JP5653718B2

JP5653718B2 - Writing instrument

Info

Publication number: JP5653718B2
Application number: JP2010242832A
Authority: JP
Inventors: 岩田　久嗣; 久嗣岩田
Original assignee: Pilot Ink Co Ltd; Pilot Corp
Current assignee: Pilot Ink Co Ltd; Pilot Corp
Priority date: 2010-10-28
Filing date: 2010-10-28
Publication date: 2015-01-14
Anticipated expiration: 2030-10-28
Also published as: JP2012091471A

Description

本発明は、筆記具に関する。詳細には、軸筒の前端の取付孔に棒状のペン体を取り付けた筆記具に関する。 The present invention relates to a writing instrument. Specifically, the present invention relates to a writing instrument in which a rod-shaped pen body is attached to an attachment hole at a front end of a shaft cylinder.

従来、この種の筆記具において、例えば、特許文献１には、ペン芯（本願のペン体に相当）を、ペン芯保持体（本願のホルダーに相当）を介して軸（本願の軸筒に相当）に取り付けた筆記具が開示されている。 Conventionally, in this type of writing instrument, for example, Patent Document 1 discloses a pen core (corresponding to the pen body of the present application) and a shaft (corresponding to the shaft cylinder of the present application) via a pen core holder (corresponding to the holder of the present application). ) Is disclosed.

実用新案登録第２５３９２７３号公報Utility Model Registration No. 2539273

前記従来の筆記具は、ペン芯保持体が、軸内面の複数のリブに圧入されているため、軸の前端部の外径が太くなり、ペン芯と軸の前端部との外径の差が大きくなり、筆記具前端部の外観性が損なわれるおそれがある。また、前記従来の筆記具は、ペン芯保持具と軸内面との圧入嵌合状態が各部品の寸法ばらつきや経時変化等で緩むと、容易にペン芯が軸から脱落するおそれがある。 In the conventional writing instrument, since the pen core holding body is press-fitted into the plurality of ribs on the inner surface of the shaft, the outer diameter of the front end portion of the shaft is increased, and there is a difference in outer diameter between the pen core and the front end portion of the shaft. This may increase the appearance of the front end of the writing instrument. Further, in the conventional writing instrument, when the press-fitting state between the pen core holder and the inner surface of the shaft is loosened due to dimensional variation of each part or change with time, the pen core may easily fall off the shaft.

本発明は、前記従来の問題点を解決するものであって、筆記具の前端部の外観性が損なわれることがなく、且つ、各部品の寸法ばらつきや経時変化等でペン体が軸筒から脱落することを回避できる筆記具を提供しようとするものである。 The present invention solves the above-mentioned conventional problems, the appearance of the front end portion of the writing instrument is not impaired, and the pen body is dropped from the shaft cylinder due to dimensional variation of each part, change over time, etc. It is intended to provide a writing instrument that can avoid this.

