JP2008273009A

JP2008273009A - Shake-out type mechanical pencil

Info

Publication number: JP2008273009A
Application number: JP2007118347A
Authority: JP
Inventors: Mikio Kojima; 幹夫小島
Original assignee: Pilot Corp
Current assignee: Pilot Corp
Priority date: 2007-04-27
Filing date: 2007-04-27
Publication date: 2008-11-13
Anticipated expiration: 2027-04-27
Also published as: JP4993711B2

Abstract

PROBLEM TO BE SOLVED: To provide a shake-out type mechanical pencil hooking a weight body 11 by bending a hook piece 7G inward by turning an operating body 12 to prevent a lead from protruding while being carried, in the shake-out type mechanical pencil capable of advancing a chuck 1 to protrude the lead 9 by the inertial force of the weight body 11 given by shaking a shaft tube 7. SOLUTION: The hook piece 7G having flexibility is formed in the main body of the barrel 7 or the like. By turning the operating body 12, a protuberance 7H of the hook piece 7G is moved to the shallowest part 12B to bend the hook piece 7G inward and thereby to hook the weight body 11. COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、軸筒を振ることによって生じる重量体の慣性力によりチャックを前進させて芯を繰り出す振出式シャープペンシルにおいて、携帯時における振動では芯が繰り出されないようにしたものである。 According to the present invention, in a swing-out type mechanical pencil in which a chuck is advanced by an inertial force of a weight body generated by shaking a shaft cylinder and the core is extended, the core is not extended by vibration when carried.

現在、振ることによって生じる重量体の慣性力により芯を繰り出す振出式シャープペンシルは、筆記状態から持ち変えることなく芯を繰り出せるので非常に好まれている。また、携帯時における振動等では芯が繰り出されないようにした振出式シャープペンシルとしては、軸内に前後に摺動可能に摺動体を内蔵し、該摺動体に固着されたボタンが軸の透孔より突出し、かつ摺動体の前部にばね片部を設けるとともに軸の内部に内面突部を設けて、携帯時には摺動体を前進させてばね片部を内面突部に当接して内方に折曲し、芯タンクを押圧保持するように構成し、筆記時には摺動体を後退させてばね片部を芯タンクより離間して芯タンクが軸方向に摺動自在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）
実公昭６０−２１２７８号公報 Currently, the swing-out mechanical pencil that pulls out the core by the inertial force of the weight body generated by shaking is very preferred because the core can be fed out without changing from the written state. In addition, as a swing-out mechanical pencil that prevents the lead from being pulled out by vibrations when carrying it, a sliding body is built in the shaft so as to be slidable back and forth, and a button fixed to the sliding body is provided through the shaft. Protruding from the hole and provided with a spring piece at the front of the sliding body and an inner surface protrusion inside the shaft, and when carrying, the sliding body is advanced to bring the spring piece into contact with the inner surface protrusion inward A mechanical pencil that is bent and configured to press and hold the lead tank, and the slide body is retracted during writing to separate the spring piece from the lead tank so that the lead tank can slide in the axial direction is known. ing. (See Patent Document 1)
Japanese Utility Model Publication No. 60-21278

しかしながら、上記したシャープペンシルは、軸の透孔よりボタンが突出しているので、外観が損なわれてしまうものであった。しかも、芯タンクを押圧保持した場合にはノブを押圧してチャックを前進させることができず、ノブを押圧して芯を繰り出すこともできなくなってしまうものであった。
本発明は、上記課題を解消する振出式シャープペンシルを提供することを目的とするものである。 However, the mechanical pencil described above has an appearance deteriorated because the button protrudes from the through hole of the shaft. In addition, when the lead tank is pressed and held, the knob cannot be pushed to advance the chuck, and the lead cannot be pushed out by pushing the knob.
An object of the present invention is to provide an oscillating mechanical pencil that solves the above problems.

本発明は、軸筒を振ることにより生じる重量体の慣性力によりチャックを前進させて芯を繰り出す振出式シャープペンシルにおいて、軸筒内に重量体を摺動可能に内蔵するとともに、軸筒等の本体に可撓性を有した係止片を形成し、操作体を回動することにより係止片を内側に撓ませて重量体を係止し、携帯時の芯繰り出しを防止したことを第１の要旨とする。 The present invention relates to a swing-out mechanical pencil that advances a chuck by an inertial force of a weight body generated by shaking a shaft cylinder and feeds a core, and the weight body is slidably incorporated in the shaft cylinder. It is the fact that a flexible locking piece is formed on the main body and the operating body is rotated to bend the locking piece inward to lock the weight body and prevent the core from being pulled out when being carried. It is set as the summary of 1.

また、操作体の係合面に最深部と最浅部を形成し、この操作体の係合面に軸筒の係止片の隆起部を係合したことを第２の要旨とする。 The second aspect is that the deepest part and the shallowest part are formed on the engaging surface of the operating body, and the raised portion of the locking piece of the shaft tube is engaged with the engaging surface of the operating body.

更に、操作体の係合面を、最深部から最浅部までを除々に浅くなるように構成したことを第３の要旨とする。 Furthermore, the third aspect is that the engaging surface of the operating body is configured to gradually become shallower from the deepest part to the shallowest part.

