JPH11186075A - Electric-discharge lamp stabilizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electric-discharge lamp stabilizer which is capable of improving reliability of connecting between a wiring and a terminal metallic part, and to improve quality. SOLUTION: This electric-discharge lamp stabilizer has a plurality of filament wirings 37 to 39 and primary or secondary coil wirings 35, 36 for holding them therebetween. In the stabilizer, a filament wiring is wound individually on a plurality of filament wiring section parts provided to a longitudinal central part of a coil bobbin 34, wherein a plurality of terminal metallic parts 66 to 72, 73 to 79 are fixed to terminal stands 59, 60 of both end parts, respectively. One wiring alone is entwined individually for each of the terminal metallic parts 66 to 72, 74, 76, 78, 79, which are necessary for winding each of the wirings of each terminal metallic part. The necessary terminal metallic parts and a wiring which has been entwined only singly to each thereof are electrically and mechanically connected by fusing connection without soldering.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil bobbin having a plurality of filament windings wound around a center portion of a coil bobbin, and a primary side winding and a secondary side winding wound on both sides thereof. The present invention relates to a discharge lamp stabilizer used for a lighting device of a fluorescent lamp lighting fixture and the like.

[0002]

2. Description of the Related Art As shown in FIG. 13, a coil for a plurality of filament windings adjacent to each other at a longitudinal center portion of a coil bobbin 1 is included in a coil of a discharge lamp ballast provided in a fluorescent lamp lighting apparatus for two lamps. It is known that sections 2 to 4 are provided, and sections 5 and 6 for coil winding are provided on both sides. Filament windings 7 to 9 are individually wound around the sections 2 to 4, and
, A secondary coil winding (S coil) 11 is wound around the section 6, respectively, and terminal portions of these windings 7 to 11 are wound. Are connected to predetermined terminal fittings among a plurality of terminal fittings 17a to 17l respectively attached to the terminal blocks at both ends in the longitudinal direction of the coil bobbin 1. Moreover, conventionally, the two crossover wires 12 and 13 are formed by each of the already wound filament windings 7 to 9 and both coil windings 10 and 11.
Are wired across predetermined terminal fittings respectively attached to both ends of the coil bobbin 1 in the longitudinal direction.

FIG. 14 is a circuit diagram showing a wiring structure of a discharge lamp ballast having a coil having such a configuration.
In this figure, 14 is a starting capacitor provided by connecting terminal fittings 17c and 17f, and 15 is terminal fittings 17i and 17f.
A phase-advancing capacitor provided by connecting j, and a noise preventing capacitor 16 provided by connecting terminal fittings 17g and 17l. The terminal fittings 17e and 17f are electrically connected in common to one of a pair of filaments of each of the two fluorescent lamps, and are connected to the terminal fittings 17g and 17f.
h is electrically connected to the other filament of one fluorescent lamp, and similarly, the terminal fittings 17k and 17l are connected to the other filament.
The fluorescent lamp is electrically connected to the other filament of the book. The crossover wire 12 is a terminal connected to a terminal 17b connected to the primary coil winding 10 and a terminal 17j connected to the secondary coil winding 11 via a phase advance capacitor 15. A crossover wiring is provided between the bracket 17i and the other crossover 13
Is wired over the terminal fitting 17d and the terminal fitting 17k.

As described above, the filament windings 7 to 9 are wound around the center of the coil bobbin 1 in the longitudinal direction.
In the case where the coil windings 10 and 11 are wound on both sides, respectively, if the center filament winding 8 is first wound and connected to predetermined terminal fittings, the winding portions reaching these terminal fittings become obstructive. Therefore, the filament windings 7 and 9 and the coil windings 10 or 11 that have not yet been wound cannot be wound around the coil bobbin 1.

Therefore, conventionally, as the order of windings, first, windings other than the filament windings 7 to 9, that is, primary and secondary coil windings 10, 11 are wound around predetermined section portions 5, 6, respectively. After these windings 10, 11
Are wound around the predetermined section portions 2 and 4, respectively, and then the middle filament winding 8 is wound around the predetermined section portion 3, and finally, The terminal fittings 17b and 17i and the terminal fittings 17d and 17k on the coil winding 10 side and the secondary coil winding 11 side are individually connected by crossover wires 12 and 13. The coil thus configured is shown in FIG. 13, and the configuration is as described above.
Wires having different diameters are used for the respective windings 7 to 11 according to their functions.

