JP7373393B2 - Appearance mechanism - Google Patents
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- JP7373393B2 JP7373393B2 JP2019237041A JP2019237041A JP7373393B2 JP 7373393 B2 JP7373393 B2 JP 7373393B2 JP 2019237041 A JP2019237041 A JP 2019237041A JP 2019237041 A JP2019237041 A JP 2019237041A JP 7373393 B2 JP7373393 B2 JP 7373393B2
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Description
本発明は、出没機構に関する。 The present invention relates to a retraction mechanism.
各色に対応した複数の筆記用ペン先を有し、使用者のノック動作により、複数の筆記用ペン先のうちのいずれかを、軸筒の前端の開口部から選択的に突出させることが可能なノック式筆記具が知られている。特許文献１には、軸筒と、軸筒内に軸方向にスライド可能に対向収容される２本のボールペンレフィルを備えた筆記具が開示されている。この筆記具では、ボールペンレフィルの後端には、ノック部材が差し込み固定されており、ボールペンレフィル及びノック部材は、コイルばねにより後端方向に付勢されている。使用者が指でノック部材をコイルばねの付勢力に抗して先端方向に移動させると、ボールペンレフィルが先端方向に移動し、ボールペンレフィルのペン先が先端孔より外部に突出する。 It has multiple writing nibs corresponding to each color, and by the user's knocking motion, one of the multiple writing nibs can be selectively protruded from the opening at the front end of the barrel. Knock type writing instruments are known. Patent Document 1 discloses a writing instrument that includes a barrel and two ballpoint pen refills that are slidably accommodated in the barrel and face each other in the axial direction. In this writing instrument, a knocking member is inserted and fixed to the rear end of the ballpoint pen refill, and the ballpoint pen refill and the knocking member are urged toward the rear end by a coil spring. When the user moves the knocking member with his/her finger toward the tip against the biasing force of the coil spring, the ballpoint pen refill moves toward the tip, and the tip of the ballpoint pen refill protrudes outside from the tip hole.
従来のノック式筆記具においては、ペン先等の先端部材を出没させるためには、使用者が筆記具を持ち替えてノック部材を操作する必要があり、手間がかかっていた。したがって、使用者が持ち替えることなく先端部材を出没させることが可能な出没機構が望まれていた。 In conventional knock-type writing instruments, in order to make the tip member such as a pen tip appear and retract, the user needs to change the writing instrument and operate the knock member, which takes time and effort. Therefore, there has been a desire for a mechanism that allows the tip member to move in and out without the user having to change his/her grip.
本発明は、以上の点を考慮してなされたものであり、使用者が持ち替えることなく先端部材を出没させることが可能な出没機構を提供することを目的とする。 The present invention has been made in consideration of the above points, and an object of the present invention is to provide a mechanism that allows a user to project and retract a tip member without changing the user's grip.
本発明による出没機構は、
長手方向に延びる中心軸線を有し、前記長手方向の前端に開口部を有する軸筒と、
複数の出没部材と、
前記中心軸線周りに回転することにより、各出没部材の先端部を前記開口部から順に出没させる回転部材と、
前後に移動することにより、前記回転部材を前記中心軸線周りに回転させる重量体と、を備える。
The appearance mechanism according to the present invention includes:
a shaft cylinder having a central axis extending in the longitudinal direction and having an opening at the front end in the longitudinal direction;
Multiple appearing parts,
a rotating member that rotates around the central axis to cause the tip of each protruding and retracting member to sequentially protrude and retract from the opening;
A weight body that rotates the rotating member around the central axis by moving back and forth is provided.
本発明による出没機構において、
前記回転部材は、軸方向に対して傾斜するとともに周方向に対して前側に傾斜した前方傾斜面を有し、
前記重量体は、軸方向に対して傾斜するとともに周方向に対して後側に傾斜した後方傾斜面を有し、
前記後方傾斜面が後方に移動して前記前方傾斜面を押圧することにより、前記回転部材が回転してもよい。
In the retraction mechanism according to the present invention,
The rotating member has a front inclined surface that is inclined with respect to the axial direction and inclined forward with respect to the circumferential direction,
The weight body has a rear inclined surface that is inclined with respect to the axial direction and rearward with respect to the circumferential direction,
The rotating member may be rotated by the rear inclined surface moving rearward and pressing the front inclined surface.
本発明による出没機構において、
前記回転部材は、外面に第１カム溝を有し、
前記出没部材は、前記第１カム溝に係合する第１係合部を有してもよい。
In the retraction mechanism according to the present invention,
The rotating member has a first cam groove on the outer surface,
The retractable member may have a first engaging portion that engages with the first cam groove.
本発明による出没機構において、
前記第１カム溝は、周方向の一方側へ向かうにつれて前方へ向かうように軸方向及び周方向に対して傾斜して延びる第１部分と、前記第１部分と連通し、周方向の一方側へ向かうにつれて後方へ向かうように軸方向及び周方向に対して傾斜して延びる第２部分とを含み、
前記第１部分及び前記第２部分は、周方向に交互に配置されていてもよい。
In the retraction mechanism according to the present invention,
The first cam groove communicates with the first portion and extends obliquely with respect to the axial and circumferential directions so as to move forward toward one side in the circumferential direction. a second portion extending obliquely with respect to the axial direction and the circumferential direction so as to go rearward as the second portion goes toward the second portion;
The first portion and the second portion may be arranged alternately in the circumferential direction.
本発明による出没機構において、
前記軸筒に対して周方向及び軸方向の移動が規制された固定カム部材をさらに備え、
前記固定カム部材は、周方向に配列された複数の第２カム溝を内面に有し、
前記重量体は、前記第２カム溝に係合する第２係合部を有してもよい。
In the retraction mechanism according to the present invention,
further comprising a fixed cam member whose movement in the circumferential direction and the axial direction is restricted with respect to the shaft cylinder,
The fixed cam member has a plurality of second cam grooves arranged in the circumferential direction on the inner surface,
The weight body may have a second engaging portion that engages with the second cam groove.
本発明による出没機構において、
前記出没部材は、筆記用先端部材を含んでもよい。
In the retraction mechanism according to the present invention,
The retractable member may include a writing tip member.
本発明による出没機構において、
前記出没部材は、工具用先端部材を含んでもよい。
In the retraction mechanism according to the present invention,
The retractable member may include a tool tip member.
本発明による出没機構において、
前記出没部材は、カトラリー用先端部材を含んでもよい。
In the retraction mechanism according to the present invention,
The retractable member may include a cutlery tip member.
本発明によれば、使用者が持ち替えることなく先端部材を出没させることが可能な出没機構を提供することができる。 Advantageous Effects of Invention According to the present invention, it is possible to provide a retraction mechanism that allows a user to retract and retract a tip member without changing the user's grip.
以下、図面を参照して本発明の一実施の形態について説明する。なお、本明細書に添付する図面においては、図示と理解のしやすさの便宜上、適宜縮尺および縦横の寸法比等を、実物のそれらから変更し誇張してある。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In addition, in the drawings attached to this specification, for convenience of illustration and ease of understanding, the scale, vertical and horizontal dimension ratios, etc. are appropriately changed and exaggerated from those of the actual drawings.
また、本明細書において用いる、形状や幾何学的条件ならびにそれらの程度を特定する、例えば、「平行」、「直交」、「同一」等の用語や長さや角度の値等については、厳密な意味に縛られることなく、同様の機能を期待し得る程度の範囲を含めて解釈することとする。 In addition, terms such as "parallel," "perpendicular," and "identical," and values of length and angle used in this specification that specify shapes, geometric conditions, and their degree, etc., are strictly The term shall be interpreted to include the extent to which similar functions can be expected, without being bound by meaning.
