JP3348180B2 - Grasping structure of writing instrument - Google Patents
Grasping structure of writing instrumentInfo
- Publication number
- JP3348180B2 JP3348180B2 JP32166894A JP32166894A JP3348180B2 JP 3348180 B2 JP3348180 B2 JP 3348180B2 JP 32166894 A JP32166894 A JP 32166894A JP 32166894 A JP32166894 A JP 32166894A JP 3348180 B2 JP3348180 B2 JP 3348180B2
- Authority
- JP
- Japan
- Prior art keywords
- gripping member
- concave portion
- barrel
- attached
- writing instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、軸筒の前方部に凹部を
形成し、その凹部に軸筒の材質より柔らかい材質の把持
部材を取り付け、その把持部材を軸筒先端に取り付けた
先部材により固定した筆記具における把持部材構造に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tip member in which a recess is formed in the front part of a barrel, a gripping member made of a material softer than the material of the barrel is attached to the recess, and the gripping member is attached to the tip of the barrel. The present invention relates to a gripping member structure of a writing instrument fixed by the above.
【０００２】[0002]
【従来の技術】軸筒の前方部分に、その軸筒の材質より
柔らかい材質の把持部材を取り付けた筆記具の１例とし
て、図７に示されているようなものが知られている。2. Description of the Related Art As an example of a writing implement having a gripping member made of a material softer than the material of the barrel, the one shown in FIG. 7 is known.
【０００３】詳述すると、軸筒１０１の前方部分には、
凹部１０２が形成されており、その凹部１０２には、ゴ
ム部材などの把持部材１０３が密着した状態で取り付け
られている。密着と云うよりは、圧入状態で取り付けら
れている。また、前記軸筒１０１（凹部１０２）の先端
には、雄螺子１０４が形成されており、その雄螺子１０
４には、先部材１０５が螺着されている。その先部材１
０５は、円錐状に形成されており、後端部１０５ａにお
ける外径は、前記把持部材１０３の外径と略同径に形成
されている。つまり、把持部材１０３は、先部材１０５
の後端部１０５ａと軸筒１０１に形成されている凹部１
０２の後端部１０２ａとにより挾持されており、軸筒１
０１に対して前後動しないようになっている。[0003] Specifically, in the front part of the barrel 101,
A concave portion 102 is formed, and a holding member 103 such as a rubber member is attached to the concave portion 102 in a state of being in close contact therewith. It is mounted in a press fit rather than in close contact. A male screw 104 is formed at the tip of the shaft cylinder 101 (recess 102).
4, a tip member 105 is screwed. Tip member 1
05 is formed in a conical shape, and the outer diameter of the rear end portion 105a is formed to be substantially the same as the outer diameter of the gripping member 103. That is, the gripping member 103 is
Concave portion 1 formed in rear end portion 105a and shaft cylinder 101
02 and the rear end portion 102a of the shaft cylinder 1
01 does not move back and forth.
【０００４】[0004]
【発明が解決しようとする課題】しかし、前述したよう
な把持部の取り付け構造にあっては、確実に取り付けら
れるものの、各々の寸法が圧入状態に設定されているた
め、組み立てが非常に困難なものであり、場合によって
は、把持部と軸筒との摩擦抵抗を少なくするために特別
な治具を必要としていた（１例として、実開昭５９−１
８７４８９号公報に記載の考案）。そこで、把持部材の
内径を予め大きく成形し、軸筒に挿着後、加熱処理によ
り収縮せしめ、把持部材を軸筒に確実に取り付けること
も考えられた（１例として、実開昭６１−１２８０８４
号公報に記載の考案）が、把持部材も高価なものとな
り、また、加熱する工程が増し、結果として、製品の価
格をつり上げてしまうものであった。However, in the above-described mounting structure of the grip portion, although it is securely mounted, since each dimension is set in a press-fit state, it is very difficult to assemble. In some cases, a special jig was required to reduce the frictional resistance between the gripping portion and the shaft cylinder (for example, see Japanese Utility Model Application Publication No.
