JP2013095099A - Simple writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple writing instrument easy to be manufactured and having rigidity of a holder and retention force of a pencil lead which are sustainable against writing pressure, although it is a simple writing instrument constituted of a pencil lead and the holder made of paper.SOLUTION: Folding lines 11a are provided at a nearly center part in the width direction of the holder 11 made of paper material along the longitudinal direction to form right/left side walls 15, and oblique folding lines 11b from a front end edge of the side walls 15 to the side end edges to form right/left folding corners 16. A pen body 12 is mounted to the nearly center part in the width direction of the holder 11 to be able to write. When the right/left folding corners 16 are folded, and when the right/left side walls 15 are bent along the folding lines 11a, the right/left side walls 15 hold the pen body, the front end edges 16a of the folding corners 16 are made to be along the longitudinal direction of the holder 11 and contact an upper part of the pen body 12.

Description

  The present invention relates to a disposable disposable writing instrument made of paper used for a mark sheet or the like.

  As this type of simple writing instrument, for example, there are proposals disclosed in Patent Document 1 and Patent Document 2. These are intended to ensure a writable form and rigidity by forming a holder part with a sheet body provided with a fold line and bending the holder part with the fold line when used as a writing instrument.

  Further, the inventor of the present application has previously made a proposal disclosed in Patent Document 3 as a writing instrument that can be written by bending the holder portion. This is made of a substantially strip-shaped thin plate material, and is provided with a fold line along the longitudinal direction substantially at the center in the width direction and between one end edge on the short side and the end on the long side between the fold line and the long side edge. A holder part which forms a folding corner by providing a bend line in an oblique direction across the edge, and a pen main body disposed along the lateral direction at an edge on the short side of the folding corner, When the folding corner is folded inward and the holder portion is folded along a folding line, the writing portion of the pen body protrudes into a writable state.

Japanese Utility Model Publication No. 61-122880 Japanese Utility Model Publication No. 62-11689 Japanese Patent No. 4755317

  However, in the case of Patent Documents 1 and 2 among the above-mentioned conventional proposals, there is a problem in the rigidity of the holder portion because the sheet body is simply bent and made into a U-shape or V-shape in cross-sectional view. Similarly, since the pen body is simply fixed to the holder portion, there is a problem that it is difficult to secure a holding force sufficient to withstand the writing pressure.

  Further, in the case of Patent Document 3 filed earlier by the inventor of the present application, a folding corner is formed on the front side of the holder part, and the folding part is folded inward to give the holder part enough rigidity to withstand writing pressure. It was successful. However, when this is applied to a disposable simple pencil consisting of a pencil lead and a paper holder, it is difficult to fix the pencil lead along the front edge in the manufacturing process, and it can only withstand the pen pressure. The problem remained in securing the holding power of the pencil lead.

  The present invention has been made to solve the problems of the conventional simple writing instrument, and its purpose is a holder that can withstand writing pressure while being a simple writing instrument composed of a pencil lead and a paper holder. An object of the present invention is to provide a simple writing instrument that is easy to manufacture while ensuring the rigidity of the portion and the holding force of the pencil lead.

  In order to achieve such an object, the simple writing instrument of the present invention is made of a substantially strip-shaped paper material, and is provided with a fold line along the longitudinal direction at the substantially center in the width direction to form left and right side walls and the fold line and the longitudinal direction. A holder part in which an oblique fold line is provided from the front edge on the short side to the edge on the long side between the side edge and a corner part is formed on the left and right sides, and the width direction of the holder part is substantially at the center. A pen body that is attached so that the tip part can be writable in a writable manner, and when the left and right folding corners are folded and the left and right side walls are folded at a fold line, the left and right side walls It is characterized in that the front end edge of the folding corner portion is in a state along the longitudinal direction of the holder portion and abuts against the upper portion of the pen body to hold it in a writable state.

  By taking such a configuration, the simple writing instrument of the present invention has a shape in which the left and right folding corners are folded inward when in a writable state, so that the rigidity of the holder portion is high, and further, the left and right side walls are Since the pen body is sandwiched and the front edge of the folding corner portion supports the pen body from above, it has an advantage that the force for holding the pen body is high.

