JP5781830B2 - mechanical pencil - Google Patents

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JP5781830B2
JP5781830B2 JP2011115412A JP2011115412A JP5781830B2 JP 5781830 B2 JP5781830 B2 JP 5781830B2 JP 2011115412 A JP2011115412 A JP 2011115412A JP 2011115412 A JP2011115412 A JP 2011115412A JP 5781830 B2 JP5781830 B2 JP 5781830B2
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cam
chuck
rotating
rotating member
shaft
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JP2012240389A (en
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芳雄 兼子
芳雄 兼子
勇二 河原崎
勇二 河原崎
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Pilot Corp KK
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Pilot Corp KK
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Description

本発明は、筆記によるチャック及び連結具の前後動と連動してスライド部材が前後動することにより芯ホルダーが一方向に回転し、この芯ホルダーの回転に伴い芯及びチャックを回転させる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 that rotates a lead holder in one direction when a slide member moves back and forth in conjunction with the back and forth movement of a chuck and a connector by writing, and rotates the lead and chuck as the lead holder rotates. Is.

一般的に筆記具は若干傾けて筆記するが、シャープペンシルを傾けて筆記すると芯が片減りしてしまうために、芯の端面が楕円状になってしまい筆記幅が次第に太くなってしまうものであった。そのため、細い筆記幅を保つためにはシャープペンシルを回転する必要があった。
この点を解消するために、軸筒内に配設されたチャックユニットの前後動により筆記芯の解除と把持を行い、前記筆記芯を前方に繰り出すことができるように構成されたシャープペンシルであって、前記チャックユニットが、筆記芯を把持した状態で軸芯を中心にして回転可能となるように前記軸筒内に保持されると共に、前記筆記芯の筆記圧による前記チャックユニットの後退動作に伴い、回転子を回転駆動させる回転駆動機構が具備され、前記回転子の回転運動を前記チャックユニットを介して前記筆記芯に伝達するように構成したシャープペンシルが知られている。（特許文献１参照） In general, writing instruments are written with a slight tilt, but when writing with a mechanical pencil tilted, the lead is reduced by one piece, so the end face of the lead becomes elliptical and the writing width gradually increases. It was. Therefore, it was necessary to rotate the mechanical pencil in order to maintain a narrow writing width.
In order to solve this problem, the mechanical pencil is configured so that the writing core can be released and gripped by the longitudinal movement of the chuck unit disposed in the shaft cylinder, and the writing core can be fed forward. The chuck unit is held in the shaft cylinder so as to be rotatable around the shaft core in a state where the writing core is gripped, and the chuck unit is retracted by the writing pressure of the writing core. Accordingly, there is known a mechanical pencil that is provided with a rotation drive mechanism for rotating the rotor and configured to transmit the rotational movement of the rotor to the writing core via the chuck unit. (See Patent Document 1)

しかしながら、上記シャープペンシルは、チャックユニットで把持された芯は回転するが、筆記中の芯が摩耗してチャックユニットで把持されなくなった場合には芯が回転できなくなり、無駄になってしまう芯の量が多くなってしまうものであった。   However, the above-mentioned mechanical pencil rotates the lead gripped by the chuck unit. However, if the lead being worn becomes worn and cannot be gripped by the chuck unit, the lead cannot be rotated and is wasted. The amount would increase.

特許第４２４０４１７号公報Japanese Patent No. 4240417

解決しようとする問題点は、筆記中の芯が短くなってチャックで保持できなくなった場合には芯を回転させることができない点である。   The problem to be solved is that the lead cannot be rotated when the lead being written becomes too short to be held by the chuck.

本発明は、
「１．前軸と後軸とを有し、前記前軸に把持部材を固定して取り付け、前記前軸の内部に芯を保持するチャックを配し、前記チャックの頭部に締具を外嵌し、前記チャックをチャックスプリングにより長手方向後方に付勢し、前記チャックに押圧された前記締具を受け止める連結具をスライド部材に対し回動可能に構成し、前記スライド部材の前部に外面から内面に貫通したキー溝を形成し、前記スライド部材のキー溝に前記前軸の前部内面に内方に突出して形成されたキーが係合し、前記把持部材を固定して取り付けた前軸に対してスライド部材が長手方向に移動可能で回動不能に構成するとともに、前記前軸のキーの一部は前記スライド部材のキー溝より内方に突出して構成し、前記前軸の前方に配設した先部材を前記スライド部材に着脱可能に螺合し、前記先部材に前カムと後カムを形成したカム部材を内蔵し、該先部材に前カムと後カムを形成した回転部材を回動可能に内蔵し、前記カム部材の前カムと前記回転部材の前カムを互いに当接可能に構成するとともに、前記カム部材の後カムと前記回転部材の後カムを互いに当接可能に構成し、前記先部材の後部には後端から切り欠かれて伸びたキー溝が相対位置に形成され、前記先部材のキー溝に前記カム部材の相対位置に形成した突部を挿入して前記スライド部材に螺合した該先部材に対し該カム部材を長手方向には移動可能で回動不能に構成し、前記カム部材の突部を前記前軸のキーに当接させ、前記回転部材の前部に芯をガイドする芯ガイドパイプを固定し、前記回転部材に芯を保持する芯ホルダーを取り付け、筆記による前記チャック及び前記連結具の前後動と連動して前記スライド部材が前後動することにより、前記カム部材と前記回転部材が互いに前後に移動し、前記カム部材の前カムと前記回転部材の前カム及び該カム部材の後カムと該回転部材の後カムが前後して互いに当接することにより前記回転部材が一方向に回転し、前記回転部材と連動して前記芯ホルダーを所定角度毎に回転させ、前記芯ホルダーの回転に伴って該芯ホルダーに適宜の力で保持された芯を回転させることを最も主要な特長とする。
２．前軸と後軸とを有し、前記前軸に把持部材を固定して取り付け、前記前軸の内部に芯を保持するチャックを配し、前記チャックの頭部に締具を外嵌し、前記チャックをチャックスプリングにより長手方向後方に付勢し、前記チャックに押圧された前記締具を受け止める連結具をスライド部材に対し回動可能に構成し、前記スライド部材の前部に外面から内面に貫通したキー溝を形成し、前記スライド部材のキー溝に前記前軸の前部内面に内方に突出して形成されたキーが係合し、前記把持部材を固定して取り付けた前軸に対してスライド部材が長手方向に移動可能で回動不能に構成するとともに、前記前軸のキーの一部は前記スライド部材のキー溝より内方に突出して構成し、前記前軸の前方に配設した先部材を前記スライド部材に着脱可能に螺合し、前記先部材に前カムと後カムを形成したカム部材を内蔵し、前記先部材に前カムと後カムを形成した回転部材を回動可能に内蔵し、前記カム部材の前カムと前記回転部材の前カムを互いに当接可能に構成するとともに、前記カム部材の後カムと前記回転部材の後カムを互いに当接可能に構成し、前記先部材の後部には後端から切り欠かれて伸びたキー溝が相対位置に形成され、前記先部材のキー溝に前記カム部材の相対位置に形成した突部を挿入して前記スライド部材に螺合した該先部材に対し該カム部材を長手方向には移動可能で回動不能に構成し、前記カム部材の突部を前記前軸のキーに当接させ、回転部材の内方に芯ガイドパイプを固定した中駒を配し、中駒に芯を保持する芯ホルダーを取り付け、回転部材に対して中駒及び芯ホルダーを長手方向には移動可能で回動不能に構成し、筆記による前記チャック及び前記連結具の前後動と連動して前記スライド部材が前後動することにより、前記カム部材と前記回転部材が互いに前後に移動し、前記カム部材の前カムと前記回転部材の前カム及び該カム部材の後カムと該回転部材の後カムが前後して互いに当接することにより前記回転部材が一方向に回転し、前記回転部材と連動して前記芯ホルダーを所定角度毎に回転させ、前記芯ホルダーの回転に伴って該芯ホルダーに適宜の力で保持された芯を回転させることを最も主要な特長とする。
３．前軸と後軸とを有し、前記前軸に把持部材を固定して取り付け、前記前軸の内部に芯を保持するチャックを配し、前記チャックの頭部に締具を外嵌し、前記チャックをチャックスプリングにより長手方向後方に付勢し、前記チャックに押圧された前記締具を受け止める連結具をスライド部材に対し回動可能に構成し、前記スライド部材の前部に外面から内面に貫通したキー溝を形成し、前記スライド部材のキー溝に前記前軸の前部内面に内方に突出して形成されたキーが係合し、前記把持部材を固定して取り付けた前軸に対してスライド部材が長手方向に移動可能で回動不能に構成するとともに、前記前軸のキーの一部は前記スライド部材のキー溝より内方に突出して構成し、前記前軸の前方に配設した先部材を前記スライド部材に着脱可能に螺合し、前記先部材に前カムを形成し、内側部前面に後カムを形成した内駒を前記先部材に圧入固着し、前記先部材と前記内駒によりカム部材を構成し、前記先部材内に前カムと後カムを形成した回転部材を長手方向に摺動可能でかつ回動可能に内蔵し、前記カム部材の前カムと前記回転部材の前カムを互いに当接可能に構成するとともに、前記カム部材の後カムと前記回転部材の後カムを互いに当接可能に構成し、前記回転部材の後方に摺動部材を配設し、前記先部材に後端から切り欠かれて伸びたキー溝を相対位置に形成し、前記先部材のキー溝に摺動部材の相対位置に形成された突部を挿入して、前記先部材に対して前記摺動部材を長手方向に移動可能で回動不能に構成し、前記摺動部材の突部は前記先部材の後部表面より外方に突出し、前記摺動部材の突部を前記前軸のキーに当接させるとともに、前記摺動部材の前端に前記回転部材の後端を当接可能に構成し、前記回転部材に芯を保持する芯ホルダーを取り付け、筆記による前記チャック及び前記連結具の前後動と連動して前記スライド部材が前後動することにより、前記カム部材と前記回転部材が互いに前後に移動し、前記カム部材の前カムと前記回転部材の前カム及び該カム部材の後カムと該回転部材の後カムが前後して互いに当接することにより前記回転部材が一方向に回転し、前記回転部材と連動して前記芯ホルダーを所定角度毎に回転させ、前記芯ホルダーの回転に伴って該芯ホルダーに適宜の力で保持された芯を回転させることを最も主要な特長とする。
４．前軸と後軸とを有し、前記前軸に把持部材を固定して取り付け、前記前軸の内部に芯を保持するチャックを配し、前記チャックの頭部に締具を外嵌し、前記チャックをチャックスプリングにより長手方向後方に付勢し、前記チャックに押圧された前記締具を受け止める連結具をスライド部材に対し回動可能に構成し、前記スライド部材の前部に外面から内面に貫通したキー溝を形成し、前記スライド部材のキー溝に前記前軸の前部内面に内方に突出して形成されたキーが係合し、前記把持部材を固定して取り付けた前軸に対してスライド部材が長手方向に移動可能で回動不能に構成するとともに、前記前軸のキーの一部は前記スライド部材のキー溝より内方に突出して構成し、前記前軸の前方に配設した先部材を前記スライド部材に着脱可能に螺合し、前記先部材に内駒を圧入固着し、前記内駒の内側部前面に前カムを形成するとともに、内側部後面に後カムを形成し、前記内駒と前記先部材によりカム部材を構成し、前記先部材内に後カムを形成した回転部材を長手方向に適宜移動可能でかつ回動可能に内蔵し、前記回転部材に前カムを後面に形成した前カム部材を圧入固着し、前記カム部材の前カムと前記前カム部材の前カムを互いに当接可能に構成するとともに、前記カム部材の後カムと前記回転部材の後カムを互いに当接可能に構成し、前記回転部材の後方に摺動部材を配設し、前記先部材に形成したキー溝に摺動部材に形成した突部を挿入し、前記先部材に対して摺動部材を長手方向に移動可能で回動不能に構成し、前記摺動部材の突部は前記先部材の後部表面より円周方向外方に突出し、前記摺動部材の突部を前記前軸のキーに当接させるとともに、前記摺動部材の前端に前記回転部材の後端を当接可能に構成し、前記回転部材に芯を保持する芯ホルダーを取り付け、筆記による前記チャック及び前記連結具の前後動と連動して前記スライド部材が前後動することにより、前記カム部材と前記回転部材が互いに前後に移動し、前記カム部材の前カムと前記回転部材の前カム及び該カム部材の後カムと該回転部材の後カムが前後して互いに当接することにより前記回転部材が一方向に回転し、前記回転部材と連動して前記芯ホルダーを所定角度毎に回転させ、前記芯ホルダーの回転に伴って該芯ホルダーに適宜の力で保持された芯を回転させることを最も主要な特長とする。」である。
The present invention
“1. It has a front shaft and a rear shaft, a gripping member is fixedly attached to the front shaft, a chuck for holding a core is arranged inside the front shaft, and a fastener is attached to the head of the chuck. fitted to, the chuck urges longitudinally rearward by the chuck spring, a connector for receiving the fastener that is pressed against the chuck and configured to be rotatable relative to the slide member, the outer surface on the front of the slide member A key groove penetrating from the inner surface to the inner surface is formed, and the key formed by projecting inwardly from the front inner surface of the front shaft is engaged with the key groove of the slide member, and the grip member is fixedly attached. The slide member is movable in the longitudinal direction with respect to the shaft and cannot rotate, and a part of the key of the front shaft protrudes inward from the key groove of the slide member, and the front of the front shaft The tip member disposed on the slide member is attached to the slide member. Capable screwed, the destination member incorporates a cam member formed with front cam and a rear cam, a rotary member formed with front cam and a rear cam tip member incorporating rotatably, the cam member with each other can contact configure front cam of the rotary member and the front cam, wherein one another can contact configured cam after the cam and the rotary member after the cam member, the rear end a rear portion of the destination member A key groove that is cut out from the key member is formed at a relative position, and a protrusion formed at a relative position of the cam member is inserted into the key groove of the tip member, and the tip member is screwed into the slide member. The cam member is configured to be movable in the longitudinal direction but not rotatable, and a core guide pipe that guides the core to the front portion of the rotating member by bringing the protrusion of the cam member into contact with the key of the front shaft. fixed, fitted with a wick holder for holding the core to the rotary member, writing Said chuck and said sliding member in conjunction with longitudinal movement of the connector is by moving back and forth with the move in the longitudinal cam member and the rotary member with each other, prior to said rotating member and the front cam of the cam member It said rotating member is rotated in one direction by the cam following the cam and the rotary member after the cam and the cam member comes into contact with each other back and forth, rotating the wick holder every predetermined angle in association with the rotating member It is allowed, the most important feature to rotate the core held by the appropriate force to the wick holder with the rotation of the wick holder.
2. It has a front shaft and a rear shaft, a fixing member is fixedly attached to the front shaft, a chuck for holding a core is arranged inside the front shaft, and a fastener is externally fitted to the head of the chuck, The chuck is urged rearward in the longitudinal direction by a chuck spring, and a connecting member for receiving the fastener pressed by the chuck is configured to be rotatable with respect to the slide member. A key groove penetrating is formed, and a key formed by projecting inwardly on the inner surface of the front part of the front shaft is engaged with the key groove of the slide member, and the gripping member is fixedly attached to the front shaft. The slide member is movable in the longitudinal direction and cannot be rotated, and a part of the key of the front shaft protrudes inward from the key groove of the slide member, and is disposed in front of the front shaft. Removable tip member can be attached to and removed from the slide member A front cam and a rear cam formed on the front member are screwed together, and a rotary member formed with a front cam and a rear cam is rotatably built in the front member. And the front cam of the rotating member are configured to be able to contact each other, and the rear cam of the cam member and the rear cam of the rotating member are configured to be able to contact each other, and the rear portion of the tip member is cut from the rear end. A key groove extending in a missing part is formed at a relative position, and a cam is inserted into the key groove of the tip member and a protrusion formed at the relative position of the cam member is inserted into the slide member and the cam is engaged with the tip member. The member is configured to be movable in the longitudinal direction but not to be rotatable. The protrusion of the cam member is brought into contact with the key of the front shaft, and a center piece having a core guide pipe fixed to the inside of the rotating member is arranged. Attach the lead holder to hold the lead to the middle piece, The wick holder is configured to non-rotatably movable in the longitudinal direction, by the slide member is moved back and forth in conjunction with the longitudinal movement of said chuck and said coupling by writing, the rotating member and the cam member When the front cam of the cam member, the front cam of the rotating member, the rear cam of the cam member, and the rear cam of the rotating member come in contact with each other back and forth, the rotating member rotates in one direction. The main feature is that the lead holder is rotated at a predetermined angle in conjunction with the rotating member, and the lead held by the lead holder with an appropriate force is rotated as the lead holder rotates. To do.
3. It has a front shaft and a rear shaft, a fixing member is fixedly attached to the front shaft, a chuck for holding a core is arranged inside the front shaft, and a fastener is externally fitted to the head of the chuck, The chuck is urged rearward in the longitudinal direction by a chuck spring, and a connecting member for receiving the fastener pressed by the chuck is configured to be rotatable with respect to the slide member. A key groove penetrating is formed, and a key formed by projecting inwardly on the inner surface of the front part of the front shaft is engaged with the key groove of the slide member, and the gripping member is fixedly attached to the front shaft. The slide member is movable in the longitudinal direction and cannot be rotated, and a part of the key of the front shaft protrudes inward from the key groove of the slide member, and is disposed in front of the front shaft. Removable tip member can be attached to and removed from the slide member Screwed, the destination member to form a front cam, pressed fixing the Uchikoma forming a rear cam to the destination member to the inner portion front constitutes the cam member by said frame and said destination member, the destination A rotating member having a front cam and a rear cam formed in the member is slidable and rotatable in the longitudinal direction, and the front cam of the cam member and the front cam of the rotating member are configured to contact each other. In addition, the rear cam of the cam member and the rear cam of the rotating member are configured to be able to contact each other , a sliding member is disposed behind the rotating member, and the tip member is cut out from the rear end to extend. The keyway is formed at a relative position, and the protrusion formed at the relative position of the sliding member is inserted into the keyway of the tip member so that the sliding member can be moved in the longitudinal direction with respect to the tip member. And the protrusion of the sliding member protrudes outward from the rear surface of the tip member. And, is brought into contact with projections of the sliding member to a key of the front shaft, said rear end of said rotary member to the front end of the sliding member configured to be contact, for holding the core to the rotary member A lead holder is attached, and when the slide member moves back and forth in conjunction with the back and forth movement of the chuck and the connecting tool by writing, the cam member and the rotating member move back and forth with each other, and the front cam of the cam member And the front cam of the rotating member and the rear cam of the cam member and the rear cam of the rotating member abut each other so that the rotating member rotates in one direction, and the lead holder interlocks with the rotating member. And the core held by the core holder with an appropriate force according to the rotation of the core holder.
4). It has a front shaft and a rear shaft, a fixing member is fixedly attached to the front shaft, a chuck for holding a core is arranged inside the front shaft, and a fastener is externally fitted to the head of the chuck, The chuck is urged rearward in the longitudinal direction by a chuck spring, and a connecting member for receiving the fastener pressed by the chuck is configured to be rotatable with respect to the slide member. A key groove penetrating is formed, and a key formed by projecting inwardly on the inner surface of the front part of the front shaft is engaged with the key groove of the slide member, and the gripping member is fixedly attached to the front shaft. The slide member is movable in the longitudinal direction and cannot be rotated, and a part of the key of the front shaft protrudes inward from the key groove of the slide member, and is disposed in front of the front shaft. Removable tip member can be attached to and removed from the slide member Screwed, the inner frame pressed fixed to the target member, to form a front cam inside portion front surface of the inner piece to form a rear cam to the inner portion rear surface, the cam member by said destination member and the inner frame And a rotary member having a rear cam formed in the tip member is built in the longitudinal direction so that it can be appropriately moved and rotated, and a front cam member having a front cam formed on the rear surface is press-fitted and fixed to the rotary member. The front cam of the cam member and the front cam of the front cam member are configured to be able to contact each other, and the rear cam of the cam member and the rear cam of the rotating member are configured to be able to contact each other , A sliding member is arranged at the rear, and a protrusion formed on the sliding member is inserted into a key groove formed on the leading member. The sliding member can be moved in the longitudinal direction with respect to the leading member and cannot be rotated. The protrusion of the sliding member is circumferential from the rear surface of the tip member. Projects toward the outside, is brought into contact with projections of the sliding member to a key of the front axle, the rear end of the rotary member configured to be brought into contact with the front end of the sliding member, said rotary member A lead holder for holding a lead is attached, and the slide member moves back and forth in conjunction with the back and forth movement of the chuck and the connecting tool by writing, whereby the cam member and the rotating member move back and forth with respect to each other. When the front cam of the member, the front cam of the rotating member, and the rear cam of the cam member and the rear cam of the rotating member come in contact with each other, the rotating member rotates in one direction and interlocks with the rotating member. The most important feature is that the lead holder is rotated by a predetermined angle, and the lead held by the lead holder with an appropriate force is rotated as the lead holder rotates. It is.

本発明は、筆記によるチャック及び連結具の前後動と連動してスライド部材が前後動することにより芯ホルダーが一方向に回転し、この芯ホルダーの回転に伴い芯を回転させるので、チャックに保持されなくなった短い芯でも回転させることができる利点が得られるものである。   In the present invention, the lead holder rotates in one direction by moving the slide member back and forth in conjunction with the back and forth movement of the chuck and the coupling tool by writing, and the lead is rotated in accordance with the rotation of the lead holder. The advantage is that even a short core that is no longer used can be rotated.

