JP2009154380A - Ball point pen - Google Patents

Ball point pen Download PDF

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JP2009154380A
JP2009154380A JP2007334557A JP2007334557A JP2009154380A JP 2009154380 A JP2009154380 A JP 2009154380A JP 2007334557 A JP2007334557 A JP 2007334557A JP 2007334557 A JP2007334557 A JP 2007334557A JP 2009154380 A JP2009154380 A JP 2009154380A
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rear end
holder member
end portion
holder
opening
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JP4309452B2 (en
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Shunichi Taniguchi
俊一 谷口
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Tombow Pencil Co Ltd
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Tombow Pencil Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To improve the ability of a pen refill unit to be loaded when replaced without deteriorating the sealing performance of the open rear end of an ink storage pipe. <P>SOLUTION: A holder member 8 for the ink storage pipe 6 is composed of first, second, and third holder members 23, 24, and 25. The respective rear ends 23a, 24a, and 25a of the holder members are made smaller in diameter than their front end ends 23b, 24b, and 25b. The front end of the second holder member is fitted on the rear end of the first holder. The open rear end 6b of the ink storage pipe is inserted into the rear ends of the first and second holder members from the front. Thereby the ink storage pipe is held so as to be detachable. The front end and rear end of the third holder are fitted on the front end and rear end of the third holder from rear. A rear face plate 26 having a through-hole 27 communicating with the opening 6c of the open rear end of the ink storage pipe is disposed at the rear end of the third holder member. A pressure pump mechanism 16 is connected to a rear part of the third holder member. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ボールペンに関し、特に前端部にペンチップが設けられたインク収容管からなるペンリフィールユニットを有するとともに、使用時のノック操作により、インク収容管内のインクを加圧するための加圧ポンプ機構を備えたボールペンに関する。   The present invention relates to a ballpoint pen, and in particular, has a pen refill unit composed of an ink containing tube provided with a pen tip at the front end, and a pressure pump mechanism for pressurizing ink in the ink containing tube by a knock operation during use. It relates to the provided ballpoint pen.

従来のボールペンにおいては、本体軸筒内に、ペンリフィールユニットにおけるインク収容管の開口後端部を、シール体からなるホルダ部材に差込み保持されるように嵌入して、着脱可能に装填するとともに、本体軸筒の後端部に設けたノック機構のノック操作に連動する、ピストンとシリンダおよびホルダ部材とにより加圧室が形成された加圧ポンプ機構を設けて、この加圧ポンプ機構により、インク収容管の開口後端部内を加圧するようにしたものが知られている(特許文献１参照)。   In the conventional ballpoint pen, the rear end of the opening of the ink storage tube in the pen refill unit is inserted into the holder member made of a seal body and is detachably loaded in the main body barrel, A pressurizing pump mechanism in which a pressurizing chamber is formed by a piston, a cylinder, and a holder member, interlocking with a knocking operation of a knock mechanism provided at the rear end portion of the main body cylinder, is provided. There is known one in which the inside of the rear end of the opening of the housing tube is pressurized (see Patent Document 1).

しかし、前記した特許文献１記載のボールペンは、ピストンの先端部における環状弾性リングおよびホルダ部材の外周面が、シリンダの内周面に密接して、外気と遮断され、使用時に、ノック機構に連動させてピストンを前方に移動させることにより、シリンダ内の加圧室における空気を加圧して、その加圧空気をインク収容管の開口後端部内に導入し、インク収容管内に充填されたインクを加圧しうるようになっているものであるが、環状弾性リングおよびホルダ部材の各部材を製作する際に、外径のばらつきや、金型の継ぎ目におけるばりなどにより、各部材の寸法精度が低下し、加圧室のシール性が損なわれてしまうという虞がある。
このような各部材、特にホルダ部材とインク収容管とのシール性を高めるには、両者の保持力を強固にしなければならず、これにより、ペンリフィールユニットの交換時に、ホルダ部材にインク収容管の開口後端部を保持させる際の装填性が悪くなるという問題があった。
特開２００５−２８０１１９号公報 However, in the ballpoint pen described in Patent Document 1, the outer peripheral surface of the annular elastic ring and the holder member at the tip of the piston is in close contact with the inner peripheral surface of the cylinder, and is shut off from the outside air. By moving the piston forward, the air in the pressurizing chamber in the cylinder is pressurized, the pressurized air is introduced into the rear end of the opening of the ink containing tube, and the ink filled in the ink containing tube is discharged. Although it can be pressurized, when manufacturing each member of the annular elastic ring and holder member, the dimensional accuracy of each member decreases due to variations in outer diameter, flashes at the joint of the mold, etc. However, there is a possibility that the sealing performance of the pressurizing chamber is impaired.
In order to improve the sealing performance between each of these members, particularly the holder member and the ink storage tube, the holding force of both must be strengthened, so that the ink storage tube is attached to the holder member when the pen filling unit is replaced. There was a problem that the loadability at the time of holding the rear end portion of the opening deteriorated.
JP 2005-280119 A

本発明は、前記の現状に鑑み、インク収容管における開口後端部のシール性を損なうことなく、交換時におけるペンリフィールユニットの装填性の向上を図ることができるようにしたボールペンを提供することを目的としている。   In view of the above-described situation, the present invention provides a ballpoint pen that can improve the loadability of the pen refill unit at the time of replacement without impairing the sealing performance of the rear end portion of the ink containing tube. It is an object.

