CN2382575Y

CN2382575Y - Pencil sharpener

Info

Publication number: CN2382575Y
Application number: CN 99237665
Authority: CN
Inventors: 乐颖
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-12
Filing date: 1999-05-12
Publication date: 2000-06-14
Anticipated expiration: 2009-05-12

Abstract

The utility model relates to a novel pencil sharpener, which is composed of a blade (5), a blade head (7), a slide rail (4), a casing (6), and a pencil sharpener (2) which is arranged on a bottom board. The utility model is characterized in that when processed through the pencil sharpener (2) in a rough way, a pencil is put in a pencil stub shaping jig (3) which is formed into a definite included angle with the slide rail (4), and after locked by a three-jaw one-spring clip (11) in an axial way, the pencil is pushed into the blade head (7) to be sharpened. When the blade head (7) is returned, because a shifting rod (20) which is fixed at the bottom part of the blade head and a relay shifting spring spindle (21) which is fixedly connected with a wallboard which is arranged at the tail part of the casing (6) act on a force transmission gear (17) in common, the pencil can be rotated automatically according to the set angle. The operations are repeated continuously, the pencil is rotated at one circle, and the success of pencil sharpening once is achieved. The utility model has the advantages of zero broken rate for a pencil lead, and high semiautomatic degree. Besides, the machining quality of the utility model is incomparable by the prior art including an inward hand-operated pencil sharpener.

Description

The NEW Pb graver

The utility model relates to stationery, specifically is a kind of NEW Pb graver.

At present, known pencil-knife promptly is a pencil sharpener, though this cutter has advantage of simple structure, but fracture lead for retractable pencil easily, the pencil effective rate of utilization is greatly reduced, also have, its work quality is very poor, that makes is written coarse, especially can not be satisfied with to the higher drawing worker of written quality requirement, up-to-date hand-rail type hinge graver, though improvement is arranged aspect the pencil sharpener shortcoming overcoming, but price is higher, not fairing of written tapering, attractive in appearance, and written tapering is for selecting.

The purpose of this utility model provides a kind of lead for retractable pencil of both can having avoided and fractures, and nib is made realize not only point but also light, thus the NEW Pb graver that the work quality of pencil-knife is improved greatly.And the tapering of nib also can freely be selected by the user, its simple structure, and volume is less, is easy to carry.

The purpose of this utility model is to realize like this, base plate at the pencil-knife housing carries pencil sharpener for one jiao, the penknife cutter is provided with written moulding moulding bed, the orbit determination saddle, can circumferentially semi-automatic rotating device with pencil axial locking and locking back work, when putting into written moulding moulding bed through the pencil of pencil sharpener roughing, and after the device locking that is locked, because the pencil center line constitutes certain acute angle shape angle with the line of motion of saddle bottom knife, so be higher than written wooden and lead for retractable pencil on the blade movement straight line, can be reamed easily, can not make lead for retractable pencil be subjected to the excess load distorting stress and fracture, and because the effect of semi-automatic volume pen device, saddle is advanced can cut pen, regression can be rolled up pen automatically, uninterruptedly back and forth, pencil is returned to circle, and then reaches once to cut the pen success.

Below, in conjunction with the accompanying drawings and embodiments, the utility model is further specified

Fig. 1 is a plan view from above of the present utility model.

Fig. 2 is the I-I cross section view of Fig. 1.

Fig. 3 is the II-II cross section view of Fig. 1

Fig. 4 is a power transmission gear taper seat expanded view.

Fig. 5 is three-jaw one a spring folder schematic diagram.

Among the figure: 1, the saddle stop catch 2 that advances, pencil sharpener nib moulding moulding bed 3, penknife nib moulding moulding bed 4, slide rail 5, blade 6, penknife tool housing 7, saddle 8, saddle retreats stop catch 9, cambered plate 10, power transmission shaft 11, three-jaw one spring folder 12, overcoat 13,13A, screw rod 13B, nut 14, handle 15, deposit slag bucket 16, funnel 17, power transmission gear 18, preceding rake tooth 19, Vee formation tooth 20, moving tooth bar 21, relay moving tooth spring top 22, non-slip rubber 23, spring 24, lever 25, straight pin 26, annular connecting rod 27, pawl 28, three-jaw one spring folder housing

By Fig. 1-5 as can be known:

