JPH0311533B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to electromagnetic equipment, and relates to the structure of a terminal block portion that connects a primary coil and a secondary coil to each other in, for example, a ballast for a discharge lamp.

[Technical background of the invention]

A structure for facilitating automatic assembly of a ballast for an electromagnetic device, such as a discharge lamp, allows the ballast to be attached to the main body of the device without impairing the wiring workability of the lighting device, and also facilitates automatic assembly of the ballast. A structure is required that can maintain high quality while reducing manufacturing precision during assembly.

As for the structure of the ballast, which facilitates the wiring work as a lighting device, connection terminals are arranged at both ends of the ballast to facilitate the wiring work of the lead wires in response to the slimmer body of the device. This can be achieved using the conventionally known Kochi structure.

Next, the primary coil and secondary coil are attached to the iron core, and the coil bobbin is structured to connect the primary and secondary coils and position each coil with respect to the iron core, thereby automatically reducing assembly man-hours. This can be considered as one way to make assembly easier.

For this reason, a ballast structure as shown in FIG. 1 has been proposed. In the ballast shown in FIG. 1, a bobbin 2 around which a primary coil 1 is wound and a bobbin 4 around which a secondary coil 3 is wound are inserted into an I-shaped iron core 5, and the opposing surfaces of both bobbins 2 and 4 are inserted into an I-shaped iron core 5. Terminal block parts 8 and 9 provided with terminals 6 and 7 for connecting respective lead wires are provided so as to protrude to one side, and by connecting both terminals 6 and 7, the primary coil 1 and the secondary coil are connected. Next coil 3
electrical connection between the coils 1 and 3, eliminating the crossover wire between the coils 1 and 3, and fitting the E-type iron cores 10 and 11 from both sides of the coils 1 and 3 so that the coils 1 and 3 can be positioned. It has a structure that facilitates automatic assembly.

However, in the structure shown in FIG.
As shown in FIG. The width a and the inner diameter dimension b of the bobbins 2 and 4 are the insertion allowance dimensions, and a<
If the relationship b is established, and therefore the bobbins 2 and 4 are extremely deviated to opposite sides with respect to the I-shaped core 5, the terminal block parts 8 and 9 will abut, and the coils 1 and 3 will not be able to be inserted. It becomes complete and becomes an obstacle during assembly.

For this reason, a structure can be considered in which the width of the terminal block parts 8 and 9 is reduced to form a gap between both the terminal block parts 8 and 9, or a structure in which the height positions of the terminal block parts 8 and 9 are changed from each other so that they protrude. However, the electrical connection between the terminals 6 and 7 is poor due to the gap between the terminal block parts 8 and 9, and the mechanical strength of the connection is poor, resulting in poor connectivity.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned drawbacks, and facilitates automated assembly, reduces manufacturing precision during assembly, and
It provides high quality ballast.

[Summary of the invention]

The present invention is a device in which the terminal block parts of the coil bobbin attached to the iron core do not collide with each other, and the terminal block parts have mutual correction functions, and the bobbin around which the primary coil winding is wound and the secondary coil winding The main body of the electromagnetic device is constructed by attaching a pair of bobbins wound with a bobbin to an iron core, and a terminal block portion is provided on opposing surfaces of the pair of bobbins, respectively, with terminals for connecting lead wires of the windings. The edges of the two terminal block portions that are connected to each other are formed as inclined edges, and the terminals between the two coils attached to the iron core are connected to each other.

[Embodiments of the invention]

Next, the configuration of an embodiment of the present invention will be explained with reference to FIGS. 4 to 6.

21 and 22 are molded bobbins, and terminals 26 are provided on the terminal block portion 25 provided on the outer surface of one collar portion 24 of the bobbin 21 around which the winding of the primary coil 23 is wound.
A winding start lead wire of the primary coil 23 wound around the bobbin 21 is connected and fixed to this terminal 26. Further, a terminal block 28 protruding toward one side from the outer surface of the other flange 27 of the bobbin 21 is provided with a terminal 30 for connecting the winding end lead wire of the primary coil 23.

