JP4133991B2 - Connector connection error detection device - Google Patents

Description

  The present invention relates to a connector connection abnormality detection apparatus for preventing connector connection abnormality.

  As a technique for preventing an abnormal connection of a connector including a male terminal and a female terminal, for example, an incomplete coupling detection mechanism as disclosed in Patent Document 1 or a power-on method as disclosed in Patent Document 2 Is known.

In the incomplete coupling detection mechanism of Patent Document 1, a weak current is steadily passed between a male terminal and a female terminal, and the presence or absence of conduction between the male terminal and the female terminal is confirmed by a sensor. It is designed to detect connection errors.
When such a configuration is applied, even if the male terminal and the female terminal are slightly in the state where mechanical connection between the male terminal and the female terminal is insufficient and both of them are about to be detached, If an electrical connection is ensured by contact, the connection state is determined to be normal. Therefore, it is difficult to prevent a failure such as poor conduction due to vibration or the like acting on the device after shipment.

In addition, the power-on method disclosed in Patent Document 2 is provided with a short-circuit connection terminal in an electrical component mounted via a connector, and is unique to each component in a device-side terminal to which these terminals are connected. A resistor with a resistance value of 1 is connected in a loop, and when the power is turned on, a current is passed through this loop to detect whether or not the component is installed properly. Based on this, the component causing the electrical connection abnormality is specified.
However, if the connection terminal for short circuit and the terminal on the device side are in contact with each other and electrical connection is ensured, the resistance corresponding to each component is short-circuited. As in the case of the mechanism, there remains a problem that it is difficult to prevent a failure such as poor conduction due to vibration or the like acting on the device after shipment.

Japanese Utility Model Publication 3-82574 (FIG. 1) Japanese Patent Laid-Open No. 57-150015 (FIG. 1)

  Therefore, an object of the present invention is to improve the inconvenience of the prior art and to detect an abnormal connection between a male terminal and a female terminal including an abnormal mechanical fitting state such as a half-insertion of a connector. An object of the present invention is to provide a connector connection abnormality detection device that can be used.

In order to achieve the above object, the connector connection abnormality detection device of the present invention has a minimum electrical resistance between the male terminal and the female terminal when the fitting between the male terminal and the female terminal is in a complete state. On the other hand, when the fitting between the male terminal and the female terminal is maintained in an incomplete state, the electrical resistance between the male terminal and the female terminal is larger than the minimum electrical resistance. , at least, the material of the sliding contact surface with the male terminal in sliding contact surface or said female terminals of the female terminal in the male terminals, the relative insertion direction between the male terminal and the female terminal along with the differentiating,
An auxiliary terminal that maintains a steady contact with the female terminal through the process of inserting and removing the male terminal and the female terminal is provided on the male terminal side, and a pull-down resistor is connected to the base end of the auxiliary terminal. Based on the value of the output voltage output from the pull-down resistor when a DC voltage is applied to the male terminal, at least whether or not the fitting between the male terminal and the female terminal is in a complete state. It has a configuration characterized in that a monitoring circuit for detecting whether the state is complete is provided .

  Specifically, a contact that slides on the male terminal is formed at the tip of the female terminal, while a sliding contact surface that slides on the contact is formed on the male terminal. When the mating of the male terminal and the female terminal is in a complete state by differentiating the material of the sliding contact surface of the male terminal so that the resistance is greater than the electrical resistance of the sliding contact surface on the base side. The electric resistance when in an incomplete state can be changed.

  When such a configuration is applied, the sliding contact surface on the base side of the male terminal and the contact at the tip of the female terminal are connected with the male terminal completely inserted into the female terminal, and the male terminal and the female terminal are connected. In addition, the sliding contact surface on the tip side of the male terminal and the contact on the tip of the female terminal are connected in a state where the male terminal and the female terminal are half inserted. The electrical resistance between the terminals increases.

  On the other hand, a contact that slides on the female terminal is formed at the tip of the male terminal, while a sliding contact surface that slides on the contact is formed on the female terminal, and the sliding contact on the tip side of the female terminal is formed. You may differentiate the material of the sliding contact surface in a female terminal so that the electrical resistance of a surface may become larger than the electrical resistance of the sliding contact surface of a base side.