  Preferably, there are two fold lines provided along the longitudinal direction at substantially the center in the width direction of the holder part, and a bottom wall is formed between them.

  By adopting such a configuration, there is an advantage that the thickness in the width direction is increased and the grip becomes easier to grip when being folded, and the rigidity in the width direction is also increased.

  The pen body is preferably made of a pencil lead.

  By taking such a configuration, there is an advantage that the manufacturing cost is lowered.

  Alternatively, the pen body may be constituted by a pencil lead and a pen holder part that holds the pencil lead.

  With such a configuration, the diameter or size of the pen body can be changed by changing the thickness or shape of the pen holder portion, and there is an advantage that the degree of freedom increases in setting the width size of the holder portion.

  Note that the folding corner may be further extended from the front edge of the folding corner via a folding line, and the folding corner may be folded after the folding corner is folded.

  This configuration has the advantage that the attached pen body is held more firmly.

  The simple writing instrument according to the present invention is a simple writing instrument composed of a pencil lead and a paper holder part, but has the rigidity of the holder part capable of withstanding the pen pressure and the holding power of the pencil lead. It has the advantage that it is easy to manufacture.

In the first embodiment of the writing instrument of the present invention, (a) is a state where the holder portion is unfolded, (b) is a state where the folding corner portion is folded in the middle, and (c) is a final form folded so as to be writable. It is a perspective view shown. 2A is a side view, and FIG. 2B is a cross-sectional view taken along line AA in FIG. The modification 1 of 1st Embodiment is shown, (a) is a principal part expansion perspective view, (b) is sectional drawing in the position equivalent to the AA line of Fig.2 (a). The modification 2 is shown, (a) is a top view which shows the unfolded state, (b) is a side view which shows the final form folded so that writing was possible. The modification 3 is shown, (a) is a top view which shows the unfolded state, (b) is a side view which shows the final form folded so that writing was possible. In 2nd Embodiment of the writing instrument of this invention, (a) is a top view which shows the unfolded state, (b) is the state which folded the folding corner part and folded the folding corner part of the 1st step in a folding process. It is a perspective view shown. (A) is a side view showing the final form folded so as to be writable, (b) is a sectional view taken along line BB in (a), and (c) is a sectional view taken along line CC in (a). . FIG. 9 shows a modification of the second embodiment, and is a cross-sectional view at a position corresponding to the line CC in FIG. 6 (a).

  Hereinafter, although the 1st Embodiment of the writing instrument concerning this invention is described based on FIG. 1 thru | or 2, it is not limited to this.

<< First Embodiment >>
In the figure, the writing instrument 10 of the present invention comprises a holder portion 11 and a pen body 12.
For the sake of convenience, the side where the pen body 12 is provided in the longitudinal direction of the holder portion 11 is defined as the front or front, and the left and right are left and right when viewed from the front.

  The holder unit 11 of the writing instrument 10 is made of hard paper and has a rectangular shape in plan view. The type of hard paper is not particularly limited, but it is desirable that the thickness is 0.5 mm or more in consideration of the strength that can withstand the writing pressure during writing.

  The holder portion 11 is provided with two parallel fold lines 11a and 11a along the longitudinal direction at substantially the center in the short direction, thereby forming a bottom wall 14 and left and right side walls 15 and 15. . Also, the two left and right folding lines 11b having an angle of 45 degrees (relative to the front edge) from the position outside the folding lines 11a and 11a of the short-side front edge to the respective longitudinal outer edges. 11b is provided, thereby forming left and right folding corners 16 and 16, respectively.

  The pen body 12 is made of a general pencil lead alone.

  The pen body 12 is attached to a substantially central portion of the bottom wall 14 in such a manner that the tip protrudes from the front end edge of the bottom wall 14 by a length that can be written, along the longitudinal direction. The attachment method is not particularly limited, and fixing with an adhesive may be used, or sticking with an adhesive tape or the like may be used.

  The writing instrument 10 having such a configuration is assembled as follows.

  First, the pen main body 12 is fixed to the center of the bottom wall 14 of the holder portion 11 by any one of the attachment methods described above. In addition, since it is assumed that the present invention is mainly used as a disposable simple writing instrument for a mark sheet, it is desirable to sharpen the tip of the pen body 12 in advance so that writing can be performed immediately.