上記課題は、「特許請求の範囲」における各請求項に記載するように、次のような構成からなる発明によって解決される。
(１) 本体軸筒内に配設したホルダ部材に、前端部にペンチップが設けられたインク収容管の開口後端部を前方より内嵌して、インク収容管を着脱可能に保持するとともに、ホルダ部材の後方に、本体軸筒の後端部に設けたノック機構のノック操作に連動してインク収容管の開口後端部内を加圧する加圧ポンプ機構を設けたボールペンにおいて、ホルダ部材を、それぞれ後端部が前端部よりも縮径された管状体よりなる第１ホルダ部材、第２ホルダ部材、第３ホルダ部材をもって構成するとともに、第１ホルダ部材における縮径された後端部に、第２ホルダ部材の前端部を外嵌するとともに、これら第１ホルダ部材および第２ホルダ部材の縮径された後端部内に、インク収容管の開口後端部を前方より内嵌して、インク収容管を着脱可能に保持し、かつ第２ホルダ部材の前端部、後端部に、それぞれ第３ホルダ部材の前端部、後端部を後方から外嵌するとともに、第３ホルダ部材の後端に、インク収容管の開口後端部における開口内に連通する通孔を備える後面板を設け、この第３ホルダ部材の後方に、加圧ポンプ機構を連設する。 As described in each claim in “Claims”, the above-described problem is solved by the invention having the following configuration.
(1) A holder member disposed in the main body barrel is fitted with an opening rear end of an ink storage tube provided with a pen tip at the front end from the front to hold the ink storage tube detachably. In a ballpoint pen provided with a pressure pump mechanism that pressurizes the inside of the opening rear end of the ink containing tube in conjunction with the knocking operation of the knock mechanism provided at the rear end of the main body barrel at the rear of the holder member. Each of the rear end portions includes a first holder member, a second holder member, and a third holder member made of a tubular body whose diameter is smaller than that of the front end portion, and the rear end portion whose diameter is reduced in the first holder member. The front end portion of the second holder member is externally fitted, and the rear end portion of the opening of the ink storage tube is fitted from the front in the rear end portions of the first holder member and the second holder member, which are reduced in diameter. Holding tube is detachable In addition, the front end portion and the rear end portion of the third holder member are externally fitted from the rear to the front end portion and the rear end portion of the second holder member, respectively, and the rear end of the third holder member is opened after the ink containing tube is opened. A rear plate having a through hole communicating with the opening in the end portion is provided, and a pressurizing pump mechanism is continuously provided behind the third holder member.

（２） 上記（１）項において、第２ホルダ部材における縮径された後端部の内外両周面に、それぞれインク収容管における開口後端部の外周面、第３ホルダ部材における後端部の内周面に密接する環状突起を形成する。 (2) In the above item (1), the inner and outer peripheral surfaces of the rear end portion of the second holder member having a reduced diameter are respectively arranged on the outer peripheral surface of the opening rear end portion of the ink containing tube and the rear end portion of the third holder member. An annular protrusion is formed in close contact with the inner peripheral surface of the.

（３） 上記（１）項または（２）項において、第１ホルダ部材における縮径された後端部の内周面に、インク収容管の外周面に密接する環状突起を形成する。 (3) In the item (1) or (2), an annular protrusion that is in close contact with the outer peripheral surface of the ink containing tube is formed on the inner peripheral surface of the reduced diameter rear end of the first holder member.

（４） 上記（１）〜（３）項のいずれかにおいて、加圧ポンプ機構を、内部に加圧室を形成する弾性円筒体からなる加圧部材と、ノック機構のノック操作にカム機構を介して連動する押圧部材より構成するとともに、第３ホルダ部材の縮径された後端部に、連結管材を外嵌し、かつこの連結管材により、加圧部材における弾性円筒体の前端鍔部を、第３ホルダ部材の後面板に密接させて、第３ホルダ部材と加圧部材内の加圧室との間の気密性を保持する。 (4) In any one of the above items (1) to (3), the pressurizing pump mechanism includes a pressurizing member made of an elastic cylinder forming a pressurizing chamber therein, and a cam mechanism for knocking operation of the knocking mechanism. The connecting member is externally fitted to the rear end portion of the third holder member whose diameter is reduced, and the connecting tube member allows the front end flange portion of the elastic cylindrical body in the pressurizing member to be formed. The airtightness between the third holder member and the pressurizing chamber in the pressurizing member is kept close to the rear plate of the third holder member.