[0006]

As described above, the winding wires 12 and 13 are laid across the upper ends of the windings 7 to 11 wound around the coil bobbin 1 so as to extend between terminal fittings at both ends in the longitudinal direction of the coil bobbin 1. In a conventional discharge lamp ballast in which a wire structure is required, some of the terminal fittings to which the connecting wires 12 and 13 are connected include the connecting wire 12 or 13 and the primary or secondary coil. The windings 10 or 11 are respectively entangled.

As described above, some of the terminal fittings 17b, 17
While two windings are connected to d, 17k, etc.,
In the configuration where one winding is connected to the other terminal fittings, the terminal fitting and the winding entangled therewith must be electrically connected by a connection method that does not require soldering such as fusing connection. Was difficult.

That is, the so-called fusing connection is
With the winding entangled piece cut and raised from the terminal fitting and entangled with the winding folded down along the terminal fitting, the portion where this winding entanglement is located is sandwiched between the top and bottom electrodes and By applying a current to the electrode rod under this pressure, the windings and the like tied to the winding ties are heated by resistance, and the insulating coating is melted to electrically and mechanically connect the terminal fittings and the windings. This is a typical example of a solderless connection to be connected to.

However, when such a fusing connection is performed, a winding entangled piece in which one winding is entangled and a winding entangled piece in which two windings are entangled. Since the manner in which the entangled pieces fall and the amount of entangled windings (and thus the heat capacity) are different, proper fusing connection cannot be performed under the same conditions. In particular, when the wire diameters of the two windings entangled with the same terminal fitting are different, the reliability of the fusing connection to the thinner winding is reduced, and insufficient melting of the insulation coating or the There is a high possibility that poor electrical conduction or poor mechanical connection due to insufficient pressurization will occur.

Under such circumstances, the connection between the terminal fittings and the windings tied to the terminal fittings generally depends on soldering at present. However, as is widely known, soldering is not only time-consuming and easy to affect the environment, but also has low reliability of connection. Quality degradation is likely to occur.

Conventionally, a phase-advancing capacitor 15 electrically connected to the primary and secondary coil windings 10 and 11 is disposed between the two coil windings 10 and 11.
By connecting them with the crossover wires 12, as a result, the phase-advancing capacitor 15 provided by connecting the terminal fittings 17i and 17j is connected in a circuit between both coil windings 10 and 11. Providing the crossover wiring 12 was indispensable. For this reason, two windings are connected to the terminal fitting to which the crossover wiring 12 is connected, which has been an obstacle when performing solderless connection such as fusing connection as described above.

Accordingly, a first object of the present invention is to provide a discharge lamp ballast which can improve the quality by improving the reliability of connection between a winding and a terminal fitting.

A second problem to be solved by the present invention is that a phase-advancing capacitor can be connected between coil windings on the primary side and the secondary side without using a crossover. An object of the present invention is to provide a discharge lamp ballast that can solve the first problem.

[0014]

According to the present invention, there is provided a coil bobbin having a plurality of filament winding sections adjacent to each other at a longitudinal center portion, and having coil winding sections on both sides thereof, A plurality of terminal fittings respectively attached to terminal blocks formed at both ends in the longitudinal direction of the bobbin, a plurality of filament windings respectively wound around the filament winding section,
A discharge lamp ballast having a primary coil winding wound around one coil winding section and a secondary coil winding wound around the other coil winding section is assumed. I do.

[0015] In order to solve the first problem, the invention according to claim 1 is characterized in that, of the terminal fittings, only one winding is individually used for terminal fittings necessary for winding each winding. In addition to being entangled, these required terminal fittings and one winding tied thereto are connected without soldering.

According to the first aspect of the present invention, since only one winding is individually entangled for each of the terminal fittings required on the winding, the windings are connected to these terminal fittings. In this case, the conditions can be the same, and accordingly, a terminal fitting and only one winding entangled therewith can be connected by a solderless connection method such as fusing connection.

In practicing the invention of claim 1 including a phase advance capacitor, a terminal fitting to which the primary coil winding is connected and a terminal fitting to which the secondary coil winding is connected. Are arranged side by side on one terminal block of the coil bobbin, and these terminal fittings are connected by the capacitor for phase advance, and the primary and secondary coil windings are electrically connected via this capacitor. Good to do.

