CN2328524Y

CN2328524Y - Automatic sharpening convenient pencil

Info

Publication number: CN2328524Y
Application number: CN 98232512
Authority: CN
Inventors: 冯涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-11
Filing date: 1998-03-11
Publication date: 1999-07-14
Anticipated expiration: 2008-03-11

Abstract

The utility model relates to a pencil, particularly an automatic sharpening convenient pencil which can be used for a long time, and can automatically sharpen pencil tip in use conveniently. The automatic sharpening convenient pencil is mainly composed of a pencil holder, a rotary cap, an inner cylinder, a pencil core inner rod, a sharpener, etc. When the automatic sharpening convenient pencil is used, the rotary cap is rotated clockwise, and a pencil core which is sharpened tip extends from the lower end of the pencil holder for writing. When the automatic sharpening convenient pencil is not used, the rotary cap is rotated counterclockwise, and the pencil core retracts into the pencil holder. The utility model has the advantages of reasonable structure, convenient operation, long service life without using a pencil sharpener, etc., and the pencil tips are not easy to break. The utility model can be widely used as a pencil writing tool for middle and primary school students, and can also be used as a traditional pencil for various occasions.

Description

Automatically cut Convenient pencil

The utility model relates to a kind of pencil, particularly a kind ofly can use for a long time, can cut nib when using again automatically and cut Convenient pencil very easily automatically.

In existing technical scheme, a kind of is the common pencil that penholder is made of timber, and its shortcoming is: consume forest tree resource; Pencil needs to cooperate with pencil-knife, makes troubles to use; Produce wood chip during the pencil cutting, unhygienic.Another is by pushing the propelling pencil that the top just can go out pen core, though it has overcome above-mentioned some deficiency since its adopt be ultra-fine pen core, very easily fracture in the use, again because of pen core usually can not be free by going out, its effect is also unsatisfactory.

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and provide a kind of without timber, can use, can cut automatically when using the automatic cutting Convenient pencil of nib for a long time.

The solution that realizes the utility model purpose is: a kind of automatic cutting Convenient pencil, comprise penholder and pencil-lead, its special character is: described penholder is a cylindrical hollow stems, be arranged with two top-down helix grooves on the inwall, be provided with the inner core of installing movingly with it in the bar, there is a cutter that is connected with its stationary fit its bottom; Described inner core is a hollow pipe, and tube wall axially has two guide grooves along it, and its top radially has one group of slotted eye, by two guide grooves bar in the pen core is housed in its pipe, and turncap is equipped with in its upper end; Bar is a cylinder in the described pen core, one pin is radially arranged at its top, the bottom is provided with reservoir hole and securing member along central axis, described pin two ends are installed in the guide groove of described inner core, can upper and lowerly slide, its two ends places respectively in two helix grooves of described penholder inwall, and can slide along helix groove; Described pencil-lead is in the securing member stationary fit is installed on described reservoir hole; The periphery of described turncap is provided with one group of raised line, and cooperation is assemblied in one group of slotted eye of described inner core; Described cutter is a conically shaped body, and its center is provided with the pen core hole that falls along axis, along the pen core hole periphery that falls blade is housed, and the blade blade points to axis, and has angle with axis.

Accompanying drawing has been described a preferred embodiment of the present utility model.

Fig. 1 is the part drawing of the utility model embodiment.

Fig. 2 is the structure principle chart of the utility model embodiment.

Below in conjunction with accompanying drawing content of the present utility model is described in detail.

Know referring to Fig. 1, Fig. 2: the utility model comprises a penholder 1 and a pencil-lead 15, its special character is: described penholder 1 is a cylindrical hollow stems, be arranged with two helix grooves 2 on the inwall, be provided with in the bar and its inner core of installing movingly 3, there is a cutter 12 that is connected with its stationary fit the bottom; Described inner core 3 is a hollow pipe, and its axial symmetry of tube wall upper edge has two guide grooves 4, and its top radially is provided with one group of slotted eye 5, by two guide grooves 4 bar 6 in the pen core is housed in its pipe, and turncap 10 is equipped with in its upper end; Bar 6 is a cylinder in the described pen core, and a pin 7 is radially arranged at its top, and the bottom is provided with reservoir hole 8 and securing member 9 along central axis; Described pin 7 two ends are installed in the guide groove 4 of described inner core 3, can upper and lowerly slide, and its two ends places respectively in two helix grooves 2 of described penholder 1 inwall, and can slide along helix groove 2; Described pencil-lead 15 is in securing member 9 stationary fits are installed on described reservoir hole 8; The periphery of described turncap 10 is provided with one group of raised line 11, and cooperation is assemblied in one group of slotted eye 5 of described inner core 3; Described cutter 12 is a conically shaped body, and its center is provided with the pen core hole 13 that falls along axis, along pen core hole 13 peripheries that fall blade 14 is housed, and blade 14 blades point to axis, and have angle with axis.

Operation principle of the present utility model is as follows: hand-held penholder 1, clockwise turn turncap 10, cause inner core 3 to rotate, with the also synchronous rotation of bar 6 in the pen core that inner core 3 links to each other by pin 7 with it, because the rotation of bar 6 in the pen core, pin 7 on it just is rotated down slip in two helix grooves 2 of penholder 1 inwall, driving the interior bar 6 of pen core also is rotated down mobile, the pencil-lead 15 that is installed on bar 6 lower ends in the pen core also is rotated down mobile, drop to the fall pencil-lead 15 in hole 13 of pen core in the cutter 12, under the shear action of blade 14, stretch out for writing after being sharpened and from cutter 12 lower ends.Time spent not, can counter-clockwise turn turncap 9, pencil-lead 15 is in the regracting penholder.

In conjunction with the foregoing description as can be seen, the utility model has following advantage compared to existing technology:

1. penholder is saved forest tree resource without timber;

2. rational in infrastructure, needn't the adapted pencil-knife, easy to use;

The penholder life-span long, nib is frangibility not.

The utility model can be widely used as primary and secondary students' pencil writing implement, also can be used for using the various occasions of traditional pencil.

Claims

1. one kind is cut Convenient pencil automatically, comprise penholder (1) and pencil-lead (15), it is characterized in that: described penholder (1) is a cylindrical hollow stems, be arranged with two helix grooves (2) on the inwall, be provided with the inner core of installing movingly with it (3) in the bar, there is a cutter (12) that is connected with its stationary fit the bottom.

2. automatic cutting Convenient pencil as claimed in claim 1, it is characterized in that: described inner core (3) is a hollow pipe, its axial symmetry of tube wall upper edge has two guide grooves (4), its top radially is provided with one group of slotted eye (5), turncap (10) is equipped with in its upper end, by two guide grooves (4) bar (6) in the pen core is housed in its pipe.

3. automatic cutting Convenient pencil as claimed in claim 1 is characterized in that: bar (6) is a cylinder in the described pen core, and a pin (7) is radially arranged at its top, and the bottom is provided with reservoir hole (8) and securing member (9) along central axis.

4. as claim 1 or 2 or 3 described automatic cutting Convenient pencils, it is characterized in that: described pin (7) two ends are installed in the guide groove (4) of described inner core (3), can upper and lowerly slide, its two ends places respectively in two helix grooves (2) of described penholder (1) inwall, and can slide along helix groove (2).

5. automatic cutting Convenient pencil as claimed in claim 4, it is characterized in that: described cutter (12) is a conically shaped body, its center is provided with the pen core hole (13) that falls along axis, along pen core hole (13) periphery that falls blade (14) is housed, blade (14) blade points to axis, and has angle with axis.