CN2033343U

CN2033343U - Movable pencil with cutting device

Info

Publication number: CN2033343U
Application number: CN 88217376
Authority: CN
Inventors: 徐兆荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-07-03
Filing date: 1988-07-03
Publication date: 1989-03-01

Abstract

The utility model relates to a propelling pencil, which comprises a penholder, a lead core storing tube provided with a claw-shaped clamping device at one end and a compression spring. The utility model is characterized in that the propelling pencil is provided with a cutter which comprises at least two slices of cutting blades; the start points of cutting edge lines of the cutting blades converge into one point of the axial lead of the propelling pencil and form an intersection angle which is less than 45 DEG, together with the axial lead; the utility model is also provided with a rotating body which can rotate the cutter or the lead cord storing tube and is provided with a spiral guiding groove or a figure-eight gyrating guiding groove, or isn't provided with the guiding grooves. The utility model has two types, a propelling pencil with a pen cap and a propelling pencil without a pen cap, wherein, for the propelling pencil without a pen cap, the claw-shaped clamping device and the cutter are positioned in an inner cavity of the conic end of the penholder. For the propelling pencil with a pen cap, the cutter is positioned in the closed end of the inner cavity of the pen cap.

Description

Propelling pencil with topping machanism

The utility model relates to pencil, particularly a kind of propelling pencil that has topping machanism.

Propelling pencil is made up of core storage tube and compression spring three parts that penholder, an end are provided with pawl type clamping device.When core storage tube was lifted downwards, each clamp jaw of pawl type clamping device separated with clamp ring, and clamp jaw outwards opens, and the lead for retractable pencil whereabouts ， And under the effect of own wt that is positioned at core storage tube stretches out in clamp jaw.When not lifting, clamp jaw is drawn in the clamp ring under the effect of compression spring force, and each clamp jaw inwardly draws in, and lead for retractable pencil is clamped in certain position.Projected length of lead can be by lifting number of times adjusted.Write finish after, core storage tube is pressed down, again lead for retractable pencil is pushed back in the core storage tube.This structure is very suitable to the thin propelling pencil that need not cut lead for retractable pencil.But thin lead for retractable pencil frangibility is not suitable for the pupil and uses.For this reason, released the propelling pencil of a kind of similar structures and use lead bullion core on the market again.Owing to use the lead bullion core, lead for retractable pencil must be fined away and better write.So the propelling pencil of this lead bullion core uses only about 12mm, that an end the is fined away bullet type lead for retractable pencil of length.When lead for retractable pencil is write rust, lift core storage tube, blunt lead for retractable pencil comes off from clamp jaw, and new sharp-pointed lead for retractable pencil is sent clamping.Though it has the not easily broken advantage of lead bullion core, projected length of lead can not be adjusted, and the length that each lead for retractable pencil can be write is too short, causes the significant wastage of lead for retractable pencil.Simultaneously, core storage tube finite capacity, writing time are not long just have been used up the lead for retractable pencil in the pen, causes great inconvenience to use.

The purpose of this utility model is to provide a kind of band cutting lead for retractable pencil device, and lead for retractable pencil can even be continued, and cutting is used, projected length of lead is adjustable, the propelling pencil of use lead bullion core.

The utility model is achieved in that a kind of penholder, an end of comprising is provided with the core storage tube of pawl formula clamping device and the propelling pencil of compression spring, it is characterized in that being provided with and comprise two its edge line starting points at least and come together in 1 And of propelling pencil axial line and this axial line and be less than the bite of the blade of 45 ° of angles of cut and make core storage tube or the having helical guide groove or the widely different transduction groove of 8 fonts or do not have the rotary body of above-mentioned guide groove of bite rotation.

Below in conjunction with accompanying drawing the utility model is explained in detail.

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is another kind of rotation body structure signal of the present utility model.

Fig. 3 is the another kind of structural representation of detent mechanism.

Fig. 4 is another kind of structural representation of the present utility model.

Fig. 5 is another structural representation of the present utility model.

