CN201530229U

CN201530229U - Eraser used for movable pencil and eraser fixing base

Info

Publication number: CN201530229U
Application number: CN2009202097398U
Authority: CN
Inventors: 刘刚; 刘天元; 盛海波
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-16
Filing date: 2009-09-16
Publication date: 2010-07-21
Anticipated expiration: 2019-09-16

Abstract

An eraser used for a movable pencil comprises a first cylindrical body and a second cylindrical body axially extending along the first cylindrical body. The diameter of the second cylindrical body is smaller than that of the first cylindrical body. The utility model further provides an eraser fixing base for a movable pencil, the eraser fixing base is a hollow pipe fitting and is provided with a first inner hole and a second inner hole, the first inner hole is used for holding the first cylindrical body of the eraser, the second inner hole is used for holding the second cylindrical body of the eraser, and the diameter of the first inner hole is larger than that of the second inner hole. When used at the first time, one end of the first cylindrical body of the eraser is exposed, and the second cylindrical body is hidden inside the eraser fixing base. When the portion of the first cylindrical body which is exposed is run out, the eraser can be taken out, turned and arranged on the eraser fixing base, and then the second cylindrical body is exposed. Therefore, the eraser can be used again and has doubled service life. The eraser is simple in structural design, brings convenience for users to use, can be carried with the movable pencil, and is convenient in use.

Description

Propelling pencil erasing rubber and erasing rubber holder

Technical field

The utility model relates to a kind of erasing rubber, the erasing rubber that uses on particularly a kind of propelling pencil.

Background technology

Erasing rubber is of a great variety in the market.Press usability, can be divided into fixed erasing rubber and movable erasing rubber, for example the afterbody of the Wood pencil that early uses can be embedded with an erasing rubber, and an end of erasing rubber is fixed in the rubber seat, and the other end stretches out.Erasing rubber can not re-use immediately after the erasing rubber external part is finished using, and has so just caused the waste of part erasing rubber.Can be divided into two types again as for movable erasing rubber, a kind of propelling pencil afterbody that is placed in still can freely take off, this occupation mode improves to some extent than the front is a kind of, and promptly an end uses also and can take off use, and service efficiency gets a promotion.Another kind is all-in, promptly is not positioned on any other object, and is though this mode service efficiency is higher, a kind of strong before portability does not have.Divide by profile, can be divided into formal style and informal style two classes.The shape of rule has multiclass such as the cylinder bodily form, cuboid, the parallel four limit bodily forms.Irregularly shaped changeful especially.Press color differentiating in addition, kind is various especially.But these erasing rubbers just change on shape and color merely, still do not change on the substantial service efficiency.

Summary of the invention

The purpose of this utility model be to provide a kind of two ends all can use, simple in structure easy to use, easy to carry and make the more comfortable practical erasing rubber of pencil pressing.

The purpose of this utility model is achieved like this, a kind of propelling pencil erasing rubber is provided, it comprises: one first column and is along axially extended second column of described first cylinder, and the diameter of described second column is less than the diameter of described first column.

Preferably, the length of described first column is 3 to 4 times of length of described second column.

Preferably, between described first column and described second column, be formed with a step.

Preferably, described first column and described second column are cylinder.

Preferably, the cross section of described first column and described second column is quadrangle.

The utility model also provides a kind of propelling pencil erasing rubber holder, described erasing rubber holder is a hollow pipe fitting and has first endoporus that is used for holding first column of erasing rubber, described erasing rubber holder also has second endoporus that is used for holding second column of described erasing rubber, and the diameter of described first endoporus is greater than the diameter of described second endoporus.

Preferably, between described first endoporus and one second endoporus, be formed with an erasing rubber holder step, to block first column of described erasing rubber.

Preferably, described erasing rubber holder step is arranged on and makes described erasing rubber first column expose the position that length outside the described erasing rubber holder equals the length of described erasing rubber second column.

Preferably, described first endoporus and described second endoporus are circular hole.

Propelling pencil erasing rubber of the present utility model has the following advantages:

1. when one section use of prolongation in the service life of erasing rubber---described erasing rubber will be use up, can also take out tune and re-use other one section.And common erasing rubber can only use by an end.So more common erasing rubber prolongs one times its service life.

2. erasing rubber simple in structure is convenient to understand and used--and-described erasing rubber is equipped with corresponding erasing rubber holder again by making the diameter difference of two sections columns, has realized the two ends workability.Simple in structure thereby be convenient to that the user understands and use.

