CN103101374A

CN103101374A - Single-hole double-cutting-edge skew-symmetric pencil-lead-unbroken pencil sharpener

Info

Publication number: CN103101374A
Application number: CN2012105976459A
Authority: CN
Inventors: 王正铉
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-21
Filing date: 2012-12-21
Publication date: 2013-05-15

Abstract

Provide is a single-hole double-cutting-edge skew-symmetric pencil-lead-unbroken pencil sharpener. Two blades which are symmetrically installed on the same knife rest are utilized to cut the same pencil with equal force simultaneously and synchronously. The principle is that lever prying force of a single-edge pencil sharpener is changed to be cutting force dipole moment, wherein double sides of the cutting force dipole moment are reversed and are of the same size, and thereby a pencil core is enabled to keep unbroken in the process of cutting. The single-hole double-cutting-edge skew-symmetric pencil-lead-unbroken pencil sharpener comprises the knife rest and the blades. A coarse straight circular pipe section, a conical cavity body cutting groove and a circular fine through hole are communicated in a coaxial-core mode. Grooves, screw spikes, a knife rest base seat and circular cylinder protrusions are arranged on two inclined planes outside the knife rest. The single-hole double-cutting-edge skew-symmetric pencil-lead-unbroken pencil sharpener has the advantages of being small, exquisite and portable like the single-edge pencil sharpener, unbroken in pencil core like a hand-operated pencil sharpener and capable of being installed inside an outer shell of the single-edge pencil sharpener and being beautified by the outer shell. The cutting speed, the efficiency and the service life of the single-hole double-cutting-edge skew-symmetric pencil-lead-unbroken pencil sharpener are all improved by many times. The single-hole double-cutting-edge skew-symmetric pencil-lead-unbroken pencil sharpener only has one more blade than the single-edge pencil sharpener and is simple in structure, easy to manufacture, low in cost and particularly suitable for cutting soft colorful pencil cores, eyebrow pencils used by ladies and the like.

Description

The two continuous pencil sharpeners of cutting edge skew symmetry formula pen core of single hole

Technical field: the present invention relates to a kind of " the two continuous pencil sharpeners of cutting edge skew symmetry formula pen core of single hole ".

Background technology: selling the pencil sharpener that uses on Vehicles Collected from Market has two kinds: a kind of is common single-blade cutting pencil sharpener.This type pencil sharpener is small and exquisite portable, low price, but pen core very easily fractures in working angles.Another kind is hand-operated pencil sharpener.This pencil sharpener no doubt can make the pen core of pencil keep in cutting constantly, but that its deficiency is volume is large, portably uses inconvenience, and expensive.

Summary of the invention: purpose of the present invention just is to provide a kind of " the two continuous pencil sharpeners of cutting edge skew symmetry formula pen core of single hole ".It is that a kind of utilization is designed with, and two identical blades that symmetry is arranged on same knife rest carry out the while to same pencil, synchronously cutting.Its principle is the lever prying force formula cutting force with the hilted broadsword pencil sharpener, changes and becomes two-sided reverse and equal-sized cutting couple moment, and this two cutting force is cancelled out each other, thereby makes pen core keep continuous in working angles.

" the two continuous pencil sharpeners of cutting edge skew symmetry formula pen core of single hole " mainly include, a two sides can be installed the taper cuboid knife rest of blade simultaneously, the one thick straight pipe section that can make the pencil orientation is arranged in position, the downside of the relatively roomy end of knife rest center, toward knife rest the inside be again one with should be slightly the conical cavity cutting slot that is communicated with of pipe section concentric directly, the other end that knife rest is relatively narrow has a tiny manhole that is communicated with conical cavity cutting slot taper end concentric in positive middle part, two blades, knife rest outside is designed with the groove of laying two blades on symmetrical two inclined-planes, two screws of fixed blade, the protrusion tool rest bracket at the positive middle part of the relatively roomy end of knife rest, with two column type raised body of knife rest one etc.

Advantage of the present invention is:

The small and exquisite portable advantage of single-blade pencil sharpener and the Novel pencil sharpener that hand-operated pencil sharpener makes the continuous advantage of pen core have been concentrated.In addition, this knife rest is only little greater than selling now the knife rest of the various single-blade pencil sharpeners that use.Therefore, this knife rest that two blades are installed can be arranged in the shell of various single-blade pencil sharpeners easily, namely can beautify with the shell of the various single-blade pencil sharpeners of existing sale use.Cutting speed has improved than the single-blade pencil sharpener in efficient and service life and has manyed times.This movement only Duo a blade than common single-blade pencil sharpener, and cost almost equals together the movement of single-blade pencil sharpener.

Simple in structure, be easy to make, cost is low, is particularly suitable for cutting various softer colored pen cores and the eyebrow pencil of ladies' use etc.

Description of drawings: accompanying drawing 1 is general illustration of the present invention.

