JP3536575B2 - Coil parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil component used for a noise filter or the like.

[0002]

2. Description of the Related Art FIGS.
4 will be described.

First, according to FIGS. 22 (a), 22 (b) and 22 (c), a second solenoid coiled in a circular solenoid shape is placed on a first winding 1 wound in a circular solenoid shape. One set of coil parts constituted by the windings 2, 3 is the first,
An adhesive for preventing rotation between the second windings 1 and 2. Here, FIGS. 22 (a), (b), and (c) show a perspective view, a front view, and a cross-sectional view, respectively.

FIGS. 23 (a) and 23 (b) are an exploded perspective view and a perspective view, respectively, of a coil component obtained by developing the above-mentioned coil component. Referring to FIG.
A film 4 formed into a cylindrical shape for insulation is inserted into a combination of the windings 1 and 2, and a magnetic core 6 insulated by a tape 5 is inserted to form a coil component.
Reference numeral 7 denotes an adhesive for preventing a set of coils including the first winding 1 and the second winding 2 from rotating.

FIGS. 24 (a) and 24 (b) correspond to FIGS.
3A and 3B show an exploded perspective view and a perspective view, respectively, of a coil component in which the third coil component is inserted into a case. In the figure, the coil component 8 is inserted into a case 9 and reference numeral 10 is an adhesive for preventing the coil component 8 from falling off the case 9.

[0006]

However, in the constructions shown in FIGS. 22A to 22C, the first winding 1 and the second winding 2 constituting one set of coil parts are both circular. For this reason, the windings are rotated and the winding draw-out position is not determined. Therefore, a method of fixing the winding draw-out position with the adhesive 3 is required, which causes an increase in cost and a complicated operation.

When the magnetic core 6 is inserted into the first and second windings 1 and 2 to form a coil component, the first and second windings are required.
Insulation between the windings 1 and 2 and the magnetic core 6 is necessary. However, if the insulating material is thick, the winding diameter of the first and second windings 1 and 2 becomes large and the wire length becomes long. Causes an increase in temperature during energization. Therefore, conventionally, a thin film 4 such as a polyethylene film is provided in the first and second windings 1 and 2.
Is inserted into a cylindrical shape, and a tape 5 is wound around the magnetic core 6. This complicates the work,
Automation of the process was not possible. Further, the space between the first winding 1 and the second winding 2 is fixed by an adhesive 3. However, since the whole set of the windings 1 and 2 rotates with respect to the magnetic core 6, In order to prevent this, it was necessary to use the adhesive 7.

Further, when the coil component 8 is inserted into the case 9, it is impossible to provide a fitting structure because the tape 5 or the film 4 is wound around the magnetic core 6.
The work of positioning the coil component 8 with respect to the case 9 and the use of the adhesive 10 for preventing the coil component 8 from dropping off and fixing the position are required, resulting in an increase in cost and complexity of the operation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a coil component capable of preventing and fixing the rotation of a winding without using an adhesive and without complicating the operation.

[0010]

In order to solve the above-mentioned problems, a coil component according to the present invention comprises a first coil and a second coil which are wound in a circular solenoid shape and are positioned at the same position on at least a part of the first coil. An arc or a straight line portion of R larger than the winding diameter is provided so as to be in contact with the winding.

According to the above configuration, the rotation between the two coils is prevented by the arc portion, so that the pull-out positions of the two windings are fixed without using an adhesive or the like.

[0012]

DETAILED DESCRIPTION OF THE INVENTION The first aspect of the present invention is a first aspect of the present invention, in which a circular solenoid is wound and at least a part thereof is provided with an arc or a straight part having an R larger than a winding diameter .
And winding at least one wound on the first winding
An arc or straight section with R larger than the winding diameter
The second winding, and the first winding and the second winding.
Drawn out portion, and the R or R of the first winding
The straight portion and the R or straight portion of the second winding
It is those in contact, in which rotation between the two windings extended position of the two windings without using an adhesive or the like is fixed by being prevented by the arc or linear portion.