本実施形態では、出没機構２０が筆記具１０に組み込まれた例について説明するが、これに限られず、出没機構２０は、複数の出没部材を出没させる他の装置にも適用され得る。本明細書では、筆記具１０の中心軸線Ａが延びる方向（長手方向、縦断面図における上下方向）を軸方向ｄａ、軸方向ｄａと直交する方向を径方向ｄｒ、中心軸線Ａ周りの円周に沿った方向を周方向ｄｃとする。また、軸方向ｄａに沿って、筆記する際に紙面等の被筆記面に近接する側を前方とし、被筆記面から離間する側を後方とする。すなわち、ペン先側が前方であり、ペン先と反対側が後方である。これにともなって、軸方向ｄａと平行な方向を前後方向と呼ぶこともある。 In the present embodiment, an example will be described in which the projecting/retracting mechanism 20 is incorporated into the writing instrument 10, but the projecting/retracting mechanism 20 is not limited to this, and may be applied to other devices that make a plurality of projecting/retracting members appear/retract. In this specification, the direction in which the central axis A of the writing instrument 10 extends (the longitudinal direction, the vertical direction in a vertical cross-sectional view) is referred to as the axial direction da, the direction orthogonal to the axial direction da is referred to as the radial direction dr, and the circumference around the central axis A is referred to as the axial direction da. The direction along the circumferential direction is defined as the circumferential direction dc. Further, along the axial direction da, when writing, the side that is close to a writing surface such as a paper surface is defined as the front, and the side that is away from the writing surface is defined as the rear. That is, the pen tip side is the front, and the side opposite to the pen tip is the rear. Along with this, the direction parallel to the axial direction da is sometimes referred to as the front-rear direction.
図１は、本発明による一実施の形態を説明するための図であって、出没機構２０を有する筆記具１０の一例を示す縦断面図であり、図２は、図１の筆記具１０の分解斜視図である。筆記具１０は、出没機構２０を備えている。出没機構２０は、軸筒３０と、第１出没部材４０と、第２出没部材５０と、回転部材６０と、重量体７０と、を有している。本実施の形態の出没機構２０は、固定カム部材８０をさらに備えている。 FIG. 1 is a diagram for explaining one embodiment of the present invention, and is a longitudinal sectional view showing an example of a writing instrument 10 having a retracting mechanism 20, and FIG. 2 is an exploded perspective view of the writing instrument 10 of FIG. It is a diagram. The writing instrument 10 includes a retracting mechanism 20. The projecting and retracting mechanism 20 includes a shaft cylinder 30, a first projecting and retracting member 40, a second projecting and retracting member 50, a rotating member 60, and a weight body 70. The projecting/retracting mechanism 20 of this embodiment further includes a fixed cam member 80.
出没機構２０は、出没部材４０，５０の先端を軸筒３０の前端の開口部３３から出没させる機能を有する機構である。とりわけ、出没機構２０は、複数の出没部材４０，５０のうちのいずれかの先端を開口部３３から出没させる機能を有する。本実施形態では、使用者が出没機構２０（筆記具１０）を前後方向に振ることによって、重量体７０が前後に移動し、これにともなって、各出没部材４０，５０の突出及び没入が切り換えられる。したがって、使用者が出没機構２０（筆記具１０）を持ち替えることなく、出没部材４０，５０を出没させることが可能である。 The protruding/retracting mechanism 20 is a mechanism that has a function of causing the tips of the protruding/retracting members 40 and 50 to protrude and retract from the opening 33 at the front end of the shaft tube 30. In particular, the projecting and retracting mechanism 20 has a function of causing the tip of one of the plurality of projecting and retracting members 40 and 50 to project and retract from the opening 33. In this embodiment, when the user swings the retractable mechanism 20 (writing instrument 10) in the front-rear direction, the weight body 70 moves back and forth, and accordingly, the protrusion and retraction of the retractable members 40 and 50 are switched. . Therefore, it is possible for the user to make the projecting and retracting members 40 and 50 appear and disappear without changing the user's grip on the projecting and retracting mechanism 20 (writing instrument 10).
軸筒３０は、出没機構２０を構成する各部品を収容する部材である。本実施形態では、軸筒３０は、第１出没部材４０、第２出没部材５０、回転部材６０、重量体７０及び固定カム部材８０を収容する。軸筒３０は、長手方向に延びる中心軸線Ａを有しており、長手方向の前端に開口部３３を有している。開口部３３は、出没部材４０，５０の先端が通過可能な形状及び寸法を有している。軸筒３０は、前軸３２、後軸３４及びキャップ３６を含んでいる。図１に示された例では、開口部３３は前軸３２の前端に設けられている。前軸３２の後端の内面には雌ネジ部が形成されており、この雌ネジ部が後軸３４の前端の外面に形成された雄ネジ部と螺合することにより、前軸３２が後軸３４に対して取り付けられる。キャップ３６は、後軸３４の後端を塞ぐ部品である。キャップ３６の前端の内面には雌ネジ部が形成されており、この雌ネジ部が後軸３４の後端の外面に形成された雄ネジ部と螺合することにより、キャップ３６が後軸３４に対して取り付けられる。後軸３４の後部には、軸方向ｄａに延びるスリット３５が形成されている。出没部材４０，５０の後述の操作部４６ｂ，５６ｂが、このスリット３５内を軸方向ｄａに沿って移動することが可能である。 The shaft cylinder 30 is a member that accommodates each component that constitutes the retracting mechanism 20. In this embodiment, the shaft cylinder 30 accommodates the first projecting and retracting member 40, the second projecting and retracting member 50, the rotating member 60, the weight body 70, and the fixed cam member 80. The shaft cylinder 30 has a central axis A that extends in the longitudinal direction, and has an opening 33 at the front end in the longitudinal direction. The opening 33 has a shape and size that allows the tips of the projecting and retracting members 40 and 50 to pass therethrough. The shaft cylinder 30 includes a front shaft 32, a rear shaft 34, and a cap 36. In the example shown in FIG. 1, the opening 33 is provided at the front end of the front shaft 32. A female thread is formed on the inner surface of the rear end of the front shaft 32, and when this female thread is engaged with a male thread formed on the outer surface of the front end of the rear shaft 34, the front shaft 32 is rotated rearward. It is attached to the shaft 34. The cap 36 is a component that closes the rear end of the rear shaft 34. A female threaded portion is formed on the inner surface of the front end of the cap 36, and by screwing this female threaded portion with a male threaded portion formed on the outer surface of the rear end of the rear shaft 34, the cap 36 is attached to the rear shaft 34. can be attached to. A slit 35 extending in the axial direction da is formed in the rear part of the rear shaft 34. Operating parts 46b and 56b of the projecting and retracting members 40 and 50, which will be described later, can move within this slit 35 along the axial direction da.
出没部材４０，５０は、回転部材６０の回転にともなって軸方向ｄａに移動することが可能に構成された部材である。第１出没部材４０は、第１先端部材４２、第１中間部材４４及び第１スライド部材４６を含んでいる。また、第２出没部材５０は、第２先端部材５２、第２中間部材５４及び第２スライド部材５６を含んでいる。図１には、第１出没部材４０の先端（ペン先４２ａ）が、軸筒３０の前端の開口部３３から前方へ突出し、第２出没部材５０の先端（ペン先５２ａ）が、軸筒３０の前端の開口部３３よりも後方に没入した状態で、筆記具１０が示されている。 The protruding and retracting members 40 and 50 are members configured to be movable in the axial direction da as the rotating member 60 rotates. The first retractable member 40 includes a first tip member 42, a first intermediate member 44, and a first slide member 46. Further, the second retractable member 50 includes a second tip member 52, a second intermediate member 54, and a second slide member 56. In FIG. 1, the tip (pen nib 42a) of the first protruding/retracting member 40 protrudes forward from the opening 33 at the front end of the barrel 30, and the tip (nib 52a) of the second protruding/retracting member 50 protrudes forward from the opening 33 at the front end of the barrel 30. The writing instrument 10 is shown recessed further back than the opening 33 at the front end.
