CN201009560Y - Mechanical propelling pencil - Google Patents
Mechanical propelling pencil Download PDFInfo
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- CN201009560Y CN201009560Y CNU2007201189707U CN200720118970U CN201009560Y CN 201009560 Y CN201009560 Y CN 201009560Y CN U2007201189707 U CNU2007201189707 U CN U2007201189707U CN 200720118970 U CN200720118970 U CN 200720118970U CN 201009560 Y CN201009560 Y CN 201009560Y
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Abstract
The utility model relates to an automatic pencil and aims to solve disadvantages of the prior art by providing solution scheme for an automatic pencil convenient for use and environmental friendly. The utility model comprises a front gripping head (303) positioned at the front end, a back gripping head (201) positioned behind the front gripping head, an elastic body (4) nested on the front gripping head, a lacing sleeve (502) positioned behind the front gripping head, a cartridge tube (6) restricting the elastic body and being nested on the end of the front gripping head, a pressing sleeve (10) nested on the end of the cartridge tube, a pressing cap (11) matching with the pressing sleeve, a pencil tube (7) nested outside the cartridge tube and screwed up with the lacing sleeve through screw-thread, a pencil shell (8) nested outside the pencil tube, a pencil hanging piece (9) arranged on the pencil shell, a lacing ring (12) and a locating ring (13), thereby, the automatic pencil which adopts the technical solution proposal can reduce the length of each remaining lead cord by 3 mm to 5 mm and is convenient for use. As an environmental friendly writing tool, the utility model is sure to replace existing automatic pencil in office stationery field.
Description
Technical field
The utility model belongs to propelling pencil, and it relates to a kind of propelling pencil that residual core length can be reduced, and relates in particular to a kind ofly will send the core chuck preposition propelling pencil.
Background technology
In the past few years, some research institutions of Japan mechanical pencil series such as double fastener hair style propelling pencil that released one after another are seen China Patent No. 96200727.7,96217642.7,01200736.6,96217642 and U.S. Patent number 6783292,6039485,6517271,6517272,6334728,6382859,6334728,6203227,5947620,5988913.They mainly are to have used the double collet structure in pen instead, have to keep the preceding chuck that pen core uses and send the rear portion chuck that pen core is used, and promptly the fore-clamp head-clamp is held the front end of lead for retractable pencil, and back chuck is responsible for clamping and propelling lead for retractable pencil, so can guarantee the course feed of lead for retractable pencil effectively.Can work as pencil with being as short as back chuck institute can not clamping the time, preceding chuck can not normally advance lead for retractable pencil, and this has caused long residual core can not continue to use, and causes waste.And existing propelling pencil is constructed also more complicated, and chuck mostly adopts the propulsive mechanism of more complicated, spline structure thereafter; Preceding chuck also adopts the maintaining body of more complicated; The front and back chuck may cause lead for retractable pencil distorting stress diametrically when rotated, easily causes the lead for retractable pencil fracture; Before and after the equal more complicated of making of chuck, the manufacturing cost of the propulsive mechanism of back chuck and precision thereof are also higher, these all have been some defectives that are difficult to overcome of propelling pencil existence since the many decades.In the epoch that current technological innovation is maked rapid progress, this Japanese propelling pencil has maintained the very long time of pencil market, presses for improvement.
For overcoming above defective, the applicant once in November 29 in 2007 order to have proposed application number be 200420111655.8 patent application, it provides a kind of single chuck formula propelling pencil, its chuck is positioned at the front end of pen, the operation principle of chuck is basic identical after the operation principle of chuck and the present double fastener hair style propelling pencil, promptly also is to be made of the spring that produces restoring force, can make sleeve that chuck clamps and the propulsive mechanism etc. that are similar to the chuck bunching ring.See also accompanying drawing 5 ~ Fig. 8, its core technology is embodied in, and the keeper of lead for retractable pencil 1 is preceding chuck 301, and it is positioned at the front end of pen, and the axis profile of chuck 301 is arrow shaped, its pawl head propelling pencil foremost and expose outside handwriting.This kind structural design can guarantee that lead for retractable pencil promptly uses last 1mm and still can continue to use.
But the applicant has found an inconvenience when using this single chuck formula propelling pencil: when the lead for retractable pencil that stretches out has been write and when carrying out the lead for retractable pencil feeding and operating, whole lead for retractable pencil is easy to all drop out.Be normal use, must carry out lead for retractable pencil feeding when operation at every turn, all needs to stop with other objects or finger the free-falling of lead for retractable pencil, the using method of this and early stage propelling pencil is consistent, needs improvement.
Summary of the invention
The utility model aims to provide a kind of propelling pencil, and some defectives that it is to solve on the prior art provide a kind of propelling pencil product solution that makes things convenient for use and environmental protection.Chuck is positioned at the front end of pen before the utility model, and its function has two: the first, is used to keep lead for retractable pencil, prevents to write defective modes such as the disconnected lead of appearance, loose lead; The second, be used to send lead for retractable pencil, realize the regular feeding of lead for retractable pencil.Simultaneously, chuck is used to keep lead for retractable pencil after the utility model, guarantees that lead for retractable pencil can not drop when preceding chuck is in relaxed state, guarantees can not allow lead for retractable pencil get back to out plumbous front position when preceding chuck is replied, to realize even feeding.
