JP4989380B2 - Writing instrument - Google Patents

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JP4989380B2
JP4989380B2 JP2007231965A JP2007231965A JP4989380B2 JP 4989380 B2 JP4989380 B2 JP 4989380B2 JP 2007231965 A JP2007231965 A JP 2007231965A JP 2007231965 A JP2007231965 A JP 2007231965A JP 4989380 B2 JP4989380 B2 JP 4989380B2
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knock member
slit
writing instrument
support portion
clip
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JP2009061698A (en
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之博 月岡
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Zebra Co Ltd
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Description

本発明は、バネ力を伴った開閉操作が可能なクリップを備えた筆記具に関するものである。   The present invention relates to a writing instrument provided with a clip that can be opened and closed with a spring force.

従来、このような分野の技術として、特開２００５−１１１８７６号公報がある。この公報に記載された筆記具は、任意のノック部材(押子)を押し下げることによって、所望のリフィールの先端を軸筒の先端から突出させることができ、他のノック部材を軽く押し下げることによって、軸筒内にリフィールの先端をバネ力により素早く格納することができる。また、この筆記具は、シャープペンシル型のリフィールを有し、このリフィールの後端にノック部材(押子)の先端が圧入され、このノック部材には、略Ｕ字状の板バネを介して開閉自在なクリップが取り付けられている。さらに、軸筒には、ガイド溝の後端で中心軸線方向に延在する支持部が設けられ、ノック部材の後端には、支持部が入り込むスリットが設けられている。そして、クリップを開く際に、指でクリップの後端をバネ力に抗して強く押すので、この力は、ノック部材のスリット内に差し込まれている支持部でも支持される。   Conventionally, there is JP-A-2005-111186 as a technology in such a field. The writing instrument described in this publication can make the tip of the desired refill project from the tip of the shaft cylinder by pushing down an arbitrary knock member (presser), and the shaft by pushing down the other knock member lightly. The tip of the refill can be quickly stored in the cylinder by the spring force. This writing instrument has a mechanical pencil type refill, and the tip of a knock member (presser) is press-fitted to the rear end of the refill, and the knock member is opened and closed via a substantially U-shaped leaf spring. A free clip is attached. Further, the shaft cylinder is provided with a support portion extending in the central axis direction at the rear end of the guide groove, and a slit into which the support portion enters is provided at the rear end of the knock member. When the clip is opened, the rear end of the clip is strongly pressed against the spring force with a finger, and this force is also supported by the support portion inserted into the slit of the knock member.

特開２００５−１１１８７６号公報Japanese Patent Application Laid-Open No. 2005-1111876

このような筆記具のクリップは、螺旋バネの付勢力によって軸線方向に素早く戻すことができるが、螺旋バネのバネ力を強くすると、ノック部材が完全に戻ったときにノック部材が軸筒に当たることによって生じる衝撃、いわゆるバックショックが大きくなる。しかしながら、バックショックを小さくするためにバネ力を弱くするとバックショックの低減は達成されるが、支持部が経時変化によって多少変形すると、クリップが戻ったときに、ノック部材のスリット内に支持部が入り難くなり、クリップを完全に元の位置まで復帰させることができない場合がある。   Such a clip of the writing instrument can be quickly returned in the axial direction by the biasing force of the spiral spring. The impact that occurs, so-called back shock, is increased. However, if the spring force is weakened to reduce the back shock, the back shock can be reduced.However, if the support part is deformed due to aging, when the clip returns, the support part is placed in the slit of the knock member. It may become difficult to enter, and the clip may not be completely returned to its original position.

本発明は、ノック部材の後端に設けられスリット内に、軸筒に設けられた支持部を確実に挿入させるようにした筆記具を提供することを目的とする。   An object of the present invention is to provide a writing instrument in which a support portion provided on a shaft cylinder is reliably inserted into a slit provided at a rear end of a knock member.

