JPS6242487Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a surge absorber that can suppress line-to-line surges and low voltage level noises that enter from power lines, signal lines, etc.

Voltage-dependent nonlinear resistance elements such as zinc oxide varistors have traditionally been used to protect electronic equipment from abnormal voltages such as those caused by induced lightning, but they do not cause noise in television receivers, radio receivers, etc. below the operating voltage. This has almost no effect, and the commonly used method is to insert a capacitor with a certain capacity or more in parallel.

Furthermore, since a voltage-dependent nonlinear resistance element alone is not sufficient for extinguishing contact sparks, similar configurations are used in which capacitors are connected in parallel.

However, in this configuration, the voltage-dependent non-linear resistance element and the capacitor are individually constructed and connected, which increases the installation space and the number of assembly steps. I needed to use it.

Therefore, as shown in Japanese Unexamined Patent Application Publication No. 56-54010, it has been considered to integrate a capacitor and a zinc oxide varistor by connecting them in parallel with lead wires, but the capacitor and the zinc oxide varistor are When doing so, it is necessary to perform complicated processing such as connecting one lead wire, bending it, and connecting it to the other lead wire, which is not easy to manufacture, and there is a big difference from combining the two as a finished product. It was something I didn't have.

The present invention aims to eliminate the above-mentioned drawbacks of the conventional art, and provides a surge absorber that can suppress surges and noise at the same time, is easy to manufacture, and can be miniaturized.

That is, the present invention combines a plurality of voltage-dependent nonlinear resistance elements having electrodes on both sides and several capacitor elements through electrode plates, and electrically connects every other electrode plate. , relates to a surge absorber in which external terminals are drawn out from this electrically independent electrode plate.

An embodiment of the present invention will be described below in Figures 1 to 5 of the drawings.
This will be explained using figures.

In the drawing, 1 is a voltage-dependent nonlinear resistance element with electrodes formed on both sides, 2 and 3 are capacitor elements with electrodes formed on both sides of a ceramic dielectric, 4,
As shown in FIG. 3, 5, 6, and 7 are disc-shaped and have a straight part in part, a protrusion 8 is provided in this straight part, and a notch 9 is provided at the tip of this protrusion 8. , second
There are first and second electrode plates 5, 6 on both sides of the voltage-dependent nonlinear resistance element 1, and capacitor elements 2, 3 on the outside of the first and second electrode plates 5, 6. Furthermore, a second electrode plate 4 and a first electrode plate 7 are arranged outside the capacitor elements 2 and 3, and the electrodes of each element and the first and second electrode plates 4 to 7 are electrically connected with cream solder. , mechanically coupled. That is, the voltage-dependent nonlinear resistance element 1 and the capacitor elements 2 and 3 are interposed between the first and second electrode plates 5 and 6.
It has a structure in which the first and second electrode plates 7 and 4 are placed on both sides of this stacked body.

Further, the protrusions 8 of the second electrode plates 4 and 6 are arranged in one direction, and the protrusions 8 of the first electrode plates 5 and 7 are arranged in a different direction from the other.
The external terminal 10 bent into an L-shape as shown in FIG. An external terminal 11 bent into an L-shape is inserted into the external terminal 11 and connected by soldering, and the element part is covered with a resin exterior (not shown) to improve weather resistance.

Further, the electrical equivalent circuit of the surge absorber having the above configuration is one in which a voltage-dependent nonlinear resistance element 1 and capacitor elements 2 and 3 are connected in parallel, as shown in FIG. With this configuration, when the external terminals 10 and 11 are connected between the power supply lines and signal lines, surges and noise that enter between the lines and have large voltage and current values are absorbed by the voltage-dependent nonlinear resistance element 1, and the voltage is lower than the operating voltage. In this case, the capacitor elements 2 and 3 exhibit a bypass effect and are effective against a wide range of surges and noise.

In the above embodiment, an example was described in which there was one voltage-dependent nonlinear resistance element 1 and two capacitor elements 2 and 3, but the number of these elements may be arbitrary.

As described above, the surge absorber of the present invention is effective against a wide range of line-to-line surge and noise that enters from power lines and signal lines, and moreover, it integrates a complex voltage-dependent nonlinear resistance element. Because it can be configured with a single structure, it can be easily integrated into electronic devices, etc., and the voltage is suppressed by the voltage-dependent nonlinear resistance element as a combined capacitor element, so the withstand voltage can be low and the size can be small. It can be made into something. Moreover, since electrode plates with protrusions that protrude at different positions are used to connect the elements, the wiring between each element can be done by connecting the protrusions located in the same direction all at once using external terminals. It is only necessary to connect them, and the manufacturing process for integration is simple and assembly is easy. In particular, when changing the number of elements to be combined, it is possible to easily adapt to the change.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the surge absorber of the present invention with the resin exterior removed, FIG. 2 is a sectional view of the same, and FIG. 3 is a front view of an electrode plate used in the surge absorber. FIG. 4 is a front view of an external terminal used in the surge absorber, and FIG. 5 is an electrical equivalent circuit diagram of the surge absorber. 1... Voltage-dependent nonlinear resistance element, 2, 3...
Capacitor element, 4 to 7... Electrode plate, 8... Projection, 9... Notch, 10, 11... External terminal.

Claims (1)

[Scope of utility model registration request] One or more voltage-dependent nonlinear resistance elements each having first and second electrode plates each having a protrusion that protrudes at a different position, each having electrodes on both sides, and a plurality of capacitor elements each having electrodes on both sides. are laminated with the first and second electrode plates interposed alternately between them, and the first and second electrode plates are arranged on both sides of this laminate, respectively, and the voltage-dependent nonlinear resistance is The above-mentioned first,
A surge absorber in which second electrode plates are combined and the first electrode plates and the second electrode plates are connected to each other by external terminals at protrusions.