In addition, a terminal block portion 33 provided on the outer surface of one collar portion 32 of the bobbin 22 on which the winding wire of the other secondary coil 31 is wound is provided with a winding end drawer for the secondary coil 31 wound on the bobbin 22. Terminals 34 are provided for connecting wires. Further, a terminal block portion 3 is provided on the outer surface of the other flange portion 35 of this bobbin 22 so as to protrude to one side.
6 is provided with a terminal 37 for connecting the winding start lead wire of the secondary coil 31.

The terminal block portions 28 and 36 protrude from the outer surfaces of the opposing flanges 27 and 35 of both bobbins 21 and 22 and are biased toward one side. The edges of the terminal block portions 28 and 36 that join each other narrow toward the tip side. They are formed into tapered inclined edges 38, 39.

Next, 40 is an I-shaped iron core which is connected to the pair of bobbins 21,
22, and an E-shaped core (not shown) is fitted from both sides of the bobbins 21, 22 to form a leakage transformer type electromagnetic device main body 41. Both bobbins 21 and 22 are positioned and held by the E-shaped iron core, and the distance between opposing flanges 27 and 35 of both bobbins 21 and 22 is maintained constant at the central leaking leg.

The core width a of the I-shaped core 40 is equal to the width of the bobbin 2.
The relationship between the inner diameter dimensions b of Nos. 1 and 22 is such that a<b, ba=2c, so that there is an allowance c on both sides of the core 40 due to the insertion allowance.

The width e of the inclined portions of the inclined edges 38 and 39 of the opposing terminal block portions 28 and 36 of the bobbins 21 and 22 is the margin dimension (2c The relationship e≧2c=d is established so that the length is approximately equal to or longer than d).

Next, the operation of this embodiment will be explained.

A pair of bobbins 21 and 22 have an I that becomes the central leg iron core.
It penetrates the shaped iron core 40. At this time, bobbins 21, 2
2 are extremely deviated to opposite sides as shown in FIG. Because the inclined edges 38 and 39 are joined to each other and the terminal block parts 28 and 3 are inserted while being corrected in position, the terminal blocks 28 and 3 do not collide with each other.
6 never hits. Then, E-shaped iron cores (not shown) are fitted from both sides of the bobbins 21 and 22, and both bobbins 21 and 22 are positioned by the central leakage leg and the side legs, respectively. The electromagnetic device main body 41 is configured by connecting both terminals 30 and 37 of both adjacent terminal block sections 28 and 36.

In order to connect this main body 41 to the lighting circuit shown in FIG.
2 is connected, and the terminal block part 2 has the inclined edges 38 and 39 joined to each other at both ends of the bobbin 21 of the primary coil 23.
An AC power source is connected to terminals 30 and 37 of 8 and 36.

Next, the structure of another embodiment will be explained with reference to FIGS. 7 to 9.

In the embodiment, the terminal block parts 28 and 36 are connected to each other between the bobbin 21 around which the winding of the primary coil 23 is wound and the bobbin 22 around which the winding of the secondary coil 31 is wound.
The structure has been described with one side edge being inclined edges 38 and 39, but in this embodiment, one bobbin, for example, the bobbin 21 around which the winding of the primary coil 23 is wound, has both side edges of the terminal block portion 28 facing each other toward the tip side. Tapered edges 38, 38 are inclined in the narrowing direction, and the other bobbin, for example, the bobbin 22 around which the winding of the secondary coil 31 is wound, has the terminal block part of the one bobbin 21 at the tip edge of the terminal block part 36. Tapered inclined edge 3 with both side edges widened to the tip so that 28 can be fitted.
9 and 39 are formed.

Terminal block portions 28 of these bobbins 21 and 22,
As described above, the width e of the inclined portions of the inclined edges 38, 38, 39, 39 of 36 is related to the core width a of the I-shaped core 40 and the inner diameter b of the bobbins 21, 22 as in the previous embodiment, b- a=2c, e≧2c.

The other structure of the electromagnetic device main body 41 is the same as that of the embodiment described above.

In the configuration of this embodiment, both bobbins 21 and 22 are
When attached to the shaped iron core 40, the inclined edges 38, 38 on both sides of one terminal block section 28 are joined and aligned with the inclined edges 39, 39 on both sides of the fitting recess 43 of the other terminal block section 36, and both terminal blocks are aligned. The parts 28, 36 are engaged without abutting each other.