  Next, the left and right folding corners 16 and 16 formed in the holder part 11 are folded inward at the positions of the folding lines 11b and 11b, respectively, to obtain the state shown in FIG.

  Since the folding line has an angle of 45 degrees, the front end edges 16a and 16a of the folded corner portions 16 and 16 are reversed and moved to both sides of the pen body 12 to be in a state along the longitudinal direction.

  Finally, the holder part 11 is bent at the positions of the folding lines 11a and 11a provided along the longitudinal direction, and the side walls 15 and 15 are raised.

  As a result, the flat thin plate-shaped holder portion 11 is changed to a substantially U-shape when viewed from the front, and rigidity sufficient to withstand the writing pressure is ensured. The pen body 12 is firmly held by the front end edges 16a and 16a of the folding corners 16 and 16 that are sandwiched between the side walls 15 and 15 and are in contact with the upper part.

  In the present invention, it is assumed that the holder 11 is bent and can be written on the market. In order to maintain the writable state, left and right side walls of the holder 11 are assumed. It is desirable to bond and fix the inner walls of 15 and 15 together. In addition, the folding corner 16 may be bonded and fixed to the side wall 15.

  In addition, it is not in a writable state, but one stage before that, that is, the folding corners 16 and 16 are folded, and the side walls 15 and 15 are left unfolded. It may be bent. By keeping such a state, when the advertising is printed on the left and right side walls 15 and 15 and distributed as novelty goods, the printed surface looks good, and the printed surface can be seen even when folded. There is an effect.

  Furthermore, it is possible to form a locking piece by providing notches in the left and right side walls 15 and 15 instead of bonding, and to maintain the bent state by engaging these, and by stapling. There may be.

  When the pen body 12 is attached, for example, when an adhesive is used, when the adhesive is not completely solidified, if the folding corners 16 and 16 are folded and the side walls 15 and 15 are folded, the state of the pen body 12 is dried. Since the pen main body 12 is pushed and moved, it can be easily attached to a predetermined position (the center of the bottom wall 14) without the need for precise alignment.

  Alternatively, the pen body 12 coated with an adhesive may be inserted after the holder portion 11 is folded in a writable state.

  According to the present invention, the holder body 11 is folded so that the pen body 12 is surrounded by the left and right side walls 15 and 15 and the folding corner front end edges 16a and 16a and the bottom wall 14 in this way. Easy and reliable installation of the pen body is possible. This is also a great advantage of the present invention.

  In addition, although the dimension of each site | part is appropriate, for example, the length of the width direction of the bottom wall 14 is set to the extent which is slightly less than 2 mm when the diameter dimension of the pen main body 12 is 2 mm. And the side wall 15 * 15 raised when holding the holder part 11 pinches | interposes the pen main body 12 strongly, and the advantage that holding force increases arises.

  In addition, it is not preferable to take a large size in the width direction of the side walls 15 and 15 (the height when the side wall 15 is bent and raised), considering that the index finger is attached to the upper edge when writing. Considering the fact that the strength decreases and the grip becomes difficult, it can be said that 8 to 16 mm is preferable. The side walls 15 and 15 may be embossed with grooves or ridges along the longitudinal direction. By doing so, there is an effect that rigidity is increased and it is not necessary to take a large width dimension.

  Further, the length of the holder part 11 is such that the rear end of the holder part 11 is preferably held between the index finger and the thumb when the holder part 11 in a writable state is gripped. In view of the above, it is preferable that the length is 100 mm or more.

FIGS. 3A and 3B show a first modification of the first embodiment, in which FIG. 3A is an enlarged perspective view of the main part, and FIG. 3B is a position corresponding to the line AA shown in FIG. It is sectional drawing.
Here, the pen body 13 is composed of a pencil lead 13a and a synthetic resin tube-shaped pen holder part 13b for holding the pencil lead 13a, and the pencil lead 13a is fixed by being fitted into the pen holder part 13b at the rear end. ing. By adopting such a configuration, even if the width of the bottom wall 14 is increased, the thickness of the pen holder portion 13b can be increased or the shape can be changed to be wider so that the bottom wall 14 can be sandwiched between the side walls 15 and 15. It becomes possible to have a width dimension, and the advantage that the freedom degree of the setting of the width dimension of the bottom wall 14 increases arises.

