JP5496815B2 - Writing instrument - Google Patents

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JP5496815B2
JP5496815B2 JP2010178709A JP2010178709A JP5496815B2 JP 5496815 B2 JP5496815 B2 JP 5496815B2 JP 2010178709 A JP2010178709 A JP 2010178709A JP 2010178709 A JP2010178709 A JP 2010178709A JP 5496815 B2 JP5496815 B2 JP 5496815B2
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main body
holder
writing
cover
writing instrument
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JP2012035539A (en
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敬吾 瀬川
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Zebra Co Ltd
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Zebra Co Ltd
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Description

本発明は、筆記具を持ったときにはペン先が突出し、筆記具を離したときにはペン先を没入することができる筆記具に関する。   The present invention relates to a writing instrument in which the pen tip protrudes when the writing instrument is held, and the pen tip can be immersed when the writing instrument is released.

従来から、筆記具を手で持つ動作によりペン先を突出し、非筆記時には、特別な操作をしなくても手から筆記具を離すことでペン先が没入する筆記具が提案されている。   2. Description of the Related Art Conventionally, there has been proposed a writing instrument in which the pen tip protrudes by an operation of holding the writing instrument by hand, and the pen tip immerses by removing the writing instrument from the hand when not writing, without performing a special operation.

特許文献1では、U字状の外ケース(2)の両側片(2a)間に筆記用リフィール(4)を備え、この筆記用リフィール(4)が挿入される挿入孔(9)を有する内ケース(3)が外ケース(2)の両側片(2a)間に摺動自在に嵌合する筆記具が提案されている。外ケース(2)と内ケース(3)間には、付勢手段(5)が設けられ、内ケース(3)を前方(筆記用リフィール(4)のペン先側)に付勢している。内ケース(3)は、カバー片(3a)の後端の係合段部(11)が外ケース(2)に設けられる係止突部(6a)と当接することにより、前方への抜け止めがなされている。よって、非筆記時には筆記用リフィール(4)の先端(ペン先)は没入される。   In Patent Document 1, an inner portion having a writing refill (4) between both side pieces (2a) of a U-shaped outer case (2) and having an insertion hole (9) into which the writing refill (4) is inserted. A writing instrument has been proposed in which the case (3) is slidably fitted between both side pieces (2a) of the outer case (2). A biasing means (5) is provided between the outer case (2) and the inner case (3), and biases the inner case (3) forward (the pen tip side of the writing refill (4)). . The inner case (3) is prevented from coming forward by the engagement step (11) at the rear end of the cover piece (3a) coming into contact with the locking projection (6a) provided on the outer case (2). Has been made. Therefore, the tip (pen nib) of the writing refill (4) is immersed when not writing.

特開2001−315487JP 2001-315487 A

上述の筆記具(1)においては、筆記用リフィール(4)のインクを使い切り、交換する際には、外ケース(2),内ケース(3),付勢手段(5)及び筆記用リフィール(4)を全て分解する必要がある。分解するには、内ケース(3)のカバー片(3a)を外向きに弾性変形することになるが、この弾性変形させる力加減を誤ると、破損等の恐れがある。また、分解してしまうと、付勢手段(5)等の部品の紛失の恐れも生じ易い。   In the writing instrument (1), when the ink of the writing refill (4) is used up and replaced, the outer case (2), the inner case (3), the urging means (5) and the writing refill (4 ) Must be disassembled. In order to disassemble, the cover piece (3a) of the inner case (3) is elastically deformed outward. However, if this force for elastic deformation is mistaken, there is a risk of damage. Also, if disassembled, parts such as the urging means (5) are likely to be lost.