先端部材４２，５２は、出没部材４０，５０が前方に移動した際に、その先端が軸筒３０の開口部３３から前方へ突出し、所望の機能を発揮する部材である。本実施形態の筆記具１０では、先端部材４２，５２はボールペンのレフィルである。したがって、先端部材４２，５２の先端は、ボールペンのペン先４２ａ，５２ａを構成する。第１先端部材４２と第２先端部材５２とは、互いに異なる色を有するインクを収容してもよい。この場合、筆記具１０は、互いに異なる色を有するインクでの筆記が可能な、いわゆる多色ボールペンとして機能する。ただし、先端部材４２，５２はボールペンのレフィルに限られない。先端部材４２，５２は他の筆記具用のペン先を含む部材であってもよい。また、先端部材４２，５２は筆記具用のペン先を含む部材に限られない。例えば、先端部材４２，５２は工具用先端部材であってもよい。工具としては、例えば、プラスドライバー、マイナスドライバー、六角棒レンチ等を挙げることができる。また、先端部材４２，５２はカトラリー用先端部材であってもよい。カトラリー用先端部材としては、例えば、スプーン、フォーク、ナイフ、ティースプーン等を挙げることができる。さらに、先端部材４２，５２は他の部材であってもよい。 The tip members 42, 52 are members whose tips protrude forward from the opening 33 of the shaft tube 30 when the projecting/retracting members 40, 50 move forward, and exhibit a desired function. In the writing instrument 10 of this embodiment, the tip members 42 and 52 are ballpoint pen refills. Therefore, the tips of the tip members 42, 52 constitute pen nibs 42a, 52a of the ballpoint pen. The first tip member 42 and the second tip member 52 may contain ink having different colors. In this case, the writing instrument 10 functions as a so-called multicolor ballpoint pen that can write with ink of different colors. However, the tip members 42 and 52 are not limited to ballpoint pen refills. The tip members 42, 52 may be members including a nib for other writing instruments. Moreover, the tip members 42 and 52 are not limited to members including a pen tip for a writing instrument. For example, the tip members 42, 52 may be tool tip members. Examples of the tool include a Phillips screwdriver, a flathead screwdriver, a hexagonal wrench, and the like. Moreover, the tip members 42 and 52 may be tip members for cutlery. Examples of cutlery tip members include spoons, forks, knives, teaspoons, and the like. Furthermore, the tip members 42, 52 may be other members.
スライド部材４６，５６は、後部が回転部材６０に係合して、回転部材６０の回転にともなって前後方向にスライドする部材である。スライド部材４６，５６の後部の径方向ｄｒの内面には、第１係合部４６ａ，５６ａが設けられている。第１係合部４６ａ，５６ａは、スライド部材４６，５６の内面から径方向ｄｒの内側へ向かって突出する突出部として形成されている。第１係合部４６ａ，５６ａは、それぞれ回転部材６０の後述の第１カム溝６２内に位置して、第１カム溝６２に対して係合する。スライド部材４６，５６の後部の径方向ｄｒの外面には、操作部４６ｂ，５６ｂが設けられている。操作部４６ｂ，５６ｂは、スライド部材４６，５６の外面から径方向ｄｒの外側へ向かって突出する突出部として形成されている。操作部４６ｂ，５６ｂは、軸筒３０（後軸３４）のスリット３５内に位置し、スリット３５内を前後に移動可能となっている。操作部４６ｂ，５６ｂは、軸筒３０（後軸３４）の外面よりもさらに外側へ向かって突出している。これにより、本実施形態では、使用者が操作部４６ｂ，５６ｂを操作することによっても、出没部材４０，５０を前後方向に移動させることができるようになっている。なお、使用者の操作により出没部材４０，５０を前後方向に移動させる必要がない場合には、操作部４６ｂ，５６ｂ及びスリット３５を省略することも可能である。 The slide members 46 and 56 are members whose rear portions engage with the rotating member 60 and slide in the front-rear direction as the rotating member 60 rotates. First engaging portions 46a, 56a are provided on the inner surfaces of the rear portions of the slide members 46, 56 in the radial direction dr. The first engaging portions 46a, 56a are formed as protruding portions that protrude inward in the radial direction dr from the inner surfaces of the slide members 46, 56. The first engaging portions 46a, 56a are each located within a first cam groove 62 (described later) of the rotating member 60, and engage with the first cam groove 62. Operating portions 46b, 56b are provided on the outer surfaces of the rear portions of the slide members 46, 56 in the radial direction dr. The operating portions 46b, 56b are formed as protruding portions that protrude outward in the radial direction dr from the outer surfaces of the slide members 46, 56. The operating parts 46b, 56b are located within the slit 35 of the shaft tube 30 (rear shaft 34), and are movable back and forth within the slit 35. The operating portions 46b, 56b protrude further outward than the outer surface of the shaft tube 30 (rear shaft 34). Thereby, in this embodiment, the protruding and retracting members 40 and 50 can also be moved in the front-rear direction by the user operating the operating parts 46b and 56b. Note that if it is not necessary to move the projecting and retracting members 40 and 50 in the front-back direction by the user's operation, the operating portions 46b and 56b and the slit 35 may be omitted.
中間部材４４，５４は、先端部材４２，５２とスライド部材４６，５６との間に位置し、先端部材４２，５２とスライド部材４６，５６とを連結する部材である。中間部材４４，５４の前端が先端部材４２，５２の後端に連結し、中間部材４４，５４の後端が、スライド部材４６，５６の前端に連結する。これにより、先端部材４２，５２、中間部材４４，５４及びスライド部材４６，５６は、一体的に前後に移動することが可能になる。なお、中間部材４４，５４を省略し、先端部材４２，５２とスライド部材４６，５６とを直接連結してもよいし、先端部材４２，５２、中間部材４４，５４及びスライド部材４６，５６を一体の部材で形成してもよい。 The intermediate members 44, 54 are located between the tip members 42, 52 and the slide members 46, 56, and are members that connect the tip members 42, 52 and the slide members 46, 56. The front ends of the intermediate members 44, 54 are connected to the rear ends of the tip members 42, 52, and the rear ends of the intermediate members 44, 54 are connected to the front ends of the slide members 46, 56. This allows the tip members 42, 52, intermediate members 44, 54, and slide members 46, 56 to integrally move back and forth. Note that the intermediate members 44, 54 may be omitted and the tip members 42, 52 and the slide members 46, 56 may be directly connected, or the tip members 42, 52, the intermediate members 44, 54, and the slide members 46, 56 may be connected directly. It may be formed from an integral member.
なお、本実施の形態では、出没機構２０は、第１出没部材４０及び第２出没部材５０の１つの出没部材を有しているが、これに限られず、出没機構２０は、３つ以上の出没部材を有してもよい。 In this embodiment, the projecting mechanism 20 has one projecting member, the first projecting member 40 and the second projecting member 50, but the projecting mechanism 20 is not limited to this, and the projecting mechanism 20 has three or more projecting members. It may have a retractable member.
回転部材６０は、軸筒３０に対して、中心軸線Ａ周りにすなわち周方向ｄｃには回転可能である。その一方、回転部材６０の軸筒３０に対する軸方向ｄａの移動は規制されている。回転部材６０は、重量体７０の後方への移動にともなって、中心軸線Ａ周りに回転する。回転部材６０は、外面に第１カム溝６２を有している。第１カム溝６２は、外面の全周に亘って延びている。第１カム溝６２は、周方向ｄｃの一方側へ向かうにつれて前方へ向かうように軸方向ｄａ及び周方向ｄｃに対して傾斜して延びる第１部分６２ａと、第１部分６２ａと連通し、周方向ｄｃの一方側へ向かうにつれて後方へ向かうように軸方向ｄａ及び周方向ｄｃに対して傾斜して延びる第２部分６２ｂとを含んでいる。第１部分６２ａ及び第２部分６２ｂは、周方向ｄｃに交互に配置されている。 The rotating member 60 is rotatable around the central axis A, that is, in the circumferential direction dc, with respect to the shaft tube 30. On the other hand, movement of the rotating member 60 in the axial direction da with respect to the shaft cylinder 30 is restricted. The rotating member 60 rotates around the central axis A as the weight body 70 moves rearward. The rotating member 60 has a first cam groove 62 on its outer surface. The first cam groove 62 extends all the way around the outer surface. The first cam groove 62 communicates with the first portion 62a, which extends obliquely with respect to the axial direction da and the circumferential direction dc so as to go forward as it goes to one side in the circumferential direction dc, and communicates with the first portion 62a. It includes a second portion 62b that extends obliquely with respect to the axial direction da and the circumferential direction dc so as to go rearward toward one side in the direction dc. The first portions 62a and the second portions 62b are arranged alternately in the circumferential direction dc.
