JPS63299711A - Surge noise absorber - Google Patents

Abstract

PURPOSE:To obtain a noise absorber which can be also used as an external terminal section by penetrating a plurality of annular voltage dependent nonlinear resistor elements provided with electrodes on their inner and outer peripheral faces through a metal terminal, and further attaching two magnetic units so as to hold them. CONSTITUTION:A plurality of annular voltage dependent nonlinear resistor elements 7, 10 provided with electrodes 9, 8 on its inner and outer peripheral faces are prepared. Then are electrically connected through a metal terminal 13 to electrodes 9, 12 on its inner periphery, and also electrically connected by a metal strip 18 or the like to electrodes 8, 11 on its outer periphery. Further, annular magnetic units 19, 20 for suppressing noises are attached to the terminal 13 so as to hold the elements. Leads can be connected to both ends 14, 16 of the terminal 13. Thus, a high integration is performed, and its performance is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to surges that enter from power lines and signal lines (induced lightning, surges caused by switching on and off of inductive loads, etc.), as well as equipment malfunctions and televisions even though the voltage level is low. This product relates to surge noise absorbers for suppressing noise that causes noise in television receivers, radio receivers, etc., and is particularly related to surge noise absorbers used in the input/output terminals of power lines and signal lines. be.

Conventional technology Conventionally, as this type of surge noise absorber, the fourth
As shown in the figure, a disc-shaped voltage-dependent nonlinear resistor element or a ceramic dielectric element having voltage-dependent nonlinear resistance characteristics (hereinafter referred to as a voltage-dependent nonlinear element) is used. As shown in FIG.
The lead wire 2! L and 2b were used to insert and connect to the terminals and circuit sections of the power line input/output section and the signal line input/output section.

Further, as shown in FIG. 6, using the same disk-shaped voltage-dependent nonlinear element, lead wires 5a and 5b are connected to one electrostatic surface of the element body 4, and lead wires are connected to the other electrode surface. 6c, and then the lead wire 6a.

A surge noise absorber having a structure in which ferrite beads 6a and 6b are inserted into 6b and the entire element main body 4 is covered with an exterior resin (not shown in FIG. 6) is also used.

Problems to be Solved by the Invention This conventional configuration can only be used by newly attaching one or more parts to the terminal section, and is disadvantageous in terms of ease of attachment and cost (assembling costs, etc.). There was a problem that there was a whistle, which hindered the high integration of circuit boards. Further, there is a problem in that the inductance component caused by the lead wire has a negative effect on the surge noise suppression effect.

The present invention solves these problems, and aims to provide a small, high-performance surge noise absorber that is excellent in suppressing surge noise.

Means for Solving the Problem In order to solve this problem, the present invention provides an annular voltage-dependent nonlinear resistor element having electrodes on the inner and outer peripheral surfaces or a voltage-dependent nonlinear resistance characteristic. A ceramic dielectric element having a plurality of elements is used alone or in combination, a metal terminal is provided that penetrates the plurality of elements, and the inner peripheral electrodes of the plurality of elements are electrically connected to the metal terminal, and the inner peripheral electrode of the plurality of elements is electrically connected to the metal terminal. 2 which is annular in the form of sandwiching the above plurality of elements.
A structure in which the outer peripheral electrodes of the plurality of elements are all electrically connected, and both ends of the metal terminal have a structure for connecting lead wires. It is.

According to this configuration, a voltage-dependent nonlinear element (a voltage-dependent nonlinear resistor element or a ceramic dielectric element having voltage-dependent nonlinear resistance characteristics) that exhibits an excellent suppressing effect on surge noise, Since a plurality of metal terminals are inserted between the outer electrode and the metal terminal, which can be used as an external terminal part of an electronic device, surge noise can be suppressed. Furthermore, the inductance component due to the magnetic material is inserted in series with the input line, further improving the surge noise suppression effect. Further, since the element has a structure in which no lead wire is used, there is no adverse effect of the suppressing effect due to series inductance. Furthermore, since it has a structure that can be used as an input/output terminal section of electronic equipment without using any other parts, it is easy to install and is cost-effective (including assembly costs), allowing for high integration and small size. This will result in the improvement of

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 1a and 1b are a half-sectional view and a top view showing a surge noise absorber according to an embodiment of the present invention, and in FIG.
Reference numeral 7 denotes a voltage-dependent non-linear element made of, for example, a zinc oxide type voltage-dependent non-linear resistor element, which has an annular shape. 8 is an outer peripheral electrode provided on the outer peripheral surface of the element 7, and 9 is an inner peripheral electrode provided on the inner peripheral surface of the element 7. Reference numeral 10 denotes an annular voltage-dependent nonlinear element made of, for example, a ceramic dielectric element having voltage-dependent nonlinear resistance characteristics, and 11 and 12 denote an outer peripheral electrode and an inner peripheral electrode of this element 1o. Reference numeral 13 denotes a metal terminal passing through the center of the elements 7, 1o, and electrically connected to the inner peripheral electrode 9.12.

