JPH06333752A - Winding method for coil and induction electro-magnetic apparatus - Google Patents

Abstract

PURPOSE:To improve efficiency in manufacturing, by eliminating a step, in which outgoing parts of coils provided around two bobbins are connected. CONSTITUTION:A first bobbin 2A having a projected binding part 24A for a first winding and a second bobbin 2B having a projected binding part 24B for a second winding are mounted in series on a rotary shaft 40 in a winding machine 4. A top of a copper wire 3 is bound on a first terminal pin 25A. While the rotary shaft 40 is rotated, a nozzle 42 for drawing out the copper wire 3 is moved in an axial direction (X) and a diametrical direction (Y) of the rotary shaft 40 so that the copper wire 3 is turned around the first bobbin 2A. Then, an outgoing part 33 is bound around the projected binding part 24A used for the first winding, and after the copper wire 3 is bound on the projected binding part 24B used for the secondary winding, the copper wire 3 is turned around the second bobbin 2b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reactor, a high frequency choke, an induction electromagnetic device such as a transformer, and a coil winding method.

[0002]

2. Description of the Related Art Conventionally, in an inner iron type reactor in which a two-leg type core is inserted into two bobbins, each bobbin is individually wound, and then both coils are wound. The lead-out portions of No. 2 are connected to each other by soldering, or the lead-out portions of both coils are connected to the printed circuit board to connect both lead-out portions to each other. Therefore, a step of connecting the lead-out portions of both coils to each other is required, and since this connecting step is difficult to automate, manufacturability is poor.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a coil winding method and an induction electromagnetic device which do not require a step of connecting the lead-out portions of the coils of two bobbins. To do.

[0004]

In order to achieve the above object, the method of the present invention first comprises a first bobbin having a barb protrusion for the first winding and a second bobbin barb having a protrusion for the second winding. Two
Prepare a bobbin and mount them on the rotary shaft of the winding machine. After the mounting, the rotary shaft is rotated, and the nozzle for drawing out the copper wire is moved in the axial direction and the radial direction of the rotary shaft to wind the copper wire around the first bobbin, and then the pull-out portion thereof. To the protrusion for the first winding,
Subsequently, the copper wire is twisted on the second winding twisting protrusion and then wound on the second bobbin.

In the induction magnet of the present invention, first, the first bobbin wound with the first coil is provided with the protrusion for the first winding, and the second bobbin wound with the second coil is wound with the second winding. A line barb projection is provided. The first and second lead-out portions of the first and second coils respectively correspond to the first and second
And the first coil and the second coil, which are entangled in the protrusion for entanglement of the second winding, and the first coil and the second coil are connected to each other through the two lead portions.
It consists of a continuous copper wire.

[0006]

According to the present invention, since the first and second winding stripping protrusions are provided on the first and second bobbins, respectively,
Since the protrusions of both coils can be entwined with these protrusions, the two coils can be continuously wound with one copper wire.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, this induction porcelain comprises a pair of core divided bodies 1A and 1B and first and second bobbins 2A and 2B.
B and the first and second coils 3A and 3B.

The first and second bobbins 2A and 2B have through holes 21 for inserting cores into which the pair of middle legs 11 of the core divided bodies 1A and 1B are inserted. Each bobbin 2A, 2B
A pair of winding barb protrusions 24A, 24B and terminal pins 25A, 2 are respectively provided on the upper collar portion 22 and the lower collar portion 23.
Have 5B. The first and second bobbins 2A, 2
B has the same shape, and as shown in FIG.
2 and the lower brim portion 23 are provided with an engaging convex portion 26 and an engaging concave portion 27, respectively. One bobbin 2A, 2
The engagement protrusion 26 of B is fitted into the engagement recess 27 of the other bobbin 2B, 2A to position the two bobbins 2A, 2B relative to each other. In addition, both bobbins 2A, 2B,
As shown in FIG. 3B, a copper wire guiding protrusion 28 and a groove 29 are formed near the terminal pins 25A and 25B.

In the first coil 3A wound around the first bobbin 2A of FIG. 1, the winding start end 31 is the first terminal pin 25A.
The second coil 3B wound around the second bobbin 2B has its winding end portion 32 twisted around and soldered to the second terminal pin 25B. The first lead-out portion 33 of the first coil 3A, that is, the winding end portion, is bound to the first winding plucking protrusion 24A, while the second lead-out portion 34 of the second coil 3B, that is, the end portion. The winding start end is twisted by the second winding twisting protrusion 24B. The two coils 3A and 3B are composed of one continuous copper wire via the both lead-out portions 33 and 34. This induction electromagnetic device is a reactor, and as shown in FIG. 3 (c), both coils 3A and 3B are wound so as to generate reactances of the same polarity.