本発明は、携帯時における振動では芯が繰り出されないようにすることができる。しかも、操作体を回動することにより係止片を内側に撓ませて重量体を係止するので、外観を損なうことがない。更に、重量体のみを係止片で係止するので、携帯状態でもノブノックによる芯の繰り出しは行えるという効果が奏せられるものである。 The present invention can prevent the core from being unwound by vibration when carried. In addition, by rotating the operating body, the locking piece is bent inward to lock the weight body, so that the appearance is not impaired. Furthermore, since only the weight body is locked by the locking piece, the lead can be extended by the knob knock even in a portable state.

携帯時に軸筒に振動等の力が加えられても芯が繰り出される恐れがなく、また、携帯状態においてもノブノックによる芯の繰り出しは行える振出式シャープペンシルを実現した。 A swing-out mechanical pencil has been realized that does not cause the core to be extended even when force such as vibration is applied to the shaft cylinder when it is being carried, and can be extended with a knob knock even when carried.

以下、図面に基づいて本発明の振出式シャープペンシルを説明する。図１、図２、図３、図４、図５、図６及び図７は本発明の実施例１を示すもので、チャック１と、コネクター２を介してチャック１に連結された芯タンク３と、チャック１の頭部１Ａに外嵌された締リング４と、締リング４を受け止める連結具５と、連結具５とコネクター２の間に張架されるスプリング６とにより振出式シャープペンシルの機構部を構成する。この機構部の芯タンク３及びコネクター２が挿通可能に軸筒７の前部孔７Ａを構成し、軸筒７の前端と軸筒７の前部に螺合された口金８の内段８Ａにより前記連結具５を挾持する。口金８には芯９を適度の力で保持するゴム等の弾性体で構成された芯ホルダー１０が内蔵されている。 Hereinafter, the swing-out mechanical pencil of the present invention will be described with reference to the drawings. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6 and FIG. 7 show a first embodiment of the present invention, a chuck 1 and a core tank 3 connected to the chuck 1 via a connector 2. And a fastening ring 4 fitted on the head 1A of the chuck 1, a connecting tool 5 for receiving the fastening ring 4, and a spring 6 stretched between the connecting tool 5 and the connector 2. Configure the mechanism. A front hole 7A of the shaft tube 7 is configured so that the core tank 3 and the connector 2 of this mechanism portion can be inserted, and an inner stage 8A of the base 8 screwed to the front end of the shaft tube 7 and the front portion of the shaft tube 7 is formed. The connector 5 is held. The base 8 includes a core holder 10 made of an elastic body such as rubber that holds the core 9 with an appropriate force.

軸筒７の後端より開口されかつ前記前部孔７Ａより太径の内孔７Ｂには、長手方向に伸びたリブ７Ｃを複数形成する。この内孔７Ｂに、黄銅等の金属板を円筒状に丸めて構成した重量体１１が摺動可能に内蔵され、この重量体１１の貫通孔に前記芯タンク３が挿通される。更に、軸筒７は前部７Ｄが細径に構成されるとともに、前部７Ｄより太径で後部７Ｅより細径の中間部７Ｆが形成される。この中間部７Ｆにコ字型に切り欠かれて可撓性を有した係止片７Ｇを長手方向前方に伸ばして形成する。この係止片７Ｇの前端部に前端面は傾斜されかつ後端面は垂直に形成された隆起部７Ｈが構成される。また、軸筒７の後部７Ｅより前方に伸びた突部７Ｉを形成する。 A plurality of ribs 7C extending in the longitudinal direction are formed in the inner hole 7B opened from the rear end of the shaft cylinder 7 and having a diameter larger than that of the front hole 7A. A weight body 11 formed by rolling a metal plate such as brass into a cylindrical shape is slidably incorporated in the inner hole 7B, and the core tank 3 is inserted into the through hole of the weight body 11. Further, the front portion 7D of the shaft cylinder 7 is configured to have a small diameter, and an intermediate portion 7F having a diameter larger than that of the front portion 7D and smaller than that of the rear portion 7E is formed. The intermediate portion 7F is formed by extending a locking piece 7G having a U-shape and having flexibility, extending forward in the longitudinal direction. The front end portion of the locking piece 7G is formed with a raised portion 7H having a front end surface inclined and a rear end surface formed vertically. Further, a protrusion 7I extending forward from the rear portion 7E of the shaft cylinder 7 is formed.

円筒形の操作体１２は、前端に最深部１２Ａと最浅部１２Ｂを円周方向に略９０度離して形成する。しかも、最深部１２Ａから最浅部１２Ｂまでを除々に浅くなるように滑らかな曲面で構成する。更に、最深部１２Ａには隆起部７Ｈを係止するための係止突起１２Ｃが形成され係合面を構成する。また、操作体１２の後端には内孔よりやや大きい曲率半径の切欠部１２Ｄを円周方向に略９０度形成する。 The cylindrical operating body 12 is formed with a deepest portion 12A and a shallowest portion 12B at the front end thereof separated by approximately 90 degrees in the circumferential direction. In addition, the deepest portion 12A to the shallowest portion 12B is configured with a smooth curved surface so as to become gradually shallower. Further, a locking projection 12C for locking the raised portion 7H is formed on the deepest portion 12A to constitute an engaging surface. Further, a notch 12D having a slightly larger curvature radius than the inner hole is formed at the rear end of the operation body 12 in the circumferential direction at approximately 90 degrees.

