JP2641570B2 - Connection structure of manual operation knob of paper feeder of printer - Google Patents
Connection structure of manual operation knob of paper feeder of printerInfo
- Publication number
- JP2641570B2 JP2641570B2 JP1213460A JP21346089A JP2641570B2 JP 2641570 B2 JP2641570 B2 JP 2641570B2 JP 1213460 A JP1213460 A JP 1213460A JP 21346089 A JP21346089 A JP 21346089A JP 2641570 B2 JP2641570 B2 JP 2641570B2
- Authority
- JP
- Japan
- Prior art keywords
- manual operation
- operation knob
- cylindrical portion
- printer
- connection structure
- 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 - Lifetime
Links
Landscapes
- Handling Of Sheets (AREA)
Description
【発明の詳細な説明】 〔概要〕 プリンタの用紙送り装置の手動操作ノブの連結構造に
関し、 回転操作によってクラック等の発生しない、耐久性の
良い手動操作ノブの連結構造を提供することを目的と
し、 用紙送り装置の回転軸の端部を、円柱の外周面を部分
的に平面に切り欠いた形状に形成すると共に、上記回転
軸の端部と略同一の断面形状の孔を有する筒状部を手動
操作ノブに突設して、上記手動操作ノブの孔に、上記回
転軸の端部を着脱自在に嵌め込むようにしたものにおい
て、上記筒状部を回転軸線方向に沿って割るすり割りを
筒状部の平面部に穿設して構成する。DETAILED DESCRIPTION OF THE INVENTION [Overview] Regarding a connection structure of a manual operation knob of a paper feeding device of a printer, an object of the present invention is to provide a connection structure of a manual operation knob with good durability that does not generate cracks or the like due to rotation operation. The end of the rotating shaft of the paper feeding device is formed in a shape in which the outer peripheral surface of the cylinder is partially cut out in a plane, and a cylindrical portion having a hole having substantially the same cross-sectional shape as the end of the rotating shaft is manually operated. The end of the rotating shaft is detachably fitted into the hole of the manual operating knob by protruding from the operating knob, and a slot for dividing the cylindrical portion along the rotating axis direction is provided. It is formed by drilling in the flat part of the shape.
〔産業上の利用分野〕 この発明は、プリンタの用紙送り装置の手動操作ノブ
の連結構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of a manual operation knob of a paper feeder of a printer.
プラテンなど、プリンタの用紙送り装置はモータによ
って駆動されるが、手動でも駆動することができるよう
に、手動操作ノブが設けられている。そのような手動操
作ノブは一般に、プラテン等の端部に着脱自在に嵌め込
むことができるようになっている。A paper feed device of a printer such as a platen is driven by a motor, but is provided with a manual operation knob so that it can be driven manually. Such a manually operated knob is generally adapted to be removably fitted to an end of a platen or the like.
第５図は従来のプリンタの用紙送り装置の手動操作ノ
ブの連結構造を示している。51はプラテン。52は、プラ
テンの回転軸。53は手動操作ノブ。54は、手動操作ノブ
に突設された筒状部である。プラテンの回転軸52の外周
面は、部分的に平面56に切り欠かれている。そして、従
来は、手動操作ノブ53側の筒状部54は、回転軸52と略同
一の断面形状に形成されて、その平面部57と対向する位
置即ち、平面部57とは反対側に、回転軸線方向に沿うす
り割り58が穿設されていた。このすり割り58の存在によ
って、筒状部54を弾性的に少し押し拡げて、筒状部54に
回転軸52を嵌め込むことができる。FIG. 5 shows a connection structure of a manual operation knob of a paper feeder of a conventional printer. 51 is a platen. 52 is the rotation axis of the platen. 53 is a manually operated knob. Reference numeral 54 denotes a cylindrical portion protruding from the manual operation knob. The outer peripheral surface of the rotation shaft 52 of the platen is partially cut out in a flat surface 56. Conventionally, the cylindrical portion 54 on the side of the manual operation knob 53 is formed to have substantially the same cross-sectional shape as the rotating shaft 52, and a position facing the flat portion 57, that is, on the side opposite to the flat portion 57, A slot 58 along the axis of rotation was drilled. Due to the presence of the slit 58, the cylindrical portion 54 can be elastically pushed and expanded slightly, and the rotary shaft 52 can be fitted into the cylindrical portion 54.