  In this case, with the male terminal fully inserted into the female terminal, the sliding contact surface on the base side of the female terminal and the contact at the tip of the male terminal are connected, and the electrical resistance between the male terminal and the female terminal is reduced. In addition, the sliding contact surface on the tip side of the female terminal and the contact on the tip of the male terminal are connected with the male terminal and the female terminal in a half-inserted state. Electrical resistance increases.

When the male terminal and female terminal are completely fitted, the electrical resistance between the male terminal and the auxiliary terminal is minimized, and the male terminal and female terminal are not completely fitted. If so, the electrical resistance between the male terminal and the auxiliary terminal will be larger than that, so output from the pull-down resistor connected to the base end of the auxiliary terminal that maintains a steady contact with the female terminal The output voltage value is measured by a monitoring circuit, and based on this output voltage value , at least whether the male terminal and the female terminal are completely fitted or incomplete is detected. be able to.
Since the male terminal and the auxiliary terminal are provided on the same side, it is possible to detect the presence or absence of a connection abnormality without exchanging a special signal with the counterpart device connected via the connector.

  Furthermore, when the male terminal and the female terminal are not mated, the electrical resistance between the male terminal and the auxiliary terminal is infinite, so it is possible to detect the unmated state in addition to the half-inserted state. it can.

The connector connection abnormality detection device of the present invention discriminates the material of the sliding contact surface with the female terminal in the male terminal or the sliding contact surface with the male terminal in the female terminal in the relative insertion / extraction direction between the male terminal and the female terminal. When the male terminal and female terminal are completely fitted, the electrical resistance between the male terminal and female terminal is minimized, while the male terminal and female terminal are incompletely fitted. Since the electrical resistance between the male terminal and the female terminal becomes large when maintained at, when a DC voltage is applied to the male terminal, a steady contact state with the female terminal should be maintained. Based on the value of the output voltage output from the pull-down resistor connected to the base end of the auxiliary terminal provided on the male terminal side, including abnormalities in the mechanical fitting state such as half insertion of the connector, An abnormal connection between the male terminal and the female terminal can be detected and prevented.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram schematically showing a connector structure according to an embodiment to which the present invention is applied.

  As shown in FIG. 1, the connector 1 of this embodiment includes a plurality of male terminals 2 arranged in parallel at a predetermined pitch, and the same number of female terminals 3 provided corresponding to each male terminal 2. The male terminal 2 is mounted on a board 4 such as a mother board, and the female terminal 3 is a socket 5 provided at various electrical components and peripheral devices that are detachably mounted on the above-described board 4 or at the tip of its wiring. It is fixed inside. The male terminal 2 may be provided on a plug provided at the tip of the wiring of the substrate 4.

  FIG. 2 is a partially enlarged view of FIG. 1, showing a pair of male terminals 2 and female terminals 3 taken out and in a completely fitted state. A contact 6 slidably contacting the male terminal 2 is integrally formed at the tip of the female terminal 3, while a slidable contact surface 7 slidably contacting the contact 6 of the female terminal 3 is formed on the male terminal 2. The material of the sliding contact surface 7 of the male terminal 2 is, for example, a surface treatment such as plating so that the electrical resistance of the sliding contact surface 7a on the distal end side of the terminal 2 is greater than the electrical resistance of the sliding contact surface 7b on the base side. Differentiated by. The insertion / extraction direction of the female terminal 3 with respect to the male terminal 2 is the vertical direction in FIG. 2, and the material of the sliding contact surface 7 is differentiated into two regions having different electric resistances in this direction.

In this embodiment, the sliding contact surface 7b on the base side of the male terminal 2 and the contact 6 at the tip of the female terminal 3 are connected in a state where the male terminal 2 is completely inserted into the female terminal 3 as shown in FIG. . In this state, the electrical resistance Rc between the male terminal 2 and the female terminal 3 is substantially the minimum value of 0 [Ω]. Further, in the state where the male terminal 2 and the female terminal 3 are half-inserted as shown in FIG. 3, the sliding contact surface 7a on the distal end side of the male terminal 2 and the contact 6 on the distal end of the female terminal 3 are connected, As a result, the electrical resistance Rc between the male terminal 2 and the female terminal 3 increases to R [Ω] (a value in a predetermined range excluding ∞).
Moreover, in the unfitted state where the male terminal 2 is completely removed from the female terminal 3, the electrical connection between the male terminal 2 and the female terminal 3 is canceled, so the male terminal 2 and the female terminal The electrical resistance Rc to 3 is ∞ [Ω] (where 0 <R <∞).

