JP6401484B2 - Writing instrument - Google Patents
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- JP6401484B2 JP6401484B2 JP2014080726A JP2014080726A JP6401484B2 JP 6401484 B2 JP6401484 B2 JP 6401484B2 JP 2014080726 A JP2014080726 A JP 2014080726A JP 2014080726 A JP2014080726 A JP 2014080726A JP 6401484 B2 JP6401484 B2 JP 6401484B2
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Description
本発明はコレクターを有する筆記具に関する。 The present invention relates to a writing instrument having a collector.
従来、コレクター式の筆記具は周知の技術であり、先端のデザイン形状を優先するため、筆記具の後方から、インク供給部及び筆記先端を組み付ける方法がとられていた。そのような筆記具の一つとして、下記特許文献１に記載の発明が開示されている。 Conventionally, a collector-type writing instrument is a well-known technique, and in order to give priority to the design shape of the tip, a method of assembling the ink supply unit and the writing tip from the rear of the writing instrument has been taken. As one such writing instrument, an invention described in Patent Document 1 below is disclosed.
コレクターを有する筆記具において、筆記具先端部分では、コレクター、筆記先端及びコレクター芯等、様々な部品が備わっているため、寸法誤差が生じやすい。また、コレクターを有する筆記具には粘度の低いインクを用いるため、インクが漏れやすい。そのため、高い寸法制度が要求され、製造コストが上昇するおそれがある、という問題がある。 In a writing instrument having a collector, the writing instrument tip portion is provided with various parts such as a collector, a writing tip, and a collector core, so that a dimensional error is likely to occur. Further, since ink having a low viscosity is used for a writing instrument having a collector, the ink is likely to leak. Therefore, there is a problem that a high dimensional system is required and the manufacturing cost may increase.
本発明は、上記した問題点に鑑みてなされたものであり、その目的とするところは、製造の際に高い寸法制度が要求されず、その製造コストの上昇を未然に防止できる筆記具の提供である。
（第1の発明）
本願における第１の発明は、
筆記先端40と、
ボールペン内部の圧力を調整しているコレクター31と、
前記筆記先端40及び前記コレクター31を連結させる継手60と、
前記筆記先端40、前記コレクター31及び前記継手60を内部に収納する軸筒10とを有する筆記具であって、
前記継手60は、
前後方向に圧縮可能なクッション性を有するように形成されていることを特徴とする。
The present invention has been made in view of the above-described problems, and the object of the present invention is to provide a writing instrument that does not require a high dimensional system during manufacturing and can prevent an increase in manufacturing cost. is there.
(First invention)
The first invention in this application is:
Writing tip 40,
A collector 31 for adjusting the pressure inside the ballpoint pen,
A joint 60 for connecting the writing tip 40 and the collector 31,
A writing instrument having the writing tip 40, the collector 31, and the shaft tube 10 that houses the joint 60 therein,
The joint 60 is
It is formed to have a cushioning property that can be compressed in the front-rear direction.
筆記具1は、インクの種類によって筆記先端40をボールペンチップや化粧用アイライナーの筆にすることで、ボールペンやアイライナーとすることができる。
（第２の発明）
本願における第２の発明は、第１の発明の特徴に加え、コレクター31の前方外周には、前記軸筒と略同径のコレクター鍔部34aが設けられており、コレクター鍔部34aが軸筒10の内部に収納された際に、コレクター鍔部34aよりも後方に位置する軸筒10前方の内周には、コレクター鍔部34aと係合するように、内方へ突出した先軸前部内方突起16aが設けられている事を特徴とする。
The writing instrument 1 can be a ballpoint pen or an eyeliner by changing the writing tip 40 to a ballpoint pen tip or a makeup eyeliner depending on the type of ink.
(Second invention)
In the second invention of the present application, in addition to the features of the first invention, a collector collar part 34a having substantially the same diameter as the shaft cylinder is provided on the front outer periphery of the collector 31, and the collector collar part 34a is a shaft cylinder. 10 is stored in the interior of the front end of the front shaft that protrudes inward so as to engage with the collector flange 34a on the inner periphery of the front side of the shaft cylinder 10 positioned behind the collector flange 34a. A feature is that a ridge 16a is provided.
本発明によると、継手60に、前後方向に圧縮可能なクッション性を有することで、コレクターや筆記先端の前後方向に対して、寸法がずれてしまったとしても、継手60のクッション性により補正が可能であり、高い寸法精度が要求されず、製造コストの上昇を抑えられる効果が期待できる。 According to the present invention, since the joint 60 has a cushioning property that can be compressed in the front-rear direction, even if the dimensions are shifted with respect to the front-rear direction of the collector or the writing tip, the correction is made by the cushioning property of the joint 60. This is possible, and high dimensional accuracy is not required, and an effect of suppressing an increase in manufacturing cost can be expected.
