JP6707375B2 - Writing instrument - Google Patents

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JP6707375B2
JP6707375B2 JP2016057536A JP2016057536A JP6707375B2 JP 6707375 B2 JP6707375 B2 JP 6707375B2 JP 2016057536 A JP2016057536 A JP 2016057536A JP 2016057536 A JP2016057536 A JP 2016057536A JP 6707375 B2 JP6707375 B2 JP 6707375B2
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grip member
region
thickness
barrel
grip
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JP2017170701A (en
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本 雅 信 山
本 雅 信 山
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Pilot Corp KK
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Pilot Corp KK
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Priority to JP2016057536A priority Critical patent/JP6707375B2/en
Priority to CN201780019871.XA priority patent/CN108883655B/en
Priority to PCT/JP2017/010977 priority patent/WO2017164131A1/en
Priority to KR1020187025954A priority patent/KR102184980B1/en
Priority to TW106109485A priority patent/TWI636900B/en
Publication of JP2017170701A publication Critical patent/JP2017170701A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
    • B43K23/008—Holders comprising finger grips

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  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Description

本発明は、筆記具に関する。 The present invention relates to a writing instrument.

従来より、ゴム等の弾力を有するグリップ部材によって軸筒の外面が取り囲まれた筆記具（例えば、特許第４０４３３０５号公報（特許文献１））が知られている。グリップ部材は、筆記具の使用者が当該筆記具を把持した際に、その弾力によって当該使用者の指に加わる力を吸収して疲労を低減させ、更に、軸筒と指との間に大きな摩擦力を提供して使用者の指が軸筒に対して不所望に滑ってしまうことを防止する。これらのことによって、筆記具の握り心地及び書き心地が向上されている。 BACKGROUND ART Conventionally, there is known a writing instrument (for example, Japanese Patent No. 4043305 (Patent Document 1)) in which an outer surface of a shaft cylinder is surrounded by a grip member having elasticity such as rubber. The grip member absorbs the force applied to the user's finger by its elasticity when the user of the writing tool grips the writing tool to reduce fatigue, and further, a large frictional force between the barrel and the finger. To prevent the user's finger from undesirably slipping on the barrel. By these, the gripping comfort and writing comfort of the writing instrument are improved.

ところで、グリップ部材の弾力がどの程度であれば当該グリップ部材を有する筆記具の握り心地を良いと感じるかは、使用者の好みによって異なる。すなわち、グリップ部材が軟らかい方が握り心地が良いと感じる使用者もいるし、グリップ部材が硬い方が握り心地が良いと感じる使用者もいる。このため、多くの使用者にとって握り心地が良いと感じるグリップ部材を有する筆記具の開発が望まれてはいたが、その実現は困難であった。 By the way, how much elasticity of the grip member makes the writing instrument having the grip member feel comfortable to grip depends on the preference of the user. That is, some users feel that the grip member is softer and more comfortable to grip, and some users feel that the harder grip member is more comfortable to grip. Therefore, it has been desired to develop a writing instrument having a grip member that many users feel comfortable to grip, but it has been difficult to realize it.

特許第４０４３３０５号公報Japanese Patent No. 4043305

本件発明者は鋭意検討を重ねた結果、グリップ部材に比較的軟らかい握り心地を提供する領域と比較的硬い握り心地を提供する領域とを設けることによって、前述の問題を解決し得ることを知見した。 As a result of intensive studies, the inventors of the present invention have found that the above-mentioned problem can be solved by providing a grip member with a region providing a relatively soft grip comfort and a region providing a relatively hard grip comfort. ..

本発明は、以上の知見に基づいている。すなわち、本発明の目的は、多くの使用者にとって握り心地が良いと感じるグリップ部材を有する筆記具を提供することである。 The present invention is based on the above findings. That is, an object of the present invention is to provide a writing instrument having a grip member that many users feel comfortable to grip.

本発明の筆記具は、軸筒と、
前記軸筒を周方向に取り囲むグリップ部材と、を備え、
前記グリップ部材の肉厚は、前記周方向に沿って変動し、
前記軸筒の肉厚は、前記周方向に沿って変動し、
前記グリップ部材の肉厚が大きい領域は、前記軸筒の肉厚が小さい領域を取り囲み、
前記グリップ部材の肉厚が小さい領域は、前記軸筒の肉厚が大きい領域を取り囲む。 The writing instrument of the present invention includes a shaft cylinder,
A grip member surrounding the shaft cylinder in the circumferential direction,
The thickness of the grip member varies along the circumferential direction,
The wall thickness of the barrel varies along the circumferential direction,
A region where the wall thickness of the grip member is large surrounds a region where the wall thickness of the barrel is small,
The region where the wall thickness of the grip member is small surrounds the region where the wall thickness of the barrel is large.

本発明によれば、グリップ部材の肉厚が大きい領域において使用者に軟らかい握り心地が提供され、グリップ部材の肉厚が小さい領域において使用者に硬い握り心地が提供されるため、多くの使用者にとって握り心地が良いと感じるグリップ部材を有する筆記具を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, a soft grip feeling is provided to a user in the area|region where the thickness of a grip member is large, and a hard grip feeling is provided to a user in the area|region where the thickness of a grip member is small, so that many users can use it. It is possible to provide a writing instrument having a grip member that feels comfortable to grip.

好ましくは、前記軸筒の内面は、横断面が略円形である。この場合、軸筒が当該軸筒内に収容されている筆記体と干渉することが無く、筆記具の組立も容易である。 Preferably, the inner surface of the barrel has a substantially circular cross section. In this case, the barrel does not interfere with the writing body housed in the barrel, and the writing tool can be easily assembled.

また、好ましくは、前記グリップ部材の外面は、横断面が略円形である。この場合、使用者は、違和感無く筆記具を把持することができる。 Also, preferably, the outer surface of the grip member has a substantially circular cross section. In this case, the user can hold the writing instrument without feeling uncomfortable.