第１カム溝６２内には、出没部材４０，５０の第１係合部４６ａ，５６ａが位置する。これにより、第１係合部４６ａ，５６ａが第１カム溝６２に対して係合している。ここで、第１係合部４６ａ，５６ａの軸方向ｄａの移動は許容されており、周方向ｄｃの移動は規制されている。したがって、回転部材６０が中心軸線Ａ周り（周方向ｄｃ）に回転することにより、第１係合部４６ａ，５６ａは、第１カム溝６２に係合しながら軸方向（前後方向）ｄａに移動する。これにより、出没部材４０，５０全体が前後方向に移動する。 In the first cam groove 62, the first engaging portions 46a and 56a of the projecting and retracting members 40 and 50 are located. As a result, the first engaging portions 46a, 56a are engaged with the first cam groove 62. Here, movement of the first engaging portions 46a, 56a in the axial direction da is allowed, and movement in the circumferential direction dc is restricted. Therefore, as the rotating member 60 rotates around the central axis A (circumferential direction dc), the first engaging portions 46a, 56a move in the axial direction (back and forth direction) da while engaging with the first cam groove 62. do. As a result, the entire protruding and retracting members 40 and 50 move in the front-back direction.
本実施の形態では、第１カム溝６２は、１つの第１部分６２ａと、１つの第２部分６２ｂとを含んでいる。すなわち、第１部分６２ａは、中心軸線Ａ周りに１８０度に亘って延びており、第２部分６２ｂは、中心軸線Ａ周りに１８０度に亘って延びている。したがって、第１カム溝６２のうち、最も前方に位置する最前部６２ｃと、最も後方に位置する最後部６２ｄとは、周方向ｄｃに沿って１８０度ずれて位置している。なお、これに限られず、第１カム溝６２は、第１部分６２ａの数と第２部分６２ｂの数とが同じである限りにおいて、２以上の第１部分６２ａと２以上の第２部分６２ｂとを含んでもよい。 In this embodiment, the first cam groove 62 includes one first portion 62a and one second portion 62b. That is, the first portion 62a extends over 180 degrees around the central axis A, and the second portion 62b extends over 180 degrees around the central axis A. Therefore, in the first cam groove 62, the frontmost portion 62c located furthest forward and the rearmost portion 62d located furthest back are located 180 degrees apart from each other along the circumferential direction dc. Note that the first cam groove 62 is not limited to this, and as long as the number of first portions 62a and the number of second portions 62b are the same, the first cam groove 62 has two or more first portions 62a and two or more second portions 62b. It may also include.
回転部材６０は、内面に第１突出部６４を有している。本実施の形態では、回転部材６０の内面に、周方向ｄｃに沿って複数の第１突出部６４が形成されている。とりわけ図示された例では、回転部材６０の内面に、周方向ｄｃに沿って互いに等角度ピッチを有して４つの第１突出部６４が形成されている。すなわち、周方向ｄｃに隣り合う２つの第１突出部６４は、互いに９０度ずれて位置している。第１突出部６４は、軸方向ｄａに沿って延びており、前端に前方傾斜面６６を有している。前方傾斜面６６は、軸方向ｄａに対して傾斜するとともに周方向ｄｃに対して前側に傾斜している。周方向ｄｃに隣り合う２つの第１突出部６４の間には、溝部６８が形成されている。溝部６８は、軸方向ｄａに沿って延びている。図示された例では、回転部材６０の内面に、周方向ｄｃに沿って互いに等角度ピッチを有して４つの溝部６８が形成されている。 The rotating member 60 has a first protrusion 64 on its inner surface. In this embodiment, a plurality of first protrusions 64 are formed on the inner surface of the rotating member 60 along the circumferential direction dc. In particular, in the illustrated example, four first protrusions 64 are formed on the inner surface of the rotating member 60 at equal angular pitches along the circumferential direction dc. That is, the two first protrusions 64 adjacent to each other in the circumferential direction dc are located 90 degrees apart from each other. The first protrusion 64 extends along the axial direction da, and has a front inclined surface 66 at the front end. The front inclined surface 66 is inclined with respect to the axial direction da and is inclined forward with respect to the circumferential direction dc. A groove 68 is formed between two first protrusions 64 adjacent in the circumferential direction dc. The groove portion 68 extends along the axial direction da. In the illustrated example, four grooves 68 are formed on the inner surface of the rotating member 60 at equal angular pitches along the circumferential direction dc.
重量体７０は、軸筒３０に対して、中心軸線Ａ周りにすなわち周方向ｄｃに回転可能、且つ、前後方向すなわち軸方向ｄａに回転可能に構成されている。重量体７０は、使用者が軸筒３０を前後方向に振ったときに、慣性力の作用により軸筒３０内を前後方向に移動する。重量体７０は、前方部分の外面に第２係合部７２を有している。第２係合部７２は、重量体７０の外面から径方向ｄｒの外側に突出した突出部である。本実施形態では、第２係合部７２は、径方向ｄｒの外側から見て円形の輪郭を有している。すなわち、第２係合部７２は、重量体７０の外面から径方向ｄｒの外側に突出した円柱状の形状を有している。図示された例では、重量体７０の外面に、周方向ｄｃに沿って互いに等角度ピッチを有して４つの第２係合部７２が形成されている。すなわち、周方向ｄｃに隣り合う２つの第２係合部７２は、互いに９０度ずれて位置している。 The weight body 70 is configured to be rotatable about the central axis A, that is, in the circumferential direction dc, and to be rotatable in the front-rear direction, that is, the axial direction da, with respect to the shaft cylinder 30. The weight body 70 moves in the longitudinal direction within the barrel 30 due to the action of inertia when the user swings the barrel 30 in the longitudinal direction. The weight body 70 has a second engaging portion 72 on the outer surface of the front portion. The second engaging portion 72 is a protruding portion that protrudes outward from the outer surface of the weight body 70 in the radial direction dr. In this embodiment, the second engaging portion 72 has a circular outline when viewed from the outside in the radial direction dr. That is, the second engaging portion 72 has a cylindrical shape that protrudes outward in the radial direction dr from the outer surface of the weight body 70. In the illustrated example, four second engaging portions 72 are formed on the outer surface of the weight body 70 at equal angular pitches along the circumferential direction dc. That is, the two second engaging portions 72 adjacent to each other in the circumferential direction dc are located 90 degrees apart from each other.
重量体７０は、第２係合部７２よりも後方の外面に、重量体７０の外面から径方向ｄｒの外側に突出した第２突出部７４を有している。図示された例では、重量体７０の外面に、周方向ｄｃに沿って互いに等角度ピッチを有して４つの第２突出部７４が形成されている。すなわち、周方向ｄｃに隣り合う２つの第２突出部７４は、互いに９０度ずれて位置している。第２突出部７４は、軸方向ｄａに沿って延びており、後端に後方傾斜面７６を有している。後方傾斜面７６は、軸方向ｄａに対して傾斜するとともに周方向ｄｃに対して後側に傾斜している。本実施形態では、各第２係合部７２と各第２突出部７４とは、軸方向ｄａに沿って並んで配置されている。すなわち、各第２係合部７２の周方向ｄｃに沿った角度位置と各第２突出部７４の周方向ｄｃに沿った角度位置とは、互いに一致している。 The weight body 70 has a second protruding portion 74 that protrudes outward in the radial direction dr from the outer surface of the weight body 70 on the outer surface rearward of the second engaging portion 72 . In the illustrated example, four second protrusions 74 are formed on the outer surface of the weight body 70 at equal angular pitches along the circumferential direction dc. That is, the two second protrusions 74 adjacent to each other in the circumferential direction dc are positioned 90 degrees apart from each other. The second protrusion 74 extends along the axial direction da, and has a rear inclined surface 76 at its rear end. The rear inclined surface 76 is inclined with respect to the axial direction da and rearward with respect to the circumferential direction dc. In this embodiment, each second engaging portion 72 and each second protruding portion 74 are arranged side by side along the axial direction da. That is, the angular position of each second engaging portion 72 along the circumferential direction dc and the angular position of each second protruding portion 74 along the circumferential direction dc match each other.