  FIGS. 4 to 5 show Modification 2 and Modification 3 of the first embodiment, respectively, (a) is a plan view of a state in which the holder portion is expanded, and (b) is a side view of a state where writing is possible. FIG.

  4, the angle between the front edge 17a and the side edge 17b is set to an obtuse angle, as shown in the plan view of FIG. 4A. As shown in the side view, the spread angle of the tip of the folding corner can be made smaller than 45 degrees.

  As shown in the plan view of FIG. 5, the folding corner 18 in FIG. 5 has an acute angle between the front edge 18a and the side edge 18b, and when folded into a writable state (b) As shown in the side view, the spread angle of the tip of the folding corner can be made larger than 45 degrees.

  Thus, in the present invention, the spread angle of the writing instrument tip can be freely set by changing the angle formed between the front edge and the side edge of the folding corner. In order to set the spread angle, in addition to changing the angle formed by the front edge and the side edge, for example, the front edge may not be a straight line but may be a bent line whose angle is changed in the middle.

<< Second Embodiment >>
FIGS. 6 to 7 show a second embodiment of the writing instrument according to the present invention. FIG. 6A is a plan view showing a state in which the holder portion is expanded, and FIG. 6B is a first view of the folding process. The perspective view which shows the state by which the folding corner | angular part was folded as a step. (A) of FIG. 7 is a side view showing a writable state, (b) is a cross-sectional view taken along line BB in (a), and (c) is a cross-sectional view taken along line CC in (a). In addition, since 1st Embodiment and 2nd Embodiment are the same as a basic structure, the same code | symbol is attached | subjected to the same location, description is abbreviate | omitted, and only a different location is demonstrated.

  In the writing instrument 20 according to the second embodiment, as shown in FIG. 6A, the folding corners 27 and 27 are further connected to the holder corners 26 through the folding lines 26a and 26a from the folding corners 26 and 26 of the holder unit 21, respectively. Reinforcing walls 28 are respectively extended from one side wall 15 of 21 via a second folding line 21a, and the folding corners 26 and 26 are folded in the first stage of the folding process as shown in FIG. 6 (b). After that, the folded corner portions 27 and 27 are folded outward, and the side walls 15 and 15 are folded along the left and right folding lines 11a and 11a as shown in FIG. 7C, and then the reinforcing wall 28 is folded along the second folding line 21a. The inner side wall 15 is opposed to the right side wall in FIG. 6C.

  By taking such a configuration, the rigidity of the holder part and the holding force of the pen body 12 can be further increased.

  Here, the folding corners 27 and 27 are approximately half the size of the folding corners 26 and 26, but may be substantially the same shape. It can be further increased.

  FIG. 8 shows a modification of the second embodiment, in which the first reinforcing wall 30 extends from the left side wall 15 and the second reinforcing wall 31 also extends from the right side wall 15 via the top wall 24. Is extended. Then, the second reinforcing wall 31 and the left side wall 15 are overlapped and bonded, and the first reinforcing wall 30 is folded so as to be obliquely inside. In the present modified example, by adopting a configuration in which such crossing is provided, rigidity that can withstand writing pressure is ensured while having a cylindrical shape having the bottom wall 14 and the top wall 24. In addition, in this modified example, since the top wall 24 is formed, there is an advantage that it is easy to grip when writing.

  As described above, according to the present invention, the rigidity of the holder portion and the holding force of the pen body can be increased, and the manufacturing can be easily performed.

  Note that the holder portion is not limited to a rectangular shape in plan view, and for example, the holder portion may have a rounded corner at the rear end or a gently curved shape at the side edge.

11, 21 Holder part 12, 13 Pen body 14 Bottom wall 15 Side wall 16 Folding corner part 27 Folding corner part

  The present invention relates to a disposable disposable writing instrument made of paper used for a mark sheet or the like.

