WO2005052958A1

WO2005052958A1 - Jig for installation inspection

Info

Publication number: WO2005052958A1
Application number: PCT/JP2004/017983
Authority: WO
Inventors: Hideo Onishi; Yoshikazu Taniguchi; Mishio Hayashi; Shuji Yamaoka; Akira Nurioka
Original assignee: Sumitomo Wiring Systems, Ltd.; Oht Inc.
Priority date: 2003-11-28
Filing date: 2004-11-26
Publication date: 2005-06-09
Also published as: JP2005166303A; CN100580821C; JP4397222B2; KR100784571B1; KR20060116003A; CN1883016A

Abstract

An inspection jig for a harness inspection device, where, even when specifications of a connector constituting harness are changed, it can be dealt with by a small change, eliminating need for newly making all jigs, as has been conventionally done, every time when connector specifications are changed. A connector-holding section (400) having a receiving section (450) for receiving a connector housing (10), wherein sensor plates are provided on side inner wall sections, which are opposite to each other, of the receiving section (450), an alternate current signal is applied to a terminal inserted in a connector (10), the alternate current signal from the terminal is detected by the opposite sensor plates, the relative distance between the sensor plates and the terminal is detected by an inspection control section (100) based on the signal detected by the opposite sensor plates, the position of the terminal installed in the connector is detected from a relative value of the detection signal at the sensor plates, and thus whether or not the terminal is correctly inserted is confirmed. When the outer size of the connector is smaller than the connector-receiving section (450), the connector (10) is set in a through-hole (465a,b) of an attachment member (460a, 460b), and the connector (10) is received in the connector-receiving section (450) together with the attachment member (460a,b).

Description

Description Mounting inspection jig Technical field

The present invention relates to a mounting inspection jig that can be inspected only by replacing a part of jigs even when various types of connector housings are inspected when inspecting the mounting of a cut-off piezoelectric wire having terminals fixed thereto in a connector. It is about. Background art

When manufacturing a harness, it is necessary to check that the harness has been correctly assembled. Conventionally, for example, in Patent Document 1, each connection terminal of each input terminal of the input terminal group of the inspection device main body and each connection terminal of each output terminal of the output terminal group is connected to the input side connector and the output side connector of the work panel, respectively. In the memory mode operation prior to the inspection, the connectors at both ends of the model harness are fitted to the input and output connectors on the work panel, and the terminals at both ends of each core wire, which are the specifications of the model harness, and each terminal of the connector, Was stored as the reference date.

After that, when the end terminal of the cut-off piezoelectric wire that constitutes the harness is attached between the input side and output side connectors on the work panel side, in the inspection mode operation, each input terminal of the input terminal group from the inspection device body side Inspection signals are sequentially output to the input side connector, one connector, the piezoelectric wire to be inspected, the other connector, the output side connector, and the output terminal of each output terminal of the output terminal group.判断 It is determined whether the inspection signal has been input via the terminal in the insertion hole, and it is determined that each core wire of the piezoelectric wire to be inspected and each terminal of the connector attached to both ends of the core are inserted into the insertion hole. Inspection data is collected Was.

The inspection data thus obtained is compared with previously stored reference data to determine whether a defect has occurred in the inspection data.

Patent Document 1 JP-A-8-146600

However, in the method of Patent Document 1 described above, it is necessary to perform the inspection by directly contacting the inspection probe from the inspection device with the terminals of both the inspection signal supply side and the inspection signal receiving side of the inspection harness. A cut-off that constitutes the eighteenthness A special inspection probe must be manufactured each time according to the shape of the connector to which the terminal of the piezoelectric wire is attached, and it must surely contact at least a part of the terminal attached to the connector. I had to.

In addition, the inspection probe could be deteriorated, worn, or damaged, resulting in terminal deformation.

Furthermore, as connectors have become smaller and more dense, the cost of manufacturing jigs that match the connectors has been rising. Disclosure of the invention

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problem, and can confirm the mounting state of a cutting piezoelectric wire terminal in a connector with only a simple configuration, is versatile, and damages a cutting piezoelectric wire terminal. An object of the present invention is to provide an inspection device capable of detecting a mounting position of a cutting piezoelectric wire terminal to a connector in a non-contact manner in a harness manufacturing process without producing the same.

It is still another object of the present invention to provide an inspection apparatus which can determine a defective mounting of a cutting piezoelectric wire terminal on a connector in a harness manufacturing process and provide a highly reliable harness without going through a special inspection process.

For example, the following configuration is provided as one means for achieving the object. That is, this is a mounting inspection jig used for a terminal mounting inspection device capable of inspecting a mounting position of a terminal to which an AC signal is applied in a connector housing in a non-contact manner with the terminal, and housing and holding the connector housing. A holding portion, and at least one pair of conductive plates disposed opposite to a position near a side surface of the connector housing stored and held in the holding portion and capable of detecting an AC signal from the terminal mounted in the connector housing; Mounting the terminal to which the AC signal is applied into the connector housing from the detection result of the AC signal from each of the opposing conductive plates into the connector housing of the terminal to which the AC signal is applied. It is a jig for mounting inspection that can determine the mounting position of the device.