重量体７０が後方へ移動することにより、第２突出部７４の後方傾斜面７６が後方へ移動すると、後方傾斜面７６が回転部材６０の第１突出部６４の前方傾斜面６６を後方へ押圧する。これにより、後方傾斜面７６に対して前方傾斜面６６がすべり、回転部材６０が周方向ｄｃの一方側へ向かって回転する。このとき、後方傾斜面７６による前方傾斜面６６への押圧力を十分に確保する観点からは、重量体７０の重量が大きいことが好ましい。このため、重量体７０の少なくとも一部は金属材料で構成されることが好ましい。例えば、重量体７０の全体が金属材料で構成されてもよい。また、重量体７０は、樹脂材料で構成された部分と金属材料で構成された部分とを含んでもよい。 When the weight body 70 moves rearward and the rear inclined surface 76 of the second protrusion 74 moves rearward, the rear inclined surface 76 presses the front inclined surface 66 of the first protrusion 64 of the rotating member 60 rearward. do. As a result, the front inclined surface 66 slides with respect to the rear inclined surface 76, and the rotating member 60 rotates toward one side in the circumferential direction dc. At this time, it is preferable that the weight of the weight body 70 is large from the viewpoint of ensuring sufficient pressing force against the front inclined surface 66 by the rear inclined surface 76. For this reason, it is preferable that at least a portion of the weight body 70 be made of a metal material. For example, the entire weight body 70 may be made of a metal material. Further, the weight body 70 may include a portion made of a resin material and a portion made of a metal material.
固定カム部材８０は、軸筒３０に対して前後方向（軸方向ｄａ）の移動及び中心軸線Ａ周り（周方向ｄｃ）の移動が規制されている。固定カム部材８０は、内面に第２カム溝８２を有している。本実施形態では、固定カム部材８０の内面に周方向ｄｃに沿って互いに等角度ピッチを有して４つの第２カム溝８２が形成されている。すなわち、周方向ｄｃに隣り合う２つの第２カム溝８２は、互いに９０度ずれて位置している。第２カム溝８２内には、重量体７０の第２係合部７２が位置する。これにより、第２係合部７２が第２カム溝８２に対して係合している。重量体７０の前後方向の移動にともなって、第２係合部７２は第２カム溝８２内を移動する。第２カム溝８２は、概ね軸方向ｄａに延びており、前端８４と後端８５とを有している。前端８４は閉塞されており、第２係合部７２は前端８４よりも前方には移動しない。後端８５は後方へ向けて開口されており、第２係合部７２は後端８５よりも後方へ移動することができる。 The fixed cam member 80 is restricted from moving in the longitudinal direction (axial direction da) and around the central axis A (circumferential direction dc) with respect to the shaft cylinder 30. The fixed cam member 80 has a second cam groove 82 on its inner surface. In this embodiment, four second cam grooves 82 are formed on the inner surface of the fixed cam member 80 along the circumferential direction dc at equal angular pitches. That is, the two second cam grooves 82 adjacent to each other in the circumferential direction dc are positioned 90 degrees apart from each other. The second engaging portion 72 of the weight body 70 is located within the second cam groove 82 . Thereby, the second engaging portion 72 is engaged with the second cam groove 82. As the weight body 70 moves in the front-back direction, the second engaging portion 72 moves within the second cam groove 82 . The second cam groove 82 extends generally in the axial direction da, and has a front end 84 and a rear end 85. The front end 84 is closed, and the second engaging portion 72 does not move further forward than the front end 84. The rear end 85 is opened rearward, and the second engaging portion 72 can move rearward than the rear end 85.
第２カム溝８２は、第１ガイド面８７及び第２ガイド面８８を有している。第１ガイド面８７は、軸方向ｄａに対して傾斜するとともに周方向ｄｃに対して前側に傾斜している。第２ガイド面８８は、軸方向ｄａに対して傾斜するとともに周方向ｄｃに対して後側に傾斜している。本実施形態では、第１ガイド面８７は、第２ガイド面８８に対して、軸方向ｄａの後方に位置している。 The second cam groove 82 has a first guide surface 87 and a second guide surface 88. The first guide surface 87 is inclined with respect to the axial direction da and is inclined forward with respect to the circumferential direction dc. The second guide surface 88 is inclined with respect to the axial direction da and rearward with respect to the circumferential direction dc. In this embodiment, the first guide surface 87 is located at the rear of the second guide surface 88 in the axial direction da.
また、固定カム部材８０は、外面に軸方向ｄａに延びる溝部８９を有している。とりわけ、固定カム部材８０は２つの溝部８９を有している。溝部８９は、出没部材４０，５０の一部を収容可能に構成されている。とりわけ本実施の形態では、溝部８９は、出没部材４０，５０の中間部材４４，５４を収容する。中間部材４４，５４は、溝部８９内に収容された状態で軸方向ｄａに移動可能である。 Further, the fixed cam member 80 has a groove portion 89 extending in the axial direction da on the outer surface. In particular, the fixed cam member 80 has two grooves 89. The groove portion 89 is configured to accommodate a portion of the protruding and retracting members 40 and 50. Particularly in this embodiment, the groove portion 89 accommodates the intermediate members 44 and 54 of the protruding and retracting members 40 and 50. The intermediate members 44 and 54 are movable in the axial direction da while being accommodated in the groove portion 89.
次に、図３Ａ～図４を参照して、回転部材６０を中心軸線Ａ周りに回転させる動作について説明する。図３Ａ～図３Ｅは、回転部材６０を回転させるための動作を説明する図であり、図４は、図３ＡのＩＶ－ＩＶ線に対応する図である。図３Ａ～図３Ｅでは、重量体７０の第２係合部７２及び第２突出部７４並びに固定カム部材８０の第２カム溝８２が、径方向ｄｒの内側から見た状態で、すなわち中心軸線Ａから見た状態で、示されている。 Next, the operation of rotating the rotating member 60 around the central axis A will be described with reference to FIGS. 3A to 4. 3A to 3E are diagrams for explaining the operation for rotating the rotating member 60, and FIG. 4 is a diagram corresponding to the IV-IV line in FIG. 3A. 3A to 3E, the second engaging portion 72 and second protruding portion 74 of the weight body 70 and the second cam groove 82 of the fixed cam member 80 are shown in a state viewed from inside in the radial direction dr, that is, along the center axis line. It is shown as seen from A.
ここで、図４に示されているように、径方向ｄｒに沿った重量体７０の外面からの第２突出部７４の高さは、径方向ｄｒに沿った重量体７０の外面からの第２係合部７２の高さよりも低い。これにより、本実施形態では、第２係合部７２は固定カム部材８０の第２カム溝８２に対して係合するが、第２突出部７４は、第２カム溝８２に対して係合しない。 Here, as shown in FIG. 4, the height of the second protrusion 74 from the outer surface of the weight body 70 along the radial direction dr is the height of the second protrusion 74 from the outer surface of the weight body 70 along the radial direction dr. The height is lower than the height of the second engaging portion 72. As a result, in the present embodiment, the second engaging portion 72 engages with the second cam groove 82 of the fixed cam member 80, but the second protruding portion 74 engages with the second cam groove 82. do not.
使用者が筆記具１０の前端が下側に位置するように筆記具１０を保持している場合、すなわち、使用者が出没機構２０の前端が下側に位置するように、出没機構２０を保持している場合、重量体７０は、重力の作用により前方側に位置する。このとき、重量体７０の第２係合部７２は、図３Ａに示されているように、固定カム部材８０の第２カム溝８２の前端８４に位置する。 When the user holds the writing instrument 10 so that the front end of the writing instrument 10 is located on the lower side, that is, when the user holds the ejection/retraction mechanism 20 so that the front end of the ejection/retraction mechanism 20 is located on the lower side. If so, the weight body 70 is located on the front side due to the action of gravity. At this time, the second engaging portion 72 of the weight body 70 is located at the front end 84 of the second cam groove 82 of the fixed cam member 80, as shown in FIG. 3A.