本願発明は、軸筒２の前端の取付孔３に棒状のペン体４を取り付けた筆記具であって、前記取付孔３が大内径部３１と該大内径部３１の後方に連設される小内径部３２とを備え、前記ペン体４の外面に環状のホルダー５を固着し、前記ホルダー５の後端より後方にペン体４を突出させ、前記ホルダー５の外面を前記大内径部３１の内面に圧入固着し、前記ホルダー５より後方のペン体４外面を前記小内径部３２の内面に圧入固着し、前記ホルダー５の外面に軸方向の溝５２ａを形成し、前記ホルダー５の外面と前記大内径部３１の内面との間に第一の空気通路７を形成し、前記小内径部３２の内面に軸方向の溝３２ａを形成し、前記ペン体４の外面と前記小内径部３２の内面との間に第二の空気通路８を形成し、前記第一の空気通路７と前記第二の空気通路８とを連通させ、前記軸筒２の内部と外部とを通気可能に連通し、前記ホルダー５の前端部内面に、ペン体４の外面に係合する前側取付部５１を設け、前記ホルダー５の後端部外面に、大内径部３１内面に圧入固着する後側取付部５２を設け、前記後側取付部５２の外面に軸方向の溝５２ａを形成し、外面に前記軸方向の溝５２ａを備えたホルダー５の内面とペン体４の外面との間に環状の隙間９を設けたことを要件とする。 The present application onset bright, a writing instrument in the mounting hole 3 of the front end of the barrel 2 fitted with a rod-like pen body 4, the mounting hole 3 is provided continuously to the rear of the large inner diameter portion 31 and the large-diameter portion 31 A small inner diameter portion 32, an annular holder 5 is fixed to the outer surface of the pen body 4, the pen body 4 is protruded rearward from the rear end of the holder 5, and the outer surface of the holder 5 is set to the large inner diameter portion 31. The outer surface of the pen body 4 behind the holder 5 is press-fitted and fixed to the inner surface of the small inner diameter portion 32, and an axial groove 52 a is formed on the outer surface of the holder 5. A first air passage 7 is formed between the inner surface of the large inner diameter portion 31 and an axial groove 32a is formed on the inner surface of the small inner diameter portion 32, so that the outer surface of the pen body 4 and the small inner diameter portion are formed. A second air passage 8 is formed between the inner surface of the first air passage 7 and the inner surface of the first air passage 7. A second air passage 8 communicates, the inside and the outside of the barrel 2 through vent capable communicating the front end portion inner surface of the holder 5 is provided with a front mounting portion 51 for engaging the outer surface of the pen body 4 A rear mounting portion 52 that is press-fitted and fixed to the inner surface of the large inner diameter portion 31 is provided on the outer surface of the rear end portion of the holder 5, an axial groove 52 a is formed on the outer surface of the rear mounting portion 52, and the shaft is formed on the outer surface. It is a requirement that an annular gap 9 is provided between the inner surface of the holder 5 having the directional groove 52 a and the outer surface of the pen body 4 .

本願発明の筆記具１は、ホルダー５の外面に軸方向の溝５２ａを形成し、ホルダー５の外面と大内径部３１の内面との間に第一の空気通路７を形成し、小内径部３２の内面に軸方向の溝３２ａを形成し、ペン体４の外面と前記小内径部３２の内面との間に第二の空気通路８を形成し、第一の空気通路７と第二の空気通路８とを連通させ、軸筒２の内部と外部とを通気可能に連通したことにより、空気通路を確保するために軸筒２の前端部の内径を大きくすることが不要となり、ペン体４と軸筒２の前端部との外径の差を大きくせず、筆記具１の前端部の外観性が損なわれることがない。 Writing instrument 1 of the present application onset Ming, a groove 52a in the axial direction on the outer surface of the holder 5, the first air passage 7 is formed between the outer surface and the inner surface of the large inner diameter portion 31 of the holder 5, the small diameter portion An axial groove 32a is formed on the inner surface of 32, a second air passage 8 is formed between the outer surface of the pen body 4 and the inner surface of the small inner diameter portion 32, and the first air passage 7 and the second air passage 8 are formed. By connecting the air passage 8 and allowing the inside and the outside of the shaft tube 2 to be ventilated, it is not necessary to increase the inner diameter of the front end portion of the shaft tube 2 in order to secure the air passage. Thus, the difference in outer diameter between the front end portion of the shaft cylinder 2 and the front end portion of the shaft cylinder 2 is not increased, and the appearance of the front end portion of the writing instrument 1 is not impaired.

本願発明の筆記具１は、前記ホルダー５の外面を前記大内径部３１の内面に圧入固着し、前記ホルダー５より後方のペン体４外面を前記小内径部３２の内面に圧入固着したこと（即ち、ペン体４を軸筒２に直接取り付ける部分と、ペン体４を軸筒２にホルダー５を介して取り付ける部分を備えること）により、各部品の寸法ばらつきや経時変化等でどちらか一方の取付部分の圧入嵌合状態が緩んでも、ペン体４が軸筒２から脱落することを回避できる。 Writing instrument 1 of the present application onset Ming, that the holder 5 of the outer surface is press-fitted fixed to the inner surface of the large inner diameter portion 31, and pressed secured behind the pen body 4 outer surface from the holder 5 on the inner surface of the small inner diameter portion 32 ( That is, by providing a part for directly attaching the pen body 4 to the shaft cylinder 2 and a part for attaching the pen body 4 to the shaft cylinder 2 via the holder 5) It is possible to avoid the pen body 4 from falling off the shaft tube 2 even if the press-fitting state of the attachment portion is loosened.