As described above, the phase-advancing capacitor is provided over the two terminal fittings to which the primary and secondary coil windings are connected, and by connecting these two terminal fittings, the primary side and the secondary side are connected. It is separate from the coil windings, and the crossover wiring for electrically connecting these coil windings can be omitted. Therefore, only one winding can be entangled for each terminal fitting required on the winding.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 12 is an electric circuit diagram of a two-lamp fluorescent lamp illuminator. In FIG. 12, reference numeral 21 denotes a fast-discharge type ballast according to the first embodiment, and reference numerals 22 and 23 denote fluorescent lamps. . Further, in a case (not shown) provided in the discharge lamp ballast 21, a starting capacitor 2 shown in FIG.
4, a phase-advancing capacitor 25, a noise prevention capacitor 26, and the like.

The discharge lamp ballast 21 has a transformer main body 31 shown in FIG.
And an iron core structure 33. As described later in detail, the coil 32 is attached to a coil bobbin 34 made of synthetic resin.
A primary-side coil winding 35 and a secondary-side coil winding 36
And the first to third filament windings 37 to 39 are respectively wound.

As shown in FIG.
Is a side leg iron core 40 formed by laminating a large number of iron core plates 40a made of thin steel plates punched out to the same size in a rectangular shape and connecting them by welding or the like; It is formed by combining a plurality of iron core plates 41a each formed of a thin steel plate stamped into the same shape and formed in the same size, and being combined with a center leg iron core 41 connected by welding or the like. The central leg iron core 41 has a recess 42 formed on the inner surface of the side leg iron core 40 with two longitudinal ends projecting from both ends of the coil bobbin 34 in a state where the coil 32 is fitted on the outer periphery thereof.
And is disposed inside the side leg iron core 40. The side leg iron core 40 is integrally formed with a leakage convex portion 43 approaching the central side surface of the central leg iron core 41. Instead of this, the leakage convex portion 43 may be integrally provided from the side surface of the central portion of the central leg iron core 41. Reference numerals 44 in FIGS. 10 and 11 denote through holes in the central leg iron core 41 whose characteristics are being adjusted.

The structure of the coil bobbin 34 is shown in FIGS.
A description will be given with reference to FIG. The bobbin 34 is formed of first to seventh section flanges 52 to 5 which project outward from the outer periphery of a square tubular body 51 fitted to the center leg iron core 41.
And a terminal block 59 at both ends in the longitudinal direction.
60. The trunk portion 51 has a window hole 51a on the side surface at the central portion in the longitudinal direction to expose the side surface of the center leg iron core 41. In addition, each of the section flanges 52 to 58 has, on its outer periphery, a winding 35 to besides the structure described below.
It has projections and depressions for guiding and positioning the 39.

First and second section flanges 52, 5
Reference numeral 3 designates a first coil winding section 61 at one end of the body 51, and one terminal block 59 is integrally formed on the first section flange 52 provided at one end of the body 51. It is protruding. The third and fourth section flanges 54 and 55 partition the second coil winding section 62 at the other end of the body 51, and the third section provided at the other end of the body 51. Flange 54
, The other terminal block 60 is integrally protruded.

Fifth to seventh section flanges 56 to 5
Reference numeral 7 is located between the second and fourth section flanges 53 and 55 at a central portion in the longitudinal direction of the body portion 51 and is juxtaposed and juxtaposed to each other. The second section flange 53 and the fifth section flange 56 partition the first filament winding section 63. Similarly, the fifth section flange 56 and the sixth section flange 57 are connected to the second filament winding section 6.
The fourth section flange 57 and the seventh section flange
The section flange 58 partitions the third filament winding section 65.

The terminal block 60 at one end in the longitudinal direction of the coil bobbin 34 has a plurality of terminal fittings 66 to 72 (FIG. 6).
And FIG. 8) are mounted side by side, and a plurality of, for example, seven terminal fittings 73 to 79 (see FIG. 6 and FIG. 8) are also provided on the terminal block 59 at the other end in the longitudinal direction of the coil bobbin 34.
Are installed side by side. These terminal fittings 66 to 79
Are mounted by press-fitting into respective mounting grooves indicated by dotted lines in FIG. The primary-side coil winding 35 is wound around the section 61, and the secondary-side coil winding 36 is wound around the section 62. A first filament winding 37 is wound around the section 63. Similarly, a second filament winding 38 is wound around the section 64, and a third filament winding 39 is wound around the section 65. The second filament winding 38 is formed by a winding part integrally extended from the primary coil winding 35, and similarly, the third filament 39 is formed by a winding part integrally extended from the secondary coil winding 36. It is formed with.

