JP2013052633A - Mounting structure of pressing operation part, tail plug, and shaft tube - Google Patents

Mounting structure of pressing operation part, tail plug, and shaft tube Download PDF

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JP2013052633A
JP2013052633A JP2011193417A JP2011193417A JP2013052633A JP 2013052633 A JP2013052633 A JP 2013052633A JP 2011193417 A JP2011193417 A JP 2011193417A JP 2011193417 A JP2011193417 A JP 2011193417A JP 2013052633 A JP2013052633 A JP 2013052633A
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tail plug
pressing
press
shaft tube
shaft
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JP2011193417A
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Yoshiaki Furuya
圭章 古屋
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Pentel Corp
ぺんてる株式会社
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Priority to JP2011193417A priority Critical patent/JP2013052633A/en
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Abstract

PROBLEM TO BE SOLVED: To solve such a problem that when an engaging part of a stick holder is arranged in the guide slit under the projection, and when a projection of the guide cylinder and an annular concave part of the outer cylinder are pressed and fitted, an engaging part of the stick holder inhibits the deflection to the center direction of the guide slit, and damages the outer cylinder and the guide cylinder, and generate cracks as a result.SOLUTION: There is provided a mounting structure of a pressing operation part, a tail plug, and a shaft tube. In the mounting structure of the pressing operation part, the tail plug, and the shaft tube, the pressing operation part is mounted to the tail plug movable anteroposteriorly, while forming an elastic changeable locking projection to the pressing operation part, a through-hole to engage the locking projection is formed in the tail plug, and a press fitting projection is formed near the through-hole of the tail plug, and moreover, the pressing operation part is biased toward the rear side by the resilient member.

Description

本発明は、押圧操作部と尾栓と軸筒の取り付け構造に関する。   The present invention relates to a mounting structure for a pressing operation portion, a tail plug, and a shaft tube.
1例として、棒状物繰り出し容器は、外筒と、外筒に回転可能に嵌挿され、軸方向に伸びる案内スリットを有する案内筒と、案内筒に嵌挿されると共に、案内スリットに摺動可能に係合する係合部を有し、棒状物を保持する棒状物ホルダと、外筒と案内筒との間の相対回転を棒状物ホルダの軸方向の移動に変換するねじ部とを備えた棒状物繰り出し容器がある。その棒状物繰り出し容器の外筒と案内筒の圧入手段としては、案内筒を外筒の後方から挿入すると共に、外筒の後端と回転つまみ部とを当接させ、かつ、外筒の突起と対向する位置に設けられた環状凹部と突起を係合させることによって組み付けられている。   As an example, the rod-shaped object feeding container is inserted into the outer cylinder, rotatably inserted into the outer cylinder, having a guide slit extending in the axial direction, and inserted into the guide cylinder, and slidable into the guide slit. A rod-shaped object holder that holds the rod-shaped object, and a screw part that converts the relative rotation between the outer cylinder and the guide cylinder into an axial movement of the rod-shaped object holder. There is a stick-shaped object feeding container. As a means for press-fitting the outer cylinder and guide cylinder of the rod-like object feeding container, the guide cylinder is inserted from the rear of the outer cylinder, the rear end of the outer cylinder and the rotary knob portion are brought into contact with each other, and the protrusion of the outer cylinder Are assembled by engaging a projection and an annular recess provided at a position facing each other.
実開平10−18410-184
上記の従来技術にあっては、案内筒の突起と外筒の環状凹部が圧入される際、前記突起の下の案内スリットに棒状物ホルダの係合部が配置されていると、その棒状物ホルダの係合部が案内スリットの中心方向への撓みを阻害することになる。その結果、案内筒の突起が外筒の環状凹部へ到達せず、圧入不良になる、もしくは、外筒の環状凹部、案内筒の突起、または案内筒の突起が圧入開始箇所の外筒後端部から、圧入完了箇所の環状凹部に到達するまでの部分に負荷がかかり、その外筒ないし、案内筒が破損してしまったり、クラックが発生してしまったりする可能性がある。   In the above prior art, when the protrusion of the guide tube and the annular recess of the outer tube are press-fitted, if the engaging portion of the rod-shaped object holder is disposed in the guide slit under the protrusion, the rod-shaped object The engaging portion of the holder obstructs the bending of the guide slit toward the center. As a result, the projection of the guide cylinder does not reach the annular recess of the outer cylinder, resulting in poor press-fitting, or the annular recess of the outer cylinder, the projection of the guide cylinder, or the projection of the guide cylinder is the rear end of the outer cylinder at the press-fitting start location. There is a possibility that a load is applied to the portion from the portion until it reaches the annular recess at the press-fitting completion location, and the outer cylinder or the guide cylinder may be damaged or a crack may occur.
本発明は、押圧操作部と尾栓と軸筒の取り付け構造であって、押圧操作部を尾栓に対して、前後動可能に取り付けると共に、押圧操作部に弾性変化可能な係止突起を形成する一方、前記尾栓には、前記係止突起と係合する貫通孔を形成し、また、前記尾栓の貫通孔の近傍には圧入突起を形成し、さらに、前記押圧操作部を弾撥部材によって後方に向けて付勢したことを要旨とする。   The present invention is a mounting structure of a pressing operation portion, a tail plug, and a shaft tube, and the pressing operation portion is attached to the tail plug so as to be movable back and forth, and a locking projection capable of elastic change is formed on the pressing operation portion. On the other hand, the tail plug is formed with a through-hole that engages with the locking projection, and a press-fitting projection is formed in the vicinity of the through-hole of the tail plug, and the pressing operation portion is repelled. The gist is that the member is biased backward.
