JPH0134851Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector for connecting two printed wiring boards to one printed wiring board.

BACKGROUND OF THE INVENTION In electronic computers and other light electrical equipment, two printed wiring boards are often connected to one printed wiring board. In this case, a connector is used to connect the two without using a cable or the like. That is, as shown in FIGS. 1a and 1b, the conductor parts 1a and 1b are bent so as to be pressed with contact spring pressure against the so-called "tabs" provided on the front and back surfaces of one end of the printed wiring board 1 to be connected. , contact tails 3a and 4 fixed to the insulating housing 2
Mounting legs 5a and 6a so that a matches each other.
The first and second printed wiring board connectors 5 and 6 are
After fixing, the contact tails 3a and 4a are connected to the conductor parts 1a and 1b by soldering, so that the two printed wiring boards 7 and 8 can be inserted and connected between the contacts 3 and 4, respectively. ing.

However, the printed wiring board 1 has a large number of small-width conductor parts 1a and 1b arranged at small intervals at one end thereof, and correspondingly, the widths of the contacts 3 and 4 of the connectors 5 and 6 are also small and the intervals are small. The pitch is also small. In addition, since it is difficult to see at the same time whether the conductor parts 1a and 1b and the contact tails 3a and 4a match on the front and back sides of the printed wiring board 1, the contact tails are matched with the conductor parts and the two connectors 5, 6 to the front and back surfaces of the printed wiring board 1 is difficult. For this reason, the assembly work is troublesome and time-consuming, and increases the assembly cost of devices such as electronic computers that are constructed by connecting a large number of printed wiring boards. In addition, since it is difficult to make the thickness of the printed wiring board 1 to be connected constant, the distance between the two attached connectors 5 and 6 tends to change, and based on this, the two printed wiring boards connected The interval between 7 and 8 also changes. For this reason, when the printed wiring boards 7 and 8 are guided by guide rails and inserted while being held at the same time, as is often done, if the distance between the printed wiring boards 7 and 8 changes greatly, for example, the guide rails Unless the position of the rail is changed, the problem arises that the connectors 5 and 6 cannot be plugged into each other.

The purpose of the present invention is to provide a printed wiring board connector that can eliminate the above-mentioned difficulties, and the details thereof will be explained below with reference to the drawings.

2 and 3 are an exploded perspective view and an assembled partially sectional perspective view showing one embodiment of the present invention, and FIG. 4 is a sectional view taken along the line A-A' in FIG. The features are as follows. That is, the first method is to provide contact pairs 3 and 4 in two stages in a common insulating housing 9 with an insulating wall 9a in between, as shown in FIGS. , 4 are provided with tails 3a', 3a'' and 4 of the contact pairs 3 and 4, respectively, on the left and right sides of the drawer side.
Screw the printed wiring board 1 to be connected so that the bent parts 3b and 4b for solder connection of a' and 4a'' sandwich the printed wiring board 1 to be connected, and the conductor parts 1a and 1b on both sides thereof are in contact. The main feature is that mounting legs 9b are provided that can be fixed by.

The two printed wiring boards 7 and 8 can be plugged and connected using a single connector fixed to one side of the printed wiring board 1, similar to the conventional method using two connectors. In addition, the variation in the thickness of the printed wiring board 1 is prevented from causing a change in the distance between the two sets of contacts, and thus the distance between the two printed wiring boards, thereby eliminating the need for movement of the guide rail. be. Furthermore, by housing two groups of contact pairs in a common insulating housing 9, contact tails 3a', 3a'', 4a', 4
If one group of contact tails is positioned on the conductor section on the front and back sides of the printed wiring board, the other group of contacts will automatically be placed on the conductor section on the back side, so that a'' is fixed in a predetermined corresponding position. This makes it easier to fix the connector and reduces assembly costs.In addition, the height of the connector installation part is lower than before, making it easier to fix the connector. The feature is that the packaging density is improved.