以下、図面を参照しつつ、本発明の実施の形態を筆記具1として内部にコレクターを有するボールペン1を例に説明する。なお、本発明において、筆記具1及びその構成部品についての「前方」とは筆記先端40を筆記具1の先端とした場合の先端側を表し、「後方」とはその反対側を表すものとする。
（全体構造）
ボールペン1は、図１（Ａ）及び（Ｂ）に示すように、先端に筆記ボール50を抱持したボールペンチップ40と、ボールペンチップ40にインクを供給するインク供給部30と、ボールペンチップ40及びインク供給部30を繋ぐ継手60と、ボールペンチップ40、継手60及びインク供給部30を内部に収納する軸筒10と、軸筒10先端に装着され、ボールペンチップ40の外周を覆うアウター20とを備えている。
Hereinafter, an embodiment of the present invention will be described using the writing pen 1 as an example and a ballpoint pen 1 having a collector inside as an example. In the present invention, “front” for the writing instrument 1 and its components represents the tip side when the writing tip 40 is the tip of the writing instrument 1, and “rear” represents the opposite side.
(Overall structure)
As shown in FIGS. 1A and 1B, the ballpoint pen 1 includes a ballpoint pen tip 40 that holds a writing ball 50 at its tip, an ink supply unit 30 that supplies ink to the ballpoint pen tip 40, a ballpoint pen tip 40, A joint 60 that connects the ink supply unit 30, a ballpoint pen tip 40, a shaft cylinder 10 that houses the joint 60 and the ink supply unit 30, and an outer 20 that is attached to the tip of the shaft cylinder 10 and covers the outer periphery of the ballpoint pen tip 40. I have.
（軸筒の構造）
図１（Ｂ）に示すように、軸筒10は、後端が閉鎖している筒形状のインクタンク13と、筒形状で先端は先細り形状をしており、後端の内周にインクタンク13の先端が嵌入している先軸11と、後端が閉鎖している筒形状で、先端の内周に先軸11の後端が嵌入している後軸12とからなる。
図１（Ｂ）に示すように、インクタンク13の外径は、先軸11後端の内径と略同径である。図２に示すように、インクタンク13の外周には、インクタンク13の先端から約１／３ほどの位置に、外方へ突出したインクタンク外方突起13aが設けられている。また、インクタンク13には図示しないインクが充填されている。
(Shaft tube structure)
As shown in FIG. 1B, the shaft cylinder 10 has a cylindrical ink tank 13 whose rear end is closed, and a cylindrical shape with a tapered front end, and an ink tank on the inner periphery of the rear end. It consists of a front shaft 11 into which the front end of 13 is fitted, and a rear shaft 12 having a cylindrical shape with the rear end closed and a rear end of the front shaft 11 fitted into the inner periphery of the front end.
As shown in FIG. 1B, the outer diameter of the ink tank 13 is substantially the same as the inner diameter of the rear end of the front shaft 11. As shown in FIG. 2, an ink tank outer protrusion 13 a that protrudes outward is provided on the outer periphery of the ink tank 13 at a position about 1/3 from the tip of the ink tank 13. The ink tank 13 is filled with ink (not shown).
図１（Ｂ）に示すように、先軸11は略筒状で、先端は先細り形状をしている。先軸11の外周には、先軸11の後端から約１／３の位置に、外径が後軸12の外径と略同径で、後軸12の先端が当接する先軸鍔部15が設けられている。先軸11は先軸鍔部15を境に、後方の略円筒状をした先軸後部14と、前方の先細り形状をした先軸前部16とからなる。図２に示すように、先軸後部14の内周には、インクタンク13が先軸11に嵌入した際のインクタンク外方突起13aの直後に、内方へ突出した先軸内方突起11aが設けられている。先軸後部14の外周には、先軸内方突起11aよりも前方に、複数の外方へ突出した先軸外方突起11bが設けられている。図3（Ｂ）に示すように、先軸前部16の内周には、先細りし始める位置にインク供給部30と係合するリング状に形成された先軸前部内方突起16aと、継手60に当接するように内周の一部分が肉厚になっている肉厚部16bとが形成されている。また、先軸前部16の前方には、継手60の先端が挿入できるように縮径された先軸前部縮径孔16cと、先軸前部縮径孔16cの前方に連設しているアウター20が挿入されるアウター挿入孔16dとが設けられている。先軸前部16の先端近傍の外周には、他部材が装着できるような溝が設けられており、この溝には滑り止めとなるようなグリップ部材16eが装着されている。 As shown in FIG. 1B, the tip shaft 11 is substantially cylindrical and the tip is tapered. On the outer periphery of the front shaft 11, a front shaft collar portion with an outer diameter approximately the same as the outer diameter of the rear shaft 12 at a position about 1/3 from the rear end of the front shaft 11 and the front end of the rear shaft 12 abuts 15 is provided. The front shaft 11 includes a front shaft rear portion 14 having a substantially cylindrical shape at the front shaft flange portion 15 and a front shaft front portion 16 having a front tapered shape. As shown in FIG. 2, on the inner periphery of the front shaft rear portion 14, a front shaft inner protrusion 11a protruding inward immediately after the ink tank outer protrusion 13a when the ink tank 13 is fitted into the front shaft 11 is provided. Is provided. On the outer periphery of the front shaft rear portion 14, a plurality of front shaft outer protrusions 11b projecting outward are provided in front of the front shaft inner protrusion 11a. As shown in FIG. 3 (B), on the inner periphery of the front shaft front portion 16, a front shaft front inner protrusion 16a formed in a ring shape that engages with the ink supply unit 30 at a position where the taper begins to taper, and a joint A thick part 16b having a part thick on the inner periphery is formed so as to abut against 60. Further, in front of the front shaft front portion 16, a front shaft front reduced diameter hole 16c having a diameter reduced so that the tip of the joint 60 can be inserted, and a front front shaft reduced diameter hole 16c are continuously provided. An outer insertion hole 16d into which the outer 20 is inserted is provided. On the outer periphery in the vicinity of the front end of the front shaft front portion 16, a groove is provided so that other members can be mounted, and a grip member 16e that prevents slipping is mounted in this groove .
