JP2020049953A - Writing instrument with erasing tool - Google Patents

Writing instrument with erasing tool Download PDF

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JP2020049953A
JP2020049953A JP2020001024A JP2020001024A JP2020049953A JP 2020049953 A JP2020049953 A JP 2020049953A JP 2020001024 A JP2020001024 A JP 2020001024A JP 2020001024 A JP2020001024 A JP 2020001024A JP 2020049953 A JP2020049953 A JP 2020049953A
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erasing
writing
handwriting
eraser
thermochromic ink
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JP6974509B2 (en
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栄 早尾
Sakae Hayao
栄 早尾
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Mitsubishi Pencil Co Ltd
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Mitsubishi Pencil Co Ltd
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Abstract

To provide a writing instrument provided with an erasing tool capable of erasing a handwriting, regardless of the type of ink or a core of the writing instrument, even if it is handwriting of thermochromic ink or handwriting of a pencil core.SOLUTION: A writing instrument including an erasing tool has a first erasing member for erasing a handwriting made of the thermochromic ink, and a second erasing member for erasing a handwriting of a type different from the thermochromic ink. The first erasing member and the second erasing member are housed in a barrel.SELECTED DRAWING: Figure 1

Description

本発明は、ボールペン、マーキングペン、万年筆、鉛筆、色鉛筆、熱変色インク等で筆記した筆記描線を消去することができる消去具を備えた筆記具に関する。   The present invention relates to a writing implement provided with an erasing implement capable of erasing a writing line written with a ball-point pen, a marking pen, a fountain pen, a pencil, a colored pencil, a thermochromic ink, or the like.

従来、市販の消しゴムにより筆跡を消去することができる消去具が多く開示されている。しかしながら、市販の消しゴムを、摩擦熱により筆跡を消去する消去具として用いる場合には、筆跡を効率よく消去することができない。そこで、特許文献１のような消去部に弾性を有する合成樹脂とした摩擦体が開示されている。しかし、特許文献１の摩擦体では、熱変色性インクの筆跡を消去することは容易でも、従来の鉛筆芯や消しゴム消去性のインク等の筆跡を消去することが困難である。   Conventionally, many erasing tools capable of erasing handwriting with a commercially available eraser have been disclosed. However, when a commercially available eraser is used as an eraser for erasing handwriting by frictional heat, handwriting cannot be efficiently erased. Therefore, a friction body made of a synthetic resin having elasticity in an erasing portion as disclosed in Patent Document 1 is disclosed. However, in the friction body of Patent Document 1, it is easy to erase the handwriting of the thermochromic ink, but it is difficult to erase the handwriting of the conventional pencil lead or eraser ink.

特開２００９−１０７２４０号公報JP 2009-107240 A

そこで、熱変色インクの筆跡でも鉛筆芯の筆跡でも、筆記具のインクや芯の種類によらず、筆跡を消去可能な消去具を備えた筆記具を提供することを課題とする。   Therefore, an object of the present invention is to provide a writing implement provided with an erasing tool capable of erasing a handwriting, regardless of the type of ink or the core of the writing tool, regardless of the handwriting of the thermochromic ink or the handwriting of a pencil lead.

本発明の一態様によれば、熱変色インクによる筆跡を消去するための第１の消去部材と、熱変色インクとは異なる種類の筆跡を消去するための第２の消去部材と、を有することを特徴とする消去具を備えた筆記具が提供される。なお、ここで挙げる筆跡の消去とは、熱変色インクにおける消色並びに変色も含まれる。   According to one aspect of the present invention, it has a first erasing member for erasing a handwriting by the thermochromic ink, and a second erasing member for erasing a handwriting of a type different from the thermochromic ink. A writing implement provided with an erasing implement characterized by the following. Note that the erasure of the handwriting mentioned here includes decolorization and discoloration of the thermochromic ink.

また、本発明の別の態様によれば、第１の消去部材と第２の消去部材とが軸筒内に収容されていることを特徴とする筆記具が提供される。   Further, according to another aspect of the present invention, there is provided a writing instrument, wherein the first erasing member and the second erasing member are housed in the barrel.

また、本発明の別の態様によれば、第１の消去部材と第２の消去部材とが一体で構成されていることを特徴とする筆記具が提供される。   According to another aspect of the present invention, there is provided a writing instrument, wherein the first erasing member and the second erasing member are integrally formed.

また、本発明の別の態様によれば、第１の消去部材のデュロメータ硬度と第２の消去部材のデュロメータ硬度とが、異なることを特徴とする筆記具が提供される。   According to another aspect of the present invention, there is provided a writing implement, wherein the durometer hardness of the first erasing member and the durometer hardness of the second erasing member are different.

