JPS60216747A - Shape of coil end and coiling method - Google Patents

Abstract

PURPOSE:To automate the end processing of a coil by winding a cylindrical coil on a bobbin by a winding machine of a flier and an index, and laminating fixedly on a circuit board. CONSTITUTION:A flier 6 is traversed with a rotor 7 to wind a wire 1 on a bobbin while the bobbin is temporarily stopped at the position 12-1 of an indexing unit 10 divided by six. Then, the wire 1 is extended in a spider web shape like A, B lines at the position 12-2 so that the angle of the A, B lines becomes 120 deg.. A bonding agent 15' is coated on the vicinity of the crossing point 15, and thermally solidified at the position 12-3. The wire 1 is cut at two positions by a cutter 18 through the positions 12-4 and 12-5, and the bobbin is removed. A coil unit 22 restricted at the ends (a) and (b) by coiling is laminated fixedly on a circuit board 20, and the extensions of the ends (a) and (b) are connected by soldering on a pad 21 near the intermediate.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic transducer used in watches and the like. Clocks are generally made by dividing the frequency of a crystal oscillation and guiding it into a coil, where it is converted into magnetism, which turns a magnetic rotor. The coil is generally cylindrical and belongs to the type of coil. Furthermore, the coil unit consisting of a coil and a coil belongs to a type that is fixed to a circuit board on which an IC is mounted. The present invention streamlines the positioning of the two terminals on the coiling wheel. In the past, the terminals were completely free, so it required manpower to align them with the connection pads on the circuit board.

The present invention utilizes Lee Dekme Savings! , the gist is located where it is located. The present invention will be explained using the drawings.

FIG. 1 shows a block diagram in which the present invention is incorporated into a flyer index. 1 is a conductor, 2 is a stock, 3 is a tension device, 4 is a motor, and 5 is a transmission device. 6 performs rotation 7 and traverse 8 in the flyer. 9 is a bearing. On the other hand, 1o is an Intex device and shows the case of 6 divisions. 1] indicates an index angle of 600. 12-1 is the position of the bobbin inserted into the coiling stage. While the bobbin is temporarily stopped at this position, the flyer 6 rotates 7 and traverses 8 so that the conductor 1 is wound around the bobbin. Arrow I3 indicates the direction in which the conductor 1 is fed. The winding start and winding end are both located at the end 14 of the coil on the index center side. When coiling is finished, the flyer 6 is stopped, and during that time the indexing device 1
0 is I-indexed and the bobbin is at position 12-2. At the same time, another bobbin at 12-6 comes to 12-1. The bobbin that has arrived at 12-■ is coiled. 12-
In the 2nd position, the conductor] is stretched like a spider's web like the A line and the B line.

This tensioning force is obtained by a tensioning device 3.

Line A and line B intersect at point 15. The A line and the B line are symmetrical with respect to the coil axis 16. The angle between line A and Bm is 12
It is the value obtained by subtracting 60° of the index angle from 1800 at 0°. Adhesive peels off near intersection 15. Reference numeral 15' indicates the adhesive; by the ninth indexing operation, the bobbin comes to the position 12-3, where the adhesive 15> is heated and solidified. The bobbin is carried to 12-4 and 12-5. 1
8. Use a cutter to cut the conductor wire] in two places near the bobbin. At position 12-5, winding of the coil is completed and the bobbin is taken out. The terminal ab of the processed wire 1 in the taken-out state 12-7 intersects from the cylindrical end of the coil and is accurately extended symmetrically to the coil axis 16 with an opening angle of 120°. The jig 17 that remains after the bobbin has been taken out moves to the next insertion stage. A new bobbin is inserted here.

19 indicates the direction of bobbin insertion, and 19' indicates the direction of bobbin removal.

FIG. 2 is an assembled view according to the present invention, and (a) is a plan view, and (b) is a sectional view. 20 is a circuit board on which a pattern is wired. 21 is a connection node ζ for the coil. The coil unit 22, which has been coiled and whose terminals are regulated, is stacked and fixed on the substrate 20. 23 is a pin for caulking. The coil unit 22 may be fitted into the board 20 from the side. terminal a of the coil unit,
Since the bid coil unit 22 is positioned relative to the base plate 20 and the coil unit 22 is positioned on the substrate 20, the extended portions of the terminals a and b pass over the pad 21 near the middle thereof so as to overlap.

If there is less distraction, the ends will overlap the band 21.

Alternatively, the terminals a and b may be slightly shifted using a jig (not shown) to improve accuracy. The extending portions are aligned in this way and connected to the pads 21 by soldering, ultrasonic waves, or the like. 24
indicates the solder build-up. Further improvements will be made. 25 is a spacer integrated with the bobbin, which prevents the terminal from being deformed during transportation. Reference numeral 26 indicates a hole made in the spacer, and is located at approximately the same position as the hole 21 on the board. 27 is a groove, and the conducting wire 1 is automatically fitted into the groove 27 according to the index of the fryer. (See Figure 1). If the A line and the B line are formed correctly mechanically, it can be assumed that the lines enter the groove 27. Returning to FIG. 2, the installation work is performed while the ends of terminals a and b remain in the grooves 27. This will prevent the device from deforming.

Connection work such as soldering is performed through the hole 26.

The invention described above has made it possible to automate the processing of coil terminals without requiring human labor.

[Brief explanation of the drawing]

FIG. 1 is a block diagram in which a flyer index is incorporated into the present invention, and FIG. 2 is an assembled diagram according to the present invention, in which (a) is a plan view and (b) is a sectional view. DESCRIPTION OF SYMBOLS 1... Conductor, 6... Flyer, 10 Index device, 11... Angle, 14... End of coil, 11
... intersection, 16 ... axis-line, 20 ... circuit board,
21... Connection pad, 22... Coil unit, a
, b.Terminal. Patent applicant: Fuji Keiki Co., Ltd.

Claims (2)

[Claims] (1) In electromagnetic transducers used in watches, etc., the coil unit is formed by winding a cylindrical coil around a bobbin using a flyer and index winding machine, and this coil unit is laminated on a circuit board and fixed. The 21 conductive wire ends of the coiling upper shell cross from the cylindrical end of the coil and extend symmetrically with respect to the coil axis, and the coil unit is layered on the circuit board. When the extension part overlaps with the connection pad on the circuit board, or is slightly restricted so that it overlaps, and the two conductor terminals maintain the spider web-like trajectory formed by the index, 18
The shape of the coil terminal is characterized by an opening angle obtained by subtracting the index angle from 0°. (2) In the method of coiling a cylindrical coil using a flyer and an index, the conductors at the beginning and end of winding 9 are located at the ends of the coil facing the center of the index and cross each other to form a spider web-like polygonal wire. A coiling method characterized by forming a shape and maintaining the remaining terminal after cutting the conductor along a locus based on the polygonal shape.