CN2467329Y

CN2467329Y - Lead pencil with changable writing core

Info

Publication number: CN2467329Y
Application number: CN 00251967
Authority: CN
Inventors: 刘星辰
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-29
Filing date: 2000-11-29
Publication date: 2001-12-26
Anticipated expiration: 2010-11-29

Abstract

The utility model relates to stationery, particularly a lead pencil with a changeable writing core, which is used for writing. The utility model is composed of a pencil cap (1), a pencil core (2), a pencil shell (3), a bottom shell (3) and an eraser (5). Because the utility model adopts the design, the utility model has the characteristics of low production cost, low operating cost, good flexibility, less environmental pollution, etc., the pencil shell and the pencil cap can be reused, different pencil cores, such as a hard pencil core and a soft pencil core can be conveniently replaced, and the utility model is especially suitable for painting (The utility model is no need to cut.).

Description

Lead pencil with changable writing core

The utility model relates to a kind of stationery that is used to write, particularly a kind of Lead pencil with changable writing core.

Existing pencil is of a great variety, and traditional essential pencil is arranged, and propelling pencil miscellaneous is also arranged.The advantage of Wood pencil is that cost is lower, but must cut before using, and can only disposablely use, and the timber waste greatly can not be changed the different pen core of soft or hard; And the advantage of propelling pencil is reusable except that pen core, but cost is higher, and can not change the different pen core of soft or hard, is unsuitable for the design drawing and uses.

The purpose of this utility model is to overcome above the deficiencies in the prior art and a kind of Lead pencil with changable writing core is provided.

The technical solution of the utility model is: Lead pencil with changable writing core is made up of the pen cap, pen core and a shell; The middle part of pen core and bottom are up big and down small taper shape, and pre-portion is a polygon; Shell comprises top shell and drain pan, internal thread and conical cavity are arranged at the top of top shell and drain pan, there is external screw thread the bottom and has the cone of tapering, and the polygon blind hole that matches with the pen core top is arranged in the middle of the cone of top shell, and the manhole that pen core is installed is arranged in the middle of the cone of drain pan; Pen core is installed in the shell, and the internal thread on a shell top is connected with the external screw thread of a last shell bottom, and the external screw thread of a shell bottom is connected with the internal thread on a next shell top; The pen cap is sleeved on the outside of a shell, and its profile is a regular polygon.

The further technical scheme of the utility model is: on the shell at the pen cap top erasing rubber is installed.

The utility model is owing to adopt as above design, and compared with prior art, it is low to have production and use cost, the shell and the pen cap are reusable, can change the different pen core of soft or hard easily, and flexibility is good, characteristics such as low in the pollution of the environment are particularly suitable for drawing and use (shouldn't cut).

Below in conjunction with drawings and Examples detailed structure of the present utility model is further described.

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is the A-A cutaway view of accompanying drawing 1;

Accompanying drawing 3 is the B-B cutaway view of accompanying drawing 1.

As shown in drawings: Lead pencil with changable writing core is made up of the pen cap (1), pen core (2), top shell (3), drain pan (4) and erasing rubber (5); Pen core (2) top is rectangle (as shown in Figure 2), and middle part and bottom are conical (shown in accompanying drawing 1 and the accompanying drawing 3); Internal thread (6) and conical cavity (7) are arranged at the top of top shell (3) and drain pan (4), there is external screw thread (8) bottom and has the cone (9) of tapering, the rectangle blind hole (10) that matches with pen core (2) top is arranged in the middle of the cone of top shell (3), the manhole (11) of installation pen core (2) is arranged in the middle of the cone of drain pan (4); Pen core (2) is installed in the shell, and the internal thread on a shell top is connected with the external screw thread of a last shell bottom, and the external screw thread of a shell bottom then is connected with the internal thread on a next shell top; The pen cap is installed in the outside of a shell, and its profile is a regular hexagon, and erasing rubber is installed in a shell top at pen cap top.

During installation, earlier the top with pen core (2) is installed in the rectangle blind hole (10) of top shell (3), then with drain pan (4) a section be installed in successively top shell (3) below, again the pen cap (1) is sleeved on the outside of a shell and loads onto erasing rubber (5).After bottom joint shell pen core (2) down uses up, it is taken off be contained in topmost one and save the top of a shell and get final product.After pen core exhausts, change a new pen core (2) again, also can change the pen core (2) of different soft and hard as required at any time, use when being particularly suitable for painting (can be non-sharpenning).

Claims

1, a kind of Lead pencil with changable writing core is characterized in that being made up of the pen cap, pen core and a shell; The middle part of pen core and bottom are up big and down small taper shape, and the top is a polygon; Shell comprises top shell and drain pan, internal thread and conical cavity are arranged at the top of top shell and drain pan, there is external screw thread the bottom and has the cone of tapering, and the polygon the region between the heart and the diaphragm hole of matching with the pen core top is arranged in the middle of the cone of top shell, and the manhole that pen core is installed is arranged in the middle of the cone of drain pan; Pen core is installed in the shell, and the internal thread on a shell top is connected with the external screw thread of a last shell bottom, and the external screw thread of a shell bottom is connected with the internal thread on a next shell top; The pen cap is sleeved on the outside of a shell, and its profile is a regular polygon.

2, Lead pencil with changable writing core as claimed in claim 1 is characterized in that: on the shell at the pen cap top erasing rubber is installed.