本発明によれば、熱変色インクの筆跡でも鉛筆芯の筆跡でも、筆記具のインクや芯の種類によらず、筆跡を消去可能な消去具を備えた筆記具を提供することができる。すなわち、複数のインク又は芯を収容した様々な筆記具による筆跡を消去することができる。   According to the present invention, it is possible to provide a writing implement provided with an erasing tool capable of erasing a handwriting regardless of the type of ink or the core of the writing implement, whether it is handwriting of thermochromic ink or handwriting of a pencil lead. In other words, handwriting by various writing tools containing a plurality of inks or cores can be erased.

本発明における第１例の消去具を備えた筆記具の縦断面図である。It is a longitudinal section of a writing implement provided with the eraser of the 1st example in the present invention. 本発明における第２例の消去具を備えた筆記具の縦断面図である。It is a longitudinal section of the writing implement provided with the eraser of the 2nd example in the present invention. 本発明における第２例の消去具を備えた筆記具の後部の拡大縦断面図である。It is an expanded longitudinal section of the rear part of the writing implement provided with the eraser of the second example in the present invention. 本発明における第２例の消去具を備えた筆記具の使用状態を示す後部の拡大縦断面図である。FIG. 9 is an enlarged vertical cross-sectional view of a rear portion showing a use state of a writing instrument provided with the eraser of the second example of the present invention. 本発明における第３例の消去具を備えた筆記具の後部の拡大縦断面図である。It is an expanded longitudinal cross-sectional view of the rear part of the writing implement provided with the eraser of the third example in the present invention. 本発明における第３例の消去具を備えた筆記具の使用状態を示す後部の拡大縦断面図である。FIG. 11 is an enlarged vertical cross-sectional view of a rear portion showing a use state of a writing implement provided with the erasing implement of the third example of the present invention. 本発明における第４例の消去具を備えた筆記具の縦断面図である。It is a longitudinal section of a writing implement provided with the eraser of the 4th example in the present invention. 本発明における第５例の消去具を備えた筆記具の縦断面図である。It is a longitudinal section of the writing implement provided with the eraser of the 5th example in the present invention.

以下、図面を参酌して説明する。
図１は、本発明の第１例であるノック式筆記具の形態となっている。本実施例は、図に示す様にノックカバーと一体になった第１の消去部材である熱変色インク用の消去具１０が一本のノック式消去具であり、第２の消去部材である鉛筆芯用の消去具１１が軸筒３１内に収容される構成となっている。一般的な筆記具と同形態の一本の消去具とすることで幅が嵩まないことから、筆記具ケース等への収納を容易とし、携帯性に優れるという利点を有する。なお、本明細書中では、筆記部が突出する側を「前」側と規定し、筆記部とは反対側を「後」側と規定する。 Hereinafter, description will be made with reference to the drawings.
FIG. 1 shows a knock-type writing instrument according to a first embodiment of the present invention. In this embodiment, as shown in the drawing, the erasing device 10 for thermochromic ink, which is the first erasing member integrated with the knock cover, is a single knock-type erasing device and is a second erasing member. The erasing tool 11 for a pencil lead is housed in the barrel 31. Since the width is not increased by using a single erasing tool of the same form as a general writing tool, there is an advantage that storage in a writing tool case or the like is easy and portability is excellent. In this specification, the side on which the writing portion protrudes is defined as the “front” side, and the side opposite to the writing portion is defined as the “rear” side.

ここで、熱変色インクとは、常温（例えば２５℃）で所定の色彩（第１色）を維持し、所定温度（例えば６０℃）まで昇温させると別の色彩（第２色）へと変化し、その後、所定温度（例えば−５℃）まで冷却させると、再び元の色彩（第１色）へと復帰する性質を有するインクを言う。熱変色インクにおいて、上記第２色を無色とし、第１色（例えば赤）で筆記された描線を昇温させて無色とすることを、ここでは「消去する」ということとする。従って以下の実施形態では、描線が筆記された紙面等に対して摩擦体としての熱変色インク用の消去具によって擦過して摩擦熱を生じさせ、それによって描線を無色に変化、すなわち消去させる。なお、当然のことながら上記第２色は、無色以外の有色でもよい。また、特開２０１０−２４１８６７に記載されるような、不可逆熱変色インクとしてもよい。   Here, the thermochromic ink means that a predetermined color (first color) is maintained at normal temperature (for example, 25 ° C.), and when the temperature is raised to a predetermined temperature (for example, 60 ° C.), the color changes to another color (second color). After changing to a predetermined temperature (for example, −5 ° C.), the ink has a property of returning to the original color (first color) again. In the thermochromic ink, setting the second color to be colorless and increasing the temperature of a drawn line written in the first color (for example, red) to be colorless is referred to as “erasing”. Therefore, in the following embodiment, frictional heat is generated by rubbing a paper surface or the like on which a drawing line is written with an erasing device for thermochromic ink as a frictional body, thereby changing the drawing line to colorless, that is, erasing. The second color may be a color other than colorless. Further, an irreversible thermochromic ink as described in JP-A-2010-241867 may be used.

