JPH0735337Y2 - Connector for double-sided mounting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a double-sided mounting connector having electrical contact pieces connected to terminal portions provided on both sides of a substrate.

[Prior Art] An example of a conventional double-sided mounting connector is shown in an external perspective view of FIG.

As shown in the drawing, a plurality of first electric contact pieces 2 and second electric contact pieces 3 arranged so as to face each other in two rows are embedded along a longitudinal edge surface of a prismatic insulator 1. A double-sided mounting connector is formed. Between these two rows of first and second electrical contact pieces 2 and 3, corresponding connecting terminals 8 and 9 are provided.
The electric contact pieces 2 and 3 were connected to the connection terminals 8 and 9 by inserting the printed circuit board 7 having both sides printed.

[Problems to be Solved by the Invention] However, in the conventional double-sided mounting connector, when the printed circuit board 7 is inserted, the space between the first electrical contact piece 2 and the second electrical contact piece 3 is widened and the connection terminal 8, 9 has to be brought into contact with each other, and when the number of the electrical contact pieces 2 and 3 increases, the insertion force of the printed circuit board 7 increases, which makes mounting difficult. Further, since the electric contact pieces 2 and 3 rub the surface of the printed circuit board 7, the cream solder attached to the soldering portion is peeled off.

Therefore, an object of the present invention is to provide a double-sided mounting connector in which the board can be inserted without rubbing between the electrical contact piece and the board.

[Means for Solving the Problems] According to the present invention, an insulator and a plurality of contacts arranged in a line along one edge of the insulator in the longitudinal direction and in contact with connection terminals provided on one surface of the substrate. A plurality of first electric contact pieces, and a plurality of second electric contacts arranged opposite to the first electric contact pieces along the other edge of the insulator at the same intervals and in contact with connection terminals provided on the other surface of the substrate; The electric contact pieces and the second electric contact pieces each hold the posture in the arrangement direction in a natural state and are latched in common, and can be inserted into and removed from the locking holes attached to the side surface of the insulator. A double-sided mounting connector including a terminal lifting member provided with a locking projection is provided.

[Operation] When connecting the double-sided mounting connector and the substrate,
Of the terminal lifting member is moved by moving the terminal lifting member that is engaged with the electric contact piece of FIG. Insert and fix.

[Embodiment] An embodiment of the connector for double-sided mounting of the present invention is shown in FIGS.
Shown in the figure.

As shown in FIG. 1, corresponding to the connecting terminals 8 on one surface printed on both sides of the printed circuit board 7, a plurality of first rows are formed in one row or several rows along the longitudinal edge of the prismatic insulator 1. The electric contact piece 2 is press-fitted or embedded. Also, a plurality of second electric contact pieces 3 are press-fitted or embedded in the insulator 1 in several rows corresponding to the connection terminals 9 on the other surface of the printed board 7 facing the electric contact pieces 2. A plurality of locking holes 4 are provided at positions corresponding to the electric contact pieces 3 along one edge of the insulator 1. Further, a hook-shaped locking protrusion 5 is provided on the lower surface corresponding to the locking hole 4 of the insulator 1,
Grooves provided on the side surface corresponding to each of the electric contact pieces 3.
A terminal lifting member 6 for holding the electric contact piece 3 is provided in the inside 10 to form a double-sided mounting connector.

In these connectors, an electric contact piece 3 press-fitted or embedded in an insulator 1 having a locking hole 4 provided along an edge thereof as shown in FIG. Holding

First, as shown in FIG. 3, in order to connect the electric contact piece 3 and the connection terminal 8 of the printed board 7, a force is applied to the electric contact piece 3 in the direction of arrow A to lift it. Here, as shown in FIG. 4, with the electric contact piece 3 being lifted, the locking projection 5 is inserted into the locking hole 4 on the lower surface of the terminal lifting member 6 and fixed by applying force in the direction of arrow B. When the printed circuit board 7 is inserted between the electric contact pieces 2 and 3 in this state and then pressure is applied in the direction of the arrow C to release it as shown in FIG. 5, the state returns to the state shown in FIG.
Is brought into contact with the connection terminal 8 by its biasing.

Therefore, when the printed circuit board 7 is inserted as shown in FIG. 6, the electric contact pieces 3 are held by the lifting members 6 fixed to the insulator 1 and are spaced from each other. When the terminal lifting member 6 is separated from the insulator 1 in this manner, the electric contact piece 3 contacts the printed board 7 and is connected to the connection terminal 8.

[Effects of the Invention] As described above, according to the present invention, it is not necessary to forcibly expand the space between the electric contact pieces when inserting the board, and it is sufficient to operate the terminal pushing-up member. Even if it increases, it is easy to handle. Further, since the board is not rubbed by the electric contact piece at the time of insertion, and the plurality of electric contact pieces are operated by holding the posture in the arrangement direction in a natural state by the terminal lifting member, the electric contact piece is not operated. The electric contact piece does not rub the substrate when contacting
Therefore, even when the electric contact piece is soldered to the board, the cream solder attached in advance does not peel off, so that a good soldering state can be obtained. Further, since the electric contact piece is operated while maintaining the posture in the arrangement direction in a natural state, unnecessary stress does not remain in the soldering portion, and therefore the soldering portion also has excellent durability. .

[Brief description of drawings]

FIG. 1 is an external perspective view showing a part of an embodiment of a double-sided mounting connector of the present invention, which is cut away, and FIG. 2 is a vertical sectional side view in a normal state cut at a right angle to the longitudinal direction in FIG. 3, FIG. 3 is a vertical sectional side view in which the electric contact piece is moved when the printed circuit board is inserted in FIG. 2, and FIG. 4 is a vertical sectional side view in which the terminal lifting member is fixed to the insulator in FIG. FIG. 5 is a vertical sectional side view when returning to the state of FIG. 1, FIG. 6 is a vertical sectional side view showing a state when the printed circuit board of the double-sided mounting connector according to the present invention is inserted, and FIG. 7 is mounted in FIG. FIG. 8 is a vertical sectional side view showing the latter state, and FIG. 8 is an external perspective view of an example of a conventional double-sided mounting connector. 1 ... Insulator, 2, 3 ... Electrical contact piece, 4 ... Locking hole,
5 ... Locking protrusion, 6 ... Terminal lifting member, 7 ... Printed circuit board, 8, 9 ... Connection terminal, 10 ... Groove.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshikatsu Okada 5-33-1 Shiba, Minato-ku, Tokyo Inside NEC Corporation (56) Reference JP-A-53-32399 (JP, A) JP 56-46672 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. An insulator, a plurality of first electric contact pieces arranged in a line along one edge of the insulator in a longitudinal direction and contacting connection terminals provided on one surface of a substrate, A plurality of second electric contact pieces facing the first electric contact piece and arranged at the same intervals along the other edge of the insulator to contact the connection terminals provided on the other surface of the substrate; A terminal lifting member that holds the electric contact pieces in their natural orientations in the arrangement direction and latches them in common, and has locking projections that can be inserted into and removed from the locking holes provided on the side surface of the insulator. A double-sided mounting connector characterized by including and.