本発明に係る筆記具は、軸筒の先端から出没するリフィールと、リフィールの後端に前端が連結されると共に、軸筒に設けられたガイド溝に沿って、軸筒の中心軸線方向にスライド自在なノック部材と、ノック部材にバネを介して連結された開閉自在なクリップと、一端が軸筒に係止されると共に、他端がノック部材に係止されて、ノック部材を復帰させる螺旋バネと、ガイド溝の後端で中心軸線方向に延在する支持部と、ノック部材の後端に設けられて、支持部が入り込むスリットと、を備えた筆記具において、
支持部には、スリット内に挿入可能な抜き差し領域内において、スリットを形成する壁面に接触する接触部と、接触部より一段低くしてスリットの壁面に接触しない非接触部とが設けられていることを特徴とする。 The writing instrument according to the present invention has a refill projecting from the tip of the shaft tube, a front end connected to the rear end of the refill, and is slidable in the central axis direction of the shaft tube along a guide groove provided in the shaft tube. A knock member, an openable / closable clip connected to the knock member via a spring, and a helical spring that has one end locked to the shaft cylinder and the other end locked to the knock member to return the knock member A writing instrument comprising: a support portion extending in the central axis direction at the rear end of the guide groove; and a slit provided at the rear end of the knock member and into which the support portion enters.
The support portion is provided with a contact portion that contacts the wall surface that forms the slit and a non-contact portion that is one step lower than the contact portion and does not contact the wall surface of the slit in the insertion / removal region that can be inserted into the slit. It is characterized by that.

この筆記具に利用されるクリップは、バネ力を伴った開閉操作が可能であり、クリップにバネを介して連結されたノック部材の後端には、支持部が入り込むスリットが設けられ、この支持部には、スリット内に入り込む抜き差し領域内において、スリットを形成する壁面に接触する接触部と、接触部より一段低くしてスリットの壁面に接触しない非接触部とが設けられている。このような支持部の採用によって、スリットの壁面に対する支持部の接触が限定され、ノック部材に対する支持部の接触面積を減らすことができる。これによって、ノック部材が戻る際の抵抗を軽減させることができ、支持部が経時変化によって多少変形しても、ノック部材のスリット内に支持部が入り易くなり、バックショック低減のために螺旋バネのバネ力を弱く設計しても、クリップを確実に且つスムーズに元の位置まで復帰させることができる。   The clip used in this writing instrument can be opened and closed with a spring force, and a slit into which a support part enters is provided at the rear end of the knock member connected to the clip via the spring. Are provided with a contact portion that contacts the wall surface forming the slit and a non-contact portion that is one step lower than the contact portion and does not contact the wall surface of the slit in the insertion / extraction region that enters the slit. By adopting such a support part, the contact of the support part with the wall surface of the slit is limited, and the contact area of the support part with the knock member can be reduced. As a result, the resistance when the knock member returns can be reduced, and even if the support portion is slightly deformed due to changes over time, the support portion easily enters the slit of the knock member. Even if the spring force is designed to be weak, the clip can be reliably and smoothly returned to the original position.

本発明によれば、ノック部材の後端に設けられスリット内に、軸筒に設けられた支持部を確実に挿入させることができる。   According to the present invention, the support portion provided on the shaft tube can be reliably inserted into the slit provided at the rear end of the knock member.

以下、図面を参照しつつ本発明に係る筆記具の好適な実施形態について詳細に説明する。なお、ペン先側を「前方側」として以下説明する。   Hereinafter, preferred embodiments of a writing instrument according to the present invention will be described in detail with reference to the drawings. In the following description, the pen tip side is referred to as “front side”.

図１及び図２に示されるように、多芯筆記具１は、４色のノック式筆記具である。このノック式多芯筆記具１は、４本のボールペン型のリフィール２と、各リフィール２を収容する樹脂製の軸筒４と、軸筒４の中心軸線Ｌ方向にスライド自在な３本の第1のノック部材６と、軸筒４の中心軸線Ｌ方向にスライド自在な第２のノック部材７に取り付けられた開閉式クリップ８と、軸筒４に固定された滑り止め用のグリップ９とを備えている。   As shown in FIGS. 1 and 2, the multi-core writing instrument 1 is a four-color knock-type writing instrument. This knock-type multi-core writing instrument 1 includes four ball-point pen-type refills 2, a resin shaft cylinder 4 that accommodates each refill 2, and three first slides that are slidable in the central axis L direction of the shaft cylinder 4. A knock member 6, an openable clip 8 attached to a second knock member 7 slidable in the direction of the central axis L of the shaft tube 4, and a non-slip grip 9 fixed to the shaft tube 4. ing.

