JPH1167518A - Bobbin, inductor, and transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bobbin which can prevent lead sections from coming off the notch sections of partitions and an inductor and a transformer having stable qualities. SOLUTION: A bobbin 10 has flanges on both ends of its cylindrical body made of an insulator, notches 11 and 12 which guide the lead sections 3 of windings 4, and a plurality of partitions 1 and 2 which separate the windings 4 from each other. Each of the notch sections 11 and 12 of the bobbin 10 has a trapezoidal shape, the one side of which is perpendicular to its parallel two sides and the partitions 1 and 2 are arranged so that the short one of the parallel two sides of the sections 11 and 12 are positioned on the outer peripheries of the partitions 1 and 2, and the directions of the acute angle sections of the notches of the partitions 1 and 2 are arranged alternately. A transformer and an inductor use the bobbin 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to various power supply devices,
The present invention relates to a transformer and an inductor used for video equipment, audio equipment, industrial equipment, and the like, and particularly to a core suitable for use in a transformer and an inductor.

[0002]

2. Description of the Related Art Conventionally, in a transformer of this kind, in order to draw out a winding wound around a portion partitioned by a partition plate of a core, a cutting device for guiding a lead portion of the winding to the partition plate is used. It has a notch, but the shape of the notch is U
When the lead is loosened, it may come off from the notch due to the V-shape, V-shape, or square shape. There is a drawback that the wire breaks due to handling because of the floating.

[0003]

SUMMARY OF THE INVENTION In order to eliminate these drawbacks, the present invention provides a core, a stable inductor, and a transformer whose lead does not come off from a notch of a partition plate. is there.

[0004]

According to the present invention, the shape of the partition plate in the core is improved, and the lead portion of the winding is prevented from coming off from the cutout portion of the partition plate. I do.

That is, the present invention provides a winding core comprising an insulating material, a flange provided at both ends of a cylinder, a notch for guiding a lead portion of a winding, and a partition plate for dividing the winding. In the above, the notch is a winding core having a shape that holds a lead of a winding.

Further, the present invention is the above-mentioned core, wherein the notch has a trapezoidal shape, and two parallel short sides are located on the outer peripheral portion of the partition plate.

Further, according to the present invention, the notch has a trapezoidal shape in which one side is orthogonal to two parallel sides.
The above core is such that two parallel short sides are located at the outer peripheral portion of the partition plate.

Further, the present invention provides a winding core comprising a plurality of partition plates having the trapezoidal cutouts, wherein the cutouts are arranged such that the directions of the acute angles of the cutouts are alternated. It is.

Further, the present invention is an inductor using the above-mentioned core.

Further, the present invention is a transformer using the above-mentioned core.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram in which a winding for a transformer is applied to the core of the present invention. FIG. 1 (a) is a perspective view, and FIG. 1 (b) is FIG.
It is the elements on larger scale of (a).

As shown in FIG. 1, a plurality of flanges are provided at both ends of a tube made of an insulating material, and the windings 4 have cutouts 11 and 12 for guiding the lead portions 3 of the windings 4. The cutouts 11 and 12 of the core 10 provided with the partition plates 1 and 2 are trapezoids whose one side is orthogonal to the two parallel sides, and the short side of the two parallel sides is the partition plate. Is located on the outer periphery.

Further, the partition plates 1 and 2 are arranged such that the direction of the acute angle of the cutout portion of the partition plates 1 and 2 alternates with the partition plates 1 and 2 [FIG. 1 (b)].

In the present invention, as shown in FIG. 1, the notches 11 and 12 of the partition plates 1 and 2 have a shape in which the trapezoidal acute portions hold the lead portions 3.
The lead 3 does not come off from the cutouts 11 and 12 even if it is loose.

The core 10 was integrally formed by an injection molding machine. However, since one side of the trapezoid of the cutout is orthogonal to two parallel sides, the core could be removed.

[0017]

According to the present invention, it is possible to obtain a core and a stable inductor and transformer whose leads do not come off from the cutouts of the partition plate.

[Brief description of the drawings]

FIG. 1 is a diagram in which a winding for a transformer is applied to a winding core of the present invention. FIG. 1 (a) is a perspective view, and FIG. 1 (b) is a partially enlarged view of FIG. 1 (a).

[Description of Signs] 1 Partition plate 2 Partition plate (the direction of the acute angle of the notch portion is opposite to) 11 Notch portion 12 Notch portion (the direction of the acute angle is opposite) 3 Lead portion 4 Winding 10 windings core

Claims (6)

[Claims] 1. A winding core comprising an insulating material, provided with flanges at both ends of a cylinder, and provided with a partition plate having a notch for dividing a winding and guiding a lead of the winding. The core has a shape which holds a lead part of a winding. 2. The core according to claim 1, wherein the notch has a trapezoidal shape, and two parallel short sides are located on an outer peripheral portion of the partition plate. 3. A shape of the notch portion is a trapezoid in which one side is orthogonal to two parallel sides, and a short side of the two parallel sides is located on an outer peripheral portion of the partition plate. The core according to claim 1. 4. The core according to claim 3, further comprising a plurality of partition plates having the cutout portions, wherein the partition plates are arranged so that the directions of the acute angle portions of the cutout portions are alternated. . 5. An inductor using the core according to any one of claims 1 to 4. 6. A transformer using the core according to any one of claims 1 to 4.