JPH0334061Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a connector for a flat cable, which is provided with a contact for connecting a signal line of the flat cable and a contact for connecting a ground line.

Prior Art As the above-mentioned flat cable, one is known in which a ground wire is inserted and coated between each signal line in order to prevent crosstalk between signal lines running in parallel at minute pitches. Furthermore, when a dedicated grounding wire is not provided, a connection form is often adopted in which one of the adjacent core wires is used as a signal wire and the other is used as a grounding wire.

Conventionally, methods for short-circuiting this connection wire include exposing the ground wire from the flat cable terminal and soldering it to the short bar, or equipping the connector with a connecting contact plate made of a common base material to capture the ground wire. Proposed.

Problems to be solved by the invention However, in the former case, the soldering work is complicated, and if the core wire is exposed at a location other than the terminal end of the cable, there is a risk that the cable will be cut. In the latter case, it is possible to press-fit the ground wires all at once, but a special mechanism is required to ground the connecting contact plate to the mating connector or wiring board, and in addition, the grounding position of the connecting contact plate is fixed. However, depending on the grounding position of the mating connector or wiring board, it may not be compatible, resulting in a lack of compatibility.

The present invention provides a connector for flat cables in which the connection of the signal line and the ground wire and the grounding mechanism thereof can be formed immediately by simply press-welding the flat cables all at once, and the grounding point can be selected as desired.Problems The present invention relates to a connector for flat cables that solves the above-mentioned problems, and as a means thereof, a grounding contact and a signal contact are embedded in separate connector substrates, and a connector substrate in which the grounding contact is embedded. When stacked on a connector base in which a signal contact is embedded, the signal contact is inserted into a contact insertion hole provided in a connector base having a grounding contact, and both contacts are arranged side by side on the same base; Further, the connector base in which the signal contacts are implanted is provided with a shover, and the short-circuit bar is provided with a number of shorting pieces, any of which can be bent to adjust the connection state with any contact among the signal contacts. The grounding contact and the short bar are connected to each other when the two connector bases are stacked on top of each other.

Effects According to the present invention, since the shot bar is equipped with a shorting piece corresponding to each signal contact,
A common grounding contact can be formed at any position by selecting one of the shorting pieces and connecting it to the selected signal contact.

In addition, the signal contact and the short bar are connected as described above using the short circuit piece, and the connector base in which the grounding contact is embedded is stacked on the connector base on which the signal contact and the short bar are connected, and the grounding contact is placed on the connector base. It is easy to assemble by simply capturing the shot bar with the contacts, and it is easy to form a ground circuit between the ground contact and the selected signal contact via the shot bar.

Furthermore, by stacking the connector base having the ground contact on the connector base having the signal contact and the short bar, the ground contact and the short bar can be connected, and at the same time, the signal contact has the ground contact. By inserting the contacts into the contact insertion holes provided in the connector base, it is possible to appropriately form the side-by-side state of both contacts for batch pressure welding of the flat cable, and as a result of the above process, the signal wire and ground wire can be immediately connected by simply pressure welding the flat cable all at once. connection and its grounding mechanism can be formed,
A flat cable connector can be provided in which the grounding point can be arbitrarily selected.

Embodiments Embodiments of the present invention will be described below with reference to FIGS. 1 to 5.

As described above, the flat cable connector includes the grounding contact 1 and the signal contact 2.
The signal contact 2 is the signal line S of the flat cable 4
The grounding contact 1 captures the grounding line G inserted between each signal line S and establishes an electrical connection with each of the signal lines S.

Further, a short-circuit bar 3 is provided for short-circuiting each of the grounding contacts 1, and the short-circuiting bar 3 is provided with a short-circuiting piece 3a corresponding to each signal contact 2,
Any one of the shorting pieces 3a is bent and connected to an arbitrary signal contact 2 to form a common grounding contact 2'.

Both the contacts 1 and 2 press-fit each core wire extending through the sheath of the flat cable 4 and extend into the inside of the sheath between the contact pieces and elastically capture it. Such a contact has a pointed tip and has at least two pressure contact pieces arranged in parallel, forming a gap for press-fitting the core wire between the contact pieces. The illustrated contact has three pressure contact pieces arranged in a staggered manner, and the core wire is press-fitted and captured so as to pass between the first and second contact pieces and between the second and third contact pieces.

