JP2007069503A - Shaking-out type writing utensil - Google Patents

Shaking-out type writing utensil Download PDF

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JP2007069503A
JP2007069503A JP2005260268A JP2005260268A JP2007069503A JP 2007069503 A JP2007069503 A JP 2007069503A JP 2005260268 A JP2005260268 A JP 2005260268A JP 2005260268 A JP2005260268 A JP 2005260268A JP 2007069503 A JP2007069503 A JP 2007069503A
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weight body
type writing
swing
specific gravity
core
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Masahiro Kogure
正広 木暮
Tokuo Moriyama
徳男 守山
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Pilot Corp
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Pilot Corp
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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shaking-out type writing utensil, in which the latitude of designs such as the shape of the inner wall of a barrel, the shape of a writing body or the like can be widened and which can smoothly deliver a lead even when the travelling distance of a weighty body is short and/or the diameter of the barrel is fine in the shaking-out type writing utensil, and in which the writing lead is delivered by advancing a chuck due to the inertial force of the weighty body arranged in the barrel. <P>SOLUTION: In the shaking-out type writing utensil, in which the writing lead is delivered by advancing the chuck due to the inertial force of the weighty body arranged in the barrel, the weighty body is made of a high specific gravity composite material for injection molding blended with a high specific gravity filler. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、重量体の慣性力によりチャックを前進させて筆記芯を繰り出す振出式筆記具に関するものである。   The present invention relates to a swing-out type writing instrument that advances a chuck by an inertial force of a weight body to feed out a writing core.

従来から重量体の慣性力によりチャックを前進させて鉛芯やボールペンレフィル等の筆記芯を繰り出す振出式筆記具はよく知られていて、特開平１１−５３９０号公報「振出式シャープペンシル」等で開示されている。   2. Description of the Related Art Conventionally, a swing-out type writing instrument for advancing a chuck by the inertia force of a weight body and feeding out a lead core such as a lead core or a ballpoint pen refill is well known, and disclosed in Japanese Patent Laid-Open No. 11-5390, “Pumping type mechanical pencil” Has been.

こうした従来の振出式筆記具の重量体には、比較的に比重の高い真鍮などの金属部品を用いていた。
特開平１１−５３９０号公報 For the weight body of such a conventional swing-type writing instrument, a metal part such as brass having a relatively high specific gravity has been used.
Japanese Patent Laid-Open No. 11-5390

しかし、従来の重量体は、真鍮などの金属部品を用いているため、外壁や内壁等に凹凸部を形成したり、形壁形状を傾斜面上としたり、重量体の形状を任意に形成することが非常に困難であるため、その形状は、円筒形にすることが一般的であった。   However, since the conventional weight body uses metal parts such as brass, an uneven portion is formed on the outer wall or the inner wall, the shape wall shape is on an inclined surface, or the shape of the weight body is arbitrarily formed. Since it is very difficult, the shape is generally cylindrical.

そのため、軸筒や筆記体等の形状が非円筒形である場合には、重量体と軸筒及び／又は筆記体との間に空間ができていた。   For this reason, when the shape of the shaft cylinder or the writing body is a non-cylindrical shape, a space is formed between the weight body and the shaft cylinder and / or the writing body.

また、重量体の慣性力によりチャックを前進させて鉛芯やボールペンレフィル等の筆記芯を繰り出す振出式筆記具は、重量体が摺動するために、ある程度の全長が必要であるとともに、重量体は、筆記体の外側を摺動するので、重量体を配設するための空間を必要であり、軸筒を細くすることが困難であるため、前述した手帳用等の細径で、且つ全長の短い筆記具には不向きであった。   In addition, the swing-out writing instrument that advances the chuck by the inertial force of the weight body and feeds out a writing core such as a lead core or a ballpoint pen refill requires a certain length to slide the weight body. Since it slides on the outside of the cursive body, a space for arranging the weight body is required, and it is difficult to make the shaft cylinder thin. It was unsuitable for short writing instruments.

