JP3933600B2 - Refill unit - Google Patents

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Publication number
JP3933600B2
JP3933600B2 JP2003107568A JP2003107568A JP3933600B2 JP 3933600 B2 JP3933600 B2 JP 3933600B2 JP 2003107568 A JP2003107568 A JP 2003107568A JP 2003107568 A JP2003107568 A JP 2003107568A JP 3933600 B2 JP3933600 B2 JP 3933600B2
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Japan
Prior art keywords
tip
refill unit
tube
press
ink
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JP2003107568A
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Japanese (ja)
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JP2004314317A (en
Inventor
明 深井
慶 大本
規 高力
京子 小林
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Mitsubishi Pencil Co Ltd
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Mitsubishi Pencil Co Ltd
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Priority to JP2003107568A priority Critical patent/JP3933600B2/en
Application filed by Mitsubishi Pencil Co Ltd filed Critical Mitsubishi Pencil Co Ltd
Priority to EP04716767A priority patent/EP1607238B1/en
Priority to KR1020057016405A priority patent/KR20050104416A/en
Priority to DE602004027016T priority patent/DE602004027016D1/en
Priority to US10/548,125 priority patent/US7600938B2/en
Priority to CN2008101692343A priority patent/CN101372189B/en
Priority to EP09007257A priority patent/EP2123473A1/en
Priority to PCT/JP2004/002601 priority patent/WO2004078489A1/en
Publication of JP2004314317A publication Critical patent/JP2004314317A/en
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Publication of JP3933600B2 publication Critical patent/JP3933600B2/en
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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、ノック機構により軸筒先端部から出没可能で、かつノック作動に連動した加圧機構を有するボールペンタイプの塗布具に搭載される合成樹脂製のリフィールユニットに関する。
【０００２】
【従来の技術】
従来、ボールペンタイプの筆記具は、軸筒内にインキを直接収納した直詰めタイプや軸筒内に収納するリフィールユニットのインキ収容管にインキを詰めたものがあるが、いずれも軸筒ないしはインキ収容管の先端部に直接ボールペンチップを圧入して装着するか、チップホルダーの先端部にボールペンチップを装着し、そのチップホルダーの後端部をインキを詰めた軸筒ないしはインキ収容管の先端部に圧入してなるものがある。
【０００３】
チップホルダーを圧入した合成樹脂製の軸筒またはチップを直接圧入した合成樹脂製のインキ収容管の先端部分は、常に内部応力が生じた状態になっており、筆記時におけるボールペンチップに加わる応力もあいまって、経時によりチップホルダーやチップの圧入力が低下してしまい、チップホルダーやチップが容易に抜け落ちてしまったり、圧入部からインキ漏れが発生し易い等の問題が生じていた。
【０００４】
合成樹脂製の軸筒内にインキを直接収納した直詰めタイプのボールペンのチップホルダーの抜け落ちやインキ漏れを防ぐために、チップホルダーの後端部を圧入した軸筒の先端部分の外周面を金属管で被覆することが提案されている（例えば、特許文献１参照）。
【０００５】
【特許文献１】
特開２００２−１１３９８５
【０００６】
しかしながら、チップホルダーの後端部を圧入した軸筒の先端部分の外周面を金属管で被覆するだけでは十分な効果は期待できず、特許文献１ではチップホルダーの鍔部と軸筒先端部とで被覆した金属管を挟持することで効果を得るようにしている。