本発明は、押圧操作部と尾栓と軸筒の取り付け構造であって、押圧操作部を尾栓に対して、前後動可能に取り付けると共に、押圧操作部に弾性変化可能な係止突起を形成する一方、前記尾栓には、前記係止突起と係合する貫通孔を形成し、また、前記尾栓の貫通孔の近傍には圧入突起を形成し、さらに、前記押圧操作部を弾撥部材によって後方に向けて付勢したので、貫通孔が十分に撓み、軸筒や尾栓の破損やクラックを防止することができる。   The present invention is a mounting structure of a pressing operation portion, a tail plug, and a shaft tube, and the pressing operation portion is attached to the tail plug so as to be movable back and forth, and a locking projection capable of elastic change is formed on the pressing operation portion. On the other hand, the tail plug is formed with a through-hole that engages with the locking projection, and a press-fitting projection is formed in the vicinity of the through-hole of the tail plug, and the pressing operation portion is repelled. Since the member is urged rearward, the through hole is sufficiently bent, and the shaft tube and the tail plug can be prevented from being damaged or cracked.
第1例を示す外観図。The external view which shows a 1st example. 図1の縦断面図。The longitudinal cross-sectional view of FIG. 要部外観図。FIG. 図3の縦断面図。The longitudinal cross-sectional view of FIG. 図4の横断面図。FIG. 5 is a cross-sectional view of FIG. 4. 図3の左側面縦断面図。FIG. 4 is a left side vertical sectional view of FIG. 3. 押圧操作部材と尾栓の縦断面斜視図。The longitudinal cross-sectional perspective view of a press operation member and a tail plug. 押圧操作部材と尾栓の外観図。The external view of a press operation member and a tail plug. 図8の縦断面図。The longitudinal cross-sectional view of FIG. 前軸セットと後軸セットを分離した縦断面図。The longitudinal cross-sectional view which isolate | separated the front axis set and the rear axis set. 図1の縦断面図の後端部詳細図。The rear end detail drawing of the longitudinal cross-sectional view of FIG. 図11のD部詳細図Part D detail view of FIG. 後軸セットの外観図。External view of rear axle set. 第2例を示す後軸セットの縦断面図。The longitudinal cross-sectional view of the rear-axis set which shows a 2nd example. 図14の分解外観図。The exploded external view of FIG.
第1例を図1〜図13に示し説明する。軸体内にボールペン体を配置すると共に、そのボールペン体を出没可能に配置した、所謂、出没式の筆記具である。比較的硬質な樹脂材質から形成された軸筒1の表面であって、把持する部分には、比較的軟質な樹脂材質(軟質部材2)が被覆されている。前記軸筒1を形成する比較的硬質な樹脂材質の1例としては、本例においてはポリカーボネートを使用しているが、ポリエチレンテレフタレートやアクリル、アクリロニトリルブタジエンスチレン共重合体(ABS)、アクリロニトリルスチレン共重合体(AS)、ポリプロピレンなどが挙げられる。尚、軸筒1の内面に、後述するボールペン体の安定性を良好なものとするために、軸筒1の内面に突起や縦リブなどを放射状に形成しても良い。また、軟質部材2を形成する比較的軟質な樹脂材質としては、本例においては熱可塑性エラストマーを使用しているが、軟質アクリルなどが挙げられる。
前記軸筒1の後端開口部には、尾栓3が螺合の手段によって着脱自在に取り付けられているが、圧入構造を利用した固定手段であっても良い。それら軸筒1と軟質部材2、並びに、尾栓3によって軸体4が構成されているが、前記軸筒1の先端近傍は、先端に向かって先細り形状をなしている。また、その軸筒1の長手方向における長さは、尾栓3の3倍以上の長さを有している。つまり、軸筒1と尾栓3との取り付け部は、把持する部分である軟質部材2の後方部となっている。お互いの螺合部(取り付け部)を把持する部分の後方に設けることによって螺合部からの折損を防止していると共に、互いの部材の緩みを防止している。ちなみに、螺合部を把持する部分、即ち、軸筒の中央近傍に位置させてしまうと、その把持する部分に把持力や筆記圧が集中し、該部分から折損してしまう危険性がある。螺子部を形成することによって、該部分が薄肉状態になっているため、折損しやすくなってしまっているのである。また、螺合する部分に把持力がかかってしまうと、ややもすると周方向にも力が作用してしまい、その結果、互いの部材が緩み、筆記に違和感が発生してしまう。さらに、軸体4の内部には、ボールペン体5がコイルスプリングなどの弾撥部材6によって、後方に付勢された状態で配置されているが、軸体4の長手方向に対して前後動が可能に配置されていると共に、そのボールペン体5の先端部(ボールペンチップ7)が軸体4の先端開口部から出没が可能なものとなっている。尚、前記弾撥部材6は、ボールペン体5の前方に設けられた外面段部5aと、軸筒1の前方形成された内面段部1aとの間に張設されている。前記弾撥部材6は、本例においては、コイルスプリングを使用しているが、ゴムや樹脂スプリング、エラストマーなどでもよい。
A first example will be described with reference to FIGS. This is a so-called retractable writing instrument in which a ball-point pen body is disposed in the shaft body and the ball-point pen body is disposed so as to be able to retract. A relatively soft resin material (soft member 2) is coated on the surface of the shaft tube 1 formed of a relatively hard resin material and gripped. As an example of a relatively hard resin material forming the shaft tube 1, polycarbonate is used in this example, but polyethylene terephthalate, acrylic, acrylonitrile butadiene styrene copolymer (ABS), acrylonitrile styrene copolymer Examples include coalescence (AS) and polypropylene. In order to improve the stability of a ballpoint pen body to be described later on the inner surface of the shaft tube 1, protrusions, vertical ribs, and the like may be formed radially on the inner surface of the shaft tube 1. Moreover, as a comparatively soft resin material which forms the soft member 2, although the thermoplastic elastomer is used in this example, soft acrylic etc. are mentioned.
