JP4397222B2 - Mounting inspection jig - Google Patents

Description

  The present invention relates to a mounting inspection jig that can be inspected only by exchanging a part of the jig even if it is a variety of connector housings when inspecting the mounting of a cut piezoelectric wire to which a terminal is fixed in a connector. Is.

  When manufacturing a harness, it is necessary to check whether the harness is assembled correctly. Conventionally, for example, in Patent Document 1, each input terminal of the input terminal group on the inspection apparatus main body side and each connection terminal of each output terminal of the output terminal group are respectively connected to the input side connector on the work panel side and the output side connector, In the memory mode operation prior to the inspection, the connectors at both ends of the model harness are fitted to the input side and output side connectors on the work panel side, and the terminals at both ends of each core wire, which are the specifications of the model harness, and the respective terminal insertion holes of the connector are connected. The insertion state was stored as reference data.

  After that, when the end terminal of the piezoelectric wire to be inspected constituting 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 apparatus main body side The inspection signal is output in sequence, the inspection signal is read from each output terminal of the input side connector, one connector, the piezoelectric wire to be inspected, the other connector, the output side connector, and the output terminal group, and which terminal of the output side connector is inserted The determination of whether or not the inspection signal is input through the terminal in the hole is repeated, and inspection data that is the insertion state of each core wire of the piezoelectric wire to be inspected and each terminal insertion hole of the connector attached to both ends thereof is collected. It was.

  The inspection data obtained in this manner is compared with reference data stored in advance, and it is determined whether or not a defect has occurred in the inspection data.

JP-A-8-146070

  However, in the method of Patent Document 1 described above, it is necessary to inspect the inspection harness by directly contacting the inspection probe from the inspection apparatus to the terminal portions on both the inspection signal supply side and the inspection signal reception side of the inspection harness. A dedicated inspection probe has to be manufactured each time according to the shape of the connector to which the terminal of the cut piezoelectric wire to be configured is attached, and at least a part of the terminal attached to the connector has to be reliably contacted.

In addition, the inspection probe may be deteriorated, worn, or damaged, and the terminal may be deformed.
Furthermore, the miniaturization and high density of the connector have progressed, and the cost of manufacturing a jig adapted to the connector has increased.

  The present invention has been made in view of the above-described problems. With only a simple configuration, the mounting state of the cut piezoelectric wire terminal in the connector can be confirmed, is versatile, and damages the cut piezoelectric wire terminal. In addition, an object of the present invention is to provide an inspection apparatus capable of detecting the mounting position of a cut piezoelectric wire terminal on a connector in a non-contact manner in a harness manufacturing process.

  It is another object of the present invention to provide an inspection apparatus capable of determining a defective mounting of a cut piezoelectric wire terminal to a connector in a harness manufacturing process and providing a highly reliable harness without going through a special inspection process.

  For example, the following configuration is provided as a means for achieving the object.

  That is, a mounting inspection jig for use in a terminal mounting inspection apparatus capable of inspecting the mounting position of a terminal to which an AC signal is applied in the connector housing without contact with the terminal, and holding and holding the connector housing And at least a pair of conductive plates that are disposed to oppose each other in the vicinity of the side surface of the connector housing that is housed and held in the holding portion and that can detect an AC signal from the terminal that is mounted in the connector housing. The mounting position of the terminal to which the AC signal is applied based on the detection result of the AC signal from each of the opposing conductive plates is mounted in the connector housing of the terminal to which the AC signal is applied. It is a mounting inspection jig that makes it possible to discriminate between the two.

  An attachment inspection jig for use in a terminal attachment inspection device capable of inspecting the attachment position of a terminal to which an inspection signal is applied in the connector housing, the attachment member capable of accommodating the connector housing, and the attachment It has a holding part which stores and holds a member, and at least a pair of conductive plates arranged on the side of the holding part.

  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 in accordance with a connector housing specification, and the holding The parts are common regardless of the connector housing specifications.

  Alternatively, there is provided a mounting inspection method in a terminal mounting position inspection apparatus capable of discriminating a mounting position of a terminal to which an AC signal is applied in the connector housing without contact with the terminal, wherein the connector housing is the device according to claim 1 or claim 2. An AC signal from a terminal on which a cut piezoelectric wire to which an AC signal is applied, which is stored in the housing recess via the attachment member of the mounting inspection jig according to Item 2, and which is mounted in the connector housing is mounted. The connector of a terminal attached to a cut piezoelectric wire that is detected by at least a pair of conductive plates provided opposite to each other and to which the AC signal is applied based on a relative detection value of a detection signal from each of the conductive plates. A terminal mounting position confirmation method for determining the mounting position in the housing is provided.