また、チップホルダーを用いているため、部品点数が増え、加工精度や組立精度の点からも問題がある。
【０００７】
まして、ノック機構により軸筒先端部から出没可能で、かつノック作動に連動した加圧機構を有するボールペンタイプの塗布具に搭載され、合成樹脂製のインキ収容管に直接チップを圧入したリフィールユニットにおいては、チップを圧入したインキ収容管先端部分の内部応力や塗布時におけるボールペンチップに加わる応力にインキ収容管後方部からの加圧力も加わって、通常の場合よりもチップの抜け落ちやインキ漏れが生じ易い。
【０００８】
【発明が解決しようとする課題】
本発明は、上記従来技術の課題等に鑑み、ノック機構により軸筒先端部から出没可能で、かつノック作動に連動した加圧機構を有するボールペンタイプの塗布具に搭載され、合成樹脂製のインキ収容管に直接チップを圧入したリフィールユニットにおいて、簡単な構造で、しかも部品点数も少なく、インキ収容管からのチップの抜け落ちやインキ漏れを解消することを目的とする。
【０００９】
【課題を解決するための手段】
本発明者らは、ノック機構により軸筒先端部から出没可能で、かつノック作動に連動した加圧機構を有するボールペンタイプの塗布具に搭載され、合成樹脂製のインキ収容管に直接チップを圧入したリフィールユニットにおいて、チップを圧入したインキ収容管の先端取付部の外周部に金属管を圧入被覆し、固定することによって、本発明を完成させるに至ったものである。
すなわち、本発明は、以下の（１）〜（４）に存する。
（１）先端に塗布部と後方にインキ収容管を備えた合成樹脂製のリフィールユニットが、第１のスプリングで後方に向けて弾発された状態で軸本体に装填されると共に、前記リフィールユニットの塗布部を、軸本体の後端側に設けたノック機構の押し出し操作及び押し出し解除操作に連動させて出没可能となる塗布具に装填されるリフィールユニットであって、
前記リフィールユニットのインキ収容管後部が開放され、軸本体には、該インキ収容管後部とノック機構との間にインキ収容管内圧力を増加させる加圧機構が設けられ、
加圧機構は、シール部、前端開放の筒部、前記シール部に設けられる逆止弁と、シール部及び筒部を離隔させる方向に弾発させる第２のスプリングとを有するものであり、
前記ノック機構の押し出し操作に連動して前記加圧機構の前記シール部が、リフィールユニットの前記インキ収容管後端に密着後さらに前記筒部が前進して、前記筒部と前記シール部とで形成される加圧室の内部空気を圧縮し、
前記ノック機構の押し出し操作終了後に、軸本体から突出した塗布部先端を押圧してリフィールユニットを後退させた場合に、加圧機構では前記シール部に対して相対的に筒部が前進して前記加圧室内が加圧されるとともに、前記逆止弁を開きインキ収容管内を加圧するようにした塗布具に装填されるリフィールユニットであって、
塗布部が、ボールを回転自在に設けたボールペンチップの後端部をインキ収容管の先端取付部に圧入装着し、チップを圧入したインキ収容管の先端取付部の外周部に金属管を圧入被覆し、固定してなることを特徴とするリフィールユニット。
（２）ボールペンチップは、先端に金属製のボール及び金属製のホルダーを有し、ボールがチップ先端のボール抱持部の内縁に密接するようにボールの背面にスプリング部材からなる押圧手段により押圧が付与されてなる構造であることを特徴とする上記（１）に記載のリフィールユニット。
（３）チップを圧入したインキ収容管の先端取付部の外周部に片方の端面を絞り込んだ金属管でインキ収容管の先端取付部の端面を被覆するようにして圧入被覆、固定したことを特徴とする上記（１）又は（２）に記載のリフィールユニット。
（４）チップを圧入したインキ収容管の先端取付部の外周面に全周の突起もしくは突起を設けて、主に全周の突起もしくは突起に対して金属管を圧入、固定したことを特徴とする上記（１）〜（３）の何れか一つに記載のリフィールユニット。
【００１０】
【発明の実施の形態】
以下に、図に基づき本発明の実施の形態を詳しく説明する。
図１は、本発明の実施形態に係るリフィールユニットを軸筒内に収納した塗布具の半縦断面図であり、第２図は、リフィールユニットの断面図である。第３図は、第２図のＡ−Ａ線横断面図、第４図〜第７図は、本発明の種々の実施形態を説明する要部の断面図である。
【００１１】
実施形態の塗布具は、先端にボールペンチップ１０と後方にインキ収容管１２を備えたリフィールユニット１４が、第１のスプリング１６で後方に向けて弾発された状態で軸本体１８内に装填されると共に、前記リフィールユニット１４のボールペンチップ１０を軸本体１８の後端側に設けたノック機構２０の押し出し操作及び押し出し解除操作に連動させて先端開口１８ａから出没可能となる塗布具において、前記リフィールユニット１４のインキ収容管１２後部が開放され、軸本体１８内には、該インキ収容管後部１２ｒとノック機構２０との間にインキ収容管１２内圧力を増加させる加圧機構２２が設けられ、加圧機構２２は、シール部２４と前端開放の筒部２６とシール部２４および筒部を離隔させる方向に弾発させる第２のスプリング２８とを有するものであり、前記ノック機構２０の押し出し操作に連動して軸本体１８内にある加圧機構２２のシール部２４がリフィールユニット１４のインキ収容管後端１２ｒに密着後さらに筒部２６が前進して加圧室４０の内部空気を圧縮し、その圧縮された内部空気により逆止弁４６を開きシール部２４を介してインキ収容管１２内を加圧するようになっている。
【００１２】
また、前記ノック機構２０の押し出し操作終了後に、軸本体１８から突出したボールペンチップ１０先端を押圧してリフィールユニット１４を後退させた場合に、加圧機構２２では前記シール部２４が後退して相対的に筒部２６が前進して内部加圧室４０の内部空気を圧縮し、前記と同様に、その圧縮された内部空気により逆止弁４６を開きシール部２４を通してインキ収容管内を加圧するようになっている。
