JPH0211731Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a high frequency connector for interconnecting strip conductors on first and second substrates constituting a strip line.

Prior Art In FIGS. 1 and 2 showing conventional high frequency connectors, 1 is a printed circuit board, 2 is a hybrid IC board, and these are made from a board that can form a microstrip line. Become. Strip conductors 3, 4 are provided on each board 1, 2 by printed wiring technology, and a grounding plate 5 is arranged under each board 1, 2, so that each board 1, 2, which is a dielectric material, A microstrip line with a characteristic impedance Z ₀ is formed by the combination of the strip conductors 3 and 4 and the ground plate 5.

placed within the opening 6 of the printed circuit board 1
The IC board 2 has a circuit element portion 7 in addition to the strip conductor 4, and constitutes a hybrid IC 8.

A contact piece 9 is a metal piece that electrically connects the strip conductor 3 of the printed circuit board 1 and the strip conductor 4 of the hybrid IC board 2. This contact piece 9 is pressed by a pressing member 11 through an insulating elastic body 10 such as silicone rubber, and thereby
Electrical coupling between the two strip conductors 3 and 4 is achieved.

By the way, it is extremely difficult to arrange the minute contact piece 9 so that it coincides with the strip conductors 3 and 4, and as shown in FIG.
There were times when I fell outside of 4. When such a protruding portion occurs, the capacitance between the protruding portion and the ground increases, resulting in a decrease in impedance. In addition, the contact piece 9 and the strip conductor 3,
The reliability of the connection decreases due to the decrease in the contact area with 4. Furthermore, if there are other conductors nearby, there is a risk of short circuits.

There are connectors shown in FIGS. 3 to 5 that solve the drawbacks of the connection using the contact piece 9 described above. This connector 12 is made by pasting metal conductors 14 in stripes with adhesive on an elastic body 13 such as silicone rubber, and the pitch of the conductors 14 is set smaller than the width of the strip conductors 3 and 4. be. Connector 1 configured in this way
2, as is clear from FIG. 5, even if the connector 12 is misaligned in the vertical direction with respect to the strip conductors 3 and 4, any one of the plurality of mutually independent conductors 14 will be connected to the strip conductor. 3,4
electrical connection is established. Furthermore, since conductors that are not used for connection are electrically isolated, impedance decreases due to increased capacitance and short circuits with other conductors do not occur. but,
For example, in order to connect a 50Ω strip line, the width and spacing of the conductors 14 must be approximately 0.2 to 0.5 mm, and it is not easy to attach such minute conductors 14 to the elastic body 13 with adhesive. However, even if it was bonded, it had the disadvantage of being easy to peel off.

Purpose of the Invention An object of the present invention is to provide a high frequency connector that is easy to manufacture and to which strip conductors can be easily connected.

Structure of the invention To achieve the above object, the present invention provides a strip conductor on the first and second substrates for connecting strip conductors on the first and second substrates arranged substantially on the same plane. A flexible printed circuit board for connection, which is formed so as to be arranged in the same manner as the strip conductor, and includes a plurality of printed conductors for connection to one strip conductor on the first and second substrates; an elastic body formed separately and placed on the flexible printed circuit board for connection; and pressing the flexible printed circuit board for connection via the elastic body to connect the strip conductor on the first board and the flexible printed circuit board for connection. The present invention relates to a high frequency connector comprising a pressing member for connecting a strip conductor on a second board with the connecting printed conductor.

Effects of invention The present invention has the following effects.

(a) Since the first and second substrates are connected by the flexible printed circuit board, this connection can be achieved at low cost and in good condition.

(b) Since the elastic body and the flexible printed circuit board are formed separately, the printed conductor for connecting the flexible printed circuit board can be easily formed with high precision without being limited by the elastic body.

(c) Since a plurality of connection printed conductors are provided for one strip conductor of the first and second substrates, highly reliable connections can be easily achieved.

Embodiment Next, a high frequency connector according to an embodiment of the present invention and a circuit device using the same will be described with reference to FIGS. 6 to 8. However, since the parts indicated by reference numerals 1 to 8 in FIGS. 6 to 7 are substantially the same as the parts indicated by the same reference numerals in FIGS. 1 and 2, their explanation will be omitted.

The connector of this embodiment includes a connecting flexible printed circuit board 20, an insulating elastic body 21 made of silicone rubber, a pressing member 22, a screw 23,
It consists of a ground plate 5. As is clear from the bottom view of FIG. 8, the connecting flexible printed circuit board 20 has a striped printed conductor 25 extending perpendicularly to the edge of the rectangular opening 24.
The strip conductors 3 and 4 of the first board, that is, the printed circuit board 1, and the second board, that is, the hybrid IC board 2 are formed to have a width of 1.5 mm, while the printed conductors 25 of the flexible printed circuit board 20 are formed with a width of 1.5 mm.
are formed so that the width and spacing are 0.3 mm. As is clear from FIG. 8, a plurality of connection printed conductors 25 are provided corresponding to one connection point, so that the same connection as shown in FIG. 5 is possible.