この操作体１２を軸筒７の前方より被せて、軸筒７の係止片７Ｇに形成した隆起部７Ｈを操作体１２の前方に挿通させ、隆起部７Ｈの後端が操作体１２の内段１２Ｅに係止される。通常の筆記状態では、隆起部７Ｈは操作体１２の最深部１２Ａに位置し、隆起部７Ｈが係止突起１２Ｃにより係止されるとともに係止片７Ｇは重量体１１と離間している。また、前記軸筒７の突部７Ｉが操作体１２の切欠部１２Ｄに挿入され、軸筒７の突部７Ｉは操作体１２の切欠部１２Ｄ内を略９０度回動可能となる。従って、操作体１２は略９０度回動可能に軸筒７の中間部７Ｆに取り付けられる。 The operating body 12 is covered from the front of the shaft cylinder 7, and the raised portion 7H formed on the locking piece 7G of the shaft cylinder 7 is inserted through the front of the operating body 12, and the rear end of the raised portion 7H is the inner part of the operating body 12. Locked to the step 12E. In a normal writing state, the raised portion 7H is positioned at the deepest portion 12A of the operating body 12, the raised portion 7H is locked by the locking projection 12C, and the locking piece 7G is separated from the weight body 11. Further, the protrusion 7I of the shaft cylinder 7 is inserted into the notch 12D of the operating body 12, and the protrusion 7I of the shaft cylinder 7 can be rotated approximately 90 degrees within the notch 12D of the operation body 12. Accordingly, the operating body 12 is attached to the intermediate portion 7F of the shaft cylinder 7 so as to be rotatable by approximately 90 degrees.

更に、軸筒７の前部７Ｄにゴム等の軟質材からなるグリップ１３が外嵌され、グリップ１３の内段１３Ａが軸筒７の段部７Ｊに当接される。従って、グリップ１３の後端と操作体１２の前端とは適宜離間している。 Further, a grip 13 made of a soft material such as rubber is fitted on the front portion 7D of the shaft cylinder 7, and the inner step 13A of the grip 13 is brought into contact with the step portion 7J of the shaft tube 7. Therefore, the rear end of the grip 13 and the front end of the operating body 12 are appropriately separated.

頭冠１４は、上側にクリップ１５を一体に形成するとともに、前部に細径部１４Ａを形成する。この細径部１４Ａの外周面には前記クリップ１５の真下に位置して突起１４Ｂを形成するとともに、細径部１４Ａの両側部に長手方向に伸びた開口窓１４Ｃを対向して形成し、突起１４Ｂが位置する細径部１４Ａが適宜弾性変形可能に構成する。この頭冠１４には、前部内側に芯タンク３の横振れを防止するための内鍔１４Ｄが形成されるとともに、後部内側にはリターンスプリング１６を当接するための段部１４Ｅが形成される。更に、頭冠１４の後部孔１４Ｆの上下には前記開口窓１４Ｃと軸心に対して９０度ずれた位置にキー溝１４Ｇが対向して形成されている。 The head crown 14 is integrally formed with a clip 15 on the upper side, and a small-diameter portion 14A is formed at the front. Projections 14B are formed on the outer peripheral surface of the narrow-diameter portion 14A so as to be positioned immediately below the clip 15, and open windows 14C extending in the longitudinal direction are formed on both sides of the narrow-diameter portion 14A so as to face each other. The small-diameter portion 14A where the 14B is located is configured to be appropriately elastically deformable. The head crown 14 is formed with an inner collar 14D for preventing the side tank 3 from sideways on the inner side of the front part, and a step part 14E for abutting the return spring 16 on the inner side of the rear part. . Further, a key groove 14G is formed above and below the rear hole 14F of the head crown 14 so as to face the opening window 14C at a position shifted by 90 degrees with respect to the axial center.

また、押圧部材１７の前部筒１７Ａ外周面の両側にはそれぞれ突起１７Ｂが形成されるとともに、前部筒１７Ａの上下に開口窓１７Ｃが対向して形成され、突起１７Ｂが位置する前部筒１７Ａが弾性変形可能に構成されている。この押圧部材１７の後部には外鍔部１７Ｄが形成され、該外鍔部１７Ｄの上下には前記突起１７Ｂと軸心に対して９０度ずれた位置に外方に突出したキー１７Ｅがそれぞれ形成される。更に、押圧部材１７の内面には芯挿通口を有する内鍔１７Ｆが形成され、この内鍔１７Ｆの前面が芯タンク３の後端を押圧する押圧面となっている。この押圧部材１７の前部にリターンスプリング１６を外嵌した後、頭冠１４の後方より、頭冠１４のキー溝１４Ｇに押圧部材１７のキー１７Ｅを合わせて挿入し、押圧部材１７の突起１７Ｂを頭冠１４の開口窓１４Ｃに長手方向に摺動可能に遊嵌する。 In addition, protrusions 17B are formed on both sides of the outer peripheral surface of the front cylinder 17A of the pressing member 17, and an opening window 17C is formed on the top and bottom of the front cylinder 17A so that the protrusions 17B are located. 17A is configured to be elastically deformable. An outer flange portion 17D is formed at the rear portion of the pressing member 17, and keys 17E protruding outward are formed above and below the outer flange portion 17D at positions shifted by 90 degrees with respect to the projection 17B and the axis. Is done. Further, an inner flange 17F having a core insertion opening is formed on the inner surface of the pressing member 17, and the front surface of the inner flange 17F serves as a pressing surface that presses the rear end of the core tank 3. After the return spring 16 is externally fitted to the front portion of the pressing member 17, the key 17E of the pressing member 17 is inserted into the key groove 14G of the crown 14 from the rear of the head crown 14, and the protrusion 17B of the pressing member 17 is inserted. Is loosely fitted in the opening window 14C of the crown 14 so as to be slidable in the longitudinal direction.

