JP6738862B2 - Inspection equipment - Google Patents

Description

The present invention relates to an inspection device, for example, an inspection device that inspects whether or not a connection between an electric wire and a terminal between connectors of a wire harness is correct by checking whether or not there is continuity.

In the manufacturing process of wire harnesses in which connecting parts such as connectors are connected to both ends or intermediate parts of multiple electric wires, the wire harness is required before packing the finished wire harness that has undergone all processing steps. It is inspected whether it meets the specified specifications.

In this inspection process, for example, a continuity inspection that inspects whether the connection between the connectors of the wire harness is correct by the presence or absence of continuity, a visual inspection that inspects the type and mounting state of the exterior parts of the wire harness, the presence of damage, etc. Done.

Among these inspections, the continuity inspection needs to inspect the continuity and opening between the connector pins of all the connectors in order to surely find a connection mistake between the electric wire and the connector terminal (connector pin) during assembly. is there. Therefore, the larger the number of connector pins of the wire harness, the longer the inspection time of the continuity test tends to be.

Generally, in the continuity inspection of a wire harness, an automatic inspection technique using a computer is used in order to shorten the inspection time. This automatic inspection technology compares the input/output results of electrical signals for each wire of the wire harness to be inspected with the correct connection information of the wire harness to be inspected, and based on the comparison result, determines whether or not the connection between the connector pins is appropriate. This is a determination technique (see Patent Document 1). By performing the continuity inspection using the automatic inspection technique, it becomes possible to thoroughly inspect the suitability of the connection between the connector pins of the inspection target wire harness.

JP, 2014-206394, A

However, even if a continuity test is performed using the above-described automatic inspection technology, when an improper connection (error) between connector pins is detected, in which part of the wire harness there is a connection failure or a connection error. It is not easy for the operator to identify what is happening. For example, in a general automatic inspection technique, when an error is detected, character information indicating the connector pin where the error is detected is displayed on the computer screen. However, it is not easy to specify a specific defective part only by using the character information, and it may take a lot of time for the analysis work for specifying the defective part.

The present invention has been made in view of the above problems, and an object of the present invention is to improve work efficiency in a continuity inspection of a wire harness.

An inspection apparatus according to a representative embodiment of the present invention is based on a continuity inspection execution unit that conducts a continuity inspection between connection components included in a wire harness to be inspected, and an inspection result of the continuity inspection by the continuity inspection execution unit. A determination unit that determines whether or not the connection between the connection parts of the inspection target wire harness has, and a display control unit that displays the determination result by the determination unit on a display device, and the display control unit, When there is a connection component whose connection is determined to be inappropriate by the determination unit, error information including information of the connection component determined to be inappropriate connection is wire that schematically indicates the wire harness to be inspected. It is characterized in that it is displayed on the display device together with the image information of the harness.

According to the inspection device of the present invention, it is possible to improve the work efficiency in the continuity inspection of the wire harness.

It is a figure which shows the structure of the wire harness inspection system provided with the inspection apparatus which concerns on Embodiment 1. It is a figure which shows the structure of a wire harness typically. It is a perspective view which shows a work board typically. It is a figure which shows the functional block structure of the inspection apparatus which concerns on Embodiment 1. FIG. 5 is a diagram showing a display example of a continuity inspection result by the inspection device according to the first embodiment. FIG. 6 is a flowchart showing a flow of a continuity test performed by the test device according to the first embodiment. It is a figure which shows the functional block structure of the inspection apparatus which concerns on Embodiment 2.

1. 1. Outline of Embodiments First, an outline of typical embodiments of the invention disclosed in the present application will be described. In the following description, as an example, reference numerals in the drawings corresponding to the constituent elements of the invention are described in parentheses.

