CN103253037A

CN103253037A - Extensible plastic pencil

Info

Publication number: CN103253037A
Application number: CN2013101452139A
Authority: CN
Inventors: 陈建刚; 刘莉君
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2013-04-10
Filing date: 2013-04-10
Publication date: 2013-08-21

Abstract

The invention discloses an extensible plastic pencil, and belongs to stationery. The extensible plastic pencil mainly solves the problems of structures and materials of the stationery, and enables the stationery to be used conveniently. The extensible plastic pencil is composed of a pencil cap, a head portion, middle sections, a tail portion and a rubber top end, wherein other small sections of the pencil are all made of recyclable plastics except the pencil cap and the rubber top end, threads are machined on the outer circumferential surface and the inner circumferential surface of each section, a tapered pencil lead is fixed at one end of each section of plastic outer shells at the head portion, the middle sections and the tail portion, and the sections are connected in a screwing mode through the inner screwing threads and the outer screwing threads. When the pencil lead of the head portion is used up, other parts of the pencil keep immobile, the threads at the head portion of the pencil are rotated anticlockwise, the head portion of the plastic pencil is removed, the other parts are removed in the same way as the head portion when not used, the outer shells of the plastic pencil can be recycled after being used, and the middle sections of the plastic pencil can be increased and reduced according to personal habits in the use process. The extensible plastic pencil has the advantages of being capable of avoiding loss of a large amount of wood, paint and the pencil lead, eliminating the potential risks generated when a pupil uses a wood pencil, and being convenient to operate, simple in structure, and strong in looseness prevention capacity.

Description

A kind ofly exempt to cut plastic pencil

1, affiliated technical field

The present invention relates to a kind of environmental protection and exempt to cut plastic pencil, especially can improve the result of use of pencil, avoid Wood pencil to a large amount of losses of timber, paint and lead for retractable pencil.

2, background technology

At present, known general Wood pencil of our every uses will slattern the timber of 3.367 grams, the paint of 0.237 gram, the pen core of 0.702 gram, has only the pen core of 0.488 gram to be utilized, and the utilization rate of pen core has only 41%.The whole nation has so much people using Wood pencil; will consume a lot of trees, paint, graphite and clay because use Wood pencil every day; it is very dangerous that the while pupil removes to cut Wood pencil at the use pocket knife; we should reduce the use Wood pencil; use environmental protection instead and exempt to cut plastic pencil, like this could our environment of better protection.This pencil is tough and tensile, anti-to be write, frangibility not, replaces Wood pencil can save a large amount of timber, paint and lead for retractable pencil with its.

3, summary of the invention

There is avoidable defective on structure, manufacture craft and the material in order to overcome existing Wood pencil, the invention provides a kind of employing recyclable plastics material pencil, every pencil is to be formed by being threaded by 5 segments, pencil-lead is fixed on an end of every segment, can realize that environmental protection exempts to cut plastic functional.

The technical solution adopted for the present invention to solve the technical problems is: exempting to cut plastic pencil is by the cap for brush, head, interlude, afterbody and rubber top are formed, every pencil is except the cap for brush and rubber top, all the other each sections all adopt the recyclable plastics material to make, each section outer circumference surface and inner peripheral surface are processed with screw thread, the pencil-lead of taper is fixed on head, one end of interlude and each section of afterbody plastic casing, screwing screw thread and outside by inside between each section screws screw thread and screws and be connected, when the head pencil-lead is finished using, can keep the pencil remainder motionless, be rotated counterclockwise the pencil head threads, can remove the plastic pencil head, remainder is finished using and to remove method the same for head, the plastic pencil shell of finishing using is recyclable, in use also can increase and decrease the plastic pencil interlude voluntarily according to individual's custom.

The invention has the beneficial effects as follows that can effectively avoid a large amount of timber, paint and lead for retractable pencil losses and eliminate the hidden danger that the pupil uses Wood pencil, easy to operate, simple in structure, anti-loosening ability is strong simultaneously.

4, description of drawings

Fig. 1 is head construction schematic diagram of the present invention.

Fig. 2 is part-structure schematic diagram of the present invention.

Fig. 3 is pen cap structure schematic diagram of the present invention.

Fig. 4 is rubber cap structure schematic diagram of the present invention.

Fig. 5 screws the helicitic texture schematic diagram for inside and outside of the present invention.

Fig. 6 is structural representation of the present invention.

Among the figure, the 1-pencil-lead; The 2-head; 3-; The 4-afterbody; 5,6,7-interlude; The 8-outside screws screw thread; 9-column rubber; The 10-cap for brush; 11-rubber top cover.

5, the specific embodiment

The present invention is described in detail below in conjunction with the drawings and specific embodiments.

This invention design absorbs the advantage of traditional design, in conjunction with the modern designs innovative idea, meets user's requirement more.Mainly show: with reference to figure 1, Fig. 2, Fig. 5, Fig. 6, it is by the cap for brush (10), head (2), interlude (5,6,7), afterbody (4) and rubber top (11) are formed, every pencil is except the cap for brush (10) and rubber top (11), be to adopt the recyclable plastics material to make by 5 segments, each section outer circumference surface and inner peripheral surface are processed with screw thread, the pencil-lead of taper (1) is fixed on head (2), interlude (5,6,7) and an end of afterbody (4) each section plastic casing, screwing screw thread (3) and outside by inside between each section screws screw thread (8) and screws and be connected, when the pencil-lead (1) of head (2) is finished using, can keep the pencil remainder motionless, be rotated counterclockwise the screw thread of pencil head (2), can remove the plastic pencil head, remainder is finished using and to remove method the same for head, the plastic pencil shell of finishing using is recyclable, in use also can increase and decrease plastic pencil interlude (5 voluntarily according to individual's custom, 6,7).

With reference to Fig. 3, the cap for brush of the present invention (10) is shaped as hollow bullet-shaped structure, is processed with screw thread at its inner cavity surface, in order to screwing with pencil head (2).

With reference to Fig. 4, rubber of the present invention top (11) structure, an end outer surface is processed with screw thread, in order to screwing with pencil afterbody (4); One end is equipped with cylindrical rubber, in order to wiping usefulness.

Claims

1. exempt to cut plastic pencil for one kind, it is by the cap for brush (10), head (2), interlude (5,6,7), afterbody (4) and rubber top (11) are formed, it is characterized in that: every pencil is except the cap for brush (10) and rubber top (11), be to adopt the recyclable plastics material to make by 5 segments, each section outer circumference surface and inner peripheral surface are processed with screw thread, the pencil-lead of taper (1) is fixed on head (2), interlude (5,6,7) and an end of afterbody (4) each section plastic casing, screwing screw thread (3) and outside by inside between each section screws screw thread (8) and screws and be connected, when the pencil-lead (1) of head (2) is finished using, can keep the pencil remainder motionless, be rotated counterclockwise the screw thread of pencil head (2), can remove the plastic pencil head, remainder is finished using and to remove method the same for head, and the plastic pencil shell of finishing using is recyclable.

2. according to claim 1ly exempt to cut plastic pencil, it is characterized in that: the described cap for brush (10) is shaped as hollow bullet-shaped structure, is processed with screw thread at its inner cavity surface, in order to screwing with pencil head (2).

3. according to claim 1ly exempt to cut plastic pencil, it is characterized in that: described rubber top (11) is cylindrical structural, and an end outer surface is processed with screw thread, and in order to screwing with pencil afterbody (4), an end is equipped with cylindrical rubber, in order to wiping usefulness.