CN201240158Y - Refill block type rear rotating telescoping propelling pencil - Google Patents

Abstract

The utility model discloses a lead-jamming type rear spinning-expansion propelling pencil, which consists of a shell (1), a pencil point (2), a pencil cap (3), a pencil cover (4), a pencil rear spinning expansion device (5) and a pencil lead (6), and is characterized in that the jamming-type pencil rear spinning expansion device (5) is arranged at the rear end of the shell (1); the upper end of the jamming-type pencil lead (6) is locked by the inner ring of the device (5); and the pencil cap (3) is internally lined with a magnetic pad. The utility model provides the improvements that the jamming-type rear spinning expansion device and the jamming-type pencil lead are substituted for the original device and pencil lead, and the magnetic pad is internally arranged in the original pencil cap on the basis of consolidating the achievement of the original potent by the patentee of the rear spinning-expansion propelling pencil (200620010350.7), thereby replenishing the pencil lead more rapidly, prolonging the service life of the pencil cap (3), preventing the pencil shaft from being influenced by the torsional force when the pencil lead is sharpened, and ensuring that the pencil lead can not be twisted off even if the pencil lead is thin, the manufacture of the shell is finer and the overall design is simpler, more intensive and more environment-friendly.

Description

Rotary extension propelling pencil behind the pen core blocked

Technical field

The utility model relates to a kind of improvement of pencil, rotary extension propelling pencil behind specifically a kind of pen core blocked.

Background technology

Pencil is one of indispensable stationery of student, also is one of stationery of using always of engineers and technicians, and according to incompletely statistics, national annual consumption is about 5,000,000,000, and consumption is very big.And its shell of pencil that uses at present mostly is six stupefied wooden shells greatly, so expend a large amount of timber every year, is the use amount of minimizing timber, and what have begins to develop paper shell pencil.The paper shell pencil of being produced at present can be saved timber, and its housing is circular.Present employed propelling pencil has multiple, mostly by a shell, nib, pen core, refill expansion mechanism constitutes, on nib, be provided with clamp port, what have in the inboard of nib has established clamping pearl and spring, there is driving in its refill expansion mechanism, also has screw typely, and it is rotary to be to adopt screw rod, the front end of screw rod pushes pen core, pen core is stretched out, and the retraction of pen core depends on spring reset to realize, therefore the clamping device of pen core also will be arranged, make the complex structure of handwriting, in addition, its pen core part of present employed propelling pencil is a pen core entirely, no involucrum, because pen core is thinner, longer, so be easy to fracture, because the paper bag shell is not used in the pen core outside, so be unfavorable for the popularization of paper shell pencil, the problem of solution timber waste that therefore, also just can not be a large amount of.

Summary of the invention

The purpose of this utility model be to provide a kind of flexible by rear end rotation, pencil-lead from front end, can be beneficial to that paper shell pencil is promoted, save timber, pen core not frangibility, twist off, the pen core cutting is convenient, the cap for brush get close light, change rotary extension propelling pencil behind the pen core blocked that pen core is light and handy, overall structure is intensive.

