JP2010162752A - Writing utensil - Google Patents

Writing utensil Download PDF

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JP2010162752A
JP2010162752A JP2009006450A JP2009006450A JP2010162752A JP 2010162752 A JP2010162752 A JP 2010162752A JP 2009006450 A JP2009006450 A JP 2009006450A JP 2009006450 A JP2009006450 A JP 2009006450A JP 2010162752 A JP2010162752 A JP 2010162752A
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shaft
writing
rear direction
cylinder
writing instrument
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JP2009006450A
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Japanese (ja)
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Tetsuhiro Kurita
哲宏 栗田
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Pilot Ink Co Ltd
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Pilot Ink Co Ltd
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Priority to JP2009006450A priority Critical patent/JP2010162752A/en
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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 writing utensil which can adjust the exposed length of a pen nib from the front end of a shaft tube and can maintain an excellent appearance even after adjusting the pen nib exposed length from the front end of the shaft tube. <P>SOLUTION: A writing body 7 is held in a shaft tube 2, and the pen nib 71 of the writing body 7 is projected outside through the nose hole 31 of the shaft tube 2. The shaft tube 2 includes: a front shaft 3 which has a nose hole 31 at the front end; a rear shaft 4 which is connected with the rear end of the front shaft 3 to move in a fore-and-aft direction; and an operation tube 5 which makes the front shaft 3 move in a fore-and-aft direction to the rear shaft 4 through the rotation operation. A male screw section 33 is formed on the exterior surface of the front shaft 3. An annular groove 41 is formed on the exterior surface of the rear shaft 4. A female screw section 51 which can be screwed with the male screw section 33 and a pimple 52 which can be slidably engaged with the annular groove 41 are formed on the interior surface of the operation tube 5. A projection 32 is formed on the exterior surface of the front shaft 3. A recess 42 is formed on the interior surface of the rear shaft 4. The projection 32 is engaged with the recess 42 to slide in a fore-and-aft direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、筆記具に関する。詳細には、軸筒内に筆記体を収容し、前記筆記体のペン先を前記軸筒の前端孔を通して外部に突出させた筆記具に関する。 The present invention relates to a writing instrument. Specifically, the present invention relates to a writing instrument in which a writing body is accommodated in a shaft cylinder, and a pen tip of the writing body is projected to the outside through a front end hole of the shaft cylinder.

特許文献１には、軸筒が前軸と後軸とからなり、前軸と後軸が螺着されて取り外し可能に連結される多芯筆記具が記載されている。 Patent Document 1 describes a multi-core writing instrument in which a shaft cylinder includes a front shaft and a rear shaft, and the front shaft and the rear shaft are screwed together so as to be detachably connected.

特開平６−３１６１９５号公報JP-A-6-316195

前記従来の筆記具は、前軸と後軸との螺合を緩めることにより、軸筒の前端からのペン先出長さを調節できるとしても、前軸と後軸との間の軸筒外面に環状の隙間が形成され、外観性が損なわれるおそれがある。 The conventional writing instrument can be adjusted on the outer surface of the shaft cylinder between the front shaft and the rear shaft even though the pen tip length from the front end of the shaft tube can be adjusted by loosening the screwing between the front shaft and the rear shaft. An annular gap is formed, and the appearance may be impaired.

本発明は、前記従来の問題点を解決するものであって、軸筒の前端からのペン先出長さを調節できるとともに、軸筒の前端からのペン先出長さを調節した後でも優れた外観性を維持できる筆記具を提供しようとするものである。尚、本発明において、「前」とはペン先側を指し、「後」とはその反対側を指す。 The present invention solves the above-mentioned conventional problems, and can adjust the pen tip length from the front end of the shaft tube, and is excellent even after adjusting the pen tip length from the front end of the shaft tube. It is intended to provide a writing instrument that can maintain its appearance. In the present invention, “front” refers to the pen tip side, and “rear” refers to the opposite side.

