JP2019010844A - Ball-point pen - Google Patents

Ball-point pen Download PDF

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Publication number
JP2019010844A
JP2019010844A JP2017129987A JP2017129987A JP2019010844A JP 2019010844 A JP2019010844 A JP 2019010844A JP 2017129987 A JP2017129987 A JP 2017129987A JP 2017129987 A JP2017129987 A JP 2017129987A JP 2019010844 A JP2019010844 A JP 2019010844A
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Prior art keywords
ball
cylindrical body
support member
writing
inner hole
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大屋 誠
Makoto Oya
誠 大屋
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Pilot Ink Co Ltd
Pilot Corp
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Pilot Ink Co Ltd
Pilot Corp
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Priority to JP2017129987A priority Critical patent/JP2019010844A/en
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Abstract

To provide a ball-point pen which can obtain appropriate ink discharge property without causing shortage of a discharge amount of ink and excessive outflow of ink irrespective of magnitude of a writing pressure, can obtain stable ink discharge property also in continuous writing, and can obtain handwriting having different handwriting widths and intonation due to magnitude of the writing pressure.SOLUTION: A ball-accepting member 4 is a cylindrical body having an inner hole 4b penetrating in an axial direction, and a supporting member 5 is a cylindrical body having an inner hole 51 penetrating in the axial direction. The inner hole 4b end of the ball-accepting member 4 and the inner hole 51 of the supporting member 5 are communicated with each other. A regulation wall part 24 for regulating forward movement of the ball-accepting member 4 is formed on the inner surface of the cylindrical body 2. The forward movement of the ball-accepting member 4 is regulated by the regulation wall part 24 when writing is performed with a comparatively small writing pressure, and the supporting member 5 is compressed and deformed and the ball-accepting member 4 can be moved to the rear part when writing is performed with a comparatively large writing pressure.SELECTED DRAWING: Figure 2

Description

本発明は、ボールペンに関する。 The present invention relates to a ballpoint pen.

この種のボールペンにおいて、特許文献1には、先端小口部でボールを抱持するパイプ状チツプを取り付けたチツプホルダーの中心孔内に、前記ボールの後側にその先端が当接する合成樹脂製棒状体、該棒状体を介し前記ボールを前方に付勢する弾性含液体、該弾性含液体とインキ接続するインキ誘導部材を順次挿入してなるとともに、少なくとも前記ボールがその先端を前記パイプ状チツプの先端と面一となる迄後方変位することを妨げないよう、前記パイプ状チツプの中心孔の少なくとも先部における径を前記ボールの径より大きく形成してなるボールペン先部が開示されている。 In this type of ballpoint pen, Patent Document 1 discloses a synthetic resin rod-like shape in which the tip abuts against the rear side of the ball in the center hole of a chip holder to which a pipe-like chip that holds the ball at the tip end is attached. A body, an elastic liquid containing the ball forwardly urged through the rod-shaped body, and an ink guiding member for ink connection with the elastic liquid, and at least the ball has its tip at the end of the pipe-shaped chip. A ballpoint pen tip is disclosed in which the diameter of at least the tip of the center hole of the pipe-shaped chip is larger than the diameter of the ball so as not to prevent rearward displacement until it is flush with the tip.

実公平2−306号公報Japanese Utility Model Publication 2-306

前記特許文献1のボールペンは、筆記時、弾性含侵体に保持されたインキが弾性含侵体の収縮により前方に移行する構造である。
そのため、前記特許文献1のボールペンは、比較的小さな筆圧で筆記した際、弾性含侵体の圧縮変形量が少なく、チップ先端からのインキ吐出量が不足し、筆跡途切れが生じるおそれがある。また、前記特許文献1のボールペンは、比較的大きな筆圧で筆記した際、弾性含侵体が極端に大きく圧縮されて、インキがチップ先端から過剰に吐出するおそれがある。
The ballpoint pen of Patent Document 1 has a structure in which the ink held on the elastic impregnated body moves forward due to contraction of the elastic impregnated body at the time of writing.
For this reason, when the ballpoint pen of Patent Document 1 is written with a relatively small writing pressure, the amount of compressive deformation of the elastic inclusion body is small, the amount of ink discharged from the tip of the tip is insufficient, and there is a possibility that the handwriting will be interrupted. Further, when the ballpoint pen of Patent Document 1 is written with a relatively high writing pressure, the elastic impregnated body is extremely compressed and ink may be excessively ejected from the tip of the chip.