[1] An inspection device (2, 2A) according to a representative embodiment of the present invention includes a continuity inspection execution unit (21) for performing continuity inspection between connection components (13) included in a wire harness (1) to be inspected. ), and a determination unit (22) that determines whether or not the connection between the connection components of the inspection target wire harness is appropriate based on the inspection result of the continuity inspection performed by the continuity inspection execution unit, and the determination result by the determination unit. Is displayed on the display device (4), the display control unit has an improper connection when there is a connection component determined to be improperly connected by the determination unit. The error information (416, 414, 415) including the information of the connection component determined to be displayed is displayed on the display device together with the wire harness image information (411, 412, 413) schematically showing the wire harness to be inspected. It is characterized by

[2] In the above inspection apparatus, the display control unit may display the error information (414, 415) on the wire harness image information (412, 413) in an overlapping manner.

[3] In the above inspection apparatus, the display control unit includes, as the error information, image information (414) schematically showing a route between connection components (13) determined to be improperly connected, the wire harness. It may be displayed so as to be superimposed on the image information (412).

[4] In the inspection device, the display control unit determines that the connection is determined to be inappropriate when the determination unit determines that there is a connection component (13) to which the connection is determined to be inappropriate. The connection component image information (421) and the error terminal information (422) indicating the terminals of the connection component for which the connection of the connection component is determined to be improper may be displayed on the display device.

[5] In the above inspection device, the display control unit may display the error terminal information so as to overlap the connection component image information.

[6] In the above inspection apparatus, the display control unit, when there is a connecting component determined to be inappropriately connected by the determining unit, a terminal of the connecting component determined to be inappropriately connecting the connecting component. Information on the circuit including (433, 431, 432) may be displayed on the display device.

[7] The inspection device further includes a self-check unit (26) for determining whether or not the inspection device can normally operate, and the self-check unit instructs the continuity inspection execution unit to perform the inspection. Conducts a continuity test between the connecting parts of the test wire harness (1X) different from the target wire harness, and inspects the determination unit for the continuity test of the test wire harness by the continuity test execution unit. Based on the result, the suitability of the connection between the connecting parts of the test wire harness is determined, the self-check unit, based on the determination result of the test inspection wire harness by the determination unit, the inspection device, You may judge whether it can operate|move normally.

2. Specific Examples of Embodiments Specific examples of the embodiments of the present invention will be described below with reference to the drawings. In the following description, the constituent elements common to the respective embodiments are designated by the same reference numerals, and repeated description will be omitted. Further, it should be noted that the drawings are schematic, and the dimensional relationship of each element, the ratio of each element, and the like may differ from reality. Even between the drawings, there may be a case where portions having different dimensional relationships or ratios are included.

<<Embodiment 1>>
FIG. 1 is a diagram showing a configuration of a wire harness inspection system including the inspection device according to the first embodiment.
The wire harness inspection system 100 shown in the figure shows whether or not the connection between the connecting parts of the wire harness as a finished product assembled through various processing steps in the wire harness manufacturing process is correct. This is a system for conducting a continuity test that checks the presence or absence. In the wire harness manufacturing process, the wire harness inspection system 100 conducts a continuity test on the same manufacturing line (in-line) as the processing operation of attaching exterior parts and the like to a subassembly composed of a plurality of electric wires to which connecting parts are connected. It is possible.

As shown in FIG. 1, the wire harness inspection system 100 includes a work board 31, on which the wire harness 1 to be inspected is placed, an inspection device 2, and a display device 4.

<Wire harness>
FIG. 2 is a diagram schematically showing the configuration of the wire harness.
As shown in FIG. 2, the wire harness 1 has a plurality of electric wires 12 and a connector 13 connected to the ends of the corresponding electric wires 12. Note that the connector 13 is an example of a connection component, and for example, a case where the connection component is a connection terminal or the like is also included in the example of the embodiment.

The connector 13 is, for example, a multi-core connector having a plurality of connector terminals. The connector 13 has, for example, a partition space (terminal room) formed for each of a plurality of connector terminals. In the wire harness 1, the ends of the electric wires 12 are inserted and fixed in the respective terminal chambers of the connector 13, so that the connector terminals of the connector 13 are formed.