For reaching above purpose, especially reach that pen core is difficult for twisting off, the cap for brush get close light, change the purpose that pen core is light and handy, overall structure is intensive, the technical scheme that the utility model adopted is: rotary extension propelling pencil behind this pen core blocked is made of rotary extension device, blocked pen core behind housing, a shell head, a shell cap, a cap, the blocked pencil; Shell head is a taper, and the center of a shell head is that pencil stretches out the hole; Cap is fixed on the rear port of housing; It is characterized in that establishing blocked pencil rear end rotary extension device in the rear end of housing, the upper end of the interior cover jam pencil-lead outer envelope of pencil rear end rotary extension device, by Propelling pencil with sharpener in cap rear end rotary extension device, promote or spur the upper end of pencil, pencil stub is stretched out or indentation.The utility model is also implemented by following measure: described blocked pencil rear end rotary extension device is made of from movable snail sleeve, guide cylinder screw shell, dicyclo; Guide cylinder is four intimate 1/4 cylindrical walls that are equal to, and is gapped between four cylindrical walls, forms two different paths of width, and the lower end is fixedly connected on the inner face of shell head; The screw shell of between guide cylinder and housing, packing into, the length of screw shell is consistent with the length of housing inner chamber, dicyclo inserts path one from movable snail sleeve from guide cylinder top, dicyclo is stuck in from the fixed connecting plate between the inside and outside cover of movable snail sleeve among the path one of guide cylinder, the outer shroud screw thread of dicyclo from the movable snail sleeve and the internal thread engagement of screw shell; Cap is pushed down screw shell and dicyclo from the overcoat of movable snail sleeve, prevents that the reaction force of screw shell when rotation promotes pencil from stretch out screw shell; Dicyclo is made of two parts up and down from the interior cover of movable snail sleeve, interior cover bottom is divided into fixture, fixedlyed connected by fixed connecting plate with overcoat, interior cover top is movable part, and the projection head of movable part lower end inwall is rabbeted with two sections quarter turn lateral clearance grooves of fixture upper end; Movable part can rotate in 0～90 ° of angular region; Two axially symmetrical vertical projection length and width height each 1mm, 1mm, 2mm on the inwall of movable part lower end, on the outer wall of movable part lower end with the inwall projection back to the vertical projection length and width of two symmetries high each 2mm, 1mm, 5mm, on the fixture epimere inwall, be in the vertical projection length and width of two symmetries high each 1mm, 1mm, the 5mm of same longitudinal section with fixed connecting plate; When initial state, movable part lower end inwall axially two vertical projections of symmetry docks the being aligned section with two vertical projections of fixture upper end inwall symmetry, and be on the same axial cross section with two symmetrical projections on the shell head inwall, be pressed into towards the correct direction of docking with nib end inwall projection with the guiding pen core; Cover in insert the pencil lower end, two symmetrical grooves of pencil outer wall and dicyclo two vertical projections of symmetry of cover inwall in the movable snail sleeve dock, press downward to, symmetrical grooves is passed two symmetrical projections of a shell head inwall, when the symmetrical projection of movable part inwall touches the parallel groove of pencil upper end, pencil is depressed and is prevented from, and the pen core of packing into is finished; The movable part on cover top in the up time direction is rotated, rotate 90 ° from initial state, two vertical projections of movable part lower end inwall symmetry embed the groove arc bottom of pen core upper end, thoroughly pen core is blocked, at this moment, two vertical projections of movable part lower end outer wall symmetry dock with the port of guide cylinder upper path two; The upper end of housing is that the 10-15mm place is provided with and refers to revolve window far from the end, the sliding line of on the outer wall of the screw shell that refers to revolve the window place, setting up defences, the anti-skidding line of up time direction rubbing, it is descending from movable snail sleeve that sleeve drives dicyclo, pen core is descending simultaneously, in two vertical symmetrical projection access paths two on the movable part outer wall of interior cover top, firmly interior ring movable part state is fixed; The anti-skidding opinion of inverse time direction rubbing, dicyclo is up from movable snail sleeve, and to the top, 90 ° of the movable parts on the interior cover of inverse time direction rotation top return back to initial state, and pencil-lead can be extracted out; When sharpening a pencil, the pencil-lead that will stretch out nib inserts and has in the cap for brush of sharpener, sharpener is 75 ° with the angle of a shell cap bottom surface, up time direction roll-shell, can begin to cut the outsourcing thing of pencil lead, smear metal is shaken from cap for brush smear metal window, because two projections of written end inwall and pen core engagement, so can not produce torsion during cutting, avoid twisting off to reservoir shaft; Because two vertical projections of interior ring movable part inwall have embedded in the recessed horizontal arc of pen core upper end, so when writing, pen core can not produce a bit collecting together up and down.

