JPS6039990Y2 - Printed wiring board connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector for printed wiring boards that facilitates insertion and connection of printed wiring boards.

In electronic application equipment, the terminal section provided on the printed wiring board is
Insert directly into the connector as a male contact,
Circuits on printed wiring boards are connected to each other and to power supplies.

By the way, in this case, the number of connected circuits on the printed wiring board increases,
As connectors become more multipolar, a greater amount of force is required to insert the printed wiring board, making the connection more difficult.

Furthermore, as the number of connected circuits increases and the width of the printed wiring board increases, the printed wiring board P tends to warp toward the mounting surface of the circuit element E, as shown in the perspective view of Figure 1, and the degree of warping increases as the width increases. The more it becomes, the bigger it becomes.

For this reason, if the warpage becomes larger than the width of the insertion opening 1a of the connector as shown in the plan view of FIG. 2, there is a drawback that insertion becomes impossible.

The present invention has been made with the aim of providing a connector that eliminates the above-mentioned drawbacks, and will now be described in detail with reference to the drawings.

Fig. 3 is an external perspective view showing an embodiment of the present invention, Fig. 4a
, b, c are its A-A' part, 33-B' part and C
- It is a sectional view taken along the direction of arrow C', and its features are as follows.

The first is, as shown in FIG. 3, at both ends and in the center of the installation surface of the printed circuit board insertion port 1a of the insulating housing 1 of the female connector, and from the outside downwardly toward the insertion port 1a. The present invention is characterized in that a printed wiring board warp correction protrusion 2 is provided with a V-shaped guiding slope 2a that is continuous with the curved line.

In addition, 1b and 2b in the figure are partition walls.

As a result, the insertion port 1a of the printed wiring board is substantially expanded, and even if there is a warp, the printed wiring board P can be inserted into the guiding slope 2a as shown in the plan view and cross-sectional view shown in FIGS. 5a and 5b. , the printed wiring board P warped due to further insertion.
The central part of the straightening protrusion 2 is pushed in the direction of the insertion opening 1a by one of the guide slopes 2a of the correction protrusion 2 in the central part, as shown by the arrow in the figure, and automatically enters the insertion opening 1a. be.

Second, unlike the conventional arrangement, the contact portions of all the contacts are not arranged in a straight line, but the contact portions 3a of some of the contacts 3 protrude into the correction protrusion 2 (the insulating housing 1
The contact portion 4a of the other contact 4 is provided so as to protrude from the end face of the printed wiring board insertion port of the printed wiring board P, and is provided in the portion where the correction protrusion 2 is not provided in the insertion direction of the printed wiring board P as shown in FIG. The point is that there is a difference in position between the two.

As a result, as shown in the cross-sectional views shown in FIGS. 6a and 6b, some terminal portions of the inserted printed wiring board P first come into contact with each of the contact portions 3a of the contacts 3 located on the upper side, and The remaining terminal portion of the printed wiring board comes into contact with the contact portion 4a of the contact 4 by the subsequent insertion, thereby reducing the force required for insertion of the printed wiring board.

That is, the magnitude of the force required for insertion is mainly determined by the force required to open the opposing contact portions against the spring force.

Therefore, for example, the number of contacts 3 in the correction protrusion 2 is
If the number is the same as the number of other contacts 4, the force required to insert the printed wiring board can be reduced to about 172 compared to the conventional case where the contact portions of all the contacts are arranged in a row.

In addition, in the present invention, since the contacts 3 are provided to protrude within the corrective protrusion 2, the height of the connector can be reduced accordingly.

In addition, the length of insertion of the printed wiring board into the contact is determined by the depth between the end face of the printed wiring board insertion port and the contact 4, and this depth is shortened by the length of the contact 3 protruding into the correction protrusion 2. Therefore, the insertion length of the printed wiring board can be shortened.

Therefore, if the size of the printed wiring board is kept constant, the area for mounting components can be increased accordingly.

Therefore, according to the present invention, the number of connected circuits on the printed wiring board increases, and even if the printed wiring board becomes large and warped, the connector can be easily inserted, and the drawbacks of conventional connectors are eliminated.