軸筒４は、前軸４ａと後軸４ｂとからなり、前軸４ａの後側に設けられた雄ネジ部と後軸４ｂの前側に設けられた雌ネジ部との螺合によって、前軸４ａと後軸４ｂは連結されている。このように、軸筒４を前軸４ａと後軸４ｂとに二分割することで、前軸４ａを外してリフィール２を容易に交換することができ、前軸４ａと後軸４ｂの材質を異ならせることもできる。   The shaft cylinder 4 is composed of a front shaft 4a and a rear shaft 4b, and the front shaft 4a is screwed by a male screw portion provided on the rear side of the front shaft 4a and a female screw portion provided on the front side of the rear shaft 4b. 4a and the rear shaft 4b are connected. Thus, by dividing the shaft cylinder 4 into the front shaft 4a and the rear shaft 4b, the front shaft 4a can be removed and the refill 2 can be easily replaced, and the materials of the front shaft 4a and the rear shaft 4b can be changed. It can be different.

扁平で細長い形状を有する第１のノック部材６の外側には、指掛け部６ａが形成され、第１のノック部材６の内側（中心軸線Ｌ側）には、略中央から後端に向かって延在するガイド片６ｂが形成されている。そして、このガイド片６ｂの直線的な遊端には、断面三角形状の前側突起６ｃ及び後側突起６ｄが並設されている。また、第２のノック部材７も同様に、ガイド片７ｂ、前側突起７ｃ及び後側突起７ｄが設けられている(図３及び図４参照)。   A finger hook 6a is formed on the outer side of the first knock member 6 having a flat and elongated shape, and extends substantially from the center toward the rear end on the inner side (center axis L side) of the first knock member 6. An existing guide piece 6b is formed. A front protrusion 6c and a rear protrusion 6d having a triangular cross section are arranged in parallel at the linear free end of the guide piece 6b. Similarly, the second knock member 7 is provided with a guide piece 7b, a front projection 7c, and a rear projection 7d (see FIGS. 3 and 4).

さらに、軸筒４の後部には４本のガイド溝１０が形成され、４本のガイド溝１０のうちの３本のガイド溝１０ａに沿って樹脂製の第１のノック部材６のガイド片６ｂが摺動し、各ノック部材６の先端に形成された鏃状のリフィール装填部６ｅは、リフィール２の後端の開口に圧入されている。また、他のガイド溝１０ｂに沿って樹脂製の第２のノック部材７のガイド片７ｂが摺動し、第２のノック部材７には、Ｕ字状の板バネ１２を介してクリップ８が連結され、第２のノック部材７の先端に形成された鏃状のリフィール装填部７ｅは、リフィール２の後端の開口に圧入されている。   Further, four guide grooves 10 are formed in the rear portion of the shaft tube 4, and the guide pieces 6 b of the first knock member 6 made of resin along the three guide grooves 10 a of the four guide grooves 10. The hook-shaped refill loading portion 6e formed at the tip of each knock member 6 is press-fitted into the opening at the rear end of the refill 2. Further, the guide piece 7b of the second knock member 7 made of resin slides along the other guide groove 10b, and the clip 8 is attached to the second knock member 7 via a U-shaped leaf spring 12. The hook-like refill loading portion 7e that is connected and formed at the front end of the second knock member 7 is press-fitted into the opening at the rear end of the refill 2.

さらに、軸筒４内には、第１及び第２のノック部材６，７を復帰させるための４本の螺旋バネ１５が収容され、リフィール２は螺旋バネ１５内に差し込まれている。そして、第１及び第２のノック部材６，７に復帰力を発生させるために、螺旋バネ１５の一端は軸筒４で係止され、螺旋バネ１５の他端は第１及び第２のノック部材６，７の先端に係止されている。   Further, four spiral springs 15 for returning the first and second knock members 6 and 7 are accommodated in the shaft cylinder 4, and the refill 2 is inserted into the spiral spring 15. In order to generate a restoring force on the first and second knock members 6 and 7, one end of the spiral spring 15 is locked by the shaft cylinder 4, and the other end of the spiral spring 15 is the first and second knocks. Locked to the tips of the members 6 and 7.