Also, a mounting inspection jig used for a terminal mounting inspection device capable of inspecting a mounting position of a terminal to which an inspection signal is applied in a connector housing, the attachment member being capable of storing the connector housing, It is characterized by having a holding portion for storing and holding the attachment member, and at least a pair of conductive plates provided on a side surface of the holding portion.

And, for example, the inspection signal is an AC signal, the conductive plate can detect an AC signal from the terminal mounted in the connector housing, and the attachment member is formed according to connector housing specifications. It is characterized in that the holding portion is common regardless of the connector housing specification.

A mounting inspection method in a terminal mounting position inspection apparatus capable of determining a mounting position of a terminal to which an AC signal is applied in a connector housing without contacting the terminal, wherein the connector housing is the same as the above-mentioned connector housing. Item 2. An AC signal from a terminal to which a cutting piezoelectric wire to which an AC signal is applied is housed in the housing recess through the attachment member of the mounting inspection jig according to Item 2, and the AC signal is applied in the connector housing. Are provided opposite to each other A terminal mounted on the cutting piezoelectric wire to which the AC signal is applied based on a relative detection value of a detection signal from each of the conductive plates detected by at least a pair of conductive plates. The method is characterized by a method of confirming the mounting position of the terminal for determining the position. Brief Description of Drawings

FIG. 1 is a schematic diagram for explaining a basic principle of a terminal mounting state checking device for detecting a mounting state of a cut piezoelectric wire terminal to a connector according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a detailed configuration of a test signal processing unit of a test control unit according to the present embodiment.

FIG. 3 is a diagram illustrating an example of detection in the inspection control unit according to the present embodiment.

FIG. 4 is a schematic diagram for explaining a configuration example of a connector holding section according to the present embodiment.

FIG. 5 is a flowchart for explaining a mounting inspection method in the device for checking a mounted state of a terminal to a connector according to the present embodiment. FIG. 6 is a diagram illustrating an attachment member according to a second embodiment of the present invention.

FIG. 7 is a diagram for explaining a detailed configuration of a test signal processing unit of a test control unit according to a third embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

The terminal mounting state checking device of the present embodiment is a terminal of a correct cutting piezoelectric wire. This is a device that can determine whether or not the connector is mounted in the correct position of the connector housing without contacting the connector housing and the terminal.If the device of the present embodiment is used, the correct cutting piezoelectric wire terminal is inserted into the connector in the harness manufacturing process. It is possible to determine whether or not the connector has been mounted correctly when mounting on a connector, and it is not necessary to check the mounting status of the connector in a later process.

[First Embodiment]

First, with reference to FIG. 1, a description will be given of the principle of inspecting the terminal mounting state of the terminal mounting state checking device to which the present invention is applied. FIG. 1 is a schematic diagram for explaining a basic principle of a terminal mounting state checking device for detecting a mounting state of a cutting piezoelectric wire terminal to a connector according to an embodiment of the present invention.

In FIG. 1, reference numeral 10 denotes a connector housing (hereinafter referred to as a “connector”) that constitutes an end portion of a harness to be inspected. A predetermined position within the connector 10 is provided with a cutting piezoelectric wire having a predetermined specification. One end terminal of 300 is inserted to a predetermined depth.

The cutting piezoelectric wire 300 attached to the connector is cut into a predetermined length in advance, and a terminal of a predetermined specification to be attached to the connector 10 is fixed to an end portion by, for example, crimping.

The connector 10 is stored in the connector storage section 450 of the connector holding section 400. On the inner wall of the connector housing, Y-axis sensors 20a, 20b and X-axis sensors 30a, 30b, which will be described later, are disposed so as to face each other. It is configured to be located near the outer wall on the side surface of the connector 10 when housed in 450.

20a and 20b are opposite one side surfaces of the connector 10 disposed on the inner wall portion of the connector storage portion 450, for example, near the inner wall which is both long side surfaces when the connector 10 is rectangular in a top view. The Y-axis sensor plate to be provided, 30a, 30b is the other side of the connector 10 installed on the inner wall of the connector housing 450 If the connector 10 is rectangular when viewed from above, it is an X-axis sensor plate that is arranged near the inner wall that is on both short sides.

Reference numeral 100 denotes an inspection control unit that controls the inspection device. The inspection control unit is connected to each sensor plate provided in the connector holding unit 400 by a signal line, and can detect a detection signal from each sensor plate. Is configured.

Since the sensor plates (20a, 20b, 30a, 30b) are located near each side of the connector 10, the cut-off piezoelectric wire terminal to which the AC signal is applied is located. When attached to the connector 10, the signal from the terminal is detected by the sensor plate (20a, 20b, 30a, 30b), and a detection signal is obtained. Specifically, a detection signal corresponding to the distance from the terminal is detected.

In the inspection control unit 100 of the present embodiment, the value of the detection signal detected by the pair of opposed sensor plates among the sensor plates (20a, 20, 30a, 30b) is determined. Based on this, the relative distance between the sensor plate and the terminal based on the distance between the sensor plates is detected. This reduces the effects of the level difference (variation in the applied test signal intensity) of the AC signal applied to the cutting piezoelectric wire.

