JPS625342Y2 - - Google Patents

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Publication number
JPS625342Y2
JPS625342Y2 JP18317479U JP18317479U JPS625342Y2 JP S625342 Y2 JPS625342 Y2 JP S625342Y2 JP 18317479 U JP18317479 U JP 18317479U JP 18317479 U JP18317479 U JP 18317479U JP S625342 Y2 JPS625342 Y2 JP S625342Y2
Authority
JP
Japan
Prior art keywords
carriage
rack
gear
digit
worm gear
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
Application number
JP18317479U
Other languages
Japanese (ja)
Other versions
JPS56102056U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP18317479U priority Critical patent/JPS625342Y2/ja
Publication of JPS56102056U publication Critical patent/JPS56102056U/ja
Application granted granted Critical
Publication of JPS625342Y2 publication Critical patent/JPS625342Y2/ja
Expired legal-status Critical Current

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Description

【考案の詳細な説明】 本考案は活字輪を用いた小型のシリアルインパ
クト式の印字装置に関する。
[Detailed Description of the Invention] The present invention relates to a small serial impact type printing device using a type wheel.

最近の小型卓上電子計算機(電卓)の多機能
化、高級機志向化に伴つて、小型のプリンタを内
蔵した電卓が市販されている。これらの電卓に内
蔵するプリンタとしては、活字輪を行方向に順次
移送すなわち、活字輪を回転可能に保持したキヤ
リツジを行方向に移動可能に配設し、さらにこの
キヤリツジを最下位桁方向にばねで引張つてお
く。また、キヤリツジの下面には、揺動自在な長
板状の桁上げ用ラツクが行方向に配設されてお
り、この桁上げ用ラツクの縁部にはラツク歯が長
手方向に沿つて設けられている。そして、キヤリ
ツジの下面には桁上げ用ラツクのラツク歯と噛合
するスクリーン状歯車(ウオーム歯車)を回転自
在に設ける。印字を行なう場合、キヤリツジが最
下位桁位置にあるとき、まず活字輪を回転させて
所望の活字が印字位置に来たとき印字ハンマを動
作させ、インクが付着した活字へ用紙を打ち付け
て最下位桁の印字を行なう。次いでラツク歯と噛
合しているスクリユー状歯車の回転により、該歯
車と共にキヤリツジが高位桁方向に移送され、桁
送りが行なわれる。桁送りが行なわれた後上述の
如き印字動作が再度行なわれて次の桁の印字が行
なわれる。このような印字動作が必要桁分だけ行
なわれた後、桁上げ用ラツクが揺動してラツク歯
とスクリユー状歯車との噛合を外し、キヤリツジ
は引張りばねの力で最下位桁の位置に戻る。
2. Description of the Related Art Recently, small desktop electronic calculators (calculators) have become more multi-functional and more expensive, and calculators with built-in small printers have become commercially available. The printers built into these calculators are designed to sequentially transport the type wheel in the row direction, in other words, a carriage that rotatably holds the type wheel is arranged so as to be movable in the row direction, and then this carriage is moved in the direction of the lowest digit by a spring. Keep it pulled. In addition, a swingable long plate-shaped carry rack is arranged on the lower surface of the carriage in the row direction, and rack teeth are provided along the longitudinal direction on the edge of this carry rack. ing. A screen-shaped gear (worm gear) that meshes with the rack teeth of the carry rack is rotatably provided on the lower surface of the carriage. When printing, when the carriage is at the lowest digit position, first rotate the type wheel, and when the desired type comes to the printing position, operate the print hammer, strike the paper against the ink-covered type, and move it to the lowest position. Print the digits. Next, by the rotation of the screw-shaped gear meshing with the rack teeth, the carriage is transferred together with the gear towards the higher digit, thereby performing digit feeding. After the digit is shifted, the above-described printing operation is performed again to print the next digit. After this printing operation has been performed for the required number of digits, the carry rack swings to disengage the rack teeth from the screw gear, and the carriage returns to the lowest digit position by the force of the tension spring. .

ところで、上述の印字装置は、キヤリツジリタ
ーンのトリガとしてブランク打ち時のハンマ動作
を利用しているため、比較的複雑なカム機構を有
し、且つ紙送り機構への駆動力の伝達にクラツチ
機構を用いていたので、機構が複雑になり、組立
ても比較的煩雑であつた。
By the way, since the above-mentioned printing device uses the hammer action during blank striking as a trigger for carriage return, it has a relatively complicated cam mechanism and also requires a clutch mechanism to transmit the driving force to the paper feed mechanism. The mechanism was complicated and the assembly was relatively complicated.