According to a second aspect of the present invention, the first winding and the second winding according to the first aspect are wound in a bale, and an arc having an R larger than the two windings. The rotation can be prevented even if the straight portion is slight. Further, by bringing the second winding into close contact with the first winding, the inside diameter of the winding is reduced, so that the wire length is shortened and the DC resistance is reduced, so that the temperature rise during energization is reduced.

According to a third aspect of the present invention, there is provided a bobbin inserted inside the first winding and the second winding according to the first aspect, and a magnetic core inserted inside the bobbin. And a bobbin provided on the bobbin with a plane parallel to the rotation direction in which the drawn portions of the two windings are simultaneously in contact with each other. The rotation position of the winding is fixed by preventing the rotation of the entire winding.

According to a fourth aspect of the present invention, there is provided a case in which a bobbin and a magnetic core are incorporated in the first and second windings according to the third aspect of the present invention. The fixing between the coil component and the case is performed without using the coil component, and the coil component can be easily and accurately positioned with respect to the case.

(Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1 is a perspective view, FIG. 2 is an exploded perspective view, FIG. 3 is a front view, and FIG. 4 is a sectional view. Further, FIG. 5 is a perspective view of a winding jig for winding a coil, and FIG. 6 is a view showing a state of winding. In the figure, reference numeral 11 denotes a first winding wound in a circular solenoid shape by a winding jig 12 and partially provided with an arc or straight portion 14 having an R larger than the winding diameter by a depression 13 of the winding jig 12. R 15 is wound in a circular solenoid shape by a winding jig 12 having a large diameter similarly to the first winding 11, and R is larger than the winding diameter by a depression 13 of the winding jig 12 at the same position as the first winding 11. a second winding arcs or straight portion 16 is provided with, pull out from each winding
The coil end of the drawn portion is drawn in a direction parallel to the center line of the winding. Then, the first winding 11 is inserted into the second winding 15 so that the respective arcs or straight portions 14 and 16 are in contact with each other, thereby forming a coil component.

Therefore, the above-mentioned arcs or straight portions 14, 16 can be used without using an adhesive and without complicating the operation.
The rotation between the two windings 11 and 15 is prevented, and the positions where the two windings 11 and 15 are pulled out are fixed.

Embodiment 2 Next, Embodiment 2 of the present invention will be described with reference to FIGS. 7 is a perspective view, and FIG. 8 is a front view. In the figure, as in the first embodiment, reference numeral 11 denotes a first winding wound in a circular solenoid shape, and reference numeral 15 denotes a second winding also wound in a circular solenoid shape thereon. The wires 11, 15 are provided with arcs or straight portions 14, 16 having an R larger than the winding diameter so as to contact each other. Each coil end is drawn out in a direction perpendicular to the winding center line.

Therefore, the above-mentioned arcs or straight portions 14 and 16 can be used without using an adhesive and without complicating the operation.
The rotation between the two windings 11 and 15 is prevented, and the positions where the two windings 11 and 15 are pulled out are fixed.

(Embodiment 3) Embodiment 3 of the present invention will be described with reference to FIGS. 9 is a perspective view, FIG. 10 is a front view, and FIG. 11 is a sectional view. FIG. 12 is a diagram showing a state of winding of the first winding, and FIG. 13 is a diagram showing a state of winding of the second winding.
In FIG. 12, reference numeral 11 denotes a first winding wound in a circular solenoid shape by a winding jig 12 and partially provided with an arc or straight portion 14 having an R larger than the winding diameter by a depression 13 of the winding jig 12. In FIG. 13, reference numeral 15 denotes a second winding which is wound on the first winding 11 in an overlapping manner, and the first winding 11 functions as a winding jig with respect to the second winding 15. As in the first winding 11, the second winding 15 is provided with an arc or straight portion 16 having an R larger than the winding diameter.

Accordingly, the above-mentioned arc or straight portion 14, 1
6, the rotation between the two windings 11, 15 is prevented. In addition, the use of only one winding jig 12 makes it possible to form a coil component, thereby facilitating the operation. Due to the bale winding and the spring back after the winding, the two windings 11 and 15 are brought into close contact with each other, and the effect of preventing rotation is increased.

