JPS6210890B2 - - Google Patents

Info

Publication number
JPS6210890B2
JPS6210890B2 JP54002651A JP265179A JPS6210890B2 JP S6210890 B2 JPS6210890 B2 JP S6210890B2 JP 54002651 A JP54002651 A JP 54002651A JP 265179 A JP265179 A JP 265179A JP S6210890 B2 JPS6210890 B2 JP S6210890B2
Authority
JP
Japan
Prior art keywords
take
winding
pawl
ratchet wheel
drive lever
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
JP54002651A
Other languages
Japanese (ja)
Other versions
JPS5593749A (en
Inventor
Kenji Onodera
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 by Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP265179A priority Critical patent/JPS5593749A/en
Publication of JPS5593749A publication Critical patent/JPS5593749A/en
Publication of JPS6210890B2 publication Critical patent/JPS6210890B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Winding Of Webs (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、記録紙を巻取るためのプリンタの巻
取装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer winding device for winding recording paper.

〔従来の技術〕[Conventional technology]

従来のプリンタの巻取装置は、特開昭52−
20026号公報および特公昭48−39757号公報に記載
されているように、 常時回転するカムに、一端を接するレバーの揺
動運動をこのレバーのもう一方の端に回転自在に
軸支された送り爪で、(記録紙を巻取る)巻取軸
を駆動する爪車を回転させる機構であり、前記レ
バーの回転中心は、前記爪車の回転軸とは別の位
置におかれている。
The winding device of conventional printers was developed in Japanese Patent Application Laid-Open No.
As described in Japanese Patent Publication No. 20026 and Japanese Patent Publication No. 48-39757, the swinging motion of a lever that is in contact with one end of a constantly rotating cam is transferred to a feeder that is rotatably supported on the other end of the lever. It is a mechanism in which a pawl rotates a ratchet wheel that drives a take-up shaft (for winding up recording paper), and the center of rotation of the lever is located at a different position from the rotation axis of the ratchet wheel.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、従来のプリンタの巻取装置には、次の
ような欠点がある。
However, the conventional printer winding device has the following drawbacks.

レバーの回転中心が、爪車の軸心と一致してい
ないため、送り爪がレバーに軸支された軸心が描
く回転軌跡は爪車の歯先円弧よりずれることにな
る。特に、実施例に示された、レバーの回転中心
が、爪車の中心を基準にして、レバーに送り爪が
軸支された点より外側に配置されている場合に
は、前述したずれ量は非常に大きくなる。従つ
て、送り爪と爪車の歯との相対位置関係が送り時
にも変わることになる。このため、 (a) カム1回転当りで、爪車を送る事のできる最
大値は限られたものとなり、あまり大きくは設
定できない。また、 (b) 送り爪を爪車に常に係合させておくバネのバ
ネ力を大きくする必要があるため、動力損失が
大きく、又、送り爪と爪車が係合する部分の摩
耗が大きくなる。
Since the rotation center of the lever does not coincide with the axis of the ratchet wheel, the rotation locus drawn by the axis of the feed pawl that is pivotally supported by the lever deviates from the arc of the tip of the ratchet wheel. In particular, when the rotation center of the lever is located outside the point where the feed pawl is pivotally supported on the lever with respect to the center of the ratchet wheel as shown in the example, the amount of deviation described above is becomes very large. Therefore, the relative positional relationship between the feed pawl and the teeth of the ratchet wheel changes even during feeding. For this reason, (a) the maximum value that the ratchet wheel can send per one rotation of the cam is limited, and cannot be set too large. In addition, (b) it is necessary to increase the spring force of the spring that keeps the feed pawl always engaged with the ratchet wheel, resulting in large power loss and increased wear on the part where the feed pawl and ratchet wheel engage. Become.

の欠点が生じ、また、 (c) カム軸と、爪車軸の中心距離が大となる。disadvantages arise, and (c) The distance between the centers of the camshaft and pawl axle becomes large.

(d) レバーの回転軸を別にもうける必要がある。(d) It is necessary to provide a separate rotation shaft for the lever.