このような構成の多芯筆記具１では、第１のノック部材６及びクリップ８の何れかを指で押し下げることによって、軸筒４の先端開口４ｄから任意のリフィール２の先端を突出させることができる。そして、軸筒４から選択的に突出させたリフィール２の先端は、他のノック部材６又はクリップ８を指で軽く押し下げることにより軸筒４内に格納することができる。   In the multi-core writing instrument 1 having such a configuration, the tip of an arbitrary refill 2 can be protruded from the tip opening 4d of the shaft tube 4 by pressing down either the first knock member 6 or the clip 8 with a finger. . And the front-end | tip of the refill 2 protruded selectively from the axial cylinder 4 can be stored in the axial cylinder 4 by pushing down the other knock member 6 or the clip 8 lightly with a finger.

筆記具１を使用するにあたって、クリップ８を押し下げると、第２のノック部材７は、軸筒４の中心軸線Ｌ方向に沿って移動する。このとき、第２のノック部材７の後端部に設けられた係合部（図示しない）と、ガイド溝１０に設けられた図示しない係合受部とが係合し、第２のノック部材７が係止され、筆記可能状態となる（図１参照）。この筆記可能状態の解除は、第１のノック部材６の何れかを軽く押し下げることにより行われる。   When the clip 8 is pushed down when using the writing instrument 1, the second knock member 7 moves along the direction of the central axis L of the shaft cylinder 4. At this time, an engagement portion (not shown) provided at the rear end portion of the second knock member 7 and an engagement receiving portion (not shown) provided in the guide groove 10 are engaged, and the second knock member. 7 is locked, and it becomes a writable state (refer FIG. 1). The release of the writable state is performed by lightly pressing any one of the first knock members 6.

また、第１及び第２のノック部材６，７は、後軸４ｂに設けられた摺動面４ｃによって支持されているので、第１のノック部材６の指掛け部６ａ及びクリップ８を指で押しても、軸筒４内にノック部材６，７が落ち込むことが無い(図２参照)。   Further, since the first and second knock members 6 and 7 are supported by the sliding surface 4c provided on the rear shaft 4b, the finger hooking portion 6a and the clip 8 of the first knock member 6 are pushed with a finger. However, the knock members 6 and 7 do not fall into the shaft cylinder 4 (see FIG. 2).

しかしながら、図３〜図５に示されるように、クリップ８は、Ｕ字状の板バネ１２を介して樹脂製の第２のノック部材７に連結され、クリップ８を開操作する時に、クリップ８の基端８ａを指で強く押さえると、この力は第２のノック部材７に印加される。従って、クリップ８の開操作時の負荷に耐えるために、第２のノック部材７は確実に支持される必要がある。   However, as shown in FIGS. 3 to 5, the clip 8 is connected to the second knock member 7 made of resin via the U-shaped leaf spring 12, and the clip 8 is opened when the clip 8 is opened. This force is applied to the second knocking member 7 when the proximal end 8a of this is strongly pressed with a finger. Therefore, in order to endure the load during the opening operation of the clip 8, the second knock member 7 needs to be reliably supported.

そこで、ガイド溝１０ｂの後端には、後軸４ｂと一体成形された支持部２０が設けられ、この支持部２０は、軸筒４の中心軸線Ｌ方向に延在する。この支持部２０は、クリップ８が螺旋バネ１５のバネ力により復帰する際に、第２のノック部材７の後端に設けられたスリット２１内に確実に入り込む必要がある。   Therefore, a support portion 20 integrally formed with the rear shaft 4b is provided at the rear end of the guide groove 10b, and the support portion 20 extends in the direction of the central axis L of the shaft cylinder 4. When the clip 8 is restored by the spring force of the spiral spring 15, the support portion 20 needs to surely enter the slit 21 provided at the rear end of the second knock member 7.

