JPS6314520B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiring location indicating and determining device suitable for wiring assembled wires in an automobile wiring harness or the like to predetermined locations of a connector without error.

Conventionally, when manufacturing automotive wiring harnesses, the wires were first cut to the required length, then both ends were terminated with the contact terminals of the connector, and then the terminals were inserted into the specified locations of the connector. It was done by doing. Therefore, almost all work is done manually, and mistakes often occur, especially when inserting a terminal into a connector into the wrong location. Additionally, this mistake was not detected during the wiring work, and it was only after the wiring was run through an inspection machine that it was discovered that there had been a mistake, resulting in the problem of having to redo the wiring from the beginning.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device that eliminates the problems that occur in conventional wiring work, that is, a device that not only specifies a wiring location but also determines whether the wiring is correct or incorrect after wiring and notifies the user of the problem. do.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below as illustrated in the accompanying drawings.

FIG. 1 is a block diagram of an apparatus according to the present invention, and an outline thereof will be explained below. In FIG. 1, the part where the wire 2 in question is connected to the connectors 4 and 6 is indicated by W. After wiring is completed, this portion W becomes a wire harness and is removed from the device. Connector 4 with n-pole connects each terminal A ₁ to _{A o}
are connected to corresponding inputs of the wiring location specifying circuit 8, respectively. The designation circuit 8 is connected to the designation circuit 14 in which the designation lights C ₁ to _{C o} are arranged corresponding to the terminal insertion holes of the connector 6, respectively. The designation circuit 8 is also connected to a determination circuit 10 that determines whether the wiring that has been done is correct or incorrect. The judgment circuit 10 is also connected to the connectors 4 and 6, and after wiring each terminal A ₁
~A _o and B ₁ ~ _{B o} are electrically connected. Further, the determination circuit 10 is connected to a notification circuit 12, and provides notification by visual or auditory means or both of the correct wiring or incorrect wiring at the time of each wiring.

When wiring, first one terminal of the electric wire 2 is inserted into each pole of the connector 4. Then for example
Give a signal to the terminal at the other end of wire ₂ of A1. This signal is preferably an induced voltage caused by touching the terminal with a finger. This signal is connected to terminal A ₁
is supplied to the corresponding input of the designation circuit 8 via. The designation circuit 8 then sends the output signal from the corresponding output to the designation circuit 14 on the one hand to the connector 4.
Indicator light indicating B ₁ of connector 6 corresponding to A _1
C1 is turned on, and on the other hand, the corresponding output is supplied to the corresponding input of the correct/incorrect wiring determination circuit 10. In response to this input, the determination circuit 10 selects the terminal of the connector 4.
Give signal to A ₁ . A ₁ −B ₁ between connectors
When the wiring of circuit 1 is completed, the determination circuit 10
The signal supplied from 0 to A ₁ is the terminal of connector 4.
A ₁ and wire 2 to connector 6;
The signal returned through the terminal _B1 is judged and the result is sent to the notification circuit 12, which lights up, for example, an OK lamp to indicate that the wiring is correct. Preferably, a buzzer is used to emit an instantaneous sound.
If the wiring is incorrect, for example, if the terminal at the other end of the wire 2 is inserted into B ₂ of the connector 6 or into A ₂ of the connector 4, the determination circuit 10 will determine that the wiring is incorrect. The notification circuit 12 lights up, for example, an NG lamp to indicate incorrect wiring. Preferably, a buzzer is used to emit a continuous sound at the same time as the NG lamp is turned on.

FIG. 2 is a diagram showing an example of the electric circuit of the device of the present invention. In FIG. 2, the same parts as in FIG. 1 are designated by the same reference numerals.

A designation circuit 8 for designating a wiring location includes a touch sensor 20 that generates an output only at a specific output terminal when a finger touches a certain input terminal. This touch sensor 20 itself has already been integrated into an IC and is a well-known device. The touch sensor 20 has one input and two outputs a and b which are electrically disconnected for each channel, and is of a type in which only one channel is always selected and output. The output a is for driving a lamp, and the output b is for outputting a logic signal. For example, when the first channel is selected, the output _a1 becomes an H level and the output _b1 becomes an L level.