A kind of structure of the present utility model as shown in Figure 1.Penholder 7 is the pipe of a hollow, and its end is tapered, and the tip of taper has hole 1; The other end then is provided with the end cap 15 of band centre bore.Bite comprises at least two blades 2 and a tool rest 3.The edge line starting point of blade 2 comes together in propelling pencil axial line 1 point, and And and above-mentioned axial line intersect less than 45 °.Blade 2 is the cantilever connection along the circumference uniform distribution of tool rest 3.Projection 4 on the penholder is fixed on bite the tapering point part of penholder 7 endoporus.One end of core storage tube 11 is provided with the pawl type clamping device that comprises clamp jaw 20, spring 19 and clamp ring 18.The pipe shaft of core storage tube 11 is provided with the rotary body 10 with helical guide groove 17.The appropriate section of penholder 7 inner hole walls is provided with the guide block 9 that matches with helical guide groove 17.Compression spring 8 is placed in core storage tube 11 Shang ， And and is bearing on the end end face of the spring base 6 of penholder 7 and rotary body 10.The part of penholder 7 proximal cover 15 is provided with an end equably and is connected the other end two bullet pawls 12 and two slotted hole (not shown)s to the tapered projection of penholder endoporus with the penholder shaft.Core storage tube 11 is provided with back taper depression 13 with bullet pawl 12 corresponding positions.Overlapping on the core storage tube 11 with tapering part and the release ring 14 that is positioned at the projection of above-mentioned slotted hole.Above-mentioned bullet pawl 12, back taper depression 13, release ring 14 have formed detent mechanism.The tail end ， And that button 16 is enclosed within core storage tube 11 stretches out in outside the end cap 15.During use, press button 16, core storage tube 11 is when penholder 7 tapering points are done axially-movable, is subjected to the interaction of helical guide groove 17 on the rotary body 10 and the guide block 9 on the penholder 7 and rotates.Lead for retractable pencil 21 one sides that clamped pawl 20 clamps are rotated 1 motion towards the hole.2 pairs of lead for retractable pencils 21 of blade cut.Because blade 2 is that cantilever is on tool rest 3, so when stretched out in hole 1, blade 2 was outwards opened with lead for retractable pencil 21.When playing pawl 12 with conical indentation 13 tablings, the lead for retractable pencil 21 that is sharpened stretches out on the 1 outer suitable position, hole and is positioned.When pressing release ring 14, the tapering part on the release ring 14 forces bullet pawl 12 outwards to open disengaging conical indentation 13, and core storage tube 11 is withdrawn in penholder 7 under the effect of compression spring 8.Penholder 7 is symmetrical arranged two holes 5.Perhaps setting is approximate with hole shape in hole 5, part is connected with penholder, outer surface presss from both sides (not shown) above the elasticity on penholder shaft surface.When needs are sent lead for retractable pencil 21 from core storage tube 11, directly clamp clamp ring 18 with hand by hole 5, perhaps clamp clamp ring 18 by elasticity, it can not be moved.Press control button 16 again, clamp jaw 20 is deviate from from clamp ring 18 and is outwards opened, and lead for retractable pencil 21 drops out from core storage tube 11.

Fig. 2 is the another kind of structure of rotary body 10.Rotary body is provided with the widely different transduction groove 22 of 8 fonts.Because the widely different transduction groove 22 of 8 fonts joins end to end, forms the closed circuit of a sealing.So no matter core storage tube 11 is done forward and reverse axially-movable, its direction of rotation is identical all the time.

The another kind of detent mechanism of the utility model as shown in Figure 3.It comprises the axial bond 26 that is positioned at two one end band inclined-planes of symmetric arrangement on the penholder 7 tail end inwalls, the end ratchet 25 that is placed in equally distributed four the zigzag grooves of core storage tube 11 upper edge circumference and two axial keyways and an end and stretches out in end cap 15 other ends and have along the control stick 27 of equally distributed four v-depressions of circumference and two axial keyways.One side of above-mentioned axial keyway overlaps with the straight flange of zigzag groove; The center line of axial keyway overlaps with the center of v-depression.

Another kind of structure of the present utility model as shown in Figure 4.Penholder 28 is an end opening, and the other end is provided with the hollow tube of the end cap 15 of band centre bore.One end of core storage tube 11 is provided with the pawl type clamping device that comprises clamp jaw 20, spring 19 and clamp ring 18.Clamp ring 18 comprises targeting part 27.Pawl type clamping device stretches out in outside the openend of penholder 28, slides in penholder 28 with targeting part 27.Band helical guide groove 17 or the widely different transduction groove of 8 fonts 22(Fig. 2) rotary body 10 be arranged on the core storage tube 11.The guide block 8 that is arranged on penholder 28 inwalls is meshed with the helical guide groove 17 or the widely different transduction groove 22 of 8 fonts of rotary body 10.Compression spring 8 is bearing on the spring base 29 of the spring base 6 of penholder 28 and core storage tube 11.One end of button 16 is positioned at penholder 28.The other end stretches out in outside the end cap 15.The openend of penholder 28 is provided with the pen cap 26 that can pull up.The blind end of the pen cap 26 inner chambers is fixing to be comprised two its edge line starting points at least and compiles 1 And of propelling pencil axial line and this axial line and be bite less than the blade 2 of 45 ° of angles of cut.

Another structure of the present utility model is not provided with on core storage tube the rotary body of band helical guide groove 17 or the widely different transduction groove 22 of 8 fonts, and all the other are all with shown in Fig. 4 structure.At this moment, the pen cap 26 is exactly the rotary body with helical guide groove 17 or the widely different transduction groove 22 of 8 fonts.As long as rotate the pen cap 26 with hand, the bite that is fixed in the pen cap 26 just can be fined away lead for retractable pencil 21.