本願発明の筆記具１は、前記後側取付部５２の外面に軸方向の溝５２ａを形成し、外面に前記軸方向の溝５２ａを備えたホルダー５内面とペン体４との間に環状の隙間９を設けたことにより、後側取付部５２が径方向内方に容易に変形可能となり、後側取付部５２を大内径部３１に容易に圧入嵌合させることできる。 Writing instrument 1 of the present application onset Ming, the outer surface forming an axial groove 52a of the rear mounting portion 52, an annular between the holder 5 inside surface and the pen body 4 provided with the axial groove 52a on the outer surface By providing the gap 9, the rear attachment portion 52 can be easily deformed radially inward, and the rear attachment portion 52 can be easily press-fitted into the large inner diameter portion 31.

本発明は、筆記具の前端部の外観性が損なわれることがなく、且つ、各部品の寸法ばらつきや経時変化等でペン体が軸筒から脱落することを回避できる。 According to the present invention, the appearance of the front end portion of the writing instrument is not impaired, and the pen body can be prevented from falling off the shaft tube due to the dimensional variation of each part or a change with time.

本発明の実施の形態の要部拡大縦断面図である。It is a principal part expanded longitudinal cross-sectional view of embodiment of this invention. 図１のＡ−Ａ線縦断面図である。FIG. 2 is a vertical sectional view taken along line AA in FIG. 1. 図１のＢ−Ｂ線縦断面図である。It is a BB line longitudinal cross-sectional view of FIG. 本発明の実施の形態の要部縦断面図である。It is a principal part longitudinal cross-sectional view of embodiment of this invention.

本発明の実施の形態を図１乃至図４に示す。
本実施の形態の筆記具１は、ペン体４と、該ペン体４の外面に固着されるホルダー５と、前記ペン体４及びホルダー５が固着される軸筒２と、該軸筒２内に収容されるインキ吸蔵体６とからなる。 An embodiment of the present invention is shown in FIGS.
The writing instrument 1 according to the present embodiment includes a pen body 4, a holder 5 fixed to the outer surface of the pen body 4, a shaft cylinder 2 to which the pen body 4 and the holder 5 are fixed, and the shaft cylinder 2. It comprises an ink storage body 6 to be accommodated.

・ペン体
前記ペン体４は、棒状の繊維束の樹脂加工体または多孔質体からなる。前記ペン体４の前端は、砲弾状に研削される。前記ペン体４の前端近傍の外周面には、環状凹部４１が形成される。 -Pen body The said pen body 4 consists of a resin processed body or porous body of a rod-shaped fiber bundle. The front end of the pen body 4 is ground like a bullet. An annular recess 41 is formed on the outer peripheral surface near the front end of the pen body 4.

・ホルダー
前記ホルダー５は環状の合成樹脂の成形体からなる。前記ホルダー５の前端部内周面には、環状凸部よりなる前側取付部５１が形成される。前記前側取付部５１（環状凸部）が前記ペン体４の環状凹部４１に係合される。前記ホルダー５の後端部外面には、後側取付部５２が形成されるとともに、前記ホルダー５の後端部外面には、複数本の軸方向の溝５２ａが形成される。 -Holder The holder 5 is made of an annular synthetic resin molded body. On the inner peripheral surface of the front end portion of the holder 5, a front attachment portion 51 made of an annular convex portion is formed. The front mounting portion 51 (annular convex portion) is engaged with the annular concave portion 41 of the pen body 4. A rear mounting portion 52 is formed on the outer surface of the rear end portion of the holder 5, and a plurality of axial grooves 52 a are formed on the outer surface of the rear end portion of the holder 5.

