JPS5935957Y2 - Printed board wiring pattern common connection piece - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connection piece for commonly connecting connection lines of a plurality of mounted components to a printed circuit board wiring pattern widely used in the construction of various electronic devices including communication devices.

The wiring pattern provided on the back of the printed board has a circular enlarged part with a connecting wire insertion hole (usually 2 mm or less in diameter) in the center for connecting to the connecting wires of various electronic components mounted on the wiring pattern. The connection wires of various electronic components such as transistors, diodes, resistors, and capacitors mounted on the surface of the printed circuit board are inserted into this insertion hole, and the electrical and mechanical connections are completed by solder dip. Similarly, when connecting multiple connection lines in common, provide an earth connection insertion port for each electronic component.
Connections were made at different locations on the ground wiring pattern.

FIG. 1 shows a perspective view from diagonally below the printed board showing this state, and shows an insertion opening of an enlarged part of the common wiring pattern 2 provided on the bottom surface of the printed board 1 together with other circuit patterns not shown. 3, 3′ 3″, etc. Earth connection wires for various electronic parts mounted on printed boards 4.4
', 4'', etc. are inserted and connected.

However, with this conventional method, the complexity of the assembly work, which requires inserting each connection wire of the mounted component into a separate insertion hole, and the need to extend common wiring patterns more than necessary, increases with the miniaturization of electronic components. The density of mounted components increases, the effective density of wiring patterns decreases, and the insertion opening 3.3'
, various drawbacks such as deterioration of high frequency characteristics due to the wiring pattern between 3'' cannot be avoided.

It is possible to eliminate the above drawbacks to some extent by making the common wiring pattern insertion openings particularly large and reducing their number, but at the same time, the area on which the wiring patterns are applied is reduced, resulting in a decrease in the effective density of the wiring patterns. This results in a reduction in the density of mounted components, which hinders miniaturization of equipment.

The present invention provides a novel common connectivity that eliminates these drawbacks.

The connecting piece according to the present invention has a caulking fixing part at the lower end, a stepped part in the center, and a caulking part for accommodating a plurality of wirings in the upper part.

It is easy to make the caulking fixing part at the lower tip less than 2 mm in diameter, so the conventional insertion port dimensions can be used as is, and the upper wiring accommodating caulking part has an inner diameter of about 4 mm and can accommodate more than ten connection wires. The positioning step in the center is useful for the caulking work of the lower caulking fixing part.
It helps to neatly arrange the connecting piece on the printed circuit board together with other mounted electronic components.

Fig. 2A is an enlarged perspective view of one embodiment of the connecting piece according to the present invention, and the opening in the same figure is a side view of the connecting piece attached to a printed board, and is made of conductive metal material such as copper or brass. The recess 7 at the tip, which has an outer diameter of about 2 mm, is useful for inserting the fixing part 6 into the insertion opening 9 of the printed board 8 up to the lower surface of the stepped part 10 and caulking it onto the common wiring pattern 2.

If the cylindrical upper wiring housing caulking part 12 with a slit 11 on the side has an inner diameter of about 4 mm, it can hold more than ten ground connection wires 1.
3 can be accommodated and connected together by caulking and fixing with a simple caulking tool.

As explained above, by using the common connection piece according to the present invention, it is possible to easily realize a one-point liquid localization method for each function of the printed wiring pattern, and even in the high frequency range, the common wiring The pattern is kept to a minimum, so even if the number of mounted components increases, the effective density of the wiring pattern will not be reduced. Its practical effects are remarkable.

[Brief explanation of drawings]

Fig. 1 shows a perspective view of the connection between the commonly used common wiring pattern and the connection lines of mounted components, and Fig. 2A shows a perspective view of the connecting piece according to the present invention. shows a side view of the device attached to a printed board. In the figure, 1 and 8 are printed boards, 3.3Z31'. Reference numeral 9 indicates a connection wire insertion opening, 6 indicates a caulking fixing portion, 10 indicates a positioning step, 11 indicates a sulin I., and 12 indicates a caulking portion of the connection wire 13.

Claims (1)

[Scope of utility model registration request] A printed board wiring pattern common connection piece made of metal, comprising a caulking fixing part at the lower end, a positioning stepped part in the center, and a caulking part for accommodating a plurality of connection wires at the upper part.