また、本発明における第２の消去部材によって消去される描線を筆記するものとして、鉛筆芯のみならずシャープペンシルの芯、熱変色インクではない擦過によって消去可能なインクによる筆跡も含まれる。例えば消去可能なインクとは、水と、非熱可塑性の着色樹脂粒子と、非着色粒子とが少なくとも含有されたインクを示す。   In addition, the writing of the drawing line erased by the second erasing member in the present invention includes not only a pencil lead but also a pencil lead, and a handwriting made of ink which is not thermochromic ink and can be erased by rubbing. For example, the erasable ink refers to an ink containing at least water, non-thermoplastic colored resin particles, and non-colored particles.

鉛筆芯用の消去具１１の先端部分を軸筒３１から繰り出す動作として、熱変色インク用の消去具１０の後端をノックして前進させると、それと連動してチャック体３４と締め具３５が一体となって前進する。次いで、締め具３５の前端が口プラ３２の後端に当接して前進を阻止されると、チャック体３４のみが更に前進してその先端のテーパー部分３６が拡開する。その結果、鉛筆芯用の消去具１１がチャック体３４の先端孔を自重で挿通し、鉛筆芯用の消去具１１の先端が口プラ３２の内径部３３の後端に当接状態となる。こうしたノックを繰り返すことによって、鉛筆芯用の消去具１１は口プラ３２の内径部３３の先端から順次突出する。こうした機構は、通常知られるノック式のシャープペンシルと同じなのでそれ以上の説明は省略する。   When the rear end of the eraser 10 for thermochromic ink is knocked and advanced as an operation of feeding out the tip of the eraser 11 for the pencil lead from the barrel 31, the chuck body 34 and the fastener 35 are interlocked with the knock. Move forward as one. Next, when the front end of the fastener 35 comes into contact with the rear end of the opening plug 32 and is prevented from advancing, only the chuck body 34 further advances, and the tapered portion 36 at the distal end expands. As a result, the eraser 11 for the pencil lead penetrates the tip hole of the chuck body 34 by its own weight, and the tip of the eraser 11 for the pencil lead comes into contact with the rear end of the inner diameter portion 33 of the mouthpiece 32. By repeating such knocking, the eraser 11 for the pencil lead sequentially projects from the tip of the inner diameter portion 33 of the mouthpiece 32. Since such a mechanism is the same as a conventionally known knock type mechanical pencil, further description is omitted.

また、軸筒３１の先端には口プラ３２が相互の螺合等により固着されている。また、口プラ３２の内径部３３には鉛筆芯用の消去具１１の外面に摩擦係合して適宜に鉛筆芯用の消去具１１を保持する部位が突起又はリブ等で形成されている。なお、口プラ３２を後述する熱変色インク用の消去具の材料で形成することによって、熱変色インク用の消去具として利用してもよい。それにより、鉛筆芯用の消去具と熱変色インク用の消去具との切り替えを容易にすることもできる。   A mouth plug 32 is fixed to the tip of the shaft cylinder 31 by mutual screwing or the like. Further, on the inner diameter portion 33 of the mouth plug 32, a portion that is frictionally engaged with the outer surface of the pencil lead erasing tool 11 and appropriately holds the pencil lead erasing tool 11 is formed by a protrusion or a rib. By forming the mouth plug 32 with a material of a thermochromic ink erasing device to be described later, it may be used as a thermochromic ink erasing device. Thereby, it is also possible to easily switch between the eraser for the pencil lead and the eraser for the thermochromic ink.

