JP3157872U

JP3157872U - Writing instrument

Info

Publication number: JP3157872U
Application number: JP2009009009U
Authority: JP
Inventors: 公彦間瀬
Original assignee: Pilot Ink Co Ltd
Current assignee: Pilot Ink Co Ltd
Priority date: 2009-12-18
Filing date: 2009-12-18
Publication date: 2010-03-04
Anticipated expiration: 2017-04-27

Abstract

【課題】圧入状態等で筆記具部材に負荷がかかる場合であっても、長期使用によるクラックが発生し難い筆記具を提供する。【解決手段】少なくとも一端を開口する筒状樹脂部材１と、筒状樹脂部材１の開口部に圧入される嵌入部材である頭冠２と、筒状樹脂部材１と頭冠２により係止される金属製クリップ３とを備える。クリップ３がクリップ本体３１と脚部３３からなり、脚部３３が筒状樹脂部材１内面と頭冠２外面との間で径方向に挟持される。筒状樹脂部材がポリカーボネートとポリエチレンテレフタレートを混合した樹脂で構成される。【選択図】図２The present invention provides a writing instrument that is unlikely to crack due to long-term use even when a load is applied to the writing instrument member in a press-fitted state or the like. A tubular resin member 1 that opens at least one end, a head crown 2 that is a fitting member that is press-fitted into an opening of the tubular resin member 1, and a tubular resin member 1 and the crown 2 that are engaged with each other. The metal clip 3 is provided. The clip 3 includes a clip body 31 and a leg portion 33, and the leg portion 33 is sandwiched in the radial direction between the inner surface of the tubular resin member 1 and the outer surface of the crown 2. The cylindrical resin member is made of a resin obtained by mixing polycarbonate and polyethylene terephthalate. [Selection] Figure 2

Description

本考案は、筆記具に関する。詳細には、筒状部材（例えば、軸筒やキャップ等）と嵌入部材（例えば、把持部材や頭冠等）を備えた筆記具に関する。 The present invention relates to a writing instrument. Specifically, the present invention relates to a writing instrument including a cylindrical member (for example, a shaft cylinder or a cap) and an insertion member (for example, a gripping member or a crown).

従来、筆記具に用いられる二部材を圧入嵌合により連結する技術が開示されている（例えば特許文献１参照）。
前記筆記具部材は、ポリカーボネート樹脂からなるキャップ本体にポリスチロール樹脂製頭冠が圧入嵌合されるものであり、頭冠の圧入部にトルエンとジクロロエタンの混合液を塗布することで軟化させて容易に圧入できるものである。
特開２０００−４３４６６号公報 Conventionally, a technique for connecting two members used in a writing instrument by press-fitting is disclosed (for example, see Patent Document 1).
The writing instrument member is formed by press fitting a polystyrene resin head crown to a cap body made of polycarbonate resin, and is easily softened by applying a mixed solution of toluene and dichloroethane to the press fitting portion of the crown. It can be press-fitted.
JP 2000-43466 A

前記キャップ本体に用いられるポリカーボネート樹脂は軽量で透明度が高く、耐衝撃性、耐熱性に優れているため筆記具部材に広く適用されているが耐油性が乏しいため、前記圧入状態で長期間使用する場合、薬品や手脂等の付着により圧入箇所にクラックを生じることがある。
特に、クリップ近傍に形成される圧入嵌合部分においては、ポケット等に差して保管する筆記具を使用時に取り出す際に頻繁に触るため、短期間でクラックを生じることがある。また、キャップ本体と頭冠でクリップ部材を挟持する場合には、クリップ部材の回転やガタツキを抑制するためにキャップ本体と頭冠との嵌合力を高める必要があるので、より短い期間でクラックを生じる虞がある。 The polycarbonate resin used in the cap body is lightweight and highly transparent, and has excellent impact resistance and heat resistance, so it is widely applied to writing instrument members, but it is poor in oil resistance, so when used for a long time in the press-fit state Cracks may occur at the press-fitting locations due to adhesion of chemicals and hand grease.
In particular, a press-fitting portion formed in the vicinity of the clip frequently touches when a writing instrument stored in a pocket or the like is taken out during use, and may crack in a short period of time. In addition, when the clip member is sandwiched between the cap body and the head crown, it is necessary to increase the fitting force between the cap body and the head crown in order to suppress the rotation and rattling of the clip member. May occur.

本考案は、前記問題を解決するものであって、圧入状態等で筆記具部材に負荷がかかる場合であっても、長期使用によるクラックが発生し難い筆記具を提供しようとするものである。
尚、本考案において、「上」とは頭冠（嵌入部材）圧入側を指し、「下」とはその反対側を指す。 The present invention is intended to solve the above-described problem and to provide a writing instrument that is unlikely to crack due to long-term use even when a load is applied to the writing instrument member in a press-fitted state or the like.
In the present invention, “upper” refers to the head crown (insertion member) press-fitting side, and “lower” refers to the opposite side.

