JP3162327U - mechanical pencil - Google Patents

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JP3162327U
JP3162327U JP2010004118U JP2010004118U JP3162327U JP 3162327 U JP3162327 U JP 3162327U JP 2010004118 U JP2010004118 U JP 2010004118U JP 2010004118 U JP2010004118 U JP 2010004118U JP 3162327 U JP3162327 U JP 3162327U
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main body
mechanical pencil
tail plug
core
cartridge
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金成 裕之
裕之 金成
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Micro Co Ltd
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Micro Co Ltd
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Abstract

【課題】自動繰出機構を有するシャープペンシルにおいて、本体の先端に設けた口金を取り外さなくなくても簡単に芯を補給できるようにしたカートリッジ型のシャープペンシルを提供する。【解決手段】カートリッジ型で筒状の本体2の先部に自動繰出機構を設ける。この本体の後部に着脱可能に尾栓15を取付ける。尾栓15には、上記本体2に挿入可能な押圧軸18が形成され、この押圧軸18の先端には、芯4が入り込む凹部19が形成されている。芯4を補給するには、尾栓15を外し、芯4を本体2に入れてから、該尾栓15を本体2の後部に嵌め込む。このとき、芯4は、後端は凹部19に入り込んだ状態で上記押圧軸18に押されて、自動繰出機構内に入り、本体の先端から突出する。【選択図】図4In a mechanical pencil having an automatic feeding mechanism, a cartridge-type mechanical pencil is provided which can easily replenish a core without removing a base provided at the tip of a main body. An automatic feeding mechanism is provided at the tip of a cartridge-type cylindrical main body. A tail plug 15 is detachably attached to the rear part of the main body. The tail plug 15 is formed with a pressing shaft 18 that can be inserted into the main body 2, and a concave portion 19 into which the core 4 enters is formed at the tip of the pressing shaft 18. To replenish the lead 4, the tail plug 15 is removed, the lead 4 is put into the main body 2, and then the tail plug 15 is fitted into the rear part of the main body 2. At this time, the core 4 is pushed by the pressing shaft 18 in a state where the rear end enters the recess 19, enters the automatic feeding mechanism, and protrudes from the front end of the main body. [Selection] Figure 4

Description

本考案は、筆記に伴って芯が自動的に繰り出されるようにしたシャープペンシルに関するものである。   The present invention relates to a mechanical pencil in which a lead is automatically drawn out with writing.

芯を自動的に繰り出すようにした自動繰出式シャープペンシルが知られている(例えば特許文献1参照)。これらのシャープペンシルは、通常鉛筆型に形成され、口金(テーパー)を軸筒から取り外し可能に設け、この口金内に芯を自動的に送るための自動繰出機構が組み込まれている。そして、芯を補充する場合には、軸筒から口金を外し、該口金の後端から手で芯を自動繰出機構部の後端内に差込み、口金先端から芯が出るまで押し込んでいるが、この際芯が出すぎないように注意しながら押し込む必要があった。このように、芯を1本ずつ手で持って自動繰出機構部に送り込む構成のため、芯を何回もつかみ直したり、口金の先端から出すぎた場合には、芯を手で折って長さを調整したりしなければならなかった。   An automatic feeding type mechanical pencil that automatically feeds a lead is known (for example, see Patent Document 1). These mechanical pencils are usually formed in a pencil shape, and a base (taper) is provided so as to be removable from the shaft tube, and an automatic feeding mechanism for automatically feeding a lead into the base is incorporated. And when replenishing the core, remove the base from the shaft tube, insert the core into the rear end of the automatic feeding mechanism part by hand from the rear end of the base, and push in until the core comes out from the front end of the base, At this time, it was necessary to push in with care so that the lead did not come out too much. In this way, the core is held by hand and fed to the automatic feeding mechanism, so if you hold the core several times or if it comes out of the tip of the base, fold the core by hand I had to adjust it.

また、上記のように口金を取り外さなければならない構成のため、全体の形状を、ボールペンのカートリッジ型リフィールのように口金に相当する先端部分を取り外しできないカートリッジ型に形成できず、そのためカートリッジ型のリフィールを使用するノック式の筆記具に使用することがむずかしかった。   Further, since the base must be removed as described above, the entire shape cannot be formed into a cartridge type in which the tip portion corresponding to the base cannot be removed like the cartridge type refill of a ballpoint pen. It was difficult to use for a knock-type writing instrument.