本願の第１の発明は、軸筒２内に筆記体７を収容し、前記筆記体７のペン先７１を前記軸筒２の前端孔３１を通して外部に突出させた筆記具であって、前記軸筒２が、前端に前端孔３１を備えた前軸３と、該前軸３の後端部と前後方向に移動可能に接続される後軸４と、回転操作によって前記前軸３を前記後軸４に対して前後方向に移動させる操作筒５とからなり、前記前軸３または前記後軸４のうちの一方の外面にオネジ部３３，４４を形成し、前記前軸３または前記後軸４のうちの他方の外面に環状溝４１，３４を形成し、前記操作筒５の内面に、前記オネジ部３３，４４と螺合可能なメネジ部５１と、前記環状溝４１，３４と摺動可能に係合される突起５２とを形成し、前記前軸３または前記後軸４のうちの一方の外面に凸部３２，４３を形成し、前記前軸３または前記後軸４のうちの他方の内面に凹部４２，３５を形成し、前記凸部３２，４３と前記凹部４２，３５とが前後方向に摺動可能に係合されることを要件とする。（図１乃至図６参照） 1st invention of this application is the writing instrument which accommodated the writing body 7 in the axial cylinder 2, and made the pen point 71 of the said writing body 7 protrude outside through the front-end hole 31 of the said axial cylinder 2, Comprising: The cylinder 2 includes a front shaft 3 having a front end hole 31 at the front end, a rear shaft 4 connected to the rear end portion of the front shaft 3 so as to be movable in the front-rear direction, and the front shaft 3 by the rotation operation. The operation cylinder 5 is moved in the front-rear direction with respect to the shaft 4, and male screw portions 33, 44 are formed on one outer surface of the front shaft 3 or the rear shaft 4, and the front shaft 3 or the rear shaft 4, annular grooves 41, 34 are formed on the outer surface of the other side, an internal threaded portion 51, which can be screwed with the male thread portions 33, 44, and a sliding surface with the annular grooves 41, 34, on the inner surface of the operation cylinder 5. A protrusion 52 that can be engaged with the projection 32, 4 on the outer surface of one of the front shaft 3 and the rear shaft 4. The concave portions 42 and 35 are formed on the other inner surface of the front shaft 3 or the rear shaft 4, and the convex portions 32 and 43 and the concave portions 42 and 35 are slidable in the front-rear direction. It is necessary to be matched. (See FIGS. 1 to 6)

前記第１の発明の筆記具１は、操作筒５を回転操作することによって、前軸３が後軸４に対して前後方向に移動され、それにより、軸筒２の前端からのペン先出長さを調節できる。さらに、前記第１の発明の筆記具１は、軸筒２の前端からのペン先出長さを調節した後でも前記操作筒５によって、前軸３と後軸４との間に環状の隙間が視認されず、軸筒２外面の外観性が損なわれることがない。 In the writing instrument 1 according to the first aspect of the present invention, the front shaft 3 is moved in the front-rear direction with respect to the rear shaft 4 by rotating the operation tube 5, whereby the pen tip length from the front end of the shaft tube 2 is increased. You can adjust the height. Further, the writing instrument 1 of the first invention has an annular gap between the front shaft 3 and the rear shaft 4 by the operation tube 5 even after adjusting the pen tip length from the front end of the shaft tube 2. It is not visually recognized, and the appearance of the outer surface of the shaft tube 2 is not impaired.

本願の第２の発明は、前記第１の発明の筆記具１において、前記前軸３の後端部外面に凸部３２を形成し、前記凸部３２より前方の前軸３の外面にオネジ部３３を形成し、前記後軸４の前端部外面に環状溝４１を形成し、前記後軸４の前端部内面に前後方向に延びる凹部４２を形成し、前記前軸３の凸部３２と前記後軸４の凹部４２とが前後方向に摺動可能に係合されることを要件とする。（図１乃至図３参照） According to a second invention of the present application, in the writing instrument 1 of the first invention, a convex portion 32 is formed on the outer surface of the rear end portion of the front shaft 3, and a male screw portion is formed on the outer surface of the front shaft 3 in front of the convex portion 32. 33, an annular groove 41 is formed on the outer surface of the front end portion of the rear shaft 4, a concave portion 42 extending in the front-rear direction is formed on the inner surface of the front end portion of the rear shaft 4, and the convex portion 32 of the front shaft 3 and the It is a requirement that the recess 42 of the rear shaft 4 is slidably engaged in the front-rear direction. (See FIGS. 1 to 3)

前記第２の発明の筆記具１は、操作筒５の回転操作によって前軸３を後軸４に対して前後方向に確実に移動させることができ、且つ、前軸３と後軸４とを確実に相対回転不能に係合させることができる。 The writing instrument 1 according to the second aspect of the present invention can reliably move the front shaft 3 in the front-rear direction with respect to the rear shaft 4 by rotating the operation cylinder 5, and the front shaft 3 and the rear shaft 4 can be reliably moved. Can be engaged with each other such that they cannot rotate relative to each other.