また、前記特許文献1のボールペンは、一定の筆圧でチップ先端を紙面から離さず連続して筆記した場合、チップ先端からのインキ吐出量が次第に不足し、筆跡途切れが生じるおそれがある。 Further, in the ballpoint pen of Patent Document 1, when writing continuously without separating the tip end from the paper surface with a constant writing pressure, the ink discharge amount from the tip end gradually becomes insufficient, and there is a possibility that handwriting breaks occur.

本発明は、前記従来の問題点を解決するものであって、筆圧の大小にかかわらず、インキの吐出量不足やインキの過剰流出のおそれがなく、適正なインキ吐出性が得られるとともに、連続筆記においても安定したインキ吐出性が得られ、しかも、筆圧の大小により筆跡幅の異なる抑揚のある筆跡が得られるボールペンを提供しようとするものである。
本発明で、「前」とは、ペン先のボール側を指し、「後」とは、その反対側を指す。
The present invention solves the above-mentioned conventional problems, regardless of the magnitude of writing pressure, there is no risk of insufficient ink discharge amount or excessive outflow of ink, and appropriate ink discharge properties are obtained, It is an object of the present invention to provide a ballpoint pen that can provide stable ink ejection even in continuous writing, and can obtain handwriting with inflections having different handwriting widths depending on the magnitude of writing pressure.
In the present invention, “front” refers to the ball side of the nib, and “rear” refers to the opposite side.

本願の第1の発明は、金属製の筒体2の前端に形成された内向きの前端縁部3と、前記前端縁部3の後方の筒体2内に前後方向に移動可能に収容され且つ前端にボール受け座4aを有する受け座部材4と、前記前端縁部3と前記受け座部材4との間で回転可能に抱持されたボール6と、前記筒体2内の前記受け座部材4の後方に配置され、前記受け座部材4の後端を支持する弾性変形可能な支持部材5と、を備えたボールペンであって、前記受け座部材4が、軸方向に貫通する内孔4bを備えた筒状体であり、前記支持部材5が、軸方向に貫通する内孔51を備えた、前記受け座部材4より軟質の材料からなる筒状体であり、前記受け座部材4の後端と前記支持部材5の前端とが当接され、前記受け座部材4の内孔4bと前記支持部材5の内孔51が連通されてなり、前記筒体2の内面に、前記受け座部材4の前方移動を規制する規制壁部24が形成され、前記筒体2の内面または前記筒体2の後端部が保持されるペン先保持部7の内面に、前記支持部材5の後端が係止される係止壁部25が形成され、比較的小さな筆圧で筆記した際、受け座部材4の前方移動が規制壁部24により規制された状態にあり、比較的大きな筆圧で筆記した際、前記支持部材5が圧縮変形して、前記受け座部材4が後方に移動可能に構成されることを要件とする。 The first invention of the present application is housed in an inward front end edge portion 3 formed at the front end of a metal cylinder 2 and in a cylinder body 2 behind the front end edge portion 3 so as to be movable in the front-rear direction. A receiving member 4 having a ball receiving seat 4a at the front end, a ball 6 rotatably held between the front end edge 3 and the receiving seat member 4, and the receiving seat in the cylindrical body 2 An elastically deformable support member 5 disposed behind the member 4 and supporting a rear end of the receiving seat member 4, wherein the receiving seat member 4 is an inner hole penetrating in the axial direction. 4b, the support member 5 is a cylindrical body made of a softer material than the receiving seat member 4 provided with an inner hole 51 penetrating in the axial direction, and the receiving seat member 4 The rear end of the support member 5 is brought into contact with the front end of the support member 5 so that the inner hole 4b of the seat member 4 and the support member 5 51 is formed, and on the inner surface of the cylindrical body 2, a restriction wall portion 24 that restricts the forward movement of the seat member 4 is formed, and the inner surface of the cylindrical body 2 or the rear end portion of the cylindrical body 2 is formed. A locking wall portion 25 is formed on the inner surface of the pen tip holding portion 7 to hold the rear end of the support member 5. When the writing is performed with a relatively small writing pressure, the receiving member 4 moves forward. Is restricted by the restriction wall portion 24, and when the writing is performed with a relatively large writing pressure, the support member 5 is compressed and deformed, and the receiving member 4 is configured to be movable rearward. And

