JP2020186955A - Continuity inspection method of wire harness and continuity inspection device of wire harness - Google Patents

Abstract

To cause each continuity inspection jig to perform an opening behavior simultaneously at the end of an inspection without being restricted by selection of the number and direction of the continuity inspection jigs while requiring less time and effort for maintenance.SOLUTION: An air cylinder for opening is incorporated in each continuity inspection jig 10. By supplying drive air to the air cylinder via an air supply pipe 101 at the end of an inspection, an opening behavior of a plurality of continuity inspection jigs is performed simultaneously.SELECTED DRAWING: Figure 2

Description

The present invention relates to a wire harness continuity inspection method and a wire harness continuity inspection device mounted on a vehicle.

When manufacturing wire harnesses to be mounted on vehicles, at the final stage of the assembly process, check on the inspection table for continuity inspection to make sure that all the wires that make up the wire harness are electrically connected between the connectors. There is.

The continuity inspection device used for the continuity inspection of such a wire harness is a plurality of continuity inspection cures on an inspection table on which the wire harness to be inspected for continuity is placed so as to correspond to a plurality of connectors attached to the wire harness. Equipped with tools.

Each continuity inspection jig installed on the inspection table has a connector support that detachably supports the connector attached to the wire harness, a slide-type inspection block that moves forward and backward with respect to the connector support, and an inspection block. The detection block mounted on the connector is electrically connected to the terminal fitting of the connector supported by the connector support by advancing the inspection block with respect to the connector support, and the inspection block is attached to the connector support. It includes a detection unit provided with a detection terminal that is disconnected by retracting, and an operating member that advances or retracts the inspection block with respect to the connector support portion.

A normal continuity check is performed as follows.
First, place the wire harness on the inspection table. Since the wire harness is generally equipped with clamps for fixing to the vehicle at a plurality of places on the way, these clamps are fitted to the clamp receiving jigs on the inspection table. Further, the connector attached to the wire harness is fitted into the connector support portion of each continuity inspection jig.

In this state, the operation member is operated to advance the inspection block, whereby the detection part of the inspection block is fitted to the connector supported by the connector support part, and the detection terminal of the detection part is attached to the terminal fitting of the connector. Connect electrically. Then, the continuity inspection is carried out in that state. For example, if a current flows from one continuity inspection jig to the other continuity inspection jig, it is determined to be OK.

When all the inspections are completed, the inspection block of the continuity inspection jig is retracted by operating the operating member, and the detection unit and the connector are disengaged (opened). In addition, the connector that has been inspected is taken out from the connector support portion, and the clamp of the wire harness is taken out from the clamp receiving jig.

In the past, all of these operations after the inspection was completed were manually performed individually by the operator. However, since the worker has to work as many as the number of connectors and clamps, the work efficiency is very poor.

Therefore, Patent Document 1 discloses a continuity inspection device capable of collectively performing the work of operating the operating member to retract the inspection block. This continuity inspection device is designed to drive the operating members of each continuity inspection jig to the open side all at once by pulling a wire with an air cylinder.

Japanese Unexamined Patent Publication No. 5-26939

By the way, when the force of the air cylinder is transmitted to the operating member by a wire to drive the operating member to the open side, the number of applicable continuity inspection jigs and the direction of equipment are limited due to the routing of the wire. For example, a plurality of continuity inspection jigs must be set so that they are oriented in the same direction.

However, when inspecting the continuity of a wire harness, there is a demand that the wire harness be inspected in the same shape as when it is laid out in an actual vehicle. This is, for example, to prevent an excessive force from being applied to the wire harness or the connector. For the above-mentioned reasons, the connectors attached to each end of the wire harness usually face different directions, so that the device described in Patent Document 1 is widely used for inspection of all wire harnesses. It can be said that it is not applicable. Further, when the operation of the air cylinder is transmitted to the operating member via the wire, there is also a problem that maintenance work is required, such as the need for periodic adjustment of the tension of the wire and replacement of parts.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide freedom in selecting the number and orientation of continuity inspection jigs mounted on the inspection table without being limited. Provided are a wire harness continuity inspection method and a wire harness continuity inspection device that can make each continuity inspection jig perform an opening operation all at once at the end of inspection without much maintenance work while ensuring sufficient. There is.

In order to achieve the above-mentioned object, the wire harness continuity inspection method and the wire harness continuity inspection device according to the present invention are characterized by the following (1) to (4).
(1) Multiple continuity inspection jigs are installed on the inspection table to correspond to each of the multiple connectors attached to the wire harness.
For each continuity inspection jig,
A connector support portion that detachably supports the corresponding connector and
An inspection block that moves forward and backward with respect to the connector support
Mounted on the inspection block, the inspection block is electrically connected to the terminal fitting of the connector supported by the connector support portion by advancing with respect to the connector support portion, and the inspection block is attached to the connector support portion. On the other hand, a detection unit having a detection terminal that disconnects the connection by retreating.
An operating member that moves the inspection block forward and backward with respect to the connector support portion, and
An inspection block retracting air cylinder that operates by supplying drive air to displace the operating member in a direction that retracts the inspection block.
It is a continuity inspection method of a wire harness using a continuity inspection device provided with.
A step of placing a wire harness on the inspection table and supporting a plurality of connectors attached to the wire harness to the connector support portion of the corresponding continuity inspection jig.
A step of advancing the inspection block with respect to the connector support portion by operating the operation member, and electrically connecting the detection terminal of the detection unit mounted on the inspection block to the terminal fitting of the connector.
The process of energizing the detection terminal of the detection unit and inspecting the continuity of the wire harness,
A step of supplying drive air to a plurality of inspection block retreating air cylinders of the continuity inspection jig at least for each group, and retreating and separating the inspection blocks of the plurality of continuity inspection jigs from the connector support portion all at once. When,
A method for inspecting the continuity of a wire harness, which comprises.

(2) Each of the continuity inspection jigs is provided with a connector take-out mechanism for taking out the connector supported by the connector support portion from the connector support portion.
The connector extraction mechanism is provided with an air cylinder for extruding a connector that extrudes a connector supported by the connector support portion.
Drive air is supplied to the connector pushing air cylinders of the connector taking-out mechanism to push out the connectors at a timing delayed from the process of retracting and separating the inspection blocks of the plurality of continuity inspection jigs from the connector support portions all at once. To execute the operation,
The method for inspecting the continuity of a wire harness according to the above (1).

(3) A plurality of clamp receiving jigs for holding a plurality of clamps for fixing the wire harness provided on the wire harness are provided on the inspection table.
The clamp receiving jig is provided with an air cylinder for pushing out a clamp that pushes out the clamp held by the clamp receiving jig from the clamp receiving jig.
When executing the step of simultaneously retracting and separating the inspection blocks of the plurality of continuity inspection jigs from the connector support portion, drive air is supplied to the clamp pushing air cylinder to execute the clamp pushing operation.
The method for inspecting the continuity of a wire harness according to the above (1) or (2).

