JPH037929Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the structure of a winding frame with pin terminals for current transformers that can be stably installed on a board, and in particular, a winding frame with pin terminals that allows UI type cores and LL type cores to be installed both vertically and horizontally. It is related to.

Fig. 1 shows a conventional winding frame with a pin terminal, which has flanges 2 and 3 on both end faces of a cylindrical winding core 1 made of an electrically insulating material, and a plurality of flanges at the lower ends of these flanges along opposite sides. Pin terminals 4, 4' are implanted, and the pin terminals 4, 4'
A protrusion 5 is provided on the surface between 4', through which the winding frame is fixed on the substrate. As shown in FIG. 2, the current transformer has a winding 6 on the winding core 1 of the winding frame, and the lead wire of the winding 6 is connected to the pin terminal 4,
4' and soldered, then the I-shaped core 7 is passed through the center hole of the winding core 1, the U-shaped core 8 is butted on the opposite side, and both cores are assembled with metal fittings 9 to complete the assembly.

A U-shaped core 8 is provided on the outer end surface of the flanges 2 and 3 of this winding frame.
As shown in FIG. 1, a groove 10 having a size that allows the U-shaped core to be inserted is provided in the upper part, so that the U-shaped core can be placed above. If the current transformer height is restricted,
It is possible to reduce the height of the U-shaped core or use a winding frame that allows the core to be installed horizontally parallel to the board, but this requires a different winding frame, and it requires a lot of money. Requires a mold.

The present invention relates to a winding frame that can eliminate the above-mentioned drawbacks, and provides a pin terminal winding frame that can be stably mounted on a board and that allows U-shaped cores of the same size to be installed both vertically and horizontally. to aim for.

In the present invention, flanges are provided on both end surfaces of a cylindrical winding core made of an insulating material, a plurality of pin terminals are implanted on the end surfaces of both flanges along the opposite sides, and a pin terminal is installed on the lower end surface of the flanges. The winding frame is provided with a protruding leg portion on the inside, and is characterized in that grooves into which the core is inserted are provided both vertically and horizontally on the outer end surfaces of both flanges.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 shows an embodiment of the present invention, and FIG. 4 shows a current transformer using the same. Referring to the figure, the winding frame consists of a cylindrical winding core 1 and flanges 2 and 3 provided at both ends thereof, and a plurality of pin terminals 4 and 4' are planted along the opposite sides at the bottom of both flanges. Moreover, protrusions are provided inside the pin terminals 4, 4 on the lower end surfaces of both flanges so that the winding frame can be fixed on the board.

The I-shaped core 7 is passed through the center hole of the winding core 1. Grooves 21 or 31 are formed in an intersecting manner on the outer end surfaces of the flanges 2 and 3 so that the core can be inserted in consideration of the mounting state of the peripheral circuit and the board.

When assembling a current transformer, first the winding 6 is placed on the winding core 1, and both ends thereof are connected to pin terminals. Next, pass the I-shaped core 7 through the center hole of the winding core 1, and
The character-shaped core 8 is fitted into the groove 21 or 31 and abutted against the I-shaped core, and both cores are assembled with a metal fitting 9.

As described above, according to the present invention, if you want to increase the board mounting density using the same core compared to the conventional method, you can install the core in the groove 21, and if there is a height restriction on the current transformer, The core can be installed in the groove 31, the current transformer can be manufactured using the same mold, the management is improved, and it is possible to provide a current transformer that is inexpensive and has desired characteristics.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an example of a conventional winding frame with a pin terminal, Fig. 2 is a front view of a current transformer using the conventional pin terminal winding frame shown in Fig. 1, and Fig. 3 is an embodiment of the present invention. A perspective view showing an example. FIG. 4 is a perspective view of a current transformer using the winding frame with pin terminals shown in FIG. 3. 1: Cylindrical winding core, 2, 3: Flange, 4, 4': Pin terminal, 5: Projecting leg, 6: Winding wire, 7: I- or U- or L-shaped core, 8: U- or L-shaped Core, 9: Metal fittings,
10, 21, 31: Groove.

Claims (1)

[Scope of utility model registration request] A cylindrical winding core made of an insulating material has flanges on both end surfaces, a plurality of pin terminals are implanted along the opposite sides at the lower end, and a U-shaped or L-shaped core is provided on the outer end surface of the flanges. A bobbin with a pin terminal characterized by having grooves in both the vertical and horizontal directions that are large enough to be inserted into the bobbin.