  According to the present invention, it is possible to cut various types of connector housings by simply replacing the attachment member without designing and preparing a dedicated jig having a complicated configuration for each connector specification of the cut piezoelectric wire end. It is possible to determine the mounting failure of the piezoelectric wire terminal.

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

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

  The terminal mounting state confirmation device according to the present embodiment is a device that can determine whether or not the terminal of the correct cut piezoelectric wire is mounted at the correct position of the connector housing without contact with the connector housing and the terminal. By using the form example device, it is possible to determine whether or not the correct cut piezoelectric wire terminal is correctly attached in the connector during the manufacturing process of the harness, and it is not necessary to check the state of attachment to the connector in the subsequent process. .

[First Embodiment]
First, the inspection principle of the terminal mounting state of the terminal mounting state confirmation apparatus to which the present invention is applied will be described with reference to FIG. FIG. 1 is a schematic diagram for explaining the basic principle of a terminal mounting state confirmation device for detecting a mounting state of a cut 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 “connector”) that constitutes an end of a harness to be inspected, and a predetermined position in the connector 10 includes a cut piezoelectric wire 300 having a predetermined specification. One end terminal is inserted to a predetermined depth.

  The cut piezoelectric wire 300 to be attached to the connector is cut in advance to a predetermined length, and a terminal having a predetermined specification to be attached in the connector 10 is fixed to the end by, for example, pressure bonding.

  The connector 10 is housed in the connector housing portion 450 of the connector holding portion 400. Y-axis sensors 20a and 20b and X-axis sensors 30a and 30b, which will be described later, are disposed on the inner wall of the connector storage portion so as to face each other. When the connector 10 is stored in the connector storage portion 450, the connector 10 It is comprised so that it may become a position near the outer wall of a side surface.

  Reference numerals 20a and 20b denote opposite side surfaces of the connector 10 disposed on the inner wall portion of the connector housing portion 450, for example, a Y-axis sensor plate disposed in the vicinity of the inner wall serving as both long side surfaces if the connector 10 is rectangular in top view. , 30a, 30b are X-axis sensors disposed on the other side of the connector 10 disposed on the inner wall of the connector housing 450, for example, in the vicinity of the inner wall on both sides of the short side if the connector 10 is rectangular in top view. It is a board.

  Reference numeral 100 denotes an inspection control unit that controls the inspection apparatus. The inspection control unit 100 is connected to each sensor plate disposed in the connector holding unit 400 through a signal line, and is configured to be able to detect a detection signal from each sensor plate. .

  Since sensor plates (20a, 20b, 30a, 30b) are arranged in the vicinity of each side surface of the connector 10, when a cut piezoelectric wire terminal to which an AC signal is applied is 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 distance between the sensor plates based on the value of the detection signal detected by a pair of opposing sensor plates of the sensor plates (20a, 20b, 30a, 30b). The relative distance between the sensor plate and the terminal with reference to is detected. Thereby, the influence of the level difference (variation in applied inspection signal intensity) of the AC signal applied to the cut piezoelectric wire is reduced.

  The position of the connector 10 in the Y-axis direction (short side direction) is detected by the Y-axis sensors 20a and 20b, and the position of the X-axis direction (long side direction) in the connector 10 is detected by the X-axis sensors 30a and 30b. Thus, the insertion position in the connector 10 of the terminal to which the AC inspection signal is applied can be specified, and it can be detected whether or not the terminal is inserted in the correct position.

  A detailed configuration of the inspection signal processing unit of the inspection 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 of the present embodiment.

  In FIG. 2, reference numerals 111 to 114 denote amplifiers A to D that amplify detection signals from the sensor plates (20a, 20b, 30a, and 30b), and reference numerals 121 to 124 denote detection signals from the sensor plates (20a, 20b, 30a, and 30b). These are peak detection circuits A to D for detecting the peak value.

  Reference numeral 131 denotes an X-axis addition circuit that inputs peak detection signals Vx1 and Vx2 from the X-axis sensors 30a and 30b, adds the detected values to (Vx1 + Vx2), and 132 denotes a peak detection signal Vy1 from the Y-axis sensors 20a and 20b. , Vy2 are input, and the detected value is (Vy1 + Vy2) and added.

  141 receives the output of the X-axis addition circuit 131 and the peak detection signal value from one X-axis sensor plate (for example, 30b), and uses the X-axis addition signal (Vx1 + Vx2) from the X-axis addition circuit 131 as a denominator. This is an X-axis dividing circuit for obtaining {Vx2 / (Vx1 + Vx2)} using the peak detection signal (Vx2) from the X-axis sensor plate (for example, 30b) as a numerator.