The technical scheme that its technical problem that solves the utility model adopts is: the utility model is a kind of propelling pencil that residual core can be reduced, a kind of propelling pencil of environmental protection practicality, and it comprises: one is positioned at front end chuck before; One is positioned at preceding chuck chuck afterwards; One is enclosed within the elastomer on the preceding chuck, one tightens sleeve after the chuck before being positioned at, the pen core tube of the end that is enclosed within preceding chuck of one constraint elastomer, one be enclosed within pen core tube end by gland, one with the pressure cap that cooperates by gland, one be enclosed within pen core tube outer and with tighten the pen container that sleeve screws by screw thread, one is enclosed within the shell outside the pen container, one is installed in the pen hanging on the shell, and one is the lead for retractable pencil of preceding chuck clamping.
The utility model technical characterictic different with existing propelling pencil is: chuck comprises at least two jaws before the utility model, the pawl head of each jaw is positioned at outside the handwriting, the pawl arm is positioned among the handwriting, between each jaw elongated gap is arranged, and comprises at least two square grooves between each jaw; Back chuck comprises at least two hooks, this hook pass just before each respective grooves of chuck, when pushing the feeding state hook with groove between can slide relatively.Back chuck comprises at least two elasticity jaws, and among the cavity body that the pawl arm of each jaw of chuck formed before after this each jaw of chuck was positioned at just, each hook of back chuck passes each respective grooves, and each hook is between cascaded surface of tightening sleeve and elastomer.
Aforesaid propelling pencil, it also comprises a bunching ring, this bunching ring is at preceding chuck and tighten between the sleeve.
Aforesaid propelling pencil, it is characterized in that: described propelling pencil also comprises a locating ring, this ring is diametrically at preceding chuck and tighten between the sleeve, this ring is presented axially between the hook of elastomer and back chuck, this ring can avoid elastomer directly to contact with the hook of back chuck simultaneously, increased the contact area of elastomer and hook, to improve the mechanical property and the mechanism stability of hook.
Aforesaid propelling pencil is characterized in that: the pawl head of chuck comprises two conical surfaces before described: a conical surface outside handwriting, this conical surface with tighten sleeve outside conical surface tapering consistent, this looks pencil and has a kind of integral body and harmonious and graceful; Another conical surface within handwriting, this conical surface with tighten sleeve within the conical surface match and tapering consistent, so when preceding chuck is replied, along with preceding chuck is the increase of contact-making surface with the fitness of tightening sleeve, lead for retractable pencil will be clamped by the jaw of preceding chuck.On the pawl arm of preceding chuck, at least two square grooves are arranged, and each groove is about the axle center symmetry, so the reason of structural design be for the chucking power that guarantees the clamping lead for retractable pencil can uniform load in the lead for retractable pencil outer ring, can prevent fractureing and damaging of lead for retractable pencil like this.Simultaneously, the jaw of each preceding chuck is also about the axle center symmetry.
Aforesaid propelling pencil is characterized in that: be connected to an entity by an annulus between the elasticity jaw of described back chuck and the hook, and the elasticity jaw with link up with all about the axle center symmetry, at the middle part of elasticity jaw depression is arranged.
Aforesaid propelling pencil is characterized in that: the described sleeve inner of tightening is tightened the corresponding cone match that sleeve inner contains at least one conical surface and preceding chuck for comprising the stepped construction of two stage steps at least.
Aforesaid propelling pencil is characterized in that: the chuck outer surface comprises a staged structure before described, and the described sleeve inner of tightening comprises a corresponding stepped construction, and the mating surface between the two is followed successively by the conical surface, the conical surface, the conical surface.
Aforesaid propelling pencil is characterized in that: described elastomer is a cylindroid helical-coil compression spring, and this spring is presented axially between the cascaded surface and pen core tube of tightening sleeve; This spring is diametrically at preceding jaw arm and tighten between the sleeve.
Aforesaid propelling pencil is characterized in that: the end of chuck contains a projection before described, closely cooperating between chuck and the pen core tube before this projection is used to guarantee.Chuck comprises a conical surface outside handwriting before described, one with tighten the conical surface in handwriting that sleeve cooperates, one conical surface in handwriting that cooperates with the bunching ring inner conical surface, preceding chuck not during the clamping lead for retractable pencil each jaw open and be lax shape, and this relaxed state is the normality of preceding chuck.The pawl head of chuck and lead for retractable pencil cooperation place internal diameter are less than wall place internal diameter within the pawl arm before when lead for retractable pencil is clamped; And when each jaw of current chuck was closed fully, pawl head and lead for retractable pencil cooperation place internal diameter were slightly less than lead core diameter; Wall place internal diameter is greater than lead core diameter and less than two times of lead core diameters within the pawl arm, and preceding like this chuck can only pass through a lead for retractable pencil.
Aforesaid propelling pencil, it is characterized in that: described bunching ring comprises the flange at an annulus and annulus top, bunching ring is enclosed within on the preceding chuck, the corresponding conical surface of the conical surface and preceding chuck is complementary within the bunching ring, its flange is between the hook of cascaded surface of tightening sleeve and back chuck in the axial direction for bunching ring, and bunching ring can slide in the axial direction.