Y-axis sensors 20a and 20b detect the position in the Y-axis direction (short side direction) in connector 10 and X-axis sensors 30a and 30b detect the X-axis direction in connector 10 By detecting the position (long side direction), the position of the terminal to which the AC test signal is applied in the connector 10 can be specified, and it can be detected whether or not the terminal has been inserted into the correct position.

The detailed configuration of the test signal processing unit of the test control unit 100 shown in FIG. 1 will be described below with reference to FIG. FIG. 2 is a diagram for explaining the detailed configuration of the signal processing unit of the inspection control unit according to the present embodiment.

In FIG. 2, 11 1 to 11 4 are sensors 扳 (20 a, 20 b, 30 a , 30a), amplifiers A-D, 121-124 detect the peak value of the detection signal from the sensor plate (20a, 20b, 30a, 30b) The peak detection circuits A to D.

1 3 1 is an X-axis addition circuit that inputs the peak detection signals VX 1 and V x 2 from the X-axis sensors 30 a and 30 b, adds the detected values to <Vx l + Vx 2), and adds them. Is a Y-axis addition circuit that inputs peak detection signals Vy1 and Vy2 from the Y-axis sensors 20a and 20b, adds the detected values to (Vyl + Vy2), and adds them.

1 4 1 receives the output of the X-axis addition circuit 13 1 and the peak detection signal value from one of the X-axis sensors 扳 (for example, 30 b), and outputs the X-axis addition signal from the X-axis addition circuit 13 1 ( (Vx l + Vx 2) is the denominator, and {Vx 2 / (Vx 1 + V x 2)} is the numerator of the peak detection signal (Vx 2) from one X-axis sensor plate (for example, 30b). This is the X-axis division circuit to be found.

The output of the X-axis division circuit 141 indicates the relative change in the detection signals of the X-axis sensors 30a and 30b, and there is a change in the strength of the AC test signal applied to the cutting piezoelectric wire. Can also offset the effects. As a result, the output of the X-axis divider circuit 141 becomes a signal level directly corresponding to the position in the X-axis direction in the connector 10. The X-axis position of the mounted cable terminal can be detected in a non-contact manner.

The input 142 receives the output from the Y-axis adder circuit 13 and the peak detection signal value from one of the Y-axis sensor boards (for example, 20b), and the Y-axis from the Y-axis adder circuit 13 The added signal (Vy l + Vy 2) is used as the denominator, and one Y-axis sensor plate (for example, {Vy 2 / (V 1 + Vy 2)} that uses the peak detection signal (Vy 2) from 20 t as the numerator) This is the desired Y-axis divider circuit.

The output of the Υ axis division circuit 142 indicates the relative change of the detection signal of the Υ axis sensor 20a, 2Ob, and the intensity change to the AC inspection signal applied to the cutting piezoelectric wire. Even if it is, the effects can be offset. As a result, since the output of the Y-axis divider circuit 142 has a signal level directly corresponding to the position in the Y-axis direction in the connector 10, the output of the Y-axis divider circuit 142 is attached to the connector 10 from the output of the Y-axis divider circuit 142. The Y-axis position of the cut-off piezoelectric wire terminal can be detected in a non-contact manner.

Connector from output of X-axis divider circuit 1 4 1 and output of Y-axis divider circuit 1 42

The mounting position (two-dimensional position) of the piezoelectric wire terminal in the X-Y direction within 10 can be detected without contact.

The above circuit configuration is based on the X-axis sensor board and the Y-axis sensor board, where X or Y is n.

[1 / {(1 / Vn 2) + (1 / Vn l)}] / Vn l

= {(V n 1 X V n 2) / (V n 1 + V n 2)} / Vn l

= (V n 2) / (V n 1 + V n 2)

Is satisfied.

That is, in the present embodiment, since the AC inspection signal is detected using the electrostatic coupling, the detection level of the inspection signal from the conductive plate is a value that is inversely proportional to the distance from each of the cut-off piezoelectric wire terminals. It becomes.

Therefore, the reciprocal operation values (1 / Vx1) and (1 / Vx2) are values that are proportional to the distance from the cut piezoelectric wire terminal, respectively.

Therefore, the sum l / Vnl) + (1 / Vn2)} is an amount corresponding to the distance (reference distance) between the conductive plates 20a, 20b or 30a, 30b. Therefore, the final quantity [1Z 1 / Vn 2) + (1 / Vn 1)}] V nl indicates the position of (l ZVn l) with respect to the reference distance, and the constant variation related to the supply inspection signal Absorbs the minute. Furthermore, the result of this ratio is a quantity proportional to the distance, which is optimal for use in inspections.

As shown in Fig. 1, the distance between two conductive plates arranged at right angles to the connector row direction is used as the reference distance for position measurement. Expressed as a value). The reference values include at least a reference value for the X-axis sensor plates 30a and 30B and a reference value for the Y-axis sensor plates 20a and 2Ob.

For example, when using a holder for holding a connector, the tolerance of the reference distance is determined by the mechanical accuracy of the holder used, but in the present embodiment, a tolerance of about 0.1 mm can be sufficiently realized. The terminal position can be measured accurately.

At the time of measurement, the test signal detection level detected by a pair of conductive plates differs depending on the terminal mounting position on the connector, but the amplification level and offset when processing test signals from the opposing conductive plates match. For example, if the peak value is detected, Vx 1 and Vx 2 can be obtained as DC voltage values.For example, if {V x 2Z (V x 1 + Vx 2)} is obtained by the X-axis division circuit, the inspection signal A voltage value Vx1 corresponding to the mounting position L of the supply terminal can be obtained.

