JPH02150247U - - Google Patents
Info
- Publication number
- JPH02150247U JPH02150247U JP6052389U JP6052389U JPH02150247U JP H02150247 U JPH02150247 U JP H02150247U JP 6052389 U JP6052389 U JP 6052389U JP 6052389 U JP6052389 U JP 6052389U JP H02150247 U JPH02150247 U JP H02150247U
- Authority
- JP
- Japan
- Prior art keywords
- needle
- length
- spring
- rear end
- shorter
- 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.)
- Pending
Links
- 230000005284 excitation Effects 0.000 claims 1
Landscapes
- Impact Printers (AREA)
Description
第１図は本考案の一実施例に係りニードルの支
持構造及びその動作を示す縦断側面図、第２図は
ドツトプリンタヘツドの一般的な構造を示す縦断
側面図、第３図及び第４図は従来のニードルの支
持構造及びその動作を示す縦断側面図である。
２……電磁コイル、３……コア、４……アーマ
チユア、１０……ニードル、１３……ニードルガ
イド、１４……拡開部、１５……ニードルスプリ
ング、１８……筒体。
FIG. 1 is a longitudinal side view showing a needle support structure and its operation according to an embodiment of the present invention, FIG. 2 is a longitudinal side view showing the general structure of a dot printer head, and FIGS. 3 and 4 are FIG. 2 is a longitudinal side view showing a conventional needle support structure and its operation. 2... Electromagnetic coil, 3... Core, 4... Armature, 10... Needle, 13... Needle guide, 14... Expanded portion, 15... Needle spring, 18... Cylindrical body.
Claims (1)
アーマチユアを駆動してニードルの後端を叩打す
るドツトプリンタヘツドにおいて、前記ニードル
の後端に拡開部を設け、前記ニードルの後端付近
を摺動自在に保持するニードルガイドの端面と前
記拡開部の端部とに両端が当接するニードルスプ
リングを前記ニードルの外周に遊嵌し、前記ニー
ドルスプリングの圧縮長さより短い長さに設定さ
れて前記ニードルより硬度が低い材料により形成
された筒体を前記ニードルの外周と前記ニードル
スプリングの内周との間に遊嵌したことを特徴と
するドツトプリンタヘツド。 In a dot printer head that drives an armature to strike the rear end of a needle by the excitation action of an electromagnetic coil wound around a core, an enlarged portion is provided at the rear end of the needle so that the needle can freely slide around the rear end. A needle spring having both ends in contact with the end face of the needle guide held in the needle and the end of the expanded portion is loosely fitted around the outer periphery of the needle, and the length is set to be shorter than the compressed length of the needle spring, and the length is set to be shorter than the compressed length of the needle spring. A dot printer head characterized in that a cylindrical body made of a material with low hardness is loosely fitted between the outer periphery of the needle and the inner periphery of the needle spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6052389U JPH02150247U (en) | 1989-05-25 | 1989-05-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6052389U JPH02150247U (en) | 1989-05-25 | 1989-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02150247U true JPH02150247U (en) | 1990-12-25 |
Family
ID=31587959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6052389U Pending JPH02150247U (en) | 1989-05-25 | 1989-05-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02150247U (en) |
-
1989
- 1989-05-25 JP JP6052389U patent/JPH02150247U/ja active Pending
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