(4) An inspection table on which a wire harness to be inspected for continuity is placed, and
A plurality of continuity inspection jigs required for continuity inspection of the wire harness mounted on the inspection table, and
An air cylinder for operation that is installed in each of the continuity inspection jigs and causes each continuity inspection jig to perform an operation for completing the inspection at the end of the inspection.
By simultaneously supplying drive air from one drive air supply source to the operation air cylinders of all of the plurality of continuity inspection jigs or a plurality of continuity inspection jigs for each group, the plurality of continuity inspection jigs are cured. An air supply device that makes the jig perform the same operation,
A control device that controls the operation of the continuity inspection jig and the air supply device, and
The continuity inspection jig is equipped with
A connector support that detachably supports the connector attached to the wire harness,
An inspection block that moves forward and backward with respect to the connector support
Mounted on the inspection block, the inspection block is electrically connected to the terminal fitting of the connector supported by the connector support portion by advancing with respect to the connector support portion, and the inspection block is attached to the connector support portion. On the other hand, a detection unit having a detection terminal that disconnects the connection by retreating.
An operating member that moves the inspection block forward and backward with respect to the connector support portion, and
An inspection block retracting air cylinder that operates by supplying drive air to displace the operating member in a direction that retracts the inspection block.
A connector pushing air cylinder that operates by supplying drive air and pushes out the connector supported by the connector support.
Have,
The control device is
With the detection terminal of the detection unit electrically connected to the terminal fitting of the connector, the detection terminal of the detection unit is energized to determine whether or not the continuity of the wire harness is normal.
In response to the input signal, the air supply device is controlled to supply drive air to the inspection block retracting air cylinder, and the inspection blocks of the plurality of continuity inspection jigs are retracted all at once from the connector support portion. A function to supply drive air to the connector pushing air cylinder and execute a connector pushing operation.
A wire harness continuity inspection device characterized by having.

According to the wire harness continuity inspection method having the configuration of (1) above, each continuity inspection jig incorporates an air cylinder that drives the operating member to the open side. Therefore, by connecting the air supply pipe from the drive air supply source to the air cylinder of each continuity inspection jig, the necessary driving force can be applied to the air cylinder, and each continuity inspection can be performed without troublesome manual work. The jigs can be operated all at once on the open side. In addition, unlike the troublesome wire that is routed around the air supply pipe, the route can be freely selected, so the driving force can be applied to the air cylinder without being restricted by the number of each continuity inspection jig or the installation direction. Can be effectively communicated to. Moreover, unlike wires, there is almost no need to adjust the tension or replace parts, which facilitates maintenance.

According to the continuity inspection method of the wire harness having the configuration of (2) above, an air cylinder for taking out the connector is incorporated in each continuity inspection jig. Therefore, the drive air is simply supplied from the drive air supply source to the air cylinder for taking out the connector of each continuity inspection jig via the air supply pipe, and the connectors are simultaneously connected from the connector support portion without any troublesome manual work. Can be taken out. At this time, since the connector is taken out at a timing delayed with respect to the opening operation of the continuity inspection jig, the connector can be taken out smoothly.

According to the wire harness continuity inspection method having the configuration of (3) above, an air cylinder for taking out the clamp is incorporated in each clamp receiving jig. Therefore, by simply supplying the drive air from the drive air supply source to the air cylinder for taking out the clamp of each continuity inspection jig via the air supply pipe, all at once from the clamp receiving jig without performing troublesome manual work. The clamp can be taken out.

According to the wire harness continuity inspection device having the configuration of (4) above, a continuity inspection device in which an air cylinder for driving the operating member to the open side is incorporated in each continuity inspection jig is used. Therefore, by connecting the air supply pipe from the drive air supply source to the air cylinder of each continuity inspection jig, the necessary driving force can be applied to the air cylinder, and each continuity inspection can be performed without troublesome manual work. The jigs can be operated all at once on the open side. In addition, unlike the troublesome wire that is routed around the air supply pipe, the route can be freely selected, so the driving force can be applied to the air cylinder without being restricted by the number of each continuity inspection jig or the installation direction. Can be effectively communicated to. Moreover, unlike wires, there is almost no need to adjust the tension or replace parts, which facilitates maintenance. In addition, a continuity inspection device in which an air cylinder for taking out a connector is incorporated in each continuity inspection jig is used. Therefore, the drive air is simply supplied from the drive air supply source to the air cylinder for taking out the connector of each continuity inspection jig via the air supply pipe, and the connectors are simultaneously connected from the connector support portion without any troublesome manual work. Can be taken out. At this time, since the connector is taken out at a timing delayed with respect to the opening operation of the continuity inspection jig, the connector can be taken out smoothly. In addition, the control device performs a continuity inspection and automatically takes out the connector according to the operation instruction, so that the entire working time can be significantly shortened.

According to the present invention, there are no restrictions on the selection of the number and orientation of continuity inspection jigs to be mounted on the inspection table, and while sufficiently ensuring the degree of freedom in their selection, maintenance is hardly required. At the end of the inspection, each continuity inspection jig can be made to perform the opening operation all at once.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments for carrying out the invention described below (hereinafter, referred to as "embodiments") with reference to the accompanying drawings. ..

FIG. 1A is a plan view seen from diagonally above showing an overall schematic configuration of a wire harness continuity inspection device according to an embodiment of the present invention, and FIG. 1B is a diagram showing an example of a wire harness to be inspected. Is. FIG. 2 is a side view showing an overall schematic configuration of a wire harness continuity inspection device according to an embodiment of the present invention. FIG. 3 is a diagram showing a state during inspection (during closed operation) for explaining the configuration and operation of a continuity inspection jig mounted on the inspection table of the continuity inspection device, and FIG. 3A is a perspective view. 3 (b) is a cross-sectional view taken along the line AA of FIG. 3 (a), and FIG. 3 (c) is a cross-sectional view taken along the line BB of FIG. 3 (a). FIG. 4 is a diagram showing a state at the end of inspection (during open operation) for explaining the configuration and operation of a continuity inspection jig mounted on the inspection table of the continuity inspection device, and FIG. 4A is a perspective view. 4 (b) is a cross-sectional view taken along the line CC of FIG. 4 (a), and FIG. 4 (c) is a cross-sectional view taken along the line DD of FIG. 4 (a). 5A and 5B are explanatory views of the forward / backward mechanism of the inspection block of the continuity inspection jig, FIG. 5A is a side view showing a state at the time of inspection, and FIG. 5B is a side view showing a state at the end of inspection. Is. 6A and 6B are views showing a state at the time of inspection in which the operation lever is tilted forward for explaining the operation lever opening operation mechanism of the continuity inspection jig. FIG. 6A is a perspective view and FIG. 6B is a perspective view. 6 (a) is a cross-sectional view taken along the line EE, and FIG. 6 (c) is a cross-sectional view taken along the line EF of FIG. 6 (a). FIG. 7 is a view showing a state when the operation lever is about to be tilted to the rear side for explaining the opening operation mechanism of the operation lever of the continuity inspection jig, and FIG. 7A is a perspective view and FIG. (B) is a cross-sectional view taken along the line GG of FIG. 7 (a), and FIG. 7 (c) is a cross-sectional view taken along the line HG of FIG. 7 (a). FIG. 8 is a diagram showing a state when the operating lever is pushed back by the urging force Fx of the compression coil spring and completely tilted to the rear side for explaining the opening operation mechanism of the operating lever of the continuity inspection jig. 8 (a) is a perspective view, FIG. 8 (b) is a cross-sectional view taken along the line II of FIG. 8 (a), and FIG. 8 (c) is a cross-sectional view taken along the line JJ of FIG. 8 (a). 9A and 9B are explanatory views of a connector extraction mechanism in a continuity inspection jig, FIG. 9A is a perspective view, and FIG. 9B shows a state during a continuity inspection (when the air cylinder is not operating). KK arrow cross-sectional view, FIG. 9 (c) is an LL arrow cross-sectional view, and FIG. 9 (d) shows a state at the end of the continuity inspection (when the air cylinder is operated). KK arrow cross-sectional view, FIG. 9 (e) is an LL arrow cross-sectional view. 10A and 10B are views showing the configuration of a first example of a clamp receiving jig mounted on an inspection table of a continuity inspection device, FIG. 10A is a perspective view, and FIG. 10B is a continuity inspection (air). FIG. 10 (a) is a cross-sectional view taken along the line MM showing the state (when the cylinder is not operating), and FIG. 10 (c) shows the state at the end of the continuity inspection (when the air cylinder is operating). -M is a cross-sectional view taken along the arrow. 11A and 11B are views showing the configuration of a second example of a clamp receiving jig mounted on an inspection table of a continuity inspection device, FIG. 11A is a perspective view, and FIG. 11B is a continuity inspection (air). The cross-sectional view taken along the line N—N in FIG. 11A showing the state when the cylinder is not operating, and FIG. 11C is the N in FIG. 11A showing the state when the continuity inspection is completed (when the air cylinder is operating). −N is a cross-sectional view taken along the arrow. 12A and 12B are views showing the configuration of a third example of a clamp receiving jig mounted on an inspection table of a continuity inspection device, FIG. 12A is a perspective view, and FIG. 12B is a continuity inspection (air). FIG. 12 (a) shows a cross-sectional view taken along the line O-O showing the state when the cylinder is not operating, and FIG. 12 (c) shows the state at the end of the continuity inspection (when the air cylinder is operating). -O arrow cross-sectional view. FIG. 13 is a block diagram showing a control device of the continuity inspection device and a device connected to the control device. FIG. 14 is a flowchart showing a flow of processing executed by the control device.