本発明は、一端にペン先部を有する筆記芯と、ペン先部側を開口する略U字状に形成される操作本体と、前記操作本体の開口部に設けられ、ガイド手段により前記操作本体に対して相対的に前後動可能に形成されるカバー本体と、一端を前記操作本体に係止され、他端を前記カバー本体に係止される前記カバー本体を前記操作本体に対して前方に付勢するコイルバネと、を有し、前記操作本体は、前記操作本体の前端部に対向して設けられる操作部と、前記操作部に内向突起状に対向して形成される係合部と、前記操作部に連設し、弾性力を有する脚部と、前記脚部間を接続する基部から前方に立設し、前記筆記芯の後端部が挿入されることにより前記筆記芯を保持するホルダーと、前記ホルダー前端部近傍に設けられ、前記コイルバネの一端を係止するホルダー側バネ係止部と、を有し、前記カバー本体は、前記カバー本体を前後に貫通し、前記筆記芯が挿通可能に形成される貫通孔と、前記コイルバネの他端を係止するカバー本体側バネ係止部と、前記操作部の押圧操作により前記係合部が当接して前記操作本体に対してカバー本体を相対的に後方移動するよう斜面状に形成される駆動斜面と、前記係合部と係合することにより前記カバー本体の前方移動を規制する規制部と、を有することを特徴とする筆記具、である。   The present invention provides a writing core having a nib portion at one end, an operation main body formed in a substantially U shape that opens the pen nib portion side, and an opening of the operation main body. A cover main body formed to be movable relative to the front and rear, and one end of the cover main body locked to the operation main body and the other end locked to the cover main body. A biasing coil spring, and the operation body includes an operation portion provided to face a front end portion of the operation body, an engagement portion formed to face the operation portion in an inward projection shape, Continuing to the operation part, standing up from the leg part having elasticity and a base part connecting the leg parts, and holding the writing core by inserting the rear end part of the writing core A holder and one of the coil springs provided near the front end of the holder; A holder-side spring locking portion that locks the cover body, the cover body passing through the cover body in the front-rear direction, a through-hole formed so that the writing core can be inserted, and the other end of the coil spring. A cover main body side spring locking portion to be locked, and a drive formed in a slope shape so that the engagement portion abuts by a pressing operation of the operation portion and the cover main body moves relatively backward with respect to the operation main body. A writing instrument, comprising: a slope; and a restricting portion that restricts forward movement of the cover main body by engaging with the engaging portion.

本発明によれば、カバー本体を操作本体に対して相対的に前方に付勢するコイルバネの一端をホルダー(操作本体)側に係止し、他端をカバー本体に係止している。さらに、筆記芯は、後端をホルダーにより保持されている。よって、筆記芯のインクを使い切り、交換を要する場合には、操作部の押圧操作によるペン先部の突出状態でペン先部を摘んで引き抜けば、筆記芯を抜き出すことができる。筆記芯を引き抜いた後でも、コイルスプリングは操作本体及びカバー本体に係止されているので、脱落等の恐れが無い。さらに、従来技術に比べて、操作本体の操作部を外向きに開く等の破損の恐れのある操作が必要なく、安全に筆記芯の交換作業を行うことができる。   According to the present invention, one end of the coil spring that urges the cover body forward relative to the operation body is locked to the holder (operation body) side, and the other end is locked to the cover body. Further, the writing core is held at the rear end by a holder. Therefore, when the ink of the writing core is used up and needs to be replaced, the writing core can be extracted by grasping and pulling out the pen tip in the protruding state of the pen tip by the pressing operation of the operation unit. Even after the writing core is pulled out, the coil spring is locked to the operation main body and the cover main body, so there is no fear of dropping off. Furthermore, compared with the prior art, there is no need for an operation that may cause damage, such as opening the operation portion of the operation body outward, and the writing core replacement operation can be performed safely.

本発明の実施例1に係る筆記具の縦断面図であり、ペン先部が没入した状態(定常状態)を示す図である。It is a longitudinal cross-sectional view of the writing instrument which concerns on Example 1 of this invention, and is a figure which shows the state (steady state) where the pen tip part was immersed. 図1に対して、操作部の押圧操作によりペン先部を突出させた状態(筆記状態)を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state (writing state) which made the pen tip part protrude by the pressing operation of the operation part with respect to FIG. 図1に対応した筆記具1の外観を示す図である。It is a figure which shows the external appearance of the writing instrument 1 corresponding to FIG. 図2に対応した筆記具1の外観を示す図である。It is a figure which shows the external appearance of the writing instrument 1 corresponding to FIG. 図3を裏面(背面)から見た図である。It is the figure which looked at FIG. 3 from the back surface (back surface). 操作本体の部品図である。(a)はペン先部側から見た図であり、(b)は図1,3に対応した面から見た図である。It is component drawing of an operation main body. (A) is the figure seen from the pen-tip part side, (b) is the figure seen from the surface corresponding to FIG. カバー本体の部品図である。(a)は上方から見た図であり、(b)は図1,3に対応した面から見た図である。It is component drawing of a cover main body. (A) is the figure seen from upper direction, (b) is the figure seen from the surface corresponding to FIG.