実公平04−44389号公報(4欄9〜12行、第1図)Japanese Utility Model Publication No. 04-44389 (column 4, lines 9 to 12, FIG. 1)

本考案の解決課題は、筆記により芯が摩耗したとき芯を自動的に繰り出しできるようにしたシャープペンシルにおいて、軸筒から口金を外さなくても新しい芯を自動繰出機構部に供給でき、全体の形状をカートリッジ型に形成できるようにしたシャープペンシルを提供することである。   The problem to be solved by the present invention is that in a mechanical pencil that can automatically feed the lead when the lead is worn by writing, a new lead can be supplied to the automatic feeding mechanism without removing the base from the shaft tube. To provide a mechanical pencil that can be formed into a cartridge shape.

本考案によれば、筆記にともなって芯を自動的に繰り出すようにした自動繰出機構を筒状の本体の先部に設け、該本体の後端に尾栓を着脱可能に嵌着し、該尾栓に、上記本体内に挿入可能に形成され先端に芯の後端が入り込む凹部を有する押圧軸を設けたシャープペンシルが提供され、上記課題が解決される。   According to the present invention, an automatic feeding mechanism that automatically feeds the lead with writing is provided at the front end of the cylindrical main body, and a tail plug is detachably fitted to the rear end of the main body. A mechanical pencil provided with a pressing shaft having a recess formed in the tail plug so as to be insertable into the main body and into which the rear end of the core enters, is provided.

また、本発明の上記シャープペンシルにおいて、上記尾栓の押圧軸の凹部と自動繰出機構の先端間の間隔は、尾栓を本体に嵌着した状態で、芯の長さに等しくなるよう形成されている上記シャープペンシルが提供される。   In the mechanical pencil of the present invention, the interval between the concave portion of the pressing shaft of the tail plug and the tip of the automatic feeding mechanism is formed to be equal to the length of the core when the tail plug is fitted to the main body. A mechanical pencil is provided.

本考案は、上記のように構成され、筆記にともなって芯を自動的に繰り出すようにした自動繰出機構を筒状の本体の先部に設け、該本体の後端に尾栓を着脱可能に嵌着し、該尾栓に、上記本体内に挿入可能に形成され先端に芯の後端が入り込む凹部を有する押圧軸を設けたので、新しい芯を自動繰出機構内に補給するのには、尾栓を取り外して本体内に芯を挿入し、その後、尾栓の押圧軸を本体内部に入れ、尾栓を該本体の後部に嵌め込めば、押圧軸の凹部に芯の後端が入り込み、該芯は押圧軸に押されて前進し、先端が自動繰出機構内に挿入され、該自動繰出機構の先部から突出させることができる。このようにして、芯を手で1本つかまないで補充することができる。芯を押圧軸で移動させる際、芯は後端が上記凹部に保持された状態で斜めになるおそれがなく、真っ直ぐな状態で押されるから、折損することもない。また、本体の後部に上記尾栓を設けるだけですむので、従来のように本体の前部に口金を着脱可能に形成する必要がなく、前部を密閉式に形成したカートリッジ型のリフィール構造に構成することができ、従来のノック機構を有する筆記具に使用すれば、ボールペンリフィールと同じようにカートリッジ型筆記具として使用することができる。   The present invention is configured as described above, and is provided with an automatic feeding mechanism at the front end of a cylindrical main body that automatically feeds the lead with writing, and a tail plug can be attached to and detached from the rear end of the main body. Since the press shaft having a recess formed so as to be inserted into the main body and into which the rear end of the core enters the tip plug is provided in the tail plug, in order to supply a new core into the automatic feeding mechanism, Remove the tail plug and insert the core into the main body, then insert the tail plug's pressing shaft into the main body, and fit the tail plug into the rear of the main body, the rear end of the core enters the recess of the pressing shaft, The core is pushed forward by the pressing shaft and advanced, and the tip is inserted into the automatic feeding mechanism and can be protruded from the tip of the automatic feeding mechanism. In this way, it is possible to replenish without holding one core by hand. When the lead is moved by the pressing shaft, the lead is not likely to be inclined in a state where the rear end is held in the concave portion, and is not broken because it is pushed straight. In addition, since it is only necessary to provide the tail plug at the rear part of the main body, there is no need to form a base detachably on the front part of the main body as in the conventional case, and the cartridge type refill structure with the front part formed in a sealed manner. If it is used for a writing instrument having a conventional knock mechanism, it can be used as a cartridge-type writing instrument in the same way as a ballpoint pen refill.