  The output of the X-axis dividing circuit 141 represents a relative change in the detection signals of the X-axis sensors 30a and 30b, and even if there is a change in intensity in the AC inspection signal applied to the cut piezoelectric wire, the influence is canceled out. can do. As a result, since the output of the X-axis dividing circuit 141 has a signal level that directly corresponds to the position in the X-axis direction in the connector 10, the cut piezoelectric wire that is mounted in the connector 10 from the output of the X-axis dividing circuit 141. The position of the terminal in the X-axis direction can be detected without contact.

  142 receives an output from the Y-axis addition circuit 132 and a peak detection signal value from one Y-axis sensor plate (for example, 20b), and uses a Y-axis addition signal (Vy1 + Vy2) from the Y-axis addition circuit 132 as a denominator. This is a Y-axis division circuit for obtaining {Vy2 / (Vy1 + Vy2)} using the peak detection signal (Vy2) from one Y-axis sensor plate (for example, 20b) as a numerator.

  The output of the Y-axis dividing circuit 142 represents a relative change in the detection signals of the Y-axis sensors 20a and 20b, and even if there is a change in intensity in the AC inspection signal applied to the cut piezoelectric wire, the influence is canceled out. be able to. As a result, the output of the Y-axis dividing circuit 142 has a signal level that directly corresponds to the position in the Y-axis direction in the connector 10, so that the cut piezoelectric wire mounted in the connector 10 from the output of the Y-axis dividing circuit 142. The position of the terminal in the Y-axis direction can be detected without contact.

  From the output of the X-axis division circuit 141 and the output of the Y-axis division circuit 142, the mounting position (two-dimensional position) of the cut piezoelectric wire terminal in the connector 10 in the XY direction can be detected without contact.

The circuit configuration described above is such that in the X-axis sensor plate and the Y-axis sensor plate, [1 / {(1 / Vn2) + (1 / Vn1)}] / Vn1 where X or Y is n.
= {(Vn1 × Vn2) / (Vn1 + Vn2)} / Vn1
= (Vn2) / (Vn1 + Vn2)
This is because.

  That is, in this embodiment, since the AC inspection signal is detected using 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 cut piezoelectric wire terminal. Become. Accordingly, the reciprocal calculation values (1 / Vx1) and (1 / Vx2) are values proportional to the distance from the cut piezoelectric wire terminal.

  Therefore, the sum {(1 / Vn1) + (1 / Vn2)} is an amount corresponding to the distance (reference distance) between the conductive plates 20a, 20b or 30a, 30b. Therefore, the final amount [1 / {(1 / Vn2) + (1 / Vn1)}] / Vn1 indicates the position of (1 / Vn1) with respect to the reference distance, and the equality fluctuation related to the supply inspection signal. Absorbing minutes. In addition, the result of this ratio is a quantity proportional to the distance and is optimal for use in inspection.

  As shown in FIG. 1, a distance between two conductive plates arranged perpendicular to the connector row direction is set as a reference distance for position measurement (measured value is expressed as a relative value with respect to the reference distance). The reference value includes 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 20b.

  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 to be used. In this embodiment, a tolerance of about 0.1 mm can be sufficiently realized. Position measurement can be performed accurately.

  At the time of actual measurement, the inspection signal detection level detected by the pair of conductive plates differs depending on the terminal mounting position on the connector, but the amplification degree and the offset when processing the inspection signals from the opposing conductive plates are the same. For example, if a peak value is detected, Vx1 and Vx2 can be obtained as DC voltage values. For example, if {Vx2 / (Vx1 + Vx2)} is obtained by an X-axis dividing circuit, the inspection signal supply source terminal mounting position L is obtained. A corresponding voltage value Vxl can be obtained.

  For this reason, even if the level of the inspection signal applied to the cut piezoelectric wire is (1/2) for some reason, all the values of Vx1, Vx2, etc. are only (1/2), which corresponds to the position. The voltage value is not affected.

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

  Note that the arithmetic unit that performs the above-described 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.

  An example of the inspection result in the inspection control unit is shown in FIG. FIG. 3 is a diagram for explaining an example of a detection result in the inspection control unit of the present embodiment.

  In the example of FIG. 3, the terminal holding portion (cavity) of the connector housing has a structure in which six rows of lattice cavities are arranged in two upper and lower stages as shown in FIG. This is an example (unit is “V”) processed by a hardware arithmetic circuit when sequentially inserted from (1, 2).

  Since electrostatic coupling is used to supply the AC inspection signal to the cut piezoelectric wire, the level of the inspection signal cannot be made constant and is expected to vary greatly. Therefore, when the inspection signal of 20 Vp-p is given to the cut piezoelectric wire and when the inspection signal of 10 Vp-p is given, the detection results when the terminal is inserted into each cavity of the connector housing are compared. ing.

