JPS6314424Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure for fixing an insulating plate in a transformer, and is designed to easily and reliably fix the insulating plate.

For example, in an insecticide transformer, the secondary side is at high voltage, so after connecting the lead wire to the secondary coil,
The connection part is covered with an insulating plate. That is, the first
As shown in the figure, since the iron core 2 of the insecticide transformer 1 has iron cores 2a, 2b, and 2c welded together, if the lead wires 4 and 5 are connected to the secondary coil 6 in advance, the Since the wires 4 and 5 get in the way and work efficiency becomes very poor, the lead wires 4 and 5 are removed after welding the core 2.
5 is connected to a secondary coil 6, and the connected portion is covered with an insulating plate 7. However, as shown in FIG.
Since the insulating plate 7 was fixed by pasting the tape 10, it was sometimes impossible to insert the tape 10 between the coil 6 and the iron core 2. There was a problem in that the ends of the insulating plate 7 were turned up and the insulating plate 7 was lifted up.

The present invention solves the above problems and is characterized by fitting insulating covers to both ends of the coil, and connecting the coil and the lead wire on the outer circumferential surface of the coil between the covers. , in a transformer in which an insulating plate is provided to cover the connection part, a fixing plate is provided on the insulating plate that spans both the insulating covers, and a fixed plate is attached to each of the insulating covers corresponding to both ends of the fixing plate. A cut is made in the axial direction of the coil from the inner end to the outer end, and a part of both ends of the fixing plate are inserted between the insulating cover and the coil through the cut so that the fixing plate presses the insulating plate toward the outer peripheral surface of the coil. It is at the point inserted and fixed in between.

Hereinafter, the present invention will be explained according to the illustrated embodiment. In FIGS. 2 to 5, 11 is an insecticide transformer, 12 is its iron core, and a pair of U-shaped iron cores 1
2a, 12b and an I-shaped core 12c are assembled in a diagonal shape and welded together (13). 14 is a primary coil wound around one end of the I-shaped core 12c, and 15 is a secondary coil wound around the other end of the I-shaped core 12c. Note that these coils 14, 1
In 5, interlayer insulating paper is interposed for each layer, and
Insulating paper is wrapped around the outer periphery. 16,1
Reference numeral 7 denotes a pair of insulating covers, which cover the secondary coil 1 so as to cover both end surfaces and both ends of the outer peripheral surface of the secondary coil 15.
5, respectively. Reference numerals 18 and 19 denote a pair of lead wires, one end of each of which is connected to an insulating cover 16,
Each lead wire 18, 19 is connected to both terminals of the coil 15 on the outer circumferential surface of the coil 15 between the coils 17 and 17 by soldering via the terminal board 20, and each lead wire 18, 19 is connected to one insulating cover from the outer circumferential surface of the coil 15. It is drawn out through the upper surface of 17. Reference numeral 21 denotes a U-shaped insulating plate, which is disposed above the outer peripheral surface of the coil 15 between the insulating covers 16 and 17 so as to cover the connecting portion between the lead wires 18 and 19 and the coil 15. Note that both lower ends of the insulating plate 21 are connected to the coil 15 and the U-shaped iron core 1.
2a and 12b. Reference numeral 22 denotes an elastic fixing plate, which is arranged on the insulating plate 21 between the lead wires 18 and 19 so as to straddle the insulating covers 16 and 17. 23 and 24 are notches provided in the insulating covers 16 and 17 corresponding to both ends of the fixing plate 22, and are formed in a U-shape such that the upper ends of the insulating covers 16 and 17 are directed outward from the inner ends thereof. has been done. Parts of both ends of the fixing plate 22 are inserted between the insulating covers 16 and 17 and the coil 15 through the notches 23 and 24 and fixed, so that the fixing plate 22 holds the insulating plate 21 on the outer circumference side of the coil 15. It is held in place by holding it in place. Therefore, as in the conventional case, the fixation of the insulating plate 21 becomes weak due to heat or the like, and the insulating plate 21
floating up, the insulating plate 21 can be securely fixed by the fixing plate 22, and when fixing, simply make cuts 23 and 24 at both ends of the fixing plate 22.
It is only necessary to insert the insulating cover 16 between the insulating cover 16 and the coil 15, and fixation can be easily achieved.

In the embodiment described above, the notches 23 and 24 are formed in a U-shape, but instead of this, as shown in FIG. You may.

According to the present invention, in order to press the insulating plate toward the outer peripheral surface of the coil by the fixing plate provided on the insulating plate, a part of both ends of the fixing plate is inserted between the insulating cover and the coil through the notch in each insulating cover. Since the insulating plate is inserted into and fixed in place, there is no possibility that the fixation of the insulating plate becomes weak due to heat or the like and the insulating plate lifts up, unlike in the conventional case. Moreover, since the cut is a cut in the coil axial direction from the inner end to the outer end of the insulating cover,
Through these notches, parts of both ends of the fixing plate can be inserted between the insulating cover and the coil extremely easily without curving the fixing plate. Since it is sandwiched between the insulating cover and the coil, it is difficult for it to come off, and therefore the insulating plate can be easily and reliably fixed by the fixing plate.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional example, FIG. 2 is a perspective view showing an embodiment of the present invention, FIG. 3 is a plan view of the same, FIG. 5 is a sectional view taken along the line B--B in FIG. 3, and FIG. 6 is a plan view showing another embodiment. 11... Insect killer transformer, 15... Secondary coil, 16, 17... Insulation cover, 18, 19...
Lead wire, 21...Insulating plate, 22...Fixing plate, 2
3,24...notch.

Claims (1)

[Scope of utility model registration request] In a transformer in which insulating covers are fitted to both ends of the coil, the coil and the lead wire are connected on the outer peripheral surface of the coil between the covers, and an insulating plate is provided to cover the connection part, the insulating cover A fixing plate that spans both insulating covers is provided, and a notch is provided in each of the insulating covers corresponding to both ends of the fixing plate in the direction of the coil axis from the inner end to the outer end of the cover. A fixing structure for an insulating plate in a transformer, characterized in that a part of both ends of the fixing plate are inserted between the insulating cover and the coil through the notch and fixed so as to press the insulating plate against the outer peripheral surface of the coil. .