The beneficial effects of the utility model are, the first, adopt the propelling pencil of the utility model technical solution, and the length of every residual core will be reduced to 3 ~ 5mm, and the length of the existing residual core of propelling pencil is 10 ~ 15mm, this is undoubtedly a leap of propelling pencil.The second, easy to use.The top that the user only need press lead for retractable pencil can go out lead, and can not drop.The 3rd, simple in structure.Except that preceding chuck had certain complexity, other accessories are all produced easily, and were with low cost, were fit to produce in enormous quantities.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further detailed.
Fig. 1 is a front view of the present utility model.
Fig. 2 is the C-C cutaway view of Fig. 1, axial section view promptly of the present utility model.
Fig. 3 is the D-D cutaway view of Fig. 2.
Fig. 4 is an explosive view of the present utility model.
Fig. 5 is the front view of single chuck formula propelling pencil.
Fig. 6 is the E-E cutaway view of Fig. 5.
Fig. 7 is the F-F cutaway view of Fig. 6.
Fig. 8 is the explosive view of single chuck formula propelling pencil.
Each Arabic numerals sign is respectively among Fig. 1 ~ Fig. 8: 1 is lead for retractable pencil; 2 is the back chuck; 3 is preceding chuck; 4 is spring; 5 for tightening sleeve; 6 is pen core tube; 7 is pen container; 8 is a shell; 9 is pen hanging; 10 for pressing gland; 11 is pressure cap; 111 is that collection 1 ~ 11 is the handwriting of one; 301 is the preceding chuck of single chuck formula propelling pencil; 112 is the handwriting of single chuck formula propelling pencil.
Fig. 9 is the front view of tightening sleeve 5.
Figure 10 is the G-G cutaway view of Fig. 9.Wherein: 5a is the male cone (strobilus masculinus) of tightening sleeve; 5b is for tightening the conical surface in sleeve 5 left end holes.
Figure 11 ~ Figure 15 is the detailed view of preceding chuck 3.
Wherein:
Figure 11 is the front view of preceding chuck 3.Wherein: 3b is the male cone (strobilus masculinus) of preceding chuck; 3c is the conical surface at preceding chuck section I-I place; 3d is a square groove; 3e is the pawl arm; 3f is the pawl head.
Figure 12 is the left view of Figure 11.
Figure 13 is the H-H cutaway view of Figure 11.Wherein: 3a is a jaw.
Figure 14 is the I-I cutaway view of Figure 11.
Figure 15 is the J-J cutaway view of Figure 11.
Figure 16 ~ Figure 21 is the detailed view of back chuck 2.
Wherein:
Figure 16 is the right view of Figure 17.
Figure 17 is the front view of back chuck 2.
Figure 18 is the left view of Figure 17.
Figure 19 is the vertical view of Figure 17.
Figure 20 is the graphics of back chuck 2.
Figure 21 is the K-K cutaway view of Figure 16.Wherein: 2a is the elasticity jaw of back chuck; 2b is the depression of elasticity jaw; 2c is the annulus of coupling hook and jaw; 2d is elongated hook.
Figure 22 is the front view of advanceable propelling pencil.
Figure 23 is the L-L cutaway view of Figure 22.
Figure 24 is 4: 1 partial enlarged drawings in I place of Figure 23.
Among Figure 23 ~ Figure 24,1 is lead for retractable pencil; 2 is the back chuck; 302 is the preceding chuck of staged of advanceable propelling pencil; 4 is spring; 501 tighten sleeve for the staged of advanceable propelling pencil; 6 is pen core tube; 7 is pen container; 8 is a shell; 9 is pen hanging; 10 for pressing gland; 11 is pressure cap.This shows, the advanceable propelling pencil is just at preceding chuck and tighten on the structure of sleeve further improvement is arranged.
Figure 25 tightens the front view of sleeve 501 for staged.
Figure 26 is the M-M cutaway view of Figure 25.Wherein: 501a is that staged is tightened one of sleeve 501 conical surface; 501b is the conical surface near the face of cylinder; 501c is another conical surface of 501; 501d is a face of cylinder.
Figure 27 ~ Figure 31 is the detailed view of chuck 302 before the staged.
Wherein:
Figure 27 is the front view of chuck 302 before the staged.Wherein: 302a is one of chuck 302 conical surface before the staged; 302b is the conical surface of corresponding specification with 501b; 302c is another conical surface of 302; 302d is a face of cylinder; 302e is a square groove.
Figure 28 is the left view of Figure 27.
Figure 29 is the vertical view of Figure 27.
Figure 30 is the graphics of chuck 302 before the staged.
Figure 31 is the H-H cutaway view of Figure 27.
Figure 32 is the axial cutaway view of two-beam compact form propelling pencil.Wherein: 1 is lead for retractable pencil; 201 is chuck behind the perpendicular type; 303 is chuck before the conical surface type; 4 is spring; 502 is multistage ladder type lacing jacket tube; 6 is pen core tube; 7 is pen container; 8 is a shell; 9 is pen hanging; 10 for pressing gland; 11 is pressure cap; 12 is bunching ring; 13 is locating ring.