しかし、従来の手動操作ノブの連結構造では、上述の
ように、筒状部54の平面部57と対向する位置にすり割り
58を形成していたので、手動操作ノブ53を回転させる
と、例えば第６図に示されるように、平面部57と円弧部
との境界の角部59において、筒状部54にクラック60が発
生することがあった。However, in the connection structure of the conventional manual operation knob, as described above, the manual operation knob is slit at a position facing the flat portion 57 of the tubular portion 54.
When the manual operation knob 53 is rotated, for example, as shown in FIG. 6, a crack 60 is formed in the cylindrical portion 54 at the corner 59 of the boundary between the flat portion 57 and the arc portion as shown in FIG. Occurred.
これは、第６図に示されるように、筒状部54に回転力
Ｆを加えると、Ｆ×L1という大きなモーメントが角部59
を拡げるように作用して、角部59に集中応力が発生する
からである。有限要素法によって解析したところ、筒状
部54の外周に5kgの回転力が加わったとき、角部59に最
大2kg/mm2の集中応力が発生した。This is because, as shown in Figure 6, the addition of rotational force F to the cylindrical portion 54, F × L large moment of one corner portion 59
This causes the concentrated stress to be generated at the corner portion 59. When analyzed by the finite element method, when a rotational force of 5 kg was applied to the outer periphery of the cylindrical portion 54, a concentrated stress of 2 kg / mm 2 was generated at the corner 59 at the maximum.
本発明は、そのような従来の欠点を解消し、回転操作
によってクラック等の発生しない、耐久性の良い手動操
作ノブの連結構造を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional drawbacks and to provide a durable manual operation knob coupling structure that does not cause cracks or the like due to a rotation operation.
上記の目的を達成するため、本発明のプリンタの用紙
送り装置の手動操作ノブの連結構造は、実施例を説明す
るための第１図に示されるように、用紙送り装置の回転
軸１の端部を、円柱の外周面を部分的に平面２に切り欠
いた形状に形成すると共に、上記回転軸１の端部と略同
一の断面形状の孔３を有する筒状部４を手動操作ノブ５
に突設して、上記手動操作ノブ５の孔３に、上記回転軸
１の端部を着脱自在に嵌め込むようにしたものにおい
て、上記筒状部４を回転軸線方向に沿って割るすり割り
６を筒状部４の平面部７に穿設したことを特徴とする。In order to achieve the above-mentioned object, the connecting structure of the manual operation knob of the paper feeder of the printer according to the present invention, as shown in FIG. The cylindrical part 4 having a hole 3 having the same cross-sectional shape as the end of the rotary shaft 1 is formed by manually operating the knob 5.
And the end of the rotary shaft 1 is removably fitted into the hole 3 of the manual operation knob 5, and the cylindrical portion 4 is split along the rotation axis direction. 6 is formed in the flat portion 7 of the tubular portion 4.
回転軸１の端部を手動操作ノブ５の筒状部４の孔３に
嵌め込んだ状態で、手動操作ノブ５を回転させると、実
施例を説明するための第３図に示されるように、筒状部
４の円弧部と平面部７との間の角部９を拡げようとする
モーメントＦ×L2が作用する。When the manual operation knob 5 is rotated in a state where the end of the rotating shaft 1 is fitted in the hole 3 of the cylindrical portion 4 of the manual operation knob 5, as shown in FIG. 3 for explaining the embodiment. , A moment F × L 2 acting to expand the corner 9 between the arc portion of the cylindrical portion 4 and the plane portion 7 acts.
しかし、すり割り６が角部９の近傍にあってL2が小さ
いので、角部９には大きな集中応力は発生しない。However, since the slit 6 is near the corner 9 and L 2 is small, no large concentrated stress is generated in the corner 9.
図面を参照して実施例を説明する。 Embodiments will be described with reference to the drawings.
第４図は本発明を適用したプリンタを示しており、11
は、印字用紙10を巻き付けるプラテンであり、図示され
ていないラインフィードモータにより回転駆動される。
５は、プラテン11を手動で回転させる手動操作ノブであ
り、プラスチックモールド成形品である。12は、プラテ
ン11に印字用紙10を押さえるベイルローラ。13は、プラ
テン11に沿って移動して印字用紙10の表面に印字をす
る、ワイヤドット式の印字ヘッドである。FIG. 4 shows a printer to which the present invention is applied.
