JP2007109563A - Insertion prevention device of flexible printed circuit board, and insertion nonconformity preventing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply and surely prevent incorrect insertion of a flexible printed circuit board into a connector. <P>SOLUTION: In this flexible printed circuit board 1, an extension 2 is formed on both sides and at near each side of the insertion direction of a terminal 3, and a vacuum suction hole 10 is formed at a position on a hard printed circuit board 12 and a stage base, corresponding to each extension 2 on the flexible printed circuit board 1 of which the terminal 3 is inserted into a connector 8. When the flexible printed circuit board 1 is inserted shallow degree or with a tilt into the corrector 8, vacuum leakage will occurs, because the vacuum suction hole 10 is not closed completely with the extension 2, then since the degree of vacuum does not satisfy the preset level of a vacuum pressure sensor, the degree of vacuum on the stage base will not be released. Consequently, the hard printed circuit board 12 cannot be removed from the stage base. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus for preventing erroneous insertion of a flexible printed circuit board and to prevent erroneous insertion, which prevents erroneous insertion including connection failure due to incomplete insertion when the flexible printed circuit board is inserted and connected to a connector mounted on a rigid printed circuit board. Regarding the method.

  In the assembly of electronic equipment, printed circuit boards that have electronic circuits formed by connecting electronic parts by soldering, etc., frame parts that determine the structure for holding the printed circuit board in place, and exteriors of electronic equipment that contain various parts It is required to perform an assembling operation that sequentially assembles the casing parts and other functional parts to be assembled according to a predetermined procedure and a predetermined standard.

  This assembling work may be performed manually by an operator or may be performed using an automation device such as an industrial robot.

  Assembling work using an automation device is more reliable than manual work and has no human-like fatigue, and therefore can be carried out at a constant speed and continuously. In addition, there are advantages such as work requiring accuracy that cannot be obtained by human work, and work on heavy objects and large parts that cannot be held by humans.

  On the other hand, even with the introduction of automated equipment, there are cases where it is not possible to make a return on investment, and because it is difficult to change models in today's era where high-mix low-volume production is required, it is said that the manufacturing flexibility is poor. There is also a problem. Furthermore, there are also precise operations that can only be performed with human fingers, such as complicated assembly of micro parts.

  As described above, in assembling an electronic device, not all operations are automated, and manual operations by an operator are also performed.

  The problem due to manual work by the worker is that it is difficult to completely eliminate work mistakes due to the worker's assumptions and lack of attention.

  Looking at the connector connection work that is performed to connect a plurality of printed circuit boards and parts electrically through the connector during manual work, when inserting the printed circuit board into the connector, the insertion is shallow or oblique insertion, etc. A connection failure occurs due to a work failure.

  Another problem is that, when a plurality of connectors are arranged on one printed circuit board, a printed circuit board corresponding to each connector is inserted and another printed circuit board is erroneously inserted where it should be connected. Incorrect connection occurs.

  In order to solve such a problem, for example, in Patent Document 1 and Patent Document 2, an engagement hole or a protrusion is provided in a terminal portion into which a flexible printed circuit board is inserted, and it is swingable to lock a connector connection. By providing a protrusion on the slider, and only when the flexible printed board is correctly inserted into the connector, the protrusion provided on the slider is configured to lock to the engagement hole or protrusion provided on the flexible printed board. A technique for preventing an insertion failure of a flexible printed board into a connector is disclosed.

  Patent Document 3 discloses an identification notch provided on the flexible printed circuit board only when the identification cutout is provided outside the terminal portion into which the flexible printed circuit board is inserted and the flexible printed circuit board is correctly inserted into the connector. A technique is disclosed in which a notch is configured to be hidden behind a slider for locking a connector connection, thereby enabling visual inspection and preventing a flexible printed board from being inserted into a connector.

Furthermore, Patent Document 4 discloses a technique for preventing an erroneous connection of a connector by performing an external display corresponding to the incorrect connection of the connector or when the connector is properly connected.
Japanese Utility Model Publication No. 3-12890 JP 2001-291979 A Japanese Utility Model Publication No. 5-94968 JP-A-8-185930

  However, the techniques disclosed in Patent Document 1 and Patent Document 2 require the use of a special connector having protrusions on the slider portion, and a commercially available general connector cannot be used. For this reason, there is a problem in versatility in addition to an increase in cost as a custom connector.