本発明によると、次のような効果が奏せられる。
請求項１記載の発明によれば、第２ホルダ部材の外周面と第３ホルダ部材の内周面との間、およびインク収容管における開口後端部の外周面と第２ホルダ部材の内周面との間を効果的にシールすることができ、インク収容管の開口後端部内を、効率よく加圧することができるため、インク収容管における開口後端部のシール性を損なうことがない。
また、第１ホルダ部材の外周面と第２ホルダ部材の縮径された後端部にのみ、インク収容管の開口後端部を内嵌してあるため、交換時におけるペンリフィールユニットの装填性の向上を図ることができる。 According to the present invention, the following effects can be obtained.
According to the first aspect of the present invention, between the outer peripheral surface of the second holder member and the inner peripheral surface of the third holder member, and the outer peripheral surface of the rear end portion of the opening in the ink containing tube and the inner periphery of the second holder member. It is possible to effectively seal the gap between the surfaces, and the inside of the opening rear end portion of the ink storage tube can be efficiently pressurized, so that the sealing performance of the rear end portion of the ink storage tube is not impaired.
In addition, since the rear end of the opening of the ink storage tube is fitted only in the outer peripheral surface of the first holder member and the rear end of the second holder member whose diameter is reduced, the pen refill unit can be easily loaded during replacement. Can be improved.

請求項２記載の発明によれば、環状突起の形成によって、第２ホルダ部材と第３ホルダ部材、およびインク収容管と第３ホルダ部材との間のシール性を一層高めることができるとともに、インク収容管における開口後端部の外周面と第２ホルダ部材の内周面との間の互いのシール面における接触面積が、各々の環状突起の当接によって小さくなることから、ペンリフィールユニットにおけるインク収容管の開口後端部を容易に差込み保持することができ、しかも、各々の環状突起の断面形状を可変することによって、インク収容管とホルダ部材との保持力を容易に調整することができる。   According to the second aspect of the present invention, the formation of the annular protrusion can further enhance the sealing performance between the second holder member and the third holder member, and the ink storage tube and the third holder member, and the ink. Since the contact area on the seal surface between the outer peripheral surface of the rear end of the opening in the receiving tube and the inner peripheral surface of the second holder member is reduced by the contact of each annular protrusion, the ink in the pen refill unit The opening rear end of the storage tube can be easily inserted and held, and the holding force between the ink storage tube and the holder member can be easily adjusted by changing the cross-sectional shape of each annular projection. .

請求項３記載の発明によれば、インク収容管と第１ホルダ部材との間のシール性を高めることができるとともに、互いのシール面の接触面積を小さくすることができ、第１ホルダ部材へのインク収容管における開口後端部の保持抵抗を小さくすることができるため、ペンリフィールユニットの装填を容易に行うことができる。   According to the third aspect of the present invention, the sealing performance between the ink containing tube and the first holder member can be improved, and the contact area between the seal surfaces can be reduced, so that the first holder member can be reduced. Since the holding resistance at the rear end of the opening in the ink storage tube can be reduced, the pen refill unit can be easily loaded.

請求項４記載の発明によれば、インク収容管の開口後端部内に連通する加圧部材における加圧室内の気密性を、効果的に保持することができる。   According to the fourth aspect of the present invention, it is possible to effectively maintain the airtightness in the pressurizing chamber in the pressurizing member communicating with the rear end of the opening of the ink containing tube.

以下、本発明を、ノック式ボールペンを例にとり詳細に説明する。
図１は、本発明の一実施形態を示す非加圧状態におけるボールペンの断面図、図２は、図１のＡ部におけるホルダ部材近傍の要部拡大断面図、図３は、加圧状態における要部拡大断面図である。
なお、図において、紙面に対して「左側」を「前方」、「右側」を「後方」とする。 Hereinafter, the present invention will be described in detail by taking a knock-type ballpoint pen as an example.
FIG. 1 is a cross-sectional view of a ballpoint pen in a non-pressurized state showing an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the main part in the vicinity of a holder member in part A of FIG. 1, and FIG. It is a principal part expanded sectional view.
In the drawing, “left side” is “front” and “right side” is “back” with respect to the page.

図１に示すように、本発明のボールペン１は、本体軸筒２と、この本体軸筒２の前端部２ａに螺着したペン先部材３とで構成され、本体軸筒２内には、ペンリフィールユニット４が装填されている。   As shown in FIG. 1, the ballpoint pen 1 of the present invention includes a main body barrel 2 and a pen tip member 3 screwed to the front end portion 2 a of the main body barrel 2. The pen refill unit 4 is loaded.

ペンリフィールユニット４は、筆記媒体としてのインク５が充填されたインク収容管６と、このインク収容管６の前端部６ａに装着されたペンチップ７とで構成されている。 The pen refill unit 4 includes an ink storage tube 6 filled with ink 5 serving as a writing medium, and a pen tip 7 attached to the front end 6a of the ink storage tube 6.

ペンチップ７は、後記するノック機構１０のノック操作により、ペンリフィールユニット４を軸方向の前方に向けて押動することにより、ペン先部材３の前端開口部３ａから出没するようにしてある。   The pen tip 7 is adapted to protrude and retract from the front end opening 3a of the pen tip member 3 by pushing the pen refill unit 4 forward in the axial direction by a knock operation of the knock mechanism 10 described later.

インク収容管６の開口後端部６ｂは、本体軸筒２内を軸方向の前後に移動自在に配設したホルダ部材８に、前方より内嵌することにより保持されるように、本体軸筒２内に着脱可能に装填されている。
このホルダ部材８は、圧縮スプリング９により、ペンリフィールユニット４のペンチップ７を、ペン先部材３内に格納しうるように、後方に向けて付勢されている。 The opening rear end 6b of the ink containing tube 6 is held by being fitted into the holder member 8 that is movably disposed in the axial direction of the main shaft 2 from the front. 2 is detachably loaded.
The holder member 8 is urged backward by a compression spring 9 so that the pen tip 7 of the pen refill unit 4 can be stored in the pen tip member 3.