図２は、本発明における第２例の消去具を備えた筆記具である複式筆記具である。図２に示された複式筆記具は、後端のノックカバー４５を前方へ押圧することで、筆記体４１が軸筒３１の先端から露出して筆記可能となり、クリップ６０の後端部を軸心に押圧することで筆記体４１が軸筒３１内に収容される。具体的には、この複式筆記具は、軸筒３１内に複数の筆記体４１と、軸筒３１内に配置されかつ筆記体４１の各々を区画して配置するガイド筒４２と、複式筆記具の長手方向に延びる棒状に形成されかつ筆記体の後方に配置された振り子４３と、振り子４３の後端部に取り付けられたスライド駒４４と、ノックカバー４５とを有している。そして、所望する筆跡を得るための筆記体４１の選択を、重力に従動する振り子４３によって行うようにしている。すなわち、ユーザーは、所望する筆記体４１の位置に対応させて軸筒３１を鉛直方向に対して傾斜させることで、振り子４３を重力により傾動させ、振り子４３の先端が所望する筆記体４１の後端と相対向するようにガイド筒４２の対応する区画に位置合わせする。次いで、ユーザーは、ノックカバー４５をノック操作して、位置合わせした振り子４３を前進させて所望する筆記体４１を押圧して、筆記体４１の先端を軸筒３１の先端より突出させる。この複式筆記具は、片手で筆記体を突出又は収納させることができる上に、軸筒から外方に突出した操作部を持つ複式筆記具と比べて、軸筒の意匠性に優れた筆記具とすることができる。   FIG. 2 shows a double-type writing instrument which is a writing instrument provided with the erasing tool of the second example of the present invention. In the dual-purpose writing instrument shown in FIG. 2, the writing body 41 is exposed from the front end of the barrel 31 and can be written by pressing the knock cover 45 at the rear end forward, and the rear end of the clip 60 is positioned at the center. The writing body 41 is accommodated in the shaft cylinder 31 by pressing the button. Specifically, the compound writing instrument includes a plurality of writing bodies 41 in the barrel 31, a guide cylinder 42 disposed in the barrel 31 and partitioning each of the writing bodies 41, and a longitudinal section of the compound writing instrument. The pendulum includes a pendulum 43 which is formed in a bar shape extending in the direction and is arranged behind the cursive writing, a slide piece 44 attached to the rear end of the pendulum 43, and a knock cover 45. The selection of the cursive writing 41 for obtaining the desired handwriting is performed by the pendulum 43 driven by gravity. That is, the user inclines the pendulum 43 by gravity by inclining the barrel 31 with respect to the vertical direction in accordance with the position of the desired writing body 41, so that the tip of the pendulum 43 is behind the desired writing body 41. It is aligned with the corresponding section of the guide cylinder 42 so as to face the end. Next, the user performs a knock operation on the knock cover 45 to advance the aligned pendulum 43 to press a desired writing body 41 so that the tip of the writing body 41 protrudes from the tip of the barrel 31. This double-type writing instrument can be a writing instrument that is superior in design of the barrel, as compared with a multiple-writing instrument having an operating portion projecting outward from the barrel, in addition to allowing the writing body to protrude or be stored with one hand. Can be.

複式筆記具の軸筒３１内に収容された複数の筆記体４１には、シャープペンシル及びボールペンが、少なくとも各々１本以上含まれている。シャープペンシルには鉛筆芯が収容され、ボールペンには熱変色インクが充填されている。または、シャープペンシルには熱変色インクと同様の性質を有する熱変色芯が収容され、ボールペンには消しゴム消去性インクが充填されるようにしてもよい。または、軸筒３１内にシャープペンシルの筆記体４１を追加し、その芯を鉛筆芯用の消去具又は熱変色インク用の消去具としてもよい。さらに、筆記体４１は、サインペン体、筆体等であってもよい。   The plurality of writing bodies 41 accommodated in the barrel 31 of the dual-purpose writing instrument include at least one mechanical pencil and at least one ballpoint pen. A pencil lead houses a pencil lead, and a ballpoint pen is filled with thermochromic ink. Alternatively, the mechanical pencil may contain a thermochromic core having the same properties as the thermochromic ink, and the ballpoint pen may be filled with an eraser erasable ink. Alternatively, a pencil pencil writing body 41 may be added to the barrel 31 and the core may be used as an eraser for a pencil lead or an eraser for thermochromic ink. Further, the writing body 41 may be a felt-tip pen body, a brush body, or the like.

図３は、本発明における第２例の消去具を備えた筆記具の後部の拡大縦断面図である。複式筆記具の後端のノックカバー４５は、第１の消去部材である熱変色インク用の消去具１０として使用可能である。また、ノックカバー４５内には、軸筒３１の後端部に設けられた筒状のノックパイプ４６に対して、筒状の消去部材ホルダ４７が着脱可能に嵌め込まれている。消去部材ホルダ４７は、円柱状に形成されかつ第２の消去部材である鉛筆芯用の消去具１１を保持している。従って、鉛筆芯用の消去具１１は、消去部材ホルダ４７を介して、ノックパイプ４６、すなわち軸筒３１に対して着脱可能である。このため、鉛筆芯用の消去具１１は、ノックパイプ４６に対する着脱時に側面を損傷することがない。   FIG. 3 is an enlarged vertical sectional view of a rear portion of a writing instrument provided with the eraser of the second example of the present invention. The knock cover 45 at the rear end of the double-type writing instrument can be used as the erasing tool 10 for thermochromic ink, which is the first erasing member. In the knock cover 45, a tubular erasing member holder 47 is detachably fitted to a tubular knock pipe 46 provided at the rear end of the shaft cylinder 31. The erasing member holder 47 is formed in a columnar shape and holds the erasing tool 11 for a pencil lead, which is a second erasing member. Therefore, the erasing tool 11 for a pencil lead is detachable from the knock pipe 46, that is, the barrel 31 via the erasing member holder 47. For this reason, the eraser 11 for a pencil lead does not damage the side surface when attaching and detaching to and from the knock pipe 46.