前記第1の発明のボールペン1は、前記受け座部材4が、軸方向に貫通する内孔4bを備えた筒状体であり、前記支持部材5が、軸方向に貫通する内孔51を備えた、前記受け座部材4より軟質の材料からなる筒状体であり、前記受け座部材4の後端と前記支持部材5の前端とが当接され、前記受け座部材4の内孔4bと前記支持部材5の内孔51が連通されてなり、前記筒体2の内面に、前記受け座部材4の前方移動を規制する規制壁部24が形成され、前記筒体2の内面または前記筒体2の後端部が保持されるペン先保持部7の内面に、前記支持部材5の後端が係止される係止壁部25が形成され、比較的小さな筆圧で筆記した際、受け座部材4の前方移動が規制壁部24により規制された状態にあり、比較的大きな筆圧で筆記した際、前記支持部材5が圧縮変形して、前記受け座部材4が後方に移動可能に構成されることにより、筆圧の大小にかかわらず、インキの吐出量不足やインキの過剰流出のおそれがなく、適正なインキ吐出性が得られるとともに、連続筆記においても安定したインキ吐出性が得られ、しかも、筆圧の大小により筆跡幅の異なる抑揚のある筆跡が得られる。 In the ballpoint pen 1 of the first invention, the seat member 4 is a cylindrical body provided with an inner hole 4b penetrating in the axial direction, and the support member 5 is provided with an inner hole 51 penetrating in the axial direction. Further, it is a cylindrical body made of a softer material than the receiving seat member 4, the rear end of the receiving seat member 4 and the front end of the support member 5 are in contact with each other, and the inner hole 4 b of the receiving seat member 4 An inner hole 51 of the support member 5 is communicated, and a restriction wall portion 24 for restricting forward movement of the seat member 4 is formed on the inner surface of the cylindrical body 2, and the inner surface of the cylindrical body 2 or the cylinder On the inner surface of the pen tip holding portion 7 on which the rear end portion of the body 2 is held, a locking wall portion 25 is formed on which the rear end of the support member 5 is locked. When writing with a relatively small writing pressure, When the forward movement of the receiving seat member 4 is regulated by the regulating wall portion 24 and written with a relatively large writing pressure, The support member 5 is compressed and deformed, and the receiving seat member 4 is configured to be movable rearward, so that there is no risk of insufficient ink discharge or excessive ink outflow regardless of the magnitude of the writing pressure. Appropriate ink ejection properties can be obtained, stable ink ejection properties can be obtained even in continuous writing, and handwriting with inflections with different handwriting widths can be obtained depending on the magnitude of the writing pressure.

本願の第2の発明は、前記第1の発明のボールペン1において、前記受け座部材4の外面が前記筒体2の内面を前後方向に摺動可能に構成されることを要件とする。 The second invention of the present application is that, in the ballpoint pen 1 of the first invention, the outer surface of the seat member 4 is configured to be slidable in the front-rear direction on the inner surface of the cylindrical body 2.

前記第2の発明のボールペン1は、前記受け座部材4の外面が前記筒体2の内面を前後方向に摺動可能に構成されることにより、筆記時、ボール受け座4aが筒体2の軸心から大きく外れることがないため、ボール6の安定した回転が得られる。 In the ballpoint pen 1 of the second invention, the outer surface of the receiving seat member 4 is configured to be slidable in the front-rear direction on the inner surface of the cylindrical body 2. Since it does not deviate significantly from the axis, stable rotation of the ball 6 can be obtained.

本願の第3の発明は、前記第1または第2の発明のボールペン1において、前記支持部材5が、非多孔質の合成樹脂からなることを要件とする。 The third invention of the present application requires that, in the ballpoint pen 1 of the first or second invention, the support member 5 is made of a non-porous synthetic resin.

前記第3の発明のボールペン1は、前記支持部材5が、非多孔質の合成樹脂からなることにより、より一層、筆圧の大小にかかわらず、インキの吐出量不足やインキの過剰流出のおそれがなく、適正なインキ吐出性が得られる。 In the ballpoint pen 1 of the third invention, the support member 5 is made of a non-porous synthetic resin, so that there is a risk of insufficient ink discharge amount or excessive ink discharge regardless of the writing pressure. And proper ink ejection properties are obtained.

本発明のボールペンは、筆圧の大小にかかわらず、インキの吐出量不足やインキの過剰流出のおそれがなく、適正なインキ吐出性が得られるとともに、連続筆記においても安定したインキ吐出性が得られ、しかも、筆圧の大小により筆跡幅の異なる抑揚のある筆跡が得られる。 The ballpoint pen of the present invention has no risk of insufficient ink discharge or excessive ink outflow regardless of the writing pressure, and can provide proper ink discharge and stable ink discharge even in continuous writing. Moreover, it is possible to obtain handwriting with intonation with different handwriting widths depending on the magnitude of the writing pressure.