Figure 33 is the front view of chuck 303 before the conical surface type.Wherein: 303a is the conical surface of chuck 303 before the conical surface type; 303b is the square groove between each jaw; 303c is the projection that preceding chuck is not held.
Figure 34 is the P-P cutaway view of Figure 33.
Figure 35 partly cuts open figure for bunching ring.Wherein: 12a is conical surface XE within the bunching ring 12; 12b is a flange.
Figure 36 is the left view of chuck 301 behind the perpendicular type.
Figure 37 is the front view of chuck 301 behind the perpendicular type.
Figure 38 is one of assembly process figure.
Figure 39 is two of an assembly process figure.
Figure 40 is motion analysis figure.Wherein: XA ~ XK represents each appointed part plane or curved surface respectively.
The specific embodiment
The utility model by lead for retractable pencil 1, back chuck 2, preceding chuck 3, spring 4, tighten sleeve 5, pen core tube 6, pen container 7, a shell 8, pen hanging 9, form by gland 10 and pressure cap 11.As Fig. 1 ~ shown in Figure 4, lead for retractable pencil 1, spring 4, pen core tube 6, pen container 7, a shell 8, pen hanging 9 are the common part in existing market, standardization, and the utility model has been inherited the advantage of these standard components.Back chuck 2, preceding chuck 3, tighten sleeve 5 for needing to develop again new die in the utility model to guarantee the new structure spare of the volume production.
Introduce assembly relation of the present utility model below in detail.
See also accompanying drawing 2 and Fig. 4.Assembly 12 by lead for retractable pencil 1, back chuck 2, preceding chuck 3, spring 4, tighten sleeve 5, pen core tube 6, pen container 7, a shell 8, pen hanging 9, be assembled by certain operation by gland 10 and pressure cap 11.Assembly method is as follows:
The first step: among three jaw gap of chuck 3, outwards deviate to prevent back chuck 2 at the top of chuck 3 before pinning before three elongated hooks that will back chuck 2 were embedded in.The back chuck that assembles 2 and preceding chuck 3 inserted tighten among the sleeve 5, hear after the clear and melodious strike note that show that they are seated, promptly the elongated hook of back chuck 2 successfully has been buckled on the ladder platform of tightening sleeve 5.
Second step: among the assembly that the first step assembles, assemble spring 4 and pen core tube 6 successively.Wherein, before spring 4 is enclosed within on the long tube of chuck 3, direct mode with interference fit is connected between pen core tube 6 and the preceding chuck 3.The some lead for retractable pencils 1 of packing within pencil lead pipe 6 afterwards will be enclosed within on the pencil lead pipe 6 by gland 10 again.By gland 10, pen core tube 6, spring 4, preceding chuck 3, back chuck 2 and tighten sleeve 5 and form pressing mechanisms.
The 3rd step: among second assembly that assemble of step, assemble pen container 7, a shell 8, pen hanging 9 and pressure cap 11 successively.Wherein, pen container 7 is used for stoping the flexural deformation of pen core tube 6.At first pen container 7 and the mode of the shell 8 that pen hanging 9 is housed by interference fit are realized closely cooperating, will be with the pen container 7 of a shell 8 then outward and tighten between the sleeve 5 and screw by screw thread.Then pressure cap 11 is enclosed within to push and puts, can connect in the mode that screw thread screws between them, also can cancel screw thread, directly the mode with interference fits connects, so that dismounting.So far, the utility model assembling is finished.
The detailed successively below architectural feature of introducing back chuck 2, preceding chuck 3 and tightening sleeve 5 these three novel components.
Back chuck 2 shapes are comparatively complicated, shown in Figure 16 ~ 21.Please refer to Figure 21, in Figure 21,2a is the elasticity jaw of back chuck, and 2b is the depression of elasticity jaw, and 2c is the annulus of coupling hook and jaw, and 2d is elongated hook.As shown in Figure 16, it comprises three elongated hook 2d about its axle center symmetry back chuck, and this hook can stop back chuck 2 to move forward.So, when pressing mechanism carried out pressing operation, the depression 2b at the middle part of the jaw of back chuck 2 just can clamp lead for retractable pencil in case stop its whereabouts.As Figure 17 and shown in Figure 180, the left end of back chuck 2 comprises three jaw 2a that contain concavity 2b about its axle center symmetry, and right-hand member comprises three elongated hook 2d among Figure 17, and itself and 2c place annulus angle are not more than 90 degree.Obviously, back chuck 2 can be made by simple panel beating moulding process, is fit to produce in enormous quantities; It also can pass through Shooting Technique, adopts as the reasonable material batch making of elasticity this product such as ABS HF-380.
