JPH0185035U

JPH0185035U -

Info

Publication number: JPH0185035U
Application number: JP1987178852U
Authority: JP
Priority date: 1987-11-26
Filing date: 1987-11-26
Publication date: 1989-06-06
Anticipated expiration: 2002-11-26
Also published as: JPH0616757Y2

Description

[Brief explanation of drawings]

第１図は、マグネツトアツセンブリの平面図、
第２図は、バネアツセンブリの平面図、第３図は
、ドツト印字ヘツドの先端を示す図、第４図は、
各ワイヤピンの動作時間、印字力を示すグラフ図
、第５図は、バネチヤージ式ドツト印字ヘツドを
説明する断面概略図、第６図は、プラテンと印字
ワイヤの距離差を説明する概略図である。１……バネチヤージ式ドツト印字ヘツド、１１
……ワイヤガイド、３０……マグネツトアツセン
ブリ、３１……電磁石、３１ａ……電磁コア、３
１ｂ……電磁コイル、３２……永久磁石、４０…
…バネアツセンブリ、４１……板バネ、４１ｖ…
…舌片、５０……アーマチユアアツセンブリ、５
１……アーマチユア、５２……円板状ヨーク、６
０……印字ワイヤ、Ｐ……ワイヤピン、７０……
プラテン。 Figure 1 is a plan view of the magnet assembly;
Fig. 2 is a plan view of the spring assembly, Fig. 3 is a view showing the tip of the dot printing head, and Fig. 4 is a plan view of the spring assembly.
FIG. 5 is a schematic cross-sectional view illustrating the spring charge type dot printing head, and FIG. 6 is a schematic diagram illustrating the distance difference between the platen and the printing wire. 1... Spring charge type dot printing head, 11
... wire guide, 30 ... magnet assembly, 31 ... electromagnet, 31a ... electromagnetic core, 3
1b... Electromagnetic coil, 32... Permanent magnet, 40...
...Spring assembly, 41...Plate spring, 41v...
... Tongue piece, 50 ... Armature assembly, 5
1... Armature, 52... Disc-shaped yoke, 6
0...Printing wire, P...Wire pin, 70...
platen.

Claims

[Scope of Claim for Utility Model Registration] A plurality of leaf springs are formed in a substantially annular shape with the tongues facing the center on a roughly disc-shaped spring assembly, and an armature with a wire pin attached to the tip is attached to the upper center surface of the leaf spring. The armature is arranged and fixed to the tongue piece, and the armature is arranged so as to be movable within the groove of the disc-shaped yoke, and the armature is in a state where it stores bending energy against the elasticity of the leaf spring. The magnetic flux of a permanent magnet is attracted to the electromagnetic core of the electromagnet provided on the lower surface of the armature, and the magnetic flux of the permanent magnet is erased by energizing the electromagnetic coil attached to the electromagnetic core, and the plate spring is In a dot printing head that prints by causing a wire pin to protrude from the tip of a guide frame together with the armature due to the bending energy of the dot printing head, the wire pin has a plurality of pins arranged substantially vertically from a center pin to an upper end pin and a lower end pin, and The cross-sectional area of the electromagnet core of the electromagnet corresponding to the armature to which the wire pin is attached is increased from the center pin to the upper end pin and the lower end pin, and the leaf spring corresponding to each armature to which the wire pin is attached is A dot printing head characterized in that the spring constant of the dot print head increases from the center pin to the upper end pin and the lower end pin.