本考案は上記の点に鑑み成されたもので、その
目的は、ラツクとスクリユーによるキヤリツジ移
送機構を用いた超小型のシリアルプリンタにおい
てキヤリツジリターン機構を簡素化した製品を提
供することにある。
The present invention has been developed in view of the above points, and its purpose is to provide a product with a simplified carriage return mechanism in an ultra-compact serial printer using a carriage transfer mechanism using a rack and screw.

次に本考案の一実施例を、図面を参照しつつ詳
細に説明する。
Next, one embodiment of the present invention will be described in detail with reference to the drawings.

第1図は、本考案の印字装置の平面図であり、
図中1は枠板、1a及び1bは枠板の両側に設け
られた側板で該側板1a及び1bには回転するレ
ール2が掛け渡されている。3はキヤリツジで、
レール2に沿つて左右すなわち行方向に移動可能
である。4はフアンクシヨン記号印字用の活字
輪、5は数字印字用の活字輪で、活字輪5のみが
キヤリツジ3に保持されている。各活字輪には回
転軸6が貫通してスプライン結合されている。な
お、両活字輪は回転軸6によつて回転されるが、
活字輪4は第1図において左方向へ1桁相当分の
み移動可能であり、活字輪5は最左端まで移動可
能である。7は引張りばねで、一端は側板1aに
固定され、他端はキヤリツジ3に固定され、キヤ
リツジ3をイニシアル位置すなわち第1図の位置
に引つ張つている。8はキヤリツジ3を行方向に
桁送りするための桁上げ用のラツクで、桁送り用
のラツク歯8aが設けられている。なお、9は引
張りばね7をガイドするガイド部材で、側板1b
に取付けられている。11は印字ハンマで、側板
1aと1bに軸支されたハンマ軸10に取付けら
れ、ハンマ軸10の回転により揺動する。印字ハ
ンマ11の打撃面には、いずれか一方の活字輪に
よる印字を防止する切欠部11aが形成されてい
る。60は切欠き11aと対向する位置に設けた
マスク、12は駆動モータ、13は紙送り補助ロ
ーラ、14は印字ハンマ11と活字輪4,5間に
挿入された記録紙、3aは活字輪5を支持するキ
ヤリツジアーム、61はインクローラ、62はイ
ンクローラカバー保持筒、63は板バネ、64は
圧縮ばねである。30は回転軸6の端部に固着さ
れた回転円板、31は回転円板30上のプリント
接点と接離するバネ接片で、両者30,31で回
転軸6、即ち活字輪4,5の回動位置を検出す
る。
FIG. 1 is a plan view of the printing device of the present invention,
In the figure, 1 is a frame plate, 1a and 1b are side plates provided on both sides of the frame plate, and a rotating rail 2 is spanned between the side plates 1a and 1b. 3 is the carriage,
It is movable left and right along the rail 2, that is, in the row direction. 4 is a type wheel for printing function symbols, 5 is a type wheel for printing numbers, and only the type wheel 5 is held in the carriage 3. A rotary shaft 6 passes through each type ring and is spline-coupled. Note that both type wheels are rotated by the rotating shaft 6,
The type wheel 4 can be moved leftward in FIG. 1 by an amount corresponding to one digit, and the type wheel 5 can be moved to the leftmost end. Reference numeral 7 designates a tension spring, one end of which is fixed to the side plate 1a and the other end of which is fixed to the carriage 3, and tensions the carriage 3 to the initial position, that is, the position shown in FIG. 8 is a carry rack for moving the carriage 3 in the row direction, and is provided with a carry rack tooth 8a. In addition, 9 is a guide member that guides the tension spring 7, and the side plate 1b
installed on. Reference numeral 11 denotes a printing hammer, which is attached to a hammer shaft 10 that is pivotally supported by the side plates 1a and 1b, and is swung by the rotation of the hammer shaft 10. A notch 11a is formed on the striking surface of the printing hammer 11 to prevent printing by either one of the type wheels. 60 is a mask provided at a position facing the notch 11a, 12 is a drive motor, 13 is a paper feed auxiliary roller, 14 is a recording paper inserted between the printing hammer 11 and the type wheels 4 and 5, and 3a is the type wheel 5 61 is an ink roller, 62 is an ink roller cover holding cylinder, 63 is a leaf spring, and 64 is a compression spring. 30 is a rotating disk fixed to the end of the rotating shaft 6; 31 is a spring contact piece that comes into contact with and separates from the printed contact on the rotating disk 30; Detects the rotational position of the