Each of the inputs 1 to n of the designation circuit 8 is connected to the terminals A ₁ to _{A o} of the determination circuit 10, respectively. Outputs a ₁ to _ao of one of the two sets of outputs are connected to the wiring location indicating circuit 14, and outputs b ₁ to a of the other set are connected to the wiring location indicating circuit 14.
b _o is connected to the determination circuit 10 .

The instruction circuit 14 includes n number of indicator lights C ₁ -C _o constituted by, for example, light emitting diodes, and is arranged corresponding to the insertion openings of the terminals B ₁ -B _o to which wiring is to be performed.

Determination circuit 10 includes inverters I ₁ to I _o and receives a logic signal from designation circuit 8 . Inverter I ₁
The outputs of ~I _o are transistors T ₁₁ and T ₂₁ respectively
~Base of T _1o and T _2o , exclusive OR gate EX ₁
~One input of EX _o , and NAND gate NA ₁
~ Connected to one input of NA _o . The other input of the exclusive OR gate EX ₁ ~ _{EX o} is the transistor T ₁₁
Connected to the emitter of ~T _1o and terminal A ₁ ~ _{A o} . The other inputs of the NAND gates NA ₁ -NA _o are connected to the terminals B ₁ -B _o and the collectors of the transistors T ₂₁ -T _2o . The outputs of the exclusive OR gates _EX1 to _EXo are connected to respective inputs of the NOR gate _NR1 , which output is connected to one input of the NAND gate _NA12 . The collectors of transistors T ₂₁ ~ T _2o are
It is connected to each input of NOR gate NR ₂ , and its output is connected to the other input of NAND gate NA ₁₂ . The outputs of NAND gates NA ₁ to NA _o are connected to each input of NAND gate NA ₁₁ .

The notification circuit 12 includes a light emitting diode (OK lamp) L ₁ that lights up when the wiring is correct, a light emitting diode (NG lamp) L ₂ that lights up when incorrect wiring occurs, and a transistor T that drives these diodes. ₃ and T ₄ . The base of transistor T ₃ is connected to the output of NAND gate NA ₁₁ , and the base of transistor T ₄ is connected to the output of NAND gate NA ₁₂ .

Next, the effect will be explained. First, one end of the electric wire 2 is connected to the terminals A ₁ to A _o via the connector 4 . For example, when the other end of the electric wire 2 connected to terminal A ₁ is touched with a finger, the touch sensor 20 selects the first channel and outputs an H level signal from output a ₁ and an L level signal from output b ₁ . do. Therefore, the indicator light C ₁ arranged corresponding to the pole B ₁ of the connector 6 lights up, indicating that the other end of the electric wire 2 connected to the terminal A ₁ should be connected to the terminal B ₁ . do. The L level signal from the output _b1 of the touch sensor 20 is inverted by the inverter _I1 and applied to the base of the transistor _T11 . Therefore, the transistor _T11 becomes conductive and outputs an H level signal to its emitter.

The second touch sensor 20 that was not selected
H level signals are output from the outputs b ₂ to _{b o} of the n-th channels, and each inverter outputs an H level signal.
Each of the transistors T ₁₂ -T _1o is supplied with an L level signal to its base via I ₂ -I _o and remains non-conductive, and an L level signal is outputted to its emitter.

Since the exclusive OR gate _EX1 receives H level signals at its two inputs, it receives an L level signal at its output. exclusive OR gate
Since EX ₂ to EX _o each have an L level signal applied to their two inputs, an L level signal is applied to their output. Therefore, the NOR gate NR ₁
Since all inputs are at L level, output will be at H level.

The H level signal output from the inverter _I1 is also applied to the base of the transistor _T21 and one input of the NAND gate _NA1 . Since the other input of the NAND gate _NA1 is at L level, it outputs an H level signal. Since both inputs of the NAND gates NA ₂ to NA _o are at L level, they output H level signals. Therefore, NAND gate _NA11 outputs an L level signal. The NOR gate _NR2 , which receives the L level signal from the collector of each transistor _T21 to _T2o , outputs an H level signal, which is applied to the NAND gate _NA12 together with the H level signal provided by the NOR gate _NR1 . Therefore, NAND gate _NA12 outputs an L level signal. As a result, both transistors T ₃ and T ₄ do not conduct, and light emitting diodes L ₁ and L ₂ do not light up.

