JPH10239380A - Connector coupling detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect a coupling condition even if the connecters are not completely coupled by attaching connector pins of arbitrary pin numbers to female a male connectors and connecting a separately provided square wave transmission code to the connectors to detect the coupling condition with a connector coupling detecting circuit. SOLUTION: Male connectors 1, 6 and female connectors 3, 8 are provided respectively with male connector pins 2, 7 of different pin numbers and female connector pins 4, 9 while these connector pins are connected to a square wave transmission cord 5A provided separately. A connector coupling detecting circuit 17 provided in the board 10 side judges the connectors to be coupled when a 5V signal is generated for S seconds in which the second square wave a inputted through a selector switch 14 is transmitted and the connectors to be uncoupled when OV signal is generated. Also, the pulse of the square wave a inputted to the selector switch 14 is inputted through the cord 5A to a connector coupling sensing and detecting circuit 18 provided on a board 12. The circuit 18 judges the coupling or non-coupling of the connectors 3, 8 according to the voltage signal of the square wave a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various devices using a connector, even if the connector is not completely connected or is in a wire-engaged state, that is, the connected state, that is, the pin of the male connector and the female connector. The present invention relates to a connector connection detecting device capable of detecting whether or not a pin is conductive.

[0002]

2. Description of the Related Art FIGS. 7 to 10 show a conventional connector and a connector connection detecting device for detecting the connection state of the connectors. In the figure, reference numerals 31 and 36 denote male connectors, which have male connector pins 32 and 37, respectively. The female connectors 33 and 38 have female connector pins 34 and 39, respectively, and the female connector 33 and the female connector 38 are connected by a required number of connection cords 35.

[0003] The male connectors 31 and 36 are respectively connected to a board 40,
42, and their male connector pins 3
2, 37 are the patterns 41, 43 on the respective substrates 40, 42
Are connected to each other. A power supply 44 of 5 volts is connected to the pattern 41 on the substrate 40 via a resistor R, and a connector coupling detection circuit 45 is connected. A power supply 46 of 0 volts is connected to the pattern 43 on the substrate 42. Is connected.

FIG. 9 is a flow chart showing a connector connection detecting operation. First, when the power supplies 44 and 46 are turned on, voltages of 5 volts and 0 volts are applied from the power supplies 44 and 46 to the substrates 40 and 42, respectively. In the patterns 41 and 43. Here, if the connectors are in a connected state, that is, a state where the male connector pins 32 and 37 and the female connector pins 34 and 39 of the male connectors 31 and 36 and the female connectors 33 and 38 are conductive, the pattern 41 on the board 40 is 0 V is applied to the connector and if the connector is in an unconnected state,
A voltage of 5 volts is applied to the pattern 41 on 0.

The connector connection detecting circuit 45 detects this and determines whether the voltage applied to the pattern 41 on the substrate 40 is 0 volt or 5 volt. If the voltage is 0 volt, the process is terminated. Detect and end. However, according to the conventional connector connection detecting device as described above, there are the following problems.

As shown in FIGS. 10A and 10B, when the male connectors 31 and 36 are located in places where it is difficult to couple the female connectors 33 and 38, or as shown in FIGS. 38 may be partially connected, not completely connected, not connected at all, or the substrate may be broken due to the biting of a mechanical factor. In these cases, the entire device operates normally. In addition, there is a problem that it takes time to search for a connector in an uncoupled state.

[0007] In particular, the case where only a part is coupled and is in an uncoupled state will be further described.
As shown in (A), when only one of the connector pins is uncoupled, the connector disconnection can be detected if the 0 volt voltage for detecting the connector disconnection signal used in the conventional device is one pin. However, if it is other than pin 1, it cannot be detected. Therefore, in the state shown in FIG. 10A, there is a problem that detection may not be performed.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a connector connection detecting device capable of detecting the connection state even when the connector pins are partially connected and not completely connected. It is in. Another object of the present invention is to provide a connector connection detecting device capable of detecting even if a connection cord has a wire biting due to a mechanical factor or the like. Another object of the present invention is to provide a connector connection detection device that can visually recognize a connection state of a connector and can quickly deal with an unconnected state. A further object of the present invention is to provide a connector connection detecting device capable of detecting a state in which a connector is not connected due to vibration or the like.

[0009]

In order to solve the above-mentioned problems, a connector connection detecting device according to the present invention is connected by connecting a pair of female connectors provided at both ends of a connection cord to male connectors. In the connector connection detecting device for detecting the connection state of the connector on the board, the connection cord, the female connector and the male connector are provided with another square wave transmission code and a connector pin having an arbitrary pin number, and one of the boards to be connected is provided. When a square wave is applied to the side and a 5-volt square wave is input, the pattern on the board is connected to the connector coupling detection circuit. When a 0-volt square wave is input, the pattern is connected to the signal A. A first selector switch, and a connector connection detection circuit for determining connection or non-connection of the connector based on an input voltage signal. They are connected to each other to the plate side, 0 to the input
A second selector switch that outputs 0 volts when volts are input and 5 volts when 5 volts is input, and a signal A that outputs to the pattern on the board when the input is 0 volts.
A third selector switch whose output is the output of the second selector switch when the input is 5 volts, and an output is switched when the rising signal of the square wave is input, and the square switch is switched to the third selector switch by the subsequent square wave. And a connector coupling detection and detection circuit that outputs a signal of a wave voltage and outputs a 5 volt signal to the second selector switch. As described above, another square wave transmission code and an optional square wave transmission code are provided. By providing the pin number connector pin, the first to third selector switches, and the connector connection detection and detection circuit, it is possible to use both 5 volts and the individual signal, and it is detected whether or not all the pins of the connector are connected. Will be able to do it.

Further, the connector connection detecting device according to the present invention is connected to the connector connection detecting circuit in the above connector connection detecting device, and emits light when a connector disconnection signal is detected by the connector connection detecting circuit. A light emitting diode is provided. When a connector disconnection signal is detected, the light emitting diode emits light, so that it is possible to visually confirm the connector connection state and the connected connector code.

Further, the connector connection detecting device according to the present invention detects the connection state of the connectors on the board to be connected by connecting a pair of female connectors provided at both ends of the connection cord to the male connectors. In the detection device, a 5 volt power supply is connected to the pattern on one of the substrates via a connector connection detection circuit and a resistor,
A power supply of 0 volt is connected to the pattern on the other substrate, and each of the connectors is provided with a conductive terminal. The connector disconnection signal is generated by a voltage signal input to the connector coupling detection circuit. Can be detected, and all the connectors are connected by the terminals, but it is possible to prevent the connectors from being uncoupled due to vibration or the like.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIGS. FIG. 1 is a circuit configuration diagram of a connector connection detecting device according to a first embodiment of the present invention, FIG. 2 is a flowchart showing a connector connection detecting operation by the device, and FIG. 3 is a waveform showing input / output states of the selector switch. FIG. 4 is a circuit configuration diagram of a connector connection detecting device according to a second embodiment of the present invention, and FIG.
FIG. 6 is a circuit configuration diagram of a connector connection detection device according to the third embodiment. FIG. 6 is a configuration diagram of a connector used in the connector connection detection device according to the third embodiment of the present invention.

In FIG. 1, reference numerals 1 and 6 denote male connectors, which have male connector pins 2 and 7, respectively. Also,
Reference numerals 3 and 8 denote female connectors, and female connector pins 4 and 9 respectively.
The female connector 3 and the female connector 8 are connected by a required number of connection cords 5. The male connectors 1, 6 are soldered to the boards 10, 12, respectively.
The male connector pins 2 and 7 are electrically connected to the patterns 11 and 13 on the boards 10 and 12, respectively.

On the other hand, the male connectors 1 and 6 have different pin numbers from the male connector pins 2 and 7, respectively.
7A, and correspondingly, the female connectors 3, 8 are provided with female connector pins 4A, 9A having pin numbers different from those of the female connector pins 4, 9, respectively. 5A. 14, 15, 1
Reference numeral 6 denotes first to third selector switches. The first selector switch 14 provided on the substrate 10 is connected to the male connector pins 2 and 2A and the connector connection detection circuit 17,
Also, two square waves a can be applied for S seconds. When a square wave a of 5 volts is input as a basic operation, the pattern 11 of the substrate 10 and the connector connection detection circuit 17 are connected. , 0 volts, the signal A is connected to the pattern 11 of the substrate 10.

A third selector switch 15 provided on the substrate 12 is connected to the male connector pin 7 and the connector connection detection and detection circuit 18. When the input b has a 0 volt signal waveform, the output becomes a signal A. When the input b has the waveform of the 5 volt signal, the output e operates so as to be the output d of the second selector switch 16, and the second selector switch 16 is connected to the third selector switch 15 and the connector connection detection and detection circuit 18. When a 0 volt signal waveform is input to the input c, the output becomes a 0 volt signal, and when a 5 volt signal waveform is input to the input c, the 5 volt signal waveform becomes an output d. is there.