しかも、前記リターンスプリング１６が頭冠１４の段部１４Ｅと押圧部材１７の外鍔部１７Ｄの間に張架されることにより通常押圧部材１７は長手方向後方に付勢されている。押圧部材１７の前部内孔１７Ｇには芯タンク３の後部が挿入され、芯タンク３の後端と押圧部材１７の押圧面は適宜離間して構成されている。更に、押圧部材１７の後部内孔１７Ｈには消しゴム１８が嵌合されて取り付けられ、かつ消しゴム１８を覆うノブ１９が押圧部材１７の後部外面１７Ｉに嵌合されている。このように組み立てられた頭冠１４が前記軸筒７の後端より挿入され、頭冠１４の突起１４Ｂが軸筒７の後部上面に形成された係止窓７Ｋに嵌め込まれて、頭冠１４が軸筒７に取り付けられる。前記軸筒７の係止窓７Ｋ及び頭冠１４の突起１４Ｂはクリップ１５により隠されるために外観を損なうことはない。また、頭冠１４の内鍔１４Ｄには前記芯タンク３の後部が挿通されるとともに、前記重量体１１はコネクター２の外鍔２Ａと頭冠１４の内鍔１４Ｄにより長手方向の摺動が規制される。 Moreover, the return spring 16 is stretched between the stepped portion 14E of the head crown 14 and the outer flange portion 17D of the pressing member 17, whereby the normal pressing member 17 is urged rearward in the longitudinal direction. The rear portion of the lead tank 3 is inserted into the front inner hole 17G of the pressing member 17, and the rear end of the lead tank 3 and the pressing surface of the pressing member 17 are appropriately separated. Further, an eraser 18 is fitted and attached to the rear inner hole 17H of the pressing member 17, and a knob 19 covering the eraser 18 is fitted to the rear outer surface 17I of the pressing member 17. The crown 14 assembled in this way is inserted from the rear end of the shaft cylinder 7, and the projection 14B of the crown 14 is fitted into a locking window 7K formed on the upper surface of the rear portion of the shaft cylinder 7. Is attached to the shaft cylinder 7. Since the locking window 7K of the shaft cylinder 7 and the projection 14B of the crown 14 are hidden by the clip 15, the appearance is not impaired. The rear portion of the core tank 3 is inserted into the inner collar 14D of the crown 14 and the weight body 11 is restricted from sliding in the longitudinal direction by the outer collar 2A of the connector 2 and the inner collar 14D of the crown 14. Is done.

以上説明した実施例１の振出式シャープペンシルは、軸筒７を振ることにより生じる重量体１１の慣性力によりチャック１を前進させて芯９を繰り出す。また、芯タンク３内の次の芯９を追従させるには、振ることにより生じる重量体１１の慣性力によっても芯９は追従できるが、確実に次の芯９を追従させるためには、ノブ１９を押圧することにより押圧部材１７の内鍔１７Ｆが芯タンク３の後端を押圧し、芯タンク３及びチャック１が前進することにより口金８内の短くなった残芯を排出するとともに、次の芯９を口金８の先端より突出させるものである。 The swing-out type mechanical pencil of the first embodiment described above advances the chuck 9 by moving the chuck 9 forward by the inertial force of the weight body 11 generated by shaking the shaft cylinder 7. Further, in order to follow the next lead 9 in the lead tank 3, the lead 9 can follow the inertial force of the weight body 11 generated by shaking, but in order to surely follow the next lead 9, the knob 9 By pressing 19, the inner flange 17F of the pressing member 17 presses the rear end of the lead tank 3, and when the lead tank 3 and the chuck 1 move forward, the shortened remaining lead in the base 8 is discharged. The core 9 is projected from the tip of the base 8.

携帯する場合には、操作体１２を９０度回動して係止片７Ｇの隆起部７Ｈを最深部１２Ａから最浅部１２Ｂに移動させることにより、係止片７Ｇが内方に撓んで係止片７Ｇの前端が重量体１１に圧接され図８及び図９に示した状態となる。この状態では、重量体１１は係止片７Ｇに係止され軸筒７を振っても重量体１１は移動することができない。従って、携帯時に軸筒７が振動させられても芯９は繰り出される恐れはない。しかし、ノブ１９をノックすれば芯タンク３及びチャック１が前進して芯９を繰り出したり、次の芯９を追従させることができる。 In the case of carrying, the operating piece 12 is rotated 90 degrees to move the raised portion 7H of the locking piece 7G from the deepest portion 12A to the shallowest portion 12B, whereby the locking piece 7G is bent inward and engaged. The front end of the stop piece 7G is brought into pressure contact with the weight body 11 to be in the state shown in FIGS. In this state, the weight body 11 is locked to the locking piece 7G, and the weight body 11 cannot move even if the shaft cylinder 7 is shaken. Therefore, even if the shaft cylinder 7 is vibrated at the time of carrying, the core 9 is not likely to be drawn out. However, if the knob 19 is knocked, the lead tank 3 and the chuck 1 can move forward to feed the lead 9 or to follow the next lead 9.

