JPH1187151A - Coil bobbin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce space for arranging a coil bobbin, by forming a terminal block part with a shape for allowing recessed, and projecting parts to be engaged each other at the symmetrical positions of both side edges of a collar part. SOLUTION: A coil bobbin 13 has a cylindrical coil winding part where an iron core insertion/passage part is formed at a center, and annular collars 22 and 23 (23 is omitted) are formed at both ends of the coil winding part. In both side edges of the collar part 22, a pair of terminal block parts 26 and 27 projects for forming corresponding to the position of each engagement part 24. The terminal block parts 26 and 27 are formed in a shape where one and the other of terminal block parts are set to recessed and projection parts 28 and 29, respectively, for arranging and at the same time can be engaged each other. Also, a hole part 34 for providing a pin 33 for connecting a coil winding is formed at coil winding maintenance parts 31 of each of the terminal block parts 26 and 27 and the base part of a cutout part 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a coil bobbin for winding a coil.

[0002]

2. Description of the Related Art Conventionally, for example, in electromagnetic equipment used in an inverter circuit for a discharge lamp, etc., FIGS.
As shown in the figure, the coil 1 is wound around the coil bobbin 2,
The coil bobbin 2 is inserted into the iron core 3.

The coil bobbin 2 has a coil winding portion 4 around which the coil 1 is wound, and flange portions 5 and 6 are formed at both ends of the coil winding portion 4. Terminal blocks 7 are formed on both side edges of one flange 5 protruding from both end surfaces of the iron core 3, and the terminal block 7 has a plurality of winding holding portions over the entire side edge of the flange 5. A portion 8 is formed so as to protrude, and a pin 9 is protruded from the base of each of the winding holding portions 8. The number of pins 9 required for connection of the coil 1 is used, and the pins 9 are implanted in any of the implantation holes 10 formed in the base of each winding holding portion 8.

The end of the winding of the coil 1 is
And wound around the coil bobbin 2 through the winding holding unit 8.

When mounting an electromagnetic device on a printed circuit board, the bottom surface from which the pins 9 protrude faces the printed circuit board, and the pins 9 are passed through the printed circuit board and soldered to conductive parts of the printed circuit board. Connecting.

[0006]

In the inverter circuit for two lamps, two electromagnetic devices are used for choke, and as shown in FIG. 3B, the two electromagnetic devices are arranged adjacent to each other on a printed circuit board. It is implemented on top.

However, in the conventional electromagnetic device, a plurality of winding holding portions 8 are formed so as to protrude over the entire side edges of the flange portion 5 even though there are the winding holding portions 8 which are not used. When the electromagnetic devices are arranged adjacent to each other, it is necessary to arrange the ends of the winding holding portions 8 so as to abut each other.
2 requires an installation space for the width A, which is obtained by adding a margin for a gap between butting ends of the winding holding portions 8.

In an inverter circuit for a discharge lamp, the ratio of electromagnetic devices on a printed circuit board is larger than that of other electric components, and the size of the electromagnetic device increases as the number of electromagnetic devices increases. It is desired that the device can be arranged in a space-saving manner even when the device is used.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a coil bobbin that can be arranged in a space-saving manner when a plurality of coil bobbins are arranged adjacent to each other.

[0010]

According to the present invention, there is provided a coil bobbin comprising: a coil winding portion; flange portions formed at both ends of the coil winding portion; and windings disposed on both side edges of one of the flange portions. A connecting pin, and a terminal block portion in which one is formed in a symmetrical position on both side edges of the one flange portion so that one is a concave portion and the other is a convex portion so as to be able to fit into the concave and convex, and the pin is disposed. Is provided.

Since the terminal block is formed at a symmetrical position on both side edges of the flange so as to have a concave portion on one side and a convex portion on the other side so as to be able to be fitted into and out of each other, even when a plurality of coil bobbins are arranged adjacent to each other. In addition, the terminal blocks adjacent to each other can be arranged in a space-saving manner by fitting into and out of each other.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a bottom view of the electromagnetic device, and FIG. 2 is a side view of the electromagnetic device.

In the figure, reference numeral 11 denotes an electromagnetic device main body, which is provided with a coil 12, a coil bobbin 13, and an iron core 14.

The coil 12 is formed by winding a predetermined number of turns around an insulating coating on a coil bobbin 13.

The coil bobbin 13 is made of an insulating synthetic resin and is integrally formed. The coil bobbin 13 has a cylindrical coil winding portion 21 having a core insertion portion (not shown) formed at the center thereof. Annular flange portions 22 and 23 are formed at both ends of the portion 21, respectively.

A pair of engaging portions 24, 25 which are engaged with both end surfaces of the iron core 14, respectively, correspond to the positions of both side edges protruding from both end surfaces of the iron core 14, respectively. The projection is formed.