・軸筒
前記軸筒２の前端部内面には取付孔３が形成される。前記取付孔３の内面が、大内径部３１と該大内径部３１の後方に連設される小内径部３２とを備える。前記小内径部３２と前記大内径部３１との間には段部３３が形成される。前記小内径部３２には、複数本の軸方向の溝３２ａが形成される。（図１及び図２参照） -Shaft cylinder A mounting hole 3 is formed in the inner surface of the front end portion of the shaft cylinder 2. The inner surface of the mounting hole 3 includes a large inner diameter portion 31 and a small inner diameter portion 32 that is connected to the rear of the large inner diameter portion 31. A step portion 33 is formed between the small inner diameter portion 32 and the large inner diameter portion 31. A plurality of axial grooves 32 a are formed in the small inner diameter portion 32. (See Fig. 1 and Fig. 2)

・インキ吸蔵体
前記インキ吸蔵体６は、繊維束加工体または多孔質体からなり、内部にインキが含浸される。前記インキ吸蔵体６の前端には、ペン体４の後端が突き刺し接続される。 Ink occlusion body The ink occlusion body 6 is made of a fiber bundle processed body or a porous body, and is impregnated with ink. The rear end of the pen body 4 is pierced and connected to the front end of the ink storage body 6.

・ペン体の取付
前記ペン体４の環状凹部４１に、前記ホルダー５の環状凸部よりなる前側取付部５１が係合される。それにより、ペン体４の前端近傍の外面にホルダー５が固着される。 -Attachment of pen body The front side attachment part 51 which consists of the annular convex part of the said holder 5 is engaged with the annular recessed part 41 of the said pen body 4. As shown in FIG. Thereby, the holder 5 is fixed to the outer surface near the front end of the pen body 4.

次に、前記ペン体４及びホルダー５を軸筒２の取付孔３に挿入し、取付孔３の大内径部３１にホルダー５の後側取付部５２を圧入固着するとともに、取付孔３の小内径部３２にペン体４の外面を圧入固着する。前記ホルダー５の後端が小内径部３２と大内径部３１の間の段部３３に当接する。 Next, the pen body 4 and the holder 5 are inserted into the mounting hole 3 of the shaft cylinder 2, and the rear mounting portion 52 of the holder 5 is press-fitted and fixed to the large inner diameter portion 31 of the mounting hole 3. The outer surface of the pen body 4 is press-fitted and fixed to the inner diameter portion 32. The rear end of the holder 5 abuts on a step portion 33 between the small inner diameter portion 32 and the large inner diameter portion 31.

前記ペン体４及びホルダー５が軸筒２の取付孔３に圧入固着された際、ホルダー５の後側取付部５２の外面と大内径部３１の内面との間に、後側取付部５２の外面の軸方向の溝５２ａにより、軸方向の第一の空気通路７が形成される。それと同時に、ペン体４の外面と小内径部３２の内面との間に、小内径部３２の軸方向の溝３２ａにより、軸方向の第二の空気通路８が形成される。前記第一の空気通路７と第二の空気通路８とが、大内径部３１と小内径部３２の間の段部３３において連通される。 When the pen body 4 and the holder 5 are press-fitted and fixed in the mounting hole 3 of the shaft cylinder 2, the rear mounting portion 52 is interposed between the outer surface of the rear mounting portion 52 and the inner surface of the large inner diameter portion 31. A first air passage 7 in the axial direction is formed by the axial groove 52a on the outer surface. At the same time, the second air passage 8 in the axial direction is formed between the outer surface of the pen body 4 and the inner surface of the small inner diameter portion 32 by the axial groove 32 a of the small inner diameter portion 32. The first air passage 7 and the second air passage 8 communicate with each other at a step portion 33 between the large inner diameter portion 31 and the small inner diameter portion 32.

また、前記後側取付部５２が位置するホルダー５の内面とペン体４の外面との間に環状の隙間９が設けられる。 Further, an annular gap 9 is provided between the inner surface of the holder 5 where the rear mounting portion 52 is located and the outer surface of the pen body 4.