Preceding chuck 3 structures see also three-view diagram: Front view 11, left view 12 and H-H analyse and observe Figure 13; And in conjunction with I-I and J-J cross section view.As seen from the figure, preceding chuck 3 comprises three three jaw 3a about its axle center symmetry, and whole preceding chuck is arrow shaped.They are open when relaxed state.See also Figure 11, the projection of its left end is pawl head 3f, and it exposes outside handwriting (112); Preceding chuck centre is long-armed to link to each other with the pawl head, and this is long-armed to be pawl arm 3e, and therefore, jaw 3a is made up of pawl head 3f and pawl arm 3e.Between each jaw elongated gap is arranged, there is square groove 3d at its middle part.Just corresponding at the conical surface 3c at section I-I place tapering with the conical surface 5b tapering of tightening sleeve 5 left end holes of Figure 10.Stop and feed-disabling at the pressing operation of pressing mechanism so, or pressure cap 11 is because of a shell 8 stops can not be down by homing under spring 4 effects the time, tighten sleeve 5 will make before chuck 3 tensionings live lead for retractable pencil 1 with firm grip.J-J position, pawl arm place in the middle part of the jaw of preceding chuck 3 has the three broad square groove 3d of place, sees also Figure 11 and Figure 15, and these three grooves are used to hold three elongated hooks of corresponding back chuck 2, and each elongated hook passes corresponding square groove just.In the process of pushing feeding and reinstatement attitude of pressing mechanism, back chuck 2 is tightened keeps transfixion on the utility model axis direction under the mutual constraint of sleeve 5 and spring 4, and lead for retractable pencil 1 will can not drop for back chuck 2 clampings.Simultaneously, in the axial direction, lead for retractable pencil 1 will be realized the feeding of about 0.5 ~ 1.5mm again under the progradation of preceding chuck 3, and lead for retractable pencil 1 just can feed-disabling when crossing pine and its chucking power less than the chucking power of 2 pairs of lead for retractable pencils of back chuck up to 3 of preceding chucks are too far apart.The intracavity structure of chuck 3 is less than aperture, pawl arm 3e place in aperture, pawl head 3f place before please noting.So, lead for retractable pencil 1 is clamped in pawl head place, and lead for retractable pencil 1 can move freely at pawl arm endoporus.Cooperating between chuck 3 and the pen core tube 6 before the right-hand member projection of chuck 3 is used to reinforce before among Figure 11.So the preceding chuck 3 of structure can adopt the higher wear resistance preferred metal of hardness material to produce in enormous quantities, uses certain turning process can realize the production of sample, also can make the sheet metal of flattening earlier, is bent into sample again.
It is comparatively simple to tighten sleeve 5 structures, sees also Fig. 9 and Figure 10.Its middle part contains shoulder hole, and the left end hole is one to contain the hole of certain taper, and the inner car in right-hand member hole is shaped on screw thread, is used for screwing with pen container 7, so that dismounting.The male cone (strobilus masculinus) 3b tapering of chuck is complementary before tightening among the male cone (strobilus masculinus) 5a of sleeve and Figure 11, and therefore after the utility model assembled, its front end had a kind of U.S. of staying calm and collected with the as a whole conical surface.
Second embodiment of the present utility model is:
As Figure 22 ~ shown in Figure 31,1 is lead for retractable pencil; 2 is the back chuck; 302 is the preceding chuck of staged of advanceable propelling pencil; 4 is spring; 501 tighten sleeve for the staged of advanceable propelling pencil; 6 is pen core tube; 7 is pen container; 8 is a shell; 9 is pen hanging; 10 for pressing gland; 11 is pressure cap.Above assembly 1,2,4 and 6 ~ 11 consistent with front first embodiment, therefore, the advanceable propelling pencil is just at preceding chuck and tighten on the structure of sleeve further improvement is arranged.Introduce it below in detail.
In Figure 26,501a is that staged is tightened one of sleeve 501 conical surface; 501b is the conical surface near the face of cylinder, and its left end aperture is slightly larger than right-hand member, and this is for the ease of withdrawing pattern, be convenient to simultaneously 302 with 501 effective cooperations between the two; 501c is another conical surface of 501; 501d is a face of cylinder.
In Figure 27, from left to right, 302a is one of chuck 302 conical surface before the staged; 302b is the conical surface of corresponding specification with 501b; 302c is another conical surface of 302; 302d is a face of cylinder; 302e is a square groove.
See also Figure 22 ~ Figure 24, Figure 26 and Figure 27, in Figure 24, before the staged chuck 302 and staged tighten sleeve 501 match locate stepped, its contact-making surface, from the bottom to top, be followed successively by a tapering less conical surface 501a and 302a, be then one with almost vertical conical surface 501b and the 302b of horizontal plane, be bigger conical surface 501c and 302c of a tapering then, accompanying drawing is drawn according to material standard and technology.This stepped construction makes feeding mode of the present utility model more accurate, and the height that the extension elongation of lead for retractable pencil 1 will be directly tightened the face of cylinder at sleeve 501 places of matching by chuck before the staged 302 and staged is determined.What need supplementary notes is, will inevitably there be the small pattern draft an of necessity in this and the almost vertical conical surface of horizontal plane between this conical surface and axle center in the actual production, to guarantee quick depanning, guarantee effective answer of feed mechanism simultaneously.In a feeding periodic process, after pressing pressure cap 11 down, lead for retractable pencil 1 is at first effectively clamped by chuck before the staged 302, the inner conical surface 501b that chuck 302 is tightened sleeve 501 along staged before the staged glides subsequently, when the two disengaging face cooperates, lead for retractable pencil 1 continues to move down the distance of one section about 0.5 ~ 1.5mm, and the preceding chuck 302 of staged this moment is in complete relaxed state, and lead for retractable pencil can not drop because of self gravitation because of the clamping of back chuck 2 for 1 this moment.Note that back chuck 2 is general adopts thin but non-damageable sheet metal is made, so its chucking power is designed to very for a short time, and its size only need be slightly larger than lead for retractable pencil 1 deadweight and get final product.Its structural design has been considered the difference of different lead for retractable pencil size diameter and quality simultaneously, and diameter is big more, and the lead for retractable pencil deadweight is big more, and chucking power is big more.When pressure cap 11 contacted with a shell 8, pressure cap arrived the feeding terminal point, and this moment is after the user unclamps pressure cap, under the restoring force effect of spring 4, chuck 302 beginning tensionings before the lax staged of opening are tensioned to it can 1 answer of clamping lead for retractable pencil the time, and lead for retractable pencil will be return a segment distance.At this, the chucking power of note back chuck 2 is F1, and the chucking power of chuck 302 is F2 before the note staged, and 1 deadweight of note lead for retractable pencil is G.The power F2 identical with the G direction is F21; Otherwise with the G direction mutually power F2 be F22.Note that after going out lead, when promptly chuck 302 is in relaxed state before the staged, have following relation:
F1＞G---------------------------------①
Wherein, F1 is opposite with the G direction, and the F1 size is about 1.5 ~ 2 times of G values.