図１は、本発明の実施例１のシャープペンシルを示す断面図である。（実施例１）FIG. 1 is a cross-sectional view showing a mechanical pencil of Example 1 of the present invention. (Example 1) 図２は、本発明の実施例１のシャープペンシルを示す主要部拡大断面図である。（実施例１）FIG. 2 is an enlarged cross-sectional view of a main part showing the mechanical pencil according to the first embodiment of the present invention. (Example 1) 図３は、図２のＡ−Ａ線を示す拡大断面図である。（実施例１）3 is an enlarged cross-sectional view taken along line AA of FIG. (Example 1) 図４は、図２における摺動部材と回転部材による回転機構の展開状態を示す主要部拡大説明図である。（実施例１）FIG. 4 is an enlarged explanatory view of a main part showing a developed state of the rotating mechanism by the sliding member and the rotating member in FIG. (Example 1) 図５は、本発明の実施例１のシャープペンシルにおいて筆圧を加えた状態を示す主要部拡大断面図である。（実施例１）FIG. 5 is an enlarged cross-sectional view of a main part showing a state in which writing pressure is applied to the mechanical pencil according to the first embodiment of the present invention. (Example 1) 図６は、図５における摺動部材と回転部材の回転機構の展開状態を示す主要部拡大説明図である。（実施例１）FIG. 6 is an enlarged explanatory view of a main part showing a developed state of the rotating mechanism of the sliding member and the rotating member in FIG. (Example 1) 図７は、図５の状態から筆圧を解除した状態における摺動部材と回転部材の回転機構の展開状態を示す主要部拡大説明図である。（実施例１）FIG. 7 is an enlarged explanatory view of a main part showing a developed state of the rotating mechanism of the sliding member and the rotating member in a state where the writing pressure is released from the state of FIG. (Example 1) 図８は、本発明の実施例２のシャープペンシルを示す断面図である。（実施例２）FIG. 8 is a cross-sectional view showing a mechanical pencil of Example 2 of the present invention. (Example 2) 図９は、本発明の実施例２のシャープペンシルにおいて筆圧を加えた状態を示す主要部断面図である。（実施例２）FIG. 9 is a cross-sectional view of the main part showing a state in which writing pressure is applied to the mechanical pencil according to the second embodiment of the present invention. (Example 2) 図１０は、本発明の実施例３のシャープペンシルを示す断面図である。（実施例３）FIG. 10 is a cross-sectional view showing a mechanical pencil of Example 3 of the present invention. (Example 3) 図１１は、本発明の実施例４のシャープペンシルを示す主要部拡大断面図である。（実施例４）FIG. 11 is an enlarged cross-sectional view of a main part showing a mechanical pencil of Example 4 of the present invention. (Example 4) 図１２は、図１１における摺動部材と回転部材の回転機構の展開状態を示す主要部拡大説明図である。（実施例４）FIG. 12 is an enlarged explanatory view of a main part showing a developed state of the rotating mechanism of the sliding member and the rotating member in FIG. (Example 4) 図１３は、実施例４のシャープペンシルにおいて、筆圧を加えた状態を示す主要部拡大断面図である。（実施例４）FIG. 13 is an enlarged cross-sectional view of a main part showing a state in which writing pressure is applied in the mechanical pencil of the fourth embodiment. (Example 4) 図１４は、図１３における摺動部材と回転部材の回転機構の展開状態を示す主要部拡大説明図である。（実施例４）FIG. 14 is an enlarged explanatory view of a main part showing a developed state of the rotating mechanism of the sliding member and the rotating member in FIG. (Example 4) 図１５は、本発明の実施例５のシャープペンシルを示す主要部拡大断面図である。（実施例５）FIG. 15 is an enlarged cross-sectional view of a main part showing a mechanical pencil according to a fifth embodiment of the present invention. (Example 5) 図１６は、実施例５のシャープペンシルにおいて筆圧を加えた状態を示す主要部拡大断面図である。（実施例５）FIG. 16 is an enlarged cross-sectional view of a main part showing a state in which writing pressure is applied to the mechanical pencil of Example 5. (Example 5) 図１７は、本発明の実施例６のシャープペンシルを示す主要部拡大断面図である。（実施例６）FIG. 17 is an enlarged cross-sectional view of a main part showing a mechanical pencil of Example 6 of the present invention. (Example 6) 図１８は、実施例６のシャープペンシルにおいて、筆圧を加えた状態を示す主要部拡大断面図である。（実施例６）FIG. 18 is an enlarged cross-sectional view of a main part showing a state in which writing pressure is applied to the mechanical pencil of Example 6. (Example 6) 図１９は、本発明の実施例７のシャープペンシルを示す主要部拡大断面図である。（実施例７）FIG. 19 is an enlarged cross-sectional view of a main part showing a mechanical pencil of Example 7 of the present invention. (Example 7) 図２０は、本発明の実施例８のシャープペンシルを示す主要部拡大断面図である。（実施例８）FIG. 20 is an enlarged cross-sectional view of a main part showing a mechanical pencil according to an eighth embodiment of the present invention. (Example 8) 図２１は、本発明の実施例９のシャープペンシルを示す主要部断面図である。（実施例９）FIG. 21 is a cross-sectional view of the main part showing the mechanical pencil of Example 9 of the present invention. Example 9 図２２は、本発明の実施例９のシャープペンシルを示す主要部拡大断面図である。（実施例９）FIG. 22 is an enlarged cross-sectional view of the main part showing the mechanical pencil of Example 9 of the present invention. Example 9 図２３は、本発明の実施例１０のシャープペンシルを示す主要部拡大断面図である。（実施例１０）FIG. 23 is an enlarged cross-sectional view of the main part showing the mechanical pencil of Example 10 of the present invention. (Example 10) 図２４は、図２３のシャープペンシルを示す主要部拡大平面図である。（実施例１０）FIG. 24 is an enlarged plan view of a main part showing the mechanical pencil of FIG. (Example 10) 図２５は、本発明の実施例１１のシャープペンシルを示す主要部拡大断面図である。（実施例１１）FIG. 25 is an enlarged cross-sectional view of the main part showing the mechanical pencil of Example 11 of the present invention. (Example 11) 図２６は、実施例１１のシャープペンシルにおいて、芯の回転を防止した状態を示す主要部拡大断面図である。（実施例１１）FIG. 26 is an enlarged cross-sectional view of a main part showing a state in which the lead is prevented from rotating in the mechanical pencil of the eleventh embodiment. (Example 11) 図２７は、本発明の実施例１２のシャープペンシルを示す主要部拡大断面図である。（実施例１２）FIG. 27 is an enlarged cross-sectional view of a main part showing a mechanical pencil of Example 12 of the present invention. (Example 12) 図２８は、図２７におけるロック部材のカム部と前軸のカム部の展開状態を示す主要部拡大説明図である。（実施例１２）FIG. 28 is an enlarged explanatory view of a main part showing a developed state of the cam part of the lock member and the cam part of the front shaft in FIG. (Example 12) 図２９は、実施例１２のシャープペンシルにおいて、芯の回転を防止した状態を示す主要部拡大断面図である。（実施例１２）FIG. 29 is an enlarged cross-sectional view of a main part showing a state in which the lead is prevented from rotating in the mechanical pencil of the twelfth embodiment. (Example 12) 図３０は、図２９におけるロック部材のカム部と前軸のカム展開状態を示す主要部拡大説明図である。（実施例１２）FIG. 30 is an enlarged explanatory view of a main part showing a cam deployed state of the cam part of the locking member and the front shaft in FIG. (Example 12) 図３１は、本発明の実施例１３のシャープペンシルを示す主要部断面図である。（実施例１３）FIG. 31 is a cross-sectional view of a main part showing a mechanical pencil of Example 13 of the present invention. (Example 13) 図３２は、実施例１３のシャープペンシルにおいて、芯の回転を防止した状態を示す主要部断面図である。（実施例１３）FIG. 32 is a cross-sectional view of a principal part showing a state where the rotation of the lead is prevented in the mechanical pencil of the thirteenth embodiment. (Example 13) 図３３は、本発明の実施例１４のシャープペンシルを示す主要部断面図である。（実施例１４）FIG. 33 is a cross-sectional view of a principal part showing a mechanical pencil of Example 14 of the present invention. (Example 14) 図３４は、本発明の実施例１５のシャープペンシルを示す主要部断面図である。（実施例１５）FIG. 34 is a cross-sectional view of the main part showing the mechanical pencil of Example 15 of the present invention. (Example 15) 図３５は、実施例１５のシャープペンシルにおける緩衝材を示す拡大正面図である。（実施例１５）FIG. 35 is an enlarged front view showing a cushioning material in the mechanical pencil of Example 15. (Example 15) 図３６は、図３５の拡大右側面図である。（実施例１５）FIG. 36 is an enlarged right side view of FIG. (Example 15) 図３７は、本発明の実施例１６のシャープペンシルを示す主要部拡大断面図である。（実施例１６）FIG. 37 is an enlarged cross-sectional view of the main part showing the mechanical pencil of Example 16 of the present invention. (Example 16) 図３８は、図３７における前軸、スライド部材および摺動部材を示す主要部拡大断面図である。（実施例１６）FIG. 38 is an enlarged cross-sectional view of the main part showing the front shaft, slide member, and slide member in FIG. (Example 16) 図３９は、図３８のＡ−Ａ線を示す拡大断面図である。（実施例１６）FIG. 39 is an enlarged sectional view taken along line AA in FIG. (Example 16) 図４０は、本発明の実施例１７のシャープペンシルを示す断面図である。（実施例１７）FIG. 40 is a cross-sectional view showing the mechanical pencil of Example 17 of the present invention. (Example 17) 図４１は、本発明の実施例１８のシャープペンシルを示す主要部拡大断面図である。（実施例１８）FIG. 41 is an enlarged cross-sectional view of a main part showing a mechanical pencil of Example 18 of the present invention. (Example 18)

本発明は、筆記によるチャック及び連結具の前後動と連動してスライド部材が前後動することにより芯ホルダーが一方向に回転し、この芯ホルダーの回転に伴い芯を回転させるシャープペンシルを実現した。   The present invention realizes a mechanical pencil in which the lead holder rotates in one direction by moving the slide member back and forth in conjunction with the back and forth movement of the chuck and the connecting tool by writing, and the lead rotates with the rotation of the lead holder. .

以下、図１、図２、図３、図４、図５、図６及び図７に基づいて、本発明における実施例１のシャープペンシルを説明する。また、図１の左側を前方とし、右側を後方とする。先ず、図１及び図２において、シリコンゴム等の軟質材で構成された把持部材１を前軸２に固定して取り付ける。この前軸２に前方よりスライド部材３を挿入するとともに後方より固定駒４を挿入し、スライド部材３と固定駒４を圧入固着する。このスライド部材３の後端と固定駒４の外段４Ａとの間に前軸２の内鍔２Ａを位置させ、前記前軸２の内鍔２Ａはスライド部材３の後端と固定駒４の外段４Ａの間を適宜前後動可能に構成する。また、スライド部材３の前部には円周方向等間隔に４個貫通したキー溝３Ａを形成し、このキー溝３Ａに前軸２の前部内面に内方に突出して形成されたキー２Ｂが係合し、スライド部材３と前軸２は長手方向には適宜移動可能でかつ回動不能に構成される。更に、前軸２のキー２Ｂの一部はスライド部材３の貫通したキー溝３Ａより内方に突出して構成される。   Hereinafter, the mechanical pencil according to the first embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, 4, 5, 6, and 7. Moreover, let the left side of FIG. 1 be the front, and let the right side be back. First, in FIG.1 and FIG.2, the holding member 1 comprised with soft materials, such as a silicone rubber, is fixed and attached to the front shaft 2. FIG. The slide member 3 is inserted into the front shaft 2 from the front and the fixed piece 4 is inserted from the rear, and the slide member 3 and the fixed piece 4 are press-fitted and fixed. An inner flange 2A of the front shaft 2 is positioned between the rear end of the slide member 3 and the outer stage 4A of the fixed piece 4, and the inner flange 2A of the front shaft 2 is located between the rear end of the slide member 3 and the fixed piece 4. The outer stage 4A is configured to be movable back and forth as appropriate. Further, four key grooves 3A penetrating at equal intervals in the circumferential direction are formed in the front portion of the slide member 3, and the key 2B formed inwardly projecting on the inner surface of the front portion of the front shaft 2 in the key groove 3A. Are engaged, and the slide member 3 and the front shaft 2 are configured to be appropriately movable in the longitudinal direction and not rotatable. Further, a part of the key 2B of the front shaft 2 is configured to protrude inward from the key groove 3A through which the slide member 3 passes.

シャープペンシルの機構部は、頭部５Ａが数分割されたチャック５と、チャック５の頭部５Ａに外嵌される締具６と、チャック５の後部に固着されるコネクター７と、コネクター７に圧入固着されるパイプ状の芯タンク８と、締具６を受け止める連結具９と、連結具９とコネクター７の間に取付時荷重が１００ｇ程度で取り付けられるチャックスプリング１０とにより構成される。更に、芯タンク８の前部にゴム等の軟質材からなる前Ｏリング１１をコネクター７の外鍔７Ａと接触させて取り付ける。   The mechanical part of the mechanical pencil includes a chuck 5 having a head portion 5A divided into several parts, a fastener 6 fitted to the head portion 5A of the chuck 5, a connector 7 fixed to the rear portion of the chuck 5, and a connector 7. A pipe-shaped core tank 8 to be press-fitted and fixed, a connecting tool 9 for receiving the fastener 6, and a chuck spring 10 attached between the connecting tool 9 and the connector 7 with a load of about 100 g. Further, a front O-ring 11 made of a soft material such as rubber is attached to the front portion of the core tank 8 in contact with the outer casing 7 A of the connector 7.

前記機構部をスライド部材３の前方より挿入し、スライド部材３の内鍔３Ｂを連結具９の後部外鍔９Ａが挿通し、スライド部材３の内鍔３Ｂが連結具９の前部外鍔９Ｂと後部外鍔９Ａの間に回動自在に係合される。   The mechanism portion is inserted from the front of the slide member 3, the rear outer collar 9 </ b> A of the coupling member 9 is inserted through the inner collar 3 </ b> B of the sliding member 3, and the inner collar 3 </ b> B of the sliding member 3 is inserted into the front outer collar 9 </ b> B of the coupling tool 9. And the rear outer casing 9A are rotatably engaged.

更に、先部材１２の後部には後端から切り欠かれて伸びたキー溝１２Ａが相対位置に形成される。また、前部に芯ガイドパイプ１３を固定した回転部材１４を先部材１２に回動可能に内蔵する。この回転部材１４に芯１５を５０ｇ程度の摩擦力で保持するゴム製の芯ホルダー１６を取り付ける。   Further, a key groove 12A that is notched and extended from the rear end is formed in the rear portion of the front member 12 at a relative position. Further, a rotating member 14 having a lead guide pipe 13 fixed to the front portion is rotatably incorporated in the tip member 12. A rubber core holder 16 that holds the core 15 with a frictional force of about 50 g is attached to the rotating member 14.

次に、前記回転部材１４を回転させるための回転機構を説明する。図４に示したように、回転部材１４に、前外鍔の後面に形成した前カム１４Ａと後外鍔の前面に形成した後カム１４Ｂを構成する。この回転部材１４の前カム１４Ａは、右回転方向に向かって後方に傾斜する多数の傾斜面１４Ｃと、傾斜面１４Ｃと傾斜面１４Ｃの間に位置する垂直面１４Ｄにより構成する。また、回転部材１４の後カム１４Ｂは、右回転方向に向かって前方に傾斜する多数の傾斜面１４Ｅと、傾斜面１４Ｅと傾斜面１４Ｅの間に位置する垂直面１４Ｆにより構成する。更に、カム部材としての摺動部材１７の内側部に、前端面に形成した前カム１７Ａと後段面に形成した後カム１７Ｂを構成する。この摺動部材１７の前カム１７Ａは、左回転方向に向かって前方に傾斜する多数の傾斜面１７Ｃと、傾斜面１７Ｃと傾斜面１７Ｃの間に位置する垂直面１７Ｄにより構成する。また、摺動部材１７の後カム１７Ｂは、左回転方向に向かって後方に傾斜する多数の傾斜面１７Ｅと、傾斜面１７Ｅと傾斜面１７Ｅの間に位置する垂直面１７Ｆにより構成する。更に、摺動部材１７の前カム１７Ａの傾斜面１７Ｃと後カム１７Ｂの傾斜面１７Ｅは同数で、前カム１７Ａの垂直面１７Ｄと後カム１７Ｂの垂直面１７Ｆが長手方向に合わされている。また、回転部材１４の前カム１４Ａの傾斜面１４Ｃと後カム１４Ｂの傾斜面１４Ｅも摺動部材１７の前カム１７Ａの傾斜面１７Ｃ及び後カム１７Ｂの傾斜面１７Ｅと同数で、前カム１４Ａの傾斜面１４Ｃの略中心に後カム１４Ｂの垂直面１４Ｆが位置する。前記摺動部材１７の内側部を前記回転部材１４の前カム１４Ａと後カム１４Ｂの間に取り付け、回転部材１４の前カム１４Ａと摺動部材１７の前カム１７Ａを対面させるとともに、回転部材１４の後カム１４Ｂと摺動部材１７の後カム１７Ｂを対面させて構成する。また、回転部材１４に対し摺動部材１７は長手方向に適宜前後動可能に構成し、回転部材１４の前カム１４Ａと摺動部材１７の前カム１７Ａ及び回転部材１４の後カム１４Ｂと摺動部材１７の後カム１７Ｂは当接可能に構成される。 Next, a rotating mechanism for rotating the rotating member 14 will be described. As shown in FIG. 4, the rotating member 14 includes a front cam 14A formed on the rear surface of the front outer casing and a rear cam 14B formed on the front surface of the rear outer casing. The front cam 14A of the rotating member 14 includes a large number of inclined surfaces 14C that are inclined rearward in the right rotation direction, and a vertical surface 14D that is positioned between the inclined surfaces 14C and 14C. Further, the rear cam 14B of the rotating member 14 includes a large number of inclined surfaces 14E that are inclined forward in the right rotation direction, and a vertical surface 14F that is positioned between the inclined surfaces 14E and 14E. Further, a front cam 17A formed on the front end surface and a rear cam 17B formed on the rear stage surface are formed on the inner side of the sliding member 17 as a cam member. The front cam 17A of the sliding member 17 is constituted by a large number of inclined surfaces 17C that are inclined forward in the counterclockwise direction and a vertical surface 17D that is located between the inclined surfaces 17C and 17C. Further, the rear cam 17B of the sliding member 17 includes a large number of inclined surfaces 17E that are inclined backward in the counterclockwise rotation direction, and a vertical surface 17F that is positioned between the inclined surfaces 17E and 17E. Further, the inclined surface 17C of the front cam 17A and the inclined surface 17E of the rear cam 17B of the sliding member 17 are the same number , and the vertical surface 17D of the front cam 17A and the vertical surface 17F of the rear cam 17B are aligned in the longitudinal direction. Further, the inclined surface 14C of the front cam 14A of the rotating member 14 and the inclined surface 14E of the rear cam 14B are the same as the inclined surface 17C of the front cam 17A of the sliding member 17 and the inclined surface 17E of the rear cam 17B . The vertical surface 14F of the rear cam 14B is located substantially at the center of the inclined surface 14C. The inner portion of the sliding member 17 is attached between the front cam 14A and the rear cam 14B of the rotating member 14, and the front cam 14A of the rotating member 14 and the front cam 17A of the sliding member 17 face each other. The rear cam 14B and the rear cam 17B of the sliding member 17 are configured to face each other. Further, the sliding member 17 is configured to be able to move back and forth appropriately in the longitudinal direction with respect to the rotating member 14, and slides with the front cam 14A of the rotating member 14, the front cam 17A of the sliding member 17, and the rear cam 14B of the rotating member 14. The rear cam 17B of the member 17 is configured to be able to abut.

この回転部材１４及び摺動部材１７は先部材１２に内蔵されるが、先部材１２のキー溝１２Ａに摺動部材１７の相対位置に形成された突部１７Ｇが挿入され、先部材１２に対して摺動部材１７は長手方向に移動可能で回動不能に構成される。また、摺動部材１７の突部１７Ｇは先部材１２の後部周面より円周方向外方に突出する。また、先部材１２の内段１２Ｂと摺動部材１７の外段１７Ｈとの間に前スプリング１８を取り付け、摺動部材１７を長手方向後方に付勢する。 The rotating member 14 and the sliding member 17 are built in the tip member 12, but a protrusion 17 </ b> G formed at a relative position of the sliding member 17 is inserted into the key groove 12 </ b> A of the tip member 12. Thus, the sliding member 17 is configured to be movable in the longitudinal direction but not rotatable. Further, the protrusion 17G of the sliding member 17 protrudes outward in the circumferential direction from the rear peripheral surface of the tip member 12. Further, a front spring 18 is attached between the inner stage 12B of the tip member 12 and the outer stage 17H of the sliding member 17, and the sliding member 17 is urged rearward in the longitudinal direction.

上記先部材１２を前記スライド部材３に着脱可能に螺合し、先部材１２の係止段１２Ｃと連結具９の前端との間に回転部材１４を回動可能に内蔵し、取付時荷重１００ｇ程度で取り付けられた前スプリング１８により長手方向後方に付勢された摺動部材１７の後カム１７Ｂを回転部材１４の後カム１４Ｂに当接するとともに、摺動部材１７の突部１７Ｇを前軸２のキー２Ｂに当接させる。すると、前軸２の内鍔２Ａが固定駒４の外段４Ａに当接される。   The tip member 12 is detachably screwed to the slide member 3, and a rotating member 14 is rotatably incorporated between the locking step 12C of the tip member 12 and the front end of the connector 9, and a load at the time of installation of 100g. The rear cam 17B of the sliding member 17 urged rearward in the longitudinal direction by the front spring 18 attached to the extent is brought into contact with the rear cam 14B of the rotating member 14, and the protrusion 17G of the sliding member 17 is brought into contact with the front shaft 2. The key 2B is brought into contact. Then, the inner flange 2 </ b> A of the front shaft 2 is brought into contact with the outer stage 4 </ b> A of the fixed piece 4.

更に、前軸２の後方から円筒状の重量体１９を挿入し、重量体１９を芯タンク８の外面と固定駒４の内面の間に長手方向に摺動可能に遊嵌する。尚、芯タンク８の外面と重量体１９の内面との隙間より重量体１９の外面と固定駒４の内面との隙間を狭く構成する。   Further, a cylindrical weight body 19 is inserted from the rear of the front shaft 2, and the weight body 19 is loosely fitted between the outer surface of the core tank 8 and the inner surface of the fixed piece 4 so as to be slidable in the longitudinal direction. The gap between the outer surface of the weight body 19 and the inner surface of the fixed piece 4 is narrower than the gap between the outer surface of the core tank 8 and the inner surface of the weight body 19.

後軸２０にはクリップ２１が一体に構成されるとともに、後軸２０の前方より中子２２を挿入する。この中子２２には内鍔２２Ａ前端にゴム等の軟質材からなる後Ｏリング２３を圧入固着する。また、後軸２０の後方より押圧部材２４を挿入し、中子２２の開口窓２２Ｂに押圧部材２４の係止突起２４Ａを係止するとともに押圧部材２４の前端を中子２２の内鍔２２Ａに当接し、中子２２と押圧部材２４を連結する。更に、後軸２０の内鍔２０Ａと押圧部材２４の外段２４Ｂとの間には取付時荷重３００ｇ程度でリターンスプリング２５を取り付け、押圧部材２４を長手方向後方に付勢する。この押圧部材２４には内孔２４Ｃが形成されて芯１５が通過可能に構成されるとともに、押圧部材２４の後部内側に消しゴム２６が取り付けられる。また、押圧部材２４の後部外側には消しゴム２６を覆うためにノブ２７が着脱可能に嵌合される。   A clip 21 is integrally formed on the rear shaft 20 and a core 22 is inserted from the front of the rear shaft 20. A rear O-ring 23 made of a soft material such as rubber is press-fitted and fixed to the core 22 at the front end of the inner flange 22A. Further, the pressing member 24 is inserted from the rear of the rear shaft 20, and the locking projection 24 </ b> A of the pressing member 24 is locked to the opening window 22 </ b> B of the core 22, and the front end of the pressing member 24 is connected to the inner flange 22 </ b> A of the core 22. It abuts and connects the core 22 and the pressing member 24. Further, a return spring 25 is attached between the inner flange 20A of the rear shaft 20 and the outer stage 24B of the pressing member 24 with an attachment load of about 300 g, and the pressing member 24 is urged rearward in the longitudinal direction. An inner hole 24 </ b> C is formed in the pressing member 24 so that the core 15 can pass therethrough, and an eraser 26 is attached to the rear inner side of the pressing member 24. In addition, a knob 27 is detachably fitted to the rear outer side of the pressing member 24 so as to cover the eraser 26.

この後軸２０を前記前軸２に着脱可能に螺合するとともに、芯タンク８内に予備の芯１５を収納して振出式のシャープペンシルを構成する。   The rear shaft 20 is detachably screwed to the front shaft 2 and a spare core 15 is accommodated in the core tank 8 to form a swing-out type mechanical pencil.

