JPH01112940U

JPH01112940U -

Info

Publication number: JPH01112940U
Application number: JP914788U
Authority: JP
Priority date: 1988-01-27
Filing date: 1988-01-27
Publication date: 1989-07-28

Description

[Brief explanation of the drawing]

第１図ａ，ｂ，ｃは、本考案のスプリングチヤ
ージ式インパクトドツトヘツドのアーマチユアの
外観図。第２図は、従来のスプリングチヤージ式
インパクトドツトヘツドのアーマチユアの外観図
。第３図は、スプリングチヤージ式インパクトド
ツトヘツドの断面図。第４図は、スプリングチヤ
ージ式インパクトドツトヘツドのアーマチユアの
斜め加工の一例を示す図。１……アーマチユア、２……印字ワイヤー、３
……板バネ、４……ワイヤーガイド、５……バネ
押さえ板、６……サイドヨーク、７……ヨーク板
、８……永久磁石、９……ベースフレーム、１０
……コア、１１……マグネツトコイル、１２……
治具、１３……アーマチユア斜め加工面。 Figures 1a, b, and c are external views of the armature of the spring-charged impact dot head of the present invention. Figure 2 is an external view of the armature of a conventional spring charge type impact dot head. FIG. 3 is a sectional view of a spring charge type impact dot head. FIG. 4 is a diagram showing an example of diagonal machining of the armature of a spring charge type impact dot head. 1... Armature, 2... Printing wire, 3
...Plate spring, 4 ... Wire guide, 5 ... Spring holding plate, 6 ... Side yoke, 7 ... Yoke plate, 8 ... Permanent magnet, 9 ... Base frame, 10
... Core, 11 ... Magnet coil, 12 ...
Jig, 13... Armature diagonally machined surface.

Claims

[Scope of utility model registration request]

Fix the armature to the free end of the leaf spring,
A side yoke having a shape surrounding the armature with a gap is disposed around the outer periphery of the armature, and a permanent magnet deflects the leaf spring to attract the armature to the end face of the core, and a magnetic coil absorbs the magnetic field of the permanent magnet. In the spring charge type impact dot head, the armature is released from the suction holding state by the strain energy stored in the leaf spring, and the dot wire is selectively protruded to perform dot printing. An impact dot head characterized by a chamfered part of the ridgeline.