本考案のシャープペンシルの一実施例を示す半断面図。The half sectional view showing one example of the mechanical pencil of the present invention. 芯を補充する場合の説明図。Explanatory drawing in the case of replenishing a lead. 芯が筆記具本体内に落下した状態の説明図。Explanatory drawing of the state where the lead fell into the writing instrument body. 尾栓を筆記具本体に取り付ける状態を示し、(A)は押圧軸を本体内に挿入した状態、(B)は尾栓を本体に充分に嵌め込んだ状態の各説明図。The state which attaches a tail plug to a writing instrument main body is shown, (A) is the state which inserted the press shaft in the main body, (B) is each explanatory drawing of the state which fully fitted the tail plug in the main body. カートリッジ型シャープペンシルをノック機構を有する軸筒内に組み込んだ実施例を示す断面図。Sectional drawing which shows the Example which incorporated the cartridge type mechanical pencil in the axial cylinder which has a knock mechanism. 他の実施例を示す一部の断面図。FIG. 6 is a partial cross-sectional view showing another embodiment.

図1は、本考案のカートリッジ型シャープペンシル1の一実施例を示し、筒状でカートリッジ型の本体2の先端には、テーパー部材3が設けられ、該テーパー部材3内には、芯4を前方に自動的に繰り出すようにした自動繰出機構が組み込まれている。自動繰出機構は種々に構成できるが、図に示す実施例の自動繰出機構は、上記特許文献1に記載の構成と実質的に同様の構成である。すなわち、テーパー部材3の先部には、スプリング5で前方(先端方向)に付勢されているスライダー6が、前後動可能に挿入され、該スライダーには芯4を弾性的に仮保持するブレーカーゴム等の弾性部材7が設けられている。このスライダー6の後端に対向してチャック部材8が前後動可能に設けられ、上記スプリング5により後方(後端方向)に付勢されている。   FIG. 1 shows an embodiment of a cartridge-type mechanical pencil 1 according to the present invention. A tapered member 3 is provided at the tip of a cylindrical cartridge-type main body 2, and a core 4 is provided in the tapered member 3. An automatic feeding mechanism that automatically feeds forward is incorporated. Although the automatic feeding mechanism can be variously configured, the automatic feeding mechanism of the embodiment shown in the figure has a configuration substantially similar to the configuration described in Patent Document 1. That is, a slider 6 urged forward (in the distal direction) by a spring 5 is inserted at the tip of the taper member 3 so as to be movable back and forth, and a breaker that elastically temporarily holds the core 4 in the slider. An elastic member 7 such as rubber is provided. A chuck member 8 is provided to face the rear end of the slider 6 so as to be movable back and forth, and is urged backward (rear end direction) by the spring 5.

上記チャック部材8は、複数の独立した部片を組み合わせて構成され、後方から前方に拡径したクラッチリング9内に挿入され、該クラッチリング9とチャック部材8の間にはボール10が介在されている。この構成により、芯4がスライダー6の弾性部材7に仮保持されてスプリング5の作用でスライダーとともに前進するときにはボールがクラッチリングの径大部に対応する位置にチャック部材8が微動して芯4の把持を緩め、芯の前進を許容するが、芯4が後退するときには、ボールが径小部に対応する位置にチャック部材8が戻って芯を把持し後退を阻止する。上記クラッチリング9の保持筒11は、内面にチャック部材8の脱落を防止する突起12を有しており、前部がテーパー部材3に装着され、後部には上記本体2が装着され、該保持筒11を介して本体2とテーパー部材3は固定的に連結している。また、保持筒11の後端と本体2の内面に形成した内方突起13の間には、筒状のガイドパイプ14が挟着され、芯4の挿入を案内している。   The chuck member 8 is configured by combining a plurality of independent pieces, and is inserted into a clutch ring 9 whose diameter is increased from the rear to the front, and a ball 10 is interposed between the clutch ring 9 and the chuck member 8. ing. With this configuration, when the core 4 is temporarily held by the elastic member 7 of the slider 6 and moves forward together with the slider by the action of the spring 5, the chuck member 8 slightly moves to a position corresponding to the large diameter portion of the clutch ring and the core 4 However, when the lead 4 moves backward, the chuck member 8 returns to the position corresponding to the small-diameter portion to grip the lead and prevent the backward movement. The holding cylinder 11 of the clutch ring 9 has a protrusion 12 for preventing the chuck member 8 from falling off on the inner surface, the front part is attached to the taper member 3, and the main body 2 is attached to the rear part. The main body 2 and the taper member 3 are fixedly connected via the cylinder 11. A cylindrical guide pipe 14 is sandwiched between the rear end of the holding cylinder 11 and the inward protrusion 13 formed on the inner surface of the main body 2 to guide the insertion of the core 4.