携帯状態から筆記状態に戻す場合には、操作体１２を逆に９０度回動して係止片７Ｇの隆起部７Ｈを最浅部１２Ｂから最深部１２Ａに移動させることにより、係止片７Ｇの前端が重量体１１から離間し図１及び図２に示した筆記状態となる。 When returning from the portable state to the writing state, the operating body 12 is rotated 90 degrees in the reverse direction to move the raised portion 7H of the locking piece 7G from the shallowest portion 12B to the deepest portion 12A. 1 is separated from the weight body 11 and the writing state shown in FIGS. 1 and 2 is obtained.

図１０及び図１１は本発明の実施例２の振出式シャープペンシルを示したものである。尚、図１と同一の部材は同一の符号を付してその説明は省略する。軸筒１０７は、細径に形成された前部１０７Ｄと、やや太径に形成された後部１０７Ｅにより構成される。この後部１０７Ｅにコ字型に切り欠かれて可撓性を有した係止片１０７Ｇを長手方向前方に伸ばして形成する。この係止片１０７Ｇの前端部に隆起部１０７Ｈが構成される。 10 and 11 show a swing-out mechanical pencil according to the second embodiment of the present invention. The same members as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. The shaft cylinder 107 includes a front portion 107D formed with a small diameter and a rear portion 107E formed with a slightly large diameter. The rear portion 107E is formed by extending a locking piece 107G which is cut out in a U-shape and has flexibility in the longitudinal direction. A raised portion 107H is formed at the front end portion of the locking piece 107G.

円筒形の操作体１１２は、前部に略９０度に渡って切欠部１１２Ｄが形成され、この切欠部１１２Ｄの端に最深部１１２Ａと最浅部１１２Ｂを形成する。しかも、最深部１１２Ａから最浅部１１２Ｂまでの切欠部１１２Ｄの内面を除々に浅くなるように滑らかな曲面で構成し係合面を形成する。更に、最深部１１２Ａには隆起部１０７Ｈを係止するための係止突起１１２Ｃが形成される。 The cylindrical operating body 112 has a notch 112D formed at approximately 90 degrees at the front, and the deepest part 112A and the shallowest part 112B are formed at the ends of the notch 112D. In addition, the inner surface of the cutout portion 112D from the deepest portion 112A to the shallowest portion 112B is formed of a smooth curved surface so as to gradually become shallow, and an engagement surface is formed. Furthermore, a locking projection 112C for locking the raised portion 107H is formed in the deepest portion 112A.

この操作体１１２を軸筒１０７の後方より被せて、操作体１１２の切欠部１１２Ｄに係止片１０７Ｇの隆起部１０７Ｈを挿入する。通常の筆記状態では、隆起部１０７Ｈは操作体１１２の切欠部１１２Ｄの最深部１１２Ａに位置し、係止片１０７Ｇは重量体１１と離間している。 The operating body 112 is covered from the rear of the shaft cylinder 107, and the raised portion 107H of the locking piece 107G is inserted into the notch 112D of the operating body 112. In a normal writing state, the raised portion 107 H is located at the deepest portion 112 A of the notch 112 D of the operation body 112, and the locking piece 107 G is separated from the weight body 11.

更に、軸筒１０７に鞘２０を着脱可能に螺合し、係止片１０７Ｇの隆起部１０７Ｈと鞘２０の前端の間に操作体１１２が回動可能に取り付けられる。ただし、軸筒１０７の隆起部１０７Ｈは操作体１１２の切欠部１１２Ｄ内、つまり略９０度の範囲で回動範囲が規制される。 Further, the sheath 20 is detachably screwed onto the shaft tube 107, and the operating body 112 is rotatably attached between the raised portion 107H of the locking piece 107G and the front end of the sheath 20. However, the rotation range of the raised portion 107H of the shaft tube 107 is restricted within the cutout portion 112D of the operating body 112, that is, within a range of approximately 90 degrees.

この軸筒１０７の前部１０７Ｄにゴム等の軟質材からなるグリップ１３が外嵌され、グリップ１３の内段１３Ａが軸筒１０７の段部１０７Ｊに当接される。従って、グリップ１３の後端と操作体１１２の前端とは適宜離間している。 A grip 13 made of a soft material such as rubber is externally fitted to the front portion 107D of the shaft tube 107, and the inner step 13A of the grip 13 is brought into contact with the step portion 107J of the shaft tube 107. Therefore, the rear end of the grip 13 and the front end of the operation body 112 are appropriately separated from each other.