本発明の実施の形態の非筆記状態を示す要部縦断面図である。It is a principal part longitudinal cross-sectional view which shows the non-writing state of embodiment of this invention. 図1の要部拡大縦断面図である。It is a principal part expanded longitudinal cross-sectional view of FIG. 図2のA−A線拡大断面図である。It is an AA line expanded sectional view of FIG. 図1のボールペンを用いて小さな筆圧で筆記した際の要部拡大縦断面図である。It is a principal part expanded longitudinal sectional view at the time of writing with a small writing pressure using the ball-point pen of FIG. 図1のボールペンを用いて大きな筆圧で筆記した際の要部拡大縦断面図である。FIG. 2 is an enlarged vertical cross-sectional view of a main part when writing with a large writing pressure using the ballpoint pen of FIG. 1.

本発明の実施の形態を図1乃至図5に示す。
本実施の形態のボールペン1は、前端に回転可能にボール6が抱持された金属製の筒体2と、該筒体2を前端部に保持する合成樹脂製のペン先保持部7とを備える。
An embodiment of the present invention is shown in FIGS.
The ballpoint pen 1 of the present embodiment includes a metal cylinder 2 having a ball 6 held rotatably at the front end, and a pen tip holding part 7 made of a synthetic resin that holds the cylinder 2 at the front end. Prepare.

・筒体
筒体2は、金属製(例えば、SUS304等のオーステナイト系のステンレス鋼製)の円筒状体からなる。
前記筒体2は、直円筒状の小径部21と、前記小径部21より大きな外径を有する直円筒状の大径部22と、前記小径部21と前記大径部22とを接続し且つ後方に向かい次第に拡径するテーパ部23と、を備える。前記小径部21、前記テーパ部23、及び前記大径部22が、一体に形成される。
The cylindrical body 2 is made of a cylindrical body made of metal (for example, made of austenitic stainless steel such as SUS304).
The cylindrical body 2 connects the straight cylindrical small diameter portion 21, the straight cylindrical large diameter portion 22 having an outer diameter larger than the small diameter portion 21, the small diameter portion 21 and the large diameter portion 22, and And a tapered portion 23 that gradually increases in diameter toward the rear. The small diameter portion 21, the tapered portion 23, and the large diameter portion 22 are integrally formed.

前記筒体2の前端部(前記小径部21の前端部)には、内向きの環状の内向突起よりなる前端縁部3が一体に形成される。前記前端縁部3の最小内径は、ボール6の直径より小さく設定される。前記筒体2の前端部(前記小径部21の前端部)の内径は、ボール6が回転可能に抱持されるよう、ボール6より僅かに大きく設定される。 A front end edge 3 made of an inward annular inward projection is integrally formed at the front end of the cylindrical body 2 (the front end of the small diameter portion 21). The minimum inner diameter of the front edge 3 is set smaller than the diameter of the ball 6. The inner diameter of the front end portion of the cylindrical body 2 (the front end portion of the small diameter portion 21) is set slightly larger than the ball 6 so that the ball 6 is rotatably held.

テーパ部23の内面によって、受け座部材4の傾斜面部43が当接可能な規制壁部24が構成される。大径部22の内面には、内向突起が一体に形成され、内向突起により、支持部材5が当接可能な係止壁部25が構成される。前記係止壁部25は、環状の内向突起、または複数の周状に分散配置された複数の内向突起が挙げられる。 The inner surface of the taper portion 23 constitutes a regulating wall portion 24 on which the inclined surface portion 43 of the receiving seat member 4 can abut. An inward projection is integrally formed on the inner surface of the large-diameter portion 22, and the locking wall portion 25 with which the support member 5 can abut is configured by the inward projection. Examples of the locking wall portion 25 include an annular inward projection or a plurality of inward projections distributed in a plurality of circumferential shapes.

・ボール
ボール6の材質は、特に限定されないが、一般に金属またはセラミックスからなるものが用いられる。前記ボール6は、例えば、炭化タングステン、酸化ジルコニウム、酸化アルミニウム、酸化ケイ素、炭化ケイ素などのセラミックスやステンレス鋼などの金属が用いられる。また、前記ボール6は、セラミックスと金属性結合材とからなる超硬合金を用いてもよい。このような超硬合金としては、タングステンカーバイトと、コバルトまたはニッケルなどの金属性結合材とからなるものが知られている。
The material of the ball ball 6 is not particularly limited, but generally a material made of metal or ceramics is used. The ball 6 is made of, for example, ceramics such as tungsten carbide, zirconium oxide, aluminum oxide, silicon oxide, silicon carbide, or metals such as stainless steel. The ball 6 may be a cemented carbide made of ceramics and a metallic binder. As such a cemented carbide, one made of tungsten carbide and a metallic binder such as cobalt or nickel is known.