好ましくは、前記グリップ部材によって取り囲まれている前記軸筒の外面は、面取り部を有している。この面取り部は、軸筒の肉厚が小さい領域に対応している。この場合、グリップ部材を介して面取り部に対応する領域が把持されると当該グリップ部材の肉厚が大きい領域が圧縮変形されるため、面取り部が設けられていない領域、すなわちグリップ部材の肉厚が小さい領域が把持される場合と比較してより軟らかい握り心地が提供され得る。更に、面取り部とグリップ部材の肉厚が大きい領域とが係合して軸筒に対するグリップ部材の不所望な相対回転を防止することができる。 Preferably, the outer surface of the barrel surrounded by the grip member has a chamfer. This chamfered portion corresponds to a region where the wall thickness of the barrel is small. In this case, when the region corresponding to the chamfered portion is gripped via the grip member, the region where the thickness of the grip member is large is compressed and deformed, so that the region where the chamfered portion is not provided, that is, the thickness of the grip member. A softer grip can be provided compared to the case where a small area is gripped. Further, the chamfered portion and the region of the grip member having a large thickness are engaged with each other to prevent undesired relative rotation of the grip member with respect to the barrel.

より好ましくは、前記面取り部は、前記軸筒の周方向の３箇所に等間隔で設けられている。この場合、筆記具を把持する３本の指（親指、人差し指及び中指）がグリップ部材に接触する位置に軸筒の面取り部及びグリップ部材の肉厚が大きい領域を位置付けることが可能である。すなわち、グリップ部材の肉厚が大きい領域、すなわち軟らかい握り心地を提供する領域を、効果的に配置することができる。 More preferably, the chamfered portions are provided at three positions in the circumferential direction of the shaft cylinder at equal intervals. In this case, it is possible to position the chamfered portion of the barrel and the region where the thickness of the grip member is large at the position where the three fingers (thumb, index finger, and middle finger) holding the writing instrument contact the grip member. That is, it is possible to effectively arrange a region where the thickness of the grip member is large, that is, a region which provides a soft grip feeling.

本発明によれば、グリップ部材の肉厚が大きい領域において使用者に軟らかい握り心地を提供し、グリップ部材の肉厚が小さい領域において使用者に硬い握り心地を提供するため、多くの使用者にとって握り心地が良いと感じるグリップ部材を有する筆記具を提供することができる。 According to the present invention, a soft grip feeling is provided to a user in a region where the thickness of the grip member is large, and a hard grip comfort is provided to a user in a region where the thickness of the grip member is small. It is possible to provide a writing instrument having a grip member that feels comfortable to grip.

本発明の一実施の形態による筆記具を示す概略平面図である。It is a schematic plan view showing a writing instrument according to an embodiment of the present invention. 図１Ａの筆記具を示す概略側面図であって、筆記体の筆記部が軸筒の先端から繰り出された状態を示す概略側面図である。FIG. 1B is a schematic side view showing the writing instrument of FIG. 1A, and is a schematic side view showing a state where the writing part of the writing body is extended from the tip of the barrel. 図１Ａの筆記具を示す概略縦断面図である。It is a schematic longitudinal cross-sectional view showing the writing instrument of FIG. 1A. 図１Ａの筆記具の前軸とグリップ部材とが組み付けられた状態を示す部分的な概略斜視図である。FIG. 1B is a partial schematic perspective view showing a state where the front shaft and the grip member of the writing instrument of FIG. 1A are assembled. 図１Ａの筆記具の前軸を示す概略斜視図である。It is a schematic perspective view which shows the front shaft of the writing instrument of FIG. 1A. 図３の前軸及びグリップ部材の概略縦断面図である。It is a schematic longitudinal cross-sectional view of the front shaft and the grip member of FIG. 図３の前軸及びグリップ部材の概略横断面図である。FIG. 4 is a schematic cross-sectional view of the front shaft and the grip member of FIG. 3. 図１ＡのＶＩＩ−ＶＩＩ線断面図であり、軸筒内の筆記体は省略されている。It is the VII-VII sectional view taken on the line of FIG. 1A, and the cursive body in a barrel is abbreviate|omitted. 図１ＡのＶＩＩＩ−ＶＩＩＩ線断面図であり、軸筒内の筆記体は省略されている。It is the VIII-VIII sectional view taken on the line of FIG. 1A, and the cursive body in a barrel is abbreviate|omitted. 図１ＡのＩＸ−ＩＸ線断面図であり、軸筒内の筆記体は省略されている。It is the IX-IX sectional view taken on the line of FIG. 1A, and the cursive body in a barrel is abbreviate|omitted.

以下に、添付の図面を参照して本発明の一実施の形態を詳細に説明する。 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

図１Ａは、本発明の一実施の形態による筆記具１００を示す概略平面図であり、図１Ｂは、図１Ａの筆記具１００を示す概略側面図であって、筆記体５０の筆記部５１が軸筒１０の先端から繰り出された状態を示す概略側面図である。図２は、図１Ａの筆記具１００を示す概略縦断面図である。 FIG. 1A is a schematic plan view showing a writing instrument 100 according to an embodiment of the present invention, and FIG. 1B is a schematic side view showing the writing instrument 100 of FIG. 1A, in which a writing portion 51 of a writing body 50 is a barrel. It is a schematic side view which shows the state extended from the front-end|tip of 10. FIG. 2 is a schematic vertical sectional view showing the writing instrument 100 of FIG. 1A.

図１Ａ、図１Ｂ及び図２に示すように、本実施の形態の筆記具１００は、前軸２０及び前軸２０に例えば乗り越し嵌合によって連結された後軸３０を有する軸筒１０と、前軸２０の外面を周方向に取り囲むグリップ部材４０と、軸筒１０内に出没可能に収容された筆記体５０と、を備えている。一例として、前軸２０及び後軸３０は樹脂製であり、グリップ部材４０はゴム製である。図示された例において、筆記具１００はボールペンである。 As shown in FIGS. 1A, 1B, and 2, the writing instrument 100 according to the present embodiment includes a front barrel 20 and a barrel 10 having a rear barrel 30 connected to the front barrel 20 by, for example, a crossover fit, and a front barrel. A grip member 40 surrounding the outer surface of 20 in the circumferential direction, and a writing body 50 housed in the barrel 10 so as to be retractable and retractable. As an example, the front shaft 20 and the rear shaft 30 are made of resin, and the grip member 40 is made of rubber. In the illustrated example, the writing instrument 100 is a ballpoint pen.