32は駆動モータ12の回転軸に固着した歯
車、33は両側板1a,1b間に軸支された回転
軸34の左端に固着した歯車、35は回転軸34
の右端に固着した歯車で、該歯車列32,33,
35によつてモータ12の回転は側板1a側から
側板1b側へ伝達される。更に歯車35の回転
は、該歯車35と噛合つた歯車36に伝達され、
前記回転軸6上に該軸6とは別個に回動自在であ
る歯車36の回転をクラツチによつて適宜選択的
に別異の回転系に伝達することによつて、後述す
る活字選択、印字ハンマ11の駆動、キヤリツジ
3の桁送り、紙送りが単一の駆動モータ12の同
一方向の定速回転によつて行なわれるようになつ
ている。
32 is a gear fixed to the rotating shaft of the drive motor 12, 33 is a gear fixed to the left end of the rotating shaft 34 supported between the side plates 1a and 1b, and 35 is the rotating shaft 34.
A gear fixed to the right end of the gear train 32, 33,
35, the rotation of the motor 12 is transmitted from the side plate 1a side to the side plate 1b side. Further, the rotation of the gear 35 is transmitted to a gear 36 meshing with the gear 35,
By selectively transmitting the rotation of a gear 36 on the rotary shaft 6 that is rotatable independently from the shaft 6 to a different rotary system as appropriate, character selection and printing, which will be described later, are carried out. Driving the hammer 11, feeding the carriage 3, and feeding the paper are performed by a single drive motor 12 rotating at a constant speed in the same direction.

第1図においては、側板1bの右側に上述した
各回転系が紙面と垂直な方向で重複した位置関係
にあるので、これを展開して第2図に示す。
In FIG. 1, the above-mentioned rotation systems are located on the right side of the side plate 1b in an overlapping positional relationship in a direction perpendicular to the plane of the paper, and this is expanded and shown in FIG. 2.

第2図において、37は回転軸6と一体回転す
るラチエツト、15は回転軸6上に該軸6とは別
個に回動自在であるように軸支された主歯車であ
る。38は歯車36と回転軸6との間の回転伝達
を制御する第1のクラツチ、39は歯車36と主
歯車15との間の回転伝達を制御する第2のクラ
ツチで、両クラツチ38,39は電磁石40で駆
動される作動腕41で制御され、一方のクラツチ
が回転伝達可能である時には、他方のクラツチが
回転伝達不能状態にあり、歯車36の回転は択一
的に回転軸6又は主歯車15に伝えられる。
In FIG. 2, 37 is a ratchet that rotates integrally with the rotation shaft 6, and 15 is a main gear supported on the rotation shaft 6 so as to be rotatable independently of the shaft 6. 38 is a first clutch that controls rotation transmission between the gear 36 and the rotating shaft 6; 39 is a second clutch that controls rotation transmission between the gear 36 and the main gear 15; both clutches 38, 39; is controlled by an actuating arm 41 driven by an electromagnet 40, and when one clutch is capable of transmitting rotation, the other clutch is in a state of being unable to transmit rotation, and the rotation of the gear 36 is alternatively controlled by the rotating shaft 6 or the main clutch. The signal is transmitted to gear 15.

主歯車15の歯車(平歯車)15aは、前記レ
ール2と一体回転する歯車21と噛合つており、
主歯車15の回転時にはレール2が回動し、該レ
ール2と一体回転し且つキヤリツジ3と共に移動
するウオーム歯車23が回転し、前記ラツク8と
噛合つたウオーム歯車23の回転によつてキヤリ
ツジ3は行方向に順次移送される(桁送りされ
る)。
A gear (spur gear) 15a of the main gear 15 meshes with a gear 21 that rotates integrally with the rail 2,
When the main gear 15 rotates, the rail 2 rotates, and the worm gear 23, which rotates integrally with the rail 2 and moves together with the carriage 3, rotates. It is sequentially moved (shifted) in the row direction.

