JPH0412594B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a flat cable (hereinafter referred to as FC) connector that can increase packaging density.

[Technical background of the invention and its problems]

5th conventional 2.54mm pitch FC connector
There is a two-piece FC connector consisting of a receptacle (pressing side) 10 shown in FIG. 5A and a header (board side) 20 shown in FIG. 5B. The above receptacle 10
As shown in FIG. 6, the pitch of the core wires 12 of the FC 11 is, for example, 1.27 mm, and the connector 13 to which the core wires 12 are press-connected is constructed as follows.
That is, a plurality of contact insertion holes 15 are formed in two rows along the longitudinal direction on one surface of the rectangular parallelepiped insulator 14, and the contact insertion holes 15 are formed in each row with an interval of 2.54 mm. The contact insertion holes 15 in the rows and the second row are formed in a staggered manner and are offset by 1.27 mm from each other. In each contact insertion hole 15, a contact 17 having, for example, a U-shaped pressure contact portion 16 is planted. The arrangement of the contacts 17 is shown in Fig. 7, and by press-welding the above-mentioned FC11 with a pitch of 1.27 mm, two contacts arranged in a row with a spacing of 2.54 mm are installed in parallel on the insulator. It is possible to increase the packaging density compared to . However, recently there has been a demand for the development of FC connectors that can further increase the packaging density.

In addition, in FIG. 5, 18 is a strain relief, 21 is an insulator, 22 is a contact,
23 is an insertion/extraction tool.

[Purpose of the invention]

The present invention has been made to satisfy the above-mentioned needs, and an object of the present invention is to provide a flat cable connector that can have a considerably high packaging density and can be made compact.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to the drawings. Here, explanation will be given using a two-piece FC connector as an example, but the present invention is not limited to this. Figures 1a, b, c, and e are top views of the receptacle (pressing side) 30 of one embodiment of this FC connector;
These are a side view, a front view, and a bottom view.
2, strain relief 33, contact 34,
It is made of FC35 with a pitch of 0.635mm. FIG. 1d shows an external view of the header (board side) 40, which is configured to be insertable into and removed from the receptacle 30 described above, and which is electrically connected to contacts (not shown) provided inside the header 40 and contacts 34 of the receptacle 30. It is configured so that it can be separated.

The insulator 31 has a pressure contact cover 32.
And a strain relief 33 is removably provided. On the upper surface of the insulator 31, a second
As shown in Figure b, a plurality of contact insertion holes 31a are arranged in four rows along the longitudinal direction, and the contact insertion holes 31a in each row are spaced apart from each other by 2.54 mm. With reference to the contact insertion hole 31a, the contact insertion holes 31a in other rows are formed to be shifted by 0.635 mm in the longitudinal direction. A contact 34 having, for example, a U-shaped pressure contact portion 34a is installed in each contact insertion hole 31a. In this case, for example, the protrusion lengths of the pressure contact parts 34a in the first and second rows are the same, and the protrusion lengths of the pressure contact parts 34a in the third and fourth rows are longer than the protrusion lengths of the pressure contact parts 34a in the first and second rows, and The third and fourth rows have the same protrusion length.

On the other hand, the pressurized portion 35a of the FC 35 is constructed as shown in FIG. 2a. That is, in FC35, a plurality of cables are connected together, each cable has a notch of a predetermined length in the longitudinal direction at a predetermined position, and the notches are sequentially and alternately bent in opposite directions from the sides. O-shaped pressurized part 35a that is deformed when viewed from the side of the FC
is formed. In order to maintain this state, a pressure contact bar is inserted inside the pressure contact part as shown in FIG. 3b.

Such a pressure contact portion 35a is the pressure contact portion 3 of the contact 34 of the receptacle body 36 shown in FIG. 2b.
4a. Figure 3 is a plan view showing the press-contact state of FC35 and contact 34, and Figure 3b is
FIG. 3 is a diagram showing the relationship between two cables of the FC 35 and two contacts 34 that are electrically connected. Figure 4 is the X-X' line of Figure 3a, respectively.
FIG. 2 is a cross-sectional view taken along the YY' line and viewed in the direction of the arrow.