As shown in FIGS. 1, 4, 5, and 7, the first filament winding section 63 includes:
A first winding drum cover wall 80 located on one side of the drum portion 51;
A second winding drum cover wall 81 is provided on the other side of the drum portion 51. The first winding drum cover wall 80 is slightly separated from the trunk portion 51, and the section flange 53,
56 are provided so as to be integrally connected to each other to form a gap 82 between the body portion 51 and the body portion 51. The crossover gap 82 is open at the second filament winding section 64 side, and communicates with the section 64.
Both ends in the longitudinal direction of the crossover gap 82 are open into the first filament winding section 63. The second winding drum cover wall 81 is also provided with the section flanges 53 and 56 integrally connected at a slight distance from the drum 51 to form a bridging gap 83 with the drum 51. I have. The crossover gap 83 is also open at the second filament winding section 64 side and communicates with the section 64, and one longitudinal end of the crossover gap 83 opens into the first filament winding section 63. In addition, the other end in the longitudinal direction is closed, whereby the cross gap 83 has a triangular shape (the boundary line is shown by an oblique dotted line in FIG. 3).

The first filament winding section 63
FIG. 5 (A) shows the flange portions projecting below the trunk portion 51 in the two section flanges 53 and 56 partitioning from FIG.
As shown in (B), slits 84 to 87 are provided on the outer periphery of the flange portion. Slit 8
Reference numerals 4 and 85 are provided on the second section flange 53 and communicate with the end of the cross gap 82 or 83. Slits 86 and 87 provided in the fifth section flange 56 so as to individually oppose these slits 84 and 85 are also communicated with the ends of the crossover gap 82 or 83. Further, a slit 88 communicating with the other end of the gap 82 is also provided in the upper portion of the fifth section flange 56, and this also forms a dive wiring means. The transition gap 82 and the slits 84 and 86 communicating therewith constitute a dive wiring means, and the transition gap 83 and the slit 8 communicating therewith.
Reference numerals 5 and 87 represent other dive wiring means.

The second filament winding section 64
A part of the winding drum of the body portion 51 located in
In (B), the upper winding surface of the body portion 51 is formed with a thick portion 89. The thick portion 89 is formed such that the end on the side where the transition gap 82 is located is thickest and the thickness is gradually reduced toward the end on the side where the transition gap 83 is located. A concave groove 90 is formed in the thickest portion so as to cut inward from the surface toward the inside of the body portion 51. Also, the fifth and sixth section flanges 56 and 57 that partition the second filament winding section 64 respectively include:
As shown in FIGS. 5 and 7, a similar groove 91 or 92 is formed opposite to the groove 90. These grooves 9
Reference numerals 1 and 92 are open to the outer periphery of the section flanges 56 and 57, respectively. Each of the grooves 90-92 forms a dive wiring means. Also, the seventh section flange 58
Most of the flange portion located on the upper winding drum surface of the trunk portion 51 is removed, and a communication groove 93 is provided.

Next, an example of a procedure for forming the coil 32 by winding the windings 35 to 39 around the coil bobbin 34 to which the terminal fittings 66 to 79 are attached will be described with reference to FIGS. I do.

First, one end of the secondary-side coil winding 36 is tied to the terminal fitting 70 and connected thereto.
Is wound around the second coil winding section 62, and the end of the winding is wrapped around the terminal fitting 67. Subsequently, this winding 36 is connected to the coil winding 3 already wound.
6 along the upper side of 6, through the wire groove 93, is guided to the third filament winding section 65, and is wound around this section 65 as the third filament winding 39,
Finally, the other end of the winding 39 is tied to the terminal fitting 66.

Following the winding of the secondary-side coil winding 36, the third filament winding 39 integral with the winding 36 is continuously wound around the coil bobbin 34.
The procedure of the first winding step as described above is shown by a to e in FIG. 8A and is carried out by an automatic winding machine. Therefore, the wire having the same wire diameter can be used for the coil winding 36 and the filament winding 39 which are continuously wound as described above.