  As this type of simple writing instrument, for example, there are proposals disclosed in Patent Document 1 and Patent Document 2. These are intended to ensure a writable form and rigidity by forming a holder part with a sheet body provided with a fold line and bending the holder part with the fold line when used as a writing instrument.

  Further, the inventor of the present application has previously made a proposal disclosed in Patent Document 3 as a writing instrument that can be written by bending the holder portion. This is made of a substantially strip-shaped thin plate material, and is provided with a fold line along the longitudinal direction substantially at the center in the width direction and between one end edge on the short side and the end on the long side between the fold line and the long side edge. A holder part which forms a folding corner by providing a bend line in an oblique direction across the edge, and a pen main body disposed along the lateral direction at an edge on the short side of the folding corner, When the folding corner is folded inward and the holder portion is folded along a folding line, the writing portion of the pen body protrudes into a writable state.

Japanese Utility Model Publication No. 61-122880 Japanese Utility Model Publication No. 62-11689 Japanese Patent No. 4755317

  However, in the case of Patent Documents 1 and 2 among the above-mentioned conventional proposals, there is a problem in the rigidity of the holder portion because the sheet body is simply bent and made into a U-shape or V-shape in cross-sectional view. Similarly, since the pen body is simply fixed to the holder portion, there is a problem that it is difficult to secure a holding force sufficient to withstand the writing pressure.

  Further, in the case of Patent Document 3 filed earlier by the inventor of the present application, a folding corner is formed on the front side of the holder part, and the folding part is folded inward to give the holder part enough rigidity to withstand writing pressure. It was successful. However, when this is applied to a disposable simple pencil consisting of a pencil lead and a paper holder, it is difficult to fix the pencil lead along the front edge in the manufacturing process, and it can only withstand the pen pressure. The problem remained in securing the holding power of the pencil lead.

  The present invention has been made to solve the problems of the conventional simple writing instrument, and its purpose is a holder that can withstand writing pressure while being a simple writing instrument composed of a pencil lead and a paper holder. An object of the present invention is to provide a simple writing instrument that is easy to manufacture while ensuring the rigidity of the portion and the holding force of the pencil lead.

In order to achieve such an object, the simple writing instrument of the present invention is made of a substantially strip-shaped paper material, and is provided with a fold line along the longitudinal direction substantially at the center in the width direction to form left and right side walls, and the fold line and A folding line is formed between the front edge of the short side and the end edge of the long side obliquely between the long side edge and the half line of the angle formed by the folding line and the short side front edge. The left and right folding angles, comprising a holder portion provided with a folding corner portion on the left and right sides, and a pen body having a pencil core attached to the tip portion so as to be writable at a substantially central portion in the width direction of the holder portion. The left and right side walls sandwich the pen body, and the front edge of the folded corner is along the longitudinal direction of the holder part. Touch the top of the pen body It is characterized by supporting the the writable state by.

  By taking such a configuration, the simple writing instrument of the present invention has a shape in which the left and right folding corners are folded inward when in a writable state, so that the rigidity of the holder portion is high, and further, the left and right side walls are Since the pen body is sandwiched and the front edge of the folding corner portion supports the pen body from above, it has an advantage that the force for holding the pen body is high.

  Preferably, there are two fold lines provided along the longitudinal direction at substantially the center in the width direction of the holder part, and a bottom wall is formed between them.

  By adopting such a configuration, there is an advantage that the thickness in the width direction is increased and the grip becomes easier to grip when being folded, and the rigidity in the width direction is also increased.

  Alternatively, the pen body may be constituted by a pencil lead and a pen holder part that holds the pencil lead.

  With such a configuration, the diameter or size of the pen body can be changed by changing the thickness or shape of the pen holder portion, and there is an advantage that the degree of freedom increases in setting the width size of the holder portion.

  Note that the folding corner may be further extended from the front edge of the folding corner via a folding line, and the folding corner may be folded after the folding corner is folded.

  This configuration has the advantage that the attached pen body is held more firmly.

  The simple writing instrument according to the present invention is a simple writing instrument composed of a pencil lead and a paper holder part, but has the rigidity of the holder part capable of withstanding the pen pressure and the holding power of the pencil lead. It has the advantage that it is easy to manufacture.