【００１３】
リフィールユニット１４のインキ収容管１２は、ポリプロピレン、ポリアミド等の一般的な樹脂の成形体で、先端チップ取付部５１がインキ収容管１２の後部よりも細い径の筒体５２となるように絞って成形しており、該筒体５２の内部中程には圧入するチップ１０を受ける受け座５３となるリブ５４を複数本設けてある。また、該筒体５２の外部適箇所には筒体５２先端部より圧入被覆、固定する金属管５５を受け止めるリブ５６を複数本形成してある。
【００１４】
チップ１０の先端部のボール５７は、押し棒５８を介してスプリング５９により弾発され、先端ボール５７は先端カシメ内面６６と密着し、気密状態になっている。スプリング５９の一方の端面６０はインキ収容管１２の筒体５２内部のリブ５４を途中まで切り込んで設けた受け部６１で直接受けている。
【００１５】
筒体５２の外周部６２に圧入被覆、固定する金属管５５は、アルミニウム、ステンレス等一般的な金属を用い、単純なリング状であっても、片方の端面６７を絞り込んでインキ収容管１２の筒体５２の先端チップ取付部分６３の端面６４を覆う形状にしても良い。
【００１６】
また、インキ収容管１２の筒体５２の外周部６２の金属管５５を圧入被覆する部分に相対する部分に全周の突起もしくは突起６５を設けて、主に全周の突起もしくは突起６５に対して金属管５５を圧入するようになしても良い。
【００１７】
【発明の効果】
本発明によれば、上記のように構成したので、チップを直接圧入したインキ収容管先端部分の内部応力や塗布時におけるボールペンチップに加わる応力、更にインキ収容管後部よりの加圧力等のチップをインキ収容管から抜け落とす力に対しても、また、経時によるチップの圧入力の低下に対してもチップの抜け落ちやインキ漏れを十分に防止することができる。
【００１８】
加えて、本発明のリフィールユニットは、チップホルダーを使用せず直接インキ収容管にチップを圧入する構造にしたので、部品点数が減り、加工精度や組立精度の点からも効果がある。
また、チップをインキ収容管に直接圧入した構造のために、インキ収容管に収容したインキをチップ取付部分まで視認できるという効果もある。
【００１９】
金属管をインキ収容管のチップ取付部の外周面に圧入被覆、固定したため、インキ収容管のチップ圧入面の気密性が確保でき、インキの品質の安定化も図ることが出来る。
【図面の簡単な説明】
【図１】本発明の実施形態に係るリフィールユニットを軸筒内に収納した塗布具の半縦断面図である。
【図２】本発明の実施形態に係るリフィールユニットの断面図である。
【図３】第２図のＡ−Ａ線横断面図である。
【図４】本発明の一実施形態に係るリフィールユニットの要部の断面図である。
【図５】本発明の第二の実施形態に係るリフィールユニットの要部の断面図である。
【図６】本発明の第三の実施形態に係るリフィールユニットの要部の断面図である。
【図７】本発明の第四の実施形態に係るリフィールユニットの要部の断面図である。
【符号の説明】
１０ ボールペンチップ
１２ インキ収容管
１４ リフィールユニット
１６ 第１のスプリング
１８ 軸本体
２０ ノック機構
２２ 加圧機構
２４ シール部
２６ 筒部
２８ 第２のスプリング
４０ 加圧室
４６ 逆止弁
５１ 先端チップ取付部
５２ 筒体
５３ 受け座
５４ リブ
５５ 金属管
５６ リブ
５７ ボール
５８ 押し棒
５９ スプリング
６０ 端面
６１ 受け部
６２ 外周部
６３ 先端チップ取付部分
６４ 端面
６５ 突起もしくはアンダーカット
６６ 先端カシメ内面
６７ 端面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin refill unit mounted on a ball-point pen-type applicator having a pressurizing mechanism that can be projected and retracted from a tip portion of a shaft cylinder by a knock mechanism and interlocked with a knock operation.
[0002]
[Prior art]
Conventionally, there are ballpoint pen-type writing instruments, either a direct-packing type in which ink is directly stored in the shaft cylinder, or an ink storage tube in the refill unit stored in the shaft cylinder, which is filled with ink. Insert the ball-point pen tip directly into the tip of the tube, or attach the ball-point pen tip to the tip of the tip holder, and place the rear end of the tip holder on the tip of the shaft cylinder or ink containing tube filled with ink. Some are press-fitted.
[0003]
