JPH031048U

JPH031048U -

Info

Publication number: JPH031048U
Application number: JP6273389U
Authority: JP
Priority date: 1989-05-30
Filing date: 1989-05-30
Publication date: 1991-01-08

Description

[Brief explanation of drawings]

第１図はドツトインパクト形式の印字ヘツドを
分解して示す斜視図、第２図は組付け状態の印字
ヘツドを示す側断面図、第３図はヨークに多数の
電磁石を配設した状態を示す背面図、第４図は要
部の拡大斜視図である。図中、１……ヨーク、６……電磁石、８……ア
ーマチユア、９……フレーム、１０……支持部、
１２……保持壁、１３……外輪、１６……戻しば
ね（弾性部材）、１７……印字ワイヤである。 Figure 1 is an exploded perspective view of a dot-impact print head, Figure 2 is a side sectional view of the print head in an assembled state, and Figure 3 is a yoke with many electromagnets installed. The rear view and FIG. 4 are enlarged perspective views of main parts. In the figure, 1... Yoke, 6... Electromagnet, 8... Armature, 9... Frame, 10... Support part,
12...Retaining wall, 13...Outer ring, 16...Return spring (elastic member), 17...Printing wire.

Claims

[Claim for Utility Model Registration] A cylindrical yoke containing a large number of electromagnets, arranged radially opposite each of the electromagnets, with a printing wire fixed to the tip and a base end facing the end surface of the yoke. In the printing head, the frame 9 is provided with a large number of armatures that are swingably supported in the printing head, an elastic member that urges the armatures backward toward the non-printing side, and a frame that swingably supports the armatures. , a support part 10 having a hole in the center through which the printing wire is inserted; and a number of retaining walls 1 located between the plurality of armatures and formed radially around the outer periphery of the support part.
2 and an outer ring 13 connecting the retaining wall at its outer end.
A print head comprising: and a print head which is fitted and supported by the cylindrical yoke 1 at the outer end of the retaining wall 12, and is molded from a material made of a mixture of synthetic resin and magnetic metal powder.