The connector connection detecting circuit 17 provided on the substrate 10 detects whether the connector is connected or not connected by the input voltage signal, that is, when a 5 volt signal is generated in the second S seconds of the input square wave, the connector connection is detected. , 0 volt signal, it is determined that the connector is not connected.
The connector coupling detection and detection circuit 18 provided on the substrate 12 is connected to the male connector pin 7A, the second selector switch 16 and the third selector switch 15, and the square wave a input to the first selector switch 14 Are input through the square wave transmission code 5A.

The output 1 of the connector coupling detection and detection circuit 18 to the third selector switch 15 is set to 0 when the first rising square wave a signal is input.
When the volt signal is switched to the 5 volt signal and the second square wave a signal is input, the operation is performed so that the square wave a is output. When the first rising square wave a signal is input, the output switches from the 0 volt signal to the 5 volt signal, and even if the second square wave a signal is input thereafter,
The output operates to remain a 5 volt signal.

A 5 volt power supply is connected to the second selector switch 16 via a resistor R1, and a 0 volt power supply is connected to the second selector switch 16 via a resistor R2. A 0 volt power supply is connected via R3, and a 0 volt power supply is connected between the male connector pin 7A and the connector connection detection and detection circuit 18 via a resistor R6.
Volt power is connected. Also, male connector pin 2
And a first selector switch 14, a resistor R4 is provided. A 5-volt power supply is connected between the resistor R4 and the first selector switch 14 via a resistor R5.

Thus, in the above embodiment, FIG.
As shown in the flowcharts and waveforms of FIGS. 3 and 3, when the 5 volt and 0 volt power sources are turned on and two square waves a are applied to the first selector switch 14 for S seconds, the first
The selector switch 14 connects the pattern 11 to the connector coupling detection circuit 17 when a 5 volt voltage is input as the square wave a, and connects the pattern 11 to the signal A when 0 volt is input as the square wave a. .

Next, whether the female connector 3 and the female connector 8 are connected or not is determined as follows. (1) When female connector 3 and female connector 8 are connected together Male connector pin 2 and female connector pin 4, male connector pin 2A and female connector pin 4A, male connector pin 7 and female connector pin 9, male connector pin 7A and female connector pin 9A
Have a continuity, and the square wave a input to the first selector switch 14 is combined with the square wave transmission code 5
A is input to the connector connection detection and detection circuit 18 through A.

Here, connector connection detection and detection circuit 1
8 operates as follows. Relationship between input and output 1 When a rising signal due to the first square wave a is input to the input, the output 1 switches from a 5 volt signal to a 0 volt signal, and further a signal due to the second square wave a is input. Then, the square wave a is output from the output 1. [Fig.
(See waveform a and waveform b in (A).)

Relationship between Input and Output 2 When a rising signal due to the first square wave a is input to the input, the output 2 switches from a 0 volt signal to a 5 volt signal, and then the second square wave a. Output 2 remains a 5 volt signal even if a signal is input. [Fig.
(See waveform a and waveform c in (A).) By connecting the female connector 3 and the female connector 8, a square wave a signal is input as described above, and outputs 1 and 2 are output.
Changes.

When a 0 volt signal is input to the input of the second selector switch 16, the output becomes a 0 volt signal.
If a 5 volt signal enters the input, the output will be a 5 volt signal. [See waveforms c and d in FIG. 3A] On the other hand, when the input is a 0 volt signal, the output of the third selector switch 15 is a signal A. When the input is a 5 volt signal, the output e is the second signal. This is the output d of the selector switch 16. [See Waveforms d and e in FIG. 3 (A)] The output e waveform appears in the input f waveform of the first selector switch 14 through the combined square wave transmission code 5A.

(2) When the female connector 3 and the female connector 8 are not connected together, or when one of the female connector 3 and the female connector 8 is not partially connected. Uncoupled [FIG. 10 (B)] In the second S seconds of the square wave a input to the first selector switch 14, the waveform of the input f of the first selector switch 14 becomes 0 volt due to the disconnection of the connector. Signal, and the input signal of the connector coupling detecting circuit 17 is also 0.
It becomes a volt signal.

When one of the female connector 3 and the female connector 8 is partially uncoupled [FIG. 10 (A)] (a) The square wave transmission code 5A is connected and the other connection code 5 is not connected In the case described above, the same waveform as that at the time of connector connection appears up to the output e of the third selector switch 15 as described in the case where the connectors are connected. Here, since the connection code 5 for transmitting this signal is not connected, the waveform of the input f of the first selector switch 14 remains at the 0 volt signal.

