JPH0740498B2 - PCB connector - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector that is a mechanical electronic component, and more particularly to a card edge type printed circuit board connector.

[Conventional technology]

Card edge type printed circuit board connectors include, for example,
As shown in the cross sectional view of FIG.
A resin housing 2 having an insertion groove 3 for accommodating
When the connection part 30 of the printed circuit board is inserted, the connection part 30
And a conductive connecting terminal 4 disposed in the insertion groove 3 so as to come into contact with the housing 2. The conductive connecting terminal 4 projects outside the housing 2 while bending inside the housing 2 to connect to an external terminal. There is a connector 1, and when the printed circuit board connection part 30 is inserted into this connector 1, one end 4a of the connection terminal
Is further curved and a strong contact pressure is generated, so that the electromechanical connection between the printed circuit board connecting portion 30 and the printed circuit board connector 1 is secured. Also, as shown in the cross-sectional view of FIG. 4, a resin housing 2 having an insertion groove 3 for accommodating the connecting portion 30 of the printed circuit board, and a resin housing 2 disposed in the insertion groove 3 and outside the housing 2. A connector 1 having a protruding conductive connecting terminal 4 and a contact pressure applying plate 5 facing the connecting terminal 4 in an insertion groove, for a printed circuit board having a so-called ZIF (zero insertion force) mechanism. This is a connector, and when the connecting portion 30 of the printed circuit board is inserted into this connector 1, the contact pressure applying plate 5 is pushed in the direction in which the insertion groove is opened with a finger or a special jig, and the contact portion 30 of the printed circuit board is inserted into the opened groove. insert. At this time, the printed circuit board can be inserted without resistance because it is pushed open more than the thickness of the printed circuit board. Then, the contact pressure applying plate 5 is returned to its original state to secure the electromechanical connection between the printed circuit board connecting portion 30 and the printed circuit board connector 1.

[Problems to be solved by the invention]

With the miniaturization and high density of electronic devices, there is a demand for miniaturization of contact pitches and lead wires in printed circuit board connectors. In the conventional printed circuit board connector, if the connection terminals are thinned so as to have an ultra-high density of, for example, a contact pitch of 0.8 to 0.3 mm, the performance as a spring is significantly deteriorated. The contact pressure is reduced, and the reliability as a printed circuit board connector is lost. Further, in the printed circuit board connector having the ZIF mechanism, there are functional and economical problems such that the housing is composed of two members and the structure is complicated.

The present invention has been made in view of such a point, and while maintaining a high contact pressure with a printed circuit board, for example, to thin the connection terminals so as to have an ultra-high density of about 0.8 to 0.3 mm contact pitch. It is an object of the present invention to provide a connector for a printed circuit board which can easily and electrically and mechanically join the printed circuit board and the connector without requiring a strong force when the printed circuit board is inserted.

[Means for solving problems]

The present invention achieves the above object, and an insulating housing having at least one insertion groove for accommodating a connecting portion of a printed circuit board according to claim 1, and an insertion housing on a side surface of the insertion groove. A plurality of electrically conductive connecting terminals, each of which is provided and can electrically contact the connecting portion, and each end of which protrudes outside the housing and can be electrically connected to an external terminal; and an insulating spring plate. An insulating contact pressure imparting plate that is housed in the insertion groove and is formed to contact the conductive connection terminal with spring pressure, and that has a mechanism for opening the insertion groove opening and releasing the spring pressure. In the printed circuit board connector provided, and in the printed circuit board connector according to claim 1 and claim 2, the insertion groove opening is opened and the spring pressure is applied. Dividing a mechanism is at least one printed circuit board connector is a flange bonded to the contact urge Yoita, there is provided a.

[Action]

Since the printed circuit board connector of the present invention has the above-mentioned structure, when the connection part of the printed circuit board is inserted into the insertion groove of the insulating housing, it is in contact with the connection terminal by using the mechanism for opening the insertion groove opening. The contact pressure applying plate can be moved to widen the insertion groove opening, and the connecting portion of the printed circuit board electrically contacts the conductive connection terminal arranged in the insertion groove.
Then, by releasing the mechanism that opens the insertion slot,
The contact pressure applying plate, which is a spring, applies pressure to the connecting portion of the printed circuit board to the side of the conductive connecting terminal, thereby strongly and electrically and mechanically connecting the connecting portion of the printed circuit board and the connecting terminal. When pulling out the connection part of the printed circuit board from the connector, reverse the operation to remove it.

〔Example〕

 Hereinafter, the present invention will be described with reference to specific examples.