以下、図面を参照しつつ本発明の実施例について説明する。なお、以下の説明において、前方向は、ペン先部(3a)側の方向を指す。   Embodiments of the present invention are described below with reference to the drawings. In the following description, the forward direction refers to the direction on the pen tip (3a) side.

本発明の実施例における筆記具1の構成について、図1を主に参照しつつ説明する。筆記具1は、ペン先部(3a)側に開口する略U字状に形成された操作本体2を有する。操作本体2は、後端部分である基部2aから前方側に延び、対向して設けられる脚部2bを有している。脚部2bは、平板状に形成されている。脚部2bの前方側端部には、操作部2cが連設されている。操作部2cは、ペン先部(3a)から見て略円弧状に形成されている(図6(a)参照)。さらに、操作部2cの円弧状端部2c1(張出し状部)は、R面取りされつつ傾斜面が設けられている。これにより、対向する操作部2cの押圧操作により操作部2c間が狭小動作する際、操作部2c間に誤って置かれた手指等を外方に押し出し、けが等を防止することができる。   The configuration of the writing instrument 1 in the embodiment of the present invention will be described with reference mainly to FIG. The writing instrument 1 has an operation main body 2 formed in a substantially U shape that opens to the pen tip (3a) side. The operation main body 2 has leg portions 2b that extend forward from a base portion 2a that is a rear end portion and are provided to face each other. The leg 2b is formed in a flat plate shape. An operation unit 2c is connected to the front side end of the leg 2b. The operation portion 2c is formed in a substantially arc shape when viewed from the pen tip portion (3a) (see FIG. 6A). Furthermore, the arcuate end 2c1 (overhang-like portion) of the operation portion 2c is provided with an inclined surface while being rounded. As a result, when the operation portion 2c is narrowly operated by the pressing operation of the opposing operation portion 2c, a finger or the like that is mistakenly placed between the operation portions 2c is pushed outward to prevent injury or the like.

なお、操作本体2は、全体を合成樹脂材料にて形成されている。よって、脚部2bは、操作部2cの押圧操作により弾性変形されるとともに、操作部2cの押圧力の解除により、弾性変形される前の形態に復帰することができる。   The operation body 2 is entirely formed of a synthetic resin material. Therefore, the leg portion 2b can be elastically deformed by the pressing operation of the operation portion 2c, and can return to the form before being elastically deformed by releasing the pressing force of the operation portion 2c.

脚部2b間(換言すれば、基部2aの前端中央部)には、前方に向って軸心に沿って円筒状にホルダー2dが立設している。ホルダー2dの前端部近傍は外径、内径ともに拡径されている。すなわちホルダー2d後方の小内径部2d1で筆記芯3(インクタンク3b)の後部を保持している。この保持力の程度は、手指等で抜差しができる程度の保持力である。なお、この保持力は、ホルダー2dの側面に開けられた長孔2d4(図6(b)参照)により適宜設定されるものである。   Between the legs 2b (in other words, at the center of the front end of the base 2a), a holder 2d is erected in a cylindrical shape along the axis toward the front. The vicinity of the front end of the holder 2d is expanded in both outer diameter and inner diameter. That is, the rear portion of the writing core 3 (ink tank 3b) is held by the small inner diameter portion 2d1 behind the holder 2d. The degree of the holding force is a holding force that can be inserted and removed with fingers or the like. This holding force is appropriately set by a long hole 2d4 (see FIG. 6B) opened in the side surface of the holder 2d.

ホルダー2dの前端部にある大内径部2d2は、後述の付勢部材であるコイルバネ4の外形を遊嵌しつつ、ガイドしている。そして、大内径部2d2と小内径部2d1との接続部2d3が傾斜状に形成されることにより、コイルバネ4の一端を係止可能に形成されている。   The large inner diameter portion 2d2 at the front end of the holder 2d guides the outer shape of a coil spring 4 that is an urging member described later while loosely fitting. Then, the connection portion 2d3 between the large inner diameter portion 2d2 and the small inner diameter portion 2d1 is formed in an inclined shape so that one end of the coil spring 4 can be locked.