等の欠点が存在する。There are drawbacks such as:

本発明は、かかる問題点を解決するもので、そ
の目的は、 (a) カム1回転当りの、記録紙送り量が大きく、 (b) 動力損失が少なく、耐久性に優れ、 (c) 小型で、安価なプリンタの巻取装置を提供す
る添にある。
The present invention is intended to solve these problems, and its objectives are: (a) a large recording paper feed amount per cam rotation; (b) low power loss and excellent durability; and (c) compact design. This is an opportunity to provide an inexpensive printer winding device.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の巻取装置は、記録紙を巻取る為のプリ
ンタの巻取装置において、連続回転するプリンタ
の回転軸の回転と連動して常時回転するカムと、
このカムに追随する如く回転自在に巻取爪車軸に
軸支され、一端に巻取爪を回転自在に支持する駆
動レバーと、前記巻取爪とかみ合う巻取爪車と、
前記巻取爪を前記巻取爪車に係合させ、前記巻取
爪車を回転させる方向に付勢するバネ手段と、前
記巻取爪車の逆転を防止するための逆転止めと、
前記巻取爪車の回転力により記録紙を巻取る巻取
軸とからなることを特徴とする。
The winding device of the present invention is a winding device of a printer for winding up recording paper, and includes a cam that constantly rotates in conjunction with the rotation of a rotating shaft of the printer that rotates continuously;
a drive lever that is rotatably supported on a take-up pawl axle so as to follow the cam and rotatably supports the take-up pawl at one end; and a take-up pawl that engages with the take-up pawl;
a spring means for engaging the take-up pawl with the take-up ratchet and biasing the take-up ratchet in a direction to rotate the take-up ratchet; and a reversal stop for preventing the take-up ratchet from reversing;
It is characterized by comprising a take-up shaft that winds up the recording paper by the rotational force of the take-up ratchet wheel.

〔作用〕[Effect]

上記の構成によれば、駆動レバー23は、巻取
爪車26と同一の回転中心を持ち、巻取爪24の
駆動レバー23に軸支された軸心が描く回転軌跡
は、巻取爪車26の歯先円弧と同心となる。この
ため、送り角における巻取爪24と巻取爪車の歯
27との相対位置関係は変らない。従つて、巻取
爪24から巻取爪車26への動力伝達効率は高く
なり、送り時における巻取爪24の先端と巻取爪
車の歯には摩耗は生じない。
According to the above configuration, the drive lever 23 has the same rotation center as the take-up pawl wheel 26, and the rotation locus drawn by the axis of the take-up pawl 24, which is supported by the drive lever 23, is the same as the take-up pawl wheel 26. It is concentric with the tip arc of No. 26. Therefore, the relative positional relationship between the winding claw 24 and the teeth 27 of the winding ratchet wheel at the feed angle does not change. Therefore, the efficiency of power transmission from the take-up pawl 24 to the take-up pawl wheel 26 is increased, and no wear occurs on the tip of the take-up pawl 24 and the teeth of the take-up pawl wheel during feeding.

〔実施例〕〔Example〕

以下に本発明の実施例を図面にもとづいて説明
する。
Embodiments of the present invention will be described below based on the drawings.

第1図において、16はプリンタの動力となる
常時回転しているモータ、17はモータ軸、18
はモータプーリー、19はベルト、20はカムプ
ーリー、23は駆動レバー、24は巻取爪、25
は引張コイルバネ、26は巻取爪車、28は逆転
止め、29は巻取軸、31は巻取フレーム、6は
記録紙である。
In FIG. 1, 16 is a constantly rotating motor that powers the printer, 17 is a motor shaft, and 18
is a motor pulley, 19 is a belt, 20 is a cam pulley, 23 is a drive lever, 24 is a winding pawl, 25
26 is a tension coil spring, 26 is a take-up ratchet wheel, 28 is a reverse stopper, 29 is a take-up shaft, 31 is a take-up frame, and 6 is a recording paper.