本願の第３の発明は、前記第１の発明の筆記具１において、前記後軸４の前端部外面に凸部４３を形成し、前記凸部４３より後方の後軸４の外面にオネジ部４４を形成し、前記前軸３の後端部外面に環状溝３４を形成し、前記前軸３の後端部内面に前後方向に延びる凹部３５を形成し、前記後軸４の凸部４３と前記前軸３の凹部３５とが前後方向に摺動可能に係合されることを要件とする。（図４乃至図６参照） According to a third invention of the present application, in the writing instrument 1 of the first invention, a convex portion 43 is formed on the outer surface of the front end portion of the rear shaft 4, and the male screw portion 44 is formed on the outer surface of the rear shaft 4 behind the convex portion 43. An annular groove 34 is formed on the outer surface of the rear end portion of the front shaft 3, and a concave portion 35 extending in the front-rear direction is formed on the inner surface of the rear end portion of the front shaft 3. It is a requirement that the concave portion 35 of the front shaft 3 is slidably engaged in the front-rear direction. (See FIGS. 4 to 6)

前記第３の発明の筆記具１は、操作筒５の回転操作によって前軸３を後軸４に対して前後方向に確実に移動させることができ、且つ、前軸３と後軸４とを確実に相対回転不能に係合させることができる。 The writing instrument 1 according to the third aspect of the invention can reliably move the front shaft 3 in the front-rear direction with respect to the rear shaft 4 by rotating the operation cylinder 5, and the front shaft 3 and the rear shaft 4 can be reliably moved. Can be engaged with each other such that they cannot rotate relative to each other.

前記本願の第４の発明は、前記第１、第２、または第３の発明の筆記具１において、前記軸筒２内に複数の筆記体７を前後方向に移動可能に収容し、前記各々の筆記体７を弾発体８により後方に付勢し、前記各々の弾発体８を後軸４内に収容し、前記各々の筆記体７の後端に操作体７２を取り付け、前記後軸４の側壁に前後方向に延びる複数の窓孔４５を径方向に貫設し、前記各々の窓孔４５から径方向外方に前記各々の操作体７２を突出させ、一つの操作体７２を窓孔４５に沿って前方にスライドさせることにより、前記スライドした操作体７２が取り付けられた筆記体７のペン先７１を前記前軸３の前端孔３１を通して選択的に出没させてなることを要件とする。（図１乃至図６参照） According to a fourth invention of the present application, in the writing instrument 1 of the first, second, or third invention, a plurality of writing bodies 7 are accommodated in the shaft cylinder 2 so as to be movable in the front-rear direction, The writing bodies 7 are urged rearward by the projectile bodies 8, the respective projectile bodies 8 are accommodated in the rear shafts 4, and an operating body 72 is attached to the rear end of each of the cursive bodies 7. A plurality of window holes 45 extending in the front-rear direction are provided in the side wall of 4 in the radial direction, and the respective operation bodies 72 are protruded radially outward from the respective window holes 45 so that one operation body 72 is provided as a window. By sliding forward along the hole 45, the pen tip 71 of the writing body 7 to which the slidable operating body 72 is attached is selectively projected and retracted through the front end hole 31 of the front shaft 3. To do. (See FIGS. 1 to 6)

前記第４の発明の筆記具１は、軸筒２の前端からのペン先出長さを調節できる多芯タイプの出没式筆記具（即ち、複数の筆記体７のペン先７１を選択的に出没可能な多芯タイプの出没式筆記具）を得る。 The writing instrument 1 according to the fourth aspect of the invention is a multi-core type retractable writing instrument that can adjust the pen tip protruding length from the front end of the shaft tube 2 (that is, the pen tips 71 of a plurality of writing bodies 7 can be selectively projected and retracted). A multi-core type intrusive writing instrument).

本発明の筆記具によれば、軸筒の前端からのペン先出長さを調節できるとともに、軸筒の前端からのペン先出長さを調節した後でも優れた外観性を維持できる。 According to the writing instrument of the present invention, it is possible to adjust the pen tip length from the front end of the shaft tube and to maintain excellent appearance even after adjusting the pen tip length from the front end of the shaft tube.