Specific embodiments of the present invention will be described below with reference to the respective figures.

FIG. 1A is a plan view seen from diagonally above showing an overall schematic configuration of a wire harness continuity inspection device according to an embodiment of the present invention, and FIG. 1B is a diagram showing an example of a wire harness to be inspected. , FIG. 2 is a side view showing an overall schematic configuration of the continuity inspection device of the embodiment.

<Overall schematic configuration of continuity inspection device M>
As shown in FIGS. 1A and 2, the continuity inspection device M includes an inspection table 1 having an inclined table surface on which a wire harness W to be inspected for continuity is placed. A plurality of jigs (continuity inspection jig 10 and clamp receiving jig 80) necessary for continuity inspection of the wire harness are arranged and fixed on the table surface of the inspection table 1. Each jig is provided with an operating air cylinder (described later) that causes each jig to perform an operation for completing the inspection at the end of the inspection. The continuity inspection device M includes an air supply device 2 that causes a plurality of jigs of the same type to perform the same operation by simultaneously supplying drive air to each of these air cylinders at the end of the inspection. Further, the continuity inspection device M includes a control device (not shown). The air supply device 2 includes a compressor 100 (drive air supply source), an air supply pipe 101, an electromagnetic on-off valve 102, a speed control valve 105 (described later), and the like.

An air supply pipe 101 is connected to the discharge port of the compressor 100, which is a common drive air supply source, and one electromagnetic opening / closing valve 102 is interposed at the base of the air supply pipe 101. The air supply pipe 101 is branched by the number of supply destinations on the front side of the electromagnetic on-off valve 102, and the tip of each branched air supply pipe 101 is connected to the air cylinder which is the supply destination. At that time, as will be described later, a speed control valve 105 is interposed in the middle of a group of air supply pipes (air supply pipes connected to the air cylinders 62 of the connector take-out mechanism 60 to be described later). These configurations are also shown in FIG.

As shown in FIG. 1 (b), the wire harness W has a general configuration in which a connector C is attached to an end of an electric wire and a clamp K for fixing to a vehicle is attached at a necessary place. There is. A plurality of connectors C and clamps K are provided in one wire harness W. As shown in FIG. 1A, the positions and orientations of the connectors C and clamps K of the wire harness W mounted on the inspection table 1 in a form similar to that mounted on the vehicle are arranged on the inspection table 1. A plurality of continuity inspection jigs 10 and a plurality of clamp receiving jigs 80 are arranged and fixed to each other.

<Continuity inspection jig 10>
3 and 4 are diagrams for explaining the configuration and operation of each continuity inspection jig 10. 3A and 3B are views showing a state at the time of inspection (closed operation), FIG. 3A is a perspective view, FIG. 3B is a cross-sectional view taken along the line AA of FIG. 3A, and FIG. c) is a cross-sectional view taken along the line BB of FIG. 3 (a). Further, FIG. 4 is a diagram showing a state at the end of the inspection (during the opening operation), FIG. 4A is a perspective view, FIG. 4B is a sectional view taken along the line CC of FIG. 4A. FIG. 4 (c) is a cross-sectional view taken along the line DD of FIG. 4 (a). Further, FIG. 5 is an explanatory view of a forward / backward mechanism (toggle mechanism) of the inspection block provided in the continuity inspection jig, FIG. 5 (a) is a side view showing a state at the time of inspection, and FIG. 5 (b) is an inspection completion. It is a side view which shows the state of time.

As shown in FIGS. 3 and 4, the continuity inspection jig 10 moves forward and backward with respect to the connector support portion 21 that detachably supports the connector C of the wire harness W to be inspected for continuity and the connector support portion 21. It has a slide-type inspection block 25 and an operation lever (operation member) 30 for moving the inspection block 25 forward and backward with respect to the connector support portion 21. The direction of arrow S1 in FIG. 3 is the forward direction, and the direction of arrow S2 in FIG. 4 is the backward direction.

FIG. 3 shows a state in which the operation lever 30 is tilted forward as shown by the arrow R1 to advance the inspection block 25 with respect to the connector support portion 21. Further, FIG. 4 shows a state in which the operation lever 30 is returned to the rear as shown by the arrow R2 and the inspection block 25 is retracted with respect to the connector support portion 21.

As shown in FIGS. 3 and 4, the continuity inspection jig 10 includes a continuity inspection mechanism 20 including a connector support portion 21, an inspection block 25, an operation lever 30 thereof, and the like, and an operation provided behind the continuity inspection mechanism 20. It includes a lever opening mechanism 50 and a connector taking-out mechanism 60 for taking out the connector C after inspection from the connector support portion 21.

<Continuity inspection mechanism 20>
The continuity inspection mechanism 20 has a base frame 11 supported at a constant height on an inspection table 1 (see FIGS. 1 and 2) via legs 8. The base frame 11 includes a strip-shaped bottom plate 11a, both side plates 11b rising from the left and right side edges of the bottom plate 11a, and a front plate 11d formed in a U shape so as not to interfere with the insertion of the connector C. doing. A pair of left and right operating lever support walls 11c are provided on the upper edge of the rear end of the left right plate 11b. The lower end of the operating lever 30 is supported by the operating lever support walls 11c so as to be rotatable in the front-rear direction by the first pin 31.

The connector support portion 21 is fixedly arranged inside the front plate 11d of the base frame 11. The connector support portion 21 has a connector accommodating recess 21a capable of stably receiving the connector C when the connector C is inserted from above. The connector accommodating recess 21a is formed slightly larger than the connector C.

<Slide structure of inspection block 25>
As shown in FIG. 5, the inspection block 25 is slidably arranged in the front-rear direction on the rear side of the connector support portion 21. Further, a rear end stopper 22 is fixedly arranged on the rear side of the inspection block 25. Between the connector support portion 21 located on the front side of the inspection block 25 and the rear end stopper 22 located on the rear side of the inspection block 25, the front end is fixed to the connector support portion 21, and the rear end is the rear end stopper 22. A pair of guide rods 28 fixed to the vehicle are arranged side by side and parallel to each other.

The pair of guide rods 28 are slidably penetrated into a pair of slide holes 28b provided in the lower half of the inspection block 25, and the inspection block 25 is guided by these guide rods 28. It is designed to slide back and forth. Further, a compression coil spring 28c is loaded on the outer circumference of each guide rod 28. The rear end of the compression coil spring 28c is abutted against the front end surface around the slide hole 28b of the inspection block 25, whereby the inspection block 25 is urged rearward by the spring force of the compression coil spring 28c. ..

The front end of the guide rod 28 is fixed to the inner inner end (front end wall) of the counterbore hole 28a provided in the lower half of the connector support portion 21. Further, the front end of the compression coil spring 28c loaded on the outer circumference of the guide rod 28 is abutted against the inner inner end of the counterbore hole 28a. As a result, the urging force of the compression coil spring 28c acts as a force that pushes the inspection block 25 backward by receiving the front side at the inner inner end of the counterbore hole 28a. Then, when the inspection block 25 moves to the frontmost position while contracting the compression coil spring 28c, the compression coil spring 28c is housed inside the counterbore hole 28a.