Second, as shown in FIGS. 2 and 3, the insulating and contact tails are connected to the insulating housing 9 of the connector and are located on the extraction surfaces of the contact tail groups 3a', 3a'', 4a', 4a''. array body 10
The point is that it has been established. That is, as shown in FIG. 2, a support hole 9d is formed in the insulating wall 9a at the center of the insertion recess 9c provided on the contact tail outlet side of the insulating housing 9.
A press-fit protrusion 1 is provided and is press-fitted and held there.
0a, and an insulation/contact tail alignment back plate 10 having contact tail alignment grooves 10b. When the connector is fixed on the printed wiring board 1, contact spring pressure is applied on the conductor parts 1a and 1b in FIGS. Of the contact tail groups 3a', 3a'', 4a', 4a'', which are provided with bent portions 3b and 4b so as to be in contact with each other,
The contact tail 4a', which may come into contact with the conductor part 1c provided on the end surface of the printed wiring board 1 and cause a short circuit with another conductor part, for example, 1a, is removed from the conductor part 1.
electrically isolated from c. At the same time, the alignment groove 10b (see FIG. 2) aligns the contact tail group 4a', which is bent into an acute angle after following the surface of the insulating housing 9 and is particularly easy to bend and contact with other contact tails. In addition, other contact tail groups 3a'' and 4a'' can be aligned as necessary. With the above configuration, the present invention is characterized in that it has become possible to realize a two-tier stacked connector that eliminates the conventional difficulties and realizes a stable and reliable plug-in connection of two printed wiring boards.

In the above explanation, in order to prevent the contact tail from bending until the soldering between the contact tail and the conductor part of the printed wiring board is completed, the contact tail is made to come into contact with the conductor parts 1a and 1b of the printed wiring board. Bent contact tail 3a', 3
a'', 4a', 4a'' are further bent at a substantially right angle, and at the same time a connecting piece 11 of a contact tail is provided at each end, so that the connecting piece 11 can be cut and removed after soldering. However, if there is no risk of bending or breaking, there is no need for a right-angled bent portion or a connecting piece.

As is clear from the above explanation, according to the present invention, fixing to a printed wiring board is extremely easy, and the distance between two printed wiring boards to be connected is equal to the thickness of the printed wiring board to which the connector is fixed. This provides a connector that can stably and reliably connect two printed wiring boards to one printed wiring board, which has various advantages such as not changing due to variations in the wiring, and has a great practical effect. .

[Brief explanation of the drawing]

1A and 1B are cross-sectional views and perspective views illustrating a connection method using a conventional connector, FIG. 2 is an exploded perspective view showing an embodiment of the present invention, FIG. 3 is an assembled perspective view, and FIG. FIG. 3 is a sectional view taken along the line A-A' in FIG. 3; 1...Printed wiring board, 1a, 1b...Conductor portion, 1
c... End face conductor portion, 2... Insulating housing, 3,
4...Contact pair, 3a, 4a, 3a', 3a'',
4a′, 4a″……Contact tail, 3b, 4b…
...bent part for soldering connection, 5, 6... connector,
7, 8...Printed wiring board, 9...Insulating housing,
9a...Insulating wall body, 9b...Insulating partition wall, 9c...
Insertion recess, 9d...support hole, 10...back plate for insulation and contact tail alignment, 10a...press-fit projection, 10b...contact tail alignment groove, 11...
...connection piece.

Claims (1)

[Scope of utility model registration request] A connector is formed by providing two sets of contacts in two stages in the same insulating housing in which mounting legs are provided on the left and right sides, and an end face of a printed wiring board to which the connector is fixed on one side by the mounting legs, and this printing. 2 for a printed wiring board, which is provided with an insulating and contact tail alignment back plate having contact tail alignment grooves held in an insulating housing between the contact tail groups bent so as to be in contact with the conductor portions of the wiring board. Stacked connector.