The beneficial effects of the utility model are, on the basis of consolidating 200620010350.7 back rotary and telescopic propelling pencil achievements, further given prominence to following effect: 1, pencil-lead by original cylindrical pen core upper end adhere to the polymer cover, left-handedly be screwed into, dextrorotation back-outs, be improved to the blocked pen core, once depress and pack into, promote out on once, it is more convenient that pen core is changed; 2, the structure uniqueness of pencil-lead, manufacturing tends to simple, intensive, environmental protection more; 3, the projection of written end inwall and the engagement of pen core longitudinal fluting, the torsion that when having eliminated the cutting pen core cartridge body has been produced, pen core no longer includes the possibility that is twisted off, and can make the manufacturing trend of pen core, a housing tiny thus, economizes on resources more; 4, cushioning magnetic material annulus under the cap for brush sharpener, a cap, nib are inhaled even by the magnetic force and the cap for brush, are rich in hommization, use more convenient.

Description of drawings

Fig. 1 cuts open schematic diagram for the utility model structure master office of looking.

Fig. 2 is the axis cross-sectional schematic of the utility model along housing.

Fig. 3 analyses and observe enlarged diagram for the utility model along Figure 1A-A.

Fig. 4 analyses and observe enlarged diagram for the utility model along Fig. 2 B-B.

Fig. 5 overlooks enlarged diagram for the utility model cap.

Fig. 6 overlooks enlarged diagram for the utility model cap for brush magnetic pad.

Fig. 7 overlooks enlarged diagram for the utility model dicyclo from the movable snail sleeve lower fixture.

Fig. 8 analyses and observe enlarged diagram for the utility model dicyclo from movable snail sleeve top movable part and lower fixture connected mode axis.

Fig. 9 is the utility model blocked pen core handwriting moulding side-looking enlarged diagram.

Figure 10 is the utility model blocked pen core jam concave arc position cross section enlarged diagram.

Figure 11 is the utility model pen core cross section enlarged diagram.