本考案は、少なくとも一端を開口する筒状樹脂部材と、前記筒状樹脂部材の開口部に圧入される嵌入部材とを備えた筆記具であって、前記筒状樹脂部材がポリカーボネートとポリエチレンテレフタレートを混合した樹脂で構成されることを要件とする。
更に、前記筒状樹脂部材又は嵌入部材が、クリップ又はクリップ取付部を一体に備えてなることを要件とする。
更に、少なくとも一端を開口する筒状樹脂部材と、前記筒状樹脂部材の開口部に圧入される嵌入部材である頭冠と、前記筒状樹脂部材と頭冠により係止される金属製クリップ（本願請求項３においてはクリップ全体や樹脂製クリップ本体を取り付けたクリップ取付部材が金属製であるものを示す）とを備え、前記クリップがクリップ本体と脚部からなり、脚部が筒状樹脂部材内面と頭冠外面との間で径方向に挟持される筆記具であって、前記筒状樹脂部材がポリカーボネートとポリエチレンテレフタレートを混合した樹脂で構成されることを要件とする。
更には、前記嵌入部材がポリカーボネート樹脂又はＡＢＳ樹脂により構成されること、前記ポリカーボネートとポリエチレンテレフタレートが、９０：１０〜６０：４０の割合で配合されることを要件とする。 The present invention is a writing instrument comprising a cylindrical resin member that opens at least one end and a fitting member that is press-fitted into the opening of the cylindrical resin member, wherein the cylindrical resin member is a mixture of polycarbonate and polyethylene terephthalate. It is a requirement to be composed of the resin made.
Furthermore, it is a requirement that the cylindrical resin member or the fitting member is integrally provided with a clip or a clip mounting portion.
Furthermore, a cylindrical resin member that opens at least one end, a crown that is a fitting member that is press-fitted into the opening of the cylindrical resin member, and a metal clip that is locked by the cylindrical resin member and the crown ( In the present invention, the entire clip and the clip attachment member to which the resin clip main body is attached are made of metal), the clip is composed of the clip main body and the leg portion, and the leg portion is a tubular resin member. It is a writing instrument that is sandwiched in a radial direction between an inner surface and an outer surface of a crown, and the cylindrical resin member is made of a resin in which polycarbonate and polyethylene terephthalate are mixed.
Furthermore, it is required that the fitting member is made of polycarbonate resin or ABS resin, and that the polycarbonate and polyethylene terephthalate are blended in a ratio of 90:10 to 60:40.

本考案は請求項１により、圧入状態で長期間使用した場合であっても、薬品や手脂等の付着により圧入箇所にクラックを生じる虞がない。 According to the first aspect of the present invention, even when used in a press-fitted state for a long period of time, there is no possibility of causing cracks in the press-fitted part due to adhesion of chemicals, hand grease and the like.

請求項２により、クリップ近傍で顕著に発生するクラックを抑制できる。 According to the second aspect, it is possible to suppress cracks that occur remarkably in the vicinity of the clip.

請求項３により、嵌合力を高めた状態であってもクラックが発生する虞がなく、クリップ部材の回転やガタツキを確実に抑制できる。 According to the third aspect, there is no possibility of cracking even in a state in which the fitting force is increased, and the rotation and backlash of the clip member can be reliably suppressed.

請求項４により、頭冠等の嵌入部材の圧入箇所が変形することなく圧入状態を長期間維持できるので、クリップ部材の回転やガタツキをより確実に抑制できる。 According to the fourth aspect, the press-fitted portion of the fitting member such as the head crown can be maintained for a long time without being deformed, so that the rotation and backlash of the clip member can be more reliably suppressed.

請求項５により、筆記具としての強度を充分に備えた状態で、クラックがより生じ難いものとなる。 According to the fifth aspect, cracks are less likely to occur in a state where the strength as a writing instrument is sufficiently provided.

本考案の筆記具を構成する筒状樹脂部材は、少なくとも一端を開口し、該開口部に嵌入部材を圧入して連結されるものであり、具体的には、キャップ本体、首体、グリップ、軸筒等の形態で使用されるため、ユーザーが触れる外装部分に適用される。
前記筒状樹脂部材をポリカーボネートとポリエチレンテレフタレートを混合した樹脂で構成することで、使用により薬品や手脂等が圧入箇所に付着した状態を長期間継続しても、クラックが生じ難いものとなる。特に、筒状樹脂部材の圧入箇所やその近傍にゲート跡やウェルド等が形成される場合には、より高い効果を発現する。 The cylindrical resin member constituting the writing instrument of the present invention has at least one end opened and is connected by press-fitting an insertion member into the opening. Specifically, the cap body, neck body, grip, shaft Since it is used in the form of a cylinder or the like, it is applied to an exterior part touched by a user.
By forming the cylindrical resin member with a resin in which polycarbonate and polyethylene terephthalate are mixed, cracks are unlikely to occur even when a state in which chemicals, hand grease and the like are attached to the press-fitted portion for a long period of time. In particular, when a gate mark, a weld, or the like is formed at or near the press-fitted portion of the cylindrical resin member, a higher effect is exhibited.

