CN203713307U

CN203713307U - Novel pencil

Info

Publication number: CN203713307U
Application number: CN201420082952.8U
Authority: CN
Inventors: 闫化存
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-02-26
Filing date: 2014-02-26
Publication date: 2014-07-16
Anticipated expiration: 2024-02-26

Abstract

The utility model discloses a novel pencil which comprises a pencil holder and pencil lead accommodated inside the pencil holder, wherein the pencil lead is fine pencil lead of which the diameter is 0.5-1.2 mm; the pencil holder comprises two layer; the inner layer is a powder layer which is used for wrapping the fine pencil lead and is bonded together, and the outer layer is a wooden layer. The pencil is used according to the following steps: sharpening the pencil to be of a cone shape till the tail end of the fine pencil lead is parallel to the tail end of the powder layer, stopping sharpening, peeling off a small segment of the powder layer by hand or a knife, then ensuring the length that the exposed part of the fine pencil lead is convenient for writing, after the exposed part of the fine pencil lead is shortened after being used for writing, continuously peeling off a small segment of the powder layer by hand or the knife till the tail end of the powder layer is parallel to the tail end of the wooden layer, and further sharpening the pencil till the tail end of the fine pencil lead is parallel to the tail end of the powder layer. The pencil has the advantages that firstly, the lead is saved, secondly, the pencil does not required to be repeatedly sharpened, and thirdly, the stroke weights of characters written with the pencil are identical, and the pencil has the advantages of both ordinary pencils and propelling pencils.

Description

A kind of novel pencil

Technical field

The utility model relates to a kind of pencil, relates in particular to a kind ofly can save consumption of lead and not need repeatedly to roll up the novel pencil of cutting.

Background technology

The basic structure of pencil is in the middle of wooden penholder, to inlay a thicker lead for retractable pencil (diameter of general lead for retractable pencil is 1.8～2.1mm) at present, the raw material of lead for retractable pencil is graphite and secondary clay, graphite is colouring agent, and secondary clay is binding agent, and granular graphite is bondd.During use, with cutter, penholder is whittled into taper lead for retractable pencil is exposed, but in the process of cutting, for the lines that make to write or paint are out thinner, thicker lead for retractable pencil is also cut into taper, a plumbous cake has 2/3 to be reamed substantially, can cause like this waste of lead for retractable pencil.

In addition, also there is a main drawback in existing pencil, the very thin lead for retractable pencil of cutting is exactly pure by mill soon when writing, and the font weight writing out is different, therefore wood pencil is in order to maintain the smooth time sharpening a pencil with saving of writing, need to often roll up and cut, need to repeatedly cut carefully, affect mood.Existing propelling pencil, uses thinner lead for retractable pencil (its diameter, in 0.9mm left and right, is generally 0.5-1.2mm), and the synthesis technique of its thin core is also different, mainly take synthetic resin as binding agent, has the advantages such as the Qu Qiangdu of disturbing is high, writing quality is good.

Summary of the invention

The purpose of this utility model is to overcome defect of the prior art, provides a kind of and can save consumption of lead and not need repeatedly to roll up the novel pencil of cutting.

The utility model is achieved through the following technical solutions:

A novel pencil, comprises penholder and is contained in the lead for retractable pencil in this penholder, described lead for retractable pencil is thin lead for retractable pencil, and described penholder comprises two-layer, and internal layer is the powder bed being bonded together of the described thin lead for retractable pencil of parcel, and skin is layer of wood.

Preferably, the diameter of described thin lead for retractable pencil is 0.5-1.2mm, further preferred 0.5-0.7mm.

Preferably, the thickness of described powder bed is 0.5-2.0mm, further preferred 1.5mm.

Preferably, the thickness of described layer of wood is 5-6mm.

Preferably, described powder bed is clay layer.Powder bed can be with common clay (not being clay), and clay has certain viscosity, can be bonded together.

Preferably, the crushing strength of described powder bed, for kind of a 0.2-1kp, is preferably 0.5kp.The crushing strength of the utility model powder bed refers to the rear inherent binding ability of powder bonding, changes a kind of saying and just refers to that powder bed is the in the situation that of uniform stressed, the maximum pressure can bear before cracked or destruction.Result of study shows, general normal writing used pencil to only have 0.05 ~ 0.1kp to paper pressure, therefore do not destroy powder bed when making generally to write, and peel off with hand or pocket knife than being easier to, therefore the crushing strength of powder bed should be greater than 0.1kp, but can not be too large, through test when the crushing strength of powder bed is 0.2-1kp in comparatively desirable scope, optimum is 0.5kp.