3. erasing rubber is easy to carry---because described erasing rubber is placed on the erasing rubber holder of propelling pencil, so can carry together with propelling pencil, the user can use erasing rubber at any time when using propelling pencil.

4. make the propelling pencil pressing more comfortable---because described erasing rubber is to be placed in the propelling pencil afterbody, so in the time of user's pressing afterbody erasing rubber, feel can be more comfortable.

Below in conjunction with accompanying drawing, the utility model propelling pencil is carried out concrete description with a preferred embodiment of erasing rubber.

Description of drawings

Fig. 1 (a) is the front view of the utility model propelling pencil with a preferred embodiment of erasing rubber;

Fig. 1 (b) is the stereogram of the utility model propelling pencil shown in the figure (1a) with a preferred embodiment of erasing rubber;

Fig. 1 (c) is the utility model propelling pencil shown in the figure (1a) with erasing rubber front view in use for some time;

Fig. 1 (d) is the stereogram of the propelling pencil shown in Fig. 1 (c) with erasing rubber;

Fig. 2 (a) is and the longitudinal sectional view of the utility model propelling pencil with the matching used erasing rubber holder of erasing rubber;

Fig. 2 (b) is the stereogram of the erasing rubber holder shown in Fig. 2 (a);

Vertical partial sectional view of Fig. 3 (a) preferred embodiment that to be the utility model propelling pencil use in propelling pencil with erasing rubber;

Fig. 3 (b) is to use erasing rubber after a period of time at vertical partial sectional view of propelling pencil afterbody.

The specific embodiment

Now see also Fig. 1 (a) to Fig. 1 (d), there is shown of the preferred embodiment of the utility model propelling pencil with erasing rubber 1.

To shown in Fig. 1 (d), the utility model propelling pencil is made up of two sections columns not of uniform size with erasing rubber 1 as Fig. 1 (a).To the preferred embodiment shown in Fig. 1 (d), described column is cylinder at Fig. 1 (a).Specifically, erasing rubber 1 comprises: one first cylinder 11 and is along axially extended second cylinder 12 of described first cylinder.The diameter of described first cylinder 11 is greater than the diameter of second cylinder 12, and preferably, the axial length of first cylinder 11 is 3-4 times of second cylinder 12.Has an erasing rubber step 13 between first cylinder 11 and second cylinder 12.Fig. 1 (c) and Fig. 1 (d) show the form after erasing rubber 1 uses for the first time.Compare with the erasing rubber 1 shown in Fig. 1 (a), first cylinder 11 will be use up and spent 1/3rd axial length.

Fig. 2 (a) and Fig. 2 (b) show and the utility model propelling pencil matching used erasing rubber holder 2 of erasing rubber.Described holder 2 is hollow pipe fittings, can for example be made of plastics.Circular hole 21 is arranged at an end inside of described holder 2 in one first, is used for holding described first cylinder 11 of described erasing rubber 1.Be close to circular hole 21 in described first and be provided with circular hole 22 in one second, be used for holding described second cylinder 12 of described erasing rubber 1 along the axis direction of circular hole 21 in described first.The diameter of circular hole 21 is greater than the diameter of the described second interior circular hole 22 in described first.The other end inside of described holder is provided with circular hole 24 in the 3rd, and in order to connect another hollow pipe fitting that is used for holding lead for retractable pencil in the propelling pencil, described another hollow pipe fitting all can be seen in common propelling pencil, does not repeat them here.The diameter of the circular hole 21 and the second interior circular hole 22 is a bit larger tham described first cylinder 11 of described erasing rubber 1 and the diameter (for example 0.2 millimeter) of second cylinder 12 respectively in described first, its objective is to make the user in transposing erasing rubber 1, not have bigger resistance, wipe 1 discrepancy erasing rubber holder 2 with Convenient rubber.

In addition, see also Fig. 2 (b), the hole wall of circular hole 21 is provided with a protrusion muscle groove 25 (can be arranged on the optional position of the hole wall of circular hole 21 in first) in first, the purpose of described protrusion muscle groove 25 is to make erasing rubber 1 obtain a frictional force (for example 50gf) in erasing rubber holder 2, thereby makes erasing rubber 1 be not easy to fall down from erasing rubber holder 2.Described protrusion muscle groove 25 all can be seen in common propelling pencil, also repeats no more at this.

