JPS63299713A - Surge noise absorber - Google Patents

Abstract

PURPOSE:To obtain a noise absorber which can be also used as an external terminal section as it is by penetrating a plurality of annular voltage dependent nonlinear resistor elements provided with electrodes on both end faces through a metal terminal, and connecting the electrodes through annular metal components. CONSTITUTION:A plurality of annular voltage dependent nonlinear resistor elements 6, 9 provided with electrodes 7, 8 and 10, 11 on both end faces are prepared. An annular metal component 18 is attached to the inner peripheries of the elements 6, 9 so as to penetrate through a metal terminal 12 and to be disposed adjacently to electrically connect the terminal 12 to the electrodes 7, 10. Further, another metal component 16 is attached to the terminal 12 through an insulator 17 to electrically connect the remaining electrodes 8, 11 of the elements. Then, leads can be connected to both ends 14, 19 of the terminal 12. Thus, a high integration is performed, and its surge suppressing effect can be enhanced.

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 television signals, even though the voltage level is low. It relates to surge noise absorbers for suppressing noise that causes noise in television receivers, radio receivers, etc., and in particular, it relates to surge noise absorbers used in the input/output terminals of power lines and signal lines. .

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.
It has a structure in which the entire element body part 1 is covered with an exterior resin 3, and the lead wires 21L and 2b are used to insert and connect to the terminals and circuit parts of the power line input/output section and signal line input/output section. It has been used for many years.

Still, as shown in FIG. 6, using the same disk-shaped voltage-dependent nonlinear element, lead wires 6&, sb are connected to one electrode surface of the element body 4, and lead wires 6C are connected to the other electrode surface. A surge noise absorber is also used in which the element main body 4 is entirely covered with an exterior resin (not shown in FIG. 6).

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 in that it 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 both end faces or a ceramic having voltage-dependent nonlinear resistance characteristics.

dielectric elements are used alone or in combination, metal terminals are provided that are electrically connected to electrodes on one end face of each of these two elements and that penetrate through these elements, and that each of the two elements A second metal part provided on the outer periphery of the metal terminal between the two elements is connected to the electrode on the other end surface in a manner that is electrically insulated from the metal terminal, and further, The structure has a structure for connecting lead wires.

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, Two metal terminals are inserted between the metal component and the metal terminal, which can be used as an external terminal part of an electronic device, so that surge noise can be suppressed.

Further, since the structure does not use lead wires for the two elements, 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 section of electronic equipment without cutting into other parts, it is superior in terms of ease of installation and cost (including assembly costs), and allows for high integration. This allows for miniaturization.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. 6 Figures 1 (&) and (b) are a half-sectional front view and a top view showing a surge noise absorber according to an example of the present invention. and
In FIG. 1, reference numeral 6 denotes a voltage-dependent nonlinear element made of, for example, a zinc oxide type voltage-dependent nonlinear resistor element, which has an annular shape. 7 is an electrode provided on one end surface of the element 6, and 8 is an electrode provided on the other end surface of the element 6. 9 is an annular voltage-dependent non-linear element made of a ceramic dielectric element having voltage-dependent non-linear resistance characteristics, and 1° and 11 are electrodes provided on one end surface and the other end surface of this element 9. It shows. Reference numeral 12 denotes a metal terminal passing through the center of the element 6.9, and the connecting arm 13 is electrically connected to the electrode 7 on one end surface of the element e. 14 is one end of this metal terminal 12;
As shown in the cross section, the inside is hollow so that a banana chip terminal (not shown) can be inserted therein, and a thread is cut on the outer peripheral surface. Reference numeral 15 denotes a first resin part having a thread cut on the inner circumferential surface, which can be screwed into the threaded part of one end 14 of the metal terminal 12. It is used by winding a lead wire (not shown) and screwing it onto the first resin part 16. 1
Reference numeral 6 denotes a ring-shaped metal ring provided on the outer periphery of the metal terminal 12 between the elements 6 and 9 and electrically connected to the electrode 8 on the other end surface of the element 6 and the electrode 11 on the other end surface of the element 9. The metal terminal 12 is electrically insulated from the metal terminal 12 by a cylindrical second resin part 17 attached to the outer periphery of the metal terminal 12. A metal nut 18 is electrically connected to the electrode 10 on one end surface of the element 9, and is attached to the metal terminal 12 by screwing or the like and is electrically and mechanically connected thereto. Reference numeral 19 denotes the other end of the metal terminal 12 having a thread cut on the outer peripheral surface;
It has a structure in which a lead wire (not shown) can be connected to and screwed with a metal nut 20.