動作原理を説明すると、常時連続回転しててる
プリンタの動力となつているモータ16にモータ
プーリー19がモータ軸11を介して固定されて
いる。モータプーリー18と巻取装置の偏心カム
21を有するカムプーリー20とは、ベルト19
により連結されており、モータ16の回転がカム
プーリー20に伝達される。カム−プーリー20
が回転することにより、偏心カム21は偏心カム
21に接している駆動レバー23に設けたL字曲
げの突出部22を、矢印A,B方向に動作させ
る。駆動レバー23は、巻取爪車軸30に回転可
能に軸支されている。駆動レバー23が矢印A方
向に回動すると、駆動レバー23に回転可能に軸
支された巻取爪24は、矢印C方向に巻取爪車2
6の歯を乗り越えながら動き、巻取爪24に係合
している引張コイルバネ25にエネルギーを貯え
る。この時、巻取爪24は巻取爪車26の歯27
に引張コイルバネ25によつて圧接されているの
で巻取爪車26も巻取爪24と同方向に回転しよ
うとするが、巻取フレーム31に一端を固定され
他端は巻取爪車の歯27と係合された弾性体から
なる逆転止め28により抑止されるため、巻取爪
24は巻取爪車の歯27をのり越え、巻取爪車2
6は回転しない。巻取爪車の歯27の背面27−
1の傾斜を小さくとることにより、巻取爪24が
巻取爪車26を矢印E方向に回転させようとする
力を少なくすることができる。
To explain the principle of operation, a motor pulley 19 is fixed via a motor shaft 11 to a motor 16 that continuously rotates at all times and serves as the power for the printer. A cam pulley 20 having a motor pulley 18 and an eccentric cam 21 of a winding device is a belt 19
The rotation of the motor 16 is transmitted to the cam pulley 20. Cam-pulley 20
As the eccentric cam 21 rotates, the eccentric cam 21 moves the L-shaped protrusion 22 provided on the drive lever 23 that is in contact with the eccentric cam 21 in the directions of arrows A and B. The drive lever 23 is rotatably supported by the take-up pawl axle 30. When the drive lever 23 rotates in the direction of the arrow A, the take-up pawl 24 rotatably supported by the drive lever 23 moves the take-up pawl wheel 2 in the direction of the arrow C.
It moves over the teeth of 6 and stores energy in the tension coil spring 25 that engages with the winding pawl 24. At this time, the winding pawl 24 is rotated by the teeth 27 of the winding pawl wheel 26.
Since the winding claw 26 is pressed against the winding coil spring 25 by the tension coil spring 25, the winding claw 26 also tries to rotate in the same direction as the winding claw 24, but one end is fixed to the winding frame 31 and the other end is connected to the teeth of the winding claw. Since the reversal stop 28 made of an elastic body is engaged with the reel 27, the take-up pawl 24 passes over the teeth 27 of the take-up pawl, and the take-up pawl 24
6 does not rotate. Back side 27- of the teeth 27 of the take-up ratchet wheel
By making the slope 1 small, the force exerted by the winding pawl 24 to rotate the winding ratchet wheel 26 in the direction of arrow E can be reduced.

以上が偏心カム21が最小径より最大径まで回
転した場合の動作である。
The above is the operation when the eccentric cam 21 rotates from the minimum diameter to the maximum diameter.