Preferably, for the characteristic of powder bed of the present utility model, the applicant, through repetition test, develops a kind of powder bed of the present utility model that is applicable to, and the component by following weight portion of described powder bed forms: 48 parts, sawdust; 34 parts of stone flours; 18 parts of secondary clays.Wherein, sawdust refer to carry out timber add man-hour because cutting and from trees the foam shape wood chip of fallen trees itself; Stone flour is that stone pit produces the discarded object producing in stone process; Secondary clay be a secondary clay being formed by weathering through the drift in rainwater, rivers and creeks, the migration of wind-force and the secondary clay that forms in low-lying place deposition.

Preferably, described last particle diameter is less than 1mm, described stone flour, secondary clay pulverize for granularity be 80 orders.

Preferably, the preparation method of described powder bed crosses 24 mesh sieves by the sawdust of described weight portion, and described stone flour, secondary clay are crossed 80 mesh sieves, adds 8% water of powder bed gross mass, is drying to obtain after mixing extruding.

The invention also discloses the using method of above-mentioned novel pencil, step is as follows: by the tapered end of thin lead for retractable pencil and the end of powder bed of making of pencil sharper when concordant, stop cutting, with hand or pocket knife, peel a bit of powder bed off, make the length of exposing thin lead for retractable pencil be convenient to write, after writing after the thin lead for retractable pencil exposing shortens, continue again to peel a bit of powder bed off with hand or pocket knife, until the end of powder bed and the end of layer of wood be when concordant, then it is concordant to the end of thin lead for retractable pencil and the end of powder bed to sharpen a pencil.

The utility model has the advantages that:

(1) economize on lead, with respect to pencil of the prior art, can save approximately 2/3 lead;

(2) do not need repeatedly to roll up and cut, once volume cut after by peeling powder bed off, can use relatively long lead for retractable pencil;

(3) font weight writing out is identical, has advantages of common pencil and propelling pencil simultaneously.

Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:

Fig. 1 is the structural representation of novel pencil of the present utility model.

Wherein: thin lead for retractable pencil 1; Powder bed 2; Layer of wood 3.

The specific embodiment

Below with reference to the utility model, embodiment is further described the utility model.

As shown in Figure 1, a kind of novel pencil, comprise penholder and be contained in the lead for retractable pencil in this penholder, described lead for retractable pencil is that thin lead for retractable pencil 1(diameter is 0.5mm), described penholder comprises two-layer, internal layer is 1.5mm for wrapping up the powder bed 2(thickness being bonded together of described thin lead for retractable pencil), outer is that layer of wood 3(thickness is 5.5mm).

The serve as reasons component of following weight portion of described powder bed 2 forms: 48 parts, sawdust; 34 parts of stone flours; 18 parts of secondary clays.Wherein, sawdust is fruit tree sawdust, and water content is 10%(W/W), particle diameter is 1mm; Described stone flour specification is powdered whiting; Granularity is 2500 orders, wherein CaCO3 content >=93(W/W, %); Calcium content >=35(W/W, %); Magnesium content≤0.5(W/W, %) iron-holder≤0.2(W/W, %) density: 2.7(g/cm3).

Preparation method crosses 24 mesh sieves by the sawdust of described weight portion, and described stone flour, secondary clay are crossed 80 mesh sieves, adds 8% water of powder bed gross mass, is drying to obtain after mixing extruding (100kp).

The mensuration of crushing strength: get the powder bed after system, length and width are respectively 1cm, and thickness is 1.5mm, the pallet that is placed on pallet dynamometer is central.Then with finger nail, powder bed is exerted pressure, when powder bed breaks, calculate the maximum pressure applying before breaking, measure 3 samples, average as 0.50kp.

The invention also discloses the using method of the novel pencil of the present embodiment, step is as follows: by the tapered end of thin lead for retractable pencil and the end of powder bed of making of pencil sharper when concordant, stop cutting, with hand or pocket knife, peel a bit of powder bed off, make the length of exposing thin lead for retractable pencil be convenient to write, after writing after the thin lead for retractable pencil exposing shortens, continue again to peel a bit of powder bed off with hand or pocket knife, until the end of powder bed and the end of layer of wood be when concordant, then it is concordant to the end of thin lead for retractable pencil and the end of powder bed to sharpen a pencil.

Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.

Claims

1. a novel pencil, comprises penholder and is contained in the lead for retractable pencil in this penholder, it is characterized in that, described lead for retractable pencil is that diameter is the thin lead for retractable pencil of 0.5-1.2mm, described penholder comprises two-layer, and internal layer is the powder bed being bonded together of the described thin lead for retractable pencil of parcel, and skin is layer of wood.

2. novel pencil according to claim 1, is characterized in that, the thickness of described powder bed is 0.5-2.0mm.

3. novel pencil according to claim 1, is characterized in that, the thickness of described layer of wood is 5-6mm.

4. novel pencil according to claim 1, is characterized in that, described powder bed is clay layer.