ボール6は、直径0.3mm〜2.0mmの範囲内のものが採用される。ボール6は、例えば、直径0.5mm、0.6mm、0.7mm、1.0mmのものが採用される。 A ball 6 having a diameter in the range of 0.3 mm to 2.0 mm is employed. For example, balls 6 having a diameter of 0.5 mm, 0.6 mm, 0.7 mm, and 1.0 mm are employed.

・受け座部材
受け座部材4は、金属製(例えば、SUS304等のオーステナイト系のステンレス鋼製)の円筒状体からなり、軸方向に内孔4bが貫通される。前記受け座部材4は、直円筒状の細径部41と、前記細径部41より大きな外径を有する直円筒状の太径部42と、前記細径部41と前記太径部42とを接続し且つ後方に向かい漸次拡径する傾斜面部43と、を備える。前記細径部41、前記傾斜面部43、及び前記太径部42が、一体に形成される。なお、前記受け座部材4の材質は、硬質の合成樹脂製(例えば、ポリアセタール樹脂製)であってもよい。
The receiving member 4 is made of a cylindrical body made of metal (for example, austenitic stainless steel such as SUS304), and the inner hole 4b is penetrated in the axial direction. The receiving member 4 includes a right cylindrical cylindrical diameter portion 41, a right cylindrical large diameter portion 42 having an outer diameter larger than that of the small diameter portion 41, the narrow diameter portion 41, and the large diameter portion 42. And an inclined surface portion 43 that gradually increases in diameter toward the rear. The small diameter portion 41, the inclined surface portion 43, and the large diameter portion 42 are integrally formed. The receiving member 4 may be made of a hard synthetic resin (for example, a polyacetal resin).

前記受け座部材4は、前端にボール受け座4aを備える。前記受け座部材4の前端部に、軸方向に延びる複数(例えば4本)のインキ流通溝4cが形成される。前記インキ流通溝4cの各々は、周方向に等間隔に配置される。前記インキ流通溝4cの各々は、軸方向前方及び径方向内方に開口される。本実施の形態では、径方向に貫通され、それにより、容易にインキ流通溝4cを形成できるとともに、ボール受け座4a近傍において潤沢にインキを保持することが可能となり、その結果、一層、ボール6への安定したインキ供給が可能となる。受け座部材4の外径は、支持部材5の外面と筒体2の内面と摺動可能な寸法に設定される。 The receiving seat member 4 includes a ball receiving seat 4a at the front end. A plurality of (for example, four) ink circulation grooves 4 c extending in the axial direction are formed at the front end portion of the receiving member 4. Each of the ink circulation grooves 4c is arranged at equal intervals in the circumferential direction. Each of the ink circulation grooves 4c is opened forward in the axial direction and radially inward. In the present embodiment, the ink is penetrated in the radial direction, whereby the ink circulation groove 4c can be easily formed, and the ink can be held in the vicinity of the ball receiving seat 4a. Stable ink supply to the printer becomes possible. The outer diameter of the seat member 4 is set to a dimension that allows sliding between the outer surface of the support member 5 and the inner surface of the cylindrical body 2.

・支持部材
支持部材5は、受け座部材4よりも軟質な材料からなり、例えば、軟質の合成樹脂、合成ゴム、または合成樹脂のエラストマー等により得られる。支持部材5は、弾性変形可能である。支持部材5は、円筒体または環状であり、内部に内孔51が軸方向に貫通される。支持部材5は、筒体2内に収容される。支持部材5の前端と受け座部材4の後端が当接され、それにより、支持部材5の内孔51と受け座部材4の内孔4bが連通される。支持部材5の前端と受け座部材4の後端とが環状に当接され、それにより、支持部材5の内孔51から受け座部材4の内孔4bへのスムーズなインキ流通が可能となる。
The support member support member 5 is made of a softer material than the receiving member 4 and is obtained from, for example, soft synthetic resin, synthetic rubber, or synthetic resin elastomer. The support member 5 can be elastically deformed. The support member 5 is a cylindrical body or a ring, and an inner hole 51 is penetrated in the axial direction. The support member 5 is accommodated in the cylindrical body 2. The front end of the support member 5 and the rear end of the receiving member 4 are brought into contact with each other, whereby the inner hole 51 of the supporting member 5 and the inner hole 4b of the receiving member 4 are communicated. The front end of the support member 5 and the rear end of the receiving member 4 are brought into contact with each other in an annular shape, thereby enabling smooth ink flow from the inner hole 51 of the supporting member 5 to the inner hole 4b of the receiving member 4. .