又、主歯車15の歯車15aは、側板1bに植
設した支軸(図示せず)に軸支されたハンマ駆動
用の歯車42とも噛合つており、主歯車15の回
転時には歯車42の側面の楕円状のカム42aに
よつて、前記ハンマ軸10に固着したレバー43
を押圧してハンマ軸10を回動させる(即ち、印
字ハンマ11を回動させる)。ここで、主歯車1
5は歯車21と歯車42とを同時に回転させるよ
うになつているが、前記ウオーム歯車23の歯部
23aは、略々半周に亘つて円周方向と平行に設
けた歯部と、残りの半周を円周方向に対して傾斜
させた通常のウオーム部分とからなつているた
め、歯車21が所定角度回転した後、歯部23a
のウオーム部分がラツク歯8aと噛合い、従つ
て、主歯車15は印字ハンマ11の駆動後、キヤ
リツジ3を桁送りするようになつている。又、歯
車15は所定角度(ハンマ駆動と桁送りに必要な
角度)回動すると、自動的に前記作動腕41を駆
動し、第2のクラツチ39をオフ状態にすると共
に第1のクラツチ38をオン状態にし、歯車36
の回転を主歯車15から回転軸6に切換えて伝達
させるようになつている。(この活字選択、ハン
マ駆動、キヤリツジ桁送りのためのクラツチ機構
周辺に関しては、必要ならば前述した特願昭54〜
105673号を参照されたい。) 前記主歯車15には、前記歯車15aと一体に
間欠歯車15bが設けてあり、該間欠歯車15b
は第3図(紙送りとキヤリツジ桁送り機構の一部
簡略化した分解斜視図)から明らかなように、外
周の一部に歯幅の異なる長歯と短歯よりなる周知
の間欠駆動用の歯部が設けてある。16は中間歯
車体で、側板1bに植設した支軸(図示せず)に
軸支され、平歯車よりなる歯車16aと間欠歯車
16bとが一体に設けられており、歯車16aは
前記間欠歯車15bと係合している。18は紙送
り軸19に取付けた歯車で、上記間欠歯車16b
と係合している。20は紙送り軸19に固着した
紙送りローラで、前記の紙送り補助ローラ13と
の間に記録用紙14を挟持して紙送りを行なうよ
うになつている。
The gear 15a of the main gear 15 also meshes with a hammer driving gear 42 that is supported by a support shaft (not shown) installed in the side plate 1b, and when the main gear 15 rotates, A lever 43 fixed to the hammer shaft 10 by an elliptical cam 42a.
is pressed to rotate the hammer shaft 10 (that is, rotate the printing hammer 11). Here, main gear 1
5 rotates the gear 21 and the gear 42 at the same time, and the tooth portion 23a of the worm gear 23 has a tooth portion provided parallel to the circumferential direction over approximately half the circumference, and a tooth portion provided parallel to the circumferential direction over approximately half the circumference. Since the gear 21 is made up of a normal worm part that is inclined with respect to the circumferential direction, after the gear 21 has rotated by a predetermined angle, the tooth part 23a
The worm portion of the main gear 15 meshes with the rack teeth 8a, so that the main gear 15 moves the carriage 3 after the printing hammer 11 is driven. When the gear 15 rotates by a predetermined angle (an angle required for hammer drive and shift), it automatically drives the operating arm 41, turns off the second clutch 39, and turns off the first clutch 38. Turn on, gear 36
The rotation of the main gear 15 is switched and transmitted to the rotating shaft 6. (Regarding the clutch mechanism for type selection, hammer drive, and carriage advance, if necessary, please refer to the above-mentioned patent application filed in
Please refer to No. 105673. ) The main gear 15 is provided with an intermittent gear 15b integrally with the gear 15a, and the intermittent gear 15b
As is clear from Fig. 3 (partially simplified exploded perspective view of the paper feed and carriage digit feed mechanism), this is a well-known intermittent drive system consisting of long teeth and short teeth with different tooth widths on a part of the outer periphery. There are teeth. Reference numeral 16 denotes an intermediate gear body, which is rotatably supported by a support shaft (not shown) installed in the side plate 1b, and is integrally provided with a gear 16a consisting of a spur gear and an intermittent gear 16b, and the gear 16a is connected to the intermittent gear 16b. 15b. 18 is a gear attached to the paper feed shaft 19, which is the intermittent gear 16b.
is engaged with. Reference numeral 20 denotes a paper feed roller fixed to the paper feed shaft 19, which feeds the recording paper 14 by sandwiching it between it and the paper feed auxiliary roller 13.