本体軸筒２の後端部２ｂ内には、ノック機構１０が組み込まれ、このノック機構１０は、ノック部１１と、このノック部１１を本体軸筒２の後端部２ｂから外部に突出しうるように後方に向けて付勢する圧縮スプリング１２と、この圧縮スプリング１２の付勢力に抗するノック部１１の押込み動作、及びその開放動作に協動するノック棒１３と、このノック棒１３に連動するカム機構部１４と、このカム機構部１４に協動する回転子１５とにより構成されている。   A knock mechanism 10 is incorporated in the rear end portion 2b of the main body shaft cylinder 2. The knock mechanism 10 can project the knock portion 11 and the knock portion 11 from the rear end portion 2b of the main body shaft cylinder 2 to the outside. In this manner, the compression spring 12 is urged rearward, the knocking portion 11 is pushed against the urging force of the compression spring 12, and the knocking rod 13 cooperates with the opening operation. And a rotor 15 that cooperates with the cam mechanism portion 14.

圧縮スプリング１２のばね力は、ホルダ部材８を付勢する圧縮スプリング９のばね力よりも小さく設定されている。
すなわち、ノック機構１０は、ノック部１１のノック操作により、ノック棒１３を、圧縮スプリング１２の付勢力に抗して押込み動作させるとともに、その開放を行うことより、カム機構部１４によって、回転子１５を駆動させ、これにより、ペンリフィールユニット４のペンチップ７を、格納状態または突出状態に出没させうるようになっている周知の機構である。 The spring force of the compression spring 12 is set smaller than the spring force of the compression spring 9 that biases the holder member 8.
That is, the knock mechanism 10 causes the knock bar 13 to be pushed against the urging force of the compression spring 12 by the knocking operation of the knock part 11 and to release the rotor, so that the cam mechanism 14 causes the rotor to move. 15 is a well-known mechanism that can drive the pen tip 7 of the pen refill unit 4 in a retracted state or a protruding state.

ホルダ部材８の後方におけるインク収容管６の開口後端部６ｂと回転子１５の前端部１５ａとの間には、本体軸筒２の後端部２ｂに設けたノック機構１０のノック操作に連動して、インク収容管６の開口後端部６ｂにおける開口６ｃ内を加圧する加圧ポンプ機構１６が連設されている。   Between the opening rear end 6b of the ink containing tube 6 and the front end 15a of the rotor 15 at the rear of the holder member 8 is interlocked with the knocking operation of the knock mechanism 10 provided at the rear end 2b of the main body cylinder 2. A pressurizing pump mechanism 16 that pressurizes the inside of the opening 6c at the opening rear end 6b of the ink containing tube 6 is continuously provided.

この加圧ポンプ機構１６は、図２に示すように、カム機構１４における回転子１５の駆動に追従しうるように連動する押圧部材１７と、この押圧部材１７の前端部とインク収容管６の開口後端部６ｂとの間に設けた加圧部材１８とにより構成されている。   As shown in FIG. 2, the pressurizing pump mechanism 16 includes a pressing member 17 that interlocks so as to follow the driving of the rotor 15 in the cam mechanism 14, a front end portion of the pressing member 17, and the ink containing tube 6. It is comprised by the pressurization member 18 provided between the opening rear-end parts 6b.

加圧部材１８は、ゴム等のエラストマーからなる弾性円筒体により形成されており、この加圧部材１８の前端鍔部１９ａを、インク収容管６の開口後端部６ｂが保持されるホルダ部材８の後端に密接させるとともに、インク収容管６の開口後端部６ｂにおける開口６ｃ内に連通しうるように組み付け、その後端面１９ｂ側を、押圧部材１７の前端部に外気と連通させて組み付けてある。   The pressure member 18 is formed of an elastic cylindrical body made of an elastomer such as rubber, and the holder member 8 that holds the front end flange portion 19a of the pressure member 18 and the rear end portion 6b of the ink containing tube 6 is held. The rear end surface 19b of the ink containing tube 6 is connected to the front end of the pressing member 17 so as to communicate with the outside air. is there.

加圧部材１８は、ノック機構１０のノック操作によって、押圧部材１７の前方への移動に伴う押圧動作により、加圧部材１８の内部に形成される加圧室２０内を、前後の軸方向に伸縮変形可能としてある。   The pressurizing member 18 moves in the axial direction of the front and rear in the pressurizing chamber 20 formed inside the pressurizing member 18 by a pressing operation accompanying the forward movement of the pressing member 17 by the knocking operation of the knock mechanism 10. It can be stretched and deformed.

押圧部材１７の前端中央部には、栓体２１が前方に向けて突設されており、この栓体２１は、前記した加圧部材１８の圧縮変形により、加圧部材１８の後端口部２２を閉塞し、加圧室２０内を気密状態に維持しうるようになっている。   A plug body 21 protrudes forward from the center of the front end of the pressing member 17, and the plug body 21 is formed by compressing deformation of the pressure member 18 and has a rear end mouth portion 22 of the pressure member 18. The inside of the pressurizing chamber 20 can be maintained in an airtight state.