(B) The square wave transmission code 5A is not connected,
When the other connection cord 5 is connected The square wave a input to the first selector switch 14 is not connected to the square wave transmission code 5A, so the input of the connector connection detection and detection circuit 18 is a 0 volt signal. Will remain. Therefore, the operation of the connector connection detection and detection circuit 18 is such that when the input remains at the 0 volt signal, the output 1 remains at the 5 volt signal. [See waveforms a and b in FIG. 3B] On the other hand, when the input remains at the 0 volt signal, the output 2 also becomes 0
The volt signal remains. [See waveform a and waveform c in FIG. 3 (B)]

In the second selector switch 16, when the input c remains at 0 volt signal, the output d becomes 0 volt signal. In the third selector switch 15, when the input b remains at 5 volt signal, the output becomes As for e, the output d of the second selector switch 16 is output as it is. Here, since the connection cord 5 for transmitting this signal is connected, the waveform of the input f of the first selector switch 14 shows an output e, that is, a 0 volt signal. [See waveforms e and f in FIG. 3 (B)]

Then, based on the voltage signal input to the first selector switch 14, it is determined whether the connectors are connected or not. As a criterion, when the voltage signal input to the connector connection detection circuit 17 is a 5-volt signal during the second S seconds of the input square wave a, it is determined that the connector is connected, and the voltage signal is 0. In the case of a volt signal, it is determined that no connection is made.

After the second square wave a has entered, the signal A input from the left is connected to the signal A on the right by the connection code 5 coupled to the first selector switch 14 and the third selector switch 15. . As for the output e of the third selector switch 15, a waveform d appears when a 5-volt signal is applied to the input, and a signal A appears when a 0-volt signal is applied. The same applies to the first selector switch 14. Since the number of pins of the connector differs depending on the application, in this embodiment, one square wave transmission code 5A (this pin number is arbitrary) is used, and the other (remaining) pins are used for 5 volts and the signal A. Code 5 is used.

As described above, according to the first embodiment,
The connector connection as shown in FIG. 10A is connected by the square wave a used at an arbitrary pin number, the 5 volts used at all other pin numbers, the shared code of the individual signal, and the connector connection detection circuit 17. The effect that the connector disconnection signal can be detected even in the state can be obtained.

Further, even when the connection cord 5 is bitten by a mechanism or the like and the cut end of the connection cord 5 comes into contact with a housing or the like, the connector disconnection signal can be detected even when the voltage drops to 0 volt. it can. In other words, it is possible to detect even one line bit code, and it is expected that the line bit code can be detected.

Next, a second embodiment shown in FIG. 4 will be described. This embodiment differs from the first embodiment in that a light emitting circuit 19 and a light emitting diode 20 are additionally connected so that a connector disconnection signal can be visually recognized. The number of the light emitting diodes 20 required is equal to the number of the connectors to be used.
, And write the location etc. around it, so that you can determine which connector code
For example, if the code of the connector is K1, the location is also written as K1.

Accordingly, when the connector disconnection signal is detected, the light emitting diode 20 emits light by the light emitting circuit 19, and when the connector disconnection signal is not detected, the light emitting diode 20 does not emit light. In addition, it becomes possible to visually recognize which connection connector code, and it is possible to quickly deal with the target code.

FIGS. 5 and 6 show a third embodiment. In this embodiment, conductive male terminals 1, 22, 23, and 24 are provided on male connectors 1, 6 and female connectors 3, 8 used in a conventional device, respectively.
As shown in FIG. 5, the terminals 21, 22, 23 and 24 are connected through the connection cord 5 to the terminals 21 and 22.
Is connected to a 0 volt power supply without being connected to the female connector pin 7, and the terminal 23 is connected to a 5 volt power supply via a resistor R without being connected to the female connector pin 2.

As described above, the terminal 2 which is electrically connected to the connector
When 1, 22, 23, and 24 are provided, one additional pin is added to the female connector for a terminal detection signal pin for determining conduction. Here, when the female connectors 3 and 8 are not connected as shown in FIG. 10B, or are not completely connected without being partially connected as shown in FIG. 10A or FIG. That is, as shown in FIG. 5, when the terminals 21 and 23 or the terminals 22 and 24 are not connected or both are not connected, the connector connection detecting circuit 17
Does not change with the voltage of 5 volts, the connector disconnection signal is detected.