そして、上記紙送りのための間欠歯車列は、主
歯車15、即ち、間欠歯車15bが1回転するご
とに中間歯車体16は1/8回転し、また間欠歯車
16bが1回転するごとに紙送り用の歯車18が
1/4回転し、これにつれて紙送りローラ20も回
転し、該紙送りローラ20が1/4回転する毎に記
録用紙14が1行分(1ピツチ)送られるように
なつている。
In the intermittent gear train for feeding the paper, the intermediate gear body 16 rotates 1/8 for each rotation of the main gear 15, that is, the intermittent gear 15b, and for each rotation of the intermittent gear 16b, the The feeding gear 18
The paper feed roller 20 rotates accordingly, and the recording paper 14 is fed by one line (one pitch) each time the paper feed roller 20 makes a quarter rotation.

又、前記ラツク歯8aを有するラツク8は、両
側板1a,1b間に回動自在に軸支されたラツク
軸50に取付けられており、ラツク軸50と共に
所定量回動自在となつている。そして、第1,4
図から明らかなように、側板1aに植設したピン
51と、ラツク8の端部に固着もしくは一体成形
したピン8bとの間には反転ばね52の両端が係
止されており、ラツク8に2つの安定位置を与え
るようになつている。又、ラツク8の側板1a側
の上面端(キヤリツジ3の最上位桁方向の端部)
には傾斜部を有するカム8cが一体に形成されて
おり、(第1,4,5図参照)、ラツク8の側板1
b側の下面側(キヤリツジ3のイニシアル位置側
の端部)には傾斜部を有するカム8dが一体に形
成されており、、上記カム8cはキヤリツジ3の
基部3bと係合自在とされ、他方のカム8dは、
キヤリツジ3より下方に垂下した折曲げ脚3dと
係合自在とされている。なお、前記ウオーム歯車
23は、キヤリツジ3の基部3b下部に抜け落ち
ぬように保持され、その歯部23aの一部をキヤ
リツジ3より露出しており、且つ前記レール2に
スプライン(軸)結合されている。
The rack 8 having the rack teeth 8a is attached to a rack shaft 50 rotatably supported between both side plates 1a and 1b, and is rotatable together with the rack shaft 50 by a predetermined amount. And the 1st and 4th
As is clear from the figure, both ends of the reversing spring 52 are locked between the pin 51 implanted in the side plate 1a and the pin 8b fixed to or integrally formed with the end of the rack 8. It is designed to provide two stable positions. Also, the upper end of the rack 8 on the side plate 1a side (the end in the direction of the highest digit of the carriage 3)
A cam 8c having an inclined portion is integrally formed on the side plate 1 of the rack 8 (see FIGS. 1, 4, and 5).
A cam 8d having an inclined portion is integrally formed on the lower surface side of the b side (the end on the initial position side of the carriage 3), and the cam 8c is capable of engaging with the base 3b of the carriage 3, and the other The cam 8d is
It can be freely engaged with a bending leg 3d hanging downward from the carriage 3. The worm gear 23 is held under the base 3b of the carriage 3 so as not to fall off, a part of its teeth 23a are exposed from the carriage 3, and is splined (shaft) connected to the rail 2. There is.

そして、キヤリツジ3の復帰状態、即ち、第1
図示の一行分の印字開始位置においては、ラツク
8は上方位置にあり、ラツク歯8aがキヤリツジ
3のウオーム歯車23と係合状態にある。この状
態からウオーム歯車23の回転によりキヤリツジ
3が逐次移送され、一行分の印字終了端に達し、
更に続くウオーム歯車23の回動によつてキヤリ
ツジ3が更に同方向に移送されると、前記基部3
bが前記ラツク8のカム8cと係合し、ラツク8
を下方に押下げる。従つて、ラツク8は前記反転
ばね52によつて、ラツク軸50を中心として下
方に反転して第4図で2点鎖線図示の位置に保持
され、キヤリツジ3のウオーム歯車23はラツク
歯23aとの噛合い状態から解放される。する
と、キヤリツジ3は前記引張りばね7によつて第
1図示の位置へ急速に復帰し、前記キヤリツジ3
の折曲げ脚3dが前記ラツク8のカム8dと係合
し、下方位置にあるラツク8を反転させて上方位
置へ復帰させ、ラツク歯8aとウオーム歯車23
とを再び係合させるようになつている。
Then, the return state of the carriage 3, that is, the first
At the illustrated printing start position for one line, the rack 8 is in the upper position, and the rack teeth 8a are in engagement with the worm gear 23 of the carriage 3. From this state, the carriage 3 is sequentially transferred by the rotation of the worm gear 23 until it reaches the end of printing for one line.
When the carriage 3 is further transferred in the same direction by the further rotation of the worm gear 23, the base 3
b engages with the cam 8c of the rack 8, and the rack 8
Press down. Therefore, the rack 8 is reversed downward about the rack shaft 50 by the reversing spring 52 and held in the position shown by the two-dot chain line in FIG. released from the interlocking state. Then, the carriage 3 is quickly returned to the position shown in the first figure by the tension spring 7, and the carriage 3 is
The bent leg 3d of the rack 8 engages with the cam 8d of the rack 8, and the rack 8 in the lower position is reversed and returned to the upper position, and the rack teeth 8a and the worm gear 23
and are adapted to be re-engaged.