For this reason, the level of the test signal applied to the cutting piezoelectric wire for some reason

Even if it becomes (1/2), only the values of V X 1, V X 2 etc. become (1/2), and the position equivalent voltage value is not affected.

Therefore, in the present embodiment, the result of the above calculation when the terminal to which the inspection signal is applied is inserted into each position of the connector in advance is checked and held as a reference value, and the terminal to be inspected is When inserted, the insertion position is detected by comparing with this reference value.

The arithmetic unit that performs the above addition or division may be configured by a hardware arithmetic circuit, or may be realized by software arithmetic using a computer and a computer program.

Fig. 3 shows an example of the inspection result in the inspection control unit. FIG. 3 is a diagram for explaining an example of a detection result in the inspection control unit according to the present embodiment. In the example of FIG. 3, the terminal holding portion (cavity) of the connector housing is configured to have two rows of upper and lower rows of six rows of lattice-shaped cavities as shown in FIG. 1, and the terminals are positioned in the lower row of the first row of the cavities. This is an example of processing by the hardware operation circuit when the data is sequentially moved and inserted from (1, 2) (the unit is "V").

Since the electrostatic coupling is used to supply the AC test signal to the cutting piezoelectric wire, the level of the test signal cannot be kept constant and is expected to fluctuate greatly. For this reason, when a test signal of 20 Vp-p is given to the disconnecting piezoelectric wire and when a test signal of 10 Vpp is given, the terminal is inserted into each cavity of the connector housing. The detection results are compared in the case where they are performed.

In the example of Fig. 3, the upper stage shows the test signal when the test signal of 20 Vp-p is given. The detection result and the output example of the division circuit after the operation. The lower stage gives the test signal of 10 Vp-p. This is an example of the test signal detection result and the output of the divider circuit after the calculation.In this way, even if the test signal level applied to the cutting piezoelectric wire fluctuates greatly, the variation of the divider circuit output voltage X1 is 4% Less than, and a unique detection result is obtained for the cavity position.

Table 1 shows the detection results. In Table 1, the vertical axis indicates the calculated X voltage value, and the horizontal axis indicates the terminal insertion row position of the CAPITITY, and indicates the terminal insertion position in each of the first to sixth columns. The left end shown in is the first column, and the right end is the sixth column. table 1

1 2 3 4 5 6 Cavity position

Table 2 shows the relationship between the calculated value X of the divider in Table 1 and the cavity position.

As shown in the lower part of FIG. 3, the relationship between the calculation result and the cavity position is as shown in the above graph.

Since the connector housing has cavities at approximately 2.5 mm pitch at equal intervals, there is a proportional relationship between the calculated value of X and the position of the cavities. Without being affected by Since the values are almost the same, it is possible to identify the cavities whose terminals have been inserted by the calculated value of X.

This is exactly the same for the Y-axis sensor plates 20a and 20b, and a cut-off piezoelectric wire checker that can obtain stable detection results even if the test signal supplied to the cut-off wire fluctuates. And

From the above, the insertion position to each cavity in the column direction is specified by the X-axis sensor plates 30a and 30b, and the insertion position to the cavity in the row direction by the Y-axis sensor plates 20a and 2Ob. Can be specified.

In the inspection equipment used in the manufacturing process, the connector 10 is positioned and housed in the connector housing 450 of the connector holder 400 at the cutting piezoelectric wire manufacturing site, and each sensor plate is placed on the side of the connector. It must be positioned near or near the bottom.

For this reason, in the present embodiment, a connector holding portion is used for holding the connector and for positioning the sensor plate.

In the connector holding section 400 of the present embodiment, the connector housing section

When each sensor plate is placed S on the side wall portion of 450, and when the size of the connector is almost the same as the size of the connector housing portion 450, the sensor plate is housed as it is, so that a good inspection can be performed. However, the present invention is not limited to this case. When the size of the connector is smaller than that of the connector housing section 450, the outer shape is almost the same as the internal volume of the connector housing section 450, and is substantially at the center. For example, if an attachment member made of resin was formed with an A-A through hole that could accommodate the connector housing, the attachment member would be stored in the connector storage section 450 before storing the connector. Good.

FIG. 4 shows an example of an inspection jig for accommodating the connector housing in the connector accommodating portion via the attachment member of the present embodiment. In Fig. 4, the connector that holds and holds the connector 100 with the connector 100 positioned This is a connector holding section provided with a storage section 450.

For 450, the sensor plates (20a, 20b, 30a, 30b) are arranged on the side (not shown in Fig. 4), and the connector housing that can hold and hold the connector housing inside Department. If the outer shape of the connector housing is the same as the inner shape of the connector storage section 450, store the connector housing in the connector storage section 450 as it is.

On the other hand, when the external shape of the connector housing is smaller than the internal volume (internal shape) of the connector housing section 450, the external shape is almost the same as the connector housing section 450 and almost the same as the external shape of the connector housing to be inspected near the center. The connector housing is stored via an attachment member with a storage space (for example, a through hole or hole). In the following description, an example will be described in which the housing space for the connector housing is formed by a through hole that is most easily manufactured.