軸筒１０（前軸２０）は、前端に筆記体５０の筆記部５１が突出可能な第１開口部２１が形成されている。また、軸筒１０（前軸２０）は、前方領域の内面に第１係合部２２を有している。筆記体５０は、前軸２０の第１係合部２２より後方（図２における右方）の外面に第２係合部５２を有している。そして、これら第１及び第２係合部２２、５２の間にコイルバネ６０が圧縮状態で配置されている。このコイルバネ６０は、筆記体５０を軸筒１０の軸方向後方（図１Ａ乃至図２における右方）に付勢するためのものである。筆記体５０の後端５０ｅは、後軸３０内の後方領域に設けられた回転カム２３に当接して軸筒１０の軸方向後方への相対移動が規制されていて、これにより、コイルバネ６０の圧縮状態が維持されるようになっている。 The barrel 10 (front shaft 20) has a first opening 21 formed at the front end so that the writing portion 51 of the writing body 50 can project. Further, the barrel 10 (front shaft 20) has a first engaging portion 22 on the inner surface of the front region. The cursive body 50 has a second engaging portion 52 on the outer surface of the front shaft 20 rearward (to the right in FIG. 2) from the first engaging portion 22. The coil spring 60 is arranged in a compressed state between the first and second engaging portions 22 and 52. The coil spring 60 is for urging the writing body 50 axially rearward (rightward in FIGS. 1A and 2) of the barrel 10. The rear end 50e of the cursive body 50 abuts on a rotary cam 23 provided in a rear region of the rear shaft 30 to restrict relative movement of the axial cylinder 10 rearward in the axial direction. The compressed state is maintained.

ノック部材７０は、筆記体５０をコイルバネ６０の付勢力に対抗して筆記体５０を前軸２０の第１開口部２１から突出させるための部材である。このノック部材７０は、筆記体５０を軸筒１０の軸方向前方（図１Ａ乃至図２における左方）に移動させて当該筆記体５０の筆記部５１が第１開口部２１から外方に突出した状態に対応する突出位置（図１Ｂ参照）と、筆記体５０の筆記部５１が前軸２０内に没入した状態に対応する没入位置（図１Ａ参照）と、の間を移動可能となっている。図１Ａ及び図１Ｂに示すように、ノック部材７０の後端７０ｅは、突出位置及び没入位置の双方において後軸３０の後端の第２開口部３１から外方に突出している。 The knock member 70 is a member for causing the writing body 50 to project from the first opening portion 21 of the front shaft 20 against the biasing force of the coil spring 60. The knock member 70 moves the writing body 50 axially forward of the barrel 10 (leftward in FIGS. 1A to 2) so that the writing portion 51 of the writing body 50 projects outward from the first opening 21. It is possible to move between a protruding position (see FIG. 1B) corresponding to the above-described state and an immersion position (see FIG. 1A) corresponding to a state in which the writing unit 51 of the writing body 50 is immersed in the front shaft 20. There is. As shown in FIGS. 1A and 1B, the rear end 70e of the knock member 70 projects outward from the second opening 31 at the rear end of the rear shaft 30 at both the projecting position and the retracted position.

なお、本実施の形態の筆記具１００は、軸筒１０内に筆記体５０の筆記芯５１の出没切替のための回転カム２３と当該回転カム２３に係合するカム溝（図示せず）を有するカム機構が設けられている。後に詳述されるが、筆記体５０の筆記部５１が前軸２０内に没入した状態（図１Ａ参照）でノック部材７０が押圧操作（ノック操作）されると、回転カム２３がカム溝に沿って摺動し、筆記体５０の筆記部５１が前軸２０の第１開口部２１から外方へ突出され、更に、カム機構の作用によって回転カム２３が回転されることによって、軸筒１０の軸方向後方への筆記体５０の相対移動が禁止され、押圧操作の終了後もこの突出状態が維持されるようになっている。また、この突出状態で再度ノック部材７０が押圧操作（ノック操作）されると、カム機構の作用によって軸筒１０の軸方向後方への筆記体５０の相対移動が許容され、コイルバネ６０の付勢力によって筆記体５０及びノック部材７０が軸方向後方に押し戻されて初期状態が復帰されるようになっている。 In addition, the writing instrument 100 of the present embodiment has a rotary cam 23 and a cam groove (not shown) that engages with the rotary cam 23 in the barrel 10 for switching the writing core 51 of the writing body 50 in and out. A cam mechanism is provided. As will be described in detail later, when the knocking member 70 is pressed (knocking operation) in a state in which the writing unit 51 of the writing body 50 is immersed in the front shaft 20 (see FIG. 1A), the rotary cam 23 moves into the cam groove. By sliding along, the writing part 51 of the writing body 50 is projected outward from the first opening 21 of the front shaft 20, and further, the rotary cam 23 is rotated by the action of the cam mechanism, whereby the barrel 10 The relative movement of the writing body 50 in the axial rearward direction is prohibited, and the protruding state is maintained even after the pressing operation is completed. When the knock member 70 is pressed (knocked) again in this projecting state, the cam mechanism allows the relative movement of the writing body 50 axially rearward of the barrel 10 and the biasing force of the coil spring 60. Thus, the writing body 50 and the knock member 70 are pushed back axially rearward to restore the initial state.

次に、図３は、図１Ａの筆記具１００の前軸２０とグリップ部材４０とが組み付けられた状態を示す部分的な概略斜視図である。図４は、図１Ａの筆記具１００の前軸２０を示す概略斜視図であり、図５は、図３の前軸２０及びグリップ部材４０を示す概略縦断面図であり、図６は、図３の前軸２０及びグリップ部材４０を示す概略横断面図である。 Next, FIG. 3 is a partial schematic perspective view showing a state in which the front shaft 20 and the grip member 40 of the writing instrument 100 of FIG. 1A are assembled. 4 is a schematic perspective view showing the front shaft 20 of the writing instrument 100 of FIG. 1A, FIG. 5 is a schematic vertical sectional view showing the front shaft 20 and the grip member 40 of FIG. 3, and FIG. 4 is a schematic cross-sectional view showing the front shaft 20 and a grip member 40 of FIG.