In the case of preventing half-insertion between the male terminal 2 and the female terminal 3 using only the configuration described above, the fitting between the male terminal 2 and the female terminal 3 is particularly as shown in FIG. In an incomplete state, the electrical resistance Rc between the male terminal 2 and the female terminal 3 is an electrical component or device that transmits electric power or an electrical signal through the male terminal 2 and the female terminal 3, that is, The material of the sliding contact surface 7a on the distal end side of the male terminal 2 is differentiated so as to be large enough to stop the operation of the electrical component or device connected to the substrate 4 via the connector 1. .
Specifically, the surface treatment of the slidable contact surface 7a is adjusted so that the electric resistance R [Ω] of the slidable contact surface 7a is large enough to stop the operation of the device connected to the socket 5 side. .
In this case, it is not possible to determine whether the male terminal 2 and the female terminal 3 are completely fitted, incomplete or unfitted using the monitoring circuit. Since it is not necessary to distinguish between an incompletely fitted state and an unfitted state, the electrical resistance R [Ω] may be ∞ [Ω].
Therefore, it is not always necessary to apply a surface treatment for adjusting the resistance to the sliding contact surface 7a. Instead, it is possible to apply a method such as coating or coating of an insulator, and the manufacturing cost of the connector 1 can be reduced. It is effective for reduction.

When such a configuration is applied, when the fitting between the male terminal 2 and the female terminal 3 is in an incomplete state as shown in FIG. 3, the sliding contact surface 7a on the distal end side of the male terminal 2 and the female terminal 3 is connected to the contact 6 at the tip, and the electrical resistance Rc between the male terminal 2 and the female terminal 3 is R [Ω].
Accordingly, as in the case where the male terminal 2 and the female terminal 3 are not fitted, the electrical components and the device connected to the socket 5 are in an inoperative state, so that the operation of the device at the time of factory shipment is confirmed. In this stage, it is possible to detect a half-insertion or non-fitting abnormality of the so-connector 1 by the non-operation of the electrical component or device, and the male terminal 2 and the female terminal 3 are completely connected as shown in FIG. Since the device can be shipped after the fitting state is corrected, it is possible to prevent troubles such as poor conduction due to vibration or the like acting on the device after shipment.

  A specific example of the connector 1 having the connector structure of FIG. 2 composed of the male terminal 2 and the female terminal 3 is shown in a completely fitted state in FIG. 4, and incompletely fitted (half-inserted) in FIG. Indicates the state.

  As shown in FIGS. 4 and 5, by applying the structure as shown in FIG. 2 to all pairs of male terminals 2 and female terminals 3, half of all pairs of male terminals 2 and female terminals 3 are used. The presence or absence of the insertion or unfitted state can be detected individually.

However, if the processing accuracy of the male terminal 2 and the female terminal 3 and the molding processing of the socket 5 are appropriate, there is a low possibility that a conduction failure other than half insertion or non-fitting will occur. There is no need to individually detect the presence or absence of poor contact for all pairs of terminals 2 and female terminals 3.
Specifically, the sliding contact surface 7a for the set of the male terminal 2 and the female terminal 3 located at the left and right ends, that is, the male terminal (2L) and the female terminal (3L) and the male terminal (2R) and the female terminal (3R). It is sufficient to apply the structure of FIG. 2 in which the resistance of the sliding contact surface 7b is differentiated, and the other male terminal 2 may be a resistance of 0 [Ω] specification throughout the sliding contact surface 7. When the male terminal (2L) and female terminal (3L) and the male terminal (2R) and female terminal (3R) are completely fitted, another male terminal 2 and female terminal 3 are not completely fitted or This is because it is unlikely that a fitting state will occur.
For the same reason, the structure as shown in FIG. 2 is applied only to the male terminal (2C) and the female terminal (3C) located at the center of the socket 5, and the other male terminal 2 and female terminal 3 are usually combined. It is also possible to have a structure of

  Next, a monitoring circuit is provided to determine whether the male terminal 2 and the female terminal 3 are completely fitted, incomplete, or completely unfitted. The connector connection abnormality detection device thus configured will be described.

