JPS61120555U

JPS61120555U -

Info

Publication number: JPS61120555U
Application number: JP410285U
Authority: JP
Priority date: 1985-01-18
Filing date: 1985-01-18
Publication date: 1986-07-30

Description

[Brief explanation of drawings]

第１図ないし第２１図は本考案の実施例に係る
サーマルプリンタを説明するための図で、第１図
および第２図はプリンタの選択レバーを取付けた
状態および選択レバーを取外した状態での動力伝
達機構の平面図、第３図および第４図は駆動側ギ
アの平面図および側面図、第５図は第４図Ａ―Ａ
線上の拡大断面図、第６図および第７図は紙送り
用従動側ギアの平面図および側面図、第８図およ
び第９図はキヤリツジ移送用従動側ギアの平面図
および側面図、第１０図は押えバネの斜視図、第
１１図は第１ギア半体の平面図、第１２図は第１
１図Ｂ―Ｂ線上の断面図、第１３図は第２ギア半
体の平面図、第１４図は第１３図Ｃ―Ｃ線上の断
面図、第１５図は線バネの平面図、第１６図はプ
ーリ筒体を取り外した状態での駆動プーリの平面
図、第１７図は第１６図Ｄ―Ｄ線上の断面図、第
１８図はキヤリツジ移送用従動側ギアと駆動プー
リの平歯部との噛合状態を示す説明図、第１９図
は選択レバーの分解斜視図、第２０図は主動側ギ
アと選択レバーの係合状態を示す一部を切断した
拡大側面図、第２１図は選択レバーの比較例を示
す斜視図、第２２図はプリンタの一部概略構成図
、第２３図は従来のプリンタの主動側ギアと従動
側ギアの噛合状態を示す拡大平面図である。１６……キヤリツジ移送用従動側ギア、１７…
…主動側ギア、１８……紙送り用従動側ギア、２
２……キヤリツジ、２５……第２アイドルギア、
３２……選択レバー、３８……歯部、４０……尖
端部、４１……平行部、４２……環状溝、４４…
…歯部、４６……尖端部、４７……平行部、４９
……歯部、５３……尖端部、５４……平行部、５
５……押えバネ、５６……回動基部片、５７……
係合片、６７……調整穴、６９……内コーナ部、
７２……うず巻きバネ、７５……第１ギア半体、
７６……第２ギア半体、７７……線バネ、８１…
…貫通部、８８……バネ掛け爪片。 Figures 1 to 21 are diagrams for explaining a thermal printer according to an embodiment of the present invention, and Figures 1 and 2 show the printer with the selection lever attached and with the selection lever removed. A plan view of the power transmission mechanism, FIGS. 3 and 4 are a plan view and a side view of the driving gear, and FIG. 5 is a plan view of the drive gear.
6 and 7 are plan views and side views of the driven gear for paper feeding, FIGS. 8 and 9 are plan views and side views of the driven gear for carriage transfer, and FIG. The figure is a perspective view of the presser spring, Figure 11 is a plan view of the first gear half, and Figure 12 is the first gear half.
Figure 1 is a sectional view taken along the line B-B in Figure 1, Figure 13 is a plan view of the second gear half, Figure 14 is a sectional view taken along the line CC in Figure 13, Figure 15 is a plan view of the wire spring, and Figure 16 is a sectional view taken along the line C--C in Figure 13. The figure is a plan view of the drive pulley with the pulley barrel removed, Figure 17 is a sectional view taken along line D--D in Figure 16, and Figure 18 is a diagram showing the driven side gear for carriage transfer and the spur tooth portion of the drive pulley. Fig. 19 is an exploded perspective view of the selection lever, Fig. 20 is a partially cutaway enlarged side view showing the engagement state of the driving side gear and the selection lever, and Fig. 21 is the selection lever. FIG. 22 is a partial schematic configuration diagram of a printer, and FIG. 23 is an enlarged plan view showing a state of engagement between a main drive side gear and a driven side gear of a conventional printer. 16... Driven gear for carriage transfer, 17...
...Driver side gear, 18...Driver side gear for paper feeding, 2
2...Carriage, 25...Second idle gear,
32... Selection lever, 38... Tooth portion, 40... Tip portion, 41... Parallel portion, 42... Annular groove, 44...
...Tooth part, 46... Point part, 47... Parallel part, 49
...Tooth part, 53... Point part, 54... Parallel part, 5
5... Presser spring, 56... Rotating base piece, 57...
Engagement piece, 67...adjustment hole, 69...inner corner part,
72... Spiral spring, 75... First gear half,
76...Second gear half body, 77...Wire spring, 81...
...Penetration part, 88...Spring hook piece.

Claims

[Scope of utility model registration request]

In a printer including a driving side gear and a driven side gear that can be moved into and out of contact with the driving side gear and can mesh with the driving side gear, each of the teeth of the driving side gear and the driven side gear is , a printer characterized in that it has a pointed end at the tooth tip and a parallel part extending in the direction of the tooth tip from the tooth tip to the root of the tooth.