JPH04257013A - Shared cable - Google Patents

Abstract

PURPOSE:To immediately switch a straight connection to a cross connection by providing a changeover switch at a connector. CONSTITUTION:Two RS-232C special connectors 1a and 1b are electrically connected with each other by an RS-232C special cable 2. Two LED 3a and 3b, one changeover switch 4, and a compact botton battery 5, are incorporated in each connector 1a and 1b. The connection is switched in each connector 1a and 1b by moving the changeover switch 4, and the straight connection is switched to the cross connection. Moreover, at the time of switching the cross connection to the straight connection by the changeover switch 4, an LED 3a is turned on by using the battery 5 as a power source, and the connection state is displayed. Then, at the time of switching the straight connection to the cross connection by the changeover switch 4, an LED 3b is turned on, and the connection state is displayed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to connection cables for computer equipment, and more particularly to shared cables.

0002

[Prior Art] Conventionally, there are two types of RS-232C cables: a cross cable for connecting terminal computers, and a cross cable for connecting a computer and a modem. It became.

0003

[Problem to be solved by the invention] The above-mentioned conventional RS-
232C cables have the same appearance, and it is generally impossible to tell whether they are cross or straight just by looking at them from the outside, so there are cases where the wrong cable is used and data cannot be transmitted normally. In addition, host computers, front-end processors, terminal equipment, and multiplexing equipment (Digital/Multiplex/Equator)
ipnent), etc., it was sometimes difficult to decide whether to use a cross cable or a straight cable, so there was a drawback that both were prepared and tested. Another disadvantage is that if the wrong cable is prepared, the connector must be disassembled, the connections between each wire in the cable and the connector pins must be temporarily cut, and replaced.

[0004] An object of the present invention is to provide a shared cable that solves the above problems.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the common cable according to the present invention includes a pair of connectors, a connection cable that electrically connects the pair of connectors, and a connection cable built in the connector and connected to the connector. It has a changeover switch that switches the cable connection state between straight connection and cross connection.

[0006] The device also includes a display element for switching and displaying the connection state by the changeover switch.

[0007] Furthermore, the display element is an LED, and the LED
The connector has a power source for driving D.

[0008]

[Operation] Selector switch 4 built into connectors 1a and 1b
This switches the connection state between straight connection and cross connection.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings. FIG. 1 is a configuration diagram showing one embodiment of the present invention. In the figure, 1a and 1b are RS-232C special connectors, and 2 is two RS-232C special connectors 1a and 1.
b This is a special RS-232C cable that electrically connects each other.

[0010] Each connector 1a, 1b has two LEDs.
(Light emitting diodes) 3a, 3b, one changeover switch 4, and a small button battery 5 are built-in.

By moving the changeover switch 4, the connections within each connector 1a, 1b are switched between straight connection and cross connection. Furthermore, when the changeover switch 4 is switched to the straight connection state, the LED 3a lights up using the battery 5 as a power source to display the connection state, and when the changeover switch 4 is switched to the cross connection state, the LED 3a lights up to display the connection state.
D3b lights up to display its connection status.

0012

Effects of the Invention As explained above, the present invention improves the conventional R
At the connector of the S-232C cable, there is a selector switch and
By installing the display element, the RS to be prepared
There is no need to consider whether the -232C cable is straight or cross, and there is also no need to distinguish between the two when manufacturing the cable. Furthermore, since the cable has a changeover switch on both ends, even if the cable is long, the changeover after installation can be done only once, regardless of which connector side it is connected to.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

[Explanation of symbols]

1a, 1b RS-232C special connector 2 RS
-232C special cables 3a, 3b LED (display element) 4 Selector switch 5 Button battery

Claims (3)

[Claims] Claim 1: A connector comprising a pair of connectors, a connection cable that electrically connects the pair of connectors, and a changeover switch that is built into the connector and switches the connection state of the connection cable between straight connection and cross connection. A shared cable featuring: 2. Claim 1, further comprising a display element that switches and displays the connection state of the changeover switch.
Shared cables listed in . 3. The display element is an LED, and the LED
3. The shared cable according to claim 2, wherein said connector has a power source for driving said connector.