Figures 2 (&) and (b) are top and front views showing the voltage body dependent non-linear element constituting the surge noise absorber of the present invention, and Figure 3 is a diagram showing the voltage body dependent nonlinear element constituting the surge noise absorber of the present invention. The diagram shows the electrical equivalent circuit diagram.

As described above, according to this embodiment, the metal component 16 is connected to the GND of the casing of the electronic device, etc., and the input line inside the electronic device is connected to the end 19 of the metal terminal 12 using the metal nano) 20. If the input line from the outside is connected to the end 14 of the metal terminal 12 using a banana chip terminal or the first resin part 15, an electrical equivalent circuit as shown in FIG. 3 will be obtained, and the line -
Voltage-dependent nonlinear elements 6 and 9 are inserted in parallel between GND, and surge noise can be suppressed. still,
Since the voltage-dependent non-linear element 6.9 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 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. Further, the electrode 7 on one end surface of the element 6 and the metal terminal 12 are electrically connected by the connecting arm 13 provided integrally with the metal terminal 12; The electrical connection may be made using a separate metal nut that is screwed into the element 9.
The electrical connection between the electrode 1o on one end surface of the metal terminal 12 and the metal terminal 12 may be made by a connecting arm provided integrally with the metal terminal 12.

Effects of the Invention As described above, according to the present invention, a voltage-dependent nonlinear element having electrodes on both end faces, which exhibits an excellent suppressing effect on surge noise, can be used as a metal terminal that can be used as an external terminal part of an electronic device. This means that two pieces are inserted between the metal parts and the metal parts, and it is 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 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 has the effect of increasing the

[Brief explanation of drawings]

FIGS. 1(a) and 1(kl) are a half-sectional front view and a top view showing a surge noise absorber according to an embodiment of the present invention, and FIG.
Figures (a) and (b) are a top view and a front view showing a voltage-dependent nonlinear element constituting the surge noise absorber of the present invention,
FIG. 3 is a diagram showing an electrical equivalent circuit when the surge noise absorber of the present invention is used, and FIGS. 4 and 5 are diagrams each showing a conventional surge noise absorber. 6... Voltage-dependent non-linear element (voltage-dependent non-linear resistor element or ceramic dielectric element having voltage-dependent non-linear resistance characteristics), 7, 8, 10° 11...
... End face electrode, 12... Metal terminal, 13...
...Connection arm, 14...One end, 1
6...First resin part, 16...Metal part, 17...Second resin part, 18.
...metal nut, 19...other end, 20...metal nut. Name of agent: Patent attorney Toshio Nakao and 1 other person
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Claims (1)

[Claims] An annular voltage-dependent non-linear resistor element having electrodes on both end faces or a ceramic dielectric element having voltage-dependent non-linear resistance characteristics may be used alone or in combination, and an electrode on one end face of each of these two elements may be used. A metal terminal is provided that is electrically connected to the metal terminal and penetrates through these elements, and the electrode of the other end face of each of the two elements is provided with a metal terminal that is electrically insulated from the metal terminal. A surge noise absorber configured to connect metal parts provided on the outer periphery of the metal terminal between elements, and further have a structure for connecting lead wires at both ends of the metal terminal.