Next, a method of manufacturing the reactor will be described. First, the mounting jig 41 is inserted and mounted on the rotary shaft 40 of the winding machine 4 of FIG. Subsequently, the through holes 21 (FIG. 1) of the first and second bobbins 2A and 2B are passed through the mounting jig 41 so that both bobbins 2A and 2B are rotated.
0 in series. At this time, a pair of upper flange portions 2 provided with winding barb protrusions 24A, 24B of both bobbins 2A, 2B.
In a state in which 2 and 22 are opposed to each other, both bobbins 2A and 2A
Wear B.

After this mounting, the copper wire 3 is pulled out from the nozzle 42 mounted on the XY table (not shown) to
The tip of the copper wire 3 is twisted to the terminal pin 25A of the bobbin 2A. The nozzle 42 guides the copper wire 3 while moving in the axial direction X and the radial direction Y of the rotary shaft 40 by a drive motor (not shown). After the copper wire 3 is twisted, the control device rotates the rotary shaft 40 in the forward and reverse directions and stops it according to the program stored in the microcomputer, and moves the nozzle 42 in the axial direction X and the radial direction Y of the rotary shaft 40. Then, the copper wire 3 is wound as follows.

That is, the first bobbin 2 shown in FIG.
The copper wire 3 entangled in the terminal pin 25A of A is wired along the projection 28 and the groove 29 for guiding the copper wire, and then the first wire
The first coil 3A is formed by winding the bobbin 2A around the body 2a in the left-hand screw direction. Following the formation of the first coil 3A, the lead-out portion 33 is knotted around the two first winding knotting protrusions 24A, 24A, and the copper wire 3
Of the second bobbin 2B after the copper wire 3 is wound around the body portion 2b of the second bobbin 2B in the left-hand screw direction. Wired along the groove 29 and the protrusion 28 for guiding the copper wire, and finally,
It is entangled in the second terminal pin 25B. Then nozzle 4
2 cuts the unwinding end of the copper wire 2 and returns to the origin position P1. This ends the series of programmed operations.

After returning to the origin, the operator removes the pair of bobbins 2B and 2A from the mounting jig 41, and then, as shown in FIG.
As indicated by an arrow A in (c), the second bobbin 2B is rotated around the first bobbin 2A, and the engaging convex portion 26 and the engaging concave portion 27 of FIG.
Position 2B with respect to each other. After this positioning, the middle leg 11 of the pair of core divided bodies 1A and 1B is attached to both bobbins 2A and 2B.
It is inserted into the through hole 21 of. Thereafter, the core split bodies 1A and 1B are attached to the bobbin 2 by a caulking cover (not shown).
The reactor is manufactured by fixing to A and 2B.

As described above, in this reactor, the copper wire 3 is continuously wound around the two bobbins 2A and 2B, so that the step of connecting the coils 3A and 3B to each other is not necessary. Therefore, the manufacturability is improved.

In the above embodiment, the case where the induction electromagnetic device is a reactor has been described, but the present invention can be applied to other induction electromagnetic devices such as a high frequency choke and a transformer having a ferrite core. In that case, the winding directions of the two coils may be determined according to the required polarities.

In the above embodiment, one bobbin 2A is used.
In (2B), winding protrusions 24A (24
Although two B) are provided, in the present invention, the number of the protrusions 24A and 24B for stripping each winding may be one each.

[0017]

As described above, according to the present invention, since the protrusions for winding winding are provided on the first and second bobbins, both coils can be formed by one continuous copper wire. . Therefore, it is not necessary to connect the lead-out portions between the coils to each other, which improves the manufacturability.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a reactor showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of first and second bobbins.

FIG. 3 is a process drawing showing a method of winding a coil.

[Explanation of symbols]

2A ... 1st bobbin, 2B ... 2nd bobbin, 24A ... 1st winding bald protrusion, 24B ... 2nd winding bald protrusion, 3 ...
Copper wire, 3A ... 1st coil, 3B ... 2nd coil, 33, 3
4 ... Drawing-out part, 4 ... Winding machine, 40 ... Rotating shaft, 42 ... Nozzle, X ... Axial direction, Y ... Radial direction.

Claims (2)

[Claims] 1. A first bobbin having a protrusion for stripping the first winding and a second bobbin having a protrusion for stripping the second winding.
The copper wire is wound around the first bobbin by being mounted on the rotary shaft of the winding machine, rotating the rotary shaft, and moving the nozzle for guiding the copper wire in the axial direction and the radial direction of the rotary shaft. After being turned, the lead-out portion is twisted on the first winding plucking projection, and then the copper wire is twisted on the second winding plucking projection and then wound on the second bobbin. How to wind a coil. 2. A first bobbin around which a first coil is wound
The winding winding protrusion is provided, and the second bobbin winding protrusion is provided on the second bobbin around which the second coil is wound.
The first and second lead-out portions of the second coil and the second coil are bound to the first and second winding plucking protrusions, respectively, and the first coil and the second coil are the both lead-out portions. Induction porcelain composed of one continuous copper wire via.