JPH059659Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a core wire sorting device for multi-core cables used when connecting multi-core cables and connectors used in computers, facsimiles, etc.

[Prior art]

Multi-core cables are used in electronic devices such as computers and facsimiles to transmit and receive data between the devices. Similar cables are also used to transmit and receive signals between circuit boards in electronic devices. In order to actually connect such multi-core cables to electronic devices or circuit boards, connectors are used. The connection between this multi-core cable and the connector is made by connecting each of the core wires that make up the multi-core cable to the pins (terminals) of the connector.
The numbers are matched and the connection is made by bonding using solder or the like.

Therefore, when connecting a multicore cable and a connector, the relationship between each core wire and pin number must be known in advance.

Conventionally, this connection relationship has been achieved by configuring the sheathing of each core wire in a different color and displaying pin numbers on the connector, so that connections are made based on the combination of color and number.

On the other hand, some multicore cables do not have their core wires coated in different colors, and have core wire sheaths of the same color. In such cases, the multicore cable and connector are connected while checking the connection relationship of each core wire using a continuity tester.

[Problems with conventional technology]

The core wire connection of the conventional multicore cable as described above has the following problems.

B. Even if the core wires of a multi-core cable are not colored differently, or even if the core wires are colored differently, when the number of core wires increases, it becomes difficult to visually distinguish the core wires, resulting in work efficiency. is poor, and the probability of misconnection increases. In such a case, the connection becomes difficult.

(b) In addition, when using a continuity tester to sort the core wires of a multicore cable whose core wires have the same color sheathing, in the worst case, it is necessary to repeat the continuity test for the number of core wires because one core wire is to be sorted. This is a very labor-intensive and time-consuming task.

[Purpose of invention]

In view of the above-mentioned conventional drawbacks, the present invention is a multi-core cable core wire sorting device that can easily distinguish connection relationships even when the core wires of multi-core cables are not colored and that does not cause incorrect connections. The purpose is to provide

[Key points of the idea]

According to the present invention, the above object includes: a constant current output circuit that outputs a current of a predetermined current value; a series resistance circuit to which a constant current is supplied from the constant current output circuit and having a plurality of resistors with equal resistance values; a resistor element having one end connected between each resistor of the series resistor circuit; and a connector member having a terminal to which the other end of the resistor element is connected and a voltage generated between the resistors of the series resistor circuit is supplied; This is achieved by providing a multi-core cable core wire sorting device comprising: a voltage measuring device that measures the value of the voltage supplied to the core wire of the multi-core cable connected to the terminal of the connector member. Ru.

[Example of idea]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a diagram illustrating the principle structure of a multicore cable core sorting device according to the present invention. In the figure, the structure of the part surrounded by a dotted line is the core wire sorting device 1, and the structure of the other parts is the multicore cable 2 and connectors A and B for sorting the core wires to be processed. The core wire sorting device 1 includes a voltmeter 3, a contact 4, a socket 5 of the connector A described above, and resistors r ₁ to _{r o} and R ₁ to _{R o} . The resistors r ₁ to _{r o} are each connected in series, and the other end of the resistor r _o is connected to a constant current control circuit, which will be described later. These resistors r ₁ to _{r o} all have the same resistance value, and when a constant DC current (i) is passed through each resistor r ₁ to _{r o} , the voltage drop value is the same, so each resistor r ₁ , r ₂ , between resistors r ₂ and r ₃ , ...at the connection point between resistors r _o-1 and r _o ,
For example, it is possible to sequentially obtain voltage values of 10 mV, 20 mV, 30 mV, ...10 _o mV with equal potential differences. This voltage is input to the corresponding pin (terminal) of the connector A socket 5 via the resistors R ₁ to _{R o} connected to the connection points between adjacent resistors r ₁ to _{r o} , respectively.

Further, the contactor 4 is connected to the voltmeter 3,
By applying a contact 4 to each core wire 2' in the multicore cable 2, data on the voltage value of the core wire 2' is detected. In other words, each core wire 2' in the multicore cable 2 is connected to the connector A (however, since the core wires in the multicore cable 2 are coated in the same color, which core wire is connected to which connector A) (can be connected to a pin) into the connector A socket 5 described above, and the data of each voltage value is output from the connector A socket 5 to the multicore cable 2 (connection 2') via the connector A. , the contact 4 detects this voltage value data and displays this data on the voltmeter 3.

On the other hand, each pin of the connector B to which each core wire 2' is connected is assigned a pin number, for example, pin numbers 1 to n are assigned from the right side to the left side in the figure. Then, the core wire 2' measured on the pin with the number that corresponds to the voltage value measured by the contactor 4 and the voltmeter 3.
Bonding is performed using solder or the like.

Now, FIG. 2 shows a specific circuit for performing the core wire sorting as described above. In this figure, circuits that are the same as those in FIG. 1 are given the same numbers. However, a digital voltmeter 3' is used as the voltmeter 3.
Between the connector A socket part 5 and the connector A to be processed, there is a difference between the connector A socket part 5 and the connector A to be processed, since the pin spacing and number of pins are not always the same. , connectors C and D as the relay circuit 6 are connected and used. Also,
A constant current control circuit 7 is connected to one end of the resistor _r as a circuit that supplies a constant current (for example, 10 mA) to the resistors r 1 to r _o .
is connected, and a DC power supply 8 capable of generating a maximum DC voltage of 5V as a power supply is connected to a constant current control circuit 7 and a resistor.
Connected between _r1 .