Next, one end of the coil winding 35 on the primary side is entangled with the terminal fitting 68 and then guided along the coil winding 36 already wound.
2 and through a slit 88 so as to make a U-turn in the first filament winding section 63, and guide it to the second filament winding section 64.
After that, it is guided to one of the crossover gaps 82 opened to the section portion 64, and then to the first coil winding section portion 61 through a slit 84 communicating with the gap portion 82.

As a result, a part of the coil winding 35, that is, the crossover wiring portion 35a can be wired to the first and second filament winding section portions 63 and 64 along the winding drum. FIG. 7 shows the wiring condition of the crossover wiring portion 35a.

Subsequently, the coil winding 35 led out to the section portion 61 is wired so as to wind substantially half the circumference of the section portion 61 and then entangled with a terminal fitting 76. After the lower winding of the coil winding 35, the winding of the coil winding 35 is completed. After this, the coil winding 3
5 is entangled with the terminal fitting 72 and then wired as the primary coil along the upper side of the coil winding 35 already wound on the section 61 as described above. After the other end of the coil winding 35 is wound around the section 64 as the second filament winding 38, the winding end end is wound around the section 62. The wiring is carried out along the upper side of 36 and entangled with the terminal fitting 71.

Subsequent to the winding of the coil winding 35 on the primary side, the second filament winding 38 integral with the winding 35 is continuously wound around the coil bobbin 34.
The procedure of the second winding process as described above is indicated by the arrows in FIG. 8B and is carried out by an automatic winding machine. Therefore, the wire rods having the same diameter can be used for the coil winding 35 and the filament winding 38 which are continuously wound as described above.

In the second winding step, when the coil winding 35 is wired from the terminal fitting 74 to the terminal fitting 72, a part of the coil winding 35, that is, a crossover wiring portion 35b (FIG. 8B ) Are wired across the filament winding sections 63 to 65 as described above. In this case, the crossover wiring portion 35b is
It passes through the slit 85 of the second section flange 53 and the slit 87 of the fifth section flange 56 facing the slit 85, and has the transition gap 8 communicating with the slit 87.
3 through the second filament winding section 64.
After being drawn out from this section 64, it can be led out to the already wound secondary side coil winding 36 side through the through groove 93 of the seventh section flange 58. it can.

As a result, the crossover wiring portion 35b of the coil winding 35 can be connected to the second and third filament winding sections 63 and 64 along the winding drum surface. The wiring condition of the crossover wiring portion 35a is the same as that in FIG.

Finally, one end of the first filament winding 37 is entangled with the terminal fitting 69, and then is passed through the wire groove 93 along the upper side of the already wound secondary coil winding 36. To the first filament winding section 63 and wound around the section 63 as a lower winding. Next, wiring is performed along the upper side of the coil winding 35 on the primary side, which has been drawn out from the section 63 and is already wound, is entangled with the terminal fitting 78, and is then formed again along the upper side of the coil winding 35. Then, it is guided to the section 63 and wound around the section 63 as an upper winding. Thereafter, it is pulled out from the section 63 again, wired along the upper side of the coil winding 35 and tied to the terminal fitting 79.

The procedure of the third winding step of the first filament winding 37 wound around the coil bobbin 34 in this manner is indicated by reference numerals R to N in FIG. 8C and is carried out by an automatic winding machine. In the windings according to the above-described procedure, at points where the respective windings intersect, appropriate insulation measures such as interposition of insulating paper are adopted so that the intersecting windings do not directly contact each other.

Various capacitors 2 are provided for the terminal fittings 66 to 70, 72 arranged in parallel with the terminal block 60 of the coil 32 assembled as shown in FIG.
4 to 26 are connected. That is, the starting capacitor 24 is provided by connecting the terminal fittings 67 and 69, the phase advance capacitor 25 is provided by connecting the terminal fittings 68 and 70, and the noise preventing capacitor 26 is provided by the terminal fitting 66. ,
72 are connected. In particular, the phase advance capacitor 25 connects one lead 25a of a pair of leads 25a of the capacitor 25 to the terminal fitting 68 to which the primary coil winding 35 is connected, and connects the other lead 25a to the secondary side. The coil winding 36 is arranged so as to be connected to the connected terminal fitting 70. By connecting the phase advance capacitor 25, the primary side and secondary side coil windings 35 and 36 can be electrically connected via the capacitor 25. Thereby, in order to connect between both coil windings 35 and 36,
The crossover wiring routed so as to cross over these is omitted.