Both contacts 1 and 2 are connected to each other at their bases and have implanted portions 5 and 6 at the connecting portions. The signal contact 2 is connected to the flat cable 4 by the implanted portion 6.
The male or female contacts 9, which are implanted in the connector base 8 at the same pitch as the signal wires S and extend from the implanted portion 6 to the side opposite to the signal contacts 2, are extended into the implantation hole or out of the hole. stand out.

On the other hand, a connector base 7 having a contact insertion hole 10 through which the signal contact 2 passes is provided, and the ground contact 1 is provided on the connector base 7.
is planted with its planting part 5 at the same pitch as the grounding wire G of the flat cable 4.

Also provided is a cable holding cover 11 for pushing the flat cable 4 into the grounding and signal contacts 1 and 2. The cable holding cover 11 has signal contact insertion holes 1 for receiving the ends of both contacts 1 and 2 that pierce the flat cable 4 and protrude, respectively.
2b and a grounding contact insertion hole 12a.

The short bar 3 is made of an elongated plate material, and a plurality of shorting pieces 3a corresponding to the signal contacts 2 are integrally punched out and arranged at intervals on one longitudinal side of the short bar 3.

The short-circuit bar 3 is arranged parallel to the row of signal contacts 2, and a predetermined short-circuit piece among the short-circuit pieces 3a is bent toward the signal contact 2 as shown in FIG. 2, and its tip is connected to the signal contact. Connect to the terminal piece 13 provided on the base. For example, as shown in the figure, a terminal piece 13 that also serves as the implanted part 6 is provided protrudingly in parallel with the shot bar 3, and the terminal piece 13 is provided with a recessed notch 14 that receives the shorting piece 3a bent as described above. The shorting piece 3a is engaged with the recessed notch 14 and soldered or welded. In this way, an assembly of the signal contacts 2 and the short bar 3 is formed using the connector base 8 as a carrier, and the signal contacts 2
A mechanism is formed in which any one of them is used as a common grounding contact 2'.

By the above assembly, at least the long side of the short-circuiting bar 3 opposite to the side on which the short-circuiting piece 3a is arranged is exposed on the surface side of the connector base 8.

The connector base 7 having the ground contact 1 is stacked on the connector base 8 configured as described above, and the signal contact 2 is inserted into the contact insertion hole 10. Therefore, the grounding contact 1 and the signal contact 2 are formed in a state in which they stand side by side on the connector base 7, and are used for pressure-welding the signal line S and the grounding line G of the flat cable 4 at once. At the same time, the shot bar 3 is captured by each grounding contact 1. The grounding contact 1 has a catching part 1 of the shot bar 3 on its base part.
5.

As an example, the catching portion 15 is configured to hold the longitudinal edge of the shot bar 3 as shown in the drawing. 15a is a shot bar holding groove for holding the shot bar.

In this way, all the grounding contacts 1 are short-circuited at the short-circuit bar 3, and connected to any signal contact 2, that is, the common ground contact 2' via the short-circuiting piece 3a of the short-circuit bar 3.

Due to the overlapping of both connector bases 7 and 8, the short bar 3 is connected to the capture portion 15 of each grounding contact 2.
In order to capture the contact, the capturing portion 15 of each grounding contact 1 is made to protrude toward the overlapping surface side of the connector base 7,
Either insert this into the connector base 8 and sandwich the short bar 3, or as shown in the figure, make the short bar 3 protrude from the overlapping surface of the connector base 8, and connect the grounding contact 1 to the overlapping surface of the connector base 7.
A groove 16 is provided that crosses the implantation hole, and the shot bar 3 is received in the groove 16, and each ground contact 1 is inserted into the groove 16.
It is configured to be held between the capturing portions 15 of. Through the above steps, the flat cable connector is assembled.
As shown in FIG. 4, the flat cable 4 is held between the cable holding cover 11 and the cable holding plate 17 and pushed into the contacts 1, 2, 2'.

