JP3571600B2 - PCB socket - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a printed circuit board socket for selectively electrically connecting between two columns of the three columns of connection pins in three columns and a plurality of rows of connection pins connected to different conductive patterns on a printed circuit board. About.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a telephone line substrate has a large number of lines formed on a single printed circuit board, and switches between a circuit connection state during normal use and a check state for failure or the like by switching. That is, a conductive pattern of three columns and a plurality of rows is formed, and in a normal connection state, two columns and a plurality of rows of the conductive pattern of the three columns and a plurality of rows are not connected. A failure is detected by connecting a plurality of rows of conductive patterns.
[0003]
By the way, the conductive pattern is switched between the normal connection state and the check state for failure as described above, and when a large number of conductive patterns are formed in the row direction, the switching of the conductive pattern in the column direction is simplified. In this case, a mechanical or electrical switch is connected in the column direction in the column direction.
[0004]
[Problems to be solved by the invention]
Thus, when connected mechanically, an electrical switch between the conductive patterns, will be the area for substantially used narrowed in order to equipped with the switch for the switch, and the cost Also increased.
[0005]
An object of the present invention is to solve the above-described problem. The object of the present invention is to attach three rows and a plurality of rows of connection pins for each conductive pattern in a matrix, and to form two rows and a plurality of columns of the connection pins. Since the pins are detachable from the pins and the two rows of pins are electrically connected, the circuit can be checked by installing it on the other two rows and multiple rows only at the time of failure switching. It is intended to provide a socket for a board.
[0006]
[Means for Solving the Problems]
The printed circuit board socket of the present invention achieves the above-mentioned object, and the means is such that a pair of pin fitting portions formed in a flat shape and in an eyeglass shape are formed, and the pin fitting portions are formed on the pair of pin fitting portions. And a terminal fitting in which an elastic portion protruding inside is formed opposite to each other, and a lock piece is formed on a side surface of the pin fitting portion, and an elongated cube, and has a planar shape in a direction orthogonal to the longitudinal direction. A plurality of through holes into which the pin fitting portions of the terminal fittings are fitted at predetermined intervals, and a lock hole formed on a side surface with which the lock piece of the terminal fitting is engaged. The connection of the terminal fittings to two rows and three rows of connection pins formed of three columns and a plurality of rows formed in a matrix and connected to different conductive patterns on a printed circuit board. Mating pin to mating part And in the connecting pin is the an elastic portion of the terminal fitting is elastically sandwiched and fixed, between the two rows of pins of each row is characterized in that so as to be electrically connected.
[0007]
Further, the connection pins are molded on a resin base, project from both ends of the resin base, one is connected to the conductive pattern of the printed circuit board, and the other end is fitted to the socket. It is preferable that the socket is formed so as to be cut in the row direction.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a printed circuit board socket according to the present invention will be described below with reference to the drawings.
A is a printed circuit board socket (hereinafter, simply referred to as a socket) according to the present invention, and includes a resin block 1 and a terminal fitting 2 made of a conductive metal such as brass as shown in FIGS. .
[0009]
Next, the configuration of the resin block 1 will be described. The resin block 1 is formed in an elongated rectangular parallelepiped, and in a direction orthogonal to the longitudinal direction of the resin block 1, a pair of eyeglass-shaped through-holes 11 is formed at predetermined intervals in a planar shape. Many are formed. Lock holes communicating with the through holes 11 are formed on both side surfaces of the resin block 1, and concave portions 13 indicated by arrows indicating insertion directions are formed near the lock holes 12.
[0010]
Next, the configuration of the terminal fitting 2 will be described. The terminal fitting 2 is formed into a spectacle shape in a planar shape fitted into the through hole 11 of the resin block 1, and a pair of pin fitting portions 21 is formed. In addition, the pin fitting portion 21 is formed with opposing elastic portions 22 for inwardly holding a pin 42, which will be described later, and a resin block is provided on a side surface of the pin fitting portion 21. A lock piece 23 engaged with one lock hole 13 is formed to protrude.
[0011]
In order to attach the terminal fitting 2 to the resin block 1 thus configured, the spectacle-shaped terminal fitting 2 is fitted into the spectacle-shaped through hole 11 of the resin block 1. In this fitting, the lock pieces 23 of the terminal fitting 2 are engaged with the lock holes 32, and the terminal fitting 2 is fixed in the resin block 1.
[0012]