図１（Ｂ）に示すように、後軸12の内径は、先軸後部14の外径と略同径である。図２に示すように、後軸12の内周には、先軸11が後軸12に嵌入した際に先軸11の後端を被覆する位置に、僅かに径が縮小するように形成された後軸テーパー部12aと、内方へ突出した後軸内方突起12bとが設けられている。ここで、後軸内方突起12bは、先軸外方突起11bと同数設けられており、先軸外方突起11bと対となるように、各先軸外方突起11bの直前に設けられている。
前述のインクタンク外方突起13a及び先軸内方突起11aは係合している。また、先軸外方突起11b及び後軸内方突起12bも係合している。これらの係合によって、インクタンク外方突起13a、先軸内方突起11a、先軸外方突起11b及び後軸内方突起12bが抜け止めとして作用しているため、インクタンク13、先軸11及び後軸12はそれぞれ外れにくくなっている。また、インクタンク外方突起13a及び先軸内方突起11aはそれぞれリング状に形成された突条である。また、先軸外方突起11b及び後軸内方突起12bも同様に、それぞれリング状に形成された突条である。なお、インクタンク外方突起13a及び先軸内方突起11aは何れか一方のみが周に沿ってリング状に形成された突条であってもよい。また、先軸外方突起11b及び後軸内方突起12bも同様に、何れか一方のみが周に沿ってリング状に形成された突条であってもよい。
As shown in FIG. 1B, the inner diameter of the rear shaft 12 is substantially the same as the outer diameter of the front shaft rear portion 14. As shown in FIG. 2, the inner periphery of the rear shaft 12 is formed so that the diameter is slightly reduced at a position that covers the rear end of the front shaft 11 when the front shaft 11 is fitted into the rear shaft 12. Further, a rear shaft taper portion 12a and a rear shaft inward projection 12b projecting inward are provided. Here, the rear shaft inward protrusions 12b are provided in the same number as the front shaft outer protrusions 11b, and are provided immediately in front of the front shaft outer protrusions 11b so as to be paired with the front shaft outer protrusions 11b. Yes.
The ink tank outer protrusion 13a and the front shaft inner protrusion 11a are engaged with each other. Further, the front shaft outer protrusion 11b and the rear shaft inner protrusion 12b are also engaged. By these engagements, the ink tank outer protrusion 13a, the front shaft inner protrusion 11a, the front shaft outer protrusion 11b, and the rear shaft inner protrusion 12b act as stoppers, so that the ink tank 13, the front shaft 11 And the rear shaft 12 is difficult to come off. The ink tank outer protrusion 13a and the front shaft inner protrusion 11a are protrusions formed in a ring shape. Similarly, the front-shaft outward projection 11b and the rear-shaft inward projection 12b are respectively ridges formed in a ring shape. Note that either one of the ink tank outer protrusion 13a and the front shaft inner protrusion 11a may be a protrusion formed in a ring shape along the circumference. Similarly, the front shaft outer protrusion 11b and the rear shaft inner protrusion 12b may be protrusions in which only one of them is formed in a ring shape along the circumference.
（インク供給部）
図４及び図５に示すように、インク供給部30は、略筒状で複数のフィン33が外周に櫛歯状に形成されたコレクター31と、棒状のポリエステルファイバーから成り、コレクター31を軸方向に貫通しており、かつ先端が継手60の後端に嵌入しているコレクター芯32とからなる。図５に示すように、コレクター31の先端には、内径が拡径している先端保持部34が設けられている。
図４及び図５に示すように、先端保持部34の外周には、先軸前部16の内周に形成された先軸前部内方突起16aに係合し、先軸前部内方突起16aの直前に設けられたリング状のコレクター鍔部34aと、コレクター鍔部34aの前方に連設し、コレクター鍔部34aよりも径が小さいコレクター段部34bと、コレクター段部34bの前方に連設し、コレクター段部34bよりも径が小さいコレクター当接部34cとが設けられている。
(Ink supply unit)
As shown in FIGS. 4 and 5, the ink supply unit 30 includes a collector 31 having a substantially cylindrical shape and a plurality of fins 33 formed in a comb-like shape on the outer periphery, and a rod-like polyester fiber. And a collector core 32 having a leading end fitted into the rear end of the joint 60 . As shown in FIG. 5, the tip of the collector 31 is provided with a tip holding portion 34 having an enlarged inner diameter.