In this way, in a state where the pressurized portion 35a of the FC 35 and the pressurized portion 34a of the contact 34 are pressed together,
As shown in FIG. 1c, the FC 35 is inserted into the long hole 33a of the strain relief 33, and the lower end of the strain relief 33 is engaged with the engaging portion 31a at the end of the insulator 31. The receptacle 30 in such a state is inserted into the header 40, and the lock piece 32 provided on the pressure contact cover 32 is inserted.
If you lock a to header 40, it becomes a 2-piece FC.
The connector is assembled.

As described above, on one surface of the insulator 31, two types of contacts 34 having different lengths of pressure contact portions 34a are arranged in four rows in the longitudinal direction, and each row is equally spaced. Contacts 34 in other rows are planted with a predetermined pitch shifted by 0.635 mm, for example, with respect to the row of , and a notch is formed along the longitudinal direction for each cable at a predetermined position of the FC as the pressurized part 35a of the FC 35. , each cable in this notch is alternately bent to form a deformed O-shape when viewed from the side, and the pressurized portion 35a of this FC is connected to the pressurized portion 34a of the contact 34.
Since they are pressed into contact with each other, the packaging density can be considerably increased. That is, compared to the conventional arrangement of two FC connectors in parallel as shown in FIG. 6, the mounting density can be further increased, thereby making it possible to achieve compactness. In addition, since the pressure welded portion 35a of the FC35 is made as described above, the conventional pressure welding means can be used as is, and the protruding length of the pressure welded portion of the contact is 2.
It is practical because it is the same for each column.

〔Effect of the invention〕

According to the present invention, it is possible to provide a flat cable connector which can have a considerably high packaging density and can be made compact.

[Brief explanation of drawings]

Figures 1a, b, c, and e are top, side, front, and bottom views showing the receptacle side of an embodiment of the flat cable connector of the present invention, and Figure 1d is a header of the same embodiment. Figure 2a is a perspective view showing the pressure welded part of the flat cable of the same embodiment, Figure 2b is a perspective view of the receptacle body of the same embodiment, and Figure 3a is the same embodiment. Figure 3 showing the relationship between the flat cable and the pressure welding part of the contact.
Figure b is a diagram showing the relationship between the two cables and two contacts of the same embodiment, and Figures 4a and b are respectively cut along X-X' and Y-Y' in Figure 3a. The cross-sectional views in Fig. 5 a and b shown in the direction of the conventional
Front view of receptacle side and header side of 2.54mm pitch two-piece flat cable connector, No. 6
This figure is a perspective view showing the relationship between the flat cable of FIG. 5a and the receptacle body, and FIG. 7 is a diagram showing the relationship between the flat cable and contacts of the conventional flat cable connector. 30... Receptacle (pressure contact side), 31... Insulator, 32... Pressure contact part cover, 33... Strain relief, 34... Contact having pressure contact part 34a, 35... Flat cable having pressure contact part 35a, 36... Receptacle main body.

Claims (1)

[Claims] 1 A plurality of contact insertion holes are formed in four rows along the longitudinal direction on one surface of a substantially rectangular parallelepiped, and a plurality of contact insertion holes are formed in each row at equal intervals, and the contacts are inserted in a predetermined row. An insulator is formed in which the contact insertion holes of other rows are shifted by a predetermined pitch in the longitudinal direction with respect to the holes, and the contact insertion holes of each row of this insulator are inserted and fixed, and the protruding ends are inserted into the contact insertion holes of each row of the insulator. A plurality of cables each having a contact having a U-shaped pressure welding part of approximately the same length and a core wire at a position corresponding to the pitch between the rows of each contact, and each core wire being covered with an insulating jacket. The cables are connected together, and each cable is cut by a predetermined length in the longitudinal direction at a predetermined position, and the cut portions of each cable are sequentially bent in opposite directions from the side to form a deformed O-shape when viewed from the side. 1. A flat cable connector comprising a flat cable having a press-contacted part, and a core wire of the press-contact part electrically connected to the press-contact part of the contact.