本発明の第１の実施の形態の全ペン先没入状態の縦断面図である。It is a longitudinal cross-sectional view of the all pen nib immersion state of the 1st Embodiment of this invention. 図１のペン先突出状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the pen tip protrusion state of FIG. 図１のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 本発明の第２の実施の形態の全ペン先没入状態の縦断面図である。It is a longitudinal cross-sectional view of the all pen nib immersion state of the 2nd Embodiment of this invention. 図４のペン先突出状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the pen tip protrusion state of FIG. 図４のＢ−Ｂ線断面図である。It is the BB sectional view taken on the line of FIG.

＜第１の実施の形態＞
図１乃至図３に本発明の第１の実施の形態を示す。 <First Embodiment>
1 to 3 show a first embodiment of the present invention.

本実施の形態の筆記具１は、軸筒２内に複数本の筆記体７が収容され、前記各々の筆記体７のペン先７１が軸筒２の前端の前端孔３１より選択的（択一的）に外部に出没される多芯タイプの出没式筆記具である。前記各々の筆記体７の後端部には、操作体７２が取り付けられる。前記各々の筆記体７は、弾発体８（コイルスプリング）により後方に常時付勢されている。 In the writing instrument 1 of the present embodiment, a plurality of writing bodies 7 are accommodated in the shaft cylinder 2, and the pen tip 71 of each writing body 7 is selectively (alternative) from the front end hole 31 at the front end of the shaft cylinder 2. This is a multi-core type in / out type writing instrument that is in / out. An operation body 72 is attached to the rear end portion of each of the writing bodies 7. Each of the writing bodies 7 is always urged rearward by an elastic body 8 (coil spring).

前記軸筒２は、円筒状の前軸３と、前記前軸３に接続される円筒状の後軸４と、前記前軸３の外面及び後軸４の外面と係合される円筒状の操作筒５からなる。前記前軸３、前記後軸４、及び前記操作筒５は、合成樹脂または金属材料からなる。 The shaft cylinder 2 includes a cylindrical front shaft 3, a cylindrical rear shaft 4 connected to the front shaft 3, and a cylindrical shape engaged with the outer surface of the front shaft 3 and the outer surface of the rear shaft 4. It consists of an operation cylinder 5. The front shaft 3, the rear shaft 4, and the operation cylinder 5 are made of a synthetic resin or a metal material.

・前軸
前記前軸３の前端部は先細状に形成される。前記前軸３の前端に、前端孔３１が前後方向に貫設される。前記前軸３の後端部外面には、軸線に対して１８０度対称位置に１対の凸部３２が形成される。前記凸部３２の前方の前軸３外面にはオネジ部３３が形成される。 Front shaft The front end portion of the front shaft 3 is tapered. A front end hole 31 is provided in the front end of the front shaft 3 in the front-rear direction. A pair of convex portions 32 is formed on the outer surface of the rear end portion of the front shaft 3 at a position 180 degrees symmetrical with respect to the axis. A male thread portion 33 is formed on the outer surface of the front shaft 3 in front of the convex portion 32.

・後軸
前記後軸４の前端部外面に環状溝４１が形成される。前記後軸４の前端部内面に前後方向に延びる凹部４２が形成される。前記前軸３の凸部３２と前記後軸４の凹部４２とが前後方向に摺動可能に係合され、それにより、前記前軸３と前記後軸４とが確実に相対回転不能に係合される。 Rear shaft An annular groove 41 is formed on the outer surface of the front end of the rear shaft 4. A recess 42 extending in the front-rear direction is formed on the inner surface of the front end portion of the rear shaft 4. The convex portion 32 of the front shaft 3 and the concave portion 42 of the rear shaft 4 are slidably engaged in the front-rear direction, so that the front shaft 3 and the rear shaft 4 are reliably engaged with each other so as not to be relatively rotatable. Combined.