Furthermore, due to the demand for smaller devices, printed wiring boards and other circuit components are often placed close to each other.

For this reason, it is often difficult to apply sufficient insertion force due to constraints from other printed wiring boards, and it is often difficult to see the insertion opening.

However, according to the present invention, not only can the insertion force be reduced, but the width of the insertion port is substantially expanded, and the printed wiring board is guided to the insertion port by the guiding slope, making it easy to downsize the device. becomes.

In addition, in the case of a printed wiring board with power terminals, the terminals excluding the power terminals are first connected to the connector to configure the required circuit, and then the power terminals are connected to the connector to supply power. This is desirable for preventing damage caused by application of reverse polarity voltage to mounted elements, such as mounted transistors, on a printed wiring board.

However, in conventional connectors in which all the contact points are arranged in a straight line, microscopically, each contact point is not in a straight line, and the printed wiring board may be inserted at an angle to the insertion port. I can't prevent it from happening.

For this reason, not only are simultaneous connections not possible, but the power supply terminals are likely to be connected before other circuit terminals, resulting in unfavorable results.

Therefore, conventionally, for example, as shown in the plan view shown in FIG.
It has been proposed to make it set back from the tip of N.

However, this method requires modifications to the conventional printed wiring board manufacturing process.

However, as described above, by selecting circuits for which it would be a problem if the power circuit is connected first, and locating the contacts for connecting other circuits higher than the contacts for connecting the power circuit, printing as described above is possible. The purpose can be distantly related without changing the positions of the power supply terminal and other circuit connection terminals in the insertion direction on the wiring board side.

The present invention has been described above with reference to one embodiment. For example, by selecting the height of the warpage correction protrusion 2 of a printed wiring board, the contact portions of the contacts are arranged in n stages, for example, two stages, for a total of three stages. It is also possible to create a row of contacts in the configuration to provide an insertion force of approximately 173 mm.

Further, in the above embodiment, the correction protrusions 2 of the printed wiring board are provided at both ends and the center, but modifications are possible such that the correction protrusions 2 at the center can be provided dispersedly between both ends.

Moreover, although the case where the contact portions of two contacts are arranged opposite to each other has been described above, the present invention can also be applied to a connector formed using one contact as shown in the sectional view shown in FIG.

As is clear from the above explanation, according to the present invention, even printed wiring boards that are large, have a large number of connected circuits, and are warped can be easily connected with little insertion force. It is possible to provide a compact connector for printed wiring boards that has various advantages such as being able to prevent damage to elements due to defects before and after connection, and has great effects in practical use.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views showing warping of the printed wiring board and plan views explaining how warping prevents insertion into the connector, and Figures 3 and 4 a, b, and c show examples of the present invention. External perspective view showing an example and its AA'
Section, 33-B' section, C-C' section arrow sectional view, Fig. 5a,
b is a plan view and a sectional view illustrating the insertion of a warped printed wiring board according to the present invention, FIGS. FIG. 8 is a plan view showing the arrangement of power supply terminals in a conventional printed wiring board, and a cross-sectional side view showing a modification of the present invention. P...Printed wiring board, E...Open circuit element, TLT
2...4N...Circuit terminal, TS...
...Power terminal, 1... Connector insulation housing, 1a... Printed wiring board insertion port, 1b...
...Insulating partition, 2...Warp correction protrusion of printed wiring board, 2a...Guiding slope, 2b...
Insulating partition, 3...contact, 3a...open contact portion, 4...contact, 4a...contact portion.

Claims (1)

[Scope of utility model registration request] In a printed wiring board connector, a printed wiring board warp correction protrusion with a V-shaped guiding slope connected to the insertion port is provided at both ends and the middle part of the printed wiring board insertion side end surface of the insulating housing, and this warpage is corrected. A contact is provided so as to protrude inside the correction protrusion, and a contact is provided in a portion where there is no warp correction protrusion, and the position of the contact of the warp correction protrusion and its contact point are shifted by a required amount in the insertion direction of the printed wiring board. A printed wiring board connector characterized by: