JP2019219360A - Inspection device - Google Patents

Abstract

To improve operation efficiency of continuity inspection on a wiring harness.SOLUTION: An inspection device has: a continuity inspection execution part which inspects continuity between connection components that a wiring harness to be inspected has; a determination part which determines, on the basis of an inspection result of the continuity inspection by the continuity inspection execution part, whether a connection between the connection components that the wiring harness to be inspected has is proper; and a display control part which makes a display device (4) display a determination result obtained by the determination part. The display control part makes, when there is a connection component whose connection is determined by the determination part to be improper, the display device display error information (416, 414, and 415) including information on the connection component whose connection is determined to be improper together with wiring harness image information (411, 412, and 413) schematically showing the wiring harness to be inspected.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an inspection apparatus, for example, an inspection apparatus that inspects whether or not connections of wires and terminals between connectors of a wire harness are correct based on the presence or absence of conduction.

  In the manufacturing process of a wire harness in which connecting parts such as connectors are connected to both ends and intermediate portions of a plurality of electric wires, the wire harness is required before packing the finished wire harness after all the processing steps. A check is made to see if the specified specifications are satisfied.

  In this inspection process, for example, a continuity inspection for inspecting whether or not the connection between the connectors of the wire harness is correct based on the presence or absence of continuity, and an appearance inspection for inspecting the type and mounting state of the exterior parts of the wire harness, whether or not there is damage, etc. Done.

  Of these inspections, the continuity inspection needs to inspect the continuity and openness of all the connector pins of the connector in order to reliably detect a connection error or the like between the electric wire and the connector terminal (connector pin) during assembly. is there. Therefore, as the number of connector pins of the wire harness increases, the inspection time of the continuity inspection tends to increase.

  Generally, in the continuity inspection of a wire harness, an automatic inspection technique using a computer is used to shorten the inspection time. This automatic inspection technology compares the input and 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 the connection between the connector pins is appropriate. This is a technique for determining (see Patent Document 1). By performing the continuity test by using the automatic inspection technology, it is possible to inspect the connection between the connector pins of the wire harness to be inspected without fail.

JP 2014-206394 A

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

  The present invention has been made in view of the above-described problems, and has as its object to improve work efficiency in a wire harness continuity test.

  An inspection device according to a representative embodiment of the present invention includes a continuity test execution unit that performs a continuity test between connection components of a wire harness to be inspected, and a test result of the continuity test performed by the continuity test execution unit. A determination unit that determines whether connection between connection components of the wire harness to be inspected is appropriate, and a display control unit that displays a determination result by the determination unit on a display device, wherein the display control unit includes: If there is a connection component determined to be improperly connected by the determination unit, error information including information on the connection component determined to be improperly connected is indicated by a wire schematically indicating the wire harness to be inspected. It is characterized in that it is displayed on the display device together with the harness image information.

  ADVANTAGE OF THE INVENTION According to the test | inspection apparatus which concerns on this invention, it becomes possible to improve the work efficiency in the continuity test of a wire harness.

1 is a diagram illustrating a configuration of a wire harness inspection system including an inspection device according to a first embodiment. It is a figure which shows the structure of a wire harness typically. It is a perspective view which shows a work board typically. FIG. 2 is a diagram showing a functional block configuration of the inspection device according to the first embodiment. FIG. 4 is a diagram showing a display example of a continuity test result by the test device according to the first embodiment. FIG. 4 is a flowchart showing a flow of a continuity test by the test device according to the first embodiment; FIG. 9 is a diagram illustrating a functional block configuration of an inspection device according to a second embodiment.

1. First, the outline of a typical embodiment 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 components of the invention are described in parentheses.

