KR200232283Y1 - Replaceable stack type eraser - Google Patents

Abstract

The present invention relates to a multi-stage replaceable eraser, comprising a plurality of unit bodies and a lid in which a core material is embedded, and in particular, each of the male screws at the front and rear ends in order to use the unit bodies integrally or separately by combining them in the front and rear directions. A portion and a female screw portion were formed, and a predetermined hole was formed in the cap portion of the lid to add portability.

Description

Multistage replaceable eraser {REPLACEABLE STACK TYPE ERASER}

The present invention relates to a multi-stage replaceable eraser, in particular, the eraser is made of a small unit body is coupled to each other, coupled to each of the front and rear ends of the unit body by coupling, the combined unit body in the forward and backward direction connection It is related to a multi-stage replaceable eraser that can be integrated into one by one or used separately or separately.

Looking at the prior art replaceable eraser according to the present invention. According to Korean Patent Registration No. 219454, a plurality of rectangular support tubes with an eraser are arranged in a row in a large cylinder made of transparent material, and the tubes supporting the worn eraser when the eraser at the tip is worn out It is related to a continuous replacement eraser which removes from the end of a long cylinder and reinserts it into the bottom opening so that the next new eraser protrudes into the end of the cylinder and can be used again. Since the continuous replacement eraser is made to maintain the shape by the receiving cylinder, it cannot be separated and cannot be used individually. In addition, in using the eraser, if an excessively vertical force is applied, the eraser tube located at the rear end is retracted and the eraser is inserted into the cylinder.

The present invention is devised to solve the above problems, in order to combine the unit body by simply screwing to the front and rear ends of the unit body to be used integrally or separated to use individually, the next or the rear end Its purpose is to provide an easy-to-use eraser that can be easily used and replace the eraser and a lid to add convenience to carrying.

1 is a perspective view of a multi-stage replaceable eraser according to the present invention,

2 is an exploded perspective view of FIG. 1;

3 is a cross-sectional view of FIG.

4 is a cross-sectional view of the unit body

Explanation of symbols on the main parts of the drawings

1: multi-stage removable eraser 2: unit body

21: Male thread 22: Female thread

23: blocking portion 24: storage groove

25: space part 3: lid

31: fitting portion 32: cap portion

33: ring 34: hole

4: heartwood

In order to achieve the above object, the present invention is composed of a lid formed with a plurality of unit body and a fixing ring portion inserted so that the core material of the eraser is exposed in one direction, by sequentially replacing the unit body in the front and rear direction mutually In the eraser which can be used, the front end of the unit body is formed with a male thread, the rear end of the unit body is formed with a female screw, the plurality of unit bodies (2) are screwed in the front and rear direction and assembled to a predetermined length The present invention relates to a multi-stage replaceable eraser characterized in that a single hole is formed for the purpose of preventing suffocation and necklace connection in the cap portion of the lid.

Referring to the configuration of the present invention in detail with the accompanying drawings as follows.

1 shows a perspective view of a multi-stage replaceable eraser 1 according to the present invention, wherein a plurality of unit bodies 2 into which the core material 4 is inserted are continuously screwed in the longitudinal direction, respectively, and located at the rear end. The lid 3 is inserted into an end of the unit body 2 to form an eraser, and the unit body 2 may be combined to adjust the length of the eraser as desired by the user. The material of the body constituting the eraser is a plastic material, the appearance is produced by injection, and the appearance is further enhanced by adding a transparent color to the plastic. As shown, when the eraser is used, the lid 3 is fitted to the outside of the unit body 2 located at the rear end of the eraser formed by being stacked in multiple stages, and the lid 3 is stored when stored. It is inserted and stored in the core material (4) direction of the unit body (2) located in the front end of the eraser formed by coupling to be stacked in multiple stages.

