JPS6035979Y2 - Connector connected to flat cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical connector, and more particularly to the structure of a connector connected to the end of a flat cable.

For example, when using a flat cable in a system that includes computers, communication devices, etc., one or more conductors used as ground wires (hereinafter referred to as ground conductors) are placed between one or more conductors used as signal wires (hereinafter referred to as signal conductors). A connector is attached to the end of the flat cable to make the connection easier and more accurate.

However, with the thin pitch flat cables that have become available recently, it is difficult to accurately connect the conductors to the contacts of the connector, especially when it comes to connecting the signal conductor and the ground conductor separately. is extremely difficult, inefficient and uneconomical.

Therefore, an object of the present invention is to provide a connector that can be connected to a narrow pitch flat cable without causing short circuits between the conductors and distinguishing between the signal conductor and the ground conductor.

A further object of the present invention is to provide a connector that can be connected to narrow pitch flat cables with extremely simple construction.

According to the present invention, in a connector connected to a flat cable having a conducting wire used as a signal line and a conducting wire used as a grounding wire, a plurality of protrusions lined up in a row at intervals from each other and an arrangement of the protrusions laterally an insulating housing having a housing edge extending along the housing edge; a plurality of conductive contacts having a wiring part placed on the tip of the protrusion and assembled into the housing; and a plurality of conductive contacts assembled to the housing edge. a common grounding member, each of the common grounding member and the housing edge has a groove at a position corresponding to the protrusion, and at least the inner surface of the bottom of the groove of the common grounding member is connected to the groove of the housing edge. The conducting wire used as the signal line has a longitudinally intermediate portion connected to the connecting portion, and a portion on one end of the conductive wire used as the signal wire is connected to the bottom of the groove in the edge of the housing. and the other end portion is drawn out to the opposite side from the common grounding member, while the conductive wire used as the grounding wire is connected to the common grounding member and drawn out through the mutual spacing between the plurality of projections. A connector to be connected to a flat cable is obtained.

Examples will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the connector according to the present invention.

The connector includes an insulative housing 1, a plurality of conductive socket contacts 2 and a conductive common ground member 3.

The housing 1 has a plurality of parallel contact-embedding spaces 101 formed in two rows in one-to-one correspondence with each other, and spaces 102 (hereinafter referred to as grooves) between each other at positions corresponding to the rows of these spaces 101. It has a plurality of protrusions 103 formed in a line in a row, and a cable receiving recess 105 provided on one edge 104.

The contact 2 has a pair of contact portions 201, 201 at one end, a curved connection portion 202 at the other end, and a pair of small protrusions 203, 203 for engaging with the housing 1.

Such contacts 2 occupy a large number of spaces 1 in the housing 1.
01 and the pin terminals inserted through the window 106 are received in contact between the pair of contact portions 201, 201.

At this time, in order to facilitate the insertion of the pin terminal and to obtain a large contact pressure, each of the contact portions 201 is formed so that a portion strongly pinches the dowel 107 of the housing 1.

Also, the contacts 2 installed in the contact installation spaces of one row and the contacts 2 installed in the contact installation spaces of the other row are rotated 1800 turns from each other around the contact axis. Moreover, the connection portions 202 are placed alternately on the plurality of protrusions 103.

Furthermore, the base portion 204 of the connection portion 202 of the contact 2
is made narrow so that it does not protrude to the position corresponding to the groove 102.

The common ground member 3 is connected to the other edge 108 of the housing 1.
The tongue pieces 301 at both ends are placed on the connection portions 202 of the contacts 2 at both ends and fixed by soldering.

The common ground member 3 has a groove 302 at a position corresponding to the protrusion 103 or the connection portion 202.

Although the grooves 302 are formed at a plurality of locations, there are some locations, such as section a, where they are not formed.

This part a will be clarified later.

Furthermore, the common grounding member 3 is also attached to the edge 108 of the housing 1.
A groove 109 is formed corresponding to the groove 302 .

Here, the groove widths of the grooves 109 and 302 are equal to each other at the groove entrance portion, but at the portion near the groove bottom, the common ground member 3
The groove 302 is wider.

Note that the upper surface of the connection portion 202 of the contact 2 and the upper surface of the common ground member 3 are at approximately the same height, and the depths of the grooves 102 and 109 of the housing 1 are approximately the same, and the upper surface of the common ground member 3 is approximately the same height. The depth of the groove 302 is deeper than the load 109 of the housing 1.