  [1] An inspection apparatus (2, 2A) according to a representative embodiment of the present invention includes a continuity inspection execution unit (21) that performs an continuity inspection between connection components (13) included in a wire harness (1) to be inspected. ), A judgment unit (22) for judging whether or not the connection between the connection parts of the wire harness to be inspected is appropriate based on the inspection result of the continuity inspection by the continuity inspection execution unit, and a judgment result by the judgment unit And a display control unit (23) that causes the display unit (4) to display the connection. The display control unit determines that the connection is inappropriate when there is a connection component determined to be inappropriate by the determination unit. The error information (416, 414, 415) including the information of the connection part determined as the above is displayed together with the wire harness image information (411, 412, 413) schematically showing the wire harness to be inspected. Wherein the display on.

  [2] In the above inspection device, the display control unit may display the error information (414, 415) so as to overlap the wire harness image information (412, 413).

  [3] In the inspection device, the display control unit may include, as the error information, image information (414) schematically showing a path between the connection components (13) determined to be improperly connected to 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 inappropriate when there is a connection component (13) whose connection is determined to be inappropriate by the determination unit. May be displayed on the display device, and connection terminal image information (421) schematically showing the above and error terminal information (422) indicating the terminal of the connection component for which connection of the connection component has been determined to be inappropriate.

  [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 device, when there is a connection component determined to be inappropriately connected by the determination unit, the display control unit determines a terminal of the connection component determined to be inappropriately connected to the connection component. May be displayed on the display device.

  [7] The inspection apparatus further includes a self-check unit (26) for determining whether the inspection apparatus can operate normally. The self-check unit instructs the continuity inspection execution unit to perform the inspection. The continuity test is performed between the connection components of the test wire harness (1X) different from the target wire harness, and the continuity test execution unit checks the continuity test of the test wire harness with the determination unit. Based on the result, determine whether the connection between the connection components of the test wire harness is appropriate, the self-check unit, based on the determination result of the test inspection wire harness by the determination unit, the inspection device, It may be determined whether or not normal operation is possible.

2. Specific Example of Embodiment Hereinafter, a specific example of the embodiment of the present invention will be described with reference to the drawings. In the following description, components common to the embodiments will be denoted by the same reference numerals, and repeated description will be omitted. Further, it is necessary to keep in mind that the drawings are schematic, and the dimensional relationships of the respective elements, the ratios of the respective elements, and the like may be different from actual ones. Even in the drawings, there may be cases where portions having different dimensional relationships and ratios are included.

Embodiment 1
FIG. 1 is a diagram illustrating 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 FIG. 1 is a wire harness manufacturing process that checks whether the connection between the connection parts of the wire harness as a finished product assembled through various processing steps is correct. This is a system for conducting a continuity test for checking the presence or absence. In the manufacturing process of the wire harness, the wire harness inspection system 100 performs a continuity inspection on the same manufacturing line (in-line) as a processing operation of attaching an exterior component or the like to a subassembly including a plurality of wires to which connection components are connected. It has become 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 illustrating a configuration of the wire harness.
As shown in FIG. 2, the wire harness 1 includes a plurality of electric wires 12 and a connector 13 connected to an end of the corresponding electric wire 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 the plurality of connector terminals. In the wiring harness 1, the connector terminal of the connector 13 is formed by inserting and fixing the end of the electric wire 12 into each terminal room of the connector 13.

  Here, the connector terminal of the connector 13 is a terminal portion (contact) of the connector 13 for realizing electrical connection between an external terminal or the like of an external device and each 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 room of the connector 13, the crimp terminal becomes a connector terminal of the connector 13. When a metal member is provided in the terminal room 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 a 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.

<Work panel>
FIG. 3 is a perspective view schematically showing the work board 31.
As shown in the figure, a work board 31 is a table for assembling a wire harness, and is also called an ASSY board. For example, in a state where 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 performs an operation of attaching the exterior component 14 such as a tape or a grommet to the subassembly.

  The work board 31 is made movable by a conveyor (not shown) in a wire harness production line. For example, after the completion of the work of attaching the exterior parts 14, the work board 31 on which the wire harness 1 as the finished product to which the exterior parts 14 are attached is placed from a work section (station) for performing the appearance work. And conveyed to a work section for conducting continuity inspection.