  In addition, the technique disclosed in Patent Document 3 relies on visual inspection by an operator to prevent insertion failure in a connector, and there is a problem that insertion failure due to carelessness of the operator cannot be completely prevented. It was.

  Further, since the technique disclosed in Patent Document 4 only displays an erroneous connection, there is a problem that an erroneous connection due to carelessness of an operator cannot be completely prevented.

  The present invention was devised to solve such problems, and an object of the present invention is to prevent an erroneous insertion prevention device for a flexible printed circuit board and an erroneous insertion that can easily and surely prevent a flexible printed circuit board from being inserted into a connector. It is to provide a prevention method.

  In order to solve the above-described problems, the device for preventing erroneous insertion of a flexible printed circuit board according to the present invention prevents connection failure due to erroneous insertion when a terminal portion of the flexible printed circuit board is inserted and connected to a connector mounted on a rigid printed circuit board. Protrusions are provided on both sides or one side of the flexible printed circuit board along the insertion direction in the vicinity of the terminal section, and the rigid printed circuit board and a stage base that vacuum-sucks the rigid printed circuit board are provided. Is provided with a vacuum suction hole at a position corresponding to the protruding portion of the flexible printed circuit board in which the terminal portion is inserted into the connector. Further, the vacuum exhaust system of the vacuum suction mechanism includes a vacuum pressure sensor, an exhaust valve, and a vacuum breaking valve that detect whether the vacuum suction of the protrusions provided on the flexible printed circuit board is complete or whether a vacuum leak has occurred. And. And when the terminal portion of the flexible printed circuit board is inserted and connected to the connector in a state where the rigid printed circuit board is positioned and fixed to a stage base having a vacuum suction mechanism, based on the detection result of the vacuum pressure sensor, When the vacuum suction of the protrusions is complete, the vacuum print fixing of the hard printed circuit board is released, and when the vacuum leakage occurs, the vacuum print fixing of the hard printed circuit board is maintained.

  With the above configuration, when the terminal portion of the flexible printed circuit board is completely inserted and connected to the connector, the vacuum suction fixing is released, so that the hard printed circuit board can be taken out from the stage base.

  On the other hand, when the terminal portion of the flexible printed circuit board is incompletely inserted into the connector, the vacuum suction fixation is not released, and thus the hard printed circuit board cannot be taken out from the stage base. As a result, the operator notices that the terminal portion of the flexible printed circuit board is not completely inserted into the connector, so that the flexible printed circuit board is reinserted. That is, it is possible to reliably prevent erroneous connector connection due to carelessness of the operator.

  In addition, the device for preventing erroneous insertion of a flexible printed circuit board according to the present invention prevents connection failure due to erroneous insertion when a flexible printed circuit board corresponding to each connector is inserted and connected to a plurality of connectors mounted on a rigid printed circuit board. The flexible printed circuit board is provided with protrusions on both sides or one side of the side along the insertion direction in the vicinity of the terminal part, and the hard printed circuit board and a stage base that vacuum-sucks the hard printed circuit board Are provided with vacuum suction holes at positions corresponding to the protruding portions of the flexible printed circuit boards in which the terminal portions are inserted into the connectors. Further, the vacuum exhaust system of the vacuum suction mechanism includes a vacuum pressure sensor, an exhaust valve, and a vacuum breaking valve that detect whether the vacuum suction of the protrusions provided on the flexible printed circuit board is complete or whether a vacuum leak has occurred. And. Then, when the terminal portion of each flexible printed circuit board is inserted and connected to each connector in a state where the rigid printed circuit board is positioned and fixed to a stage base having a vacuum suction mechanism, the vacuum suction of each projection is performed. When it is complete, the vacuum print fixing of the hard printed circuit board is released, and when a vacuum leak occurs, the vacuum print fixing of the hard printed circuit board is maintained.

  With the above configuration, when the terminal portion of the flexible printed circuit board is completely inserted and connected to the connector, the vacuum suction fixing is released, so that the hard printed circuit board can be taken out from the stage base.

  On the other hand, when the terminal portion of the flexible printed circuit board is incompletely inserted into the connector, the vacuum suction fixation is not released, and thus the hard printed circuit board cannot be taken out from the stage base. As a result, the operator notices that the terminal portion of the flexible printed circuit board is not completely inserted into the connector, so that the flexible printed circuit board is reinserted. That is, it is possible to reliably prevent a connector connection failure due to carelessness of the operator.