使用者が筆記具１０（出没機構２０）を後方に振ると、重量体７０は、慣性力により後方へ移動する。このとき、重量体７０の第２係合部７２も後方に移動して、図３Ｂに示されているように、第２カム溝８２の第１ガイド面８７に当接する。 When the user swings the writing instrument 10 (the retractable mechanism 20) backward, the weight body 70 moves backward due to inertia force. At this time, the second engaging portion 72 of the weight body 70 also moves rearward and comes into contact with the first guide surface 87 of the second cam groove 82, as shown in FIG. 3B.
重量体７０が慣性力によりさらに後方へ移動すると、重量体７０の第２係合部７２は、第２カム溝８２の第１ガイド面８７にガイドされて、軸方向ｄａの後方且つ周方向ｄｃの一方側へ移動する。このとき、重量体７０の第２突出部７４の後方傾斜面７６が後方へ移動して、後方傾斜面７６が回転部材６０の第１突出部６４の前方傾斜面６６に当接する。重量体７０が慣性力によりさらに後方へ移動することにより、後方傾斜面７６は前方傾斜面６６を後方へ押圧する。これにより、後方傾斜面７６に対して前方傾斜面６６がすべり、図３Ｃに示されているように、回転部材６０が周方向ｄｃの一方側へ向かって回転する。 When the weight body 70 moves further rearward due to inertia force, the second engaging portion 72 of the weight body 70 is guided by the first guide surface 87 of the second cam groove 82 and moves backward in the axial direction da and in the circumferential direction dc. Move to one side. At this time, the rear inclined surface 76 of the second protrusion 74 of the weight body 70 moves rearward, and the rear inclined surface 76 comes into contact with the front inclined surface 66 of the first protrusion 64 of the rotating member 60 . As the weight body 70 moves further rearward due to inertia force, the rear inclined surface 76 presses the front inclined surface 66 rearward. As a result, the front inclined surface 66 slides with respect to the rear inclined surface 76, and the rotating member 60 rotates toward one side in the circumferential direction dc, as shown in FIG. 3C.
その後、重量体７０が慣性力によりさらに後方へ移動すると、重量体７０の第２突出部７４は、図３Ｄに示されているように、回転部材６０の溝部６８内に進入する。このとき、重量体７０の第２係合部７２は、第２カム溝８２の後端８５よりもさらに後方へ移動する。 Thereafter, when the weight body 70 moves further rearward due to inertial force, the second protrusion 74 of the weight body 70 enters into the groove 68 of the rotating member 60, as shown in FIG. 3D. At this time, the second engaging portion 72 of the weight body 70 moves further rearward than the rear end 85 of the second cam groove 82 .
使用者が筆記具１０（出没機構２０）を後方に振ることを停止すると、重量体７０は、重力の作用により前方へ移動する。これに限られず、使用者が筆記具１０（出没機構２０）を前方に振ることによっても、慣性力の作用により重量体７０は前方へ移動する。これにより、図３Ｅに示されているように、重量体７０の第２係合部７２が前方へ移動し、固定カム部材８０の第２カム溝８２内に位置するようになる。このとき、第２突出部７４は、回転部材６０の溝部６８から前方へ抜け出る。 When the user stops swinging the writing instrument 10 (the retractable mechanism 20) backward, the weight body 70 moves forward due to the action of gravity. The invention is not limited to this, and the weight body 70 also moves forward due to the action of inertia when the user swings the writing instrument 10 (the retractable mechanism 20) forward. As a result, as shown in FIG. 3E, the second engaging portion 72 of the weight body 70 moves forward and comes to be located within the second cam groove 82 of the fixed cam member 80. At this time, the second protrusion 74 slips out of the groove 68 of the rotating member 60 forward.
重量体７０がさらに前方へ移動すると、第２係合部７２も前方に移動して、第２カム溝８２の第２ガイド面８８に当接する。その後、第２係合部７２は、第２ガイド面８８にガイドされて、軸方向ｄａの前方且つ周方向ｄｃの他方側へ移動し、図３Ａに示されているように、第２カム溝８２の前端８４に位置するようになる。 When the weight body 70 moves further forward, the second engaging portion 72 also moves forward and comes into contact with the second guide surface 88 of the second cam groove 82 . Thereafter, the second engaging portion 72 is guided by the second guide surface 88 and moves forward in the axial direction da and to the other side in the circumferential direction dc, and as shown in FIG. 82 at the front end 84.
したがって、使用者が筆記具１０（出没機構２０）を前後方向に１回振ることにより、回転部材６０が周方向ｄｃに所定角度回転し、回転部材６０の第１突出部６４は、周方向ｄｃの一方側に隣り合う第１突出部６４が位置していた位置へ移動する。とりわけ本実施形態では、使用者が出没機構２０を前後方向に１回振ることにより、回転部材６０が周方向ｄｃの一方側に９０度回転する。 Therefore, when the user swings the writing instrument 10 (the retractable mechanism 20) once in the front-back direction, the rotating member 60 rotates by a predetermined angle in the circumferential direction dc, and the first protrusion 64 of the rotating member 60 rotates in the circumferential direction dc. It moves to the position where the first protrusion part 64 adjacent to one side was located. Particularly in this embodiment, when the user swings the retracting mechanism 20 once in the front-rear direction, the rotating member 60 rotates 90 degrees to one side in the circumferential direction dc.
次に、図５Ａ～図５Ｄを参照して、出没部材４０，５０の出没動作について説明する。図５Ａ～図５Ｄは、出没部材４０，５０の出没動作について説明するための図であり、回転部材６０の第１カム溝６２と、出没部材４０，５０の第１係合部４６ａ，５６ａ、との位置関係を示す図である。図５Ａ～図５Ｄでは、第１カム溝６２及び第１係合部４６ａ，５６ａが、径方向ｄｒの外側側から見た状態で、すなわち中心軸線Ａに向かって見た状態で、示されている。 Next, the protruding and retracting operations of the protruding and retracting members 40 and 50 will be described with reference to FIGS. 5A to 5D. 5A to 5D are diagrams for explaining the protruding and retracting operations of the protruding and retracting members 40 and 50, and show the first cam groove 62 of the rotating member 60, the first engaging portions 46a and 56a of the protruding and retracting members 40 and 50, FIG. 5A to 5D, the first cam groove 62 and the first engaging portions 46a, 56a are shown as viewed from the outside in the radial direction dr, that is, as viewed toward the central axis A. There is.
図５Ａには、第１出没部材４０の第１係合部４６ａが、回転部材６０の第１カム溝６２の最前部６２ｃに位置し、第２出没部材５０の第１係合部５６ａが、第１カム溝６２の最後部６２ｄに位置した状態が示されている。このとき、図１に示されているように、第１出没部材４０の先端（ペン先４２ａ）は、軸筒３０の前端の開口部３３から前方へ突出し、第２出没部材５０の先端（ペン先５２ａ）は、軸筒３０の前端の開口部３３よりも後方に没入している。この状態では、第１出没部材４０が使用可能である。 In FIG. 5A, the first engaging part 46a of the first projecting and retracting member 40 is located at the frontmost part 62c of the first cam groove 62 of the rotating member 60, and the first engaging part 56a of the second projecting and retracting member 50 is A state where the first cam groove 62 is located at the rearmost portion 62d is shown. At this time, as shown in FIG. The tip 52a) is recessed further back than the opening 33 at the front end of the shaft tube 30. In this state, the first projecting and retracting member 40 can be used.