This NEW Pb graver, has partner's formula structure that pencil sharpener and penknife combine, all be provided with written moulding moulding bed and blade respectively, it is characterized in that: penknife housing (6) base plate carries pencil sharpener for one jiao, and it is moved forward and backward by saddle (7), slide rail (4), knife rest, and stop catch (1), (8) and pencil are locked and semi-automatic commentaries on classics pen device is formed; Constitute certain acute angle shape angle with the line of motion of the affixed blade (5) in saddle (7) bottom surface with the center line of the interior pencil stub of written moulding moulding bed (3), this corner dimension is by promoting or decline cambered plate (9) is realized adjustable with housing (6) back cambered surface wallboard relative position; When pencil is placed into written moulding moulding bed (3) and by axial locking with choose the angle of the written tapering of wanting, then advance saddle (7) can cut pen, regression saddle (7) can change pen automatically by setting corner, uninterruptedly back and forth, pencil is returned to circle, and then reaches once to cut the pen success;

The device that constitutes locking pencil in the penknife tool is to be located at the outer three-jaw one spring folder (11) of cambered plate (9), this device is affixed with Hollow Transmission Shafts (10) one ends, hollow turning cylinder (10) other end passes cambered plate (9) and enters in housing (6) the afterbody wallboard, affixed with power transmission gear (17), with overcoat (12) spigot-and-socket loose joint; Three-jaw one spring folder (11), power transmission shaft (10), power transmission gear (17), (12) four in overcoat are co-located in same axis, wherein power transmission shaft (10) is relative to can freely rotating with cambered plate (9), can not move axially, cambered plate (9) is close to housing (6) afterbody cambered surface wallboard, and can be with respect to the upper and lower displacement of housing (6) afterbody cambered surface wallboard to regulate written tapering according to screw rod (13A) nut (13B);

Orbit determination saddle (7) combines with its affixed moving tooth bar (2) and the preceding rake tooth (18) on the power transmission gear (17) down; With the affixed relay moving tooth spring of housing (6) afterbody wallboard top (8) then with power transmission gear (17) on Vee formation tooth (19) combine; The crown of preceding rake tooth (18) is towards saddle (7) direction of advance, and the extended line on its tooth limit, crown right side passes the tap web of power transmission gear (17), and its tooth limit, left side has big slope left; The tooth root of the tooth root of Vee formation tooth (19) and preceding rake tooth (18) is adjacent, its crown direction is opposite, Vee formation tooth (19) and preceding rake tooth (18) are corresponding one by one to be provided with, but with respect to gear (17) rotation direction, Vee formation tooth (19) slightly stagnates thereafter than preceding rake tooth (18); When Vee formation tooth (19) root circle between cog ditch ditch is withstood in the top on relay moving tooth spring top (21), power transmission gear (17) stall, the right tooth of rake tooth (18) limit has promptly been crossed saddle (7) and has been moved back and forth midline position before corresponding, and moving tooth bar (2) and relay moving tooth spring top (21) all are located on the reciprocating motion center line of saddle (7).

As shown in Figure 5, be in tension, three pawls (27) obvolvent mutually at spring (23); Applying external force in handle (14), when spring (23) was upheld, three pawls (27) opened, and the internal diameter after it opens is greater than commercially available pencil external diameter, and the internal diameter of turning cylinder (10), overcoat (12) equates and be slightly larger than the external diameter of commercially available pencil.

By Fig. 1-5 as can be known, when advance a moving tooth bar (20) when cutting of saddle (7) breaks away from preceding rake tooth (18) on the power transmission gears (17), relay this moment moving tooth spring top (21) is in Vee formation tooth (19) crown leftward position, just in the crown right side, the elastic force potential energy that gathers together waits for release because spring gradually reduces, so continue to promote power transmission gear (17) right-hand rotation by the elastic force of spring own and the cross component force that acts on the hypotenuse, Vee formation tooth root circle between cog ditch ditch is withstood in top until relay moving tooth spring top (21), power transmission gear (17) stall, the at this moment preceding right tooth of rake tooth (18) limit has been crossed moving tooth bar (20) and has been moved back and forth midline position.

When saddle (7) retreats, because saddle (7) motion center line has been crossed on the right tooth of preceding rake tooth (18) limit, moving tooth bar (20) is so contact and act on the slope, the left side of preceding rake tooth (18), and give this hypotenuse with cross component force, power transmission gear (17) is turned right, simultaneously the top runner on relay moving tooth spring top (21) thereupon from the between cog Gou Gou position of Vee formation tooth (14) along the passive arrival crown in slope, tooth limit, arrive tooth limit, left side from crown again, beginning is moving tooth initiatively.