しかしながら、第２のノック部材７の復帰を確実にするために、螺旋バネ１５のバネ力を強くすると、第２のノック部材７が復帰するとき、第２のノック部材７が軸筒４に当たることによって生じる衝撃、いわゆるバックショックが大きくなる。また、螺旋バネ１５のバネ力を弱くするとバックショックを小さくすることができるが、支持部２０が経時変化によって多少変形すると、クリップ８が螺旋バネ１５の付勢力によって復帰した際に、第２のノック部材７のスリット２１内に支持部２０が入り難くなり、クリップ８を完全に元の位置まで復帰させることができない事態が起こり得る。   However, if the spring force of the spiral spring 15 is increased in order to ensure the return of the second knock member 7, the second knock member 7 hits the shaft cylinder 4 when the second knock member 7 returns. The impact caused by the so-called back shock increases. Further, when the spring force of the spiral spring 15 is weakened, the back shock can be reduced. The support portion 20 is difficult to enter the slit 21 of the knock member 7, and a situation in which the clip 8 cannot be completely returned to the original position may occur.

そこで、支持部２０には、スリット２１内に挿入可能な抜き差し領域Ｓ内において、スリット２１を形成するコ字状の壁面２１ａに接触する平坦な接触部２０Ａと、接触部２０Ａより一段低くしてスリット２１の壁面２１ａに接触しない平坦な非接触部２０Ｂとが設けられている。この接触部２０Ａは、ガイド溝１０ｂの後端に隣接し、非接触部２０Ｂは、接触部２０Ａの後端に隣接して、接触部２０Ａより一段低くなっている。   Therefore, the support portion 20 has a flat contact portion 20A that is in contact with the U-shaped wall surface 21a that forms the slit 21 in the insertion / extraction region S that can be inserted into the slit 21, and is made one step lower than the contact portion 20A. A flat non-contact portion 20B that does not contact the wall surface 21a of the slit 21 is provided. The contact portion 20A is adjacent to the rear end of the guide groove 10b, and the non-contact portion 20B is adjacent to the rear end of the contact portion 20A and is one step lower than the contact portion 20A.

このような支持部２０の採用によって、スリット２１の壁面２１ａに対する支持部２０の接触が限定され、第２のノック部材７に対する支持部２０の接触面積を減らすことができる。これによって、第２のノック部材７が戻る際の抵抗を軽減させることができ、支持部２０が経時変化によって多少変形しても、第２のノック部材７のスリット２１内に支持部２０が入り易くなり、バックショック低減のために螺旋バネ１５のバネ力を弱く設計しても、クリップ８を確実に且つスムーズに元の位置まで復帰させることができる。   By adopting such a support portion 20, the contact of the support portion 20 with respect to the wall surface 21 a of the slit 21 is limited, and the contact area of the support portion 20 with respect to the second knock member 7 can be reduced. As a result, the resistance when the second knock member 7 returns can be reduced, and the support portion 20 enters the slit 21 of the second knock member 7 even if the support portion 20 is slightly deformed due to a change with time. The clip 8 can be reliably and smoothly returned to the original position even if the spring force of the spiral spring 15 is designed to be weak for reducing back shock.

さらに、非接触部２０Ｂは、接触部２０Ａより一段低くなっているので、第２のノック部材７のスライド時に、スリット２１の壁面２１ａに接触することがない。従って、この非接触部２０Ｂの表面に凸状のキャビナンバーＮを形成させることができる。このキャビナンバーＮは、クリップ８をスライドさせることで容易に視認することができる。   Furthermore, since the non-contact portion 20B is one step lower than the contact portion 20A, the non-contact portion 20B does not contact the wall surface 21a of the slit 21 when the second knock member 7 slides. Therefore, the convex cavity number N can be formed on the surface of the non-contact portion 20B. The cavity number N can be easily recognized by sliding the clip 8.

本発明は、前述した実施形態に限定されないことは言うまでもない。例えば、接触部２０Ａ及び非接触部２０Ｂを有する支持部２０とスリット２１との関係は、第１のノック部材６に適用されてもよい。   It goes without saying that the present invention is not limited to the embodiment described above. For example, the relationship between the support portion 20 having the contact portion 20 </ b> A and the non-contact portion 20 </ b> B and the slit 21 may be applied to the first knock member 6.