図４は、本発明における第２例の消去具を備えた筆記具の使用状態を示す後部の拡大縦断面図である。熱変色インクの筆跡を消去する場合には、熱変色インク用の消去具１０であるノックカバー４５によって筆跡を擦過して摩擦熱を生じさせて消去する。このとき、ノックカバー４５は、軸筒３１の後端部に取り付けた状態で使用してもよく、又は軸筒３１から取り外した単体の状態で使用してもよい。   FIG. 4 is an enlarged vertical cross-sectional view of a rear portion showing a use state of a writing implement provided with the eraser of the second example of the present invention. When erasing the handwriting of the thermochromic ink, the handwriting is rubbed by the knock cover 45, which is the erasing device 10 for the thermochromic ink, to generate frictional heat and erase. At this time, the knock cover 45 may be used in a state of being attached to the rear end of the barrel 31, or may be used in a state of being detached from the barrel 31.

他方、鉛筆芯の筆跡を消去する場合には、ノックカバー４５を取り外し、鉛筆芯用の消去具１１によって筆跡を擦過して消去する。このとき、鉛筆芯用の消去具１１は、軸筒３１の後端部に取り付けた状態で使用してもよく、又は消去部材ホルダ４７と共に軸筒３１から取り外した単体の状態で使用してもよい。   On the other hand, when erasing the handwriting of the pencil lead, the knock cover 45 is removed, and the handwriting is rubbed and erased by the pencil lead erasing tool 11. At this time, the erasing tool 11 for a pencil lead may be used in a state where it is attached to the rear end of the barrel 31, or may be used alone in a state removed from the barrel 31 together with the erasing member holder 47. Good.

なお、本実施例において、消去部材ホルダ４７に保持される消去具を熱変色インク用の消去具１０の材料で形成することによって、熱変色インク用の消去具として利用してもよく、ノックカバー４５を鉛筆芯用の消去具１１の材料で形成することによって、鉛筆芯用の消去具として利用してもよい。   In this embodiment, the erasing member held by the erasing member holder 47 may be formed of the material of the erasing device 10 for thermochromic ink, so that the erasing device may be used as an erasing device for thermochromic ink. By forming 45 from the material of the eraser 11 for a pencil lead, it may be used as an eraser for a pencil lead.

図５は、本発明における第３例の消去具を備えた筆記具の後部の拡大縦断面図である。第２例の消去具を備えた筆記具と異なる点は、ノックカバー４５が消去具の汚れを防ぐ単なるカバー部材であり、消去具としては用いない点である。その代わりに、消去部材ホルダ４７を第１の消去部材である熱変色インク用の消去具１０の材料で形成することによって、熱変色インク用の消去具１０として使用する。   FIG. 5 is an enlarged vertical sectional view of a rear portion of a writing instrument provided with the erasing tool of the third example of the present invention. The difference from the writing implement provided with the eraser of the second example is that the knock cover 45 is merely a cover member for preventing the eraser from being stained, and is not used as the eraser. Instead, the erasing member holder 47 is formed of the material of the erasing device 10 for thermochromic ink, which is the first erasing member, and is used as the erasing device 10 for thermochromic ink.

図６は、本発明における第３例の消去具を備えた筆記具の使用状態を示す後部の拡大縦断面図である。熱変色インクの筆跡を消去する場合には、熱変色インク用の消去具１０である消去部材ホルダ４７をノックパイプ４６から取り外し、消去部材ホルダ４７で筆跡を擦過し、摩擦熱を生じさせて消去する。   FIG. 6 is an enlarged vertical cross-sectional view of a rear portion showing a use state of a writing implement provided with the erasing implement of the third example of the present invention. When erasing the handwriting of the thermochromic ink, the erasing member holder 47, which is the erasing tool 10 for the thermochromic ink, is removed from the knock pipe 46, and the handwriting is rubbed with the erasing member holder 47 to generate frictional heat to erase. I do.

他方、鉛筆芯の筆跡を消去する場合には、鉛筆芯用の消去具１１を消去部材ホルダ４７と共にノックパイプ４６から取り外し、鉛筆芯用の消去具１１によって筆跡を擦過して消去する。このとき、鉛筆芯用の消去具１１は、消去部材ホルダ４７に取り付けた状態で使用してもよく、又は消去部材ホルダ４７から取り外した単体の状態で使用してもよい。   On the other hand, when erasing the handwriting of the pencil lead, the erasing tool 11 for the pencil lead is removed from the knock pipe 46 together with the erasing member holder 47, and the handwriting is rubbed and erased by the erasing tool 11 for the pencil lead. At this time, the erasing tool 11 for a pencil lead may be used in a state where it is attached to the erasing member holder 47, or may be used in a single state removed from the erasing member holder 47.

なお、本実施例において、消去部材ホルダ４７に保持される消去具を熱変色インク用の消去具１０の材料で形成することによって、熱変色インク用の消去具として利用してもよく、消去部材ホルダ４７を鉛筆芯用の消去具１１の材料で形成することによって、鉛筆芯用の消去具として利用してもよい。   In the present embodiment, the erasing member held by the erasing member holder 47 may be formed of the material of the erasing device 10 for thermochromic ink, and may be used as the erasing device for thermochromic ink. By forming the holder 47 from the material of the eraser 11 for a pencil lead, it may be used as an eraser for a pencil lead.