87489). Therefore, it has been considered that the inner diameter of the gripping member is formed large in advance, which is inserted into the shaft cylinder, then contracted by heat treatment, and the gripping member is securely attached to the shaft cylinder (for example, Japanese Utility Model Application Laid-Open No. 61-128084).
However, the gripping member also becomes expensive, and the number of heating steps increases, resulting in an increase in the price of the product.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記問題点に
鑑みてなされたものであり、軸筒の前方部に凹部を形成
し、その凹部に軸筒の材質より柔らかい材質の把持部材
を取り付け、その把持部材を軸筒先端に取り付けた先部
材により固定した筆記具における把持部材構造にあっ
て、前記凹部を軸筒の前端から後方に向かって順次大径
となるよう形成すると共に、前記把持部材の内径を前端
から後方に向かって順次大径となるよう形成し前記凹部
に密着させたことを要旨とするものである。 SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a concave portion formed in a front portion of a barrel, and a holding member made of a material softer than the material of the barrel in the concave portion. In the gripping member structure of a writing instrument in which the gripping member is fixed by a tip member attached to the distal end of the barrel, the concave portion is formed so as to gradually increase in diameter from the front end of the barrel toward the rear. At the same time, the inner diameter of the gripping member is
The concave portion is formed so that the diameter gradually increases from
The gist is that it is brought into close contact with.
【０００６】[0006]
【実施例】図１、図２に第１例を示し説明する。シャ−
プペンシルに適用した例を示すが、ボ−ルペンであって
もよい。なお、図中上方を後方と云い、下方を前方とい
う。軸筒本体１は、前軸２とその前軸２の前方に螺着さ
れた先部材３と、前軸の後方に圧入された後軸４とから
構成されている。その軸筒本体１の内部には、鉛筆芯な
どを繰り出す、芯繰り出し機構５が配置されており、そ
の芯繰り出し機構５は、芯タンク６や芯タンク６の前方
に固定されたチャック体７や、そのチャック体７の前方
に配置された芯戻り止め部材８などから構成されてい
る。符号９は、後軸４に固定されているクリップであ
り、また、符号１０は、前記芯タンク６に着脱自在に取
り付けられたノックキャップであり、前記芯繰り出し機
構５を作動させるためのものである。1 and 2 show a first example. Shar
An example in which the present invention is applied to a pencil is shown, but a ball pen may be used. In the drawings, the upper part is referred to as the rear, and the lower part is referred to as the front. The barrel main body 1 includes a front shaft 2, a front member 3 screwed forward of the front shaft 2, and a rear shaft 4 press-fitted behind the front shaft. A lead mechanism 5 for feeding a pencil lead or the like is disposed inside the barrel body 1. The lead mechanism 5 includes a lead tank 6, a chuck body 7 fixed in front of the lead tank 6, and the like. And a center detent member 8 disposed in front of the chuck body 7. Reference numeral 9 denotes a clip fixed to the rear shaft 4, and reference numeral 10 denotes a knock cap detachably attached to the lead tank 6 for operating the lead feeding mechanism 5. is there.
【０００７】前記前軸２の前方部には、凹部１１が形成
されており、その凹部１１には、凹部１１の外径と同径
かあるいは若干小形で、前軸２の材質より柔らかい、熱
可塑性エラストマ−やＮＢＲ、シリコ−ンゴムなど、一
般的にゴム部材と呼ばれている材質からなる把持部材１
２が密着した状態で取り付けられている。前記凹部１１
は、前軸２の前端部から後方に向けて順次大径に形成さ
れている。つまり、円錐形状に形成されている。一方、
把持部材１２の内径も、前方から後方に向けて順次大径
に形成されており、前記円錐形状の凹部１１と密着する
ようになっている。A recess 11 is formed in the front part of the front shaft 2. The recess 11 has the same diameter as or slightly smaller than the outer diameter of the recess 11 and is softer than the material of the front shaft 2. A gripping member 1 made of a material generally called a rubber member, such as a plastic elastomer, NBR, or silicone rubber.
