CN2202642Y - Active pencil - Google Patents

Abstract

The utility model relates to a novel propelling pencil which comprises a pencil core and a penholder. The utility model is characterized in that the cylinder surface of the pencil core is processed with screw thread, the sectional plane of the pencil core is not round, the penholder comprises an upper section and a lower section which are connected by a concave-convex structure and can rotate correspondingly, the middle of two sections of the penholder is provided with a hole in which the pencil core is arranged, the hole sectional plane of one of two sections of the penholder forms a round shape and is provided with the screw thread matched with the pencil core, and the hole sectional plane of the other section is a non-round hole matched with the sectional plane of the pencil core. The propelling pencil has the advantages of simple structure, convenient pencil core replacing, and capability of matching with thicker pencil cores.

Description

Active pencil

The utility model belongs to the stationery field, relates to a kind of propelling pencil.

There have two kinds of pencils to use at present to be the most extensive, and a kind of is Wood-bar pencil, and manufacturing process is simple, low price, but penholder can only use once the many timber of annual consumption; Another kind is the propelling pencil of thin pen core, and the general structure of this pencil is comparatively complicated, and manufacturing cost is higher, and because pen core is thinner, very easily fractures, and the scope of application is little.

The purpose of this utility model is: provides a kind of and can change thick pen core, and simple in structure, the new mechanical pencil that the scope of application is big.

The purpose of this utility model is achieved in that a kind of new mechanical pencil of design, comprises pen core and penholder, and it is characterized in that: it is non-circular being processed with screw thread and its cross section on the cylinder of described pen core; Described penholder comprise mutually connect with concaveconvex structure and can be in relative rotation in the middle of two sections of the porose first half and Lower Halves, described pen core is packed in the hole of described two sections penholders; One section cross section, hole in two sections of described penholder is for circle and the screw thread that matches with described pen core is arranged; The non-circular hole that the cross section in the hole of another section is complementary for the cross section with described pen core.

Aforesaid new mechanical pencil relatively rotates two parts of penholder, and its screw thread can drive pen core and make stretching motion, so that write, collect and change pen core.This propelling pencil is simple in structure, the replacing pen core is convenient, and pen core can be done slightlyer, thereby the scope of application is big.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a specific embodiments schematic diagram of the present utility model;

The shape that Fig. 2 is adopted for pen core cross section in this programme.

New mechanical pencil with reference to the accompanying drawings comprises pen core 1 and penholder 2, it is characterized in that: be processed with on the cylinder of described pen core 1 screw thread and its cross section serve as reasons circular by two parallel lines cut two arc and form non-circular; Described penholder 2 comprise mutually connect with concaveconvex structure and can be in relative rotation in the middle of 4 two sections of the porose first half 3 and Lower Halves, described pen core 1 is packed in the hole of 2 two sections on described penholder; The bottom of the penholder first half 3 is a convex structure, and the upper end of penholder Lower Half 4 is a concave structure; The screw thread that the described pen core 1 of the Kong Youyu of described penholder bottom 4 matches; The non-circular hole that the cross section of the described pen core 1 of Kong Weiyu on described penholder top 3 is complementary, the cross section in the hole of described penholder bottom 4 are circular.

The concavo-convex draw bail of described two sections penholders can be made structure with bayonet, makes behind two sections fastenings, can relatively rotate, but be difficult for throwing off.

Because this propelling pencil adopts thicker pen core, for adapting to the scope of application of broad, need sometimes the pen core end is cut carefully, a pencil sharpener 5 is adorned on the top that is preferably in described penholder top 3.Penholder top 3 can adopt engage thread or friction mode to link with pencil sharpener 5, so that change pen core and take off pencil sharpener and cut pen core.

Claims (3)

1, a kind of new mechanical pencil comprises pen core (1) and penholder (2), it is characterized in that: it is non-circular being processed with screw thread and its cross section on the cylinder of described pen core (1); Described penholder (2) comprise mutually connect with concaveconvex structure and can be in relative rotation in the middle of (4) two sections of the porose first half (3) and Lower Halves, described pen core (1) is packed in the hole of (2) two sections on described penholder; One section cross section, hole in two sections of described penholder (2) is for circle and the screw thread that matches with described pen core (1) is arranged, the non-circular hole that the cross section in the hole of another section is complementary for the cross section with described pen core (1).

2, new mechanical pencil as claimed in claim 1 is characterized in that: adorn a pencil sharpener (5) on the top on described penholder top (3).

3, new mechanical pencil as claimed in claim 2 is characterized in that: described penholder top (3) and described pencil sharpener (5) threadably or friction mode link.