前記支持部材5の後端は、前記筒体2の大径部22の内面に形成された係止壁部25に係止され、前記支持部材5の後方移動が阻止される。尚、前記支持部材5の後端が当接可能な係止壁部25はペン先保持部7内面に形成される構成でもよい。前記支持部材5の前端は、受け座部材4の後端に当接される。前記支持部材5は、筒体2の後端開口部内面に圧入される。 The rear end of the support member 5 is locked to a locking wall portion 25 formed on the inner surface of the large-diameter portion 22 of the cylindrical body 2 so that the rear movement of the support member 5 is prevented. The locking wall portion 25 with which the rear end of the support member 5 can abut may be formed on the inner surface of the pen tip holding portion 7. The front end of the support member 5 is brought into contact with the rear end of the seat member 4. The support member 5 is press-fitted into the inner surface of the rear end opening of the cylindrical body 2.

筆記時、筆圧によりボール6が後方に押圧されると、受け座部材4が後退されるとともに、支持部材5が前後方向に圧縮弾性変形される。弾性変形可能な軟質材料よりなる支持部材5によって、筆記時、ソフトな筆記感と抑揚のある筆跡が得られる。
本実施の形態は、非筆記時、前端縁部3内面とボール受け座4aとにボール3が同時に接触しない構成である。
図4の示すように、比較的小さな筆圧で筆記した場合、弾発部材8の前方付勢に抗してボール6が後退され、受け座部材4の前方移動が規制壁部24に規制された状態にあり、ボール6と前端縁部3との比較的小さな隙間から比較的少量のインキが吐出され、比較的細幅の筆跡が得られる。
図5の示すように、比較的大きな筆圧で筆記した場合、受け座部材4が後退し、支持部材5が圧縮変形し、受け座部材4と規制壁部24との当接が解除され、ボール6と前端縁部3との比較的大きな隙間から比較的多量のインキが吐出され、比較的太幅の筆跡が得られる。
At the time of writing, when the ball 6 is pressed backward by writing pressure, the receiving member 4 is retracted and the support member 5 is compressed and elastically deformed in the front-rear direction. With the support member 5 made of an elastically deformable soft material, a handwriting with a soft writing feeling and intonation can be obtained during writing.
In the present embodiment, the ball 3 does not contact the inner surface of the front end edge 3 and the ball receiving seat 4a at the same time when not writing.
As shown in FIG. 4, when writing with a relatively small writing pressure, the ball 6 is retracted against the forward bias of the elastic member 8, and the forward movement of the receiving member 4 is restricted by the restriction wall 24. In this state, a relatively small amount of ink is ejected from a relatively small gap between the ball 6 and the front edge portion 3, and a relatively narrow handwriting is obtained.
As shown in FIG. 5, when writing with a relatively large writing pressure, the receiving member 4 retreats, the support member 5 is compressed and deformed, and the contact between the receiving member 4 and the restriction wall portion 24 is released, A relatively large amount of ink is ejected from a relatively large gap between the ball 6 and the front edge 3, and a relatively thick handwriting is obtained.

・ペン先保持部
ペン先保持部7は、合成樹脂の成形体からなり、前端部に筒体2が保持可能な保持孔71を備える。前記保持孔71の底部には、筒体2の後端が当接可能な当接壁部72が一体に形成される。前記保持孔71の後方にはインキ流通孔が連設される。
ペン先保持部7の内面(インキ流通孔の内面)には、ボール6を前方に付勢する弾発部材8が係止される弾発部材係止部73が形成される。弾発部材係止部73は、内向突起よりなる。前記弾発部材係止部73は、環状の内向突起、または複数の周状に分散配置された複数の内向突起が挙げられる。
-Pen point holding part The pen point holding part 7 is made of a synthetic resin molded body, and includes a holding hole 71 at the front end portion where the cylindrical body 2 can be held. A contact wall portion 72 with which the rear end of the cylindrical body 2 can contact is integrally formed at the bottom portion of the holding hole 71. An ink circulation hole is continuously provided behind the holding hole 71.
On the inner surface of the pen tip holding portion 7 (the inner surface of the ink circulation hole), a resilient member locking portion 73 is formed on which the resilient member 8 that urges the ball 6 forward is locked. The resilient member locking portion 73 is an inward projection. Examples of the elastic member locking portion 73 include an annular inward projection or a plurality of inward projections distributed in a plurality of circumferential shapes.