図３に示すように、本実施の形態の筆記具１００の前軸２０の外面は、グリップ部材４０で取り囲まれている。グリップ部材４０は、例えば２色成形によって前軸２０と共に製造され得る。グリップ部材４０の外面には軸方向に等間隔で延びる１６本の軸方向に延びる一方の溝４１と一方の溝から直交方向に等間隔で延びる１８本の他方の溝４２とがそれぞれ形成されている。すなわち、本実施の形態のグリップ部材４０の外面には、四方を一方の溝４１及び他方の溝４２で囲まれた複数の矩形領域（ブロック４０ｂ）に区画されている。 As shown in FIG. 3, the outer surface of the front shaft 20 of the writing instrument 100 of the present embodiment is surrounded by the grip member 40. The grip member 40 may be manufactured with the front shaft 20 by, for example, two-color molding. The outer surface of the grip member 40 is provided with 16 axially extending grooves 41 extending at equal intervals in the axial direction and 18 other grooves 42 extending at equal intervals in the orthogonal direction from the one groove. There is. That is, the outer surface of the grip member 40 of the present embodiment is divided into a plurality of rectangular regions (blocks 40b) surrounded by one groove 41 and the other groove 42 on all sides.

図４及び図５に示すように、本実施の形態の前軸２０は、グリップ部材４０によって取り囲まれていない領域である前端領域２４と、グリップ部材４０によって取り囲まれる被覆領域２５と、を有している。前端領域２４は、横断面が円環状であり、前方（図４における左下方）に向かって先細りとなっている。前端領域２４の後端の外径は、被覆領域２５の前端の外径よりもグリップ部材４０の厚み分だけ大径となっており、被覆領域２５がグリップ部材４０で取り囲まれた状態において前端領域２４の後端とグリップ部材４０の前端との間に段差が生じないようになっている。 As shown in FIGS. 4 and 5, the front shaft 20 of the present embodiment has a front end region 24 that is a region that is not surrounded by the grip member 40, and a covering region 25 that is surrounded by the grip member 40. ing. The front end region 24 has an annular cross section and tapers toward the front (lower left in FIG. 4). The outer diameter of the rear end of the front end region 24 is larger than the outer diameter of the front end of the covering region 25 by the thickness of the grip member 40, and the front end region is surrounded by the grip member 40. A step is not formed between the rear end of 24 and the front end of the grip member 40.

また、図４及び図５に示すように、被覆領域２５の外面は、面取り部２６を有している。面取り部２６は、円筒状の被覆領域２５の外面が抉られて形成された長円状の領域である。図４には２つの面取り部２６のみが示されているが、実際には、面取り部２６は、前軸２０の周方向の３箇所に等間隔で設けられている。図５においては、前軸２０の被覆領域２５の断面が視認されるが、上方部分の断面２５ａには面取り部２６が現れておらず、当該被覆領域２５の肉厚が軸方向において一定である。一方、下方部分の断面２５ｂには面取り部２６が現れており、当該前軸２０の肉厚が軸方向において変動（面取り部２６において減少）している。 Further, as shown in FIGS. 4 and 5, the outer surface of the covering region 25 has a chamfered portion 26. The chamfered portion 26 is an oval-shaped region formed by carving the outer surface of the cylindrical covering region 25. Although only two chamfered portions 26 are shown in FIG. 4, the chamfered portions 26 are actually provided at three positions in the circumferential direction of the front shaft 20 at equal intervals. In FIG. 5, the cross section of the covering region 25 of the front shaft 20 is visually recognized, but the chamfered portion 26 does not appear in the cross section 25a of the upper portion, and the wall thickness of the covering region 25 is constant in the axial direction. .. On the other hand, the chamfered portion 26 appears in the cross section 25b of the lower portion, and the wall thickness of the front shaft 20 varies (decreases in the chamfered portion 26) in the axial direction.

図６に示すように、前軸２０の内面は、横断面が略円形である。また、グリップ部材４０の外面は、横断面が略円形である。ここで、略円形であるとは、前軸２０の内面に存在する凹凸を無視した場合に当該内面の輪郭線が円形であること、あるいは、グリップ部材４０の外面に形成された一方の溝４１及び他方の溝４２による凹部を無視した各ブロック４０ｂの輪郭線（稜線）が円形であること、を意味している。また、図６に示すように、グリップ部材４０の内面及び前軸２０の被覆領域２５の外面、とりわけ、グリップ部材４０の内面及び被覆領域２５に設けられた面取り部２６が、隙間無く接触している。 As shown in FIG. 6, the inner surface of the front shaft 20 has a substantially circular cross section. The outer surface of the grip member 40 has a substantially circular cross section. Here, “substantially circular” means that the contour line of the inner surface of the front shaft 20 is circular when the unevenness existing on the inner surface of the front shaft 20 is ignored, or one groove 41 formed on the outer surface of the grip member 40. And that the contour line (ridge line) of each block 40b ignoring the concave portion formed by the other groove 42 is circular. Further, as shown in FIG. 6, the inner surface of the grip member 40 and the outer surface of the covering region 25 of the front shaft 20, particularly, the chamfered portion 26 provided in the inner surface of the grip member 40 and the covering region 25 are in contact with each other without a gap. There is.

すなわち、面取り部２６に対応する部位において、グリップ部材４０の肉厚は変動している。更に、前軸２０の被覆領域２５の肉厚は、面取り部２６の存在によって周方向に沿って変動している。そして、グリップ部材４０の肉厚が大きい領域４３は、前軸２０の肉厚が小さい領域、すなわち面取り部２６の外面を取り囲んでおり、グリップ部材４０の肉厚が小さい領域４４は、前軸２０の肉厚が大きい領域２７の外面を取り囲んでいる。 That is, the thickness of the grip member 40 varies in the portion corresponding to the chamfered portion 26. Furthermore, the thickness of the covering region 25 of the front shaft 20 varies along the circumferential direction due to the presence of the chamfered portion 26. The region 43 having a large thickness of the grip member 40 surrounds the region having a small thickness of the front shaft 20, that is, the outer surface of the chamfered portion 26, and the region 44 having a small thickness of the grip member 40 corresponds to the front shaft 20. Surrounds the outer surface of the region 27 having a large wall thickness.