In the first embodiment of the writing instrument of the present invention, (a) is a state where the holder portion is unfolded, (b) is a state where the folding corner portion is folded in the middle, and (c) is a final form folded so as to be writable. It is a perspective view shown. 2A is a side view, and FIG. 2B is a cross-sectional view taken along line AA in FIG. The modification 1 of 1st Embodiment is shown, (a) is a principal part expansion perspective view, (b) is sectional drawing in the position equivalent to the AA line of Fig.2 (a). The modification 2 is shown, (a) is a top view which shows the unfolded state, (b) is a side view which shows the final form folded so that writing was possible. The modification 3 is shown, (a) is a top view which shows the unfolded state, (b) is a side view which shows the final form folded so that writing was possible. In 2nd Embodiment of the writing instrument of this invention, (a) is a top view which shows the unfolded state, (b) is the state which folded the folding corner part and folded the folding corner part of the 1st step in a folding process. It is a perspective view shown. (A) is a side view showing the final form folded so as to be writable, (b) is a sectional view taken along line BB in (a), and (c) is a sectional view taken along line CC in (a). . FIG. 9 shows a modification of the second embodiment, and is a cross-sectional view at a position corresponding to the line CC in FIG. 6 (a).

  Hereinafter, although the 1st Embodiment of the writing instrument concerning this invention is described based on FIG. 1 thru | or 2, it is not limited to this.

<< First Embodiment >>
In the figure, the writing instrument 10 of the present invention comprises a holder portion 11 and a pen body 12.
For the sake of convenience, the side where the pen body 12 is provided in the longitudinal direction of the holder portion 11 is defined as the front or front, and the left and right are left and right when viewed from the front.

  The holder unit 11 of the writing instrument 10 is made of hard paper and has a rectangular shape in plan view. The type of hard paper is not particularly limited, but it is desirable that the thickness is 0.5 mm or more in consideration of the strength that can withstand the writing pressure during writing.

  The holder portion 11 is provided with two parallel fold lines 11a and 11a along the longitudinal direction at substantially the center in the short direction, thereby forming a bottom wall 14 and left and right side walls 15 and 15. . Also, the two left and right folding lines 11b having an angle of 45 degrees (relative to the front edge) from the position outside the folding lines 11a and 11a of the short-side front edge to the respective longitudinal outer edges. 11b is provided, thereby forming left and right folding corners 16 and 16, respectively.

  The pen body 12 is made of a general pencil lead alone.

  The pen body 12 is attached to a substantially central portion of the bottom wall 14 in such a manner that the tip protrudes from the front end edge of the bottom wall 14 by a length that can be written, along the longitudinal direction. The attachment method is not particularly limited, and fixing with an adhesive may be used, or sticking with an adhesive tape or the like may be used.

  The writing instrument 10 having such a configuration is assembled as follows.

  First, the pen main body 12 is fixed to the center of the bottom wall 14 of the holder portion 11 by any one of the attachment methods described above. In addition, since it is assumed that the present invention is mainly used as a disposable simple writing instrument for a mark sheet, it is desirable to sharpen the tip of the pen body 12 in advance so that writing can be performed immediately.

  Next, the left and right folding corners 16 and 16 formed in the holder part 11 are folded inward at the positions of the folding lines 11b and 11b, respectively, to obtain the state shown in FIG.

  Since the folding line has an angle of 45 degrees, the front end edges 16a and 16a of the folded corner portions 16 and 16 are reversed and moved to both sides of the pen body 12 to be in a state along the longitudinal direction.

  Finally, the holder part 11 is bent at the positions of the folding lines 11a and 11a provided along the longitudinal direction, and the side walls 15 and 15 are raised.

  As a result, the flat thin plate-shaped holder portion 11 is changed to a substantially U-shape when viewed from the front, and rigidity sufficient to withstand the writing pressure is ensured. The pen body 12 is firmly held by the front end edges 16a and 16a of the folding corners 16 and 16 that are sandwiched between the side walls 15 and 15 and are in contact with the upper part.

  In the present invention, it is assumed that the holder 11 is bent and can be written on the market. In order to maintain the writable state, left and right side walls of the holder 11 are assumed. It is desirable to bond and fix the inner walls of 15 and 15 together. In addition, the folding corner 16 may be bonded and fixed to the side wall 15.