また、複数本の筆記体が組み合わされた多芯筆記具は、複数本の筆記体を配設するために、予め軸径を大きくしてあるので、重量体を配設する空間を設けると、より軸径が大きくなるので、把持しにくくなり、結果として筆記し難いという問題があった。   In addition, since the multi-core writing instrument in which a plurality of writing bodies are combined has a large shaft diameter in advance in order to arrange a plurality of writing bodies, if a space for arranging a weight body is provided, Since the shaft diameter is large, it is difficult to grasp and as a result, there is a problem that writing is difficult.

本発明は、軸筒内に配設した重量体の慣性力によりチャックを前進させて筆記芯を繰り出す振出式筆記具において、軸筒の内壁形状や筆記体の形状等、デザインの幅を広げることができ、重量体の移動距離が短く及び／又は軸筒が細径であってもスムーズに鉛芯を繰り出すことができる振出式筆記具を提供することを目的とするものである。   The present invention can widen the range of design, such as the shape of the inner wall of the shaft tube and the shape of the writing body, in a swing-type writing instrument that advances the chuck by the inertial force of the weight body arranged in the shaft tube and feeds out the writing core. An object of the present invention is to provide a swing-type writing instrument that can smoothly feed out a lead core even when the moving distance of the weight body is short and / or the shaft cylinder has a small diameter.

本発明は、軸筒内に配設した重量体の慣性力によりチャックを前進させて筆記芯を繰り出す振出式筆記具において、前記重量体が、高比重フィラーを混合した高比重の射出成形用複合材料で形成したことを特徴とする。   The present invention relates to an injection-type writing instrument in which a chuck is advanced by an inertial force of a weight body disposed in a shaft cylinder to feed out a writing core, wherein the weight body is a high specific gravity composite material for injection molding in which a high specific gravity filler is mixed. It is formed by.

また、前記重量体の比重が、１０．０ｇ／ｃｍ３以上の高比重の射出成形用複合材料で形成したことを特徴とする。 Further, the weight body is formed of a composite material for injection molding having a high specific gravity of 10.0 g / cm 3 or more.

また、前記重量体が、非円筒形であることを特徴とする。   Further, the weight body is non-cylindrical.

また、前記重量体の外壁面に、凹部及び／又は凸部を一体に形成してあることを特徴とする。   Further, a concave portion and / or a convex portion are integrally formed on the outer wall surface of the weight body.

本発明の振出式筆記具は、重量体として高比重フィラーを混合した高比重の射出成形用複合材料で形成されているために、形状を円筒形のみならず任意の形状にすることができるので、軸筒の内壁形状や筆記体の形状等、デザインの幅を広げることができる。   Since the swing-type writing instrument of the present invention is formed of a high specific gravity injection molding composite material mixed with a high specific gravity filler as a weight body, the shape can be any shape as well as a cylindrical shape. The width of the design, such as the inner wall shape of the barrel and the shape of the cursive body, can be expanded.

また、従来の真鍮に比べ比重が高い射出成形用複合材料で形成することによって、重量体の移動距離を短くすることが可能となるので、手帳用の筆記具等の軸筒が細径になってしまう筆記具や多芯筆記具等も従来と略同一の軸径で振出式筆記具を提供することができる。   In addition, by using a composite material for injection molding that has a higher specific gravity than conventional brass, it is possible to shorten the distance traveled by the weight body, so the shaft cylinder of a writing instrument for notebooks has a smaller diameter. For example, writing tools and multi-core writing tools can be provided with a swing-out type writing tool having a shaft diameter substantially the same as that of the prior art.

次に図面を参照しながら、本発明の振出式筆記具の実施例を説明するが、本発明は以下の実施例に限定されるものではない。   Next, embodiments of the swing-type writing instrument of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments.