B denotes a printed circuit board for telephone lines, in which a large number of conductive patterns 3 are formed in a matrix, and two rows of conductive patterns 31 for normal circuits in normal use and two rows of test circuits for checking for failures and the like. The conductive pattern 32 is formed. In addition, the conductive patterns 31 and 32 are ground conductive patterns commonly used by intermediate conductive patterns.
[0013]
C is a connector comprising a resin plate 41 and a number of pins 42 arranged in a matrix molded on the resin plate 41. The pins 42 project from both sides of the resin plate 41, and the projecting pins 42 Is inserted into a through hole of the conductive pattern 3 of the printed circuit board B, and is soldered on the back surface. In addition, the resin plate 41 is not necessarily required as the connection tool C, and only the pins 42 may be directly soldered to the printed circuit board B.
[0014]
Next, to explain the operation based on the above-described configuration, first, the pins 42 are soldered to all the conductive patterns 3 on the printed circuit board B. That is, the pins 42 are attached to the normal circuit conductive pattern 31 that is normally used and the test circuit conductive pattern 32 that is used in the test circuit. Next, the resin block 1 is cut along the longitudinal direction by matching the number of pins 42 in the row direction with the number of terminal fittings 2.
[0015]
When the operation of the printed circuit board B is performed as a normal operation, the pin fitting of the terminal fitting 2 of the socket A for the printed circuit board to the two rows of pins 42 connected to the normal circuit conductive pattern 31 is performed. By fitting the mating portion 21 to the pin 31, the connection between the normal circuit conductive patterns 31 is performed, and the printed circuit board B performs a normal operation.
[0016]
Here, when an abnormality occurs due to a failure or the like in the printed circuit board B, the printed circuit board socket A is detached from the pin 42 to open the space between the normal circuit conductive patterns 31, and then the terminal fittings of the printed circuit board socket A are removed. By fitting the two pin fitting portions 21 to the test circuit conductive patterns 32, the test circuit conductive patterns 32 are connected to each other, so that a test circuit for failure or the like can be performed.
[0017]
【The invention's effect】
As described above, according to the present invention, three columns and a plurality of rows of connection pins connected in a matrix to different conductive patterns on a printed circuit board are detachably fitted to the two rows and a plurality of rows of the connection pins. And a socket for electrically connecting the pins in two columns of each row, the socket can be switched between a conductive pattern for a normal circuit and a conductive pattern for a test circuit, and therefore, as in the prior art, Since no switch is required, the size of the printed circuit board can be reduced, and the cost can be reduced.
[0018]
Further, since the socket is formed so as to be cut in the row direction, any printed circuit board, that is, a case where the number of pins is large or small, can be accommodated, and a large number of prints can be made with one socket. It has effects such as being able to cope with a substrate.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a use state of a printed circuit board socket according to the present invention.
FIG. 2 is a plan view of a printed circuit board socket.
FIG. 3 is a bottom view of the same.
FIG. 4 is a side view of FIG. 2;
FIG. 5 is a front view of the terminal fitting.
FIG. 6 is a plan view of the same.
FIG. 7 is a side view of FIG. 5;
FIG. 8 is a cross-sectional view of a state where the terminal fitting is fitted to the resin block.
[Explanation of symbols]
A Socket for printed circuit board B Printed circuit board C Connector 1 Resin block 11 Through hole 11
12 Lock hole 2 Terminal fitting 21 Pin fitting part 22 Elastic part 23 Lock piece 3 Conductive pattern 31 Conductive pattern for normal circuit 32 Conductive pattern for inspection circuit 41 Resin plate 42 Pin

Claims (3)

A pair of pin fitting portions formed in a spectacle shape in a planar shape are formed, and the pin fitting portions are formed with elastic portions protruding inside in opposition to each other. A terminal fitting having a lock piece formed on a side surface thereof, and a through hole formed in an elongated cube and having a planar shape in a direction orthogonal to the longitudinal direction and in which the pin fitting portion of the terminal fitting is fitted with a predetermined interval. A plurality of resin blocks each having a lock hole formed on a side surface with which the lock piece of the terminal fitting is engaged, and three rows connected in a matrix to different conductive patterns on a printed circuit board; By fitting the connection pins of the terminal fitting into the fitting portions with respect to the connection pins of the two rows and the plurality of rows of the connection pins formed in a plurality of rows, the connection pins become elastic portions of the terminal fittings. in is elastically sandwiched and fixed, the row PCB socket between the pins of the row, characterized in that it has to be electrically connected. The connection pin is molded on a resin base, protrudes from both ends of the resin base, one is connected to the conductive pattern of the printed board, and the other end is configured to be fitted to the socket. The printed circuit board socket according to claim 1. The printed circuit board socket according to claim 1, wherein the socket is formed so as to be cut in a row direction.

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