  In addition, the apparatus for preventing erroneous insertion of a flexible printed circuit board according to the present invention may be configured such that the formation positions of the protrusions provided on both sides of the flexible printed circuit board are different in the insertion direction. With such a configuration, when the flexible printed circuit board is inserted into the connector with the front and back turned upside down, the position of the protrusion on each side and the position of the corresponding vacuum suction hole will shift, resulting in a vacuum leak. become. In this case, since the vacuum print fixing of the hard printed circuit board is maintained, the hard printed circuit board cannot be taken out from the stage base. As a result, the operator notices that the terminal portion of the flexible printed circuit board is erroneously inserted into the connector (inserted upside down), so the flexible printed circuit board is reinserted. That is, it is possible to reliably prevent erroneous insertion of the connector due to carelessness of the operator.

  In addition, when multiple connectors are mounted on a rigid printed circuit board, the formation positions in the insertion direction of the protrusions provided on both sides of the flexible printed circuit board are different for each flexible printed circuit board. May be. With such a configuration, when one flexible printed circuit board is inserted into a different connector, the position of the protrusion and the position of the vacuum suction hole are shifted, and thus vacuum leakage occurs. In this case, since the vacuum print fixing of the hard printed circuit board is maintained, the hard printed circuit board cannot be taken out from the stage base. As a result, the operator notices that the flexible printed circuit board has been inserted into an incompatible (wrong) connector, and the flexible printed circuit board is reinserted. That is, it is possible to reliably prevent erroneous insertion of the connector due to carelessness of the operator.

  The method for preventing erroneous insertion of a flexible printed circuit board according to the present invention is a method for preventing connection failure due to erroneous insertion when a terminal portion of a flexible printed circuit board is inserted and connected to a connector mounted on a rigid printed circuit board. The flexible printed circuit board is provided with protrusions on both sides or one side of the side along the insertion direction in the vicinity of the terminal part. The hard printed circuit board and a stage base for vacuum-adsorbing the hard printed circuit board are connected to the connector. A vacuum suction hole is provided at a position corresponding to the protruding portion of the flexible printed board into which the terminal portion is inserted, and the hard printed board is positioned and fixed on the stage base having a vacuum suction mechanism. When the terminal portion of the flexible printed circuit board is inserted and connected to the connector, the vacuum suction of the protruding portion is completed. And if the result of the determination is that the vacuum suction of the protrusions is complete, release the vacuum suction fixation of the hard printed circuit board, and if there is a vacuum leak, And maintaining the vacuum suction fixation of the printed circuit board. As a result, the operator notices that the terminal portion of the flexible printed circuit board is not completely inserted into the connector, so that the flexible printed circuit board is reinserted. That is, it is possible to reliably prevent erroneous connector connection due to carelessness of the operator.

  Also, the method for preventing erroneous insertion of a flexible printed circuit board according to the present invention prevents a connection failure due to erroneous insertion when a flexible printed circuit board corresponding to each connector is inserted and connected to a plurality of connectors mounted on a rigid printed circuit board. The flexible printed circuit board is provided with protrusions on both sides or one side of the side along the insertion direction in the vicinity of the terminal portion, and the rigid printed circuit board and a stage base that vacuum-sucks the rigid printed circuit board Are provided with vacuum suction holes at positions corresponding to the protrusions of the respective flexible printed circuit boards in which the terminal portions are inserted into the respective connectors, and the hard printed circuit board has a vacuum suction mechanism. The terminal portion of each flexible printed circuit board is connected to each connector while being positioned and fixed to A step of determining whether or not the vacuum suction of each projection is complete when each of the projections is inserted and connected; and if the result of the determination is that the vacuum suction of each projection is complete, the rigid printed circuit board And releasing the vacuum suction fixation, and maintaining a vacuum suction fixation of the hard printed circuit board when a vacuum leak occurs. As a result, the operator notices that the terminal portion of the flexible printed circuit board is not completely inserted into the connector, so that the flexible printed circuit board is reinserted. That is, it is possible to reliably prevent a connector connection failure due to carelessness of the operator.

  Since the present invention is configured as described above, connection failure due to incomplete insertion or erroneous insertion when a flexible printed board is inserted into and connected to a connector mounted on a rigid printed board is sacrificed at the sacrifice of the versatility of the connector. In addition, it is possible to reliably prevent the occurrence of carelessness of the operator. Thereby, the fall of manufacturing quality can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
1A and 1B are partially enlarged views showing the vicinity of a terminal portion 3 of a flexible printed circuit board 1 according to the erroneous insertion prevention device of Embodiment 1, wherein FIG. 1A is a plan view and FIG. 1B is a cross-sectional view.

  This flexible printed circuit board 1 is provided with protrusions 2 and 2 at symmetrical positions on both sides along the insertion direction Y in the vicinity of the terminal portion 3. In the first embodiment, as an example, main dimensions assuming a flexible printed circuit board 1 having 40 terminals 3a, 3a,... With a pitch of 0.5 mm are shown in FIG. The dimension A in the figure can be arbitrarily determined with a dimension equal to or greater than (opening dimension of the cover film + one half of the protrusion width dimension). Moreover, the dimension of the projection part 2 can also be arbitrarily determined within a range in which the vacuum suction described later can be detected.

  The structure of the flexible printed circuit board 1 will be described with reference to FIG. 1B. A wiring pattern 5 is formed by pasting and patterning a copper foil on a base material 4 made of a polyimide film or the like. On the pattern 5, only the terminal portion 3 is opened and a cover film 6 made of a polyimide film or the like is attached with an adhesive. Further, in order to ensure the strength of the connector insertion portion, a reinforcing plate 7 made of polyethylene terephthalate, glass epoxy material, or the like is attached to the lower surface side of the substrate 4 with an adhesive.

  FIG. 2 is a partially enlarged perspective view showing the hard printed circuit board 12 according to the erroneous insertion preventing apparatus of the first embodiment.

  The hard printed circuit board 12 is provided with a connector 8 provided with a slider 9 that can be opened and closed in the directions of arrows X1 and X2 in the figure, and the flexible printed circuit board 1 (see FIG. Vacuum suction holes 10 and 10 for vacuum suction of the projections 2 and 2 (shown by a two-dot chain line in the middle) are provided penetrating in the vertical direction.

  In order to insert and connect the flexible printed circuit board 1 to the connector 8, first, the slider 9 of the connector 8 is opened in the direction of the arrow X1 in the figure, and after inserting the terminal portion 3 of the flexible printed circuit board 1 into the connector 8, the slider 9 May be closed in the direction of the arrow X2 in the figure. At this time, when the insertion of the flexible printed circuit board 1 into the connector 8 is complete (in the insertion state shown by a two-dot chain line in FIG. 2), the protrusion 2 provided on the flexible printed circuit board 1 The arrangement positions of the protrusions 2 and the vacuum suction holes 10 are set so as to completely cover the corresponding vacuum suction holes 10 provided on the substrate 12. Note that the shape of the vacuum suction hole 10 must be at least smaller than the vertical and horizontal widths of the protrusion 2, but if it is too small, it is detected when the flexible printed circuit board 1 is inserted slightly obliquely. Since there is a possibility that it cannot be performed, what kind of shape should be determined may be determined in consideration of the detection accuracy.

  FIG. 3 is a perspective view showing the structure of the stage base 11 on which the hard printed circuit board 12 according to the first embodiment of the present invention is placed and fixed.

  A plurality of positioning pins 13, 13... For contacting the two adjacent sides of the hard printed circuit board 12 on the upper surface of the stage base 11 and correctly positioning the hard printed circuit board 12 on the mounting portion 11 a. -Is provided, and a vacuum suction hole 14 for vacuum-sucking the hard printed circuit board 12 is provided at the center of the mounting portion 11a.

  Further, the stage base 11 is also provided with a vacuum suction hole 15 at a position facing the vacuum suction hole 10 of the rigid printed circuit board 12 positioned by the positioning pins 13, 13.

  FIG. 4 is an explanatory diagram showing an example of the vacuum exhaust wiring structure of the stage base 11.

  An exhaust valve 18 and a vacuum breaker valve 19 are disposed in a pipe portion between the vacuum suction holes 14 and 15 on the stage base 11 and the vacuum pump 16, and a vacuum pressure sensor 17 is further disposed.

  The detection output of the vacuum pressure sensor 17 is input to the control unit 20. The control unit 20 controls the driving of the vacuum pump 16 based on the operation signal of the work start switch 20a, and controls the opening and closing of the exhaust valve 18 and the vacuum breaker valve 19 based on the detection output of the vacuum pressure sensor 17. It is like that.

  Next, the processing operation when the flexible printed circuit board 1 is inserted and connected to the connector 8 in the erroneous insertion preventing apparatus having the above configuration will be described with reference to the flowchart shown in FIG.

  First, the operator positions and fixes the hard printed circuit board 12 to the placement site 11a on the stage base 11 (step S101). Subsequently, when the operator presses the work start switch 20a (step S102), the control unit 20 controls to close the vacuum break valve 19 (step S103), and then controls to open the exhaust valve 18 (step S103). Step S104). Thereby, since the hard printed circuit board 12 on the stage base 11 is fixed, the operator inserts the flexible printed circuit board 1 into the connector 8 mounted on the hard printed circuit board 12 (step S105), and closes the slider 9. Connecting.

  At this time, the vacuum pressure sensor 17 monitors a preset value of the ultimate degree of vacuum (step 106). For example, when the flexible printed circuit board 1 is shallowly inserted as shown in FIG. When the flexible printed circuit board 1 is inserted obliquely as shown in FIG. 3, the vacuum suction hole 10 is not completely blocked by the projection 2 and a vacuum leak occurs, and the degree of vacuum is set by the vacuum pressure sensor 17. Not a value. Therefore, in such a case, the control unit 20 maintains the current operation state of each valve, and the vacuum state on the stage base 11 is not released, so that the hard printed circuit board 12 on the stage base 11 cannot be taken out. . Accordingly, the operator reinserts the flexible printed circuit board 1 (step 107).

  On the other hand, when the flexible printed circuit board 1 is completely inserted, the projections 2 and 2 provided on the flexible printed circuit board 1 completely block the vacuum suction holes 10 and 10 as shown in FIG. The degree reaches the set value of the vacuum pressure sensor 17. Therefore, the control unit 20 controls to close the exhaust valve 18 (step S108), and then controls to open the vacuum break valve 19 (step S109). Thereby, since fixation of the hard printed circuit board 12 on the stage base 11 is cancelled | released, the operator can take out the hard printed circuit board 12 from the stage base 11 (step S110).

  FIG. 8 shows a modification of the flexible printed circuit board 1, the hard printed circuit board 12, and the stage base 11 according to the first embodiment.

  The flexible printed circuit board 1 shown in FIG. 2 is provided with the protrusions 2 and 2 at symmetrical positions. However, in this modification, the formation positions of the protrusions 2 and 2 are different in the insertion direction Y of the flexible printed circuit board 1. It is shifted so that it is in the position. In accordance with this, the vacuum suction holes 10 and 10 provided in the rigid printed board 12 and the vacuum suction holes 15 and 15 provided in the stage base 11 are also different from each other in the insertion direction Y of the flexible printed board 1. It is configured to be shifted as much as possible. In this way, the pair of protrusions 2 of the flexible printed board 1, the pair of vacuum suction holes 10, 10 of the rigid printed board 12, and the pair of vacuum suction holes 15, 15 of the stage base 11 are inserted into the flexible printed board 1. By providing it with a shift from the direction Y, it is possible to detect even when the flexible printed circuit board 1 is inserted into the connector 8 with the front and back sides reversed. In other words, in addition to incomplete insertion and oblique insertion of the flexible printed circuit board 1, it is possible to prevent erroneous insertion when the front and back are reversed.

  In the first embodiment, the protrusions 2 are described as being provided on both the left and right sides of the flexible printed circuit board 1. However, the protrusions 2 may be provided only on one side.

<Embodiment 2>
FIG. 9 is a partially enlarged perspective view showing the hard printed circuit board 12 according to the erroneous insertion prevention device of the second embodiment. The structure of the flexible printed board is the same as that of the first embodiment shown in FIG.

  In the second embodiment, two connectors 22 and 23 are mounted on the hard printed circuit board 21. Here, formation of the insertion direction Y of the protrusions 26 and 27 provided on the flexible printed boards 24 and 25 (indicated by the two-dot chain lines in the figure) inserted and connected to the connectors 22 and 23, respectively. The positions are provided so that the positions of the flexible printed boards 24 and 25 are different.