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

  The connector jig 35 has one end of the bar-shaped member 35a attached to a work surface 31a, which is one main surface of the work board 31, and has a connector 35b at the other end of the bar-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 that penetrates the work surface 31a of the work board 31 and the back surface 31b that 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 connector 35 b of each corresponding 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, on a screen 41, operation information for operating the inspection device 2, an inspection result of a continuity inspection by the inspection device 2, and the like. The display device 4 is, for example, a liquid crystal display or an organic EL display.

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

  Each functional block constituting the inspection device 2 is realized by cooperation of hardware resources and software of the inspection device 2. That is, the inspection device 2 includes, for example, a program processing device such as an MCU, a storage device such as a RAM or a ROM, a power supply circuit, an AC / DC converter, a DC / AC converter, a communication circuit, and an input / output device as hardware resources. A peripheral circuit such as an interface circuit, and the program processing device controls the peripheral circuit by executing arithmetic processing according to a program stored in the storage device, so that the input / output unit 24, the continuity test execution unit 21 , A determination unit 22, and a display control unit 23.

  The above program (continuity inspection program) may be distributed via a network, or may be written and distributed on 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 includes a plurality of connector pins 241 and signal wirings 242 for electrically connecting each connector pin 241 and an internal circuit of the inspection device 2. For example, as shown in FIG. 1, by fitting the connector pins 241 of the input / output unit 24 to 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 wiring harness 1 to be inspected 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 performs a continuity test between the connectors 13 of the wire harness 1 to be tested. The continuity inspection execution unit 21 inspects the continuity (short circuit or open) between the designated connector terminals of the plurality of connectors 13 in the wire harness 1. For example, the continuity inspection execution unit 21 inspects a short circuit or an open circuit between the connector terminals based on a resistance value (or a capacitance value) when a voltage (or a current) is applied between the designated connector terminals. For example, the continuity inspection execution unit 21 inspects the continuity state of all combinations of the connector terminals of all the connectors 13 included in the wire harness 1 to be inspected.

  The determination unit 22 is a functional unit that determines whether the connection between the connectors in the inspection target wire harness 1 is appropriate based on the inspection result of the continuity test performed by the continuity test execution unit 21. For example, the determination unit 22 includes a master information indicating a correct conduction state between the connectors 13 (connector terminals) of the wiring harness 1 to be inspected, which is stored in a storage device in the inspection device 2 in advance, and a continuity inspection execution unit. By comparing the result of the test of the continuity between the connectors by the connector 21, it is determined whether or not the connection of the connectors 13 is proper.

  The display control unit 23 is a functional unit that controls the display device 4 and displays various information on a 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 a continuity test result by the test device according to the first embodiment.
FIG. 2 shows an example of information displayed on the screen 41 of the display device 4 when a connector 13 that is inappropriately connected to the wire harness 1 to be inspected is found by the continuity inspection by the inspection device 2. I have.

  The display control unit 23, when the connector 13 determined to be improperly connected by the determination unit 22 exists in the wire harness 1 to be inspected, the error information including the information of the connector 13 determined to be improperly connected. 416 is displayed on the display device 4 together with the wire harness image information 411 schematically showing the wire harness 1 to be inspected.

  For example, as illustrated 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 includes, for example, image information 413 schematically showing the connector 13 of the wire harness 1 to be inspected, and an image schematically showing a bundle (trunk line) of the electric wires 12 connecting the connectors 13. Information 412.