本発明に係る筆記具の一実施形態を示す断面図である。It is sectional drawing which shows one Embodiment of the writing instrument which concerns on this invention. 図１のＩＩ−ＩＩ線に沿う断面図である。It is sectional drawing which follows the II-II line | wire of FIG. 図１に示された筆記具の要部拡大断面図である。It is a principal part expanded sectional view of the writing instrument shown by FIG. 図１に示された筆記具の要部拡大斜視図である。It is a principal part expansion perspective view of the writing instrument shown by FIG. 軸筒の要部拡大斜視図である。It is a principal part expansion perspective view of a shaft cylinder.

符号の説明Explanation of symbols

１…筆記具、２…リフィール、４…軸筒、６…第１のノック部材、７…第２のノック部材、８…クリップ、１０ａ，１０ｂ…ガイド溝、１２…板バネ、１５…螺旋バネ、２０…支持部、２０Ａ…接触部、２０Ｂ…非接触部、２１…スリット、２１ａ…壁面、Ｌ…中心軸線、Ｎ…キャビナンバー、Ｓ…抜き差し領域。   DESCRIPTION OF SYMBOLS 1 ... Writing instrument, 2 ... Refill, 4 ... Shaft cylinder, 6 ... 1st knock member, 7 ... 2nd knock member, 8 ... Clip, 10a, 10b ... Guide groove, 12 ... Leaf spring, 15 ... Spiral spring, DESCRIPTION OF SYMBOLS 20 ... Support part, 20A ... Contact part, 20B ... Non-contact part, 21 ... Slit, 21a ... Wall surface, L ... Center axis, N ... Cavity number, S ... Insertion / extraction area | region.

Claims (1)

軸筒の先端から出没するリフィールと、
前記リフィールの後端に前端が連結されると共に、前記軸筒に設けられたガイド溝に沿って、前記軸筒の中心軸線方向にスライド自在なノック部材と、
前記ノック部材にバネを介して連結された開閉自在なクリップと、
一端が前記軸筒に係止されると共に、他端が前記ノック部材に係止されて、前記ノック部材を復帰させる螺旋バネと、
前記ガイド溝の後端で前記中心軸線方向に延在する支持部と、
前記ノック部材の後端に設けられて、前記支持部が入り込むスリットと、を備えた筆記具において、
前記支持部には、前記スリット内に挿入可能な抜き差し領域内において、前記スリットを形成する壁面に接触する接触部と、前記接触部より一段低くして前記スリットの前記壁面に接触しない非接触部とが設けられていることを特徴とする筆記具。 A refill that appears from the tip of the barrel,
A front end is connected to a rear end of the refill, and a knock member that is slidable in a central axis direction of the shaft tube along a guide groove provided in the shaft tube,
An openable / closable clip connected to the knock member via a spring;
A spiral spring having one end locked to the shaft cylinder and the other end locked to the knock member to return the knock member;
A support portion extending in the central axis direction at the rear end of the guide groove;
In a writing instrument provided with a slit that is provided at a rear end of the knock member and into which the support portion enters,
The support portion includes a contact portion that contacts a wall surface that forms the slit, and a non-contact portion that is one step lower than the contact portion and does not contact the wall surface of the slit in an insertion / removal region that can be inserted into the slit. Writing instrument characterized by being provided with.
JP2007231965A 2007-09-06 2007-09-06 Writing instrument Active JP4989380B2 (en)

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JP4989380B2 true JP4989380B2 (en) 2012-08-01

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3320388B2 (en) * 1999-10-21 2002-09-03 株式会社パイロット Multi-core writing instrument
JP3669684B2 (en) * 2000-06-30 2005-07-13 株式会社パイロットコーポレーション Sliding composite writing instrument
JP4472964B2 (en) * 2003-10-09 2010-06-02 ゼブラ株式会社 Writing instrument
JP2005335148A (en) * 2004-05-26 2005-12-08 Pilot Corporation Multi-refill writing instrument

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