Going out lead phase, chuck 302 and the moment that lead for retractable pencil 1 disengages before staged have:
F21+G＝F1-----------------------------②
Wherein, F1 is opposite with the G direction, and F21 is identical with the G direction.This moment, the plumbous displacement that goes out of lead for retractable pencil 1 was designated as S1.
When replying,, there is following relational expression in the moment that lead for retractable pencil moves:
F1+G＝F22-----------------------------③
Wherein, F1 is identical with the G direction, and F22 is opposite with the G direction.After this answer displacement of lead for retractable pencil 1 is designated as S2.
By 2. getting: F21=F1-G
By 3. getting: F22=F1+G
F22＞F21 then
And lead for retractable pencil need be replied more distance and just had F22＞F21, and S1＞S2 is obviously arranged
Then the lead that goes out of lead for retractable pencil apart from S is: S=S2-S1
At this, the effect that preceding chuck 302 of staged and staged are tightened sleeve 501 is embodied.As Figure 25 ~ shown in Figure 31.Left end has the conical surface of level almost in Figure 26, and in conjunction with Figure 31, its left end also has the face of cylinder of level almost, and their tapering is complementary, to constitute perfect feed motion and return motion.Except that the stepped construction that this appends, other structures are consistent with first embodiment.
The 3rd embodiment of the present utility model is:
See also shown in Figure 32ly, than preceding several embodiment, present embodiment has appended bunching ring 12 and locating ring 13, and locating ring 13 is optional in the present embodiment.Chuck 201, the preceding chuck 303 of conical surface type, multistage ladder type lacing jacket tube 502 have then just been made modification in some thin portions behind the perpendicular type.Referring to Figure 33 and Figure 34, chuck 303 presents arrow shaped before the conical surface type, at its left end, three conical surfaces is arranged.From left to right, the tapering of the male cone (strobilus masculinus) of first conical surface and multistage ladder type sleeve 502 is complementary; Referring to Figure 40, second conical surface XD and multistage ladder type lacing jacket tube 502 inner conical surface XC are complementary simultaneously; Conical surface XE is complementary within third hand tap face XG and the bunching ring 12, please be simultaneously referring to Figure 35.
In Figure 35,12a is conical surface XE within the bunching ring 12, and 12b is a flange, and as seen from the figure, bunching ring 12 is made up of an annulus and a flange that contains inner conical surface.Among Figure 33,303a is the conical surface XG of chuck 303 before the conical surface type, and its tapering is less, and consistent with 12a; 303b is the square groove between each jaw, and the hook of chuck 201 passes this square groove just behind the perpendicular type; 303c is the projection that preceding chuck is not held, and is connected with firm interference fit between chuck and the pen core tube before this projection can guarantee.
The root structure of three elongated hooks of chuck 201 has been done further improvement behind the perpendicular type of Figure 36, and its hook is 90 degree with left end annulus angle, and its root size increases and is the nature transition, has improved the manufacturability and the mechanical property of panel beating moulding, simultaneously referring to Figure 37.
Now introduce the assembly method of two-beam compact form propelling pencil.Referring to Figure 38, during normality, the three-jaw of chuck 303 is open before the conical surface type.At first chuck behind the perpendicular type 201 is packed into before the conical surface type in the chuck 303, allow three elongated hooks of back chuck slide and arrive the top along three elongated chutes of preceding chuck.The jaw of chuck before pinning then, referring to Figure 39, multistage ladder type lacing jacket tube 502 is inserted in from left end, put bunching ring 12 again, this moment is chuck before lax, and after this assembling and positioning ring 13 assembles spring 4, pen core tube 6 more successively so that the back chuck is advanced to assigned address, press gland 10, a pen container 7 and a shell 8, pressure cap 11, pen hanging 9.What need supplementary notes is that above-mentioned assembly method is not only.For example, chuck 303 and back chuck 201 are putting bunching ring 12 before can assembling in advance, above-mentioned assembly is inserted in from front end tightens sleeve 502 again, and assembly method thereafter is with noted earlier consistent.