  In addition, it is not in a writable state, but one stage before that, that is, the folding corners 16 and 16 are folded, and the side walls 15 and 15 are left unfolded. It may be bent. By keeping such a state, when the advertising is printed on the left and right side walls 15 and 15 and distributed as novelty goods, the printed surface looks good, and the printed surface can be seen even when folded. There is an effect.

  Furthermore, it is possible to form a locking piece by providing notches in the left and right side walls 15 and 15 instead of bonding, and to maintain the bent state by engaging these, and by stapling. There may be.

  When the pen body 12 is attached, for example, when an adhesive is used, when the adhesive is not completely solidified, if the folding corners 16 and 16 are folded and the side walls 15 and 15 are folded, the state of the pen body 12 is dried. Since the pen main body 12 is pushed and moved, it can be easily attached to a predetermined position (the center of the bottom wall 14) without the need for precise alignment.

  Alternatively, the pen body 12 coated with an adhesive may be inserted after the holder portion 11 is folded in a writable state.

  According to the present invention, the holder body 11 is folded so that the pen body 12 is surrounded by the left and right side walls 15 and 15 and the folding corner front end edges 16a and 16a and the bottom wall 14 in this way. Easy and reliable installation of the pen body is possible. This is also a great advantage of the present invention.

  In addition, although the dimension of each site | part is appropriate, for example, the length of the width direction of the bottom wall 14 is set to the extent which is slightly less than 2 mm when the diameter dimension of the pen main body 12 is 2 mm. And the side wall 15 * 15 raised when holding the holder part 11 pinches | interposes the pen main body 12 strongly, and the advantage that holding force increases arises.

  In addition, it is not preferable to take a large size in the width direction of the side walls 15 and 15 (the height when the side wall 15 is bent and raised), considering that the index finger is attached to the upper edge when writing. Considering the fact that the strength decreases and the grip becomes difficult, it can be said that 8 to 16 mm is preferable. The side walls 15 and 15 may be embossed with grooves or ridges along the longitudinal direction. By doing so, there is an effect that rigidity is increased and it is not necessary to take a large width dimension.

  Further, the length of the holder part 11 is such that the rear end of the holder part 11 is preferably held between the index finger and the thumb when the holder part 11 in a writable state is gripped. In view of the above, it is preferable that the length is 100 mm or more.

FIGS. 3A and 3B show a first modification of the first embodiment, in which FIG. 3A is an enlarged perspective view of the main part, and FIG. 3B is a position corresponding to the line AA shown in FIG. It is sectional drawing.
Here, the pen body 13 is composed of a pencil lead 13a and a synthetic resin tube-shaped pen holder part 13b for holding the pencil lead 13a, and the pencil lead 13a is fixed by being fitted into the pen holder part 13b at the rear end. ing. By adopting such a configuration, even if the width of the bottom wall 14 is increased, the thickness of the pen holder portion 13b can be increased or the shape can be changed to be wider so that the bottom wall 14 can be sandwiched between the side walls 15 and 15. It becomes possible to have a width dimension, and the advantage that the freedom degree of the setting of the width dimension of the bottom wall 14 increases arises.

  FIGS. 4 to 5 show Modification 2 and Modification 3 of the first embodiment, respectively, (a) is a plan view of a state in which the holder portion is expanded, and (b) is a side view of a state where writing is possible. FIG.

  4, the angle between the front edge 17a and the side edge 17b is set to an obtuse angle, as shown in the plan view of FIG. 4A. As shown in the side view, the spread angle of the tip of the folding corner can be made smaller than 45 degrees.

  As shown in the plan view of FIG. 5, the folding corner 18 in FIG. 5 has an acute angle between the front edge 18a and the side edge 18b, and when folded into a writable state (b) As shown in the side view, the spread angle of the tip of the folding corner can be made larger than 45 degrees.

  Thus, in the present invention, the spread angle of the writing instrument tip can be freely set by changing the angle formed between the front edge and the side edge of the folding corner. In order to set the spread angle, in addition to changing the angle formed by the front edge and the side edge, for example, the front edge may not be a straight line but may be a bent line whose angle is changed in the middle.

