JPS62107948U

JPS62107948U -

Info

Publication number: JPS62107948U
Application number: JP19821285U
Authority: JP
Priority date: 1985-12-25
Filing date: 1985-12-25
Publication date: 1987-07-10

Description

[Brief explanation of the drawing]

図は全て本考案の一実施例に係り、第１図はプ
リンタの概略側面図、第２図は活字ホイールの正
面図、第３図は選択ラチエツトの正面図、第４図
は活字ホイール、選択ラチエツト、駆動爪、選択
爪および電磁クラツチの関係を示す分解斜視図、
第５図ａ〜ｃは駆動軸と駆動爪の係合関係を示す
説明図、第６図ａ〜ｃは選択ラチエツトと選択爪
との係合関係を示す説明図、第７図ａはハンマの
平面図、第７図ｂは第７図ａのＥ―Ｅ線断面図、
第８図は誤印刷防止板の平面図、第９図はロール
保持体とインクロールの斜視図、第１０図は切換
えカムの斜視図、第１１図ａ〜ｃはロール保持体
と切換えカムとの係合関係を示す説明図、第１２
図ａ〜ｃはインクロールと活字ホイールとの関係
を示す説明図、第１３図は１行分の印刷動作中に
おける各動作の関係を示すタイミングチヤート、
第１４図は動力伝達系の概略を示す説明図、第１
５図ａ，ｂはその動力伝達系に備えられるクラツ
チ機構説明図、第１６図は従来のプリンタの要部
を示す説明図である。１……回転軸、２……駆動軸、３，４……切欠
部、５，５′……活字ホイール、６，６′……選
択ラチエツト、７，７′……活字体、８……ロツ
ク溝、１１，１１′……係合軸、１２，１２′…
…支軸、１３，１３′……歯部、１４，１４′…
…係止凸部、１６，１７……解除ピン（係爪部）
、１８，１８′，１９，１９′……係合穴、２０
，２０′……駆動爪、２１，２１′……突起、２
２，２２′……第１の腕部、２３，２３′……摺
動部（屈曲部）、２４，２４′……第２の腕部、
２５，２５′……選択爪、２６，２６′……爪部
、２７……回動軸、２９……リセツトカム、３０
，３０′……カム爪、３１……電磁クラツチ、３
２……係止ばね、３３……押圧ばね、３４……電
磁コイル、３６……ヨーク、４５……段落ち部、
４６……凸部、４７……ハンマ、４８……誤印刷
防止板、５２……押圧部、５３……切欠部、５４
……空隙、５７……穴、５８……突出部、５９…
…第１のインクロール、６０……第２のインクロ
ール、６１……ロール保持体、６２……支軸、６
３……第１のカム爪、６４……第２のカム爪、６
５……切換えカム、６６……第１のカム溝、６７
……第２のカム溝、６８……駆動歯車、６９……
ハンマ歯車、７２……回動歯車、７３……サンギ
ヤ、７４……ブラネツトアギヤ、７５……キヤリ
ア軸、７６……キヤリア、７７……リングギヤ、
７８……選択歯車、７９……回転支持軸、８０…
…駆動軸、８１……切欠部、８２……回転体、８
３……歯部、８５……係合軸、８６……駆動爪、
８７……突起、８８……選択レバー、９３……ソ
レノイド、９５……ガイド部、９６……係合凸部
。 The figures all relate to one embodiment of the present invention, in which Figure 1 is a schematic side view of the printer, Figure 2 is a front view of the type wheel, Figure 3 is a front view of the selection ratchet, and Figure 4 is the type wheel and selection. An exploded perspective view showing the relationship between the ratchet, drive pawl, selection pawl, and electromagnetic clutch;
Figures 5a to 5c are explanatory diagrams showing the engagement relationship between the drive shaft and the drive pawl, Figures 6a to 6c are explanatory diagrams showing the engagement relationship between the selection ratchet and the selection pawl, and Figure 7a is the illustration of the hammer. A plan view, FIG. 7b is a sectional view taken along the line EE in FIG. 7a,
Figure 8 is a plan view of the printing error prevention plate, Figure 9 is a perspective view of the roll holder and ink roll, Figure 10 is a perspective view of the switching cam, and Figures 11 a to c are the roll holder and switching cam. Explanatory diagram showing the engagement relationship, 12th
Figures a to c are explanatory diagrams showing the relationship between the ink roll and the type wheel, and Figure 13 is a timing chart showing the relationship between each operation during the printing operation for one line.
Figure 14 is an explanatory diagram showing the outline of the power transmission system,
5a and 5b are explanatory diagrams of a clutch mechanism provided in the power transmission system, and FIG. 16 is an explanatory diagram showing the main parts of a conventional printer. 1... Rotating shaft, 2... Drive shaft, 3, 4... Notch, 5, 5'... Type wheel, 6, 6'... Selection ratchet, 7, 7'... Type body, 8... Lock groove, 11, 11'...Engagement shaft, 12, 12'...
... Support shaft, 13, 13'... Teeth, 14, 14'...
...Latching convex part, 16, 17...Release pin (latching part)
, 18, 18', 19, 19'...Engagement hole, 20
, 20'... Drive claw, 21, 21'... Protrusion, 2
2, 22'...first arm part, 23, 23'...sliding part (bending part), 24, 24'...second arm part,
25, 25'... Selection pawl, 26, 26'... Claw portion, 27... Rotating shaft, 29... Reset cam, 30
, 30'...cam pawl, 31...electromagnetic clutch, 3
2... Locking spring, 33... Pressing spring, 34... Electromagnetic coil, 36... Yoke, 45... Step-down portion,
46... Convex portion, 47... Hammer, 48... Erroneous printing prevention plate, 52... Pressing portion, 53... Notch portion, 54
...Gap, 57...Hole, 58...Protrusion, 59...
...First ink roll, 60... Second ink roll, 61... Roll holder, 62... Support shaft, 6
3...First cam claw, 64...Second cam claw, 6
5...Switching cam, 66...First cam groove, 67
...Second cam groove, 68...Drive gear, 69...
Hammer gear, 72... Rotating gear, 73... Sun gear, 74... Blank gear, 75... Carrier shaft, 76... Carrier, 77... Ring gear,
78... Selection gear, 79... Rotation support shaft, 80...
... Drive shaft, 81 ... Notch, 82 ... Rotating body, 8
3...Tooth portion, 85...Engagement shaft, 86...Drive claw,
87...Protrusion, 88...Selection lever, 93...Solenoid, 95...Guide portion, 96...Engagement convex portion.

Claims

[Scope of Claim for Utility Model Registration] (1) A rotating shaft having a notch on the circumferential side, a type wheel attached to the rotating shaft and having typeface on the circumferential side, and a type wheel held by the type wheel,
a driving claw having a protrusion that can be engaged with the notch of the rotary shaft, and when the protrusion is engaged with the notch, the rotational force of the rotary shaft is transmitted to the type wheel; In the printer, the transmission of the rotational force of the rotation shaft to the type wheel is cut off when the engagement state between the rotary shaft and the notch is released, and the drive pawl is rotated by the type wheel. A selection ratchet is attached, and the drive claw has a first arm part which is rigid and has the projection, and a second arm part which is elastic and has a bent part at the tip.
The base of the first arm of the drive claw is rotatably held on a support shaft provided upright on the type wheel, and the bent portion at the tip of the second arm is attached to the type wheel. A printer characterized in that the printer is slidably locked to an engagement shaft installed vertically. (2) Claim (1) of the utility model registration claim is characterized in that the supporting shaft and the engaging shaft of the type wheel are provided at substantially opposite positions across the center of the rotating shaft. printer.