The terminal fittings 75 and 76 are connected to a power supply. And the terminal fittings 78 and 79 are two fluorescent lamps 2
2 and 23 are commonly electrically connected to one of the pair of filaments respectively, and have terminal fittings 71 and 7 respectively.
2 is electrically connected to the other filament of one fluorescent lamp 22, and similarly, the terminal fittings 66 and 67 are electrically connected to the other filament of the other fluorescent lamp 23. . Also, terminal fittings 73, 74, 7
Reference numeral 7 denotes an empty terminal.

The crossover wiring portions 35a and 35b, which are part of the primary side coil winding 35, are wired across the filament winding sections 63 to 65. These wiring portions 35a and 35b are As a result of the assembling, as shown in FIG. 7 as a representative, wiring is performed so as to be passed under the first and second filament windings 37 and 38 by the dive wiring means. Therefore, when the first and second filament windings 37 and 38 are wound around the first and second filament winding sections 63 and 64, and when the coil winding 35 is wound, the transition wiring portions 35a and 35b are wound.
Is not in the way. Note that the previously wound third filament winding 39 is a part of the coil winding 36,
It is connected only to the terminal fittings 66, 67, 70 on the winding 36 side, and is wired across the first and second filament winding section sections 63, 64 and the first coil winding section section 61. Therefore, there is no hindrance when winding the first and second filament windings 37 and 38 and the coil winding 35. Therefore, in the configuration in which the diving wiring means of the coil bobbin 34 is provided as described above, the predetermined winding can be completed in the first to third winding steps as apparent from the assembling procedure, and FIGS. In this case, the number of winding steps can be reduced to three steps as compared with the conventional winding steps (six steps) shown in FIG.

Moreover, as described above, the secondary coil winding 36 and the filament winding 39 are continuously wound with a wire having the same wire diameter, and the primary coil winding 35 and the filament winding 38 are Is continuously wound with a wire having the same wire diameter, and one filament winding 37 is wound independently. Therefore, when the thickness of the wire to be used is changed, only three types of wire are used at the maximum. Therefore, the number of types of windings used in the winding operation can be reduced, and in this regard, the efficiency of the winding operation can be improved.

The first filament winding 37 supported around the outer periphery of the fifth and sixth section flanges 56 and 57 by the above-mentioned winding structure comprises a part of the primary-side coil winding 35 to which a high voltage is applied. Second filament winding 38
Is wound across the second filament winding section 64 around which the wire is wound. This crossing position is immediately above the thinnest side of the thick portion 89 as shown in FIG. 5 (B). Therefore, despite the fact that the second filament winding 38 wound around the second filament winding section 64 is wound along the outer surface of the thick portion 89, the filament winding 38 on the thick portion 89 and the second The space insulation distance E between one filament winding 37 can be made longer. Therefore, electrical insulation between the first and second filament windings 37 and 38 can be ensured.

In the above winding structure, the primary coil winding 35 and the filament winding 3 connected thereto are connected.
8 is formed by one continuous electric wire, and the electric wire is continuously wound around the corresponding section portions 61 and 64 of the coil bobbin 34, and the secondary coil winding 36 and the filament winding 39 connected thereto are formed. Is formed by one continuous electric wire, and the electric wire is wound around the corresponding section portions 62 and 65 of the coil bobbin 34, and the two filaments and the first filament winding 37 wound around the section portion 63 are formed. Of the terminal fittings 6
6 to 79 (excluding the empty terminals 73, 74, 77). As shown in FIG. 10, each of the windings 35 is connected to a winding tang 94 formed by cutting and raising a part of each of the terminal fittings 66 to 79.
The process is performed by entanglement of the end portions and the intermediate portion of ~ 39. According to such a structure, as shown in FIG. 6, each of the winding entangled pieces 94 of the individual terminal fittings required on the winding includes:
Only one winding is entangled, and a plurality of windings are not entangled with one winding entanglement piece 94.