・弾発部材
弾発部材8は、圧縮コイルスプリングのコイル部82と、該コイル部82の前端より前方に延びるストレート部81とからなる。前記ストレート部81の前端がボール6の後面に当接され、前記コイル部82の後端が弾発部材係止部73に係止される。
The elastic member 8 includes a coil portion 82 of a compression coil spring and a straight portion 81 that extends forward from the front end of the coil portion 82. The front end of the straight portion 81 is brought into contact with the rear surface of the ball 6, and the rear end of the coil portion 82 is locked to the resilient member locking portion 73.

本実施の形態のボールペン1は、前記受け座部材4が、軸方向に貫通する内孔4bを備えた筒状体であり、前記支持部材5が、軸方向に貫通する内孔51を備えた、前記受け座部材4より軟質の材料からなる筒状体であり、前記受け座部材4の後端と前記支持部材5の前端とが当接され、前記受け座部材4の内孔4bと前記支持部材5の内孔51が連通されてなり、前記筒体2の内面に、前記受け座部材4の前方移動を規制する規制壁部24が形成され、前記筒体2の内面または前記筒体2の後端部が保持されるペン先保持部7の内面に、前記支持部材5の後端が係止される係止壁部25が形成され、ボール6を前方に付勢する弾発部材8が、前記受け座部材4の内孔4b及び前記支持部材5の内孔51を貫通して設けられ、比較的小さな筆圧で筆記した際、弾発部材8の前方付勢に抗してボール6が後退され、受け座部材4の前方移動が規制壁部24により規制された状態にあり、比較的大きな筆圧で筆記した際、前記弾発部材8及び前記支持部材5が圧縮変形して、前記受け座部材4が後方に移動可能に構成されることにより、筆圧の大小にかかわらず、インキの吐出量不足やインキの過剰流出のおそれがなく、適正なインキ吐出性が得られるとともに、連続筆記においても安定したインキ吐出性が得られ、しかも、筆圧の大小により筆跡幅の異なる抑揚のある筆跡が得られる。 In the ballpoint pen 1 of the present embodiment, the seat member 4 is a cylindrical body provided with an inner hole 4b penetrating in the axial direction, and the support member 5 is provided with an inner hole 51 penetrating in the axial direction. The cylindrical member is made of a softer material than the receiving member 4, the rear end of the receiving member 4 and the front end of the support member 5 are in contact with each other, and the inner hole 4 b of the receiving member 4 The inner hole 51 of the support member 5 is communicated, and a regulation wall portion 24 for regulating the forward movement of the receiving seat member 4 is formed on the inner surface of the cylindrical body 2, and the inner surface of the cylindrical body 2 or the cylindrical body A resilient wall member 25 is formed on the inner surface of the pen tip retaining part 7 on which the rear end part 2 is retained, and the rear end of the support member 5 is retained to urge the ball 6 forward. 8 is provided through the inner hole 4b of the receiving member 4 and the inner hole 51 of the support member 5, and is a relatively small brush. The ball 6 is retracted against the forward urging of the elastic member 8 and the forward movement of the receiving member 4 is restricted by the restriction wall 24, and writing is performed with a relatively large writing pressure. In this case, the elastic member 8 and the support member 5 are compressed and deformed, and the receiving member 4 is configured to be movable rearward, so that the ink discharge amount is insufficient regardless of the magnitude of the writing pressure. There is no risk of excessive ink spilling, and proper ink ejection properties are obtained. In addition, stable ink ejection properties are obtained even during continuous writing, and handwriting with inflections with different handwriting widths can be obtained depending on the magnitude of writing pressure. .

本実施の形態のボールペン1は、前記受け座部材4の外面が前記筒体2の内面を前後方向に摺動可能に構成されることにより、筆記時、ボール受け座4aが筒体2の軸心から大きく外れることがないため、ボール6の安定した回転が得られる。 The ballpoint pen 1 of the present embodiment is configured such that the outer surface of the receiving member 4 is slidable in the front-rear direction on the inner surface of the cylindrical body 2, so that the ball receiving seat 4 a is the axis of the cylindrical body 2 during writing. Since it does not deviate greatly from the mind, the ball 6 can be rotated stably.

本実施の形態のボールペン1は、前記支持部材5が、非多孔質の合成樹脂からなることにより、より一層、筆圧の大小にかかわらず、インキの吐出量不足やインキの過剰流出のおそれがなく、適正なインキ吐出性が得られる。 In the ballpoint pen 1 of the present embodiment, the support member 5 is made of a non-porous synthetic resin, so that there is a risk of insufficient ink discharge or excessive ink outflow regardless of the magnitude of the writing pressure. And proper ink ejection properties can be obtained.