The tip of the synthetic resin shaft cylinder with the chip holder press-fitted or the synthetic resin ink containing tube with the chip directly press-fitted always has internal stress, and the stress applied to the ball-point pen tip during writing is also Along with this, the pressure input of the chip holder and the chip is lowered with time, and the chip holder and the chip are easily detached, and there is a problem that ink leakage is likely to occur from the press-fitting portion.
[0004]
To prevent the tip holder of a direct-filled ballpoint pen that contains ink directly in a synthetic resin shaft cylinder from falling off or leaking ink, the outer peripheral surface of the front end of the shaft cylinder into which the rear end of the chip holder is press-fitted is a metal tube. It is proposed to coat with (for example, refer to Patent Document 1).
[0005]
[Patent Document 1]
JP2002-113985A
[0006]
However, a sufficient effect cannot be expected simply by covering the outer peripheral surface of the tip portion of the shaft cylinder into which the rear end portion of the chip holder is press-fitted with a metal tube. In Patent Document 1, the flange portion of the chip holder, the tip portion of the shaft tube, The effect is obtained by sandwiching the metal tube covered with.
Further, since the chip holder is used, the number of parts increases, and there is a problem in terms of processing accuracy and assembly accuracy.
[0007]
Furthermore, in a refill unit that is mounted on a ballpoint pen type applicator that has a pressurizing mechanism that can be moved in and out of the tip of the shaft cylinder by a knock mechanism and that is linked to the knock operation, and the chip is directly press-fitted into a synthetic resin ink containing tube. In addition to the internal stress at the tip of the ink receiving tube into which the tip is press-fitted and the stress applied to the ballpoint pen tip during application, the pressure from the back of the ink containing tube is also applied, resulting in tip dropping and ink leakage than usual. easy.
[0008]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION In view of the above-described problems of the prior art, the present invention is an ink made of a synthetic resin that is mounted on a ballpoint pen type applicator having a pressurizing mechanism that can be projected and retracted from the tip of a shaft cylinder by a knock mechanism and interlocked with a knock operation. An object of the refill unit in which the chip is directly press-fitted into the storage tube is to have a simple structure and a small number of parts, and to eliminate the falling off of the chip from the ink storage tube and the ink leakage.