4A and 4Bb of FIG. 4 are loosely fitted in the connector storage section 450, and the connector member for storing the connector housing 10a and b in the center through hole 465a and b. It is.

In the example of FIG. 4, the relatively large connector 10a is housed in the through hole 465a of the left attachment member 460a, and the through hole 465b of the right attachment member 460b. A relatively small connector 10b is stored inside.

Also, on the side of the inner wall of the connector storage section 450 of the connector holding section 400

The X-axis sensor plates 30a, 30b and the Y-axis sensor plates 20a, 2Ob are fixed to each other, and the side of the connector stored in the connector storage portion 450 or the attachment member 460. It is configured to be almost constant distance from the side of the connector held by a and b.

Therefore, the attachment members 460a and 460b are set and held in the connector storage section 450 of the connector holding section 400 when the cutting piezoelectric wire is inserted. Then, simply by housing the connector 10 in the attachment members 460a and b, the mounting inspection of the cutting piezoelectric wire can be performed.

With the above configuration, even if the connector has a variety of sizes and it is necessary to attach the cut-off piezoelectric wire terminal to the connector of various sizes, the connector is smaller than the connector housing section 450. For example, the connector is housed in an attachment member 460a, b having an external shape formed of, for example, resin and having a connector housing 450 shape, and the attachment member 460a is stored in the connector housing 450. , B can be stored, and by replacing this inexpensive attachment member 460, connectors of various specifications can be easily accommodated. In this case, high-precision and reliable inspection can be performed. No

In an inspection device using a computer, the terminal insertion position can be processed as coordinate position data. For this reason, even if the specifications of the connector housing are changed, the inspection device can respond by simply changing the terminal insertion position data (coordinate position data).

On the jig side, the connector housing is housed in the connector housing section via the attachment member.Therefore, when the specifications of the connector housing are changed, the shape of the through hole of the attachment member with the same external shape is changed. Various types of connector housings can be handled simply by preparing and replacing components.

Moreover, the processing of the attachment member requires only forming a through hole for the connector eight housing outer shape, which is easy to process, except for the outer shape of the connector housing shape. As a result, it is possible to quickly respond to changes in the specifications of the connector housing.

For this reason, a new dedicated jig had to be manufactured each time the conventional connector specifications were changed. An attachment member can be manufactured by simply forming an easy-to-use through-hole even if it is standardized, and an inspection jig can be obtained easily in a short period of time at low cost.

With reference to the flowchart of FIG. 5, a description will be given below of the control for mounting the cutting piezoelectric wire terminal to the connector 10 of the apparatus according to the present embodiment having the above configuration. FIG. 5 is a flowchart for explaining a mounting inspection method in the apparatus for checking the mounting position of a terminal with respect to a connector according to the present embodiment.

In FIG. 5, first, in step S1, the connector 10 is housed in the connector housing section 450 of the connector holding section 400 shown in FIG. 4, and is held by the connector holding section 400.

In this embodiment, when the connector 10 is housed in the connector housing portion 450 positioned at the cutting piezoelectric wire insertion work position, each sensor plate (20a, 20b, 30a , 30 b) are positioned and arranged so as to be in the vicinity of each side surface of the connector 10, and only the connector 10 is positioned and stored in the connector storage section 450 to be in a testable state described later. For this reason, when the connector 10 is correctly stored, the process may proceed to the process of step S2 and subsequent steps.

When the positioning of the connector is performed, the process proceeds to step S2, and the supply of the AC test signal of a predetermined frequency (application of the test signal) to the disconnecting piezoelectric wire 300 to be inserted into the connector 10 is started.

In the next step S3, the inspection control unit of the inspection apparatus is activated, and a state is established in which it is possible to inspect that the disconnected piezoelectric wire terminal to which the inspection signal has been applied is inserted into the connector.

Next, in step S4, the inspection controller 100 is driven to start detection of the terminal 揷 input position (attachment state). In the inspection control unit 100, the peak detection circuits A to D (121 to 124) are connected to The detection of the peak of the detection signal is started.

The worker inserts the mounting terminal of the disconnecting piezoelectric wire to which the inspection signal is applied into a predetermined position of the connector, and performs the mounting work. When the mounting work to the connector is performed, the detection result of each sensor plate is obtained, and the insertion position of the terminal into the connector is detected from the detected peak value.

When the disconnection piezoelectric wire terminal is attached to the connector, the process proceeds to step S5, and the inspection control unit 100 determines that the terminal of the disconnection piezoelectric wire to which the AC signal is applied is inserted into a predetermined connector position. Determine whether or not it has been detected.

The detection of attachment is, for example, completion of attachment when the terminal is inserted into the connector 10 and the position of the attached terminal does not change for a certain period of time.

. That is, when the detection signal level from each sensor board (20a, 20b, 30a, 30b) is higher than a certain level and does not change for a certain time, it is determined that the terminal insertion is completed. It is possible to do. In addition, the worker may determine that the mounting is completed by turning on the switch.

In the present embodiment, the measurement of the terminal insertion position into the connector 10 is performed by measuring a detection signal value in each case when a terminal is inserted into each position of the connector in advance and registering it as a reference measurement value. For example, a threshold value for determining the insertion position is obtained and registered together with a reference measurement value.

