JPS6010054Y2 - Circuit connection structure between microwave circuit boards - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circuit connection structure between microwave circuit boards that allows circuits to be connected or disconnected without using soldering or other joining means.

When a plurality of substrates on which microwave circuits are formed are placed in a storage part of a housing or the like and the circuits between the substrates are connected, a connection structure as shown in FIG. 1 has conventionally been used.

That is, a plurality of circuit boards 3 (two in the figure) are mounted on the inner surface 2 of the casing 1.
The circuits facing each other on the board 3 were connected by soldering at both ends of a gold ribbon 4.

This kind of connection structure requires cutting out the circuit part when testing, adjusting, or inspecting the circuit device. Therefore, soldering involves heating and melting the part, removing it, and then connecting it. If soldering or cutting is performed under excessive heat, the pattern may peel off or the circuit components may be affected, and in some cases, there is a risk that excess solder may scatter and damage the circuit.

Furthermore, the shape of the connection ribbon and the shape of the solder are unstable each time, resulting in electrical mismatching with respect to the connection between the boards.

The purpose of this invention is to solve the above-mentioned problems by making it possible to connect or disconnect circuits without using joining methods such as soldering. A connection having an elastic tongue piece that is cut and bent to have an insertion part facing upward at the center of the back side and has a U-shape when viewed from the side, and is attached to the main circuit at the end of each corresponding microwave circuit board attached above. A pair of metal fittings is attached with one leg of each of the pair of U-shaped recesses facing each other, and the recess covers the other upper leg of the pair of connection metal fittings, and the opposing leg covers the other leg of the pair of connection metal fittings. The main circuit is connected by inserting a U-shaped connection fitting into the connection receiving fitting so as to be in contact with the back surface and to be held by the elastic tongues.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a cross-sectional view of one embodiment of the present invention, in which a plurality of circuit boards 3 (two in the figure are placed) on the inner surface 2 of the casing 1, and the circuit boards 3 are elastically pressed on the periphery by means not shown. It is closely attached to the inner surface 2.

The main parts of the circuits at both ends of each of the above circuit boards 3 are the housings 1
The board 3 is connected in contact with a coaxial connector 5 penetrating through the wall surface of the board 3 by means not shown, and the opposing sides of the board 3 are connected by a connecting member 6 according to the present invention.

7 is the lid of body 1.

FIG. 3 is a perspective view of the main parts of the connecting member 6 with the connecting fittings removed.

On the main circuit patterns 31 and 31 at the opposing ends of each circuit board 3.3, a pair of connection sockets 61 and 61 each having a U-shaped cross section when viewed from the side are arranged so that the U-shaped recesses face each other. The lower surface of one of the legs is soldered and fixed to the predetermined positions of the patterns 31 and 31, respectively.

An elastic tongue piece 63 is formed on the back surface 62 of the receiving metal fitting 61 so as to be bent and open upward.

The connecting fitting 64 is bent into a U-shape, and connecting portions 65 are formed at both ends, and each of the above components is plated with gold, for example.

With the above configuration, the connecting portions 65.65, which are the opposing legs, are connected to the rear surface 62 so that the concave portion covers the other upper leg of the pair of connection holders 61.61 from above the connection holder 61.61.
．． 62 in the direction of the arrow, and lower the connecting parts 65, 65 of the connecting fitting 64 along the back surface 62.62 of the receiving fitting 61.61 to open each opening of the elastic tongue piece 63. collide with the section.

When the connection fitting 64 is pushed down in this state, the elastic tongues 63 are expanded and deformed in the rear direction, causing the connection fitting 64 to expand and deform.
The connecting portions 65 and 65 of the four connectors fit between the respective back surfaces 62 and the elastic tongues 63, and the connecting fittings 64 are clamped by the restoring force of the elastic tongues.

That is, the circuit pattern 3 of each circuit board 3, 3
1.31 is connected to the connecting fitting 61.61 through a connecting fitting 64 which is inserted and clamped.

Connection fitting 6 is used to disconnect the circuit boards 3 and 3 above.
The connection can be easily disconnected by pulling up and removing 4 in the opposite direction of the arrow.

Thereafter, the pressing means (not shown) of the circuit board 3 is released, and the board 3 can be removed from the inner surface 2 of the body.

Note that, at this time, since the coaxial connector 5 is in a contact-connected state, the connection at that part can be easily disconnected.

As explained above, in the present invention, the connection between the main circuits of the circuit board can be made using the connecting bracket and the connecting bracket that can be easily inserted and clamped, so it is extremely easy to disconnect them, and such operations are No matter how many times the connection pattern is repeated, there will be no problems such as peeling, heating or solder scattering, and there is no need for such equipment, and since the connections are made in a mechanically determined shape-related and dimensional state, there is no electrical connection between the connections. It has a remarkable practical effect when used for connection between microwave circuit boards, as there is little mismatch, and there are no problems caused by the solder adhesion or the irregular shape of the ribbon wire.

It goes without saying that the present invention can be applied to connections of microwave circuits, signal circuits, power supply circuits, etc.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional connection, FIG. 2 is an embodiment according to the present invention, and FIG. 3 is a perspective view of the main part of the circuit connection structure of FIG. 2 with the connecting fittings removed. 1 is a housing, 2 is an inner surface of the housing, 3 is a circuit board, 4 is a gold ribbon, 5 is a coaxial connector, 6 is a connecting member, 31 is a circuit pattern, 61 is a connection bracket, 62 is a back surface, 63 is a An elastic tongue piece, 64 a connecting fitting, and 65 a connecting part.

Claims (1)

[Scope of utility model registration request] An elastic tongue piece is cut and bent so as to have a U-shape when viewed from the side and an insertion portion pointing upward at the center of the back surface of the main circuit at the end of each corresponding microwave circuit board that is mounted on the same plane. A pair of connecting fittings each having a U-shaped recess facing each other are mounted on one leg of the pair, and the recess covers the other leg of the upper part of the pair of connection fittings, and the opposing leg is attached to the connecting fitting. A microwave circuit characterized in that a U-shaped connecting fitting is inserted into the connecting fitting so as to be in contact with the back surface of the receiving fitting and to be held by the elastic tongue piece, thereby connecting the main circuit. Circuit connection structure between boards.