JPS63299715A - 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 inner and outer peripheral faces through a plurality of metal terminals, and electrically connecting the electrodes. CONSTITUTION:A plurality of annular voltage dependent nonlinear resistor elements 6, 9 provided with electrodes 8, 7, and 11, 10 on its inner and outer peripheral faces are prepared. They are electrically connected through a metal terminal 12 to electrodes 8, 11 on its inner peripheries of the elements 6, 9, and also electrically connected by a metal strip 17 or the like to electrodes 7, 10 on its outer periphery. Further, leads can be connected to both the ends 13, 15 of the terminal 12. Thus, a surge noise absorber itself can be used as the outer terminal section of an electronic equipment to be highly integrated. Further, since no leads are connected to the elements 6, 9, the adverse influence of a series inductance is removed.

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 used to suppress 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. 4, this has a structure in which lead wires 2a and 2b are connected to opposing electrode (not shown) surfaces of the element main body 1, and the entire element main body 1 is covered with an exterior resin 3. The lead wires 2a and 2b were used by being inserted into the terminals and circuit sections of the power line input/output section and the signal line input/output section.

Further, as shown in FIG. 5, using the same disk-shaped voltage-dependent nonlinear element, lead wires 5a and 5b are connected to one electrode surface of the element body 4, and lead wires 5C are 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 nonlinear resistor element with electrodes provided on the inner and outer peripheral surfaces or a voltage-dependent nonlinear resistance characteristic. using ceramic dielectric elements singly or in combination, providing a metal terminal penetrating the plurality of elements, and electrically connecting the inner peripheral electrodes of the plurality of elements to the metal terminal, and The outer peripheral electrodes are all electrically connected, 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 a plurality of metal terminals are inserted between the outer peripheral electrode and the metal terminal that can be used as an external terminal part of an electronic device, surge noise can be suppressed.

In addition, since the element has a structure that does not use lead wires,
There is no adverse effect of the suppressing effect due to series inductance. Furthermore, it has a structure that allows it to be used as an input/output terminal part of electronic equipment without using any other parts.
Excellent in terms of ease of installation and cost (cost of assembly, etc.)
High integration is possible and miniaturization is possible.

Embodiment One embodiment of the present invention will be described below 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. It is a voltage-dependent nonlinear element consisting of two rings.

Reference numeral 7 designates an outer peripheral electrode provided on the outer peripheral surface of the element 6, and reference numeral 8 represents an inner peripheral electrode provided on the inner peripheral surface of the element 6. Reference numeral 9 denotes an annular voltage-dependent nonlinear element made of, for example, a ceramic dielectric element, and 1o and 11 denote an outer peripheral electrode and an inner peripheral electrode of this element 9. Reference numeral 12 denotes a metal terminal passing through the center of the element 6.9 and electrically connected to the inner peripheral electrode 8.11. Reference numeral 13 designates one end of this metal terminal 12, 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 thread cut on the outer peripheral surface. be. Reference numeral 14 denotes a resin part having a thread cut on the inner circumferential side, which can be screwed into the threaded part of one end 13 of the metal terminal 12;
A lead wire (not shown) is wound around the end portion 13 and the resin component 14 is screwed to the end portion 13 for use. Reference numeral 16 designates the other end of the metal terminal 12 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 the metal nut 16. It has a structure. 17 is the outer peripheral electrode 7.1 of the element 6.9.
This is a connecting metal band that electrically connects 0.

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 connecting metal band 17 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 16 of the metal terminal 12 with the metal nut 16. If the external input line is connected to the end 14 of the metal terminal 12 using a banana chip terminal or the resin part 14, an electrical equivalent circuit as shown in FIG. 3 will be obtained, and the line ~GH
A voltage-dependent nonlinear element 6.9 is inserted in parallel between D, and surge noise can be suppressed. Further, since the voltage-dependent nonlinear elements 6 and 9 do not use lead wires, there is no adverse effect of the suppressing effect due to series inductance. moreover.

It has a structure that allows it to be used as an input/output terminal part of electronic equipment without using any other parts, so it is excellent in terms of installation and cost (including assembly costs).

High integration is possible.

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. Still 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 surfaces that exhibits an excellent suppressing effect on surge noise can be used in an external terminal section of an electronic device. This means that a plurality of terminals are inserted between the metal terminal, which can be used as is, and the outer peripheral electrode, making it possible to suppress surge noise. However, since the voltage-dependent non-linear element does not use a lead wire, there is no adverse effect of the suppressing effect caused by the 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 the drawing]

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 FIG. 2a is a top view. b is a top view and a front view showing a voltage-dependent nonlinear element constituting the surge noise absorber of the present invention, and FIG. 3 is a diagram showing an electrical equivalent circuit when using the surge noise absorber of the present invention. FIGS. 4 and 5 are diagrams showing conventional surge noise absorbers, respectively. 6.9... Voltage dependent nonlinear element (voltage dependent nonlinear resistor element or ceramic dielectric element having voltage dependent nonlinear resistance characteristics), 7,10... Outer peripheral electrode , 8, 11... Inner peripheral electrode, 12...
...Metal terminal, 13...One end, 14...
・・Resin part, 16・・・・Other end, 16・
...Metal nut, 17...Metal band for connection. Name of agent: Patent attorney Toshio Nakao and one other person6.
9-m-element 7, fθ-outer R part 1 pole 8, / /-m-inner peripheral electrode/2-Ichikin 11 Shoko/, 3. /δ- Fanning part 14- Resin M part □ 1 Figure 16- Food, smoked nut 17
- Keishokutei (0L) Law Yobezuka

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. A terminal is provided, and the inner peripheral electrodes of the plurality of elements are electrically connected to the metal terminal, and the outer peripheral electrodes of the plurality of elements are all electrically connected, and the metal terminal is A surge noise absorber with a structure for connecting lead wires at both ends.