2 are attached in close contact with each other. The recess 11
Are formed to have a large diameter sequentially from the front end of the front shaft 2 toward the rear. That is, it is formed in a conical shape. on the other hand,
The inner diameter of the gripping member 12 is also gradually increased from the front to the rear, so that the gripping member 12 comes into close contact with the conical recess 11.
【０００８】前記把持部１２の前端は、先部材３の中間
部に形成されている係止部３ａに当接している。この当
接作用により、把持部材１２の前方へに移動を規制し、
また、把持部材１２の後方への移動を凹部１１の後端部
１１ａによって規制している。なお、前記先部材３の後
方には、係止部３ａから雄螺子部１３が形成されてお
り、前記前軸２の前方の内面に形成された雌螺子部に螺
合しているが、凹凸嵌合や単なる圧入などの固定手段で
あってもよい。The front end of the grip portion 12 is in contact with a locking portion 3a formed at an intermediate portion of the tip member 3. By this abutting action, the movement of the gripping member 12 is regulated forward,
The rearward movement of the gripping member 12 is restricted by the rear end 11 a of the recess 11. A male screw portion 13 is formed behind the tip member 3 from the locking portion 3a, and is screwed to a female screw portion formed on the inner surface in front of the front shaft 2. Fixing means such as fitting or simple press fitting may be used.
【０００９】次に作用について説明する。把持部材１２
を前軸２の凹部１１に取り付ける際、把持部材１２の内
面と凹部１１の外面が、最終挿入位置、あるいは、最終
挿入位置近傍で接触状態となる。よって、取り付ける過
程においては、把持部材１２の内面と凹部１１の外面と
の摩擦抵抗がない。つまり、把持部１２の後端が凹部１
１の後端部１１ａに当接する直前、あるいは、当接した
時点で、把持部１２の内面全体が凹部１１の表面に密着
する。ここで、先部材３を螺合させると、把持部材１２
の前後動が規制される。なお、把持部１２の後端が凹部
１１の後端部１１ａに当接する直前で、把持部１２の内
面全体を凹部１１の表面に密着させることにより、圧入
状態となり把持部１２の凹部１１（軸筒本体１）に対す
る回転を極力防止することができる。Next, the operation will be described. Gripping member 12
Is attached to the recess 11 of the front shaft 2, the inner surface of the gripping member 12 and the outer surface of the recess 11 come into contact with each other at or near the final insertion position. Therefore, in the attaching process, there is no frictional resistance between the inner surface of the holding member 12 and the outer surface of the concave portion 11. In other words, the rear end of the gripper 12 is
Immediately before or at the time of contact with the rear end portion 11 a of the first holding member 1, the entire inner surface of the grip portion 12 comes into close contact with the surface of the concave portion 11. Here, when the tip member 3 is screwed, the grip member 12
Is regulated. Immediately before the rear end of the grip portion 12 contacts the rear end portion 11a of the concave portion 11, the entire inner surface of the grip portion 12 is brought into close contact with the surface of the concave portion 11 to be in a press-fit state, so that the concave portion 11 (shaft) of the grip portion 12 is formed. Rotation with respect to the cylinder main body 1) can be prevented as much as possible.
【００１０】図３、図４は、前記凹部１１の形状の変形
例である。図３は、湾曲した円錐形状の凹部としたもの
であり、図４は、組立の際多少摩擦抵抗はあるものの、
段階的（階段状）に形成したものである。このように、
凹部やその凹部の形状に合わせた把持部材の形状は、前
例に限ったものではなく適宜のものが上げられる。ま
た、前例においては、断面が円形状の軸筒並びに把持部
を意識して記載したが、四角形や六角形、あるいは、楕
円形であってもよい。少なくとも、前軸の前端部から後
方に向けて順次大径となる凹部であればよいものであ
る。また、図５に示すように、凹部１１の長手方向に溝
部１１ｂを形成するとともに、その溝部１１に係合する
突部１２ａを把持部材１２の内側に形成することによ
り、把持部１２の軸筒本体１に対する回転を防止するこ
とができる。FIGS. 3 and 4 show modified examples of the shape of the recess 11. FIG. 3 shows a concave portion having a curved conical shape, and FIG. 4 shows that there is some frictional resistance during assembly.