A pair of terminal block portions 26 and 27 are formed on both side edges of the one flange portion 22 so as to protrude in correspondence with the positions of the engagement portions 24, respectively. In each of the terminal block portions 26 and 27, one is disposed at a symmetrical position as a concave portion 28 and the other is disposed as a convex portion 29, and the concave portion 28 and the convex portion 29 are formed into a shape that allows the concave and convex fitting with each other. Is formed.

One terminal block 26 has a convex portion 29 in the center area.
Is formed, and a concave portion is formed at the tip corresponding to the position of the convex portion 29.
Three winding holding portions 31 having 30 are formed to project, and
Concave portions 28 are formed on both side regions, and cutout portions 32 where the coil holding portions 31 are not formed are formed corresponding to the positions of the concave portions 28.

The other terminal block 27 has convex portions 29 on both sides.
Is formed, and a concave portion is formed at the tip corresponding to the position of the convex portion 29.
A winding holding portion 31 having a protrusion 30 is formed, and a concave portion 28 is formed in the center region. Three notches 32 where the winding holding portion 31 is not formed corresponding to the position of the concave portion 28 are formed. Have been.

A conductive pin 33 for winding connection is provided at the base of each winding holding portion 31 and notch 32 of each terminal block 26, 27.
A hole 34 in which is disposed is formed. The pins 33 are provided in holes 34 at the base of each winding holding unit 31.

Then, the end of the winding of the coil 12 wound around the coil bobbin 13 is entangled with the pin through the concave portion 30 of the winding holding portion 31 and is connected by soldering.

The iron core 14 has a pair of E-shaped iron cores 41. Each of the E-shaped iron cores 41 has a base 42 which is engaged with an end face of the coil bobbin 13. A central leg core (not shown) that is engaged with the core insertion portion is formed to project, and a pair of side leg cores 43 that are engaged with both sides of the coil bobbin 13 from both sides of the base 42 are formed to project. .

An insulating tape 44 such as a vinyl tape is adhered around the iron core 14.

Next, the operation of the present embodiment will be described.

For example, as shown in FIG. 3 (a), when two electromagnetic equipment main bodies 11 are used for choke in an inverter circuit for two lamps of a lighting device, these two electromagnetic equipment main bodies 11 are adjacent to each other. Mount on a printed circuit board.

At this time, the terminal block 26 of the coil bobbin 13 of the one electromagnetic device main body 11 and the terminal block 27 of the coil bobbin 13 of the other electromagnetic device main body 11 are arranged so as to be combined. That is, while combining the convex portion 29 of the one terminal block portion 26 and the concave portion 28 of the other terminal block portion 27, the concave portion 28 of the one terminal block portion 26 and the convex portion of the other terminal block portion 27 are combined. 29, and are combined so that the adjacent terminal block portions 26 and 27 are fitted to each other.

By combining the coil bobbins 13 of the adjacent electromagnetic device main body 11 in this manner, the width L of the flange portion 22 of one coil bobbin 13 is the same as the conventional one, but the width X overlaps due to the concave and convex fitting. Even if a margin of abutting gap between the ends of the adjacent coil bobbins 13 is added, an installation space of a width B smaller than the width A of the conventional installation space shown in FIG.

As described above, the terminal block portions 26 and 27 are formed at the symmetrical positions of both side edges of the flange portion 22 in such a shape that one of them is the concave portion 28 and the other is the convex portion 29 so as to be able to be fitted into and out of each other. Even when the coil bobbins 13 are arranged adjacent to each other, the adjacent terminal block portions 26 and 27 can be arranged in a space-saving manner by fitting in and out of each other.

Therefore, when the electromagnetic device main body 11 is used in an inverter circuit for two lights of a lighting fixture, the inverter device can be downsized.

[0031]

According to the coil bobbin of the present invention, the terminal block portion is formed at a symmetrical position on both side edges of the flange portion so as to have a concave portion on one side and a convex portion on the other side so as to be able to be fitted into and out of each other. Even if the coil bobbins of
Adjacent terminal blocks are fitted into each other so that they can be arranged in a space-saving manner.

[Brief description of the drawings]

FIG. 1 is a bottom view of an electromagnetic device having a coil bobbin according to an embodiment of the present invention.

FIG. 2 is a side view of the electromagnetic device.

FIG. 3A is a plan view showing a state where two electromagnetic devices are combined, and FIG. 3B is a plan view showing a state where two conventional electromagnetic devices are combined.

FIG. 4 is a bottom view of a conventional electromagnetic device.

FIG. 5 is a side view of a conventional electromagnetic device.

[Explanation of symbols]

 21 Coil winding part 22, 23 Flange part 26, 27 Terminal block part 28 Concave part 29 Convex part 33 pin

Claims (1)

[Claims] A coil winding portion; flange portions formed at both ends of the coil winding portion; winding connection pins provided on both side edges of one of the flange portions; A symmetrical position on both side edges of one of which is formed with a concave portion and a convex portion on the other side so as to be able to be fitted into and recessed from each other, and a terminal block portion on which the pin is disposed. Coil bobbin.