前記後軸４の後端部側壁には前後方向に延びる複数の窓孔４５が形成される。前記各々の窓孔４５から各々の筆記体７の操作体７２が外部に突出される。前記各々の操作体７２を窓孔４５に沿って前方にスライド操作することによって、各々の筆記体７のペン先７１が選択的に前端孔３１より出没される。前記後軸４の窓孔４５相互間の側壁内面には、係止壁部４６が一体に形成される。前記係止壁部４６に、ペン先突出状態の筆記体７の後端に取り付けられた操作体７２の後端が係止される。 A plurality of window holes 45 extending in the front-rear direction are formed in the rear end side wall of the rear shaft 4. The operation bodies 72 of the respective writing bodies 7 protrude from the respective window holes 45 to the outside. By sliding the operation bodies 72 forward along the window holes 45, the pen tips 71 of the writing bodies 7 are selectively projected and retracted from the front end holes 31. A locking wall portion 46 is integrally formed on the inner surface of the side wall between the window holes 45 of the rear shaft 4. The rear end of the operating body 72 attached to the rear end of the writing body 7 in the pen tip protruding state is locked to the locking wall portion 46.

前記後軸４の後端には、窓孔４５を後方に切り欠き状に開口する開口部が形成される。また、前記後軸４の後端には、前記開口部を開閉自在にする蓋部６が設けられる。前記蓋部６の前面には、ペン先没入状態の筆記体７に取り付けられた操作体７２の後端が当接可能な当接壁部６１が形成される。前記開口部を介して、操作体７２を備えた筆記体７を軸筒２内に挿入且つ軸筒２内から取り外し可能（交換可能）である。 An opening is formed at the rear end of the rear shaft 4 to open the window hole 45 in a notch rearward. A lid 6 is provided at the rear end of the rear shaft 4 to open and close the opening. On the front surface of the lid portion 6, an abutting wall portion 61 is formed on which the rear end of the operating body 72 attached to the pen-immersed writing body 7 can abut. The writing body 7 provided with the operating body 72 can be inserted into and removed from the shaft tube 2 (replaceable) through the opening.

・操作筒
前記操作筒５の内面には、前記前軸３のオネジ部３３と螺合可能なメネジ部５１が形成される。前記メネジ部５１よりも後方の操作筒５の内面には、前記後軸４の環状溝４１と係合される突起５２（例えば、環状突起または複数の分散状突起）が形成される。前記操作筒５内面の突起５２と前記後軸４外面の環状溝４１とは、周方向に摺動可能である。 -Operation cylinder On the inner surface of the operation cylinder 5, a female screw part 51 is formed which can be screwed with the male screw part 33 of the front shaft 3. A protrusion 52 (for example, an annular protrusion or a plurality of dispersed protrusions) that engages with the annular groove 41 of the rear shaft 4 is formed on the inner surface of the operation cylinder 5 behind the female thread portion 51. The protrusion 52 on the inner surface of the operation cylinder 5 and the annular groove 41 on the outer surface of the rear shaft 4 are slidable in the circumferential direction.

本実施の形態の筆記具１によれば、前記操作筒５を回転操作すると、前軸３が後軸４に対して前後方向に移動され、係止壁部４６と前軸３前端との軸方向の距離が調節でき、それにより、前軸３前端からの筆記体７のペン先７１の突出長さを調節することができる。さらに、本実施の形態の筆記具１によれば、軸筒２の前端からのペン先出長さを調節した後でも、前記操作筒５によって、前軸３と後軸４との間に環状の隙間が視認されず、軸筒２外面の外観性が損なわれることがない。 According to the writing instrument 1 of the present embodiment, when the operation tube 5 is rotated, the front shaft 3 is moved in the front-rear direction with respect to the rear shaft 4, and the axial direction between the locking wall portion 46 and the front end of the front shaft 3 , So that the protruding length of the nib 71 of the cursive body 7 from the front end of the front shaft 3 can be adjusted. Furthermore, according to the writing instrument 1 of the present embodiment, even after the pen tip protruding length from the front end of the shaft tube 2 is adjusted, the operation tube 5 causes the annular shape between the front shaft 3 and the rear shaft 4. The gap is not visually recognized, and the appearance of the outer surface of the shaft cylinder 2 is not impaired.

＜第２の実施の形態＞
図４乃至図６に本発明の第２の実施の形態を示す。 <Second Embodiment>
4 to 6 show a second embodiment of the present invention.