嵌入部材は、前記筒状樹脂部材の開口部に圧入して連結されるものであり、具体的には、頭冠、クリップ、尾栓、ペン芯、ペン先ホルダー等の形態で使用される。
前記嵌入部材を構成する材質は、汎用の樹脂や金属等をいずれも使用できるが、圧入箇所の嵌合力を高く設定する場合には、ポリカーボネート樹脂やＡＢＳ（アクリロニトリル−ブタジエン−スチレン）樹脂により構成することが好ましい。これにより長期経時後も圧入部分が変形し難いものとなるため、嵌合部分のガタツキや抜けが生じ難いものとなる。 The fitting member is press-fitted and connected to the opening of the cylindrical resin member. Specifically, the fitting member is used in the form of a head crown, a clip, a tail plug, a pen core, a pen tip holder, or the like.
As the material constituting the fitting member, any of general-purpose resins and metals can be used. However, when the fitting force at the press-fitting location is set high, the fitting member is constituted by polycarbonate resin or ABS (acrylonitrile-butadiene-styrene) resin. It is preferable. This makes it difficult for the press-fitted portion to be deformed even after a long period of time.

特に、前記筒状樹脂部材や嵌入部材がクリップやクリップ取付部を一体に備えている場合、筆記具の保管時にポケットに差し込むときや、使用時にポケットから取り出すときに圧入部分（クリップの付根やクリップ取付部近傍の外面部分）を頻繁に触るため、短期間でクラックが生じ易くなる。そのため、ユーザーが接触する外側表面となる筒状樹脂部材をポリカーボネートとポリエチレンテレフタレートを混合した樹脂で構成することが有用となる。 In particular, when the cylindrical resin member or the fitting member is integrally provided with a clip or a clip mounting portion, when the writing instrument is stored in the pocket or when it is removed from the pocket during use (the base of the clip or the clip mounting) Since the outer surface portion near the portion is frequently touched, cracks are likely to occur in a short period of time. Therefore, it is useful to configure the cylindrical resin member that becomes the outer surface that the user contacts with a resin in which polycarbonate and polyethylene terephthalate are mixed.

また、クリップ本体と脚部を備えたクリップを用いる場合、前記脚部を筒状樹脂部材内面と頭冠の圧入部外面との間で径方向に挟持することで固定するため、クリップ部材の回転やガタツキを抑制することを目的に圧入箇所の嵌合力を高く設定する必要がある。特に、前記クリップ全体やクリップ取付部材（クリップ本体を樹脂製とした際に脚部となる部材）が金属製である場合（更には前記脚部に曲面を有する場合）、樹脂部材間で挟持される部分をより強固に挟持・固定する必要があるため、より高い嵌合力に設定される。
そのため、前述のクリップ近傍の外側表面（筒状樹脂部材でユーザーが頻繁に接触する箇所）に短期間でクラックが生じ易くなるので、前記筒状樹脂部材をポリカーボネートとポリエチレンテレフタレートを混合した樹脂で構成することにより、嵌合力を高めた状態であっても長期間クラックが発生することなく、クリップ部材の回転やガタツキを確実に抑制できる筆記具が得られる。 In addition, when using a clip having a clip body and a leg, the clip is rotated by holding the leg in the radial direction between the inner surface of the cylindrical resin member and the outer surface of the press-fitting portion of the crown. It is necessary to set the fitting force at the press-fitted portion high for the purpose of suppressing the backlash and backlash. In particular, when the entire clip or the clip mounting member (the member that becomes the leg when the clip main body is made of resin) is made of metal (and the leg has a curved surface), the clip is sandwiched between the resin members. Therefore, a higher fitting force is set.
For this reason, cracks are likely to occur in a short period of time on the outer surface in the vicinity of the aforementioned clip (where the user frequently contacts the cylindrical resin member), so the cylindrical resin member is made of a resin in which polycarbonate and polyethylene terephthalate are mixed. By doing so, a writing instrument that can reliably suppress the rotation and backlash of the clip member without cracking for a long period of time even when the fitting force is increased can be obtained.

前記筒状樹脂部材を構成するポリカーボネートとポリエチレンテレフタレートを混合した樹脂は、ポリカーボネートとポリエチレンテレフタレートが９０：１０〜６０：４０、好ましくは８５：１５〜６５：３５の割合で配合されることが好ましい。
前記割合により、前述の構成においてもクラックを生じることなく筆記具としての強度を充分に満たすと共に、部材の成形性も満たすことができる。
尚、前記筒状樹脂部材は、前記樹脂組成物中に着色剤を添加したり、部材表面に転写等を施すことにより装飾性を向上させることもできる。 The resin in which the polycarbonate and the polyethylene terephthalate constituting the cylindrical resin member are mixed is preferably blended in a ratio of polycarbonate: polyethylene terephthalate of 90:10 to 60:40, preferably 85:15 to 65:35.
By the said ratio, while fully satisfy | filling the intensity | strength as a writing instrument, without producing a crack also in the above-mentioned structure, the moldability of a member can also be satisfy | filled.
The tubular resin member can be improved in decorativeness by adding a colorant to the resin composition or by transferring the surface of the member.