It is formed stepwise (stepwise). in this way,
The shape of the concave portion and the shape of the gripping member according to the shape of the concave portion are not limited to those in the previous example, but may be any suitable one. Further, in the previous example, the description has been made in consideration of the shaft cylinder and the grip portion having a circular cross section, but may be a square, a hexagon, or an ellipse. At least a concave portion having a larger diameter in order from the front end of the front shaft toward the rear is sufficient. As shown in FIG. 5, a groove 11 b is formed in the longitudinal direction of the recess 11, and a projection 12 a engaging with the groove 11 is formed inside the gripping member 12, so that the shaft cylinder of the gripping part 12 is formed. Rotation with respect to the main body 1 can be prevented.
【００１１】 図６は、 凹部１１の後端部１１ａに没入溝
１１ｃを形成し、その没入溝１１ｃに把持部材１２の後
端部を潜り込ませた例である。このように、把持部１２
の後端を没入溝１１ｃに潜り込ませることにより、把持
部１２の劣化などによるめくれ上がりや膨れを防止でき
る。 FIG . 6 shows an example in which an immersion groove 11c is formed in the rear end 11a of the recess 11, and the rear end of the gripping member 12 is sunk into the immersion groove 11c. Thus, the gripper 12
By making the rear end of the grip portion 12 dive into the immersion groove 11c, it is possible to prevent the grip portion 12 from being turned up or swollen due to deterioration or the like.
【００１２】[0012]
【発明の効果】本発明は、軸筒の前方部に凹部を形成
し、その凹部に軸筒の材質より柔らかい材質の把持部材
を取り付け、その把持部材を軸筒先端に取り付けた先部
材により固定した筆記具における把持部材構造にあっ
て、前記凹部を軸筒の前端から後方に向かって順次大径
となるよう形成すると共に、前記把持部材の内径を前端
から 後方に向かって順次大径となるよう形成し前記凹部
に密着させたので、簡単に、しかも確実に把持部材を軸
筒に取り付けることができる。According to the present invention, a concave portion is formed in the front portion of the barrel, a holding member made of a material softer than the material of the barrel is attached to the recess, and the holding member is fixed by a tip member attached to the tip of the barrel. In the gripping member structure of the writing instrument, the concave portion is formed so as to gradually increase in diameter from the front end of the barrel toward the rear, and the inner diameter of the gripping member is adjusted to the front end.
The concave portion is formed so that the diameter gradually increases from
The gripping member can be easily and securely attached to the shaft cylinder.
【図１】本発明の第１例を示す縦半断面図。FIG. 1 is a longitudinal half sectional view showing a first example of the present invention.
【図２】図１の要部拡大図。FIG. 2 is an enlarged view of a main part of FIG.
【図３】把持部材の変形例を示す要部縦半断面図。FIG. 3 is a longitudinal half sectional view of a main part showing a modification of the gripping member.
【図４】把持部材の変形例を示す要部縦半断面図。FIG. 4 is a longitudinal half sectional view of a main part showing a modification of the gripping member.
【図５】把持部材の変形例を示す横断面図。FIG. 5 is a cross-sectional view showing a modification of the gripping member.
【図６】 本発明の第３例を示す要部縦半断面図。 FIG. 6 is a vertical half sectional view of a main part showing a third example of the present invention.
【図７】 従来の技術を示す縦半断面図。 FIG. 7 is a longitudinal half sectional view showing a conventional technique.