Among Figure 40, from the bottom to top, XA is the jaw inner surface of chuck 303 clamping lead for retractable pencils before the conical surface type.XB is the inner surface of chuck 303 pawl arms before the conical surface type.As seen from the figure, XB place internal diameter is less than XA place internal diameter.XC is multistage ladder type lacing jacket tube 502 inner conical surfaces.XD is second conical surface of chuck 303 before the conical surface type.XE is the conical surface within the bunching ring 12.XF is for being first inner cylinder face of multistage ladder type lacing jacket tube 502.XG is the third hand tap face of chuck 303 before the conical surface type.XH is first cascaded surface of multistage ladder type lacing jacket tube 502.XI is second inner cylinder face of multistage ladder type lacing jacket tube 502.XJ is second cascaded surface of multistage ladder type lacing jacket tube 502.XK is the 3rd inner cylinder face of multistage ladder type lacing jacket tube 502.Wherein, XC and XD tapering coupling; XE and XG tapering coupling.Bunching ring 12 slides in the axial direction along XI and XF.Chuck 201 can be in XB slides on axially behind the perpendicular type.
After pressing pressure cap 11, transmission is by passing to chuck 303 before the conical surface type by gland 10, pen core tube 6.At this moment, under the spring force effect, because locating ring 13 can slide in the axial direction along XK, locating ring 13 cooperates three elongated hooks with chuck behind the perpendicular type 201 to compress with XJ, 201 will keep motionless, and lead for retractable pencil 1 is a bit larger tham the power clamping that lead for retractable pencil is conducted oneself with dignity by one, and this power is designated as Fa.Afterwards, 303 downward feedings, the bunching ring 12 that tightly is enclosed within on 303 moves downward thereupon, this moment XA place chucking power much larger than Fa, so downward feeding of lead for retractable pencil.XC and XD broke away from cooperation and contacted this moment.When bunching ring 12 moves to the XH place, the flange 12b of the outer at 12 tops will be blocked by XH, and at this moment, 12 and 303 break away from cooperation contacts.Lead for retractable pencil also breaks away from cooperation with XA and contacts.At last, pressure cap 11 is because of being subjected to 8 resistance feed-disablings of a shell, and feeding cycle of this moment finishes.303 three jaws are in relaxed state.
When under the spring force effect, replying, be in 303 of relaxed state and move upward, and promotion bunching ring 12 moves upward.This moment, lead for retractable pencil 1 was by 201 clampings of chuck behind the perpendicular type and static.When 12 are blocked by 201 hook, XE and XG subsequently, XC and XD recover to closely cooperate gradually, and lead for retractable pencil moves up and cooperates with XA once more after a bit of distance, realizes clamping.Simultaneously, as seen from the figure, when lead for retractable pencil is clamped, with the XA place internal diameter of chuck 303 before the conical surface type that lead for retractable pencil cooperates less than XB place internal diameter; And when three jaws of current chuck were closed fully, XA place internal diameter was slightly less than lead core diameter; XB place internal diameter is greater than lead core diameter and less than two times of lead core diameters.
The utility model has adopted a large amount of map sheets to introduce single chuck formula propelling pencil, and this is because technical foundation of the present utility model is based upon on former single chuck formula propelling pencil.In the specific embodiment of the present utility model, announce three kinds of embodiments, be followed successively by propelling pencil, advanceable propelling pencil, two-beam compact form propelling pencil.It comprises common technology mutually, and innovation is also respectively arranged.Its included chuck is in no way limited in three-pawl type, and it also can be two pawl formulas, also can be multi-claw type, and it should be several chucks or clamping limb, and this is the improvement of the no essence innovation that can be directly make from the utility model of those skilled in the art.Therefore, these embodiment are only unrestricted in order to the explanation the technical solution of the utility model, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, also can make amendment or replacement on an equal basis to the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1. propelling pencil, comprise: one is positioned at front end chuck (3 before, 302,303), one is positioned at preceding chuck chuck (2 afterwards, 201), one is enclosed within the elastomer (4) on the preceding chuck, one tightens sleeve (5 after the chuck before being positioned at, 501,502), the pen core tube (6) of the end that is enclosed within preceding chuck of one constraint elastomer, one be enclosed within pen core tube end by gland (10), one with the pressure cap that cooperates by gland (11), one be enclosed within pen core tube outer and with tighten the pen container (7) that sleeve screws by screw thread, one is enclosed within the shell (8) outside the pen container, one is installed in the pen hanging (9) on the shell, one is the lead for retractable pencil (1) of preceding chuck clamping, it is characterized in that: preceding chuck comprises at least two jaws (3a), the pawl head (3f) of each jaw is positioned at outside the handwriting (111), pawl arm (3e) is positioned among the handwriting, between each jaw elongated gap is arranged, and comprise at least two square grooves (3d) between each jaw, back chuck comprises at least two hooks (2d), each respective grooves of chuck before this hook passes just, back chuck comprises at least two elasticity jaws (2a), after this among the cavity body that the pawl arm of each jaw of chuck formed before each jaw of chuck was positioned at just, each hook of back chuck is between cascaded surface of tightening sleeve and elastomer.
