JPH01313864A - Zero-insertion force connector - Google Patents

Abstract

PURPOSE:To reduce the operating force, open or close a contact without generating excess stress at various sections of a connector, and obtain a good action by staggering the push-up timing of floats. CONSTITUTION:When a float push-up bar 6 is pulled in the arrow A direction, floats 2a-2c are pushed upward in a main body 1 respectively. The gap between the inclined face of the float 2 and the inclined face of the float push-up bar 6 differs for each float respectively. When the float push-up bar 6 is pulled in the arrow A direction, the floats 2a-2c are pushed upward in this order. The float 2 is not wholly pushed up simultaneously, but the push-up timing is staggered, thus the load by the contact between a contact 7 and a printed circuit board is distributed timewise, the required force for operation can be suppressed low.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrical connector, and more particularly to a zero insertion force connector that is a card edge connector that is directly connected to a printed circuit board and has almost no insertion resistance.

[Conventional technology]

Conventionally, in this type of connector, after a printed circuit board is inserted, a movable element connected to a base via a lever is moved up and down in order to deform the contacts.

An example is shown in FIG. In the figure, the movable element 13 is connected to the main body 14 by levers 15 and 16. After inserting the printed circuit board 11 into the connector, press the lever 15.
By tilting down, the movable element 13 is pushed upward, and the two rows of contacts 17 having appropriate curves are respectively deformed inward and electrically connected to the contact portions 12 printed on the printed circuit board 11.

[Problem to be solved by the invention]

The above-described conventional zero insertion force connector has the disadvantage that a large amount of operating force is required because it is necessary to deform a plurality of element numbers at the same time. More specifically, the number of contacts is usually 10.0 times. The operating force per wire must be at least 10 to obtain a good electrical connection between the printed circuit board and the connector.
0 grams is required. Therefore, a force of 10 kg or more is required. Although the lever principle reduces the force required to push down the lever, there is a risk that the resin part that holds the lever may break.

Furthermore, if connectors become more multi-pole due to higher packaging density, the operating force will further increase, which will not only become even more dangerous, but may even make it impossible to operate the lever.

[Means to solve the problem]

The zero insertion force connector of the present invention includes a connector body made of an insulator, which has a space inside with one end being an open end, and a through hole in the longitudinal direction, and a connector body with spring properties. a plurality of contacts installed in the space, a plurality of floats that are movably fitted into the space and displace the contacts against the springiness when moved toward the opening end, and the through-hole. and a float push-up rod that moves the plurality of floats in a predetermined order when inserted into the hole and moved in the longitudinal direction.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

1 and 2 are a perspective view and a cross-sectional view of one embodiment of the present invention, and FIG. 3 is an 8! which moves the float of this embodiment up and down. FIG. 3 is a vertical cross-sectional view showing the structure.

The main body 1 made of an insulator has a float push-up rod 6 at the lower center.
It has a penetrating 63 in the longitudinal direction for inserting it, and a float 2 is fitted in the center upper space so as to be movable in the vertical direction. The contact 7 serving as a contact element has a spring property, a lower part is press-fitted into the main body 1, and an upper part is guided in the groove 5 of the float 2. Further, the lower surface of the float 2 and the upper surface of the float push-up rod 6 are in slidable contact with each other, and the contact surfaces are inclined surfaces at several locations in the longitudinal direction.

In this embodiment with such a configuration, as shown in FIG. 2, when the float 2 is pushed upward, the contacts 7 are pushed by the upper end of the float 2 and inserted into the printed circuit board.
If it falls in the direction of II4 and a printed circuit board is inserted, electrical contact can be made.

FIG. 3 shows how the float 2 is pushed upwards. That is, by pulling the float push-up rod 6 in the direction of arrow A, the floats 2a and 2b are lifted.

2c are each pushed upward within the main body 1.

At this time, the gap between the inclined surface of the float 2 and the inclined surface of the float push-up rod 6 is different for each float. Therefore, in FIG. 3, when the float push-up rod 6 is pulled in the direction of arrow A, the floats 2a, 2b, and 2c are pushed upward in this order.

In this way, by staggering the timing of pushing up the floats 2 without pushing them all up at the same time, the load caused by the contact between the contacts 7 and the printed circuit board is dispersed over time, and the force required for operation can be kept low.

〔Effect of the invention〕

As explained above, the present invention has the effect of reducing the operating force by shifting the timing of pushing up the float.

Therefore, the contacts can be opened and closed without creating extra stress on each part of the connector.
Good operation can be obtained without increasing the overall strength very much. Therefore, it is possible to provide a connector that is inexpensive and can be mass-produced.

[Brief explanation of the drawing]

1 and 2 are perspective views showing an example of an insertion force connector according to an embodiment of the present invention. 1.14...Body, 2...Float, 3...Hole,
4... Printed circuit board insertion groove, 5... Groove, 6... Float push-up rod, 7, 17... Contact, 11...
- Printed circuit board, 12... Contact portion, 13... Mover, 15.16... Lever.

Claims (1)

[Claims] A connector body made of an insulator and having a space inside with an open end at one end and a through hole in the longitudinal direction, and a plurality of contacts having spring properties and installed in the space of the connector body. a plurality of floats movably fitted in the space and displacing the contacts against the spring force when moved toward the opening end; and a plurality of floats that are inserted into the through holes and moved in the longitudinal direction. A zero-insertion force connector, comprising a float push-up rod that sometimes moves the plurality of floats in a fixed order.