上記本体2の後部には、尾栓15が着脱可能に嵌め込まれている。該尾栓15は、上記本体2とほぼ同径の頭部16とこの頭部から段部17を介して前方に延び上記本体2内に挿入可能な押圧軸18を有している。この押圧軸18の先端には、芯4の後端が入り込む凹部19が形成され、該凹部19は芯4を本体2の中心部で保持できるよう略円錐状に形成されている。この押圧軸18の凹部19と、テーパー部材3に設けた自動繰出機構の先端、図1においては突出状態のスライダー5の先端との間の間隔は、尾栓15を上記本体2に嵌着した状態で、芯4の長さにほぼ等しくなるよう形成されている。   A tail plug 15 is detachably fitted in the rear part of the main body 2. The tail plug 15 has a head 16 having substantially the same diameter as the main body 2 and a pressing shaft 18 that extends forward from the head via a step portion 17 and can be inserted into the main body 2. A concave portion 19 into which the rear end of the core 4 enters is formed at the tip of the pressing shaft 18, and the concave portion 19 is formed in a substantially conical shape so that the core 4 can be held at the central portion of the main body 2. The distance between the recess 19 of the pressing shaft 18 and the tip of the automatic feeding mechanism provided on the taper member 3, that is, the tip of the protruding slider 5 in FIG. In the state, it is formed to be substantially equal to the length of the core 4.

上記構成により芯4を本体2内に補給するには、図2に示すように、先ず尾栓15を本体2から外し、芯4を該本体2内に入れる。すると、図3に示すように、芯4は本体2内の途中まで落下し、先端が上記チャック部材8の後端に当ってとまる。   In order to replenish the core 4 into the main body 2 with the above configuration, the tail plug 15 is first removed from the main body 2 and the core 4 is put into the main body 2 as shown in FIG. Then, as shown in FIG. 3, the core 4 falls halfway in the main body 2, and the front end hits the rear end of the chuck member 8.

次に、図4に示すように上記尾栓15の押圧軸18を上記本体2内に差し込み、凹部19に芯4の後端を入れ込む(同図A)。この状態で芯4は直立状態に保持されるから、尾栓15をさらに本体2内に押し込めば、芯4は押圧軸18に押されてチャック部材8を前進させながらチャック部材内に入り込んでテーパー部材の先端に達して止まり、尾栓15は段部17が本体2の後端に当って止まる(同図B)。このようにして、芯を直接チャック部材内に差し込むというような面倒な手間をかけずに、芯4を補充することができる。   Next, as shown in FIG. 4, the pressing shaft 18 of the tail plug 15 is inserted into the main body 2 and the rear end of the core 4 is inserted into the recess 19 (A in FIG. 4). In this state, the lead 4 is held in an upright state. Therefore, if the tail plug 15 is further pushed into the main body 2, the lead 4 is pushed into the chuck member 8 while being pushed by the pressing shaft 18 to advance the chuck member 8 and is tapered. The tail plug 15 stops when it reaches the leading end of the member, and the stepped portion 17 hits the rear end of the main body 2 (FIG. B). In this way, the lead 4 can be replenished without taking the trouble of inserting the lead directly into the chuck member.

上記の構成により、本発明のシャープペンシルは、本体の前部を着脱可能に構成しなくてもすむから、全体をボールペンリフィールのような細身のカートリッジ型に形成することができる。したがって、図5に示すようなノック式の筆記具に使用することができる。この筆記具は、軸筒20の先端に口金21を有し、軸筒20の外面にはグリップ22が設けられ、後部にはノック式の送出機構が設けられている。この送出機構は、公知の機構であって、筒状部23の内面に固定カムを有し軸筒20の後端から挿入固定される固定カム筒24と、該固定カム筒24の内方に挿入されるノック軸25と、該ノック軸25のノック操作により上記固定カムの作用で回転し、かつ前後方向に移動する回転カム筒26を具備している。   With the above configuration, the mechanical pencil of the present invention does not have to be configured so that the front portion of the main body is detachable, so that the whole can be formed into a thin cartridge type like a ballpoint pen refill. Therefore, it can be used for a knock-type writing instrument as shown in FIG. This writing instrument has a base 21 at the tip of the shaft tube 20, a grip 22 is provided on the outer surface of the shaft tube 20, and a knock-type delivery mechanism is provided at the rear. This delivery mechanism is a known mechanism, and has a fixed cam cylinder 24 that has a fixed cam on the inner surface of the cylindrical portion 23 and is inserted and fixed from the rear end of the shaft cylinder 20, and an inner side of the fixed cam cylinder 24. A knock shaft 25 to be inserted and a rotating cam cylinder 26 that rotates by the action of the fixed cam by the knock operation of the knock shaft 25 and moves in the front-rear direction are provided.