前記シャープペンシルで筆記を行うと、芯１５が紙面に押圧され図５に示したように、筆圧を受けるチャック５、締具６、連結具９、スライド部材３、固定駒４、先部材１２及び回転部材１４は停止しているが、スライド部材３に対し手で把持された前軸２及び把持部材１は前進し、前軸２のキー２Ｂに突部１７Ｇが当接した摺動部材１７も前軸２とともに前スプリング１８を圧縮しながら前進する。すると、摺動部材１７の前カム１７Ａが回転部材１４の前カム１４Ａに当接し、摺動部材１７の前カム１７Ａの傾斜面１７Ｃが回転部材１４の前カム１４Ａの傾斜面１４Ｃに当接する。しかし、摺動部材１７は突部１７Ｇが先部材１２のキー溝１２Ａに挿入されて回動不能となっているので、回転部材１４の前カム１４Ａの傾斜面１４Ｃが摺動部材１７の前カム１７Ａの傾斜面１７Ｃの略半分を滑って、図６に示したように回転部材１４が前方に対して右回転する。回転部材１４とともに回転部材１４に取り付けられた芯ホルダー１６が右回転すると芯１５も右に回転する。この時、芯１５を保持するチャック５も、締具６及び連結具９とともにスライド部材３に対して右に回転する。   When writing with the mechanical pencil, the core 15 is pressed against the paper surface, and as shown in FIG. 5, the chuck 5 receiving the writing pressure, the fastener 6, the connector 9, the slide member 3, the fixing piece 4, and the tip member 12. Although the rotating member 14 is stopped, the front shaft 2 and the gripping member 1 gripped by the hand with respect to the slide member 3 move forward, and the sliding member 17 in which the protrusion 17G comes into contact with the key 2B of the front shaft 2. Also, the front spring 18 is advanced together with the front shaft 2 while being compressed. Then, the front cam 17A of the sliding member 17 contacts the front cam 14A of the rotating member 14, and the inclined surface 17C of the front cam 17A of the sliding member 17 contacts the inclined surface 14C of the front cam 14A of the rotating member 14. However, since the projecting portion 17G is inserted into the key groove 12A of the tip member 12 and the sliding member 17 cannot rotate, the inclined surface 14C of the front cam 14A of the rotating member 14 is the front cam of the sliding member 17. By sliding substantially half of the inclined surface 17C of 17A, the rotating member 14 rotates to the right with respect to the front as shown in FIG. When the lead holder 16 attached to the rotary member 14 together with the rotary member 14 rotates to the right, the lead 15 also rotates to the right. At this time, the chuck 5 holding the lead 15 also rotates to the right with respect to the slide member 3 together with the fastener 6 and the connector 9.

次に、筆記を止め芯１５を紙面より離すと、手で把持された前軸２及び把持部材１に対して、前スプリング１８により前方に付勢された先部材１２及びスライド部材３が前進する。すると、スライド部材３とともに、連結具９、締具６、チャック５、回転部材１４、芯ホルダー１６が芯１５とともに前進する。そして、回転部材１４の後カム１４Ｂの傾斜面１４Ｅが摺動部材１７の後カム１７Ｂの傾斜面１７Ｅに当接し、回転部材１４の後カム１４Ｂの傾斜面１４Ｅが摺動部材１７の後カム１７Ｂの傾斜面１７Ｅの略半分を滑って図７に示したように回転部材１４が前方に対して右回転する。また、固定駒４の外段４Ａが前軸２の内鍔２Ａに当接し、図１及び図２の状態に復帰する。すると、回転部材１４の後カム１４Ｂの傾斜面１４Ｅは摺動部材１７の後カム１７Ｂの傾斜面１７Ｅを１つ乗り越えて右隣りの傾斜面１７Ｅに当接され、図７に示したように芯１５は回転部材１４の後カム１４Ｂの１つの傾斜面１４Ｅ寸法だけ右に回転する。また、筆記中の芯１５が短くなってチャック５で保持できない場合でも、短くなった芯１５をチャック５に保持された芯１５で押し出せば続けて筆記を行うことができ、短くなった芯１５は回転する。ただし、この場合はチャック５は回転せず、チャック５に保持されている芯１５は回転しない。尚、チャック５、コネクター７及び芯タンク８と押圧部材２４が分離されているとともに、固定駒４と重量体１９の隙間より重量体１９と芯タンク８の隙間が大きく構成されているので、芯タンク８の回転を押圧部材２４や重量体１９によって妨げられる恐れはない。   Next, when writing is stopped and the core 15 is separated from the paper surface, the front member 12 and the slide member 3 urged forward by the front spring 18 are moved forward with respect to the front shaft 2 and the gripping member 1 gripped by hand. . Then, together with the slide member 3, the connector 9, the fastener 6, the chuck 5, the rotating member 14, and the lead holder 16 advance together with the lead 15. Then, the inclined surface 14E of the rear cam 14B of the rotating member 14 contacts the inclined surface 17E of the rear cam 17B of the sliding member 17, and the inclined surface 14E of the rear cam 14B of the rotating member 14 is the rear cam 17B of the sliding member 17. As shown in FIG. 7, the rotating member 14 rotates to the right with respect to the front side by sliding substantially half of the inclined surface 17E. Further, the outer stage 4A of the fixed piece 4 comes into contact with the inner flange 2A of the front shaft 2 and returns to the state shown in FIGS. As a result, the inclined surface 14E of the rear cam 14B of the rotating member 14 passes over the inclined surface 17E of the rear cam 17B of the sliding member 17 and comes into contact with the inclined surface 17E on the right side as shown in FIG. 15 rotates to the right by one inclined surface 14E dimension of the rear cam 14B of the rotating member 14. Further, even when the lead 15 being written becomes short and cannot be held by the chuck 5, if the shortened lead 15 is pushed out by the lead 15 held by the chuck 5, writing can be continued, and the shortened lead 15 15 rotates. However, in this case, the chuck 5 does not rotate, and the core 15 held by the chuck 5 does not rotate. Since the chuck 5, the connector 7 and the lead tank 8 are separated from the pressing member 24, and the gap between the weight body 19 and the lead tank 8 is larger than the gap between the fixed piece 4 and the weight body 19, the lead There is no fear that the rotation of the tank 8 is hindered by the pressing member 24 or the weight body 19.

筆記を行うことによって芯１５が摩耗した場合には、手で把持した把持部材１を振ると、重量体１９が先ず後方に移動して後Ｏリング２３に当接する。その反動で把持部材１を前方に振ると、重量体１９は前方に移動して前Ｏリング１１に当接する。この重量体１９の慣性力によりチャック５、コネクター７、芯タンク８を前進させ、従来公知の振出式シャープペンシルと同様に一定量芯１５を繰り出す。   When the core 15 is worn by writing, when the gripping member 1 gripped by hand is shaken, the weight body 19 first moves rearward and contacts the rear O-ring 23. When the gripping member 1 is shaken forward by the reaction, the weight body 19 moves forward and contacts the front O-ring 11. The chuck 5, the connector 7 and the lead tank 8 are moved forward by the inertial force of the weight body 19, and a fixed amount of lead 15 is fed out in the same manner as a conventionally known swing-out mechanical pencil.

この実施例１のシャープペンシルの場合には、回転部材１４を回転させる機構が先部材１２の中に内蔵されているので、連結具９の後方は通常の振出式シャープペンシルと同様の構造となり、容易に振出式のシャープペンシルを構成できる利点がある。また、先部材１２に回転部材１４を回転させる機構が内蔵されるので、回転機構及び機構部の組立を容易に行える利点がある。更に、芯１５をガイドする芯ガイドパイプ１３も芯１５とともに回転するので、芯１５と芯ガイドパイプ１３との間で摩擦力が発生するおそれは全くない。   In the case of the mechanical pencil of the first embodiment, since the mechanism for rotating the rotating member 14 is built in the tip member 12, the rear of the connector 9 has a structure similar to that of a normal swing-out mechanical pencil, There is an advantage that a swing-out mechanical pencil can be configured easily. Further, since the mechanism for rotating the rotating member 14 is built in the tip member 12, there is an advantage that the rotating mechanism and the mechanism portion can be easily assembled. Furthermore, since the core guide pipe 13 that guides the core 15 also rotates together with the core 15, there is no possibility that a frictional force is generated between the core 15 and the core guide pipe 13.

以下、図８及び図９に基づいて本発明における実施例２のシャープペンシルを説明する。尚、図１と同一部材は同一の符号を付してその説明を省略する。先ず、図８において、軟質材で構成された把持部材１を前軸１０２に固定して取り付ける。また、固定駒１０４の後部に雄ネジ部１０４Ｂを形成する。前記前軸１０２に前方よりスライド部材３を挿入するとともに後方より固定駒１０４を挿入し、スライド部材３と固定駒１０４を圧入固着する。このスライド部材３の後端と固定駒１０４の外段１０４Ａとの間に前軸１０２の内鍔１０２Ａを位置させ、前記前軸１０２の内鍔１０２Ａはスライド部材３の後端と固定駒１０４の外段１０４Ａの間を適宜前後動可能に構成する。また、スライド部材３のキー溝３Ａに前軸１０２のキー１０２Ｂが係合し、スライド部材３と前軸１０２は長手方向には適宜移動可能でかつ回動不能に構成される。更に、前軸１０２のキー１０２Ｂの一部はスライド部材３の貫通したキー溝３Ａより内方に突出して構成される。前記固定駒１０４の後方から円筒状の重量体１９を挿入し、重量体１９を芯タンク８の外面と固定駒１０４の内面の間に長手方向に摺動可能に遊嵌する。尚、芯タンク８の外面と重量体１９の内面との隙間より重量体１９の外面と固定駒１０４の内面との隙間を狭く構成する。更に、前記固定駒１０４の雄ネジ部１０４Ｂに後軸２０を着脱可能に螺合して振出式のシャープペンシルを構成する。   Hereinafter, based on FIG.8 and FIG.9, the mechanical pencil of Example 2 in this invention is demonstrated. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, in FIG. 8, the gripping member 1 made of a soft material is fixedly attached to the front shaft 102. Further, a male screw portion 104B is formed at the rear portion of the fixed piece 104. The slide member 3 is inserted into the front shaft 102 from the front and the fixed piece 104 is inserted from the rear, and the slide member 3 and the fixed piece 104 are press-fitted and fixed. An inner flange 102A of the front shaft 102 is positioned between the rear end of the slide member 3 and the outer stage 104A of the fixed piece 104, and the inner flange 102A of the front shaft 102 is located between the rear end of the slide member 3 and the fixed piece 104. The outer stage 104A is configured to be movable back and forth as appropriate. Further, the key 102B of the front shaft 102 is engaged with the key groove 3A of the slide member 3, so that the slide member 3 and the front shaft 102 can be appropriately moved in the longitudinal direction and cannot be rotated. Further, a part of the key 102 </ b> B of the front shaft 102 is configured to protrude inward from the key groove 3 </ b> A through which the slide member 3 passes. A cylindrical weight body 19 is inserted from the rear of the fixed piece 104, and the weight body 19 is loosely fitted between the outer surface of the core tank 8 and the inner surface of the fixed piece 104 so as to be slidable in the longitudinal direction. Note that the gap between the outer surface of the weight body 19 and the inner surface of the fixed piece 104 is narrower than the gap between the outer surface of the core tank 8 and the inner surface of the weight body 19. Further, the rear shaft 20 is detachably screwed to the male screw portion 104B of the fixed piece 104 to constitute a swing-out type mechanical pencil.

前記シャープペンシルで筆記を行うと、芯１５が紙面に押圧され図９に示したように、筆圧を受けるチャック５、締具６、連結具９、スライド部材３、固定駒１０４、後軸２０、先部材１２及び回転部材１４は停止しているが、スライド部材３に対し手で把持された前軸１０２及び把持部材１は前進し、前軸１０２のキー１０２Ｂに突部１７Ｇが当接した摺動部材１７も前軸１０２とともに前スプリング１８を圧縮しながら前進する。すると、カム部材としての摺動部材１７の前カム１７Ａが回転部材１４の前カム１４Ａに当接し、摺動部材１７の前カム１７Ａの傾斜面１７Ｃが回転部材１４の前カム１４Ａの傾斜面１４Ｃに当接する。しかし、摺動部材１７は突部１７Ｇが先部材１２のキー溝１２Ａに挿入されて回動不能となっているので、回転部材１４の前カム１４Ａの傾斜面１４Ｃが摺動部材１７の前カム１７Ａの傾斜面１７Ｃの略半分を滑って、回転部材１４が前方に対して右回転する。回転部材１４とともに、回転部材１４に取り付けられた芯ホルダー１６が右回転すると芯１５も右に回転する。この時、芯１５を保持するチャック５も、締具６及び連結具９とともにスライド部材３に対して右に回転する。   When writing with the mechanical pencil, the core 15 is pressed against the paper surface, and as shown in FIG. 9, the chuck 5 receiving the writing pressure, the fastener 6, the connector 9, the slide member 3, the fixed piece 104, the rear shaft 20. The front member 12 and the rotating member 14 are stopped, but the front shaft 102 and the gripping member 1 gripped by hand with respect to the slide member 3 move forward, and the protrusion 17G comes into contact with the key 102B of the front shaft 102. The sliding member 17 also moves forward together with the front shaft 102 while compressing the front spring 18. Then, the front cam 17A of the sliding member 17 as a cam member contacts the front cam 14A of the rotating member 14, and the inclined surface 17C of the front cam 17A of the sliding member 17 is the inclined surface 14C of the front cam 14A of the rotating member 14. Abut. However, since the projecting portion 17G is inserted into the key groove 12A of the tip member 12 and the sliding member 17 cannot rotate, the inclined surface 14C of the front cam 14A of the rotating member 14 is the front cam of the sliding member 17. The rotary member 14 rotates to the right with respect to the front by slipping about half of the inclined surface 17C of 17A. When the lead holder 16 attached to the rotating member 14 rotates to the right together with the rotating member 14, the lead 15 also rotates to the right. At this time, the chuck 5 holding the lead 15 also rotates to the right with respect to the slide member 3 together with the fastener 6 and the connector 9.

次に、筆記を止め芯１５を紙面より離すと、手で把持された前軸１０２及び把持部材１に対して、前スプリング１８により前方に付勢された先部材１２、スライド部材３、固定駒４及び後軸２０が前進する。すると、スライド部材３とともに、連結具９、締具６、チャック５、回転部材１４、芯ホルダー１６が芯１５とともに前進する。そして、回転部材１４の後カム１４Ｂの傾斜面１４Ｅが摺動部材１７の後カム１７Ｂの傾斜面１７Ｅに当接し、回転部材１４の後カム１４Ｂの傾斜面１４Ｅが摺動部材１７の後カム１７Ｂの傾斜面１７Ｅの略半分を滑って回転部材１４が前方に対して右回転する。また、固定駒１０４の外段１０４Ａが前軸１０２の内鍔１０２Ａに当接し、図８の状態に復帰する。すると、回転部材１４の後カム１４Ｂの傾斜面１４Ｅは摺動部材１７の後カム１７Ｂの傾斜面１７Ｅを１つ乗り越えて右隣りの傾斜面１７Ｅに当接され、芯１５は回転部材１４の後カム１４Ｂの１つの傾斜面１４Ｅ寸法だけ右に回転する。尚、芯１５を繰り出す操作は実施例１と同様に行われる。   Next, when writing is stopped and the lead core 15 is separated from the paper surface, the front member 102, the slide member 3, and the fixed piece urged forward by the front spring 18 with respect to the front shaft 102 and the gripping member 1 gripped by hand. 4 and the rear axle 20 move forward. Then, together with the slide member 3, the connector 9, the fastener 6, the chuck 5, the rotating member 14, and the lead holder 16 advance together with the lead 15. Then, the inclined surface 14E of the rear cam 14B of the rotating member 14 contacts the inclined surface 17E of the rear cam 17B of the sliding member 17, and the inclined surface 14E of the rear cam 14B of the rotating member 14 is the rear cam 17B of the sliding member 17. The rotating member 14 rotates to the right with respect to the front by sliding along substantially half of the inclined surface 17E. Further, the outer stage 104A of the fixed piece 104 comes into contact with the inner collar 102A of the front shaft 102 and returns to the state shown in FIG. Then, the inclined surface 14E of the rear cam 14B of the rotating member 14 passes over the inclined surface 17E of the rear cam 17B of the sliding member 17 and comes into contact with the inclined surface 17E adjacent to the right, and the core 15 is connected to the rear surface of the rotating member 14. The cam 14B rotates to the right by the dimension of one inclined surface 14E. Note that the operation of unwinding the lead 15 is performed in the same manner as in the first embodiment.

この実施例２のシャープペンシルの場合には、芯１５に筆圧を加えると、手で把持した把持部材１及び前軸１０２に対して先部材１２、スライド部材３及び後軸２０が一体で後退する為、先部材内を芯が後退するものと比べて芯が後退するという感覚が薄れ、筆記し易くなるものである。   In the case of the mechanical pencil of Example 2, when the pen pressure is applied to the core 15, the front member 12, the slide member 3, and the rear shaft 20 are integrally retracted with respect to the gripping member 1 and the front shaft 102 gripped by hand. Therefore, the feeling that the lead is retracted is less than that in which the lead is retracted in the tip member, and writing becomes easier.

以下、図１０に基づいて本発明における実施例３のシャープペンシルを説明する。尚、図１と同一部材は同一の符号を付してその説明を省略する。先ず、前軸２に前方よりスライド部材３を挿入するとともに後方より固定駒２０４を挿入し、スライド部材３と固定駒２０４を圧入固着する。このスライド部材３の後端と固定駒２０４の外段２０４Ａとの間に前軸２の内鍔２Ａを位置させ、前記前軸２の内鍔２Ａはスライド部材３の後端と固定駒２０４の外段２０４Ａとの間を適宜前後動可能に構成する。   Hereinafter, the mechanical pencil according to the third embodiment of the present invention will be described with reference to FIG. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the slide member 3 is inserted into the front shaft 2 from the front and the fixed piece 204 is inserted from the rear, and the slide member 3 and the fixed piece 204 are press-fitted and fixed. An inner flange 2A of the front shaft 2 is positioned between the rear end of the slide member 3 and the outer stage 204A of the fixed piece 204. The inner flange 2A of the front shaft 2 is positioned between the rear end of the slide member 3 and the fixed piece 204. It is configured to be able to move back and forth as appropriate between the outer stage 204A.

シャープペンシルの機構部は、頭部が数分割されたチャック１０５と、チャック１０５の頭部に外嵌される締具６と、チャック１０５の後部に固着されるパイプ状の芯タンク１０８と、締具６を受け止める連結具９と、連結具９と芯タンク１０８の間に取付時荷重が５００ｇ程度で取り付けられるチャックスプリング１０とにより構成される。   The mechanical part of the mechanical pencil includes a chuck 105 whose head is divided into several parts, a fastener 6 fitted to the head of the chuck 105, a pipe-shaped core tank 108 fixed to the rear part of the chuck 105, and a clamp. The connector 9 is configured to receive the tool 6, and the chuck spring 10 is mounted between the connector 9 and the core tank 108 with a load of about 500g.

筆圧により芯１５が回転する操作は実施例１と同様に行われる。尚、チャック１０５及び芯タンク１０８が回転する時、芯タンク１０８と押圧部材２４が分離されているので、芯タンク１０８の回転を押圧部材２４によって妨げられる恐れはない。   The operation of rotating the core 15 by the writing pressure is performed in the same manner as in the first embodiment. When the chuck 105 and the lead tank 108 rotate, the lead tank 108 and the pressing member 24 are separated from each other, so that the rotation of the lead tank 108 is not hindered by the pressing member 24.

筆記を行うことによって芯１５が摩耗した場合には、ノブ２７を押圧することにより押圧部材２４を前進させ、押圧部材２４が芯タンク１０８の後端に当接して芯タンク１０８及びチャック１０５を前進させれば、従来公知のノック式シャープペンシルと同様に一定量芯１５を繰り出す。   When the lead 15 is worn by writing, the pressing member 24 is advanced by pressing the knob 27, and the pressing member 24 abuts the rear end of the lead tank 108 to advance the lead tank 108 and the chuck 105. Then, the fixed lead 15 is fed out in the same manner as a conventionally known knock mechanical pencil.

以下、図１１、図１２、図１３及び図１４に基づいて本発明における実施例４のシャープペンシルを説明する。尚、図２と同一部材は同一の符号を付してその説明を省略する。先ず、図１１において、前部に芯ガイドパイプ１３を固定した回転部材１１４を先部材１２に回動可能に内蔵する。この回転部材１１４に芯１５を５０ｇ程度の摩擦力で保持するゴム製の芯ホルダー１６を取り付ける。   Hereinafter, a mechanical pencil according to a fourth embodiment of the present invention will be described with reference to FIGS. 11, 12, 13, and 14. The same members as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted. First, in FIG. 11, a rotating member 114 having a lead guide pipe 13 fixed to the front portion is rotatably incorporated in the tip member 12. A rubber core holder 16 that holds the core 15 with a frictional force of about 50 g is attached to the rotating member 114.

次に、前記回転部材１１４を回転させるための回転機構を説明する。回転部材１１４に突部１１４Ｇを形成し、この突部１１４Ｇの前面に前カム１１４Ａを形成するとともに、突部１１４Ｇの後面に後カム１１４Ｂを形成する。この回転部材１１４の前カム１１４Ａは、図１２に示したように、右回転方向に向かって前方に傾斜する多数の傾斜面１１４Ｃと、傾斜面１１４Ｃと傾斜面１１４Ｃの間に位置する垂直面１１４Ｄにより構成する。回転部材１１４の後カム１１４Ｂは、右回転方向に向かって後方に傾斜する多数の傾斜面１１４Ｅと、傾斜面１１４Ｅと傾斜面１１４Ｅの間に位置する垂直面１１４Ｆにより構成する。また、カム部材としての摺動部材１１７に、前内鍔１１７Ｉの後面に形成した前カム１１７Ａと後内鍔１１７Ｊの前面に形成した後カム１１７Ｂを構成する。この摺動部材１１７の前カム１１７Ａは、左回転方向に向かって後方に傾斜する多数の傾斜面１１７Ｃと、傾斜面１１７Ｃと傾斜面１１７Ｃの間に位置する垂直面１１７Ｄにより構成する。また、摺動部材１１７の後カム１１７Ｂは、左回転方向に向かって前方に傾斜する多数の傾斜面１１７Ｅと、傾斜面１１７Ｅと傾斜面１１７Ｅの間に位置する垂直面１１７Ｆにより構成する。更に、摺動部材１１７の前カム１１７Ａの傾斜面１１７Ｃと後カム１１７Ｂの傾斜面１１７Ｅは同数で前カム１１７Ａの傾斜面１１７Ｃの略中心に後カム１１７Ｂの垂直面１１７Ｆが位置する。また、回転部材１１４の前カム１１４Ａの傾斜面１１４Ｃと後カム１１４Ｂの傾斜面１１４Ｅも摺動部材１１７の前カム１１７Ａの傾斜面１１７Ｃ及び後カム１１７Ｂの傾斜面１１７Ｅと同数で、前カム１１４Ａの垂直面１１４Ｄと後カム１１４Ｂの垂直面１１４Ｆが長手方向に合わされている。前記摺動部材１１７の前カム１１７Ａと後カム１１７Ｂの間に回転部材１１４の突部１１４Ｇを取り付け、回転部材１１４の前カム１１４Ａと摺動部材１１７の前カム１１７Ａを対面させるとともに、回転部材１１４の後カム１１４Ｂと摺動部材１１７の後カム１１７Ｂを対面させて構成する。また、回転部材１１４に対し摺動部材１１７は長手方向に適宜前後動可能に構成し、回転部材１１４の前カム１１４Ａと摺動部材１１７の前カム１１７Ａ及び回転部材１１４の後カム１１４Ｂと摺動部材１１７の後カム１１７Ｂは当接可能に構成する。 Next, a rotating mechanism for rotating the rotating member 114 will be described. A protrusion 114G is formed on the rotating member 114, a front cam 114A is formed on the front surface of the protrusion 114G, and a rear cam 114B is formed on the rear surface of the protrusion 114G. As shown in FIG. 12, the front cam 114A of the rotating member 114 includes a large number of inclined surfaces 114C inclined forward in the clockwise direction, and a vertical surface 114D positioned between the inclined surfaces 114C and 114C. It consists of. The rear cam 114B of the rotating member 114 includes a large number of inclined surfaces 114E that are inclined rearward in the right rotation direction, and a vertical surface 114F that is positioned between the inclined surfaces 114E and 114E. The sliding member 117 as a cam member includes a front cam 117A formed on the rear surface of the front inner flange 117I and a rear cam 117B formed on the front surface of the rear inner flange 117J. The front cam 117A of the sliding member 117 includes a large number of inclined surfaces 117C that are inclined backward in the left rotation direction, and a vertical surface 117D that is located between the inclined surfaces 117C and 117C. In addition, the rear cam 117B of the sliding member 117 is configured by a large number of inclined surfaces 117E that are inclined forward in the counterclockwise direction, and a vertical surface 117F that is positioned between the inclined surfaces 117E and 117E. Further, the inclined surface 117C of the front cam 117A of the sliding member 117 and the inclined surface 117E of the rear cam 117B are the same number, and the vertical surface 117F of the rear cam 117B is located at the approximate center of the inclined surface 117C of the front cam 117A. Further, the inclined surface 114C of the front cam 114A of the rotating member 114 and the inclined surface 114E of the rear cam 114B are the same in number as the inclined surface 117C of the front cam 117A and the inclined surface 117E of the rear cam 117B of the sliding member 117, and the front cam 114A. The vertical surface 114D and the vertical surface 114F of the rear cam 114B are aligned in the longitudinal direction. A protrusion 114G of the rotating member 114 is attached between the front cam 117A and the rear cam 117B of the sliding member 117 so that the front cam 114A of the rotating member 114 and the front cam 117A of the sliding member 117 face each other. The rear cam 114B and the rear cam 117B of the sliding member 117 are configured to face each other. Further, the sliding member 117 is configured to be able to move back and forth appropriately in the longitudinal direction with respect to the rotating member 114, and slides with the front cam 114A of the rotating member 114, the front cam 117A of the sliding member 117, and the rear cam 114B of the rotating member 114. The rear cam 117B of the member 117 is configured to be able to abut.