前記筆記具の形態としては、各種ペン先を筆記先端部に装着したマーキングペン、ボールペン、万年筆、シャープペン、修正ペン、固形塗料繰出式ペン、接着材収容ペン、化粧料収容ペン等の汎用の筆記具が例示できる。また、前記筆記具に収容されるインキは、水性、油性のいずれであってもよい。
特に、前記マーキングペンとしては、例えば、軸筒内部に収容した繊維束からなるインキ吸蔵体にインキを含浸させ、筆記先端部にインキを供給する構造、軸筒内部に直接インキを収容し、櫛溝状のインキ流量調節部材や繊維束からなるインキ流量調節部材を介在させる構造、軸筒内部に直接インキを収容して、弁機構により前記筆記先端部に所定量のインキを供給する構造のマーキングペンが挙げられる。
ボールペンとしては、例えば、軸筒内部に収容した繊維束からなるインキ吸蔵体にインキを含浸させ、筆記先端部にインキを供給する構造、軸筒内部に直接インキを収容し、櫛溝状のインキ流量調節部材や繊維束からなるインキ流量調節部材を介在させる構造、ボールを先端部に装着したチップを直接又は接続部材を介して連結した軸筒にインキと逆流防止用の液栓を収容した構造、インキ収容管にインキと逆流防止用の液栓を収容したボールペンレフィルを軸筒内に収容した構造を例示できる。 As a form of the writing instrument, general-purpose writing instruments such as a marking pen, a ballpoint pen, a fountain pen, a sharpening pen, a correction pen, a solid paint feeding-type pen, an adhesive material storing pen, a cosmetic material storing pen, etc., with various pen tips attached to the writing tip. Can be illustrated. Moreover, the ink accommodated in the writing instrument may be either aqueous or oily.
In particular, as the marking pen, for example, an ink occlusion body composed of a fiber bundle housed in the shaft cylinder is impregnated with ink, and ink is supplied to the writing tip portion. Marking with a structure in which a groove-shaped ink flow rate adjusting member or an ink flow rate adjusting member made of a fiber bundle is interposed, a structure in which ink is directly stored in the shaft cylinder, and a predetermined amount of ink is supplied to the writing tip by a valve mechanism A pen is mentioned.
As a ball-point pen, for example, an ink occlusion body made of a fiber bundle housed inside a shaft cylinder is impregnated with ink, and ink is supplied to the writing tip. A structure in which an ink flow rate adjusting member made up of a flow rate adjusting member or a fiber bundle is interposed, and a structure in which a liquid stopper for preventing ink and backflow is contained in a shaft cylinder in which a chip with a ball attached to the tip is connected directly or via a connecting member An example is a structure in which a ballpoint pen refill containing an ink and a liquid stopper for preventing a backflow is accommodated in a shaft cylinder in an ink accommodating tube.

更に、前記筆記具は、筆記先端部をキャップにより覆うキャップ式や、ノック式、回転式、スライド式等の出没機構の作動によって、軸筒内に収納される筆記先端部が軸筒開口部から突出する出没式等の形態をとる。
また、相異なる形態のペン体を装着させたり、相異なる色調のインキを導出させるペン体を装着させた両頭式の筆記具であってもよい。
前記両頭式の筆記具としては、軸筒内に仕切り壁を設け、軸筒両端部にそれぞれ直接又は中継部材を介して筆記先端部を固着してなり、前記軸筒内にそれぞれ色調の異なる水性インキを収容してなる筆記具、或いは、軸筒内に、筆記先端部が軸筒両端部に位置するように二本のレフィルを収容してなり、前記二本のレフィル内にそれぞれ色調の異なる水性インキを収容してなる筆記具を例示できる。 Further, the writing tool has a writing tip portion that is housed in the shaft tube protruding from the shaft tube opening portion by the operation of a cap type that covers the writing tip portion with a cap, a knock type, a rotary type, a slide type or the like. It takes the form of a haunting ceremony.
Further, it may be a double-headed writing instrument on which a pen body of a different form is mounted or a pen body for deriving inks of different colors is mounted.
As the double-headed writing instrument, a partition wall is provided in the shaft cylinder, and the writing tip is fixed to the both ends of the shaft cylinder directly or via a relay member, respectively. In a writing instrument or a shaft tube, two refills are stored so that the writing tip is located at both ends of the shaft tube, and each of the two refills has a different color tone. The writing instrument which accommodates can be illustrated.

図１乃至図３に本考案の筆記具の実施形態を示す。 1 to 3 show an embodiment of the writing instrument of the present invention.

図１は本願構成の筆記具用キャップを示す縦断面図である。
前記筆記具用キャップは、筒状樹脂部材１と、頭冠２と、クリップ３と、ペン先シール部材４から構成される。 FIG. 1 is a longitudinal sectional view showing a writing instrument cap of the present application configuration.
The writing instrument cap includes a cylindrical resin member 1, a crown 2, a clip 3, and a nib seal member 4.