The tail plug 3 is detachably attached to the rear end opening of the shaft tube 1 by a screwing means, but may be a fixing means using a press-fitting structure. A shaft body 4 is constituted by the shaft tube 1, the soft member 2, and the tail plug 3, and the vicinity of the tip of the shaft tube 1 is tapered toward the tip. The length of the shaft tube 1 in the longitudinal direction is three times or more that of the tail plug 3. That is, the attachment portion between the shaft tube 1 and the tail plug 3 is a rear portion of the soft member 2 that is a gripping portion. By providing it behind the part which holds each other's screwing part (attachment part), while preventing breakage from a screwing part, the mutual member is prevented from loosening. Incidentally, if the screwed part is gripped, that is, if it is positioned in the vicinity of the center of the shaft cylinder, there is a risk that the gripping force and writing pressure concentrate on the gripped part and break from the part. By forming the screw portion, the portion is in a thin state, so that it is easy to break. Further, if a gripping force is applied to the screwed portion, a force is also applied in the circumferential direction. As a result, the members are loosened, and writing feels uncomfortable. Further, inside the shaft body 4, the ball-point pen body 5 is disposed in a state of being urged rearward by an elastic member 6 such as a coil spring, but is moved back and forth with respect to the longitudinal direction of the shaft body 4. The tip of the ball-point pen body 5 (the ball-point pen tip 7) can be projected and retracted from the tip opening of the shaft body 4. The elastic member 6 is stretched between an outer surface step portion 5 a provided in front of the ballpoint pen body 5 and an inner surface step portion 1 a formed in front of the shaft cylinder 1. The elastic member 6 uses a coil spring in this example, but may be a rubber, a resin spring, an elastomer, or the like.
また、ボールペン体5の後端近傍部は、尾栓3が軸筒1に螺着された状態においては、前記弾撥部材6が圧縮され、軸筒1の内部に位置しているが、尾栓3を離脱させた状態においては、弾撥部材6が伸張し、ボールペン体5の後端近傍部が軸筒1の後端開口部から露出した状態になる。即ち、ボールペン体5の外面段部5aからボールペン体5の後端部までの距離Aと弾撥部材6の自由長の距離Bを加算した距離は、軸筒1の内面段部1aから軸筒1の後端部までの距離Cよりも長く形成されている
一方、前記尾栓3の内部には、回転子8が前後動可能に配置されており、その回転子8の後方には摺動子9も前後動可能に配置されているが、その摺動子9の後端近傍は前記尾栓3の後端開口部から露出しており、その露出部が押圧操作部10となっている。即ち、摺動子9の押圧操作部10を指などで前後に押圧操作することによって、軸体4内のボールペン体5が前後動し、これによってボールペンチップ7が軸体4の先端開口部から出没するのである。また、前記回転子8は、尾栓3のほぼ中央部に位置していると共に、その回転子8の下端面には、前記ボールペン体5の後端部が当接している。尚、回転子8の縁部には、下方に向けて爪部8aが等間隔な位置の4か所に形成されているが、その爪部8aは、後方かつ内方に向けて順次縮形している。その筒部8aに前記ボールペン体5の後端部を内接させることによって、そのボールペン体5の後端部における振れや偏心を防止している。つまり、ボールペン体5の後端部も尾栓3のほぼ中央部に位置していることになる。
符号11は、前記尾栓3に一体成形されたクリップであるが、別部材で構成し、接着や圧入などの手段によって尾栓3に固定しても良い。
Further, the vicinity of the rear end of the ball-point pen body 5 is located inside the shaft cylinder 1 while the elastic member 6 is compressed in a state where the tail plug 3 is screwed to the shaft cylinder 1. In a state where the stopper 3 is detached, the elastic member 6 is extended, and the vicinity of the rear end of the ballpoint pen body 5 is exposed from the rear end opening of the shaft tube 1. That is, the distance obtained by adding the distance A from the outer surface step portion 5a of the ballpoint pen body 5 to the rear end portion of the ballpoint pen body 5 and the free length distance B of the elastic member 6 is from the inner surface step portion 1a of the shaft tube 1 to the shaft tube. On the other hand, a rotor 8 is disposed inside the tail plug 3 so as to be movable back and forth, and slides behind the rotor 8. The child 9 is also arranged to be movable back and forth, but the vicinity of the rear end of the slider 9 is exposed from the rear end opening of the tail plug 3, and the exposed portion serves as the pressing operation portion 10. . That is, when the pressing operation portion 10 of the slider 9 is pressed back and forth with a finger or the like, the ball-point pen body 5 in the shaft body 4 moves back and forth, whereby the ball-point pen tip 7 moves from the tip opening of the shaft body 4. It will appear. In addition, the rotor 8 is positioned substantially at the center of the tail plug 3, and the lower end surface of the rotor 8 is in contact with the rear end of the ballpoint pen body 5. Note that claw portions 8a are formed on the edge portion of the rotor 8 at four positions at equal intervals in the downward direction. The claw portions 8a are successively reduced in the rear and inward directions. doing. By causing the cylindrical portion 8 a to inscribe the rear end portion of the ball-point pen body 5, shake and eccentricity at the rear end portion of the ball-point pen body 5 are prevented. That is, the rear end portion of the ball-point pen body 5 is also located at the substantially central portion of the tail plug 3.