Here, the connector terminal of the connector 13 is an end portion (contact) of the connector 13 for realizing electrical connection between the external terminal of the external device and the like and each electric wire 12 of the connector 13. For example, when a crimp terminal is formed at the end of the electric wire 12 and the crimp terminal is inserted and fixed in the terminal chamber of the connector 13, the crimp terminal becomes the connector terminal of the connector 13. When a metal member is provided in the terminal chamber of the connector 13 and the metal member and the end of the electric wire 12 are connected by soldering or the like, the metal member serves as the connector terminal of the connector 13.

The wire harness 1 is formed by bundling a plurality of electric wires 12 to which a connector 13 is connected with an exterior component 14 such as a grommet, a protective material, a tape, and a binding band.

<Working board>
FIG. 3 is a perspective view schematically showing the work board 31.
As shown in the figure, the work board 31 is a stand for assembling a wire harness, and is also called an ASSY board. For example, in a state in which the subassembly including the plurality of electric wires 12 to which the connector 13 is connected is placed on the work board 31, the worker attaches the exterior component 14 such as tape or grommet to the subassembly.

The work board 31 is movable by a conveyor (not shown) in the wire harness manufacturing line. For example, after the finishing work of attaching the exterior component 14 is completed, the work board 31 on which the finished wire harness 1 with the exterior component 14 is placed is subjected to a visual inspection from a work section (station) for performing the machining work. It is transported by a conveyor to a work section for conducting a continuity inspection.

The work board 31 has, in addition to a catch jig 34 for appropriately holding the wire harness 1 (or a subassembly), a connector jig for electrically connecting the inspection device 2 and the wire harness 1 to be inspected. The tool 35, the collective terminal block 36, and the inspection wiring 37 are provided.

The connector jig 35 has one end of a rod-shaped member 35a attached to a work surface 31a, which is one main surface of the work board 31, and a connector 35b at the other end of the rod-shaped member 35a. The inspection wiring 37 is connected to each connector pin of the connector 35b. Each inspection wiring 37 connected to each connector 35b extends to the back surface 31b through a hole 31c penetrating the work surface 31a of the work board 31 and the back surface 31b which is the other surface of the work board 31. The inspection wiring 37 connected to each connector jig 35 is connected to the collective terminal block 36.

The collective terminal block 36 is a terminal block having a plurality of terminals for electrically connecting to the inspection device 2. Each terminal of the collective terminal block 36 is connected to each connector pin of the corresponding connector 35b of each connector jig 35 via the inspection wiring 37.

<Display device>
The display device 4 is a device that is connected to the inspection device 2 and displays operation information for operating the inspection device 2 and the inspection result of the continuity inspection by the inspection device 2 on the screen 41. The display device 4 is, for example, a liquid crystal display, an organic EL display, or the like.

<Inspection device>
FIG. 4 is a diagram showing a functional block configuration of the inspection apparatus according to the first embodiment.
The inspection device 2 is a device that conducts a continuity inspection of the inspection target wire harness 1. As shown in FIG. 4, the inspection device 2 includes, as functional blocks, an input/output unit (connection integration unit) 24, a continuity inspection execution unit 21, a determination unit 22, and a display control unit 23.

Each functional block forming the inspection device 2 is realized by cooperation between the hardware resources of the inspection device 2 and software. That is, the inspection device 2 includes, for example, as a hardware resource, a program processing device such as MCU, a storage device such as RAM or ROM, a power supply circuit, an AC/DC converter, a DC/AC converter, a communication circuit, and an input/output. An input/output unit 24 and a continuity check execution unit 21 having peripheral circuits such as an interface circuit, and the program processing device executes arithmetic processing according to a program stored in the storage device to control the peripheral circuits. The determination unit 22 and the display control unit 23 are realized.

The above-mentioned program (continuity inspection program) may be distributed via a network, or may be distributed by being written in a computer-readable storage medium (Non-transitory computer readable medium) such as a CD-ROM. It may be possible.

The input/output unit 24 is a functional unit for electrically connecting an internal circuit (not shown) of the inspection device 2 and the wire harness 1 on the work board 31. For example, as shown in FIG. 1, the input/output unit 24 has a plurality of connector pins 241, and a signal wiring 242 for electrically connecting each connector pin 241 and the internal circuit of the inspection device 2. For example, as shown in FIG. 1, by mating the connector pins 241 of the input/output unit 24 with the collective terminal block 36, the input/output unit 24 and each terminal of the collective terminal block 36 are electrically connected. As a result, the inspection target wire harness 1 connected to the connector jig 35 of the work board 31 and the internal circuit of the inspection device 2 are electrically connected.

The continuity test execution unit 21 is a functional unit that conducts a continuity test between the connectors 13 of the wire harness 1 to be inspected. The continuity test execution unit 21 inspects a continuity state (short circuit or open) between designated connector terminals of the plurality of connectors 13 in the wire harness 1. For example, the continuity test execution unit 21 inspects a short circuit or an open circuit between the specified connector terminals based on the resistance value (or capacitance value) when a voltage (or current) is applied between the specified connector terminals. For example, the continuity test execution unit 21 inspects the continuity state of all combinations of connector terminals of all connectors 13 included in the wire harness 1 to be inspected.

The determination unit 22 is a functional unit that determines the suitability of the connection between the connectors in the inspection target wire harness 1 based on the inspection result of the continuity inspection by the continuity inspection execution unit 21. For example, the determination unit 22 stores, in advance, the master information, which is stored in the storage device in the inspection device 2 and indicates the correct conduction state between the connectors 13 (connector terminals) of the wire harness 1 to be inspected, and the conduction inspection execution unit. By comparing with the inspection result of the conduction state between the respective connectors by the reference numeral 21, it is judged whether or not the connection state of each connector 13 is proper.

The display control unit 23 is a functional unit that controls the display device 4 to display various information on the screen 41 of the display device 4. The display control unit 23 causes the determination result of the determination unit 22 to be displayed on the screen 41 of the display device 4.

FIG. 5 is a diagram showing a display example of the continuity inspection result by the inspection device according to the first embodiment.
FIG. 1 shows an example of information displayed on the screen 41 of the display device 4 when a connector 13 having an improper connection to the inspection target wire harness 1 is found by the continuity inspection by the inspection device 2. There is.

The display control unit 23 includes error information including information about the connector 13 that is determined to be improper when the determination unit 22 determines that the connection is improper in the wire harness 1 to be inspected. 416 is displayed on the display device 4 together with the wire harness image information 411 that schematically shows the wire harness 1 to be inspected.

For example, as shown in FIG. 5, the display control unit 23 causes the display area 410 on the screen 41 of the display device 4 to display the wire harness image information 411. The wire harness image information 411 is, for example, an image schematically showing image information 413 schematically showing the connector 13 of the wire harness 1 to be inspected and a bundle (main line) of the electric wires 12 connecting between the connectors 13. And information 412.

Further, for example, as shown in FIG. 5, the display control unit 23 causes the display area 410 on the screen 41 to display the wire harness image information 411 and the error information 416.

The error information 416 is, for example, as shown in FIG. 5, error connector information 415 indicating identification information (for example, a connector number) of the connector 13 determined to be improperly connected, or between connectors determined to be improperly connected. Error path image information 414 indicating a path (more preferably between the connector terminals) is included.

The display control unit 23 displays the error information overlaid on the wire harness image information 411. For example, as shown in FIG. 5, the display control unit 23 uses, as the error connector information 415, a circle surrounding the image information 413 of the connector 13 determined to be improperly connected and a connector number of the connector 13 as a wire. It is displayed in the vicinity of the image information 413 of the corresponding connector 13 on the harness image information 411. In addition, the display control unit 23 displays the error route image information 414 of the route between the connectors, which is determined to be improperly connected, on the corresponding route on the wire harness image information 411. At this time, it is preferable to display the main line in the wire harness image information 411 and the error route image information 414 in mutually different colors.

In addition, in the display area 410 of the display device 4 of FIG. 5, as an example, when it is determined that the connection between the four connectors 13 specified by the connector numbers 8, 16, 20, and 31 of the wire harness 1 is inappropriate. The display example of is shown.

Further, the display control unit 23, when there is a connector 13 determined to be improperly connected by the determination unit 22, the connector image information 421 schematically showing the connector 13 determined to be improperly connected, and The display device 4 is caused to display the error terminal information 422 indicating the connector terminal of which the connection is determined to be improper among the connector terminals of the connector 13.

