JPS6023938Y2 - Bobbin with pin terminal for transformer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bobbin for a transformer with a pin terminal.

Generally, a transformer is assembled by winding a wire around a hollow bobbin into which a core is inserted.

Particularly in the case of a small bobbin, there is one in which a pin terminal is integrally embedded in the bobbin, a winding terminal is connected to the pin terminal, and the pin terminal is inserted into a board or the like.

FIGS. 1 and 2 show a bobbin with an E-type core and a pin terminal provided thereon.

In the bobbin shown in FIG. 1, flanges 2 and 3 are provided on the upper and lower end surfaces of a rectangular cylindrical body 1 with the core axis oriented vertically. A step portion 31 is provided extending largely downward, and an inverted-shaped pin terminal 4 is embedded in the step portion 31 so as to protrude below and to the sides.

A wire is wound inside the collar 2゜3 using the square cylindrical body 1 as the core.
After connecting the terminals of the winding to the pin terminals 4 protruding to the side,
When the central magnetic poles 51 of the E-shaped cores 5 are fitted from above and below into the bobbin's middle hole 11 and abutted against each other, the back surface of the lower E-core 5 is fitted between the stepped portions 31 of the collar 3, and the side magnetic poles are attached to the bobbin. butted against each other on the outside.

The bobbin shown in Fig. 2 is a bobbin in which E-type fibers 5 are horizontally combined, and the lower edges of the flanges 2 provided on both end faces of the square cylindrical body 1 extend horizontally outward. A pin terminal 4 is planted on the horizontal plate 21.

The terminal of the winding wire applied to the bobbin is connected to the upper end of the pin terminal 4.

In Figures 1 and 2, each bobbin has pins, horizontal plates, etc. in the axial direction of the rectangular cylindrical body 1, which is the core of the winding wire, so it is difficult to attach a large number of bobbins to the shaft of the winding machine. ,
Furthermore, since the terminals of the winding and the terminals of the pins are oriented in different directions and are separated from each other, there is a problem that the soldering work cannot be carried out efficiently.

An object of the present invention is to provide a bobbin with a pin terminal for a transformer, which allows winding work and pin terminal soldering work to be performed efficiently.

Fig. 3 shows an embodiment of the bobbin according to the present invention, in which rectangular flanges 2 are provided on both end faces of a square cylindrical body 1 facing outward, and the opposing left and right sides of each flanges are directed to the outside of the flanges. This is extended and vertically cut with a depth approximately equal to the thickness of the vertical portion of the E-core to form stepped portions 22. This is a bobbin which is extended slightly longer than the length of the bobbin, and is further provided with a pin terminal 4 which extends through the stepped portion 22 in the longitudinal direction, that is, in the vertical direction, and has a protruding portion at the top and bottom.

In the present invention, since both end faces of the bobbin in the axial direction of the hollow hole 11 are flat, the bobbin can be installed in a winding machine side by side as shown in Fig. 4 and the bobbin can be continuously wound, thereby increasing the efficiency of the winding work. can be increased.

In addition, since the pin terminals 4 are aligned on the same surface and protrude, it is easy to tangle the terminals of the winding, and the soldering work requires only one dip into the solder bath, making it extremely suitable for automation of soldering.

[Brief explanation of the drawing]

Figures 1 and 2 show the conventional transformer bobbin.
FIG. 3 is a perspective view showing an embodiment of the present invention together with the E-type core, and FIG. 4 is a front view showing the juxtaposition of the bobbins of the present invention. In the figure, 1: square cylindrical body, 2, 3: tsuba, 22, 31:
Stepped part, 11: Medium hole, 4: Pin terminal, 5: Upper mold core.

Claims (1)

[Scope of utility model registration request] Extend both opposing left and right sides of a rectangular collar facing outward on both end faces of the square cylindrical body to the outside of the collar, and make a vertical cut thereto with a depth approximately equal to the thickness of the vertical part of the E core. A pin for a transformer comprising a stepped portion, the lower end of the stepped portion extending beyond the thickness of the lower end side magnetic pole of the E-shaped core into which the lower end is incorporated, and a pin terminal vertically penetrating the stepped portion. Bobbin with terminal.