また、操作部2cの後端の内面には、軸心と直交する平面と平行にして軸心方向に立設する(換言すれば、内向き突起状に形成される)係合壁2eが設けられている。係合壁2eの端部後方側は、後述の規制段部5eや係合段部5dと係合する係合部2e1が角状に形成されている。なお、係合壁2eには、補強のためのリブ2e2が設けられている。   Further, an engagement wall 2e is provided on the inner surface of the rear end of the operation portion 2c so as to be erected in the axial direction in parallel with a plane orthogonal to the axial center (in other words, formed as an inward projection). It has been. On the rear side of the end portion of the engagement wall 2e, an engagement portion 2e1 that engages with a later-described regulation step portion 5e and an engagement step portion 5d is formed in a square shape. The engaging wall 2e is provided with a rib 2e2 for reinforcement.

ここで、本実施例における筆記芯3は、先端にペン先部3aを有し、ペン先部3aと接続されるインクタンク3bを有する、いわゆるボールペンの中芯である。   Here, the writing core 3 in the present embodiment is a so-called ball-point pen core having a pen tip portion 3a at the tip and an ink tank 3b connected to the pen tip portion 3a.

操作本体2の開口部位(脚部2b,操作部2c)の間には、カバー本体5(図1,図3,図7参照)のカバー本体部5aが設けられている。カバー本体部5aは、外観を概略角筒状に形成されている。カバー本体部5aには軸心に沿って筆記芯3が挿通する貫通孔5bが貫通している。貫通孔5bの後方側は大内径部5b1として形成され、前方側は小内径部5b2として形成されている。大内径部5b1と小内径部5b2の接続部5b3は、大内径部5b1側から連設する傾斜状に形成される部分と、当該傾斜状に形成される部分から連設して設けられ、コイルバネ4の外径より若干大きく形成された内径部分を介して段部を形成しつつ小内径部5b2と接続する部分と、よりなる。そして、この接続部5b3(具体的には前記コイルバネ4の外径より若干大きく形成された内径部分)により、コイルバネ4の他端部が保持されている。保持力は、軽く嵌合される程度のものである。   A cover body 5a of the cover body 5 (see FIGS. 1, 3 and 7) is provided between the opening portions (the leg 2b and the operation section 2c) of the operation body 2. The cover body 5a is formed in a substantially rectangular tube appearance. A through hole 5b through which the writing core 3 is inserted passes through the cover body 5a along the axis. The rear side of the through hole 5b is formed as a large inner diameter portion 5b1, and the front side is formed as a small inner diameter portion 5b2. The connecting portion 5b3 between the large inner diameter portion 5b1 and the small inner diameter portion 5b2 is provided in a continuous manner from the inclined portion that is continuously provided from the large inner diameter portion 5b1 side, and the portion that is formed in the inclined shape, and a coil spring. 4 and a portion connected to the small inner diameter portion 5b2 while forming a stepped portion via an inner diameter portion formed slightly larger than the outer diameter. The other end of the coil spring 4 is held by the connecting portion 5b3 (specifically, an inner diameter portion formed slightly larger than the outer diameter of the coil spring 4). The holding force is such that it can be lightly fitted.

これにより、カバー本体部5aの接続部5b3及びホルダー2dの接続部2d3間でコイルバネ4は保持されるとともに、操作本体2に対してカバー本体5(カバー本体部5a)を前方側に付勢している。   Accordingly, the coil spring 4 is held between the connection portion 5b3 of the cover main body portion 5a and the connection portion 2d3 of the holder 2d, and the cover main body 5 (cover main body portion 5a) is urged forward with respect to the operation main body 2. ing.

ここで、カバー本体部5aの大内径部5b1の内径は、前述のホルダー2dの大内径部2d2の外周と摺接してガイド手段が形成されている。これにより、カバー本体部5a(カバー本体5)は、操作本体2に対して前後動可能にガイドされている。   Here, an inner diameter of the large inner diameter portion 5b1 of the cover main body portion 5a is in sliding contact with the outer periphery of the large inner diameter portion 2d2 of the holder 2d described above to form guide means. Thus, the cover main body 5a (cover main body 5) is guided to be movable back and forth with respect to the operation main body 2.