<Detection unit 27>
As shown in FIG. 4A, the front end surface of the inspection block 25 is the front portion of the connector C (the front portion in the fitting direction of the connector C during normal use, and the rear end side of the connector support portion 21. A fitting port 26 for fitting the (positioned portion) is provided, and a detection unit 27 is provided inside the fitting port 26. The detection unit 27 is provided with a detection terminal (not shown) that is electrically connected to the terminal fitting of the connector C. The detection terminal is connected to a conductive power supply (not shown), and when the inspection block 25 advances with respect to the connector support portion 21, it is electrically connected to the terminal fitting of the connector C supported by the connector support portion 21. .. Further, when the inspection block 25 retracts with respect to the connector support portion 21, the connection of the connector C to the terminal fitting is released.

<engaging convex portion 25a>
An engaging convex portion 25a projecting forward is provided at the upper front end of the inspection block 25. The engaging convex portion 25a includes the rear end of the connector support portion 21 and the rear end of the connector support portion 21 when the inspection block 25 advances with respect to the connector support portion 21 and the front portion of the connector C is fitted into the fitting port 26 of the inspection block 25. The connector C is engaged so as to cover the front half of the connector C supported by the connector support portion 21 to prevent the connector C from being inadvertently pulled out from the connector support portion 21.

<Operating lever 30 and its peripheral mechanism>
Next, the operation lever 30 and the mechanism around it will be described.
As shown in FIGS. 3 to 5, the lower end of the operation lever 30 is attached to the pair of left and right operation lever support walls 11c of the base frame 11 by the first pin 31 as described above, and the first pin 31 It is supported so as to be rotatable in the front-rear direction with the fulcrum as a fulcrum. At the lower end of the operating lever 30, a second pin 32 is arranged on the front side of the first pin 31, and the second pin 32 causes one end (rear end) of the push-pull arm 33 to rotate to the lower end of the operating lever 30. It is movably connected.

Further, the other end (front end) of the push-pull arm 33 is rotatably connected to the front inspection block 25 by a third pin 34. Although the first pin 31 is fixed, the third pin 24 can slide in the front-rear direction together with the inspection block 25 at substantially the same height as the first pin 31. Therefore, when the operating lever 30 is rotated in the front-rear direction, the second pin 32 is rotationally displaced in the up-down direction about the first pin 31, and is connected to the other end of the push-pull arm 33 accordingly. The block 25 slides back and forth.

The operation lever 30, the first pin 31, the second pin 32, the third pin 34, and the push-pull arm 33 form a toggle mechanism, and the first pin 31, the second pin 32, and the third pin 34 are straight lines. The dead center is when they are lined up, and the inspection block 25 moves forward. In this state, the toggle mechanism is in a stretched state, and the direction of the reaction force (vertical direction) received by the second pin 32 from the inspection block 25 is reversed with this state as a boundary.

For example, when the second pin 32 is located above the line segment connecting the first pin 31 and the third pin 34, the force from the inspection block 25 (the urging force of the compression coil spring 28c) is applied to the second pin 32. Generates a component force (reaction force) that lifts up. Further, when the second pin 32 is located below the line connecting the first pin 31 and the third pin 34, the force from the inspection block 25 (the urging force of the compression coil spring 28c) is lower than the second pin 32. Generates a component force (reaction force) that pushes down.

That is, when the operating lever 30 is tilted from the rear to the front as shown by the arrow R1, the second pin 32 rotates downward about the first pin 31 due to the movement, and the second pin 32 rotates downward. As a result, the inspection block 25 advances against the urging force of the compression coil spring 28c. Then, the inspection block 25 and the connector C are fitted at the maximum forward position (position of the dead center) where the first pin 31, the second pin 32, and the third pin 34 are aligned in a straight line. Further, when the second pin 32 is slightly beyond the position and is slightly below the line segment connecting the first pin 31 and the third pin 34 (when the movement further downward is restricted). ), The component force due to the force from the inspection block 25 (the urging force of the compression coil spring 28c) acts downward on the second pin 32, and self-locking is applied.

That is, after passing the dead center, the operation lever 30 does not return in the direction opposite to the operation direction (arrow R1 direction) (arrow R2 direction) due to the self-locking action of the toggle mechanism, and the inspection block 25 and the connector C are fitted. The match is maintained. When this fitting is maintained, the engaging convex portion 25a of the inspection block 25 is engaged so as to cover above the front portion of the connector C, thereby preventing the connector C from coming off upward.

When the inspection block 25 and the connector C are fitted, the terminal fitting of the connector C and the detection terminal of the detection unit 27 mounted on the inspection block 25 are electrically connected. Therefore, the continuity test can be performed in this state.

At the end of the inspection, as shown in FIGS. 4 and 5 (b), if the operating lever 30 is rotated backward as shown by the arrow R2, the second pin 32 is rotated upward from the self-locking position. Therefore, the inspection block 25 can be retracted by the urging force of the compression coil spring 28c. Therefore, the operating lever 30 can be vigorously returned in the direction of arrow R2. By this operation, the inspection block 25 and the connector C are disengaged.

The continuity inspection jig 10 is operated at the end of the inspection, that is, the operation lever 30 is rotated to the rear side as shown by the arrow R2 to retract the inspection block 25, and the inspection block 25 and the connector C are fitted. An operation lever opening mechanism 50 is provided so that the removal operation can be performed automatically.

<Operating lever opening mechanism 50>
Next, the operating lever opening mechanism 50 will be described.
6 to 8 are views showing an operation lever opening operation mechanism. 6A and 6B are views showing a state at the time of inspection when the operating lever is tilted forward, FIG. 6A is a perspective view, FIG. 6B is a sectional view taken along the line EE of FIG. 6 (c) is a cross-sectional view taken along the line FF of FIG. 6 (a). 7A and 7B are views showing a state in which a sliding member is moved by driving an air cylinder to tilt the operating lever rearward, FIG. 7A is a perspective view, and FIG. 7B is FIG. FIG. 7 (a) is a cross-sectional view taken along the line GG, and FIG. 7 (c) is a cross-sectional view taken along the line HG of FIG. 7 (a). 8A and 8B are views showing a state when the operating lever is pushed back by the urging force Fx of the compression coil spring and completely tilted to the rear side. FIG. 8A is a perspective view, and FIG. 8B is FIG. FIG. 8 (c) is a cross-sectional view taken along the line II of FIG. 8 (a), and FIG. 8 (c) is a cross-sectional view taken along the line JJ of FIG.

As shown in FIGS. 3 to 8, the operation lever opening mechanism 50 is arranged on the rear side of the continuity inspection jig 10, and includes a rectangular parallelepiped casing 51. On one side (right side when viewed from the front) inside the casing 51, a strip-shaped cam plate 52 having a front half protruding from the casing 51 slides in the front-rear direction in a posture in which the width direction is directed in the vertical direction. It is arranged freely. The front half of the cam plate 52 is located below the one side plate (right side plate) of the operating lever 30. The rear end of the cam plate 52 is bent in an L shape toward the center side in the width direction of the casing 51, and the bent portion is the pressing force of the inspection block retracting air cylinder 53 arranged inside the casing 51. It is a passive plate 52a that receives.

A cam convex portion 52b protruding upward is formed on the upper edge of the front end of the cam plate 52. As shown in FIGS. 6 and 7, the cam convex portion 52b corresponds to the lower end corner portion 30a in the vicinity of the second pin 32 of the operating lever 30. When the cam plate 52 slides rearward from the front position shown in FIG. 6 as shown by the arrow S3 in FIG. 7, the cam convex portion 52b hits the lower end corner portion 30a near the second pin 32 of the operating lever 30, and the first Lift pin 2 32. When the second pin 32 is lifted, the self-lock of the toggle mechanism is released, and the operating lever 30 is rotated to the rear side as shown by the arrow R2 by the urging force Fx of the compression coil spring 28c acting on the inspection block 25. Finally, as shown in FIG. 8, it is returned to the initial position by the force of the compression coil spring 28c acting on the inspection block 25.