ホルダ部材８は、管状体よりなる第１ホルダ部材２３、第２ホルダ部材２４、第３ホルダ部材２５をもって構成されるとともに、それぞれ後端部２３ａ、２４a、２５ａは、各々の前端部２３ｂ、２４ｂ、２５ｂよりも縮径して形成されている。   The holder member 8 includes a first holder member 23, a second holder member 24, and a third holder member 25 made of a tubular body, and the rear end portions 23a, 24a, and 25a are respectively connected to the front end portions 23b and 24b. , 25b.

第１ホルダ部材２３における縮径された後端部２３ａには、第２ホルダ部材２４の前端部２４ｂが外嵌されているとともに、これら第１ホルダ部材２３および第２ホルダ部材２４の縮径された後端部２３ａ、２４ａ内には、インク収容管６の開口後端部６ｂが前方より内嵌されて、インク収容管６が着脱可能に保持されるようになっている。   The rear end portion 23a of the first holder member 23 having a reduced diameter is fitted with the front end portion 24b of the second holder member 24, and the diameters of the first holder member 23 and the second holder member 24 are reduced. In addition, in the rear end portions 23a and 24a, an opening rear end portion 6b of the ink storage tube 6 is fitted from the front, and the ink storage tube 6 is detachably held.

第２ホルダ部材２４の後端部２４ａ、前端部２４ｂには、それぞれ第３ホルダ部材２５の後端部２５ａ、前端部２５ｂが後方から外嵌されているとともに、第３ホルダ部材２５の後端には、後面板２６が設けられ、この後面板２６には、インク収容管６の開口後端部６ｂにおける開口６ｃ内に連通する通孔２７が設けられ、かつこの通孔２７を有する後面板２６の後方に、加圧ポンプ機構１６が連設されるようになっている。   The rear end portion 24a and the front end portion 24b of the second holder member 24 are respectively fitted with the rear end portion 25a and the front end portion 25b of the third holder member 25 from the rear, and the rear end of the third holder member 25. The rear plate 26 is provided with a through hole 27 communicating with the opening 6 c in the rear end 6 b of the ink containing tube 6, and the rear plate having the through hole 27. A pressurizing pump mechanism 16 is connected to the rear of 26.

第３ホルダ部材２５における縮径された後端部２５ａには、管状体よりなる連結管材２８が外嵌されているとともに、この連結管材２８により、加圧部材１８の前端鍔部１９ａを、第３ホルダ部材２５における後面板２６の後面に密接させることにより、第３ホルダ部材２５と加圧部材１８内の加圧室２０との間の気密性が保持されるようにしてある。   The rear end portion 25a having a reduced diameter in the third holder member 25 is externally fitted with a connecting tube material 28 made of a tubular body. The connecting tube material 28 allows the front end flange portion 19a of the pressurizing member 18 to be By bringing the third holder member 25 into close contact with the rear surface of the rear plate 26, the airtightness between the third holder member 25 and the pressurizing chamber 20 in the pressurizing member 18 is maintained.

なお、第１ホルダ部材２３、第３ホルダ部材２５および連結管材２８は、硬質プラスチックにより成型されているとともに、第２ホルダ部材２４は、合成ゴム等のエラストマーによって成型されている。   The first holder member 23, the third holder member 25, and the connecting pipe material 28 are molded from hard plastic, and the second holder member 24 is molded from an elastomer such as synthetic rubber.

第２ホルダ部材２４における後端部２４ａ側の内外両周面には、インク収容管６における開口後端部６ｂの外周面と、第３ホルダ部材２５における後端部２５ａの内周面とにそれぞれ密接する、前後に２条の環状突起２９、３０が形成されているとともに、第１ホルダ部材２３における縮径された後端部２３ａの内周面には、インク収容管６の外周面に密接する環状突起３１が形成されている。
すなわち、第２ホルダ部材２４の外周面と第３ホルダ部材２５の内周面との間は、環状突起２９によってシールし、インク収容管６の開口後端部６ｂの外周面と第２ホルダ部材２４の内周面との間は、環状突起３０によってシールするとともに、インク収容管６の開口後端部６ｂの外周面と第１ホルダ部材２３の内周面との間は、環状突起３１によってシールするようになっている。 On the inner and outer peripheral surfaces of the second holder member 24 on the rear end portion 24a side, there are an outer peripheral surface of the opening rear end portion 6b of the ink containing tube 6 and an inner peripheral surface of the rear end portion 25a of the third holder member 25. Two annular protrusions 29 and 30 are formed on the front and rear sides, which are in close contact with each other, and the inner peripheral surface of the reduced diameter rear end portion 23a of the first holder member 23 is connected to the outer peripheral surface of the ink containing tube 6. An intimate annular protrusion 31 is formed.
That is, the space between the outer peripheral surface of the second holder member 24 and the inner peripheral surface of the third holder member 25 is sealed by the annular protrusion 29, and the outer peripheral surface of the opening rear end portion 6 b of the ink containing tube 6 and the second holder member. 24 is sealed by an annular protrusion 30, and an annular protrusion 31 is provided between the outer peripheral surface of the opening rear end 6 b of the ink containing tube 6 and the inner peripheral surface of the first holder member 23. It comes to seal.

