JPS6022554Y2 - socket - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a socket that is attached to a printed wiring board and into which an electrical device such as an electromagnetic relay is mounted.

Traditionally, sockets attached to printed wiring boards have
For example, in an electromagnetic relay that is attached to this socket, only socket terminals that correspond to external terminals for signal lines that carry small currents are provided, and external terminals for external terminals for load lines that carry large currents are provided on the terminal block. Since the connection is made using separate connectors and connectors, there is a drawback that the number of parts increases and the number of assembly steps increases.

Further, when the load line is connected to a printed wiring board via a socket terminal, if the current in the load line is particularly large, there are problems such as malfunctions and noises caused by electromagnetic induction.

This idea was developed in view of the above points, and it aims to reduce the number of parts and assembly man-hours, and also allows you to select either a printed wiring board or an external terminal depending on the magnitude of the current flowing through the load line. The purpose is to provide a socket that can be connected to a load line.

An embodiment of this invention will be described below with reference to the drawings.

In FIG. 1, 1 is a socket main body, and 2 is a cover. The cover 2 is put over the socket main body 1 to be integrated, and used as a socket.

The socket body 1 is molded from an insulating material such as synthetic resin, and includes a horizontal base 3, a raised platform 4 adjacent to the horizontal base 3, and a step on one side of the elevated base 4. The intermediate platform 5 is slightly lower than the elevated platform 4.

A plurality of terminal accommodating recesses 6a, 6b, 6c, and 6d and at least one pair of terminal accommodating recesses 7a+7b are formed on both side edges of the horizontal base portion 3 at predetermined intervals.

Terminal storage recess 6at 6bt 6ct 6dt
7av7b, as shown in FIG. 2, has a terminal lead-out hole 10 opened to the terminal lead-out surface 9 in its bottom 8.

One socket terminal 11 is housed in each of the terminal housing recesses 6a, 6b, 6c, and 6d.

As shown in FIG. 3, one of these socket terminals 11 has a holding piece 11a formed at its upper end, and extends below the holding piece 11a to form a terminal piece 11b.

Therefore, the holding piece 11a holds an external lead-out terminal of a signal line in an electric device such as an electromagnetic relay (not shown) when it is inserted, and the terminal piece 11b penetrates through the terminal lead-out hole 10 to connect the terminal. It is led out from the lead-out surface 9 and inserted into the printed wiring board.

The other socket terminal 12 is housed in each of the terminal housing recesses 7a and 7b.

These other socket terminals? As shown in FIG. 4, a holding piece 12a is formed on a and 7b, and a terminal piece 12b is formed extending below the holding piece 12a, and a conductive connecting piece 15 is connected to the holding piece 12a. are doing.

The holding piece 12a holds the external lead-out terminal of the load line in the electrical equipment when it is inserted.

At least one pair of external terminals 13 and 14 such as screw terminals are set on the high platform 4 and the intermediate platform 5, and these external terminals 1
3.14 and the other socket terminal 12 are connected to the conductive connecting piece 1
5 are connected to each other.

If the other socket terminal 12 and the conductive connecting piece 15 are integrally formed as shown in FIG. 4, the socket terminal 12 and the connecting piece 15 can be molded at the same time by press working, and the brazing process for both can be omitted. This improves work efficiency.

The cover 2 is molded from an insulating material such as synthetic resin in the same way as the socket main body 1, and includes a horizontal base covering part 16 that covers the horizontal base part 3' of the socket main body 1, and a high base covering part 17 that covers the high base 4. and an intermediate stand covering part 1 that covers the intermediate stand 5.
It forms 8.

The horizontal base covering part 16 has one of the socket terminals 11 described in □ above.
A terminal hole 16a is provided at a position corresponding to the other socket terminal 12, and a terminal hole 16b is provided at a position corresponding to the other socket terminal 12.
8a.

In the above embodiments, screw terminals are used as the external terminals 13 and 14, but the present invention is not limited to screw terminals, and terminals such as faston terminals and solder terminals can be used.

