JPH0514492Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention provides a method suitable for mounting on a circuit board.
The present invention relates to a coil component having leads.

[Prior Art] A conventional toroidal coil component includes an annular magnetic core, a winding, a lead to which the terminal of the winding is connected,
It consists of these insulating coatings.

[Problems to be solved by the invention] By the way, since the magnetic core of the toroidal coil component is annular, it is difficult to handle during assembly. Also,
Connection of the winding terminal to the lead was also troublesome.

Therefore, an object of the present invention is to provide a coil component that is easy to manufacture even though it uses an annular magnetic core.

[Means for Solving the Problems] To achieve the above object, the present invention will be explained with reference to the reference numerals in the drawings showing the embodiments. A wire 7, a relay insulating board 2, first and second conductor layers 10 and 11 formed on the board 2, and first and second rod-shaped leads 3 and 4 extending parallel to each other. , a box-shaped insulating case 5, and an engagement groove 1 for engaging the board 2 near the entrance of the case 5.
8 and 19 are provided, and the board 2 is connected to the case 5.
The engagement grooves 18 and 19
The magnetic core 6 is disposed in the case 5 so that the annular-looking main surface of the magnetic core 6 is perpendicular to the main surface of the substrate 2, and the first and second leads are engaged with each other. 3 and 4 are connected to the first and second conductor layers 10 and 11 and are arranged to extend perpendicularly to the main surface of the substrate 2, and the windings 7
One end and the other end of the first and second conductor layers 1
This relates to a coil component characterized in that it is connected to terminals 0 and 11.

[Actions and Effects] This invention has the following actions and effects:

(a) Although the coil component uses an annular magnetic core 6 and the first and second leads 3 and 4 extend parallel to each other, the relay insulating board 2
Assembly work is facilitated by using.

(b) Since the substrate 2 also functions as a lid for the case 5, the winding 7 and the magnetic core 6 can be surrounded by an insulator with a simple configuration.

[Embodiment] Next, a toroidal coil component for noise removal according to an embodiment of the present invention will be described based on FIGS. 1 to 3. This coil component consists of a toroidal coil 1, an insulating substrate 2 for relay, a pair of leads 3 and 4, and an insulating case 5 made of synthetic resin.

The coil 1 is composed of a toroidal magnetic core 6 made of a ferrite core and a winding 7 made of enamelled wire wound around the toroidal magnetic core 6, and has a predetermined inductance.

The relay insulating board 2 is similar to a printed circuit board, and connects the terminals 8 and 9 of the winding 7 and the leads 3,
A pair of solderable conductor layers 1 for connecting 4 and 4.
It has 0,11. This insulating substrate 2 has a pair of V
Shape grooves 12, 13 are provided, in which the winding ends 8, 9 are locked. A pair of leads 3 and 4 are connected to a pair of through holes 14 and 15 provided in an insulating substrate 2.
It has bent portions 3a, 4a at its tips to prevent it from coming off from the through holes 14, 15.

The conductor layers 10 and 11 are arranged to surround the V-shaped grooves 12 and 13 and the through holes 14 and 15 and to connect them. Note that the planar patterns of the conductor layers 10 and 11 substantially match the patterns of the solders 16 and 17 in FIG. 3.

The terminals 8, 9 from which the enamel has been removed are press-fitted into the respective V-shaped grooves 12, 13, and are mechanically and electrically connected to the conductor layers 10, 11 by solders 16, 17. There is. Each lead 3,
4 is not only inserted into the through holes 14 and 15, but also mechanically and electrically connected to the conductor layers 10 and 11 by solders 16 and 17.

The case 5 is box-shaped with only one open surface out of six, and has a space for accommodating the coil 1 and the insulating substrate 2. Further, substrate engaging grooves 18 and 19 are provided on both sides of the case 5, and the insulating substrate 2
Both ends are fitted.

When assembling this coil part, coil 1
An insulating substrate 2 and a case 5 are prepared, the leads 3 and 4 are inserted into the through holes 14 and 15 of the insulating substrate 2, and the terminals 8 and 9 are press-fitted into the V-shaped grooves 12 and 13. Since the V-shaped grooves 12 and 13 have portions that are narrower than the diameters of the winding ends 8 and 9, the V-shaped grooves 12 and
By pushing down the terminals 8, 9 from the inlet of the V-shaped grooves 12, 1
It is temporarily fixed stably within 3. The terminals 8 and 9 may be inserted into the V-shaped grooves 12 and 13 before or after the leads 3 and 4 are attached to the insulating substrate 2.