ここで、前軸２０及びグリップ部材４０の構成について、図７乃至図９を参照して更に詳細に説明する。図７は、図１ＡのＶＩＩ−ＶＩＩ線断面図であり、図８は、図１ＡのＶＩＩＩ−ＶＩＩＩ線断面図であり、図９は、図１ＡのＩＸ−ＩＸ線断面図である。図７乃至図９において、前軸２０内の筆記体５０の図示は省略されている。 Here, the configurations of the front shaft 20 and the grip member 40 will be described in more detail with reference to FIGS. 7 to 9. 7 is a sectional view taken along line VII-VII of FIG. 1A, FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 1A, and FIG. 9 is a sectional view taken along line IX-IX of FIG. 1A. 7 to 9, the writing body 50 in the front shaft 20 is not shown.

図７及び図８に示すように、図１ＡのＶＩＩ−ＶＩＩ線の位置及びＶＩＩＩ−ＶＩＩＩ線の位置では、前軸２０の被覆領域２５に面取り部２６が存在しており、前軸２０の肉厚が小さい領域である面取り部２６と前軸２０の肉厚が大きい領域２７とが周方向に等間隔で交互に存在している。そして、前述の通り、グリップ部材４０の肉厚が大きい領域４３は面取り部２６の外面を取り囲んでおり、グリップ部材４０の肉厚が小さい領域４４は前軸２０の肉厚が大きい領域２７の外面を取り囲んでいる。 As shown in FIGS. 7 and 8, at the position of the VII-VII line and the position of the VIII-VIII line of FIG. 1A, the chamfered portion 26 exists in the covering region 25 of the front shaft 20, and the meat of the front shaft 20 is present. The chamfered portion 26, which is a region having a small thickness, and the region 27, which has a large thickness of the front shaft 20, are alternately present at equal intervals in the circumferential direction. Then, as described above, the region 43 having a large thickness of the grip member 40 surrounds the outer surface of the chamfered portion 26, and the region 44 having a small thickness of the grip member 40 is the outer surface of the region 27 having a large thickness of the front shaft 20. Surrounds.

また、図７に示すように、グリップ部材４０の外面に形成されたブロック４０ｂ（矩形領域）は、その肉厚が変動している。具体的には、ブロック４０ｂは、グリップ部材４０の肉厚が大きい領域４３においてブロック４０ｂの肉厚が大きく（厚さｄ１）、グリップ部材４０の肉厚が小さい領域４４においてブロック４０ｂの肉厚が小さい（厚さｄ２）。このようなブロック４０ｂの厚さの変動は、図８において特に顕著である。図８に対応する図１ＡのＶＩＩＩ−ＶＩＩＩ線は、面取り部２６の厚さが最も大きく周方向の幅が最も大きい位置に対応している。このため、図８の面取り部２６は前軸２０の肉厚が最も小さく、当該面取り部２６の外面を取り囲むグリップ部材４０は肉厚が最も大きい。図８に示すように、グリップ部材４０の肉厚が大きい領域４３において、ブロック４０ｂの最大厚さはｄ１’（＞ｄ１）である。一方、図８のグリップ部材４０の肉厚が小さい領域４４において、ブロック４０ｂの最大厚さはｄ２であり、図７の場合と略同様である。 Further, as shown in FIG. 7, the thickness of the block 40b (rectangular region) formed on the outer surface of the grip member 40 varies. Specifically, in the block 40b, in the region 43 where the thickness of the grip member 40 is large, the thickness of the block 40b is large (thickness d1), and in the region 44 where the thickness of the grip member 40 is small, the thickness of the block 40b is large. Small (thickness d2). Such a variation in the thickness of the block 40b is particularly remarkable in FIG. The line VIII-VIII in FIG. 1A corresponding to FIG. 8 corresponds to the position where the chamfered portion 26 has the largest thickness and the circumferential width is the largest. Therefore, the chamfered portion 26 of FIG. 8 has the smallest wall thickness of the front shaft 20, and the grip member 40 surrounding the outer surface of the chamfered portion 26 has the largest wall thickness. As shown in FIG. 8, in the region 43 where the thickness of the grip member 40 is large, the maximum thickness of the block 40b is d1' (>d1). On the other hand, in the region 44 where the thickness of the grip member 40 in FIG. 8 is small, the maximum thickness of the block 40b is d2, which is substantially the same as in the case of FIG.

更に、図７及び図８に示すように、グリップ部材４０は、軸方向に延びる一方の溝４１及び一方の溝４１から直交方向に延びる他方の溝４２が形成されている外方領域４５と、一方の溝４１及び他方の溝４２が形成されていない内方領域４６（外方領域４５よりも径方向内側の領域）と、を有している。内方領域４６は、肉厚が大きい内方領域４６ａと肉厚が小さい内方領域４６ｂとを有している。そして、グリップ部材４０の肉厚が大きい領域４３は、肉厚が大きい内方領域４６ａに対応しており、グリップ部材４０の肉厚が小さい領域４４は、肉厚が小さい内方領域４６ａに対応している。ここで、「対応している」とは、グリップ部材４０の周方向において略同じ位置に存在していることを意味している。 Further, as shown in FIGS. 7 and 8, the grip member 40 includes an outer region 45 in which one groove 41 extending in the axial direction and the other groove 42 extending in the orthogonal direction from the one groove 41 are formed. It has an inner region 46 (region radially inner than the outer region 45) in which one groove 41 and the other groove 42 are not formed. The inner region 46 has an inner region 46a having a large wall thickness and an inner region 46b having a small wall thickness. The region 43 having a large wall thickness of the grip member 40 corresponds to the inner region 46a having a large wall thickness, and the region 44 having a small wall thickness of the grip member 40 corresponds to the inner region 46a having a small wall thickness. is doing. Here, "corresponding" means that the grip members 40 are present at substantially the same position in the circumferential direction.

一方、図９に示すように、前軸２０の被覆領域２５のうち面取り部２６よりも後方の領域においては、前軸２０の肉厚は一定であり、グリップ部材４０の肉厚も一定である。更に、ブロック４０ｂの厚さも一定である。 On the other hand, as shown in FIG. 9, in the area behind the chamfered portion 26 in the covering area 25 of the front shaft 20, the thickness of the front shaft 20 is constant and the thickness of the grip member 40 is also constant. .. Furthermore, the thickness of the block 40b is also constant.

次に、本発明の筆記具１００の作用について説明する。 Next, the operation of the writing instrument 100 of the present invention will be described.