[0009]
[Means for Solving the Problems]
The inventors of the present invention are mounted on a ballpoint pen type applicator having a pressurizing mechanism that can be moved in and out of the tip of the shaft cylinder by a knock mechanism and interlocked with the knock operation, and press the chip directly into the ink containing tube made of synthetic resin. In the refill unit, the present invention is completed by press-fitting and fixing a metal tube on the outer peripheral portion of the tip mounting portion of the ink containing tube into which the chip is press-fitted, and fixing.
That is, the present invention resides in the following (1) to (4).
(1) together with the synthetic resin of the refill unit with the ink reservoir tube to the coating unit and the rear to the tip is loaded to the shaft body while being resiliently rearwardly in the first spring, said refill unit A refill unit that is loaded into an applicator that can be moved in and out in conjunction with a push operation and a push release operation of a knock mechanism provided on the rear end side of the shaft body,
The rear portion of the ink storage tube of the refill unit is opened, and the shaft body is provided with a pressurizing mechanism for increasing the pressure in the ink storage tube between the rear portion of the ink storage tube and the knock mechanism.
The pressurizing mechanism has a seal portion , a front end open cylindrical portion , a check valve provided in the seal portion, and a second spring that repels the seal portion and the cylindrical portion in a separating direction.
In conjunction with the push-out operation of the knock mechanism, the cylinder part further advances after the seal part of the pressure mechanism is brought into close contact with the rear end of the ink containing tube of the refill unit, and the cylinder part and the seal part Compress the air inside the pressurization chamber that is formed,
After extrusion operation completion of the knock mechanism, when retract the refill unit by pressing the coated tip projecting from the shaft main body, the pressing mechanism relatively tube portion is advanced with respect to the sealing portion and the A refill unit that is loaded into an applicator that pressurizes the inside of the pressurizing chamber and opens the check valve to pressurize the ink containing tube,
The application part press-fits the rear end of a ballpoint pen tip with a ball rotatably mounted on the tip mounting part of the ink storage tube, and press-fits the metal tube on the outer periphery of the tip mounting part of the ink storage tube into which the chip is press-fitted The refill unit is characterized by being fixed.
(2) The ballpoint pen tip has a metal ball and a metal holder at the tip, and is pressed by a pressing means comprising a spring member on the back of the ball so that the ball is in close contact with the inner edge of the ball holding portion at the tip of the tip The refill unit according to (1) above, wherein
(3) It is characterized by press-fitting and fixing so that the end surface of the tip mounting portion of the ink containing tube is covered with a metal tube having one end surface squeezed on the outer peripheral portion of the tip mounting portion of the ink containing tube into which the chip is press-fitted. The refill unit according to (1) or (2) above.
(4) Providing protrusions or protrusions on the entire circumference on the outer peripheral surface of the tip mounting portion of the ink receiving tube into which the chips are press-fitted, and mainly metal parts are press-fitted and fixed to the protrusions or protrusions on the entire periphery. refill unit according to any one of the above (1) to (3) to be.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a half vertical sectional view of an applicator in which a refill unit according to an embodiment of the present invention is housed in a shaft tube, and FIG. 2 is a cross sectional view of the refill unit. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, and FIGS. 4 to 7 are cross-sectional views of the main parts for explaining various embodiments of the present invention.
[0011]
In the applicator of the embodiment, a refill unit 14 having a ball-point pen tip 10 at the tip and an ink storage tube 12 at the rear is loaded into the shaft body 18 in a state in which it is ejected rearward by a first spring 16. In the applicator, the ballpoint pen tip 10 of the refill unit 14 can be projected and retracted from the tip opening 18a in conjunction with the push-out operation and push-out release operation of the knock mechanism 20 provided on the rear end side of the shaft body 18. The rear portion of the ink containing tube 12 of the unit 14 is opened, and a pressurizing mechanism 22 for increasing the pressure inside the ink containing tube 12 is provided between the rear portion 12r of the ink containing tube and the knock mechanism 20 in the shaft body 18. The pressurizing mechanism 22 includes a second spring that repels the seal portion 24, the cylinder portion 26 with the front end open, the seal portion 24, and the cylinder portion. Those having a grayed 28, the knock mechanism 20 further cylinder after close contact with the ink reservoir rear end 12r of the seal portion 24 refill unit 14 of the extrusion in conjunction with the operation in the shaft body 18 by pressurizing mechanism 22 of the The portion 26 advances to compress the internal air of the pressurizing chamber 40, and the check valve 46 is opened by the compressed internal air to pressurize the ink containing tube 12 through the seal portion 24.