Now, to connect a flat cable to this connector,
The top surface of the connection part 202 of the contact 2 and the common ground member 3
A predetermined flat cable 4 whose upper surface has been previously coated with solder and whose coating has been peeled off for an appropriate length is placed on this connector, and then a cover 5 is placed over the connector as shown in FIGS. 2 and 3.

The arm 501 of the cover 5 engages with a raised flap 110 on the side surface of the housing 1, and is prevented from being removed.

The cover 5 combined with the housing 1 in this way is attached to the fourth
As shown in the figure, a part 502 for pushing the signal conducting wire S into the groove 109, a part 503 for pushing the grounding wire G into the groove 102 as shown in FIG.
Holes 504 and 505 corresponding to the top surface of 02 and the top surface of the common ground member 3, and grooves 506 corresponding to the signal conductor X to be grounded (see Figures 2 and 3)
It has

In this example, the conductor arrangement is GSGGS...
・It is 5GGSG, but G5G5...5
It may be GSG.

Next, as shown in FIGS. 4 and 5, a heating iron 6 with a flat bottom surface is attached to the conductive wires protruding from the holes 504 and 505 of the cover 5.
to melt the pre-coated solder, connect the signal conductor S to the connection part 202, the ground conductor G to the common earth member 3, and connect the signal conductor X to be grounded to the connection part 20.
2 and the common ground member 3, respectively, by soldering.

Further, an unnecessary portion of the cable 4 is cut off by a cutting tool 7 on one side of the connector.

Even after cutting, the groove 10 of the edge 108 of the housing 1 remains intact.
Since the movement of the signal conductor S fitted in the groove 109 is restricted by the inner surface of the groove 109, short circuits and contact with the common ground member 3 can be prevented.

Note that the contact to which the signal conducting wire X to be grounded is connected functions as a grounding contact, similar to the contact to which the tongue piece 301 of the common grounding member 3 is connected.

Furthermore, in order to prevent the tension or bending force applied to the cable 4 from being applied directly to the connection part, a strain relief 8 that engages with the protrusion 111 is used, and the cable 4 is shown in a state in which the exit position is upward. and shown in FIG.

As explained above using the embodiments, according to the present invention,
To obtain a connector which can distinguish and reliably connect a signal conductor and a ground conductor without causing a short circuit between the conductors even for a narrow pitch flat cable.

Also, according to this connector, there is a groove in which the signal conductor can be inserted without touching the common ground member.
By locating the signal conductors in this groove, it is possible to prevent the signal conductors from short-circuiting each other or from being connected to a common ground member.

Therefore, since the excess portions of the signal conductor and the ground conductor may be cut off at the same time at the same location, the connection work to the flat cable is particularly simple.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional and exploded perspective view of the connector according to the present invention, Fig. 2 is a perspective view showing the relationship between the connector, flat cable, and cover, and Fig. 3 is a partial plan view. , Figure 4 is a cross-sectional view of IV-■, and Figure 5 is a cross-sectional view of ■-■.
A cross-sectional view, FIG. 6 is a perspective view of a state in which a strain relief is used, and FIG. 7 is a cross-sectional view. 1...Housing, 101...Contact assembly space, 102...Groove, 103...
...Protrusion, 2...Contact, 201...
...Contact part, 202... Connection part, 3...
・・Common grounding member, 301 ・・Tanguage piece, 4・・
...Flat cable, S...Signal conductor,
G...Grounding conductor, 5...Cover, 6.
... Heating tool, 7... Cutting tool, Death...
...Strain relief.

Claims (1)

[Scope of utility model registration request] In a connector connected to a flat cable having a conductor wire used as a signal wire and a conductor wire used as a ground wire, a plurality of protrusions arranged in a row at intervals from each other and a housing edge extending along the side of the arrangement of the protrusions a plurality of conductive contacts having a wiring connection portion mounted on the tip of the protrusion and incorporated into the housing; and a common grounding member assembled to the edge of the housing. , each of the common ground member and the housing edge has a groove at a position corresponding to the protrusion, and the inner surface of at least the bottom of the groove of the common ground member is located outside the inner surface of the groove of the housing edge. The conducting wire used as the signal line has a longitudinally intermediate portion connected to the connection portion, and one end of the conductive wire is located at the bottom of the groove in the housing edge, and the other end is located at the bottom of the groove in the housing edge. is pulled out to the opposite side from the common ground member, and on the other hand,
A connector connected to a flat cable, characterized in that a conducting wire used as the grounding wire is connected to the common grounding member and drawn out through the mutual spacing between the plurality of projections.