上記の構成により、ホルダ部材８により保持されたインク収容管６の開口後端部６ｂにおける開口６ｃ内を効果的に密閉することができ、効率よく加圧することができる。
また、インク収容管６における開口後端部６ｂの外周面と、第１ホルダ部材２３および第２ホルダ部材２４の内周面との間の互いのシール面における接触面積は、各々の環状突起２９、３０、３１の当接によって小さくすることができることから、ペンリフィールユニット４におけるインク収容管６の開口後端部６ｂを容易に差し込んで保持することができるとともに、各々の環状突起２９、３０、３１の断面形状を可変することによって、インク収容管６とホルダ部材８との保持力を容易に調整することができる。 With the above configuration, the inside of the opening 6c in the opening rear end 6b of the ink containing tube 6 held by the holder member 8 can be effectively sealed, and the pressure can be efficiently applied.
In addition, the contact area on the seal surface between the outer peripheral surface of the opening rear end 6 b of the ink containing tube 6 and the inner peripheral surfaces of the first holder member 23 and the second holder member 24 is determined by the respective annular protrusions 29. , 30, 31 can be reduced by contact, so that the rear end 6b of the ink containing tube 6 in the penfill unit 4 can be easily inserted and held, and the annular protrusions 29, 30, By changing the cross-sectional shape of 31, the holding force between the ink containing tube 6 and the holder member 8 can be easily adjusted.

次に、本実施形態におけるボールペン１の操作手順を説明する。図１及び図２に示す非加圧状態において、ノック部１１を、圧縮スプリング１２の付勢力に抗して、半段階で前方に向けて押込み動作させると、この動作に協動して、ノック棒１３が前方に向けて移動し、カム機構部１４を介して回転子１５が半駆動される。   Next, an operation procedure of the ballpoint pen 1 in the present embodiment will be described. In the non-pressurized state shown in FIGS. 1 and 2, when the knock portion 11 is pushed forward in a half step against the urging force of the compression spring 12, the knock portion 11 cooperates with this operation and knocks. The rod 13 moves forward, and the rotor 15 is driven halfway through the cam mechanism portion 14.

この回転子１５の半駆動により、図３に示すように、押圧部材１７は、前方に向けて移動し、加圧部材１８を、前方に向けて押圧し、この押圧部材１７の押圧動作により、加圧部材１８は、圧縮変形するとともに、押圧部材１７の前端中央部に突設した栓体２１により、加圧部材１８の後端口部２２を閉塞する。   As shown in FIG. 3, the half-drive of the rotor 15 moves the pressing member 17 toward the front, presses the pressing member 18 toward the front, and the pressing operation of the pressing member 17 The pressure member 18 is compressed and deformed and closes the rear end port portion 22 of the pressure member 18 by a plug body 21 protruding from the center of the front end of the pressing member 17.

押圧部材１７により圧縮された加圧部材１８の加圧室２０内の空気は、インク収容管６の開口後端部６ｂにおける開口６ｃ内に向けて圧送され、インク収容管６内を加圧する。
このとき、ノック部１１の半段階における押込み力は、圧縮スプリング１２のばね力が、ホルダ部材８の第１ホルダ部材２３を介してペンリフィールユニット４を後方に付勢する圧縮スプリング９のばね力よりも、小さく設定されており、ペンリフィールユニット４は、前方に向けて移動することがないため、ペンチップ７は、ペン先部材３内に格納状態に維持されている。 The air in the pressurizing chamber 20 of the pressurizing member 18 compressed by the pressing member 17 is pumped toward the opening 6 c in the rear end 6 b of the ink containing tube 6 to pressurize the inside of the ink containing tube 6.
At this time, the pushing force in the half stage of the knock part 11 is that the spring force of the compression spring 12 biases the pen refill unit 4 backward via the first holder member 23 of the holder member 8. Since the pen refill unit 4 does not move forward, the pen tip 7 is maintained in the pen tip member 3 in a retracted state.

図３に示す加圧状態とするには、まずノック部１１を、圧縮スプリング９のばね力よりも強い力により、前方に向けて押込み動作させることにより、この動作に協動して、ノック棒１３は前方に向けて移動し、カム機構部１４を介して、回転子１５がさらに駆動される。
このとき、ノック部１１の押込み力は、ホルダ部材８を介してペンリフィールユニット４を後方に付勢する圧縮スプリング９のばね力よりも大きいため、ペンリフィールユニット４は、前方に向けて移動し、ペンチップ７は、本体軸筒２の前端部２ａにおけるペン先部材３の開口部３ａから外部に突出する。 In order to obtain the pressurized state shown in FIG. 3, first, the knock portion 11 is pushed forward by a force stronger than the spring force of the compression spring 9 to cooperate with this operation. 13 moves forward, and the rotor 15 is further driven via the cam mechanism section 14.
At this time, since the pushing force of the knock portion 11 is larger than the spring force of the compression spring 9 that urges the penfill feel unit 4 rearward via the holder member 8, the pen fill feel unit 4 moves forward. The pen tip 7 projects outward from the opening 3 a of the pen tip member 3 in the front end 2 a of the main body barrel 2.