An inspection block retracting air cylinder 53 for generating a driving force is arranged inside the casing 51 of the operating lever opening mechanism 50. The air cylinder 53 extends the rod 53d by connecting the tip of the rod 53d extending rearward from the piston 53b sliding in the main body 53a to the passive plate 52a of the cam plate 52 and introducing drive air into the operating chamber 53c. The passive plate 52a is pushed backward to move. As a result, the cam plate 52 slides rearward, so that the self-locking of the toggle mechanism is released as described above, and the operating lever 30 is returned to the rear initial position. An air supply pipe 101 is connected to the operating chamber 53c of the air cylinder 53 via a joint 54. The return of the piston 53b of the air cylinder 53 to the initial position is performed by a built-in spring or the like, if necessary.

Further, the continuity inspection jig 10 is provided with a connector take-out mechanism for automatically taking out the inspected connector C from the connector support portion 21 at the end of the inspection.

<Connector extraction mechanism 60>
Next, the connector take-out mechanism 60 will be described.
9A and 9B are explanatory views of a connector take-out mechanism, FIG. 9A is a perspective view, and FIG. 9B shows a state during a continuity inspection (when the air cylinder is not operating). Cross-sectional view taken along the arrow, FIG. 9 (c) is a cross-sectional view taken along the line LL, FIG. 9 (d) shows a state at the end of the continuity inspection (when the air cylinder is operated). A cross-sectional view, FIG. 9 (e) is a cross-sectional view taken along the line LL.

As shown in FIGS. 3 and 4, the connector take-out mechanism 60 is arranged below the base frame 11 of the continuity inspection jig 10. The housing 61 of the connector extraction mechanism 60 is placed and fixed on the table surface of the inspection table 1 shown in FIGS. 1 and 2. As shown in FIG. 9, the housing 61 is provided with an air cylinder 62 for extruding a connector. The air cylinder 62 extends the rod 63 coupled to the vertically moving piston 62b upward while the main body 62a is fixed to the housing 61. Then, the rod 63 is raised by introducing the driving air into the operating chamber 62c in the main body 62a. Therefore, the air supply pipe 101 is connected to the operating chamber 62c via the joint 54.

A push-up shaft 65 is connected to the upper end of the rod 63 via a connecting member 64. As shown in FIG. 9D, the push-up shaft 65 is provided so as to penetrate the bottom wall of the connector accommodating recess 21a of the connector support portion 21 and rise, and when the push-up shaft 65 rises, the connector support portion is provided. The connector C supported by the 21 is pushed up and can be taken out from the connector support portion 21.

By the way, if the inspection block 25 is pushed up with respect to the connector C before being retracted from the connector support portion 21, that is, before the detection unit 27 and the connector C are released from the mating, the detection terminal or the connector for continuity inspection is performed. There is a risk of damaging the terminal fittings inside C. Therefore, the operation timing of the connector pushing air cylinder 62 of the connector taking-out mechanism 60 is delayed from the operation timing of the inspection block retracting air cylinder 53.

As a method of delaying the timing, a method of delaying the timing of starting the supply of drive air (for example, a method of delaying the opening timing of the on-off valve) may be used, but in this case, the number of valves increases, so that the continuity inspection device M In the air supply device 2 of the above, a speed control valve 105 is interposed in the middle of the air supply pipe 101 that supplies drive air to the connector pushing air cylinder 62. That is, by controlling the flow rate of the drive air with the speed control valve 105, the push-up timing of the connector C by the connector pushing air cylinder 62 is delayed.

Next, the operation of the continuity inspection jig 10 will be described.
When performing a continuity inspection of the wire harness W, the wire harness W is placed on the inspection table 1 and each connector C is set on the continuity inspection jig 10. At that time, the operation lever 30 of each continuity inspection jig 10 is rotated backward in advance to retract the inspection block 25. In this state, the connector C is inserted into the connector accommodating recess 21a of the connector support portion 21 from above with the fitting surface side with respect to the mating connector facing the inspection block 25.

Next, as shown in FIGS. 3 and 5 (a) and 6, the operating lever 30 is tilted forward as shown by the arrow R1. Then, the inspection block 25 opposes the urging force of the compression coil spring 28c by the action of the toggle mechanism including the operation lever 30, the first pin 31, the second pin 32, the third pin 34, and the push-pull arm 33. The fitting port 26 (see FIG. 4A) on the front end surface of the inspection block 25 is fitted to the front portion of the connector C, and when this fitting is established, the terminal fitting of the connector C and the inspection block 25 are fitted. The detection terminal of the detection unit 27 mounted on the above is electrically connected. Further, the engaging convex portion 25a on the upper part of the front end of the inspection block 25 is engaged so as to cover the connector supporting portion 21 and the front portion of the connector C, so that the connector C does not come out upward. Continuity inspection is carried out in this state.

Then, after the continuity inspection is completed, the driving air is supplied to the inspection block retreating air cylinder 53 of the operating lever opening mechanism 50. Then, the passive plate 52a at the rear end of the cam plate 52 of the operating lever opening mechanism 50 is pushed by the rod 53d of the air cylinder 53, and the cam plate 52 slides rearward as shown by the arrow S3 in FIG.

When the cam plate 52 slides backward as shown by the arrow S3, the cam convex portion 52c on the upper edge of the front end of the cam plate 52 slides on the corner portion 30a near the second pin 32 at the lower end of the operating lever 30. Lift 2 pin 32. When the second pin 32 of the toggle mechanism is lifted above the line connecting the first pin 31 and the third pin 34, the urging force of the compression coil spring 28c is applied to the inspection block 25 in advance. As shown in FIG. 8, the second pin 32 is vigorously lifted, and the operating lever 30 rotates backward as shown by the arrow R2. As a result, as shown in FIGS. 4 and 5, the inspection block 25 is retracted, and the mating between the inspection block 25 and the connector C is released (here, this movement is referred to as opening). Then, when the inspection block 25 is retracted, the upper part of the connector support portion 21 is opened, and the connector C can be removed.

<Clamp receiving jig>
The configuration and operation of the continuity inspection jig 10 have been described above, but next, the clamp receiving jig 80 will be described.
As the clamp receiving jig 80, three types of clamp receiving jigs 80A, 80B, and 80C are prepared in this embodiment so that they can be selected according to the type of the clamp K.
10A and 10B are views showing the configuration of a first example of a clamp receiving jig, FIG. 10A is a perspective view, and FIG. 10B is a state showing a state during a continuity inspection (when the air cylinder is not operating). FIG. 10 (c) is a cross-sectional view taken along the line MM in FIG. 10 (a), and FIG. 10 (c) is a cross-sectional view taken along the line MM in FIG. 10 (a) showing a state at the end of the continuity inspection (when the air cylinder is operated).

<First example of clamp receiving jig>
As shown in FIG. 10, the clamp receiving jig 80A is configured to fit the button-shaped portion of the clamp KA. The housing 81A of the clamp receiving jig 80A is fixed on the table surface of the inspection table 1 shown in FIGS. 1 and 2. A fitting recess 82A for fitting a button-shaped portion of the clamp KA is provided on the upper end surface of the housing 81A. A slide hole 83A penetrating downward is provided on the inner bottom surface of the fitting recess 82A. An air cylinder 84A for pushing out a clamp is provided below the slide hole 83A, and the upward piston rod 85A of the air cylinder 84A is housed in the slide hole 83A so as to be slidable in the vertical direction. Further, an air supply pipe 101 for supplying drive air is connected to the air cylinder 84A via a joint 54.