さらに、接続部5b3近傍の外周上には、操作本体2の係合壁2eと対向する位置に駆動斜面5cが形成されている。この駆動斜面5cは、カバー本体部5aの外面に対して前方側を低くして後方側を高くするよう鋭角斜面状に設けられている。そして、駆動斜面5cの前方側の端部には、係合段部5dが連設されている。一方、駆動斜面5cの後方側の端部には、規制段部5eが連設されている。定常状態(ペン先部3aの没入状態)においては、前方に付勢されるカバー本体5の前方側への移動が、係合部2e1と規制段部5eの係合により規制されている。   Further, on the outer periphery in the vicinity of the connecting portion 5b3, a drive slope 5c is formed at a position facing the engagement wall 2e of the operation body 2. The drive slope 5c is provided in an acute angle slope so that the front side is lowered and the rear side is raised with respect to the outer surface of the cover body 5a. An engagement step 5d is connected to the end of the drive slope 5c on the front side. On the other hand, a regulation step portion 5e is connected to the rear end portion of the drive slope 5c. In the steady state (the pen tip portion 3a is immersed), the forward movement of the cover body 5 biased forward is restricted by the engagement of the engaging portion 2e1 and the restricting step portion 5e.

ここで、図7を参照する。カバー本体5には、カバー本体部5aから後方へ延びるように立設する支持リブ5f,5gを介してクリップ5h付きの側板5h1及び側板5iが設けられている。側板5h1及び5iは、平板状に形成されている。クリップ5hは、側板5h1と連設して形成されており、いわゆる筆記具1のクリップとして紙等を挟み込むことができるものである。   Reference is now made to FIG. The cover body 5 is provided with a side plate 5h1 and a side plate 5i with a clip 5h via support ribs 5f and 5g that are provided so as to extend rearward from the cover body 5a. The side plates 5h1 and 5i are formed in a flat plate shape. The clip 5h is formed so as to be connected to the side plate 5h1, and can hold paper or the like as a clip of the so-called writing instrument 1.

側板5h1,5iは、操作本体2の側面を部分的に覆うカバーの役割を果たすものである。そして、図3,4に示す通り、操作部2cの後方側の円弧状端部2c1(張出し状部)は、その一部を側板5h1に対して円弧状端部2c1を下側にして(換言すれば側板5h1が覆いかぶさるようにして)設けられている。これにより、操作部2cと連設する脚部2bの軸心回りの捩り変形を防止している。すなわち、対向する操作部2cが図の紙面と垂直な方向に互いにずれようとする力を受けた場合でも、側板5h1とオーバーラップしている円弧状端部2c1とが当接することにより、操作部2c(脚部2b)の変形が防止されるものである。   The side plates 5h1 and 5i serve as a cover that partially covers the side surface of the operation main body 2. As shown in FIGS. 3 and 4, the arc-shaped end portion 2c1 (the overhang-shaped portion) on the rear side of the operation portion 2c has a part of the arc-shaped end portion 2c1 on the lower side with respect to the side plate 5h1 (in other words, In this case, the side plate 5h1 is covered). This prevents torsional deformation around the axis of the leg 2b that is connected to the operation unit 2c. That is, even when the opposing operation unit 2c receives a force that tends to deviate from each other in the direction perpendicular to the drawing sheet, the arcuate end 2c1 that overlaps the side plate 5h1 comes into contact with the operation unit 2c. The deformation of 2c (leg part 2b) is prevented.

なお、背面側(図5参照)の円弧状端部2c1は側板5iとオーバーラップされていない。少なくとも一部の円弧上端部2c1と側板がオーバーラップしていれば、捻り変形の防止が図れるからである。   Note that the arc-shaped end 2c1 on the back side (see FIG. 5) does not overlap the side plate 5i. This is because torsional deformation can be prevented if at least a part of the arc upper end 2c1 and the side plate overlap.

また、図3,図5,図6において、操作本体2の側板5h1,5iの側面と対応する縁部分には、ガイドリブ2fが立設している。側板5h1,5iの側面は、このガイドリブ2fと接触または近接することによりガイドされている。よって、カバー本体5の前後方向の移動を補助的ガイドし、ブレ等を防止している。   3, 5, and 6, guide ribs 2 f are erected on edge portions corresponding to the side surfaces of the side plates 5 h 1, 5 i of the operation main body 2. The side surfaces of the side plates 5h1 and 5i are guided by contacting or approaching the guide rib 2f. Therefore, auxiliary movement of the cover body 5 in the front-rear direction is prevented to prevent blurring and the like.

