JPS6025876Y2 - switching power transformer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fastening fitting for a switching electric cadence, which is mainly constructed by incorporating a magnetic material such as an EE type or an EI type into a coil bobbin having a center hole. A stopper that holds a magnetic material.

The object of the present invention is to provide a switching capacitor with a structure that requires a small number of parts, can hold and fix both magnetic materials at once, and can be assembled easily and in a short time.

That is, in the present invention, an inner coil bobbin having a center hole and an outer coil bobbin having a center hole for storing the inner coil bobbin therein each have a base portion facing each other eccentrically with respect to each center hole at the bottom, and A columnar part of the magnetic material is inserted into the center hole of the coil bobbin to combine the upper and lower magnetic materials, and the U-shaped frame that covers the magnetic material from above is formed by a substantially U-shaped cut in the upper plate. A holding piece is provided, and a locking piece is punched out at an appropriate position on both sides of the plate, and the lower ends of the both sides of the plate are made to protrude downward by an appropriate length, and lock with the holding piece of the frame. This is a switching electrocadence characterized in that both magnetic bodies are elastically clamped and fixed between base parts by a piece.

An embodiment of the present invention is shown in FIG. 1, and its structure will be described below.

The frame body 1 is formed by bending a metal strip body into a U-shape.

The upper plate of the frame 1 is provided with a holding piece 2 formed by a substantially U-shaped cut, and locking pieces 3 are provided by punching out appropriate positions on both side plates 4 of the holding piece 2.

Furthermore, projecting pieces 5 are provided at the lower ends of both side plates 4, each projecting downward by an appropriate length.

Next, the switching voltage transformer according to the present invention is shown in FIG. 3, and will be described below with reference to the drawings.

FIG. 2 shows an exploded perspective view thereof.

In the figure, reference numeral 6 denotes an inner coil bobbin, which has a center hole 7, and a base portion 8 provided eccentrically with respect to the center hole 7 at its bottom.

Reference numeral 10 designates an outer coil bobbin, which has a center hole 11 into which the inner coil bobbin 6 is inserted, and has a base portion 12 at its bottom that is eccentric to the center hole 11.

Both base parts 8 and 12 have terminal pins 9, respectively.
゜13 is planted, and each end has a protrusion 1
4 are provided.

Reference numeral 15 denotes an E-shaped magnetic body, the columnar part 16 of which is inserted and fitted into the center hole 7 of the inner coil bobbin 6.

Reference numeral 17 denotes an I-type magnetic body, which is combined with the E-type magnetic body 15.

In the above-mentioned structure of the switching voltage cadence, the third
The assembly diagram is shown in the figure, and this will be briefly described.

First, the columnar part 16 of the E-shaped magnetic body 15 is inserted and fitted into the center hole 7 of the inner coil bobbin 6 housed in the outer coil bobbin 10, and then combined with the ■-shaped magnetic body 17.

In this state, the frame 1 shown in FIG.
7 is covered and pressed from above, and the locking pieces 3 of the frame 1 are pressed to become flat and fall down along the side surface of the E-shaped magnetic body 15.

The side plates 4 of the frame body 1 have a base portion 8,
The magnetic body 15 is inserted through a guide groove 19 formed by the 12 protrusions 14 and the side portions of the magnetic body 15 .

When the locking piece 3 of the frame 1 reaches the bottom of the E-shaped magnetic body 15,
At the same time that the locking piece 3 rises again and cannot be removed, the elasticity of the holding piece 2 acts to press the two magnetic bodies 15.17 together and fix the inner and outer coil bobbins 6.10.

Furthermore, the protruding piece 5 of the frame 1 has the function of being inserted into a printed circuit board and fixing the entire fastener by soldering or the like.

According to the present invention, the upper and lower magnetic bodies can be crimped and fixed all at once using the holding piece on the frame and the locking piece on the side thereof, making it easy to assemble the switching capacitor in a short time. done to.

Therefore, the present invention can reduce the number of parts and the number of assembly steps.

[Brief explanation of the drawing]

Figure 1.2 Three-dimensional explanatory diagram showing one embodiment of the present invention. Figure 2:
FIG. 3 is an exploded perspective view showing a switching capacitor according to the present invention; FIG. 3 is an assembled view of FIG. 2; and FIG. 4 is a partially enlarged cross-sectional view of FIGS. 2 and 3. 1... Frame body, 2... Presser piece, 3...
... Locking piece, 4 ... Side plate, 5 ... Projection piece.

Claims (1)

[Scope of utility model registration request] An inner coil bobbin having a center hole and an outer coil bobbin having a center hole for accommodating the inner coil bobbin therein each have base portions facing each other eccentrically with respect to each center hole at the bottom thereof, The upper and lower magnetic bodies are combined by inserting a columnar part of the magnetic body, and the U-shaped frame that covers the magnetic body from above is provided with a presser piece formed by a substantially U-shaped cut in the upper plate. In addition, punched locking pieces are provided at appropriate positions on both side plates, and the lower ends of the side plates are made to protrude downward by appropriate lengths, and the holding pieces and locking pieces of the frame are used to prevent both magnetic properties. A switching electric quadrant whose body is elastically clamped and fixed between base parts.