FIG. 1 is a cross-sectional view showing an example of a printed circuit board connector according to the present invention, and FIG. 2 is a plan view of the printed circuit board connector 1 of FIG. The printed circuit board connector 1 of this example has a substantially rectangular parallelepiped insulative housing 2, and this insulative housing 2 is provided with an insertion groove 3 having a depth from the upper surface thereof as shown in FIG. ing. Ten connection terminals 4 are attached to the side wall of the insertion groove 3 of the connector 1 at intervals, and the ends 4b of the connection terminals 4 penetrate the bottom of the insertion groove 3 and are further bent in an L-shaped cross section to form a housing 2 Protruding from. In this example, a protrusion 4a is formed on the upper end portion of the connection terminal 4 to ensure contact with the printed board. Further, an insulating contact pressure applying plate 5 is inserted in the insertion groove 3 so as to face the connection terminal 4.
The contact pressure applying plate 5 forms a spring plate with the inside 6 of the housing below the insertion groove 3 as a fixed point and the lower part 7 of the insertion groove as a fulcrum, and is constantly pressed against the connection terminal 4 side by the spring pressure. In this example, a flange 8 is provided above the upper surface of the housing 2 and integrated with the contact pressure applying plate 5. Since the upper surface side of this housing is the side to which the printed circuit board is connected, the contact pressure imparting plate 5 and the flange 8 are provided with the opening of the insertion groove 3 in this mode so that the flange does not make unnecessary contact with the printed circuit board. It is curved diagonally upward from.

Next, an example of a method of using the printed circuit board connector 1 of this example will be described. First, if necessary, an external element or the like is electrically connected to the end 4b of the conductive connection terminal 4 by a conductor or the like. A printed circuit board to be connected is prepared, and the flange 8 is pushed in the direction of the solid line arrow in FIG.
Is separated from the connection terminal 4, and the mouth of the insertion groove 3 is opened. The connection portion of the printed circuit board is placed in the vicinity of the insertion groove opening thus opened, and the connection portion is inserted all the way into the insertion groove. When the pressed flange is released after the insertion is completed, the contact pressure imparting plate 5 tries to return toward the connecting terminal 4 by the repulsive force of the spring. The contact pressure imparting plate 5 strongly contacts the connection terminal of the printed board with the connection terminal by the pressure of the spring and fixes the printed board to the connector.

On the other hand, the printed circuit board can be separated from the connector by pushing the flange in the direction of the solid line arrow in FIG. 1 and pulling the connector.

The material of each member used in the present invention is arbitrary as long as it can function as the member. For example, a conductive material is used for the connection terminal, an insulating material such as resin is used for the housing, and a contact pressure applying plate is used. An insulating material such as a flexible resin or a metal subjected to an insulating treatment may be used.

The printed circuit board connector of the present invention is not limited to the above example, and various modifications easily conceived by those skilled in the art are possible and are included in the scope of the present invention. As such a modification, for example, a plurality of flanges, which is one in the embodiment, can be provided as shown in FIG. 6, and the contact pressure applying plate can be joined to each of the flanges.

〔The invention's effect〕

According to the present invention described above, the following effects can be obtained.

Since the present invention is configured as described above, it has the following effects.

(1) The connection terminal is electrically and mechanically connected to the printed circuit board, but the contact pressure application plate bears the application of the contact pressure for ensuring the connection, and the connection terminal is not substantially deformed or displaced. . Therefore, it is possible to miniaturize the connection terminals without giving consideration to the spring pressure and the mechanical strength of the spring.
It enables ultra-high sensitivity of mm and ultra-small PCB connector.

(2) Since the structure is simple, it can be manufactured at a lower cost and more easily than the conventional printed circuit board connector having the ZIF mechanism.

(3) Since the mechanism for opening the insertion groove and releasing the spring pressure is composed of at least one flange joined to the contact pressure applying plate, the insertion opening can be opened by a simple operation to connect the printed circuit board. The insertion guide can be smoothly performed, and further, after the insertion, a sufficient spring pressure for contact can be applied to the printed circuit board connecting portion.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an example of a printed circuit board connector according to the present invention, FIG. 2 is a plan view of the printed circuit board connector shown in FIG. 1, and FIG. 1 is a line AA 'in FIG. FIG. 3 is a cross-sectional view taken along a line, FIG. 3 is a cross-sectional view showing an example of a conventional printed circuit board connector, FIG. 4 is another cross-sectional view of a conventional printed circuit board connector, and FIG. 5 is FIG. FIG. 6 is a transverse cross-sectional view showing a mode of use of the printed circuit board connector of FIG. 6, and FIG. 6 is a perspective view showing a modification of the connector according to the present invention. 1 ... Printed circuit board connector, 2 ... Insulating housing,
3 ... insertion groove, 4 ... conductive connection terminal, 5 ... contact pressure applying plate,
6 ... fixed point, 7 ... fulcrum, 8 ... flange, 30 ... printed circuit board, 46 ... slider.

Claims (2)

[Claims] 1. An insulative housing having at least one insertion groove for accommodating a connection portion of a printed circuit board, each of which is disposed on a side surface of the insertion groove and can electrically contact the connection portion, And a plurality of electrically conductive connecting terminals, each end of which protrudes out of the housing and can be electrically connected to an external terminal, and an insulating spring plate is housed in the insertion groove so that a spring force is applied to the electrically conductive connecting terminal. A connector for a printed circuit board, which is formed so as to come into contact with each other, and has an insulating contact pressure applying plate having a mechanism for opening the insertion groove and releasing the spring pressure. 2. The printed circuit board connector according to claim 1, wherein the mechanism for opening the insertion slot and releasing the spring pressure is at least one flange joined to a contact pressure applying plate. Board connector.