JPS6035978Y2 - 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, in the case of thin pitch flat cables with narrow conductor spacing, it is difficult to accurately connect the conductors to the contacts of the connector, especially when connecting the signal conductor and the ground conductor separately. The work is extremely difficult, inefficient and uneconomical.

Therefore, an object of the present invention is to provide a contact that can distinguish the signal conductor and the ground conductor and connect them reliably and with simple construction even for a narrow pitch flat cable.

A further object of the present invention is to provide a connector in which the structure of the connecting portion is extremely simple after the connection process to the end of the flat cable is completed, and short circuits between conductive wires can be more reliably prevented.

According to the present invention, in a connector connected to a flat cable having a conducting wire used as a signal wire and a conducting wire used as a grounding wire, an insulating housing having a plurality of protrusions arranged in a row at intervals from each other; A plurality of conductive contacts each having a terminal end mounted on the tip of a protrusion and incorporated into the housing, and a conductive contact extending along the side of the arrangement of the plurality of protrusions and assembled into the housing. a common grounding member, the conducting wire used as the signal line is connected to the connection portion and drawn out to the opposite side from the common grounding member, while the conducting wire used as the grounding wire is connected to the common grounding member. In addition, there is obtained a connector to be connected to a patented cable, which is characterized in that it is pulled out through the mutual spacing between the plurality of projections.

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 includes a pair of contact portions 201, 201 at one end;
It has a curved connection part 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 made 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 180 degrees about the contact axis. Moreover, the connection portions 202 are placed alternately on the plurality of protrusions 103.

Furthermore, the base portion 20 of the connection portion 202 of the contact 2
4 is made narrow so as not to protrude to a 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 on both sides are placed on the connection parts 202 of the contacts 2 at both ends, and the soldering is fixed.

This common grounding member 3 includes a protrusion 103 or a connection portion 202.
It has a groove 302 at a position corresponding to .

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.

Further, a groove 109 is formed in the edge 108 of the housing 1 in correspondence with the groove 302 of the common ground member 3.

Note that the top surface of the connection portion 202 of the contact 2 and the top surface of the common ground member 3 are at approximately the same height, and the groove 102
, 109, and 302 have approximately the same depth.

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 coated with solder in advance and whose coating has been peeled off for an appropriate length is placed on the connector fixed to the positioning jig 5 as shown in FIG. 2, and the cable conductor shown in FIG. The forming jig 6 is aligned and pushed so that the guide pin 501 of the positioning jig 5 enters the guide hole 601 thereof.

The cross-sectional state at this time is as shown in FIGS. 4 and 5, and the cable 4 under the forming jig 6 is as shown in FIG.
The conductor wire is molded into the shape.

That is, the signal conductor S is in contact with the upper surface of the connection portion 202 of the contact 2 and is pushed into the bottom of the groove 109,
Further, the grounding conductor G is in contact with the top surface of the common grounding member 3 and is pushed into the bottom of the groove 102, and the signal conducting wire is in contact with.

Here, the forming jig 6 is provided with a groove 602 for escaping the signal conducting wire X that is about to be grounded.

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

Next, a heating tool 7 as shown in FIG. 3 is brought into contact with the conductive wires S and G through the opening 603 of the forming jig 6.

This contact position is shown by a chain double-dashed line in FIGS. 3 and 4.

By heating in this manner, the pre-coated solder is melted, and the signal conductor S is connected to the connection portion 202, and the ground conductor G is connected to the common earth member by soldering.

However, the signal conductor X to be grounded is connected to both the connection portion 202 and the common ground member 3 by soldering.

Thereafter, as shown in FIG. 6, the excess conductor is cut off using cutting tools 8 and 9.

At this time, the upper surface of the connection portion 202 and the common ground member 3 serves as a cutting board.

Since the signal conductor S is fitted into the grooves 109 and 302,
One cutting tool 8 cuts only the ground conductor G.

The other cutting tool 9, of course, cuts only the signal conductor S.

Therefore, no unnecessary cut ends or extensions of the signal conductor S remain after cutting.

Note that for the signal conductor X to be grounded, an escape groove 901 is provided in the cutting tool 9 as shown in FIG.
2. Make sure not to cut it above.

Figure 8 shows the state in which the wiring work has been completed.