When electrically connecting the strip conductors 3 and 4 of the two substrates 1 and 2, as shown in FIG. , the elastic body 21, and the pressing member 22 are sequentially overlapped, and the pressing member 22 and the first
The ground plate 5 is connected through the through holes 26 and 27 with the substrate 1.
Screw the screw 23 into the screw hole 28 and tighten it. Note that since the flexible printed circuit board 20 and the elastic body 21 are provided with openings 24 and 29, the circuit element portion 7 can be mounted thereon.

As is clear from the above, this embodiment has the following advantages.

(A) Multiple strip-shaped printed conductors 2 at one connection point
5 is provided, and the strip conductors 3 and 4 and the printed conductor 25 extend in a direction perpendicular to the boundary line between the two substrates 1 and 2.
Even if the flexible printed circuit board 20 is misaligned, the high frequency and connection reliability will not deteriorate.

(B) A flexible printed circuit board 20 surrounds a portion near the boundary between the first board 1 and the second board 2.
is formed into an annular shape, and a plurality of strip-shaped printed conductors 25 are provided on the flexible printed circuit board 20 corresponding to a plurality of connection points, so that the strip conductors 3 and 4 at a plurality of points can be connected simultaneously. This connection can be easily achieved.

(C) Since the connecting printed conductor 25 is formed by etching, for example, it is possible to reduce the cost and improve the reliability of the connector. Also, the connector can be made smaller.

FIG. 9 shows a flexible printed circuit board 20 as a connector according to another embodiment. This connection flexible printed circuit board 20 has printed conductors 25 in a stripe pattern over almost the entire area. Therefore, it is possible to connect various connection points, and there is versatility.

Modifications The present invention is not limited to the embodiments described above, but can be further modified. For example, the 10th
As shown in the figure, the printed conductor 25 of the flexible printed circuit board 20 may be fixed to one strip conductor 4 with solder or conductive adhesive 30, and may be connected to the other strip conductor 3 by pressure. 10th
In the figure, the strip conductors 4 of the second substrate 2 are connected with the adhesive 30, but the strip conductors 3 of the first substrate 1 are connected with the adhesive 30, and the strip conductors 4 of the second substrate 2 are connected with the adhesive 30.
The strip conductors 4 may be connected by pressure. Furthermore, although the entire printed conductor 25 is pressed by the pressing means in FIG. 10, only the portion facing the strip conductor 3 may be pressed. Further, in the embodiment, the pressing member 22 is tightened and fixed with the screw 23, but it is also possible to place a spring between the lid of the circuit device and the pressing member 22 to press the pressing member 22, or to press the pressing member 22 directly with the lid. It may also be a structure for pressing.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional high-frequency connector.
Figure 2 is a plan view showing part of the device in Figure 1;
The figure is a plan view showing another conventional high frequency connector, Figure 4 is a sectional view of the connector in Figure 3, and Figure 5 is a cross-sectional view of the connector in Figure 3.
A plan view showing the state of connection by the connector shown in Figure 6.
The figure is an exploded perspective view showing a connector and high-frequency circuit device according to an embodiment of the present invention, FIG. 7 is a sectional view showing a high-frequency circuit device assembled using the parts shown in FIG. 6, and FIG. FIG. 9 is a bottom view showing another example of the flexible printed circuit board for connection, and FIG. 10 is a sectional view showing a modification of the method for fixing the flexible printed circuit board for connection. 1...Printed circuit board (first board), 2...
...Hybrid IC board (second board), 3, 4...
... Strip conductor, 5 ... Ground plate, 7 ... Circuit element part, 8 ... Hybrid IC, 20 ... Flexible printed circuit board for connection, 21 ... Elastic body,
22...Press member, 23...Screw, 25...Printed conductor.

Claims (1)

[Claims for Utility Model Registration] First and second objects arranged substantially on the same plane
a strip conductor formed on the first and second substrates for connecting strip conductors on the first and second substrates; a connecting flexible printed circuit board including a printed conductor; an elastic body formed separately from the connecting flexible printed circuit board and disposed on the connecting flexible printed circuit board; and a connecting flexible printed circuit board provided with a printed conductor; A high frequency connector comprising a pressing member for pressing the flexible printed circuit board for connection and connecting the strip conductor on the first board and the strip conductor on the second board by the printed conductor for connection.