Then, the measurement detection result on the X-axis sensor plate detected in the inspection mode,

The measurement detection result of the Y-axis sensor plate is compared with the reference measurement value, and the position of the connector into which the terminal is inserted is determined based on the measurement detection result.

For example, the insertion position is determined by comparing the detection result when the correct cutting piezoelectric wire terminal is inserted into the correct position in advance with the detection result when the operator attaches the cutting piezoelectric wire terminal to the correct position. If it is within the specified range, it is determined that the device is properly mounted. In the case of this embodiment, when mounting is not performed at the normal position Since the detection signal from each sensor plate (20a, 20b, 30a, 30b) is different from the normal case, in step S5, If it is not detected that the terminal has been inserted into the predetermined connector position, the process proceeds to step S6 to identify the cause of the failure.

In determining the insertion position in the above description, the detection result when the correct cutting piezoelectric wire terminal is inserted into the correct position in advance is compared with the detection result when the operator installs the cutting pressure wire terminal. Rather than comparing the calculated terminal insertion position derived from the detection result with the accurate position, the quality of the insertion may be checked.

For example, when the input of the terminal is hardly detected, it is determined that the test signal is not supplied, the disconnection piezoelectric wire terminal which should not be attached is attached, or the terminal portion is not connected to the disconnection piezoelectric wire portion ( Disconnection).

Then, in step S7, the operator is notified of the occurrence of the defect and the cause thereof. The occurrence of a defect is indicated by an alarm sound and a blinking display of an erroneous point, for example, a cause is displayed on a display panel (not shown), and a defective point and a correct insertion position are displayed.

The operator receives the error notification and performs necessary error processing thereafter. For example, if the insertion position is incorrect, or if the cutting piezoelectric wire terminal is deformed, remove the inserted cutting piezoelectric wire terminal and insert another new cutting piezoelectric wire terminal into the connector 10. Become.

On the other hand, if the inspection control unit 100 detects in step S5 that the disconnection to which the AC signal has been applied has been inserted into the predetermined connector position of the piezoelectric wire terminal, step S100 is performed. Proceed to and judge whether or not all the mounting of the disconnection piezoelectric wire terminals to the connector 10 has been completed. When all of the disconnection piezoelectric wire terminals to the connector 10 have been mounted, this fact is notified by, for example, an end sound, The attachment of the terminal to the connector ends.

In step S10, if the mounting of the cutting piezoelectric wire terminal to the connector 10 has not been completed, the process proceeds to step S15, where the next cutting piezoelectric wire terminal to be mounted and the inside of the connector 10 are connected. Specify the storage position and proceed to step S2.

As described above, according to the present embodiment, it is only necessary to dispose the sensor plate in the vicinity of the outer side wall of each side of the connector housing, and to completely touch the cut piezoelectric wire terminal mounted on the connector housing. In the process of attaching the cutting piezoelectric wire terminal to the connector housing, the mounting position to the connector can be detected, making it possible to detect the occurrence of defective products in the manufacturing process. Manufacturing becomes possible.

In the present embodiment, the terminal insertion position can be inspected only by storing the connector in the connector storage section. Therefore, even if the harness specification is changed and the connector specification is changed, the connector can be used. It is sufficient if it can be stored in the connector storage section.Even if the connector specification changes, it can be handled with only a slight change such as changing the attachment member. In addition, there is no need to contact the test probe with the terminals, and the number of test probe terminals corresponding to the number of connector mounting terminals becomes unnecessary. Many signal lines are no longer required, and only four signal lines connected to the sensor board are used to connect terminals to connectors. Thailand can be inspected.

Further, according to the present embodiment, since the inspection result of the mounting state of the cutting piezoelectric wire terminal to the connector housing is recognized as detection coordinate data in the connector holding unit, for example, the connector specification is changed. Even if it becomes The next position can be defined as new coordinate data. As a result, for example, by simply rewriting the coordinate data of the inspection device in accordance with the connector specifications, it is possible to cope with a change in the specification of the connector to be inspected, and an extremely versatile inspection device is realized. In this case as well, the inspection jig side requires only a slight change to change the attachment member, and can quickly and easily respond to a wide variety of connector specifications.

[Second Embodiment]

In the above description, an example has been described in which the attachment member is provided with one storage space for storing the connector substantially at the center. However, the present invention is not limited to the above example. For example, one attachment member may be provided with two or more storage spaces for storing two or more connectors. Alternatively, two or more attachment members may be accommodated in the connector accommodating portion of the connector holding portion, and the connector may be accommodated in each attachment member. With the above configuration, the state of terminal insertion into two or more connectors may be made inspectable.

A second embodiment according to the present invention for accommodating a plurality of connectors in the connector housing section of the connector holding section will be described with reference to FIG. FIG. 6 is a diagram illustrating an attachment member according to a second embodiment of the present invention. In the following description, a case where two connectors are stored in the connector storage section of the connector holding section will be described as an example. It is clear that the same test can be performed with two or more pieces.