In addition, see also Fig. 2 (a) again, on erasing rubber holder 2, be provided with an erasing rubber holder step 23, the height of described erasing rubber holder step 23 is preferably identical with the height of described erasing rubber step 13, but height value less (such as 0.3 millimeter), thereby as long as with the fixing erasing rubber 1 of first cylinder 11 that erasing rubber 1 is manual can to block erasing rubber 1 when inserting erasing rubber holder 2.Described erasing rubber holder step 23 is preferably disposed on the position that the exposed length that makes erasing rubber 1 approximates the length of second cylinder 12, and erasing rubber 1 can obtain utilizing more fully like this.

Fig. 3 (a) shows the preferred embodiment that described erasing rubber 1 uses in propelling pencil.In erasing rubber operational phase 1 first time, one end of described first cylinder 11 is exposed to outside the described erasing rubber holder 2, be used for wiping, the remainder of described erasing rubber first cylinder 11 is then imbedded in the first interior circular hole 21 that is fixed on described erasing rubber holder.Described second cylinder 12 is positioned at second circular hole 22 of erasing rubber holder 2.The length that described first cylinder 11 is imbedded described erasing rubber holder 2 is that (for example exposed length is 4.5 millimeters for 1.5 times of length of the described first cylinder expose portion approximately, embedment length is 6.5 millimeters), purpose is that erasing rubber is difficult in use because of excessive the coming off of exerting oneself.When the part outside first cylinder 11 is exposed on is used up soon, notes keeping one section and do not use (such as keeping 1 millimeter) that available like this hand takes out erasing rubber.Enter operational phase for the second time afterwards, erasing rubber 1 is taken out tune, make second cylinder 12 upwards and be exposed to outside the erasing rubber holder 2.The residual fraction of first cylinder 11 still is positioned in the first interior circular hole 21, and this moment, form was shown in Fig. 3 (b).Use by the two ends of erasing rubber 1 thus, prolonged the service life of erasing rubber 1.

Below only be to be described in conjunction with a preferred embodiment of the present utility model, those skilled in the art that can make the variation of all equivalences on this basis.For example, the shape so as to the column of the erasing rubber 1 described in this specification is the typical cylinder bodily form, other shapes such as still, the cross section of the column of described erasing rubber 1 also can be triangular in shape, quadrangle, pentagon, hexagon.Correspondingly, the interior circular hole of described erasing rubber holder 2 also can be other shape, and for example, other shapes such as triangle, quadrangle, pentagon, hexagon are with corresponding with the shape of cross section of the column of erasing rubber 1.Increased by one times so-called service life in this specification, be meant that one section less erasing rubber of diameter is for the bigger one section erasing rubber of diameter, if the erasing rubber length than minor diameter is longer, service life even can be described as 2 times and even 3 times etc., but when using for the second time, erasing rubber exposes can be very long, drops easily during use.Therefore, protection domain of the present utility model is only limited by appended claims.

Claims

1. propelling pencil erasing rubber, it comprises: one first column, it is characterized in that described erasing rubber also comprises one along axially extended second column of described first cylinder, the diameter of described second column is less than the diameter of described first column.

2. propelling pencil erasing rubber as claimed in claim 1 is characterized in that, the length of described first column is 3 to 4 times of length of described second column.

3. propelling pencil erasing rubber as claimed in claim 1 is characterized in that, is formed with a step between described first column and described second column.

4. propelling pencil erasing rubber as claimed in claim 1 is characterized in that, described first column and described second column are cylinder.

5. propelling pencil erasing rubber as claimed in claim 1 is characterized in that, the cross section of described first column and described second column is quadrangle.

6. propelling pencil erasing rubber holder, described erasing rubber holder is a pipe fitting and has first endoporus that is used for holding first column of erasing rubber, it is characterized in that, described erasing rubber holder also has second endoporus that is used for holding second column of described erasing rubber, and the diameter of described first endoporus is greater than the diameter of described second endoporus.

7. propelling pencil erasing rubber holder as claimed in claim 6 is characterized in that, is formed with an erasing rubber holder step between described first endoporus and one second endoporus, to block first column of described erasing rubber.

8. propelling pencil erasing rubber holder as claimed in claim 6, it is characterized in that described erasing rubber holder step is arranged on and makes described erasing rubber first column expose the position that length outside the described erasing rubber holder equals the length of described erasing rubber second column.

9. propelling pencil erasing rubber holder as claimed in claim 6 is characterized in that, described first endoporus and described second endoporus are circular hole.