Further, the second winding 15 is connected to the first winding 1.
When the coil is brought into close contact with the coil, the inner diameter of the winding becomes smaller, the wire length becomes shorter, and the DC resistance decreases. Therefore, even if the winding diameter of the inner first winding 11 is increased, an increase in the winding diameter of the outer second winding 15 is suppressed, so that it is possible to prevent an increase in temperature rise during energization. .

Embodiment 4 Embodiment 4 of the present invention will be described with reference to FIGS. FIG. 14 is an exploded perspective view, and FIG. 15 is the same perspective view. In the figure, reference numerals 11 and 15 denote first and second windings, 17
Is a bobbin made of a molded product inserted inside the combination of the first and second windings 11 and 15, and 18 is the bobbin 1
7 inserted into the inside of 7
The bobbin 17 has a shoulder width larger than that of the magnetic core 18 so that the bobbin 17 has a two-sided shape.
Pull out part of the locations are a plane parallel are provided in the direction of rotation in contact simultaneously.

Therefore, by using the bobbin 17, insulation between the winding 11 and the magnetic core 18 can be easily achieved.
2. Not only rotation between the two windings 11, 15 but also rotation of the entire set of coil parts according to claim 1 is prevented, and winding of the windings is prevented.
The dispensing position is fixed.

Further, by using the coil component according to the second aspect, the diameter of the inner first winding 11 is increased by using the bobbin 17 which is thicker than the conventional insulating film. Since the increase in the diameter of the outer second winding 15 is suppressed, it is possible to prevent an increase in temperature rise during energization.

(Fifth Embodiment) A fifth embodiment of the present invention will be described with reference to FIGS. FIG. 16 is an exploded perspective view, and FIG. 17 is the same perspective view. In the figure, reference numerals 11 and 15 denote first and second windings, 17
Is a bobbin inserted inside the coil component combining the first and second windings 11 and 15, 18 is an E-shaped butting type or EI shaped butting type inserted inside the bobbin 17 a magnetic core of (not shown), a plane 19 parallel to the direction of rotation pulling out part of the one side two locations simultaneously contacts along the magnetic core 18 is provided in the bobbin 17.

Therefore, by using the bobbin 17 of a molded product as in the fourth embodiment, insulation between the windings and the magnetic core can be easily performed. The rotation of the entire set of coil parts described in item 1 is also prevented, and the winding position is fixed.

Further, by using the coil component according to the second aspect, the winding diameter of the inner first winding 11 can be reduced by using the bobbin 17 which is a thicker molded product than the conventional insulating film. Even if it increases, an increase in the winding diameter of the outer second winding 15 is suppressed, so that it is possible to prevent an increase in temperature rise during energization.

(Sixth Embodiment) A sixth embodiment of the present invention will be described with reference to FIGS. FIG. 18 is an exploded perspective view, and FIG. 19 is the same perspective view. In the figure, reference numeral 20 denotes a coil component described in the fourth embodiment, and reference numeral 21 denotes a case having hooks 22 fitted to four corners of the bobbin 17 of the coil component 20.

Therefore, the coil component 2 can be formed without using an adhesive or the like.
0 can be fixed in the case 21, and the position where the coil component 20 and the winding are drawn out with respect to the case 21 is also fixed easily and accurately.

Seventh Embodiment A seventh embodiment of the present invention will be described with reference to FIGS. FIG. 20 is an exploded perspective view, and FIG. 21 is the same perspective view. In the figure, reference numeral 20 denotes the coil component of the fourth embodiment, 2
Reference numeral 1 denotes a case in which a hook 22 is provided and fitted in a direction in which the magnetic cores 18 are pressed against the bobbin 17 of the coil component 20 in the butting direction.

Therefore, as in the sixth embodiment, the coil component 20 can be fixed in the case 21 without using an adhesive or the like .
The draw-out position is also fixed easily and accurately, and the two magnetic cores 18 can be abutted by the hooks 22 for fitting.