Reference numeral 14 designates one end of this metal terminal 13, which is hollow inside so that a banana chip terminal (not shown) can be inserted therein, as shown in the cross section, and has a hollow ridge cut on the outer peripheral surface. be. Reference numeral 16 denotes a resin part with a thread cut on the inner circumferential side, which can be screwed into the threaded part of one end 14 of the metal terminal 13, and has a lead wire ( (not shown) is wound and screwed onto this resin part 16 for use. Reference numeral 16 designates the other end of the metal terminal 13 that has a thread cut on the outer peripheral surface, and a lead wire (not shown) can be connected to this other end 16 and screwed with a metal nut 17. It has a structure. 18
is a connecting metal band that electrically connects the outer peripheral electrodes 8.11 of the elements 7, 1o. Also, 19 and 20
is the metal terminal 13 sandwiching the elements 7 and 1o.
It is a ferrite magnetic material that is attached to a ring and has an annular shape.

Figures 2a and b are top and front views showing the voltage-dependent nonlinear element constituting the surge noise absorber of the present invention, and Figure 3 is the electrical equivalent when using the surge noise absorber of the present invention. A circuit diagram is shown.

As described above, according to this embodiment, the connection metal band 18 can be connected to the electronic device! Connect the input line inside the electronic device to the end 16 of the metal terminal 13 with a metal nut 17, and connect the input line from the outside to the end 14 of the metal terminal 13 with a banana chip. If connected using terminals or resin parts 16, an electrical equivalent circuit as shown in Fig. 3 will be obtained, and the wire -GN
Voltage-dependent nonlinear elements 7 and 1o are inserted in parallel between D. Further, the inductance formed by the magnetic bodies 19 and 20 is inserted in the form shown in FIG. 3, so that surge noise can be suppressed.

Further, since the voltage-dependent nonlinear elements 7 and 10 have a structure in which no lead wire is used, there is no adverse effect of the suppressing effect due to series inductance.

Furthermore, since it has a structure that allows it to be used as an input/output terminal part of electronic equipment without using any other parts, it is superior in terms of ease of installation and cost (including assembly costs), and can be highly integrated. .

In the above embodiment, the case where the element 6 is a voltage-dependent non-linear resistor element and the element 9 is a ceramic dielectric element having a voltage-dependent non-linear resistance characteristic is explained. Alternatively, it may be configured with only one of the elements. Also, 3
It is also conceivable to combine more than one element.

Effects of the Invention As described above, according to the present invention, a voltage-dependent nonlinear element having electrodes on the inner and outer circumferential surfaces, which exhibits an excellent suppressing effect on surge noise, can be used as an external terminal section of an electronic device. A plurality of inductances are inserted between the metal terminal that can be used as is and the outer peripheral electrode, and the inductance made of the magnetic material is inserted in series with the input line, making it possible to suppress surge noise. Furthermore, since the voltage-dependent non-linear element has a structure in which no lead wire is used, there is no negative influence of the suppressing effect caused by the series inductance, 'W'. Furthermore, since it has a structure that can be used as an input/output terminal part of electronic equipment without using any other parts, it is easy to install and costs (including assembly costs), allowing for high integration and small size. This has the effect of increasing the

[Brief explanation of drawings]

FIGS. 1a and 1b are a half-sectional front view and a top view showing a surge noise absorber according to an embodiment of the present invention, and FIGS. 2a and 2b are voltage-dependent nonlinear structures constituting the surge noise absorber of the present invention. A top view and a front view showing the element, FIG. 3 is a diagram showing an electrical equivalent circuit when using the surge noise absorber of the present invention, and FIGS. 4 and 5 respectively show a conventional surge noise absorber. It is a diagram. 7.10...Voltage-dependent nonlinear element (voltage-dependent nonlinear resistor element or ceramic dielectric element having voltage-dependent nonlinear resistance characteristics), 8.11...Outer peripheral electrode , 9.12... Inner peripheral electrode, 13...
...Metal terminal, 14...One end, 16...
-...Resin part, 1e...Other end, 17.
...Metal nut, 18...Metal band for connection, 1
9.20...Magnetic material.

Claims (1)

[Claims] A ring-shaped voltage-dependent non-linear resistor element with electrodes provided on the inner and outer circumferential surfaces or a ceramic dielectric element having voltage-dependent non-linear resistance characteristics is used alone or in combination, and a metal penetrating these multiple elements is used. Provide a terminal, electrically connect the inner peripheral electrodes of the plurality of elements to the metal terminal, and attach two annular magnetic bodies to the metal terminal so as to sandwich the plurality of elements, Further, the surge noise absorber has a structure in which the outer peripheral electrodes of the plurality of elements are all electrically connected, and further, both ends of the metal terminal have a structure for connecting lead wires.