In the clamp receiving jig 80A, the piston rod 85A is lowered as shown in FIG. 10B before the drive air is supplied. In this state, the button-shaped portion of the clamp KA can be fitted and fixed in the fitting recess 82A for inspection. At the end of the inspection, the piston rod 85A is raised as shown in FIG. 10C by supplying drive air to the air cylinder 84A. Then, the clamp KA is pushed up by the rising piston rod 85A so that the clamp KA can be taken out.

<Second example of clamp receiving jig>
11A and 11B are views showing the configuration of a second example of the clamp receiving jig, FIG. 11A is a perspective view, and FIG. 11B is FIG. 11 showing a state during a continuity inspection (when the air cylinder is not operating). FIG. 11 (c) is a cross-sectional view taken along the line NN of FIG. 11 (a), and FIG. 11 (c) is a cross-sectional view taken along the line NN of FIG. 11 (a) showing a state at the end of the continuity inspection (when the air cylinder is operated).

As shown in FIG. 11, the clamp receiving jig 80B is configured to fit the Z-shaped portion of the clamp KB. The housing 81B of the clamp receiving jig 80B is fixed on the table surface of the inspection table 1 shown in FIGS. 1 and 2. A fitting recess 82B for fitting a Z-shaped portion of the clamp KB is provided on the upper end surface of the housing 81B. A slide hole 83B penetrating downward is provided on the inner bottom surface of the fitting recess 82B. An air cylinder 84B for pushing out a clamp is provided below the slide hole 83B, and the upward piston rod 85B of the air cylinder 84B is housed in the slide hole 83B so as to be slidable in the vertical direction. Further, an air supply pipe 101 for supplying drive air is connected to the air cylinder 84B via a joint 54.

Further, an presence / absence confirmation switch 88B for confirming whether or not the clamp KB is fitted in the fitting recess 82B is provided inside the fitting recess 82B of the clamp receiving jig 80B. The presence / absence confirmation switch 88B generates an ON signal when the actuator 89B is pressed and displaced by the clamp KB fitted in the fitting recess 82B. When the clamp KB is taken out from the fitting recess 82B, the actuator 89B returns to the initial position and the signal is turned off.

In the clamp receiving jig 80B, the piston rod 85B is lowered as shown in FIG. 11B before the drive air is supplied. In this state, the Z-shaped portion of the clamp KB can be fitted and fixed in the fitting recess 82B for inspection. Prior to the inspection, the signal of the presence / absence confirmation switch 88B can be confirmed, and the inspection can be started when the signals of the presence / absence confirmation switches 88B of all the clamp receiving jigs 80B are turned on.

At the end of the inspection, the piston rod 85B is raised as shown in FIG. 11C by supplying drive air to the air cylinder 84B. Then, the clamp KB is pushed up by the rising piston rod 85B so that the clamp KB can be taken out.

<Third example of clamp receiving jig>
12A and 12B are views showing the configuration of a third example of the clamp receiving jig, FIG. 12A is a perspective view, and FIG. 12B is FIG. 12 showing a state during a continuity inspection (when the air cylinder is not operating). FIG. 12 (c) is a cross-sectional view taken along the line OO of FIG. 12 (a), and FIG. 12 (c) is a cross-sectional view taken along the line OO of FIG. 12 (a) showing a state at the end of the continuity inspection (when the air cylinder is operated).

As shown in FIG. 12, the clamp receiving jig 80C is configured to fit the rod-shaped portion of the clamp KC. The housing 81C of the clamp receiving jig 80C is fixed on the table surface of the inspection table 1 shown in FIGS. 1 and 2. A fitting recess 82C for fitting a rod-shaped portion of the clamp KC is provided on the upper end surface of the housing 81C. A slide hole 83C penetrating downward is provided on the inner bottom surface of the fitting recess 82C. An air cylinder 84C for pushing out a clamp is provided below the slide hole 83C, and the upward piston rod 85C of the air cylinder 84C is housed in the slide hole 83C so as to be slidable in the vertical direction. Further, an air supply pipe 101 for supplying drive air is connected to the air cylinder 84C via a joint 54.

Further, an presence / absence confirmation switch 88C for confirming whether or not the clamp KC is fitted in the fitting recess 82C is provided inside the fitting recess 82C of the clamp receiving jig 80C. The presence / absence confirmation switch 88C generates an ON signal when the actuator 89C is pressed and displaced by the clamp KC fitted in the fitting recess 82C. When the clamp KB is taken out from the fitting recess 82C, the actuator 89C returns to the initial position and the signal is turned off.

Further, a similar clamp regulation plate 86C is erected on the inner bottom portion of the fitting recess 82C of the clamp receiving jig 80C. When the regular clamp KC is fitted into the fitting recess 82C, the similar clamp regulation plate 86C allows the regular clamp KC to be fitted by entering the relief recess KCp provided in the clamp KC. On the other hand, when a similar clamp is about to be fitted into the fitting recess 82C, the similar clamp is not provided with the relief recess KCp, so that it interferes with the similar clamp and prevents the fitting of the similar clamp. It is also possible to give the similar clamp regulation plate 86C a switch function so that the regulation plate 86C is pushed by the similar clamp to generate a warning signal.

In the clamp receiving jig 80C, the piston rod 85C is lowered as shown in FIG. 12B before the drive air is supplied. In this state, the rod-shaped portion of the clamp KC can be fitted and fixed in the fitting recess 82C for inspection. Prior to the inspection, the signal of the presence / absence confirmation switch 88CB can be confirmed, and the inspection can be started when the signals of the presence / absence confirmation switches 88C of all the clamp receiving jigs 80C are turned on.

At the end of the inspection, the piston rod 85C is raised as shown in FIG. 12C by supplying drive air to the air cylinder 84C. Then, the clamp KC is pushed up by the rising piston rod 85C so that the clamp KC can be taken out.

<Control device>
Next, the control system will be described with reference to the block diagram shown in FIG.
The control system has a control device 120 at the center. The control device 120 is composed of a CPU, ROM, RAM, an input port, an output port, and a data bus connecting each of these parts. The input port is composed of a detection unit 27 of the continuity inspection mechanism 20 and a start switch and an open switch. The input means 121 such as an operation switch is connected to the clamp presence / absence confirmation switches 88B, 88C, etc. as necessary, and the output port is energized to supply an inspection current to detect the continuity of the terminal of the connector C. The power supply 122, the display unit 123, and the electromagnetic on-off valve 102 arranged between the continuity inspection jig 10 and the compressor 100 that supplies drive air to the air cylinders of each jig such as the clamp receiving jig 80 are connected. Has been done. The display unit 123 is composed of an electric display board, and displays the continuity result of the connector C with OK or NG by the command signal of the control device 120.

Next, the continuity inspection method will be described.
The continuity inspection proceeds in the order of the following steps.

<Continuity inspection method>
(1) First, the wire harness W to be inspected for continuity is placed on the table surface of the inspection table 1, and a plurality of connectors C attached to the wire harness W are supported by the connector support portions 21 of the corresponding continuity inspection jig 10. Let me. Further, a plurality of clamps K attached to the wire harness W are fitted into the corresponding clamp receiving jigs 80.

(2) Next, by rotating the operation lever 30 of each continuity inspection jig 10 from the rear to the front, the inspection block 25 is advanced with respect to the connector support portion 21, thereby forming the terminal fitting of the connector C. The detection terminal of the detection unit 27 mounted on the inspection block 25 is electrically connected.

(3) In this state, the detection terminal of the detection unit is energized, and the detection terminal detects whether or not the wire harness W is energized to inspect the continuity of the wire harness W. This result is displayed by the display unit 123 in OK, NG, etc. and notified to the operator. Then, when all the continuity inspection results of the wire harness are passed, OK is announced.