  In the example of FIG. 3, the inspection signal detection result when the upper stage gives a test signal of 20 Vp-p and the output example of the division circuit after the operation, the lower stage shows the detection signal detection result when the test signal of 10 Vp-p is given. This is an example of division circuit output after calculation, and even when the inspection signal level given to the cut piezoelectric wire fluctuates greatly as described above, the fluctuation of the division circuit output voltage X1 is less than 4%, A unique detection result is obtained.

  The detection results are shown in Table 1. In Table 1, the vertical axis represents the X voltage calculation value, the horizontal axis represents the terminal insertion row position of the cavity, the terminal insertion position in each of the first to sixth rows, and is shown in the lower part of FIG. The left end is the first column and the right end is the sixth column.

表１における割算器の演算値Xとキャビティ位置の関係を表２に示す。

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

図３の下部に示すように、演算結果とキャビティ位置の関係は上記グラフの通りである。

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

  Since the connector housing has cavities at equal intervals of about 2.5 mm pitch, there is a proportional relationship between the calculated value of X and the cavity position, and it also affects the upper and lower stages of the connector housing shown in Table 2 and the supply voltage. Since the values are almost the same, the cavity into which the terminal is inserted can be specified by the calculated value of X.

  This is exactly the same for the Y-axis sensor plates 20a and 20b, and is a cut piezoelectric wire checker that can obtain a stable detection result even if the inspection signal supplied to the cut piezoelectric wire varies.

  From the above, it is possible to specify the insertion positions in the cavities in the column direction with the X-axis sensor plates 30a and 30b, and specify the insertion positions into the cavities in the row direction with the Y-axis sensor plates 20a and 20b.

  In the inspection apparatus used in the manufacturing process, the connector 10 is positioned and housed in the connector housing portion 450 of the connector holding portion 400 at the cutting piezoelectric wire manufacturing site, and each sensor plate is located near the side surface or near the bottom surface of the connector. There is a need.

For this reason, in this embodiment, the connector holding portion is used to hold the connector and position the sensor plate.

  In the connector holding portion 400 of the present embodiment, each sensor plate is arranged on the side wall portion of the connector storage portion 450, and when the size of the connector is substantially the same as the size of the connector storage portion 450, it is stored as it is. Therefore, a good inspection can be performed. However, the present invention is not limited to this case, and when the size of the connector is smaller than that of the connector housing portion 450, the outer shape is almost the same as the inner volume of the connector housing portion 450, and the connector housing can be housed just at the center. For example, an attachment member made of, for example, resin in which a through hole is formed may be created, and the connector may be accommodated after the attachment member is accommodated in the connector accommodating portion 450.

  FIG. 4 shows an example of an inspection jig for housing the connector housing in the connector housing portion via the attachment member according to this embodiment. In FIG. 4, reference numeral 400 denotes a connector holding portion including a connector storage portion 450 that stores and holds the connector 10 in a positioned state.

  Reference numeral 450 denotes a connector housing portion in which each sensor plate (20a, 20b, 30a, 30b) is disposed on a side surface (not shown in FIG. 4), and a connector housing can be housed therein. When the outer shape of the connector housing is the same as the inner shape of the connector housing 450, the connector housing is housed in the connector housing 450 as it is.

  On the other hand, when the outer shape of the connector housing is smaller than the inner volume (inner shape) of the connector housing portion 450, the outer shape is almost the same as the connector housing portion 450, and the housing space (e.g. The connector housing is accommodated through an attachment member having a through hole or hole). In the following description, an example will be described in which a through hole that is the easiest to manufacture is formed as a housing space for the connector housing.

  460a and 460b in FIG. 4 are attachment members that are loosely fitted in the connector housing portion 450 and house the connector housings 10a and 10b in the central through holes 465a and 465b.

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

  Further, the X-axis sensor plates 30a and 30b and the Y-axis sensor plates 20a and 20b are fixed to the inner wall side surface of the connector storage portion 450 of the connector holding portion 400, respectively, and the connector side surface stored and held in the connector storage portion 450, Or it is comprised so that it may become substantially fixed distance with the connector side surface hold | maintained at attachment member 460a, b.

  Accordingly, the attachment members 460a and 460b are set and held in the connector housing portion 450 of the connector holding portion 400 during the insertion of the cut piezoelectric wire, and the cut piezoelectric wire is attached simply by housing the connector 10 in the attachment members 460a and b. Inspection is possible.