Is a platen on which the printing paper 10 is wound, and is rotated by a line feed motor (not shown).
Reference numeral 5 denotes a manual operation knob for manually rotating the platen 11, which is a plastic molded product. Reference numeral 12 denotes a bail roller for holding the printing paper 10 on the platen 11. Reference numeral 13 denotes a wire dot type print head which moves along the platen 11 to print on the surface of the printing paper 10.
なお、本発明において、プリンタとは、タイプライタ
などを含む概念である。In the present invention, the printer is a concept including a typewriter and the like.
第１図は、プラテン11と手動操作ノブ５との連結部を
示している。１は、プラテン11の回転軸であり、その端
部付近は、第３図にも示されるように、円柱の外周面を
部分的に平面２に切り欠いた形状に形成されている。FIG. 1 shows a connecting portion between the platen 11 and the manual operation knob 5. Reference numeral 1 denotes a rotating shaft of the platen 11, and the vicinity of its end is formed in a shape in which the outer peripheral surface of the cylinder is partially cut out in a plane 2 as shown in FIG.
一方、手動操作ノブ５側には、プラテン11の回転軸１
の端部と略同一の断面形状で、寸法的にはそれより僅か
に小さい程度の孔３を有する筒状部４が突設されてい
る。そして、筒状部４の平面部７には、回転軸線方向に
沿って筒状部４を割るすり割り６が穿設されている。On the other hand, the rotating shaft 1 of the platen 11 is
A cylindrical portion 4 having a hole 3 whose cross section is substantially the same as that of the end portion and whose dimension is slightly smaller than that of the end portion is projected. A slot 6 is formed in the flat portion 7 of the cylindrical portion 4 to split the cylindrical portion 4 along the rotation axis direction.
したがって、筒状部４の平面部７を回転軸１の平面部
２に合わせて筒状部４を回転軸１に押し付ければ、筒状
部４が弾性変形をしてすり割り６が僅かに拡がり、孔３
内に回転軸１の端部が嵌め込まれる。このようにして、
手動操作ノブ５を、プラテン11の回転軸１の端部に着脱
自在に取り付けることができる。第２図は、回転軸１に
手動操作ノブ５が取り付けられた状態を示している。Therefore, if the flat part 7 of the cylindrical part 4 is aligned with the flat part 2 of the rotating shaft 1 and the cylindrical part 4 is pressed against the rotating shaft 1, the cylindrical part 4 is elastically deformed and the slit 6 is slightly deformed. Spread, hole 3
The end of the rotating shaft 1 is fitted therein. In this way,
The manual operation knob 5 can be detachably attached to the end of the rotating shaft 1 of the platen 11. FIG. 2 shows a state where the manual operation knob 5 is attached to the rotating shaft 1.
本発明においては、すり割り６は、平面部７の中央付
近を通るように、平面部７側に穿設されている。したが
って、手動操作ノブ５を回転軸１の端部に取り付けた状
態で回転させると、第３図に示されるように、筒状部４
に回転力Ｆが加わり、筒状部４の平面部７と円弧部との
間の角部９を拡げようのする力が作用する。しかし、す
り割り６が角部９の近傍にあって、角部９を拡げようと
するモーメントはＦ×L2と小さいので、角部９に加わる
応力は、第６図の場合に比べて非常に小さいものであ
る。有限要素法によって、第６図の場合と同条件で解析
したところ、角部９に加わる応力は第６図の場合の約半
分であり、最大応力は、円弧部の途中10において発生
し、1.2kg/mm2であった。In the present invention, the slit 6 is formed in the flat portion 7 so as to pass near the center of the flat portion 7. Therefore, when the manual operation knob 5 is rotated while attached to the end of the rotating shaft 1, as shown in FIG.
, A force is exerted to expand the corner 9 between the flat portion 7 and the arc portion of the cylindrical portion 4. However, since the slot 6 is in the vicinity of the corner 9 and the moment for expanding the corner 9 is as small as F × L 2 , the stress applied to the corner 9 is much higher than in the case of FIG. Is small. When analyzed by the finite element method under the same conditions as in FIG. 6, the stress applied to the corner 9 is about half of that in FIG. 6, and the maximum stress is generated in the middle 10 of the circular arc part. kg / mm 2 .
