JPH0736374B2 - Winding method for electromagnetic devices - Google Patents

Description

The present invention relates to a winding method for an electromagnetic device such as a ballast for fluorescent lamps.

[Conventional technology]

Conventionally, as a bobbin of an electromagnetic device, as shown in FIG. 6, there is a bobbin 50 in which a terminal block 52 is integrally molded with a collar 51 and a pair of terminals 53 and 54 are provided at the ends thereof. To wind the coil around the bobbin 50, firstly wind the winding device 56 in the hollow portion 55 of the bobbin 50.
, And then as shown in FIG.
The starting end of the coil 58 is fixed to the terminal and is hooked on the protruding piece 64 of the one terminal 53 to temporarily fix it. Then, the winding device 56 is rotated,
After winding the coil 58 around the winding cylinder 59 of the bobbin 50, the terminal end of the coil 58 is hooked on the projecting piece 65 of the other terminal 54 and temporarily fixed. The main fixing of the coil 58 and the terminals 53, 54 is performed by an automatic welding machine in the next process. This series of operations can be automatically mechanized by automatically controlling the nozzle (not shown) holding the coil 58 and the winding device 56. That is,
Since there are no obstacles around the terminals 53 and 54 and around the terminal block 52, the nozzle holding the coil 58 can move freely, which is possible.

However, in order to save the labor of inserting the iron core into the hollow portion 55 of the bobbin 50, improve the coil occupancy rate, and reduce the size and weight, there is an example in which the bobbin 50 is integrally molded with the inner iron core 62. (Fig. 8). In this case, the iron core 62 is placed in the hollow portion of the bobbin 50.
Since the winding device 60 has already been inserted, the winding device 60 has four claws 61 for holding the portion of the iron core 62 protruding from the bobbin 50. Note that FIG. 9 shows a state in which the winding device 60 is mounted on the bobbin 50.

[Problems to be Solved by the Invention]

According to the example shown in FIGS. 8 and 9, when the bobbin 50 is held by the winding device 60, the winding device 6 is provided around the terminals 53 and 54.
Claw 61 of 0 approaches. Due to the protruding claw 61, there is no space for hooking the coil on the projecting pieces 64, 65 of the terminals 53, 54, and there is a problem that the automatic mechanization of the winding is hindered.

Therefore, an object of the present invention is to provide a winding method for an electromagnetic device, which enables smooth automatic mechanization of a winding even with a bobbin having an iron core fitted therein.

[Means for Solving the Problems]

The winding method of the electromagnetic device of the present invention comprises a bobbin formed by forming a terminal block having a pair of terminals in the form of a plate at one end of the winding cylinder, and an iron core integrally molded in the bobbin and installed in the winding cylinder. An electromagnetic device body in which a pin extending between the pair of terminals and extending at right angles to the cylinder center direction of the winding cylinder is provided on the terminal block, and a projecting piece is provided on each terminal in a direction substantially parallel to the pin and in the same direction as the pin. A method of winding using a winding device that is rotatable around the cylinder center of the winding drum and that has a claw capable of supporting the terminal block side end of the electromagnetic device body. Then, the main body of the electromagnetic device is supported, the coil start end is wound and fixed on the pin, and it is hooked on the protruding piece of one terminal and temporarily fixed, then the winding device is rotated and the coil is wound around the winding drum. After winding, hook the coil end on the protruding piece of the other terminal and temporarily fix it, then wind and fix it on the pin. After releasing the support of the bobbin and tilting the protruding piece to sandwich the start and end of the coil with the terminal, electrically connect the coil and the terminal, and fix the start and end of the coil between the pin and both terminals. It is characterized by cutting and removing the pin.

