JPH0419770Y2 - - Google Patents

Description

[Detailed description of the invention] [Overview of the field] This invention is a method for accurately assembling a magnetic core and a coil bobbin that constitute a transformer or a chiyoke coil.
Moreover, regarding the transformer with a holder that does not shift,
An L-shaped claw is provided at the bottom of the holder, and a groove is provided on one side of the bobbin flange. Each holder engages a protrusion and a punched hole. During assembly, the holder's claw is inserted into the groove of the bobbin flange, and the bobbin flange is impregnated with resin. This invention relates to a structure of a transformer that prevents the bobbin from tilting during the process of fixing the core and bobbin by molding.

[Contents and problems of conventional technology]

Conventionally, this type of transformer does not have claws or grooves where the holder and coil bobbin engage, so when the magnetic core, coil bobbin, and holder were assembled, the combination of the holder and bobbin was not perfect, and the bobbin was tilted with respect to the core. There was a drawback that the pin pattern of the bobbin terminal and the holder terminal would be misaligned.

[Purpose of invention]

In order to eliminate these drawbacks, the present invention provides a claw part at the bottom of the holder that engages with the coil bobbin, and a groove part on one side of the bobbin collar to engage with the holder's claw, and combines the claw part and the groove part to integrate the holder with the bobbin. The purpose is to prevent the bobbin from tilting during the core bobbin fixing process.

[Structure of the idea]

In this invention, the holder has claws and the bobbin has grooves, and the holder and bobbin are assembled to fix the magnetic core. It is characterized by preventing tilting and providing a highly reliable transformer.

〔Example〕

Fig. 1 is a plan view of holder 1 constituting the transformer of the present invention, in which holders a and b are used in combination, a magnetic core is assembled into the coil bobbin, and then the coil bobbin and the magnetic core are assembled and fixed using holders a and b. It is something.

FIG. 2c is a front view of the holder of FIG. 1a, and FIG. 2d is a front view of the holder of FIG. 1b. FIG. 3e is a side view of FIG. 1a, and FIG. 3f is a side view of FIG. 1b. FIG. 4 is a diagram of a coil bobbin incorporating the holder shown in FIGS. 1 to 3.

At the bottom of the holder 1 made of a non-magnetic metal plate shown in FIGS. 1 to 3, an L-shaped claw portion 4 is provided facing toward the inside of the holder 1.
It has a structure in which it is fitted and fixed in a groove 12 of a bobbin collar 15 provided on the coil bobbin side shown in FIG.

The holder 1 of the present invention has a holding plate 2 for the magnetic core, a protrusion 3 for fitting with another holder 5, and a punch hole 8 for fitting with the protrusion 3 of the holder 1 in the holder 5. 1 is a leg 71 for fixing to the board;
72 is installed.

FIG. 5 shows a magnetic core 131,
132 is attached to the coil bobbin 10. FIG. Magnetic cores 131, 1 are attached to the coil bobbin 10 in FIG.
32 is assembled to the coil bobbin 10 using the holder 1 and the holder 5, and the L-shaped claw part 4 of the holder 1 is attached to the groove part 12 provided in the collar 15 of the coil bobbin made of an insulating material. The magnetic core, coil bobbin, and holder are assembled into one piece by fitting the protrusion 3 of the holder 1 into the hole 8 of the holder 5 to form a transformer. By using a transformer with such a structure, the magnetic core and bobbin will not come loose after the transformer is assembled using a holder like in the past, and the coil bobbin will not be installed and fixed at an angle to the magnetic core. Summer.

[Effect of idea]

As described above, according to the present invention, it has become possible to provide a transformer that has the advantage of preventing bobbin loosening.

Although the embodiment of the present invention has been explained using a transformer as an example, it is of course that the present invention can also be put to practical use in a chiyoke coil having a structure similar to that of the present invention.

[Brief explanation of the drawing]

FIGS. 1a and 1b are plan views of a pair of holders according to the present invention. FIGS. 2c and 2d are front views of a pair of holders according to the present invention. FIGS. 3e and 3f are side views of a pair of holders according to the present invention. FIG. 4 is a front view of a coil bobbin incorporating the holder according to the present invention. FIG. 5 is a diagram showing a transformer in which a magnetic core is incorporated into a coil bobbin and fixed using the holder of the present invention. 1...Holder body, 2...Magnetic core holding plate, 3...
Protrusion, 4... L-shaped claw, 71, 72... Board mounting leg, 8... Hole, 10... Coil bobbin,
11... Pin terminal, 12... Groove, 15... Tsuba, 1
31, 132...Magnetic core, 5...Other holder paired with the holder body.

Claims (1)

[Scope of utility model registration request] In a transformer using a holder that combines and fixes two holders made of metal for attaching a coil bobbin and a magnetic core, one holder has an L-shaped claw part at the bottom that fits into the groove of the coil bobbin collar, and each holder has an L-shaped claw part that fits into the groove of the coil bobbin collar. has protrusions and punch holes, and the coil bobbin has a groove that corresponds to the L-shaped claw of the holder.
A transformer constructed by fitting and fixing a coil bobbin, a magnetic core, and two holders by combining the L-shaped claws of the holders, the grooves of the bobbin, and the protrusions and punch holes of the holders.