On the other hand, conversely, when both are connected (both terminals are connected), the voltage applied to the connector connection detection circuit 17 changes from 5 volts to 0 volts, No connector disconnection signal is detected. According to the third embodiment, the conductive terminal 2
By providing 1, 22, 23, 24 on the connector,
The connector disconnection signal is detected. As shown in FIG. 6, the male connector pins 2 and 7 and the female connector pins 4 and 9 are detected.
Are all connected, but an effect of preventing the connector from being uncoupled due to vibration or the like can be expected. Further, by adding the light emitting diode of the second embodiment, it is possible to know at a glance which connector connector code is used, and to take prompt action.

[0037]

As described above, according to the connector connection detecting device of the present invention, it is possible to detect whether or not all the pins of the connector are connected, so that some of the connector pins are used. It is possible to detect the connection state even if the connection cord is not completely connected without being connected, and it is possible to detect even if the connection cord is bitten due to mechanical factors etc. Become. In addition, since the light emitting diode is provided so that the connected state of the connector can be visually recognized, it is possible to quickly cope with the unconnected state. Furthermore, according to the connector connection detecting device of the present invention, since each connector is provided with a conductive terminal, a state where the connector pins are not connected due to vibration or the like even though all the connector pins are connected. Can also be detected.

[Brief description of the drawings]

FIG. 1 is a circuit configuration diagram of a connector connection detection device according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating a connector connection detection operation performed by the connector connection detection device according to the first embodiment of the present invention.

FIG. 3 is a waveform diagram showing an input / output state of a selector switch in the connector connection detecting device according to the first embodiment of the present invention.

FIG. 4 is a circuit configuration diagram of a connector connection detection device according to a second embodiment of the present invention.

FIG. 5 is a circuit configuration diagram of a connector connection detection device according to a third embodiment of the present invention.

FIG. 6 is a configuration diagram of a connector used in a connector connection detection device according to a third embodiment of the present invention.

FIG. 7 is a circuit configuration diagram of a conventional connector connection detection device.

FIG. 8 is a configuration diagram of a connector used in a conventional connector connection detection device.

FIG. 9 is a flowchart showing a connector connection detecting operation of the conventional connector connection detecting device.

FIG. 10 is a diagram showing a connector connection state in a conventional connector connection detection device.

[Explanation of symbols]

1, 6 Male connector 2, 4, 7, 9, 2A, 4A, 7A, 9A Connector pin 3, 8 Female connector 5 Connection code 5A Square wave transmission code 10, 12 Board 11, 13 Pattern 14 First selector switch 15 No. 3 selector switch 16 second selector switch 17 connector connection detection circuit 18 connector connection detection and detection circuit 20 light emitting diode 21, 22, 23, 24 terminal a square wave 0V 0V power supply 5V 5V power supply

Claims (3)

[Claims] 1. A connector connection detecting device for detecting a connection state of a connector on a board to be connected by connecting a pair of female connectors provided at both ends of a connection cord to a male connector, respectively. The male connector is provided with another square wave transmission code and a connector pin having an arbitrary pin number, and a square wave is applied to one of the substrates to be connected.
When a square wave of volts is input, the pattern on the board is connected to the connector coupling detection circuit. When a square wave of 0 volts is input, a first selector switch for connecting the pattern and the signal A is input. The above-mentioned connector connection detecting circuits for judging connection and non-connection of the connectors based on voltage signals provided are connected to each other on the other substrate side. When 0 volt is inputted to the input, the output is 0 volt. And a third selector switch whose output is a signal A when the input is 0 volts, and whose output is the output of the second selector switch when the input is 5 volts; When the rising signal of the square wave is input, the output is switched, and the signal of the square wave voltage is output to the third selector switch by the subsequent square wave, and the signal of the second selector is output. Connector coupling detection apparatus characterized in that a connector coupling detector and detection circuit outputs a 5 volt signal to the data switch. 2. Connected to the connector connection detection circuit,
2. The connector connection detecting device according to claim 1, further comprising a light emitting diode that emits light when a connector disconnection signal is detected by the connector connection detection circuit. 3. A connector connection detecting device for detecting a connection state of a connector on a board to be connected by connecting a pair of female connectors provided at both ends of a connection cord to a male connector, respectively. Connected to a power supply of 5 volts via a connector connection detection circuit and a resistor, a power supply of 0 volts is connected to a pattern on the other substrate, and conductive terminals are provided in the connectors. Connector detection device.