なお、上記実施例においては用紙送り装置がプラテン
であるが、本発明はそれに限定されるものではなく、用
紙送りローラなどを手動操作する部分であってもよい。In the above embodiment, the sheet feeder is a platen, but the present invention is not limited to this, and may be a part for manually operating a sheet feed roller or the like.
本発明のプリンタの用紙送り装置の手動操作ノブの連
結構造によれば、手動操作ノブを回転操作したとき、そ
の筒状部には大きな集中応力が発生しないので、回転操
作に伴ってクラック等が発生せず、優れた耐久性を得る
ことができる。According to the connection structure of the manual operation knob of the paper feeding device of the printer of the present invention, when the manual operation knob is rotated, a large concentrated stress is not generated in the cylindrical portion, so that a crack or the like is generated with the rotation operation. Without this, excellent durability can be obtained.
第１図は実施例の斜視図、 第２図は実施例の側面断面図、 第３図は実施例の回転操作時の正面断面図、 第４図は実施例のプリンタの斜視図、 第５図は従来例の斜視図、 第６図は従来例の回転操作時の正面断面図である。 図中、１……回転軸、 ２……平面、 ３……孔、 ４……筒状部、 ５……手動操作ノブ、 ６……すり割り。 1 is a perspective view of the embodiment, FIG. 2 is a side cross-sectional view of the embodiment, FIG. 3 is a front cross-sectional view of the embodiment when rotating, FIG. 4 is a perspective view of the printer of the embodiment, FIG. FIG. 6 is a perspective view of a conventional example, and FIG. 6 is a front sectional view of the conventional example at the time of a rotation operation. In the figure, 1 ... rotating shaft, 2 ... plane, 3 ... hole, 4 ... tubular part, 5 ... manual operation knob, 6 ... slot.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭62−114746（ＪＰ，Ｕ) 実開 昭62−9823（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 62-114746 (JP, U) Japanese Utility Model Sho 62-9823 (JP, U)
Claims (1)
柱の外周面を部分的に平面（２）に切り欠いた形状に形
成すると共に、 上記回転軸（１）の端部と略同一の断面形状の孔（３）
を有する筒状部（４）を手動操作ノブ（５）に突設し
て、 上記手動操作ノブ（５）の孔（３）に、上記回転軸
（１）の端部を着脱自在に嵌め込むようにしたものにお
いて、 上記筒状部（４）を回転軸線方向に沿って割るすり割り
（６）を、筒状部（４）の平面部（７）に穿設したこと
を 特徴とするプリンタの用紙送り装置の手動操作ノブの連
結構造。An end of a rotary shaft of a paper feeder is formed in a shape in which an outer peripheral surface of a cylinder is partially cut out in a plane, and an end of the rotary shaft is formed. Holes with almost the same cross-sectional shape (3)
The cylindrical portion (4) having a protrusion is provided on the manual operation knob (5), and the end of the rotary shaft (1) is detachably fitted into the hole (3) of the manual operation knob (5). A printer characterized in that a slit (6) for dividing the cylindrical portion (4) along the direction of the rotation axis is formed in a flat portion (7) of the cylindrical portion (4). Connection structure of manual operation knob of paper feeder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1213460A JP2641570B2 (en) | 1989-08-18 | 1989-08-18 | Connection structure of manual operation knob of paper feeder of printer |
| US07/746,817 US5148718A (en) | 1989-08-18 | 1991-08-15 | Knob for rotating a shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1213460A JP2641570B2 (en) | 1989-08-18 | 1989-08-18 | Connection structure of manual operation knob of paper feeder of printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0376664A JPH0376664A (en) | 1991-04-02 |
| JP2641570B2 true JP2641570B2 (en) | 1997-08-13 |
Family
ID=16639579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1213460A Expired - Lifetime JP2641570B2 (en) | 1989-08-18 | 1989-08-18 | Connection structure of manual operation knob of paper feeder of printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2641570B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629823U (en) * | 1985-07-03 | 1987-01-21 | ||
| JPS62114746U (en) * | 1986-01-09 | 1987-07-21 |
-
1989
- 1989-08-18 JP JP1213460A patent/JP2641570B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0376664A (en) | 1991-04-02 |
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