JPS6046261A - Print head - Google Patents

Abstract

PURPOSE:To enable electric connection with a printer body simply by providing a printed circuit board between a print head base and a print head yoke through an insulator while an extruded piece provided on the circumference thereof is used as connector. CONSTITUTION:A printed circuit board 6 with a connector extruded piece 6a formed integral and a print head yoke member 7 are insulated with an insulation rubber plate 9, a setscrew 10 is provided to fix a print head yoke 7 inserted into a print head base 1 with a coil 8 inserted thereinto and connected to a printed circuit board while the printed circuit board 6 is grasped woth the base 1 and the yoke member 7. With such an arrangement, setting can be done simply by inserting the winding end of a driving coil 8 into a hole of the printed circuit board 6 to connect after insertion thereof into a notch slot 7b of the yoke member 7. As a connector extruded piece 6a is formed integral on the printed circuit board 6, electric connection can be done at a single action between the head and the printer body.

Description

[Detailed Description of the Invention] The present invention can be applied to printing for impact printers that use dots and dots made of wires and paper.
The object of the present invention is to provide a print head that has a simple configuration, has excellent wiring workability for a drive coil, and can be easily electrically connected to the main body of a printer.

In the conventional print head for impact printers, the wiring lead wires for each of the multiple coils for driving the print wire were twisted and connected to a part of the connector, which made the work extremely complicated. Therefore, wiring errors are likely to occur, and if the wiring lead wire becomes long, there is a risk of wire breakage.

The present invention is intended to solve the above-mentioned conventional drawbacks, and one embodiment thereof will be described below with reference to the drawings.

Fig. 1 shows the overall appearance of the print head. At 1, a mounting part 1a for attaching to the main body of the printer is formed, which serves as a reference body for mounting print head parts. 2 to the cover, 3 to the print base 1
The printing head is fixed to the mounting portion 1a with screws 4, and is integrally formed with a printing head nose that guides a plurality of printing wires 5 forming a printing dot matrix, and a connector protrusion 6a shown in FIG. 3 as a whole. It is a wiring board.

Next, each component of the print head will be explained in more detail with reference to FIGS. 2 and 3. A drive coil 8 for driving the printing wire 5 is inserted into a plurality of printing yoke 7.
a and a yoke member that integrally has a notched long hole 7b for wiring the coil 8 provided on both sides of the magnetic pole yoke into which the coil 8 is inserted, and 9σ is sandwiched between the printed wiring board 6 and the print head yoke member 7. an insulating rubber plate that insulates the two, 1
For tilted printing, insert the coil 8 into the Rad Yoke member 7 and connect it to the printed circuit board, and at the same time, insert and fix the print head yoke member 7 into the print head base 1, and at the same time, connect the print head base 1 and the print head yoke member 7. a yoke set screw for fixing the printed wiring board 6 in a state where it is held between the two;
1, a protruding wall 7C provided on the periphery of the print head yoke member 7;
The armature guide 12 fitted into the armature guide 11 is an armature whose one end is rotatable about the guide pin 111L of the armature guide 11. This armature 12 turns the signal current to the coil 8 on and off Accordingly, the armature is rotated in a direction approaching the yoke 71L against the armature torsion spring 13, and the printing wire 6 crimped to the end of the armature 12 is pushed out and moved to the outside of the tip of the nozzle 3 to print. It is supposed to be done. 14
There is an armature stopper 15 (4, which is a stopper for the cover 2).For example, there is a 6x7 dot matrix for printing, and in this case, the printing wire 6, armature 12, drive coil 8
etc., 36 wires 5 and related members are each strung up.

The present embodiment has the above configuration, and the wiring at the end of the winding of the drive coil 8 is connected to the notch of the yoke member 7 provided near the insertion position of the coil 8. After inserting it into the long hole Ab, insert it into the hole 6b of the printed wiring board 6 and insert the copper foil 6C.
All you have to do is solder and connect the wires, and the coil wiring work is completed by doing the same work for the number of dots.

Therefore, the wiring of the coil 8 can be shortened, and by sequentially filling the winding insertion holes 6b, there is no possibility of wiring mistakes, and the reliability is high against wire breakage and the like. In addition, since the printed wiring board 6 connector protrusion 6a is integrally formed, simply inserting it into the printer 16 of the printer body (not shown) will allow the connection between the head and the printer body. Electrical connections can also be made with one touch.

As described above, according to the present invention, a printing head with a simple configuration, excellent wiring workability, and high reliability can be obtained.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a print head in one embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a perspective view of a printed wiring board. DESCRIPTION OF SYMBOLS 1...Print head base, 5...Print wire, 6...Printed wiring board, 7...Print head yoke member, 8...Drive coil, 12... ...
...armature. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3

Claims (1)

[Claims] A plurality of printing wires constituting a dot matrix for printing, a plurality of armatures that actuate the printing wires to perform printing, a printing head yoke member installed close to the armature, and a rad yoke member for the printing. A plurality of drive coils attached to the 1. a printed wiring board fixed with an insulator between the print head base and the printed wiring board, which fixes the print head yoke member and has a print head nose attached to which guides the printing wire; A plurality of holes are provided in the printed wiring board, and the winding ends of the driving coil are inserted into the holes to connect the driving coil to the conductive foil of the printed wiring board, and the outer periphery of the printed wiring board is 1. A print head characterized in that a protruding piece is provided on a part of the print head, and the protruding piece is used as a connector for electrically connecting to a main body of a printer.