[Action]

According to the winding method of the electromagnetic device of the present invention, since the pins protruding substantially in the same direction as the projecting piece of the terminal are provided between both terminals of the terminal block of the bobbin, the bobbin has the iron core internally. Thus, even if the claw of the winding device supporting the main body of the electromagnetic device approaches the terminal block part of the bobbin, one end after winding and fixing the start end of the coil on the pin without being disturbed by the winding device. It can be temporarily fixed by hooking it on the protruding piece of the terminal, and further, by winding the coil around the bobbin winding barrel, hooking the end of the coil on the protruding piece of the other terminal and temporarily fixing it, and then winding and fixing it on the pin.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.

In FIG. 1, reference numeral 10 is a bobbin formed in a rectangular tube shape, a terminal block 11 is integrally molded at one end, and a pair of terminals 12 and 13 are provided on the end surface of the terminal block 11. The terminals 12 and 13 are formed with protruding pieces 14 and 15 that are cut and raised, and both terminals 12 and 13 are
Pins 16 are integrally molded and project from the outer peripheral surface of the terminal block 11 between the pins 13. Reference numeral 17 denotes an iron core, which is integrally molded when the bobbin 10 is molded. 18 is a winding device,
It has four claws 20 which are rotated by a rotary shaft 19 and hold each corner of the bobbin 10 on the side where the terminals 12 and 13 are arranged.

Next, the winding operation will be described. First, as shown in FIG. 2, the winding device 18 holds the end of the bobbin 10. Then, as shown in FIG. 3, the starting end of the coil 21 is wound around the pin 16 and fixed, and is hooked on the projecting piece 14 of the terminal 12 to temporarily fix it, and then the bobbin 10 is wound on the winding drum 22 (FIG. 2). The winding device 18 is guided, and the coil 21 is wound around the winding drum 22 by rotating the winding device 18. After the coil 21 is wound in this way, the terminal end of the coil 21 is hooked on the projecting piece 15 of the terminal 13 to be temporarily fixed, and the coil 21 is wound and fixed on the pin 16. After that, the holding of the bobbin 10 by the winding device 18 is released, the projecting pieces 14, 15 are tilted, and the coil 21 is welded and fixed to the terminals 12, 13 by an automatic welding machine. As a concrete fixing method of the coil 21, as shown in FIG. 4, the protruding pieces 14 and 15 are pushed down by pressing the electrodes 23 from above and below, and the coil 21 is sandwiched and mechanically fixed. Furthermore, an electric current is passed between the upper and lower electrodes 23, and the enamel coating of the coil 21 is burned off by the heat generated at this time, and the terminals 12, 1
Electrically connect to 3. As described above, the enamel film of the coil 21 is completely burned off by electrically connecting the protruding pieces 14 and 15 with the coil 21 sandwiched between them, so that sufficient electrical connection can be made. In this case, the coil 21
If it is wound one or more turns around 14,15 and the projecting pieces 14,15 are tilted and the coil 21 is sandwiched and connected in the same manner, the number of contacts between the coil 21 and the terminals 12,13 increases, so that the current is shunted. twenty one
The enamel coating of is not completely burned out and the welding becomes unstable and the electrical connection becomes insufficient. The electrical connection may be made by soldering or the like in a later process. Finally, as shown in FIG. 5, after cutting the starting end and the terminating end of the coil 21 between the pin 16 and both terminals 12 and 13, the pin 16 is cut and removed from the root.

According to the winding method of the electromagnetic device configured as described above, when the coil 21 is wound around the bobbin 10 in which the iron core 17 is fitted, the claw 20 of the winding device 18 may approach the outer periphery of the bobbin 10. However, the start end of the coil 21 is wound around and fixed to the pin 16 projecting on the outer periphery of the bobbin 10, and the projecting piece 14 of the terminal 12 is tentatively fixed, or the end of the coil 21 after winding is fixed. Terminal 13
It can be hooked on the protruding piece 15 and temporarily fixed and wound around the pin 16 to be fixed, and smooth automatic mechanization of the winding can be achieved without being disturbed by the protruding claw 20.