以上説明した実施例２の振出式シャープペンシルにおいて携帯する場合には、操作体１１２を９０度回動して係止片１０７Ｇの隆起部１０７Ｈを最深部１１２Ａから最浅部１１２Ｂに移動させることにより、係止片１０７Ｇが内方に撓んで係止片１０７Ｇの前端が重量体１１に圧接され図１２及び図１３に示した状態となる。この状態では、重量体１１は係止片１０７Ｇに係止され軸筒１０７を振っても重量体１１は移動することができない。従って、携帯時に軸筒１０７が振動させられても芯９は繰り出される恐れはない。しかし、ノブ１９をノックすれば芯タンク３及びチャック１が前進して芯９を繰り出したり、次の芯９を追従させることができる。 When carrying in the swing-out type mechanical pencil of Example 2 demonstrated above, the operating body 112 is rotated 90 degree | times, and the protruding part 107H of the locking piece 107G is moved from the deepest part 112A to the shallowest part 112B. The locking piece 107G is bent inward, and the front end of the locking piece 107G is brought into pressure contact with the weight body 11, resulting in the state shown in FIGS. In this state, the weight body 11 is locked to the locking piece 107G, and the weight body 11 cannot move even if the shaft cylinder 107 is shaken. Therefore, even if the shaft tube 107 is vibrated when being carried, the core 9 is not likely to be unwound. However, if the knob 19 is knocked, the lead tank 3 and the chuck 1 can move forward to feed the lead 9 or to follow the next lead 9.

携帯状態から筆記状態に戻す場合には、操作体１１２を逆に９０度回動して係止片１０７Ｇの隆起部１０７Ｈを最浅部１１２Ｂから最深部１１２Ａに移動させることにより、係止片１０７Ｇの前端が重量体１１から離間し図１０及び図１１に示した筆記状態となる。 When returning from the portable state to the writing state, the operating body 112 is rotated 90 degrees in the reverse direction to move the raised portion 107H of the locking piece 107G from the shallowest portion 112B to the deepest portion 112A, thereby locking the locking piece 107G. Is separated from the weight body 11 and the writing state shown in FIGS. 10 and 11 is obtained.

図１４及び図１５は、本発明の実施例３の振出式シャープペンシルを示したものである。尚、図１と同一の部材は同一符号を付してその説明は省略する。軸筒２０７は、細径に形成された前部２０７Ｄと、やや太径に形成された中間部２０７Ｆと、中間部２０７Ｆより細径に構成された後部２０７Ｅにより構成される。この後部２０７Ｅにコ字型に切欠かれて可撓性を有した係止片２０７Ｇを長手方向後方に伸ばして形成する。この係止片２０７Ｇの後端部に隆起部２０７Ｈが構成される。また、軸筒２０７の中間部２０７Ｆより後方に伸びた突部２０７Ｉを形成する。 14 and 15 show a swing-out mechanical pencil according to a third embodiment of the present invention. The same members as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. The shaft cylinder 207 includes a front part 207D formed with a small diameter, an intermediate part 207F formed with a slightly larger diameter, and a rear part 207E configured with a smaller diameter than the intermediate part 207F. A locking piece 207G that is cut into a U-shape and has flexibility in the rear portion 207E is formed to extend rearward in the longitudinal direction. A raised portion 207H is formed at the rear end of the locking piece 207G. Further, a protrusion 207I extending rearward from the intermediate portion 207F of the shaft cylinder 207 is formed.

円筒形の操作体２１２は、後端に最深部２１２Ａと最浅部２１２Ｂを対向して形成する。しかも、最深部２１２Ａから最浅部２１２Ｂまでを除々に浅くなるように滑らかな曲面で構成し、係合面を形成する。更に、最深部２１２Ａには隆起部２０７Ｈを係止するための係止突起２１２Ｃを形成する。また、操作体２１２の前端には内径よりやや大きい曲率半径の切欠部２１２Ｄが円周方向に９０度形成する。 The cylindrical operation body 212 is formed with the deepest portion 212A and the shallowest portion 212B facing each other at the rear end. In addition, the deepest portion 212A to the shallowest portion 212B are formed with a smooth curved surface so as to gradually become shallow, and an engagement surface is formed. Further, a locking projection 212C for locking the raised portion 207H is formed in the deepest portion 212A. Further, a notch 212D having a slightly larger radius of curvature than the inner diameter is formed at the front end of the operation body 212 by 90 degrees in the circumferential direction.

この操作体２１２を軸筒２０７の後方より被せ、操作体２１２の隆起部２０７Ｈを内段２１２Ｅに係合させる。また、軸筒２０７の突部２０７Ｉを操作体２１２の切欠部２１２Ｄに挿入する。従って、操作体２１２は軸筒２０７の中間部２０７Ｆと隆起部２０７Ｈの間に突部２０７Ｉが切欠部２１２Ｄ内を略９０度回動可能に遊嵌される。通常の筆記状態では、隆起部２０７Ｈは操作体２１２の最深部２１２Ａに位置し、隆起部２０７Ｈが係止突起２１２Ｃにより係止されるとともに係止片２０７Ｇは重量体１１と離間している。更に、軸筒２０７に鞘２０を着脱可能に螺合する。 The operating body 212 is covered from the rear of the shaft cylinder 207, and the raised portion 207H of the operating body 212 is engaged with the inner stage 212E. Further, the protrusion 207 I of the shaft cylinder 207 is inserted into the notch 212 D of the operating body 212. Therefore, the operating body 212 is loosely fitted between the intermediate portion 207F of the shaft cylinder 207 and the raised portion 207H so that the projection 207I can rotate approximately 90 degrees in the notch 212D. In a normal writing state, the raised portion 207H is positioned at the deepest portion 212A of the operation body 212, the raised portion 207H is locked by the locking protrusion 212C, and the locking piece 207G is separated from the weight body 11. Further, the sheath 20 is detachably screwed onto the shaft cylinder 207.