本実施例においては、さらに、一方の脚部2bの後方端部付近に、孔形成部2gが設けられている。孔形成部2gには図の紙面の上下方向に貫通する孔2g1が開けられている。ここにネックストラップ等を通すことができる。さらに、操作本体2の後端には、他物品(所定のアタッチメント部材等)を収納できる収納スペース2hが設けられている。   In the present embodiment, a hole forming portion 2g is further provided in the vicinity of the rear end portion of one leg portion 2b. The hole forming portion 2g is provided with a hole 2g1 penetrating in the vertical direction of the drawing sheet. A neck strap or the like can be passed here. Furthermore, a storage space 2h that can store other articles (a predetermined attachment member or the like) is provided at the rear end of the operation main body 2.

本実施例における筆記具1の作用を説明する。定常状態(図1,図3)において、一方の操作部2cと他方の操作部2cとを、それぞれ第1指(親指)と第2指(人差し指)で摘むようにして押圧する。すると、係合部2e1は、コイルバネ4の付勢力に抗して駆動斜面5cに倣って相対的に下っていく。すなわち、カバー本体5が相対的に後方に移動することとなる。係合部2e1が駆動斜面5cの前端に達すると、ペン先部3aが突出し、筆記状態となる。ここで、本実施例では、駆動斜面5cの前端部に係合段部5dが設けられているので、この筆記状態において係合部2e1と係合段部5dとが係合する。よって、操作部2cを軽く押圧するだけで(すなわち脚部2bの弾発力に抗して押圧するだけで)、係合部2e1と係合段部5dの係合状態、すなわちペン先部3aが突出した状態が保持され、筆記することができる(図2,図4)。   The effect | action of the writing instrument 1 in a present Example is demonstrated. In the steady state (FIGS. 1 and 3), the one operation unit 2c and the other operation unit 2c are pressed so as to be grasped by the first finger (thumb) and the second finger (index finger), respectively. Then, the engaging portion 2e1 descends relatively following the driving slope 5c against the urging force of the coil spring 4. That is, the cover main body 5 moves relatively rearward. When the engaging portion 2e1 reaches the front end of the drive slope 5c, the pen tip portion 3a protrudes and enters a writing state. Here, in the present embodiment, since the engagement step portion 5d is provided at the front end portion of the drive slope 5c, the engagement portion 2e1 and the engagement step portion 5d are engaged in this writing state. Therefore, the engagement state between the engagement portion 2e1 and the engagement step portion 5d, that is, the pen tip portion 3a can be obtained by lightly pressing the operation portion 2c (that is, only pressing against the elastic force of the leg portion 2b). Can be written and can be written (FIGS. 2 and 4).

操作部2cの押圧力を解除すると、脚部2bの弾性力により操作部2cは外向きに開放され、係合部2e1と係合段部5dの係合状態は解除される。そして、操作部2cは定常状態(図1,図3)の位置に復帰する。すると、カバー本体5はコイルバネ4の付勢力により前方に移動する。係合部2e1と規制段部5eの当接によりカバー本体5の前方移動が停止(規制)し、ペン先部3aが没入した定常状態に復帰する。   When the pressing force of the operation portion 2c is released, the operation portion 2c is released outward by the elastic force of the leg portion 2b, and the engagement state between the engagement portion 2e1 and the engagement step portion 5d is released. And the operation part 2c returns to the position of a steady state (FIG. 1, FIG. 3). Then, the cover main body 5 moves forward by the urging force of the coil spring 4. The forward movement of the cover body 5 is stopped (restricted) by the contact between the engaging portion 2e1 and the restricting step portion 5e, and the pendant portion 3a is restored to the steady state.

このように簡易にペン先部3aの出没操作を行うことができるので、従来公知の筆記具のように、後端のノック部を押したりキャップを外す等の動作無く筆記することができる。   Thus, the pen tip portion 3a can be easily moved in and out, so that writing can be performed without the operation of pushing the knock portion at the rear end or removing the cap, as in a conventionally known writing instrument.

さらに、本実施例における操作部2cは、対向する2つの操作部2cが円弧状に形成されている。よって、例えば一方を第2指(人差し指)の腹で押圧し、他方を第1指(親指)の腹と第3指(中指)の第一関節付近(すなわち爪の根本付近)で支持する、いわゆる3点支持による円筒状軸筒を有する一般的な筆記具と同様の方式により支持し、筆記することもできる。   Furthermore, the operation part 2c in a present Example has the two operation parts 2c which oppose formed in circular arc shape. Thus, for example, one side is pressed with the belly of the second finger (index finger), and the other is supported near the first joint (ie, near the base of the nail) of the first finger (thumb) and the third finger (middle finger). It can also be supported and written in the same manner as a general writing instrument having a cylindrical barrel with a so-called three-point support.