According to FIG. 8, the end of the signal conductor is connected to the surface of the connection part 202, and the end of the ground conductor is connected to the surface of the common ground member 3, and a part slightly away from the end is connected to the surface of the connection part 202.
You can see that it is inserted inside.

Therefore, according to this wiring structure, the signal conductor and the ground conductor are placed on different levels, and there are no unnecessary cut ends or extensions of the conductor, which reliably prevents short circuits between the conductors. .

Further, the end of the signal conducting wire to be grounded is connected to the surface of the common grounding member 3, and a portion slightly away from the end is connected to the surface of the connection portion 202.

Therefore, the contact to which the signal conductor to be grounded is connected functions as a grounding contact in the same way as the contact to which the tongue piece 301 of the common grounding member 3 is connected.

Thereafter, a cover 10 shown in FIG. 9 is placed over the ground to protect the grounded portion.

The unevenness on the holding surface side of the cover 10 has a shape that corresponds to the unevenness on the connector connection side, and is designed to prevent the conductor inside from moving due to vibrations, shocks, etc. after being covered.

Note that 1001 is an open portion provided in a portion corresponding to the conducting wire X.

When the cover 10 is placed over the connector as shown in FIG. 10, the arm 1002 engages with the protrusion 110 on the side surface of the housing 1 to prevent removal.

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 leaf 11 that engages with the protrusion 111 is used, and the cable 4 is shown in the state shown in FIG. 11 with its exit position facing upward. show.

Its cross section is as shown in FIG.

Further, the longitudinal section of the wire connection portion is as shown in FIG.

According to FIG. 13, the portion fitted into the ground conductor (7) 1102 is blocked from upward movement by the convex portion 1004 of the cover 10, and the signal conductor and the ground conductor are placed in separate rooms. It will be seen that it can be contained in

As explained above using the embodiments, according to the present invention,
It is possible to obtain a connector that can distinguish signal conductors and ground conductors and connect them reliably even to thin pitch flat cables.

This connector also makes it easy to connect to the end of a flat cable, and since no unnecessary extensions of the conductor remain after connection, short circuits between conductors are more reliably prevented. be.

Furthermore, since there is no need to pay special consideration to the prevention of short circuits due to the extended portion of the conductor, the present invention can be implemented with a relatively simple structure.

[Brief explanation of the drawing]

Figure 1 is a partially cross-sectional and exploded perspective view of the connector according to the present invention, Figure 2 is a perspective view showing the relationship between the connector and a molded flat cable, and Figure 3 is a perspective view showing the connection work. A cross-sectional perspective view showing an example of the tool used, Figure 4 is a cross-sectional view along the ground conductor during conductor forming, Figure 5 is a cross-sectional view also along the signal conductor, and Figure 6 is a cross-sectional view of the ground conductor during conductor cutting. Figure 7 is a cross-sectional view along the signal conductor to be grounded, Figure 8 is a partially cutaway perspective view after the wiring work is completed, Figure 9 is a perspective view of the cover, and Figure 9 is a perspective view of the cover. FIG. 10 is a perspective view after the cover is attached, FIG. 11 is a perspective view with a strain relief in use, FIG. 12 is a cross-sectional view, and FIG. 13 is a longitudinal cross-sectional view of a main part of the connection portion. DESCRIPTION OF SYMBOLS 1...Housing, 101...Contact installation 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...Ground conductor, 5...Positioning jig, 6...Cable conductor forming jig, 7...
・Heating tool, 8, 9... Cutting tool, 10...
...Cover, 11...Strain relief.

Claims (1)

[Scope of utility model registration request] A connector to be connected to a flat cable having a conductive wire used as a signal line and a conductive wire used as a grounding wire, which includes an insulating housing having a plurality of protrusions arranged in a row at intervals from each other, and an insulating housing mounted on the tips of the protrusions. A plurality of conductive contacts each having a connection portion and assembled into the housing, and a conductive common grounding member extending along the side of the arrangement of the plurality of protrusions and assembled into the housing. The conducting wire used as the signal line is connected to the connection portion and drawn out to the opposite side from the common grounding member, while the conducting wire used as the grounding wire is connected to the common grounding member and connected to the plurality of protrusions. A connector connected to a flat cable, characterized in that it is drawn out through a mutual spacing of.