この回転部材１１４及び摺動部材１１７は先部材１２に内蔵されるが、先部材１２のキー溝１２Ａに摺動部材１１７の相対位置に形成された突部１１７Ｇが挿入され、先部材１２に対して摺動部材１１７は長手方向に移動可能で回動不能に構成される。また、摺動部材１１７の突部１１７Ｇは先部材１２の後部表面より外方に突出する。更に、先部材１２の内段１２Ｂと摺動部材１１７の外段１１７Ｈとの間に前スプリング１８を取り付け、摺動部材１１７を長手方向後方に付勢する。   The rotating member 114 and the sliding member 117 are built in the tip member 12, but a protrusion 117 </ b> G formed at a relative position of the sliding member 117 is inserted into the key groove 12 </ b> A of the tip member 12. Thus, the sliding member 117 is configured to be movable in the longitudinal direction but not rotatable. Further, the protrusion 117G of the sliding member 117 protrudes outward from the rear surface of the tip member 12. Further, a front spring 18 is attached between the inner stage 12B of the tip member 12 and the outer stage 117H of the sliding member 117, and the sliding member 117 is urged rearward in the longitudinal direction.

上記先部材１２をスライド部材３に着脱可能に螺合し、先部材１２の係止段１２Ｃと連結具９の前端との間に回転部材１１４を回動可能に内蔵し、取付時荷重１００ｇ程度で取り付けられた前スプリング１８により長手方向後方に付勢された摺動部材１１７の前カム１１７Ａを回転部材１１４の前カム１１４Ａに当接するとともに、摺動部材１１７の突部１１７Ｇを前軸２のキー２Ｂに当接させる。すると、前軸２の内鍔２Ａが固定駒４の外段４Ａに当接され、振出式のシャープペンシルを構成する。   The tip member 12 is detachably screwed to the slide member 3, and a rotating member 114 is rotatably incorporated between the locking step 12 </ b> C of the tip member 12 and the front end of the connector 9. The front cam 117A of the sliding member 117 urged rearward in the longitudinal direction by the front spring 18 attached in step S1 is brought into contact with the front cam 114A of the rotating member 114, and the protrusion 117G of the sliding member 117 is brought into contact with the front shaft 2. It is brought into contact with the key 2B. Then, the inner flange 2A of the front shaft 2 is brought into contact with the outer stage 4A of the fixed piece 4 to constitute a swing-out mechanical pencil.

前記シャープペンシルで筆記を行うと、芯１５が紙面に押圧され図１３に示したように、筆圧を受けるチャック５、締具６、連結具９、スライド部材３、固定駒４、先部材１２及び回転部材１１４は停止しているが、スライド部材３に対し手で把持された前軸２及び把持部材１は前進し、前軸２のキー２Ｂに突部１１７Ｇが当接した摺動部材１１７も前軸２とともに前スプリング１８を圧縮しながら前進する。すると、摺動部材１１７の後カム１１７Ｂが回転部材１１４の後カム１１４Ｂに当接し、摺動部材１１７の後カム１１７Ｂの傾斜面１１７Ｅが回転部材１１４の後カム１１４Ｂの傾斜面１１４Ｅに当接する。しかし、摺動部材１１７は突部１１７Ｇが先部材１２のキー溝１２Ａに挿入されて回動不能となっているので、回転部材１１４の後カム１１４Ｂの傾斜面１１４Ｅが摺動部材１１７の後カム１１７Ｂの傾斜面１１７Ｅの略半分を滑って図１４に示したように回転部材１１４が前方に対して右回転する。この回転部材１１４とともに、回転部材１１４に取り付けられた芯ホルダー１６が右回転すると芯１５も右に回転する。この時、芯１５を保持するチャック５も、締具６及び連結具９とともにスライド部材３に対して右に回転する。   When writing with the mechanical pencil, the core 15 is pressed against the paper surface, and as shown in FIG. 13, the chuck 5 receiving the writing pressure, the fastener 6, the connecting tool 9, the slide member 3, the fixing piece 4, and the tip member 12. The rotating member 114 is stopped, but the front shaft 2 and the gripping member 1 gripped by hand with respect to the slide member 3 move forward, and the sliding member 117 in which the protrusion 117G is in contact with the key 2B of the front shaft 2. Also, the front spring 18 is advanced together with the front shaft 2 while being compressed. Then, the rear cam 117B of the sliding member 117 contacts the rear cam 114B of the rotating member 114, and the inclined surface 117E of the rear cam 117B of the sliding member 117 contacts the inclined surface 114E of the rear cam 114B of the rotating member 114. However, since the projecting portion 117G is inserted into the key groove 12A of the front member 12 and the sliding member 117 is not rotatable, the inclined surface 114E of the rear cam 114B of the rotating member 114 is the rear cam of the sliding member 117. As shown in FIG. 14, the rotating member 114 rotates to the right with respect to the front side by sliding substantially half of the inclined surface 117E of 117B. When the lead holder 16 attached to the rotating member 114 is rotated to the right together with the rotating member 114, the lead 15 is also rotated to the right. At this time, the chuck 5 holding the lead 15 also rotates to the right with respect to the slide member 3 together with the fastener 6 and the connector 9.

次に、筆記を止め芯１５を紙面より離すと、手で把持された前軸２及び把持部材１に対して、前スプリング１８により前方に付勢された先部材１２及びスライド部材３が前進する。すると、スライド部材３とともに、連結具９、締具６、チャック５、回転部材１１４、芯ホルダー１６が芯１５とともに前進する。そして、回転部材１１４に形成された前カム１１４Ａの傾斜面１１４Ｃが摺動部材１１７に形成された前カム１１７Ａの傾斜面１１７Ｃに当接し、回転部材１１４の前カム１１４Ａの傾斜面１１４Ｃが摺動部材１１７の前カム１１７Ａの傾斜面１１７Ｃの略半分を滑って回転部材１１４が前方に対して右回転する。また、固定駒４の外段４Ａが前軸２の内鍔２Ａに当接し、図１１の状態に復帰する。すると、回転部材１１４の前カム１１４Ａの傾斜面１１４Ｃは摺動部材１１７の前カム１１７Ａの傾斜面１１７Ｃを１つ乗り越えて右隣りの傾斜面１１７Ｃに当接され、芯１５は回転部材１１４の後カム１１４Ｂの１つの傾斜面１１４Ｅ寸法だけ右に回転する。尚、チャック５、コネクター７及び芯タンク８が回転する時、芯タンク８と押圧部材２４が分離されているとともに、固定駒４と重量体１９の隙間より重量体１９と芯タンク８の隙間が大きく構成されているので、芯タンク８の回転を押圧部材２４や重量体１９によって妨げられる恐れはない。   Next, when writing is stopped and the core 15 is separated from the paper surface, the front member 12 and the slide member 3 urged forward by the front spring 18 are moved forward with respect to the front shaft 2 and the gripping member 1 gripped by hand. . Then, together with the slide member 3, the connector 9, the fastener 6, the chuck 5, the rotating member 114, and the lead holder 16 advance together with the lead 15. The inclined surface 114C of the front cam 114A formed on the rotating member 114 abuts on the inclined surface 117C of the front cam 117A formed on the sliding member 117, and the inclined surface 114C of the front cam 114A of the rotating member 114 slides. The rotating member 114 rotates clockwise with respect to the front by sliding along substantially half of the inclined surface 117C of the front cam 117A of the member 117. Further, the outer stage 4A of the fixed piece 4 comes into contact with the inner flange 2A of the front shaft 2 and returns to the state shown in FIG. Then, the inclined surface 114C of the front cam 114A of the rotating member 114 passes over the inclined surface 117C of the front cam 117A of the sliding member 117 and comes into contact with the inclined surface 117C on the right side, and the core 15 is located behind the rotating member 114. The cam 114B rotates to the right by the dimension of one inclined surface 114E. When the chuck 5, the connector 7 and the lead tank 8 are rotated, the lead tank 8 and the pressing member 24 are separated, and the gap between the weight body 19 and the lead tank 8 is larger than the gap between the fixed piece 4 and the weight body 19. Since it is configured to be large, there is no possibility that the rotation of the lead tank 8 is hindered by the pressing member 24 and the weight body 19.

この実施例４のシャープペンシルの場合も、回転部材１１４を回転させる機構が先部材１２の中に内蔵されているので、連結具９から後方は通常の振出式のシャープペンシルと同様の構造となり、容易に振出式のシャープペンシルを構成できる利点がある。また、先部材１２に回転部材１１４を回転させる機構が内蔵されるので、回転機構及び機構部の組立を容易に行える利点が得られる。   Also in the case of the mechanical pencil of Example 4, since the mechanism for rotating the rotating member 114 is built in the tip member 12, the rear side from the connector 9 has a structure similar to that of a normal swing-out mechanical pencil, There is an advantage that a swing-out mechanical pencil can be configured easily. Further, since the tip member 12 incorporates a mechanism for rotating the rotating member 114, there is an advantage that the rotating mechanism and the mechanism portion can be easily assembled.

以下、図１５及び図１６に基づいて本発明における実施例５のシャープペンシルを説明する。尚、図２と同一部材は同一の符号を付してその説明を省略する。先ず、図１５において、回転部材２１４に芯１５を５０ｇ程度の摩擦力で保持するゴム等の芯ホルダー１６を取り付ける。   Hereinafter, the mechanical pencil according to the fifth embodiment of the present invention will be described with reference to FIGS. 15 and 16. The same members as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted. First, in FIG. 15, a core holder 16 made of rubber or the like that holds the core 15 with a frictional force of about 50 g is attached to the rotating member 214.

次に、前記回転部材２１４を回転させるための回転機構を説明する。回転部材２１４に突部２１４Ｇを形成し、この突部２１４Ｇの前面に前カム２１４Ａを形成するとともに、突部２１４Ｇの後面に後カム２１４Ｂを形成する。この回転部材２１４の前カム２１４Ａは、右回転方向に向かって前方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。また、回転部材２１４の後カム２１４Ｂは、右回転方向に向かって後方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。先部材１１２には前カム１１２Ｄが形成され、この前カム１１２Ｄは左回転方向に向かって後方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。更に、内駒２８の内側部前面に後カム２８Ａを構成する。この内駒２８の後カム２８Ａは、左回転方向に向かって前方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。更に、回転部材２１４の前カム２１４Ａの傾斜面と後カム２１４Ｂの傾斜面は同数で前カム２１４Ａの傾斜面の略中心に後カム２１４Ｂの垂直面が位置する。また、先部材１１２の前カム１１２Ｄの傾斜面と内駒２８の後カム２８Ａの傾斜面も回転部材２１４の前カム２１４Ａの傾斜面及び後カム２１４Ｂの傾斜面と同数に構成する。前記回転部材２１４を先部材１１２内に長手方向に摺動可能でかつ回動可能に内蔵する。更に、先部材１１２の位置決め溝１１２Ｅに内駒２８の位置決め突起２８Ｂを挿入して位置決めし、先部材１１２に内駒２８を圧入固着する。この先部材１１２と内駒２８によりカム部材を構成する。すると、先部材１１２に形成された前カム１１２Ｄの傾斜面の略中心に内駒２８に形成した後カム２８Ａの垂直面が位置して構成される。そして、先部材１１２の前カム１１２Ｄと回転部材２１４の前カム２１４Ａを対面させて構成するとともに、回転部材２１４の後カム２１４Ｂと内駒２８の後カム２８Ａを対面させて構成する。 Next, a rotating mechanism for rotating the rotating member 214 will be described. A protrusion 214G is formed on the rotating member 214, a front cam 214A is formed on the front surface of the protrusion 214G, and a rear cam 214B is formed on the rear surface of the protrusion 214G. The front cam 214A of the rotating member 214 includes a large number of inclined surfaces that are inclined forward in the right rotation direction, and a vertical surface that is positioned between the inclined surfaces. Further, the rear cam 214B of the rotating member 214 includes a large number of inclined surfaces that are inclined rearward in the right rotation direction, and a vertical surface that is positioned between the inclined surfaces. The front member 112 is formed with a front cam 112D, and the front cam 112D is composed of a large number of inclined surfaces that are inclined rearward in the counterclockwise direction and a vertical surface that is located between the inclined surfaces. Further, a rear cam 28 </ b> A is formed on the inner front surface of the inner piece 28. The rear cam 28A of the inner piece 28 includes a large number of inclined surfaces that are inclined forward in the counterclockwise direction and a vertical surface that is positioned between the inclined surfaces. Further, the inclined surface of the front cam 214A of the rotating member 214 and the inclined surface of the rear cam 214B are the same in number, and the vertical surface of the rear cam 214B is positioned substantially at the center of the inclined surface of the front cam 214A. Further, the inclined surface of the front cam 112D of the front member 112 and the inclined surface of the rear cam 28A of the inner piece 28 are configured in the same number as the inclined surface of the front cam 214A of the rotating member 214 and the inclined surface of the rear cam 214B. The rotating member 214 is incorporated in the tip member 112 so as to be slidable and rotatable in the longitudinal direction. Further, the positioning projection 28B of the inner piece 28 is inserted into the positioning groove 112E of the tip member 112 for positioning, and the inner piece 28 is press-fitted and fixed to the tip member 112. The tip member 112 and the inner piece 28 constitute a cam member. Then, the vertical surface of the rear cam 28A formed on the inner piece 28 is positioned approximately at the center of the inclined surface of the front cam 112D formed on the front member 112. The front cam 112D of the front member 112 and the front cam 214A of the rotating member 214 are configured to face each other, and the rear cam 214B of the rotating member 214 and the rear cam 28A of the inner piece 28 are configured to face each other.

また、回転部材２１４の突部２１４Ｇは先部材１１２の前カム１１２Ｄと内駒２８の後カム２８Ａの間を長手方向に適宜前後動可能に構成し、先部材１１２の前カム１１２Ｄと回転部材２１４の前カム２１４Ａ及び回転部材２１４の後カム２１４Ｂと内駒２８の後カム２８Ａは当接可能に構成する。更に、先部材１１２の内段１１２Ｂと回転部材２１４の外段２１４Ｈとの間に取付時荷重１００ｇ程度で前スプリング１１８を取り付け、回転部材２１４を長手方向後方に付勢して回転部材２１４の後カム２１４Ｂを内駒２８の後カム２８Ａに当接させる。   Further, the protrusion 214G of the rotating member 214 is configured to be able to move back and forth appropriately between the front cam 112D of the front member 112 and the rear cam 28A of the inner piece 28 in the longitudinal direction, and the front cam 112D of the front member 112 and the rotating member 214 The front cam 214A, the rear cam 214B of the rotating member 214, and the rear cam 28A of the inner piece 28 are configured to be able to contact each other. Further, a front spring 118 is attached between the inner stage 112B of the tip member 112 and the outer stage 214H of the rotating member 214 with a load of about 100 g, and the rotating member 214 is urged rearward in the longitudinal direction to The cam 214B is brought into contact with the rear cam 28A of the inner piece 28.

上記先部材１１２に後端から切り欠かれて伸びたキー溝１１２Ａを相対位置に形成し、このキー溝１１２Ａに摺動部材２１７の相対位置に形成された突部２１７Ｇを挿入して、先部材１１２に対して摺動部材２１７を長手方向に移動可能で回動不能に構成する。また、摺動部材２１７の突部２１７Ｇは先部材１１２の後部表面より外方に突出する。   A key groove 112A that is notched and extended from the rear end of the tip member 112 is formed at a relative position, and a protrusion 217G that is formed at a relative position of the sliding member 217 is inserted into the key groove 112A. The sliding member 217 is configured to be movable in the longitudinal direction but not rotatable with respect to 112. Further, the protrusion 217G of the sliding member 217 protrudes outward from the rear surface of the tip member 112.

前記先部材１１２をスライド部材３に着脱可能に螺合し、摺動部材２１７の突部２１７Ｇを前軸２のキー２Ｂに当接させるとともに、摺動部材２１７の前端に回転部材２１４の後端を当接可能に構成し、振出式のシャープペンシルを構成する。   The tip member 112 is detachably screwed to the slide member 3 so that the protrusion 217G of the sliding member 217 is brought into contact with the key 2B of the front shaft 2, and the rear end of the rotating member 214 is connected to the front end of the sliding member 217. Is configured to be able to come into contact with each other to form a swing-out mechanical pencil.

前記シャープペンシルで筆記を行うと、芯１５が紙面に押されて図１６に示したように、筆圧を受けるチャック５、締具６、連結具９、スライド部材３、先部材１１２及び内駒２８は停止しているが、スライド部材３に対し手で把持された前軸２及び把持部材１は前進し、前軸２のキー２Ｂに突部２１７Ｇが当接した摺動部材２１７も前軸２とともに前スプリング１１８を圧縮しながら前進する。すると、摺動部材２１７の前端に回転部材２１４の後端が当接し、摺動部材２１７に押されて回転部材２１４も前進する。そして、回転部材２１４の前カム２１４Ａの傾斜面が先部材１１２の前カム１１２Ｄの傾斜面に当接すると、回転部材２１４の前カム２１４Ａの傾斜面が先部材１１２の前カム１１２Ｄの傾斜面の略半分を滑って回転部材２１４が前方に対して右回転する。この回転部材２１４とともに、回転部材２１４に取り付けられた芯ホルダー１６が右回転すると芯１５も右に回転する。この時、芯１５を保持するチャック５も、締具６及び連結具９とともにスライド部材３に対して右に回転する。   When writing with the mechanical pencil, as shown in FIG. 16, the lead 15 is pushed against the paper surface, and the chuck 5, the fastener 6, the connector 9, the slide member 3, the tip member 112, and the inner piece receiving the writing pressure. 28 is stopped, but the front shaft 2 and the gripping member 1 gripped by hand with respect to the slide member 3 move forward, and the sliding member 217 in which the protrusion 217G is in contact with the key 2B of the front shaft 2 is also the front shaft. 2 and the front spring 118 is compressed while moving forward. Then, the rear end of the rotating member 214 comes into contact with the front end of the sliding member 217 and is pushed by the sliding member 217 so that the rotating member 214 also moves forward. When the inclined surface of the front cam 214A of the rotating member 214 comes into contact with the inclined surface of the front cam 112D of the leading member 112, the inclined surface of the front cam 214A of the rotating member 214 becomes the inclined surface of the front cam 112D of the leading member 112. The rotating member 214 rotates to the right with respect to the front by slipping about half. When the lead holder 16 attached to the rotating member 214 rotates to the right together with the rotating member 214, the lead 15 also rotates to the right. At this time, the chuck 5 holding the lead 15 also rotates to the right with respect to the slide member 3 together with the fastener 6 and the connector 9.

次に、筆記を止めて芯１５を紙面より離すと、手で把持された前軸２及び把持部材１に対して、前スプリング１１８により前方に付勢された先部材１１２及びスライド部材３が前進する。すると、先部材１１２及びスライド部材３とともに、内駒２８、連結具９、締具６、チャック５及び芯１５が前進する。しかし、把持部材１及び前軸２とともに摺動部材２１７及び回転部材２１４は停止しているので、内駒２８に形成された後カム２８Ａの傾斜面が回転部材２１４に形成された後カム２１４Ｂの傾斜面に当接し、回転部材２１４の後カム２１４Ｂの傾斜面が内駒２８の後カム２８Ａの傾斜面の略半分を滑って回転部材２１４が前方に対して右回転する。また、固定駒４の外段４Ａが前軸２の内鍔２Ａに当接し、図１５の状態に復帰する。すると、回転部材２１４の後カム２１４Ｂの傾斜面は内駒２８の後カム２８Ａの傾斜面を１つ乗り越えて右隣りの傾斜面に当接され、芯１５は回転部材２１４の後カム２１４Ｂの１つの傾斜面寸法だけ右に回転する。   Next, when writing is stopped and the core 15 is separated from the paper surface, the tip member 112 and the slide member 3 urged forward by the front spring 118 are moved forward with respect to the front shaft 2 and the gripping member 1 gripped by hand. To do. Then, together with the tip member 112 and the slide member 3, the inner piece 28, the connector 9, the fastener 6, the chuck 5, and the core 15 move forward. However, since the sliding member 217 and the rotating member 214 are stopped together with the gripping member 1 and the front shaft 2, the inclined surface of the rear cam 28A formed on the inner piece 28 is formed on the rotating member 214. The rotating member 214 contacts the inclined surface, the inclined surface of the rear cam 214B of the rotating member 214 slides substantially half of the inclined surface of the rear cam 28A of the inner piece 28, and the rotating member 214 rotates rightward with respect to the front. Further, the outer stage 4A of the fixed piece 4 comes into contact with the inner collar 2A of the front shaft 2 and returns to the state shown in FIG. Then, the inclined surface of the rear cam 214B of the rotating member 214 passes over the inclined surface of the rear cam 28A of the inner piece 28 and contacts the inclined surface on the right, and the core 15 is one of the rear cam 214B of the rotating member 214. Rotate to the right by one ramp dimension.