前記筒状樹脂部材１は、ポリカーボネートとポリエチレンテレフタレートを混合した樹脂組成物（ＰＣ：ＰＥＴ＝７５：２５に調製されたアロイ材からなる）の射出成形物であり、上下両端を開口し、側面にクリップ３を一体に設けたキャップ本体である。
前記筒状樹脂部材１の上端（頂部）には、頭冠２を取り付けるための取付孔（上方開口部）が設けられ、該取付孔の内周壁には、頭冠圧入時に縦方向に当接する段部と、環状の内向突起１１が設けられている。
また、前記取付孔下方には、仕切壁が形成され、該仕切壁の下方には、筆記具本体の挿着自在の挿着孔（下方開口部）が設けられている。前記仕切壁の下面には、ペン先シール部材４が圧入されている。 The cylindrical resin member 1 is an injection-molded product of a resin composition (made of an alloy material prepared in PC: PET = 75: 25) in which polycarbonate and polyethylene terephthalate are mixed. This is a cap body integrally provided with the clip 3.
An attachment hole (upper opening) for attaching the head crown 2 is provided at the upper end (top) of the cylindrical resin member 1, and the inner peripheral wall of the attachment hole comes into contact with the longitudinal direction when the head crown is press-fitted. A stepped portion and an annular inward projection 11 are provided.
In addition, a partition wall is formed below the attachment hole, and an insertion hole (lower opening) in which the writing instrument main body can be inserted is provided below the partition wall. A pen point seal member 4 is press-fitted into the lower surface of the partition wall.

前記ペン先シール部材４は、厚肉の環状支持部と、その中央の薄肉凹状のシール部とからなり、弾性材料（例えばエチレン−プロピレンゴム）により一体に形成されている。 The nib seal member 4 includes a thick annular support portion and a thin concave seal portion at the center thereof, and is integrally formed of an elastic material (for example, ethylene-propylene rubber).

前記頭冠２は、ＡＢＳ樹脂からなる樹脂成形物であり、該頭冠の外周面には、環状の外向突起２３が一体に形成されている。そのため、筒状樹脂部材１上方の取付孔に圧入した際に、筒状樹脂部材１内壁に形成される内向突起１１と乗り越え嵌合する構成となっている。組み付けにより、前記内向突起１１と頭冠２に設けた外向突起２３とが乗り越え嵌合され、筒状樹脂部材１の上方（圧入箇所）が径方向に押圧された状態（筒状樹脂部材１の径方向外側に負荷がかかった状態）で係止される。 The crown 2 is a resin molding made of ABS resin, and an annular outward projection 23 is integrally formed on the outer peripheral surface of the crown. Therefore, when it press-fits into the mounting hole above the cylindrical resin member 1, it is configured to get over the inward projection 11 formed on the inner wall of the cylindrical resin member 1. As a result of the assembly, the inward projection 11 and the outward projection 23 provided on the head crown 2 are fitted and fitted, and the upper side (press-fit portion) of the tubular resin member 1 is pressed in the radial direction (of the tubular resin member 1). It is locked in a state where a load is applied to the outside in the radial direction.

前記状態で長期間使用する場合、圧入部外面を頻繁に触るため（例えば、保管時にポケットに差し込むときや使用時にポケットから取り出すとき等）、短期間でクラックが生じ易くなるが、筒状樹脂部材をポリカーボネートとポリエチレンテレフタレートを混合した樹脂で構成することにより、前記クラックの発生を抑制できる。そのため、筆記具の外観を損なうことなく、不用意な部材の抜けやガタツキを抑制できる。 When used in the above state for a long period of time, the outer surface of the press-fitted part is frequently touched (for example, when inserted into a pocket during storage or taken out of the pocket during use). Is formed of a resin in which polycarbonate and polyethylene terephthalate are mixed, the generation of the cracks can be suppressed. Therefore, careless removal of members and rattling can be suppressed without impairing the appearance of the writing instrument.

図２は本願構成の筆記具の一部を示す縦断面図であり、図３は図２のＡ−Ａ断面を示す図である。
前記図２で一部を示す筆記具は、筒状樹脂部材１と、頭冠２と、クリップ３と首部材からなる外装を有し、内部にペン先出没機構（後端ノック機構）を備えると共に、ボールペンレフィルを収容するノック式ボールペン形態からなる。 FIG. 2 is a longitudinal sectional view showing a part of the writing instrument of the present application configuration, and FIG. 3 is a view showing an AA section of FIG.
The writing instrument partially shown in FIG. 2 has an exterior made up of a cylindrical resin member 1, a head crown 2, a clip 3 and a neck member, and is equipped with a pen tip retracting mechanism (rear end knock mechanism) inside. It consists of a knock-type ballpoint pen that accommodates a ballpoint refill.