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

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

  The display control unit 23 causes the error information to be displayed so as to overlap the wire harness image information 411. For example, as shown in FIG. 5, the display control unit 23 sets a wire surrounding the image information 413 of the connector 13 determined to be improperly connected and the connector number of the connector 13 as the error connector information 415 as a wire. It is displayed near the image information 413 of the corresponding connector 13 on the harness image information 411. In addition, the display control unit 23 causes the error path image information 414 of the path between the connectors determined to be improperly connected to be displayed so as to overlap the corresponding path on the wire harness image information 411. At this time, it is preferable that the trunk line and the error path image information 414 in the wire harness image information 411 are displayed in different colors.

  In the display area 410 of the display device 4 in FIG. 5, for 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. Is shown.

  Further, when there is a connector 13 determined to be improperly connected by the determining unit 22, the display control unit 23 includes connector image information 421 schematically indicating the connector 13 determined to be improperly connected, and The display device 4 displays error terminal information 422 indicating the connector terminal determined to be improperly connected 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 a display area 420 on the screen 41 of the display device 4. The connector image information 421 includes, for example, image information indicating a terminal room of the connector 13 and identification information (circuit symbol) of a connector terminal corresponding to each terminal room.

  Further, the display control unit 23 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 figure as error terminal information 422 is displayed in a terminal room corresponding to a connector terminal determined to be improperly connected in the connector 13 indicated by the connector image information 421. I do. Thereby, it is possible to notify the operator which connector terminal of the connector 13 is in an inappropriate connection state.

  As shown in FIG. 5, when there are a plurality of connector terminals determined to be improperly connected, the identification information of those connector terminals may be displayed by tabs. For example, in FIG. 5, a tab 423_1 on which information on the connector 13 with the connector number 8 is displayed and a tab 423_2 on which information on the connector 13 with the connector number 20 is displayed above the display area 420. It is shown. By selecting one of these tabs, connector image information 421 and error terminal information 422 relating to the connector having the connector number corresponding to the selected tab are displayed in display area 420. FIG. 5 shows, as an example, 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 with 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 of a circuit including a connector terminal whose connection of the connector 13 is determined to be inappropriate. 4 is displayed.

  Here, the circuit refers to a circuit in which the connector terminals of each connector 13 are appropriately connected to each other by the electric wire 12.

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

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

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

FIG. 6 is a flowchart showing a 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 inspection target wiring harness 1 on the work board 31 is connected to a corresponding connector jig 35 on the work board 31 (step S1). For example, an operator in charge of the processing step removes the wire harness 1 after the processing step from the catch jig 34, and connects each connector 13 of the wire harness 1 to a corresponding connector jig 35, respectively.

  Next, the inspection device 2 reads the identification information of the wire harness 1 to be inspected (Step S2). The identification information of the wire harness 1 is stored, for example, as a two-dimensional code such as a bar code or a QR code (registered trademark), and the two-dimensional code is affixed to an exterior part or the like of the wire harness 1 or the work board 31. ing. For example, the worker scans the two-dimensional code attached to the wire harness 1 or the like using a 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 a continuity inspection program corresponding to the wire harness 1 to be inspected based on the identification information read in step S2 (step S3). For example, an auxiliary storage device such as an HDD inside the inspection device 2 stores various wire harness continuity inspection programs. 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 the program into a main storage device such as a RAM.

  Next, as shown in FIG. 1, the input / output unit (connection fitting part) 24 of the inspection device 2 is connected to the collective terminal block 36 of the work panel 31 (step S4). For example, the connector pins 241 of the connection fitting portion 24 are fitted to the connectors of the collective terminal block 36. The connection between the input / output unit 24 and the collective terminal block 36 may be automatically performed by a robot. For example, a fitting machine is provided and placed on a conveyor for transporting the work board 31, and when the work board 31 arrives at a station for conducting continuity inspection, the fitting machine operates to move the connection fitting portion 24 to the collective terminal block 36. May be connected.