Reference numeral 11 denotes a clip integrally formed with the tail plug 3, but it may be formed of a separate member and fixed to the tail plug 3 by means such as adhesion or press fitting.
前記軟質部材2は、軸筒1の把持する部分に形成された凹部1bを覆うものとなっているが、それら軸筒1と軟質部材2は別部材で構成され、その軟質部材2が軸筒1に対して挿着された状態になっているが、2色成形などの手段によって一体的に成形してもよい。そして、その軟質部材2の前方部の表面には、微細な高さを有する波形状のグリップ部12が形成されているが、なし地状であっても良く、或いは、ドットを多数形成するなどしても良い。また、その軟質部材2は、その軟質部材2の内面、或いは、軸筒1の表面にアルコールを塗布することによって、容易に挿着が可能なものとなっている。そして、挿着した後においては、塗付したアルコールが蒸発するようになっている。
尚、軸筒1の後部内面には、前記尾栓3が螺合する雌ねじ13が形成されている。
The soft member 2 covers a recess 1b formed in a portion gripped by the shaft tube 1, and the shaft tube 1 and the soft member 2 are formed as separate members, and the soft member 2 is the shaft tube. Although it is in a state of being inserted into 1, it may be integrally molded by means such as two-color molding. And the wave-shaped grip part 12 which has fine height is formed in the surface of the front part of the soft member 2, However, A plain shape may be sufficient or many dots are formed etc. You may do it. The soft member 2 can be easily inserted by applying alcohol to the inner surface of the soft member 2 or the surface of the shaft tube 1. And after inserting, the applied alcohol evaporates.
An internal thread 13 to which the tail plug 3 is screwed is formed on the inner surface of the rear portion of the shaft tube 1.
前記尾栓3は、クリップ11の基部が連結される大径筒状部14とその大径筒状部14の前方に形成された小径筒状部15から構成されているが、その小径筒状部15には前記軸筒1の雌ねじ13に螺合する雄ねじ16と案内筒部17が形成されている。
ここで、前記クリップ11の前方部には、玉部11aが形成されており、その玉部11aは前記軸筒1の表面に接触している。即ち、そのクリップ11(玉部11a)にノートやポケットなどを挟み込んだ際、抜け落ちにくくしているのである。
さらに、玉部11aの両側には、円弧部11bが施されている。ボールペン体5を交換する際、尾栓3を軸体4から離脱させるが、この時、尾栓3と軸体4とを相対的に回転させるため、軟質部材2の表面には玉部11aによる摺動傷が付いてしまう危険性が高い。その摺動傷を防止するために、玉部11aの両側に円弧部11bを形成しているのである。
The tail plug 3 is composed of a large-diameter cylindrical portion 14 to which the base of the clip 11 is connected and a small-diameter cylindrical portion 15 formed in front of the large-diameter cylindrical portion 14. The portion 15 is formed with a male screw 16 and a guide tube portion 17 that are screwed into the female screw 13 of the shaft tube 1.
Here, a ball portion 11 a is formed in the front portion of the clip 11, and the ball portion 11 a is in contact with the surface of the shaft tube 1. That is, when a notebook, a pocket or the like is sandwiched between the clip 11 (ball portion 11a), it is difficult to come off.
Further, arc portions 11b are formed on both sides of the ball portion 11a. When replacing the ball-point pen body 5, the tail plug 3 is detached from the shaft body 4. At this time, since the tail plug 3 and the shaft body 4 are relatively rotated, the surface of the soft member 2 is formed by a ball portion 11a. There is a high risk of sliding scratches. In order to prevent the sliding scratches, arc portions 11b are formed on both sides of the ball portion 11a.
前記尾栓3の内面の中間部には、押圧操作部10の脱落を防止するための顎部18が形成されているが、その顎部18の後端面には、中心に向かって下方に傾斜する傾斜部18aが形成されており、押圧操作部10の尾栓3への挿着性を容易なものとしている。
また、押圧操作部10の前方における外周面には案内突起19が形成されており、その案内突起19は前記顎部18の軸線方向に切り欠かれた切り欠き部20に係合している。この係合によって、押圧操作部10の尾栓3に対する位置決めが完了する。
ここで、前記押圧操作部10を尾栓3に対して押し込むと、押圧操作材10の側面に形成した係止突起21が、前記顎部18を乗り越えようと中心方向に撓む。しかし、係止突起21が、前記尾栓3の小径筒部15の側面に形成された貫通孔22に係合すると、その係合した瞬間に自らの復元力によって弾性復帰し、前記の貫通孔22に係止する。これによって、押圧操作部10の尾栓3からの脱落が防止される。
尚、前記貫通孔22の形状は、本例では、長方形であるが、楕円形状や対向する平行な内辺を有する長孔形状などであってもよい。
また、前記案内突起19の側面には、微細な凹凸の梨地部19aが形成されている。一方、前記切り欠き部20の内側面は鏡面部20aとなっている。その鏡面部20aに前記内面突起19の梨地部19aを接触させることによって、その接触抵抗を極力少なくしているのである。
A jaw portion 18 for preventing the pressing operation portion 10 from falling off is formed at an intermediate portion of the inner surface of the tail plug 3, and the rear end surface of the jaw portion 18 is inclined downward toward the center. An inclined portion 18a is formed to facilitate insertion of the pressing operation portion 10 into the tail plug 3.