Also in the second embodiment, the configuration other than the attachment member is the same as that of the above-described first embodiment, and the following description is made for a configuration different from that of the above-described first embodiment. A description of the configuration other than the connector storage section and the attachment member will be omitted. 6A shows an example in which two connectors are stored in an attachment member, and FIG. 6B shows an example in which two attachment members are stored in a connector storage portion.

In FIG. 6, the attachment member 460c shown in (A) has two connector storage spaces (connector storage holes) 465c and 4 as attachment members to be stored in the connector storage portion 450. 65 d is provided, and the two connectors are stored in the respective connector storage spaces 465 c and 465 d.

The attachment members 460e and 460f shown in FIG. 6B are provided with connector storage spaces 465e and 465f at the center of the attachment members 460e and 460f, respectively. Then, when the two attachment members 460 e and 460 f are arranged, the size becomes exactly the same as the size of the connector storage portion 450 of the connector holding portion 400, and is fitted exactly. For this reason, the attachment members 460 e and 460 f do not rattle.

The inspection control unit 100, which performs the mounting inspection of the disconnecting piezoelectric wire terminal supplied with the inspection signal into the connector housing, also determines the value of the detection signal detected by the pair of sensor plates facing each other among the sensor plates. In addition, since the relative distance between the sensor plate and the terminal is detected based on the distance between the sensor plates, an inspection result that is not affected by the number of connectors or the like can be obtained.

As described above, according to the second embodiment, the insertion state of the terminal inserted into each of two or more connectors can be inspected by one set of terminal position inspection devices.

[Third Embodiment]

Furthermore, in the above-described embodiment, an example has been described in which the X-axis or Y-axis sensor plates are disposed to face each other with the connector housing interposed therebetween. However, the present invention is not limited to the above-described example. The two sensor plates may be positioned and arranged close to each other on one side of the container housing so that they are separated from each other by a certain distance and are almost parallel to each other.

For example, by attaching sensor plates to both sides of a sheet-like insulating material and arranging them on the inner wall surface of one side of the connector housing, two sensor plates are separated from each other by a certain distance on one side of the connector housing. It is sufficient to position and arrange them so that they are almost parallel.

The method of arranging the sensor plate is not limited to the above example.The sensor plate may be embedded in the side wall, or may be attached to the side wall of the attachment member when the attachment member is used. Is also good.

Fig. 7 shows the inspection principle of the inspection device in the third embodiment in which two sensor plates are positioned and arranged close to each other on one side of the connector housing so that they are separated from each other by a certain distance and are almost parallel. This will be described below with reference to FIG. FIG. 7 is a diagram for explaining a detailed configuration of the test signal processing unit of the test control unit according to the third embodiment.

In FIG. 7, 20 c, 20 <1 is a 丫 -axis sensor plate, 30 c, 30 (1 is an axis sensor plate, and 1 1 to: L 14 is a sensor plate (20 c, 20 d , 30c, 30d) amplifiers A to D and 121 to 124 that amplify the detection signals from the sensor plates (20c, 20d, 30c, 30d) Peak detection circuits A to D for detecting the peak value of the signal.

Reference numeral 135 denotes an X-axis subtraction circuit that inputs detection peak signals from the X-axis sensors 30c and 30d and outputs the difference (Vx1-Vx2). Reference numeral 1336 denotes a Y-axis subtraction circuit that inputs the detected peak signals from the Y-axis sensors 20c and 20d and outputs the difference (Vy1-Vy2).

1 45 uses the X-axis difference signal (Vx 1—Vx 2) from the X-axis subtraction circuit 1 3 5 as the denominator, and uses the detection signal (Vx 2) from the X-axis sensor 30 d as the numerator {Vx 2 / ( VX 1-VX 2)}. The output of the X-axis division circuit 145 represents the relative change in the detection signals of the X-axis sensors 30c and 30d. The effect of the intensity change can be offset.

As a result, the output of the X-axis division circuit 1 45 has a signal level proportional to the distance between the terminal of the cut-off piezoelectric wire and each of the X-axis sensors 30 c and 30 d. From the output of 45, it can be detected in a non-contact manner whether the terminal is inserted at the correct X-axis position.

1 46 uses the Y-axis difference signal (Vy 1—Vy 2) from the Y-axis subtraction circuit 13 6 as the denominator and the detection signal (Vy 2) from the Y-axis sensor 20 d as the numerator {V y 2 / (Vy 1-Vy 2)}.

The output of the Υ axis divider circuit 146 represents the relative change of the detection signals of the Υ axis sensors 20 c and 20 d. The effect of the intensity change can be offset.

As a result, the output of the Y-axis division circuit 146 becomes a signal level proportional to the distance between the terminal of the cut piezoelectric wire and each of the Y-axis sensors 20c and 20d. From the output of 46, it can be detected in a non-contact manner whether or not the terminal is correctly inserted into the Y-axis mounting position.

Cut the X-Y direction mounting position (two-dimensional position) of the piezoelectric wire terminal into the connector 10 from the output of the X-axis division circuit 1 4 5 and the output of the Y-axis division circuit 1 4 6 without contact. Can be detected.