  Further, each vacuum suction hole 28 for vacuum-sucking the protrusions 26 and 27 of the flexible printed boards 24 and 25 at the left and right symmetrical positions on the insertion side of the connectors 22 and 23 is provided on the rigid printed board 21. , 29 are provided penetrating in the vertical direction.

  When the flexible printed circuit boards 24 and 25 are completely inserted into the connectors 22 and 23 (in the inserted state shown by broken lines in FIG. 9), the flexible printed circuit boards 24 and 25 are provided with the flexible printed circuit boards 24 and 25. The positions of the projections 26 and 27 and the vacuum suction holes 28 and 29 are arranged so that the projections 26 and 27 completely cover the corresponding vacuum suction holes 28 and 29 provided on the hard printed board 21. Is set.

  FIG. 10 is a perspective view showing the structure of the stage base 30 on which the rigid printed circuit board 21 according to the erroneous insertion prevention apparatus of Embodiment 2 is placed and fixed.

  A plurality of positioning pins 31, 31,... For abutting the two adjacent sides of the hard printed circuit board 21 on the upper surface of the stage base 30 and correctly positioning the hard printed circuit board 21 on the mounting portion 30a. -Is provided, and a vacuum suction hole 32 for vacuum-sucking the hard printed circuit board 21 is provided at the center of the mounting portion 30a.

  The stage base 30 is also provided with vacuum suction holes 33 and 34 at positions opposite to the vacuum suction holes 28 and 29 of the hard printed circuit board 21 positioned by the positioning pins 31, 31. It has been.

  FIG. 11 is an explanatory view showing an example of a vacuum exhaust wiring structure of the stage base 30.

  An exhaust valve 38 and a vacuum breaker valve 39 are disposed in a pipe portion between each vacuum suction hole 32, 33, 34 on the stage base 30 and the vacuum pump 36, and a vacuum pressure sensor 37 is further disposed. .

  The detection output of the vacuum pressure sensor 37 is input to the control unit 40. The control unit 40 controls the driving of the vacuum pump 36 based on the operation signal of the work start switch 40a, and controls the opening and closing of the exhaust valve 38 and the vacuum breaker valve 39 based on the detection output of the vacuum pressure sensor 37. It is like that.

  Next, processing operations when the flexible printed circuit boards 24 and 25 are inserted and connected to the corresponding connectors 22 and 23 in the erroneous insertion preventing apparatus having the above-described configuration will be described with reference to the flowchart shown in FIG.

  First, an operator positions and fixes the hard printed circuit board 21 to the placement site 30a on the stage base 30 (step S201). Subsequently, when the worker presses the work start switch 40a (step S202), the control unit 40 controls to close the vacuum break valve 39 (step S203), and then controls to open the exhaust valve 38 (step S203). Step S204). As a result, the hard printed circuit board 21 on the stage base 30 is fixed, and the operator inserts the flexible printed circuit boards 24 and 25 into the corresponding connectors 22 and 23 mounted on the hard printed circuit board 21 (steps). S205), the slider is closed and connected.

  At this time, the vacuum pressure sensor 37 monitors a preset value of the ultimate degree of vacuum (step 206). For example, when the insertion of the flexible printed board 24 is shallow or when it is inserted obliquely, Since the vacuum suction hole 28 is not completely blocked by the protrusion 26, a vacuum leak occurs and does not enter the set value of the vacuum pressure sensor 37. Further, as shown in FIG. 13, even when the right and left flexible printed circuit boards 24 and 25 are inserted into different connectors 23 and 22, the vacuum suction holes 28 and 29 are formed by the protrusions 27 and 26. Since it is not completely closed, a vacuum leak occurs, and the degree of vacuum does not reach the set value of the vacuum pressure sensor 37. Therefore, in such a case, the control unit 40 maintains the current operation state of each valve, and the vacuum state on the stage base 30 is not released, so the hard printed circuit board 21 on the stage base 30 cannot be taken out. . Therefore, the operator re-inserts the flexible printed circuit board in which the failure has occurred or replaces the two flexible printed circuit boards 24 and 25 (step 207).