以下、図１７及び図１８に基づいて本発明における実施例６のシャープペンシルを説明する。尚、図１５と同一部材は同一の符号を付してその説明を省略する。先ず、図１７において、回転部材３１４を回転させるための回転機構を説明する。回転部材３１４に外鍔３１４Ｉを形成し、この外鍔３１４Ｉの前面に後カム３１４Ｂを形成する。この回転部材３１４の後カム３１４Ｂは、右回転方向に向かって前方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。また、回転部材３１４の後カム３１４Ｂ前方には前カム部材２９が圧入固着される。この前カム部材２９は、前カム部材２９の凹部２９Ａに回転部材３１４の凸部３１４Ｊが係合されて位置合わせされている。この前カム部材２９の後面に前カム２９Ｂが形成され、この前カム２９Ｂは、右回転方向に向かって後方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。前記前カム部材２９の前カム２９Ｂの傾斜面と回転部材３１４の後カム３１４Ｂの傾斜面は同数で、前カム部材２９の前カム２９Ｂの傾斜面の略中心に回転部材３１４の後カム３１４Ｂの垂直面が位置する。また、内駒１２８の内側部前面に前カム１２８Ｃを形成するとともに、内側部後面に後カム１２８Ａを構成する。この内駒１２８の前カム１２８Ｃは、左回転方向に向かって前方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。更に、内駒１２８の後カム１２８Ａは、左回転方向に向かって後方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。前記内駒１２８の前カム１２８Ｃの傾斜面と後カム１２８Ａの傾斜面は同数で前カム１２８Ｃの傾斜面の略中心に後カム１２８Ａの垂直面が位置する。しかも、内駒１２８の前カム１２８Ｃの傾斜面と後カム１２８Ａの傾斜面は、前記前カム部材２９の前カム２９Ｂの傾斜面及び回転部材３１４の後カム３１４Ｂの傾斜面と同数に構成する。また、内駒１２８の内側部を前記前カム部材２９の前カム２９Ｂと回転部材３１４の後カム３１４Ｂの間に位置して構成し、前カム部材２９の前カム２９Ｂと内駒１２８の前カム１２８Ｃを対面させて構成するとともに、内駒１２８の後カム１２８Ａと回転部材３１４の後カム３１４Ｂを対面させて構成する。更に、内駒１２８の内側部は、前カム部材２９の前カム２９Ｂと回転部材３１４の後カム３１４Ｂの間を長手方向に適宜前後動可能に構成し、前カム部材２９の前カム２９Ｂと内駒１２８の前カム１２８Ｃ及び内駒１２８の後カム１２８Ａと回転部材３１４の後カム３１４Ｂは当接可能に構成する。前記内駒１２８は先部材２１２に圧入固着して取り付けられ、回転部材３１４を先部材２１２内に長手方向に適宜移動可能でかつ回動可能に内蔵する。前記内駒１２８と先部材２１２によりカム部材を構成する。また、先部材２１２の内段２１２Ｂと前カム部材２９の間に取付時荷重１００ｇ程度で前スプリング１１８を取り付け、回転部材３１４を長手方向後方に付勢して前カム部材２９の前カム２９Ｂを内駒１２８の前カム１２８Ｃに当接させる。
Hereinafter, the mechanical pencil according to the sixth embodiment of the present invention will be described with reference to FIGS. 17 and 18. In addition, the same member as FIG. 15 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, referring to FIG. 17, a rotation mechanism for rotating the rotation member 314 will be described. An outer collar 314I is formed on the rotating member 314, and a rear cam 314B is formed on the front surface of the outer collar 314I. The rear cam 314B of the rotating member 314 includes a large number of inclined surfaces that are inclined forward in the right rotation direction, and a vertical surface that is positioned between the inclined surfaces. A front cam member 29 is press-fitted and fixed in front of the rear cam 314B of the rotating member 314. The front cam member 29 is aligned with the concave portion 29 </ b> A of the front cam member 29 by engaging the convex portion 314 </ b> J of the rotating member 314. A front cam 29B is formed on the rear surface of the front cam member 29. The front cam 29B is composed of a large number of inclined surfaces inclined rearward in the right rotation direction and a vertical surface located between the inclined surfaces. Configure. The inclined surface of the front cam 29B of the front cam member 29 and the inclined surface of the rear cam 314B of the rotating member 314 are the same number, and the rear cam 314B of the rotating member 314 is approximately at the center of the inclined surface of the front cam 29B of the front cam member 29. A vertical plane is located. In addition, a front cam 128C is formed on the inner surface of the inner piece 128, and a rear cam 128A is formed on the rear surface of the inner portion. The front cam 128C of the inner piece 128 includes a large number of inclined surfaces that are inclined forward in the counterclockwise direction and a vertical surface that is positioned between the inclined surfaces. Further, the rear cam 128A of the inner piece 128 includes a large number of inclined surfaces that are inclined rearward in the counterclockwise direction and a vertical surface that is located between the inclined surfaces. The inclined surface of the front cam 128C of the inner piece 128 and the inclined surface of the rear cam 128A are the same number, and the vertical surface of the rear cam 128A is located at the approximate center of the inclined surface of the front cam 128C. In addition, the inclined surface of the front cam 128C of the inner piece 128 and the inclined surface of the rear cam 128A are configured in the same number as the inclined surface of the front cam 29B of the front cam member 29 and the inclined surface of the rear cam 314B of the rotating member 314. Further, the inner part of the inner piece 128 is positioned between the front cam 29B of the front cam member 29 and the rear cam 314B of the rotating member 314, and the front cam 29B of the front cam member 29 and the front cam of the inner piece 128 are configured. 128C is configured to face each other, and the rear cam 128A of the inner piece 128 and the rear cam 314B of the rotating member 314 are configured to face each other. Further, the inner part of the inner piece 128 is configured to be movable back and forth appropriately in the longitudinal direction between the front cam 29B of the front cam member 29 and the rear cam 314B of the rotating member 314. The front cam 128C of the piece 128, the rear cam 128A of the inner piece 128, and the rear cam 314B of the rotating member 314 are configured to contact each other. The inner piece 128 is attached to the tip member 212 by being press-fitted and fixed, and a rotating member 314 is incorporated in the tip member 212 so as to be movable in the longitudinal direction and to be rotatable. The inner piece 128 and the tip member 212 constitute a cam member. Further, a front spring 118 is attached between the inner stage 212B of the front member 212 and the front cam member 29 with a load of about 100 g at the time of attachment, and the rotary member 314 is urged rearward in the longitudinal direction so that the front cam 29B of the front cam member 29 is moved. The inner piece 128 is brought into contact with the front cam 128C.

上記先部材２１２のキー溝２１２Ａに摺動部材２１７の突部２１７Ｇを挿入し、先部材２１２に対して摺動部材２１７を長手方向に移動可能で回動不能に構成する。また、摺動部材２１７の突部２１７Ｇは先部材２１２の後部表面より円周方向外方に突出する。   The protrusion 217G of the sliding member 217 is inserted into the key groove 212A of the tip member 212, and the sliding member 217 is movable in the longitudinal direction with respect to the tip member 212 and cannot be rotated. Further, the protrusion 217G of the sliding member 217 protrudes outward in the circumferential direction from the rear surface of the tip member 212.

前記先部材２１２をスライド部材３に着脱可能に螺合し、摺動部材２１７の突部２１７Ｇを前軸２のキー２Ｂに当接させるとともに、摺動部材２１７の前端に回転部材３１４の後端を当接可能に構成し、振出式のシャープペンシルを構成する。   The tip member 212 is detachably screwed to the slide member 3 so that the protrusion 217G of the sliding member 217 contacts the key 2B of the front shaft 2, and the rear end of the rotating member 314 is attached to the front end of the sliding member 217. Is configured to be able to come into contact with each other to form a swing-out mechanical pencil.

前記シャープペンシルで筆記を行うと、芯１５が紙面に押されて図１８に示したように、筆圧を受けるチャック５、締具６、連結具９、スライド部材３、先部材２１２及び内駒１２８は停止しているが、スライド部材３に対し手で把持された前軸２及び把持部材１は前進し、前軸２のキー２Ｂに突部２１７Ｇが当接した摺動部材２１７も前軸２とともに前スプリング１１８を圧縮しながら前進する。すると、摺動部材２１７の前端に回転部材３１４の後端が当接し、摺動部材２１７に押されて回転部材３１４も前進する。そして、回転部材３１４の後カム３１４Ｂの傾斜面が内駒１２８の後カム１２８Ａの傾斜面に当接すると、回転部材３１４の後カム３１４Ｂの傾斜面が内駒１２８の後カム１２８Ａの傾斜面の略半分を滑って回転部材３１４が前方に対して右回転する。この回転部材３１４とともに、回転部材３１４に取り付けられた芯ホルダー１６が右回転すると芯１５も右に回転する。この時、芯１５を保持するチャック５も、締具６及び連結具９とともにスライド部材３に対して右に回転する。   When writing with the mechanical pencil, as shown in FIG. 18, the core 15 is pushed against the paper surface, as shown in FIG. 18, the chuck 5, the fastener 6, the connector 9, the slide member 3, the tip member 212, and the inner piece. 128 is stopped, but the front shaft 2 and the gripping member 1 gripped by hand with respect to the slide member 3 are advanced, and the sliding member 217 in which the protrusion 217G is in contact with the key 2B of the front shaft 2 is also the front shaft. 2 and the front spring 118 is compressed while moving forward. Then, the rear end of the rotating member 314 comes into contact with the front end of the sliding member 217 and is pushed by the sliding member 217 so that the rotating member 314 moves forward. When the inclined surface of the rear cam 314B of the rotating member 314 comes into contact with the inclined surface of the rear cam 128A of the inner piece 128, the inclined surface of the rear cam 314B of the rotating member 314 corresponds to the inclined surface of the rear cam 128A of the inner piece 128. The rotating member 314 rotates to the right with respect to the front by slipping about half. When the lead holder 16 attached to the rotating member 314 is rotated to the right together with the rotating member 314, the lead 15 is also rotated to the right. At this time, the chuck 5 holding the lead 15 also rotates to the right with respect to the slide member 3 together with the fastener 6 and the connector 9.

次に、筆記を止め芯１５を紙面より離すと、手で把持された前軸２及び把持部材１に対して、前スプリング１１８により前方に付勢された先部材２１２及びスライド部材３が前進する。すると、スライド部材３とともに、連結具９、締具６、チャック５及び内駒１２８が芯１５とともに前進する。しかし、把持部材１及び前軸２とともに摺動部材２１７及び回転部材３１４は停止しているので、内駒１２８に形成された前カム１２８Ｃの傾斜面が回転部材３１４に設けられた前カム部材２９の前カム２９Ｂの傾斜面に当接し、前カム部材２９の前カム２９Ｂの傾斜面が内駒１２８の前カム１２８Ｃの傾斜面を滑って、前カム部材２９及び回転部材３１４が前方に対して右回転する。また、固定駒４の外段４Ａが前軸２の内鍔２Ａに当接し、図１７の状態に復帰する。すると、前カム部材２９の前カム２９Ｂの傾斜面は内駒１２８の前カム１２８Ｃの傾斜面を１つ乗り越えて右隣りの傾斜面に当接され、芯１５は前カム部材２９の前カム２９Ｂの１つの傾斜面寸法だけ右に回転する。   Next, when writing is stopped and the core 15 is separated from the paper surface, the tip member 212 and the slide member 3 urged forward by the front spring 118 are moved forward with respect to the front shaft 2 and the gripping member 1 gripped by hand. . Then, together with the slide member 3, the connector 9, the fastener 6, the chuck 5, and the inner piece 128 move forward together with the core 15. However, since the sliding member 217 and the rotating member 314 are stopped together with the gripping member 1 and the front shaft 2, the inclined surface of the front cam 128C formed on the inner piece 128 is a front cam member 29 provided on the rotating member 314. The front cam 29B abuts the inclined surface of the front cam 29B, the inclined surface of the front cam 29B of the front cam member 29 slides on the inclined surface of the front cam 128C of the inner piece 128, and the front cam member 29 and the rotating member 314 move forward. Turn right. Further, the outer stage 4A of the fixed piece 4 comes into contact with the inner flange 2A of the front shaft 2 and returns to the state shown in FIG. Then, the inclined surface of the front cam 29B of the front cam member 29 passes over the inclined surface of the front cam 128C of the inner piece 128 and comes into contact with the inclined surface on the right side, and the core 15 is in contact with the front cam 29B of the front cam member 29. Rotate to the right by one slope dimension.

以下、図１９に基づいて本発明における実施例７のシャープペンシルを説明する。尚、図２と同一部材は同一の符号を付してその説明を省略する。先ず、回転部材４１４に、前外鍔４１４Ｋの後面に形成した前カム４１４Ａと後外鍔４１４Ｌの前面に形成した後カム４１４Ｂを構成する。この回転部材４１４の前カム４１４Ａは、右回転方向に向かって後方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。また、回転部材４１４の後カム４１４Ｂは、右回転方向に向かって前方に傾斜する多数の傾斜面と垂直面により構成する。また、回転部材４１４の前カム４１４Ａの傾斜面及び後カム４１４Ｂの傾斜面は、カム部材としての摺動部材１７の前カム１７Ａの傾斜面１７Ｃと同数に形成する。更に、回転部材４１４の前カム４１４Ａの傾斜面の略中心に後カム４１４Ｂの垂直面が位置する。そして、摺動部材１７の内側部を前記回転部材４１４の前カム４１４Ａと後カム４１４Ｂの間に取り付け、回転部材４１４の前カム４１４Ａと摺動部材１７の前カム１７Ａを対面させるとともに、回転部材４１４の後カム４１４Ｂと摺動部材１７の後カム１７Ｂを対面させて構成する。また、回転部材４１４に対し摺動部材１７は長手方向に適宜前後動可能に構成し、回転部材４１４の前カム４１４Ａと摺動部材１７の前カム１７Ａ及び回転部材４１４の後カム４１４Ｂと摺動部材１７の後カム１７Ｂは当接可能に構成する。   Hereinafter, the mechanical pencil of Example 7 according to the present invention will be described with reference to FIG. The same members as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted. First, a front cam 414A formed on the rear surface of the front outer collar 414K and a rear cam 414B formed on the front surface of the rear outer collar 414L are formed on the rotating member 414. The front cam 414A of the rotating member 414 includes a large number of inclined surfaces that are inclined rearward in the right rotation direction and a vertical surface that is located between the inclined surfaces. Further, the rear cam 414B of the rotating member 414 is configured by a large number of inclined surfaces and vertical surfaces that are inclined forward in the right rotation direction. Further, the inclined surface of the front cam 414A of the rotating member 414 and the inclined surface of the rear cam 414B are formed in the same number as the inclined surface 17C of the front cam 17A of the sliding member 17 as the cam member. Furthermore, the vertical surface of the rear cam 414B is located at the approximate center of the inclined surface of the front cam 414A of the rotating member 414. The inner portion of the sliding member 17 is attached between the front cam 414A and the rear cam 414B of the rotating member 414, the front cam 414A of the rotating member 414 and the front cam 17A of the sliding member 17 face each other, and the rotating member The rear cam 414B of 414 and the rear cam 17B of the sliding member 17 are configured to face each other. Further, the sliding member 17 is configured to be able to move back and forth appropriately in the longitudinal direction with respect to the rotating member 414, and slides with the front cam 414A of the rotating member 414, the front cam 17A of the sliding member 17, and the rear cam 414B of the rotating member 414. The rear cam 17B of the member 17 is configured to be able to contact.

更に、前記回転部材４１４の内面に後方から長手方向前方に伸びたキー溝４１４Ｍを相対位置に形成する。また、前部に芯ガイドパイプ１３を固定した中駒３０に芯ホルダー１６を取り付ける。前記中駒３０の外面の相対位置にキー３０Ａを形成する。この中駒３０を回転部材４１４の後方から挿入し、中駒３０のキー３０Ａを回転部材４１４のキー溝４１４Ｍに係合させることにより、回転部材４１４に対して中駒３０及び芯ホルダー１６を長手方向には摺動可能で回動不能に構成する。   Further, a key groove 414M extending from the rear to the front in the longitudinal direction is formed on the inner surface of the rotating member 414 at a relative position. Further, the lead holder 16 is attached to the middle piece 30 having the lead guide pipe 13 fixed to the front part. A key 30 </ b> A is formed at a relative position on the outer surface of the middle piece 30. The middle piece 30 is inserted from the rear of the rotating member 414, and the key 30A of the middle piece 30 is engaged with the key groove 414M of the rotating member 414. It is configured to be slidable in the direction but not rotatable.

上記先部材１２をスライド部材３に着脱可能に螺合し、先部材１２と連結具９の前端との間に回転部材４１４を回動可能に内蔵し、取付時荷重１００ｇ程度で取り付けられた前スプリング１８により長手方向後方に付勢された摺動部材１７の突部１７Ｇを前軸２のキー２Ｂに当接させる。すると、前軸２の内鍔２Ａが固定駒４の外段４Ａに当接される。 The front member 12 is detachably screwed to the slide member 3, and a rotary member 414 is rotatably incorporated between the front member 12 and the front end of the connector 9, and the front member 12 is attached with a load of about 100g. It is brought into contact with the key 2B for the front axle 2 the collision portion 17G of the sliding member 17 which is urged longitudinally rearward by the spring 18. Then, the inner flange 2 </ b> A of the front shaft 2 is brought into contact with the outer stage 4 </ b> A of the fixed piece 4.

更に、前軸２の後方から円筒状の重量体１９を挿入し、重量体１９を芯タンク８の外面とガイド部材としての固定駒４の内面との間に長手方向に摺動可能に遊嵌する。尚、芯タンク８の外面と重量体１９の内面との隙間より重量体１９の外面と固定駒４の内面との隙間を狭く構成し、振出式シャープペンシルを構成する。   Further, a cylindrical weight body 19 is inserted from the rear of the front shaft 2, and the weight body 19 is loosely slidable in the longitudinal direction between the outer surface of the core tank 8 and the inner surface of the fixed piece 4 as a guide member. To do. The gap between the outer surface of the weight body 19 and the inner surface of the fixed piece 4 is made narrower than the gap between the outer surface of the core tank 8 and the inner surface of the weight body 19, thereby forming a swing-out mechanical pencil.

したがって、芯１５が紙面に押圧され、回転部材４１４が前方に対して右回転すると、中駒３０及び芯ホルダー１６も右回転するために、芯１５も右に回転する。   Therefore, when the core 15 is pressed against the paper surface and the rotating member 414 rotates rightward with respect to the front, the center piece 30 and the core holder 16 also rotate right, so that the core 15 also rotates right.

この実施例７の場合には、携帯時に中駒３０及び芯ガイドパイプ１３を後退させれば、先部材１２内に芯ガイドパイプ１３を没入させることができる。   In the case of the seventh embodiment, the core guide pipe 13 can be immersed in the tip member 12 by retracting the middle piece 30 and the core guide pipe 13 during carrying.

以下、図２０に基づいて本発明における実施例８のシャープペンシルを説明する。尚、図２あるいは図１５と同一部材は同一の符号を付してその説明を省略する。先ず、回転部材５１４に突部５１４Ｇを形成し、この突部５１４Ｇの前面に前カム５１４Ａを形成するとともに、突部５１４Ｇの後面に後カム５１４Ｂを形成する。この回転部材５１４の前カム５１４Ａは、右回転方向に向かって前方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。また、回転部材５１４の後カム５１４Ｂは、右回転方向に向かって後方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。更に、回転部材５１４の内面に後方から長手方向前方に伸びたキー溝５１４Ｍを相対位置に形成する。また、前部に芯ガイドパイプ１３を固定した中駒１３０に芯ホルダー１６を取り付ける。前記中駒１３０の相対位置にキー１３０Ａを形成する。この中駒１３０を回転部材５１４の後方から挿入し、中駒１３０のキー１３０Ａを回転部材５１４のキー溝５１４Ｍに係合させることにより、回転部材５１４に対して中駒１３０及び芯ホルダー１６を長手方向には摺動可能で回動不能に構成する。更に、先部材３１２の内段３１２Ｂと回転部材５１４の内段５１４Ｎとの間に前スプリング１１８を取り付け、回転部材５１４を長手方向後方に付勢して回転部材５１４の後カム５１４Ｂを内駒２８の後カム２８Ａに当接させる。この内駒２８は、先部材３１２の位置決め溝３１２Ｅに内駒２８の位置決め突起２８Ｂを挿入して位置決めした後、先部材３１２に圧入固着される。この先部材３１２と内駒２８によりカム部材を構成する。   Hereinafter, the mechanical pencil of Example 8 according to the present invention will be described with reference to FIG. The same members as those in FIG. 2 or FIG. First, a protrusion 514G is formed on the rotating member 514, a front cam 514A is formed on the front surface of the protrusion 514G, and a rear cam 514B is formed on the rear surface of the protrusion 514G. The front cam 514A of the rotating member 514 includes a large number of inclined surfaces that are inclined forward in the right rotation direction, and a vertical surface that is located between the inclined surfaces. Further, the rear cam 514B of the rotating member 514 includes a large number of inclined surfaces that are inclined rearward in the right rotation direction, and a vertical surface that is located between the inclined surfaces. Further, a key groove 514M extending from the rear to the front in the longitudinal direction is formed on the inner surface of the rotating member 514 at a relative position. Further, the lead holder 16 is attached to the middle piece 130 having the lead guide pipe 13 fixed to the front portion. A key 130 </ b> A is formed at a relative position of the middle piece 130. The middle piece 130 is inserted from the rear side of the rotating member 514, and the key 130A of the inner piece 130 is engaged with the key groove 514M of the rotating member 514, whereby the inner piece 130 and the core holder 16 are elongated with respect to the rotating member 514. It is configured to be slidable in the direction but not rotatable. Further, a front spring 118 is attached between the inner step 312B of the leading member 312 and the inner step 514N of the rotating member 514, and the rotating member 514 is urged rearward in the longitudinal direction to move the rear cam 514B of the rotating member 514 to the inner piece 28. The rear cam 28A. The inner piece 28 is press-fitted and fixed to the tip member 312 after the positioning protrusion 28B of the inner piece 28 is inserted into the positioning groove 312E of the tip member 312 and positioned. The tip member 312 and the inner piece 28 constitute a cam member.

したがって、芯１５が紙面に押圧され、回転部材５１４が前方に対して右回転すると、中駒１３０及び芯ホルダー１６も右回転するために、芯１５も右に回転する。   Accordingly, when the lead 15 is pressed against the paper surface and the rotating member 514 rotates rightward with respect to the front, the core piece 130 and the lead holder 16 also rotate right, so that the lead 15 also rotates right.

この実施例８の場合も、携帯時に中駒１３０及び芯ガイドパイプ１３を後退させれば、先部材３１２内に芯ガイドパイプ１３を没入させることができる。   Also in the case of the eighth embodiment, the core guide pipe 13 can be immersed in the tip member 312 by retracting the middle piece 130 and the core guide pipe 13 when carrying.

以下、図２１及び図２２に基づいて本発明における実施例９のシャープペンシルを説明する。尚、図１と同一部材は同一の符号を付してその説明を省略する。先ず、シリコンゴム等の軟質材で構成された把持部材１を前軸２０２に固定して取り付ける。この前軸２０２には中間部に内鍔２０２Ａが形成されるとともに、前部に前方から後方に伸びたキー溝２０２Ｃが互いに対向して形成されるとともに、その前方に雌ネジ部２０２Ｄが形成される。   Hereinafter, the mechanical pencil according to the ninth embodiment of the present invention will be described with reference to FIGS. 21 and 22. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the holding member 1 made of a soft material such as silicon rubber is fixedly attached to the front shaft 202. The front shaft 202 is formed with an inner collar 202A in the middle, a key groove 202C extending from the front to the rear is formed facing the front, and a female screw portion 202D is formed in front of the key groove 202C. The

シャープペンシルの機構部は、チャック５と、締具６と、コネクター７と、芯タンク８と、締具６を長手方向に適宜移動可能に凹溝１０９Ｃ内に遊嵌する連結具１０９と、連結具１０９とコネクター７の間に取付時荷重が１００ｇ程度で取り付けられるチャックスプリング１０とにより構成される。   The mechanical part of the mechanical pencil includes a chuck 5, a fastener 6, a connector 7, a core tank 8, a coupling tool 109 that loosely fits the fastening tool 6 in the concave groove 109 </ b> C so as to be movable in the longitudinal direction, and a coupling The chuck spring 10 is attached between the tool 109 and the connector 7 with a loading load of about 100 g.