次いで、ノック部１１の押込み動作を開放すると、ノック棒１３のみが圧縮スプリング１２の付勢力により後方に復帰し、回転子１５は、駆動位置で係止されるため、ペンチップ７が突出状態を維持する。
また、押圧部材１７は、加圧部材１８を押圧したままとなっているため、加圧部材１８の加圧室２０内は、加圧状態が維持されている。
これにより、ペン使用時に、インク収容管６内を常に加圧状態に維持させることができるため、ペン先を上向きにした状態での筆記も容易に行うことができる。 Next, when the pushing operation of the knock part 11 is released, only the knock bar 13 returns backward by the urging force of the compression spring 12, and the rotor 15 is locked at the driving position, so that the pen tip 7 maintains the protruding state. To do.
Further, since the pressing member 17 keeps pressing the pressing member 18, the pressurizing chamber 20 of the pressing member 18 is maintained in a pressurized state.
As a result, when the pen is used, the inside of the ink containing tube 6 can always be maintained in a pressurized state, so that writing with the pen tip facing upward can be easily performed.

ペン使用後、ノック部１１を、圧縮スプリング１２の付勢力に抗して、再度、前方に向けて押込み、ノック棒１３を動作させると、カム機構部１４に対する回転子１５の係止状態が解除され、圧縮スプリング１２の付勢力によるノック棒１３の後方への復帰と共に、回転子１５は、圧縮スプリング９の付勢力により、押圧部材１７と共に後方に向け移動し、図１及び図２に示す元の位置に復帰すると同時に、加圧部材１８も圧縮状態から伸長状態に復帰し、再び、インク収容管６の開口後端部６ｂにおける開口６ｃ内及び加圧部材１８の加圧室２０が、外気と通気状態となり、インク収容管６内の加圧状態が開放される。
これにより、ノック操作を小さな力で容易に行うことができ、使用感に優れたボールペンが得られる。 After the pen is used, the knocking portion 11 is pushed forward again against the urging force of the compression spring 12 and the knocking rod 13 is operated to release the locked state of the rotor 15 with respect to the cam mechanism portion 14. When the knock bar 13 is returned to the rear by the urging force of the compression spring 12, the rotor 15 is moved rearward together with the pressing member 17 by the urging force of the compression spring 9, and the original shown in FIGS. At the same time, the pressure member 18 also returns from the compressed state to the expanded state, and the inside of the opening 6c at the rear end 6b of the ink containing tube 6 and the pressure chamber 20 of the pressure member 18 are again outside air. And the pressurized state in the ink containing tube 6 is released.
Thereby, a knock operation can be easily performed with a small force, and a ballpoint pen excellent in usability can be obtained.

本発明の一実施形態を示す非加圧状態におけるボールペンの断面図である。It is sectional drawing of the ball-point pen in the non-pressurized state which shows one Embodiment of this invention. 図１のＡ部におけるホルダ部材近傍の要部拡大断面図である。It is a principal part expanded sectional view of the holder member vicinity in the A section of FIG. 加圧状態における要部拡大断面図である。It is a principal part expanded sectional view in a pressurization state.

符号の説明Explanation of symbols

１ ボールペン
２ 本体軸筒
２ａ 前端部
２ｂ 後端部
３ ペン先部材
３ａ 開口部
４ ペンリフィールユニット
５ インク
６ インク収容管
６ａ 前端部
６ｂ 開口後端部
６ｃ 開口
７ ペンチップ
８ ホルダ部材
９ 圧縮スプリング
１０ ノック機構
１１ ノック部
１２ 圧縮スプリング
１３ ノック棒
１４ カム機構部
１５ 回転子
１６ 加圧ポンプ機構
１７ 押圧部材
１８ 加圧部材（弾性円筒体）
１９ａ 前端鍔部
１９ｂ 後端面
２０ 加圧室
２１ 栓体
２２ 後端口部
２３ 第１ホルダ部材
２３ａ 後端部
２３ｂ 前端部
２４ 第２ホルダ部材
２４ａ 後端部
２４ｂ 前端部
２５ 第３ホルダ部材
２５ａ 後端部
２５ｂ 前端部
２６ 後面板
２７ 通孔
２８ 連結管材
２９ 環状突起
３０ 環状突起
３１ 環状突起 DESCRIPTION OF SYMBOLS 1 Ball-point pen 2 Main body axial cylinder 2a Front end part 2b Rear end part 3 Pen tip member 3a Opening part 4 Pen refill unit 5 Ink 6 Ink storage tube 6a Front end part 6b Open rear end part 6c Opening 7 Pen tip 8 Holder member 9 Compression spring 10 Knock Mechanism 11 Knock portion 12 Compression spring 13 Knock bar 14 Cam mechanism portion 15 Rotor 16 Pressure pump mechanism 17 Press member 18 Press member (elastic cylinder)
19a Front end flange 19b Rear end surface 20 Pressurizing chamber 21 Plug 22 Rear end port 23 First holder member 23a Rear end 23b Front end 24 Second holder member 24a Rear end 24b Front end 25 Third holder member 25a Rear end Portion 25b front end portion 26 rear plate 27 through hole 28 connecting pipe material 29 annular projection 30 annular projection 31 annular projection

Claims (4)