前記筒状樹脂部材１（軸筒）は、ポリカーボネートとポリエチレンテレフタレートからなる樹脂組成物（ＰＣ：ＰＥＴ＝７０：３０に調製されたアロイ材からなる）の射出成形物であり、上下両端を開口している。上端面には、頭冠２を連設すると共に、ノック操作部を頭冠２内部から外部（上方向）に突出可能にさせる孔が開口される。また、下端にはペン先を備えたレフィルを収容し、首部材を連結するために開口しており、軸筒上端より突出されるノック操作部を押圧することで、該軸筒の下方（首部材の下端）よりペン先が出没可能となるように構成される。
更に、前記筒状樹脂部材１の内面には、環状に内向突起１１が形成される。 The cylindrical resin member 1 (shaft cylinder) is an injection-molded product of a resin composition made of polycarbonate and polyethylene terephthalate (made of an alloy material prepared in PC: PET = 70: 30), and is open at both upper and lower ends. ing. The upper end surface is provided with a hole that allows the knock crown 2 to project from the inside of the crown 2 to the outside (upward) while being continuously provided with the crown 2. In addition, the lower end accommodates a refill with a pen tip and is opened to connect the neck member. By pressing the knock operation portion protruding from the upper end of the shaft cylinder, The pen tip is configured to appear and disappear from the lower end of the member.
Furthermore, an inward projection 11 is formed in an annular shape on the inner surface of the cylindrical resin member 1.

前記クリップ３は、金属板を折り曲げ加工することにより得られ、玉部を備えたクリップ本体３１、基部３２、係合片となる脚部３３が一体に連設される。詳細には、前記クリップ本体３１の下端には玉部が一体に形成され、前記クリップ本体３１の上端には上下方向に延びる略円筒状の基部３２が一体に形成される。前記玉部が筒状樹脂部材１の外面と被挟持物を挟持する。更に、前記基部３２の下端には、略半円筒状の脚部３３が一体に形成される。
尚、前記クリップ本体３１は、樹脂成形物として別体で設け、基部３２に連結させた構造であってもよい。 The clip 3 is obtained by bending a metal plate, and a clip main body 31 provided with a ball part, a base part 32, and a leg part 33 serving as an engagement piece are integrally connected. Specifically, a ball portion is integrally formed at the lower end of the clip main body 31, and a substantially cylindrical base portion 32 extending in the vertical direction is integrally formed at the upper end of the clip main body 31. The said ball part clamps the outer surface of the cylindrical resin member 1 and a thing to be clamped. Further, a substantially semi-cylindrical leg portion 33 is integrally formed at the lower end of the base portion 32.
The clip body 31 may be provided as a separate resin molded product and connected to the base 32.

前記基部３２は、略円筒状に形成され、軸方向に内孔が貫設される。前記基部３２の上端面や下端面は、軸線に対して水平としているが、外観性を高めるために傾斜した傾斜面（傾斜カット面）とすることもできる。
前記基部３２の外径は、筒状樹脂部材１の内径よりも大きく設定される。それにより、基部３２が筒状樹脂部材１の上端開口部内に挿入されることを阻止できる。前記基部３２の内径は、筒状樹脂部材１の外径よりも小さく設定される。それにより、筒状樹脂部材１の上端部が基部３２内に挿入されることを阻止できる。更に、基部３２の下端面と筒状樹脂部材１の上端面との適正な当接が可能となる。
また、前記基部３２のクリップ本体３１の反対側には、軸方向に延びる切り欠きが貫設され、前記切り欠きにより基部３２が周方向に分割される。 The base 32 is formed in a substantially cylindrical shape, and has an inner hole penetrating in the axial direction. The upper end surface and the lower end surface of the base portion 32 are horizontal with respect to the axis, but may be inclined surfaces (inclined cut surfaces) that are inclined in order to improve the appearance.
The outer diameter of the base portion 32 is set larger than the inner diameter of the cylindrical resin member 1. Thereby, it can block that base 32 is inserted in the upper-end opening of cylindrical resin member 1. The inner diameter of the base portion 32 is set smaller than the outer diameter of the cylindrical resin member 1. Thereby, the upper end part of the cylindrical resin member 1 can be prevented from being inserted into the base part 32. Furthermore, proper contact between the lower end surface of the base portion 32 and the upper end surface of the cylindrical resin member 1 is possible.
In addition, a notch extending in the axial direction is provided on the opposite side of the base 32 to the clip main body 31, and the base 32 is divided in the circumferential direction by the notch.

前記脚部３３は筒状樹脂部材１の上端開口部に挿入される部分であり、クリップ本体３１の反対側の部分に、基部３２の下端から下方に突出するように延設される。また、前記脚部３３は、横断面において半円弧状となり、前記脚部３３の外面と軸心との径方向の距離が、基部３２外面と軸心との径方向の距離よりも小さく設定される。更に、前記脚部３３と前記基部３２の下端との接続部分には、筒状樹脂部材１の上端面と安定した状態で当接させるための段部が設けられている。
また、前記基部３２に設けられた軸方向に延びる切り欠きは、脚部３３まで軸方向に貫通しているので、前記切り欠きにより、脚部３３が周方向に分割される。 The leg portion 33 is a portion that is inserted into the upper end opening of the cylindrical resin member 1, and extends in a portion opposite to the clip main body 31 so as to protrude downward from the lower end of the base portion 32. The leg 33 is semicircular in cross section, and the radial distance between the outer surface of the leg 33 and the axial center is set smaller than the radial distance between the outer surface of the base 32 and the axial center. The Further, a connecting portion between the leg portion 33 and the lower end of the base portion 32 is provided with a step portion that is brought into contact with the upper end surface of the cylindrical resin member 1 in a stable state.
Further, since the notch extending in the axial direction provided in the base portion 32 penetrates the leg portion 33 in the axial direction, the leg portion 33 is divided in the circumferential direction by the notch.