  By providing the above configuration, even when the connector has various sizes and it is necessary to attach the cut piezoelectric wire terminal to the connector of various sizes, when the connector is smaller than the connector housing 450, For example, the low-cost attachment member 460 may be formed by housing the connectors in the attachment members 460a and 460b whose outer shape formed of resin or the like has the shape of the connector housing portion 450, and housing the attachment members 460a and b in the connector housing portion 450. By replacing the connector, it is possible to easily cope with connectors of various specifications, and even in this case, inspection can be performed with high accuracy and reliability.

  In the inspection apparatus using a computer, the terminal insertion position can be processed as coordinate position data. For this reason, even if the specification of the connector housing is changed, it is possible to cope with the change by simply changing the terminal insertion position data (coordinate position data) on the inspection apparatus side.

Also on the jig side, the connector housing is housed in the connector housing part via the attachment member. Therefore, the attachment has a shape that changes the shape of the through hole of the attachment member with a common outer shape in response to changes in the specifications of the connector housing A variety of connector housings can be handled simply by preparing and replacing the members.
Moreover, the attachment member can be easily and quickly prepared by simply forming a through-hole corresponding to the outer shape of the connector housing, in addition to making the outer shape of the connector housing portion, so that the attachment member can be prepared easily and quickly. It is possible to respond quickly to changes in the specifications of the connector housing.

  For this reason, each time the connector specifications were changed, a special jig had to be newly created. By adopting the above configuration, the outer shape was standardized, and the most easily penetrated. An attachment member can be manufactured only by forming a hole, and an inspection jig can be obtained easily and inexpensively in a short period of time.

  The cutting piezoelectric wire terminal mounting control to the connector 10 of the apparatus of the present embodiment having the above configuration will be described below with reference to the flowchart of FIG. FIG. 5 is a flowchart for explaining a mounting inspection method in the terminal mounting position confirmation device for the connector according to the present embodiment.

  5, first, in step S1, the connector 10 is housed in the connector housing portion 450 of the connector holding portion 400 shown in FIG.

  In the present 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, 30b) is connected to each side surface of the connector 10. The connector 10 is positioned so as to be in the vicinity, and the connector 10 is positioned and housed in the connector housing portion 450 to be in an inspectable state described later. For this reason, when the connector 10 is correctly stored, the process may proceed to step S2 and subsequent steps.

  When the connector is positioned, the process proceeds to step S2, and feeding of an alternating current inspection signal having a predetermined frequency (application of the inspection signal) to the cut 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 to prepare a state in which it can be subsequently inspected that the cut piezoelectric wire terminal to which the inspection signal is applied is inserted into the connector.

  Next, in step S4, the inspection control unit 100 is driven, and detection of the terminal insertion position (mounted state) is started. In the inspection control unit 100, the peak detection circuits A to D (121 to 124) start detecting peaks of detection signals from the sensor plates by the operation described above.

  An operator inserts a mounting terminal of a cut piezoelectric wire to which an inspection signal is applied into a predetermined position of the connector and performs a mounting operation. When the mounting operation 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 attachment of the cut piezoelectric wire terminal to the connector ends, the process proceeds to step S5, and the inspection control unit 100 detects that the cut piezoelectric wire terminal to which the AC signal is applied has been inserted into the predetermined connector position. Determine whether or not.

  For example, the detection of mounting is completed when the terminal is mounted in the connector 10 and the position of the mounted terminal does not change for a certain period of time. That is, it can be considered that the terminal insertion is determined to be complete when the detection signal level from each sensor plate (20a, 20b, 30a, 30b) is not less than a certain level and does not change for a certain period of time. In addition, it may be determined that the installation is completed by the operator turning on the switch.

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

  Then, the measurement detection result on the X-axis sensor plate detected in the inspection mode and the measurement detection result on the Y-axis sensor plate are compared with the reference measurement value, and the connector position where the terminal is inserted is determined from these measurement detection results. ing.

  For example, the determination of the insertion position is performed by comparing the detection result when the correct cut piezoelectric wire terminal is inserted into an accurate position in advance with the detection result when the operator attaches the cut piezoelectric wire terminal, and the error is predetermined. If it is within the range, it is determined to be normal. In the present embodiment, when the sensor is not mounted in the normal position, the detection signal from each sensor plate (20a, 20b, 30a, 30b) is different from the normal one. If it is not detected that the cut piezoelectric wire terminal has been inserted into a predetermined connector position, the process proceeds to step S6 to identify the cause of the failure.

  In the determination of the insertion position in the above description, the detection result when the correct cut piezoelectric wire terminal is inserted into the accurate position in advance is compared with the detection result when the operator inserts the cut piezoelectric wire terminal. Instead of this, it may be checked whether the insertion is good or not by comparing the calculated terminal insertion position derived from the detection result with the accurate position.