As shown in FIGS. 4 and 5, on the outer periphery of the tip holding portion 34, the front shaft front inward protrusion 16a formed on the inner periphery of the front shaft front portion 16 is engaged, and the front shaft front inner protrusion 16a is engaged. A ring-shaped collector collar 34a provided immediately before the collector collar 34a, connected in front of the collector collar 34a, a collector step 34b having a smaller diameter than the collector collar 34a, and connected in front of the collector collar 34b. In addition, a collector contact portion 34c having a diameter smaller than that of the collector step portion 34b is provided.
コレクター31の後端はインクタンク13と接している。また、コレクター芯32の後方はインクタンク13内に突出しており、前方は継手60の後端から継手60の約１／２の位置まで挿入されている。
（ボールペンチップ）
図６に示すように、ボールペンチップ40は、円筒形状のホルダー42と、ホルダー42に挿入され、ホルダー42の後端から突出する棒状の中芯41と、ホルダー42に保持される筆記ボール50とからなる。ホルダー42の先端には、小口を内方に押圧して縮径変形されたカシメ部42aが形成されている。そして、筆記ボール50の先端は、カシメ部42aの先端縁から露出するようになっている。中芯41はコレクター芯32と同様にポリエステルファイバーにより形成され、中芯41の後端はコレクター芯32の先端に嵌め込まれるとともに、中芯41の先端は筆記ボール50の直後に達しており、コレクター芯32に浸透したインクを吸収して筆記ボール50にインクを供給する。さらに、ボールペンチップ40は、後端から約２／３程度が継手60に保持される。
The rear end of the collector 31 is in contact with the ink tank 13. Further, the rear side of the collector core 32 protrudes into the ink tank 13, and the front side is inserted from the rear end of the joint 60 to a position about ½ of the joint 60.
(Ballpoint pen tip)
As shown in FIG. 6, the ballpoint pen tip 40 includes a cylindrical holder 42, a rod-shaped core 41 that is inserted into the holder 42 and protrudes from the rear end of the holder 42, and a writing ball 50 that is held by the holder 42. Consists of. At the tip of the holder 42, a crimping portion 42a that is deformed by reducing the diameter by pressing the fore inward is formed. The tip of the writing ball 50 is exposed from the tip edge of the caulking portion 42a. The core 41 is formed of polyester fiber in the same manner as the collector core 32. The rear end of the core 41 is fitted into the tip of the collector core 32, and the tip of the core 41 reaches immediately after the writing ball 50. The ink penetrating the core 32 is absorbed and supplied to the writing ball 50. Further, about 2/3 of the ballpoint pen tip 40 is held by the joint 60 from the rear end.
なお、コレクター芯32及び中芯41は、使用するインクの粘度等の性状に応じて、適切なポリエステルファイバーの気孔率や表面形状を選択して形成される。
（継手）
図４及び図７に示すように、継手60は、略筒状の中心部材61と、中心部材61後方の外周にコレクター31の先端保持部34の厚さ分の空隙部64を有するように、中心部材61の後端から約１／４から約１／３あたりまでに成形された略筒状の周辺部材62と、周辺部材62の先端から中心部材61の先端から約１／３の位置までを覆うように形成された介在部材63とからなる。中心部材61の内部には、後方からコレクター芯32が挿入され、前方からボールペンチップ40が挿入される。また、中心部材61と周辺部材62との間に形成された空隙部64に先端保持部34が嵌合される。
The collector core 32 and the middle core 41 are formed by selecting an appropriate porosity and surface shape of the polyester fiber according to the properties such as the viscosity of the ink used.
(Fitting)
As shown in FIGS. 4 and 7, the joint 60 has a substantially cylindrical center member 61 and a gap portion 64 corresponding to the thickness of the tip holding portion 34 of the collector 31 on the outer periphery behind the center member 61. A substantially cylindrical peripheral member 62 formed from about ¼ to about ３ from the rear end of the central member 61, and from the distal end of the peripheral member 62 to a position of about ３ from the distal end of the central member 61 And an interposition member 63 formed so as to cover. In the center member 61, the collector core 32 is inserted from the rear, and the ballpoint pen tip 40 is inserted from the front. Further, the tip holding portion 34 is fitted into a gap portion 64 formed between the central member 61 and the peripheral member 62.