上記軸筒20の内部には、上記カートリッジ型のシャープペンシル1が収納され、ばね27で後方に付勢され、尾栓15部分が上記回転カム筒26の前端に当接している。上記ノック軸25をノックすると、回転カム筒26が前後動し、上記カートリッジ型シャープペンシル1の先端が口金21の先部から突出したり、没入したりして公知のように使用することができる。なお、上記カートリッジ型シャープペンシルの尾栓15と上記送出機構の回転カム筒26の間に、上記ばね27よりも弱く、筆記状態では尾栓15が回転カム筒26に接する程度に弱い衝撃吸収ばね28を設けておけば(図6参照)、カートリッジ型シャープペンシルが受ける衝撃・振動を緩和して芯が自動的に繰り出されないようにできる。また、上記カートリッジ型シャープペンシルは、カートリッジ型以外の種々の形状に形成することもでき、鉛筆型に形成してもよい。   The cartridge-type mechanical pencil 1 is accommodated in the shaft cylinder 20 and is urged rearward by a spring 27, and the tail plug 15 is in contact with the front end of the rotating cam cylinder 26. When the knock shaft 25 is knocked, the rotating cam cylinder 26 moves back and forth, and the tip of the cartridge type mechanical pencil 1 protrudes from the tip of the base 21 or can be used in a known manner. The shock absorbing spring is weaker than the spring 27 between the tail plug 15 of the cartridge-type mechanical pencil and the rotary cam cylinder 26 of the delivery mechanism, and weak enough to contact the rotary cam cylinder 26 in the written state. If 28 is provided (see FIG. 6), the impact and vibration received by the cartridge-type mechanical pencil can be reduced so that the lead is not automatically drawn out. The cartridge type mechanical pencil can be formed in various shapes other than the cartridge type, and may be formed in a pencil type.

1 カートリッジ型シャープペンシル
2 本体
4 芯
15 尾栓
18 押圧軸
19 凹所
DESCRIPTION OF SYMBOLS 1 Cartridge-type mechanical pencil 2 Main body 4 Core 15 Tail plug 18 Pressing shaft 19 Recess

Claims (5)

筆記にともなって芯を自動的に繰り出すようにした自動繰出機構を筒状の本体の先部に設け、該本体の後端に尾栓を着脱可能に嵌着し、該尾栓に、上記本体内に挿入可能に形成され先端に芯の後端が入り込む凹部を有する押圧軸を設けたシャープペンシル。   An automatic feeding mechanism that automatically feeds the lead with writing is provided at the front of the cylindrical main body, and a tail plug is detachably fitted to the rear end of the main body, and the main body is attached to the tail plug. A mechanical pencil provided with a pressing shaft which is formed so as to be insertable therein and has a recess into which the rear end of the core enters. 上記尾栓の押圧軸の凹部と自動繰出機構の先端間の間隔は、尾栓を本体に嵌着した状態で、芯の長さに等しくなるよう形成されている請求項1に記載のシャープペンシル。   2. The mechanical pencil according to claim 1, wherein the distance between the concave portion of the pressing shaft of the tail plug and the tip of the automatic feeding mechanism is formed to be equal to the length of the core when the tail plug is fitted to the main body. . 上記凹部は円錐状に形成されている請求項1又は2に記載のシャープペンシル。   The mechanical pencil according to claim 1 or 2, wherein the recess is formed in a conical shape. 上記本体はカートリッジ型に形成されている請求項1から3のいずれかに記載のシャープペンシル。   The mechanical pencil according to any one of claims 1 to 3, wherein the main body is formed in a cartridge type. 上記カートリッジ型シャープペンシルはノック式の送出機構を後部に有する軸筒内に収納され、前方に設けたばねで上記送出機構に向けて付勢され、該送出機構とカートリッジ型シャープペンシルの尾栓の間には上記ばねよりも弱い衝撃吸収ばねが設けられている請求項4に記載のシャープペンシル。   The cartridge-type mechanical pencil is housed in a barrel having a knock-type delivery mechanism at the rear, and is biased toward the delivery mechanism by a spring provided at the front, and between the delivery mechanism and the tail plug of the cartridge-type mechanical pencil. The mechanical pencil according to claim 4, wherein a shock absorbing spring weaker than the spring is provided.
JP2010004118U 2010-06-17 2010-06-17 mechanical pencil Expired - Fee Related JP3162327U (en)

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JP3162327U true JP3162327U (en) 2010-08-26

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