[0012]
In addition, when the refill unit 14 is moved backward by pressing the tip of the ball-point pen tip 10 protruding from the shaft body 18 after the pushing operation of the knock mechanism 20 is finished, the seal portion 24 is moved backward by the pressurizing mechanism 22. Thus, the cylinder part 26 advances to compress the internal air of the internal pressurizing chamber 40, and the check valve 46 is opened by the compressed internal air to pressurize the inside of the ink containing tube through the seal part 24 in the same manner as described above. It has become.
[0013]
The ink storage tube 12 of the refill unit 14 is a molded body of a general resin such as polypropylene or polyamide, and is squeezed so that the tip mounting portion 51 is a cylindrical body 52 having a smaller diameter than the rear portion of the ink storage tube 12. A plurality of ribs 54 serving as receiving seats 53 for receiving the press-fit chips 10 are provided in the middle of the cylindrical body 52. Further, a plurality of ribs 56 for receiving the metal pipe 55 to be press-fitted and fixed from the front end of the cylindrical body 52 are formed at appropriate locations outside the cylindrical body 52.
[0014]
The ball 57 at the tip of the chip 10 is ejected by a spring 59 via a push rod 58, and the tip ball 57 is in close contact with the inner surface 66 of the tip caulking and is in an airtight state. One end surface 60 of the spring 59 is directly received by a receiving portion 61 provided by cutting the rib 54 inside the cylindrical body 52 of the ink containing tube 12 halfway.
[0015]
The metal tube 55 to be press-fitted and fixed to the outer peripheral portion 62 of the cylindrical body 52 is made of a general metal such as aluminum or stainless steel. Even if it is a simple ring shape, one end face 67 is narrowed down to narrow the ink containing tube 12. You may make it the shape which covers the end surface 64 of the front-end | tip tip attachment part 63 of the cylinder 52. FIG.
[0016]
Further, by providing the entire periphery of the projection or projections 65 of the metal pipe 55 in a portion facing the portion press-fitted covering the outer peripheral portion 62 of the cylindrical body 52 of the ink reservoir 12, to primarily projection or projections 65 all around The metal tube 55 may be press-fitted.
[0017]
【The invention's effect】
According to the present invention, since it is configured as described above, a tip such as an internal stress at the tip portion of the ink containing tube into which the tip is directly press-fitted, a stress applied to the ballpoint pen tip at the time of application, or a pressure applied from the rear portion of the ink containing tube is provided. It is possible to sufficiently prevent the dropout of the chip and the ink leakage with respect to the force of dropping from the ink storage tube and the decrease in the pressure input of the chip over time.
[0018]
In addition, since the refill unit of the present invention has a structure in which the chip is directly press-fitted into the ink containing tube without using a chip holder, the number of parts is reduced, and there is an effect in terms of processing accuracy and assembly accuracy.
Moreover, since the chip is directly press-fitted into the ink storage tube, the ink stored in the ink storage tube can be visually recognized up to the chip mounting portion.
[0019]
Since the metal tube is press-fitted and fixed to the outer peripheral surface of the tip mounting portion of the ink storage tube, the air tightness of the chip press-fitting surface of the ink storage tube can be secured, and the ink quality can be stabilized.
[Brief description of the drawings]
FIG. 1 is a half vertical sectional view of an applicator in which a refill unit according to an embodiment of the present invention is housed in a shaft cylinder.