The terminal block 11 side of the electromagnetic device main body 32 is connected to the claw 20 of the winding device 18.
Since it is supported by the winding device 18, the claw 20 of the winding device 18 does not extend to the winding drum 22 portion, and the winding device 18 does not reduce the winding margin of the coil 21.
It is not necessary to design 22 long, and it is possible to avoid cost increase and size increase.

Further, the pin 16 can be used for fixing both the starting end and the terminating end of the coil 21, and labor can be saved.

Further, by cutting the pin 16 at the end, unnecessary portions at the start end and the end of the coil 21 can be removed quickly and reliably.

〔The invention's effect〕

According to the winding method of the electromagnetic device of the present invention, since the pins protruding substantially in the same direction as the projecting piece of the terminal are provided between both terminals of the terminal block of the bobbin, the bobbin has the iron core internally. Thus, even if the claw of the winding device supporting the main body of the electromagnetic device approaches the terminal block part of the bobbin, one end after winding and fixing the start end of the coil on the pin without being disturbed by the winding device. It can be temporarily fixed by hooking it on the protruding piece of the terminal, and then the coil can be wound around the bobbin winding drum, and the end of the coil can be hooked on the protruding piece of the other terminal and temporarily fixed and then wound and fixed on the pin. This has the effect of automating the winding process.

[Brief description of drawings]

1 is a perspective view of an embodiment of the present invention, FIG. 2 is also a perspective view thereof, FIG. 3 is a partial perspective view thereof, FIG. 4 is a partial sectional view thereof, and FIG. 5 is a partial perspective view thereof. 6 is a perspective view of a conventional example, FIG. 7 is also a perspective view thereof, FIG. 8 is a perspective view of another conventional example, and FIG. 9 is also a perspective view thereof. 10 …… bobbin, 11 …… terminal block, 12,13 …… terminal, 14,15
...... Projection piece, 16 ...... pin, 17 ...... iron core, 18 …… winding device, 20 …… claw, 21 …… coil, 22 …… winding cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akitoshi Ogawa 404-1 Nishinobu Suise, Himeji-shi, Hyogo Prefecture Ikeda Electric Co., Ltd. (56) References JP-A-60-72210 (JP, A) JP-A-63-34910 (JP, A) Jikkou 55-13929 (JP, Y2)

Claims (1)

[Claims] 1. A pair of plate-shaped terminals (1
Bobbin (1) formed by forming a terminal block (11) having 2,13)
0) and the bobbin (10) integrally molded with the winding drum (2
2) which comprises an iron core (17) installed inside, and is located between the pair of terminals (12, 13) and is mounted on the terminal block (11) by the winding drum (2).
Pins (16) extending at right angles to the tube center direction of 2) are projected, and the terminals (12, 13) are projected substantially in parallel with the pins (16) in the same direction as the pins (16). The electromagnetic device body (32) provided with protruding pieces (14, 15) has a claw (20) capable of supporting an end of the electromagnetic device body (32) on the terminal block (11) side. A winding method for an electromagnetic device, wherein winding is performed using a winding device (18) rotatable around a cylinder center of (22), wherein the claw (20) of the winding device (18) comprises: The electromagnetic device main body (32) is supported, the coil start end is wound around the pin (16) and fixed, hooked on the projecting piece (14) of one terminal (12) and temporarily fixed, and then the winding device. (18) is rotated to wind the coil (21) around the winding cylinder (22), and after the coil is wound, the coil end is hooked on the projecting piece (15) of the other terminal (13) and temporarily fixed. After said pin (16)
The bobbin (10) is unsupported by the winding device (18), the projecting pieces (14, 15) are laid down, and the terminals (12, 13) and the coil (21) are fixed. ), The coil (21) and the terminals (12, 13) are electrically connected to each other, and the pin (16) and the terminals (12, 13) are electrically connected to each other.
A winding method for an electromagnetic device, which comprises cutting the starting end and the terminating end of the coil (21) and cutting and removing the pin (16).