図７は、本発明における第４例の消去具を備えた筆記具の縦断面図である。図７（ａ）は、ボールペン等筆記体５１を突出させた状態、図７（ｂ）は、シャープペンシル筆記体５２を突出させた状態を示す。複式筆記具の後方端には、第１の消去部材である熱変色インク用の消去具１０として使用可能なノックカバー４５が取り付けられている。ノックカバー４５内には、軸筒３１の後端部に対して、消去部材ホルダ４７が固定して取り付けられている。消去部材ホルダ４７は、第２の消去部材である鉛筆芯用の消去具１１を保持している。従って、鉛筆芯用の消去具１１は、円柱状に形成され、消去部材ホルダ４７に対して着脱可能である。   FIG. 7 is a longitudinal sectional view of a writing instrument provided with the eraser of the fourth example of the present invention. 7A shows a state in which the writing body 51 such as a ballpoint pen is projected, and FIG. 7B shows a state in which the mechanical pencil writing body 52 is projected. A knock cover 45 that can be used as the eraser 10 for thermochromic ink, which is the first eraser, is attached to the rear end of the double-type writing implement. In the knock cover 45, an erasing member holder 47 is fixedly attached to the rear end of the barrel 31. The erasing member holder 47 holds the erasing tool 11 for a pencil lead, which is a second erasing member. Therefore, the eraser 11 for a pencil lead is formed in a columnar shape, and is detachable from the eraser holder 47.

軸筒３１内には熱変色性である熱変色インク又は消しゴム消去性インクが充填されているボールペン等筆記体５１と鉛筆芯又は熱変色芯が内蔵されているシャープペンシル筆記体５２とが収容されている。一本の筆記具に二種類以上の筆記体と二種類の消去具を一体で収容することで、筆記具ケース等への収納を容易とし、携帯性に優れた筆記具及び消去具にすることができる。なお、ボールペン等筆記体における筆記部は、液体のインクであればボールペン体、サインペン体、筆体等であってもよい。   A writing body 51 such as a ball-point pen filled with thermochromic ink or eraser erasable ink which is thermochromic and a pencil pencil writing body 52 containing a pencil core or thermochromic core are housed in the barrel 31. ing. By accommodating two or more types of writing objects and two types of erasers integrally in one writing implement, storage in a writing implement case or the like becomes easy, and a writing implement and an eraser excellent in portability can be obtained. Note that the writing portion in a writing body such as a ballpoint pen may be a ballpoint pen body, a felt-tip pen body, a brush body, or the like as long as the ink is liquid ink.

筆記体の選択動作として、軸筒３１に対してクリップ６０を回転すると円筒カム５３の回転に伴うカム斜面５４によって何れかの筆記体を選択してその筆記先端部を口プラ３２の先端口から突出させることが可能となる。また、選択された筆記体がシャープペンシル筆記体５２の場合には熱変色インク用の消去具１０の後端をノックして芯を繰り出す。   When the clip 60 is rotated with respect to the barrel 31 as a cursive selection operation, one of the cursives is selected by the cam slope 54 accompanying the rotation of the cylindrical cam 53, and the writing tip is moved from the tip end of the mouth plug 32. It becomes possible to protrude. When the selected cursive is the mechanical pencil 52, the rear end of the eraser 10 for the thermochromic ink is knocked out and the core is extended.

鉛筆芯等の筆跡を消去する場合は、ノックカバー４５である熱変色インク用の消去具１０を取り外して鉛筆芯用の消去具１１を使用する。また、熱変色インク用の消去具１０は、筆記具に装着した状態でも取り外した単体の状態でも使うことができる。   When erasing handwriting such as a pencil lead, the eraser 10 for thermochromic ink, which is the knock cover 45, is removed, and the eraser 11 for a pencil lead is used. Further, the erasing device 10 for thermochromic ink can be used in a state of being attached to a writing instrument or in a state of being detached alone.

図８は、本発明における第５例の消去具を備えた筆記具の縦断面図である。図８（ａ）は、ボールペン等筆記体５１を突出させた状態、図８（ｂ）は、シャープペンシル筆記体５２を突出させた状態を示す。第４例と異なる点は、ノックカバー４５である熱変色インク用の消去具１０と鉛筆芯用の消去具１１とが、二色成形、接着等により一体に構成され、消去部材ホルダ４７に対して着脱可能となっている点である。なお、消去部材ホルダ４７において鉛筆芯用の消去具１１と嵌合する内面には、軸方向に複数のリブが形成されており、筆記具の後端側を鉛直下方に向けても鉛筆芯用の消去具１１が脱落しないようになっている。   FIG. 8 is a longitudinal sectional view of a writing instrument provided with a fifth example of the erasing instrument of the present invention. FIG. 8A shows a state in which the writing body 51 such as a ballpoint pen is projected, and FIG. 8B shows a state in which the mechanical pencil writing body 52 is projected. The difference from the fourth example is that the erasing device 10 for the thermochromic ink and the erasing device 11 for the pencil lead, which are the knock covers 45, are integrally formed by two-color molding, bonding or the like. The point is that it is removable. In the erasing member holder 47, a plurality of ribs are formed in the axial direction on the inner surface of the erasing member holder 47 which fits with the erasing tool 11 for a pencil lead. The erasing tool 11 does not fall off.

