JPH0447915Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] In a connector for connecting printed cables, a pair of connecting parts provided on a contact applies appropriate pressure between a part of the insulator in which the contacts are embedded and the connecting part of the printed cable. This provides a highly reliable connector at a low cost.

[Industrial application field]

The present invention relates to improvements in connectors for connecting printed cables.

FIG. 2 is a perspective view showing the configuration of the printed cable.

In FIG. 2, a flexible printed cable 1 has a plurality of conductor patterns 3 formed on a flexible insulating sheet 2, and a flexible insulating sheet 4 is placed thereon. Become.

The connecting portion 5 where the conductor pattern 3 is exposed is lined with a reinforcing plate 6 made of polyimide or the like, and is inserted into a connector formed by planting a contact facing the conductor pattern 3 and mounting it on a printed wiring board.

[Conventional technology]

Figures 3 to 5 are side sectional views for explaining the main structure of a conventional printed cable connector and the method of connecting the printed cable, and Figure 6 is a side view of the contact shown in Figure 5 and a side view of the contact. FIG. 3 is a cross-sectional view of the plate portion.

In FIG. 3, the connector 7 has an insulator 9 with an insertion port 9a for the cable connection portion 5 opened on the top surface.
A plurality of contacts 8 are installed in the thickness direction of the paper. The contact 8, which is punched and formed from a metal plate having spring properties, has a plate portion 8a that is press-fitted into the insulator 9.
The contact 8 includes a lead portion 8b projecting downward from the plate portion 8a, and a pair of connecting portions 8c projecting upward from the plate portion 8a.The lead portion 8b of each contact 8 projects from the lower surface of the insulator 9 in a staggered manner.

A pair of connecting portions 8c into which the cable connecting portion 5 having a thickness t of approximately 0.3 mm is inserted to ensure appropriate contact pressure.
The tips face each other at g ₁ for a distance of about 0.1 mm.

In FIG. 4, the connector 10 includes an insulator 1 having an insertion opening 12a for the cable connection portion 5 on the top surface.
2, a plurality of contacts 11 are installed in the thickness direction of the paper. The contact 11 is punched and formed from a metal plate having spring properties, and has a lead portion 11 that protrudes downward from a plate portion 11a that is press-fitted into the insulator 12.
b, and a connecting portion 11 that projects upward from the plate portion 11a.
c, and the lead portion 11b of each contact 11
project from the lower surface of the insulator 12 in a staggered manner.

When the cable connection part 5 with a thickness t of about 0.3 mm is inserted, the insulator 12 has a thickness of about 0.1 mm between the tip of the connection part 8c and the connection part 8c in order to ensure appropriate contact pressure between the connection part 5 and the connection part 11c. Walls 12 facing each other with distance g ₂
It has b.

In FIG. 5, the connector 13 includes an insulator 1 having an insertion opening 15a for the cable connection portion 5 on the top surface.
5, a plurality of contacts 14 are installed in the thickness direction of the paper. The contact 14, which is press-formed from a metal plate having spring properties, has a lead portion 1 that protrudes downward from a plate portion 14a that is press-fitted into an insulator 15.
4b, and a pair of connecting portions 14c that protrude upward from the plate portion 14a, and the lead portions 14b of each contact 14 protrude from the lower surface of the insulator 15 in a staggered manner.

A pair of connecting portions 15c into which the cable connecting portion 5 having a thickness t of approximately 0.3 mm is inserted to ensure appropriate contact pressure.
The tips face each other at g ₃ for a distance of about 0.1 mm.

However, the straight lead portion 14b and the pair of dogleg-shaped connecting portions 15c are formed by connecting and forming the left and right ends of the plate portion 14a and then bending them at right angles. Therefore, the contact 14 has a plate portion 14a, a lead portion 14b and a connecting portion 15 as shown in FIG.
It protrudes rearward from c and has a U-shaped cross section.

[Problem that the invention attempts to solve]

In the conventional connectors 7, 10, 13,
Since the contact 8 formed from a metal plate with a thickness of about 0.3 mm has a gap _〓g1 of about 1/3 of the thickness,
There were problems in that the contact surface of the connecting part 8c that contacts the cable connecting part 5 became rough, damaging the conductor pattern of the cable connecting part 5, and shortening the life of the press punching die.

Next, since the contact 11 formed from a metal plate with a thickness of about 0.3 mm has only one connecting portion 11c and the cable connecting portion 5 is not sandwiched between the contact 11 itself, there is a variation in the contact pressure of the connecting portion 11c. This causes instability, and the insulator 12 and contact 11 at the press-fitted part due to the reaction of the contact pressure.
There was a problem that the contact pressure was reduced during use due to misalignment.