前記頭冠２は、合成樹脂（例えばＰＣ樹脂）からなる成形体であり、鍔部２１と、該鍔部２１の下端から下方に突出する円筒状の取付筒部２２とが一体に連設されることにより構成されている。また、頭冠２の上端面は、ノック操作部を頭冠２内部から外部に突出可能にさせる孔が開口されている。 The crown 2 is a molded body made of a synthetic resin (for example, a PC resin), and a flange portion 21 and a cylindrical attachment tube portion 22 that protrudes downward from the lower end of the flange portion 21 are integrally provided. It is constituted by. The upper end surface of the crown 2 is provided with a hole that allows the knock operation portion to protrude from the inside of the crown 2 to the outside.

前記鍔部２１の外径は、クリップ３の基部３２の内径より大きく設定される。それにより、鍔部２１が基部３２内に挿入されることを阻止でき、鍔部２１の下端面とクリップ３の基部３２の上端面との適正な当接が可能となる。
前記クリップ３の基部３２の上端面を軸線に対して傾斜した傾斜面とした場合には、前記鍔部２１の下端面は軸線に対して傾斜した傾斜面（傾斜角度を前記基部３２の上端面の軸線に対する傾斜角度と略等しく設定する）として構成される。それにより、鍔部２１の下端面と基部３２の上端面との間に隙間が無くなり、優れた外観性を得ると同時に、鍔部２１の下端面と基部３２の上端面との安定した当接状態を得る。 The outer diameter of the flange portion 21 is set larger than the inner diameter of the base portion 32 of the clip 3. Thereby, it can prevent that the collar part 21 is inserted in the base 32, and the appropriate contact | abutting of the lower end surface of the collar part 21 and the upper end surface of the base 32 of the clip 3 is attained.
When the upper end surface of the base 32 of the clip 3 is an inclined surface inclined with respect to the axis, the lower end surface of the flange portion 21 is an inclined surface inclined with respect to the axis (the inclination angle is set to the upper end surface of the base 32). Is set to be substantially equal to the inclination angle with respect to the axis of Thereby, there is no gap between the lower end surface of the flange portion 21 and the upper end surface of the base portion 32, and an excellent appearance is obtained. At the same time, stable contact between the lower end surface of the flange portion 21 and the upper end surface of the base portion 32 is achieved. Get state.

前記取付筒部２２の下端部の外周面には、外向突起２３が形成される。前記頭冠２の取付筒部２３を筒状樹脂部材１の上端開口部に挿入（圧入）した際、前記外向突起２３と筒状樹脂部材１の内向突起１１とが乗り越え係止される。それにより、筒状樹脂部材１の上端開口部から頭冠２が脱落することを防止できる。更に、前記内向突起１１の係合面及び外向突起２３の係合面は軸線に対して略垂直面となっており、それにより、筒状樹脂部材１の上端開口部から頭冠２が抜け落ちることを確実に阻止できる。 An outward projection 23 is formed on the outer peripheral surface of the lower end portion of the mounting cylinder portion 22. When the mounting cylinder portion 23 of the head crown 2 is inserted (press-fitted) into the upper end opening of the cylindrical resin member 1, the outward projection 23 and the inward projection 11 of the cylindrical resin member 1 get over and are locked. Thereby, it is possible to prevent the crown 2 from dropping off from the upper end opening of the cylindrical resin member 1. Further, the engagement surface of the inward projection 11 and the engagement surface of the outward projection 23 are substantially perpendicular to the axis, and thereby the crown 2 falls out of the upper end opening of the cylindrical resin member 1. Can be reliably prevented.