  Next, the inspection device 2 starts a 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 fitting portion (input / output unit) 24 and the collective terminal block 36 are electrically connected, the inspection device 2 conducts according to the conduction inspection program read in step S3. Perform inspection. Specifically, the continuity test execution unit 21 inspects the continuity between the connectors 13 of the wire harness 1 to be inspected by the above-described method, and the determination unit 22 executes the continuity test execution unit by the above-described method. Whether the connection between the connectors 13 is appropriate or not is determined based on the inspection result by the connector 21.

  The inspection device 2 determines whether or not the improperly connected connector 13 has been found by the continuity test in step S5 (step S6).

  When the connector 13 with 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 wire harness 1 to be inspected (step S7). Specifically, as illustrated in FIG. 5, the display control unit 23 includes, in addition to the wire harness image information 411, error path image information 414, error connector information 415, connector image information 421, error terminal information 422, and The display device 4 displays various kinds of information on the improperly connected connector, such as circuit information 433.

On the other hand, when the connector 13 with improper connection is not found in step S7, the inspection device 2 displays information indicating that the connector 13 with improper connection was not found on the wire harness 1 to be inspected on the display device. 4 is displayed (step S8).
By the above procedure, the continuity test is performed by the test device 2.

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

  According to this, the worker in charge of the continuity inspection can easily recognize which connector 13 is inappropriately connected in the wire harness 1 to be inspected. This makes it easy to specify a defective portion, and it is possible to reduce the time required for an analysis operation for specifying the defective portion as compared with the related art.

  When displaying the error information 416 related to the continuity test on the display device 4, the inspection device 2 displays the error information 416 on the wire harness image information 411. For example, as shown in FIG. 5, error path image information 414 indicating a path between connectors determined to be improperly connected is displayed so as to be superimposed on wire harness image information 411 (image information 412 of electric wire 12).

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

In addition, when there is a connector 13 determined to be improperly connected, the inspection apparatus 2 includes connector image information 421 schematically showing the connector 13 determined to be improperly connected, and the connection of the connector is determined to be improper. The display device 4 displays 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 grasp which connector terminal is in an inappropriate connection state in the connector 13 for which the error has been pointed out.

  Further, when there is a connector 13 determined to be improperly connected, the inspection device 2 causes the display device 4 to display information 433 of a circuit including the connector terminal 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 circuit information 433, more information related to the connector 13 determined to be improperly connected to the operator is provided to the operator. Since information can be provided, it is easier to specify 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 illustrating a functional block configuration of an inspection device 2A according to the second embodiment.

  The inspection apparatus 2A according to the second embodiment is different from the inspection apparatus 2 according to the first embodiment in that the inspection apparatus 2A performs a self-check process for determining whether the inspection apparatus 2A can operate normally. Is the same as the inspection device 2 according to the first embodiment.

  In the inspection device 2 of the wire harness inspection system 100A, the self-check unit 26 performs a self-check process at a predetermined timing to determine whether the inspection device 2A can operate normally. The self-check process is a process for performing a continuity test of the test wire harness 1X prepared separately from the wire harness 1 to be tested, and confirming whether or not the determination result of the test device 2A based on the test 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 the timing before the continuity test of the first wire harness 1 is performed after the activation of the inspection device 2A. The timing includes a timing at which a signal instructing execution of the self-check process is input by an operation of the inspection device 2A by an operator, a timing specified by an internal timer of the inspection device 2A, and the like.

  In the self-check process, first, the self-check unit 26 connects the test wire harness 1X 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 panel 31, and is electrically connectable 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 performs a self-check process according to the following procedure.
First, the self-checking unit 26 switches the switch to establish a connection between the collective terminal block 36 and the test wire harness 1X. Thereafter, the self-check unit 26 causes the continuity test execution unit 21 to perform a 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 of the test wire harness is appropriate based on the inspection result of the continuity inspection of the test wire harness performed by the continuity inspection execution unit 21. . For example, the determination unit 22 determines whether the continuity test execution unit 21 has the master information indicating the correct continuity between the connectors (connector terminals) between the connectors of the test wire harness 1X, which is stored in advance in a storage device in the inspection device 2. It is determined whether or not the connection state of each connector 13 is appropriate by comparing the actual test result of the conduction state between the connectors of the 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, master information that specifies that a predetermined connector terminal A of the test wire harness 1X is in a conductive state is a correct connection state, and a test wire harness 1X that intentionally opens the connector terminal A. Let us consider a case in which a continuity test is performed using these components.