Further, a guide projection 19 is formed on the outer peripheral surface in front of the pressing operation portion 10, and the guide projection 19 is engaged with a notch portion 20 cut out in the axial direction of the jaw portion 18. By this engagement, the positioning of the pressing operation unit 10 with respect to the tail plug 3 is completed.
Here, when the pressing operation portion 10 is pushed into the tail plug 3, the locking projection 21 formed on the side surface of the pressing operation material 10 bends in the central direction so as to get over the jaw portion 18. However, when the locking projection 21 is engaged with the through hole 22 formed on the side surface of the small diameter cylindrical portion 15 of the tail plug 3, the return is elastically restored by its own restoring force at the moment of engagement. 22 is locked. This prevents the pressing operation unit 10 from falling off the tail plug 3.
The shape of the through hole 22 is a rectangle in this example, but may be an elliptical shape or a long hole shape having parallel inner sides facing each other.
Further, on the side surface of the guide projection 19, a fine uneven surface portion 19 a is formed. On the other hand, the inner surface of the notch 20 is a mirror surface 20a. The contact resistance is reduced as much as possible by bringing the matte portion 19a of the inner surface protrusion 19 into contact with the mirror surface portion 20a.
前記鍔部18の前端面には、カム部18bが形成されているが、そのカム部18bは浅溝部18cと深溝部18dとから構成されている。そして、その深溝部18dに前記の切り欠き部20が形成されている。
前記尾栓3の内面の下方には、前記回転子8の脱落を防止する内面リブ23が円周状に形成されている。その内面リブ23の後方と前方には後方傾斜面23a、前方傾斜面23bが形成されており、その後方傾斜面23aの傾斜角度は、前方傾斜面23bの傾斜角度よりもなだらかになっている。この尾栓3を射出成型などの手段によって成形した際における、コアピンの離型性を良好なものとしている。
A cam portion 18b is formed on the front end surface of the flange portion 18, and the cam portion 18b includes a shallow groove portion 18c and a deep groove portion 18d. And the said notch part 20 is formed in the deep groove part 18d.
Below the inner surface of the tail plug 3, an inner surface rib 23 for preventing the rotor 8 from falling off is formed in a circumferential shape. A rear inclined surface 23a and a front inclined surface 23b are formed behind and in front of the inner rib 23, and the inclination angle of the rear inclined surface 23a is gentler than the inclination angle of the front inclined surface 23b. When the tail plug 3 is formed by means such as injection molding, the releasability of the core pin is made favorable.
次に、前記軸筒1への弾撥部材6やボールペン体5の挿入手順、並びに、尾栓3などの組み立て手順について説明する。最初に、前軸セットαの組立を説明する。軸筒1に弾撥部材6を後端開口部から挿入し、次いで、ボールペン体5の前方部分を前記弾撥部材6にも挿入されるよう、軸筒1の後端開口部から挿入する。この時、ボールペン体5の後端近傍が、軸筒1の後端開口部から露出する。
次に後軸セットβの組立を説明する。その後軸セットβは、尾栓3と押圧操作部10、回転子8とで構成されていている。前記尾栓3大径筒部14の後端開口部から押圧操作部10を圧入するが、この時、押圧部材10の側面に形成した係止突起21が、前記顎部18を乗り越えようと中心方向に撓む。しかし、その係止突起21が、前記尾栓3の小径筒部15の側面に形成された貫通孔22に達すると、その達した瞬間に自らの復元力によって弾性復帰し、貫通孔22に係止する。
次いで、尾栓3の小径筒部15の前端開口部に回転子を挿入するが、前記尾栓3の内面の下方には、前記回転子8の内面リブ23が円周状に形成されているため、挿入後においては、回転子8の落下が防止できる。
次に後軸セットβと前軸セットαの組立を説明する。本例では自動組立機による組立方法を説明するが、手で組み立てても良い。手で組み立てる場合には、数巻きあるネジ部をすべて圧入することは、困難である。よって、螺合開始時が分かりにくい第1雄ねじ圧入突起16bを先に圧入し、その後、螺合組立を行う。自動組立機においても、螺合開始時が分かりにくい第1雄ねじ圧入突起16bを先に圧入し、その後、螺合組立を行うことが可能である。
Next, a procedure for inserting the elastic member 6 and the ball-point pen body 5 into the shaft tube 1 and a procedure for assembling the tail plug 3 will be described. First, assembly of the front shaft set α will be described. The elastic member 6 is inserted into the shaft tube 1 from the rear end opening, and then the front portion of the ballpoint pen body 5 is inserted from the rear end opening of the shaft tube 1 so as to be inserted into the elastic member 6 as well. At this time, the vicinity of the rear end of the ballpoint pen body 5 is exposed from the rear end opening of the shaft tube 1.
