JPS63299716A - Surge noise absorber - Google Patents

Abstract

PURPOSE:To obtain a surge 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 its both end faces through a metal terminal, and attaching magnetic units so as to hold the elements. CONSTITUTION:A plurality of annular voltage dependent nonlinear resistor elements 7, 10 provided with electrodes 8, 9, and 11, 12 on both end faces are prepared. A metal terminal 13 is penetrated to the inner peripheries of these elements, and annular metal components 16, 20 are attached to electrically connect the terminal 13 to the electrodes 8, 11. Another metal component 18 is attached through an insulator 19 to the terminal 13 to electrically connect another electrodes 9, 12 of the elements. Further, surge noise suppressing annular magnetic units 17, 21 are attached so as to hold the elements 7, 10. Then, leads are connected to both ends 14, 22 of the terminal 13.

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

Still, as shown in FIG. 5, using the same disc-shaped voltage-dependent nonlinear element, lead wires 5a and sb are connected to one electrode surface of the element body 4, and lead wire 60 is connected to the other electrode surface. The surge noise absorber has a structure in which the lead wires ESA and CSB are connected to ferrite beads EA and EB, and the entire element 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.). Another problem was 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 block having voltage-dependent non-linear resistance characteristics. Dielectric elements are used alone or in combination, and 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 A metal part provided on the outer periphery of the metal terminal between the two elements is connected to the electrode on the end face in a manner that is electrically insulated from the metal terminal, and the two elements are connected to the metal terminal. Two annular magnetic bodies are attached in a sandwiched manner, and both ends of the metal terminal 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, Since it is inserted between a metal terminal and a metal component that 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 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 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 front view and a top view showing a surge noise absorber according to an embodiment of the present invention, and in FIG. A voltage-dependent nonlinear element consisting of a ring-shaped element.

8 is an electrode provided on one end surface of the element 7, and 9 is an electrode provided on the other end surface of the element 7. 1o is a ring-shaped voltage-dependent nonlinear element made of a ceramic dielectric element having voltage-dependent nonlinear resistance characteristics, and 11
and 12 indicate electrodes provided on one end surface and the other end surface of this element 9. 13 is the above element 7,1
A metal terminal passing through the central part of o, 14 is this metal terminal 1
One end of 3 is hollow so that a banana chip terminal (not shown) can be inserted therein, as shown in the cross section, 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 side, which can be screwed into the threaded part of one end 14 of the metal terminal 13. lead wire (not shown)
It is used by winding it and screwing it with the first resin part 16. 16 is a nut made of metal, □, and a magnetic material 1 such as a ring-shaped ferrite magnetic material is attached to the metal terminal 13.
7, it is attached to the metal terminal 13 by screwing or the like, and is electrically and mechanically connected thereto. Further, one surface of the metal nut 16 is electrically connected to the electrode 8 on one end surface of the element 7.

Reference numeral 18 denotes a ring-shaped metal terminal provided on the outer periphery of the metal terminal 13 between the elements 7 and 10 and electrically connected to the electrode 9 on the other end surface of the element 7 and the electrode 12 on the other end surface of the element 10. The metal terminal 13 is electrically insulated from the metal terminal 13 by a cylindrical second resin part 19 attached to the outer periphery of the metal terminal 13.

A metal NAND 20 is electrically connected to the electrode 11 on one end surface of the element 10, and is attached to the metal terminal 13 by screwing or the like, and is electrically and mechanically connected thereto. Reference numeral 21 denotes a magnetic body such as a ferrite magnetic body having an annular shape and inserted through the metal terminal 13 so as to be located outside the metal nut 2Q. Reference numeral 22 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 22 and screwed with a metal nut 23. It has a structure.

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 metal component 18 is connected to the GND of the cylindrical body of the electronic device, etc., and the input line inside the electronic device is connected to the end 22 of the metal terminal 13 using the metal napht 23. However, if an input line from the outside is connected to the end 14 of the metal terminal 13 using a banana chip terminal or the first resin component 11, an electrical equivalent circuit as shown in FIG. 3 is obtained, and the line -
Voltage-dependent nonlinear elements 7 and 10 are inserted in parallel 1j between GND. Furthermore, the inductance formed by the magnetic bodies 17 and 21 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.

Effects of the Invention As described above, according to the present invention, a voltage-dependent nonlinear element having electrodes on both end faces that exhibits an excellent suppressing effect on surge noise is one of the most suitable external terminals for electronic equipment! Two inductances are inserted between the usable metal terminal and the metal component, 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 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. 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 6 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), 8,9°11.12.
...End face electrode, 13...Metal terminal, 1
4... One end, 15... First resin part, 16.20.23... Metal nut, 17.21... Magnetic material, 18...Metal part, 19...Second resin part, 22.
...The other end. Figure 1 //, /2 - Electrode 13 of element to - Metal terminal /42? -g part tS--Kazuki Ruji sound p product 16.2θ, 23-11 all A ships included, 2 to 1'l, 21
--1. In the case of I, 9 types of throat, 18 pieces, 19 pieces of all A-made products, and 19 parts made of oil.

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 and passes through these elements, and the electrodes on the other end surfaces of the two elements are electrically insulated from the metal terminals. A metal component provided on the outer periphery of the metal terminal between them is connected, and two annular magnetic bodies are attached to the metal terminal so as to sandwich the two elements, and further, both ends of the metal terminal are connected. is a surge noise absorber configured with a structure for connecting lead wires.