本実施の形態の筆記具１は、軸筒２内に複数本の筆記体７が収容され、前記各々の筆記体７のペン先７１が軸筒２の前端の前端孔３１より選択的（択一的）に外部に出没される多芯タイプの出没式筆記具である。前記各々の筆記体７の後端部には、操作体７２が取り付けられる。前記各々の筆記体７は、弾発体８（コイルスプリング）により後方に常時付勢されている。 In the writing instrument 1 of the present embodiment, a plurality of writing bodies 7 are accommodated in the shaft cylinder 2, and the pen tip 71 of each writing body 7 is selectively (alternative) from the front end hole 31 at the front end of the shaft cylinder 2. This is a multi-core type in / out type writing instrument that is in / out. An operation body 72 is attached to the rear end portion of each of the writing bodies 7. Each of the writing bodies 7 is always urged rearward by an elastic body 8 (coil spring).

前記軸筒２は、円筒状の前軸３と、前記前軸３に接続される円筒状の後軸４と、前記前軸３の外面及び後軸４の外面と係合される円筒状の操作筒５からなる。前記前軸３、前記後軸４、及び前記操作筒５は、合成樹脂または金属材料からなる。 The shaft cylinder 2 includes a cylindrical front shaft 3, a cylindrical rear shaft 4 connected to the front shaft 3, and a cylindrical shape engaged with the outer surface of the front shaft 3 and the outer surface of the rear shaft 4. It consists of an operating cylinder 5. The front shaft 3, the rear shaft 4, and the operation cylinder 5 are made of a synthetic resin or a metal material.

・前軸
前記前軸３の前端部は先細状に形成される。前記前軸３の前端に、前端孔３１が前後方向に貫設される。前記前軸３の後端部外面に環状溝３４が形成される。前記前軸３の後端部内面に前後方向に延びる凹部３５が形成される。 Front shaft The front end portion of the front shaft 3 is tapered. A front end hole 31 is provided in the front end of the front shaft 3 in the front-rear direction. An annular groove 34 is formed on the outer surface of the rear end portion of the front shaft 3. A recess 35 extending in the front-rear direction is formed on the inner surface of the rear end portion of the front shaft 3.

・後軸
前記後軸４の前端部外面には、軸線に対して１８０度対称位置に１対の凸部４３が形成される。前記凸部４３の後方の後軸４外面にはオネジ部４４が形成される。前記後軸４の凸部４３と前記前軸３の凹部３５とが前後方向に摺動可能に係合され、それにより、前記前軸３と前記後軸４とが確実に相対回転不能に係合される。 -Rear shaft A pair of convex portions 43 are formed on the outer surface of the front end portion of the rear shaft 4 at symmetrical positions 180 degrees with respect to the axis. A male screw portion 44 is formed on the outer surface of the rear shaft 4 behind the convex portion 43. The convex portion 43 of the rear shaft 4 and the concave portion 35 of the front shaft 3 are engaged so as to be slidable in the front-rear direction, so that the front shaft 3 and the rear shaft 4 are reliably engaged with each other so as not to be relatively rotatable. Combined.

前記後軸４の後端部側壁には前後方向に延びる複数の窓孔４５が形成される。前記各々の窓孔４５から各々の筆記体７の操作体７２が外部に突出される。前記各々の操作体７２を窓孔４５に沿って前方にスライド操作することによって、各々の筆記体７のペン先７１が選択的に前端孔３１より出没される。前記後軸４の窓孔４５相互間の側壁内面には、係止壁部４６が一体に形成される。前記係止壁部４６に、ペン先突出状態の筆記体７の後端に取り付けられた操作体７２の後端が係止される。 A plurality of window holes 45 extending in the front-rear direction are formed in the rear end side wall of the rear shaft 4. The operation bodies 72 of the respective writing bodies 7 protrude from the respective window holes 45 to the outside. By sliding the operation bodies 72 forward along the window holes 45, the pen tips 71 of the writing bodies 7 are selectively projected and retracted from the front end holes 31. A locking wall portion 46 is integrally formed on the inner surface of the side wall between the window holes 45 of the rear shaft 4. The rear end of the operating body 72 attached to the rear end of the writing body 7 in the pen tip protruding state is locked to the locking wall portion 46.