Next, assembly of the rear axle set β will be described. Thereafter, the shaft set β includes the tail plug 3, the pressing operation unit 10, and the rotor 8. The pressing operation unit 10 is press-fitted from the rear end opening of the tail plug 3 large-diameter cylindrical portion 14. At this time, the locking projection 21 formed on the side surface of the pressing member 10 is centered so as to get over the jaw portion 18. Bend in the direction. However, when the locking projection 21 reaches the through-hole 22 formed on the side surface of the small-diameter cylindrical portion 15 of the tail plug 3, it elastically recovers by its own restoring force at the moment of reaching the through-hole 22. Stop.
Next, a rotor is inserted into the front end opening of the small diameter cylindrical portion 15 of the tail plug 3, and an inner surface rib 23 of the rotor 8 is formed in a circumferential shape below the inner surface of the tail plug 3. Therefore, the rotor 8 can be prevented from dropping after insertion.
Next, assembly of the rear shaft set β and the front shaft set α will be described. In this example, an assembling method using an automatic assembling machine will be described, but it may be assembled by hand. When assembling by hand, it is difficult to press-fit all the screw portions having several turns. Therefore, the first male screw press-fitting protrusion 16b which is difficult to understand at the start of screwing is press-fitted first, and then screwing assembly is performed. Also in the automatic assembly machine, it is possible to press-fit the first male screw press-fitting protrusion 16b which is difficult to understand at the start of screwing, and then perform screwing assembly.
一般的に、自動組立機では、螺合の組立はしにくいため、螺合形状であっても、圧入手段が採用されることが多い。本例でも、圧入方式を採用していて、圧入手順として、後軸セットβの押圧操作部10が解除されていることを確認し、前軸セットαに圧入を開始する。この時、ボールペン体5の後端部が露出した状態において、そのボールペン体5の大部分が軸筒1内に挿入しているため、また、ボールペン体5の重心位置が軸筒1の領域内に位置しているため、そのボールペン体5は軸筒1に対して振れることなく安定した状態にある。よって、前記ボールペン体5の後端部を案内筒部17に容易に、しかも、真っ直ぐに挿入することができ、回転子8の下端面に当接させることができる。
そして、尾栓3を軸筒1に装着した状態においては、前記ボールペン体5の後端部が軸筒1の内部に位置している。装着後、ボールペン体5の後端部を軸筒1の内部に位置させることによって、回転子8を軸筒1内に位置させることができ、前記尾栓3を短く形成することができる。これによって、前述したように互いの部材の螺合部を把持部のさらに後方に位置させることができ、軸筒1や尾栓3の折損などを防止することができる。
その後、後軸セットβを前軸セットαに圧入し始めると、ボールペン体5、並びに、回転子8を介して、弾撥部材6によって後方に向け付勢された押圧操作部10の係止突起21が、尾栓3の貫通孔22の後端に位置される。これによって、貫通孔22が十分に撓み、圧入不足が防止されると共に、軸筒1への負荷が軽減され、その結果、軸筒1や尾栓3の割れも防止され、安全に圧入することができる。
Generally, in an automatic assembling machine, since it is difficult to assemble screws, press-fitting means are often employed even if they are screwed. Also in this example, the press-fitting method is adopted, and as a press-fitting procedure, it is confirmed that the pressing operation unit 10 of the rear shaft set β is released, and press-fitting into the front shaft set α is started. At this time, in the state where the rear end portion of the ballpoint pen body 5 is exposed, most of the ballpoint pen body 5 is inserted into the shaft tube 1, and the center of gravity of the ballpoint pen body 5 is within the region of the shaft tube 1. Therefore, the ball-point pen body 5 is in a stable state without swinging with respect to the shaft tube 1. Therefore, the rear end portion of the ballpoint pen body 5 can be easily and straightly inserted into the guide tube portion 17 and can be brought into contact with the lower end surface of the rotor 8.
When the tail plug 3 is attached to the shaft tube 1, the rear end portion of the ballpoint pen body 5 is located inside the shaft tube 1. After the mounting, the rear end portion of the ball-point pen body 5 is positioned inside the shaft tube 1 so that the rotor 8 can be positioned inside the shaft tube 1 and the tail plug 3 can be formed short. Thereby, as described above, the screwing portion of each member can be positioned further rearward of the grip portion, and breakage of the shaft tube 1 and the tail plug 3 can be prevented.
Thereafter, when the rear shaft set β starts to be press-fitted into the front shaft set α, the locking projection of the pressing operation unit 10 urged rearward by the elastic member 6 via the ballpoint pen body 5 and the rotor 8. 21 is located at the rear end of the through hole 22 of the tail plug 3. As a result, the through-hole 22 is sufficiently bent and insufficient press-fitting is prevented, and the load on the shaft tube 1 is reduced. As a result, the shaft tube 1 and the tail plug 3 are also prevented from being cracked and can be safely press-fitted. Can do.