FIG. 2 is a cross-sectional view of a refill unit according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view taken along line AA in FIG. 2;
FIG. 4 is a cross-sectional view of a main part of a refill unit according to an embodiment of the present invention.
FIG. 5 is a cross-sectional view of a main part of a refill unit according to a second embodiment of the present invention.
FIG. 6 is a cross-sectional view of a main part of a refill unit according to a third embodiment of the present invention.
FIG. 7 is a cross-sectional view of a main part of a refill unit according to a fourth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Ball-point pen tip 12 Ink storage pipe 14 Refill unit 16 1st spring 18 Shaft main body 20 Knock mechanism 22 Pressurization mechanism 24 Seal part 26 Cylinder part 28 Second spring 40 Pressurization chamber 46 Check valve 51 Tip tip attachment part 52 Cylindrical body 53 Receiving seat 54 Rib 55 Metal tube 56 Rib 57 Ball 58 Push bar 59 Spring 60 End surface 61 Receiving portion 62 Outer peripheral portion 63 Tip tip mounting portion 64 End surface 65 Protrusion or undercut 66 Tip caulking inner surface 67 End surface

Claims (4)

先端に塗布部と後方にインキ収容管を備えた合成樹脂製のリフィールユニットが、第１のスプリングで後方に向けて弾発された状態で軸本体に装填されると共に、前記リフィールユニットの塗布部を、軸本体の後端側に設けたノック機構の押し出し操作及び押し出し解除操作に連動させて出没可能となる塗布具に装填されるリフィールユニットであって、
前記リフィールユニットのインキ収容管後部が開放され、軸本体には、該インキ収容管後部とノック機構との間にインキ収容管内圧力を増加させる加圧機構が設けられ、
加圧機構は、シール部、前端開放の筒部、前記シール部に設けられる逆止弁と、シール部及び筒部を離隔させる方向に弾発させる第２のスプリングとを有するものであり、
前記ノック機構の押し出し操作に連動して前記加圧機構の前記シール部が、リフィールユニットの前記インキ収容管後端に密着後さらに前記筒部が前進して、前記筒部と前記シール部とで形成される加圧室の内部空気を圧縮し、
前記ノック機構の押し出し操作終了後に、軸本体から突出した塗布部先端を押圧してリフィールユニットを後退させた場合に、加圧機構では前記シール部に対して相対的に筒部が前進して前記加圧室内が加圧されるとともに、前記逆止弁を開きインキ収容管内を加圧するようにした塗布具に装填されるリフィールユニットであって、
塗布部が、ボールを回転自在に設けたボールペンチップの後端部をインキ収容管の先端取付部に圧入装着し、チップを圧入したインキ収容管の先端取付部の外周部に金属管を圧入被覆し、固定してなることを特徴とするリフィールユニット。With synthetic resin refill unit comprising an ink reservoir tube to the coating section and the rear to the tip is loaded to the shaft body while being resiliently rearwardly in the first spring, the coating portion of the refill unit Is a refill unit that is loaded into an applicator that can be moved in and out in conjunction with the push-out operation and push-out release operation of a knock mechanism provided on the rear end side of the shaft body,
The rear portion of the ink storage tube of the refill unit is opened, and the shaft body is provided with a pressurizing mechanism for increasing the pressure in the ink storage tube between the rear portion of the ink storage tube and the knock mechanism.