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 a conductive state and the connection is appropriate”, a self-check is performed. The unit 26 determines that the inspection device 2A is not operating normally.

  Thereafter, the self-check unit 26 causes the display control unit 23 to display the result of the self-check process on the display device 4. Thereby, the worker can confirm that the inspection device 2A is operating normally.

  As described above, the inspection apparatus 2A according to the second embodiment automatically performs a self-check to determine whether the inspection apparatus 2A can perform a normal determination based on the continuity test. It is possible to prevent the wire harness from being shipped, and to further improve the work efficiency in the wire harness continuity inspection.

<< Extension of Embodiment >>
As described above, the invention made by the present inventors has been specifically described based on the embodiments. However, it is needless to say that the present invention is not limited thereto, and various changes can be made without departing from the gist of the invention. No.

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

  DESCRIPTION OF SYMBOLS 1 ... Wire harness, 1X ... Wire harness for a test, 2, 2A ... Inspection apparatus, 4 ... Display apparatus, 12 ... Wire, 13 ... Connector, 14 ... Exterior parts, 21 ... Continuity test execution part, 22 ... Determining part, 23 ... Display control part, 24 ... Input / output part (connection fitting part), 26 ... Self check part, 31 ... Work panel, 31a ... Work surface, 31b ... Back 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: image information of electric wire 13, 413: image information of connector 13, 414 ... error path image information , 415 ... error connector information, 421 ... connector image information, 422 ... error terminal information, 423_1,423_2 ... tab, 431 ... information of the wire 12, 432 ... connector identification information of the terminal, 433 ... information of the circuit.

Claims (7)

A continuity test execution unit that performs a continuity test between connection components of the wire harness to be inspected,
Based on the inspection result of the continuity test by the continuity test execution unit, a determination unit that determines whether connection between connection components of the wire harness to be inspected is appropriate,
A display control unit for displaying a determination result by the determination unit on a display device,
The display control unit, when there is a connection component determined to be improperly connected by the determination unit, includes error information including information on the connection component determined to be improperly connected to the wire harness to be inspected. An inspection device that causes the display device to display together with wire harness image information schematically showing The inspection device according to claim 1,
The inspection device, wherein the display control unit displays the error information so as to be superimposed on the wire harness image information. The inspection device according to claim 2,
The inspection apparatus, wherein the display control unit displays, as the error information, image information that schematically shows a path between connection parts determined to be inappropriately connected to the wire harness image information. . In the inspection device according to any one of claims 1 to 3,
When there is a connection component determined to be inappropriately connected by the determination unit, the display control unit includes connection component image information schematically showing the connection component determined to be inappropriately connected, and the connection component. A connection component terminal information indicating a terminal of a connection component determined to be inappropriate in connection, on the display device. The inspection device according to claim 4,
The inspection device, wherein the display control unit displays the connection component terminal information so as to overlap the connection component image information. In the inspection device according to any one of claims 1 to 5,
The display control unit, when there is a connection component determined to be improperly connected by the determination unit, displays the information of a circuit including a terminal of the connection component determined to be improperly connected to the connection component. An inspection device characterized by being displayed on the device. In 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 test 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 the determination unit performs the continuity test. Based on the inspection result of the continuity test of the wire harness for test inspection by the continuity inspection execution unit, determine whether the connection between the connection components of the wire harness for test inspection is appropriate,
The inspection device according to claim 1, wherein the self-checking unit determines whether the inspection device can operate normally based on a determination result of the test inspection wire harness by the determination unit.

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