Moreover, as described above, both coil windings 35,
The terminal fitting 68 to which the primary-side coil winding 35 is connected is formed by a winding structure in which the connecting wire portions 35a and 35b formed by a part of the wire 36 pass under the filament windings 37 and 38.
And a terminal fitting 70 provided on the same terminal block 60 together with the fitting 68 and to which the secondary coil winding 36 is connected.
Since both terminal fittings 68 and 70 are electrically and directly connected via the phase advance capacitor 25 by utilizing this, the primary side and the secondary side can be arranged side by side. In order to connect the coil windings 35 and 36, both coil windings 3 and
There is no need for crossover wiring that is laid so as to cross over 5, 36. Therefore, a plurality of windings are not entangled with one winding entanglement piece 94.

Therefore, the winding entangled piece 9 with the winding entangled
4 and the winding tang 94 to which the lead 25a of the phase advance capacitor 25 is connected is folded down along the terminal fitting having the same, and the winding tang piece or the lead 25a is brought into contact with the terminal fitting. Can be connected by solderless connection method,
In the first embodiment, fusing connection is adopted. This fusing connection is performed by energizing the electrode rod in a state where the portion where the winding entanglement piece 94 is located is sandwiched between the electrode rods from above and below, so that the terminal fitting and the winding entangled along the terminal fitting are bent. This is a connection method for electrically and mechanically connecting the winding or the lead 25a, the terminal fitting, and the winding by causing the winding or the like sandwiched between the bushing 94 and the winding or the like to generate resistance heat. In this fusing connection, the insulating coating of the winding is melted due to the heat generation, so that electrical conduction between the winding and the terminal fitting is achieved.

In this fusing connection, as described above, since only one winding is connected to one terminal fitting, the connection conditions are the same, for example, two wire diameters are different. Unlike the case where the winding is connected to the same terminal fitting by fusing, there is no possibility of poor conduction or mechanical connection failure, and the terminal fitting is securely entangled with the terminal fitting.
Book windings can be connected. Therefore, according to the discharge lamp ballast 21 in which the windings and the terminal fittings are connected by the fusing connection as described above, the productivity can be improved, and the electric connection between the windings and the winding entanglement piece 94 can be improved. Therefore, the quality of the discharge lamp ballast 21 can be improved. In addition, since soldering is not performed in connecting the windings to the terminal fittings as described above, various problems associated with soldering (short-circuiting of adjacent terminal fittings via soldering, electrical shortage due to insufficient soldering, etc.) Poor electrical continuity, the effect of solder on the environment, etc.).

As shown in FIG. 10, each of the terminal fittings 66 to 79 has an elastically deformable locking piece 95 having a substantially R-shaped side surface at the tip end thereof. It has a locking hole 96 facing the tip, and is connected to the corresponding terminal fittings of the various capacitors 24 to 26 using this structure without soldering.

That is, as a representative of the phase-advancing capacitor 25, the lead 25a of this capacitor 25 is inserted into the lock hole 96 from the direction of arrow A in FIG.
While the locking piece 95 is elastically deformed and pushed by the lead 25a, the tip of the locking piece 95 and the base portion of the terminal fitting facing the tip (this portion includes the wire binding piece 94).
Has been cut and raised. ), The lead 25a is elastically sandwiched between the lead 25a and the lead 25a, and is electrically and mechanically connected to the lock fitting. An external electric wire (not shown) for connecting the discharge lamp ballast 21 to the power supply or the fluorescent lamps 22 and 23 is also inserted into a predetermined terminal fitting, and is electrically and mechanically provided by a self-locking structure similar to the lead 25a. At this time, at the point where the leads or the lead and the windings cross each other, appropriate insulating measures such as interposing an insulating member so as not to directly contact each other are adopted.

In the first embodiment adopting the structure in which the various capacitors 24 to 26 and the like are mounted without soldering, the connection workability and the reliability of the electrical connection can be improved. 21 can be improved, and since soldering is not performed, various problems associated with soldering (short circuit of adjacent terminal fittings via solder, poor electrical conduction due to insufficient soldering, Effects). However, in the present invention, the connection between the various capacitors 24 to 26 and the terminal fittings therefor can be made by soldering.

[0053]

The present invention is embodied in the form described above and has the following effects.