The specific embodiment

Make the utility model with reference to accompanying drawing 1,2,3,4,5,6,7,8,9,10,11.Rotary extension propelling pencil behind this pen core blocked is made of rotary extension device 5, blocked pen core 6 behind housing 1, a shell head 2, a shell cap 3, a cap 4, the blocked pencil; Blocked pencil rear end rotary extension device 5 is established in the rear end of housing 1, the upper end that the interior ring of pencil rear end rotary extension device 5 blocks pencil-lead outer envelope 6, and a shell cap 3 built-in magnetic gasket are adsorbed by magnetic force with a shell head 2, a cap 4.Described blocked pencil rear end rotary extension device 5 is made of from movable snail sleeve 52, guide cylinder 53 screw shell 51, dicyclo; Dicyclo is made of two parts up and down from the interior cover of movable snail sleeve 52, and interior cover bottom is divided into fixture, is fixedlyed connected by fixed connecting plate with overcoat; Interior cover top is movable part, and the projection head of inboard, movable part lower end is rabbeted with two sections quarter turn lateral clearance grooves of fixture upper end; Movable part can rotate in 0～90 ° of angular region; Movable part lower end inwall is two vertical projection length and width high each 1mm, 1mm, the 2mm of symmetry axially; With two vertical projection length and width high each 2mm, 1mms, the 5mm of inwall projection back to, movable part lower end outer wall symmetry; Fixture epimere inwall, be in the vertical projection length and width of two symmetries of same axial cross section high each 1mm, 1,5mm with fixed connecting plate; When initial state, movable part lower end inwall axially two vertical projections of symmetry docks the being aligned section with two vertical projections of the axial symmetry of fixture epimere inwall; Guide cylinder is close to 1/4 impartial cylindrical wall by 4 and constitutes, and the lower end is fixedly connected on the inner face of shell head, and 4 vertical cylinder gaps form the two-way guide path, and two interspaces of wide 1mm form path one, and two interspaces of wide 2mm form path two; The screw shell 51 of between guide cylinder 53 and housing 1, packing into, the length of screw shell 51 is consistent with the length of housing 1 inner chamber, is that the 10-15mm place establishes and refers to revolve window 7 far from the end in the upper end of housing 1, the sliding line of setting up defences on the outer wall of the screw shell 51 that refers to revolve window 7 places; Dicyclo inserts in the path one on 53 tops from movable snail sleeve 52 from guide cylinder, and dicyclo is stuck between guide 53 gaps from the fixed connecting plate 54 between the movable snail sleeve 52 inside and outside covers; The outer shroud screw thread of dicyclo from the movable snail sleeve 52 and the internal thread engagement of screw shell 51; The movable part on dicyclo cover tops in the movable snail sleeve 52 is when initial state, cover in insert the pencil lower end, two symmetrical grooves of pencil outer wall are docked with two vertical projections of symmetry of dicyclo from movable snail sleeve 52 interior cover inwalls, press downward to, symmetrical grooves enters two axial symmetrical projections of a shell head inwall, when the symmetrical projection of interior cover top movable part touched the parallel groove of pen core upper end, pen core was depressed and is prevented from, and pencil is depressed the pen core of packing into and finished; The movable parts that the up time direction is rotated dicyclo cover tops in the movable snail sleeve 52 rotate 90 ° from initial state, and two vertical projections of movable part lower end inwall symmetry embed the groove arc bottom of pen cores upper end; At this moment, two vertical projections of movable part lower end outer wall symmetry dock with two ports of guide cylinder 53 upper path two; Referring to revolve window 7 places, up time direction rubbing sleeve, it is descending that dicyclo drives pen core from movable snail sleeve 52, and in two vertical projection access paths two of movable part lower end, interior cover top outer wall symmetry, the movable part jam that the pen core upper end is overlapped in movable snail sleeve is fully lived.Shell head 2 adopts the irony foundry goods, and interior external threading is tightened on the front port that is fixed in housing 1; The inwall of housing 1 front port is cast with two vertical projections of axial symmetry, length and width high each 1mm, 1mm, 5mm; Cap 4 adopts the irony foundry goods, and interior external threading is tightened on the rear port that is fixed in housing 1; Be provided with sharpener 8 in the shell cap 3, sharpener 8 is 75 ° with the angle of shell cap 3 bottom surface, and the sharpener bottom is paid for magnetic material part 9 first, and by magneticaction, a shell cap can be respectively and the front and back ends absorption of housing 1; Shell wall one side relative with the sharpener cutting edge of a knife or a sword has vertical rectangular window 10, and the chip that cutting pen core outer envelope is produced knocks out from here.Paper shell pencil-lead upper end 5mm is with the lower part, and axially symmetrical both sides are carved with width, the degree of depth and respectively are the parallel groove of 1mm, and parallel groove is until the lower end of pencil-lead; Starting point place at two grooves in pen core upper end is parallel to the pen core cross section, is carved with the 1/4 groove arc of degree of depth 1mm, height 2mm in the direction of the clock, has formed the blocked pen core that is exclusively used in the utility model product.

Claims (4)

1, the utility model discloses rotary extension propelling pencil behind a kind of pen core blocked, constitute by rotary extension device (5), pen core (6) behind housing (1), a shell head (2), a shell cap (3), a cap (4), the pencil, blocked pencil rear end rotary extension device (5) is established in the rear end that it is characterized in that housing (1), the interior ring of pencil rear end rotary extension device (5) blocks the upper end of special-purpose blocked pen core (6), shell cap (a 3) liner magnetic pad.

