen tip 20, do not stop to press far from pen tip 20 1 Key 1 is pressed at end, is pressed key 1 and can be pressed down against and presses plate 2, is constantly pressed and is driven the lock sheet 21 of damper tube 3 by lead for retractable pencil 8 to far from pen tip 20 directions drive, and then act on to reset continue to press again through spring and press key 1, lead for retractable pencil 8 is carried over pen tip after pressing for several times It rubs and disappears at 20, with pen tip 20, overturning handwriting can be realized lead for retractable pencil 8 and return in former storage core siphunculus 12, or can first fall Turn pencil and carry out aforementioned operation again, can also realize that lead for retractable pencil 8 returns in former storage core siphunculus 12.
Next it keeps the handwriting horizontal or reverses, stir first gear 10 and select required type lead for retractable pencil 8, repeat front It is described go out core operation, can carry out using.First gear 10 is rotated when new lead for retractable pencil 8 is added lays flat handwriting then by the storage Core siphunculus goes back to original position, can also place handwriting vertically and lead for retractable pencil 8 is added, directly use the model lead for retractable pencil 8.Lead for retractable pencil is used in selection 8 and when new lead for retractable pencil 8 is added can arrive 8 type of lead for retractable pencil, label 22 and Chu Xin siphunculus 12 in shell external observation label 22 Middle stored up 8 type of lead for retractable pencil corresponds.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution Similar frame mode and embodiment, are within the scope of protection of the invention.

Claims (7)

1. a kind of method for replacing different model pencil-lead, it is characterised in that: pencil is provided with close to the one end of pen cover (16) Core apparatus is stored up, which will be in different lead for retractable pencil (8) inputs pen tube (6) by rotation;One end close to nib (19) is set It is equipped with out core apparatus and returns core apparatus, the core apparatus that goes out makes lead for retractable pencil (8) shift to written (19) from pen tube (6), completes out Core;The core apparatus that returns is moved back to lead for retractable pencil (8) in pen tube (6) from written (19);Specifically includes the following steps:
Step 1: the first gear (10) of rotation storage core apparatus, is located at the storage core siphunculus (12) for storing required lead for retractable pencil (8) into core Right above hole (9), make pen tip (20) downward, pin the key (1) of pressing far from pen tip (20) one end and do not put, does not stop to press close to pen tip Key (1) is pressed in one end, completes out core;
Step 2: make pen tip (20) upward, pins and press key (1) close to pen tip (20) one end and do not put, do not stop to press far from pen tip (20) key (1) is pressed in one end, and lead for retractable pencil (8) is made to be detached from pen tip (20), is moved back in pen tube (6) from nib (19), and then fall into Chu Xin Siphunculus (12);
Step 3: stirring first gear (10), drives storage core siphunculus (12) mobile, select the lead for retractable pencil (8) of other required models, weight Go out core described in multiple above-mentioned steps one, step 2 and returns core operation;
Wherein, the core apparatus that goes out includes pressing key (1), pressing plate (2), damper tube (3), spring (4), lock sheet (21), presses plate (2) it is arranged on pen tube (6), key (1) setting is external in a shell (18), this is pressed key (1) and opens on shell (18) for described pressing If hole, in insertion shell (18), and press plate (2) cooperation, it is described to press key (1) and press the face that plate (2) is in contact as inclined-plane;Institute The spring (4) stated is placed on pen tube (6), and one end of the spring (4) is against pressing plate (2), and the other end is against damper tube (3);It is described Lock sheet (21) be connected with pen tube (6), which is set to that damper tube (3) are internal, and pen tube (6) pushes lock sheet (21) When stretching out inside from damper tube (3), lock sheet (21) opens;
The structure for returning core apparatus is identical as core apparatus out, returns core apparatus and is axisymmetricly arranged with core apparatus out, returns core dress The pen tube (6) set and the pen tube (6) of core apparatus out disconnect.
2. a kind of method for replacing different model pencil-lead according to claim 1, it is characterised in that: the shell (18) baffle (5) are internally provided with, which supports back the pen tube (6) and the pen tube (6) of core apparatus out of core apparatus.
3. a kind of method for replacing different model pencil-lead according to claim 2, it is characterised in that: the storage core Device and returning between core apparatus is spaced by disk (7), and disk (7) is provided centrally with into core bore (9), and storing up core apparatus includes the One gear (10), stores up core siphunculus (12) at second gear (11), offers an arc groove, part first gear on shell (18) (10) it is located at that a shell (18) are external, and first gear (10) circumferentially-spaced offers multiple through-holes, storage core siphunculus (12) insertion along its In the through-hole, the second gear (11) is meshed with first gear (10);Chu Xin can be made by revolving first gear (10) Siphunculus (12) is located at into right above core bore (9).
4. a kind of method for replacing different model pencil-lead according to claim 3, it is characterised in that: described first Gear (10) is supported by the first support shaft (13), and second gear (11) is supported by the second support shaft (14), the first support shaft (13) it is connected with disk (7) with the other end of the second support shaft (14).
5. a kind of method for replacing different model pencil-lead according to claim 4, it is characterised in that: described first Gear (10) outer periphery is arranged at intervals with label (22), and the label (22) mark contains the storage core siphunculus of corresponding model lead for retractable pencil (8) (12) it is located at into right above core bore (9).
6. a kind of method for replacing different model pencil-lead according to claim 5, it is characterised in that: the label (22) it is located at first gear (10) diametric both ends with its storage core siphunculus (12) for containing corresponding model lead for retractable pencil (8).
7. a kind of method for replacing different model pencil-lead according to claim 6, it is characterised in that: the shell (18) one end being connected with pen cover (16) is provided with rubber slot (15), which is pyramidal structure, the pyramidal structure Cone tip part offers circular hole channel (17).
CN201710627694.5A 2017-07-28 2017-07-28 A method of replacement different model pencil-lead Expired - Fee Related CN107825893B (en)

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