JPH0483642U - - Google Patents
Info
- Publication number
- JPH0483642U JPH0483642U JP12901390U JP12901390U JPH0483642U JP H0483642 U JPH0483642 U JP H0483642U JP 12901390 U JP12901390 U JP 12901390U JP 12901390 U JP12901390 U JP 12901390U JP H0483642 U JPH0483642 U JP H0483642U
- Authority
- JP
- Japan
- Prior art keywords
- leaf spring
- bias
- core
- magnetic flux
- permanent magnet
- 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
- 230000004907 flux Effects 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Impact Printers (AREA)
Description
第１図は本考案に係るワイヤドツト印字ヘツド
の一実施例を示す要部縦断側面図、第２図は第１
図に示した同上印字ヘツドで用いている支点プレ
ート単体を示す上面図、第３図は第１図に示した
同上印字ヘツドの磁束の流れを説明するための図
、第４図は支点プレートの厚さと副コア先端部の
永久磁石による磁束密度との関係を示す図、第５
図は従来のワイヤドツト印字ヘツドの一例を示す
要部縦断側面図、第６図は第５図に示した同上印
字ヘツドの磁束の流れを説明するための図である
。
２……印字ワイヤ、４……永久磁石、６……バ
イアス用板ばね、９……アーマチユア、１０……
主コア、１１……副コア、１３……励磁コイル、
１４……励磁磁石、２０……支点プレート（非磁
性材料）。
FIG. 1 is a longitudinal cross-sectional side view of essential parts showing one embodiment of the wire dot printing head according to the present invention, and FIG.
Figure 3 is a diagram for explaining the flow of magnetic flux in the print head shown in Figure 1. Figure 4 is a top view of the fulcrum plate used in the print head shown in Figure 1. Figure 5 showing the relationship between thickness and magnetic flux density due to the permanent magnet at the tip of the sub-core.
This figure is a longitudinal sectional side view of the main part of an example of a conventional wire dot print head, and FIG. 6 is a diagram for explaining the flow of magnetic flux in the same print head shown in FIG. 5. 2... Printing wire, 4... Permanent magnet, 6... Bias plate spring, 9... Armature, 10...
Main core, 11... Sub-core, 13... Excitation coil,
14... Exciting magnet, 20... Fulcrum plate (non-magnetic material).
Claims (1)
、印字ワイヤを固着したアーマチユアをバイアス
用板ばねを介して吸引し、前記主コアの外周に励
磁コイルを巻回してなる励磁磁石の磁束により前
記主コア内を通る前記永久磁石の磁束を打ち消し
て前記バイアス用板ばねを開放させ、前記バイア
ス用板ばねを揺動させて前記印字ワイヤのインパ
クト動作を生起させるワイヤドツト印字ヘツドに
おいて、 前記副コアと前記バイアス用板ばねとの接触面
に非磁性材を介装したことを特徴とするワイヤド
ツト印字ヘツド。[Claims for Utility Model Registration] An armature to which a printing wire is fixed is attracted by a pair of main and sub cores magnetized by a permanent magnet via a bias leaf spring, and an excitation coil is wound around the outer periphery of the main core. The magnetic flux of the permanent magnet passing through the main core is canceled out by the magnetic flux of the excitation magnet that is rotated, thereby opening the bias leaf spring, causing the bias leaf spring to swing and causing an impact motion of the printing wire. A wire dot printing head, characterized in that a non-magnetic material is interposed on the contact surface between the sub-core and the bias plate spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12901390U JPH0483642U (en) | 1990-11-29 | 1990-11-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12901390U JPH0483642U (en) | 1990-11-29 | 1990-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0483642U true JPH0483642U (en) | 1992-07-21 |
Family
ID=31876443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12901390U Pending JPH0483642U (en) | 1990-11-29 | 1990-11-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0483642U (en) |
-
1990
- 1990-11-29 JP JP12901390U patent/JPH0483642U/ja active Pending