次に、偏心カム21が最大径より最小径回転し
た場合の動作を述べる。駆動レバー23は引張コ
イルバネ25によつて矢印D方向に回動し、巻取
爪車26は巻取爪車の歯27と係合している巻取
爪24によつて矢印F方向に回転する。巻取爪車
26の回転は、巻取爪車26と巻取軸29の周囲
に歯車部を設け、噛み合わせ伝達し、紙送りされ
てきた記録紙6を巻き取る。巻取爪24による巻
取り量はプリンタの紙送り部(図示されていな
い)から紙送りされる量よりも多く巻取れるよう
に駆動レバー23の回転角を設定しているので駆
動レバー23の突出部22が偏心カム21の最小
径と接することはない。巻取爪24は引張コイル
バネ25により常に引張られ、巻取爪車の歯27
を介して巻取爪車26と噛み合う巻取軸29にト
ルクを与え、記録紙6に張力を与えているので巻
き太りが生じない。
Next, the operation when the eccentric cam 21 rotates by the minimum diameter rather than the maximum diameter will be described. The drive lever 23 is rotated in the direction of arrow D by a tension coil spring 25, and the take-up ratchet wheel 26 is rotated in the direction of arrow F by the take-up pawl 24 that engages with teeth 27 of the take-up ratchet wheel. . The rotation of the take-up ratchet wheel 26 is transmitted through meshing gears provided around the take-up ratchet wheel 26 and the winding shaft 29, and winds up the fed recording paper 6. The rotation angle of the drive lever 23 is set so that the amount of paper taken up by the take-up claw 24 is greater than the amount of paper fed from the printer's paper feeding unit (not shown), so that the drive lever 23 does not protrude. The portion 22 never comes into contact with the minimum diameter of the eccentric cam 21. The take-up pawl 24 is constantly pulled by a tension coil spring 25, and the teeth 27 of the take-up pawl wheel
Torque is applied to the take-up shaft 29 that meshes with the take-up pawl 26 through the roller, and tension is applied to the recording paper 6, so that the winding does not become thick.

記録紙6の張力が大きくなり、その張力を巻取
爪車軸30まわりのトルクに換算した値が、引張
コイルバネ25の張力を巻取爪車軸30まわりの
トルクに換算した値より大きくなる場合において
は、偏心カム21が1回転した後は、偏心カム2
1が1回転した後は、偏心カム21は駆動レバー
23の突出部22には接するのみで、駆動レバー
23は回転しないため、巻取爪車26は図の矢印
F方向へは回転しない。従つて、本機構によれ
ば、記録紙には設定したトルク以上の張力は加わ
らない。
When the tension of the recording paper 6 becomes large and the value obtained by converting the tension into the torque around the take-up pawl axle 30 becomes larger than the value obtained by converting the tension of the tension coil spring 25 into the torque around the take-up pawl axle 30, , after the eccentric cam 21 rotates once, the eccentric cam 2
1 rotates once, the eccentric cam 21 only contacts the protrusion 22 of the drive lever 23, and the drive lever 23 does not rotate, so the take-up ratchet wheel 26 does not rotate in the direction of arrow F in the figure. Therefore, according to this mechanism, a tension greater than the set torque is not applied to the recording paper.

〔発明の効果〕〔Effect of the invention〕

本発明は、駆動レバーの回転中心を巻取爪車の
軸心とする構成をとつたことにより、以下の効果
を有する。
The present invention has the following effects by adopting a configuration in which the rotation center of the drive lever is the axis of the take-up ratchet wheel.

(a) 偏心カム1回転当りの巻取り爪車の送り量を
大きく設定でき、紙送りスピードの最大値を大
きくできる。
(a) The feed amount of the take-up ratchet wheel per rotation of the eccentric cam can be set to a large value, and the maximum value of the paper feed speed can be increased.

(b) 送り時に、巻取爪と巻取爪車の相対位置が変
化しないため、引張コイルバネ力を必要最小限
の値に設定でき、各回動及び摺動部の摩耗を減
らせ、動力損失も少なくする事ができる。
(b) Since the relative position of the take-up pawl and take-up ratchet does not change during feeding, the tension coil spring force can be set to the minimum necessary value, reducing wear on each rotating and sliding part and reducing power loss. I can do that.

(c) 偏心カムと巻取爪車の軸間距離を小さくでき
るため装置を小型化できる。
(c) The distance between the shafts of the eccentric cam and the take-up ratchet wheel can be reduced, so the device can be made smaller.

(d) 駆動レバー軸を別に設ける必要がないため、
安価な装置を供給できる。
(d) Since there is no need to provide a separate drive lever shaft,
We can supply inexpensive equipment.