2. propelling pencil according to claim 1 is characterized in that: described propelling pencil also comprises a bunching ring (12), and bunching ring is positioned at preceding chuck (303) and tightens between the sleeve (502).
3. propelling pencil according to claim 1, it is characterized in that: described propelling pencil also comprises a locating ring (13), this ring is positioned at preceding chuck (303) diametrically and tightens between the sleeve (502), and this ring is presented axially between the hook of elastomer (4) and back chuck (201).
4. according to claim 1 or 2 or 3 described propelling pencils, it is characterized in that: the pawl head (3f) of chuck (3) comprises two conical surfaces before described: a conical surface (3b) outside handwriting (112), this conical surface with tighten sleeve outside the conical surface (5a) tapering consistent; Another conical surface (3c) is within handwriting, this conical surface with tighten sleeve within the conical surface (5b) match and tapering consistent, at least two square grooves (3d, 302e) are arranged on the pawl arm (3e) of preceding chuck, and each groove is about the axle center symmetry, the jaw (3a) of chuck is also about the axle center symmetry before each.
5. according to claim 1 or 2 or 3 described propelling pencils, it is characterized in that: be connected to an entity by an annulus (2c) between the elasticity jaw (2a) of described back chuck and the hook (2d), and elasticity jaw and hook have depression (2b) all about the axle center symmetry at the middle part of elasticity jaw.
6. according to claim 1 or 2 or 3 described propelling pencils, it is characterized in that: the described sleeve inner of tightening is for comprising the stepped construction of two stage steps (XH, XJ) at least, tightens sleeve inner and contains at least one conical surface (5b, 501a, 501b, 501c, XC) and cooperate with the corresponding conical surface (3c, 302a, 302b, 302c, XD) of preceding chuck.
7. according to claim 1 or 2 or 3 described propelling pencils, it is characterized in that: chuck (302) outer surface comprises a staged structure before described, the described sleeve inner of tightening comprises a corresponding stepped construction, mating surface between the two is followed successively by the conical surface (302a, 501a), the conical surface (302b, 501b), the conical surface (302c, 501c).
8. according to claim 1 or 2 or 3 described propelling pencils, it is characterized in that: described elastomer is a cylindroid helical-coil compression spring, and this spring is presented axially between the cascaded surface and pen core tube of tightening sleeve; This spring is positioned at preceding jaw arm (3e) diametrically and tightens between the sleeve.
9. according to claim 1 or 2 or 3 described propelling pencils, it is characterized in that: the end of chuck (303) contains a projection (303c) before described, chuck (303) comprises a conical surface outside handwriting before described, one with tighten the conical surface in handwriting (XD) that sleeve (502) cooperates, one conical surface in handwriting (XG) that cooperates with bunching ring (12) inner conical surface, wall place (XB) internal diameter is greater than lead core diameter and less than two times of lead core diameters within the pawl arm.
10. propelling pencil according to claim 2, it is characterized in that: described bunching ring comprises the flange (12b) at an annulus and annulus top, bunching ring is enclosed within on the preceding chuck, the corresponding conical surface (303a) of the conical surface within the bunching ring (12a) and preceding chuck is complementary, and bunching ring its flange in the axial direction is positioned between the hook of the cascaded surface (XH) of tightening sleeve and back chuck (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201189707U CN201009560Y (en) | 2007-03-16 | 2007-03-16 | Mechanical propelling pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201189707U CN201009560Y (en) | 2007-03-16 | 2007-03-16 | Mechanical propelling pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201009560Y true CN201009560Y (en) | 2008-01-23 |
Family
ID=39044495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201189707U Expired - Fee Related CN201009560Y (en) | 2007-03-16 | 2007-03-16 | Mechanical propelling pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201009560Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042863A (en) * | 2013-01-09 | 2013-04-17 | 浙江科技学院 | Pulsation type mechanical pencil |
| CN103072403A (en) * | 2013-01-06 | 2013-05-01 | 浙江科技学院 | Automatic pencil |
| CN108430793A (en) * | 2016-03-10 | 2018-08-21 | 斑马株式会社 | Propelling pencil unit and the writing appliance for having the propelling pencil unit |
-
2007
- 2007-03-16 CN CNU2007201189707U patent/CN201009560Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072403A (en) * | 2013-01-06 | 2013-05-01 | 浙江科技学院 | Automatic pencil |
| CN103042863A (en) * | 2013-01-09 | 2013-04-17 | 浙江科技学院 | Pulsation type mechanical pencil |
| CN103042863B (en) * | 2013-01-09 | 2015-01-14 | 浙江科技学院 | Pulsation type mechanical pencil |
| CN108430793A (en) * | 2016-03-10 | 2018-08-21 | 斑马株式会社 | Propelling pencil unit and the writing appliance for having the propelling pencil unit |
| US10507685B2 (en) | 2016-03-10 | 2019-12-17 | Zebra Co., Ltd. | Mechanical pencil unit and writing utensil with the mechanical pencil unit |
| CN108430793B (en) * | 2016-03-10 | 2020-05-19 | 斑马株式会社 | Mechanical pencil unit and writing implement with the same |
| TWI696557B (en) * | 2016-03-10 | 2020-06-21 | 日商斑馬股份有限公司 | Automatic pen element and writing tool with the automatic pen element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20100316 |