JPS6115578Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is attached to a printed wiring board,
It also relates to a socket for mounting electrical equipment such as an electromagnetic relay.

Conventionally, sockets attached to printed wiring boards have only been provided with socket terminals that correspond to external lead-out terminals of signal lines that carry small currents in, for example, electromagnetic relays that are attached to these sockets. Since the external lead-out terminal of the load line to be energized is connected using a separate terminal block or connector, there is a drawback that the number of parts increases and the number of assembly steps increases.

Furthermore, if the load line is connected to the printed wiring board via a socket terminal, there are problems such as malfunctions and noise caused by electromagnetic induction.

Furthermore, when inserting the terminal piece of an electrical device into a socket terminal to make a connection, it is difficult to align the terminal piece of the electrical device and the socket terminal, and the electrical device may be inserted into the socket body with incomplete alignment. If pressed, the terminal piece may bend or, if it is a small electrical device, the electrical device itself may be damaged.

This idea was made in order to improve the above-mentioned drawbacks, and by setting a socket terminal for carrying a small current and a socket terminal for carrying a large current in the socket body, it aims to reduce the number of parts and assembly man-hours. In addition, it eliminates electromagnetic induction from the socket terminal for carrying large currents to the socket terminal for carrying small currents, prevents malfunctions and noise generation of electrical equipment connected to the socket terminals, and prevents the terminal strips of electrical equipment from It is an object of the present invention to provide a socket that allows easy positioning when inserting a socket terminal into a socket terminal.

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 raised base 4 on one side of the elevated base 4. There is a step h to form an intermediate platform 5 which is somewhat lower than the elevated platform 4.

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

The terminal storage recesses 6a, 6b, 6c, 6d are the second
As shown in FIG.
a, 7b close the bottom 8 as shown in FIG. 2b.

One socket terminal 11 is housed in each of the terminal housing recesses 6a, 6b, 6c, and 6d. One of these socket terminals 11 has a holding piece 11a formed at its upper end as shown in FIG.
A terminal piece 11b is formed by extending to the lower side of 1a.

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

The other socket terminal 12 is housed in each of the terminal housing recesses 7a and 7b. As shown in FIG. 4, these other socket terminals 7a and 7b have only a holding piece 12a, and the holding piece 12a holds the external terminal of the load line in the electrical equipment when it is inserted. .

At least a pair of external terminals 13 and 14 such as screw terminals are set on the elevated platform 4 and the intermediate platform 5. These external terminals 13 and 14 and the other socket terminal 12 are connected to each other with a conductive connecting piece 15.

The other socket terminal 12 and the conductive connecting piece 15
If they are integrally formed as shown in Fig. 4, the socket terminal 12 and the connecting piece 15 can be formed at the same time by press working, and the brazing process for both can be omitted, improving work efficiency. do.

The cover 2 is molded from an insulating material such as synthetic resin in the same manner as the socket body 1, and has a horizontal base covering part 16 that covers the horizontal base part 3 of the socket body 1.
A platform covering portion 17 that covers the platform 4 and an intermediate platform covering portion 18 that covers the intermediate platform 5 are formed.

The horizontal base covering part 16 has a terminal hole 16a at a position corresponding to one socket terminal 11, and a terminal hole 16b at a position corresponding to the other socket terminal 12.
has been established. High platform covering section 17 and intermediate platform covering section 1
8 are formed with external terminal insertion holes 17a and 18a.

A rising wall 19 is protruded from the other end of the horizontal base covering part 16 in opposition to the high stage covering part 17.
This constitutes a housing section 20 for electrical equipment (not shown).

In the above embodiment, 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 soldered terminals can be used.

In the above configuration, the socket main body 1 is attached to the printed wiring board by inserting the terminal piece 11b of one of the socket terminals 11 stored in the plurality of terminal storage recesses 6a to 6d into the printed wiring board. When an electrical device such as an electromagnetic relay is attached to this socket, insert the external lead-out terminal of the signal line through which a small current flows into the holding piece 11a of one of the socket terminals 11,
In addition, by inserting the external lead-out terminal of the load line through which a large current flows into the other socket terminal 12 connected to the external terminals 13 and 14, it is possible to connect the signal line and the load line, which carry large currents, by inserting it into the other socket terminal 12 connected to the external terminals 13 and 14. An electrical connection can be made.