以下、図１及び図２における振出式筆記具Ａは、黄銅等からなる金属製のチャック１の後端部に合成樹脂製のコネクター２を圧入固着する。また、チャック１の頭部１ａには締リング３が外嵌され、締リング３を受け止める内軸４の内段４ａとコネクター２の間に比較的弱い力のスプリング５が配設される。したがって、通常時は、スプリング５により後方に付勢されるチャック１の先端部は、締リング３に押圧されて閉じることによって芯６を保持する。   1 and 2, a synthetic resin connector 2 is press-fitted and fixed to a rear end portion of a metal chuck 1 made of brass or the like. A tightening ring 3 is externally fitted to the head 1 a of the chuck 1, and a spring 5 having a relatively weak force is disposed between the inner stage 4 a of the inner shaft 4 that receives the tightening ring 3 and the connector 2. Therefore, at the normal time, the tip end portion of the chuck 1 urged rearward by the spring 5 is pressed by the fastening ring 3 and closed to hold the core 6.

また、芯タンク７の先端部をコネクター２に係合し、コネクター２に対して芯タンク７を揺動可能に連結し、芯タンク７の後端部は中子１０の先端部１０ａ内に適宜揺動可能に挿入してある。この芯タンク７の外側に長手方向に摺動可能に重量体８を外嵌してある。   Further, the leading end of the lead tank 7 is engaged with the connector 2, and the lead tank 7 is pivotably connected to the connector 2, and the trailing end of the lead tank 7 is appropriately placed in the leading end 10 a of the core 10. It is inserted so that it can swing. A weight body 8 is fitted on the outside of the core tank 7 so as to be slidable in the longitudinal direction.

更に、ステンレスパイプで構成された軸筒１３の後端部に圧入固着した頭冠９の先端に中子１０を配置し、この中子１０の後端部に押圧部材１１を配設してある。また、頭冠９の内段部９ｂと押圧部材１１の外段部１１ａとの間にノックスプリング１２を配設してあるので、中子１０の後端が頭冠９の前端に当接する。更に、押圧部材１１の後端部にはノック部材１７が着脱可能に装着してある。   Further, a core 10 is disposed at the tip of the crown 9 that is press-fitted and fixed to the rear end of the shaft tube 13 made of stainless steel, and a pressing member 11 is disposed at the rear end of the core 10. . In addition, since the knock spring 12 is disposed between the inner step portion 9 b of the head crown 9 and the outer step portion 11 a of the pressing member 11, the rear end of the core 10 abuts against the front end of the head crown 9. Further, a knock member 17 is detachably attached to the rear end portion of the pressing member 11.

また、内軸４の前部凹溝にはＯリング１４が設けられ、この内軸４に芯ホルダー１５を内蔵した口金１６が着脱可能に螺合されるが、内軸４に設けられたＯリング１４が口金１６に圧接されて口金１６のゆるみが防止され振出式シャープペンシルが構成されている。   Further, an O-ring 14 is provided in the front concave groove of the inner shaft 4, and a base 16 having a core holder 15 built in is detachably screwed to the inner shaft 4. The ring 14 is brought into pressure contact with the base 16 to prevent the base 16 from being loosened, thereby forming an oscillating mechanical pencil.

本発明の重量体８は、高比重フィラーを混合した射出成形用複合材料により、形成してある。   The weight body 8 of the present invention is formed of a composite material for injection molding mixed with a high specific gravity filler.

本発明における高比重フィラーを混合した射出成形用複合材料とは、ＡＢＳや熱可塑性エラストマー等の射出成形材料にタングステン粉を混合した射出成形用複合材料であり、重量体の比重は、１０．０ｇ／ｃｍ３以上のものを選択することが好ましい。具体的には、株式会社メイトの「ＤＷ−Ａ１１０」（比重１１．０ｇ／ｃｍ３）、カネボウ合繊株式会社製：「ＭＣＴＳ８０６５」（比重１０．０ｇ／ｃｍ３）等が例示できる。真鍮の比重が約８．５ｇ／ｃｍ３を考慮すると、真鍮よりも高比重の重量体を用いることにより、同一形状であって重量を重くすることができるので、重量体が摺動する距離が短くてもスムーズに鉛芯を繰り出すことができる。 The injection molding composite material mixed with the high specific gravity filler in the present invention is an injection molding composite material in which tungsten powder is mixed with an injection molding material such as ABS or thermoplastic elastomer, and the specific gravity of the weight body is 10.0 g. It is preferable to select one that is at least / cm 3 . Specifically, “DW-A110” (specific gravity 11.0 g / cm 3 ) manufactured by Mate Co., Ltd., “MCTS8065” (specific gravity 10.0 g / cm 3 ) manufactured by Kanebo Gosei Co., Ltd. can be exemplified. Considering that the specific gravity of brass is about 8.5 g / cm 3 , it is possible to increase the weight with the same shape by using a weight body having a higher specific gravity than brass. Even if it is short, the lead core can be drawn out smoothly.