回転部材６０の周方向ｄｃの回転にともなって、すなわち第１カム溝６２の周方向ｄｃの回転にともなって、第１出没部材４０の第１係合部４６ａの軸方向ｄａの位置及び第２出没部材５０の第１係合部５６ａの軸方向ｄａの位置は、それぞれ変化する。回転部材６０が周方向ｄｃの一方側に９０度回転すると、図５Ｂに示されているように、第１出没部材４０の第１係合部４６ａは、第１カム溝６２の第１部分６２ａの中間部分に位置し、第２出没部材５０の第１係合部５６ａは、第１カム溝６２の第２部分６２ｂの中間部分に位置する。このとき、第１出没部材４０の先端及び第２出没部材５０の先端は、いずれも軸筒３０の前端の開口部３３よりも後方に没入する。この状態では、第１出没部材４０及び第２出没部材５０は、いずれも使用不能である。 As the rotating member 60 rotates in the circumferential direction dc, that is, as the first cam groove 62 rotates in the circumferential direction dc, the position of the first engaging portion 46a of the first projecting and retracting member 40 in the axial direction da and the second The positions of the first engaging portions 56a of the protruding and retracting members 50 in the axial direction da vary. When the rotating member 60 rotates 90 degrees to one side in the circumferential direction dc, the first engaging portion 46a of the first projecting and retracting member 40 engages the first portion 62a of the first cam groove 62, as shown in FIG. 5B. The first engaging portion 56a of the second protruding/retracting member 50 is located at the middle portion of the second portion 62b of the first cam groove 62. At this time, the distal end of the first protruding/retracting member 40 and the distal end of the second protruding/retracting member 50 are both recessed behind the opening 33 at the front end of the shaft tube 30 . In this state, both the first projecting and retracting member 40 and the second projecting and retracting member 50 are unusable.
回転部材６０が周方向ｄｃの一方側にさらに９０度回転すると、図５Ｃに示されているように、第１出没部材４０の第１係合部４６ａは、第１カム溝６２の最後部６２ｄに位置し、第２出没部材５０の第１係合部５６ａは、第１カム溝６２の最前部６２ｃに位置する。このとき、第１出没部材４０の先端（ペン先４２ａ）は、軸筒３０の前端の開口部３３よりも後方に没入し、第２出没部材５０の先端（ペン先５２ａ）は、軸筒３０の前端の開口部３３から前方へ突出する。この状態では、第２出没部材５０が使用可能である。 When the rotating member 60 further rotates 90 degrees to one side in the circumferential direction dc, the first engaging portion 46a of the first protruding and retracting member 40 engages the rearmost portion 62d of the first cam groove 62, as shown in FIG. 5C. The first engaging portion 56a of the second projecting/retracting member 50 is located at the frontmost portion 62c of the first cam groove 62. At this time, the tip (pen tip 42a) of the first protruding/retracting member 40 is recessed behind the opening 33 at the front end of the barrel 30, and the tip (pen tip 52a) of the second protruding/retracting member 50 is inserted into the barrel 30. It protrudes forward from an opening 33 at the front end. In this state, the second projecting and retracting member 50 can be used.
回転部材６０が周方向ｄｃの一方側にさらに９０度回転すると、図５Ｄに示されているように、第１出没部材４０の第１係合部４６ａは、第１カム溝６２の第２部分６２ｂの中間部分に位置し、第２出没部材５０の第１係合部５６ａは、第１カム溝６２の第１部分６２ａの中間部分に位置する。このとき、第１出没部材４０の先端及び第２出没部材５０の先端は、いずれも軸筒３０の前端の開口部３３よりも後方に没入する。この状態では、第１出没部材４０及び第２出没部材５０は、いずれも使用不能である。 When the rotating member 60 further rotates 90 degrees to one side in the circumferential direction dc, the first engaging portion 46a of the first protruding and retracting member 40 engages with the second portion of the first cam groove 62, as shown in FIG. 5D. 62b, and the first engaging portion 56a of the second protruding/retracting member 50 is located at the middle portion of the first portion 62a of the first cam groove 62. At this time, the distal end of the first protruding/retracting member 40 and the distal end of the second protruding/retracting member 50 are both recessed behind the opening 33 at the front end of the shaft tube 30 . In this state, both the first projecting and retracting member 40 and the second projecting and retracting member 50 are unusable.
回転部材６０が周方向ｄｃの一方側にさらに９０度回転すると、図５Ａに示した状態へ戻る。 When the rotating member 60 further rotates 90 degrees to one side in the circumferential direction dc, it returns to the state shown in FIG. 5A.
本実施形態の出没機構２０は、長手方向に延びる中心軸線Ａを有し、長手方向の前端に開口部３３を有する軸筒３０と、複数の出没部材４０，５０と、中心軸線Ａ周りに回転することにより、各出没部材４０，５０の先端部を開口部３３から順に出没させる回転部材６０と、前後に移動することにより、回転部材６０を中心軸線Ａ周りに回転させる重量体７０と、を備える。 The retractable mechanism 20 of this embodiment has a central axis A that extends in the longitudinal direction, and includes a shaft cylinder 30 that has an opening 33 at the front end in the longitudinal direction, a plurality of retractable members 40 and 50, and rotates around the central axis A. By doing so, the rotating member 60 that makes the tips of the respective protruding and retracting members 40 and 50 appear and disappear in order from the opening 33, and the weight body 70 that rotates the rotating member 60 around the central axis A by moving back and forth. Be prepared.
なお、本実施形態では、出没部材４０，５０は、操作部４６ｂ，５６ｂを有している。使用者がこの操作部４６ｂ，５６ｂを前方へ向けて押圧する（ノックする）ことによっても、軸筒３０の前端の開口部３３から出没部材４０，５０の先端を突出させることができる。 In addition, in this embodiment, the retractable members 40 and 50 have operation parts 46b and 56b. The tips of the retractable members 40 and 50 can also be made to protrude from the opening 33 at the front end of the shaft tube 30 by the user pushing (knocking) the operating parts 46b and 56b forward.
本実施形態の出没機構２０では、回転部材６０は、軸方向ｄａに対して傾斜するとともに周方向ｄｃに対して前側に傾斜した前方傾斜面６６を有し、重量体７０は、軸方向ｄａに対して傾斜するとともに周方向ｄｃに対して後側に傾斜した後方傾斜面７６を有し、後方傾斜面７６が後方に移動して前方傾斜面６６を押圧することにより、回転部材６０が回転する。 In the projecting/retracting mechanism 20 of the present embodiment, the rotating member 60 has a front inclined surface 66 that is inclined with respect to the axial direction da and inclined forward with respect to the circumferential direction dc, and the weight body 70 is inclined with respect to the axial direction da. The rotary member 60 rotates when the rear inclined surface 76 moves rearward and presses the front inclined surface 66. .
本実施形態の出没機構２０では、回転部材６０は、外面に第１カム溝６２を有し、出没部材４０，５０は、第１カム溝６２に係合する第１係合部４６ａ，５６ａを有する。 In the projecting/retracting mechanism 20 of this embodiment, the rotating member 60 has a first cam groove 62 on the outer surface, and the projecting/retracting members 40 and 50 have first engaging portions 46a and 56a that engage with the first cam groove 62. have
本実施形態の出没機構２０では、第１カム溝６２は、周方向ｄｃの一方側へ向かうにつれて前方へ向かうように軸方向ｄａ及び周方向ｄｃに対して傾斜して延びる第１部分６２ａと、第１部分６２ａと連通し、周方向ｄｃの一方側へ向かうにつれて後方へ向かうように軸方向ｄａ及び周方向ｄｃに対して傾斜して延びる第２部分６２ｂとを含み、第１部分６２ａ及び第２部分６２ｂは、周方向ｄｃに交互に配置されている。 In the protruding and retracting mechanism 20 of the present embodiment, the first cam groove 62 includes a first portion 62a that extends obliquely with respect to the axial direction da and the circumferential direction dc so as to go forward as it goes toward one side in the circumferential direction dc; A second portion 62b communicates with the first portion 62a and extends obliquely with respect to the axial direction da and the circumferential direction dc so as to go rearward toward one side in the circumferential direction dc. The two portions 62b are alternately arranged in the circumferential direction dc.
本実施形態の出没機構２０では、軸筒３０に対して周方向ｄｃ及び軸方向ｄａの移動が規制された固定カム部材８０をさらに備え、固定カム部材８０は、周方向ｄｃに配列された複数の第２カム溝８２を内面に有し、重量体７０は、第２カム溝８２に係合する第２係合部７２を有する。 The protruding and retracting mechanism 20 of this embodiment further includes a fixed cam member 80 whose movement in the circumferential direction dc and the axial direction da with respect to the shaft cylinder 30 is restricted, and the fixed cam member 80 includes a plurality of fixed cam members 80 arranged in the circumferential direction dc. The weight body 70 has a second cam groove 82 on its inner surface, and the weight body 70 has a second engaging portion 72 that engages with the second cam groove 82 .