(4) After the continuity inspection is completed, the inspection block retracting air cylinder 53 of the continuity inspection jig 10, the connector pushing air cylinder 62 of the connector taking-out mechanism 60, and the clamp pushing air cylinder 84A of the clamp receiving jig 80, Drive air is supplied to 84B and 84C. Then, the inspection blocks 25 of the plurality of continuity inspection jigs 10 are simultaneously retracted from the connector support portion 21 and separated from each other. Further, the connector C after inspection is taken out from the connector support portion 21. Further, the clamp K is taken out from the clamp receiving jig 80. This completes the continuity inspection of one wire harness W.

Next, the procedure for inspecting the continuity of the wire harness with the continuity inspection device M will be described with reference to the flowchart of FIG.
The wire harness W to be inspected for continuity is placed on the table surface of the inspection table 1, each connector C attached to the wire harness W is set on the connector support portion 21 of the corresponding continuity inspection jig 10, and the clamp K is set. , Set in the corresponding clamp receiving jig 80, rotate the operation lever 30 forward, advance the inspection block 25 to the inspection position, and in step S201, the keyboard or the like provided on the upper part of the control device 120 The number of connectors C (N = N0) is input by the input means.

Next, when the start switch is turned on in step S202, one of the plurality of connectors C is energized in step S203. Then, in step S204, it is determined whether the energization inspection is OK or NG. In the case of OK, that is, if the connector C passes, the display unit 123 displays OK in step S205, and the connector C is counted in step S206. Next, in step S207, it is determined whether or not the predetermined number N0 has been counted.

If the predetermined number N0 has not been counted, the process returns to step S203, and steps S203 to 207 are executed again. Then, when the number N counted in step S207 becomes a predetermined number N0, it is determined whether or not the release switch is turned on in step S208. When the release switch is turned on, drive air is supplied to the air cylinders 53, 62, 84 (84A, 84B, 84C) in step S209 to operate the air cylinders. As a result, in the continuity inspection jig 10, the inspection block 25 is retracted, the connector C is taken out from the connector support portion 21 at the timing of the retracting, and the clamp K is taken out from the clamp receiving jig 80. These operations are performed all at once.

If the result is NG in step S204 due to erroneous wiring or the like, the process proceeds to step S210, NG is displayed on the display unit 123, and it is determined in step S211 whether or not the repair has been completed. When the display of NG is displayed on the display unit 123, the operator takes out the connector C by operating the operation lever 30 of the corresponding continuity inspection jig 10, repairs the connector C, and then reconnects the connector C to the connector support unit 21. Return.

When the repair of the connector is completed, it is determined in step S207 whether or not the predetermined number has been counted, and if the predetermined number N0 has been counted, step S208 and subsequent steps are executed.

According to the continuity inspection method described above, the continuity inspection device M in which the air cylinder 53 for driving the operation lever 30 to the open side is incorporated in each continuity inspection jig 10 is used. Therefore, the required driving force can be applied to the air cylinder 53 simply by connecting the air supply pipe 101 from the drive air supply source (compressor 100) to the air cylinder 53 of each continuity inspection jig 10, which is troublesome manual work. The inspection block 25 of each continuity inspection jig 10 can be operated all at once on the open side without performing the above.

Further, unlike the troublesome wire for routing the air supply pipe 101, the route can be freely selected, so that the number of each continuity inspection jig 10 and the installation direction (mounting angle) are not limited. , The driving force can be effectively transmitted to the air cylinder 53, and the range of the wire harness to be applied can be expanded. Moreover, unlike wires, there is almost no need to adjust the tension or replace parts, so maintenance work can be reduced. Further, since each continuity inspection jig 10 can be operated all at once on the open side, the time required for the continuity inspection can be shortened.

Since the operating lever opening mechanism 50 can be retrofitted, it can be retrofitted to the rear side of the operating lever of the existing continuity inspection device to realize automation.

Further, when the above-mentioned continuity inspection device M is used, since each continuity inspection jig 10 is equipped with a connector take-out mechanism 60, it is only necessary to supply drive air from the drive air supply source to the connector pushing air cylinder. The connector C can be taken out from the connector support portion 21 all at once without performing troublesome manual work. At this time, since the connector C is taken out at a timing delayed with respect to the retracting (opening operation) of the inspection block 25, the connector C can be taken out smoothly.

Further, when the above-mentioned continuity inspection device M is used, since the clamp receiving jig 80 having the clamp extrusion air cylinder 84 is provided, it is a troublesome manual work only by supplying the drive air to the clamp extrusion air cylinder. The clamp K can be taken out from the clamp receiving jig 80 all at once without performing the above.

In the above description, the case where the driving air is simultaneously supplied to all the air cylinders 53, 62, 84 equipped in the continuity inspection device M and operated simultaneously has been described, but all the air cylinders are grouped and grouped. The drive air may be supplied to a plurality of air cylinders at the same time, and may be configured to operate simultaneously to a plurality of air cylinders in the same group.

Here, the features of the wire harness continuity inspection method and the wire harness continuity inspection device according to the above-described embodiment of the present invention are briefly summarized and listed below in [1] to [4], respectively.
[1] A plurality of continuity inspection jigs (10) are equipped on the inspection table (1) so as to correspond to the plurality of connectors (C) attached to the wire harness (W).
In each continuity inspection jig (10),
A connector support portion (21) that detachably supports the corresponding connector (C) and
An inspection block (25) that moves forward and backward with respect to the connector support portion (21),
With the terminal fitting of the connector (C) mounted on the inspection block (25) and supported by the connector support portion (21) by advancing the inspection block (25) with respect to the connector support portion (21). A detection unit (27) provided with a detection terminal that is electrically connected and the connection is released when the inspection block (25) retracts with respect to the connector support portion (21).
An operating member (30) that moves the inspection block (25) forward and backward with respect to the connector support portion (21).
An inspection block retracting air cylinder (53) that operates by supplying drive air to displace the operating member (30) in a direction that retracts the inspection block (25).
It is a continuity inspection method of the wire harness (W) using the continuity inspection device (M) provided with.
The wire harness W is placed on the inspection table (1), and the plurality of connectors (C) attached to the wire harness (W) are placed on the connector support portion (10) of the corresponding continuity inspection jig (10). 21) and the process of supporting
By operating the operating member (39), the inspection block (25) is advanced with respect to the connector support portion (21), and the terminal fitting of the connector (C) is mounted on the inspection block (25). The process of electrically connecting the detection terminals of the detection unit (27) and
A step of energizing the detection terminal of the detection unit (27) and inspecting the continuity of the wire harness (W), and
At least for each group, drive air is supplied to the inspection block retreating air cylinders (53) of the plurality of continuity inspection jigs (10), and the inspection blocks (25) of the plurality of continuity inspection jigs (10) are subjected to the above. The process of retracting and separating from the connector support (21) all at once,
A method for inspecting the continuity of a wire harness W, which comprises.

[2] Each of the continuity inspection jigs (10) is provided with a connector take-out mechanism (60) for taking out the connector (C) supported by the connector support portion (21) from the connector support portion (21).
The connector extraction mechanism (60) is provided with an air cylinder (62) for pushing out a connector that pushes out the connector (C) supported by the connector support portion (21).
The connector extrusion of each of the connector extraction mechanisms (60) is delayed from the step of retracting the inspection blocks (25) of the plurality of continuity inspection jigs (10) from the connector support portion (21) all at once and separating them. The drive air is supplied to the air cylinder (62) to execute the connector pushing operation.
The method for inspecting the continuity of the wire harness W according to the above [1].