  FIG. 6 is a functional block diagram showing a connector connection abnormality detecting device 8 using a connector structure composed of a male terminal 2 and a female terminal 3. Here, as an example, the power supply unit 9 and the control board 10 are connected via the connector 1 (male terminal 2 and female terminal 3), and the power supply circuit 11 of the power supply unit 9 to the control circuit 12 of the control board 10 are connected. The structure of supplying DC power to is shown.

In addition to the function of a control circuit 12 for realizing the original function of the device, for example, a mother board of a personal computer, the control board 10 is further in a fully fitted state, incompletely fitted state (half-inserted state). State), a monitoring circuit 13 for detecting the unfitted state is provided.

  In this embodiment, since the monitoring circuit 13 needs to accurately identify the incompletely fitted state and the unfitted state of the connector 1, the sliding contact surface 7a of the male terminal 2 and the contact 6 of the female terminal 3 are connected. The electrical resistance of the sliding contact surface 7a is adjusted so that the electrical resistance Rc between the male terminal 2 and the female terminal 3 becomes R [Ω] (a value in a predetermined range excluding ∞). The electric resistance Rc in an unfitted state, that is, ∞ [Ω] can be distinguished.

  The connector connection abnormality detection device 8 according to the present embodiment includes the connector 1 (male terminal 2 and female terminal 3) and the monitoring circuit 13 having such a configuration.

  A specific configuration example of the monitoring circuit 13 is shown in FIG. For example, as shown in FIG. 7A, the monitoring circuit 13 is connected to a pull-down resistor 14 (resistance value Ra [ Ω]) is easily connected. Specifically, the pull-down resistor 14 is connected to the base end portion of the male terminal 2 fixed on the control board 10 side.

As illustrated in FIG. 2, when the male terminal 2 is completely inserted into the female terminal 3, the sliding contact surface 7 b on the base side of the male terminal 2 and the contact 6 at the tip of the female terminal 3 are connected to each other. And the female terminal 3 have an electric resistance Rc of substantially 0 [Ω]. In this case, since the resistance component of the connector 1 is substantially 0 [Ω] as shown in FIG. 7A, if the output voltage from the power supply unit 9 is Vp [V], it functions as the monitoring circuit 13. The output Vout from the pull-down resistor 14 is Vout = Vp.
Further, as illustrated in FIG. 3, when the male terminal 2 and the female terminal 3 are half-inserted, the sliding contact surface 7 a on the distal end side of the male terminal 2 and the contact 6 on the distal end of the female terminal 3 are connected. The electrical resistance between the male terminal 2 and the female terminal 3 is Rc [Ω]. In this case, since the resistance component of the connector 1 is Rc [Ω] as shown in FIG. 7B, the output voltage Vp [V] from the power supply unit 9 is equal to the pull-down resistor 14 of Ra [Ω]. The output Vout from the pull-down resistor 14 which is divided into the resistance component Rc [Ω] of the connector 1 and functions as the monitoring circuit 13 is Vout = Vp × Ra / (Ra + Rc) (where Rc = R [Ω ], Paragraph number 0038).
Further, in a non-fitted state where the male terminal 2 and the female terminal 3 are not electrically connected at all, the male terminal 2 and the female terminal 3 are in an insulated state, so that the output Vout from the pull-down resistor 14 is Vout. = 0.

  Accordingly, whether the connector 1 is in a completely fitted state depending on whether the output Vout from the pull-down resistor 14 substantially matches Vp, Vp × Ra / (Ra + Rc), or 0 (when Vout = Vp). Easy to determine whether it is in an incompletely engaged state (half-inserted state) (when Vout = Vp × Ra / (Ra + Rc)) or not completely engaged (when Vout = 0) Can be identified and detected.