Pressurizing mechanism are those having the seal portion, the cylindrical portion of the front end opening, a check valve provided in said sealing portion, and a second spring that resiliently in a direction to separate the sealing portion and the cylindrical portion,
In conjunction with the push-out operation of the knock mechanism, the cylinder part further advances after the seal part of the pressure mechanism is brought into close contact with the rear end of the ink containing tube of the refill unit, and the cylinder part and the seal part Compress the air inside the pressurization chamber that is formed,
After extrusion operation completion of the knock mechanism, when retract the refill unit by pressing the coated tip projecting from the shaft main body, the pressing mechanism relatively tube portion is advanced with respect to the sealing portion and the A refill unit that is loaded into an applicator that pressurizes the inside of the pressurizing chamber and opens the check valve to pressurize the ink containing tube,
The application part press-fits the rear end of a ballpoint pen tip with a ball rotatably mounted on the tip mounting part of the ink storage tube, and press-fits the metal tube on the outer periphery of the tip mounting part of the ink storage tube into which the chip is press-fitted The refill unit is characterized by being fixed. ボールペンチップは、先端に金属製のボール及び金属製のホルダーを有し、ボールがチップ先端のボール抱持部の内縁に密接するようにボールの背面にスプリング部材からなる押圧手段により押圧が付与されてなる構造であることを特徴とする請求項１に記載のリフィールユニット。The ballpoint pen tip has a metal ball and a metal holder at the tip, and pressure is applied to the back of the ball by a pressing means comprising a spring member so that the ball is in close contact with the inner edge of the ball holding portion at the tip of the tip. The refill unit according to claim 1, wherein the refill unit is configured as follows. チップを圧入したインキ収容管の先端取付部の外周部に片方の端面を絞り込んだ金属管でインキ収容管の先端取付部の端面を被覆するようにして圧入被覆、固定したことを特徴とする請求項１又は２に記載のリフィールユニット。Claims characterized in that the end surface of the tip mounting portion of the ink containing tube is press-fitted and fixed so as to cover the end surface of the tip portion of the ink containing tube with a metal tube having one end surface squeezed into the outer peripheral portion of the tip mounting portion of the ink containing tube into which the chip is press-fitted. Item 3. A refill unit according to item 1 or 2. チップを圧入したインキ収容管の先端取付部の外周面に全周の突起もしくは突起を設けて、主に全周の突起もしくは突起に対して金属管を圧入、固定したことを特徴とする請求項１〜３の何れか一つに記載のリフィールユニット。 A protrusion or protrusion on the entire circumference is provided on the outer peripheral surface of the tip mounting portion of the ink containing tube into which the chip is press-fitted, and a metal tube is mainly press-fitted and fixed to the protrusion or protrusion on the entire periphery. The refill unit according to any one of 1 to 3.
JP2003107568A 2003-03-04 2003-04-11 Refill unit Expired - Fee Related JP3933600B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2003107568A JP3933600B2 (en) 2003-04-11 2003-04-11 Refill unit
KR1020057016405A KR20050104416A (en) 2003-03-04 2004-03-03 Refill for correction pen and refill unit
DE602004027016T DE602004027016D1 (en) 2003-03-04 2004-03-03 REFILL FOR CORRECTIVE PIN AND REFILL UNIT
US10/548,125 US7600938B2 (en) 2003-03-04 2004-03-03 Refill for correction pen and refill unit
EP04716767A EP1607238B1 (en) 2003-03-04 2004-03-03 Refill for correction pen and refill unit
CN2008101692343A CN101372189B (en) 2003-03-04 2004-03-03 Refill unit
EP09007257A EP2123473A1 (en) 2003-03-04 2004-03-03 Refill for correction pen and refill unit
PCT/JP2004/002601 WO2004078489A1 (en) 2003-03-04 2004-03-03 Refill for correction pen and refill unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003107568A JP3933600B2 (en) 2003-04-11 2003-04-11 Refill unit

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JP2004314317A JP2004314317A (en) 2004-11-11
JP3933600B2 true JP3933600B2 (en) 2007-06-20

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Publication number Priority date Publication date Assignee Title
CN100448694C (en) * 2004-02-24 2009-01-07 三菱铅笔株式会社 Ball-point pen
JP4913483B2 (en) * 2006-06-23 2012-04-11 ゼブラ株式会社 Writing structure connection structure
JP5400683B2 (en) * 2010-03-31 2014-01-29 三菱鉛筆株式会社 Ballpoint pen refill and ballpoint pen
CN112638659B (en) * 2018-08-29 2023-06-16 三菱铅笔株式会社 Writing tool with pen core
JP7294857B2 (en) 2019-04-09 2023-06-20 三菱鉛筆株式会社 Ink storage member for writing instrument and writing instrument

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