JPS582004Y2 - Printed varistor for connectors - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a printed varistor for connectors, among varistors that absorb abnormal voltages such as lightning surges and switching surges.

That is, on an insulating substrate that has three or more holes through which one connector terminal passes, first, lower electrodes are printed and printed alternately with electrodes that have the inner diameter of the holes and electrodes that are slightly larger than the inner diameter of the holes.
Burn.

Note that if there are two or more locations where the lower electrode is printed/baked on the same inner diameter of the hole through which the terminal passes, a slit is provided to separate them.

Next, print and bake a varistor film slightly larger than the inner diameter of the terminal so as to cover the lower electrode.

Finally, print and bake the upper electrode symmetrically with the lower electrode.

At this time, if there are two or more locations where the upper electrode is printed/baked on the same inner diameter of the hole, separate them.

Provide a slit.

By doing this, one terminal of the connector is sequentially and alternately connected to the lower electrode and the upper electrode, and a varistor is connected between each terminal of the connector.

In this way, the printed varistor for connectors of the present invention is obtained.

Connecting individual varistors between connectors as in the past is unreasonable both in terms of space and process.

However, according to the present invention, the varistor is printed and baked on a thin insulating board with terminal holes, so if this board is inserted and connected to one terminal of the connector, it does not take up much space and is inexpensive in terms of process. It is also advantageous.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3 of the drawings.

First, as shown in Fig. 1 (a, l), the lower electrode 3 is attached to the connector on an insulating substrate 2 made of alumina or the like, which has holes 1a, 1b, IC, and 1d through which connector terminals (not shown) pass. In order to connect with the terminal, the inner diameter of every other hole 1a, 1c is printed and baked at the same size, and the other holes 1b, 1d are printed and baked to be slightly larger than the inner diameter.

At this time, slits 4 are formed so as to separate the lower electrodes 3 printed and baked on the same inner diameter of the holes 1a and lc.
is provided.

Next, as shown in FIG. 2a, l), the varistor film 5 is made slightly larger than the inner diameter of the holes 1a to 1d to form the lower electrode 3.
Print and bake to cover.

Finally, as shown in FIGS. 3a and 3b, the upper electrode 6 is placed on the varistor film 5 so that the inner diameters of the holes lb and ld are the same, and the other holes 1a and lc are slightly larger than the inner diameter. Print and bake symmetrically with the lower electrode 3 so that

At this time, slits 7 are provided to separate the upper electrodes 6 printed and baked on the same inner diameter of the holes lb and ld.

By inserting one terminal of the connector into each of the holes 1a to 1d of the insulating substrate 2, a varistor can be provided between each terminal of the connector.

An equivalent circuit diagram at that time is shown in FIG. 4, and 8 is a terminal of the connector.

In the above embodiment, a case has been described in which the connector has four holes through which one terminal passes, but it is sufficient to have three or more holes.

If there are three holes through which one terminal of the connector passes, the two places that are printed and baked on the inside diameter of the hole are only one of the bottom electrode and the top electrode, so the slit is also printed and baked on the inside diameter of the hole. It is only necessary to provide it only on the electrode side, where two parts are printed and baked on the same inner diameter of the trailing hole.

The printed varistor for connectors according to the present invention as described above is advantageous in terms of space and cost, as it is possible to obtain a large number of varistors on the same board as needed. Sex is a big thing.

[Brief explanation of the drawing]

FIGS. 1a and 1) to 3a and 3b are a plan view and a sectional view, respectively, of the manufacturing sequence of a printed varistor for a connector according to the present invention, and FIG. 4 is an equivalent circuit diagram of the same varistor. 1 a, 1 b, I C, 1 d... Hole, 2...
...Insulating substrate, 3...Lower electrode, 4,7.
...Slit, 5...Varistor membrane, 6.
...Top electrode, 8...Connector one terminal.

Claims (1)

[Scope of utility model registration request] an insulating board having three or more holes through which one terminal of the connector passes;
A lower electrode is printed and baked on the insulating substrate so that the inner diameter of the hole is about the same as the inner diameter of the hole, and electrodes that are slightly larger than the inner diameter of the hole are printed and baked on the surface of the lower electrode. It consists of a varistor film that is printed and baked except for the larger part, an upper electrode that is printed and baked on the surface of the varistor film symmetrically with the lower electrode, and further printed and baked on the inner diameter of the hole. A printed varistor for a connector comprising a slit separating a lower electrode and/or an upper electrode.