この軸筒２０７の前部２０７Ｄにゴム等の軟質材からなるグリップ１３が外嵌され、グリップ１３の内段１３Ａが軸筒２０７の段部２０７Ｊに当接される。従って、グリップ１３の後端と操作体２１２の前端とは適宜離間している。 The grip 13 made of a soft material such as rubber is fitted on the front portion 207D of the shaft cylinder 207, and the inner step 13A of the grip 13 is brought into contact with the step portion 207J of the shaft tube 207. Therefore, the rear end of the grip 13 and the front end of the operation body 212 are appropriately separated.

以上説明した実施例３の振出式シャープペンシルにおいて携帯する場合には、操作体２１２を回動して係止片２０７Ｇの隆起部２０７Ｈを最深部２１２Ａから最浅部２１２Ｂに移動させることにより、係止片２０７Ｇが内方に撓んで係止片２０７Ｇの後端が重量体１１に圧接され図１６及び図１７に示した状態となる。この状態では、重量体１１は係止片２０７Ｇに係止され軸筒２０７を振っても重量体１１は移動することができない。従って、携帯時に軸筒２０７が振動させられても芯９は繰り出される恐れはない。しかし、ノブ１９をノックすれば芯タンク３及びチャック１が前進して芯９を繰り出したり、次の芯９を追従させることができる。 In the case of carrying with the swing-out mechanical pencil of the third embodiment described above, the operating body 212 is rotated to move the raised portion 207H of the locking piece 207G from the deepest portion 212A to the shallowest portion 212B. The stop piece 207G bends inward, and the rear end of the stop piece 207G is pressed against the weight body 11, resulting in the state shown in FIGS. In this state, the weight body 11 is locked to the locking piece 207G, and the weight body 11 cannot move even if the shaft cylinder 207 is shaken. Therefore, even if the shaft cylinder 207 is vibrated at the time of carrying, the core 9 is not likely to be drawn out. However, if the knob 19 is knocked, the lead tank 3 and the chuck 1 can move forward to feed the lead 9 or to follow the next lead 9.

携帯状態から筆記状態に戻す場合には、操作体２１２を逆に回動して係止片２０７Ｇの隆起部２０７Ｈを最浅部２１２Ｂから最深部２１２Ａに移動させることにより、係止片２０７Ｇの後端が重量体１１から離間し図１４及び図１５に示した筆記状態となる。 When returning from the carrying state to the writing state, the operating body 212 is rotated in the reverse direction to move the raised portion 207H of the locking piece 207G from the shallowest portion 212B to the deepest portion 212A, thereby The end is separated from the weight body 11 and the writing state shown in FIGS. 14 and 15 is obtained.

この実施例３の場合には、操作体２１２は軸筒２０７の中間部２０７Ｆと隆起部２０７Ｈの間に取り付けられているので、軸筒２０７から鞘２０を外した場合でも操作体２１２が外れてしまう恐れはない。 In the case of the third embodiment, since the operating body 212 is attached between the intermediate portion 207F and the raised portion 207H of the shaft cylinder 207, the operating body 212 is detached even when the sheath 20 is removed from the shaft cylinder 207. There is no fear of it.

尚、上記した実施例はいずれも係止片が軸筒に設けられているが、本発明は上記実施例に限定されるものではなく、係止片を形成する部材としては振出式シャープペンシルの本体を構成する種々の部材が対象となる。例えば、軸筒に連結される鞘や、軸筒や鞘に取り付けられる金輪や内軸等の本体を構成する部材に係止片を形成しても良い。また、係止片はコ字型に切り欠かれたものに限定されるものではなく、可撓性を有していれば種々の形状が利用できるものである。 In any of the above-described embodiments, the locking piece is provided on the shaft tube. However, the present invention is not limited to the above-described embodiment, and the member that forms the locking piece is a swing-out mechanical pencil. Various members constituting the main body are targeted. For example, you may form a latching piece in the members which comprise main bodies, such as the sheath connected with a shaft cylinder, the metal ring attached to a shaft cylinder, a sheath, and an inner shaft. Further, the locking piece is not limited to the U-shaped notch, and various shapes can be used as long as it has flexibility.

また、上記実施例は、重量体１１が金属板を円筒状に丸めて構成されているが、重量体は金属製の線材を巻回して円筒状に構成したり、金属を切削加工により円筒状に構成することも可能である。 In the above embodiment, the weight body 11 is formed by rolling a metal plate into a cylindrical shape. However, the weight body is formed into a cylindrical shape by winding a metal wire, or the metal is cylindrical by cutting. It is also possible to configure.

操作体を回動することにより、軸筒の係止片を撓ませて重量体を係止する。従って、携帯時に不必要な芯繰出が行われる恐れがない。また、この携帯状態でもノブをノックすれば芯が繰り出せるので、急に筆記する場合が生じてもノブノックにより使用することができる。 By rotating the operating body, the locking piece of the shaft tube is bent to lock the weight body. Therefore, there is no fear that unnecessary lead-out will be performed at the time of carrying. Even in this portable state, if the knob is knocked, the lead can be extended, so that even if there is a sudden writing, the knob can be used.