このような出没機構２０によれば、この出没機構２０を軸方向ｄａに振るだけで、複数の出没部材４０，５０の先端部を開口部３３から順に出没させることができる。したがって、使用者が出没機構２０を持ち替えることなく、出没部材４０，５０の先端部を出没させることが可能になる。 According to such a projecting/retracting mechanism 20, the distal ends of the plurality of projecting/retracting members 40, 50 can be made to emerge and retract from the opening 33 in order by simply swinging the projecting/retracting mechanism 20 in the axial direction da. Therefore, the tip portions of the projecting and retracting members 40 and 50 can be projected and retracted without the user changing the grip of the projecting and retracting mechanism 20.
本実施形態の出没機構２０では、出没部材４０，５０は、筆記用先端部材を含んでもよい。 In the retractable mechanism 20 of this embodiment, the retractable members 40 and 50 may include a writing tip member.
筆記用先端部材としては、例えば、ボールペンのレフィルや、他の筆記具用のペン先等を挙げることができる。このような出没機構２０によれば、使用者が持ち替えることなく、複数のペン先を順に出没させることが可能な筆記具１０を提供することができる。 Examples of the writing tip member include a refill for a ballpoint pen and a nib for other writing instruments. According to such a projecting/retracting mechanism 20, it is possible to provide the writing instrument 10 in which a plurality of pen nibs can be sequentially projected and retracted without the user having to change the pen tip.
本実施形態の出没機構２０では、出没部材４０，５０は、工具用先端部材を含んでもよい。 In the retractable mechanism 20 of this embodiment, the retractable members 40 and 50 may include a tool tip member.
工具用先端部材としては、例えば、プラスドライバー、マイナスドライバー、六角棒レンチ等を挙げることができる。このような出没機構２０によれば、使用者が持ち替えることなく、複数の工具用先端部材を順に出没させることが可能な工具を提供することができる。 Examples of the tip member for a tool include a Phillips screwdriver, a flathead screwdriver, a hexagonal wrench, and the like. According to such a projecting/retracting mechanism 20, it is possible to provide a tool in which a plurality of tool tip members can be sequentially projected/retracted without the user having to switch hands.
本実施形態の出没機構２０では、出没部材４０，５０は、カトラリー用先端部材を含んでもよい。 In the projecting and retracting mechanism 20 of this embodiment, the projecting and retracting members 40 and 50 may include a cutlery tip member.
カトラリー用先端部材としては、例えば、スプーン、フォーク、ナイフ、ティースプーン等を挙げることができる。このような出没機構２０によれば、使用者が持ち替えることなく、複数のカトラリー用先端部材を順に出没させることが可能なカトラリーを提供することができる。 Examples of cutlery tip members include spoons, forks, knives, teaspoons, and the like. According to such a projecting/retracting mechanism 20, it is possible to provide a cutlery in which a plurality of cutlery tip members can be sequentially projected and retracted without the user having to change their hands.
１０ 筆記具
２０ 出没機構
３０ 軸筒
３２ 前軸
３３ 開口部
３４ 後軸
３５ スリット
３６ キャップ
４０ 第１出没部材
４２ 第１先端部材
４２ａ ペン先
４４ 第１中間部材
４６ 第１スライド部材
４６ａ 第１係合部
４６ｂ 操作部
５０ 第２出没部材
５２ 第２先端部材
５２ａ ペン先
５４ 第２中間部材
５６ 第２スライド部材
５６ａ 第１係合部
５６ｂ 操作部
６０ 回転部材
６２ 第１カム溝
６２ａ 第１部分
６２ｂ 第２部分
６２ｃ 最前部
６２ｄ 最後部
６４ 第１突出部
６６ 前方傾斜面
６８ 溝部
７０ 重量体
７２ 第２係合部
７４ 第２突出部
７６ 後方傾斜面
８０ 固定カム部材
８２ 第２カム溝
８４ 前端
８５ 後端
８７ 第１ガイド面
８８ 第２ガイド面
８９ 溝部
10 Writing instrument 20 Retractable mechanism 30 Barrel 32 Front shaft 33 Opening 34 Rear shaft 35 Slit 36 Cap 40 First retractable member 42 First tip member 42a Pen nib 44 First intermediate member 46 First slide member 46a First engaging portion 46b Operating section 50 Second projecting/retracting member 52 Second tip member 52a Pen tip 54 Second intermediate member 56 Second sliding member 56a First engaging section 56b Operating section 60 Rotating member 62 First cam groove 62a First portion 62b Second Part 62c Frontmost part 62d Rearmost part 64 First protrusion 66 Front inclined surface 68 Groove part 70 Weight body 72 Second engaging part 74 Second protruding part 76 Rear inclined surface 80 Fixed cam member 82 Second cam groove 84 Front end 85 Rear end 87 First guide surface 88 Second guide surface 89 Groove
Claims (7)
複数の出没部材と、
前記中心軸線周りに回転することにより、各出没部材の先端部を前記開口部から順に出没させる回転部材と、
前後に移動することにより、前記回転部材を前記中心軸線周りに回転させる重量体と、を備え、
前記回転部材は、軸方向に対して傾斜するとともに周方向に対して前側に傾斜した前方傾斜面を有し、
前記重量体は、軸方向に対して傾斜するとともに周方向に対して後側に傾斜した後方傾斜面を有し、
前記後方傾斜面が後方に移動して前記前方傾斜面を押圧することにより、前記回転部材が回転する、出没機構。 a shaft cylinder having a central axis extending in the longitudinal direction and having an opening at the front end in the longitudinal direction;
Multiple appearing parts,
a rotating member that rotates around the central axis to cause the tip of each protruding and retracting member to sequentially protrude and retract from the opening;
a weight body that rotates the rotating member around the central axis by moving back and forth ;
The rotating member has a front inclined surface that is inclined with respect to the axial direction and inclined forward with respect to the circumferential direction,
The weight body has a rear inclined surface that is inclined with respect to the axial direction and rearward with respect to the circumferential direction,
A mechanism in which the rotating member rotates when the rear inclined surface moves rearward and presses the front inclined surface .
前記出没部材は、前記第１カム溝に係合する第１係合部を有する、請求項１に記載の出没機構。 The rotating member has a first cam groove on the outer surface,
The projecting and retracting mechanism according to claim 1 , wherein the projecting and retracting member has a first engaging portion that engages with the first cam groove.
前記第１部分及び前記第２部分は、周方向に交互に配置されている、請求項２に記載の出没機構。 The first cam groove communicates with the first portion and extends obliquely with respect to the axial and circumferential directions so as to move forward toward one side in the circumferential direction. a second portion extending obliquely with respect to the axial direction and the circumferential direction so as to go rearward as the second portion goes toward the second portion;
The retraction mechanism according to claim 2 , wherein the first portion and the second portion are arranged alternately in the circumferential direction.
前記固定カム部材は、周方向に配列された複数の第２カム溝を内面に有し、
前記重量体は、前記第２カム溝に係合する第２係合部を有する、請求項１～３のいずれか一項に記載の出没機構。 further comprising a fixed cam member whose movement in the circumferential direction and the axial direction is restricted with respect to the shaft cylinder,
The fixed cam member has a plurality of second cam grooves arranged in the circumferential direction on the inner surface,
The retractable mechanism according to any one of claims 1 to 3 , wherein the weight body has a second engaging portion that engages with the second cam groove.
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| JP2008265260A (en) | 2007-04-22 | 2008-11-06 | Hitoshi Ishige | Shaking-out ball-point pen |
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| JPS4934189Y1 (en) * | 1970-01-16 | 1974-09-17 | ||
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| JPS57103893U (en) * | 1980-12-16 | 1982-06-26 | ||
| JPH0732137Y2 (en) * | 1988-07-18 | 1995-07-26 | 株式会社パイロット | Mechanism of cursive body appearance in compound writing instruments |
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| JP2008265260A (en) | 2007-04-22 | 2008-11-06 | Hitoshi Ishige | Shaking-out ball-point pen |
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