尚、本発明のボールペン1は、弾発部材8を設けない構成でもよい。 The ballpoint pen 1 of the present invention may have a configuration in which the bullet member 8 is not provided.

1 ボールペン
2 筒体
21 小径部
22 大径部
23 テーパ部
24 規制壁部
25 係止壁部
3 前端縁部
4 受け座部材
4a ボール受け座
4b 内孔
4c インキ流通溝
41 細径部
42 太径部
43 傾斜面部
5 支持部材
51 内孔
6 ボール
7 ペン先保持部
71 保持孔
72 当接壁部
73 弾発部材係止部
8 弾発部材
81 ストレート部
82 コイル部
DESCRIPTION OF SYMBOLS 1 Ball-point pen 2 Cylindrical body 21 Small diameter part 22 Large diameter part 23 Tapered part 24 Restriction wall part 25 Locking wall part 3 Front edge part 4 Receiving seat member 4a Ball receiving seat 4b Inner hole 4c Ink distribution groove 41 Small diameter part 42 Large diameter Part 43 Inclined surface part 5 Support member
51 Inner hole 6 Ball 7 Pen tip holding part 71 Holding hole 72 Abutting wall part 73 Bounce member locking part 8 Bounce member 81 Straight part 82 Coil part

Claims (3)

金属製の筒体の前端に形成された内向きの前端縁部と、
前記前端縁部の後方の筒体内に前後方向に移動可能に収容され且つ前端にボール受け座を有する受け座部材と、
前記前端縁部と前記受け座部材との間で回転可能に抱持されたボールと、
前記筒体内の前記受け座部材の後方に配置され、前記受け座部材の後端を支持する弾性変形可能な支持部材と、を備えたボールペンであって、
前記受け座部材が、軸方向に貫通する内孔を備えた筒状体であり、
前記支持部材が、軸方向に貫通する内孔を備えた、前記受け座部材より軟質の材料からなる筒状体であり、
前記受け座部材の後端と前記支持部材の前端とが当接され、前記受け座部材の内孔と前記支持部材の内孔が連通されてなり、
前記筒体の内面に、前記受け座部材の前方移動を規制する規制壁部が形成され、
前記筒体の内面または前記筒体の後端部が保持されるペン先保持部の内面に、前記支持部材の後端が係止される係止壁部が形成され、
比較的小さな筆圧で筆記した際、前記受け座部材の前方移動が規制壁部により規制された状態にあり、
比較的大きな筆圧で筆記した際、前記支持部材が圧縮変形して、前記受け座部材が後方に移動可能に構成されることを特徴とするボールペン。
An inward front end edge formed at the front end of the metal cylinder,
A receiving member that is housed in a cylinder body behind the front edge so as to be movable in the front-rear direction and has a ball receiving seat at the front end;
A ball held rotatably between the front edge and the seat member;
An elastically deformable support member disposed behind the receiving member in the cylinder and supporting a rear end of the receiving member;
The seat member is a tubular body having an inner hole penetrating in the axial direction;
The support member is a cylindrical body made of a softer material than the receiving member, with an inner hole penetrating in the axial direction.
The rear end of the seat member and the front end of the support member are in contact with each other, and the inner hole of the seat member and the inner hole of the support member are communicated,
On the inner surface of the cylindrical body, a regulating wall portion that regulates forward movement of the seat member is formed,
On the inner surface of the cylindrical body or the inner surface of the pen tip holding part that holds the rear end portion of the cylindrical body, a locking wall portion that locks the rear end of the support member is formed,
When writing with a relatively small writing pressure, the forward movement of the seat member is in a state regulated by the regulation wall,
A ballpoint pen characterized in that when the writing is performed with a relatively large writing pressure, the support member is compressed and deformed, and the receiving member is movable rearward.
前記受け座部材の外面が前記筒体の内面を前後方向に摺動可能に構成される請求項1に記載のボールペン。 The ballpoint pen according to claim 1, wherein the outer surface of the seat member is configured to be slidable in the front-rear direction on the inner surface of the cylindrical body. 前記支持部材が、非多孔質の合成樹脂からなる請求項1または2に記載のボールペン。
The ballpoint pen according to claim 1, wherein the support member is made of a non-porous synthetic resin.
JP2017129987A 2017-06-30 2017-06-30 Ball-point pen Pending JP2019010844A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023074505A1 (en) 2021-10-29 2023-05-04 三菱鉛筆株式会社 Ballpoint pen refill and ballpoint pen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023074505A1 (en) 2021-10-29 2023-05-04 三菱鉛筆株式会社 Ballpoint pen refill and ballpoint pen

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