本発明の実施例１の振出式シャープペンシルにおける筆記状態を示す断面図である。（実施例１）It is sectional drawing which shows the writing state in the swing-out type mechanical pencil of Example 1 of this invention. Example 1 図１のＡ−Ａ線を示す拡大断面図である。（実施例１）It is an expanded sectional view which shows the AA line of FIG. Example 1 図１のＢ−Ｂ線を示す拡大断面図である。（実施例１）It is an expanded sectional view which shows the BB line of FIG. Example 1 図１のＣ−Ｃ線を示す拡大断面図である。（実施例１）It is an expanded sectional view which shows the CC line of FIG. Example 1 図１のＤ−Ｄ線を示す拡大断面図である。（実施例１）It is an expanded sectional view which shows the DD line | wire of FIG. Example 1 図１のＥ−Ｅ線を示す拡大断面図である。（実施例１）It is an expanded sectional view which shows the EE line | wire of FIG. Example 1 本発明の実施例１の軸筒を示す主要部拡大平面図である。（実施例１）It is a principal part enlarged plan view which shows the axial cylinder of Example 1 of this invention. Example 1 本発明の実施例１の振出式シャープペンシルにおける携帯状態を示す主要部拡大断面図である。（実施例１）It is a principal part expanded sectional view which shows the carrying state in the swing-out type mechanical pencil of Example 1 of this invention. Example 1 図８のＡ−Ａ線を示す拡大断面図である。（実施例１）It is an expanded sectional view which shows the AA line of FIG. Example 1 本発明の実施例２の振出式シャープペンシルにおける筆記状態を示す断面図である。（実施例２）It is sectional drawing which shows the writing state in the swing-out type mechanical pencil of Example 2 of this invention. (Example 2) 図１０のＡ−Ａ線を示す拡大断面図である。（実施例２）It is an expanded sectional view which shows the AA line of FIG. (Example 2) 本発明の実施例２の振出式シャープペンシルにおける携帯状態を示す主要部拡大断面図である。（実施例２）It is a principal part expanded sectional view which shows the portable state in the swing-out type mechanical pencil of Example 2 of this invention. (Example 2) 図１２のＡ−Ａ線を示す拡大断面図である。（実施例２）It is an expanded sectional view which shows the AA line of FIG. (Example 2) 本発明の実施例３の振出式シャープペンシルにおける筆記状態を示す断面図である。（実施例３）It is sectional drawing which shows the writing state in the swing-out type mechanical pencil of Example 3 of this invention. (Example 3) 図１４のＡ−Ａ線を示す拡大断面図である。（実施例３）It is an expanded sectional view which shows the AA line of FIG. (Example 3) 本発明の実施例３の振出式シャープペンシルにおける携帯状態を示す主要部拡大断面図である。（実施例３）It is a principal part expanded sectional view which shows the portable state in the swing-out type mechanical pencil of Example 3 of this invention. (Example 3) 図１６のＡ−Ａ線を示す拡大断面図である。（実施例３）It is an expanded sectional view which shows the AA line of FIG. (Example 3)

Explanation of symbols

１チャック
７軸筒
７Ｇ軸筒７の係止片
７Ｈ軸筒７の隆起部
９芯
１１重量体
１２操作体
１２Ａ操作体１２の最深部
１２Ｂ操作体１２の最浅部
１０７軸筒
１０７Ｇ軸筒１０７の係止片
１０７Ｈ軸筒１０７の隆起部
１１２操作体
１１２Ａ操作体１１２の最深部
１１２Ｂ操作体１１２の最浅部
２０７軸筒
２０７Ｇ軸筒２０７の係止片
２０７Ｈ軸筒２０７の隆起部
２１２操作体
２１２Ａ軸筒２１２の最深部
２１２Ｂ軸筒２１２の最浅部 DESCRIPTION OF SYMBOLS 1 Chuck 7 Shaft cylinder 7G Locking piece of shaft cylinder 7H Raised part of shaft cylinder 7 9 Core 11 Weight body 12 Operating body 12A The deepest part of operating body 12B The shallowest part of operating body 12 107 Shaft cylinder 107G Shaft cylinder 107 Locking piece 107H Raised portion of shaft cylinder 107 112 Operating body 112A Deepest part of operating body 112 112B Shallowest part of operating body 112 207 Shaft cylinder 207G Locking piece of shaft cylinder 207 207 Raised section of shaft cylinder 207 212 Operating body 212A The deepest part of the shaft tube 212 212B The shallowest part of the shaft tube 212

Claims

In a swing-out mechanical pencil that pulls out the core by advancing the chuck by the inertial force of the weight body generated by shaking the shaft cylinder, the weight body is slidably incorporated in the shaft cylinder and flexible to the main body such as the shaft cylinder. A swing-out type mechanical pencil that forms a locking piece having the properties and turns the operating body to bend the locking piece inward to lock the weight body, thereby preventing the lead from being pulled out when being carried.

2. The swing-out type according to claim 1, wherein a deepest portion and a shallowest portion are formed on the engaging surface of the operating body, and a raised portion of the locking piece of the shaft tube is engaged with the engaging surface of the operating body. mechanical pencil.

3. The swing-out mechanical pencil according to claim 2, wherein the engaging surface of the operating body is configured to gradually become shallower from the deepest part to the shallowest part.