また、本実施例においては、前記弾撥部材6によって後方に向けて付勢した押圧操作部10の係止突起21が、尾栓3の貫通孔22の後端に配置された際、押圧操作部10の係止突起21が尾栓3の雄ねじ圧入突起部16aよりも後方に位置する様になっている。これにより、圧入時、尾栓3の雄ねじ圧入突起部16aが軸筒1の雌ねじ係合突起部13aを乗り越える際、尾栓3の雄ねじ圧入突起部16aの真下にあたる尾栓3の貫通孔22の形状が撓みやすくなっている。即ち、前記係止突起21が尾栓3の貫通孔22の後端に配置された際、押圧操作部10の係止突起21が尾栓3の雄ねじ圧入突起部16aよりも、後方に配置することで、貫通孔22の撓みが確保できる。よって貫通孔22が十分に撓み、圧入不足が防止されると共に、軸筒1への負荷が軽減され、その結果、軸筒1や尾栓3の割れも防止され、安全に圧入することができる。
尚、弾撥部材6によって後方に向けて付勢した押圧操作部10の係止突起21が、尾栓3の雄ねじ圧入突起部16aの真下に配置されてしまうと、尾栓3の貫通孔22の撓みを妨げてしまう危険性がある。
Further, in this embodiment, when the locking projection 21 of the pressing operation portion 10 urged rearward by the elastic member 6 is disposed at the rear end of the through hole 22 of the tail plug 3, the pressing operation is performed. The locking protrusion 21 of the portion 10 is positioned behind the male screw press-fitting protrusion 16 a of the tail plug 3. Accordingly, when the male screw press-fitting protrusion 16a of the tail plug 3 gets over the female screw engagement protrusion 13a of the shaft tube 1 during press-fitting, the through hole 22 of the tail plug 3 that is directly below the male screw press-fitting protrusion 16a of the tail plug 3 is provided. The shape is easy to bend. That is, when the locking projection 21 is disposed at the rear end of the through hole 22 of the tail plug 3, the locking projection 21 of the pressing operation unit 10 is disposed behind the male screw press-fitting projection 16 a of the tail plug 3. Thereby, the bending of the through-hole 22 is securable. Therefore, the through-hole 22 is sufficiently bent and insufficient press-fitting is prevented, and the load on the shaft tube 1 is reduced. As a result, the shaft tube 1 and the tail plug 3 are also prevented from being cracked and can be safely press-fitted. .
If the locking projection 21 of the pressing operation unit 10 urged rearward by the elastic member 6 is disposed directly below the male screw press-fitting projection 16a of the tail plug 3, the through hole 22 of the tail plug 3 is provided. There is a risk of hindering the bending of the.
さらに、弾撥部材6の未挿入が起きた時などで、弾撥部材6により後方に向けて押圧操作部10係止突起21が付勢されない場合、尾栓3の雄ねじ圧入突起部16aが軸筒1の雌ねじ係合突起部13aを乗り越える際、尾栓3の貫通孔22が撓み、押圧操作部10の係止突起21が尾栓3の貫通孔22内面に挟まれてしまう可能性がある。
尚、軸筒1の雌ねじ係合突起部13aと尾栓3の雄ねじ圧入突起部16aの圧入量aと尾栓1貫通孔22の巾bと押圧操作部10の係止突起21巾cとの関係が、a≦b−c の関係に形成れることにより、尾栓3の貫通孔22内面に押圧操作部10の係止突起21が挟まれることがない。よって、圧入不足が防止されると共に、軸筒1への負荷が軽減され、その結果、軸筒1や尾栓3の割れも防止され、安全に圧入することができる。
尚、径方向の同一線上に係合する突起が複数存在する場合は、その合計が圧入量aとなる。
Further, when the elastic member 6 is not inserted, the pressing operation portion 10 locking projection 21 is not urged rearward by the elastic member 6, the male screw press-fit protrusion 16 a of the tail plug 3 is pivoted. When getting over the female screw engaging protrusion 13a of the tube 1, the through hole 22 of the tail plug 3 may be bent, and the locking protrusion 21 of the pressing operation part 10 may be sandwiched between the inner surfaces of the through hole 22 of the tail plug 3. .
It should be noted that the press-fit amount a of the female screw engaging protrusion 13a of the shaft tube 1, the male screw press-fit protrusion 16a of the tail plug 3, the width b of the tail plug 1 through-hole 22, and the locking protrusion 21 width c of the pressing operation section 10 By forming the relationship as a ≦ b−c, the locking protrusion 21 of the pressing operation portion 10 is not sandwiched between the inner surfaces of the through holes 22 of the tail plug 3. Accordingly, insufficient press-fitting is prevented, and the load on the shaft tube 1 is reduced. As a result, the shaft tube 1 and the tail plug 3 are also prevented from being cracked and can be safely press-fitted.
If there are a plurality of protrusions that engage on the same radial line, the total is the press-fit amount a.
第2例を図14に示し説明する。弾撥部材24を押圧操作部10内天面と回転子段部8bとの間に張設した例である。その弾撥部材24を押圧操作部10内天面と回転子段部8bとの間に張設したことで、前記押圧操作部10が後方に付勢される。つまり、常時、押圧操作部10の係止突起21が、尾栓3の貫通孔22後端に位置される。
これによって、組立の際に、押圧操作部が解除されているかを確認する作業を排除することが可能になり、組み立て工数を削減することができる。前記弾撥部材24は、本例においては、コイルスプリングを使用しているが、ゴムや樹脂スプリング、エラストマーなどでもよい。
A second example will be described with reference to FIG. In this example, the elastic member 24 is stretched between the top surface of the pressing operation unit 10 and the rotor step 8b. Since the elastic member 24 is stretched between the top surface of the pressing operation unit 10 and the rotor step 8b, the pressing operation unit 10 is urged rearward. That is, the locking protrusion 21 of the pressing operation unit 10 is always located at the rear end of the through hole 22 of the tail plug 3.