According to the first aspect of the present invention, each of the terminal fittings required on the winding is connected to one of the terminal fittings.
Since only the windings of the book are electrically connected, a connection method without soldering such as fusing connection can be adopted for the connection, and therefore, the reliability of the connection between the windings and the terminal fittings can be improved and the quality can be improved. .

According to the second aspect of the present invention, the first and second coil windings are electrically connected to each other. Is not required, only one winding can be entangled with respect to each of the necessary terminal fittings on the winding, whereby the same effect as the invention of claim 1 can be obtained. it can.

[Brief description of the drawings]

FIG. 1 is a plan view of a coil bobbin included in a coil of an advanced discharge lamp ballast according to a first embodiment of the present invention.

FIG. 2 is a side view of the coil bobbin shown in an arrow Z direction in FIG.

FIG. 3 is a side view of the coil bobbin shown in an arrow Y direction in FIG.

FIG. 4 is a bottom view of the coil bobbin shown in FIG. 1;

FIG. 5A is a cross-sectional view of the coil bobbin shown along line XX in FIG. (B) is sectional drawing of the coil bobbin shown along the WW line in FIG. (C) is sectional drawing of the coil bobbin shown along the VV line in FIG.

FIG. 6A is a plan view of a coil included in the discharge lamp ballast according to the first embodiment. (B) is a side view of the coil provided in the discharge lamp ballast according to the first embodiment.

FIG. 7A is a plan view partially showing a configuration around a section for filament winding of the coil shown in FIG. 6; FIG. 7B is a side view showing a part of the configuration around the filament winding section of the coil shown in FIG.

FIG. 8A is a diagram illustrating a first winding step of the coil on the bobbin shown in FIG. 1; FIG. 2B is a diagram illustrating a second winding step of the coil on the bobbin illustrated in FIG. 1.
FIG. 2C is a diagram illustrating a third winding step of the coil on the bobbin illustrated in FIG. 1.

FIG. 9 is a diagram schematically showing a winding method of a coil of the discharge lamp ballast according to the first embodiment.

FIG. 10 is a vertical sectional side view showing the configuration of a transformer main body provided in the discharge lamp ballast according to the first embodiment.

11 is an exploded perspective view showing a configuration of an iron core structure provided in the transformer main body shown in FIG. 10;

FIG. 12 is a diagram showing an electric circuit of a two-lamp lighting device including the discharge lamp ballast according to the first embodiment.

FIG. 13A is a plan view of a coil provided in a conventional discharge lamp ballast. (B) is a side view of the coil provided in the discharge lamp ballast according to the conventional example.

FIG. 14 is a diagram showing an electric circuit of a coil included in a phase advance type discharge lamp ballast according to a conventional example.

[Explanation of symbols]

 Reference numeral 21: discharge lamp ballast, 25: lead capacitor, 25a: lead of lead capacitor, 32: coil, 34: coil bobbin, 35: coil winding on the primary side, 36: coil winding on the secondary side, 35a, 35b: transition wiring portion, 37: first filament winding, 38: second filament winding, 39: third filament winding, 59, 60: terminal block, 61: section for first coil winding, 62 ... Section section for second coil winding, 63 section section for first filament winding, 64 section section for second filament winding, 65 section section for filament winding, 66 to 79 first to first section 14 terminal fittings.

Claims (2)

[Claims] 1. A coil bobbin having a plurality of filament winding sections adjacent to each other at a longitudinal central portion thereof and having coil winding sections on both sides thereof, and a coil bobbin at both longitudinal ends of the bobbin. A plurality of terminal fittings respectively attached to the formed terminal block, a plurality of filament windings respectively wound around the filament winding section, and a primary side wound around one coil winding section. A coil winding, and a secondary coil winding wound around the other coil winding section, a discharge lamp ballast comprising: While tying only one winding individually for terminal fittings,
A discharge lamp ballast characterized in that these necessary terminal fittings and one winding entangled therewith are connected without soldering. 2. A terminal fitting comprising a capacitor for phase advance, wherein said terminal fitting to which said primary coil winding is connected and a terminal fitting to which said secondary coil winding is connected, are connected to one terminal block of said coil bobbin. The terminal fittings are connected by the capacitor for phase advance, and the coil windings on the primary side and the secondary side are electrically connected via the capacitor. 2. The discharge lamp ballast according to 1.