For example, as shown in FIG. 5, the display control unit 23 displays the connector image information 421 in the display area 420 on the screen 41 of the display device 4. The connector image information 421 includes, for example, image information indicating the terminal room of the connector 13 and identification information (circuit symbol) of the connector terminal corresponding to each terminal room.

The display control unit 23 also causes the display area 420 on the screen 41 to display the error terminal information 422. At this time, the display control unit 23 may display the error terminal information 422 so as to overlap the connector image information 421. For example, as shown in FIG. 5, a rectangular graphic as error terminal information 422 is displayed in the terminal room of the connector 13 indicated by the connector image information 421 corresponding to the connector terminal determined to be improperly connected. To do. This makes it possible to notify the operator which connector terminal of the connector 13 is in an improperly connected state.

Further, as shown in FIG. 5, when there are a plurality of connector terminals determined to be improperly connected, the identification information of these connector terminals may be displayed by a tab. For example, in FIG. 5, when a tab 423_1 displaying the information of the connector 13 of the connector number 8 and a tab 423_2 displaying the information of the connector 13 of the connector number 20 are displayed on the upper side of the display area 420. It is shown. By selecting one of these tabs, the connector image information 421 and the error terminal information 422 regarding the connector of the connector number corresponding to the selected tab are displayed in the display area 420. As an example, FIG. 5 shows a case where the tab 423_1 is selected and the connector image information 421 and the error terminal information 422 of the connector 13 having the connector number 8 are displayed in the display area 420.

Further, when there is a connector 13 whose connection is determined to be inappropriate by the determination unit 22, the display control unit 23 displays information on a circuit including a connector terminal determined to be inappropriately connected to the display device. Display in 4.

Here, the circuit means a connector in which the connector terminals of each connector 13 are properly connected by the electric wire 12.

For example, as shown in FIG. 5, the display control unit 23 causes the display area 430 on the screen 41 of the display device 4 to display the circuit information 433. The circuit information 433 is, for example, information 431 (for example, wire type, wire diameter, wire color, etc.) of the electric wire 12 to be connected to the connector terminal determined to be improperly connected, or the circuit of the connector terminal. It includes identification information 432 (for example, a circuit symbol, a terminal name of a connector terminal, the presence or absence of plating, a terminal symbol of a connector terminal, etc.).

For example, when any one of the tabs 423_1 and 423_2 in the display area 420 described above is selected, the display control unit 23 displays the circuit information 433 including the connector terminal corresponding to the selected tab in the display area 430. Display inside.

<Continuity test by the inspection device 2 according to the first embodiment>
Next, the flow of the continuity inspection by the inspection device 2 according to the first embodiment will be described.

FIG. 6 is a flow chart showing the flow of the continuity test by the test device according to the first embodiment.
First, as shown in FIG. 1, each connector 13 of the wire harness 1 to be inspected on the work board 31 is connected to the corresponding connector jig 35 on the work board 31 (step S1). For example, an operator in charge of the working process removes the wire harness 1 that has finished the working process from the catch jig 34, and connects each connector 13 of the wire harness 1 to the corresponding connector jig 35.

Next, the inspection device 2 reads the identification information of the inspection target wire harness 1 (step S2). The identification information of the wire harness 1 is stored as, for example, a two-dimensional code such as a bar code or a QR code (registered trademark), and the two-dimensional code is attached to the exterior parts of the wire harness 1 or the work board 31. ing. For example, the operator scans the two-dimensional code attached to the wire harness 1 or the like using the two-dimensional code reader connected to the inspection device 2 and causes the inspection device 2 to read the identification information of the wire harness 1. ..

Next, the inspection device 2 reads the continuity inspection program corresponding to the inspection target wire harness 1 based on the identification information read in step S2 (step S3). For example, in the auxiliary storage device such as the HDD inside the inspection device 2, various continuity inspection programs for the wire harness are stored. The inspection device 2 reads the continuity inspection program corresponding to the identification information read in step S2 from the auxiliary storage device and expands it in the main storage device such as RAM.