図８（Ｃ）に示すように、中心部材61の内周には、後端にコレクター芯32と略同径の後方挿入孔61aと、中芯41の後端付近からホルダー42の後端までに位置し、中芯41と略同径の中央挿入孔61bと、ホルダー42の後端から中心部材61の先端までに位置し、ホルダー42と略同径の先方挿入孔61cとが設けられている。中心部材61の外周には、中心部材61の後方挿入孔61aの先端から１／３より後方で、周辺部材62の先端よりも前方に位置し、先端保持部34の外径よりも径が小さい、リング状の中心部材鍔部61eが形成されている。また、中心部材61の外周は、後端から中心部材鍔部61eまでに位置する後方円柱部後部61dと、中心部材鍔部61eから後方挿入孔61aの先端よりも後方に位置する後方円柱部前部61fと、後方円柱部前部61fの先端から中央挿入孔61bの後端のやや前方までに位置する中央円柱部61gと、中央円柱部61gの先端から中心部材61の先端までに位置する前方円柱部61hとからなる。ここで、後方円柱部後部61d及び後方円柱部前部61fの外径は先端保持部34の内径と略同径で、中央円柱部61gの外径は先軸前部縮径孔16cの径と略同径で、前方円柱部61hの外径はアウター20の後方に設けられた後部挿入孔24の径と略同径である。 As shown in FIG. 8 (C), at the inner periphery of the center member 61, a rear insertion hole 61a having substantially the same diameter as the collector core 32 and a vicinity of the rear end of the center core 41 to the rear end of the holder 42 are provided at the rear end. A central insertion hole 61b having substantially the same diameter as the center core 41 and a distal insertion hole 61c having substantially the same diameter as that of the holder 42 are provided from the rear end of the holder 42 to the tip of the central member 61. Yes. The outer periphery of the center member 61 is located behind the end of the rear insertion hole 61a of the center member 61, and is located in front of the end of the peripheral member 62, and has a diameter smaller than the outer diameter of the end holding portion 34. A ring-shaped central member flange 61e is formed. Further, the outer periphery of the center member 61 includes a rear cylindrical portion rear portion 61d located from the rear end to the central member collar portion 61e, and a rear cylindrical portion front portion located rearward from the central member collar portion 61e and the tip of the rear insertion hole 61a. 61f, a central cylindrical portion 61g positioned from the front end of the rear cylindrical portion front portion 61f to the front end of the rear end of the central insertion hole 61b, and a front position positioned from the front end of the central cylindrical portion 61g to the front end of the central member 61. It consists of a cylindrical part 61h. Here, the outer diameter of the rear cylinder part rear part 61d and the rear cylinder part front part 61f is substantially the same as the inner diameter of the tip holding part 34, and the outer diameter of the central cylinder part 61g is the same as the diameter of the front shaft front reduced diameter hole 16c. The front cylindrical part 61h has substantially the same diameter, and the outer diameter of the front cylindrical part 61h is substantially the same as the diameter of the rear insertion hole 24 provided behind the outer 20.
図８（Ｃ）に示すように、周辺部材62の内径はコレクター31の先端保持部34の外径と略同径である。周辺部材62の内周には、周辺部材62の後端に位置し、僅かに拡径している、周辺部材拡径部62aと、周辺部材62の後端から約１／２に位置し、リング状に形成された周辺部材内方突起62bとが設けられている。ここで、周辺部材拡径部62aの径はコレクター当接部34cの径よりも小さく、先端保持部34を挿入しやすくするために設けられている。また、周辺部材内方突起62bは、インク供給部30の先端保持部34を周辺部材62と中心部材61で挟持するために設けられている。周辺部材62の外周は、周辺部材62の後端から周辺部材内方突起62bまでに位置する周辺部材後方外周部62cと、周辺部材後方外周部62cに連設している周辺部材中央外周部62dと、周辺部材中央外周部62dに連設し、周辺部材62の先端までに位置する周辺部材前方外周部62eとからなる。周辺部材後方外周部62cの径はコレクター段部34bの径と略同じで、周辺部材中央外周部62dの径は周辺部材後方外周部62cの径よりもやや小さく、周辺部材前方外周部62eの径は周辺部材中央外周部62dの径よりもやや小さい。周辺部材前方外周部62eの先端から約１／２の位置には、リング状の周辺部材外方突部62fが設けられている。前記周辺部材外方突部62fには円周方向に少なくとも一カ所以上の欠部62gが設けられている。ここで、前記欠部62gの外径は、周辺部材前方外周部62eの外径と同一である。 As shown in FIG. 8C, the inner diameter of the peripheral member 62 is substantially the same as the outer diameter of the tip holding portion 34 of the collector 31. The inner periphery of the peripheral member 62 is located at the rear end of the peripheral member 62 and slightly expanded in diameter, and is positioned about ½ from the rear end of the peripheral member 62 and the peripheral member 62, A peripheral member inward projection 62b formed in a ring shape is provided. Here, the diameter of the peripheral member enlarged diameter portion 62a is smaller than the diameter of the collector contact portion 34c, and is provided to facilitate the insertion of the tip holding portion 34. Further, the peripheral member inward projection 62b is provided to sandwich the tip holding portion 34 of the ink supply unit 30 between the peripheral member 62 and the central member 61. The outer periphery of the peripheral member 62 has a peripheral member rear outer peripheral portion 62c located from the rear end of the peripheral member 62 to the peripheral member inward projection 62b, and a peripheral member central outer peripheral portion 62d connected to the peripheral member rear outer peripheral portion 62c. And a peripheral member front outer peripheral part 62e that is connected to the peripheral peripheral part 62d of the peripheral member and is located up to the tip of the peripheral member 62. The diameter of the peripheral member rear outer peripheral part 62c is substantially the same as the diameter of the collector step 34b, the diameter of the peripheral member central outer peripheral part 62d is slightly smaller than the diameter of the peripheral member rear outer peripheral part 62c, and the diameter of the peripheral member front outer peripheral part 62e. Is slightly smaller than the diameter of the peripheral member central outer peripheral part 62d. A ring-shaped peripheral member outward protrusion 62f is provided at a position about ½ from the tip of the peripheral member front outer peripheral portion 62e. The peripheral member outward projection 62f is provided with at least one notch 62g in the circumferential direction. Here, the outer diameter of the notched portion 62g is the same as the outer diameter of the peripheral member front outer peripheral portion 62e.