Next, when correct wiring is performed between terminals A ₁ and B ₁ (connection 21), the H level signal at the emitter of transistor T ₁₁ is applied to the collector of transistor T ₂₁ via terminals A ₁ and B ₁ . Since the base of this transistor _T21 is supplied with an H level signal, it becomes conductive, and its collector remains at L level. NAND gate NA ₁ has both inputs high.
A level signal is applied, and an L level signal is applied to the NAND gate _NA11 . Therefore, the output of the NAND gate _NA11 becomes H level, making the transistor _T3 conductive and lighting the light emitting diode (OK lamp) _L1 .

If the wiring is incorrect, for example, the connection 22 between A ₁ and B ₂ is made, both inputs of the NAND gates NA ₁ to NA _o will not be at H level, so they will output an H level signal and the NAND gate NA ₁₁ give to Therefore, the output of the NAND gate _NA11 becomes L level and the light emitting diode _L1 does not light up. The H level signal of the emitter of transistor _T11 is connected to connection 22.
_However , since the base of this transistor is at L level and non-conductive, the H level signal is directly applied to the NOR gate.
Given to NR ₂ . For NOR gate NR ₂ is L
Outputs level signal. The NAND gate _NA12 receives this L level signal and the H level signal from the NOR gate _NR1 and outputs an H level signal to turn on the transistor _T4 and light the light emitting diode (NG lamp) _L2 .

Furthermore, if a miswiring is made due to connection 23, for example A ₁ - A ₂ , the NAND gate
Since both inputs of NA ₁ to NA _o are never at H level, all of them output H level signals.
Therefore, since the NAND gate _NA11 outputs an L level signal, the light emitting diode _L1 does not light up.
The H level signal at the emitter of transistor _T11 is applied via connection 23 to one input of exclusive OR gate _EX2 . Since the other input of this gate EX ₂ is at L level, the output is at H level and NOR
Given to gate NR ₁ . Therefore, NOR gate _NR1 provides an L level signal. On the other hand, since the collectors of transistors T ₂₁ to _{T 2o} are all at L level, NOR gate NR ₂ outputs an H level signal.
As a result, the NAND gate _NA12 outputs an H level and lights up the light emitting diode (NG lamp) _L2 .

As described above, according to the present invention, by touching one end of the electric wire 2, the wiring destination of the electric wire is instructed to emit light, so that the incidence of incorrect wiring is extremely reduced, and at the same time, the occurrence of incorrect wiring can be prevented by any chance. Even if the wiring is incorrect, you will be immediately notified that the wiring is incorrect, so you can redo the wiring on the spot. Therefore, the conventional problem of having to redo the wiring after all the wiring is completed is immediately eliminated.

Although the present invention has been described in detail with reference to a preferred embodiment thereof, the present invention is not limited to this particular embodiment, and can be modified in many ways without departing from the spirit of the invention.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a wiring location indicating and determining device according to the present invention, and FIG. 2 is an electric circuit diagram showing an example of internal details of each block in FIG. 1. 2... Electric wire, 4, 6... Connector, 8... Designated circuit, 10... Judgment circuit, 12... Notification circuit, 1
4...Instruction circuit, 20...Touch sensor.

Claims (1)

[Claims] 1 It has inputs that are respectively connected to one terminal of the plurality of electric wires to be wired, and when a signal is given to any one of these inputs, an output signal is sent to the corresponding one output terminal. a wiring point designation circuit to give a wiring point, an instruction circuit which instructs a wiring point to which the other terminal of the electric wire is to be connected, using an output signal of the specified circuit, and one of the electric wires specified in response to the output signal of the specified circuit. a determination circuit that applies a signal to the terminal and receives this signal from the other terminal to determine whether the wiring is correct or incorrect; and a circuit that notifies the determination result of the determination circuit;
The wiring location designation circuit sends a signal to the input as an induced voltage generated when a finger touches the other terminal of the electric wire when the other terminal is connected.
1. A wiring location indicating and determining device comprising a touch sensor, wherein the electric wire itself connected to the input is a part of the sensor.