本体軸筒内に配設したホルダ部材に、前端部にペンチップが設けられたインク収容管の開口後端部を前方より内嵌して、インク収容管を着脱可能に保持するとともに、ホルダ部材の後方に、本体軸筒の後端部に設けたノック機構のノック操作に連動してインク収容管の開口後端部内を加圧する加圧ポンプ機構を設けたボールペンにおいて、
ホルダ部材を、それぞれ後端部が前端部よりも縮径された管状体よりなる第１ホルダ部材、第２ホルダ部材、第３ホルダ部材をもって構成するとともに、第１ホルダ部材における縮径された後端部に、第２ホルダ部材の前端部を外嵌するとともに、これら第１ホルダ部材および第２ホルダ部材の縮径された後端部内に、インク収容管の開口後端部を前方より内嵌して、インク収容管を着脱可能に保持し、かつ第２ホルダ部材の前端部、後端部に、それぞれ第３ホルダ部材の前端部、後端部を後方から外嵌するとともに、第３ホルダ部材の後端に、インク収容管の開口後端部における開口内に連通する通孔を備える後面板を設け、この第３ホルダ部材の後方に、加圧ポンプ機構を連設したことを特徴とするボールペン。 The holder member disposed in the main body cylinder is fitted with the rear end of the opening of the ink storage tube provided with a pen tip at the front end from the front to hold the ink storage tube detachably. In a ballpoint pen provided with a pressure pump mechanism that pressurizes the inside of the rear end of the opening of the ink storage tube in conjunction with the knocking operation of the knock mechanism provided at the rear end of the main body barrel,
The holder member is constituted by a first holder member, a second holder member, and a third holder member each having a tubular body whose rear end portion is smaller in diameter than the front end portion, and after the diameter of the first holder member is reduced. The front end portion of the second holder member is fitted on the end portion, and the opening rear end portion of the ink containing tube is fitted from the front in the rear end portions of the first holder member and the second holder member which are reduced in diameter. The ink storage tube is detachably held, and the front end portion and the rear end portion of the second holder member are externally fitted from the rear to the front end portion and the rear end portion, respectively, and the third holder A rear plate having a through hole communicating with the opening at the rear end of the opening of the ink containing tube is provided at the rear end of the member, and a pressure pump mechanism is provided behind the third holder member. Ballpoint pen to do. 第２ホルダ部材における縮径された後端部の内外両周面に、それぞれインク収容管における開口後端部の外周面、第３ホルダ部材における後端部の内周面に密接する環状突起を形成した請求項１記載のボールペン。   On the inner and outer peripheral surfaces of the rear end portion of the second holder member that has been reduced in diameter, annular projections that are in close contact with the outer peripheral surface of the rear end portion of the opening in the ink storage tube and the inner peripheral surface of the rear end portion of the third holder member, respectively. The ballpoint pen according to claim 1 formed. 第１ホルダ部材における縮径された後端部の内周面に、インク収容管の外周面に密接する環状突起を形成した請求項１または２記載のボールペン。   3. The ballpoint pen according to claim 1, wherein an annular protrusion is formed on the inner peripheral surface of the rear end portion of the first holder member, the diameter of which is reduced, in close contact with the outer peripheral surface of the ink containing tube. 加圧ポンプ機構を、内部に加圧室を形成する弾性円筒体からなる加圧部材と、ノック機構のノック操作にカム機構を介して連動する押圧部材より構成するとともに、第３ホルダ部材の縮径された後端部に、連結管材を外嵌し、かつこの連結管材により、加圧部材における弾性円筒体の前端鍔部を、第３ホルダ部材の後面板に密接させて、第３ホルダ部材と弾性円筒体内の加圧室との間の気密性を保持した請求項１〜３のいずれかに記載のボールペン。   The pressurizing pump mechanism is composed of a pressurizing member made of an elastic cylinder that forms a pressurizing chamber therein, and a pressing member that interlocks with the knocking operation of the knocking mechanism via the cam mechanism, and the third holder member is contracted. The third holder member is configured such that a connecting pipe is externally fitted to the rear end of the diameter, and the front end collar of the elastic cylindrical body in the pressurizing member is brought into close contact with the rear plate of the third holder member by the connecting pipe. The ballpoint pen according to any one of claims 1 to 3, which maintains airtightness between the pressure chamber and the pressure chamber in the elastic cylinder.
JP2007334557A 2007-12-26 2007-12-26 Ballpoint pen Expired - Fee Related JP4309452B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010017992A (en) * 2008-07-14 2010-01-28 Tombow Pencil Co Ltd Stationery
CN102975521A (en) * 2011-09-06 2013-03-20 美久卢股份有限公司 Pressurizing type pen
JP7493442B2 (en) 2020-12-21 2024-05-31 株式会社パイロットコーポレーション Pressurized writing implement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010017992A (en) * 2008-07-14 2010-01-28 Tombow Pencil Co Ltd Stationery
CN102975521A (en) * 2011-09-06 2013-03-20 美久卢股份有限公司 Pressurizing type pen
CN102975521B (en) * 2011-09-06 2015-04-15 美久卢股份有限公司 Pressurizing type pen
JP7493442B2 (en) 2020-12-21 2024-05-31 株式会社パイロットコーポレーション Pressurized writing implement

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