[0033]

As described above, the coil component of the present invention is a first coil wound in a circular solenoid shape and provided at least partially with an arc or straight portion having an R larger than the winding diameter . line
And wound on the first winding and at least partially
The arc or straight part with R larger than the winding diameter
2 winding and the first winding and the second winding
R or straight section of the first winding
And the R or straight section of the second winding
With this configuration, the position where the winding is drawn out can be fixed without using an adhesive or the like.

Furthermore, in addition to the above-described winding method of the winding, by winding the two windings in a bale, the two windings are in close contact with each other, so that even a slight arc or straight portion can be prevented from rotating. Then, by bringing the second winding into close contact with the first winding, the inner diameter of the winding is reduced, so that the wire length is shortened and the DC resistance is reduced, so that the temperature rise during energization is reduced.

Next, a bobbin provided with a plane parallel to the rotational direction, which is inserted inside a coil component in which two windings are combined, and in which the drawn-out portions of the two windings are simultaneously contacted, a magnetic core inserted inside the bobbin With this configuration, not only rotation between the two windings but also rotation of the entire set of coil components is prevented, and the position where the windings are drawn out is fixed.

Further, by forming the coil component by the case fitted with the coil component, the coil component and the case can be easily and accurately fixed without using an adhesive. Further, the two cores can be butted by providing the fitting component in a direction in which the respective magnetic cores of the coil component are pressed in the butting direction.

[Brief description of the drawings]

FIG. 1 is a perspective view of a coil component according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a sectional view of the same.

FIG. 5 is a perspective view of a winding jig in the embodiment.

FIG. 6 is a diagram showing a state of the winding.

FIG. 7 is a perspective view of another embodiment.

FIG. 8 is a front view of the same.

FIG. 9 is a perspective view of another embodiment.

FIG. 10 is a front view of the same.

FIG. 11 is a sectional view of the same.

FIG. 12 is a diagram showing a state of the winding.

FIG. 13 is a diagram showing a state of the winding.

FIG. 14 is an exploded perspective view of another embodiment.

FIG. 15 is a perspective view of the same.

FIG. 16 is an exploded perspective view of another embodiment.

FIG. 17 is a perspective view of the same.

FIG. 18 is an exploded perspective view of the other embodiment.

FIG. 19 is a perspective view of the same.

FIG. 20 is an exploded perspective view of the other embodiment.

FIG. 21 is a perspective view of the same.

FIG. 22 (a) is a perspective view of a conventional coil component. (B) Front view (C) Sectional view

FIG. 23 (a) is an exploded perspective view of the conventional coil component. (B) The perspective view

FIG. 24 (a) is an exploded perspective view of the conventional coil component. (B) The perspective view

[Explanation of symbols]

11 First winding 12 winding jig 13 hollow 14 Arc or straight section with R larger than winding diameter 15 Second winding 16 Arc or straight section with R larger than winding diameter 17 Bobbin 18 core 19 plane 20 coil parts 21 cases 22 hook

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takeshi Ikemura 1006 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-59-144112 (JP, A) JP-A 8- 115819 (JP, A) Japanese Utility Model 2-127011 (JP, U) Utility model registration 3004417 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01F 17/00-27/42

Claims (4)

(57) [Claims] 1. A first winding wound in a circular solenoid shape and provided with an arc or a straight portion having at least a portion having an R larger than a winding diameter, and a first winding wound on the first winding.
At least a part of the arc or straight with R larger than the winding diameter
A second winding provided with a wire portion, and the first winding and the second winding
A lead portion drawn from the winding, and a first winding
And the R or straight portion of the second winding
And a coil component in which the components are brought into contact with each other . 2. The coil component according to claim 1, wherein the second winding is wound on the first winding. 3. A bobbin inserted inside the first winding and the second winding according to claim 1 and provided with a plane parallel to the rotation direction, wherein the drawing portions of the two windings come into contact at the same time. , A coil component comprising a magnetic core inserted inside the bobbin. 4. A coil component comprising a case fitted with the first and second windings according to claim 3, wherein a bobbin and a magnetic core are assembled.