図７及び図９（Ｃ）に示すように、介在部材63は、周辺部材62を覆い、外径が周辺部材外方突部62fの径と略同じ、略円筒状の介在部材後方円柱部63aと、介在部材後方円柱部63aに連設し、中心部材鍔部61eまでを覆い、略円錐形状をしている連結部63bと、連結部63bに連設し、中央円柱部61gの中央付近までを覆い、なだらかな円錐形状をした介在部前方円錐部63cとからなる。介在部材後方円柱部63aは周辺部材前方外周部62eの後端から周辺部材62の欠部62gを介して、周辺部材前方外周部62eの先端まで覆っており、結果として、周辺部材外方突部62fと係合している。介在部材63の内周は中心部材61及び周辺部材62の外周に沿うように形成されており、連結部63bの後端に位置する内径は、周辺部材62の内径と同じであり、連結部63bの前方に位置する内径は、介在部材63の内径から、中心部材鍔部61eの外径となるように、除々に縮径していくようなテーパーを有している。 As shown in FIGS. 7 and 9C, the interposition member 63 covers the peripheral member 62 and has a substantially cylindrical interposition member rear column portion 63a having an outer diameter substantially the same as the diameter of the peripheral member outer protrusion 62f. And a connecting part 63b that is connected to the intermediate member rear cylinder part 63a, covers up to the central member collar part 61e, has a substantially conical shape, and is connected to the connecting part 63b to the vicinity of the center of the central cylindrical part 61g. And an intermediate portion front conical portion 63c having a gentle conical shape. The interposed member rear cylindrical portion 63a covers from the rear end of the peripheral member front outer peripheral portion 62e to the tip of the peripheral member front outer peripheral portion 62e through the notch 62g of the peripheral member 62, and as a result, the peripheral member outward protrusion It is engaged with 62f. The inner periphery of the interposed member 63 is formed along the outer periphery of the center member 61 and the peripheral member 62, and the inner diameter located at the rear end of the connecting portion 63b is the same as the inner diameter of the peripheral member 62, and the connecting portion 63b The inner diameter located in front of the taper has a taper that gradually decreases from the inner diameter of the interposed member 63 so as to be the outer diameter of the central member flange 61e.
（二色成形）
継手60は二色成形により成形された部品であり、中心部材61及び周辺部材62を一次成形で成形し、これら中心部材61及び周辺部材62に対し介在部材63を二次成形により一体成形している。介在部材63は連結部63bにおいて、撓りをもたせるため、弾性樹脂材料によって形成される。前記弾性材料としては、成型工程において、金型を用いて、高温下で行うため熱可塑性のエラストマーが望ましい。一次成形体である中心部材61及び周辺部材62の材質はポリアセタール樹脂等の硬質樹脂が望ましい。
(Two-color molding)
The joint 60 is a part formed by two-color molding. The central member 61 and the peripheral member 62 are formed by primary molding, and the interposition member 63 is integrally molded by secondary molding with respect to the central member 61 and the peripheral member 62. Yes. The interposition member 63 is formed of an elastic resin material so as to bend at the connecting portion 63b. As the elastic material, a thermoplastic elastomer is desirable because it is performed at a high temperature using a mold in the molding process. The material of the central member 61 and the peripheral member 62 that are primary molded bodies is preferably a hard resin such as polyacetal resin.
（アウター）
図６に示すように、アウター20は円筒状のアウター固定部21と、このアウター固定部21に連設する略円錐形状のアウターテーパー部22とからなる。アウターテーパー部22の先端には面取りされたアウター先端部23が設けられている。また、アウター20には、後端から先端に向けて孔が形成されており、アウター固定部21の内面には、後部挿入孔24が設けられ、アウターテーパー部22の先端付近の内面には、後部挿入孔24よりも小径の前部挿入孔25が設けられている。アウター固定部21はアウター挿入孔16dに装着されることで、先軸11に固定される。そして、アウター20はボールペンチップ40を被覆する。この際、後部挿入孔24に継手60の前方円柱部61hが挿入され、前部挿入孔25には、継手60から突出しているボールペンチップ40が挿入される。図６に示すように、アウター先端部23から、筆記ボール50と、筆記ボール50を覆うカシメ部42aとが露出している。
(outer)
As shown in FIG. 6, the outer 20 is composed of a cylindrical outer fixing portion 21 and a substantially conical outer taper portion 22 connected to the outer fixing portion 21. A chamfered outer tip portion 23 is provided at the tip of the outer tapered portion 22. Further, the outer 20 is formed with a hole from the rear end to the front end, the inner surface of the outer fixing portion 21 is provided with a rear insertion hole 24, and the inner surface near the front end of the outer tapered portion 22 is A front insertion hole 25 having a smaller diameter than the rear insertion hole 24 is provided. The outer fixing portion 21 is fixed to the front shaft 11 by being attached to the outer insertion hole 16d. The outer 20 covers the ballpoint pen tip 40. At this time, the front cylindrical portion 61h of the joint 60 is inserted into the rear insertion hole 24, and the ball-point pen tip 40 protruding from the joint 60 is inserted into the front insertion hole 25. As shown in FIG. 6, the outer tip 2 three, et al., The writing ball 50, a caulking portion 42a for covering the writing ball 50 is exposed.