前記後軸４の後端には、窓孔４５を後方に切り欠き状に開口する開口部が形成される。また、前記後軸４の後端には、前記開口部を開閉自在にする蓋部６が設けられる。前記蓋部６の前面には、ペン先没入状態の筆記体７に取り付けられた操作体７２の後端が当接可能な当接壁部６１が形成される。前記開口部を介して、操作体７２を備えた筆記体７を軸筒２内に挿入且つ軸筒２内から取り外し可能（交換可能）である。 An opening is formed at the rear end of the rear shaft 4 to open the window hole 45 in a notch rearward. A lid 6 is provided at the rear end of the rear shaft 4 to open and close the opening. On the front surface of the lid portion 6, an abutting wall portion 61 is formed on which the rear end of the operating body 72 attached to the pen-immersed writing body 7 can abut. The writing body 7 provided with the operating body 72 can be inserted into and removed from the shaft tube 2 (replaceable) through the opening.

・操作筒
前記操作筒５の内面には、前記後軸４のオネジ部４４と螺合可能なメネジ部５１が形成される。前記メネジ部５１よりも前方の操作筒５の内面には、前記前軸３の環状溝３４と係合される突起５２（例えば、環状突起または複数の分散状突起）が形成される。前記操作筒５内面の突起５２と前記前軸３外面の環状溝３４とは、周方向に摺動可能である。 -Operation cylinder On the inner surface of the operation cylinder 5, a female screw part 51 is formed which can be screwed with the male screw part 44 of the rear shaft 4. A protrusion 52 (for example, an annular protrusion or a plurality of dispersed protrusions) that is engaged with the annular groove 34 of the front shaft 3 is formed on the inner surface of the operation cylinder 5 in front of the female thread portion 51. The protrusion 52 on the inner surface of the operation cylinder 5 and the annular groove 34 on the outer surface of the front shaft 3 are slidable in the circumferential direction.

本実施の形態の筆記具１によれば、前記操作筒５を回転操作すると、前軸３が後軸４に対して前後方向に移動され、係止壁部４６と前軸３前端との軸方向の距離が調節でき、それにより、前軸３前端からの筆記体７のペン先７１の突出長さを調節することができる。さらに、本実施の形態の筆記具１によれば、軸筒２の前端からのペン先出長さを調節した後でも、前記操作筒５によって、前軸３と後軸４との間に環状の隙間が視認されず、軸筒２外面の外観性が損なわれることがない。 According to the writing instrument 1 of the present embodiment, when the operation tube 5 is rotated, the front shaft 3 is moved in the front-rear direction with respect to the rear shaft 4, and the axial direction between the locking wall portion 46 and the front end of the front shaft 3 , So that the protruding length of the nib 71 of the cursive body 7 from the front end of the front shaft 3 can be adjusted. Furthermore, according to the writing instrument 1 of the present embodiment, even after the pen tip protruding length from the front end of the shaft tube 2 is adjusted, the operation tube 5 causes the annular shape between the front shaft 3 and the rear shaft 4. The gap is not visually recognized, and the appearance of the outer surface of the shaft cylinder 2 is not impaired.

１ 筆記具
２ 軸筒
３ 前軸
３１ 前端孔
３２ 凸部
３３ オネジ部
３４ 環状溝
３５ 凹部
４ 後軸
４１ 環状溝
４２ 凹部
４３ 凸部
４４ オネジ部
４５ 窓孔
４６ 係止壁部
５ 操作筒
５１ メネジ部
５２ 突起
６ 蓋部
６１ 当接壁部
７ 筆記体
７１ ペン先
７２ 操作体
８ 弾発体 DESCRIPTION OF SYMBOLS 1 Writing implement 2 Shaft cylinder 3 Front shaft 31 Front end hole 32 Convex part 33 Male thread part 34 Annular groove 35 Concave part 4 Rear shaft 41 Annular groove 42 Concave part 43 Convex part 44 Male thread part 45 Window hole 46 Locking wall part 5 Operation cylinder 51 Female thread part 52 Projection 6 Lid 61 Abutting Wall 7 Cursive Body 71 Pen Tip 72 Operating Body 8 Bullet

Claims (4)