次に、上記実施例の動作について説明する。 Next, the operation of the above embodiment will be explained.

本考案に係る印字機構においては、印字動作中
は常時駆動モータ12には電圧が印加されて回転
しており、この回転力は第1のクラツチ38を通
じて回転軸6に伝えられる。したがつて、回転軸
6は回転し、2つの活字輪4,5は回転してい
る。そして、印字機構に印字指令に基づき、所望
のフアンクシヨン記号が印字位置に来ると、前記
電磁石40が励磁され、前述したように回転軸6
を停止させると共にハンマ軸10が回転して印字
ハンマ11を揺動させ、記録用紙14を活字輪4
に押し付け、フアンクシヨン記号が印字される。
なお、このとき活字輪5は前記切欠部11a(第
1図参照)に位置し、記録用紙と活字輪5の間に
マスク60が介在するので、数字の印字は行なわ
れない。
In the printing mechanism according to the present invention, during the printing operation, voltage is constantly applied to the drive motor 12 and it rotates, and this rotational force is transmitted to the rotating shaft 6 through the first clutch 38. Therefore, the rotating shaft 6 is rotating and the two type wheels 4, 5 are rotating. Then, when a desired function symbol comes to the printing position based on a printing command to the printing mechanism, the electromagnet 40 is energized and the rotating shaft 6 is energized as described above.
At the same time, the hammer shaft 10 rotates to swing the printing hammer 11 and move the recording paper 14 to the printing wheel 4.
The function symbol is printed.
At this time, the type ring 5 is located in the notch 11a (see FIG. 1), and the mask 60 is interposed between the recording paper and the type ring 5, so that no numbers are printed.

1桁目の印字が終了すると、前述したようにキ
ヤリツジ3の下に設けられ、ラツク8のラツク歯
8aと噛合した桁送り用のウオーム歯車23の回
転によりキヤリツジ3は1桁分左にシフト(桁上
げ)される。このときキヤリツジアーム3aに保
持されている活字輪5はキヤリツジ3の移動につ
れて2桁目にシフトするが、活字輪4はばね15
に押されて左方向にシフトするものの、キヤリツ
ジ3の動きには追従せず、印字ハンマ11の切欠
部11aと対向した位置に停止し、以後1行の印
字が終了してキヤリツジ3がリターンするまでこ
の位置に留まる(図示してはいないが、活字輪4
は回転軸6に設けられた段部に当接する)。
When the printing of the first digit is completed, the carriage 3 is shifted to the left by one digit ( carry). At this time, the type wheel 5 held by the carriage arm 3a shifts to the second digit as the carriage 3 moves;
Although it is pushed to the left and shifts to the left, it does not follow the movement of the carriage 3 and stops at a position facing the notch 11a of the printing hammer 11. After that, one line of printing is completed and the carriage 3 returns. Remain in this position until (not shown, type wheel 4
comes into contact with a step provided on the rotating shaft 6).

一方、キヤリツジ3が2桁目にシフトし、所望
の数字が印字位置に来ると、前述の如き印字動作
が行なわれて2桁目の印字が行なわれる。
On the other hand, when the carriage 3 shifts to the second digit and the desired number comes to the printing position, the printing operation as described above is performed and the second digit is printed.

このような印字動作が続いた後、1行の印字が
終了すると、残りの桁は全てブランクとなり、キ
ヤリツジ3は最高位桁まで運ばれる。そして、キ
ヤリツジ3が最高位桁よりさらに上位へ桁上げさ
れようとするとき、前述したようにラツク8のカ
ム8cとキヤリツジ3の基部3bが係合して、ラ
ツク8を下方位置へ押下げ、キヤリツジ3のウオ
ーム歯車23とラツク歯8aとの噛合いが外れキ
ヤリツジ3は引張りばね7の引張り力で第1図示
のイニシアル位置に戻ると共に、その折曲げ脚3
dによつてラツク8を上方位置へ押上げ、再びラ
ツク歯8aとウオーム歯車23とを噛合わせる。
After such a printing operation continues, when one line of printing is completed, all remaining digits become blank and the carriage 3 is carried to the highest digit. Then, when the carriage 3 is about to be carried up to a higher position than the highest digit, the cam 8c of the rack 8 and the base 3b of the carriage 3 engage as described above, pushing the rack 8 down to the lower position. The worm gear 23 of the carriage 3 and the rack teeth 8a are disengaged, and the carriage 3 returns to the initial position shown in the first figure by the tensile force of the tension spring 7, and its bent leg 3
d, the rack 8 is pushed up to the upper position, and the rack teeth 8a and the worm gear 23 are meshed again.