まず、使用者によってノック部材７０が軸筒１０に対して押圧操作（ノック操作）される。これにより、筆記体５０は、コイルバネ６０を圧縮しつつ軸筒１０の軸方向前方に相対移動し、筆記体５０の筆記部５１が前軸２０の前端の開口部２１から外方に露出する。この相対移動時に、筆記体５０は、カム機構２３によって軸筒１０の軸方向後方への相対移動が不可能とされ、押圧操作（ノック操作）を終了しても筆記部５１の突出状態が維持される。そして、使用者によってグリップ部材４０が把持され、紙面等の筆記対象面に筆記が行われる。 First, the user presses (knocks) the knock member 70 with respect to the barrel 10. As a result, the writing body 50 relatively moves forward in the axial direction of the barrel 10 while compressing the coil spring 60, and the writing portion 51 of the writing body 50 is exposed to the outside from the opening 21 at the front end of the front shaft 20. During this relative movement, the writing body 50 is prevented from moving relative to the axial direction rearward of the barrel 10 by the cam mechanism 23, and the writing portion 51 maintains the protruding state even after the pressing operation (knock operation) is completed. To be done. Then, the grip member 40 is gripped by the user, and writing is performed on a writing target surface such as a paper surface.

本実施の形態のグリップ部材４０は、使用者によって把持された際に、当該使用者の指が押し当てられる領域に応じて異なる握り心地を提供する。具体的には、グリップ部材４０の肉厚が大きい領域４３に使用者の指が押し当てられた場合には、当該使用者に軟らかい握り心地を提供する。その一方、グリップ部材４０の肉厚が小さい領域４４に使用者の指が押し当てられた場合には、当該使用者に硬い握り心地を提供する。前述の通り、グリップ部材４０の肉厚が大きい領域４３とグリップ部材４０の肉厚が小さい領域４４とは、周方向に交互に等間隔で３箇所ずつ配置されているため、使用者のある指（例えば親指）がグリップ部材４０の肉厚が大きい領域４３に押し当てられると、通常、他の指（例えば人差し指及び中指）も残り２箇所の肉厚が大きい領域４３に押し当てられる。同様に、使用者のある指（例えば親指）がグリップ部材４０の肉厚が小さい領域４４に押し当てられると、通常は他の指（例えば人差し指及び中指）も残り２箇所の肉厚が小さい領域４４に押し当てられる。 When gripped by the user, the grip member 40 of the present embodiment provides different gripping comfort depending on the area on which the user's finger is pressed. Specifically, when the user's finger is pressed against the thick region 43 of the grip member 40, the user is provided with a soft grip. On the other hand, when the user's finger is pressed against the region 44 having a small thickness of the grip member 40, the user is provided with a firm grip. As described above, since the regions 43 of the grip member 40 having a large wall thickness and the regions 44 of the grip member 40 having a small wall thickness are alternately arranged in the circumferential direction at three locations at equal intervals, the fingers of the user can be used. When the (thumb, for example) is pressed against the large-thickness region 43 of the grip member 40, other fingers (for example, the index finger and the middle finger) are also normally pressed against the remaining two large-thickness regions 43. Similarly, when a certain finger (for example, thumb) of the user is pressed against the thin-walled region 44 of the grip member 40, the other fingers (for example, the index finger and the middle finger) usually have two remaining thin-walled regions. It is pressed against 44.

この把持の際、グリップ部材４０は、使用者の指によって加えられる力によって径方向に圧縮変形される。とりわけ、グリップ部材４０の肉厚が大きい領域４３に使用者の指が押し当てられると、肉厚が小さい領域４４に使用者の指が同一の力で押し当てられた場合よりも大きく圧縮変形される。更に、前述の通り、グリップ部材４０の肉厚が大きい領域４３では、グリップ部材４０の肉厚が小さい領域４４よりもブロック４０ｂの肉厚を厚く設けているため、使用者の指が押し当てられた際に四方を溝で囲まれたグリップ部材４０の個々のブロック４０ｂが四方に撓み変形しやすい。これらのことによって、グリップ部材４０の肉厚が大きい領域４３においては、使用者に対して軟らかい握り心地が提供される。 During this gripping, the grip member 40 is radially compressed and deformed by the force applied by the user's finger. In particular, when the user's finger is pressed against the region 43 having a large thickness of the grip member 40, it is compressed and deformed more than when the user's finger is pressed against the region 44 having a small thickness with the same force. It Further, as described above, in the region 43 where the thickness of the grip member 40 is large, since the thickness of the block 40b is provided thicker than the region 44 where the thickness of the grip member 40 is small, the user's finger is pressed. At this time, the individual blocks 40b of the grip member 40, which are surrounded by grooves on all sides, are easily bent and deformed in all directions. As a result, in the region 43 where the thickness of the grip member 40 is large, a soft grip feeling is provided to the user.

一方、グリップ部材４０の肉厚が小さい領域４４に使用者の指が押し当てられると、グリップ４０は、肉厚が大きい領域４３に使用者の指が押し当てられた場合よりも小さく圧縮変形される。更に、グリップ部材４０の肉厚が小さい領域４４ではブロック４０ｂの肉厚も最小であることから、ブロック４０ｂは、わずかな量しか撓み変形しない。従って、グリップ部材４０の肉厚が小さい領域４４においては、使用者に対して硬い握り心地が提供される。更に、本実施の形態では、前軸２０の面取り部２６の外面とグリップ部材４０の肉厚が大きい領域４３の内面とが隙間無く接触していて、この接触面の横断面が非円形となっていることにより、前軸２０に対するグリップ部材４０の相対回転が防止される（図７及び図８参照）。 On the other hand, when the user's finger is pressed against the region 44 with a small thickness of the grip member 40, the grip 40 is compressed and deformed smaller than when the user's finger is pressed against the region 43 with a large thickness. It Furthermore, since the thickness of the block 40b is also the minimum in the region 44 where the thickness of the grip member 40 is small, the block 40b flexes and deforms only a small amount. Therefore, in the region 44 where the wall thickness of the grip member 40 is small, a firm grip feeling is provided to the user. Further, in the present embodiment, the outer surface of the chamfered portion 26 of the front shaft 20 and the inner surface of the region 43 having a large thickness of the grip member 40 are in contact with each other without a gap, and the contact surface has a non-circular cross section. By doing so, relative rotation of the grip member 40 with respect to the front shaft 20 is prevented (see FIGS. 7 and 8).