On the other hand, it is assumed that all of the resistors r ₁ to r _o have a resistance value of 1Ω, and that all of the resistors R ₁ to _{R o} have a resistance value of 10 kΩ. The resistors R ₁ to _{R o} are connected to prevent the measurement from being adversely affected even if the ends of the core wires 2' come into contact with each other during measurement.

The circuit operation of the multi-core cable sorting device configured as described above will be described below.

First, a predetermined voltage is supplied to the constant current control circuit 7 by an operator turning on a switch (not shown) of the DC power supply 8 of the core wire sorting device. The constant current control circuit 7 causes a constant current of 10 mA to flow from the supplied voltage to a series circuit of resistors r ₁ to _{r o} . Here, the resistance r ₁ ~
Since the resistance value of r _o is each 1Ω as mentioned above, the terminal voltage V between each resistor r ₁ to _{r o} is 10 mV (10 (mA) ×
1 (Ω)). Therefore, in this case, the voltage value at the connection point between resistors r ₁ and r ₂ is 10 mV, and a voltage value of 10 mV is applied to the pin (not shown) on the right side of the connector A socket 5 in the figure through the resistor R ₁ . applied. Also, the resistance r ₂
The voltage value at the connection point of and _r3 is 20 mV, and the voltage value of 20 mV is applied to the second pin (not shown) from the right side in the figure of the connector A socket portion 5 through the resistor _R2 . Further, similarly, a voltage of 30 mV _to 10 0 mV is applied to the connector A socket portion 5 via resistors R ₃ to _Ro , respectively.

In this way, the voltage applied to the pins sequentially from the right side to the left side of the connector A socket 5 is a value that increases from 10 mV to 10 _o mV in steps of 10 mV. Then, this voltage value data is output from the connector D via the relay circuit 6 as voltage value data that matches the pin arrangement of the connector A. That is, the connector A can be inserted into the connector D that is suitable for the difference in pin spacing and number of pins of the connector A to be processed by the relay circuit 6.

The operator then inserts the connector A connected to the multicore cable 2 into the connector D. With this work,
Core wire 2' exposed from one end of multicore cable 2
A corresponding voltage value is applied to . The operator places the contact 4 on each core wire 2' and causes the digital voltmeter 3' to display the voltage value data of the core wire 2'. The digital voltmeter 3' has a minimum indication of
Therefore, the voltage data indicated by the digital voltmeter 3' is 20mV, 30mV,...
10 _o mV can be used as it is as the number of the core wire corresponding to the pin arrangement of connector D (connector A socket 5). For example, digital board meter 3'
If 10mV is indicated, it can be determined that the measured core wire 2' is the core wire to be connected to the right end pin of the connector A socket 5, and if the digital voltmeter 3' indicates 20mV, the measured core wire 2' is the core wire connected to the right end pin of the connector A socket 5. Part 5
It turns out that this is the core wire connected to the second pin from the right end of the core wire, and in the same manner, the number corresponding to the pin of each core wire 2' can be determined by the instruction of 30 mV to 10 _o mV.

Therefore, the operator can immediately determine the number corresponding to the pin of the core wire 2' to which the contactor 4 is applied, and can connect to the terminal of the connector B having the corresponding pin number. For example, if the pin arrangement of connector B is numbered 1 to n from the right side to the left side as described above, the number of the core wire 2' to which the contact 4 is applied is read with the digital voltmeter 3' and the corresponding connector is It can be easily bonded to the terminal with pin number B by soldering or the like.

As described above, connector B and multicore cable 2 can be easily and accurately connected by sequentially connecting core wires 2' to corresponding pins of connector B while reading the numbers of core wires 2' with digital voltmeter 3'. be able to.

In this embodiment, the relay circuit 6 is connected to FIG. 2 showing a specific circuit, but the connector A to be processed is
Of course, if it is possible to fit the connector A into the connector A socket 5, the connector A may be inserted directly into the connector A socket 5.

[Effect of idea]

As explained in detail above, according to the present invention, the data displayed on the digital voltmeter 3' (voltmeter 3) indicates the number corresponding to the number of pins of the connector to be connected, so it is possible to identify the core wire to be connected to the connector. It can be easily and accurately sorted, and incorrect wiring can be prevented.

In addition, even in the case of a 120-core multi-core cable, which is thought to have the largest number of core wires at present, the number of the highest core wire can be measured with a voltage of 1.2V according to the present invention.
This is a very useful device that allows you to connect connectors in a short time.

[Brief explanation of the drawing]

FIG. 1 is a basic configuration diagram of the multi-core cable core wire sorting device of this embodiment, and FIG. 2 is a specific measurement circuit diagram of the multi-core cable core wire sorting device of this embodiment. 1... Core wire sorting device for multi-core cable, 2... Multi-core cable, 2'... Core wire, 3... Voltmeter, 3'...
...Digital voltmeter, 4...Contact, 5...
... Connector A socket, 6 ... Relay circuit, 7 ... Constant current control circuit, 8 ... DC power supply, r ₁ ~ _{r o} , R ₁ ~ _{R o}
...Resistance, A-D...Connector.

Claims (1)

[Claims for Utility Model Registration] A constant current output circuit that outputs a current of a predetermined current value; A series resistance circuit to which a constant current is supplied from the constant current output circuit and having a plurality of resistors with equal resistance values; a resistor element having one end connected between each resistor of the resistor circuit; a connector member having a terminal to which the other end of the resistor element is connected and a voltage generated between the resistors of the series resistor circuit is supplied; A multicore cable core wire sorting device comprising: a voltage measuring device that measures the value of the voltage supplied to the core wires of the multicore cable connected to the terminals of the connector member.