Accompanying drawing 2 is the left view of general illustration of the present invention.

Accompanying drawing 3 is the cutaway view of general illustration of the present invention.

the specific embodiment: the present invention mainly includes: a two sides can be installed the taper cuboid knife rest 1 of blade simultaneously, the one thick straight pipe section 2 that can make the pencil orientation is arranged in a relatively roomy position, end inner underside center of knife rest 1, past knife rest 1 the inside is a conical cavity cutting slot 3 that is communicated with these thick straight pipe section 2 concentrics again, the other end that knife rest 1 is relatively narrow has a tiny manhole 4 that is communicated with conical cavity cutting slot 3 taper end concentrics in positive middle part, blade 5 and blade 6, be designed with the groove 7 and groove 8 of laying blade 5 and blade 6 on symmetrical two inclined-planes, knife rest 1 outside, be used for blade 5 and blade 6 are fixed on screw 9 and screw 10 on knife rest 1, the downside of the relatively roomy end of knife rest 1 have one with the protrusion tool rest bracket 11 of knife rest 1 consubstantiality, with the symmetrical and size of knife rest 1 consubstantiality and the column type raised body 12 and column type raised body 13 that equates.

Before the present invention uses, first use screw 9 with in blade 5 fixed grooves 7, with screw 10 with in blade 6 fixed grooves 8 and this two cutting edge is symmetrically located on the both sides of the conical surface of conical cavity cutting slot 3, and the solid that the keeps two blades mutual keeping parallelism of vertical plane altogether.Column type raised body 12 symmetrical and big or small with knife rest 1 consubstantiality and that equate is used for installing setscrew 9 and screw 10 with column type raised body 13.Tool rest bracket 11 is used for guaranteeing knife rest 1 accurately and the pencil sharpener shell is stained with fixed bit.In order to prevent that knife rest 1 body from moulding cooling after-contraction modification impact cutting school fruit poly-, that the thickness of knife rest 1 body each several part design is basic identical.

Use when of the present invention, the pencil of cutting to be repaired is inserted in the thick straight pipe 2 of knife rest 1 inner underside.Due to the mandatory orientation of these thick straight 2 pairs of these pencils to be repaired of pipe section, make this axle center of repairing the pencil of cutting all can keep concentric with thick straight pipe section 2, conical cavity cutting slot 3, tiny manhole 4 all the time what cut, continuous in order to pen core.When the precession to the right of this pencil entered conical cavity cutting slot 3, its wooden part by blade 5 and blade 6 simultaneously, and was synchronous and wait cutting force ground to cut to strip down.Along with the continuation propelling of this pencil, attenuating that its pen core part is cut equally comes to a point.Along with the continuation of this pen core advances, the pen core that has been sharpened stretching into or the tiny circular apertures 4 by being communicated with the taper end concentric of conical cavity cutting slot 3 slowly, thus prevented that this writing core nib that has been sharpened from not blocked by the limit wall of knife rest 1.Due to, two identical blades that symmetry is arranged on same knife rest carry out the while to same pencil, synchronously cutting and its principle are the lever prying force of hilted broadsword pencil sharpener to be changed become two-sided reverse and equal-sized cutting couple moment, thereby make pen core keep continuous in working angles.

Claims

1. two continuous pencil sharpeners of cutting edge skew symmetry formula pen core of single hole, its feature includes: a two sides can be installed the taper cuboid knife rest (1) of blade simultaneously, in a relatively roomy position, end inner underside center of knife rest (1), a thick straight pipe section (2) is arranged, toward knife rest (1) the inside be again one with should be slightly the conical cavity cutting slot (3) that is communicated with of pipe section (2) concentric directly, the other end that knife rest (1) is relatively narrow has a tiny manhole (4) that is communicated with conical cavity cutting slot (3) taper end concentric in positive middle part, blade (5) and blade (6), be designed with the groove (7) and groove (8) of laying blade (5) and blade (6) on symmetrical two inclined-planes, knife rest (1) outside, be used for blade (5) and blade (6) are fixed on screw (9) and screw (10) on knife rest (1), the downside of the relatively roomy end of knife rest (1) have one with the protrusion tool rest bracket (11) of knife rest (1) consubstantiality, symmetrical with knife rest (1) consubstantiality and big or small and equate column type raised body (12) and column type raised body (13), the effect of thick straight pipe (2) is that pencil to be repaired is carried out mandatory orientation, and then make this axle center of repairing the pencil of cutting all can keep concentric with thick straight pipe section (2), conical cavity cutting slot (3), tiny manhole (4) all the time what cut, continuous in order to pen core, the function of tiny circular apertures (4) is to prevent that this writing core nib that has been sharpened from not blocked by the limit wall of knife rest (1), tool rest bracket (11) is used for guaranteeing knife rest (1) accurately and the pencil sharpener shell is stained with fixed bit, column type raised body (12) is used for installing setscrew (9) and screw (10) with column type raised body (13).