前記機構部をスライド部材１０３の前方より挿入し、スライド部材１０３の内鍔１０３Ｂが連結具１０９の前部外鍔１０９Ｂと後部外鍔１０９Ａの間に回動自在に係合される。   The mechanism portion is inserted from the front of the slide member 103, and the inner collar 103B of the slide member 103 is rotatably engaged between the front outer collar 109B and the rear outer collar 109A of the connector 109.

更に、先部材４１２には芯ガイドパイプ１３を固定した回転部材６１４が回動可能に内蔵され、回転部材６１４の前外鍔６１４Ｏを先部材４１２の係止段４１２Ｃと先部材４１２に取り付けられた駒３１との間に回動自在に配置する。この回転部材６１４に芯１５を５０ｇ程度の摩擦力で保持するゴム製の芯ホルダー１６を取り付ける。   Further, the tip member 412 includes a rotating member 614 fixed with the core guide pipe 13 in a rotatable manner, and a front outer rod 614O of the rotating member 614 is attached to the locking step 412C of the tip member 412 and the tip member 412. It arrange | positions rotatably between the pieces 31. FIG. A rubber core holder 16 that holds the core 15 with a frictional force of about 50 g is attached to the rotating member 614.

次に、前記回転部材６１４を回転させるための回転機構を説明する。回転部材６１４に、前段の後面に形成した前カム６１４Ａと後段の前面に形成した後カム６１４Ｂを構成する。この回転部材６１４の前カム６１４Ａは、右回転方向に向かって後方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。また、回転部材６１４の後カム６１４Ｂは、右回転方向に向かって前方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。更に、カム部材としての摺動部材３１７の内側部に、前端面に形成した前カム３１７Ａと後端面に形成した後カム３１７Ｂを構成する。この摺動部材３１７の前カム３１７Ａは、左回転方向に向かって前方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。また、摺動部材３１７の後カム３１７Ｂは、左回転方向に向かって後方に傾斜する多数の傾斜面と、傾斜面と傾斜面の間に位置する垂直面により構成する。更に、摺動部材３１７の前カム３１７Ａの傾斜面と後カム３１７Ｂの傾斜面は同数で前カム３１７Ａの傾斜面の略中心に後カム３１７Ｂの垂直面が位置する。また、回転部材６１４の前カム６１４Ａの傾斜面と後カム６１４Ｂの傾斜面も摺動部材３１７の前カム３１７Ａの傾斜面及び後カム３１７Ｂの傾斜面と同数で、やはり前カム６１４Ａの傾斜面の略中心に後カム６１４Ｂの垂直面が位置する。前記摺動部材３１７の内側部を前記回転部材６１４の前カム６１４Ａと後カム６１４Ｂの間に取り付け、回転部材６１４の前カム６１４Ａと摺動部材３１７の前カム３１７Ａを対面させるとともに、回転部材６１４の後カム６１４Ｂと摺動部材３１７の後カム３１７Ｂを対面させて構成する。また、回転部材６１４に対し摺動部材３１７は長手方向に適宜前後動可能に構成し、回転部材６１４の前カム６１４Ａと摺動部材３１７の前カム３１７Ａ及び回転部材６１４の後カム６１４Ｂと摺動部材３１７の後カム３１７Ｂは当接可能に構成される。   Next, a rotating mechanism for rotating the rotating member 614 will be described. The rotary member 614 includes a front cam 614A formed on the rear surface of the front stage and a rear cam 614B formed on the front surface of the rear stage. The front cam 614A of the rotating member 614 includes a large number of inclined surfaces that are inclined rearward in the right rotation direction, and a vertical surface that is located between the inclined surfaces. Further, the rear cam 614B of the rotating member 614 includes a large number of inclined surfaces that are inclined forward in the right rotation direction, and a vertical surface that is located between the inclined surfaces. Further, a front cam 317A formed on the front end surface and a rear cam 317B formed on the rear end surface are formed inside the sliding member 317 as a cam member. The front cam 317A of the sliding member 317 includes a large number of inclined surfaces that are inclined forward in the left rotation direction, and a vertical surface that is located between the inclined surfaces. Further, the rear cam 317B of the sliding member 317 is configured by a large number of inclined surfaces that are inclined rearward in the counterclockwise direction and a vertical surface that is located between the inclined surfaces. Further, the inclined surface of the front cam 317A of the sliding member 317 and the inclined surface of the rear cam 317B are the same in number, and the vertical surface of the rear cam 317B is positioned at the approximate center of the inclined surface of the front cam 317A. Further, the inclined surface of the front cam 614A and the inclined surface of the rear cam 614B of the rotating member 614 are the same in number as the inclined surface of the front cam 317A and the inclined surface of the rear cam 317B of the sliding member 317, and also the inclined surface of the front cam 614A. The vertical surface of the rear cam 614B is located substantially at the center. The inner part of the sliding member 317 is attached between the front cam 614A and the rear cam 614B of the rotating member 614, the front cam 614A of the rotating member 614 and the front cam 317A of the sliding member 317 are faced, and the rotating member 614 The rear cam 614B and the rear cam 317B of the sliding member 317 are configured to face each other. Further, the sliding member 317 is configured to be able to move back and forth appropriately in the longitudinal direction with respect to the rotating member 614, and slides with the front cam 614A of the rotating member 614, the front cam 317A of the sliding member 317, and the rear cam 614B of the rotating member 614. The rear cam 317B of the member 317 is configured to be able to contact.

この回転部材６１４を先部材４１２に内蔵し、先部材４１２の係止段４１２Ｃと先部材４１２に圧入固着された駒３１の間に回転部材６１４の前外鍔６１４Ｏを配置し、先部材４１２に対して回転部材６１４を回動自在でかつ長手方向に移動不能に取り付ける。   The rotating member 614 is incorporated in the tip member 412, and a front outer rod 614 O of the rotating member 614 is disposed between the locking step 412 C of the tip member 412 and the piece 31 press-fitted and fixed to the tip member 412. On the other hand, the rotating member 614 is attached so as to be rotatable and immovable in the longitudinal direction.

更に、前記回転機構の摺動部材３１７をスライド部材１０３に圧入固着し、摺動部材３１７とスライド部材１０３を回動不能に連結する。   Further, the sliding member 317 of the rotating mechanism is press-fitted and fixed to the slide member 103, and the sliding member 317 and the slide member 103 are connected so as not to rotate.

前記前軸２０２に回転機構を取り付けるには、先ず、前軸２０２に前方より緩衝スプリング３２を挿入し、その後、先部材４１２、摺動部材３１７及び回転部材６１４を組み立てたスライド部材１０３を前軸２０２の前方より挿入し、摺動部材３１７のキー３１７Ｋを前軸２０２のキー溝２０２Ｃに挿入するとともに、前軸２０２の雌ネジ部２０２Ｄに先部材４１２の雄ネジ部４１２Ｆを着脱可能に螺合する。また、スライド部材１０３の後端と前軸２０２の内鍔２０２Ａとの間に取付時荷重１５０ｇ程度で緩衝スプリング３２が取り付けられる。   In order to attach the rotation mechanism to the front shaft 202, first, the buffer spring 32 is inserted into the front shaft 202 from the front, and then the slide member 103 assembled with the front member 412, the sliding member 317, and the rotation member 614 is moved to the front shaft. 202, the key 317K of the sliding member 317 is inserted into the key groove 202C of the front shaft 202, and the male screw portion 412F of the tip member 412 is detachably screwed into the female screw portion 202D of the front shaft 202. To do. Further, the buffer spring 32 is attached between the rear end of the slide member 103 and the inner flange 202A of the front shaft 202 with an attachment load of about 150 g.

更に、前軸２０２の後方から円筒状の重量体１９を挿入し、重量体１９を芯タンク８の外面と前軸２０２の内面との間に長手方向に摺動可能に遊嵌する。尚、芯タンク８の外面と重量体１９の内面との隙間より重量体１９の外面と前軸２０２の内面との隙間を狭く構成し、振出式のシャープペンシルを構成する。   Further, a cylindrical weight body 19 is inserted from the rear of the front shaft 202, and the weight body 19 is loosely fitted between the outer surface of the core tank 8 and the inner surface of the front shaft 202 so as to be slidable in the longitudinal direction. The gap between the outer surface of the weight body 19 and the inner surface of the front shaft 202 is made narrower than the gap between the outer surface of the core tank 8 and the inner surface of the weight body 19, thereby forming a swing-out mechanical pencil.

この実施例９の振出式のシャープペンシルで筆記を行うと、芯１５が紙面に押され、筆圧を受けるチャック５、締具６、連結具１０９、スライド部材１０３が後退し緩衝スプリング３２を圧縮する。すると、スライド部材１０３に固着された摺動部材３１７も後退し、摺動部材３１７の後カム３１７Ｂの傾斜面が回転部材６１４の後カム６１４Ｂの傾斜面に当接する。しかし、摺動部材３１７はキー３１７Ｋが前軸２０２のキー溝２０２Ｃに挿入されて前軸２０２に対し回動不能となっているので、回転部材６１４の後カム６１４Ｂの傾斜面が摺動部材３１７の後カム３１７Ｂの傾斜面の略半分を滑って、回転部材６１４が前方に対して右回転する。回転部材６１４とともに回転部材６１４に取り付けられた芯ホルダー１６が右回転すると芯１５も右に回転する。この時、芯１５を保持するチャック５も、締具６及び連結具１０９とともにスライド部材１０３に対して右に回転する。   When writing is performed with the swing-out type mechanical pencil of the ninth embodiment, the core 15 is pushed against the paper surface, the chuck 5, receiving the writing pressure, the fastener 6, the connecting tool 109, and the slide member 103 are retracted to compress the buffer spring 32. To do. Then, the sliding member 317 fixed to the slide member 103 also moves backward, and the inclined surface of the rear cam 317B of the sliding member 317 contacts the inclined surface of the rear cam 614B of the rotating member 614. However, since the key 317K is inserted into the key groove 202C of the front shaft 202 and the sliding member 317 cannot rotate with respect to the front shaft 202, the inclined surface of the rear cam 614B of the rotating member 614 is the sliding member 317. The rotating member 614 rotates clockwise with respect to the front by sliding along substantially half of the inclined surface of the rear cam 317B. When the lead holder 16 attached to the rotary member 614 together with the rotary member 614 rotates to the right, the lead 15 also rotates to the right. At this time, the chuck 5 holding the lead 15 also rotates to the right with respect to the slide member 103 together with the fastener 6 and the connecting tool 109.

次に、筆記を止めて芯１５を紙面より離すと、緩衝スプリング３２により前方に付勢されたスライド部材１０３が前進する。すると、スライド部材１０３とともに、連結具１０９、締具６、チャック５、摺動部材３１７が前進する。そして、摺動部材３１７の前カム３１７Ａの傾斜面が回転部材６１４の前カム６１４Ａの傾斜面に当接し、回転部材６１４の前カム６１４Ａの傾斜面が摺動部材３１７の前カム３１７Ａの傾斜面の略半分を滑って回転部材６１４が前方に対して右回転する。すると、回転部材６１４の前カム６１４Ａの傾斜面は摺動部材３１７の前カム３１７Ａの傾斜面を１つ乗り越えて右隣りの傾斜面に当接され、芯１５は回転部材６１４の前カム６１４Ａの１つの傾斜面寸法だけ右に回転する。   Next, when writing is stopped and the core 15 is separated from the paper surface, the slide member 103 urged forward by the buffer spring 32 moves forward. Then, together with the slide member 103, the connector 109, the fastener 6, the chuck 5, and the sliding member 317 move forward. The inclined surface of the front cam 317A of the sliding member 317 contacts the inclined surface of the front cam 614A of the rotating member 614, and the inclined surface of the front cam 614A of the rotating member 614 is inclined to the inclined surface of the front cam 317A of the sliding member 317. The rotating member 614 rotates to the right with respect to the front. Then, the inclined surface of the front cam 614A of the rotating member 614 passes over one inclined surface of the front cam 317A of the sliding member 317 and comes into contact with the inclined surface on the right side, and the core 15 of the front cam 614A of the rotating member 614 is contacted. Rotate to the right by one ramp dimension.

以下、図２３及び図２４に基づいて本発明における実施例１０のシャープペンシルを説明する。尚、図１９と同一部材は同一の符号を付してその説明を省略する。先ず、先部材５１２を透明あるいは着色した透明性を有する合成樹脂で構成し、表面に梨地加工や不透明のインキで印刷を行うかあるいは転写を行うとともに、その一部に透明性を有する窓部５１２Ｇを形成する。更に、先部材５１２の後部に後端から切り欠かれて伸びたキー溝５１２Ａを相対位置に形成する。また、回転部材４１４に表示部材３３を圧入固着して取り付ける。この表示部材３３には芯１５の回転が目視できるように表示３３Ａが設けられる。この表示部材３３の表示３３Ａは、印刷、転写あるいはシール等により構成する。尚、図示していないが、表示部材は回転部材と一体に構成しても良い。   Hereinafter, the mechanical pencil of Example 10 according to the present invention will be described with reference to FIGS. 23 and 24. In addition, the same member as FIG. 19 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the tip member 512 is made of a transparent or colored synthetic resin, and the surface is printed with a satin finish or opaque ink or transferred, and a part of the window 512G is transparent. Form. Further, a key groove 512A that is cut out from the rear end and extends at the rear portion of the front member 512 is formed at a relative position. Further, the display member 33 is press-fitted and attached to the rotating member 414. The display member 33 is provided with a display 33A so that the rotation of the core 15 can be visually observed. The display 33A of the display member 33 is configured by printing, transferring, sealing, or the like. Although not shown, the display member may be integrated with the rotating member.

この回転部材４１４を前記先部材５１２内に内蔵するとともに、先部材５１２のキー溝５１２Ａにカム部材としての摺動部材１７の突部１７Ｇを挿入する。そして、先部材５１２をスライド部材３に着脱可能に螺合して取り付ける。すると、表示部材３３に形成された表示３３Ａが先部材５１２の窓部５１２Ｇより目視可能となる。したがって、回転部材４１４が回転する状態を先部材５１２の窓部５１２Ｇより常時目視することができる。   The rotating member 414 is built in the tip member 512, and the protrusion 17G of the sliding member 17 as a cam member is inserted into the key groove 512A of the tip member 512. Then, the tip member 512 is removably screwed to the slide member 3 and attached. Then, the display 33 </ b> A formed on the display member 33 can be viewed from the window portion 512 </ b> G of the tip member 512. Therefore, the state in which the rotating member 414 rotates can be always visually observed from the window portion 512G of the tip member 512.

尚、先部材５１２の窓部５１２Ｇは、円周状に形成したり円周方向等間隔に複数形成することが好ましい。   In addition, it is preferable to form the window part 512G of the tip member 512 in a circumferential shape or in a plurality at equal intervals in the circumferential direction.

この実施例１０のシャープペンシルの場合には、芯１５の回転を示す表示３３Ａが先部材５１２の窓部５１２Ｇを通して目視でき、筆記中に表示３３Ａが目視し易いという利点が得られる。   In the case of the mechanical pencil of the tenth embodiment, the display 33A indicating the rotation of the core 15 can be viewed through the window 512G of the tip member 512, and the display 33A can be easily viewed during writing.

以下、図２５及び図２６に基づいて本発明における実施例１１のシャープペンシルを説明する。尚、図２３と同一部材は同一の符号を付してその説明を省略する。先ず、先部材６１２を透明あるいは着色した透明性を有する合成樹脂で構成し、表面後部に雄ネジ部６１２Ｈを構成する。この先部材６１２の表面に、不透明のインキで印刷を行うかあるいは転写を行うとともに、その一部に透明性を有する窓部を形成する。更に、先部材６１２の後部に後端から切り欠かれて伸びたキー溝６１２Ａを相対位置に形成する。また、ロック部材３４に雌ネジ部３４Ａを形成するとともに係止部３４Ｂを後方に伸ばして構成する。このロック部材３４を先部材６１２に長手方向に移動可能に螺合する。しかも、このロック部材３４の係止部３４Ｂは前軸２の前端と当接可能に構成する。そして、通常は、ロック部材３４の係止部３４Ｂと前軸２の前端とが適宜離間して構成し、図２５の状態にすれば、先部材６１２及びスライド部材３に対して前軸２が長手方向に移動可能となっている。したがって、この状態では回転部材４１４の回転機構が働き、筆記を行えば芯１５が回転する。   Hereinafter, the mechanical pencil of Example 11 according to the present invention will be described with reference to FIGS. 25 and 26. In addition, the same member as FIG. 23 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the tip member 612 is made of a transparent or colored synthetic resin having transparency, and a male screw portion 612H is formed on the rear surface portion. On the surface of the tip member 612, printing or transfer is performed with opaque ink, and a transparent window portion is formed in a part thereof. Further, a key groove 612A that is notched and extended from the rear end is formed at the rear portion of the front member 612 at a relative position. Further, the lock member 34 is formed by forming a female screw portion 34A and extending the locking portion 34B rearward. The lock member 34 is screwed to the tip member 612 so as to be movable in the longitudinal direction. Moreover, the locking portion 34B of the lock member 34 is configured to be able to contact the front end of the front shaft 2. In general, the engaging portion 34B of the lock member 34 and the front end of the front shaft 2 are appropriately separated from each other. When the state shown in FIG. It is movable in the longitudinal direction. Therefore, in this state, the rotating mechanism of the rotating member 414 works, and the core 15 rotates when writing is performed.

また、芯１５の回転を止めたい場合には、ロック部材３４を回転させて後退させ、係止部３４Ｂを前軸２に当接させ図２６の状態にする。すると、先部材６１２及びスライド部材３に対して前軸２が長手方向に移動できなくなり、筆記を行っても芯１５が回転しない。   Further, when it is desired to stop the rotation of the core 15, the lock member 34 is rotated and retracted, and the locking portion 34B is brought into contact with the front shaft 2 to be in the state shown in FIG. Then, the front shaft 2 cannot move in the longitudinal direction with respect to the tip member 612 and the slide member 3, and the core 15 does not rotate even if writing is performed.

この実施例１１の場合には、使用者の使用目的によって芯１５が回転する状態と芯１５が回転しない状態を選択できるとともに、芯１５の回転を先部材６１２の窓部より確認できるので、筆記中に芯１５が回転しているのか回転していないのかが自然に判断できる利点が得られる。   In the case of the eleventh embodiment, the state in which the lead 15 rotates and the state in which the lead 15 does not rotate can be selected according to the purpose of use by the user, and the rotation of the lead 15 can be confirmed from the window of the tip member 612. There is an advantage that it is possible to naturally determine whether the core 15 is rotating or not.

以下、図２７、図２８、図２９及び図３０に基づいて本発明における実施例１２のシャープペンシルを説明する。尚、図２５と同一部材は同一の符号を付してその説明を省略する。先ず、先部材７１２を透明あるいは着色した透明性を有する合成樹脂で構成し、表面後部７１２Ｉを隆起させて構成するとともに、その表面後部７１２Ｉに円周方向に伸びた突状部７１２Ｊを形成する。この先部材７１２の表面に、不透明のインキで印刷を行うかあるいは転写を行うとともに、その一部に透明性を有する窓部を形成する。更に、先部材７１２の後部に後端から切り欠かれて伸びたキー溝７１２Ａを相対位置に形成する。また、ロック部材１３４の内面に円周方向に伸びた凹状部１３４Ｃを形成するとともに、後方に伸ばしたカム部１３４Ｄを相対位置に形成する。このカム部１３４Ｄには、係止部１３４Ｂと係止部１３４Ｂより更に後方に伸びたストッパー部１３４Ｅを形成する。また、前軸３０２のカム部３０２Ｅには、後方に切り欠かれた凹部３０２Ｆを相対位置に形成する。前記ロック部材１３４の凹状部１３４Ｃを先部材７１２の突状部７１２Ｊに回動自在に取り付ける。また、ロック部材１３４のカム部１３４Ｄを前軸３０２の凹部３０２Ｆに合わせて図２７及び図２８に示した状態にすれば、ロック部材１３４のカム部１３４Ｄと前軸３０２のカム部３０２Ｅが適宜離間して、先部材７１２及びスライド部材３に対して前軸３０２が長手方向に移動可能となる。したがって、この状態では回転部材４１４の回転機構が働き、筆記を行えば芯１５が回転する。   Hereinafter, a mechanical pencil according to Example 12 of the present invention will be described with reference to FIGS. 27, 28, 29, and 30. FIG. In addition, the same member as FIG. 25 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the tip member 712 is made of a transparent or colored synthetic resin having transparency, and the rear surface portion 712I is raised, and a protruding portion 712J extending in the circumferential direction is formed on the rear surface portion 712I. On the surface of the tip member 712, printing or transfer is performed with opaque ink, and a transparent window portion is formed in a part thereof. Further, a key groove 712A that is cut out from the rear end and extends at the rear portion of the front member 712 is formed at a relative position. Further, a concave portion 134C extending in the circumferential direction is formed on the inner surface of the lock member 134, and a cam portion 134D extending rearward is formed at a relative position. The cam portion 134D is formed with a locking portion 134B and a stopper portion 134E extending further rearward than the locking portion 134B. Further, the cam portion 302E of the front shaft 302 is formed with a concave portion 302F that is notched rearward at a relative position. The concave portion 134C of the lock member 134 is rotatably attached to the protruding portion 712J of the tip member 712. Further, if the cam portion 134D of the lock member 134 is aligned with the concave portion 302F of the front shaft 302 as shown in FIGS. 27 and 28, the cam portion 134D of the lock member 134 and the cam portion 302E of the front shaft 302 are appropriately separated from each other. Thus, the front shaft 302 can move in the longitudinal direction with respect to the tip member 712 and the slide member 3. Therefore, in this state, the rotating mechanism of the rotating member 414 works, and the core 15 rotates when writing is performed.

また、芯１５の回転を止めたい場合には、ロック部材１３４を前方に対して右に回転させれば、ロック部材１３４のストッパー部１３４Ｅが前軸３０２のカム部３０２Ｅに形成した凹部３０２Ｆの縁３０２Ｇに当接してロック部材１３４の回転が停止されるとともに、ロック部材１３４の係止部１３４Ｂが前軸３０２のカム部３０２Ｅに接触して図２９及び図３０に示した状態となる。この状態では、先部材７１２及びスライド部材３に対して前軸３０２が長手方向前方に移動できなくなり、筆記を行なっても芯１５が回転しない。   Further, when it is desired to stop the rotation of the core 15, if the lock member 134 is rotated to the right with respect to the front, the edge of the recess 302 </ b> F formed by the stopper portion 134 </ b> E of the lock member 134 on the cam portion 302 </ b> E of the front shaft 302 The lock member 134 stops rotating by coming into contact with 302G, and the locking portion 134B of the lock member 134 contacts the cam portion 302E of the front shaft 302, resulting in the state shown in FIGS. In this state, the front shaft 302 cannot move forward in the longitudinal direction with respect to the tip member 712 and the slide member 3, and the core 15 does not rotate even if writing is performed.