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

第1図は本発明の一実施例を示す巻取装置の側
面図。 16……モータ、18……モータプーリー、1
9……ベルト、20……カムプーリー、21……
偏心カム、22……突出部、23……駆動レバ
ー、24……巻取爪、25……引張コイルバネ、
27……巻取爪車の歯、28……逆転止め、29
9……巻取軸、30……巻取爪車軸。
FIG. 1 is a side view of a winding device showing an embodiment of the present invention. 16...Motor, 18...Motor pulley, 1
9...Belt, 20...Cam pulley, 21...
Eccentric cam, 22...Protrusion, 23...Drive lever, 24...Take-up claw, 25...Tension coil spring,
27...Take-up ratchet tooth, 28...Reverse stopper, 29
9... Take-up shaft, 30... Take-up pawl axle.

Claims (1)

【特許請求の範囲】[Claims] 1 記録紙を巻取る為のプリンタの巻取装置にお
いて、連続回転するプリンタの回転軸の回転と連
動して常時回転するカムと、このカムに追随する
如く回転自在に巻取爪車軸に軸支され、一端に巻
取爪を回転自在に支持する駆動レバーと、前記巻
取爪とかみ合う巻取爪車と、前記巻取爪を前記巻
取爪車に係合させ、前記巻取爪車を回転させる方
向に付勢するバネ手段と、前記巻取爪車の逆転を
防止するための逆転止めと、前記巻取爪車の回転
力により記録紙を巻取る巻取軸とからなることを
特徴とする巻取装置。
1. In a printer's winding device for winding recording paper, there is a cam that constantly rotates in conjunction with the rotation of the printer's rotating shaft, which rotates continuously, and a shaft supported on the winding pawl axle so as to be able to rotate freely to follow the cam. a drive lever rotatably supporting a take-up claw at one end; a take-up ratchet wheel that engages with the take-up claw; and a drive lever that engages the take-up claw with the take-up ratchet wheel, and It is characterized by comprising a spring means for biasing in the direction of rotation, a reversal stopper for preventing the winding ratchet from reversing, and a winding shaft that winds the recording paper by the rotational force of the winding ratchet. A winding device for
JP265179A 1979-01-12 1979-01-12 Winder Granted JPS5593749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP265179A JPS5593749A (en) 1979-01-12 1979-01-12 Winder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP265179A JPS5593749A (en) 1979-01-12 1979-01-12 Winder

Publications (2)

Publication Number Publication Date
JPS5593749A JPS5593749A (en) 1980-07-16
JPS6210890B2 true JPS6210890B2 (en) 1987-03-09

Family

ID=11535252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP265179A Granted JPS5593749A (en) 1979-01-12 1979-01-12 Winder

Country Status (1)

Country Link
JP (1) JPS5593749A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5220026A (en) * 1975-08-08 1977-02-15 Seiko Epson Corp Wind-up device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5220026A (en) * 1975-08-08 1977-02-15 Seiko Epson Corp Wind-up device

Also Published As

Publication number Publication date
JPS5593749A (en) 1980-07-16

Similar Documents

Publication Publication Date Title
US4294553A (en) Ribbon feed mechanism
JPS6210890B2 (en)
JP2943276B2 (en) Paper feeder
US4443125A (en) Printer
US5289989A (en) Tape hub driving system with mechanism to prevent tape slackening during mode change
JPH0350716B2 (en)
US4386564A (en) Serial printer
JPS5839907Y2 (en) Ink ribbon feeder
JPH029978Y2 (en)
JPS6213246Y2 (en)
JP3895619B2 (en) Fishing reel
JP2634720B2 (en) Printer
JPH0559631U (en) Video cassette tape recorder tape loading device
JPS5837655Y2 (en) Ink ribbon reversal mechanism
JPH0712009Y2 (en) Ribbon running stabilization mechanism
JP2767930B2 (en) Pinch roller drive mechanism
JPH0341301Y2 (en)
JPS5917651Y2 (en) Ink ribbon feeding mechanism
JPH045084Y2 (en)
US6572281B2 (en) Film winding-rewinding apparatus for a camera
JPH0524839Y2 (en)
GB2103546A (en) Reversing ribbon drive mechanism
KR820001665B1 (en) Tape driving apparatus
JPS62257877A (en) Printer
JPS62295247A (en) Reproduction direction switching device for reciprocating type cassette tape recorder