Another pattern of the present utility model as shown in Figure 5.Penholder 34 is that an end is the hollow tube of bellmouth 37 other end perforates.One end of core storage tube 11 is provided with clamp jaw 36.Clamp jaw 36 stretches out in outside the bellmouth 37 of penholder 34.Compression spring 8 is bearing on the spring base 29 of the spring base 6 of penholder 34 and core storage tube 11.The other end of core storage tube 11 stretches out in outside the penholder 34.Button 35 is enclosed within penholder 34 perforate Duan ， And and contacts with core storage tube 11.One end of penholder 34 bellmouths 37 is provided with the pen cap 31 that can pull up.The blind end of the pen cap 31 inner chambers is fixing to be comprised two its edge line starting points at least and comes together in 1 And of propelling pencil axial line and this axial line and be bite less than the blade 32 of 45 ° of angles of cut.Rotary body 33 with helical guide groove or the widely different transduction groove of 8 fonts is arranged in the pen cap 31.Guide block engagement on widely different transduction groove of helical guide groove or 8 fonts and the pen cap 31 inwalls.Rotary body 33 is that an end has the hollow tube that the circular hole other end has bellmouth.The clamp jaw 36 of the bellmouth of rotary body 33 and core storage tube 11 is provided with projection and the depression that cooperatively interacts.The pen cap 31 blind end outer setting have support pads 30.Spring 32 is enclosed within the bite periphery, and its two ends are bearing in respectively on the pen cap 31 and the rotary body 33.Press support pads 30, the pen cap 31 drives bite rotary cutting lead for retractable pencil 21.

The utility model has following advantages: 1. the slightly pointed lead for retractable pencil of tool, handwriting is clear. 2. lead for retractable pencil is economized, and writing time is long.

Claims

1, a kind of penholder, an end of comprising is provided with the core storage tube of pawl formula clamping device and the propelling pencil of compression spring, it is characterized in that being provided with comprise at least two its edge line starting points come together in 1 And of propelling pencil axial line and this axial line be less than the bite of the blade of 45 ° of angles of cut and make core storage tube or the bite rotation have rotary body helical guide groove or the widely different transduction groove of 8 fonts or that do not have above-mentioned guide groove.

2, propelling pencil according to claim 1, it is characterized in that described bite comprises the tool rest of annular, blade is cantilever-shaped along the tool rest circumference uniform distribution, and bite is fixed in the endoporus of penholder taper one end, and the rotary body with helical guide groove or the widely different transduction groove of 8 fonts is arranged on the core storage tube.

3, propelling pencil according to claim 1 and 2, it is characterized in that being provided with comprising and be arranged on penholder afterbody, an end are connected the inside tapered projection of the other end with penholder bullet pawl symmetrically, back taper on core storage tube depression and be placed in the detent mechanism of the releasing sleeve that has taper seat on the core storage tube.

4, propelling pencil according to claim 1 and 2, it is characterized in that being provided with and comprise the axial bond that is positioned at two one end band inclined-planes of symmetric arrangement on the penholder tail end inwall, be placed in the end ratchet of equally distributed four the saw connected in stars of core storage tube upper edge circumference and two axial keyways and an end and stretch out in the end cap other end and have along the detent mechanism of the control stick of equally distributed four v-depressions of circumference and two axial keyways, a side of above-mentioned axial keyway overlaps with the straight flange of zigzag groove; The center line of axial keyway and the central lines of v-depression.

5, propelling pencil according to claim 1 and 2 is characterized in that nearly penholder tapering point is provided with two holes of symmetric arrangement, or setting is approximate with hole shape in above-mentioned hole, part is connected with penholder, outer surface presss from both sides above the elasticity on penholder shaft surface.

6, propelling pencil according to claim 3 is characterized in that nearly penholder tapering point is provided with two holes of symmetric arrangement, or setting is approximate with hole shape in above-mentioned hole, part is connected with penholder, outer surface presss from both sides above the elasticity on penholder shaft surface.

7, propelling pencil according to claim 4 is characterized in that nearly penholder tapering point is provided with two holes of symmetric arrangement, or setting is approximate with hole shape in above-mentioned hole, part is connected with penholder, outer surface presss from both sides above the elasticity on penholder shaft surface.

8, propelling pencil according to claim 1 is characterized in that being provided with the pen cap, and described bite is fixed on the blind end of pen cap inner chamber.

9, according to claim 1 or 8 described propelling pencils, it is characterized in that the rotary body with helical guide groove or the widely different transduction groove of 8 fonts is arranged in the pen cap, the bellmouth of rotary body and the clamp jaw of core storage tube are provided with projection and the depression that cooperatively interacts, and are provided with the spring that is enclosed within the bite periphery between pen cap inner chamber blind end and the rotary body.