Next, cream solder is applied to the conductor layers 10 and 11, melted, and solidified to form solder 16 and 17.
Terminals 8, 9 and leads 3, 4 are connected to conductor layers 10, 1.
1, and then the terminal cuts out unnecessary parts 8 and 9.

Next, coil 1, insulating substrate 2, and leads 3 and 4
Case 5 can be overturned into an assembly with. At this time, the insulating substrate 2 is pushed into the case 5 so as to close the opening of the case 5. There are protrusions 20 and 21 at the entrances of the board engaging grooves 18 and 19 of the case 5;
Since 0 and 21 have inclined surfaces, the insulating substrate 2
When pushed in, both sides of the case 5 are elastically deformed to expand, and the insulating substrate 2 enters the engagement grooves 18 and 19.

The coil component of this embodiment has the following advantages.

(1) Since the terminals 8 and 9 are inserted into the V-shaped grooves 12 and 13 instead of being tied to leads etc., the terminals 8 and 9 can be inserted into the V-shaped grooves 12 and 13 with less looseness. can be easily locked.
Moreover, the connection of the winding terminals 8 and 9 can be easily achieved by an automatic assembly device.

(2) Since the terminals 8, 9 and the leads 3, 4 are connected to the common connection conductor layers 10, 11 by the common solder 16, 17, highly reliable electrical and mechanical connection can be easily achieved. can be achieved.

(3) Since the case 5 is formed into a box shape and the insulating substrate 2 is attached like a lid of the case 5, the coil 1
can be easily constructed.

(4) Since the structure is such that the insulating substrate 2 is fitted into the substrate engaging grooves 18 and 19 of the case 5, the combination of the coil 2 and the insulating substrate 2 can be established simply by inserting the assembly of the coil 2 and the insulating substrate 2 into the case 5. . Therefore, case 5
can be easily installed.

[Modifications] The present invention is not limited to the above-described embodiments, but can be modified as follows, for example.

(1) The leads 3 and 4 may be constructed of a lead frame and may be flat leads.

(2) Instead of forming the coil 1 by winding a conducting wire around the magnetic core 6, it may be formed by printing a conductive paste on the magnetic core 6 and firing it. In this case, an internal lead is connected to the winding made of the printed conductor, and the internal lead is temporarily fixed in the V-shaped grooves 12 and 13 as the terminal of the coil.

(3) In place of the V-shaped grooves 12 and 13, through holes are provided in the conductor layers 10 and 11 of the insulating substrate 2, and the terminals 8 and 9 are inserted from one side to the other, and the terminals 8 and 9 are inserted at the edge of the through hole. , 9 may be bent for temporary fixation. Further, instead of the V-shaped grooves 12 and 13, L-shaped or hook-shaped grooves may be formed.

(4) Instead of using cream solder as a conductive bonding material, molten solder is used and this is applied to conductive layer 1.
0 and 11 to achieve electrical and mechanical connection by solders 16 and 17.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a coil component according to an embodiment of the present invention, cut along a line corresponding to the - line in FIG. 2, and FIG. The sectional view shown in FIG. 3 is a bottom view of the coil component of FIG. 1. 1... Coil, 2... Insulating board, 3, 4... Lead, 5... Case, 8, 9... Terminal, 10, 1
1... Conductor layer, 12, 13... V-shaped groove, 16,
17...Handa.

Claims (1)

[Claims for Utility Model Registration] An annular magnetic core 6, a winding 7 wound around the magnetic core 6, a relay insulating substrate 2, and first and second conductor layers 10 formed on the substrate 2. , 11, rod-shaped first and second leads 3, 4 extending parallel to each other, and a box-shaped insulating case 5, with an engagement for engaging the board 2 near the entrance of the case 5. Engagement grooves 18 and 19 are provided, the substrate 2 is engaged with the engagement grooves 18 and 19 so as to function as a lid of the case 5, and the annular-looking main surface of the magnetic core 6 is connected to the substrate 2.
The magnetic core 6 is arranged in the case 5 so as to be perpendicular to the main surface of the case 5, and the first and second leads 3 and 4 are connected to the first and second conductor layers 10 and 11. and is arranged to extend perpendicularly to the main surface of the substrate 2, and one end and the other end of the winding 7 are connected to the first and second windings.
A coil component characterized in that it is connected to conductor layers 10 and 11 of.