本実施の形態の筆記具１は、取付孔３が大内径部３１と該大内径部３１の後方に連設される小内径部３２とを備え、ペン体４の外面に環状のホルダー５を固着し、前記ホルダー５の後端より後方にペン体４を突出させ、前記ホルダー５の外面を前記大内径部３１の内面に圧入固着し、前記ホルダー５より後方のペン体４外面を前記小内径部３２の内面に圧入固着し、前記ホルダー５の外面に軸方向の溝５２ａを形成し、前記ホルダー５の外面と前記大内径部３１の内面との間に第一の空気通路７を形成し、前記小内径部３２の内面に軸方向の溝３２ａを形成し、前記ペン体４の外面と前記小内径部３２の内面との間に第二の空気通路８を形成し、前記第一の空気通路７と前記第二の空気通路８とを連通させ、前記軸筒２の内部と外部とを通気可能に連通したことにより、筆記具の前端部の外観性が損なわれることがなく、且つ、各部品の寸法ばらつきや経時変化等でペン体４が軸筒２から脱落することを回避できる。 The writing instrument 1 according to the present embodiment includes a large inner diameter portion 31 and a small inner diameter portion 32 that is connected to the rear of the large inner diameter portion 31, and the annular holder 5 is fixed to the outer surface of the pen body 4. Then, the pen body 4 is projected rearward from the rear end of the holder 5, the outer surface of the holder 5 is press-fitted and fixed to the inner surface of the large inner diameter portion 31, and the outer surface of the pen body 4 behind the holder 5 is fixed to the small inner diameter. It is press-fitted and fixed to the inner surface of the portion 32, an axial groove 52 a is formed on the outer surface of the holder 5, and a first air passage 7 is formed between the outer surface of the holder 5 and the inner surface of the large inner diameter portion 31. An axial groove 32 a is formed on the inner surface of the small inner diameter portion 32, a second air passage 8 is formed between the outer surface of the pen body 4 and the inner surface of the small inner diameter portion 32, and the first The air passage 7 and the second air passage 8 communicate with each other, and the inside and outside of the shaft tube 2 are ventilated. By communicating with the ability without appearance of the front end portion of the writing instrument is impaired, and, the pen body 4 in dimensional variation or aging of each part is prevented from being falling off from the shaft tube 2.

また、本実施の形態の筆記具１は、後側取付部５２が位置するホルダー５の内面とペン体４の外面との間に環状の隙間９を設けたことにより、後側取付部５２が径方向内方に容易に変形可能となり、後側取付部５２を大内径部３１に容易に圧入嵌合させることできる。 In addition, the writing instrument 1 of the present embodiment has an annular gap 9 between the inner surface of the holder 5 where the rear mounting portion 52 is located and the outer surface of the pen body 4, so that the rear mounting portion 52 has a diameter. The rear mounting portion 52 can be easily press-fitted and fitted into the large inner diameter portion 31.

１筆記具
２軸筒
３取付孔
３１大内径部
３２小内径部
３２ａ軸方向の溝
３３段部
４ペン体
４１環状凹部
５ホルダー
５１前側取付部
５２後側取付部
５２ａ軸方向の溝
６インキ吸蔵体
７第一の空気通路
８第二の空気通路
９環状の隙間 DESCRIPTION OF SYMBOLS 1 Writing instrument 2 Shaft cylinder 3 Mounting hole 31 Large inner diameter part 32 Small inner diameter part 32a Axial groove | channel 33 Step part
4 Pen body 41 Annular recess 5 Holder 51 Front mounting part 52 Rear mounting part 52a Axial groove 6 Ink occlusion body 7 First air passage 8 Second air passage 9 Annular gap

Claims

A writing instrument in which a rod-shaped pen body is attached to an attachment hole at a front end of a shaft cylinder, wherein the attachment hole includes a large inner diameter portion and a small inner diameter portion provided continuously behind the large inner diameter portion. An annular holder is fixed to the outer surface, a pen body is projected rearward from the rear end of the holder, the outer surface of the holder is press-fitted and fixed to the inner surface of the large inner diameter portion, and the outer surface of the pen body rearward from the holder is Press-fixed to the inner surface of the small inner diameter portion, forming an axial groove on the outer surface of the holder, forming a first air passage between the outer surface of the holder and the inner surface of the large inner diameter portion, An axial groove is formed on the inner surface of the part, a second air passage is formed between the outer surface of the pen body and the inner surface of the small inner diameter portion, and the first air passage and the second air passage preparative communicated, through breathable to communicate the inside and the outside of the barrel, the front end of the holder Provided on the inner surface with a front mounting portion that engages with the outer surface of the pen body, provided on the outer surface of the rear end portion of the holder with a rear mounting portion that is press-fitted to the inner surface of the large inner diameter portion, and mounted on the outer surface of the rear mounting portion. A writing instrument , wherein an annular gap is provided between an inner surface of a holder having an axial groove on an outer surface and an outer surface of the pen body .