Next, as shown in FIG. 1, the input/output unit (connection coupling unit) 24 of the inspection device 2 is connected to the collective terminal block 36 of the work board 31 (step S4). For example, the connector pin 241 of the connection mating portion 24 is mated with the connector of the collective terminal block 36. The input/output unit 24 and the collective terminal block 36 may be automatically connected by a robot. For example, a fitting machine is provided on a conveyer that conveys the work board 31, and when the work board 31 arrives at a station for conducting a continuity test, the fitting machine operates to connect the connection mating unit 24 to the collective terminal block 36. You may connect to.

Next, the inspection device 2 starts the continuity inspection of the inspection target wire harness 1 (step S5). For example, when the inspection device 2 detects in step S4 that the connection integration part (input/output part) 24 and the collective terminal block 36 are electrically connected, the inspection device 2 conducts according to the continuity inspection program read in step S3. Perform an inspection. Specifically, the continuity inspection execution unit 21 inspects the continuity state between the connectors 13 included in the inspection target wire harness 1 by the method described above, and the determination unit 22 performs the continuity inspection execution unit by the method described above. Based on the inspection result by 21, the suitability of the connection between the connectors 13 is determined.

The inspection device 2 determines whether or not the connector 13 having an improper connection is found by the continuity inspection in step S5 (step S6).

When the connector 13 having an improper connection is found, the inspection device 2 causes the display device 4 to display information indicating that an error has been found in the inspection target wire harness 1 (step S7). Specifically, as shown in FIG. 5, in addition to the wire harness image information 411, the display control unit 23 causes the error route image information 414, the error connector information 415, the connector image information 421, the error terminal information 422, and The display device 4 is caused to display various kinds of information relating to the improperly connected connector, such as the circuit information 433.

On the other hand, in step S7, when the improperly connected connector 13 is not found, the inspection device 2 displays information indicating that the improperly connected connector 13 is not found in the inspection target wire harness 1. No. 4 is displayed (step S8).
With the above procedure, the continuity test is performed by the inspection device 2.

<Effects of inspection equipment>
As described above, in the inspection device 2 according to the first embodiment, when there is the connector 13 determined to be improper in the continuity inspection of the wire harness 1 to be inspected, the connector 13 determined to be improperly connected. The error information 416 including the information is displayed on the display device 4 in association with the wire harness image information 411 that schematically shows the wire harness 1 to be inspected.

According to this, the worker in charge of the continuity test can easily recognize which connector 13 is improperly connected in the wire harness 1 to be inspected. It becomes easier to specify a defective part, and the time required for the analysis work for specifying a defective part can be shortened as compared with the conventional case.

In addition, when displaying the error information 416 regarding the continuity test on the display device 4, the inspection device 2 displays the error information 416 over the wire harness image information 411. For example, as shown in FIG. 5, the error route image information 414 indicating the route between the connectors determined to be improperly connected is displayed on the wire harness image information 411 (image information 412 of the electric wire 12).

According to this, the worker can more clearly recognize which electric wire 12 is related to the error in the wire harness 1 to be inspected. It becomes easier to identify the location.

In addition, when there is a connector 13 that is determined to be improperly connected, the inspection device 2 determines that the connector image information 421 that schematically indicates the connector 13 that is determined to be improperly connected and that the connection of the connector is incorrect. The display device 4 displays the error terminal information 422 indicating the connector terminal determined to be appropriate. For example, as shown in FIG. 5, the inspection device 2 displays the error terminal information 422 so as to overlap the connector image information 421.
According to this, the operator can easily understand which connector terminal is in an inappropriate connection state in the connector 13 in which the error is pointed out.

Further, when there is the connector 13 which is determined to be improperly connected, the inspection device 2 causes the display device 4 to display the information 433 of the circuit including the connector terminal which is determined to be improperly connected. For example, as shown in FIG. 5, information 431 (for example, wire type, wire diameter, wire color, etc.) of the electric wire 12 to be connected to the connector terminal determined to be improperly connected, and identification information of the connector terminal. By displaying 432 (circuit symbol, terminal name, terminal symbol, etc.) on the display device 4 as the information 433 of the circuit, it is possible for the operator to obtain more information related to the connector 13 determined to be improperly connected. Since it is possible to provide information, it becomes easier to identify a specific defective portion in the wire harness 1.

