JPH046262Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the internal structure of a noise filter device that suppresses electromagnetic noise and is mounted on a printed circuit board of an electronic device or the like.

[Conventional technology]

FIG. 2 is a diagram showing the structure of a conventional integrated circuit package type noise filter. An inductor is formed by winding a conductive wire 6 multiple times around a ring-shaped magnetic body 5 that has been subjected to insulation treatment.

The pedestal 3 is made of an insulating resin molded product, and has a rectangular outer periphery with a thick wall and a recess with a seat in the center to accommodate the inductor. A fixing protrusion 10 that is combined with 3 is provided in a protruding manner. The thick part of the pedestal 3 has round pin terminals 4 for external connection in the same arrangement as the integrated circuit package.
is planted, and the inductor conductor 6 after winding
Pass it through the groove 7 in the edge of the pedestal 3 and wind it around the winding part 8 of the round pin terminal 4 two or three times using a winding jig.
The excess conducting wire 6 is cut and then soldered to connect the conducting wire 6 wound around the core to the round pin terminal 4.

When the connection to each terminal 4 is completed, in order to prevent the conductor wire 6 of the inductor from vibrating and breaking, the inductor is fixed with silicone, epoxy resin, etc. in the central recess of the pedestal after the inductor is installed.

The lid 1 is made of an insulating resin molded product like the pedestal 3, and is provided with a space for accommodating the pedestal 3 and a fixing window 2 that fits into the fixing protrusion 10 of the pedestal 3.

[Problems that this invention attempts to solve]

In the conventional integrated circuit package type noise filter, when winding the conductor wire 6 wound around the magnetic material around the round pin terminal 4, the inductor wound around the magnetic material is not fixed, so the number of man-hours required for winding the wire is reduced. The problem was that it became more difficult in proportion to the number of terminals, and the work efficiency was poor. Furthermore, in order to prevent the conductor 6 wound around the inductor from vibrating and breaking,
After installing the inductor, the central recess of the pedestal 3 was filled with silicone resin, etc. to prevent the inductor from breaking, but the silicone resin, etc. may adhere to the solder surface, which may make soldering difficult and reduce reliability. There was a flaw in it.

[Means for Solving the Problems] In order to facilitate the assembly of an integrated circuit package type noise filter device, the present invention bends a protrusion formed by protruding at right angles to the longitudinal direction of the lead terminal piece. Then, the conductor wire of the inductor is crimped and fixed between the lead terminal piece, the conductor wire is welded to the lead terminal piece, and the caulked part provided on the lead terminal piece is attached to the round pin terminal protruding from the base. Next, perform the second half soldering that is fitted into the wrapped part,
By fixing the inductor using an inductor fixing rod protruding from the center space of the pedestal, this integrated assembly features shortening assembly work time and eliminating the need for a silicone resin fixing agent for fixing the magnetic material. A circuit package type noise filter is provided.

〔Example〕

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

FIG. 1 shows a perspective view of an integrated circuit package type noise filter according to the present invention. The lead terminal frame 12 is made of a highly elastic and highly conductive band-shaped metal plate made of stainless steel, iron, phosphor bronze, beryllium copper, brass, etc., and its surface is plated with solder.
Alternatively, the lead terminal frame 12 is tin-plated to improve solderability, and the shape of the lead terminal frame 12 is formed by precision punching.
The frame 12 is formed by photo-etching or the like, and the frame 12 is provided with guide holes 17 for sequentially feeding the metal plate as it is punched during precision punching. In such a structure, in order to connect the conducting wire 6 to the lead terminal piece 13, the protruding piece 14 is bent so as to overlap the lead terminal piece 13, the conducting wire 6 is sandwiched between the lead terminal piece 13 and the protruding piece 14, The head of the electric resistance welding machine is pressed against the protruding piece 14, and the primary current of the electric resistance welding machine is passed between the head and the lead terminal piece 13, the coating film of the conductive wire 6 is peeled off by heating, and the primary current is then increased. The conductive wire 6 is then welded to the lead terminal piece 13. After connecting the conductor 6 to the lead terminal piece 13 in this manner, the caulked portion 15 provided on the lead terminal piece 12 is fitted into the wrapped portion 8 following the round pin terminal 4 protruding from the base. The caulked portion is caulked, a temporary connection is made to the wrapped portion following the round pin terminal 4, the lead terminal piece is cut, and the soldering is performed afterward to connect the round pin terminal 4 and the caulked portion 15 provided on the lead terminal piece 12. Make the connection.

When the winding part 8 and the caulking part 15 are fitted, the inductor is fixed using an inductor fixing rod 16 protruding from the center of the space of the base 3.

[Effect of idea]

As explained above, according to the present invention, it is not necessary to wind the winding around the round pin terminal and fix the inductor using silicone resin, which were disadvantages of the conventional work, thereby simplifying the work. Also, an inexpensive integrated circuit package type noise filter can be provided.

[Brief explanation of the drawing]

FIG. 1 shows a perspective view of an integrated circuit package type noise filter according to the present invention, and A is an enlarged view showing the structure of a lead terminal piece. FIG. 2 is a diagram showing a conventional integrated circuit package type noise filter. 1... Lid body, 2... Fixing window, 3... Pedestal, 4
...Round pin terminal, 5...Magnetic material, 6...Conductor, 7
... Groove, 8 ... Winding part, 9 ... Fixing resin, 10
... Protrusion, 11 ... Inductor, 12 ... Lead terminal frame, 13 ... Lead terminal piece, 14 ...
... Projection piece, 15 ... Caulking part, 16 ... Inductor fixing rod, 17 ... Guide hole, 18 ... Round pin terminal insertion hole.

Claims (1)

[Scope of utility model registration request] The end of the winding 6 of the inductor 11, in which the conductor 6 is wound around a magnetic material, is crimped onto a protruding piece 14 that is bent and protruded at right angles from the tip of the lead terminal piece 13 that extends inward from both sides of the lead frame in a comb-like manner. After welding and fixing, the lead terminal piece 13 is cut leaving the caulked part 15, and the round pin terminal 4 is planted on the peripheral edge of the pedestal 3 molded with insulating resin. The caulking part 15 is fitted into the attaching part 8 and soldered, and the center hole of the inductor 11 is inserted into the inductor fixing rod 16 protruding from the center of the pedestal and fixed, and the fixing window 2 of the lid body 1 and the protrusion of the pedestal 3 are connected. Part 1
1. A noise filter device characterized in that the noise filter device is configured by fitting 0 and 0.