（ボールペンの組立）
ボールペン1は次のように組み立てる。まず、コレクター31の先端保持部34を継手60の空隙部64に嵌入させ、コレクター31の後端からコレクター芯32を、継手60の先端から筆記ボール50を抱持させたボールペンチップ40をそれぞれ挿入し、コレクター芯32にボールペンチップ40の中芯41を嵌入させる。組み合わせたコレクター31、コレクター芯32、継手60及びボールペンチップ40を先軸11の後端から挿入する。その後ボールペンチップ40を覆うようにしてアウター20を先軸11の内周に装着する。若しくはアウター20を先軸11の内周に装着した後、組み合わせたコレクター31、コレクター芯32、継手60及びボールペンチップ40を先軸11の後端から挿入して組み立ててもよい。
(Ball pen assembly)
The ballpoint pen 1 is assembled as follows. First, the tip holding portion 34 of the collector 31 is fitted into the gap 64 of the joint 60, and the collector core 32 is inserted from the rear end of the collector 31, and the ballpoint pen tip 40 holding the writing ball 50 from the tip of the joint 60 is inserted. Then, the center core 41 of the ballpoint pen tip 40 is inserted into the collector core 32. The combined collector 31, collector core 32, joint 60 and ballpoint pen tip 40 are inserted from the rear end of the front shaft 11. Thereafter, the outer 20 is mounted on the inner periphery of the tip shaft 11 so as to cover the ballpoint pen tip 40. Alternatively, after the outer 20 is mounted on the inner periphery of the front shaft 11, the combined collector 31, collector core 32, joint 60, and ballpoint pen tip 40 may be inserted from the rear end of the front shaft 11 and assembled.
次に、インクの充填されているインクタンク13の外周に先軸11の後端をインクタンク13の先端がコレクター31の後端に当接するまで外挿させる。
最後に、インクタンク13を覆うようにして後軸12の先端の内周に先軸11の後端を挿入する。先軸11を後軸12に挿入する際は、後軸12の先端が先軸鍔部15に当接するまで挿入させる。
ここで、ボールペンチップ40及びインク供給部手30は、先軸11の内周に設けられた先軸前部内方突起16aとコレクター31のコレクター鍔部34aによって、位置決めが行われる。そのため、先軸前部内方突起16aからアウター先端部23までに、継手60とボールペンチップ40を挿入する必要がある。この時、継手60の介在部材63が弾性部材であるため、先端保持部34やアウター固定部21に垂直方向に寸法のずれが生じたとしても、弾性部材が収縮されることで、先軸前部内方突起16aからアウター先端部23に納めることができる。
Next, the rear end of the front shaft 11 is extrapolated on the outer periphery of the ink tank 13 filled with ink until the front end of the ink tank 13 contacts the rear end of the collector 31.
Finally, the rear end of the front shaft 11 is inserted into the inner periphery of the front end of the rear shaft 12 so as to cover the ink tank 13. When the front shaft 11 is inserted into the rear shaft 12, the front shaft 11 is inserted until the front end of the rear shaft 12 contacts the front shaft flange 15.
Here, the ball-point pen tip 40 and the ink supply unit hand 30 are positioned by a front shaft front inward protrusion 16a provided on the inner periphery of the front shaft 11 and a collector collar 34a of the collector 31. Therefore, it is necessary to insert the joint 60 and the ball-point pen tip 40 from the front shaft front inner protrusion 16a to the outer tip 23. At this time, since the interposition member 63 of the joint 60 is an elastic member, even if a dimensional deviation occurs in the vertical direction in the tip holding portion 34 or the outer fixing portion 21, the elastic member is contracted, so that the front shaft front The inner inward projection 16a can be accommodated in the outer tip 23.
この発明は、ボールペンやマーカーペンなどの筆記具に利用することができる。 The present invention can be used for writing instruments such as ballpoint pens and marker pens.