一方、前記主歯車15は、上記一連のハンマ駆
動、キヤリツジ3の桁送り動作中は前述したよう
に第2のクラツチ39によつて駆動モータ12の
回転を受け、1桁目の印字動作において主歯車1
5は1/2回転し、これに伴つて桁上げ用の歯車2
1並びにハンマ駆動用の歯車35を1回転させ、
印字ハンマ11を駆動すると共にウオーム歯車2
3を1回転させてキヤリツジ3を2桁目に移動さ
せる。この時、主歯車15の間欠歯車15bは間
欠歯車16aを1/8回転させる。
On the other hand, the main gear 15 is rotated by the drive motor 12 by the second clutch 39 during the series of hammer driving and digit feeding operations of the carriage 3, and is the main gear in the first digit printing operation. gear 1
5 rotates 1/2, and along with this, the carry gear 2
1 and the hammer drive gear 35 are rotated once,
While driving the printing hammer 11, the worm gear 2
Rotate 3 once to move carriage 3 to the second digit. At this time, the intermittent gear 15b of the main gear 15 rotates the intermittent gear 16a by 1/8 rotation.

2桁目の印字動作においても、主歯車15は同
様に1/2回転し、歯車21を1回転させてキヤリ
ツジ3を3桁目に移動させる。この時、間欠歯車
15bも1/2回転するが中間歯車体16と噛合わ
ないため、これを回転させない。
In the printing operation for the second digit, the main gear 15 similarly rotates 1/2 turn, the gear 21 rotates once, and the carriage 3 is moved to the third digit. At this time, the intermittent gear 15b also rotates by 1/2, but since it does not mesh with the intermediate gear body 16, it is not rotated.

以上、上述の如き動作が繰返されて主歯車15
が1/2回転するごとにキヤリツジ3は1桁ずつ進
み、主歯車15の1回転ごとに中間歯車体16を
1/8回転させる。
The above-described operations are repeated and the main gear 15
The carriage 3 advances by one digit every 1/2 rotation of the main gear 15, and the intermediate gear body 16 advances every 1 rotation of the main gear 15.
Rotate 1/8 turn.