  For example, when the insertion of the terminal could hardly be detected, the inspection signal is not supplied, the cut piezoelectric wire terminal that should not be attached is attached, or the terminal portion and the cut piezoelectric wire portion are not connected (disconnected) ).

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

  Upon receiving this error notification, the worker performs necessary error processing. For example, when the insertion position is incorrect or the cut piezoelectric wire terminal is deformed, the inserted cut piezoelectric wire terminal is removed, and another new cut piezoelectric wire terminal is inserted into the connector 10.

  On the other hand, if the inspection control unit 100 detects in step S5 that the cut piezoelectric wire terminal to which the AC signal is applied has been inserted into a predetermined connector position, the process proceeds to step S10, where the connector 10 is connected to the connector 10. It is determined whether or not all of the cut piezoelectric wire terminals have been attached. When all the mounting of the cut piezoelectric wire terminals to the connector 10 is completed, this is notified by, for example, an end sound, and the mounting of the terminals to the connector is terminated.

  If it is determined in step S10 that all the cut piezoelectric wire terminals have not been attached to the connector 10, the process proceeds to step S15, where the next cut piezoelectric wire terminal to be attached and the storage position in the connector 10 are specified. Proceed to

  As described above, according to the present embodiment, only the sensor plate is disposed opposite to the vicinity of each side wall of the connector housing, without touching the cut piezoelectric wire terminals attached to the connector housing, It is possible to detect the mounting position on the connector in the process of mounting the cut piezoelectric wire terminal to the connector housing, and to detect the occurrence of defective products in the manufacturing process, making it possible to manufacture the cut piezoelectric wire efficiently. Become.

  In this embodiment, since the insertion position of the terminal can be inspected simply by housing the connector in the connector housing portion, the harness specification is changed, and even if the connector specification is changed, the connector is not connected to the connector. It is enough if it can be stored in the storage section, and even if the connector specification changes, it can be handled with only a slight change of changing the attachment member, and it is necessary to manufacture all jigs every time the connector specification changes as before Disappear.

  In addition, there is no need to bring the inspection probe into contact with the terminals, and there is no need for inspection probe terminals corresponding to the number of connector attachment terminals. Even if the number of attachment terminals to the connector increases, a large number of signal lines from the inspection device to the inspection probe can be obtained. The terminal mounting state in the connector can be inspected with only four signal lines connected to the sensor plate.

Furthermore, according to the present embodiment, since the inspection result of the mounting state of the cut piezoelectric wire terminal to the connector housing is recognized as the detection coordinate data in the connector holding portion, for example, even if the connector specification is changed The connector position can be defined as new coordinate data. As a result, for example, only by rewriting the coordinate data of the inspection device in correspondence with the connector specification, it is possible to cope with the change in the specification of the connector to be inspected, thereby realizing a very versatile inspection device. Even in this case, the inspection jig side needs only a slight change of changing the attachment member, and can respond to various connector specifications quickly and easily.
[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, the present invention may be configured to include two or more storage spaces for storing two or more connectors in one attachment member. Or you may accommodate a connector in each attachment member as a structure which accommodates two or more attachment members in the connector storage part of a connector holding part. As described above, the terminal insertion state into two or more connectors may be inspected.

  A second embodiment of the present invention in which a plurality of connectors are housed in the connector housing portion of the connector holding portion will be described with reference to FIG. FIG. 6 is a view for explaining an attachment member according to a second embodiment of the present invention. In the following description, a case where two connectors are housed in the connector housing portion of the connector holding portion will be described as an example. It is clear that even if there are two or more, the same inspection can be performed.

  Also in the second embodiment, the configuration other than the attachment member is the same as that of the first embodiment described above, and the following description will be made with respect to a configuration different from the first embodiment described above. A description of the configuration other than the storage portion and the attachment member is omitted.

  6A shows an example in which two connectors are accommodated in the attachment member, and FIG. 6B shows an example in which two attachment members are accommodated in the connector accommodating portion.

  In FIG. 6, the attachment member 460c shown in FIG. 6A is provided with two connector storage spaces (connector storage hole portions) 465c and 465d as attachment members stored in the connector storage portion 450. It is stored in the connector storage spaces 465c and 465d.

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

  In the inspection control unit 100 for inspecting the mounting of the cut piezoelectric wire terminal to which the inspection signal is supplied into the connector housing, based on the value of the detection signal detected by a pair of opposing sensor plates of the sensor plates, Since the relative distance between the sensor plate and the terminal is detected based on the distance between the sensor plates, a test result that is not affected at all by the number of connectors or the like can be obtained.

  As described above, according to the second embodiment, it is possible to inspect the insertion state of the terminals inserted into each of two or more connectors by one set of terminal position inspection devices.

