JPH0451666U

JPH0451666U -

Info

Publication number: JPH0451666U
Application number: JP9414590U
Authority: JP
Priority date: 1990-09-05
Filing date: 1990-09-05
Publication date: 1992-04-30

Description

[Brief explanation of the drawing]

第１図ないし第４図はこの考案の一実施例を示
すもので、第１図は一部分を破断して示す斜視図
、第２図はコア部分の斜視図、第３図は導体にブ
スバーを使用する場合の斜視図、第４図は導体に
電線を使用する場合の斜視図、第５図および第６
図は他の実施例を示す正面図と側面図、第７図お
よび第８図は従来の電流検出器を示す斜視図、第
９図は説明用のグラフである。図において、１は強磁性体コア、２は磁気ギヤ
ツプ、３は感磁素子、４はプリント回路板、５は
絶縁ケース、６は導体、７は貫通孔である。なお
各図中同一符号は同一または相当部分を示す。 Figures 1 to 4 show an embodiment of this invention. Figure 1 is a partially cutaway perspective view, Figure 2 is a perspective view of the core, and Figure 3 shows a bus bar attached to a conductor. Figure 4 is a perspective view when using electric wire as a conductor, Figures 5 and 6 are perspective views when using electric wire as a conductor.
The drawings are a front view and a side view showing another embodiment, FIGS. 7 and 8 are perspective views showing a conventional current detector, and FIG. 9 is an explanatory graph. In the figure, 1 is a ferromagnetic core, 2 is a magnetic gap, 3 is a magnetic sensing element, 4 is a printed circuit board, 5 is an insulating case, 6 is a conductor, and 7 is a through hole. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A ferromagnetic core in which a magnetic gap is provided in a part of a magnetic path having a rotating shape, a magnetically sensitive element disposed within the magnetic gap, and a drive circuit that supplies a predetermined control current to the magnetically sensitive element. and a printed circuit board including an output circuit for processing an output signal of the magnetically sensitive element, and a printed circuit board that accommodates the core, the magnetically sensitive element, and the printed circuit board, and is arranged within the circumferential shape of the ferromagnetic core to be measured. In a device equipped with an insulating case having a through hole for passing a bus bar or electric wire through which a current flows, the core is formed in a circular or semicircular annular shape, and the through hole of the insulating case has a plane on which the bus bar comes into contact. have a semicircular shape,
A current detector characterized in that the printed circuit board is housed in the insulating case on the plane side of the through hole.