JP2007283739A - Shouldered joint pencil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To use up a pencil to the fullest without wasting it which is once discarded when shortened by use, by securing a sufficient length of the pencil by surely fitting the shortened pencils with each other in a straight line without any step, with no sense of incompatibility, allowing everyone to normally use up the pencil to the fullest by jointing the shortened pencils together, resulting in a wide-spread idea of preventing the waste of resources among consumers and manufacturers. <P>SOLUTION: A shouldered conical recessed shape is formed in a pencil base part during the manufacturing step of the pencil, and the pencil tip end shape in use is cut into a shouldered conical protruded shape to be fitted into the conical recessed shape, to joint the shortened pencils in use together. The shouldered joint pencil is delivered with a butt end protective member enveloping an adhesive agent stuck at the butt end part of the shouldered conical recessed shape, allowing a user to easily connect shortened pencils together. A cutter shown in Fig. 5 is used to more easily cut the pencil tip end shape into the shouldered conical protruded shape. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a shoulder joint pencil.

Various methods have been patented and utility models registered, such as pinching pencils that have been shortened so that they can be used without waste, or joining them together to ensure the required length. I have never seen a line in the stationery store. This is due to the unskilled patents and ideas that have been issued so far. There is no or low eco-consciousness.
The conventional pencil to connect
Japanese Patent Laid-Open No. 2003-112494 is designed to connect a pencil by a cone-shaped male and female, but there is an excavator for processing a dedicated cone-shaped female by a user when connecting without connecting a female at the manufacturing stage. It is necessary and has become a drag on the spread. Also, the difference from the present invention is that if it is a conical shape, a uniform depression is formed on the outer peripheral surface of the connecting portion as shown in FIG.

  The present invention makes it possible to use pencils that have been shortened and thrown away without waste by ensuring that the shortened pencils are fit comfortably and without a step on a straight line, ensuring the best pencil length. It becomes. The idea that all people use the pencil jointly and use it without waste is the norm. The idea of eliminating wasteful use of resources leads to making consumers and manufacturers well-known.

  In order to solve the above problems, the present invention forms a shoulder cone-shaped concave shape at the pencil base in the pencil manufacturing stage, and the pencil tip shape when used as a writing instrument so as to be fitted with the shoulder cone-shaped convex shape It is a pencil that can be used to joint short pencils that are cut in use, and the above-mentioned shoulder-shaped cone-shaped concave mouthpiece is attached with a mouthpiece protective material containing an adhesive and shipped, so that consumers can easily A shortened pencil can be connected. Further, the cutting tool for cutting the pencil tip shape into a convex shape with a shoulder cone is easier than processing the concave shape by an individual.

  The shoulder conical concave and shoulder conical convex joints of the present invention are the wisdom of woodworking techniques that have been practiced since ancient times. As you can see from the concave and convex shapes, there is always a horizontal shoulder at the mortise and at the base of the tenon. In general, what is important in mortise processing is the relationship between the mortise and tenon in the direction of the grain and the processing accuracy of the shoulder portion. If that portion is processed well, a strong and clean joint and joint can be made. Also, the length of the pencil is about 175 mm, but processing the conical concave shape with a shoulder at the manufacturing stage means that the core is cut short by 15-20 mm from the beginning to form a pencil shape. It can be sandwiched between timbers, reducing pencil manufacturing costs and resource saving.

The implementation of the present invention will be described. As shown in FIG. 1, at the pencil manufacturing stage, a conical concave mold with a shoulder is formed on the pencil base portion 002, and a lip protector containing an adhesive is attached 004 on the lip portion and manufactured and shipped. The original part of the conical concave mold 002 has a diameter of 6 mm and is used by cutting the conical convex mold 003 with a shoulder when using a pencil. Since the diameter dimension of each facing surface of the hexagonal pencil is around 7 to 7.2 mm, the horizontal shoulder portion 101 is 0.5 to 0.6 mm in FIG.
As explained in the section of the effect of the invention, since the important parts of the tenon are the original part of the tenon and the shoulder part, the shoulder cone-shaped concave mold 002 is fitted with a shoulder cone that fits about 6 mm from the shoulder part. The shape and size may be the same as the shape convex mold 003, and it is not necessary to have the same shape and size up to the tip.
A pencil that has been cut many times while using a plurality of pencils is naturally shorter and difficult to use. FIG. 3 shows that the adhesive is obtained by pushing the shoulder cone-shaped convex mold 003 against the shoulder of the cone-shaped concave mold 002 of a short pencil and piercing the tip of the pencil with the mouthpiece protection material 004 containing the adhesive. When the shoulder portions of the conical concave mold 002 with the shoulder and the conical convex mold 003 with the shoulder are brought into close contact with each other by being applied to the tenon surface and further pushed into the mortar surface, there is a sense of unity without any sense of incongruity. You will hit a pencil on a book.

  Cutlery for Cutting a Conical Convex with a Shoulder with a Manual Pencil Sharpener In FIG. 5, the edge of the side surface of the blade edge is set at an arbitrary angle.

  A scribing blade is attached in order to better process the shoulder part of the convex cone shape with a manual pencil sharpener.

FIG. 5 is a side perspective view of a pencil having a conical concave shape with a shoulder and a protective material containing an adhesive contained in a mouthpiece attached thereto. It is the front enlarged view which described the dimension of the conical concave shape processing with a shoulder. It is side perspective drawing showing the connection state of the shortened pencil. It is side expansion of a cone-shaped convex shape with a shoulder. Front view of the edge of a blade for machining a conical convex shape with a shoulder The pencil sharpener which attached the blade which processes a cone-shaped convex shape with a shoulder, and the blade for scribing, a front view.

Explanation of symbols

001 Hexagonal pencil body 002 Conical concave shape with shoulder 003 Conical convex shape with shoulder 004 Wrist protector containing adhesive 005 Adhesive applied 101 Tenon shoulder portion 102 Connected shoulder portion 103 With shoulder Blade for processing conical convex shape 104 Shoulder blade for scribing shoulder shape of conical convex shape with shoulder

Claims (4)

  At the pencil manufacturing stage, a concave cone shape with a shoulder is formed at the base of the pencil, and the pencil tip shape at the time of use as a writing instrument is cut into a convex shape with a shoulder cone so that it fits with it. A pencil that can be joined.   A jointable pencil having the function of [Claim 1], in which a mouthpiece protective material containing an adhesive is attached to the shoulder-shaped conical concave mouthpiece.   A cutting tool that cuts the shape of a pencil tip into a convex shape with a shoulder cone.   A pencil sharpener equipped with a cutter that cuts the pencil tip into a convex shape with a shoulder cone and a scribing blade.

Images