芯タンク７の外側に外嵌された重量体８はコネクター２の後端と中子１０の前端との間に長手方向に摺動可能に配置されるが、芯タンク７がコネクター２に対して揺動可能に連結されているので、芯タンク７と軸筒１４の間を摺動する重量体８は抵抗なく移動することができる。   The weight body 8 fitted on the outside of the core tank 7 is slidably disposed in the longitudinal direction between the rear end of the connector 2 and the front end of the core 10. Since the swingable connection is made, the weight body 8 that slides between the core tank 7 and the shaft tube 14 can move without resistance.

更に、内軸４の前部凹溝４ＢにはＯリング１４が設けられ、この内軸４に芯ホルダー１５を内蔵した口金１６が着脱可能に螺合されるが、この時内軸４に設けられたＯリング１４が口金１６に圧接されて口金１６のゆるみが防止され振出式シャープペンシルが構成される。   Further, an O-ring 14 is provided in the front concave groove 4B of the inner shaft 4, and a base 16 incorporating a core holder 15 is detachably screwed to the inner shaft 4. The O-ring 14 thus pressed is brought into pressure contact with the base 16 to prevent the base 16 from being loosened, thereby forming a swing-out mechanical pencil.

ノック体１７を押圧すると、ノック体１７に連動する押圧部材１１を前進させ、中子１０を介して芯タンク７を押圧する。その結果、芯タンク７が、コネクター２の後端に当接し、押圧することで、コネクター２が前進してチャック１を前方に移動させ芯６を繰り出すことができる。   When the knock body 17 is pressed, the pressing member 11 interlocked with the knock body 17 is advanced, and the core tank 7 is pressed through the core 10. As a result, the lead tank 7 comes into contact with and presses the rear end of the connector 2, so that the connector 2 moves forward and the chuck 1 can be moved forward to feed the lead 6.

また、振出式でシャープペンシルを使用する際には、振り出しにおいて鉛芯６を繰り出す場合には、筆記具を振ることにより生じる重量体８の慣性力により重量体８が長手方向前方に移動し、重量体８がコネクター２の後端に当接され、コネクター２が前進してチャック１を前方に移動させ芯６を繰り出すことができる。   Further, when using the mechanical pencil in the swing-out type, when the lead core 6 is fed out, the weight body 8 moves forward in the longitudinal direction due to the inertial force of the weight body 8 generated by shaking the writing instrument. The body 8 is brought into contact with the rear end of the connector 2, and the connector 2 moves forward to move the chuck 1 forward to feed out the core 6.

本発明の重量体は、射出成形用複合材料であるので、重量体の内壁及び／又は外壁に凹凸部も容易に形成することができので、図２に示すように、重量体１８の外周面に形成した凸部１８ａを、軸筒の内壁面に形成した凹部（図示せず）に摺動自在に遊嵌することによって、重量体１８が回転することなく、より抵抗なく移動することができる等、重量体の凹凸部によって回転防止機構とし、スムーズに摺動することができるようになる。   Since the weight body of the present invention is a composite material for injection molding, uneven portions can be easily formed on the inner wall and / or the outer wall of the weight body, so that the outer peripheral surface of the weight body 18 as shown in FIG. The weight 18 can be moved without resistance without rotating by the slidably loosely fitting the protrusion 18a formed on the inner wall of the shaft cylinder (not shown). For example, the uneven portion of the weight body can be used as an anti-rotation mechanism and can slide smoothly.