  That is, this embodiment uses the output Vout from the pull-down resistor 14 as an electrical characteristic reflecting the electrical resistance between the male terminal 2 and the female terminal 3, and measures this output Vout to measure the male terminal. It is determined whether the fitting of 2 and the female terminal 3 is in a complete state, an incomplete state, or a complete unfitted state.

  The simplest means for notifying the operator of these detection results is a lighting display by an LED or the like, which is easily performed by operating the LED or the like using a comparator or the like that compares the magnitude of Vout with a reference value. realizable.

  In the case where the control circuit 12 is constituted by a personal computer motherboard or the like as in the example of FIG. 6, the value of Vout is sent to the microprocessor of the control circuit 12 via an A / D converter or the like. Various processing operations can be performed by the microprocessor based on the value of Vout. For example, it is possible to display a monitor or buzzer that warns of an incomplete mating state (half-insertion state), or to change the circuit operation (system operation stop processing, etc.) when a connector half-insertion state is detected. It is.

  As described above, according to this embodiment, the connector 1 in an incompletely fitted state is used only by performing simple additional processing such as surface treatment on the male terminal 2 which is a component of the connector 1. It is possible to prevent the occurrence of system abnormality due to the above.

  Further, if the monitoring circuit 13 having a simple circuit configuration is provided together with the connector connection abnormality detection device 8, the insertion state of the connector 1 can be accurately monitored. Therefore, the circuit state is determined according to the insertion state of the connector 1 on the system. It is possible to realize insertion error display and protection in case of an abnormality (system stop, etc.).

  Furthermore, if the connection state of the male terminal 2 and the female terminal 3 is monitored at both the left and right ends of the connector 1, it is inserted in a slanted state (a state in which the detection state of the connection between the left and right ends is different) or half-inserted. It is also possible to identify the state of (a state where there is no difference in the detection state of the connection between the left and right ends and both are incompletely fitted).

Next, another embodiment will be described. The connector 15 shown in FIG. 8 has a steady contact state with the female terminal 3 through the insertion / extraction process of the male terminal 2 and the female terminal 3 in addition to the connector 1 of FIG. An auxiliary terminal 16 to be maintained is also provided.
Since the structures of the male terminal 2 and the female terminal 3 are the same as those already described, only the same reference numerals are given, and detailed description thereof is omitted.

FIG. 9 is an enlarged view showing one set of male terminal 2, female terminal 3 and auxiliary terminal 16 taken out and shown in a completely fitted state. FIG. 10 shows one set of male terminal 2, female terminal 3 and auxiliary terminal 16. It is the enlarged view which took out and was shown in the incomplete fitting state (half-insertion state).
Since the auxiliary terminal 16 is fixed on the substrate 4 side in parallel with the male terminal 2 and is in sliding contact with the outer surface of the female terminal 3 by the elastic restoring force of the auxiliary terminal 16 itself, FIG. 9 and FIG. As shown in the figure, even in a state in which the male terminal 2 and the female terminal 3 are completely fitted, and in a state in which the male terminal 2 and the female terminal 3 are incompletely fitted (half-inserted state), Electrical contact between the terminal 16 and the female terminal 3 is ensured. The electrical resistance between the auxiliary terminal 16 and the female terminal 3 is substantially 0 [Ω]. However, since the auxiliary terminal 16 is formed shorter than the male terminal 2 in the insertion / removal direction, the auxiliary terminal 16 and the female terminal 3 are not fitted to each other in a state where the tip of the male terminal 2 is not fitted to the female terminal 3 at all. Are not in electrical contact.

  Therefore, in this embodiment, when the male terminal 2 is completely inserted into the female terminal 3 as shown in FIG. 9, the sliding contact surface 7b on the base side of the male terminal 2 and the contact 6 at the tip of the female terminal 3 And the electrical resistance Rc between the male terminal 2 and the auxiliary terminal 16 is substantially the minimum value of 0 [Ω], and the male terminal 2 and the female terminal 3 are half-inserted as shown in FIG. In this state, the sliding contact surface 7a on the distal end side of the male terminal 2 and the contact 6 on the distal end of the female terminal 3 are connected, and the electrical resistance Rc between the male terminal 2 and the auxiliary terminal 16 is R [Ω]. (Value in a predetermined range excluding ∞). When the male terminal 2 is completely disconnected from the female terminal 3, the electrical contact between the male terminal 2 and the female terminal 3 and between the female terminal 3 and the auxiliary terminal 16 is completely completed. Therefore, the electric resistance Rc between the male terminal 2 and the auxiliary terminal 16 becomes ∞ [Ω] (where 0 <R <∞).