なお、第４例及び第５例において、消去部材ホルダ４７に保持される消去具を熱変色インク用の消去具１０の材料で形成することによって、熱変色インク用の消去具として利用してもよく、ノックカバー４５を鉛筆芯用の消去具１１の材料で形成することによって、鉛筆芯用の消去具として利用してもよい。   In the fourth and fifth examples, by forming the erasing device held by the erasing member holder 47 from the material of the erasing device 10 for thermochromic ink, the erasing device may be used as the erasing device for thermochromic ink. The knock cover 45 may be formed of the material of the eraser 11 for a pencil lead to be used as an eraser for a pencil lead.

上述した本発明の実施例によれば、筆記具による筆記描線を消去するための消去具であって、該消去具は液体のインクによる筆記描線を消去する第１の消去部材と固体による筆記描線を消去する第２の消去部材とが一体に構成されたことを特徴とする。それにより、筆記具のインクや芯の種類によらず、筆跡を消去可能な消去具を備えた筆記具を提供することができる。   According to the above-described embodiment of the present invention, there is provided an erasing device for erasing a writing line by a writing instrument, wherein the erasing device includes a first erasing member for erasing a writing line by a liquid ink and a writing line by a solid. A second erasing member to be erased is integrally formed. Thus, it is possible to provide a writing implement provided with an erasing implement capable of erasing handwriting regardless of the type of ink or the core of the writing implement.

また、第１の消去部材及び第２の消去部材は、ＪＩＳ Ｋ６２５３に規定されるデュロメータＡ硬度又はデュロメータＤ硬度が互いに異なることを特徴とすることで、消去時において第１の消去部材と第２の消去部材との区別が容易となり、簡便に使い分けることができる。   Further, the first erasing member and the second erasing member are characterized in that the durometer A hardness or the durometer D hardness specified in JIS K6253 are different from each other, so that the first erasing member and the second This can be easily distinguished from the erasing member, and can be easily used.

また、熱変色インク用の消去具は、ゴム弾性を有する材料や、軟質プラスチック、半硬質プラスチックが選ばれ、各種の熱可塑性樹脂、熱硬化性材料、熱可塑性材料、無機物・有機物の焼結体などの少なくとも１種（各単独、又は２種以上の混合物）を使用することにより構成することが望ましい。熱変色インク用の消去具として用いることができる熱可塑性材料としては、オレフィン系、スチレン系、ウレタン系、ポリエステル系、フッ素系などの熱可塑性エラストマーを用いることができ、また、熱硬化性材料としては、例えば、シリコーン系、エポキシ系、ウレタン系、メラミン系、尿素系、フェノール系などの各種合成ゴムや天然ゴムを用いることができる。さらにポリプロピレン樹脂及びスチレン系熱可塑性エラストマーの混合物、またはポリプロピレン樹脂及びポリプロピレン系熱可塑性エラストマーの混合物からなり、その配合比率がそれぞれ重量比で１：１〜１：４、更に好ましくは、オレフィン系樹脂とオレフィン系熱可塑性エラストマーの混合物からなり、その配合比率が重量比で１：２．５〜１：３．５となるものが、筆跡の消去に際し、摩擦熱の発生が容易であり、自己摩耗が少ないものとなるので、特に望ましい。   As the erasing device for the thermochromic ink, a material having rubber elasticity, a soft plastic, or a semi-hard plastic is selected, and various thermoplastic resins, thermosetting materials, thermoplastic materials, and inorganic / organic sintered bodies are used. It is preferable to use at least one of them (each alone or a mixture of two or more). As the thermoplastic material that can be used as the eraser for the thermochromic ink, olefin-based, styrene-based, urethane-based, polyester-based, and fluorine-based thermoplastic elastomers can be used, and as a thermosetting material. For example, various synthetic rubbers and natural rubbers such as silicone, epoxy, urethane, melamine, urea and phenol can be used. Furthermore, a mixture of a polypropylene resin and a styrene-based thermoplastic elastomer, or a mixture of a polypropylene resin and a polypropylene-based thermoplastic elastomer, the compounding ratio of which is 1: 1 to 1: 4, more preferably, an olefin resin and An olefin-based thermoplastic elastomer mixture having a compounding ratio of 1: 2.5 to 1: 3.5 in weight ratio is easy to generate frictional heat when erasing a handwriting, and self-wear is caused. It is particularly desirable because it reduces the number.