In the above configuration, the socket main body 1 includes one socket terminal 1 accommodated in the plurality of terminal storage recesses 6a to 6d.
1 terminal piece 11b and the other terminal piece 1 of the socket terminal 12
2b is attached to the printed wiring board by inserting it into the printed wiring board, and when installing an electrical device such as an electromagnetic relay to this socket, connect the external terminal of the signal line through which a small current flows. It is inserted into the holding piece 11a of one of the socket terminals 11, and the external lead-out terminal of the load line through which a large current flows is inserted into the holding piece 12a of the other socket terminal 12.

The other socket terminal 12 forms a terminal piece 12b as well as a conductive connecting piece 15 connected to the external terminal 13.14. Mojiku is external terminal 13.1
All you have to do is select one of 4 and energize the load line.

In other words, if the load line current is not very large,
The load line can be energized via the printed circuit board and, if the currents mentioned above are relatively large, via the external terminals 13.14.

Furthermore, since the external terminals 13 and 14 are set with a step, it is possible to prevent dielectric breakdown due to an increase in creepage distance.

In addition, in the above embodiment, the socket terminals 11 and 12
Although an example is described in which the terminal pieces 11b and 12b are led out below the socket body 1, the terminal pieces 11b and 12b are used by penetrating the cover 2 and leading out to the side as shown in Fig. 5. You can also do that.

As described above, the socket according to this invention electrically connects one socket terminal corresponding to the signal line of the electric device that carries a small current to the printed wiring board, and The external power socket terminal that corresponds to the load line of the device is configured so that it can be connected to both the printed wiring board and the external terminal, so you can select and use both depending on the magnitude of the current flowing through the load line. can do.

Therefore, there is no need for connectors, terminal blocks, etc. as in the conventional case.

Therefore, it is possible to reduce the number of parts and assembly man-hours, improve work efficiency, and reduce costs.Moreover, the signal line and load line can be energized separately, which prevents malfunctions due to electromagnetic induction. It is possible to prevent noise from occurring.

Furthermore, since the external terminals 13 and 14 are set with a step, the creepage distance becomes large, which has the advantage of preventing dielectric breakdown.

In addition, in the above embodiment, the socket terminals 11 and 12
Although an example has been described in which the terminal pieces 11b and 12b are led out below the socket body 1, the socket according to this invention has the terminal pieces 11b and 12b passed through the cover 2 as shown in FIG. It can also be used by being led out to the side.

[Brief Description of the Drawings] Fig. 1 is a perspective view of the socket according to the invention with the cover removed, Fig. 2 is a vertical cross-sectional view of the terminal storage recess, Fig. 3 is a perspective view of one socket terminal, FIG. 4 is a perspective view showing the connection state between the other socket terminal and the external terminal, and FIG. 5 is a perspective view showing another embodiment. 1...Socket body, 6a to 6dg 7at
7b...Terminal storage recess, 9...Terminal lead-out surface, 11...One socket terminal, 1"
a...Holding piece, llb...Terminal piece, 1
2...Other socket terminal, 12a...
・Holding piece, 12b...Terminal piece, 13.14...
...External terminal, 1-5... Conductive connection piece,
h...Step.

Claims (3)

[Scope of utility model registration request] (1) A plurality of terminal storage recesses are formed in the socket body, one socket terminal consisting of a holding piece and a terminal piece and at least one pair of the other socket terminal are stored in these terminal storage recesses, and the above-mentioned The terminal pieces of both socket terminals are led out from the terminal lead-out surface of the socket body, and the other socket terminal and at least one pair of external terminals set adjacent to the terminal storage recess are connected with a conductive connecting piece. A socket characterized by being connected to each other with. (2) The socket according to claim 1, wherein the other socket terminal and the conductive connecting piece are integrated. (3) The socket according to claim 1 or 2 of the utility model registration claim, wherein the external terminal is set with a step.