  FIG. 11 is a functional block diagram showing a connector connection abnormality detecting device 17 using a connector structure including the male terminal 2, the female terminal 3 and the auxiliary terminal 16. Similar to the above-described embodiment, as an example, the power supply unit 9 and the control board 10 are connected via the connector 15 (male terminal 2 and female terminal 3), and the control circuit board 10 is controlled from the power supply circuit 11 of the power supply unit 9. A structure in which a DC power supply is supplied to the circuit 12 is shown.

  In addition to the normal power supply circuit 11, the power supply unit 9 is provided with a monitoring circuit 13 for detecting complete fitting, incomplete fitting (half-inserted state), and non-fitting of the connector 15.

  The connector connection abnormality detection device 17 according to this embodiment includes a connector 15 (male terminal 2, female terminal 3, auxiliary terminal 16) and a monitoring circuit 13.

  The specific configuration example of the monitoring circuit 13 can be the same as that of FIG. 7A described above, but in this embodiment, the pull-down resistor 14 (resistance value Ra [Ω]) is the auxiliary terminal 16. It will be connected to the base end of.

  Accordingly, based on the output principle Vout from the pull-down resistor 14, the connector 15 is in a completely fitted state or incompletely fitted state (half-inserted state) based on the same principle of operation as described above. Or whether it is in a completely unfitted state can be easily identified and detected.

  In other words, this embodiment uses the output Vout from the pull-down resistor 14 as an electrical characteristic reflecting the electrical resistance between the male terminal 2 and the auxiliary terminal 16, and measures the output Vout to measure the male terminal. It is determined whether the fitting of 2 and the female terminal 3 is in a complete state, an incomplete state, or a complete unfitted state.

  As for the display of the detection result, a lighting display using an LED or the like can be used as in the above-described embodiment.

  In this embodiment, since the monitoring circuit 13 is provided on the power supply unit 9 side, for example, an incomplete fitting state (half-inserted state) is detected based on the value of Vout as a detection result. In such a case, the circuit operation can be changed such that the operation of the power supply circuit 11 is stopped.

  Furthermore, since the male terminal 2 and the auxiliary terminal 16 are provided on the same side, that is, on the power supply unit 9 side, the control board 10 that is the counterpart device connected via the connector 15 is not touched. There is no need to add, and there is an advantage that the connector connection abnormality detection device 17 is built on the power supply unit 9 in a self-contained manner, and the presence or absence of the connection abnormality can be detected without any signal being transmitted to or received from the control board 10.

  As described above, the example in which the sliding contact surface 7 of the male terminal 2 is divided into the sliding contact surface 7a on the distal end side and the sliding contact surface 7b on the base side to differentiate the resistance values has been described. The contact 19 that is in sliding contact with the female terminal 3 is formed at the tip of the male terminal 2, while the sliding contact surface 18 that is in sliding contact with the contact 19 is formed on the female terminal 3. The material of the slidable contact surface 18 in the female terminal 3 is differentiated so that the electrical resistance (for example, R [Ω]) is greater than the electrical resistance (eg, 0 [Ω]) of the slidable contact surface 18b on the base side. It may be.

When such a configuration is applied, the sliding contact surface 18b on the base side of the female terminal 3 and the contact 19 at the tip of the male terminal 2 are connected with the male terminal 2 completely inserted into the female terminal 3. The electrical resistance between the male terminal 2 and the female terminal 3 is minimized (for example, 0 [Ω]), and the sliding on the tip side of the female terminal 3 is performed with the male terminal 2 and the female terminal 3 being half-inserted. Although the contact surface 18a and the contact 19 at the tip of the male terminal 2 are connected to increase the electrical resistance between the male terminal 2 and the female terminal 3 (for example, R [Ω]), a substantial effect is obtained. Is the same as that of each embodiment described above.