[3] A plurality of clamp receiving jigs (80, 80A, 80B, respectively) holding a plurality of clamps (K) for fixing the wire harness provided on the wire harness (W) on the inspection table (1). Equipped with 80C)
The clamp (K) held by the clamp receiving jig (80, 80A, 80B, 80C) is attached to the clamp receiving jig (80, 80A, 80B, 80C). , 80C) is provided with clamp extruding air cylinders (84A, 84B, 84C).
When executing the step of simultaneously retracting and separating the inspection blocks (25) of the plurality of continuity inspection jigs (10) from the connector support portion (21), the clamp pushing air cylinders (84A, 84B, 84C) is supplied with driving air to execute a clamp pushing operation.
The method for checking the continuity of the wire harness W according to the above [1] or [2].

[4] An inspection table (1) on which a wire harness (W) to be inspected for continuity is placed, and
A plurality of continuity inspection jigs (10) required for continuity inspection of the wire harness mounted on the inspection table (1), and
An operating air cylinder (inspection block retracting air cylinder 53, connector extrusion) that is equipped on each continuity inspection jig (10) and causes each continuity inspection jig (10) to perform an operation for completing the inspection at the end of the inspection. Air cylinder 62) and
To the operating air cylinders (inspection block retracting air cylinder 53, connector pushing air cylinder 62) of all of the plurality of continuity inspection jigs (10) or a plurality of continuity inspection jigs (10) for each group. An air supply device (2) that causes the plurality of continuity inspection jigs to perform the same operation by simultaneously supplying drive air from one drive air supply source.
A control device (120) that controls the operation of the continuity inspection jig (10) and the air supply device (2), and
The continuity inspection jig (10) is provided with
A connector support portion (21) that detachably supports the connector (C) attached to the wire harness, and
An inspection block (25) that moves forward and backward with respect to the connector support portion (21),
With the terminal fitting of the connector (C) mounted on the inspection block (25) and supported by the connector support portion (21) by advancing the inspection block (25) with respect to the connector support portion (21). A detection unit (27) provided with a detection terminal that is electrically connected and the connection is released by retracting the inspection block with respect to the connector support portion.
An operating member (39) that moves the inspection block (25) forward and backward with respect to the connector support portion (21).
An inspection block retracting air cylinder (53) that operates by supplying drive air to displace the operating member (39) in a direction that retracts the inspection block (25).
A connector pushing air cylinder (62) that is operated by the supply of drive air and pushes out the connector (C) supported by the connector supporting portion (21).
Have,
The control device (120)
In a state where the detection terminal of the detection unit (27) is electrically connected to the terminal fitting of the connector (C), the detection terminal of the detection unit (27) is energized to conduct the wire harness (W). Functions for determining whether or not it is normal (S203, S204) and
In response to the input signal (S208), the air supply device is controlled to supply drive air to the inspection block retreating air cylinder (53), and the inspection blocks of the plurality of continuity inspection jigs are connected to the connector. A function (S209) of supplying drive air to the connector pushing air cylinder (62) and executing a connector pushing operation while retracting the support portions all at once to separate them.
A wire harness continuity inspection device characterized by having.

1 Inspection table 2 Air supply device 10 Continuity inspection jig 21 Connector support part 25 Inspection block 27 Detection part 30 Operation lever (operation member)
50 Operating lever opening mechanism 53 Inspection block retracting air cylinder 60 Connector extraction mechanism 62 Connector extrusion air cylinder 80, 80A, 80B, 80C Clamp receiving jig 84, 84A, 84B, 84C Clamp extrusion air cylinder 100 Compressor 101 Air supply Tube 102 Electromagnetic open / close valve 105 Speed control valve 120 Control device W Wire harness C connector K, KA, KB, KC Clamp

Claims (4)

Multiple continuity inspection jigs are equipped on the inspection table to correspond to each of the multiple connectors attached to the wire harness.
For each continuity inspection jig,
A connector support portion that detachably supports the corresponding connector and
An inspection block that moves forward and backward with respect to the connector support
Mounted on the inspection block, the inspection block is electrically connected to the terminal fitting of the connector supported by the connector support portion by advancing with respect to the connector support portion, and the inspection block is attached to the connector support portion. On the other hand, a detection unit having a detection terminal that disconnects the connection by retreating.
An operating member that moves the inspection block forward and backward with respect to the connector support portion, and
An inspection block retracting air cylinder that operates by supplying drive air to displace the operating member in a direction that retracts the inspection block.
It is a continuity inspection method of a wire harness using a continuity inspection device provided with.
A step of placing a wire harness on the inspection table and supporting a plurality of connectors attached to the wire harness to the connector support portion of the corresponding continuity inspection jig.
A step of advancing the inspection block with respect to the connector support portion by operating the operation member, and electrically connecting the detection terminal of the detection unit mounted on the inspection block to the terminal fitting of the connector.
The process of energizing the detection terminal of the detection unit and inspecting the continuity of the wire harness,
A step of supplying drive air to a plurality of inspection block retreating air cylinders of the continuity inspection jig at least for each group, and retreating and separating the inspection blocks of the plurality of continuity inspection jigs from the connector support portion all at once. When,
A method for inspecting the continuity of a wire harness, which comprises. Each of the continuity inspection jigs is provided with a connector take-out mechanism for taking out the connector supported by the connector support portion from the connector support portion.
The connector extraction mechanism is provided with an air cylinder for extruding a connector that extrudes a connector supported by the connector support portion.
Drive air is supplied to the connector pushing air cylinders of the connector taking-out mechanism to push out the connectors at a timing delayed from the process of retracting and separating the inspection blocks of the plurality of continuity inspection jigs from the connector support portions all at once. To execute the operation,
The method for inspecting the continuity of a wire harness according to claim 1. A plurality of clamp receiving jigs for holding a plurality of clamps for fixing the wire harness provided on the wire harness are provided on the inspection table.
The clamp receiving jig is provided with an air cylinder for pushing out a clamp that pushes out the clamp held by the clamp receiving jig from the clamp receiving jig.
When executing the step of simultaneously retracting and separating the inspection blocks of the plurality of continuity inspection jigs from the connector support portion, drive air is supplied to the clamp pushing air cylinder to execute the clamp pushing operation.
The method for inspecting the continuity of a wire harness according to claim 1 or 2. An inspection table on which a wire harness to be inspected for continuity is placed, and
A plurality of continuity inspection jigs required for continuity inspection of the wire harness mounted on the inspection table, and
An air cylinder for operation that is installed in each of the continuity inspection jigs and causes each continuity inspection jig to perform an operation for completing the inspection at the end of the inspection.
By simultaneously supplying drive air from one drive air supply source to the operation air cylinders of all of the plurality of continuity inspection jigs or a plurality of continuity inspection jigs for each group, the plurality of continuity inspection jigs are cured. An air supply device that makes the jig perform the same operation,
A control device that controls the operation of the continuity inspection jig and the air supply device, and
The continuity inspection jig is equipped with
A connector support that detachably supports the connector attached to the wire harness,
An inspection block that moves forward and backward with respect to the connector support
Mounted on the inspection block, the inspection block is electrically connected to the terminal fitting of the connector supported by the connector support portion by advancing with respect to the connector support portion, and the inspection block is attached to the connector support portion. On the other hand, a detection unit having a detection terminal that disconnects the connection by retreating.
An operating member that moves the inspection block forward and backward with respect to the connector support portion, and
An inspection block retracting air cylinder that operates by supplying drive air to displace the operating member in a direction that retracts the inspection block.
A connector pushing air cylinder that operates by supplying drive air and pushes out the connector supported by the connector support.
Have,
The control device is
With the detection terminal of the detection unit electrically connected to the terminal fitting of the connector, the detection terminal of the detection unit is energized to determine whether or not the continuity of the wire harness is normal.
In response to the input signal, the air supply device is controlled to supply drive air to the inspection block retracting air cylinder, and the inspection blocks of the plurality of continuity inspection jigs are retracted all at once from the connector support portion. A function to supply drive air to the connector pushing air cylinder and execute a connector pushing operation.
A wire harness continuity inspection device characterized by having.

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