JPH0510344Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Field of Industrial Application) The present invention relates to a core for an inductance element used in an inductance element used in, for example, televisions, radios, tape recorders, and the like.

(Prior Art) Conventionally used cores for inductance elements include those shown in FIGS. 4a and 4b and 5a and 5b.

First, the inductance element core (hereinafter simply referred to as core) 1 shown in FIGS. A screw portion 6 is provided at the. Further, recesses 7, 7 are formed approximately in the center of the bottom portions 2a, 3a of the screwdriver grooves 2, 3 of the core 1 shown in the figure, respectively.

On the other hand, the core 8 shown in FIGS.
The difference is that reference numeral 9 is formed on the end surfaces 8a, 8a at a position spaced apart from the screwdriver grooves 2, 3 provided approximately in the center.

Incidentally, it is necessary to prepare several types of each of the above-mentioned cores depending on the purpose, size, etc. of the inductance element. However, all of these types of cores are extremely small, with external dimensions of several millimeters, and it is difficult to identify each core at a glance. In consideration of this, conventionally, the above-mentioned recesses have been provided to identify each core.

(Problems to be Solved by the Invention) The conventional core described above has the following drawbacks.

First, since the recesses 7, 7 shown in FIG. A distance H ₁ from the recess 7 formed at the bottom of the plate 3 must be secured in consideration of mechanical strength and the like. Therefore, there is a limit to the reduction of the core length A.

On the other hand, if the recesses 9, 9 are formed at the positions shown in FIG. 5, there will be no problem as described above, but now it is necessary to secure an area around the screwdriver groove that is sufficient to form the recesses. Must be. This means that the diameter B cannot be reduced.

In any case, when attempting to miniaturize the inductance element core itself, the conventional core identification recess becomes an obstacle, making it difficult to achieve this goal. Incidentally, the above problem cannot be ignored when the height and diameter are 3.5 mm or less.

Therefore, an object of the present invention is to provide a core for an inductance element that solves the above-mentioned problems, is easy to identify, and can be miniaturized.

[Structure of the invention] (Means for solving the problem) The structure of the present invention for solving the above-mentioned problems is that in the core for an inductance element having a screwdriver groove on the end face, the screwdriver A core identification recess is provided on the side wall surface of the groove.

(Function) The function of the present invention having the above configuration is that by providing an identification recess in the side wall surface of the screwdriver groove that can identify cores of different sizes, identification is ensured and miniaturization is achieved. That's what I do.

(Example) Hereinafter, a core for an inductance element according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a front view and a side view of a core for an inductance element (hereinafter simply referred to as core) of the present invention.

In the figure, the core 10 has a substantially cylindrical shape, and both end surfaces 10a and 10b have screwdriver grooves 1 into which the tips of a driver (not shown) are inserted.
1 and 11, a screw portion 13 is formed on the outer circumferential side surface 14, respectively, and a core identification recess 1 is formed on the side wall surface 11a of the screw driving groove 11, 11.
2 is provided.

FIGS. 2a and 2b are a front view and a side view, respectively, of the core 10 shown in FIG. 1.

In the same figure, the screw-driving grooves 11, 11 are formed approximately in the shape of a truncated quadrangular pyramid formed approximately at the center of both end surfaces 10a, 10b, respectively. One side wall surface 11a, 1 of this screwdriver groove 11, 11
Semi-cylindrical core identification recesses 12, 12 are formed in the central part of 1a from the opening end to the middle of the inner part.

By the way, the core identification recess may be one shown in FIGS. 3a and 3b. In FIG. 3, the same parts as those shown in FIGS. 1 and 2 a and b are given the same reference numerals, and the explanation thereof will be omitted.

First, the core identification recess 15 shown in FIG. 3a is
Although the core identification recess shown in FIG. 1 and its formation position are the same, the shape is different in this embodiment. In other words, while in the embodiment described above, the shape of the recess was a semi-cylindrical recess, the illustrated recess 15 is rectangular parallelepiped.

On the other hand, the core identification recess 16 shown in FIG.
This is an example in which a semi-cylindrical core identification recess is formed approximately at the center of a side wall surface 11b, which is different from the one side surface 11a, from the open end to the middle of the inner part thereof.

According to the inductance element core configured as described above, since the core identification recess is provided on the side wall surface of the screwdriver groove, it is necessary to provide extra space around the screwdriver groove. Moreover, it is not necessary to set the distance between the bottoms of the screwdriver grooves, unlike when a core identification recess is provided at the bottom of the groove. For example, diameter,
It is possible to provide cores with both lengths of about 3 mm or less. Furthermore, even though the core is extremely small, it can be easily identified. Therefore, it is possible not only to improve the efficiency of identification work and the like when using this core, but also to miniaturize various devices using this core.

It should be noted that the present invention is not limited to the illustrated embodiments described above, and various modifications can be made within the scope of the gist thereof.

[Effects of the Invention] According to the present invention described in detail above, it is possible to provide a core for an inductance element that is easy to identify and can achieve miniaturization.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of an inductance element core according to an embodiment of the present invention, and FIGS. 2a and 2b are front views of the inductance element core shown in FIG.
FIGS. 3A and 3B are perspective views showing other embodiments of the core identification recess, and FIGS. 4A and 5A and 5B are front views of conventional inductance element cores. , a side view. 10... Core for inductance element, 11...
Screw turning groove, 11a, 11b, 20a... side wall surface, 12, 15, 16, 17, 18... core identification recess.

Claims (1)

[Claims for Utility Model Registration] (1) An inductance element core having a screwdriver groove on its end face, characterized in that a core identification recess is provided on the side wall surface of the screwdriver groove. Core for element. (2) The core for an inductance element according to claim 1, wherein the core identification recess has a different shape depending on the size of the core. (3) The core for an inductance element according to claim 1, wherein the core identification recesses are provided at different positions depending on the size of the core.