The cable holding plate 17 has contacts 1, 2, 2'
It has a contact insertion hole 21 that allows the insertion of
Cable holding cover 11 has contact insertion hole 12
The tips of the contacts 1, 2, 2' passing through the cable holding plate 17 are received into the insides of the contacts a and 12b. As described above, the flat cable 4 is stacked on the connector base 7 while being sandwiched between the cable holding cover 11 and the cable holding plate 17, and the contacts 1, 2, 2' that have passed through the cable holding plate 17 penetrate the flat cable 4, The grounding contact 1 captures the grounding wire G, and the signal contact 2 and the common grounding contact 2'
captures the signal line S. The core wire S' captured by the common grounding contact 2' is similar to the other grounding wires G,
It becomes a common ground bus.

In order to maintain the above-mentioned connection state, connector holding plates 18 are extended from both ends of the cable holding cover 11 along the side surfaces of the connector bases 7 and 8, and are brought into engagement with the side faces of the connector bases 7 and 8. As the engagement means, for example, a protrusion 19 is provided on one side of the connector base 8.
Recesses 20 are formed in each of the connector holding plates 18, and the two are elastically engaged.

The above connector can be implemented not only when the flat cable has a dedicated grounding wire between each signal wire, but also when the signal wire is used alternately for grounding and signal use in a flat cable that has only a signal wire. .

Effects of the invention As explained above, the present invention is a connector equipped with a large number of grounding contacts and signal contacts that penetrate a flat cable, capture the signal line and the grounding line, and make a connection. By stacking the connector board holding the signal contacts on the connector board holding the signal contacts, the grounding contacts described above are short-circuited with a short-circuit bar.
A common grounding contact can be formed by selecting one of the shorting pieces corresponding to each signal contact provided on the shot bar, bending it out, and connecting it to the selected signal contact. The signal contact can be used as a common grounding contact, and a grounding mechanism according to design specifications can be formed at any time.

Also, the signal contact and the short bar are connected as described above using the shorting piece, and a connector base having a grounding contact is stacked on the connector base in such a connected state, and the contact provided on the base is stacked. A flat cable connector with the above grounding mechanism can be easily assembled by simply inserting the signal contact into the insertion hole and simultaneously capturing the shot bar with the grounding contact, and by simply press-welding the flat cables together with the connector. A ground circuit can be easily and reliably formed between the ground contact and the selected signal contact via the short bar.

Also, when a connector base that has a grounding contact is stacked on a connector base that has a signal contact, the signal contact is inserted into the contact insertion hole provided in the connector base that has a grounding contact, and the flat cable is bundled together. A connector for flat cables that can appropriately form both contacts for pressure welding in parallel, and that allows connection of the signal line and ground wire and its grounding mechanism to be formed immediately by simply pressure welding the flat cables all at once, and allows the selection of the grounding point as desired. can be provided.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing the grounding mechanism assembled with contacts and a shot bar before forming a common grounding contact, and FIG. Figure B is a perspective view showing a state in which a grounding contact is formed; Figure B is a perspective view showing a state in which a signal line and a grounding line are pressed together by the grounding mechanism; Figure 3 is an exploded view showing the connector mechanism that constitutes the grounding mechanism. FIG. 4 is an assembled perspective view showing the same press-contact state, and FIG. 5 is a sectional view taken along the line A--A in FIG. 4. 1... Grounding contact, 2... Signal contact, 2'... Common grounding contact, 3... Short bar, 3a... Shorting piece, 4... Flat cable, 7, 8... Connector base, 13... ...terminal piece,
15... Capturing unit.

Claims (1)

[Scope of utility model registration request] A large number of signal contacts 2 to be connected to the signal line of the flat cable are implanted in the connector base 8, a large number of ground contacts 1 to be connected to the ground wire of the flat cable are implanted in the connector base 7, and the signal contacts 2 to the connector base 7 are implanted. A contact insertion hole 10 is provided through which the ground contact 2 passes, and the connector base 8 is further provided with a short bar 3 for shorting the respective grounding contacts 1, and one of the short bars 3 is bent to form an arbitrary signal contact. The signal contacts 2 are provided with a large number of shorting pieces 3a that can be connected to the connector base 7, and when the connector base 7 is stacked on the connector base 8, the signal contacts 2 are connected to the contact insertion holes 1 of the connector base 7.
0, a signal contact 2 and a grounding contact 1 are arranged side by side on a connector base 7, and a connection state between the grounding contact 1 and the short bar 3 is established at the same time.