１ 軸筒本体 ２ 前軸 ３ 先部材 ４ 後軸 ３ａ 係止部 ５ 芯繰り出し機構 ６ 芯タンク ７ チャック ８ 芯戻り止め部材 ９ クリップ １０ ノックキャップ １１ 凹部 １１ａ 後端部 １１ｂ 溝部 １１ｃ 没入溝 １２ 把持部材 １２ａ 突部 １３ 雄螺子部 １３ａ 案内筒部 DESCRIPTION OF SYMBOLS 1 Shaft cylinder main body 2 Front shaft 3 Front member 4 Rear shaft 3a Locking part 5 Core feeding mechanism 6 Core tank 7 Chuck 8 Core detent member 9 Clip 10 Knock cap 11 Depression 11a Rear end 11b Groove 11c Submerged groove 12 Gripping member 12a Projection 13 Male screw 13a Guide tube
Claims (2)
に軸筒の材質より柔らかい材質の把持部材を取り付け、
その把持部材を軸筒先端に取り付けた先部材により固定
した筆記具における把持部材構造にあって、前記凹部を
軸筒の前端から後方に向かって順次大径となるよう形成
すると共に、前記把持部材の内径を前端から後方に向か
って順次大径となるよう形成し前記凹部に密着させたこ
とを特徴とする筆記具における把持部材構造。1. A concave portion is formed in a front portion of a barrel, and a holding member made of a material softer than the material of the barrel is attached to the concave portion.
There the gripping member to the gripping member structure in writing instrument fixed by the preceding member attached to Jikuto tip, the recess from the front end of the barrel so as to form so as to be sequentially larger diameter toward the rear, the gripping member Inside diameter from front end to back
The gripping member structure of a writing instrument, wherein the gripping member is formed so as to have a large diameter sequentially and is closely attached to the concave portion .
に軸筒の材質より柔らかい材質の把持部材を取り付け、
その把持部材を軸筒先端に取り付けた先部材により固定
した筆記具における把持部材構造にあって、前記凹部の
長手方向に溝部を形成するとともに、その溝部に係合す
る突部を把持部材の内側に形成したことを特徴とする請
求項１記載の筆記具における把持部材構造。2. A concave portion is formed at a front portion of the barrel, and a holding member made of a material softer than the material of the barrel is attached to the concave portion.
In a gripping member structure of a writing instrument in which the gripping member is fixed by a tip member attached to the tip of a barrel, a groove is formed in a longitudinal direction of the concave portion, and a protrusion engaging with the groove is provided inside the gripping member. The gripping member structure of the writing instrument according to claim 1, wherein the gripping member is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32166894A JP3348180B2 (en) | 1994-11-30 | 1994-11-30 | Grasping structure of writing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32166894A JP3348180B2 (en) | 1994-11-30 | 1994-11-30 | Grasping structure of writing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08207485A JPH08207485A (en) | 1996-08-13 |
| JP3348180B2 true JP3348180B2 (en) | 2002-11-20 |
Family
ID=18135082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32166894A Expired - Fee Related JP3348180B2 (en) | 1994-11-30 | 1994-11-30 | Grasping structure of writing instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3348180B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005000600A1 (en) * | 2003-06-26 | 2005-01-06 | Kabushiki Kaisha Pilot Corporation | Writing instrument |
-
1994
- 1994-11-30 JP JP32166894A patent/JP3348180B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005000600A1 (en) * | 2003-06-26 | 2005-01-06 | Kabushiki Kaisha Pilot Corporation | Writing instrument |
| JPWO2005000600A1 (en) * | 2003-06-26 | 2006-11-30 | 株式会社パイロットコーポレーション | Writing instrument shaft |
| US7794164B2 (en) | 2003-06-26 | 2010-09-14 | Kabushiki Kaisha Pilot Corporation | Layered gripping member for a writing instrument |
| JP4602250B2 (en) * | 2003-06-26 | 2010-12-22 | 株式会社パイロットコーポレーション | Writing instrument shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08207485A (en) | 1996-08-13 |
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