JPH0246019Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications This invention relates to an insulator for high voltage transformers.

2. Description of the Related Art There is an insulator for a high voltage transformer used for insulating between a high voltage secondary coil and an E-type core as shown in FIG.

In the same figure, the first insulators 1a and 1b have a substantially U-shaped cross section, and collar portions 11a and 11b extending in a direction perpendicular thereto are bent at one longitudinal end of each of the first insulators 1a and 1b. . These first insulators 1a, 1b
is sandwiched so as to cover and surround the middle leg portion 2a of the E-type iron core 2. The second insulators 3a, 3b and the third insulators 4a, 4b are each bent to have a substantially U-shape in longitudinal section. This second insulator 3
a, 3b and the third insulators 4a, 4b are installed so as to cover and surround two opposing sides of the secondary coil 5, with 3a and 4a and 3b and 4b stacked, respectively. . The purpose of this doubling is to ensure a sufficient lateral distance between the E-type iron core 2 and the high-voltage coil 5.

Problems to be solved by the invention Each of the insulators constituting the conventional high-voltage transformer insulators described above is independent, which makes the assembly work of the transformer complicated, and many workers have to work together to assemble the transformer. Work needs to be done. Therefore, there are disadvantages in that it requires manpower and has very low work efficiency. Also, as mentioned above, if the assembly work is not done quickly by a large number of people, the secondary coil 5
When the first insulators 1a and 1b are fitted into the middle leg part 2a of the E-shaped core 2, the first insulators 1a and 1b are separated from the middle leg part 2a, and the middle leg part 2a and both leg parts 2b and 2c of the E-shaped core 2 are separated.
In addition, the high voltage coil 5 may hit the product and cause scratches, making it unstable from a quality control perspective.

This idea was devised by paying attention to the above-mentioned circumstances, and it allows one person to quickly and reliably assemble the work, and it is also possible to assemble the high-voltage coil into the E-type core.
The purpose of the present invention is to provide an insulator for high-voltage transformers that prevents damage to the molded iron core.

Means for Solving the Problems In order to achieve the above object, this invention connects a pair of first insulators having a substantially U-shaped cross section facing each other in a cylindrical shape, and one end of the first insulators One side of each of the third insulators was connected to each of the flange parts.

Function: Since the first and third insulators, which are independent of each other, are connected, assembly work can be performed rationally.

Embodiment FIG. 1 is an explanatory diagram showing an embodiment of this invention. Each insulator described below is a highly heat-resistant material made of a polymeric material such as aramid paper or silicone resin.

In FIG. 1, first insulators 10a, 10b
is bent into a substantially U-shaped cross section, and has a flange 11 extending in the orthogonal direction at each lower end in the longitudinal direction.
a and 11b are bent. The first insulators 10a and 10b cover and surround the middle leg portion 51 of the E-type iron core 50, and each side of one of the first insulators 10a and 10b is overlapped and connected. That is, the first insulator 10 is welded using ultrasonic waves or the like at the part indicated by the cross in the figure.
a and 10b are connected in a cylindrical shape.

The third insulators 30a, 30b are bent into a substantially U-shape in longitudinal section, and their lower sides 31a, 31b
is processed into a substantially U-shape when viewed from above. This lower side 3
1a and 31b are overlapped and connected to the flanges 11a and 11b of the first insulators 10a and 10b. That is, the third insulators 30a, 30b are connected to the first insulators 10a, 10b by welding the portions indicated by crosses in the figure using ultrasonic waves or the like.

The second insulators 20a, 20b are bent in a substantially U-shape in longitudinal section, and the third insulators 30a,
The size is set to be slightly smaller than that of 30b. The second insulators 20a and 20b cover and surround two opposing sides of the high-voltage secondary coil 40 from the outside.

Next, an example of a procedure for assembling a transformer using each of the above-mentioned insulators will be explained.

The second insulators 20a and 20b are connected to the secondary coil 40
It is attached from the outside of the two opposing sides, that is, from the direction of arrows A and A in FIG.

This secondary coil 40 has first insulators 10a, 1
0b from the direction of arrow B in FIG.
Cover 0a and 20b.

After that, the above-mentioned 2
Next, insert the coil 40 from the direction of arrow C in FIG. This state is shown in FIG.

Note that the connecting portion between the first insulators 10a and 10b is not limited to the above embodiment, and may be changed as appropriate. Furthermore, in the above embodiment, the third insulator 30
Although the lower sides 31a and 31b of the lower sides 31a and 31b of the lower sides 31a and 31b of the lower sides 31a and 31b are processed into a U-shape in a plan view as an example, those that are not processed are also included in this invention.

Effects of the invention As explained above, according to this invention, the first insulator and the third insulator are connected to each other, so the work when assembling the transformer can be done more quickly and reliably than before. It becomes like this. Moreover, even if the first insulator is fitted into the E-type core, the first insulator will not come apart and separate from the E-type core, so when the high-voltage coil is assembled into the E-type core, the It is possible to obtain the effect that the high-voltage coil does not cause damage to both legs and the middle leg of the molded iron core.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing one embodiment of this invention, Fig. 2 is a cross-sectional explanatory diagram showing each insulator in the transformer after assembly, and Fig. 3 is an exploded perspective view of a conventional insulating paper for a high-voltage transformer. . 10a, 10b...first insulator, 20a, 20
b...Second insulator, 30a, 30b...Third insulator, 40...Secondary coil, 50...E type iron core, 5
1... middle foot, 52, 53... leg.

Claims (1)

[Claims for Utility Model Registration] A pair of first insulators having a substantially U-shaped cross section that are connected to each other in a cylindrical shape and that cover and surround the middle leg of an E-shaped core, and a high-voltage coil that is connected to each other in a cylindrical shape and that are opposed to each other and have a substantially U-shaped cross section. a pair of second insulators having a substantially U-shaped cross section that covers and surrounds two sides from the outside; one side is connected in advance to a flange at one end of the first insulator; An insulator for a high-voltage transformer, comprising: a pair of third insulators having a substantially U-shaped cross section and covering the second insulator when inserted into the high-voltage coil.