筆記芯3を交換する場合には、筆記状態(図2,図4)において、ペン先部3aを摘んで筆記芯3を引き抜くことができる。筆記芯3を引き抜いても、カバー本体5はカバー本体部5aの大内径部5b1の内径とホルダー2dの大内径部2d2の外周との摺接によりガイド手段が形成されており、コイルバネ4も両端を係止されているので、筆記芯3を引き抜いても筆記具1が分解等されることも無い。また、筆記芯の交換のために、操作本体2の操作部2c(及び脚部2b)を外向きに広げて筆記具1を分解する必要も無い。   When the writing core 3 is replaced, in the writing state (FIGS. 2 and 4), the writing core 3 can be pulled out by grasping the pen tip portion 3a. Even if the writing core 3 is pulled out, the cover body 5 is formed with guide means by sliding contact between the inner diameter of the large inner diameter part 5b1 of the cover main body part 5a and the outer periphery of the large inner diameter part 2d2 of the holder 2d. The writing instrument 1 is not disassembled even if the writing core 3 is pulled out. Further, it is not necessary to disassemble the writing instrument 1 by expanding the operation part 2c (and the leg part 2b) of the operation main body 2 outward for exchanging the writing core.

なお、ペン先部3aの突出量が小さく摘み難い場合には、さらに後方にカバー本体5を手動で移動させることもできる。また、係合段部5dのさらに前方に係合部2e1と係合可能な突起等(芯交換用係合部)を設けることにより、更に後方に移動したカバー本体5を係止させておくこともできる。   When the protruding amount of the pen tip portion 3a is small and difficult to pick, the cover body 5 can be manually moved further rearward. Further, by providing a protrusion or the like (a core replacement engagement portion) that can be engaged with the engagement portion 2e1 further forward of the engagement step portion 5d, the cover main body 5 moved further rearward is locked. You can also.

以上、本発明の実施例を詳細に説明したが、本発明はこれに限定されることなく、本発明の要旨を変更しない範囲で適宜変更することができる。   As mentioned above, although the Example of this invention was described in detail, this invention is not limited to this, In the range which does not change the summary of this invention, it can change suitably.

例えば、本実施例では操作部2cを横断面略円弧状に形成しているが、平板状に形成して、円弧状端部2c1に相当する張出し部を操作部(2c)又は脚部(2b)に設けて側板(5h1,5i)とオーバーラップさせてもよい。張出し状部は平板状,ピン状,突起状等の種々の形状を採用することができる。   For example, in the present embodiment, the operation portion 2c is formed in a substantially arc shape in cross section, but is formed in a flat plate shape, and the overhang portion corresponding to the arc-shaped end portion 2c1 is defined as the operation portion (2c) or the leg portion (2b). ) And may be overlapped with the side plates (5h1, 5i). Various shapes, such as a flat plate shape, a pin shape, and a protrusion shape, can be adopted as the overhang-like portion.

1 筆記具
2 操作本体
2a 基部
2b 脚部
2c 操作部
2c1 円弧状端部
2d ホルダー
2d1 小内径部
2d2 大内径部
2d3 接続部
2d4 長孔
2e 係合壁
2e1 係合部
2e2 リブ
2f ガイドリブ
2g 孔形成部
2g1 孔
2h 収納スペース
3 筆記芯
3a ペン先
3a ペン先部
3b インクタンク
4 コイルバネ
5 カバー本体
5a カバー本体部
5b 貫通孔
5b1 大内径部
5b2 小内径部
5b3 接続部
5c 駆動斜面
5d 係合段部
5e 規制段部
5f,5g 支持リブ
5h クリップ
5h1 側板
5i 側板
DESCRIPTION OF SYMBOLS 1 Writing instrument 2 Operation main body 2a Base part 2b Leg part 2c Operation part 2c1 Arc-shaped edge part 2d Holder 2d1 Small internal diameter part 2d2 Large internal diameter part 2d3 Connection part 2d4 Long hole 2e Engagement wall 2e1 Engagement part 2e2 Rib 2f Guide rib 2g Hole formation part 2g1 hole 2h storage space 3 writing core 3a pen tip 3a pen tip portion 3b ink tank 4 coil spring 5 cover body 5a cover body portion 5b through hole 5b1 large inner diameter portion 5b2 small inner diameter portion 5b3 connection portion 5c driving slope 5d engagement step portion 5e Regulating step 5f, 5g Support rib 5h Clip 5h1 Side plate 5i Side plate