C 1 / {(1 / Vn 2)-(1 / Vn 1)}) / Vn 1

= {(V n 1 X V n 2) / (Vn 1-Vn 2)} / V n 1

= (V n 2) / (V n 1-V n 2)

Is satisfied. In the third embodiment, the X-axis sensor 30d and the Y-axis sensor 20d are located behind the X-axis sensor 30c and the Y-axis sensor 20c as viewed from the connector side. The connector 10 is made of a non-conductive material, and the X-axis sensors 30c and 30d and the Y-axis sensors 20c and 20d are both maintained in a high impedance state. The detection value of the AC signal from the terminal in the X-axis sensor 30d and the Y-axis sensor 20d is slightly affected by the X-axis sensor 30c and the Y-axis sensor 20c. The influence is not interrupted by the X-axis sensor 30c and the Y-axis sensor 20c, and a constant level value can be detected without fail.

As a result, the relative relationship between the detected values of X-axis sensor 30c and X-axis sensor 30d and the relative relationship between the detected values of Y-axis sensor 20c and Y-axis sensor 20d are It is determined only by the insertion position, and the insertion position of the terminal into the connector 10 can be detected almost accurately.

That is, the presence of the X-axis sensor 30c and the Y-axis sensor 20c does not prevent the AC signal from being detected from the X-axis sensor 30d and the Y-axis sensor 20d. Even though the detection levels of the X-axis sensor 30d and the Y-axis sensor 20d may slightly decrease due to the presence of the axis sensor 20c, a certain level value can be reliably detected.

This is the same even if the terminal inserted into the connector 10 is not the first terminal, and if some terminals are already mounted in the connector 10, the Even if the detection level on the sensor plate fluctuates depending on the position and number, it is possible to accurately identify whether the terminal insertion position is correct in each case.

That is, in the third embodiment, since the AC inspection signal is detected by using the electrostatic coupling, the detection level of the inspection signal from the conductive plate is inversely proportional to the distance between each input terminal. Value. Therefore, the reciprocal operation value (1 / Vn 1) and (1 / Vn 2) are values proportional to the distance to the terminals.

Therefore, these differences lZVn 1)-(1 / Vn 2)} correspond to the distances (reference distances) between the X-axis sensors 30c and 30d and the Y-axis sensors 20c and 20d. Therefore, [1 / {(1 / Vn 1) 1 (l / Vn 2)}] / V nl indicates the ratio of (lZVn l) to the reference distance, and the rate of variation of the constant rate related to the supply inspection signal Has absorbed. The result of this ratio is a quantity that is proportional to the distance, making it ideal for use in inspections.

As a result, when the terminal is inserted, the output of the X-axis division circuit 145 and the output of the Y-axis division circuit 146 can obtain a detection result specific to the distance to the terminal. The detection error of the distance from the sensor to the terminal in the third embodiment is extremely small, and the accuracy required for determining whether or not the terminal is inserted into the current connector can be reliably ensured.

As described above, according to the third embodiment, the same operation and effect as those of the above-described embodiments can be obtained, and two sensors can be arranged close to each other. Routing becomes easy.

In addition, with a simple configuration in which two sensor plates are provided near the side of the connector housing, an AC inspection signal value proportional to the distance from the sensor plate to the terminal can be detected. The output of the axis divider circuit 145 and the output of the Y-axis divider circuit 146 are the detection results specific to the terminal insertion position, so the insertion position of the cut piezoelectric wire terminal, which greatly affects the reliability of the wire harness, is set to the terminal. It is possible to perform detection completely without contact. Industrial applicability

According to the present invention, a simple attachment member can be exchanged without designing and preparing a dedicated jig having a complicated configuration for each connector specification at the end of the cut piezoelectric wire. It is possible to determine the improper mounting of the cut piezoelectric wire terminal on various types of connector housings.

Furthermore, in the harness manufacturing process, it is possible to detect the mounting position of the cutting piezoelectric wire terminal in the connector and the connection state between the cutting piezoelectric wire and the terminal without damaging the terminal at the end of the cutting piezoelectric wire. In the manufacturing process of the harness, it is possible to determine the mounting failure of the cutting piezoelectric wire terminal to the connector and to provide a highly reliable harness without going through a special inspection process.

Claims

The scope of the claims

1. A mounting inspection jig used for a terminal mounting inspection apparatus capable of inspecting a mounting position of a terminal to which an AC signal is applied in a connector housing without contacting the terminal,

A holding unit that stores and holds the connector eight housing,

At least one pair of conductive plates disposed opposite the side of the connector housing housed and held in the holding portion and capable of detecting an AC signal from the terminal mounted in the connector housing; ,

The mounting position of the terminal to which the AC signal is applied into the connector housing is determined based on the result of the detection of the AC signal from each of the opposing conductive plates when the terminal to which the AC signal is applied is mounted in the connector housing. A jig for mounting inspection, wherein the jig can be distinguished.

2. A mounting inspection jig used for a terminal mounting inspection device capable of inspecting a mounting position of a terminal to which an inspection signal is applied in a connector housing, wherein the attachment member is capable of storing the connector housing; A holding portion for storing and holding the lock member;

A jig for mounting inspection, comprising: at least a pair of conductive plates disposed on a side surface of the holding portion.

3. The inspection signal is an AC signal, and the conductive plate can detect an AC signal from the terminal mounted in the connector housing,

The attachment member is formed according to a connector housing specification,

3. The mounting inspection jig according to claim 2, wherein the holding portion is common regardless of a connector housing specification.