As mentioned above, the socket terminal 11 for carrying a small current
Since the socket terminal 12 and the socket terminal 12 for supplying large current are set in the socket body 1, the number of parts and the number of assembly steps can be reduced compared to the case where these are set individually. In addition, the socket terminal 12 for carrying a large current is connected to a high platform 4 via a conductive connecting piece 15.
and external terminals 13 and 14 set on the intermediate stand 5
Since the socket terminal 11 for small current is energized from the terminal piece 11b led out from the terminal lead-out surface 9 of the socket body 1, the small current side is The socket terminal 11,
It is possible to prevent malfunctions and noise generation of electrical equipment connected to the 12.

Furthermore, the terminal pieces of the electrical equipment are attached to the holding pieces 11 of the socket terminals 11 and 12 set in the socket body 1.
When inserting and connecting to a and 12a, the rising wall 19
Since the housing section 20 for the electrical equipment is formed by the and elevated covering part 17, it is easy to align the terminal pieces of the electrical equipment and the holding pieces 11a, 12a of the socket terminals 11, 12, and there is no possibility of imperfections. There is no risk of bending the terminal piece or damaging the electrical equipment itself by pressing the electrical equipment against the socket main body 1 side in this state.

Furthermore, since the external terminals 13 and 14 are set with a step h, it is possible to prevent dielectric breakdown in the socket body 1 from occurring due to a long creepage distance.

In addition, in the above embodiment, the socket terminal 1
Although an example has been described in which the terminal piece 11b of No. 1 is led out below the socket body 1, it is also possible to use the terminal piece 11b by passing through the cover 2 and leading out to the side, as shown in FIG. .

As described in detail above, this invention has a socket terminal for carrying small currents and a socket terminal for carrying large currents in the socket body, so it is possible to reduce the number of parts and assembly man-hours, and it is possible to reduce the number of parts and assembly steps. Since the external terminal for energizing the socket terminal for energizing is set on a high platform protruding from the socket body, electromagnetic induction toward the socket terminal for energizing small current can be eliminated, making it easier to connect to the socket terminal. Accordingly, it is possible to provide a socket that can prevent malfunctions and noise generation of electrical equipment that is connected to the socket, and that allows easy positioning when inserting a terminal piece of the electrical equipment into the socket terminal.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the socket according to this invention with the cover removed, Figs. 2a and 2b are longitudinal sectional views of the terminal storage recess, and Fig. 3 is a perspective view of a socket terminal for carrying a small current. , FIG. 4 is a perspective view showing a connection state between a socket terminal for carrying a large current and an external terminal, and FIG. 5 is a perspective view showing another example. 1...Socket body, 2...Cover, 3...Horizontal base, 4...High ground, 5...Intermediate base, 6a-6
d, 7a, 7b...Terminal storage recess, 9...Terminal lead-out surface, 11...Socket terminal for carrying small current, 1
1a...Holding piece, 11b...Terminal piece, 12...Socket terminal for carrying large current, 12a...Holding piece,
13, 14... External terminal, 15... Conductive connection piece, 16... Horizontal base covering part, 17... High base covering part, 18... Intermediate base covering part, 19... Rising wall,
20...Storage area for electrical equipment, h...Level.

Claims (1)

[Scope of utility model registration request] A terminal storage recess in which a plurality of socket terminals are stored is formed in the horizontal base part of the electrically insulating socket body, and a raised base on which external terminals are set is provided protruding from one end of the horizontal base part. An intermediate block on which an external terminal is set is provided protruding from the outside, and a terminal piece of a socket terminal for carrying a small current, with a holding piece stored in a predetermined recess of the terminal storage recess, is inserted into the terminal conductor of the socket body. A conductive connecting piece is used to connect the holding piece of the socket terminal for carrying large current, which is led out from the surface and stored in the other recess of the terminal storage recess, to the external terminal;
and a horizontal base covering part and a high base covering part which respectively cover the horizontal base part, the high base and the intermediate base of the socket body, with the external terminals being set at the tops of the high base and the intermediate base with a step from the horizontal base part of the socket body. and an electrically insulating cover having a protruding intermediate base covering part and a rising wall protruding from the other end of the horizontal base covering part opposite to the high base covering part, and a socket on the horizontal base covering part. A terminal hole is formed corresponding to each terminal storage recess formed in the horizontal base portion of the main body, and the rising wall, the elevated base covering portion, and the horizontal base covering portion constitute a housing portion for electrical equipment. socket.