As described above, according to the inspection device 2 according to the first embodiment, it is possible to improve the work efficiency in the continuity inspection of the wire harness.

<<Embodiment 2>>
FIG. 7 is a diagram showing a functional block configuration of the inspection device 2A according to the second embodiment.

The inspection apparatus 2A according to the second embodiment differs from the inspection apparatus 2 according to the first embodiment in that a self-check process for determining whether or not the inspection apparatus 2A can operate normally is executed, and other points. In, the same as the inspection apparatus 2 according to the first embodiment.

In the inspection device 2 of the wire harness inspection system 100A, the self-check unit 26 executes a self-check process for determining whether or not the inspection device 2A can normally operate at a predetermined timing. The self-check process is a process for conducting a continuity test of the test wire harness 1X prepared separately from the wire harness 1 to be inspected, and confirming whether or not the determination result of the inspection device 2A based on the inspection result is correct. is there.

Here, the predetermined timing is, for example, the timing after the power-on reset at the time of starting the inspection device 2A is released or before the execution of the first continuity inspection of the wire harness 1 after the inspection device 2A is started. The timing includes the timing, the timing at which a signal instructing the execution of the self-check process is input by the operator operating the inspection apparatus 2A, the timing specified by the internal timer of the inspection apparatus 2A, and the like.

In the self-check processing, first, the self-check unit 26 connects the test wire harness 1X, which is different from the wire harness to be inspected, to the inspection device 2A.

The test wire harness 1X has, for example, at least one electric wire and two connectors connected to both ends of the electric wire. The test wire harness 1X is provided, for example, on the back surface 31b of the work board 31 and can be electrically connected to the collective terminal block 36 via a dedicated connector jig (not shown). That is, the connection destination of the collective terminal block 36 can be switched by a switch or the like between the connector jig 35 to which the wire harness 1 to be inspected is connected and the connector jig to which the test wire harness 1X is connected. ing.

The self-check unit 26 executes the self-check process according to the procedure described below.
First, the self-check unit 26 switches the switch to establish the connection between the collective terminal block 36 and the test wire harness 1X. After that, the self-check unit 26 causes the continuity check execution unit 21 to execute the continuity test between the connectors of the test wire harness 1X.

Next, the self-check unit 26 causes the determination unit 22 to determine whether the connection between the connectors included in the test wire harness is appropriate based on the inspection result of the continuity inspection of the test wire harness by the continuity test execution unit 21. .. For example, the determination unit 22 uses the continuity check execution unit 21 to store the master information, which is stored in advance in the storage device of the inspection device 2 and indicates the correct conduction state between the connectors (connector terminals) of the test wire harness 1X. Whether or not the connection state of each connector 13 is proper is determined by comparing with the inspection result of the conduction state between each connector of the actual test wire harness 1X.

Next, the self-check unit 26 determines whether or not the inspection device 2A is operating normally based on the determination result of the test wire harness 1X by the determination unit 22.
For example, the master information that defines that a predetermined connector terminal A of the test wire harness 1X is conducting is a correct connection state and the test wire harness 1X in which the connector terminal A is intentionally opened. Let us consider a case where preparation is made and a continuity test is executed using these.

In this case, when the determination unit 22 determines that the connection of the connector terminal A is inappropriate, for example, the determination unit 22 determines that “the connector terminal A is in the open state and the connection is inappropriate”. In this case, the self-check unit 26 determines that the inspection device 2A is operating normally.
On the other hand, when the determination unit 22 determines that the connection of the connector terminal A is appropriate, for example, when the determination unit 22 determines that “the connector terminal A is in the conductive state and the connection is proper”, the self-check is performed. The unit 26 determines that the inspection device 2A is not operating normally.