<< Second Embodiment >>
FIGS. 6 to 7 show a second embodiment of the writing instrument according to the present invention. FIG. 6A is a plan view showing a state in which the holder portion is expanded, and FIG. 6B is a first view of the folding process. The perspective view which shows the state by which the folding corner | angular part was folded as a step. (A) of FIG. 7 is a side view showing a writable state, (b) is a cross-sectional view taken along line BB in (a), and (c) is a cross-sectional view taken along line CC in (a). In addition, since 1st Embodiment and 2nd Embodiment are the same as a basic structure, the same code | symbol is attached | subjected to the same location, description is abbreviate | omitted, and only a different location is demonstrated.

  In the writing instrument 20 according to the second embodiment, as shown in FIG. 6A, the folding corners 27 and 27 are further connected to the holder corners 26 through the folding lines 26a and 26a from the folding corners 26 and 26 of the holder unit 21, respectively. Reinforcing walls 28 are respectively extended from one side wall 15 of 21 via a second folding line 21a, and the folding corners 26 and 26 are folded in the first stage of the folding process as shown in FIG. 6 (b). After that, the folded corner portions 27 and 27 are folded outward, and the side walls 15 and 15 are folded along the left and right folding lines 11a and 11a as shown in FIG. 7C, and then the reinforcing wall 28 is folded along the second folding line 21a. The inner side wall 15 is opposed to the right side wall in FIG. 6C.

  By taking such a configuration, the rigidity of the holder part and the holding force of the pen body 12 can be further increased.

  Here, the folding corners 27 and 27 are approximately half the size of the folding corners 26 and 26, but may be substantially the same shape. It can be further increased.

  FIG. 8 shows a modification of the second embodiment, in which the first reinforcing wall 30 extends from the left side wall 15 and the second reinforcing wall 31 also extends from the right side wall 15 via the top wall 24. Is extended. Then, the second reinforcing wall 31 and the left side wall 15 are overlapped and bonded, and the first reinforcing wall 30 is folded so as to be obliquely inside. In the present modified example, by adopting a configuration in which such crossing is provided, rigidity that can withstand writing pressure is ensured while having a cylindrical shape having the bottom wall 14 and the top wall 24. In addition, in this modified example, since the top wall 24 is formed, there is an advantage that it is easy to grip when writing.

  As described above, according to the present invention, the rigidity of the holder portion and the holding force of the pen body can be increased, and the manufacturing can be easily performed.

  Note that the holder portion is not limited to a rectangular shape in plan view, and for example, the holder portion may have a rounded corner at the rear end or a gently curved shape at the side edge.

11, 21 Holder part 12, 13 Pen body 14 Bottom wall 15 Side wall 16 Folding corner part 27 Folding corner part

Claims (5)

Made of a substantially strip-shaped paper material, a fold line is provided along the longitudinal direction at substantially the center in the width direction to form left and right side walls, and from the front edge on the short side between the fold line and the longitudinal side edge A holder part in which an oblique fold line is provided across the edge on the longitudinal side to form a folded corner part on the left and right, and a pen attached to the tip part of the holder part so as to be writable so as to be writable Consisting of the body,
When the left and right folding corners are folded and the left and right side walls are folded along a folding line, the left and right side walls sandwich the pen body, and the front edge of the folding corner is along the longitudinal direction of the holder part. A simple writing instrument characterized by being in contact with the upper part of the pen body and holding it in a writable state.   There are two fold lines provided along the longitudinal direction substantially at the center in the short direction of the holder portion, and a bottom wall along the longitudinal direction is formed at the center of the holder portion by the two fold lines. The simple writing instrument according to claim 1   The simple writing instrument according to claim 1 or 2, wherein the pen body is made of a pencil lead.   The simple writing instrument according to claim 1 or 2, wherein the pen body includes a pencil lead and a pen holder part for holding the pencil lead.   The folding corner portion is further extended from the front end edge of the folding corner portion via a folding line, and after folding the folding corner portion, the folding corner portion is further folded. 4. A simple writing instrument according to any one of the above.

Images