この実施例１２の場合にも、使用目的によって芯１５が回転する状態と芯１５が回転しない状態を選択できるとともに、芯１５の回転を先部材７１２の窓部より確認できるので、筆記中に芯１５が回転しているのか回転していないのかが自然に判断できる利点が得られる。   Also in the case of the twelfth embodiment, the state in which the lead 15 rotates and the state in which the lead 15 does not rotate can be selected depending on the purpose of use, and the rotation of the lead 15 can be confirmed from the window portion of the tip member 712. There is an advantage that it is possible to determine naturally whether 15 is rotating or not.

以下、図３１及び図３２に基づいて本発明における実施例１３のシャープペンシルを説明する。尚、図１と同一部材は同一の符号を付してその説明を省略する。先ず、軟質材で構成された把持部材１を前軸４０２に固定して取り付ける。また、前軸４０２の後部に雌ネジ部４０２Ｈを形成する。更に、ロック部材２３４の前部に雄ネジ部２３４Ｆを形成するとともに、後部２３４Ｇを太径に形成する。前記前軸４０２の雌ネジ部４０２Ｈにロック部材２３４の雄ネジ部２３４Ｆが長手方向に移動可能に螺合され、かつ、ロック部材２３４の後部２３４Ｇが固定駒３０４の外鍔３０４Ｃに被さって構成される。そして、図３１に示した状態では、先部材１２に対してカム部材としての摺動部材１７は長手方向に移動可能に構成される。したがって、この状態では回転部材１４の回転機構が働き、筆記を行えば芯１５が回転する。   Hereinafter, the mechanical pencil of Example 13 according to the present invention will be described with reference to FIGS. 31 and 32. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the gripping member 1 made of a soft material is fixedly attached to the front shaft 402. Further, a female screw portion 402H is formed at the rear portion of the front shaft 402. Further, the male screw portion 234F is formed at the front portion of the lock member 234, and the rear portion 234G is formed with a large diameter. The male screw portion 234F of the lock member 234 is screwed to the female screw portion 402H of the front shaft 402 so as to be movable in the longitudinal direction, and the rear portion 234G of the lock member 234 covers the outer casing 304C of the fixing piece 304. The And in the state shown in FIG. 31, the sliding member 17 as a cam member is comprised with respect to the front member 12 so that a movement in a longitudinal direction is possible. Therefore, in this state, the rotating mechanism of the rotating member 14 works, and the core 15 rotates when writing is performed.

また、芯１５の回転を止めたい場合には、ロック部材２３４を回転させて前軸４０２を長手方向前方に移動させる。すると、図３２に示した状態となり、前軸４０２のキー４０２Ｂに押されて摺動部材１７が前方に移動し、先部材１２のキー溝１２Ａの前端縁に摺動部材１７の突部１７Ｇが当接する。この状態では、先部材１２及びスライド部材３に対して前軸４０２及び摺動部材１７が長手方向に往復動できなくなり、筆記を行なっても芯１５が回転しない。   When it is desired to stop the rotation of the core 15, the lock member 234 is rotated to move the front shaft 402 forward in the longitudinal direction. 32, the sliding member 17 is moved forward by being pushed by the key 402B of the front shaft 402, and the protrusion 17G of the sliding member 17 is formed on the front edge of the key groove 12A of the tip member 12. Abut. In this state, the front shaft 402 and the sliding member 17 cannot reciprocate in the longitudinal direction with respect to the tip member 12 and the slide member 3, and the core 15 does not rotate even if writing is performed.

この実施例１３の場合には、筆記中にロック部材２３４が指に当たらないので、誤作動が発生する恐れが少なくなる。尚、図示していないが、この実施例１３においても芯１５の回転を表示する表示部材を取り付けることもできる。   In the case of the thirteenth embodiment, the lock member 234 does not hit the finger during writing, so that the possibility of malfunctioning is reduced. Although not shown, a display member for displaying the rotation of the core 15 can also be attached in the thirteenth embodiment.

以下、図３３に基づいて本発明における実施例１４のシャープペンシルを説明する。尚、図１と同一部材は同一の符号を付してその説明を省略する。先ず、スライド部材２０３の後端と前軸２の内鍔２Ａとの間に取付時荷重が１５０ｇ程度の緩衝スプリング３２を取り付ける。この緩衝スプリング３２の取付時荷重は前スプリング１８の取付時荷重より強く構成する。また、スライド部材２０３に固定駒４０４が圧入固着され、固定駒４０４の外段４０４Ａが前軸２の内鍔２Ａに当接される。この固定駒４０４の後方から円筒状の重量体１９を挿入し、重量体１９を芯タンク８の外面と固定駒４０４の内面との間に長手方向に摺動可能に遊嵌する。尚、芯タンク８の外面と重量体１９の内面との隙間より重量体１９の外面と固定駒４０４の内面との隙間を狭く構成する。前記固定駒４０４の後部に後軸２０を着脱可能に螺合してシャープペンシルを構成する。   Hereinafter, the mechanical pencil of Example 14 according to the present invention will be described with reference to FIG. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the shock absorbing spring 32 having a load of about 150 g is attached between the rear end of the slide member 203 and the inner flange 2A of the front shaft 2. The load when the buffer spring 32 is attached is configured to be stronger than the load when the front spring 18 is attached. Further, the fixed piece 404 is press-fitted and fixed to the slide member 203, and the outer stage 404 </ b> A of the fixed piece 404 is brought into contact with the inner flange 2 </ b> A of the front shaft 2. A cylindrical weight body 19 is inserted from the rear of the fixed piece 404, and the weight body 19 is loosely fitted between the outer surface of the core tank 8 and the inner surface of the fixed piece 404 so as to be slidable in the longitudinal direction. The gap between the outer surface of the weight body 19 and the inner surface of the fixed piece 404 is narrower than the gap between the outer surface of the core tank 8 and the inner surface of the weight body 19. The rear shaft 20 is detachably screwed to the rear part of the fixed piece 404 to constitute a mechanical pencil.

前記シャープペンシルで筆記を行うと、芯１５が紙面に押圧され、筆圧を受けるチャック５、締具６、連結具９、スライド部材２０３、固定駒４０４、先部材１２及び回転部材１４は停止しているが、スライド部材２０３に対し手で把持された前軸２及び把持部材１は緩衝スプリング３２を圧縮しながら前進し、前軸２のキー２Ｂに突部１７Ｇが当接したカム部材としての摺動部材１７も前軸２とともに前スプリング１８を圧縮しながら前進する。この摺動部材１７の往復動によって回転部材１４を回転させる。   When writing is performed with the mechanical pencil, the core 15 is pressed against the paper surface, and the chuck 5, the fastener 6, the connecting tool 9, the slide member 203, the fixed piece 404, the tip member 12, and the rotating member 14 that receive the writing pressure are stopped. However, the front shaft 2 and the gripping member 1 gripped by hand with respect to the slide member 203 move forward while compressing the buffer spring 32, and serve as a cam member in which the protrusion 17G contacts the key 2B of the front shaft 2. The sliding member 17 also moves forward together with the front shaft 2 while compressing the front spring 18. The rotating member 14 is rotated by the reciprocating motion of the sliding member 17.

したがって、芯１５が筆圧を受けることによって手で把持された前軸２及び把持部材１が前進する時、緩衝スプリング３２によってゆるやかに移動させることができ、筆記中に前軸２及び把持部材１が揺動することによって生じる筆記の妨げを緩和できる利点が得られる。   Therefore, when the front shaft 2 and the gripping member 1 gripped by the hand by the core 15 receiving the writing pressure are advanced, the front shaft 2 and the gripping member 1 can be moved gently by the buffer spring 32 during writing. There is an advantage that the hindrance to writing caused by the rocking can be alleviated.

以下、図３４、図３５及び図３６に基づいて本発明における実施例１５のシャープペンシルを説明する。尚、図３３と同一部材は同一の符号を付してその説明を省略する。先ず、スライド部材２０３の後端と前軸２の内鍔２Ａとの間にゴムあるいは低反発発泡体等の軟質材で構成された緩衝部材３５を取付時荷重１５０ｇ程度で取り付ける。この緩衝部材３５は円筒状に形成し、その後部には長手方向後方に突出する突部３５Ａが円周方向等間隔に複数形成されている。また、緩衝部材３５の取付時荷重は前スプリング１８の取付時荷重より強く構成する。   Hereinafter, the mechanical pencil according to the fifteenth embodiment of the present invention will be described with reference to FIGS. 34, 35, and 36. 33 identical to those in FIG. 33 are assigned the same reference numerals as in FIG. First, a shock-absorbing member 35 made of a soft material such as rubber or low-rebound foam is attached between the rear end of the slide member 203 and the inner flange 2A of the front shaft 2 with a load of about 150 g. The buffer member 35 is formed in a cylindrical shape, and a plurality of protrusions 35A protruding rearward in the longitudinal direction are formed at regular intervals in the circumferential direction. Further, the load at the time of mounting the buffer member 35 is configured to be stronger than the load at the time of mounting the front spring 18.

前記シャープペンシルで筆記を行うと、芯１５が紙面に押圧され、筆記を受けるチャック５、締具６、連結具９、スライド部材２０３、固定駒４０４、先部材１２及び回転部材１４は停止しているが、スライド部材２０３に対し手で把持された前軸２及び把持部材１は緩衝部材３５を圧縮しながら前進し、前軸２のキー２Ｂに突部１７Ｇが当接したカム部材としての摺動部材１７も前軸２とともに前スプリング１８を圧縮しながら前進する。この摺動部材１７の往復動によって回転部材１４を回転させる。   When writing with the mechanical pencil, the core 15 is pressed against the paper surface, and the chuck 5, the fastener 6, the connecting tool 9, the slide member 203, the fixed piece 404, the tip member 12 and the rotating member 14 that receive the writing are stopped. However, the front shaft 2 and the gripping member 1 gripped by hand with respect to the slide member 203 move forward while compressing the buffer member 35, and the slide as a cam member in which the protrusion 17G is in contact with the key 2B of the front shaft 2 is supported. The moving member 17 also moves forward together with the front shaft 2 while compressing the front spring 18. The rotating member 14 is rotated by the reciprocating motion of the sliding member 17.

したがって、芯１５が筆圧を受けることによって手で把持された前軸２及び把持部材１が前進する時、緩衝部材３５によって緩やかに移動させることができ、筆記中に前軸２及び把持部材１が揺動することによって生じる筆記の妨げを緩和できる利点が得られる。   Therefore, when the front shaft 2 and the gripping member 1 gripped by the hand by receiving the writing pressure of the core 15 are advanced, the front shaft 2 and the gripping member 1 can be gently moved by the buffer member 35 during writing. There is an advantage that the hindrance to writing caused by the rocking can be alleviated.

以下、図３７、図３８及び図３９に基づいて本発明における実施例１６のシャープペンシルを説明する。尚、図１５と同一部材は同一の符号を付してその説明を省略する。先ず、機構部をスライド部材３０３の前方より挿入し、スライド部材３０３の内鍔３０３Ｂを連結具９の後部外鍔９Ａが挿通し、スライド部材３０３の内鍔３０３Ｂが連結具９の前部外鍔９Ｂと後部外鍔９Ａの間に回動自在に係合される。前記スライド部材３０３の前部には雄ネジ部３０３Ｃが形成されるとともに、図示していないがスライド部材３０３の後部に後軸が着脱可能に螺合されている。   Hereinafter, a mechanical pencil according to Example 16 of the present invention will be described with reference to FIGS. 37, 38, and 39. FIG. In addition, the same member as FIG. 15 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the mechanism portion is inserted from the front of the slide member 303, the rear outer collar 9 </ b> A of the coupling tool 9 is inserted into the inner collar 303 </ b> B of the slide member 303, and the inner collar 303 </ b> B of the slide member 303 is inserted into the front outer collar of the coupling tool 9. 9B and the rear outer casing 9A are rotatably engaged. A male screw portion 303C is formed at the front portion of the slide member 303, and a rear shaft is detachably screwed to the rear portion of the slide member 303 (not shown).

前軸５０２には、前部に雄ネジ部５０２Ｉと外鍔５０２Ｊが形成されるとともに、外鍔５０２Ｊより長手方向後方に伸びた片５０２Ｋが相対位置に形成される。更に、この片５０２Ｋには雌ネジ部５０２Ｈが形成される。また、摺動部材４１７は、後部に外鍔４１７Ｌが形成され、この外鍔４１７Ｌには半円弧状の貫通孔４１７Ｍが左右の対象位置に形成される。   The front shaft 502 is formed with a male screw portion 502I and an outer flange 502J at the front, and a piece 502K extending in the longitudinal direction rearward from the outer flange 502J is formed at a relative position. Further, a female screw portion 502H is formed on the piece 502K. The sliding member 417 has an outer flange 417L formed at the rear, and a semicircular through hole 417M is formed at the left and right target positions in the outer flange 417L.

前記前軸５０２の片５０２Ｋを摺動部材４１７の貫通孔４１７Ｍに挿通し、前軸５０２に対し摺動部材４１７を長手方向には摺動可能で回動不能に取り付ける。更に、前軸５０２の片５０２Ｋに形成した雌ネジ部５０２Ｈにスライド部材３０３の雄ネジ部３０３Ｃを着脱可能に螺合して取り付ける。また、摺動部材４１７の外鍔４１７Ｌ表面には凹溝４１７Ｎが形成される。更に、シリコンゴム等の軟質材あるいは合成樹脂等の硬質材で構成された把持部材１０１の前部内面に前内鍔１０１Ａが形成される。この把持部材１０１の前内鍔１０１Ａが前記摺動部材４１７の外鍔４１７Ｌ表面に形成された凹溝４１７Ｎに圧入固着されることによって係止され、摺動部材４１７と把持部材１０１が連結されて、振出式のシャープペンシルを構成する。   The piece 502K of the front shaft 502 is inserted into the through hole 417M of the sliding member 417, and the sliding member 417 is slidable in the longitudinal direction with respect to the front shaft 502 and is attached so as not to rotate. Further, the male screw portion 303C of the slide member 303 is detachably screwed and attached to the female screw portion 502H formed on the piece 502K of the front shaft 502. A concave groove 417N is formed on the surface of the outer flange 417L of the sliding member 417. Further, a front inner collar 101A is formed on the inner surface of the front portion of the gripping member 101 made of a soft material such as silicon rubber or a hard material such as synthetic resin. The front inner flange 101A of the gripping member 101 is locked by being press-fitted and fixed in a concave groove 417N formed on the surface of the outer flange 417L of the sliding member 417, and the sliding member 417 and the gripping member 101 are connected. Construct a swing-out mechanical pencil.

前記シャープペンシルで筆記を行うと、芯１５が紙面に押され筆圧を受けるチャック５、締具６、連結具９、スライド部材３０３、先部材８１２、前軸５０２及び内駒２８は停止しているが、スライド部材３０３に対し手で把持された把持部材１０１は前進し、把持部材１０１に連結された摺動部材４１７も前進する。すると、摺動部材４１７に押されて回転部材２１４も前スプリング１１８を圧縮しながら前進する。そして、回転部材２１４の前カム２１４Ａの傾斜面が先部材８１２の前カム８１２Ｄの傾斜面に当接すると、回転部材２１４の前カム２１４Ａの傾斜面が先部材８１２の前カム８１２Ｄの傾斜面の略半分を滑って回転部材２１４が前方に対して右回転する。この回転部材２１４とともに、回転部材２１４に取り付けられた芯ホルダー１６が右回転すると芯１５も右に回転する。この時、芯１５を保持するチャック５も、締具６及び連結具９とともにスライド部材３０３に対して右に回転する。   When writing with the mechanical pencil, the chuck 5, the fastener 6, the connecting tool 9, the slide member 303, the tip member 812, the front shaft 502, and the inner piece 28 are stopped when the core 15 is pressed against the paper surface and receives writing pressure. However, the gripping member 101 gripped by hand with respect to the slide member 303 moves forward, and the sliding member 417 connected to the gripping member 101 also moves forward. Then, it is pushed by the sliding member 417 and the rotating member 214 advances while compressing the front spring 118. When the inclined surface of the front cam 214A of the rotating member 214 comes into contact with the inclined surface of the front cam 812D of the leading member 812, the inclined surface of the front cam 214A of the rotating member 214 corresponds to the inclined surface of the front cam 812D of the leading member 812. The rotating member 214 rotates to the right with respect to the front by slipping about half. When the lead holder 16 attached to the rotating member 214 rotates to the right together with the rotating member 214, the lead 15 also rotates to the right. At this time, the chuck 5 holding the core 15 also rotates to the right with respect to the slide member 303 together with the fastener 6 and the connector 9.

次に、筆記を止め芯１５を紙面より離すと、手で把持された把持部材１０１に対して、前スプリング１１８により前方に付勢された先部材８１２、前軸４０２及びスライド部材２０３が前進する。すると、先部材８１２、前軸５０２及びスライド部材３０３とともに、内駒２８、連結具９、締具６及びチャック５が芯１５とともに前進する。しかし、把持部材１０１とともに摺動部材４１７及び回転部材２１４は停止しているので、内駒２８に形成された後カム２８Ａの傾斜面が回転部材２１４に形成された後カム２１４Ｂの傾斜面に当接し、回転部材２１４の後カム２１４Ｂの傾斜面が内駒２８の後カム２８Ａの傾斜面の略半分を滑って回転部材２１４が前方に対して右回転する。また、スライド部材３０３の外段３０３Ｄが把持部材１０１の後端に当接し、図３７の状態に復帰する。すると、回転部材２１４の後カム２１４Ｂの傾斜面は内駒２８の後カム２８Ａの傾斜面を１つ乗り越えて右隣りの傾斜面に当接され、芯１５は回転部材２１４の後カム２１４Ｂの１つの傾斜面寸法だけ右に回転する。   Next, when writing is stopped and the core 15 is separated from the paper surface, the tip member 812, the front shaft 402, and the slide member 203, which are urged forward by the front spring 118, move forward with respect to the grip member 101 gripped by hand. . Then, the inner piece 28, the connector 9, the fastener 6, and the chuck 5 move forward together with the core 15 together with the tip member 812, the front shaft 502 and the slide member 303. However, since the sliding member 417 and the rotating member 214 are stopped together with the gripping member 101, the inclined surface of the rear cam 28A formed on the inner piece 28 contacts the inclined surface of the rear cam 214B formed on the rotating member 214. In contact with each other, the inclined surface of the rear cam 214B of the rotating member 214 slides substantially half of the inclined surface of the rear cam 28A of the inner piece 28, and the rotating member 214 rotates rightward with respect to the front. Further, the outer stage 303D of the slide member 303 comes into contact with the rear end of the gripping member 101 and returns to the state shown in FIG. Then, the inclined surface of the rear cam 214B of the rotating member 214 passes over the inclined surface of the rear cam 28A of the inner piece 28 and contacts the inclined surface on the right, and the core 15 is one of the rear cam 214B of the rotating member 214. Rotate to the right by one ramp dimension.

この実施例１６の場合には、先部材８１２と内駒２８によりカム部材を構成する。また、把持部材１０１に摺動部材４１７が固定されるので、先部材８１２と前軸５０２あるいは前軸５０２とスライド部材３０３を分離しても、それぞれに内蔵された部材は外れる心配がなく、また、組立性も向上するものである。   In the case of the sixteenth embodiment, the tip member 812 and the inner piece 28 constitute a cam member. In addition, since the sliding member 417 is fixed to the gripping member 101, there is no fear that the members built in the front member 812 and the front shaft 502 or the front shaft 502 and the slide member 303 will be detached from each other. In addition, the assemblability is also improved.

以下、図４０に基づいて本発明における実施例１７のシャープペンシルを説明する。尚、図１と同一部材は同一の符号を付してその説明を省略する。先ず、合成樹脂で構成された把持部材２０１の前方よりスライド部材３を挿入するとともに後方より固定駒４を挿入し、スライド部材３と固定駒４を圧入固着する。このスライド部材３の後端と固定駒４の外段４Ａとの間に把持部材２０１の内鍔２０１Ｂを位置させ、前記把持部材２０１の内鍔２０１Ｂはスライド部材３の後端と固定駒４の外段４Ａの間を適宜前後動可能に構成する。また、スライド部材３のキー溝３Ａに把持部材２０１のキー２０１Ｃが係合し、スライド部材３と把持部材２０１は長手方向には適宜移動可能でかつ回動不能に構成される。更に、把持部材２０１のキー２０１Ｃの一部はスライド部材３の貫通したキー溝３Ａより内方に突出して構成される。また、前スプリング１８により長手方向後方に付勢されたカム部材としての摺動部材１７の突部１７Ｇを把持部材２０１のキー２０１Ｃに当接させる。前記把持部材２０１に後軸２０を着脱可能に螺合して振出式のシャープペンシルを構成する。   Hereinafter, the mechanical pencil of Example 17 according to the present invention will be described with reference to FIG. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the slide member 3 is inserted from the front of the holding member 201 made of synthetic resin, and the fixed piece 4 is inserted from the rear, and the slide member 3 and the fixed piece 4 are press-fitted and fixed. The inner collar 201B of the gripping member 201 is positioned between the rear end of the slide member 3 and the outer stage 4A of the fixed piece 4, and the inner collar 201B of the gripping member 201 is located between the rear end of the slide member 3 and the fixed piece 4. The outer stage 4A is configured to be movable back and forth as appropriate. Further, the key 201C of the gripping member 201 is engaged with the key groove 3A of the slide member 3, and the slide member 3 and the gripping member 201 are configured to be appropriately movable in the longitudinal direction and not rotatable. Further, a part of the key 201 </ b> C of the gripping member 201 is configured to protrude inward from the key groove 3 </ b> A through which the slide member 3 penetrates. Further, the protrusion 17G of the sliding member 17 as a cam member urged rearward in the longitudinal direction by the front spring 18 is brought into contact with the key 201C of the gripping member 201. The rear shaft 20 is detachably screwed to the gripping member 201 to constitute a swing-out type mechanical pencil.

尚、筆記により芯１５を回転する手段は実施例１と同様に行なわれる。   The means for rotating the lead 15 by writing is performed in the same manner as in the first embodiment.

以下、図４１に基づいて本発明における実施例１８のシャープペンシルを説明する。尚、図１９と同一部材は同一の符号を付してその説明を省略する。先ず、芯ガイドパイプ１１３内に芯ホルダー１１６を取り付け、この芯ガイドパイプ１１３を中駒２３０の前部に固定する。前記中駒２３０の外面の相対位置にキー２３０Ａを形成する。この中駒２３０を回転部材４１４の後方から挿入し、中駒２３０のキー２３０Ａを回転部材４１４のキー溝４１４Ｍに係合させることにより、回転部材４１４に対して中駒２３０、芯ガイドパイプ１１３及び芯ホルダー１１６を長手方向には摺動可能で回動不能に構成する。尚、先部材９１２については詳しく説明しないが、先端孔９１２Ｋを太くなった芯ガイドパイプ１１３が挿通可能にするために若干太くしたが、その他は先部材１２と同じである。   Hereinafter, the mechanical pencil of Example 18 according to the present invention will be described with reference to FIG. In addition, the same member as FIG. 19 attaches | subjects the same code | symbol, and abbreviate | omits the description. First, the lead holder 116 is attached in the lead guide pipe 113, and the lead guide pipe 113 is fixed to the front portion of the middle piece 230. A key 230 </ b> A is formed at a relative position on the outer surface of the middle piece 230. The intermediate piece 230 is inserted from the rear of the rotating member 414, and the key 230A of the intermediate piece 230 is engaged with the key groove 414M of the rotating member 414, whereby the intermediate piece 230, the core guide pipe 113, and the rotating member 414 are engaged. The lead holder 116 is configured to be slidable in the longitudinal direction but not rotatable. Although the tip member 912 will not be described in detail, the tip hole 912K is slightly thickened so that the thick core guide pipe 113 can be inserted, but the rest is the same as the tip member 12.