軸筒内に筆記体を収容し、前記筆記体のペン先を前記軸筒の前端孔を通して外部に突出させた筆記具であって、前記軸筒が、前端に前端孔を備えた前軸と、該前軸の後端部と前後方向に移動可能に接続される後軸と、回転操作によって前記前軸を前記後軸に対して前後方向に移動させる操作筒とからなり、前記前軸または前記後軸のうちの一方の外面にオネジ部を形成し、前記前軸または前記後軸のうちの他方の外面に環状溝を形成し、前記操作筒の内面に、前記オネジ部と螺合可能なメネジ部と、前記環状溝と摺動可能に係合される突起とを形成し、前記前軸または前記後軸のうちの一方の外面に凸部を形成し、前記前軸または前記後軸のうちの他方の内面に凹部を形成し、前記凸部と前記凹部とが前後方向に摺動可能に係合されることを特徴とする筆記具。 A writing instrument that houses a writing body in a shaft cylinder, and the pen tip of the writing body protrudes outside through the front end hole of the shaft cylinder, and the shaft cylinder includes a front shaft provided with a front end hole at the front end; The rear shaft is connected to the rear end portion of the front shaft so as to be movable in the front-rear direction, and an operation cylinder that moves the front shaft in the front-rear direction with respect to the rear shaft by a rotation operation. A male threaded portion is formed on one outer surface of the rear shaft, an annular groove is formed on the outer surface of the other of the front shaft or the rear shaft, and the male threaded portion can be screwed onto the inner surface of the operation cylinder. Forming a female thread portion and a protrusion slidably engaged with the annular groove, forming a convex portion on one outer surface of the front shaft or the rear shaft, A recess is formed on the other inner surface, and the protrusion and the recess are engaged so as to be slidable in the front-rear direction. Writing instrument and butterflies. 前記前軸の後端部外面に凸部を形成し、前記凸部より前方の前軸の外面にオネジ部を形成し、前記後軸の前端部外面に環状溝を形成し、前記後軸の前端部内面に前後方向に延びる凹部を形成し、前記前軸の凸部と前記後軸の凹部とが前後方向に摺動可能に係合される請求項１記載の筆記具。 A convex portion is formed on the outer surface of the rear end portion of the front shaft, a male screw portion is formed on the outer surface of the front shaft in front of the convex portion, an annular groove is formed on the outer surface of the front end portion of the rear shaft, and The writing instrument according to claim 1, wherein a concave portion extending in the front-rear direction is formed on an inner surface of the front end portion, and the convex portion of the front shaft and the concave portion of the rear shaft are slidably engaged in the front-rear direction. 前記後軸の前端部外面に凸部を形成し、前記凸部より後方の後軸の外面にオネジ部を形成し、前記前軸の後端部外面に環状溝を形成し、前記前軸の後端部内面に前後方向に延びる凹部を形成し、前記後軸の凸部と前記前軸の凹部とが前後方向に摺動可能に係合される請求項１記載の筆記具。 A convex portion is formed on the outer surface of the front end portion of the rear shaft, a male screw portion is formed on the outer surface of the rear shaft behind the convex portion, an annular groove is formed on the outer surface of the rear end portion of the front shaft, and The writing instrument according to claim 1, wherein a concave portion extending in the front-rear direction is formed on an inner surface of the rear end portion, and the convex portion of the rear shaft and the concave portion of the front shaft are slidably engaged in the front-rear direction. 前記軸筒内に複数の筆記体を前後方向に移動可能に収容し、前記各々の筆記体を弾発体により後方に付勢し、前記各々の弾発体を後軸内に収容し、前記各々の筆記体の後端に操作体を取り付け、前記後軸の側壁に前後方向に延びる複数の窓孔を径方向に貫設し、前記各々の窓孔から径方向外方に前記各々の操作体を突出させ、一つの操作体を窓孔に沿って前方にスライドさせることにより、前記スライドした操作体が取り付けられた筆記体のペン先を前記前軸の前端孔を通して選択的に出没させてなる請求項１、２または３記載の筆記具。 A plurality of writing bodies are accommodated in the shaft cylinder so as to be movable in the front-rear direction, each of the writing bodies is urged rearward by a projectile, and each of the projectiles is accommodated in a rear shaft, An operating body is attached to the rear end of each cursive body, a plurality of window holes extending in the front-rear direction are provided in a radial direction on a side wall of the rear shaft, and each operation is performed radially outward from each window hole. By projecting the body and sliding one operation body forward along the window hole, the pen tip of the writing body to which the slide operation body is attached is selectively projected and retracted through the front end hole of the front shaft. The writing instrument according to claim 1, 2, or 3.
JP2009006450A 2009-01-15 2009-01-15 Writing utensil Pending JP2010162752A (en)

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102935773A (en) * 2012-11-30 2013-02-20 王星月 Universal pen shell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102935773A (en) * 2012-11-30 2013-02-20 王星月 Universal pen shell

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