Claims (3)

一端にペン先部を有する筆記芯と、
ペン先部側を開口する略U字状に形成される操作本体と、
前記操作本体の開口部に設けられ、ガイド手段により前記操作本体に対して相対的に前後動可能に形成されるカバー本体と、
一端を前記操作本体に係止され、他端を前記カバー本体に係止される前記カバー本体を前記操作本体に対して前方に付勢するコイルバネと、を有し、
前記操作本体は、
前記操作本体の前端部に対向して設けられる操作部と、
前記操作部に内向突起状に対向して形成される係合部と、
前記操作部に連設し、弾性力を有する脚部と、
前記脚部間を接続する基部から前方に立設し、前記筆記芯の後端部が挿入されることにより前記筆記芯を保持するホルダーと、
前記ホルダー前端部近傍に設けられ、前記コイルバネの一端を係止するホルダー側バネ係止部と、を有し、
前記カバー本体は、
前記カバー本体を前後に貫通し、前記筆記芯が挿通可能に形成される貫通孔と、
前記コイルバネの他端を係止するカバー本体側バネ係止部と、
前記操作部の押圧操作により前記係合部が当接して前記操作本体に対してカバー本体を相対的に後方移動するよう斜面状に形成される駆動斜面と、
前記係合部と係合することにより前記カバー本体の前方移動を規制する規制部と、
を有することを特徴とする筆記具。
A writing core having a nib at one end;
An operation body formed in a substantially U-shape opening the pen tip side;
A cover main body provided at an opening of the operation main body and configured to be movable back and forth relative to the operation main body by a guide means;
A coil spring that has one end locked to the operation body and the other end locked to the cover body that biases the cover body forward with respect to the operation body;
The operation body is
An operation unit provided opposite to the front end of the operation body;
An engaging portion formed to face the operation portion in an inward projection,
A leg portion connected to the operation portion and having an elastic force;
A holder for standing the front from the base connecting between the legs, and holding the writing core by inserting the rear end of the writing core;
A holder side spring locking portion that is provided near the front end portion of the holder and locks one end of the coil spring;
The cover body is
A through-hole penetrating the cover body in the front-rear direction so that the writing core can be inserted;
A cover body side spring locking portion for locking the other end of the coil spring;
A driving slope formed in a slope shape so that the engagement portion comes into contact with the operation body by a pressing operation of the operation portion and the cover body moves relatively backward with respect to the operation body;
A restricting portion for restricting forward movement of the cover main body by engaging with the engaging portion;
Writing instrument characterized by having.
前記ガイド手段は、
前記ホルダー側バネ係止部と、前記カバー本体側バネ係止部との間に設けられ、前記ホルダーの前端部付近と、前記ホルダーの前端部付近と対向する前記カバー本体の後端部付近とが摺接することにより形成されることを特徴とする請求項1記載の筆記具。
The guide means includes
Provided between the holder side spring locking portion and the cover main body side spring locking portion, near the front end portion of the holder, and near the rear end portion of the cover body facing the vicinity of the front end portion of the holder, The writing instrument according to claim 1, wherein the writing instrument is formed by sliding contact.
前記駆動斜面の前方に設けられ、前記操作部の押圧状態で前記係合部と係合可能に形成される芯交換用係合部を有することを特徴とする請求項1又は2記載の筆記具。 The writing instrument according to claim 1, further comprising a core replacement engaging portion that is provided in front of the drive slope and is formed so as to be engageable with the engaging portion when the operation portion is pressed.
JP2010178709A 2010-08-09 2010-08-09 Writing instrument Active JP5496815B2 (en)

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JPH07266783A (en) * 1994-03-31 1995-10-17 Nec Corp Writing appliance
JP3057616U (en) * 1998-09-09 1999-06-02 洸晏 黄 Writing implement
JP4331380B2 (en) * 2000-05-08 2009-09-16 株式会社トンボ鉛筆 Simple writing instrument

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