Furthermore, it is formed from a metal plate with a thickness of about 0.1 mm,
The contact 14, which requires bending with spring back, has variations in the distance g ₃ and
The contact connection part 11c is twisted, and the cable connection part 5 is in point contact with the cable connection part 5, and the contact pressure with the cable connection part 5 is unstable, and the contact part 1
When the width of contacts 4c is made the same as the width of contact parts 8c and 11c (thickness of the metal plate used), plate part 14a protrudes from contact part 14c, so it is planted at the same high density as contacts 8 and 11. There was a problem that I couldn't do it.

[Means for solving problems]

According to FIG. 1, the present invention includes a plurality of contacts 23 from which a pair of elastically deformable connecting portions 23c protrude.
The insulator 22 with the print cable insertion port 22c opened between the pair of opposing connecting portions 23c contacts one of the connecting portions 23c with an appropriate pressure and is separated from the other connecting portion 23c by an appropriate distance. Partition wall 2
2e is a printed cable connector 21.

[Effect]

According to the above means, the pair of contact connection parts that sandwich the insulator partition and the cable connection part can be formed at a distance equal to or greater than the thickness of the contact connection parts, so that the surface roughness of the surface in contact with the printed cable can be reduced. This has improved the electrical connection between the contact and the printed cable, and has extended the life of the mold for forming the contact.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 is a perspective view (a) and side sectional views (b) and (c) showing the external appearance of a connector according to an embodiment of the present invention.

In FIG. 1, the connector 21 has a lead portion 2
A plurality of contacts 23 are embedded in the insulator 22 so that the contacts 3b protrude downward.

The contact 23 formed by punching from a metal plate having spring properties is a plate portion 2 that is press-fitted into the insulator 22.
3a, a lead portion 23b protruding downward from the plate portion 23a, and a pair of connecting portions 23c protruding upward from the plate portion 23a.

Insulator 2 made of molded plastic
2 has an insertion hole 22a on the top surface into which one of the connection parts 23c is inserted, an insertion hole 22b into which the other connection part 23c is inserted, an insertion hole 22c into which the printing cable connection part 5 is inserted, and an insertion hole 22a. and 22c
A partition wall 22e is provided to separate the insertion holes 22a and 2.
2b and 22c communicate with the press-fit hole 22d of the plate portion 23a, and the insertion holes 22a and 22c are partitioned by a partition wall 22e.

In such a connector 21, each of the plurality of contacts 23 implanted in the insulator 22 has a connecting portion 23c protruding upward from the left end of the plate portion 23a, which contacts the left surface of the partition wall 22e with appropriate pressure, and contacts the right end of the plate portion 23a. The connecting portion 23c protruding upward from the
At g ₄ , it faces the right side of the partition wall 22e. And between
g ₄ is, for example, the thickness t of the printed cable connection part 5 by 0.3
When expressed as mm, it is approximately 0.1 mm.

Then, when the printing cable connection part 5 is inserted from the printing cable insertion hole 22c, the printing cable connection part 5 is connected to the right connection part 23 as shown in FIG.
While c is pushed outward, it is inserted into g ₄ . Therefore, the printed cable connecting portion 5 is inserted between the pair of connecting portions 23c together with the partition wall 22e, so that the conductor pattern 3 of the printed cable connecting portion 5 and the contact 23 are electrically connected to each other with a predetermined contact pressure. It becomes connected.

[Effect of idea]

As explained above, the connector according to the present invention is
A pair of connecting portions are formed separated by a distance equal to or greater than the thickness of the contact. Therefore, compared to the conventional connector 7 that uses contacts 8, the printed cable is not damaged, the connection reliability is increased, and the life of the contact manufacturing mold is extended, which reduces the manufacturing cost. .

Furthermore, compared to the conventional connector 10 using the contacts 11 and the conventional connector 13 using the contacts 14, there is an effect that the reliability of the printed cable connection can be improved.

[Brief explanation of the drawing]

1 is a connector according to an embodiment of the present invention, FIG. 2 is a perspective view of a printed cable, FIGS. 3 to 5 are conventional connectors, and FIG. 6 is a contact shown in FIG. 5. In the figure, 21 is a printed cable connector, 22 is an insulator, 22c is a printing cable insertion port, 22e is a partition, 23 is a contact, and 23c is a connecting portion.

Claims (1)

[Claims for Utility Model Registration] An insulator 22 in which a plurality of contacts 23 from which a pair of elastically deformable connecting portions 23c protrude is implanted, and a printed cable insertion port 22c is opened between the pair of opposing connecting portions 23c. is in contact with one of the connecting portions 23c with appropriate pressure,
A printed cable connector characterized in that a partition wall 22e is provided which is separated from the other connecting portion 23c by an appropriate distance.