1 筆記具又はボールペン 10 軸筒
11 先軸 11a 先軸内方突起
11b 先軸外方突起 12 後軸
12a 後軸テーパー部 12b 後軸内方突起
13 インクタンク 13a インクタンク外方突起
14 先軸後部 15 先軸鍔部
16 先軸前部 16a 先軸前部内方突起
16b 肉厚部 16c先軸前部縮径孔
16d アウター挿入孔 16e グリップ部材
20 アウター
21 アウター固定部 22 アウターテーパー部
23 アウター先端部 24 後部挿入孔
25 前部挿入孔 30 インク供給部
31 コレクター 32 コレクター芯
33 フィン 34 先端保持部
34a コレクター鍔部 34b コレクター段部
34c コレクター当接部 40 筆記先端又はボールペンチップ
41 中芯 42 ホルダー
42a カシメ部 50 筆記ボール
60 継手 61 中心部材
61a 後方挿入孔 61b 中央挿入孔
61c 前方挿入孔 61d 後方円柱部後部
61e 中心部材鍔部 61f 後方円柱部前部
61g 中央円柱部 61h 前方円柱部
62 周辺部材 62a 周辺部材拡径部
62b 周辺部材内方突起 62c 周辺部材後方外周部
62d 周辺部材中央外周部 62e 周辺部材前方外周部
62f 周辺部材外方突部 62g 欠部
63 介在部材 63a介在部材後方円柱部
63b 連結部 63c介在部前方円錐部
64 空隙部
1 Writing instrument or ballpoint pen 10 shaft cylinder
11 Lead shaft 11a Lead shaft inward projection
11 b Protruding shaft outward 12 Rear shaft
12a Rear shaft taper 12b Rear shaft inward projection
13 Ink tank 13a Ink tank outward projection
14 Rear of the front shaft 15 Front shaft collar
16 Front shaft front 16a Front shaft front inward projection
16b Thick part 16c Front shaft front reduced diameter hole
16d Outer insertion hole 16e Grip member
20 outer
21 Outer fixing part 22 Outer taper part
23 Outer tip 24 Rear insertion hole
25 Front insertion hole 30 Ink supply section
31 Collector 32 Collector core
33 Fin 34 Tip holder
34a Collector collar 34b Collector step
34c Collector contact part 40 Writing tip or ballpoint pen tip
41 Center 42 Holder
42a Caulking part 50 Writing ball
60 Fitting 61 Center member
61a Rear insertion hole 61b Center insertion hole
61c Front insertion hole 61d Rear cylinder rear part
61e Center member collar 61f Rear cylinder front
61g Center cylinder 61h Front cylinder
62 Peripheral member 62a Diameter expansion part of peripheral member
62b Peripheral member inward projection 62c Peripheral member rear outer periphery
62d Peripheral member center outer periphery 62e Peripheral member front outer periphery
62f Peripheral member outer protrusion 62g Notch
63 Interposition member 63a Intermediary member rear cylinder
63b connecting part 63c interposition part front cone part
64 void
Claims (2)
ボールペン内部の圧力を調整しているコレクターと、
前記筆記先端及び前記コレクターを連結させる継手と、
前記筆記先端、前記コレクター及び前記継手を内部に収納する軸筒とを有する筆記具において、
前記継手は、少なくとも前記筆記先端と接続する中心部材と、前記中心部材から空隙部を介して離間した周辺部材と、前記中心部材と前記周辺部材とを接続して成形された介在部材とからなることで、前後方向に圧縮可能なクッション性を有するように形成されていることを特徴とする筆記具。 Writing tip,
A collector that adjusts the pressure inside the ballpoint pen,
A joint for connecting the writing tip and the collector;
In the writing instrument having the writing tip, the collector and the shaft cylinder that accommodates the joint inside,
The joint includes at least a central member connected to the writing tip, a peripheral member spaced from the central member via a gap, and an interposition member formed by connecting the central member and the peripheral member. Thus, the writing instrument is formed to have a cushioning property that can be compressed in the front-rear direction.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014080726A JP6401484B2 (en) | 2014-04-10 | 2014-04-10 | Writing instrument |
| EP15777299.7A EP3130476B1 (en) | 2014-04-10 | 2015-04-09 | Writing tool |
| TW104111446A TWI649219B (en) | 2014-04-10 | 2015-04-09 | Writing utensil |
| US15/302,409 US9889701B2 (en) | 2014-04-10 | 2015-04-09 | Writing implement |
| PCT/JP2015/061093 WO2015156352A1 (en) | 2014-04-10 | 2015-04-09 | Writing tool |
| CN201580017797.9A CN106132724B (en) | 2014-04-10 | 2015-04-09 | Writing implement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014080726A JP6401484B2 (en) | 2014-04-10 | 2014-04-10 | Writing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2015199303A JP2015199303A (en) | 2015-11-12 |
| JP6401484B2 true JP6401484B2 (en) | 2018-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2014080726A Active JP6401484B2 (en) | 2014-04-10 | 2014-04-10 | Writing instrument |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2018083397A (en) * | 2016-11-25 | 2018-05-31 | 三菱鉛筆株式会社 | Ballpoint pen |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11139080A (en) * | 1997-11-06 | 1999-05-25 | Mitsubishi Pencil Co Ltd | Double writing instrument |
| US6428235B1 (en) * | 1999-03-26 | 2002-08-06 | Mitsubishi Pencil Kabushiki Kaisha | Liquid applicator having ink color identification |
| JP2003220790A (en) * | 2002-01-30 | 2003-08-05 | Mitsubishi Pencil Co Ltd | Gas pressurized writing instruments and refills for writing instruments |
| JP2008055864A (en) * | 2006-09-04 | 2008-03-13 | Mitsubishi Pencil Co Ltd | Writing instrument |
| WO2013183744A1 (en) * | 2012-06-07 | 2013-12-12 | 三菱鉛筆株式会社 | Ball pen |
| JP5940899B2 (en) * | 2012-06-07 | 2016-06-29 | 三菱鉛筆株式会社 | Ballpoint pen |
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