When moving tooth bar (20) falls back on tooth root, preparation is with saddle (7) when advancing, travelling gear (17) is though lose the M.E of moving tooth bar (20), but the top on relay moving tooth spring top (21) is in position, abrupt slope, crown left side in the time of therefore, and the pressure potential of its spring is in release conditions, so it is a bit of that power transmission gear (17) still can continue to turn right, for next moving tooth bar (20) regression moving tooth is carried out necessary preparation, reach saddle (7) thus and cut pen when advancing, change pen when retreating, overall process realizes semi-automation.Pencil is turned over a week, also just cuts pen completion, and in the middle of this, the number of teeth is many more, and each angle of changeing is more little, also just cuts roundly more, smooth more.

The utility model is with pencil sharpener and penknife collocation, make it to bring out the best in each other, thick smart combination, because lead for retractable pencil is not produced distorting stress, so almost nil to the damage rate of pencil-lead, its process velocity is fast, the quality height, no matter for vast student, still for pencil tapering and the exquisite graphical artists of the long fineness requirement of lead for retractable pencil, it can both give high-level satisfied.

For laborsaving, moving tooth bar (20) comes directly towards with parts and relay moving tooth spring top (21) that preceding rake tooth (18) is had an effect, all adopts miniature roller.

The utility model is except blade (5), three-jaw one spring folder (11) are made by ferroalloy, and remaining part all can be made of engineering plastics.

Claims

1, a kind of NEW Pb graver, has partner's formula structure that pencil sharpener and penknife combine, all be provided with written moulding moulding bed and blade respectively, it is characterized in that: the penknife base plate is loaded with pencil sharpener for one jiao, and it is moved forward and backward by saddle (7), slide rail (4), knife rest, and stop catch (1), (8) and pencil are locked and semi-automatic commentaries on classics pen device is formed; Constitute certain acute angle shape angle with the line of motion of the affixed blade (5) in saddle (7) bottom surface with the center line of the interior pencil stub of written moulding moulding bed (3), this corner dimension is by promoting or decline cambered plate (9) is realized adjustable with housing (6) back cambered surface wallboard relative position; When pencil is placed into written moulding moulding bed (3) and by axial locking with choose the angle of the written tapering of wanting, then advance saddle (7) can cut pen, regression saddle (7) can change pen automatically by setting corner, uninterruptedly back and forth, pencil is returned to circle, and then reaches once to cut the pen success.

2, NEW Pb graver according to claim 1, it is characterized in that: the device that constitutes locking pencil in the penknife tool is to be located at the outer three-jaw one spring folder (11) of cambered plate (9), this device is affixed with Hollow Transmission Shafts (10) one ends, hollow turning cylinder (10) other end passes cambered plate (9) and enters in housing (6) the afterbody wallboard, affixed with power transmission gear (17), with overcoat (12) spigot-and-socket loose joint; Three-jaw one spring folder (11), power transmission shaft (10), power transmission gear (17), (12) four in overcoat are co-located in same axis, wherein power transmission shaft (10) is relative to can freely rotating with cambered plate (9), can not move axially, cambered plate (9) is close to housing (6) afterbody cambered surface wallboard, and can be with respect to the upper and lower displacement of housing (6) afterbody cambered surface wallboard to regulate written tapering according to screw rod (13A) nut (13B).

3, NEW Pb graver according to claim 1 is characterized in that: orbit determination saddle (7) combines with its affixed moving tooth bar (2) and the preceding rake tooth (18) on the power transmission gear (17) down; With the affixed relay moving tooth spring of housing (6) afterbody wallboard top (8) then with power transmission gear (17) on the Vee formation tooth combine; The crown of preceding rake tooth (18) is towards saddle (7) direction of advance, and the extended line on its tooth limit, crown right side passes the tap web of power transmission gear (17), and its tooth limit, left side has big slope left; The tooth root of the tooth root of Vee formation tooth (19) and preceding rake tooth (18) is adjacent, its crown direction is opposite, Vee formation tooth (19) and preceding rake tooth (18) are corresponding one by one to be provided with, but with respect to gear (17) rotation direction, Vee formation tooth (19) slightly stagnates thereafter than preceding rake tooth (18); When Vee formation tooth (19) root circle between cog ditch ditch is withstood in the top on relay moving tooth spring top (21), power transmission gear (17) stall, the right tooth of rake tooth (18) limit has promptly been crossed saddle (7) and has been moved back and forth midline position before corresponding, and moving tooth bar (2) and relay moving tooth spring top (21) all move back and forth on the center line at saddle (7).

4, NEW Pb graver according to claim 1 is characterized in that: be in tension at spring (23), three pawls (27) obvolvent mutually; Applying external force in handle (14), when spring (23) was upheld, three pawls (27) opened, and the internal diameter after it opens is greater than commercially available pencil external diameter, and the internal diameter of turning cylinder (10), overcoat (12) equates and be slightly larger than the external diameter of commercially available pencil.