It is the conceptual diagram simplified and shown about the connector structure of one Embodiment to which this invention is applied. It is the conceptual diagram which showed one set of male terminal and female terminal in the perfect fitting state. It is the conceptual diagram which showed 1 set of male terminals and female terminals in the incomplete fitting state (half-inserted state). It is the figure which showed the specific example of the connector which provided the connector structure side by the perfect fitting state. It is the figure which showed the specific example of the connector which provided the connector structure side by the incomplete fitting state (half-insertion state). It is the functional block diagram shown about one Embodiment of the connector connection abnormality detection apparatus using the connector structure which consists of a male terminal and a female terminal. FIG. 7A is a circuit diagram illustrating a specific configuration example of a monitoring circuit, FIG. 7A shows a resistance component in a completely fitted state, and FIG. 7B shows a resistance component in an incompletely fitted state. ing. It is the conceptual diagram simplified and shown about the connector structure which provided the auxiliary terminal side by side. It is the conceptual diagram which showed one set of male terminal, female terminal, and auxiliary terminal in the perfect fitting state. It is the conceptual diagram which showed one set of male terminal, female terminal, and auxiliary terminal in the incomplete fitting state (half-inserted state). It is the functional block diagram shown about the connector connection abnormality detection apparatus using the connector structure which consists of a male terminal, a female terminal, and an auxiliary terminal. It is the conceptual diagram shown by the complete fitting state about the connector structure which formed the contactor which slidably contacts with a female terminal at the front-end | tip of a male terminal, and formed the slidable contact surface which slidably contacts with a contactor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector 2 Male terminal 3 Female terminal 3a Contactor 4 Board | substrate 5 Socket 6 Contactor 7 Sliding contact surface 7a Sliding contact surface 7b of the male terminal in the front end side Sliding contact surface 8b of a male terminal 8 Connector connection abnormality detection apparatus 9 Power supply Unit 10 Control board 11 Power supply circuit 12 Control circuit 13 Monitoring circuit 14 Pull-down resistor 15 Connector 16 Auxiliary terminal 17 Connector connection abnormality detection device 18 Sliding contact surface 18a Sliding contact surface 18b on the female terminal The base side on the female terminal No sliding contact surface 19 Contact

Claims (3)

A connector structure comprising a male terminal and a female terminal, while the electrical resistance between the male terminal and the female terminal when the mating of the male terminal and the female terminal is in a full state is minimized, When the fitting between the male terminal and the female terminal is maintained in an incomplete state, at least the electrical resistance between the male terminal and the female terminal is larger than the minimum electrical resistance. , the material of the sliding surfaces of the male terminal in sliding contact surface or said female terminals of the female terminal in the male terminal, to differentiate the relative insertion direction between the male terminal and the female terminal With
An auxiliary terminal that maintains a steady contact with the female terminal through the process of inserting and removing the male terminal and the female terminal is provided on the male terminal side, and a pull-down resistor is connected to the base end of the auxiliary terminal. Based on the value of the output voltage output from the pull-down resistor when a DC voltage is applied to the male terminal, at least whether or not the fitting between the male terminal and the female terminal is in a complete state. connector abnormality detection apparatus characterized in that a monitoring circuit for detecting whether the intact. A contact that is in sliding contact with the male terminal is formed at the tip of the female terminal, while a sliding contact surface that is in sliding contact with the contact is formed on the male terminal, and a sliding contact surface on the tip side of the male terminal is formed. 2. The connector connection abnormality detecting device according to claim 1, wherein the material of the sliding contact surface of the male terminal is differentiated so that the electrical resistance is larger than the electrical resistance of the sliding contact surface on the base side. A contact that slides on the female terminal is formed at the tip of the male terminal, while a sliding contact surface that slides on the contact is formed on the female terminal, and a sliding contact surface on the tip side of the female terminal is formed. 2. The connector connection abnormality detection device according to claim 1, wherein the material of the sliding contact surface of the female terminal is differentiated so that the electrical resistance is larger than the electrical resistance of the sliding contact surface on the base side.

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