JPS63299712A - Surge noise absorber - Google Patents

Abstract

PURPOSE:To obtain a noise absorber which can be also used as an external terminal section by penetrating an annular voltage dependent nonlinear resistor element provided with electrodes on both end faces through a metal terminal, and further attaching two annular magnetic units so as to hold it. CONSTITUTION:An annular voltage dependent nonlinear resistor element 6 provided with electrodes 7, 8 on both end faces is prepared, and the electrode 7 is electrically connected by a first metal component 14 to a metal terminal 9 through the terminal 9 on its inner periphery. A second metal component 15 is so connected to the other electrode 8 as not to bring into contact with the terminal 9. Further, annular magnetic units 14, 15 are attached to the terminal 9 so as to hold the element 6. Leads can be connected to both the ends 10, 12 of the terminal 9. Thus, a surge noise absorber can be also used as the outer terminal of an electronic equipment to be highly integrated.

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
This case uses 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) as shown in the figure. As shown in FIG.
Lead wires 21L, 2 are connected to opposing electrode (not shown) surfaces of
b is connected, and the entire element body part 1 is covered with exterior resin 3, and the lead wires 2N and 2b are used to insert into the terminals and circuit parts of the power line input/output section and signal line input/output section. It was connected and used.

Further, as shown in FIG. 6, using the same disc-shaped voltage-dependent nonlinear element, lead wires sa and sb are connected to one electrode surface of the element body 4, and lead wire 6c is connected to the other electrode surface. There is also used a surge noise absorber having a structure 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 non-linear resistor element having electrodes on both end faces or a ceramic dielectric material having voltage-dependent non-linear resistance characteristics. A metal terminal is provided that penetrates the element, and a first metal component that is in contact with the electrode surface on one end face of the element is attached to the metal terminal, and the other end face of the element is electrically insulated from the metal terminal. A second metal part provided on the outer periphery of the metal terminal is connected in a manner such that the annular magnetic body is attached to the first metal terminal. Two metal terminals are attached so as to be located on the outside of the second metal component, and both ends of the metal terminals have 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, This means that it is inserted between a metal terminal that can be used as is as an external terminal part of an electronic device and a second metal component. Furthermore, since the inductance component due to the magnetic material is not inserted in series with the input line, the surge noise suppression effect is further improved.

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.

1A and 1B are a half-sectional front view and a bottom view showing a surge noise absorber according to an embodiment of the present invention. In FIG. It is a resistor element or a ceramic dielectric element (voltage-dependent non-linear element) having voltage-dependent non-linear resistance characteristics, and 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
1o is a metal terminal passing through the center of the element 6, and 1o is one end of this metal terminal 9. As shown in the cross section, the inside is opened so that a banana chip terminal (not shown) can be inserted. It is hollow and has threads cut on the outer peripheral surface. 1
Reference numeral 1 denotes a first resin part having a thread cut on the inner circumferential surface side, which can be screwed into the threaded part of one end 1o of the metal terminal 9, and the end 1o. It is used by winding a lead wire (not shown) around it and screwing it onto the first resin part 11. Reference numeral 12 designates the other end of the metal terminal 9 that has a thread cut on the outer peripheral surface, and a lead wire (not shown) can be connected to this other end 12 and screwed with a metal nut 13. -The structure is as follows. Reference numeral 14 denotes a first electrode 7 electrically connected to the electrode 7 on one end surface of the element 6.
It is a metal part that is attached to the metal terminal 9 by screwing or the like and is electrically connected thereto. Reference numeral 15 denotes a second metal component electrically connected to the electrode 8 on the other end surface of the element 6, and the metal terminal 9 is a cylindrical second resin component attached to the outer periphery of the metal terminal 9. It is electrically insulated by 1e. 17 and 18 are the first. It is a magnetic material such as a ferrite magnetic material attached to the metal terminal 9 so as to be located outside the second metal part 14,15.

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 second metal component 16
Connect the input line inside the electronic device to the GND of the casing of the electronic device, etc., and connect the input line inside the electronic device to the end 12 of the metal terminal 9 using the metal nut 13.
If you connect the external input line to the end 10 of the metal terminal 9 with a banana chip terminal or the first resin part 11, an electrical equivalent circuit as shown in FIG. A voltage-dependent nonlinear element 6 will be inserted between -GND. Also, the inductance due to the magnetic bodies 17 and 18 will be inserted in the form shown in Figure 3,
Surge noise can be suppressed. Further, since the voltage-dependent non-linear element e has a structure in which no lead wire is used, there is no adverse effect of the suppressing effect due to the series inductance. Since the inductance made of the magnetic material is inserted in series with the input line, the surge noise suppression effect is further improved. Furthermore, since it has a structure that allows it to be used as an input/output terminal part of electronic devices without using any other parts, it is easy to install and can be directly assembled in cost (costs, etc.), and high integration is possible. .

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. Since the inductance made of the magnetic material is not inserted in series with the input line, surge noise can be suppressed. 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. moreover,
Since it has a structure that can be used as an input/output terminal part of electronic equipment without using other parts, it is excellent in terms of installation and cost (including assembly costs), and allows for high integration and miniaturization. The effect of being able to achieve this goal is obtained.

[Brief explanation of drawings]

FIGS. 1a and 1b are a half-sectional front view and a bottom 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 6 respectively show a conventional surge noise absorber. It is a diagram. 6...Voltage dependent nonlinear element (voltage dependent nonlinear resistor element or ceramic dielectric element having voltage dependent nonlinear resistance characteristics), 7.8... Electrode on end surface , 9... Metal terminal, 10... One end, 11... First resin part, 12...
...Other end, 13...Metal nut, 1
4...First metal part, 15...Second metal part, 16...Second resin part,
17.18...Magnetic material. Name of agent: Patent attorney Toshio Nakao and one other person
Re Nw&
The end of the ward
Mound

Claims (1)

[Claims] A metal terminal is provided that penetrates 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, and this metal terminal is connected to one end face of the element. A first metal part in contact with the electrode surface is attached, and a second metal part provided on the outer periphery of the metal terminal is connected to the other end surface of the element in a manner that is electrically insulated from the metal terminal. , and two annular magnetic bodies are attached to the metal terminal so as to be located outside the first and second metal parts, and both ends of the metal terminal have a structure for connecting a lead wire. Surge noise absorber configured as follows.