したがって、芯１５が紙面に押圧され、回転部材４１４が前方に対して右回転すると、中駒２３０、芯ガイドパイプ１１３及び芯ホルダー１１６も右に回転するために、芯１５も右に回転する。   Accordingly, when the core 15 is pressed against the paper surface and the rotating member 414 rotates rightward with respect to the front, the core piece 230, the core guide pipe 113, and the core holder 116 also rotate to the right, so the core 15 also rotates to the right.

この実施例１８の場合には、芯ガイドパイプ１１３の先端近くまで芯ホルダー１１６が配置されているので、残芯として排出される芯１５は非常に短くなり、経済的となる。   In the case of the eighteenth embodiment, since the lead holder 116 is disposed close to the tip of the lead guide pipe 113, the lead 15 discharged as the remaining lead is very short and economical.

尚、本発明は、上記実施例に限定されるものではなく、把持部材、前軸、先部材、スライド部材、固定駒、回転部材、摺動部材、連結具といった部材は説明を簡略化するためにそれぞれ１個の部材として図示しているが、それぞれ２個以上の部材を螺合、圧入等により一体化すれば良い。また、回転部材、中駒、芯ガイドパイプに取り付けられる芯ホルダーは、ゴムに限定されるものではなく、金属の板を筒状に形成し、その一部に弾性部を形成したり、あるいは回転部材、中駒あるいは芯ガイドパイプ等の一部に弾性部を形成して一体に構成しても良い。更に、上記実施例は前カムの傾斜面の略中心に後カムの垂直面を位置させて構成しているが、これは説明を明確にするためであって、本発明は、上記実施例に限定されるものではなく、互いに当接する前カムの傾斜面同士が接触して合致した時、互いに当接可能な後カムの接触面同士は離間するとともに傾斜面寸法の略半分程度円周方向にずれて構成され、かつ、前カムの傾斜面と後カムの傾斜面が円周方向に対して逆向きに傾斜して構成されていれば良い。   In addition, this invention is not limited to the said Example, In order to simplify description, members, such as a holding member, a front shaft, a tip member, a slide member, a fixed piece, a rotation member, a sliding member, and a connection tool. However, it is only necessary to integrate two or more members by screwing, press-fitting, or the like. Moreover, the core holder attached to the rotating member, the middle piece, and the core guide pipe is not limited to rubber, but a metal plate is formed in a cylindrical shape, and an elastic portion is formed in a part thereof, or the core holder is rotated. An elastic part may be formed on a part of the member, the middle piece, the core guide pipe, or the like to be integrated. Further, in the above embodiment, the vertical surface of the rear cam is positioned substantially at the center of the inclined surface of the front cam. This is for the sake of clarity, and the present invention is not limited to the above embodiment. It is not limited, and when the inclined surfaces of the front cams that contact each other come into contact with each other, the contact surfaces of the rear cams that can contact each other are separated from each other and are approximately half the inclined surface dimension in the circumferential direction. It is only necessary that the front and rear cam inclined surfaces and the rear cam inclined surface are inclined in opposite directions with respect to the circumferential direction.

筆記によるチャック及び連結具の前後動と連動してスライド部材が前後動することにより芯ホルダーが一方向に回転し、この芯ホルダーの回転に伴い芯を回転させるので、チャックに保持されなくなった短い芯でも回転させることができるシャープペンシルに適用できる。   The lead holder rotates in one direction by moving the slide member back and forth in conjunction with the back and forth movement of the chuck and the coupling tool by writing, and the lead is rotated along with the rotation of the lead holder so that it is not held by the chuck. It can be applied to mechanical pencils that can be rotated even with a core.

１ 把持部材
３ スライド部材
５ チャック
５Ａ チャック５の頭部
６ 締具
９ 連結具
１０ チャックスプリング
１４ 回転部材
１４Ａ 回転部材１４の前カム
１４Ｂ 回転部材１４の後カム
１５ 芯
１６ 芯ホルダー
１０１ 把持部材
１０３ スライド部材
１０５ チャック
１０５Ａ チャック１０５の頭部
１０９ 連結具
１１４ 回転部材
１１４Ａ 回転部材１１４の前カム
１１４Ｂ 回転部材１１４の後カム
１１６ 芯ホルダー
２０１ 把持部材
２０３ スライド部材
２１４ 回転部材
２１４Ａ 回転部材２１４の前カム
２１４Ｂ 回転部材２１４の後カム
３０３ スライド部材
３１４ 回転部材
３１４Ｂ 回転部材３１４の後カム
４１４ 回転部材
４１４Ａ 回転部材４１４の前カム
４１４Ｂ 回転部材４１４の後カム
５１４ 回転部材
５１４Ａ 回転部材５１４の前カム
５１４Ｂ 回転部材５１４の後カム
６１４ 回転部材
６１４Ａ 回転部材６１４の前カム
６１４Ｂ 回転部材６１４の後カム DESCRIPTION OF SYMBOLS 1 Gripping member 3 Slide member 5 Chuck 5A Head of chuck 5 6 Clamping tool 9 Connecting tool 10 Chuck spring 14 Rotating member 14A Front cam of rotating member 14 14B Rear cam of rotating member 14 15 Core 16 Core holder 101 Holding member 103 Slide Member 105 Chuck 105A Chuck 105 head 109 Connector 114 Rotating member 114A Rotating member 114 Front cam 114B Rotating member 114 Rear cam 116 Core holder 201 Gripping member 203 Slide member 214 Rotating member 214A Rotating member 214 front cam 214B Rotating Rear cam of member 214 303 Slide member 314 Rotating member 314B Rear cam of rotating member 314 414 Rotating member 414A Front cam of rotating member 414 414B Rear cam of rotating member 414 514 Rotating member 514A Rotating member 514 Front cam 514B Rotating member 514 rear cam 614 Rotating member 614A Rotating member 614 front cam 614B Rotating member 614 rear cam

Claims (4)

前軸と後軸とを有し、前記前軸に把持部材を固定して取り付け、前記前軸の内部に芯を保持するチャックを配し、前記チャックの頭部に締具を外嵌し、前記チャックをチャックスプリングにより長手方向後方に付勢し、前記チャックに押圧された前記締具を受け止める連結具をスライド部材に対し回動可能に構成し、前記スライド部材の前部に外面から内面に貫通したキー溝を形成し、前記スライド部材のキー溝に前記前軸の前部内面に内方に突出して形成されたキーが係合し、前記把持部材を固定して取り付けた前軸に対してスライド部材が長手方向に移動可能で回動不能に構成するとともに、前記前軸のキーの一部は前記スライド部材のキー溝より内方に突出して構成し、前記前軸の前方に配設した先部材を前記スライド部材に着脱可能に螺合し、前記先部材に前カムと後カムを形成したカム部材を内蔵し、該先部材に前カムと後カムを形成した回転部材を回動可能に内蔵し、前記カム部材の前カムと前記回転部材の前カムを互いに当接可能に構成するとともに、前記カム部材の後カムと前記回転部材の後カムを互いに当接可能に構成し、前記先部材の後部には後端から切り欠かれて伸びたキー溝が相対位置に形成され、前記先部材のキー溝に前記カム部材の相対位置に形成した突部を挿入して前記スライド部材に螺合した該先部材に対し該カム部材を長手方向には移動可能で回動不能に構成し、前記カム部材の突部を前記前軸のキーに当接させ、前記回転部材の前部に芯をガイドする芯ガイドパイプを固定し、前記回転部材に芯を保持する芯ホルダーを取り付け、筆記による前記チャック及び前記連結具の前後動と連動して前記スライド部材が前後動することにより、前記カム部材と前記回転部材が互いに前後に移動し、前記カム部材の前カムと前記回転部材の前カム及び該カム部材の後カムと該回転部材の後カムが前後して互いに当接することにより前記回転部材が一方向に回転し、前記回転部材と連動して前記芯ホルダーを所定角度毎に回転させ、前記芯ホルダーの回転に伴って該芯ホルダーに適宜の力で保持された芯を回転させることを特徴とするシャープペンシル。 It has a front shaft and a rear shaft, a fixing member is fixedly attached to the front shaft, a chuck for holding a core is arranged inside the front shaft, and a fastener is externally fitted to the head of the chuck, biasing the chuck longitudinally rearward by the chuck spring, a connector for receiving the fastener that is pressed against the chuck and configured to be rotatable relative to the sliding member, from the outer surface to the inner surface to the front of the slide member A key groove penetrating is formed, and a key formed by projecting inwardly on the inner surface of the front part of the front shaft is engaged with the key groove of the slide member, and the gripping member is fixedly attached to the front shaft. The slide member is movable in the longitudinal direction and cannot be rotated, and a part of the key of the front shaft protrudes inward from the key groove of the slide member, and is disposed in front of the front shaft. Removable tip member can be attached to and removed from the slide member Screwed, the destination member incorporates a cam member formed with front cam and a rear cam incorporates a rotating member formed with front cam and a rear cam tip member rotatably, the front cam of the cam member wherein with contactable to constitute together the front cam of the rotating member, the cam and each other abutment configured to be able to after the cam and the rotary member after the cam member, cut from the rear end to a rear portion of the destination member and A key groove extending in a missing part is formed at a relative position, and a cam is inserted into the key groove of the tip member and a protrusion formed at the relative position of the cam member is inserted into the slide member and the cam is engaged with the tip member. The member is configured to be movable in the longitudinal direction but not rotatable, the protrusion of the cam member is brought into contact with the key of the front shaft, and a core guide pipe for guiding the core is fixed to the front of the rotating member. attaching a wick holder for holding the core to the rotary member, by writing By the sliding member is moved back and forth in conjunction with the longitudinal movement of the serial chuck and said coupling, said rotary member and said cam member is moved back and forth to each other, the front cam of the rotary member and the front cam of the cam member and said rotary member is rotated in one direction by the cam following the cam and the rotary member after the cam member comes into contact with one another before and after, by rotating the wick holder in conjunction with the rotating member to the predetermined angle , mechanical pencil, characterized in that rotating the core held by the appropriate force to the wick holder with the rotation of the wick holder. 前軸と後軸とを有し、前記前軸に把持部材を固定して取り付け、前記前軸の内部に芯を保持するチャックを配し、前記チャックの頭部に締具を外嵌し、前記チャックをチャックスプリングにより長手方向後方に付勢し、前記チャックに押圧された前記締具を受け止める連結具をスライド部材に対し回動可能に構成し、前記スライド部材の前部に外面から内面に貫通したキー溝を形成し、前記スライド部材のキー溝に前記前軸の前部内面に内方に突出して形成されたキーが係合し、前記把持部材を固定して取り付けた前軸に対してスライド部材が長手方向に移動可能で回動不能に構成するとともに、前記前軸のキーの一部は前記スライド部材のキー溝より内方に突出して構成し、前記前軸の前方に配設した先部材を前記スライド部材に着脱可能に螺合し、前記先部材に前カムと後カムを形成したカム部材を内蔵し、前記先部材に前カムと後カムを形成した回転部材を回動可能に内蔵し、前記カム部材の前カムと前記回転部材の前カムを互いに当接可能に構成するとともに、前記カム部材の後カムと前記回転部材の後カムを互いに当接可能に構成し、前記先部材の後部には後端から切り欠かれて伸びたキー溝が相対位置に形成され、前記先部材のキー溝に前記カム部材の相対位置に形成した突部を挿入して前記スライド部材に螺合した該先部材に対し該カム部材を長手方向には移動可能で回動不能に構成し、前記カム部材の突部を前記前軸のキーに当接させ、回転部材の内方に芯ガイドパイプを固定した中駒を配し、中駒に芯を保持する芯ホルダーを取り付け、回転部材に対して中駒及び芯ホルダーを長手方向には移動可能で回動不能に構成し、筆記による前記チャック及び前記連結具の前後動と連動して前記スライド部材が前後動することにより、前記カム部材と前記回転部材が互いに前後に移動し、前記カム部材の前カムと前記回転部材の前カム及び該カム部材の後カムと該回転部材の後カムが前後して互いに当接することにより前記回転部材が一方向に回転し、前記回転部材と連動して前記芯ホルダーを所定角度毎に回転させ、前記芯ホルダーの回転に伴って該芯ホルダーに適宜の力で保持された芯を回転させることを特徴とするシャープペンシル。 It has a front shaft and a rear shaft, a fixing member is fixedly attached to the front shaft, a chuck for holding a core is arranged inside the front shaft, and a fastener is externally fitted to the head of the chuck, The chuck is urged rearward in the longitudinal direction by a chuck spring, and a connecting member for receiving the fastener pressed by the chuck is configured to be rotatable with respect to the slide member. A key groove penetrating is formed, and a key formed by projecting inwardly on the inner surface of the front part of the front shaft is engaged with the key groove of the slide member, and the gripping member is fixedly attached to the front shaft. The slide member is movable in the longitudinal direction and cannot be rotated, and a part of the key of the front shaft protrudes inward from the key groove of the slide member, and is disposed in front of the front shaft. Removable tip member can be attached to and removed from the slide member A front cam and a rear cam formed on the front member are screwed together, and a rotary member formed with a front cam and a rear cam is rotatably built in the front member. And the front cam of the rotating member are configured to be able to contact each other, and the rear cam of the cam member and the rear cam of the rotating member are configured to be able to contact each other, and the rear portion of the tip member is cut from the rear end. A key groove extending in a missing part is formed at a relative position, and a cam is inserted into the key groove of the tip member and a protrusion formed at the relative position of the cam member is inserted into the slide member and the cam is engaged with the tip member. The member is configured to be movable in the longitudinal direction but not to be rotatable. The protrusion of the cam member is brought into contact with the key of the front shaft, and a center piece having a core guide pipe fixed to the inside of the rotating member is arranged. Attach the lead holder to hold the lead to the middle piece, The wick holder is configured to non-rotatably movable in the longitudinal direction, by the slide member is moved back and forth in conjunction with the longitudinal movement of said chuck and said coupling by writing, the rotating member and the cam member When the front cam of the cam member, the front cam of the rotating member, the rear cam of the cam member, and the rear cam of the rotating member come in contact with each other back and forth, the rotating member rotates in one direction. And a mechanical pencil that rotates the lead holder at a predetermined angle in conjunction with the rotating member and rotates the lead held by the lead holder with an appropriate force as the lead holder rotates. . 前軸と後軸とを有し、前記前軸に把持部材を固定して取り付け、前記前軸の内部に芯を保持するチャックを配し、前記チャックの頭部に締具を外嵌し、前記チャックをチャックスプリングにより長手方向後方に付勢し、前記チャックに押圧された前記締具を受け止める連結具をスライド部材に対し回動可能に構成し、前記スライド部材の前部に外面から内面に貫通したキー溝を形成し、前記スライド部材のキー溝に前記前軸の前部内面に内方に突出して形成されたキーが係合し、前記把持部材を固定して取り付けた前軸に対してスライド部材が長手方向に移動可能で回動不能に構成するとともに、前記前軸のキーの一部は前記スライド部材のキー溝より内方に突出して構成し、前記前軸の前方に配設した先部材を前記スライド部材に着脱可能に螺合し、前記先部材に前カムを形成し、内側部前面に後カムを形成した内駒を前記先部材に圧入固着し、前記先部材と前記内駒によりカム部材を構成し、前記先部材内に前カムと後カムを形成した回転部材を長手方向に摺動可能でかつ回動可能に内蔵し、前記カム部材の前カムと前記回転部材の前カムを互いに当接可能に構成するとともに、前記カム部材の後カムと前記回転部材の後カムを互いに当接可能に構成し、前記回転部材の後方に摺動部材を配設し、前記先部材に後端から切り欠かれて伸びたキー溝を相対位置に形成し、前記先部材のキー溝に摺動部材の相対位置に形成された突部を挿入して、前記先部材に対して前記摺動部材を長手方向に移動可能で回動不能に構成し、前記摺動部材の突部は前記先部材の後部表面より外方に突出し、前記摺動部材の突部を前記前軸のキーに当接させるとともに、前記摺動部材の前端に前記回転部材の後端を当接可能に構成し、前記回転部材に芯を保持する芯ホルダーを取り付け、筆記による前記チャック及び前記連結具の前後動と連動して前記スライド部材が前後動することにより、前記カム部材と前記回転部材が互いに前後に移動し、前記カム部材の前カムと前記回転部材の前カム及び該カム部材の後カムと該回転部材の後カムが前後して互いに当接することにより前記回転部材が一方向に回転し、前記回転部材と連動して前記芯ホルダーを所定角度毎に回転させ、前記芯ホルダーの回転に伴って該芯ホルダーに適宜の力で保持された芯を回転させることを特徴とするシャープペンシル。 It has a front shaft and a rear shaft, a fixing member is fixedly attached to the front shaft, a chuck for holding a core is arranged inside the front shaft, and a fastener is externally fitted to the head of the chuck, The chuck is urged rearward in the longitudinal direction by a chuck spring, and a connecting member for receiving the fastener pressed by the chuck is configured to be rotatable with respect to the slide member. A key groove penetrating is formed, and a key formed by projecting inwardly on the inner surface of the front part of the front shaft is engaged with the key groove of the slide member, and the gripping member is fixedly attached to the front shaft. The slide member is movable in the longitudinal direction and cannot be rotated, and a part of the key of the front shaft protrudes inward from the key groove of the slide member, and is disposed in front of the front shaft. Removable tip member can be attached to and removed from the slide member Screwed, the destination member to form a front cam, pressed fixing the Uchikoma forming a rear cam to the destination member to the inner portion front constitutes the cam member by said frame and said destination member, the destination A rotating member having a front cam and a rear cam formed in the member is slidable and rotatable in the longitudinal direction, and the front cam of the cam member and the front cam of the rotating member are configured to contact each other. In addition, the rear cam of the cam member and the rear cam of the rotating member are configured to be able to contact each other , a sliding member is disposed behind the rotating member, and the tip member is cut out from the rear end to extend. The keyway is formed at a relative position, and the protrusion formed at the relative position of the sliding member is inserted into the keyway of the tip member so that the sliding member can be moved in the longitudinal direction with respect to the tip member. And the protrusion of the sliding member protrudes outward from the rear surface of the tip member. And, is brought into contact with projections of the sliding member to a key of the front shaft, said rear end of said rotary member to the front end of the sliding member configured to be contact, for holding the core to the rotary member A lead holder is attached, and when the slide member moves back and forth in conjunction with the back and forth movement of the chuck and the connecting tool by writing, the cam member and the rotating member move back and forth with each other, and the front cam of the cam member And the front cam of the rotating member and the rear cam of the cam member and the rear cam of the rotating member abut each other so that the rotating member rotates in one direction, and the lead holder interlocks with the rotating member. And a lead held by the lead holder with an appropriate force as the lead holder is rotated. 前軸と後軸とを有し、前記前軸に把持部材を固定して取り付け、前記前軸の内部に芯を保持するチャックを配し、前記チャックの頭部に締具を外嵌し、前記チャックをチャックスプリングにより長手方向後方に付勢し、前記チャックに押圧された前記締具を受け止める連結具をスライド部材に対し回動可能に構成し、前記スライド部材の前部に外面から内面に貫通したキー溝を形成し、前記スライド部材のキー溝に前記前軸の前部内面に内方に突出して形成されたキーが係合し、前記把持部材を固定して取り付けた前軸に対してスライド部材が長手方向に移動可能で回動不能に構成するとともに、前記前軸のキーの一部は前記スライド部材のキー溝より内方に突出して構成し、前記前軸の前方に配設した先部材を前記スライド部材に着脱可能に螺合し、前記先部材に内駒を圧入固着し、前記内駒の内側部前面に前カムを形成するとともに、内側部後面に後カムを形成し、前記内駒と前記先部材によりカム部材を構成し、前記先部材内に後カムを形成した回転部材を長手方向に適宜移動可能でかつ回動可能に内蔵し、前記回転部材に前カムを後面に形成した前カム部材を圧入固着し、前記カム部材の前カムと前記前カム部材の前カムを互いに当接可能に構成するとともに、前記カム部材の後カムと前記回転部材の後カムを互いに当接可能に構成し、前記回転部材の後方に摺動部材を配設し、前記先部材に形成したキー溝に摺動部材に形成した突部を挿入し、前記先部材に対して摺動部材を長手方向に移動可能で回動不能に構成し、前記摺動部材の突部は前記先部材の後部表面より円周方向外方に突出し、前記摺動部材の突部を前記前軸のキーに当接させるとともに、前記摺動部材の前端に前記回転部材の後端を当接可能に構成し、前記回転部材に芯を保持する芯ホルダーを取り付け、筆記による前記チャック及び前記連結具の前後動と連動して前記スライド部材が前後動することにより、前記カム部材と前記回転部材が互いに前後に移動し、前記カム部材の前カムと前記回転部材の前カム及び該カム部材の後カムと該回転部材の後カムが前後して互いに当接することにより前記回転部材が一方向に回転し、前記回転部材と連動して前記芯ホルダーを所定角度毎に回転させ、前記芯ホルダーの回転に伴って該芯ホルダーに適宜の力で保持された芯を回転させることを特徴とするシャープペンシル。 It has a front shaft and a rear shaft, a fixing member is fixedly attached to the front shaft, a chuck for holding a core is arranged inside the front shaft, and a fastener is externally fitted to the head of the chuck, The chuck is urged rearward in the longitudinal direction by a chuck spring, and a connecting member for receiving the fastener pressed by the chuck is configured to be rotatable with respect to the slide member. A key groove penetrating is formed, and a key formed by projecting inwardly on the inner surface of the front part of the front shaft is engaged with the key groove of the slide member, and the gripping member is fixedly attached to the front shaft. The slide member is movable in the longitudinal direction and cannot be rotated, and a part of the key of the front shaft protrudes inward from the key groove of the slide member, and is disposed in front of the front shaft. Removable tip member can be attached to and removed from the slide member Screwed, the inner frame pressed fixed to the target member, to form a front cam inside portion front surface of the inner piece to form a rear cam to the inner portion rear surface, the cam member by said destination member and the inner frame And a rotary member having a rear cam formed in the tip member is built in the longitudinal direction so that it can be appropriately moved and rotated, and a front cam member having a front cam formed on the rear surface is press-fitted and fixed to the rotary member. The front cam of the cam member and the front cam of the front cam member are configured to be able to contact each other, and the rear cam of the cam member and the rear cam of the rotating member are configured to be able to contact each other , A sliding member is arranged at the rear, and a protrusion formed on the sliding member is inserted into a key groove formed on the leading member. The sliding member can be moved in the longitudinal direction with respect to the leading member and cannot be rotated. The protrusion of the sliding member is circumferential from the rear surface of the tip member. Projects toward the outside, is brought into contact with projections of the sliding member to a key of the front axle, the rear end of the rotary member configured to be brought into contact with the front end of the sliding member, said rotary member A lead holder for holding a lead is attached, and the slide member moves back and forth in conjunction with the back and forth movement of the chuck and the connecting tool by writing, whereby the cam member and the rotating member move back and forth with respect to each other. When the front cam of the member, the front cam of the rotating member, and the rear cam of the cam member and the rear cam of the rotating member come in contact with each other, the rotating member rotates in one direction and interlocks with the rotating member. Then, the lead holder is rotated every predetermined angle, and the lead held by the lead holder with an appropriate force is rotated as the lead holder rotates.
JP2011115412A 2011-05-24 2011-05-24 mechanical pencil Expired - Fee Related JP5781830B2 (en)

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