また、所望する形状、例えば、図３に例示したように、内壁形状を円形、外壁形状を６角形等、内壁形状と外壁形状が相違させる等、非円筒形状に容易に形成することができるので、軸筒の内壁及び芯タンクの外壁形状の制約がなくなり、デザインや構造等の幅が広がるとともに、軸筒の内壁や芯タンクの外壁形状と略同形に形成することができるので、無駄な空間を必要とせず、軸筒を細径に形成することができる。   Moreover, since it can be easily formed into a desired shape, for example, a non-cylindrical shape such as a circular inner wall shape and a hexagonal outer wall shape as shown in FIG. The inner wall of the shaft tube and the outer wall shape of the core tank are no longer restricted, the width of the design and structure is widened, and the inner wall of the shaft tube and the outer wall shape of the core tank can be formed to be substantially the same shape. The shaft tube can be formed to have a small diameter.

高比重フィラーを混合した射出成形用複合材料により重量体を形成することで、手帳用の振出式筆記具や複合筆記具に用いる振出式筆記具等の軸筒が細径となってしまう筆記具にも適用できる。   By forming a weight body with a composite material for injection molding mixed with a high specific gravity filler, it can also be applied to writing instruments in which shaft cylinders such as swing-out writing instruments for notebooks and swing-out writing instruments used in composite writing instruments have a small diameter. .

本発明の振出式筆記具を示す断面図である。It is sectional drawing which shows the swing-out type writing instrument of this invention. 重量体の他の例を示す断面図である。It is sectional drawing which shows the other example of a weight body. 重量体の他の例を示す斜視図である。It is a perspective view which shows the other example of a weight body.

符号の説明Explanation of symbols

Ａ 振出式筆記具
１ チャック
２ コレクター
３ 締めリング
４ 内軸
５ スプリング
６ 芯
７ 芯タンク
８、１８、２８ 重量体
９ 頭冠
１０ 中子
１１ 押圧部材
１２ ノックスプリング
１３ 軸筒
１４ Ｏリング
１５ 芯ホルダー
１６ 口金
１７ ノック部材
A swing-out writing instrument 1 chuck 2 collector 3 fastening ring 4 inner shaft 5 spring 6 core 7 core tank 8, 18, 28 weight body 9 crown 10 core 11 pressing member 12 knock spring 13 shaft cylinder 14 O ring 15 core holder 16 Base 17 Knock Member

Claims (4)

軸筒内に配設した重量体の慣性力によりチャックを前進させて筆記芯を繰り出す振出式筆記具において、前記重量体が、高比重フィラーを混合した高比重の射出成形用複合材料で形成したことを特徴とする振出式筆記具。 In a swing-out type writing instrument in which the chuck is advanced by the inertial force of the weight body disposed in the shaft cylinder to feed out the writing core, the weight body is formed of a high specific gravity injection molding composite material mixed with a high specific gravity filler. A swing-out type writing instrument. 前記重量体の比重が、１０．０ｇ／ｃｍ３以上の高比重の射出成形用複合材料で形成したことを特徴とする請求項１に記載の振出式筆記具。 The swing-type writing instrument according to claim 1, wherein the weight body is formed of a composite material for injection molding having a high specific gravity of 10.0 g / cm 3 or more. 前記重量体が、非円筒形であることを特徴とする請求項１または２に記載の振出式筆記具。 The swing-type writing instrument according to claim 1 or 2, wherein the weight body is non-cylindrical. 前記重量体の外壁面に、凹部及び／又は凸部を一体に形成してあることを特徴とする請求項１ないし３の何れか１項に記載の振出式筆記具。

The swing-out type writing instrument according to any one of claims 1 to 3, wherein a concave portion and / or a convex portion are integrally formed on an outer wall surface of the weight body.

JP2005260268A 2005-09-08 2005-09-08 Shaking-out type writing utensil Pending JP2007069503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005260268A JP2007069503A (en) 2005-09-08 2005-09-08 Shaking-out type writing utensil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005260268A JP2007069503A (en) 2005-09-08 2005-09-08 Shaking-out type writing utensil

Publications (1)

Publication Number Publication Date
JP2007069503A true JP2007069503A (en) 2007-03-22

Family

ID=37931379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005260268A Pending JP2007069503A (en) 2005-09-08 2005-09-08 Shaking-out type writing utensil

Country Status (1)

Country Link
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