筆記具１００による筆記が終了すると、使用者によって再度ノック部材７０が軸筒１０の軸方向前方に押圧操作（ノック操作）される。これにより、筆記体５０がコイルバネ６０の付勢力に対抗して軸筒１０の前方に相対移動される。この相対移動時に、筆記体５０は、カム機構２３によって軸筒１０の軸方向後方に相対移動可能な状態とされる。そして、押圧操作（ノック操作）が終了すると、コイルバネ６０の付勢力によって軸筒１０の軸方向後方へと相対移動され、初期状態、すなわち筆記体５０の筆記部５１が軸筒１０内に没入した状態が復帰される。 When the writing with the writing instrument 100 is completed, the user again pushes (knocks) the knock member 70 forward in the axial direction of the barrel 10. As a result, the writing body 50 is relatively moved in front of the barrel 10 against the biasing force of the coil spring 60. At the time of this relative movement, the cursive body 50 is brought into a state in which the cam mechanism 23 can relatively move backward in the axial direction of the barrel 10. Then, when the pressing operation (knocking operation) is completed, the coil spring 60 urges the coil cylinder 60 to move the shaft cylinder 10 axially rearward, so that the writing portion 51 of the writing body 50 is retracted into the shaft cylinder 10. The condition is restored.

以上のような本実施の形態によれば、グリップ部材４０の肉厚が大きい領域４３において使用者に軟らかい握り心地が提供され、グリップ部材４０の肉厚が小さい領域４４において使用者に硬い握り心地が提供されため、多くの使用者にとって握り心地が良いと感じるグリップ部材４０を有する筆記具１００を提供することができる。 According to the present embodiment as described above, a soft grip feeling is provided to the user in the thick region 43 of the grip member 40, and a hard grip feeling is provided to the user in the thin region 44 of the grip member 40. Therefore, it is possible to provide the writing instrument 100 having the grip member 40 that many users feel comfortable to grip.

本実施の形態の軸筒１０（前軸２０）の内面は、横断面が円形であるため、軸筒１０が当該軸筒１０内に収容されている筆記体５０と干渉することが無く、筆記具１００の組立も容易である。 Since the inner surface of the barrel 10 (front shaft 20) of the present embodiment has a circular cross section, the barrel 10 does not interfere with the writing body 50 accommodated in the barrel 10, and the writing instrument Assembly of 100 is also easy.

また、グリップ部材４０の外面は、横断面が略円形であるため、使用者は、違和感無く筆記具１００を把持することができる。 Further, since the outer surface of the grip member 40 has a substantially circular cross section, the user can grip the writing instrument 100 without feeling uncomfortable.

グリップ部材４０によって取り囲まれている前軸２０の被覆領域２５の外面は、前軸２０の肉厚が小さい領域として面取り部２６を有している。このため、グリップ部材４０を介して面取り部２６に対応する領域が把持されると当該グリップ部材４０の肉厚が大きい領域４３が比較的大きく圧縮変形されるため、面取り部６０が設けられていない領域、すなわちグリップ部材４０の肉厚が小さい領域４４が把持される場合と比較してより軟らかい握り心地が提供され得る。更に、面取り部２６とグリップ部材４０の肉厚が大きい領域４３とが係合して前軸２０に対するグリップ部材４０の不所望な相対回転を防止することができる。 The outer surface of the covering region 25 of the front shaft 20 surrounded by the grip member 40 has a chamfered portion 26 as a region where the front shaft 20 has a small thickness. For this reason, when the region corresponding to the chamfered portion 26 is gripped via the grip member 40, the region 43 having a large thickness of the grip member 40 is relatively largely compressed and deformed, and thus the chamfered portion 60 is not provided. A softer grip may be provided as compared to the case where the region, that is, the region 44 where the thickness of the grip member 40 is small, is grasped. Further, the chamfered portion 26 and the thick region 43 of the grip member 40 engage with each other to prevent the grip member 40 from undesirably rotating relative to the front shaft 20.

面取り部２６は、前軸２０の被覆領域２５の周方向の３箇所に等間隔で設けられているため、筆記具１００を把持する３本の指（親指、人差し指及び中指）がグリップ部材４０に接触する位置に前軸２０の面取り部２６及びグリップ部材４０の肉厚が大きい領域４３を位置付けることが可能である。すなわち、グリップ部材４０の肉厚が大きい領域４３、すなわち軟らかい握り心地を提供する領域を、効果的に配置することができる。 Since the chamfered portions 26 are provided at three positions in the circumferential direction of the covering region 25 of the front shaft 20 at equal intervals, the three fingers (thumb, index finger, and middle finger) holding the writing instrument 100 come into contact with the grip member 40. It is possible to position the chamfered portion 26 of the front shaft 20 and the region 43 where the thickness of the grip member 40 is large at the position where That is, the region 43 of the grip member 40 having a large thickness, that is, the region providing a soft grip feeling can be effectively arranged.

なお、本実施の形態では、軸方向に延びる一方の溝４１と、一方の溝から直交方向に延びる他方の溝によって、ブロック４０ｂ（矩形領域）が形成されているが、他の実施の形態においては、円環状に形成した溝によって四方が溝で囲まれたブロック４０ｂ（円環領域）が形成されていても良い。 In the present embodiment, the block 40b (rectangular region) is formed by the one groove 41 extending in the axial direction and the other groove extending in the orthogonal direction from the one groove, but in other embodiments. May have a block 40b (annular region) surrounded by a groove formed in an annular shape on all sides.

尚、本実施形態では、ブロック４０ｂの厚さは、厚さが一定でない場合は、その最大厚さをブロックの厚さとする。 In this embodiment, the thickness of the block 40b is the maximum thickness when the thickness is not constant.

また、本実施の形態では、筆記具１００としてボールペンを例にして説明を行ったが、これに限定されるものではない。筆記体５０を適宜選択することにより、シャープペン、サインペン、修正ペン等、各種の筆記具に対して本発明を適用することができる。 Further, in the present embodiment, a ballpoint pen is described as an example of the writing instrument 100, but the present invention is not limited to this. By appropriately selecting the writing body 50, the present invention can be applied to various writing instruments such as a mechanical pencil, a felt-tip pen, and a correction pen.