[Third Embodiment]
Furthermore, in the embodiment described above, the example in which the X-axis or Y-axis sensor plate is disposed so as to face each other across the connector housing has been described. However, the present invention is not limited to the above example, and the two sensor plates may be positioned close to each other so as to be substantially parallel to each other on one side surface of the connector housing portion.

  For example, by attaching sensor plates to both surfaces of a sheet-like insulating material and disposing them on the inner wall surface of one side surface of the connector housing portion, the two sensor plates are separated from each other by a certain distance on one side surface of the connector housing portion. What is necessary is just to position and arrange so that it may become substantially parallel.

  In addition, the arrangement | positioning method of a sensor board is not limited to the above example, You may be embedded in the side wall, or when using an attachment member, you may stick to the side wall of an attachment member, respectively. .

  FIG. 7 shows the inspection principle of the inspection apparatus according to the third embodiment in which two sensor plates are positioned close to each other on one side of the connector housing portion so as to be substantially parallel to each other with a certain distance therebetween. Will be described below. FIG. 7 is a diagram for explaining the detailed configuration of the inspection signal processing unit of the inspection control unit according to the third embodiment.

  7, 20c and 20d are Y-axis sensor plates, 30c and 30d are X-axis sensor plates, and 111 to 114 are amplifiers A to D and 121 for amplifying detection signals from the sensor plates (20c, 20d, 30c, and 30d). Reference numerals to 124 denote peak detection circuits A to D for detecting peak values of detection signals from the sensor plates (20c, 20d, 30c, 30d).

  Reference numeral 135 denotes an X-axis subtraction circuit that receives detection peak signals from the X-axis sensors 30c and 30d and outputs a difference (Vx1-Vx2). Reference numeral 136 denotes a Y-axis subtraction circuit that receives detection peak signals from the Y-axis sensors 20c and 20d and outputs a difference (Vy1-Vy2).

  X axis 145 obtains {Vx2 / (Vx1−Vx2)} using the X axis difference signal (Vx1−Vx2) from the X axis subtraction circuit 135 as the denominator and the detection signal (Vx2) from the X axis sensor 30d as the numerator. It is a division circuit.

  The output of the X-axis dividing circuit 145 represents the relative change in the detection signals of the X-axis sensors 30c and 30d, and cancels the influence of the change in the intensity of the signal applied (powered) to the cut piezoelectric wire from the power feeding unit. can do.

As a result, the output of the X-axis dividing circuit 145 has a signal level proportional to the distance between the terminal of the cut piezoelectric wire and each of the X-axis sensors 30c and 30d. Whether or not it is inserted at the correct X-axis position can be detected without contact.

  Reference numeral 146 denotes a Y-axis for obtaining {Vy2 / (Vy1-Vy2)} using the Y-axis difference signal (Vy1-Vy2) from the Y-axis subtraction circuit 136 as a denominator and the detection signal (Vy2) from the Y-axis sensor 20d as a numerator. It is a division circuit.

  The output of the Y-axis dividing circuit 146 represents the relative change in the detection signals of the Y-axis sensors 20c and 20d, and cancels the influence of the change in the intensity of the signal applied (powered) to the cut piezoelectric wire from the power feeding unit. can do.

As a result, the output of the Y-axis divider circuit 146 has 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. Whether or not the Y-axis is correctly inserted can be detected without contact.

  From the output of the X-axis dividing circuit 145 and the output of the Y-axis dividing circuit 146, the mounting position (two-dimensional position) of the cut piezoelectric wire terminal in the connector 10 in the XY direction can be detected without contact.

The circuit configuration described above is that in the X-axis sensor plate and the Y-axis sensor plate, [1 / {(1 / Vn2) − (1 / Vn1)}] / Vn1 where X or Y is n.
= {(Vn1 * Vn2) / (Vn1-Vn2)} / Vn1
= (Vn2) / (Vn1-Vn2)
This is because.

  In the third embodiment, the X-axis sensor 30d and the Y-axis sensor 20d are located on the back side of the X-axis sensor 30c and the Y-axis sensor 20c as viewed from the connector side, but the connector 10 is formed of a non-conductive material. In addition, since both the X-axis sensors 30c and 30d and the Y-axis sensors 20c and 20d are maintained in a high impedance state, the detected value of the AC signal from the terminals of the X-axis sensor 30d and the Y-axis sensor 20d is Even if the influence of the X-axis sensor 30c and the Y-axis sensor 20c is somewhat, the influence of the AC signal from the terminal is not blocked by the X-axis sensor 30c and the Y-axis sensor 20c, and a certain level value is ensured. It can be detected.

