JPS628092Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an expansion cable used when adding equipment.

Conventionally, one method of connecting multiple devices using a cable with a connector is a cable in which the corresponding pins of three or more connectors are connected to each other (generally called the daisy chain method or the imozuru method). There is a method to use.

In this case, the connection configuration will be as shown in FIG.
When adding device 3 to a system to which devices 1 and 2 are connected, conventionally one of the following two connection configurations has been used.

In the first configuration, cables that can connect four devices 1, 2, 3, and 4 are prepared in advance, and the connectors for connecting devices 3 and 4 are left unused. Devices 3 and 4
When adding more, these unused connectors are sequentially used. However, in such a configuration, it is always necessary to pre-equip the maximum number of connectors that can be connected, but these pre-equipped connectors are often not used, resulting in unnecessary costs. There is a drawback.

In the second configuration, both devices are connected by a cable with a connector that connects only devices 1 and 2, and when adding devices 3 and 4, the cable connecting devices 1 and 2 is removed and a separate cable is prepared. This is a configuration in which the cables connecting devices 1 to 4 are replaced. In this configuration, it is possible to reuse the cable connecting devices 1 and 2, but the quality will deteriorate, the procedure for reuse will be complicated, and the cost required for the procedure will be incurred. They are often discarded. Furthermore, when adding devices 3 and 4, not only device 2 but also device 1
Also, the cable must be removed, which becomes a big problem if the cable arrangement within the device is complicated, and the time required for expansion increases.

The object of the invention is to provide an expansion cable which eliminates the above-mentioned drawbacks.

Another object of the present invention is to provide an expansion cable that can reduce the time and cost required for modification by limiting the number of devices to be repaired during expansion to as few devices as possible.

The expansion cable of the present invention includes a plurality of male or female connectors of the same type, a signal line connecting these connectors, and at least one end of the expansion cable consisting of the signal line and the plurality of connectors. and a connector of a different type from that of the plurality of connectors connected to the corresponding signal line portion.

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 2 is a perspective view showing an embodiment of the present invention.

In the figure, the present embodiment includes a plurality of female connectors 30 each having a plurality of pin contact portions 40,
Male connector 20 having multiple connection pins 41
and a plurality of connection lines connecting the corresponding pin contact portions 40 and connection pins 40 of each connector 20 and 30.

Consider the case where the device 13 and the device 14 are connected to a system in which the device 15, the device 11, and the device 12 are connected as shown in FIG. 3a. As shown in FIG. 3b, when expanding, remove the female connector 31 connected to the device 12,
This connector 31 is connected to the male connector 20 of this embodiment.
By connecting one of the female connectors 30 to the male connector of the device 12, and further connecting the other female connector 30 to the devices 13 and 14, no operation can be performed on the devices 11 and 15. Expansion can be done without any problems.

As described above, the present invention has the advantage that it is possible to easily expand the number of devices at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing a conventional connection configuration, FIG. 2 is a perspective view showing an embodiment of the present invention, and FIGS. 3a and 3b are diagrams for explaining an embodiment of the present invention. In the figure, 1 to 4, 11 to 15...device, 2
0... Male side connector, 30, 31... Female side connector.

Claims (1)

[Claims for Utility Model Registration] A plurality of male or female connectors of the same type, a signal line connecting these connectors, and at least one end of an expansion cable consisting of the signal line and the plurality of connectors. An expansion cable comprising: a connector of a different type from the plurality of connectors connected to a signal line portion corresponding to the connector.