JP2591351Y2 - Inductor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an inductor such as a transformer and a choke coil used in an electronic device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, this type of transformer is made of a non-magnetic metal having a magnetic core 5 (hereinafter abbreviated as a core), a wound coil 3 and an elastic pressing claw portion 7. It was assembled by the U-shaped holder 6.

[0003]

In recent years, as the thickness has been reduced, the U-shaped holder has a pressing claw 7 in the pressing direction.
Is difficult to obtain elasticity. That is, as shown in FIG.
As for the c dimension of the pressing claw portion 7 of the holder 6, the length of the range in which the elasticity is not lost without exceeding the yield point is only about 1/10 of the a dimension of the holder 6. For example, assuming that the dimension a of the holder is 3 mm, the dimension c of the pressing claw 7 is only 0.2 mm.
0.3 mm. Therefore, in order to obtain a large elastic range, the dimension a must be increased, which hinders a reduction in thickness.

[0004] The present invention aims to eliminate these disadvantages,
An object of the present invention is to provide a low-height transformer and an inductor such as a choke coil by providing a projection on a side surface of a core and hanging the projection on the holder.

[0005]

According to the present invention, there is provided an inductor comprising a pair of cores and two holders for pressing and fixing the cores, wherein each of two opposite outer surfaces perpendicular to a joint surface of the pair of cores is provided. Provided with three sets of equally spaced protrusions,
This is an inductor having a structure in which a substantially diamond-shaped holder is incorporated in the projection.

[0006]

In the inductor according to the present invention, a protrusion is provided on the side surface of the core, and a holder having a substantially rhombic shape is hung on the protrusion, so that the holder can be easily hung on the core, and the height is low. High inductors such as transformers and choke coils are obtained.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below. FIG. 1 is a perspective view of an embodiment of the transformer of the present invention. This transformer comprises a core 1 having a projection 4, a holder 2, and a wound coil 3.

The core 1 is provided with three protrusions 4 on one side surface on both outer side surfaces perpendicular to the joining surface.
These projections 4 are arranged at equal intervals in such a structure that, when assembled into a transformer, they come into contact with the projections of the opposing cores to be joined at the joining surface.

As shown in FIG. 3, the holder is attached to the core by first applying a force to both ends of a substantially L-shaped plate-like holder 2 made of a non-magnetic metal having elasticity and deforming the holder. Put between the protrusions [state of (a)]. Next, the projection is hung on three protrusions while reducing the pressure [state (b)]. In such a state, the upper and lower cores are pressed and fixed by the force for the plate-shaped holder to straighten.

[0010] In this case, the height of the transformer is the core height +
Only the thickness of the holder is required (dimension in FIG. 2B), and there is no need to provide a clearance as in the conventional case (dimension in FIG. 5A).

Further, in the transformer of the present embodiment, in order to reduce the height of the transformer by the height of the holder, the upper and lower surfaces of the core protrusion are made lower than the back surface of the core by the thickness of the holder. It is also possible to use a low-profile transformer (Fig. 4).

The shape of the holder is not limited to a plate as in this embodiment, but may be a round bar, for example.

[0013]

As described above, according to the present invention, it is possible to provide an inductor such as a transformer and a choke coil having advantages such as low height and easy mounting of the holder.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a transformer of the present invention.

FIG. 2 is a front view showing a holder hanging portion of the transformer according to the embodiment of the present invention;

FIG. 3 is a front view showing a holder portion for explaining a holder hook of the embodiment of the transformer of the present invention. FIG. 3 (a)
FIG. 3B is a front view showing a state in which both ends of the holder are pressed and put between the protrusions, and FIG. 3B is a front view showing a state in which the holder is hung on the protrusions while reducing the pressure on both ends.

FIG. 4 is a front view showing a portion of a transformer according to another embodiment of the present invention, which is mounted on a holder;

FIG. 5 is a side view showing a portion where a conventional transformer is fitted into a holder.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Core of this invention 2 Holder of this invention 3 Winding coil 4 Projection 5 Conventional core 6 Conventional holder 7 Pressing claw part a Height of conventional transformer when holder is fitted in magnetic core b Holder on magnetic core The height of the transformer of the present invention when multiplied by c. The length within the range where the spring property of the pressing claw of the conventional holder is not lost.

Claims (1)

(57) [Scope of request for utility model registration] 1. An inductor comprising a pair of magnetic cores and two holders for pressing and fixing the magnetic cores, wherein three oppositely outer surfaces perpendicular to a joining surface of the pair of magnetic cores are provided at equal intervals. An inductor having a structure in which a set of protrusions is provided, and a substantially diamond-shaped holder is incorporated in the protrusions.