After that, the self-check unit 26 causes the display control unit 23 to display the result of the self-check processing on the display device 4. This allows the operator to confirm that the inspection device 2A is operating normally.

As described above, since the inspection device 2A according to the second embodiment automatically performs the self-check whether the inspection device 2A can make a normal determination based on the continuity test, a defective product may be detected due to a defect of the inspection device 2A. It is possible to prevent the wire harness from being shipped, and it is possible to further improve the work efficiency in the continuity inspection of the wire harness.

<<Expansion of Embodiment>>
Although the invention made by the present inventors has been specifically described based on the embodiments, the present invention is not limited thereto and needless to say, various modifications can be made without departing from the scope of the invention. Yes.

For example, the above-mentioned flowchart shows an example for explaining the operation and is not limited to this. That is, the steps shown in each figure of the flowchart are specific examples, and the present invention is not limited to this flow. For example, the order of some processes may be changed, another process may be inserted between each process, and some processes may be performed in parallel.

DESCRIPTION OF SYMBOLS 1... Wire harness, 1X... Test wire harness, 2, 2A... Inspection device, 4... Display device, 12... Electric wire, 13... Connector, 14... Exterior parts, 21... Continuity inspection execution part, 22... Judgment part, 23 ... Display control section, 24... Input/output section (connection/coupling section), 26... Self-check section, 31... Work board, 31a... Work surface, 31b... Rear surface, 31c... Hole, 34... Catch jig, 35... Connector Jig, 35a... Rod-shaped member, 35b... Connector, 36... Collective terminal block, 37... Inspection wiring, 41... Screen, 100, 100A... Wire harness inspection system, 241... Connector pin, 242... Signal wiring, 410, 420, 430... Display area, 411... Wire harness image information, 412... Wire 13 image information, 413... Connector 13 image information, 414... Error route image information, 415... Error connector information, 421... Connector image information, 422... Error Terminal information, 423_1, 423_2... Tab, 431... Information of electric wire 12, 432... Identification information of connector terminal, 433... Information of circuit.

Claims (7)

A continuity inspection execution unit that conducts a continuity inspection between the connection parts of the inspection target wire harness,
Based on the inspection result of the continuity inspection by the continuity inspection execution unit, a determination unit that determines the appropriateness of the connection between the connection components of the inspection target wire harness,
A display control unit for displaying the determination result by the determination unit on a display device,
The display control unit, when there is a connection component determined to be inappropriate connection by the determination unit, error information including information of the connection component determined to be inappropriate connection, the wire harness of the inspection target An inspection device for displaying on the display device together with wire harness image information schematically showing The inspection apparatus according to claim 1,
The display control unit displays the error information by superimposing it on the wire harness image information. The inspection apparatus according to claim 2,
The display control unit displays, as the error information, image information that schematically shows a route between connection components determined to be improperly connected, and displays the image information overlaid on the wire harness image information. .. The inspection apparatus according to any one of claims 1 to 3,
The display control unit, when there is a connection component determined to be improperly connected by the determination unit, connection component image information schematically showing the connection component determined to be improperly connected, and the connection component. An inspection apparatus, which causes the display device to display connection component terminal information indicating a terminal of a connection component determined to be improperly connected. The inspection apparatus according to claim 4,
The display control unit displays the connection component terminal information on the connection component image information in an overlapping manner. The inspection apparatus according to any one of claims 1 to 5,
The display control unit displays the information of the circuit including the terminal of the connection component whose connection is determined to be inappropriate when the connection component is determined to be inappropriately connected by the determination unit. Inspection device characterized by being displayed on the device. The inspection apparatus according to any one of claims 1 to 6,
Further comprising a self-check unit for determining whether the inspection device can operate normally,
The self-check unit causes the continuity check execution unit to perform a continuity test between connection components included in a test inspection wire harness different from the inspection target wire harness, and Based on the inspection result of the continuity inspection of the test inspection wire harness by the continuity inspection execution unit, to determine the suitability of the connection between the connecting parts of the test inspection wire harness,
The self-check unit determines whether or not the inspection device can operate normally, based on a result of the determination of the test inspection wire harness by the determination unit.

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