前記クリップ３を取り付ける際、クリップ３の脚部３３を筒状樹脂部材１内面と頭冠２の取付筒部２２との間で径方向に挟持することで固定される（図３参照）。
具体的には、クリップ３の基部３２内部に基部３２の上端開口部より頭冠２の取付筒部２２を挿通し、クリップ３の基部３２内面と脚部３３を頭冠２の取付筒部２２外面に密接させる。そして、前記クリップ３の基部３２及び脚部３３が取付状態にある頭冠２の取付筒部２２を、筒状樹脂部材１の上端開口部に挿着し、取付筒部２２の外向突起２３と筒状樹脂部材１の内向突起１１とを乗り越え係止させる。このとき、クリップ３の基部３２の上端面が頭冠２の鍔部２１の下端面に当接されるとともにクリップ３の基部３２の下端面が筒状樹脂部材１の上端面に当接される。それにより、クリップ３の基部３２が鍔部２１の下端面と筒状樹脂部材１の上端面とで上下に挟持される。更にこのとき、前記脚部３３が、頭冠２の取付筒部２２外面と筒状樹脂部材１の上端開口部内面とで径方向に挟持される。 When the clip 3 is attached, the leg portion 33 of the clip 3 is fixed by being sandwiched in the radial direction between the inner surface of the tubular resin member 1 and the attachment tube portion 22 of the crown 2 (see FIG. 3).
Specifically, the mounting tube 22 of the head crown 2 is inserted into the base 32 of the clip 3 from the upper end opening of the base 32, and the inner surface of the base 32 and the leg 33 of the clip 3 are connected to the mounting tube 22 of the head crown 2. Close to the outside. And the attachment cylinder part 22 of the crown 2 in which the base part 32 and the leg part 33 of the said clip 3 are attached is inserted in the upper end opening part of the cylindrical resin member 1, and the outward protrusion 23 of the attachment cylinder part 22 and The inward projection 11 of the cylindrical resin member 1 is overcome and locked. At this time, the upper end surface of the base portion 32 of the clip 3 is brought into contact with the lower end surface of the collar portion 21 of the head crown 2 and the lower end surface of the base portion 32 of the clip 3 is brought into contact with the upper end surface of the cylindrical resin member 1. . Thereby, the base 32 of the clip 3 is vertically sandwiched between the lower end surface of the flange portion 21 and the upper end surface of the cylindrical resin member 1. Further, at this time, the leg portion 33 is sandwiched in the radial direction between the outer surface of the mounting tube portion 22 of the head crown 2 and the inner surface of the upper end opening portion of the tubular resin member 1.

前記脚部３３を頭冠２（取付筒部２２外面）と筒状樹脂部材１（内面）とで径方向に挟持することで、筒状樹脂部材１の挟持部分が径方向に押圧された状態（筒状樹脂部材１が径方向外側に負荷がかかった状態）で係止される。
前記状態で長期間使用する場合、圧入部外面を頻繁に触るため（例えば、保管時にポケットに差し込むときや使用時にポケットから取り出すとき等）、短期間でクラックが発生し易くなるが、筒状樹脂部材１をポリカーボネートとポリエチレンテレフタレートを混合した樹脂で構成することにより、前記クラックの発生を抑制できる。そのため、筆記具の外観を損なうことなく、クリップ３の回転やガタツキを防止できる。 A state in which the sandwiched portion of the cylindrical resin member 1 is pressed in the radial direction by sandwiching the leg portion 33 between the crown 2 (outer surface of the mounting cylinder portion 22) and the cylindrical resin member 1 (inner surface). The cylindrical resin member 1 is locked in a state where a load is applied to the outside in the radial direction.
When used for a long period of time in the above state, the outer surface of the press-fitted part is frequently touched (for example, when inserted into a pocket during storage or taken out of the pocket during use). By forming the member 1 with a resin in which polycarbonate and polyethylene terephthalate are mixed, the occurrence of the cracks can be suppressed. Therefore, the rotation and rattling of the clip 3 can be prevented without impairing the appearance of the writing instrument.

本考案の実施の形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows embodiment of this invention. 本考案の別の実施の形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows another embodiment of this invention. 図２のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG.

１筒状樹脂部材
１１内向突起
２頭冠
２１鍔部
２２取付筒部
２３外向突起
３クリップ
３１クリップ本体
３２基部
３３脚部
４ペン先シール部材 DESCRIPTION OF SYMBOLS 1 Cylindrical resin member 11 Inward protrusion 2 Head crown 21 Gutter part 22 Mounting cylinder part 23 Outward protrusion 3 Clip 31 Clip main body 32 Base part 33 Leg part 4 Nib seal member

Claims

A writing instrument comprising a cylindrical resin member having at least one end opened, and a fitting member press-fitted into the opening of the cylindrical resin member, wherein the cylindrical resin member is made of a resin in which polycarbonate and polyethylene terephthalate are mixed Writing instrument characterized by being made.

The writing instrument according to claim 1, wherein the cylindrical resin member or the fitting member is integrally provided with a clip or a clip mounting portion.

A cylindrical resin member that opens at least one end, a crown that is a fitting member that is press-fitted into the opening of the cylindrical resin member, and a metal clip that is locked by the cylindrical resin member and the crown. The clip comprises a clip body and a leg, and the leg is sandwiched in a radial direction between the inner surface of the tubular resin member and the outer surface of the crown, wherein the tubular resin member is made of polycarbonate and polyethylene terephthalate. A writing instrument comprising a mixed resin.

The writing instrument according to any one of claims 1 to 3, wherein the fitting member is made of polycarbonate resin or ABS resin.

The writing instrument according to any one of claims 1 to 4, wherein the polycarbonate and polyethylene terephthalate are blended in a ratio of 90:10 to 60:40.