また、鉛筆芯用の消去具は、ＪＩＳ Ｓ６０５０ ３．２性能に記載される事項を満たした消しゴムで用いられる、塩化ビニル樹脂からなる塩ビ字消し、スチレン系熱可塑性エラストマーあるいはオレフィン系熱可塑性エラストマーからなる非塩ビ字消し及び天然ゴムからなる字消し等が選ばれる。   In addition, the eraser for a pencil lead is made of a vinyl chloride resin eraser, a styrene-based thermoplastic elastomer or an olefin-based thermoplastic elastomer, which is used for an eraser satisfying the requirements described in JIS S6050 3.2 Performance. Non-PVC erasers and natural rubber erasers are selected.

なお、本発明の各消去具の形状等は、特に限定されるものではなく、例えば、円柱状、角柱状、三角柱状、直方体、表面に凹凸や突起を有する複雑な形状としてもよいものであるが、点状に接触可能な角部、面状に接触可能な端部を一体に形成することが望ましい。   The shape and the like of each eraser of the present invention are not particularly limited, and may be, for example, a columnar shape, a prismatic shape, a triangular prism shape, a rectangular parallelepiped, or a complicated shape having irregularities or protrusions on the surface. However, it is desirable to integrally form a corner that can be contacted in a point-like manner and an end that can be contacted in a planar manner.

また、本発明の第１の消去部材及び第２の消去部材には、本発明の効果を損なわない範囲で、上記材質中に、着色剤、香料などを含有させて装飾性、識別性を向上させてもよく、さらに熱変色材料を含有させて筆跡の消去時に摩擦熱によって、変色可能にしてもよいのである。   In addition, the first erasing member and the second erasing member of the present invention contain a coloring agent, a fragrance, and the like in the above-described material to improve decorativeness and identifiability as long as the effects of the present invention are not impaired. Alternatively, a thermochromic material may be added to enable the color change by frictional heat when erasing the handwriting.

以上の通り、本発明は、鉛筆等の固形芯による筆記具での筆跡や、熱変色インクでの筆記具による筆跡でも効果的に消去できる消去具又は消去具を備えた筆記具であり、産業上利用できる有用な発明である。   INDUSTRIAL APPLICABILITY As described above, the present invention is a writing instrument with a writing instrument with a solid core such as a pencil, or an erasing instrument or a writing instrument with an erasing instrument that can be effectively erased even with a writing instrument with a thermochromic ink, and is industrially applicable. It is a useful invention.

１０ 熱変色インク用の消去具（第１の消去部材）
１１ 鉛筆芯用の消去具（第２の消去部材）
３１ 軸筒
３２ 口プラ
３３ 内径部
３４ チャック体
３５ 締め具
３６ テーパー部分
４１ 筆記体
４２ ガイド筒
４３ 振り子
４４ スライド駒
４５ ノックカバー
４６ ノックパイプ
４７ 消去部材ホルダ
５１ ボールペン等筆記体
５２ シャープペンシル筆記体
５３ 円筒カム
５４ カム斜面 10 Erasing device for thermochromic ink (first erasing member)
11 eraser for pencil lead (second eraser)
DESCRIPTION OF SYMBOLS 31 Shaft cylinder 32 Mouth plastic 33 Inner diameter part 34 Chuck body 35 Fastener 36 Taper part 41 Writing body 42 Guide cylinder 43 Pendulum 44 Slide piece 45 Knock cover 46 Knock pipe 47 Erasing member holder 51 Writing body such as ballpoint pen 52 Pencil writing body 53 Cylindrical cam 54 Cam slope

Claims (1)

熱変色インクによる筆跡用の筆記体と、熱変色インクとは異なる種類の筆跡用の筆記体とを具備し、前記熱変色インクによる筆跡を消去するための第１の消去部材と、前記熱変色インクとは異なる種類の筆跡を消去するための第２の消去部材と、をさらに具備し、
軸筒を鉛直方向に対して傾斜させることで、軸筒内の振り子を重力により傾動させ、振り子の先端が所望する筆記体の後端と相対向し、軸筒の後端のノックカバーを前方へ押圧することで、筆記体が軸筒の先端から露出して筆記可能となり、前記軸筒の側面のクリップの後端部を軸心に押圧することで筆記体が軸筒内に収容されることを特徴とする消去具を備えた筆記具。 A first erasing member for erasing handwriting by the thermochromic ink, comprising: a handwriting for a handwriting with the thermochromic ink; and a handwriting for a handwriting of a type different from the thermochromic ink; A second erasing member for erasing handwriting of a type different from ink.
By tilting the barrel with respect to the vertical direction, the pendulum in the barrel is tilted by gravity, the tip of the pendulum faces the desired rear end of the writing body, and the knock cover at the rear end of the barrel is moved forward. By pressing, the writing body is exposed from the tip of the barrel and can be written, and the writing body is housed in the barrel by pressing the rear end of the clip on the side surface of the barrel to the axis. A writing implement provided with an erasing implement.
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JP2013173358A (en) 2013-09-05

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