Figure 2 shows an exploded perspective view of a multi-stage replaceable eraser 1 according to the present invention, the five body unit 2 is fitted to each other the core 4 is fitted to have a predetermined length. Here, the unit body 2 is not limited only to using a standardized eraser, and in order to use the multi-stage replaceable eraser 1 for various purposes, the unit body 2 or the five different in length is somewhat different. It is also possible to combine or use the following unit body (2) individually, and to create a writing means suitable for the intended use, that is, crayons, crayons, pastels and the like formed on the front end of the unit body (2) After inserting into the receiving groove 24 according to Figure 4 may be used in combination with each other. According to the drawing, the unit body 2 has a cylindrical shape, and the front end of the unit body 2 forms a step with a diameter smaller than the outer diameter of the unit body 2, and on its outer peripheral surface a male screw portion ( 21) is formed. In addition, the rear end of the unit body (2) is formed with a female screw portion 22 on the inner surface, the space portion 25 shown in Figure 4 is formed so that the core material (4) is stored. The known lid 3 is fitted through the fitting portion 31 at the end of the unit body 2 positioned at the rear end of the eraser according to the present invention, and has a predetermined hole 34 in the center of the cap portion 32. When the child swallows the lid (3) is formed to prevent asphyxiation accident by the hole 34, it is possible to use a convenient means to connect and carry a material such as a necklace strap. On the other hand, the ring portion 33 is formed on the outer circumferential surface of the lid 3 to secure the eraser on the back of the pocket or diary pen provided on the top.

3 is a cross-sectional view of the multi-stage replaceable eraser 1 according to the present invention, and each of the unit bodies 2 is sequentially stacked including the core 4. As shown in FIG. 4, a cross section of the unit body 2 forms a cylinder below the outer diameter of the body, and a male screw portion 21 having a predetermined pitch is formed on the outer circumferential surface of the lower cylinder. A female screw portion 22 having the same pitch as the male screw 21 is formed on the upper inner surface of the unit body 2 so as to be coupled to the male screw portion 21. In addition, the receiving groove 24 is formed to a predetermined depth and diameter so that the core 4 is inserted, the core 4 is not retracted more than the predetermined depth, the rear of the unit body (2) The blocking portion 23 is used to distinguish the core 4 of the unit body 2 and the core 4 of the unit body 2 located in the front end portion, which are sequentially coupled to the space 25 formed inside the end. Put it. In using the illustrated eraser, when the core material 4 of the unit body 2 located in the front end portion is consumed and needs replacement, the unit body 2 located in the second stage is gripped and the unit body of the front end portion ( 2) Rotate to disassemble the screw, and the unit body (2) is coupled to the rear end and the second unit body (2) is used to position the front end.

Meanwhile, in the above description, the core material 4 is limited to the eraser. However, the core material 4 is not limited thereto and may be used in various ways such as a phrase, a crater, or chalk.

As described above, in the present invention, in the eraser coupled in multiple stages, the core member can be inserted into and removed from the front end portion of the unit body, and the screw portion for mutual coupling is formed at the front and rear ends of the unit body to be replaced in the front and rear directions. By making it possible to achieve a solid eraser without storing in the tube as in the prior art, it is possible to easily replace the unit body by a simple operation, by forming a predetermined hole in the center of the cap portion of the lid to combine a convenient means for carrying I could do it.

Claims (2)

Eraser core 4 is composed of a lid (3) formed with a plurality of unit body 2 and the fixing ring portion 33 is inserted so as to be exposed in one direction, by combining the unit body (2) in the front and rear direction In the eraser can be used in sequence, The front end of the unit body 2 has a male screw portion 21 is formed, The rear end of the unit body 2 has a female screw portion 22 is formed, Multi-stage replaceable eraser, characterized in that the plurality of unit body (2) is screwed in the front and rear direction and assembled to a predetermined length to be used integrally or separately to be used individually. The method of claim 1, Multi-stage replaceable eraser, characterized in that a predetermined hole (34) is formed in the cap portion (32) of the lid (3) for the purpose of preventing suffocation and installing a necklace.