In the above embodiment, the inclined edges 3 of the terminal block portions 28 and 36 of the pair of bobbins 21 and 22 are connected to each other.
Arcuate portions 44, 44 are formed at the tips of 9, 39 to facilitate joining.

Further, as shown in FIG. 10, a pair of terminals are attached to the terminal block portion 25 on the outer surface of one collar portion 24 on the opposite side to the surface where both bobbins 21 and 22 of the bobbin 21 around which the winding of the primary coil 23 is wound are opposed. 26 and 45 are provided, and the winding start lead wire of the primary coil 23 and the winding end lead wire of the primary coil 23 are connected to these terminals 26 and 45, respectively, and the terminal 45 to which the winding end lead wire is connected is connected to the other end of the bobbin 21. Terminal block portion 28 protruding from the flange portion 27
The wiring work as a lighting device for the electromagnetic device main body 41 is performed by connecting the terminal 30 of the electromagnetic device main body 41 with the connecting wire 46.
Wiring workability can be improved by making it possible to do this at the terminal block parts 25 and 33 at both ends of the wiring board.

〔Effect of the invention〕

According to the present invention, the lead wires of the respective windings are connected to the surfaces of the bobbin around which the primary coil winding is wound and the bobbin around which the secondary coil winding is wound, which are attached to the iron core and face each other. Since the edges that connect the terminal block parts with the terminals to each other are formed into slanted edges, even if the inner diameter of the bobbin has a generous insertion allowance compared to the core width, the bobbin will not touch each other when attached to the core. The inclined edges are joined and the position is corrected, allowing the bobbin to be easily and reliably attached to the core without the two terminal block sections hitting each other, and the terminal block sections coming into close contact with each other to ensure a secure connection between the terminals. Manufacturing precision during assembly can be reduced,
It facilitates the automatic assembly of various electromagnetic devices such as high-quality discharge lamp ballasts.

In addition, by deviating the opposing terminal block portions of a pair of bobbins to one side and engaging the inclined edges on one side, the bobbin around which the windings of the primary coil and secondary coil are wound can be adjusted. They can have the same shape.

In addition, by forming one side edge of the opposing terminal block portions of the pair of bobbins into an inclined edge that joins the opposite side inclined edges of the other fitting recess, it is possible to prevent the bobbin attached to the iron core from rattling and shifting. It can prevent vibration.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conventional electromagnetic device, Fig. 2 is an exploded plan view of the same as above, Fig. 3 is a plan view showing the assembly process of the same as above, and Figs. 6 is an exploded plan view of the same as above; FIG. 7 is a plan view of another embodiment showing the assembly process of electromagnetic equipment; FIG. 8 is a plan view of the assembled state of the same; 9 is an exploded plan view of the same as the above, FIG. 10 is a plan view of an electromagnetic device showing another embodiment, and FIG. 11 is a lighting circuit diagram. 21, 22...Bobbin, 23...Primary coil,
28, 36... terminal block section, 30, 37... terminal,
31... Secondary coil, 38, 39... Inclined edge, 4
3...Fitting recess.

Claims (1)

[Claims] 1. An electromagnetic device body is constructed by mounting a pair of bobbins on an iron core, including a bobbin around which a primary coil winding is wound and a bobbin around which a secondary coil winding is wound,
Terminal block portions provided with terminals for connecting the lead wires of the respective windings are provided on opposing surfaces of the pair of bobbins, respectively, and the edges of the terminal block portions that are joined to each other are formed into inclined edges. An electromagnetic device characterized by: 2. The terminal block portions protruding from the pair of bobbins are mutually offset to one side, and one side edge of the terminal block portions that join to each other is formed as an inclined edge. Electromagnetic equipment listed. 3. One of the terminal block portions protruding from the pair of bobbins is characterized in that one of the terminal block portions has both side edges formed into an inclined edge with a narrowed tip side, and the other side edge is a fitting recessed portion having a sloped edge with a widened tip side. An electromagnetic device according to claim 1.