JPH0211785Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a terminal device for a discharge lamp ballast.

As is well known, this type of terminal device is constructed by folding a terminal paper in half and installing a terminal fitting on one of the folded pieces, and fixing the terminal fitting on the iron core of the ballast. . By the way, in the past, terminal fittings
In order to fix the terminal on the core, a claw is formed by cutting and raising the uppermost magnetic steel plate of the magnetic steel plates that make up the core, and this claw is caulked to form a terminal. I was trying to fix it.

However, when using this type of fixing means, it is necessary to cut and raise the claws of the magnetic steel plate, which not only increases the number of processing steps, but also requires a caulking process for the claws, making the work of fixing the terminal extremely troublesome. There are drawbacks such as:

The purpose of this invention is to simply and reliably fix the terminal fitting to the ballast.

An embodiment of this invention will be described with reference to the drawings. 1st
In the figure, 1 is a ballast for a discharge lamp, which includes an iron core 2 having a central leg and side legs, and a coil 3 wrapped around it.
Consisting of: Reference numeral 4 denotes a terminal fitting, which is constructed by folding a terminal paper in half, and a terminal fitting 7 is installed on one of the two pieces 5 and 6.
A lead wire from the coil 3 or a lead wire leading to an external circuit (for example, a power source, a socket for a discharge lamp, etc.) is connected to the terminal fitting 7 by soldering or the like.
These structures are not particularly different from conventional devices of this type.

FIG. 2 is an exploded perspective view of the terminal fitting 4 according to this invention. As will be understood, one edge has a generally trapezoidal tongue piece 11 in its center, and on both sides there are a pair of insert pieces 1 whose free ends face each other.
2 and 13 are formed. The other edge of the terminal 4 is provided with an upright piece 14 at both ends, and a notch 15 having a tapered width is formed approximately in the center thereof.

In the unfolded state shown in Fig. 2, first insert piece 1
2 and 13 along a line perpendicular to the edge of the piece 5 and the upright piece 14 along a direction line parallel to the edge of the piece 6 into a chevron shape. FIG. 3 shows the state at this time. Next, this is folded in half along the dotted line, and the back surface of one piece 5 is overlapped with the back surface of the other piece 6. FIG. 4 shows this state. At this time, the tongue piece 11 is fitted into the notch 15.
The tongue piece 11 has a trapezoidal shape, and the cutout part 15 has an inverted trapezoidal shape with a tapered width, so if the base end of the tongue piece 11 is fitted to the bottom of the cutout part 15, the tongue piece 11 is fixed to the notch 15 in a circular manner. That is, the overlapping state of the two pieces 5 and 6 by folding in half is reliably maintained, and the solder for connecting the terminal fitting 7 and the lead wire is on the overlapping surface.
This prevents contact with the solder of adjacent terminal fittings.

The terminal fitting 4 constructed as described above is placed on the surface of the iron core 2 as shown in FIG. Then, the tongue piece 11 is inserted between the center leg of the iron core 2 and the inner surface of the coil 3. By fully inserting this, even if an external force is applied to the terminal 4 that causes it to rise from the surface of the iron core 2, the engagement between the tongue piece 11 and the inner surface of the coil 3 prevents it from rising. be done. Furthermore, even if an external force acts on the terminal 4 to push it toward the coil 3, the tongue piece 11 will not be inserted any further into the inner surface of the coil 3, thereby preventing the terminal 4 from moving in the same direction. be done.

In addition, insert pieces 12 and 13 are inserted between the outer legs 2A of the iron core 2 and the circumferential surface of the coil 3. Even if an external force is applied to the terminal fitting 4 to pull it away from the coil 3 side because it is fully inserted, the insertion piece 1
2 and 13 engage with the inner surface of the outer leg 2B of the iron core 2, thereby preventing the terminal fitting 4 from moving in the same direction. As described above, the terminal fitting 4 is reliably fixed and supported on the stabilizer 1 only by the engagement of the tongue piece 11, the insertion pieces 12, 13, the iron core 2, and the coil 3.

Note that the upright piece 14 is effective in preventing the lead wire extending between the coil 3 and the terminal fitting 7 from coming into contact with the iron core 2. Further, the upright frame pieces 18 on both sides of the upright piece 14 are convenient for preventing the lead wire from coming out from between the two upright frame pieces 18.

As detailed above, according to this invention, when fixing the terminal to the stabilizer, there is no need for any claws cut and raised in the iron core as in the conventional case, and tongue pieces provided on the outer periphery of the terminal are not required. ．． Since the insertion piece is fixed by engagement with the iron core and the coil, the effect is that the fixation can be done simply and reliably.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an embodiment of this invention;
3 is an exploded perspective view of the terminal, FIG. 3 is a perspective view of the terminal in the bending process, and FIG. 4 is a perspective view of the terminal. 1... Stabilizer, 2... Iron core, 2A... Outer leg, 3
... Coil, 4 ... Terminal fitting, 5, 6 ... Piece, 7
... Terminal fitting, 11 ... Tongue piece, 12, 13 ... Insertion piece, 14 ... Standing piece, 15 ... Notch part.

Claims (1)

[Scope of utility model registration request] A terminal metal fitting is provided on one piece of the terminal paper to be folded in half, and a tongue piece is provided at the center of the edge of the piece, and a line perpendicular to the edge of the tongue piece is provided on both sides of the tongue piece. An insert piece is provided that is bent from the base end along
The upright piece is provided with a notch into which the tongue piece fits when folded in half, and the tongue piece is placed between the inner surface of a coil wound around the iron core of the ballast and the center leg of the iron core, Further, there is provided a terminal device for a discharge lamp ballast, wherein the insertion pieces are respectively inserted between the outer legs of the iron core and the circumferential surface of the coil.