2, rotary extension propelling pencil behind the pen core blocked according to claim 1 is characterized in that described blocked pencil rear end rotary extension device (5), is made of from movable snail sleeve (52), guide cylinder (53) screw shell (51), dicyclo; Dicyclo is made of two parts up and down from the interior cover of movable snail sleeve (52), and interior cover bottom is divided into fixture, is fixedlyed connected by fixed connecting plate with overcoat; Interior cover top is movable part, and the projection head of inboard, movable part lower end is rabbeted with two sections quarter turn lateral clearance grooves of fixture upper end; Movable part can rotate in 0～90 ° of angular region; Movable part lower end inwall is two vertical projection length and width high each 1mm, 1mm, the 2mm of symmetry axially; Movable part lower end outer wall and inwall projection back to the vertical projection length and width of two symmetries high each 2mm, 1mm, 5mm; Fixture epimere inwall, be in the vertical projection length and width of two symmetries of same axial cross section high each 1mm, 1mm, 5mm with fixed connecting plate; When initial state, movable part lower end inwall axially two vertical projections of symmetry docks the being aligned section with two vertical projections of the inboard symmetry of fixture epimere; Guide cylinder is close to 1/4 impartial cylindrical wall by 4 and constitutes, and the lower end is fixedly connected on the inner face of shell head, and 4 vertical cylinder gaps form the two-way guide path, and two interspaces of wide 1mm form path one, and two interspaces of wide 2mm form path two; The screw shell (51) of between guide cylinder (53) and housing (1), packing into, the length of screw shell (51) is consistent with the length of housing (1) inner chamber, be that the 10-15mm place establishes and refers to revolve window (7) in the upper end of housing (1) far from the end, the sliding line of on the outer wall that refers to revolve the screw shell (51) that window (7) locates, setting up defences; Dicyclo inserts in the path one from movable snail sleeve (52) from guide cylinder (53) top, and dicyclo is stuck between the gap in path two from the fixed connecting plate (54) between the inside and outside cover of movable snail sleeve (52); The outer shroud screw thread of dicyclo from the movable snail sleeve (52) and the internal thread engagement of screw shell (51); The movable part on dicyclo cover top in the movable snail sleeve (52) is when initial state, cover in insert the pencil lower end, two symmetrical grooves of pencil outer wall are docked with two vertical projections of symmetry of dicyclo from the interior cover of movable snail sleeve (52) inwall, press downward to, symmetrical grooves enters two axial symmetrical projections of a shell head inwall, when the symmetrical projection of interior cover top movable part touched the parallel groove of pen core upper end, pen core was depressed and is prevented from, and pencil is depressed the pen core of packing into and finished; The up time direction is rotated the movable part of dicyclo from the interior cover of movable snail sleeve (52) top, rotates 90 ° from initial state, and two vertical projections of movable part lower end inwall symmetry embed the bottom of pen core upper end groove arcs; At this moment, two vertical projections of movable part lower end outer wall symmetry dock with two ports of guide cylinder (53) upper path two; Referring to that revolving window (7) locates, up time direction rubbing sleeve, it is descending that dicyclo drives pen core from movable snail sleeve (52), two vertical projection access paths two of the movable part end outside symmetry on the interior down cover of interior cover top movable part top, and the pen core upper end is overlapped the movable part jam on top fully and is lived in movable snail sleeve.

3, rotary extension propelling pencil behind the pen core blocked according to claim 1, its feature is adopting the irony foundry goods with a shell head (2), and interior external threading is tightened on the front port that is fixed in housing (1); The inwall of housing (1) front port is cast with two vertical projections of axial symmetry, each length * wide * height=1 * 1 * 5 (mm); Cap (4) adopts the irony foundry goods, and interior external threading is tightened on the rear port that is fixed in housing (1); Sharpener (8) bottom of shell cap is paid for magnetic material part (9) first, and by magneticaction, a shell cap can be respectively and the front and back ends absorption of housing (1); Have vertical rectangular window (10) on a shell wall relative with the sharpener cutting edge of a knife or a sword, the chip that cutting pen core outer envelope is produced knocks out from here.

4, rotary extension propelling pencil behind the pen core blocked according to claim 1 and 2, it is characterized in that at paper shell pencil-lead upper end 5mm with the lower part, axially symmetrical both sides are carved with width, the degree of depth and respectively are the parallel groove of 1mm, and parallel groove is until the lower end of pencil-lead; Starting point place at two grooves in pen core upper end is parallel to the pen core cross section, is carved with the 1/4 groove arc of degree of depth 1mm, height 2mm in the direction of the clock, has formed blocked pen core of the present utility model.

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