  On the other hand, when the insertion of the flexible printed boards 24 and 25 is complete, the projections 26 and 27 provided on the flexible printed boards 24 and 25 completely block the corresponding vacuum suction holes 28 and 29. The degree of vacuum reaches the set value of the vacuum pressure sensor 37. Therefore, the control unit 40 controls to close the exhaust valve 38 (step S208), and then controls to open the vacuum break valve 39 (step S209). Thereby, since fixation of the hard printed circuit board 21 on the stage base 30 is cancelled | released, the operator can take out the hard printed circuit board 21 from the stage base 30 (step S210).

  Also in the second embodiment, as shown in FIG. 8 described in the modification of the first embodiment, the formation positions of the protrusions 26 and 27 provided on the individual flexible printed boards 24 and 25 are set to the flexible print. The positions may be shifted so as to be different positions in the insertion direction of the substrate. In this case, the vacuum suction holes 28 and 29 corresponding to the hard printed circuit board 21 and the corresponding vacuum suctions 33 and 34 corresponding to the stage base 30 must be shifted in accordance with this. As a result, in addition to incomplete insertion and oblique insertion of the flexible printed boards 24 and 25, it is possible to prevent erroneous insertion when the front and back are reversed.

  According to the erroneous insertion preventing apparatus and the erroneous insertion preventing method of the flexible printed circuit board according to the present invention, it is possible to easily and reliably prevent incomplete connector insertion and erroneous insertion of the flexible printed circuit board. It can be used effectively in the manufacturing process.

It is the elements on larger scale which show the terminal part vicinity of the flexible printed circuit board which concerns on the erroneous insertion prevention apparatus of Embodiment 1 of this invention, (a) is a top view, (b) is sectional drawing. It is a perspective view which expands and shows the hard printed circuit board which concerns on the erroneous insertion prevention apparatus of Embodiment 1 partially. It is a perspective view which shows the structure of the stage stand which mounts and fixes the hard printed circuit board which concerns on the erroneous insertion prevention apparatus of Embodiment 1. FIG. It is explanatory drawing which shows an example of the evacuation wiring structure of the stage base which concerns on the erroneous insertion prevention apparatus of Embodiment 1. 6 is a flowchart showing a processing operation at the time of insertion connection by the erroneous insertion prevention device according to the first embodiment. It is explanatory drawing which shows the malfunction that the insertion to the connector of a flexible printed circuit board is shallow. It is explanatory drawing which shows the malfunction which inserted the flexible printed circuit board into the connector diagonally. It is explanatory drawing which shows the modification example of the incorrect insertion prevention apparatus of the flexible printed circuit board concerning Embodiment 1, a hard printed circuit board, and a stage base. It is a perspective view which expands and shows partially the hard printed circuit board which concerns on the erroneous insertion prevention apparatus of Embodiment 2. FIG. It is a perspective view which shows the structure of the stage stand which mounts and fixes the hard printed circuit board which concerns on the erroneous insertion prevention apparatus of Embodiment 2. FIG. It is explanatory drawing which shows an example of the evacuation wiring structure of the stage base which concerns on the erroneous insertion prevention apparatus of Embodiment 2. 10 is a flowchart showing a processing operation at the time of insertion connection by the erroneous insertion prevention device according to Embodiment 2. It is explanatory drawing which shows the malfunction which inserted the flexible printed circuit board by mistake on the right and left.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flexible printed circuit board 2 Protrusion part 3 Terminal part 3a Terminal 4 Base material 5 Wiring pattern 6 Cover film 7 Reinforcement board 8 Connector 9 Slider 10, 14, 15 Vacuum suction hole 11 Stage base 12 Hard printed circuit board 13 Positioning pin 16 Vacuum pump 17 Vacuum pressure sensor 18 Exhaust valve 19 Vacuum break valve 20 Control unit 20a Work start switch 21 Hard printed circuit board 22, 23 Connector 24, 25 Flexible printed circuit board 26, 27 Protrusion part 28, 29 Vacuum suction hole 30 Stage base 31 Positioning pin 32, 33, 34 Vacuum suction hole 36 Vacuum pump 37 Vacuum pressure sensor 38 Exhaust valve 39 Vacuum break valve 40 Control unit 40a Operation start switch

Claims (7)