そして、15行目までキヤリツジ3が進行した
後、主歯車15が1回転し歯車21とウオーム歯車
23とが1回転すると、前述のようにキヤリツジ
3の基部3bがラツク8のカム8cを押圧して、
ラツク8を下方に反転させ、キヤリツジ3を復帰
させ、一方、このキヤリツジリターン動作のため
の主歯車15の回転で中間歯車体16が1/8回転
し、この際初めて中間歯車体16の間欠歯車16
bと紙送り用の歯車18とが係合し、紙送り用の
歯車18、即ち紙送りローラ20を1/4回転させ
て1行分の紙送り動作が行なわれる。
After the carriage 3 advances to the 15th line, the main gear 15 makes one rotation and the gear 21 and worm gear 23 make one rotation, and the base 3b of the carriage 3 presses the cam 8c of the rack 8 as described above. hand,
The rack 8 is reversed downward to return the carriage 3. Meanwhile, the rotation of the main gear 15 for this carriage return operation causes the intermediate gear body 16 to rotate 1/8, and for the first time, the intermediate gear body 16 is gear 16
b engages with the paper feeding gear 18, and the paper feeding gear 18, ie, the paper feeding roller 20, is rotated 1/4 of a turn to carry out a paper feeding operation for one line.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は何れも本考案の一実施例に係り、第1図
は平面図、第2図は要部の簡略化した展開説明
図、第3図は要部の簡略化した分解斜視図、第4
図はキヤリツジとラツクとの関係を示す側面図、
第5図はラツクの簡略化した正面図である。 3……キヤリツジ、4,5……活字輪、6……
回転軸、7……引張りばね、8……ラツク、8a
……ラツク歯、8c,8d……カム、11……印
字ハンマ、12……駆動モータ、14……記録用
紙、15……主歯車、16……中間歯車体、18
……歯車、20……紙送りローラ、21……歯
車、23……ウオーム歯車、50……ラツク軸、
52……反転ばね。
The drawings all relate to one embodiment of the present invention, and FIG. 1 is a plan view, FIG. 2 is a simplified exploded explanatory view of the main parts, FIG. 3 is a simplified exploded perspective view of the main parts, and FIG. 4 is a simplified exploded perspective view of the main parts.
The figure is a side view showing the relationship between the carriage and rack.
FIG. 5 is a simplified front view of the rack. 3...carriage, 4,5...type wheel, 6...
Rotating shaft, 7...Tension spring, 8...Rack, 8a
... Rack tooth, 8c, 8d ... Cam, 11 ... Printing hammer, 12 ... Drive motor, 14 ... Recording paper, 15 ... Main gear, 16 ... Intermediate gear body, 18
... Gear, 20 ... Paper feed roller, 21 ... Gear, 23 ... Worm gear, 50 ... Rack shaft,
52...Reversal spring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 活字輪を回転可能に保持して桁方向に移動可能
であり且つばねによつて最下位桁方向にバイアス
されたキヤリツジと、該キヤリツジに保持されて
キヤリツジと共に移動するウオーム歯車と、ウオ
ーム歯車にモータの回転を伝達する伝達機構と、
揺動自在に保持され前記ウオーム歯車との噛合位
置と分離位置を取るラツクと、該ラツクのキヤリ
ツジの最上位桁方向端面にありキヤリツジが最上
位桁よりさらに移動したときキヤリツジと係合し
てラツクを揺動させ該ラツクとウオーム歯車との
係合を解除する第1のカムと、該ラツクのキヤリ
ツジの最下位桁方向端面にありキヤリツジが最下
位桁に移動したときキヤリツジと係合してラツク
を揺動させ該ラツクとウオーム歯車とを係合させ
る第2のカムとを有するラツクと、ラツクをウオ
ーム歯車との噛合位置と分離位置に反転位置決め
する反転バネとを備え、ラツクと噛合つたウオー
ム歯車の回転によつてキヤリツジを逐次桁送りす
るとともに、キヤリツジの最上位桁位置以上の移
送によつて前記ラツクを反転させてラツクとウオ
ーム歯車との噛合いを解除し、キヤリツジを前記
ばねによつて最下位桁方向に復帰させ、キヤリツ
ジの最下位桁位置までの移送によつて前記ラツク
を反転させてラツクとウオーム歯車とを噛合せし
めることを特徴とする印字装置。
A carriage that rotatably holds the type ring and is movable in the direction of the digits and is biased toward the lowest digit by a spring, a worm gear held by the carriage and moved together with the carriage, and a motor attached to the worm gear. a transmission mechanism that transmits the rotation of the
a rack that is swingably held and takes a meshing position and a separation position with the worm gear, and a rack that is located on an end face of the carriage in the direction of the uppermost digit and engages with the carriage when the carriage moves further than the uppermost digit. a first cam that swings to release the engagement between the rack and the worm gear, and a first cam that is located on the end face of the carriage of the rack in the direction of the lowest digit and engages with the carriage when the carriage moves to the lowest digit. a worm gear meshed with the rack; The carriage is sequentially moved by the rotation of the gear, and by moving the carriage beyond the most significant digit position, the rack is reversed to release the engagement between the rack and the worm gear, and the carriage is moved by the spring. The printing device is characterized in that the rack is returned in the direction of the least significant digit, the carriage is transferred to the least significant digit position, the rack is reversed, and the rack and worm gear are engaged with each other.
JP18317479U 1979-12-31 1979-12-31 Expired JPS625342Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18317479U JPS625342Y2 (en) 1979-12-31 1979-12-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18317479U JPS625342Y2 (en) 1979-12-31 1979-12-31

Publications (2)

Publication Number Publication Date
JPS56102056U JPS56102056U (en) 1981-08-11
JPS625342Y2 true JPS625342Y2 (en) 1987-02-06

Family

ID=29693485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18317479U Expired JPS625342Y2 (en) 1979-12-31 1979-12-31

Country Status (1)

Country Link
JP (1) JPS625342Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922787A (en) * 1982-07-30 1984-02-06 Canon Electronics Inc Small serial printer

Also Published As

Publication number Publication date
JPS56102056U (en) 1981-08-11

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