JPH0366749U

JPH0366749U -

Info

Publication number: JPH0366749U
Application number: JP12718189U
Authority: JP
Priority date: 1989-11-01
Filing date: 1989-11-01
Publication date: 1991-06-28

Description

[Brief explanation of drawings]

第１図は本考案による第１実施例の要部断面図
、第２図は本考案による第２実施例の要部断面図
、第３図は第２図のレシジアルシートの斜視図、
第４図は変形例の要部断面図、第５図は第１の従
来例を示す半断面図を含む外観図、第６図は第２
の従来例を示す半断面図を含む外観図である。１……第１のヨーク、２……アツパヨーク、３
……マグネツトヨーク、４……板バネ、６……ア
ーマチユア、７……印字ワイヤ、１４……ベース
ヨーク、１５……コア、１６……コイル、１９，
２４，２５，２６……レシジアルシート。 FIG. 1 is a cross-sectional view of a main part of a first embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part of a second embodiment of the present invention, and FIG.
Fig. 4 is a sectional view of the main part of the modified example, Fig. 5 is an external view including a half sectional view showing the first conventional example, and Fig. 6 is the second conventional example.
FIG. 2 is an external view including a half sectional view showing a conventional example. 1...First yoke, 2...Atsupa yoke, 3
... Magnet yoke, 4 ... Leaf spring, 6 ... Armature, 7 ... Printing wire, 14 ... Base yoke, 15 ... Core, 16 ... Coil, 19,
24, 25, 26...residial sheet.

Claims

[Scope of Claim for Utility Model Registration] 1. An electromagnet and an armature fixed to a leaf spring supported in a cantilevered manner are provided in a magnetic path formed by a permanent magnet placed on the periphery, and a residial sheet is further provided between the electromagnet and the armature. A wire dot printing head is provided in which the armature is attracted to the electromagnet by the magnetic flux of the permanent magnet, causing the leaf spring to bend, and the magnetic flux of the permanent magnet is canceled by the biasing of the electromagnet to drive the printing wire fixed to the tip of the armature. A wire dot printing head characterized in that the entire outer periphery of the resigil is fixed to the periphery, and the electromagnet side is shielded from the armature side. 2. An electromagnet and an armature fixed to a cantilever-supported leaf spring are provided in the magnetic path of the permanent magnet placed on the periphery, and a rotation fulcrum of the armature is provided between the support of the leaf spring and the electromagnet, Furthermore, a residial sheet is provided between the electromagnet and the armature, and the magnetic flux of the permanent magnet attracts the armature to the electromagnet, causing the armature to rotate around the rotational fulcrum.The magnetic flux of the permanent magnet is canceled by the biasing of the electromagnet, and the armature In a wire dot printing head that is fixed to the tip of a wire dot to drive a printing wire, the residial sheet has a convex cross section corresponding to the rotational fulcrum, and its entire outer periphery is fixed to the periphery, with the electromagnet side facing the armature. A wire dot printing head characterized by being shielded from the side.