JP2717379B2 - Edge connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector, and more particularly to an edge connector which is directly connected to a printed circuit board with low insertion force.

[0002]

2. Description of the Related Art Referring to FIG. 8, a conventional edge connector includes a plurality of connection pads 11 which will be described later with reference to FIG.
And a housing 17 having a receiving groove 15 for receiving a fitting portion of the printed circuit board 13 planted side by side in a predetermined direction.

[0005] The printed circuit board 13 is inserted and connected to the contact 19 laid in the receiving groove 15 by sliding and expanding the fitting portion.

[0004]

However, the conventional edge connector requires a large insertion / extraction force, and it is difficult to perform impedance matching.

Accordingly, a technical object of the present invention is to provide an edge connector that does not require a large insertion / extraction force and that can easily perform impedance matching.

[0006]

According to the present invention, there is provided a housing having a receiving groove for receiving, in a predetermined direction, a fitting portion of a printed circuit board in which a plurality of connection pads are planted side by side. An edge connector, wherein the tapered opening is movable relative to the housing so as to contact the housing in the predetermined direction and tapered along the predetermined direction corresponding to the receiving groove. A base insulator having a portion, a contact fixed end contacted and fixed to the receiving groove, a bent portion contacted with the fitting portion and bent so as to slide, and a contact portion contacted and slid with the tapered opening. An elastic thin plate formed in a substantially rectangular shape so as to have the other end of the contact slide, a fixed end fixed near a bent portion of the elastic thin plate, and fixed to the base insulator; A flexible printed circuit member having a fixed other end and extending and contracting in the predetermined direction between the fixed ends, wherein the printed circuit board is received in the receiving groove, and the housing contacts the base insulator. Sometimes, an edge connector is obtained in which the printed circuit board and the flexible printed circuit member are directly connected via the bent portion.

[0007]

The base insulator is movable relative to the housing so as to contact the housing in a predetermined direction, and is tapered along a predetermined direction corresponding to the receiving groove. It has. The elastic thin plate has an abutment fixed end that abuts and is fixed to the receiving groove, a bent portion that abuts on the fitting portion and is bent to slide, and an abutment slide other end that abuts and slides on the tapered opening. On the other hand, the flexible printed circuit member has a fixed end fixed to the vicinity of the bent portion of the elastic thin plate and a fixed other end fixed to the base insulator. It expands and contracts in a predetermined direction. When the printed circuit board is fitted in the receiving groove and the housing comes into contact with the base insulator, the printed circuit board and the flexible printed circuit member are directly connected via the bent portion. The flexible printed circuit member is connected to the base insulator via the bent portion, and easily expands and contracts when the printed circuit board is fitted into the receiving groove and the housing comes into contact with the base insulator.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An edge connector according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 1, an edge connector according to an embodiment of the present invention is movable relative to a housing 17 so as to contact the housing 17 in a predetermined direction. A base insulator 23 having a tapered opening 21 tapered in a predetermined direction is provided.

The edge connector of the present invention further includes an elastic thin plate 25 and a flexible printed circuit member 27. The elastic thin plate 25 is in contact with a contact fixing end 29 fixed in contact with the receiving groove 15, a bent portion 31 which is in contact with the fitting portion of the printed circuit board 13 and is bent so as to slide, and is in contact with the tapered opening 21. It is formed in a substantially U-shape so as to have the contact slide other end 33 to slide. The flexible printed circuit member 27 is provided with a bent portion 31 of the elastic thin plate 25.
Has a fixed end which is fixed in the vicinity of the other end, and a bent portion 35 for facilitating expansion and contraction is provided at the other end. The lower end of the bent portion 35 is connected to a connection portion 37 for soldering connection to another connection side substrate (36 in FIG. 7).

As shown in FIGS. 2, 6 and 7, when the printed circuit board 13 (also shown in FIG. 4) is pushed into the receiving groove 15 to be fitted thereto and the housing 17 comes into contact with the base insulator 23, the printed circuit board 13 is printed. The circuit board 13 and the flexible printed circuit member 27 are directly connected via the bent portion 31. When making contact, the balance of the contact force P applied to the elastic thin plate 25 is determined by the flexible printed circuit member 27.
Is very soft, W × b = P × a, and W = P × a / b
(A <b) (a and b are dimensions shown in FIG. 2). Therefore, the force W applied to the base insulator 23 that slides and moves inside the edge connector during insertion / extraction is only a very small force relative to the contact force P (P >> W), and the insertion / extraction force is reduced.

The flexible printed circuit member 27
Can be configured as a microstrip line using one end fixed to the elastic thin plate 25 as a ground plane. In this case, the ground plane and several points of contact may be connected via the via hole near the bent portion 31.

[0013]

According to the present invention, the base insulator is movable relative to the housing such that the base insulator contacts the housing in a predetermined direction, and the base insulator moves along the predetermined direction corresponding to the receiving groove. With the tapered opening tapered, when the printed circuit board is pushed into the receiving groove and fitted and the housing comes into contact with the base insulator, the flexible printed circuit member expands and contracts in a predetermined direction, and the printed circuit board And the flexible printed circuit member are directly connected via the bent portion. As a result, there is an effect that a large insertion / extraction force is unnecessary and impedance matching is easy.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing a state where a printed circuit board 13 is to be inserted into an edge connector according to an embodiment of the present invention.

FIG. 2 shows a printed circuit board 13 connected to the edge connector of FIG.
It is a side view of the section showing the state where it was inserted.

FIG. 3 is a top view of the edge connector of FIG. 1;

FIG. 4 is a plan view of a part of the printed circuit board 13;

FIG. 5 is a side view of a partial cross section of the edge connector of FIG. 1;

6 is a side view of a cross section of a main part of a state where the printed circuit board 13 of FIG. 4 is inserted into the edge connector of FIG. 5;

FIG. 7 is a front view of the edge connector of FIG. 6;

FIG. 8 is a sectional view of a conventional edge connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Plural connection pads 13 Printed circuit board 15 Reception groove 17 Housing 19 Contact 21 Tapered opening 23 Base insulator 25 Elastic thin plate 27 Flexible printed circuit member 29 Contact fixed end 31 Bend 33 Contact slide other end 35 Bend 36 Connection side board 37 Connection part

Claims (2)

(57) [Claims] 1. An edge connector comprising a housing having a receiving groove for receiving a fitting portion of a printed circuit board in which a plurality of connection pads are arranged and implanted in a predetermined direction, said edge connector having a predetermined direction. A base insulator that is movable relative to the housing so as to contact the housing and has a tapered opening tapered along the predetermined direction corresponding to the receiving groove; Abutment fixed end that is fixed in contact with the groove,
An elastic thin plate formed in a substantially rectangular shape so as to have a bent portion bent to contact and slide with the fitting portion, and a contact slide other end to contact and slide with the tapered opening; A flexible printed circuit member having a fixed end fixed to the vicinity of the bent portion of the thin plate and a fixed other end fixed to the base insulator, and having a flexible printed circuit member that expands and contracts in the predetermined direction between the fixed ends. When the printed circuit board is received in the receiving groove and the housing comes into contact with the base insulator, the printed circuit board and the flexible printed circuit member are directly connected via the bent portion. Edge connector. 2. The edge connector according to claim 1, wherein said flexible printed circuit member is connected to said fixed other end via a bent portion for facilitating expansion and contraction.