As a result, it is possible to eliminate the work of confirming whether or not the pressing operation unit is released during assembly, and the number of assembly steps can be reduced. The elastic member 24 uses a coil spring in this example, but may be a rubber, a resin spring, an elastomer, or the like.
1 軸筒
2 樹脂材質
3 尾栓
4 軸体
5 ボールペン体
6 弾撥部材
7 ボールペンチップ
8 回転子
9 摺動子
10 押圧操作部
11 クリップ
12 グリップ部
13 雌ねじ
14 大径筒状部
15 小径筒状部
16 雄ねじ
17 案内筒部
18 顎部
19 案内突起
20 切り欠き部
21 係止突起
22 貫通孔
23 内面リブ
24 弾撥部材
α 前軸セット
β 後軸セット
DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 Resin material 3 Tail plug 4 Shaft body 5 Ball-point pen body 6 Repellent member 7 Ball-point pen tip 8 Rotor 9 Slider 10 Press operation part 11 Clip 12 Grip part 13 Female screw 14 Large diameter cylindrical part 15 Small diameter cylindrical form Part 16 Male thread 17 Guide tube part 18 Jaw part 19 Guide protrusion 20 Notch part 21 Locking protrusion 22 Through hole 23 Inner rib 24 Repellent member α Front shaft set β Rear shaft set

Claims (4)

  1. 押圧操作部と尾栓と軸筒の取り付け構造であって、押圧操作部を尾栓に対して、前後動可能に取り付けると共に、押圧操作部に弾性変化可能な係止突起を形成する一方、前記尾栓には、前記係止突起と係合する貫通孔を形成し、また、前記尾栓の貫通孔の近傍には圧入突起を形成し、さらに、前記押圧操作部を弾撥部材によって後方に向けて付勢した押圧操作部と尾栓と軸筒との取り付け構造。 The mounting structure of the pressing operation portion, the tail plug, and the shaft tube, and the pressing operation portion is attached to the tail plug so as to be movable back and forth, and the pressing operation portion is formed with a locking projection that can be elastically changed, A through hole that engages with the locking projection is formed in the tail plug, a press-fitting projection is formed in the vicinity of the through hole of the tail plug, and the pressing operation portion is rearwardly moved by an elastic member. Mounting structure of the pressing operation part, tail plug and shaft barrel that are biased toward.
  2. 前記係止突起を圧入突起よりも後方に位置させた請求項1に記載の押圧操作部と尾栓と軸筒との取り付け構造。 The attachment structure of the press operation part, tail plug, and shaft tube according to claim 1, wherein the locking protrusion is positioned behind the press-fitting protrusion.
  3. 前記軸筒と尾栓の圧入量をaとし、尾栓の貫通孔の巾をbとし、押圧操作部の係合突起巾をcとした時、それらの関係がa≦b−cである請求項1記載、或いは、請求項2に記載の押圧操作部と尾栓と軸筒との取り付け構造。 The relationship is a ≦ b−c, where a is the amount of press-fitting between the shaft cylinder and the tail plug, a is the width of the through hole of the tail plug, and b is the engagement protrusion width of the pressing operation portion. The attachment structure of the press operation part of Claim 1 or Claim 2, a tail plug, and a shaft cylinder.
  4. 前記尾栓と軸筒とを螺合によって連結させた請求項1〜請求項3の何れかに記載の押圧操作部と尾栓と軸筒との取り付け構造。
    The attachment structure of the press operation part, tail plug, and shaft cylinder in any one of Claims 1-3 which connected the said tail plug and the shaft cylinder by screwing.
JP2011193417A 2011-09-06 2011-09-06 Mounting structure of pressing operation part, tail plug, and shaft tube Pending JP2013052633A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014162190A (en) * 2013-02-27 2014-09-08 Mitsubishi Pencil Co Ltd Writing instrument component and writing instrument including component
JP2016043497A (en) * 2014-08-20 2016-04-04 三菱鉛筆株式会社 Knock type ball point pen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003063192A (en) * 2001-08-28 2003-03-05 Pilot Corp Ejection-type ball-point pen
JP2005125497A (en) * 2003-10-21 2005-05-19 Mitsubishi Pencil Co Ltd Knock type writing instrument
JP2007030279A (en) * 2005-07-26 2007-02-08 Pentel Corp Structure for fitting knock to holder tube
JP2008162105A (en) * 2006-12-28 2008-07-17 Pentel Corp Retractable writing utensil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003063192A (en) * 2001-08-28 2003-03-05 Pilot Corp Ejection-type ball-point pen
JP2005125497A (en) * 2003-10-21 2005-05-19 Mitsubishi Pencil Co Ltd Knock type writing instrument
JP2007030279A (en) * 2005-07-26 2007-02-08 Pentel Corp Structure for fitting knock to holder tube
JP2008162105A (en) * 2006-12-28 2008-07-17 Pentel Corp Retractable writing utensil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014162190A (en) * 2013-02-27 2014-09-08 Mitsubishi Pencil Co Ltd Writing instrument component and writing instrument including component
JP2016043497A (en) * 2014-08-20 2016-04-04 三菱鉛筆株式会社 Knock type ball point pen

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