A device for preventing connection failure due to erroneous insertion when inserting and connecting a terminal portion of a flexible printed circuit board to a connector mounted on a hard printed circuit board,
The flexible printed circuit board is provided with protrusions on both sides or one side of the side along the insertion direction in the vicinity of the terminal portion,
A vacuum suction hole is provided at a position corresponding to the protruding portion of the flexible printed circuit board in which the terminal portion is inserted into the connector, on the rigid printed circuit board and the stage base for vacuum suction of the hard printed circuit board.
In the state where the rigid printed circuit board is positioned and fixed to the stage base having a vacuum suction mechanism, when the terminal portion of the flexible printed circuit board is inserted and connected to the connector, the vacuum suction of the protrusion is complete. An apparatus for preventing erroneous insertion of a flexible printed circuit board which releases the vacuum suction fixing of the hard printed circuit board and maintains the vacuum suction fixing of the hard printed circuit board when a vacuum leak occurs. A device for preventing connection failure due to erroneous insertion when a flexible printed circuit board corresponding to each connector is inserted and connected to a plurality of connectors mounted on a rigid printed circuit board,
The flexible printed circuit board is provided with protrusions on both sides or one side of the side along the insertion direction in the vicinity of the terminal portion,
The hard printed circuit board and the stage base that vacuum-sucks the hard printed circuit board are provided with vacuum suction holes at positions corresponding to the protrusions of the flexible printed circuit boards in which the terminal portions are inserted into the connectors. And
When the terminal portion of each flexible printed circuit board is inserted and connected to each connector in a state where the rigid printed circuit board is positioned and fixed to the stage base having a vacuum suction mechanism, the vacuum suction of each projection is completely completed. If this is the case, the vacuum print fixing of the hard printed circuit board is released, and if a vacuum leak has occurred, the vacuum print fixing of the hard printed circuit board is maintained. .   The apparatus for preventing erroneous insertion of a flexible printed circuit board according to claim 1 or 2, wherein the formation positions of the protrusions provided on both sides of the flexible printed circuit board are different in the insertion direction.   The apparatus for preventing erroneous insertion of a flexible printed circuit board according to claim 2, wherein the formation positions of the protrusions provided on both sides of the flexible printed circuit board are different for each flexible printed circuit board.   The vacuum evacuation system of the vacuum suction mechanism includes a vacuum pressure sensor, an exhaust valve, and a vacuum breaker valve, and controls release and maintenance of the vacuum suction fixation based on a set value of the vacuum pressure sensor. The apparatus for preventing erroneous insertion of a flexible printed circuit board according to any one of claims 1 to 4. A method of preventing connection failure due to erroneous insertion when inserting and connecting a terminal portion of a flexible printed circuit board to a connector mounted on a rigid printed circuit board,
The flexible printed circuit board is provided with protrusions on both sides or one side of the side along the insertion direction in the vicinity of the terminal part, and the hard printed circuit board and a stage base that vacuum-adsorbs the hard printed circuit board are connected to the connector. A vacuum suction hole is provided at a position corresponding to the protruding portion of the flexible printed board into which the terminal portion is inserted,
When the terminal portion of the flexible printed board is inserted and connected to the connector in a state where the rigid printed board is positioned and fixed to the stage base having a vacuum suction mechanism,
Determining whether the vacuum suction of the protrusion is complete;
As a result of the determination, when the vacuum suction of the protrusion is complete, the vacuum suction fixing of the hard printed circuit board is released, and when the vacuum leakage occurs, the vacuum suction fixing of the hard printed circuit board is maintained. A method for preventing erroneous insertion of a flexible printed circuit board, comprising: A method of preventing connection failure due to erroneous insertion when inserting and connecting a flexible printed circuit board corresponding to each connector to a plurality of connectors mounted on a rigid printed circuit board,
The flexible printed circuit board is provided with protrusions on both sides or one side of the side along the insertion direction in the vicinity of the terminal part, and the hard printed circuit board and a stage base that vacuum-adsorbs the hard printed circuit board are connected to the connectors. A vacuum suction hole is provided at a position corresponding to the protrusion of each flexible printed board in which the terminal portion is inserted,
When the terminal portion of each flexible printed board is inserted and connected to each connector in a state where the rigid printed board is positioned and fixed to the stage base having a vacuum suction mechanism,
Determining whether the vacuum suction of each of the protrusions is complete;
As a result of the determination, when the vacuum suction of each protrusion is complete, the vacuum suction fixing of the hard printed circuit board is released, and when the vacuum leakage occurs, the vacuum suction fixing of the hard printed circuit board is maintained. And a method for preventing erroneous insertion of a flexible printed circuit board.

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