１０ 軸筒
２０ 前軸
２１ 第１開口部
２２ 第１係合部
２３ 回転カム
２４ 前端領域
２５ 被覆領域
２５ａ 上方部分の断面
２５ｂ 下方部分の断面
２６ 面取り部
２７ 前軸の肉厚が大きい領域
３０ 後軸
３１ 第２開口部
４０ グリップ部材
４０ｂ ブロック
４１ 一方の溝
４２ 他方の溝
４３ グリップ部材の肉厚が大きい領域
４４ グリップ部材の肉厚が小さい領域
４５ 外方領域
４６ 内方領域
４６ａ 肉厚が大きい内方領域
４６ｂ 肉厚が小さい内方領域
５０ 筆記体
５０ｅ 筆記体の後端
５１ 筆記部
５２ 第２係合部
６０ コイルバネ
７０ ノック部材
７０ｅ ノック部材の後端
１００ 筆記具 10 Shaft Cylinder 20 Front Shaft 21 First Opening 22 First Engaging Part 23 Rotating Cam 24 Front End Area 25 Covering Area 25a Upper Section 25b Lower Section 26 Chamfer 27 Front Shaft Thick Area 30 Rear Shaft 31 Second opening 40 Grip member 40b Block 41 One groove 42 The other groove 43 Region where the grip member has a large thickness 44 Region where the grip member has a small thickness 45 Outer region 46 Inner region 46a Larger thickness Inner region 46b Inner region 50 having a small thickness 50 Writing body 50e Writing body rear end 51 Writing portion 52 Second engaging portion 60 Coil spring 70 Knock member 70e Knock member rear end 100 Writing instrument

Claims (5)

軸筒と、
前記軸筒を周方向に取り囲むグリップ部材と、を備え、
前記グリップ部材の肉厚は、前記周方向に沿って変動し、
前記軸筒の肉厚は、前記周方向に沿って変動し、
前記グリップ部材の肉厚が大きい領域は、前記軸筒の肉厚が小さい領域を取り囲み、
前記グリップ部材の肉厚が小さい領域は、前記軸筒の肉厚が大きい領域を取り囲み、
前記グリップ部材は、前記周方向に延びる溝を有し、
前記グリップ部材の肉厚が大きい領域における前記溝の深さは、前記グリップ部材の肉厚が小さい領域における当該溝の深さよりも大きい
ことを特徴とする筆記具。 A shaft cylinder,
A grip member surrounding the shaft cylinder in the circumferential direction,
The thickness of the grip member varies along the circumferential direction,
The wall thickness of the barrel varies along the circumferential direction,
A region where the wall thickness of the grip member is large surrounds a region where the wall thickness of the barrel is small,
Said area the thickness of the grip member is small, enclose take the thickness is larger region of the barrel,
The grip member has a groove extending in the circumferential direction,
The writing instrument characterized in that the depth of the groove in a region of the grip member having a large thickness is larger than the depth of the groove in a region of the grip member having a small thickness . 前記軸筒の内面は、横断面が略円形である
ことを特徴とする請求項１に記載の筆記具。 The writing instrument according to claim 1, wherein an inner surface of the barrel has a substantially circular cross section. 前記グリップ部材の外面は、横断面が略円形である
ことを特徴とする請求項１または２に記載の筆記具。 The writing instrument according to claim 1, wherein an outer surface of the grip member has a substantially circular cross section. 前記グリップ部材によって取り囲まれている前記軸筒の外面は、面取り部を有していることを特徴とする請求項１乃至３のいずれかに記載の筆記具。 The writing instrument according to any one of claims 1 to 3, wherein an outer surface of the barrel surrounded by the grip member has a chamfered portion. 前記面取り部は、前記軸筒の周方向の３箇所に等間隔で設けられている
ことを特徴とする請求項４に記載の筆記具。 The writing instrument according to claim 4, wherein the chamfered portions are provided at equal intervals at three positions in the circumferential direction of the shaft cylinder.
JP2016057536A 2016-03-22 2016-03-22 Writing instrument Active JP6707375B2 (en)

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JP2016057536A JP6707375B2 (en) 2016-03-22 2016-03-22 Writing instrument
CN201780019871.XA CN108883655B (en) 2016-03-22 2017-03-17 Writing instrument and holding member
PCT/JP2017/010977 WO2017164131A1 (en) 2016-03-22 2017-03-17 Writing implement and grip member
KR1020187025954A KR102184980B1 (en) 2016-03-22 2017-03-17 No writing instruments and grips
TW106109485A TWI636900B (en) 2016-03-22 2017-03-22 Writing utensil and grip member

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JPH0447574U (en) * 1990-08-24 1992-04-22
USH1050H (en) * 1990-11-02 1992-05-05 The Gillette Company Writing instrument
JP2607456Y2 (en) * 1993-05-31 2001-09-04 ぺんてる株式会社 Grasping structure of writing instrument
US6164855A (en) * 1998-03-26 2000-12-26 Bic Corporation Writing instrument with finger gripping device
CN2493421Y (en) * 2001-05-14 2002-05-29 陈国寿 Writing tool holder
US6485211B1 (en) * 2001-09-25 2002-11-26 Bic Corporation Easily assembled grip element
JP4043305B2 (en) 2002-07-10 2008-02-06 三菱鉛筆株式会社 Grip and writing instrument provided with the grip
JP4183452B2 (en) * 2002-07-31 2008-11-19 株式会社パイロットコーポレーション Multi-core writing instrument
JP2004066560A (en) * 2002-08-02 2004-03-04 Kotobuki & Co Ltd Grip structure of writing utensil
JP2004142191A (en) * 2002-10-23 2004-05-20 Pentel Corp Variable grip structure
JP4001130B2 (en) * 2004-06-25 2007-10-31 ぺんてる株式会社 Writing instrument grip
DE202005009196U1 (en) * 2005-06-11 2005-09-08 Kuo, Chin-Yi, Panchiao Writing implement has hollow tubular grip with refill and outer ornamental rings arranged on grip in various sequences and arrangements
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TW201736154A (en) 2017-10-16
WO2017164131A1 (en) 2017-09-28
TWI636900B (en) 2018-10-01
KR102184980B1 (en) 2020-12-01
JP2017170701A (en) 2017-09-28
CN108883655B (en) 2020-10-02
KR20180124860A (en) 2018-11-21

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