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

  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 if the detection level of the Y-axis sensor 20d is slightly lowered, a certain level value can be reliably detected.

  This is the same even when the terminal to be inserted into the connector 10 is not the first terminal. When some terminals are already mounted in the connector 10, the positions of the mounted terminals and Even if the detection level on the sensor plate varies depending on the number, whether or not the terminal insertion position in each case is correct can be accurately identified.

  That is, in the third embodiment, since the AC inspection signal is detected using electrostatic coupling, the detection level of the inspection signal from the conductive plate is inversely proportional to the distance from each inserted terminal. Value. Accordingly, the reciprocal calculation values (1 / Vn1) and (1 / Vn2) are values proportional to the distance from the terminal.

  Therefore, these differences {(1 / Vn1) − (1 / Vn2)} 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 / Vn1) − (1 / Vn2)}] / Vn1 represents the ratio of (1 / Vn1) to the reference distance, and absorbs the equal rate variation related to the supply inspection signal. ing. The result of this ratio is a quantity proportional to the distance and is optimal for use in inspection.

  As a result, the outputs of the X-axis dividing circuit 145 and the Y-axis dividing circuit 146 when the terminal is inserted 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 very small, and the accuracy required for determining whether the terminal is inserted into the current connector can be ensured.

  As described above, according to the third embodiment, the same operational effects as the above-described embodiments can be obtained and two sensors can be disposed close to each other. It can be easily routed.

  In addition, with a simple configuration in which two sensor plates are arranged in the vicinity of the side surface of the connector housing, an AC inspection signal value proportional to the distance from the sensor plate to the terminal can be detected, and the X axis when the terminal is inserted Since the outputs of the dividing circuit 145 and the Y-axis dividing circuit 146 are detection results specific to the insertion position of the terminal, the insertion position of the cut piezoelectric wire terminal, which has a great influence on the reliability of the wire harness, is completely applied to the terminal. It becomes possible to detect without contact.

It is a schematic diagram for demonstrating the basic principle of the mounting state confirmation apparatus of the terminal which detects the cutting piezoelectric wire terminal mounting state to the connector of the embodiment of one invention concerning this invention. It is a figure for demonstrating the detailed structure of the test | inspection signal process part of the test | inspection control part of this Embodiment. It is a figure which shows the example of a detection in the test | inspection control part of this Embodiment.

It is a schematic diagram for demonstrating the structural example of the connector holding part of this embodiment. It is a flowchart for demonstrating the mounting inspection method in the terminal mounting state confirmation apparatus with respect to the connector of the example of this embodiment. It is a figure explaining the attachment member of the example of a 2nd embodiment concerning the present invention.

It is a figure for demonstrating the detailed structure of the test | inspection signal process part of the test | inspection control part of the 3rd Example which concerns on this invention.

Explanation of symbols

10 Connector housing (connector)
20a, 20b, 20c, 20d X-axis sensor 30a, 30b, 30c, 30d Y-axis sensor 100 Inspection control unit 111-114 Amplifiers A-D
121-124 Peak detection circuits A-D
131 X-axis adder circuit 132 Y-axis adder circuit 135 X-axis subtractor circuit 136 Y-axis subtractor circuit 141, 145 X-axis divider circuit 142, 146 Y-axis divider circuit 300 Cutting piezoelectric wire 400 Connector holding portion 450 Connector housing portion 460 Attachment Member 465 Connector storage space (connector storage hole)

Claims (3)

A mounting inspection jig for use in a terminal mounting inspection apparatus capable of inspecting the mounting position of the terminal to which the AC signal is applied in the connector housing without contact with the terminal,
A holding portion for storing and holding the connector housing;
And at least a pair of conductive plates that are disposed opposite to a position in the vicinity of the side surface of the connector housing that is housed and held in the holding portion, and that can detect an AC signal from the terminal mounted in the connector housing,
The mounting of the terminal to which the AC signal is applied in the connector housing is detected by the AC signal detection result corresponding to the distance from the terminal detected from each of the opposing conductive plates. A mounting inspection jig characterized in that a mounting position in a connector housing can be determined. A mounting inspection jig used in a terminal mounting inspection apparatus capable of inspecting a mounting position of a terminal to which a test signal composed of an AC signal is applied in a connector housing,
An attachment member capable of storing the connector housing;
A holding portion for storing and holding the attachment member;
Having at least a pair of conductive plates cast on the side surface of the holding portion ;
A mounting inspection jig, wherein the conductive plate detects an AC signal corresponding to a distance from the terminal mounted in a connector housing . Before SL attachment member is formed to fit the connector housing specifications,
The mounting inspection jig according to claim 2, wherein the holding city is common regardless of connector housing specifications.

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